Retention force test equipment for new energy automobile wire harness terminal and use method of retention force test equipment

Abstract

The invention discloses retention force testing equipment for a new energy automobile wire harness terminal and a use method thereof, and belongs to the technical field of wire harness terminal test.The retention force testing equipment is provided with a connecting clamping base, a pressure spring, a fixing clamping column, a clamping base, a positioning insertion block and a rectangular insertion block, the rectangular insertion block is clamped into a rectangular insertion groove, and when the rectangular insertion block is inserted into the rectangular insertion groove, the rectangular insertion block is clamped into the rectangular insertion groove; strip-shaped inserting grooves in the two sides of a rectangular inserting block are clamped on the surfaces of fixing clamping strips corresponding to the inner wall of the rectangular inserting groove till fixing clamping columns correspond to fixing inserting holes in position, a connecting block is loosened, a limiting plate is pressed to the bottom in a mounting groove under the springback effect of a pressing spring, and a connecting rod pulls the connecting block to move downwards to be attached to the top of a connecting clamping base; and the rectangular insertion block is clamped and fixed in the rectangular insertion groove until the fixed clamping columns are inserted into the corresponding fixed insertion holes, so that the clamping seat and the pressing cover are conveniently and randomly replaced according to the specifications of the wire harness terminals, and the wire harness terminals with different specifications and sizes are clamped and fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring harness terminal testing, and in particular to a retention force testing device for wiring harness terminals of new energy vehicles and a method for using the same. Background Art

[0002] As a key component of the electrical system of new energy vehicles, wire harness terminals undertake the important mission of transmitting electrical energy and signals. Their performance is directly related to the safety, reliability, and functionality of the entire vehicle. As the hub connecting the wiring harness to various components, the stability of the connection is crucial. This makes accurate testing of the retention force of wire harness terminals an indispensable part of ensuring the quality of new energy vehicles. Due to the characteristics of new energy vehicles such as high voltage, large current, and complex electronic control systems, the retention force of their wire harness terminals is more stringent. For example, during the driving process of new energy vehicles, the vehicle will experience various complex road conditions, resulting in vibrations and bumps. This requires that the wire harness terminals can always maintain a good connection state to prevent serious safety hazards such as poor contact, heating, and even fire caused by looseness. At the same time, with the continuous improvement of the intelligence level of new energy vehicles, a large number of sensors, controllers and other electronic devices are connected to the wiring harness system. The stability of signal transmission also depends on the reliable holding force of the wiring harness terminals. Therefore, the wiring harness terminals need to be tested during the wiring harness terminal processing. Among them, the tensile test of the wiring harness terminals is one of the important means to evaluate the holding force of the wiring harness terminals. By performing a tensile test on the wiring harness terminals, the quality of the wiring harness terminals is tested to ensure that when new energy vehicles are subjected to various external forces such as vibration and bumps during operation, the circuit interruption caused by loose or falling wiring harness terminals is avoided, affecting the normal operation of the vehicle.

[0003] When the existing retention force testing equipment for new energy vehicle wiring harness terminals performs tensile tests on the wiring harness terminals, since the wiring harness terminals have a variety of different thickness specifications, different clamps need to be replaced according to the specifications of the wiring harness terminals when clamping and fixing them. Since the clamps are generally fixed by multiple bolts, it is inconvenient to disassemble and assemble them at will, which easily leads to the tensile test of wiring harness terminals of different specifications. It takes a long time, affecting the test efficiency. Therefore, improvement is needed.

[0004] Based on this, the present invention designs a retention force testing device for new energy vehicle wiring harness terminals and a method of using the same to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a retention force testing device for new energy vehicle wiring harness terminals and a method of using the same, so as to solve the problem that the existing retention force testing device for new energy vehicle wiring harness terminals proposed in the above background technology is that when performing tensile testing on the wiring harness terminals, since the wiring harness terminals have a variety of different thickness specifications, different clamps need to be replaced according to the specifications of the wiring harness terminals when clamping and fixing them. Since the clamps are generally fixed by multiple bolts, it is inconvenient to disassemble and assemble at will, which easily leads to the problem that it takes a long time to perform tensile testing on wiring harness terminals of different specifications, affecting the test efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions: A retention force testing device for wiring harness terminals of new energy vehicles, comprising a mounting base, a tester fixedly mounted on one side of the top of the mounting base, a mounting base block fixedly mounted at a central position on the top of the mounting base, a mounting frame fixedly mounted on the top of the mounting base block, a movable seat slidingly mounted inside the mounting frame, a connecting card seat fixedly mounted on one side of the movable seat through the mounting frame, a clamping seat provided on the side of the connecting card seat away from the movable seat, a protective mechanism provided on one side of the mounting frame, and the protective mechanism covering the surface of the connecting card seat and the clamping seat, a support bar symmetrically fixedly mounted on the bottom of one side of the mounting frame, and the bottom end of the support bar fixedly connected to the top of the mounting base.

[0007] As a further solution of the present invention, an annular groove is provided on one side of the mounting base block, and rolling grooves are respectively provided on both sides of the inner wall of the annular groove. A tension sensor is provided at the central position of the mounting base block on one side of the annular groove. A fixed snap ring is rotatably installed inside the annular groove, and one side of the fixed snap ring extends through the annular groove to the outside of the mounting base block. A plurality of balls are inlaid and rollingly installed at equal angles on the surface of the fixed snap ring located on the inner side of the annular groove, and the balls are rollingly connected between the two rolling grooves. A connecting snap ring is fixedly installed on the surface of the fixed snap ring located on the outer side of the annular groove.

[0008] As a further solution of the present invention, the fixed clamping ring is provided with multiple fixed grooves at equal angles on the side away from the mounting base block, and the sizes of the fixed grooves increase successively. A positioning hole is provided on the surface of one side of the mounting base block between two adjacent fixed grooves. A fixed pressure ring is sleeved on the surface of the fixed clamping ring. Multiple fixed pressure grooves are provided on one side of the fixed pressure ring at equal angles, and the sizes of the fixed pressure grooves increase successively to correspond to the fixed grooves. A positioning column is fixedly installed on the inner wall of the fixed pressure ring between two adjacent fixed pressure grooves, and the positioning column corresponds to the position of the positioning hole. A connecting groove is provided on the inner wall of the fixed pressure ring, and the connecting groove is clamped with the connecting clamping ring.

[0009] As a further solution of the present invention, a limiting slide groove is symmetrically provided on both sides of the mounting frame, and movable studs are rotatably installed at both ends of the inner wall of the mounting frame through bearings, and the outer thread surface of the movable stud is threadedly connected to the movable seat, and limiting rollers are rotatably installed on both sides of the movable seat through a rotating shaft, and the limiting rollers are slidably connected to the inside of the limiting slide groove, and the top of the movable stud passes through the mounting frame and is fixedly installed with gear 1, and a rotating motor is fixedly installed on the top of one side of the mounting frame, and a gear 2 is fixedly installed on the output end of the rotating motor, and the gear 2 is meshed with gear 1.

[0010] As a further solution of the present invention, a positioning slot is provided at the bottom of one side of the connecting card seat, a rectangular slot is provided at the top of the connecting card seat, and fixed clips are symmetrically provided on both sides of the inner wall of the rectangular slot. Installation slots are symmetrically provided inside the two sides of the connecting card seat, and a limiting plate is slidably installed at the bottom of the installation slot. A connecting rod is fixedly installed on the top of the limiting plate, and a compression spring is provided on the surface of the connecting rod located inside the installation slot. The bottom ends of the two connecting rods extend through the installation slot to the top of the connecting card seat where a connecting block is fixedly installed. Fixed clips are symmetrically fixedly installed on the bottom of the connecting block, and the fixed clips correspond to the positions of the rectangular slots.

[0011] As a further solution of the present invention, a positioning block is fixedly installed on the bottom of one side of the clamping seat, and the positioning block corresponds to the position of the positioning slot and has the same shape. A rectangular block is fixedly installed on the top of the positioning block on one side of the clamping seat, and bar slots are symmetrically provided on both sides of the rectangular block, and the bar slots correspond to the position of the fixed card strip. Fixed holes are symmetrically provided on the top of the rectangular block, and the fixed holes correspond to the position of the fixed card column. A clamping cover is installed on the top of the clamping seat away from the rectangular block through a pin shaft. The clamping seat is provided with a rectangular groove on the side away from the rectangular block, and a mounting card column is fixedly installed at the central position of the inner wall of the rectangular groove.

[0012] As a further solution of the present invention, the clamping seat is provided with a wire release groove at the bottom on one side of the rectangular groove, and the wire release groove is connected to the rectangular groove, rectangular slide grooves are symmetrically provided on both sides of the clamping seat, and a second limiting slide groove is symmetrically provided on the inner wall of the rectangular slide groove, and a mounting column is fixedly installed inside the rectangular slide groove, and a moving block is slidingly installed through the surface of the mounting column, and a return spring is sleeved on the surface of the mounting column at the bottom of the moving block, and limiting protrusions are symmetrically fixedly installed on both sides of the moving block, and the limiting protrusions are slidingly connected to the inside of the second limiting slide groove, and an L-shaped hook is fixedly installed through the rectangular slide groove on one side of the moving block.

[0013] As a further solution of the present invention, the protective mechanism includes an installation slide, and the number of the installation slides is two, and a limiting slide is fixedly installed on the side of the two installation slides away from each other, and a plurality of positioning slots are equidistantly provided on the side of the installation slide adjacent to the limiting slide, and a transparent protective cover is slidably installed on the surface of the two installation slides, and the inner wall of the transparent protective cover is symmetrically provided with positioning slots, and the positioning slots pass through and are slidably connected to the surface of the limiting slide, and the bottom of both sides of the transparent protective cover is rotatably installed with a rotating bar through a protrusion, and a fixed card rod is fixedly installed between one end of the two rotating bars, and the fixed card rod corresponds to the position of the positioning slot, and the bottom of both sides of the transparent protective cover is fixedly installed with rubber pads.

[0014] A method for using a retention force testing device for a new energy vehicle wiring harness terminal, the method comprising the following steps: Lift the transparent protective cover and move it to a suitable height on the surface of the two mounting slides to reveal the movable seat. Turn the rotating bar to rotate the fixed card rod and insert it into the corresponding positioning card slot, thereby clamping the transparent protective cover at a suitable height on the surface of the mounting slide, freeing the staff's hands and facilitating subsequent operations. Select a suitable clamping seat according to the specifications of the wiring harness terminal, suspend the clamping seat on one side of the connecting card seat, align the positioning plug with the positioning slot, lift the connecting block to drive the connecting rod to move up inside the mounting slot, and drive the limit plate to move up and squeeze it tightly. When the spring is released, the connecting block drives the fixed card column to be pulled out of the rectangular slot when the connecting block moves up, and the clamping seat is pushed close to the connecting card seat, so that the positioning plug block is inserted into the positioning slot. At the same time, the rectangular plug block is inserted into the rectangular slot, so that the strip slots on both sides of the rectangular plug block are stuck in the corresponding fixed card strip surface until the clamping seat and the connecting card seat are close to each other, so that the position of the fixed card column and the fixed socket correspond to each other. The connecting block is released and the limit plate is pressed down under the rebound action of the compression spring, so that the connecting rod drives the connecting block to move down and close to the connecting card seat until the fixed card column is inserted into the corresponding fixed socket, so that the clamping seat and the connecting card seat are connected and fixed. After removing the fixing pressure ring from the surface of the fixing clamp ring, rotate the fixing clamp ring according to the thickness of the wiring harness terminal so that the fixing groove with the same thickness as the wiring harness terminal is vertically upward, clamp one end of the wiring harness terminal on the surface of the tension sensor, and at the same time clamp the wire of the wiring harness terminal into the corresponding fixing groove, then put the fixing pressure ring on the surface of the fixing clamp ring so that the size of the fixing groove on the surface of the fixing pressure ring corresponds to the size of the fixing groove on the surface of the fixing clamp ring, insert the positioning clamp column into the corresponding positioning socket, clamp the connecting clamp ring into the connecting groove, clamp the fixing pressure ring on the surface of the fixing clamp ring to clamp and fix one end of the wiring harness terminal; The clamping cover is then turned back on itself and the threaded rod is tightened to the left of the clamping cover, and the threaded rod is tightened to the left of the clamping cover. According to the test requirements, the rotating motor is controlled to rotate, and the movable stud is controlled to rotate through the engagement of gear two and gear one, so that the movable seat moves on the surface of the movable stud until the wiring harness terminal is straightened between the tension sensor and the mounting column, and the movable seat is continued to be controlled to move upward to apply tension to the wiring harness terminal, thereby testing the wiring harness terminal.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the clamping block is released, the limiting plate is pressed against the bottom of the installation groove under the rebound action of the compression spring, so that the connecting rod pulls the connecting block downward and is tightly attached to the top of the connecting block until the fixing post is inserted into the corresponding fixing hole, and the rectangular plug is clamped and fixed in the rectangular slot, thereby facilitating the replacement of the clamping block and the compression cover according to the specifications of the wiring harness terminal, and clamping and fixing wiring harness terminals of different sizes are performed; 2. The present invention is provided with a tension sensor, a fixed clamp, a connecting clamp, a clamping seat, a pressing cover and an L-shaped hook. The position of the fixed clamp on one side of the mounting base is adjusted according to the thickness of the wire of the wiring harness terminal. The fixed clamping groove that matches the thickness of the wire of the wiring harness terminal is vertically upward. The bottom end of the wiring harness terminal is clamped on the surface of the tension sensor, and the wire of the wiring harness terminal is clamped inside the corresponding fixed clamping groove. The fixed pressure ring is correspondingly clamped on the surface of the fixed clamp, and the fixed pressure groove corresponds to the fixed clamping groove until the positioning column is clamped into the corresponding Insert the connecting clamp into the connecting slot, clamp the fixed pressure ring on the surface of the fixing clamp, ensure that the wire of the wiring harness terminal is clamped and fixed between the corresponding fixing slot and the fixed pressure slot, and then clamp the other end of the wiring harness terminal on the surface of the mounting column, flip the clamping cover and stick it to the surface of the clamping seat, so that the L-shaped hook clamps and fixes the clamping cover, thereby clamping and fixing the wiring harness terminal between the corresponding tension sensor and the mounting column, which is convenient for clamping and fixing wiring harness terminals with different wire thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the installation of the bottom block, the fixed clamping ring and the fixed pressure ring of the present invention; Figure 3 It is a structural schematic diagram of the fixing clamp ring and the connecting clamp ring of the present invention; Figure 4 This is a schematic structural diagram of the fixed pressure ring and the positioning clamping column of the present invention; Figure 5 This is a schematic structural diagram of the mounting frame, movable base, connecting base and clamping base of the present invention; Figure 6 This is a schematic cross-sectional view of the connecting seat and the connecting block of the present invention; Figure 7 It is a schematic diagram of the rear side cross-sectional structure of the clamping seat, positioning plug and rectangular plug of the present invention; Figure 8 This is a front side cross-sectional structural diagram of the clamping seat, the pressing cover and the L-shaped hook of the present invention; Figure 9 It is a structural schematic diagram of the protection mechanism of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Mounting base plate; 2. Tester; 3. Mounting base block; 301. Annular groove; 302. Rolling groove; 303. Tension sensor; 304. Fixing snap ring; 305. Ball bearing; 306. Connecting snap ring; 307. Fixing slot; 308. Positioning socket; 309. Fixing pressure ring; 310. Fixing pressure groove; 311. Positioning post; 312. Connecting slot; 4. Mounting bracket; 401. Limiting slideway 1; 402. Moving stud; 403. Gear 1; 404. Rotating motor; 405. Gear 2; 5. Moving seat; 501. Limiting roller; 6. Connecting seat; 601. Positioning slot; 602. Rectangular slot; 603. Fixing strip; 604. Mounting slot; 605. Limiting plate; 606. Connecting rod; 607, compression spring; 608, connecting block; 609, fixed clamping column; 7, clamping seat; 701, positioning plug-in block; 702, rectangular plug-in block; 703, strip slot; 704, fixed socket; 705, clamping cover; 706, rectangular slot; 707, mounting clamping column; 708, wire release slot; 709, rectangular slide; 710, limiting slide second; 711, mounting column; 712, moving block; 713, limiting protrusion; 714, return spring; 715, L-shaped hook; 8, support bar; 9, protective mechanism; 901, mounting slide; 902, limiting slide; 903, positioning slot; 904, transparent protective cover; 905, positioning slot; 906, rotating bar; 907, fixing clamping rod; 908, rubber pad. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figures 1-9 , the present invention provides a technical solution: A retention force testing device for wiring harness terminals of new energy vehicles, comprising a mounting base 1, a tester 2 being fixedly mounted on one side of the top of the mounting base 1, a mounting base block 3 being fixedly mounted on the top of the mounting base 1 at a central position on one side of the tester 2, a mounting frame 4 being fixedly mounted on the top of the mounting base block 3, a movable seat 5 being slidably mounted inside the mounting frame 4, a connecting card seat 6 being fixedly mounted on one side of the movable seat 5 through the mounting frame 4, a clamping seat 7 being provided on the side of the connecting card seat 6 away from the movable seat 5, a protective mechanism 9 being provided on one side of the mounting frame 4, and the protective mechanism 9 covering the surfaces of the connecting card seat 6 and the clamping seat 7, a support bar 8 being symmetrically fixedly mounted on the bottom of one side of the mounting frame 4, and the bottom end of the support bar 8 being fixedly connected to the top of the mounting base 1; During operation, select a suitable clamping seat 7 according to the specifications of the wiring harness terminal, connect and fix the clamping seat 7 and the connecting card seat 6, so that the clamping seat 7 and the mounting base block 3 correspond in the vertical position, fix the two ends of the wiring harness terminal on one side of the mounting base block 3 and the clamping seat 7 respectively, control the movable seat 5 to move upward inside the mounting frame 4, drive the connecting card seat 6 and the clamping seat 7 to move upward synchronously, straighten the wiring harness terminal fixed between the mounting base block 3 and the clamping seat 7, control the distance that the movable seat 5 moves inside the mounting frame 4 through the tester 2, thereby adjusting the pulling force applied to the wiring harness terminal by the movable seat 5 to drive the connecting card seat 6 and the clamping seat 7, and perform a retention force test on the wiring harness terminal.

[0021] As a further solution of the present invention, an annular groove 301 is provided on one side of the mounting base 3, and rolling grooves 302 are respectively provided on both sides of the inner wall of the annular groove 301. A tension sensor 303 is provided at the central position of one side of the annular groove 301 of the mounting base 3; a fixed snap ring 304 is rotatably installed inside the annular groove 301, and one side of the fixed snap ring 304 extends through the annular groove 301 to the outside of the mounting base 3, and a connecting snap ring 306 is fixedly installed on the surface of the fixed snap ring 304 located on the outside of the annular groove 301; a plurality of balls 305 are inlaid and rollingly installed at equal angles on the surface of the fixed snap ring 304 located on the inside of the annular groove 301, and the balls 305 are rollingly connected between the two rolling grooves 302; The end of the fixing ring 304, away from the mounting base 3, is provided with multiple fixing slots 307 at equal angles, and the sizes of the fixing slots 307 gradually increase. The surface of the fixing ring 304 between two adjacent fixing slots 307 is provided with a positioning hole 308. A fixing pressure ring 309 is sleeved on the surface of the fixing ring 304. The end of the fixing pressure ring 309 is provided with multiple fixing pressure grooves 310 at equal angles, and the sizes of the fixing pressure grooves 310 gradually increase to correspond to the fixing slots 307. The inner wall of the fixing pressure ring 309 is a flange, and a positioning column 311 is fixedly installed on the flange between two adjacent fixing pressure grooves 310. The positioning column 311 corresponds to the position of the positioning hole 308. The inner wall of the fixing pressure ring 309 is provided with a connecting slot 312, which is engaged with the connecting ring 306.

[0022] During operation, the fixed clamping ring 304 is controlled to rotate, driving the ball 305 to roll inside the rolling groove 302, reducing the friction of the fixed clamping ring 304 when rotating inside the annular groove 301. The fixed clamping groove 307 corresponding to the thickness of the wire of the harness terminal is rotated to a vertical position, and one end of the harness terminal is clamped on the surface of the tension sensor 303. Since the harness terminal is generally composed of a wire and annular metal sheets at both ends, the annular metal sheets at both ends of the wire can be clamped on the surface of the cylindrical tension sensor 303 for clamping and fixing. After the harness terminal is clamped on the surface of the cylindrical tension sensor 303, the fixed pressure ring 309 is moved and suspended to the position corresponding to the fixed clamping ring 304, and the position of the fixed pressure groove 310 is adjusted so that the fixed pressure groove 310 corresponds to the fixed clamping groove 307. The fixed pressure ring 309 is moved to cover the fixed clamping ring 304. The surface of the wiring harness terminal is clamped into the corresponding positioning socket 308 to ensure that the fixed pressure ring 309 will not be misaligned when it is clamped on the surface of the fixed clamp ring 304. At the same time, the connecting clamp ring 306 is clamped into the connecting groove 312 to clamp the fixed pressure ring 309 on the surface of the fixed clamp ring 304, so that the wire of the wiring harness terminal is pressed and fixed between the corresponding fixed groove 307 and the fixed pressure groove 310, thereby clamping and fixing the wiring harness terminal. When the wiring harness terminal is pulled, the wiring harness terminal clamped on the surface of the tension sensor 303 applies tension to the tension sensor 303, thereby monitoring the tension applied to the wiring harness terminal when it is stretched in real time.

[0023] As a further solution of the present invention, limiting slide grooves 401 are longitudinally symmetrically provided on both sides of the mounting frame 4, and movable studs 402 are rotatably installed on the upper and lower ends of the inner wall of the mounting frame 4 through bearings. The outer threaded surface of the movable stud 402 is threadedly connected to the movable seat 5, and limiting rollers 501 are rotatably installed on both sides of the movable seat 5 through the rotating shaft, and the limiting rollers 501 are slidably connected to the inside of the limiting slide groove 401; the top of the movable stud 402 passes through the mounting frame 4 and is fixedly installed with a gear 1 403, and a rotating motor 404 is fixedly installed on the top of one side of the mounting frame 4, and a gear 2 405 is fixedly installed on the output end of the rotating motor 404, and the gear 2 405 is meshed with the gear 1 403; During operation, the rotating motor 404 is controlled to rotate, so that gear 2 405 and gear 1 403 rotate synchronously, driving the movable stud 402 to rotate inside the mounting frame 4, controlling the movable seat 5 to move up and down on the surface of the movable stud 402, driving the connecting seat 6 and the clamping seat 7 to move synchronously, and at the same time driving the limiting roller 501 to roll inside the corresponding limiting slide groove 1 401, limiting the movable seat 5, and ensuring that the movable seat 5 will not rotate synchronously with the rotation of the movable stud 402.

[0024] As a further embodiment of the present invention, a positioning slot 601 is provided at the bottom of one side of the connecting card seat 6, a rectangular slot 602 is provided at the top of one side of the connecting card seat 6, and fixed clips 603 are symmetrically provided on both sides of the inner wall of the rectangular slot 602; a positioning block 701 is fixedly installed at the bottom of one side of the clamping seat 7, and the positioning block 701 corresponds to the position of the positioning slot 601 and has the same shape. A rectangular block 702 is fixedly installed on one side of the clamping seat 7 at the top of the positioning block 701, and strip slots 703 are symmetrically provided on both sides of the rectangular block 702, and the strip slots 703 correspond to the position of the fixed clip 603; During operation, the clamping seat 7 is suspended on one side of the connecting card seat 6, so that the positioning plug block 701 and the rectangular plug block 702 correspond to the positioning slot 601 and the rectangular slot 602 respectively, and the clamping seat 7 is moved to gradually fit close to the connecting card seat 6, so that the positioning plug block 701 and the rectangular plug block 702 are inserted into the positioning slot 601 and the rectangular slot 602 respectively, ensuring that the strip slots 703 on both sides of the rectangular plug block 702 are stuck in the surface of the fixed card strip 603 corresponding to the inner wall of the rectangular slot 602, ensuring that there will be no misalignment when the clamping seat 7 is connected and fixed to the connecting card seat 6, and at the same time, the clamping seat 7 is clamped and limited.

[0025] As a further solution of the present invention, mounting grooves 604 are symmetrically provided inside the two sides of the connecting card seat 6, and limit plates 605 are slidably installed in the mounting grooves 604. A connecting rod 606 is fixedly installed on the top of the limit plate 605. A compression spring 607 is provided on the surface of the connecting rod 606 located inside the mounting groove 604. The tops of the two connecting rods 606 pass through the mounting grooves 604 and extend to the top of the connecting card seat 6 where a connecting block 608 is fixedly installed. Fixed clamping columns 609 are symmetrically fixedly installed at the bottom of the connecting block 608, and the fixed clamping columns 609 correspond to the positions of the rectangular slots 602 and penetrate into the rectangular slots 602; fixed insertion holes 704 are symmetrically provided on the top of the rectangular plug block 702, and the fixed insertion holes 704 are inserted corresponding to the positions of the fixed clamping columns 609; During operation, lift the connecting block 608 to move the fixed post 609 upward and away from the rectangular slot 602, drive the connecting rod 606 and the limit plate 605 to move upward inside the installation slot 604 to squeeze the compression spring 607 to deform, insert the rectangular plug block 702 into the rectangular slot 602, align the fixed post 609 with the fixed socket 704, loosen the connecting block 608 and press the limit plate 605 to the bottom of the installation slot 604 under the rebound action of the compression spring 607, so that the limit plate 605 drives the connecting rod 606 to move downward, pull the connecting block 608 to stick to the top of the connecting card seat 6, and insert the fixed post 609 into the corresponding fixed socket 704, so that the rectangular plug block 702 is clamped and fixed inside the rectangular slot 602, making it convenient to disassemble and fix the clamping seat 7.

[0026] As a further embodiment of the present invention, a clamping cover 705 is rotatably mounted on the top of the clamping seat 7 on the side away from the rectangular insert 702 via a pin. A rectangular groove 706 is provided on the side of the clamping seat 7 away from the rectangular insert 702, and a mounting post 707 is fixedly mounted at the center of the inner wall of the rectangular groove 706. A wire release groove 708 is provided on the bottom of the clamping seat 7 on the side of the rectangular groove 706, and the wire release groove 708 is connected to the rectangular groove 706. Rectangular chutes 709 are symmetrically provided on both sides of the clamping seat 7, and a second limiting chute 710 is symmetrically provided on the inner wall of the rectangular chutes 709. A mounting post 711 is fixedly mounted inside the rectangular chutes 709. A moving block 712 is slidably mounted on the surface of the mounting post 711, and a return spring 714 is sleeved on the surface of the mounting post 711 at the bottom of the moving block 712. The movable block 712 is symmetrically fixed with limit protrusions 713 on both sides, and the limit protrusions 713 are slidably connected to the inside of the second limit slide 710. An L-shaped hook 715 is fixedly installed on one side of the movable block 712 through the rectangular slide 709. During operation, the two L-shaped hooks 715 are pressed downward to drive the moving block 712 to slide down on the surface of the mounting post 711, squeezing the reset spring 714 to deform until the L-shaped hook 715 is separated from the clamping cover 705; since the wiring harness terminal is generally composed of a wire and an annular metal sheet at both ends, the annular metal sheets at both ends of the wire can be clamped on the surface of the cylindrical mounting clamp 707 for clamping and fixing, the clamping cover 705 is turned open to clamp the wiring harness terminal on the surface of the mounting clamp 707, and the clamping cover 705 is flipped closed to clamp the wire of the wiring harness terminal Inside the wire-releasing groove 708, loosen the L-shaped hook 715. Under the rebound action of the reset spring 714, lift the moving block 712 so that the L-shaped hook 715 fits and clamps on the surface of the clamping cover 705, and clamps and fixes the clamping cover 705 on the surface of the clamping seat 7. At the same time, when the moving block 712 slides on the surface of the mounting column 711, it drives the limiting protrusion 713 to slide inside the corresponding limiting slide groove 2 710, limiting the moving block 712, and ensuring that the moving block 712 will not be misaligned or offset when sliding on the surface of the mounting column 711.

[0027] As a further solution of the present invention, the protective mechanism 9 includes a mounting slide 901, and the number of the mounting slides 901 is two. A limiting slide 902 is fixedly installed on one side of the two mounting slides 901 away from each other, and a plurality of positioning slots 903 are equidistantly provided on the side adjacent to the mounting slide 901 and the limiting slide 902. A transparent protective cover 904 is slidably installed on the surface of the two mounting slides 901. Positioning slots 905 are symmetrically provided on the inner wall of the transparent protective cover 904, and the positioning slots 905 pass through and are slidably connected to the surface of the limiting slide 902. Rotating bars 906 are rotatably installed on the bottom of both sides of the transparent protective cover 904 through protrusions. A fixed card rod 907 is fixedly installed between one end of the two rotating bars 906, and the fixed card rod 907 corresponds to the position of the positioning slot 903. Rubber pads 908 are fixedly installed on the bottom of both sides of the transparent protective cover 904. When working, lift the transparent protective cover 904 to a suitable height to expose the movable seat 5 and the connecting card seat 6. When the transparent protective cover 904 slides on the surface of the installation slide bar 901, the positioning slide groove 905 on the inner wall of the transparent protective cover 904 slides on the surface of the corresponding limiting slide bar 902 to limit the transparent protective cover 904 and ensure that the transparent protective cover 904 does not tilt when moving up and down. After the transparent protective cover 904 moves to a suitable position, rotate the rotating bar 906 to rotate the fixing card rod 907 into the corresponding positioning card groove 903 to clamp and fix the transparent protective cover 904. The surface of the installation slide 901 will not slide down until the clamping seat 7 is connected to the connecting seat 6. Then, the fixed clamping rod 907 is rotated to disengage from the positioning slot 903 so that the rotating bar 906 is close to the rubber clamping pad 908, and the rubber clamping pad 908 is squeezed and deformed. The rotating bar 906 is clamped and fixed on both sides of the transparent protective cover 904, and the transparent protective cover 904 is pushed down on the surface of the installation slide 901 until the transparent protective cover 904 covers the clamping seat 7 and the surface of the wiring harness terminal, shielding and protecting the wiring harness terminal being tested, and preventing the wiring harness terminal from breaking due to excessive tension during the tensile test and causing injury to the tester.

[0028] A method for using a retention force testing device for wiring harness terminals of new energy vehicles, the method comprising the following steps: Lift up the transparent protective cover 904, so that the transparent protective cover 904 moves to a suitable height on the surface of the two installation slides 901, and the movable seat 5 is exposed. Turn the rotating bar 906 to rotate the fixed card rod 907 and snap it into the corresponding positioning card slot 903, so that the transparent protective cover 904 is clamped and fixed at a suitable height on the surface of the installation slide 901, freeing the staff's hands and facilitating the staff to perform subsequent operations. Select a suitable clamping seat 7 according to the specifications of the wiring harness terminal, suspend the clamping seat 7 on one side of the connecting card seat 6, align the positioning plug 701 with the positioning slot 601, lift the connecting block 608 to drive the connecting rod 606 to move up inside the installation slot 604, so that the connecting rod 606 drives the limit plate 605 to move up and squeeze the compression spring 607. When the connecting block 608 moves up, it drives the fixed clamping column 609 to withdraw from the rectangular slot 602, pushing the clamping seat 7 close to the connecting clamping seat 6, so that the positioning plug 701 is inserted into the positioning slot 601, and at the same time, the rectangular plug 702 is stuck in the rectangular slot 602, so that the strip slots 703 on both sides of the rectangular plug 702 are stuck on the surface of the corresponding fixed clamping strip 603, until the clamping seat 7 is close to the connecting clamping seat 6, so that the position of the fixed clamping column 609 corresponds to the position of the fixed socket 704, and the connecting block 608 is released. Under the rebound action of the compression spring 607, the limit plate 605 is pressed down, so that the connecting rod 606 drives the connecting block 608 to move down and close to the connecting clamping seat 6, until the fixed clamping column 609 is inserted into the corresponding fixed socket 704, and the clamping seat 7 is connected and fixed to the connecting clamping seat 6; After the fixing pressure ring 309 is removed from the surface of the fixing clamping ring 304, the fixing clamping ring 304 is rotated according to the thickness of the wiring harness terminal so that the fixing groove 307, which is about the same thickness as the wiring harness terminal, is vertically upward, and one end of the wiring harness terminal is clamped on the surface of the tension sensor 303. At the same time, the wire of the wiring harness terminal is clamped into the corresponding fixing groove 307. Then the fixing pressure ring 309 is sleeved on the surface of the fixing clamping ring 304 so that the fixing groove 307 on the surface of the fixing pressure ring 309 corresponds to the size of the fixing groove 307 on the surface of the fixing clamping ring 304. The positioning clamping column 311 is inserted into the corresponding positioning socket 308, so that the connecting clamping ring 306 is clamped in the connecting groove 312, and the fixing pressure ring 309 is clamped and fixed to the surface of the fixing clamping ring 304 to clamp and fix one end of the wiring harness terminal. Lift the other end of the wiring harness terminal vertically, press down the two L-shaped hooks 715 to slide on the surface of the mounting post 711 to squeeze the reset spring 714 to deform until the L-shaped hook 715 is separated from the clamping cover 705, loosen the clamping cover 705, flip open the clamping cover 705 to clamp the top of the wiring harness terminal on the surface of the mounting post 707, and at the same time clamp the wire of the wiring harness terminal inside the wire groove 708, flip close the clamping cover 705 until the clamping cover 705 is tightly attached to the clamping seat 7, loosen the L-shaped hook 715, and lift the moving block under the rebound action of the reset spring 714. 712, so that the moving block 712 drives the L-shaped hook 715 to move upward and clamp on the surface of the pressing cover 705, thereby clamping and fixing the pressing cover 705 on the surface of the clamping seat 7 to clamp and fix the wiring harness terminal, rotating the fixing clamping rod 907 to disengage from the positioning clamping groove 903, rotating the rotating bar 906 until it is tightly attached to the rubber clamping pad 908, clamping and fixing the rotating bar 906 to the bottom of both sides of the transparent protective cover 904, and controlling the transparent protective cover 904 to move downward on the surface of the installation slide bar 901 until the transparent protective cover 904 covers the clamping seat 7 and the surface of the wiring harness terminal; According to the test requirements, the rotating motor 404 is controlled to rotate, and the movable stud 402 is controlled to rotate through the engagement of gear 2 405 and gear 1 403, so that the movable seat 5 moves on the surface of the movable stud 402 until the wiring harness terminal is straightened between the tension sensor 303 and the installation column 707, and the movable seat 5 is continued to be controlled to move upward to apply tension to the wiring harness terminal, thereby testing the wiring harness terminal.

Claims

1. A retention force testing device for wiring harness terminals of new energy vehicles, comprising a mounting base (1), characterized in that: A tester (2) is fixedly mounted on one side of the top of the mounting base plate (1), a mounting base block (3) is fixedly mounted on the top of the mounting base plate (1) at a central position on one side of the tester (2), a mounting frame (4) is fixedly mounted on the top of the mounting base block (3), a movable seat (5) is slidably mounted inside the mounting frame (4), a connecting card seat (6) is fixedly mounted on one side of the movable seat (5) through the mounting frame (4), a clamping seat (7) is provided on the side of the connecting card seat (6) away from the movable seat (5), a protective mechanism (9) is provided on one side of the mounting frame (4), and the protective mechanism (9) covers the surface of the connecting card seat (6) and the clamping seat (7), a support bar (8) is symmetrically fixedly mounted on the bottom of one side of the mounting frame (4), and the bottom end of the support bar (8) is fixedly connected to the top of the mounting base plate (1).

2. A retention force testing device for wiring harness terminals of new energy vehicles according to claim 1, characterized in that: A ring groove (301) is provided on one side of the mounting base block (3), and rolling grooves (302) are provided on both sides of the inner wall of the ring groove (301). A tension sensor (303) is provided on the mounting base block (3) at a central position on one side of the ring groove (301). A fixed snap ring (304) is rotatably installed inside the ring groove (301), and one side of the fixed snap ring (304) passes through the ring groove (301) and extends to the outside of the mounting base block (3). A plurality of balls (305) are rollingly installed at equal angles on the surface of the fixed snap ring (304) located inside the ring groove (301), and the balls (305) are rollingly connected between the two rolling grooves (302). A connecting snap ring (306) is fixedly installed on the surface of the fixed snap ring (304) located outside the ring groove (301).

3. A retention force testing device for wiring harness terminals of new energy vehicles according to claim 2, characterized in that: A plurality of fixed card grooves (307) are provided at equal angles on one side of the fixed clamping ring (304) away from the mounting base block (3), and the sizes of the fixed card grooves (307) increase successively. A positioning socket (308) is provided on the surface of one side of the mounting base block (3) between two adjacent fixed card grooves (307). A fixed pressure ring (309) is sleeved on the surface of the fixed clamping ring (304). A plurality of fixed pressure grooves (310) are provided on one side of the fixed pressure ring (309) at equal angles, and the sizes of the fixed pressure grooves (310) increase successively and correspond to the fixed card grooves (307). A positioning card column (311) is fixedly installed on the inner wall of the fixed pressure ring (309) between the two adjacent fixed pressure grooves (310), and the positioning card column (311) corresponds to the position of the positioning socket (308). A connecting card groove (312) is provided on the inner wall of the fixed pressure ring (309), and the connecting card groove (312) is clamped to the connecting clamping ring (306).

4. The retention force testing device for wiring harness terminals of new energy vehicles according to claim 1, characterized in that: The mounting frame (4) is symmetrically provided with a limiting slide groove (401) on both sides. The two ends of the inner wall of the mounting frame (4) are rotatably mounted with movable studs (402) through bearings. The outer thread surface of the movable stud (402) is threadedly connected to the movable seat (5). The two sides of the movable seat (5) are rotatably mounted with limiting rollers (501) through a rotating shaft, and the limiting rollers (501) are slidably connected to the inside of the limiting slide groove (401). The top of the movable stud (402) passes through the mounting frame (4) and is fixedly mounted with a gear (403). A rotating motor (404) is fixedly mounted on the top of one side of the mounting frame (4), and a gear (405) is fixedly mounted on the output end of the rotating motor (404). The gear (405) is meshed with the gear (403).

5. The retention force testing device for wiring harness terminals of new energy vehicles according to claim 1, characterized in that: A positioning slot (601) is provided at the bottom of one side of the connecting card seat (6), a rectangular slot (602) is provided at the top of the connecting card seat (6), and fixed clips (603) are symmetrically provided on both sides of the inner wall of the rectangular slot (602), and mounting slots (604) are symmetrically provided inside the two sides of the connecting card seat (6), a limiting plate (605) is slidably installed at the bottom of the mounting slot (604), and a connecting rod (606) is fixedly installed on the top of the limiting plate (605), and a compression spring (607) is provided on the surface of the connecting rod (606) located inside the mounting slot (604), and the bottom ends of the two connecting rods (606) extend through the mounting slot (604) to the top of the connecting card seat (6) and are fixedly installed with a connecting block (608), and a fixed card column (609) is symmetrically fixedly installed on the bottom of the connecting block (608), and the fixed card column (609) corresponds to the position of the rectangular slot (602).

6. The retention force testing device for wiring harness terminals of new energy vehicles according to claim 5, characterized in that: A positioning block (701) is fixedly installed at the bottom of one side of the clamping seat (7), and the positioning block (701) corresponds to the position of the positioning slot (601) and has the same shape. A rectangular block (702) is fixedly installed on the top of the positioning block (701) on one side of the clamping seat (7), and strip slots (703) are symmetrically provided on both sides of the rectangular block (702), and the strip slots (703) correspond to the position of the fixed card strip (603). A fixed socket (704) is symmetrically provided on the top of the rectangular block (702), and the fixed socket (704) corresponds to the position of the fixed card column (609). A pressing cover (705) is rotatably installed on the top of the clamping seat (7) away from the rectangular block (702) through a pin shaft. A rectangular groove (706) is provided on the side of the clamping seat (7) away from the rectangular block (702), and a mounting card column (707) is fixedly installed at the central position of the inner wall of the rectangular groove (706).

7. The retention force testing device for wiring harness terminals of new energy vehicles according to claim 6, characterized in that: The clamping seat (7) is provided with a wire releasing groove (708) at the bottom of one side of the rectangular groove (706), and the wire releasing groove (708) is connected to the rectangular groove (706), and rectangular slide grooves (709) are symmetrically provided on both sides of the clamping seat (7), and the inner wall of the rectangular slide groove (709) is symmetrically provided with a second limiting slide groove (710), and a mounting column (711) is fixedly installed inside the rectangular slide groove (709), and a moving block (712) is slidably installed on the surface of the mounting column (711), and a return spring (714) is sleeved on the surface of the mounting column (711) located at the bottom of the moving block (712), and a limiting protrusion (713) is symmetrically fixedly installed on both sides of the moving block (712), and the limiting protrusion (713) is slidably connected to the inside of the second limiting slide groove (710), and an L-shaped hook (715) is fixedly installed on one side of the moving block (712) through the rectangular slide groove (709).

8. The retention force testing device for wiring harness terminals of new energy vehicles according to claim 1, characterized in that: The protection mechanism (9) includes a mounting slide (901), the number of the mounting slides (901) is two, and a limiting slide (902) is fixedly installed on one side of the two mounting slides (901) away from each other, and a plurality of positioning slots (903) are equidistantly provided on the side of the mounting slide (901) adjacent to the limiting slide (902), and a transparent protective cover (904) is slidably installed on the surface of the two mounting slides (901), and the inner wall of the transparent protective cover (904) is symmetrically provided with A positioning slide groove (905) is provided, and the positioning slide groove (905) is slidably connected to the surface of the limiting slide bar (902). The bottoms of both sides of the transparent protective cover (904) are rotatably mounted with rotating bars (906) through protrusions. A fixed clamping rod (907) is fixedly mounted between one end of the two rotating bars (906), and the fixed clamping rod (907) corresponds to the position of the positioning slot (903). Rubber clamping pads (908) are respectively fixedly mounted on the bottoms of both sides of the transparent protective cover (904).

9. A method for using a retention force testing device for wiring harness terminals of new energy vehicles, according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: Lift the transparent protective cover (904) and move the transparent protective cover (904) to a suitable height on the surface of the two installation slides (901), revealing the movable seat (5), rotating the rotating bar (906) so that the fixed card rod (907) rotates and snaps into the corresponding positioning card slot (903), thereby clamping the transparent protective cover (904) at a suitable height on the surface of the installation slide (901), freeing the hands of the staff and facilitating the staff to perform subsequent operations, selecting a suitable clamping seat (7) according to the specifications of the wiring harness terminal, suspending the clamping seat (7) on one side of the connecting card seat (6), aligning the positioning plug (701) with the positioning slot (601), lifting the connecting block (608) and driving the connecting rod (606) to move upward inside the installation slot (604), so that the connecting rod (606) drives the limit plate (605) to move upward to squeeze the compression spring (607), and at the same time, the connecting block (608) ) when moving upward, the fixed card column (609) is pulled out of the rectangular slot (602), and the clamping seat (7) is pushed close to the connecting card seat (6), so that the positioning plug (701) is inserted into the positioning slot (601), and at the same time, the rectangular plug (702) is stuck in the rectangular slot (602), so that the strip slots (703) on both sides of the rectangular plug (702) are stuck on the surface of the corresponding fixed card strip (603), until the clamping seat (7) is close to the connecting card seat (6), so that the position of the fixed card column (609) and the fixed socket (704) correspond to each other, and the connecting block (608) is released. Under the rebound action of the compression spring (607), the limit plate (605) is pressed down, so that the connecting rod (606) drives the connecting block (608) to move down and close to the connecting card seat (6), until the fixed card column (609) is inserted into the corresponding fixed socket (704), and the clamping seat (7) is connected and fixed to the connecting card seat (6); After the fixed pressure ring (309) is removed from the surface of the fixed clamp ring (304), the fixed clamp ring (304) is rotated according to the thickness of the wiring harness terminal so that the fixed card slot (307) with the same thickness as the wiring harness terminal is vertically upward, one end of the wiring harness terminal is clamped on the surface of the tension sensor (303), and the wire of the wiring harness terminal is clamped into the corresponding fixed card slot (307). Then, the fixed pressure ring (309) is put on the surface of the fixed clamp ring (304) so that the fixed card slot (307) on the surface of the fixed pressure ring (309) corresponds to the fixed card slot (307) on the surface of the fixed clamp ring (304). The positioning card column (311) is inserted into the corresponding positioning jack (308) so that the connecting clamp ring (306) is clamped into the connecting card slot (312). The fixed pressure ring (309) is clamped and fixed on the surface of the fixing clamp ring (304) to clamp and fix one end of the wiring harness terminal; Lift the other end of the harness terminal vertically, press down the two L-shaped hooks (715) and slide them on the surface of the mounting column (711) to squeeze the reset spring (714) until the L-shaped hook (715) is separated from the clamping cover (705), loosen the clamping cover (705), flip open the clamping cover (705) and clamp the top of the harness terminal on the surface of the mounting column (707), and at the same time clamp the wire of the harness terminal inside the wire groove (708), flip close the clamping cover (705) until the clamping cover (705) is tightly attached to the clamping seat (7), loosen the L-shaped hook (715) and lift the moving block (714) under the rebound effect of the reset spring (714). 12), the moving block (712) drives the L-shaped hook (715) to move upward and clamp on the surface of the clamping cover (705), thereby clamping and fixing the clamping cover (705) on the surface of the clamping seat (7) to clamp and fix the wiring harness terminal, rotating the fixing clamping rod (907) to disengage from the positioning clamping groove (903), rotating the rotating bar (906) until it is tightly attached to the rubber clamping pad (908), clamping and fixing the rotating bar (906) to the bottom of both sides of the transparent protective cover (904), and controlling the transparent protective cover (904) to move downward on the surface of the installation slide bar (901) until the transparent protective cover (904) covers the clamping seat (7) and the wiring harness terminal surface; According to the test requirements, the rotating motor (404) is controlled to rotate, and the movable stud (402) is controlled to rotate through the engagement of gear 2 (405) and gear 1 (403), so that the movable seat (5) moves on the surface of the movable stud (402) until the wiring harness terminal is straightened between the tension sensor (303) and the installation clamp (707), and the movable seat (5) is continuously controlled to move upward to apply tension to the wiring harness terminal, thereby testing the wiring harness terminal.

Images