Cable wire harness terminal connection strength detection device

Abstract

The invention provides a cable harness terminal connection strength detection device, and relates to the field of wiring terminal detection. The cable harness terminal connection strength detection device comprises a bottom plate, a terminal fixing mechanism used for fixing a wiring terminal is slidably connected above the bottom plate, and a cable fixing mechanism used for fixing a cable is arranged above the bottom plate. According to the cable harness terminal connection strength detection device, a terminal after wiring is completed is placed between the pressing frame and the pressing plate, the terminal can be extruded by rotating the threaded pressing rod, and the position of the sliding block is changed by rotating the lead shaft, so that the pressing cover is close to the connection position of the terminal and the cable as much as possible to fix the cable; the transverse moving unit continues to move to test the connection strength between the terminal and the cable, the connection strength is not met if the terminal is broken before a specified reading, and the wiring terminals of different sizes can be adapted under the condition that the number of the cables participating in detection is reduced through the arrangement.

Description

Technical Field

[0001] The invention relates to the field of wiring terminal detection, in particular to a cable harness terminal connection strength detection device. Background Art

[0002] Cable terminals are connectors used to connect cables to electrical equipment, other cables or conductors, and play a key role in transmitting electrical signals and electrical energy.

[0003] The loose connection between the terminal and the cable will increase the contact resistance. When the current passes through, too much heat will be generated at the loose connection, causing the local temperature to rise. Excessive temperature will not only accelerate the aging of the terminal and cable insulation layer, but in serious cases it may also cause a fire, endangering the safety of people and property. Due to the increase in resistance at the loose connection, the voltage drop at this part will increase significantly, making the actual voltage obtained by the connected electrical equipment lower than the normal working voltage, affecting the normal operation of the equipment. At the loose connection, when the circuit is connected or disconnected, arcs are easily generated due to poor contact.

[0004] The existing patent (CN118980584A) is a pull-out strength testing device for a wiring harness terminal connection, which relates to the technical field of pull-out force testing of wiring harness terminals, including a tester and a wiring harness and a terminal inside the tester, wherein the terminal is buckled at one end of the wiring harness, and a placement bin for placing the wiring harness and the terminal is provided at the bottom of the tester, and a test bin is provided on the tester to convert the tension exerted on the wiring harness into a vertical upward tension on the upper terminal. Under this force, the terminal is slightly moved downward by the tension of the wiring harness, and the test disk and the movable column where the terminal are located are slightly moved downward. The dynamometer where the test disk and the movable column are located measures the pull-out force at this time and displays it on the display screen on the dynamometer. When the pull-out force exceeds the limit of the bonding force of the connection between the wiring harness and the terminal, the wiring harness and the terminal are separated, and the pull-out force displayed by the dynamometer at this time is the maximum pull-out force that the wiring harness and the terminal can withstand.

[0005] This technical solution is suitable for testing the connection strength of factory wiring terminals. The connection strength test is also required after the on-site wiring terminals are connected. The test is carried out using the same principle. Cables are prone to breakage under the action of tension when stretched. Therefore, the length of the cables involved in the test should be reduced as much as possible. At the same time, the different sizes of terminals installed on site also need to be adapted. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a cable harness terminal connection strength detection device, which solves the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cable harness terminal connection strength detection device, comprising a base plate, a terminal fixing mechanism for fixing the wiring terminal is slidably connected above the base plate, a cable fixing mechanism for fixing the cable is arranged above the base plate, a lateral moving unit for pushing the terminal fixing mechanism away from the cable fixing mechanism is fixedly installed above the base plate, a tension detection mechanism is arranged between the cable fixing mechanism and the terminal fixing mechanism, the tension detection mechanism comprises a tension detector, a fixing ring is fixedly installed at the fixed end of the tension detector, the fixing ring is connected to the terminal fixing mechanism, a threaded shaft is fixedly installed at the detection end of the tension detector, a threaded sleeve is threadedly connected to the outer surface of the threaded shaft, a rotating ring is fixedly installed at one end of the threaded sleeve away from the threaded shaft, a universal joint is fixedly installed at one end of the rotating ring away from the threaded sleeve, a hook is fixedly installed at one end of the universal joint away from the rotating ring, and the hook is mounted on the outer surface of the cable fixing mechanism.

[0008] Preferably, the cable fixing mechanism comprises symmetrically arranged brackets, a lead shaft is rotatably connected between the two brackets, a sliding block that moves relative to the base plate is engaged on the outer side of the lead shaft, and a pressure cover that limits the relative stillness of the cable and the sliding block is arranged above the sliding block.

[0009] Preferably, the top end of the gland is threadedly connected to a threaded column, the bottom end of the threaded column is rotatably connected to a pressing block, and the pressing block extends to the inner ring of the gland.

[0010] Preferably, the terminal fixing mechanism includes a sliding platform, the free end of the transverse moving unit is fixedly connected to the sliding platform, a vertical moving unit is arranged above the sliding platform, a pressure frame is fixedly installed above the vertical moving unit, and a pressure plate is arranged inside the pressure frame to limit the relative stillness of the terminal and the pressure frame.

[0011] Preferably, both sides of the top of the pressing frame are vertically and downwardly threadedly connected with threaded pressing rods, the threaded pressing rods are located above the pressing plate, and the pressing plate is slidably connected to the pressing frame.

[0012] Preferably, a limiting groove is opened on the front side of the bottom end of the pressure plate, and the inner part of the limiting groove is slidably connected with a limiting block extending forward for limiting the terminal from the edge, and the middle part of the limiting groove is rotatably connected with a double-headed screw, and the spiral directions of the double-headed screw are opposite, and the two limiting blocks are respectively threadedly connected to the two ends of the double-headed screw.

[0013] The middle part of the pressing plate is threadedly connected with a fine-tuning screw rod, and the bottom end of the fine-tuning screw rod extends to the bottom of the pressing plate.

[0014] Preferably, limit rods are fixedly installed on both sides of the bottom end of the pressing frame, and the limit rods are slidably inserted into the interior of the sliding platform.

[0015] Preferably, the cross-sectional shape of the sliding block is "L"-shaped, the cross-sectional shape of the sliding platform is "J"-shaped, the lead shaft portion is located below the sliding platform, and the sliding block portion is located below the sliding platform.

[0016] Preferably, the gland is connected to the sliding block via a bolt threaded connection away from the hinged end, and there are two threaded columns, which are symmetrically arranged front to back.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The cable harness terminal connection strength detection device places the terminal with completed wiring between the pressure frame and the pressure plate, squeezes the terminal by rotating the threaded pressure rod, changes the position of the sliding block by rotating the lead shaft, makes the pressure cover as close as possible to the terminal and cable connection to fix the cable, fixes the cable by rotating the pressure block, changes the overall length of the threaded sleeve and the threaded shaft by rotating the threaded sleeve, connects the hook to the cable fixing mechanism, resets the tension detector by rotating the threaded sleeve, continues to move the connection strength between the test terminal and the cable by the lateral moving unit, and breaks before the specified reading indicates that the connection strength does not meet the requirements. Such a setting can ensure that terminals of different sizes can be adapted while reducing the number of cables involved in the detection.

[0019] 2. The cable harness terminal connection strength detection device, the terminal fixing mechanism includes a sliding platform, the free end of the lateral moving unit is fixedly connected to the sliding platform, and a vertical moving unit is arranged above the sliding platform. By setting the vertical moving unit, the terminal can be stretched upward, so that the effect of the terminal cable connection strength can be detected from different directions.

[0020] 3. The cable harness terminal connection strength detection device has a limit groove on the front side of the bottom end of the pressure plate, and the inner sliding connection of the limit groove is provided with a limit block extending forward for limiting the terminal from the edge, and the middle of the limit groove is rotatably connected with a double-headed screw, and the spiral directions of the double-headed screw are opposite. The two limit blocks are respectively threadedly connected to the two ends of the double-headed screw, and the distance between the two limit blocks can be adjusted by rotating the double-headed screw, so that the terminal can be limited from both sides, so that the terminal is evenly stressed during the lateral movement.

[0021] 4. The cable harness terminal connection strength detection device has an L-shaped cross-sectional shape for the sliding block, a "J"-shaped cross-sectional shape for the sliding platform, a lead shaft portion located below the sliding platform, and a sliding block portion located below the sliding platform. This arrangement can reduce the distance between the sliding block and the sliding platform, thereby reducing the length of the cable involved in the cable terminal detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cable fixing mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the gland connection of the present invention;

[0025] Figure 4 It is a schematic diagram of the tension detection mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the terminal fixing mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection of the pressing plate of the present invention;

[0028] Figure 7 This is a schematic diagram of the connection of the pressing blocks of the present invention;

[0029] Figure 8 It is a schematic diagram of the press frame connection of the present invention.

[0030] In the figure: 1, bottom plate; 2, terminal fixing mechanism; 3, cable fixing mechanism; 4, lateral moving unit; 5, tension detection mechanism; 6, vertical moving unit; 501, tension detector; 502, fixing ring; 503, threaded shaft; 504, threaded sleeve; 505, rotating ring; 506, universal joint; 507, hook; 301, bracket; 302, lead shaft; 303, sliding block; 304, pressure cover; 305, threaded column; 306, pressure block; 307, bolt; 201, sliding platform; 202, pressure frame; 203, pressure plate; 204, threaded pressure rod; 205, limit groove; 206, limit block; 207, double-headed screw; 208, fine-tuning screw; 209, limit rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] like Figure 1-6As shown, a cable harness terminal connection strength detection device comprises a base plate 1, a terminal fixing mechanism 2 for fixing a wiring terminal is slidably connected above the base plate 1, a cable fixing mechanism 3 for fixing a cable is arranged above the base plate 1, a lateral moving unit 4 for pushing the terminal fixing mechanism 2 away from the cable fixing mechanism 3 is fixedly installed above the base plate 1, a tension detection mechanism 5 is arranged between the cable fixing mechanism 3 and the terminal fixing mechanism 2, the tension detection mechanism 5 comprises a tension detector 501, and a fixed end of the tension detector 501 is fixedly installed A fixing ring 502 is connected to the terminal fixing mechanism 2, a threaded shaft 503 is fixedly installed on the detection end of the tension detector 501, a threaded sleeve 504 is threadedly connected to the outer surface of the threaded shaft 503, a rotating ring 505 is fixedly installed on the end of the threaded sleeve 504 away from the threaded shaft 503, a universal joint 506 is fixedly installed on the end of the rotating ring 505 away from the threaded sleeve 504, a hook 507 is fixedly installed on the end of the universal joint 506 away from the rotating ring 505, and the hook 507 is mounted on the outer surface of the cable fixing mechanism 3. When encountering terminals of different lengths, the terminal fixing mechanism 2 is driven by the lateral moving unit 4 to move and change the distance between the terminal fixing mechanism 2 and the cable fixing mechanism 3. The cable fixing mechanism 3 keeps fixing the cable from the root of the connection between the terminal and the cable. After the overall length of the threaded sleeve 504 and the threaded shaft 503 is changed by rotating the threaded sleeve 504, the hook 507 is connected to the cable fixing mechanism 3. The tension detector 501 is reset to zero by rotating the threaded sleeve 504, and the connection strength between the terminal and the cable is continued to be tested by the lateral moving unit 4. When the tension detector 501 does not break when the specified reading is obtained, it proves that the connection strength meets the standard.

[0036] In one embodiment, the cable fixing mechanism 3 includes symmetrically arranged brackets 301, and a lead shaft 302 is rotatably connected between the two brackets 301. The outer side of the lead shaft 302 is engaged with a sliding block 303 that moves relative to the base plate 1, and a pressure cover 304 is arranged above the sliding block 303 to limit the relative stillness of the cable and the sliding block 303. The position of the sliding block 303 can be changed by rotating the lead shaft 302, so that terminals of different lengths can be adapted by adjusting the cable fixing side. Through such a setting, it can be avoided that the lateral moving unit 4 has to adjust the gap and provide a tensile external force, thereby causing the problem of inaccurate gap adjustment.

[0037] In one embodiment, the top end of the gland 304 is threadedly connected to a threaded column 305, and the bottom end of the threaded column 305 is rotatably connected to a pressing block 306, which extends to the inner circle of the gland 304. This arrangement can better fix the cable.

[0038] In one embodiment, the terminal fixing mechanism 2 includes a sliding platform 201, the free end of the lateral moving unit 4 is fixedly connected to the sliding platform 201, and a vertical moving unit 6 is arranged above the sliding platform 201. By setting the vertical moving unit 6, the terminal can be stretched upward, so that the effect of the terminal cable connection strength can be detected from different directions. A pressing frame 202 is fixedly installed above the vertical moving unit 6, and a pressing plate 203 is arranged inside the pressing frame 202 to limit the relative stillness of the terminal and the pressing frame 202.

[0039] Threaded pressing rods 204 are vertically and downwardly threadedly connected on both sides of the top of the pressing frame 202. The threaded pressing rods 204 are located above the pressing plate 203. The pressing plate 203 is slidably connected to the pressing frame 202. Through this arrangement, the terminal can be squeezed.

[0040] A limiting groove 205 is provided on the front side of the bottom end of the pressure plate 203, and the inner part of the limiting groove 205 is slidably connected with a limiting block 206 extending forward for limiting the terminal from the edge, and the middle part of the limiting groove 205 is rotatably connected with a double-headed screw 207, and the spiral directions of the double-headed screw 207 are opposite. The two limiting blocks 206 are respectively threadedly connected to the two ends of the double-headed screw 207, and the distance between the two limiting blocks 206 can be adjusted by rotating the double-headed screw 207, so that the terminal can be limited from both sides, so that the terminal is evenly stressed during the lateral movement.

[0041] A fine-tuning screw 208 is threadedly connected to the middle of the pressing plate 203 , and the bottom end of the fine-tuning screw 208 extends to the bottom of the pressing plate 203 .

[0042] Limit rods 209 are fixedly installed on both sides of the bottom end of the pressing frame 202, and the limit rods 209 are slidably inserted into the interior of the sliding platform 201. This arrangement can ensure that the pressing frame 202 will not rotate.

[0043] The cross-sectional shape of the sliding block 303 is "L"-shaped, the cross-sectional shape of the sliding platform 201 is "J"-shaped, the lead shaft 302 is partially located below the sliding platform 201, and the sliding block 303 is partially located below the sliding platform 201. Through such an arrangement, the distance between the sliding block 303 and the sliding platform 201 can be reduced, thereby reducing the length of the cable involved in cable terminal detection.

[0044] The pressure cover 304 is threadedly connected to the sliding block 303 away from the hinged end by a bolt 307. There are two threaded columns 305, which are symmetrically arranged front to back. By setting double-end clamping, the cable can be prevented from being displaced when the terminal is moved obliquely upward.

[0045] When in use, the terminal after wiring is placed between the pressing frame 202 and the pressing plate 203, and the terminal can be squeezed by rotating the threaded pressing rod 204, and the position of the sliding block 303 is changed by rotating the lead shaft 302, so that the pressure cover 304 is as close as possible to the connection between the terminal and the cable to fix the cable, and the cable is fixed by rotating the pressing block 306, and the hook 507 is connected to the cable fixing mechanism 3 after the overall length of the threaded sleeve 504 and the threaded shaft 503 is changed by rotating the threaded sleeve 504, and the tension detector 501 is reset to zero by rotating the threaded sleeve 504, and the connection strength between the terminal and the cable is continued to be tested by the lateral moving unit 4. When the tension detector 501 does not break when the specified reading is displayed, it proves that the connection strength meets the standard. If the break occurs before the specified reading, it means that the connection strength does not meet the standard. Such a setting can adapt to different sizes of wiring terminals.

[0046] The cross-sectional shape of the sliding block 303 is "L"-shaped, the cross-sectional shape of the sliding platform 201 is "J"-shaped, the lead shaft 302 is partially located below the sliding platform 201, and the sliding block 303 is partially located below the sliding platform 201. Through such an arrangement, the distance between the sliding block 303 and the sliding platform 201 can be reduced, thereby reducing the length of the cable involved in cable terminal detection. The cable involved in the detection will be deformed due to stretching, and this part needs to be removed during the secondary production of the terminal. By reducing the length of the cable involved in cable terminal detection, the waste of cable can be avoided.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0048] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] 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 cable harness terminal connection strength detection device, comprising a base plate (1), characterized in that: A terminal fixing mechanism (2) for fixing the wiring terminal is slidably connected above the base plate (1); a cable fixing mechanism (3) for fixing the cable is arranged above the base plate (1); a lateral moving unit (4) for pushing the terminal fixing mechanism (2) away from the cable fixing mechanism (3) is fixedly installed above the base plate (1); a tension detection mechanism (5) is arranged between the cable fixing mechanism (3) and the terminal fixing mechanism (2); The tension detection mechanism (5) comprises a tension detector (501), a fixing ring (502) is fixedly mounted on the fixed end of the tension detector (501), the fixing ring (502) is connected to the terminal fixing mechanism (2), a threaded shaft (503) is fixedly mounted on the detection end of the tension detector (501), a threaded sleeve (504) is threadedly connected to the outer surface of the threaded shaft (503), a rotating ring (505) is fixedly mounted on the end of the threaded sleeve (504) away from the threaded shaft (503), a universal joint (506) is fixedly mounted on the end of the rotating ring (505) away from the threaded sleeve (504), a hook (507) is fixedly mounted on the end of the universal joint (506) away from the rotating ring (505), and the hook (507) is mounted on the outer surface of the cable fixing mechanism (3).

2. A cable harness terminal connection strength detection device according to claim 1, characterized in that: The cable fixing mechanism (3) comprises symmetrically arranged brackets (301), a lead shaft (302) being rotatably connected between the two brackets (301), a sliding block (303) moving relative to the base plate (1) being engaged on the outer side of the lead shaft (302), and a pressure cover (304) for limiting the relative stillness of the cable and the sliding block (303) being arranged above the sliding block (303).

3. A cable harness terminal connection strength detection device according to claim 2, characterized in that: The top end of the gland (304) is threadedly connected to a threaded column (305), and the bottom end of the threaded column (305) is rotatably connected to a pressing block (306), which extends to the inner ring of the gland (304).

4. A cable harness terminal connection strength detection device according to claim 3, characterized in that: The terminal fixing mechanism (2) comprises a sliding platform (201), the free end of the transverse moving unit (4) is fixedly connected to the sliding platform (201), a vertical moving unit (6) is arranged above the sliding platform (201), a pressing frame (202) is fixedly installed above the vertical moving unit (6), and a pressing plate (203) is arranged inside the pressing frame (202) to limit the relative stillness of the terminal and the pressing frame (202).

5. A cable harness terminal connection strength detection device according to claim 4, characterized in that: Threaded pressing rods (204) are vertically and downwardly threadedly connected on both sides of the top of the pressing frame (202). The threaded pressing rods (204) are located above the pressing plate (203). The pressing plate (203) is slidably connected to the pressing frame (202).

6. A cable harness terminal connection strength detection device according to claim 5, characterized in that: A limiting groove (205) is provided at the front side of the bottom end of the pressing plate (203); a limiting block (206) extending forward for limiting the terminal from the edge is slidably connected inside the limiting groove (205); a double-headed screw (207) is rotatably connected in the middle of the limiting groove (205); the spiral directions of the double-headed screw (207) are opposite, and the two limiting blocks (206) are respectively threadedly connected to the two ends of the double-headed screw (207).

7. A cable harness terminal connection strength detection device according to claim 6, characterized in that: A fine-tuning screw rod (208) is threadedly connected to the middle portion of the pressing plate (203), and the bottom end of the fine-tuning screw rod (208) extends to the bottom of the pressing plate (203).

8. A cable harness terminal connection strength detection device according to any one of claims 4 to 7, characterized in that: Limiting rods (209) are fixedly installed on both sides of the bottom end of the pressing frame (202), and the limiting rods (209) are slidably inserted into the interior of the sliding platform (201).

9. A cable harness terminal connection strength detection device according to claim 8, characterized in that: The cross-sectional shape of the sliding block (303) is an "L" shape, the cross-sectional shape of the sliding platform (201) is an "X" shape, the lead shaft (302) is partially located below the sliding platform (201), and the sliding block (303) is partially located below the sliding platform (201).

10. A cable harness terminal connection strength detection device according to claim 8, characterized in that: The gland (304) is threadedly connected to the sliding block (303) via a bolt (307) at the end away from the hinge. There are two threaded columns (305), which are symmetrically arranged front and back.

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