41results about How to "Guaranteed contact force" patented technology

The invention relates to an immersion motor having a housing (3) and comprising a wall (4) having a watertight cable penetration (5, 6; 5, 6') comprising an inlet (5) in the wall (4) for a cable (25) and a sealing collar (6; 6') that can be released from the inlet (5) having a penetration (20) for the cable (25). The sealing collar (6; 6') thereby comprises a first seal (45; 45') disposed on the penetration (20) and a means for applying force (75, 85, 90) to the first seal (45; 45'), which is designed for permanently applying force to the first seal (45; 45') radially in the penetration (20). The cable penetration (5, 6; 5, 6') comprises means for releasably attaching (35, 40) the sealing collar (6; 6') to the inlet (5), wherein at least one second seal (120, 125) is provided between the sealing collar (6; 6') and the inlet (5).

A card connector for use with an electronic appliance through an IC card having a plurality of recesses extending from its front end toward its rear end in parallel with one another and contact pads each being received in the recess. The card connector includes a connector housing and contact terminals. The connector housing has a pair of guide grooves for supporting and guiding both side edges of a card being inserted into the card connector and an insertion space in the housing for the inserted card. The contact terminals made of a springy and electrically conductive material are arranged in the connector housing and each have a contact portion adapted to contact with a contact pad of the card normally inserted in the card connector. According to the invention, the card connector comprises support protrusions each provided at a location below at least the contact portion of the contact terminal to limit the downward displacement of the contact portion of the contact terminal when the card has been normally inserted in the card connector, thereby ensuring a contact force more than a predetermined value between the contact portions of the contact terminals and the contact pads of the card.

The invention discloses a novel lock nut which comprises a nut body. A threaded hole is formed in the nut body. The nut further comprises two L-shaped rotary blocks, the bottom of the I portion of each L-shaped rotary block is a circular bead, the inner end face of the - portion of each L-shaped rotary block is provided with multiple protrusions, the nut body is symmetrically provided with two horizontal grooves communicated with the outside, the nut body is further provided with vertical containing grooves communicated with the horizontal grooves, the I portion of each L-shaped rotary blocks are is contained in the corresponding containing groove, the width of the horizontal grooves is larger than the width of the L-shaped rotary blocks, the I portions of the L-shaped rotary blocks can slide up and down in the containing grooves and can turn over downward after sliding to the highest position, and the - portion of each L-shaped rotary block comprises a fixing block, a connection block and a cylinder. When not used, the novel lock nut has no difference with a commonly used nut, and the lock nut is little in occupied space, convenient to carry and use, capable of being used as common nuts and multifunctional.

A servo drive type floating mechanism comprises a holding seat, a grinding tool, a posture sensor, a displacement sensor, an inner frame and a first servo motor. The grinding tool is clamped in the holding seat, and the grinding tool is provided with a first pivot and a grinding tool body. The first pivot is perpendicular to the axis direction of the grinding tool. The posture sensor is used for sensing the posture of the grinding tool and sending out a posture signal, and the posture signal is calculated to obtain a torque compensation value aiming at the influence of gravity. The displacement sensor is used for sensing the displacement amount of the grinding tool along the first pivot. The grinding tool is arranged in the inner frame, and a first pivot of the grinding tool is movably arranged in the inner frame. The first servo motor is arranged in the inner frame and drives the grinding tool to rotate along the first pivot according to the torque compensation value and the displacement, so that torsion output by the grinding tool is not affected by gravity in various postures.

The invention discloses a novel automatic check nut. The novel automatic check nut comprises a nut body and two L-shaped rotating blocks, wherein a threaded hole is formed in the nut body; the bottom of the vertical part of each L-shaped rotating block is a fillet; the inner end face of the horizontal part of each L-shaped rotating block is provided with multiple protrusions arranged in an array; the nut body is symmetrically provided with two horizontal grooves; the nut body is provided with vertical containing grooves; a first air cylinder is arranged at the bottom of each containing groove, and a telescopic rod of the first air cylinder extends upwards; a push block is arranged at the end of the telescopic rod of each first air cylinder; the vertical part of each L-shaped rotating block is contained in one containing groove; the width of each horizontal groove larger than the width of each L-shaped rotating block; the vertical part of each L-shaped rotating block can slide up and down in the corresponding containing groove; the horizontal part of each L-shaped rotating block comprises a fixed block, a connecting block and second air cylinders. The novel automatic check nut occupies a small space when not used, is convenient to carry and use, can also be used as a common nut and has multiple functions.

The invention provides a high-density contact point connecting device, and the device comprises a plug connector and a socket connector, wherein the plug connector comprises a first insulating body and a plurality of first terminals, the first insulating body is provided with a column body part, and the plurality of first terminals are arranged on the column body part. The socket connector comprises a second insulating body and a plurality of second terminals, wherein the second insulating body is provided with a cylinder part, an accommodating space is formed in the cylinder part, and the plurality of second terminals are arranged on the cylinder part. The column body part of the plug connector can be inserted into the accommodating space of the socket connector, and the plug connector and the socket connector can rotate relatively, so that the first contact parts of the first terminals are clamped between the two second contact parts of the second terminals, and the plurality of first terminals and the plurality of second terminals are in contact conduction. Therefore, high-density and high-reliability signal contact points can be generated.

The invention relates to the technical field of electrified railway locomotives, and discloses a magnetic repulsion type suspension pantograph, which includes a base, a bow head bracket and a carbon slide plate, the carbon slide plate is arranged on the bow head bracket, and the base is installed to drive the bow head bracket to rise and fall The electromagnetic mechanism includes an inner cylinder, an outer cylinder, a permanent magnet and an iron core. The carbon slide plate is set on the outer top of the outer cylinder, the inner cylinder is fixed on the base, the permanent magnet is set on the outer cylinder, the iron core is set on the inner cylinder, and the iron A solenoid is wound on the core, a control circuit board for controlling the excitation current in the solenoid is arranged on the base, and a pressure sensor is arranged inside the outer cylinder. The beneficial effects of the present invention are: the pressure sensor is used to monitor the pantograph-catenary contact pressure in real time, and feeds back to the control circuit board, and the control circuit board adjusts the excitation current according to the pressure value and the built-in control algorithm to ensure that the pantograph-catenary contact force is stable at the setting value, so as to ensure the pantograph-catenary flow quality.

The present invention relates to the technical field of constant force grinding, and proposes a self-protecting double-degree-of-freedom constant force platform, which includes a moving mechanism that moves on a base, and the moving mechanism has a moving end; a mounting plate is arranged on the moving end; the constant force mechanism has a second One constant force cylinder, the second constant force cylinder and clamps, the push shafts of the first constant force cylinder and the second constant force cylinder are provided with clamps, the push tops of the first constant force cylinder and the second constant force cylinder The moving mechanism is contacted; the block is provided with a card slot, and the card part is placed in the card slot; the control valve is arranged on the air supply pipeline of the constant force mechanism. Through the above technical solution, the problem in the prior art that the grinding pressure on the workpiece is not constant is solved.

The invention discloses a novel lock bolt. A containing groove is formed in a screw rod and is communicated with a horizontal through groove, the I portions of two L-shaped rotary blocks abut against each other and are contained in the containing groove, a gap is reserved between the lower end of a protrusion and the bottom of the horizontal through groove, the I portions of the two L-shaped rotary blocks can slide up and down in the containing groove, and when sliding upward to the highest position, the I portions of the two L-shaped rotary blocks can turn over downward. The - portion of each L-shaped rotary block comprises a fixing block, a connection block and a cylinder, and the upper surface of a bolt head is provided with a switch controlling the cylinders. The novel lock bolt prevents the protrusion from being abraded or damaged, the stretching force of the cylinders can guarantee the contact force and the friction force between the protrusion and the surfaces of two sides, the occupied space is little, and the bolt is convenient to carry and use.

The invention discloses a non-structure freeform curved surface grinding device. Due to the arrangement of a pressing floating mechanism, a six-dimensional force sensor, an active control mechanism and a six-degree-of-freedom manipulator, stress conditions of a plurality of dimensions of a grinding head can be measured in real time through the six-dimensional force sensor. Different active and passive compliance control modes can be adopted by a controller according to the change of the stress conditions in the grinding process, the speed of responding to polishing force changes in the grinding process is improved, the contact force between a grinding head and the ground surface in the grinding process can be kept within a certain reasonable range all the time, and meanwhile, the directionof the grinding force is always in the vertical direction of the ground curved surface. By controlling the running track of the six-degree-of-freedom manipulator, the grinding track of the grinding head is adjusted, the non-structure freeform curved surface of a part to be machined is ground, grinding force control is carried out, the grinding efficiency and the surface finish are effectively improved, the labor intensity is reduced, and meanwhile, the part grinding quality is improved.

The invention discloses an automatic detection system for a ball cage holder, and the system comprises a rack, a sucking disc, a measuring head support, a camera, a camera support, a sliding seat, a sliding rail, a sliding seat cylinder, measuring tools, and a main control machine. During measurement, the sucking disc absorbs the holder, and the sliding seat cylinder pushes the sliding seat to enable the holder to move to a measurement position. The holder is positioned in a movement process, and the two measuring tools achieve one-time precision measurement. Meanwhile, the camera also achieves the precision detection of the holder. Afterwards, the sliding seat cylinder pushes the sliding seat to enable the holder to be separated from the measuring jaws of the two measuring tools. A sucking disc transmission device drives the holder to rotate twice, and the camera achieves the precision detection of the distance between two adjacent holes of the holder. The above process is carried out twice, thereby completing the detection of the holder.