Charging gun head structure and charging gun

Abstract

The utility model relates to the technical field of charging guns, and discloses a charging gun head structure and a charging gun. The sealing piece is arranged on the peripheral side of the gun head body in a sleeving mode and abuts against the peripheral side area of the automobile charging interface; the sealing piece comprises a first supporting ring arranged on the peripheral side of the gun head body in a sleeving mode. The first support ring has radial elasticity so as to be hermetically connected with the gun head body; a first elastic sleeve capable of stretching and retracting in the axial direction is fixed to the inner circumferential wall or the outer circumferential wall of the first supporting ring. The first elastic sleeve is connected with a second supporting ring; a second elastic sleeve capable of stretching and retracting in the axial direction is fixed to the inner circumferential wall or the outer circumferential wall of the second supporting ring. A third supporting ring is fixed to the inner circumferential wall or the outer circumferential wall of the second elastic sleeve. The two ends of the elastic reset piece are fixed to the gun head body and the third supporting ring respectively. According to the utility model, through the sealing member and the elastic reset member, when an automobile is charged in rainy days, the elastic reset member enables the sealing member to tightly abut against the peripheral side of the automobile charging interface, so that rainwater entering is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging gun technical field, specifically, relate to a charging gun head structure and charging gun. BACKGROUND

[0002] With the rapid development of new energy automobile industry, the charging performance and safety reliability of electric vehicles increasingly become the focus. As the key component connecting charging equipment and vehicle charging interface, the sealing performance of charging gun is directly related to the safety and efficiency of charging process. In outdoor charging scene, the charging gun head needs to effectively prevent rainwater, dust and other pollutants from entering the inside of the charging interface to avoid electrical short circuit, poor contact or electric shock risk.

[0003] At present, the common charging gun head sealing structure in the market adopts a single rubber sealing ring. The sealing ring is sleeved on the gun head body, and when it is connected with the vehicle charging interface, it is compressed by the elastic deformation of the rubber itself and the interface circumference to realize static sealing. However, this traditional structure has defects: first, the sealing reliability of single sealing ring is limited, and the sealing performance of rubber decreases after long-term use, thereby reducing the waterproof and dustproof effect; second, the existing waterproof design of charging gun head is not convenient to store, and when the vehicle is charging in sunny weather, the waterproof design structure will also surround the vehicle charging interface, which is not conducive to heat dissipation. SUMMARY

[0004] To solve at least one of the above problems, the utility model first provides a charging gun head structure, which comprises: a gun head body; a sealing element, which is sleeved on the circumference of the gun head body and abuts against the circumference area of the vehicle charging interface to seal between the vehicle charging interface and the gun head body; the sealing element comprises a first supporting ring sleeved on the circumference of the gun head body; the first supporting ring has radial elasticity to be sealingly connected with the gun head body; the inner or outer circumferential wall of the first supporting ring is fixed with a first elastic sleeve which can axially stretch and contract; the first elastic sleeve is connected with a second supporting ring; the inner or outer circumferential wall of the second supporting ring is fixed with a second elastic sleeve which can axially stretch and contract; the inner or outer circumferential wall of the second elastic sleeve is fixed with a third supporting ring; an elastic return element, which is fixed at both ends with the gun head body and the third supporting ring to make the sealing element extend along the axial direction; the diameters of the third supporting ring, the second supporting ring and the first supporting ring decrease in turn; the diameters of the second elastic sleeve and the first elastic sleeve decrease in turn.

[0005] Optionally, a plurality of radial constraint elements are sleeved on the circumference of the sealing element to generate continuous contraction force on the sealing element to reduce the entry of rainwater into the sealing element.

[0006] Optionally, the elastic reset member is at least two and symmetrically fixed on the gun head body.

[0007] Optionally, the elastic reset member is provided with a hook portion at each end; the third supporting ring is provided with a first hanging portion on the inner surface for hooking connection with the hook portion; and the gun head body is provided with a second hanging portion on the circumferential side for hooking connection with the hook portion.

[0008] Optionally, the first hanging portion is a fixed ring fixed on the inner surface of the third supporting ring; the gun head body is provided with a connecting flange on the circumferential side; and the second hanging portion is a through hole provided on the surface of the connecting flange, and the second hanging portion is distributed along the circumference of the surface of the connecting flange.

[0009] Optionally, the gun head body is provided with a limiting portion on the circumferential side; the third supporting ring is provided with a limiting matching portion on the inner wall; and the limiting matching portion is matched with the limiting portion to fold and store the sealing member.

[0010] Optionally, the limiting portion is a limiting protruding block structure; and the limiting matching portion is a clamping block structure corresponding to the limiting portion.

[0011] Optionally, the limiting portion is provided with a first guide inclined surface and a second guide inclined surface arranged oppositely; the first guide inclined surface is away from the first supporting ring; and the slope of the first guide inclined surface is smaller than the slope of the second guide inclined surface, so as to facilitate folding and storing and fixing of the sealing member.

[0012] Optionally, the limiting portion is a limiting recess structure; and the limiting matching portion is a protruding block structure corresponding to the limiting portion.

[0013] Compared with the prior art, in the utility model, by setting the sealing member and the elastic reset member, the elastic reset member tightly abuts against the circumferential side of the automobile charging interface in rainy days, so as to reduce the rainwater from entering; and the limiting portion of the gun head body is clamped with the limiting matching portion of the third supporting ring, so as to fix the folded sealing member, facilitate the user to not use the sealing member in sunny days, and facilitate heat dissipation of the automobile charging interface.

[0014] The utility model also provides a charging gun which comprises the charging gun head structure, and has the beneficial effects of the charging gun head structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an installation structure diagram of the charging gun, the gun head body and the sealing member in the utility model;

[0016] Figure 2 It is a structure diagram of the gun head body and the sealing member in the utility model;

[0017] Figure 3 Figure 1 is a structural diagram of a gun head body, an elastic reset member and a sealing member in the utility model;

[0018] Figure 4 Figure 1 is a structural diagram of a gun head body, an elastic reset member and a sealing member in the utility model;

[0019] Figure 5 Figure 1 is a structural diagram of a gun head body, an elastic reset member and a sealing member in the utility model.

[0020] Mark explanation:

[0021] 1-gun head body; 2-sealing member; 3-radial constraint member; 4-elastic reset member; 101-second hanging part; 102-connection flange; 103-limiting part; 201-first support ring; 202-first elastic sleeve; 203-second support ring; 204-second elastic sleeve; 205-third support ring; 401-hook part; 1031-first guide inclined surface; 1032-second guide inclined surface; 2051-first hanging part; 2052-limiting matching part. Specific implementation

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0023] In the description of the utility model, it is understood that the terms "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship when the product is normally used.

[0024] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0025] The utility model provides a kind of charging gun head structure, please refer to Figures 1-4As shown, it comprises: a gun head body 1; a sealing element 2, which is sleeved on the periphery of the gun head body 1 and abuts against the peripheral area of the automobile charging interface to seal the automobile charging interface and the gun head body 1; the sealing element 2 comprises a first supporting ring 201 sleeved on the periphery of the gun head body 1; the first supporting ring 201 is radially elastic to be sealingly connected with the gun head body 1; the inner or outer circumferential wall of the first supporting ring 201 is fixed with an axially extendable first elastic sleeve 202; the first elastic sleeve 202 is connected with a second supporting ring 203; the inner or outer circumferential wall of the second supporting ring 203 is fixed with an axially extendable second elastic sleeve 204; the inner or outer circumferential wall of the second elastic sleeve 204 is fixed with a third supporting ring 205; an elastic return element 4, which is fixed at both ends with the gun head body 1 and the third supporting ring 205 to make the sealing element 2 extend axially; the diameters of the third supporting ring 205, the second supporting ring 203 and the first supporting ring 201 are gradually reduced; the diameters of the second elastic sleeve 204 and the first elastic sleeve 202 are gradually reduced; the diameter of the third supporting ring 205 is designed to adapt to the circumferential size of the automobile charging interface; the diameter of the first supporting ring 201 is designed to adapt to the circumferential size of the gun head body 1; in addition, the different diameters facilitate the folding of the sealing element 2, especially in sunny weather, the folding of the sealing element 2 facilitates the heat dissipation of the automobile charging interface.

[0026] In an embodiment, as shown in the figure, Figures 1-3 The sealing element 2 is sleeved with a plurality of radial constraint elements 3 to generate a continuous contraction force on the sealing element 2 to reduce the entry of rainwater into the sealing element 2; the automobile charging interface is generally protruded on the automobile, when the third supporting ring 205 and the second elastic sleeve 204 of the sealing element 2 are sleeved on the periphery of the automobile charging interface, the radial constraint element 3 radially constrains the second elastic sleeve 204, thereby preventing rainwater or dust from entering the automobile charging interface along the second elastic sleeve 204, thereby avoiding poor contact; the radial constraint element 3 adopts but is not limited to an elastic rubber ring; the radial constraint element 3 can be provided with one or more, when one radial constraint element 3 is adopted, the radial constraint element 3 is as close as possible to the third supporting ring 205, that is, as close as possible to the root of the automobile charging interface to avoid the entry of rainwater.

[0027] In an embodiment, as shown in the figure, Figure 2 The elastic return element 4 adopts but is not limited to a compression spring, and the elastic return element 4 has an axial outward force on the third supporting ring 205 in the natural elongation state, thereby making the sealing element 2 have a tendency to extend axially in the natural state; the elastic return element 4 presses the third supporting ring 205, thereby tightly abutting the third supporting ring 205 against the periphery of the automobile charging interface to prevent the entry of rainwater and dust.

[0028] In an embodiment, as shown in the figure,Figure 2 As shown, the elastic reset member 4 is provided with a hook portion 401 at each end, facilitating connection; the inner surface of the third supporting ring 205 is provided with a first hanging portion 2051 for hooking connection with the hook portion 401; the peripheral side of the gun head body 1 is provided with a second hanging portion 101 for hooking connection with the hook portion 401, facilitating disassembly.

[0029] In an embodiment, as shown in Figure 4 The first hanging portion 2051 is a fixed ring fixed to the inner surface of the third supporting ring 205, and the hook portion 401 is directly hooked with the fixed ring; the peripheral side of the gun head body 1 is provided with a connecting flange 102; the second hanging portion 101 is a through hole opened on the surface of the connecting flange 102, and the second hanging portion 101 is distributed along the circumference of the surface of the connecting flange 102; the hook portion 401 is directly hung with the through hole.

[0030] In an embodiment, as shown in Figure 5 The peripheral side of the gun head body 1 is provided with a limiting portion 103; the inner wall of the third supporting ring 205 is provided with a limiting matching portion 2052; the limiting matching portion 2052 cooperates with the limiting portion 103 to fold and store the sealing member 2.

[0031] In an embodiment, as shown in Figure 5 The limiting portion 103 is a limiting protrusion structure; the limiting matching portion 2052 is a corresponding clamping block structure of the limiting portion 103; the specific principle is as follows: in the normal state, the elastic reset member 4 has an axial outward force on the third supporting ring 205 when it is in a natural elongation state, so that the sealing member 2 has a tendency to extend axially in a natural state; when it is necessary to store the sealing member 2, the third supporting ring 205 is pulled back, so that the elastic reset member 4 is compressed until the limiting matching portion 2052 on the third supporting ring 205 is clamped with the limiting portion 103, thereby storing and fixing the sealing member 2. The limiting portion 103 has a first guide inclined surface 1031 and a second guide inclined surface 1032 arranged oppositely; the first guide inclined surface 1031 is away from the first supporting ring 201; the slope of the first guide inclined surface 1031 is smaller than the slope of the second guide inclined surface 1032, facilitating folding, storing and fixing of the sealing member 2; when the sealing member 2 is stored, the third supporting ring 205 is pulled back until the limiting matching portion 2052 on the third supporting ring 205 slides along the first guide inclined surface 1031 to the second guide inclined surface 1032; since the slope of the second guide inclined surface 1032 is larger, the third supporting ring 205 is easily fixed and will not be easily ejected by the elastic reset member 4.

[0032] In an embodiment, the limiting portion 103 is a limiting groove structure, which is not shown in the figure; the limiting matching portion 2052 is a protrusion structure corresponding to the limiting portion 103, which is clamped into the limiting groove structure, also playing a limiting role on the third supporting ring 205, thereby folding, storing and fixing the sealing member 2.

[0033] The utility model still provides a kind of charging gun, including the charging gun head structure of above.

[0034] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this only. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present utility model.

Claims

1. A charging gun head structure, characterized in that, The utility model relates to a gun head body (1); Seal (2), the seal (2) is sleeved in the lateral side of the gun head body (1) and is in contact with the lateral side area of automobile charging interface, to seal between the automobile charging interface and the gun head body (1), the seal (2) includes the first support ring (201) that is sleeved in the lateral side of the gun head body (1), the first support ring (201) has radial elasticity to be sealed with the gun head body (1) connection, the inner peripheral wall or the outer peripheral wall of first support ring (201) is fixed with the first elastic sleeve (202) that can be axially telescopic, the first elastic sleeve (202) is connected with second support ring (203), the inner peripheral wall or the outer peripheral wall of second support ring (203) is fixed with the second elastic sleeve (204) that can be axially telescopic, the inner peripheral wall or the outer peripheral wall of second elastic sleeve (204) is fixed with third support ring (205), third support ring (205) is sleeved in the lateral side of the automobile charging interface, Elastic resettable part (4), the elastic resettable part (4) both ends are fixed with the gun head body (1) and third support ring (205) respectively, to make the seal (2) extend along the axial direction. The lateral side of the seal (2) is sleeved with a plurality of radial constraint members (3), to generate the continuous shrinkage force of the seal (2) and reduce the rainwater into the seal (2), the elastic resettable part (4) at least has two, and is fixed on the gun head body (1) symmetrically.

2. The charging gun head structure according to claim 1, characterized in that, The diameter of third support ring (205), second support ring (203), first support ring (201) decreases gradually, the diameter of second elastic sleeve (204), first elastic sleeve (202) decreases gradually.

3. The charging gun head structure according to claim 1, characterized in that, The both ends of the elastic resettable part (4) are respectively provided with hook parts (401), the inner surface of third support ring (205) is provided with first hanging parts (2051) for hooking connection with the hook parts (401), the lateral side of the gun head body (1) is provided with second hanging parts (101) for hooking connection with the hook parts (401).

4. The charging gun head structure of claim 1, wherein, The first hanging parts (2051) are fixed rings fixed to the inner surface of the third support ring (205), the lateral side of the gun head body (1) is provided with a connecting flange (102), and the second hanging parts (101) are through holes formed on the surface of the connecting flange (102), and the second hanging parts (101) are distributed along the circumference of the surface of the connecting flange (102).

5. The charging gun head structure according to claim 4, characterized in that, The lateral side of the gun head body (1) is provided with a limiting portion (103), the inner wall of the third support ring (205) is provided with a limiting matching portion (2052), and the limiting matching portion (2052) is matched with the limiting portion (103) to fold the seal (2) and store.

6. The charging gun head structure according to any one of claims 1-5, characterized in that, The limiting portion (103) is a limiting protruding block structure, and the limiting matching portion (2052) is a clamping block structure corresponding to the limiting portion (103).

7. The charging gun head structure according to claim 6, characterized in that, ​ 8. The charging gun head structure according to claim 7, characterized in that, The limiting part (103) has oppositely arranged first and second guide inclined surfaces (1031, 1032); the first guide inclined surface (1031) is away from the first supporting ring (201); the slope of the first guide inclined surface (1031) is smaller than the slope of the second guide inclined surface (1032), so as to facilitate folding and fixing of the sealing element (2).

9. The charging gun head structure of claim 6, wherein, The limiting part (103) is a limiting groove structure; and the limiting fitting part (2052) is a protruding block structure corresponding to the limiting part (103).

10. A charging gun, characterized in that, The charging gun head structure as claimed in any one of claims 1-9.

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