Anti-loosening connector

Abstract

The present invention provides a anti-loosening connector, which is used to dock with a corresponding connector, and comprises a tube body, a nut sleeve and an elastic clamping ring. A plurality of terminals are disposed through the tube body. The nut sleeve is sleeved outside the tube body, and a thread for screwing the corresponding connector is provided on the nut sleeve. The elastic clamping ring surrounds the nut sleeve and is disposed between the tube body and the nut sleeve. One of the tube body and the nut sleeve has a multi-faceted toroidal surface, the elastic clamping ring is fixedly connected to the other of the tube body and the nut sleeve, and the elastic clamping ring presses against the multi-faceted toroidal surface. The multi-faceted toroidal surface provides multiple abutting points for the elastic clamping ring to prevent the relative rotation and loosening of the tube body and the nut sleeve.

Description

Technical Field

[0001] The present invention relates to a connector, and more particularly to a screw-connected and fixed anti-loosening connector. Background Art

[0002] Generally speaking, in a static use environment, the friction between two docked connectors can prevent loosening. In a dynamic use environment or in a use environment with frequent vibrations, the friction between the two docked connectors alone is obviously insufficient to prevent loosening. Therefore, the two are often locked by a nut and a screw thread to more surely prevent loosening.

[0003] However, in some specific use states, the two connectors may need to allow relative rotation, or the vibration is too frequent and intense, which may cause the nut and the screw thread to gradually rotate relative to each other and become loose. Summary of the Invention

[0004] The purpose of the present invention is to provide a screw-connected and fixed anti-loosening connector.

[0005] To achieve the above purpose, the present invention provides an anti-loosening connector for docking with a corresponding connector, and it includes a tube body, a nut sleeve and an elastic clamping ring. A plurality of terminals are arranged in the tube body. The nut sleeve is sleeved outside the tube body, and a screw thread for screwing the corresponding connector is provided on the nut sleeve. The elastic clamping ring surrounds the nut sleeve and is arranged between the tube body and the nut sleeve. One of the tube body and the nut sleeve has a multi-faceted toroidal surface, the elastic clamping ring is fixedly connected to the other of the tube body and the nut sleeve, and the elastic clamping ring presses against the multi-faceted toroidal surface.

[0006] Optionally, the multi-faceted toroidal surface is formed on the outer wall of the tube body. The multi-faceted toroidal surface includes a plurality of sub-planes arranged in a ring. The elastic clamping ring is fixedly connected to the nut sleeve, and the inner edge of the elastic clamping ring presses against at least one of the sub-planes. The elastic clamping ring forms a straight line segment, and the inner edge of the straight line segment presses against one of the sub-planes.

[0007] Optionally, the multi-faceted toroidal surface is formed on the inner wall of the nut sleeve. The multi-faceted toroidal surface includes a plurality of sub-planes arranged in a ring. The elastic clamping ring is fixedly connected to the tube body, and the outer edge of the elastic clamping ring presses against at least between two adjacent sub-planes. The elastic clamping ring is bent to form an outward convex angle, and the outer edge of the outward convex angle presses against at least between two adjacent sub-planes.

[0008] Optionally, the screw thread is provided on the outer wall of the nut sleeve.

[0009] Optionally, the two ends of the nut sleeve are respectively a screwing end and an operating end. The screw thread is arranged at the screwing end. The operating end is connected to a holding sleeve and the nut sleeve can rotate coaxially relative to the holding sleeve. The operating end and the holding sleeve are sleeved with each other.

[0010] Optionally, stop rings are respectively provided at both ends of the pipe body. One stop ring stops outside the screwed end, and the other stop ring is fixed inside the holding sleeve. The stop ring is formed on the outer side wall of the pipe body or clamped on the outer side wall of the pipe body.

[0011] Optionally, the anti-loosening connector of the present invention further includes a terminal seat. The terminal seat includes a body and a plurality of columns extending from the body and arranged in parallel at intervals. The plurality of terminals are embedded in the body and respectively extend and longitudinally pass through the ends of the corresponding columns. A plurality of ducts corresponding to the plurality of columns are formed in the pipe body. The body is accommodated inside the holding sleeve. Each column is respectively inserted into the corresponding duct and each terminal is respectively exposed inside the pipe body.

[0012] In summary, in the anti-loosening connector of the present invention, the nut sleeve and the pipe body are fixed by the elastic clamping ring pressing against the multi-faceted ring surface. The multi-faceted ring surface can provide multiple abutting points for the elastic clamping ring. When the nut sleeve and the pipe body loosen and rotate relative to each other, the elastic clamping ring can immediately engage the next abutting point and fix the pipe body and the nut sleeve again to prevent the nut sleeve from continuing to rotate relative to the corresponding connector and thereby prevent loosening. Description of the Drawings

[0013] Figure 1 and Figure 2 is a schematic diagram of the usage state of the anti-loosening connector of the invention.

[0014] Figure 3 is a three-dimensional exploded view of the anti-loosening connector according to the first embodiment of the present invention.

[0015] Figure 4 and Figure 5 is a three-dimensional schematic diagram of the anti-loosening connector according to the first embodiment of the present invention.

[0016] Figure 6 is a schematic diagram of the sleeve connection between the pipe body and the nut sleeve in the anti-loosening connector according to the first embodiment of the present invention.

[0017] Figure 7 and Figure 8 is a longitudinal sectional view of the anti-loosening connector according to the preferred embodiment of the present invention.

[0018] Figure 9 is a longitudinal sectional view of the anti-loosening connector according to the preferred embodiment of the present invention.

[0019] Figure 10 is a schematic diagram of the anti-loosening connector according to the second embodiment of the present invention.

[0020] In the figure:

[0021] 10 Corresponding connector; 100 Pipe body; 101 Pipeline; 110 Outer end; 120 Inner end; 130a / 130b Stop ring; 200 Terminal; 300 Nut sleeve; 310 Threaded end; 311 Thread; 320 Operating end; 321 Anti-slip rib; 322 Clamping plane; 410 Elastic clamping ring; 411 Straight segment; 412 Outer convex angle; 420 Multi-angle toroidal surface; 421 Sub-plane; 422 Inner angle; 500 Holding sleeve; 600 Terminal block; 610 Body; 620 Cylinder. Detailed implementation

[0022] Refer to Figures 1 to 5 , the first embodiment of the present invention provides an anti-loosening connector for docking with a corresponding connector 10, and it includes a pipe body 100, a plurality of terminals 200, a nut sleeve 300, an elastic clamping ring 410, a holding sleeve 500 and a terminal block 600.

[0023] In this embodiment, the pipe body 100 is preferably an insulator, but the present invention is not limited to insulators, and it can also be a conductor. A plurality of pipelines 101 corresponding to the plurality of cylinders 620 are formed in the pipe body 100, and each terminal 200 is a metal pin and the terminals 200 are respectively inserted into the pipelines 101. Specifically, the two ends of the pipe body 100 are respectively an outer end 110 and an inner end 120, and each pipeline 101 is arranged parallel to the longitudinal direction of the pipe body 100 and communicates between the outer end 110 and the inner end 120 of the pipe body 100.

[0024] Refer to Figures 3 to 6 , the nut sleeve 300 is sleeved outside the pipe body 100. The two ends of the nut sleeve 300 are respectively a threaded end 310 and an operating end 320. The outer end 110 of the pipe body 100 is inserted into the threaded end 310 of the nut sleeve 300, and the inner end 120 of the pipe body 100 is inserted into the operating end 320 of the nut sleeve 300. A thread 311 is provided on the threaded end 310 of the nut sleeve 300 for screwing the corresponding connector 10. In this embodiment, the thread 311 is preferably provided on the outer wall of the threaded end 310, but depending on the corresponding connector 10, the thread 311 can also be provided on the inner wall of the threaded end 310.

[0025] Refer to Figures 1 to 5, the operating end 320 of the nut sleeve 300 is connected to the holding sleeve 500, and the nut sleeve 300 can rotate coaxially relative to the holding sleeve 500. Specifically, the operating end 320 and the holding sleeve 500 are sleeved with each other. The outer side surface of the operating end 320 is provided with anti-slip ribs 321 for manual pushing or clamping planes 322 for working clamping. Preferably, the clamping planes 322 are a pair and are arranged parallel to each other. Therefore, the user can hold the sleeve 500 and rotate the nut sleeve 300 by rotating the operating end 320 of the nut sleeve 300 manually or by means of a tool such as a wrench, thereby screwing the thread 311 into or out of the corresponding connector 10.

[0026] Refer to Figures 3 to 5 , the terminal block 600 includes a body 610. The body 610 is preferably columnar, and a plurality of columns 620 are formed by extending along the longitudinal direction of the body 610 from one end of the body 610. The body 610 of the terminal block 600 is accommodated within the holding sleeve 500. The plurality of columns 620 are respectively arranged corresponding to the respective pipes 101 of the pipe body 100. Therefore, the plurality of columns 620 are arranged parallel to each other and at intervals. The plurality of terminals 200 are embedded in the body 610 and respectively extend out of the ends of the corresponding columns 620 along the longitudinal direction of the body 610. Each column 620 is respectively inserted into the corresponding pipe 101, and each column 620 is inserted into the respective pipe 101 from the inside of the pipe body 100 so that the respective terminals 200 are respectively exposed within the outer end 110 of the pipe body 100.

[0027] Refer to Figure 3 , one of the pipe body 100 and the nut sleeve 300 has a multi-faceted toroidal surface 420. In this embodiment, the multi-faceted toroidal surface 420 is an outer toroidal surface formed on the outer wall of the pipe body 100, and the multi-faceted toroidal surface 420 includes a plurality of sub-planes 421 arranged in a ring.

[0028] Refer to Figures 7 to 9, the resilient clamping ring 410 is disposed around the nut sleeve 300, and the resilient clamping ring 410 is disposed between the tube body 100 and the nut sleeve 300. The resilient clamping ring 410 is fixedly connected to one of the tube body 100 and the nut sleeve 300, and the resilient clamping ring 410 presses against the polygonal toroidal surface 420. In this embodiment, specifically, the resilient clamping ring 410 is a C-shaped ring formed by bending a metal wire. The two ends of the resilient clamping ring 410 are respectively fixedly connected to the inner wall of the nut sleeve 300, and at least a part of the resilient clamping ring 410 forms a straight line segment 411. In this embodiment, preferably, a pair of opposite and identical straight line segments 411 are provided on the resilient clamping ring 410, but the present invention does not limit the number and position of the straight line segments 411. And the inner edge of the resilient clamping ring 410 presses against at least one of the sub-planes 421. In this embodiment, the inner edges of the pair of straight line segments 411 respectively press against a pair of arranged sub-planes 421. The resilient clamping ring 410 thereby clamps the tube body 100 so that it cannot rotate relative to the nut sleeve 300.

[0029] For the anti-loosening connector of the present invention, a stop ring 130a / 130b is respectively provided at both ends of the tube body 100. One of the stop rings 130a is formed on the outer side wall of the outer end 110 of the tube body 100 and stops outside the threaded end 310 of the nut sleeve 300. The other stop ring 130b is clamped on the outer side wall of the inner end 120 of the tube body 100 and is fixed within the holding sleeve 500. Thereby, the tube body 100 and the holding sleeve 500 are fixedly connected.

[0030] When the anti-loosening connector of the present invention is subjected to an external force or vibration such that the nut sleeve 300 rotates relative to the tube body 100, the straight line segment 411 of the resilient clamping ring 410 slips off from the sub-plane 421 with which it is in contact. As the resilient clamping ring 410 continues to rotate relative to the tube body 100 along with the nut sleeve 300, the straight line segment 411 turns to press against an adjacent another sub-plane 421 and once again fixes the edge tube body and the nut sleeve 300 to prevent the nut sleeve 300 from continuing to rotate relative to the corresponding connector 10 and thereby prevent loosening.

[0031] Refer to Figure 10, the second embodiment of the present invention provides a loosening-preventing connector, whose structure is generally the same as that of the aforementioned first embodiment, and the same parts will not be described again. The details of the differences between this embodiment and the first embodiment are as follows. In this embodiment, the multi-angular toroidal surface 420 is an inner toroidal surface formed on the inner wall of the nut sleeve 300. The multi-angular toroidal surface 420 includes a plurality of sub-planes 421 arranged in a ring. An inner angle 422 is formed between any two adjacent sub-planes 421. The elastic clamping ring 410 is a C-shaped ring formed by bending a metal wire. The two ends of the elastic clamping ring 410 are respectively fixedly connected to the outer wall of the tube body 100. The elastic clamping ring 410 is bent to form an outward convex angle 412, and the outer edge of the outward convex angle 412 abuts against any inner angle 422 to fix the tube body 100 and the nut sleeve 300. When the loosening-preventing connector of the present invention is subjected to external force or vibration, causing the nut sleeve 300 to rotate relative to the tube body 100, the outward convex angle 412 of the elastic clamping ring 410 slips out of the inner angle 422 with which it abuts. As the nut sleeve 300 continues to rotate relative to the tube body 100, the outward convex angle 412 snaps into another adjacent inner angle 422 to fix the edge tube body and the nut sleeve 300 again, preventing the nut sleeve 300 from continuing to rotate relative to the corresponding connector 10 and thereby preventing loosening.

[0032] In the loosening-preventing connector of the present invention, the nut sleeve 300 and the tube body 100 are fixed by the elastic clamping ring 410 pressing against the multi-angular toroidal surface 420. The multi-angular toroidal surface 420 can provide multiple abutting points for the elastic clamping ring 410. When the nut sleeve 300 and the tube body 100 become loose and rotate relative to each other, the elastic clamping ring 410 can immediately snap onto the next abutting point to fix the edge tube body and the nut sleeve 300 again, preventing the nut sleeve 300 from continuing to rotate relative to the corresponding connector 10 and thereby preventing loosening.

[0033] The above-described embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A loosening-proof connector for docking with a corresponding connector, characterized in that, Comprising: A tube body, through which a plurality of terminals are inserted; A nut sleeve, sleeved outside the tube body, and a thread for screwing the corresponding connector is provided on the nut sleeve; and An elastic clamping ring, surrounding inside the nut sleeve and disposed between the tube body and the nut sleeve. Among them, one of the tube body and the nut sleeve has a polygonal toroidal surface, the elastic clamping ring is fixedly connected to the other of the tube body and the nut sleeve, and the elastic clamping ring presses against the polygonal toroidal surface; Both ends of the nut sleeve are respectively a screwing end and an operating end. The thread is provided on the screwing end. The operating end is connected to a holding sleeve and the nut sleeve can rotate coaxially relative to the holding sleeve; Stop rings are respectively provided at both ends of the tube body. One of the stop rings stops outside the screwing end, and the other stop ring is fixed inside the holding sleeve.

2. The anti-loosening connector according to claim 1, wherein The polygonal toroidal surface is formed on the outer wall of the tube body. The polygonal toroidal surface includes a plurality of sub-planes arranged in a ring. The elastic clamping ring is fixedly connected to the nut sleeve, and the inner edge of the elastic clamping ring presses against at least one of the sub-planes.

3. The anti-loosening connector according to claim 2, wherein, The elastic clamping ring forms a straight line segment, and the inner edge of the straight line segment presses against one of the sub-planes.

4. The anti-loosening connector according to claim 1, wherein, The polygonal toroidal surface is formed on the inner wall of the nut sleeve. The polygonal toroidal surface includes a plurality of sub-planes arranged in a ring. The elastic clamping ring is fixedly connected to the tube body, and the outer edge of the elastic clamping ring presses against between at least two adjacent sub-planes.

5. The anti-loosening connector according to claim 4, characterized in that, The elastic clamping ring is bent to form an outward convex angle, and the outer edge of the outward convex angle presses against between at least two adjacent sub-planes.

6. The anti-loosening connector according to claim 1, wherein The thread is provided on the outer wall of the nut sleeve.

7. The anti-loosening connector according to claim 1, wherein The operating end and the holding sleeve are sleeved with each other.

8. The anti-loosening connector according to claim 1, wherein, The stop ring is formed on the outer side wall of the tube body.

9. The anti-loosening connector according to claim 1, characterized in that, The stop ring is clamped on the outer side wall of the tube body.

10. The anti-loosening connector according to claim 1 further comprises a terminal base, characterized in that, The terminal block includes a body and a plurality of columns extending from the body and arranged in parallel at intervals. The plurality of terminals are embedded in the body and respectively extend and longitudinally pass through the ends of the corresponding columns. A plurality of channels corresponding to the plurality of columns are formed in the tube body. The body is accommodated inside the holding sleeve. Each column is respectively inserted into the corresponding channel and each terminal is respectively exposed inside the tube body.

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