阅读说明：本技术 具有直插式线束防水结构的新能源汽车用电流转换器 (Current converter for new energy automobile with cut straightly formula pencil waterproof construction ) 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：本发明及一种具有直插式线束防水结构的新能源车用电流转换器,它包括壳体及壳体内的PCB板和壳体外的风扇,风扇连接有用于取电的线束,壳体上开设的贯通壳体内外的通孔,PCB板上对应于所述通孔内端的位置固定有插座,壳体的通孔内密封配合有密封盖,密封盖内密封配合有由弹性材料制成的密封堵头,所述线束穿过密封堵头后进入壳体内,线束与密封堵头间密封配合,线束位于壳体内的该端电连接有插头,所述插头与密封盖固定,插头的自由端与所述插座插配电连接,插头与插座为无卡扣配合。(The invention relates to a current converter with a direct-insertion wire harness waterproof structure for a new energy vehicle, which comprises a shell, a PCB (printed circuit board) in the shell and a fan outside the shell, wherein the fan is connected with a wire harness for taking electricity, the shell is provided with a through hole penetrating through the inside and the outside of the shell, a socket is fixed on the PCB corresponding to the inner end of the through hole, a sealing cover is hermetically matched in the through hole of the shell, a sealing plug made of an elastic material is hermetically matched in the sealing cover, the wire harness penetrates through the sealing plug and then enters the shell, the wire harness is hermetically matched with the sealing plug, the end of the wire harness positioned in the shell is electrically connected with a plug, the plug is fixed with the sealing cover, the free end of the plug is electrically connected with the socket in an inserting and matching.)

1. The utility model provides a current converter for new energy automobile with cut straightly formula pencil waterproof construction, includes PCB board and the outer fan of casing in casing and the casing, and the fan is connected with the pencil that is used for getting the electricity, its characterized in that: the through-hole inside and outside the through-hole that link up the casing of seting up on the casing corresponds to on the PCB board the fixed position of through-hole inner has the socket, and the through-hole internal seal cooperation of casing has sealed lid, and sealed lid internal seal cooperation has the sealed end cap of making by elastic material, in the pencil passed into the casing behind the sealed end cap, sealed cooperation between pencil and sealed end cap, this end electricity that the pencil is located the casing is connected with the plug, the plug is fixed with sealed lid, the free end of plug with the socket is inserted and is joined in marriage the electricity, the plug is the cooperation of no buckle with the socket.

2. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of 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 a through hole in the shell, the sealing cover is provided with a plurality of plug mounting holes, each plug mounting hole is internally provided with a sealing plug, the sealing plugs are connected with the plug mounting holes in a sealing mode, a threading hole for a thread bundle to pass through is formed in each sealing plug, the plug is fixed to the end portion of the convex body of the sealing cover, and the threading hole is connected with the thread bundle in a sealing mode.

3. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of claim 2, characterized in that: the sealing cover body is provided with a groove corresponding to the periphery of the root of the convex body and used for accommodating a sealing ring, and the sealing ring which can be matched with the outer wall of the shell is arranged in the groove.

4. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of claim 3, 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.

5. The current converter for a new energy vehicle having an in-line wiring harness waterproofing structure of the wiring harness according to claim 2, 3 or 4, 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.

6. The current converter for a new energy vehicle having an in-line wiring harness waterproofing structure of the wiring harness according to claim 2, 3 or 4, 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.

7. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of claim 2, 3 or 4, wherein: and a chamfer inclined plane is formed at the inner end of the plug mounting hole.

8. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of claim 2, 3 or 4, wherein: 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.

9. The current converter for the new energy automobile with direct plug-in wire harness waterproof structure of claim 2, 3 or 4, wherein: the sealing cover is of a diamond structure, and two mounting holes which are symmetrically arranged are formed in the sealing cover body.

Technical Field

The invention relates to a current converter with a direct-insertion wire harness waterproof structure for a new energy automobile.

Background

Disclosure of Invention

The invention aims to provide a current converter for a new energy automobile, which can realize good sealing of a fan wire harness and convenient replacement of a fan and has a direct-insertion wire harness waterproof structure, and solves the problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: current converter for new energy automobile with formula pencil waterproof construction cut straightly, including casing and the PCB board in the casing and the outer fan of casing, the fan is connected with the pencil that is used for getting the electricity, the through-hole inside and outside the casing that link up of seting up on the casing, on the PCB board corresponding to the inner rigidity of through-hole has the socket, and the through-hole internal seal cooperation of casing has sealed lid, and sealed lid internal seal cooperation has the sealed end cap of making by elastic material, in the pencil passed sealed end cap back entering casing, sealed cooperation between pencil and sealed end cap, this end electricity that the pencil is located the casing is connected with the plug, the plug is fixed with sealed lid, the free end of plug with the socket is inserted the distribution electricity and is connected, and the plug is the no buckle cooperation with the. According to the invention, the end of the wire harness positioned in the shell is directly provided with the plug to be matched with the socket on the PCB, so that the plug and the socket can be inserted and matched while the sealing cover is assembled, and the sealing cover can ensure the reliable electric connection of the plug and the socket after the sealing cover is assembled and fixed with the shell; when the fan assembly needs to be replaced, the fan assembly and the sealing cover can be separated from the shell only by detaching the sealing cover from the shell, the shell does not need to be opened, and the replacement and the assembly are very convenient. 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.

Preferably, the sealing cover comprises a body and a convex body integrally manufactured with the body, the convex body is matched with a through hole in the shell, the sealing cover is provided with a plurality of plug mounting holes, each plug mounting hole is internally provided with the corresponding sealing plug, the sealing plugs are connected with the plug mounting holes in a sealing mode, the sealing plugs are provided with threading holes for the threads to penetrate through, the plugs are fixed to the end portions of the convex body of the sealing cover, and the threading holes are connected with the threads in a sealing mode. The convex body is matched with the through hole in the shell to realize the positioning of the sealing cover on the shell, and the convex body can play a role in supporting and fixing the plug.

Preferably, the sealing cover body is provided with a groove corresponding to the periphery of the root of the convex body and used for accommodating the sealing ring, and the sealing ring which can be matched with the outer wall of the shell is arranged in the groove. When the sealing cover is assembled with the shell, the sealing ring is pressed between the sealing cover and the outer wall of the shell to realize sealing between the sealing cover and the shell.

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 invention has the advantages of solving the problem of good sealing of the fan wiring harness, realizing convenient replacement of the fan and the like.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a sectional view of the wire harness waterproofing structure of the present invention;

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

FIG. 4 is an isometric view of the outer end of the waterproof construction of the wire harness of the present invention;

fig. 5 is a schematic structural view of the sealing plug of the present invention.

Detailed Description

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

As shown in fig. 1, the current converter for the new energy automobile with the direct plug-in wire harness waterproof structure comprises a shell 16, a PCB 17 in the shell 16 and a fan 18 outside the shell, wherein the fan 18 is connected with a wire harness 19 for taking electricity, a through hole 21 which is formed in the shell and penetrates through the inside and the outside of the shell is formed, a socket 22 is fixed on the PCB 17 corresponding to the inner end of the through hole 21, a sealing cover 1 is hermetically matched in the through hole 21 of the shell, as shown in fig. 2, 3, 4 and 5, a sealing plug 3 is hermetically matched in the sealing cover 1, as shown in fig. 1, the wire harness 19 penetrates through the sealing plug and enters the shell 16, the wire harness is hermetically matched with the sealing plug, a plug 23 is electrically connected to the end of the wire harness in the shell, the plug is fixed with the sealing cover, a free end of the plug 23 is electrically connected with the socket 22 in an inserting.

As shown in fig. 2, 3, 4 and 5, the sealing cover 1 is made of nylon PA66+30% glass fiber material, the sealing cover 1 is connected with the casing in a sealing manner, the sealing cover 1 is of a diamond structure, the sealing cover 1 comprises a body 5 and a convex body 6 integrally manufactured with the body, the convex body 6 is matched with a through hole on the casing 16 (see fig. 1), a groove 7 for accommodating a sealing ring is arranged on the periphery of the root of the convex body of the body 5, a sealing ring 8 which can be matched with the outer wall of the casing is arranged in the groove 7, 4 convex cards 11 which are circumferentially distributed at intervals and protrude into the groove are arranged on the upper edge of the groove 7, and the convex cards 11 are clamped on the sealing ring. 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.