TWM669635U - Wheel structure - Google Patents

Abstract

The invention is a wheel structure, including a wheel seat, a coupling seat, an axle, two wheel bodies, a spring, and an axle rod. The wheel seat has a top wall and two opposite side walls. A coupling groove is downwardly arranged on one side of the top surface, and a straight strip-shaped actuating hole is arranged in the upper and lower directions of the two opposite side walls. A positioning protrusion is downwardly arranged on both sides of the top wall. The coupling seat is arranged above the coupling groove of the wheel seat, and has a through coupling hole in the center. The two ends of the axle are respectively inserted into the coupling groove of the wheel seat. , the engaging hole combination of the engaging seat; the two wheel bodies are respectively arranged on the two sides of the wheel seat, with an axial hole in the center, and positioning grooves that can engage with the positioning protrusion are arranged at different angular positions around the circumference; the spring is arranged in the wheel seat; the shaft rod is inserted through the axial holes of the two wheel bodies and the actuating hole combination of the wheel seat, and the shaft rod can be pressed by the spring to be positioned at the bottom end position of the actuating hole, and the positioning protrusion is located above the wheel body; thereby, the invention can have better actuation and positioning stability.

Description

Wheel structure

This creation is about a wheel structure, mainly referring to a wheel that can be easily moved and positioned when subjected to force.

It is known that wheels used for support are often used on furniture or other objects that need to be moved. For example, it is known that seats often need to be moved to different positions when used. Therefore, wheels are often provided under the legs of the seats, and the wheels can be used to move the seats in a rolling manner to improve the convenience and applicability of movement.

However, when a user sits on the aforementioned chair with wheels, the wheels supported by the bottom of the chair are still in a rolling state. Therefore, if the center of gravity of the body shifts during sitting, it is easy to cause the chair wheels to roll and move, resulting in poor riding stability and safety.

The purpose of this invention is to provide a wheel body which is easy to move and can be positioned when subjected to force.

The wheel of the invention includes a wheel seat, a coupling seat, an axle, two wheel bodies, a spring, and an axle rod; the wheel seat has a top wall and two opposite side walls, one side of the top wall is downwardly provided with a coupling groove, and the two opposite side walls are provided with a straight strip-shaped actuating holes in the upper and lower directions, and the two sides of the top wall are respectively provided with a positioning protrusion downward; the coupling seat is arranged above the coupling groove of the wheel seat, and has a through coupling hole in the center; the two ends of the axle are respectively inserted into the coupling groove of the wheel seat and the coupling hole of the coupling seat. The wheel body is respectively arranged on two sides of the wheel seat, with an axial hole in the center, and positioning grooves that can engage with the positioning protrusion are arranged at different angular positions around the wheel seat; the spring is arranged in the wheel seat; the shaft rod is inserted into the two axial holes of the wheel body and the actuating hole combination of the wheel seat, and the shaft rod can be pressed by the spring to be positioned below the actuating hole, and the positioning protrusion is located above the wheel body, and when subjected to gravity, the wheel seat can be moved downward so that the positioning protrusion is embedded in the positioning groove for positioning.

In one embodiment of the present invention, a receiving groove for receiving the spring is provided in the side wall at a position corresponding to the upper part of the actuating hole.

In one embodiment of the present invention, the assembly slot is provided with a set of connection holes and a coupling element is inserted through the set of connection holes to be fixedly connected to the shaft.

In one embodiment of the present invention, a bearing is arranged in the coupling hole, and the top end of the shaft is inserted through the bearing, and is coupled to the top end of the shaft by a coupling element.

In one embodiment of the present invention, a flange is disposed at the center of the shaft, which can abut against the top wall of the wheel seat and the bearing.

The shaft of the invention can be positioned below the actuating hole by the pressure of the spring, and the positioning protrusion is positioned above the wheel body, so that the wheel body can rotate normally.

When the coupling seat carries a person or other object, the gravity of the invention can press the wheel seat corresponding to the wheel body downward, and can move the shaft rod corresponding to the actuating hole upward, so that the positioning protrusion of the wheel seat can be embedded in the positioning groove of the wheel body, and can ensure that the wheel body cannot rotate and position, thereby improving the safety of use.

Please refer to Figures 1 to 3. The wheel of the invention includes a wheel seat 1, a joint seat 2, a shaft 3, two wheel bodies 4, a spring 5, and a shaft 6. The wheel seat 1 has a top wall 11 and two opposite side walls 12. A connection groove 13 is downwardly provided on one side of the top wall 11, and a connection hole 131 is provided at the bottom of the connection groove 13. A straight strip-shaped actuating hole 14 is provided in the upper and lower directions of the opposite side walls 12, and a receiving groove 15 is provided in the side wall 12 at a position above the actuating hole 14. A positioning protrusion 16 is provided downwardly on both sides of the top wall 11.

The coupling seat 2 is arranged above the assembly groove 13 of the wheel seat 1 and can be assembled with a chair, a table or other movable objects. A through coupling hole 21 is provided in the center, and a bearing 22 is arranged in the coupling hole 21.

The two ends of the shaft 3 are respectively inserted into the assembly groove 13 of the wheel seat 1 and the engagement hole 21 of the engagement seat 2, and the bottom end is inserted into the assembly hole 131 by the engagement element 31 to be fixedly connected to the wheel seat 1. The top end is inserted into the bearing 22, and the engagement element 32 is combined with the top end of the shaft 3, so that the wheel seat 1 can rotate corresponding to the engagement seat 2. The center of the shaft 3 is provided with a flange 33 that can abut against the top wall 11 of the wheel seat 1 and the bearing 22, and the flange 33 can prevent the engagement seat 2 from abutting against the wheel seat 1 to improve the stability of the shaft 3 corresponding to the engagement seat 2.

The two wheel bodies 4 are respectively arranged on two sides of the wheel seat 1, with an axial hole 41 in the center, and positioning grooves 42 that can engage with the positioning protrusions 16 are arranged at different angles around the circumference.

The spring 5 is disposed in the receiving groove 15 of the wheel seat 1 .

The shaft 6 is inserted through the shaft holes 41 of the two wheel bodies 4, and the actuating hole 14 of the wheel seat 1 is assembled by a coupling element 61, so that the shaft 6 can be pressed by the spring 5 to be positioned at the bottom end of the actuating hole 14, and the positioning protrusion 16 is located above the wheel body 4, so that the wheel body 4 can rotate normally.

Please refer to Figures 4 and 5. When the coupling seat 2 carries a person or other object, the gravity of the present invention can press the wheel seat 1 corresponding to the wheel body 4 downward, and can move the shaft 6 corresponding to the actuating hole 14 upward, so that the positioning protrusion 16 of the wheel seat 1 can be embedded in the positioning groove 42 of the wheel body 4 for positioning, and can ensure that the wheel body 4 cannot rotate to improve the safety of use.

Therefore, as described above, the present invention can provide rotational displacement of the wheel body in normal times, and when bearing the weight of a passenger, the positioning protrusion can engage with the positioning groove to ensure that the wheel cannot be displaced, thereby providing a safety effect. The aforementioned embodiments are illustrative of the present invention and are not limitations of the present invention. Any equivalent changes made in accordance with the spirit of the present invention should also fall within the scope of the present invention.

1 wheel seat                 11 top wall               12 side wall 13 assembly groove             131 assembly hole         14 actuating hole 15 receiving groove           16 positioning protrusion 2 joint seat             21 joint hole           22 bearing 3 shaft column                 31 joint element              32 joint element 33 flange 4 wheel body                 41 shaft hole                 42 positioning groove 5 spring                 6 shaft rod                 61 joint element

Figure 1 is an exploded view of the wheel of this creation.

Figure 2 is a wheel assembly diagram of this creation.

Figure 3 is a cross-sectional view of the wheel assembly of this creation.

Figure 4 is a cross-sectional view of this creation under gravity pressure.

Figure 5 is a schematic diagram of the positioning of this creation under gravity pressure.

1: Wheel seat

11: Top wall

12: Side wall

13: Assembly slot

14: Actuation hole

16: Positioning convex body

2: Joint seat

21:Joint hole

22: Bearings

3: Axis

31:Jointing element

32:Jointing element

33: flange

4: Wheel body

41: Axle hole

42: Positioning slot

5: Spring

6: Axis rod

61:Joint element

Claims (5)

A wheel structure includes: A wheel seat, having a top wall and two opposite side walls, a combination groove is set downward on one side of the top wall, and a straight strip-shaped actuating hole is set in the upper and lower directions of the two opposite side walls, and a positioning protrusion is set downward on both sides of the top wall; A coupling seat is set above the combination groove of the wheel seat, and has a through-connection hole in the center; An axle, the two ends of which are respectively inserted into the combination groove of the wheel seat and the connection hole of the coupling seat; Two wheel bodies are respectively set on the two sides of the wheel seat, have an axle hole in the center, and are set at different angular positions around the circumference to engage with the positioning protrusion. A spring is set in the wheel seat; An axle rod is inserted through the axle holes of the two wheel bodies and the actuating holes of the wheel seat, and the axle rod can be positioned below the actuating holes by the spring, and the positioning protrusion is positioned above the wheel body, and when subjected to gravity, the wheel seat can move downward so that the positioning protrusion is embedded in the positioning groove for positioning. As described in claim 1, a wheel structure in which a receiving groove for accommodating the spring is provided in the two side walls at a position corresponding to the upper part of the actuating hole. A wheel structure as described in claim 1, wherein the assembly groove is provided with a assembly hole and a coupling element is inserted through the assembly hole to be fixedly connected to the axle. A wheel structure as described in claim 1, wherein a bearing is arranged in the coupling hole, the top end of the shaft is inserted through the bearing, and is coupled to the top end of the shaft by a coupling element. A wheel structure as described in claim 4, wherein a flange is provided at the center of the shaft which can abut against the top wall of the wheel seat and the bearing.

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