CN210027147U - Car seat with air bag type waist support adjusting mechanism - Google Patents

Abstract

The utility model relates to an automobile seat with an air bag type waist support adjusting mechanism, which relates to the technical field of automobile seats and aims to solve the problems that when the automobile seat is suitable for the comfort requirement of different passengers on the seat, the operation steps are complex and difficult, the convenience is low, the automobile seat comprises a seat, a seat back and handrails, the seat back comprises a frame body, a back cushion and a seat back sleeve, the back cushion is fixedly connected with the frame body and is positioned at one side of the frame body close to the seat, the seat back sleeve wraps the frame body and the back cushion, an air bag type waist support adjusting device is arranged between the frame body and the back cushion, the air bag type waist support adjusting device comprises a plurality of air bags which are vertically distributed on the frame body, an air pump arranged in the seat and a control device arranged between the air pump and the air bags, the utility model can be manually controlled by workers, and the height and the thickness of the seat, the comfort requirements of different passengers can be met, and the convenience of the passenger seat is improved.

Description

Car seat with air bag type waist support adjusting mechanism

Technical Field

The utility model belongs to the technical field of car seat technique and specifically relates to a car seat with air pocket formula waist holds in palm adjustment mechanism is related to.

Background

A car seat is an important component in a car that provides support and safety protection for the occupants. With the increasingly competitive automobile market, the comfort of the seat also becomes an important evaluation standard for evaluating the whole automobile seat and the whole automobile. The back waist support is an important device for improving the comfort of the seat framework. The backrest waist support is assembled on the backrest framework assembly and used for supporting the waist of a passenger and relieving driving fatigue.

The automobile seat backrest with the detachable waist support comprises an inverted U-shaped backrest framework, a backrest cushion arranged in the inverted U-shaped backrest framework, a waist support assembly and an adjusting handle matched with the waist support assembly, wherein an opening for mounting the waist support assembly is arranged at the bottom of the backrest cushion and corresponds to the waist of a human body, the waist support assembly is mounted on the opening, the adjusting handle is mounted on the waist support assembly and is located at the bottom end of the back of the seat backrest, and an adjusting end of the adjusting handle is located on the outer side of the inverted U-shaped backrest framework. The automobile seat backrest with the detachable waist support can be assembled and disassembled with the waist support assembly and the adjusting handle as required, is simple to operate, can be customized individually, can be adjusted manually to adjust the deformation of the waist supporting plate, achieves the effect of adjusting the waist support, is lower in cost than an electrically adjusted waist support device, and is convenient and effective to adjust manually in real time.

However, the above-described technique has the following drawbacks: when adapting to the different comfort requirements of the passengers on the seat, the passengers need to adjust the waist support, the operation steps are complicated, the operation is difficult, and the convenience is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car seat with air pocket formula waist holds in palm adjustment mechanism can be by staff manual control to height and thickness that convenient regulation seat waist held in the palm can adapt to the different travelling comfort requirements of taking personnel, thereby promotes its convenience.

The above object of the present invention can be achieved by the following technical solutions: the utility model provides an automobile seat with air pocket formula waist holds in palm adjustment mechanism, includes the seat support, the back of the chair and handrail, the back of the chair includes support body, back pad and back of the chair cover, back pad and support body fixed connection to be located the support body and be close to one side of seat support, the back of the chair cover is with including support body and back pad parcel the air pocket formula waist has been installed between support body and the back pad and has held in the palm adjusting device, air pocket formula waist holds in the palm adjusting device and includes a plurality of air pockets of vertical distribution on the support body air pump that sets up in the seat support and entering controlling means between air pump and the air pocket.

Implement above-mentioned technical scheme, when the person of taking need hold in the palm outside the waist regulation, in order to adapt to oneself when to the requirement of travelling comfort, at first through controlling means, the control air pump inflates the air pocket, make the air pocket inflation, and extrude the back pad when the air pocket inflation, make the position that the back pad is located the air pocket outside outwards ejecting, pass through controlling means when the needs hold in the palm inside the regulation with the waist, deflate the air pocket, when making the air pocket shrink, relax the extrusion to the back pad, make the back pad be located the position outside the air pocket inwards sunken, realize the regulation to the waist support, made things convenient for the adjustment of person of taking to the travelling comfort, thereby promote its convenience and travelling comfort.

The utility model discloses further set up to: the control device comprises a plurality of control buttons and valves, the control buttons are connected with the valves, air inlets are formed in the valves, air inlet pipes are connected between the air inlets and the air pump, multiple groups of air outlets are formed in one side of the valves, the air outlets are arranged in a matched mode in pairs, one group of air outlets are located above the air outlets relatively, exhaust valves are connected with air outlet pipes, the air outlet pipes are connected with air bags respectively, and the air outlet pipes are located below the air outlets relatively and are provided with air inlet valves.

Implement above-mentioned technical scheme, when the inflation of controlling means control air pocket is passed through to needs, the control air pump passes through the intake pipe and transmits the air to valve department, under control button's effect, the discharge valve who is arranged in the gas outlet of valve one side and opens, control is through in its outlet duct input outlet duct, the rethread outlet duct transmits to the air pocket, it is closed with control button again, make discharge valve close, the realization is expanded the air pocket, when needs are deflated the air pocket, make the admission valve open through control button, gas outgoing in the air pocket, the realization is with the air pocket shrink, thereby promote its convenience.

The utility model discloses further set up to: set up the tight hole in top that two liang of cooperations of multiunit set up on the valve, the tight hole in top corresponds and link up the setting with the gas outlet be provided with the tight piece in top in the tight hole in top, a set of the tight piece in top that lies in the tight hole in top relatively stretch into the one end of valve with discharge valve stretches into the one end clearance of valve and agrees with the setting, and the tight piece in top that its relative position in below top stretches into the one end of valve and the one end cooperation setting that the admission valve stretches into the valve.

When the technical proposal is implemented, when the expansion of the air bag is controlled by the control device, the air pump is controlled to transmit air to the valve through the air inlet pipe, the jacking block positioned above moves towards the inside of the valve along the jacking hole through the control button, the jacking block extends into an exhaust valve at one end of the valve and is abutted against one end of the valve, so that gas can only pass through the air inlet valve and is input into the air outlet pipe through the air outlet pipe and then is transmitted into the air bag through the air outlet pipe to realize the expansion of the air bag, when the air bag needs to be deflated, the control button is firstly released, so that the jacking block moves to the outer side of the valve from the jacking hole, the air inlet valve is separated from the puller block, the puller block positioned below moves towards the interior of the valve along the puller hole through the control button, make the admission valve open, with the gas outgoing in the air pocket, realize contracting the air pocket to promote its convenience.

The utility model discloses further set up to: the admission valve includes the butt piece and the movable block that sets up in the butt piece, the lateral wall and the gas outlet butt setting of butt piece the butt piece stretches out the one end of valve and has seted up a plurality of exhaust holes to its one end that stretches into the valve has seted up the tight mouth in top, is equipped with movable spring in the butt piece simultaneously, the inner wall connection in exhaust hole has been seted up with the butt piece to movable spring's one end, and the other end is connected with the movable block, the tight mouthful inner wall in top is located to the movable block lid.

Implement above-mentioned technical scheme, when needs deflate the air pocket, make the tight piece in top that is located the below along the tight hole in top to valve inside motion through control button, its tight piece in top is located the inside one end of valve and extrudees the movable block to the butt piece from the position of the tight mouth in top inside, make the admission valve open, with the gas outgoing in the air pocket, the realization is with the air pocket shrink, after adjusting the completion, relax control button again, the movable block is under movable spring's effect, to the position motion of the tight mouth in top from the butt piece, until will push up tight mouthful sealedly, thereby promote its convenience.

The utility model discloses further set up to: the one end that the tight piece stretches out the valve in top is connected with the tight spring in top, the tight spring one end in top is connected with the one end that the tight piece in top kept away from the valve, and the other end is connected with the outer wall of valve.

Implement above-mentioned technical scheme, through the one end that stretches out the valve at the tight piece in top be connected with the tight spring in top, take personnel when adjusting the completion back, relax control button's control, control button can kick-back rapidly under the effect of the tight spring in top, conveniently take personnel to carry out next operation to promote its convenience.

The utility model discloses further set up to: the center of the control button is rotationally connected with the valve and is positioned on the group of jacking holes, and the upper half part and the lower half part of the control button are respectively matched with jacking blocks in the group of jacking holes.

Implement above-mentioned technical scheme, when the person of taking needs to adjust the waist and hold in the palm, directly push down control button's first half or the latter half, let control button drive the tight piece action of top, can adjust valve's state, make things convenient for staff's operation to can guarantee the synchronism of its valve motion, thereby promote its convenience.

The utility model discloses further set up to: and a sealing ring is arranged at the position where the jacking block and one end of the exhaust valve, which extend into the valve, are abutted against the valve.

Implement above-mentioned technical scheme, through the sealing washer that one end and the valve butt position that stretches into the valve at tight piece in top and discharge valve set up, can keep the leakproofness of its valve when tight piece in the top in the valve moves with discharge valve, prevent that a large amount of gas from spilling over from the valve gap, influence its waist and hold in the palm regulation effect to promote its regulation effect.

The utility model discloses further set up to: and a plurality of telescopic folding seams are arranged at the position of the chair back sleeve close to the waist.

By implementing the technical scheme, the plurality of telescopic folding seams are arranged at the position, close to the waist, of the seat back sleeve, so that the seat back sleeve can be prevented from being cracked and damaged due to frequent extension and shortening after being jacked and relaxed by an air bag for many times, and the service life of the seat back sleeve is prolonged.

To sum up, the utility model discloses a beneficial technological effect does:

1. when a passenger needs to adjust the waist support outwards to meet the requirement of the passenger on comfort, firstly, the air pump is controlled to inflate the air bag through the control device, so that the air bag is expanded, the backrest cushion is extruded while the air bag is expanded, the position, located on the outer side of the air bag, of the backrest cushion is ejected outwards, when the waist support needs to be adjusted inwards, the air bag is deflated through the control device, the extrusion on the backrest cushion is relaxed while the air bag is reduced, the position, located on the outer side of the air bag, of the backrest cushion is recessed inwards, the waist support is adjusted, the comfort of the passenger can be adjusted conveniently, and convenience and comfort of the passenger are improved;

2. when the inflation of the air bag is required to be controlled by the control device, the air pump is controlled to transmit air to the valve through the air inlet pipe, the jacking block positioned above the air pump moves towards the inside of the valve along the jacking hole through the control button, the jacking block extends into an exhaust valve at one end of the valve and abuts against one end of the valve, so that the air can only pass through the air inlet valve, the air is input into the air outlet pipe through the air outlet pipe, and then is transmitted into the air bag through the air outlet pipe, the air bag is inflated, when the air bag needs to be deflated, the control button is firstly released, the jacking block moves towards the outer side of the valve from the jacking hole, the air inlet valve is separated from the jacking block, the jacking block positioned below the air bag moves towards the inside of the valve along the jacking hole through the control button, the air inlet valve is opened, the air in the air bag is exhausted, the air bag is;

3. when needs deflate the air pocket, make the tight piece in top that is located the below along the tight hole in top to valve inside motion through control button, its tight piece in top is located the inside one end of valve and extrudees the movable block from the position of the tight mouth in top to the butt piece inside, make the admission valve open, with the gas outgoing in the air pocket, the realization is with the air pocket shrink, after adjusting the completion, relax control button again, the movable block is under movable spring's effect, to the position motion of the tight mouth in top from the butt piece, until will push up tight mouthful sealed, thereby promote its convenience.

Drawings

Fig. 1 is a schematic view of the overall structure of the car seat with the air bag type lumbar support adjusting mechanism provided by the present invention.

Fig. 2 is a schematic view of the whole structure of the car seat with the air bag type waist support adjusting mechanism without the seat back cover.

Fig. 3 is a schematic view of the overall structure of the control device in the car seat with the air bag type lumbar support adjusting mechanism provided by the present invention.

Fig. 4 is a sectional view taken along a-a of fig. 3.

In the figure: 1. a chair seat; 2. a chair back; 21. a frame body; 22. a backrest cushion; 23. a chair back sleeve; 231. the folding seam is stretched and folded; 3. a handrail; 4. an air bag type waist support adjusting device; 41. an air bag; 42. an air pump; 5. a control device; 51. a control button; 52. a valve; 521. an air inlet; 522. an air inlet pipe; 523. an air outlet; 524. an exhaust valve; 525. an air outlet pipe; 526. an intake valve; 5261. a butting block; 5262. a movable block; 5263. an exhaust hole; 5264. tightly jacking the opening; 5265. a movable spring; 53. jacking the hole; 531. a jacking block; 532. the spring is tightly propped; 533. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the car seat with the air bag type lumbar support adjusting mechanism disclosed by the present invention, comprising a seat 1, a seat back 2 and armrests 3, the seat back 2 comprises a frame body 21, a backrest cushion 22 and a seat back cover 23, the backrest cushion 22 is fixedly connected with the frame body 21 and is located at one side of the frame body 21 close to the seat 1, the seat back cover 23 wraps the frame body 21 and the backrest cushion 22, a plurality of telescopic folding seams 231 are arranged at the position of the seat back cover 23 close to the waist, an air bag type lumbar support adjusting device 4 is arranged between the frame body 21 and the backrest cushion 22, the air bag type lumbar support adjusting device 4 comprises a plurality of air bags 41 vertically distributed on the frame body 21, a control device 5 is arranged in the seat 1 and a control device 5 is arranged between the air pump 42 and the air bags 41, the control device 5 comprises a plurality of control buttons 51 and a valve 52, the control buttons 51 are connected with the valve 52, an air inlet pipe 522 is connected between the air, a plurality of groups of air outlets 523 which are arranged in a pairwise matching manner are formed in the valve 52, the air outlets 523 which are positioned relatively above in one group of air outlets 523 are connected with exhaust valves 524, the exhaust valves 524 are respectively connected with air outlet tubes 525, the air outlet tubes 525 are respectively connected with the air bag 41, the air inlet valves 526 are arranged on the air outlets 523 which are positioned relatively below, the center of the control button 51 is rotatably connected with the valve 52, and the upper half part and the lower half part of the control button are respectively arranged in a matching manner with the jacking blocks 531 positioned in one group of jacking holes 53; when a passenger needs to adjust the waist support outwards to meet the requirement of comfort, when the control device 5 needs to control the inflation of the air bag 41, the air pump 42 is controlled to transmit air to the valve 52 through the air inlet pipe 522, the upper half part of the control button 51 is pressed downwards, so that the exhaust valve 524 arranged in the air outlet 523 positioned at one side of the valve 52 is opened, the air is input into the air outlet pipe 525 through the air outlet pipe 525, and then is transmitted into the air bag 41 through the air outlet pipe 525, the air bag 41 is inflated, the air bag 41 is simultaneously extruded to the backrest cushion 22 when being inflated, the position of the backrest cushion 22 positioned at the outer side of the air bag 41 is outwards ejected, when the air bag 41 needs to be deflated, the lower half part of the control button 51 is pressed downwards, the upper half part thereof is opened, the air inlet valve 526 is opened, the air in the air bag 41 is exhausted, the air bag 41 is simultaneously contracted, the extrusion to the backrest cushion 22 is relaxed, so that the position of the backrest cushion 22, which is positioned at the outer side of the air bag 41, is inwards sunken, the waist support is adjusted, the comfort of a passenger is conveniently adjusted, and the existence of the telescopic folding seam 231 can prevent the frequent extension and shortening of the backrest sleeve 23 to cause cracks and damages after the backrest sleeve is jacked and relaxed by the air bag 41 for many times.

In order to synchronously control the inflation and deflation of the air bag through the control button, as shown in fig. 3 and 4, a plurality of sets of tightening holes 53 are formed on the valve 52, the tightening holes 53 are correspondingly arranged with and communicated with the air outlet 523, a tightening block 531 is arranged in the tightening holes 53, one end of the tightening block 531, which is relatively positioned in the upper hole, in one set of tightening holes 53 extends into the valve 52 is in clearance fit with one end of the exhaust valve 524 extending into the valve 52, one end of the tightening block 531, which is relatively positioned in the lower hole, extends into the valve 52 is in fit with one end of the intake valve 526 extending into the valve 52, the intake valve 526 comprises a butting block 5261 and a movable block 5262 arranged in the butting block 5261, the side wall of the butting block 5261 is abutted against the air outlet 523, one end of the butting block 5261 extending out of the valve 52 is provided with a plurality of exhaust holes 5263, and one end of the abutting block 5261 extending into the valve 52 is provided with a tightening opening 5264, meanwhile, a movable spring 5265 is installed in the abutting block 5261, one end of the movable spring 5265 is connected with the inner wall, provided with an exhaust hole 5263, of the abutting block 5261, the other end of the movable spring 5262 is connected with the movable block 5262, the movable block 5262 is covered on the inner wall of the tightening opening 5264, one end, extending out of the valve 52, of the tightening block 531 is connected with a tightening spring 532, one end of the tightening spring 532 is connected with one end, far away from the valve 52, of the tightening block 531, the outer wall of the valve 52 at the other end of the tightening spring is connected, and a sealing ring 533 is installed at the position, abutted against the valve 52, of one end; when the inflation of the air bag 41 needs to be controlled by the control device 5, the air pump 42 is controlled to transmit air to the valve 52 through the air inlet pipe 522, the tightening block 531 on the upper side moves towards the inside of the valve 52 along the tightening hole 53 through the control button 51, the end exhaust valve 524 of the tightening block 531 extending into the valve 52 is abutted against one end extending into the valve 52, so that air can only pass through the air inlet valve 526, the air is input into the air outlet pipe 525 through the air outlet pipe 525, and then transmitted into the air bag 41 through the air outlet pipe 525, so as to inflate the air bag 41, when the air bag 41 needs to be deflated, the tightening block 531 on the lower side moves towards the inside of the valve 52 along the tightening hole 53 through the control button 51, one end of the tightening block 531 in the valve 52 presses the movable block 5262 from the position of the tightening hole 5264 to the abutting block 5261, so that the air inlet valve is opened, and the air in the air bag 41 is exhausted, the air bag 41 is contracted, after the adjustment is completed, the control button 51 is loosened, the movable block 5262 moves from the abutting block 5261 to the position of the jacking opening 5264 under the action of the movable spring 5265 until the jacking opening 5264 is sealed, when a passenger loosens the control on the control button 51 after the adjustment is completed, the control button 51 can rebound rapidly under the action of the jacking spring 532, the passenger can conveniently perform the next operation, in addition, the sealing ring 533 can keep the sealing performance of the valve 52 when the jacking block 531 and the exhaust valve 524 in the valve 52 act, the overflow of a large amount of air from the gap of the valve 52 is prevented, and the waist support adjusting effect is influenced.

Working principle (process): when a passenger needs to adjust the waist support outwards to meet the requirement of the passenger on comfort, when the control device 5 needs to control the inflation of the air bag 41, the air pump 42 is controlled to transmit air to the valve 52 through the air inlet pipe 522, the upper half part of the control button 51 is pressed down, the tightening block 531 positioned above moves towards the inside of the valve 52 along the tightening hole 53, the tightening block 531 extends into the exhaust valve 524 at one end of the valve 52 and abuts against one end extending into the valve 52, so that air can only pass through the air inlet valve 526, the air is input into the air outlet pipe 525 through the air outlet pipe 525 and then transmitted into the air bag 41 through the air outlet pipe 525, the air bag 41 is inflated, the back cushion 22 is extruded when the air bag 41 is inflated, the position of the back cushion 22 positioned outside the air bag 41 is ejected outwards, when the air bag 41 needs to be deflated, the lower half part of the control button 51 is pressed down, the pushing block 531 at the lower part moves towards the inside of the valve 52 along the pushing hole 53, one end of the pushing block 531, which is positioned at the inside of the valve 52, extrudes the movable block 5262 from the position of the pushing opening 5264 to the inside of the abutting block 5261, so that the air inlet valve 526 is opened, the air in the air bag 41 is exhausted, the air bag 41 is contracted, after the adjustment is finished, the control button 51 is released, the movable block 5262 moves from the abutting block 5261 to the position of the pushing opening 5264 under the action of the movable spring 5265 until the pushing opening 5264 is sealed, meanwhile, the air bag 41 releases the extrusion on the backrest cushion 22, so that the position of the backrest cushion 22, which is positioned at the outer side of the air bag 41, is inwards sunken, the waist support is adjusted, the comfort of a passenger is convenient to adjust, the existence of the telescopic folding seam 231 can prevent the seat back sleeve 23 from being cracked and damaged due to the constant extension and shortening after being pushed up and loosened by the air bag 41 for many times, after the adjustment of the passenger is completed, when the control of the control button 51 is released, the control button 51 can be quickly rebounded under the action of the jacking spring 532, so that the passenger can conveniently perform the next operation, and the sealing ring 533 can keep the sealing performance of the valve 52 when the jacking block 531 and the exhaust valve 524 in the valve 52 act, so that a large amount of gas is prevented from overflowing from the gap of the valve 52, and the waist support adjusting effect is prevented from being influenced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides an automobile seat with air pocket formula waist holds in palm adjustment mechanism, includes seat support (1), back of the chair (2) and handrail (3), its characterized in that: back of the chair (2) is including support body (21), back pad (22) and back of the chair cover (23), back pad (22) and support body (21) fixed connection to be located support body (21) and be close to one side of seat support (1), back of the chair cover (23) is including support body (21) and back pad (22) parcel frame (21) and back pad (22) have been installed the air pocket formula waist and have been held in the palm adjusting device (4) between support body (21) and back pad (22), air pocket formula waist holds in the palm adjusting device (4) and includes a plurality of air pockets (41) of vertical distribution on support body (21) air pump (42) that set up in seat support (1) and advance controlling means (5) between air pump (42) and air pocket (41).

2. The car seat with an air bag lumbar support adjustment mechanism of claim 1, wherein: controlling means (5) include a plurality of control button (51) and valve (52), control button (51) are connected with valve (52), air inlet (521) have been seted up on valve (52), be connected with intake pipe (522) between air inlet (521) and air pump (42), and gas outlet (523) that two liang of cooperations of multiunit set up are seted up to valve (52) one side, and are a set of discharge valve (524) are connected to gas outlet (523) that is located the top relatively in gas outlet (523), discharge valve (524) all are connected with outlet duct (525), and outlet duct (525) are connected with air pocket (41) respectively, install admission valve (526) on its relative below gas outlet (523).

3. The car seat with the air bag lumbar support adjustment mechanism of claim 2, wherein: set up the tight hole in top (53) that two liang of cooperations of multiunit set up on valve (52), the tight hole in top (53) corresponds and link up the setting with gas outlet (523) be provided with in the tight hole in top (53) and push up tight piece (531), a set of in the tight hole in top (53) relative in top tight piece (531) in the hole in top (53) stretch into the one end of valve (52) with discharge valve (524) stretch into the one end clearance agrees with the setting of valve (52), its relative position in the tight hole in below top (53) one end that tight piece (531) stretched into valve (52) and admission valve (526) stretch into the one end cooperation setting of valve (52).

4. The car seat with the air bag lumbar support adjustment mechanism of claim 3, wherein: the air inlet valve (526) comprises a butting block (5261) and a movable block (5262) arranged in the butting block (5261), the side wall of the butting block (5261) is abutted to the air outlet (523), one end, extending out of the valve (52), of the butting block (5261) is provided with a plurality of exhaust holes (5263), one end, extending into the valve (52), of the butting block is provided with a jacking port (5264), meanwhile, a movable spring (5265) is arranged in the butting block (5261), one end of the movable spring (5265) is connected with the inner wall, provided with the exhaust holes (5263), of the butting block (5261), of the inner wall, the other end of the inner wall is connected with the movable block (5262), and the movable block (5262) is covered on the inner wall of the jacking port (5264).

5. The car seat with an air bag lumbar support adjustment mechanism of claim 4, wherein: one end, extending out of the valve (52), of the jacking block (531) is connected with a jacking spring (532), one end of the jacking spring (532) is connected with one end, far away from the valve (52), of the jacking block (531), and the other end of the jacking spring is connected with the outer wall of the valve (52).

6. The car seat with an air bag lumbar support adjustment mechanism of claim 5, wherein: the center of the control button (51) is rotationally connected with the valve (52) and is positioned on the group of tightening holes (53), and the upper half part and the lower half part of the control button are respectively matched with tightening blocks (531) in the group of tightening holes (53).

7. The car seat with the air bag lumbar support adjustment mechanism of claim 3, wherein: and a sealing ring (533) is arranged at the position where one end of the jacking block (531) and the exhaust valve (524) extending into the valve (52) is abutted against the valve (52).

8. The car seat with an air bag lumbar support adjustment mechanism of claim 1, wherein: a plurality of telescopic folding seams (231) are arranged at the position of the chair back sleeve (23) close to the waist.

Images