WO2016037515A1

WO2016037515A1 - Cable quick plug

Info

Publication number: WO2016037515A1
Application number: PCT/CN2015/086153
Authority: WO
Inventors: 袁忠杰
Original assignee: 袁忠杰
Priority date: 2014-09-12
Filing date: 2015-08-05
Publication date: 2016-03-17
Also published as: CN204179293U

Abstract

Provided is a cable quick plug, comprising a hollow plug body (10) and an elastic element (20); one end of the elastic element is a fixed end having a restrictive connection with the plug body, and the other end of the elastic element is a plug-in end provided with a clamping section forming an elastic connection with a socket (30); when a plug is inserted in the socket, the clamping section of the plug pulls the elastic element to generate an axial tensioning force; since the elastic element has a large range of elastic operation, the axial tensioning force satisfies a design standard even if a certain unexpected change occurs in an operation process, thus ensuring the contact stability and reliability of the electrified surfaces of the plug and the socket.

Description

Cable quick plug

Technical field

The utility model relates to the field of cable connection, in particular to a cable quick plug.

Background technique

In the prior art, the quick connection scheme of the welding cable and the welding cable and the welding cable and the welding device is matched with the plug and the socket, and the socket is provided with a guiding groove on the inner wall of the jack along the axial direction of the jack, and the guiding groove The end has a spiral groove along the inner ring surface of the socket. The front end of the plug is provided with a protruding chuck, and the plug is inserted along the socket guide slot when the connection is made, and then the plug is rotated to rotate the chuck on the plug along the spiral slot, and the end face of the plug is in contact with the end face of the socket by screwing.

The above structure has the following disadvantages: since the plug and the socket are both integral rigid body structures, there is only an operation stroke of 1 to 2.5 mm between the tightening and the loosening during use, and in actual production work, due to handling, vibration, Collision, thermal expansion and contraction, cable pull and many other factors can easily make the plug of the plug loose from the card slot, causing virtual connection, resulting in unstable current on the power-on surface. When the large current passes, the plug socket will heat up. , burnt the connector, and there is a danger of fire.

Utility model content

The purpose of the utility model is to overcome the above deficiencies of the prior art and to provide a cable quick plug. The plug is provided with an elastic member which is closely matched with the socket. When the plug is inserted into the socket, the engaging portion of the plug pulls the elastic member to form an axial tensioning force, because the flexible working interval of the elastic member is wide, even during work. The relative rotation between the plug and the socket to cause a certain relative rotation can still make the axial tensioning force meet the design index, and ensure the stability and reliability of the contact between the plug and the socket.

In order to achieve the above object, the utility model adopts the following technical solutions:

A cable quick plug, the quick plug includes a plug body and an elastic member; one end of the elastic member is a fixed end, the fixed end of the elastic member is restrictively connected to the plug body, and the other end of the elastic member is a plug end The plug end of the elastic element is provided with a snap-fit section that is elastically connected to the socket.

As a preferred embodiment of the present invention, the elastic member is restrictively coupled to the plug body by a fastening member.

As another preferred embodiment of the present invention, the fixed end of the elastic member extends into the inner side of the plug body and is restrictively connected to the plug body, and the plug end of the elastic member protrudes outside the plug body.

Preferably, the elastic element is a coil spring and the engaging portion on the elastic element is a protruding chuck provided on the spring wire, or is disposed at the end of the insertion end of the coil spring to extend outside the spring winding area Overhanging card head.

Preferably, the insertion end of the elastic member is bent.

Further, the center line of the bent portion of the elastic member is on the same plane.

Preferably, the fixed end of the elastic element forms an interference fit with the plug body.

Preferably, the overhanging head of the coil spring has a straight arm shape or a raised shape.

Further, the length of the raised overhanging chuck matches the depth of the card slot in the socket.

Preferably, a step is provided on an inner side of one end of the plug body connected to the coil spring, and an end portion of the fixed end of the coil spring is engaged at the step.

The principle and beneficial effects of the utility model are as follows:

1) In the present invention, an elastic member is provided, and the elastic member may be a spring or a bent member formed by bending a metal material, that is, the elastic member is essentially a storage capable of generating elastic deformation. Capable parts.

Taking a plug with a spring as an example, one end of the spring is restrictively connected to the plug body, and the other end is lifted up to be an overhanging chuck. When connecting, the spring end of the plug is inserted into the socket, and the plug is rotated to make the bullet The overhanging chuck of the spring rotates along the spiral slot on the socket, and the tension spring forms an axial tensioning force, so that the end surface of the plug and the end surface of the socket are attached by the tensioning force. Due to the wide elastic working range of the spring, even if the plug and the socket are externally affected during operation, the spring's overhanging chuck and the slot are in a certain change, and the axial tension of the spring can still be satisfied. The design is designed so that the plug and socket are continuously and firmly bonded together, ensuring the stability and reliability of the contact of the energized face.

It should be noted that the restrictive connection in the present invention means that the interconnected components should be tightly coupled together.

In addition, the card slot of the socket is spiral with a certain stroke. However, the elastic member of the utility model can fully utilize the entire stroke of the socket card slot under the action of elastic deformation, that is, in the entire stroke of the socket card slot, the engaging portion of the elastic member can be elastically deformed. Tightly snapped into the slot of the socket.

2) In the utility model, the spring and the plug body are fixed in various manners, for example, they may be restrictedly connected by using a tensioning manner, or may be restrictedly connected by a fastening component, and the utility model preferably adopts The way to secure the fit. The interference fit not only facilitates the processing, but also ensures the firmness of the bond between the spring and the plug body.

3) In the present invention, the overhanging chuck of the spring can be arranged in a straight arm shape or in a raised shape. The slanted overhanging section can produce greater deformation, so that the slanted overhanging section can achieve a better fastening effect.

DRAWINGS

1 and 2 are schematic views showing the structure of the first type of quick plug.

3a, 3b, and 3c are schematic plan views of the top view of Fig. 2.

4 is a cross-sectional structural view of the quick plug shown in FIG. 2.

Figure 5 is a schematic view showing the working state of the quick plug and the socket shown in Figure 2 when they are put together.

Figures 6, 7, 8, and 9 are schematic views of the fixed structure of the elastic member.

FIG. 10 is a schematic view showing the structure of a three-dimensional state of the second quick plug.

Figure 11 is a cross-sectional view taken along line A-A of Figure 9.

12 and 13 are schematic views showing the structure of a three-dimensional state of the third quick plug.

Figure 14 is a cross-sectional view taken along line A-A of Figure 13;

Figure 15 is a schematic view showing the structure of a three-dimensional state of the fourth quick plug.

Figure 16 is a cross-sectional view taken along line A-A of Figure 15;

Figure 17 is a schematic view showing the structure of a cylindrical coil spring.

Figure 18 is a top plan view of the spring of Figure 17.

detailed description

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. It should be noted that the embodiments described are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art will be able to use the present invention without departing from the spirit of the present invention. Various modifications and improvements of the novel technical solutions are intended to fall within the scope of the invention as defined in the appended claims.

Example 1

As shown in FIG. 1 to FIG. 4, the quick plug in this embodiment includes a hollow plug body 10 and an elastic member 20. The elastic member 20 in this embodiment is a cylindrical coil spring, and the plug body 10 is provided. A threaded hole 11 for pressing the cable is provided, and a step 12 is provided in the inner cavity of the plug body 10 on the side where the energizing surface 13 is provided; one end of the cylindrical coil spring is a fixed end, and the fixed end extends into the plug body 10 The terminal end is connected to the plug body 10 in a restrictive manner. The other end of the cylindrical coil spring disposed outside the plug body 10, that is, the plug end end portion, is provided with a latching portion 21 extending to the outside of the spring winding region.

In this embodiment, the fixed end of the cylindrical coil spring and the plug body 10 form an interference fit.

As shown in FIG. 3a, the engaging portion 21 of the plug end of the cylindrical coil spring has a straight arm shape; as shown in FIG. 3b, the overhanging end of the plug end of the cylindrical coil spring is tilted and tilted. The length of the lifting overhang is 2 mm; as shown in Fig. 3c, the end of the overhanging end of the plug end of the cylindrical coil spring is inclined.

Of course, as shown in FIGS. 17 and 18, the engaging portion 21 of the spring insertion end may also be a protruding chuck provided on the spring wire. When the plug end of the cylindrical coil spring is inserted into the card slot in the socket, the protruding clip of the spring plug end shown in Figs. 16 and 17 is elastically engaged in the card slot.

As shown in FIG. 4, the fixed end end 22 of the cylindrical coil spring is engaged at the step 12.

As shown in Figure 5, when working, insert the cable into the end of the quick plug with the threaded hole 11, and then insert or screw the compression screw into the threaded hole 11, and tighten the cable with the quick plug by the compression screw. The ground is connected together; then the fixed end of the cylindrical coil spring of the quick plug is inserted into the socket 30, and then the quick plug is rotated to rotate the snap segment 21 of the cylindrical coil spring along the tapered slot 31 of the socket 30, thereby The snap-in section 21 of the coil spring is deformed and abuts against the wall surface of the slot 31 of the socket 30, and finally the energizing surface 13 of the quick plug and the energizing surface of the socket 30 are tightly fitted by screwing.

There are other various implementations when the cylindrical coil spring is fixed to the plug body 10. For example, as shown in FIG. 6, a columnar flange segment 14 is provided at one end of the energizing surface 13 of the plug body 10, and then The fixed end of the cylindrical coil spring is fixed to the flange portion 14 of the plug body 10 by the tightening process; or as shown in FIG. 9, on the columnar flange portion 14 at one end of the energizing surface 13 of the plug body 10. An outer spiral is provided, and the cylindrical coil spring is screwed and mounted on the columnar flange portion 14 of the plug body 10 during installation; a groove may be provided at one end of the energizing surface 13 of the plug body 10, and then at one end of the energizing surface 13 An inner spiral is disposed in the groove, and then the cylindrical spiral spring is screwed into the plug body 10 along the groove; of course, as shown in FIGS. 7 and 8, a groove is provided at one end of the energizing surface 13 of the plug body 10. Opening a hole in the groove, so that the fastening member 40 passes through the fixed end of the cylindrical coil spring to fix the fixed end of the cylindrical coil spring with the plug body 10, and the fastening member 40 can adopt a screw; The end of the plug body 10 is perforated, and a spiral groove is formed in the end opening, and then the fixed end of the cylindrical coil spring is screwed and fixed to the end of the plug body 10.

Example 2

As shown in FIG. 10, the elastic member 20 in this embodiment is still a cylindrical coil spring, but the respective coils in the cylindrical coil spring in Embodiment 1 are only bonded together, and in the cylindrical coil spring in this embodiment, There is a gap between each coil.

As shown in FIG. 11, when the cylindrical coil spring in the embodiment is fixed to the plug body 10, in addition to the various fixing methods in the first embodiment, as shown in FIG. 11, the plug body 10 can be used. The peripheral side of the end portion on the side where the energizing surface 13 is provided is provided with a mounting hole 15 which may be a pin hole or a threaded hole, and then the cylindrical coil spring and the plug body 10 are passed through the mounting hole 15 with a pin or a screw. Just fix it together.

Example 3

As shown in FIGS. 12 to 14, the elastic member 20 in the present embodiment is a bent member formed by bending a metal material; the elastic member 20 is provided with two bent portions 23 (of course, the bent portion 23 can also be provided For one or three or even more, the two bent portions 23 abut against the inner wall of the socket 30 during installation to serve as a support and guide.

The center line of the bent portion 23 of the bent elastic member 20 in this embodiment is on the same plane, that is, the elastic member 20 in this embodiment is a flat bent member.

Example 4

As shown in FIGS. 15-16, the elastic member 20 in this embodiment is also a bent member formed by bending a metal material; the elastic member 20 is provided with two bent portions 23, and the two bent portions 23 are When installed, the inner wall of the socket 30 abuts to support and guide.

The bent elastic member 20 in this embodiment has a spiral shape, and the center lines of the two bent portions 23 are not in the same plane, that is, the elastic member 20 in this embodiment is a bent member having a spatial spiral structure.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made in the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A cable quick plug, characterized in that: the quick plug comprises a plug body (10) and an elastic member (20); one end of the elastic member (20) is a fixed end, the fixed end and the plug body (10) Restrictive connection, the other end of the elastic member (20) is a plug end, and the plug end is provided with a snap portion (21) that elastically connects with the socket (30).
The cable quick plug according to claim 1, characterized in that the elastic member (20) is restrictively coupled to the plug body (10) by a fastening member (40).
The cable quick plug according to claim 1, wherein the fixed end projects into the inner side of the plug body (10), and the plug end of the elastic member (20) protrudes from the plug body The outer side of (10).
A cable quick plug according to claim 1 or 2 or 3, wherein the elastic member (20) is a coil spring and the snap portion (21) on the elastic member is disposed on the spring wire. The protruding chuck or the overhanging clip provided at the end of the coil spring insertion end extending to the outside of the spring winding region.
The cable quick plug according to claim 1 or 2 or 3, characterized in that the insertion end of the elastic member (20) is bent.
The cable quick plug according to claim 1 or 3, characterized in that the fixed end of the elastic member (20) forms an interference fit or a spiral fit with the plug body (10).
The cable quick plug according to claim 4, wherein the overhanging head of the coil spring has a straight arm shape or a raised shape.
The cable quick plug according to claim 4, wherein a step (12) is provided on an inner side of one end of the plug body (10) connected to the coil spring, and a fixed end end of the coil spring The card is disposed at the step (12).
The cable quick plug according to claim 5, characterized in that the center line of the bent portion of the elastic member (20) in a bent shape is on the same plane.
The cable quick plug of claim 7 wherein the length of the raised overhanging chuck matches the depth of the card slot in the socket.