Locking device and vehicle

Abstract

The utility model discloses a locking device and a vehicle, and relates to the technical field of vehicles. The device comprises a guide seat, a linear driver, a cross beam and a connecting rod locking assembly, a containing cavity is formed in the guide seat, the linear driver is fixed to the guide seat, and an output shaft of the linear driver extends into the containing cavity. The cross beam penetrates through the containing cavity and is movably connected with the guide seat, and the cross beam is fixedly connected with the output shaft so that the linear driver can drive the cross beam to do reciprocating linear motion when doing telescopic motion. The two connecting rod locking assemblies are hinged to the two ends of the cross beam respectively and fixedly connected with a vehicle-mounted bottom support of the vehicle. And when the linear driver extends out, the cross beam does linear motion far away from the linear driver and drives the two connecting rod locking assemblies to be unfolded in the direction far away from the cross beam so as to abut against the inner side of the battery box located on the vehicle-mounted bottom support to form locking. The two connecting rod locking assemblies are driven to be in linkage through one linear driver, and the number of driving pieces of the locking device and the structural complexity are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a locking device and a vehicle. Background Art

[0002] Currently, electric vehicles in my country primarily operate in two modes: charging and battery swapping. For battery swapping electric vehicles, the battery housing is primarily secured in two ways: behind the cab, or underneath the vehicle, on either side of the main longitudinal beam. Furthermore, because the battery housing of battery swapping electric vehicles requires frequent access, key installation requirements are ease of locking and unlocking, along with a secure connection.

[0003] However, the existing locking mechanism usually uses one driving member to drive one locking member, resulting in a set of locking mechanisms requiring multiple driving members, such as 4 to 8 driving members, etc., thereby increasing the structural complexity of the locking mechanism and occupying a larger space. Utility Model Content

[0004] In view of the problem that the existing locking device has a large number of driving parts, resulting in high structural complexity, the present utility model is proposed to provide a locking device and a vehicle that overcome the above problem or at least partially solve the above problem.

[0005] According to the first aspect of the present invention, a locking device is provided, comprising:

[0006] A guide seat, wherein the guide seat is provided with an accommodating cavity;

[0007] a linear drive, wherein the linear drive is fixed on the guide seat, and an output shaft of the linear drive extends into the accommodating cavity;

[0008] a crossbeam, the crossbeam passing through the accommodating cavity and being movably connected to the guide seat, wherein the crossbeam is fixedly connected to the output shaft of the linear actuator so that when the linear actuator performs telescopic movement, the crossbeam is driven to perform reciprocating linear motion;

[0009] Two connecting rod locking assemblies, the two connecting rod locking assemblies are respectively hinged to the two ends of the crossbeam and fixedly connected to the vehicle-mounted bottom bracket; wherein,

[0010] When the linear drive is extended, the crossbeam moves linearly away from the linear drive, and drives the two connecting rod locking assemblies to expand in a direction away from the crossbeam, so as to abut against the inner side of the battery box located on the vehicle-mounted base to form a lock.

[0011] An optional utility model content, the connecting rod locking assembly includes:

[0012] a locking link, one end of which is hinged to one end of the crossbeam;

[0013] a lock hook, the lock hook being hinged to the other end of the locking link and being used to abut against the battery box;

[0014] an articulated seat, the articulated seat being hinged to the locking hook and fixedly connected to the vehicle-mounted base;

[0015] When the crossbeam moves linearly away from the linear driver, the length of the locking link in the horizontal direction is extended to drive the locking hook to rotate in a direction away from the crossbeam and abut against the inner side of the battery box.

[0016] An optional utility model content, the locking hook includes a first end, a second end and a third end, the first end of the locking hook is hinged to the other end of the locking link, the second end of the locking hook is located below the first end and is hinged to the hinge seat, and the third end of the locking hook is used to abut against the battery box.

[0017] An optional utility model content, when the beam makes a linear motion close to the linear drive, the length of the locking link in the horizontal direction is shortened, driving the locking hook to rotate around the second end close to the beam to cancel the abutment force on the battery box.

[0018] An optional utility model content, the guide seat is also provided with a movable hole, the movable hole is a long waist hole extending along the movement direction of the linear drive, the locking device also includes a pin shaft, the pin shaft is set through the beam and the movable hole to form a movable connection between the beam and the guide seat.

[0019] An optional utility model content, the locking device also includes a roller, the roller is embedded in the movable hole, and is coaxially fixed with the pin shaft. When the linear drive drives the beam to perform linear motion, the roller rolls along the guide seat.

[0020] Based on the second aspect of the present invention, a vehicle is also provided, which includes a locking device, a vehicle-mounted base and a battery box as described in any one of the contents of the above utility model, the locking device is installed on the vehicle-mounted base, and the battery box is located on the vehicle-mounted base. When the linear drive is extended, the connecting rod locking assembly abuts against the inner side of the battery box to form a lock.

[0021] An optional utility model content, the battery box includes a box fixing seat and a locking pressure plate, the box fixing seat is provided with a locking cavity, the locking device is embedded in the locking cavity, and the locking pressure plate is fixed on the box fixing seat, and when the connecting rod locking assembly is expanded in the direction away from the crossbeam, it forms abutment with the locking pressure plate.

[0022] An optional utility model content, the vehicle also includes at least two battery guide blocks, at least two of the battery guide blocks are distributed around the circumference of the vehicle-mounted base to form an assembly guide for the battery box.

[0023] An optional utility model content, the vehicle further includes at least one guide pin, the guide pin is located on the end surface of the vehicle-mounted base close to the battery box; wherein,

[0024] The battery box is provided with a guide groove in a position area corresponding to the guide pin, and the guide pin and the guide groove are matched in shape to form a positioning for the battery box.

[0025] Compared to the prior art, the present invention includes a guide seat, a linear actuator, a crossbeam, and two connecting rod locking assemblies. The guide seat is provided with a receiving cavity. The linear actuator is fixed to the guide seat, and the output shaft of the linear actuator extends into the receiving cavity. The crossbeam passes through the receiving cavity and is movably connected to the guide seat. The crossbeam is fixedly connected to the output shaft of the linear actuator so that when the linear actuator performs telescopic movement, it drives the crossbeam to perform reciprocating linear motion. The two connecting rod locking assemblies are respectively hinged at the ends of the crossbeam and fixedly connected to the vehicle's onboard base. When the linear actuator is extended, the crossbeam performs linear movement away from the linear actuator, driving the two connecting rod locking assemblies to expand away from the crossbeam, thereby abutting and locking the inner side of the battery box located on the vehicle's onboard base. As a result, a single linear actuator can drive the two connecting rod locking assemblies in linkage, reducing the number of driving components and structural complexity of the locking device. This is conducive to the miniaturization of the locking device.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be construed as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components.

[0028] In the attached figure:

[0029] Figure 1 This is a first structural diagram of a locking device and a vehicle-mounted base provided by an embodiment of the present utility model when assembled;

[0030] Figure 2 This is a structural schematic diagram of a locking device provided by an embodiment of the present utility model in an unlocked state;

[0031] Figure 3 This is a second structural diagram of the assembly of a locking device and a vehicle-mounted base provided by an embodiment of the present utility model;

[0032] Figure 4 This is a structural schematic diagram of a locking device provided by an embodiment of the present utility model in a locked state;

[0033] Figure 5 This is a structural diagram of a battery box provided by an embodiment of the present utility model;

[0034] Figure 6 yes Figure 5 A schematic diagram of the structure at center A;

[0035] Figure 7 This is a schematic diagram of the structure of a battery box locked on the vehicle-mounted base provided by an embodiment of the present utility model;

[0036] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at B in the middle;

[0037] Figure markings: 1. Guide seat; 101. Accommodating cavity; 102. Moving hole; 2. Linear drive; 3. Crossbeam; 4. Connecting rod locking assembly; 41. Locking connecting rod; 42. Locking hook; 421. First end; 422. Second end; 423. Third end; 43. Articulated seat; 5. Pin shaft; 6. Roller; 7. Vehicle-mounted base; 8. Battery box; 81. Box fixing seat; 8101. Locking cavity; 82. Locking pressure plate; 9. Battery guide block; 10. Guide pin. DETAILED DESCRIPTION

[0038] The following describes exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0039] Currently, electric vehicles in my country primarily operate in two modes: charging and battery swapping. For battery swapping electric vehicles, the battery housing is primarily secured in two ways: behind the cab, or underneath the vehicle, on either side of the main longitudinal beam. Furthermore, because the battery housing of battery swapping electric vehicles requires frequent access, key installation requirements are ease of locking and unlocking, along with a secure connection.

[0040] However, the existing locking mechanism usually uses one driving member to drive one locking member, resulting in a set of locking mechanisms requiring multiple driving members, such as 4 to 8 driving members, etc., thereby increasing the structural complexity of the locking mechanism and occupying a larger space.

[0041] Based on the above technical problems, the present invention proposes an embodiment of the present invention. The embodiment of the present invention may include a guide base 1, a linear actuator 2, a crossbeam 3, and two connecting rod locking assemblies 4. The guide base 1 defines a receiving cavity 101. The linear actuator 2 is fixed to the guide base 1, and the output shaft of the linear actuator 2 extends into the receiving cavity 101. The crossbeam 3 extends through the receiving cavity 101 and is movably connected to the guide base 1. The crossbeam 3 is fixedly connected to the output shaft of the linear actuator 2 so that when the linear actuator 2 moves in a telescopic manner, it drives the crossbeam 3 in a reciprocating linear motion. The two connecting rod locking assemblies 4 are respectively hinged at opposite ends of the crossbeam 3 and fixedly connected to the vehicle's onboard base 7. When the linear actuator 2 extends, the crossbeam 3 moves linearly away from the linear actuator 2, driving the two connecting rod locking assemblies 4 to expand away from the crossbeam 3, thereby abutting against the inner side of the battery box 8 located on the vehicle's onboard base 7 to form a locking mechanism. Thus, one linear actuator 2 can drive the two connecting rod locking assemblies 4 to work in conjunction, reducing the number of driving components and structural complexity of the locking device, which is beneficial to the miniaturization of the locking device.

[0042] Reference Figure 1-8 The embodiment of the present utility model provides a locking device, which may include a guide seat 1, a linear drive 2, a crossbeam 3 and two connecting rod locking assemblies 4, wherein:

[0043] The guide seat 1 is provided with a receiving cavity 101, the linear drive 2 is fixed on the guide seat 1, and the output shaft of the linear drive 2 extends into the receiving cavity 101. The crossbeam 3 passes through the receiving cavity 101 and is movably connected to the guide seat 1, wherein the crossbeam 3 is fixedly connected to the output shaft of the linear drive 2 so that when the linear drive 2 performs telescopic movement, it drives the crossbeam 3 to perform reciprocating linear motion. The two connecting rod locking assemblies 4 are respectively hinged at the two ends of the crossbeam 3 and are fixedly connected to the vehicle-mounted base 7. When the linear drive 2 is extended, the crossbeam 3 performs linear movement away from the linear drive 2, and drives the two connecting rod locking assemblies 4 to expand in a direction away from the crossbeam 3, so as to abut against the inner side of the battery box 8 located on the vehicle-mounted base 7 to form a lock.

[0044] In this embodiment of the present invention, the accommodating cavity 101 is used to accommodate the crossbeam 3. The crossbeam 3 can be within the accommodating cavity 101, with both ends of the crossbeam 3 extending horizontally outside the accommodating cavity 101. The crossbeam 3 is movably connected to the guide seat 1. For example, the crossbeam 3 and the guide seat 1 can have a clearance fit, thereby enabling the crossbeam 3 to move up and down along the accommodating cavity 101 under the action of an external force.

[0045] The linear drive 2 is used to output linear motion. For example, the linear drive 2 may include but is not limited to linear actuators such as air cylinders, electric cylinders, and oil cylinders, and adopts the vehicle-mounted power supply in the vehicle, or hydraulic static pressure, etc. as the power source of the linear drive 2, which is not limited here. The linear drive 2 is fixed on the end face of the guide seat 1 away from the accommodating cavity 101, and the output shaft of the linear drive 2 passes through the guide seat 1, extends into the accommodating cavity 101, and is fixedly connected to the center of the beam 3. The output shaft of the linear drive 2 is arranged vertically upward. Thus, when the linear drive 2 is extended, the beam 3 is driven to perform a linear motion away from the linear drive 2 (or away from the guide seat 1) (also referred to as an ascending motion). When the linear drive 2 is retracted, the beam 3 is driven to perform a linear motion close to the linear drive 2 (or close to the guide seat 1) (also referred to as a descending motion).

[0046] The first link locking assembly 4 is hinged to one end of the crossbeam 3, and the second link locking assembly 4 is hinged to the other end of the crossbeam 3. Furthermore, the link locking assemblies 4 are fixedly connected to the vehicle's onboard support 7. Therefore, when the linear actuator 2 extends, it drives the crossbeam 3 upward, thereby changing the horizontal length of the link locking assemblies 4. This causes the two link locking assemblies 4 to expand away from the crossbeam 3, abutting against the two opposing inner sides of the battery box 8 on the onboard support 7 to form a locking mechanism.

[0047] When the linear actuator 2 retracts, it drives the crossbeam 3 downward, thereby pulling the connecting rod locking assembly 4 through the crossbeam 3 to move synchronously, and shortening the horizontal length of the connecting rod locking assembly 4. This cancels the abutment force exerted by the locking device on the inner side of the battery box 8, unlocking the battery box 8.

[0048] In summary, the locking device can drive the two connecting rod locking assemblies 4 in linkage via a linear actuator 2, thereby reducing the number of driving components and structural complexity of the locking device, facilitating miniaturization of the locking device, and reducing the production cost of the locking device.

[0049] An optional embodiment of the utility model, referring to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 As shown, the connecting rod locking assembly 4 may include a locking link 41, a locking hook 42 and a hinge seat 43. One end of the locking link 41 is hinged to one end of the crossbeam 3. The locking hook 42 is hinged to the other end of the locking link 41, and the locking hook 42 is used to abut against the battery box 8. The hinge seat 43 is hinged to the locking hook 42 and is fixedly connected to the vehicle-mounted base 7. When the crossbeam 3 makes a linear motion away from the linear drive 2, the length of the locking link 41 in the horizontal direction is extended to drive the locking hook 42 to rotate in the direction away from the crossbeam 3 and abut against the inner side of the battery box 8.

[0050] In the embodiment of the present invention, one end of the locking link 41 is hinged to the end of the crossbeam 3, and the other end of the locking link 41 is hinged to the locking hook 42. Therefore, when the crossbeam 3 is lifted or lowered, the end of the locking link 41 connected to the crossbeam 3 moves synchronously with the crossbeam 3. The locking hook 42 is hinged to the end of the locking link 41 away from the crossbeam 3, and the locking hook 42 is also hinged to the hinge seat 43. The hinge seat 43 is located below the locking hook 42 and below the locking link 41. The hinge seat 43 and the vehicle-mounted base 7 can be fixedly connected by welding, bolting, or the like. Thus, the locking hook 42 can be pulled by the locking link 41 to rotate around the hinge seat 43, so that the length of the locking link 41 in the horizontal direction can be extended to drive the locking hook 42 to rotate away from the crossbeam 3, and abut against the inner side of the battery box 8, thereby locking the battery box 8 by simultaneously abutting the two oppositely arranged inner sides.

[0051] Furthermore, when the crossbeam 3 is raised to its highest position, the crossbeam 3, the locking link 41, and the locking hook 42 can be aligned, that is, in a straight line. The lines connecting the hinge points of the locking hook 42 and the locking link 41, and the hinge points of the locking hook 42 and the hinge seat 43 are vertically arranged, thus reaching the dead center of the locking device (also known as the dead center of the locking). This allows the locking device to self-lock, and can only be unlocked when the linear actuator 2 retracts. This improves the locking stability and safety factor of the locking device, preventing problems such as failure of the locking structure due to frequent vibration.

[0052] An optional embodiment of the utility model, referring to Figure 2 and Figure 4 As shown, the locking hook 42 includes a first end 421, a second end 422 and a third end 423. The first end 421 of the locking hook 42 is hinged to the other end of the locking link 41, the second end 422 of the locking hook 42 is located below the first end 421 and is hinged to the hinge seat 43, and the third end 423 of the locking hook 42 is used to abut against the battery box 8.

[0053] In this embodiment of the present invention, the locking hook 42 may include a first end 421, a second end 422, and a third end 423. When the crossbeam 3 is raised to its highest position, the first end 421 is flush with the third end 423, and the line connecting the hinge point of the second end 422 and the hinge point of the third end 423 is vertical. At this point, the third end 423 abuts against the inner side of the battery case 8, thereby locking the battery case 8.

[0054] When the crossbeam 3 descends to its lowest position, the locking link 41 pulls the locking hook 42 to rotate toward the crossbeam 3. At this time, the height of the second end 422 is lower than the height of the first end 421, and the height of the first end 421 is lower than the height of the second end 422. The locking link 41 is tilted at this time. When the crossbeam 3 moves linearly toward the linear actuator 2, its length in the horizontal direction shortens, and it gradually tilts, driving the locking hook 42 to rotate about the second end 422 toward the crossbeam 3 (also known as an inward rotation), thereby removing the abutting force on the battery box 8.

[0055] An optional embodiment of the utility model, referring to Figure 2 and Figure 4 As shown, a movable hole 102 is also provided on the guide seat 1, and the movable hole 102 is a long waist hole extending along the movement direction of the linear drive 2. The locking device also includes a pin 5, and the pin 5 is provided through the beam 3 and the movable hole 102 to form a movable connection between the beam 3 and the guide seat 1.

[0056] In an embodiment of the present utility model, the movable hole 102 is used to limit the lifting stroke of the beam 3. For example, the highest point of the movable hole 102 in the vertical direction corresponds to the highest position of the movement of the beam 3. The lowest point of the movable hole 102 in the vertical direction corresponds to the lowest position of the movement of the beam 3. In order to improve the assembly convenience of the beam 3 and the guide seat 1. The movable connection between the beam 3 and the guide seat 1 can be achieved by the pin 5. The pin 5 passes through the beam 3 and the movable hole 102. One end of the pin 5 forms a limit with the outer end face of the guide seat 1, and the other end can be provided with an external thread. The threaded fit between the locking nut and the external thread forms a limit on the other end of the pin 5 to prevent it from axial slippage.

[0057] An optional embodiment of the utility model, the locking device also includes a roller 6, which is embedded in the movable hole 102 and fixed coaxially with the pin 5. When the linear drive 2 drives the beam 3 to perform linear motion, the roller 6 rolls along the guide seat 1.

[0058] In an embodiment of the present utility model, the roller 6 can be embedded in the movable hole 102. For example, the two ends of the roller 6 can respectively form a limit with the guide seat 1 and be sleeved on the pin 5. The roller 6 is coaxially fixed with the pin 5. It can be understood that the roller 6 is fixedly connected to the pin 5, and the central axis of the roller 6 coincides with the central axis of the pin 5. Thus, when the linear drive 2 drives the beam 3 to perform linear motion, the roller 6 can roll along the movable hole 102 on the guide seat 1. Therefore, during the lifting and lowering process of the beam 3, the sliding friction between the pin 5 and the guide seat 1 can be converted into rolling friction, thereby reducing the friction force of the locking device, reducing the wear between the pin 5 and the guide seat 1, and improving the service life and product performance of the locking device.

[0059] The present utility model also discloses a vehicle, Figure 7 The vehicle shown includes the locking device, vehicle-mounted base 7 and battery box 8 described in any one of the above-mentioned utility model contents. The locking device is installed on the vehicle-mounted base 7, and the battery box 8 is located on the vehicle-mounted base 7. When the linear drive 2 is extended, the connecting rod locking assembly 4 abuts against the inner side of the battery box 8 to form a lock.

[0060] In the embodiment of the present invention, the vehicle may be an electric heavy-duty truck, and the vehicle-mounted base 7 is used to provide assembly of the locking device and installation of the battery box 8. For example, the guide seat 1 may be fixed to the vehicle-mounted base 7 by welding, bolting, or the like, or the linear actuator 2 may be fixed to the vehicle-mounted base 7.

[0061] When the vehicle needs to replace the battery box 8, the linear drive 2 is activated to cause the output shaft of the linear drive 2 to retract. The pin 5 drives the crossbeam 3 to translate downward. This drives the locking hook 42 to rotate inward, releasing the lock on the battery box 8. The depleted battery box 8 is then lifted or removed, and the fully charged battery box 8 is installed on the vehicle-mounted base 7. The linear drive 2 is then controlled to operate, and the output shaft of the linear drive 2 extends, driving the locking hook 42 to rotate outward, thereby forming an abutment lock on the battery box 8.

[0062] An optional embodiment of the utility model, referring to Figure 5 、 Figure 6 as well as Figure 7As shown, the battery box 8 includes a box fixing seat 81 and a locking pressure plate 82. The box fixing seat 81 is provided with a locking cavity 8101. The locking device is embedded in the locking cavity 8101. In addition, the locking pressure plate 82 is fixed on the box fixing seat 81. When the connecting rod locking assembly 4 is expanded in the direction away from the beam 3, it forms abutment with the locking pressure plate 82.

[0063] In an embodiment of the utility model, the battery box 8 may include a battery body, a box fixing seat 81 and a locking pressure plate 82. The box fixing seat 81 is installed below the battery body, and a locking cavity 8101 is provided below the battery body, so that when the battery box 8 is placed on the vehicle-mounted base 7, the locking device can be embedded in the locking cavity 8101, so that the locking hook 42 can be rotated outward (rotated away from the crossbeam 3) in the locking cavity 8101, pressing the locking pressure plate 82 located on the box fixing seat 81, thereby locking the battery box 8.

[0064] An optional embodiment of the utility model, referring to Figure 1 and Figure 3 As shown, the vehicle further includes at least two battery guide blocks 9 , and the at least two battery guide blocks 9 are distributed around the vehicle-mounted base 7 to form an assembly guide for the battery box 8 .

[0065] In an embodiment of the present invention, the battery guide block 9 is used to guide the assembly of the battery box 8 when the battery box 8 is assembled into the vehicle-mounted base 7, so that the battery box 8 can be guided to the corresponding assembly area on the vehicle-mounted base 7 by the battery guide block 9. At least two battery guide blocks 9 are provided. At least two battery guide blocks 9 are distributed on the circumference of the vehicle-mounted base 7, so that when the battery box 8 is assembled into the vehicle-mounted base 7, the guide blocks come into contact with the cavity wall of the locking cavity 8101. For example, the battery guide block 9 and the vehicle-mounted base 7 can be fixed by welding, bolting, etc.

[0066] An optional embodiment of the utility model, referring to Figure 1 、 Figure 3 as well as Figure 7 As shown, the vehicle further includes at least one guide pin 10, which is located on the end surface of the vehicle base 7 near the battery box 8. The battery box 8 has a guide groove corresponding to the position of the guide pin 10. The guide pin 10 and the guide groove are shaped to form a positioning for the battery box 8.

[0067] In an embodiment of the present invention, the guide pin 10 can be located on the end face of the vehicle-mounted base 7 close to the battery case 8, and can be arranged in the middle area of the vehicle-mounted base 7. The battery case 8 is provided with a guide groove in the area corresponding to the position of the guide pin 10, and the guide pin 10 and the guide groove are matched in shape to form the precise positioning of the battery case 8 on the vehicle-mounted base 7. Those skilled in the art can determine the specific number of the guide pins 10 according to actual design requirements. For example, the guide pins 10 can be set to 1, 2, 3 and 4, etc., which are not limited here. The guide pins 10 can be fixed to the vehicle-mounted base 7 by welding.

[0068] In summary, the present invention discloses a locking device and a vehicle. The present invention may include a guide base 1, a linear actuator 2, a crossbeam 3, and two connecting rod locking assemblies 4. The guide base 1 defines a receiving cavity 101. The linear actuator 2 is fixed to the guide base 1, and the output shaft of the linear actuator 2 extends into the receiving cavity 101. The crossbeam 3 extends through the receiving cavity 101 and is movably connected to the guide base 1. The crossbeam 3 is fixedly connected to the output shaft of the linear actuator 2, so that when the linear actuator 2 extends, it drives the crossbeam 3 to reciprocate linearly. The two connecting rod locking assemblies 4 are hinged at each end of the crossbeam 3 and fixedly connected to the vehicle's base 7. When the linear actuator 2 extends, the crossbeam 3 moves linearly away from the linear actuator 2, driving the two connecting rod locking assemblies 4 to expand away from the crossbeam 3, thereby abutting against the inner side of the battery box 8 located on the vehicle base 7 to form a locking mechanism. Thus, a single linear actuator 2 can be used to drive the two connecting rod locking assemblies 4 in a coordinated manner, reducing the number of driving components and structural complexity of the locking device. This facilitates miniaturization of the locking device. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between the various embodiments can be referenced for clarity.

[0069] It is easy for those skilled in the art to think that any combination of the above embodiments is feasible, so any combination of the above embodiments is an implementation scheme of the present utility model. However, due to space limitations, this specification will not describe them in detail here.

[0070] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0071] Similarly, it should be understood that in order to streamline the present invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof.

[0072] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Claims

1. A locking device, characterized in that: The locking device comprises: A guide seat (1), wherein a receiving cavity (101) is provided on the guide seat (1); A linear drive (2), wherein the linear drive (2) is fixed on the guide seat (1), and an output shaft of the linear drive (2) extends into the accommodating cavity (101); A crossbeam (3), the crossbeam (3) passing through the accommodating cavity (101) and being movably connected to the guide seat (1), wherein the crossbeam (3) is fixedly connected to the output shaft of the linear drive (2), so that when the linear drive (2) performs telescopic movement, it drives the crossbeam (3) to perform reciprocating linear movement; Two connecting rod locking assemblies (4), the two connecting rod locking assemblies (4) are respectively hinged to the two ends of the crossbeam (3) and fixedly connected to the vehicle-mounted bottom bracket (7); wherein, When the linear drive (2) is extended, the crossbeam (3) performs a linear motion away from the linear drive (2), and drives the two connecting rod locking assemblies (4) to expand in a direction away from the crossbeam (3), so as to abut against the inner side of the battery box (8) located on the vehicle-mounted base (7) to form a locking mechanism.

2. The locking device according to claim 1, characterized in that: The connecting rod locking assembly (4) comprises: a locking link (41), one end of the locking link (41) being hinged to one end of the crossbeam (3); A locking hook (42), the locking hook (42) being hinged to the other end of the locking link (41), and the locking hook (42) being used to abut against the battery box (8); An articulated seat (43), the articulated seat (43) is hinged to the locking hook (42) and fixedly connected to the vehicle-mounted base (7); When the crossbeam (3) moves linearly away from the linear drive (2), the length of the locking link (41) in the horizontal direction is extended to drive the locking hook (42) to rotate in a direction away from the crossbeam (3) and abut against the inner side of the battery box (8).

3. The locking device according to claim 2, characterized in that: The locking hook (42) includes a first end (421), a second end (422) and a third end (423). The first end (421) of the locking hook (42) is hinged to the other end of the locking link (41). The second end (422) of the locking hook (42) is located below the first end (421) and is hinged to the hinge seat (43). The third end (423) of the locking hook (42) is used to abut against the battery box (8).

4. The locking device according to claim 3, characterized in that: When the crossbeam (3) performs a linear motion toward the linear drive (2), the length of the locking link (41) in the horizontal direction is shortened, driving the locking hook (42) to rotate around the second end (422) toward the crossbeam (3), thereby canceling the abutting force on the battery box (8).

5. The locking device according to claim 1, characterized in that: The guide seat (1) is also provided with a movable hole (102), which is a long waist hole extending along the movement direction of the linear drive (2). The locking device also includes a pin (5), which is provided through the crossbeam (3) and the movable hole (102) to form a movable connection between the crossbeam (3) and the guide seat (1).

6. The locking device according to claim 5, characterized in that: The locking device further comprises a roller (6), which is embedded in the movable hole (102) and fixed coaxially with the pin shaft (5). When the linear drive (2) drives the beam (3) to perform linear motion, the roller (6) rolls along the guide seat (1).

7. A vehicle, characterized in that: The vehicle comprises a locking device according to any one of claims 1 to 6, a vehicle-mounted base (7) and a battery box (8), wherein the locking device is mounted on the vehicle-mounted base (7), and the battery box (8) is located on the vehicle-mounted base (7), and when the linear drive (2) is extended, the connecting rod locking assembly (4) abuts against the inner side of the battery box (8) to form a locking mechanism.

8. The vehicle according to claim 7, characterized in that The battery box (8) includes a box fixing seat (81) and a locking pressure plate (82); the box fixing seat (81) is provided with a locking cavity (8101); the locking device is embedded in the locking cavity (8101); and the locking pressure plate (82) is fixed to the box fixing seat (81); when the connecting rod locking assembly (4) is unfolded in a direction away from the crossbeam (3), it forms abutment with the locking pressure plate (82).

9. The vehicle according to claim 7, characterized in that The vehicle further comprises at least two battery guide blocks (9), and the at least two battery guide blocks (9) are distributed on the peripheral side of the vehicle-mounted base (7) to form an assembly guide for the battery box (8).

10. The vehicle according to claim 7, characterized in that The vehicle further comprises at least one guide pin (10), wherein the guide pin (10) is located on the end surface of the vehicle-mounted base (7) close to the battery box (8); wherein, The battery box (8) is provided with a guide groove in a position area corresponding to the guide pin (10), and the guide pin (10) and the guide groove are matched in shape to form a positioning for the battery box (8).

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