Stable wire harness TDR testing device

Abstract

The utility model relates to the technical field of cable detection, in particular to a stable wire harness TDR testing device which comprises a detector body and a clamping device, supporting blocks are arranged at four corners of the bottom end of the detector body, a display screen is arranged on the front end face of the detector body, a testing block is arranged on the back side of the top end of the detector body, and the clamping device is arranged on the top end of the detector body. A plurality of test ports are evenly arranged on the front end face of the test block, a cable penetrates through the V-shaped groove to be connected with the test ports, then the bidirectional screw is driven reversely, the bidirectional screw drives the two sets of sliding blocks to get close to the middle under the rotation effect, the two sets of clamping plates clamp the cable till the V-shaped groove makes contact with the side wall of the cable, and then the cable is clamped by the two sets of clamping plates. According to the clamping device, clamping and fixing of a cable are achieved, static electricity generated by floating of a test wire is avoided, the test result is prevented from being influenced, the clamping plate is adjustable, workers can conveniently clean the interior of the V-shaped groove at regular time, the cleanliness degree of the clamping device is improved, and foreign matter is prevented from influencing the test result.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection, in particular to a stable wire harness TDR testing device. Background Art

[0002] As we all know, TDR, or time domain reflectometry, was mainly used in the communications industry in the early days to detect the breakpoints of communications cables, so it is also called a "cable detector". TDR sends a pulse or step signal to the transmission path. When the impedance changes in the transmission path, part of the energy will be reflected and the remaining energy will continue to be transmitted. As long as the amplitude of the transmitted wave is known and the amplitude of the reflected wave is measured, the impedance change can be calculated.

[0003] In the actual use environment of the existing TDR test device, a clamping device is provided in the TDR test device to fix the cable. After long-term use, dust is easily accumulated in the clamping device, which is inconvenient to clean, thereby affecting the detection effect after the cable is clamped. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a stable wire harness TDR testing device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable wire harness TDR test device, comprising a detector body and a clamping device, wherein support blocks are arranged at the four corners of the bottom end of the detector body, a display screen is arranged on the front end face of the detector body, a test block is arranged on the back side of the top end of the detector body, and a plurality of test ports are evenly arranged on the front end face of the test block, a left fixed block and a right fixed block are respectively arranged on the left and right sides of the top end of the detector body, a rectangular groove is provided on the side of the right fixed block close to the left fixed block, the clamping device comprises a bidirectional screw, the bidirectional screw is arranged in the rectangular groove, sliders are threadedly arranged at the upper and lower ends of the bidirectional screw, a clamping plate is fixedly connected to the side of the slider away from the rectangular groove, and a V-shaped groove is provided on the side where the two groups of clamping plates face each other.

[0006] In order to prevent the cable from being deviated, the utility model is improved in that a V-shaped plate is arranged in the V-shaped groove, and a spring is arranged between the V-shaped plate and the V-shaped groove.

[0007] In order to facilitate the control of the rotation of the screw, the utility model is improved in that a first bevel gear is provided at the top of the bidirectional screw, one side of the first bevel gear is meshingly connected with a second bevel gear, and one side of the second bevel gear is provided with a rotating shaft passing through the side wall of the right fixed block.

[0008] In order to guide the movement of the clamping plate, the utility model has an improvement in that a groove is provided on the side wall of the left fixed block close to the right fixed block, a guide rod is provided in the groove, and a sleeve is fixedly connected to the left side of the two groups of clamping plates, and the sleeve is slidably connected to the guide rod.

[0009] In order to prevent static electricity, the utility model is improved in that an antistatic film is arranged on the inner wall of the V-shaped plate.

[0010] In order to facilitate the control of the operating status of the test port, the utility model is improved in that a switch is arranged on the right side of the display screen.

[0011] In order to facilitate the rotation of the rotating shaft, the utility model is improved in that a hand-cranked wheel is arranged at the end of the rotating shaft.

[0012] In order to improve the anti-skid effect of the hand-cranked wheel, the utility model is improved in that anti-skid patterns are arranged on the hand-cranked wheel.

[0013] Compared with the prior art, the utility model provides a stable wire harness TDR test device, which has the following beneficial effects:

[0014] The stable wire harness TDR test device uses a clamping device, a hand wheel drives a rotating shaft, the rotating shaft drives a second bevel gear, the second bevel gear drives a first bevel gear, and the first bevel gear drives a bidirectional screw, so that the slider drives the clamping plate to clamp, and the spring is compressed under the action of clamping, and the spring has a fixing effect on the cable in a compressed state to prevent deviation, and the clamping plate can be adjusted up and down, which is convenient for staff to regularly clean the V-groove and the clamping plate, improve the cleanliness of the clamping device, prevent foreign matter from affecting the test results, and maintain the stability of the cable during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0017] Figure 3 This is a schematic diagram of the half-cut three-dimensional structure of the detector body of the utility model;

[0018] Figure 4 For the utility model Figure 3 An enlarged structural diagram of local A.

[0019] In the figure: 1. detector body; 2. support block; 3. display screen; 4. test block; 5. test port; 6. left fixed block; 7. right fixed block; 8. rectangular groove; 9. bidirectional screw; 10. slider; 11. clamping plate; 12. V-shaped groove; 13. V-shaped plate; 14. spring; 15. first bevel gear; 16. second bevel gear; 17. rotating shaft; 18. groove; 19. guide rod; 20. sleeve; 21. switch; 22. hand wheel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 A stable wire harness TDR test device comprises a detector body 1 and a clamping device, wherein the bottom four corners of the detector body 1 are provided with support blocks 2, the front end surface of the detector body 1 is provided with a display screen 3, the top back side of the detector body 1 is provided with a test block 4, the front end surface of the test block 4 is evenly arranged with a plurality of test ports 5, the left and right sides of the top of the detector body 1 are respectively provided with a left fixed block 6 and a right fixed block 7, the right fixed block 7 is provided with a rectangular groove 8 on a side close to the left fixed block 6, the clamping device comprises a bidirectional screw 9, the bidirectional screw 9 is provided in the rectangular groove 8, the upper and lower ends of the bidirectional screw 9 are threaded with sliders 10, the slider 10 is fixedly connected with a clamping plate 11 on a side away from the rectangular groove 8, and the two groups of the clamping A V-shaped groove 12 is provided on one side of the holding plate 11. In the present embodiment, the bidirectional screw 9 is firstly rotated so that the bidirectional screw 9 drives the sliders 10 at both ends to move toward both ends during the rotation, so that the two groups of sliders 10 drive the clamping plates 11 away from each other, and then the cable is passed through the V-shaped groove 12 to be connected to the test port 5, and then the bidirectional screw 9 is reversely driven. The bidirectional screw 9 drives the two groups of sliders 10 to move toward the middle under the action of rotation, so that the two groups of clamping plates 11 clamp the cable until the V-shaped groove 12 contacts the side wall of the cable, thereby clamping and fixing the cable, avoiding static electricity generated by the floating of the test line and affecting the test results. The adjustable clamping plate 11 is convenient for the staff to regularly clean the V-shaped groove 12, improve the cleanliness of the clamping device, and prevent foreign matter from affecting the test results.

[0022] In actual use, in order to further prevent the cable from being deviated, in the present embodiment, a V-shaped plate 13 is provided in the V-shaped groove 12, and a spring 14 is provided between the V-shaped plate 13 and the V-shaped groove 12. When the clamping plate 11 moves toward the cable and makes the V-shaped plate 13 contact the outer wall of the cable, the spring 14 is compressed under the action of clamping. The spring 14 fixes the cable in the compressed state to prevent the cable from being deviated.

[0023] In actual use, in order to facilitate the control of the rotation of the screw, in this embodiment, a first bevel gear 15 is provided at the top of the bidirectional screw 9, and one side of the first bevel gear 15 is meshingly connected with a second bevel gear 16, and one side of the second bevel gear 16 passes through the side wall of the right fixed block 7 and is provided with a rotating shaft 17. When it is necessary to control the rotation of the bidirectional screw 9, the rotating shaft 17 is manually rotated, and the rotating shaft 17 drives the second bevel gear 16, the second bevel gear 16 drives the first bevel gear 15, and the first bevel gear 15 drives the bidirectional screw 9, so that the rotation of the bidirectional screw 9 can be realized.

[0024] In actual use, the movement of the clamping plate 11 is further guided. In this embodiment, a groove 18 is provided on the side wall of the left fixed block 6 close to the right fixed block 7, and a guide rod 19 is provided in the groove 18. The left sides of the two groups of clamping plates 11 are fixedly connected with a sleeve 20, and the sleeve 20 is slidably connected to the guide rod 19. In the process of the clamping plate 11 moving up and down for clamping, the sleeve 20 is driven to slide on the guide rod 19, thereby guiding the movement of the clamping plate 11.

[0025] In actual use, in order to further prevent static electricity, in this embodiment, an antistatic film is provided on the inner wall of the V-shaped plate 13, and the antistatic film can reduce static interference and improve the accuracy of TDR testing.

[0026] In actual use, in order to further facilitate the control of the operating state of the test port 5 , in this embodiment, a switch 21 is provided on the right side of the display screen 3 , and the operating state of the test port 5 is conveniently controlled by the switch 21 .

[0027] In actual use, in order to further facilitate the rotation of the rotating shaft 17 , in this embodiment, a hand-cranked wheel 22 is provided at the end of the rotating shaft 17 , and the hand-cranked wheel 22 facilitates the control of the rotation of the rotating shaft 17 .

[0028] In actual use, in order to further improve the anti-skid effect of the hand-cranked wheel 22 , in this embodiment, the hand-cranked wheel 22 is provided with anti-skid patterns, and the protective patterns increase the friction of the outer wall of the hand-cranked wheel 22 , thereby improving the anti-skid effect of the hand-cranked wheel 22 .

[0029] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable wire harness TDR test device, comprising a detector body (1) and a clamping device, characterized in that: Support blocks (2) are arranged at the four corners of the bottom end of the detector body (1); a display screen (3) is arranged on the front end surface of the detector body (1); a test block (4) is arranged on the back side of the top end of the detector body (1); a plurality of test ports (5) are evenly arranged on the front end surface of the test block (4); a left fixed block (6) and a right fixed block (7) are arranged on the left and right sides of the top end of the detector body (1), respectively; a rectangular groove (8) is provided on the side of the right fixed block (7) close to the left fixed block (6); the clamping device comprises a bidirectional screw (9); the bidirectional screw (9) is arranged in the rectangular groove (8); sliders (10) are threadedly arranged at the upper and lower ends of the bidirectional screw (9); a clamping plate (11) is fixedly connected to the side of the slider (10) away from the rectangular groove (8); and V-shaped grooves (12) are provided on the opposite sides of the two groups of the clamping plates (11).

2. A stable wire harness TDR test device according to claim 1, characterized in that: A V-shaped plate (13) is arranged in the V-shaped groove (12), and a spring (14) is arranged between the V-shaped plate (13) and the V-shaped groove (12).

3. A stable wire harness TDR test device according to claim 2, characterized in that: A first bevel gear (15) is disposed at the top end of the bidirectional screw (9), one side of the first bevel gear (15) is meshingly connected with a second bevel gear (16), and one side of the second bevel gear (16) is provided with a rotating shaft (17) penetrating through the side wall of the right fixing block (7).

4. A stable wire harness TDR test device according to claim 3, characterized in that: A groove (18) is provided on a side wall of the left fixing block (6) close to the right fixing block (7), a guide rod (19) is arranged in the groove (18), and sleeves (20) are fixedly connected to the left sides of the two groups of clamping plates (11), and the sleeves (20) are slidably connected to the guide rod (19).

5. A stable wire harness TDR test device according to claim 4, characterized in that: An antistatic film is provided on the inner wall of the V-shaped plate (13).

6. A stable wire harness TDR test device according to claim 5, characterized in that: A switch (21) is provided on the right side of the display screen (3).

7. A stable wire harness TDR test device according to claim 6, characterized in that: A hand-cranked wheel (22) is provided at the end of the rotating shaft (17).

8. A stable wire harness TDR testing device according to claim 7, characterized in that: The hand-cranked wheel (22) is provided with anti-slip grooves.

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