Locking device and vehicle

Abstract

Provide a locking device and a vehicle. The locking device includes a base (1), a pressing block (2), and a driving unit (3). The pressing block (2) is pivotally attached to the base (1). The driving unit (3) includes a driving source and a link assembly (32). The driving source is fixedly installed on the base (1). The link assembly is connected between the pressing block (2) and the driving source. The driving source drives the link assembly (32) to move and drives the pressing block (2) to rotate about the pivot axis between the pressing block (2) and the base (1), so that the pressing block (2) selectively presses or disengages from the locking target member. In this locking device, by driving the link assembly so that the driving source operates the pressing block, compared with the prior art, the locking force and the compatibility with other devices are improved. Since the driving source is fixedly installed on the base, the locking device has a more compact structure and a smaller occupied space. By using this locking device, the vehicle can optimize the overall layout of the vehicle and has higher safety.

Description

Cross - reference to related applications

[0001] This application claims the priority of a patent application with application number 202221301459.1 and invention title "Locking device and vehicle", which was filed with the China National Intellectual Property Administration on May 27, 2022.

Technical field

[0002] This application relates to the technical field of vehicles, and specifically to a locking device and a vehicle.

Background art

[0003] The battery swapping mode of an electric vehicle means that through a centralized charging station, a large number of batteries are stored and charged centrally, and the battery swapping operation of the electric vehicle is carried out at the battery swapping station. This mode not only reduces the costs of battery swapping and maintenance, but also shortens the waiting time for charging.

[0004] In conventional battery - swapping large - scale trucks, in order to lock the battery for battery swapping to the battery - swapping base of the vehicle body, a pin - locking mechanism is often adopted, but the pin - locking mechanism has the following problems. 1) The pin - locking mechanism has poor adaptability to high places and low locking force. 2) The air cylinder is generally hinged to achieve the purpose of rotating and driving the locking mechanism parts to lock the battery for battery swapping to the battery - swapping base. However, its structure is complex and occupies a lot of space.

Summary of the invention

Problems to be solved by the invention

[0005] The main object of this application is to provide a locking device and a vehicle with a compact structure, small occupied space, high mountability, wide application range.

Means for solving the problems

[0006] To achieve the above object, the following technical solutions are provided.

[0007] In one aspect, a base, a pressing block pivotally attached to the base, a driving source and a link assembly, the driving source being fixed to the base, the link assembly being connected between the pressing block and the driving source, the driving source driving the link assembly so that the pressing block rotates about the pivot axis between the pressing block and the base, whereby the pressing block selectively presses or disengages from a member to be locked, and a driving unit including the pressing block is provided.

[0008] In any form of the locking device, the driving source includes an elastic member and a unlocking unit, the elastic member being connected to the link assembly, the unlocking unit being connected to the elastic member, and due to the elastic restoring force of the elastic member, the link assembly drives the pressing block to hold the pressing force on the member to be locked, and the unlocking unit is used to cancel the pressing force by the elastic member and compress the elastic member to disengage the pressing block from the member to be locked.

[0009] In any form of the locking device, two link assemblies are provided, the two link assemblies are symmetrically provided on both sides of the pressing block, the driving source is respectively connected to the two link assemblies, whereby the driving source drives the two link assemblies to operate synchronously.

[0010] In any form of the locking device, the locking device further includes an adapter plunger, the adapter plunger including a first adapter end and a second adapter end provided in a one-to-one correspondence with the two link assemblies, the first adapter end being fixedly connected to the operating end of the driving source, and the second adapter end being pivotally attached to the corresponding link assembly.

[0011] As an arbitrary form of the locking device, the adapter plunger has a U-shaped structure, the first adapter end is provided at the bottom end of the U-shaped structure, and the second adapter end is provided at the tops of both ends of the opening of the U-shaped structure.

[0012] As an arbitrary form of the locking device, the link assembly has a triangular locus and includes a first end, a second end, and a third end provided in sequence. The first end is pivotally attached to the base, and the second end is a first link pivotally attached to the corresponding second adapter end, and a second link having one end pivotally attached to the third end and the other end pivotally attached to the pressing block.

[0013] As an arbitrary form of the locking device, the drive unit further includes a first connecting shaft. Both ends of the first connecting shaft penetrate one end of the second link of the two link assemblies respectively, and then are pivotally attached to the first link of the two link assemblies.

[0014] As an arbitrary form of the locking device, the base includes support frames provided in a one-to-one correspondence with the two link assemblies. The first end is pivotally attached to the corresponding support frame. The support frame has an inverted U-shaped structure. The second adapter end of the adapter plunger extends from the U-shaped opening of the corresponding support frame and is pivotally attached to the second end of the corresponding first link.

[0015] As an arbitrary form of the locking device, the base includes a positioning pedestal and a mounting pedestal connected to one side of the positioning pedestal. The positioning pedestal and the mounting pedestal are provided at an angle, and the angle is an obtuse angle. The drive source is fixedly provided on the side of the mounting pedestal opposite to the pressing block, and the axis of the drive source is perpendicular to the mounting pedestal.

[0016] The adapter plunger includes a first rod, a second rod, and a third rod that are connected in sequence. The first rod and the third rod are provided opposite to each other. The first adapter end is provided at the central portion of the second rod, and the two second adapter ends are respectively provided at the ends of the first rod away from the second rod and the ends of the third rod away from the second rod.

[0017] The first rod, the second rod, and the third rod have a U-shaped structure formed integrally.

[0018] The pressing block is provided with a central shaft hole at the central portion. The drive unit further includes a second connecting shaft that is inserted into the central shaft hole and pivotally attached to the second links of the two link assemblies at both ends respectively. The pressing block is provided with end shaft holes at the ends. A mounting pin shaft is inserted into the end shaft holes, and both ends of the mounting pin shaft are pivotally attached to the two support frames respectively.

[0019] The drive source includes a plunger. The plunger is provided to be telescopic. The plunger is drivingly connected to the link assembly. The link assembly is driven to move by the plunger. The mounting pedestal is provided with a through hole, and at least a part of the plunger penetrates through the through hole and is connected to the link assembly.

[0020] The base includes a positioning pedestal and a mounting pedestal provided at an end of the positioning pedestal, forming an angle with the positioning pedestal, and the drive unit is provided thereon.

[0021] The drive unit includes a drive source that is drivingly connected to the link assembly. The mounting pedestal includes a first mounting end face and a second mounting end face provided opposite to each other. The link assembly is provided on the first mounting end face, and at least a part of the drive source is provided on the second mounting end face.

[0022] The drive source includes a plunger, the plunger is provided so as to be stretchable, the plunger is drivably connected to the link assembly, the link assembly is driven to move by the plunger, a through hole is provided in the mounting pedestal, and at least a part of the plunger penetrates through the through hole and is connected to the link assembly.

[0023] The mounting pedestal is provided with the first mounting end face and the second mounting end face respectively, is connected to the end of the positioning pedestal, and includes a mounting plate body that forms an angle with the positioning pedestal, and two protective plate bodies. Two of the protective plate bodies are provided at both ends of the mounting plate body respectively, a mounting space is formed between the two protective plate bodies, and at least a part of the drive source is located in the protective plate body within the mounting space.

[0024] The positioning pedestal is a first pedestal, a second pedestal, and a third pedestal that are connected in sequence. The first pedestal and the third pedestal each include a first pedestal, a second pedestal, and a third pedestal that form an angle with the mounting pedestal. The first pedestal and the third pedestal are provided opposite to each other, whereby the first pedestal, the second pedestal, and the third pedestal define a weight reduction space.

[0025] In another aspect, it includes the locking device according to any one of the above items, further includes a replacement battery for a battery and a battery replacement base, the drive source drives the pressing block to rotate about the pivot axis of the pressing block on the base, whereby the pressing block selectively presses the replacement battery for the battery against the battery replacement base, providing a vehicle.

Advantages of the Invention

[0026] Compared with the prior art, the beneficial effects of the present application are as follows.

[0027] In the locking device of the present application, by driving the link assembly so that the driving source operates the pressing block, compared with the prior art, the locking force and the compatibility with other devices are improved. By fixing the driving source to the base, the locking device has a more compact structure and a smaller occupied space.

[0028] By adopting the above locking device, the vehicle of the present application optimizes the overall layout of the vehicle and has higher safety.

Brief Description of the Drawings

[0029] The drawings of the specification constituting a part of the present application are for providing a further understanding of the present application. The schematic embodiments and their descriptions of the present application are for the purpose of explaining the present application and do not unduly limit the present application.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Explanation of Reference Signs

[0030] 100 Replacement battery for battery 200 Battery replacement base 1 Base 11 Support frame 12 Positioning pedestal 121 Relief groove 13 Mounting pedestal 2 Pressing block 21 End shaft hole 22 Central shaft hole 23 Mounting pin shaft 3 Drive unit 31 Brake chamber 311 Plunger 32 Link assembly 321 First link 3211 First end 3212 Second end 3213 Third end 3214 First shaft hole 3215 Second shaft hole 3216 Third shaft hole 3217 First pin shaft 3218 Second pin shaft 322 Second link 3221 Fourth shaft hole 3222 Fifth shaft hole 33 First connecting shaft 34 Second connecting shaft 4 Adapter plunger 41 First adapter end 42 Second adapter end

Embodiments for Carrying Out the Invention

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. However, it is obvious that the described embodiments are only part of the embodiments of the present application and not all of them. Usually, the components of the embodiments of the present application described and illustrated in the drawings of this specification can be arranged and designed in various different configurations.

[0032] Accordingly, the following detailed description of the embodiments of the present application shown in the drawings is not intended to limit the scope of the claimed present application, but merely shows selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0033] In addition, the same reference numerals and characters indicate the same items in the following drawings. Therefore, if an item is defined in one drawing, there is no need to further define or interpret it in subsequent drawings.

[0034] In the description of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is always arranged when in use. It is for the purpose of facilitating the description and simplifying the description of the present application, and does not indicate or imply that the device or element referred to must have a specific orientation or be configured and operate in a specific orientation. Therefore, it cannot be understood as limiting the present application. Furthermore, terms such as "first", "second", "third", etc. are only used for the purpose of distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, "a plurality" means two or more.

[0035] In the description of the present application, unless specifically defined and limited otherwise, the terms "provide" and "connect" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, or an integral connection. It may be a mechanical connection or an electrical connection. Those skilled in the art can specifically understand the specific meanings of the above terms in the present application.

[0036] In the present application, unless otherwise explicitly specified and limited, the fact that the first feature is "above" or "below" the second feature may include the case where the first feature and the second feature are in direct contact, or may include the case where the first feature and the second feature are not in direct contact but are in contact through another feature therebetween. Further, the fact that the first feature is "above", "upper", and "upper surface" of the second feature includes the case where the first feature is directly above and diagonally above the second feature, or simply indicates that the first feature is horizontally higher than the second feature. The fact that the first feature is "below", "lower", and "lower surface" of the second feature includes the case where the first feature is directly below and diagonally below the second feature, or simply indicates that the first feature is horizontally lower than the second feature.

[0037] Hereinafter, embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements, or elements having the same or similar functions through the drawings. The embodiments described below with reference to the drawings are exemplary and are used only for the purpose of explaining the present application and should not be construed as limiting the present application.

[0038] As shown in FIGS. 1 to 8, the present embodiment provides a locking device, which includes a base 1, a pressing block 2, and a driving unit 3. The pressing block 2 is pivotally attached to the base 1. The driving unit 3 includes a driving source and a link assembly 32. The driving source is fixed to the base 1. The link assembly 32 is connected between the pressing block 2 and the driving source. The driving source drives the link assembly 32 so that the pressing block 2 rotates about the pivotal axis of the pressing block 2 to the base 1, whereby the pressing block 2 selectively presses or disengages from the member to be locked.

[0039] By driving the link assembly 32 so that the driving source operates the pressing block 2, compared with the prior art, the locking force and the compatibility with other devices are improved. By fixing the driving source to the base 1, the locking device has a more compact structure and a smaller occupied space.

[0040] Optionally, the drive source includes an elastic member and a unlocking unit. The elastic member is configured to apply pressure and hold the pressing force against the member to be locked. The unlocking unit is used to cancel the pressing force by the elastic member and compress the elastic member, so as to disengage the pressing block 2 from the member to be locked. As an example, the elastic member is a compression spring. Of course, the elastic member may be other structures that can be elastically deformed and spontaneously recovered, such as a compressible airbag.

[0041] The elastic member is configured to apply pressure and hold the pressing force against the member to be locked. The unlocking unit is used to cancel the pressing force by the elastic member and compress the elastic member, so as to make the pressing block 2 detachable from the member to be locked. When an air cylinder is used as the drive source, the problem that the locking device cannot function when the gas source is lost is solved, and the safety risk is eliminated.

[0042] In this embodiment, specifically, the drive source is the brake chamber 31. Since the structure of the brake chamber 31 is a prior art, it will not be described in detail here. The elastic member is a spring inherent inside the brake chamber 31. The unlocking unit is a gas source (not shown) and related pipeline accessories. When the air inlet of the brake chamber 31 is connected to the gas source and gas with a predetermined pressure is introduced from the gas source into the brake chamber 31, the elastic member is compressed by the action of the gas pressure. At this time, the plunger 311 of the brake chamber 31 drives the link assembly 32 to rotate the pressing block 2 and disengage the pressing block 2 from the member to be locked. When the introduction of the pressurized gas from the gas source into the brake chamber 31 stops, the elastic member spontaneously recovers. At this time, the plunger 311 of the brake chamber 31 drives the link assembly 32 to rotate the pressing block 2, whereby the pressing block 2 presses the member to be locked. With such a configuration, even when the gas source is interrupted unintentionally, the locking device can lock the member to be locked, and the safety is higher.

[0043] In this embodiment, the brake chamber 31 is fixedly provided on the base 1. The plunger 311 of the brake chamber 31 is connected to the compression spring of the brake chamber 31. The plunger 311 can extend outward under the action of the elastic force of the compression spring to provide a driving force. Also, the compression spring is elastically deformed, whereby the plunger 311 can swing at an angle within the range of ±6°, and the applicability is high.

[0044] Optionally, two link assemblies 32 are provided. The two link assemblies 32 are symmetrically provided on both sides of the pressing block 2. The drive source is respectively connected to the two link assemblies 32, whereby the drive source drives the two link assemblies 32 to operate synchronously. Thereby, the placement force and stiffness of the entire locking device can be increased, and further the locking force can be increased, and the service life can be extended.

[0045] Optionally, the locking device further includes an adapter plunger 4. The adapter plunger 4 includes a first adapter end 41 and a second adapter end 42 provided in a one-to-one correspondence with the two link assemblies 32. The first adapter end 41 is fixedly connected to the operating end of the drive source. In this embodiment, the operating end of the drive source is the plunger 311 of the brake chamber 31. The second adapter end 42 is pivotally attached to the corresponding link assembly 32, whereby one adapter plunger 4 drives the two link assemblies 32 to operate synchronously.

[0046] In this embodiment, the adapter plunger 4 has a U-shaped structure. The first adapter end 41 is provided at the bottom end of the U-shaped structure, and the second adapter end 42 is provided at the tops of both ends of the U-shaped structure. The U-shaped adapter plunger 4 is provided in accordance with the two link assemblies 32, whereby the transmission of the link assembly 32 becomes more stable, and also the placement force and stiffness of the entire locking device are improved, and further the locking force is improved.

[0047] Specifically, the adapter plunger 4 includes a first rod, a second rod, and a third rod connected in sequence, and the first rod and the third rod are provided opposite to each other. The first adapter end 41 is provided at the central portion of the second rod, and the two second adapter ends 42 are respectively provided at the ends of the first rod away from the second rod and the ends of the third rod away from the second rod. The first rod, the second rod, and the third rod have a U-shaped structure formed integrally.

[0048] Optionally, the link assembly 32 includes a first link 321 and a second link 322. The first link 321 has a triangular locus and includes a first end 3211, a second end 3212, and a third end 3213 provided in sequence. The first end 3211 is pivotally attached to the base 1, and the second end 3212 is pivotally attached to the corresponding second adapter end 42. One end of the second link 322 is pivotally attached to the third end 3213, and the other end is pivotally attached to the pressing block 2. Compared with the prior art, in this embodiment, the brake chamber 31 drives the link assembly 32 to rotate the pressing block 2, and the brake chamber 31 is fixedly installed on the base 1, which plays a role in simplifying the structure and saving the occupied space.

[0049] Optionally, the drive unit 3 further includes a first connecting shaft 33. Both ends of the first connecting shaft 33 penetrate through one end of the second link 322 of the two link assemblies 32 respectively, and then are pivotally attached to the first links of the two link assemblies 32. By connecting the two link assemblies 32 with the first connecting shaft 33, while ensuring the synchronization of the two link assemblies 32, the strength and the mounting force of the whole structure can be improved.

[0050] Optionally, the drive unit 3 further includes a second connecting shaft 34. The second connecting shaft 34 is inserted through the pressing block 2, and both ends of the second connecting shaft 34 are respectively pivotally attached to the second links 322 of the two link assemblies 32. In this way, not only is the processability excellent and the assembly of the second link 322 and the pressing block 2 facilitated, but also the connection stability between the second link 322 and the pressing block 2 can be improved.

[0051] In this embodiment, the first link 321 has a structure in the shape of a triangular block. The first link 321 is provided with a first shaft hole 3214, a second shaft hole 3215, and a third shaft hole 3216 arranged in a triangular shape. Here, a first pin shaft 3217 is inserted into the first shaft hole 3214, and the first link 321 is pivotally attached to the base 1 by the first pin shaft 3217. A second pin shaft 3218 is inserted into the second shaft hole 3215, and the first link 321 is pivotally attached to a second adapter end 42 corresponding to the adapter plunger 4 by the second pin shaft 3218. The first connecting shaft 33 is inserted through two second links 322 and pivotally attached to the two second links 322. Both ends of the first connecting shaft 33 are inserted into the third shaft holes 3216 of the two first links 321 respectively.

[0052] A fourth shaft hole 3221 and a fifth shaft hole 3222 are provided at both ends of the second link 322 respectively. The first connecting shaft 33 is inserted into the fourth shaft hole 3221, and the second connecting shaft 34 is inserted into the fifth shaft hole 3222.

[0053] To facilitate the assembly of the locking device and improve the rationality of the layout, the base 1 includes support frames 11 provided in a one-to-one correspondence with the two link assemblies 32. The first end 3211 is pivotally attached to the corresponding support frame 11.

[0054] In this embodiment, a terminal shaft hole 21 is provided at the end of the pressing block 2. A mounting pin shaft 23 is inserted into the terminal shaft hole 21. Both ends of the mounting pin shaft 23 are pivotally attached to the two support frames 11 respectively. The pressing block 2 is pivotally attached to the two support frames 11 by the mounting pin shaft 23, whereby the pressing block 2 is stably supported. A central shaft hole 22 is provided in the central portion of the pressing block 2, and the second connecting shaft 34 is inserted into the central shaft hole 22.

[0055] Optionally, the support frame 11 has an inverted U-shaped structure, and the second adapter end 42 of the adapter plunger 4 extends from the U-shaped opening of the corresponding support frame 11 and is pivotally attached to the second end 3212 of the corresponding first link 321. In other words, the first links 321 of the two link assemblies 32 are respectively located outside the corresponding support frames 11. Compared with the case where the two first links 321 are provided between the two support frames 11, the length of the mounting pin shaft 23 of the pressing block 2 can be shortened, which plays a role in improving the overall structural strength and reducing the occupied space.

[0056] Optionally, a connection reinforcement structure is provided between the support frame 11 and the base 1 to ensure the connection stability of both and improve the structural strength of the support frame 11.

[0057] Optionally, the base 1 includes a positioning pedestal 12 and a mounting pedestal 13 connected to one side of the positioning pedestal 12. The positioning pedestal 12 and the mounting pedestal 13 are provided at an angle, and this angle is an obtuse angle. The two support frames 11 are both fixedly installed on the mounting pedestal 13. Optionally, the drive source is fixedly installed on the side of the mounting pedestal 13 opposite to the pressing block 2, and the axis of the drive source is perpendicular to the mounting pedestal 13. In this embodiment, the drive source is the brake chamber 31. In other words, the brake chamber 31 is provided obliquely on the side of the mounting pedestal 13 opposite to the pressing block 2, which plays a role in reducing the space occupied between the pressing block 2 and the mounting pedestal 13 and does not interfere with the layout of the locking target member.

[0058] Furthermore, the mounting pedestal 13 includes a first mounting end face and a second mounting end face provided opposite to each other. The link assembly 32 is provided on the first mounting end face, and at least a part of the drive source is provided on the second mounting end face.

[0059] Specifically, the mounting pedestal 13 is provided with a first mounting end face and a second mounting end face respectively, is connected to the end of the positioning pedestal 12, and includes a mounting plate body that forms an angle with the positioning pedestal 12, and a protection plate body. There are two protection plate bodies provided, and the two protection plate bodies are respectively provided at both ends of the mounting plate body. An installation space is formed between the two protection plate bodies, and at least a part of the drive source is located in the protection plate body within the installation space.

[0060] The positioning pedestal 12 is a first pedestal, a second pedestal, and a third pedestal connected in sequence. The first pedestal and the third pedestal each include a first pedestal, a second pedestal, and a third pedestal that form an angle with the mounting pedestal respectively. The first pedestal and the third pedestal are provided opposite to each other, whereby the first pedestal, the second pedestal, and the third pedestal define a weight reduction space.

[0061] A through hole is opened in the mounting pedestal 13, and it can be understood that the plunger 311 of the brake chamber 31 is inserted into the through hole so as to be able to expand and contract therein, thereby achieving the purpose of rotationally driving the pressing block 2.

[0062] In order to reduce weight and the raw materials used, in this embodiment, a relief groove 121 is opened in the positioning pedestal 12.

[0063] Optionally, the base 1 is provided with a reinforcing structure that plays a role in improving the structural strength of the base 1. As an example, a reinforcing structure is provided on both the positioning pedestal 12 and the mounting pedestal 13.

[0064] Optionally, a mounting structure is provided on the side of the positioning pedestal 12 opposite to the mounting pedestal 13. Since the positioning pedestal 12 can be fixedly mounted to a structure such as the battery replacement base 200 of a vehicle by the mounting structure, the applicability is improved.

[0065] As an example, the operation process of the locking device in this embodiment is as follows.

[0066] When the plunger 311 of the brake chamber 31 extends outward, the plunger 311 can swing at an angle within the range of ±6°, and the two first links 321 can drive the adapter plunger 4 to rotate about the first pin shaft 3217. Also, the first link 321 rotationally drives the second link 322, and the second link 322 drives the pressing block 2 to rotate about the mounting pin shaft 23. When the free end of the pressing block 2 presses the member to be locked, the purpose of locking the member to be locked is achieved.

[0067] When the plunger 311 of the brake chamber 31 retracts inward, the adapter plunger 4 is driven to drive the two first links 321 to rotate about the first pin shaft 3217. Also, the first link 321 rotationally drives the second link 322, and the second link 322 drives the pressing block 2 to rotate about the mounting pin shaft 23. When the free end of the pressing block 2 disengages from the member to be locked, the lock of the member to be locked is released.

[0068] This embodiment further provides a vehicle including the above lock device. By using the above lock device, the dependence on the gas source of the vehicle during driving is eliminated, and the safety is higher.

[0069] Optionally, the vehicle further includes a replaceable battery 100 for the battery and a battery replacement base 200. In this embodiment, the replaceable battery 100 for the battery is the member to be locked. A drive source, such as the brake chamber 31, drives the pressing block 2 to rotate about the pivot shaft of the pressing block 2 on the base 1, whereby the pressing block 2 can selectively press the replaceable battery 100 for the battery against the battery replacement base 200. Compared with the prior art, the lock device of this embodiment does not depend on the gas source, reduces the risk that the replaceable battery 100 for the battery loosens unintentionally, and has higher safety.

[0070] Note that the above are only preferred embodiments of the present application and the technical principles applied. The present application is not limited to the specific embodiments described in this specification, and those skilled in the art understand that various obvious changes, readjustments, and substitutions are possible without departing from the protection scope of the present application. Therefore, although the present application has been described in relatively detail by the above embodiments, the present application is not limited to the above embodiments only, and can further include other equivalent embodiments as long as it does not deviate from the concept of the present application. The scope of the present application is determined by the appended claims.

Claims

1. A locking device, comprising: a base (1); a pressing block (2) pivotally attached to the base (1); a drive source and a link assembly (32), wherein the drive source is fixed to the base (1), the link assembly (32) is connected between the pressing block (2) and the drive source, and the drive source drives the link assembly (32) such that the pressing block (2) rotates about the pivot axis between the pressing block (2) and the base (1), whereby the pressing block (2) selectively presses or disengages from a member to be locked, and a drive unit (3) for this purpose.

2. The drive source includes an elastic member and a unlocking unit. The elastic member is connected to the link assembly (32), the unlocking unit is connected to the elastic member, and due to the elastic restoring force of the elastic member, the link assembly (32) drives the pressing block (2) to hold the pressing force against the member to be locked. The unlocking unit is used to cancel the pressing force by the elastic member and compress the elastic member, thereby disengaging the pressing block (2) from the member to be locked. The locking device according to claim 1, characterized in that.

3. Two link assemblies (32) are provided, and the two link assemblies (32) are symmetrically provided on both sides of the pressing block (2). The drive source is connected to the two link assemblies (32) respectively, whereby the drive source drives the two link assemblies (32) to operate synchronously. The locking device according to claim 1, characterized in that.

4. The locking device further includes an adapter plunger (4), which includes a first adapter end (41) and a second adapter end (42) provided in a one-to-one correspondence with the two link assemblies (32). The first adapter end (41) is fixedly connected to the operating end of the drive source, and the second adapter end (42) is pivotally attached to the corresponding link assembly (32). The locking device according to claim 3, characterized in that.

5. The adapter plunger (4) has a U-shaped structure, the first adapter end (41) is provided at the bottom end of the U-shaped structure, and the second adapter end (42) is provided at the tops of both ends of the opening of the U-shaped structure. The locking device according to claim 4, characterized in that.

6. The link assembly (32) has a triangular locus and includes a first end (3211), a second end (3212), and a third end (3213) provided in sequence. The first end (3211) is pivotally attached to the base (1), and the second end (3212) is a first link (321) pivotally attached to the corresponding second adapter end (42), and a second link (322) having one end pivotally attached to the third end (3213) and the other end pivotally attached to the pressing block (2). The locking device according to claim 4, characterized in that.

7. The drive unit (3) further includes a first connecting shaft (33). Both ends of the first connecting shaft (33) penetrate one end of the second link (322) of the two link assemblies (32) respectively, and then are pivotally attached to the first link (321) of the two link assemblies (32). The locking device according to claim 6, characterized in that.

8. The base (1) includes support frames (11) provided in a one-to-one correspondence with the two link assemblies (32). The first end (3211) is pivotally attached to the corresponding support frame (11). The support frame (11) has an inverted U-shaped structure. The second adapter end (42) of the adapter plunger (4) extends from the U-shaped opening of the corresponding support frame (11) and is pivotally attached to the second end (3212) of the corresponding first link (321). The locking device according to claim 6, characterized in that.

9. The base (1) includes a positioning pedestal (12) and a mounting pedestal (13) connected to one side of the positioning pedestal (12). The positioning pedestal (12) and the mounting pedestal (13) are provided at an angle, and the angle is an obtuse angle. The drive source is fixedly provided on the side of the mounting pedestal (13) opposite to the pressing block (2), and the axis of the drive source is perpendicular to the mounting pedestal (13). The locking device according to claim 1, characterized in that.

10. The adapter plunger (4) includes a first rod, a second rod, and a third rod that are connected in sequence, and the first rod and the third rod are provided opposite to each other. The first adapter end (41) is provided at the central portion of the second rod, and the two second adapter ends (42) are respectively provided at the end of the first rod away from the second rod and the end of the third rod away from the second rod. The locking device according to claim 4, characterized in that.

11. The first rod, the second rod, and the third rod have a U-shaped structure formed integrally. The locking device according to claim 10, characterized in that.

12. A central shaft hole (22) is provided in the pressing block (2), and the drive unit (3) Further includes a second connecting shaft (34) that is inserted into the central shaft hole (22) and whose both ends are pivotally attached to the second link (322) of the two link assemblies (32) respectively. The locking device according to claim 6, characterized in that.

13. A terminal shaft hole (21) is provided in the pressing block (2), and a mounting pin shaft (23) is inserted into the terminal shaft hole (21). Both ends of the mounting pin shaft (23) are pivotally attached to the two support frames (11) respectively. The locking device according to claim 8, characterized in that.

14. The drive source includes a plunger (311), the plunger (311) is provided so as to be telescopic, the plunger (311) is drivingly connected to the link assembly (32), and the link assembly (32) is driven to move by the plunger (311). A through hole is provided in the mounting pedestal (13), and at least a part of the plunger (311) penetrates the through hole and is connected to the link assembly (32). The locking device according to claim 9, characterized in that.

15. The base (1) A positioning pedestal (12) and A mounting pedestal (13) provided at an end of the positioning pedestal (12), forming an angle with the positioning pedestal (12), and having the drive unit (3) provided thereon. The locking device according to claim 1, characterized in that it includes.

16. The drive unit (3) includes a drive source that is drivingly connected to the link assembly (32). The mounting pedestal (13) includes a first mounting end face and a second mounting end face provided opposite to each other, the link assembly (32) is provided on the first mounting end face, and at least a part of the drive source is provided on the second mounting end face. The locking device according to claim 15, characterized in that.

17. The drive source includes a plunger (311), the plunger (311) is provided so as to be stretchable, the plunger (311) is drivably connected to the link assembly (32), and the link assembly (32) is moved and driven by the plunger (311). A through hole is provided in the mounting pedestal (13), and at least a part of the plunger (311) penetrates through the through hole and is connected to the link assembly (32). The locking device according to claim 16, characterized in that.

18. The mounting pedestal (13) is A mounting plate body, the first mounting end face and the second mounting end face are respectively provided on the mounting plate body, the mounting plate body is connected to the end of the positioning pedestal (12), and the mounting plate body forms an angle with the positioning pedestal (12). A mounting plate body, A protective plate body, two are provided, the two protective plate bodies are respectively provided at both ends of the mounting plate body, a mounting space is formed between the two protective plate bodies, and at least a part of the drive source is located in the mounting space. The locking device according to claim 16, characterized by including a protective plate body.

19. The positioning pedestal (12) is A first pedestal, a second pedestal, and a third pedestal connected in sequence, the first pedestal and the third pedestal each include a first pedestal, a second pedestal, and a third pedestal that form an angle with the mounting pedestal, The first pedestal and the third pedestal are provided opposite to each other, whereby the first pedestal, the second pedestal, and the third pedestal define a weight reduction space. The locking device according to claim 16, characterized in that.

20. A vehicle, Including the locking device according to any one of claims 1 to 19, The vehicle further includes a replacement battery (100) for the battery and a battery replacement base (200), and the drive source drives the pressing block (2) to rotate about the pivot axis of the pressing block (2) on the base (1), whereby the pressing block (2) selectively presses the replacement battery (100) for the battery against the battery replacement base (200). The vehicle is characterized by this.

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