CN220859748U - Split return shaft - Google Patents

Abstract

The utility model discloses a split return shaft which comprises a return shaft and supporting legs, wherein the return shaft comprises a bearing and a shell, the shell comprises an upper shell, a lower shell and a first fixing structure, and the upper shell and the lower shell are fixed by the first fixing structure. From this, split type return axle that this time proposed can dismantle, and the maintenance of being convenient for avoids extravagant when inner structure breaks down.

Description

Split return shaft

Technical Field

The utility model relates to the field of furniture, in particular to a split return shaft.

Background

Swivel chairs with rebound function are visible everywhere in offices, schools, bars, families, etc. The swivel chair not only can rotate, but also can sink to provide buffering when in use, and can rebound automatically after lifting. In the prior art, the shell of the return shaft of the swivel chair is usually integrally formed, two ends of the shell are sealed by bearings, and when the inside of the return shaft fails, the shell can only be integrally replaced, so that maintenance cannot be performed, and waste is caused. Therefore, improvements in the art are needed.

Disclosure of utility model

The utility model mainly aims to provide a split return shaft, which aims to solve the problems that the current return shaft cannot be opened and is inconvenient to maintain.

In order to achieve the above purpose, the split return shaft provided by the utility model is used for realizing the rotation and rebound of furniture and comprises a return shaft and supporting legs, wherein the return shaft comprises a bearing and a shell, the bearing is arranged in the shell, and a rotating part and a return part are arranged between the bearing and the shell; the rotating part is used for rotating the bearing relative to the shell, and the return part is used for rebounding the bearing relative to the shell; the shell includes epitheca, inferior valve and first fixed knot constructs, and first fixed knot constructs including first screw, first screw and first through-hole, and first screw is located the epitheca bottom, and first through-hole runs through the inferior valve, and first screw passes first through-hole and gets into first screw and fix epitheca and inferior valve. The supporting leg comprises a mounting surface and is used for being mounted and fixed with the return shaft.

Preferably, the device further comprises a second fixing structure, wherein the return shaft and the mounting surface are fixed through the second fixing structure; the second fixing structure comprises a second screw hole, a second screw and a second through hole; the second screw hole is formed in the outer side wall of the upper shell and the bottom surface of the lower shell; the second through hole is formed in the mounting surface, and the second screw penetrates through the second through hole and enters the second screw hole to fix the supporting leg on the return shaft.

Preferably, the mounting surface is L-shaped and comprises a vertical surface and a horizontal surface which are mutually perpendicular, the vertical surface is abutted with the outer side wall of the upper shell, and the horizontal surface is abutted with the bottom surface of the lower shell.

Optionally, a boss is arranged on the outer side of the shell, a chute is arranged on the inner side of the mounting surface, and the shape of the chute is matched with that of the boss; when the mounting surface slides into the boss through the chute, the boss is accommodated in the chute.

Preferably, the rotating part comprises a runner assembly, a sleeve assembly and a rotary table; the rotating wheel assembly is fixed on the sleeve assembly; the rotary table is positioned in the shell.

Preferably, the sleeve assembly comprises an inner cylinder and an outer cylinder, and a first limiting block is arranged on the inner cylinder; the outer cylinder is provided with a first limit groove matched with the first limit block.

Preferably, the wheel assembly comprises a rotatable wheel, a third screw and a screw sleeve; the first limiting block is provided with a third through hole; a third screw penetrates through the third through hole to fix the rotating wheel on one side of the inner cylinder; the screw sleeve secures the third screw to the inner barrel from the other side of the inner barrel.

Preferably, the inner wall of the shell is provided with a second limiting block; the outer wall of the rotary table is provided with a second limit groove; the second limiting block is matched with the second limiting groove, so that the rotary table is relatively fixed in the shell.

Preferably, the return portion is provided as a spring; the spring is arranged in the inner cylinder.

Preferably, the device also comprises a clamping spring; the bottom of the outer cylinder is provided with a third limit groove; the clamp spring is used for being clamped into the third limiting groove to limit the outer barrel.

The split return shaft comprises a return shaft and supporting legs, wherein the return shaft comprises a bearing and a shell, the shell comprises an upper shell, a lower shell and a first fixing structure, and the upper shell and the lower shell are fixed by the first fixing structure. From this, this time can dismantle by split type return axle that proposes, be convenient for maintain when inner structure breaks down, avoid extravagant.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is an exploded view of one embodiment of the present utility model;

Fig. 3 is an exploded view of a return shaft portion according to an embodiment of the present utility model.

Reference numerals illustrate:

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Swivel chairs with rebound function are visible everywhere in offices, schools, bars, families, etc. The swivel chair not only can rotate, but also can sink to provide buffering when in use, and can rebound automatically after lifting. In the prior art, the shell of the return shaft of the swivel chair is usually integrally formed, two ends of the shell are sealed by bearings, and when the inside of the return shaft fails, the shell can only be integrally replaced, so that maintenance cannot be performed, and waste is caused. Therefore, improvements in the art are needed.

Therefore, in order to solve the above-mentioned problem, the present utility model proposes a split type return shaft, including a return shaft and a support leg, the return shaft including a bearing and a housing, wherein the housing includes an upper case, a lower case, and a first fixing structure, the upper case and the lower case being fixed by the first fixing structure. From this, this time can dismantle by split type return axle that proposes, be convenient for maintain when inner structure breaks down, avoid extravagant.

For ease of understanding, the following detailed description of embodiments of the application is provided with reference to the accompanying drawings.

In one embodiment of the present utility model, referring to fig. 1 to 3, a return shaft 100 structure provided by the embodiment of the present utility model is used for realizing rotation and rebound of furniture, and includes a return shaft 100 and supporting legs, the return shaft 100 includes a bearing 110 and a housing 120, wherein the bearing 110 is disposed inside the housing 120, and a rotation portion and a return portion are disposed between the bearing 110 and the housing 120; the rotating part is used for rotating the bearing 110 relative to the shell 120, and the return part is used for rebounding the bearing 110 relative to the shell 120; the outer case 120 includes an upper case 121, a lower case 122, and a first fixing structure including a first screw hole 123, a first screw 124, and a first through hole 144, the first screw hole 123 is provided at the bottom of the upper case 121, the first through hole 144 penetrates the lower case 122, and the first screw 124 penetrates the first through hole 144 to enter the first screw hole 123 to fix the upper case 121 and the lower case 122. The support leg 200 includes a mounting surface 210 for mounting and securing with the return shaft 100.

In the present embodiment, the return shaft 100 and the support legs 200 are included, wherein the return shaft 100 includes the bearing 110 and the housing 120, and specifically, the bearing 110 is pressed into both ends of the housing 120, respectively, and in order to secure the stability of the bearing 110, the outer diameter of the bearing 110 is slightly larger than the inner diameter of the housing 120. In the space formed by the two bearings 110 and the housing 120, a rotating portion and a return portion are provided. The rotating part is used for rotating the bearing 110 relative to the shell 120, namely, is used for realizing the rotating function of the seat; the return portion is used for rebound of the bearing 110 relative to the housing 120, i.e. to perform the rebound function of the seat. The housing 120 further includes an upper case 121 and a lower case 122, and is coupled and fixed by a first fixing structure. Thus, the upper and lower cases 121 and 122 can be disassembled, and the rotating and returning portions provided in the housing 120 can be maintained if they fail.

In one embodiment of the present utility model, the second fixing structure is further included, and the return shaft 100 and the mounting surface 210 are fixed by the second fixing structure; the second fixing structure includes a second screw hole 125, a second screw 126, and a second through hole 145; the second screw hole 125 is formed on the outer side wall of the upper case 121 and the bottom surface of the lower case 122; the second through hole 145 is formed in the mounting surface 210, and the second screw 126 passes through the second through hole 145 and enters the second screw hole 125 to fix the support leg to the return shaft 100.

In this embodiment, the second fixing structure is used for fixing the return shaft 100 and the supporting leg together, which is different from the traditional welding connection, and the supporting leg 200 can be conveniently detached by this connection mode, so that not only the damaged supporting leg 200 can be replaced at any time, but also the supporting legs 200 with different specifications can be replaced at any time so as to adapt to different application scenes.

Further, the mounting surface 210 has an L-shape and includes a vertical surface 211 and a horizontal surface 212, which are perpendicular to each other, the vertical surface 211 being in contact with the outer side wall of the upper case 121, and the horizontal surface 212 being in contact with the bottom surface of the lower case 122. Thus, the mounting surface 210 is fixed to the housing 120 in both the horizontal and vertical directions, providing support in both the horizontal and vertical directions, making the mounting more stable.

In one embodiment of the present utility model, the outer side of the housing 120 is provided with a boss, the inner side of the mounting surface 210 is provided with a chute, and the shape of the chute is adapted to the shape of the boss; when the mounting surface 210 slides into the boss through the chute, the boss is received in the chute.

In this embodiment, a boss is disposed on the outer side of the housing 120, and a chute is disposed on the inner side of the mounting surface 210, so that the boss can be slid into the chute to be positioned, and then is fixed by a second fixing structure, thereby simplifying the mounting process and realizing rapid mounting.

It should be noted that, the split return shaft 100 provided by the present utility model has an automatic return function, specifically, has a function of rotating return and horizontal rebound, and the embodiment of the present utility model is not limited to a specific implementation, and the following provides an embodiment for easy understanding.

In one embodiment of the present utility model, the rotating part includes a wheel assembly, a sleeve assembly, and a rotary table 143; the rotating wheel assembly is fixed on the sleeve assembly; the rotary table 143 is located within the housing 120.

In this embodiment, since the upper end of the sleeve assembly is connected to the seat, the sleeve assembly rotates with the seat, so the wheel assembly needs to be fixed to the sleeve assembly for rotation therewith when the sleeve assembly rotates. The rotary table 143 is provided as a high-low member, i.e., one end is high and the other end is low and both ends are connected by gentle slopes, providing a track for rotation of the wheel assembly. In the initial position, the wheel assembly is located at the lowest position of the rotary table 143 due to the rebound effect of the seat. In the use of the seat, along with the rotation of the body of a user, the seat is driven to rotate, the sleeve assembly and the runner assembly are driven to rotate, the runner assembly moves on a ramp provided by the rotating table 143, namely, the runner assembly is randomly stopped at any position from the lowest position of the rotating table 143, the elastic piece in the seat is always stressed because the stopping position is always higher than the lowest position, when the user stands up, the elastic piece releases the resilience force, the runner assembly can be driven to recover to the initial position of the lowest position, and the seat also recovers to the initial position.

In one embodiment of the present utility model, the sleeve assembly includes an inner cylinder 131 and an outer cylinder 135, wherein a first limiting block 132 is provided on the inner cylinder 131; the outer cylinder 135 is provided with a first limiting groove 136 matched with the first limiting block 132.

In this embodiment, the outer cylinder 135 is provided with a sealed upper end and an open lower end, the inner cylinder 131 is provided with a hollow cylinder, the inner cylinder 131 is provided with a first limiting block 132, and the outer cylinder 135 is provided with a first limiting groove 136 adapted to the first limiting block 132, so that the inner cylinder 131 and the outer cylinder 135 can be relatively fixed, and the rotating wheel assembly is driven to rotate on the rotating table 143 along with the rotation of the seat.

In one embodiment of the utility model, the wheel assembly includes a rotatable wheel 137, a third screw 134, and a screw grommet 138; the first limiting block 132 is provided with a third through hole 133; the third screw 134 passes through the third through hole 133 to fix the rotating wheel 137 to one side of the inner cylinder 131; a screw grommet 138 secures the third screw 134 to the inner barrel 131 from the other side of the inner barrel 131.

In this embodiment, the rotating assembly consists of a rotating wheel 137, a third screw 134 and a screw grommet 138. A third through hole 133 is horizontally formed in the first limiting block 132, and is used for allowing a third screw 134 and a screw sleeve 138 to pass through. The third screw 134 passes through the third through hole 133 to fix the rotating wheel 137 at one side of the inner cylinder 131, and enters the screw socket 138 penetrating into the third through hole 133 from the other side to be fixed. Thus, the third screw 134 may be threadably coupled to the screw socket 138, which may reduce direct friction with the sleeve assembly and extend the service life.

In one embodiment of the present utility model, the inner wall of the housing 120 is provided with a second limiting block 140; the outer wall of the rotary table 143 is provided with a second limit groove 141; the second limiting block 140 cooperates with the second limiting groove 141 to fix the rotary table 143 in the housing 120 relatively.

In the present embodiment, in order to fix the rotary table 143 to the housing 120, a second stopper 140 is provided on the inner wall of the housing 120; the outer wall of the rotary table 143 is provided with a second limiting groove 141, so that the second limiting block 140 and the second limiting groove 141 cooperate with each other, and the rotary table 143 and the housing 120 are kept relatively fixed during the rotation of the seat.

In one embodiment of the present utility model, the return portion is preferably a spring 300, and is disposed in the inner cylinder 131, wherein the lower end of the spring 300 abuts against the rotating member, and the upper end abuts against the outer cylinder 135.

Further, to make the split return axle 100 more stable, one embodiment of the present utility model further includes a snap spring 142; the bottom of the outer cylinder 135 is provided with a third limit groove 139; the clamp spring 142 is used for being clamped into the third limiting groove 139 to limit the outer cylinder 135. Therefore, after the parts are sequentially installed, the clamp spring 142 is clamped into the third limiting groove 139, so that the whole split return shaft 100 is more stable.

In summary, the split return shaft provided by the present disclosure includes the return shaft 100 and the supporting leg 200, where the return shaft 100 includes the bearing 110 and the housing 120, and the housing 120 includes the upper shell 121, the lower shell 122 and the first fixing structure, and the upper shell 121 and the lower shell 122 are fixed by the first fixing structure. From this, this time can dismantle by split type return axle that proposes, be convenient for maintain when inner structure breaks down, avoid extravagant.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. The split return shaft is used for realizing the rotation and rebound of furniture and is characterized by comprising a return shaft and supporting legs, wherein the return shaft comprises a bearing and a shell,

The bearing is arranged in the shell, and a rotating part and a return part are arranged between the bearing and the shell; the rotating part is used for rotating the bearing relative to the shell, and the return part is used for rebounding the bearing relative to the shell;

The shell comprises an upper shell, a lower shell and a first fixing structure, wherein the first fixing structure comprises a first screw hole, a first screw and a first through hole, the first screw hole is formed in the bottom of the upper shell, the first through hole penetrates through the lower shell, and the first screw penetrates through the first through hole to enter the first screw hole to fix the upper shell and the lower shell;

the supporting leg comprises a mounting surface and is used for being mounted and fixed with the return shaft.

2. The split return axle of claim 1 further comprising a second securing structure, said return axle secured to said mounting surface by said second securing structure; the second fixing structure comprises a second screw hole, a second screw and a second through hole; wherein,

The second screw hole is formed in the outer side wall of the upper shell and the bottom surface of the lower shell; the second through hole is formed in the mounting surface, and the second screw penetrates through the second through hole to enter the second screw hole to fix the supporting leg to the return shaft.

3. The split return axle of claim 2 wherein said mounting surface is L-shaped and includes a vertical surface and a horizontal surface that are perpendicular to each other, said vertical surface abutting an outer sidewall of said upper housing and said horizontal surface abutting a bottom surface of said lower housing.

4. The split return axle of claim 1 wherein a boss is provided on the outside of said housing, a chute is provided on the inside of said mounting surface, and the shape of said chute is adapted to the shape of said boss;

When the mounting surface slides into the boss through the sliding groove, the boss is accommodated in the sliding groove.

5. The split return axle of claim 1 wherein said rotating portion includes a wheel assembly, a sleeve assembly and a rotary table; the runner assembly is fixed on the sleeve assembly; the rotary table is located in the housing.

6. The split return axle of claim 5 wherein said sleeve assembly includes an inner barrel and an outer barrel, said inner barrel having a first stopper thereon; the outer cylinder is provided with a first limiting groove matched with the first limiting block.

7. The split return axle of claim 6 wherein said wheel assembly includes a rotatable wheel, a third screw and a screw sleeve; the first limiting block is provided with a third through hole; the third screw penetrates through the third through hole to fix the rotating wheel on one side of the inner cylinder; the screw sleeve secures the third screw to the inner barrel from the other side of the inner barrel.

8. The split return axle of claim 6 wherein said housing inner wall is provided with a second stop block; the outer wall of the rotary table is provided with a second limit groove; the second limiting block is matched with the second limiting groove, so that the rotary table is relatively fixed in the shell.

9. The split return axle of claim 6 wherein said return portion is provided as a spring; the spring is arranged in the inner cylinder.

10. The split return axle of claim 6 further comprising a snap spring; a third limit groove is formed in the bottom of the outer cylinder; the clamp spring is used for being clamped into the third limiting groove to limit the outer barrel.