CN214284091U

CN214284091U - Lifting chair structure with adjustable chair back

Info

Publication number: CN214284091U
Application number: CN202120328722.5U
Authority: CN
Inventors: 张武宗
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-09-28
Anticipated expiration: 2031-02-04

Abstract

A lifting chair structure with an adjustable chair back comprises a chair body and a chair back, wherein a supporting arm is arranged on the chair body, a height adjusting mechanism is arranged on the supporting arm, the height adjusting mechanism comprises a positioning plate fixed on the supporting arm and a sliding plate fixed on the chair back, and the sliding plate is vertically and slidably connected with the positioning plate; the positioning plate is provided with an adjusting groove, and a plurality of gear grooves which are sequentially arranged from top to bottom are formed in the adjusting groove; the back of the sliding plate is hinged with a first clamping piece and a second clamping piece which are located in an adjusting groove, an elastic piece is arranged between the first clamping piece and the second clamping piece and used for driving the first clamping piece and the second clamping piece to be clamped into the same gear groove, and a switching structure is arranged in the adjusting groove and used for driving the first clamping piece and the second clamping piece to be separated from the highest gear groove to be buckled into the lowest gear groove in a switching mode. The utility model discloses can accomplish the regulation of the back of the chair height, strengthen the travelling comfort of chair, the waist of the protection of being convenient for user and the use that improves the user are experienced, are fit for extensively popularizing and applying.

Description

Lifting chair structure with adjustable chair back

Technical Field

The utility model relates to a chair field, concretely relates to back of chair adjustable lift chair structure.

Background

At present, most office chairs can only lift the part above a base of the chair integrally, but cannot lift the back of the chair, so that the office chair is not beneficial to sitting of tall people, and is particularly beneficial to supporting of the waist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a lifting chair structure with an adjustable chair back.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a back of chair adjustable lift chair structure, includes seat body, the back of the chair, be equipped with the support arm that is used for connecting the back of the chair on the seat body, its characterized in that: the supporting arm is provided with a height adjusting mechanism, the height adjusting mechanism comprises a positioning plate fixed on the supporting arm and a sliding plate fixed on the chair back, and the sliding plate is vertically and slidably connected with the positioning plate; the positioning plate is provided with an adjusting groove, and a plurality of gear grooves which are sequentially arranged from top to bottom are formed in the adjusting groove; the back of the sliding plate is hinged with a first clamping piece and a second clamping piece which are located in an adjusting groove, an elastic piece is arranged between the first clamping piece and the second clamping piece and used for driving the first clamping piece and the second clamping piece to be clamped into the same gear groove, and a switching structure is arranged in the adjusting groove and used for driving the first clamping piece and the second clamping piece to be separated from the highest gear groove to be buckled into the lowest gear groove in a switching mode.

The utility model discloses in, the gear groove is including supplying fastener one male draw-in groove one, supplying fastener two male draw-in groove two, the notch of draw-in groove one and draw-in groove two is the slope up, the notch direction of draw-in groove one and the notch direction of draw-in groove two set up relatively.

The utility model discloses in, fastener one and fastener two relative slope settings.

The utility model discloses in, switching structure makes fastener one and fastener two draw close the groove of moving back that breaks away from highest gear groove mutually including offering in the adjustment tank upper end, makes fastener one and fastener two keep the interlocking device, the protruding setting that draw close the state at adjustment tank lower extreme messenger fastener one and fastener two expand to buckle into the arch of keeping off of entering in lowest gear groove.

The utility model discloses in, interlocking mechanism is including locating the lockhole on the fastener one, locating the locking piece on the fastener two, the locking piece can the activity be detained and form the buckle cooperation in going into the lockhole.

The utility model discloses in, the slip guide slot has been seted up on the front of locating plate, all be equipped with the slip lug of slidable mounting at the slip guide slot on the both sides of slide.

The utility model discloses in, be equipped with screens one on the fastener one, be equipped with screens two on the fastener two, the both ends of elastic component insert respectively and install in screens one and screens two.

The utility model discloses in, the seat body includes the base, installs the supporting component on the base, locates the supporting component on the position adjustable cushion module, locate scalable folding pedal module on the supporting component, pedal module is located the below of cushion module, the support arm sets up on the rear end of supporting component, be equipped with in the supporting component and be used for driving the supporting component to adjust back of the chair inclination's carefree regulation structure.

The utility model discloses in, be equipped with the handrail assembly that can go up and down height-adjusting on the supporting component.

The utility model discloses in, be equipped with the headrest that can go up and down height-adjusting on the back of the chair.

The utility model has the advantages that: the utility model discloses be provided with high adjustment mechanism between support arm and the back of the chair, this high adjustment mechanism has a plurality of gear grooves that correspond not co-altitude, only need the pull back of the chair during use, make during fastener one detains the gear groove of required height with fastener two, can accomplish the regulation of back of the chair height, and easy to use can satisfy different size users 'operation requirement, has strengthened the travelling comfort of chair, and convenient to protect user's waist is experienced with the use that improves the user, is fit for extensive popularization and application. The utility model discloses in, go into respectively through fastener one and fastener two and realize the high location of the back of the chair in draw-in groove one and the draw-in groove two of same gear groove, rational in infrastructure stable, positional stability is high, has guaranteed the balance of slide both sides simultaneously, and the slide of being convenient for slide on the locating plate adjusts, effectively strengthens the smoothness nature of height adjusting mechanism during operation. Additionally, the utility model discloses in, handrail components, headrest, cushion module all can the adjusting position, can further strengthen the travelling comfort of chair and improve user's use and experience, are fit for extensive popularization and application.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

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

FIG. 2 is a first schematic structural view of the height adjustment mechanism;

FIG. 3 is a second schematic structural view of the height adjustment mechanism;

FIG. 4 is a schematic diagram of the operation of the switching mechanism;

FIG. 5 is a side view of the present embodiment;

FIG. 6 is an exploded view of the cushion frame and the slide carriage;

fig. 7 is a schematic view of the combination of the cushion frame and the sliding seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Referring to fig. 1-4, the lifting chair structure with the adjustable chair back comprises a chair body and a chair back 10, wherein a supporting arm 1 used for being connected with the chair back 10 is arranged on the chair body, a height adjusting mechanism 100 is arranged on the supporting arm 1, the height adjusting mechanism 100 comprises a positioning plate 2 fixed on the supporting arm 1 and a sliding plate 3 fixed on the chair back 10, and the sliding plate 3 is in vertical sliding connection with the positioning plate 2; an adjusting groove 4 is formed in the positioning plate 2, and a plurality of gear grooves 5 are formed in the adjusting groove 4 and are sequentially arranged from top to bottom; articulated on the back of slide 3 have the fastener one 6 and the fastener two 7 that are located adjustment tank 4, be equipped with between fastener one 6 and the fastener two 7 and drive fastener one 6 and fastener two 7 and block into the elastic component 8 in same gear groove 5, be equipped with in the adjustment tank 4 and drive fastener one 6 and fastener two 7 and break away from in order to switch the switching structure who detains to minimum gear groove 5 from highest gear groove 5.

In the above structure, referring to fig. 2 to 4, the gear groove 5 includes a first clamping groove 51 for inserting the first clamping piece 6 and a second clamping groove 52 for inserting the second clamping piece 7, the first clamping groove 51 and the second clamping groove 52 are respectively disposed on two opposite sides of the adjusting groove 4, both the notches of the first clamping groove 51 and the second clamping groove 52 are inclined upward, and the direction of the notch of the first clamping groove 51 and the direction of the notch of the second clamping groove 52 are opposite. In addition, the first clamping piece 6 and the second clamping piece 7 are hinged to be installed on the same hinge hole of the sliding plate 3, the elastic piece 8 is located between the first clamping piece and the second clamping piece, the first clamping piece 6 and the second clamping piece 7 are arranged in a relatively inclined mode, and therefore the first clamping piece 6 and the second clamping piece 7 can be clamped into the first clamping groove 51 and the second clamping groove 52 of the same gear groove 5 respectively, and the height of the chair back 10 is located.

As a preferred embodiment, referring to fig. 2 to 4, the switching structure includes a shift-back groove 41 opened at the upper end of the adjustment groove 4 to make the first clip 6 and the second clip 7 approach each other and separate from the highest shift groove 5, an interlocking mechanism to keep the first clip 6 and the second clip 7 in a close state, and a shift-in protrusion 42 protruding at the lower end of the adjustment groove 4 to make the first clip 6 and the second clip 7 spread and snap into the lowest shift groove 5. When the first clamping piece 6 and the second clamping piece 7 enter the gear withdrawing groove 41, the first clamping piece 6 and the second clamping piece 7 are mutually close to be separated from the highest gear groove 5, and at the moment, the first clamping piece 6 and the second clamping piece 7 are kept close by an interlocking mechanism, so that the first clamping piece 6 and the second clamping piece 7 cannot be unfolded and buckled into other gear grooves 5 between the highest gear groove 5 and the lowest gear groove 5 in the process that the first clamping piece 6 and the second clamping piece 7 move downwards to the lowest gear groove 5; after the first clamping piece 6 and the second clamping piece 7 keep close and move from the highest gear groove 5 to the lowest gear groove 5, the interlocking mechanism is unlocked through the blocking protrusion 42, so that the first clamping piece 6 and the second clamping piece 7 can be unfolded and buckled to the lowest gear groove 5.

In this embodiment, referring to fig. 2 to 4, the interlocking mechanism includes a lock hole 61 disposed on the first clamping piece 6 and a lock block 71 disposed on the second clamping piece 7, the shift-back groove 41 is provided with a first cut-in surface 411 in contact fit with the first clamping piece 6 and a second cut-in surface 412 in contact fit with the second clamping piece 7, the first clamping piece 6 and the second clamping piece 7 gradually approach each other under the action of the first cut-in surface 411 and the second cut-in surface 412, so that the lock block 71 is buckled into the lock hole 61 to form a snap fit, and the first clamping piece 6 and the second clamping piece 7 are kept in a close state; the blocking protrusion 42 is provided with a first blocking inclined surface 421 in contact fit with the first clamping piece 6 and a second blocking inclined surface 422 in contact fit with the second clamping piece 7, and when the first clamping piece 6 and the second clamping piece 7 are unfolded along the inclined directions of the first blocking inclined surface 421 and the second blocking inclined surface 422 respectively, the locking block 71 is separated from the locking hole 61, so that the first clamping piece 6 and the second clamping piece 7 can be buckled into the lowest gear groove 5.

In a preferred embodiment, referring to fig. 3, a sliding guide groove 21 is formed on a front surface of the positioning plate 2, and sliding protrusions 31 slidably mounted in the sliding guide groove 21 are formed on both sides of the sliding plate 3, so that the positioning plate 2 and the sliding plate 3 are slidably mounted. Further, in order to improve the quality of the sliding fit between the positioning plate 2 and the sliding plate 3, a sliding convex edge 32 is convexly arranged on the front surface of one of the sliding convex blocks 31, the sliding convex block 31 and the sliding convex edge 32 form a reinforced guide groove in a combined manner, and the positioning plate 2 is provided with a guide edge 22 in sliding fit with the reinforced guide groove, so that the sliding guide effect between the guide groove and the guide edge 22 is enhanced.

As a preferred embodiment, a first clamping position is arranged on the first clamping part 6, a second clamping position is arranged on the second clamping part 7, and two ends of the elastic part 8 are inserted into the first clamping position and the second clamping position respectively so as to complete the installation of the elastic part 8. In addition, the elastic member 8 may be a spring or a spring plate, and in this embodiment, the elastic member 8 is preferably a spring.

Referring to fig. 1 and 5, the seat body includes a base 20, a support assembly 30 mounted on the base 20, a cushion module 40 disposed on the support assembly 30 and adjustable in position, and a collapsible footrest module 50 disposed on the support assembly 30, wherein the footrest module 50 is disposed below the cushion module 40, the support arm 1 is disposed at the rear end of the support assembly 30, and a rocking adjustment mechanism for driving the support assembly 30 to adjust the tilt angle of the seat back 10 is disposed in the support assembly 30. Further, the support assembly 30 includes a front support frame 301 installed on the base 20, a rear support frame 302 movably connected to the front support frame 301, and an upper support frame 303, the front support frame 301 is hinged to a linkage 304, the rear support frame 302 is movably connected to the rear end of the front support frame 301, a front hinge portion hinged to the linkage 304 and a rear hinge portion hinged to the rear support frame 302 are disposed on the bottom of the upper support frame 303, the front support frame 301, the rear support frame 302, the upper support frame 303 and the linkage 304 form a linkage mechanism for adjusting the inclination angle of the chair back 10, the free adjustment structure is disposed in the support assembly 30 so as to drive the linkage mechanism, and the structure of the free adjustment structure can refer to the utility model patent No. 202021897692.1, so that no specific description is provided.

As a preferable embodiment, referring to fig. 5 to 7, the cushion module 40 includes a cushion frame 401 and a cushion body 402 disposed on the cushion frame 401, a sliding groove 403 is disposed on the cushion frame 401, a sliding seat 9 is disposed on the top of the support member 30, the sliding seat 9 is mounted on the upper support frame 303, a sliding portion 91 is disposed on the sliding seat 9, and the sliding portion 91 is inserted into the sliding groove 403, so that the cushion module 40 can move back and forth along the length direction of the sliding groove 403 under the action of the sliding groove 403 and the sliding portion 91, thereby adjusting the position of the cushion module 40. Further, a locking mechanism 90 for fixing the cushion module 40 after adjusting the position is arranged between the cushion frame 401 and the slide carriage 9, the slide carriage 9 is provided with a plurality of limiting grooves 92 for matching with the locking mechanism 90, the limiting grooves 92 are sequentially arranged on the slide carriage 9 from front to back, the locking mechanism 90 comprises a driving box 901 and a bayonet piece 902, the bottom of the cushion frame 401 is provided with a mounting groove, the driving box 901 is mounted in the mounting groove, the bayonet piece 902 is slidably connected to the driving box 901, the driving box 901 is provided with a driving groove, the driving groove is internally provided with a driving spring for driving the bayonet piece 902 to match with the limiting grooves 92, one end of the bayonet piece 902 is provided with an insertion part inserted into the limiting grooves 92, and the other end 902 is provided with a pull ring 903 for pulling the bayonet piece to separate the insertion part from the limiting grooves 92.

As a preferred embodiment, referring to fig. 1 and 5, a connection portion extends from a rear end of the rear support frame 302, a slot is opened at a lower end of the support arm 1, and the connection portion is inserted into the slot and fixed by a fastener, thereby completing the detachable installation of the support arm 1.

As a preferred embodiment, the pedal module 50 includes a telescopic rod and a pedal hinged to the front end of the telescopic rod, the bottom of the cushion frame 401 is provided with a telescopic slot, the telescopic rod is slidably mounted in the telescopic slot, and when the telescopic rod is slidably inserted into the telescopic slot and the pedal is rotated and folded, the pedal module 50 is folded and stored below the cushion module 40, so as to avoid affecting the normal use of the lifting chair.

As a preferred embodiment, referring to fig. 1 and 5, the support assembly 30 is provided with a handrail assembly 60 capable of adjusting height in an up-and-down manner, the handrail assembly 60 is specifically disposed on the rear support frame 302, and the height of the hand supporting the handrail assembly 60 can be adjusted, so as to meet the hand placing requirements of different consumers and make the use more comfortable. The structure of the armrest assembly 60 for performing the lifting operation is disclosed in utility model patent No. 202021897692.1, and therefore will not be described in detail.

Referring to fig. 5, as a preferred embodiment, the seat back 10 includes a seat back frame 101 fixed on the front surface of the slide board 3 and a seat back cushion 102 provided on the front surface of the seat back frame 101. Be equipped with headrest 70 that can go up and down to adjust height on the back of the chair 10, be equipped with the headrest height adjusting device who is used for adjusting headrest 70 height from top to bottom on the back of the chair 10, headrest height adjusting device 80 adjusts seat 701, slidable mounting headrest support 702 on headrest adjustment seat 701 including the headrest of connecting on back of the chair frame 101, be equipped with the screens mechanism that locking headrest 70 height-adjusting was adjusted between headrest support and the headrest adjustment seat, headrest 70 articulates on the headrest support, the headrest support can reciprocate to adjust headrest 70's height.

The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.

Claims

1. The utility model provides a back of chair adjustable lift chair structure, includes seat body, back of the chair (10), be equipped with support arm (1) that are used for connecting back of the chair (10) on the seat body, its characterized in that: the supporting arm (1) is provided with a height adjusting mechanism (100), the height adjusting mechanism (100) comprises a positioning plate (2) fixed on the supporting arm (1) and a sliding plate (3) fixed on the chair back (10), and the sliding plate (3) is in vertical sliding connection with the positioning plate (2); an adjusting groove (4) is formed in the positioning plate (2), and a plurality of gear grooves (5) are arranged in the adjusting groove (4) from top to bottom in sequence; articulated on the back of slide (3) have fastener (6) and fastener two (7) that are located adjustment tank (4), be equipped with between fastener (6) and fastener two (7) drive fastener (6) and fastener two (7) and block into elastic component (8) in same gear groove (5), it breaks away from in order to switch the switching structure who detains to minimum gear groove (5) to drive fastener (6) and fastener two (7) from highest gear groove (5) to be equipped with in adjustment tank (4).

2. The chair back adjustable lift chair structure of claim 1, wherein: the gear groove (5) comprises a first clamping groove (51) for inserting the first clamping piece (6) and a second clamping groove (52) for inserting the second clamping piece (7), the notches of the first clamping groove (51) and the second clamping groove (52) are inclined upwards, and the notch direction of the first clamping groove (51) and the notch direction of the second clamping groove (52) are arranged oppositely.

3. The chair back adjustable lift chair structure of claim 1, wherein: the first clamping piece (6) and the second clamping piece (7) are arranged in a relatively inclined mode.

4. The chair back adjustable lift chair structure of claim 1, wherein: the switching structure comprises a gear withdrawing groove (41) which is arranged at the upper end of the adjusting groove (4) and enables the first clamping piece (6) and the second clamping piece (7) to mutually draw close to separate from the highest gear groove (5), an interlocking mechanism which enables the first clamping piece (6) and the second clamping piece (7) to keep a drawing close state, and a gear advancing protrusion (42) which is arranged at the lower end of the adjusting groove (4) and enables the first clamping piece (6) and the second clamping piece (7) to be unfolded and buckled into the lowest gear groove (5).

5. The chair back adjustable lift chair structure of claim 4, wherein: the interlocking mechanism comprises a lock hole (61) arranged on the first clamping piece (6) and a lock block (71) arranged on the second clamping piece (7), and the lock block (71) can be movably buckled into the lock hole (61) to form a snap fit.

6. The chair back adjustable lift chair structure of claim 1, wherein: the front surface of the positioning plate (2) is provided with a sliding guide groove (21), and the two sides of the sliding plate (3) are respectively provided with a sliding lug (31) which is slidably arranged in the sliding guide groove (21).

7. The chair back adjustable lifting chair structure as claimed in any one of claims 1 to 6, wherein: the clamping device is characterized in that a first clamping position is arranged on the first clamping part (6), a second clamping position is arranged on the second clamping part (7), and two ends of the elastic part (8) are inserted into the first clamping position and the second clamping position respectively.

8. The chair back adjustable lifting chair structure as claimed in any one of claims 1 to 6, wherein: the seat body includes base (20), installs supporting component (30) on base (20), locate position adjustable cushion module (40) on supporting component (30), locate scalable folding pedal module (50) on supporting component (30), pedal module (50) are located the below of cushion module (40), support arm (1) sets up on the rear end of supporting component (30), be equipped with in supporting component (30) and be used for driving supporting component (30) and adjust the structure is adjusted to the ease of back of the chair (10) inclination.

9. The chair back adjustable lift chair structure of claim 8, wherein: the supporting component (30) is provided with a handrail component (60) which can be lifted and adjusted in height.

10. The chair back adjustable lifting chair structure as claimed in any one of claims 1 to 6, wherein: the chair back (10) is provided with a headrest (70) which can be lifted and lowered to adjust the height.