48results about How to "Avoid sliding teeth" patented technology

The invention discloses a screw fastening jig which comprises a base.A base plate capable of rotating relative to the base is arranged on the base.A product fixing device is arranged on the base plate.An upper fixing plate is arranged at the upper end of the product fixing device, a screw guide sleeve is arranged on the upper fixing plate, and a first supporting column and a second supporting column are arranged on the base, wherein the first supporting column is used for supporting the base plate to make the base plate be in an inclined state, and the second supporting column is used for supporting the base plate to make the base plate be in a perpendicular state.A product is fixed when the product fixing device is in an inclined state, and then the product fixing device is rotated to make the axis of a screw hole and the horizontal plane be perpendicular and maintain the state; a product protection hood and the screw guide sleeve are adopted to prevent the surface of the product from being scratched in the screw fastening state, screw loose of a screw or the screw hole is avoided, the screw fastening efficiency is improved, and thus the defective rate is reduced.

The invention relates to a molded case circuit breaker installation device. The device comprises a clamping seat and a supporting seat, wherein clamping grooves are formed in the bottom surface of the clamping seat and the top surface of the supporting seat; the clamping groove are used for clamping a circuit breaker, and a pushing cylinder is arranged on the top surface of the clamping seat; the pushing cylinder is fixed on a transverse plate; a positioning buffer mechanism is arranged between the clamping seat and the supporting seat; a guide sleeve is arranged on the top surface of the clamping seat, the top end of the guide sleeve adopts a conical structure, the bottom end of the conical structure adopts circular arc transition, and the guide sleeve is used for guiding an electric screwdriver; a rotary supporting mechanism is arranged in the guide sleeve, and a protection mechanism and a supporting mechanism are arranged at the bottom in the guide sleeve. The device avoids the screw driving deflection, protects the shell of the circuit breaker, and eliminates the safety risk; the device achieves the buffering of an electric screw driver, and also has a limiting function; the device avoids the screw thread slipping when the electric screw driver is pressed too much, thereby protecting the shell of the circuit breaker, and reducing the production cost.

The invention discloses a three-way electricity guard wall structure for a water heater. The structure comprises a first water pipe and a second water pipe which are integrated respectively, wherein the pipe walls of the water pipes are made of insulating materials; a grounding copper pipe connected with a ground wire is sleeved in the left side of the first water pipe; the second water pipe is sleeved in the grounding copper pipe; the first water pipe is longer than the second water pipe; the grounding copper pipe is provided with an exceeding section exceeding the second water pipe at the right end of the second water pipe, and the exceeding section divides the first water pipe into a first part at the left side of the exceeding section and a second part at the right side of the exceeding section; the exceeding section is contacted with the water flow only at the exceeding section; and because of the lengths of the first water pipe and the second water pipe, the intensity of the current after passing through the second part of the first water pipe and the intensity of the current after passing through the second water pipe are less than 5mA. Moreover, the invention also discloses a manufacturing method of the three-way electricity guard wall. Good insulating performance and grounding performance of the grounding copper pipe are ensured by uniform injection molding, smoothness of the water flow pipes is ensured, and the water flow of the inner pipe is improved.

The invention relates to an automatic screw locking elastic mechanism, of which a downward pushing cylinder is connected with a Z-axis moving mechanism; a spring mechanism is arranged on the Z-axis moving mechanism; an electronic screwdriver bit is arranged on the spring mechanism, the lower end of the electric screwdriver bit is connected with a screw chuck; the upper end of a support plate of the Z-axis moving mechanism is connected with a cylinder installation plate, and the lower end of the support plate is connected with a limit plate; a guide plate is arranged on the support plate; a guide sliding plate is arranged on the guide plate, a slide rail is arranged on the guide sliding plate, and a side block is arranged on the slide rail in a matched manner, a moving plate is fixedly connected with the slide block; the upper part of the moving plate is connected with a fixing plate through springs a and b, and the lower part of the moving plate is connected with a buffer plate; a blind hole is arranged in the moving plate, and a spring c is arranged in the blind hole; and a buffer limit pillar penetrates through the buffer plate, is inserted in the blind hole and is in contact with the spring c. Through the driving of the downward pushing cylinder, the electric screwdriver bit is driven to move downwards, meanwhile, a screw is driven to move downwards and to be rotatably attached on a product in a locked manner, the spring mechanism has a protective effect on the screw and the product, and the whole mechanism stably operates.

The invention discloses a screw fastening jig which comprises a base.A base plate capable of rotating relative to the base is arranged on the base.A product fixing device is arranged on the base plate.An upper fixing plate is arranged at the upper end of the product fixing device, a screw guide sleeve is arranged on the upper fixing plate, and a first supporting column and a second supporting column are arranged on the base, wherein the first supporting column is used for supporting the base plate to make the base plate be in an inclined state, and the second supporting column is used for supporting the base plate to make the base plate be in a perpendicular state.A product is fixed when the product fixing device is in an inclined state, and then the product fixing device is rotated to make the axis of a screw hole and the horizontal plane be perpendicular and maintain the state; a product protection hood and the screw guide sleeve are adopted to prevent the surface of the product from being scratched in the screw fastening state, screw loose of a screw or the screw hole is avoided, the screw fastening efficiency is improved, and thus the defective rate is reduced.

The invention discloses an auxiliary device for crimping and piercing pipes of overhead power transmission lines. A symmetrically arranged first column is arranged in the middle of the base, a second column is arranged on one side of the first column, and a first support arm is arranged on one side of a slider; One side of the tool is provided with a first sleeve, and one end of the first sleeve is installed inside the connecting ring; the clamping device includes a double-ended stud whose two ends rotate in opposite directions, a first ratchet fixedly installed in the middle of the double-ended stud, The first pawl installed on one side of the first ratchet and the wrench installed on one side of the first pawl, the middle part of the double-ended stud is movably installed on the upper end of the first column, and the two ends of the double-ended stud are threadedly connected with the slider . When the present invention is used, the aluminum stranded wire is clamped inside the clamps on both sides, the connecting pipe is arranged between the aluminum stranded wires on both sides, and the wrench is pressed to make the double-ended stud drive the clamp to slide to the middle, so that the aluminum stranded The wires are threaded into the splicing tube symmetrically, which improves the efficiency of wire crimping and ensures the accuracy of the aluminum stranded wire passing through the tube.

The invention discloses a motor front cover with a hanging right support installation structure. The motor front cover with the hanging right support installation structure comprises a motor front cover body and a right support installation platform which is arranged on the exterior side of the motor front cover body; a hanging bolt installation hole is formed in a supporting boss; a first reinforcing rib and a second reinforcing rib are arranged above a root portion which connects the right support installation platform and the motor front cover body; a third reinforcing rib is arranged under the root portion which connects the right support installation platform and the motor front cover body; an included angle beta which is formed between a right support installation surface of the right support installation platform and the motor front cover body is from 90.3 to 90.5 degrees. The motor front cover with the hanging right support installation structure has the advantages of being good in assembling manufacturability and high in intensity, improving reliability of connection between an integral vehicle and a power assembly and prolonging the service life of the motor and the integral vehicle.

The invention discloses a ventilation valve with a limiting device. The ventilation valve with the limiting device comprises a housing, wherein a wind guide plate cross shaft for mounting a wind guide plate is arranged in the middle of the housing; a driving pivot is arranged in the housing; a separable driving gear is arranged on the driving pivot; a wind guide plate gear is arranged at the tail end of the wind guide plate cross shaft; the wind guide plate gear is matched with the driving gear. In the ventilation valve with the limiting device, with adoption of a locating shoulder on the wind guide plate gear and an adjusting screw on the housing, a user can adjust a relative position between a locating pin on the adjusting screw and the locating shoulder according to the stroke requirement of the wind guide plate; when the wind guide plate reaches the maximal stroke, the ventilation valve can stop automatically to prevent the ventilation valve from continuously rotating to cause slippage of the gear, so that the reliability and the service life of the ventilation valve are greatly improved and prolonged.

The invention provides an energy-saving embedded control system, which comprises an embedded controller shell, strip-shaped plates are fixed to the lower side edges of the left end face and the rightend face of the embedded controller shell. The long holes are formed in the front side and the rear side of the upper end surface of the strip-shaped plate; a cover plate is installed on the front endface of the embedded controller shell, the left end face and the right end face in the embedded controller shell are each provided with two sets of connecting assemblies, the cover plate is fixedly connected with the embedded controller shell through a connecting assembly, a controller main board is arranged in the embedded controller shell, limit components are installed on the left and right sides of the controller main board, and the limit component is fixedly connected with the embedded controller shell, the embedded controller has the following beneficial effects that the controller mainboard is conveniently assembled, the convenient processing of a thread slipping condition is also achieved, and the local replacement of parts is realized.

The invention discloses an automobile rear wheel camber adjustment device, which comprises: an eccentric bolt, an elastic sleeve, an eccentric washer and a locking nut. In the present invention, an elastic sleeve is placed outside the eccentric bolt. The elastic sleeve is located between the eccentric bolt, the mounting head of the lower swing arm and the mounting bracket of the lower swing arm. The two ends of the sleeve shrink toward the middle, and the axial through groove will expand radially outward due to the axial compression force, that is, the elastic sleeve expands in the radial direction, thereby compensating for the eccentric bolt and the mounting head of the lower swing arm. , The assembly gap between the mounting brackets of the lower swing arm avoids the sway of the eccentric bolt in the lower swing arm and the rear sub-frame, and the deflection of the lock nut on the eccentric bolt caused by the sway, reducing the sliding of the eccentric bolt. The service life of the eccentric bolt is improved, and at the same time, the eccentric bolt maintains accurate positioning of the camber angle of the rear wheel, thereby improving the safety performance of the vehicle.