CN110654257A

CN110654257A - Waterproof construction and rifle that charges

Info

Publication number: CN110654257A
Application number: CN201810689233.5A
Authority: CN
Inventors: 王志远; 于定管
Original assignee: SHENZHEN BIFOXS INDUSTRIAL DESIGN Co Ltd
Current assignee: SHENZHEN BIFOXS INDUSTRIAL DESIGN Co Ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2020-01-07

Abstract

The invention provides a waterproof structure and a charging gun, wherein the waterproof structure comprises a sealing assembly arranged in a cavity and a lead fixing base matched with a shell and used for clamping the sealing assembly together, a power line passes through the lead fixing base and is connected with the shell in a locking manner, the sealing assembly comprises a sealing ring arranged in the cavity and made of elastic sealing materials and a hard gasket formed in a double-color mode with the sealing ring, the hard gasket is made of hard materials, the hard gasket is arranged in the cavity and connected with the shell, the sealing ring is clamped between the hard gasket and the lead fixing base, a first through hole for leading a power line to the cavity is formed in the sealing ring, the hole wall of the first through hole is in sealing and pressing fit with the power line, and the outer side wall of the sealing ring is in abutting fit with the. The waterproof structure can prevent rainwater from entering the cavity from the joint of the outer wall of the sealing ring and the inner wall of the shell, and further can prevent potential safety hazards caused by the use of the charging gun.

Description

Waterproof construction and rifle that charges

Technical Field

The invention belongs to the technical field of new energy automobiles, and particularly relates to a waterproof structure and a charging gun.

Background

In recent years, with the rapid development of new energy technology, the popularity of electric vehicles is higher and higher, the charging pile has a very important role as a necessary matching infrastructure for developing the electric vehicles, and the charging gun is used for connecting the charging pile and the electric vehicles and charging the electric vehicles according to the role.

Due to the influence of external factors such as weather and environment, water can easily enter the charging gun, and potential safety hazards are caused.

Disclosure of Invention

The invention aims to provide a waterproof structure, and aims to solve the technical problem of potential safety hazard caused by the fact that water is easy to enter the interior of a charging gun in the prior art.

The invention is realized in such a way that the waterproof structure is used for connecting a power line into a cavity formed by a shell of a charging gun, and comprises a sealing assembly arranged in the cavity and a lead fixing base matched with the shell to clamp the sealing assembly together, wherein the lead fixing base is used for the power line to pass through and is in locking connection with the shell, the sealing assembly comprises a sealing ring arranged in the cavity and made of elastic sealing materials and a hard gasket formed with the sealing ring in a two-color mode, the hard gasket is made of hard materials and is connected with the shell in the cavity, the sealing ring is clamped between the hard gasket and the lead fixing base, a first through hole for leading the power line into the cavity is formed in the sealing ring, the hole wall of the first through hole is in sealing and pressure joint fit with the power line, and the outer side wall of the sealing ring is in.

Furthermore, waterproof construction still includes the locking mechanism who is fixed in on the wire fixed baseplate, and locking mechanism is including being fixed in public chuck and the female chuck on the wire fixed baseplate, and public chuck and the locking cooperation of female chuck just press from both sides the power cord jointly.

Furthermore, the wire fixing base comprises a pressing part in press fit with the sealing ring, the pressing part is provided with a pressing surface facing the sealing ring and in press fit with the sealing ring and a sliding installation surface arranged back to back with the pressing surface, and a first dovetail groove in sliding fit with the male chuck and a second dovetail groove in sliding fit with the female chuck are formed in the sliding installation surface of the wire fixing base.

Further, the wire fixing base further comprises two mounting walls which are fixed in the sliding mounting face and arranged in a straight line, the two mounting walls protrude out of the sliding mounting face, two end portions of the male chuck are connected with the two mounting walls in a one-to-one correspondence mode at one sides of the two mounting walls, two end portions of the female chuck are connected with the two mounting walls in a one-to-one correspondence mode at the other sides of the two mounting walls, and the male chuck and the female chuck are connected with the two mounting walls in a locking mode through locking pieces.

Further, the male chuck and the female chuck jointly form a second through hole for the power line to pass through, the hole wall of the second through hole is provided with a plurality of limiting bulges in a protruding mode towards the axis direction of the second through hole, and the limiting bulges are arranged on the male chuck and the female chuck.

Furthermore, the waterproof structure also comprises waterproof gaskets clamped between the two end parts of the male chuck and the two mounting wall brackets and waterproof gaskets arranged between the two end parts of the female chuck and the mounting walls.

Further, the junction of the sealing ring and the inner wall of the shell protrudes outwards and is formed with a plurality of sealing bulges, and the sealing bulges are in compression joint fit with the inner wall of the shell.

Furthermore, the joint of the sealing ring and the power line protrudes outwards and is formed with a plurality of waterproof bulges, and the waterproof bulges are matched with the power line in a compression joint mode.

The invention also provides a charging gun which comprises the waterproof structure.

Further, the charging gun also comprises a charging pin for charging.

Compared with the prior art, the invention has the technical effects that: the sealing ring is provided with a first through hole for leading a power line to the cavity, the hole wall of the first through hole is in sealing press fit with the power line, the waterproof performance of the joint of the sealing ring and the power line can be improved, rainwater is prevented from entering the cavity from the joint of the sealing ring and the power line, the outer side wall of the sealing ring is in butt fit with the inner wall of the shell, the waterproof performance of the joint of the sealing ring and the shell can be improved, and rainwater is prevented from entering the cavity from the joint of the sealing ring and the inner wall of the shell, so that the waterproof structure of the embodiment of the invention can avoid electric leakage caused by rainwater entering the cavity of the shell, and further avoid potential safety hazards caused by electric leakage when the charging gun; the hard gasket is made of hard materials and has stronger structural strength, when the hard gasket is acted by external force, the deformation is smaller, the lead fixing base is in locking connection with the shell through a fastener, therefore, locking force exists between the lead fixing base and the shell, and the sealing ring is clamped between the hard gasket and the lead fixing base, therefore, the locking force can ensure that the hard gasket is matched with the lead fixing base and clamps the sealing ring together, the sealing ring is elastically deformed under the clamping action of the hard gasket and the lead fixing base, the outer side wall of the sealing ring is more tightly pressed and connected with the inner wall of the shell, rainwater is prevented from entering a cavity from the joint of the outer side wall of the sealing ring and the inner wall of the shell, the waterproof grade of the joint of the outer side wall of the sealing ring and the inner wall of the shell can be improved, and the hole wall of the first through hole can be more tightly pressed and, therefore, the waterproof structure of the embodiment of the invention can avoid electric leakage caused by rainwater entering the cavity of the shell, and further avoid potential safety hazards caused by electric leakage when the charging gun is used.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a charging gun according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of a charging gun according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structural view of a charging gun according to an embodiment of the present invention.

Fig. 4 is a perspective view of a wire fixing base according to an embodiment of the present invention.

Description of reference numerals:

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to 4, an embodiment of the present invention provides a waterproof structure for connecting a power line 51 to a cavity 42 formed by a housing 41 of a charging gun, as shown in fig. 1 to 3, the waterproof structure includes a sealing assembly installed in the cavity 42 and a wire fixing base 11 cooperating with the housing 41 to clamp the sealing assembly together, the wire fixing base 11 is used for the power line 51 to pass through and lock-connect with the housing 41, the sealing assembly includes a sealing ring 21 installed in the cavity 42 and made of an elastic sealing material and a hard gasket 25 bi-color molded with the sealing ring 21, the hard gasket 25 is made of a hard material, the hard gasket 25 is located in the cavity 42 and connected with the housing 41, the sealing ring 21 is sandwiched between the hard gasket 25 and the wire fixing base 11, the sealing ring 21 is formed with a first through hole 23 for the power line 51 to pass through the cavity 42, a hole wall of the first through hole 23 is in sealing and press-jointing with the power line, the outer side wall of the seal ring 21 is in abutting engagement with the inner wall of the housing 41.

In this embodiment, before the power line 51 is connected to the housing 41, the waterproof structure needs to be assembled, specifically, the wire fixing base 11 and the sealing assembly are inserted into the power line 51, the sealing ring 21 is disposed between the hard gasket 25 and the wire fixing base 11, one end of the power line 51 is inserted into the cavity 42 of the housing 41, the hard gasket 25, the sealing ring 21 and the wire fixing base 11 are integrated on the power line 51 and are installed into the cavity 42 together with the power line 51, the hard gasket 25 is in contact with and connected to the inner wall of the housing 41, the wire fixing base 11 is locked and connected to the inner wall of the housing 41 by a fastening member (not shown), and the fastening member sequentially passes through the wire fixing base 11, the sealing ring 21 and the hard gasket 25.

In this embodiment, the sealing ring 21 is formed with a first through hole 23 through which the power supply line 51 is communicated with the cavity 42, and the hole wall of the first through hole 23 is in sealing press fit with the power supply line 51, so that the waterproof performance of the joint between the sealing ring 21 and the power supply line 51 can be improved, rainwater is prevented from entering the cavity 42 from the joint between the sealing ring 21 and the power supply line 51, the outer side wall of the sealing ring 21 is in abutting fit with the inner wall of the housing 41, the waterproof performance of the joint between the sealing ring 21 and the housing 41 can be improved, and rainwater is prevented from entering the cavity 42 from the joint between the sealing ring 21 and the inner wall of the housing 41.

In this embodiment, the hard gasket 25 is made of a hard material, and has a strong structural strength, and when subjected to an external force, the deformation amount is small, because the wire fixing base 11 and the housing 41 are locked and connected by a fastener, a locking force exists between the wire fixing base 11 and the housing 41, and because the sealing ring 21 is clamped between the hard gasket 25 and the wire fixing base 11, the locking force can enable the hard gasket 25 and the wire fixing base 11 to cooperate and clamp the sealing ring 21 together, the sealing ring 21 is elastically deformed by the clamping action of the hard gasket 25 and the wire fixing base 11, the outer side wall of the sealing ring 21 can be more tightly pressed and connected with the inner wall of the housing 41, so that rainwater is prevented from entering the cavity 42 from the joint between the outer side wall of the sealing ring 21 and the inner wall of the housing 41, and the waterproof grade of the joint between the outer side wall of the sealing ring 21 and the inner wall of the housing 41 can, the wall of the first through hole 23 can be pressed against the power line 51 more tightly, so that rainwater is prevented from entering the cavity 42 from the joint of the sealing ring 21 and the power line 51, and the waterproof grade of the joint of the sealing ring 21 and the power line 51 can be improved.

In this embodiment, the hard gasket 25 and the seal ring 21 are formed in two colors, so that a joint surface between the hard gasket 25 and the seal ring 21 can be avoided, and further, the waterproof performance can be prevented from being reduced due to the joint surface between the hard gasket 25 and the seal ring 21.

Further, as shown in fig. 2, the housing 41 further includes a plurality of mounting structures 43 disposed in the cavity 42, the fastening members and the mounting structures 43 are disposed in a one-to-one correspondence, the fastening members sequentially penetrate through the wire fixing base 11, the sealing ring 21 and the hard gasket 25 to be connected to the mounting structures 43, and the fixing base, the sealing ring 21 and the hard gasket 25 can be mounted on the housing 41.

Further, the waterproof structure further comprises a locking mechanism fixed on the wire fixing base 11, the locking mechanism comprises a male chuck 31 and a female chuck 32 fixed on the wire fixing base 11, and the male chuck 31 and the female chuck 32 are in locking fit and jointly clamp the power line 51.

In this embodiment, the male collet 31 and the female collet 32 are locked to cooperate with each other, so that the female collet 32 and the male collet 31 clamp the power cord 51 together, which can increase the stability of the connection between the power cord 51 and the sealing ring 21, when an external force acts on the portion of the power cord 51 exposed out of the cavity 42, the power cord 51 is clamped by the male collet 31 and the female collet 32, which can prevent the power cord 51 and the sealing ring 21 from moving relatively, thereby increasing the waterproof performance of the connection between the sealing ring 21 and the power cord 51, specifically, the waterproof performance of the sealing and crimping connection between the hole wall of the first through hole 23 and the power cord 51 can be increased. Meanwhile, the sealing ring 21 is stably connected with the power line 51, so that the power line 51 can be prevented from driving the sealing ring 21 to move, the relative movement between the sealing ring 21 and the inner wall of the shell 41 can be avoided, and the waterproofness of the joint of the sealing ring 21 and the inner wall of the shell 41 can be improved.

Further, as shown in fig. 2 and 4, the wire fixing base 11 includes a press contact portion 12 press-fitted with the seal ring 21, the press contact portion 12 has a press contact surface 13 press-fitted with the seal ring 21 toward the seal ring 21 and a slide mounting surface 15 arranged opposite to the press contact surface 13, and the wire fixing base 11 has a first dovetail groove 16 slide-fitted with the male collet 31 and a second dovetail groove 17 slide-fitted with the female collet 32 formed in the slide mounting surface 15.

In this embodiment, when the male collet 31 is mounted on the sliding mounting surface 15, the male collet 31 is in sliding fit with the first dovetail groove 16, so that a quick guiding effect can be achieved, and further, the mounting time of the male collet 31 can be saved, and since the male collet 31 is matched with the first dovetail groove 16, the male collet 31 can be prevented from moving in a direction perpendicular to the sliding mounting surface 15, the connection stability of the male collet 31 and the wire fixing base 11 can be improved, and further, the mounting stability of the power cord 51 can be improved, and therefore, the waterproof performance of the waterproof structure can be improved.

Similarly, when installing female chuck 32 to slidable mounting face 15, female chuck 32 and second dovetail 17 sliding fit, can play the effect of quick direction, and then can practice thrift female chuck 32's installation time, and because female chuck 32 can prevent female chuck 32 along the direction motion of perpendicular to slidable mounting face 15 with the cooperation of second dovetail 17, can improve the stability that female chuck 32 and wire fixed baseplate 11 are connected, and then can improve the stability of the installation of power cord 51, therefore, can improve waterproof construction's waterproof performance.

Further, as shown in fig. 4, a rib 14 is provided in the wire fixing base 11 in the pressing surface 13, the rib 14 extends annularly and is engaged with the fastener in a clearance manner, and the rib 14 is press-fitted with the seal ring 21. In this embodiment, when rainwater flows to the connection between the sealing ring 21 and the wire fixing base 11 through the gap between the wire fixing base 11 and the inner wall of the housing 41, the protruding rib 14 and the sealing ring 21 are in press fit to prevent the rainwater from flowing to the connection between the power line 51 and the sealing ring 21 along the pressing surface 13, so as to improve the waterproof performance of the connection between the sealing ring 21 and the wire fixing base 11.

Further, as shown in fig. 2, the wire fixing base 11 further includes two mounting walls 18 fixed in the sliding mounting surface 15 and arranged linearly, the two mounting walls 18 protrude out of the sliding mounting surface 15, two end portions of the male collet 31 are connected with the two mounting walls 18 on one side of the two mounting walls 18 in a one-to-one correspondence manner, two end portions of the female collet 32 are connected with the two mounting walls 18 on the other side of the two mounting walls 18 in a one-to-one correspondence manner, and the male collet 31 and the female collet 32 are connected with the two mounting walls 18 in a locking manner through locking members (not shown).

Further, as shown in fig. 2, the two locking members are disposed parallel to the sliding attachment surface 15, and prevent the male and

female clips

31 and 32 from moving relative to the sliding attachment surface 15 in any direction.

Further, as shown in fig. 2, the male collet 31 and the female collet 32 together form a second through hole 33 for passing the power cord 51, a plurality of limiting protrusions 34 are provided on the wall of the second through hole 33 in a protruding manner in the axial direction of the second through hole 33, and the plurality of limiting protrusions 34 are provided on the male collet 31 and the female collet 32. In this embodiment, the limiting protrusion 34 is engaged with the power line 51, so as to prevent the power line 51 from moving relative to the sealing ring 21, and further improve the waterproof performance of the waterproof structure.

Further, the waterproof structure further includes waterproof gaskets (not shown) interposed between the two end portions of the male collet 31 and the brackets of the two mounting walls 18, and waterproof gaskets (not shown) interposed between the two end portions of the female collet 32 and the mounting walls 18.

Further, as shown in fig. 2, the joint of the seal ring 21 and the inner wall of the housing 41 is outwardly protruded and formed with a plurality of seal protrusions 22, and the plurality of seal protrusions 22 are press-fitted with the inner wall of the housing 41. The press-fit engagement of the plurality of sealing protrusions 22 with the inner wall of the housing 41 can improve the waterproofness of the junction of the grommet 21 and the power cord 51.

Further, as shown in fig. 2, the connection portion of the sealing ring 21 and the power line 51 protrudes outward and is formed with a plurality of waterproof protrusions 24, and the plurality of waterproof protrusions 24 are press-fitted with the power line 51. The waterproof protrusions 24 are in press fit with the power cord 51, so that the waterproof performance of the joint of the sealing ring 21 and the inner wall of the housing 41 can be improved.

The embodiment of the invention also provides a charging gun which comprises the waterproof structure.

Further, the charging gun further includes a charging pin (not numbered) for charging.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A waterproof structure is used for connecting a power line into a cavity formed by a shell of a charging gun, and is characterized in that the waterproof structure comprises a sealing assembly arranged in the cavity and a wire fixing base matched with the shell and clamping the sealing assembly together, the wire fixing base is used for the power line to pass through and be in locking connection with the shell, the sealing assembly comprises a sealing ring arranged in the cavity and made of elastic sealing materials and a hard gasket formed by the sealing ring in a double-color mode, the hard gasket is made of hard materials, the hard gasket is arranged in the cavity and connected with the shell, the sealing ring is clamped between the hard gasket and the wire fixing base, a first through hole for the power line to pass through is formed in the sealing ring, and the hole wall of the first through hole is in sealing and crimping fit with the power line, and the outer side wall of the sealing ring is in butt fit with the inner wall of the shell.

2. The waterproof structure according to claim 1, further comprising a locking mechanism fixed to the wire fixing base, wherein the locking mechanism comprises a male collet and a female collet fixed to the wire fixing base, and the male collet is in locking engagement with the female collet and jointly clamps the power line.

3. The waterproof structure according to claim 2, wherein the wire fixing base includes a press-fit portion press-fitted to the seal ring, the press-fit portion having a press-fit surface press-fitted to the seal ring toward the seal ring and a slide-mounting surface arranged opposite to the press-fit surface, and the wire fixing base has a first dovetail groove slide-fitted to the male collet and a second dovetail groove slide-fitted to the female collet defined in the slide-mounting surface.

4. The waterproof structure according to claim 2 or 3, wherein the wire fixing base further includes two mounting walls that are fixed in the sliding mounting surface and arranged linearly, the two mounting walls protrude from the sliding mounting surface, two end portions of the male clip are connected to the two mounting walls one-to-one at one side of the two mounting walls, two end portions of the female clip are connected to the two mounting walls one-to-one at the other side of the two mounting walls, and the male clip and the female clip are connected to the two mounting walls by locking members.

5. The waterproof structure according to claim 4, wherein the male clip and the female clip together form a second through hole for the power line to pass through, a plurality of limiting protrusions are provided on a wall of the second through hole in a protruding manner in an axial direction of the second through hole, and the plurality of limiting protrusions are provided on the male clip and the female clip.

6. The waterproof structure according to claim 5, further comprising waterproof gaskets interposed between both end portions of the male clip and the two mounting wall brackets, and waterproof gaskets interposed between both end portions of the female clip and the mounting walls.

7. The waterproof structure according to any one of claims 1 to 3, wherein a junction of the seal ring with the inner wall of the housing is projected outward and formed with a plurality of sealing projections, which are press-fitted with the inner wall of the housing.

8. The waterproof structure according to any one of claims 1 to 3, wherein a joint of the seal ring with the power supply line is protruded outward and formed with a plurality of waterproof protrusions, which are press-fitted with the power supply line.

9. A charging gun characterized by comprising the waterproof structure according to any one of claims 1 to 8.

10. The charging gun of claim 9, further comprising a charging pin for charging.