Pull ring connecting structure

Abstract

The utility model relates to a pull ring connecting structure which comprises a pull ring and a chuck, the pull ring is in a circular ring shape, a circle of annular limiting portion protruding inwards is arranged in an opening in the upper end of the pull ring, and a plurality of arc-shaped inserting grooves are evenly formed in the upper end of the pull ring and located above the annular limiting portion. The lower ends of the arc-shaped inserting grooves extend to the lower portion of the annular limiting portion, the lower portion of the chuck is cylindrical, limiting inserting blocks matched with the arc-shaped inserting grooves in a one-to-one mode are arranged at the lower end of the chuck around the circumference, the outer walls of the limiting inserting blocks are arc faces, and a circle of skirt edge is arranged on the portion, located above the limiting inserting blocks, of the lower portion of the chuck. According to the utility model, the dismounting difficulty between the pull ring and the chuck can be greatly reduced, the mounting efficiency is improved, and later maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a pull ring connection structure. Background Art

[0002] The prior art has disclosed a chuck with a publication number of CN109262003A, which includes a chuck body, a pull ring and a clamping assembly; a through hole running through the chuck body from top to bottom is provided, the pull ring is installed in the through hole, and a limiting portion protruding inward is provided on the top of the pull ring, and a groove is provided on the bottom of the clamping assembly, the groove can clamp the limiting portion and move up and down with the pull ring, and the groove can be separated from the limiting portion and move upward relative to the pull ring; the clamping assembly is an inner circle clamping assembly or an outer circle clamping assembly, the inner circle clamping assembly can clamp the inner circle of the part by moving downward, and can loosen the inner circle of the part by moving upward; the outer circle clamping assembly can clamp the outer circle of the part by moving downward, and can loosen the outer circle of the part by moving upward.

[0003] In this patent, the connection between the pull ring and the clamping assembly is achieved by the cooperation between the limiting part and the annular groove. When installing, the lower end of the clamping assembly needs to be deformed to a certain extent and then inserted into the pull ring, and then the limiting part is buckled into the groove to finally achieve the installation connection between the pull ring and the clamping assembly. The operation is relatively troublesome, and when the two components need to be separated, tools are needed to disassemble them, which is more troublesome. In order to reduce the difficulty of disassembly and assembly of the above two components, it is necessary to optimize the two connection structures. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a pull ring connection structure, which can greatly reduce the difficulty of disassembly and assembly between the pull ring and the clamp, improve the installation efficiency, and facilitate later maintenance and replacement.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a pull ring connection structure, including a pull ring and a chuck, the pull ring is in a circular ring shape, a circle of inwardly protruding annular limiting parts are arranged in the opening of the upper end of the pull ring, the upper end of the pull ring is located above the annular limiting part and is evenly provided with a plurality of arc-shaped slots, the lower ends of the arc-shaped slots extend to the bottom of the annular limiting part, the lower part of the chuck is cylindrical, and the lower end of the chuck is provided with limiting plug blocks that match the arc-shaped slots one by one around the circumference, the outer wall of the limiting plug block is an arc surface, and the lower part of the chuck is located above the limiting plug block and is arranged with a circle of skirt.

[0006] As a supplement to the technical solution of the utility model, a plurality of columns are evenly arranged around the circumference of the lower end of the pull ring.

[0007] As a supplement to the technical solution described in the utility model, a connecting through hole is provided at the upper end of the pull ring located above each column, and the lower end of the connecting through hole passes through the lower end surface of the corresponding column.

[0008] As a supplement to the technical solution described in the utility model, there are three arc-shaped slots.

[0009] As a supplement to the technical solution described in the utility model, both sides of the upper port of the arc-shaped slot are provided with flared openings extending outwards.

[0010] Beneficial effects: The utility model relates to a pull ring connection structure. When installing, first align all the limit plugs with their corresponding arc slots and insert them. The skirt is located above the annular limit portion. After the limit plug is inserted into the bottom of the arc slot, the chuck is rotated so that the limit plug is separated from the arc slot and located below the annular limit portion. The annular limit portion is clamped by the cooperation of the skirt and the limit plug, so as to realize the limit connection between the pull ring and the chuck. When it needs to be removed, the chuck is rotated so that the limit plug returns to the arc slot, and the chuck can be pulled out, which is very convenient to operate. The utility model can greatly reduce the difficulty of disassembly and assembly between the pull ring and the chuck, improve the installation efficiency, and facilitate later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the pull ring described in the utility model;

[0013] Figure 3 It is a structural schematic diagram of the chuck described in the utility model.

[0014] Illustration: 1. Pull ring, 2. Clamp, 3. Post, 4. Connecting hole, 5. Arc slot, 6. Expanding mouth, 7. Limiting plug, 8. Arc surface, 9. Skirt, 10. Annular limiting part. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0016] The embodiment of the utility model relates to a pull ring connection structure, such as Figure 1-3As shown, it includes a pull ring 1 and a chuck 2, the pull ring 1 is in a circular ring shape, and a circle of inwardly protruding annular limiting parts 10 are arranged in the opening of the upper end of the pull ring 1, and a plurality of arc-shaped slots 5 are evenly arranged on the upper end of the pull ring 1 above the annular limiting part 10, and the lower ends of the arc-shaped slots 5 extend to the bottom of the annular limiting part 10, and the lower part of the chuck 2 is cylindrical, and the lower end of the chuck 2 is provided with limiting blocks 7 around the circumference that match the arc-shaped slots 5 one by one, and the outer wall of the limiting blocks 7 is an arc surface 8, and the lower part of the chuck 2 is located above the limiting blocks 7 and is arranged with a circle of skirt 9.

[0017] The diameter of the lower end of the chuck 2 is smaller than the inner diameter of the annular limit portion 10, the outer diameter of the skirt 9 is larger than the inner diameter of the annular limit portion 10, and the outermost sides of the plurality of limit plugs 7 form a virtual outer circle, the diameter of the virtual outer circle is larger than the inner diameter of the annular limit portion 10, so that the skirt 9 and the limit plugs 7 can cooperate to clamp the annular limit portion 10.

[0018] During installation, first align all the limit plugs 7 with their corresponding arc-shaped slots 5 and insert them, with the skirt 9 located above the annular limit portion 10. After the limit plug 7 is inserted to the bottom of the arc-shaped slot 5, rotate the chuck 2 so that the limit plug 7 is disengaged from the arc-shaped slot 5 and is located below the annular limit portion 10. The annular limit portion 10 is clamped through the cooperation of the skirt 9 and the limit plug 7 to achieve a limiting connection between the pull ring 1 and the chuck 2. When it needs to be removed, rotate the chuck 2 so that the limit plug 7 returns to the arc-shaped slot 5, and the chuck 2 can be pulled out. The operation is very convenient.

[0019] A plurality of upright posts 3 are evenly arranged around the circumference of the lower end of the pull ring 1 .

[0020] The upper end of the pull ring 1 is located above each column 3 and is provided with a connecting through hole 4, and the lower end of the connecting through hole 4 penetrates the lower end surface of the corresponding column 3; the connecting through hole 4 cooperates with bolts to install and fix the pull ring 1.

[0021] There are three arc-shaped slots 5 in total.

[0022] Both sides of the upper end of the arc-shaped slot 5 are provided with outwardly extending flared openings 6 , and the structural design of the flared openings 6 is to facilitate the insertion of the limiting plug 7 into the arc-shaped slot 5 .

[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0026] The above is a detailed introduction to a pull ring connection structure provided by the present application. Specific examples are used in this article to illustrate the principle and implementation method of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pull ring connection structure, comprising a pull ring (1) and a clamp (2), characterized in that: The pull ring (1) is in the shape of a circular ring, and a circle of inwardly protruding annular limiting parts (10) are arranged in the opening of the upper end of the pull ring (1). The upper end of the pull ring (1) is located above the annular limiting part (10) and is evenly provided with a plurality of arc-shaped slots (5). The lower ends of the arc-shaped slots (5) extend to the bottom of the annular limiting part (10). The lower part of the chuck (2) is in the shape of a cylinder, and the lower end of the chuck (2) is provided with limiting blocks (7) that match the arc-shaped slots (5) one by one around the circumference. The outer wall of the limiting blocks (7) is a circular arc surface (8). The lower part of the chuck (2) is located above the limiting blocks (7) and is provided with a circle of skirt (9).

2. A pull ring connection structure according to claim 1, characterized in that: A plurality of upright posts (3) are evenly arranged around the circumference of the lower end of the pull ring (1).

3. A pull ring connection structure according to claim 2, characterized in that: The upper end of the pull ring (1) is located above each column (3) and is provided with a connecting through hole (4), and the lower end of the connecting through hole (4) penetrates the lower end surface of the corresponding column (3).

4. A pull ring connection structure according to claim 1, characterized in that: The number of the arc-shaped slots (5) is three in total.

5. The pull ring connection structure according to claim 1, characterized in that: Both sides of the upper end of the arc-shaped slot (5) are provided with flared openings (6) extending outwards.

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