A self-locking connector

Abstract

The present invention discloses a self-locking connector, which belongs to the technical field of power connectors, and includes a wiring housing and a threading housing. The inner end face of the wiring housing is connected to a wiring seat through a threaded sleeve, and the outer wall of the wiring seat is connected to a wire clamping sleeve through a limiting assembly that is convenient for limiting the position of the wire bundle. The inner wall of the threading housing is connected to a supporting cavity ring for improving the strength of the connector through a fixing ring, and one end of the supporting cavity ring is connected to a plurality of ejector rods through a piston ring. The present invention can ensure the sealing of the connector before use by utilizing the misalignment of the sealing plate and the dividing plate through the arrangement of the sealing plate and the airbag ring, separate the wire harness during wiring and wiring, and avoid heating after the wire harness is entangled. When assembling after the wiring is completed, the airbag ring expands to ensure the sealing after wiring. At the same time, the arrangement of the supporting cavity ring and the supporting arc plate can utilize the triangular structure between the two supporting arc plates and the supporting cavity ring to improve the compressive strength of the connector.

Description

Technical Field

[0001] The present invention relates to the technical field of power connectors, and in particular to a self-locking connector. Background Art

[0002] A connector generally refers to an electrical connector, which is a device that connects two active devices and transmits current or signals. The male and female ends can transmit information or current after contact.

[0003] Before the power connector is used, a cover is generally used on the connection port to prevent dust and moisture. When wiring is performed, the cover needs to be removed, which makes the connector redundant after wiring, resulting in material waste. In addition, when the power connector is used in an application environment with continuous vibration conditions, higher requirements are placed on the strength of the connector shell. Generally, high-strength plastic materials or metal materials are used to produce the shell. However, this will increase the production cost compared to conventional connectors, so a self-locking connector is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that a power connector generally uses a cover on the connection port to prevent dust and moisture before use, but the cover needs to be removed when wiring, which makes the connector redundant after wiring, resulting in waste of materials, and when the power connector is used in an application environment with continuous vibration conditions, there are higher requirements on the strength of the connector shell, and generally high-strength plastic materials or metal materials are used to produce the shell, which, however, will increase the production cost compared with conventional connectors, and a self-locking connector is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-locking connector comprises a wiring housing and a threading housing, wherein the inner end surface of the wiring housing is connected to a wiring seat via a threaded sleeve, and the outer side wall of the wiring seat is connected to a wire clamping sleeve via a limiting component for facilitating the limiting of the wire bundle;

[0007] The inner wall of the threading housing is connected to a support cavity ring for improving the strength of the connector through a fixed ring, one end of the support cavity ring is connected to multiple push rods through a piston ring, the other end of the support cavity ring is connected to a branching assembly to prevent the wiring harness from being entangled, and multiple groups of support arc plates for supporting the strength of the connector are arranged in an array on the outer walls at both ends of the support cavity ring, the inside of the support cavity ring is connected to a push shaft through two pneumatic telescopic rods, the outer wall of the push shaft is connected to the inner ends of two adjacent support arc plates, and the outer end of the support arc plate is connected to an adjustment assembly.

[0008] Preferably, an inner wall at one end of the threading housing is provided with an internal thread, the inner wall at one end of the threading housing is threadedly connected to the outer wall of the threaded sleeve, the inner end surface of the wiring housing is assembled and fixed to one end of the wiring seat through the threaded sleeve, and the other end of the threading housing is fixedly equipped with a tail sleeve.

[0009] Preferably, a limiting ring is fixedly connected to the inner side wall of the wiring housing end, and a positioning ring is fixedly connected to the outer side wall of the threading housing, and the inner diameter of the limiting ring is larger than the outer diameter of the positioning ring.

[0010] Preferably, the limiting assembly consists of a ring and a plurality of rubber beads, the inner side wall of the ring is fixedly connected to the outer side wall of the terminal block, the outer side wall of the ring is fixedly connected to the side wall of the rubber beads, and the inner side wall of the end of the wire clamping sleeve is provided with a plurality of assembly grooves adapted to the rubber beads.

[0011] Preferably, the inner wall of the threading housing is fixedly connected to the outer wall of the support cavity ring through a fixing ring, the internal cavity at one end of the support cavity ring is slidably connected to the side wall of the piston ring, and the end of the piston ring is fixedly connected to the ends of multiple push rods.

[0012] Preferably, the line splitter assembly consists of a line splitter plate and a sealing plate, the other end of the support cavity ring is fixedly connected to one end of the sealing plate, the line splitter plate is rotatably connected to the sealing plate via a fastening shaft, and both the line splitter plate and the sealing plate are made of rubber.

[0013] Preferably, the sealing plate and the wiring board are each provided with three wiring holes, the inner side walls of the wiring holes on one end of the sealing plate are each provided with an airbag ring, and the airbag ring is interconnected with the inside of the support cavity ring through an air tube.

[0014] Preferably, the interior of the support cavity ring is communicated with the interior of the pneumatic telescopic rod, the movable end of the pneumatic telescopic rod is fixedly connected to the end of the top shaft, and the outer side wall of the top shaft is rotatably connected to the inner end side wall of the support arc plate.

[0015] Preferably, the adjustment assembly consists of a compensation rod and a compensation slide, the outer wall of the support cavity ring is provided with arc-shaped grooves on both sides of the outer end of the support arc plate, the outer end of the support arc plate is rotatably connected to the end face of the compensation slide through the compensation rod, the side wall of the compensation slide is slidably connected to the inner wall of the arc-shaped groove, the inner wall at the end of the arc-shaped groove is fixedly connected with two symmetrical limit rods, and limit grooves matching the limit rods are provided on both end faces of the compensation slide.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This solution can prevent the wiring harness at the wiring seat from spreading out and affecting the firmness of the wiring part of the wiring seat by setting the ring and the rubber bead through the mutual limiting fixation of the wiring seat and the wire clamping sleeve.

[0018] 2. This solution can ensure the sealing of the connector before use by setting up the sealing plate and the airbag ring, and utilize the misalignment of the sealing plate and the junction plate to separate the wiring harness during wiring and arrangement to avoid heating after the wiring harness is entangled. When assembling after the wiring is completed, the airbag ring expands to ensure the sealing after wiring.

[0019] 3. Through the setting of the support cavity ring and the support arc plate, this scheme can utilize the triangular structure between the two support arc plates and the support cavity ring to improve the compressive strength of the connector, so that the connector can use conventional materials to achieve a compressive effect close to that of high-strength materials, effectively reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional structure diagram of a self-locking connector proposed by the present invention Figure 1 ;

[0021] Figure 2 A three-dimensional structure diagram of a self-locking connector proposed by the present invention Figure 2 ;

[0022] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the exploded structure of a self-locking connector proposed by the present invention;

[0024] Figure 5 A schematic diagram of the structure of the connection between the supporting cavity ring and the threading housing in a self-locking connector proposed by the present invention;

[0025] Figure 6 A schematic structural diagram of a line splitter assembly in a self-locking connector proposed by the present invention;

[0026] Figure 7 The present invention provides a structural schematic diagram of the connection between two adjacent supporting arc plates in a self-locking connector.

[0027] In the figure: 1. Wiring housing; 2. Threading housing; 3. Tail sleeve; 4. Positioning ring; 5. Threaded sleeve; 6. Limiting ring; 7. Terminal block; 8. Ring; 9. Rubber bead; 10. Wire clamp; 11. Fixing ring; 12. Support cavity ring; 13. Piston ring; 14. Push rod; 15. Sealing plate; 16. Fastening shaft; 17. Distribution plate; 18. Airbag ring; 19. Pneumatic telescopic rod; 20. Push shaft; 21. Support arc plate; 22. Compensation rod; 23. Compensation slide plate; 24. Limiting rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1, refer to Figure 1-Figure 7 A self-locking connector comprises a wiring housing 1 and a threading housing 2, wherein the inner end surface of the wiring housing 1 is connected to a wiring seat 7 through a threaded sleeve 5, and the outer side wall of the wiring seat 7 is connected to a clamping sleeve 10 through a limiting component for facilitating the limiting of the wiring bundle;

[0030] Furthermore, an inner thread is provided on the inner side wall at one end of the threading housing 2, and the inner side wall at one end of the threading housing 2 is threadedly connected to the outer side wall of the threaded sleeve 5, the inner end face of the wiring housing 1 is assembled and fixed with one end of the wiring seat 7 through the threaded sleeve 5, and the other end of the threading housing 2 is fixedly assembled with a tail sleeve 3, the inner side wall of the end of the wiring housing 1 is fixedly connected with a limit ring 6, and the outer side wall of the threading housing 2 is fixedly connected with a positioning ring 4, the inner diameter of the limit ring 6 is larger than the outer diameter of the positioning ring 4, the limit assembly is composed of a collar 8 and a plurality of rubber beads 9, the inner side wall of the collar 8 is fixedly connected to the outer side wall of the wiring seat 7, the outer side wall of the collar 8 is fixedly connected to the side wall of the rubber bead 9, and the inner side wall of the end of the clamping sleeve 10 is provided with a plurality of assembly grooves adapted to the rubber beads 9;

[0031] It should be noted that: the combined wiring harness of the live wire, the neutral wire and the ground wire is passed through the tail sleeve 3 and the threading housing 2 in sequence, and then the wiring harness is gathered by the clamping sleeve 10 and connected to the connector on the terminal block 7 in sequence. After the clamping sleeve 10 gathers the wiring harness, the rubber bead 9 on the ring 8 on the outer wall of the terminal block 7 is pressed into the assembly groove on the inner wall of the end of the clamping sleeve 10, so as to realize the mutual limitation of the terminal block 7 and the clamping sleeve 10, and avoid the position displacement of the clamping sleeve 10 in the working environment of continuous vibration, thereby causing the wiring harness at the terminal block 7 to spread out without restraint. Then, the line will move continuously in the vibrating working environment, so that the wiring point of the line and the terminal block 7 is continuously pulled by the active type, affecting the firmness of the wiring;

[0032] A further advantage of adopting the above method is that the wiring base 7 and the wire clamping sleeve 10 can be mutually limited and fixed to prevent the wire harness at the wiring base 7 from spreading out and affecting the firmness of the wiring part of the wiring base 7.

[0033] Example 2, reference Figure 1-Figure 7 The inner wall of the threading housing 2 is connected to a support cavity ring 12 for improving the strength of the connector through a fixing ring 11, one end of the support cavity ring 12 is connected to a plurality of ejector rods 14 through a piston ring 13, and the other end of the support cavity ring 12 is connected to a branching assembly for preventing the wiring harness from being entangled;

[0034] Furthermore, the inner wall of the threading housing 2 is fixedly connected to the outer wall of the supporting cavity ring 12 through a fixing ring 11, the internal cavity at one end of the supporting cavity ring 12 is slidably connected to the side wall of the piston ring 13, the end of the piston ring 13 is fixedly connected to the ends of multiple push rods 14, the line dividing assembly is composed of a line dividing plate 17 and a sealing plate 15, the other end of the supporting cavity ring 12 is fixedly connected to one end of the sealing plate 15, the line dividing plate 17 is rotatably connected to the sealing plate 15 through a fastening shaft 16, the line dividing plate 17 and the sealing plate 15 are both made of rubber, three line arrangement holes are provided on the sealing plate 15 and the line dividing plate 17, the inner wall of the line arrangement hole on one end of the sealing plate 15 is provided with an air bag ring 18, and the air bag ring 18 is interconnected with the inside of the supporting cavity ring 12 through an air pipe;

[0035] It should be noted that: before wiring, the wiring holes on the sealing plate 15 and the branching plate 17 are in a mutually misaligned state, which is convenient for dust and moisture protection of the terminal block 7 before the connector is used. When wiring is required, the fastening shaft 16 is used to rotate the branching plate 17 on the sealing plate 15, so that the wiring holes on the sealing plate 15 and the branching plate 17 are aligned one by one. Since the sealing plate 15 and the branching plate 17 are both made of rubber, the rotational friction between the two is very large, which is convenient for using friction to limit the position after rotation, and then let the wiring harness pass through the sealing plate 15 and the branching plate 17 in turn. The wiring hole on 7 prevents the wiring harness from getting entangled and heated in the connector. After the wiring is completed, the threaded sleeve 5 in the wiring housing 1 and the internal thread at the end of the threading housing 2 are used for threaded connection. During the continuous threading process, the push rod 14 is pressed to press the piston ring 13 into the internal cavity of the support cavity ring 12, so that the air pressure in the internal cavity of the support cavity ring 12 gradually increases. Then, the airbag ring 18 connected to the internal cavity of the support cavity ring 12 is pressurized and expanded, which will compress the line at the wiring hole of the sealing plate 15, so that the sealing inside the connector is good after wiring;

[0036] The further advantage of adopting the above method is that the misalignment of the sealing plate 15 and the wiring board 17 can be used to ensure the sealing of the connector before use, separate the wiring harness during wiring and arrangement, avoid the heating of the wiring harness after entanglement, and ensure the sealing after wiring through the expansion of the airbag ring 18 during assembly after the wiring is completed.

[0037] Example 3, reference Figure 1-Figure 7 , multiple groups of supporting arc plates 21 for supporting the strength of the connector are arranged in an array on the outer side walls at both ends of the supporting cavity ring 12, and the inside of the supporting cavity ring 12 is connected to a top shaft 20 through two pneumatic telescopic rods 19, and the outer side wall of the top shaft 20 is connected to the inner ends of two adjacent supporting arc plates 21, and the outer ends of the supporting arc plates 21 are connected to the adjusting components;

[0038] Furthermore, the interior of the support cavity ring 12 is interconnected with the interior of the pneumatic telescopic rod 19, the movable end of the pneumatic telescopic rod 19 is fixedly connected to the end of the top shaft 20, the outer side wall of the top shaft 20 is rotatably connected to the inner end side wall of the support arc plate 21, the adjustment component is composed of a compensation rod 22 and a compensation slide 23, the outer side wall of the support cavity ring 12 is provided with an arc-shaped slide groove at both sides of the outer end of the support arc plate 21, the outer end of the support arc plate 21 is rotatably connected to the end face of the compensation slide 23 through the compensation rod 22, the side wall of the compensation slide 23 is slidably connected to the inner side wall of the arc-shaped slide groove, and two symmetrical limit rods 24 are fixedly connected to the inner side wall of the end of the arc-shaped slide groove, and limit grooves matching the limit rods 24 are provided on both end faces of the compensation slide 23;

[0039] It should be noted that: during assembly after wiring, the air pressure in the internal cavity of the support cavity ring 12 gradually increases, and the high-pressure gas will be gradually pressed into the pneumatic telescopic rod 19, so that the pneumatic telescopic rod 19 extends, and the pneumatic telescopic rod 19 will drive the top shaft 20 to move upward. Under the upward pull of the top shaft 20, the support arc plates 21 on both sides will deflect upward, and the compensation slide plate 23 slides in the arc-shaped slide groove on the outer wall of the support cavity ring 12 for distance compensation. The rotation between the top shaft 20 and the two support arc plates 21 and the rotation between the two compensation rods 22 and the two support arc plates 21 are used for angle compensation, so that the two support arc plates 21 rotate inward and stand up, forming a triangular structure with the outer wall of the support cavity ring 12. After the compensation slide plate 23 slides to the end, the limit rod 24 will be stuck in the limit groove on the end face of the compensation slide plate 23 for limiting. After the connector is assembled, the support cavity ring 12 will be on the outside of the wiring seat 7 to protect the wiring part of the connector.

[0040] A further benefit of adopting the above method is that the triangular structure between the two supporting arc plates 21 and the supporting cavity ring 12 can be utilized to improve the compressive strength of the connector, so that the connector can use conventional materials to achieve a compressive effect close to that of high-strength materials, effectively reducing production costs.

[0041] When the present invention is in use, the combined wiring harness of the live wire, the neutral wire and the ground wire is passed through the tail sleeve 3 and the threading housing 2 in sequence, and then the wiring harness is gathered by the clamping sleeve 10 and connected to the connector on the terminal block 7 in sequence. After the clamping sleeve 10 gathers the wiring harness, the rubber bead 9 on the ring 8 on the outer wall of the terminal block 7 is pressed into the assembly groove on the inner wall of the end of the clamping sleeve 10, so as to realize the mutual limitation of the terminal block 7 and the clamping sleeve 10, and avoid the position displacement of the clamping sleeve 10 in the continuous vibration working environment, thereby causing the wiring harness at the terminal block 7 to spread out without restraint. Then, the line will continue to move in the vibration working environment, so that the wiring of the line and the terminal block 7 is continuously pulled, affecting the firmness of the wiring. In this way, the wiring block 7 and the clamping sleeve 10 can be mutually limited and fixed to avoid the wiring harness at the terminal block 7 from spreading out, which affects the firmness of the wiring part of the terminal block 7.

[0042] Before wiring, the wiring holes on the sealing plate 15 and the branching plate 17 are in a mutually misaligned state, which is convenient for dust and moisture protection of the terminal block 7 before the connector is used. When wiring is required, the fastening shaft 16 is used to rotate the branching plate 17 on the sealing plate 15, so that the wiring holes on the sealing plate 15 and the branching plate 17 are aligned one by one. Since the sealing plate 15 and the branching plate 17 are both made of rubber, the rotational friction between the two is very large, which is convenient for limiting the position by friction after rotation, and then the wiring harness is passed through the sealing plate 15 and the wiring holes on the branching plate 17 in turn to avoid the wiring harness from being entangled and heated in the connector. After the wiring is completed, the threaded sleeve 5 in the wiring housing 1 and the end of the threading housing 2 are used The internal thread of the support cavity ring 12 is threadedly connected. During the continuous screwing process, the push rod 14 is pressed to press the piston ring 13 into the internal cavity of the support cavity ring 12, so that the air pressure in the internal cavity of the support cavity ring 12 gradually increases. Then, the airbag ring 18 connected to the internal cavity of the support cavity ring 12 is pressed and expanded, which will compress the line at the wiring hole of the sealing plate 15, so that the sealing inside the connector after wiring is good. In this way, the misalignment of the sealing plate 15 and the branching plate 17 can be used to ensure the sealing of the connector before use, separate the wiring harness during wiring, and avoid heating after the wiring harness is entangled. After the wiring is completed, the airbag ring 18 expands during assembly to ensure the sealing after wiring.

[0043] During assembly after wiring, the air pressure in the internal cavity of the support cavity ring 12 gradually increases, and the high-pressure gas is gradually pressed into the pneumatic telescopic rod 19, so that the pneumatic telescopic rod 19 extends, and the pneumatic telescopic rod 19 drives the top shaft 20 to move upward. Under the upward pull of the top shaft 20, the support arc plates 21 on both sides will deflect upward, and the compensation slide plate 23 slides in the arc groove on the outer wall of the support cavity ring 12 to compensate for the distance. The rotation between the top shaft 20 and the two support arc plates 21 and the rotation between the two compensation rods 22 and the two support arc plates 21 are used to compensate for the angle, so that the two support arcs The plate 21 rotates inward and stands up, forming a triangular structure with the outer wall of the support cavity ring 12. After the compensation slide plate 23 slides to the end, the limit rod 24 will be inserted into the limit groove on the end face of the compensation slide plate 23 for limiting. After the connector is assembled, the support cavity ring 12 will be on the outside of the terminal block 7 to protect the wiring part of the connector. In this way, the triangular structure between the two support arc plates 21 and the support cavity ring 12 can be used to improve the compressive strength of the connector, so that the connector can use conventional materials to achieve a compressive effect close to that of high-strength materials, effectively reducing production costs.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-locking connector, comprising a wiring housing (1) and a wire threading housing (2), characterized in that: The inner end surface of the wiring housing (1) is connected to a wiring seat (7) via a threaded sleeve (5), and the outer side wall of the wiring seat (7) is connected to a wire clamping sleeve (10) via a limiting component that facilitates the limiting of the wiring bundle; The inner wall of the threading housing (2) is connected to a support cavity ring (12) for improving the strength of the connector through a middle solid ring (11); one end of the support cavity ring (12) is connected to a plurality of push rods (14) through a piston ring (13); the other end of the support cavity ring (12) is connected to a wire splitting assembly for preventing the wiring harness from being entangled; multiple groups of support arc plates (21) for supporting the strength of the connector are arranged in an array on the outer walls at both ends of the support cavity ring (12); the interior of the support cavity ring (12) is connected to a push shaft (20) through two pneumatic telescopic rods (19); the outer wall of the push shaft (20) is connected to the inner ends of two adjacent support arc plates (21); and the outer ends of the support arc plates (21) are connected to an adjustment assembly; The inner side wall of the threading housing (2) is fixedly connected to the outer side wall of the support cavity ring (12) through a middle solid ring (11); the inner cavity of one end of the support cavity ring (12) is slidably connected to the side wall of the piston ring (13); the end of the piston ring (13) is fixedly connected to the ends of a plurality of push rods (14); the interior of the support cavity ring (12) is interconnected with the interior of the pneumatic telescopic rod (19); the movable end of the pneumatic telescopic rod (19) is fixedly connected to the end of the push shaft (20); the outer side wall of the push shaft (20) is rotatably connected to the inner side wall of the support arc plate (21); the adjusting The component consists of a compensation rod (22) and a compensation slide (23); the outer wall of the support cavity ring (12) is provided with arc-shaped grooves on both sides of the outer end of the support arc plate (21); the outer end of the support arc plate (21) is rotatably connected to the end face of the compensation slide (23) through the compensation rod (22); the side wall of the compensation slide (23) is slidably connected to the inner wall of the arc-shaped groove; two symmetrical limit rods (24) are fixedly connected to the inner wall of the end of the arc-shaped groove; and limit grooves matching the limit rods (24) are provided on both end faces of the compensation slide (23).

2. A self-locking connector according to claim 1, characterized in that: An inner side wall at one end of the threading housing (2) is provided with an internal thread, and the inner side wall at one end of the threading housing (2) is threadedly connected to the outer side wall of the threaded sleeve (5); the inner end surface of the wiring housing (1) is assembled and fixed to one end of the wiring seat (7) through the threaded sleeve (5), and the other end of the threading housing (2) is fixedly assembled with a tail sleeve (3).

3. A self-locking connector according to claim 1, characterized in that: The inner side wall of the end of the wiring housing (1) is fixedly connected with a support ring (6), and the outer side wall of the threading housing (2) is fixedly connected with a stop ring (4), and the inner diameter of the support ring (6) is greater than the outer diameter of the stop ring (4).

4. A self-locking connector according to claim 1, characterized in that: The limiting assembly is composed of a collar (8) and a plurality of rubber beads (9); the inner side wall of the collar (8) is fixedly connected to the outer side wall of the wiring seat (7); the outer side wall of the collar (8) is fixedly connected to the side wall of the rubber beads (9); and the inner side wall of the end of the clamping sleeve (10) is provided with a plurality of assembly grooves adapted to the rubber beads (9).

5. The self-locking connector according to claim 1, characterized in that: The line splitting assembly is composed of a line splitting plate (17) and a sealing plate (15); the other end of the support cavity ring (12) is fixedly connected to one end of the sealing plate (15); the line splitting plate (17) is rotatably connected to the sealing plate (15) via a fastening shaft (16); and both the line splitting plate (17) and the sealing plate (15) are made of rubber.

6. A self-locking connector according to claim 5, characterized in that: The sealing plate (15) and the line dividing plate (17) are each provided with three wire routing holes, and the inner side walls of the wire routing holes on one end of the sealing plate (15) are each provided with an air bag ring (18), and the air bag ring (18) is interconnected with the interior of the support cavity ring (12) through an air pipe.

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