CN108923161B

CN108923161B - A charging gun capable of protecting pin terminals

Info

Publication number: CN108923161B
Application number: CN201810502247.1A
Authority: CN
Inventors: 徐忠良; 刘悦; 钟荣栋; 李同兵; 邱显葵; 叶胜军
Original assignee: Rocking Energy Intelligent Technology Co Ltd
Current assignee: Rocking Energy Intelligent Technology Co Ltd
Priority date: 2018-05-23
Filing date: 2018-05-23
Publication date: 2020-05-12
Anticipated expiration: 2038-05-23
Also published as: CN108923161A

Abstract

The invention discloses a charging gun capable of protecting a contact pin terminal, which comprises a gun body, a charging head, a contact pin terminal and an injection and suction mechanism, wherein the charging head is installed at the front end part of the gun body, the contact pin terminal is arranged in the charging head, an accommodating space is arranged in the charging head, and a flexible bag body is arranged in the accommodating space. Compared with the prior art, when the charging gun is in a non-use state, the fluid can be filled into the flexible bag body by the injection and suction mechanism, and the flexible bag body expands and extends to cover the outer side of the contact pin terminal and/or block the front port of the charging head, so that dust and water vapor can be prevented from being attached to the outer surface of the contact pin terminal, corrosion can be avoided, and the service life of the contact pin terminal can be prolonged. When needs use the rifle that charges to the car, annotate and inhale the mobile body resorption of mechanism in to the flexible bag body, flexible bag body shrink resets to accommodation space in, and flexible bag body does not influence the normal use of the rifle that charges.

Description

Can protect rifle that charges of contact pin terminal

Technical Field

The invention relates to the technical field of charging piles, in particular to a charging gun capable of protecting a contact pin terminal.

Background

The electric vehicle (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, and meets various requirements of road traffic and safety regulations. Because the electric automobile has smaller influence on the environment compared with the traditional automobile, the prospect of the electric automobile is widely seen. The popularization rate of the electric vehicle is higher and higher in recent years, and the problem of how to effectively charge the electric vehicle in time is solved. As a special device for timely charging products such as convenient electric vehicles, the charging pile receives wide attention and recognition once coming out.

The charging gun is an indispensable device for charging an electric vehicle, and particularly, a pin terminal (including a charging terminal and a communication terminal) in the charging gun is an indispensable key component for ensuring smooth charging. The contact pin terminal is located the rifle front end portion that charges and in the head, is the contact with the air, and dust in the air can fall on the contact pin terminal surface, and contact pin terminal surface area dust reinserts the car charging seat, can increase the frictional force between the jack of contact pin terminal and car charging seat for the wearing and tearing of contact pin terminal. Contact pin terminal and the steam direct contact of air, complicated acid or alkaline impurity can lead to the fact the corruption to contact pin terminal surface in the steam, makes terminal surface layer electric conductivity variation, and contact resistance grow during charging leads to generating heat seriously, shortens charging gun's life. Excessive water vapor accumulation can also shorten creepage distance and cause safety problems.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides the charging gun capable of protecting the pin terminals, which can isolate dust and water vapor, avoid corrosion and prolong the service life of the pin terminals.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a can protect rifle that charges of contact pin terminal, including the rifle body, charge head and contact pin terminal, the head that charges is installed at the front end portion of the rifle body, and the contact pin terminal sets up in the head that charges, characterized by:

an accommodating space is arranged in the charging head, and a flexible bag body is arranged in the accommodating space;

the flexible bag body is inflated and extended when the fluid is filled into the flexible bag body by the injection and suction mechanism, so that the outer side of the contact pin terminal is coated and/or a front port of the charging head is blocked;

and when the fluid in the flexible bag body is sucked back by the injection and suction mechanism, the flexible bag body is contracted and reset to the accommodating space.

Wherein, the injection and suction mechanism is a suction pump, and the fluid is gas.

Wherein the injection and suction mechanism is a liquid pump, and the fluid is liquid.

Wherein, the injection and suction mechanism is electrically connected with a pressure detection unit for detecting the air pressure in the flexible capsule body.

The charging head is provided with a mounting hole, a barrel and a supporting part are arranged in the mounting hole, the rear end part of the contact pin terminal is fixedly arranged on the barrel in a penetrating mode, the barrel is fixed with the inner wall of the mounting hole through the supporting part, and the containing space is located between the barrel and the inner wall of the mounting hole.

The supporting parts are arranged in at least two numbers and are circumferentially distributed around the outer side part of the cylinder body, and a channel for the flexible bag body to expand and pass through is reserved between every two adjacent supporting parts and between the inner side wall of the mounting hole and the outer side wall of the cylinder body.

The charging head is provided with a fixing piece, a flange is arranged on the outer side of the pin terminal and abuts against the rear end portion of the barrel, the fixing piece abuts against the flange, and the fixing piece is fixedly connected with the charging head.

The fixing piece comprises a cylindrical base body and an inner convex barrel arranged inside the base body, the inner convex barrel abuts against a flange of the pin terminal, the base body is provided with a conveying through hole, and the injection and suction mechanism is communicated with the flexible bag body through the conveying through hole.

Wherein, the pedestal with through screw fixed connection between the head charges.

Wherein sealing elements are arranged between the flange and the charging head and between the flange and the inner convex barrel.

The flexible bag body comprises a connecting body and more than two expansion bodies which are mutually integrally communicated, the connecting body comprises an inner sleeve and an outer sleeve, the expansion bodies are communicated with a space between the inner sleeve and the outer sleeve, the periphery of a rear port of the inner sleeve is sealed and pressed by the inner convex cylinder and the flange together, the periphery of the rear port of the outer sleeve is sealed and pressed by the seat body and the rear end part of the mounting hole together, the connecting body is connected with the injection and suction mechanism, and the expansion bodies can expand, extend and cover the outer side of the contact pin terminal forward and/or plug the front port of the charging head.

The invention has the beneficial effects that:

Drawings

Fig. 1 is a perspective view of a charging gun capable of protecting a pin terminal in an embodiment.

Fig. 2 is a perspective view of a part of the structure in the embodiment.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a perspective view of the charging head in the embodiment.

Fig. 5 is a perspective view of another angle of the charging head in the embodiment.

Fig. 6 is a perspective view of the fixing member in the embodiment.

Reference numerals:

a gun body 1;

a cable 2;

the charging head 3, the mounting hole 31, the cylinder 32, the support 33, the rear end 311 of the mounting hole;

pin terminal 4, flange 41, seal 42;

the fixing piece 5, a seat body 51, an inner convex cylinder 52, a conveying through hole 53 and a connector 54;

an accommodation space 6;

a transition passage 7;

the flexible bag body 8, the connecting body 81, the inner sleeve 811, the outer sleeve 812 and the expansion body 82;

an injection and suction mechanism 9, a pressure detection unit 91, and a connection port 92.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments and the accompanying drawings.

The rifle that charges that can protect contact pin terminal of this embodiment, as shown in fig. 1 to 6, including the rifle body 1, cable 2, charge first 3 and contact pin terminal 4, the cable 2 wears to locate the rifle body 1 and is connected with contact pin terminal 4 electricity, and the head 3 that charges is installed at the preceding tip of the rifle body 1, and contact pin terminal 4 sets up in charging first 3, is provided with accommodation space 6 in the head 3 that charges, and accommodation space 6 is provided with flexible utricule 8. The charging gun further comprises an injection and suction mechanism 9 for filling the flexible bag body 8 with the fluid or sucking the fluid in the flexible bag body 8 back, when the injection and suction mechanism 9 fills the flexible bag body 8 with the fluid, the flexible bag body 8 expands and extends to coat the outer side of the contact pin terminal 4 and/or block the port of the charging head 3; when the fluid in the flexible bag body 8 is sucked back by the injection and suction mechanism 9, the flexible bag body 8 is contracted and reset to the accommodating space 6. The injection and suction mechanism 9 may be a suction and suction pump providing a fluid that is a gas or a liquid pump providing a fluid that is a liquid. The gas has good insulating effect and low sealing requirement, and even if the flexible capsule body 8 leaks gas, short circuit fault can not occur. If the fluid is a liquid, the liquid, preferably a non-conductive liquid such as silicone oil, cools the pin terminals 4 after filling the flexible bladder 8. But the sealing requirements for the flexible bladder 8 are high and it is desirable to prevent liquid leakage. The injection and suction mechanism 9 is electrically connected to a pressure detection unit 91, such as a pressure sensor, for detecting the air pressure in the flexible bag 8, and can detect the pressure of the fluid filled in the flexible bag 8, or set a preset threshold, and automatically stop the filling of air or liquid after the pressure reaches the preset threshold. When the fluid is injected into the flexible bladder 8 by the injection and suction mechanism 9, it is determined whether or not the injection of the fluid is stopped based on a pressure threshold set by the pressure detection unit 91. When the injection and suction mechanism 9 sucks back the fluid to the flexible capsule 8 to retract the flexible capsule 8, whether the fluid is continuously sucked back is also judged according to the pressure threshold value set by the pressure detection unit 91. Through above mode, can control the inflation degree and the shrink degree of flexible utricule 8 to satisfy the effect and the demand of charging of protection contact pin terminal 4.

In this embodiment, the mounting hole 31 has been seted up to the head 3 that charges, is provided with integrated into one piece's barrel 32 and three supporting part 33 in the mounting hole 31, and three supporting part 33 are around the outside portion circumference evenly distributed of barrel 32, and the rear end portion of contact pin terminal 4 wears to establish and is fixed in barrel 32, fixes through supporting part 33 between the inner wall of barrel 32 and mounting hole 31. The outside of the pin terminal 4 is provided with a flange 41. The rear end of the charging head 3 is provided with a fixing part 5, the fixing part 5 comprises a cylindrical seat body 51 and an inner convex cylinder 52 arranged inside the seat body 51, the inner convex cylinder 52 abuts against a flange 41 of the pin terminal 4, the flange 41 abuts against the rear end of the cylinder body 32, thereby the pin terminal 4 is fixed between the seat body 51 and the charging head 3 through screw fixed connection, a plurality of grooves are arranged outside the seat body 51 in fig. 3 so as to facilitate the installation of screws, and sealing parts 42 are arranged between the flange 41 and the charging head 3 and between the flange 41 and the inner convex cylinder 52. The seat body 51 is provided with a conveying through hole 53, the injection and suction mechanism 9 is communicated with the flexible capsule body 8 through the conveying through hole 53, and the conveying through hole 53 is provided with a connector 54 for connecting the injection and suction mechanism 9. The outer side wall of the cylinder 32, the inner wall of the mounting hole 31, the rear end face of the support 33, the inner side wall of the mounting hole 31 and the fixing piece 5 jointly enclose a containing space 6, and three transition channels 7 for the flexible bag body 8 to expand and pass through are reserved between the inner side wall of the mounting hole 31 and the outer side wall of the cylinder 32 and between two adjacent support 33. Since the fixture 5 is detachable from the charging head 3, the flexible bladder 8 is easily incorporated.

In this embodiment, the flexible bag 8 includes a connector 81 and three expansion bodies 82 that are integrally communicated with each other, the connector 81 is communicated with the injection and suction mechanism 9 through a connector 54, and the injection and suction mechanism 9 is provided with a connector 92 corresponding to the connector 54. The connector 81 comprises an inner sleeve 811 and an outer sleeve 812, an expansion body 82 is communicated with a space between the inner sleeve 811 and the outer sleeve 812, a conveying through hole 53 is also communicated with a space between the inner sleeve 811 and the outer sleeve 812, the rear end part of a pin terminal 4 penetrates through the inner sleeve 811, the periphery of a rear port of the inner sleeve 811 is compressed and sealed by the inner convex cylinder 52 and the flange 41 together, the periphery of a rear port of the outer sleeve 812 is compressed and sealed by the front end face of the seat body 51 and the rear end part 311 of the mounting hole 31 together, external vapor-liquid dust can be prevented from entering the charging gun through the transition channel 7, and a good sealing effect is achieved. The periphery of the rear ports of the inner housing 811 and the outer housing 812 may be slightly rolled outward for ease of installation. The end parts of the three expansion bodies 82 are located in the transition channel 7, when the injection and suction mechanism 9 inflates or fills liquid into the flexible bag body 8, the three expansion bodies 82 respectively expand forwards and deform to pass through the transition channel 7 between the two adjacent supporting parts 33, and expand transversely until being squeezed mutually, so that the outer sides of the pin terminals 4 are coated, and/or the ports of the charging heads 3 are blocked.

The flexible bag body 8 has two types, one type is inelastic, and the flexible bag body is directly expanded after being inflated. The other type is elastically deformable, the wall thickness is non-uniform, the flexible bag body 8 becomes thin after being inflated, the flexible bag body is easier to recover and reset into the accommodating space 6 after being inhaled, the wall thickness of the flexible bag body 8 is non-uniform, different expansion deformation degrees of different parts after being inflated and expanded can be adjusted, the outer side surface of the terminal can be better coated, or the end hole of the charging head 3 can be better blocked in sealing performance.

Compared with the prior art, the rifle that charges of this embodiment is when non-user state, annotates and inhales mechanism 9 and can fill gas or liquid to flexible utricule 8, flexible utricule 8 inflation extends, support the inside wall of mounting hole 31 and the surface of contact pin terminal 4 after the expansion of flexible utricule 8, the outside of cladding contact pin terminal 4 promptly, and/or plug the port of the head 3 that charges, consequently can avoid dust steam to attach at the outward appearance of contact pin terminal 4, avoid corroding, extension contact pin terminal 4's life. And the flexible bag body 8 can also push the dust water vapor in the charging head 3 outwards in the expansion process to play a certain cleaning role or clean the surface of the contact pin terminal 4. When needs use the rifle that charges to the car, annotate and inhale mechanism 9 and to the gas or the liquid resorption in the flexible utricule 8, flexible utricule 8 contracts and resets to accommodation space 6 in, and flexible utricule 8 does not influence the normal use of the rifle that charges.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A charging gun capable of protecting a pin terminal, comprising a gun body, a charging head and a pin terminal, the charging head is mounted on the front end of the gun body, and the pin terminal is arranged in the charging head, it is characterized in that:

An accommodating space is arranged in the charging head, and a flexible capsule is arranged in the accommodating space;

It also includes an inhalation mechanism for inhaling fluid, when the infusion mechanism fills the flexible bladder with the fluid, the flexible bladder expands and extends, thereby covering the outside of the pin terminal, and / or block the front port of the charging head;

After the inhalation and suction mechanism sucks back the fluid in the flexible bladder, the flexible bladder shrinks and returns to the accommodating space.

2 . The charging gun capable of protecting pin terminals according to claim 1 , wherein the injection and suction mechanism is an air suction and suction pump, and the fluid is gas. 3 .

3 . The charging gun capable of protecting pin terminals according to claim 1 , wherein the injection and suction mechanism is a liquid pump, and the fluid is liquid. 4 .

4 . The charging gun capable of protecting pin terminals according to claim 1 , wherein the charging head is provided with a mounting hole, the mounting hole is provided with a cylinder and a support portion, and the pin The rear end part of the terminal is penetrated and fixed on the cylinder body, the cylinder body and the inner wall of the installation hole are fixed by the support part, and the accommodating space is located between the cylinder body and the inner wall of the installation hole between.

5 . The charging gun capable of protecting pin terminals according to claim 4 , wherein at least two supporting parts are provided, and the at least two supporting parts are distributed circumferentially around the outer part of the cylinder body. 6 . , a channel for the flexible bladder to expand through is left between two adjacent support parts, between the inner side wall of the installation hole and the outer side wall of the cylinder.

6 . The charging gun capable of protecting pin terminals according to claim 4 , wherein the charging head is provided with a fixing member, the outer side of the pin terminals is provided with a flange, and the flange is arranged against 6 . The rear end portion of the cylinder body is held, the fixing member is pressed against the flange, and the fixing member is fixedly connected with the charging head.

7 . The charging gun capable of protecting pin terminals according to claim 6 , wherein the fixing member comprises a cylindrical seat body and an inner convex tube disposed inside the seat body, and the The inner protruding cylinder is pressed against the flange of the pin terminal, the seat body is provided with a conveying through hole, and the infusion mechanism and the flexible bladder are communicated through the conveying through hole.

8 . The charging gun capable of protecting pin terminals according to claim 7 , wherein: the flange and the charging head and between the flange and the inner convex barrel are all arranged. 9 . There are seals.

9 . The charging gun capable of protecting pin terminals according to claim 1 , wherein the injection and suction mechanism is electrically connected with a pressure detection unit for detecting the air pressure in the flexible capsule. 10 .

10 . The charging gun capable of protecting pin terminals according to claim 7 , wherein the flexible bag body comprises a connecting body and two or more expansion bodies that are integrally communicated with each other, and the connecting body includes an inner body. 11 . A sleeve and an outer sleeve, the inflatable body communicates with the space between the inner sleeve and the outer sleeve, the periphery of the rear port of the inner sleeve is sealed and compressed by the inner convex cylinder and the flange, and the rear end of the outer sleeve is sealed and compressed together. The peripheral edge of the port is jointly sealed and pressed by the seat body and the rear end of the installation hole, the connecting body is connected with the injection and suction mechanism, and the expansion body can expand and extend forward to cover the pin terminal. outside, and/or block the front port of the charging head.