CN202009853U

CN202009853U - Revolving chair structure with stepless backward and forward leaning adjustment

Info

Publication number: CN202009853U
Application number: CN2011200322651U
Authority: CN
Inventors: 翁永联
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-30
Filing date: 2011-01-30
Publication date: 2011-10-19
Anticipated expiration: 2021-01-30

Abstract

A revolving chair structure with stepless backward and forward leaning adjustment comprises a seat plate and a backrest, wherein a base plate is fixedly arranged at the bottom of the seat plate; the backrest is movably articulated with the base plate through a tail plate in a rear backward and forward leaning way; at least one backward and forward leaning adjustment spring plate is fixedly bridged at the front and rear end along the length extension direction of the base plate; the tail plate is pressed and connected with the rear end of the backward and forward leaning adjustment spring plate through a horizontal rod; a worm is fixed at the front end of the base plate; a worm gear case capable of sliding back and forth along the worm is sleeved on the worm; a sliding fulcrum seat butting against the bottom end of the backward and forward leaning adjustment spring plate extends from the bottom of the worm gear case; the sliding fulcrum seat can slide along the length extension direction of the backward and forward leaning adjustment spring plate; and an adjusting handle for adjusting the worm gear case to slide back and forth along the worm is also connected to one side of the worm gear case. The revolving chair structure has simple structure and large adjusting angle; and the adjusting handle is connected with the worm gear case and the worm in a matching way, so that the using comfort of the revolving chair is effectively improved when the adjusting handle is rotated to be appropriate, and the adjustment of the revolving chair is humanized.

Description

The swivel chair structure that stepless reclining is regulated

Technical field

The utility model relates to a kind of swivel chair structure, be specifically related to a kind of simple in structure, the swivel chair structure that the stepless reclining that result of use is good is regulated.

Background technology

At present, existing swivel chair can be adjusted its backrest reclining angle, with the needs that adapt to the different seat appearance of people and couch, the structure that it adopts the seat plate bottom that cylinder and spring are installed mostly, as patent No. CN200920050351.8, the applying date is on January 19th, 2009, announce in the Chinese utility model patent on December 30th, 2009, principle by the compression spring changes the stressed of swivel chair backrest, it is very limited that its adjustable range is regulated in the reclining of this swivel chair structure, and the adjusting pressure that compression needs during spring is bigger, the manufacturing cost height; Moreover, cause the user when the rotation regulating handle, need spend the adjusting that bigger strength just can be finished the backrest reclining, do not meet the demand that swivel chair is comfortable and hommization develops.

Summary of the invention

In order to overcome the deficiency of existing swivel chair inclination of the seat backrest adjusting device, purpose provide a kind of simple in structure, compact, the reclining adjusting angle is big, handle is regulated the swivel chair structure along sliding stepless reclining adjusting.

The technical scheme that its technical problem that solves the utility model adopts is: the swivel chair structure that stepless reclining is regulated, comprise seat board and backrest, the seat board bottom is installed with the chassis, backrest is the hypsokinesis backstroke by tailgate and chassis and is movably hinged, it is characterized in that, before its length bearing of trend of upper edge, described chassis, the rear end fixed span is connected at least one reclining and regulates diving board, tailgate is regulated diving board rear end crimping by transverse bar and reclining, chassis front end is fixed with worm screw, being arranged with on the worm screw can be before worm screw, the worm gear case that slides in the back, the worm gear case bottom is extended with reclining and regulates the sliding fulcrum seat that the diving board bottom offsets, this sliding fulcrum seat can be regulated the length bearing of trend slip of diving board along reclining, and worm gear case one side also is connected with regulates worm gear case before worm screw, the regulating handle that slides in the back.Adopt the swivel chair backrest reclining adjustment structure of this structure, in that being set on the chassis, reclining regulates diving board and can be before the diving board bottom is regulated in reclining, the sliding fulcrum seat that move the back, reclining is regulated diving board and is connected with the tailgate that is connected backrest, the relation of utilizing the power and the arm of force to be inversely proportional to, when rotating regulating handle, when worm gear case drive sliding fulcrum seat slides to the chassis foremost along worm screw, it is the longest that diving board rear end to the arm of force between the sliding fulcrum seat is regulated in reclining this moment, can apply minimum pressure on the contrary can carry out the reclining adjusting to backrest, and backrest adjustable inclination adjusting angle is maximum; Otherwise, when worm gear case drive sliding fulcrum seat slides to the chassis rearmost end along worm screw, it is the shortest to the arm of force between the sliding fulcrum seat that the diving board rear end is regulated in reclining this moment, and it can bear the pressure maximum, and backrest adjustable inclination adjusting angle is minimum, it is simple in structure, the angle adjustable span scope is big, and regulating handle and worm gear case and worm screw are connected, so the adjusting of rotation regulating handle is moderate, comfort when effectively improving the swivel chair use is regulated swivel chair and is had more hommization.

The purpose of this utility model can also adopt following technical measures to solve: the front and back ends fixed span of its length bearing of trend of upper edge, described chassis is connected to two reclinings and regulates diving board, the worm and worm wheel case is arranged on two reclinings and regulates between the diving board, two reclinings are regulated the diving board branch and are located at the both sides, chassis, make between backrest and the chassis stressed more even, more reasonable, effectively prolong swivel chair service life.

Described worm gear case bottom is fixed with the sliding fulcrum seat, the sliding fulcrum seat extends along two reclinings adjusting diving board bottom and offsets, and the sliding fulcrum seat is a monolithic construction, and end face has circular-arc, be convenient to regulate and reduce resistance when the diving board basal sliding offsets, also well play the point supporting effect with reclining.

Described sliding fulcrum seat bottom is extended with positive stop lug boss, have stopper slot on the chassis of corresponding positive stop lug boss, positive stop lug boss extends in the stopper slot and can move along stopper slot is forward and backward, be difficult for skew when helping the sliding fulcrum seat and sliding, play the front and back ends position-limiting action simultaneously, also be convenient to assembling and positioning, make structure compact more, reasonable.

The curved longitudinal baffle that is connected to of described chassis front end, have the flat hole of pegging graft on the longitudinal baffle, reclining is regulated the diving board front end and is plugged in the flat hole of pegging graft affixed with the chassis, described worm screw one end is locked by nut spanner and longitudinal baffle, longitudinal baffle is convenient regulates diving board front end grafting twisting with reclining, simultaneously also be convenient to the fixedly connected of worm screw, worm screw one end nut spanner is locked at longitudinal baffle one end, and is easy to connect, compact.

Described extreme end of chassis both sides are provided with the spacing projection of reclining, have the arc spacing hole that is connected with the spacing projection of reclining on the corresponding tailgate, strengthen the compactedness of structure, the convenient location of installing.

The worm gear and the planetary gear of mutual bridle joint are installed in the described worm gear case, worm screw interted worm gear case and worm gear and slides and be spirally connected, regulating handle one end extends in the worm gear case and is provided with adjusting gear, adjusting gear and planetary gear are connected with a joggle, adopt traditional worm gear case and worm structure, it is simple in structure, compact, reasonable, and cost is low, connection and adjusting realize the step-less adjustment that the backrest reclining is regulated better along sliding.

Described regulating handle outer ends is provided with lever head, and lever head meets human body hand shape and is provided with, and is convenient to hand grip.

Described tailgate is connected with backrest by L type connecting plate.

Described seat board bottom is fixed with forward and backward link, and forward and backward link end is connected with the tailgate outer panel with base respectively.

It is the thin plate shape that plastic material or metal material constitute that diving board is regulated in reclining.

The beneficial effects of the utility model are: the swivel chair structure that the stepless reclining of the utility model is regulated, in that being set on the chassis, the bridge-type reclining regulates diving board and can be before the diving board bottom is regulated in reclining, the sliding fulcrum seat that move the back, reclining is regulated the diving board rear end and is connected with the tailgate that is connected backrest, the relation of utilizing the power and the arm of force to be inversely proportional to, when rotating regulating handle, when worm gear case drive sliding fulcrum seat slides to the chassis foremost along worm screw, it is the longest that diving board rear end to the arm of force between the sliding fulcrum seat is regulated in reclining this moment, can apply minimum pressure on the contrary can carry out the reclining adjusting to backrest, and backrest adjustable inclination adjusting angle is maximum; Otherwise, when worm gear case drive sliding fulcrum seat slides to the chassis rearmost end along worm screw, it is the shortest to the arm of force between the sliding fulcrum seat that the diving board rear end is regulated in reclining this moment, and backrest adjustable inclination adjusting angle also is minimum, and it is simple in structure, compact, can realize stepless arbitrarily angular adjustment, angle adjustable is big, and regulating handle and worm gear case and worm screw are connected, so the adjusting of rotation regulating handle is moderate, comfort when effectively improving the swivel chair use is regulated swivel chair and is had more hommization.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation behind the removal seat board in the utility model.

Fig. 3 is the structural representation behind the removal backrest in the utility model.

Fig. 4 is the structural representation behind the removal part parts in the utility model.

Fig. 5 is the structural representation behind the removal part parts in the utility model.

Fig. 6 is the structural representation of another embodiment of the utility model.

Fig. 7 is the structural representation of another angle of relative Fig. 6.

Fig. 8 is the structural representation that removes backrest in another embodiment of the utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Consult Fig. 1 to Fig. 5, the swivel chair structure that a kind of stepless reclining is regulated, comprise seat board 1 and backrest 2, seat board 1 bottom is installed with chassis 3, backrest 2 is the hypsokinesis backstroke by tailgate 4 and chassis 3 and is movably hinged, before its length bearing of trend of 3 upper edges, described chassis, the rear end fixed span is connected at least one reclining and regulates diving board 5, tailgate 4 is regulated diving board 5 rear ends, 501 crimping by transverse bar 6 and reclining, chassis 3 front ends are fixed with worm screw 7, being arranged with on the worm screw 7 can be before worm screw 7, the worm gear case 8 that slides in the back, worm gear case 8 bottoms are extended with reclining and regulate the sliding fulcrum seat 9 that diving board 5 bottoms offset, this sliding fulcrum seat 9 can be regulated the length bearing of trend slip of diving board 5 along reclining, and worm gear case 8 one sides also are connected with regulates worm gear case 8 before worm screw 7, the regulating handle 10 that slides in the back.

As embodiment more specifically, further: the front and back ends fixed span of its length bearing of trend of 3 upper edges, described chassis is connected to two reclinings and regulates diving board 5, worm screw 7 and worm gear case 8 are arranged on two reclinings and regulate between the diving board 5, two reclinings are regulated diving board and were located at 3 both sides, chassis in 5 minutes, make between backrest 2 and the chassis 3 stressed more even, more reasonable, effectively prolong swivel chair service life.

Described worm gear case 8 bottoms are fixed with sliding fulcrum seat 9, sliding fulcrum seat 9 extends along two reclinings adjusting diving board, 5 bottoms and offsets, sliding fulcrum seat 9 is a monolithic construction, end face 901 has circular-arc, be convenient to regulate and reduce resistance when diving board 5 basal slidings offset, also well play the point supporting effect with reclining.

Described sliding fulcrum seat 9 bottoms are extended with positive stop lug boss 902, have stopper slot 301 on the chassis 3 of corresponding positive stop lug boss 902, positive stop lug boss 902 extends into also can be along stopper slot 301 forward and backward moving in the stopper slot 301, be difficult for skew when helping sliding fulcrum seat 9 and sliding, play the front and back ends position-limiting action simultaneously, also be convenient to assembling and positioning, make structure compact more, reasonable.

The curved longitudinal baffle 302 that is connected to of described chassis 3 front ends, have the flat hole 302-a that pegs graft on the longitudinal baffle 302, reclining is regulated diving board 5 front ends 502 and is plugged in the flat hole 302-a that pegs graft affixed with chassis 3, described worm screw 7 one ends are locked by nut spanner 11 and longitudinal baffle 302, longitudinal baffle 302 convenient and reclining adjusting diving board 5 front ends 502 grafting twistings, simultaneously also be convenient to the fixedly connected of worm screw 7, worm screw 7 one end nut spanners 11 are locked at longitudinal baffle 302 1 ends, and are easy to connect, compact.

Both sides, 3 rear end, described chassis are provided with the spacing projection 303 of reclining, have the arc spacing hole 401 that is connected with the spacing projection 303 of reclining on the corresponding tailgate 4, strengthen the compactedness of structure, the convenient location of installing.

The worm gear 801 and the planetary gear 802 of mutual bridle joint are installed in the described worm gear case 8, worm screw 7 interted worm gear case 8 and slides with worm gear 801 and be spirally connected, regulating handle 10 1 ends extend in the worm gear case 8 and are provided with adjusting gear 1001, adjusting gear 1001 is connected with a joggle with planetary gear 802, adopt traditional worm gear case 8 and worm screw 7 structures, it is simple in structure, compact, reasonable, and cost is low, connection and adjusting realize the step-less adjustment that the backrest reclining is regulated better along sliding.

Described regulating handle 10 outer ends are provided with lever head 1002, and lever head 1002 meets the concavo-convex setting of human body hand shape, are convenient to hand grip and rotate.

Described tailgate 4 is connected with backrest 2 by L type connecting plate 12.

Described seat board 1 bottom is fixed with forward and backward link 101,102, and forward and backward link 101,102 terminal 101-a, 102-a are connected with tailgate 4 outer panels with chassis 3 respectively.

It is the thin plate shape that plastic material or metal material constitute that diving board 5 is regulated in reclining.

Operation principle: during use, rotate regulating handle 10, worm gear case 8 drives sliding fulcrum seats 9 and slides to the chassis 3 foremost the time along worm screw 7, it is maximum that diving board 5 rear ends 501 to the arm of force between the sliding fulcrum seat 9 is regulated in reclining this moment, opposite with the arm of force is can apply minimum pressure can carry out the reclining adjusting to backrest 2, and backrest 2 adjustable inclination adjusting angles are maximum; Otherwise, when worm gear case 8 drives sliding fulcrum seats 9 and slides to the chassis 3 rearmost ends along worm screw 7, it is minimum that diving board 5 rear ends to the arm of force between the sliding fulcrum seat 9 is regulated in reclining this moment, this moment, the reclining pressure that bears of backrest 2 but was maximum, so backrest 2 adjustable inclination adjusting angles also are minimum, it is simple in structure, angle adjustable is big, regulating handle 10 is connected with worm gear case 8 and worm screw 7, so the adjusting of rotation regulating handle 10 is moderate, comfort when effectively improving the swivel chair use is regulated swivel chair and is had more hommization.

As the further embodiment that extends of the utility model reclining adjustment structure, diving board is regulated in its reclining, the sliding fulcrum seat, the combination of worm screw and worm gear case structure can be applicable on the backrest structure, its embodiment is similar to above-mentioned embodiment, difference is, extremely shown in Figure 7 as Fig. 6, the specific embodiment is as follows: the swivel chair backrest structure that a kind of stepless reclining is regulated, comprise the holder a1 that is connected with the swivel chair chassis, described holder comprises vertical/horizontal expansion plate a101, a102, horizontal expansion plate a102 rear end has slot a102-1, interior its top a202 of the fixing slot a102-1 that pegs graft of bottom a201 of at least one reclining adjusting diving board a2 extends longitudinally plate a101 short transverse and is close to extension and affixed with backrest a3 bottom a301, horizontal expansion plate a102 front end vertically is fixed with worm screw a4, be connected with on the worm screw a4 and be connected with sliding fulcrum seat a5, described sliding fulcrum seat a5 front end is slidingly connected by worm gear case a6 and worm screw a4, its rear end is provided with sleeve longitudinal extension plate a101 and the interior chute a501 of diving board a2 is regulated in reclining, the chute a501 outside is connected with to slide is close to the transverse bar a502 that diving board a2 end face is regulated in reclining, and worm gear case a6 one side also is connected with regulates worm gear case a6 along on the worm screw a4, the regulating handle a7 of lower slider.

Further improvement as present embodiment, described three reclinings are regulated in the fixing slot a102-1 that pegs graft of bottom a201 of diving board a2, three reclinings are regulated diving board a2 and are close to longitudinal extension plate a101 and extend longitudinally the extension of plate a101 short transverse, three reclinings regulate diving board a2 top a202 and backrest a3 bottom a301 affixed, the rubber-like reclining is regulated diving board a2 and is used in combination, make its elastic force moderate, long service life.

It is affixed with screw hole a8 form near end face and the longitudinal extension plate a101 of bottom a201 that diving board a2 is regulated in described reclining, plays the effect of reinforcing the connection.

Both sides, described sliding fulcrum seat a5 rear end are provided with two and connect journal stirrup a503, a504, columned two terminal connections with two between journal stirrup a503, a504 connection and two connection journal stirrup a503, a504 and the transverse bar a502 of transverse bar a502 constitute chute a501, adopt columned transverse bar a502, because end face is circular-arc, be convenient to regulate diving board a2 end face and slide and reduce resistance when offseting, also well play the point supporting effect with reclining.

Operation principle: during use, rotate regulating handle, sliding fulcrum seat a5 slides downwards to when the horizontal expansion plate a102 end face at the drive lower edge of worm gear case a6 worm screw a4, reclining this moment regulate diving board a2 top a202 to the arm of force between the transverse bar a502 of sliding fulcrum seat a5 be the longest, can apply minimum pressure on the contrary can carry out the reclining adjusting to backrest a3, and backrest a3 adjustable inclination adjusting angle is maximum; Otherwise, when worm gear case a6 drive sliding fulcrum seat a5 upwards slides to backrest a3 bottom a301 along worm screw a4, reclining this moment regulate diving board a2 top a202 to the arm of force between the transverse bar a502 of sliding fulcrum seat a5 be the shortest, it can bear the pressure maximum, backrest a3 adjustable inclination adjusting angle is minimum, it is simple in structure, the angle adjustable span scope is big, regulating handle a7 and turbine box a6 and worm screw a4 are connected, realize step-less adjustment, and the adjusting of rotation regulating handle a7 is moderate, and the comfort when effectively improving the swivel chair use is regulated swivel chair and had more hommization.

Above-described specific embodiment only is the utility model preferred embodiment, and the equivalent arrangements of being done according to the utility model claim all should be technology of the present utility model and contains such as.

Claims

1. the swivel chair structure that stepless reclining is regulated, comprise seat board (1) and backrest (2), seat board (1) bottom is installed with chassis (3), backrest (2) is the hypsokinesis backstroke by tailgate (4) and chassis (3) and is movably hinged, it is characterized in that, before its length bearing of trend of upper edge, described chassis (3), the rear end fixed span is connected at least one reclining and regulates diving board (5), tailgate (4) is regulated diving board (5) rear end (501) crimping by transverse bar (6) and reclining, chassis (3) front end is fixed with worm screw (7), being arranged with on the worm screw (7) can be preceding along worm screw (7), the worm gear case (8) that slides in the back, worm gear case (8) bottom is extended with reclining and regulates the sliding fulcrum seat (9) that diving board (5) bottom offsets, this sliding fulcrum seat (9) can be regulated the length bearing of trend slip of diving board (5) along reclining, and it is preceding along worm screw (7) that worm gear case (8) one sides also are connected with adjusting worm gear case (8), the regulating handle (10) that slides in the back.

2. the swivel chair structure that described stepless reclining is regulated according to claim 1, it is characterized in that: the front and back ends fixed span of its length bearing of trend of upper edge, described chassis (3) is connected to two reclinings and regulates diving board (5), and worm screw (7) and worm gear case (8) are arranged on two reclinings and regulate between the diving board (5).

3. according to the swivel chair structure of the described stepless reclining adjusting of claim 2, it is characterized in that: described worm gear case (8) bottom is fixed with sliding fulcrum seat (9), and sliding fulcrum seat (9) extends along two reclinings adjusting diving board (5) bottom and offsets.

4. the swivel chair structure that described stepless reclining is regulated according to claim 3, it is characterized in that: described sliding fulcrum seat (9) bottom is extended with positive stop lug boss (902), have stopper slot (301) on the chassis (3) of corresponding positive stop lug boss (902), positive stop lug boss (902) extends in the stopper slot (301) and can move along stopper slot (301) is forward and backward.

5. the swivel chair structure of regulating according to claim 1 or 2 described stepless reclinings, it is characterized in that: the curved longitudinal baffle (302) that is connected to of described chassis (3) front end, have the flat hole (302-a) of pegging graft on the longitudinal baffle (302), reclining adjusting diving board (5) front end (502) is plugged in the flat hole (302-a) of pegging graft affixed with chassis (3), and described worm screw (7) one ends are locked by nut spanner (11) and longitudinal baffle (302).

6. the swivel chair structure that described stepless reclining is regulated according to claim 1, it is characterized in that: both sides, rear end, described chassis (3) are provided with the spacing projection of reclining (303), have the arc spacing hole (401) that is connected with the spacing projection of reclining (303) on the corresponding tailgate (4).

7. the swivel chair structure that described stepless reclining is regulated according to claim 1, it is characterized in that: worm gear (801) and planetary gear (802) that mutual bridle joint is installed in the described worm gear case (8), worm screw (7) interted worm gear case (8) and worm gear (801) and slides and be spirally connected, regulating handle (10) one ends extend in the worm gear case (8) and are provided with adjusting gear (1001), and adjusting gear (1001) is connected with a joggle with planetary gear (802).

8. according to the swivel chair structure of claim 1 or 7 described stepless reclinings adjustings, it is characterized in that: described regulating handle (10) outer ends is provided with lever head (1002).

9. according to the swivel chair structure of the described stepless reclining adjusting of claim 1, it is characterized in that: described tailgate (4) is connected with backrest (2) by L type connecting plate (12).

10. the swivel chair structure that described stepless reclining is regulated according to claim 1, it is characterized in that: described seat board (1) bottom is fixed with forward and backward link (101,102), and forward and backward link (101,102) terminal (101-a, 102-a) is connected with tailgate (4) outer panel with chassis (3) respectively.