Explosion-proof charging gun

Abstract

The utility model relates to the technical field of charging guns, and discloses an explosion-proof charging gun, which comprises a socket and a plug, a locking structure is arranged between the socket and the plug, the locking structure comprises a first pin, a second pin, a third pin and a driving assembly, the driving assembly comprises a sliding shaft, the third pin is linked with the sliding shaft, and the sliding shaft is connected with the plug. The plug is provided with a mounting seat used for accommodating the third pin and the driving assembly, the mounting seat is provided with a sliding hole used for allowing the third pin to enter and exit, the third pin is provided with a linkage groove, the projection plane of the linkage groove on the horizontal plane is of a transverse T-shaped structure, the sliding shaft is provided with a linkage plate, and the linkage plate is located in the linkage groove. By means of the technical scheme, the problem that in the prior art, connection between the sliding shaft and the plug pin of the driving assembly depends on an additional fixing piece is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging gun technical field, especially a kind of explosion-proof charging gun. BACKGROUND

[0002] Explosion-proof charging gun, generally refers to the locking structure between plug and socket charging gun, by reinforcing the connection between plug and socket, to prevent plug from falling off socket, lead to both virtual connection, produce current, electric arc, cause explosion, and then play the role of explosion-proof.

[0003] However, the existing locking structure usually includes several mutually plugged-in pins, wherein the last pin is usually equipped with a driving assembly, which relies on the driving force of the driving assembly to achieve the final locking of the locking structure, so that such locking structure with good locking effect usually depends on the movement of the last pin.

[0004] The last pin and the sliding shaft of the driving assembly are usually provided with a fixing assembly (such as a bolt) for fixing the two, which not only affects the retraction stroke of the sliding shaft, but also causes the problem of disassembly difficulty between the driving assembly and the pin connected thereto during maintenance and repair of the locking structure. SUMMARY

[0005] The main purpose of the utility model is to provide an explosion-proof charging gun, which aims to solve the problem of connection between the sliding shaft of the driving assembly and the pin in the related art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] An explosion-proof charging gun, comprising a socket and a plug, a locking structure is provided between the socket and the plug, the locking structure comprises a first pin, a second pin, a third pin and a driving assembly, the driving assembly comprises a sliding shaft, the third pin is linked with the sliding shaft, the plug is provided with a mounting seat for accommodating the third pin and the driving assembly, the mounting seat is provided with a sliding hole for the third pin to enter and exit the inside thereof, the third pin is provided with a linkage groove, the projection of the linkage groove on the horizontal plane is a horizontally placed "T" shaped structure, the sliding shaft is provided with a linkage plate, and the linkage plate is located in the linkage groove.

[0008] In a possible implementation, the linkage groove penetrates the radial plane of the third pin, and the projection of the third pin in the axial direction is a circular structure; the driving assembly further comprises an electromagnet seat, and the sliding shaft is in sliding connection with the electromagnet seat.

[0009] In a possible implementation, the mounting base comprises a cover plate and a base body, the cover plate is detachably connected with the base body, the base body is fixedly arranged on the plug, and the base body is provided with a mounting groove for embedding the electromagnet base.

[0010] In a possible implementation, the mounting groove comprises a first embedding part, a first movable part and a second movable part, the first movable part is located on one side of the first embedding part close to the third pin, and the second movable part is located on one side of the first embedding part away from the third pin.

[0011] In a possible implementation, the second movable part is an "L" shaped structure, and the opening direction of the "L" shaped structure is towards the first embedding part.

[0012] In a possible implementation, the mounting groove further comprises a second embedding part, the second movable part is located between the second embedding part and the first embedding part, and the second embedding part is provided with a micro switch, and the sliding shaft is connected with the micro switch.

[0013] In a possible implementation, a limiting structure is arranged between the micro switch and the base body.

[0014] In a possible implementation, the limiting structure comprises a limiting pin and a limiting hole for embedding the limiting pin, the limiting hole is arranged on the base body, and the limiting pin is fixedly connected with the micro switch.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] 1. The utility model technical scheme adopts the mode of arranging a linkage groove on the third pin (the pin driven by the driving assembly) and arranging a linkage plate on the sliding shaft of the driving assembly, embedding the linkage plate in the linkage groove, so that the third pin and the sliding shaft do not need additional fixing members to intervene, and the problem that the additional fixing members easily interfere with the normal stroke of the third pin and the sliding shaft is solved from the root. When it is needed to separate the third pin and the sliding shaft from each other, only one of the two is needed to be moved along the opening direction of the linkage groove, so that the linkage relationship between the two can be cancelled, and the mutual separation between the two is very convenient.

[0017] 2. The linkage groove in the utility model technical scheme is a horizontally arranged "T" shaped structure, and correspondingly, the end of the sliding shaft close to the third pin is also a "T" shaped structure (including the linkage plate fixedly arranged on the end), the two "T" shaped structures are embedded in each other, so that the linkage relationship between the two is formed, the structure between the two is compact, and the utility model is particularly suitable for being used on the equipment with limited space such as the charging gun. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0019] Figure 1 It is a structural schematic view of the embodiment;

[0020] Figure 2 It is a partial sectional view of the embodiment;

[0021] Figure 3 It is Figure 2 It is an enlarged view of the partial section at A in the middle;

[0022] Figure 4 It is an explosion view between the electromagnet and the seat body in the embodiment;

[0023] Figure 5 It is Figure 4 It is an enlarged view of the partial section at B in the middle;

[0024] Figure 6 It is a plan view when the embodiment is not equipped with a cover plate;

[0025] Figure 7 It is Figure 6 It is an enlarged view of the partial section at C in the middle;

[0026] Figure 8 It is a cooperation schematic view of the third pin and the driving assembly in the embodiment.

[0027] Explanation of reference numerals:

[0028] 1, socket; 2, plug; 21, mounting seat; 211, sliding hole; 212, cover plate; 213, seat body; 214, mounting groove; 2141, first embedded part; 2142, first movable part; 2143, second movable part; 2144, second embedded part; 3, locking structure; 31, first pin; 32, second pin; 33, third pin; 331, linkage groove; 34, driving assembly; 341, sliding shaft; 342, electromagnet seat; 343, micro switch; 344, linkage plate; 4, limiting structure; 41, limiting pin; 42, limiting hole.

[0029] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0031] As shown in Figures 1-3 , Figure 8 , the present embodiment provides an explosion-proof charging gun, mainly comprising a socket 1 and a plug 2, and a locking structure 3 is arranged between the socket 1 and the plug 2. With the presence of the locking structure 3, it is ensured that the plug 2 can be fixed when cooperating with the socket 1, so that the plug 2 does not fall off from the socket 1 during the charging process, causing virtual connection between them and arc to cause explosion, effectively playing the role of explosion-proof and anti-explosion.

[0032] Specifically, the locking structure 3 comprises a first pin 31, a second pin 32, a third pin 33 and a driving assembly 34, wherein the first pin 31 is fixedly arranged on the plug 2 and is used for inserting the second pin 32, the second pin 32 is slidingly arranged on the socket 1 and its sliding movement determines whether it is embedded in the first pin 31, and the side surface of the second pin 32 is provided with a clamping groove for embedding the third pin 33. In this way, the locking structure 3 has the effect of multiple locking, effectively ensuring the locking reliability of the locking structure 3.

[0033] At the same time, the plug 2 is provided with a mounting seat 21 for accommodating the third pin 33 and the driving assembly 34, and the presence of the mounting seat 21 provides sufficient space for placing the third pin 33 and the driving assembly 34. In order to adapt to the sliding movement of the third pin 33 under the action of the driving assembly 34, the mounting seat 21 is provided with a sliding hole 211 for the third pin 33 to enter and exit the inside of the mounting seat 21.

[0034] The driving assembly 34 comprises a sliding shaft 341, and correspondingly, the third pin 33 and the sliding shaft 341 are linked. Unlike the conventional linkage mode of fixing the third pin 33 and the sliding shaft 341 by bolts and other fixing members, the third pin 33 and the sliding shaft 341 in the present embodiment are linked by mutual clamping.

[0035] Specifically, the third pin 33 in the embodiment is provided with a linkage groove 331, the projection of the linkage groove 331 on the horizontal plane is a horizontally placed “T” shaped structure, the sliding shaft 341 is provided with a linkage plate 344, the linkage plate 344 is preferably fixedly connected with the sliding shaft 341 by an integral molding manner, so as to ensure the connection strength between the two. In this way, after the linkage plate 344 is matched, one end of the sliding shaft 341 close to the third pin 33 can present a “T” shaped structure corresponding to the linkage groove 331. Then, the linkage plate 344 is located in the linkage groove 331, and the linkage relationship between the third pin 33 and the sliding shaft 341 can be established by means of the mutual fitting relationship between the two “T” shaped structures.

[0036] The problem that the fixing member between the third pin 33 and the sliding shaft 341 easily interferes with the normal stroke of the third pin 33 and the sliding shaft 341 is solved from the root. When it is needed to separate the third pin 33 and the sliding shaft 341 from each other, only one of the two is needed to be moved along the opening direction of the linkage groove 331, so as to cancel the linkage relationship between the two, which greatly facilitates the separation work between the two.

[0037] As to how to drive the sliding shaft 341 to move, the embodiment is preferably electromagnetically driven, that is, the driving assembly 34 further includes an electromagnet seat 342, the sliding shaft 341 is slidably connected with the electromagnet seat 342, the existence of the electromagnet seat 342 not only can serve as the carrier of the sliding shaft 341, but also can drive the sliding shaft 341 to move, and when the sliding shaft 341 is reinstalled, the electromagnet seat 342 can also play a role of rapid positioning.

[0038] Correspondingly, the sliding shaft 341 is made of a magnetic material; the electromagnet seat 342 is built-in with an electromagnet; the embodiment is provided with a control switch of the driving assembly 34 (the electromagnet), so as to ensure that the operation mode of the driving assembly 34 can be artificially controlled. The specific structure of the control switch and the control method of the driving assembly 34 should be determined according to the type of the electromagnet actually selected, because the magnetic field switching modes of different electromagnets are different, such as changing the current direction, changing the coil winding direction, etc. Therefore, the embodiment will not be described again.

[0039] The projection of the third pin 33 on the axial direction is a circular structure, the design of the circular structure lays a foundation for the possibility that the third pin 33 and the sliding shaft 341 can perform a rotating movement in the sliding hole 211; the corner features of the third pin 33 itself are eliminated, so that part of the force can be eliminated by rotating movement during the force process, which greatly improves the structural strength and reliability of the locking structure 3.

[0040] And due to the constraint of the sliding hole 211, when the third pin 33 and the embedded part of the sliding shaft 341 are located in the sliding hole 211, the third pin 33 or the sliding shaft 341 cannot be linked along the opening direction of the linkage groove 331, so as to effectively avoid the separation of the third pin 33 or the sliding shaft 341 due to the rotating movement of the third pin 33 or the sliding shaft 341.

[0041] The linkage groove 331 penetrates the radial surface of the third pin 33, and the linkage groove 331 has two openings, so that when the third pin 33 rotates during movement, the third pin 33 or the sliding shaft 341 can be manually rotated to ensure that the third pin 33 and the sliding shaft 341 are at the correct angle, facilitating the separation of the third pin 33 and the sliding shaft 341.

[0042] As shown in Figure 1 , Figures 6-7 , the mounting seat 21 is provided with a mounting groove 214 for embedding the electromagnet seat 342, so that through the embedding between the electromagnet seat 342 and the mounting groove 214, the locking structure 3 can be quickly reset after maintenance.

[0043] Specifically, the mounting seat 21 includes a cover plate 212 and a seat body 213, and the cover plate 212 is detachably connected with the seat body 213 through a plurality of bolts, so as to ensure that the user can open the mounting seat 21. The seat body 213 is fixedly arranged on the plug 2 in an integral molding manner, so as to ensure the connection reliability and strength between the seat body 213 and the plug 2. The mounting groove 214 is arranged on the seat body 213.

[0044] The mounting groove 214 includes a first embedding part 2141, a first movable part 2142, and a second movable part 2143. The existence of each movable part (the first movable part 2142 and the second movable part 2143) exposes the sliding shaft 341 and the third pin 33 and the movement stroke of the two to the inside of the mounting seat 21, effectively facilitating the adjustment of the two by the worker.

[0045] The first movable part 2142 is located on the side of the first embedding part 2141 close to the third pin 33, and the second movable part 2143 is located on the side of the first embedding part 2141 away from the third pin 33, so that the existence of each movable part makes both sides of the first embedding part 2141 have an opening structure, so that after the mounting seat 21 (the cover plate 212) is opened, the electromagnet seat 342 and the sliding shaft 341 can be separated from the seat body 213 by directly grabbing the electromagnet seat 342.

[0046] The second movable part 2143 has an "L" shaped structure and its opening faces the first embedded part 2141. That is, the bottom of the first embedded part 2141 also has an opening structure. In this way, when disassembling the electromagnet base 342 and the sliding shaft 341, the electromagnet base 342 can be directly pried by external tools such as bent tweezers, which further improves the disassembly efficiency of the electromagnet base 342 and the sliding shaft 341.

[0047] Meanwhile, in order to ensure that the drive assembly 34 can stably control the third pin 33, a micro switch 343 is provided in the mounting slot 214. Correspondingly, the mounting slot 214 also includes a second embedding part 2144 for embedding the micro switch 343. The second movable part 2143 is located between the second embedding part 2144 and the first embedding part 2141. The sliding shaft 341 is linked with the micro switch 343, that is, the sliding shaft 341 is directly pushed to move by the extension and retraction movement of the output shaft of the micro switch 343, so as to ensure that the third pin 33 can stably fix the other pins.

[0048] like Figures 3-8 As shown, in order to prevent the movement of the sliding shaft 341 from being affected by the presence of the micro switch 343 when separating the third pin 33 from the sliding shaft 341, the micro switch 343 usually needs to be disassembled when removing the third pin 33 and the electromagnet base 342. Therefore, a limiting structure 4 is provided between the micro switch 343 and the base 213.

[0049] The presence of the limiting structure 4 ensures that the installation position of the micro switch 343 can be quickly and accurately located when reinstalling the micro switch 343.

[0050] Specifically, the limiting structure 4 includes a limiting pin 41 and a limiting hole 42 for the limiting pin 41 to be inserted. The limiting hole 42 is formed on the base 213. The limiting pin 41 and the housing of the micro switch 343 are integrally formed to achieve a fixed connection, which fully ensures the connection strength between the limiting pin 41 and the base 213. In this way, the micro switch 343 can be quickly positioned in the mounting base 21 by means of the cooperation between the limiting pin 41 and the limiting hole 42.

[0051] Meanwhile, the end of the output shaft of the micro switch 343 that is close to the third pin 33 is located in the second movable part 2143. With the help of this positional relationship, the mounting groove 214 can also play a role in restraining the micro switch 343 to a certain extent.

[0052] Preferably, in this embodiment, the micro switch 343 and the electromagnet base 342 are powered directly from the charging pile. The specific method of power extraction (how the cables and wires are distributed) should be determined according to the actual model and structure of the charging pile, which will not be elaborated in this embodiment.

[0053] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0054] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof charging gun, comprising a socket (1) and a plug (2), a locking structure (3) being arranged between the socket (1) and the plug (2), the locking structure (3) comprising a first pin (31), a second pin (32), a third pin (33) and a driving assembly (34), the driving assembly (34) comprising a sliding shaft (341), the third pin (33) being linked with the sliding shaft (341), the plug (2) being provided with a mounting seat (21) for accommodating the third pin (33) and the driving assembly (34), the mounting seat (21) being provided with a sliding hole (211) for the third pin (33) to enter and exit the inside of the mounting seat (21), characterized in that, The third pin (33) is provided with a linkage groove (331), the projection of the linkage groove (331) on the horizontal plane is a transversely arranged "T" shaped structure, the linkage plate (344) is arranged on the sliding shaft (341), and the linkage plate (344) is located in the linkage groove (331).

2. The flameproof charging gun according to claim 1, characterized in that, The linkage groove (331) penetrates the radial plane of the third pin (33), and the projection of the third pin (33) in the axial direction is a circular structure. The driving assembly (34) further comprises an electromagnet base (342), and the sliding shaft (341) is in sliding connection with the electromagnet base (342).

3. The flameproof charging gun according to claim 2, characterized in that, The mounting seat (21) comprises a cover plate (212) and a seat body (213), the cover plate (212) is detachably connected with the seat body (213), the seat body (213) is fixedly arranged on the plug (2), and the seat body (213) is provided with a mounting groove (214) for embedding the electromagnet base (342).

4. The flameproof charging gun according to claim 3, characterized in that, The mounting groove (214) comprises a first embedding portion (2141), a first movable portion (2142) and a second movable portion (2143), the first movable portion (2142) is located on the side of the first embedding portion (2141) close to the third pin (33), and the second movable portion (2143) is located on the side of the first embedding portion (2141) away from the third pin (33).

5. The flameproof charging gun according to claim 4, characterized in that, The second movable portion (2143) is in an "L" shaped structure, and the opening direction thereof faces the first embedding portion (2141).

6. The flameproof charging gun according to claim 4, characterized in that, The mounting groove further comprises a second embedding portion (2144), and the second movable portion (2143) is located between the second embedding portion (2144) and the first embedding portion (2141). The second embedding portion (2144) is provided with a micro switch (343), and the sliding shaft is linked with the micro switch (343).

7. The flameproof charging gun according to claim 6, characterized in that, A limiting structure (4) is arranged between the micro switch (343) and the seat body (213).

8. The flameproof charging gun according to claim 7, characterized in that, The limiting structure (4) comprises a limiting pin (41) and a limiting hole (42) for embedding the limiting pin (41), the limiting hole (42) is arranged on the seat body (213), and the limiting pin (41) is fixedly connected with the micro switch (343).

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