Heavy-load connector

Abstract

The utility model discloses a heavy-load connector, which comprises a shell, a connector main body is clamped in the shell, a connecting section is arranged at the tail part of the shell, a convex ring is arranged on the outer side of the connecting section, a pouring cavity is arranged in the connecting section, a clamping ring is arranged at one end of the connecting section, which is far away from the connector main body, of the pouring cavity; the hole diameter of the clamping ring is smaller than that of the pouring cavity, a plastic body formed through injection molding is arranged on the outer side of the connecting section, the protruding ring is arranged in the plastic body, part of the plastic body is filled in the pouring cavity, and a cable on the connector body penetrates through the pouring cavity and extends out of the plastic body. Compared with the prior art, due to the arrangement of the convex ring, a concave-convex structure is formed on the outer side of the connecting section, so that the connecting section can be clamped with a plastic body; the arrangement of the pouring cavity and the clamping ring enables the plastic body in the connecting section to be clamped at the position of the clamping ring, through the cooperation of the pouring cavity and the clamping ring, the connector can be manufactured only through one-time pouring, the number of procedures is small, the manufacturing time is short, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a heavy-duty connector. Background Art

[0002] At present, the heavy-duty connectors on cranes are applied in various working conditions, such as high temperature, low temperature, rain, vibration, etc. Therefore, the heavy-duty connectors are waterproofed. Referring to the attached Figure 1 , the existing heavy-duty connector is cast with a first plastic body through an injection molding process. After molding, the connector body, the first plastic body, the housing and the cable are integrated. Then, a second plastic body is cast through an injection molding process. After molding, the first plastic body, the second plastic body, the cable and the housing are integrated into a whole. There are two layers of plastic bodies on the outer side of the cable, and there are also two layers of plastic bodies at the connection between the cable and the connector body. The housing is embedded between the two layers of plastic bodies. Through this setting, the mechanical structure performance can be improved, and the anti-bending ability of the cable and the waterproof performance of the wire harness can be enhanced. However, this process requires two castings, which takes a long time and has low efficiency. Summary of the Utility Model

[0003] The utility model provides a heavy-duty connector to solve the problem that the existing heavy-duty connector needs to be cast twice for waterproof treatment.

[0004] The utility model provides a heavy-duty connector, including a housing, a connector body is clamped in the housing. A connection section is provided at the tail of the housing. A convex ring is provided on the outer side of the connection section. A casting cavity is provided in the connection section. A snap ring is provided at one end of the casting cavity away from the connector body. The aperture of the snap ring is smaller than the aperture of the casting cavity. A plastic body formed by injection molding is provided on the outer side of the connection section. The convex ring is arranged in the plastic body. Part of the plastic body is filled in the casting cavity. The cable on the connector body passes through the casting cavity and extends out of the plastic body.

[0005] Preferably, the outer side of the plastic body is flush with the outer side of the housing.

[0006] Preferably, the outer side of the snap ring is a convex ring.

[0007] Preferably, it further includes a screw, and the screw passes through the housing and is threadedly connected to the connector body.

[0008] Preferably, the plastic body extends from the casting cavity to the wiring hole of the connector body.

[0009] Preferably, a first step matching the lower end of the connector body is provided at the lower end of the housing, and a second step matching the first protrusion of the connector body is provided at the upper end of the housing.

[0010] Preferably, a second protrusion matching with the first groove of the connector body is provided on the inner wall of the housing, and the inner sides of the second protrusion and the first step are flush with each other.

[0011] Preferably, a limiting rib is provided between the inner wall of the housing and the connector body.

[0012] Preferably, an inclined surface is provided at the upper end of the limiting rib.

[0013] Preferably, an avoidance groove matching with the cylinder on the connector body is provided on the snap ring.

[0014] Compared with the prior art, in the present utility model, the plastic body is cast by an injection molding process. After molding, the connector body, the plastic body, the housing and the cable are integrated into one. The convex ring makes the outer side of the connection section form a concave-convex structure, so that it can be clamped with the plastic body. The pouring cavity and the snap ring make the plastic body in the connection section be stuck at the snap ring. The cooperation of the two makes the plastic body and the connection section firmly combined together, ensuring the anti-bending ability and waterproof performance of the connector. The present utility model can complete the production of the connector only by pouring once, with few processes, short production time and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a structural schematic diagram of the prior art;

[0017] Figure 2 is a structural schematic diagram of the present utility model;

[0018] Figure 3 is a cross-sectional schematic diagram of the present utility model;

[0019] Figure 4 is Figure 3 a partial structural schematic diagram of

[0020] Figure 5 is a partial structural schematic diagram of the present utility model;

[0021] Figure 6 is a structural schematic diagram of the housing of the present utility model;

[0022] Figure 7 is a physical diagram of the housing of the present utility model;

[0023] Figure 8 This is a physical diagram of the present utility model.

[0024] Reference numerals:

[0025] 1. Outer shell, 11. Connection section, 12. First step, 13. Second step, 14. Second protrusion, 15. Limit rib, 111. Convex ring, 112. Pouring cavity, 113. Snap ring, 151. Inclined surface, 2. Connector body, 21. Wiring hole, 22. First protrusion, 24. Cylinder, 3. Plastic body, 4. Cable, 5. Screw, 100. Avoidance groove. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Referring to the attached Figure 2 and the attached Figure 3 , the present utility model provides a heavy-duty connector, including an outer shell 1, a connector body 2 is snap-fitted inside the outer shell 1, a connection section 11 is provided at the tail of the outer shell 1. Referring to the attached Figure 4 , a convex ring 111 is provided on the outer side of the connection section 11, a pouring cavity 112 is provided inside the connection section 11, a snap ring 113 is provided at one end of the pouring cavity 112 far from the connector body 2, the aperture of the snap ring 113 is smaller than the aperture of the pouring cavity 112, a plastic body 3 formed by injection molding is provided on the outer side of the connection section 11, the convex ring 111 is arranged inside the plastic body 3, and part of the plastic body 3 is filled in the pouring cavity 112. The cable 4 on the connector body 2 passes through the pouring cavity 112 and extends outside the plastic body 3. In the present utility model, the convex ring 111 makes the outer side of the connection section 11 form a concave-convex structure, so that it can be snap-fitted with the plastic body 3. The pouring cavity 112 and the snap ring 113 make the plastic body 3 inside the connection section 11 be stuck at the snap ring 113. The cooperation of the two makes the plastic body 3 and the connection section 11 firmly combined together, ensuring the anti-bending ability and waterproof performance of the connector. The present utility model can complete the synthesis of the plastic body 3 and the connection section 11 only by pouring once through the cooperation of internal snap-fitting and external snap-fitting, with few processes, short production time and high efficiency of the connector.

[0028] As another embodiment of the present utility model: the outer side of the plastic body 3 is flush with the outer side of the outer shell 1. This setting makes the outer side of the connector flat and the appearance of the connector better.

[0029] Specifically, referring to the attachedFigure 4 On the outer side of the snap ring 113 is a convex ring 111, and there are two convex rings 111 on the outer side of the connecting section 11 in total.

[0030] As another embodiment of the present utility model: This embodiment further includes a screw 5. The screw 5 passes through the housing 1 and is threadedly connected to the connector body 2. A counterbore adapted to the screw 5 is provided on the housing 1, so that the outer side of the connector becomes flat. Specifically, sealant is also filled between the screw 5 and the housing 1.

[0031] As another embodiment of the present utility model: The plastic body 3 extends from the casting cavity 112 into the wiring hole 21 of the connector body 2, thereby effectively improving the waterproof performance of the connector. Secondly, it can also make the plastic body 3 and the connector body 2 more firmly combined.

[0032] One embodiment of the snap connection between the housing 1 and the connector body 2: The lower end of the housing 1 is provided with a first step 12 that cooperates with the lower end of the connector body 2, and the upper end of the housing 1 is provided with a second step 13 that cooperates with the first protrusion 22 of the connector body 2. The connector body 2 is inserted from the front of the housing 1, and then the lower end of the connector body 2 abuts against the first step 12, and at the same time the first protrusion 22 abuts against the second step 13. By setting steps at the front and rear ends of the housing 1, the connector body 2 can be more stably fixed in the housing 1.

[0033] As another embodiment of the present utility model: On the inner wall of the housing 1, there is a second protrusion 14 that cooperates with the first groove of the connector body 2, and the inner side of the second protrusion 14 is flush with the inner side of the first step 12.

[0034] As another embodiment of the present utility model: Refer to the appendix Figure 6 , a limiting rib 15 is provided between the inner wall of the housing 1 and the connector body 2. This structural design enables the connector body 2 to be more firmly restricted in the housing 1 and prevents shaking.

[0035] As another embodiment of the present utility model: The upper end of the limiting rib 15 is provided with an inclined surface 151, and the front end of the inclined surface 151 is close to the housing 1. This structural design is conducive to guiding the connector body 2 into the housing 1.

[0036] As another embodiment of the present utility model: Refer to the appendix Figure 5 , an avoidance groove 100 adapted to the cylinder 24 on the connector body 2 is provided on the snap ring 113. Part of the cylinder 24 is located in the casting cavity 112, and part of the cylinder 24 is located in the snap ring 113. This setting can reduce the influence of the cylinder 24 on the snap ring 113 and ensure that the snap ring 113 can effectively prevent the plastic body 3 in the casting cavity 112 from coming out.

[0037] As another embodiment of the present utility model: The outer contour of the plastic body 3 on the cable 4 gradually becomes smaller from front to back.

[0038] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting it; Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An overload connector, characterized in that, It includes a housing, a connector body is snap - connected inside the housing. A connection section is provided at the tail of the housing. A convex ring is provided on the outer side of the connection section. A casting cavity is provided inside the connection section. A snap ring is provided at the end of the casting cavity far from the connector body. The aperture of the snap ring is smaller than that of the casting cavity. A plastic body formed by injection molding is provided on the outer side of the connection section. The convex ring is arranged inside the plastic body. Part of the plastic body is filled in the casting cavity. The cable on the connector body passes through the casting cavity and extends out of the plastic body.

2. The heavy-duty connector according to claim 1, wherein, The outer side of the plastic body is flush with the outer side of the housing.

3. The heavy-duty connector according to claim 1, characterized in that, The outer side of the snap ring is a convex ring.

4. The heavy-duty connector according to claim 1, characterized in that It further includes a screw, and the screw passes through the housing and is thread - connected to the connector body.

5. The heavy-duty connector according to claim 1, characterized in that, The plastic body extends from the casting cavity to the wiring hole of the connector body.

6. The heavy-duty connector according to claim 1, wherein A first step is provided at the lower end of the housing to cooperate with the lower end of the connector body. A second step is provided at the upper end of the housing to cooperate with the first protrusion of the connector body.

7. The heavy-duty connector according to claim 6, wherein A second protrusion is provided on the inner wall of the housing to cooperate with the first groove of the connector body. The inner side of the second protrusion is flush with the inner side of the first step.

8. The heavy-duty connector according to claim 7, characterized in that, Limit ribs are provided between the inner wall of the housing and the connector body.

9. The heavy-duty connector according to claim 8, wherein, An inclined surface is provided at the upper end of the limit ribs.

10. The heavy-duty connector according to claim 1, characterized in that, An avoidance groove adapted to the cylinder on the connector body is provided on the snap ring.

Images