Universal wheel structure

Abstract

The utility model discloses a universal wheel structure which comprises a wheel body and a support, the wheel body is installed on a wheel body installation piece, a sleeve is arranged on the upper portion of the wheel body installation piece, two symmetrically-arranged semi-arc barrel portions are arranged in the sleeve, springs are arranged on the outer sides of the semi-arc barrel portions in a sleeved mode, and limiting protrusions are arranged on the outer sides of the upper portions of the semi-arc barrel portions. The support is provided with a mounting hole, a protruding annular part is arranged on the side wall of the mounting hole, the limiting protrusion is placed at the top end of the annular part, the top of the spring abuts against the bottom end of the annular part, the bottom of the spring abuts against the interior of the sleeve, the buffering and damping effects are achieved, and stable operation of the support is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to caster technology field, concretely relates to a universal wheel structure. BACKGROUND

[0002] The universal wheel is so called movable caster, its structure allows horizontal 360 degree rotation, the universal wheel is generally installed at the bottom of object, makes it convenient to move component, is widely used in trolley, box, seat and other products, in the prior art, such as patent announcement number CN214112174U, discloses a detachable universal wheel, including support plate, main pipe and branch pipe, support plate is provided with bearing, the middle part of bearing is penetrated with main pipe, the lower part of main pipe is provided with sleeve plate, the both sides wall of main pipe is provided with locking screw, the middle part of main pipe is provided with branch pipe, bearing is connected through clamping groove with support plate, main pipe is inserted with bearing, sleeve plate is inserted with main pipe, locking screw is connected through thread with main pipe, branch pipe is slidably connected with main pipe, through setting up main pipe, locking screw and branch pipe, the height of universal wheel can be adjusted, satisfy the demand of universal wheel use, but the universal wheel does not have shock absorption and buffering structure, after the installation of universal wheel, it is not favorable to guarantee the stable operation of trolley in the process of pushing. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems existing in the background art, and provides a universal wheel structure.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A universal wheel structure, including wheel body, support, the wheel body is installed on the wheel body mounting piece, the upper part of the wheel body mounting piece is provided with the sleeve, two symmetrical half circular arc cylinder parts are arranged in the sleeve, the spring is arranged outside the half circular arc cylinder part, the limit protrusion is arranged on the upper part outside the half circular arc cylinder part, the support is provided with the mounting hole, the side wall of the mounting hole is provided with the convex annular part, the limit protrusion is placed in the top of the annular part, the top of the spring is abutted on the bottom of the annular part, and the bottom of the spring is abutted in the sleeve.

[0006] In some embodiments of the utility model, the lower part of the wheel body mounting piece is provided with an installation space for placing the wheel body.

[0007] In some embodiments of the utility model, the lower part of the wheel body mounting piece includes extension walls on both sides, the installation space is located between the extension walls on both sides, and the wheel body mounting piece is installed between the extension walls on both sides through a connecting shaft.

[0008] In some embodiments of the utility model, the wheel body is provided with a shaft hole for installing the connecting shaft along its rotation axis, and the extension walls on both sides are provided with side wall holes corresponding to the shaft hole.

[0009] In some embodiments of the utility model, the extension wall inside is provided with a stepped protrusion, the sidewall hole is located at the center of the stepped protrusion, the wheel body side surface is provided with a positioning recess corresponding to the stepped protrusion, and the shaft hole is located at the center of the positioning recess.

[0010] In some embodiments of the utility model, the end of the support is provided with a shell for mounting the wheel body mounting member.

[0011] In some embodiments of the utility model, the shell comprises an upper shell and a lower shell, and the lower shell is formed with a mounting hole.

[0012] In some embodiments of the utility model, a connecting member is inserted into the space between the two semicircular arc cylinder parts, the connecting member is provided with a top flange at the upper end, and the top flange is mounted at the top of the mounting hole.

[0013] In some embodiments of the utility model, the lower shell is provided with an upper limiting part opposite to the top flange, and the upper limiting part abuts against the top of the top flange.

[0014] In some embodiments of the utility model, the mounting hole top is provided with a limiting recess, and the top flange is provided with a rotating limiting part corresponding to the limiting recess.

[0015] From the above description of the utility model, compared with the prior art, the utility model has the following advantages

[0016] Beneficial effects:

[0017] 1. The wheel body mounting member is rotatably mounted in the mounting hole of the support through the two symmetrically arranged semicircular arc cylinder parts and the limiting protrusions thereon, which is simple in structure and convenient to install; the connecting member is inserted between the two semicircular arc cylinder parts to serve as internal support to prevent the two semicircular arc cylinder parts from deforming inwardly, thereby avoiding the wheel body mounting member from being pulled out of the mounting hole.

[0018] 2. The spring top abuts against the bottom end of the annular part, which plays a role of buffering and shock absorption, and helps to ensure the stable operation of the support.

[0019] 3. The extension wall inside of the lower part of the wheel body mounting member is provided with a stepped protrusion, and the wheel body side surface is provided with a positioning recess corresponding to the stepped protrusion, which facilitates installation and positioning when the wheel body is installed, and helps to improve the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following briefly introduces the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0021] Figure 1 Structure diagram of the present application;

[0022] Figure 2 Structure diagram of the present application; Figure 1 A enlarged view of the present application;

[0023] Figure 3 Structure diagram of the present application;

[0024] Figure 4 Structure diagram of the present application; Figure 3 B enlarged view of the present application;

[0025] Figure 5 Structure diagram of the present application;

[0026] Main figure mark explanation:

[0027] 1, wheel body, 10, shaft hole, 11, positioning recess, 2, wheel mounting, 20, sleeve, 21, semicircular arc cylinder, 22, limiting protrusion, 23, extension wall, 24, connecting shaft, 25, stepped protrusion, 26, side wall hole, 3, spring, 4, connecting piece, 40, top flange, 41, rotation limiting part, 5, bracket, 50, mounting hole, 51, annular part, 52, upper shell, 53, lower shell, 54, limiting recess, 55, upper limiting part, 56, other casters. Specific implementation

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] In the claims, description and above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0030] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0031] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0032] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0033] See the example. Figures 1-5 :

[0034] A universal wheel structure includes a wheel body 1 and a bracket 5. The wheel body 1 is mounted on the bottom of the bracket 5 via a wheel mounting component 2. A sleeve 20 is provided on the upper part of the wheel mounting component 2. Two symmetrically arranged semi-circular arc-shaped cylindrical portions 21 are provided inside the sleeve 20. A limiting protrusion 22 is provided on the outer upper part of each semi-circular arc-shaped cylindrical portion 21. The bracket 5 is provided with a mounting hole 50. A raised annular portion 51 is provided on the side wall of the mounting hole 50. During installation, the two semi-circular arc-shaped cylindrical portions 21 are pressed from both sides and deformed inwards. Then, the upper part of the semi-circular arc-shaped cylindrical portions 21 is passed through the mounting hole 50. When the external force is removed, the semi-circular arc-shaped cylindrical portions 21 return to their original shape, and the limiting protrusion 22 is placed at the top of the annular portion 51. It is understood that the axis of the mounting hole 50 coincides with the axis of the two symmetrically arranged semi-circular arc-shaped cylindrical portions 21, allowing the wheel mounting component 2 and the wheel body 1 mounted on it to rotate under external force.

[0035] Preferably, the wheel mounting component 2 is made of plastic.

[0036] A spring 3 is sleeved on the outer side of the semi-circular cylindrical portion 21. The bottom of the spring 3 abuts against the inside of the sleeve 20, and the top of the spring 3 abuts against the bottom of the annular portion 51, which plays a role in buffering and shock absorption, helping to ensure the stable operation of the bracket 5. It can be understood that the annular portion 51 is located between the limiting protrusion 22 and the spring 3.

[0037] As an embodiment, the end of the bracket 5 is provided with a housing for mounting the wheel body mount 2.

[0038] As an embodiment, the housing comprises an upper shell 52 and a lower shell 53, the upper shell 52 and the lower shell 53 are connected by screws, the lower shell 53 is formed with a mounting hole 50, the upper end of the connecting piece 4 extends outward along the radial direction and is provided with a top flange 40, the top flange 40 is located at the top of the mounting hole 50, the connecting piece 4 is inserted into the space between the two semicircular arc cylinder parts 21, specifically, the cylindrical connecting part at the lower part of the connecting piece 4 is inserted into the space between the two semicircular arc cylinder parts 21, which is supported by the connecting piece 4 to avoid the deformation of the two semicircular arc cylinder parts 21 inward, thereby avoiding the wheel body mount 2 from being pulled out of the mounting hole 50.

[0039] As an embodiment, the top of the mounting hole 50 is provided with a limiting recess 54, and the top flange 40 is provided with a rotation limiting part 41 corresponding to the limiting recess 54, which is used to avoid the rotation of the connecting piece 4 after installation. Preferably, the lower shell 53 is provided with an upper limiting part 55 opposite to the top flange 40, which is used to limit the upward movement of the connecting piece 4 after the lower shell 53 is installed downward with the upper shell 52.

[0040] As an embodiment, the lower part of the wheel body mount 2 is provided with a mounting space for placing the wheel body 1.

[0041] Preferably, the lower part of the wheel body mount 2 comprises two extension walls 23 located on both sides, and the mounting space is located between the two extension walls 23, and the wheel body mount 2 is installed between the two extension walls 23 through a connecting shaft 24.

[0042] As an embodiment, the wheel body 1 is provided with a shaft hole 10 for mounting the connecting shaft 24 along the rotation axis thereof, and the two extension walls 23 are provided with a side wall hole 26 corresponding to the shaft hole 10.

[0043] As an embodiment, the inside of the extension wall 23 is provided with a stepped protrusion 25, and the side wall hole 26 is located at the center of the stepped protrusion 25, and the side surface of the wheel body 1 is provided with a positioning recess 11 corresponding to the stepped protrusion 25, and the shaft hole 10 is located at the center of the positioning recess 11, which facilitates installation positioning and helps to improve installation efficiency when the wheel body 1 is installed.

[0044] As an implementation, the support 5 is a bottom support of a trolley, the number of the wheel bodies 1 and the corresponding wheel body mountings 2 is four respectively and arranged at the four corners below the support 5; in other implementations, the number of the wheel bodies 1 and the corresponding wheel body mountings 2 is two respectively and arranged at the front side below the support 5, while the rear side below the support 5 is arranged with other casters 56.

[0045] The above description and the embodiment are used to explain the protection scope of the present application, but do not constitute the limitation of the protection scope of the present application. Through the inspiration of the present application or the above embodiment, the modification, equivalent replacement or other improvement of the present application embodiment or one part of the technical features can be obtained by the ordinary skill in the art combined with the common knowledge, the ordinary skill in the art and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the present application.

Claims

1. A universal wheel structure, characterized in that: The assembly includes a wheel body (1) and a bracket (5). The wheel body (1) is mounted on a wheel mounting component (2). A sleeve (20) is provided on the upper part of the wheel mounting component (2). Two symmetrically arranged semi-circular arc cylinders (21) are provided inside the sleeve (20). A spring (3) is sleeved on the outer side of the semi-circular arc cylinder (21). A limiting protrusion (22) is provided on the upper outer side of the semi-circular arc cylinder (21). The bracket (5) is provided with a mounting hole (50). A protruding annular part (51) is provided on the side wall of the mounting hole (50). The limiting protrusion (22) is placed on the top of the annular part (51). The top of the spring (3) abuts against the bottom of the annular part (51), and the bottom of the spring (3) abuts against the inside of the sleeve (20).

2. The universal wheel structure according to claim 1, characterized in that: The lower part of the wheel mounting component (2) is provided with an installation space to facilitate the placement of the wheel body (1).

3. The universal wheel structure according to claim 2, characterized in that: The lower part of the wheel mounting component (2) includes extension walls (23) on both sides, and the mounting space is located between the extension walls (23) on both sides. The wheel mounting component (2) is mounted between the extension walls (23) on both sides via a connecting shaft (24).

4. The universal wheel structure according to claim 3, characterized in that: The wheel body (1) has a shaft hole (10) for mounting a connecting shaft (24) along its rotation axis, and the extension walls (23) on both sides have side wall holes (26) corresponding to the shaft hole (10).

5. The universal wheel structure according to claim 4, characterized in that: The inner side of the extension wall (23) is provided with a stepped protrusion (25), the side wall hole (26) is located at the center of the stepped protrusion (25), the side of the wheel body (1) is provided with a positioning recess (11) corresponding to the stepped protrusion (25), and the shaft hole (10) is located at the center of the positioning recess (11).

6. A universal wheel structure according to any one of claims 1-5, characterized in that: The end of the bracket (5) is provided with a housing for mounting the wheel mounting component (2).

7. A universal wheel structure according to claim 6, characterized in that: The housing includes an upper shell (52) and a lower shell (53), and the lower shell (53) has a mounting hole (50).

8. The universal wheel structure according to claim 7, characterized in that: A connector (4) is inserted into the space between the two semi-circular cylindrical parts (21). The connector (4) has a top flange (40) at its upper end, and the top flange (40) is installed on the top of the mounting hole (50).

9. A universal wheel structure according to claim 8, characterized in that: The lower shell (53) has an upper limit part (55) located directly opposite the top flange (40), and the upper limit part (55) abuts against the top of the top flange (40).

10. A universal wheel structure according to claim 8, characterized in that: The mounting hole (50) is provided with a limiting recess (54) at the top, and the top flange (40) is provided with a rotation limiting part (41) corresponding to the limiting recess (54).

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