Connecting structure of trundle

Abstract

The utility model relates to a trundle connecting structure which comprises a trundle body, a connecting shaft is installed on the trundle body, a clamping ring is installed on the connecting shaft, at least one through groove is formed in the clamping ring, and an elastic protruding block is installed in the through groove. A supporting cylinder is further included, at least one through hole is formed in the supporting cylinder, and the elastic protruding blocks penetrate through the through holes. The trundle is fixed to the bottom of the appliance, the main shaft of the trundle cannot rotate when the trundle rotates, and stable movement of the appliance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of caster technology, and specifically to a connection structure for casters. Background Technology

[0002] Casters are used for transporting and moving equipment or materials, and are generally installed on the bottom of furniture, trolleys, lathes, and other appliances. Existing casters are typically fixed to the bottom of the appliance using screws during installation. However, when the caster rotates, the screw structure on its main shaft and the threaded hole may also rotate, causing the connection between the screw structure and the threaded hole on the main shaft to loosen, which is detrimental to the smooth movement of the appliance. Utility Model Content

[0003] The purpose of this invention is to design a caster connection structure that can ensure the smooth movement of the appliance while fixing the caster to the bottom of the appliance, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a caster connection structure is provided, including a caster body, a connecting shaft mounted on the caster body, a retaining ring mounted on the connecting shaft, at least one through groove on the retaining ring, and an elastic protrusion installed in the through groove; it also includes a support cylinder, which is installed at the bottom of the appliance, and the support cylinder has at least one through hole through which the elastic protrusion passes.

[0005] Furthermore, a pressing component is installed on the side of the support cylinder at the position of the through hole.

[0006] Furthermore, the pressing assembly includes a limiting cylinder and a pressing rod, the limiting cylinder communicating with the through hole, and the pressing rod being installed inside the limiting cylinder.

[0007] Furthermore, a first fixing plate is installed at the top of the caster body, and a second fixing plate is installed at the bottom of the support cylinder. The first fixing plate and the second fixing plate are connected by a fastener.

[0008] Furthermore, both the first fixing plate and the second fixing plate are provided with multiple through holes; the fixing component includes a bolt and a nut, the bolt passing through the through holes of the first fixing plate and the second fixing plate respectively and being threadedly connected to the nut.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This invention uses a retaining ring and an elastic protrusion. The elastic protrusion engages with a through hole to fix the caster to the bottom of the appliance. When the caster rotates, its spindle will not rotate, ensuring the smooth movement of the appliance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] The names of the components shown in the diagram are as follows:

[0015] 1. Caster body; 2. Connecting shaft; 3. Snap ring; 4. Through groove; 5. Elastic protrusion; 6. Support cylinder; 8. Limiting cylinder; 9. Pressing rod; 10. First fixing plate; 11. Second fixing plate; 12. Through hole. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] Example: Reference Figure 1-2 A caster connection structure includes a caster body 1, a connecting shaft 2 mounted on the caster body 1, a retaining ring 3 mounted on the connecting shaft 2, and at least one through groove 4 on the retaining ring 3. An elastic protrusion 5 is installed within the through groove 4. The elastic protrusion 5 is existing technology and allows for its extension and retraction. The structure also includes a support cylinder 6, mounted on the bottom of the appliance. The support cylinder 6 has at least one through hole through which the elastic protrusion 5 passes. By engaging the elastic protrusion 5 within the through hole, the caster is fixed to the bottom of the appliance, preventing rotation of the main shaft when the caster rotates, thus ensuring smooth movement of the appliance. A pressing assembly is mounted on the side of the support cylinder 6 at the position of the through hole. The pressing assembly includes a limiting cylinder 8 and a pressing rod 9. The limiting cylinder 8 communicates with the through hole, and the pressing rod 9 is installed within the limiting cylinder 8. The pressing rod 9 controls the extension and retraction of the elastic protrusion 5, facilitating caster disassembly and replacement.

[0018] A first fixing plate 10 is installed at the top of the caster body 1, and a second fixing plate 11 is installed at the bottom of the support cylinder 6. The first fixing plate 10 and the second fixing plate 11 are connected by fasteners. Both the first fixing plate 10 and the second fixing plate 11 have multiple through holes 12. The fasteners include bolts and nuts, with the bolts passing through the through holes 12 of the first fixing plate 10 and the second fixing plate 11 respectively and threadedly connected to the nuts. The caster body 1 and the appliance are further secured by bolts passing through the first fixing plate 10 and the second fixing plate 11, ensuring the smooth movement of the appliance.

[0019] The working principle of this utility model is as follows: When installing the caster body 1, the elastic protrusion 5 is inserted into the through hole, and then the first fixing plate 10 and the second fixing plate 11 are connected by the threaded connection of bolts and nuts to fix the caster to the bottom of the appliance.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A connecting structure of a caster, characterized by comprising: The utility model provides a kind of caster, including caster body (1), connecting shaft (2) is installed on the caster body (1), snap ring (3) is installed on the connecting shaft (2), at least one through slot (4) is opened in the snap ring (3), and elastic lug (5) is installed in the through slot (4);It further includes support cylinder (6), the support cylinder (6) is installed at the bottom of appliance, and the support cylinder (6) is opened at least one through hole, and the through hole is passed through for the elastic lug (5).

2. The connecting structure of the caster according to claim 1, characterized by: The side of the support cylinder (6) is located at the position of the through hole and is installed with pressing assembly.

3. The connecting structure of the caster according to claim 2, characterized by: The pressing assembly includes limiting cylinder (8) and pressing rod (9), the limiting cylinder (8) is communicated with the through hole, and the pressing rod (9) is installed in the limiting cylinder (8).

4. The connecting structure of the caster according to claim 1, characterized by: The top end of the caster body (1) is installed with first fixed plate (10), and the bottom end of the support cylinder (6) is installed with second fixed plate (11), and the first fixed plate (10) and the second fixed plate (11) are connected by fixing piece.

5. The connecting structure of the caster according to claim 4, characterized in that: The first fixed plate (10) and the second fixed plate (11) are all opened with multiple through holes (12);The fixing piece includes bolt and nut, and the bolt is respectively passed through the through hole (12) of the first fixed plate (10) and the second fixed plate (11) and is threadedly connected with the nut.

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