An alternating current charging gun
By introducing a linkage mechanism and an anti-freeze mechanism into the AC charging gun, and utilizing the anti-freeze properties of the elastic airbag and plastic material, the problem of the charging gun jamming in low-temperature rain and snow environments has been solved, enabling normal use and improving the reliability of the charging gun.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAHONG (XIAN) SMART TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-03
Smart Images

Figure CN224447495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charging guns, and more specifically, to an AC charging gun. Background Technology
[0002] With social development and calls for environmental protection, electric vehicles have begun to appear. Previously, only electric motorcycles existed, but with scientific advancements, electric cars have also emerged. When charging electric cars, an AC charging gun is required.
[0003] In existing technologies, AC charging guns generally employ a mechanical button-type locking structure to achieve a self-locking function when plugged in or unplugged; however, this design has significant drawbacks in rainy, snowy, and low-temperature environments:
[0004] Rainwater or snow can easily seep into the gap between the button and the gun body. After freezing at low temperatures, the button's movement mechanism will be completely stuck, and the user will be unable to trigger the unlocking. The freezing phenomenon causes the charging gun to lose its normal operation capability, and forced operation may cause mechanical parts to break or electrical contact to fail.
[0005] The aforementioned problems prevent traditional button-type charging guns from being used reliably in cold, rainy, and snowy regions, severely restricting the all-weather charging needs of electric vehicles.
[0006] Therefore, an AC charging gun is proposed. Utility Model Content
[0007] In view of the problems existing in the prior art, the purpose of this utility model is to provide an AC charging gun that can be used normally in rainy or snowy weather.
[0008] To solve the above problems, the present invention adopts the following technical solution.
[0009] An AC charging gun includes a housing, on which a charging head is provided;
[0010] A mounting rod is horizontally fixedly installed on the end face of the housing. A sliding groove is provided on the side wall of the mounting rod, and a locking block is slidably installed in the sliding groove.
[0011] The bottom wall of the housing has an installation hole, in which a circular mounting plate is rotatably mounted. A plate buckle is fixedly mounted on the bottom wall of the mounting plate. The housing is provided with a linkage mechanism that enables the plate buckle to move in conjunction with the locking block. The housing is also provided with an antifreeze mechanism that cooperates with the plate buckle.
[0012] In winter, the antifreeze mechanism prevents the mounting plate from freezing to the housing. Therefore, when charging is needed, the user first removes the housing and presses the plate latch with their finger. At this time, the latch retracts into the slide groove under the action of the linkage mechanism.
[0013] Then insert the charging head on the housing into the vehicle's charging port, and then release the buckle. At this time, under the action of the linkage mechanism, the locking block extends out from the slide groove and fits tightly against the side wall of the charging port, thereby fixing the housing, that is, fixing the charging head to the vehicle's charging port, so that the charging gun can be used normally in winter.
[0014] Furthermore, the linkage mechanism includes a spring fixedly installed between the locking block and the top wall of the slide groove. Under the action of the spring, the locking block is in a state of extending out of the slide groove. A partition is vertically fixedly installed on the inner wall of the housing. A mounting plate is located between the partition and the mounting rod. A connecting rod is fixedly installed on the top wall of the mounting plate. An elastic airbag is installed between the connecting rod and the partition. Because the elastic airbag is elastic, the plate buckle can be kept in a vertical state when it is not under force. When the user presses the plate buckle, the plate buckle drives the circular mounting plate to rotate. Because the plate buckle and the connecting rod are connected... The connecting rods are symmetrically distributed on the top and bottom walls of the circular mounting plate. Therefore, when the mounting plate rotates, it causes the connecting rods to move away from the elastic airbag. At this time, the connecting rods pull the elastic airbag, making the inside of the elastic airbag negatively pressurized. The side wall of the elastic airbag is inserted with a conduit extending into the groove and located in the space above the locking block. Under the action of the conduit, the elastic airbag in the negative pressure state draws air from the groove through the conduit. At this time, the groove is also in a negative pressure state, which can provide an attractive force to the locking block through the negative pressure, causing the locking block to retract into the groove. Therefore, it plays the role of making the locking block move in conjunction with the plate buckle.
[0015] Furthermore, the shell is made of plastic containing propylene glycol and glycerin, thereby increasing the plastic's antifreeze properties.
[0016] Furthermore, the antifreeze mechanism includes an elastic sleeve fitted over the outside of the plate buckle. The bottom end of the elastic sleeve is sealed, the top end of the elastic sleeve is open, and the edge of the top end of the elastic sleeve is fixedly connected to the outer wall of the housing. The elastic sleeve covers the outside of the mounting plate. Therefore, the elastic sleeve can wrap the plate buckle and the mounting plate, preventing rain and snow from directly contacting the mounting plate and preventing ice from forming at the connection between the mounting plate and the housing.
[0017] Furthermore, both the elastic sleeve and the elastic airbag are made of nitrile rubber, which maintains elasticity at low temperatures, ensuring that the elastic airbag and elastic sleeve can operate normally.
[0018] Furthermore, an elastic pad is fixedly installed at the bottom of the card block. When the card block extends out of the groove, the elastic pad is squeezed and deformed, which increases the contact area between the elastic pad and the car charging port, increases the friction, and thus improves the fixing effect of the charging gun.
[0019] Furthermore, the elastic sleeve is fixedly fitted onto the outside of the buckle, and the outer wall of the elastic sleeve is provided with anti-slip texture, thereby increasing the friction between the finger and the elastic sleeve and ensuring that the user can press the buckle normally.
[0020] Furthermore, the spring is made of a metal material, thereby ensuring that the spring can remain elastic in winter.
[0021] Furthermore, both the sidewalls of the slide and the locking block are mirrored. Because the surface of the mirror is smooth, it can reduce the friction between the slide and the locking block, ensuring that the sidewall of the locking block can fit against the sidewall of the slide, thus ensuring that the locking block can move normally.
[0022] Furthermore, the elastic pad is made of rubber material. Since rubber material has strong wear resistance, making the elastic pad with rubber material can extend the service life of the elastic pad and save costs.
[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0024] 1. This solution, with its anti-freeze mechanism, prevents the mounting plate from freezing to the housing. Therefore, when charging is needed, the user first removes the housing and presses the plate latch with their finger. At this time, under the action of the linkage mechanism, the latch retracts into the slide groove. Then, the charging head on the housing is inserted into the vehicle's charging port, and the plate latch is released. At this time, under the action of the linkage mechanism, the latch extends out of the slide groove and fits tightly against the side wall of the charging port, thus fixing the housing and the charging head to the vehicle's charging port. This allows the charging gun to be used normally in winter.
[0025] 2. In this design, the shell is made of plastic containing propylene glycol and glycerin, which increases the plastic's antifreeze properties. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0027] Figure 2 This is a front sectional view of the present invention.
[0028] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;
[0029] Figure 4 This is a schematic diagram of the combined structure of the card block and the elastic pad of this utility model.
[0030] Explanation of the labels in the diagram:
[0031] 1. Housing; 2. Charging head; 3. Mounting rod; 4. Clip; 5. Mounting plate; 6. Plate buckle; 7. Spring; 8. Partition; 9. Connecting rod; 10. Elastic airbag; 11. Tube; 12. Elastic sleeve; 13. Elastic pad. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example
[0033] Please see Figures 1 to 4 An AC charging gun includes a housing 1, a charging head 2 provided on the housing 1, and a cable 14 for energizing the charging head 2 provided on the housing 1.
[0034] A mounting rod 3 is horizontally fixedly installed on the end face of the housing 1. A sliding groove is provided on the side wall of the mounting rod 3, and a locking block 4 is slidably installed in the sliding groove.
[0035] The bottom wall of the housing 1 is provided with an installation hole, and a circular installation plate 5 is rotatably installed in the installation hole. A plate buckle 6 is fixedly installed on the bottom wall of the installation plate 5. The housing 1 is provided with a linkage mechanism that enables the plate buckle 6 to be linked with the locking block 4. The housing 1 is also provided with an antifreeze mechanism that cooperates with the plate buckle 6.
[0036] In winter, the antifreeze mechanism prevents the mounting plate 5 from freezing to the housing 1. Therefore, when charging is required, the user first removes the housing 1 and presses the plate buckle 6 with their finger. At this time, the locking block 4 retracts into the slide groove under the action of the linkage mechanism.
[0037] Then insert the charging head 2 on the housing 1 into the vehicle's charging port, and then loosen the plate buckle 6. At this time, under the action of the linkage mechanism, the locking block 4 extends out from the slide groove and fits tightly against the side wall of the charging port, thereby fixing the housing 1, that is, fixing the charging head 2 to the vehicle's charging port, so that the charging gun can be used normally in winter.
[0038] like Figure 2As shown, the linkage mechanism includes a spring 7 fixedly installed between the locking block 4 and the top wall of the slide groove. Under the action of the spring 7, the locking block 4 is in a state of extending out of the slide groove. A partition 8 is vertically fixedly installed on the inner wall of the housing 1. An mounting plate 5 is located between the partition 8 and the mounting rod 3. A connecting rod 9 is fixedly installed on the top wall of the mounting plate 5. An elastic airbag 10 is installed between the connecting rod 9 and the partition 8. Because the elastic airbag 10 is elastic, when the plate buckle 6 is not under force, it can be kept in a vertical state. When the user presses the plate buckle 6, the plate buckle 6 drives the circular mounting plate 5 to rotate. Symmetrically distributed on the top and bottom walls of the circular mounting plate 5, the rotating mounting plate 5 drives the connecting rod 9 away from the elastic airbag 10. At this time, the connecting rod 9 pulls the elastic airbag 10, making the interior of the elastic airbag 10 negatively pressurized. The side wall of the elastic airbag 10 is provided with a conduit 11 extending into the groove and located in the space above the locking block 4. Under the action of the conduit 11, the elastic airbag 10 in the negative pressure state draws air from the groove through the conduit 11. At this time, the groove is also in a negative pressure state, so it can provide an attractive force to the locking block 4 through the negative pressure, causing the locking block 4 to retract into the groove. Therefore, it plays the role of making the locking block 4 move in conjunction with the plate buckle 6.
[0039] like Figure 1 As shown, the shell 1 is made of plastic containing propylene glycol and glycerin, which increases the antifreeze properties of the plastic.
[0040] like Figure 2 As shown, the antifreeze mechanism includes an elastic sleeve 12 fitted over the outside of the plate buckle 6. The bottom end of the elastic sleeve 12 is sealed, and the top end of the elastic sleeve 12 is open. The edge of the top end of the elastic sleeve 12 is fixedly connected to the outer wall of the housing 1, and the elastic sleeve 12 covers the outside of the mounting plate 5. Therefore, the elastic sleeve 12 can wrap the plate buckle 6 and the mounting plate 5, preventing rain and snow from directly contacting the mounting plate 5, and thus preventing ice from forming at the connection between the mounting plate 5 and the housing 1.
[0041] like Figure 2 As shown, both the elastic sleeve 12 and the elastic airbag 10 are made of nitrile rubber, which maintains elasticity at low temperatures, ensuring that the elastic airbag 10 and the elastic sleeve 12 can operate normally.
[0042] like Figure 3 , Figure 4 As shown, an elastic pad 13 is fixedly installed at the bottom of the card block 4. When the card block 4 extends out of the groove, the elastic pad 13 is squeezed and deformed, which increases the contact area between the elastic pad 13 and the car charging port, increases the friction, and thus improves the fixing effect of the charging gun.
[0043] like Figure 2As shown, the elastic sleeve 12 is fixedly sleeved on the outside of the buckle 6, and the outer wall of the elastic sleeve 12 is provided with anti-slip texture, which can increase the friction between the finger and the elastic sleeve 12 and ensure that the user can press the buckle 6 normally.
[0044] like Figure 2 As shown, the spring 7 is made of metal, thus ensuring that the spring 7 can remain elastic in winter.
[0045] like Figure 2 As shown, both the slide groove and the sidewall of the locking block 4 are mirrored. Since the surface of the mirror is smooth, it can reduce the friction between the slide groove and the locking block 4, ensuring that the sidewall of the locking block 4 can fit with the sidewall of the slide groove, thus ensuring that the locking block 4 can move normally.
[0046] like Figure 2 As shown, the elastic pad 13 is made of rubber material. Since rubber material has strong wear resistance, making the elastic pad 13 with rubber material can extend the service life of the elastic pad 13 and save costs.
[0047] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. An AC charging gun, comprising a housing (1) and a charging head (2) provided on the housing (1); Its features are: A mounting rod (3) is horizontally fixedly installed on the end face of the housing (1). A sliding groove is provided on the side wall of the mounting rod (3), and a locking block (4) is slidably installed in the sliding groove. The bottom wall of the housing (1) is provided with an installation hole, and a circular mounting plate (5) is rotatably installed in the installation hole. A plate buckle (6) is fixedly installed on the bottom wall of the mounting plate (5). The housing (1) is provided with a linkage mechanism that enables the plate buckle (6) to be linked with the locking block (4). The housing (1) is also provided with an antifreeze mechanism that cooperates with the plate buckle (6).
2. The alternating current charging gun of claim 1, wherein: The linkage mechanism includes a spring (7) fixedly installed between the card block (4) and the top wall of the slide groove. A partition (8) is vertically fixedly installed on the inner wall of the housing (1). A connecting rod (9) is fixedly installed on the top wall of the mounting plate (5). An elastic airbag (10) is installed between the connecting rod (9) and the partition (8). A conduit (11) extending into the slide groove is inserted into the side wall of the elastic airbag (10).
3. The alternating current charging gun of claim 2, wherein: The shell (1) is made of plastic containing propylene glycol and glycerin.
4. The alternating current charging gun of claim 3, wherein: The antifreeze mechanism includes an elastic sleeve (12) fitted outside the plate buckle (6), the bottom end of the elastic sleeve (12) is sealed, the top end of the elastic sleeve (12) is open, and the edge of the top end of the elastic sleeve (12) is fixedly connected to the outer wall of the housing (1), and the elastic sleeve (12) covers the outside of the mounting plate (5).
5. The alternating current charging gun of claim 4, wherein: Both the elastic sleeve (12) and the elastic airbag (10) are made of nitrile rubber.
6. The alternating current charging gun of claim 5, wherein: An elastic pad (13) is fixedly installed at the bottom of the card block (4).
7. The alternating current charging gun of claim 6, wherein: The elastic sleeve (12) is fixedly sleeved on the outside of the plate buckle (6), and the outer wall of the elastic sleeve (12) is provided with anti-slip texture.
8. The alternating current charging gun of claim 7, wherein: The spring (7) is made of metal.
9. The alternating current charging gun of claim 8, wherein: The sidewalls of the slide and the block (4) are both mirrored.
10. The alternating current charging gun of claim 9, wherein: The elastic pad (13) is made of rubber material.