44results about How to "Achieve popup" patented technology

The invention relates to a hidden structure of an automobile door external handle. The hidden structure comprises a vehicle door metal plate and the handle, a containing cavity is formed in the automobile door metal plate, a handle base is arranged in the containing cavity, the handle base is provided with a hiding groove, the handle is located in the hiding groove and is connected with the handlebase, one end of the handle is provided with a handle ejection mechanism, and the other end of the handle is provided with a locking mechanism. According to the hidden structure of the automobile door external handle, the design of guide grooves in an existing handle base and an existing control rod is canceled, so that the handle is smoother during the flat ejection of the handle, the difficultyof mold opening is reduced, the production cost is also reduced, and the production and assembly difficulty is greatly reduced.

The invention discloses a wire rope-free jointing device of a water injection well measurement adjuster, which relates to the jointing device of the water injection well measurement adjuster and aims to solve the problem that a jointing mechanism of a wire rope measurement adjuster has the disadvantages of difficult machining, quick-wearing wire ropes, easy interference among the wire ropes, and the like. A lower end face of a nut is connected with the upper end of a push rod; the push rod is positioned below a slide block; the upper end of the push rod is fixedly connected with the lower endface of the slide block, while a lower end is connected with the upper end of a spiral spring; the lower end of the spiral spring is connected with the upper end face of an accommodating cavity of a substrate; one end of a connecting rod is hinged with the corresponding outer sidewall of the push rod, and a small torsional spring is arranged at a hinging joint; the other end of the connecting rodis hinged with the outer sidewall of a measurement adjustment motor sleeve; the upper end of the measurement adjustment motor sleeve is hinged with one end of a popup arm, and a lower torsional spring is arranged at the hinging joint; and the other end of the popup arm is hinged with the sidewall of the upper end of the accommodating cavity, and an upper torsional spring is arranged at the hinging joint. The wire rope-free jointing device realizes the popup and withdrawal of a jointing arm of the water injection well measurement adjuster under the condition of not using the wire ropes.

The invention discloses an automobile multifunctional hidden type outer handle. The automobile multifunctional hidden type outer handle comprises a metal plate, a shell body, a framework and a base, wherein a reinforcing plate is fixedly arranged above the metal plate, the base is fixedly arranged above the reinforcing plate, and through holes are correspondingly formed in the metal plate, the reinforcing plate and the right side of the base; the shell body is arranged in the interiors of the through holes, and the framework is fixedly connected above the shell body; the right end of the framework is rotationally connected with a connecting block through a front torsional spring shaft pin and a front torsional spring, the left end of the connecting block is rotationally connected with a connecting rod through a connecting shaft pin, and the upper end of the connecting block is connected with the base through a track shaft pin (the connecting block can move along a track groove in the base); the left end of the connecting rod is rotationally connected with the right end of an AGS actuator through a front positioning shaft pin and a pressing block, and the upper portion of the left end of the framework is rotationally connected with an upper pull rod and a lower pull rod through fixed shaft pins. The automobile multifunctional hidden type outer handle is simple in structure, highin practicability and high in safety, the wind resistance and the wind noise are effectively reduced, and the high-end science and technology feeling of a whole car is improved.

The invention discloses a camera module and electronic equipment. The camera module comprises a first lens assembly, a second lens assembly and a third lens assembly, wherein the first lens assembly is located in a shell of the electronic equipment; the second lens assembly can retract into and extend out of the shell of the electronic equipment, and an included angle is formed between the secondlens assembly and the first lens assembly; the photosensitive element is arranged on one side of the first lens assembly; the light guide part is arranged between the first lens assembly and the second lens assembly, and light penetrating through the second lens assembly is suitable for being guided into the first lens assembly through the light guide part. According to the embodiment of the invention, the camera module has the advantages of long focal length and small height, the overall structure of the camera module is more compact, the overall size is smaller, the height is smaller, the packaging size is reduced, the thickness of the whole machine is reduced, the whole machine is lightened and thinned, and the placement of other devices in the whole machine is facilitated. Moreover, popup of the second lens assembly can be conveniently realized, and the optical path is prolonged.

The invention discloses a hidden handle for a vehicle door and the vehicle door. A base is arranged on the inner wall of the vehicle door. A handle containing cavity is arranged in the base, and the handle is arranged in the handle containing cavity. A slot hole for containing the handle is formed in the vehicle door, the first side of the handle is provided with a slot hole in a penetrating manner, and the first side face of the handle is flush with the outer wall of the vehicle door. A motor actuator is arranged on the base, and an output rod is arranged at the output end of the motor actuator. A first cam is rotatably connected to the base, and the first cam is connected to the output rod. A crank arm is rotatably connected to the base, and the crank arm and a driving plate are connected in a clamped manner, one end of the crank arm is connected to the first end, penetrating through the base, of the handle through a pin shaft, and the other end of the crank arm is also connected with the first cam. The driving plate is arranged on the base in a sleeve manner. A second cam is connected to the base through a pin shaft, the second cam and the driving plate are connected in a clamped manner, and the second cam is connected to a drive arm through a pin shaft. The second end of the drive arm is connected to the second end, penetrating through the base, of the handle. A sensor is located in the handle and used for receiving an external signal and transmitting the signal to the motor actuator.

The invention provides a coriolis acceleration demonstration instrument and relates to an acceleration demonstration instrument. The coriolis acceleration demonstration instrument is provided with a drive unit and a demonstration unit, wherein the drive unit is provided with a lower electromotor, a transmission shaft bevel gear, a lower electromotor bevel gear, a transmission shaft spur gear, a center shaft spur gear, a transmission shaft, a center shaft, a cross-shaped gear, a turntable cover, a turntable and a base; the demonstration unit is provided with an upper electromotor, a turntable cover, a turntable, a standard gear, a standard rack, a piston, a bolt, a ball feeding device, a catapulting device, a switch base and a touch wall. The coriolis acceleration demonstration instrument has the benefits that under the situation that each system normally runs, a small ball is popped up from the catapulting device and hits different positions of the touch wall according to different rotating speeds, and a lamp on the corresponding touch wall is lightened, so that the effect of an object under the action of coriolis force is embodied, that is, the effect of the coriolis acceleration on physical motion is demonstrated; not only is the weight of an experimental instrument reduced, and is the limitation on the using range reduced, but also the continuous effect of the coriolis acceleration on a mobile object as well as a motion track can be more intuitively observed.

The invention relates to an apartment building independent ventilation system. The apartment building independent ventilation system comprises indoor parts and outdoor parts; each indoor part communicates with the corresponding outdoor part through a ventilation pipeline; each indoor part comprises a ventilator; each outdoor part comprises a supporting barrel; the air inlet end of the supporting barrel is exposed out of a wall body; a limiting ring is fixedly mounted at each air inlet end; the barrel wall of each supporting barrel is hollow; an adjusting plate is arranged in the barrel wall of each supporting barrel and can slide on the axis of the supporting barrel in a reciprocating mode; the front end of each adjusting plate can be exposed out of the corresponding limiting ring; and an adjusting rope used for controlling the corresponding adjusting plate to slide is further arranged in the barrel wall of each supporting barrel and extends into a room along the axis of the corresponding ventilation pipeline. The ventilation system can provide independent ventilation paths for all rooms, ventilation of all the rooms is ensured, the privacy of all the rooms is also considered, and cross infection and pollution caused by smell streaming can be effectively prevented.

The invention relates to the field of valves, in particular to a valve with a guide assembly. The valve comprises a control mechanism, a fixing mechanism, a guide mechanism, a lubricating mechanism, aprotective mechanism and a filtering mechanism. The guide mechanism used for protecting the fixing mechanism and guiding a rotating tool is mounted on the top of the fixing mechanism. The protectivemechanism used for adjusting the control mechanism is slidably connected to the interior of the guide mechanism to facilitate adjustment of the control mechanism. The situation that the control mechanism is hard to adjust due to sand and stones clamped to the control mechanism is avoided. The filtering mechanism is mounted in the control mechanism. When the control mechanism is installed, a waterinlet pipe is made to abut against the filtering mechanism to realize filtering of flowing water. Household water consumption is facilitated. The control mechanism is prevented from being blocked andis protected. The lubricating mechanism is mounted on the top of the guide mechanism. During adjusting of the control mechanism, the lubricating mechanism is opened, and lubricating oil is filled intothe lubricating mechanism to facilitate rotating of the guide mechanism when the control mechanism is adjusted.

The transmission mechanism for the magnetic refrigerator comprises a refrigeration pipe and a refrigeration block sliding in the refrigeration pipe, the side wall of the first side of the refrigeration pipe is fixedly connected with a driving box, the side wall of the refrigeration block is fixedly connected with a driving rod, and the tail end of the driving rod penetrates through the driving box and extends into the driving box. And a driving mechanism capable of controlling the driving rod to reciprocate is arranged in the driving box. The reciprocating motion of the refrigeration block can be effectively controlled, and meanwhile the heat exchange process can be achieved.

The invention relates to a pen, in particular to a pressing release pen which comprises a front pen holder and a rear pen container. The front pen holder is provided with a pen head end and a sleevingend, the sleeving end is provided with a fixed groove and a sliding groove, the rear pen container is provided with a pen refill fixing groove and a movable inner cavity, the sleeving end of the front pen holder and the movable inner cavity of the rear pen container are in mutual sleeved connection, the rear pen container is provided with an elastic extrusion fixing part in the axial extension direction of the outer wall of the rear pen container, the outer end of the elastic extrusion fixing part is provided with a matching protrusion in the axial direction, and the matching protrusion is matched with the fixed groove. When the front pen holder and the rear pen container are in a first matched state, the writing end is retracted in the pen head end. When the front pen holder and the rearpen container are in a second matched state, the writing end is stretched out of the pen head end. By means of mutual matching between the elastic extrusion fixing part arranged on the outer side ofthe pen holder and the fixed groove arranged at the sleeving end, pen refill popup is achieved. The elastic extrusion fixing part is pressed to release matching with the fixed groove, pen refill retraction is achieved.

The invention relates to a flexible cable coaxial connector for an electromagnetic catapult. The connector comprises a body used for containing and fixing a flexible cable core. An inner conductor isarranged in the body and used for being fixed to the cable core. A drawable drawing sliding strip is arranged in a sliding groove in the inner wall of the body in a sliding mode, the outer end of thedrawing sliding strip is rotationally provided with an annular cutting piece used for stripping a flexible cable, and the drawing sliding strip located on the outer side of the cutting piece is further fixedly connected with an extrusion ring used for clamping and locking the flexible cable. On the basis of an original cable coaxial connector, the cutting piece used for stripping the outer sheathof the flexible cable is arranged; the push rod is pushed to drive an inner ring to rotate, so that a blade pops up, the cutting piece is rotated to perform rotary circumferential cutting on the outersheath of the flexible cable, due to the fact that the distance of the limiting groove is limited, the popping distance of the blade is limited, meanwhile, the cutting depth of the flexible cable islimited to a certain extent by the blade, and the problem that the cable is cut off by the blade is avoided.

The invention discloses a pressing type damping sliding rail which comprises an outer rail, an inner rail, a damping device and a rebounding device; the inner rail is matched with the outer rail, thedamping device is arranged at one end of the outer rail, the rebounding device is matched with the damping device, a lock hook is arranged at the bottom end of the inner rail, and the lock hook is arranged corresponding to the rebounding device and the damping device. By arranging the rebounding device, when external force presses a drawer fixed to the inner rail, the inner rail can be driven to move under the action of the rebounding device, so that the drawer is popped up; the end face of the drawer can be separated from the outer end face of the cabinet body without manually pulling the drawer, and the drawer can be conveniently pulled open subsequently; the damping device is arranged, so that when the drawer needs to be pushed back, damping force is provided for movement of the inner rail through the damping device, rapid pushing back of the inner rail is prevented, collision between the drawer and the cabinet body and noise generation are effectively prevented, and the service life of the drawer and the sliding rail is guaranteed.

The invention relates to the technical field of bookshelves, bookcase furniture and all-in-one machines, in particular to an intelligent bookshelf and side plate all-in-one machine which comprises a supporting mechanism, a driving mechanism, a placing mechanism, a processing mechanism, an ash removing mechanism and a pushing mechanism. A processing mechanism is installed in the supporting mechanism, so readers can borrow, return and inquire books on the supporting mechanism; one-key book borrowing, returning and inquiring of the books are completed at the terminal of the intelligent bookshelfside plate all-in-one machine, and the working pressure of workers is reduced. The driving mechanism abuts against the pushing mechanism located in the supporting mechanism; the feet of a reader taking more books can press the driving mechanism when the reader returns the books, the driving mechanism drives the pushing mechanism to be separated from the placing mechanism, the placing mechanism isejected out of the supporting mechanism, so placement of the books is achieved, and the pressure of book returning personnel is relieved. The dust removing mechanism is installed at the top of the supporting mechanism, when dust is found during face recognition, the dust removing mechanism is pulled, the supporting mechanism and one end of the dust removing mechanism are cleaned, and face recognition is facilitated; the machine is simple in structure, reasonable in design, small in occupied space, convenient to use and high in practicability.

The invention relates to a current-free, monostable electromagnetic actuating device having an armature unit with a permanent magnet, which has a snap-in or engagement section for cooperating with a tappet section, the armature unit being able to move from The currentlessly stable first servo position is shifted to the second servo position against the restoring force of the energy storage device, the coil device has a first coil unit which can be connected to the circuit in order to exert the armature unit from The loose force in the first servo position, the coil device also has a second coil unit that can be connected into the circuit so that the second coil unit exerts a force on the armature unit that accelerates the armature unit when shifting, the coil device There is a reset coil device, which can be connected to the circuit, so that the reset coil device strengthens the reset force of the energy storage device when the armature unit returns from the second servo position to the first servo position. The invention also relates to the use of a current-free monostable electromagnetic servo of the aforementioned type.

The invention discloses an automobile folding key durability test device which comprises a bottom board, a fixation assembly for fixing a folding key, a first drive assembly for pressing a button on the folding key and a second drive assembly for driving a key blank. The first drive assembly comprises a longitudinal shaft arranged on the bottom board, a transverse shaft connected with the longitudinal shaft, a first cylinder fixedly arranged at one end of the transverse shaft, and a compression shaft arranged on the first cylinder. The second drive assembly comprises a rotary cylinder fixedly arranged on the bottom board, a turntable connected with the rotary cylinder, a regulating block arranged on the turntable, and a poking rod assembled on the regulating block. The problems that the existing automobile folding key durability test device is not high in detection efficiency and the test process is not stable are solved; universality of the folding key test is achieved, and installation and debugging are very convenient; and the test rate can be up to 34 times per minute at most, and the test rate is increased by more than 3 times compared with that of a gear drive device in the past.

The invention relates to a pen, in particular to a pressing release pen which comprises a front pen holder and a rear pen container. The front pen holder is provided with a pen head end and a sleevingend, the sleeving end is provided with a fixed groove and a sliding groove, the rear pen container is provided with a pen refill fixing groove and a movable inner cavity, the sleeving end of the front pen holder and the movable inner cavity of the rear pen container are in mutual sleeved connection, the rear pen container is provided with an elastic extrusion fixing part in the axial extension direction of the outer wall of the rear pen container, the outer end of the elastic extrusion fixing part is provided with a matching protrusion in the axial direction, and the matching protrusion is matched with the fixed groove. When the front pen holder and the rear pen container are in a first matched state, the writing end is retracted in the pen head end. When the front pen holder and the rearpen container are in a second matched state, the writing end is stretched out of the pen head end. By means of mutual matching between the elastic extrusion fixing part arranged on the outer side ofthe pen holder and the fixed groove arranged at the sleeving end, pen refill popup is achieved. The elastic extrusion fixing part is pressed to release matching with the fixed groove, pen refill retraction is achieved.

The invention relates to a remote-control unlocking device for a vehicle door. The remote-control unlocking device is used for remote intelligent control of a door lock of a vehicle. A vehicle key ispositioned at a key pallet mechanism in advance; a communication and control module receives and sends control commands for controlling an unlocking actuating mechanism; and the unlocking actuating mechanism controls an unlocking button and a locking button of the vehicle key so as to control the functions of unlocking and locking of the vehicle door and to allow a user to use the vehicle. The remote-control unlocking device provided by the invention is positioned in the vehicle in advance, thereby realizing the remote intelligent control of the door lock of the vehicle without changing a prior electric circuit of the vehicle, enabling second-hand private cars to be used for mobile sharing travel, revitalizing the stock market of cars, improving the efficiency of the use of the vehicle, providing a new solution for travel difficulties of users and low public transport capacity, avoiding the inconvenience that the vehicle can be unlocked only by holding the vehicle key and improving theconvenience of the use of the vehicle.

The invention provides a lifting welding support for an automobile welding fixture with a self-locking function. The support is characterized by comprising a support platform, a mounting block, a lifting mechanism, a pushing mechanism and a locking mechanism, wherein the mounting block is mounted on the upper side of the support platform, the mounting block and the support platform are of an integrated structure, the pushing mechanism is arranged in the support platform and the mounting block, the locking mechanism is arranged on the upper side of the pushing mechanism, the lifting mechanism is arranged on the upper side of the support platform, and the lifting mechanism is arranged on the left side of the pushing mechanism. According to the support, the lifting mechanism is added, adjusting supports, lifting grooves and lifting sliding blocks are used to replace an existing X-shaped support, the stability is improved under the action of threads while a worm rotates, the phenomena that a welding workpiece falls to the ground due to vibration, and the welding workpiece is collided and damaged due to falling to the ground are further avoided, secondary manual machining is not needed any more, and a large number of manpower and material resources are reduced.

The invention discloses a key and a giant lock assembly based on the same. A giant lock (2) further comprises a lock unlocking post (6) and a lock unlocking pin (7), wherein the lock unlocking post (6) is arranged at the tail end of a lock cylinder (5) and coaxial with the lock cylinder (5); and one end of the lock unlocking pin (7) is connected with the lock unlocking post (6), and rotation of the lock unlocking post (6) enables the lock unlocking pin (7) to slide up and down. The other end of the lock unlocking pin (7) can be in limit fit with a lock pin groove (401) for achieving locking; a clearance is formed between the tail end of the lock cylinder (5) and the end, away from the lock unlocking pin (7), of the lock unlocking post (6); and one end of a key body (102) can penetrate through the lock cylinder (5) to be inserted into the lock unlocking post (6), so that the lock unlocking post (6) is driven to rotate, and the lock unlocking pin (7) is made to slide downwards until the limiting of the lock unlocking pin (7) and the lock pin groove (401) is released, so that the lock is unlocked. The key and the giant lock assembly based on the same have the advantage that the assembly is good in safety performance.

The invention provides a full-automatic double-head wafer testing machine. The full-automatic double-head wafer testing machine comprises a testing platform and an electric rotating disc installed at the upper end of the testing platform, wherein the rotating end of the electric rotating disc is fixedly connected with a testing disc, the edge of the upper end of the testing disc is provided with a plurality of mounting grooves distributed at equal intervals, the mounting grooves are internally provided with and slidably connected with bearing plates matched with wafers, the upper end of the testing disc is fixedly connected with a plurality of groups of conduction assemblies located on one sides of the mounting grooves, each conduction assembly comprises two metal contacts with a gap therebetween, the upper end of the testing platform is provided with an electric feeding sliding rail located on the first side of the testing disc, and three groups of testing devices are sequentially distributed at the upper end of the testing platform around the testing disc. According to the invention, technical problems in automatic detection of wafers are solved.

The embodiment of the invention relates to the technical field of mechanical design, and discloses electronic equipment. In the present invention, the electronic device includes: a shell forming an accommodating space, a card support accommodated in the accommodating space, an ejection piece accommodated in the accommodating space and used for ejecting the card support when being pressed, and a pressing piece rotatably arranged on the shell, and the pressing piece comprises a pull rod part arranged outside the accommodating space and a pressing part accommodated in the accommodating space andlinked with the pull rod part, and the pull rod part drives the pressing part to rotate under the action of an external force, so that the pressing part presses the ejection piece to eject the card support. According to the electronic equipment provided by the invention, popup of the card support can be realized by utilizing the structure of the electronic equipment, and the convenience of card replacement is improved.

The invention discloses a high-pole lamp capable of preventing a lamp holder from falling. The high-pole lamp comprises a lamp pole, a supporting rod is transversely arranged at the top of the lamp pole; the lamp holder is arranged at the bottom of the supporting rod, a pop-up mechanism is arranged in the middle of the lamp pole, a telescopic plate is arranged on the side, corresponding to the lamp holder, of the pop-up mechanism, the side, away from the pop-up mechanism, of the telescopic plate is connected to a hook through a pull rope, the hook is fixed to the lamp pole, and a photoelectricsensor is arranged on one side of the top of the lamp pole. According to the high-pole lamp capable of preventing the lamp holder from falling, through the arrangement of the photoelectric sensor andthe telescopic plate, the telescopic plate can be popped up at the moment when the lamp holder falls, so that the lamp holder is prevented from falling to the ground to cause personnel or property loss.

The invention relates to a gel fountain pen with a pen point capable of retracting back automatically. The gel fountain pen comprises a pen holder, a refill arranged in the pen holder and a rotary capspirally installed on the pen holder, and a gravity block is arranged in the pen holder and connected with the rotary cap through a first tension spring; the pen holder is provided with a rotating shaft which is arranged in the pen holder and is coincident with the pen holder in the length direction, the rotating shaft is provided with a cam groove spirally arranged along the axis of the rotatingshaft, the sliding block is provided with a cam push rod matched with the cam groove, and the cam push rod is arranged in the cam groove; a stopping flange is arranged on the refill, the rotating shaft is provided with a rotating stopping block corresponding to the stopping flange, one end of the rotating stopping block is connected with the rotating shaft, when the rotating stopping block rotates along with the rotating shaft, the other end of the rotating stopping block is in contact with and separates from the stopping flange, and stopping or stopping ending of the refill in the axial direction is achieved; and the rotary cap is provided with a pressing rod penetrating the rotary cap in a vertical sliding manner, the end, arranged in the pen holder, of the pressing rod is provided withan insertion hole matched with the refill, and the pressing rod slides on the rotary cap in the direction far away from the refill under the elastic action force.

The machine tool comprises a supporting rack and an annular groove shell fixedly installed on the supporting rack, an opening vertical shell is fixedly arranged on the outer edge of the upper portion of the annular groove shell, a forming side shell is fixedly arranged at the top end of the opening vertical shell, and at least two convex opening molds are arranged on the inner wall of the forming side shell; a first abutting ring and a second abutting ring abut against an inner cavity of the annular groove shell, a second rotating rod is fixedly arranged at the axis of the first abutting ring, a first rotating rod is fixedly arranged at the axis of the second abutting ring, and the top end of the top ring abuts against the bottom end of the forming side shell. According to the invention, a double-turntable rolling forming structure is adopted to realize one-time rolling mold forming processing when the rolling mold rotates in the forming side shell, and a double-turntable abutting transmission structure is adopted to realize that the driving pair rotates to drive the rolling mold to abut against and rotate in the inner cavity of the forming side shell, so that the circulating rotation of the rolling mold is facilitated; and an elastic sheet type annular self-cutting separation structure is adopted, so that circulating rolling production of the printing mold is realized.

The invention relates to the field of valves, specifically a valve with a guide assembly, including a control mechanism, a fixing mechanism, a guiding mechanism, a lubricating mechanism, a protection mechanism and a filtering mechanism; A guiding mechanism that guides the rotating tool, and the internal sliding connection of the guiding mechanism has a protective mechanism for adjusting the control mechanism to facilitate the adjustment of the control mechanism, and also avoids sand and gravel stuck to the control mechanism, which makes it difficult to adjust the control mechanism; A filter mechanism is installed inside the control mechanism. When the control mechanism is installed, the water inlet pipe is in conflict with the filter mechanism, so that the water can be filtered when the water flows, which is beneficial for residents to use water, and also avoids the blockage of the control mechanism and protects the control mechanism; A lubricating mechanism is installed on the top of the mechanism. When the control mechanism is adjusted, the lubricating mechanism is opened and lubricating oil is added to the inside, which is beneficial to the rotation of the guiding mechanism when the control mechanism is adjusted.

The invention relates to a writing pen capable of preventing a pen point from being damaged. The writing pen comprises a pen holder, a pen refill arranged on the pen holder and a rotary cap mounted onthe pen holder. The pen holder is provided with a wedge-shaped sliding block which is arranged on the pen holder and slides along the length direction of the pen holder, and the wedge-shaped slidingblock slides on the pen holder to the pen point direction away from the pen refill through the elastic force; the pen holder is provided with a centripetal sliding stop block arranged on the pen holder, the stop block is arranged between the pen refill and the wedge-shaped sliding block, the stop block centrifugally slides on the pen holder through elastic acting force and is in extrusion contactwith the wedge-shaped sliding block, a stop flange is arranged on the pen refill, and the stop flange is blocked by the stop block to keep the axial position of the pen refill unchanged. The rotary cap is provided with a pressing rod vertically sliding through the rotary cap, the end, in the pen holder, of the pressing rod is provided with an inserting hole matched with the pen refill, and the pressing rod slides in the direction away from the pen refill through the elastic acting force.