Connector rubber plug and connector

Abstract

To provide a rubber plug including an elastic body that is provided with a plurality of through holes for cables to pass through and that can support the cables sufficiently securely and hardly slacks.SOLUTION: A rubber plug 3 includes an elastic main body provided with a plurality of through holes 3a for cables of a cable assembly 5 to pass through. The rubber plug includes a support body including a first support body embedded in a middle part of the elastic main body. The plurality of through holes is provided surrounding the first support body. The support body has a hardness greater than that of the elastic main body. In this application, due to elastic material characteristics of the elastic main body, when locking claws 22 are squeezed by a first nut 4 to contract and fasten the plug from circumference, the plug is tightly clamped by the locking claws so as to enable a certain deformation to be generated, thereby, pressing the cable assembly from the outside to the middle part. Besides, because the middle part is provided the support body having higher hardness (equivalent to a middle skeleton of the plug), the problem that the elastic main body easily slacks due to insufficient support in the middle part of can be solved, and thereby it is ensured that the cables are clamped well during a clamping process.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of electrical components, and more particularly to a rubber plug for a connector and a connector. [Background technology]

[0002] Current connectors are used for inserting assemblies with cables, the cable assemblies include cables and pins, and the pins can insert and connect corresponding electrical components after the connector is connected to a corresponding device. The connectors are provided with rubber plugs, through which the cables pass, and the cables can be clamped after the connector is caught by the rubber plugs, but when multiple cables are inserted into the rubber plugs, the cables cannot be clamped effectively. Summary of the Invention [Means for solving the problem]

[0003] The present application provides a rubber plug for a connector, the rubber plug including an elastic body provided with a plurality of perforations for passing cables therethrough, and a support including a first support embedded in the elastic body, the plurality of perforations being provided surrounding the first support, and the hardness of the support being greater than the hardness of the elastic body.

[0004] In one specific embodiment, the cross section of the perforation is circular, and each side of the cross section of the first support is an inward concave arc, the inward concave arc facing directly opposite the perforation and concentric with the perforation.

[0005] In one specific embodiment, the support further comprises a second support, the second support and the first support being disposed surrounding at least one of the perforations.

[0006] In one specific embodiment, the second support is located outside the perforations and oriented toward the area between adjacent perforations.

[0007] In one specific embodiment, at least a portion of the second support is located between adjacent said perforations.

[0008] In one specific embodiment, the cross sections of the perforation and the elastic body are both circular, the cross-sectional contour of the second support includes two side edges and a bottom edge that are adjacent to each other in sequence, the two side edges are both inwardly concave arc-shaped, the bottom edge is inwardly convex arc-shaped, the inner concave arc-shaped and the perforation are concentric, the outer convex arc-shaped and the elastic body are concentric, and the position where the two side edges meet is directed toward the portion between the adjacent perforations.

[0009] In one specific embodiment, the number of supports is multiple, and the multiple supports may be independent of each other or connected to each other, or some of the multiple supports are independent of each other and other parts are connected to each other.

[0010] In one specific embodiment, the support is metal or plastic.

[0011] The present application further provides a connector, comprising a rubber stopper of the connector described in any one of the preceding claims, further comprising a connecting seat and a first nut, the connecting seat having a first male threaded stage with a male thread, the first male threaded stage contacting a plurality of locking claws, the rubber stopper being positioned on the plurality of locking claws, and the first nut and the first male threaded stage being screwed together to move the locking claws and tighten the rubber stopper.

[0012] In one specific embodiment, the connection seat further has a second male thread step at one end remote from the locking claw, and the connector is provided with a second nut that screws into the second male thread step.

[0013] In the rubber stopper of the present application, due to the properties of the elastic material of the elastic body, when the locking claws contract under pressure from the first nut and tighten the rubber stopper from the periphery, the rubber stopper can generate a certain distortion in order to tighten against the locking claws, pressing the cable toward the middle from the outside. At the same time, a first support body (corresponding to the central skeleton of the rubber stopper) with greater hardness is provided in the middle, which improves the problem of insufficient support in the middle of the elastic body and easy loosening, and thereby ensures that the cable is clamped during the tightening process. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is an explosion diagram of a connector in the first embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram showing the connector in FIG. 1 attached to a box body. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 2 is a schematic diagram of the rubber stopper in FIG. 1. [Diagram 5] FIG. 4 is a schematic diagram of a rubber stopper in a second embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] In order to make those skilled in the art better understand the present invention, the present invention will be described in more detail hereinafter in combination with drawings and specific embodiments. EXAMPLES

[0016] 1 to 3, FIG. 1 is an exploded view of a connector in a first embodiment of the present application, FIG. 2 is a schematic view of the connector in FIG. 1 attached to a box body, and FIG. 3 is a cross-sectional view of the AA portion in FIG. 2.

[0017] The connector in this embodiment includes a connecting seat 2, a rubber stopper 3, and a first nut 4. The connecting seat 2 includes a main body 21. The main body 21 is provided with a first male thread stage 211 having a male thread. The first male thread stage 211 is in contact with a plurality of locking claws 22 distributed circumferentially so as to surround the end of the first male thread stage 211, and the plurality of locking claws 22 surround the first male thread stage 211 to form a cylindrical body. The rubber stopper 3 is located on the plurality of locking claws 22. The rubber stopper 3 is provided with a perforation 3a for passing a cable 52. Specifically, the rubber stopper 3 is provided with a plurality of perforations 3a, for example, two or more perforations 3a are provided, and in FIG. 1, four perforations 3a are provided, and in this manner, a plurality of cables 52 can be attached. As shown in FIG. 1, the cable assembly 5 includes a cable 52 and a pin 51 connected to the cable 52, the cable 52 passes through the bore 3a, and when the first nut 4 is not connected to the connecting seat 2, the locking claw 22 does not tighten the rubber stopper 3, and after the first nut 4 and the first male thread section 211 are screwed together, the first nut 4 has a fastening mouth that radially presses and contracts the locking claw 22 to tighten the rubber stopper 3 during the process of rotating and tightening, and in this case, the locking claw 22 and the rubber stopper 3 are both located in the inner hole of the first nut 4.

[0018] For understanding, please continue to refer to FIG. 4, which is a schematic diagram of the rubber plug 3 in FIG.

[0019] The rubber plug 3 in this embodiment includes an elastic body 31 made of an elastic material such as insulating rubber. In Figures 1 and 4, the elastic body 31 has a generally cylindrical configuration. The elastic body 31 is provided with a plurality of perforations 3a for the passage of the cables 52. The perforations 3a penetrate both ends of the elastic body 31 along the axial direction. Although four perforations 3a are shown in Figure 4, it should be understood that the number of perforations 3a is not limited and may be more or less than four. In addition, the rubber stopper 3 in this embodiment further includes a support, and FIG. 4 shows a first support 321 provided on the elastic body 31. Specifically, the first support 321 is located in the center of the elastic body 31, and the hardness of the support is greater than that of the elastic body 31. Hardness is a term in physics, and the ability of a material to resist a hard object being locally pressed into its surface is called hardness. When the hardness of the support is greater than that of the elastic body 31, the deformation amount of the support is smaller than that of the elastic body 31 when subjected to the same level of pressure.

[0020] The support body of the rubber stopper 3 is embedded within the elastic body 31 and may penetrate the elastic body 31 along the axial direction of the rubber stopper 3, or may be provided locally in the axial direction; obviously, providing the support body penetrating in the axial direction has a greater effect on improving the hardness of the entire rubber stopper 3.

[0021] The support can be fixed to the elastic body 31 by gluing, for example, the elastic body 31 is provided with a mounting hole penetrating along the axial direction, and the wall of the hole and the outer wall of the first support 321 can be coated with adhesive, and the first support 321 can be inserted into the mounting hole and then glued to the wall of the hole. The first support 321 can be fitted into the elastic body 31 and press-fitted to be fixed, that is, the first support 321 can be pressed into the mounting hole by interference fit to be fixed to the elastic body 31, and the first support 321 can be fastened to the elastic body 31, for example, the first support 321 can be integrally formed with the elastic body 31, and the size of both ends of the first support 321 can be larger than the size of the mounting hole, similar to the process of injection, vulcanization, etc., so that the first support 321 does not come off from the elastic body 31 and is fixed. It is understood that there are multiple ways to embed the support in the elastic body 31, and this embodiment does not impose any limitation thereon.

[0022] Through analysis, the reason why the background art cannot clamp multiple cables is that the support of the middle part of the elastic body is insufficient and the middle part is easily loosened when multiple cables are used, so that multiple cables cannot be clamped or a larger clamping force is required. In this embodiment, the first support 321 is provided in the middle part of the elastic body 31, and due to the characteristics of the elastic material of the elastic body 31, when the locking claw 22 is compressed under the pressure of the first nut 4 and the rubber plug 3 is tightened from the periphery, the rubber plug 3 can generate a certain distortion to be tightened against the locking claw 22, and the cable 52 is pressed from the outside to the middle part, and at the same time, a support with higher hardness (corresponding to the middle skeleton of the rubber plug 3) is provided in the middle part, which ensures that the cable 52 is clamped during the tightening process.

[0023] In Fig. 4, the first support 321 is provided in the middle of the elastic body 31, and the elastic body 31 is provided with a plurality of perforations 3a for mounting a plurality of cables 52, and the plurality of perforations 3a are provided surrounding the first support 321. When the first nut 4 tightens the rubber plug 3 from the periphery, the cable 52 in the perforation 3a has a metal part, and its deformation force transmission ability is insufficient, so the part of the elastic body 31 located inside the perforation 3a cannot press the cable 52, that is, the middle part of the elastic body 31 surrounded by the cable 52 is the main part lacking support, and the first support 321 is provided here to better support the elastic body 31 and cooperate with the elastic body 31 to clamp the cable 52.

[0024] As shown in FIG. 4, the elastic body 31 is provided with four perforations 3a, and the cross section of the first support 321 located in the middle may be diamond-shaped, and each side of the diamond is inwardly concave arc-shaped, and the inwardly concave arc-shaped side faces the corresponding perforation 3a, and the cross section of the perforation 3a is also circular, and the inwardly concave arc-shaped side and the perforation 3a are arranged concentrically. In this way, the inwardly concave arc-shaped side of the first support 321 is shaped to match the outer shape of the hole wall of the perforation 3a, so as to support the part of the elastic body 31 between the first support 321 and the perforation 3a, and can withstand pressure more strongly.

[0025] In this embodiment, the material of the first support 321 may be metal or plastic, and the material is simple and easy to obtain, and of course, the material may be a material whose hardness is greater than that of the elastic body 31, and is not limited to metal or plastic.

[0026] 3, the connecting seat 2 is further provided with a second male thread step 213 at one end remote from the locking claw 22, and has an annular flange 212 between the second male thread step 213 and the first male thread step 211, and the connector further includes a second nut 1 screwed with the second male thread step 213. In FIG. 3, a mounting hole is provided in the box wall 100 of the box body, the second male thread step 213 of the connector is located on the first side located on the left side of the box wall 100 passing through the box wall 100 from left to right, and the annular flange 212 is engaged and installed on the second side located on the right side of the box wall 100, and the first side and the second side may be the inside and outside of the box body, or the outside and inside. Then, by screwing the second nut 1 and the second male threaded section 213 together and tightening them, the connector can be fixed to the box wall 100, and after the cable 52 passes through the perforation 3a of the rubber plug 3, the pin 51 of the cable 52 can be connected to the electrical element that requires connection, and the cable 52 is turned on. EXAMPLES

[0027] Please refer to FIG. 5, which is a schematic diagram of a rubber plug 3 in a second embodiment of the present application.

[0028] This embodiment is basically the same as the first embodiment, and the rubber plug 3 includes a first support 321 located in the center, and a second support 322 provided outside the first support 321. By distributing the multiple supports in this manner, the elastic body 31 can be supported more completely and evenly.

[0029] As shown in FIG. 5, the second support 322 is specifically located outside the perforations 3a (i.e., in the direction away from the center of the elastic body 31) and is close to the outer periphery of the elastic body 31. Moreover, the second support 322 is directed toward the portion between the adjacent perforations 3a. In this way, the second support 322, together with the first support 321, can provide good support for the portion of the elastic body 31 near the cable 52, and can basically support the portion of the elastic body 31 surrounding the perforations 3a. In FIG. 5, each perforation 3a is surrounded by two second supports 322 and one first support 321, and of course, the perforations 3a can be surrounded by more supports.

[0030] The manner in which the support is arranged surrounding the perforation 3a is not limited to this. For example, the second support 322 may be at least partially located between adjacent perforations 3a, i.e., may be arranged between adjacent perforations 3a, or may be partially located between adjacent perforations 3a and another partially located outside the perforation 3a, or simultaneously, a support may be arranged radially outside the perforation 3a, which, together with the first support 321, can achieve the purpose of providing good support for the elastic body 31 near the cable 52.

[0031] 5, the cross-sectional profile of the second support 322 includes two sides and a bottom, the two sides are inwardly concave arc-shaped, the bottom is outwardly convex arc-shaped, the meeting point of the two sides is directed between the adjacent perforations 3a, the bottom is on the outside of the two sides, and the cross sections of the perforations 3a and the elastic body 31 are both circular, so that the inwardly concave arc-shaped can be arranged concentrically with the perforations 3a. In this way, it can better match the shape of the wall of the perforations 3a, adapt to the force, and better support the elastic body 31 between the adjacent perforations 3a, and also utilize the space of the elastic body 31 to provide a relatively reasonable number and size of supports.

[0032] It is understood that the position of the support is not limited to the arrangement manner of Examples 1 and 2, and may be other modes, for example, a plurality of support bodies such as cylindrical bodies, rectangular bodies, etc. may be arranged between the center of the elastic body 31 and the adjacent perforations 3a, and a detailed description is not given here. In addition, the plurality of support bodies may be connected to each other, or some may be connected and some may be independent, or all may be independent from each other.

[0033] In this text, specific examples are used to explain the principles and embodiments of the present application, and the above description of the examples is only to help understand the method and core idea of ​​the present application. It should be noted that those skilled in the art may further make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications are also within the scope of protection of the claims of the present application. [Explanation of symbols]

[0034] 100 ···Box wall; 1 ··· second nut; 2 ···connecting seat; 21 ···Main body; 211 First male thread stage; 212 ···Annular flange; 213 Second male thread stage; 22 ···Latching claw; 3 ···Rubber stopper; 3a...perforation; 31 ···Elastic body; 321 ···First support; 322 ···Second support; 4 ···First nut; 5 ···Cable assembly; 51 ···pin; 52···Cable.

Claims

1. A rubber plug for a connector, comprising: an elastic body having a plurality of perforations for passing a cable; and a support including a first support embedded in the elastic body, the plurality of perforations being provided surrounding the first support, and the hardness of the support being greater than the hardness of the elastic body; The support member penetrates the elastic body along the axial direction of the rubber plug, The support further includes a second support, the second support and the first support being disposed surrounding at least one of the perforations; the second support is located outside the perforation; A rubber plug for a connector, characterized in that the cross sections of the perforation and the elastic body are both circular, the cross-sectional contour of the second support includes two side edges and a bottom edge that are adjacent to each other in sequence, both of the two side edges are inwardly concave arc-shaped and the bottom edge is outwardly convex arc-shaped, the inwardly concave arc-shaped and the perforation are concentric, the outwardly convex arc-shaped and the elastic body are concentric, and the position where the two side edges meet is directed toward the portion between adjacent perforations.

2. The rubber plug of the connector described in claim 1, characterized in that the cross section of the perforation is circular, and each side of the cross section of the first support body is also in the shape of an inward concave arc, each of the inward concave arcs facing directly toward the perforation and concentric with the perforation.

3. The rubber plug of the connector according to claim 1 , wherein at least a portion of the second support is located between adjacent ones of the perforations.

4. The rubber plug of a connector described in any one of claims 1 to 3, characterized in that the number of supports is multiple, and the multiple supports may be independent of each other or connected to each other, or some of the multiple supports are independent of each other and other parts are connected to each other.

5. 4. The rubber plug for a connector according to claim 1, wherein the support is made of metal or plastic.

6. A connector comprising a rubber stopper of a connector according to any one of claims 1 to 3, further comprising a connecting seat and a first nut, the connecting seat being provided with a first male thread stage having a male thread, the first male thread stage contacting a plurality of locking claws, the rubber stopper being positioned on the plurality of locking claws, and the first nut and the first male thread stage being screwed together to move the locking claws and tighten the rubber stopper.

7. The connector according to claim 6, characterized in that the connecting seat further has a second male thread step at one end away from the locking claw, and the connector is provided with a second nut that screws into the second male thread step.

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