Chair base bottom support assembly with automatic reset function and chair base

Abstract

The utility model discloses a seat cork base assembly with an automatic reset function and a seat, and relates to the technical field of chair accessories, the seat cork base assembly comprises a mounting cylinder and a rotating shaft connected through a reset mechanism, the bottom or the top of the rotating shaft is provided with a positioning groove, the seat cork base assembly further comprises a supporting piece with a plurality of positioning holes, and the supporting piece is arranged in the positioning groove. The supporting piece is fixed to the top of the rotating shaft under positioning of the positioning groove and the positioning hole, the positioning groove in the bottom of the rotating shaft and the positioning hole in the supporting piece are respectively positioned and fixed through the positioning groove and the positioning hole, and the situation that when the supporting piece is fixedly installed on the rotating shaft, the rotating shaft rotates relative to the installing cylinder is avoided firstly, and the rotating shaft is prevented from rotating relative to the installing cylinder; and secondly, the supporting piece can be horizontally and accurately installed on the rotating shaft, and meanwhile welding and fixing of the supporting piece on the rotating shaft in the follow-up process are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair accessory technical field especially, it relates to a chair seat bottom support subassembly and chair seat with automatic reset function. BACKGROUND

[0002] Swivel chair is usually used in office or home, and is popular because it can be adjusted and swung according to the favorite sitting posture and can be oriented at will.

[0003] At present, when the swivel chair is left, the chair seat deviates from the normal position after resetting, because in the production process of the swivel chair, the rotating shaft in the resetting mechanism deviates to the left or right during installation, and the chair seat is still installed on the rotating shaft in the normal position, so that the chair seat deviates from the normal position after the rotating shaft resets. SUMMARY

[0004] The utility model provides a chair seat bottom support subassembly and chair seat with automatic reset function, solve the technical problem that the rotating shaft cannot be positioned and fixed in the resetting mechanism of the current swivel chair.

[0005] To solve the above technical problems, the utility model provides a chair seat bottom support subassembly with automatic reset function, which comprises an installation cylinder and a rotating shaft connected by a resetting mechanism, a positioning groove is formed in the bottom or top of the rotating shaft, and the chair seat bottom support subassembly further comprises a supporting piece with a plurality of positioning holes.

[0006] Preferably, the center of the supporting piece is provided with a rotating shaft mounting hole, the top of the rotating shaft is inserted into the rotating shaft mounting hole, and the top of the rotating shaft is inserted into the rotating shaft mounting hole and fixedly connected thereto.

[0007] The above technical scheme is adopted: the center of the supporting piece is provided with a rotating shaft mounting hole, the top of the rotating shaft is inserted into the rotating shaft mounting hole, and the top of the rotating shaft is inserted into the rotating shaft mounting hole and fixedly connected thereto.

[0008] Preferably, the supporting piece is in any one of a ring-shaped plate shape and a ring-shaped disc shape.

[0009] The above technical scheme is adopted: the supporting piece is in any one of a ring-shaped plate shape and a ring-shaped disc shape.

[0010] Preferably, a connecting disc is connected to the supporting piece through a detachable connecting structure, and a plurality of seat connecting holes are arranged on the connecting disc.

[0011] The above technical scheme has the following advantages: the connecting disc is connected to the supporting piece through the detachable connecting structure, and the connecting disc is convenient to disassemble; and the plurality of seat connecting holes are arranged on the connecting disc, so that the seat is convenient to install on the connecting disc.

[0012] Preferably, the detachable connecting structure comprises a plurality of through holes arranged on the connecting disc and corresponding to the positioning holes one by one, and the detachable connecting structure further comprises a fastening bolt penetrating through the positioning holes and the through holes, and a nut is threadedly connected to a threaded section of the fastening bolt.

[0013] The above technical scheme has the following advantages: the detachable connecting structure comprises a plurality of through holes arranged on the connecting disc and corresponding to the positioning holes one by one, and the detachable connecting structure further comprises a fastening bolt penetrating through the positioning holes and the through holes, and a nut is threadedly connected to a threaded section of the fastening bolt, and a washer is threadedly arranged on the threaded section of the fastening bolt to enhance the anti-loosening performance of the connecting disc and the supporting piece after fastening.

[0014] Preferably, the reset mechanism comprises a reset washer fixed in the mounting cylinder, the lower end of the rotating shaft penetrates through the reset washer, an annular inclined track surface is arranged on the upper end of the reset washer, a lifting seat is slidably connected to the rotating shaft in the axial direction and fixed to the rotating shaft in the axial direction, a walking piece is arranged on the lifting seat and in tangential active contact with the inclined track surface and walks on the inclined track surface, and the reset mechanism further comprises an elastic piece that applies a downward elastic force along the axial direction of the rotating shaft to the lifting seat and forces the walking piece and the inclined track surface to always be in tangential active contact.

[0015] The above technical scheme has the following advantages: the reset mechanism comprises a reset washer fixed in the mounting cylinder, the lower end of the rotating shaft penetrates through the reset washer, an annular inclined track surface is arranged on the upper end of the reset washer, a lifting seat is slidably connected to the rotating shaft in the axial direction and fixed to the rotating shaft in the axial direction, a walking piece is arranged on the lifting seat and in tangential active contact with the inclined track surface and walks on the inclined track surface, and the reset mechanism further comprises an elastic piece that applies a downward elastic force along the axial direction of the rotating shaft to the lifting seat and forces the walking piece and the inclined track surface to always be in tangential active contact; when the rotating shaft rotates, the walking piece walks on the inclined track surface of the reset washer, the elastic piece is compressed under the action of the lifting seat when the walking piece reaches the highest point of the inclined track surface, the elastic piece releases the elastic potential energy at this moment, the walking piece returns to the lowest point from the highest point, and finally stays at the lowest point, thereby achieving the reset function.

[0016] Preferably, the positioning slot is arranged at the bottom of the rotating shaft and in the axial direction of the rotating shaft.

[0017] By arranging the positioning slot at the bottom of the rotating shaft and in the axial direction of the rotating shaft, the positioning slot and the rotating shaft are on the same axis, and positioning is more accurate.

[0018] Preferably, the projections of the at least two positioning holes and the positioning slot on a plane perpendicular to the rotating shaft are in a triangular distribution.

[0019] By arranging the projections of the at least two positioning holes and the positioning slot on a plane perpendicular to the rotating shaft in a triangular distribution, the triangular structure has stability, so that when positioning, the projections of the two positioning holes and the positioning slot on the plane form a triangular structure, which can ensure the accuracy of positioning and the stability of the rotating shaft and the supporting member.

[0020] The application also provides a chair seat, which comprises a chair seat body, and the lower surface of the chair seat body is connected with the chair seat bottom support assembly with an automatic reset function.

[0021] Preferably, at least three supporting legs are connected to the side of the chair seat bottom support assembly with an automatic reset function.

[0022] Compared with the related art, the application has the following beneficial effects:

[0023] 1. Compared with the conventional automatic reset and righting structure, the positioning slot and the positioning hole are arranged, the positioning slot at the bottom of the rotating shaft and the positioning hole on the supporting member are positioned and fixed after the reset mechanism is reset, the supporting member is fixedly installed on the rotating shaft after the positioning slot is fixed, the rotating shaft does not rotate relative to the mounting cylinder, the supporting member and the rotating shaft are installed in the same forward position, the chair seat is installed on the supporting member, the supporting member is installed in the forward position, the rotating shaft is positioned and fixed in the forward position, and therefore the reset mechanism of the swivel chair can right the angle of the chair seat after reset. After the positioning hole is positioned and fixed, the supporting member is conveniently arranged on the rotating shaft in a horizontal and accurate manner, and the supporting member is conveniently welded and fixed on the rotating shaft. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a structural schematic view of a chair seat bottom support assembly with an automatic reset function;

[0025] Figure 2 FIG. 2 is a structural top view of the chair seat bottom support assembly with an automatic reset function;

[0026] Figure 3Figure shows a chair seat bottom support assembly with automatic reset function and diagram;

[0027] Figure 4 Figure shows a reset mechanism sectional view of a chair seat bottom support assembly with automatic reset function.

[0028] Figure mark: 1, mounting cylinder; 3, reset mechanism; 31, rotating shaft; 32, elastic member; 33, lifting seat; 35, walking piece; 36, reset washer; 38, inclined track surface; 6, positioning groove; 7, supporting piece; 74, positioning hole; 8, through hole; 9, connecting disc; 10, fastening bolt; 11, nut; 12, chair seat connecting hole. DETAILED DESCRIPTION

[0029] 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 other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one

[0031] As shown in Figures 1-4 , a chair seat bottom support assembly with automatic reset function, comprising a mounting cylinder 1 and a rotating shaft 31 connected by a reset mechanism 3, a positioning groove 6 is formed at the bottom or top of the rotating shaft 31, the chair seat bottom support assembly further comprises a supporting piece 7 with a plurality of positioning holes 74; when the reset mechanism 3 forces the rotating shaft 31 to be in the reset position, the supporting piece 7 is fixed on the top of the rotating shaft 31 under the positioning of the positioning groove 6 and at least part of the positioning holes 74;

[0032] When the reset mechanism 3 is reset, the positioning groove 6 at the bottom of the rotating shaft 31 and the positioning hole 74 on the supporting piece 7 are respectively positioned and fixed. After the positioning groove 6 is fixed, when the supporting piece 7 is fixedly installed on the rotating shaft 31, the rotating shaft 31 is prevented from rotating relative to the mounting cylinder 1, so that the rotating shaft 31 is not in the normal angle. If the chair seat is installed on the supporting piece 7 at this moment, the chair seat will deviate from the normal position after the reset mechanism 3 is reset. Therefore, by forming the positioning groove 6 on the rotating shaft 31, the positioning and fixing of the rotating shaft 31 can prevent this phenomenon from occurring.

[0033] The positioning hole 74 of the support piece 7 is positioned and fixed, so that the support piece 7 is installed on the rotating shaft 31, and the first convenient installation of the support piece 7 on the rotating shaft 31 is stable, and the subsequent fixation such as welding fixation is facilitated, and secondly, the positioning hole 74 is set, so that when the support piece 7 is installed on the rotating shaft 31, the support piece 7 and the rotating shaft 31 can be fixed at a set angle in a forward direction, and after the subsequent chair seat is installed on the support piece 7 in a forward direction and the reset mechanism 3 is reset, the angle of the chair seat is in a forward direction;

[0034] As shown in Figures 1-2 , the center of the support piece 7 is provided with a rotating shaft mounting hole, the top of the rotating shaft 31 is inserted into the rotating shaft mounting hole and the two are fixedly connected, so that the installation of the support piece 7 on the rotating shaft 31 is more convenient, the support piece 7 is in any one of a ring plate shape and a ring disc shape, and in Figures 1-2 , the support piece 7 is in a ring disc shape, and in Figure 3 , the support piece 7 is in a ring plate shape;

[0035] As shown in Figure 4 , the working principle of the reset mechanism 3 is that when the rotating shaft 31 rotates, the walking piece 35 walks on the inclined track surface 38 opened by the reset washer 36, and when it walks to the high point of the inclined track surface 38, the elastic piece 32 is compressed under the action of the lifting seat 33, at this moment, the elastic piece 32 releases the elastic potential energy, so that the walking piece 35 returns from the highest point to the lowest point again, and finally stays at the lowest point, realizing the reset function.

[0036] Example two

[0037] As shown in Figure 3 , the connecting disc 9 is connected to the support piece 7 through a detachable connection structure, a plurality of chair seat connecting holes 12 are arranged on the connecting disc 9, the detachable connection structure includes a plurality of through holes 8 arranged on the connecting disc 9 and corresponding to the positioning holes 74, and the detachable connection structure further includes a fastening bolt 10 penetrating through the positioning holes 74 and the through holes 8, a nut 11 is threadedly connected to the threaded section of the fastening bolt 10, the positioning groove 6 is arranged at the bottom of the rotating shaft 31 and arranged in the axial direction of the rotating shaft 31, the projections of at least two positioning holes 74 and the positioning groove 6 on the plane perpendicular to the rotating shaft 31 form a triangular distribution, the triangular structure has stability, so that when positioning, the projections of two positioning holes 74 and one positioning groove 6 on the plane form a triangular structure, which can ensure the accuracy of positioning and the stability of the rotating shaft 31 and the support piece 7; the positions of the chair seat connecting holes 12 are processed according to the positioning of the through holes 8 to meet the set position connection with the chair seat finally;

[0038] As shown in Figure 3As shown, the support 7 in the embodiment is ring plate-shaped, the support 7 is welded on the rotating shaft 31 first, then the connecting disc 9 is arranged on the support 7, a plurality of through holes 8 are formed in the support 7 and the connecting disc 9 one by one, the fastening bolt 10 is arranged in the through hole 8 to fix and connect the support 7 and the connecting disc 9, a gasket is arranged on the threaded section of the fastening bolt 10, and the nut 11 is fastened, so that the loosening between the connecting disc 9 and the support 7 can be effectively prevented, the seat connecting hole 12 is formed in the connecting disc 9, and the seat can be conveniently installed on the connecting disc 9;

[0039] Working principle: as Figures 1-4 As shown, when the reset mechanism 3 is reset, the positioning groove 6 at the bottom of the rotating shaft 31 and the positioning hole 74 on the support 7 are fixed and positioned, after the positioning groove 6 is fixed, the support 7 is fixedly installed on the rotating shaft 31, the rotating shaft 31 does not rotate relative to the mounting cylinder 1, the support 7 and the rotating shaft 31 are installed in a forward position, and after the seat is installed on the support 7, the seat is installed in a forward position, the support 7 is installed in a forward position, and the rotating shaft 31 is fixed and positioned in a forward position, so that after the reset mechanism 3 of the swivel chair is reset, the seat can be returned to a normal angle, after the positioning hole 74 is fixed and positioned, the support 7 is installed on the rotating shaft 31, the support 7 can be conveniently arranged on the rotating shaft 31 at a normal angle, and the support 7 is conveniently welded and fixed on the rotating shaft 31.

[0040] Embodiment three

[0041] Based on the first embodiment or the second embodiment, the third embodiment further discloses a chair seat, which comprises the chair seat bottom support assembly with an automatic reset function in the first embodiment or the second embodiment.

[0042] The side of the chair seat bottom support assembly with an automatic reset function is connected with at least three supporting legs, the supporting legs provide support for the chair seat, in the case of saving production cost, the three supporting legs are arranged to be inclined around the central axis of the mounting cylinder 1, the top of the three supporting legs converges on the mounting cylinder 1, the bottom of the three supporting legs supports the ground, and when the contact points of the three supporting legs on the ground are sequentially connected to form an equilateral triangle, the chair seat can be stably supported.

[0043] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A chair seat bottom support assembly with automatic return function, comprising a mounting cylinder (1) and a rotating shaft (31) connected by a return mechanism (3), characterized in that, A positioning slot (6) is formed in the bottom or top of the rotating shaft (31), and the seat bottom support assembly further comprises a support piece (7) having a plurality of positioning holes (74); when the reset mechanism (3) forces the rotating shaft (31) to be in the reset position, the support piece (7) is fixed to the top of the rotating shaft (31) under the positioning of the positioning slot (6) and at least part of the positioning holes (74).

2. A seat bottom support assembly with automatic return function according to claim 1, characterized in that The center of the support piece (7) is provided with a rotating shaft mounting hole, and the top of the rotating shaft (31) is inserted into the rotating shaft mounting hole and fixedly connected thereto.

3. The seat bottom support assembly with automatic return function of claim 1, wherein, The support piece (7) is in any one of a ring-shaped plate and a ring-shaped disc.

4. The seat bottom support assembly with automatic return function of claim 3, wherein, A connecting disc (9) is connected to the support piece (7) through a detachable connection structure, and a plurality of seat connecting holes (12) are formed in the connecting disc (9).

5. The seat bottom support assembly with automatic return function of claim 4, wherein, The detachable connection structure comprises a plurality of through holes (8) formed in the connecting disc (9) and corresponding to the positioning holes (74) one by one, and further comprises a fastening bolt (10) penetrating through the positioning holes (74) and the through holes (8), and a nut (11) is threadedly connected to the threaded section of the fastening bolt (10).

6. The chair seat pan support assembly with automatic return function of claim 1, wherein, The reset mechanism (3) comprises a reset washer (36) fixed in the mounting cylinder (1), and the lower end of the rotating shaft (31) penetrates through the reset washer (36), and an annular inclined track surface (38) is formed in the upper end of the reset washer (36), and a lifting seat (33) is axially slidingly connected to the rotating shaft (31) and axially fixed relative to the rotating shaft (31), and a walking piece (35) is arranged on the lifting seat (33) and in tangential movable contact with the inclined track surface (38) and walks on the inclined track surface (38), and the reset mechanism (3) further comprises an elastic piece (32) for applying a downward elastic force along the axis of the rotating shaft (31) to the lifting seat (33) and forcing the walking piece (35) and the inclined track surface (38) to always be in tangential movable contact.

7. The chair seat bottom support assembly with automatic return function of claim 1, wherein, The positioning slot (6) is arranged at the bottom of the rotating shaft (31) and in the axial direction of the rotating shaft (31).

8. The chair seat bottom support assembly with automatic return function of claim 1, wherein, The projections of the at least two positioning holes (74) and the positioning slot (6) on a plane perpendicular to the rotating shaft (31) are in triangular distribution.

9. A chair seat, characterized in that The seat comprises a seat body, and the lower surface of the seat body is connected with the seat bottom support assembly with an automatic reset function according to any one of claims 1-8.

10. A seat as claimed in claim 9, characterised in that At least three supporting legs are connected to the side of the seat bottom support assembly with an automatic reset function.

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