Safety limiting device for battery box

Abstract

The utility model relates to the technical field of battery boxes, in particular to a safety limiting device for a battery box, which comprises a mounting rack and a battery box body, the battery box body is arranged on the upper surface of the mounting rack, and an assisting component is arranged on the surface of the mounting rack; the assisting assembly comprises a clamping unit, the clamping unit comprises a rotating shaft, an assembling cavity is formed in the upper surface of the mounting frame, the rotating shaft is rotationally connected with the inner wall of the assembling cavity, the cambered surface of the rotating shaft is fixedly connected with an L-shaped clamping frame, and the side, close to the battery box body, of the L-shaped clamping frame is fixedly connected with a first rubber pad. And the upper surface of the mounting frame is fixedly connected with a positioning frame. According to the battery box disclosed by the utility model, by arranging the assisting assembly, the stability of the battery box is ensured, and the subsequent disassembly of the battery box is facilitated, so that the problems that the stability of the battery box is poorer during installation or the subsequent disassembly is difficult are reduced, and the safety of the battery box in an installation state is further improved.

Description

Technical Field

[0001] This utility model relates to the field of battery box technology, and in particular to a safety limit device for battery boxes. Background Technology

[0002] Battery boxes are essential devices for housing and protecting batteries. They are made from a variety of raw materials, including metals such as aluminum alloys and steel. Aluminum alloys are lightweight, high-strength, and corrosion-resistant, while steel is strong and impact-resistant. Composite materials include glass fiber reinforced plastics (GFRP) and carbon fiber reinforced plastics (CFRP). GFRP is lightweight, has high specific strength, and is corrosion-resistant, while CFRP has excellent mechanical properties but is more expensive. Engineering plastics include polycarbonate and polypropylene. Polycarbonate has good transparency and impact resistance and can be used for casings and other components, while polypropylene has low density and corrosion resistance and can be used for linings.

[0003] Existing technologies, such as the utility model patent with publication number CN219779124U, disclose a safety limiting device for a battery box and a battery box. This patent employs a lower bracket, a battery box assembly, and a safety limiting component. The lower bracket has a through hole on its support plate. The battery box assembly is supported on the support plate, and a shock absorber is provided between the support plate and the battery box assembly, connecting both. The upper end of the safety limiting component is fixedly connected to the battery box assembly, and the lower end passes through the through hole and is limited to the bottom surface of the support plate away from the battery box assembly. A space is provided between the lower end of the safety limiting component and the bottom surface of the support plate. A set gap is provided between the safety limit component and the through hole at a fixed distance. This utility model can ensure that the shock absorber can be used normally within its limit range of motion, and can protect the shock absorber when the limit range of motion is exceeded, thus extending the service life of the shock absorber. It can also effectively prevent the battery box assembly from accidentally falling off. This solves the problem that the shock absorber can buffer the vertical and horizontal impacts on electric vehicles during sharp turns, bumpy roads, strong starts, or sudden braking. If the shock absorber fails due to excessive impact under extreme conditions, the battery box may detach from the lower bracket, posing a significant safety hazard.

[0004] During the installation of battery boxes, most existing battery boxes on the market are installed using bolts or welding. When bolted, the bolts used for fixing can loosen under the influence of vibration energy generated when the vehicle is moving, resulting in poor stability. When welded, the battery box is connected to the mounting structure as a whole, which requires cutting or other destructive operations to replace or adjust the battery box later, making it difficult to disassemble after installation. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that in the prior art, the welded battery box is connected to the mounting structure as one piece, which requires cutting or other destructive operations when replacing or adjusting the battery box, making it difficult to disassemble after installation. Therefore, a safety limiting device for the battery box is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a safety limiting device for a battery box, comprising a mounting frame and a battery box body, wherein the battery box body is disposed on the upper surface of the mounting frame, and the surface of the mounting frame is provided with assisting components;

[0007] The assisting component includes a clamping unit, which includes a rotating shaft. An assembly cavity is formed on the upper surface of the mounting frame. The rotating shaft is rotatably connected to the inner wall of the assembly cavity. An L-shaped clamping frame is fixedly connected to the arc surface of the rotating shaft. A rubber pad is fixedly connected to the side of the L-shaped clamping frame near the battery box body. A positioning frame is fixedly connected to the upper surface of the mounting frame. A tension spring is installed on the inner wall of the positioning frame. A load-bearing block is fixedly connected to the side surface of the L-shaped clamping frame. An insertion hole is formed on the surface of the load-bearing block. The tension spring is fixedly connected to the inner wall of the insertion hole.

[0008] The assisting component also includes a locking unit, which includes a buckle that is inserted into the inner wall of the L-shaped clamping frame. A rubber pad is fixedly connected to the lower surface of the buckle. A storage cavity is formed on the side surface of the buckle. A locking pin is slidably connected to the inner wall of the storage cavity. The locking pin is inserted into the inner wall of the L-shaped clamping frame. A limit spring is fixedly connected to the inner wall of the locking pin. The end of the limit spring away from the locking pin is fixedly connected to the inner wall of the storage cavity. Guide protrusions are fixedly connected to both sides of the locking pin. The guide protrusions are slidably connected to the inner wall of the storage cavity.

[0009] Preferably, the L-shaped clamp is located on the inner wall of the assembly cavity, and the end of the L-shaped clamp near the rotating shaft is arc-shaped. Through the L-shaped clamp, the battery box can be clamped by the weight of the battery box itself during the process of the worker placing the battery box body.

[0010] Preferably, the first rubber pad is in contact with the surface of the battery box body, and the second rubber pad is in contact with the upper surface of the battery box body. Through the cooperation of the first rubber pad and the second rubber pad, the position where the L-shaped clamp and the buckle contact the battery box body can be protected.

[0011] Preferably, the buckle is sleeved on the surface of the battery box body, and the buckle can be used to fix the position of the battery box body in the locked state in conjunction with the L-shaped clamp.

[0012] Preferably, there are two locking pins, which are mirror images of the L-shaped clamping frame. The position of the buckle can be locked by the cooperation of the locking pins with the L-shaped clamping frame.

[0013] Preferably, there are two limiting springs, which are arranged symmetrically about the locking pin. The limiting springs can constrain the position of the locking pin to ensure that the locking pin can restrict the position of the buckle.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] In this invention, by setting up an assistive component, when installing the battery box body, the battery box body is aligned with the placement area formed by the L-shaped clamping frame. During the process of the worker placing the battery box body, the battery box body comes into contact with the L-shaped clamping frame. Under the weight of the battery box body, the L-shaped clamping frame is guided to rotate by a pivot. When the L-shaped clamping frame rotates, it pulls the load-bearing block, which in turn pulls the tension spring, causing the tension spring to deform. At the same time, the rubber pad, under the action of the L-shaped clamping frame, presses against the surface of the battery box body. When the battery box body is fully in contact with the upper surface of the mounting frame, the L-shaped clamping frame located around the battery box body, together with the rubber pad, clamps the battery box body for initial positioning. After completing the above operations, the buckle is removed, aligned with the slot on the L-shaped clamping frame, and pushed. The buckle is then subjected to force. Pushing the rubber pad and the locking pin, the locking pin contacts the slot opening during movement and slides into the storage cavity guided by the slot opening. At the same time, the locking pin compresses the limiting spring, causing the limiting spring to deform. When the buckle is fully inserted into the slot, the locking pin aligns with the pre-reserved slot on the L-shaped clamp. The locking pin loses the constraint of the L-shaped clamp and the pressure applied to the limiting spring. The limiting spring rebounds and pushes the locking pin into the L-shaped clamp to lock the buckle. When the buckle is locked, the limiting operation of the battery box is completed. By setting up the assisting component, the stability of the battery box is ensured while facilitating subsequent disassembly of the battery box. This reduces the problems of poor stability during battery box installation or difficulty in subsequent disassembly, and further improves the safety of the battery box in the installed state. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a safety limiting device for a battery box;

[0017] Figure 2 A bottom view of the structure of a safety limiting device for a battery box is provided for this utility model;

[0018] Figure 3 This utility model provides a partial structural schematic diagram of a safety limiting device for a battery box;

[0019] Figure 4 This utility model proposes a safety limit device for a battery box. Figure 3 Schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This utility model provides a schematic diagram of the clamping unit structure of a safety limiting device for a battery box;

[0021] Figure 6 This utility model proposes a safety limit device for a battery box. Figure 5 Side view structural diagram;

[0022] Figure 7 This utility model proposes a safety limit device for a battery box. Figure 6 Schematic diagram of the structure at point B;

[0023] Figure 8 This utility model presents a schematic diagram of the locking unit structure of a safety limit device for a battery box.

[0024] Legend:

[0025] 1. Mounting bracket; 2. Battery box body; 3. Assisting components; 31. Clamping unit; 311. Assembly cavity; 312. Rotating shaft; 313. L-shaped clamping bracket; 314. Rubber pad one; 315. Positioning bracket; 316. Tension spring; 317. Load-bearing block; 32. Locking unit; 321. Buckle; 322. Rubber pad two; 323. Storage cavity; 324. Locking pin; 325. Limiting spring; 326. Guide protrusion. Detailed Implementation

[0026] Please see Figures 1-8 This utility model provides a technical solution: a safety limiting device for a battery box, including a mounting frame 1 and a battery box body 2. The battery box body 2 is disposed on the upper surface of the mounting frame 1, and an assisting component 3 is disposed on the surface of the mounting frame 1.

[0027] In this embodiment: the assisting component 3 includes a clamping unit 31, the clamping unit 31 includes a rotating shaft 312, the upper surface of the mounting frame 1 is provided with an assembly cavity 311, the rotating shaft 312 is rotatably connected to the inner wall of the assembly cavity 311, the arc surface of the rotating shaft 312 is fixedly connected to an L-shaped clamping frame 313, the side of the L-shaped clamping frame 313 near the battery box body 2 is fixedly connected to a rubber pad 314, the upper surface of the mounting frame 1 is fixedly connected to a positioning frame 315, the inner wall of the positioning frame 315 is installed with a tension spring 316, the side surface of the L-shaped clamping frame 313 is fixedly connected to a load block 317, the surface of the load block 317 is provided with an insertion hole, and the tension spring 316 is fixedly connected to the inner wall of the insertion hole;

[0028] The assisting component 3 also includes a locking unit 32, which includes a buckle 321. The buckle 321 is inserted into the inner wall of the L-shaped clamping frame 313. A rubber pad 322 is fixedly connected to the lower surface of the buckle 321. A storage cavity 323 is opened on the side surface of the buckle 321. A locking pin 324 is slidably connected to the inner wall of the storage cavity 323. The locking pin 324 is inserted into the inner wall of the L-shaped clamping frame 313. A limit spring 325 is fixedly connected to the inner wall of the locking pin 324. The end of the limit spring 325 away from the locking pin 324 is fixedly connected to the inner wall of the storage cavity 323. Guide protrusions 326 are fixedly connected to both sides of the locking pin 324. The guide protrusions 326 are slidably connected to the inner wall of the storage cavity 323.

[0029] Specifically, the L-shaped clamp 313 is located on the inner wall of the assembly cavity 311. The end of the L-shaped clamp 313 near the rotating shaft 312 is arc-shaped. Through the L-shaped clamp 313, the battery box can be clamped by the weight of the battery box body 2 itself during the process of the staff placing the battery box body 2.

[0030] Specifically, rubber pad 314 is in contact with the surface of the battery box body 2, and rubber pad 322 is in contact with the upper surface of the battery box body 2.

[0031] In this embodiment, the positions where the L-shaped clamp 313 and the buckle 321 contact the battery box body 2 can be protected by the cooperation of the rubber pad 314 and the rubber pad 322.

[0032] Specifically, the buckle 321 is sleeved with the surface of the battery box body 2. The buckle 321 can fix the position of the battery box body 2 in the locked state in conjunction with the L-shaped clamp 313.

[0033] In this embodiment, there are two locking pins 324, which are mirror images of each other about the L-shaped clamping frame 313.

[0034] In this embodiment, the position of the buckle 321 can be locked by the cooperation of the locking pin 324 and the L-shaped clamping frame 313.

[0035] Specifically, there are two limiting springs 325, which are arranged symmetrically about the locking pin 324. The limiting springs 325 can constrain the position of the locking pin 324 to ensure that the locking pin 324 can restrict the position of the buckle 321.

[0036] Working principle: When installing the battery box body 2, align the battery box body 2 with the placement area formed by the L-shaped clamp 313. During the process of the operator placing the battery box body 2, the battery box body 2 comes into contact with the L-shaped clamp 313. Under the weight of the battery box body 2, the L-shaped clamp 313 is guided to rotate by the rotating shaft 312. When the L-shaped clamp 313 rotates, it pulls the load block 317, which in turn pulls the tension spring 316. The tension spring 316 is stretched and deformed. When the rubber pad 314 is pressed against the surface of the battery box body 2 by the L-shaped clamping bracket 313, and the battery box body 2 is fully in contact with the upper surface of the mounting bracket 1, the L-shaped clamping bracket 313 around the battery box body 2, together with the rubber pad 314, clamps the battery box body 2 for initial positioning. After completing the above operation, the buckle 321 is removed, aligned with the slot on the L-shaped clamping bracket 313, and pushed. The buckle 321 is pushed by force. The movable rubber pad 322 and the locking pin 324 are used. During the movement, the locking pin 324 contacts the slot opening and slides into the receiving cavity 323 under the guidance of the slot opening. At the same time, the locking pin 324 compresses the limiting spring 325, which is deformed by compression. When the buckle 321 is fully inserted into the slot, the locking pin 324 coincides with the reserved slot on the L-shaped clamp 313. The locking pin 324 loses the constraint of the L-shaped clamp 313 and loses the pressure applied to the limiting spring 325. The limiting spring 325 rebounds after losing pressure and pushes the locking pin 324 into the L-shaped clamp 313 to lock the buckle 321. When the buckle 321 is locked, the limiting operation of the battery box is completed. By setting the assisting component 3, the stability of the battery box is ensured while facilitating the subsequent disassembly of the battery box. This reduces the problem of poor stability of the battery box during installation or difficulty in subsequent disassembly, and further improves the safety of the battery box in the installed state.

Claims

1. A safety limiting device for a battery box, comprising a mounting bracket (1) and a battery box body (2), characterized in that: The battery box body (2) is disposed on the upper surface of the mounting bracket (1), and the surface of the mounting bracket (1) is provided with an assisting component (3); The assisting component (3) includes a clamping unit (31), the clamping unit (31) includes a rotating shaft (312), the upper surface of the mounting frame (1) is provided with an assembly cavity (311), the rotating shaft (312) is rotatably connected to the inner wall of the assembly cavity (311), the arc surface of the rotating shaft (312) is fixedly connected with an L-shaped clamping frame (313), the side of the L-shaped clamping frame (313) near the battery box body (2) is fixedly connected with a rubber pad (314), the upper surface of the mounting frame (1) is fixedly connected with a positioning frame (315), the inner wall of the positioning frame (315) is installed with a tension spring (316), the side surface of the L-shaped clamping frame (313) is fixedly connected with a load block (317), the surface of the load block (317) is provided with an insertion hole, and the tension spring (316) is fixedly connected to the inner wall of the insertion hole; The assisting component (3) further includes a locking unit (32), which includes a buckle (321). The buckle (321) is inserted into the inner wall of the L-shaped clamp (313). A rubber pad (322) is fixedly connected to the lower surface of the buckle (321). A storage cavity (323) is opened on the side surface of the buckle (321). A latch (32) is slidably connected to the buckle (321) on the inner wall of the storage cavity (323). 4) The locking pin (324) is inserted into the inner wall of the L-shaped clamp (313). A limiting spring (325) is fixedly connected to the inner wall of the locking pin (324). The end of the limiting spring (325) away from the locking pin (324) is fixedly connected to the inner wall of the storage cavity (323). Guide protrusions (326) are fixedly connected to both sides of the locking pin (324). The guide protrusions (326) are slidably connected to the inner wall of the storage cavity (323).

2. The safety limit device for a battery box according to claim 1, characterized in that: The L-shaped clamp (313) is located on the inner wall of the assembly cavity (311), and the end of the L-shaped clamp (313) near the rotating shaft (312) is arc-shaped.

3. A safety limit device for a battery box according to claim 1, characterized in that: The first rubber pad (314) is in contact with the surface of the battery box body (2), and the second rubber pad (322) is in contact with the upper surface of the battery box body (2).

4. A safety limit device for a battery box according to claim 1, characterized in that: The buckle (321) is fitted onto the surface of the battery box body (2).

5. A safety limit device for a battery box according to claim 1, characterized in that: The number of the locking pins (324) is two, and the two locking pins (324) are mirror images of each other with respect to the L-shaped clamp (313).

6. A safety limit device for a battery box according to claim 1, characterized in that: There are two limiting springs (325), and the two limiting springs (325) are arranged symmetrically about the locking pin (324).

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