CN213940230U

CN213940230U - Backrest and seat capable of being freely adjusted

Info

Publication number: CN213940230U
Application number: CN202022520349.1U
Authority: CN
Inventors: 刘财强; 何铁龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-08-13
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a backrest, include: fork frame, first sliding sleeve, back body and hinge. The fork comprises a main handle part and a fork part; the first sliding sleeve is fixedly connected with the main handle part. The backrest body comprises a waist pillow part and a back pillow part, and a breast board is arranged at the rear part of the waist pillow part; the fork branch part is rotationally connected with the breast board through a hinge shaft. Also disclosed is a freely adjustable seat comprising: base, stand, back, spreader and bedplate. A row of pin holes are arranged on the upright post; first sliding sleeve and stand clearance fit, first sliding sleeve and stand are fixed a position through the pin. A second sliding sleeve is arranged at the rear end of the transverse column, the second sliding sleeve is in clearance fit with the upright column, and the second sliding sleeve and the upright column are positioned through a pin; the seat board is arranged at the front end of the transverse column. The backrest can be adjusted in height and rotated to provide multi-angle support for a user. The seat can also adjust the height of the seat board when in use.

Description

Backrest and seat capable of being freely adjusted

Technical Field

The utility model belongs to the technical field of the seat, specifically a but seat of free regulation.

Background

An office chair is a backrest chair on which a person sits when working on a desktop in a sitting posture, and the general office work usually comprises casters, an air rod, a chassis, a chair seat and a backrest, wherein the air rod is called as a telescopic rod and is used for adjusting the height and the rotation of the chair. The bottom plate supports the seat part, and the lower part of the bottom plate is connected with the air rod. The chair seat is composed of wood boards, sponge and fabric. When the user uses the chair, the center of gravity should be as far as possible in the middle of the air pressure rod, the air pressure rod is guaranteed to be convenient and flexible to lift and rotate, and because the height of the backrest is fixed, when the user with insufficient height sits on the chair, if the user wants to lean against the backrest, the waist is not supported, and the waist is aching after a long time of sitting.

Disclosure of Invention

The utility model aims at the defects of the prior art and provides a seat which can adjust the height and the angle of a backrest.

For solving the above technical problem, the utility model discloses a technical scheme is:

a backrest, comprising: fork frame, first sliding sleeve, back body and hinge.

The fork frame comprises a main handle part and two fork parts extending towards two sides respectively; the first sliding sleeve is fixedly connected with the main handle part.

The backrest body comprises a waist pillow part and a back pillow part, the back pillow part is positioned above the waist pillow part, the waist pillow part arches forwards, and a breast board is arranged at the rear part of the back pillow part; the crotch is connected with the breast board.

Further, the device also comprises two hinge shafts; the fork branch part is rotationally connected with the breast board through the hinge shaft; one side of the hinge shaft is fixedly connected with the breast board, and the other side of the hinge shaft is detachably connected with the forked part through a clamping groove.

A freely adjustable seat, comprising: base, stand, back, spreader and bedplate.

The base serves as a base for supporting and moving the seat; the upright column is arranged along the vertical direction, the lower end of the upright column is fixedly connected with the base, and at least one row of pin holes from top to bottom are formed in the upright column; the first sliding sleeve is in clearance fit with the upright post, and the first sliding sleeve is positioned through the upright post through a pin.

The transverse column is arranged along the horizontal direction, the rear end of the transverse column is provided with a second sliding sleeve, the second sliding sleeve is in clearance fit with the upright column, and the second sliding sleeve and the upright column are positioned through a pin; the seat plate is arranged at the front end of the transverse column.

The seat further comprises an adjusting mechanism, the adjusting mechanism comprises a sliding plate, a lock tongue and a wrench, the seat plate is connected with the cross column through the sliding plate and moves back and forth through the sliding plate, and the wrench drives the lock tongue to position the sliding plate. The handle is moved to separate the lock tongue, the seat board can move back and forth through the sliding plate, and the distance between the seat board and the backrest is adjusted.

The sliding plate comprises a guide rail and a supporting plate, the guide rail is fixedly connected with the transverse column, and the supporting plate is fixedly connected with the seat plate; a clamping groove is formed in the inner side of the supporting plate and can be matched with the lock tongue; spanner one end is equipped with the handle, and the other end inserts inside the guide rail, the spring bolt with the spanner passes through the driving medium and is connected.

The transmission part is a gear rack mechanism. And a spring is arranged at the lower end of the lock tongue.

Two rows of pin holes are arranged.

The cross section of the upright post is oval or rectangular with round corners. The upright post is eccentrically connected with the base, and the distance from the upright post to the front end of the base is greater than the distance from the upright post to the rear end of the base.

The utility model has the advantages that: the height of the backrest can be adjusted when the backrest is used, and meanwhile, the backrest body can rotate to provide multi-angle support for a user. When the seat is used, the backrest body can be adjusted up and down along the upright post by taking out the pin, namely, the first sliding sleeve; through reciprocating the second sliding sleeve along the stand, adjust the height of bedplate. Is beneficial to protecting the waist of the user and is suitable for people with different body types to ride.

Drawings

FIG. 1 is a top view of a backrest;

FIG. 2 is a schematic view of the seat construction;

fig. 3 is a schematic structural view of the adjustment mechanism.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

As shown in fig. 1 and 2, a backrest includes: fork 61, first runner 62, back body 6 and hinge 63.

The fork 61 comprises a main shank 611 and two branches 612 extending to two sides; the first sliding sleeve 62 is fixedly connected with the main handle 611.

The backrest body 6 comprises a lumbar pillow part 601 and a back pillow part 602, the back pillow part 602 is positioned above the lumbar pillow part 601, the lumbar pillow part 601 arches forwards, and a breast board 603 is arranged at the rear part of the back pillow part; the fork 612 is rotatably connected to the fence 603 via the hinge 63.

The fork 612 is rotatably connected with the fence 603 through the hinge 63; one side of the hinge shaft 63 is fixedly connected with the breast board 603, and the other side is detachably connected with the crotch part 612 through a clamping groove.

As shown in fig. 2 and 3, a freely adjustable seat includes: base 1, stand 2, back, spreader 3 and bedplate 4.

The base 1 is used as a base for supporting and moving the seat; the upright post 2 is arranged along the vertical direction, the lower end of the upright post is fixedly connected with the base 1, and at least one row of pin holes 21 from top to bottom are arranged on the upright post 2; the first sliding sleeve 62 is in clearance fit with the upright post 2, and the first sliding sleeve 62 is positioned with the upright post 2 through a pin 7.

The transverse column 3 is arranged along the horizontal direction, the rear end of the transverse column is provided with a second sliding sleeve 31, the second sliding sleeve 31 is in clearance fit with the upright column 2, and the second sliding sleeve 31 and the upright column 2 are positioned through a pin 7; the seat plate 4 is provided at the front end of the cross column 3.

The seat further comprises an adjusting mechanism 5, the adjusting mechanism 5 comprises a sliding plate 51, a bolt 52 and a wrench 53, the seat plate 4 is connected with the cross column 3 through the sliding plate 51 and moves back and forth through the sliding plate 51, and the wrench 53 drives the bolt 52 to position the sliding plate 51. The handle is moved to separate the bolt 52, the seat plate 4 can move back and forth through the sliding plate 51, and the distance between the seat plate 4 and the backrest is adjusted.

The sliding plate 51 comprises a guide rail 511 and a support plate 512, the guide rail 511 is fixedly connected with the cross column 3, and the support plate 512 is fixedly connected with the seat plate 4; a clamping groove is formed in the inner side of the supporting plate 512 and can be matched with the bolt 52; one end of the wrench 53 is provided with a handle, the other end of the wrench 53 is inserted into the guide rail 511, and the bolt 52 is connected with the wrench 53 through a transmission piece 55.

The transmission member 55 is a rack and pinion mechanism. The lower end of the bolt 52 is provided with a spring 54.

The pin holes 21 are provided in two rows.

The cross section of the upright post 2 is oval or rectangular with round corners. The upright column 2 is eccentrically connected with the base 1, and the distance from the upright column 2 to the front end of the base 1 is greater than the distance from the upright column 2 to the rear end of the base 1.

The height of the backrest can be adjusted when the backrest is used, and meanwhile, the backrest body 6 can rotate to support a user at multiple angles. When the seat is used, the backrest body 6 can be adjusted up and down along the upright post 2 by taking out the pin 7 through the first sliding sleeve 62; the height of the seat plate 4 is adjusted by moving the second sliding bush 31 up and down along the upright 2. Is beneficial to protecting the waist of the user and is suitable for people with different body types to ride.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.

Claims

1. A backrest, comprising:

a fork comprising a main handle and two fork parts extending to both sides respectively;

the first sliding sleeve is fixedly connected with the main handle part;

the backrest body comprises a waist pillow part and a back pillow part, the back pillow part is positioned above the waist pillow part, the waist pillow part arches forwards, a breast board is arranged at the rear part of the waist pillow part, and the breast board is connected with the bifurcate part.

2. The backrest of claim 1, wherein: the device also comprises two hinge shafts; the fork branch part is rotationally connected with the breast board through the hinge shaft; one side of the hinge shaft is fixedly connected with the breast board, and the other side of the hinge shaft is detachably connected with the forked part through a clamping groove.

3. A freely adjustable seat, comprising:

a base as a base for the support and movement of the seat;

the upright column is arranged along the vertical direction, the lower end of the upright column is fixedly connected with the base, and at least one row of pin holes from top to bottom are formed in the upright column;

the backrest of claim 1 or 2, wherein the first sliding sleeve is in clearance fit with the upright, and the first sliding sleeve and the upright are positioned by a pin;

the transverse column is arranged along the horizontal direction, the rear end of the transverse column is provided with a second sliding sleeve, the second sliding sleeve is in clearance fit with the upright column, and the second sliding sleeve and the upright column are positioned through a pin; and

a seat plate arranged at the front end of the transverse column.

4. The freely adjustable seat according to claim 3, characterized in that: the seat further comprises an adjusting mechanism, the adjusting mechanism comprises a sliding plate, a lock tongue and a wrench, the seat plate is connected with the cross column through the sliding plate and moves back and forth through the sliding plate, and the wrench drives the lock tongue to position the sliding plate.

5. The freely adjustable seat as set forth in claim 4, wherein: the sliding plate comprises a guide rail and a supporting plate, the guide rail is fixedly connected with the transverse column, and the supporting plate is fixedly connected with the seat plate; a clamping groove is formed in the inner side of the supporting plate and can be matched with the lock tongue; spanner one end is equipped with the handle, and the other end inserts inside the guide rail, the spring bolt with the spanner passes through the driving medium and is connected.

6. The freely adjustable seat as set forth in claim 5, wherein: the transmission part is a gear rack mechanism.

7. The freely adjustable seat as set forth in claim 4, wherein: and a spring is arranged at the lower end of the lock tongue.

8. The freely adjustable seat according to claim 3, characterized in that: two rows of pin holes are arranged.

9. The freely adjustable seat according to claim 3, characterized in that: the cross section of the upright post is oval or rectangular with round corners.

10. The freely adjustable seat according to claim 3, characterized in that: the upright post is eccentrically connected with the base, and the distance from the upright post to the front end of the base is greater than the distance from the upright post to the rear end of the base.