CN-224217581-U - Connection structure of rubber coating ring and top cover piece

Abstract

The utility model relates to the technical field of battery cover plates, and discloses a connection structure of an encapsulation ring and a top cover plate, which comprises the top cover plate, wherein a pole column hole for a pole column to pass through is formed in the top cover plate, the pole column is provided with a middle section penetrating through the pole column hole, the periphery of the middle section is wrapped with the encapsulation ring, the periphery of the encapsulation ring is provided with a notch groove, an upper plastic part is embedded in the pole column hole, the periphery of the encapsulation ring is wrapped by the upper plastic part, the notch groove is embedded in the periphery of the encapsulation ring, the pole column, the top cover plate, the encapsulation ring and the upper plastic part are fixedly combined into a whole, the notch groove is formed in the process of forming the upper plastic part by injection molding, the upper plastic part is combined with a top cover plate into a whole, the torque value is increased, the service life of the upper plastic is not fallen after the upper plastic fatigue test, and the anti-rotation capability of the pole column is improved.

Inventors

• ZHANG YAHAO
• LIU JUNWEI

Assignees

• 广东力宏精密科技有限公司

Dates

Publication Date

20260508

Application Date

20250401

Claims (6)

1. 1. The connecting structure of the rubber coating ring and the top cover plate is characterized by comprising the top cover plate, wherein a pole hole for a pole to pass through is formed in the top cover plate, and the pole is provided with a middle section penetrating into the pole hole; an upper plastic part is embedded in the pole hole, the periphery of the rubber coating ring is wrapped by the upper plastic part, the upper plastic part is embedded in the notch groove, and the pole, the top cover plate, the rubber coating ring and the upper plastic part are fixedly combined into a whole; the periphery of the rubber coating ring is provided with a plurality of notch grooves which are circumferentially arranged at intervals along the periphery of the rubber coating ring; The rubber coating ring comprises a peripheral ring wrapped on the periphery of the middle section and an upper ring wrapped on the top of the middle section from top to bottom, and the notch groove is formed on the peripheral ring and extends to the upper ring; the bottom of the notch groove is formed with a step which is arranged in an upward opening way, and the step is formed on the peripheral ring; the encapsulating ring has a lower ring surrounding the bottom of the middle section from bottom to top.
2. 2. The attachment structure of the encapsulating ring to the cover sheet according to claim 1, wherein the upper ring, the outer peripheral ring and the lower ring are integrally formed by injection molding.
3. 3. The attachment structure of the grommet and the cover sheet according to claim 1, wherein the bottom of the middle section has a recessed ring arranged to be recessed upward, and the lower ring is embedded in the recessed ring and is fixedly integrated with the middle section.
4. 4. A connection structure of a grommet and a top cover sheet according to any one of claims 1 to 3, wherein the top of the top cover sheet is convexly provided with an enclosing wall, the enclosing wall surrounds the periphery of the pole hole, and the upper plastic member wraps the enclosing wall and is fixedly combined with the enclosing wall into a whole.
5. 5. The attachment structure of the grommet and the cover sheet according to claim 4, wherein the surrounding wall is in a bent shape.
6. 6. The structure for connecting the encapsulating ring and the top cover plate according to any one of claims 1 to 3, wherein a spacer ring is arranged between the periphery of the encapsulating ring and the inner side wall of the pole hole, the upper plastic part is provided with an embedded ring which is filled and embedded in the spacer ring, the embedded ring wraps the periphery of the encapsulating ring, is embedded in the notch groove and is abutted against the inner side wall of the pole hole.

Description

Connection structure of rubber coating ring and top cover piece Technical Field The utility model relates to the technical field of battery cover plates, in particular to a connecting structure of an encapsulation ring and a top cover plate. Background The battery cover plate is an important component part in the battery and is provided with a top cover plate, a pole column is penetrated in the top cover plate, and the periphery of the pole column is wrapped with a rubber-covered ring. In the assembly of the battery cover plate, an upper plastic part is required to be formed by injection molding, and the upper plastic part is connected with the top cover plate and the rubber coating ring, so that the pole is fixedly connected to the top cover plate. In the prior art, the anti-rotation capability of the pole is critical, but the connection stability is difficult to meet the requirement because of the smooth connection between the upper plastic part and the rubber coating ring, and the upper plastic part and the rubber coating ring are easy to separate, so that the anti-rotation capability of the pole is poor. Disclosure of utility model The utility model aims to provide a connecting structure of an encapsulation ring and a top cover piece, and aims to solve the problem of poor anti-rotation capability of a pole in the prior art. The utility model discloses a connecting structure of an encapsulation ring and a top cover plate, which comprises the top cover plate, wherein a pole hole for a pole to pass through is formed in the top cover plate, and the pole is provided with a middle section penetrating in the pole hole; The pole is characterized in that an upper plastic part is embedded in the pole hole, the periphery of the rubber coating ring is wrapped by the upper plastic part, the gap groove is embedded in the upper plastic part, and the pole, the top cover plate, the rubber coating ring and the upper plastic part are fixedly combined into a whole. Further, a plurality of notch grooves are formed in the periphery of the rubber coating ring, and the notch grooves are circumferentially arranged at intervals along the periphery of the rubber coating ring. Further, the encapsulation ring comprises a peripheral ring wrapped around the periphery of the middle section and an upper ring wrapped on the top of the middle section from top to bottom, and the notch groove is formed on the peripheral ring and extends to the upper ring. Further, the bottom of the notch groove is formed in a step arranged open upward, and the step is formed in the peripheral ring. Further, the encapsulating ring has a lower ring surrounding the bottom of the middle section from bottom to top. Further, the upper ring, the outer peripheral ring and the lower ring are formed by integral glue injection. Further, the bottom of the middle section is provided with a groove ring which is arranged in an upward concave manner, and the lower ring is embedded in the groove ring and is fixedly combined with the middle section into a whole. Further, the top of the top cover plate is convexly provided with an enclosing wall, the enclosing wall surrounds the periphery of the pole hole, and the upper plastic part wraps the enclosing wall and is fixedly combined with the enclosing wall into a whole. Further, the surrounding wall is in a bent shape. Furthermore, a spacer ring is arranged between the periphery of the encapsulation ring and the inner side wall of the pole hole, the upper plastic part is provided with an embedded ring which is filled and embedded in the spacer ring, the periphery of the encapsulation ring is wrapped by the embedded ring, and the embedded ring is embedded in the notch groove and is abutted against the inner side wall of the pole hole. Compared with the prior art, the connecting structure of the rubber coating ring and the top cover plate has the advantages that the notch groove is formed in the periphery of the rubber coating ring, the upper plastic part can be embedded into the notch groove in the injection molding process, the upper plastic part is combined with the top cover plate into a whole, the torsion value is increased, the upper plastic part cannot fall off after the fatigue test of the upper plastic part, the service life of the upper plastic part is prolonged, and the anti-rotation capability of the pole is improved. Drawings FIG. 1 is a schematic cross-sectional view of the attachment structure of the grommet and the cover sheet provided by the present utility model; FIG. 2 is a schematic cross-sectional view of a pole to encapsulating ring connection provided by the present utility model; fig. 3 is a schematic perspective view of the connection of the polar post and the encapsulating ring provided by the utility model. Detailed Description The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of th