CN2922624Y

CN2922624Y - Adjusting improved structure of chair back

Info

Publication number: CN2922624Y
Application number: CN 200620112269
Authority: CN
Inventors: 王自强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2007-07-18
Anticipated expiration: 2016-05-18

Abstract

The utility model relates to an adjusted and improved structure for backrest of chairs, wherein essentially, two main brackets in muff coupling and a coupling seat are provided slanchwise between the backrest frame and the cushion frame; a limit component that protrudes downwards is provided at downside the middle section of the main brackets and an elastic positioning component protrudes from topside of the middle section of the main brackets; the coupling seat is provided with a guide channel that extends longitudinally from downside of the opening at one end of the coupling seat where the coupling seat joins together with the main bracket; the guide channel allows the limit component of the main brackets to dive in and guides the slippage of the limit component; a plurality of positioning dents are provided longitudinal arrangement at topside of the coupling seat, and the positioning dents allow the elastic slippage of the positioning component of the main brackets; through a shaft lever provided with a rotary handle, a positioning mechanism transversely penetrates middle part of the coupling seat; at least one locking component provided with a protruding convex part is provided in middle part of the shaft lever in such a manner that the locking component follows rotation of the shaft lever so that the protruding convex part presses side surface of the main brackets for positioning purposes.

Description

The adjustment structure-improved of Chair back

Technical field

The utility model relates to the adjustment structure-improved of Chair back, is meant especially a kind ofly to adapt to the different human body stature and the simple and easy structure of promptly adjusting the back support position and the seat cushion degree of depth.

Background technology

Traditional office seating, simpler and easy person, its seat cushion is adopted the combination that interfixes with combining of the chair back, and this kind structure can't have any adjustment action between the seat cushion and the chair back, and the comfortableness during seat is not good; And more progressive person, have seat cushion is combined with chair back pivot joint, and articulate position in it and support this chair back with an elastic parts, elastics wing backward when making this chair back stressed, to form the human body back support effect of similar rocking chair, its comfortableness of this kind structure is preferable, but can't adapt to the different human body stature and make back support in the optimum position, for taller and bigger or short and small user, still have the not good puzzlement of the back of the body, lumbar support, more progressive person, the seat cushion and the chair back must distinctly be adjusted, must leave seat cushion during operation can finish, and forms a defective of using.

Summary of the invention

Main purpose of the present utility model is to overcome the deficiencies in the prior art and defective, a kind of adjustment structure-improved of Chair back is proposed, it can change distance and the height of the chair back with respect to seat cushion simultaneously when operation, to adjust each support zone of seat, to reach the effect of best sitting posture according to human body stature difference.

Another purpose of the present utility model is, proposes a kind of adjustment structure-improved of Chair back, and it forms the with low cost of assembly, has preferable economic benefit.

A purpose more of the present utility model is, proposes a kind of adjustment structure-improved of Chair back, and its user when operation must not leave seat cushion and can adjust the back support position and the seat cushion degree of depth synchronously, and operation adjustment transfers to institute rapidly and simply must the position.

The utility model is for reaching above-mentioned purpose and effect, a kind of adjustment structure-improved of Chair back is provided, it comprises: a main support, be a hollow tubular, the oblique chairback brace below that is incorporated into, one end, be provided with a limit assembly that protrudes out downwards in this bottom side, main support stage casing, then protrude out the flexible positioning component of a tool in top side, main support stage casing; One nested base, be sleeved on the outer peripheral edges of this main support, the oblique chair cushion support side that is incorporated in one end, be provided with the guiding conduit of a longitudinal extension in the end opening bottom side that this nested base is connected with main support,, the limit assembly of this main support forms the guiding of slippage mutually between main support, nested base for stretching into, then be provided with the location indentations of a plurality of vertical arrangements in this nested base top side, replace the location for the positioning component elastic slip and the embedding of this main support top side; One location mechanism, the axostylus axostyle that revolves handle with a tool laterally runs through this nested base stage casing, be provided with the clip assembly that at least one tool projection is replaced protuberance in this axostylus axostyle stage casing, revolve drive this clip assembly rotation via axostylus axostyle by this, make and replace the table side that protuberance presses on main support, make this main support, nested base be positioned the extension position of this stretching.

The utility model has the advantages that and to adapt to the different human body stature and the simple and easy back support position and the seat cushion degree of depth promptly adjusted, reach best sitting posture, it forms the with low cost of assembly, has preferable economic benefit, its user when operation must not leave seat cushion and can adjust the back support position and the seat cushion degree of depth synchronously, and operation adjustment transfers to institute rapidly and simply must the position.

As for detailed construction of the present utility model, application principle, effect and effect, then the explanation of doing with reference to following adjoint can be understood completely.

Description of drawings

Fig. 1 is a structure decomposition map of the present utility model;

Fig. 2 is a part combination schematic diagram of the present utility model;

Fig. 3 is an entire combination schematic diagram of the present utility model;

Fig. 4 is an application scenarios schematic diagram of the present utility model;

Fig. 5 is a stretching schematic diagram of the present utility model;

Fig. 6 is an application scenarios schematic diagram of the present utility model;

Fig. 7 is a contractive action schematic diagram of the present utility model.

Symbol description among the figure

1 main support

12 locating holes

13 positioning seats

131 shrinkage pools

132,33 elastic parts

133 positioning components

14 bolts

141 nuts

15 non-slip nosings

16 cover plates

2 nested bases

21 location indentations

22 hollow-out parts

23 guiding conduits

24 perforations

The 25 hooks hole of pulling

3 detent mechanisms

31 axostylus axostyles

311 revolve handle

32 clip assemblies

321 replace protuberance

4 chairback braces

40 chair back

41 protuberances

5 chair cushion supports

50 seat cushions

The specific embodiment

Fig. 1 is a structure decomposition map of the present utility model, by it with reference to Fig. 2,3 part and entire combination schematic diagram, can clearly find out, the utility model mainly comprises: main support 1, nested base 2 and detent mechanism 3 etc. are partly, wherein this main support 1 is a hollow tube, the one end can be inserted by the protuberance 41 of the chairback brace oblique extension in 4 belows and be incorporated into chairback brace 4 belows, holding in addition of main support 1 then can be in conjunction with a cover plate 16, be provided with a perforation in this stage casing, main support 1 bottom side, can run through and screw togather a nut 141 for a bolt 14, then be provided with the groove of a longitudinal extension in this main support 1 top side, be provided with a locating hole 12 in this groove stage casing, can supply a ccontaining positioning seat 13, be provided with a shrinkage pool 131 in these positioning seat 13 top sides, in this shrinkage pool 131, be provided with the outwards certain hyte part 133 of pushing and pressing of an elastic parts 132, two non-slip nosings 15 with rough surface are arranged at main support 1 two other table sides, nested base 2 is sleeved on the outer peripheral edges of this main support 1 with an end, oblique chair cushion support 5 sides that are incorporated in its other end, be provided with the guiding conduit 23 of a longitudinal extension in the end opening bottom side that this nested base 2 is connected with main support 1, the nut 141 of this main support 1 can form main support 1 for stretch into, the guiding of 2 mutual slippages of nested base, be provided with a perforation 24 in these nested base 2 top face two sides, and side is provided with hollow-out parts 22 in this perforation 24, these nested base 2 end faces then are provided with the location indentations 21 of a plurality of vertical arrangements in positioning component 133 sliding paths of corresponding main support 1, detent mechanism 3 revolves with a tool and 311 axostylus axostyle 31 run through the perforation 24 of this nested base 2 and can be horizontally set at above nested base 2 stage casings, be provided with two in these axostylus axostyle 31 stage casings and have the clip assembly 32 that projection is replaced protuberance 321, be held in the default hook of these nested base nested base 2 sides hole 25 of pulling in this clip assembly 32 table sides and with an elastic parts 33 hooks, make this clip assembly 32 have an elasticity of replying.

Fig. 4,6 is application scenarios schematic diagram of the present utility model, by it with reference to Fig. 5,7 stretching, extension, the contractive action schematic diagram, working as the user as can be known complies with different statures and adjusts this chair back 40, the height of seat cushions 50 and apart from the time, via this chairback brace 4 (combining) with the chair back 40, the interlock of chair cushion support 5 (combining) with seat cushions 50, and can make this main support 1, nested base 2 produces the variation that stretches or shrink mutually, at this moment, the positioning component 133 of main support 1 can be in 21 springs of a plurality of location indentations slippage of nested base 2, and form clips in the location indentations 21 of embedding appropriate location, then, the user can stir revolving of this detent mechanism 3 and rotate 311 to order about this axostylus axostyle 31, via this this clip assembly 32 of axostylus axostyle 31 interlocks, can make and replace protuberance 321 presses on main support 1 two sides downwards by the hollow-out parts 22 of nested base 2 non-slip nosing 15, with this main support 1, nested base 2 is positioned the extension position of this stretching, so that this chair back 40, seat cushions 50 is positioned this adjusted height and distance.

The utility model is in practical application, and each location indentations 21 of this nested base 2 is not limited to general concave shape, and it also can be set as the perforation of the little position of tool hollow out in central authorities.

From the above mentioned as can be known, the adjustment structure-improved of the utility model Chair back has the facility of adjustment really and locatees certain effect.

The above only is a preferred embodiment of the present utility model, is not to be used for limiting the scope that the utility model is implemented.Be that all equalizations of being done according to the utility model claim change and modification, be all the utility model claim and contain.

Claims

1. the adjustment structure-improved of a Chair back is characterized in that, comprising:

One main support is a hollow tubular, and the oblique chairback brace below that is incorporated into, one end is provided with a limit assembly that protrudes out downwards in this bottom side, main support stage casing, then protrudes out the flexible positioning component of a tool in top side, main support stage casing;

One nested base, be sleeved on the outer peripheral edges of this main support, the oblique chair cushion support side that is incorporated in one end, be provided with the guiding conduit of a longitudinal extension in the end opening bottom side that this nested base is connected with main support,, the limit assembly of this main support forms the guiding of slippage mutually between main support, nested base for stretching into, then be provided with the location indentations of a plurality of vertical arrangements in this nested base top side, replace the location for the positioning component elastic slip and the embedding of this main support top side;

One location mechanism, the axostylus axostyle that revolves handle with a tool laterally runs through this nested base stage casing, be provided with the clip assembly that at least one tool projection is replaced protuberance in this axostylus axostyle stage casing, revolve drive this clip assembly rotation via axostylus axostyle by this, make and replace the table side that protuberance presses on main support, make this main support, nested base be positioned the extension position of this stretching.

2. the adjustment structure-improved of Chair back as claimed in claim 1, it is characterized in that, this positioning component is placed in the default shrinkage pool of a positioning seat, and in this shrinkage pool and have an elastic parts outwards to push against this positioning component, and this positioning seat runs through and is arranged in the default locating hole in main support top side.

3. the adjustment structure-improved of Chair back as claimed in claim 1 is characterized in that, this limit assembly is a bolt that screws togather mutually and a nut.

4. the adjustment structure-improved of Chair back as claimed in claim 1 is characterized in that, this main support table side compresses the more coarse non-slip nosing that the position is provided with can provide big frictional force with respect to the clip assembly of detent mechanism.

5. the adjustment structure-improved of Chair back as claimed in claim 1 is characterized in that, each location indentations central authorities of this nested base are the perforation shape of hollow out.

6. the adjustment structure-improved of Chair back as claimed in claim 1 is characterized in that, this main support stretches into the interior end avris of nested base in addition in conjunction with a cover plate.

7. the adjustment structure-improved of Chair back as claimed in claim 1 is characterized in that, the clip component table side of this detent mechanism is held in this nested base side with an elastic parts hook in addition, makes this clip assembly have an elasticity of replying after axostylus axostyle loosens.