Locking device

Abstract

The utility model provides a locking device, which comprises a shell, a locking mechanism, a locking mechanism and a locking mechanism, wherein the shell is provided with an accommodating space; the power transmission mechanism is at least partially located in the containing space, connected with the locking piece and used for driving the locking piece to move so as to achieve locking and unlocking, and the power transmission mechanism is provided with an output end; the manual unlocking device is connected with the output end; the manual unlocking device comprises an operation part and a main body part, the main body part is provided with a disc-shaped part and a connecting part, and when the locking device is in a locking state, the connecting part is attached to the periphery of the disc-shaped part. According to the scheme, the manual unlocking device is arranged at the tail end of the locking device, the locking device can be conveniently driven to do motion opposite to locking operation, unlocking is achieved, and the manual unlocking device is simple in structure, convenient to install, easy to operate and labor-saving in operation.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle technology, and specifically relates to a locking device. Background Technology

[0002] Electric vehicles, including pure electric vehicles and plug-in hybrid electric vehicles, are equipped with charging ports on the vehicle body to connect to an external power source for charging. To prevent the charging gun from accidentally dislodging—for example, if a passing person or vehicle pulls the charging cable, or if someone deliberately pulls it out—a locking device is installed on the vehicle to lock the charging gun in place during charging. This is especially useful for vehicles with two charging ports for both DC fast charging and AC slow charging, as it ensures that the connection is secure and that plugging and unplugging is not done while the circuit is open, preventing arcing and damage to the connectors. This is particularly dangerous for vehicles with DC fast charging, which typically uses higher current and voltage.

[0003] The locking device is generally automatic. After the charging gun is inserted into the interface on the vehicle, a physical detection signal is triggered, and communication between the vehicle and the charging pile begins. Through communication via the control circuit, after confirming that the plug is inserted in place, there is no fault, and the vehicle is allowed to charge, the locking device is controlled to operate, thereby achieving locking.

[0004] However, the locking device may malfunction in certain situations. For example, the vehicle or charging station may lose power, the charging system may malfunction and prevent normal unlocking, or a quick disconnection may be required in the event of an accident or fire. Therefore, a manual unlocking device is necessary.

[0005] With the continuous development of electric vehicles, the demand for locking devices and their manual unlocking mechanisms is also increasing. Therefore, it is necessary to develop new locking devices with manual unlocking mechanisms. Utility Model Content

[0006] Therefore, the present invention proposes the following technical solution.

[0007] A locking device, the locking device comprising:

[0008] A housing having a receiving space;

[0009] A power transmission mechanism, at least partially located within the receiving space and connected to a locking member, for driving the locking member to move to achieve locking and unlocking, the power transmission mechanism having an output end;

[0010] A manual unlocking device is connected to the output terminal;

[0011] The manual unlocking device includes:

[0012] The device includes an operating part and a main body part. The main body part has a disc-shaped part and a connecting part. When the locking device is in the locked state, the connecting part is attached to the outer periphery of the disc-shaped part.

[0013] According to one aspect of the present invention, the main body further includes a mating part, which engages with the operating part.

[0014] According to one aspect of the present invention, the operating part includes a pull wire and a connecting part, the connecting part being accommodated in the mating part.

[0015] According to one aspect of the present invention, the joint is a sphere or a cylinder.

[0016] According to one aspect of the present invention, the manual unlocking device further includes a guide portion having at least one straight portion to guide the movement direction of the operating portion.

[0017] According to one aspect of the present invention, the guide portion includes two straight portions and a curved portion located between the two straight portions, the two straight portions being arranged at an angle, and the operating portion passing through one or both of the two straight portions.

[0018] According to one aspect of the present invention, the power transmission mechanism includes an electric motor and the following transmission stages:

[0019] A helical gear transmission stage consisting of a first helical gear and a second helical gear, which are coaxially and fixedly disposed with the output shaft of the motor;

[0020] A worm gear transmission stage consisting of a worm gear and a third gear that are coaxially and fixedly mounted with the second helical gear;

[0021] A helical gear transmission stage consisting of a fourth helical gear and a fifth helical gear, which are coaxially and fixedly arranged with the third gear.

[0022] According to one aspect of the present invention, the fifth helical gear serves as the output end, and is further provided with another output end, which is connected to the fifth helical gear in a transmission manner.

[0023] According to one aspect of the present invention, the output end is connected to a locking pin via a motion conversion component, and the other output end is connected to another locking pin via a cam mechanism, a linkage mechanism, or a gear and rack mechanism.

[0024] The proposed solution of this utility model is to set a manual unlocking device at the end of the locking device, which can easily drive the locking device to make a movement opposite to the locking operation, thereby realizing unlocking. Moreover, the manual unlocking device has a simple structure, is easy to install, easy to operate, and requires little effort.

[0025] Other advantageous features and benefits of this invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 A perspective view of a locking device with a manual unlocking mechanism is shown.

[0027] Figure 2 A perspective view of the transmission mechanism of the locking device with a manual unlocking device is shown.

[0028] Figure 3 The main view of the manually unlocking device is shown.

[0029] Figure 4 This shows a front view of the main component of the manual unlocking device from another direction.

[0030] Figure 5 A perspective view of the connector is shown. Detailed Implementation

[0031] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0032] The descriptions of orientation used in the following description, such as "left," "right," "up," and "down," are for convenience only and are not intended to limit the technical solution of the utility model, unless explicitly stated otherwise. Furthermore, the terms "first" and "second," etc., used below to describe elements of this application are only used to distinguish individual elements and are not intended to limit the nature, sequence, order, or number of these elements.

[0033] Figure 1 A perspective view of a locking device with a manual unlocking mechanism is shown. The locking device has a housing 10, which may be formed from multiple sub-housings to create a receiving space. On the other hand, the housing 10 also has one or more openings, which may serve as support portions for, for example, the manual unlocking mechanism 30, or allow portions inside the housing to extend outside the housing for connection with other components.

[0034] exist Figure 1In the example shown, an output terminal 20 is provided, which can be connected to a locking pin via a motion conversion component, thereby realizing the reciprocating linear motion of the locking pin to lock or unlock the charging gun. Furthermore, Figure 1 The image also shows a manual unlocking device 30 for manually unlocking the locking device.

[0035] Figure 2 A perspective view of the transmission mechanism of a locking device with a manual unlocking device is shown. An electric motor 41 generates power and transmits it to the locking pin via the transmission mechanism. In a preferred embodiment, the power from the electric motor 41 is transmitted via a first-stage helical gear pair, a first-stage worm gear pair, and another first-stage helical gear pair. Specifically, the rotor shaft of the electric motor 41 serves as the output shaft and is fixedly connected to the first helical gear 41, which is constantly meshed with the second helical gear 43, forming a first-stage helical gear pair. The worm gear 44 is coaxial with and fixedly mounted to the second helical gear 43, and meshes with the third gear 45. The third gear 45 can be a helical gear or a worm wheel. The worm gear 44 and the third gear 45 form a worm gear pair. The third gear 45 is coaxial with and fixedly mounted to the fourth helical gear 46, which is constantly meshed with the fifth helical gear 47. The fourth helical gear 46 and the fifth helical gear 47 form a first-stage helical gear pair. Figure 2 As can be seen, the three-stage gear transmission mechanism described above enables the transmission mechanism to convert the power of the electric motor to a suitable speed and torque while maintaining a small size, which is especially important for locking devices installed on vehicles.

[0036] The fifth helical gear 47 is the last stage of the entire transmission mechanism and also serves as the output end 20.

[0037] Figure 2 The key components of the manual unlocking device 30 are also shown. The manual unlocking device 30 includes an operating part 31, a guide part 32, and a main body part 33. Figure 3 The main view of the manual unlocking device is shown. (Combined) Figure 2 and Figure 3 The operating unit 31 can be directly operated by an operator, for example, by means of a pull cord. To facilitate connection between the operating unit and the main body 33, the operating unit 31 has a pull cord 311 on one side and a connecting part 312 on the other. The connecting part 312 can have a spherical structure and can be fixedly disposed in the mating part 333 of the main body 33. Thus, when the pull cord 311 of the operating unit 31 is pulled, the mating part 333 can be driven via the connecting part 312, thereby driving the main body to move.

[0038] The guide section 32 has two straight sections and a curved section connecting these two straight sections. By setting the curvature of the curved section, the included angle between the two straight sections can be set, thereby allowing the movement direction of the operating section 31 to be changed when one straight section is used as an inlet and the other as an outlet. Figure 3 In the example shown, the pull wire 311 passes through only one of the straight sections, thus the pull wire 311 is guided only by a straight section parallel to it without changing direction. In this case, an opening is provided on the curved section so that the pull wire 311 can pass through the opening.

[0039] On the other hand, the pull wire 311 can also pass through two straight sections and a curved section. Figure 3 In the example shown, the two straight sections are perpendicular to each other. This allows the direction of the pull wire 311 to be changed. By providing the guide section 32, the arrangement of the manual unlocking device 30 and the direction of force applied to the pull wire 311 become more flexible.

[0040] Figure 4 This shows a front view of the main component of the manual unlocking device from another direction. Figure 3 and Figure 3 As can be seen, the main body 33 includes a disc-shaped portion 331, a connecting portion 332, and a mating portion 333. As mentioned above, the mating portion 333 has a structure that matches the shape of the joint portion 312 of the operating portion 31, thereby connecting the joint portion 312 and the mating portion 333. Besides the spherical structure described above, the joint portion 312 can also be other feasible structures, such as a cylindrical structure. The connecting portion 332 is used to connect the disc-shaped portion 331 and the mating portion 333. The disc-shaped portion 331 is disc-shaped, while the connecting portion 332 is a flexible structure that can fit around the outer periphery of the disc-shaped portion 331. Preferably, the length of the connecting portion 332 does not exceed half of the outer contour of the disc-shaped portion 331. When the locking device is locking, the connecting part 332 fits against the outer contour of the disc-shaped part 331 as the disc-shaped part 331 rotates. When unlocking, the connecting part 332 pulls the disc-shaped part 331 to rotate in the other direction, thereby achieving manual unlocking.

[0041] As a significant improvement of this invention, since the connecting portion 332 fits snugly against the outer contour of the disc-shaped portion 331, when the pull wire 311 applies tension, the tension acting on the connecting portion 332 always applies with the maximum lever arm, thus reducing operational effort. Furthermore, this manual unlocking device has few components, is easy to install, and can be integrally formed by means such as injection molding of the main body 33, operating portion 31, and guide portion 32, making it easy to manufacture.

[0042] The disc-shaped portion 331 is fixedly connected to the fifth helical gear 47 on its radially inner side, thereby enabling both to rotate together. Here, the rotation direction of the fifth helical gear 47 caused by the pull cable 311 is opposite to the rotation direction of the fifth helical gear 47 caused by the motor 41 through the transmission mechanism. Thus, in the locked state, manually pulling the pull cable 311 can rotate the disc-shaped portion 331, which in turn rotates the fifth helical gear 47. The rotation of the fifth helical gear 47, in turn, drives the motion conversion component and the locking pin connected to it to move, thereby unlocking the device.

[0043] Furthermore, the fifth helical gear 47 can also drive another output unit, which can then connect to another locking pin, thereby locking and unlocking another charging gun. For example, the fifth helical gear 47 can be connected to a rack and pinion, or through a cam mechanism, linkage mechanism, etc., to achieve the reciprocating linear motion of the other locking pin. This is particularly applicable to electric vehicles with two charging ports. For example, one charging port is used for slow charging, and the other for fast charging. In this way, by using a motor and a transmission mechanism, both charging ports on a vehicle can be locked and unlocked simultaneously.

[0044] Accordingly, since the manual unlocking device is connected to the fifth helical gear 47, the charging guns in the two charging ports can be manually unlocked.

[0045] Figure 5 A perspective view of the connector is shown. The connector includes an output interface 51, a manual unlocking device connection portion 52, and a fifth helical gear fixing portion 53. The output interface 51 is used to connect with the motion conversion member described above. For this purpose, the output interface 51 has a prismatic structure to mate with the shape of the corresponding component, thereby transmitting rotational power. The manual unlocking device connection portion 52 is used to connect with a manual unlocking device, specifically to a disc-shaped portion 331, for example, to a protrusion 3311 on the disc-shaped portion 331. Alternatively, a groove for mates with the protruding manual unlocking device connection portion 52 may be provided on the radially inner side of the disc-shaped portion 331.

[0046] The connector is also provided with a fixing part 53 for fixing to the fifth helical gear 47. The fixing part 53 may be in the form of a groove or a protrusion, which mates with the corresponding protrusion or groove shape on the fifth helical gear 47.

[0047] Thus, the connector is connected to the fifth helical gear 47 on one hand, to the manual unlocking device on the other hand, and can also be connected to the locking pin drive.

[0048] The foregoing description is merely an exemplary embodiment relating to the spirit and principles of this utility model. Those skilled in the art will understand that various changes can be made to the described examples without departing from the spirit and principles, and such changes and their various equivalents are contemplated by the inventors and fall within the scope defined by the claims of this utility model.

Claims

1. A locking device, the locking device comprising: A housing (10) having a receiving space; A power transmission mechanism, which is at least partially located within the receiving space and connected to a locking member, is used to drive the locking member to achieve locking and unlocking, and the power transmission mechanism has an output end (20); A manual unlocking device (30) is connected to the output terminal (20); Its features are, The manual unlocking device includes: The device includes an operating part (31) and a main body part (33), the main body part having a disc-shaped part (331) and a connecting part (332), the connecting part being attached to the outer periphery of the disc-shaped part when the locking device is in the locked state.

2. The locking device according to claim 1, characterized in that, The main body also includes a mating part (333), which engages with the operating part.

3. The locking device according to claim 2, characterized in that, The operating part includes a pull wire (311) and a connecting part (312), the connecting part being accommodated in the mating part.

4. The locking device according to claim 3, characterized in that, The joint is a sphere or a cylinder.

5. The locking device according to any one of claims 1-4, characterized in that, The manual unlocking device further includes a guide (32) having at least one straight portion to guide the movement direction of the operating part.

6. The locking device according to claim 5, characterized in that, The guide portion includes two straight sections and a curved section located between the two straight sections, the two straight sections being arranged at an angle, and the operating portion passing through one or both of the two straight sections.

7. The locking device according to any one of claims 1-4, characterized in that, The power transmission mechanism includes an electric motor (41) and the following transmission stages: A helical gear transmission stage consisting of a first helical gear (42) and a second helical gear (43) that are coaxial with and fixedly disposed on the output shaft of the motor; A worm gear transmission stage consisting of a worm (44) and a third gear (45) that are coaxial with and fixedly mounted to the second helical gear (43); The helical gear transmission stage consists of a fourth helical gear (46) and a fifth helical gear (47) that are coaxially and fixedly arranged with the third gear.

8. The locking device according to claim 7, characterized in that, The fifth helical gear (47) serves as the output end, and is also provided with another output end, which is connected to the fifth helical gear in a transmission manner.

9. The locking device according to claim 8, characterized in that, The output end is connected to the locking pin through a motion conversion component, and the other output end is connected to another locking pin through one of a cam mechanism, a linkage mechanism, or a gear and rack mechanism.

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