CN211107640U

CN211107640U - Backrest and armrest linkage foldable seat and baby carriage with same

Info

Publication number: CN211107640U
Application number: CN201921904942.7U
Authority: CN
Inventors: 彭水毅; 祝军旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-28
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a lean against and can link folding seat and be equipped with perambulator of this seat with handrail, the seat including take seat portion, downside pin joint in take seat portion rear side lean against, the rear side with the handrail of taking seat portion rear side pin joint, lean against and be provided with between downside and the seat portion rear side and be used for restricting both relative rotation's the locking mechanical system that leans against, be provided with between handrail rear side and the seat portion rear side and be used for restricting both relative rotation's handrail locking mechanical system, just lean against and be provided with the impeller between downside and the handrail locking mechanical system, the unblock is leaned against locking mechanical system, and the forward rotation leans against and can drive the impeller removes and unblock toward the direction of handrail locking mechanical system, handrail and leaning against can link folding together promptly, so, the folding operation of seat is very simple and convenient.

Description

Backrest and armrest linkage foldable seat and baby carriage with same

Technical Field

The utility model relates to an infant product field especially relates to a lean against and can link folding seat and be equipped with perambulator of this seat with the handrail.

Background

The seat generally includes a seat portion, a backrest whose lower side is pivotally connected to the rear side of the seat portion, an armrest whose rear side is connected to the rear side of the seat portion or/and the lower side of the backrest, and a backrest locking mechanism for limiting the rotation of the backrest and the seat portion is disposed between the lower side of the backrest and the rear side of the seat portion. As for the armrests, some are detachably connected with the sitting portion or/and the backrest, so that the armrests are detached after the backrest and the sitting portion are folded; the back rest locking mechanism and the armrest locking mechanism are sequentially unlocked twice when the seat is folded, so that the seat, the armrest and the back rest can be completely folded, and the folding operation of the whole seat is complicated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming, provide one kind and lean against with handrail can link folding seat and be equipped with the perambulator of this seat, but leaning against of seat unblock handrail locking mechanical system at rotatory in-process to lean against and can link foldingly with the handrail.

In order to achieve the above object, the utility model adopts the following technical scheme:

a backrest and armrest linkage foldable seat comprises a sitting portion, a backrest with a lower side pivoted to the rear side of the sitting portion, an armrest with a rear side pivoted to the rear side of the sitting portion, a backrest locking mechanism arranged between the backrest lower side and the sitting portion and used for limiting the relative rotation of the backrest and the armrest, an armrest locking mechanism arranged between the armrest rear side and the sitting portion and used for limiting the relative rotation of the armrest and the armrest locking mechanism, a pushing member arranged between the backrest lower side and the armrest locking mechanism and used for unlocking the backrest locking mechanism, and the backrest rotating forwards can drive the pushing member to move towards the armrest to unlock the armrest locking mechanism.

The lower end of the backrest is provided with a left backrest pivoting seat and a right backrest pivoting seat; the handrail seat comprises a first fixing seat, a left second fixing seat, a right second fixing seat, two backrest pin-joint seats, two handrail seat pins, two first fixing seats, two second fixing seats, two handrail seat pins, two handrail seat.

The backrest locking mechanism is arranged between the backrest pivoting seat and the first fixing seat, and the armrest locking mechanism is arranged between the armrest and the second fixing seat.

The armrest locking mechanism comprises a first tooth groove and a second tooth groove which are respectively arranged on the opposite sides of the armrest and the second fixed seat, a first gear which can be relatively arranged between the first tooth groove and the second tooth groove in a left-right moving mode, and a first spring which is arranged between the first gear and the bottom wall of the first tooth groove, under the action of the first spring, the first gear is simultaneously meshed with the first tooth groove and the second tooth groove, and the armrest locking mechanism is in a locking state.

The pushing piece comprises a main body and one or more pushing parts extending from one side of the main body towards the handrail; an accommodating cavity is formed in one side, away from the second tooth groove, of the second fixed seat, and a main body of the pushing piece is arranged between the accommodating cavity and the backrest pivoting seat in a left-right moving mode; a partition board is arranged between the second tooth groove and the containing cavity, one or more through holes are correspondingly formed in the partition board, when the backrest rotates, the pushing piece is driven to move towards the handrail, and the pushing portion penetrates through the through holes to push the first gear to move towards the first tooth groove.

The back rest pivoting seat is provided with a first driving inclined plane and a first driven inclined plane which correspond to the pushing piece on the opposite sides.

The back-rest pivoting seat and the pushing piece are provided with corresponding bosses and grooves on opposite sides respectively, the bosses are inserted into the corresponding grooves, the bosses are provided with first driving inclined planes, and the side walls or the bottom walls of the grooves are provided with first driven inclined planes.

The first driven inclined plane is arranged on one side, facing the backrest pivoting seat, of the main body.

The backrest locking mechanism comprises a third tooth groove and a fourth tooth groove which are respectively arranged on the opposite sides of the backrest pivoting seat and the first fixed seat, a second gear which can be relatively arranged between the third tooth groove and the fourth tooth groove in a left-right moving mode, and a second spring which is arranged between the second gear and the bottom wall of the fourth tooth groove, under the action of the second spring, the second gear is simultaneously meshed with the third tooth groove and the fourth tooth groove, and the backrest locking mechanism is in a locking state.

A baby carriage comprises the seat with the backrest and the armrests capable of being folded in a linkage mode.

The utility model has the advantages that:

the backrest locking mechanism is unlocked and then the backrest is rotated, so that the armrest can also rotate towards the sitting part towards the lower front part, namely, the backrest and the armrest are rotated together to be close to the sitting part only by carrying out the unlocking operation of the backrest locking mechanism once, namely, the backrest and the armrest are linked and folded, and thus, the folding operation of the whole seat and the baby carriage with the seat is simpler and more convenient.

Drawings

Fig. 1 is a schematic plan view of the stroller of the present invention in an unfolded state, wherein the stroller is provided with a seat that can be folded by linking a backrest and a handrail;

FIG. 2 is a schematic perspective view of the chair of the present invention;

FIG. 3 is an enlarged schematic view of the portion B of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the seat of the present invention in the unfolded state, taken along the line A-A of FIG. 1;

FIG. 5 is an exploded view of the portion C of FIG. 4;

FIG. 6 is an exploded view of portion B of FIG. 2;

FIG. 7 is an exploded view at an angle of section B of FIG. 2;

FIG. 8 is an enlarged schematic view of the pusher member of the seat of the present invention;

FIG. 9 is an enlarged view of the backrest pivot seat of the chair of the present invention;

FIG. 10 is an enlarged schematic view of another angle of the pusher member of the seat of the present invention;

fig. 11 is a second schematic diagram of the second fixing seat of the seat according to the present invention;

fig. 12 is an enlarged schematic view of a seating portion of the seat of the present invention;

fig. 13 is a schematic plan view of the stroller of the present invention in a folded state.

Detailed Description

As shown in fig. 1 to 5, the utility model discloses a lean against and handrail can link folding seat 10, it including take seat 1, downside pin joint in take seat 1 rear side lean against 2, rear side with take seat 1 rear side pin joint handrail 3, lean against 2 downside and being provided with between the 1 rear side of seat and being used for restricting the locking mechanical system that leans against of both relative rotations, be provided with between 3 rear sides of handrail and the 1 rear side of seat and be used for restricting handrail locking mechanical system of both relative rotations, just lean against 2 downside and handrail locking mechanical system between be provided with impeller 4, the unblock is backed against locking mechanical system, and the back of forward rotation is 2 can drive impeller 4 removes and unblock towards the direction of handrail 3 handrail locking mechanical system, handrail 3 can take seat 1 to rotate relatively.

The lower end of the backrest 2 is provided with a left backrest pivoting seat and a right backrest pivoting seat 21; a first fixing base 11 and two second fixing bases 12 downside on the left and right sides are fixed connection in sitting portion 1, two back pivot joints 21 pin joint in both ends about first fixing base 11 upside respectively, two second fixing base 12 upside pin joint in two back pivot joints 21 outside respectively, the rear side of handrail 3 left and right sides pin joint in the outside of two second fixing base 12 upside respectively. In this embodiment, the rear side of the armrest 3, the upper sides of the two second fixing seats 12, the two backrest pivoting seats 21, and the upper side of the first fixing seat 11 are pivoted together by a pivot 110.

In this embodiment, a first receiving groove 13 (as shown in fig. 12) recessed downward is disposed in the middle of the rear side of the seat portion 1, and the lower side of the first fixing seat 11 is relatively and fixedly disposed in the first receiving groove 13, that is, the lower side of the first fixing seat 11 is disposed in the first receiving groove 13, and then the seat portion 1 and the first fixing seat 11 are fixedly connected upward from the bottom of the seat portion 1 by screws or other similar connecting members.

Corresponding to the two second fixing seats 12, second receiving grooves 14 are respectively formed in the rear side of the sitting portion and on two sides of the first receiving groove 13, and the lower sides of the second fixing seats 12 are relatively and fixedly arranged in the second receiving grooves 14. The fixing mode can be the same as that of the first fixing seat 11, and any other known and feasible structure can also be adopted.

The backrest locking mechanism is arranged between the backrest pivoting seat 21 and the first fixed seat 11, and the armrest locking mechanism is arranged between the armrest 3 and the second fixed seat 12.

As shown in fig. 6 to 11, the opposite sides of the backrest pivot seat 21 and the pushing member 4 are provided with a corresponding first driving inclined surface 211 and a corresponding first driven inclined surface 41, so that when the backrest rotates, the pushing member 4 can be driven to move toward the armrest 3 by the cooperation of the first driving inclined surface 211 and the first driven inclined surface 41. The first driving inclined plane 211 may be a continuous wave shape, or may be a single-sided inclined plane, and correspondingly, the first driven inclined plane may also be a corresponding wave shape, or may also be a single-sided inclined plane.

In this embodiment, the opposite sides of the backrest pivot seat 21 and the pushing member 4 are respectively provided with a corresponding boss 212 and a corresponding groove 42, the boss 212 is inserted into the corresponding groove 42, the boss 211 is provided with the first driving inclined surface 211, and the side wall or the bottom wall of the groove 42 is provided with the first driven inclined surface 41.

In this embodiment, the boss 212 is disposed on the backrest pivot seat 21, and the groove 42 is disposed on the pushing member 4. In other embodiments, the groove may be disposed on the backrest pivot seat 21, and the boss is disposed on the pushing member 4.

The armrest locking mechanism includes a first tooth groove 31 and a second tooth groove 121 respectively disposed on opposite sides of the armrest 3 and the second fixing seat 12, a first gear 122 disposed between the first tooth groove 31 and the second tooth groove 121 in a relatively movable manner, and a first spring (not shown) disposed between the first gear 122 and a bottom wall of the first tooth groove 31, wherein under the action of the first spring, the first gear 122 is simultaneously engaged with the first tooth groove 31 and the second tooth groove 121, so that the armrest 3 and the second fixing seat 12 are not relatively rotatable, that is, the armrest 3 and the sitting portion 1 are not relatively rotatable, and the armrest locking mechanism is in a locked state.

The pushing member 4 comprises a main body 43 and one or more pushing parts 44 extending from the main body 43 toward one side of the armrest 3, and the first driven inclined surface 41 is arranged on one side of the main body 43 toward the backrest pivot seat; an accommodating cavity 123 is formed in one side of the second fixed seat 12, which is away from the second tooth groove 121, and the main body 43 of the pushing member 4 is arranged between the accommodating cavity 123 and the backrest pivoting seat in a manner of moving left and right; a partition plate 124 is disposed between the second tooth groove 121 and the accommodating cavity 123, one or more through holes 125 are correspondingly disposed on the partition plate 124, when the backrest 3 rotates, the pushing member 4 is driven to move toward the armrest, the pushing portion 44 passes through the through hole 125 to push the first gear 122 to move toward the first tooth groove 31, when the first gear 122 is completely disengaged from the second tooth groove 121 and is only engaged with the first tooth groove 31, the armrest locking mechanism is unlocked, and the armrest 3 can rotate relative to the second fixing seat 12, that is, the armrest 3 can rotate relative to the seating portion 1.

At least the armrest locking mechanism is arranged between the rear side of one side of the armrest 3 and the upper side of the second fixing seat 12 on the corresponding side, that is, the armrest locking mechanism is not arranged between the rear side of the other side of the armrest 3 and the other second fixing seat 12, so that the armrest 3 can rotate after the armrest locking mechanism on one side is unlocked. In this embodiment, the armrest locking mechanism is disposed between the rear sides of the two sides of the armrest 3 and the upper sides of the two second fixing seats 12, so that the locking is more stable.

The backrest locking mechanism is disposed between at least one of the backrest pivoting bases 21 and the first fixing base 11, and includes a third tooth groove 213 and a fourth tooth groove 111 respectively disposed on opposite sides of the backrest pivoting base 21 and the first fixing base 11, a second gear 112 disposed between the third tooth groove 213 and the fourth tooth groove 111 and capable of moving left and right relatively, and a second spring (not shown) disposed between bottom walls of the second gear 112 and the fourth tooth groove 111, under the action of the second spring, the second gear 112 is simultaneously engaged with the third tooth groove 213 and the fourth tooth groove 111, so that the backrest 2 and the seat portion 1 cannot rotate relatively, and the backrest locking mechanism is in a locking state.

Preferably, in order to lock more reliably, in this embodiment, the backrest locking mechanisms are disposed between the backrest pivoting seats 21 at the left and right sides of the lower end of the backrest 2 and the first fixing seat 11.

A backrest unlocking mechanism used for unlocking the backrest locking mechanism is arranged on the upper side of the backrest 2. The backrest locking mechanism includes an operating member 22 (shown in fig. 4) connected to an upper side of the backrest in a relatively vertically movable manner, a driving member 23 disposed in the third teeth groove 213 in a relatively rotatable manner and in a relatively horizontally movable manner, and a steel wire having upper and lower ends connected to the operating member 22 and the driving member 23, respectively.

Preferably, a wire trough 24 is arranged in the backrest, the lower end of the wire trough 24 is communicated with a third tooth groove 213 of the backrest pivot seat 21, the steel wire is routed in the wire trough 24, the lower end of the steel wire extends into the third tooth groove 213 to be connected with a driving part 23, the driving part 23 is located between the bottom wall of the third tooth groove 213 and the second gear, the operating part 22 is moved upward, the steel wire is pulled to move upward, and therefore the driving part 23 moves toward the second gear 112.

Specifically, the opposite sides of the bottom walls of the driving member 23 and the third tooth grooves 213 are respectively provided with a second driving inclined surface 231 and a second driven inclined surface. When the operating member 22 is moved upward to pull the steel wire to move upward, the driving member 23 is pulled to rotate, and under the interaction between the second driving bevel 231 and the second driven bevel, the driving member 23 moves toward the second gear 112, so as to push the second gear 112 to move toward the fourth tooth space 111, until the second gear 112 is completely separated from the third tooth space 213 and only engaged with the fourth tooth space 111, at this time, the backrest locking mechanism is unlocked, and the backrest can rotate relative to the sitting portion.

In this embodiment, the back of the body upper side rear end is provided with the dodging hole that runs through from front to back in operating parts 22's corresponding position department, and operating parts 22 rear side is provided with operation recess (not shown), and operator's finger certainly dodge the hole and stretch into in the operation recess, then up remove operating parts 22, so, make things convenient for the operator to up remove operating parts 22.

A stopper 25 is provided at an upper side of the operating member 22 in the backrest 2, and a third spring (not shown) is provided between the operating member 22 and the stopper 25 to assist the return of the operating member 22.

The operating member 22 is provided with engaging lugs 221 at the left and right ends of the front side thereof, the engaging lugs 221 are provided with vertically extending long holes 222, correspondingly, two bolts 26 extending back and forth are provided in the backrest 2, and the two bolts 26 are respectively inserted into the long holes 222 of the two engaging lugs. Thus, the aim of connecting the operating piece and the backrest 2 which can move up and down relatively is fulfilled.

In other embodiments, the backrest unlocking mechanism may be any known and feasible structure, and the backrest unlocking mechanism is not the key point of the present invention, and therefore, the detailed description thereof is omitted.

The utility model discloses the folding principle of seat does:

when the backrest locking mechanism and the armrest locking mechanism are both in the locked state, the backrest and the armrest cannot rotate relative to the sitting portion, and the seat is locked in the unfolded use state.

When the seat is to be folded, the backrest 2 and the sitting portion 1 can rotate relatively by unlocking the backrest locking mechanism, at this time, the backrest 2 is rotated forward and downward, the backrest pivot seat 21 rotates along with the backrest pivot seat 21, the pushing member 4 moves in the direction of the armrest by the interaction of the first driving inclined surface 211 of the backrest pivot seat 21 and the first driven inclined surface 41 of the pushing member 4, so as to push the first gear 122 to move and further unlock the armrest locking mechanism, at this time, the armrest 3 naturally rotates downward due to the weight of the armrest 3, so that the armrest 3 and the backrest 2 rotate together in the direction of the sitting portion 1 until the backrest 2, the armrest 3 and the sitting portion 1 are relatively close together, and the seat is folded (as shown in fig. 12).

When the folded seat is to be unfolded, the backrest 2 and the armrest 3 are rotated upward, and when the folded seat is rotated to a certain angle, the first gear 122 and the second gear are reset under the action of the first spring and the second spring, so that the backrest 2 and the armrest 3 are automatically locked in the unfolded state.

Referring to fig. 1 and 13, the present invention also discloses a stroller, which includes the backrest and the armrest foldable seat 10.

In this embodiment, preferably, the stroller further includes a frame 5, the frame 5 includes a connecting seat 51, a front leg 52 having a rear end fixedly connected to the front side of the connecting seat 51, a rear leg 53 having a front side pivotally connected to the rear side of the connecting seat 51, a push handle rod 54 having a lower side pivotally connected to the connecting group, a sliding seat 55 relatively movably connected to the front leg 52, a first connecting member 56 having a lower end pivotally connected to the sliding seat 55, a second connecting member 57 having a front end pivotally connected to the upper end of the first connecting member 56 and the connecting seat 51, and a third connecting member 58 having a front end pivotally connected to the sliding seat 55 and the rear leg 53, and the seat is connected to the second connecting member 57.

When the frame 5 is folded, the sliding seat 55 moves downwards along the front leg 52, which pulls the front end of the third connecting piece 58 at the lower end of the first connecting piece 56 to move forwards and downwards in a rotating way, and the upper end of the first connecting piece 56 pulls the front side of the second connecting piece 57 to move downwards, which pulls the seat 10 to move together; the push handle rod 54 rotates forwards and downwards; the backrest locking mechanism can be unlocked before the frame 5 is folded or after the frame 5 is folded, so that the seat and the frame 5 are both folded, the whole volume of the baby carriage is small, and the baby carriage is convenient to carry and store.

In other embodiments, the frame 5 may be any other known structure, and the connection with the seat may be any known scheme.

Claims

1. The utility model provides a lean against and handrail foldable seat that links which characterized in that: the armrest locking mechanism comprises a sitting portion, a backrest with the lower side pivoted to the rear side of the sitting portion, and an armrest with the rear side pivoted to the rear side of the sitting portion, wherein a backrest locking mechanism used for limiting the relative rotation of the backrest and the sitting portion is arranged between the backrest lower side and the sitting portion rear side, an armrest locking mechanism used for limiting the relative rotation of the armrest and the sitting portion rear side is arranged between the armrest rear side and the sitting portion rear side, a pushing member is arranged between the backrest lower side and the armrest locking mechanism, the backrest locking mechanism is unlocked, and the backrest rotating forwards can drive the pushing member to move towards the armrest to unlock the armrest locking mechanism.

2. The seat back and armrest linkage foldable seat as claimed in claim 1, wherein: the lower end of the backrest is provided with a left backrest pivoting seat and a right backrest pivoting seat; the handrail seat comprises a first fixing seat, a left second fixing seat, a right second fixing seat, two backrest pin-joint seats, two handrail seat pins, two first fixing seats, two second fixing seats, two handrail seat pins, two handrail seat.

3. A seat with a backrest and armrests capable of being folded in linkage according to claim 2, wherein: the backrest locking mechanism is arranged between the backrest pivoting seat and the first fixing seat, and the armrest locking mechanism is arranged between the armrest and the second fixing seat.

4. A seat with a backrest and armrests capable of being folded in linkage according to claim 2 or 3, wherein: the armrest locking mechanism comprises a first tooth groove and a second tooth groove which are respectively arranged on the opposite sides of the armrest and the second fixed seat, a first gear which can be relatively arranged between the first tooth groove and the second tooth groove in a left-right moving mode, and a first spring which is arranged between the first gear and the bottom wall of the first tooth groove, under the action of the first spring, the first gear is simultaneously meshed with the first tooth groove and the second tooth groove, and the armrest locking mechanism is in a locking state.

5. The seat back and armrest linked folding seat as claimed in claim 4, wherein: the pushing piece comprises a main body and one or more pushing parts extending from one side of the main body towards the handrail; an accommodating cavity is formed in one side, away from the second tooth groove, of the second fixed seat, and a main body of the pushing piece is arranged between the accommodating cavity and the backrest pivoting seat in a left-right moving mode; a partition board is arranged between the second tooth groove and the containing cavity, one or more through holes are correspondingly formed in the partition board, when the backrest rotates, the pushing piece is driven to move towards the handrail, and the pushing portion penetrates through the through holes to push the first gear to move towards the first tooth groove.

6. A seat with a backrest and armrests capable of being folded in linkage according to claim 1, 2 or 3, wherein: the back rest pivoting seat is provided with a first driving inclined plane and a first driven inclined plane which correspond to the pushing piece on the opposite sides.

7. The seat back and armrest linked folding seat as claimed in claim 6, wherein: the back-rest pivoting seat and the pushing piece are provided with corresponding bosses and grooves on opposite sides respectively, the bosses are inserted into the corresponding grooves, the bosses are provided with first driving inclined planes, and the side walls or the bottom walls of the grooves are provided with first driven inclined planes.

8. The seat back and armrest linkage foldable seat as claimed in claim 5, wherein: the back rest pivoting seat is provided with a first driving inclined plane and a first driven inclined plane which correspond to the pushing piece on the opposite sides.

9. The seat back and armrest foldable in linkage according to claim 8, wherein: the back-rest pivoting seat and the pushing piece are provided with corresponding bosses and grooves on opposite sides respectively, the bosses are inserted into the corresponding grooves, the bosses are provided with first driving inclined planes, and the side walls or the bottom walls of the grooves are provided with first driven inclined planes.

10. A seat with a backrest and armrests which can be folded in conjunction with each other according to claim 9, wherein: the first driven inclined plane is arranged on one side, facing the backrest pivoting seat, of the main body.

11. A seat with a backrest and armrests capable of folding in linkage according to claim 1, 2, 3, 5, 7, 8, 9 or 10, wherein: the backrest locking mechanism comprises a third tooth groove and a fourth tooth groove which are respectively arranged on the opposite sides of the backrest pivoting seat and the first fixed seat, a second gear which can be relatively arranged between the third tooth groove and the fourth tooth groove in a left-right moving mode, and a second spring which is arranged between the second gear and the bottom wall of the fourth tooth groove, under the action of the second spring, the second gear is simultaneously meshed with the third tooth groove and the fourth tooth groove, and the backrest locking mechanism is in a locking state.

12. A stroller, characterized in that: a seat comprising the backrest and armrest foldable in combination as claimed in any one of claims 1 to 11.