CN109864483B - Swivel chair and telescopic leg support mechanism thereof - Google Patents
Swivel chair and telescopic leg support mechanism thereof Download PDFInfo
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- CN109864483B CN109864483B CN201910177374.3A CN201910177374A CN109864483B CN 109864483 B CN109864483 B CN 109864483B CN 201910177374 A CN201910177374 A CN 201910177374A CN 109864483 B CN109864483 B CN 109864483B
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- 230000001105 regulatory effect Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention relates to a telescopic leg support mechanism of a swivel chair. It has solved the problem that prior art is with high costs. This telescopic shank supporting mechanism of swivel chair is located the seat below, this mechanism is including fixing the fixed slide at the seat lower surface, and with fixed slide horizontal sliding connection's slip regulating plate, be equipped with back limit structure and back limit structure at the rear end of slip regulating plate and be used for preventing that the slip regulating plate from excessively breaking away from fixed slide forward, the front end cover at slip regulating plate is equipped with preceding stop collar, and the preceding limit pin of setting at slip regulating plate front end just limit collar front side in front, the front side of limit collar articulates there is shank support hanger plate in front, be equipped with extension spring and extension spring between the lower surface of shank support hanger plate and preceding stop collar and force shank support hanger plate to draw in at the lower surface of slip regulating plate. The invention has the advantages that: low cost and simple structure.
Description
Technical Field
The invention belongs to the technical field of swivel chairs, and particularly relates to a swivel chair and a telescopic leg supporting mechanism thereof.
Background
Swivel chairs for use in resting or working of people.
In order to improve the comfort of swivel chairs, some swivel chairs are provided with leg support plates, the traditional support plates are directly hinged to the front sides of the swivel chairs, and when the swivel chairs are needed to be used, the legs can be supported after the support plates are turned over.
Although the above-mentioned scheme has many advantages, the above-mentioned scheme cannot be applied to different people, that is, the position of the support plate cannot be adjusted according to the length of the leg, and the practicality is reduced.
For this purpose, for example, chinese patent discloses a support device for a multifunctional swivel chair, application number: 201720472053.2, mainly in the field of chair fittings. Including hollow supporting shell, wear to establish the bracing piece in the supporting shell, establish the layer board that suits with the head above the bracing piece, set for the locating hole on the bracing piece, the locating hole includes last jack and the lower jack that sets gradually from top to bottom along the bracing piece, go up jack and lower jack homoenergetic and expose outside the supporting shell, still include the location inserted bar that suits with the locating hole, the backup pad is established to the supporting shell bottom, fang Shere dry open-ended decurrent U type runner support under the backup pad, runner support annular array arranges, the runner that suits with the swivel chair wheel is connected in the rotation on the runner support. The scheme has the beneficial effects that: can the person of facilitating the use rely on the swivel chair back, place the head on strutting arrangement, support the head, enlarge area of support, the user can relax the rest, improves the rest quality, can also adjust down the height and place in swivel chair the place ahead, make things convenient for the rest of relaxing of people's shank.
The scheme has the advantages of complex structure and high production cost.
Disclosure of Invention
The invention aims to solve the problems and provide the telescopic leg support mechanism of the swivel chair, which has simple structure, low cost and convenient adjustment.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the telescopic leg supporting mechanism of the swivel chair is located below a seat plate and comprises a fixed sliding seat fixed on the lower surface of the seat plate and a sliding adjusting plate horizontally and slidably connected with the fixed sliding seat, a rear limiting structure is arranged at the rear end of the sliding adjusting plate and used for preventing the sliding adjusting plate from being excessively separated from the fixed sliding seat forwards, a front limiting sleeve is sleeved at the front end of the sliding adjusting plate, a front limiting pin arranged at the front end of the sliding adjusting plate and used for blocking the front side of the front limiting sleeve, a leg supporting hanging plate is hinged to the front side of the front limiting sleeve, a tension spring is arranged between the lower surface of the leg supporting hanging plate and the front limiting sleeve and used for forcing the leg supporting hanging plate to be folded on the lower surface of the sliding adjusting plate, and the front limiting sleeve moves along the rear end of the sliding adjusting plate and can force the leg supporting hanging plate to swing upwards anticlockwise and the lower surface of the leg supporting hanging plate is contacted with the upper surface of the sliding adjusting plate.
The rear limit structure includes a rear limit pin.
The fixed sliding seat is connected with the seat plate by a plurality of bolts.
The rear side of the leg support cantilever plate is provided with a notch, two sides of the front end of the front limiting sleeve are respectively provided with an outwardly extending pin shaft cylinder, each pin shaft cylinder is respectively provided with a pin in a penetrating manner, and the pins are inserted into pin holes at two sides of the notch, namely, the pins are in hinged connection.
Fixed slide and with fixed slide sliding connection's slip regulating plate, it can set up different length according to different crowds, not only simple structure, but also further improved the practicality, simultaneously, be convenient for adjust and the cost is lower.
The tension springs can fold the leg support hanging plates, and free swing of the leg support hanging plates after folding is avoided.
In the telescopic leg supporting mechanism of the swivel chair, the fixed sliding seat is in a block shape, the lower side of the fixed sliding seat is provided with the connecting sliding groove which is arranged along the front-rear direction of the fixed sliding seat, the notch of the connecting sliding groove faces downwards, the caliber of the notch of the connecting sliding groove is smaller than the width of the bottom of the connecting sliding groove, and the sliding adjusting plate is inserted into the connecting sliding groove, and the width of the sliding adjusting plate is equal to the caliber of the notch of the connecting sliding groove.
The structure can enhance the elastic performance of the structure, can be convenient to assemble and disassemble, and can prevent the caliber of the notch from falling off.
In the telescopic leg supporting mechanism of the swivel chair, two sides of the connecting chute notch are provided with limiting convex parts which extend in opposite directions, and the connecting chute notch is formed between the two limiting convex parts.
Which can improve the overall structural strength.
In the telescopic leg supporting mechanism of the swivel chair, a plurality of protrusions I are respectively arranged on two sides of the bottom of the connecting chute along the length direction of the connecting chute, protrusions II which are in one-to-one correspondence with the protrusions I are arranged on one surface of each limiting protrusion close to the bottom of the connecting chute, and the sliding adjusting plate is in sliding contact with the protrusions I and the protrusions II.
The structure can play a role in structural reinforcement and improving sliding smoothness, because the contact area is reduced.
In the telescopic leg supporting mechanism of the swivel chair, the bottom of the connecting chute is provided with a groove body corresponding to the notch of the connecting chute.
The structure can facilitate demolding and save materials.
In the telescopic leg supporting mechanism of the swivel chair, the inner wall of the front limiting sleeve is provided with a third protrusion arranged along the length direction of the front limiting sleeve, and the sliding adjusting plate is in sliding contact with the third protrusion.
There is the rectangular hole in the preceding stop collar, is equipped with a plurality of protruding third that set up along rectangular hole length direction on the last pore wall of rectangular hole and the pore wall down, and protruding third that sets up on the pore wall and protruding third one-to-one setting on the pore wall down.
In the telescopic leg supporting mechanism of the swivel chair, an arc limiting notch for accommodating a front limiting pin is formed in the middle of the front side of the front limiting sleeve; the front side of the lower surface of the front limiting sleeve is provided with a lower convex column, and the leg support hanging plate is contacted with the lower end of the lower convex column after being folded.
The arcuate limiting recess enlarges the contact area and at the same time avoids damage due to mutual impact.
In the telescopic leg support mechanism of the swivel chair, a tension spring column is arranged on the lower surface of the leg support cantilever plate, one end of the tension spring is connected to the tension spring column, the other end of the tension spring is connected to the front limiting pin, and the front limiting pin and the tension spring column are in a straight line.
The structure can facilitate the installation and fixation of the tension spring.
In the telescopic leg supporting mechanism of the swivel chair, the lower surface of the leg supporting suspending plate is provided with the U-shaped limiting plate, the opening of the U-shaped limiting plate faces the front limiting sleeve, at least one guide plate is connected to the inner middle part of the U-shaped limiting frame, the width of the guide plate is smaller than that of the U-shaped limiting plate, and when the lower surface of the leg supporting suspending plate is in contact with the upper surface of the sliding adjusting plate, the front end of the leg supporting suspending plate stretches into the U-shaped limiting plate, and the upper surface of the leg supporting suspending plate is in contact with the guide plate.
The U-shaped limiting plate can prevent the leg support cantilever plate from excessively moving towards the rear end of the sliding adjusting plate.
The swivel chair is manufactured according to the telescopic leg support mechanism of the swivel chair.
Compared with the prior art, the telescopic leg support mechanism of the swivel chair has the advantages that:
1. fixed slide and with fixed slide sliding connection's slip regulating plate, it can set up different length according to different crowds, not only simple structure, but also further improved the practicality, simultaneously, be convenient for adjust and the cost is lower.
2. Is convenient for popularization and application.
Drawings
Fig. 1 is a schematic view of a leg support suspension board according to the present invention in a folded state.
Fig. 2 is a schematic side-elevation view of the structure of fig. 1.
Fig. 3 is a schematic structural view of a supporting mechanism provided by the invention.
Fig. 4 is a schematic view of a leg support cantilever plate in a flattened state.
Fig. 5 is a schematic structural view of a fixed carriage according to the present invention.
Fig. 6 is a schematic view of a connection structure of a front stop collar and a leg support suspension plate provided by the invention.
Fig. 7 is a schematic view of a swivel chair according to the present invention.
FIG. 8 is a schematic view of the structure of the present invention with the support leg assembly removed
Fig. 9 is a schematic view of the structure of the invention with the seat and back removed.
Fig. 10 is a schematic view of the structure of fig. 9 with the front linkage frame removed.
Fig. 11 is a schematic view of a locking structure of a connecting arm according to the present invention.
Fig. 12 is a schematic view of a swing frame according to the present invention.
In the figure, a seat plate a1, a fixed slide seat a2, a connecting chute a21, a limiting convex part a22, a first protrusion a23, a second protrusion a24, a groove body a25, a sliding adjusting plate a3, a front limiting pin a31, a rear limiting structure a32, a front limiting sleeve a4, a third protrusion a41, an arc limiting notch a42, a lower convex column a43, a leg supporting cantilever plate a5, a tension spring column a51, a U-shaped limiting plate a52, a guide plate a53 and a tension spring a6.
Description of the embodiments
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 1-4 of the drawings,
the telescopic leg supporting mechanism of the swivel chair is positioned below a seat plate a1 and comprises a fixed sliding seat a2 fixed on the lower surface of the seat plate a1 and a sliding adjusting plate a3 horizontally and slidably connected with the fixed sliding seat a2, wherein a rear limiting structure a32 is arranged at the rear end of the sliding adjusting plate a3 and is used for preventing the sliding adjusting plate a3 from being excessively separated from the fixed sliding seat a2 forwards.
The sliding adjustment plate a3 is a strip-shaped plate made of a metallic material or a nonmetallic material.
The rear limit structure comprises a rear limit pin arranged at the rear end of the sliding adjusting plate a 3. When the rear limit pin contacts the rear side of the fixed slider a2, the retraction is described as being in place.
The front end of the sliding adjusting plate a3 is sleeved with a front limiting sleeve a4, a front limiting pin a31 is arranged at the front end of the sliding adjusting plate a3, the front limiting pin a31 is blocked on the front side of the front limiting sleeve a4, and the rear limiting pin and the front limiting pin a31 are parallel to each other.
The front side of the front limiting sleeve a4 is hinged with a leg supporting suspension plate a5, and the leg supporting suspension plate a5 is arched and made of plastic.
The leg support cantilever plate a5 is used for placing the legs when being unfolded.
A tension spring a6 is arranged between the lower surface of the leg support hanging plate a5 and the front limiting sleeve a4, the tension spring a6 forces the leg support hanging plate a5 to be folded on the lower surface of the sliding adjusting plate a3, the front limiting sleeve a4 moves along the rear end of the sliding adjusting plate a3 to force the leg support hanging plate a5 to swing anticlockwise and the lower surface of the leg support hanging plate a5 is contacted with the upper surface of the sliding adjusting plate a 3.
In the optimization scheme, a tension spring column a51 is arranged on the lower surface of a leg support cantilever plate a5, one end of a tension spring a6 is connected to the tension spring column a51, the other end of the tension spring a6 is connected to a front limiting pin a31, and the front limiting pin a31 and the tension spring column a51 are positioned on a straight line.
As shown in figures 3 and 5-6,
next, the fixed slide a2 of the present embodiment is in a block shape, a connecting chute a21 is provided at the lower side of the fixed slide a2 along the front-rear direction of the fixed slide a2, the notch of the connecting chute a21 faces downward, the notch aperture of the connecting chute a21 is smaller than the groove bottom width of the connecting chute a21, the sliding adjusting plate a3 is inserted into the connecting chute a21, and the width of the sliding adjusting plate a3 is equal to the notch aperture of the connecting chute a 21.
Further, the regulating projections a22 extending in opposite directions are provided on both sides of the notch of the connecting chute a21, and the connecting chute a21 notch is formed between the regulating projections a 22.
The fixed slider a2 and the restricting projection a22 are integrally injection molded.
A plurality of protrusions a23 are respectively arranged on two sides of the bottom of the connecting chute a21 along the length direction of the connecting chute a21, two protrusions a24 which are in one-to-one correspondence with the protrusions a23 are arranged on one surface of each limiting protrusion a22 close to the bottom of the connecting chute a21, and the sliding adjusting plate a3 is in sliding contact with the protrusions a23 and the protrusions a 24.
The bottom of the connecting chute a21 is provided with a groove body a25 corresponding to the notch of the connecting chute a 21.
The inner wall of the front stop collar a4 is provided with a protrusion tri-a 41 provided along the longitudinal direction of the front stop collar a4, and the sliding adjustment plate a3 is in sliding contact with the protrusion tri-a 41.
The structure of the protrusion can be reinforced, and meanwhile, the contact area can be reduced, so that the moving smoothness is improved.
An arc-shaped limiting notch a42 for accommodating the front limiting pin a31 is formed in the middle of the front side of the front limiting sleeve a 4; the front side of the lower surface of the front limiting sleeve a4 is provided with a lower convex column a43, and the leg supporting hanging plate a5 is contacted with the lower end of the lower convex column a43 after being folded.
The lower surface of the leg support hanging plate a5 is provided with a U-shaped limiting plate a52, the opening of the U-shaped limiting plate a52 faces the front limiting sleeve a4, at least one guide plate a53 is connected to the inner middle part of the U-shaped limiting frame a, the width of the guide plate a53 is smaller than that of the U-shaped limiting plate a52, when the lower surface of the leg support hanging plate a5 is contacted with the upper surface of the sliding adjusting plate a3, the front end of the leg support hanging plate a5 stretches into the U-shaped limiting plate a52, and the upper surface of the leg support hanging plate a5 is contacted with the guide plate a 53.
When the leg support cantilever plate a5 swings anticlockwise upwards, the tension spring is lengthened, and when the front limit sleeve a4 is forced to slide towards the rear end of the sliding adjustment plate a3 along with the action of external force, the front end of the sliding adjustment plate a3 stretches into the U-shaped limit frame a under the guide of the guide plate a53, and the U-shaped limit frame a can prevent the leg support cantilever plate a5 from swinging and can limit.
As shown in figures 7-12 of the drawings,
according to the swivel chair made of the telescopic leg support mechanism of the swivel chair, the swivel chair comprises a supporting leg assembly 6 and a base 2 connected to the supporting leg assembly 6, wherein a swinging frame 3 is hinged to the rear side of the upper surface of the base 2, the swinging frame 3 is obliquely and downwards arranged, the lower side of a backrest 1 is connected with the middle part of the swinging frame 3 through a first hinge structure, the lower side of the backrest 1 is connected with the lower side of the base 2 through a second hinge structure, a tension spring 4 for forcing the upper side of the swinging frame 3 to have a downward movement trend is arranged between the upper side of the swinging frame 3 and the base 2, so that the backrest 1 is attached to the back of a human body, the front side of the base 2 is hinged to the rear side of a front linkage frame 5, the upper side of the swinging frame 3 is hinged to the rear side of the seat plate a1, the front side of the front linkage frame 5 is hinged to the front side of the seat plate a1, the left side and the right side of the seat plate a1 are respectively provided with a 7, and the lower surface of the seat plate a1 is also provided with a telescopic leg support mechanism.
The swing frame 3 is hinged to the rear side of the upper surface of the base 2, the swing frame 3 is obliquely arranged backwards and downwards, the swing frame 3 is of an inverted U-shaped structure, and the swing frame 3 is made of metal plates in a bending mode.
The two sides of the lower end of the swinging frame 3 are fixed on the rear side of the upper surface of the base 2 through fixing pins.
The lower side of the backrest 1 is connected with the middle part of the swinging frame 3 through a first hinge structure, specifically, the first hinge structure of the embodiment comprises two hinge arms 11 which are parallel to each other, one end of each hinge arm 11 is fixed on the lower side of the backrest 1, and the other end of each hinge arm 11 is connected with the rear side of the base 2 through a first pin roll 12; a fixed plate 13 is arranged on the lower side of the backrest 1, and a first hinge arm 11 is fixed at two ends of the fixed plate 13.
The fixing plate 13 and the hinge arm one 11 are integrally formed and made of a metal plate material.
The lower side of the backrest 1 is connected with the lower side of the base 2 through a second hinge structure, specifically, the second hinge structure comprises two hinge arms 14 which are parallel to each other, a U-shaped plate 15 positioned between the two hinge arms 11 is arranged on the fixed plate 13, two ends of the U-shaped plate 15 are respectively connected with one end of one hinge arm 14 through a first hinge shaft, and the other end of the hinge arm 14 is connected with the upper sides of two ends of the swinging frame 3 through a second hinge shaft.
The U-shaped plate 15 is made of a metal plate material.
Two supporting arms 30 are connected to the upper side of the swinging frame 3, and the two supporting arms 30 are parallel to each other and connected to the rear side of the seat plate a1 through a hinge shaft III.
The support arm 30 is integrally formed with the swing frame 3.
A tension spring 4 for forcing the upper side of the swing frame 3 to have a downward movement trend is provided between the upper side of the swing frame 3 and the base 2 so as to attach the backrest 1 to the back of the human body, and the tension spring 4 in this embodiment has two tension spring 4 and two tension spring 4 are parallel to each other.
The tension spring piece 4 is obliquely arranged, and an included angle larger than 90 degrees is formed between the tension spring piece 4 and the swinging frame 3.
One end of the tension spring piece 4 is hooked in a tension spring hole on the upper side of the swinging frame 3, and the other end of the tension spring piece 4 is hooked in a tension spring coil on the upper surface of the base.
The base is also provided with an outer cover 10, a limiting gap 100 is reserved on the upper side of the outer cover 10, and when the supporting arm 30 swings downwards to be contacted with the bottom of the limiting gap 100, the supporting arm 30 swings to the limiting position.
The front side of the base 2 is hinged with the rear side of the front linkage frame 5, and the front side and the rear side are connected through a front hinge shaft.
The seating plate a1 is located above the swing frame 3 and the front link frame 5, and the upper side of the swing frame 3 is hinge-coupled with the rear side of the seating plate a1, i.e., the support arm 30 coupled to the upper side of the swing frame 3 is coupled with the rear side of the seating plate a1 through an upper hinge pin.
The front side of the front linkage frame 5 is hinged with the front side of the seat plate a 1. The two are connected through a hinge shaft body.
A restriction device 21 located in the swing frame 3 is provided on the upper surface of the base 2, specifically, the restriction device 21 is used for preventing the upper side of the swing frame 3 from excessively swinging downwards; the restricting device 21 of this embodiment includes an inverted U-shaped restricting frame provided on the upper surface of the base 2, and an inclined restricting surface in accordance with the inclined direction of the swing frame 3 is provided at the outer top of the inverted U-shaped restricting frame.
A control mechanism for locking and swinging the base 2 and the swinging frame 3 and canceling the locking between the base 2 and the swinging frame 3 is arranged between the base 2 and the upper side of the swinging frame 3. Specifically, the control mechanism of the present embodiment includes a locking through hole 31 disposed at the left side and/or the right side of the swing frame 3, a plurality of locking grooves 311 are disposed on the lower side wall of the locking through hole 31, the locking grooves 311 are distributed in a step-like manner, a control rotating rod 32 is disposed on the left side or the right side of the base 2 in a penetrating manner, a connecting arm 33 is connected to the inner end of the control rotating rod 32, and a locking rod 34 capable of being clamped in any one of the locking grooves 311 is fixed on the connecting arm 33.
Two connecting arms 33 which are parallel to each other are connected to the inner end of the control rotating rod 32, the two connecting arms 33 are located on the outer sides of the left side or the right side of the swinging frame 3, the locking rod 34 penetrates through the locking through hole 31, two ends of the locking rod 34 penetrate through one end, far away from the control rotating rod 32, of the connecting arm 33, and a connecting arm locking structure is arranged between any connecting arm 33 and the base 2.
Next, as shown in FIGS. 9-11,
the connecting arm locking structure of this embodiment includes a fixed block 22 disposed on the upper surface of the base 2, and a U-shaped block 23 sleeved on any one of the connecting arms 33, a plurality of spherical recesses 231 arranged discretely are disposed in the middle of the outer surface of the U-shaped block 23, a lateral hole 221 is disposed on a surface of the fixed block 22 adjacent to the spherical recess 231, and a locking pin 24 inserted into the lateral hole 221, one end of the lateral hole 221 is aligned with a surface of the connecting arm 33 provided with the spherical recess 231, one end of the locking pin 24 has an arc convex surface 241 matching with the spherical recess 231, a spring 25 is disposed between the other end of the locking pin 24 and the lateral hole 221, and the spring 25 forces one end of the locking pin 24 provided with the arc convex surface 241 to be inserted into the spherical recess 231 when the locking pin 24 is aligned with any one spherical recess 231.
A positioning groove for placing the inner end of the control rotating rod 32 is arranged on one side of the base 2, the inner end of the control rotating rod 32 is clamped in the positioning groove and is rotationally connected with the positioning groove, a Y-shaped sealing seat 26 for sealing the notch of the positioning groove is arranged on the base 2, two connecting arms 33 are arranged in the opening of the Y-shaped sealing seat 26, and the Y-shaped sealing seat 26 is fixed on the base 2 through a pressing plate 27. Screws are arranged at two ends of the pressing plate 27 in a penetrating mode, and the bolts are in threaded connection with the base.
In the present embodiment of the present invention, in the present embodiment,
when a person sits on the seat, the gravity center changes due to the front-back inclination of the person, the angle of the seat also changes, the angle of the swinging frame 3 also synchronously changes, the angle of the backrest also changes through the linkage of the first hinge structure and the second hinge structure, and the designed two tension spring pieces, namely the tension springs, can force the backrest to be actively attached to the back of the person.
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 (8)
1. The swivel chair comprises a supporting leg component and a base connected to the supporting leg component, and is characterized in that a swinging frame is hinged on the rear side of the upper surface of the base, the swinging frame is obliquely and backwards arranged downwards, the lower side of a backrest is connected with the middle part of the swinging frame through a first hinge structure, the lower side of the backrest is connected with the lower side of the base through a second hinge structure, a tension spring piece for forcing the upper side of the swinging frame to have a downward movement trend so as to paste the backrest on the back of a human body is arranged between the upper side of the swinging frame and the base, the front side of the base is hinged with the rear side of a front linkage frame, a seat plate is positioned above the swinging frame and the front linkage frame, the upper side of the swinging frame is hinged with the rear side of the seat plate, the front side of the front linkage frame is hinged with the front side of the seat plate, a telescopic leg supporting mechanism is also arranged on the lower surface of the seat plate, the telescopic leg support mechanism comprises a fixed sliding seat fixed on the lower surface of a seat plate and a sliding adjusting plate horizontally and slidably connected with the fixed sliding seat, wherein the rear end of the sliding adjusting plate is provided with a rear limit structure which is used for preventing the sliding adjusting plate from being excessively separated from the fixed sliding seat forwards, the front end of the sliding adjusting plate is sleeved with a front limit sleeve, a front limit pin which is arranged at the front end of the sliding adjusting plate and is blocked on the front side of the front limit sleeve, the front side of the front limit sleeve is hinged with a leg support suspension plate, the lower surface of the leg support suspension plate is provided with a tension spring column, one end of the tension spring is connected to the tension spring column, the other end of the tension spring is connected to the front limit pin, the front limit pin and the tension spring column are positioned on a straight line, a tension spring is arranged between the lower surface of the leg support suspension plate and the front limit sleeve and forces the leg support suspension plate to be folded on the lower surface of the sliding adjusting plate, the current limiting sleeve moves along the rear end of the sliding adjusting plate to force the leg supporting cantilever plate to swing anticlockwise and upwards, and the lower surface of the leg supporting cantilever plate is contacted with the upper surface of the sliding adjusting plate;
the first hinge structure comprises two hinge arms I which are parallel to each other, one end of each hinge arm I is fixed on the lower side of the backrest, and the other end of each hinge arm I is connected with the rear side of the base through a first pin shaft; the lower side of the backrest is provided with a fixed plate, and the first articulated arm is fixed at two ends of the fixed plate;
the hinge structure II comprises two hinge arms II which are parallel to each other, a U-shaped plate positioned between the two hinge arms I is arranged on the fixed plate, two ends of the U-shaped plate are respectively connected with one end of one hinge arm II through a hinge shaft I, and the other end of the hinge arm II is connected with the upper sides of two ends of the swing frame through the hinge shaft II.
2. The swivel chair according to claim 1, wherein the fixed slide is block-shaped, a connecting chute is provided on the underside of the fixed slide along the front-rear direction of the fixed slide, the slot opening of the connecting chute is downward and the slot opening caliber of the connecting chute is smaller than the slot bottom width of the connecting chute, the sliding adjusting plate is inserted into the connecting chute, and the width of the sliding adjusting plate is equal to the slot opening caliber of the connecting chute.
3. The swivel chair according to claim 2, wherein two sides of said connecting chute slot are provided with opposed elongated restricting projections, said connecting chute slot being formed between said restricting projections.
4. A swivel chair according to claim 3, wherein a plurality of protrusions are provided on both sides of the bottom of the connecting chute along the length direction of the connecting chute, a protrusion two corresponding to the protrusion one to one is provided on a surface of each of the restriction protrusions near the bottom of the connecting chute, and the sliding adjusting plate is in sliding contact with the protrusion one and the protrusion two.
5. A swivel chair according to claim 3, wherein the bottom of the connecting chute is provided with a groove body corresponding to the notch of the connecting chute.
6. The swivel chair according to claim 1, wherein the inner wall of the front stop collar is provided with a third protrusion disposed along the length direction of the front stop collar, and the sliding adjusting plate is in sliding contact with the third protrusion.
7. The swivel chair according to claim 1, wherein the front side middle part of the front limit collar is provided with an arc-shaped limit notch for accommodating the front limit pin; the front side of the lower surface of the front limiting sleeve is provided with a lower convex column, and the leg support hanging plate is contacted with the lower end of the lower convex column after being folded.
8. The swivel chair according to claim 1, wherein the lower surface of the leg supporting hanger is provided with a U-shaped limiting plate, the opening of the U-shaped limiting plate faces the front limiting sleeve, at least one guide plate is connected to the inner middle portion of the U-shaped limiting frame, the width of the guide plate is smaller than that of the U-shaped limiting plate, and when the lower surface of the leg supporting hanger is in contact with the upper surface of the sliding adjusting plate, the front end of the leg supporting hanger extends into the U-shaped limiting plate, and the upper surface of the leg supporting hanger is in contact with the guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177374.3A CN109864483B (en) | 2019-03-08 | 2019-03-08 | Swivel chair and telescopic leg support mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177374.3A CN109864483B (en) | 2019-03-08 | 2019-03-08 | Swivel chair and telescopic leg support mechanism thereof |
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| CN109864483B true CN109864483B (en) | 2023-12-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114376365B (en) * | 2021-03-11 | 2024-06-11 | 博格睿(重庆)科技有限公司 | Integrated seat |
| CN115530561B (en) * | 2022-10-31 | 2024-01-02 | 佛山市精一家具有限公司 | Self-adaptive seat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1974633A2 (en) * | 2007-03-30 | 2008-10-01 | Olsberg Hermann Everken GmbH | Seating |
| KR20130007300U (en) * | 2012-06-13 | 2013-12-23 | (주) 엑토 | Office chair equipped with stool |
| CN204132865U (en) * | 2014-08-20 | 2015-02-04 | 赵国林 | Sitting-lying double-purpose office chair |
| KR20150108111A (en) * | 2014-03-17 | 2015-09-25 | 이동원 | The foot rest chair with a foot massage |
| CN108113288A (en) * | 2017-12-28 | 2018-06-05 | 贵州大学 | A kind of office seating with massage functions |
| CN209677902U (en) * | 2019-03-08 | 2019-11-26 | 浙江粤强家具科技有限公司 | Swivel chair and its telescopic leg supporting mechanism |
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2019
- 2019-03-08 CN CN201910177374.3A patent/CN109864483B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1974633A2 (en) * | 2007-03-30 | 2008-10-01 | Olsberg Hermann Everken GmbH | Seating |
| KR20130007300U (en) * | 2012-06-13 | 2013-12-23 | (주) 엑토 | Office chair equipped with stool |
| KR20150108111A (en) * | 2014-03-17 | 2015-09-25 | 이동원 | The foot rest chair with a foot massage |
| CN204132865U (en) * | 2014-08-20 | 2015-02-04 | 赵国林 | Sitting-lying double-purpose office chair |
| CN108113288A (en) * | 2017-12-28 | 2018-06-05 | 贵州大学 | A kind of office seating with massage functions |
| CN209677902U (en) * | 2019-03-08 | 2019-11-26 | 浙江粤强家具科技有限公司 | Swivel chair and its telescopic leg supporting mechanism |
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| CN109864483A (en) | 2019-06-11 |
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