Sealing structure for charging socket and manufacturing mold thereof

Abstract

The invention particularly discloses a sealing structure for a charging socket and a manufacturing mold of the sealing structure. The sealing structure for the charging socket comprises the charging socket, the charging socket comprises a plugging end and a plugging hole used for being connected with a charging plug, the plugging end is provided with a first sealing groove, the hole wall of the plugging hole is provided with a second sealing groove, a plurality of communicating holes are formed between the first sealing groove and the second sealing groove, and the first sealing groove is provided with a first sealing ring arranged in a protruding mode. The second sealing groove is provided with a second sealing ring arranged in a protruding mode, connecting columns are arranged in the multiple communicating holes, and the first sealing ring and the second sealing ring are connected through the multiple connecting columns. The manufacturing mold comprises a sealing structure for the charging socket, a pressing plate and a bottom plate, a material injection plate and a positioning plate are arranged between the pressing plate and the bottom plate, the material injection plate is located between the pressing plate and the positioning plate, the material injection plate is provided with a material injection groove, a material injection hole is formed in the material injection groove, the positioning plate is located between the material injection plate and the bottom plate, and the positioning plate is provided with a first mold groove. The bottom plate is provided with a second mold groove.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a sealing structure for a charging socket and a manufacturing mold thereof. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and new vehicle-mounted power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. Specifically, existing new energy vehicles are usually powered by electricity. When pure electric vehicles or hybrid vehicles need to be charged during daily use, users can use charging guns and charging sockets. The charging gun is a structure installed on the charging pile, and the charging socket is a structure installed on the new energy vehicle. The charging gun and the charging socket are supporting equipment.

[0003] Particularly important is the sealing problem of the charging socket. During the plugging and unplugging and use of the charging plug, the plug-in sealing structure at the charging socket is prone to loosening or even falling off, affecting normal use and posing a safety hazard. In the prior art, the charging socket is provided with a plug-in sealing structure, which includes two "O"-shaped rubber rings, wherein the two "O"-shaped rubber rings are not constrained to each other. When the charging plug is inserted into the charging socket, the sealing ring (i.e., the rubber ring) in the inner hole of the charging socket is squeezed, and the sealing ring is squeezed and fills the connection gap to form a tight sealing contact to increase the sealing of the charging socket.

[0004] The above-mentioned sealing structure can make the charging socket have a certain sealing performance after the charging plug is inserted, but it still has defects. On the one hand, the two rubber rings need to be installed on the charging socket through manual operation, the assembly labor cost is high, and the installation efficiency is low. On the other hand, as the number of plugging and unplugging times and the plugging and unplugging frequency of the charging gun increase, the two rubber rings are easy to fall off. On the other hand, the quality of the rubber ring is unstable and its service life is short. Summary of the invention

[0005] The object of the present invention is to provide a sealing structure for a charging socket, which can improve the sealing performance of the charging socket after a charging plug is inserted into the charging socket by changing the sealing structure of the charging socket, and prevent the charging socket from loosening and falling off easily.

[0006] According to one aspect of the present invention, there is provided a sealing structure for a charging socket, comprising a charging socket; the charging socket comprises a plug-in end and a plug-in hole for connecting a charging plug; the plug-in end is provided with a first sealing groove, the hole wall of the plug-in hole is provided with a second sealing groove, and a plurality of connecting holes are provided between the first sealing groove and the second sealing groove; the first sealing groove is provided with a protruding first sealing ring, the second sealing groove is provided with a protruding second sealing ring, and connecting columns are provided in the plurality of connecting holes; wherein the first sealing ring and the second sealing ring are connected via a plurality of connecting columns.

[0007] In some embodiments, the plug-in end includes a first annular end face and a second annular end face; the first annular end face is located between the plug-in hole and the second annular end face; the first sealing groove is located between the first annular end face and the second annular end face; the first annular end face is protruded relative to the second annular end face; wherein the first sealing ring is protruded relative to the first annular end face.

[0008] In some embodiments, the first sealing ring includes a first embedded portion and a first protruding portion; the first embedded portion is located in the first sealing groove, the first protruding portion is protruding relative to the first sealing groove, and the first protruding portion is protruding relative to the first annular end face, wherein there is a distance between the first protruding portion and the second annular end face.

[0009] In some embodiments, a transition groove is provided between the first sealing groove and the connecting hole; the first sealing ring also includes a transition portion, the transition portion is located between the first embedded portion and the connecting column, and the transition portion matches the transition groove; wherein the structures of the transition groove and the transition portion are both funnel-shaped.

[0010] In some embodiments, the second sealing ring includes a second embedded portion and a second protruding portion; the second embedded portion is located in the second sealing groove, the second protruding portion is protruding relative to the second sealing groove, and the structure of the plug-in hole is hourglass-shaped; wherein the second protruding portion is protruding relative to the hole wall of the plug-in hole.

[0011] In some embodiments, the second sealing groove includes an inner ring groove and an outer ring groove; the second embedded portion includes an inner ring portion and an outer ring portion, the inner ring portion matches the inner ring groove, and the outer ring portion matches the outer ring groove; the outer ring portion is located between the inner ring portion and the connecting column, the outer ring portion is arranged around the inner ring portion, and the connecting column is connected to the outer ring portion; wherein the thickness of the outer ring portion is less than the thickness of the inner ring portion.

[0012] In some embodiments, the outer ring groove is partially embedded in the connecting hole.

[0013] In some embodiments, the first sealing ring, the second sealing ring and the connecting column are integrally formed.

[0014] According to a technical solution of one aspect of the present invention, a sealing structure for a charging socket includes a charging socket, the charging socket includes a plug-in end and a plug-in hole for connecting a charging plug, the plug-in end is provided with a first sealing groove, the hole wall of the plug-in hole is provided with a second sealing groove, a plurality of connecting holes are provided between the first sealing groove and the second sealing groove, the first sealing groove is provided with a protruding first sealing ring, the second sealing groove is provided with a protruding second sealing ring, the first sealing ring and the second sealing ring cooperate to form a secondary sealing structure, so that the charging socket has better sealing after the charging plug is inserted; connecting columns are provided in the plurality of connecting holes, wherein the first sealing ring and the second sealing ring are connected by a plurality of connecting columns, the first sealing ring and the second sealing ring are not easy to fall off the charging socket, and further, after the charging plug is inserted into the charging socket, the sealing structure can also prevent the charging plug from loosening and falling off.

[0015] Another object of the present invention is to provide a manufacturing mold, which can change the manufacturing method of the sealing structure so that the manufacturing cost of the sealing structure of the charging port is lower, the quality is stable, and the production efficiency is higher.

[0016] According to another aspect of the present invention, a manufacturing mold is also provided, comprising the above-mentioned sealing structure for a charging socket, a pressing plate and a bottom plate, wherein an injection plate and a positioning plate are provided between the pressing plate and the bottom plate; the injection plate is located between the pressing plate and the positioning plate; the injection plate is provided with an injection groove, and an injection hole is provided in the injection groove; the positioning plate is located between the injection plate and the bottom plate; the positioning plate is provided with a first mold groove, and the bottom plate is provided with a second mold groove; the first mold groove and the second mold groove cooperate to accommodate the charging socket; the pressing plate cooperates with the injection plate so that the material in the injection groove is squeezed and injected into the first mold groove through the injection hole to form a sealing structure for the charging socket.

[0017] In some embodiments, the injection plate and the positioning plate are each provided with at least two first positioning holes, the positioning plate and the base plate are each provided with two second positioning holes, and the first positioning holes cooperate with the second positioning holes to make the injection plate, the positioning plate and the base plate coaxially arranged.

[0018] According to the technical solution of another aspect of the present invention, the manufacturing mold includes a sealing structure for the charging socket, a pressing plate and a bottom plate, an injection plate and a positioning plate are provided between the pressing plate and the bottom plate, the injection plate is located between the pressing plate and the positioning plate, and the structure of the manufacturing mold is relatively simple; the injection plate is provided with an injection groove, and an injection hole is provided in the injection groove, the positioning plate is located between the injection plate and the bottom plate, the positioning plate is provided with a first mold groove, and the bottom plate is provided with a second mold groove, the first mold groove and the second mold groove cooperate to accommodate the charging socket, and limit the charging socket to the first mold groove and the second mold groove; through the cooperation between the pressing plate and the injection plate, the material in the injection groove is squeezed and injected into the first mold groove through the injection hole to form a sealing structure of the charging socket, and the squeezed material in the injection groove flows into the first mold groove through the injection hole, which makes the flow mode of the material in the manufacturing mold relatively stable; the manufacturing mold can make the product quality of the sealing structure of the charging socket relatively stable, and can also effectively reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other features, properties and advantages of the present application will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. It should be noted that the drawings are only examples and are not drawn in proportion, and should not be used to limit the scope of protection of the present application, wherein: Figure 1 A three-dimensional diagram of the charging socket and the sealing structure of the present application; Figure 2 A three-dimensional assembly diagram of the charging socket and the sealing structure of the present application; Figure 3 This is a front view of the charging socket of this application; Figure 4 A cross-sectional view along the AA direction of the main view of the charging socket of the present application; Figure 5 for Figure 4 The enlarged view of point B; Figure 6 This is a front view of the sealing structure of the present application; Figure 7 It is a cross-sectional view along the CC direction of the main view of the sealing structure of the present application; Figure 8 for Figure 7 The enlarged view of point D; Fig. 9 This is a front view of the charging socket and sealing structure of the present application; Fig.10 It is a cross-sectional view along the EE direction of the main view of the charging socket and the sealing structure of the present application; Fig.11 for Fig.10 The enlarged view of F; Fig.12A three-dimensional assembly diagram of the manufacturing mold of this application; Fig.13 A three-dimensional diagram of the pressing plate of the present application; Fig.14 A three-dimensional view of the injection plate of the present application; Fig.15 A three-dimensional diagram of the positioning plate of the present application; Fig.16 A three-dimensional diagram of the base plate of the present application; In the figure: 1. charging socket; 11. pressure plate; 12. bottom plate; 121. second mold groove; 13. injection plate; 131. injection groove; 132. injection hole; 14. positioning plate; 141. first mold groove; 15. first positioning hole; 16. second positioning hole; 17. first empty groove; 18. second empty groove; 2. plug-in end; 21. first annular end face; 22. second annular end face; 3. plug-in hole; 4. first sealing groove; 41. transition groove; 5. second sealing groove; 51. inner ring groove; 52. outer ring groove; 53. overlapping embedded part; 6. connecting hole; 7. first sealing ring; 71. first embedded part; 72. first protruding part; 73. transition part; 8. second sealing ring; 81. second embedded part; 811. inner ring part; 812. outer ring part; 82. second protruding part; 9. connecting column. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0021] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The phrase appearing in the specification does not necessarily refer to the same embodiment, nor is it limited to mutually exclusive independent or alternative embodiments. It should be understood by those skilled in the art that the embodiments of the present invention may be combined with other embodiments without structural conflicts.

[0022] In the description of this article, unless otherwise clearly specified and limited, the technical terms "installed", "connected", "connected" and the like should be understood in a broad sense, and can be movable connection, fixed connection or integrated. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0023] In the description of this document, terms indicating orientation or positional relationships, such as "up", "down", "left", "right", "height", "length", and "width", are intended to accurately describe the embodiments and simplify the description, but are not intended to limit the parts or structures involved to having a specific orientation, being installed or operated in a specific orientation.

[0024] See also Figure 1 and Figure 2 , shown are respectively a stereoscopic diagram of the charging socket and the sealing structure of the present application and a stereoscopic assembly diagram of the charging socket and the sealing structure, the sealing structure for the charging socket 1 includes the charging socket 1, the charging socket 1 includes a plug end 2 and a plug hole 3 for connecting the charging plug, specifically, the plug end 2 of the charging socket 1 refers to the connection end between the charging socket 1 and the charging plug, and the plug hole 3 of the charging socket 1 is used for inserting the pin of the charging plug; the sealing structure includes a first sealing ring 7, a second sealing ring 8 and a connecting column 9, the two ends of the connecting column 9 are respectively connected to the first sealing ring 7 and the second sealing ring 8, wherein the first sealing ring 7, the second sealing ring 8 and the connecting column 9 are integrally formed.

[0025] See also Figure 3~Figure 5 , shown are respectively the main view of the charging socket of the present application, the cross-sectional view of the main view of the charging socket along the AA direction, and the enlarged view of the cross-sectional view of the main view of the charging socket along the AA direction at point B. The plug-in end 2 of the charging socket 1 is provided with a first sealing groove 4, and the first sealing groove 4 is an annular structure. The hole wall of the plug-in hole 3 of the charging socket 1 is provided with a second sealing groove 5, and the second sealing groove 5 is also an annular structure. Specifically, the structure of the plug-in hole 3 is hourglass-shaped, and the second sealing groove 5 is arranged at the convergence position of the plug-in hole 3, which refers to the minimum position of the annular inner diameter of the plug-in hole 3; wherein, a plurality of connecting holes 6 are provided between the first sealing groove 4 and the second sealing groove 5, and the structure of the connecting hole 6 is cylindrical, and the two ends of the connecting hole 6 are respectively connected to the first sealing groove 4 and the second sealing groove 5.

[0026] Preferably, in this embodiment, the charging socket 1 is provided with eight communication holes 6 arranged in a circular ring shape.

[0027] Preferably, in this embodiment, the connection between the bottom wall and the side wall of the first sealing groove 4 has a chamfered structure.

[0028] A transition groove 41 is provided between the first sealing groove 4 and the connecting hole 6. The cross section of the transition groove 41 is circular and the structure of the transition groove 41 is funnel-shaped. Specifically, the connecting end of the transition groove 41 and the first sealing groove 4 is the upper end, and the connecting end of the transition groove 41 and the connecting hole 6 is the lower end. From the upper end to the lower end of the transition groove 41, the aperture of the transition groove 41 changes to a contracted state.

[0029] The second sealing groove 5 includes an inner ring groove 51 and an outer ring groove 52 ; the outer ring groove 52 is located between the inner ring groove 51 and the connecting hole 6 , the outer ring groove 52 is arranged around the inner ring groove 51 , the connecting hole 6 is connected to the outer ring groove 52 , and the inner ring groove 51 is connected to the connecting hole 6 through the outer ring groove 52 .

[0030] Preferably, in this embodiment, the thickness of the outer annular groove 52 is smaller than the thickness of the inner annular groove 51 .

[0031] Preferably, in this embodiment, the outer annular groove 52 is partially embedded in the connecting hole 6, and the portion of the outer annular groove 52 embedded in the connecting hole 6 is an overlapping embedded portion 53, which makes the cross-section of the upper end of the connecting hole 6 circular and the cross-section of the lower end crescent-shaped.

[0032] Preferably, in this embodiment, the connection between the bottom wall and the side wall of the inner annular groove 51 has a chamfered structure.

[0033] See also Figure 6~Figure 8 , shown are the main view of the sealing structure of the present application, the cross-sectional view of the main view of the sealing structure along the CC direction, and the enlarged view of the cross-sectional view of the main view of the sealing structure along the CC direction at D, wherein the first sealing ring 7 is an annular structure, and the first sealing ring 7 has a structure protruding toward the upper side of the annular structure; the second sealing ring 8 is an annular structure, and the second sealing ring 8 has a structure protruding toward the center of the annular structure; wherein the first sealing ring 7 and the second sealing ring 8 are connected by a plurality of connecting columns 9, the structure of the connecting column 9 is cylindrical, and the two ends of the connecting column 9 are respectively connected to the first sealing ring 7 and the second sealing ring 8 to form a sealing structure for the charging socket 1.

[0034] Preferably, in this embodiment, the first sealing ring 7 and the second sealing ring 8 are connected via eight connecting columns 9 .

[0035] The first sealing ring 7 includes a first embedded portion 71 and a first protruding portion 72, the first embedded portion 71 is located between the first protruding portion 72 and the connecting column 9, and the second sealing ring 8 includes a second embedded portion 81 and a second protruding portion 82, the second embedded portion 81 is located between the second protruding portion 82 and the connecting column 9, wherein the protruding structures of the first protruding portion 72 and the second protruding portion 82 are both arc-shaped.

[0036] Preferably, in this embodiment, the first embedded portion 71 has a chamfered structure matching the first sealing groove 4 .

[0037] Preferably, in this embodiment, the second embedding portion 81 has a chamfered structure matching the second sealing groove 5 .

[0038] The first sealing ring 7 also includes a transition portion 73, which is located between the first embedded portion 71 and the connecting column 9. The transition portion 73 matches the transition groove 41, and the structure of the transition portion 73 is also funnel-shaped. Specifically, the connecting end of the transition portion 73 and the first embedded portion 71 is the upper end, and the connecting end of the transition portion 73 and the connecting column 9 is the lower end. The transition portion 73 is in a contracted state from the upper end to the lower end.

[0039] The second embedded portion 81 includes an inner ring portion 811 and an outer ring portion 812 ; the outer ring portion 812 is located between the inner ring portion 811 and the connecting column 9 , the outer ring portion 812 is arranged around the inner ring portion 811 , the connecting column 9 is connected to the outer ring portion 812 , and the inner ring portion 811 is connected to the connecting column 9 through the outer ring portion 812 .

[0040] Preferably, in this embodiment, the thickness of the outer ring portion 812 is smaller than the thickness of the inner ring portion 811 .

[0041] See also Figure 9~Figure 11 , which are respectively a front view of the charging socket and the sealing structure of the present application, a cross-sectional view of the front view of the charging socket and the sealing structure along the EE direction, and an enlarged view of the cross-sectional view of the front view of the charging socket and the sealing structure along the EE direction at F, wherein the first sealing groove 4 is provided with a protruding first sealing ring 7, the first embedded portion 71 is located in the first sealing groove 4, the first protruding portion 72 is protruding relative to the first sealing groove 4, the second sealing groove 5 is provided with a protruding second sealing ring 8, the second embedded portion 81 is located in the second sealing groove 5, the second protruding portion 82 is protruding relative to the second sealing groove 5, wherein the protruding directions of the first protruding portion 72 and the second protruding portion 82 are perpendicular to each other. Specifically, the first protrusion 72 protrudes toward the plug-in end 2 of the charging socket 1, and the second protrusion 82 protrudes toward the center direction of the plug-in hole 3. The advantage of this solution is that the first sealing ring 7 and the second sealing ring 8 cooperate to form a secondary sealing structure, so that the charging socket 1 has better sealing after the charging plug is inserted; a plurality of connecting holes 6 are each provided with a connecting column 9. The advantage of this solution is that the first sealing ring 7 and the second sealing ring 8 are connected by a plurality of connecting columns 9, which can make the first sealing ring 7 and the second sealing ring 8 not easy to fall off from the charging socket 1. It is better that after the charging plug is inserted into the charging socket 1, the sealing structure can also make the charging plug not easy to loosen and fall off.

[0042] When the charging plug is connected to the charging socket 1, the first sealing ring 7 is squeezed by the charging plug. The transition groove 41 cooperates with the transition portion 73 to disperse the pressure on the side wall of the transition groove 41, thereby preventing the first sealing ring 7 from being excessively squeezed and thus being torn. In addition, the transition groove 41 can also cooperate with the mold to guide the flow of the injected material.

[0043] The inner ring portion 811 matches the inner ring groove 51, and the outer ring portion 812 matches the outer ring groove 52. The thickness of the inner ring portion 811 is greater than that of the outer ring portion 812. When the pin of the charging plug is inserted into the socket 3 and the second sealing ring 8 is squeezed by the pin, part of the pressure can be dispersed on the bottom wall of the inner ring groove 51 through the inner ring portion 811, and part of the pressure can be dispersed on the connecting column 9 through the outer ring portion 812, which does not affect the sealing at the socket 3 and can also prevent the second sealing ring 8 from being excessively squeezed and tearing.

[0044] The plug-in end 2 includes a first annular end face 21 and a second annular end face 22; the first annular end face 21 is located between the plug-in hole 3 and the second annular end face 22, the first sealing groove 4 is located between the first annular end face 21 and the second annular end face 22, the first annular end face 21 is protruded relative to the second annular end face 22, and the first sealing ring 7 is protruded relative to the first annular end face 21.

[0045] Further, the first embedded portion 71 is located in the first sealing groove 4, the first protruding portion 72 is protruding relative to the first sealing groove 4, and the first protruding portion 72 is protruding relative to the first annular end face 21, wherein there is a spacing between the first protruding portion 72 and the second annular end face 22; further, the second embedded portion 81 is located in the second sealing groove 5, and the second protruding portion 82 is protruding relative to the second sealing groove 5, wherein the second protruding portion 82 is protruding relative to the hole wall of the plug-in hole 3.

[0046] See also Figure 12~Figure 16, which are respectively a stereoscopic assembly diagram of the manufacturing mold of the present application, a stereoscopic diagram of the pressing plate, a stereoscopic diagram of the injection plate, a stereoscopic diagram of the positioning plate and a stereoscopic diagram of the bottom plate, the manufacturing mold comprises a sealing structure for the charging socket 1, a pressing plate 11 and a bottom plate 12, an injection plate 13 and a positioning plate 14 are arranged between the pressing plate 11 and the bottom plate 12, and the structure of the manufacturing mold is relatively simple; the injection plate 13 is located between the pressing plate 11 and the positioning plate 14, the injection plate 13 is provided with an injection groove 131, and an injection hole 132 is arranged in the injection groove 131 Specifically, sixteen groups of injection holes 132 are provided in the injection groove 131, each group of injection holes 132 includes four through holes, and each group of injection holes 132 matches a charging socket 1, so that the manufacturing mold can manufacture a sealing structure of at most sixteen charging sockets 1 at a time, and the production efficiency is significantly improved; further, the positioning plate 14 is located between the injection plate 13 and the bottom plate 12, the positioning plate 14 is provided with a first mold groove 141, and the bottom plate 12 is provided with a second mold groove 121, and the first mold groove 141 and the second mold groove 12 1 is used to accommodate the charging socket 1. Specifically, the two ends of the charging socket 1 are respectively a plug-in end 2 and a connecting end. The size of the plug-in end 2 is larger than that of the connecting end. The plug-in end 2 matches the first mold groove 141, and the connecting end matches the second mold groove 121. The charging socket 1 is limited in the first mold groove 141 and the second mold groove 121. The material in the injection groove 131 enters the first mold groove 141 through the injection hole 132 and fills the empty space in the first mold groove 141 to complete the injection of the sealing structure; the pressing plate 11 cooperates with the injection plate 13 to squeeze the material in the injection groove 131 and inject it into the first mold groove 141 through the injection hole 132 to form the sealing structure of the charging socket 1. The advantage of this solution is that the squeezed material in the injection groove 131 flows into the first mold groove 141 through the injection hole 132, which makes the flow mode of the material in the manufacturing mold more stable; the manufacturing mold can make the product quality of the sealing structure of the charging socket 1 more stable, and can also effectively reduce the labor cost.

[0047] Preferably, in this embodiment, at least two first positioning holes 15 are provided on the injection plate 13 and the positioning plate 14, and two second positioning holes 16 are provided on the positioning plate 14 and the base plate 12. Not indicated in the figure, the production environment of the manufacturing mold also includes a positioning column, which can be inserted into the first positioning hole 15 and the second positioning hole 16. The first positioning hole 15 and the second positioning hole 16 cooperate to make the injection plate 13, the positioning plate 14 and the base plate 12 coaxially arranged to avoid shaking of the components of the manufacturing mold.

[0048] Preferably, in this embodiment, four first hollow grooves 17 are provided on the injection plate 13, and the four first hollow grooves 17 are symmetrically distributed in pairs on both sides of the injection plate 13, and the first hollow grooves 17 are used for the separation operation of the injection plate 13 and the positioning plate 14; four second hollow grooves 18 are provided on the bottom plate 12, and the four second hollow grooves 18 are symmetrically distributed in pairs on both sides of the bottom plate 12, and the second hollow grooves 18 are used for the separation operation of the bottom plate 12 and the positioning plate 14.

[0049] The purpose of the above embodiments is to explain the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can understand the technical concept of the present invention. Within the scope of the claims of the present invention, it is necessary to explain that the optimization or equivalent replacement of the structure of the parts involved, and the combination of the implementation methods in different embodiments without conflict of structure and principle, all fall within the protection scope of the present invention.

Claims

1. A sealing structure for a charging socket, comprising a charging socket (1); characterized in that: The charging socket (1) comprises a plug end (2) and a plug hole (3) for connecting a charging plug; The plug end (2) is provided with a first sealing groove (4), the hole wall of the plug hole (3) is provided with a second sealing groove (5), and a plurality of communication holes (6) are provided between the first sealing groove (4) and the second sealing groove (5); The first sealing groove (4) is provided with a protruding first sealing ring (7), the second sealing groove (5) is provided with a protruding second sealing ring (8), and a plurality of the communicating holes (6) are each provided with a connecting column (9); wherein the first sealing ring (7) and the second sealing ring (8) are connected via a plurality of connecting columns (9).

2. The sealing structure for a charging socket according to claim 1, characterized in that: The plug end (2) comprises a first annular end surface (21) and a second annular end surface (22); The first annular end surface (21) is located between the plug hole (3) and the second annular end surface (22); The first sealing groove (4) is located between the first annular end surface (21) and the second annular end surface (22); The first annular end surface (21) is arranged to protrude relative to the second annular end surface (22); The first sealing ring (7) is arranged to protrude relative to the first annular end surface (21).

3. The sealing structure for a charging socket according to claim 2, characterized in that: The first sealing ring (7) comprises a first embedded portion (71) and a first protruding portion (72); The first embedded portion (71) is located in the first sealing groove (4), the first protruding portion (72) is arranged to protrude relative to the first sealing groove (4), and the first protruding portion (72) is arranged to protrude relative to the first annular end surface (21), wherein a distance is provided between the first protruding portion (72) and the second annular end surface (22).

4. The sealing structure for a charging socket according to claim 3, characterized in that: A transition groove (41) is provided between the first sealing groove (4) and the connecting hole (6); The first sealing ring (7) further comprises a transition portion (73), wherein the transition portion (73) is located between the first embedded portion (71) and the connecting column (9), and the transition portion (73) matches the transition groove (41); Wherein, the transition groove (41) and the transition portion (73) are both funnel-shaped in structure.

5. The sealing structure for a charging socket according to claim 2, characterized in that: The second sealing ring (8) comprises a second embedded portion (81) and a second protruding portion (82); The second embedded portion (81) is located in the second sealing groove (5), the second protruding portion (82) is arranged to protrude relative to the second sealing groove (5), and the structure of the plug hole (3) is in the shape of an hourglass; Wherein, the second protruding portion (82) is arranged to protrude relative to the hole wall of the plug hole (3).

6. The sealing structure for a charging socket according to claim 5, characterized in that: The second sealing groove (5) comprises an inner annular groove (51) and an outer annular groove (52); The second embedded portion (81) comprises an inner ring portion (811) and an outer ring portion (812), the inner ring portion (811) matches the inner ring groove (51), and the outer ring portion (812) matches the outer ring groove (52); The outer ring portion (812) is located between the inner ring portion (811) and the connecting column (9), the outer ring portion (812) is arranged around the inner ring portion (811), and the connecting column (9) is connected to the outer ring portion (812); Wherein, the thickness of the outer ring portion (812) is smaller than the thickness of the inner ring portion (811).

7. The sealing structure for a charging socket according to claim 6, characterized in that: The outer annular groove (52) is partially embedded in the communicating hole (6).

8. The sealing structure for a charging socket according to claim 1, characterized in that: The first sealing ring (7), the second sealing ring (8) and the connecting column (9) are integrally formed.

9. A manufacturing mold, characterized in that: It comprises a sealing structure for a charging socket according to any one of claims 1 to 8, a pressing plate (11) and a bottom plate (12), wherein an injection plate (13) and a positioning plate (14) are provided between the pressing plate (11) and the bottom plate (12); The injection plate (13) is located between the pressing plate (11) and the positioning plate (14); The injection plate (13) is provided with an injection groove (131), and an injection hole (132) is provided in the injection groove (131); The positioning plate (14) is located between the injection plate (13) and the bottom plate (12); The positioning plate (14) is provided with a first mold groove (141), and the bottom plate (12) is provided with a second mold groove (121); The first mold groove (141) cooperates with the second mold groove (121) to accommodate the charging socket (1); The pressing plate (11) cooperates with the injection plate (13) to squeeze the material in the injection groove (131) and inject it into the first mold groove (141) through the injection hole (132) to form a sealing structure of the charging socket.

10. The manufacturing mold according to claim 9, characterized in that: The injection plate (13) and the positioning plate (14) are each provided with at least two first positioning holes (15), and the positioning plate (14) and the bottom plate (12) are each provided with two second positioning holes (16), and the first positioning holes (15) and the second positioning holes (16) cooperate to allow the injection plate (13), the positioning plate (14) and the bottom plate (12) to be coaxially arranged.

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