CN216454189U

CN216454189U - Waist rest movable adjusting structure applied to office chair

Info

Publication number: CN216454189U
Application number: CN202123197800.1U
Authority: CN
Inventors: 谭建忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-05-10
Anticipated expiration: 2031-12-17

Abstract

A waist rest movable adjusting structure applied to an office chair comprises a backrest frame and a waist rest body positioned on the front side of the backrest frame, wherein a movable seat is rotatably connected to the backrest frame, an adjusting seat is arranged on the movable seat, one end of the adjusting seat is vertically slidably mounted on the movable seat, and the other end of the adjusting seat is rotatably connected with the back surface of the waist rest body; a waist support locking structure used for fixing the position of the waist support body after the waist support body is adjusted is arranged between the movable seat and the adjusting seat. The utility model discloses be provided with the sliding seat on the back frame, adjust the seat and the waist leans on locking structure, makes the waist lean on the body can carry out the regulation of height and angle, and convenient to use person leans on the position according to actual demand adjustment waist, lets user's waist obtain good support to satisfy different users ' demand, reach the purpose that improves user's use experience effect.

Description

Waist rest movable adjusting structure applied to office chair

Technical Field

The utility model relates to an office chair technical field, concretely relates to be applied to waist on office chair and lean on activity regulation structure.

Background

The office chair is a seat with a backrest and armrests, the backrest on the seat is generally vertical or inclined, when a user leans the back against the backrest, a certain gap exists between the waist of the user and the backrest, the human back cannot completely lean against the backrest, and the support effect of the backrest on the human back is reduced, so that the use comfort of the human body is reduced. In order to improve the riding comfort, a convex cushion part, i.e. a lumbar part, is generally arranged at the position of the chair back close to the waist of the seat occupant, and the cushion part supports the waist of the seat occupant to reduce the fatigue of the waist.

In the prior art, the position of the waist rest part of the office chair can not be adjusted generally, and when different users take the office chair, the waist rest cushion part can not correctly support the waist of the users, so that the problems of taking discomfort, poor applicability and the like exist, and therefore, the purpose of adjusting the position of the waist rest movable adjusting structure at present is urgently needed to meet the requirements of different users.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a waist rest movable adjusting structure applied to an office chair.

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

the utility model provides a be applied to waist on office chair and lean on activity regulation structure, includes the back frame, is located the waist of back frame front side and leans on the body, its characterized in that: the backrest frame is rotatably connected with a movable seat, the movable seat is provided with an adjusting seat, one end of the adjusting seat is vertically slidably arranged on the movable seat, and the other end of the adjusting seat is rotatably connected with the back surface of the waist rest body; a waist support locking structure used for fixing the position of the waist support body after the waist support body is adjusted is arranged between the movable seat and the adjusting seat.

The utility model discloses in, be equipped with the sliding guide groove on the sliding seat, be equipped with sliding guide on the regulation seat, sliding guide sliding fit is in the sliding guide groove.

The utility model discloses in, the waist leans on locking structure to lean on locking groove, the waist on locating the sliding seat including locating the waist on adjusting the seat leans on locking device, the waist leans on locking inslot to be equipped with a plurality of gear locked grooves of arranging extremely down from last in proper order, the waist leans on locking device including can be for the rotatory activity latch fitting of sliding seat, drive activity latch fitting and gear locked groove complex elastic component.

In the utility model, the movable seat is provided with an installation groove, the movable locking piece is rotatably connected in the installation groove, the front end of the movable locking piece is positioned in the installation groove, and the rear end of the movable locking piece extends into the waist-rest locking groove and is matched with the gear locking groove; the elastic piece is located the mounting groove, the one end of elastic piece and the cell wall cooperation of mounting groove are connected, and the other end cooperation is connected on movable latch fitting.

The utility model discloses in, the waist leans on locking structure still breaks away from with the switching back shelves structure of detaining to highest gear locked groove from lowest gear locked groove including control activity latch fitting.

The utility model discloses in, return the shelves structure including order about the activity latch fitting break away from moving back a grade recess of minimum gear locked groove, order about the activity latch fitting and keep moving back a grade keeping structure, order about the activity latch fitting from moving back a grade state and switch over to advancing the shelves drive face of advancing the shelves state, order about the activity latch fitting from moving back the shelves state and switch over to advancing the shelves state after, the activity latch fitting cooperates with highest gear locked groove under the effect of elastic component.

The utility model discloses in, move back shelves retaining structure including establishing lockhole, the locking piece of setting in mounting groove on the activity latch fitting, the locking piece activity is detained and is formed the buckle cooperation in going into the lockhole.

The utility model discloses in, move back the shelves recess and locate the waist and lean on the lower extreme of locking groove, it has the shelves driving surface that moves back that is arranged in promoting movable latch fitting swing so that the lockhole is detained to the locking piece to move back the shelves recess, the activity latch fitting with move back shelves driving surface movable contact cooperation.

The utility model discloses in, advance the shelves drive face and locate the waist and lean on the upper end of locking groove, activity latch fitting and advance shelves drive face movable contact cooperation.

The utility model discloses in, the back of sliding seat is equipped with and holds the recess, it installs the installation base to hold the embedding in the recess, the installation recess is seted up on the back of installation base.

The utility model has the advantages that: the utility model discloses be provided with the sliding seat on the back frame, adjust the seat and the waist leans on locking structure, makes the waist lean on the body can carry out the regulation of height and angle, and convenient to use person leans on the position according to actual demand adjustment waist, lets user's waist obtain good support to satisfy different users ' demand, reach the purpose that improves user's use experience effect.

Drawings

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

FIG. 1 is a first perspective view of the present embodiment;

FIG. 2 is a second perspective view of the present embodiment;

FIG. 3 is a sectional view of the present embodiment;

FIG. 4 is a schematic view of the movable seat and the adjusting seat;

FIG. 5 is an exploded view of the movable seat, the adjustment seat and the lumbar support locking structure;

fig. 6 is a schematic diagram of a change from the reverse state to the forward state of the movable lock.

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. 1-6, a waist rest movable adjusting structure applied to an office chair comprises a backrest frame 1, a waist rest body 2 positioned at the front side of the backrest frame 1, and a backrest body 10, wherein the upper part of the backrest frame 1 is rotatably connected with the upper part of the backrest body 10, specifically: the backrest frame 1 is provided with a backrest rotating shaft, the back surface of the upper part of the backrest body 10 is provided with a backrest rotating seat 101, the backrest rotating seat 101 is provided with a backrest rotating groove, and the backrest rotating shaft is rotatably installed in the backrest rotating groove to realize the rotary connection between the backrest frame 1 and the backrest body 10; further, be equipped with between the upper portion of lumbar support body 2 and the bottom of back body 10 and connect shell fragment 20 and connect, specifically be: the connecting elastic sheet 20 is a metal elastic sheet, a first slot is formed in the bottom of the backrest body 10, a second slot is formed in the upper portion of the waist support body 2, two ends of the connecting elastic sheet 20 are inserted into the first slot and the second slot respectively, and matching connection between the waist support body 2 and the backrest body 10 is completed, so that when the position of the waist support body 2 is adjusted, the position of the backrest body 10 is adjusted in a linkage mode, and using requirements of different users are better met.

The last rotation of back frame 1 is connected with sliding seat 3, be equipped with on the sliding seat 3 and adjust seat 4, the one end of adjusting seat 4 is installed on sliding seat 3 with sliding from top to bottom, specifically is: be equipped with sliding guide slot 31 on the sliding seat 3, be equipped with sliding guide 41 on adjusting seat 4, sliding

guide

41 and 4 integrated into one piece of adjusting the seat, structural stability is high, sliding guide 41 sliding fit is in sliding guide slot 31 to it can be for along sliding guide slot 31 the direction of adjusting seat 4 the sliding seat 3 slides from top to bottom. The other end of adjusting seat 4 is connected with the back rotation that the body 2 was leaned on to the waist, so when adjusting seat 4 for during sliding from top to bottom of sliding seat 3, can drive the waist and lean on body 2 to carry out position control, specifically be: the back of the waist rest body 2 is provided with a connecting part 21, a rotatable second connecting shaft is arranged in a rotary connecting hole 42 at the other end of the adjusting seat 4, and the second connecting shaft is connected with the connecting part 21. A waist support locking structure used for fixing the position of the waist support body 2 after the waist support body 2 is adjusted is arranged between the movable seat 3 and the adjusting seat 4, so that the waist support body 2 keeps the adjusted position and supports the waist of a user.

In a preferred embodiment, in order to avoid the movable seat 3, the adjusting seat 4 and the waist rest locking structure from occupying too much space of the office chair, an adjusting movable space 11 is provided at the middle position of the backrest frame 1, and the movable seat 3 and the adjusting seat 4 are both located in the adjusting movable space 11. In this embodiment, the left and right ends of the movable seat 3 are both provided with a first connecting shaft 32, the first connecting shaft 32 and the movable seat 3 are integrally formed, the structural stability is high, and the movable seat 3 is rotatably connected in the adjustment movable space 11 of the backrest frame 1 through the first connecting shaft 32; the backrest frame 1 is provided with a connecting base, the connecting base is provided with a connecting clamping seat 12, and a rotary mounting hole for rotatably mounting a first connecting shaft 32 is formed between the connecting base and the connecting clamping seat 12.

As preferred embodiment, the waist leans on locking structure to lean on locking groove 6, locate the waist on sliding seat 3 including locating the waist on adjusting seat 4 and lean on locking device, the waist leans on locking inslot 6 to be equipped with a plurality of gear locked groove 61 of arranging down in proper order from last, the waist leans on locking device to include can be for 3 rotatory movable latch pieces 7 of sliding seat, drive movable latch pieces 7 and gear locked groove 61 complex elastic component 8. In this embodiment, the movable locking piece 7 is provided with a position locking tooth 71 for being clamped into the gear position locking groove 61, the movable seat 3 is provided with an installation groove 30, the movable locking piece 7 is rotatably connected in the installation groove 30 through a locking rotating shaft 70, the front end of the movable locking piece 7 is located in the installation groove 30, and the rear end of the movable locking piece 7 extends into the lumbar support locking groove 6, so that the position locking tooth 71 can be matched with the gear position locking groove 61 to lock the position; the elastic piece 8 is a spring, the elastic piece 8 is positioned in the mounting groove 30, one end of the elastic piece 8 is connected with the groove wall of the mounting groove 30 in a matched mode, and the other end of the elastic piece 8 is connected to the movable locking piece 7 in a matched mode.

As a preferred embodiment, the lumbar support locking structure further includes a shift-back structure for controlling the movable locking piece 7 to disengage from the lowest gear locking groove 61 to switch and buckle into the highest gear locking groove 61, the shift-back structure includes a shift-back recess 62 for driving the movable locking piece 7 to disengage from the lowest gear locking groove 61, a shift-back retaining structure for driving the movable locking piece 7 to maintain the shift-back state, and a shift-in driving surface 63 for driving the movable locking piece 7 to switch from the shift-back state to the shift-in state, and after driving the movable locking piece 7 to switch from the shift-back state to the shift-in state, the movable locking piece 7 is engaged with the highest gear locking groove 61 under the action of the elastic piece 8.

In this embodiment, the backstop holding structure comprises a lock hole 40 formed on the movable lock 7, and a lock block 50 arranged in the mounting groove 30, wherein the lock block 50 is movably buckled into the lock hole 40 to form a snap fit. Move back shelves recess 62 and locate the lower extreme that the waist leaned on locking groove 6, move back shelves recess 62 and have and be used for promoting the swing of movable latch fitting 7 so that the locking piece 50 detains the drive face 64 that moves back in the lockhole 40, movable latch fitting 7 with move back shelves drive face 64 movable contact cooperation. The drive surface 63 is disposed at the upper end of the lumbar support locking groove 6, and the movable locking member 7 is in movable contact with the drive surface 63 to push the movable locking member 7 to swing to disengage the locking piece 50 from the locking hole 40. In this embodiment, for the convenience of the shift, the shift driving surface 63 is a concave arc surface, and the movable locking element 7 is provided with a sliding protrusion 72 sliding on the shift driving surface 63.

In this embodiment, in order to facilitate the installation of the lumbar support locking device, the back surface of the movable seat 3 is provided with the accommodating groove 33, the installation base 60 is embedded in the accommodating groove 33, the installation groove 30 is provided on the back surface of the installation base 60, so that the movable locking piece 7 and the elastic piece 8 can be installed on the installation base 60 in advance, and then the installation base 60 is installed in the accommodating groove 33, thereby completing the installation of the whole lumbar support locking device.

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 be applied to waist on office chair and lean on activity regulation structure, includes back frame (1), is located the waist of back frame (1) front side and leans on body (2), its characterized in that: the backrest frame (1) is rotatably connected with a movable seat (3), the movable seat (3) is provided with an adjusting seat (4), one end of the adjusting seat (4) can be vertically slidably arranged on the movable seat (3), and the other end of the adjusting seat is rotatably connected with the back surface of the waist rest body (2); a waist support locking structure used for fixing the position of the waist support body (2) after the waist support body (2) is adjusted is arranged between the movable seat (3) and the adjusting seat (4).

2. A lumbar support movement adjustment structure applied to an office chair as claimed in claim 1, wherein: be equipped with sliding guide groove (31) on sliding seat (3), be equipped with sliding guide (41) on adjusting seat (4), sliding guide (41) sliding fit is in sliding guide groove (31).

3. A lumbar support movement adjustment structure applied to an office chair as claimed in claim 1, wherein: waist leans on the locking structure including locating waist on adjusting on seat (4) and lean on locking groove (6), locate the waist on sliding seat (3) and lean on locking device, the waist leans on and is equipped with a plurality of gear locked groove (61) of arranging extremely down from last in locking groove (6), the waist leans on locking device including can be for sliding seat (3) rotatory activity latch fitting (7), drive activity latch fitting (7) and gear locked groove (61) complex elastic component (8).

4. A lumbar support movement adjustment structure applied to an office chair according to claim 3, characterized in that: the movable seat (3) is provided with an installation groove (30), the movable locking piece (7) is rotatably connected in the installation groove (30), the front end of the movable locking piece (7) is positioned in the installation groove (30), and the rear end of the movable locking piece extends into the waist rest locking groove (6) to be matched with the gear locking groove (61); the elastic piece (8) is positioned in the mounting groove (30), one end of the elastic piece (8) is connected with the groove wall of the mounting groove (30) in a matched mode, and the other end of the elastic piece is connected to the movable locking piece (7) in a matched mode.

5. A lumbar support movement adjustment structure applied to an office chair according to claim 3, characterized in that: the waist rest locking structure also comprises a gear returning structure which controls the movable locking piece (7) to be separated from the lowest gear locking groove (61) so as to be switched and buckled into the highest gear locking groove (61).

6. A lumbar support movement adjustment structure applied to an office chair according to claim 5, wherein: the structure of shifting back includes that it breaks away from moving back recess (62) of minimum gear keyway (61) to order about movable latch fitting (7), order about movable latch fitting (7) and keep moving back the shelves retaining structure of the state of shifting back, order about movable latch fitting (7) to switch over into advancing the shelves drive face (63) of the state of shifting from moving back the shelves state, order about movable latch fitting (7) to switch over into advancing the shelves state back from moving back the shelves state, movable latch fitting (7) cooperate with highest gear keyway (61) under the effect of elastic component (8).

7. A lumbar support movement adjustment structure applied to an office chair as claimed in claim 6, wherein: the gear-withdrawing retaining structure comprises a lock hole (40) formed in the movable lock piece (7) and a lock block (50) arranged in the mounting groove (30), and the lock block (50) is movably buckled into the lock hole (40) to form a snap fit.

8. A lumbar support movement adjustment structure applied to an office chair according to claim 7, wherein: move back shelves recess (62) and locate the waist and lean on the lower extreme of locking groove (6), move back shelves recess (62) have and be used for promoting movable latch fitting (7) swing so that make locking piece (50) detain move back shelves actuating surface (64) in lockhole (40), movable latch fitting (7) with move back shelves actuating surface (64) movable contact cooperation.

9. A lumbar support movement adjustment structure applied to an office chair according to claim 7, wherein: the upper end of the waist-leaning locking groove (6) is arranged on the gear-shifting driving surface (63), and the movable locking piece (7) is in movable contact and matching with the gear-shifting driving surface (63).

10. A lumbar support movement adjustment structure applied to an office chair according to claim 4, characterized in that: the back of sliding seat (3) is equipped with and holds recess (33), it installs installation base (60) to hold embedded in recess (33), installation groove (30) are seted up on the back of installation base (60).