Gasket assembly, locking structure and battery box assembly

Abstract

The present application belongs to the technical field of battery, and particularly relates to a gasket assembly, a locking structure and a battery box assembly. The gasket assembly comprises a first gasket and a second gasket; the first gasket has a first through hole; the second gasket has a second through hole; the first gasket and the second gasket are arranged in a stack; the first through hole and the second through hole are arranged opposite to each other; the first through hole and the second through hole are used for penetrating a rod; a surface of the first gasket facing the second gasket has a first matching surface; a surface of the second gasket facing the first gasket has a second matching surface; one of the first matching surface and the second matching surface is an inner concave surface, and the other is an outer convex surface; and the inner concave surface is positioned and matched with the outer convex surface. The gasket assembly has the ability of self-adaptive centering and compensation for misalignment, has better balanced load and damping effect, can effectively optimize pressure distribution and improve sealing performance.

Description

Technical Field

[0001] This invention belongs to the field of battery technology, specifically relating to a gasket assembly, a locking structure, and a battery box assembly. Background Technology

[0002] In the fields of mechanical engineering and industrial manufacturing, gaskets, as a fundamental and crucial mechanical component, function in three main ways: sealing, adjusting clearance, and distributing load. Firstly, in sealing applications, gaskets are widely used between two stationary connecting surfaces to prevent leakage of fluids (such as gases or liquids) or dust. Sealing gaskets are widely used in connections such as pipe flanges, engine cylinder heads and cylinder blocks, and valve covers. By selecting gaskets made of different materials (such as metals, rubber, asbestos, and graphite composites), they can withstand harsh conditions such as high temperatures, high pressures, and corrosion, forming a reliable sealing barrier. Secondly, in adjusting clearance and spacing, gaskets act as precision fine-tuning structures. In bearing installation, gear shaft positioning, or the assembly of large structural components, it is often necessary to precisely adjust the axial clearance or relative position between components using gasket sets of different thicknesses to achieve optimal transmission or fit. This application avoids complex and irreversible machining of the main components to correct minute tolerances, greatly improving assembly efficiency and adjustability. Finally, in terms of load distribution and preventing loosening, washers (especially spring washers and flat washers) are used between nuts and connectors. Flat washers can increase the bearing area, prevent soft material surfaces from being crushed, and make the bolt preload distribution more even; while spring washers can use their elastic deformation to provide a continuous rebound force for threaded connections, effectively resisting bolt loosening caused by vibration and thermal cycling, ensuring the safety and durability of the connection.

[0003] For example, in the field of heavy-duty truck battery swapping, when a battery swapping vehicle is driving, the battery frame may experience horizontal displacement or swaying relative to the battery swapping base. At this time, the battery frame may cause wear on the lock head used to fix the battery or generate torque on the lock rod, causing the lock rod to bend. At stress concentration points, there is a risk of deformation or even breakage. In this case, a gasket structure can be used to reduce the risk of stress concentration, but the existing flat gaskets still need to be improved in terms of anti-swaying ability.

[0004] In summary, although small, gaskets are the cornerstone of ensuring the sealing, precision, stability, and safety of mechanical connections. Current technologies for gaskets still need improvement in their self-aligning capabilities; therefore, there is an urgent need to provide a gasket assembly with strong self-aligning capabilities that can effectively alleviate stress concentration problems. Summary of the Invention

[0005] The purpose of this invention is to at least solve the problem of poor centering of traditional gaskets, which easily leads to stress concentration. This purpose is achieved through the following technical solution: A first aspect of the present invention provides a gasket assembly comprising: A first gasket, the first gasket having a first through hole; The second washer has a second through hole. The first washer and the second washer are stacked and arranged with the first through hole and the second through hole facing each other. The first through hole and the second through hole are used to pass through the rod. The surface of the first washer facing the second washer has a first mating surface, and the surface of the second washer facing the first washer has a second mating surface. One of the first mating surface and the second mating surface is a concave surface and the other is a convex surface. The concave surface and the convex surface are positioned and mated.

[0006] This technical solution provides a stacked gasket assembly with a second mating surface and a first mating surface that mate with each other. Compared with the regular-shaped single-piece gaskets in the technology, it has the following advantages: (1) It has the ability to self-align and compensate for misalignment. When using traditional flat gaskets, if the rods passing through the gaskets are not coaxial with the gaskets, it may lead to stress concentration or poor sealing. In this structure, the concave surface and the convex surface form a "spherical hinge" type connection interface. This allows for a small relative rotation between the upper and lower gaskets, thereby self-adapting and compensating for bolt misalignment, non-parallelism of the connecting parts surfaces, or installation misalignment errors. This self-adaptive ability ensures that the load can be transmitted more evenly through the gasket assembly, greatly reducing the risk of rod deformation or local crushing of the gasket assembly caused by installation stress concentration. (2) It has better load balancing and vibration reduction effects. When subjected to dynamic loads or vibrations, traditional rigid gaskets are prone to failure due to fretting wear. The arc-shaped contact surface provided by this technical solution allows for small elastic deformation, which can effectively absorb and disperse vibration energy, suppress high-frequency fretting, and through its self-adjusting characteristics, can redistribute the fluctuating load more evenly, thereby significantly improving the vibration resistance and fatigue life of the connection, and is particularly suitable for mechanical environments with severe vibration. (3) Pressure distribution optimization and sealing performance improvement. For applications requiring sealing, the combination of the concave surface and the convex surface can effectively rotate the axial force into the surface pressure of the sealing element, thereby pressing the sealing material faster and more effectively, thus achieving more reliable sealing performance. In summary, the gasket assembly provided by this technical solution solves the problems of installation alignment, vibration loosening and poor sealing without significantly increasing costs, and can be widely used in aerospace, precision machinery, high-pressure sealing and other fields with high requirements for connection reliability.

[0007] In addition, the gasket assembly of the present invention may also have the following additional technical features: In some embodiments of the present invention, the inner diameter of the first gasket is larger than the inner diameter of the second gasket.

[0008] In a second aspect of the invention, a locking structure is provided, which includes the gasket assembly in the above embodiments, and the locking structure further includes a connecting portion, a locking rod, a first sleeve, a chuck, and a first elastic member; The locking rod includes a lock head and a locking rod connected to each other. The lock head is connected to the top of the locking rod. The locking rod is rotatably inserted through the first sleeve. The rotation of the locking rod can drive the lock head to rotate to the locked position or the unlocked position. The locking rod passes through the first through hole and the second through hole. A connecting plate is connected to the top inner side of the first sleeve. The top of the gasket assembly abuts against the connecting plate. The connecting plate, the first elastic element, and the chuck are sleeved on the locking rod. The first elastic element is disposed at the bottom of the gasket assembly and abuts against the chuck. The chuck can move along the axial direction of the locking rod. An abutting part is provided at the lower end of the first sleeve. The abutting part is used to abut against the bottom of the chuck. In some embodiments of the present invention, the outer periphery of the chuck is provided with a locking positioning groove and an unlocking positioning groove, and the first sleeve is connected to a positioning part; When the chuck moves axially along the locking rod and away from the positioning part, the lock head can rotate to the locked position or the unlocked position; When the positioning part is located in the locking positioning groove, the lock head is in the locking position; When the positioning part is located in the unlocking positioning slot, the lock head is in the unlocked position.

[0009] In some embodiments of the present invention, the outer periphery of the chuck is provided with a circumferential limiting groove, the circumferential limiting groove having locking limiting walls and unlocking limiting walls distributed circumferentially, and the first sleeve is connected to a limiting part. When the limiting part and the locking limiting wall abut against each other, the positioning part and the locking positioning groove are directly opposite each other. When the limiting part and the unlocking limiting wall abut against each other, the positioning part and the unlocking positioning groove are aligned.

[0010] In some embodiments of the present invention, the locking structure further includes a locking nut, which is sleeved on the locking rod and threadedly connected to the locking rod. The locking nut is located between the second washer and the first elastic member.

[0011] In some embodiments of the present invention, the locking structure further includes a fixing pin, and the first sleeve has an clearance hole, through which the fixing pin passes through the clearance hole into the locking nut and the locking rod.

[0012] In some embodiments of the present invention, the locking structure further includes a second sleeve and a centering component disposed within the second sleeve, the second sleeve being connected to the top of the connecting plate, and the locking rod passing through the centering component.

[0013] In some embodiments of the present invention, the bottom of the locking rod is provided with an operating part, the radial cross-section of the operating part is non-circular, and the chuck is sleeved on the operating part.

[0014] In a third aspect of the invention, a battery box assembly is provided, which includes the locking structure described in the above embodiments. The battery box assembly further includes a base structure and a battery frame, the connecting portion is connected to the battery frame, and the first sleeve is connected to the base structure. Attached Figure Description

[0015] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the gasket assembly according to an embodiment of the present invention is shown. Figure 2 An exploded view schematically illustrates a gasket assembly according to an embodiment of the present invention; Figure 3 An exploded view of a partial structure of the locking structure according to an embodiment of the present invention is shown schematically. Figure 4 A partial structural cross-section of the locking structure according to an embodiment of the present invention is schematically shown. Figure 1 ; Figure 5 A partial structural cross-section of the locking structure according to an embodiment of the present invention is schematically shown. Figure 2 ; Figure 6 An exploded view of a battery pack assembly according to an embodiment of the present invention is shown schematically. Figure 7 A schematic diagram of the battery box assembly according to an embodiment of the present invention is shown.

[0016] The labels in the attached diagram are as follows: 1000 Locking structure; 1100 Gasket assembly; 1110 First gasket; 1111 First mating surface; 1112 First through hole; 1120 Second gasket; 1121 Second mating surface; 1122 Second through hole; 1200 Connecting part; 1210 Connecting hole; 1300 Locking rod; 1310 Lock head; 1320 Locking rod; 1330 Operating part; 1410 First sleeve; 1411 Abutting part; 1412 Positioning part ; 1413, Limiting part; 1414, Clearance hole; 1420, Connecting plate; 1430, Second sleeve; 1500, Chuck; 1510, Locking positioning groove; 1520, Unlocking positioning groove; 1530, Circumferential limiting groove; 1531, Locking limiting wall; 1532, Unlocking limiting wall; 1600, First elastic element; 1700, Locking nut; 1800, Fixing pin; 1900, Centering assembly; 1910, Second elastic element; 1920, Fixing ring; 2000, Base support structure; 2100, Base bracket; 2200, Reinforcing section; 2300, Positioning post; 2400, Base beam; 2500, Buffer pad; 3000, Battery frame; 3100, Frame body; 3200, Positioning block. Detailed Implementation

[0017] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0018] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0019] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0020] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0021] Figure 1 A schematic diagram of the structure of a gasket assembly 1100 according to an embodiment of the present invention is shown. Figure 2 An exploded view schematically illustrating a gasket assembly 1100 according to an embodiment of the present invention is shown. Figure 1 and Figure 2 As shown, the present invention proposes a gasket assembly 1100, including a first gasket 1110 and a second gasket 1120; the first gasket 1110 has a first through hole 1112; the second gasket 1120 has a second through hole 1122, the first through hole 1112 and the second through hole 1122 are used for inserting rods, the surface of the first gasket 1110 facing the second gasket 1120 has a first mating surface 1111, the surface of the second gasket 1120 facing the first gasket 1110 has a second mating surface 1121, one of the first mating surface 1111 and the other of the second mating surface 1121 is a concave surface and the other is a convex surface, the concave surface and the convex surface are positioned and mated.

[0022] This technical solution provides a stacked gasket assembly 1100 with a second mating surface 1121 and a first mating surface 1111 mating with each other. Compared with the regular-shaped single-piece gasket in the technology, it has the following advantages: (1) It has the ability to self-align and compensate for misalignment. When using traditional flat gaskets, if the rods passing through the gaskets are not coaxial with the gaskets, it may lead to stress concentration or poor sealing. In this structure, the concave surface and the convex surface form a "spherical hinge" type connection interface. This allows for a small relative rotation between the upper and lower gaskets, thereby self-adapting and compensating for bolt misalignment, non-parallelism of the connecting parts surfaces, or installation misalignment errors. This self-adaptive ability ensures that the load can be transmitted more evenly through the gasket assembly 1100, greatly reducing the risk of rod deformation or local crushing of the gasket assembly 1100 due to installation stress concentration. (2) It has better load balancing and vibration reduction effects. When subjected to dynamic loads or vibrations, traditional rigid gaskets are prone to failure due to fretting wear. The arc-shaped contact surface provided by this technical solution allows for small elastic deformation, which can effectively absorb and disperse vibration energy, suppress high-frequency fretting, and through its self-adjusting characteristics, can redistribute the fluctuating load more evenly, thereby significantly improving the vibration resistance and fatigue life of the connection, and is particularly suitable for mechanical environments with severe vibration. (3) Optimize pressure distribution and improve sealing performance. For applications requiring sealing, the combination of the concave surface and the convex surface can effectively rotate the axial force into the surface pressure of the sealing element, thereby pressing the sealing material faster and more effectively, thus achieving more reliable sealing performance. In summary, the gasket assembly 1100 provided by this technical solution solves the problems of installation alignment, vibration loosening and poor sealing without significantly increasing costs, and can be widely used in aerospace, precision machinery, high-pressure sealing and other fields with high requirements for connection reliability.

[0023] It should be noted that, in this technical solution, the convex surface refers to a structural form that protrudes from the outer periphery towards the center. For example, the convex surface can be a conical surface or an arc-shaped surface. Correspondingly, the shape of the concave surface is configured to match the shape of the convex surface.

[0024] Furthermore, the inner diameter of the first gasket 1110 is larger than the inner diameter of the second gasket 1120.

[0025] Understandably, when the first mating surface 1111 of the first washer 1110 and the second mating surface 1121 of the second washer 1120 rotate relative to each other for self-alignment, the edge of its inner hole will slightly offset relative to the inserted rod. If the inner diameters of the two washers are the same, the edge of the inner hole of the first washer 1110 may interfere with, scrape, or even jam with the rod during the alignment process. Setting the inner diameter of the first washer 1110 to be larger provides clearance for this micro-alignment, ensuring smooth movement between the curved surfaces, thereby enabling the alignment function to be reliably realized.

[0026] Furthermore, Figure 3 An exploded partial view of the locking structure 1000 according to an embodiment of the present invention is shown schematically. Figure 4 A partial cross-sectional view of the locking structure 1000 according to an embodiment of the present invention is shown schematically. See also Figure 3 and Figure 4 This technical solution also provides a locking structure 1000, including the aforementioned gasket assembly 1100. The locking structure 1000 further includes a connecting part 1200, a locking rod 1300, a first sleeve 1410, a chuck 1500, and a first elastic element 1600. The locking rod 1300 includes a lock head 1310 and a locking bar 1320 connected to each other. The lock head 1310 is connected to the top of the locking bar 1320. The locking bar 1320 is rotatably inserted through the first sleeve 1410. Rotation of the locking bar 1320 can drive the lock head 1310 to rotate to the locked position or the unlocked position. The locking bar 1320 passes through the first through hole 1112 and the second through hole 1122. A connecting plate 1420 is connected to the inner top of the first sleeve 1410. The top of the pad assembly 1100 abuts against the connecting plate 1420. The connecting plate 1420, the first elastic element 1600, and the chuck 1500 are sleeved on the locking rod 1320. The first elastic element 1600 is disposed at the bottom of the pad assembly 1100 and abuts against the chuck 1500. The chuck 1500 can move axially along the locking rod 1320. The lower end of the first sleeve 1410 is provided with an abutment part 1411, which is used to abut against the bottom of the chuck 1500. The connecting part 1200 is provided with a connecting hole 1210. When the lock head 1310 is rotated to the unlock position, the lock head 1310 can pass through the connecting hole 1210. When the lock head 1310 is rotated to the locking position, the lock head 1310 is pressed against the end face of the connecting part 1200.

[0027] When using the locking structure 1000 provided by this technical solution, before assembly, first ensure that the locking rod 1300 is in the unlocked position. Then, align the connecting hole 1210 with the lock head 1310, so that the locking rod 1320 passes through the connecting hole 1210. Subsequently, rotate the locking rod 1300 to the locked position. Finally, release the chuck 1500, and the first elastic element 1600 rebounds and pushes the chuck 1500 down to abut against the abutment part 1411, completing the locking. When unlocking is required, move the chuck 1500 upward. At this time, the first elastic element 1600 is compressed. Rotate the locking rod 1300 to the unlocked position, remove the connecting part 1200, and then release the chuck 1500. The first elastic element 1600 rebounds and pushes the chuck 1500 down to abut against the abutment part 1411. Therefore, this technical solution adopts a mechanical rotation locking method of "first sleeve 1410 - locking rod 1300". Through a simple rotational action, the switching between "unlocking" and "locking" can be achieved, greatly facilitating the assembly of the structures to be connected. This locking structure 1000 achieves a unity of rigid connection and flexible compensation, possessing good connection reliability and vibration reduction effect. Therefore, it can be used for the connection between the battery frame 3000 and the base support structure 2000. Specifically, the connecting part 1200 is connected to the battery frame 3000, and the first sleeve 1410 is connected to the base support structure 2000. It can also be applied to automated production lines or industrial robots. For example, the connecting part 1200 is connected to an end effector that needs frequent replacement (such as clamps with different functions, welding torches, vision sensors, etc.), and the first sleeve 1410 is connected to the work platform. Of course, it can also be used for other connection structures that require frequent disassembly, especially suitable for connection structures with manufacturing tolerances, vibration environments, or stringent requirements for connection safety.

[0028] In this technical solution, the lock head 1310 is a strip-shaped block structure, and the connecting hole 1210 is an oblong hole. When the length direction of the lock head 1310 is consistent with the length direction of the connecting hole 1210, the lock head 1310 can pass through the connecting hole 1210. When the lock head 1310 is rotated until the length direction of the lock head 1310 and the length direction of the connecting hole 1210 form a certain angle, the lock head 1310 can prevent the connecting part 1200 from disengaging from the locking rod 1300. In this embodiment, the connecting part 1200 is a rectangular plate structure. In other embodiments, the structure of the connecting part 1200, the structure of the lock head 1310, and the shape of the connecting hole 1210 can be set according to the usage requirements, and are not specifically limited here.

[0029] Furthermore, the outer periphery of the chuck 1500 is provided with a locking positioning groove 1510 and an unlocking positioning groove 1520, and the first sleeve 1410 is connected to a positioning part 1412; when the chuck 1500 moves axially along the locking rod 1320 and away from the positioning part 1412, the lock head 1310 can rotate to the locking position or the unlocking position; when the positioning part 1412 is located in the locking positioning groove 1510, the lock head 1310 is in the locking position; when the positioning part 1412 is located in the unlocking positioning groove 1520, the lock head 1310 is in the unlocking position.

[0030] Understandably, the lock head 1310 can be fixed in the locked or unlocked position by the cooperation of the chuck 1500 and the positioning part 1412. For example, when it is necessary to rotate the lock head 1310 from the locked position to the unlocked position, the chuck 1500 is first moved upward. At this time, the locking positioning groove 1510 is away from the positioning part 1412. By rotating the locking rod 1300, the chuck 1500 can be rotated. When the unlocking positioning groove 1520 is aligned with the positioning part 1412, the chuck 1500 moves downward, so that the positioning part 1412 is inserted into the unlocking positioning groove 1520, thereby fixing the lock head 1310 in the unlocked position, so as to install or remove the battery frame 3000. Similarly, when it is necessary to rotate the chuck 1500 from the unlocked position to the locked position, the chuck 1500 is first moved upward. At this time, the unlocking positioning groove 1520 moves away from the positioning part 1412. By rotating the locking rod 1300, the chuck 1500 can be rotated. When it is rotated until the locking positioning groove 1510 is aligned with the positioning part 1412, the chuck 1500 moves downward, so that the positioning part 1412 is inserted into the locking positioning groove 1510, thereby fixing the lock head 1310 in the locked position, thus locking the battery frame 3000 and the base bracket 2100. Optionally, the positioning part 1412 is a second mating surface 1121 that protrudes radially along the first sleeve 1410. The positioning groove is a first mating surface with a U-shaped cross-section along the horizontal direction.

[0031] Furthermore, a circumferential limiting groove 1530 is provided on the outer periphery of the chuck 1500. The circumferential limiting groove 1530 has locking limiting walls 1531 and unlocking limiting walls 1532 distributed at intervals along its circumference. The first sleeve 1410 is connected to a limiting part 1413. When the limiting part 1413 and the locking limiting wall 1531 abut, the positioning part 1412 and the locking positioning groove 1510 are facing each other. When the limiting part 1413 and the unlocking limiting wall 1532 abut, the positioning part 1412 and the unlocking positioning groove 1520 are facing each other.

[0032] Precise positioning is achieved through the coordinated arrangement of the circumferential limiting groove 1530 and the limiting part 1413. The circumferential limiting groove 1530 precisely limits the rotation angle of the locking rod 1300 to two key working positions. When the limiting part 1413 abuts against the locking limiting wall 1531, it ensures that the lock head 1310 rotates exactly to the locking position. At this time, the positioning part 1412 is necessarily aligned with the locking positioning groove 1510, preparing for the subsequent locking action. Conversely, when it abuts against the unlocking limiting wall 1532, it ensures that the locking rod 1300 is fully in the unlocked position. This eliminates the risk of unreliable locking or inability to unlock due to insufficient rotation or overshoot, providing clear physical tactile and positional feedback, allowing the operator to clearly perceive the completion of the state switch. In addition, integrating the positioning and limiting functions into the outer periphery of the chuck 1500 and the first sleeve 1410 eliminates the need for additional, complex sensors or positioning mechanisms. This makes the entire locking structure 1000 very compact and highly integrated, saving installation space while reducing manufacturing costs and potential failure points. In this embodiment, the included angle between the locking limiting wall 1531 and the unlocking limiting wall 1532 is 90°. In other embodiments, the included angle between the locking limiting wall 1531 and the unlocking limiting wall 1532 can be 30°, 45°, or 60°, etc. Correspondingly, the positions of the locking positioning groove 1510 and the unlocking positioning groove 1520 are set according to the included angle between the locking limiting wall 1531 and the unlocking limiting wall 1532. It can be understood that in this technical solution, the rotation direction of the locking rod 1320 is opposite when performing unlocking and locking operations. That is, when unlocking, the locking rod 1320 is rotated in the forward direction; when locking, the locking rod 1320 is rotated in the reverse direction. Here, the forward direction can be counterclockwise or clockwise, and the reverse direction is opposite to the forward direction.

[0033] Furthermore, the locking structure 1000 also includes a locking nut 1700, which is sleeved on the locking rod 1320 and threadedly connected to the locking rod 1320. The locking nut 1700 is located between the second washer 1120 and the first elastic member 1600.

[0034] The locking nut 1700, through its threaded connection with the locking rod 1320, compresses the entire structure fitted onto the locking rod 1320 into a single unit. This tightening process generates an initial pre-compression on the first elastic element 1600, thereby storing elastic potential energy. This pre-tightening force ensures that the chuck 1500 can stably engage with the abutment portion 1411 when no external force is applied, thus guaranteeing that the locking structure 1000 is compact and maintains a consistent initial state.

[0035] Furthermore, the locking structure 1000 also includes a fixing pin 1800, and the first sleeve 1410 has a clearance hole 1414. The fixing pin 1800 passes through the clearance hole 1414 and is inserted into the locking nut 1700 and the locking rod 1320.

[0036] The fixing pin 1800 prevents the locking nut 1700 and locking rod 1320 from loosening, further increasing the stability of the structure and effectively extending its service life. Optionally, the clearance hole 1414 can be an oblong hole or a circular hole, depending on the application requirements.

[0037] Furthermore, the locking structure 1000 also includes a second sleeve 1430 and a centering component 1900 disposed within the second sleeve 1430. The second sleeve 1430 is connected to the top of the connecting plate 1420, and the locking rod 1320 passes through the centering component 1900. In this embodiment, the centering component 1900 includes a second elastic member 1910 and a fixing ring 1920. The second elastic member 1910 and the fixing ring 1920 are located inside the second sleeve 1430. The second sleeve 1430 is connected to the top of the connecting plate 1420. The locking rod 1320 passes through the second sleeve 1430, and the fixing ring 1920 is fixedly sleeved on the locking rod 1320. The second elastic member 1910 is sleeved on the locking rod 1320, with the top of the second elastic member 1910 abutting against the fixing ring 1920 and the bottom of the second elastic member 1910 abutting against the connecting plate 1420.

[0038] When the locking lever 1300 is subjected to a downward pressing operation or impact, the second elastic element 1910 can convert the rigid, impactful downward pressure into a controllable, flexible energy storage process, providing the necessary stroke and cushioning for the movement of the chuck 1500. Furthermore, the first elastic element 1600 is mainly responsible for the reset of the chuck 1500 relative to the first sleeve 1410, while the second elastic element 1910 ensures the overall reset of components such as the gasket assembly 1100 and the locking lever 1320. When the downward pressing force is released, the elastic potential energy stored in the second elastic element 1910 pushes the retaining ring 1920 upward, thereby causing the entire locking lever 1320 and related components to smoothly and automatically reset to their initial height. Therefore, the second elastic element 1910 ensures that the mechanism returns to its precise initial position after each operation, preparing for the next locking or unlocking action. In addition, the second elastic element 1910 ensures that the locking lever 1300 moves axially along the first sleeve 1410, reducing the probability of its deviation.

[0039] See Figure 5 In some other embodiments, the centering component 1900 also uses a flexible sleeve instead of the second elastic element 1910 and the fixing ring 1920. For example, a flexible polyurethane sleeve can be used to achieve the same guiding and centering effect for the locking rod 1320, which will not be described in detail here.

[0040] Furthermore, the bottom of the locking lever 1320 is provided with an operating part 1330, the radial cross-section of the operating part 1330 is non-circular, and the chuck 1500 is sleeved on the operating part 1330.

[0041] Since the radial cross-sectional shape of the operating part 1330 is non-circular, the locking lever 1300 can be rotated by rotating the operating part 1330. Optionally, the cross-sectional shape of the operating part 1330 is regular hexagonal. In actual operation, the locking lever 1300 is rotated by selecting a suitable type of external hex wrench to hold the operating part 1330. In other embodiments, the operating part 1330 may also have other structural shapes and be rotated in conjunction with other operating tools.

[0042] Furthermore, Figure 6 An exploded view of a battery box assembly according to an embodiment of the present invention is shown schematically. Figure 7 A schematic diagram of the structure of a battery box assembly according to an embodiment of the present invention is shown. This technical solution also provides a battery box assembly including the aforementioned locking structure 1000. The battery box assembly further includes a base structure 2000 and a battery frame 3000, a connecting portion 1200 connected to the battery frame 3000, and a first sleeve 1410 connected to the base structure 2000.

[0043] Therefore, this technical solution employs a mechanical rotation locking method, allowing for easy switching between "unlocking" and "locking" through a simple rotational motion, greatly simplifying the installation of the battery housing 3000. Furthermore, compared to existing technologies with external pneumatic or electric drive systems, this solution significantly simplifies the overall structure, thereby substantially reducing manufacturing costs. Secondly, the locking structure 1000 requires no energy consumption, making it particularly suitable for energy-sensitive applications. Thirdly, the constraint of the first sleeve 1410 on the locking rod 1320 enhances its resistance to vibration and impact, ensuring a stable and durable locked state even under harsh conditions. Finally, this structure eliminates the need for complex circuit or pneumatic system debugging and maintenance, significantly improving reliability and reducing subsequent maintenance costs. In summary, the battery box assembly in this technical solution offers advantages over existing technologies, including simple structure, convenient operation, high reliability, and low production and maintenance costs.

[0044] Optionally, the base support structure 2000 includes a base bracket 2100 and a base beam 2400. The base beam 2400 is connected to the bottom of the base bracket 2100, and the base bracket 2100 is fixedly connected to the vehicle body via the base beam 2400. A reinforcing part 2200 is connected to the side of the base beam 2400, and a first sleeve 1410 is connected to the reinforcing part 2200. Optionally, the reinforcing part 2200 has a block structure. Understandably, the setting of the reinforcing part 2200 increases the structural strength of the base support structure 2000. Optionally, the battery frame 3000 includes a frame body 3100 and a positioning block 3200. The positioning block 3200 is provided with a positioning hole. Correspondingly, the base bracket 2100 is provided with a positioning post 2300 extending in the vertical direction. When installing the battery frame 3000 and the base bracket 2100, the positioning hole is fitted into the positioning post 2300 to achieve positioning. Understandably, the battery frame 3000 and the base bracket 2100 can be quickly aligned through the insertion of the positioning post 2300 and the positioning block 3200. Preferably, the top of the positioning post 2300 can be tapered to further increase installation convenience. Preferably, the height of the top of the positioning post 2300 is higher than the height of the top of the lock head 1310, thereby better guiding the installation. Optionally, a buffer pad 2500 is provided on the edge end face of the base bracket 2100. When the battery frame 3000 and the base bracket 2100 are installed in place, the bottom of the battery frame 3000 contacts the buffer pad 2500, thereby preventing hard contact between the battery frame 3000 and the base bracket 2100 and effectively reducing vibration and wear.

[0045] The battery pack assembly provided in this technical solution is installed and removed as follows: Before installing the battery frame 3000 and the base structure 2000, check that the locking lever 1300 is in the unlocked position. After confirming that the locking lever 1300 is in the unlocked position, align the positioning block 3200 on the battery frame 3000 with the positioning post 2300 in the base structure 2000 so that the positioning post 2300 can be inserted into the positioning hole. Then continue to lower the battery frame 3000, and the connecting hole 1210 will be fitted onto the locking lever 1320 through the lock head 1310. Subsequently, the operating part 1330 is held in place by an external hex wrench, while the chuck 1500 is pushed upwards (the first elastic element 1600 is compressed). After the unlocking positioning groove 1520 disengages from the positioning part 1412, the operating part 1330 is rotated forward, causing the lock head 1310 to rotate forward. When the locking limit wall 1531 and the limit part 1413 are felt to abut, the locking rod 1300 rotates into place, and the lock head 1310 and the connecting part 1200 are locked. At this time, the operating part 1330 and the chuck 1500 are released, the first elastic element 1600 rebounds, and the chuck 1500 automatically falls down to the initial height where it abuts the abutment part 1411, and the positioning part 1412 enters the locking positioning groove 1510.

[0046] When it is necessary to disassemble the battery frame 3000 and the base structure 2000, the operating part 1330 is clamped by an external hex wrench, and the chuck 1500 is moved upward by pressing against it (the first elastic element 1600 is compressed). After the locking positioning groove 1510 is disengaged from the positioning part 1412, the operating part 1330 is rotated in the opposite direction, so that the lock head 1310 rotates in the opposite direction. When the unlocking limit wall 1532 and the limit part 1413 are felt to abut, the locking rod 1300 rotates into place, and the length direction of the lock head 1310 is consistent with the length direction of the connecting hole 1210. At this time, the operating part 1330 and the chuck 1500 are released, the first elastic element 1600 rebounds, the chuck 1500 automatically falls down to the initial height of abutting the abutting part 1411, and the positioning part 1412 enters the unlocking positioning groove 1520. At this point, the battery frame 3000 can be removed from the base structure 2000.

[0047] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gasket assembly, characterized in that, include: The first gasket (1110) has a first through hole (1112). The second gasket (1120) has a second through hole (1122). The first gasket (1110) and the second gasket (1120) are stacked. The first through hole (1112) and the second through hole (1122) are facing each other. The first through hole (1112) and the second through hole (1122) are used to pass through the rod. The surface of the first gasket (1110) facing the second gasket (1120) has a first mating surface (1111), and the surface of the second gasket (1120) facing the first gasket (1110) has a second mating surface (1121). One of the first mating surface (1111) and the second mating surface (1121) is a concave surface and the other is a convex surface. The concave surface and the convex surface are positioned and engaged.

2. The gasket assembly according to claim 1, characterized in that, The inner diameter of the first gasket (1110) is larger than the inner diameter of the second gasket (1120).

3. A locking structure, characterized in that, Including the gasket assembly (1100) according to claim 1 or 2, the locking structure (1000) further includes a connecting portion (1200), a locking rod (1300), a first sleeve (1410), a chuck (1500), and a first elastic element (1600). The locking lever (1300) includes a lock head (1310) and a locking rod (1320) connected to each other. The lock head (1310) is connected to the top of the locking rod (1320). The locking rod (1320) is rotatably inserted through the first sleeve (1410). The rotation of the locking rod (1320) can drive the lock head (1310) to rotate to the locked position or the unlocked position. The locking rod (1320) passes through the first through hole (1112) and the second through hole (1122). A connecting plate (1420) is connected to the inner top of the first sleeve (1410). The top of the gasket assembly (1100) abuts against the connecting plate (1420). The connecting plate (1420), the first elastic element (1600), and the chuck (1500) are sleeved on the locking rod (1320). The first elastic element (1600) is disposed at the bottom of the gasket assembly (1100) and abuts against the chuck (1500). The chuck (1500) can move along the axial direction of the locking rod (1320). The lower end of the first sleeve (1410) is provided with an abutment part (1411), which is used to abut against the bottom of the chuck (1500). The connecting part (1200) is provided with a connecting hole (1210). When the lock head (1310) is rotated to the unlock position, the lock head (1310) can pass through the connecting hole (1210). When the lock head (1310) is rotated to the locking position, the lock head (1310) is pressed against the end face of the connecting part (1200).

4. The locking structure according to claim 3, characterized in that, The outer periphery of the chuck (1500) is provided with a locking positioning groove (1510) and an unlocking positioning groove (1520), and the first sleeve (1410) is connected to a positioning part (1412). When the chuck (1500) moves axially along the locking bar (1320) and away from the positioning part (1412), the lock head (1310) can rotate to the locked position or the unlocked position; When the positioning part (1412) is located in the locking positioning groove (1510), the lock head (1310) is in the locking position; When the positioning part (1412) is located in the unlocking positioning groove (1520), the lock head (1310) is in the unlocked position.

5. The locking structure according to claim 4, characterized in that, The chuck (1500) is provided with a circumferential limiting groove (1530) on its outer periphery. The circumferential limiting groove (1530) has locking limiting walls (1531) and unlocking limiting walls (1532) distributed at intervals along its circumference. The first sleeve (1410) is connected to a limiting part (1413). When the limiting part (1413) and the locking limiting wall (1531) abut, the positioning part (1412) and the locking positioning groove (1510) are facing each other; When the limiting part (1413) and the unlocking limiting wall (1532) abut, the positioning part (1412) and the unlocking positioning groove (1520) are facing each other.

6. The locking structure according to claim 3, characterized in that, The locking structure (1000) further includes a locking nut (1700), which is sleeved on the locking rod (1320) and threadedly connected to the locking rod (1320). The locking nut (1700) is located between the second washer (1120) and the first elastic member (1600).

7. The locking structure according to claim 6, characterized in that, The locking structure (1000) further includes a fixing pin (1800), and the first sleeve (1410) has a clearance hole (1414). The fixing pin (1800) passes through the clearance hole (1414) and is inserted into the locking nut (1700) and the locking rod (1320).

8. The locking structure according to claim 3, characterized in that, The locking structure (1000) further includes a second sleeve (1430) and a centering component (1900) disposed in the second sleeve (1430). The second sleeve (1430) is connected to the top of the connecting plate (1420), and the locking rod (1320) passes through the centering component (1900).

9. The locking structure according to claim 3, characterized in that, The bottom of the locking bar (1320) is provided with an operating part (1330), the radial cross-section of the operating part (1330) is non-circular, and the chuck (1500) is sleeved on the operating part (1330).

10. A battery box assembly, characterized in that, Including the locking structure (1000) according to any one of claims 3-9, the battery box assembly further includes a base structure (2000) and a battery frame (3000), the connecting part (1200) is connected to the battery frame (3000), and the first sleeve (1410) is connected to the base structure (2000).

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