Small cover and plug of lead-acid storage battery

Abstract

The small cover of the lead-acid storage battery comprises a rectangular small cover body, and a circle of heat sealing rib is arranged on the inner side of the edge of the small cover body; the air filtering sheet is mounted in the air filtering sheet mounting hole, and the air filtering sheet mounting hole is communicated with the exhaust channel; the edge of the small cover body is provided with an orifice of the exhaust channel; the orifice is circular, and the inner diameter of the orifice is consistent with the inner diameter of the exhaust passage; two exhaust channels are arranged in the small cover body, and a plug is arranged in one exhaust channel. The plug comprises a tail part and a head part which are connected with each other; a plurality of annular bulges which are in interference fit with the exhaust channel are uniformly and annularly distributed outside the tail part; the head part is of a semicircular structure, and the designed storage battery plug can be well matched with a small cover, so that the defects that the mounting is difficult, the mounting and the dismounting are difficult due to the fact that external force needs to be used for striking are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage batteries, and in particular relates to a small cover and a plug for a lead-acid storage battery. Background Art

[0002] With the diversified development of vehicle models in the current domestic market, there is a relatively large demand for batteries, especially with the increase in high-end vehicle models at this stage. In order to prevent the gas generated by the battery when it is working from being discharged into the vehicle body, the exhaust port on one side of the battery cover needs to be pressed with a plug when the battery leaves the factory. When assembling at the OEM, an exhaust duct needs to be added to the other exhaust port of the small cover on the upper part of the battery. This ensures that the gas discharged from the battery can be discharged from the exhaust pipe.

[0003] However, since the plug structure used in the existing small cover is a stepped cylindrical structure, the small step part at one end is too tight with the exhaust port, and external force needs to be used to knock and install it during assembly, which is more laborious and requires vertical force. Otherwise, the plug cannot be assembled firmly, causing the risk of air leakage. The upper edge of the large step part at the other end must not exceed the upper surface of the small cover, and the lower edge must not exceed the lower surface of the small cover. Therefore, when the plug needs to be removed, it is difficult to apply force and tools are needed to pull it out. Summary of the invention

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art, thereby providing a small cover and a plug for a lead-acid battery, which solve the shortcomings of the existing plug that is not firmly installed and difficult to disassemble.

[0005] The technical solution of the utility model is: a small cover of a lead-acid storage battery, comprising a rectangular small cover body, wherein a circle of heat-sealed ribs is arranged on the inner side of the edge of the small cover body;

[0006] The air filter is installed in the air filter installation hole, and the air filter installation hole is connected to the exhaust channel;

[0007] The edge of the small cover body is provided with an opening of the exhaust channel; the opening is circular, and the inner diameter of the opening is consistent with the inner diameter of the exhaust channel;

[0008] The small cover body is provided with two exhaust passages, one of which is provided with a plug;

[0009] The plug includes a tail portion and a head portion connected to each other;

[0010] The tail portion is evenly and circumferentially provided with a plurality of annular protrusions which are interference-fitted with the exhaust passage; and the head portion is a semicircular structure.

[0011] When the arc edge of the head rotates downward, the straight edge of the head is flush with the upper end surface of the small cover body; when the straight edge of the head rotates downward, the arc edge of the head protrudes from the upper end surface of the small cover body.

[0012] The tail portion is a cylinder that matches the exhaust passage.

[0013] The center line of the air filter installation hole is perpendicular to the center line of the exhaust channel.

[0014] A positioning column is arranged inside the small cover body.

[0015] The outer edge of the small cover body is provided with an outer wall, and reinforcing ribs are evenly distributed between the heat sealing ribs and the outer wall.

[0016] including a tail and a head connected to each other;

[0017] The tail portion is evenly and circumferentially provided with a plurality of annular protrusions which are interference-fitted with the exhaust passage; and the head portion is a semicircular structure.

[0018] When the arc edge of the head rotates downward, the straight edge of the head is flush with the upper end surface of the small cover body; when the straight edge of the head rotates downward, the arc edge of the head protrudes from the upper end surface of the small cover body.

[0019] The advantages of the utility model are: 1. The battery plug is divided into a plug head and a plug tail. The plug tail has a circular ring structure design. Compared with the traditional smooth surface design, the circular protrusion at the plug tail cooperates more closely with the exhaust hole of the battery. 2. The plug head is semicircular in design. During installation, the straight edge can be flush with the small cover to ensure that it is installed in place. During disassembly, the half-moon-shaped plug head can be rotated and directly disassembled, which is very convenient. 3. The exhaust hole of the battery small cover is designed at the top of the small cover. Compared with the current plug with a circular structure, the circular edge is flush with the upper side of the small cover, so the upper part of the small cover needs to be at least 2~3mm thick. The exhaust hole of the small cover can be directly flush with the upper side of the small cover, saving materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a bottom view of the small cover;

[0021] Figure 2 for Figure 1 BB cross-section diagram;

[0022] Figure 3 This is a schematic diagram of the structure of the plug of the utility model;

[0023] Figure 4 for Figure 3 A top view of

[0024] Figure 5 It is a side view of the small cover;

[0025] Figure 6 It is a side view of the utility model in state 1;

[0026] Figure 7 It is a side view of the second state of the utility model. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] like Figure 1 , Figure 2 and Figure 5 As shown, a positioning column 1 is provided inside the rectangular small cover body, the outer edge of the small cover body 9 has a circle of outer wall, the inner side of the edge has a circle of heat-sealing ribs 7, and reinforcing ribs are evenly distributed between the heat-sealing ribs 7 and the outer wall. There are exhaust channels 5 at both ends of the small cover body 9, and the edge of the small cover body has an opening 8 of the exhaust channel 5. The opening 8 is circular, and the inner diameter of the opening 8 is consistent with the inner diameter of the exhaust channel 5. A plug 4 is installed in the opening end of one of the exhaust channels 5, and the other end of the exhaust channel 5 is connected to the air filter installation hole 6. The air filter 2 is installed in the air filter installation hole 6, and the center line of the air filter installation hole 6 is perpendicular to the center line of the exhaust channel 5.

[0029] like Figure 3 , Figure 4 As shown, the plug 4 is composed of a tail portion 4-1 and a head portion 4-2. The tail portion 4-1 is a cylinder that matches the exhaust passage 5. A number of annular protrusions that are interference fit with the exhaust passage 5 are evenly distributed outside the tail portion 4-1. The head portion 4-2 is a semicircular structure.

[0030] like Figure 6 , Figure 7 As shown, when the arc edge of the head 4-2 is rotated downward, the straight edge of the head 4-2 is flush with the upper end surface of the small cover body; when the straight edge of the head 4-2 is rotated downward, the arc edge of the head 4-2 protrudes from the upper end surface of the small cover body. After the plug head is rotated 180°, it can be easily disassembled.

Claims

1. A small cover for a lead-acid battery, characterized in that: It comprises a rectangular small cover body (9), and a circle of heat-sealing ribs (7) are arranged on the inner side of the edge of the small cover body; The air filter (2) is installed in the air filter installation hole (6), and the air filter installation hole (6) is connected to the exhaust channel (5); The edge of the small cover body is provided with an opening (8) of the exhaust channel (5); the opening (8) is circular, and the inner diameter of the opening (8) is consistent with the inner diameter of the exhaust channel (5); The small cover body is provided with two exhaust passages (5), one of the exhaust passages (5) being provided with a plug (4); The plug (4) comprises a tail portion (4-1) and a head portion (4-2) which are connected to each other; The tail portion (4-1) is evenly distributed with a plurality of annular protrusions which are interference-fitted with the exhaust passage (5); and the head portion (4-2) is a semicircular structure.

2. A lead-acid battery small cover according to claim 1, characterized in that: When the arc edge of the head (4-2) rotates downward, the straight edge of the head (4-2) is flush with the upper end surface of the small cover body; when the straight edge of the head (4-2) rotates downward, the arc edge of the head (4-2) protrudes from the upper end surface of the small cover body.

3. A lead-acid battery small cover according to claim 1, characterized in that: The tail portion (4-1) is a cylinder that matches the exhaust passage (5).

4. A lead-acid battery small cover according to claim 1, characterized in that: The center line of the air filter installation hole (6) is perpendicular to the center line of the exhaust channel (5).

5. The lead-acid battery small cover according to claim 1, characterized in that: A positioning column (1) is provided inside the small cover body.

6. A lead-acid battery small cover according to claim 1, characterized in that: The outer edge of the small cover body is provided with an outer wall, and reinforcing ribs are evenly distributed between the heat sealing ribs (7) and the outer wall.

7. A plug for a small cover of a lead-acid battery, installed in one of the exhaust passages (5) in the small cover body, characterized in that: It includes a tail portion (4-1) and a head portion (4-2) connected to each other; The tail portion (4-1) is evenly distributed with a plurality of annular protrusions which are interference-fitted with the exhaust passage (5); and the head portion (4-2) is a semicircular structure.

8. The plug for the small cover of a lead-acid battery according to claim 7, characterized in that: When the arc edge of the head (4-2) rotates downward, the straight edge of the head (4-2) is flush with the upper end surface of the small cover body; when the straight edge of the head (4-2) rotates downward, the arc edge of the head (4-2) protrudes from the upper end surface of the small cover body.

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