阅读说明：本技术 线束的防水结构及其包含该结构的dcdc转换器或充电机 (Waterproof structure of wire harness and DCDC converter or charger comprising same ) 是由 彭玉洋 刘丁 鲍英超 李国平 于 2020-04-21 设计创作，主要内容包括：本发明涉及一种线束的防水结构及其包含该结构的DCDC转换器或充电机,它包括用于与壳体上开设的贯通壳体内外的通孔配合的密封盖,密封盖与壳体之间密封连接,所述密封盖设有若干个堵头安装孔,每个堵头安装孔内安装有由弹性材料制成的密封堵头,密封堵头与堵头安装孔之间密封连接,所述密封堵头上设置有供线束穿过的穿线孔,所述穿线孔与线束之间密封连接。(The invention relates to a waterproof structure of a wire harness and a DCDC converter or charger comprising the same, and the waterproof structure comprises a sealing cover which is matched with a through hole which is formed in a shell and penetrates through the shell, wherein the sealing cover is connected with the shell in a sealing manner, the sealing cover is provided with a plurality of plug mounting holes, a sealing plug made of an elastic material is mounted in each plug mounting hole, the sealing plugs are connected with the plug mounting holes in a sealing manner, a threading hole for the wire harness to pass through is formed in each sealing plug, and the threading hole is connected with the wire harness in a sealing manner.)

1. A waterproof structure of a wire harness, characterized in that: including being used for with the casing on the through-hole complex sealed lid inside and outside the casing that link up of seting up, sealing connection between sealed lid and the casing, sealed lid is equipped with a plurality of end cap mounting hole, installs the sealed end cap of making by elastic material in every end cap mounting hole, sealing connection between sealed end cap and the end cap mounting hole, be provided with the through wires hole that supplies the pencil to pass on the sealed end cap, sealing connection between through wires hole and the pencil.

2. The waterproof structure of a wire harness according to claim 1, characterized in that: the sealing cover comprises a body and a convex body integrally manufactured with the body, the convex body is matched with the through hole in the shell, a groove for accommodating a sealing ring is formed in the periphery of the body corresponding to the root of the convex body, and the sealing ring which can be matched with the outer wall of the shell is arranged in the groove.

3. The waterproof structure of a wire harness according to claim 2, characterized in that: the upper edge of the groove is provided with a plurality of convex clips which are arranged at intervals and protrude inwards the groove, and the convex clips are clipped on the sealing ring.

4. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: the outer wall of the sealing plug is provided with a plurality of annular outer protrusions, and the outer diameter of each annular outer protrusion is larger than the inner diameter of the plug mounting hole.

5. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: an annular inner bulge is formed at the position, close to the end part, of the plug mounting hole, and an annular groove matched with the annular inner bulge is formed on the sealing plug.

6. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: and a chamfer inclined plane is formed at the inner end of the plug mounting hole.

7. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: the outer end of the sealing plug is higher than the surface of the sealing cover, and the height of the surface of the sealing cover is gradually reduced from the outer edge of the sealing plug to the outside.

8. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: the sealing cover is of a diamond structure, and two mounting holes which are symmetrically arranged are formed in the sealing cover body.

9. The waterproof structure of the wire harness according to claim 1, 2, or 3, characterized in that: the sealing cover is provided with two fan-shaped holes which are symmetrically arranged with the two plug mounting holes.

10. The DCDC converter or charger of the waterproof structure containing the wire harness of any claim 1-9 comprises a shell, a PCB board in the shell and a fan outside the shell, wherein the fan is connected with the PCB board through the wire harness to get electricity, and the wire harness penetrates through a threading hole in a sealing plug.

Technical Field

The invention relates to a sealing waterproof structure, in particular to a waterproof structure of a wire harness and a DCDC converter or charger comprising the same.

Background

Disclosure of Invention

The invention aims to provide a waterproof structure of a wire harness, which can solve the waterproof problem between the wire harness and the whole machine, can conveniently replace a component connected with the wire harness and is convenient to install, and a DCDC converter or a charger comprising the waterproof structure, and solves the problems of the existing wire harness waterproof structure.

In order to achieve the purpose, the invention adopts the following technical scheme: the waterproof structure of pencil including be used for with the casing on set up link up the inside and outside through-hole complex sealed lid of casing, sealing connection between sealed lid and the casing, sealed lid is equipped with a plurality of end cap mounting hole, installs the sealed end cap of making by elastic material in every end cap mounting hole, sealing connection between sealed end cap and the end cap mounting hole, be provided with the through wires hole that supplies the pencil to pass on the sealed end cap, sealing connection between through wires hole and the pencil. The sealing cover is made of metal material or plastic material capable of forming rigid support, and the sealing plug is made of elastic material such as silicon rubber which can be extruded or compressed. The sealing cover can play a role in keeping the framework, and can realize the support of the sealing plug and control the compression amount of the sealing plug, so that the good sealing effect on the wiring harness is realized, and the sealing problem between the wiring harness and the shell is solved. When the assembly connected with the wiring harness outside the shell is damaged and needs to be replaced, the wiring harness in the shell is separated from the component in the shell only by opening the sealing cover, the external assembly connected with the wiring harness can be detached, and then the external assembly, the speed limit and the sealing cover are made worse together, so that the whole replacement and installation operation are very convenient.

Preferably, the sealing cover comprises a body and a convex body integrally manufactured with the body, the convex body is matched with the through hole in the shell, a groove for accommodating the sealing ring is formed in the periphery of the body corresponding to the root of the convex body, and the sealing ring which can be matched with the outer wall of the shell is arranged in the groove. Wherein, the location of sealed lid on the casing can be realized with the through-hole cooperation on the casing to the convex body, and when sealed lid and casing assembly, the sealing washer is compressed tightly between sealed lid and casing outer wall in order to realize sealed between lid and the casing sealed.

Preferably, the upper edge of the groove is provided with a plurality of convex clips which are arranged at intervals and protrude inwards the groove, and the convex clips are clamped on the sealing ring. The convex card can block the sealing ring, and the sealing ring is prevented from slipping during assembly and replacement.

Preferably, the outer wall of the sealing plug is provided with a plurality of annular outer protrusions, and the outer diameter of each annular outer protrusion is larger than the inner diameter of the plug mounting hole. When the sealing plug is assembled with the plug mounting hole, the annular outer protrusion is extruded by the inner wall of the plug mounting hole to form sealing contact between the outer wall of the sealing plug and the inner wall of the plug mounting hole, and good sealing between the sealing plug and the sealing cover is guaranteed. The annular inner bulges greatly reduce the risk of air tightness loss caused by uncontrollable factors such as bending of the wire harness, sliding of the sealing plug, surface defects in the plug mounting hole of the sealing cover and the like while increasing the sealing pressure, and the air tightness reliability of the whole machine is improved.

Preferably, an annular inner protrusion is formed at a position, close to the end portion, of the plug mounting hole, and an annular groove matched with the annular inner protrusion is formed on the sealing plug. Interior protruding cooperation and annular groove cooperation play and prevent that sealed end cap from leading to sealed end cap to deviate from in the end cap mounting hole of sealed lid when the pull pencil, secondly avoid outside pencil when buckling, influence the sealed of inside sealed end cap.

Preferably, the inner end of the plug mounting hole is formed with a chamfered slope. The chamfer inclined plane has the function of reducing resistance when the sealing plug is assembled with the sealing cover, so that the non-sealing part of the sealing plug can slide out more easily.

Preferably, the outer end of the sealing plug is higher than the surface of the sealing cover, and the height of the surface of the sealing cover is gradually reduced from the outer edge of the sealing plug to the outside, so that when the wiring harness is bent, the damage and abrasion of the plastic sharp corner to the sealing plug are reduced, a space is reserved for the sealing plug, and the wiring harness is prevented from being excessively bent and damaged.

Preferably, the sealing cover is of a diamond structure, and two symmetrically arranged mounting holes are formed in the sealing cover body. Under the condition of ensuring the structural strength and sealing, the size of the whole sealing structure is greatly reduced, and the sealing structure is enough space of the whole machine.

Preferably, the number of the plug mounting holes is two, and the sealing cover is provided with two fan-shaped holes which are symmetrically arranged with the two plug mounting holes. Two mounting holes are selected for assembly, and the mounting device is more suitable for mounting in various occasions.

The DCDC converter or the charger with the waterproof structure comprises a shell, a PCB in the shell and a fan outside the shell, wherein the fan is connected with the PCB through a wire harness to obtain electricity, and the wire harness penetrates through a threading hole in a sealing plug.

The invention not only can solve the waterproof problem between the wire harness and the whole machine, but also has the advantages of convenient replacement of the component connected with the wire harness, convenient installation and the like.

Drawings

Fig. 1 is a sectional view of a wire harness waterproofing structure of the present invention;

FIG. 2 is an isometric view of the inner end of the waterproof construction of the wire harness of the present invention;

FIG. 3 is an isometric view of the outer end of the waterproof construction of the wire harness of the present invention;

FIG. 4 is a schematic view of a sealing plug according to the present invention;

fig. 5 is a schematic structural diagram of a DCDC converter or charger including the wire harness waterproofing structure of the present invention.

Detailed Description

The invention is further described below with reference to the figures and specific embodiments.

By figure 1, figure 2, figure 3, figure 4, the waterproof construction of pencil is including being used for with the casing on set up link up the inside and outside sealed lid 1 of through-hole complex of casing, sealed lid is made by nylon PA66+30% glass fiber material, sealing connection between sealed lid 1 and the casing, sealed lid 1 is the rhombus structure, sealed lid 1 includes body 5 and the convex body 6 of making with the body an organic whole, the convex body cooperates with the through-hole on the casing, body 5 is equipped with the recess 7 of holding the sealing washer corresponding to convex body root periphery, be provided with in the recess 7 can with casing outer wall complex sealing washer 8, the reason is equipped with 4 circumference interval distribution and the protruding boss 11 in the recess on the groove 7, boss 11 card is on sealing washer 8. The body 5 is provided with two symmetrically arranged mounting holes 9, the convex body 6 of the sealing cover is internally provided with 2 plug mounting holes 2, and the convex body 6 is provided with two fan-shaped holes 10 symmetrically arranged with the 2 plug mounting holes 2. A sealing plug 3 made of silicon rubber is installed in each plug installation hole 2, 3 annular outer protrusions 12 are arranged on the outer wall of each sealing plug 3, and the outer diameter of each annular outer protrusion 12 is larger than the inner diameter of each plug installation hole 2 to achieve sealing connection between each sealing plug 3 and each plug installation hole 2. An annular inner protrusion 13 is formed at the position, close to the outer end part, of the plug mounting hole 2, an annular groove 14 matched with the annular inner protrusion 13 is formed on the sealing plug 3, and a chamfer inclined plane 15 is formed at the inner end of the plug mounting hole 2. The outer end of the sealing plug 3 is higher than the surface of the sealing cover 1, and the height of the surface of the sealing cover 1 is gradually reduced outwards from the outer edge of the sealing plug. The sealed plug 3 is provided with a threading hole 4 for the wiring harness to pass through, and the threading hole 4 is connected with the wiring harness in a sealing way.

As shown in fig. 5, the wire harness waterproof structure is a DCDC converter or a charger, and includes a housing 16, a PCB 17 in the housing, and a fan 18 outside the housing, wherein the fan 18 is connected to the PCB 17 through a wire harness 19 to obtain electricity, the wire harness 19 passes through a threading hole on a sealing plug, and a screw 20 passes through a mounting hole on a sealing cover body to be in threaded fit with the housing to realize the mounting and fixing of the sealing cover.