CN111248675A - Adjustable swivel chair that inclines of no chassis - Google Patents

Abstract

The invention relates to the technical field of office swivel chairs, in particular to a base-plate-free adjustable tilting swivel chair, which aims to overcome the lag of the prior art and provide the base-plate-free adjustable tilting swivel chair, and comprises a supporting seat, wherein the upper end of the supporting seat is connected with a seat frame through a rotating shaft, the seat frame is in a ∠ shape, the opening end of the seat frame is connected with a backrest through a connecting part, and handrails are arranged at two ends of the connecting part.

Description

Adjustable swivel chair that inclines of no chassis

Technical Field

The invention relates to the technical field of office swivel chairs, in particular to a base-plate-free adjustable tilting swivel chair which achieves the use effect of comfortable tilting by utilizing material deformation and matching with a simple torsion spring technology, and achieves the ideal state of ergonomics by connecting an armrest shifting piece to the operation of lifting and tilting functions.

Background

The office swivel chair is generally used for the crowd of official working and IT trade, and common office swivel chair reaches the effect of adjusting the seat height and inclining through dedicated chassis mechanism, because the chassis that current product used on the market is produced with the metal mostly, and the structure is complicated, adjusts the operation inconveniently, and the outward appearance is relatively poor and manufacturing cost is higher, is unfavorable for the transportation installation, and the maintenance is more, and the condition such as life weak point is extremely unfavorable to modern official working and environmental protection.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a non-chassis adjustable tilting swivel chair.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a no chassis is adjustable to lean on swivel chair, includes supporting seat 1, the upper end of supporting seat 1 is connected with seat frame 3 through pivot 2, seat frame 3 is "∠" form, is the material morphism body, the open end of seat frame 3 is connected withback 4 through adapting unit 6, seat frame 3 of "∠" column structure can makeback 4 be pressed and take place the deformation, produces the thrust of inclining through deformation pressure, adapting unit 6's both ends are installed thehandrail 5 through locking screw 9, thepiece 501 operation chair that inclines onhandrail 5 faces upward, its characterized in that, the upper end of the open end of seat frame 3 is equipped with first connectingpiece 301, the lower extreme of the open end of seat frame 3 is equipped with second connectingpiece 302, install adapting unit 6 throughlocking screw pivot 11 between first connectingpiece 301 and the second connectingpiece 302, install torsional spring 8 between adapting unit 6 and the second connectingpiece 302, the internally mounted of adapting unit 6 hasangle adjusting part 7, the one end ofangle adjusting part 7 is connected through the meshing rack with second connecting piece (302) between 303, the other end ofangle adjusting part 7 is connected withhandrail 5 through acting as go-between the acting.

The middle part of the connecting part 6 is provided with an adjusting slidinggroove 601 for installing theangle adjusting part 7, the blind end of the adjusting slidinggroove 601 is provided with apositioning hole 605, the inside of the connecting part 6 is provided with a secondlocking installation hole 603 matched with the lockingscrew rotating shaft 11, the connecting part 6 is installed and locked on the first connectingpiece 301 and the second connectingpiece 302 through the matching of the lockingscrew rotating shaft 11 and the secondlocking installation hole 603, the two ends of the connecting part 6 are provided with a firstlocking installation hole 602 and anut installation hole 604 matched with the locking screw 9, and thehandrail 5 is installed on the connecting part 6 through the matching of the locking screw 9 and thenut 12 in the firstlocking installation hole 602 and thenut installation hole 604.

Theangle adjusting part 7 comprises amovable block 701 and afixed block 702, thefixed block 702 is sleeved at one end of themovable block 701, ashaft 703 penetrates through the middle parts of themovable block 701 and thefixed block 702, one end of theshaft 703 is fixed on afixed end 704 at one end of thefixed block 702, the other end of theshaft 703 is inserted into thepositioning hole 605, afirst spring 7010 is installed on theshaft 703 between themovable block 701 and thefixed block 702, and themovable block 701 can move back and forth in thefixed block 702 along theshaft 703.

One end of themovable block 701 is provided with asliding groove 7017, abaffle 7018 is arranged in thesliding groove 7017, a slidingpositioning tooth 7011 is sleeved on ashaft 703 between thebaffle 7018 and the end of thesliding groove 7017, and asecond spring 7012 and athird spring 7013 are respectively mounted onshafts 703 at two ends of the slidingpositioning tooth 7011.

The upper end of the other end of themovable block 701 is provided with acirculation positioning groove 7019, thecirculation positioning groove 7019 is of a stepped circulation structure, one end of thecirculation positioning groove 7019 is anunlocking end 7021, the other end of thecirculation positioning groove 7020 is alocking end 7020, apositioning rod 705 is installed in thecirculation positioning groove 7019, thepositioning rod 705 is in a reverse U shape, one end of thepositioning rod 705 is arranged in thecirculation positioning groove 7019, the other end of thepositioning rod 705 is inserted in a fixedend 704, apositioning hole 7015 for inserting thepositioning rod 705 is formed in the fixedend 704, asnap spring 706 matched with the fixedend 704 is arranged above thepositioning rod 705, and asecond notch 7016 matched with thepositioning rod 705 is formed.

The lower extreme of the other end ofmovable block 701 is equipped with interior wirecasing pilot hole 709, fixed mounting has thestay wire 10 in the interior wirecasing pilot hole 709, the other end ofstay wire 10 wears to establish and is connected with theplectrum 501 ofhandrail 5 tip behind the interiorhollow handrail 5, fixedblock 702 is equipped with theouter wire casing 708 of matching with interior wirecasing pilot hole 709.

Thepull wire 10 is fixed on thefixing block 702 through a fixing adjustingnut 707.

The second connectingpiece 302 is provided with a fixedpositioning tooth 303, and the fixedpositioning tooth 303 is meshed with the slidingpositioning tooth 7011.

Asleeve 7014 is arranged between the slidingpositioning tooth 7011 and theshaft 703.

The invention has the beneficial effects that: thebackrest 4 is adjusted and positioned by unlocking and locking theangle adjusting part 7, so that thebackrest 4 can be adjusted according to the requirements of a user, and the user can use the backrest more conveniently and comfortably.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a third schematic structural view of the present invention;

FIG. 4 is a fourth schematic structural view of the present invention;

FIG. 5 is a fifth schematic structural view of the present invention;

FIG. 6 is a sixth schematic structural view of the present invention;

FIG. 7 is a schematic view showing a structure of a connecting member according to the present invention;

FIG. 8 is an exploded view of the angle adjustment member of the present invention;

FIG. 9 is an exploded view of the angle adjustment member of the present invention;

FIG. 10 is a bottom view of the angle adjustment member of the present invention;

FIG. 11 is a cross-sectional view of an angle adjustment member of the present invention;

FIG. 12 is a first exploded view of the armrest, coupling member and angular adjustment member of the present invention;

FIG. 13 is a second exploded view of the armrest, coupling member and angle adjustment member of the present invention;

FIG. 14 is a third exploded view of the armrest, coupling member and angle adjustment member of the present invention;

fig. 15 is an assembly view between the connecting member and the angle adjusting member in the present invention.

Shown in the figure: the support seat comprises a support seat 1, a rotating shaft 2, a seat frame 3, abackrest 4, anarmrest 5, a connecting component 6, an angle adjustingcomponent 7, a torsion spring 8, a locking screw 9, apull wire 10, a lockingscrew rotating shaft 11, anut 12, a first connectingpiece 301, a second connectingpiece 302, a fixedpositioning tooth 303, ashifting piece 501, an adjustingsliding chute 601, a firstlocking mounting hole 602, a secondlocking mounting hole 603, anut mounting hole 604, apositioning hole 605, amovable block 701, afixed block 702, ashaft 703, a fixedend 704, apositioning rod 705, asnap spring 706, a fixedadjusting nut 707, an outerpull wire groove 708, an inner pull wiregroove assembly hole 709, afirst spring 7010, a slidingpositioning tooth 7011, asecond spring 7012, athird spring 7013, asleeve 7014, apositioning hole 7015, asecond notch 7016, asliding chute 7017, abaffle 7018, acirculation positioning groove 7019, alocking end 7020 and.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

A bottomless adjustable tilting swivel chair comprises a supporting seat 1, wherein rollers are mounted at the lower end of the supporting seat 1, the upper end of the supporting seat 1 is connected with a seat frame 3 through a rotating shaft 2, the seat frame 3 is in an ∠ shape and is in a material deformation, the open end of the seat frame 3 is connected with abackrest 4 through a connecting part 6, the seat frame 3 in a ∠ -shaped structure can enable thebackrest 4 to be pressed to deform, tilting thrust is generated through deformation pressure, two ends of the connecting part 6 are provided witharmrests 5 through locking screws 9, a shiftingsheet 501 on thearmrests 5 can operate tilting of the chair, the bottomless adjustable tilting swivel chair is characterized in that a first connectingpiece 301 is arranged at the upper end of the open end of the seat frame 3, a second connectingpiece 302 is arranged at the lower end of the open end of the seat frame 3, the connecting part 6 is mounted between the first connectingpiece 301 and the second connectingpiece 302 through a lockingscrew rotating shaft 11, a torsion spring 8 is mounted between the connecting part 6 and the second connectingpiece 302, anangle adjusting part 7 is mounted inside the connecting part 6, one end of theangle adjusting part 7 is meshed with the second connectingpiece 302 through a rack, and the other end.

As shown in fig. 7, an adjusting slidinggroove 601 for installing theangle adjusting member 7 is disposed in the middle of the connecting member 6, apositioning hole 605 is disposed at the blind end of the adjusting slidinggroove 601, a secondlocking mounting hole 603 cooperating with the lockingscrew rotating shaft 11 is disposed inside the connecting member 6, the connecting member 6 is installed and locked on the first connectingmember 301 and the second connectingmember 302 by cooperation of the lockingscrew rotating shaft 11 and the secondlocking mounting hole 603, a firstlocking mounting hole 602 and anut mounting hole 604 cooperating with the locking screw 9 are disposed at two ends of the connecting member 6, and thearmrest 5 is installed on the connecting member 6 by cooperation of the locking screw 9 and thenut 12 in the firstlocking mounting hole 602 and thenut mounting hole 604.

As shown in fig. 8 to 11, the angle adjustingcomponent 7 includes amovable block 701 and afixed block 702, thefixed block 702 is sleeved on one end of themovable block 701, ashaft 703 is provided through the middle portion of themovable block 701 and thefixed block 702, one end of theshaft 703 is fixed on a fixedend 704 at one end of thefixed block 702, the other end of theshaft 703 is inserted into thepositioning hole 605, afirst spring 7010 is installed on theshaft 703 between themovable block 701 and thefixed block 702, and themovable block 701 can move back and forth in thefixed block 702 along theshaft 703.

One end of themovable block 701 is provided with asliding groove 7017, abaffle 7018 is arranged in thesliding groove 7017, a slidingpositioning tooth 7011 is sleeved on ashaft 703 between thebaffle 7018 and the end of thesliding groove 7017, and asecond spring 7012 and athird spring 7013 are respectively mounted onshafts 703 at two ends of the slidingpositioning tooth 7011.

The upper end of the other end of themovable block 701 is provided with acirculation positioning groove 7019, thecirculation positioning groove 7019 is of a stepped circulation structure, one end of thecirculation positioning groove 7019 is anunlocking end 7021, the other end of thecirculation positioning groove 7020 is alocking end 7020, apositioning rod 705 is installed in thecirculation positioning groove 7019, thepositioning rod 705 is in a reverse U shape, one end of thepositioning rod 705 is arranged in thecirculation positioning groove 7019, the other end of thepositioning rod 705 is inserted in a fixedend 704, apositioning hole 7015 for inserting thepositioning rod 705 is formed in the fixedend 704, asnap spring 706 matched with the fixedend 704 is arranged above thepositioning rod 705, and asecond notch 7016 matched with thepositioning rod 705 is formed.

The lower extreme of the other end ofmovable block 701 is equipped with interior wirecasing pilot hole 709, fixed mounting has thestay wire 10 in the interior wirecasing pilot hole 709, the other end ofstay wire 10 wears to establish and is connected with theplectrum 501 ofhandrail 5 tip behind the interiorhollow handrail 5, fixedblock 702 is equipped with theouter wire casing 708 of matching with interior wirecasing pilot hole 709.

Thepull wire 10 is fixed on thefixing block 702 through a fixing adjustingnut 707.

The second connectingpiece 302 is provided with a fixedpositioning tooth 303, and the fixedpositioning tooth 303 is meshed with the slidingpositioning tooth 7011.

Asleeve 7014 is arranged between the slidingpositioning tooth 7011 and theshaft 703.

The working process of the invention is as follows: the pullingwire 10 is pulled by theplectrum 501, so that the pullingwire 10 drives themovable block 701 to move in thefixed block 702, thefirst spring 7010 is in a compressed state, meanwhile, the slidingpositioning teeth 7011 are separated from thefixed positioning teeth 303, thepositioning rod 705 slides from theunlocking end 7021 to thelocking end 7020 in the circulatingpositioning groove 7019, themovable block 701 is prevented from being restored to the original state under the elastic force of thefirst spring 7010, at the moment, a user can reliably move thebackrest 4 downwards on thebackrest 4, the seat frame 3 is enabled to be in a lying state under the deformation of the seat frame 3 and the back twisting action of the torsion spring 8 under the combined action of thebackrest 4, after theplectrum 501 is pulled again, themovable block 701 is restored to the original position under the spring force of thefirst spring 7010, the slidingpositioning teeth 7011 are engaged with the fixedpositioning teeth 303, the slidingpositioning teeth 7011 are buckled with thefixed positioning teeth 303, and thepositioning rod 705 slides from thelocking end 7020 to theunlocking end 7021 in, thereby realizing the positioning of thebackrest 4 and realizing the adjustment of the swivel chair from the lying state to the seat state in the same way.

Because thesecond spring 7012 and thethird spring 7013 are installed on theshaft 703 at the two ends of the slidingpositioning tooth 7011, theslidable positioning tooth 7011 returns to the original position under the spring force of the two springs, so as to assist in completely fastening the slidingpositioning tooth 7011 with the fixedpositioning tooth 303.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. The utility model provides a no chassis is adjustable to lean on swivel chair, includes supporting seat (1), the upper end of supporting seat (1) is connected with seat frame (3) through pivot (2), seat frame (3) are "∠" form, and for material morphism, the open end of seat frame (3) is connected with back (4) through adapting unit (6), handrail (5) are installed through locking screw (9) at adapting unit's (6) both ends, characterized in that, the upper end of the open end of seat frame (3) is equipped with first connecting piece (301), the lower extreme of the open end of seat frame (3) is equipped with second connecting piece (302), install adapting unit (6) through locking screw pivot (11) between first connecting piece (301) and second connecting piece (302), install torsional spring (8) between adapting unit (6) and second connecting piece (302), the internally mounted of adapting unit (6) has angle adjusting part (7), the one end of angle adjusting part (7) is connected through rack toothing between second connecting piece (302) (303), the other end of angle adjusting part (7) is connected with handrail (5) through drawing line (10).

2. The bottomless adjustable reclining swivel chair of claim 1, wherein: the middle part of the connecting part (6) is provided with an adjusting chute (601) for installing an angle adjusting part (7), the blind end of the adjusting sliding groove (601) is provided with a positioning hole (605), the connecting part (6) is internally provided with a second locking mounting hole (603) which is matched with the locking screw rotating shaft (11), the connecting component (6) is installed and locked on the first connecting piece (301) and the second connecting piece (302) through the matching of the locking screw rotating shaft (11) and the second locking installation hole (603), a first locking mounting hole (602) and a nut mounting hole (604) which are matched with the locking screw (9) are arranged at the two ends of the connecting part (6), the armrest (5) is mounted on the connecting member (6) by the engagement of the locking screw (9) with the first locking mounting hole (602) and the nut (12) in the nut mounting hole (604).

3. The bottomless adjustable reclining swivel chair of claim 2, wherein: the angle adjusting part (7) comprises a movable block (701) and a fixed block (702), the fixed block (702) is sleeved at one end of the movable block (701), a shaft (703) is arranged in the middle of the movable block (701) and the fixed block (702) in a penetrating mode, one end of the shaft (703) is fixed to a fixed end (704) at one end of the fixed block (702), the other end of the shaft (703) is inserted into a positioning hole (605), a first spring (7010) is installed on the shaft (703) between the movable block (701) and the fixed block (702), and the movable block (701) can move back and forth in the fixed block (702) along the shaft (703).

4. The bottomless adjustable reclining swivel chair of claim 3, wherein: one end of the movable block (701) is provided with a sliding groove (7017), a baffle (7018) is arranged in the sliding groove (7017), a sliding positioning tooth (7011) is sleeved on a shaft (703) between the baffle (7018) and the end of the sliding groove (7017), and a second spring (7012) and a third spring (7013) are respectively installed on the shafts (703) at the two ends of the sliding positioning tooth (7011).

5. The bottomless adjustable reclining swivel chair of claim 4, wherein: the upper end of the other end of the movable block (701) is provided with a circulation positioning groove (7019), the circulation positioning groove (7019) is of a step circulation structure, one end of the circulation positioning groove (7019) is an unlocking end (7021), the other end of the circulation positioning groove (7020) is a locking end, a positioning rod (705) is installed in the circulation positioning groove (7019), the positioning rod (705) is inverted U-shaped, one end of the positioning rod (705) is arranged in the circulation positioning groove (7019), the other end of the positioning rod (705) is inserted into a fixing end (704), a positioning hole (7015) for inserting the positioning rod (705) is formed in the fixing end (704), a clamp spring (706) matched with the fixing end (704) is arranged above the positioning rod (705), and a second notch (7016) matched with the positioning rod (705) is formed in the fixing block.

6. The bottomless adjustable reclining swivel chair of claim 5, wherein: the lower extreme of the other end of movable block (701) is equipped with interior wire casing pilot hole (709), fixed mounting has acting as go-between (10) in interior wire casing pilot hole (709), the other end of acting as go-between (10) is worn to establish and is connected with plectrum (501) of handrail (5) tip behind interior hollow handrail (5), fixed block (702) be equipped with interior wire casing pilot hole (709) assorted outer wire casing (708).

7. The bottomless adjustable reclining swivel chair of claim 6, wherein: the pull wire (10) is fixed on the fixing block (702) through a fixing adjusting nut (707).

8. The bottomless adjustable reclining swivel chair of claim 7, wherein: and a fixed positioning tooth (303) is arranged on the second connecting piece (302), and the fixed positioning tooth (303) is meshed with the sliding positioning tooth (7011).

9. The bottomless adjustable reclining swivel chair of claim 4, wherein: a sleeve (7014) is arranged between the sliding positioning teeth (7011) and the shaft (703).

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