CN217374627U - Backrest, child seat with backrest and baby carriage - Google Patents

Abstract

The utility model discloses a lean against, be equipped with this children's seat and perambulator that lean against, it includes backrest plate, adjustment piece to lean against, run through and down open-ended installation space around being provided with on the backrest plate, adjustment piece swing joint in the backrest plate, just the adjustment piece can block installation space and dodge move about between the installation space. The backrest is arranged in such a way that when the baby carriage is in an unfolded use state, the adjusting piece can be adjusted to the position for blocking the installation space, so that the comfort level of the seat backrest in use is not influenced due to the fact that a cavity is formed in the corresponding position of the backrest plate; when the baby carriage is to be folded, the adjusting piece can be opened again to the installation space, so that a space is provided for the driver to rotate by a larger angle, and the utility model discloses the volume that the baby carriage is folded is smaller.

Description

Backrest, child seat with backrest and baby carriage

Technical Field

The utility model relates to an infant product field especially relates to one kind and leans against, is equipped with this children's seat and perambulator that lean against.

Background

The stroller generally includes a foldable frame and a seat disposed on the frame, and the seat generally includes a sitting portion connected to the frame or disposed on the frame and a backrest having a lower side pivotally connected to the sitting portion, so that when the stroller is folded, the frame can be folded, and the backrest of the seat can rotate relative to the sitting portion and approach the sitting portion to fold the seat.

Some seats lean against including platelike main part, set up to the back-up board promptly, and the driver of frame is located the rear side that leans against, when the perambulator is received, the seat is rotatory and is close to with the portion of taking toward the below in the front, the driver is also rotatory and is close to with other subassemblies of frame toward the below in the front, because the existence of back-up board, thereby when the driver is rotatory to certain angle, it can contact with the back-up board, and just the part of the original lower extreme of back-up board of the foremost contact (the back-up board is received completely to close, the part of original lower extreme is located the rear side relatively), thereby when leaning against can not relative the portion of taking rotatory back again, the driver also can not continue to rotate toward the below in the front. Therefore, the included angle between the handle and other components of the baby carriage is still large, namely the whole volume of the folded baby carriage is still large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming, provide a back, be equipped with this children's seat and perambulator that lean against.

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

the utility model provides a backrest, its can be used to children's seat, the backrest includes the backrest plate, the backrest still includes the adjusting part, run through and down open-ended installation space around being provided with on the backrest plate, adjusting part swing joint in the backrest plate, just the adjusting part can block installation space and let out move between the installation space.

The adjusting piece is pivoted to the backrest plate at the upper side, or one of the left side and the right side of the adjusting piece is pivoted to the backrest plate, so that the adjusting piece can rotate in the front-back direction relative to the backrest plate. The upper side of the adjusting piece is rotatably connected between the upper sides of the left side wall and the right side wall of the installation space around a transverse rotating shaft, so that the adjusting piece can rotate around the transverse rotating shaft in the front-back direction relative to the backrest plate; or the upper side of the adjusting piece is pivoted with the part of the front side of the backrest plate above the installation space in a door hinge mode.

The side wall of the mounting space corresponding to the side is convexly provided with a pivoting part, one side of the adjusting piece can be rotatably connected between the corresponding side of the side wall of the mounting space and the pivoting part around a second rotating shaft, and the extending direction of the second rotating shaft is the same as the extending direction of the side wall of the corresponding side of the mounting space; or one of the left side and the right side of the adjusting piece is pivoted with the part of the front side of the backrest plate, which is positioned at the corresponding side of the installation space, in a door hinge mode.

The adjusting piece is arranged to rotate to a first position relative to the backrest plate, and in the first position, the adjusting piece is located between the left side wall and the right side wall of the installation space and can block the installation space; preferably, when the backrest plate is in the first position relative to the adjusting member, the front surface of the adjusting member does not protrude from the front side of the front surface of the surrounding backrest plate; preferably, when the backrest plate is located at the first position relative to the adjusting member, the front surface of the adjusting member and the front surfaces of the surrounding backrest plates are located on the same plane.

A limiting mechanism is arranged between the backrest plate and the adjusting piece, and the limiting mechanism is set to be in a first position, and the adjusting piece cannot rotate backwards relative to the backrest plate under the limitation of the limiting mechanism.

The limiting mechanism comprises a limiting piece arranged on the back plate, and when the back plate and the adjusting piece are relatively positioned at a first position, the adjusting piece is abutted against the limiting piece and cannot rotate backwards relative to the back plate; preferably, when the backrest plate and the adjusting member are located at the first position relatively, the rear end of the adjusting member abuts against the limiting member.

The installation space is provided with the limiting pieces extending from the left side wall and the right side wall to opposite sides respectively, and gaps in the left-right direction exist on opposite sides of the limiting pieces on the left side wall and the right side wall of the installation space; or, the installation space extends from one of the left and right side walls to the opposite side to form the limiting member, and a gap exists between one end of the limiting member facing the other side wall and the other side edge in the left-right direction; or, the back plate extends from the back walls at the left and right sides of the installation space to opposite sides respectively to form the limiting pieces, and gaps exist between the opposite sides of the left and right limiting pieces in the left and right direction; or, the backrest plate extends from one of the rear walls located at the left side and the right side of the installation space to the opposite side to form the limiting member, and a gap in the left-right direction exists between one end of the limiting member facing the rear wall at the other side and the rear wall at the other side.

An elastic resetting piece is arranged between the adjusting piece and the backrest plate, and the elastic resetting piece can drive the adjusting piece to move to a position blocking the installation space relative to the backrest plate.

The installation space is arranged in the middle of the backrest in the left-right direction.

A child seat comprising the backrest.

The child seat further comprises a sitting portion, the lower side of the backrest is pivoted with the sitting portion, and a downward inclined recess is formed in the rear side of the sitting portion.

A stroller comprising the child seat.

The baby carriage also comprises a foldable bracket and a driver with one lower side pivoted on the bracket, the child seat is also connected on the bracket, the backrest of the child seat can rotate in the same direction with the driver, and the position of the installation space corresponds to the driver; preferably, the support comprises a front foot, a seat supporting piece, a linkage piece and a rear foot, the lower side of the rider is pivoted to the front foot, the rear side of the seat supporting piece is pivoted to the rider, the front side of the seat supporting piece is pivoted to the upper side of the linkage piece, the lower side of the linkage piece is pivoted to the front foot, and the rider, the front foot, the seat supporting piece and the linkage piece form a four-bar linkage structure; the seating portion of the child seat is connected to the child seat support, or the seat support of the support is configured as the seating portion of the child seat.

The utility model has the advantages that:

the backrest of the utility model is arranged in such a way that when the baby carriage is in an unfolded use state, the adjusting piece can be adjusted to a position blocking the installation space, thereby not influencing the comfort level of the backrest; when the baby carriage is to be folded, the adjusting piece can move relative to the backrest plate to give way to the installation space, so that a space is provided for a driver to rotate by a larger angle, and the baby carriage can be folded in a smaller volume, so that the baby carriage is convenient to carry and store.

Drawings

Fig. 1 is a schematic view of a backrest of the present invention;

FIG. 2 is a schematic view of the adjusting member and the backrest plate of the backrest of the present invention in a relative rotation state;

FIG. 3 is a schematic cross-sectional view taken along the line A- -A in FIG. 2;

FIG. 4 is a schematic view of the utility model with another angle of the backrest;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

fig. 6 is a first schematic view of the backrest of the present invention;

fig. 7 is a schematic view of the backrest of the present invention;

FIG. 8 is a schematic view of the child seat of the present invention;

fig. 9 is a schematic plan view of the stroller of the present invention;

fig. 10 is a perspective view of the stroller of the present invention;

fig. 11 is a schematic perspective view of the adjusting member and the backrest plate being in a first position relative to each other during the folding process of the stroller of the present invention;

FIG. 12 is an enlarged cross-sectional view taken along the line C-C in FIG. 11;

fig. 13 is a perspective view of the fully folded stroller of the present invention;

fig. 14 is an enlarged view of a cross section taken along the direction D-D in fig. 13.

Detailed Description

As shown in fig. 1 to 7, the utility model discloses a lean against 1, lean against 1 includes back-up plate 11, back-up 1 still includes adjusting part 12, run through and down open-ended installation space 111 around being provided with on back-up plate 11, adjusting part 12 swing joint in back-up plate 11, just adjusting part 12 can block installation space 111 with give way activity between the installation space 111.

The adjusting member 12 is pivoted to the backrest plate 11, or one of the left and right sides of the adjusting member 12 is pivoted to the backrest plate 11, so that the adjusting member 12 can rotate in the front-back direction relative to the backrest plate 11, and the purpose that the adjusting member 12 blocks the installation space 111 and lets the installation space 111 rotate is achieved through the rotation in the direction.

The upper side of the adjusting member 12 is rotatably connected between the upper sides of the left and right side walls of the installation space around a transverse rotating shaft 112, so that the adjusting member 12 can rotate around the transverse rotating shaft 112 in the front-back direction relative to the backrest plate 11; or, the upper side of the adjusting member 12 is pivotally connected to the portion of the backrest plate 11 above the installation space 111 by means of a door hinge (not shown). Both of these two ways achieve the purpose that the upper side of the adjusting piece 12 is pivoted to the backrest plate 11.

When the upper side of the installation space 111 is rotatably connected between the left and right side walls around the transverse rotating shaft 112, the rotating shaft 112 extending left and right is arranged between the left and right side walls of the installation space 111, correspondingly, the upper side of the adjusting member 12 is provided with a C-shaped clamping groove 121, and the C-shaped clamping groove 121 can be relatively rotatably sleeved outside the rotating shaft 112; or, a C-shaped clamping groove extending left and right is arranged between two side walls of the installation space 111, and correspondingly, the rotating shaft is arranged on the upper side of the adjusting part 12, and the C-shaped clamping groove is sleeved outside the rotating shaft in a relatively rotatable manner.

In this embodiment, the left and right ends of the rotating shaft 112 are respectively connected to the left and right sidewalls of the installation space 111, that is, a long rotating shaft 112 is provided, and the long rotating shaft 112 extends from one sidewall of the left and right sidewalls of the installation space 111 to the other sidewall. In other embodiments (not shown), the two rotating shafts 112 may extend from the left and right sidewalls of the installation space 111 to opposite sides, respectively, and there may be a gap between the opposite sides of the two rotating shafts 112, that is, two short rotating shafts 112 that are not connected to each other are disposed. Regardless of whether one long rotation shaft 112 or two short rotation shafts 112 are provided, the C-shaped engaging groove 121 on the upper side of the adjusting member 12 may be provided to extend left and right along the upper side of the adjusting member 12.

In another embodiment, the rotating shafts may extend outward from the left and right ends of the upper side of the adjusting member 12, and correspondingly, the left and right side walls of the installation space 111 are provided with fastening holes, and the two rotating shafts 112 may be fastened into the fastening holes of the corresponding sides in a relatively rotatable manner; or, the left and right side walls of the installation space 111 are respectively provided with the rotating shafts 112 protruding toward opposite sides, correspondingly, the left and right ends of the upper side of the adjusting member 12 are respectively provided with a clamping hole, and the two rotating shafts 112 can be respectively clamped into the clamping holes of the corresponding sides in a relatively rotatable manner. In this way, the object of being rotatably connected between the left and right side walls of the installation space 111 about the rotating shaft 112 can be achieved.

When the upper side of the adjusting member 12 is pivotally connected to the portion of the backrest plate 11 above the installation space 111 by means of a door hinge, that is, the adjusting member 12 is a door, and the door can be closed or rotated forward relative to the backrest plate to open the door by means of the door hinge. When the door is closed, the installation space 111 is blocked, and when the door is opened, the installation space 111 is released. After the door is opened, the opened door is rotated backward to a closed state, and the installation space 111 is blocked again. It should be noted that the door is opened partially, or completely, even if the door is opened, i.e. the installation space 111 is allowed to be cleared.

Similarly, one of the left and right sides of the adjusting member 12 is pivotally connected to the backrest plate 11, a pivotal portion (not shown) is protruded from a side wall of the mounting space 111 corresponding to the side wall, the one side of the adjusting member 12 can be rotatably connected between the corresponding side of the upper side wall of the mounting space and the pivotal portion around a second rotating shaft, and the extending direction of the second rotating shaft is the same as the extending direction of the side wall of the corresponding side of the mounting space. That is, if the left side of the adjusting member 12 is pivotally connected to the backrest plate 11, the mounting space 111 is provided with the pivotally connecting portion on the left side wall, and the left side of the adjusting member 12 is pivotally connected between the left side of the upper side wall of the mounting space 111 and the pivotally connecting portion; the same applies to the right. The second rotation shaft can be rotatably connected between the upper sides of the left and right side walls of the installation space around the transverse rotation shaft 112 on the upper side of the adjusting member 12, but the direction of the second rotation shaft is different.

One of the left and right sides of the adjusting member 12 may be pivotally connected to a portion of the backrest plate 11 located at the corresponding side of the installation space 111 by means of a door hinge (not shown). That is, the left side of the adjusting member 12 may be pivotally connected to the portion of the backrest plate 11 located on the left side of the installation space 111 at the front side thereof by means of a door hinge, or the right side of the adjusting member 12 may be pivotally connected to the portion of the backrest plate 11 located on the right side of the installation space 111 at the front side thereof by means of a door hinge. The connection mode is the same as the mode that the upper side of the adjusting piece 12 is pivoted with the part of the backrest plate 11 above the installation space 111 through the door hinge mode, and only the installation position of the door is changed.

The adjusting member 12 is configured to rotate to a first position relative to the backrest plate 11, and in the first position, the adjusting member 12 is located between the left and right sidewalls of the installation space 111, and the adjusting member 12 can block the installation space 111. When the adjusting member 12 is rotated to be positioned between the left and right sidewalls of the installation space 111, the adjusting member 12 blocks the installation space 111; when the adjusting member 12 rotates forward relative to the backrest plate 11, the installation space 111 is opened.

In this embodiment, when the backrest plate 11 is located at the first position relative to the adjusting member 12, the front surface of the adjusting member 12 does not protrude from the front side of the front surface of the surrounding backrest plate 11. That is to say, the utility model discloses lean against 1 can not appear the condition that the front surface protrusion comes one because of adjusting part 12, so, can avoid adjusting part 12 that the protrusion comes to stab the child's of sitting on children's seat back, and then avoid causing the discomfort to the child of sitting on children's seat.

Preferably, when the backrest plate 11 is located at the first position relative to the adjusting member 12, the front surface of the adjusting member 12 is located on the same plane as the front surface of the surrounding backrest plate 11. Thus, the child is more comfortable when sitting on the seat and leaning back on the backrest 1.

It should be understood that the backrest plate 11 is only a plate-shaped whole, but it is not a solid plate in one piece, and there may be other designs that do not interfere with the installation space 111.

In this embodiment, a limiting mechanism is disposed between the backrest plate 11 and the adjusting member 12, and the limiting mechanism is configured to prevent the adjusting member 12 from rotating backward relative to the backrest plate 11 under the limitation of the limiting mechanism when the first position is reached.

The limiting mechanism includes a limiting member 113 disposed on the backrest plate 11, and when the backrest plate 11 and the adjusting member 12 are located at a first position, the adjusting member 12 abuts against the limiting member 113 and cannot rotate backward relative to the backrest plate 11.

In this embodiment, the installation space 111 has the stoppers 113 extending from the left and right sidewalls to opposite sides, respectively, and there is a gap in the left-right direction between the stoppers 113 on the left and right sidewalls of the installation space 111; or, the installation space 111 extends from one of the left and right sidewalls to the opposite side to form the limiting member 113, and a gap exists between one end of the limiting member 113 facing the other sidewall and the other sidewall in the left-right direction; or, the back plate 11 extends the limiting members 113 from the back walls located at the left and right sides of the installation space 111 to the opposite sides, respectively, and there is a gap in the left-right direction between the opposite sides of the two limiting members 113; or, the back plate 11 has the limiting member 113 extending from one of the rear walls located at the left and right sides of the installation space 111 to the opposite side, and a gap exists between one end of the limiting member 113 facing the rear wall at the other side and the rear wall at the other side in the left-right direction.

When the backrest plate 11 and the adjusting member 12 are located at the first position, the rear end of the adjusting member 12 abuts against the limiting member 113, so that the limiting member 113 cannot rotate backward relative to the backrest plate 11.

Preferably, in an embodiment, a groove 1131 is disposed on a front side of the limiting member 113, correspondingly, the limiting portion 122 extends from the rear end surface of the adjusting member 12 to the rear, the limiting portion 122 extends into the groove 1131 at the corresponding position, and the rear end surface of the adjusting member 12 abuts against the front end surface of the limiting member 113.

An elastic resetting piece 13 is arranged between the adjusting piece 12 and the backrest plate 11, and under the condition of no interference of external force, the elastic resetting piece 13 can drive the adjusting piece 12 to rotate to a first position relative to the backrest plate 11. Therefore, the operation is more convenient.

In this embodiment, as shown in fig. 4 and 5, a connecting member 123 is provided at the rear side of the adjusting member 12 in a protruding manner, and the connecting member 123 is provided with a guide hole 1231 penetrating right and left; two hanging pieces 114 are arranged on the backrest plate 11 at intervals, and the two hanging pieces 114 are respectively positioned at the left side and the right side of the connecting piece 123; the elastic reset piece 13 is an elastic ring, one end of the elastic ring is hung on the hanging piece 114 on one side, and the other end of the elastic ring is hung on the hanging piece 114 on the other side after passing through the guide hole 1231 of the connecting piece 123. Therefore, when the adjusting member 12 rotates forward relative to the backrest plate 11, i.e. the middle of the elastic ring is pulled to move forward, and when no external force exists, under the elastic force recovery of the elastic ring 13, the adjusting member 12 rotates backward and resets.

In other embodiments, the elastic restoring member 13 may also be a torsion spring disposed between the upper side of the adjusting member 12 and the backrest plate 11 (not shown).

In other embodiments, the elastic return element may be configured in other known and feasible configurations, so long as the purpose of automatically returning the adjusting element 12 is achieved without interfering with other components.

In the present embodiment, the mounting space 111 is provided in the middle of the backrest 1 in the left-right direction.

As shown in fig. 8, the utility model also discloses a child seat 2, child seat 2 includes lean against 1.

The utility model discloses child seat 2 still includes the portion of taking advantage of 21, lean against 1 downside and the pin joint of the portion of taking advantage of 21 to lean against 1 and the portion of taking 21 relative rotation and be close to each other, thereby receive and close child seat 2.

Preferably, in the present embodiment, a recess 211 is formed at the rear side of the seat 21 and inclines downward. With this arrangement, after the backrest 1 and the sitting portion 21 rotate relatively close to each other, the lower side of the adjusting member 12 (which is located relatively at the rear side after the child seat 2 is folded) rotating toward the sitting portion 21 relative to the backrest plate 11 can extend into the recess 211. So that the adjusting member 12 can rotate to a larger angle toward the side of the sitting portion 21 relative to the backrest plate 11 in the folded state of the seat.

The lower ends of the left and right sides of the backrest plate 11 may extend to form a portion 115 pivotally connected to the seating portion 21, or a fixing member 116 may be connected to the periphery of the backrest plate 11, and the lower ends of the left and right sides of the fixing member 116 are pivotally connected to the seating portion 21 (see fig. 4). The structure of the backrest 1 pivotally connected to the seat 21 can be any known and feasible structure, and is not the invention of the present invention, and therefore, will not be described herein.

As shown in fig. 9 and 10, the present invention also discloses a baby carriage, which comprises the above-mentioned child seat 2.

The utility model discloses perambulator still including the support 3 that can close, a downside pin joint in handlebar hand 4 on the support 3, children's seat 2 also connect in on the support 3, children's seat 2 lean against 1 can with handlebar hand 4 toward same direction rotatory, just installation space 111's position with handlebar hand 4 corresponds. Specifically, if the rider 4 is located at the rear side of the backrest 1, the position of the installation space 111 corresponds to the rider 4, that is, the rider 4 is located right behind the installation space 111. That is, the position of the adjuster 12 in the first position also corresponds to the rider 4, and the rider 4 is located directly behind the adjuster 12 in the first position.

Since the installation space 111 is disposed at the middle position in the left-right direction of the backrest 1 in the present embodiment, correspondingly, the rider 4 is located at the middle position at the rear side of the backrest 1, and the rider 4 is also located at the right rear side of the installation space 111. Thus, when the baby carriage is in the unfolding state, the baby carriage pushed by the hand 4 is in the middle position of the whole baby carriage, so that the stress on the bracket 3 is more balanced, and the baby carriage can travel more safely.

In this embodiment, the frame 3 comprises a front leg 31, a seat support 32, a link 33, and a rear leg 34, the lower side of the rider 4 is pivoted to the front leg 31, the rear side of the seat support 33 is pivoted to the rider 4, the front side is pivoted to the upper side of the link 33, the lower side of the link 33 is pivoted to the front leg 31, and the rider 4, the front leg 31, the seat support 32, and the link 33 are formed into a four-bar linkage structure; the seating portion 21 of the child seat 2 is attached to the child seat support 32, or the seat support 32 of the holder 3 is provided as the seating portion 21 of the child seat. When the seat support 32 of the frame 3 is configured as the sitting portion 21 of the child seat, the lower side of the backrest 1 is pivotally connected to the seat support 32. Similarly, the recess 211 is also disposed at the rear side of the child seat support 32.

The front wheel 310 is arranged at the front lower side of the front foot 31, and the rear wheel 340 is arranged at the rear lower side of the rear foot 34.

When the baby carriage is folded, the backrest 1 can be rotated forwards and downwards, namely the backrest 1 is rotated towards the direction of the sitting part 21 until the backrest 1 can not rotate any more, at the moment, the backrest 1 is relatively close to the sitting part 21, and the child seat is in a folded state; at this time, the handle 4 is rotated forward and downward (the backrest 1 and the handle 4 are both rotated forward and downward, that is, both can be rotated in the same direction), because of the characteristics of the four-bar linkage structure, the child seat support 32 is also pushed to rotate forward and downward, so as to push the link 33 to rotate forward and downward, that is, both rotate toward the front leg 31, the rear leg can also rotate forward relatively to approach the front leg 31, and the folded seat rotates along with the seat support 32.

If according to the setting of traditional back-up plate 11, even child seat 2, each subassembly of support 3 are all closed completely, and child seat 2 can not rotate with each subassembly of support 3 relative again promptly, if do not set up on back-up plate 11 adjusting part 12, just can not continue to rotate when the handlebar hand 4 contacts with back-up plate 11 lower extreme, and at this moment, the contained angle between handlebar hand 4 and the other subassemblies of support is great (as shown in fig. 11, 12), and the whole volume of perambulator here is great still.

Because the utility model discloses the setting of adjusting part 12 on back-up plate 11, when the handlebar 4 is in the state as shown in fig. 11, 12 relatively, handlebar 4 is with adjusting part 12 lower extreme contact to can also continue down rotatory handlebar 4, and the handlebar 4 that continues to rotate can push adjusting part 12 around pivot 112 is rotatory down relatively back-up plate 11, and is rotatory toward the direction of portion of taking a seat 21 promptly, thereby lets open installation space 111, and even be provided with two aforementioned locating parts 113 about on back-up plate 11, also have the clearance in the direction of about between two locating parts 113 about, pivot 112 is also so, this clearance also allows handlebar 4 to rotate and pass, can not interfere the rotation of handlebar 4, until handlebar 4 rotates to be close to relatively with back-up plate 11 and can not rotate again, at this moment, the perambulator closes completely, as shown in fig. 13, 14. At this time, compared with the state shown in fig. 11 and 12, the angle between the rider 4 and the backrest plate 11 is much smaller, that is, the overall volume of the stroller is much smaller, so that the stroller is convenient to store and carry. And the adjusting member 12 is rotatably connected between the left and right sides of the installation space around the rotation shaft at the upper side, so that the adjusting member 12 can be naturally pushed by rotating the rider 4 to a certain angle without additional operation of rotating the adjusting member 12 to leave the installation space 11, thereby being simpler and more convenient to operate.

In other embodiments, when the stroller of the present invention is folded, the handle 4 can also be rotated directly forward and downward, when the handle 4 is rotated to contact with the backrest 1, the handle 4 is rotated forward and downward, i.e. the backrest 1 is naturally pushed to rotate forward and downward together, until the adjustment member 12 is continuously pushed to rotate around the shaft 111 relative backrest plate 11, so as to also realize that the child seat 2, the bracket 3 and the handle 4 are completely folded as described above.

In other embodiments, the bracket 3 may be configured in any other known and feasible structure as long as the rider 4 is configured as described above relative to the backrest 1.

The backrest 1 of the utility model is such that when the baby carriage is in the unfolding use state, the adjusting part 12 can be adjusted to the position blocking the installation space 111, so that the comfort level of the seat backrest 1 can not be affected due to the fact that a cavity is formed at the corresponding position of the backrest plate; when the stroller is to be folded, the adjusting member 12 can be retracted from the installation space 11 to provide a space for the rider 4 to rotate by a larger angle, so that the stroller can be folded in a smaller size, and is convenient to carry and store.

In the above orientation description, with reference to fig. 10, the front wheel 310 is located at the front, the rear wheel 340 is located at the rear, the rider 4 is located at the upper position, the front wheel 310 and the rear wheel 340 are located at the rear, and the two sides of the backrest 1 are left and right. It should be understood that the orientation descriptions are for ease of description and understanding only and are not intended to limit the position thereof, and that the relative orientations change correspondingly upon visual change of observation.

Claims (31)

1. A backrest for a child seat, the backrest comprising a backrest plate, the backrest characterized in that: the backrest also comprises an adjusting piece, wherein the backrest plate is provided with a mounting space which is penetrated from front to back and is opened downwards, the adjusting piece is movably connected with the backrest plate, and the adjusting piece can block the mounting space and give way the mounting space to move between the mounting spaces.

2. The backrest according to claim 1, wherein: the adjusting piece is pivoted to the backrest plate at the upper side, or one of the left side and the right side of the adjusting piece is pivoted to the backrest plate, so that the adjusting piece can rotate in the front-back direction relative to the backrest plate.

3. The backrest according to claim 2, wherein: the upper side of the adjusting piece is rotatably connected between the upper sides of the left side wall and the right side wall of the installation space around a transverse rotating shaft, so that the adjusting piece can rotate around the transverse rotating shaft in the front-back direction relative to the backrest plate; or the upper side of the adjusting piece is pivoted with the part of the front side of the backrest plate above the installation space in a door hinge mode.

4. The backrest according to claim 2, wherein: the side wall of the mounting space corresponding to the side is convexly provided with a pivoting part, one side of the adjusting piece can be rotatably connected between the corresponding side of the side wall of the mounting space and the pivoting part around a second rotating shaft, and the extending direction of the second rotating shaft is the same as the extending direction of the side wall of the corresponding side of the mounting space; or one of the left side and the right side of the adjusting piece is pivoted with the part of the front side of the backrest plate, which is positioned at the corresponding side of the installation space, in a door hinge mode.

5. The backrest according to claim 2, 3 or 4, wherein: the adjusting piece is arranged to rotate to a first position relative to the backrest plate, and when the adjusting piece is located at the first position, the adjusting piece is located between the left side wall and the right side wall of the installation space, and the adjusting piece can block the installation space.

6. The backrest according to claim 5, wherein: when the backrest plate is in a first position relative to the adjusting piece, the front surface of the adjusting piece does not protrude out of the front side of the front surface of the surrounding backrest plate.

7. The backrest according to claim 6, wherein: when the backrest plate is in a first position relative to the adjusting member, the front surface of the adjusting member and the front surfaces of the surrounding backrest plates are in the same plane.

8. The backrest according to claim 5, wherein: be provided with stop gear between back plate and the adjustment piece, just stop gear is set up to, during the primary importance under stop gear's restriction, the adjustment piece is rotatory backward relative back plate.

9. The backrest of claim 8, wherein: the limiting mechanism comprises a limiting part arranged on the back plate, and when the back plate and the adjusting part are relatively positioned at a first position, the adjusting part and the limiting part abut against each other and cannot rotate backwards relative to the back plate.

10. The backrest according to claim 9, wherein: when the backrest plate and the adjusting piece are relatively positioned at the first position, the rear end of the adjusting piece abuts against the limiting piece.

11. The backrest according to claim 9 or 10, wherein: the installation space is provided with the limiting pieces extending from the left side wall and the right side wall to opposite sides respectively, and gaps in the left-right direction exist on opposite sides of the limiting pieces on the left side wall and the right side wall of the installation space; or, the installation space is provided with the limiting piece extending from one of the left side wall and the right side wall to the opposite side, and a gap in the left-right direction exists between one end of the limiting piece facing the other side wall and the other side edge; or, the back plate extends from the back walls at the left and right sides of the installation space to opposite sides respectively to form the limiting pieces, and gaps exist between the opposite sides of the left and right limiting pieces in the left and right direction; or, the backrest plate extends from one of the rear walls located at the left side and the right side of the installation space to the opposite side to form the limiting member, and a gap in the left-right direction exists between one end of the limiting member facing the rear wall at the other side and the rear wall at the other side.

12. The backrest according to claim 6 or 7, wherein: a limiting mechanism is arranged between the backrest plate and the adjusting piece, and the limiting mechanism is set to be in a first position, and the adjusting piece cannot rotate backwards relative to the backrest plate under the limitation of the limiting mechanism.

13. The backrest according to claim 12, wherein: the limiting mechanism comprises a limiting part arranged on the backrest plate, and when the backrest plate and the adjusting part are relatively located at a first position, the adjusting part abuts against the limiting part and cannot rotate backwards relative to the backrest plate.

14. The backrest of claim 13, wherein: when the backrest plate and the adjusting piece are relatively positioned at the first position, the rear end of the adjusting piece abuts against the limiting piece.

15. The backrest according to claim 13 or 14, wherein: the installation space is provided with the limiting pieces extending from the left side wall and the right side wall to the opposite sides respectively, and gaps in the left-right direction exist on the opposite sides of the limiting pieces on the left side wall and the right side wall of the installation space; or, the installation space extends from one of the left and right side walls to the opposite side to form the limiting member, and a gap exists between one end of the limiting member facing the other side wall and the other side edge in the left-right direction; or, the back plate extends from the back walls at the left and right sides of the installation space to opposite sides respectively to form the limiting pieces, and gaps exist between the opposite sides of the left and right limiting pieces in the left and right direction; or, the back plate extends from one of the back walls located at the left and right sides of the installation space to the opposite side to form the limiting member, and a gap exists between one end of the limiting member facing the back wall at the other side and the back wall at the other side in the left-right direction.

16. The backrest according to any one of claims 1 to 4, 6 to 10, and 13 to 14, wherein: an elastic resetting piece is arranged between the adjusting piece and the backrest plate, and the elastic resetting piece can drive the adjusting piece to move to a position blocking the installation space relative to the backrest plate.

17. The backrest according to claim 5, wherein: be provided with the elasticity piece that resets between adjusting part and the backrest plate, the elasticity piece that resets can order about the relative backrest plate of adjusting part and remove to blocking installation space's position.

18. The backrest according to claim 11, wherein: be provided with the elasticity piece that resets between adjusting part and the backrest plate, the elasticity piece that resets can order about the relative backrest plate of adjusting part and remove to blocking installation space's position.

19. The backrest according to claim 12, wherein: be provided with the elasticity piece that resets between adjusting part and the backrest plate, the elasticity piece that resets can order about the relative backrest plate of adjusting part and remove to blocking installation space's position.

20. The backrest according to claim 15, wherein: an elastic resetting piece is arranged between the adjusting piece and the backrest plate, and the elastic resetting piece can drive the adjusting piece to move to a position blocking the installation space relative to the backrest plate.

21. The backrest according to any one of claims 1 to 4, 6 to 10, 13 to 14, 17 to 20, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

22. The backrest according to claim 5, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

23. The backrest according to claim 11, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

24. The backrest according to claim 12, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

25. The backrest according to claim 15, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

26. The backrest of claim 16, wherein: the installation space is arranged in the middle of the backrest in the left-right direction.

27. A child seat, characterized by: comprising a backrest as claimed in any one of claims 1 to 26.

28. The child seat of claim 27, wherein: the seat back is characterized by further comprising a sitting portion, the lower side of the backrest is pivoted with the sitting portion, and a downward inclined recess is formed in the rear side of the sitting portion.

29. A stroller, characterized in that: the stroller comprising a child seat according to claim 27 or 28.

30. The stroller of claim 29, wherein: the child seat is connected to the support, the backrest of the child seat can rotate along the same direction with the driver, and the position of the installation space corresponds to the driver.

31. The stroller of claim 30, wherein: the support comprises a front foot, a seat supporting piece, a linkage piece and a rear foot, the lower side of the driver is pivoted to the front foot, the rear side of the seat supporting piece is pivoted to the driver, the front side of the seat supporting piece is pivoted to the upper side of the linkage piece, the lower side of the linkage piece is pivoted to the front foot, and the driver, the front foot, the seat supporting piece and the linkage piece form a four-bar structure; the seating portion of the child seat is connected to the child seat support, or the seat support of the support is configured as the seating portion of the child seat.

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