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CN-121595918-B - Circuit board test fixture

CN121595918BCN 121595918 BCN121595918 BCN 121595918BCN-121595918-B

Abstract

The application discloses a circuit board test fixture, and relates to the technical field of circuit board test. The lifting rod of the circuit board test fixture is fixedly connected with an electric push rod, a driving part of the electric push rod is fixedly connected with a moving rod, the moving rod is coaxial with the lifting rod, and the electric push rod is used for driving the moving rod to axially move along the lifting rod. The lifting rod is further connected with an abutting block in a sliding mode, the abutting block can slide along the radial direction of the lifting rod, the abutting block is arranged on the outer side of the moving rod, the abutting block is connected with the moving rod through a first connecting rod, one end of the first connecting rod is hinged to the inner wall of the abutting block, and the other end of the first connecting rod is hinged to the outer wall of the moving rod. The abutting blocks penetrate into the mounting holes of the detection plate of the circuit board test fixture, and the hole walls of the mounting holes are abutted with the plurality of abutting blocks at the opening positions so as to fix the detection plate and the lifting rod. Therefore, the detection board can be conveniently and rapidly disassembled, assembled and replaced to adapt to the test requirements of different circuit boards.

Inventors

  • ZHANG HAODONG
  • Gong Xiaocan

Assignees

  • 苏州元脑智能科技有限公司

Dates

Publication Date
20260508
Application Date
20260129

Claims (10)

  1. 1. The circuit board testing clamp is characterized by comprising a base (10), a bracket (20), a lifting rod (30), an electric push rod (40), a moving rod (110), a first connecting rod (120), an abutting block (130) and a detection plate (50); the bracket (20) is fixedly arranged on the base (10); The lifting rod (30) is arranged on the support (20) in a lifting manner, the fixed part of the electric push rod (40) is fixedly connected with the lifting rod (30), the moving rod (110) is fixedly connected with the driving part of the electric push rod (40), and the moving rod (110) and the lifting rod (30) are coaxially arranged; The abutting block (130) is slidably connected with the lifting rod (30), the abutting block (130) can slide between an opening position far away from the axis of the lifting rod (30) and a closing position close to the axis of the lifting rod (30) along the radial direction of the lifting rod (30), the abutting block (130) is arranged on the outer side of the moving rod (110), the abutting block (130) is connected with the moving rod (110) through the first connecting rod (120), one end of the first connecting rod (120) is hinged with the inner wall of the abutting block (130), and the other end of the first connecting rod (120) is hinged with the outer wall of the moving rod (110); The electric push rod (40) is used for driving the movable rod (110) to move along the axial direction of the lifting rod (30) so as to drive the abutting block (130) to slide between the open position and the closed position through the first connecting rod (120); The detection plate (50) is provided with a mounting hole (H), a plurality of abutting blocks (130) which are symmetrical with respect to the axis of the lifting rod (30) in a central mode are arranged on the lifting rod (30), the abutting blocks (130) are arranged in the mounting hole (H) in a penetrating mode, the hole wall of the mounting hole (H) abuts against the plurality of abutting blocks (130) which are located at the opening position, and therefore the detection plate (50) is fixed with the lifting rod (30).
  2. 2. The circuit board test fixture according to claim 1, wherein a first connecting block (150) is fixedly connected to an outer peripheral wall of the moving rod (110), a second connecting block (160) is fixedly connected to an inner peripheral wall of the abutting block (130), one end of the first connecting rod (120) is hinged to the first connecting block (150), and the other end of the first connecting rod (120) is hinged to the second connecting block (160).
  3. 3. The circuit board test fixture according to claim 2, further comprising a guide sleeve (170), the guide sleeve (170) being coaxially arranged with the lifting rod (30), the guide sleeve (170) being fixedly connected with the lifting rod (30); The movable rod (110) is arranged in the guide sleeve (170) in a penetrating mode, the movable rod (110) is in sliding fit with the guide sleeve (170), a first guide groove (G1) extending along the axial direction of the guide sleeve (170) is formed in the peripheral wall of the guide sleeve (170), and the first connecting block (150) is arranged in the first guide groove (G1) in a penetrating mode and is in sliding fit with the groove wall of the first guide groove (G1).
  4. 4. The circuit board test fixture according to claim 1, wherein the abutment block (130) is located laterally of the lifting lever (30) in an axial direction of the lifting lever (30); The lifting rod (30) is close to one end face of the abutting block (130) and is provided with a sliding groove (G2), the sliding groove (G2) extends along the radial direction of the lifting rod (30), a sliding rod (140) which is in sliding fit with the groove wall of the sliding groove (G2) is arranged in the sliding groove (G2) in a penetrating mode, and the abutting block (130) is fixedly connected with the sliding rod (140) so as to be in sliding connection with the lifting rod (30) through the sliding rod (140).
  5. 5. The circuit board test fixture according to claim 1, wherein the fixing portion of the electric push rod (40) is fitted into the lifting rod (30).
  6. 6. The circuit board test fixture of any of claims 1-5, further comprising a positioning push rod (210), a moving post (220), a rotating block (230), a second link (240), and an actuating block (250); The positioning push rod (210) is in sliding connection with the lifting rod (30), the positioning push rod (210) can slide between an initial position close to the abutting block (130) and a position far away from the abutting block (130) along the axial direction of the lifting rod (30), and the positioning push rod (210) protrudes out of the peripheral wall of the lifting rod (30); The movable column (220) and the rotating block (230) are movably arranged in the lifting rod (30), the movable column (220) is provided with a first socket (N1), the fixed part of the electric push rod (40) is provided with a second socket (N2), and a starting device for controlling the electric push rod (40) to start is arranged in the second socket (N2); The movable column (220) is fixedly connected with the positioning push rod (210), the rotating block (230) is rotationally connected with the lifting rod (30), one end of the rotating block (230) is inserted into the first socket (N1), the other end of the rotating block (230) is hinged with one end of the second connecting rod (240), the other end of the second connecting rod (240) is hinged with one end of the starting block (250), and the other end of the starting block (250) is inserted into the second socket (N2) and is rotationally connected with the fixing part of the electric push rod (40); The positioning push rod (210) is used for abutting against the side face of the detection plate (50) and can slide from the initial position to the in-place position under the pushing of the detection plate (50); the positioning push rod (210) sliding from the initial position to the in-place position is used for driving the starting block (250) to rotate to a position triggering the starting device through the moving column (220), the rotating block (230) and the second connecting rod (240), so that the electric push rod (40) is started and the abutting block (130) is driven to slide from the closing position to the opening position.
  7. 7. The circuit board test fixture according to claim 6, wherein the lifting rod (30) is provided with a second guide groove (G3) extending along the axial direction of the lifting rod (30), the moving column (220) is arranged in the second guide groove (G3) and is in sliding fit with the groove wall of the second guide groove (G3), and the positioning push rod (210) is in sliding connection with the lifting rod (30) through the moving column (220).
  8. 8. The circuit board test fixture according to claim 6, wherein the moving post (220) penetrates through the positioning push rod (210), a return spring (260) is arranged between the lifting rod (30) and one end of the moving post (220) away from the abutting block (130), and the return spring (260) is used for providing a force for returning the positioning push rod (210) in the in-place position to the initial position.
  9. 9. The circuit board test fixture of any of claims 1-5, further comprising a detachable connection assembly (300); The base (10) comprises a base body (11) and a bottom plate (12), and the bottom plate (12) is arranged at the bottom end of the base (10); The detachable connecting assembly (300) comprises a mounting block (310), a fixed block (320), a screw rod (330), a rotating disc (340), a supporting rod (390), a trapezoid block (350), a first sliding block (361), a second sliding block (362), a first clamping piece (371), a second clamping piece (372), a ratchet wheel (381), a pawl (382) and an elastic sheet (383); the mounting block (310) is fixedly connected to the bottom plate (12); The fixed block (320) is fixedly connected to the base (11), the supporting rod (390) is fixedly connected with the fixed block (320), the screw rod (330) is vertically arranged with the supporting rod (390), the screw rod (330) is rotationally connected with the supporting rod (390), the ratchet wheel (381) and the rotating disc (340) are coaxially connected with the screw rod (330), the rotating disc (340), the ratchet wheel (381) and the screw rod (330) synchronously rotate, the first sliding block (361) and the second sliding block (362) are arranged along the axial direction of the supporting rod (390), the first sliding block (361) and the second sliding block (362) are in sliding connection with the supporting rod (390), the first sliding block (361) and the second sliding block (362) can slide relative to the supporting rod (390) along the axial direction of the supporting rod (390), the first clamping piece (371) is fixedly connected with the first sliding block (361), and the second clamping piece (372) is fixedly connected with the second sliding block (362); The trapezoid block (350) is arranged between the first sliding block (361) and the second sliding block (362), the trapezoid block (350) is in threaded connection with the screw rod (330), the trapezoid block (350) comprises a first inclined plane and a second inclined plane, the first inclined plane is opposite to the first sliding block (361), the second inclined plane is opposite to the second sliding block (362), the first sliding block (361) comprises a third inclined plane opposite to and parallel to the first inclined plane, the second sliding block (362) comprises a fourth inclined plane opposite to and parallel to the second inclined plane, the first inclined plane is in sliding connection with the third inclined plane, and the second inclined plane is in sliding connection with the fourth inclined plane; The rotating screw rod (330) can drive the trapezoid block (350) to move along the axial direction of the screw rod (330) so as to drive the first sliding block (361) and the second sliding block (362) to slide along the axial direction of the supporting rod (390) between an axial position close to the screw rod (330) and a position far away from the axis of the screw rod (330), and further drive the first clamping piece (371) and the second clamping piece (372) to move between a clamping position close to the axis of the screw rod (330) and a loosening position far away from the axis of the screw rod (330); The mounting block (310) is arranged between the first clamping piece (371) and the second clamping piece (372), and the mounting block (310) is clamped by the first clamping piece (371) and the second clamping piece (372) which are positioned at the clamping position so as to realize the detachable connection of the bottom plate (12) and the seat body (11); The pawl (382) is rotationally connected with the fixed block (320), the elastic sheet (383) is arranged between the pawl (382) and the fixed block (320), and the elastic sheet (383) is used for crimping the pawl (382) on a tooth slot of the ratchet wheel (381).
  10. 10. The circuit board test fixture according to claim 9, wherein the fixing block (320) is disposed in the base body (11), a side wall of the base body (11) is provided with an avoidance opening (N3), the rotating disc (340) and the pawl (382) are disposed in the avoidance opening (N3) in a penetrating manner, and a part of the rotating disc (340) and a part of the pawl (382) are disposed outside the base body (11).

Description

Circuit board test fixture Technical Field The application relates to the technical field of circuit board testing, in particular to a circuit board testing clamp. Background Before the circuit board is installed, the circuit board needs to be tested to verify the performance of the circuit board and to realize the troubleshooting of faults such as short circuit, open circuit, wrong installation of devices and the like. Testing of circuit boards is often performed by a circuit board test fixture. In the related art, it is often difficult to replace a test board for docking with a circuit board to test the circuit board, so that the circuit board that can be tested by the circuit board test fixture is single, and the universality of the circuit board test fixture is poor. Disclosure of Invention The embodiment of the application provides a circuit board test fixture, which at least solves the problem that a circuit board which can be detected by the circuit board test fixture in the related art is single. The embodiment of the application provides a circuit board testing fixture which comprises a base, a bracket, a lifting rod, an electric push rod, a moving rod, a first connecting rod, an abutting block and a detection plate. The support is fixedly arranged on the base. Lifting rod liftable set up in the support, electric putter's fixed part and lifting rod fixed connection, and movable rod and electric putter's drive part fixed connection, movable rod and the coaxial setting of lifting rod. The abutting block is connected with the lifting rod in a sliding mode, the abutting block can slide between an opening position far away from the axis of the lifting rod and a closing position close to the axis of the lifting rod along the radial direction of the lifting rod, the abutting block is arranged on the outer side of the moving rod, the abutting block is connected with the moving rod through a first connecting rod, one end of the first connecting rod is hinged to the inner wall of the abutting block, and the other end of the first connecting rod is hinged to the outer wall of the moving rod. The electric push rod is used for driving the movable rod to move along the axial direction of the lifting rod so as to drive the abutting block to slide between the open position and the closed position through the first connecting rod. The detection plate is provided with a mounting hole, the lifting rod is provided with a plurality of abutting blocks which are symmetrical in a central mode relative to the axis of the lifting rod, the abutting blocks penetrate through the mounting hole, the hole wall of the mounting hole abuts against the plurality of abutting blocks at the opening position, and therefore the detection plate and the lifting rod are fixed. According to the application, the electric push rod is used as a power source for driving the abutting block to move between the open position and the closed position, so that stable driving force can be provided for driving the abutting block, and self-locking can be realized after the abutting block slides to the target position. When the electric push rod drives the movable rod to move along the axial direction of the lifting rod, the first connecting rod can rotate relative to the movable rod and the connected abutting block so as to convert the axial movement of the movable rod along the lifting rod into the radial movement of the abutting block along the lifting rod, and then the abutting block can be driven by the first connecting rod to slide between the open position and the closed position. When the abutting block slides from the open position to the closed position, the fixing of the detection plate and the lifting rod can be released, so that the detection plate can be conveniently detached from the lifting rod. When the abutting block penetrating through the mounting hole slides from the closed position to the open position, the abutting block can be stably abutted with the hole wall of the mounting hole, so that the detection plate and the lifting rod are fixed. Therefore, the detection plate can be conveniently and rapidly disassembled and assembled and replaced to adapt to the testing requirements of different circuit boards, the universality and the service efficiency of the circuit board testing clamp are improved, the time for correspondingly adjusting the circuit board testing clamp after the circuit board is replaced is shortened, and the shutdown cost caused by adjusting the circuit board testing clamp is reduced. Drawings For a clearer description of embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art. Fig. 1 is a schematic diagram of a circu