A self-locking fastener for a battery pack

Abstract

This utility model discloses a self-locking fastener for a battery pack, including a packaging component, a coating component, a locking component, and a fastening component. The coating component is fixedly connected inside the packaging component, the locking component is installed inside the packaging component, and the fastening component is installed inside the packaging component. An expansion block is provided. When the battery is installed with the casing, the nut and bolt are threaded together. One side of the nut has serrations. After tightening, the serrations on the nut mesh with the serrations on the surface of the serrated ring, providing additional axial force and increasing friction. This meshes with the corresponding grooves at the battery pack connection point to achieve reliable self-locking. Simultaneously, when the bolt rotates, it causes the connecting sleeve inside the casing to move, allowing the expansion block to expand and reinforcing the fixing plate and casing. This helps to better achieve self-locking under vibration and other conditions, preventing loosening. This utility model solves the problem of loosening.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a self-locking fastener for battery packs. Background Technology

[0002] A battery pack is a complete device that can be used as an independent power source, which combines multiple battery cells in series, parallel or a combination of series and parallel, and is equipped with a corresponding battery management system (BMS), casing and other auxiliary components.

[0003] A search revealed that Chinese patent CN217976928U discloses a self-locking fastener, comprising a wall, a fastener, and a self-locking structure. The fastener is connected to the middle of the wall, and the self-locking structure is internally connected to the fastener. In use, pushing the pressing rod moves the sliding rod to the left, causing the limiting block to rotate the limiting rod and retract the top plate into the cavity. After passing the fixing rod through the object to be fastened and the wall, the pressing rod is released, and the spring rebounds, causing the sliding rod to push the limiting block and the limiting rod to move, pushing the top plate out of the cavity. Pulling the fixing rod outward makes the top plate fit against the wall. Then, rotating the rotating rod drives the nut to rotate closer to the wall for fastening, thus quickly completing the fastening and keeping the top plate locked against the wall, preventing the fastener from loosening and falling off, and improving the practicality of the device.

[0004] The aforementioned patent has the following shortcomings: after the battery and casing are installed, the nut is prone to loosening after prolonged use, causing the battery pack to be unable to supply power to the device, or even causing a short circuit.

[0005] Therefore, we provide a self-locking fastener for battery packs. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned technical problems by providing a self-locking fastener for battery packs, which prevents loosening during prolonged use.

[0007] In view of this, the present invention provides a self-locking fastener for a battery pack, comprising a packaging component, a coating component, a locking component, and a fastening component, wherein the coating component is fixedly connected inside the packaging component, the locking component is installed inside the packaging component, and the fastening component is installed inside the packaging component.

[0008] The fastening assembly includes a fixing plate, a nut, a serrated ring, a connecting sleeve, and an expansion block. The fixing plate is movably connected inside the packaging assembly, the nut is movably connected above the fixing plate, the serrated ring is fixedly connected above the fixing plate, the connecting sleeve is fixedly connected below the fixing plate, and the expansion block is installed at one end of the connecting sleeve.

[0009] Preferably, the locking assembly includes a cover plate, a locking plate, a movable plate, a spring, a connecting plate, and a pull rod. The cover plate is movably connected above the packaging assembly, the locking plate is fixedly connected below the cover plate, the movable plate is slidably connected inside the packaging assembly, the spring is fixedly connected to one side of the movable plate, the connecting plate is fixedly connected to one end of the spring, and the pull rod is fixedly connected above the movable plate.

[0010] Preferably, the coating assembly includes a protective pad and a nano-coating, the protective pad being fixedly connected to the inner wall of the packaging assembly, and the nano-coating being fixedly connected to one side of the protective pad.

[0011] Preferably, the packaging assembly includes a housing and a battery, the battery being mounted inside the housing, and the housing having an inner mounting slot for mounting a movable plate.

[0012] Preferably, the upper part of the serrated ring is movably connected to another set of serrated rings, and the inner side of the connecting sleeve is provided with threads.

[0013] Preferably, one end of the spring is fixedly connected to the movable plate, the other end of the spring is fixedly connected to the connecting plate, and the connecting plate is fixedly connected to the packaging assembly.

[0014] Preferably, the outer casing has a movable groove for the movement of the pull rod, and the outer surface of the battery has mounting holes for mounting with fastening components.

[0015] Compared with the prior art, this utility model provides a self-locking fastener for battery packs, which has the following advantages:

[0016] This invention features an expansion block that expands to improve self-locking under vibration and other conditions, preventing loosening. The nut, in conjunction with the toothed ring, provides additional axial force and increases friction. The nut also engages with the corresponding toothed groove at the battery pack connection point to achieve reliable self-locking.

[0017] This utility model, by providing a locking plate, enables quick disassembly of the cover plate for easy maintenance. The cover plate and the outer shell combine to form a sealed space to protect the battery pack.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a self-locking fastener for a battery pack proposed in this utility model.

[0020] Figure 2This is a schematic diagram of the internal structure of a self-locking fastener for a battery pack proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of a locking component structure for a self-locking fastener for a battery pack proposed in this utility model.

[0022] Figure 4 This is a schematic diagram of a fastening assembly structure for a self-locking fastener for a battery pack, as proposed in this utility model.

[0023] Figure 5 This is a schematic diagram of the coating assembly structure of a self-locking fastener for a battery pack proposed in this utility model.

[0024] In the diagram: 1. Packaging assembly; 11. Outer shell; 12. Battery; 2. Coating assembly; 21. Protective pad; 22. Nano coating; 3. Locking assembly; 31. Cover plate; 32. Locking plate; 33. Movable plate; 34. Spring; 35. Connecting plate; 36. Pull rod; 4. Fastening assembly; 41. Fixing plate; 42. Nut; 43. Serrated ring; 44. Connecting sleeve; 45. Expansion block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1: As Figures 1-5 As shown, a self-locking fastener for a battery pack includes a packaging component 1, a coating component 2, a locking component 3, and a fastening component 4. The coating component 2 is fixedly connected to the inside of the packaging component 1, the locking component 3 is installed and connected to the inside of the packaging component 1, and the fastening component 4 is installed and connected to the inside of the packaging component 1.

[0028] The fastening assembly 4 includes a fixing plate 41, a nut 42, a serrated ring 43, a connecting sleeve 44, and an expansion block 45. The fixing plate 41 is movably connected inside the packaging assembly 1, the nut 42 is movably connected above the fixing plate 41, the serrated ring 43 is fixedly connected above the fixing plate 41, the connecting sleeve 44 is fixedly connected below the fixing plate 41, and the expansion block 45 is installed and connected to one end of the connecting sleeve 44.

[0029] First, when installing the battery 12 to the outer casing 11, the bolt and the connecting sleeve 44 are connected by threads. Then, the nut 42 is connected to the bolt by threads. One side of the nut 42 is provided with serrations. After tightening, the serrations on the nut 42 mesh with the serrations on the surface of the serrated ring 43, providing additional axial force and increasing friction. It cooperates with the corresponding grooves of the battery pack connection part to achieve reliable self-locking. At the same time, when the bolt rotates, it will drive the connecting sleeve 44 to move inside the outer casing 11, allowing the expansion block 45 to expand and the fixing plate 41 to reinforce the outer casing 11. This helps to achieve better self-locking under vibration and other conditions and prevent loosening.

[0030] Example 2: Figures 1-5 As shown, a self-locking fastener for a battery pack includes a locking assembly 3 comprising a cover plate 31, a locking plate 32, a movable plate 33, a spring 34, a connecting plate 35, and a pull rod 36. The cover plate 31 is movably connected to the top of the packaging assembly 1, the locking plate 32 is fixedly connected to the bottom of the cover plate 31, the movable plate 33 is slidably connected to the inside of the packaging assembly 1, the spring 34 is fixedly connected to one side of the movable plate 33, the connecting plate 35 is fixedly connected to one end of the spring 34, and the pull rod 36 is fixedly connected to the top of the movable plate 33.

[0031] The coating assembly 2 includes a protective pad 21 and a nano coating 22. The protective pad 21 is fixedly connected to the inner wall of the packaging assembly 1, and the nano coating 22 is fixedly connected to one side of the protective pad 21.

[0032] The packaging component 1 includes a housing 11 and a battery 12. The battery 12 is installed inside the housing 11, and the housing 11 has an installation slot for mounting the movable plate 33.

[0033] The upper part of the serrated ring 43 is movably connected to another set of serrated rings 43, and the inner side of the connecting sleeve 44 is provided with threads.

[0034] One end of the spring 34 is fixedly connected to the movable plate 33, and the other end of the spring 34 is fixedly connected to the connecting plate 35. The connecting plate 35 is fixedly connected to the packaging assembly 1.

[0035] The outer casing 11 has a movable groove for the pull rod 36 to move, and the outer surface of the battery 12 has mounting holes for mounting with the fastening assembly 4.

[0036] First, after the battery pack is installed, cover plate 31 is closed. Locking plate 32 pushes the movable plate, allowing locking plate 32 to enter the locking groove on the outer casing 11. The elastic force of spring 34 resets the movable plate 33, allowing cover plate 31 and outer casing 11 to form a sealed space to protect the battery pack. At the same time, when maintenance or other work is required on the battery pack, the lever 36 is moved to move the movable plate 33, which compresses spring 34 and unlocks locking plate 32, thereby enabling quick disassembly of cover plate 31 for easy maintenance.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A self-locking fastener for a battery pack, comprising a packaging assembly (1), a coating assembly (2), a locking assembly (3), and a fastening assembly (4), characterized in that, The coating assembly (2) is fixedly connected to the inside of the packaging assembly (1), the locking assembly (3) is installed and connected to the inside of the packaging assembly (1), and the fastening assembly (4) is installed and connected to the inside of the packaging assembly (1); The fastening assembly (4) includes a fixing plate (41), a nut (42), a serrated ring (43), a connecting sleeve (44), and an expansion block (45). The fixing plate (41) is movably connected inside the packaging assembly (1), the nut (42) is movably connected above the fixing plate (41), the serrated ring (43) is fixedly connected above the fixing plate (41), the connecting sleeve (44) is fixedly connected below the fixing plate (41), and the expansion block (45) is installed and connected to one end of the connecting sleeve (44).

2. The self-locking fastener for a battery pack according to claim 1, characterized in that, The locking assembly (3) includes a cover plate (31), a locking plate (32), a movable plate (33), a spring (34), a connecting plate (35), and a pull rod (36). The cover plate (31) is movably connected above the packaging assembly (1). The locking plate (32) is fixedly connected below the cover plate (31). The movable plate (33) is slidably connected inside the packaging assembly (1). The spring (34) is fixedly connected to one side of the movable plate (33). The connecting plate (35) is fixedly connected to one end of the spring (34). The pull rod (36) is fixedly connected above the movable plate (33).

3. A self-locking fastener for a battery pack according to claim 1, characterized in that, The coating assembly (2) includes a protective pad (21) and a nano-coating (22). The protective pad (21) is fixedly connected to the inner wall of the packaging assembly (1), and the nano-coating (22) is fixedly connected to one side of the protective pad (21).

4. A self-locking fastener for a battery pack according to claim 2, characterized in that, The packaging assembly (1) includes a housing (11) and a battery (12), the battery (12) being installed inside the housing (11), and the housing (11) having an installation slot for mounting a movable plate (33).

5. A self-locking fastener for a battery pack according to claim 1, characterized in that, The upper part of the serrated ring (43) is movably connected to another set of serrated rings (43), and the inner side of the connecting sleeve (44) is provided with threads.

6. A self-locking fastener for a battery pack according to claim 2, characterized in that, One end of the spring (34) is fixedly connected to the movable plate (33), and the other end of the spring (34) is fixedly connected to the connecting plate (35). The connecting plate (35) is fixedly connected to the packaging assembly (1).

7. A self-locking fastener for a battery pack according to claim 4, characterized in that, The outer casing (11) has a movable groove for the pull rod (36) to move, and the outer surface of the battery (12) has mounting holes for mounting with the fastening assembly (4).

Images