An electric vehicle wiring harness detection device

Abstract

The present invention discloses an electric vehicle wire harness detection device, specifically related to the technical field of electric vehicle wire harness detection. It includes a pedestal, and a support frame is fixedly connected to the upper end of the pedestal. A pressing structure is arranged at the upper end of the support frame and extends through its upper end to the lower end of the support frame. Fixing structures fixedly connected to the pressing structure are symmetrically arranged on the left and right inner surfaces of the support frame. Performance detection structures are symmetrically arranged at the lower parts of the mutually approaching ends of the vertical parts of the support frame. For the electric vehicle wire harness detection device of the present invention, the pressing structure is driven to act through the action of the control end, and the female heads on both sides are synchronously fixed by the action of the pressing structure. During this process, the male head is clamped by the cooperation of the control end and the performance detection structure, and the insertion and extraction force of the connector is detected. At the same time, with the continuous action of the performance detection structure, the female head is buckled and the pull-off force at its crimping part is detected, thereby realizing the physical performance detection of the wire harness.

Description

Technical Field

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

[0002] In the current electric vehicle market, two-wheeled electric vehicles are widely welcomed due to 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 for consumers and manufacturers. Among them, the electric vehicle wire harness, as a key component connecting various electronic components of the electric vehicle, the stability and reliability of its performance are crucial for the normal operation of the entire vehicle. The electric vehicle wire 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 usage conditions.

[0003] Currently, the detection technology for two-wheeled electric vehicle wire harnesses mainly relies on traditional detection methods. These methods include visually inspecting the color sequence of wire harness terminals and sequentially measuring the wire harness on the three-electric system using a multimeter. These traditional detection methods are not only inefficient but also easily affected by human factors and environmental factors, making it difficult to ensure the accuracy and consistency of detection results. In addition, the existing detection technology mainly focuses on the testing of electrical performance, such as insulation resistance, withstand voltage, salt spray requirements, and flame retardant requirements, while relatively lacking the detection of the physical properties of wire harnesses, such as the insertion and extraction force of connectors and the pull-off force at the crimping point.

[0004] Specifically, the existing detection methods cannot effectively detect the insertion and extraction force of wire harness connectors and the pull-off force at the crimping point. These physical property parameters are crucial for ensuring the stability and reliability of wire harnesses in actual use.

[0005] If the insertion and extraction force of the connector does not meet the standard, it may cause the wire harness to fall off when the vehicle vibrates or is subjected to external forces, resulting in discontinuous electrical connections 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 two-wheeled electric vehicles. Summary of the Invention

[0007] The main purpose of the present invention is to provide an electric vehicle wire harness detection device, which can effectively solve the problem that existing equipment cannot detect the physical properties of electric vehicle wire harnesses.

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

[0009] An electric vehicle wire harness detection device includes a pedestal. A control end is fixedly connected to the left part of the front end of the pedestal. A support frame is fixedly connected to the upper end of the pedestal. A rubber pad is fixedly connected to the middle of the upper end of the pedestal. A pressing structure is arranged at the upper end of the support frame and extends through its upper end to the lower end of the support frame. Fixed structures fixedly connected to the pressing structure are symmetrically arranged on the left and right inner surfaces of the support frame. Performance detection structures are symmetrically arranged at the lower parts of the mutually approaching ends of the vertical parts of the support frame.

[0010] Preferably, the pressing structure includes a support table fixedly connected to the upper end of the support frame through a connecting rod. An electric telescopic rod I is fixedly installed at the upper end of the support table through a mounting frame. Pressing components are symmetrically arranged at the lower end of the support table. The output end of the electric telescopic rod I is fixedly connected to the pressing components.

[0011] Preferably, the pressing components include two wedge-shaped sliders symmetrically distributed in a circumferential manner front and back. The upper parts of the mutually approaching ends of the two wedge-shaped sliders are fixedly connected to each other and jointly slide on the lower end of the support table. A driving rope fixedly connected to the piston rod of the output end of the electric telescopic rod I is fixedly connected to the ends of the two wedge-shaped sliders close to the electric telescopic rod I. A compression spring IV is fixedly connected to the ends of the two wedge-shaped sliders away from the electric telescopic rod I. The end of the compression spring IV away from the wedge-shaped slider is fixedly connected to a limiting plate fixedly connected to the lower end of the support table and the upper end of the support frame.

[0012] Preferably, the pressing components further include two contact blocks I symmetrically distributed in a circumferential manner front and back. Sliding rods are fixedly connected to the lower ends of the two contact blocks I. The lower ends of the two sliding rods all penetrate through the upper end of the support frame and extend to the lower end of the support frame and are fixedly connected to pressing parts. Compression springs I fixedly connected to the upper end of the support frame are fixedly connected to the lower ends of the two contact blocks I. The upper ends of the contact blocks I are closely attached to the inclined plane parts of the wedge-shaped sliders through pulleys.

[0013] Preferably, a limiting cylinder is fixedly connected to the part of the upper end of the support table below the electric telescopic rod I. A compression spring III is fixedly connected to the top wall of the inner surface of the limiting cylinder. A sliding plate slidably connected to the inner surface of the limiting cylinder is fixedly connected to the lower end of the compression spring III. The inner surface of the sliding plate is fixedly connected to the outer surface of the driving rope. The piston rod of the output end of the electric telescopic rod I penetrates through the upper end of the limiting cylinder and extends into the inner cavity of the limiting cylinder and is fixedly connected to the driving rope. A connecting rope fixedly connected to the fixed structure is fixedly connected to the bifurcation of the driving rope.

[0014] Preferably, the pressing part includes a connecting block fixedly connected to the lower end of the adjacent sliding rod. Limiting rods I are symmetrically slidably connected to the inner surface of the connecting block front and back. A contact block II is fixedly connected to the lower ends of the two limiting rods I together. Compression springs II symmetrically distributed front and back and sleeved on the outer surfaces of the adjacent limiting rods I are fixedly connected to the upper end of the contact block II and the lower end of the connecting block together.

[0015] Preferably, the fixing structure includes a top plate. The support frame is symmetrically provided with sliding grooves on the left and right. The lower end of the top plate is fixedly connected with a fixing rod. The lower end of the fixing rod penetrates through the upper end of the support frame and extends to the lower end of the support frame and is slidably connected with a through groove. The lower end of the top plate is fixedly connected with a fifth compression spring sleeved on the outer surface of the fixing rod and fixedly connected with the upper end of the support frame. The inner surface of the sliding groove is rotatably connected with a first gear. One end of the fixing rod close to the first gear is fixedly connected with a second rack meshing with the first gear. The bottom wall of the inner surface of the sliding groove is slidably connected with a first rack meshing with the first gear. One end of the first rack away from the fixing rod is fixedly connected with an adjacent connecting rope branch. The first rack and the fixing rod are slidably connected through a straight groove.

[0016] Preferably, the performance detection structure includes a second electric telescopic rod fixedly connected to the side of the vertical part of the support frame away from the rubber pad. The piston rod of the output end of the second electric telescopic rod penetrates through the adjacent outer end surface of the support frame and extends to the inner side of the support frame and is fixedly connected with a mounting seat slidably connected to the upper end of the pedestal. Plug and unplug performance detection components are symmetrically arranged at the front and back of one end of the mounting seat away from the second electric telescopic rod. A pull-off performance detection component is arranged on the upper end and the front and back ends of the mounting seat together.

[0017] Preferably, the plug and unplug performance detection component includes a limiting groove opened at one end of the mounting seat away from the second electric telescopic rod. The inner surface of the limiting groove is slidably connected with an L-shaped clamping arm. The upper and lower ends of one end of the L-shaped clamping arm close to the second electric telescopic rod are symmetrically and fixedly connected with second limiting rods. The outer surfaces of the two second limiting rods are jointly slidably connected with a fixing plate fixedly connected with the mounting seat. One end of each of the two second limiting rods close to the fixing plate is fixedly connected with a sixth compression spring fixedly connected with the fixing plate. A friction pad is fixedly installed at one end of the L-shaped clamping arm close to the second electric telescopic rod.

[0018] Preferably, the pull-off performance detection component includes an L-shaped limiting arm rotatably connected to one end of the mounting seat away from the second electric telescopic rod and a double-headed telescopic rod fixedly connected to the middle of the upper end of the mounting seat. A connecting column is fixedly connected to the inner surface of the L-shaped limiting arm. The upper end of the connecting column penetrates 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 with a second gear. A third rack slidably connected to the upper end of the mounting seat is meshed with one side of the outer surface of the second gear close to the second electric telescopic rod. One end of the third rack close to the second electric telescopic rod is fixedly connected with the piston rod of one of the output ends 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 pressing structure to act through the control end, cooperates with the rubber pad to press and fix the plastic package, and simultaneously uses the pressing structure to synchronously fix the female heads on both sides. During this process, the control end and the performance detection structure cooperate to clamp the male head and detect the insertion and extraction force of the connector. In addition, the control end switches the fixed state of the pressing structure, and at the same time, cooperates with the continued action of the performance detection structure to fasten the female head and detect the pull-off force at its crimping position, thereby realizing the physical performance detection of the wire harness and ensuring its stability and safety.

[0021] 2. The present invention uses the cooperation of the first electric telescopic rod and the driving rope to pull the wedge-shaped slider to slide along the lower end of the support table, and through the pressure of the wedge-shaped slider on the first contact block, it prompts the first contact block to move downward. The height difference between the two first contact blocks on the same side is used to alternately press and fix the connecting wire and the female head, so as to cooperate with the morphological change of the performance detection structure to alternately detect the pull-off force at the crimping position and the insertion and extraction force of the connector, thereby realizing the detection of different performances, reducing the process of replacing the detection equipment multiple times, improving the detection efficiency, and at the same time reducing the operation process of personnel and reducing the detection error.

[0022] 3. The present invention uses the cooperation of the driving rope and the first rack, drives the fixed rod to move downward through the meshing action of the first gear and the second rack, and uses the fixed rod to press and fix the plastic package and the connecting wire, avoiding the relative displacement of the plastic package and the connecting wire during the traction detection of the performance detection structure, which affects the detection accuracy, reducing the passing of defective products due to the wire harness offset during the pulling process, and ensuring the yield rate.

[0023] 4. The present invention uses the second electric telescopic rod and the mounting seat to clamp and fix the female head and the male head from both sides, uses the insertion and extraction performance detection component to detect the insertion and extraction force of the connector of the wire harness terminal, and at the same time uses the double-headed telescopic rod and the third rack to cooperate with the second gear to drive the L-shaped limiting arm to rotate, clamp the female head, and detect the pull-off force at the crimping position of the female head and the connecting wire, realizing the detection of different physical performances of the same wire harness, reducing the process of transferring between equipment, and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

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

[0026] Figure 3 is the structural schematic diagram of the pressing component of the present invention;

[0027] Figure 4 is the structural schematic diagram of the pressing part of the present invention;

[0028] Figure 5Schematic diagram of the connection relationship between the pressing component and the pressing part of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the fixing structure of the present invention;

[0030] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the local structure at A in

[0031] Figure 8 Schematic diagram of the structure of the performance detection structure of the present invention;

[0032] Figure 9 Schematic diagram of the connection state between the plugging and unplugging performance detection part and the male head of the present invention;

[0033] Figure 10 Schematic diagram of the buckling state between the pull-off performance detection part and the female head of the present invention.

[0034] In the figure: 1, pedestal; 11, rubber pad; 2, control end; 3, support frame; 31, chute; 4, pressing structure; 41, support table; 42, pressing component; 421, wedge-shaped slider; 422, contact block 1; 423, compression spring 1; 424, sliding rod; 425, pressing part; 4251, connection 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, fixing structure; 51, top plate; 52, compression spring 5; 53, fixing rod; 54, rack 1; 55, rack 2; 56, gear 1; 6, performance detection structure; 61, electric telescopic rod 2; 62, mounting seat; 63, pull-off performance detection part; 631, connecting column; 632, gear 2; 633, L-shaped limiting arm; 634, rack 3; 635, double-headed telescopic rod; 64, plugging and unplugging performance detection part; 641, L-shaped clamping arm; 642, fixing plate; 643, limiting rod 2; 644, compression spring 6; 645, limiting groove; 7, wire harness; 71, plastic seal; 72, connecting wire; 73, female head; 74, male head. Detailed implementation manners

[0035] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0036] Example 1, as Figure 1 and Figure 2As shown in the figure, an electric vehicle wire harness detection device includes a pedestal 1. At the left part of the front end of the pedestal 1, a control end 2 is fixedly connected. At the upper end of the pedestal 1, a support frame 3 is fixedly connected. In the middle of the upper end of the pedestal 1, a rubber pad 11 is fixedly connected. At the upper end of the support frame 3, a pressing structure 4 is provided which penetrates through its upper end and extends to the lower end of the support frame 3. On the left and right sides of the inner surface of the support frame 3, fixing structures 5 fixedly connected to the pressing structure 4 are symmetrically arranged. At the lower part of the mutually close ends of the vertical parts of the support frame 3, performance detection structures 6 are symmetrically arranged.

[0037] It should be specifically noted that the above control end 2 is a conventional control device used to control the extension and retraction of each telescopic device therein. Its control methods are all mature technical means in the prior art, and this structure has been widely applied in the prior art. The present invention will not elaborate on its internal structure, operating principle, wiring, and control methods.

[0038] It should be specifically noted that referring to Figure 8 , the part wire harness 7 to be detected is composed of a plastic seal 71, a connecting wire 72, a female head 73, and a male head 74. The plastic seal 71 is used to fix the connecting wire 72 to prevent it from scattering. Both sides of the connecting wire 72 are buckled to the female head 73 through a pressing terminal. The male head 74 is inserted into the inner side of the female head 73 and locked by a self-locking buckle. It is one of the conventional wire harnesses in electric vehicles. The present invention is mainly used for physical performance detection of such wire harnesses.

[0039] During the operation of this embodiment, the pressing structure 4 is driven to act through the action of the control end 2, and the plastic seal 71 is pressed and fixed in cooperation with the rubber pad 11. At the same time, the two female heads 73 on both sides are synchronously fixed by the action of the pressing structure 4. During this process, the male head 74 is clamped by the cooperation of the control end 2 and the performance detection structure 6, and the plug-in and pull-out force of the connector is detected. In addition, the fixed state of the pressing structure 4 is switched through the control end 2, and at the same time, the female head 73 is buckled tightly in cooperation with the continued action of the performance detection structure 6, and the pull-off force at its crimping part is detected. Thus, the physical performance detection of the wire harness 7 is realized, ensuring its stability and safety.

[0040] Embodiment 2: On the basis of Embodiment 1, in this embodiment, the electric telescopic rod 43 and the driving rope 426 cooperate to pull the wedge-shaped slider 421 to slide along the lower end of the support table 41, and the contact block 422 is forced to move downward by the oppression of the wedge-shaped slider 421. The height difference between the two contact blocks 422 on the same side is used to alternately press and fix the connecting wire 72 and the female head 73, so as to alternately detect the pull-off force at the crimping part and the plug-in and pull-out force of the connector in cooperation with the morphological change of the performance detection structure 6, thereby realizing the detection of different performances, reducing the process of replacing the detection equipment multiple times, improving the detection efficiency, and at the same time reducing the operation process of personnel and reducing the detection error.

[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, for the two wedge-shaped sliders 421 at the front, their inclined surfaces are on the side close to the first electric telescopic rod 43, and for the two wedge-shaped sliders 421 at the rear, their inclined surfaces are on the side away from the first electric telescopic rod 43. When the wedge-shaped sliders 421 move, since the two wedge-shaped sliders 421 are rotationally symmetric, the two contact blocks 422 on the same side will move in opposite directions. At the same time, the pressing components 425 below them are distributed in sequence. The pressing component 425 on the side away from the first electric telescopic rod 43 is fixed to the front contact block 422, and the position corresponding to its lower side is the position of the female head 73. The pressing component 425 on the side close to the first electric telescopic rod 43 is fixed to the rear contact block 422, and the position corresponding to its lower side is the position of the connecting wire 72. On this premise:

[0048] When the first electric telescopic rod 43 retracts and drives the driving rope 426 to move, the two wedge-shaped sliders 421 connected to it will slide towards the first electric telescopic rod 43. Thus, 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. The wedge-shaped slider 421 at the rear will rise closely on the inclined surface of the wedge-shaped slider 421 under the action of the first compression spring 423. That is to say, when the first electric telescopic rod 43 retracts, the pressing component 425 under the contact block 422 that fits with the front wedge-shaped slider 421 will descend, thereby pressing and fixing the female head 73.

[0049] When the first electric telescopic rod 43 extends and drives the driving rope 426 to move, the two wedge-shaped sliders 421 connected to it will slide towards the direction close to the first electric telescopic rod 43 under the action of the limiting plate 429. Thus, the wedge-shaped slider 421 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. The wedge-shaped slider 421 at the front will rise closely on the inclined surface of the wedge-shaped slider 421 under the action of the first compression spring 423. That is to say, when the first electric telescopic rod 43 extends, the pressing component 425 under the contact block 422 that fits with the rear wedge-shaped slider 421 will descend, thereby pressing and fixing the connecting wire 72.

[0050] Furthermore, to realize the traction and buffering of the wedge-shaped slider 421, refer to Figure 4, a part of the upper end of the support platform 41 located below the first electric telescopic rod 43 is fixedly connected with a limiting cylinder 4263. The top wall of the inner surface of the limiting cylinder 4263 is fixedly connected with a third compression spring 4262. The lower end of the third compression spring 4262 is fixedly connected with a sliding plate 4261 which is slidably connected with the inner surface of the limiting cylinder 4263. The inner surface of the sliding plate 4261 is fixedly connected with the outer surface of the driving rope 426. The piston rod at the output end of the first electric telescopic rod 43 penetrates through the upper end of the limiting cylinder 4263 and extends into the inner cavity of the limiting cylinder 4263 and is fixedly connected with the driving rope 426. A connecting rope 427 fixedly connected with the fixing structure 5 is fixedly connected at the bifurcation of the driving rope 426.

[0051] The sliding plate 4261 and the third compression spring 4262 are mainly used to cooperate with the limiting plate 429 and the fixing structure 5 to assist in keeping the driving rope 426 in a taut state when the first electric telescopic rod 43 extends or retracts.

[0052] Furthermore, to realize the pressing and fixing of the connecting wire 72 and the female head 73, refer to Figure 4 and Figure 5 , the pressing component 425 includes a connecting block 4251 fixedly connected with the lower end of the adjacent sliding rod 424. The inner surface of the connecting block 4251 is symmetrically slidably connected with two first limiting rods 4252 in the front and back. The lower ends of the two first limiting rods 4252 are jointly fixedly connected with a second contact block 4254. A second compression spring 4253 which is symmetrically distributed in the front and back and sleeved on the outer surface of the adjacent first limiting rod 4252 is jointly fixedly connected between the upper end of the second contact block 4254 and the lower end of the connecting block 4251.

[0053] The bottom of the second contact block 4254 is made of rubber material. It is soft but has a large frictional force, and can reduce the horizontal movement of the connecting wire 72 through the frictional resistance. As is well known, to ensure insulation and reduce costs, the external material of the terminal is basically plastic, and its hardness is relatively low. Using rubber material for pressing and fixing can reduce the damage to the female head 73 and avoid cracking and damage of the female head 73 caused by excessive pressing. At the same time, the second compression spring 4253 can also provide buffering, provide a certain elastic space while maintaining the downward pressure, and avoid damaging the connecting wire 72.

[0054] Embodiment 3: On the basis of Embodiment 2, this embodiment further utilizes the cooperation of the driving rope 426 and the first rack 54, drives the fixed rod 53 to move downward through the meshing action of the first gear 56 and the second rack 55, and uses the fixed rod 53 to press and fix the plastic seal 71 and the connecting wire 72, avoiding relative displacement of the plastic seal 71 and the connecting wire 72 during the traction detection by the performance detection structure 6, reducing the passing of defective products due to the offset of the wire harness 7 during the pulling process, and ensuring the yield rate.

[0055] Specifically, to realize the pressing and fixing of the plastic seal 71 and the connecting wire 72, refer to Figure 6 andFigure 7 , the fixing structure 5 includes a top plate 51. The support frame 3 is symmetrically provided with sliding grooves 31 on the left and right. The lower end of the top plate 51 is fixedly connected with a fixing rod 53. The lower end of the fixing rod 53 penetrates through the upper end of the support frame 3 and extends to the lower end of the support frame 3 and is slidably connected with a through groove. The lower end of the top plate 51 is fixedly connected with a fifth compression spring 52 sleeved on the outer surface of the fixing rod 53 and fixedly connected with the upper end of the support frame 3. The inner surface of the sliding groove 31 is rotatably connected with a first gear 56. One end of the fixing rod 53 close to the first gear 56 is fixedly connected with a second rack 55 meshing with the first gear 56. The bottom wall of the inner surface of the sliding groove 31 is slidably connected with a first rack 54 meshing with the first gear 56. One end of the first rack 54 away from the fixing rod 53 is fixedly connected with a branch of the adjacent connecting rope 427. The first rack 54 and the fixing rod 53 are slidably connected through a straight groove.

[0056] When the connecting rope 427 moves upward, it will pull the first rack 54 to slide along the sliding groove 31 toward the side of the first electric telescopic rod 43, thereby driving the first gear 56 to rotate. During the rotation of the first gear 56, it will drive the fixing rod 53 to slide downward through the second rack 55, thereby realizing the pressing and fixing of the plastic seal 71 and the connecting wire 72. At this time, the two inner pressing components 425 are separated from the connecting wire 72. Therefore, it is necessary to additionally fix the connecting wire 72 and the plastic seal 71 through the fixing structure 5;

[0057] When the connecting wire 72 is pressed and fixed by the two inner pressing components 425, at this time the connecting wire 72 has been fixed and no additional fixing is required. At this time, under the action of the fifth compression spring 52, the top plate 51 rises, and drives these three parts to reset through the meshing transmission of the second rack 55, the first gear 56 and the first rack 54.

[0058] Embodiment 4. On the basis of Embodiment 3, this embodiment uses the action of the second electric telescopic rod 61 and the mounting seat 62 to clamp and fix the female head 73 and the male head 74 from both sides, uses the action of the plugging and unplugging performance detection component 64 on the female head 73 to detect the plugging and unplugging force of the connector of the wire harness 7 terminals, and at the same time uses the action of the double-headed telescopic rod 635 and the third rack 634 to cooperate with the second gear 632 to drive the L-shaped limiting arm 633 to rotate, and perform a clamping connection on the female head 73, and detect the pull-off force at the crimping part of the female head 73 and the connecting wire 72, so as to realize the detection of different physical properties of the same wire harness 7, reduce the process of transferring between devices, and improve the detection efficiency.

[0059] Specifically, to detect the pull-off force at the crimping part and the plugging and unplugging force of the connector, refer to Figure 8, the performance detection structure 6 includes an electric telescopic rod two 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 two 61 penetrates through the adjacent outer end face of the support frame 3 and extends to the inside of the support frame 3, and is fixedly connected to a mounting seat 62 that is slidably connected to the upper end of the pedestal 1. At the end of the mounting seat 62 away from the electric telescopic rod two 61, plug and unplug performance detection components 64 are symmetrically arranged front and back. A pull-off performance detection component 63 is jointly arranged on the upper end and the front and rear ends of the mounting seat 62.

[0060] Further, to detect the plugging and unplugging force of the docking plug, refer to Figure 9 , the plug and unplug performance detection component 64 includes a limiting groove 645 opened at one end of the mounting seat 62 away from the electric telescopic rod two 61. An L-shaped clamping arm 641 is slidably connected to the inner surface of the limiting groove 645. At the end of the L-shaped clamping arm 641 close to the electric telescopic rod two 61, limiting rods two 643 are symmetrically fixed up and down. A fixing plate 642 fixedly connected to the mounting seat 62 is slidably connected to the outer surfaces of the two limiting rods two 643. At the end of the two limiting rods two 643 close to the fixing plate 642, a compression spring six 644 fixedly connected to the fixing plate 642 is fixedly connected. A friction pad is fixedly installed at the end of the L-shaped clamping arm 641 close to the electric telescopic rod two 61.

[0061] When the electric telescopic rod two 61 drives the mounting seat 62 to approach the male head 74, the arc surface of the L-shaped clamping arm 641 will first contact the male head 74. And since the female head 73 is fixed by the pressing component 425, the male head 74 cannot move correspondingly. Therefore, the plug and unplug performance detection component 64 will be pushed open by the male head 74 and closely fit on both sides of the male head 74. At this time, the electric telescopic rod two 61 retracts inward. Under the action of the compression spring six 644, the L-shaped clamping arm 641 clamps inward and clamps the male head 74 through the inner friction pad, so as to detect the plugging and unplugging bearing force of its connector according to the regulations of QBT5242-2018 "Electric Bicycle Wiring Harness".

[0062] Further, to detect the pull-off force at the crimping place, refer to Figure 10 , the pull-off performance detection component 63 includes an L-shaped limiting arm 633 rotatably connected to one end of the mounting seat 62 away from the electric telescopic rod two 61 and a double-headed telescopic rod 635 fixedly connected to the middle of the upper end of the mounting seat 62. A connecting column 631 is fixedly connected to the inner surface of the L-shaped limiting arm 633. The upper end of the connecting column 631 penetrates through the inner surface of the mounting seat 62 and extends to the upper end of the mounting seat 62. A gear two 632 is fixedly connected to the part of the connecting column 631 located at the upper end of the mounting seat 62. A rack three 634 slidably connected to the upper end of the mounting seat 62 is meshed with the outer surface of the gear two 632 on the side close to the electric telescopic rod two 61. One end of the rack three 634 close to the electric telescopic rod two 61 is fixedly connected to the piston rod of one of the output ends of the double-headed telescopic rod 635.

[0063] After the insertion retention force between the female head 73 and the male head 74 is detected, the first electric telescopic rod 43 operates. At this time, the two pressing components 425 located inside press and fix the connection wire 72, and the two pressing components 425 located outside are separated from the female head 73. The double-headed telescopic rod 635 operates to drive the two 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 limiting arm 633 to rotate, and inwardly buckles to fix the female head 73 and the second electric telescopic rod 61 retracts. The female head 73 is pulled through the mounting seat 62 and the L-shaped limiting arm 633, so as to detect the pull-off bearing capacity of the crimping part between its connection wire 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, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric vehicle wiring harness detection device, comprising a pedestal, a control terminal is fixedly connected to the left front end of the pedestal, a support frame is fixedly connected to the upper end of the pedestal, and a rubber pad is fixedly connected to the middle part of the upper end of the pedestal, characterized in that: 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 a fixing structure fixedly connected to the pressing structure, and the lower part of one end of the vertical part of the support frame close to each other is symmetrically provided with a performance detection structure; 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 1 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 an output end of the electric telescopic rod 1 is fixedly connected to the compression component; The compression assembly includes two wedge-shaped sliders that are symmetrically distributed in a circular pattern in front and behind, 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 that are close to the electric telescopic rod one are fixedly connected to a driving rope that is 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 that is fixedly connected to the lower end of the support platform and the upper end of the support frame; The compression assembly also includes two contact blocks 1 that are symmetrically distributed in a circumference in front and back, the lower ends of the two contact blocks are fixedly connected to sliding rods, the lower ends of the two sliding rods pass through the upper end of the support frame and extend to the lower end of the support frame and are fixedly connected to a compression component, the lower ends of the two contact blocks are fixedly connected to a compression spring 1 that is fixedly connected to the upper end of the support frame, and the upper end of the contact block 1 is tightly attached to the inclined surface of the wedge-shaped slider through a pulley; The upper end of the support platform is located at a 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 that 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 and extends to the inner cavity of the limiting cylinder and is fixedly connected to the driving rope. The bifurcation of the driving rope is fixedly connected to a connecting rope that is fixedly connected to the fixed structure. 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.

2. The electric vehicle wiring harness detection device according to claim 1, characterized in that: 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 that is symmetrically distributed front and rear and sleeved on the outer surface of the adjacent limit rod one.

3. The electric vehicle wiring harness detection device according to claim 1, characterized in that: 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-out performance detection component is commonly provided on the upper end and front and rear ends of the mounting seat.

4. The electric vehicle wiring harness detection device according to claim 3, characterized in that: 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, an L-shaped clamp arm is slidably connected to the inner surface of the limit groove, and one end of the L-shaped clamp arm close to the electric telescopic rod 2 is symmetrically fixedly connected to the limit rod 2 in the upper and lower directions, and the outer surfaces of the two limit rods 2 are slidably connected to a fixing plate fixedly connected to the mounting seat, and one end of the two limit rods 2 close to the fixing plate is fixedly connected to a compression spring 6 fixedly connected to the fixing plate, and one end of the L-shaped clamp arm close to the electric telescopic rod 2 is fixedly installed with a friction pad.

5. The electric vehicle wiring harness detection device according to claim 3, characterized in that: 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, and a side of the outer surface of the gear 2 close to the electric telescopic rod 2 is meshed with a rack 3 slidably connected to the upper end of the mounting seat, and one 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.

Images