Rotating structure and child swivel chair

Abstract

The utility model discloses a rotating structure and a child swivel chair, which comprise a first connecting piece, a second connecting piece and a rotating component arranged between the first connecting piece and the second connecting piece, and at least the first connecting piece is provided with an annular groove extending along the circumferential direction; the rotating assembly comprises a plurality of balls and a plurality of retainers arranged between the adjacent balls; the ball body and the retaining piece are both located in the groove, and when the first connecting piece and the second connecting piece are installed in place, the ball body abuts against the bottom of the groove and the second connecting piece. According to the scheme, a better supporting effect can be provided under the condition of low cost, and rotation is smooth.

Description

Technical Field

[0001] The utility model relates to a swivel chair, in particular to a children's swivel chair. Background Art

[0002] The swivel chair itself is used for children to sit down, and the rotating structure allows the seat part to rotate to adjust the current direction of the child. The traditional rotating structure uses bearings for installation, but the bearings themselves are made of metal, which is relatively expensive. In addition, the children's swivel chair has certain entertainment attributes. When the table top of the seat part is large, if the size of the bearing is not large enough, the supporting area will be insufficient, which will easily affect the service life. Therefore, a low-cost and better supporting rotating structure is also needed. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rotating mechanism and a children's swivel chair, which can provide better support at a low cost and make the rotation smooth.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotating structure, characterized in that it includes a first connecting member, a second connecting member, and a rotating assembly arranged between the first connecting member and the second connecting member, at least the first connecting member is provided with an annular groove extending along the circumferential direction, and the rotating assembly includes a plurality of spheres and a plurality of retaining members arranged between adjacent spheres; the spheres and retaining members are both located in the grooves, and when the first connecting member and the second connecting member are installed in place, the spheres abut against the bottom of the groove and the second connecting member.

[0005] As a further improvement of the present invention, the retaining member includes a connecting rod and a resisting member provided at both ends of the connecting rod, the resisting member is used to cooperate with the ball to abut, and the size of the resisting member is larger than the size of the end of the connecting rod.

[0006] As a further improvement of the present invention, a reinforcing rib is provided between the abutment member and the connecting rod, and the reinforcing rib is fixedly connected to both the abutment member and the connecting rod.

[0007] As a further improvement of the present invention, a downwardly recessed portion is provided on one side of the connecting rod corresponding to the upper side.

[0008] As a further improvement of the present invention, the center of gravity of the connecting rod is moved downward through the recessed portion, and the edge of the interference piece is round.

[0009] As a further improvement of the present invention, the surface of the resisting member for contacting the sphere is a first inclined surface, and the upper side of the surface is inclined toward the recessed portion to form the first inclined surface.

[0010] As a further improvement of the present invention, a gap is formed between the connecting rod and the bottom of the groove through the interference piece.

[0011] As a further improvement of the present invention, the connecting rod is elastic.

[0012] As a further improvement of the present invention, the connecting rod is configured to gradually expand from the recessed portion toward both ends.

[0013] A children's swivel chair includes a base, a support surface, and a rotating structure installed between the base and the support surface. The rotating structure adopts any of the rotating structures described above, the first connecting member is connected to the base, and the second connecting member has a support surface.

[0014] As a further improvement of the present invention, a second inclined surface is provided on the base at one end corresponding to the first connecting member, and a third inclined surface is provided at the position of the first connecting member corresponding to the base. The first connecting member and the base are coordinated by the second inclined surface and the third inclined surface to adjust the inclination state of the upper end surface of the first connecting member to adjust the inclination state of the supporting surface.

[0015] As a further improvement of the present invention, a limiting protrusion is provided on the second inclined surface, and two limiting baffles are provided on the first connecting member for cooperating with the limiting protrusion for limiting. The first connecting member and the base are rotatably connected, and the limiting protrusion and the two baffles cooperate to form a limit on the rotation range.

[0016] As a further improvement of the present invention, a raceway is provided on the second connecting member at a position corresponding to the groove. When the first connecting member and the second connecting member are assembled in place, the positions of the groove and the raceway correspond to each other, and the ball moves in the space formed by the groove and the raceway.

[0017] The beneficial effect of the present invention is that the groove is convenient for filling the ball and the retaining member, and the ball and the retaining member can provide support and reduce friction. In this structure, the ball and the retaining member can be made of plastic material, and there is no need to purchase bearings, which reduces weight and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the utility model in an assembled state;

[0019] Figure 2 This is a top perspective view of the explosion state of the utility model;

[0020] Figure 3 This is a bottom-up perspective view of the utility model in the exploded state;

[0021] Figure 4 It is a longitudinal cross-sectional schematic diagram of the utility model;

[0022] Figure 5 This is a three-dimensional diagram of the rotating assembly of the present utility model;

[0023] Figure 6 It is a side view of the rotating assembly of the present invention.

[0024] Figure numbers: 1. First connecting member; 11. Groove; 12. Third inclined surface; 13. Limit baffle; 2. Second connecting member; 21. Raceway; 3. Rotating assembly; 31. Ball; 32. Retaining member; 321. Connecting rod; 322. Resistance member; 323. Reinforcing rib; 324. Recessed portion; 325. First inclined surface; 4. Base; 41. Second inclined surface; 42. Limiting protrusion; 5. Support surface. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0026] Reference Figure 1-6 As shown,

[0027] A rotating structure includes a first connecting member 1, a second connecting member 2, and a rotating assembly 3 arranged between the first connecting member 1 and the second connecting member 2, wherein at least the first connecting member 1 is provided with an annular groove 11 extending along the circumferential direction, and the rotating assembly 3 includes a plurality of spheres 31 and a plurality of retaining members 32 arranged between adjacent spheres 31; the spheres 31 and the retaining members 32 are both located in the groove 11, and when the first connecting member 1 and the second connecting member 2 are installed in place, the spheres 31 abut against the bottom of the groove 11 and the second connecting member 2.

[0028] The rotating structure can be used not only on children's swivel chairs, but also on adult swivel chairs and other structures where upper and lower parts need to cooperate to rotate.

[0029] During installation, the groove 11 of the first connecting member 1 is first oriented upward to facilitate the insertion of the ball 31 and the retaining member 32 into the groove 11. By arranging the ball 31 and the retaining member 32 alternately, they are regularly installed in the groove 11. The groove 11 is annular, allowing the ball 31 and the retaining member 32 to move along the ring within the groove 11. The ball 31 provides a rotational connection between the first connecting member 1 and the second connecting member 2. The number of grooves 11 can be one or two. If there are two, one is provided on each of the first connecting member 1 and the second connecting member 2, and the positions correspond to each other, which can be used to cooperate with the installation of the ball 31. If there is only one, it can be installed only on the first connecting member 1, while the second connecting member 2 is rotationally connected by a shaft to prevent radial movement. The ball 31 and the retaining member 32 provide support and reduce friction. In this structure, the ball 31 and the retaining member 32 can both be made of plastic, without the need to purchase bearings, which reduces weight and reduces cost.

[0030] In a preferred solution, the retaining member 32 includes a connecting rod 321 and abutting members 322 provided at both ends of the connecting rod 321 , and the abutting members 322 are used to cooperate with the sphere 31 to abut.

[0031] The abutment 322 is used to cooperate with the ball 31 to make contact. Increasing the area can make the contact of the ball 31 more stable. There can be a certain gap between the abutment 322 and the ball 31 in the assembled state, and when rotating, the ball 31 will abut against the abutment 322 as it rolls.

[0032] In order to increase the strength between the connecting rod 321 and the abutment 322, a reinforcing rib 323 is provided between the abutment 322 and the connecting rod 321, and the reinforcing rib 323 is fixedly connected to both the abutment 322 and the connecting rod 321. The reinforcing rib 323 can increase the strength in the contact direction with the ball 31 and increase the service life.

[0033] In an optional setting, a downwardly recessed portion 324 is provided on the upper side of the connecting rod 321 .

[0034] The setting of the recessed portion 324 can reduce the amount of material used on the one hand, and can adjust the position of the center of gravity on the other hand. In the preferred solution, the center of gravity of the connecting rod 321 moves downward through the recessed portion 324, and the edge of the interference member 322 is round. Based on this solution, when the retaining member 32 is filled into the groove 11, the circular edge of the interference member 322 will automatically flip over under the action of the center of gravity, so that the groove 11 part faces upward, and the installation is more uniform. Generally speaking, the retaining member 32 is made of plastic and has a certain elastic force. The setting of the groove 11 can locally reduce the strength and thus provide a certain elastic force. In addition, the surface of the interference member 322 used to contact the sphere 31 is a first inclined surface 325, and the upper part of the surface is inclined toward the recessed portion 324 to form the first inclined surface 325. The presence of the first bevel 325 facilitates the installation of the sphere 31. During installation, all the retaining members 32 are first inserted into the groove 11. The center of gravity and the circular edge of the abutment member 322 are then automatically flipped. At this point, the bevels are facing upwards, and the bevels on the two adjacent retaining members 32 cooperate to form an opening. The sphere 31 is then pressed into the opening. The two first bevels 325 cooperate with the pressing process of the sphere 31 to push the two retaining members outwards, allowing the sphere 31 to be inserted. The sphere 31 can be installed quickly without having to distinguish between the retaining members and the sphere 31 and inserting them one by one, which makes the installation more efficient. It is even possible to divide the work, and on the assembly line, the retaining members can be filled first, and the next staff member can then fill in the sphere 31. This makes the distribution clearer and more efficient.

[0035] In addition, the connecting rod 321 forms a gap with the bottom of the groove 11 through the abutment 322. The existence of this gap can reduce the contact between the connecting rod 321 and the groove 11, reduce friction by reducing the contact area, and make the rotation smoother.

[0036] In a specific configuration, the connecting rod 321 is configured to gradually expand from the recessed portion 324 toward both ends. This configuration can reduce the amount of material used and ensure the fit between the first inclined surface 325 and the sphere 31. At the same time, due to the presence of the reinforcing ribs 323, the strength can also be guaranteed.

[0037] The above describes the rotating structure in detail. The following describes its application in a children's swivel chair in detail.

[0038] A children's swivel chair includes a base 4, a support surface 5, and a rotating structure installed between the base 4 and the support surface 5. The rotating structure adopts the rotating structure as described above, the first connecting member 1 is connected to the base 4, and the second connecting member 2 has a support surface 5.

[0039] The support surface 5 is used for children to sit and contact, and can be an integral structure with the second connecting member 2, or can be separately installed on the second connecting member 2.

[0040] Preferably, a second inclined surface 41 is provided on the end of the base 4 corresponding to the first connector 1, and a third inclined surface 12 is provided on the first connector 1 at a position corresponding to the base 4. The second inclined surface 41 and the third inclined surface 12 cooperate to adjust the inclination of the upper end surface of the first connector 1 between the first connector 1 and the base 4, thereby adjusting the inclination of the support surface 5. The third inclined surface 12 is not specifically a solid surface, but rather, as shown in the figure, is an active surface formed by the bottom of multiple ribs. This active surface is not a directly complete solid surface, but rather an active surface formed by the cooperation of multiple ribs and the first inclined surface 325.

[0041] During use, the first connecting member 1 can be rotated relative to the base 4. At this time, the second inclined surface 41 and the third inclined surface 12 will cooperate. This cooperation will specifically act on the upper end surface of the first connecting member 1. The upper end surface of the first connecting member 1 will adjust its tilt state as the first connecting member 1 rotates. Different entertainment play methods can be achieved by adjusting the tilt state. For example, the second inclined surface 41 and the third inclined surface 12 cooperate to make the upper end surface of the first connecting member 1 horizontal. At this time, the second connecting member 2 installed on the first connecting member 1 is also horizontal. At this time, a child sitting on it can rotate without shaking. As the first connecting member 1 rotates, the cooperation of the second inclined surface 41 and the third inclined surface 12 will cause the upper end surface of the first connecting member 1 to tilt. As the tilt degree increases, different degrees of shaking will occur when the second connecting member 2 rotates, thereby providing different degrees of shaking play methods and adding more fun.

[0042] As an adjustment limit, it is convenient for users to adjust within a certain range and avoid the problem of poor control of the adjustment degree. A limiting protrusion 42 is provided on the second inclined surface 41, and two limiting baffles 13 for cooperating with the limiting protrusion 42 for limiting are provided on the first connecting member 1. The first connecting member 1 is rotatably connected to the base 4, and the rotation range is limited by the limiting protrusion 42 and the two baffles.

[0043] The limiting protrusion 42 cooperates with the baffle to allow the first connecting member 1 to rotate within a range, preventing the first connecting member 1 from rotating freely at a 360° angle, resulting in the user being unable to adjust to the two points with the maximum and minimum shaking amplitudes. By setting the limiting baffle 13 in conjunction with the limiting protrusion 42, the two limiting baffles 13 correspond to the two points with the maximum and minimum shaking degrees respectively, making it more convenient for users to adjust.

[0044] As a further improvement to improve the rotation effect, a raceway 21 is provided on the second connecting member 2 at a position corresponding to the groove 11. When the first connecting member 1 and the second connecting member 2 are assembled in place, the groove 11 corresponds to the position of the raceway 21, and the ball 31 moves in the space formed by the groove 11 and the raceway 21.

[0045] The combination of the raceway 21 and the groove 11 allows for more stable rolling of the ball 31 and provides a better position-limiting effect. The shapes of the raceway 21 and the groove 11 can adapt to the ball 31, and their cross-sections can both be arc-shaped. Of course, the bottoms of the raceway 21 and the groove 11 can contact the ball 31, while a certain gap can be maintained on the sides to provide slight movement space.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A rotating structure, characterized in that: The invention comprises a first connecting member, a second connecting member, and a rotating assembly arranged between the first connecting member and the second connecting member, wherein at least the first connecting member is provided with an annular groove extending along the circumferential direction, and the rotating assembly comprises a plurality of spheres and a plurality of retaining members arranged between adjacent spheres; the spheres and retaining members are both located in the grooves, and when the first connecting member and the second connecting member are installed in place, the spheres abut against the bottom of the grooves and the second connecting member.

2. The rotating structure according to claim 1, characterized in that: The retaining member includes a connecting rod and a resisting member arranged at both ends of the connecting rod. The resisting member is used to cooperate with the ball to abut, and the size of the resisting member is larger than the size of the end of the connecting rod.

3. The rotating structure according to claim 2, characterized in that: A reinforcing rib is provided between the abutment member and the connecting rod, and the reinforcing rib is fixedly connected to both the abutment member and the connecting rod.

4. The rotating structure according to claim 2, characterized in that: A downwardly recessed portion is provided on one side of the connecting rod corresponding to the upper side.

5. The rotating structure according to claim 4, characterized in that: The center of gravity of the connecting rod moves downward through the recessed portion, and the edge of the abutment is circular.

6. The rotating structure according to claim 4 or 5, characterized in that: The surface of the resisting member for contacting the sphere is a first inclined surface, and the upper side of the surface is inclined toward the recessed portion to form the first inclined surface.

7. The rotating structure according to any one of claims 2 to 5, characterized in that: The connecting rod forms a gap with the groove bottom of the groove through the interference piece.

8. The rotating structure according to claim 7, characterized in that: The connecting rod is elastic.

9. The rotating structure according to claim 8, characterized in that: The connecting rod is gradually expanded from the concave portion toward both ends.

10. A children's swivel chair, comprising a base, a support surface, and a swivel structure installed between the base and the support surface, characterized in that: The rotating structure adopts the rotating structure according to any one of claims 1 to 9, wherein the first connecting member is connected to the base, and the second connecting member has a supporting surface.

11. The children's swivel chair according to claim 10, characterized in that: A second inclined surface is provided on the base at one end corresponding to the first connecting member, and a third inclined surface is provided at a position of the first connecting member corresponding to the base. The first connecting member and the base are coordinated by the second inclined surface and the third inclined surface to adjust the inclination state of the upper end surface of the first connecting member to adjust the inclination state of the supporting surface.

12. The children's swivel chair according to claim 11, characterized in that: A limiting protrusion is provided on the second inclined surface, and two limiting baffles are provided on the first connecting member for cooperating with the limiting protrusion for limiting. The first connecting member and the base are rotatably connected, and the limiting protrusion and the two baffles cooperate to form a rotation range limit.

13. The children's swivel chair according to claim 11 or 12, characterized in that: A rolling track is provided on the second connecting member at a position corresponding to the groove. When the first connecting member and the second connecting member are assembled in place, the positions of the groove and the rolling track correspond to each other, and the ball moves in the space formed by the groove and the rolling track.

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