Waterproof plug

Abstract

A waterproof plug is of a sealing sleeve structure made of elastic materials and comprises a body, and a fixing groove is formed in the outer wall of the body in the circumferential direction. Wherein at least two sealing layers are sequentially arranged on the body and comprise the first sealing layer serving as the bottom of the body and the second sealing layer located in an inner cavity of the body; the center of the first sealing layer and the center of the second sealing layer are provided with through holes for the wiring terminal to pass through, and the inner diameter of the through holes is smaller than the outer diameter of the wiring terminal. The waterproof plug provided by the utility model meets the waterproof requirement of a use environment through a multi-sealing design, and the waterproof grade can reach IP66; and moreover, the device has the advantages of rust prevention, dust prevention, compact structure and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and particularly relates to a waterproof plug for connectors. Background Art

[0002] Common existing connectors generally consist of an insulating base, conductive sheets, fastening screws, etc. Wiring hole positions for the power supply end and the load end are respectively arranged on both sides of the connector.

[0003] As Figure 1 shown, a waterproof plug 200 is arranged in the wiring hole position of the connector 100. The wiring terminal 300 is inserted into the connector 100 through the waterproof plug 200 to achieve electrical connection with the power supply side wire.

[0004] In the above structure, the waterproof plug 200 has a simple structure and a single waterproof structure. As Figure 2 、 Figure 3 shown, it cannot be applied to the use environments with waterproof requirements. Summary of the Invention

[0005] The purpose of the utility model is to provide a waterproof plug, which can meet the waterproof requirements of the use environment through multiple sealing designs, and the waterproof level can reach IP66; moreover, it also has the advantages of rust prevention, dust prevention, and compact structure.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A waterproof plug is a sealing sleeve structure made of an elastic material, including a body. A fixed groove is arranged along the circumferential direction on the outer wall of the body; wherein, at least two sealing layers are sequentially arranged on the body, including a first sealing layer at the bottom of the body and a second sealing layer in the inner cavity of the body; through holes for the wiring terminal to pass through are arranged in the centers of the first sealing layer and the second sealing layer, and the inner diameter of the through hole is smaller than the outer diameter of the wiring terminal.

[0008] Preferably, a detachable protective cover is arranged in the through hole in the center of the second sealing layer.

[0009] Preferably, a number of connection points for easy detachment and separation are arranged between the outer edge of the protective cover and the inner wall of the through hole in the center of the second sealing layer.

[0010] Preferably, the second sealing layer is a conical structure, and at least one circle of convex ribs is arranged along the circumferential direction of the inner wall of the conical surface near the through hole.

[0011] Preferably, a sealing strip is circumferentially convexly arranged in the center of the bottom of the fixed groove on the outer wall of the body.

[0012] Preferably, the cross section of the sealing strip is arc-shaped.

[0013] Preferably, the two side corners at the bottom of the fixing groove on the outer wall of the body are arc-shaped.

[0014] Preferably, a groove is provided on the upper part of one side wall of the fixing groove on the outer wall of the body, so that the side wall above the groove forms a movable structure.

[0015] Preferably, the waterproof plug is made of rubber.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The waterproof plug of the present utility model adopts a design with at least two sealing layers and is installed on the insulating base of the connector, having better waterproof performance; at the same time, the tightness of the insulating base is also ensured.

[0018] In addition, multiple waterproof structures are designed on the sealing layer and the outer wall of the waterproof plug, further increasing the sealing performance. The waterproof grade of the electrical connector using the waterproof plug of the present utility model can reach IP66. Description of the Drawings

[0019] Figure 1 is a perspective view of the existing connector;

[0020] Figure 2 is a perspective Figure 1 ;

[0021] Figure 3 is a perspective Figure 2 ;

[0022] Figure 4 is a perspective Figure 1 ;

[0023] Figure 5 is a perspective Figure 2 ;

[0024] Figure 6 is a front view of the embodiment of the present utility model;

[0025] Figure 7 is Figure 6 the A-A cross-sectional view of

[0026] Figure 8 is Figure 7 the enlarged schematic view of part B of Detailed Embodiment

[0027] See Figures 4 to 8, the waterproof plug of the present utility model is a sealing sleeve structure made of an elastic material, including a body 1, and a fixing groove 11 is arranged along the circumference on the outer wall of the body 1; wherein, at least two sealing layers are sequentially arranged on the body 1, including a first sealing layer 12 at the bottom of the body 1 and a second sealing layer 13 in the inner cavity of the body 1; through holes 121 and 131 for the wiring terminals to pass through are arranged at the centers of the first sealing layer 12 and the second sealing layer 13 respectively, and the inner diameters of the through holes 121 and 131 are smaller than the outer diameter of the wiring terminal.

[0028] Preferably, a detachable protective cover 132 is arranged at the center of the through hole 131 of the second sealing layer 13. It is used for sealing during the transportation of parts; when the connector is assembled, the wiring terminal pushes open the protective cover 132 and inserts it into the insulating base.

[0029] Preferably, a plurality of connection points 134 facilitating disconnection and separation are arranged between the outer edge of the protective cover 132 and the inner wall of the through hole 131 at the center of the second sealing layer 131.

[0030] Preferably, the second sealing layer 13 is of a conical structure, and at least one circle of convex ribs 133 is arranged along the circumference of the through hole 131 on the inner wall of the conical surface near the through hole 131.

[0031] Preferably, a sealing strip 111 protruding circumferentially is arranged at the center of the bottom of the fixing groove 11 on the outer wall of the body 1, which can cooperate with the groove on the inner wall of the wiring hole position of the connector insulating base to form another sealing layer.

[0032] Preferably, the cross section of the sealing strip 111 is arc-shaped.

[0033] Preferably, the two side corners at the bottom of the fixing groove 11 on the outer wall of the body 1 are arc-shaped.

[0034] Preferably, a groove 112 is arranged on the upper part of one side wall of the fixing groove 11 on the outer wall of the body 1, so that the side wall above the groove 112 forms a movable structure; after the waterproof plug is inserted into the wiring hole position of the connector insulating base, due to the movable structure formed by the side wall above the groove 112 and combined with the characteristic that it is made of an elastic material, the side wall of this part of the waterproof plug can extend along the outer wall of the wiring hole position of the insulating base to cover the wiring hole position, further improving the sealing performance at the wiring hole position of the insulating base.

[0035] Preferably, the material of the waterproof plug is rubber.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the invention can be modified or equivalently replaced without departing from the scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A waterproof plug, which is a sealing sleeve structure made of an elastic material, includes a body, and a fixing groove is provided along the circumference on the outer wall of the body; characterized in that, At least two sealing layers are sequentially arranged on the body, including a first sealing layer at the bottom of the body and a second sealing layer located in the inner cavity of the body; through holes for the wiring terminals to pass through are provided in the centers of the first sealing layer and the second sealing layer, and the inner diameter of the through holes is smaller than the outer diameter of the wiring terminals.

2. The waterproof plug according to claim 1, wherein, A detachable protective cover is provided in the through hole in the center of the second sealing layer.

3. The waterproof plug according to claim 2, characterized in that, A number of connection points facilitating detachment and separation are provided between the outer edge of the protective cover and the inner wall of the through hole in the center of the second sealing layer.

4. The waterproof plug according to claim 1 or 2 or 3, characterized in that, The second sealing layer has a conical structure, and at least one circle of convex ribs is arranged along the circumferential direction of the through hole on the inner wall of the conical surface near the through hole.

5. The waterproof plug according to claim 1, characterized in that, A sealing strip is circumferentially protruded in the center of the bottom of the fixing groove on the outer wall of the body.

6. The waterproof plug according to claim 5, wherein, The cross section of the sealing strip is arc-shaped.

7. The waterproof plug according to claim 1 or 5 or 6, characterized in that, Both corners at the bottom of the fixing groove on the outer wall of the body are arc-shaped.

8. The waterproof plug according to claim 1 or 5 or 6, characterized in that, A groove is provided in the upper part of one side wall of the fixing groove on the outer wall of the body, so that the side wall above the groove forms a movable structure.

9. The waterproof plug according to claim 7, wherein A groove is provided in the upper part of one side wall of the fixing groove on the outer wall of the body, so that the side wall above the groove forms a movable structure.

10. The waterproof plug according to claim 1, characterized in that, The waterproof plug is made of rubber.

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