New energy vehicle current-carrying needle replacement type charging seat

Abstract

The application discloses a new energy automobile current-carrying needle piece replacement type charging seat, which comprises a panel seat, a rear gland and a current-carrying needle sleeve arranged in the panel seat, and one end of the current-carrying needle sleeve is provided with a positioning boss which is detachably connected to the end of the current-carrying needle sleeve. The traditional integrally-formed boss is improved into the detachable positioning boss in the application, when the wave spring needs to be replaced, the positioning boss only needs to be detached from the current-carrying needle sleeve to expose the position of the wave spring, and the panel seat does not need to be disassembled, so that the maintenance operation process is greatly simplified. Further, the positioning boss is quickly disassembled through the insertion and cooperation of the positioning sheet and the positioning groove, the rotary locking of the positioning hook and the anti-dropping block and the double locking of the locking piece.

Description

Technical Field

[0001] This invention relates to the field of charging socket technology, and more specifically to a replaceable charging socket for new energy vehicles with current-carrying pins. Background Technology

[0002] Currently, the current-carrying pin sleeve in new energy vehicle charging sockets typically has an integrally formed boss structure at its end. This boss protects the end of the current-carrying pin and prevents the spring from being accidentally pulled out. Since the panel base, seat body, and current-carrying pin sleeve are mostly integrated fixed structures, when the spring needs replacement due to elastic decay from long-term use, the entire panel base must be disassembled, and the cable even cut, to access the spring. This maintenance operation is cumbersome and inefficient. Existing technology CN106025644A discloses a replaceable pin assembly for a DC charging interface with a replaceable sleeve. Replacement of the sleeve is achieved by removing and re-locking the locking mechanism. Although solutions have emerged that make the pin contact end, sleeve, or spring itself removable and replaceable, these solutions all focus on making the worn parts replaceable. Replacing the spring still requires disassembling the panel base and other external structures, resulting in cumbersome and inefficient maintenance. Summary of the Invention

[0003] This invention proposes a replaceable charging socket for new energy vehicles with a current-carrying pin, which solves the problem of how to conveniently replace the wave spring inside the current-carrying pin sleeve without disassembling the panel base.

[0004] The technical solution of this invention is implemented as follows:

[0005] A replaceable charging socket for new energy vehicles includes a panel base, a rear pressure cover mounted on one side of the panel base, and a current-carrying needle sleeve disposed in the panel base. One end of the current-carrying needle sleeve is provided with a positioning boss, which is detachably connected to the end of the current-carrying needle sleeve.

[0006] Furthermore, a positioning piece is provided on the side of the positioning boss facing the rear pressure cover, and a positioning groove is provided on one end of the current-carrying needle sleeve facing the positioning boss. The positioning piece is inserted into the positioning groove so that the positioning boss and the current-carrying needle sleeve are axially engaged.

[0007] Furthermore, the positioning plate is provided with a positioning hook, and the current-carrying needle sleeve is provided with a positioning opening, the positioning opening corresponding to the positioning hook. The current-carrying needle sleeve is also provided with an anti-detachment block that cooperates with the positioning hook, and the anti-detachment block is located on one side of the positioning opening. When the positioning boss rotates relative to the current-carrying needle sleeve, the positioning hook is inserted through the positioning opening and hooked to the anti-detachment block.

[0008] Furthermore, the anti-detachment block protrudes from the outer peripheral wall of the current-carrying needle sleeve and is located on the side of the positioning port along the circumferential direction.

[0009] Furthermore, the positioning piece is an annular piece, or the positioning piece is composed of multiple arc-shaped pieces spaced apart along the circumference.

[0010] Furthermore, it also includes a locking member, which is movably disposed between the positioning boss and the current-carrying needle sleeve. The locking member has a locked position and an unlocked position. In the locked position, the locking member restricts the rotation of the positioning boss relative to the current-carrying needle sleeve. In the unlocked position, the locking member releases the rotation constraint on the positioning boss.

[0011] Furthermore, the locking member includes a spring plate and a locking pin. The spring plate is connected to the locking pin, and the spring plate is slidably disposed on the current-carrying needle sleeve. The locking pin corresponds to the locking hole on the positioning boss, and the locking member is in the locking position when the locking pin is inserted into the locking hole.

[0012] Furthermore, the spring sheet is a U-shaped spring sheet, the locking pin is connected to the bottom of the U-shaped spring sheet, and the two arms of the U-shaped spring sheet are respectively slidably engaged with the two side walls of the guide groove on the current-carrying needle sleeve.

[0013] Furthermore, the current-carrying needle sleeve is also provided with a locking and limiting groove that communicates with the guide groove. The locking and limiting groove is located at one end of the guide groove near the positioning boss, and the width of the locking and limiting groove is greater than the width of the guide groove. The U-shaped spring sheet elastically unfolds in the locking and limiting groove and is stuck in the locking and limiting groove.

[0014] Furthermore, the U-shaped spring sheet is elastically contracted by the pressure of the two side walls of the guide groove in the guide groove. When the U-shaped spring sheet slides into the locking limiting groove, it elastically unfolds due to the loss of pressure from the two side walls of the guide groove. The locking pin is inserted into the locking hole as the U-shaped spring sheet slides into the locking limiting groove.

[0015] The beneficial effects of the technical solution provided in this application are as follows:

[0016] 1. In this application, the boss that is traditionally integrally formed on the end of the current-carrying needle sleeve is improved into a positioning boss that is detachably connected to the end of the current-carrying needle sleeve. When it is necessary to replace the wave spring inside the current-carrying needle, the positioning boss only needs to be removed from the end of the current-carrying needle sleeve to directly expose the installation position of the wave spring. There is no need to disassemble the panel seat, the rear pressure cover and other peripheral structures, and there is no need to cut the cable.

[0017] 2. In this application, the positioning plate and the positioning groove are inserted and matched to achieve rapid axial alignment and engagement between the positioning boss and the current-carrying needle sleeve. During assembly, the positioning plate only needs to be inserted into the positioning groove along the axis to complete the initial positioning. The positioning hook is embedded in the positioning port and hooked to the anti-detachment block, so that the positioning boss is circumferentially locked after rotation, which effectively prevents the positioning boss from accidentally coming off along the axis under conditions such as vehicle vibration. The locking part restricts the rotation of the positioning boss relative to the current-carrying needle sleeve in the locking position, preventing the positioning boss from rotating in the opposite direction and loosening due to vibration. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the charging base of the present invention;

[0020] Figure 2 This is an exploded view of the charging base of the present invention;

[0021] Figure 3 This is a partial anatomical view of the current-carrying needle sleeve and positioning boss of the present invention.

[0022] In the diagram: 1. Panel base, 2. Rear pressure cover, 3. Dust cover, 11. Current-carrying needle sleeve, 12. Positioning boss, 13. Locking component, 14. Base body, 21. Current-carrying needle, 22. Wave spring, 111. Positioning groove, 112. Positioning port, 113. Anti-detachment block, 114. Guide groove, 115. Locking limit groove, 121. Positioning piece, 122. Positioning hook, 123. Locking hole, 131. U-shaped spring piece, 132. Locking pin. Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1 and Figure 2As shown, the replacement charging socket for current-carrying pins of new energy vehicles provided in this application mainly includes a panel base 1, a dust cover 3, a rear pressure cover 2, and multiple current-carrying pin sleeves 11 disposed within the panel base 1. The panel base 1 has a cylindrical body 14, one side of which is an open end hinged to the dust cover 3, and the other side of which is a closed end fitted with the rear pressure cover 2. Multiple current-carrying pin sleeves 11 are fixedly installed inside the body 14. Multiple current-carrying pins 21 are correspondingly provided on the rear pressure cover 2. When the rear pressure cover 2 is fitted to the closed end of the body 14, each current-carrying pin 21 is inserted into its corresponding current-carrying pin sleeve 11, and the current-carrying pin sleeve 11 provides positioning and support for the current-carrying pin 21.

[0025] like Figure 3 As shown, a wave spring 22 is provided inside the current-carrying pin 21. The wave spring 22 surrounds the inner peripheral wall of the current-carrying pin 21. It is mainly used to provide connection pressure through the elastic deformation of the wave spring 22 itself when the pin of the charging head is inserted into the current-carrying pin 21, so as to ensure the reliability of electrical contact between the pin and the current-carrying pin 21, and at the same time prevent the pin of the charging head from easily falling out of the current-carrying pin 21.

[0026] Based on the above structure, a positioning boss 12 is provided on the side of the current-carrying needle sleeve 11 facing the dust cover 3. It should be noted that in the prior art, the positioning boss and the current-carrying needle sleeve are integrally formed, while in this application, the positioning boss 12 and the current-carrying needle sleeve 11 are detachably connected. The positioning boss 12 is generally cylindrical or annular in shape, and its end face facing the dust cover 3 is used to protect the end of the current-carrying needle 21. Furthermore, the inner edge of the positioning boss 12 is tapered inward to prevent the wave spring 22 from being accidentally pulled out when the charging head pins are removed.

[0027] As one of the core improvements of this application, a positioning piece 121 is provided on the side of the positioning boss 12 facing the rear pressure cover 2. Figure 3 In the specific embodiment shown, the positioning piece 121 is composed of multiple arc-shaped pieces evenly spaced circumferentially. In other embodiments not shown, the positioning piece 121 may also be an annular structure, continuously surrounding the end face of the positioning boss 12. Correspondingly, a positioning groove 111 is provided on the end face of the current-carrying needle sleeve 11 facing the dust cover 3, and the shape and position of the positioning groove 111 are adapted to the positioning piece 121. When the positioning boss 12 needs to be installed on the current-carrying needle sleeve 11, the positioning piece 121 is aligned axially with the positioning groove 111 and inserted, thereby achieving axial engagement and initial positioning of the positioning boss 12 and the current-carrying needle sleeve 11.

[0028] A positioning hook 122 is further provided on the positioning piece 121. Specifically, the positioning hook 122 extends radially outward from the surface of the positioning piece 121, or extends axially toward the rear pressure cover 2. A positioning opening 112 is provided on the current-carrying needle sleeve 11 corresponding to the position of the positioning hook 122, and the positioning opening 112 penetrates the wall thickness of the current-carrying needle sleeve 11. When the positioning piece 121 is inserted into the positioning groove 111, the positioning hook 122 needs to correspond to the position of the positioning opening 112, so that the positioning hook 122 can pass through the positioning opening 112 through the wall thickness of the current-carrying needle sleeve 11 and extend into the interior of the current-carrying needle sleeve 11.

[0029] The current-carrying needle sleeve 11 is also provided with an anti-detachment block 113. The anti-detachment block 113 is located on the side of the positioning port 112 along the circumferential direction of the current-carrying needle sleeve 11, and protrudes from the outer or inner circumferential wall of the current-carrying needle sleeve 11. The anti-detachment block 113 is adapted to the positioning hook 122, and its specific structure can be a protruding stop or a locking structure. When the positioning piece 121 is inserted into the positioning groove 111 and the positioning hook 122 passes through the positioning port 112, the operator rotates the positioning boss 12. The positioning boss 12 drives the positioning piece 121 and the positioning hook 122 to rotate together, so that the positioning hook 122 moves from the position of the positioning port 112 along the circumferential direction to the position of the anti-detachment block 113 and hooks onto the anti-detachment block 113. At this time, the positioning boss 12 is circumferentially locked and cannot be pulled out axially.

[0030] like Figure 3 As shown, this application also includes a locking member 13, which is movably disposed between the positioning boss 12 and the current-carrying needle sleeve 11, for constraining the rotation of the positioning boss 12 relative to the current-carrying needle sleeve 11. Specifically, a locking hole 123 is provided on the positioning boss 12, which extends axially through the positioning boss 12 and to the surface of the positioning piece 121, so as to avoid the presence of the positioning piece 121 from obstructing the locking action of the locking member 13.

[0031] The current-carrying needle sleeve 11 has a guide groove 114 and a locking and limiting groove 115 communicating with the guide groove 114. The guide groove 114 extends axially along the current-carrying needle sleeve 11, and the locking and limiting groove 115 is located at the end of the guide groove 114 near the dust cover 3, and the width of the locking and limiting groove 115 is greater than the width of the guide groove 114. The guide groove 114 and the locking and limiting groove 115 together form a channel for the locking member 13 to slide.

[0032] The locking component 13 includes a U-shaped spring plate 131 and a locking pin 132. The U-shaped spring plate 131 is inverted, with its two arms slidingly engaging with the side walls of the guide groove 114, and the locking pin 132 connected to one side of the U-shaped spring plate 131. The position of the locking pin 132 corresponds to the locking hole 123 on the positioning boss 12. In its natural state, the width between the two arms of the U-shaped spring plate 131 is greater than the width of the guide groove 114 but less than or equal to the width of the locking limiting groove 115. When the U-shaped spring plate 131 is pressed into the guide groove 114, the two arms are elastically contracted inward by the pressure of the side walls of the guide groove 114; when the U-shaped spring plate 131 slides along the guide groove 114 to the position of the locking limiting groove 115, the two arms expand outward under the action of elastic restoring force due to the loss of pressure, and are stuck in the locking limiting groove 115.

[0033] During product assembly at the factory, the locking element 13 is first pre-installed on the current-carrying needle sleeve 11. Specifically, the U-shaped spring plate 131 is aligned with the opening of the locking limiting groove 115, allowing the two arms of the U-shaped spring plate 131 to initially engage in the locking limiting groove 115 for pre-positioning. At this point, the locking element 13 is in the pre-installed position. Subsequently, the operator presses down firmly on the locking pin 132, pushing the U-shaped spring plate 131 from the locking limiting groove 115 into the guide groove 114. Because the width of the guide groove 114 is smaller than the width of the locking limiting groove 115, the two arms of the U-shaped spring plate 131 are squeezed inward by the side walls and retracted when entering the guide groove 114. The U-shaped spring plate 131 continues to slide downward in the guide groove 114, and the locking pin 132 moves downward accordingly.

[0034] Next, install the positioning boss 12 onto the current-carrying needle sleeve 11. Align the positioning piece 121 on the positioning boss 12 with the positioning groove 111 on the current-carrying needle sleeve 11, while ensuring that the positioning hook 122 corresponds to the position of the positioning opening 112. Then, fully insert the positioning piece 121 into the positioning groove 111 axially. At this time, the positioning hook 122 passes through the positioning opening 112 and extends into the interior of the current-carrying needle sleeve 11. After insertion, rotate the positioning boss 12. The positioning boss 12 drives the positioning hook 122 to rotate circumferentially and move to the position of the anti-detachment block 113. The positioning hook 122 hooks onto the anti-detachment block 113, realizing the circumferential locking of the positioning boss 12.

[0035] Finally, the operator pulls the locking element 13 upwards. In actual operation, due to the compact structure of the charging socket and its installation inside the vehicle, the operating space is limited. The operator can use a wire with a hook-shaped end or a special tool to hook the bottom of the U-shaped spring plate 131 or the locking pin 132 and pull the locking element 13 towards the dust cover 3. The U-shaped spring plate 131 slides upwards along the guide groove 114. When the U-shaped spring plate 131 slides to the position of the locking limit groove 115, the two arms, due to the loss of the compression of the side walls of the guide groove 114, unfold outwards under the action of elastic restoring force and are stuck in the locking limit groove 115. At the same time, the locking pin 132 connected to the U-shaped spring plate 131 moves upwards and inserts into the locking hole 123 on the positioning boss 12, completing the final locking. At this time, the locking member 13 prevents itself from moving axially by cooperating with the U-shaped spring plate 131 and the locking limit groove 115, and prevents the positioning boss 12 from rotating in the opposite direction by inserting the locking pin 132 into the locking hole 123, thus forming a double lock.

[0036] When the wave spring 22 needs to be replaced, the operator uses the shaft to apply a pushing force to the locking member 13, causing the U-shaped spring plate 131 to disengage from the locking limit groove 115 and re-enter the guide groove 114. The locking pin 132 then exits from the locking hole 123, releasing the locking member 13 from its rotational constraint on the positioning boss 12. Then, the positioning boss 12 is rotated in the opposite direction, causing the positioning hook 122 to rotate from the anti-detachment block 113 to the position of the positioning port 112. The positioning boss 12 is then pulled out entirely from the current-carrying needle sleeve 11, exposing the position of the wave spring 22 for replacement. After replacement, the positioning boss 12 and the locking member 13 are reinstalled according to the above assembly steps.

[0037] Since the positioning boss 12, positioning piece 121 and locking member 13 can all be integrally injection molded from insulating material, the manufacturing process is simple and the cost is low. All the above operations can be completed directly in front of the panel base 1 (i.e., on the side where the dust cover 3 is located), without the need to disassemble the panel base 1, the rear pressure cover 2 or cut the cable, which simplifies the maintenance operation.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A replaceable charging socket for current-carrying pins of new energy vehicles, characterized in that, It includes a panel base (1), a rear pressure cover (2) assembled on one side of the panel base (1), and a current-carrying needle sleeve (11) disposed in the panel base (1). One end of the current-carrying needle sleeve (11) is provided with a positioning boss (12), and the positioning boss (12) is detachably connected to the end of the current-carrying needle sleeve (11).

2. The new energy vehicle current-carrying pin replacement charging socket according to claim 1, characterized in that, The positioning boss (12) has a positioning piece (121) on the side facing the rear pressure cover (2), and the current-carrying needle sleeve (11) has a positioning groove (111) at one end facing the positioning boss (12). The positioning piece (121) is inserted into the positioning groove (111) so that the positioning boss (12) and the current-carrying needle sleeve (11) are axially engaged.

3. The new energy vehicle current-carrying pin replacement charging socket according to claim 2, characterized in that, The positioning plate (121) is provided with a positioning hook (122), and the current-carrying needle sleeve (11) is provided with a positioning port (112). The positioning port (112) corresponds to the positioning hook (122). The current-carrying needle sleeve (11) is also provided with an anti-detachment block (113) that cooperates with the positioning hook (122). The anti-detachment block (113) is located on one side of the positioning port (112). When the positioning boss (12) rotates relative to the current-carrying needle sleeve (11), the positioning hook (122) is inserted into and hooked onto the anti-detachment block (113) through the positioning port (112).

4. The new energy vehicle current-carrying pin replacement charging socket according to claim 3, characterized in that, The anti-detachment block (113) protrudes from the outer peripheral wall of the current-carrying needle sleeve (11) and is located on the side of the positioning port (112) in the circumferential direction.

5. The new energy vehicle current-carrying pin replacement charging socket according to claim 2, characterized in that, The positioning piece (121) is an annular piece, or the positioning piece (121) is composed of multiple arc-shaped pieces spaced apart along the circumference.

6. The new energy vehicle current-carrying pin replacement charging socket according to claim 3, characterized in that, It also includes a locking member (13), which is movably disposed between the positioning boss (12) and the current-carrying needle sleeve (11). The locking member (13) has a locking position and an unlocking position. In the locking position, the locking member (13) restricts the rotation of the positioning boss (12) relative to the current-carrying needle sleeve (11). In the unlocking position, the locking member (13) releases the rotation constraint on the positioning boss (12).

7. The new energy vehicle current-carrying pin replacement charging socket according to claim 6, characterized in that, The locking member (13) includes a spring plate (131) and a locking pin (132). The spring plate (131) is connected to the locking pin (132). The spring plate (131) is slidably disposed on the current-carrying needle sleeve (11). The locking pin (132) corresponds to the locking hole (123) on the positioning boss (12). When the locking member (13) is in the locking position, the locking pin (132) is inserted into the locking hole (123).

8. The new energy vehicle current-carrying pin replacement charging socket according to claim 7, characterized in that, The spring sheet (131) is a U-shaped spring sheet, and the locking pin (132) is connected to the bottom of the U-shaped spring sheet. The two arms of the U-shaped spring sheet are respectively slidably engaged with the two side walls of the guide groove (114) on the current-carrying needle sleeve (11).

9. The new energy vehicle current-carrying pin replacement charging socket according to claim 8, characterized in that, The current-carrying needle sleeve (11) is also provided with a locking and limiting groove (115) that communicates with the guide groove (114). The locking and limiting groove (115) is located at one end of the guide groove (114) near the positioning boss (12), and the width of the locking and limiting groove (115) is greater than the width of the guide groove (114). The U-shaped spring sheet elastically unfolds in the locking and limiting groove (115) and is stuck in the locking and limiting groove (115).

10. The new energy vehicle current-carrying pin replacement charging socket according to claim 9, characterized in that, The U-shaped spring sheet is elastically contracted in the guide groove (114) by being squeezed by the two side walls of the guide groove (114). When the U-shaped spring sheet slides into the locking limiting groove (115), it elastically unfolds because it loses the squeezing of the two side walls of the guide groove (114). The locking pin (132) is inserted into the locking hole (123) as the U-shaped spring sheet slides into the locking limiting groove (115).

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