A DC charging gun with self-locking function

Abstract

A DC charging gun with a self-locking function belongs to the technical field of DC charging guns. The present invention includes a charging gun head interface, an anti-slip slider, a charging gun body, a charging gun handle, a rotating mechanism and a locking buckle. The charging gun head interface is inserted into the charging gun body, and the interface end is exposed to the outside. The rotating mechanism is sleeved on the outside of the charging gun head interface and fixedly connected to the front end face of the charging gun body. The charging gun handle is installed on the rear side of the charging gun body, the anti-slip slider is installed on the rotating mechanism, and the locking buckle is installed on the charging socket. The anti-slip slider is clamped on the charging socket through the locking buckle. The research and development purpose of the present invention is to solve the problem that the existing charging gun uses a strong pressing lock method to lock the charging function, which makes each plug and unplug of the charging gun cumbersome and laborious, and cannot achieve automatic unlocking at low current. When the gun needs to be unplugged, it cannot be quickly pulled out, causing human and financial losses. It can realize the self-locking and unlocking of the charging gun, simplify the charging process, and improve efficiency.

Description

Technical Field

[0001] The present invention relates to a DC charging gun with a self-locking function, belonging to the technical field of DC charging guns. Background Art

[0002] Electric vehicles are becoming increasingly popular. The charging gun is a critical component connecting the charging station and the vehicle during charging. It is also a dangerous component that can be manipulated manually during the charging process. Most DC charging stations can reach a maximum line voltage of over 700V and a maximum current of over 120A during charging. If the charging gun is manually unplugged during this process, it could cause significant damage to both people and equipment. Therefore, the charging gun should have a charging lock function. Some existing charging guns have a locking function, but most use a forceful press-lock mechanism, making plugging and unplugging the charging gun cumbersome and laborious, inconvenient, and prone to damage to the charging port. Furthermore, the gun lacks automatic unlocking at low currents, making it difficult to quickly unplug the gun when needed in certain situations, resulting in personal and financial losses.

[0003] Therefore, it is urgent to propose a new type of DC charging gun with a self-locking function to solve the above technical problems. Summary of the Invention

[0004] The purpose of the research and development of the present invention is to solve the problem that the existing charging gun uses a strong press lock method to lock the charging function, which makes it cumbersome and laborious to plug and unplug the charging gun each time, inconvenient to use, and easily causes damage to the charging interface, and cannot achieve automatic unlocking of small currents. When the gun needs to be unplugged, it cannot be quickly unplugged, causing loss of life and property. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to determine the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0005] The technical solution of the present invention:

[0006] A DC charging gun with a self-locking function includes a charging gun head interface, an anti-slip slider, a charging gun body, a charging gun handle, a rotating mechanism and a locking buckle. The charging gun head interface is inserted into the charging gun body, and the interface end is exposed to the outside. The rotating mechanism is sleeved on the outside of the charging gun head interface and fixedly connected to the front end face of the charging gun body. The charging gun handle is installed on the rear side of the charging gun body, the anti-slip slider is installed on the rotating mechanism, and the locking buckle is installed on the charging socket. The anti-slip slider is clamped on the charging socket through the locking buckle.

[0007] In order to solve the problem that the self-locking mechanism can achieve self-locking and unlocking of the charging gun without manual pressing or external control, simplify the charging process and improve efficiency, the technical solution proposed in the present invention is as follows:

[0008] Preferably: the rotating mechanism includes a fixed shell, an arc-shaped slider, a permanent magnet, an adjustment seat, an adjustment knob, an adjustment screw and a tension spring, the arc-shaped slider establishes a rotational connection with the front side of the charging gun body through the fixed shell, a slide groove is provided on the top of the fixed shell, the anti-slip slider is slidably arranged in the slide groove, and the bottom of the anti-slip slider is fixedly connected to the arc-shaped slider, an adjustment seat is fixedly installed on the fixed shell, an adjustment knob is rotatably installed on the adjustment seat, the adjustment knob is threadedly matched with the adjustment screw, one end of the tension spring is connected to the end of the adjusting screw, and the other end of the tension spring is connected to one end of the arc-shaped slider, and a permanent magnet is installed on the arc-shaped slider.

[0009] Preferably, permanent magnets are installed on both the left and right sides of the arc-shaped slider.

[0010] Preferably, a stop cap is provided at the end of the adjusting screw not connected to the tension spring.

[0011] Preferably, the arc-shaped slider is an arc-shaped ring slider, and the inner side wall of the arc-shaped ring slider is in contact with the outer side wall of the charging gun head interface.

[0012] Preferably: the fixed shell includes an outer annular shell and a front baffle, the outer annular shell is installed on the front side of the charging gun body, the side wall of one end of the front baffle slides in contact with the outer wall of the charging gun head interface, and the side wall of the other end of the front baffle is fixedly connected to the outer annular shell.

[0013] Preferably, the charging gun head interface has a first charging cable and a second charging cable arranged symmetrically side by side.

[0014] The present invention has the following beneficial effects:

[0015] 1. The self-locking mechanism used in this invention can achieve self-locking and unlocking of the charging gun without manual pressing or external control, simplifying the charging process and improving efficiency;

[0016] 2. The self-locking current of the present invention is adjustable between 30A and 120A, compatible with various usage scenarios, improving flexibility and practicality;

[0017] 3. The present invention is very labor-saving and easy to use when plugging and unplugging the charging gun, and is not likely to cause damage to the charging interface. The overall structural design is ingenious and suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a DC charging gun with a self-locking function according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a DC charging gun with a self-locking function according to the present invention.

[0020] Figure 3 yes Figure 2 AA cross-section of

[0021] Figure 4 This is a diagram showing the use of an anti-dropout slider and a locking buckle of a DC charging gun with a self-locking function according to the present invention;

[0022] In the figure: 1-charging gun head interface, 2-anti-drop slider, 3-charging gun body, 4-charging gun grip, 5-rotating mechanism, 6-locking buckle, 7-first charging cable, 8-second charging cable, 51-fixed shell, 52-arc-shaped slider, 53-permanent magnet, 54-adjustment seat, 55-adjustment knob, 56-adjustment screw, 57-tension spring, 58-slide groove, 511-outer annular shell, 512-front baffle. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0024] The connections mentioned in the present invention are divided into fixed connections and detachable connections. The fixed connection refers to a non-detachable connection, including but not limited to conventional fixed connection methods such as hem connection, rivet connection, adhesive connection, and welding connection. The detachable connection refers to but not limited to conventional detachable connection methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can always be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a welded connection is selected for a fixed connection, and a hinge connection is selected for a detachable connection.

[0025] Specific implementation method 1: Combination Figures 1-4 Describe this embodiment. This embodiment is a DC charging gun with a self-locking function. The charging gun head interface 1 is inserted into the charging gun body 3, and the interface end is exposed to the outside. The rotating mechanism 5 is mounted on the outside of the charging gun head interface 1 and is fixedly connected to the front end face of the charging gun body 3. The charging gun handle 4 is installed on the rear side of the charging gun body 3, the rotating mechanism 5 is installed with an anti-slip slider 2, and the charging socket is installed with a locking buckle 6. The anti-slip slider 2 is clamped on the charging socket through the locking buckle 6. The charging gun head interface 1 has a first charging line 7 and a second charging line 8 arranged symmetrically side by side.

[0026] The rotating mechanism 5 includes a fixed shell 51, an arc-shaped slider 52, a permanent magnet 53, an adjustment seat 54, an adjustment knob 55, an adjustment screw 56 and a tension spring 57. The arc-shaped slider 52 is an arc-shaped ring slider. The inner side wall of the arc-shaped ring slider fits with the outer side wall of the charging gun head interface 1. The fixed shell 51 includes an outer ring shell 511 and a front baffle 512. The outer ring shell 511 is installed on the front side of the charging gun body 3. The side wall of one end of the front baffle 512 slides with the outer side wall of the charging gun head interface 1, and the side wall of the other end of the front baffle 512 is fixedly connected to the outer ring shell 511. The arc-shaped slider 52 is fixed to the outer side wall of the charging gun head interface 1 through the fixed shell 51. 1 establishes a rotational connection with the front side of the charging gun body 3, a slide groove 58 is opened on the top of the fixed shell 51, the anti-slip slider 2 is slidably set in the slide groove 58, and the bottom of the anti-slip slider 2 is fixedly connected to the arc-shaped slider 52, an adjustment seat 54 is fixedly installed on the fixed shell 51, and an adjustment knob 55 is rotatably installed on the adjustment seat 54. The adjustment knob 55 is threadedly matched with the adjustment screw 56, one end of the tension spring 57 is connected to the end of the adjustment screw 56, and the other end of the tension spring 57 is connected to one end of the arc-shaped slider 52. The end of the adjusting screw 56 not connected to the tension spring 57 is provided with a stop cap, and permanent magnets 53 are installed on both sides of the arc-shaped slider 52.

[0027] The anti-slip slider 2, the arc-shaped slider 52 and the permanent magnet 53 are an integrated slider movable device, which is mounted on the charging gun head interface 1 and can rotate around the charging gun head interface 1. The slide groove 58 opened on the top of the fixed shell 51 can further limit the rotation range of the integrated slider movable device by limiting the movable range of the anti-slip slider 2.

[0028] The permanent magnets 53 on the left and right sides of the arc-shaped slider 52 can form a stable magnetic field between them. When there is current in the first charging line 7 and the second charging line 8, according to the Ampere force formula, that is, F=BIL, the force on the first charging line 7 and the second charging line 8 can be obtained. Therefore, the permanent magnets 53 will rotate under the force, and the greater the current, the stronger the force. Figure 2 In this case, the permanent magnet 53 is subjected to a force to form a clockwise rotation trend, stretching the tension spring 57. According to Hooke's law, F=kx, the tension part of the tension spring 57 is large. When the elastic force of the tension spring 57 is equal to the Ampere force on the permanent magnet 53, the arc-shaped slider 52 is balanced again. At this time, the arc-shaped slider 52 drives the anti-slip slider 2 to rotate a certain distance, and it rotates to the device position of the buckle 6 of the charging socket, such as Figure 3 .

[0029] The adjustment seat 54 and the adjustment knob 55 that cooperate with the adjustment screw 56 play a limiting role. When the adjustment knob 55 is rotated, the adjustment screw 56 will move left and right due to the threaded cooperation, thereby adjusting the position of the tension spring 57, and then adjusting the initial tension of the tension spring 57. When the initial tension of the tension spring 57 is large, a larger current is required in the first charging line 7 and the second charging line 8 to make the arc-shaped slider 52 rotate. Therefore, the adjustment knob 55 is actually used to adjust the minimum current for the self-locking of the charging gun.

[0030] When the charging current reaches the set value (the set value is the minimum current for the charging gun to self-lock, as adjusted by the adjustment knob 55), the anti-dropout slider 2 rotates clockwise and moves behind the buckle 6. At this time, the blocking of the anti-dropout slider 2 and the buckle 6 prevents the charging gun body 3 from being removed, achieving a locking effect. When the charging current decreases, the anti-dropout slider 2 moves counterclockwise and disengages the buckle 6, allowing the charging gun body 3 to be removed normally.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0033] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0035] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0036] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will no longer describe the technical solutions after permutations and combinations one by one, but it should be understood that the technical solutions after permutations and combinations have been disclosed by the present invention.

[0037] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A DC charging gun with a self-locking function, characterized by: The charging gun comprises a charging gun head interface (1), an anti-slip slider (2), a charging gun body (3), a charging gun grip (4), a rotating mechanism (5) and a locking buckle (6); the charging gun head interface (1) is inserted into the charging gun body (3), and the interface end is exposed to the outside; the rotating mechanism (5) is sleeved on the outside of the charging gun head interface (1) and fixedly connected to the front end surface of the charging gun body (3); the charging gun grip (4) is installed on the rear side of the charging gun body (3); the anti-slip slider (2) is installed on the rotating mechanism (5); the locking buckle (6) is installed on the charging socket; the anti-slip slider (2) is clamped on the charging socket through the locking buckle (6); The rotating mechanism (5) includes a fixed housing (51), an arc-shaped slider (52), a permanent magnet (53), an adjustment seat (54), an adjustment knob (55), an adjustment screw (56) and a tension spring (57). The arc-shaped slider (52) is connected to the front side of the charging gun body (3) through the fixed housing (51). A slide groove (58) is provided on the top of the fixed housing (51). The anti-slip slider (2) is slidably arranged in the slide groove (58), and the bottom of the anti-slip slider (2) is connected to the arc-shaped slider (52). ) is fixedly connected, an adjustment seat (54) is fixedly installed on the fixed housing (51), an adjustment knob (55) is rotatably installed on the adjustment seat (54), the adjustment knob (55) is threadedly matched with the adjustment screw (56), one end of the tension spring (57) is connected to the end of the adjustment screw (56), the other end of the tension spring (57) is connected to one end of the arc-shaped slider (52), and a permanent magnet (53) is installed on the arc-shaped slider (52); permanent magnets (53) are installed on both sides of the arc-shaped slider (52); The arc-shaped slider (52) is an arc-shaped ring slider, and the inner side wall of the arc-shaped ring slider is in contact with the outer side wall of the charging gun head interface (1); the charging gun head interface (1) has a first charging line (7) and a second charging line (8) arranged symmetrically side by side.

2. The DC charging gun with a self-locking function according to claim 1, characterized in that: A stop cap is provided at one end of the adjusting screw (56) that is not connected to the tension spring (57).

3. The DC charging gun with a self-locking function according to claim 1, characterized in that: The fixed housing (51) comprises an outer annular housing (511) and a front baffle (512). The outer annular housing (511) is mounted on the front side of the charging gun body (3). One end side wall of the front baffle (512) is slidably fitted with the outer side wall of the charging gun head interface (1). The other end side wall of the front baffle (512) is fixedly connected to the outer annular housing (511).

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