Waterproof plug of automobile connector

Abstract

The utility model provides an automobile connector waterproof plug which comprises a flexible plug column, a wire harness penetrating hole is formed in the center of the flexible plug column, a plurality of first annular protrusions are evenly arranged on the inner wall of the flexible plug column, every two adjacent first annular protrusions are in smooth transition through a first arc-shaped groove, and a plurality of second annular protrusions are evenly arranged on the outer wall of the flexible plug column. Every two adjacent second annular protrusions are in smooth transition through a second arc-shaped groove, the first annular protrusions, the second annular protrusions and the flexible bolt column are coaxial, the first annular protrusions and the second annular protrusions are arranged in a staggered mode, the two ends of the flexible bolt column are connected with hard flaring sections respectively, and the inner walls of the hard flaring sections and the inner wall of the wire harness penetrating hole are in smooth transition. The automobile connector waterproof plug has the advantages of being scientific in design, easy and convenient to use, good in waterproof effect and long in service life.

Description

Technical Field

[0001] The utility model relates to a waterproof part, specifically to a waterproof plug for an automotive connector. Background Art

[0002] During the connection of various circuits inside an automobile, it is usually necessary to pass a wire harness through a sheet metal hole to connect with a wire harness connector on the vehicle. To avoid water ingress and ensure tightness, a waterproof plug is usually provided between the wire harness and the sheet metal hole. Currently, there are many types of waterproof plugs used for automotive circuit connections in the market. For example, a waterproof plug for an automotive connector disclosed in Chinese Patent CN204992102U, a waterproof plug for an automotive connector in Chinese Patent CN219534984U, a waterproof plug for an automotive wire harness disclosed in Chinese Patent CN204289868U, etc. The middle parts of these waterproof plugs are all flexible plug columns made of polyurethane material, and a wire harness through-hole is opened in the center of the plug column. During the assembly process, the wire harness passes through the wire harness through-hole in the center of the plug column, and the plug column seals the sheet metal wire harness hole. However, during use, the wire harness or the waterproof plug is stressed, which will ultimately cause the end of the waterproof plug to deform, not only easily affecting the waterproof effect but also the service life of the waterproof plug.

[0003] To solve the above problems, people have been seeking an ideal technical solution. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a waterproof plug for an automotive connector.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A waterproof plug for an automotive connector includes a flexible plug column. A wire harness through-hole is opened in the center of the flexible plug column. A plurality of first annular protrusions are evenly arranged on the inner wall of the flexible plug column, and a first arc-shaped groove is used for smooth transition between adjacent two first annular protrusions. A plurality of second annular protrusions are evenly arranged on the outer wall of the flexible plug column, and a second arc-shaped groove is used for smooth transition between adjacent two second annular protrusions. The first annular protrusions, the second annular protrusions and the flexible plug column are coaxial, and the first annular protrusions and the second annular protrusions are arranged in a staggered manner. Hardened flared sections are respectively connected to both ends of the flexible plug column, and the inner wall of the hardened flared section is in smooth transition with the inner wall of the wire harness through-hole.

[0007] The outer contour of the hardened flared section is cylindrical, and the outer diameter of the cylinder is the same as the outer diameter of the flexible plug column. The outer walls of the flexible plug column and the hardened flared section are in smooth transition.

[0008] The two rigid flared sections are respectively detachably connected to the protective sleeve. The inner diameter of the protective sleeve is greater than or equal to the outer diameter of the rigid flared section. One end of the protective sleeve is open, and a limiting ring plate is provided at the other end of the protective sleeve. The inner diameter of the limiting ring plate is smaller than the outer diameter of the rigid flared section. A plurality of first connecting columns are evenly arranged on the outer surface of the protective sleeve, and second connecting columns are correspondingly arranged around the through hole of the sheet metal wire harness. The first connecting column and the second connecting column are connected by a detachable limiting member.

[0009] Both the first connecting column and the second connecting column include a column body. An annular groove is provided in the middle of the column body, a strip-shaped hole is provided in the middle of the limiting member, and both ends of the limiting member are respectively connected to the first connecting column and the second connecting column.

[0010] External threads are provided on the outer wall of the rigid flared section, and internal threads are provided on the inner wall of the protective sleeve. The protective sleeve is threadedly connected to the rigid flared section.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows. The present utility model provides a waterproof plug for an automotive connector, which has the advantages of scientific design, simple use, good waterproof effect, and long service life. Specifically, a first annular protrusion and a second annular protrusion are respectively provided on the inner side and the outer side of the flexible bolt column. The first annular protrusion and the second annular protrusion are arranged in a staggered manner, so that the thickness of the flexible bolt column is more balanced. At the same time, both ends of the flexible bolt column are connected to the rigid flared section, leaving a certain bending space for the wire harness, and also avoiding deformation of the end of the flexible bolt column along with the bending of the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the schematic structural diagram (I) of the present utility model.

[0013] Figure 2 is the schematic structural diagram (II) of the present utility model.

[0014] Figure 3 is the schematic structural diagram of the sheet metal in the present utility model.

[0015] In the figure: 1. Flexible bolt column; 101. First annular protrusion; 102. Second annular protrusion; 2. Wire harness through hole; 3. Rigid flared section; 4. Protective sleeve; 5. Limiting ring plate; 6. First connecting column; 7. Limiting member; 8. Sheet metal wire harness through hole; 9. Second connecting column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions of the present utility model will be further described in detail below through specific embodiments.

[0017] In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. "Installation", "provided with", "connection", etc. can adopt conventional means in the prior art, such as: integral setting, snap-in installation, welded connection, bonded connection, bolt connection, etc. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances, and suitable connection, setting or installation methods can be selected in the prior art.

[0018] As Figures 1 - 3 shown, an automotive connector waterproof plug includes a flexible bolt column 1. A wire harness through hole 2 is formed in the center of the flexible bolt column 1. A plurality of first annular protrusions 101 are uniformly arranged on the inner wall of the flexible bolt column 1. The adjacent two first annular protrusions 101 are smoothly transitioned through a first arc-shaped groove. A plurality of second annular protrusions 102 are uniformly arranged on the outer wall of the flexible bolt column 1. The adjacent two second annular protrusions 102 are smoothly transitioned through a second arc-shaped groove. The first annular protrusions 101, the second annular protrusions 102 and the flexible bolt column 1 are coaxial. The first annular protrusions 101 and the second annular protrusions 102 are arranged in a staggered manner. Hardened flared sections 3 are respectively connected to both ends of the flexible bolt column 1. The inner wall of the hardened flared section 3 is smoothly transitioned with the inner wall of the wire harness through hole 2.

[0019] The automotive connector waterproof plug has the advantages of scientific design, simple use, good waterproof effect and long service life. Specifically, the first annular protrusions and the second annular protrusions are respectively arranged on the inner side and the outer side of the flexible bolt column. The first annular protrusions and the second annular protrusions are arranged in a staggered manner, making the thickness of the flexible bolt column more balanced. At the same time, the hardened flared sections are connected to both ends of the flexible bolt column, leaving a certain bending space for the wire harness and also preventing the end of the flexible bolt column from deforming as the wire harness is bent.

[0020] In one embodiment, the outer contour of the hardened flared section 3 is cylindrical, and the outer diameter of the cylinder is the same as the outer diameter of the flexible bolt column 1. The outer walls of the flexible bolt column 1 and the hardened flared section 3 are smoothly transitioned. Specifically, for the convenience of connection, the inside of the hardened flared section can be hollow, and both ends of the flexible bolt column are snapped into the inside of the hardened flared section.

[0021] In one embodiment, the two rigid flared sections 3 are respectively detachably connected to the protective sleeve 4. The inner diameter of the protective sleeve 4 is greater than or equal to the outer diameter of the rigid flared section 3. One end of the protective sleeve 4 is open, and a limiting ring plate 5 is provided at the other end of the protective sleeve 4. The inner diameter of the limiting ring plate 5 is smaller than the outer diameter of the rigid flared section 3. A plurality of first connecting columns 6 are uniformly arranged on the outer surface of the protective sleeve 4, and second connecting columns 9 are correspondingly arranged around the through hole 8 of the wire harness of the sheet metal. The first connecting columns 6 and the second connecting columns 9 are connected by a detachable limiting member 7. The two ends of the waterproof plug are positioned by the limiting member, further improving the stability of the structure. Specifically, the limiting member can be an elastic band.

[0022] In one embodiment, both the first connecting column 6 and the second connecting column 9 include a column body. An annular groove is provided in the middle of the column body. A strip-shaped hole is provided in the middle of the limiting member 7. The two ends of the limiting member 7 are respectively connected to the first connecting column 6 and the second connecting column 9.

[0023] In one embodiment, an external thread is provided on the outer wall of the rigid flared section 3, and an internal thread is provided on the inner wall of the protective sleeve 4. The protective sleeve 4 is threadedly connected to the rigid flared section 3, which is convenient for installation and disassembly.

[0024] The above embodiments can be combined with each other.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features. Without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed by the present invention.

Claims

1. A waterproof plug for an automobile connector, comprising a flexible plug post, a wiring harness through hole being provided at the center of the flexible plug post, characterized in that: A plurality of first annular protrusions are evenly arranged on the inner wall of the flexible bolt, and a first arc groove forms a smooth transition between two adjacent first annular protrusions; a plurality of second annular protrusions are evenly arranged on the outer wall of the flexible bolt, and a second arc groove forms a smooth transition between two adjacent second annular protrusions; the first annular protrusion and the second annular protrusion are coaxial with the flexible bolt, and the first annular protrusion and the second annular protrusion are staggered; both ends of the flexible bolt are respectively connected to a hard flared section, and the inner wall of the hard flared section forms a smooth transition with the inner wall of the wiring harness through hole.

2. The automotive connector waterproof plug according to claim 1, characterized in that: The outer contour of the hard flared section is cylindrical, the outer diameter of the cylinder is the same as the outer diameter of the flexible bolt, and the flexible bolt and the outer wall of the hard flared section are smoothly transitioned.

3. The automotive connector waterproof plug according to claim 2, characterized in that: The two hard flared sections are respectively detachably connected to the protective cover, the inner diameter of the protective cover is greater than or equal to the outer diameter of the hard flared section, one end of the protective cover is open, and a limiting ring plate is arranged at the other end of the protective cover, and the inner diameter of the limiting ring plate is smaller than the outer diameter of the hard flared section; a plurality of first connecting columns are evenly arranged on the outer surface of the protective cover, and second connecting columns are correspondingly arranged around the through hole of the sheet metal wiring harness, and the first connecting columns and the second connecting columns are connected by a detachable limiting piece.

4. The automotive connector waterproof plug according to claim 3, characterized in that: The first connecting column and the second connecting column both include a column body, a ring groove is arranged in the middle of the column body, a strip hole is arranged in the middle of the limiting member, and two ends of the limiting member are respectively connected to the first connecting column and the second connecting column.

5. The automotive connector waterproof plug according to claim 4, characterized in that: The outer wall of the hard flared section is provided with an external thread, the inner wall of the protective sleeve is provided with an external thread, and the protective sleeve is threadedly connected to the hard flared section.

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