CN213487919U

CN213487919U - Seat extends back convenient to adjust

Info

Publication number: CN213487919U
Application number: CN202022018364.6U
Authority: CN
Inventors: 卓苑岚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-06-22
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a chair extension backrest convenient to adjust, which relates to the field of chair backrests, and comprises a central backrest mechanism, wherein the central backrest mechanism comprises a central slider, the central slider is provided with a threaded hole, the central slider is connected on a threaded rod through the threaded hole, when the central backrest mechanism and the auxiliary backrest mechanism are adjusted, the threaded rod is rotated to drive the central backrest mechanism to do longitudinal position adjustment, the side wall connecting rods arranged at two sides of the central slider drive the auxiliary backrest mechanisms at two sides to do longitudinal movement along the sliding rod, the auxiliary backrest mechanisms at two sides are both provided with a rotary connecting block and a rotary bolt, the angle of the auxiliary backrest can be further adjusted, and the position fine adjustment of the auxiliary backrests at two sides is independently realized through the arrangement of an auxiliary backrest adjusting seat so as to achieve the best position state, the use of most crowds is facilitated, and the neck is perfectly attached through the plurality of backrests, so that the occurrence of fatigue and diseases is reduced.

Description

Seat extends back convenient to adjust

Technical Field

The utility model relates to a backrest field specifically is a seat extends back convenient to adjust.

Background

The back rest chair is produced in the north-south direction, and is more commonly used in the later generations. The chair surface is generally square, and is provided with a backrest and an arch-shaped head. The shape of the backrest chair is characterized in that the backrest has no armrest, and the backrest does not protrude. The back rest of such chairs come in different forms, and are known as "one-piece" chairs. The other is called a lamp hanging chair, and the cross beam of the lamp hanging chair is provided with two columns which are slightly tilted upwards just like a lamp post of a flip lamp, so the name is obtained.

The back of many office chairs in daily life is mostly movable mounting's structure now, but most extension backs all are fixed motionless, the people's of all sizes of being not convenient for use, and the back number is mostly one, can not laminate and the auxiliary stay whole neck, and the functionality is not enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seat extends back convenient to adjust to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a chair extension backrest convenient to adjust comprises a central backrest mechanism, wherein the central backrest mechanism comprises a central slider, a threaded hole is formed in the central slider, the central slider is connected to a threaded rod through the threaded hole in a threaded manner, lateral wall connecting rods are mounted on two sides of the central slider, the central slider is connected with two side auxiliary backrest mechanisms in a matched manner through the lateral wall connecting rods arranged on the two sides, a hinged seat is rotatably connected to the surface, close to the outer side, of the central slider, one end, far away from the central slider, of the hinged seat is fixedly connected with a central backrest, the auxiliary backrest mechanism comprises an auxiliary slider which is of a trapezoidal block structure, an inclined through hole is formed in the upper top surface of the auxiliary slider, the auxiliary slider is connected to a sliding rod in a sliding manner through the inclined through hole, a through hole is formed in the side surface of the auxiliary slider, and a lateral wall connecting, fixed mounting has the rotation connecting block on the supplementary slider keeps away from one side face of slide bar, it is provided with the rotation bolt to run through and rotate on the rotation connecting block, the seat is adjusted to the supplementary back of the one end fixedly connected with of rotation bolt, supplementary back is adjusted one side that the seat kept away from the rotation bolt and is installed supplementary back.

Furthermore, an open slot is formed in the plate surface of one side, away from the rotating bolt, of the auxiliary backrest adjusting seat, an adjusting threaded rod penetrates through the open slot, one end of the adjusting threaded rod is rotatably connected to the inner wall of the bottom of the open slot of the auxiliary backrest adjusting seat, and one end, away from the bottom, of the adjusting threaded rod is connected with a knob.

Furthermore, sliding connection has supplementary back in the open slot of supplementary back regulation seat, the back of supplementary back is provided with the fine setting slider, the fine setting slider runs through the setting on adjusting threaded rod, and fine setting slider and adjusting threaded rod threaded connection.

Furthermore, the one end of threaded rod runs through the installation crossbeam and is connected with the regulation handle, the one end that the installation crossbeam was kept away from to the threaded rod rotates and connects on the bottom bracket, coupling mechanism has been cup jointed to the bottom of threaded rod, coupling mechanism's both sides are provided with the hinge interface, and coupling mechanism passes through both sides hinge interface and both sides slide bar connection.

Furthermore, one end of the sliding rod, which is far away from the connecting mechanism, is fixedly connected to the mounting cross beam.

Furthermore, both ends of the mounting cross beam are provided with mounting clamps, and the tail end of each mounting clamp is provided with a mounting hole.

Compared with the prior art, the beneficial effects of the utility model are that: when adjusting center backrest mechanism and supplementary backrest mechanism, drive center backrest mechanism through rotating the threaded rod and do fore-and-aft position adjustment, the supplementary backrest mechanism that the lateral wall connecting rod that sets up through center slider both sides drove both sides is longitudinal movement along the slide bar, all be provided with on the supplementary backrest mechanism of both sides and rotate the connecting block and rotate the bolt, can further carry out the adjustment on the supplementary backrest angle, the setting of seat is adjusted to the supplementary backrest of rethread, realize the position fine setting of the supplementary backrest of both sides alone, so that reach the best position state, help most crowds' use, and through the perfect laminating neck of a plurality of backrests, reduce the emergence of fatigue and disease.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the center back rest mechanism of the present invention.

Fig. 3 is a schematic structural view of the middle auxiliary backrest mechanism of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the central slider and the side wall connecting rod of the present invention.

In the figure: 1-center backrest mechanism, 11-center slide block, 12-side wall connecting rod, 13-hinged seat, 14-center backrest, 2-auxiliary backrest mechanism, 21-auxiliary slide block, 22-rotary connecting frame, 23-rotary bolt, 24-auxiliary backrest adjusting seat, 25-adjusting threaded rod, 26-auxiliary backrest, 3-threaded rod, 4-slide rod, 5-connecting mechanism, 6-mounting cross beam, 7-bottom bracket and 8-mounting clamp.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1 to 4, in an embodiment of the present invention, an adjustable chair extension backrest includes a central backrest mechanism 1, the central backrest mechanism 1 includes a central slider 11, a threaded hole is formed on the central slider 11, the central slider 11 is connected to a threaded rod 3 through the threaded hole, a side wall connecting rod 12 is installed on each side of the central slider 11, the central slider 11 is connected to two side auxiliary backrest mechanisms 2 through the side wall connecting rods 12, a hinge base 13 is rotatably connected to a surface of the central slider 11 close to an outer side, a central backrest 14 is fixedly connected to an end of the hinge base 13 far from the central slider 11, the auxiliary backrest mechanisms 2 include auxiliary sliders 21, the auxiliary sliders 21 are trapezoidal block structures, oblique through holes are formed on top surfaces of the auxiliary sliders 21, the auxiliary sliders 21 are slidably connected to a sliding rod 4 through the oblique through holes, be provided with through hole on the side of supplementary slider 21, and the through hole through connection of supplementary slider 21 has lateral wall connecting rod 12, fixed mounting has rotation connecting block 22 on the supplementary slider 21 one side face of keeping away from slide bar 4, it is provided with rotation bolt 23 to run through and rotate on the rotation connecting block 22, the one end fixedly connected with of rotation bolt 23 assists back regulation seat 24, the supplementary back is adjusted one side that seat 24 kept away from rotation bolt 23 and is installed supplementary back 26.

The auxiliary backrest adjusting seat 24 is provided with an open slot on the side plate surface far away from the rotating bolt 23, an adjusting threaded rod 25 penetrates through the open slot, one end of the adjusting threaded rod 25 is rotatably connected to the inner wall of the bottom of the open slot of the auxiliary backrest adjusting seat 24, and the end, far away from the bottom, of the adjusting threaded rod 25 is connected with a knob.

Sliding connection has supplementary back 26 in the open slot of supplementary back regulation seat 24, the back of supplementary back 26 is provided with the fine setting slider, the fine setting slider runs through the setting on adjusting threaded rod 25, and fine setting slider and adjusting threaded rod 25 threaded connection.

When adjusting center backrest mechanism 1 and supplementary backrest mechanism 2, drive center backrest mechanism 1 through rotating threaded rod 3 and do longitudinal position adjustment, supplementary backrest mechanism 2 that lateral wall connecting rod 12 that sets up through center slider 11 both sides drove both sides is longitudinal movement along slide bar 4, all be provided with on the supplementary backrest mechanism 2 of both sides and rotate connecting block 22 and rotation bolt 23, can further carry out the adjustment on supplementary backrest 26 angle, the setting of seat 24 is adjusted to the rethread supplementary backrest, realize the position fine setting of supplementary backrest 26 of both sides alone, so as to reach the best position state, help most crowds' use, and through the perfect laminating neck of a plurality of backrests, reduce the emergence of fatigue and disease.

Example 2:

referring to fig. 1 to 4, on the basis of embodiment 1, one end of the threaded rod 3 penetrates through the mounting beam 6 and is connected to an adjusting handle, one end of the threaded rod 3, which is far away from the mounting beam 6, is rotatably connected to the bottom bracket 7, the bottom of the threaded rod 3 is sleeved with a connecting mechanism 5, hinge interfaces are arranged on two sides of the connecting mechanism 5, and the connecting mechanism 5 is connected to the sliding rods 4 on two sides through the hinge interfaces on two sides.

And one end of the sliding rod 4, which is far away from the connecting mechanism 5, is fixedly connected to the mounting cross beam 6.

The both ends of installation crossbeam 6 all are provided with the installation and press from both sides 8, the tail end of installation clamp 8 is provided with the mounting hole. The device is clamped and mounted by means of a mounting clip 8.

The utility model discloses a theory of operation is: when adjusting center backrest mechanism 1 and supplementary backrest mechanism 2, drive center backrest mechanism 1 through rotating threaded rod 3 and do longitudinal position adjustment, supplementary backrest mechanism 2 that lateral wall connecting rod 12 that sets up through center slider 11 both sides drove both sides is longitudinal movement along slide bar 4, all be provided with on the supplementary backrest mechanism 2 of both sides and rotate connecting block 22 and rotation bolt 23, can further carry out the adjustment on supplementary backrest 26 angle, the setting of seat 24 is adjusted to the rethread supplementary backrest, realize the position fine setting of supplementary backrest 26 of both sides alone, so as to reach the best position state, help most crowds' use, and through the perfect laminating neck of a plurality of backrests, reduce the emergence of fatigue and disease.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a seat extends back convenient to adjust, includes central back mechanism (1), its characterized in that, central back mechanism (1) includes central slider (11), be provided with the screw hole on central slider (11), and central slider (11) pass through screw hole threaded connection on threaded rod (3), lateral wall connecting rod (12) are all installed to the both sides of central slider (11), and lateral wall connecting rod (12) that central slider (11) set up through both sides are connected with both sides auxiliary back mechanism (2) cooperation, it is connected with articulated seat (13) to rotate on the face that central slider (11) is close to the outside, the one end fixedly connected with central back (14) of central slider (11) are kept away from to articulated seat (13), auxiliary back mechanism (2) includes auxiliary sliding block (21), auxiliary sliding block (21) are the trapezium structure, and be provided with the inclined through-hole on supplementary slider (21) upper surface, supplementary slider (21) pass through inclined through-hole sliding connection on slide bar (4), be provided with through hole on the side of supplementary slider (21), and the through downthehole through connection of supplementary slider (21) has lateral wall connecting rod (12), fixed mounting has rotation connecting block (22) on the one side face that slide bar (4) were kept away from in supplementary slider (21), it is provided with rotation bolt (23) to run through and rotate on rotation connecting block (22), the supplementary back of one end fixedly connected with of rotation bolt (23) is adjusted seat (24), supplementary back is adjusted seat (24) and is kept away from one side of rotating bolt (23) and install supplementary back (26).

2. The conveniently-adjusted extended backrest for the seat is characterized in that an open slot is formed in a side plate surface of the auxiliary backrest adjusting seat (24) far away from the rotating bolt (23), an adjusting threaded rod (25) penetrates through the open slot, one end of the adjusting threaded rod (25) is rotatably connected to the inner wall of the bottom of the open slot of the auxiliary backrest adjusting seat (24), and one end of the adjusting threaded rod (25) far away from the bottom is connected with a knob.

3. The seat extension backrest convenient to adjust is characterized in that an auxiliary backrest (26) is slidably connected in an opening groove of the auxiliary backrest adjusting seat (24), a fine adjustment slider is arranged on the back surface of the auxiliary backrest (26), the fine adjustment slider is arranged on the adjusting threaded rod (25) in a penetrating mode, and the fine adjustment slider is in threaded connection with the adjusting threaded rod (25).

4. The seat extension backrest convenient to adjust is characterized in that one end of the threaded rod (3) penetrates through the mounting cross beam (6) and is connected with an adjusting handle, one end, far away from the mounting cross beam (6), of the threaded rod (3) is rotatably connected to the bottom bracket (7), the bottom of the threaded rod (3) is sleeved with a connecting mechanism (5), hinge interfaces are arranged on two sides of the connecting mechanism (5), and the connecting mechanism (5) is connected with the sliding rods (4) on two sides through the hinge interfaces on two sides.

5. An adjustable seat extension backrest according to claim 4, wherein the end of the slide rod (4) remote from the link mechanism (5) is fixedly attached to the mounting cross member (6).

6. An adjustable seat extension backrest as claimed in claim 5, wherein the mounting cross member (6) is provided with mounting clips (8) at both ends, and the mounting clips (8) are provided with mounting holes at the rear ends.