Alkaline battery current collector capable of preventing sealing ring from cracking

Abstract

The utility model discloses an alkaline battery current collector capable of preventing a sealing ring from cracking, which comprises a current collecting nail, the current collecting nail is provided with a head part and a needle body which are connected, the diameter of the needle body is less than or equal to the aperture of a central hole of the sealing ring of an alkaline battery, and an annular raised line is arranged on the peripheral surface of one section of the needle body corresponding to the sealing ring. The multiple annular protruding strips are distributed in the axial direction of the needle body at intervals, and each annular protruding strip is in interference fit with the sealing ring. The contact surface of the needle body and the sealing ring is reduced, and the friction force is weakened, so that the overall stress of the sealing ring is reduced when the flow collecting nail is inserted into the central hole of the sealing ring, and the risk that the sealing ring cracks when the flow collecting nail is inserted is reduced.

Description

Technical Field

[0001] The utility model relates to the field of alkaline battery structures, in particular to an alkaline battery collector capable of preventing a sealing ring from cracking. Background Art

[0002] In the manufacturing field of alkaline batteries, the collector is an important accessory of alkaline batteries. The diameter of the collector pin of the collector is usually larger than the diameter of the center hole of the sealing ring. During the assembly process of the battery collector, due to the interference fit between the sealing ring (plastic part) and the collector pin, the collector pin and the sealing ring fit tightly and have large friction. A larger axial external force needs to be applied to smoothly insert the collector pin into the center hole of the sealing ring. The sealing ring sometimes cracks, causing quality accidents and battery leakage. Utility Model Content

[0003] The utility model aims to provide an alkaline battery collector capable of preventing a sealing ring from cracking, which can reduce the risk of the sealing ring cracking when a current collecting nail is inserted.

[0004] The technical solution to achieve the purpose of the utility model is: an alkaline battery collector that prevents the sealing ring from cracking, including a current collecting nail, the current collecting nail having a connected head and a needle body, the diameter of the needle body is ≤ the center hole diameter of the sealing ring of the alkaline battery, and an annular convex strip is provided on the outer peripheral surface of a section of the needle body corresponding to the sealing ring, there are multiple annular convex strips, and they are distributed at intervals along the axial direction of the needle body, and each of the annular convex strips is interference fit with the sealing ring.

[0005] The contact surface between the needle body of the alkaline battery collector of the utility model and the sealing ring is reduced and the friction force is weakened, thereby reducing the overall force on the sealing ring when the current collecting nail is inserted into the center hole of the sealing ring and reducing the risk of the sealing ring cracking when the current collecting nail is inserted.

[0006] Furthermore, the annular convex strip is integrally formed with the needle body.

[0007] Furthermore, the cross section of the annular convex strip is preferably in an arc shape.

[0008] Furthermore, the annular convex strips are evenly arranged.

[0009] Furthermore, the outer diameter of the annular convex strip is 0.07 to 0.12 mm larger than the diameter of the central hole.

[0010] The needle body of the current collecting pin is coaxially inserted into the center hole of the sealing ring of the alkaline battery, and the head of the current collecting pin is located outside the center hole and is tightly attached to the end face of the sealing ring; an annular sealant storage groove is provided on the end face of the sealing ring that is in contact with the head, and the sealant storage groove is arranged around the center hole, and the head of the current collecting pin is covered on the sealant storage groove and its groove is covered. When installing the current collecting pin, the sealing of the fitting seam between the current collecting pin and the sealing ring is achieved by injecting sealant into the sealant storage groove. Furthermore, a number of sinks are evenly arranged along the circumference of the bottom of the sealant storage groove, and the outer end of each sink is connected to the sealant storage groove, and the inner end of the sink extends inward along the axial direction of the sealing ring to the side of the annular convex strip; the sealant storage groove and each sink are filled with sealant. The setting of the sink groove can not only increase the toughness of the sealing ring, but also increase the filling space of the sealant; when the current collecting nail is inserted into the center hole of the sealing ring, the annular protrusion and the sealing ring are interference fit, and the annular protrusion squeezes the sealing ring to deform it, causing the sink groove to narrow, so that the end of the sealant storage groove originally stored in the sink groove moves, so that the sealant in the annular groove is kept in excess, ensuring effective contact between the sealant and the bottom surface of the current collecting nail head and a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an axial cross-sectional structural diagram of the current collecting nail of the utility model;

[0012] Figure 2 This is an axial cross-sectional structural diagram of the sealing ring of the alkaline battery of the utility model;

[0013] Figure 3 This is a top view of the sealing ring of the alkaline battery of the utility model;

[0014] Figure 4 It is an axial cross-sectional structural diagram of the alkaline battery collector of the utility model. DETAILED DESCRIPTION

[0015] The preferred embodiment of the alkaline battery collector for preventing the sealing ring from cracking of the utility model is described in detail below in conjunction with the accompanying drawings.

[0016] Combination Figure 1 and Figure 2, an alkaline battery collector for preventing a sealing ring from cracking, comprising a current collecting nail 10, wherein the current collecting nail 10 has a head 11 and a needle body 12 connected to each other, wherein the diameter R of the needle body 12 is less than or equal to the aperture r of the central hole 21 of the sealing ring 20 of the alkaline battery, and an annular convex strip 13 is provided on the outer peripheral surface of a section of the needle body 12 corresponding to the sealing ring 20, wherein the annular convex strip 13 is provided in plurality and is spaced apart along the axial direction of the needle body 12, and the annular convex strip 13 is interference fit with the sealing ring 20.

[0017] Compared with the existing method in which the entire outer circumference of a section of the needle body 12 corresponding to the sealing ring 20 is interference fit with the sealing ring 20, the contact surface between the needle body 12 and the sealing ring 20 of the alkaline battery collector of the utility model is reduced and the friction force is weakened, thereby reducing the overall force on the sealing ring 20 when the current collecting nail 10 is inserted into the center hole 21 of the sealing ring 20, and reducing the risk of the sealing ring 20 cracking when the current collecting nail 10 is inserted.

[0018] Combination Figure 2 to Figure 4 The needle body 12 of the current collecting pin 10 is coaxially inserted into the center hole 21 of the sealing ring 20 of the alkaline battery, and the head 11 of the current collecting pin 10 is located outside the center hole 21 and is tightly attached to the end face of the sealing ring 20; an annular sealant storage groove 22 is opened on the end face of the sealing ring 20 that is in contact with the head 11, and the sealant storage groove 22 is arranged around the center hole 21, and the head 11 of the current collecting pin 10 is covered on the sealant storage groove 22 and its notch is covered.

[0019] When installing the current collecting nail 10 , the sealing glue is injected into the sealing glue storage groove 22 to achieve the sealing of the fitting gap between the current collecting nail 10 and the sealing ring 20 .

[0020] Further, such as Figure 1 , Figure 4 As shown, the annular convex strip 13 and the needle body 12 are integrally formed.

[0021] Further, such as Figure 1 , Figure 4 As shown, the cross section of the annular convex strip 13 is preferably in the shape of an arc. Of course, the cross section of the annular convex strip 13 can be, but is not limited to, in the shape of an arc, and can also be in other shapes such as a trapezoid, a square, etc.

[0022] Further, such as Figure 1 , Figure 4 As shown, the annular convex strips 13 are evenly arranged.

[0023] Further, combined with Figure 2 and Figure 4The outer diameter R' of the annular convex strip 13 is 0.07-0.12 mm larger than the diameter r of the central hole 21.

[0024] In addition, the alkaline battery collector of the utility model can also be improved as follows:

[0025] Combination Figure 2 to Figure 4 A plurality of sink grooves 23 are evenly arranged along the circumference of the bottom of the sealant storage groove 22, the outer end of each sink groove 23 is connected to the sealant storage groove 22, and the inner end of the sink groove 23 extends inwardly along the axial direction of the sealing ring 20 to the side of the annular convex strip 13; the sealant storage groove 22 and each sink groove 23 are filled with sealant. The setting of the sink groove 23 can not only increase the toughness of the sealing ring 20, but also increase the filling space of the sealant; when the current collecting pin 10 is inserted into the central hole 21 of the sealing ring 20, the annular protrusion 13 and the sealing ring 20 are interference fit, and the annular protrusion 13 squeezes the sealing ring 20 to deform it, causing the sink groove 23 to narrow, so that the end of the sealant storage groove 22 originally stored in the sink groove 23 moves, so that the sealant in the annular groove 22 remains excessive, ensuring the effective contact between the sealant and the bottom surface of the head 11 of the current collecting pin. Of course, the sealant storage groove 22 and the sink groove 23 may not be set on the sealing ring 20. When the sink groove 23 is set, the number of the sink groove 23 can be but is not limited to 8 as shown in the figure.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. An alkaline battery collector for preventing a sealing ring from cracking, comprising a current collecting nail, wherein the current collecting nail has a head and a needle body connected to each other, and is characterized in that: The diameter of the needle body is ≤ the center hole diameter of the sealing ring of the alkaline battery. A section of the outer peripheral surface of the needle body corresponding to the sealing ring is provided with an annular convex strip. There are multiple annular convex strips, which are distributed at intervals along the axial direction of the needle body, and each of the annular convex strips is interference fit with the sealing ring.

2. The alkaline battery current collector for preventing the sealing ring from cracking according to claim 1, characterized in that: The annular convex strip is integrally formed with the needle body.

3. The alkaline battery current collector for preventing the sealing ring from cracking according to claim 1, characterized in that: The cross section of the annular convex strip is in an arc shape.

4. The alkaline battery current collector for preventing the sealing ring from cracking according to claim 1, characterized in that: The annular convex strips are evenly arranged.

5. The alkaline battery current collector for preventing the sealing ring from cracking according to claim 1, characterized in that: The outer diameter of the annular convex strip is 0.07 to 0.12 mm larger than the diameter of the central hole.

6. The alkaline battery current collector for preventing the seal ring from cracking according to any one of claims 1 to 5, characterized in that: The needle body of the current collecting pin is coaxially inserted into the center hole of the sealing ring of the alkaline battery, and the head of the current collecting pin is located outside the center hole and tightly attached to the end face of the sealing ring; an annular sealant storage groove is provided on the end face of the sealing ring that is in contact with the head, and the sealant storage groove is arranged around the center hole, and the head of the current collecting pin is covered on the sealant storage groove and its notch is covered.

7. The alkaline battery current collector for preventing the sealing ring from cracking according to claim 6, characterized in that: Several sink grooves are evenly arranged along the circumference of the bottom of the sealant storage groove, the outer end of each sink groove is connected to the sealant storage groove, and the inner end of the sink groove extends inward along the axial direction of the sealing ring to the side of the annular convex strip; the sealant storage groove and each sink groove are filled with sealant.

Images