A table and chair wheel

Abstract

The utility model relates to a push wheel structure technical field especially relates to a table and chair push wheel, including wheel frame, the wheel frame right side bottom end sets up the support part for supporting, the wheel frame inside bottom end swing installation has the pulley, the pulley has two kinds of forms of wheel slide state and suspension state, the wheel frame top left side swing installation is used for adjusting the adjusting part of pulley height, the adjusting part includes swing installation in the wheel frame top left side swing clamp frame, the swing clamp frame side whole is triangle structure, swing clamp frame bottom end corner place is through swing axle and wheel frame and pulley between swing joint, the utility model adjusting part adopts swing clamp frame and the linkage design of adapter plate, and the user can control the height change of pulley through simple down pressure or lifting action, and the wheel slide state and support state are switched easily, and the device structure operation is simple, responds quickly, does not need complex tool, and the user experience and operation efficiency have been improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of pusher structure technology, and in particular to a table and chair pusher. Background Technology

[0002] In everyday furniture and equipment, casters are commonly installed on their bottoms (such as table legs) for easy movement and positioning. Existing casters typically consist of a wheel frame, rollers, and a locking mechanism to control the rollers' movement. Their basic working principle is: when movement is needed, the rollers can freely turn and roll; when a fixed position is required, the locking mechanism (usually a brake pad or locking teeth) is triggered to restrict the rollers' rolling, thus stopping the equipment.

[0003] However, in practical applications, a significant flaw has been found in this traditional omnidirectional wheel design: even after locking, the entire tabletop is still prone to wobbling. The root cause of this problem lies primarily in its locking mechanism. Most existing locking mechanisms only provide unidirectional constraint on the rolling freedom of the wheels, lacking effective limitations on the "yaw" and "lateral micro-movement" degrees of freedom caused by the inherent clearance between the wheel frame and the roller connection structure, as well as the point or line contact between the locking element and the roller. Therefore, when a person leans against the table, or when the table is subjected to horizontal forces or torques, the locked omnidirectional wheels will undergo slight deformation and displacement within the allowable range of their structural clearances. This is transmitted to the device itself, manifesting as uncomfortable wobbling. This deficiency is amplified in specific application scenarios, such as mahjong tables. Mahjong machines, due to their intricate internal lifting and shuffling mechanisms, inherently require greater stability than ordinary tables. More importantly, during use, the user's movements—such as shuffling, stacking, and retrieving tiles—expose the table to continuous, multi-directional, intermittent impacts. If, even with the wheels fixed, there is still wobbling, it not only creates a loose and unstable feel but also negatively impacts the user's concentration and experience. Therefore, a type of table and chair wheel is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A table and chair pusher includes a wheel frame, a support part for support is provided at the bottom right side of the wheel frame, a pulley is movably installed at the bottom inside the wheel frame, the pulley has two forms: a sliding state and a suspended state, and an adjustment part for adjusting the height of the pulley is movably installed at the top left side of the wheel frame. The adjustment part includes a movable pressure plate frame that is movably installed on the left side of the top of the wheel frame. The side of the movable pressure plate frame is generally triangular. The bottom corner of the movable pressure plate frame is movably connected to the wheel frame and the pulley through a movable shaft.

[0006] Preferably, a hook hole is provided on the right side of the front of the wheel frame, and a hook spring is hooked and installed in the hook hole. The other hook end of the hook spring is hooked and connected to the surface of the adapter plate. The function of the hook spring is to provide a restoring elastic force and maintain structural stability. Its other hook end is hooked and connected to the surface of the adapter plate to ensure that the adapter plate maintains a preset posture during movement and avoids accidental dislocation.

[0007] Preferably, the adapter plate has an inner groove on its left side. The adapter plate is vertically positioned when the pulley is sliding and inclined when the pulley is suspended. The inner groove on the left side of the adapter plate is used to accommodate the movable shaft and limit its range of motion to ensure the accuracy of the adjustment process. The adapter plate is vertically positioned when the pulley is sliding.

[0008] Preferably, the side through hole of the adapter plate is adapted to the strip through groove of the wheel frame, and the adapter plate, wheel frame and pulley are fixed together by a movable shaft. The side through hole of the adapter plate is adapted to the strip through groove of the wheel frame, allowing the adapter plate to slide along the strip groove in the wheel frame to achieve smooth height adjustment.

[0009] Preferably, the movable pressure plate frame has an extension plate end on the left side, and the extension plate end has an overall trapezoidal structure design. The extension plate end increases the operating area, making it easier for the user to apply force. At the same time, the trapezoidal structure enhances mechanical stability and prevents deformation or damage during operation.

[0010] Preferably, the supporting part includes a disc plate that is connected and fixed to the right side of the top of the wheel frame. A threaded support column is provided at the center of the disc plate, and a rubber column suction cup is provided below the threaded support column. The disc plate serves as a supporting base, distributing the force and improving the load-bearing capacity. The threaded support column is used to connect with the table legs by threads, enabling quick installation and disassembly.

[0011] Preferably, the top of the rubber column suction cup is connected to a plug shaft, and the plug shaft is inserted into the bottom of the threaded support through a slot. The plug-in design facilitates the replacement and maintenance of the rubber column suction cup and adapts to different usage environments and wear conditions.

[0012] Preferably, a rubber plate end is provided on the bottom side of the threaded support column, and the rubber plate end is in contact with the top surface of the rubber column suction cup. A rubber strip end is provided on the outer side of the insertion shaft, and the rubber strip end is in contact with the inner wall of the threaded support column slot. The rubber plate end at the bottom of the threaded support column is in contact with the top surface of the rubber column suction cup. The rubber plate end increases the friction of the contact surface and prevents the rubber column suction cup from rotating or loosening during use.

[0013] This utility model has at least the following beneficial effects: 1. The adjustment part of this device adopts a linkage design of movable pressure plate frame and adapter plate. Users can control the height change of the pulley by simply pressing down or lifting, and easily switch between the pulley sliding state and the support state. The device is simple to operate and responds quickly. No complicated tools are required, which greatly improves the user experience and operating efficiency.

[0014] 2. The rubber column suction cups on the support parts directly contact the ground, and the pulleys are suspended under the control of the adjustment parts, achieving comprehensive support for the table and chair. The rubber column suction cups provide suction and friction, effectively suppressing lateral micro-movements and swaying. Especially in scenarios with greater force, they can significantly reduce shaking and improve stability and comfort during use.

[0015] 3. The support part adopts a replaceable rubber column suction cup and insert shaft design, which allows users to replace the suction cup according to the ground material and wear condition to maintain the best support effect. At the same time, the friction between the insert shaft and the threaded column is enhanced by the rubber strip end and the rubber plate end to ensure a firm connection, prevent loosening, extend the overall service life, and adapt to a variety of use environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the support state of a table and chair pusher wheel proposed in this utility model; Figure 2 This is a three-dimensional structural diagram of the sliding state of a table and chair pusher according to the present utility model. Figure 3 This is a three-dimensional bottom view of the supporting part in a table and chair pusher according to the present invention. Figure 4 This utility model Figure 3 Enlarged structural diagram of A in the middle; Figure 5 This is a schematic diagram of the connection structure between the movable pressure plate frame and the adapter plate in a table and chair pusher according to this utility model; Figure 6 This is a partial disassembly diagram of the adjustment part in a table and chair pusher according to the present invention; Figure 7 This is a partial top-view disassembly diagram of the adjustment part in the table and chair push wheel proposed in this utility model.

[0018] In the picture: 1. Wheel frame; 2. Support components; 21. Plate; 22. Threaded support column; 23. Insert shaft; 24. Rubber column suction cup; 3. Adjustment parts; 31. Movable pressure plate frame; 32. Adapter plate; 33. Movable shaft; 34. Hook rod spring; 4. Pulleys. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Reference Figure 1-7 A type of table and chair pusher includes a wheel frame 1, a support part 2 for support is provided at the bottom right side of the wheel frame 1, a pulley 4 is movably installed at the bottom inside the wheel frame 1, the pulley 4 has two forms: a sliding state and a suspended state, and an adjustment part 3 for adjusting the height of the pulley 4 is movably installed at the top left side of the wheel frame 1. The adjustment part 3 includes a movable pressure plate frame 31 that is movably installed on the left side of the top of the wheel frame 1. The movable pressure plate frame 31 has a triangular structure on its side. The bottom corner of the movable pressure plate frame 31 is movably connected to the wheel frame 1 and the pulley 4 through a movable shaft 33.

[0021] The wheel frame 1 has a hook hole on the right side of the front, and a hook spring 34 is hooked and installed in the hook hole. The other hook end of the hook spring 34 is hooked and connected to the surface of the adapter plate 32.

[0022] The adapter plate 32 has an inner groove on its left side. The adapter plate 32 is vertically set when the pulley 4 is sliding, and it is inclined when the pulley 4 is suspended.

[0023] The side through hole of the adapter plate 32 is adapted to the strip through groove of the wheel frame 1, and the adapter plate 32, the wheel frame 1 and the pulley 4 are fixed together by the insertion of the movable shaft 33.

[0024] The movable pressure plate frame 31 has an extension plate end on the left side, and the extension plate end has an overall trapezoidal structure design.

[0025] The support part 2 includes a disc plate 21 that is connected and fixed to the right side of the top of the wheel frame 1. A threaded support column 22 is provided at the center of the disc plate 21, and a rubber column suction cup 24 is provided below the threaded support column 22.

[0026] The top of the rubber column suction cup 24 is connected to the insertion shaft 23, and the insertion shaft 23 is inserted into the bottom of the threaded support column 22 through the slot.

[0027] A rubber plate end is provided on the bottom side of the threaded support 22, and the rubber plate end is in contact with the top surface of the rubber column suction cup 24. A rubber strip end is provided on the outside of the insertion shaft 23, and the rubber strip end is in contact with and fits against the inner wall of the slot of the threaded support 22.

[0028] The main function of the support part 2 is to provide reliable ground contact in the fixed state and prevent the table and chair from shaking through adsorption and friction mechanisms. The pulley 4 is used to roll in the moving state to realize the easy movement of the table and chair. It has two forms: the sliding state and the suspended state. By switching between the states, it can adapt to different usage needs. The adjustment part 3 is movably installed on the top left of the wheel frame 1 to adjust the height of the pulley 4.

[0029] The hook spring 34 provides a restoring force and maintains structural stability. Its other hook end hooks and engages with the surface of the adapter plate 32, ensuring that the adapter plate 32 maintains a preset posture during movement and preventing accidental dislocation. The adapter plate 32 has an inner groove on its left side, which is used to accommodate the movable shaft 33 and limit its range of motion, ensuring the accuracy of the adjustment process. When the pulley 4 is in the sliding state, the adapter plate 32 is set vertically, at which time the adapter plate 32 transmits a downward force, pushing the pulley 4 to contact the ground. When the pulley 4 is suspended, the adapter plate 32 is set at an angle, at which time the adapter plate 32 provides an upward pulling force, causing the pulley 4 to lift off the ground.

[0030] The side through hole of the adapter plate 32 is adapted to the strip through groove of the wheel frame 1, allowing the adapter plate 32 to slide along the strip groove in the wheel frame 1 to achieve smooth height adjustment. The movable shaft 33, as a key connecting component, not only transmits force but also ensures the coordinated movement between the components, improving the rigidity and durability of the overall structure. The extension plate end expands the operating area, making it easier for users to apply force. At the same time, the trapezoidal structure enhances mechanical stability and prevents deformation or damage during operation.

[0031] The plate 21 serves as a supporting base, distributing stress and improving load-bearing capacity. The threaded support column 22 is used for threaded connection with the table legs, enabling quick installation and disassembly. Its bottom end is designed to connect with the rubber column suction cup 24. The rubber column suction cup 24 is made of high-friction rubber material, generating adsorption and friction on the ground, effectively suppressing the lateral movement and wobbling of the table and chair, especially effective on smooth surfaces. The insertion design of the shaft 23 and the threaded support column 22 facilitates the replacement and maintenance of the rubber column suction cup 24, adapting to different usage environments and wear conditions. The slot of the shaft 23 and the threaded support column 22 fits tightly, ensuring a firm connection.

[0032] The bottom rubber plate end of the threaded support 22 contacts the top surface of the rubber column suction cup 24. The rubber plate end increases the friction of the contact surface, preventing the rubber column suction cup 24 from rotating or loosening during use. The outer rubber strip end of the insertion shaft 23 abuts against the inner wall of the slot of the threaded support 22. The rubber strip end further enhances the frictional resistance between the insertion shaft 23 and the threaded support 22, ensuring the stability and sealing of the connection and avoiding separation due to vibration.

[0033] Working principle: According to Figure 2 As shown, during use, the threaded end of the threaded support 22 is connected to the table leg, and a suitable rubber column suction cup 24 is selected according to the terrain, so that the insertion shaft 23 is inserted into the threaded support 22. In the sliding state, the movable pressure plate frame 31 is pressed down, so that the hinge point at the bottom of the movable pressure plate frame 31 pushes the adapter plate 32. The adapter plate 32 is pressed and placed vertically, driving the adapter plate 32 to cooperate with the movable shaft 33 to push the pulley 4. The movable shaft 33 is controlled to move down in the strip through groove of the wheel frame 1. During the movement of the movable shaft 33, the bottom end of the pulley 4 is controlled to be lower than the bottom end of the rubber column suction cup 24, so that the rubber column suction cup 24 is in a suspended state. Secondly, in the supported state, when pulley 4 has moved to the appropriate position during its rolling motion, according to... Figure 1 As shown, by moving the movable pressure plate frame 31 upward, the movable pressure plate frame 31 rotates around the right rotating shaft as the base point. The hinged end of the bottom of the movable pressure plate frame 31 pulls the adapter plate 32, causing the movable end of the bottom of the adapter plate 32 to rotate around the base point. As the adapter plate 32 tilts and provides an upward force, the adapter plate 32 can move upward through the movable shaft 33. When the movable shaft 33 moves in the strip groove of the wheel frame 1, it can drive the pulley 4 to move upward, so that the bottom horizontal line of the pulley 4 is higher than the bottom of the rubber column suction cup 24. At this time, it can be supported on the ground surface by the rubber column suction cup 24. Finally, according to Figure 3 and Figure 4 As shown, when the rubber column suction cup 24 needs to be assembled, the insert shaft 23 can be inserted into the slot at the bottom of the threaded support 22, so that the rubber plate end at the bottom of the threaded support 22 abuts against the top surface of the rubber column suction cup 24, and the rubber strip end on the surface of the insert shaft 23 can abut against the inner wall of the slot of the threaded support 22, thereby increasing the mating friction and ensuring the mating stability of the insert shaft 23 and the threaded support 22.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A type of table and chair pusher, characterized in that, Includes a wheel frame (1), a support part (2) for support is provided at the bottom right side of the wheel frame (1), a pulley (4) is movably installed at the bottom inside the wheel frame (1), the pulley (4) has two forms: a sliding state and a suspended state, and an adjustment part (3) for adjusting the height of the pulley (4) is movably installed on the left side of the top of the wheel frame (1). The adjustment part (3) includes a movable pressure plate frame (31) that is movably installed on the left side of the top of the wheel frame (1). The movable pressure plate frame (31) has a triangular structure on its side. The bottom corner of the movable pressure plate frame (31) is movably connected to the wheel frame (1) and the pulley (4) through a movable shaft (33).

2. The table and chair pusher according to claim 1, characterized in that, The wheel frame (1) has a hook hole on the right side of the front, and a hook spring (34) is hooked and installed in the hook hole. The other hook end of the hook spring (34) is hooked and connected to the surface of the adapter plate (32).

3. A table and chair pusher according to claim 2, characterized in that, The adapter plate (32) has an inner groove on its left side. The adapter plate (32) is vertically arranged when the pulley (4) is sliding, and it is inclined when the pulley (4) is suspended.

4. A table and chair pusher according to claim 3, characterized in that, The side through hole of the adapter plate (32) is adapted to the strip through groove of the wheel frame (1), and the adapter plate (32), the wheel frame (1) and the pulley (4) are fixed together by a movable shaft (33).

5. A table and chair pusher according to claim 1, characterized in that, The movable pressure plate frame (31) has an extension plate end on the left side, and the extension plate end is designed in a trapezoidal shape.

6. A table and chair pusher according to claim 1, characterized in that, The support part (2) includes a disc plate (21) that is connected and fixed to the right side of the top of the wheel frame (1). A threaded support column (22) is provided at the center of the disc plate (21), and a rubber column suction cup (24) is provided below the threaded support column (22).

7. A table and chair pusher according to claim 6, characterized in that, The top of the rubber column suction cup (24) is connected to the insertion shaft (23), and the insertion shaft (23) is inserted into the bottom of the threaded support (22) through the slot.

8. A table and chair pusher according to claim 7, characterized in that, The bottom side of the threaded support (22) is provided with a rubber plate end, and the rubber plate end is in contact with the top surface of the rubber column suction cup (24). The outer side of the insertion shaft (23) is provided with a rubber strip end, and the rubber strip end is in contact with and fits against the inner wall of the slot of the threaded support (22).

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