Plug assembly and power connector using the plug assembly

Abstract

The present invention relates to a plug assembly and a power connector using the plug assembly. The plug assembly includes a plug mounting seat and a plug. The plug mounting seat is provided with a rear positioning surface of the plug. The plug is provided with a floating hole or a floating groove. The plug mounting seat includes a seat body and a positioning column arranged on the seat body and passing through the floating hole or the floating groove. The plug assembly also includes a limiting member arranged at the front end of the positioning column. The limiting member has a front positioning surface of the plug facing the plug. The front positioning surface of the plug is arranged parallel and spaced apart from the rear positioning surface of the plug, and the front positioning surface of the plug is matched with the gap of the plug so that the plug floats only in a direction perpendicular to the front and back. By arranging a positioning column on the seat body and arranging a limiting member on the positioning column to limit the plug on the seat body in the front and back direction, when relative displacement or relative displacement tendency occurs between the plug and the socket, the plug can float in a direction perpendicular to the front and back direction, thereby avoiding damage to the plug or the socket and improving the service life.

Description

Technical Field

[0001] The invention relates to a plug assembly and a power connector using the plug assembly. Background Art

[0002] In existing power connectors, it is difficult to ensure the positioning accuracy between the plug and the socket, so the tolerance range is small. If the corresponding plug and socket are not properly inserted, the plugging parts of the power connector will be tilted, thereby reducing the reliability of the power connector and shortening the service life of the power connector. In addition, in charging stations or electric vehicles, the connection between the plug and the socket may produce relative displacement due to vibration or other uncertain factors. Since the plug and socket of the existing power connector are respectively fixed on different structures, the relative displacement or relative displacement trend between the two is very likely to cause the plug and socket to become loose, or even cause destructive damage to the plug and the socket. Summary of the invention

[0003] The object of the present invention is to provide a plug assembly to solve the problem in the prior art that the relative displacement or relative displacement tendency between the plug and the socket may cause the plug-in connection between the plug and the socket to become loose, or even cause destructive damage to the plug and the socket. The object of the present invention is also to provide a power connector using the plug assembly to solve the problem that the plug-in connection between the plug and the socket may become loose, thereby affecting the life of the power connector.

[0004] To achieve the above object, the technical solution of the plug assembly of the present invention is:

[0005] The plug assembly includes a plug mounting seat and a plug floatingly assembled on the plug mounting seat, the front end of the plug is defined as the plug-in end, the plug mounting seat is provided with a rear positioning surface of the plug perpendicular to the front-to-back direction and facing the plug and positioningly matched with the plug, the plug is provided with a floating hole or a floating groove, the plug mounting seat includes a seat body and a positioning column fixed on the seat body and passing through the floating hole or the floating groove, a floating gap is provided between the positioning column and the floating hole or the floating groove for the plug to float on the plug mounting seat in a direction perpendicular to the front-to-back direction, the plug assembly also includes a limiting member arranged at the front end of the positioning column, the limiting member has a front positioning surface of the plug facing the seat body and positioningly matched with the plug, the front positioning surface of the plug is arranged in parallel with the rear positioning surface of the plug and the front positioning surface of the plug is matched with the gap of the plug so that the plug only floats in the direction perpendicular to the front-to-back direction.

[0006] The beneficial effect is: by arranging a positioning column on the seat body, arranging a floating hole or a floating groove on the plug for the positioning column to pass through, and arranging a limiting member on the positioning column to limit the plug on the seat body along the front-to-back direction, when relative displacement or relative displacement tendency occurs between the plug and the socket, the plug can float in a direction perpendicular to the front-to-back direction, thereby avoiding damage to the plug or the socket and improving the service life.

[0007] The front end of the positioning column is provided with a stopper positioning surface which is parallel to the front positioning surface of the plug and is positioned with the stopper. The stopper is positioned by the stopper limiting surface, which can better ensure the clearance fit between the front positioning surface of the plug and the plug.

[0008] The positioning column is a nut column, and the limiting member includes a limiting gasket and a fastening screw that fastens the limiting gasket to the nut column. The rear side of the limiting gasket constitutes the front positioning surface of the plug, and the positioning surface of the limiting member is positioned and matched with the rear side of the limiting gasket. The thread is arranged on the inner side to prevent the thread from being damaged during the floating process, and the limiting gasket and the fastening screw are standard parts, with low cost, and easy to replace after being damaged.

[0009] The seat body is also provided with a support column for supporting the positioning column, the cross-sectional area of ​​the support column is larger than the cross-sectional area of ​​the positioning column, and the front side of the support column constitutes the rear positioning surface of the plug. The front side of the support column is positioned with the plug to avoid the problem of high friction when the plug floats due to direct contact between the plug and the seat body.

[0010] At least two reinforcing plates supported on the seat body to strengthen the support column are arranged at intervals on the outer circumference of the support column to ensure the stability of the positioning column on the support column.

[0011] To achieve the above object, the technical solution of the power connector of the present invention is:

[0012] The power connector includes a socket and a plug assembly, the plug assembly includes a plug mounting seat and a plug floatingly assembled on the plug mounting seat, the front end of the plug is defined as the plug-in end, the plug mounting seat is provided with a rear positioning surface of the plug perpendicular to the front-to-back direction and facing the plug for positioning and matching with the plug, the plug is provided with a floating hole or a floating groove, the plug mounting seat includes a seat body and a positioning column fixed on the seat body and passing through the floating hole or the floating groove, a floating gap is provided between the positioning column and the floating hole or the floating groove for the plug to float on the plug mounting seat in a direction perpendicular to the front-to-back direction, the plug assembly also includes a limiting member arranged at the front end of the positioning column, the limiting member has a front positioning surface of the plug facing the seat body and positioning and matching with the plug, the front positioning surface of the plug is arranged in parallel with the rear positioning surface of the plug and the front positioning surface of the plug is matched with the gap of the plug so that the plug only floats in the direction perpendicular to the front-to-back direction.

[0013] The beneficial effect is: by arranging a positioning column on the seat body, arranging a floating hole or a floating groove on the plug for the positioning column to pass through, and arranging a limiting member on the positioning column to limit the plug on the seat body along the front-to-back direction, when relative displacement or relative displacement tendency occurs between the plug and the socket, the plug can float in a direction perpendicular to the front-to-back direction, thereby avoiding damage to the plug or the socket and improving the service life.

[0014] The front end of the positioning column is provided with a stopper positioning surface which is parallel to the front positioning surface of the plug and is positioned with the stopper. The stopper is positioned by the stopper limiting surface, which can better ensure the clearance fit between the front positioning surface of the plug and the plug.

[0015] The positioning column is a nut column, and the limiting member includes a limiting gasket and a fastening screw that fastens the limiting gasket to the nut column. The rear side of the limiting gasket constitutes the front positioning surface of the plug, and the positioning surface of the limiting member is positioned and matched with the rear side of the limiting gasket. The thread is arranged on the inner side to prevent the thread from being damaged during the floating process, and the limiting gasket and the fastening screw are standard parts, with low cost, and easy to replace after being damaged.

[0016] The seat body is also provided with a support column for supporting the positioning column, the cross-sectional area of ​​the support column is larger than the cross-sectional area of ​​the positioning column, and the front side of the support column constitutes the rear positioning surface of the plug. The front side of the support column is positioned with the plug to avoid the problem of high friction when the plug floats due to direct contact between the plug and the seat body.

[0017] At least two reinforcing plates supported on the seat body to strengthen the support column are arranged at intervals on the outer circumference of the support column to ensure the stability of the positioning column on the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a plug assembly of a power connector of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the plug assembly of the power connector of the present invention from another perspective;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the plug mounting seat;

[0021] Figure 4 for Figure 2 The structural diagram of the plug;

[0022] Figure 5 It is a schematic diagram of the structure of the plug and socket of the power connector of the present invention.

[0023] In the figure: 1-base; 2-fastening screw; 3-reinforcement plate; 4-support column; 41-rear positioning surface of plug; 5-positioning column; 51-positioning surface of limiter; 52-threaded hole; 6-positioning gasket; 61-front positioning surface of plug; 7-plug; 71-guide groove; 8-floating groove; 9-socket; 91-guide column. DETAILED DESCRIPTION

[0024] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] A specific embodiment of the power connector of the present invention is as follows Figures 1 to 5 As shown, the power connector includes a socket 9 and a plug assembly, the plug assembly includes a plug mounting seat and a plug 7 floatingly assembled on the plug mounting seat, the front end of the plug 7 is defined as the plug end, and the plug 7 is provided with a floating groove 8. Of course, in other embodiments, the plug is provided with a floating hole. Figure 2 and Figure 3 As shown, the plug mounting seat includes a seat body 1 and a positioning column 5 arranged on the seat body 1 and passing through the floating groove 8. The positioning column 5 in this embodiment is a nut column with a threaded hole 52. The plug assembly also includes a limiting member arranged at the front end of the positioning column 5. The limiting member includes a limiting gasket 6 and a fastening screw 2 for fastening the limiting gasket 6 to the positioning column 5. The rear side surface of the limiting gasket 6 constitutes the front positioning surface 61 of the plug. The thread is arranged on the inner side to prevent the thread from being damaged during the floating process. The limiting gasket and the fastening screw are standard parts with low cost and easy to replace after being damaged. In other embodiments, the head of the fastening screw can be made larger and used as a limiting gasket; or the positioning column is a threaded column with an external thread, and a limiting member with a limiting gasket is threadedly connected to the threaded column.

[0026] In this embodiment, a floating gap is provided between the positioning column 5 and the floating groove 8 for the plug 7 to float on the plug mounting seat in a direction perpendicular to the front and rear directions. The limiting gasket 6 has a plug front positioning surface 61 facing the seat body 1 and positioned and matched with the plug 7. The plug front positioning surface 61 is arranged parallel to the plug rear positioning surface 41 and spaced apart. The plug front positioning surface 61 and the plug 7 are gap-matched so that the plug 7 can float only in the direction perpendicular to the front and rear directions. Figure 3 As shown, the front end of the positioning column 5 is provided with a limit member positioning surface 51 which is parallel to the front positioning surface 61 of the plug and is positioned and matched with the rear side surface of the limit gasket 6. The limit gasket 6 is positioned by the limit member positioning surface 51, which can better ensure the clearance fit between the front positioning surface 61 of the plug and the plug 7.

[0027] like Figure 3 As shown, the seat body 1 is also provided with a support column 4 for supporting the positioning column 5. The cross-sectional area of ​​the support column 4 is larger than the cross-sectional area of ​​the positioning column 5. The front side surface of the support column 4 constitutes the plug rear positioning surface 41. The front side surface of the support column 4 is positioned with the plug 7 to avoid the problem of high friction when the plug 7 floats due to direct contact between the plug 7 and the seat body 1. In other embodiments, the plug is directly fixed to the seat body through the positioning column, and the plug contacts the seat body, and the upper surface of the plug serves as the plug rear positioning surface. In this embodiment, at least two reinforcing plates 3 supported on the seat body 1 to strengthen the support column 4 are spaced apart on the outer circumferential surface of the support column 4 to ensure the stability of the positioning column 5 on the support column 4. As shown Figure 4As shown, the floating grooves 8 are semicircular grooves and there are four of them. The line connecting the center lines of the two corresponding positioning columns 5 on the seat body 1 along the width direction is smaller than the width of the plug 7 to ensure that the plug 7 will not fall out. Figure 5 As shown, the plug 7 is provided with a guide groove 71, and the socket 9 is provided with a guide column 91, so as to guide the plug 7 and the socket 9 when they are plugged in, so as to ensure smooth plugging. In other embodiments, the guide groove and the guide column may not be provided.

[0028] The specific embodiment of the plug assembly of the present invention has the same structure as the plug assembly described in the specific embodiment of the power connector, and will not be described in detail.

Claims

1. A plug assembly, characterized in that: The invention comprises a plug mounting seat and a plug floatingly assembled on the plug mounting seat, wherein the front end of the plug is defined as a plug-in end, the plug mounting seat is provided with a rear positioning surface of the plug which is perpendicular to the front-to-back direction and faces the plug and is positioned to cooperate with the plug, the plug is provided with a floating hole or a floating groove, the plug mounting seat comprises a seat body and a positioning column fixed on the seat body and passing through the floating hole or the floating groove, a floating gap is provided between the positioning column and the floating hole or the floating groove for the plug to float on the plug mounting seat in a direction perpendicular to the front-to-back direction, the plug assembly also comprises a limiting member arranged at the front end of the positioning column, the limiting member having a front positioning surface of the plug which faces the seat body and is positioned to cooperate with the plug, the front positioning surface of the plug is arranged in parallel with the rear positioning surface of the plug and the front positioning surface of the plug cooperates with the gap of the plug so that the plug floats only in the direction perpendicular to the front-to-back direction, the front end of the positioning column is provided with a limiting member positioning surface which is parallel to the front positioning surface of the plug and is positioned to cooperate with the limiting member, and the limiting member comprises a limiting gasket.

2. The plug assembly according to claim 1, characterized in that: There are four positioning columns, which are nut columns. The limiting member also includes a fastening screw that fastens the limiting gasket to the nut column. The rear side surface of the limiting gasket constitutes the front positioning surface of the plug, and the positioning surface of the limiting member is positioned and matched with the rear side surface of the limiting gasket.

3. The plug assembly according to claim 1 or 2, characterized in that: The seat body is also provided with a support column for supporting the positioning column, the cross-sectional area of ​​the support column is larger than the cross-sectional area of ​​the positioning column, and the front side surface of the support column constitutes the rear positioning surface of the plug.

4. The plug assembly according to claim 3, characterized in that: At least two reinforcing plates supported on the seat body to strengthen the support column are arranged at intervals on the outer peripheral surface of the support column.

5. A power connector, comprising a socket and a plug assembly, characterized in that: The plug assembly includes a plug mounting seat and a plug floatingly assembled on the plug mounting seat, the front end of the plug is defined as the plug-in end, the plug mounting seat is provided with a rear positioning surface of the plug perpendicular to the front-to-back direction and facing the plug and positioningly matched with the plug, the plug is provided with a floating hole or a floating groove, the plug mounting seat includes a seat body and a positioning column fixed on the seat body and passing through the floating hole or the floating groove, a floating gap is provided between the positioning column and the floating hole or the floating groove for the plug to float on the plug mounting seat in a direction perpendicular to the front-to-back direction, the plug assembly also includes a limiting member arranged at the front end of the positioning column, the limiting member has a front positioning surface of the plug facing the seat body and positioningly matched with the plug, the front positioning surface of the plug is arranged parallel to the rear positioning surface of the plug and the front positioning surface of the plug is matched with the gap of the plug so that the plug floats only in the direction perpendicular to the front-to-back direction, the front end of the positioning column is provided with a limiting member positioning surface parallel to the front positioning surface of the plug and positioningly matched with the limiting member, the limiting member includes a limiting gasket.

6. The power connector according to claim 5, characterized in that: There are four positioning columns, which are nut columns. The limiting member also includes a fastening screw that fastens the limiting gasket to the nut column. The rear side surface of the limiting gasket constitutes the front positioning surface of the plug, and the positioning surface of the limiting member is positioned and matched with the rear side surface of the limiting gasket.

7. The power connector according to claim 5 or 6, characterized in that: The seat body is also provided with a support column for supporting the positioning column, the cross-sectional area of ​​the support column is larger than the cross-sectional area of ​​the positioning column, and the front side surface of the support column constitutes the rear positioning surface of the plug.

8. The power connector according to claim 5 or 6, characterized in that: One of the plugging ends of the plug and the socket is provided with a guide groove, and the other is provided with a guide column matched with the guide groove.

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