Rubber ring assembly mounting device applied to thermal reaction furnace
By designing the rubber ring assembly installation device, the combination of fixed unit, rubber ring positioning unit and limiting unit is used to solve the problem of distance error of rubber ring parts, and achieve uniform support and efficient production of multiple battery cells.
Patent Information
- Application Number
- CN202422483136.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-15
AI Technical Summary
The distance error between the rubber ring parts in existing rubber ring components is large, making it difficult to have good support for each battery during the transportation of multiple battery cells, and the manual sleeve efficiency is low.
A rubber ring assembly installation device is designed, including a fixing unit, a rubber ring positioning unit and a limiting unit. By setting an avoidance groove and a containment groove on the fixing unit, the position of the rubber ring member is fixed on the fixed link is achieved by ensuring that the position of the rubber ring member is fixed on the fixed link, and the position of the fixed link is kept constant by using the limiting unit to eliminate distance errors.
It is achieved that each cell has good support during the transportation process of multiple cells, which improves the production efficiency and stability of the rubber ring assembly, avoids manual adjustment steps, and improves production efficiency.
Smart Images

Figure CN223216687U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of component assembly, in particular to a rubber ring component installation device used in a thermal reaction furnace. Background Art
[0002] An apron assembly is a structure formed by attaching an apron to a fixed connecting rod. During the solar cell production process, the apron assembly is installed in a thermal reactor. The fixed connecting rod rotates around its axis or is driven synchronously with a chain. Due to the inherent fragility of the solar cells, they cannot directly contact the fixed connecting rod. To reduce the contact area with the solar cells, the solar cells need to be placed on the apron. In existing production practices, the apron members in the apron assembly are manually attached to the fixed connecting rod, making it impossible to ensure the relative position of the apron members on different apron assemblies remains constant. When transporting a single cell in a thermal reactor, this issue does not significantly impact the transport of the cells. However, with increasing demands for production efficiency, it is now necessary to transport multiple cells simultaneously. Due to the large errors in the distance between the apron members in existing apron assemblies, it is difficult to achieve adequate support for each cell. Furthermore, if the specifications for the workers' attachment are further restricted, the production efficiency of the apron assembly will be significantly reduced. Utility Model Content
[0003] In order to overcome the defects in the prior art, an embodiment of the present invention provides a rubber ring assembly installation device applied to a thermal reaction furnace, which is used to solve one or more of the above problems.
[0004] The embodiment of the present application discloses: a rubber ring assembly installation device used in a thermal reactor, comprising: a fixing unit, which extends in a straight line direction; a rubber ring positioning unit, which is arranged on the fixing unit, and has an avoidance groove opened along the extension direction of the fixing unit, the avoidance groove can be used to place a fixed connecting rod, and the avoidance groove is provided with a receiving groove recessed into the interior thereof, and a plurality of receiving grooves are spaced apart in the extension direction of the fixing unit; and a rubber ring member, which can be placed in the receiving groove.
[0005] Furthermore, it also includes a limiting unit, a positioning unit is arranged on the fixing unit, the positioning unit is located on one side of the rubber ring positioning unit, and the positioning unit and the avoidance groove are correspondingly arranged in the extension direction of the fixing unit.
[0006] Furthermore, the rubber ring fixing unit includes a first rubber ring fixing part and a second rubber ring fixing part connected to the first rubber ring fixing part, wherein multiple first rubber ring fixing parts are arranged on the fixing unit at intervals along the extension direction of the fixing unit, and each first rubber ring fixing part is connected to the second rubber ring fixing part.
[0007] Furthermore, the first rubber ring fixing component and the second rubber ring fixing component both have an avoidance groove; the first rubber ring fixing component and the second rubber ring fixing component form an accommodating groove, and at least one of the first rubber ring fixing component and the second rubber ring fixing component has a bottom wall of the accommodating groove.
[0008] Furthermore, the first rubber ring fixing component has a first connecting portion and a second connecting portion connected to each other, wherein the first connecting portion is connected to the fixing unit, the second connecting portion is connected to the second rubber ring fixing component, and the first connecting portion and the second connecting portion are perpendicular to each other.
[0009] Furthermore, the distance between the first wall surface of the first rubber ring fixing component and the second wall surface of the second rubber ring fixing component located on both sides of the accommodating groove is slightly greater than the width of the rubber ring.
[0010] Furthermore, the difference between the inner diameter and the outer diameter of the rubber ring is slightly greater than the depth of the accommodating groove.
[0011] The beneficial effects of the utility model are as follows:
[0012] 1. The position of the rubber ring parts is fixed by multiple fixed accommodating grooves, so that after the fixed connecting rod is passed through the avoidance groove, multiple rubber ring parts with constant relative distances are mounted on the fixed connecting rod, thereby making the distances between the rubber ring parts on different rubber ring assemblies formed thereby remain the same, thereby eliminating the distance error between different rubber ring assemblies, so that the rubber ring parts on different rubber ring assemblies can have the same contact position with the battery cells during the transportation of multiple battery cells, thereby achieving the effect of better support for each of the multiple battery cells. At the same time, the step of specifically adjusting the distances between the rubber ring parts of different rubber ring assemblies is avoided, and the production efficiency of the rubber ring assemblies is also improved.
[0013] 2. Different fixed links can be limited to fixed positions by the limiting unit after passing through the avoidance groove, thereby ensuring that the positions of the rubber ring parts installed on different fixed links can be exactly the same, so that the relative positions of different fixed links and the rubber ring parts remain constant under the limiting action of the limiting unit, achieving the effect of the same position of the rubber ring parts on the same rubber ring assembly.
[0014] 3. The first rubber ring fixing member and the second rubber ring fixing member are detachable and have good connection strength. In addition, by changing the spacing between the first rubber ring fixing members, the rubber ring members on the rubber ring assembly can be changed to any spacing.
[0015] 4. The contact area between the first connecting portion and the fixing unit is larger, and the contact area between the second connecting portion and the second rubber ring fixing piece is larger, so that the connection effects between the first rubber ring fixing piece and the fixing unit and the second rubber ring fixing piece are better.
[0016] 5. When the rubber ring is placed in and taken out of the receiving groove, the influence of the first wall and the second wall on the rubber ring can be avoided, so that the rubber ring can have higher precision when placed in the receiving groove and when it leaves the receiving groove with the fixed connecting rod after being sleeved on the fixed connecting rod.
[0017] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 This is a structural diagram of a rubber ring assembly installation device applied to a thermal reaction furnace in an embodiment of the present utility model;
[0020] Figure 2 This is a detailed structural diagram of an apron assembly installation device applied to a thermal reaction furnace in an embodiment of the present utility model;
[0021] Figure 3 This is a structural diagram of the rubber ring positioning unit in an embodiment of the present utility model;
[0022] Figure 4 This is a schematic diagram of the matching relationship between the rubber ring positioning unit and the rubber ring member in the embodiment of the present utility model;
[0023] The figure marks of the above drawings are: 1. fixing unit; 2. rubber ring positioning unit; 21. avoidance groove; 22. accommodating groove; 23. first rubber ring fixing member; 231. first connecting part; 232. second connecting part; 233. first wall; 24. second rubber ring fixing member; 241. second wall; 3. rubber ring member; 4. limiting unit; 5. fixing connecting rod. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] like Figures 1 to 4As shown, a rubber ring assembly installation device for a thermal reactor according to this embodiment includes:
[0026] The fixing unit 1 extends in a straight line and is used to stabilize the position of the rubber ring 3 when the rubber ring positioning unit 2 is arranged thereon. The upper surface of the fixing unit 1 can be kept flat so that the rubber ring fixing unit 1 has good stability after being connected to the fixing unit 1.
[0027] The rubber ring positioning unit 2 is provided on the fixing unit 1. In this embodiment, the rubber ring positioning unit 2 is connected to the fixing unit 1 by bolts, so that the rubber ring positioning unit 2 and the fixing unit 1 have the advantage of easy disassembly and a better connection effect when connected. Of course, in other optional embodiments, the connection method between the rubber ring positioning unit 2 and the fixing unit 1 can be adjusted according to actual conditions. The rubber ring positioning unit 2 has an avoidance groove 21 opened along the extension direction of the fixing unit 1. The avoidance groove 21 can be used to place the fixing connecting rod 5. The avoidance groove 21 provides a placement space for the fixing connecting rod 5, so that the fixing connecting rod 5 can pass through the avoidance groove 21 and be placed in the avoidance groove 21. A accommodating groove 22 recessed into the interior of the avoidance groove 21 is provided, and an accommodating groove 22 is further provided inside the avoidance groove 21, so that the rubber ring member 3 can be stably placed in the accommodating groove 22, and thus the rubber ring member 3 can be stably placed in the avoidance groove 21. Multiple accommodating grooves 22 are arranged at intervals in the extension direction of the fixing unit 1, so that when the rubber ring member 3 is placed in the accommodating groove 22, different rubber ring members 3 can be arranged at intervals along the extension direction of the fixing unit 1 under the positioning action of the accommodating groove 22.
[0028] The rubber ring 3 can be placed in the receiving groove 22 and can be loosely matched with the fixed connecting rod 5, so that the rubber ring 3 is sleeved on the fixed connecting rod 5. In this embodiment, the rubber ring 3 is a fluorine rubber ring, so that it can adapt to the high-temperature drying oven environment. Of course, in other optional embodiments, the material of the rubber ring 3 can be adjusted according to actual needs.
[0029] In this embodiment, during the rubber ring installation process, a rubber ring 3 is first placed in each receiving groove 22, and then the fixing rod 5 is sequentially inserted into the rubber ring 3 along a preset straight line direction until all the rubber rings 3 are sleeved on the fixing rod 5. Here, the preset straight line direction is the extension direction of the fixing unit. After that, the fixing rod 5 is separated from the avoidance groove 21 to obtain the fixing rod 5 sleeved with the rubber ring 3, so that the rubber rings 3 in different fixing rods 5 can be in the same position, thereby improving the positional stability between the fixing rod 5 and the rubber ring 3. When transporting multiple battery cells, different receiving grooves 22 can be equally divided into different battery cells, so that the multiple battery cells have a more uniform support effect during the transportation process.
[0030] By means of the above structure, the position of the rubber ring part 3 is fixed by a plurality of fixed accommodating grooves 22, so that after the fixed connecting rod 5 is passed through the avoidance groove 21, the plurality of rubber ring parts 3 with a constant relative distance are mounted on the fixed connecting rod 5, thereby making the distance between the rubber ring parts 3 on the different rubber ring assemblies formed thereby remain the same, thereby eliminating the distance error between different rubber ring assemblies, so that the rubber ring parts 3 on different rubber ring assemblies can have the same contact position with the battery cells during the transportation of multiple battery cells, thereby achieving the effect of better support for each battery cell in the multiple battery cells. At the same time, the step of specifically adjusting the distance of the rubber ring parts 3 for different rubber ring assemblies is avoided, and the production efficiency of the rubber ring assemblies is also improved.
[0031] Specifically, such as Figure 1 As shown, the embodiment also includes a limiting unit 4, which is arranged on the fixing unit 1 so that the limiting unit 4 can remain relatively stationary with the fixing unit 1 and the rubber ring positioning unit 2, thereby providing the limiting unit 4 with good stability. The limiting unit 4 is located on one side of the rubber ring positioning unit 2, and the limiting unit 4 and the avoidance groove 21 are arranged correspondingly in the extension direction of the fixing unit 1. Therefore, after the fixing link 5 is inserted into the avoidance groove 21, the limiting unit 4 can abut against one end of the fixing link 5, thereby limiting the fixing link 5. With the above structure, different fixing links 5 can be limited to a fixed position by the limiting unit 4 after passing through the avoidance groove 21, thereby ensuring that the position of the rubber ring 3 mounted on different fixing links 5 is exactly the same. Therefore, under the limiting action of the limiting unit 4, the relative position of different fixing links 5 and the rubber ring 3 remains constant, achieving the effect of the same position of the rubber ring 3 on the same rubber ring assembly.
[0032] Specifically, such as Figure 3 As shown, the rubber ring fixing unit 1 includes a first rubber ring fixing member 23 and a second rubber ring fixing member 24 connected to the first rubber ring fixing member 23, wherein multiple first rubber ring fixing members 23 are spaced apart on the fixing unit 1 along the extension direction of the fixing unit 1, so that different first rubber ring fixing members 23 can be connected to the fixing unit 1, and each first rubber ring fixing member 23 is connected to a second rubber ring fixing member 24. In this embodiment, the second rubber ring fixing member 24 is bolted to the first rubber ring fixing member 23. Of course, in other optional embodiments, the connection method of the first rubber ring fixing member 23 and the second rubber ring fixing member 24 can be adjusted according to actual needs. With the above structure, the first rubber ring fixing member 23 and the second rubber ring fixing member 24 are detachable and have good connection strength. In addition, by changing the spacing between the first rubber ring fixing members 23, the rubber ring members 3 on the rubber ring assembly can be changed to any spacing.
[0033] It is worth noting that, in this embodiment, Figure 1 and Figure 2 As shown, the first rubber ring fixing member 23 is fixedly connected to the fixing unit 1 by bolt connection. In other optional embodiments, after a movable slide rail is installed on the fixing unit 1, the first rubber ring fixing member 23 can be connected to the slide rail, so that the distance between different first rubber ring fixing members 23 can be changed accordingly on the slide rail.
[0034] Specifically, such as Figure 3 As shown, the first rubber ring fixing member 23 and the second rubber ring fixing member 24 both have an avoidance groove 21, thereby preventing the first rubber ring fixing member 23 or the second rubber ring fixing member 24 from interfering with the fixed link 5 during the insertion process of the fixed link 5. The first rubber ring fixing member 23 and the second rubber ring fixing member 24 form a receiving groove 22, and at least one of the first rubber ring fixing member 23 and the second rubber ring fixing member 24 has a bottom wall of the receiving groove 22. In an optional embodiment, as Figure 3 As shown, the bottom wall of the accommodating groove 22 may be located only on the first rubber ring fixing member 23. In another optional embodiment (not shown in the figure), the bottom wall of the accommodating groove 22 may be located only on the second rubber ring fixing member 24. In yet another optional embodiment (not shown in the figure), a portion of the bottom wall of the accommodating groove 22 may be located on the first rubber ring fixing member 23, and another portion may be located on the second rubber ring fixing member 24. It can be understood that by changing the size of the avoidance groove 21, a fixed connecting rod 5 of any size can be sleeved in the avoidance groove 21.
[0035] Specifically, such as Figure 3 As shown, the first rubber ring fixing member 23 includes a first connecting portion 231 and a second connecting portion 232 connected to each other. In this embodiment, the first connecting portion 231 and the second connecting portion 232 are integrally formed, thereby providing the first rubber ring fixing member 23 with greater strength. Of course, the first connecting portion 231 and the second connecting portion 232 can also be connected by other means such as bolt connection or clamping.
[0036] The first connecting portion 231 is connected to the fixing unit 1, and the second connecting portion 232 is connected to the second rubber ring fixing member 24. The first connecting portion 231 and the second connecting portion 232 are perpendicular to each other. This results in a larger contact area between the first connecting portion 231 and the fixing unit 1, and a larger contact area between the second connecting portion 232 and the second rubber ring fixing member 24, resulting in better connection between the first rubber ring fixing member 23 and the fixing unit 1 and the second rubber ring fixing member 24.
[0037] Specifically, such as Figure 4As shown, the distance between the first wall 232 of the first rubber ring fixing member 23 and the second wall 241 of the second rubber ring fixing member 24 on both sides of the receiving groove 22 is slightly larger than the width of the rubber ring, so that the width of the receiving groove 22 can be larger than the width of the rubber ring member 3. Preferably, the width difference is 0.05mm-0.3mm. At the same time, due to the presence of the first wall 232 and the second wall 241 in the extension direction of the fixing unit 1, the rubber ring member 3 can be limited in the extension direction of the fixing unit 1 by the cooperation of the first wall 232 and the second wall 241. With the above structure, the influence of the first wall 232 and the second wall 241 on the rubber ring member 3 can be avoided when the rubber ring member 3 is placed in and removed from the receiving groove 22, so that the rubber ring member 3 can have higher precision when placed in the receiving groove 22 and when it is sleeved on the fixing connecting rod 5 and leaves the receiving groove 22 with the fixing connecting rod 5.
[0038] Specifically, such as Figure 4 As shown, the difference between the inner diameter and the outer diameter of the rubber ring part 3 is slightly larger than the depth of the accommodating groove 22, which causes the inner ring part of the rubber ring part 3 to protrude from the accommodating groove 22, so that when the fixed link 5 is placed in the avoidance groove 21, the fixed link 5 and the rubber ring positioning unit 2 are isolated from each other, that is, the fixed link 5 can only contact the rubber ring part 3, thereby protecting the fixed link 5 and the rubber ring positioning unit 2.
[0039] The installation method of the above structure includes the following steps:
[0040] An avoidance groove 21 is provided along a preset straight line, and a receiving groove 22 is provided inside the avoidance groove 21 in a direction perpendicular to the preset straight line. The avoidance groove 21 can be used to place the fixed connecting rod 5. The avoidance groove 21 provides a placement space for the fixed connecting rod 5, so that the fixed connecting rod 5 can pass through the avoidance groove 21 and be placed in the avoidance groove 21. A receiving groove 22 is further provided inside the avoidance groove 21, so that the rubber ring member 3 can be stably placed in the receiving groove 22, and further the rubber ring member 3 can be stably placed in the avoidance groove 21. Multiple receiving grooves 22 are arranged at intervals in the extension direction of the fixed unit 1, so that when the rubber ring member 3 is placed in the receiving groove 22, different rubber ring members 3 can be arranged at intervals along the extension direction of the fixed unit 1 under the positioning effect of the receiving groove 22.
[0041] The plurality of rubber rings 3 are spaced apart and arranged in different receiving grooves 22 so that the inner circles of the plurality of rubber rings 3 correspond in a predetermined straight line direction. The rubber rings 3 can be placed in the receiving grooves 22 and can be loosely fitted with the fixed connecting rod 5, thereby enabling the rubber rings 3 to be sleeved on the fixed connecting rod 5. In this embodiment, the rubber rings 3 are fluorine rubber rings, so that they can adapt to the high-temperature drying oven environment. Of course, in other optional embodiments, the material of the rubber rings 3 can be adjusted according to actual needs.
[0042] The fixing links 5 are sequentially inserted into the rubber rings 3 along a preset straight line until all the rubber rings 3 are sleeved on the fixing links 5, thereby obtaining fixing links 5 sleeved with rubber rings 3. This allows the rubber rings 3 in different fixing links 5 to be in the same position, thereby improving the positional stability between the fixing links 5 and the rubber rings 3. When transporting multiple battery cells, different accommodating grooves 22 can be equally divided among different battery cells, thereby providing a more uniform support effect for the multiple battery cells during the transport process.
[0043] The fixed connecting rod 5 is separated from the avoidance groove 21 , thereby separating the rubber ring assembly from the avoidance groove 21 .
[0044] By means of the above method, the position of the rubber ring part 3 is fixed by means of a plurality of fixed accommodating grooves 22, so that after the fixed connecting rod 5 is passed through the avoidance groove 21, a plurality of rubber ring parts 3 with a constant relative distance are sleeved on the fixed connecting rod 5, thereby making the distances between the rubber ring parts 3 on the different rubber ring assemblies formed thereby remain the same, thereby eliminating the distance error between different rubber ring assemblies, so that the rubber ring parts 3 on different rubber ring assemblies can have the same contact position with the battery cells during the transportation of multiple battery cells, thereby achieving the effect of better support for each of the multiple battery cells. At the same time, the step of specifically adjusting the distance of the rubber ring parts 3 for different rubber ring assemblies is avoided, and the production efficiency of the rubber ring assemblies is also improved.
[0045] Specifically, the step of "inserting the fixed connecting rod 5 into the rubber ring 3 in sequence along a preset straight line direction until all the rubber rings 3 are sleeved onto the fixed connecting rod 5" includes the following steps:
[0046] After the rubber rings 3 are all sleeved onto the fixed links 5, the fixed links 5 are restrained at a preset position in the forward direction of the fixed links 5. This allows different fixed links 5 to be restrained at fixed positions after passing through the avoidance grooves 21, thereby ensuring that the positions of the rubber rings 3 sleeved on different fixed links 5 are exactly the same, so that the relative positions of different fixed links 5 and the rubber rings 3 remain constant under the restraining action.
[0047] Specifically, the step of "inserting the fixed connecting rod 5 into the rubber ring 3 in sequence along a preset straight line direction until all the rubber rings 3 are sleeved onto the fixed connecting rod 5" includes the following steps:
[0048] The fixed link 5 rotates about its circumference relative to the avoidance groove 21, so that when the rubber ring 3 is installed on the fixed link 5, only the fixed link 5 needs to be rotated, so that the rubber ring 3 is installed on the fixed link 5 in the receiving groove 22. The relative rotation between the fixed link 5 and the rubber ring 3 reduces damage to the rubber ring 3 during the installation process, thereby improving the yield rate of the rubber ring 3 in the rubber ring assembly.
[0049] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A rubber ring assembly installation device used in a thermal reactor, characterized in that: include: a fixing unit, wherein the fixing unit extends in a straight line direction; A rubber ring positioning unit, the rubber ring positioning unit is arranged on the fixing unit, the rubber ring positioning unit has an avoidance groove opened along the extension direction of the fixing unit, the avoidance groove can be used to place the fixing connecting rod, the avoidance groove is provided with a receiving groove recessed toward the inside thereof, and a plurality of the receiving grooves are arranged at intervals in the extension direction of the fixing unit; The rubber ring can be placed in the accommodating groove.
2. The rubber ring assembly installation device for a thermal reaction furnace according to claim 1, characterized in that: It also includes a limiting unit, which is arranged on the fixing unit. The limiting unit is located on one side of the rubber ring positioning unit. The limiting unit and the avoidance groove are correspondingly arranged in the extension direction of the fixing unit.
3. The rubber ring assembly installation device for a thermal reaction furnace according to claim 1, characterized in that: The rubber ring fixing unit includes a first rubber ring fixing part and a second rubber ring fixing part connected to the first rubber ring fixing part, wherein a plurality of the first rubber ring fixing parts are arranged on the fixing unit at intervals along the extension direction of the fixing unit, and each of the first rubber ring fixing parts is connected to the second rubber ring fixing part.
4. The rubber ring assembly installation device for a thermal reaction furnace according to claim 3, characterized in that: The first rubber ring fixing member and the second rubber ring fixing member both have the avoidance groove; The first rubber ring fixing component and the second rubber ring fixing component form the accommodating groove, and at least one of the first rubber ring fixing component and the second rubber ring fixing component has a bottom wall of the accommodating groove.
5. The rubber ring assembly installation device for a thermal reaction furnace according to claim 3, characterized in that: The first rubber ring fixing component has a first connecting portion and a second connecting portion connected to each other, wherein the first connecting portion is connected to the fixing unit, the second connecting portion is connected to the second rubber ring fixing component, and the first connecting portion and the second connecting portion are perpendicular to each other.
6. The rubber ring assembly installation device for a thermal reaction furnace according to claim 3, characterized in that: The distance between the first wall surface of the first rubber ring fixing component and the second wall surface of the second rubber ring fixing component located on both sides of the accommodating groove is slightly greater than the width of the rubber ring.
7. The rubber ring assembly installation device for a thermal reaction furnace according to claim 1, characterized in that: The difference between the inner diameter and the outer diameter of the rubber ring is slightly greater than the depth of the accommodating groove.