Anti-drop connector and cable harness

Abstract

The utility model discloses an anti-drop connector and a cable harness, comprising a male end and a female end, wherein the left end of the male end is provided with a plug-in end, the right end of the female end is provided with a plug-in hole, a screw sleeve is also sleeved on the male end, an external thread is provided on the outer surface of the female end, the plug-in end is inserted into the plug-in hole, and the screw sleeve is screwed and connected with the external thread, and is characterized in that: a clearance hole is provided on the outer surface of the female end, a limiting member is installed in the clearance hole, an elastic member for pushing the limiting member to move outward is provided between the limiting member and the clearance hole, and the outer end of the limiting member protrudes outside the clearance hole; a limiting hole matching the limiting member is provided on the outer surface of the screw sleeve, and the outer end of the limiting member is inserted into the limiting hole; when the limiting member is under pressure, the limiting member compresses the elastic member and retracts the outer end of the limiting member into the clearance hole. The utility model improves the firmness and safety of use.

Description

Technical Field

[0001] The utility model relates to a cable harness, in particular to an anti-drop connector and a cable harness. Background Art

[0002] The cable harness is a circuit connector used between devices or between devices and power sources. Among them, for many cable harnesses connecting devices to each other, connectors are generally used at both ends, so that the cable harness and the connector can be quickly connected and installed. The equipment will vibrate during operation. Especially for equipment with relatively large vibrations, the connection between the cable harness and the equipment is prone to loosening during long-term operation. Therefore, a screw sleeve is generally provided on the connector, and the screw sleeve is used for threaded connection to prevent the connector from loosening. However, due to the existence of vibration, the threaded connection may also become loose, resulting in loose connection of the connector and unstable electrical connection. Therefore, how to solve the above-mentioned technical problems is the direction that technicians in this field need to work hard on. Summary of the invention

[0003] The utility model aims to provide an anti-drop connector and a cable harness. By using the structure, the stability and safety of the cable harness during use can be effectively guaranteed.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an anti-drop connector, including a male end and a female end, the left end of the male end is provided with a plug-in end, the right end of the female end is provided with a plug-in hole, the male end is also sleeved with a screw sleeve, the outer surface of the female end is provided with an external thread, the plug-in end is inserted into the plug-in hole, the screw sleeve is threadedly connected with the external thread, the outer surface of the female end is provided with a clearance hole, a limiter is installed in the clearance hole, an elastic member for pushing the limiter to move outward is provided between the limiter and the clearance hole, and the outer end of the limiter protrudes outward from the outside of the clearance hole;

[0005] A limiting hole matching the limiting member is provided on the outer surface of the screw sleeve, and the outer end of the limiting member is inserted into the limiting hole;

[0006] When the limiting member is pressed, the limiting member compresses the elastic member and causes the outer end of the limiting member to retract into the clearance hole.

[0007] In the above technical solution, the clearance hole is arranged at the external thread.

[0008] In the above technical solution, an annular limiting groove is provided on the outer surface of the right end of the male end;

[0009] A blocking ring extending inward is provided on the right inner wall of the screw sleeve, and the blocking ring is arranged on the right side of the annular limiting groove. The annular limiting groove is located inside the screw sleeve, and an internal thread matching the external thread is provided on the inner surface of the screw sleeve.

[0010] In the above technical solution, both ends of the limiting hole pass through the inner surface and the outer surface of the screw sleeve.

[0011] In the above technical solution, a card slot is provided on the inner wall of the plug hole, the right end of the card slot is connected to the right end face of the female end, the inner end of the clearance hole is connected to the card slot, and a card plate is inserted in the card slot.

[0012] In the above technical solution, the clearance hole includes an inner hole and an outer hole coaxially arranged, the diameter of the inner hole is larger than the diameter of the outer hole, the outer end of the outer hole is connected to the outer surface of the female end, and the inner end of the inner hole is connected to the card slot and the plug hole;

[0013] A limiting ring is provided on the outer surface of the inner end of the limiting member, the outer diameter of the limiting ring is larger than the diameter of the outer hole, the limiting ring is arranged in the inner hole, and the limiting member passes through the outer hole and is arranged outside the female end;

[0014] An installation hole is provided on the inner end surface of the limiting member, one end of the elastic member is inserted into the installation hole, and the other end of the elastic member is against the clamping plate.

[0015] In the above technical solution, the elastic member includes a spring, the outer end of the spring is inserted into the mounting hole, and the outer end of the spring abuts against the end surface of the mounting hole, and the inner end of the spring abuts against the side wall of the clamping plate.

[0016] In the above technical solution, a connecting plate is also provided at the inner end of the spring, and the inner end of the spring is connected to the connecting plate. A connecting groove is provided on the side wall of the clamping plate, and the connecting plate is arranged in the connecting groove, and the inner end surface of the connecting plate is against the end surface of the connecting groove.

[0017] In the above technical solution, the outer end of the limiting member is a spherical surface or an arc-shaped surface.

[0018] The utility model also provides a cable harness, comprising a cable and the above-mentioned anti-drop connector, wherein the male end and the female end are respectively installed at two ends of the cable.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] 1. In the utility model, a limiting piece that can extend out of the outer surface of the female end is arranged on the female end. The limiting piece extends out of the outer surface of the female end by being pushed by the elastic piece, and a limiting hole matching the limiting piece is arranged on the screw sleeve. In this way, after the screw sleeve and the female end are screwed together, the limiting piece can be inserted into the limiting hole again to achieve secondary limiting. In this way, even if the connector is subjected to vibration force, the screw sleeve can be limited by the limiting piece and the limiting hole to prevent the screw sleeve and the female end from loosening, thereby ensuring the stability of the connector, the electrical performance, and the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the anti-drop connector in the first embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the female end in the first embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the male end in the first embodiment of the present utility model;

[0024] Figure 4 It is a partial cross-sectional structural schematic diagram of the installation location of the limiting member in the first embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the cable harness in the first embodiment of the utility model.

[0026] Among them: 1. male end; 2. female end; 3. plug-in end; 4. plug-in hole; 5. screw sleeve; 6. clearance hole; 7. limiter; 8. elastic member; 9. limiter hole; 10. male terminal; 11. female terminal; 12. annular limiter groove; 13. blocking ring; 14. slot; 15. clamping plate; 16. inner hole; 17. outer hole; 18. limiter ring; 19. mounting hole; 20. connecting plate; 21. connecting groove; 22. cable. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] Example 1: See Figures 1 to 4As shown, an anti-drop connector comprises a male end 1 and a female end 2, wherein the left end of the male end 1 is provided with a plug-in end 3, the right end of the female end 2 is provided with a plug-in hole 4, the male end 1 is also sleeved with a screw sleeve 5, the inner surface of the screw sleeve 5 is provided with an internal thread, the outer surface of the female end 2 is provided with an external thread (the external thread is not shown in the figure), the plug-in end 3 is inserted into the plug-in hole 4, the screw sleeve 5 is threadedly connected to the external thread, a clearance hole 6 is provided on the outer surface of the female end 2, a stopper 7 is installed in the clearance hole 6, an elastic member 8 for pushing the stopper 7 to move outward is provided between the stopper 7 and the clearance hole 6, and the outer end of the stopper 7 protrudes outward from the outside of the clearance hole 6;

[0029] A limiting hole 9 matching the limiting member 7 is provided on the outer surface of the screw sleeve 5, and the outer end of the limiting member 7 is inserted into the limiting hole 9;

[0030] When the limiting member 7 is pressed, the limiting member 7 compresses the elastic member 8 and causes the outer end of the limiting member 7 to retract into the clearance hole 6 .

[0031] Wherein, the clearance hole is arranged at the external thread.

[0032] In this embodiment, a male terminal 10 is provided in the plug end 3, and a female terminal 11 is provided in the plug hole 4. When the connector is plugged in, the male plug end is inserted into the plug hole of the female end. At this time, the male terminal and the female terminal are plugged in and matched to achieve electrical connection. After the plug end and the plug hole are plugged in, the screw sleeve is moved to the left so that the end of the internal thread of the screw sleeve contacts the end of the external thread of the female end, and then the screw sleeve is rotated so that the screw sleeve and the external thread of the female end are screwed together. When the left end of the screw sleeve is about to contact the limiter, the operator presses the limiter inward with external force so that the limiter retracts into the clearance hole, and continues to rotate the screw sleeve. When the screw sleeve is outside the clearance hole, the pressure of the limiter is released. At this time, the elastic member The restoring force wants to push the limiter to move outward, but at this time, since the screw sleeve is outside the limiter, the screw sleeve will limit the limiter, so that the limiter cannot extend out of the hole and leak out, and then continue to rotate the screw sleeve until the screw sleeve is screwed. At this time, the limiter is facing the limiter hole. Since the elastic member always gives the limiter an outward thrust, the screw sleeve loses its limiting force on the limiter. At this time, the limiter is pushed out by the elastic member and penetrates into the limiter hole, thereby completing the screw connection between the screw sleeve and the female end. In this way, when in use, even if it is subjected to a large vibration force, the screw sleeve will not loosen from the female end, because when the screw sleeve wants to loosen from the female end, the screw sleeve needs to rotate in the opposite direction, but since the limiter is inserted in the limiter hole, the rotational movement of the screw sleeve is limited, thereby achieving a stable connection between the screw sleeve and the female end, thereby ensuring the contact firmness between the male end and the female end. Among them, if it is considered that the outer surface of the female end is not provided with an external thread, and the internal thread is not provided inside the screw sleeve, and the limiting is directly limited by the limiting hole and the limiting piece, when the screw sleeve is subjected to axial force, the limiting piece is easy to break, etc., thereby causing the limiting piece to fail, and the connection between the screw sleeve and the female end will also fail, resulting in poor or unstable limiting effect. Therefore, by adopting the screw connection between the screw sleeve and the female end, and then limiting by the limiting piece and the limiting hole, the axial limiting can be achieved by the screw connection between the screw sleeve and the external thread, and the circumferential limiting can be achieved by the limiting piece and the limiting hole, so as to realize the dual fixation of the male end and the female end, and ensure the firmness and stability of the connection between the male end and the female end.

[0033] The two ends of the limiting hole penetrate the inner surface and the outer surface of the screw sleeve. Therefore, when the male end and the female end need to be disassembled, the staff presses the limiting piece into the clearance hole by external force, so that the limiting piece is disengaged from the limiting hole, and the operator rotates the screw sleeve in the opposite direction. At this time, the screw sleeve beside the limiting hole is facing the limiting piece, and the limiting piece is extended outward by the screw sleeve. The screw sleeve is continued to be rotated in the opposite direction to separate the screw sleeve and the female end. After the screw sleeve and the female end are separated, an external force is applied to keep the male end and the female end relatively away, so that the male end and the female end can be disassembled. Moreover, when installing and disassembling, the male end and the female end can be quickly assembled and disassembled without tools.

[0034] See also Figure 1 , 3 As shown, an annular limiting groove 12 is provided on the outer surface of the right end of the male end 1;

[0035] A blocking ring 13 extending inward is provided on the right inner wall of the screw sleeve 5, and the blocking ring 13 is arranged on the right side of the annular limiting groove 12. The annular limiting groove 12 is located inside the screw sleeve 5, and an internal thread matching the external thread is provided on the inner surface of the screw sleeve 5.

[0036] In this embodiment, the presence of the annular limit groove and the blocking ring, when the screw sleeve and the female end are screwed together, the limit ring and the annular limit groove are used to limit the screw sleeve from moving leftward, so that the screw sleeve cannot move leftward and separate from the male end. At the same time, during the screw connection process between the screw sleeve and the female end, after the annular limit groove and the blocking ring are in contact, if the plug-in end and the plug-in hole are not fully plugged into place at this time, the external thread of the screw sleeve and the female end continue to be screwed together. During the screw connection process between the screw sleeve and the external thread of the female end, the distance between the left side surface of the female end and the right side surface of the screw sleeve will gradually decrease. Since the blocking ring and the annular limit groove are in contact at this time, during the screw connection process between the screw sleeve and the female end, the male end and the female end will be pulled closer to each other until the two can no longer get closer. At this time, the limit member will be opposite to the limit hole, so the plug-in of the male end and the female end can be completed, and the stability of the electrical connection between the male end and the female end can be ensured.

[0037] Of course, the annular limiting groove may not be provided, and a blocking ring may be provided directly. When the screw sleeve is screwed, the left end face of the blocking ring can be against the right end face of the male end, which can also play a limiting role. However, in actual use, if the annular limiting groove is not provided, there are still some defects: 1. The blocking ring is exposed on the right side of the male end; 2. The contact point between the right end face of the male end and the blocking ring will produce some marks due to the squeezing of the blocking ring, which is different from other positions of the right end face of the male end and is not beautiful; 3. The leaking blocking ring may scratch the staff when the staff assembles or disassembles it. Therefore, in the utility model, the setting of the annular limiting groove is adopted to solve the above-mentioned defects.

[0038] See also Figure 1 , 2 As shown in FIG. 4 , a card slot 14 is provided on the inner wall of the plug hole 4, the right end of the card slot 14 is connected to the right end face of the female end 2, the inner end of the clearance hole 6 is connected to the card slot 14, and a card plate 15 is inserted in the card slot 14.

[0039] The clearance hole 6 includes an inner hole 16 and an outer hole 17 which are coaxially arranged. The diameter of the inner hole 16 is larger than the diameter of the outer hole 17. The outer end of the outer hole 17 is connected to the outer surface of the female end 2, and the inner end of the inner hole 16 is connected to the card slot 14 and the plug hole 4.

[0040] A limiting ring 18 is provided on the outer surface of the inner end of the limiting member 7. The outer diameter of the limiting ring 18 is greater than the diameter of the outer hole 17. The limiting ring 18 is arranged in the inner hole 16. The limiting member 7 passes through the outer hole 17 and is arranged outside the female end 2.

[0041] A mounting hole 19 is formed on the inner end surface of the limiting member 7 , one end of the elastic member 8 is inserted into the mounting hole 19 , and the other end of the elastic member 8 abuts against the clamping plate 15 .

[0042] In this embodiment, in order to facilitate the installation of the limiter, a slot is provided, preferably, the slot adopts a T-shaped structure or an inverted T-shaped structure, and the card plate matches the slot. When installing, the limiter is inserted into the hole in advance, the limiter is inserted from the inner hole into the outer hole and is located outside the outer hole, the limit ring is located in the inner hole, and the elastic member is inserted into the installation hole of the limiter, and then the card plate is inserted into the slot, so that the card plate is against the elastic member, and the elastic member is supported by the card plate, so that when the limiter is retracted into the outer hole by an external force, the inner end position of the elastic member will not move, so that the elastic member is compressed. In this way, it is mainly convenient to install the limiter and the elastic member. At the same time, when the elastic member extends, it pushes the limiter to move outward, and it will also be limited by the limit ring and the inner hole, so that the distance the limiter moves outward is also limited. The limiter will also be limited by the elastic member and the card plate when it moves inward.

[0043] The elastic member 8 comprises a spring, the outer end of which is inserted into the mounting hole 19, and the outer end of which abuts against the end surface of the mounting hole 19, and the inner end of which abuts against the side wall of the card. The elastic member is a spring, which has low cost and good elastic effect.

[0044] See also Figure 1 , 2 As shown in Figure 4, a connecting plate 20 is further provided at the inner end of the spring, and the inner end of the spring is connected to the connecting plate 20. A connecting groove 21 is provided on the side wall of the clamping plate 15, and the connecting plate 20 is arranged in the connecting groove 21, and the inner end surface of the connecting plate 20 is against the end surface of the connecting groove 21.

[0045] When the spring is in the extended state, the inner end of the spring will be in the slot during assembly. When the card is inserted into the slot, the card will bend the inner end of the spring, or the card will push the spring out of the mounting hole, resulting in relatively greater installation difficulty. Therefore, by setting a connecting plate and a connecting slot, when the card is pushed into the slot during assembly, the connecting slot is directly opposite the connecting plate, or the connecting plate and the connecting slot are in the same straight line, and only a little outward extrusion force is needed to be given to the connecting plate, so that the connecting slot is directly opposite the connecting plate, and then the card is quickly pushed so that the right end of the connecting plate enters the slot, and the card continues to be pushed into the slot, the spring and the card can be assembled. In this way, the convenience of assembly is improved. At the same time, the presence of the connecting plate can also increase the contact area between the spring and the card, ensure the service life of the card, and is not easy to deform. At the same time, after the plug-in end is inserted into the plug-in hole, the card can also be supported to ensure that the card will not be deformed or damaged by the pressure of the elastic member.

[0046] Furthermore, the outer end of the limiter is a spherical surface or an arc surface. In this way, when the screw sleeve and the external thread are screwed together, the outer end of the limiter is slightly pressed into the clearance hole, and part of the outer end of the limiter is still in the clearance hole. The rotation of the screw sleeve can also squeeze the limiter through the spherical surface or the arc surface, and the limiter is pressed into the clearance hole, which is convenient for the assembly of the screw sleeve. Of course, it is also possible that only the outer end of the limiter protrudes outside the clearance hole. In this way, when the screw sleeve and the female end are screwed together, the screw sleeve directly squeezes the outer end of the limiter to press the limiter into the clearance hole. There is no need to manually press the limiter into the clearance hole, and the screw sleeve and the female end can also be quickly screwed together. In this way, there is no need for external force to press the limiter into the clearance hole when disassembling, but when the screw sleeve rotates and the female end is disengaged, the required rotational force is greater, thereby also playing a circumferential limiting role.

[0047] See also Figure 5 As shown, the utility model also provides a cable harness, including a cable 22, and also including the above-mentioned anti-drop connector, wherein the male end 1 and the female end 2 are respectively installed at both ends of the cable 22. Among them, the outer diameter of the male end is equal to the outer diameter of the female end, and the existence of the cable, the annular limit groove and the blocking ring ensures that the screw sleeve is between the cable and the male end and will not fall off.

Claims

1. An anti-drop connector, comprising a male end and a female end, wherein the left end of the male end is provided with a plug-in end, the right end of the female end is provided with a plug-in hole, the male end is also provided with a screw sleeve, the outer surface of the female end is provided with an external thread, the plug-in end is inserted into the plug-in hole, the screw sleeve is screwed and connected to the external thread, characterized in that: A clearance hole is provided on the outer surface of the female end, a limiting member is installed in the clearance hole, an elastic member for pushing the limiting member to move outward is provided between the limiting member and the clearance hole, and the outer end of the limiting member protrudes outside the clearance hole; A limiting hole matching the limiting member is provided on the outer surface of the screw sleeve, and the outer end of the limiting member is inserted into the limiting hole; When the limiting member is pressed, the limiting member compresses the elastic member and causes the outer end of the limiting member to retract into the clearance hole.

2. The anti-drop connector according to claim 1, characterized in that: The clearance hole is arranged at the external thread.

3. The anti-drop connector according to claim 1, characterized in that: An annular limiting groove is provided on the outer surface of the right end of the male end; A blocking ring extending inward is provided on the right inner wall of the screw sleeve, and the blocking ring is arranged on the right side of the annular limiting groove. The annular limiting groove is located inside the screw sleeve, and an internal thread matching the external thread is provided on the inner surface of the screw sleeve.

4. The anti-drop connector according to claim 1, characterized in that: The two ends of the limiting hole penetrate the inner surface and the outer surface of the screw sleeve.

5. The anti-drop connector according to claim 1, characterized in that: A card slot is arranged on the inner wall of the plug hole, the right end of the card slot is connected with the right end face of the female end, the inner end of the clearance hole is connected with the card slot, and a card plate is inserted in the card slot.

6. The anti-drop connector according to claim 5, characterized in that: The clearance hole comprises an inner hole and an outer hole which are coaxially arranged, the diameter of the inner hole is larger than the diameter of the outer hole, the outer end of the outer hole is connected to the outer surface of the female end, and the inner end of the inner hole is connected to the card slot and the plug hole; A limiting ring is provided on the outer surface of the inner end of the limiting member, the outer diameter of the limiting ring is larger than the diameter of the outer hole, the limiting ring is arranged in the inner hole, and the limiting member passes through the outer hole and is arranged outside the female end; An installation hole is provided on the inner end surface of the limiting member, one end of the elastic member is inserted into the installation hole, and the other end of the elastic member is against the clamping plate.

7. The anti-drop connector according to claim 6, characterized in that: The elastic member comprises a spring, the outer end of the spring is inserted into the mounting hole, the outer end of the spring abuts against the end surface of the mounting hole, and the inner end of the spring abuts against the side wall of the clamping plate.

8. The anti-drop connector according to claim 7, characterized in that: The inner end of the spring is also provided with a connecting plate, the inner end of the spring is connected to the connecting plate, a connecting groove is provided on the side wall of the clamping plate, the connecting plate is arranged in the connecting groove, and the inner end surface of the connecting plate is against the end surface of the connecting groove.

9. The anti-drop connector according to claim 1, characterized in that: The outer end of the limiting member is a spherical surface or an arc surface.

10. A cable harness, characterized in that: It comprises a cable and also comprises an anti-drop connector as described in any one of claims 1 to 9, wherein the male end and the female end are respectively installed at two ends of the cable.

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