Trundle

Abstract

The castor comprises a connecting support and a rolling wheel, the rolling wheel comprises a main wheel body, a rotating connecting part used for being rotationally connected with the connecting support is arranged in the middle of the main wheel body, an intersection part is arranged on the outer side of the rotating connecting part, and a plurality of intersection through holes formed at intervals are formed in the intersection part in the circumferential side direction of the intersection part; the rolling wheel further comprises a wrapping joint body which wraps the outer side of the joint part and fills the joint through hole in a pouring mode. According to the caster, the intersection part on the main wheel body is provided with the intersection through hole, and then the intersection through hole is filled with the coating intersection body, so that the appearance of the caster is improved, the wear resistance and the corrosion resistance of the caster are also possibly improved, the caster can keep good appearance and performance in various environments, and the service life of the caster is prolonged. And meanwhile, the service life of the trundle can be remarkably prolonged.

Description

Technical Field

[0001] This application relates to the technical field of casters, and more particularly to a caster. Background Technology

[0002] Casters, whose main structure consists of a connecting bracket and rolling wheels, are used to install under equipment to allow it to move freely. Currently, casters are mostly used in industrial manufacturing equipment, household furniture, medical equipment, etc., and are indispensable items in daily life.

[0003] However, most existing casters fail to combine wear resistance, corrosion resistance, high load capacity, and aesthetics into one, thus failing to meet the ever-evolving usage demands. Therefore, those skilled in the art urgently need to develop a new type of caster to meet practical application requirements. Utility Model Content

[0004] The main objective of this application is to provide a caster that addresses the aforementioned technical problems.

[0005] A caster includes a connecting bracket and a roller. The roller includes a main wheel body. The main wheel body has a rotating connecting part in the middle for rotating connection with the connecting bracket. The rotating connecting part has a mating part on its outer side. The mating part has a plurality of spaced-apart mating through holes along its circumferential direction.

[0006] The roller also includes a covering co-entrapment body that covers the outside of the co-entrapment portion and fills the co-entrapment through hole.

[0007] As described above, in the caster, the through-hole is oriented in the same direction as the axial direction of the main wheel body.

[0008] As described above, the material used to make the encapsulating composite body of the caster is transparent PU material.

[0009] As described above, the caster has a plurality of spaced through holes on its circumferential side along the rotating connection part, and the through direction of the spaced through holes is the same as the axial direction of the main wheel body.

[0010] As described above, the caster has five spacer holes, and the cross-sectional shape of each spacer hole is elliptical.

[0011] As described above, the caster has two rollers, which are respectively located on the front and rear sides of the connecting bracket;

[0012] The connecting bracket has inwardly recessed recesses on both the front and rear sides to accommodate the rollers, and also has an intermediate connecting part located between the two recesses for connecting with the rotating connecting part.

[0013] As described above, the caster has a bearing mounting hole in the middle of the rotating connection part, and a rolling bearing is installed in the bearing mounting hole;

[0014] The intermediate connecting part is provided with a rotating shaft connecting hole coaxial with the bearing mounting hole. A connecting shaft is provided in the rotating shaft connecting hole. The front end of the connecting shaft is connected to the rolling bearing on the front roller, and its rear end is connected to the rolling bearing on the rear roller.

[0015] As described above, the caster has an upwardly protruding upper part on the left side of the connecting bracket, and the upper protruding part has an external protrusion for connecting external components.

[0016] Compared with the prior art, the above application has the following advantages:

[0017] This application improves the appearance of the caster by opening the interlocking through hole on the interlocking part of the main wheel body and then filling the interlocking through hole with the encapsulating interlocking body. This may also increase its wear resistance and corrosion resistance, so that the caster can maintain good appearance and performance in various environments, and at the same time significantly improve the service life of the caster of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the caster in this application.

[0020] Figure 2 This is an exploded view of the caster in this application.

[0021] Figure 3 This is an exploded view of the connecting bracket described in the caster of this application.

[0022] Figure 4 This is a perspective view of the connecting bracket in the caster of this application after the connecting shaft is hidden.

[0023] Figure 5 This is a perspective view of the roller described in the caster of this application.

[0024] Figure 6 This is a partial exploded view of the rollers described in the casters of this application.

[0025] Figure 7 This is a cross-sectional view of the main wheel body described in the caster of this application. Detailed Implementation

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0029] In one embodiment of this application, as Figures 1 to 7 As shown, a caster includes a connecting bracket 1 and a roller 2. The roller 2 includes a main wheel body 21. The main wheel body 21 has a rotating connecting part 211 in the middle for rotating connection with the connecting bracket 1. The rotating connecting part 211 has a mating part 212 on its outer side. The mating part 212 has a plurality of spaced mating through holes 2121 along its circumferential direction.

[0030] The roller 2 also includes a covering co-entertainment body 22 that covers the outside of the co-entertainment portion 212 and fills the co-entertainment through hole 2121.

[0031] This application improves the appearance of the caster by opening the interlocking through hole 2121 on the interlocking part 212 of the main wheel body 21, and then filling the interlocking through hole 2121 with the covering interlocking body 22. It may also increase the wear resistance and corrosion resistance of the caster, so that the caster can maintain a good appearance and performance in various environments, and at the same time significantly improve the service life of the caster of this application.

[0032] Furthermore, the through-hole 2121 is oriented in the same direction as the axial direction of the main wheel body 21. The material used to cover the mating body 22 is transparent PU material. Its advantages lie in the fact that transparent PU material not only has high transparency, allowing for clear observation of the overall shape of the mating part 212, but also possesses outstanding characteristics such as high temperature resistance, corrosion resistance, and good pressure resistance. This not only improves the overall aesthetics of the application but also further extends its service life and enhances its adaptability to various environments.

[0033] Furthermore, the rotating connecting part 211 has a plurality of spaced-apart through holes 2111 along its circumferential direction, and the through direction of the spaced-apart through holes 2111 is the same as the axial direction of the main wheel body 21. There are five spaced-apart through holes 2111, and the cross-sectional shape of each spaced-apart through hole 2111 is elliptical. This has the advantage of not only reducing the material used in the production of the main wheel body 21, but also further improving the overall aesthetics.

[0034] Furthermore, there are two rollers 2, which are respectively located on the front and rear sides of the connecting bracket 1;

[0035] The connecting bracket 1 has inwardly recessed recesses 11 on both its front and rear sides to accommodate the rollers 2, and also has an intermediate connecting part 12 located between the two recesses 11 for connection with the rotating connecting part 211. Its advantage lies in achieving a double roller configuration, which helps to improve load-bearing capacity and further enhances rolling stability.

[0036] Furthermore, a bearing mounting hole 2112 is provided in the middle of the rotating connection part 211, and a rolling bearing 2113 is provided in the bearing mounting hole 2112.

[0037] The intermediate connecting part 12 has a rotating shaft connecting hole 121 coaxially arranged with the bearing mounting hole 2112. A connecting rotating shaft 122 is provided on the rotating shaft connecting hole 121. The front end of the connecting rotating shaft 122 is connected to the rolling bearing 2113 located on the front roller 2, and its rear end is connected to the rolling bearing 2113 located on the rear roller 2. The purpose is to achieve a rotating connection.

[0038] Furthermore, the connecting bracket 1 has an upwardly protruding upper protrusion 13 on its left side, and the upper protrusion 13 has an external protrusion 14 for connecting external components. The purpose is to facilitate connection with external components.

[0039] The above is an implementation method provided in conjunction with specific content, and the specific implementation of this application is not limited to these descriptions. Any similarity or similarity with the methods and structures of this application, or any technical deduction or replacement based on the concept of this application, shall be considered within the scope of protection of this application.

Claims

1. A caster, comprising a connecting bracket (1) and a roller (2), characterized in that: The roller (2) includes a main wheel body (21), the main wheel body (21) is provided with a rotating connecting part (211) in the middle for rotating connection with the connecting bracket (1), the rotating connecting part (211) is provided with a coupling part (212) on the outside, and the coupling part (212) is provided with a plurality of spaced coupling through holes (2121) along its circumferential direction; The roller (2) also includes a covering co-entanglement body (22) that covers the outside of the co-entanglement portion (212) and fills the co-entanglement through hole (2121).

2. The caster according to claim 1, characterized in that, The through-hole (2121) is oriented in the same direction as the axial direction of the main wheel body (21).

3. The caster according to claim 2, characterized in that, The material used to make the encapsulated cross-linked body (22) is transparent PU material.

4. The caster according to claim 3, characterized in that, The rotating connection part (211) has a plurality of spaced through holes (2111) arranged at intervals along its circumferential direction, and the through direction of the spaced through holes (2111) is the same as the axial direction of the main wheel body (21).

5. The caster according to claim 4, characterized in that, The number of the spacer holes (2111) is 5, and the cross-sectional shape of each spacer hole (2111) is elliptical.

6. The caster according to claim 5, characterized in that, There are two rollers (2), which are respectively located on the front and rear sides of the connecting bracket (1); The connecting bracket (1) has inwardly recessed recesses (11) on both the front and rear sides for accommodating the roller (2), and also has an intermediate connecting part (12) located between the two recesses (11) for connecting with the rotating connecting part (211).

7. The caster according to claim 6, characterized in that, The rotating connection part (211) has a bearing mounting hole (2112) in the middle, and a rolling bearing (2113) is provided in the bearing mounting hole (2112); The intermediate connecting part (12) is provided with a rotating shaft connecting hole (121) coaxially arranged with the bearing mounting hole (2112). The rotating shaft connecting hole (121) is provided with a connecting rotating shaft (122). The front end of the connecting rotating shaft (122) is connected to the rolling bearing (2113) located on the front roller (2), and its rear end is connected to the rolling bearing (2113) located on the rear roller (2).

8. The caster according to claim 7, characterized in that, The connecting bracket (1) has an upwardly protruding upper protrusion (13) on its left side, and the upper protrusion (13) has an external protrusion (14) for connecting external components.

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