Screw lock device

Abstract

The present invention discloses a spiral locking device, including a spiral body and a spiral fixing cap. The spiral body is fixedly arranged on an electric plug connector or an electric plug connector socket, and is provided with a snap-fitting groove. The spiral fixing cap can be rotatably plugged into the spiral body, and is provided with a locking portion that can be locked into the snap-fitting groove. The snap-fitting groove includes a strip-shaped groove body obliquely arranged along the side wall of the spiral body, one end of the strip-shaped groove body is provided with a groove body opening opened along the edge of the spiral body, and the other end is provided with a locking structure for locking the locking portion. The spiral locking device of the present invention realizes the rapid disassembly and assembly of cable connections, solves the problem of complex and time-consuming installation of threaded fastening structures, and greatly saves installation costs.

Description

Technical Field

[0001] The invention relates to the technical field of cable connection equipment, and in particular to a spiral locking device suitable for an electric plug connector and an electric plug connector female socket. Background Art

[0002] The electrical plug connection is achieved by the interaction of the electrical plug connector and the electrical plug connector socket. It can be used to connect a cable to an electrical or electronic device, or to connect two cables to each other. When connecting a cable to an electrical plug connector or an electrical plug connector socket, an external threaded connection portion is usually provided on the electrical plug connector or the electrical plug connector socket, and then a wire clamping device with a cable fixed thereon is screwed and locked onto the external threaded connection portion. However, the existing connection structure is relatively complex, and the thread tightening time is long, the construction efficiency is relatively low, and the installation or removal of the wire clamping device is relatively cumbersome, which easily leads to an increase in labor costs. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a spiral locking device suitable for an electrical plug connector and an electrical plug connector socket, which realizes the rapid disassembly and assembly of the cable connection, solves the problem of complex and time-consuming installation of the threaded fastening structure, and greatly saves the installation cost.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a spiral locking device, including a spiral body and a spiral fixing cap, wherein the spiral body is fixedly arranged on an electrical plug connector or an electrical plug connector socket, and is provided with a snap-fitting groove. The spiral fixing cap can be rotatably plugged into the spiral body, and is provided with a locking portion that can be locked into the snap-fitting groove. The snap-fitting groove includes a strip-shaped groove body obliquely arranged along the side wall of the spiral body, one end of the strip-shaped groove body is provided with a groove body opening opened along the edge of the spiral body, and the other end is provided with a locking structure for locking the locking portion.

[0005] The beneficial effect of the present invention is that during installation, the spiral fixing cap is rotated and plugged into the spiral body, and the fast disassembly and assembly of the spiral fixing cap and the spiral body is realized through the arrangement of the locking portion and the snap-fitting groove, thereby solving the problem of complex and time-consuming installation of the threaded fastening structure in the prior art, and greatly saving the installation cost.

[0006] Furthermore, the locking structure includes a revolving groove connected to the strip groove body, and a clamping point protrusion for clamping the locking part is provided at the intersection of the revolving groove and the strip groove body. The locking part can be locked in the revolving groove by the clamping point protrusion.

[0007] Furthermore, a sloped retaining surface that can abut against the locking part is also provided in the rotary groove. The low point of the sloped retaining surface is located at the intersection of the rotary groove and the strip-shaped groove body, and the high point is located in the rotary groove. By setting the positions of the low point and the high point of the sloped retaining surface, the locking part is gradually tightened when entering the rotary groove (the gap between the locking part and the sloped retaining surface gradually decreases), and is gradually loosened when leaving the rotary groove (the gap between the locking part and the sloped retaining surface gradually increases), thereby making the locking part more secure when fastened in the rotary groove and easier to unfasten.

[0008] Furthermore, the spiral fixing cap is a hollow shell structure, one end of which is a wire inlet and the other end is a wire outlet. The locking portion is provided at one end of the wire outlet.

[0009] Furthermore, the inner wall of the end of the spiral fixing cap close to the wire inlet is provided with a shrinking arc surface which gradually shrinks radially from away from the wire inlet to close to the wire inlet. The setting of the shrinking arc surface facilitates the cooperation with the wire harnessing mechanism to clamp the cable.

[0010] Furthermore, a guide-giving inclined surface is provided on the inner wall of one end of the spiral fixing cap close to the wire outlet, and an incoming wire guiding inclined surface matching the guide-giving inclined surface is provided on the outer wall of the spiral body. The setting of the guide-giving inclined surface and the incoming wire guiding inclined surface makes the plug connection between the spiral fixing cap and the spiral body smoother.

[0011] Furthermore, the outer wall of the spiral fixing cap is evenly distributed with a plurality of anti-skid grooves for facilitating the rotation and insertion of the spiral fixing cap onto the spiral body. The provision of the anti-skid grooves can facilitate workers to apply force to rotate the spiral fixing cap and prevent slipping during rotation.

[0012] Furthermore, a wiring harness mechanism can be detachably nested on the spiral fixing cap, and the wiring harness mechanism includes an annular base, and one side of the annular base is provided with a plurality of wiring harness posts distributed in a circular array, and the interiors of the plurality of wiring harness posts together form a wiring harness space for accommodating cables, and the inner side of the wiring harness post is also provided with a wiring harness buckle.

[0013] Furthermore, a clearance notch is provided on the outer wall of the annular base, a slide groove is provided on the outer side of the cable tie post for the lock part to move, and at least one of the slide grooves is connected to the clearance notch. The arrangement of the clearance notch and the slide groove can make way for the lock part when the cable tie mechanism is embedded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An exploded view of an embodiment of the present invention;

[0015] Figure 2A schematic diagram of the structure of a curved plate according to an embodiment of the present invention;

[0016] Figure 3 It is a schematic structural diagram of a spiral fixing cap according to an embodiment of the present invention;

[0017] Figure 4 is a schematic cross-sectional view of a spiral fixing cap according to an embodiment of the present invention;

[0018] Figure 5 is a schematic structural diagram of a wire harness mechanism according to an embodiment of the present invention;

[0019] Figure 6 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector in a 180° wiring direction;

[0020] Figure 7 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector in a 180° wiring direction;

[0021] Figure 8 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector with a 90° wiring direction;

[0022] Fig. 9 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector with a 90° wiring direction;

[0023] Fig.10 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector with a 45° wiring direction;

[0024] Fig.11 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on a female socket of an electrical plug connector with a 45° wiring direction;

[0025] Fig.12 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 180° wiring direction;

[0026] Fig.13 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 180° wiring direction;

[0027] Fig.14 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 90° wiring direction;

[0028] Fig.15 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 90° wiring direction;

[0029] Fig.16 It is a structural schematic diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 45° wiring direction;

[0030] Fig.17 It is a schematic structural diagram of a spiral locking device according to an embodiment of the present invention assembled on an electrical plug connector with a 45° wiring direction.

[0031] In the figure:

[0032] 1-Spiral body; 11-arc plate; 111-inlet guide slope; 112-alignment mark; 12-strip groove; 121-groove opening; 13-rotating groove; 131-card point protrusion; 14-slope retaining surface; 2-spiral fixing cap; 21-locking part; 22-inlet port; 23-outlet port; 25-contraction arc surface; 26-guide yield slope; 27-anti-slip groove; 28-card column position mark; 3-wire harness mechanism; 31-annular base; 311-yield gap; 32-wire harness column; 321-wire harness undercut; 322-slide groove; 4-electrical plug connector; 5-electrical plug connection socket. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0034] Example

[0035] See attached Figure 1 As shown, a spiral locking device of the present invention comprises a spiral body 1, a spiral fixing cap 2, and a wire harness mechanism 3. The spiral body 1 is fixedly arranged on an electrical plug connector 4 or an electrical plug connector female socket 5, and is provided with a buckle groove. The spiral fixing cap 2 is detachably connected to the wire harness mechanism 3 and can be rotatably plugged onto the spiral body 1. The spiral fixing cap 2 is also provided with a locking portion 21 that can be locked into the buckle groove.

[0036] In this embodiment, see the attached Figure 1-2 As shown, the spiral body 1 is composed of a pair of symmetrically arranged arc plates 11 that surround the ring structure. One end of the arc plate 11 is welded and fixed on the electrical plug connector 4 or the electrical plug connector female socket 5, and the other end is used for the spiral fixing cap 2 to rotate the plug.

[0037] There are two buckling grooves, which are respectively arranged on a pair of the arc-shaped plates 11. Specifically, the buckling groove includes a strip-shaped groove body 12 obliquely arranged along the side wall of the arc-shaped plate 11, one end of the strip-shaped groove body 12 is provided with a groove body opening 121 opened along the end edge of the arc-shaped plate 11, and the other end is provided with a locking structure for locking the locking part 21. In order to facilitate the locking part 21 to enter the strip-shaped groove body 12 along the groove body opening 121, the R angle of the groove body opening 121 is set to be greater than 90°.

[0038] The end of the arc plate 11 close to the slot opening 121 is also provided with a wire entry guide inclined surface 111 for facilitating the insertion of the screw fixing cap 2 .

[0039] The locking structure includes a revolving groove 13 connected to the strip groove 12, and a clamping point protrusion 131 for clamping the locking portion 21 is provided at the intersection of the revolving groove 13 and the strip groove 12. A sloped retaining surface 14 that can abut against the locking portion 21 is also provided in the revolving groove 13. The low point of the sloped retaining surface 14 is located at the intersection of the revolving groove 13 and the strip groove 12, and the high point is located in the revolving groove 13.

[0040] During installation, the locking portion 21 enters into the strip groove body 12 through the groove body opening 121, and the spiral fixing cap 2 is rotated along the inclined direction of the strip groove body 12, so that the locking portion 21 moves along the strip groove body 12 and enters into the rotary groove 13 through the card point protrusion 131. At this time, due to the limiting effect of the card point protrusion 13, the locking portion 21 can be locked in the rotary groove 13; when disassembly is required, it is only necessary to rotate the spiral fixing cap 2 in the opposite direction, and the locking portion 21 can be screwed out of the locking groove along the card point protrusion 131, the strip groove body 12, and the groove body opening 121, thereby realizing the disassembly of the spiral fixing cap 2 and the spiral body 1. In the process of the locking part 21 entering the rotating groove 13 from the stuck point protrusion 131, the setting of the sloped retaining surface 14 enables the locking part 21 to rest on the sloped retaining surface 14, and due to the setting of the low point and the high point of the sloped retaining surface 14, the locking part 21 is in a gradually tightened state when entering the rotating groove 13 (the gap between the locking part 21 and the sloped retaining surface 14 gradually decreases), and is in a gradually loosened state when leaving the rotating groove 13 (the gap between the locking part 21 and the sloped retaining surface 14 gradually increases), thereby making the locking part 21 more secure when fastened and easier to unlock.

[0041] In addition, in order to make the locking portion 21 rotate in or out of the strip-shaped slot body 12 more smoothly, both side edges of the strip-shaped slot body 12 are ground and polished to ensure their smoothness.

[0042] In this embodiment, see the attached Figure 3-4As shown, the spiral fixing cap 2 is a hollow shell structure, one end of which is a wire inlet 22, and the other end is a wire outlet 23. The locking portion 21 is symmetrically arranged at one end of the wire outlet 23, and the locking portion 21 is a cylindrical structure.

[0043] The inner wall of the end of the spiral fixing cap 2 close to the inlet port 22 is provided with a shrinking arc surface 25 that gradually shrinks radially from away from the inlet port 22 to close to the inlet port 22. The inner wall of the end of the spiral fixing cap 2 close to the outlet port 23 is provided with a guide and yielding inclined surface 26 that matches the inlet guide inclined surface 111. The outer wall of the spiral fixing cap 2 is also evenly distributed with a plurality of anti-skid grooves 27 that facilitate the rotation and plugging of the spiral fixing cap 2 onto the spiral body 1. The setting of the shrinking arc surface 25 facilitates the coordination with the cable bundle mechanism 3 to clamp the cable, and the setting of the guide and yielding inclined surface 26 facilitates the sleeve thereof onto the inlet guide inclined surface 111, so that the plug connection between the spiral fixing cap 2 and the spiral body 1 is smoother; the setting of the anti-skid groove 27 prevents the worker from slipping when performing the rotation and plugging action.

[0044] The outer wall of the end of the spiral fixing cap 2 close to the outlet 23 is also provided with a post position mark 28 for marking the position of the post, and the arc plate 11 is provided with an alignment mark 112 for aligning the post position mark 28, and the alignment mark 112 is located directly above the slot opening 121. When the spiral fixing cap 2 is plugged into the spiral body 1, the post position mark 28 is aligned with the alignment mark 112, so that the post can enter the slot opening 121 more accurately.

[0045] In this embodiment, see the attached Figure 5 As shown, the cable harness mechanism 3 includes an annular base 31, and one side of the annular base 31 is provided with four cable harness posts 32 distributed in a circular array, and the interiors of the four cable harness posts 32 together form a cable harness space for accommodating cables; the end of the cable harness post 32 away from the annular base 31 is a free end, which can shrink or expand under the action of external force, and the inner side of the free end is provided with a cable harness buckle 321.

[0046] When the wiring harness mechanism 3 is nested, the free ends of the four wiring harness posts 32 are embedded into the spiral fixing cap 2 from one end of the wiring outlet 23 of the spiral fixing cap 2, and force is applied to move the wiring harness posts 32 toward the wiring inlet 22. When the free ends of the wiring harness posts 32 move to the contraction arc surface 25, due to the effect of the contraction arc surface 25, the free ends of the wiring harness posts 32 can be in an inwardly contracted state, thereby making the wiring harness space close to the wiring inlet 22 move closer to the middle, thereby clamping the cable.

[0047] In order to avoid the clamping column during the nesting process, a pair of clearance notches 311 for the clamping column to slide are provided on the outer wall of the annular base 31, and a slide groove 322 for the clamping column to slide is provided on the outer wall of the cable tie column 32. The two slide grooves 322 on the cable tie column 32 arranged at intervals are connected to the clearance notches 311 in a one-to-one correspondence, so as to form a clearance channel for the clamping column to make way during the nesting process.

[0048] The assembly process of this embodiment is as follows:

[0049] First, the free end of the wiring post 32 is embedded into the spiral fixing cap 2 from one end of the wire outlet 23 of the spiral fixing cap 2, and the clearance channel is aligned with the clamping post; external force is applied to move the wiring harness mechanism 3 toward the wire inlet 22, and the clamping post can move along the clearance channel until the annular base 31 completely enters the spiral fixing cap 2 and the clamping post moves out of the clearance channel; the annular base 31 is rotated so that the annular base 31 rotates a certain angle along the spiral fixing cap 2 so that the clamping post and the clearance channel are staggered by a certain distance. This operation is to prevent the wiring harness mechanism 3 from moving out of the spiral fixing cap 2 in the reverse direction; one end of the wire outlet 23 of the spiral fixing cap 2 is inserted into a pair of arc plates 11, and the clamping post position marks 28 on the spiral fixing cap 2 are aligned one by one with the alignment marks 112 on the arc plates 11. At this time, the clamping post can be moved along the slot opening 121 enters into the strip groove body 12; the spiral fixing cap 2 is rotated along the inclination direction of the strip groove body 12, so that the card column can move along the strip groove body 12. At this time, the arc plate 11 can abut against the annular base 31 and can push the annular base 31 to move in the direction of the wire inlet 22; as the card column moves in the strip groove body 12, the card column can enter the rotary groove 13 through the card point protrusion 131, and the free end of the wiring column 32 can move to the contraction arc surface 25. Due to the effect of the contraction arc surface 25, the free end of the wiring column 32 is in an inwardly contracted state, thereby making the wiring space close to the direction of the wire inlet 22 move closer to the middle; when the card column is locked in the rotary groove 13, the free end of the wiring column 32 moves to be flush with the direction of the wire inlet 22. At this time, the spiral locking device is assembled.

[0050] It should be noted that the electric plug connector 4 and the electric plug connector 5 of the present embodiment are both prior art. According to different cable routing directions, the existing electric plug connectors are divided into electric plug connectors with 180° routing directions, electric plug connectors with 90° routing directions, and electric plug connectors with 45° routing directions. The existing electric plug connector female sockets are divided into electric plug connector female sockets with 180° routing directions, electric plug connector female sockets with 90° routing directions, and electric plug connector female sockets with 45° routing directions. Figure 6-7 The invention shows an assembly structure in which the spiral locking device of the present invention is applied to the female socket of an electrical plug connector with a 180° wiring direction. Figure 8-9The invention shows an assembly structure in which the spiral locking device of the present invention is applied to the female socket of an electrical plug connector with a 90° wiring direction. Figure 10-11 The invention shows an assembly structure in which the spiral locking device of the present invention is applied to the female socket of an electrical plug connector with a 45° wiring direction. Figure 12-13 The invention shows an assembly structure in which the spiral locking device of the invention is applied to an electrical plug connector with a 180° wiring direction. Figure 14-15 The invention shows an assembly structure in which the spiral locking device of the invention is applied to an electrical plug connector with a 90° wiring direction. Figure 16-17 The invention shows an assembly structure in which the spiral locking device of the invention is applied to an electrical plug connector with a 45° wiring direction.

[0051] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A spiral lock device, characterized in that: The invention comprises a spiral body (1) and a spiral fixing cap (2), wherein the spiral body (1) is fixedly arranged on an electrical plug connector (4) or an electrical plug connector female seat (5), and is provided with a snap-fitting groove; the spiral fixing cap (2) can be rotatably plugged into the spiral body (1), and is provided with a locking portion (21) that can be locked into the snap-fitting groove; the snap-fitting groove comprises a strip-shaped groove body (12) obliquely arranged along the side wall of the spiral body (1), one end of the strip-shaped groove body (12) is provided with a groove body opening (121) opened along the edge of the spiral body (1), and the other end is provided with a locking structure for locking the locking portion (21); The R angle of the slot opening (121) is set to be greater than 90°; the locking structure comprises a revolving slot (13) connected to the strip-shaped slot (12); a clamping point protrusion (131) for clamping the locking portion (21) is provided at the intersection of the revolving slot (13) and the strip-shaped slot (12); a sloped retaining surface (14) capable of abutting against the locking portion (21) is also provided in the revolving slot (13); the low point of the sloped retaining surface (14) is located at the intersection of the revolving slot (13) and the strip-shaped slot (12), and the high point is located in the revolving slot (13).

2. The spiral lock device according to claim 1, characterized in that: The spiral fixing cap (2) is a hollow shell structure, one end of which is a wire inlet (22) and the other end of which is a wire outlet (23); one end of the wire outlet (23) is provided with the locking portion (21).

3. The spiral lock device according to claim 2, characterized in that: The inner wall of one end of the spiral fixing cap (2) close to the wire inlet (22) is provided with a shrinking arc surface (25) which gradually shrinks radially from away from the wire inlet (22) to closer to the wire inlet (22).

4. The spiral lock device according to claim 2, characterized in that: A guiding inclined surface (26) is provided on the inner wall of one end of the spiral fixing cap (2) close to the wire outlet (23), and a wire inlet guiding inclined surface (111) matching the guiding inclined surface (26) is provided on the outer wall of the spiral body (1).

5. The spiral lock device according to claim 2, characterized in that: The outer wall of the spiral fixing cap (2) is also evenly distributed with a plurality of anti-slip grooves (27) for facilitating the rotational insertion of the spiral fixing cap (2) onto the spiral body (1).

6. The spiral lock device according to claim 2, characterized in that: A wiring harness mechanism (3) is also detachably nested on the spiral fixing cap (2), and the wiring harness mechanism (3) comprises an annular base (31), one side of the annular base (31) is provided with a plurality of wiring harness posts (32) distributed in a circumferential array, the interiors of the plurality of wiring harness posts (32) together form a wiring harness space for accommodating cables; the inner side of the wiring harness post (32) is also provided with a wiring harness undercut (321).

7. The spiral lock device according to claim 6, characterized in that: A clearance notch (311) is provided on the outer wall of the annular base (31), and a plurality of cable tie posts (32) are each provided with a slide groove (322) on the outer side, and at least one of the slide grooves (322) is connected to the clearance notch (311).

Images