A stackable automatic leveling support foot structure

Abstract

A stackable automatic leveling support foot structure is provided. A torsion ring is arranged inside a fixed seat installed under an object. A connecting column of the support foot passes through the fixed seat and extends into a torsion groove of the torsion ring, and there are detents between the connecting column and the torsion groove. When the ground is uneven, the support feet make adaptive rotations respectively through the interaction of the torsion ring and the detents to achieve automatic leveling. At the same time, the support feet are inclined, and the installation heights between some support feet and the fixed seat are different, so that the support feet with lower installation heights can be placed under the higher support feet of adjacent support foot structures to form stacking in the horizontal direction. Through this stackable automatic leveling support foot structure, the object can not only achieve automatic leveling, greatly reducing the difficulty of leveling the object, but also the stacking between multiple support foot structures can be realized, reducing the need for space occupation, and the stacking direction is horizontal, with convenient operation, and it can be applied to objects with larger weights.

Description

Technical Field

[0001] The present invention relates to a support foot installed under objects such as equipment and furniture, and particularly to a support foot structure that can automatically level and be stacked Background Art

[0002] In order to maintain the placement stability of an object and avoid direct contact with the ground, corresponding support feet are generally installed under general equipment or furniture. However, the existing support feet are basically fixed structures, and if the ground is uneven, it is very easy to cause the placed object to tilt; there are also some support feet that can adjust the height now, but the adjustment operations are relatively troublesome, and if the object is heavy, those with weak physical strength will not be able to effectively operate. In addition, in order to reduce the storage space, the support feet of some chairs are designed to be stackable structures, but the existing stackable support foot structures are relatively single and cannot be applied to tables or other equipment with a large weight. Summary of the Invention

[0003] The purpose of the present invention is to provide a support foot structure that is simple in structure, stackable, and capable of automatically leveling, so as to ensure the horizontal placement of an object and reduce the space occupied during storage.

[0004] The stackable automatic leveling support foot structure of the present invention includes a fixed seat fixedly installed under an object. A plurality of support feet are installed circumferentially on the outer wall of the fixed seat. The support feet are inclined and the installation heights of some support feet from the fixed seat are different; a cylindrical and rotatable torsion ring is installed in the fixed seat, and the rotation axis of the torsion ring is perpendicular. Torsion grooves are respectively arranged on the outer wall of the torsion ring facing each support foot; a connecting column is installed on the support foot, and the connecting column passes through the fixed seat and extends into the torsion groove of the torsion ring. A toothed segment is arranged between the connecting column and the torsion groove, and limiting structures for limiting the rotation around the horizontal axis are respectively arranged between the connecting column and the toothed segment and between the toothed segment and the torsion groove.

[0005] The stackable automatic leveling support foot structure described in the present invention has a fixed seat installed below objects such as equipment and furniture, and it is subject to the downward pressure brought by the gravity of the object; the axis of the torsion ring in the fixed seat is perpendicular and can rotate around the axis. At the same time, there are torsion grooves, dial teeth, and connecting columns between the torsion ring and each support foot, so that the support foot can drive the torsion ring to rotate around its radial direction. Therefore, the torsion ring has the freedom to rotate around two mutually perpendicular directions. At the same time, the torsion ring is mutually restricted with the fixed seat, the support foot, and the dial teeth in these two degrees of freedom, so that the acting force can be transmitted between the support feet through the torsion ring. If the ground where the object is placed is a horizontal plane, then each support foot will be evenly stressed, and the torsion ring and each support foot will be in a balanced state due to mutual interaction, and the object will be horizontal; but when the ground is uneven, such as a protrusion at the placement position of a certain support foot, at this time, under the action of the downward pressure, this support foot will rotate around the horizontal axis, and the acting force generated by this rotation will be transmitted to the other support feet through the torsion ring and cause them to rotate accordingly until the reaction force between the support foot and the ground reaches a new balance state, the support foot will be stationary, and the object will also reach the required horizontal state. On the other hand, after the object is placed stably, the lower ends of all the inclined support feet with lower heights will be in contact with the ground as support points, and the higher ends will be installed on the fixed seat; at the same time, since the heights of the higher ends of these support feet are different, the support feet with lower installation heights can be inserted below the support feet with higher installation heights to form an overlap in the height direction. By stacking multiple objects with this kind of support foot structure in sequence with higher and lower support feet, a horizontal stack will be finally formed. Therefore, by using this stackable automatic leveling support foot structure, the object can be automatically leveled, thus ensuring the placement stability of the object and greatly reducing the difficulty of leveling the object; at the same time, multiple support foot structures can also be stacked horizontally, which not only meets the stacking requirements and reduces the need for space occupation, but also can be stacked by horizontal pushing during operation, without the need for the same operation method of lifting and putting down the whole as the traditional stackable chair, greatly improving the operation convenience and being more suitable for heavier objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a schematic structural diagram of the stackable automatic leveling support foot structure.

[0007] Figure 2 is Figure 1 a schematic internal structure diagram of the stackable automatic leveling support foot structure shown.

[0008] Figure 3 and 4 is a schematic diagram of the stacked state of multiple stackable automatic leveling support foot structures.

[0009] Figure 5Yes Figure 1 Explosion structure schematic diagram of the stackable automatic leveling support foot structure shown

[0010] Figure 6 Yes Figure 5 Partial structure schematic diagram of the stackable automatic leveling support foot structure shown

[0011] Figure 7 It is a partial structure schematic diagram of the support foot

[0012] Figure 8 It is a structure schematic diagram of the torsion ring

[0013] Figure 9 It is a structure schematic diagram of the dial tooth Specific implementation mode

[0014] A stackable automatic leveling support foot structure includes a fixed seat 1 fixedly installed under an object. A plurality of support feet 2 are installed on the outer wall of the fixed seat along the circumferential direction. The support feet are inclined and the installation heights of some support feet and the fixed seat are different; a cylindrical and rotatable torsion ring 3 is installed in the fixed seat, the rotation axis of the torsion ring is vertical, and torsion grooves 31 are respectively arranged on the outer wall of the torsion ring facing each support foot; a connecting column 4 is installed on the support foot, the connecting column passes through the fixed seat and extends into the torsion groove of the torsion ring, a dial tooth 5 is arranged between the connecting column and the torsion groove, and limiting structures for limiting the rotation around the horizontal axis are respectively arranged between the connecting column and the dial tooth and between the dial tooth and the torsion groove

[0015] As Figures 1-9 shown, for the stackable automatic leveling support foot structure, a vertically arranged column 9 is installed on the top of the fixed seat 1, and the object 10 to be supported is hinged to the top of the column. If the support foot structure is installed on a table, when multiple tables need to be stacked, first rotate the tabletop to the vertical state around the hinge point, and then stack the support feet of adjacent tables in sequence, so as to avoid the influence of the tables on stacking and ensure the smoothness of stacking

[0016] Four support feet 2 are evenly arranged on the four sides of the fixed seat 1, and the installation heights of two adjacent support feet and the fixed seat are higher than those of the other two support feet; at the same time, four torsion grooves 31 are relatively arranged on the torsion ring 3; the limiting grooves 32 on the two relatively arranged torsion grooves extend along directions that are parallel to each other and have the same orientation, and even the limiting grooves 32 on the adjacent torsion grooves extend along directions that are parallel to each other and have opposite orientations

[0017] As Figures 1-4As shown, the installation heights of the two support feet on the right side of the support foot structure are relatively high, which can be defined as the high feet 21, and the other two support feet with lower heights are defined as the low feet 22. Both the high feet and the low feet are inclined, and their bottoms are located on the same horizontal plane and abut against the ground, thus forming a high-low foot structure. When stacking is required, the low feet of multiple tables are sequentially inserted under the high feet of the previous table, so that multiple tables can be stacked horizontally, effectively reducing space occupancy and making the operation extremely easy and convenient.

[0018] On the other hand, if the ground where the object is placed is a horizontal plane, then each support foot will be evenly stressed, and the torsion ring and each support foot will be in a balanced state due to mutual interaction, and the object will be horizontal; but when the ground is uneven, such as when a protrusion exists at the placement position of a certain support foot, at this time, under the action of the downward pressure, this support foot will rotate around the horizontal axis, and the force generated by this rotation is transmitted to the other support feet through the torsion ring. First, the other support foot opposite to it will immediately rotate accordingly for preliminary balance, and then drive the other two support feet to generate corresponding rotations until all support feet and the ground reaction force reach a new balance state, the support feet will stop, and the object also reaches the required horizontal state, thereby realizing automatic leveling. Through this support foot structure, the object can be conveniently leveled automatically, and the extending directions of adjacent limiting grooves are different, or even opposite, which can better transmit the torque through the torsion ring, thereby improving the effect of automatic leveling.

[0019] For the described stackable and automatically leveling support foot structure, a support column 11 is installed at the bottom of the end of the support foot 2 that abuts against the ground, and on the support foot with a higher installation height between the support column and the fixed seat 1, the length of the support column in the vertical direction is longer than that of the other support columns. The setting of the support column can, on the one hand, improve the stability of the placement, and on the other hand, can raise the height of the lower end of the support foot, making stacking easier to carry out and also improving the overlapping degree of stacking.

[0020] For the described stackable and automatically leveling support foot structure, the limiting structure between the torsion ring 3 and the dial teeth 5 includes a limiting groove 32 extending towards one side of the torsion groove 31, and a limiting tooth 51 extending in the same direction on the dial teeth; and the limiting structure between the dial teeth 5 and the connecting column 4 includes a through hole 52 provided on the dial teeth, a limiting plane 53 is provided on the side of the through hole, and a matching limiting surface 41 is provided at the position where the connecting column passes through the through hole and faces the limiting plane of the through hole; when the support foot rotates due to the unevenness of the ground, it drives the dial teeth to rotate through the limiting surface on the connecting column, and the dial teeth drive the torsion ring to twist through the interaction between the limiting teeth on it and the limiting groove, and finally drive the other support feet through the torsion ring to realize automatic leveling. This kind of limiting structure is extremely simple in structure, but works quickly and stably, and can effectively realize the automatic leveling of the support feet.

[0021] For the described stackable automatic leveling support foot structure, a positioning post 6 is provided on one side of the support foot 2 facing the fixed seat 1. There is also a limit sleeve 7 sleeved outside the positioning post, and both ends of the limit sleeve are abutted against the support foot and the fixed seat respectively; the connecting post 4 extends from the end of the positioning post and passes through the outer wall of the torsion ring 3, and an external thread is provided at the end of the connecting post. The locking nut 8 is arranged inside the torsion ring and is screwed and locked with the end of the connecting post. Through the arrangement of the positioning post and the limit sleeve, the friction surface between the support foot and the fixed seat can be reduced, thereby improving the flexibility of the rotation of the support foot; and using the locking nut to lock the support foot is simple, effective and stable in operation, which is beneficial to simplifying the device structure.

[0022] In addition to the above implementation manner, three or other numbers of support feet can also be installed on the fixed seat, and at the same time, the limiting grooves on the torsion ring are arranged in different ways; the limiting structure can also adopt ways such as a limiting gear, etc., to achieve a certain degree of circumferential rotation and drive.

Claims

1. A stackable automatic leveling support foot structure, characterized in that: It includes a fixed seat (1) fixedly installed below an object. A number of support feet (2) are installed circumferentially on the outer wall of the fixed seat. The support feet are inclined and the installation heights of some of the support feet from the fixed seat are different. A cylindrical and rotatable torsion ring (3) is installed in the fixed seat, and the rotation axis of the torsion ring is vertical. Torsion grooves (31) are respectively arranged on the outer wall of the torsion ring facing each support foot. A connecting column (4) is installed on the support foot. The connecting column passes through the fixed seat and extends into the torsion groove of the torsion ring. A shifting tooth (5) is arranged between the connecting column and the torsion groove. And limiting structures for limiting the rotation around the horizontal axis are respectively arranged between the connecting column and the shifting tooth and between the shifting tooth and the torsion groove. The limiting structure between the torsion ring (3) and the shifting tooth (5) includes a limiting groove (32) extending towards one side of the torsion groove (31), and a limiting tooth (51) extending in the same direction on the shifting tooth. The limiting structure between the shifting tooth (5) and the connecting column (4) includes a through hole (52) arranged on the shifting tooth. A limiting plane (53) is arranged on the side of the through hole. A matching limiting surface (41) is arranged at the position where the connecting column passes through the through hole and faces the limiting plane of the through hole.

2. The stackable automatic leveling support foot structure according to claim 1, characterized in that: A vertically arranged column (9) is installed on the top of the fixed seat (1). The object (10) to be supported is hinged to the top of the column.

3. The stackable automatic leveling support foot structure according to claim 1, characterized in that: Four support feet (2) are evenly arranged on the four sides of the fixed seat (1). The installation heights of two adjacent support feet from the fixed seat are higher than those of the other two support feet.

4. The stackable automatic leveling support foot structure according to claim 3, characterized in that: Four torsion grooves (31) are oppositely arranged on the torsion ring (3). The limiting grooves (32) on the two torsion grooves facing each other extend in parallel and in the same direction.

5. The stackable automatic leveling support foot structure according to claim 3, wherein: Four torsion grooves (31) are oppositely arranged on the torsion ring (3). The limiting grooves (32) on the adjacent torsion grooves extend in parallel and in opposite directions respectively.

6. The stackable automatic leveling support foot structure according to any one of claims 1-5, characterized in that: At the bottom of the end of the support foot (2) in contact with the ground, a support column (11) is installed. And on the support foot with a higher installation height from the fixed seat (1), the length of the support column in the vertical direction is longer than that of the other support columns.

7. The stackable automatic leveling support foot structure according to any one of claims 1-5, characterized in that: A positioning column (6) is arranged on the side of the support foot (2) facing the fixed seat (1). There is also a limiting sleeve (7) sleeved outside the positioning column. The two ends of the limiting sleeve are respectively in contact with the support foot and the fixed seat. The connecting column (4) extends from the end of the positioning column and passes through the outer wall of the torsion ring (3). And an external thread is arranged at the end of the connecting column. A locking nut (8) is arranged in the torsion ring and is screwed and locked with the end of the connecting column.

Images