Top cover and pole assembling structure for preventing sealing ring from rebounding

Abstract

The utility model relates to a top cover and pole assembling structure for preventing a sealing ring from rebounding, which relates to the technical field of pole sealing, and comprises a pole, the outer side wall of the pole is obliquely arranged, a lower top cover and an upper top cover are sleeved on the pole, the upper top cover is positioned above the lower top cover, the upper top cover is detachably connected with the lower top cover, and the upper top cover is detachably connected with the lower top cover. A middle sealing ring is arranged between the upper top cover and the lower top cover, the inner ring wall of the middle sealing ring is attached to the outer side wall of the pole, the top wall of the middle sealing ring abuts against the bottom wall of the upper top cover, and the bottom wall of the middle sealing ring abuts against the top wall of the lower top cover. The device has the effects of reducing the condition of rebounding of the sealing ring and improving the assembling quality of the top cover and the pole.

Description

Technical Field

[0001] The utility model relates to the technical field of pole sealing, in particular to a top cover and pole assembly structure for preventing a sealing ring from rebounding. Background Art

[0002] During the production process of batteries, the electrolyte inside the battery will gradually infiltrate and climb upward along the surface of the pole under the action of capillary phenomenon until it leaks out from the connection between the pole and the top cover. Therefore, in order to reduce leakage, a sealing structure will be set between the pole and the top cover.

[0003] The existing pole sealing structure is usually composed of a sealing ring, a sealant and an identification glue. The sealing ring is first put on the pole, and then the cover plate is put on the pole, so that the sealing ring abuts between the pole and the cover plate to form a primary seal, and then the sealant is injected over the sealing ring. The sealing ring prevents the sealant from leaking into the battery. When the sealant is cured, a secondary seal is formed between the pole and the cover plate. Finally, the identification glue is injected over the sealant. The identification glue is used to distinguish the positive and negative poles of the battery.

[0004] Since the pole is usually a cone-shaped pole that is thick at the bottom and thin at the top, and the surface of the pole is smooth, when the sealant is poured over the sealing ring, the sealing ring is easily moved upward due to the reaction force, making the sealing ring ineffective in sealing the gap between the pole and the cover plate, causing the sealant to leak into the battery, affecting the battery production quality. Utility Model Content

[0005] In order to reduce the rebound of the sealing ring and improve the assembly quality of the top cover and the pole, the present application provides a top cover and pole assembly structure that prevents the rebound of the sealing ring.

[0006] The present application provides a top cover and pole assembly structure for preventing the sealing ring from rebounding, which adopts the following technical solution:

[0007] A top cover and pole assembly structure for preventing a sealing ring from rebounding comprises a pole, wherein the outer wall of the pole is arranged obliquely, a lower top cover and an upper top cover are sleeved on the pole, the upper top cover is located above the lower top cover, the upper top cover and the lower top cover are detachably connected, a middle sealing ring is arranged between the upper top cover and the lower top cover, the inner ring wall of the middle sealing ring is in contact with the outer wall of the pole, the top wall of the middle sealing ring is in contact with the bottom wall of the upper top cover, and the bottom wall of the middle sealing ring is in contact with the top wall of the lower top cover.

[0008] By adopting the above technical solution, the lower top cover is firstly sleeved on the pole, then the middle sealing ring is sleeved on the pole, and finally the upper top cover is sleeved on the pole, and then the upper top cover and the lower top cover limit the upper and lower positions of the middle sealing ring, so that the middle sealing ring forms a primary seal between the pole and the cover plate, and when the sealant is injected above the middle sealing ring, the middle sealing ring is restricted by the upper top cover and is not easy to move upward, and then the middle sealing ring makes it difficult for the sealant to leak into the battery, reducing the rebound of the middle sealing ring along the pole, thereby achieving the effect of improving the assembly quality of the top cover and the pole.

[0009] Preferably, an upper through hole is formed through the upper top cover, and a lower through hole is formed through the lower top cover, the upper through hole and the lower through hole are arranged opposite to each other, the pole is inserted in the upper through hole and the lower through hole, an upper sealing ring is arranged in the upper through hole, the outer ring wall of the upper sealing ring is in contact with the inner wall of the upper through hole, the inner ring wall of the upper sealing ring is in contact with the side wall of the pole, a lower sealing ring is arranged in the lower through hole, the outer ring wall of the lower sealing ring is in contact with the inner wall of the lower through hole, and the inner ring wall of the lower sealing ring is in contact with the side wall of the pole.

[0010] By adopting the above technical solution, the lower sealing ring is firstly sleeved on the pole, and then the lower top cover is sleeved on the pole through the upper through hole, so that the lower sealing ring is located in the lower through hole, at this time, the lower sealing ring abuts between the lower top cover and the pole to form a seal, then the middle sealing ring is sleeved on the pole, after the middle sealing ring is sleeved on the pole, the upper sealing ring is sleeved on the pole, and finally the upper top cover is sleeved on the pole through the upper through hole, the bottom of the upper top cover and the top of the lower top cover are fitted with each other, at this time, the upper sealing ring abuts between the upper top cover and the pole to form a seal, and at the same time, the upper top cover and the lower top cover form upper and lower limit positions for the centering sealing ring.

[0011] Preferably, a limiting ring is fixedly arranged in the upper through hole, the limiting ring is sleeved on the pole, and the bottom wall of the limiting ring abuts against the top wall of the upper sealing ring.

[0012] By adopting the above technical solution, after the upper sealing ring is sleeved on the pole, the upper top cover is sleeved on the pole through the upper through hole, and the limiting ring in the upper through hole limits the upper sealing ring, so that the upper sealing ring is not easy to move upward.

[0013] Preferably, an upper ring groove is formed on the inner wall of the upper through hole, and the upper ring groove passes through the bottom wall of the upper top cover; a lower ring groove is formed on the inner wall of the lower through hole, and the lower ring groove passes through the top wall of the lower top cover; the upper ring groove and the lower ring groove are arranged opposite to each other, and the middle sealing ring is arranged in the upper ring groove and the lower ring groove.

[0014] By adopting the above technical solution, after the lower sealing ring is located in the upper through hole and the lower sealing ring abuts against the lower top cover and the pole to form a seal, the middle sealing ring is first sleeved on the pole, then the upper sealing ring is sleeved on the pole, and finally the upper top cover is sleeved on the pole. The upper top cover squeezes the middle sealing ring so that the middle sealing ring abuts between the upper ring groove, the lower ring groove and the pole, and then the top of the middle sealing ring is restricted by the upper ring groove and is not easy to move upward, and the top of the middle sealing ring is restricted by the lower ring groove and is not easy to move downward.

[0015] Preferably, the bottom wall of the upper sealing ring and the top wall of the upper ring groove are in contact with the top wall of the middle sealing ring, the top wall of the lower sealing ring and the bottom wall of the lower ring groove are in contact with the bottom wall of the middle sealing ring, the side walls of the upper ring groove and the side walls of the lower ring groove are in contact with the outer ring wall of the middle sealing ring, and the side walls of the pole are in contact with the inner ring wall of the middle sealing ring.

[0016] By adopting the above technical solution, the middle sealing ring abuts between the upper ring groove, the lower ring groove and the pole, so that the middle sealing ring forms a seal in the vertical direction, and the middle sealing ring abuts between the upper sealing ring and the lower sealing ring, so that the middle sealing ring forms a seal in the horizontal direction.

[0017] Preferably, a plurality of locking grooves are provided on the bottom wall of the lower top cover, and a plurality of locking holes are penetrated through the upper top cover. The locking holes and the locking grooves are arranged opposite to each other, and locking bolts are arranged in the locking holes. The locking bolts penetrate the locking holes and are threadedly connected to the locking grooves.

[0018] By adopting the above technical solution, when the upper cover and the lower cover press the middle sealing ring tightly, the locking bolt is passed through the locking hole and threadedly connected to the locking groove, and then the upper cover and the lower cover are fastened together by the locking bolt.

[0019] Preferably, a clearance ring groove is provided on the inner wall of the locking hole, the clearance ring groove passes through the top wall of the upper cover, and the locking bolt is inserted into the clearance ring groove.

[0020] By adopting the above technical solution, when the locking bolt fastens the upper cover and the lower cover together, the top end of the locking bolt is located in the yield ring groove, so that the top end of the locking bolt is not easy to protrude from the top of the upper cover.

[0021] Preferably, a positioning pin is fixedly provided on the top of the lower top cover, and a positioning groove is provided at the bottom of the upper top cover, and the positioning groove is used for inserting the positioning pin.

[0022] By adopting the above technical solution, when the upper cover is sleeved on the pole, the positioning pin is inserted into the positioning groove, and then the locking hole and the locking groove are placed opposite to each other, which facilitates the locking bolt to be inserted into the locking groove from the locking hole.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the pole, lower top cover, upper top cover and middle sealing ring, the rebound of the middle sealing ring along the pole is reduced, so as to improve the assembly quality of the top cover and the pole;

[0025] 2. By setting locking grooves, locking holes and locking bolts, the upper cover and the lower cover are fastened together by locking bolts;

[0026] 3. By providing the positioning pin and the positioning groove, it is convenient for the locking bolt to be inserted into the locking groove from the locking hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of a top cover and pole assembly structure for preventing a sealing ring from rebounding in an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Enlarged view of part A.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Pole; 2. Upper top cover; 21. Upper through hole; 22. Upper ring groove; 3. Lower top cover; 31. Lower through hole; 32. Lower ring groove; 4. Upper sealing ring; 41. Limiting ring; 5. Middle sealing ring; 6. Lower sealing ring; 7. Locking bolt; 71. Locking hole; 72. Locking groove; 73. Give way ring groove; 8. Positioning pin; 81. Positioning groove; 9. Sealing layer; 91. Identification layer. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The embodiment of the present application discloses a top cover and pole assembly structure for preventing the sealing ring from rebounding. Figure 1 , including a pole 1, the pole 1 is thin at the top and thick at the bottom, so that the outer wall of the pole 1 is inclined. A lower cover 3 and an upper cover 2 are sleeved on the pole 1, the top cover is located above the lower cover 3, and the upper cover 2 and the lower cover 3 are detachably connected. A middle sealing ring 5 is arranged between the upper cover 2 and the lower cover 3, the top wall of the middle sealing ring 5 abuts against the bottom wall of the upper cover 2, the bottom wall of the middle sealing ring 5 abuts against the top wall of the lower cover 3, and the inner ring wall of the middle sealing ring 5 fits against the outer wall of the pole 1. First, the lower cover 3 is sleeved on the pole 1, then the middle sealing ring 5 is sleeved on the pole 1, and finally the upper cover 2 is sleeved on the pole 1. When the upper cover 2 and the lower cover 3 are fastened together, the upper cover 2 and the lower cover 3 limit the upper and lower positions of the middle sealing ring 5, so that the middle sealing ring 5 forms a primary seal between the pole 1 and the cover plate. When the sealant is injected onto the middle sealing ring 5, the middle sealing ring 5 is restricted by the upper cover 2 and cannot move upwards, so the middle sealing ring 5 makes it difficult for the sealant to leak into the battery, reducing the rebound of the middle sealing ring 5 along the pole 1, thereby improving the assembly quality of the top cover and the pole 1.

[0032] In order to form upper and lower limits for the centering of the sealing ring 5 between the upper cover 2 and the lower cover 3, refer to Figure 1 and Figure 2 The upper cover 2 is provided with an upper through hole 21, and the lower cover 3 is provided with a lower through hole 31. The upper through hole 21 and the lower through hole 31 are arranged opposite to each other, and the pole 1 is inserted into the upper through hole 21 and the lower through hole 31. An upper ring groove 22 is provided on the inner wall of the upper through hole 21, and the upper ring groove 22 passes through the bottom wall of the upper cover 2. A lower ring groove 32 is provided on the inner wall of the lower through hole 31, and the lower ring groove 32 passes through the top wall of the lower cover 3. The upper ring groove 22 and the lower ring groove 32 are arranged opposite to each other. The middle sealing ring 5 is arranged in the upper ring groove 22 and the lower ring groove 32. The side walls of the upper ring groove 22 and the side walls of the lower ring groove 32 are both fitted with the outer ring wall of the middle sealing ring 5, the side wall of the pole 1 and the inner ring wall of the middle sealing ring 5 are fitted with each other, the top wall of the upper ring groove 22 and the top wall of the middle sealing ring 5 are abutted against each other, and the bottom wall of the lower ring groove 32 and the bottom wall of the middle sealing ring 5 are abutted against each other. An upper sealing ring 4 is arranged in the upper through hole 21, and the outer ring wall of the upper sealing ring 4 fits with the inner wall of the upper through hole 21, the inner ring wall of the upper sealing ring 4 fits with the side wall of the pole 1, and the bottom wall of the upper sealing ring 4 abuts against the top wall of the middle sealing ring 5. A lower sealing ring 6 is arranged in the lower through hole 31, and the outer ring wall of the lower sealing ring 6 fits with the inner wall of the lower through hole 31, the inner ring wall of the lower sealing ring 6 fits with the side wall of the pole 1, and the top wall of the lower sealing ring 6 abuts against the bottom wall of the middle sealing ring 5. First, the lower sealing ring 6 is sleeved on the pole 1, and the lower sealing ring 6 is restricted by the gradually increasing outer diameter of the pole 1, and stops moving down after the lower sealing ring 6 moves to a certain position. Then the lower top cover 3 is sleeved on the pole 1 through the upper through hole 21, so that the lower sealing ring 6 is located in the lower through hole 31, and at this time, the lower sealing ring 6 abuts between the lower top cover 3 and the pole 1 to form a seal. After that, the middle sealing ring 5 is first sleeved on the pole 1, and then the upper sealing ring 4 is sleeved on the pole 1, and finally the upper cover 2 is sleeved on the pole 1 through the upper through hole 21. When the bottom of the upper cover 2 and the top of the lower cover 3 fit each other, and the upper cover 2 and the lower cover 3 are fastened together, the middle sealing ring 5 forms a seal in the upper annular groove 22 and the lower annular groove 32, and the upper sealing ring 4 forms a seal between the upper cover 2 and the pole 1. At the same time, the middle sealing ring 5 located in the upper annular groove 22 and the lower annular groove 32 is limited by the upper cover 2 and the lower cover 3, so that the middle sealing ring 5 is not easy to rebound.

[0033] In order to prevent the upper sealing ring 4 from moving upward, refer to Figure 1 and Figure 2 A limiting ring 41 is integrally formed in the upper through hole 21, and the internal through hole of the limiting ring 41 is for inserting the pole 1. When the limiting ring 41 is sleeved on the pole 1, the bottom wall of the limiting ring 41 abuts against the top wall of the upper sealing ring 4, forming a limit for the upper sealing ring 4, so that the upper sealing ring 4 is not easy to move upward.

[0034] In order to fasten the upper cover 2 and the lower cover 3 together, refer to Figure 1, a plurality of locking grooves 72 are provided on the bottom wall of the lower top cover 3, and a plurality of locking holes 71 are provided on the upper top cover 2, and the locking holes 71 are arranged opposite to the locking grooves 72. A locking bolt 7 is arranged in the locking hole 71, and the locking bolt 7 passes through the locking hole 71, and the locking bolt 7 is threadedly connected with the locking groove 72. A clearance ring groove 73 is provided on the inner wall of the locking hole 71, and the clearance ring groove 73 passes through the top wall of the upper top cover 2, and the clearance ring groove 73 is provided for the locking bolt 7 to be inserted. When the upper top cover 2 and the lower top cover 3 are pressed against the middle sealing ring 5, the locking bolt 7 is passed through the locking hole 71 and then threadedly connected with the locking groove 72, and then the upper top cover 2 and the lower top cover 3 are fastened together by the locking bolt 7. After the locking bolt 7 fastens the upper top cover 2 and the lower top cover 3 together, the top end of the locking bolt 7 is located in the clearance ring groove 73, so that the top end of the locking bolt 7 is not easy to protrude from the top of the upper top cover 2.

[0035] In order to facilitate the insertion of the locking bolt 7 from the locking hole 71 into the locking groove 72, Figure 1 A positioning pin 8 is installed on the top of the lower cover 3, and a positioning groove 81 is provided at the bottom of the upper cover 2, and the positioning groove 81 is used for inserting the positioning pin 8. When the upper cover 2 is sleeved on the pole 1, the positioning pin 8 is inserted into the positioning groove 81, and then the locking hole 71 and the locking groove 72 are placed opposite to each other, so that the locking bolt 7 is inserted from the locking hole 71 into the locking groove 72.

[0036] The implementation principle of the assembly structure of the top cover and the pole 1 for preventing the rebound of the sealing ring in the embodiment of the present application is as follows: first, the lower sealing ring 6 is sleeved on the pole 1. The lower sealing ring 6 is restricted by the gradually increasing outer diameter of the pole 1. After the lower sealing ring 6 moves to a certain position, it stops moving downward. Then the lower top cover 3 is sleeved on the pole 1 through the upper through hole 21. When the lower top cover 3 abuts against the shell, the lower sealing ring 6 abuts in the lower through hole 31. At this time, the lower sealing ring 6 squeezes between the lower top cover 3 and the pole 1 to form a seal. After that, the middle sealing ring 5 is sleeved on the pole 1 first, and then the upper sealing ring 4 is sleeved on the pole 1. Finally, the upper top cover 2 is sleeved on the pole 1 through the upper through hole 21. In the process of the upper top cover 2 moving along the pole 1, the limit ring 41 forms a pressure on the upper sealing ring 4, so that the upper sealing ring 4 squeezes the middle sealing ring 5 to approach the lower sealing ring 6. When the bottom of the upper cover 2 and the top of the lower cover 3 fit each other, and the upper cover 2 and the lower cover 3 are fastened together, the upper sealing ring 4 abuts between the upper through hole 21 and the pole 1, and the upper sealing ring 4 deforms to form a seal for the gap between the upper cover plate and the pole 1; the middle sealing ring 5 abuts against the upper ring groove 22 and the lower ring groove 32, and the middle sealing ring 5 deforms to form a seal for the gap between the upper cover plate, the lower cover plate and the pole 1; the lower sealing ring 6 abuts between the lower through hole 31 and the pole 1, and the lower sealing ring 6 deforms to form a seal for the gap between the lower cover plate and the pole 1. At the same time, when the middle sealing ring 5 has an upward movement trend, it is restricted by the top wall of the upper ring groove 22, and when the middle sealing ring 5 has a downward movement trend, it is restricted by the bottom wall of the lower ring groove 32, and then the upper cover 2 and the lower cover 3 restrict the movement of the middle sealing ring 5, so that the middle sealing ring 5 is not easy to rebound, so as to improve the assembly quality of the top cover and the pole 1.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A top cover and pole assembly structure for preventing a sealing ring from rebounding, comprising a pole (1), wherein an outer side wall of the pole (1) is arranged obliquely, Features: The pole (1) is sleeved with a lower cover (3) and an upper cover (2); the upper cover (2) is located above the lower cover (3); the upper cover (2) and the lower cover (3) are detachably connected; a middle sealing ring (5) is arranged between the upper cover (2) and the lower cover (3); the inner ring wall of the middle sealing ring (5) and the outer wall of the pole (1) are in contact with each other; the top wall of the middle sealing ring (5) and the bottom wall of the upper cover (2) are in contact with each other; and the bottom wall of the middle sealing ring (5) and the top wall of the lower cover (3) are in contact with each other.

2. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 1, Features: An upper through hole (21) is formed through the upper top cover (2), and a lower through hole (31) is formed through the lower top cover (3). The upper through hole (21) and the lower through hole (31) are arranged opposite to each other. The pole (1) is inserted into the upper through hole (21) and the lower through hole (31). An upper sealing ring (4) is arranged in the upper through hole (21). The outer ring wall of the upper sealing ring (4) and the inner wall of the upper through hole (21) are in contact with each other. The inner ring wall of the upper sealing ring (4) and the side wall of the pole (1) are in contact with each other. A lower sealing ring (6) is arranged in the lower through hole (31). The outer ring wall of the lower sealing ring (6) and the inner wall of the lower through hole (31) are in contact with each other. The inner ring wall of the lower sealing ring (6) and the side wall of the pole (1) are in contact with each other.

3. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 2, Features: A limiting ring (41) is fixedly arranged in the upper through hole (21); the limiting ring (41) is sleeved on the pole (1); and the bottom wall of the limiting ring (41) abuts against the top wall of the upper sealing ring (4).

4. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 2, Features: An upper ring groove (22) is formed on the inner wall of the upper through hole (21), and the upper ring groove (22) passes through the bottom wall of the upper top cover (2). A lower ring groove (32) is formed on the inner wall of the lower through hole (31), and the lower ring groove (32) passes through the top wall of the lower top cover (3). The upper ring groove (22) and the lower ring groove (32) are arranged opposite to each other, and the middle sealing ring (5) is arranged in the upper ring groove (22) and the lower ring groove (32).

5. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 4, Features: The bottom wall of the upper sealing ring (4) and the top wall of the upper annular groove (22) are in contact with the top wall of the middle sealing ring (5); the top wall of the lower sealing ring (6) and the bottom wall of the lower annular groove (32) are in contact with the bottom wall of the middle sealing ring (5); the side wall of the upper annular groove (22) and the side wall of the lower annular groove (32) are in contact with the outer annular wall of the middle sealing ring (5); and the side wall of the pole (1) is in contact with the inner annular wall of the middle sealing ring (5).

6. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 1, Features: A plurality of locking grooves (72) are provided on the bottom wall of the lower top cover (3), and a plurality of locking holes (71) are provided through the upper top cover (2). The locking holes (71) and the locking grooves (72) are arranged opposite to each other, and a locking bolt (7) is provided in the locking hole (71). The locking bolt (7) passes through the locking hole (71), and the locking bolt (7) is threadedly connected to the locking groove (72).

7. A top cover and pole assembly structure for preventing sealing ring rebound according to claim 6, Features: The inner wall of the locking hole (71) is provided with a clearance ring groove (73), the clearance ring groove (73) penetrates the top wall of the upper cover (2), and the locking bolt (7) is inserted into the clearance ring groove (73).

8. The top cover and pole assembly structure for preventing the sealing ring from rebounding according to claim 1, Features: A positioning pin (8) is fixedly arranged on the top of the lower cover (3), and a positioning groove (81) is provided on the bottom of the upper cover (2), wherein the positioning pin (8) is inserted into the positioning groove (81).

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