An instrument for testing the tensile strength of wire harnesses

Abstract

This invention discloses a wire harness tensile strength tester, comprising a fixed frame with a testing mechanism inside. The testing mechanism includes a vertical plate fixedly disposed inside the fixed frame, a movable plate inside the fixed frame, a rack fixedly disposed at the bottom of the movable plate, and a motor fixedly disposed at the rear of the fixed frame. Through the design of the testing mechanism, this invention allows for the stretching of the wire harness. After stretching, the wire harness can be observed. If the wire harness is damaged, it indicates that the wire harness is unqualified. Through the design of springs and other structures, after the wire harness is tested, the spring will drive the movable plate to return the baffle to its original position, ensuring that the distance between the baffle and the vertical plate is the same when testing the next wire harness. This results in the same testing force for each wire harness, meaning that the evaluation standard for the wire harness is the same, preventing unqualified wire harnesses from entering the market and protecting the factory's interests.

Description

Technical Field

[0001] This invention relates to the field of wire harness testing, and in particular to a tester for the tensile strength of wire harnesses. Background Technology

[0002] A wire harness is a general unit of service equipment for a certain load source group, such as trunk lines, switching devices, control systems, etc. The basic research content of traffic theory is to study the relationship between traffic volume, call loss and wire harness capacity. Therefore, wire harness is an important basic concept in traffic theory. Before the wire harness leaves the factory, the tensile strength of the wire harness needs to be tested.

[0003] However, in the current technology, most wire harnesses are subjected to simple manual stretching tests after production. Due to the different arm strengths of workers, the evaluation standards for wire harnesses are also different, resulting in a large number of unqualified wire harnesses flowing into the market, causing many unnecessary economic losses to the factory and making it inconvenient for the factory to use.

[0004] Therefore, based on the above-mentioned technical problems, it is necessary for those skilled in the art to develop a wire harness tensile strength tester. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a tester for the tensile strength of wire harnesses.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] A wire harness tensile strength tester includes a fixed frame, and a testing mechanism is provided inside the fixed frame;

[0008] The detection mechanism includes a vertical plate fixed inside a fixed frame. A movable plate is located inside the fixed frame. A rack is fixedly mounted at the bottom of the movable plate. A motor is fixedly mounted at the rear of the fixed frame. A rotating rod is fixedly connected to the motor via an output shaft. The rotating rod is located at the rear of the fixed frame and passes through the fixed frame, extending into the interior of the fixed frame. A gear is fixedly mounted outside the rotating rod. The gear is located at the bottom of the rack and meshes with the rack. A baffle is fixedly mounted on one side of the movable plate. Auxiliary components are provided on both the baffle and one side of the vertical plate. A spring is fixedly mounted on the other side of the movable plate, with one end of the spring fixedly connected to one side of the vertical plate.

[0009] The auxiliary component includes a cavity, which is formed on a vertical plate and extends through the vertical plate. A horizontal plate is provided inside the cavity. A rubber pad is fixedly provided at the bottom of the horizontal plate, and a moving rod is fixedly provided at the top of the horizontal plate. A slider is fixedly provided on one side of the moving rod. The slider is located inside the cavity and extends out of the cavity. A threaded plate is fixedly provided on one side of the slider. A threaded rod is provided inside the threaded plate, and the threaded rod is connected to the threaded plate by threads.

[0010] Preferably, a fixing plate is fixedly provided on one side of the vertical plate, the fixing plate is located on one side of the cavity, and the bottom of the threaded rod is connected to the top of the fixing plate through a bearing.

[0011] Preferably, a handle is fixedly provided at the top of the threaded rod.

[0012] Preferably, a support plate is fixedly provided on the rear side of the fixed frame, and the top of the support plate is fixedly connected to the bottom of the motor.

[0013] Preferably, the top of the fixing frame is provided with a sliding groove.

[0014] Preferably, a connecting block is fixedly provided on the top of the movable plate, and the connecting block is located inside the slide groove.

[0015] The above technical solution has the following beneficial effects:

[0016] The testing mechanism is designed to stretch the wire harness. After stretching, the harness can be observed. If the harness is damaged, it is considered unqualified; if it is undamaged, it is considered qualified. Through the design of springs and other structures, after the test, the springs will move the baffle back to its original position via the moving plate. This ensures that the distance between the baffle and the vertical plate is the same when testing the next wire harness, thus ensuring that the testing force is the same for each wire harness. This means that the evaluation criteria for the wire harness are the same, preventing unqualified wire harnesses from entering the market and protecting the factory's interests. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 A schematic diagram of the overall structure of a wire harness tensile strength tester provided by the present invention;

[0020] Figure 2A cross-sectional view of the fixing plate of a wire harness tensile strength tester provided by the present invention;

[0021] Figure 3 This is a top view of a wire harness tensile strength testing instrument provided by the present invention.

[0022] In the diagram: 1. Fixed frame, 2. Vertical plate, 3. Moving plate, 4. Rack, 5. Motor, 6. Rotating rod, 7. Gear, 8. Baffle, 9. Spring, 10. Cavity, 11. Horizontal plate, 12. Rubber pad, 13. Moving rod, 14. Slider, 15. Threaded plate, 16. Threaded rod, 17. Fixed plate, 18. Handle, 19. Support plate, 20. Slide groove, 21. Connecting block. Detailed Implementation

[0023] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] See Figure 1-3 As shown, a wire harness tensile strength tester of the present invention includes a fixed frame 1, and a testing mechanism is provided inside the fixed frame 1.

[0025] The detection mechanism includes a vertical plate 2, which is fixedly installed inside a fixed frame 1. A movable plate 3 is installed inside the fixed frame 1. A rack 4 is fixedly installed at the bottom of the movable plate 3. A motor 5 is fixedly installed at the rear of the fixed frame 1. A rotating rod 6 is fixedly connected to the motor 5 through an output shaft. The rotating rod 6 is located at the rear of the fixed frame 1 and passes through the fixed frame 1. The rotating rod 6 extends into the interior of the fixed frame 1. A gear 7 is fixedly installed outside the rotating rod 6. The gear 7 is located at the bottom of the rack 4 and meshes with the rack 4. A baffle 8 is fixedly installed on one side of the movable plate 3. Both the baffle 8 and one side of the vertical plate 2 are provided with auxiliary components. A spring 9 is fixedly installed on the other side of the movable plate 3. One end of the spring 9 is fixedly connected to one side of the vertical plate 2.

[0026] The auxiliary component includes a cavity 10, which is formed on the vertical plate 2 and extends through the vertical plate 2. A horizontal plate 11 is provided inside the cavity 10. A rubber pad 12 is fixedly provided at the bottom of the horizontal plate 11, and a moving rod 13 is fixedly provided at the top of the horizontal plate 11. A slider 14 is fixedly provided on one side of the moving rod 13. The slider 14 is located inside the cavity 10 and extends out of one side of the cavity 10. A threaded plate 15 is fixedly provided on one side of the slider 14. A threaded rod 16 is provided inside the threaded plate 15, and the threaded rod 16 is connected to the threaded plate 15 by threads.

[0027] Preferably, a fixing plate 17 is fixedly provided on one side of the vertical plate 2. The fixing plate 17 is located on one side of the cavity 10. The bottom of the threaded rod 16 is connected to the top of the fixing plate 17 through a bearing, which facilitates the rotation of the threaded rod 16.

[0028] Preferably, a handle 18 is fixedly provided on the top of the threaded rod 16 to facilitate the rotation of the threaded rod 16.

[0029] Preferably, a support plate 19 is fixedly provided on the rear side of the fixed frame 1, and the top of the support plate 19 is fixedly connected to the bottom of the motor 5 to facilitate support of the motor 5.

[0030] Preferably, the top of the fixed frame 1 is provided with a sliding groove 20.

[0031] Preferably, a connecting block 21 is fixedly provided on the top of the movable plate 3. The connecting block 21 is located inside the slide groove 20 to facilitate the limiting of the movable plate 3.

[0032] Working principle:

[0033] First, the present invention is connected to an external power source. Then, one end of the wire harness is placed inside the cavity 10 of the vertical plate 2. Next, the handle 18 is rotated. The rotation of the handle 18 causes the threaded rod 16 to rotate. Since the threaded rod 16 is connected to the threaded plate 15 by threads, the rotation of the threaded rod 16 causes the threaded plate 15 to move downward. The downward movement of the threaded plate 15 causes the slider 14 and the moving rod 13 to move downward. The downward movement of the moving rod 13 causes the horizontal plate 11 and the rubber pad 12 at the bottom of the horizontal plate 11 to move downward. The horizontal plate 11 and the rubber pad 12 fix one end of the wire harness. Then, the other end of the wire harness is placed into the cavity 10 on the baffle 8. Following the same working principle, this fixes the other end of the wire harness. When fixing the wire harness, it can be kept relatively loose; it does not need to be completely taut. Then, the motor 5 is started. The motor 5 drives the rotating rod 6 to rotate, which in turn drives the gear 7 to rotate. Because the gear 7 meshes with the rack 4, the rotation of the gear 7 causes the rack 4 to move to the left. The leftward movement of the rack 4 causes the moving plate 3 to move to the left, and the leftward movement of the moving plate 3... The moving baffle 8 moves to the left, which moves the wire harness fixed on it, thus stretching it. Simultaneously, the connecting block 21 moves inside the slide groove 20 as the moving plate 3 moves to the left. When the connecting block 21 moves to one side of the slide groove 20, the motor 5 stops rotating. The leftward movement of the moving plate 3 also stretches the spring 9 on the other side. After the motor 5 stops, the spring 9, without tension, pulls the moving plate 3 to the right, facilitating the inspection of the next wire harness. This is then processed by the inspection machine. The design allows for stretching of the wire harness. After stretching, the wire harness can be observed. If the wire harness is damaged, it is considered unqualified; if it is undamaged, it is considered qualified. Through the design of the spring 9 and other structures, after the wire harness is inspected, the spring 9 will drive the baffle 8 back to its original position via the moving plate 3. This ensures that the distance between the baffle 8 and the vertical plate 2 is the same when inspecting the next wire harness, thus ensuring that the inspection force is the same for each wire harness. In other words, the evaluation standard for the wire harness is the same, preventing unqualified wire harnesses from entering the market and protecting the factory's interests.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A wire harness tensile strength testing instrument, comprising a fixed frame (1), characterized in that: The fixed frame (1) is equipped with a detection mechanism inside; The detection mechanism includes a vertical plate (2), which is fixed inside a fixed frame (1). A movable plate (3) is provided inside the fixed frame (1). A rack (4) is fixed at the bottom of the movable plate (3). A motor (5) is fixed at the rear of the fixed frame (1). A rotating rod (6) is fixedly connected to the motor (5) through an output shaft. The rotating rod (6) is located at the rear of the fixed frame (1) and passes through the fixed frame (1). The rotating rod (6) extends into the interior of the fixed frame (1). A gear (7) is fixedly provided outside the rotating rod (6). The gear (7) is located at the bottom of the rack (4) and meshes with the rack (4). A baffle (8) is fixedly provided on one side of the movable plate (3). Auxiliary components are provided on both the baffle (8) and one side of the vertical plate (2). A spring (9) is fixedly provided on the other side of the movable plate (3). One end of the spring (9) is fixedly connected to one side of the vertical plate (2). The auxiliary component includes a cavity (10), which is opened on the vertical plate (2) and penetrates the vertical plate (2). A horizontal plate (11) is provided inside the cavity (10). A rubber pad (12) is fixedly provided at the bottom of the horizontal plate (11). A moving rod (13) is fixedly provided at the top of the horizontal plate (11). A slider (14) is fixedly provided on one side of the moving rod (13). The slider (14) is located inside the cavity (10) and extends out of one side of the cavity (10). A threaded plate (15) is fixedly provided on one side of the slider (14). A threaded rod (16) is provided inside the threaded plate (15). The threaded rod (16) is connected to the threaded plate (15) by a thread. A fixing plate (17) is fixedly provided on one side of the vertical plate (2). The fixing plate (17) is located on one side of the cavity (10). The bottom of the threaded rod (16) is connected to the top of the fixing plate (17) by a bearing. The top of the fixed frame (1) is provided with a sliding groove (20); The top of the movable plate (3) is fixedly provided with a connecting block (21), which is located inside the slide groove (20).

2. The wire harness tensile strength testing instrument according to claim 1, characterized in that: A handle (18) is fixedly provided on the top of the threaded rod (16).

3. The wire harness tensile strength testing instrument according to claim 1, characterized in that: A support plate (19) is fixedly provided on the rear side of the fixed frame (1), and the top of the support plate (19) is fixedly connected to the bottom of the motor (5).

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