CN103371657A

CN103371657A - Office seat

Info

Publication number: CN103371657A
Application number: CN201210126742XA
Authority: CN
Inventors: 蔡芳华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2013-10-30

Abstract

The invention relates to seat furniture and particularly relates to an office seat provided with a backrest with a waist support (1). In order to improve the comfort and the simplicity of using the seat furniture, the waist support (1) is arranged on a flexible guide belt (4) in a height adjustable manner.

Description

Office seats

Technical field

The present invention relates to chair, particularly have the office seats with the backrest of lumbar support.

Background technology

The existing lumbar support that is installed on the backrest has the quite low shortcoming of flexibility.And then use lumbar support often to cause applying uncomfortable pressure on some point of back of people on the seat.In addition, known lumbar support only can be adjusted height in little adjusting range.

Summary of the invention

The objective of the invention is to improve comfortableness and the simplification of using chair.This target can adopt chair as claimed in claim 1 to obtain.

Basic thought of the present invention is that the mode with height-adjustable arranges lumbar support at the flexible guide band., at the flexible guide band lumbar support is set and has such advantage from the technology that the known fastening seat of prior art supports with respect to those: on the one hand, change especially easily the position that seat supports.Therefore, for example, if lumbar support is clamped on the pilot tape, it can adjust height by direct displacement.On the other hand, the flexible structure of pilot tape avoids that people's back bears too many pressure on the seat.In other words, lumbar support is out of shape because of the institute of the people on seat applied pressure, has greatly improved thus the seat comfort degree.

Description of drawings

Reference implementation mode, and under the help of figure is introduced favourable embodiment of the present invention more in detail hereinafter, wherein:

Fig. 1 illustrates the side sectional view of the backrest of the office seats with lumbar support;

Fig. 2 illustrates the perspective view of the lumbar support among the figure l;

Fig. 3 illustrates among Fig. 2 the side sectional view with the lumbar support of supporter;

Fig. 4 illustrates the perspective view of backrest among the figure l.

Indicate among the figure: 1, lumbar support; 2, supporter; 3, strap retainer; 4, pilot tape; 5, keep shell; 6, securing member; 7, rear side; 8, clamping balls; 9, guiding wall; L0, clamping bar; 11, vertical direction; L2, pressure direction; L3, backrest; L4, bearing part; 15, assembly parts; 16, keeping arm; 17, intermediate bracket; 18, bottom transverse support; 19, framework; 20, side stay frame; 2l, top cross support; 22, securing member; 23, top; 24, top fastening point; 25, bottom fastening point; 26, the fastening support in top; 27, fixator; 28, operating mechanism; 29, the fastening support in bottom; 30, clamp jaw; 31, clamp support; 32, clamping bar; 33, clamping slot; 34, lead-frame; 35, groove; 36, clamping bar end; 37, rear side; 38, sidepiece.

The specific embodiment

Lumbar support l mainly comprises supporter 2 and the strap retainer 3 that is fastened thereon.Strap retainer 3 is used at the fixing lumbar support l of pilot tape 4.For clear, figure does not describe whole supporter l in l～4, but only describes the maintenance shell 5 that is used for holding real lumbar pad.Be positioned at the securing member 6 that keeps on the shell 5 and be used for fixedly lumbar pad.

The rear side 7 of supporter 2 is positioned at the reverse side of the position of putting afterwards lumbar pad, on this recessed rear side 7, supporter have two substantial horizontal trends and ask in vertical direction every clamping balls 8.On the rear side 7 of supporter 2, strap retainer 3 is installed in the zone of these clamping balls 8.Strap retainer 3 comprises the side guiding wall 9 of two capwises, and it is interconnected with one another by clamping bar l0.The clamping bar 10 here is spaced apart with the rear side 7 of supporter 2 so that pilot tape 4 on the one hand two clamping balls 8 and clamping bar on the other hand 10 between can be threaded into strap retainer 3.The pilot tape 4 here, clamping balls 8 and clamping bar l0 locate and definite size each other, so that on pilot tape 4 total Xiang Zaisan points, namely withstand clamping balls 8 and clamping bar 10.In other words, clamping balls 8 and clamping bar l0 form at 3 and clamp layout.Because this friction grip that exists with the lock pawl form, this lumbar support l is maintained on the pilot tape 4, and can guide up or down lumbar support l on pilot tape 4 by direct displacement, and this allows in the vertical direction to realize adjusting on 11.

Pilot tape 4 is by the flexible plastic-type material manufacturing.The hardness of plastic material, and the flexibility of the pilot tape 4 that determines thus can be adjusted in variable mode in its production process.Depend on user's requirement or according to the filler type that is used in the lumbar pad, pilot tape 4 can be designed to harder or softer, so that the people on the seat is during to its imposed load, it can more or less distortion on pressure direction 12.

Pilot tape 4 is fixed on the backrest 13 of office seats.Backrest 13 has central bearing part 14, has assembly parts 15 in the bottom of bearing part 14, is used for being fixed on the seat member (not shown).Upwardly extending two keeping arm l6 are installed on the bearing part 14 in the side of seat member.Above this keeping arm 16, intermediate bracket 17 extends out from bearing part l 4 on the seat member direction, and the bottom transverse support l8 of framework 19 is fixed on the end of intermediate bracket l7.Bottom transverse support l 8 is connected on the top cross support 21 by two side stay framves 20.The horizontal support of napex is connected to again central bearing part 14 in the centre

Top 23.

Be provided with securing member 22 at framework l9, be used for the fixing backrest material at framework l9, for example net or packing component, and therefore form actual backrest.

Pilot tape 4 in ask between the top 23 of carriage 17 and bearing part 14 at the central bearing part l4 of backrest and be fixed on top fastening point 24 and leave on the bottom fastening point 25 of top fastening point 24 certain distances.This has guaranteed level, the lateral position of supporter 2.According to the position of the central bearing part 14 of backrest, in the middle of supporter 2 is positioned at respect to the back (not shown) of people on the seat.

At top fastening point 24 places, fix a point, be fastened on the bearing part 14 movably in the top of pilot tape 4.For this purpose, the fastening support 26 of napex that is located at pilot tape 4 tops rotatably is connected on the fixator 27 that is fixed on the bearing part 14.On the contrary, the position of the bottom fastening point 25 of pilot tape 4 can change on 11 in the vertical direction by the mode of operating mechanism with locking.In the fixed position of this locking, the fastening support 29 in bottom that is arranged on pilot tape 4 bottoms is jammed under the effect of clamp jaw 30 firmly, and is leaning the clamping support 31 that is installed on the central bearing part 14.By discharging clamping bar 32, can eliminate described clamping action, and the fastening support 29 in bottom can be moved into and clamps in one of them clamping slot 33 that departs from vertical direction that supports on 31 other.Clamp it by the again actuating of clamping bar 32 there.In order to protect pilot tape 4, its bottom is arranged in the lead-frame 34 of sealing, prevents that when clamping bar 32 was released, the bottom of pilot tape 4 was removed from locking.

In order to change the prestressing force of pilot tape 4, the clamping bar 32 of clamp mechanism is located in the groove 35 of capwise of central bearing part 14.Under the state of this sealing, clamping bar end 36 only exceeds to Min. or does not exceed fully the rear side 37 of bearing part 14, discharges to avoid the accidental of clamp mechanism.Each only shows one of them sidepiece 38 of bearing part 14 Fig. 1～3, and another sidepiece is not illustrated.Sidepiece 38 surrounds described groove 35.Another sidepiece that is not illustrated comprises lead-frame and the fixator that is arranged on this sidepiece.

In all positions, pilot tape 4 is bearing certain prestressing force.On the one hand, this has guaranteed that supporter 2 is fixed on the pilot tape 4 reliably, and on the other hand, this has guaranteed can form enough large reaction force when the people on the seat exerts pressure to supporter 2.Under the effect of operating mechanism 28, by the distance between two

fastening point

24,25 that change the pilot tape 4 on the bearing part 14, and therefore change the radius of pilot tape 4, prestressed size can be set.In other words, because the prestressing force of pilot tape 4 can be changed, the contact of supporter 2 can be adapted to separately the requirement of the individual on the seat.Because the curved shape of pilot tape 4, the supporter 2 in the vertical direction Height Adjustment on the ll produce the change at supporter angle of inclination simultaneously.

Of the present invention another do not have the embodiment of elaboration, front side and/or rear side at pilot tape 4 are provided with waveform shape profile, so that carry out in the height adjustment process at supporter 2, clamping balls 8 and/or clamping bar 10 move along waveform profiles, and the user perceives the multistep adjustment occurs.

Although be not described in detail at this, use the basic inventive idea of the present invention and the embodiment that in specification, set forth, those skilled in the art can realize in a large number other embodiment.For this reason, should be noted that all features of setting forth in specification, claim and the accompanying drawing are all related to the present invention respectively, and can be each other make up in the mode of any hope.

Claims

1. a chair, particularly office seats is characterized in that: have the adjustable for height lumbar support (1) that is arranged on the flexible guide band (4).

2. office seats according to claim 1 is characterized in that: lumbar support (1) relies on clamp connection (8,10) to be fastened on the pilot tape (4).

3. office seats according to claim 1 is characterized in that: pilot tape (4) is installed on the central bearing part (14) of backrest (13) of chair.

4. described office seats one of according to claim 1-3, it is characterized in that: pilot tape (4) is by prestress.

5. office seats according to claim 4 is characterized in that, the prestressing force that changes pilot tape (4) is possible.