Universal detection tool
By designing a universal testing fixture, the issues of universality and cost in the quality testing of high-voltage wire harness sheaths were resolved. This enabled rapid and accurate testing of sheaths of various specifications, reduced production input, and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING HUGUANG AUTOMOBILE ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-01
AI Technical Summary
Existing high-voltage harness sheath installation quality inspection devices are expensive and lack versatility, failing to meet the inspection needs of various sheath specifications. This leads to problems such as improper installation, damage, or omissions, posing safety hazards.
A universal testing fixture was designed. By setting multiple grooves on the top of the mounting base, the sliding mounting base aligns the grooves with the testing mechanism. Combined with the lifting cylinder and positioning holes, it achieves precise positioning. The fixture adopts a detachable base structure and a resistance positioning device to ensure testing accuracy and efficiency.
It enables rapid and accurate testing of high-voltage harness sheaths of various specifications, reduces production costs, improves testing accuracy and efficiency, and avoids safety hazards.
Smart Images

Figure CN224189873U_ABST
Abstract
Description
A general-purpose testing fixture Technical Field
[0001] This utility model relates to the field of high-voltage wiring harness testing technology, specifically to a general-purpose testing fixture. Background Technology
[0002] High-voltage wiring harnesses are an indispensable component inside new energy vehicles. They are mainly used to stably transmit electrical energy, shield external signal interference, and ensure the safe and stable operation of new energy vehicles.
[0003] Before being installed in a vehicle, high-voltage wiring harnesses typically require sheaths at their ends to prevent short circuits, wear, or damage from the external environment, thereby ensuring the stable operation of the vehicle's electrical system.
[0004] In existing technologies, the installation of sheaths mainly relies on manual operation or semi-automated equipment. However, due to the special characteristics of the sheath's material, size, and installation location, problems such as improper installation, damage, or omissions are prone to occur. If these problems are not detected in time, they may lead to serious safety hazards such as insulation failure, short circuits, or even fires in high-voltage wiring harnesses during vehicle operation.
[0005] Currently, the industry mainly uses automated testing devices to inspect the installation quality of high-voltage wire harnesses. However, there are many different models of high-voltage wire harnesses, and testing devices often require high-precision sensors, complex image processing systems, or customized mechanical structures, resulting in high overall costs and making it impossible to guarantee that each type of high-voltage wire harness can be equipped with a testing device. Summary of the Invention
[0006] In view of this, the present invention provides a universal testing fixture that can be used to test high-voltage wire harness sheaths of various specifications, thereby reducing costs.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] A universal testing fixture includes a base, on the top of which are a testing mechanism and a sheath mounting assembly arranged facing each other. The sheath mounting assembly has a sliding mounting seat, the sliding direction of which is perpendicular to the direction in which the testing mechanism and the sheath mounting assembly face each other. The top of the mounting seat has multiple grooves distributed along its sliding direction, each groove used to position and install sheaths of different specifications. Sliding the mounting seat allows any one of the grooves to be aligned with the testing mechanism.
[0009] With the above structure, the grooves of various sizes formed on the top of the mounting base make it easy and quick to test a sheath of a corresponding size. Simply slide the mounting base and align the groove of the corresponding size with the testing mechanism. In addition, the grooves of various sizes increase the application scenarios of the testing mechanism and reduce production input costs.
[0010] Preferably, the sheath mounting assembly further includes a base, the top of which is provided with two parallel slide rails, on which a slider is slidably mounted, and the mounting seat is fixedly mounted on the top of the slider. This structure enables stable and directional sliding of the mounting seat.
[0011] Preferably, the mounting base has an extension at its bottom extending toward the detection mechanism. First positioning holes are distributed on the extension, each corresponding to a groove. A lifting cylinder is mounted on the base, facing the detection mechanism. By sliding the mounting base, the cylinder rod end of the lifting cylinder can pass through each of the first positioning holes. With this structure, by having the cylinder rod end of the lifting cylinder pass through each of the first positioning holes, each groove can be precisely positioned opposite the detection mechanism, thus ensuring detection accuracy.
[0012] Preferably, the mounting base has a flip-up cover plate at its top, which covers the top of the groove. The cover plate has vertically downward-extending pressure blocks corresponding to each groove position. After the cover plate is installed on the top of the mounting base, the bottom of the pressure blocks can abut against the top of the sheath. This structure ensures the sheath is securely fitted, further guaranteeing detection accuracy.
[0013] Preferably, all the grooves are the same size. Using this structure, multiple sheaths of the same model can be placed simultaneously, accelerating the testing speed of sheaths of the same model.
[0014] Preferably, the base includes an upper base and a lower base, the lower base being fixedly mounted on the top of the base, and the upper base being detachably mounted on the top of the lower base. This structure facilitates the replacement of the upper base with different grooves.
[0015] Preferably, a resistance positioning device is provided between the mounting base and the base. This device includes a roller, a resistance positioning block, and a lifting seat. The lifting seat is slidably mounted on the upper base via an elastic component. The roller is rotatably mounted on the lifting seat. The resistance positioning block is fixedly mounted on the bottom of the mounting base. The bottom of the resistance positioning block has multiple upwardly recessed arc-shaped grooves, each corresponding to one of the first positioning holes. With this structure, by sliding the mounting base to the arc-shaped grooves, the elastic component causes the roller to rise, facilitating rapid positioning between the lifting cylinder and the first positioning hole.
[0016] Preferably, the lower base has a second positioning hole at its top, and the upper base has a positioning pin extending downwards from its bottom; the positioning pin is used to pass through the second positioning hole. This structure facilitates rapid positioning of the upper base.
[0017] Preferably, the upper base is provided with a locking component, which connects the upper base and the lower base into one unit. This structure ensures a stable connection between the upper and lower bases, preventing the upper base from wobbling and causing deviations in the detection position.
[0018] Preferably, the testing mechanism is a photographic testing device or a depth sensing device. Using this structure, the installation quality of each sheath can be tested efficiently and accurately.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. The universal testing fixture provided by this utility model uses grooves of various sizes formed on the top of the mounting base. When it is necessary to test a sheath of a corresponding size, simply slide the mounting base and align the groove of the corresponding size with the testing mechanism. This is very convenient and quick. In addition, the grooves of various sizes also increase the application scenarios of the testing mechanism and reduce production input costs.
[0021] 2. Through the design of the lifting cylinder and each first positioning hole, each groove can be accurately stopped in the correct position of the detection mechanism, ensuring the detection accuracy of the detection mechanism.
[0022] 3. The dimensions of each groove can also be set to the same size, which greatly speeds up the inspection efficiency of sheaths of the same size.
[0023] 4. The base adopts a detachable structure, and the upper and lower bases are only fixedly connected by locking components. Compared with disassembling and replacing the mounting base, it is more convenient and faster to disassemble the upper base. Attached Figure Description
[0024] Figure 1 is a schematic diagram of the structure of the universal testing fixture;
[0025] Figure 2 is a schematic diagram showing the actual usage status of the general-purpose testing tooling;
[0026] Figure 3 is a structural schematic diagram of the lower base 4b;
[0027] Figure 4 is a structural schematic diagram of the upper base 4a;
[0028] Figure 5 is a schematic diagram of the bottom structure of the upper base 4a;
[0029] Figure 6 is a schematic diagram of the mounting base 3;
[0030] Figure 7 is a schematic diagram of the bottom structure of the mounting base 3;
[0031] Figure 8 is a structural schematic diagram showing the positional relationship between the lifting cylinder 7 and the roller 11a;
[0032] Figure 9 is a cross-sectional schematic diagram showing the resistance positioning device 11;
[0033] Figure 10 shows a partial schematic diagram of a second embodiment of the resistance positioning device 11. Detailed Implementation
[0034] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0035] As shown in Figures 1 and 2, a general-purpose testing fixture includes a base 1. A testing mechanism 2 and a sheath mounting assembly A are arranged on the top of the base 1 facing each other. A mounting seat 3 is slidably mounted on the sheath mounting assembly A. The sliding direction of the mounting seat 3 is perpendicular to the direction in which the testing mechanism 2 and the sheath mounting assembly A are facing each other. Multiple grooves 3a are distributed on the top of the mounting seat 3 along its sliding direction. Each groove 3a is used to position and install sheaths 10 of different specifications. The sliding mounting seat 3 can make any groove 3a face the testing mechanism 2.
[0036] With this design, the various sizes of grooves 3a formed on the top of the mounting base 3 make it easy and quick to slide the mounting base 3 and align the grooves 3a of the corresponding size with the detection mechanism 2 when it is necessary to inspect the corresponding size of the sheath 10. In addition, the various sizes of grooves 3a also increase the application scenarios of the detection mechanism 2 and reduce production input costs.
[0037] In this embodiment, each groove 3a can also be set to the same size. In this case, multiple sheaths 10 of the same model can be placed on the mounting base 3, which greatly speeds up the detection efficiency of sheaths 10 of the same size.
[0038] In this embodiment, the detection mechanism 2 can be a photo detection device or a depth sensing device. Since both are relatively mature existing technologies, their specific structures and principles will not be described in detail in this embodiment. Through the detection mechanism 2, the detection accuracy of the sheath 10 can be guaranteed, ensuring that the sheath 10 is installed in place.
[0039] As shown in Figures 1 and 4, the sheath mounting assembly A also includes a base 4, which is fixedly mounted on the top of the mounting base 1. Two parallel slide rails 5 are fixedly mounted on the top of the base 4, and a slider 6 is slidably mounted on the slide rails 5. The mounting seat 3 is fixedly mounted on the top of the slider 6. This design enables the stable directional sliding of the mounting seat 3.
[0040] As shown in Figures 4 and 7, limit blocks 12 are fixedly installed at both ends of the top of the base 4 corresponding to the sliding direction of the mounting seat 3, and two limit blocks 13 are fixedly installed at the bottom of the mounting seat 3. The two limit blocks 13 are positioned between the two limit blocks 12. Through the mutual cooperation between the limit blocks 12 and the limit blocks 13, the sliding stroke of the mounting seat 3 can be further limited, preventing the slider 6 from hitting the base 4 and affecting the service life of the slider 6.
[0041] Furthermore, as shown in Figures 3 to 5, the base 4 comprises an upper base 4a and a lower base 4b. The lower base 4b is fixedly installed on the top of the base 1, and the upper base 4a is detachably installed on the top of the lower base 4b. The mounting seat 3 is slidably installed on the top of the upper base 4a. In this embodiment, the top of the mounting seat 3 is formed with two rows of parallel grooves 3a. By rotating the upper base 4a horizontally by 180° and reinstalling it on the lower base 4b, the grooves 3a that were originally away from the detection mechanism 2 can be aligned with the detection mechanism 2, further increasing the application scenarios of the detection mechanism 2.
[0042] To facilitate the disassembly of the upper base 4a by the operator, in this embodiment, handles 8 are fixedly installed at both ends of the upper base 4a corresponding to the sliding direction of the mounting seat 3, as shown in Figures 1 and 4.
[0043] As shown in Figures 3 and 5, a second positioning hole 4b1 is formed in the lower base 4b, and a positioning pin 4a1 extends downward from the bottom of the upper base 4a. The positioning pin 4a1 is used to pass through the second positioning hole 4b1. This design can facilitate the quick positioning and installation of the upper base 4a on the lower base 4b, and at the same time can avoid the installation deviation of the upper base 4a, which would affect the detection results of the detection mechanism 2.
[0044] As shown in Figure 4, two sets of locking components 9 are provided on the upper base 4a. The locking components 9 are used to fix the upper base 4a and the lower base 4b together as one unit, preventing the upper base 4a from shaking and affecting the detection accuracy of the detection mechanism 2. In addition, the locking components 9 make it easier to disassemble the upper base 4a. In this embodiment, the locking components 9 are quick-locking devices. In addition, they can also be fixed by means of buckles, bolts, etc.
[0045] As shown in Figures 1 and 6, the bottom of the mounting base 3 has an extension 3b extending toward the direction of the detection mechanism 2. Four first positioning holes 3c are distributed on the extension 3b, and each first positioning hole 3c is corresponding to each groove 3a. A lifting cylinder 7 is also fixedly installed on the base 1. The installation position of the lifting cylinder 7 is directly opposite to the detection mechanism 2. By sliding the mounting base 3, the cylinder rod end of the lifting cylinder 7 can pass through each first positioning hole 3c, thereby facilitating the direct alignment of each groove 3a with the detection mechanism 2 and ensuring the detection accuracy of the detection mechanism 2 on the sheath 10 in each groove 3a.
[0046] As shown in Figures 4, 7, 8, and 9, a resistance positioning device 11 is also provided between the mounting base 3 and the base 4. The resistance positioning device 11 includes a roller 11a, a resistance positioning block 11b, and a lifting seat 11c. The lifting seat 11c is slidably mounted on the upper base 4a via an elastic member 11d. The roller 11a is rotatably mounted on the lifting seat 11c. The resistance positioning block 11b is fixed to the bottom of the mounting base 3. The bottom of the resistance positioning block 11b is formed with four upwardly recessed arc-shaped grooves 11e. The four arc-shaped grooves 11e are correspondingly arranged with the four first positioning holes 3c. During the sliding process of the mounting base 3, the upward pushing force applied by the elastic member 11d to the lifting seat 11c can push the roller 11a upward into each arc-shaped groove 11e. When the roller 11a moves into the arc-shaped groove 11e, the first positioning hole 3c and the lifting cylinder 7 can be quickly positioned. In this embodiment, the elastic member 11d is a gas spring or a compression spring.
[0047] As shown in Figure 10, a rotatable electric turntable 11f is installed on the upper base 4a. The lifting seat 11c is slidably mounted on the electric turntable 11f via the guide rod a. When the mounting seat 3 slides to the groove 3a and is directly opposite the detection mechanism 2 (detection position), the electric turntable 11f drives the lifting seat 11c to rotate horizontally by 90°, allowing the roller 11 to rotate 90° within the arc-shaped groove 11e. At this time, a locking structure is formed between the roller 11 and the arc-shaped groove 11e, which can generate a large sliding resistance on the mounting seat 3. Based on this, the limiting structure formed between the first positioning hole 3c and the lifting cylinder 7 mentioned above can be omitted, thereby optimizing the compactness of the tooling.
[0048] As shown in Figure 6, a cover plate 3d is flipped up on the top of the mounting base 3. The cover plate 3d is used to cover the top of the groove 3a. Vertically downward extending pressure blocks 3e are formed on the cover plate 3d at the positions corresponding to each groove 3a. After the cover plate 3d is installed on the top of the mounting base 3, the bottom of the pressure blocks 3e can abut against the top of the sheath 10. With this design, the cover plate 3d and the pressure blocks 3e can stably lock the sheath 10 inside the groove 3a, further ensuring the detection accuracy of the detection mechanism 2. In this embodiment, the cover plate 3d and the pressure blocks 3e are only suitable for sheaths 10 with smaller dimensions, that is, sheaths 10 can be completely locked inside the groove 3a, and are not suitable for sheaths 10 with dimensions greater than the depth of the groove 3a.
[0049] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.
Claims
1. A universal testing fixture, comprising a base (1), wherein the top of the base (1) is provided with a testing mechanism (2) and a sheath mounting assembly (A) arranged facing each other, characterized in that: The sheath mounting assembly (A) is slidably mounted with a mounting base (3). The sliding direction of the mounting base (3) is perpendicular to the direction of the detection mechanism (2) and the sheath mounting assembly (A). The top of the mounting base (3) has a plurality of grooves (3a) distributed along its sliding direction. Each groove (3a) is used to position and install sheaths of different specifications. By sliding the mounting base (3), any groove (3a) can be aligned with the detection mechanism (2).
2. The universal inspection fixture of claim 1, wherein: The sheath mounting assembly (A) also includes a base (4), the top of which is provided with two parallel slide rails (5), a slider (6) is slidably mounted on the slide rails (5), and the mounting seat (3) is fixedly mounted on the top of the slider (6).
3. The universal testing fixture according to claim 2, characterized in that: The mounting base (3) has an extension (3b) extending toward the detection mechanism (2) at its bottom. The extension (3b) has first positioning holes (3c) distributed on it. The first positioning holes (3c) are arranged in correspondence with each groove (3a). The base (1) is provided with a lifting cylinder (7). The lifting cylinder (7) is arranged opposite to the detection mechanism (2). When the mounting base (3) is slid, the cylinder rod end of the lifting cylinder (7) can pass through each of the first positioning holes (3c).
4. The universal testing fixture according to claim 1, characterized in that: The mounting base (3) has a flip-up cover plate (3d) on the top. The cover plate (3d) is used to cover the top of the groove (3a). The cover plate (3d) has a vertically downward extending pressure block (3e) corresponding to each of the grooves (3a). After the cover plate (3d) is installed on the top of the mounting base (3), the bottom of the pressure block (3e) can abut against the top of the cover.
5. The universal inspection fixture of claim 1, wherein: Each of the grooves (3a) has the same size.
6. The universal inspection fixture of claim 3, wherein: The base (4) includes an upper base (4a) and a lower base (4b). The lower base (4b) is fixedly disposed on the top of the base (1), and the upper base (4a) is detachably disposed on the top of the lower base (4b).
7. The universal testing fixture according to claim 6, characterized in that: A resistance positioning device (11) is provided between the mounting base (3) and the base (4). The resistance positioning device (11) includes a roller (11a), a resistance positioning block (11b), and a lifting seat (11c). The lifting seat (11c) is slidably mounted on the upper base (4a) through an elastic component (11d). The roller (11a) is rotatably mounted on the lifting seat (11c). The resistance positioning block (11b) is fixedly mounted on the bottom of the mounting base (3). The bottom of the resistance positioning block (11b) is provided with a plurality of upwardly recessed arc-shaped grooves (11e). Each arc-shaped groove (11e) corresponds to each of the first positioning holes (3c).
8. The universal testing fixture according to claim 6, characterized in that: The lower base (4b) has a second positioning hole (4b1) at its top, and the upper base (4a) has a positioning pin (4a1) extending downward from its bottom. The positioning pin (4a1) is used to pass through the second positioning hole (4b1).
9. The universal testing fixture according to claim 6, characterized in that: The upper base (4a) is provided with a locking component (9), which is used to connect the upper base (4a) and the lower base (4b) into one unit.
10. The universal inspection fixture of claim 1, wherein: The testing agency (2) is a photographic testing device or a depth sensing device.