CN109567465B - Swivel chair convenient to adjust - Google Patents
Swivel chair convenient to adjust Download PDFInfo
- Publication number
- CN109567465B CN109567465B CN201811548653.8A CN201811548653A CN109567465B CN 109567465 B CN109567465 B CN 109567465B CN 201811548653 A CN201811548653 A CN 201811548653A CN 109567465 B CN109567465 B CN 109567465B
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- swivel chair
- handrail
- type swing
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/54—Supports for the arms
- A47C7/546—Supports for the arms of detachable type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
Landscapes
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention relates to a swivel chair convenient to adjust. It solves the technical problems of unreasonable design and the like in the prior art. This swivel chair convenient to adjust includes swivel chair stabilizer blade and connects the seat base on the swivel chair stabilizer blade, be connected with the back on the seat base and be located the handrail of seat base both sides, be equipped with the upper end at the back downside and upwards stretch into the back backup pad at back middle part, the back backup pad is connected with the waist through elastic locking mechanism and leans on, the handrail includes vertical support, be equipped with arc breach and part respectively in the upper end both sides of vertical support and be located the arc breach and rotate the cantilever type swing arm of being connected with arc breach, this handrail still is equipped with the bar hole including being located the handrail board on two cantilever type swing arms, be equipped with at the central zone of handrail board, at the upper surface suspension end of every cantilever type swing arm be equipped with insert in the spliced pole in the bar hole. The invention has the advantages that: the application range can be further enlarged.
Description
Technical Field
The invention belongs to the technical field of chairs, and particularly relates to a swivel chair convenient to adjust.
Background
Chairs, including swivel chairs and stationary chairs.
While the structure of a chair generally includes: the seat cushion comprises support legs, a seat cushion connected to the support legs and a backrest support connected to the seat cushion or the support legs, wherein the backrest support is provided with a backrest and a lumbar support, and the seat cushion is provided with armrests.
The handrail is locked by a plurality of bolts, and the handrail is firmly connected, but the handrail has the following defects:
the applicable crowd performance is relatively poor, namely can't adjust the width between two armrests to and the regulation of front and back position, and the waist is leaned on the position on the vertical direction can't be adjusted, and the practicality is relatively poor.
Disclosure of Invention
The invention aims to solve the problems and provide a swivel chair which can further expand the application range and has stronger practicability and is convenient to adjust.
In order to achieve the above purpose, the present invention adopts the following technical scheme: this swivel chair convenient to adjust includes swivel chair stabilizer blade and connects the seat base on the swivel chair stabilizer blade, is connected with the back and is located the handrail of seat base both sides on the seat base, is equipped with the upper end at the back downside and upwards stretches into the back backup pad at back middle part, the back backup pad be connected with the waist through elastic locking mechanism and lean on, the handrail includes vertical support, be equipped with arc breach and part in the arc breach respectively and rotate the cantilever type swing arm of being connected with arc breach in vertical support's upper end both sides, this handrail still includes the handrail board that is located two cantilever type swing arms, be equipped with the bar hole in the central zone of handrail board, be equipped with at the upper surface suspension end of every cantilever type swing arm insert in the spliced pole in the bar hole, be equipped with the direction slider of being connected with the spliced pole rotation in the upper end of spliced pole, the direction slider arrange the restriction frame of handrail board upper surface in, this handrail still includes the handrail apron on the handrail board, the direction slider be located between handrail apron and the handrail board.
The cantilever type swing arm can realize that the two ends of the armrest plate can swing under the action of external force, namely, the width between the two armrest plates can be adjusted, so that people with different body types can enter the chair and sit down.
The connecting column cooperates with the guide sliding block, can slide along the length direction of the handrail plate, and can slidingly adjust the relative position, so that the use requirements of more people can be met.
The restriction frame is a rectangular frame that can avoid excessive forward or backward movement.
The arc notch can avoid interference, and meanwhile, the smoothness and stability of the swing of the cantilever type swing arm can be further improved.
The elastic locking mechanism is convenient for locking and unlocking operation.
In the swivel chair convenient to adjust, cantilever type swing arm width inwards enlarges gradually from the suspension end of cantilever type swing arm, is equipped with little arc convex surface in the suspension end outside of cantilever type swing arm, is equipped with big arc convex surface in the inner of cantilever type swing arm, big arc convex surface and the arc concave surface body of arc breach mutually support.
The cantilever type swing arm is in a water drop shape.
In the swivel chair convenient to adjust, the inner end of the upper surface of the cantilever type swing arm is provided with a stepped hole and a rotating shaft inserted in the stepped hole, and the lower end of the rotating shaft is rotationally connected with the arc notch.
The rotating shaft is rotationally connected with the stepped hole, and the rotating shaft is rotationally connected with the guide sliding block.
And two ends of the rotating shaft are respectively provided with a snap spring for preventing falling off.
In the swivel chair convenient to adjust, the two sides of the top of the vertical support are respectively provided with an arc limiting block used for limiting the rotation angle of the cantilever type swing arm.
The arc-shaped limiting block plays a role of strengthening and limiting.
In the swivel chair convenient to adjust, the two ends of the arc limiting block are respectively provided with arc limiting concave surfaces which are coincided with the circle centers of the arc notches.
The structure can avoid biting the periphery of the cantilever type swing arm.
In the swivel chair convenient to adjust, the periphery of the armrest cover plate is provided with a turnup which is turned down and an L-shaped pressed shoulder connected to the turnup, an intermediate pressing plate which is pressed on the L-shaped pressed shoulder is arranged in the turnup, and the intermediate pressing plate is connected to the armrest plate through a detachable structure.
The device can be conveniently installed and fixed, and the complex whole structure and the like caused by repeated connection and fixation are avoided.
The detachable structure comprises a plurality of fasteners penetrating through the middle pressing plate, and a plurality of threaded holes for the fasteners to be inserted one by one and in threaded connection with the fasteners are formed in the handrail plate.
In the swivel chair convenient to adjust, the lower surface of the middle pressing plate is provided with the inner reinforcing ring, and the inner reinforcing ring is positioned on the inner side of the L-shaped pressed shoulder.
The connection strength can be improved and the structural strength of the self-body can be enhanced.
In the swivel chair convenient to adjust, the circumference of the upper surface of the armrest plate is provided with the annular groove, the vertical part of the L-shaped pressed shoulder and the inner reinforcing ring extend into the annular groove, the limiting frame is positioned at the inner side of the annular groove, and the strip-shaped hole is positioned at the inner side of the limiting frame.
The structure can further improve the stability of the whole structure.
In the swivel chair convenient to adjust, the upper surface of the armrest plate is provided with the outer reinforcing frame, the periphery of the upper surface of the armrest plate is provided with the protruding part, the annular groove is formed between the protruding part and the outer reinforcing frame, and the reinforcing structure is arranged between the outer reinforcing frame and the limiting frame.
The reinforcing structure comprises a plurality of reinforcing ribs.
In the swivel chair convenient to adjust, the guide sliding block is a square sliding block.
In the swivel chair convenient to adjust, the elastic locking mechanism including set up in the waist type hole of back backup pad upper portion, be equipped with at the back of back backup pad with waist type hole intercommunication's counter bore, this mechanism still including being located the position adjustment movable block of counter bore, the lower extreme that position adjustment movable block and waist leaned on between connect through the connecting piece that runs through waist type hole, the left and right sides that position adjustment movable block was equipped with elastic locking convex part respectively, be equipped with at the pore wall of counter bore or the hole bottom of counter bore with elastic locking convex part one-to-one meshing's locking rack.
The counter bore is rectangular hole and the middle upper portion of the two long sides of rectangular hole has inwards protruding, and locking rack distributes along the two long sides of rectangular hole.
The position adjusting moving block can move along the waist-shaped hole, so that the application range is enlarged, the adjusting convenience is further improved, the elastic locking convex part and the locking rack are cooperated, the waist can be locked in the vertical direction, and free lifting displacement is avoided.
In the swivel chair convenient to adjust, the elastic locking convex part comprises elastic cantilever parts respectively connected with two ends of the corresponding side edges of the position adjusting moving block, the suspended ends of the elastic cantilever parts are oppositely prolonged and are connected together through V-shaped parts, and the V-shaped parts are meshed with the locking racks to force the suspended ends of the elastic cantilever parts to approach the side edges of the position adjusting moving block.
The position adjusting moving block, the elastic cantilever part and the V-shaped part are integrally molded by plastic injection.
In the swivel chair convenient to adjust, the two elastic cantilever parts arranged on the corresponding side edges of the position adjusting moving block are symmetrically arranged.
The symmetrical structure can be convenient to process and manufacture, and meanwhile, the stability and smoothness of position adjustment can be ensured.
In the swivel chair convenient to adjust, the locking racks are symmetrically arranged through the waist-shaped holes.
Symmetrical construction which can be easily machined and manufactured.
In the swivel chair convenient to adjust, the locking rack is L-shaped and fixed at the bottom of the hole of the counter bore.
In the swivel chair convenient to adjust, be equipped with a plurality of interior doglegs respectively on two locking racks's the side that faces inwards mutually, the top of every interior dogleg has arc convex surface one respectively, connects through the arc concave surface between two adjacent interior doglegs, be equipped with at the top of V-arrangement portion with arc concave surface matched arc convex surface two.
The structure can realize locking and cancel the locking, and is convenient to operate and labor-saving.
In the swivel chair convenient to adjust, limiting protrusions are respectively arranged at two ends of the inner side face of each locking rack, and the height of each limiting protrusion is higher than that of each inner convex tooth.
The limiting protrusion plays a limiting role, and excessive opposite detachment or downward detachment is avoided.
In the swivel chair convenient to adjust, the outer side face of the locking rack is provided with the arc-shaped convex faces III which are in one-to-one correspondence with the arc-shaped concave faces.
The structure can play a good external reinforcing role, is convenient to process and manufacture, and further saves materials.
In the swivel chair convenient to adjust, two connecting pieces are arranged at intervals.
The connecting piece is of a cylindrical T-shaped structure.
The position adjusting moving block is provided with a first fixing hole for inserting a connecting piece, the lower end of the waist rest is provided with a second fixing hole for inserting the connecting piece, the connecting piece is inserted into the first fixing hole and penetrates through the waist-shaped hole and then is inserted into the second fixing hole, one end part of the connecting piece inserted into the second fixing hole extends to one side of a human body, the end part of the connecting piece is provided with a clamp spring, and a nut which is in threaded connection with the connecting piece and is propped against the clamp spring.
In the swivel chair convenient to adjust, the mechanism further comprises a sealing cover plate for sealing the counter bore hole, and the counter bore and the sealing cover plate are connected through a detachable connecting structure.
The detachable connecting structure comprises a plurality of communicating holes which are arranged on the rear supporting plate and communicated with the counter bores, a plurality of connecting columns which are inserted into the communicating holes one by one are arranged on one surface of the closed cover plate, which is close to the human body, and locking nuts are arranged at one ends of the connecting columns, which are inserted into the communicating holes, and are in contact with one surface of the rear supporting plate, which is close to the human body.
Compared with the prior art, the swivel chair convenient to adjust has the advantages that:
1. the cantilever type swing arm can realize that the two ends of the armrest plate can swing under the action of external force, namely, the width between the two armrest plates can be adjusted, so that people with different body types can enter the chair and sit down.
2. The connecting column cooperates with the guide sliding block, can slide along the length direction of the handrail plate, and can slidingly adjust the relative position, so that the use requirements of more people can be met.
3. Simple structure and easy processing and manufacturing.
4. The position adjusting moving block can move along the waist-shaped hole, so that the application range is enlarged, the adjusting convenience is further improved, the elastic locking convex part and the locking rack are cooperated, the waist can be locked in the vertical direction, and free lifting displacement is avoided.
Drawings
Fig. 1 is a schematic view of the structure provided by the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic view of another cross-sectional view structure according to the present invention.
Fig. 4 is a schematic structural view of the present invention after removing the cover plate of the armrest.
Fig. 5 is a schematic view of the structure of the present invention after the intermediate pressing plate is removed.
Fig. 6 is a schematic view of the structure of the invention after the armrest plate is removed.
Fig. 7 is a schematic view of the structure provided by the present invention.
Fig. 8 is a schematic view of the structure of the present invention after removing the cover plate.
Fig. 9 is an enlarged schematic view of the structure at a in fig. 8.
Fig. 10 is a schematic view showing a state in which a position adjusting moving block and a locking rack are engaged.
Fig. 11 is a schematic view of the lumbar support structure provided by the present invention.
In the figure, a vertical support a1, an arc notch a11, an arc concave body a111, an arc limiting block a12, a cantilever swing arm a2, a connecting column a21, a guide slide block a22, a limiting frame a23, a small arc convex surface a24, a large arc convex surface a25, a stepped hole a26, a rotating shaft a27, a handrail plate a3, a strip-shaped hole a31, an annular groove a32, an outer reinforcing frame a33, a protruding part a34, a handrail cover plate a4, a flanging a41, an L-shaped pressed shoulder a42, an intermediate pressing plate a43, an inner reinforcing ring a44, a lumbar support 1, a rear supporting plate 2, a lumbar hole 21, a counter bore 22, a position adjusting moving block 3, an elastic locking protruding part 31, an elastic cantilever part 311, a V-shaped part 312, an arc convex surface second 313, a connecting piece 4, a locking rack 5, an inner convex tooth 51, an arc convex surface first 52, an arc concave surface 53, a limiting protruding part 54, an arc convex surface third 55 and a closing cover plate 6.
Detailed Description
The following are specific embodiments of the invention and the technical solutions of the invention will be further described with reference to the accompanying drawings, but the invention is not limited to these embodiments.
As shown in figures 1 and 7-11,
The swivel chair convenient to adjust includes swivel chair stabilizer blade 10 and connects seat base 20 on swivel chair stabilizer blade 10, is connected with back 30 and the handrail that is located seat base 20 both sides on seat base 20, is equipped with back backup pad 2 that the upper end upwards stretches into to back 30 middle part at back 30 downside, back backup pad 2 be connected with waist through elasticity locking mechanism and lean on 1.
The swivel chair leg 10 is a leg to which five universal wheels are connected.
The seat base 20 is mounted with a seat plate or cushion.
A headrest 40 is attached to the top of the backrest 30.
The lumbar support 1 includes an arc-shaped block contacting the lumbar and a rectangular block connected to the lower side of the arc-shaped block, and the rear support plate 2 is connected to the seat base 20 of the chair.
Specifically, the elastic locking mechanism of the embodiment comprises a waist-shaped hole 21 arranged at the middle upper part of the rear supporting plate 2, a counter bore 22 communicated with the waist-shaped hole 21 is arranged on the back surface of the rear supporting plate 2, the mechanism further comprises a position adjusting moving block 3 positioned in the counter bore 22 and a sealing cover plate 6 for sealing the orifice of the counter bore 22, and the counter bore 22 and the sealing cover plate 6 are connected through a detachable connecting structure.
The lower ends of the position adjusting moving block 3 and the waist rest 1 are connected through a connecting piece 4 penetrating through a waist-shaped hole 21, the connecting piece 4 is of a cylindrical T-shaped structure, elastic locking convex parts 31 are respectively arranged on the left side and the right side of the position adjusting moving block 3, and locking racks 5 meshed with the elastic locking convex parts 31 one by one are arranged on the hole wall of the counter bore 22 or the hole bottom of the counter bore 22.
Specifically, the elastic locking protrusion 31 of the present embodiment includes elastic cantilever portions 311 respectively connected to both ends of the corresponding side edge of the position adjustment moving block 3, the cantilever ends of the elastic cantilever portions 311 are extended toward each other and the cantilever ends are connected together by V-shaped portions 312, and the V-shaped portions 312 force the cantilever ends of the elastic cantilever portions 311 to approach the side edge of the position adjustment moving block 3 after meshing with the locking rack 5.
The two elastic cantilever portions 311 provided on the corresponding sides of the position adjusting moving block 3 are symmetrically provided.
The locking racks 5 are symmetrically arranged through waist-shaped holes 21.
The locking rack 5 is L-shaped and is fixed at the bottom of the hole of the counter bore 22.
A plurality of inner convex teeth 51 are respectively arranged on the opposite inner side surfaces of the two locking racks 5, the top of each inner convex tooth 51 is respectively provided with an arc convex surface I52, two adjacent inner convex teeth 51 are connected through an arc concave surface 53, and an arc convex surface II 313 matched with the arc concave surface 53 is arranged on the top of the V-shaped part 312.
Limiting protrusions 54 are respectively arranged at two ends of the inner side face of each locking rack 5, and the protruding height of each limiting protrusion 54 is higher than that of each inner protruding tooth 51.
An arc-shaped convex surface III 55 which is in one-to-one correspondence with the arc-shaped concave surfaces 53 is arranged on the outer side surface of the locking rack 5.
The number of the connecting pieces 4 is two and the connecting pieces are arranged at intervals.
The adjustment process of this embodiment is as follows:
the upper part of the lumbar support 1 is manually held, and then an axial force is applied upwards or downwards, and when the elastic locking convex parts 31 are applied with the force, the elastic locking convex parts pass through the locking racks 5 one by one upwards or downwards, and the V-shaped parts 312 are forced to move outwards under the action of the elastic force of the elastic cantilever parts 311, namely, the V-shaped parts and the inner core of the locking racks 5, so that the locking and the unlocking are realized, and a user can reach the required lumbar support height.
As shown in figures 1-6 of the drawings,
The armrest comprises a vertical support a1, and the vertical support a1 is sleeved on fixed extension columns at two sides of the seat base 20.
The two sides of the upper end of the vertical support a1 are respectively provided with an arc gap a11 and a cantilever type swing arm a2 which is partially positioned in the arc gap a11 and is rotationally connected with the arc gap a11, the handrail also comprises a handrail plate a3 positioned on the two cantilever type swing arms a2, a strip-shaped hole a31 is formed in the central area of the handrail plate a3, a connecting column a21 inserted into the strip-shaped hole a31 is arranged at the suspension end of the upper surface of each cantilever type swing arm a2, a guide slide block a22 rotationally connected with the connecting column a21 is arranged at the upper end of the connecting column a21, and the guide slide block a22 is a square slide block. The guide slide block a22 is arranged in a limiting frame a23 on the upper surface of the handrail plate a3, the handrail further comprises a handrail cover plate a4 fixed on the handrail plate a3, and the guide slide block a22 is arranged between the handrail cover plate a4 and the handrail plate a 3.
According to the optimization scheme, the width of the cantilever type swing arm a2 of the embodiment is gradually enlarged inwards from the suspension end of the cantilever type swing arm a2, a small arc-shaped convex surface a24 is arranged on the outer side of the suspension end of the cantilever type swing arm a2, a large arc-shaped convex surface a25 is arranged at the inner end of the cantilever type swing arm a2, and the large arc-shaped convex surface a25 is matched with an arc-shaped concave surface a111 of an arc-shaped notch a 11.
The inner end of the upper surface of the cantilever type swing arm a2 is provided with a stepped hole a26 and a rotating shaft a27 inserted into the stepped hole a26, and the lower end of the rotating shaft a27 is rotationally connected or fixedly connected with the arc-shaped notch a 11.
The upper end of the rotating shaft a27 is sleeved with an upper clamping spring, and the clamping spring is contacted with any step surface of the stepped hole a 26.
Arc-shaped limiting blocks a12 for limiting the rotation angle of the cantilever type swing arm a2 are respectively arranged on two sides of the top of the vertical support a 1. And secondly, arc limiting concave surfaces which are coincident with the circle centers of the arc notches a11 are respectively arranged at two ends of the arc limiting block a12.
The periphery of the handrail cover plate a4 is provided with a turnup a41 which is turned down and an L-shaped pressed shoulder a42 which is connected with the turnup a41, an intermediate pressing plate a43 which presses on the L-shaped pressed shoulder a42 is arranged in the turnup a41, and the intermediate pressing plate a43 is connected with the handrail plate a3 through a detachable structure.
An inner reinforcing ring a44 is arranged on the lower surface of the middle pressing plate a43, and the inner reinforcing ring a44 is positioned on the inner side of the L-shaped pressed shoulder a 42.
An annular groove a32 is arranged on the periphery of the upper surface of the handrail plate a3, the vertical part of the L-shaped pressed shoulder a42 and the inner reinforcing ring a44 extend into the annular groove a32, the limiting frame a23 is positioned on the inner side of the annular groove a32, and the strip-shaped hole a31 is positioned on the inner side of the limiting frame a 23.
An outer reinforcing frame a33 is provided on the upper surface of the handrail plate a3, a boss a34 is provided on the periphery of the upper surface of the handrail plate a3, the annular groove a32 is formed between the boss a34 and the outer reinforcing frame a33, and a reinforcing structure is provided between the outer reinforcing frame a33 and the restricting frame a 23. The reinforcing structure includes a plurality of reinforcing ribs connected between the outer reinforcing frame a33 and the limiting frame a 23.
In the present embodiment
The handrail cover plate a4 can swing at two ends under the action of external force, the swinging angle is smaller than 90 degrees, and the handrail cover plate can slide back and forth to adjust the position of the handrail in real time.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The swivel chair convenient to adjust comprises swivel chair support legs (10) and seat bases (20) connected to the swivel chair support legs (10), a backrest (30) and armrests positioned on two sides of the seat bases (20) are connected to the seat bases (20), and the swivel chair is characterized in that rear support plates (2) with upper ends extending upwards into the middle of the backrest (30) are arranged on the lower sides of the backrest (30), waist supports (1) are connected to the rear support plates (2) through elastic locking mechanisms, the elastic locking mechanisms comprise waist-shaped holes (21) arranged on the middle upper portions of the rear support plates (2), counter holes (22) communicated with the waist-shaped holes (21) are formed in the back surfaces of the rear support plates (2), position adjusting moving blocks (3) and the lower ends of the waist supports (1) are connected through connecting pieces (4) penetrating through the waist-shaped holes (21), elastic locking convex portions (31) are respectively arranged on the left side and the right side of each position adjusting moving block (3), or the back surfaces of the back support plates (2) are provided with elastic locking convex portions (21), and the elastic locking racks (5) are arranged in the shape of the counter holes (22) and are engaged with the counter holes (5);
The handrail comprises a vertical support (a 1), arc-shaped gaps (a 11) and cantilever type swing arms (a 2) which are partially positioned in the arc-shaped gaps (a 11) and are rotationally connected with the arc-shaped gaps (a 11) are respectively arranged on two sides of the upper end of the vertical support (a 1), the handrail further comprises a handrail plate (a 3) positioned on the two cantilever type swing arms (a 2), strip-shaped holes (a 31) are formed in the central area of the handrail plate (a 3), connecting columns (a 21) inserted into the strip-shaped holes (a 31) are arranged at the suspension ends of the upper surface of each cantilever type swing arm (a 2), guide sliding blocks (a 22) which are rotationally connected with the connecting columns (a 21) are arranged at the upper ends of the connecting columns (a 21), the guide sliding blocks (a 22) are arranged in limiting frames (a 23) on the upper surface of the handrail plate (a 3), and the handrail further comprises handrail cover plates (a 4) fixed on the handrail plate (a 3).
2. The swivel chair according to claim 1, wherein the width of the cantilever type swing arm (a 2) is gradually enlarged inwards from the free end of the cantilever type swing arm (a 2), a small arc-shaped convex surface (a 24) is arranged at the outer side of the free end of the cantilever type swing arm (a 2), a large arc-shaped convex surface (a 25) is arranged at the inner end of the cantilever type swing arm (a 2), and the large arc-shaped convex surface (a 25) is matched with the arc-shaped concave surface (a 111) of the arc-shaped notch (a 11).
3. The swivel chair according to claim 2, wherein the two sides of the top of the vertical support (a 1) are respectively provided with an arc-shaped limiting block (a 12) for limiting the rotation angle of the cantilever type swing arm (a 2).
4. The swivel chair according to claim 1, wherein the periphery of the armrest cover plate (a 4) is provided with a turnup (a 41) which is turned downwards, and an L-shaped pressed shoulder (a 42) connected to the turnup (a 41), an intermediate pressing plate (a 43) which presses on the L-shaped pressed shoulder (a 42) is arranged in the turnup (a 41), and the intermediate pressing plate (a 43) is connected to the armrest plate (a 3) through a detachable structure.
5. The swivel chair according to claim 4, wherein the lower surface of the intermediate pressure plate (a 43) is provided with an inner reinforcing ring (a 44), and the inner reinforcing ring (a 44) is located inside the L-shaped pressed shoulder (a 42).
6. The swivel chair according to claim 5, wherein the upper surface periphery of the armrest plate (a 3) is provided with an annular groove (a 32), the vertical part of the L-shaped pressed shoulder (a 42) and the inner reinforcing ring (a 44) extend into the annular groove (a 32), the limiting frame (a 23) is positioned inside the annular groove (a 32), and the bar-shaped hole (a 31) is positioned inside the limiting frame (a 23).
7. The swivel chair according to claim 1, wherein the elastic locking protrusion (31) comprises elastic cantilever portions (311) respectively connected to two ends of the corresponding side of the position adjusting moving block (3), the cantilever ends of the elastic cantilever portions (311) are extended in opposite directions and connected together through V-shaped portions (312), and the V-shaped portions (312) are meshed with the locking racks (5) to force the cantilever ends of the elastic cantilever portions (311) to approach the side of the position adjusting moving block (3).
8. The swivel chair according to claim 7, wherein a plurality of inner convex teeth (51) are respectively arranged on opposite inner side surfaces of the two locking racks (5), an arc convex surface I (52) is respectively arranged at the top of each inner convex tooth (51), two adjacent inner convex teeth (51) are connected through an arc concave surface (53), and an arc convex surface II (313) matched with the arc concave surface (53) is arranged at the top of the V-shaped part (312).
9. The swivel chair convenient to adjust according to claim 8, wherein limiting protrusions (54) are respectively arranged at two ends of the inner side surface of each locking rack (5), and the protrusion height of each limiting protrusion (54) is higher than that of each inner convex tooth (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548653.8A CN109567465B (en) | 2018-12-18 | 2018-12-18 | Swivel chair convenient to adjust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811548653.8A CN109567465B (en) | 2018-12-18 | 2018-12-18 | Swivel chair convenient to adjust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109567465A CN109567465A (en) | 2019-04-05 |
| CN109567465B true CN109567465B (en) | 2024-05-07 |
Family
ID=65929907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811548653.8A Active CN109567465B (en) | 2018-12-18 | 2018-12-18 | Swivel chair convenient to adjust |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109497752A (en) * | 2018-12-18 | 2019-03-22 | 浙江粤强家具科技有限公司 | The adjustable armrests in position |
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| CN108968466A (en) * | 2018-09-27 | 2018-12-11 | 浙江粤强家具科技有限公司 | Swivel chair |
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| JPH11155681A (en) * | 1997-11-30 | 1999-06-15 | Itoki Crebio Corp | Armrest device of chair |
| CN2517315Y (en) * | 2001-10-10 | 2002-10-23 | 泰桦家具股份有限公司 | Movable armrest and cushion of chair |
| TWM278315U (en) * | 2005-06-13 | 2005-10-21 | Tz-Chiang Wang | Chair armrest |
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