CN212729298U

CN212729298U - Seat waist rest height adjusting device

Info

Publication number: CN212729298U
Application number: CN202021122291.9U
Authority: CN
Inventors: 戴龙飞
Original assignee: Jinmei Health Technology Shanghai Co ltd
Current assignee: Anji Sanjiu Smart Home Technology Co.,Ltd.
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-03-19
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a chair waist rest height adjusting device, which comprises a waist rest and a supporting frame, wherein a connecting seat is arranged between the waist rest and the supporting frame; the front end and the rear end of the connecting seat are respectively connected with the waist rest and the supporting frame, and the rear end of the connecting seat is in sliding fit with the supporting frame; a sliding limiting mechanism is arranged between the two sides of the connecting seat and the supporting frame, and comprises a pair of limiting pins which respectively penetrate out of the two sides of the connecting seat, a plurality of limiting grooves which are symmetrically arranged on the supporting frame in a left-right mode and a control switch for controlling the limiting pins to move transversely; the limiting grooves are longitudinally arranged on the supporting frame at intervals; the control switch is embedded in the connecting seat and is in sliding fit with the connecting seat, and the limiting pin is inserted into or separated from the limiting groove in response to the action of the control switch. The utility model discloses a control switch's slip and control the transverse motion of spacer pin to control convenient and practical is controlled to locking and the unblock state of control spacer pin institute spacing groove.

Description

Seat waist rest height adjusting device

Technical Field

The utility model relates to a thing to sit on field, in particular to high adjusting device is leaned on to seat waist

Background

Sub-health is always a living problem concerned by people, wherein lumbar vertebra problems brought by people due to long-time sitting are particularly frequent, while a chair is used as daily furniture for people to work and study, under the condition of long-time sitting and working, the spine of a human body is naturally bent, particularly the bending at the lumbar vertebra is more important, the lumbar vertebra is easily bent outwards when the chair is in a sitting posture for a long time, and isosceles vertebra diseases of lumbar disc herniation are easily caused after long-time sitting. As is well known, the spine of a human body is S-shaped, and therefore, a waist rest is additionally arranged at the backrest of part of office chairs so as to support the natural bending part of the lumbar vertebra, prevent the lumbar vertebra from bending outwards due to fatigue and ensure the health of the lumbar vertebra of office staff.

However, in practical application, because the body types of people are in diversified distribution of tall, short, fat and thin, the waist support with the fixed position is difficult to adapt to people with different body types, the height of the waist support can not be adjusted up and down to meet individual differences, and the application range and the health care effect of the waist support are limited. The existing chair adjusts the inclination angle of the backrest of the chair through a mechanism on the chair seat, but the waist rest height of the backrest cannot be adjusted, the height and the front and back adjustment cannot be realized at will, and the chair is inconvenient for users; or adjust the waist through frictional force complex mode and lean on the height, but use the waist like this for a long time and lean on can receive reverse effort and lead to the position unsettled, experience effect is also not good.

Disclosure of Invention

The utility model overcomes exist among the above-mentioned prior art not enough, provide a height adjusting device is leaned on to simple and practical, convenient operation's waist, this adjustment mechanism waist is leaned on and is connected through the connecting seat with the support frame, connecting seat rear end and support frame sliding fit be equipped with slip stop gear between back of the body frame and the braced frame for can realize slip and spacing locking between the back of the body frame support frame fast through control switch, can effectively lean on the height to the waist to adjust and the position is leaned on to the quick stable locking waist, the operation is swift laborsaving, can be applicable to the people use of various different sizes, satisfies different individual differences.

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

a chair waist rest height adjusting device comprises a waist rest and a support frame, wherein a connecting seat is arranged between the waist rest and the support frame; the front end and the rear end of the connecting seat are respectively connected with the waist rest and the supporting frame, and the rear end of the connecting seat is in sliding fit with the supporting frame; a sliding limiting mechanism is arranged between the two sides of the connecting seat and the supporting frame, and comprises a pair of limiting pins which respectively penetrate out of the two sides of the connecting seat, a plurality of limiting grooves which are symmetrically arranged on the supporting frame in a left-right mode and a control switch for controlling the limiting pins to move transversely; the movement direction of the control switch is vertical to the movement direction of the limit pin, and the limit grooves are longitudinally arranged on the support frame at intervals; the control switch is embedded in the connecting seat and is in sliding fit with the connecting seat, and the limiting pin is inserted into or separated from the limiting groove in response to the action of the control switch. The utility model discloses a control switch's slip and control the transverse motion of spacer pin to control convenient and practical with the locking and the unblock state of spacing groove.

Preferably, the limit pin is clamped between the connecting seat and the control switch, a spring is arranged between the two limit pins, an isosceles trapezoid groove is formed in the lower portion of the control switch, the isosceles trapezoid groove is provided with two symmetrical oblique edges, a guide post protruding out of the outer wall of the limit pin is arranged on the limit pin, the guide post is located in the trapezoid groove, and the guide post is abutted to the oblique edges. The longitudinal movement of the control switch is converted into the transverse movement of the limiting pin through the matching of the inclined edge of the isosceles trapezoid groove and the guide post, and the spring can ensure that the limiting pin is always abutted against the inclined edge of the isosceles trapezoid groove.

Preferably, a transverse groove is formed in the lower portion of the connecting seat, and the limiting pin is arranged in the transverse groove. The transverse groove is arranged, so that the limiting pin is always in the transverse groove to move and cannot be separated from the connecting seat.

Preferably, the connecting seat comprises supporting plates at the left side and the right side, the control switch is clamped between the supporting plates, a pressing cap protruding out of the connecting seat is upwards arranged on the control switch, a vertical guide groove is formed in the control switch, a guide pillar is arranged at the corresponding position of the connecting seat and inserted into the guide groove, and a limiting screw used for limiting the control switch to be disengaged is connected to the guide pillar. The sliding of the control switch can be controlled by pressing the pressing cap, and the operation is simple and humanized.

Preferably, the support frame comprises a rear cover and a front cover, the front cover is provided with an avoidance window through which the connecting seat penetrates, the connecting seat comprises a sliding part located at the rear and a supporting part exposed out of the avoidance window, and the sliding part is clamped between the front cover and the rear cover.

Preferably, the front cover is provided with two side plates which are symmetrical left and right, and the limiting grooves are arranged at the positions of the side plates close to the avoidance window along the longitudinal direction.

Preferably, a protruding rib protruding forwards is arranged at the position of the side plate close to the avoidance window, and the limiting grooves are arranged on the inner side of the protruding rib along the longitudinal direction. Set up outstanding fin, establish the sliding part of connecting seat and the mutual noninterference influence of cooperation between spacer pin and the spacing groove.

Preferably, the front end of the supporting part is rotatably connected with the waist rest. The waist rest can rotate to fit the waist of a human body, and the use is more comfortable.

Preferably, the front end of the supporting part is provided with an arc-shaped elastic connecting piece, two ends of the elastic connecting piece are provided with protruding shaft heads, the waist rest is provided with rotating supporting parts on two sides, the rotating supporting parts are provided with clamping grooves, and the shaft heads are clamped in the clamping grooves. Connect through the joint mode, reduce the use of screw, the installation is faster.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the mechanism is simple and ingenious, only the control switch and the limiting pin are arranged between the connecting seat and the front cover, and the limiting pin can be controlled to be inserted into or leave the limiting groove through pressing the control switch.

2, the operation is convenient, after the device is installed on the seat, when the height of the waist rest needs to be adjusted, the waist rest can slide up and down only by pressing the pressing cap on the control switch; after the adjustment is finished, the pressing cap is loosened, and the locking pin is reset under the action of the spring and locked with the limiting groove.

3, easily installation, can the different seats of adaptation, during the installation only need with the support frame connect fix on the back of the chair can, through screwed connection, need not specific structure, the installation is quick, the suitability is high.

Drawings

Fig. 1 is a schematic perspective view of the connection between the waist rest and the support frame in the embodiment of the present invention;

fig. 2 is a front exploded view of the waist rest and the support frame in an embodiment of the present invention;

fig. 3 is a back exploded view of the waist rest and the support frame in an embodiment of the present invention;

fig. 4 is a schematic perspective view of a connecting seat according to an embodiment of the present invention;

FIG. 5 is a schematic front connection perspective view of the connection seat and the front cover in the embodiment of the present invention;

FIG. 6 is a schematic view of a back-side connection structure of the connecting seat and the front cover in the embodiment of the present invention;

fig. 7 is a schematic connection perspective view of the locking pin in the locked state according to the embodiment of the present invention;

fig. 8 is a schematic connection perspective view of the locking pin in an unlocked state according to the embodiment of the present invention;

fig. 9 is a schematic connection perspective view of a control switch according to an embodiment of the present invention;

the figures are numbered: a waist support 1; a support frame 2; a connecting seat 3; a rear cover 4; a front cover 5; an avoidance window 6; a sliding section 7; a baffle 7 a; a support portion 8; an elastic connecting member 9; a shaft head 10; a rotation support portion 11; a card slot 12; a slide limit mechanism 13; a stopper pin 14; a limiting groove 15; a control switch 16; pressing the cap 16 a; a transverse slot 17; a support plate 18; a spring 19; a guide groove 20; a guide post 21; a limit screw 22; an isosceles trapezoidal groove 23; a beveled edge 24; a guide post 25; side plates 26; the rib 27.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

as shown in fig. 1-9, the utility model provides a height adjusting device for a waist rest of a chair, which comprises a waist rest 1 and a support frame 2, wherein a connecting seat 3 is arranged between the waist rest 1 and the support frame 2.

As shown in fig. 1-6, the front and rear ends of the connecting seat 3 are respectively connected with the lumbar support 1 and the supporting frame 2, and the connecting seat 3 and the supporting frame 2 are in sliding fit, specifically: the support frame 2 comprises a rear cover 4 and a U-shaped front cover 5, the front cover 5 is provided with an avoidance window 6 for the connecting seat 3 to penetrate out, the avoidance window 6 is longitudinally arranged from top to bottom, the connecting seat 3 comprises a sliding part 7 positioned at the rear and a supporting part 8 exposed out of the avoidance window 6, the left side and the right side of the sliding part 7 extend outwards to form a baffle 7a, the sliding part 7 is clamped between the front cover 5 and the rear cover 4, the baffle 7a is abutted against the front cover 5, and the connecting seat 3 slides up and down relative to the front cover 4 and the rear cover 5 through the sliding part 7; 3 front ends of connecting seat then lean on 1 with the waist and rotate and be connected, specific theory: an arc-shaped elastic connecting piece 9 is arranged at the front end of the supporting part 8, the left end and the right end of the elastic connecting piece 9 are respectively provided with a shaft head 10 protruding outwards, two sides of the waist rest 1 are correspondingly provided with a rotary supporting part 11 protruding backwards, and the rotary supporting part 11 is provided with a clamping groove 12; when the elastic connecting piece 9 is installed, the shaft head 10 is clamped into the clamping groove 12 by pressing the elastic connecting piece 9 inwards.

As shown in fig. 4-9, a sliding limiting mechanism 13 is disposed between the connecting seat 3 and the front cover 5, and the sliding limiting mechanism 13 includes a pair of limiting pins 14 located in the connecting seat 3 and respectively penetrating through two sides of the connecting seat 3, a plurality of limiting grooves 15 symmetrically disposed on the front cover 5 in a left-right manner, and a control switch 16 for controlling the lateral movement of the two limiting pins 14; specifically, the method comprises the following steps: the supporting part 8 comprises supporting plates 18 positioned at the left side and the right side, a transverse groove 17 penetrating through the supporting plates 18 at the two sides is arranged at the lower part of the supporting part 8, the two limiting pins 14 are arranged in the transverse groove 17, and the limiting pins 14 respectively penetrate through the supporting plates 18 at the two sides; a spring 19 is also arranged between the two limit pins 14; the control switch 16 is embedded in the connecting seat 3, and the control switch 16 is clamped between the supporting plates 18 at the two sides; the control switch 16 is in sliding fit with the support portion 8, specifically: a vertical guide groove 20 is arranged on the back surface of the control switch 16, a guide post 21 is arranged at the corresponding position of the supporting part 8, when the control switch is installed, the guide post 21 is inserted into the guide groove 20, the guide post 21 slides up and down in the guide groove 20, and a limiting screw 22 for limiting the disengagement of the control switch 16 is connected to the guide post 21; a pressing cap 16a protruding upwards from the connecting base 3 is arranged at the top of the control switch 16, and the control switch 16 slides downwards along the connecting base 3 by pressing the pressing cap 16 a; the lower part of the control switch 16 is provided with an isosceles trapezoid-shaped groove 23, the isosceles trapezoid-shaped groove 23 is provided with two symmetrical bevel edges 24, the two limit pins 14 are provided with guide posts 25 protruding out of the outer walls of the limit pins 14, the guide posts 25 are positioned in the isosceles trapezoid-shaped groove 23, in the sliding process of the control switch 16, the spring 19 is always in a compressed state, the guide posts 25 are abutted against the bevel edges 24, and in the transverse motion process of the guide posts 25 along the bevel edges 24, the guide posts 25 drive the limit pins 14 to transversely move away from the limit grooves 15; the front cover 5 is provided with two bilaterally symmetrical side plates 26, and the limiting grooves 15 are arranged at the positions of the side plates 26 close to the avoidance window 6 along the longitudinal direction, specifically: the position of the side plate 26 close to the avoidance window 6 is provided with a convex rib 27 protruding forwards, and the limit groove 15 is arranged on the inner side of the convex rib 27 along the longitudinal direction.

The working principle is as follows: in the waist rest height locking state, as shown in fig. 7, the spring 19 between the two limit pins 14 is in a pre-tightening state, the guide posts 25 on the limit pins 14 are respectively abutted with the bevel edges 24 on two sides below the isosceles trapezoid-shaped groove 23, the limit pins 14 are inserted into the limit grooves 15, and at the moment, the connecting seat 3 and the support frame 2 are locked in a sliding manner; the height of the waist support 1 needs to be adjusted, when the waist support 1 is unlocked, the pressing cap 16a is pressed downwards to enable the control switch 16 to slide downwards relative to the connecting seat 3, in the downward sliding process of the control switch 16, because the guide post 25 is abutted to the inclined edges 24 on two sides above the isosceles trapezoid-shaped groove 23, the two limiting pins 14 move inwards respectively, the spring 19 between the limiting pins 14 is compressed, the limiting pins 14 leave the limiting grooves 15, and as shown in fig. 8, at the moment, the connecting block 3 and the support frame 2 are unlocked in a sliding mode, and the height of the waist support 1 can be adjusted; after the adjustment is completed, the limit pin 14 is reversely reset under the reset elastic force action of the spring 19 and is clamped with the limit groove 15. In addition, in the use of waist back 1, waist back 1 rotates with connecting seat 3 to be connected, and waist back 1 can rotate in order to laminate human waist according to the change of human posture, uses more humanized, and the result of use is better.

Claims

1. The utility model provides a high adjusting device is leaned on to seat waist which characterized in that: the waist support comprises a waist support and a support frame, wherein a connecting seat is arranged between the waist support and the support frame; the front end and the rear end of the connecting seat are respectively connected with the waist rest and the supporting frame, and the rear end of the connecting seat is in sliding fit with the supporting frame; a sliding limiting mechanism is arranged between the connecting seat and the supporting frame and comprises a pair of limiting pins which respectively penetrate out of two sides of the connecting seat, a plurality of limiting grooves which are symmetrically arranged on the supporting frame at the left and right sides and a control switch for controlling the transverse movement of the two limiting pins; the movement direction of the control switch is vertical to the movement direction of the limit pin, and the limit grooves are longitudinally arranged on the support frame at intervals; the control switch is embedded in the connecting seat and is in sliding fit with the connecting seat, and the limiting pin is inserted into or separated from the limiting groove in response to the action of the control switch.

2. The seat lumbar height adjustment device according to claim 1, characterized in that: the limiting pin is clamped between the connecting seat and the control switch, a spring is arranged between the two limiting pins, an isosceles trapezoid groove is formed in the lower portion of the control switch, the isosceles trapezoid groove is provided with two symmetrical oblique edges, a guide post protruding out of the outer wall of the limiting pin is arranged on the limiting pin, and the guide post is located in the trapezoid groove and is abutted to the oblique edges.

3. The seat lumbar height adjustment device according to claim 2, characterized in that: the lower part of the connecting seat is provided with a transverse groove, and the limiting pin is arranged in the transverse groove.

4. The seat lumbar height adjustment device according to claim 2, characterized in that: the connecting seat comprises supporting plates on the left side and the right side, the control switch is clamped between the supporting plates, a pressing cap protruding out of the connecting seat is upwards arranged on the control switch, a vertical guide groove is formed in the control switch, a guide pillar is arranged at the corresponding position of the connecting seat and inserted into the guide groove, and a limiting screw used for limiting the control switch to be disengaged is connected onto the guide pillar.

5. The seat lumbar height adjustment device according to claim 1, characterized in that: the support frame comprises a rear cover and a front cover, the front cover is provided with an avoiding window for the connecting seat to penetrate out, the connecting seat comprises a sliding part located at the rear and a supporting part exposed out of the avoiding window, and the sliding part is clamped between the front cover and the rear cover.

6. The seat lumbar height adjustment device according to claim 5, characterized in that: the front cover is provided with two lateral plates which are symmetrical left and right, and the limiting grooves are arranged at the positions of the lateral plates close to the avoiding window along the longitudinal direction.

7. The seat lumbar height adjustment device according to claim 6, wherein: the side plate position close to the avoiding window is provided with a convex rib protruding forwards, and the limiting groove is arranged on the inner side of the convex rib along the longitudinal direction.

8. The seat lumbar height adjustment device according to claim 5, characterized in that: the front end of the supporting part is rotationally connected with the waist rest.

9. The seat lumbar height adjustment device of claim 8, wherein: the supporting part front end be equipped with an curved elastic connection spare, elastic connection spare left and right both ends outstanding spindle nose has, the waist lean on and be equipped with the rotation supporting part on both sides, the rotation supporting part on be equipped with the draw-in groove, the spindle nose card go into in the draw-in groove.