Upper plastic part and battery cover plate

Abstract

The upper plastic part comprises a body and a metal block, a containing cavity is formed in the body, the top end of the containing cavity is an open end, the containing cavity is defined by the inner wall and the peripheral wall of the body, a plurality of clamping parts with elastic deformation capacity are arranged on the inner wall of the body at intervals in the circumferential direction, and the metal block is arranged on the inner wall of the body. The metal block is arranged in the containing cavity, the shape of the outer circumference of the metal block is matched with the shape of the inner circumference of the containing cavity, and when the metal block is embedded into the containing cavity, the outer wall of the metal block extrudes the clamping part, so that close fit is formed between the outer circumference of the metal block and the inner circumference of the containing cavity; the utility model further discloses a battery cover plate with the upper plastic part. According to the utility model, the metal block is tightly matched with the upper plastic part body, and the peripheral surface of the metal block is not easy to scrape.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an upper plastic part and a battery cover plate. Background Art

[0002] The cover plate is one of the common components of the battery housing. An aluminum block, an upper plastic part and a bright aluminum block are successively arranged on the cover plate. The three can play an insulating and protective role to increase the safety during the use of the battery. During assembly, the bright aluminum block is installed in the upper plastic part. The pole post passes through the pole post hole of the upper plastic part from top to bottom and is fixedly connected to the bright aluminum block. A receiving cavity is usually opened on the upper plastic part. The bright aluminum block is embedded in the receiving cavity. A tight fit is formed between the bright aluminum block and the receiving cavity, so that the aluminum block can be stably fixed on the upper plastic part. However, there is a drawback that the outer peripheral surface of the bright aluminum block and the inner peripheral surface of the receiving cavity are both flat, and the contact area is large. It is easy to scratch the outer peripheral surface of the bright aluminum block during loading and unloading, and in severe cases, the surface of the bright aluminum block is scratched. Content of the Utility Model

[0003] The purpose of the utility model is to design an upper plastic part and a battery cover plate to solve the above-mentioned technical deficiencies.

[0004] The utility model provides an upper plastic part, which includes a body and a metal block. A groove is opened on the body. The top end of the groove is an open end. The bottom surface and the peripheral surface of the groove enclose to form a receiving cavity. A plurality of clamping parts with elastic deformation ability are arranged at intervals along the circumferential direction on the inner wall of the body. The metal block is arranged in the receiving cavity. The outer peripheral shape of the metal block is adapted to the inner peripheral shape of the receiving cavity. When the metal block is embedded in the receiving cavity, the outer wall of the metal block extrudes the clamping parts, so that a tight fit is formed between the outer periphery of the metal block and the inner periphery of the receiving cavity.

[0005] Preferably, the clamping part is integrally designed with the body and is made of the same material.

[0006] Further optimization, the metal block is an aluminum block.

[0007] Further optimization, the clamping part is a raised part extending from the inner wall of the body and in the shape of a flat block. The surface of the raised part facing the metal block shows an inclined trend from the bottom end to the top end of the receiving cavity. The top end of the raised part is smoothly transitioned with the inner wall of the body.

[0008] Further optimization, the raised part includes an upper half part and a lower half part. The upper half part and the lower half part are integrally and smoothly connected. The lower half part is flush with the bottom end of the body. The surface of the upper half part facing the metal block inclines from the bottom end to the top end towards the inner wall of the body as a guiding surface, which is convenient for the metal block to be loaded into the receiving cavity from the opening.

[0009] Further optimization, the top end of the upper half part is lower than the open end of the body.

[0010] Preferably, the inner edge of the open end of the body is rounded.

[0011] Further optimized, the cross-section of the body is rectangular, the cross-section of the accommodating cavity is also rectangular, and two protrusions are equidistantly spaced on the four inner peripheral walls of the accommodating cavity.

[0012] Preferably, the four inner peripheral walls of the accommodating cavity are all rounded.

[0013] The present utility model also provides a battery cover plate, including a cover plate, and an installation groove is provided on the cover plate, and the above-mentioned upper plastic part is embedded in the installation groove.

[0014] The technical effect of the present utility model is that the upper plastic part is provided with an accommodating groove, and a clamping part is provided on the inner peripheral wall of the accommodating groove. The clamping part is a protrusion made of the same material as the upper plastic part. When the metal block, that is, the aluminum block, is embedded in the accommodating groove, the outer peripheral wall of the aluminum block presses the protrusion, so that a tight fit is formed between the aluminum block and the accommodating groove. At the same time, the contact area between the aluminum block and the accommodating groove through the protrusion is smaller, so that the outer peripheral surface of the aluminum block is not easily scratched during loading and unloading. Description of the Drawings

[0015] Figure 1 is an exploded view of the metal block and the upper plastic part;

[0016] Figure 2 is another perspective exploded view of the metal block and the upper plastic part;

[0017] Figure 3 is a structural diagram of the upper plastic part;

[0018] Figure 4 is a partial cross-sectional view of the metal block embedded in the upper plastic part.

[0019] In the figure: 1. Body; 11. Accommodating cavity; 12. Open end; 13. Exhaust groove; 2. Metal block; 3. Protrusion; 31. Upper half; 311. Guide surface; 32. Lower half; 4. Cover plate; 41. Installation groove; 5. Through hole. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0021] The present utility model provides an upper plastic part, as shown in Figure 1 and 2As shown in the figure, it includes a body 1 and a metal block 2. The body 1 is provided with a groove. The top end of the groove is an open end 12, that is, the top end of the body 1 is the open end 12. The bottom surface and the peripheral surface of the groove enclose a receiving cavity 11. The outer peripheral shape of the metal block 2 is adapted to the inner peripheral shape of the receiving cavity 11, so that the metal block 2 can be embedded in the receiving cavity 11. The body 1 of the upper plastic part is made of plastic, and the metal block 2 is usually an aluminum block.

[0022] A plurality of clamping parts with elastic deformation ability are arranged at intervals along the circumferential direction on the inner wall of the receiving cavity 11. In this embodiment, the clamping part is a protrusion 3. The protrusion 3 extends from the inner wall of the body 1 and has a flat block structure, that is, the protrusion 3 is integrally designed with the body 1. In this embodiment, the material of the protrusion 3 is the same as that of the body 1, which is plastic. Therefore, the protrusion 3 has a certain elastic deformation ability. When the aluminum block is embedded in the receiving cavity 11, the outer wall of the aluminum block forms extrusion with the protrusion 3, so that a tight fit is formed between the outer peripheral surface of the aluminum block and the inner peripheral surface of the receiving cavity 11.

[0023] It should be noted that the outer peripheral surface of the aluminum block is a vertical smooth surface, and the inner peripheral surface of the receiving cavity 11 is also a corresponding vertical smooth surface, so that the aluminum block is embedded in the receiving cavity 11, and the outer peripheral surface of the protrusion 3 and the inner peripheral surface of the receiving cavity 11 can be as close to each other as possible to ensure the installation stability of the aluminum block.

[0024] Furthermore, the surface of the protrusion 3 facing the aluminum block, that is, the surface in contact with the aluminum block, shows an inclined trend from the bottom end to the top end of the body 1, that is, the thickness dimension of the protrusion 3 gradually decreases from the bottom end to the top end, and the top end of the protrusion 3 is smoothly transitioned with the inner wall of the body 1, so that the surface of the protrusion 3 in contact with the aluminum block serves as a guiding surface 311, which is convenient for the aluminum block to be inserted into the receiving cavity 11 from the open end 12. Therefore, on the premise of not affecting the extrusion of the protrusion 3, the loading and unloading of the aluminum block are made more convenient.

[0025] Furthermore, the protrusion 3 includes an upper half 31 and a lower half 32, which are distributed vertically. The upper half 31 and the lower half 32 are integrally formed and smoothly connected. The thickness of the lower half 32 is uniformly set, and the bottom end of the lower half 32 is flush with the bottom end of the body 1. The bottom end of the upper half 31 is connected to the lower half 32, and the top end extends towards the opening end 12. The thickness of the upper half 31 gradually decreases from the bottom end to the top end. That is, the surface of the upper half 31 facing the aluminum block forms an inclination to serve as a guiding surface 311. It should be noted that the top end of the upper half 31 is lower than the opening end 12 of the body 1, that is, there is a certain distance between the upper half 31 and the opening end 12 of the body 1, so that they are not flush. In this way, when the aluminum block is inserted into the receiving groove, the bottom of the aluminum block is squeezed by the lower half 32 of the protrusion 3 to form a tight fit, and the bottom of the aluminum block can be closely attached to the inner wall of the receiving groove. The outer peripheral wall of the top of the aluminum block does not contact the inner peripheral wall of the top of the receiving groove, reducing the contact area between the aluminum block and the receiving groove while ensuring the fixing stability of the aluminum block.

[0026] Further, the inner edge of the opening end 12 of the body 1 is chamfered. Since the body 1 is made of plastic, the opening end 12 of the body 1 is prone to deformation when the aluminum block is inserted, and the chamfered edge enables the aluminum block to be smoothly inserted from the opening end 12.

[0027] In this embodiment, the cross-section of the body 1 is rectangular, and the cross-section of the receiving cavity 11 is also rectangular. Two protrusions 3 are evenly spaced on the four inner peripheral walls of the receiving cavity 11, so that the extrusion points can be evenly distributed along the circumference of the aluminum block, enabling the aluminum block to be stably installed in the receiving cavity 11. At the same time, the protrusion 3 is a block structure with a small thickness, which can prevent relative rotation between the body 1 and the aluminum block.

[0028] In addition, the protrusion 3 is a solid structure, so that the protrusion 3 has high strength and good anti-torsion performance, enabling the aluminum block to have a better tight fit.

[0029] The four inner peripheral walls of the receiving cavity 11 are all chamfered, and the corresponding four corners of the aluminum block are also chamfered, making the tight fit between the aluminum block and the receiving cavity 11 more stable.

[0030] The present utility model also provides a battery cover plate, which includes a cover plate 4. An installation groove 41 is provided on the surface of the cover plate 4. The above-mentioned aluminum block is installed in the installation groove 41 together with the body 1. A through hole 5 penetrating the body 1 is provided on the aluminum block, and the pole column of the cover plate 4 can pass through the through hole 5 to fix the aluminum block and the body 1 to the cover plate 4 in sequence.

[0031] An exhaust groove 13 is provided on the bottom surface of the body 1. After the body 1 is installed in the installation groove 41, the exhaust groove 13 at the bottom end of the body 1 is used for exhausting, facilitating the installation of the body 1.

[0032] The utility model is not limited to the above-mentioned optimal implementation mode. Any person can obtain other various forms of products under the inspiration of the utility model. However, no matter what changes are made in its shape or structure, as long as it has the same or similar technical solutions as this application, it falls within the protection scope of the utility model.

Claims

1. An upper plastic part, characterized in that, It includes a main body (1) and a metal block (2). The main body (1) is provided with a groove. The top end of the groove is an open end (12). The bottom surface and the peripheral surface of the groove enclose a receiving cavity (11). A plurality of clamping parts with elastic deformation ability are arranged at intervals along the circumferential direction on the inner wall of the main body (1). The metal block (2) is arranged in the receiving cavity (11). The outer peripheral shape of the metal block (2) is adapted to the inner peripheral shape of the receiving cavity (11). When the metal block (2) is inserted into the receiving cavity (11), the outer wall of the metal block (2) presses the clamping parts, so that a tight fit is formed between the outer periphery of the metal block (2) and the inner periphery of the receiving cavity (11).

2. The upper plastic part according to claim 1, characterized in that, The clamping part is integrally designed with the main body (1) and is made of the same material.

3. The upper plastic part according to claim 2, characterized in that, The metal block (2) is an aluminum block.

4. A plastic upper part according to claim 2, characterized in that, The clamping part is a protrusion (3) extending from the inner wall of the main body (1) and in the shape of a flat block. The surface of the protrusion (3) facing the metal block (2) slopes from the bottom end to the top end of the receiving cavity (11). The top end of the protrusion (3) is smoothly transitioned with the inner wall of the main body (1).

5. The upper plastic part according to claim 4, characterized in that, The protrusion (3) includes an upper half (31) and a lower half (32). The upper half (31) and the lower half (32) are integrally and smoothly connected. The lower half (32) is flush with the bottom end of the main body (1). The surface of the upper half (31) facing the metal block (2) slopes from the bottom end to the top end towards the inner wall of the main body (1) to serve as a guiding surface (311), facilitating the insertion of the metal block (2) into the receiving cavity (11) from the open end (12).

6. The upper plastic part according to claim 5, characterized in that, The top end of the upper half (31) is lower than the open end (12) of the main body (1).

7. A plastic upper part according to claim 1, characterized in that, The inner edge of the open end (12) of the main body (1) is rounded.

8. A plastic upper part according to claim 4, characterized in that The cross-section of the main body (1) is rectangular, and the cross-section of the receiving cavity (11) is also rectangular. Two protrusions (3) are evenly spaced on each of the four inner peripheral walls of the receiving cavity (11).

9. The upper plastic part according to claim 1, characterized in that, The corners between the four inner peripheral walls of the receiving cavity (11) are all rounded.

10. A battery cover plate, characterized in that, It includes a cover plate (4). An installation groove (41) is provided on the cover plate (4). The upper plastic part described in any one of claims 1 to 9 above is inserted into the installation groove (41).

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