123results about How to "With locking function" patented technology

The invention discloses a camera module and a terminal device, and belongs to the technical field of electronics. The camera module comprises a rotatable reflector, a lens group, a shell and an image sensor; the shell comprises a first surface and a second surface; a first mirror surface of the rotatable reflector is a reflecting surface, and a part of the first mirror surface located in a first reflecting area is a first sub mirror surface; when the rotatable reflector is located at a first position, the first mirror surface reflects a first light signal, an image is generated after the reflected first light signal is transmitted along a straight line where an optical axis is located, when the rotatable reflector is located at a second position, the first mirror surface reflects a second light signal, and an image is generated after the reflected second light signal is transmitted along the straight line where the optical axis is located. According to the camera module provided by the embodiment of the invention, the function of double-channel shooting is realized by using just one rotatable reflector, thereby reducing the number of reflectors, shortening the size and saving the occupied space.

The invention discloses a rope coring positioning suspension mechanism with an in-place notifying function. The rope coring positioning suspension mechanism comprises an inner pipe assembly and an outer pipe drilling tool. The inner pipe assembly is arranged in the outer pipe drilling tool and can work when a rope drilling tool is released, an annular washing liquid channel between the inner pipe assembly and the outer pipe drilling tool is cut off after the rope drilling tool is released in place, water hammer pressures can be generated, a movable valve block can be driven to open a washing liquid channel at a valve block plate, and operators can know that the rope drilling tool is released in place by the aid of pressure fluctuation of an earth surface pressure gauge; a locking device is unlocked when the rope drilling tool is about to be fished, a fisher can drive a rope fishing spear to move upwardly, the movable valve block moves to the uppermost end of the rope coring positioning suspension mechanism, the washing liquid channel at the valve block can be opened, the fisher can continue being pulled, and accordingly the rope drilling tool can be completely fished. The rope coring positioning suspension mechanism has the advantages that an in-place notifying device can be automatically reset, accordingly, the rope coring positioning suspension mechanism is low in pressure loss, a locking function can be realized after the rope drilling tool is positioned, the rope drilling tool can be shortened, the rope coring positioning suspension mechanism is favorable for improving the rock core acquisition quality, field application and operation can be facilitated, and problems of suction, absorption and the like when drilling tools are fished can be solved.

The invention provides an anchor nail with a locking function. The anchor nail is used for fixing at least one flexible slender piece on human tissue, and comprises a shell, a winding shaft rotatably arranged in the shell, and a spiral nail rotatably connected with the far end of the shell; the spiral nail rotates relative to the shell so as to be anchored into human tissue; and the flexible slender piece movably penetrates through the outer circumferential face of the shell and the outer circumferential face of the winding shaft, and the winding shaft rotates relative to the shell to wind the flexible slender piece till the flexible slender piece is locked in a radial gap between the winding shaft and the shell. The anchor nail provided by the invention has a locking function and does not need an additional locking device, so that the number of instruments can be reduced, the operation steps can be simplified, and the operation time can be saved. The invention further provides an anchor nail assembly and a contraction ring system.

The invention discloses a pneumatic self-locking type automatic lifting take-up device for a water-tank wire drawing machine. The device comprises a pneumatic mounting self-locking unit and an automatic lifting unit, wherein the pneumatic mounting self-locking unit comprises a left I-shaped wheel mounting base, an I-shaped wheel, a spindle, a right I-shaped wheel mounting base, an end cover, a sliding base, a sliding sleeve, a locking cylinder, a rear cover plate, a locking shaft, a connecting plate, a rear driving cylinder and a front driving cylinder; and the automatic lifting unit comprises a top plate, a lifting block, a base, a first support rod, a second support rod, a lifting cylinder and a shaft. The device has a self-locking function and mounts the I-shaped wheel in a pneumatic manner, so that the efficiency in the process of mounting the I-shaped wheel is increased while the safety of the speedily rotating I-shaped wheel is ensured. By detaching the I-shaped wheel by using an automatic lifting platform, the labor intensity of operators is reduced, thereby being beneficial to lowering the production cost, and meanwhile the efficiency in the production process is further increased.

The invention relates to a short circuit grounding wire device with a locking function. The short circuit grounding wire device comprises an operation rod (1), a grounding chuck (4), a grounding wire guide-out end (25), a grounding lead (26) and a grounding end chuck (5). The grounding chuck (4) is connected with the grounding lead (26) through the grounding wire guide-out end (25). The grounding lead (26) is connected with the grounding end chuck (5). The side, close to the grounding chuck (4), of the operation rod (1) is provided with an electrified pre-warning device (6). The pre-warning device (6) comprises a locking device (7) for preventing misoperation. Locking can be performed through the locking device (7) when grounding misoperation occurs, and personal safety of operators is guaranteed. Compared with the prior art, the short circuit grounding wire device is safe and reliable, convenient to operate, and the like.

The invention relates to a test tube storage device which aims to solve the technical problems of storage of multiple test tubes in the same test tube rack, and provides a test tube rack with a locking function. The test tube rack consists of a test tube frame and a test tube support seat, wherein the test tube support seat is positioned at the inner bottom of the test tube frame; a plurality of rows and columns of guide holes are uniformly formed in the test tube support seat; guide pillars and first springs are arranged in the guide holes; the first springs are positioned at the bottoms of the guide holes; the guide pillars can freely move up and down in the guide holes under the action of the first springs. The test tube rack is characterized in that through holes corresponding to the guide holes are formed in a panel at the top of the test tube frame, wherein the through holes and the guide holes are positioned in the same perpendicular axes; test tube locking devices are arranged on the through holes. The test tube rack is reasonable in structure and convenient to use, and can be widely applied to transportation, storage and other operation processes of the test tubes.

The invention relates to the technical field of three-dimensional parking equipment, and specifically relates to a vehicle locking structure of three-dimensional parking equipment. A parking plate isof a hollow structure, and a locking mechanism is arranged in the parking plate; the locking mechanism comprises a stepper motor fixed to the front sidewall of the parking plate; and a drive end of the stepper motor is rotationally connected with a transversally-arranged rotary shaft, and one end away from the stepper motor, of the rotary shaft, penetrates through and extends into the parking plate and is fixedly connected with a first bevel gear. According to the vehicle locking structure of the three-dimensional parking equipment, through arrangement for an elastic telescopic rod device, clamping blocks are extruded by a tire and retreat into openings in the parking plate, and due to the design, a vehicle is facilitated to run on the parking plate; and through arrangement for the lockingmechanism, the two clamping blocks displace towards a direction close to the tire to clamp and fix the tire after the stepper motor is started, and the parking plate is enabled to have a function oflocking the vehicle, so that the stability of the vehicle is improved, the deviation of the vehicle in a transfer process is prevented, and the safety of the vehicle is guaranteed.

The invention belongs to the field of vehicle parts and particularly relates to an automotive electric ascending and descending table which can slide on a guide rail and can automatically ascend and descend. The automotive electric ascending and descending table comprises the guide rail and a control device, wherein the guide rail is connected to an automobile; a slidable table body is connected to the guide rail and comprises a base which is connected with the guide rail; a guide column capable of ascending and descending is connected to the base and comprises an internal guide column and an external guide column; the internal guide column is fixedly connected to the base; the external guide column is arranged outside the internal guide column and can vertically ascend and descend; the top of the external guide column is connected with a workbench; a power device is arranged on the base and is connected with a transmission mechanism which drives the guide column to vertically ascend and descend; the control device is arranged inside the ascending and descending table and is connected with the power device through a wire. According to the automotive electric ascending and descending table, the guide column is driven by a direct current motor or a stepping motor to ascend and descend; the workbench can be electrically controlled to ascend and descend; the total ascending and descending process can be controlled. The automotive electric ascending and descending table is higher in stability.

The invention discloses a drawer guide rail with buffer resetting and pressing rebound opening functions; the drawer guide rail comprises an inner rail, a middle rail and an outer rail which are sequentially wrapped from inside to outside, wherein the two adjacent rails are connected through a ball mechanism; a sliding seat is fixedly arranged at the tail end of the outer rail; a guide rail is arranged on the sliding seat; a buffer frame is arranged on the guide rail in a front-back sliding mode; a reset tension spring and a damper are arranged between the sliding seat and the buffer frame, and the reset tension spring generates tension to pull the buffer frame in the closing direction all the time; a rebound sliding block is arranged on the guide rail in a front-back sliding mode; a rebound tension spring is arranged between the rebound sliding block and the sliding seat, wherein the rebounding sliding block is always pulled towards the opening direction of the guide rail by the rebound tension spring. The drawer guide rail has the advantages that the press rebound type opening function is achieved, and the operation convenience of the guide rail can be effectively improved. Whenthe guide rail is closed, a buffer reset function is achieved, so that the drawer can be closed slowly, working noise generated when the guide rail is in collision with a limiting part is avoided, andthe operation quality is improved.

The invention provides a dual power switching control circuit capable of delaying on and off. The circuit comprises two voltage comparison circuits, wherein one voltage comparison circuit is formed by a triode T1, a voltage comparator IC1 and a triode T2 which are mutually connected and set up, and takes computer I / O (Input / Output) input as an input control signal; and the other voltage comparison circuit is formed by a triode T3, a voltage comparator IC2 and a triode T4 which are mutually connected and set up in the same connecting way, and takes collector output of the triode T1 as an input control signal. The dual power switching control circuit capable of delaying on and off has the effects that the operations of switch off and switch on of two switching devices on a dual power can be controlled through potential change of one input control signal; and the switch off and the switch on of the switches can be locked through utilizing 'NOT gate' relation between a base electrode and a collector electrode of a switch tube. A control signal is anti-interference, so that the influence of base electrode end low potential fluctuation on the working condition of the corresponding triode is effectively avoided. The adjustable output power is enhanced, the usable range is wide, and a general industrial low-voltage relay can be controlled.

An electrical connector includes first and second connectors fitted to each other in a first direction. The first connector includes a locking member extending in the first direction and displaceable in a second direction, a lever extending from the locking member in a third direction, a protruding portion protruding from the lever in the second direction, and an unlocking arm extending in the first direction and displaceable in the third direction. The second connector has a locking portion to be engaged with an engaging portion of the locking member in the first direction when the first and the second connectors are fitted to each other. Engagement between the engaging portion and the locking portion is released when the protruding portion is pressed by a cam portion of the unlocking arm to displace the locking member in the second direction through the lever.

The invention relates to the technical field of high-pressure cleaners and in particular relates to a high-pressure water gun with rotating and locking functions. The high-pressure water gun comprises a gun shell, a gun valve and an inner rod; the gun valve is fixed within the gun shell; one end of the inner rod extends into the gun valve to be in sealing contact with an inner tubular wall of the gun valve, while the other end of the inner rod extends out of the opening of the gun shell; a locking device matched with the inner rod to lock the inner rod is arranged within the gun shell. The high-pressure water gun has the advantages that: the gun rod can be rotated by any angles and also can be locked, and therefore, water pressures can be regulated conveniently and the gun rod can be mounted and demounted conveniently, thereby greatly facilitating actual use; meanwhile, the problem of following to rotate is also solved.

The invention relates to a flusher for a cervical cancer radiotherapy patient. The flusher comprises a supporting part, a spraying head fixed to the supporting part, at least two expansion parts and an adjusting mechanism, the expansion parts are separately hinged to the supporting part, and the spraying head is arranged between the expansion parts; the adjusting mechanism is used for controllingclosing of all the expansion parts, so that the spraying head is wrapped, the adjusting mechanism is also used for controlling opening of all the expansion parts, and the spraying head is used for outputting flushing liquid; the provided flusher is compact in structure and attractive, not only can more thoroughly flush the vagina, but also can achieve a vagina expansion effect in the flushing process and can effectively solves the problems of vaginal adhesion, elytrostenosis and the like which occur on the vagina of the cervical cancer radiotherapy patient. In addition, the flusher further hasa locking function, can maintain the opening angle and is more convenient to use.

The invention relates to a wind driven generator yawing device with a locking function. The wind driven generator yawing device is characterized by comprising a tower drum mechanism, a yaw driving mechanism, a transmission inner gear ring, a gear ring cooperation supporting wheel carrier, a gear ring cooperation adjusting wheel carrier, a locking mechanism, a locking chuck and an engine room support frame, wherein the engine room support frame comprises engine room support frame cross beams, an engine room support frame connecting plate, engine room support frame vertical beams and a locking mechanism connecting plate; the middle parts of the two engine room support frame cross beams are connected with the two engine room support frame vertical beams; the engine room support frame connecting plate is connected between the lower ends of the two engine room support frame vertical beams; the locking mechanism connecting plate is arranged on the side surface of one engine room support frame vertical beam; the upper end of the tower drum mechanism is fixedly connected with the transmission inner gear ring and the locking chuck; the locking chuck is arranged below the transmission inner gear ring; the yaw driving mechanism is fixedly connected on the engine room support frame connecting plate; and the locking mechanism is fixed to the locking mechanism connecting plate.

The invention discloses a hydraulic synchronous distribution motor with the unloading function. The hydraulic synchronous distribution motor with the unloading function comprises a hydraulic synchronous motor body and an external control type group valve. The hydraulic synchronous distribution motor with the unloading function is characterized in that the hydraulic synchronous motor body is composed of a plurality of hydraulic motors which are independently arranged on an oil circuit and are rigidly connected together in transmission, the external control type group valve is installed at the output end of the hydraulic synchronous motor body, a plurality of external control oil ports are arranged on the external control type group valve, the input ends of the hydraulic motors communicate with one another, the output ends of the hydraulic motors are independent from one another, a plurality of communicated oil inlets and a plurality of independent oil outlets are arranged on the hydraulic synchronous motor body, and each hydraulic motor is provided with an oil inlet and an oil outlet. The hydraulic synchronous distribution motor with the unloading function has the advantages that according to the motor, a common one-way valve is replaced by the external control type group valve, the pilot operated check valve can be opened reversely by applying external pressure, and therefore the flow gathering function is achieved, energy is saved furthermore, and therefore the operation efficiency of the hydraulic system is improved.

The invention relates to a portable short-circuit grounding device which comprises an operating connector (1), a ground clamp (4), a ground wire outgoing terminal (7), a ground lead (6) and a ground terminal clamp (5). The ground clamp (4) is connected with the ground lead (6) through the ground wire outgoing terminal (7), the ground lead (6) is connected with the ground terminal clamp (5), and a charged alarm device (2) is arranged on one side, close to the ground clamp (4), of the operating connector (1) and comprises an anti-fault locking device (3). The anti-fault locking device (3) is used for locking to guarantee personal safety of operators when ground fault occurs. Compared with the prior art, the portable short-circuit grounding device has the advantages of safety, reliability, convenience in operation and the like.

The invention discloses a rotatable armrest assembly with a locking function. The rotatable armrest assembly comprises a support seat and an armrest body rotatably arranged on the support seat, the armrest body and the support seat are connected through a rotating shaft, the rotating shaft is sleeved with a gear capable of sliding at the bottom of the armrest body, and the bottom of the armrest body is provided with a first sliding groove for containing the gear; the support seat is provided with a locking part for controlling the armrest body to rotate, the locking part comprises a spring bolt capable of stretching into tooth grooves of the gear and a push part which is in wedged connection with the spring bolt, the end face, facing the armrest body, of the gear is provided with first protrusions, and the armrest body is provided with first concave portions matched with the first protrusions. According to the rotatable armrest assembly, by connecting the armrest body with the rotating shaft arranged on the support seat, the armrest body can rotate in 360 degrees, and by arranging the locking part on the support seat, the armrest body achieves the locking function.

The invention provides a lockable rotary driving mechanism, an electric rotary seat and an automobile. The rotary driving mechanism comprises a fixed support, a rotary bearing disc which is fixedly connected with the fixed support and provided with an inner ring, a locking disc which is fixedly connected with the inner ring and provided with a plurality of protruding blocks, wedge-shaped spaces defined by the locking disc and the fixed support jointly are formed between the adjacent protruding blocks, and rigid gap sealing bodies and elastic reset pieces are arranged in the wedge-shaped spaces. The rotary driving mechanism further comprises a rotary driving module fixedly connected with the fixing support and a shifting fork connected to the power output end of the rotary driving module. The rotary driving mechanism has a locking function, can provide large locking torque, and can overcome the defect of insufficient locking torque in the prior art.

The invention discloses an extensible foldable bed-chair dual-purpose device, relates to a foldable and unfoldable foldable bed-chair dual-purpose device and aims to provide an extensible foldable dual-purpose device which can be used as a bed or a chair. According to the adopted technical scheme, the device comprises a fixed seat and an extensible device; the fixed seat comprises a horizontally arranged supporting containing box and four fixed supporting legs fixed below the supporting containing box, and the supporting containing box movably sleeves the extensible device; the structure of the extensible device is as follows: a supporting frame is of a quadrilateral frame structure, the supporting containing box movably sleeves the whole supporting frame, the movable supporting legs whichcan be folded to a horizontal position are hinged to the bottom of the pulled-out end of the supporting frame, a bed backup plate which can be folded in the supporting frame is also hinged to the pulled-out end of the supporting frame, and a lifting type supporting plate which can be flush with the upper surface of the supporting containing box is arranged in the supporting frame. The extensiblefoldable bed-chair dual-purpose device is used for achieving the two purposes of use as a bed and a chair.

The invention discloses an environmental detector placing rack with high adaptability. The environmental detector placing rack with high adaptability includes an operation platform, wherein a dust shield is disposed on the upper end of the operation platform; a control button is disposed on the front end surface of the operation platform; a horizontal partition plate is disposed under the operation platform; a support plates 1 are disposed on both sides of the bottom end of the operation platform; and the horizontal partition plate is fixedly connected to the support plates 1. The environmental detector placing rack with high adaptability has the advantages that as the support plates of the environmental detector placing frame re set as the lifting structure, the height of the environmental detector placing frame can be adaptively adjusted according to different application environments and the needs of the operator, thereby improving the adaptability of the environmental detector placing frame to meet the operational needs of different users; and as the dust shield is set, the environmental detector placing rack has a dust-proof function when not in use, thereby ensuring that theenvironmental detector is not contaminated, thereby improving the accuracy of the environmental detector experiment.

The invention belongs to the field of vehicle parts and particularly relates to an automotive electric ascending and descending table which can slide on a guide rail and can automatically ascend and descend. The automotive electric ascending and descending table comprises the guide rail and a control device, wherein the guide rail is connected to an automobile; a slidable table body is connected to the guide rail and comprises a base which is connected with the guide rail; a guide column capable of ascending and descending is connected to the base and comprises an internal guide column and an external guide column; the internal guide column is fixedly connected to the base; the external guide column is arranged outside the internal guide column and can vertically ascend and descend; the top of the external guide column is connected with a workbench; a power device is arranged on the base and is connected with a transmission mechanism which drives the guide column to vertically ascend and descend; the control device is arranged inside the ascending and descending table and is connected with the power device through a wire. According to the automotive electric ascending and descending table, the guide column is driven by a direct current motor or a stepping motor to ascend and descend; the workbench can be electrically controlled to ascend and descend; the total ascending and descending process can be controlled. The automotive electric ascending and descending table is higher in stability.

The invention relates to a gearbox rework support frame and an assembling and disassembling method thereof. The support frame comprises a support mechanism, a workbench, a sliding wheel and a liftingmechanism; the workbench is arranged on the top of the support mechanism and can slide along the horizontal direction; the lifting mechanism is arranged on the support mechanism and can drive the workbench to move up and down along the vertical direction; and by the scheme, the assembling and disassembling maintenance efficiency of an existing automobile gearbox can be improved, and the maintenance cost and difficulty are reduced; and the structure is simple and practical, and the material cost is low.

The invention provides a vehicle body bogie. The vehicle body bogie comprises a base, wherein an intermediate upright column which can be folded is arranged on the base; a left upright column which can be folded and a right upright column which can be folded are respectively arranged on two sides of the intermediate upright column, on the base; the intermediate upright column comprises an upper intermediate overturn upright column and a lower intermediate supporting upright column; the left upright column comprises an upper left overturn upright column and a lower left supporting upright column; the right upright column comprises an upper right overturn upright column and a lower right supporting upright column; the intermediate overturn upright column and the intermediate supporting upright column are connected through a folding mechanism; the left overturn upright column and the left supporting upright column are connected through a folding mechanism; and the right overturn upright column and the right supporting upright column are connected through a folding mechanism. Through the adoption of the vehicle body bogie provided by the invention, the switch between the bogie and an original vehicle bogie can be quickly realized.

The invention relates to the technical field of steel bar machining, in particular to a radius-adjustable steel bar welding, bending and rounding machine. The radius-adjustable steel bar bending and rounding machine comprises a rotatable operation table, a radius adjusting locking assembly arranged on the operation table and a connecting assembly. The radius-adjustable steel bar bending and rounding machine is characterized in that the connecting assembly comprises multiple radial guide parts arranged on the operation table in a radial shape and corresponding parts of the radial guide parts; the radius adjusting locking assembly comprises a main shaft rod, a sleeve and multiple supporting rods with the number corresponding to that of the radial guide parts; and each supporting rod is provided with a connecting end and a moving end, the connecting ends the hinged to the sleeve, and the moving ends are hinged to the corresponding parts. The radius-adjustable steel bar bending and rounding machine has the advantages of being simple in operation, fast, accurate and high in practicality.

The invention discloses a wind-driven generator yaw device with a locking function. The wind-driven generator yaw device comprises a tower frame rod, a supporting bearing is fixedly connected in a groove in the top of the tower frame rod, a rotating block is fixedly connected to the inner wall of the supporting bearing, the top of the rotating block penetrates through the supporting bearing and extends to the outside of the supporting bearing, a rotating plate is fixedly connected to the top of the rotating block, a mounting block is fixedly connected to the middle point of the top of the rotating plate, and a rotating shell is fixedly connected to the bottom of the rotating plate. According to the wind-driven generator yaw device with the locking function, a protection plate, limiting rods, a movable ring, limiting blocks, a limiting ring, limiting grooves, a movable plate, first springs, vertical plates, transverse rods, baffle plates and second springs cooperate with one another, sothat the wind-driven generator yaw device has the locking function, the yaw device can be conveniently limited by a worker, the situation that a fan blade of a wind-driven generator deviates from a set angle due to the influence of external force is avoided, the power generation efficiency of the wind-driven generator is improved, and great convenience is brought to a user.

The invention relates to a refrigerator. The refrigerator comprises a refrigerator body, a door body and a rotating sealing beam. The rotating sealing beam comprises a locking device and a locking hinge. The refrigerator body is provided with a guiding seat. The locking hinge comprises a mounting seat and a hinge shaft provided with a first locking part. The locking device is provided with a driving assembly, a second locking part and a guiding rail matched with the guiding seat. The driving assembly is connected with the second locking part and can drive the second locking part to be buckledwith the first locking part. When the refrigerator door body is closed, the second locking part moves to the position detached from the first locking part, so that the rotating sealing beam is in an unlocked state; the rotating sealing beam can rotate on the door body from a folded state to a stretching state; when the refrigerator door body is opened, the rotating sealing beam rotates on the doorbody from the stretching state to the folded state; and the driving assembly drives the second locking part to move to the position buckled with the first locking part, so that the rotating sealing beam is in a locked state. The rotating sealing beam of the refrigerator has a locking function and improves reliability of closing the door body.

The invention relates to a split type brake disc. The split type brake disc comprises a first sub-disc body, a second sub-disc body and a first connecting piece which is used for connecting the firstsub-disc body and the second sub-disc body, wherein the first sub-disc body is provided with a first sub-disc body connecting face, the second sub-disc body is provided with a second sub-disc body connecting face opposite to the first sub-disc body connecting face, the first connecting piece is connected with the first sub-disc body and the second sub-disc body through a first connecting hole in the first sub-disc body connecting face and a second connecting hole in the second sub-disc body connecting face, and the split type brake disc is characterized in that a protection structure for the first connecting piece is further included, the protection structure comprises a first protection part arranged on the first sub-disc body and a second protection part arranged on the second sub-disc body, and the first protection part and the second protection part jointly act to bear force or torque generated by the first sub-disc body and the second sub-disc body so as to reduce or prevent the situation that the force or torque is transmitted to the first connecting piece. The split type brake disc structure can effectively protect the first connecting piece, improves fastening connection reliability, and has the advantages of being convenient to overhaul and replace, reliable in fastening connection, high in local heat capacity of the disc bodies, low in casting defect and the like.

The invention relates to a doorframe connecting piece which comprises a main connecting piece, a corner and an auxiliary connecting piece. The doorframe connecting piece is characterized in that the main connecting piece comprises an upper table plate and a lower sloping plate, the auxiliary connecting piece comprises an upper table plate and a lower sloping plate, the upper table plates and the lower sloping plates are connected with a middle connecting plate, side arms are arranged on two sides of the middle connecting plate respectively, a T-shaped boss is arranged on each upper table plate, a threaded hole and a round hole are formed in the lower sloping plate of the main connecting piece and in the lower sloping plate of the auxiliary connecting piece respectively, a locking bolt and a spring are arranged between the lower sloping plate of the main connecting piece and the lower sloping plate of the auxiliary connecting piece, the corner comprises an upper plate and a lower plate, an upper sliding groove and a lower sliding groove are formed on two sides of the upper plate respectively, and an upper sliding groove and a lower sliding groove are formed on two sides of the lower plate respectively. The doorframe connecting piece can connect a horizontal frame and a vertical frame of a doorframe without welding needed, has a connecting function as well as a locking function, and is simple in structure, convenient to assemble and disassemble, reasonable in design, long in service life, and wide in market prospect.

The radio communication device having an antenna region at least comprises: a first module, a second module and a connector. Said connector made of ceramic material is located at said antenna region for securing and connecting said first module and second module in order to avoid interference to the antenna region. Said ceramic connector has four functionalities such as: locking, high antenna efficiency, good looking and electrostatic protection.