Charging gun and charging equipment
By setting the micro switch close to the lock head in the charging gun and adjusting the distance with the adjusting parts and threaded connections, the error triggering problem caused by mechanical lock deformation is solved, and a more accurate determination of charging status and improvement of production efficiency is achieved.
Patent Information
- Application Number
- CN202421924852.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The mechanical lock of the charging gun is easily triggered by deformation during use, which affects the accuracy of the charging state judgment.
Set the first micro switch at the position where the mechanical lock is close to the lock head, and adjust the distance from the micro switch through the adjusting member to ensure that the mechanical lock accurately triggers or releases the micro switch at the preset position, and uses threaded connections and elastic members to overcome the deformation influence of the mechanical lock.
It improves the accuracy of the state judgment of the charging gun, reduces the possibility of false triggering and false release of micro switches, and improves production and use efficiency.
Smart Images
Figure CN223206562U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of energy technology, and in particular to a charging gun and a charging device. Background Art
[0002] When charging, the charging gun needs to be fixed to the charging socket through the mechanical lock on the charging gun, and whether the charging gun is firmly inserted needs to trigger the micro switch by the mechanical lock to provide feedback.
[0003] In the related art, a micro switch used to provide feedback on whether the mechanical lock is firmly fixed is set at the end of the mechanical lock. However, since the mechanical lock will deform during actual use and the trigger stroke of the micro switch is very short, it is easy to cause the micro switch to be triggered incorrectly, affecting the judgment of the charging gun status. Utility Model Content
[0004] The present application provides a charging gun and a charging device including the charging gun, which can reduce the possibility of the first micro switch being triggered by mistake and enable accurate feedback of the status of the charging gun.
[0005] To achieve the above objectives, this application adopts the following technical solutions:
[0006] In a first aspect of the present application, a charging gun is provided, comprising a gun head, a gun body, a mechanical lock and multiple terminals, the gun head being fixed at one end of the gun body, the multiple terminals including power terminals and signal terminals being fixed in the gun head, the gun body having a chamber, a portion of the mechanical lock being located in the chamber and being rotatably connected to the gun body, the mechanical lock extending along the distribution direction of the gun head and the gun body, the end of the mechanical lock in the extension direction that is closer to the gun head being the lock head, the lock head being located outside the gun body and being used to connect to the charging socket; the charging gun also comprises a first micro switch, the first micro switch being located in the chamber, and being closer to the lock head than the position where the mechanical lock is rotatably connected to the gun body, the first micro switch being used to trigger or release the first micro switch during rotation.
[0007] When the charging gun needs to be plugged into the charging socket of the device to be charged, the user will turn the mechanical lock (for example, by pressing it) and connect the lock head of the mechanical lock to the charging socket. After the charging gun is plugged into the charging socket, the signal terminal of the charging gun can contact the corresponding signal terminal on the charging socket and determine whether the connection is complete. When the mechanical lock rotates, the mechanical lock triggers the first microswitch, and when the mechanical lock triggers the first microswitch and then rotates in the opposite direction, the mechanical lock releases the first microswitch. In this way, by triggering and releasing the first microswitch, the first microswitch can feedback the movement signal of the mechanical lock. Because the first microswitch is set close to the gun head, when the mechanical lock rotates, the distance moved by the position of the mechanical lock used to trigger the first microswitch is closer to the distance moved by the lock head. Even if the mechanical lock is deformed, the first microswitch can more accurately feedback the movement of the lock head, reducing the possibility that the first microswitch is not accurately triggered or released, helping users, staff or charging equipment to more accurately judge the status of the charging gun.
[0008] In one embodiment of the present application, the charging gun also includes an adjusting member, which is installed on the mechanical lock. The adjusting member protrudes to the side of the mechanical lock facing the first microswitch. The adjusting member is used to adjust the distance between itself and the first microswitch. The mechanical lock triggers the first microswitch through the adjusting member.
[0009] When the mechanical lock that did not trigger the first microswitch rotates to the preset position (the position that should have triggered the first microswitch) and still cannot trigger the first microswitch, the distance between the adjustment member and the first microswitch can be changed so that the mechanical lock can trigger the first microswitch at the preset position. When the mechanical lock that triggered the first microswitch rotates to the preset position (the position that should have released the first microswitch) and cannot release the first microswitch, the position of the adjustment member can also be changed so that the mechanical lock can release the first microswitch at the preset position. In some cases, the operation of adjusting the position of the adjustment member can occur before the charging gun leaves the factory, so that the mechanical lock can accurately trigger or release the first microswitch at the preset position, thereby improving the pass rate of the production of charging guns and improving production efficiency.
[0010] In one embodiment of the present application, the charging gun also includes an adjusting part, and the mechanical lock has a threaded hole. Compared with the position where the mechanical lock is rotated to connect to the gun body, the threaded hole is closer to the lock head. The adjusting part is threadedly connected to the threaded hole. The adjusting part is used to adjust the distance between itself and the first microswitch by rotation. The mechanical lock triggers the first microswitch through the adjusting part.
[0011] The adjusting member is threadedly connected to the mechanical lock. By rotating, the adjusting member adjusts the distance between itself and the first microswitch, allowing the mechanical lock to trigger or release the first microswitch at a preset position. The threaded connection provides a self-locking function, making it easy to adjust the position of the adjusting member. This can overcome deformation or machining errors of the mechanical lock, improving the first pass rate of charging gun production.
[0012] In one embodiment of the present application, the threaded hole passes through the mechanical lock, a port at one end of the threaded hole faces the first micro switch, and a port at the other end of the threaded hole faces away from the first micro switch.
[0013] The threaded hole passes through the mechanical lock, allowing a worker or user to rotate the adjustment member on both sides of the mechanical lock, so that the worker or user can adjust the adjustment member more flexibly.
[0014] In one embodiment of the present application, the adjusting member is a screw, and the threaded hole includes a connected countersunk section and a screw hole section. The diameter of the countersunk section is larger than the diameter of the screw hole section. The countersunk section is located on the side of the screw hole section away from the first micro switch. The screw of the adjusting member is threadedly connected to the screw hole section, and the head of the adjusting member is located in the countersunk section.
[0015] Using a screw as the adjusting member is easy to obtain and convenient for the operator or user to rotate. Furthermore, the countersunk section accommodates the head of the adjusting member (the head of the screw), minimizing the protrusion of the adjusting member's head outside the mechanical lock, thereby reducing the impact of the adjusting member on the surrounding structure of the mechanical lock.
[0016] In one embodiment of the present application, a portion of the wall of the gun body that forms a chamber surrounds the mechanical lock, the threaded hole is located in the chamber, and one end of the gun body that fixes the gun head has an opening that is connected to the chamber, and the lock head extends out of the gun body through the opening.
[0017] When the threaded hole is a through hole, the threaded hole is set in the chamber and surrounded by the gun body. In this way, the adjusting part and the threaded hole are both protected in the gun body. When the charging gun is in use, the adjusting part will not be bumped or twisted by foreign objects. During the normal use of the charging gun, the possibility of changes in the distance between the adjusting part and the first micro switch is reduced, and the risk of the first micro switch being accidentally triggered or released is reduced.
[0018] In one embodiment of the present application, the end of the two ends of the mechanical lock in the extension direction that is farther from the gun head is a pressing portion, and the pressing portion is at least partially located outside the gun body and is used to provide a pressing position; in the extension direction of the mechanical lock, the distance between the position where the mechanical lock is rotated to connect to the gun body and the pressing portion is L1, and the distance between the position where the mechanical lock is rotated to connect to the gun body and the position where the mechanical lock is used to trigger the first micro switch is L2, 0.8≤L1 / L2≤1.2.
[0019] The position of the mechanical lock used to trigger the first microswitch and the pressing part of the mechanical lock are almost equal in size from the rotation position of the mechanical lock. That is, when the mechanical lock rotates, the distance moved by the pressing part is basically equal to the distance moved by the position of the mechanical lock used to trigger the first microswitch. The dimension chain is simple and the lever ratio is controlled at about 1:1, which facilitates the design and production of the mechanical lock size and improves the production efficiency of the charging gun.
[0020] In one embodiment of the present application, the charging gun further includes an elastic member, which connects the gun body and the mechanical lock, and the elastic member is used to drive the mechanical lock to trigger the first micro switch.
[0021] When the user does not apply external force to the mechanical lock to rotate it, the mechanical lock triggers the first microswitch under the action of the elastic member. In other words, the state of triggering the first microswitch can be understood as the normal state of the mechanical lock. When the user rotates the mechanical lock, the mechanical lock releases the first microswitch. By selecting the spring, the force with which the mechanical lock triggers the first microswitch can be controlled. For example, the pressure with which the mechanical lock presses down the first microswitch can be controlled by the spring. The process of the user applying force is the process of separating the mechanical lock from the first microswitch. The user usually does not directly press the mechanical lock to trigger the first microswitch, which reduces the possibility of the user directly pressing the first microswitch through the mechanical lock to damage the first microswitch.
[0022] In one embodiment of the present application, the lock portion is a lock hook, which is located on the side of the gun head and bent toward the gun head. The lock portion is used to hook the charging socket, and the first micro switch and the gun head are located on the same side of the mechanical lock.
[0023] Placing the first micro switch and the gun head on the same side of the mechanical lock saves space on the side of the mechanical lock away from the gun head. In addition, the lock head is bent toward the gun head and presses down toward the gun head when connected to the charging socket, allowing the lock head to be firmly hooked on the charging socket.
[0024] In one embodiment of the present application, the charging gun also includes an electronic lock and a second micro switch, both of which are located in the chamber. The electronic lock has an active state and a locked state. In the active state, the electronic lock allows the mechanical lock to rotate, and in the locked state, the electronic lock restricts the rotation of the mechanical lock; in one of the active state and the locked state, the electronic lock triggers the second micro switch, and in the other of the active state and the locked state, the electronic lock releases the second micro switch.
[0025] When the lock head is connected and fixed to the charging socket, the electronic lock is in the locked state. The electronic lock will restrict the rotation of the mechanical lock, ensuring that the lock head is firmly connected to the charging socket, reducing the possibility of the charging gun falling off the charging socket. When the charging gun needs to be unplugged, the electronic lock can cancel the restriction on the mechanical lock. At this time, the mechanical lock is in the active state, allowing the mechanical lock to rotate normally. Turning the mechanical lock can unlock the mechanical lock and the charging socket. In addition, the electronic lock triggers or releases a second microswitch in two states. For example, the electronic lock releases the second microswitch in the active state and triggers the second microswitch in the locked state. The second microswitch provides feedback on the status of the electronic lock, thereby determining whether the charging gun is firmly connected to the charging socket.
[0026] In a second aspect of the present application, a charging device is provided, including a power module and a charging gun, wherein the charging gun is electrically connected to the power module via a cable.
[0027] The power module is electrically connected to the charging gun via a cable. The power module can supply power to the charging gun, allowing the charging gun to charge the device to be charged. Furthermore, the charging device provided in this application includes the aforementioned charging gun. Therefore, the charging device provided in this application and the charging gun of the aforementioned technical solution can solve the same technical problems and have the same technical effects, and will not be further elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 A schematic diagram of the overall structure of a charging device provided in an embodiment of the present application;
[0029] Figure 2 A schematic diagram of the overall structure of another charging device provided in an embodiment of the present application;
[0030] Figure 3 A schematic diagram of the overall structure of a charging gun provided in an embodiment of the present application;
[0031] Figure 4 A schematic structural diagram of a chamber provided in an embodiment of the present application;
[0032] Figure 5 A schematic diagram of the internal structure of a charging gun provided in an embodiment of the present application;
[0033] Figure 6 A schematic structural diagram of an adjusting member provided in an embodiment of the present application;
[0034] Figure 7 A schematic structural diagram of a threaded hole provided in an embodiment of the present application;
[0035] Figure 8 A schematic structural diagram of another threaded hole provided in an embodiment of the present application;
[0036] Figure 9 A schematic structural diagram of a pressing portion provided in an embodiment of the present application;
[0037] Figure 10 A schematic diagram of the overall structure of another charging gun provided in an embodiment of the present application;
[0038] Figure 11 A schematic diagram of the dimensions of a mechanical lock provided in an embodiment of the present application;
[0039] Figure 12 A schematic diagram of the dimensions of another mechanical lock provided in an embodiment of the present application;
[0040] Figure 13 A schematic diagram of the structure of an electronic lock and a second micro switch provided in an embodiment of the present application;
[0041] Figure 14 A schematic diagram of the structure of an electronic lock provided in an embodiment of the present application;
[0042] Figure 15 A schematic diagram of the structure of another electronic lock provided in an embodiment of the present application.
[0043] Reference numerals:
[0044] 100-charging device; 110-power module; 120-housing; 130-charging gun; 140-cable; 150-charging host; 160-charging terminal;
[0045] 1-gun head; 2-gun body; 21-rotating shaft; 22-chamber; 23-opening; 24-through port; 3-terminal; 31-power terminal; 32-signal terminal; 4-mechanical lock; 41-locking head; 42-pressing part; 43-threaded hole; 431-countersunk section; 432-threaded hole section; 44-abutting column; 45-limiting part; 451-limiting hole; 5-first micro switch; 6-adjusting part; 61-screw; 62-head; 7-elastic part; 8-electronic lock; 81-driving part; 82-movable part; 9-second micro switch. DETAILED DESCRIPTION
[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.
[0047] In the present application, unless otherwise expressly specified and limited, the directions or positional relationships indicated by terms such as "upper", "lower", "front", and "back" may be defined, including but not limited to, the directions relative to the schematic placement of components in the accompanying drawings. These directional terms may be relative concepts, which are used for relative description and clarification, and may change accordingly according to changes in the placement of components in the accompanying drawings, and shall not be understood as limitations on the present application.
[0048] In this application, the terms "first," "second," etc., are used solely for descriptive purposes to distinguish one element from another and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.
[0049] In this application, unless otherwise clearly defined or specified, “multiple” means two or more.
[0050] Furthermore, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.
[0051] In the drawings of the embodiments of the present application, physical structures such as components and assemblies are represented by guide lines; hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with arrows.
[0052] The embodiment of the present application provides a charging device 100, Figure 1 The structure of a charging device 100 is shown as an example. Figure 1 The charging device 100 includes a power module 110, a housing 120, and a charging gun 130. The power module 110 is disposed within the housing 120 and is electrically connected to the charging gun 130 via a cable 140. The power module 110 can supply power to the charging gun 130, enabling the charging gun 130 to charge the device to be charged. In other embodiments, the charging device 100 may not include the housing 120, and the power module 110 may be disposed within another device. This application does not specifically limit the location of the power module 110.
[0053] Figure 2 The structure of another charging device 100 is shown as an example. Figure 2The charging device 100 includes a power module 110, a charging host 150, a charging terminal 160, and a charging gun 130. Multiple charging terminals 160 and charging guns 130 may be provided. The power module 110 is provided within the charging host 150. The power module 110 is electrically connected to multiple charging terminals 160 via corresponding cables 140. The charging terminals 160 are electrically connected to corresponding charging guns 130 via cables 140. Each charging terminal 160 may be equipped with (electrically connected via cables 140) one or more charging guns 130.
[0054] The exemplary charging gun 130 can be connected (e.g., plugged into) an electric device in an electric vehicle awaiting charging to charge the device. To accommodate the charging gun 130, the device to be charged can be provided with a charging socket (e.g., a charging inlet, a charging connector, a charging gun port, etc.). The charging socket cooperates with the charging gun 130 to facilitate connection (e.g., plugging) between the charging gun 130 and the device to be charged.
[0055] The present application embodiment also provides a charging gun 130, referring to Figure 3 , Figure 3 The overall structure of a charging gun 130 is shown as an example. The charging gun 130 in the example may be a DC charging gun. In other examples, the charging gun 130 may also be an AC charging gun.
[0056] Reference Figure 3 The charging gun 130 includes a gun head 1, a gun body 2 and multiple terminals 3. The gun head 1 is fixed (for example, by bolts) at one end of the gun body 2. The shape of the gun body 2 can be any suitable shape. In order to facilitate the user to hold it, the gun body 2 can also be provided with a structure for the user to hold, such as a handle, a grip rod, a grip, etc.
[0057] Multiple terminals 3 are fixed in the gun head 1, wherein the multiple terminals 3 include a signal terminal 32 and a power terminal 31. The power terminal 31 can be used to connect with the power socket on the electric device to charge the electric device. The signal terminal 32 is a terminal that can realize a specific function, and there can be multiple signal terminals 32. For example, the signal terminal 32 can be a terminal for detecting the connection status between the charging gun 130 and the electric device, or a terminal 3 for communicating with the charging pile.
[0058] To securely connect the charging gun 130 to the charging socket when the charging gun 130 is plugged into the charging socket, the charging gun 130 further includes a mechanical lock 4, which is rotatably connected to the gun body 2, e.g., hingedly connected. The mechanical lock 4 extends along the direction of distribution between the gun head 1 and the gun body 2. Of the two ends of the mechanical lock 4 along the extension direction, the end closer to the gun head 1 is a lock portion 41. The lock portion 41 is located outside the gun body 2 and is used to connect to the charging socket. For example, after the charging gun 130 is plugged into the charging socket, the lock portion 41 can be connected (e.g., hooked, snapped, etc.) to the charging socket.
[0059] The structure of the lock head 41 can be any suitable structure, for example, Figure 3 The lock portion 41 is a lock hook, which is located on the side of the gun head 1 and bent toward the gun head 1. The lock portion 41 is used to hook the charging socket. It can be understood that in this example, the charging socket has a lock hole for the lock portion 41 to hook.
[0060] The gun body 2 has a chamber 22. Figure 4 The structure of a chamber 22 is shown as an example. The chamber 22 passes through one side of the gun body 2. For example, the side of the gun body 2 passed through by the chamber 22 may be the top side when the charging gun 130 is plugged into the charging socket. Figure 5 The internal structure of the charging gun 130 is shown as an example. Figure 5 The mechanical lock 4 can be partially located in the chamber 22 and partially located outside the chamber 22 (or outside the gun body 2). For example, the state when the charging gun 130 is plugged into the charging socket (for example, Figure 5 In the state in the middle, the bottom of the mechanical lock 4 is located in the chamber 22, and the top of the mechanical lock 4 protrudes out of the chamber 22.
[0061] And, in some examples, reference Figure 5 The mechanical lock 4 is rotatably connected to the gun body 2 via a rotating shaft 21 , and the rotating shaft 21 can also be disposed in the chamber 22 .
[0062] In addition, some other components of the charging gun 130 may also be arranged in the chamber 22. For example, the charging gun 130 may also include an elastic member 7. The elastic member 7 is located in the chamber 22 and connects the gun body 2 and the mechanical lock 4. The elastic member 7 is used to provide a force for the mechanical lock 4 so that the mechanical lock 4 remains in the initial state or resets to the initial state in the absence of other external forces. For example, referring to Figure 5The elastic member 7 is arranged on the side away from the lock head portion 41 at the position where the mechanical lock 4 is rotated to connect to the gun body 2 (the position indicated by the arrow S1), that is, the elastic member 7 is farther away from the lock head portion 41 than the position S1. In this example, the elastic member 7 can be a compression spring. Under the action of the elastic force of the elastic member 7, the lock head portion 41 of the mechanical lock 4 has a tendency to move toward the gun head 1. When the charging gun 130 needs to be connected to the charging socket, the end of the mechanical lock 4 (the end away from the lock head 41) can be pressed down, and the lock head 41 will be tilted up. The tilted lock head 41 can cross the step on the charging socket (for example, the lock head 41 is a hook, and the lock head 41 is hooked in front of the lock port of the charging socket. It is necessary to first cross the step in front of the lock port. After hooking on the lock port, the lock head 41 abuts against the above-mentioned step to prevent the charging gun 130 from detaching from the charging socket). When the mechanical lock 4 is released, the elastic member 7 drives the mechanical lock 4 to rotate, so that the lock head 41 is hooked on the lock port of the charging socket, thereby realizing the connection between the mechanical lock 4 and the charging socket.
[0063] The rotation connection position of the mechanical lock 4 and the gun body 2 (or the position where the mechanical lock 4 is rotationally connected to the gun body 2) is, for example, Figure 5 The position indicated by the arrow S1 is the position of the rotational connection structure between the mechanical lock 4 and the gun body 2. In the example where the rotation axis 21 is provided as the rotational connection structure to rotationally connect the mechanical lock 4 to the gun body 2, the position where the mechanical lock 4 is rotationally connected to the gun body 2 is the position of the rotation axis 21.
[0064] In other examples, the elastic member 7 may be disposed between the rotational connection position between the mechanical lock 4 and the gun body 2 (e.g., where the rotation axis 21 is located) and the lock head 41. In such an example, the elastic member 7 may be a tension spring. In still other examples, the elastic member 7 may be a torsion spring, and the elastic member 7 may be disposed at the rotational connection position between the mechanical lock 4 and the gun body 2. For example, in an example where the rotation axis 21 is provided, the elastic member 7 is sleeved outside the rotation axis 21 and drives the mechanical lock 4 to rotate.
[0065] When the charging gun 130 needs to be plugged into the charging socket of the device to be charged, the user rotates the mechanical lock 4 (for example, by pressing it) so that the lock head 41 of the mechanical lock 4 is aligned with the corresponding position of the charging socket. The user then releases the mechanical lock 4 and connects the lock head 41 of the mechanical lock 4 to the charging socket. For example, under the action of the elastic member 7, the mechanical lock 4 is reset and connected to the charging socket (for example, by hooking). When the charging gun 130 is plugged into the charging socket, the signal terminal 32 of the charging gun 130 can contact the corresponding terminal (or terminal socket) on the charging socket, and the signal terminal 32 is used to determine whether the charging gun 130 is plugged into the charging socket.
[0066] Reference Figure 5The charging gun 130 also includes a first micro switch 5 (wherein the micro switch can also be called a sensitive switch) for feedback signals. The first micro switch 5 is located in the chamber 22 and is fixedly connected to the gun body 2. Compared with the rotational connection position between the mechanical lock 4 and the gun body 2 (the position indicated by the arrow S1), the first micro switch 5 is closer to the lock head 41, that is, the first micro switch 5 is located between the S1 position and the lock head 41.
[0067] The mechanical lock 4 is used to trigger or release the first micro switch 5 during the rotation process, wherein triggering the first micro switch 5 refers to a state in which the first micro switch 5 can feedback a triggered signal, and releasing the first micro switch 5 refers to a state in which the first micro switch 5 is not triggered. For example, in some examples, referring to Figure 5 The first microswitch 5 and the gun head 1 are located on the same side of the mechanical lock 4. That is, the first microswitch 5 is located on the side of the mechanical lock 4 facing the gun head 1, which saves space on the side of the mechanical lock 4 facing away from the gun head 1. When the lock head 41 rotates a certain distance toward the gun head 1 (for example, when the lock head 41 rotates downward when the charging gun 130 is in use), the mechanical lock 4 triggers the first microswitch 5. When the mechanical lock 4 rotates a certain distance in the opposite direction after triggering the first microswitch 5 (for example, when the lock head 41 rotates upward when the charging gun 130 is in use), the mechanical lock 4 releases the first microswitch 5. In this way, by triggering and releasing the first microswitch 5 by the mechanical lock 4, the movement signal of the mechanical lock 4 can be fed back through the first microswitch 5.
[0068] For another example, the first microswitch 5 and the gun head 1 are located on different sides of the mechanical lock 4, that is, the first microswitch 5 is located on the side of the mechanical lock 4 away from the gun head 1. When the lock head 41 rotates away from the gun head 1 (for example, the lock head 41 rotates upward when the charging gun 130 is in use), the mechanical lock 4 triggers the first microswitch 5. When the mechanical lock 4 rotates in the opposite direction after triggering the first microswitch 5 (for example, the lock head 41 rotates downward when the charging gun 130 is in use), the mechanical lock 4 releases the first microswitch 5. In this way, the first microswitch 5 can also feedback the movement signal of the mechanical lock 4.
[0069] In the related art, the first microswitch 5 is set at the end of the mechanical lock 4 (the end away from the lock head 41). The situation desired in the design of the related art is that under normal circumstances (for example, when the user does not turn the mechanical lock 4 by pressing down), the mechanical lock 4 will not trigger the first microswitch 5. After pressing down the end of the mechanical lock 4, the mechanical lock 4 rotates, and the first microswitch 5 will be triggered by the mechanical lock 4. In this way, when the mechanical lock 4 is connected to the charging socket but is not firmly connected, the lock head 41 of the mechanical lock 4 will rise to an end distance. At this time, the mechanical lock 4 will trigger the first microswitch 5 to remind the user that the mechanical lock 4 is not firmly connected.
[0070] However, with long-term use or under the influence of the external environment, the mechanical lock 4 will deform. In related technologies, since the first micro-switch 5 is far away from the lock head 41, the deformation of the mechanical lock 4 is more significant. This can result in the lock head 41 of the mechanical lock 4 lifting a certain distance when the mechanical lock 4 is not yet fully connected to the charging socket. However, due to the deformation, the mechanical lock 4 still cannot trigger the first micro-switch 5, and thus cannot remind the user that the mechanical lock 4 is not securely connected, affecting the feedback of the first micro-switch 5 on the status. There is also a situation where the mechanical lock 4 is securely connected, but because the lock head 41 is still slightly lifted after being normally connected to the charging socket, the mechanical lock 4 still triggers the first micro-switch 5 due to the deformation of the mechanical lock 4, resulting in a false triggering, and it is always judged that the charging gun 130 is not securely plugged in, resulting in charging failure.
[0071] However, with the technical solution of the present application, since the first micro switch 5 is arranged close to the gun head 1, even if the mechanical lock 4 is deformed, when the mechanical lock 4 rotates, the position of the mechanical lock 4 for triggering the first micro switch 5 ( Figure 5 The distance moved by the first microswitch 5 (the position indicated by the arrow S2 in the middle) is closer to the distance moved by the lock part 41. The first microswitch 5 can more accurately feedback the movement of the lock part 41, reducing the possibility of the first microswitch 5 being triggered or released by mistake, and assisting users, staff or charging equipment 100 to more accurately judge the status of the charging gun 130.
[0072] For example, in Figure 5 In the example shown, when the charging gun 130 is plugged into the charging socket, the signal terminal 32 on the charging gun 130 contacts the corresponding terminal on the charging socket. At this time, the signal terminal 32 can determine that the plugging is complete. If the first microswitch 5 is triggered by the mechanical lock 4, it will be fed back that the lock head 41 of the mechanical lock 4 is connected to the charging socket. In this way, it can be determined that the charging gun 130 and the charging socket are firmly connected, and subsequent charging can be carried out.
[0073] In addition, in some examples, the charging gun 130 further includes an adjustment member 6. Figure 6 The structure of an adjusting member 6 is shown as an example. Figure 5 and Figure 6The mechanical lock 4 has a threaded hole 43. Compared to the rotational connection point between the mechanical lock 4 and the gun body 2 (e.g., the position of the rotation axis 21), the threaded hole 43 is closer to the lock head 41. That is, the threaded hole 43 is located between the position where the mechanical lock 4 is rotationally connected to the gun body 2 (position S1) and the lock head 41. One end of the threaded hole 43 is disposed toward the first microswitch 5. The adjustment member 6 is threadedly connected to the threaded hole 43 and extends to the side of the mechanical lock 4 facing the first microswitch 5. The adjustment member 6 adjusts the distance between itself and the first microswitch 5 by rotating. The mechanical lock 4 triggers the first microswitch 5 through the adjustment member 6 (that is, the mechanical lock 4 indirectly triggers the first microswitch 5). The threaded connection has a self-locking function, making it easy to adjust the position of the adjustment member 6.
[0074] When the mechanical lock 4 that has not triggered the first microswitch 5 rotates to a preset position (the position that should have triggered the first microswitch 5), and still cannot trigger the first microswitch 5, the adjusting member 6 can be rotated. Since the adjusting member 6 can adjust the distance between itself and the first microswitch 5 by rotating, rotating the adjusting member 6 can adjust the position of the adjusting member 6 so that the mechanical lock 4 can trigger the first microswitch 5 at the preset position. Similarly, when the mechanical lock 4 that has triggered the first microswitch 5 rotates to a preset position (for example, after the lock head 41 has been lifted a certain distance), and still cannot release the first microswitch 5, the adjusting member 6 can be rotated to adjust the position of the adjusting member 6 so that the mechanical lock 4 can release the first microswitch 5 at the preset position.
[0075] In some cases, adjusting the position of the adjustment member 6 can be performed before the charging gun 130 leaves the factory, allowing the mechanical lock 4 to accurately trigger or release the first microswitch 5, thereby improving the first pass rate and production efficiency of the charging gun 130. In some cases, rotating the adjustment member 6 can also be performed after the charging gun 130 leaves the factory. For example, when repairing the charging gun 130 after it has been put into use, maintenance personnel or users can further overcome deformation of the mechanical lock 4 during use by rotating the adjustment member 6, eliminating the need to replace the mechanical lock 4 and reducing the maintenance cost of the charging gun 130.
[0076] In some examples, the threaded hole 43 is a blind hole, that is, the threaded hole 43 only passes through the mechanical lock 4 at the end facing the first microswitch 5, and the threaded hole 43 does not penetrate the mechanical lock 4. In this example, the adjustment member 6 can be a stud or a screw. When the adjustment member 6 is a screw, the head of the adjustment member 6 (the head of the screw) is located on the side of the mechanical lock 4 facing the first microswitch 5, and the head of the adjustment member 6 is used to trigger the first microswitch 5.
[0077] In another example, the threaded hole 43 is a through hole that passes through the mechanical lock 4, with one end of the threaded hole 43 facing the first microswitch 5 and the other end of the threaded hole 43 facing away from the first microswitch 5. In other words, the threaded hole 43 passes through both sides of the mechanical lock 4 (for example, the upper and lower sides of the mechanical lock 4 when the charging gun 130 is in use). In the example where the threaded hole 43 passes through the mechanical lock 4, the operator or user can rotate the adjustment member 6 on both sides of the mechanical lock 4, providing the operator or user with more flexibility in adjusting the adjustment member 6.
[0078] When the threaded hole 43 passes through the mechanical lock 4, Figure 7 The structure of a threaded hole 43 is shown as an example. The threaded hole 43 includes a connected countersunk section 431 and a screw hole section 432. The diameter of the countersunk section 431 is larger than the diameter of the screw hole section 432. The countersunk section 431 is located on the side of the screw hole section 432 facing away from the first micro switch 5. The diameter of the countersunk section 431 refers to the diameter of the end of the countersunk section 431, that is, the diameter of the end of the countersunk section 431 facing away from the threaded hole 43, or the diameter of the hole formed by the countersunk section 431 on the surface of the mechanical lock 4. The diameter of the threaded hole 43 refers to the major diameter of the thread, or the nominal diameter of the internal thread. Figure 8 Another structure of the threaded hole 43 is shown as an example. Figure 8 The countersunk hole section 431 is a frustum-shaped hole, and the diameter of the end of the countersunk hole section 431 is also larger than the diameter of the threaded hole 43 .
[0079] In the example where the threaded hole 43 includes a countersunk section 431 and a screw hole section 432, the adjusting member 6 may be a screw. Figure 7 and Figure 8 The adjusting member 6 includes a screw 61 (the screw portion of the screw) and a head 62 (the head of the screw). The screw 61 of the adjusting member 6 is threadedly connected to the screw hole section 432, and the head 62 of the adjusting member 6 is located in the countersunk section 431. Using a screw as the adjusting member 6 makes the material readily available and convenient for the staff or user to rotate the adjusting member 6. In addition, the countersunk section 431 accommodates the head 62 of the adjusting member 6, so that the head 62 of the adjusting member 6 protrudes less outside the mechanical lock 4, reducing the impact of the adjusting member 6 on the structure around the mechanical lock 4.
[0080] In other examples, the adjustment member 6 may be a pin, and the mechanical lock 4 has a pin hole. The pin hole is closer to the lock head 41 than the position where the mechanical lock 4 is rotatably connected to the gun body 2. The adjustment member 6 is inserted into the pin hole, and one end of the adjustment member 6 extends to the side of the mechanical lock 4 facing the first microswitch 5. In this example, the adjustment member 6 has an interference fit with the pin hole, and the adjustment member 6 can be displaced by striking, pressing, twisting, or hammering the adjustment member 6, thereby changing the distance between the adjustment member 6 and the first microswitch 5.
[0081] When the mechanical lock 4 indirectly triggers the first micro switch 5 through an intermediate structure (e.g., the adjusting member 6), the position of the mechanical lock 4 used to trigger the first micro switch 5 refers to the connection position between the mechanical lock 4 and the intermediate structure, or the contact position between the mechanical lock 4 and the intermediate structure. Figure 7 and Figure 8 In the example where the mechanical lock 4 is provided with an adjustment member 6, the position of the mechanical lock 4 used to trigger the first microswitch 5 (the position indicated by the arrow S2) refers to the position on the mechanical lock 4 where the adjustment member 6 is threadedly connected, for example, the position of the threaded hole 43 on the mechanical lock 4. For another example, when there is an intermediate structure between the mechanical lock 4 and the first microswitch 5 (the intermediate structure is not provided on the mechanical lock 4), in the process of triggering the first microswitch 5, the mechanical lock 4 needs to first abut the intermediate structure, and then trigger the first microswitch 5 through the intermediate structure. In this example, the position of the mechanical lock 4 used to trigger the first microswitch 5 refers to the position where the mechanical lock 4 abuts the intermediate structure.
[0082] In other examples, the charging gun 130 may not include the adjustment member 6, and the mechanical lock 4 may directly trigger the first microswitch 5 by contacting and applying pressure. Furthermore, in some other examples, the location where the mechanical lock 4 directly contacts the first microswitch 5 may form a raised structure, a columnar structure, or a short shaft. In other examples, the location where the mechanical lock 4 directly contacts the first microswitch 5 may also be located on the plane of the mechanical lock 4 facing the first microswitch 5, without a noticeable raised structure at this location. In other words, a contact surface on the plane of the mechanical lock 4 facing the first microswitch 5 is used to trigger the first microswitch 5.
[0083] In order to facilitate the control of the rotation of the mechanical lock 4, the end of the mechanical lock 4 in the extension direction that is farther from the gun head 1 is a pressing portion 42. The pressing portion 42 is at least partially located outside the gun body 2, and the pressing portion 42 is used to provide a pressing position for the user. Figure 9 An exemplary structure of a pressing portion 42 is shown. The pressing portion 42 is an inwardly recessed groove, forming an area for a human hand to press. In this example, the side of the mechanical lock 4 facing away from the gun body 2 is exposed to the outside of the gun body 2. For example, during use, the top of the mechanical lock 4 is located outside the gun body 2 and the bottom is located inside the chamber 22. The wall of the gun body 2 that forms the chamber 22 does not surround the mechanical lock 4. In the case where the threaded hole 43 is a through hole and passes through the mechanical lock 4, one end of the threaded hole 43 is exposed to the outside of the gun body 2. Alternatively, to prevent the threaded hole 43 from being exposed to the outside, the threaded hole 43 can be configured as a blind hole.
[0084] Figure 10Another exemplary structure for a pressing portion 42 is shown. This pressing portion 42 protrudes outward, forming a boss for the user to press. In this example, the gun body 2 partially encloses the chamber 22, surrounding the mechanical lock 4. The end of the gun body 2 that holds the gun head 1 has an opening 23 that communicates with the chamber 22. The locking portion 41 of the mechanical lock 4 extends out of the gun body 2 through the opening 23. Furthermore, the gun body 2 is provided with a through-hole 24, through which the boss portion of the pressing portion 42 extends out of the gun body 2. When the threaded hole 43 is provided, the threaded hole 43 is located in the chamber 22. When the threaded hole 43 is a through hole, the threaded hole 43 is surrounded by the inner wall surface of the gun body 2. In this way, the adjusting member 6 and the threaded hole 43 are both protected in the gun body 2. When the charging gun 130 is in use, the adjusting member 6 will not be bumped or twisted by foreign objects, so that the distance between the adjusting member 6 and the first micro switch 5 will not change when the charging gun 130 is in normal use, thereby reducing the risk of the first micro switch 5 being accidentally triggered or released.
[0085] The lock portion 41 and the pressing portion 42 are located at different ends of the mechanical lock 4 in the direction of extension. The lock portion 41 and the pressing portion 42 are structures located at different ends of the mechanical lock 4, rather than a single point or surface at the end of the mechanical lock 4. For example, the lock portion 41 includes the portion of the mechanical lock 4 that forms the lock hook, and the pressing portion 42 includes the portion of the mechanical lock 4 that is formed for manual pressing (such as a groove or a boss).
[0086] In some examples, in the extension direction of the mechanical lock 4, the distance between the position where the mechanical lock 4 is rotated to connect to the gun body 2 and the pressing portion 42 is L1, and the distance between the position where the mechanical lock 4 is rotated to connect to the gun body 2 and the position where the mechanical lock 4 is used to trigger the first micro switch 5 is L2, 0.8≤L1 / L2≤1.2, for example, L1 / L2 can be 0.8, for another example, L1 / L2 can also be 1, and for another example, L1 / L2 can also be 1.2.
[0087] The position where the mechanical lock 4 is rotationally connected to the gun body 2 is the position of the rotational connection structure between the mechanical lock 4 and the gun body 2. For example, in an example where the mechanical lock 4 is rotationally connected to the gun body 2 via a rotation axis 21, the position where the mechanical lock 4 is rotationally connected to the gun body 2 is the position where the rotation axis 21 is located. For another example, in an example where the mechanical lock 4 is hinged to the gun body 2, the position where the mechanical lock 4 is rotationally connected to the gun body 2 is the position where the hinge axis is located.
[0088] The position of the pressing portion 42 is the position of the area of the mechanical lock 4 for the user to press. The position of the pressing portion 42 can be determined by common sense, for example, Figure 9 The groove position in the example (the pressing portion 42 is a groove), or Figure 10 The boss position in the example (the pressing portion 42 is a boss).
[0089] The position at which the mechanical lock 4 is used to trigger the first microswitch 5 can be in various situations. For example, in an example where the mechanical lock 4 triggers the first microswitch 5 by directly contacting the first microswitch 5, the position at which the mechanical lock 4 contacts the first microswitch 5 when the first microswitch 5 is triggered is the position at which the mechanical lock 4 triggers the first microswitch 5. For another example, in an example where the mechanical lock 4 triggers the first microswitch 5 via an intermediate structure (e.g., via the adjusting member 6), the position at which the mechanical lock 4 connects to the intermediate structure is the position at which the mechanical lock 4 triggers the first microswitch 5, such as the position of the threaded hole 43.
[0090] When measuring L1 and L2, you can specifically refer to the dimensions on the dimensional chain in the production drawing of the mechanical lock 4. If there is no drawing dimension support, you can also determine it in the following way. First, determine the extension direction of the mechanical lock 4. The extension direction of the mechanical lock 4 is the distribution direction of the two ends of the mechanical lock 4. It can be understood that the extension direction of the mechanical lock 4 is perpendicular to the rotation axis of the mechanical lock 4 relative to the gun body 2. In the example where the rotation axis 21 is provided, the extension direction of the mechanical lock 4 is perpendicular to the axis of the rotation axis 21.
[0091] Figure 11 The size of a mechanical lock 4 is shown as an example. The mechanical lock 4 in this example can be Figure 9 Mechanical lock 4 in the example; Figure 12 The size of another mechanical lock 4 is shown as an example. The mechanical lock 4 in this example can be Figure 10 Mechanical lock 4 in the example. Figure 11 and Figure 12 The extending direction of the mechanical lock 4 is marked by a double arrow. It should be noted that when measuring the dimensions of L1 and L2, the middle of the position or component is used as a reference.
[0092] The value of L1 / L2 is set between 0.8 and 1.2, that is, the position of the mechanical lock 4 used to trigger the first microswitch 5 (for example, the S2 position) and the pressing portion 42, and the sizes of both from the rotation connection position of the mechanical lock 4 (for example, the S1 position) are close to equal, that is, L1:L2 is close to 1:1. When the mechanical lock 4 rotates, the distance moved by the pressing portion 42 is basically equal to (equal to or with some error) the distance moved by the position of the mechanical lock 4 used to trigger the first microswitch 5 (for example, the S2 position). The size chain is simple, and the lever ratio of the mechanical lock 4 is controlled at about 1:1, which facilitates the design and production of the size of the mechanical lock 4 and improves the production efficiency of the charging gun 130.
[0093] In some examples, the charging gun 130 further includes an electronic lock 8 and a second micro switch 9 for feedback signal. Figure 13 The structure of an electronic lock 8 and a second micro switch 9 is shown as an example. Figure 13 And auxiliary reference Figure 5 The electronic lock 8 and the second micro switch 9 are both located in the chamber 22. The electronic lock 8 includes a driving member 81 and a movable member 82. The driving member 81 is used to drive the movable member 82 to move. The electronic lock 8 has an active state and a locked state. In the active state, the electronic lock 8 allows the mechanical lock 4 to rotate. That is, under the drive of the driving member 81, the movable member 82 does not hinder the rotation of the mechanical lock 4. In the locked state, the electronic lock 8 restricts the rotation of the mechanical lock 4. That is, under the drive of the driving member 81, the movable member 82 restricts the rotation of the mechanical lock 4.
[0094] Figure 14 The structure of an electronic lock 8 is shown as an example. The electronic lock 8 can be Figure 13 The movable part 82 in the Figure 14 understood as Figure 13 A partial view of the electronic lock 8 and the mechanical lock 4 (most of the structures of the electronic lock 8 and the mechanical lock 4 are hidden), and Figure 14 yes Figure 13 The corresponding part is viewed from the end of the mechanical lock 4 along the extension direction of the mechanical lock 4. In this example, refer to Figure 13 and Figure 14 The mechanical lock 4 has an abutment column 44 protruding toward the movable member 82, the driving member 81 is a motor, the movable member 82 is a cam or a local protruding structure similar to the cam principle, and the movable member 82 rotates under the drive of the driving member 81, for example, Figure 14 The (A) view state in the Figure 14 (B) View state in . Figure 14 The view (A) in FIG. 8 shows the movable member 82 in an active state. In the active state, there is a space between the movable member 82 and the abutting column 44 for the mechanical lock 4 to rotate. Figure 14 FIG. 8B shows the movable member 82 in the locked state. In the locked state, the movable member 82 is used to abut and stop the abutting column 44 to limit the rotation of the mechanical lock 4 .
[0095] Figure 15 The structure of another electronic lock 8 is shown as an example. In this example, the mechanical lock 4 has a limit member 45 protruding toward one side of the electronic lock 8, and a limit hole 451 is provided on the limit member 45 (the dotted line on the limit member 45 indicates the limit hole 451). In addition, the electronic lock 8 is an electromagnetic lock, the driving member 81 is an electromagnetic driving structure, and the movable member 82 is an axis structure (the dotted line in the driving member 81 indicates the part of the movable member 82 in the driving member 81). The movable member 82 slides under the drive of the driving member 81, for example, from Figure 15 (A) in the view state slide to Figure 15 (B) View state in . Figure 15View (A) in FIG. 4 shows the movable member 82 in an active state. In the active state, the movable member 82 does not extend into the limiting hole 451 , and the mechanical lock 4 can rotate. Figure 15 View (B) in FIG. 8 shows the movable member 82 in the locked state. In the locked state, the movable member 82 extends into the limiting hole 451 to limit the rotation of the mechanical lock 4 .
[0096] In the example of an electronic lock 8 and a second microswitch 9, when the lock head 41 is connected and secured to the charging socket, the electronic lock 8 is locked. This restricts the rotation of the mechanical lock 4, keeping the lock head 41 firmly attached to the charging socket and reducing the possibility of the charging gun 130 falling off the charging socket. When the charging gun 130 needs to be removed from the charging socket, the electronic lock 8 can remove the restriction on the mechanical lock 4. At this point, the mechanical lock 4 is activated, allowing it to rotate normally. Rotating the mechanical lock 4 unlocks the mechanical lock 4 from the charging socket.
[0097] The second microswitch 9 is provided on one side of the electronic lock 8. For example, the second microswitch 9 is provided on the side of the movable member 82. In one of the active state and the locked state, the electronic lock 8 triggers the second microswitch 9. In the other of the active state and the locked state, the electronic lock 8 releases the second microswitch 9. The triggering and releasing of the second microswitch 9 by the electronic lock 8 can be achieved by the movement (rotation, sliding, etc.) of the movable member 82. Triggering the second microswitch 9 means that the second microswitch 9 can feedback a triggered signal, and releasing the second microswitch 9 means that the second microswitch 9 is not triggered.
[0098] For example, refer to Figure 13 and Figure 14 In the locked state, the movable member 82 of the electronic lock 8 triggers the second micro switch 9, and in the active state, the movable member 82 of the electronic lock 8 releases the second micro switch 9. For another example, referring to Figure 15 In the locked state, the movable part 82 of the electronic lock 8 releases the second microswitch 9. In the active state, the movable part 82 of the electronic lock 8 triggers the second microswitch 9. The electronic lock 8 triggers and releases the second microswitch 9 in the two states respectively, making it easier for the user to determine whether the charging gun 130 is firmly connected to the charging socket. This application decouples the first microswitch 5 and the second microswitch 9 and triggers them respectively by the mechanical lock 4 and the electronic lock 8. The decoupling is clear, the structure and dimension chain are simpler, and the charging gun 130's insertion, removal, locking, and unlocking signals are accurately fed back, avoiding the first microswitch 5 and the second microswitch 9 from being triggered or released inadvertently.
[0099] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
Claims
1. A charging gun, characterized in that: The gun comprises a gun head, a gun body, a mechanical lock, and a plurality of terminals, wherein the gun head is fixed at one end of the gun body, the plurality of terminals include power terminals and signal terminals and are all fixed in the gun head, the gun body has a chamber, a portion of the mechanical lock is located in the chamber and is rotatably connected to the gun body, the mechanical lock extends along the distribution direction of the gun head and the gun body, and the end of the mechanical lock in the extension direction that is closer to the gun head is a lock portion, which is located outside the gun body and is used to connect to a charging socket; The charging gun also includes a first microswitch, which is located in the chamber. Compared with the position where the mechanical lock rotates to connect to the gun body, the first microswitch is closer to the lock head. The mechanical lock is used to trigger or release the first microswitch during the rotation process.
2. The charging gun according to claim 1, characterized in that The charging gun also includes an adjusting member, which is installed on the mechanical lock. The adjusting member protrudes to the side of the mechanical lock facing the first microswitch. The adjusting member is used to adjust the distance between itself and the first microswitch. The mechanical lock triggers the first microswitch through the adjusting member.
3. The charging gun according to claim 2, characterized in that: The mechanical lock has a threaded hole. Compared with the position where the mechanical lock is rotatably connected to the gun body, the threaded hole is closer to the lock head portion, and the adjusting member is threadedly connected to the threaded hole.
4. The charging gun according to claim 3, characterized in that: The threaded hole passes through the mechanical lock, a port at one end of the threaded hole faces the first micro switch, and a port at the other end of the threaded hole faces away from the first micro switch.
5. The charging gun according to claim 4, characterized in that: The adjusting member is a screw, and the threaded hole includes a connected countersunk section and a screw hole section. The diameter of the countersunk section is larger than the diameter of the screw hole section. The countersunk section is located on the side of the screw hole section away from the first micro switch. The screw of the adjusting member is threadedly connected to the screw hole section, and the head of the adjusting member is located in the countersunk section.
6. The charging gun according to claim 4 or 5, characterized in that: The gun body forms a partial wall surface of the chamber surrounding the mechanical lock, the threaded hole is located in the chamber, and the end of the gun body that fixes the gun head has an opening, the opening is connected to the chamber, and the lock head extends out of the gun body through the opening.
7. The charging gun according to claim 1, characterized in that: The end of the mechanical lock in the extension direction that is farther from the gun head is a pressing portion, and the pressing portion is at least partially located outside the gun body and is used to provide a pressing position; In the extension direction of the mechanical lock, the distance between the position where the mechanical lock is rotated to connect to the gun body and the pressing part is L1, and the distance between the position where the mechanical lock is rotated to connect to the gun body and the position where the mechanical lock is used to trigger the first micro switch is L2, 0.8≤L1 / L2≤1.
2.
8. The charging gun according to claim 1, characterized in that: The charging gun further includes an elastic member, which connects the gun body and the mechanical lock, and is used to drive the mechanical lock to trigger the first micro switch.
9. The charging gun according to claim 1, characterized in that: The locking portion is a lock hook, which is located on the side of the gun head and bent toward the gun head. The locking portion is used to hook the charging socket, and the first micro switch and the gun head are located on the same side of the mechanical lock.
10. The charging gun according to claim 1, characterized in that: The charging gun further includes an electronic lock and a second micro switch, both of which are located in the chamber. The electronic lock has an active state and a locked state. In the active state, the electronic lock allows the mechanical lock to rotate, and in the locked state, the electronic lock restricts the mechanical lock from rotating. In one of the active state and the locked state, the electronic lock triggers the second micro switch, and in the other of the active state and the locked state, the electronic lock releases the second micro switch.
11. A charging device, characterized in that: The device comprises a power module and a charging gun according to any one of claims 1 to 10, wherein the charging gun is electrically connected to the power module via a cable.