Charging socket

Abstract

This specification provides a charging socket, comprising: a first metal unit; a second metal unit; a plastic portion, the plastic portion formed between the first metal unit and the second metal unit; the plastic portion having a first side and a second side opposite to each other; the first metal unit and the second metal unit forming an inserting portion on the first side of the plastic portion; the first metal unit forming a first groove on the outer side wall of the second side of the plastic portion; the second metal unit forming a second groove on the inner side wall of the second side of the plastic portion; and a sealing portion, the sealing portion being arranged between the first metal unit and the second metal unit on the second side of the plastic portion in a filling manner, so that a portion of the sealing portion fills the first groove and the second groove. With the above structure, the first groove and the second groove can automatically compensate for changes in the sealing gap caused by large deformation of the parts, extend the sealing length, and form a corner on the sealing surface, thereby improving the sealing performance of the charging socket.

Description

Technical Field

[0001] The present application belongs to the field of electrical connection mechanism equipment, and in particular relates to a charging socket. Background Art

[0002] In recent years, due to the rapid development of my country's automobile industry, the demand for high sealing of parts in automobile production processes has also increased rapidly. As a technical indicator closely related to the product, sealing has been paid more and more attention by companies, especially for automotive connectors and cavity parts with strict sealing requirements. High sealing is a technical indicator closely related to product quality and safety of use, and is also a key step in verifying the leak-proof or waterproof performance of ordinary products.

[0003] The cavity end face sealing structure usually adopts the traditional O-ring sealing structure. When subjected to severe vibration or thermal deformation, the sealed parts will deform greatly under the conditions of large temperature difference or large vibration. At this time, the O-ring sealing structure cannot automatically compensate for the changes in the sealing gap caused by the deformation of the aforementioned parts, so the sealing effect and quality will be reduced. Summary of the Invention

[0004] The purpose of this application is to provide a charging socket with better sealing performance.

[0005] The present application provides a charging socket, comprising:

[0006] First metal unit;

[0007] a second metal unit sleeved on the outside of the first metal unit;

[0008] a plastic portion formed between the first metal unit and the second metal unit;

[0009] The plastic portion has a first side and a second side opposite to each other;

[0010] The first metal unit and the second metal unit form an inserting portion on the first side of the plastic portion;

[0011] The first metal unit is formed with a first groove on the outer side wall of the second side of the plastic portion;

[0012] The second metal unit is formed with a second groove on the inner side wall of the second side of the plastic portion;

[0013] The sealing portion is arranged between the first metal unit and the second metal unit on the second side of the plastic portion in a filling manner, so that a portion of the sealing portion is filled in the first groove and the second groove.

[0014] Preferably, the first groove and the second groove are arranged at intervals along the long axis direction of the first metal unit.

[0015] Preferably, the first groove and the second groove are annular.

[0016] Preferably, a third metal unit is sleeved on the inner side of the first metal unit, and the plastic part is formed between the first metal unit and the third metal unit; the first metal unit forms a third groove on the inner side wall of the second side of the plastic part, and the sealing part is arranged between the first metal unit and the third metal unit on the second side of the plastic part in a filling manner, so that part of the sealing part is filled in the third groove.

[0017] Preferably, the first groove and the third groove are arranged at intervals along the long axis direction of the first metal unit.

[0018] Preferably, the third groove is annular.

[0019] Preferably, it further includes an outer plastic unit formed on the outside of the second metal unit, the second metal unit having a fourth groove formed on the outer side wall of the second side of the plastic part, and the sealing part is arranged between the outer plastic unit and the second metal unit located on the second side of the plastic part in a filling manner, so that part of the sealing part is filled in the fourth groove.

[0020] Preferably, the second groove and the fourth groove are arranged at intervals along the long axis direction of the second metal unit.

[0021] Preferably, the fourth groove is annular.

[0022] Preferably, the sealing portion is made of liquid sealant.

[0023] The charging socket in the present application has a metal unit with multiple annular grooves, so that liquid sealant can be filled therein, thereby applying a certain pre-tightening force, thereby generating a continuous and uniform radial contraction elastic force, automatically compensating for changes in the sealing gap caused by large deformation of parts, ensuring the sealing effect, and also extending the sealing surface and increasing the sealing corner. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A schematic cross-sectional structure diagram of a charging socket in an embodiment of the present application is shown.

[0026] The figure numbers of the above drawings are: 1. first metal unit; 2. second metal unit; 3. third metal unit; 4. plastic part; 5. first side; 6. second side; 7. first isolation part; 8. second isolation part; 9. sealing part; 10. first groove; 11. second groove; 12. third groove; 13. fourth groove. DETAILED DESCRIPTION

[0027] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0028] Reference Figure 1 As shown, the embodiment of the present application discloses a charging socket, comprising:

[0029] First metal unit 1;

[0030] a second metal unit 2 sleeved on the outside of the first metal unit 1;

[0031] a plastic portion 4 formed between the first metal unit 1 and the second metal unit 2;

[0032] The plastic portion 4 has a first side 5 and a second side 6 opposite to each other;

[0033] The first metal unit 1 and the second metal unit 2 form an inserting portion on the first side 5 of the plastic portion 4;

[0034] The first metal unit 1 is formed with a first groove 10 on the outer side wall of the second side 6 of the plastic portion 4;

[0035] The second metal unit 2 is formed with a second groove 11 on the inner side wall of the second side 6 of the plastic portion 4;

[0036] The sealing portion 9 is provided between the first metal unit 1 and the second metal unit 2 on the second side 6 of the plastic portion 4 by filling, so that part of the sealing portion 9 is filled in the first groove 10 and the second groove 11 .

[0037] With the above structure, the first groove 10 and the second groove 11 can automatically compensate for the change in the sealing gap caused by large deformation of the parts, extend the sealing length, and form a corner on the sealing surface, thereby improving the sealing performance of the charging socket.

[0038] Specifically, in this embodiment, the first metal unit 1 is cylindrical and annular. The second metal unit 2 is also cylindrical and annular. The second metal unit 2 is sleeved outside the first metal unit 1. The plastic portion 4 is formed between the first metal unit 1 and the second metal unit 2 by injection molding, thereby fixing the first metal unit 1 and the second metal unit 2.

[0039] Reference Figure 1 As shown, the plastic portion 4 has opposing upper and lower sides. The lower side of the plastic portion 4 is provided with a first, annular, isolating portion 7 attached to the outer side of the first metal unit 1. This allows the first and second metal units 1 and 2 to form, on the lower side of the plastic portion 4, plug-in connections (first and second terminals) that mate with the plug. Since high-pressure gas enters from the plug-in connection, poor sealing could result in leakage from the other side.

[0040] The first metal unit 1 has a first groove 10 formed on the outer side wall of the upper side of the plastic portion 4. The first groove 10 is annular. The second metal unit 2 has a second groove 11 formed on the inner side wall of the second side 6 of the plastic portion 4. The second groove 11 is annular.

[0041] The sealing portion 9 can be filled with liquid sealant between the first metal unit 1 and the second metal unit 2 on the upper side of the plastic portion 4, thereby fixing and isolating the first metal unit 1 and the second metal unit 2. As a result, the sealing portion 9 will also fully fill the first groove 10 and the second groove 11, thereby applying a certain preload force through the liquid sealant. Because the annular first groove 10 and the second groove 11 generate a continuous and uniform radial contraction elastic force, it automatically compensates for changes in the sealing gap caused by large deformation of the parts, ensuring a good sealing effect.

[0042] Preferably, the first groove 10 and the second groove 11 are spaced apart along the long axis of the first metal unit 1. That is, the first groove 10 is located above the second groove 11. Alternatively, the first groove 10 is located below the second groove 11. Thus, the staggered arrangement of the first groove 10 and the second groove 11 can better automatically compensate for gap variations and improve the connection strength between the first metal unit 1 and the second metal unit 2.

[0043] In another optional embodiment, a third metal unit 3 is sleeved inside the first metal unit 1. The third metal unit 3 is cylindrical. The plastic portion 4 is formed between the first metal unit 1 and the third metal unit 3. A second, annular, isolating portion 8 is provided below the plastic portion 4, which is located outside the first metal unit 1. This allows the third metal unit 3 to form a plug-connecting portion (third terminal) on the lower side of the plastic portion 4 that mates with a plug.

[0044] The first metal unit 1 forms a third groove 12 on the inner sidewall of the second side 6 of the plastic portion 4. The sealing portion 9 is positioned between the first metal unit 1 and the third metal unit 3 in a filling manner, so that a portion of the sealing portion 9 fills the third groove 12, thereby applying a certain preload force through the liquid sealant. The annular third groove 12 generates a continuous and uniform radial contraction force, automatically compensating for changes in the sealing gap caused by large deformation of the parts, ensuring a good sealing effect.

[0045] Preferably, the first groove 10 and the third groove 12 are spaced apart along the long axis of the first metal unit 1. That is, the first groove 10 is located above the third groove 12. Alternatively, the first groove 10 is located below the third groove 12. Thus, the staggered arrangement of the first groove 10 and the third groove 12 can better automatically compensate for gap variations and improve the connection strength between the first metal unit 1 and the third metal unit 3.

[0046] In this embodiment, the first groove 10 is formed above the second groove 11. The second groove 11 and the third groove 12 are substantially located on the same horizontal plane.

[0047] In a preferred embodiment, the charging socket further includes an outer plastic unit formed outside the second metal unit 2. The second metal unit 2 has a fourth groove 13 formed on the outer wall of the second side 6 of the plastic portion 4. The sealing portion 9 is disposed between the outer plastic unit and the second metal unit 2 located on the second side 6 of the plastic portion 4 by filling the fourth groove 13. This allows the liquid sealant to apply a certain preload force. The annular fourth groove 13 generates a continuous and uniform radial contraction force, automatically compensating for changes in the sealing gap caused by large deformation of the component, thereby ensuring a good sealing and tightening effect.

[0048] Preferably, the second groove 11 and the fourth groove 13 are spaced apart along the longitudinal axis of the second metal unit 2. That is, the second groove 11 is located above the fourth groove 13. Alternatively, the second groove 11 is located below the fourth groove 13. Thus, the staggered second groove 11 and fourth groove 13 can better automatically compensate for gap variations and enhance the connection strength between the second metal unit 2 and the outer plastic unit.

[0049] In this embodiment, the first groove 10 is formed above the second groove 11. The second groove 11 and the third groove 12 are substantially located on the same horizontal plane. The first groove 10 and the third groove 12 are substantially located on the same horizontal plane.

[0050] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A charging socket, characterized in that: include: First metal unit; a second metal unit sleeved on the outside of the first metal unit; a plastic portion formed between the first metal unit and the second metal unit; The plastic portion has a first side and a second side opposite to each other; The first metal unit and the second metal unit form an inserting portion on the first side of the plastic portion; The first metal unit is formed with a first groove on the outer side wall of the second side of the plastic portion; The second metal unit is formed with a second groove on the inner side wall of the second side of the plastic portion; a sealing portion, the sealing portion being arranged between the first metal unit and the second metal unit on the second side of the plastic portion by filling, so that a portion of the sealing portion is filled in the first groove and the second groove; The first groove and the second groove are arranged at intervals along the long axis direction of the first metal unit; The first groove and the second groove are annular; A third metal unit is sleeved on the inner side of the first metal unit, and the plastic portion is formed between the first metal unit and the third metal unit; the first metal unit forms a third groove on the inner sidewall of the second side of the plastic portion, and the sealing portion is provided between the first metal unit and the third metal unit in a filling manner, so that a portion of the sealing portion fills the third groove; The first groove and the third groove are arranged at intervals along the long axis direction of the first metal unit; The third groove is annular; The invention further comprises an outer plastic unit formed on the outer side of the second metal unit, wherein the second metal unit has a fourth groove formed on the outer side wall of the second side of the plastic portion, and the sealing portion is provided between the outer plastic unit and the second metal unit located on the second side of the plastic portion by filling, so that a portion of the sealing portion fills the fourth groove; The second groove and the fourth groove are arranged at intervals along the long axis direction of the second metal unit; The fourth groove is annular.

2. The charging socket according to claim 1, characterized in that The sealing portion is made of liquid sealant.

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