A general anti-fooling structure for high-voltage connectors

Abstract

The present invention discloses a general anti-fooling structure for high-voltage connectors, comprising a socket and a plug adapted to the socket. Among them, the socket includes a socket body and a socket key body disposed within the socket body, and the plug includes a plug body and a plug key body sleeved outside the plug body. The plug key body is adapted to the assembly orientation of the socket key body, and when the plug is inserted into the socket, the plug key body is inserted and matched with the socket key body, solving the technical problem in the prior art that the plug of the high-voltage connector is prone to be inserted into the wrong socket when there are a large number of high-voltage connectors.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage connectors, and particularly to a general anti-fooling structure for high-voltage connectors. Background Art

[0002] Facing the increasingly strict automotive exhaust emission standards in China and even the world today and the possible future energy crisis, major automobile manufacturers are focusing on researching and developing low-emission new energy technologies to adapt to this development trend. Among them, pure electric vehicles are one of the fields that major automobile manufacturers are vigorously researching and developing. High-voltage connectors composed of two parts, a socket and a plug, are widely used in the transmission high-voltage power lines between the main control box and the battery box, playing the role of connecting or disconnecting the high-voltage circuit. Since the number of high-voltage connectors used on a battery box or a main control box is relatively large (at least one for each of the positive and negative poles), and the plug needs to be inserted into the uniquely corresponding socket, it is easy to occur the phenomenon that the plug is inserted into the wrong socket when the number of high-voltage connectors is large.

[0003] When inserting the plug, in order to facilitate distinction, the color of the positive high-voltage connector is set to orange, and the negative high-voltage connector is black. When there are multiple positive or negative high-voltage connectors on the same battery box or main control box, they are distinguished by labels. These distinction methods provide convenience to a certain extent. However, in the actual use process, there are still some problems: Whether it is distinguished by color or label, if the plug is inserted into the wrong socket, it can still be inserted, and the error of inserting the plug into the wrong socket cannot be completely eliminated. Therefore, it is urgent to research and develop a general anti-fooling structure for high-voltage connectors. While maintaining the distinction of color and label, once the phenomenon of inserting the plug into the wrong socket occurs, the plug cannot be inserted into the socket, realizing anti-fooling from the structure to completely eliminate the occurrence of errors.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] The purpose of the present invention is to provide a general anti-fooling structure for high-voltage connectors to solve the technical problem that the high-voltage connector plug is easily inserted into the wrong socket when the number of high-voltage connectors is large in the existing technology.

[0006] The technical solution of the present invention is as follows:

[0007] A general anti-fooling structure for high-voltage connectors includes a socket and a plug adapted to the socket. Among them, the socket includes a socket body and a socket key body arranged inside the socket body, the plug includes a plug body and a plug key body sleeved outside the plug body, the plug key body is adapted to the assembly orientation of the socket key body, and when the plug is inserted into the socket, the plug key body is inserted and matched with the socket key body.

[0008] The general anti-fooling structure of the high-voltage connector, wherein a keyway groove is provided on the outer surface of the socket key body, and the keyway groove extends along the axial direction of the socket key body starting from the top end of the socket key body. The plug key body includes a convex key provided on the outer surface of the plug key body, and the convex key extends along the axial direction of the plug key body. When the plug is inserted into the socket, the convex key is inserted into the keyway groove on the socket key body to achieve plug-in fit; or,

[0009] A convex key is provided on the outer surface of the socket key body, and the convex key extends along the axial direction of the socket key body. The plug key body includes a keyway groove provided on the outer surface of the plug key body, and the keyway groove extends along the axial direction of the plug key body. When the plug is inserted into the socket, the convex key on the socket key body is inserted into the keyway groove on the plug key body to achieve plug-in fit.

[0010] The general anti-fooling structure of the high-voltage connector, wherein the keyway grooves on the outer surface of the socket key body are asymmetrically and non-uniformly distributed, and at least two keyway grooves are provided. The number and distribution positions of the convex keys are adapted to the keyway grooves; or, the keyway grooves on the outer surface of the plug key body are asymmetrically and non-uniformly distributed, and at least two keyway grooves are provided. The number and distribution positions of the convex keys are adapted to the keyway grooves.

[0011] The general anti-fooling structure of the high-voltage connector, wherein four keyway grooves are provided and are asymmetrically and non-uniformly distributed on the outer surface of the socket key body; or, four keyway grooves are provided and are asymmetrically and non-uniformly distributed on the outer surface of the plug key body.

[0012] The general anti-fooling structure of the high-voltage connector, wherein the bottom of the socket body includes a positioning groove portion, and the bottom of the socket key body also includes a positioning groove portion. The positioning groove portions are distributed circumferentially along the bottoms of the socket body and the socket key body. The protrusion of the positioning groove portion at the bottom of the socket body abuts against the recess of the positioning groove portion at the bottom of the socket key body to position the socket key body relative to the socket body. The bottom of the plug body includes a positioning groove portion, and the bottom of the plug key body also includes a positioning groove portion. The positioning groove portions are distributed circumferentially along the bottoms of the plug body and the plug key body. The protrusion of the positioning groove portion at the bottom of the plug body abuts against the recess of the positioning groove portion at the bottom of the plug key body to position the plug key body relative to the plug body.

[0013] The general anti-fooling structure of the high-voltage connector, wherein the socket includes a mounting plate, mounting holes are provided on the mounting plate, a socket buckle position is provided on the socket body, and a plug buckle is provided on the plug body. After the plug is inserted into the socket, the plug buckle is snapped into the socket buckle position.

[0014] The general anti-fooling structure of the high-voltage connector, wherein the socket body and the socket key body disposed inside the socket body are in interference fit, so that the socket key body is fixed inside the socket body.

[0015] The described general anti-misplugging structure of the high-voltage connector, wherein the socket key body is bonded inside the socket body.

[0016] Beneficial effects of the present invention: By providing a general anti-misplugging structure for high-voltage connectors, a keyway groove is provided on the socket, and a convex key is provided on the plug. When the plug is inserted into the socket, the convex key is inserted into the keyway groove to achieve plugging and mating. Only one plug can be inserted into the only socket that matches it, solving the technical problem that the high-voltage connector plug is prone to being inserted into the wrong socket in the prior art when there are a large number of high-voltage connectors; the anti-misplugging structure of the present invention has low cost, is economical and practical, has a simple structure, and is easy to promote. Description of the Drawings

[0017] Figure 1 is the overall structure schematic diagram of the present invention.

[0018] Figure 2 is the disassembled diagram of the overall structure of the present invention.

[0019] Figure 3 is the structure schematic diagram of the socket body in the present invention.

[0020] Figure 4 is the structure schematic diagram of the socket key body in the present invention.

[0021] Figure 5 is the structure schematic diagram of the plug in the present invention.

[0022] Figure 6 is the structure schematic diagram of the plug key body in the present invention.

[0023] Explanation of the Reference Numerals in the Drawings

[0024] Socket 1; Socket body 10; Socket buckle 100; Mounting plate 101; Socket key body 11; Keyway groove 110; Positioning groove part 111; Plug 2; Plug body 20; Plug buckle 201; Plug key body 21; Convex key 210 Detailed Embodiment

[0025] To make the purpose, technical solution and advantages of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the attached drawings and by way of examples.

[0026] Embodiment 1

[0027] Refer to Figure 1 and Figure 2, the present invention provides a general anti-fooling structure for high-voltage connectors, including a socket 1 and a plug 2 adapted to the socket 1. Among them, the socket 1 includes a socket body 10 and a socket key body 11 arranged inside the socket body 10, and the plug 2 includes a plug body 20 and a plug key body 21 sleeved outside the plug body 20. The plug key body 21 is adapted to the assembly orientation of the socket key body 11, and when the plug 2 is inserted into the socket 1, the plug key body 21 is inserted and matched with the socket key body 11. The socket 1 further includes a mounting plate 101, four mounting holes are provided on the mounting plate 101, a socket buckle 100 is provided on the socket body 10, and a plug buckle 201 is provided on the plug body 20. After the plug 2 is inserted into the socket 1, the plug buckle 201 is buckled into the socket buckle 100.

[0028] Specifically, referring to Figures 3 to 6 , a keyway groove 110 is provided on the outer surface of the socket key body 11. The keyway groove 110 extends along the axial direction of the socket key body 11 starting from the top end of the socket key body 11 and extends to a position near the bottom of the socket key body 11. The plug key body 21 includes a convex key 210 provided on the outer surface of the plug key body 21. The convex key 210 extends along the axial direction of the plug key body 21. When the plug 2 is inserted into the socket 1, the convex key 210 is inserted into the keyway groove 110 on the socket key body 11 to achieve insertion and matching. The convex key 210 enters the keyway groove 110 from the top end of the keyway groove 110, and the convex key 210 travels along the keyway groove 110 until the convex key 210 abuts against the end of the keyway groove 110, completing the insertion and matching between the socket key body 11 and the plug key body 21. By setting the insertion and matching of the convex key 210 and the keyway groove 110, the present invention enables the plug to be inserted only into the socket that is uniquely matched with it. For example, plug A can only be connected to socket A (because the assembly position of the convex key 210 of plug A is only adapted to the assembly position of the keyway groove 110 of socket A), and plug B can only be connected to socket B (the assembly position of the convex key 210 of plug B is only adapted to the assembly position of the keyway groove 110 of socket B). If a technician accidentally wants to insert plug A into socket B, the convex key 210 of plug A cannot be adapted to the keyway groove 110 on the socket in terms of assembly orientation. In this way, plug A cannot be inserted into socket B, fundamentally avoiding the situation where the plugs of high-voltage connectors are easily inserted into the wrong sockets when there are a large number of high-voltage connectors.

[0029] The key position grooves 110 on the outer surface of the socket key body 11 are asymmetrically and non-uniformly distributed. At least two key position grooves 110 are provided, and the number and distribution positions of the convex keys 210 are adapted to the key position grooves 110. In this embodiment, four key position grooves 110 are provided and are asymmetrically and non-uniformly distributed on the outer surface of the socket key body 11. When the A plug cannot be inserted into the B socket, if the operator does not buckle the plug buckle 201 into the socket buckle 100 and rotates the A plug by a certain angle and then inserts it into the B socket, there is a possibility that the A plug can be successfully inserted into the B socket when the key position grooves 110 are symmetrically and uniformly distributed (even if the A plug and the B socket should not be matched), and there is a risk of plugging the wrong socket. Therefore, in this embodiment, the key position grooves 110 are asymmetrically and non-uniformly distributed. Even if the operator does not buckle the plug buckle 201 into the socket buckle 100 and rotates the A plug by a certain angle, it still cannot be inserted into the B socket, ensuring that the plug can only be inserted when the convex keys 210 on the plug completely correspond to the key position grooves 110 on the socket, further improving the reliability of the anti-fooling structure and fundamentally eliminating the possibility of plugging the wrong socket.

[0030] Further, referring to Figure 3, the bottom of the socket body 10 includes a positioning groove portion 111, and the bottom of the socket key body 11 also includes a positioning groove portion 111. The positioning groove portion 111 is circumferentially distributed along the bottoms of the socket body 10 and the socket key body 11. The protrusion of the positioning groove portion 111 at the bottom of the socket body 10 abuts against the recess of the positioning groove portion 111 at the bottom of the socket key body 11 to position the socket key body 11 relative to the socket body 10. The bottom of the plug body 20 includes a positioning groove portion 111, and the bottom of the plug key body 21 also includes a positioning groove portion 111. The positioning groove portion 111 is circumferentially distributed along the bottoms of the plug body 20 and the plug key body 21. The protrusion of the positioning groove portion 111 at the bottom of the plug body 20 abuts against the recess of the positioning groove portion 111 at the bottom of the plug key body 21 to position the plug key body 21 relative to the plug body 20. In this embodiment, there are multiple assembly orientations for the socket key body 11 to be assembled within the socket body 10. For example, the first positioning groove portion 111 at the bottom of the socket body 10 abuts against the first positioning groove portion 111 at the bottom of the socket key body 11, or the socket key body 11 is rotated by an angle so that the first positioning groove portion 111 at the bottom of the socket body 10 abuts against the second positioning groove portion 111 at the bottom of the socket key body 11, and this is another assembly orientation at this time. Once the assembly orientation of the socket key body 11 relative to the socket body 10 is determined, the assembly orientation of the plug key body 21 that is used in matching is also determined. In the present invention, a plurality of positioning groove portions 111 are circumferentially arranged at the bottoms of the socket body 10 and the socket key body 11, enabling the socket key body 11 to have multiple assembly orientations within the socket body 10. One plug-socket group uses one assembly orientation, and different plug-socket groups use different assembly orientations. The multiple assembly orientations allow multiple groups of plug-sockets to be used simultaneously, which is applicable to the scenario where the number of high-voltage connectors is relatively large. In this embodiment, the number of assembly orientations of the socket key body 11 relative to the socket body 10 is at least 20 kinds.

[0031] Further, the socket body 10 and the socket key body 11 disposed within the socket body 10 are in interference fit, so that the socket key body 11 is fixed within the socket body 10.

[0032] As another embodiment of the present invention, the socket key body 11 is bonded within the socket body 10.

[0033] Embodiment 2

[0034] In this embodiment, a convex key is provided on the outer surface of the socket key body. The convex key extends along the axial direction of the socket key body. The plug key body includes a keyway groove provided on the outer surface of the plug key body. The keyway groove extends along the axial direction of the plug key body. When the plug is inserted into the socket, the convex key on the socket key body is inserted into the keyway groove on the plug key body to achieve a plug-in fit. The convex key enters the keyway groove from the top end of the keyway groove, and the convex key travels along the keyway groove until the convex key abuts against the end of the keyway groove, completing the plug-in fit between the socket key body and the plug key body, so that the plug can only be plugged into the socket that is uniquely matched with it.

[0035] Furthermore, the key position grooves on the outer surface of the plug key body are asymmetrically and non-uniformly distributed. At least two key position grooves are provided, and the number and distribution positions of the convex keys are adapted to the key position grooves. In this embodiment, four key position grooves are provided and are arranged on the outer surface of the plug key body in an asymmetric and non-uniform manner. When the A plug cannot be inserted into the B socket, if the operator does not snap the plug buckle into the socket buckle and rotates the A plug by a certain angle and then inserts it into the B socket, there is a possibility that the A plug can be successfully inserted into the B socket when the key position grooves are symmetrically and uniformly distributed (even if the A plug and the B socket should not be matched), and there is a risk of plugging the wrong socket. Therefore, in this embodiment, the key position grooves are asymmetrically and non-uniformly distributed. Even if the operator does not snap the plug buckle into the socket buckle and rotates the A plug by a certain angle, it still cannot be inserted into the B socket, ensuring that the plug can only be inserted when all the convex keys on the socket completely correspond to the key position grooves on the plug, further improving the reliability of the anti-fooling structure and fundamentally eliminating the possibility of plugging the wrong socket.

[0036] The present invention provides a general anti-fooling structure for high-voltage connectors. By providing key position grooves on the socket and convex keys on the plug, when the plug is inserted into the socket, the convex keys are inserted into the key position grooves to achieve plug-in cooperation. In the case where a set of plug and socket only occupies one assembly orientation, one plug can only be inserted into the only socket that matches it, solving the technical problem that the high-voltage connector plug is prone to be plugged into the wrong socket in the prior art when there are a large number of high-voltage connectors.

[0037] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A general anti-fooling structure for a high-voltage connector, comprising a socket and a plug adapted to the socket, characterized in that, The socket includes a socket body and a socket key body disposed within the socket body. The plug includes a plug body and a plug key body sleeved outside the plug body. The plug key body is adapted to the assembly orientation of the socket key body, and when the plug is inserted into the socket, the plug key body is in plug-in fit with the socket key body. A keyway groove is provided on the outer surface of the socket key body. The keyway groove extends along the axial direction of the socket key body starting from the top end of the socket key body. The plug key body includes a convex key provided on the outer surface of the plug key body. The convex key extends along the axial direction of the plug key body. When the plug is inserted into the socket, the convex key is inserted into the keyway groove on the socket key body to achieve plug-in fit; or A convex key is provided on the outer surface of the socket key body. The convex key extends along the axial direction of the socket key body. The plug key body includes a keyway groove provided on the outer surface of the plug key body. The keyway groove extends along the axial direction of the plug key body. When the plug is inserted into the socket, the convex key on the socket key body is inserted into the keyway groove on the plug key body to achieve plug-in fit; The keyway grooves on the outer surface of the socket key body are asymmetrically and non-uniformly distributed, and at least two keyway grooves are provided. The number and distribution positions of the convex keys are adapted to the keyway grooves; or, the keyway grooves on the outer surface of the plug key body are asymmetrically and non-uniformly distributed, and at least two keyway grooves are provided. The number and distribution positions of the convex keys are adapted to the keyway grooves; The bottom of the socket body includes a positioning groove portion, and the bottom of the socket key body also includes a positioning groove portion. The positioning groove portions are distributed circumferentially along the bottoms of the socket body and the socket key body. The protrusion of the positioning groove portion at the bottom of the socket body abuts against the recess of the positioning groove portion at the bottom of the socket key body to position the socket key body relative to the socket body. The bottom of the plug body includes a positioning groove portion, and the bottom of the plug key body also includes a positioning groove portion. The positioning groove portions are distributed circumferentially along the bottoms of the plug body and the plug key body. The protrusion of the positioning groove portion at the bottom of the plug body abuts against the recess of the positioning groove portion at the bottom of the plug key body to position the plug key body relative to the plug body.

2. The universal anti-fooling structure of the high-voltage connector according to claim 1, wherein, Four keyway grooves are provided and are asymmetrically and non-uniformly distributed on the outer surface of the socket key body; or, four keyway grooves are provided and are asymmetrically and non-uniformly distributed on the outer surface of the plug key body.

3. The general anti-fooling structure of the high-voltage connector according to claim 1, characterized in that, The socket includes a mounting plate with mounting holes provided thereon. The socket body is provided with socket retaining positions, and the plug body is provided with plug snap catches. After the plug is inserted into the socket, the plug snap catches are snapped into the socket retaining positions.

4. The general anti-fooling structure of the high-voltage connector according to claim 1, characterized in that The socket body and the socket key body disposed within the socket body are in interference fit to fix the socket key body within the socket body.

5. The universal anti-fooling structure of the high-voltage connector according to claim 1, characterized in that, The socket key body is bonded within the socket body.

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