Chair wheel with lock and chair

Abstract

The utility model provides a chair wheel with a lock, comprising a chair wheel body, a wheel frame, a wheel body, a moving part, an elastic part and an adjusting assembly. The moving part is slidably fitted in the chair wheel body. The elastic part is a tension spring. The two ends of the elastic part are respectively connected to the second connecting shaft and the moving part. The elastic part is used to apply elastic tension to the wheel frame. The adjusting assembly is used to drive the moving part to move in the chair wheel body to adjust the elastic force of the elastic part. By designing the moving part and the adjusting assembly, after the position of the moving part is adjusted, the moving part and the wheel frame cooperate to stretch or shorten the elastic part, thereby adaptively adjusting the deformation of the elastic part, and correspondingly changing the resistance that the wheel frame has to overcome during rotation. The utility model also provides a chair, comprising the above-mentioned chair wheel with a lock.

Description

Technical Field

[0001] The utility model relates to the technical field of chair wheels, in particular to a chair wheel with a lock and a chair. Background Art

[0002] Chairs can provide users with comfortable sitting posture and support, help users relax their bodies, and relieve pressure on the back and neck. For example, a study chair can provide children with a correct spine protection effect, allowing children to maintain a correct sitting posture.

[0003] However, most of the existing chairs use chair wheels with adjustable load-bearing brake functions, which require the use of human body weight to brake the chair wheels. For lighter users, after sitting on the chair, the brakes may not be applied, thereby making it impossible to use the chair normally. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a chair wheel with lock and a chair, so as to overcome the problem that the brakes cannot be applied due to light weight.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a lockable chair wheel, including a chair wheel body; a wheel frame, rotatably arranged on the chair wheel body; a wheel body, rotatably arranged on the wheel frame, and the wheel body can abut against the chair wheel body; a movable part, movably arranged in the chair wheel body; an elastic part, respectively connecting the wheel frame and the movable part, and the elastic part is used to apply an elastic pulling force to the wheel frame; and an adjustment component, used to drive the movable part to move in the chair wheel body to adjust the elastic force of the elastic part.

[0006] Preferably, the adjustment assembly includes an adjustment bolt and a connecting piece threadedly engaged with the adjustment bolt, the adjustment bolt is rotatably arranged on the chair wheel body, and the connecting piece is arranged inside the chair wheel body; the movable piece is slidably engaged inside the chair wheel body and connected to the connecting piece.

[0007] Preferably, a guide hole is provided in the chair wheel body, and the moving member is slidably fitted in the guide hole.

[0008] Preferably, the head of the adjusting bolt extends out of the side wall of the chair wheel body.

[0009] Preferably, an annular groove is provided on the outer side wall of the adjusting bolt, and a limiting member matching with the annular groove is provided in the chair wheel body.

[0010] Preferably, a first mounting hole for accommodating the limiting member is formed on the chair wheel body, and the first mounting hole passes through the top surface of the chair wheel body.

[0011] Preferably, a second mounting hole is formed on the chair wheel body, and the second mounting hole passes through the top surface of the chair wheel body.

[0012] Preferably, a protrusion is provided on the chair wheel body, and the protrusion can abut against the wheel body.

[0013] Preferably, a stopper for limiting the travel of the wheel frame is provided on the chair wheel body.

[0014] The utility model also provides a chair, comprising the above-mentioned chair wheels with locks.

[0015] Beneficial effects of the utility model:

[0016] The utility model discloses a chair wheel with a lock, which is achieved by installing a wheel body on a rotatable wheel frame and using an elastic member to pull the wheel frame. When the chair wheel is under load, the main body of the chair wheel will abut against the wheel body, thereby completing the braking action. When the chair wheel is not under load, the elastic member will pull the wheel frame to separate the wheel body from the main body of the chair wheel and reset it. At the same time, by designing a moving member and an adjusting component, after adjusting the position of the moving member, the moving member and the wheel frame will cooperate to stretch or shorten the elastic member, thereby adaptively adjusting the deformation of the elastic member, and correspondingly changing the resistance that the wheel frame has to overcome during the rotation process. Therefore, the user can adjust the deformation of the elastic member according to his or her actual situation, thereby overcoming the problem of being unable to brake due to light weight, and also improving the scope of application and stability of use of the chair wheel with a lock.

[0017] The utility model also discloses a chair, which can overcome the problem of being unable to brake due to the light weight of the user by using the above-mentioned locking chair wheels, making it convenient for the user to adjust the chair wheels according to his own needs, thereby improving the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 A schematic diagram of the structure of a chair wheel with lock provided in one embodiment of the utility model;

[0020] Figure 2 is a rear view of the chair wheel with lock;

[0021] Figure 3 for Figure 2 AA section diagram in;

[0022] Reference numerals:

[0023] 10. Chair wheel body; 11. First connecting shaft; 12. Support part; 13. Inner cavity; 14. Guide hole; 15. First mounting hole; 16. Second mounting hole; 17. Protrusion; 18. Stop block; 20. Wheel frame; 21. Second connecting shaft; 22. Swing arm; 30. Wheel body; 40. Moving part; 50. Elastic part; 60. Adjustment assembly; 61. Adjustment bolt; 611. Annular groove; 62. Connecting part; 70. Limiting part. DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Embodiment 1

[0031] like Figure 1-3 As shown, in one embodiment of the utility model, a chair wheel with a lock is provided, including a chair wheel body 10, a wheel frame 20, a wheel body 30, a moving part 40, an elastic part 50 and an adjustment assembly 60. A first connecting shaft 11 that can be connected to a chair body (not shown in the drawings) is installed on the chair wheel body 10, and the chair wheel body 10 extends downward to form two support parts 12. The wheel frame 20 is located between the two support parts 12, and the wheel frame 20 includes a second connecting shaft 21 and two swing arms 22 arranged in parallel. The two ends of the second connecting shaft 21 are respectively connected to the two swing arms 22, and each swing arm 22 is rotatably arranged on the corresponding support part 12.

[0032] The wheel body 30 is rotatably arranged between the two swing arms 22. The wheel body 30 can abut against the chair wheel body 10. The rotation axis of the wheel body 30 and the rotation axis of the wheel frame 20 are respectively parallel to the axis of the second connecting shaft 21, and the rotation axis of the wheel frame 20 is located between the rotation axis of the wheel body 30 and the axis of the second connecting shaft 21. The moving member 40 is slidably fitted in the chair wheel body 10. The elastic member 50 is a tension spring. The two ends of the elastic member 50 are respectively connected to the second connecting shaft 21 and the moving member 40. The elastic member 50 is used to apply elastic tension to the wheel frame 20. The adjustment component 60 is used to drive the moving member 40 to move in the chair wheel body 10 to adjust the elastic force of the elastic member 50.

[0033] The utility model discloses a chair wheel with a lock, which is provided by installing a wheel body 30 on a rotatable wheel frame 20 and using an elastic member 50 to pull the wheel frame 20. When the chair wheel is loaded, the chair wheel body 10 will abut against the wheel body 30, thereby completing the braking action. When the chair wheel is not loaded, the elastic member 50 will pull the wheel frame 20, so that the wheel body 30 is separated from the chair wheel body 10 and reset. At the same time, by designing a moving member 40 and an adjusting component 60, after adjusting the position of the moving member 40, the moving member 40 and the wheel frame 20 will cooperate to stretch or shorten the elastic member 50, which adaptively adjusts the deformation of the elastic member 50, and accordingly changes the resistance that the wheel frame 20 has to overcome during the rotation process. Therefore, the user can adjust the deformation of the elastic member 50 according to his or her actual situation, thereby overcoming the problem of being unable to brake due to a light weight, and also improving the scope of application and the stability of use of the chair wheel with a lock.

[0034] In one embodiment, the wheel body 10 is provided with an inner cavity 13, the adjustment assembly 60 includes an adjustment bolt 61, and a connecting piece 62 threadedly engaged with the adjustment bolt 61, the adjustment bolt 61 and the connecting piece 62 are both arranged in the inner cavity 13, the connecting piece 62 is a threaded sleeve, and the head of the adjustment bolt 61 extends out of the side wall of the wheel body 10. The wheel body 10 is provided with a guide hole 14 connected to the inner cavity 13, the moving piece 40 is slidably engaged in the guide hole 14, and is fixedly connected to the connecting piece 62.

[0035] Since the moving member 40 is restricted in the guide hole 14, by rotating the adjusting bolt 61, the connecting member 62 and the moving member 40 are driven to move in the inner cavity 13, thereby changing the distance between the moving member 40 and the second connecting shaft 21, and thus changing the deformation amount of the elastic member 50. Since the head of the adjusting bolt 61 is extended out of the side wall of the chair wheel body 10, it is convenient for the user to operate the adjusting bolt 61, thereby eliminating the problem of the traditional structure that the chair needs to be laid down for operation, and improving convenience.

[0036] In one embodiment, an annular groove 611 is provided on the outer wall of the adjusting bolt 61, and the axis of the annular groove 611 coincides with the axis of the adjusting bolt 61, and a stopper 70 matching the annular groove 611 is provided in the chair wheel body 10. By designing the stopper 70 in the chair wheel body 10, after the stopper 70 matches the annular groove 611, the adjusting bolt 61 can only rotate in the chair wheel body 10, and will not move along its own axis direction, thus ensuring the stability of the adjusting bolt 61. The stopper 70 can be a component such as an elastic retaining spring or a stopper pin that can be used to prevent the adjusting bolt 61 from axial movement.

[0037] In one embodiment, the wheel body 10 is provided with a first mounting hole 15 for accommodating the limiting member 70, the first mounting hole 15 passes through the top surface of the wheel body 10 and communicates with the inner cavity 13. The wheel body 10 is provided with a second mounting hole 16 communicated with the inner cavity 13, the second mounting hole 16 passes through the top surface of the wheel body 10. When assembling the wheel with lock, the connecting member 62, the moving member 40 and the limiting member 70 can be quickly installed in the wheel body by using the first mounting hole 15 and the second mounting hole 16, thereby improving the assembly efficiency.

[0038] In one embodiment, in order to improve the braking effect, a protrusion 17 is provided on the chair wheel body 10 , and the protrusion 17 can be abutted against the wheel body 30 .

[0039] In one embodiment, a stopper 18 for limiting the travel of the wheel frame 20 is provided on the support portion 12 of the chair wheel body 10. Under the blocking action of the stopper 18, even under the pulling force of the elastic member 50, the swing arm 22 of the wheel frame 20 has an extreme position on the support portion 12, thereby preventing the wheel frame 20 from swinging excessively.

[0040] Embodiment 2

[0041] In another embodiment of the utility model, a chair is provided, including the locking wheels in the above-mentioned embodiment 1. By using the above-mentioned locking wheels, the problem of being unable to brake due to the light weight of the user can be overcome, and the user can adjust the wheels according to his own needs, thereby improving the user's usage experience.

[0042] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A chair wheel with lock, characterized in that: include: Chair wheel body (10); A wheel frame (20) rotatably disposed on the chair wheel body (10); A wheel body (30) is rotatably disposed on the wheel frame (20), and the wheel body (30) can abut against the chair wheel body (10); A moving part (40) movably arranged in the chair wheel body (10); An elastic member (50) is respectively connected to the wheel frame (20) and the moving member (40), and the elastic member (50) is used to apply an elastic pulling force to the wheel frame (20); as well as An adjusting component (60) is used to drive the movable member (40) to move inside the chair wheel body (10) so as to adjust the elastic force of the elastic member (50). The adjusting component (60) includes an adjusting bolt (61) and a connecting member (62) threadedly engaged with the adjusting bolt (61). The adjusting bolt (61) is rotatably arranged on the chair wheel body (10). The connecting member (62) is arranged inside the chair wheel body (10). The connecting member (62) is connected to the movable member (40).

2. The lockable chair wheel according to claim 1, characterized in that: The moving member (40) is slidably fitted in the chair wheel body (10).

3. The lockable chair wheel according to claim 2, characterized in that: A guide hole (14) is provided in the chair wheel body (10), and the moving member (40) is slidably fitted in the guide hole (14).

4. The lockable chair wheel according to claim 2, characterized in that: The head of the adjusting bolt (61) protrudes out of the side wall of the chair wheel body (10).

5. The lockable chair wheel according to claim 2, characterized in that: An annular groove (611) is provided on the outer side wall of the adjusting bolt (61), and a limiting member (70) matching with the annular groove (611) is provided inside the chair wheel body (10).

6. The lockable chair wheel according to claim 5, characterized in that: The chair wheel body (10) is provided with a first mounting hole (15) for accommodating the limiting member (70), and the first mounting hole (15) passes through the top surface of the chair wheel body (10).

7. The lockable chair wheel according to claim 1, characterized in that: The chair wheel body (10) is provided with a second mounting hole (16), and the second mounting hole (16) passes through the top surface of the chair wheel body (10).

8. The lockable chair wheel according to claim 1, characterized in that: The chair wheel body (10) is provided with a protrusion (17), and the protrusion (17) can abut against the wheel body (30).

9. The lockable chair wheel according to claim 1, characterized in that: The chair wheel body (10) is provided with a stopper (18) for limiting the travel of the wheel frame (20).

10. A chair, characterized in that: The invention comprises the chair wheel with lock as claimed in any one of claims 1 to 9.

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