CN201870134U

CN201870134U - Longitudinal adjusting bracket for backrest

Info

Publication number: CN201870134U
Application number: CN201020555883XU
Authority: CN
Inventors: 陈国光
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-06-22
Anticipated expiration: 2020-09-30

Abstract

The utility model belongs to the technical field of furniture manufacturing, in particular relates to a longitudinal adjusting bracket for a backrest. The longitudinal adjusting bracket comprises a group of guide rails (1) which is mounted at the bottom and can extend and retract forwards and backwards, and upright posts (2) mounted on movable rails (11) of the guide rails (1); and a backrest is mounted on the upright posts (2). The longitudinal adjusting bracket is characterized in that a rear beam (3) is arranged on fixed rails (10) of the guide rails (1); a front beam (4) is arranged on the movable rails (11) of the guide rails (1); a multi-gear flat foot hinge is mounted between the front beam and the rear beam; the backrest can be positioned forwards and backwards in different positions through the multi-gear flat foot hinge; and the multi-gear flat foot hinge comprises a grooved rail (5), a pull rod (6), a lock tongue (7), a slide block (8) and a spring (9). By adopting the longitudinal adjusting bracket for the backrest, a user can adjust the longitudinal position of the backrest as required, so as to improve the comfort property.

Description

Regulate support before and after a kind of backrest

Technical field

The utility model belongs to technical field of furniture manufacturing, is specifically related to regulate support before and after a kind of backrest.

Background technology

Existing sofa seat, backrest all are to be fixedly mounted on the seat support usually, the sofa seat of this structure, because structure is fixed, when the user of different heights used, possible difficulty reached best sitting posture state.At present, though the adjustable sofa seat of backrest is also arranged, only limit to regulate backrest hypsokinesis angle, and can not regulate the backrest front and back position, the main purpose of this seat design is the different sitting posture states that adapt to the user, during such as work, regulates inclination of the seat backrest less; During rest, with inclination of the seat backrest regulate bigger, can lie to go up on the sofa and have a rest, improve the function of seat, but do not solve the problem that the backrest front and back position is regulated.

The utility model content

The purpose of this utility model is to provide a kind of user can adjust the backrest front and back position as required, improves the backrest front and back of comfortableness and regulates support.

The purpose of this utility model is regulated support before and after being achieved in that a kind of backrest, comprise be installed in the bottom can be elastic one group of guide rail (1), be installed in the column (2) on the movable rail (11) of guide rail (1), backrest is installed on the column (2), it is characterized in that: the retaining rail (10) of described guide rail (1) is provided with a rear cross beam (3), the movable rail (11) of guide rail (1) is provided with a front beam (4), many grades one word hinges are installed, diverse location before and after by many grades one word hinges backrest being positioned between forward and backward crossbeam.

Described many grades one words hinge comprises grooved rail (5), pull bar (6), dead bolt (7), slide block (8) and spring (9), offer chute (50) on the grooved rail (5), the postmedian of chute (50) offers location helical teeth (51), described pull bar (6) is installed in the grooved rail (5), the rear end of pull bar (6) offers the installation position (60) of setting-in dead bolt (7), and the front end of installation position (60) is button bit (600); Described dead bolt (7) has front end tongue (70), rear end bayonet lock (71) and interfix hole (72); Described slide block (8) middle part is a cavity, the rear end has the screens (80) of ccontaining bayonet lock (71), wherein, the tongue (70) of dead bolt (7) is interlocked with button bit (600), spring one end is resisted against on the interfix hole (72), the other end is resisted against the sidewall of installation position (60), and slide block (8) is installed in the bottom of dead bolt (7) and the cavities that bayonet lock (71) is arranged in slide block (8).

The grooved rail (5) and the pull bar (6) of described many grades one words hinge are fastenedly connected on rear cross beam (3) and front beam (4) by the screw that is arranged on the end respectively.

Described many grades one words hinge is ten grade of one word hinge.

Good effect of the present utility model: many grades one word hinges are installed between forward and backward crossbeam, this structural design, the tensile elongation of regulating many grades one words hinge just can adjusting activity rail on retaining rail extension elongation and position, thereby adjusting is installed in the column on the movable rail and is installed in the front and back position of the backrest on the column.Regulate support before and after adopting this structure backrest, can regulate the front and back position of backrest very easily, the people who is fit to different heights uses, and because many grades one word hinges have many grades of adjustings, in adjustment process, the front and back position of backrest can be realized fine setting, does not have tangible jump process.

Many grades one word hinges adopt ten grade of one word hinge, and front and back position has ten grades, the degree of regulation height.

Description of drawings

Fig. 1 is that the support stereogram is regulated in the backrest front and back of many grades one word hinge extended states;

Fig. 2 is that the support stereogram is regulated in the backrest front and back of many grades one word hinge contraction states;

Fig. 3 regulates the support front view before and after the backrest;

Fig. 4 is ten grade of one word hinge stereogram;

Fig. 5 is ten grade of one word hinge STRUCTURE DECOMPOSITION figure.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of regulating support before and after the backrest described in the utility model is described in further detail.

Embodiment: shown in Fig. 1-5, regulate support before and after the backrest described in the utility model, mainly by be installed in the bottom can be elastic one group of guide rail 1, the column 2 that is installed on the movable rail 11 of guide rail 1 form, backrest is installed on the column 2.The retaining rail 10 of guide rail 1 is provided with a rear cross beam 3, the movable rail 11 of guide rail 1 is provided with a front beam 4, and many grades one word hinges are installed between forward and backward crossbeam, can be one, also can about parallel be provided with two, diverse location before and after by many grades one words hinges backrest being positioned at.Many grades one word hinges of present embodiment adopt ten grade of one word hinge, its structure mainly is made up of grooved rail 5, pull bar 6, dead bolt 7, slide block 8 and spring 9, offer chute 50 on the grooved rail 5, the postmedian of chute 50 evenly offers ten location helical teeth 51, pull bar 6 is installed in the grooved rail 5, the rear end of pull bar 6 offers the installation position 60 of setting-in dead bolt 7, and the front end of installation position 60 is a button bit 600; Dead bolt 7 has front end tongue 70, rear end bayonet lock 71 and interfix hole 72; Slide block 8 middle parts are cavity, the rear end has the screens 80 of ccontaining bayonet lock 71, wherein, the tongue 70 and the button bit 600 of dead bolt 7 are interlocked, spring one end is resisted against on the interfix hole 72, the other end is resisted against the sidewall of installation position 60, and slide block 8 is installed in the bottom of dead bolt 7 and the cavities that bayonet lock 71 is arranged in slide block 8.

Regulate support before and after the backrest of the present utility model, can be used for the armchair seat, on many person sofas seat, be installed on the bottom support frame of sofa seat, the backrest adjustment process is as follows: the backrest that will be installed on the column 2 pushes away forward, the pull bar 6 that makes ten grade of one word hinge is toward protracting, stop to promote after being adjusted to correct position, at this moment, the tongue 70 of dead bolt 7 is fastened on the button bit 600, dead bolt 7 is under the elastic force effect of spring 9, make rear end bayonet lock 71 be resisted against the recess interior (lever principle) of helical teeth 51, realize the location, because helical teeth 51 has directionality, therefore can only unidirectionally move ahead, when carrying out front end, when needing the back readjustment, then need backrest is pushed into earlier foremost, owing to have foremost and a bit ofly do not have helical teeth 51 apart from chute 50, between this a bit of distance, rear end bayonet lock 71 is limited, the elastic force of spring 9 can't work, and when reaching foremost when pushing back, bayonet lock 71 has been stuck in 80 li of the screens of slide block 8 again, even dead bolt 7 retreats to 51 sections of helical teeth, because the effect of screens 80, dead bolt 7 still can't rotate under the effect of spring 9, and can pull back to rearmost end this moment always, optional position in the process of pulling back, as long as backup is forward carried on the back again, the screens of bayonet lock 71 disengaging slide blocks 8 is after 80s, just can regulate the location to the front and back position of backrest once more.

Claims

1. regulate support before and after a backrest, comprise be installed in the bottom can be elastic one group of guide rail (1), be installed in the column (2) on the movable rail (11) of guide rail (1), backrest is installed on the column (2), it is characterized in that: the retaining rail (10) of described guide rail (1) is provided with a rear cross beam (3), the movable rail (11) of guide rail (1) is provided with a front beam (4), many grades one word hinges are installed, diverse location before and after by many grades one word hinges backrest being positioned between forward and backward crossbeam.

2. according to regulating support before and after the described backrest of claim 1, it is characterized in that: described many grades one words hinge comprises grooved rail (5), pull bar (6), dead bolt (7), slide block (8) and spring (9), offer chute (50) on the grooved rail (5), the postmedian of chute (50) offers location helical teeth (51), described pull bar (6) is installed in the grooved rail (5), the rear end of pull bar (6) offers the installation position (60) of setting-in dead bolt (7), and the front end of installation position (60) is button bit (600); Described dead bolt (7) has front end tongue (70), rear end bayonet lock (71) and interfix hole (72); Described slide block (8) middle part is a cavity, the rear end has the screens (80) of ccontaining bayonet lock (71), wherein, the tongue (70) of dead bolt (7) is interlocked with button bit (600), spring one end is resisted against on the interfix hole (72), the other end is resisted against the sidewall of installation position (60), and slide block (8) is installed in the bottom of dead bolt (7) and the cavities that bayonet lock (71) is arranged in slide block (8).

3. according to regulating support before and after the described backrest of claim 2, it is characterized in that: the grooved rail (5) and the pull bar (6) of described many grades one words hinge are fastenedly connected on rear cross beam (3) and front beam (4) by the screw that is arranged on the end respectively.

4. according to regulating support before and after claim 1 or the 2 or 3 described backrests, it is characterized in that: described many grades one words hinge is ten grade of one word hinge.