Supporting seat for swivel chair

Abstract

According to the supporting seat for the swivel chair, a bearing mounting pipe is arranged in the middle of a base, a mounting hole is formed in the bearing mounting pipe, a locking hole is further formed in the side wall of the bearing mounting pipe in a penetrating mode, and a rotating shaft is arranged in the mounting hole; a plurality of locking grooves are formed in one section of shaft body, corresponding to the to-be-locked hole, of the rotating shaft, fasteners can be assembled in the locking holes to abut against the locking grooves, rotation of the rotating shaft is stopped, and after the fasteners are detached, the rotating shaft recovers free rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially relates to a support seat for swivel chair. BACKGROUND

[0002] The base of the swivel chair mainly utilizes the cooperation of simple shaft and hole to realize the rotating function, when external force acts on the chair to make it rotate around the shaft, the friction between the shaft and the hole is generated, and the friction will affect the smooth degree of rotation, in order to reduce the friction, people will smear grease and other lubricants between the shaft and the hole, so that the base of the swivel chair can rotate flexibly and stably.

[0003] Chinese patent CN220192559U discloses a base of a swivel chair, which comprises an upper sleeve, a lower sleeve and a support frame, the outer side wall of the upper sleeve is provided with two upper support feet symmetrically arranged, the outer side wall of the lower sleeve is provided with two lower support feet symmetrically arranged, the upper sleeve and the lower sleeve are inserted and circumferentially positioned, and each upper support foot and each lower support foot are detachably connected with the support frame through fasteners.

[0004] However, the technical scheme has the following disadvantages: the rotating parts lack control members, and the rotating action cannot be stopped according to individual needs, and the rotating parts also lack bearings and other accessories, which is not conducive to wear resistance and durability, and has certain limitations. SUMMARY

[0005] The utility model discloses a support seat for swivel chair, which is provided with a bearing mounting pipe in the middle of the base, an installation hole is formed in the bearing mounting pipe, a locking hole is also formed in the side wall of the bearing mounting pipe, a rotating shaft is arranged in the installation hole, a plurality of locking grooves are formed in a section of the shaft body of the rotating shaft corresponding to the locking hole, a fastener can be assembled in the locking hole to press the locking grooves and stop the rotation of the rotating shaft, and the rotating shaft can rotate freely after the fastener is removed.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a support seat for swivel chair, comprising a base, a bearing mounting pipe is arranged in the middle of the base, an installation hole is formed in the bearing mounting pipe, and a locking hole is also formed in the side wall of the bearing mounting pipe; a rotating shaft is arranged in the installation hole, a plurality of locking grooves are formed in a section of the shaft body of the rotating shaft corresponding to the locking hole, and a fastener can be assembled in the locking hole to press the locking grooves and stop the rotation of the rotating shaft.

[0007] As a preferred, a shaft shoulder is arranged in the middle of the rotating shaft, the locking grooves are located below the shaft shoulder, a fixing groove is formed above the shaft shoulder, a snap spring groove is also formed in the lower end of the rotating shaft, and a snap spring is arranged in the snap spring groove.

[0008] As a kind of preferred, the rotating shaft is sleeved with two groups of bearings, which are located at the upper and lower ends of the locking groove and below the shaft shoulder.

[0009] As a kind of preferred, the bearing mounting pipe is provided with two groups of bearing holes corresponding to the bearings, the upper bearing is fixed between the shaft shoulder and the bearing hole, and the lower bearing is fixed between the bearing hole and the snap spring.

[0010] As a kind of preferred, the upper part of the rotating shaft is sleeved with a support rod, and the side wall of the support rod is provided with a fixing hole corresponding to the fixing groove, which presses the fixing groove by assembling a fastener.

[0011] As a kind of preferred, the support rod is Z-shaped.

[0012] As a kind of preferred, a dust cover is sleeved on the support rod, covering the upper part of the bearing mounting pipe.

[0013] As a kind of preferred, the base is provided with several inclined struts, which are evenly distributed and fixedly connected to the outer wall of the bearing mounting pipe.

[0014] The beneficial effects of the present application are as follows:

[0015] (1) The locking hole in the bearing mounting pipe and the locking groove on the rotating shaft are set, and the detachable fastener is assembled to control the rotation of the rotating shaft, which is simple in structure and convenient to operate, and can flexibly switch the working state according to individual needs.

[0016] (2) The bearing is arranged between the rotating shaft and the bearing mounting pipe to cooperate and connect, so as to reduce the friction generated in the rotating process, the resistance change in the rotating process is small, the rotating angle and speed of the rotating shaft are more easily controlled, the wear is also reduced, and the service life is prolonged.

[0017] (3) The support rod is Z-shaped, which can effectively disperse the pressure, and when the user tilts the body or generates lateral force in rapid rotation, the Z-shaped support rod can effectively resist the lateral force, ensure the stability of the base, and reduce the risk of tilting.

[0018] (4) The base is provided with several inclined struts to support and fixedly connect the bearing mounting pipe, so as to reduce the weight of the base, facilitate the stacking between the base and other components during logistics packaging, improve the space utilization rate, and reduce the transportation layer.

[0019] In summary, the present application has the advantages of simple structure, convenient operation, flexible switching of working state, stable and durable, light and portable packaging, etc. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Overall structure of the present application Figure 1 ;

[0021] Figure 2 Overall structure of the present application Figure 2 ;

[0022] Figure 3 Partial sectional view of the present application

[0023] Figure 4 Partial sectional view of the present application

[0024] Figure 5 Partial view of the present application

[0025] Figure 6 Partial view of the present application

[0026] Fig. 1 is a partial view of the present application; Fig. 2 is a partial view of the present application; Fig. 3 is a partial view of the present application; Fig. 4 is a partial view of the present application; Fig. 5 is a partial view of the present application; Fig. 6 is a partial view of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Example 1

[0030] like Figures 1 to 6 As shown, this embodiment provides a support base for a swivel chair, including a base 1. A bearing mounting tube 2 is provided in the middle of the base 1. The bearing mounting tube 2 has a mounting hole 21 and a locking hole 22 is also provided through the side wall of the bearing mounting tube 2. A rotating shaft 3 is provided in the mounting hole 21. A plurality of locking grooves 31 are provided on a section of the rotating shaft 3 corresponding to the locking hole 22. The rotation of the rotating shaft 3 can be stopped by pressing the locking grooves 31 with fasteners installed in the locking hole 22.

[0031] It is worth mentioning that by setting the locking hole 22 in the bearing mounting tube 2 and the locking groove 31 on the rotating shaft 3, and cooperating with the installed fasteners, the rotation of the rotating shaft 3 is restricted, so that the base 1 is switched to a fixed non-rotating working state, which meets individual needs, has a simple structure, and is easy to operate.

[0032] like Figure 2 , 5 As shown, a shoulder 32 is provided in the middle of the rotating shaft 3, and the locking groove 31 is located below the shoulder 32; a fixing groove 33 is provided above the shoulder 32; a retaining ring groove 34 is also provided at the lower end of the rotating shaft 3; a retaining ring 35 is provided in the retaining ring groove 34.

[0033] It is worth mentioning that the rotating shaft 3 has a simple external structure and is easy to process. The shoulder 32 can accurately position the shaft axially. During rotation, it can also prevent the movement of other parts fitted on it. The shoulder 32 can also be used as a support point to assist in assembly and disassembly.

[0034] likeFigure 2 , 3 As shown, two sets of bearings 4 are sleeved on the rotating shaft 3. The bearings are located at the upper and lower ends of the locking groove 31, and both are located below the shaft shoulder 32.

[0035] It is worth mentioning that setting two sets of bearings 4 can share the load, extend the service life, reduce shaft sway and offset, and ensure the stability of the rotating shaft 3.

[0036] like Figure 2 , 4 As shown, the bearing mounting tube 2 has two sets of bearing holes 23 corresponding to the bearing 4. The upper bearing 4 is fixed between the shoulder 32 and the bearing hole 23; the lower bearing 4 is fixed between the bearing hole 23 and the retaining ring 35.

[0037] It is worth mentioning that a bearing 4 is installed between the rotating shaft 3 and the bearing mounting tube 2 to connect them, which reduces the friction generated during rotation. The resistance changes during rotation are small, making it easier to control the rotation angle and speed of the rotating shaft 3, reducing wear, and extending its service life.

[0038] like Figure 2 , 3 As shown, a support rod 5 is sleeved on the upper part of the rotating shaft 3, and a fixing hole 51 is opened on the side wall of the support rod 5 corresponding to the fixing groove 33. The fixing hole 51 is pressed against the fixing groove 33 by mounting fasteners.

[0039] It is worth mentioning that by assembling fasteners that pass through fixing holes 51 and then press against fixing grooves 33, the rotating shaft 3 and the support rod 5 are fixedly connected, ensuring that the two can rotate synchronously, avoiding relative rotation, reducing wear caused by contact friction between the rotating shaft 3 and the support rod 5, and increasing service life.

[0040] like Figure 1 As shown, the support rod 5 is bent in a Z-shape.

[0041] It is worth mentioning that the support rod is designed with a Z-shaped bend, which can effectively distribute pressure. When the user tilts their body or rotates rapidly and generates lateral force, the Z-shaped support rod can effectively resist the lateral force, ensuring the stability of the base and reducing the risk of tipping over.

[0042] like Figure 2 , 3 As shown, a dust cover 6 is fitted onto the support rod 5, which covers the bearing mounting tube 2.

[0043] It is worth mentioning here that the dust cover 6 covers the bearing mounting tube 2, which not only prevents dust and other particles from falling into the bearing mounting tube 2, thereby ensuring smooth rotation of the rotating shaft 3, but also reduces noise during rotation.

[0044] As shown in Figure 1 , 2 , the base 1 is provided with a plurality of inclined braces 11, which are uniformly distributed and fixedly connected to the outer wall of the bearing mounting tube 2.

[0045] It is worth mentioning here that the base is provided with a plurality of inclined braces to support and fixedly connect the bearing mounting tube, which reduces the weight of the base and facilitates stacking between other components during logistics packaging, has high space utilization and reduces transportation layers.

[0046] Example Two

[0047] As shown in Figures 1 to 6 , the same or corresponding parts as in Example One are denoted by the same reference numerals as in Example One, and for the sake of simplicity, only the differences from Example One will be described below. The difference between this embodiment and Example One is that the support seat for the swivel chair comprises a base 1, the middle part of the base 1 is provided with a bearing mounting tube 2, the bearing mounting tube 2 is provided with a mounting hole 21, and the side wall of the bearing mounting tube 2 is also provided with a locking hole 22; the mounting hole 21 is provided with a rotating shaft 3, a section of the shaft body of the rotating shaft 3 corresponding to the locking hole 22 is provided with a plurality of locking grooves 31, and the locking hole 22 and the locking grooves 31 are not assembled with fasteners.

[0048] It is worth mentioning here that when no fastener is provided, the rotating shaft 3 and the bearing mounting tube 2 can rotate relative to each other, and the base 1 switches to a rotatable working state.

[0049] Working steps

[0050] When the base 1 switches to a rotatable working state, the support rod 5 is forced to rotate, driving the rotating shaft 3 to rotate, and the base 1 and the bearing mounting tube 2 fixed thereon remain relatively stationary;

[0051] When the base 1 switches to a fixed working state, the locking hole 22 in the bearing mounting tube 2 and the locking grooves 31 on the rotating shaft 3 cooperate with the installed fasteners to limit the rotation of the rotating shaft 3, and the support rod 5 no longer rotates under force.

[0052] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A support base for a swivel chair comprising a base, a bearing mounting tube being provided in the middle of the base, characterized in that ； The bearing mounting pipe is provided with a mounting hole, and a locking hole is further provided through the sidewall of the bearing mounting pipe; A rotating shaft is arranged in the mounting hole, and a section of the shaft body of the rotating shaft corresponding to the locking hole is provided with a plurality of locking grooves, and the locking hole can stop the rotation of the rotating shaft by assembling a fastener to press the locking grooves.

2. The support seat for a swivel chair according to claim 1, wherein A shaft shoulder is arranged in the middle of the rotating shaft, and the locking grooves are located below the shaft shoulder; A fixing groove is arranged above the shaft shoulder; A clamping spring groove is further arranged at the lower end of the rotating shaft; A clamping spring is arranged in the clamping spring groove.

3. The support seat for a swivel chair according to claim 2, wherein Two groups of bearings are arranged on the rotating shaft, and the bearings are respectively arranged at the upper and lower ends of the locking grooves and below the shaft shoulder.

4. The support seat for a swivel chair according to claim 3, wherein Two groups of bearing holes corresponding to the bearings are arranged in the bearing mounting pipe, the upper bearing is fixed between the shaft shoulder and the bearing hole, and the lower bearing is fixed between the bearing hole and the clamping spring. A support rod is arranged on the upper part of the rotating shaft, a fixing hole corresponding to the fixing groove is arranged on the sidewall of the support rod, and the fixing hole is arranged by assembling a fastener to press the fixing groove.

5. The support seat for a swivel chair according to claim 2, wherein The support rod is arranged in a Z-shaped curve.

6. The support seat for a swivel chair according to claim 5, wherein A dust cover is arranged on the support rod, and the dust cover covers the upper part of the bearing mounting pipe.

7. The support seat for a swivel chair according to claim 5, wherein A plurality of inclined supports are arranged on the base, and the inclined supports are uniformly distributed and fixedly connected to the outer wall of the bearing mounting pipe.

8. The support seat for a swivel chair according to claim 1, wherein ​

Images