Clamping type check ring
By designing a snap-on retaining ring and adopting a pouring port and an elastomer structure, the difficulty of welding and fixing the inner retaining ring of the pulley is solved, and multiple disassembly and assembly are achieved, which is stable and easy to install, and reduces costs and material consumption.
Patent Information
- Application Number
- CN202422843025.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the prior art, pulley inner retaining rings need to be purchased in pairs and fixed by welding, which results in difficulty in disassembly and maintenance, large material consumption, cumbersome installation and high cost.
A snap-fit retaining ring is designed, which adopts a pouring port, a positioning groove and an elastic body arranged on the retaining ring body, which are connected through a pouring channel. The elastic body is used to increase the rebound performance, and multiple disassembly and assembly are achieved without welding installation.
The retaining ring can be disassembled and assembled multiple times stably, which reduces the installation difficulty and material consumption, and improves the service life and installation efficiency.
Smart Images
Figure CN223483350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of retaining ring technology, and in particular to a snap-fit retaining ring. Background Technology
[0002] To better protect the normal operation of synchronous pulleys during operation, manufacturers equip them with pulley retaining rings during production. Currently, conventional pulley retaining rings use a two-semi-circular structure, which is locked together and welded in place. When purchasing materials, pulley retaining rings need to be purchased in pairs. During pulley installation, the two retaining rings also need to be welded together. Once welded in place, the retaining rings cannot be removed. If the pulley needs to be disassembled for repair or replacement, the entire welded structure must be destroyed, resulting in significant material consumption, cumbersome installation, and high personnel costs. Utility Model Content
[0003] The purpose of this invention is to provide a snap-fit retaining ring to solve the problems existing in the prior art.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A snap-fit retaining ring includes a retaining ring body with a vertically oriented axis. The retaining ring body has an internal cavity structure and an opening at its top. The opening includes a left cross-section and a right cross-section, which are spaced apart. A first pouring port is located at the center of the left cross-section, and a first positioning groove is provided on the left cross-section. A gating channel extends downwards and to the left from the first pouring port, and the gating channel is axially aligned with the retaining ring body. A second pouring port is located at the center of the right cross-section at the opening, and a second positioning groove is provided on the right cross-section. A gating channel extends downwards and to the right from the second pouring port. The first pouring port and the second pouring port are connected through the gating channel, which is arranged in an equally spaced wavy pattern. An elastic body with the same shape as the gating channel is fixedly installed inside the gating channel. The elastic body is used to increase the resilience of the retaining ring body.
[0006] By adopting the above technical solution, the opening of the retaining ring body adds two new surfaces: a left section and a right section. Both sections are equipped with a pouring gate and a positioning groove. The positioning groove is used to cooperate with the positioning mechanism on the hot nozzle for positioning, while the pouring gate is used to accommodate the hot nozzle. An elastomer is integrally formed within the pouring channel. This elastomer, like the pouring channel, is arranged in an equally spaced wavy pattern around the retaining ring body axially. The elastomer effectively increases the resilience of the retaining ring body. Since the retaining ring body may be disassembled and reassembled multiple times during installation and maintenance, the elastomer extends its service life, allowing it to maintain good elasticity after multiple disassemblies and reassemblies, enabling it to be fixed and limited. The reason for the equally spaced wavy pattern is that this elastomer only occupies 1 / 3 of the compression height space, while providing a larger deformation amount within a limited space and under the same load specifications. Installation is also very convenient; it can be installed simply by tapping with an inlet cone.
[0007] In a further embodiment, the periphery of the left section is chamfered, and the periphery of the right section is chamfered.
[0008] By adopting the above technical solution, the chamfer can help the retaining ring body to be installed on the pulley more smoothly and is also more convenient to disassemble, without affecting its axial blocking ability.
[0009] In a further embodiment, a thermochromic coating is provided on the lower outer side of the retaining ring body.
[0010] By adopting the above technical solution, the thermochromic coating can change color after pouring, which provides better indication for operators, enabling them to determine the pouring status and cooling effect after pouring. At the same time, since the opening of the retaining ring body is small, operators may not be able to identify it immediately. However, with the thermochromic coating of bright color, operators can immediately find the opening facing the thermochromic coating, thereby increasing the efficiency of installation.
[0011] In a further embodiment, the left and right cross-sections are arranged in parallel.
[0012] By adopting the above technical solution, the parallel arrangement of the two facilitates the casting after the retaining ring body is positioned.
[0013] In a further embodiment, the retaining ring body is made of 65Mn material.
[0014] By adopting the above technical solution, 65Mn steel plate has excellent wear resistance and tensile strength. The retaining ring body made of 65Mn is suitable for manufacturing wear-resistant parts and springs and other high-strength working environments.
[0015] In a further embodiment, the elastomer is made of PU.
[0016] By adopting the above technical solutions, polyurethane (PU) elastomer is a type of polymer material that combines the properties of rubber and plastic. When used as an elastomer to support the retaining ring body, it has good resilience. PU elastomer is divided into three types according to processing characteristics: casting type, thermoplastic type, and compounding type. It is widely used in coal mining, petrochemical, machinery manufacturing, and aerospace fields, playing an important role that cannot be replaced by other materials.
[0017] In summary, the present invention has the following beneficial effects:
[0018] 1. By incorporating an elastomer, the resilience of the retaining ring body can be effectively increased. Since the retaining ring body may be disassembled and reassembled multiple times during installation and maintenance, the elastomer can maintain good elasticity after multiple disassemblies and reassemblies, enabling it to be fixed and limited, thus increasing its service life.
[0019] 2. By using temperature-sensitive coatings, operators can more intuitively see temperature changes and thus understand which stage of the casting process the retaining ring body is in, thereby improving the intuitiveness of installation. Attached Figure Description
[0020] Figure 1 This is an overall schematic diagram of a snap-fit retaining ring according to this utility model;
[0021] Figure 2 This is a schematic diagram illustrating the internal structure of the retaining ring body in a snap-fit retaining ring according to this utility model.
[0022] In the figure, 1 is the retaining ring body; 2 is the first pouring gate; 3 is the pouring channel; 4 is the second pouring gate; 5 is the elastomer; and 6 is the thermochromic coating. Detailed Implementation
[0023] The present invention will be further described in detail below with reference to the accompanying drawings.
[0024] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.
[0025] Example:
[0026] like Figure 1-Figure 2 As shown, a snap-fit retaining ring includes a retaining ring body 1 made of 65Mn material. The axis of the retaining ring body 1 is vertically arranged, and a cavity structure is provided inside the retaining ring body 1. An opening is provided at the top of the retaining ring body 1, and the opening includes a left section and a right section, which are spaced apart. A first pouring port 2 is provided at the middle position of the left section, and a first positioning groove is provided on the left section. A gating channel 3 extends from the first pouring port 2 to the lower left and is arranged along the axial direction of the retaining ring body 1. A second pouring port 4 is provided at the middle position of the right section at the opening, and a second positioning groove is provided on the right section. A gating channel 3 extends from the second pouring port 4 to the lower right. The first pouring port 2 and the second pouring port are connected through the gating channel 3. The gating channel 3 is arranged in an equally spaced wavy pattern. An elastomer 5, made of PU, is fixedly installed to match the shape of the injection runner 3. The elastomer 5 increases the resilience of the retaining ring body 1. The left and right cross-sections are chamfered. A thermochromic coating 6 is applied to the lower outer side of the retaining ring body 1. The left and right cross-sections are parallel. Through the opening on the retaining ring body 1, it can achieve a stop without welding, using the installation dimensions and the elastic tensor after the notch is closed, thus preventing axial displacement of the belt during operation. Installation can be done simply by tapping with an inlet cone. The chamfers on the left and right cross-sections prevent scratching the workpiece during tapping. The positioning grooves on the left and right cross-sections also help the injection hot nozzle to position quickly. The elastomer 5 effectively improves the resilience of the retaining ring body 1, extending its service life.
[0027] Specific implementation process: First, the dual-head hot nozzles are set at the left and right sections, corresponding to the sprue. Then, the high-heat polyurethane colloid is injected into the sprue 3. Although polyurethane colloid is used in this process, in fact any material with good resilience and that can be injected into the sprue through injection molding can achieve the above function. The polyurethane colloid meanders down the sprue 3 from both ends until it is completely filled. At this time, the thermochromic coating 6 under the retaining ring body 1 also begins to change color, indicating to the operator that the pouring is complete. After cooling, the elastomer 5 is fixedly formed in the sprue 3. The polyurethane elastomer 5 can effectively increase the resilience of the retaining ring body 1 and prevent the retaining ring body 1 from deforming, greatly improving its efficiency and making installation very simple.
[0028] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.
[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A snap-fit retaining ring, comprising a retaining ring body (1), characterized in that: The retaining ring body (1) is vertically oriented, and has a cavity structure inside. An opening is located at the top of the retaining ring body (1), comprising a left cross-section and a right cross-section, which are spaced apart. A first pouring port (2) is located in the middle of the left cross-section, and a first positioning groove is provided on the left cross-section. A gating channel (3) extends downwards and to the left from the first pouring port (2), and the gating channel (3) is oriented along the axial direction of the retaining ring body (1). A second pouring port (4) is provided at the middle position of the right section of the opening. A second positioning groove is provided on the right section. The second pouring port (4) extends to the lower right and has a pouring channel (3). The first pouring port (2) and the second pouring hole are connected through the pouring channel (3). The pouring channel (3) is arranged in an equally spaced wave shape. An elastic body (5) with the same shape as the pouring channel (3) is fixedly installed in the pouring channel (3). The elastic body (5) is used to increase the rebound performance of the retaining ring body (1).
2. The snap-fit retaining ring according to claim 1, characterized in that: The left section has a chamfered edge, and the right section has a chamfered edge.
3. The snap-fit retaining ring according to claim 1, characterized in that: The lower outer side of the retaining ring body (1) is provided with a thermochromic coating (6).
4. The snap-fit retaining ring according to claim 1, characterized in that: The left and right cross-sections are arranged in parallel.
5. A snap-fit retaining ring according to claim 1, characterized in that: The material of the retaining ring body (1) is 65Mn.
6. The snap-fit retaining ring according to claim 1, characterized in that: The elastomer (5) is made of PU.