A mobile wheel

Abstract

The utility model discloses a kind of mobile wheels provided in the application, it includes mounting bracket, moving ring and ball, sliding groove extending along up-down direction is formed in mounting bracket, first magnetic force piece is arranged in mounting bracket and fixed opposite mounting bracket, moving ring can be moved along up-down direction in sliding groove, second magnetic force piece is arranged on moving ring, when being in natural state, first magnetic force piece and second magnetic force piece repel each other, ball is located in the side of moving ring away from first magnetic force piece, ball can be moved along up-down direction at sliding groove, ball can be moved to part and go out first opening outside.This application in mobile wheel is driven by repulsion between magnetic force piece and ball pops out to form rolling support, change the sliding friction of traditional rubber foot pad of furniture into low-noise rolling friction, avoid the secondary noise of traditional roller bearing simultaneously;When furniture is bearing, ball is stored, mounting bracket is grounded, eliminate the risk of shaking under moving state.

Description

Technical Field

[0001] This utility model relates to the field of furniture moving auxiliary equipment, and in particular to a moving wheel. Background Technology

[0002] In the current use of furniture, some furniture that needs to be moved often rubs against the ground and produces sharp noise when moved. To facilitate movement, wheels are usually installed on the furniture. However, the wheels are difficult to fix and can easily slip when the user sits on the furniture, causing inconvenience. Therefore, there is an urgent need for an auxiliary device that can improve the performance of furniture handling and movement, while reducing the movement of furniture during use. Utility Model Content

[0003] The purpose of this utility model is to provide a movable wheel to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A movable wheel, comprising:

[0006] The mounting bracket has a sliding groove extending in the vertical direction, a first opening communicating with the sliding groove at the bottom of the mounting bracket, and a first magnetic element disposed inside the mounting bracket.

[0007] A movable ring is capable of moving up and down within the sliding groove. The movable ring is provided with a second magnetic element, which is located below the first magnetic element. In its natural state, the sides of the first magnetic element and the second magnetic element that are close to each other repel each other.

[0008] A ball bearing, which is capable of sliding vertically in the sliding groove and located below the moving ring, abuts against the side of the second magnetic member away from the first magnetic member, and the ball bearing is capable of moving to pass through the first opening.

[0009] The technical solution has at least the following beneficial effects: When using the movable wheels of this application, a predetermined number of movable wheels are first fixed to the furniture that needs to be moved or transported. When there is no load on the furniture, the repulsive force between the first magnetic component and the second magnetic component on the multiple movable wheels causes the second magnetic component to drive the movable ring to slide downward in the mounting frame, and causes the roller that abuts against the movable ring to move downward until it passes through the first opening and abuts against the ground. At this time, the balls on each movable wheel support the furniture, so that the movement of the furniture is transformed into the rolling of the balls, thereby improving the mobility of the furniture.

[0010] When a person or heavy object is on the furniture and the overall weight exceeds the threshold, multiple moving wheels are simultaneously subjected to the pressure of the furniture and the load. This pressure is greater than the sum of the repulsive forces between the first and second magnetic components on the multiple moving wheels, causing the furniture and the mounting frame fixed on the furniture to move down synchronously until the mounting frame touches the ground. At this time, the first magnetic component and the moving ring move towards each other, and the ball bearings are completely retracted into the mounting frame. The friction between the furniture and the ground becomes sliding friction with greater friction, which reduces the relative movement between the furniture and the ground when a person sits on the furniture and improves the placement stability of the furniture at this moment.

[0011] As can be seen from the above, the movable wheel in this application drives the ball bearings to pop out and form rolling support through magnetic repulsion, changing the sliding friction of traditional rubber feet pads of furniture to low-noise rolling friction, while avoiding the secondary noise of traditional roller bearings; when the furniture is under load, the ball bearings are stored and the mounting bracket is grounded, eliminating the risk of shaking during movement.

[0012] As a further improvement to the above technical solution, the mounting bracket includes an outer sleeve and an inner sleeve. The sliding groove is formed inside the outer sleeve. One end of the inner sleeve is detachably mounted to the end of the outer sleeve away from the first opening. The inner sleeve, the moving ring, and the ball bearing are arranged sequentially from top to bottom.

[0013] As a further improvement to the above technical solution, the outer casing is provided with a second opening at the end away from the first opening, and the inner frame is threadedly connected to the second opening.

[0014] As a further improvement to the above technical solution, the inner wall of the outer jacket is provided with multiple guide strips along the circumference, and the outer wall of the movable ring is provided with multiple guide grooves along the circumference. The guide strips and the guide grooves extend in the vertical direction and are adapted to each other in shape.

[0015] As a further improvement to the above technical solution, a connecting groove is provided at the end of the inner frame away from the moving ring.

[0016] As a further improvement to the above technical solution, the connecting groove can be detachably fitted with a clamping block, and the end of the clamping block away from the inner frame forms a clamping space extending in the horizontal direction.

[0017] As a further improvement to the above technical solution, a first mounting groove is provided on the side wall of the inner frame near the movable ring, and the first magnetic component is installed in the first mounting groove.

[0018] As a further improvement to the above technical solution, a second mounting groove is provided at the end of the movable ring away from the inner frame, and the second magnetic component is mounted in the second mounting groove.

[0019] As a further improvement to the above technical solution, the cross-sectional area of ​​the first opening is smaller than the maximum cross-sectional area of ​​the ball.

[0020] As a further improvement to the above technical solution, an annular groove is provided at one end of the outer casing away from the inner frame. The sliding groove, the annular groove and the first opening are connected in sequence. The cross-sectional area of ​​the annular groove is smaller than that of the sliding groove, and the cross-sectional area of ​​the annular groove is larger than that of the first opening. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0024] Figure 3 This is a cross-sectional view of the overall structure of the outer jacket of this utility model;

[0025] Figure 4 This is a schematic diagram of the overall structure of the inner frame of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the movable ring of this utility model;

[0027] Figure 6 This is a cross-sectional view of the inner frame of this utility model after the addition of a clamping block. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] The ease of movement and quiet operation of existing furniture, such as chairs, have always been key concerns for users. In environments such as classrooms and meeting rooms, the friction between the chair legs and the ground when the chair is moved can generate sharp noise, which can disturb others and affect work or study efficiency. To address this, casters are usually added to chairs to improve their mobility and reduce noise. However, this can cause the chair to move when a person is sitting on it, making it difficult to keep it still. Therefore, this application provides a caster to eliminate the aforementioned defects.

[0033] Reference Figures 1-5 This application provides a movable wheel, which includes a mounting frame 1, a movable ring 2, and a ball bearing 3. The mounting frame 1 has a sliding groove 11 extending in the vertical direction. The bottom of the mounting frame 1 is provided with a first opening 12 communicating with the sliding groove 11. A first magnetic element 4 is provided in the mounting frame 1 and is fixed relative to the mounting frame 1. The movable ring 2 can move in the vertical direction relative to the mounting frame 1 in the sliding groove 11. A second magnetic element 5 is provided on the movable ring 2. The second magnetic element 5 is located below the first magnetic element 4. In the natural state, the sides of the first magnetic element 4 and the second magnetic element 5 that are close to each other repel each other. The ball bearing 3 is located on the side of the movable ring 2 away from the first magnetic element 4. The ball bearing 3 can move in the vertical direction relative to the mounting frame 1 at the sliding groove 11. The ball bearing 3 always abuts against the movable ring 2 or the side of the second magnetic element 5 away from the first magnetic element 4. The ball bearing 3 can move to partially protrude out of the first opening 12.

[0034] In this application, both the first magnetic element 4 and the second magnetic element 5 are disc-shaped magnets.

[0035] As can be seen from the above, when using the movable wheels of this application, a predetermined number of movable wheels are first fixed to the furniture that needs to be moved or transported. When there is no load on the furniture, the repulsive force between the first magnetic element 4 and the second magnetic element 5 on the multiple movable wheels causes the second magnetic element 5 to drive the movable ring 2 to slide downward in the mounting frame 1, and causes the roller that abuts against the movable ring 2 to move downward until it passes through the first opening 12 and abuts against the ground. At this time, the ball bearings 3 on each movable wheel support the furniture, so that the movement of the furniture is transformed into the rolling of the ball bearings 3, thereby improving the mobility of the furniture.

[0036] When a person or heavy object is on the furniture and the overall weight exceeds the threshold, multiple moving wheels are simultaneously subjected to the pressure of the furniture and the load. This pressure is greater than the sum of the repulsive forces between the first magnetic component 4 and the second magnetic component 5 on the multiple moving wheels, causing the furniture and the mounting frame 1 fixed on the furniture to move down synchronously until the mounting frame 1 touches the ground. At this time, the first magnetic component 4 and the moving ring 2 move towards each other, and the ball bearing 3 moves upward relative to the mounting frame 1. At the same time, the second magnetic component 5 attracts the ball bearing 3, so that the ball bearing 3 moves upward relative to the mounting frame 1 with the moving ring 2 until the ball bearing 3 is completely stored in the mounting frame 1. The friction between the furniture and the ground becomes sliding friction with greater friction, which reduces the relative movement between the furniture and the ground when a person sits on the furniture and improves the placement stability of the furniture at this moment.

[0037] The movable wheel in this application uses magnetic repulsion to drive the ball bearing 3 to pop out and form a rolling support, which changes the sliding friction of traditional rubber feet pads of furniture to low-noise rolling friction, while avoiding the secondary noise of traditional roller bearings; when the furniture is under load, the ball bearing 3 is stored and the mounting bracket 1 is grounded, eliminating the risk of shaking when moving.

[0038] To facilitate the installation of the ball bearing 3 and the movable ring 2 into the mounting frame 1, in this embodiment, the mounting frame 1 includes an outer shell 13 and an inner frame 14. The outer shell 13 is a hollow structure with a sliding groove 11 inside. One end of the inner frame 14 is detachably installed on the end of the outer shell 13 away from the first opening 12. The inner frame 14, the movable ring 2, and the ball bearing 3 are arranged sequentially from top to bottom. By disassembling the mounting frame 1 into the outer shell 13 and the inner frame 14, after removing the inner frame 14 from the outer shell 13, the remaining hollow outer shell 13 is left. At this time, the ball bearing 3 and the movable ring 2 with the second magnetic component 5 are sequentially placed into the outer shell 13 until the movable ring 2 is stable inside the outer shell 13. Then, the inner frame 14 is installed onto the outer shell 13 to close the sliding groove 11, thereby completely enclosing the movable ring 2 and the ball bearing 3 inside the mounting frame 1. This improves the ease of installation and removal and the stability of the movable ring 2 and the ball bearing 3 on the mounting frame 1, and reduces the risk of the ball bearing 3 and the movable ring 2 falling out of the mounting frame 1.

[0039] As a further embodiment, the outer sleeve 13 is provided with a second opening at the end away from the first opening 12, and the outer sleeve 13 is provided with an internal thread at the second opening. The outer side wall of one end of the inner frame 14 is provided with an external thread. The external thread and the internal thread are matched so that the inner frame 14 is threadedly connected to the second opening and the sliding groove 11 of the outer sleeve 13 is closed.

[0040] Specifically, the inner frame 14 includes a first single frame 141 and a second single frame 142 connected sequentially from top to bottom. The cross-sectional area of ​​the first single frame 141 is equal to the cross-sectional area of ​​the outer casing 13, and the side of the first single frame 141 closest to the second single frame 142 abuts against the outer casing 13. The cross-sectional area of ​​the first single frame 141 is larger than the cross-sectional area of ​​the second single frame 142. The second single frame 142 is provided with external threads and can be threadedly connected to the outer casing 13. The first single frame 141 can limit the length of the second single frame 142 entering the outer casing 13, preventing the length of the second single frame 142 entering the outer casing 13 from being too large and reducing the space that the moving ring 2 can move. This allows the ball bearing 3, which is in close contact with the moving ring 2, to move fully and be completely stored inside the outer casing 13.

[0041] The inner side of the outer sleeve 13 is provided with a plurality of guide strips 15 extending in the vertical direction along the circumference. The outer wall of the movable ring 2 is provided with a plurality of guide grooves 21 extending in the vertical direction along the circumference. The shapes of the guide strips 15 and the guide grooves 21 are adapted to each other. When the movable ring 2 moves inside the outer sleeve 13, the guide grooves 21 move in the vertical direction relative to the guide strips 15. In this embodiment, the guide strips 15 are located below the internal thread, and the radius of the movable ring 2 is smaller than the minimum radius of the internal thread, which facilitates the placement of the movable ring 2.

[0042] To facilitate the installation of the casters onto the chair legs, the first frame 141 has a connecting groove 16 at the end away from the casters. An elastic buffer pad is provided on the circumferential side wall of the connecting groove 16. The chair legs are directly inserted into the connecting groove 16, and the elastic deformation of the buffer pad clamps the chair legs, thereby achieving the overall connection between the chair and the casters. On the other hand, the inner frame 14 can be equipped with various sizes of connecting grooves 16, which allows for the installation of chairs of various shapes and sizes, improving the practicality of the casters.

[0043] The connecting groove 16 can be detachably installed with a clamping block 17. The end of the clamping block 17 away from the inner frame 14 forms a clamping space extending in the horizontal direction. Through the clamping space extending in the horizontal direction, the crossbar of various furniture can be supported, so that the moving wheels can not only be installed on the ends of chair legs, but also on furniture with crossbars at the bottom, further increasing the number of moving wheels installed on different furniture and improving the practicality of the moving wheels.

[0044] The inner frame 14 has a first mounting groove 18 on the side wall of the second frame 142 near the moving ring 2. The first magnetic component 4 is installed in the first mounting groove 18. The moving ring 2 has a second mounting groove 22 on the side wall away from the inner frame 14. The second magnetic component 5 is installed in the second mounting groove 22. First, the use of the first mounting groove 18 and the second mounting groove 22 allows the first magnetic component 4 and the second magnetic component 5 to be completely hidden on the second frame 142 and the moving ring 2, avoiding direct contact between the first magnetic component 4 and the second magnetic component 5. This provides a basis for the intermittent relative movement of the first magnetic component 4 and the second magnetic component 5, allowing them to randomly enter a separated state moving away from each other. Second, after the second magnetic component 5 is installed in the second mounting groove 22, the second magnetic component 5 can directly contact the ball 3. When the moving ring 2 drives the second magnetic component 5 to move, the ball 3 is directly attracted by the magnetic attraction properties of the second magnetic component 5 itself, allowing the ball 3 to move stably with the moving ring 2.

[0045] To prevent the ball bearing 3 from falling directly out of the first opening 12, in this embodiment, the cross-sectional area of ​​the first opening 12 is smaller than the maximum cross-sectional area of ​​the ball bearing 3. When in its natural state, the first magnetic component 4 enables the ball bearing 3 to move toward the first opening 12 through mutual repulsive magnetic force. At this time, the first opening 12 restricts the movement of the ball bearing 3, so that the ball bearing 3 can both protrude from the mounting bracket 1 and contact the ground to realize the movement of the furniture, and also restrict the complete disengagement of the ball bearing 3.

[0046] An annular groove 131 is provided at the end of the outer casing 13 away from the inner frame 14. The sliding groove 11, the annular groove 131 and the first opening 12 are connected in sequence. The cross-sectional shape of the sliding groove 11, the annular groove 131 and the first opening 12 are all circular and their centers are on the same vertical axis. The cross-sectional area of ​​the annular groove 131 is smaller than that of the sliding groove 11 and larger than that of the first opening 12. The ball 3 is guided by the sliding groove 11, the annular groove 131 and the first opening 12, which have gradually reduced cross-sectional areas, so that the ball 3 always falls into the first opening 12.

[0047] As a further implementation, a rubber pad is provided circumferentially at the bottom of the outer cover 13. When the outer cover 13 comes into contact with the ground, the rubber pad increases the friction between the moving wheels and the ground, reducing the movement of the furniture.

[0048] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A type of movable wheel, characterized in that, include: Mounting bracket (1), wherein a sliding groove (11) extending in the vertical direction is formed in the mounting bracket (1), and a first opening (12) communicating with the sliding groove (11) is provided at the bottom of the mounting bracket (1), and a first magnetic element (4) is provided in the mounting bracket (1); The movable ring (2) is able to move in the vertical direction within the sliding groove (11). The movable ring (2) is provided with a second magnetic element (5). The second magnetic element (5) is located below the first magnetic element (4). When in a natural state, the sides of the first magnetic element (4) and the second magnetic element (5) that are close to each other repel each other. The ball (3) is able to slide in the vertical direction at the sliding groove (11) and is located below the moving ring (2). The ball (3) abuts against the side of the second magnetic member (5) away from the first magnetic member (4). The ball (3) is able to move to pass through the first opening (12).

2. A movable wheel according to claim 1, characterized in that, The mounting bracket (1) includes an outer sleeve (13) and an inner sleeve (14). The sliding groove (11) is formed inside the outer sleeve (13). One end of the inner sleeve (14) is detachably mounted on the end of the outer sleeve (13) away from the first opening (12). The inner sleeve (14), the moving ring (2), and the ball bearing (3) are arranged in order from top to bottom.

3. A movable wheel according to claim 2, characterized in that, The outer casing (13) has a second opening at one end away from the first opening (12), and the inner frame (14) is threaded to the second opening.

4. A movable wheel according to claim 2, characterized in that, The inner wall of the outer jacket (13) is provided with multiple guide strips (15) along the circumferential direction, and the outer wall of the moving ring (2) is provided with multiple guide grooves (21) along the circumferential direction. The guide strips (15) and the guide grooves (21) extend in the vertical direction and are adapted to each other in shape.

5. A movable wheel according to claim 2, characterized in that, The inner frame (14) has a connecting groove (16) at the end away from the moving ring (2).

6. A movable wheel according to claim 5, characterized in that, The connecting groove (16) is detachably fitted with a clamping block (17), and the clamping block (17) has a clamping space extending in the horizontal direction at one end away from the inner frame (14).

7. A movable wheel according to claim 2, characterized in that, The inner frame (14) has a first mounting groove (18) on one side wall near the moving ring (2), and the first magnetic component (4) is installed in the first mounting groove (18).

8. A movable wheel according to claim 2, characterized in that, The movable ring (2) has a second mounting groove (22) at one end away from the inner frame (14), and the second magnetic component (5) is installed in the second mounting groove (22).

9. A movable wheel according to claim 2, characterized in that, The cross-sectional area of ​​the first opening (12) is smaller than the maximum cross-sectional area of ​​the ball (3).

10. A movable wheel according to claim 9, characterized in that, An annular groove (131) is provided at one end of the outer casing (13) away from the inner frame (14). The sliding groove (11), the annular groove (131) and the first opening (12) are connected in sequence. The cross-sectional area of ​​the annular groove (131) is smaller than that of the sliding groove (11), and the cross-sectional area of ​​the annular groove (131) is larger than that of the first opening (12).

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