Electric vehicle wire harness detection device

Abstract

The invention discloses an electric vehicle wire harness detection device, and particularly relates to the technical field of electric vehicle wire harness detection, the electric vehicle wire harness detection device comprises a pedestal, the upper end of the pedestal is fixedly connected with a supporting frame, and the upper end of the supporting frame is provided with a pressing structure which penetrates through the upper end of the supporting frame and extends to the lower end of the supporting frame; fixing structures fixedly connected with the pressing structure are arranged on the inner surface of the supporting frame in a bilateral symmetry mode, and performance detection structures are symmetrically arranged on the lower portions of the ends, close to each other, of the vertical parts of the supporting frame. According to the electric vehicle wire harness detection device, the press-fit structure is driven to act under the action of the control end, female heads on the two sides are synchronously fixed under the action of the press-fit structure, in the process, male heads are clamped through cooperation of the control end and the performance detection structure, and the insertion and extraction force of a connector is detected; and meanwhile, the female head is buckled tightly in cooperation with the continuous action of the performance detection structure, and the pulling-out force of the crimping part is detected, so that the physical performance detection of the wire harness is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle wiring harness detection, and in particular to an electric vehicle wiring harness detection device. Background Art

[0002] In the current electric vehicle market, two-wheeled electric vehicles are widely welcomed for their convenience and environmental friendliness. With the development of technology and the increase in market demand, the safety and reliability of two-wheeled electric vehicles have become the focus of attention of consumers and manufacturers. Among them, the electric vehicle wiring harness is a key component that connects the various electronic components of the electric vehicle. The stability and reliability of its performance are crucial to the normal operation of the entire vehicle. The electric vehicle wiring harness not only needs to meet the requirements of electrical performance, such as voltage and current carrying capacity, but also needs to have good physical properties to ensure stability and durability under various conditions of use.

[0003] At present, the detection technology of two-wheeled electric vehicle wiring harness mainly relies on traditional detection methods, which include visual inspection of the color sequence of the wiring harness terminals and sequential measurement of the wiring harnesses on the three-electric system using a multimeter. These traditional detection methods are not only inefficient, but also easily affected by human and environmental factors, making it difficult to ensure the accuracy and consistency of the test results. In addition, the existing detection technology mainly focuses on the testing of electrical properties, such as insulation resistance, voltage resistance, salt spray requirements and flame retardant requirements, while the physical performance testing of the wiring harness, such as the plug-in and pull-out force of the connector and the pull-out force of the crimping, is relatively lacking.

[0004] Specifically, existing testing methods cannot effectively test the plug-in and pull-out force of the connectors and the pull-out force of the crimping of the wiring harness. These physical performance parameters are crucial to ensure the stability and reliability of the wiring harness in actual use.

[0005] If the plug-in and pull-out force of the connector does not meet the standards, the wiring harness may fall off when the vehicle vibrates or is subjected to external force, causing discontinuity of electrical connection and failure of mechanical components.

[0006] Similarly, insufficient pull-off force at the crimping point may cause the shielding layer or wire to fall off during assembly and use, affecting the electromagnetic compatibility and safety performance of the two-wheeled electric vehicle. Summary of the invention

[0007] The main purpose of the present invention is to provide an electric vehicle wiring harness detection device, which can effectively solve the problem that existing equipment cannot perform physical performance detection on the electric vehicle wiring harness.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A wire harness detection device for an electric vehicle comprises a pedestal, wherein the left front end is fixedly connected to a control end, the upper end of the pedestal is fixedly connected to a support frame, the middle upper end of the pedestal is fixedly connected to a rubber pad, the upper end of the support frame is provided with a pressing structure extending through the upper end thereof to the lower end of the support frame, the inner surface of the support frame is symmetrically provided with fixing structures fixedly connected to the pressing structure, and the lower part of one end of the vertical parts of the support frame close to each other is symmetrically provided with a performance detection structure.

[0010] Preferably, the pressing structure includes a support platform fixedly connected to the upper end of the support frame through a connecting rod, an electric telescopic rod is fixedly installed on the upper end of the support platform through a mounting frame, a compression component is symmetrically arranged on the lower end of the support platform, and the output end of the electric telescopic rod is fixedly connected to the compression component.

[0011] Preferably, the compression assembly includes two wedge-shaped sliders that are symmetrically distributed in a circle front and back, the upper parts of the ends of the two wedge-shaped sliders that are close to each other are fixedly connected to each other and are slidably connected to the lower end of the support platform, the ends of the two wedge-shaped sliders close to the electric telescopic rod one are fixedly connected to a driving rope fixedly connected to the piston rod at the output end of the electric telescopic rod one, the ends of the two wedge-shaped sliders that are away from the electric telescopic rod one are fixedly connected to a compression spring four, and the ends of the compression spring four that are away from the wedge-shaped slider are fixedly connected to a limit plate fixedly connected to the lower end of the support platform and the upper end of the support frame.

[0012] Preferably, the compression assembly also includes two contact blocks 1 distributed in a circularly symmetrical manner front to back, a lower end of each of the two contact blocks is fixedly connected to a sliding rod, a lower end of each of the two sliding rods passes through the upper end of the support frame, extends to the lower end of the support frame and is fixedly connected to a compression component, a lower end of the two contact blocks is fixedly connected to a compression spring 1 fixedly connected to the upper end of the support frame, and an upper end of each of the contact blocks is tightly attached to the inclined surface of the wedge-shaped slider through a pulley.

[0013] Preferably, the upper end of the support platform is located on the lower side of the electric telescopic rod and is fixedly connected to the limiting cylinder, the top wall of the inner surface of the limiting cylinder is fixedly connected to a compression spring three, the lower end of the compression spring three is fixedly connected to a sliding plate which is slidably connected to the inner surface of the limiting cylinder, the inner surface of the sliding plate is fixedly connected to the outer surface of the driving rope, the piston rod at the output end of the electric telescopic rod passes through the upper end of the limiting cylinder, extends to the inner cavity of the limiting cylinder and is fixedly connected to the driving rope, and the driving rope is fixedly connected to a connecting rope which is fixedly connected to the fixed structure at the bifurcation of the driving rope.

[0014] Preferably, the compression component includes a connecting block fixedly connected to the lower end of the adjacent sliding rod, the inner surface of the connecting block is symmetrically slidably connected to a limit rod one in the front and rear direction, the lower ends of the two limit rods are commonly fixedly connected to a contact block two, and the upper end of the contact block two and the lower end of the connecting block are commonly fixedly connected to a compression spring two which is symmetrically distributed in the front and rear direction and is sleeved on the outer surface of the adjacent limit rod one.

[0015] Preferably, the fixing structure includes a top plate, the support frame is symmetrically provided with a slide groove, the lower end of the top plate is fixedly connected to a fixing rod, the lower end of the fixing rod passes through the upper end of the support frame, extends to the lower end of the support frame and is slidably connected to the through groove, the lower end of the top plate is fixedly connected to a compression spring five which is sleeved on the outer surface of the fixing rod and fixedly connected to the upper end of the support frame, the inner surface of the slide groove is rotatably connected to a gear one, the end of the fixing rod close to the gear one is fixedly connected to a rack two which meshes with the gear one, the bottom wall of the inner surface of the slide groove is slidably connected to a rack one which meshes with the gear one, the end of the rack one away from the fixing rod is fixedly connected to an adjacent connecting rope branch, and the rack one is slidably connected to the fixing rod through a straight groove.

[0016] Preferably, the performance detection structure includes an electric telescopic rod 2 fixedly connected to a side of the vertical part of the support frame away from the rubber pad, a piston rod at the output end of the electric telescopic rod 2 passes through the adjacent outer end surface of the support frame, extends to the inner side of the support frame and is fixedly connected to a mounting seat slidably connected to the upper end of the pedestal, an end of the mounting seat away from the electric telescopic rod 2 is symmetrically provided with plug-in performance detection components front and back, and a pull-off performance detection component is commonly provided on the upper end and front and rear ends of the mounting seat.

[0017] Preferably, the plugging and unplugging performance detection component includes a limit groove opened at one end of the mounting seat away from the electric telescopic rod 2, the inner surface of the limit groove is slidably connected with an L-shaped clamp arm, the end of the L-shaped clamp arm close to the electric telescopic rod 2 is symmetrically fixedly connected to the limit rod 2, the outer surfaces of the two limit rods 2 are slidably connected to a fixing plate fixedly connected to the mounting seat, the ends of the two limit rods 2 close to the fixing plate are fixedly connected to a compression spring 6 fixedly connected to the fixing plate, and the end of the L-shaped clamp arm close to the electric telescopic rod 2 is fixedly installed with a friction pad.

[0018] Preferably, the pull-off performance detection component includes an L-shaped limit arm rotatably connected to one end of the mounting seat away from the electric telescopic rod 2 and a double-headed telescopic rod fixedly connected to the middle of the upper end of the mounting seat, the inner surface of the L-shaped limit arm is fixedly connected to a connecting column, the upper end of the connecting column passes through the inner surface of the mounting seat and extends to the upper end of the mounting seat, the part of the connecting column located at the upper end of the mounting seat is fixedly connected to a gear 2, the outer surface of the gear 2 is meshed with a rack 3 slidably connected to the upper end of the mounting seat on a side close to the electric telescopic rod 2, and the end of the rack 3 close to the electric telescopic rod 2 is fixedly connected to one of the output end piston rods of the double-headed telescopic rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention drives the action of the pressing structure through the action of the control end, cooperates with the rubber pad to compress and fix the plastic seal, and simultaneously uses the action of the pressing structure to synchronously fix the female heads on both sides. In this process, the male head is clamped by the cooperation of the control end and the performance detection structure, and the plugging and unplugging force of the connector is detected. In addition, the fixed state of the pressing structure is switched by the control end, and the female head is buckled by the continued action of the performance detection structure, and the pull-off force of the crimping point is detected, thereby realizing the physical performance detection of the wiring harness and ensuring its stability and safety.

[0021] 2. The present invention pulls the wedge-shaped slider to slide along the lower end of the support platform through the cooperation of the electric telescopic rod 1 and the driving rope, and presses the contact block 1 through the wedge-shaped slider to cause it to move downward, and utilizes the height difference of the two contact blocks 1 on the same side to achieve alternate compression and fixation of the connecting wire and the female connector, thereby cooperating with the morphological change of the performance detection structure to achieve alternate detection of the pull-off force at the crimping point and the plug-in force of the connector, thereby realizing the detection of different performances, reducing the process of multiple replacement of detection equipment, improving detection efficiency, and at the same time reducing the operating procedures of personnel and reducing detection errors.

[0022] 3. The present invention utilizes the cooperation between the driving rope and the rack one, and drives the fixed rod to move downward through the meshing action of the gear one and the rack two, and utilizes the fixed rod to compress and fix the plastic seal and the connecting wire, thereby avoiding the relative displacement of the plastic seal and the connecting wire during the traction test of the performance test structure, affecting the test accuracy, reducing the defective products that pass the inspection due to the deviation of the wire harness during the pulling process, and ensuring the yield rate.

[0023] 4. The present invention utilizes the action of the electric telescopic rod 2 and the mounting seat to clamp and fix the female head and the male head from both sides, utilizes the action of the plug-in performance detection component on the female head to detect the plug-in force of the connector of the wiring harness terminal, and simultaneously utilizes the action of the double-headed telescopic rod and the rack 3 to cooperate with the gear 2 to drive the L-shaped limit arm to rotate, clamps the female head, and detects the pull-out force of the crimping joint between the female head and the connecting wire, thereby realizing the detection of different physical properties of the same wiring harness, reducing the process of transfer between equipment, and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the pressing structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the compression assembly of the present invention;

[0027] Figure 4 It is a schematic structural diagram of the compression component of the present invention;

[0028] Figure 5A schematic diagram of the connection relationship between the compression assembly and the compression component of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the fixing structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 A is an enlarged schematic diagram of the local structure at center A;

[0031] Figure 8 It is a structural schematic diagram of the performance detection structure of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connection state between the plug-in performance detection component and the male connector of the present invention;

[0033] Fig.10 It is a schematic diagram of the buckled connection state between the pull-off performance detection component and the female connector of the present invention.

[0034] In the figure: 1, base; 11, rubber pad; 2, control end; 3, support frame; 31, slide groove; 4, pressing structure; 41, support table; 42, pressing assembly; 421, wedge-shaped slider; 422, contact block 1; 423, compression spring 1; 424, sliding rod; 425, pressing component; 4251, connecting block; 4252, limiting rod 1; 4253, compression spring 2; 4254, contact block 2; 426, driving rope; 4261, sliding plate; 4262, compression spring 3; 4263, limiting cylinder; 427, connecting rope; 428, compression spring 4; 429, limiting plate; 43, electric telescopic rod 1; 5, Fixed structure; 51. Top plate; 52. Compression spring five; 53. Fixed rod; 54. Rack one; 55. Rack two; 56. Gear one; 6. Performance detection structure; 61. Electric telescopic rod two; 62. Mounting seat; 63. Pull-off performance detection component; 631. Connecting column; 632. Gear two; 633. L-shaped limit arm; 634. Rack three; 635. Double-head telescopic rod; 64. Plug-in performance detection component; 641. L-shaped clamp arm; 642. Fixed plate; 643. Limit rod two; 644. Compression spring six; 645. Limit groove; 7. Wiring harness; 71. Plastic packaging; 72. Connecting wire; 73. Female connector; 74. Male connector. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] Embodiment 1, as Figure 1 and Figure 2As shown, an electric vehicle wiring harness detection device includes a pedestal 1, a control terminal 2 is fixedly connected to the left front end, a support frame 3 is fixedly connected to the upper end of the pedestal 1, a rubber pad 11 is fixedly connected to the middle of the upper end of the pedestal 1, a pressing structure 4 is arranged on the upper end of the support frame 3 and extends to the lower end of the support frame 3, a fixing structure 5 fixedly connected to the pressing structure 4 is symmetrically arranged on the left and right inner surface of the support frame 3, and a performance detection structure 6 is symmetrically arranged at the lower part of one end of the vertical parts of the support frame 3 that are close to each other.

[0037] It should be particularly noted that the above-mentioned control terminal 2 is a conventional control device for controlling the extension and retraction of each telescopic device therein, and its control methods are mature technical means in the prior art, and the structure has been widely used in the prior art. The present invention will not elaborate on its internal structure, operating principle, wiring, and control method.

[0038] It should be noted that the reference Figure 8 The detected wire harness 7 is composed of a plastic package 71, a connecting wire 72, a female connector 73 and a male connector 74, wherein the plastic package 71 is used to fix the connecting wire 72 to prevent it from falling off, the left and right sides of the connecting wire 72 are buckled with the female connector 73 through press-fit terminals, and the male connector 74 is plugged into the inner side of the female connector 73 and locked by a self-locking buckle. It is one of the conventional wire harnesses in electric vehicles, and the present invention is mainly used to perform physical property tests on such wire harnesses.

[0039] During the operation of this embodiment, the pressing structure 4 is driven by the control end 2 to move, and the rubber pad 11 is used to compress and fix the plastic seal 71. At the same time, the pressing structure 4 is used to synchronously fix the female connectors 73 on both sides. In this process, the control end 2 and the performance detection structure 6 are used to clamp the male connector 74, and the plug-in and pull-out force of the connector is detected. In addition, the control end 2 switches the fixed state of the pressing structure 4, and the performance detection structure 6 continues to move to lock the female connector 73, and the pull-out force at the crimping point is detected, thereby realizing the physical performance detection of the wiring harness 7 to ensure its stability and safety.

[0040] Embodiment 2. Based on embodiment 1, this embodiment pulls the wedge-shaped slider 421 to slide along the lower end of the support platform 41 through the cooperation of the electric telescopic rod 43 and the driving rope 426, and presses the contact block 422 by the wedge-shaped slider 421 to cause it to move downward, and utilizes the height difference of the two contact blocks 422 on the same side to realize the alternating compression and fixation of the connecting line 72 and the female connector 73, thereby cooperating with the morphological change of the performance detection structure 6 to realize the alternating detection of the pull-off force at the crimping point and the plug-in force of the connector, thereby realizing the detection of different performances, reducing the process of multiple replacement of detection equipment, improving detection efficiency, and at the same time reducing the operating procedures of personnel and reducing detection errors.

[0041] Specifically, in order to realize the alternate fixing of the connecting wire 72 and the female connector 73 of the wiring harness 7, refer to Figure 2 The pressing structure 4 includes a support platform 41 fixedly connected to the upper end of the support frame 3 through a connecting rod, an electric telescopic rod 43 is fixedly installed on the upper end of the support platform 41 through a mounting frame, a compression assembly 42 is symmetrically arranged on the lower end of the support platform 41, and an output end of the electric telescopic rod 43 is fixedly connected to the compression assembly 42.

[0042] The support platform 41 is used to provide an installation place for the electric telescopic rod 43 and the pressing assembly 42. The extension and retraction of the electric telescopic rod 43 are controlled by the control end 2. When the piston rod is located at different positions, the action state of the pressing assembly 42 is also different:

[0043] When the telescopic rod is retracted, the pressing assembly 42 compacts the female connector 73 to fix it in a predetermined position. At this time, the plug-in resistance performance of the male connector 74 and the female connector 73 is tested by the performance testing structure 6.

[0044] When the telescopic rod is extended, the fixed state of the compression component 42 is changed, the connecting wire 72 is compacted, and the female connector 73 is released. At this time, the female connector 73 is pulled by the performance detection structure 6 to detect the pull-off resistance performance of the crimping joint between the connecting wire 72 and the female connector 73.

[0045] Further, in order to drive the contact block 422 to press downward alternately, thereby sequentially pressing the connecting wire 72 and the female connector 73, refer to Figure 3 and Figure 5 The compression assembly 42 includes two wedge-shaped sliders 421 that are symmetrically distributed in a circle front and back, and the upper parts of the ends of the two wedge-shaped sliders 421 that are close to each other are fixedly connected to each other and are slidably connected to the lower end of the support platform 41. The ends of the two wedge-shaped sliders 421 that are close to the electric telescopic rod 43 are fixedly connected to a driving rope 426 that is fixedly connected to the piston rod at the output end of the electric telescopic rod 43. The ends of the two wedge-shaped sliders 421 that are away from the electric telescopic rod 43 are fixedly connected to compression springs 428. The ends of the compression springs 428 that are away from the wedge-shaped sliders 421 are fixedly connected to a limit plate 429 that is fixedly connected to the lower end of the support platform 41 and the upper end of the support frame 3.

[0046] The compression assembly 42 also includes two contact blocks 422 that are symmetrically distributed in a circle front to back. The lower ends of the two contact blocks 422 are fixedly connected to sliding rods 424. The lower ends of the two sliding rods 424 pass through the upper end of the support frame 3 and extend to the lower end of the support frame 3 and are fixedly connected to a compression component 425. The lower ends of the two contact blocks 422 are fixedly connected to a compression spring 423 that is fixedly connected to the upper end of the support frame 3. The upper ends of the contact blocks 422 are tightly attached to the inclined portion of the wedge-shaped slider 421 through a pulley.

[0047] First, the inclined surfaces of the two wedge-shaped sliders 421 at the front are located on the side close to the electric telescopic rod 43, and the inclined surfaces of the two wedge-shaped sliders 421 at the rear are located on the side away from the electric telescopic rod 43. When the wedge-shaped sliders 421 move, since the two wedge-shaped sliders 421 are circumferentially symmetrical, the two contact blocks 422 on the same side will move in opposite directions. At the same time, the pressing components 425 on the lower side are distributed in sequence. The pressing component 425 on the side away from the electric telescopic rod 43 is fixed together with the contact block 422 at the front, and the position of the female connector 73 is corresponding to the lower side thereof. The pressing component 425 on the side close to the electric telescopic rod 43 is fixed together with the contact block 422 at the rear, and the position of the connecting line 72 is corresponding to the lower side thereof. Under this premise:

[0048] When the electric telescopic rod 43 retracts and drives the driving rope 426 to move, the two wedge-shaped sliders 421 connected thereto will slide toward the electric telescopic rod 43, whereby the wedge-shaped slider 421 at the front will press the contact block 422 to make it descend, and drive the pressing component 425 to descend through the sliding rod 424, and the wedge-shaped slider 421 at the rear will rise tightly on the inclined surface of the wedge-shaped slider 421 under the action of the compression spring 423; that is, when the electric telescopic rod 43 retracts, the pressing component 425 on the lower side of the contact block 422 that is in contact with the front wedge-shaped slider 421 will descend, thereby compacting and fixing the female head 73;

[0049] When the electric telescopic rod 43 is extended to drive the driving rope 426 to move, the two wedge-shaped sliders 421 connected thereto will slide towards the direction close to the electric telescopic rod 43 under the action of the limit plate 429, thereby, the wedge-shaped slider 421 located at the rear will press the contact block 422 to make it descend, and drive the pressing component 425 to descend through the sliding rod 424, and the wedge-shaped slider 421 located at the front will rise tightly on the inclined surface of the wedge-shaped slider 421 under the action of the compression spring 423; that is, when the electric telescopic rod 43 is extended, the pressing component 425 on the lower side of the contact block 422 that is in contact with the rear wedge-shaped slider 421 will descend, thereby compacting and fixing the connecting line 72.

[0050] Further, in order to achieve traction and buffering of the wedge-shaped slider 421, see Figure 4The upper end of the support platform 41 is located at the lower side of the electric telescopic rod 43 and is fixedly connected to the limiting cylinder 4263. The top wall of the inner surface of the limiting cylinder 4263 is fixedly connected to a compression spring 4262. The lower end of the compression spring 4262 is fixedly connected to a sliding plate 4261 which is slidably connected to the inner surface of the limiting cylinder 4263. The inner surface of the sliding plate 4261 is fixedly connected to the outer surface of the driving rope 426. The piston rod at the output end of the electric telescopic rod 43 passes through the upper end of the limiting cylinder 4263 and extends to the inner cavity of the limiting cylinder 4263 and is fixedly connected to the driving rope 426. The driving rope 426 is fixedly connected to a connecting rope 427 which is fixedly connected to the fixed structure 5 at the bifurcation.

[0051] The sliding plate 4261 and the compression spring three 4262 are mainly used to assist in keeping the driving rope 426 in a taut state when the electric telescopic rod 1 43 is extended or retracted, in cooperation with the limiting plate 429 and the fixed structure 5.

[0052] Further, in order to achieve compression and fixation of the connecting wire 72 and the female connector 73, refer to Figure 4 and Figure 5 The pressing component 425 includes a connecting block 4251 fixedly connected to the lower end of the adjacent sliding rod 424, the inner surface of the connecting block 4251 is symmetrically slidably connected to a limiting rod 4252 in the front and rear directions, the lower ends of the two limiting rods 4252 are commonly fixedly connected to a contact block 4254, and the upper end of the contact block 4254 and the lower end of the connecting block 4251 are commonly fixedly connected to a compression spring 4253 symmetrically distributed in the front and rear directions and sleeved on the outer surface of the adjacent limiting rod 4252.

[0053] The bottom of the contact block 4254 is made of rubber material, which is soft but has high friction, and can reduce the horizontal movement of the connecting wire 72 through friction resistance. As we all know, in order to ensure insulation and reduce costs, the external material of the terminal is basically plastic, which has a relatively low hardness. The use of rubber material for compression and fixation can reduce damage to the female head 73 and avoid cracking and damage of the female head 73 caused by excessive compression. At the same time, the compression spring 4253 can also provide buffering, providing a certain elastic space while maintaining the downward pressure to avoid damage to the connecting wire 72.

[0054] Embodiment 3: Based on embodiment 2, this embodiment further utilizes the cooperation between the driving rope 426 and the rack 1 54, and drives the fixing rod 53 to move downward through the meshing action of the gear 1 56 and the rack 2 55, and utilizes the fixing rod 53 to compress and fix the plastic package 71 and the connecting wire 72, so as to avoid the relative displacement of the plastic package 71 and the connecting wire 72 during the traction detection of the performance detection structure 6, which affects the detection accuracy, and reduce the defective products that pass the inspection due to the deviation of the wiring harness 7 during the pulling process, thereby ensuring the yield rate.

[0055] Specifically, to achieve the compression and fixation of the plastic seal 71 and the connecting wire 72, refer to Figure 6 and Figure 7 The fixed structure 5 includes a top plate 51, and the support frame 3 is symmetrically provided with a slide groove 31. The lower end of the top plate 51 is fixedly connected to a fixing rod 53, and the lower end of the fixing rod 53 penetrates the upper end of the support frame 3 and extends to the lower end of the support frame 3 and is slidably connected to the through groove. The lower end of the top plate 51 is fixedly connected to a compression spring 52 which is sleeved on the outer surface of the fixing rod 53 and fixedly connected to the upper end of the support frame 3. The inner surface of the slide groove 31 is rotatably connected to a gear 56, and one end of the fixing rod 53 close to the gear 56 is fixedly connected to a rack 2 55 meshing with the gear 1 56. The bottom wall of the inner surface of the slide groove 31 is slidably connected to a rack 54 meshing with the gear 1 56, and one end of the rack 54 away from the fixing rod 53 is fixedly connected to a branch of an adjacent connecting rope 427, and the rack 54 is slidably connected to the fixing rod 53 through a straight groove.

[0056] When the connecting rope 427 moves upward, it will pull the rack 1 54 to slide along the slide groove 31 toward the side of the electric telescopic rod 1 43, thereby driving the gear 1 56 to rotate. During the rotation of the gear 1 56, the fixing rod 53 will be driven to slide downward through the rack 2 55, thereby achieving compression and fixation of the plastic seal 71 and the connecting wire 72. At this time, the two compression components 425 located on the inner side are separated from the connecting wire 72, so it is necessary to additionally fix the connecting wire 72 and the plastic seal 71 through the fixing structure 5;

[0057] When the connecting line 72 is pressed and fixed by the two inner compression components 425, the connecting line 72 has been fixed and no additional fixation is required. At this time, the top plate 51 rises under the action of the compression spring 52, and the three parts are reset through the mutual engagement transmission of the rack 2 55, the gear 1 56 and the rack 1 54.

[0058] Embodiment 4. Based on Embodiment 3, this embodiment uses the action of the electric telescopic rod 2 61 and the mounting seat 62 to clamp and fix the female head 73 and the male head 74 from both sides, and uses the action of the plug-in performance detection component 64 on the female head 73 to detect the plug-in and pull-out force of the connector at the terminal of the wiring harness 7. At the same time, the double-headed telescopic rod 635 and the rack 3 634 cooperate with the gear 2 632 to drive the L-shaped limit arm 633 to rotate, and the female head 73 is clamped. The pull-out force of the crimping point of the female head 73 and the connecting wire 72 is detected, so as to realize the detection of different physical properties of the same wiring harness 7, reduce the process of transfer between equipment, and improve the detection efficiency.

[0059] Specifically, to test the pull-off force at the crimping point and the plug-in and pull-out force of the connector, refer to Figure 8The performance detection structure 6 includes an electric telescopic rod 61 fixedly connected to the side of the vertical part of the support frame 3 away from the rubber pad 11, the piston rod at the output end of the electric telescopic rod 61 passes through the adjacent outer end surface of the support frame 3 and extends to the inner side of the support frame 3 and is fixedly connected to a mounting seat 62 slidably connected to the upper end of the base 1, and the end of the mounting seat 62 away from the electric telescopic rod 61 is symmetrically provided with a plug-in performance detection component 64, and the upper end and front and rear ends of the mounting seat 62 are jointly provided with a pull-off performance detection component 63.

[0060] Further, in order to detect the insertion and extraction force of the docking plug, refer to Fig. 9 The plug-in / pull-out performance detection component 64 includes a limiting groove 645 opened at one end of the mounting seat 62 away from the electric telescopic rod 61, an L-shaped clamp arm 641 is slidably connected to the inner surface of the limiting groove 645, and an end of the L-shaped clamp arm 641 close to the electric telescopic rod 61 is symmetrically fixedly connected to the limiting rod 643, and the outer surfaces of the two limiting rods 643 are slidably connected to a fixing plate 642 fixedly connected to the mounting seat 62, and the ends of the two limiting rods 643 close to the fixing plate 642 are fixedly connected to a compression spring 644 fixedly connected to the fixing plate 642, and a friction pad is fixedly installed on one end of the L-shaped clamp arm 641 close to the electric telescopic rod 61.

[0061] When the electric telescopic rod 2 61 drives the mounting seat 62 to approach the male head 74, the arc surface of the L-shaped clamp arm 641 will first contact the male head 74, and because the female head 73 is fixed by the compression component 425, the male head 74 cannot be displaced accordingly, so the plug-in performance detection component 64 will be squeezed open by the male head 74 and tightly fit on both sides of the male head 74. At this time, the electric telescopic rod 2 61 shrinks back, and under the action of the compression spring 6 644, the L-shaped clamp arm 641 clamps inward and clamps the male head 74 through the inner friction pad, thereby testing the plug-in and pull-out bearing capacity of the connector according to the provisions of QBT5242-2018 "Wire Harness for Electric Bicycles".

[0062] Further, in order to detect the pull-off force of the crimping joint, refer to Fig.10 The pull-off performance detection component 63 includes an L-shaped limit arm 633 rotatably connected to one end of the mounting seat 62 away from the electric telescopic rod 2 61 and a double-headed telescopic rod 635 fixedly connected to the middle part of the upper end of the mounting seat 62, the inner surface of the L-shaped limit arm 633 is fixedly connected to a connecting column 631, the upper end of the connecting column 631 passes through the inner surface of the mounting seat 62 and extends to the upper end of the mounting seat 62, the part of the connecting column 631 located at the upper end of the mounting seat 62 is fixedly connected to a gear 2 632, the outer surface of the gear 2 632 is meshed with a rack 3 634 slidably connected to the upper end of the mounting seat 62 near the electric telescopic rod 2 61, and the end of the rack 3 634 near the electric telescopic rod 2 61 is fixedly connected to one of the output end piston rods of the double-headed telescopic rod 635.

[0063] After the insertion retention force test of the female head 73 and the male head 74 is completed, the electric telescopic rod 43 moves. At this time, the two pressing parts 425 located on the inner side compress and fix the connecting line 72, and the two pressing parts 425 located on the outer side are separated from the female head 73. The double-headed telescopic rod 635 moves to drive the racks three 634 on both sides to move away from each other. At this time, under the action of the rack three 634 and the gear two 632, the connecting column 631 drives the L-shaped limit arm 633 to rotate, and snaps inward to fix the female head 73 and retracts the electric telescopic rod two 61, and pulls the female head 73 through the mounting seat 62 and the L-shaped limit arm 633, so as to detect the pull-off bearing capacity of the crimping joint between the connecting line 72 and the male head 74 according to the provisions of QBT5242-2018 "Electric Bicycle Wiring Harness".

[0064] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electric vehicle wiring harness detection device, comprising a pedestal (1), a control end (2) fixedly connected to the left front end, a support frame (3) fixedly connected to the upper end of the pedestal (1), and a rubber pad (11) fixedly connected to the middle of the upper end of the pedestal (1), characterized in that: The upper end of the support frame (3) is provided with a compression structure (4) which passes through the upper end and extends to the lower end of the support frame (3); the inner surface of the support frame (3) is symmetrically provided with a fixing structure (5) fixedly connected to the compression structure (4); and the lower part of one end of the vertical parts of the support frame (3) which are close to each other is symmetrically provided with a performance detection structure (6).

2. The electric vehicle wiring harness detection device according to claim 1, characterized in that: The compression structure (4) comprises a support platform (41) fixedly connected to the upper end of the support frame (3) via a connecting rod, an electric telescopic rod (43) is fixedly mounted on the upper end of the support platform (41) via a mounting frame, a compression assembly (42) is symmetrically arranged at the lower end of the support platform (41), and an output end of the electric telescopic rod (43) is fixedly connected to the compression assembly (42).

3. The electric vehicle wiring harness detection device according to claim 2, characterized in that: The compression assembly (42) comprises two wedge-shaped sliders (421) which are symmetrically distributed in a circular pattern in front and back. The upper parts of the ends of the two wedge-shaped sliders (421) close to each other are fixedly connected to each other and are slidably connected to the lower end of the support platform (41). The ends of the two wedge-shaped sliders (421) close to the electric telescopic rod (43) are fixedly connected to a driving rope (426) fixedly connected to the piston rod at the output end of the electric telescopic rod (43). The ends of the two wedge-shaped sliders (421) away from the electric telescopic rod (43) are fixedly connected to a compression spring (428). The ends of the compression spring (428) away from the wedge-shaped sliders (421) are fixedly connected to a limit plate (429) fixedly connected to the lower end of the support platform (41) and the upper end of the support frame (3).

4. The electric vehicle wiring harness detection device according to claim 3, characterized in that: The compression assembly (42) further comprises two contact blocks (422) which are symmetrically distributed in a circular pattern in the front and rear directions. The lower ends of the two contact blocks (422) are fixedly connected to sliding rods (424). The lower ends of the two sliding rods (424) penetrate the upper end of the support frame (3) and extend to the lower end of the support frame (3) and are fixedly connected to a compression component (425). The lower ends of the two contact blocks (422) are fixedly connected to a compression spring (423) which is fixedly connected to the upper end of the support frame (3). The upper end of the contact block (422) is tightly attached to the inclined surface of the wedge-shaped slider (421) via a pulley.

5. The electric vehicle wiring harness detection device according to claim 3, characterized in that: The upper end of the support platform (41) is located at the lower side of the electric telescopic rod (43) and is fixedly connected to the limiting cylinder (4263); the inner surface top wall of the limiting cylinder (4263) is fixedly connected to a compression spring (4262); the lower end of the compression spring (4262) is fixedly connected to a sliding plate (4261) that is slidably connected to the inner surface of the limiting cylinder (4263); the inner surface of the sliding plate (4261) is fixedly connected to the outer surface of the driving rope (426); the piston rod at the output end of the electric telescopic rod (43) passes through the upper end of the limiting cylinder (4263) and extends to the inner cavity of the limiting cylinder (4263) and is fixedly connected to the driving rope (426); the driving rope (426) is fixedly connected to a connecting rope (427) that is fixedly connected to the fixed structure (5) at the bifurcation.

6. The electric vehicle wiring harness detection device according to claim 4, characterized in that: The compression component (425) includes a connecting block (4251) fixedly connected to the lower end of the adjacent sliding rod (424); the inner surface of the connecting block (4251) is symmetrically slidably connected to a limiting rod (4252) in the front and rear directions; the lower ends of the two limiting rods (4252) are commonly fixedly connected to a contact block (4254); the upper end of the contact block (4254) and the lower end of the connecting block (4251) are commonly fixedly connected to a compression spring (4253) symmetrically distributed in the front and rear directions and sleeved on the outer surface of the adjacent limiting rod (4252).

7. The electric vehicle wiring harness detection device according to claim 3, characterized in that: The fixing structure (5) comprises a top plate (51), the support frame (3) is symmetrically provided with a slide groove (31), the lower end of the top plate (51) is fixedly connected with a fixing rod (53), the lower end of the fixing rod (53) passes through the upper end of the support frame (3) and extends to the lower end of the support frame (3) and is slidably connected to the through groove, the lower end of the top plate (51) is fixedly connected with a compression spring (52) which is sleeved on the outer surface of the fixing rod (53) and fixedly connected to the upper end of the support frame (3), and the slide groove (3 1) The inner surface is rotatably connected with a gear 1 (56); the end of the fixed rod (53) close to the gear 1 (56) is fixedly connected with a rack 2 (55) meshing with the gear 1 (56); the bottom wall of the inner surface of the slide groove (31) is slidably connected with a rack 1 (54) meshing with the gear 1 (56); the end of the rack 1 (54) away from the fixed rod (53) is fixedly connected to the adjacent branch of the connecting rope (427); the rack 1 (54) is slidably connected with the fixed rod (53) through a straight groove.

8. The electric vehicle wiring harness detection device according to claim 1, characterized in that: The performance detection structure (6) comprises an electric telescopic rod 2 (61) fixedly connected to a side of the vertical part of the support frame (3) away from the rubber pad (11); a piston rod at the output end of the electric telescopic rod 2 (61) penetrates the adjacent outer end surface of the support frame (3) and extends to the inner side of the support frame (3) and is fixedly connected to a mounting seat (62) slidably connected to the upper end of the pedestal (1); an end of the mounting seat (62) away from the electric telescopic rod 2 (61) is symmetrically provided with a plug-in performance detection component (64) in front and back; and a pull-out performance detection component (63) is commonly provided at the upper end and front and rear ends of the mounting seat (62).

9. The electric vehicle wiring harness detection device according to claim 8, characterized in that: The plug-in / pull-out performance detection component (64) comprises a limiting groove (645) provided at one end of the mounting seat (62) away from the second electric telescopic rod (61); an L-shaped clamp arm (641) is slidably connected to the inner surface of the limiting groove (645); an end of the L-shaped clamp arm (641) close to the second electric telescopic rod (61) is symmetrically fixedly connected to the second limiting rod (643) in an upper and lower manner; the outer surfaces of the two second limiting rods (643) are slidably connected to a fixing plate (642) fixedly connected to the mounting seat (62); the ends of the two second limiting rods (643) close to the fixing plate (642) are fixedly connected to a compression spring six (644) fixedly connected to the fixing plate (642); and a friction pad is fixedly installed on the end of the L-shaped clamp arm (641) close to the second electric telescopic rod (61).

10. The electric vehicle wiring harness detection device according to claim 8, characterized in that: The pull-off performance detection component (63) comprises an L-shaped limit arm (633) rotatably connected to one end of the mounting seat (62) away from the second electric telescopic rod (61) and a double-headed telescopic rod (635) fixedly connected to the middle part of the upper end of the mounting seat (62); the inner surface of the L-shaped limit arm (633) is fixedly connected to a connecting column (631); the upper end of the connecting column (631) passes through the inner surface of the mounting seat (62) and extends to the upper end of the mounting seat (62); the part of the connecting column (631) located at the upper end of the mounting seat (62) is fixedly connected to the second gear (632); the outer surface of the second gear (632) is meshed with a rack (634) slidably connected to the upper end of the mounting seat (62) on a side close to the second electric telescopic rod (61); the end of the rack (634) close to the second electric telescopic rod (61) is fixedly connected to one of the output end piston rods of the double-headed telescopic rod (635).

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