Roller

Abstract

The utility model discloses a roller which is mainly assembled on furniture, such as the bottom of a seat, a base is fixed at the bottom of the seat during installation, when no person sits on the seat, the elastic force of a top spring can bear the weight of the seat and is not compressed, and a roller body can pivot easily; when a person sits on the seat or an article is placed on the seat, the elastic force applied by the top spring is overcome so that the top spring is compressed, the base can drive the pressing piece to move downwards to keep contact with the wheel body, the wheel body is not prone to pivoting or cannot pivot, and therefore the moving effect of the seat is limited. Compared with the prior art, the wheel body can be kept in a state that the wheel body can be easily pivoted or cannot be easily pivoted or cannot be pivoted according to the use state of assembled furniture such as a seat, so that the functionality is effectively increased, and the requirements of users can be better met.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a roller. Background Technology

[0002] Existing furniture with casters, such as chairs, has casters that are directly pivotally mounted on the bottom of the chair. With just a little external force, the chair can be easily moved. This means that the user's need for the chair to remain stationary when seated cannot be met, resulting in a limited functionality that fails to satisfy user needs. Utility Model Content

[0003] The main purpose of this invention is to provide a roller that increases the functionality of the roller when it is mounted on, for example, a seat, in order to meet user needs.

[0004] To achieve the above objectives, this utility model proposes a roller, including a base and a wheel frame. The base is used to fix the roller in the position to be installed. A wheel body is pivotally mounted on the bottom of the wheel frame. A pressure member is provided on the wheel frame above the wheel body and fixedly connected to the base. The top of the wheel frame is movably connected to the base and the wheel frame can move relative to the base between a position where the wheel body contacts the pressure member and a position where the wheel body contacts the pressure member. A top spring is also provided, which is used to apply a spring force to the wheel frame to move the wheel body away from the pressure member.

[0005] Preferably, the bottom wall of the base is provided with a vertically extending guide post, the top of the wheel frame is provided with a guide hole corresponding to the position of the guide post, allowing the guide post to be inserted or removed, the wheel frame is provided with a limiting hole below the guide hole, the limiting hole is connected to the guide hole and the diameter of the limiting hole is larger than the diameter of the guide hole, the end of the guide post is provided with a cap, the cap is located in the limiting hole to prevent the guide post from disengaging from the guide hole.

[0006] Preferably, the cap and the guide post are integrally formed, or the guide post is provided with a screw, the cap is the nut of the screw, and the screw shank passes through the base and is screwed to the position to be installed.

[0007] Preferably, the base is provided with four guide posts, which are distributed in a rectangular interval, and the number of guide holes corresponds to the number of guide posts.

[0008] Preferably, a through hole is formed at the top of the wheel frame corresponding to the position above the wheel body, and the pressure member is connected to the base by bolts. The through hole is used for the shank of the bolt to pass through to form a clearance.

[0009] Preferably, the base bottom is provided with a first protrusion corresponding to the position of the through hole, the pressing piece top is provided with a second protrusion corresponding to the position of the through hole, the second protrusion is provided with a recess on the opposite side of the first protrusion, the first protrusion partially extends into the recess, the rod of the bolt passes through the second protrusion and is screwed with the first protrusion, so as to realize the locking of the base and the pressing piece.

[0010] Preferably, the top spring sleeve is arranged on the second protrusion, and the two ends of the top spring are respectively elastically abutted against the base and the wheel carrier.

[0011] Preferably, the number of the through holes is two.

[0012] Preferably, the opposite side of the pressing piece to the wheel body is an arc surface.

[0013] Preferably, the arc surface is provided with a plurality of protrusions.

[0014] The utility model discloses a technical scheme, which comprises a base, a wheel carrier and a wheel body pivotally installed on the wheel carrier. The base and the wheel carrier are movably connected. A pressing piece is fixedly connected to the base above the wheel carrier. The wheel carrier can move relative to the base between a position where the pressing piece contacts the wheel body and a position where the pressing piece is away from the wheel body. The wheel carrier is subjected to a spring force of a top spring, which is directed away from the pressing piece. The utility model is mainly assembled on furniture, such as the bottom of a seat. When the base is fixed to the bottom of the seat, the spring force of the top spring can support the weight of the seat without being compressed when the seat is unoccupied, and the wheel body can be easily pivoted. When the seat is occupied or an object is placed on the seat, the spring force of the top spring is overcome, and the top spring is compressed. The base can drive the pressing piece to move downward to contact the wheel body, so that the wheel body is not easily pivoted or cannot be pivoted, thereby limiting the movement of the seat. Compared with the prior art, the utility model can keep the wheel body in a state of being easily pivoted or not easily pivoted or unable to be pivoted according to the use state of the assembled furniture, such as the seat, effectively increases the functionality, and better meets the user's needs. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a perspective view of the utility model;

[0016] Fig. 2 It is a first angle exploded view of the utility model;

[0017] Fig. 3 It is a second angle exploded view of the utility model. DETAILED DESCRIPTION

[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are 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, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. 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 by this utility model.

[0021] This utility model proposes a roller.

[0022] In this embodiment of the utility model, such as Figs. 1 to 3 As shown, the roller includes a base 1 and a wheel frame 2. The base 1 is used to fix it in the position to be installed. The bottom of the wheel frame 2 is pivotally mounted with a wheel body 3. The wheel frame 2 is provided with a pressure member 4 fixedly connected to the base 1 at a position corresponding to the wheel body 3. The top of the wheel frame 2 is movably connected to the base 1 and the wheel frame 2 can move relative to the base 1 between positions where the wheel body 3 contacts and moves away from the pressure member 4. A top spring 5 is also provided, which is used to apply a spring force to the wheel frame 2 to move the wheel body 3 away from the pressure member 4.

[0023] Understandably, multiple of these utility models are usually used together and assembled on furniture.

[0024] Specifically, the bottom wall of the base 1 is provided with a vertically extending guide column 11, the top of the wheel frame 2 is provided with a guide hole 21 corresponding to the position of the guide column 11, the wheel frame 2 is provided with a limiting hole 22 corresponding to the position below the guide hole 21, the limiting hole 22 is in communication with the guide hole 21 and the hole diameter of the limiting hole 22 is greater than that of the guide hole 21, and the end of the guide column 11 is provided with a cap portion 12, which is located in the limiting hole 22 to limit the guide column 11 from being separated from the guide hole 21.

[0025] Specifically, the cap portion 12 and the guide column 11 are an integral structure, or the guide column 11 is provided with a screw, and the cap portion 12 is a screw cap, and the screw rod passes through the base 1 and is screwed with the to-be-installed position.

[0026] Specifically, the base 1 is provided with four guide columns 11, which are distributed in a rectangular shape, and the number of guide holes 21 corresponds to the number of guide columns 11.

[0027] Specifically, the top of the wheel frame 2 is provided with a through hole 23 corresponding to the position above the wheel body 3, the pressing piece 4 is connected with the base 1 through a bolt, and the through hole 23 is used for the rod of the bolt to pass through to form an avoidance.

[0028] Specifically, the bottom of the base 1 is provided with a first protruding portion 13 corresponding to the position of the through hole 23, the top of the pressing piece 4 is provided with a second protruding portion 41 corresponding to the position of the through hole 23, one side of the second protruding portion 41 opposite to the first protruding portion 13 is provided with a recess 42, the first protruding portion 13 partially extends into the recess 42, the rod of the bolt passes through the second protruding portion 41 and is screwed with the first protruding portion 13, and the locking of the base 1 and the pressing piece 4 is realized.

[0029] Specifically, the top spring 5 is sleeved on the second protruding portion 41, and the two ends of the top spring 5 are elastically abutted with the base 1 and the wheel frame 2, respectively.

[0030] Specifically, the number of through holes 23 is two.

[0031] The side of the pressing piece 4 opposite to the wheel body 3 is an arc surface.

[0032] Specifically, the arc surface is provided with a plurality of protruding strips 43.

[0033] The utility model discloses a technical scheme including base, wheel frame and the wheel body pivotally installed in wheel frame, wherein, base and wheel frame are the activity connection, set up the pressure spare fixed connection with base in the position above wheel frame corresponding wheel body, wheel frame can be relative base and move between the position of making pressure spare and wheel body contact and far away, and the elastic force of the top spring is applied to wheel frame and moves in the direction of wheel body far away pressure spare. The utility model mainly assembles in furniture, such as the bottom of seat, when installing, the base is fixed in the bottom of seat, when the seat is not occupied, the elastic force of top spring can bear the weight of seat and not be compressed, and the wheel body can pivot easily, when the seat is occupied or the article is placed on the seat, the elastic force of top spring is overcome to make top spring be compressed, make the base can drive pressure spare and descend to keep contact with wheel body, make wheel body not pivot easily or unable to pivot, thereby limit the moving effect of seat. Compared with the tradition, the utility model can make wheel body keep pivot easily or not pivot easily or unable to pivot according to the use state of the furniture such as seat assembled, effectively increase the functionality, and can satisfy the demand of user more.

[0034] The above-mentioned is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and the equivalent structural transformation of the utility model specification and the attached drawing contents is made under the function new type idea of the utility model, or direct / indirect application in other related technical fields are included in the patent protection range of the utility model.

Claims

1. A roller, characterized in that: The device includes a base (1) and a wheel frame (2). The base (1) is used to fix the device in the position to be installed. The bottom of the wheel frame (2) is pivotally mounted with a wheel body (3). The wheel frame (2) is provided with a pressure member (4) fixedly connected to the base (1) at a position above the wheel body (3). The top of the wheel frame (2) is movably connected to the base (1), and the wheel frame (2) can move relative to the base (1) between positions where the wheel body (3) contacts the pressure member (4) and moves away from it. A top spring (5) is also provided, which is used to apply a spring force to the wheel frame (2) to move the wheel body (3) away from the pressure member (4).

2. The roller as described in claim 1, characterized in that: The base (1) has a vertically extending guide post (11) on its bottom wall. The top of the wheel frame (2) has a guide hole (21) at the position corresponding to the guide post (11) for the guide post (11) to be inserted or removed. The wheel frame (2) has a limiting hole (22) at the position below the guide hole (21). The limiting hole (22) is connected to the guide hole (21) and the diameter of the limiting hole (22) is larger than the diameter of the guide hole (21). The end of the guide post (11) has a cap (12) located in the limiting hole (22) to restrict the guide post (11) from disengaging from the guide hole (21).

3. The roller as described in claim 2, characterized in that: The cap (12) and the guide post (11) are integrally formed, or the guide post (11) is provided with a screw, and the cap (12) is the nut of the screw, and the screw rod passes through the base (1) and is screwed to the position to be installed.

4. The roller as described in claim 2, characterized in that: The base (1) is provided with four guide posts (11), which are arranged in a rectangular interval. The number of guide holes (21) corresponds to the number of guide posts (11).

5. The roller as described in claim 1, characterized in that: The top of the wheel frame (2) has a through hole (23) at the position above the wheel body (3). The pressure member (4) is connected to the base (1) by bolts. The through hole (23) is used for the shank of the bolt to pass through to form a clearance.

6. The roller as described in claim 5, characterized in that: The base (1) has a first protrusion (13) at the bottom corresponding to the through hole (23), and the pressure member (4) has a second protrusion (41) at the top corresponding to the through hole (23). The side of the second protrusion (41) opposite to the first protrusion (13) has a recess (42). The first protrusion (13) partially extends into the recess (42). The shank of the bolt passes through the second protrusion (41) and is screwed to the first protrusion (13) to lock the base (1) and the pressure member (4).

7. The roller as described in claim 6, characterized in that: The top spring (5) is sleeved on the second protrusion (41), and the two ends of the top spring (5) elastically abut against the base (1) and the wheel frame (2) respectively.

8. The roller as described in claim 5, characterized in that: The number of through holes (23) is two.

9. The roller as claimed in claim 1, characterized in that: The side of the pressure piece (4) opposite to the wheel body (3) is an arc surface.

10. The roller as described in claim 9, characterized in that: The arc surface is provided with several raised strips (43).

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