CN211092843U

CN211092843U - Self-adaptive seat chassis

Info

Publication number: CN211092843U
Application number: CN201922046612.5U
Authority: CN
Inventors: 何基; 商科伟; 蒋小兵
Original assignee: Hangzhou Qixiong Technology Co ltd
Current assignee: Hangzhou Qixiong Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-28
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to a self-adaptation seat chassis, include unable adjustment base, movable base, the back connecting piece that cup joints in proper order from outer to inner, open the front portion of back connecting piece has the first direction elongated slot that sets up down behind the slant, wear to be equipped with in first direction elongated slot with the anterior articulated front axle of movable base, open the rear portion of movable base has the second direction elongated slot that sets up down before the slant, wear to be equipped with simultaneously in second direction elongated slot with back connecting piece, unable adjustment base articulated rear axle, it has the follower to articulate between unable adjustment base's front portion and the front axle, movable base realizes raising or the state that descends along the swing of back connecting piece. Compared with the prior art, the utility model discloses can come the lift of inclining and facing upward, seat of automatically regulated suitable back according to user's dead weight, accord with ergonomic, the travelling comfort is good, and need not manually operation, accords with modern society's fast rhythm.

Description

Self-adaptive seat chassis

Technical Field

The utility model relates to the technical field of furniture, in particular to self-adaptation seat chassis.

Background

In the current market, the adjustment of the seat backrest and the adjustment of the seat part are realized by manually adjusting the chassis, the operation mode cannot strictly meet the requirements of users on angle adjustment, height adjustment and the like, and the back rubbing feeling of the users can be caused by the fact that the seat part cannot be synchronously adjusted after the backrest is adjusted; therefore, the chassis in the prior art is poor in comfort, easy to fatigue after sitting for a long time, not in line with ergonomics, quite inconvenient in operation mode and low in adjustment efficiency.

In order to solve the technical problem, the utility model provides a self-adaptation seat chassis can come the lift of inclining, seat of automatically regulated suitable back according to user's dead weight, accords with ergonomic, and the travelling comfort is good, and need not manual operation, accords with modern society's fast rhythm.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes exist not enough among the above-mentioned prior art, provide a self-adaptation seat chassis, can come the lift of inclining, seat of automatically regulated suitable back according to user's dead weight, accord with ergonomic, the travelling comfort is good, and need not manually operation, accords with modern society's fast rhythm.

The technical scheme of the utility model is realized like this:

a self-adaptive seat chassis comprises a fixed base, a movable base and a backrest connecting piece which are sequentially sleeved from outside to inside, wherein a first guide long groove is formed in the front portion of the backrest connecting piece in a downward inclined mode, a front shaft hinged to the front portion of the movable base penetrates through the first guide long groove, a second guide long groove is formed in the rear portion of the movable base in a downward inclined mode, a rear shaft hinged to the backrest connecting piece and the fixed base is arranged in the second guide long groove in a penetrating mode, a driven piece is hinged between the front portion of the fixed base and the front shaft, and the movable base is lifted up or lowered down along with the swinging of the backrest connecting piece.

In the utility model, the fixed base is used for connecting the seat supporting component, the movable base is provided with the seat part, the backrest connecting piece is provided with the backrest, when a user sits on the seat and the backrest of the seat is subjected to backward acting force, the backrest connecting piece can be subjected to downward acting force, at the moment, the backrest connecting piece can rotate around the rear shaft, so that the front part of the backrest connecting piece is lifted up by the first guide long groove, the front shaft and the first guide long groove slide relatively, the driven piece and the front part of the movable base are driven to lift up and back, meanwhile, the second guide long groove slides along the rear shaft, the rear part of the movable base is driven to lift up and back, namely, when the backrest connecting piece is subjected to downward acting force, the whole movable base can lift up and back, the self-adapting adjustment of the backrest and the seat part lifting is realized, the human engineering is met, the back rubbing is not easy, and the, manual operation is not needed; the first guide long groove and the second guide long groove are used for realizing self-adaptive adjustment of the backrest connecting piece and the movable base and limiting the adjustment range of the backrest connecting piece and the movable base, when the backrest connecting piece is in an initial state (the backrest connecting piece is not stressed), the front shaft is in contact with the inner upper end of the first guide long groove, the rear shaft is in contact with the inner upper end of the second guide long groove, when the backrest connecting piece can be subjected to a sufficient downward acting force, the front shaft is in contact with the inner lower end of the first guide long groove, the rear shaft is in contact with the inner lower end of the second guide long groove, and the maximum adjustment range is obtained at the.

Preferably, an elastic reset device for assisting the reset of the backrest connecting piece is included.

When the backrest connecting piece is not subjected to downward acting force any more, the backrest connecting piece is reset, and the movable base is reset simultaneously.

Preferably, the elastic reset device is a torsion spring, the torsion spring is sleeved on the rear shaft, one end of the torsion spring abuts against the backrest connecting piece, and the other end of the torsion spring abuts against the fixed base.

The torsion spring is convenient for the backrest connecting piece and the movable base to return to the initial state, simultaneously enhances the stability of the backrest connecting piece and the movable base during adjustment, avoids the conditions of high speed and the like, and is safer and more comfortable.

Preferably, the front part of the backrest connecting piece is provided with a fixed cross rod, and one end of the torsion spring is abutted against the backrest connecting piece by abutting against the fixed cross rod.

Preferably, the rear shaft is sleeved with a plastic sleeve, and the torsion spring is sleeved on the plastic sleeve.

The degree of matching of the rear shaft and the torsion spring is enhanced, the abrasion is small, and the operation is smoother.

Preferably, the two ends of the front shaft are sleeved with first shaft sleeves used for being in contact with the first guide long grooves, and the two ends of the rear shaft are sleeved with second shaft sleeves used for being in contact with the second guide long grooves.

The friction force during the contact is reduced, and the contact is smoother.

Preferably, the first shaft sleeve and the second shaft sleeve are plastic shaft sleeves.

The friction force during the contact is reduced, and the contact is smoother.

Preferably, the first guide long groove and the second guide long groove are waist-shaped grooves.

Preferably, the fixed base is provided with a connecting port for connecting with a seat air rod.

Adopted above-mentioned technical scheme the beneficial effects of the utility model are that:

the utility model provides a self-adaptation seat chassis can come the lift of inclining and facing upward, seat of automatically regulated suitable back according to user's dead weight, accords with ergonomic, and the travelling comfort is good, and need not manually operation, accords with modern society's fast rhythm. The utility model discloses in, when the user takes on the seat and backrest receives backward effort, the backrest connecting piece can receive a decurrent effort, and the backrest connecting piece can rotate round the rear axle this moment, makes it open the anterior lifting that has first direction elongated slot, and the front axle slides with first direction elongated slot relatively, and drive the follower, the anterior backward lifting that makes progress of activity base, and meanwhile, second direction elongated slot slides along the rear axle, drives the ascending backward lifting of activity base rear portion, when the backrest connecting piece can receive a decurrent effort promptly, the whole lifting that makes progress of activity base has realized backrest hypsokinesis and the self-adaptation regulation of seat portion lifting, accords with ergonomic, difficult back rubbing, and the travelling comfort is good, need not manually operation.

Drawings

FIG. 1 is a schematic diagram of the overall explosive structure of the chassis of the embodiment;

FIG. 2 is a schematic view of the original state of the chassis (with no force applied to the backrest connection) according to the embodiment;

FIG. 3 is another schematic view of the original state of the chassis (with no force applied to the backrest connectors) according to the embodiment;

FIG. 4 is a schematic view of the middle state of the chassis (the backrest connector is subjected to a certain force, i.e. a middle amplitude) according to the embodiment;

FIG. 5 is another schematic view of the embodiment in a neutral state (the backrest connector is subjected to a certain force, i.e., a neutral amplitude);

FIG. 6 is a schematic structural diagram of the maximum variation state (maximum amplitude) of the chassis according to the embodiment;

FIG. 7 is another schematic view of the maximum variation state (maximum amplitude) of the chassis according to the embodiment;

reference numerals:

the backrest comprises a movable base 100, a second guide long groove 110, a backrest connecting piece 200, a first guide long groove 210, a fixed cross bar 220, a front shaft 300, a first shaft sleeve 310, a fixed base 400, a connecting port 410, a fixed plate 420, a resisting plate 430, an upper end face 431, an avoiding groove 440, a rear shaft 500, a second shaft sleeve 510, a plastic sleeve 520, a driven piece 600 and a torsion spring 700.

Detailed Description

The specific implementation manner of the utility model is as follows:

example (b):

a self-adaptive seat chassis is shown in figures 1-7 and comprises a fixed base 400, a movable base 100 and a backrest connecting piece 200 which are sequentially sleeved from outside to inside, wherein the movable base 100 is used for configuring a seat plate, the backrest connecting piece 200 is used for configuring a backrest, and a connecting port 410 used for being connected with a seat air rod is formed in the fixed base 400.

Specifically, a first guide long groove 210 (specifically, a waist-shaped groove) which is obliquely arranged backwards and downwards is formed in the front portion of the backrest connecting piece 200, a front shaft 300 which is hinged with the front portion of the movable base 100 penetrates through the first guide long groove 210, a second guide long groove 110 (specifically, a waist-shaped groove) which is obliquely arranged forwards and downwards is formed in the rear portion of the movable base 100, a rear shaft 500 which is hinged with the backrest connecting piece 200 and the fixed base 400 at the same time penetrates through the second guide long groove 110, a driven piece 600 is hinged between the front portion of the fixed base 400 and the front shaft 300, and the movable base 100 is lifted or lowered along with the swinging of the backrest connecting piece 200; in order to further enhance the stability of the rear axle 500, a fixing plate 420 is connected to the fixing base 400, and the middle position of the rear axle 500 is hinged to the fixing plate 420.

Further, a plastic sleeve 520 and a torsion spring 700 for assisting the return of the backrest connector 200 are sequentially sleeved on the periphery of the rear shaft 500 from inside to outside, wherein one end of the torsion spring 700 abuts against the backrest connector 200, and the other end of the torsion spring 700 abuts against the fixed base 400 (specifically, a resisting plate 430 is arranged at the rear part of the fixed base 400, an upper end face 431 of the resisting plate 430 is an inclined surface, avoiding grooves 440 for avoiding the rotation of the backrest connector 200 are formed in the two sides of the resisting plate 430 and the fixed base 400, the plane of the resisting plate 430 is perpendicular to the plane of the fixed plate 420, and the other end of the torsion spring 700 is attached to and abuts against the inclined upper end face 431 of the resisting plate 430); specifically, the front portion of the backrest connector 200 is provided with a fixed cross bar 220, and one end of the torsion spring 700 presses against the backrest connector 200 by pressing against the fixed cross bar 220; the front shaft 300 has a first sleeve 310 at both ends thereof for contacting the first guide slot 210, and the rear shaft 500 has a second sleeve 510 at both ends thereof for contacting the second guide slot 110, wherein the first sleeve 310 and the second sleeve 510 are plastic sleeves.

When a user sits on the seat and the seat back receives a backward acting force, the backrest connecting piece 200 receives a downward acting force, at the moment, the backrest connecting piece 200 rotates around the rear shaft 500, so that the front part of the first guide long groove 210 is lifted, the front shaft 300 slides relative to the first guide long groove 210 and drives the driven piece 600 and the front part of the movable base 100 to lift upwards and backwards, meanwhile, the second guide long groove 110 slides along the rear shaft 500 to drive the rear part of the movable base 100 to lift upwards and backwards, namely, when the backrest connecting piece 200 receives a downward acting force, the whole movable base 100 can lift upwards and backwards, and the self-adaptive adjustment of the backward tilting of the seat back and the lifting of the seat back is realized.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a self-adaptation seat chassis, includes unable adjustment base, activity base, the back connecting piece that cup joints in proper order from outer to inner, its characterized in that: the front part of the backrest connecting piece is provided with a first guide long groove which is obliquely arranged backwards and downwards, a front shaft which is hinged with the front part of the movable base is arranged in the first guide long groove in a penetrating manner, the rear part of the movable base is provided with a second guide long groove which is obliquely arranged forwards and downwards, a rear shaft which is simultaneously hinged with the backrest connecting piece and the fixed base is arranged in the second guide long groove in a penetrating manner, a driven piece is hinged between the front part of the fixed base and the front shaft, and the movable base realizes the lifting or descending state along with the swinging of the backrest connecting piece.

2. An adaptive seat pan according to claim 1, wherein: comprises an elastic reset device for assisting the reset of the backrest connecting piece.

3. An adaptive seat pan according to claim 2, wherein: the elastic reset device is a torsion spring which is sleeved on the rear shaft, wherein one end of the torsion spring is abutted against the backrest connecting piece, and the other end of the torsion spring is abutted against the fixed base.

4. An adaptive seat pan according to claim 3, wherein: the front part of the backrest connecting piece is provided with a fixed cross rod, and one end of the torsional spring is abutted against the backrest connecting piece by abutting against the fixed cross rod.

5. An adaptive seat pan according to claim 3, wherein: the rear shaft is sleeved with a plastic sleeve, and the torsion spring is sleeved on the plastic sleeve.

6. An adaptive seat pan according to claim 1, wherein: and two ends of the front shaft are sleeved with first shaft sleeves used for being in contact with the first guide long grooves, and two ends of the rear shaft are sleeved with second shaft sleeves used for being in contact with the second guide long grooves.

7. An adaptive seat pan according to claim 6, wherein: the first shaft sleeve and the second shaft sleeve are plastic shaft sleeves.

8. An adaptive seat pan according to claim 1, wherein: the first guide long groove and the second guide long groove are waist-shaped grooves.

9. An adaptive seat pan according to claim 1, wherein: the fixed base is provided with a connector used for being connected with the seat air rod.