CN115027547B

CN115027547B - Child cart

Info

Publication number: CN115027547B
Application number: CN202210578831.1A
Authority: CN
Inventors: 刘伟; 李光耀
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2023-10-31
Anticipated expiration: 2042-05-25
Also published as: CN115027547A

Abstract

The invention discloses a child stroller. The device comprises a bearing piece arranged on a frame and an X-shaped frame arranged between the bearing piece and a seat, wherein the X-shaped frame comprises a first supporting rod and a second supporting rod which are mutually hinged, the upper end part of one of the first supporting rod and the second supporting rod is rotationally connected with the seat and slidingly connected with the seat along the front-back direction, and the upper end part of the other one of the first supporting rod and the second supporting rod is rotationally connected with the seat or the upper end parts of the first supporting rod and the second supporting rod are respectively rotationally connected with the seat and slidingly connected with the seat along the front-back direction; the lower ends of the first support rod and the second support rod are respectively connected with the bearing piece in a rotating way and in a sliding way along the front-back direction; it further includes a first locking mechanism for locking a distance between an upper end portion of the first support bar and an upper end portion of the second support bar, and a second locking mechanism for locking relative positions of lower end portions of the two support bars of the X-shaped frame with respect to the carrier in the front-rear direction. The child stroller of the present invention is capable of adjusting the seat height and the fore-aft position of the seat relative to the frame.

Description

Child cart

Technical Field

The invention relates to a child stroller.

Background

The children's shallow provides very big convenience for the adult carries less children to carry out outdoor activities, therefore children's shallow gradually becomes the adult and carries children and go out the needs of activity. Most of the children's carts on the market do not have the height adjusting function of the seat relative to the ground and the front-back adjusting function relative to the frame, cannot adapt to dining tables and chairs with different heights, cannot allow children to enjoy sceneries with different heights, cannot observe touch things in a shorter distance, and is inconvenient for the children to adapt to and know the surrounding world.

Disclosure of Invention

The invention aims to provide a child stroller capable of adjusting the height of a seat and the front-back position of the seat relative to a frame.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the baby stroller comprises a frame, wherein the frame comprises a push handle, a front support, a front wheel assembly, a rear support, a rear wheel assembly, a bearing piece, an X-shaped frame and a seat, the front wheel assembly and the rear support are arranged at the bottom of the front support, the rear wheel assembly is arranged at the bottom of the rear support, the bearing piece is arranged on the frame and extends along the front and rear direction, the X-shaped frame is arranged on the bearing piece in a sliding manner along the front and rear direction, and the seat is arranged above the X-shaped frame; the X-shaped frame comprises a first supporting rod and a second supporting rod which are hinged with each other, wherein the upper end part of one of the first supporting rod and the second supporting rod can rotate relative to the seat and is connected to the seat in a sliding way along the front-back direction, and the upper end part of the other one of the first supporting rod and the second supporting rod is connected with the seat in a rotating way, or the upper end parts of the first supporting rod and the second supporting rod can respectively rotate relative to the seat and are connected to the seat in a sliding way along the front-back direction; the lower end parts of the first support rod and the second support rod can rotate relative to the bearing piece respectively and are connected to the bearing piece in a sliding manner along the front-back direction; the baby stroller further comprises a first locking mechanism, wherein the first locking mechanism is used for locking the distance between the upper end part of the first supporting rod and the upper end part of the second supporting rod, and when the first locking mechanism is in a locking state, the relative position between the first supporting rod and the second supporting rod is locked; when the first locking mechanism is in an unlocking state, the first supporting rod and the second supporting rod can relatively rotate around the hinge joint of the first supporting rod and the second supporting rod; the child stroller further comprises a second locking mechanism, wherein the second locking mechanism is used for locking the relative positions of the lower ends of the two support rods of the X-shaped frame relative to the bearing piece in the front-rear direction, when the second locking mechanism is in a locking state, the relative positions of the lower ends of the two support rods of the X-shaped frame relative to the bearing piece in the front-rear direction are locked, and when the second locking mechanism is in an unlocking state, the lower ends of the two support rods of the X-shaped frame can slide relative to the bearing piece in the front-rear direction.

Preferably, the first locking mechanism is disposed between the seat and the first support rod, or between the seat and the second support rod, or between the first support rod and the second support rod.

Preferably, the second locking mechanism is disposed between the carrier and the first support rod, or between the carrier and the second support rod.

According to some embodiments, the first locking mechanism comprises a rack provided on the seat and having a plurality of teeth distributed in the front-rear direction and a locking tooth block rotatably provided at an upper end portion of the first support bar or the second support bar, and when the first locking mechanism is in a locked state, the locking tooth block is inserted into one of the teeth of the rack; when the first locking mechanism is in an unlocking state, the locking tooth block is separated from the teeth in the rack.

Further, the first locking mechanism further includes an elastic member for urging the locking tooth block into the teeth.

Further, the first locking mechanism further comprises a first unlocking mechanism for driving the locking tooth block away from the teeth.

In the embodiment, if the seat needs to be heightened, the seat is directly pulled upwards or lifted, the locking tooth block slides on the rack relative to the rack, the distance between the upper ends of the two support rods of the X-shaped frame is reduced, the X-shaped frame is gradually folded, and the height of the seat is increased; when the lock is unlocked, the locking tooth block slides on the rack along the opposite direction relative to the rack under the action of self gravity or artificial external force of the seat, so that the distance between the upper ends of the two support rods of the X-shaped frame is increased, the X-shaped frame is gradually unfolded, and the seat height is lowered. By the cooperation of the racks and the teeth, the seat height fine adjustment can be realized.

According to some embodiments, the first locking mechanism comprises a screw rod extending along the front-rear direction and a nut sleeved on the screw rod, the nut can rotate relative to the screw rod and is connected to the screw rod in a sliding manner along the front-rear direction, one of the first supporting rod and the second supporting rod is connected with the screw rod, and the other is connected with the nut.

Further, one of the first support rod and the second support rod is provided with a fixing seat, the fixing seat is fixedly connected with the screw rod, the other one of the first support rod and the second support rod is provided with a nut seat, and the nut is rotatably arranged on the nut seat.

Under the embodiment, when the nut is rotated towards one direction, the distance between the upper end part of the first support rod and the upper end part of the second support rod can be reduced under the drive of the screw rod, the X-shaped frame is gradually folded, and the seat height is increased; when the nut is rotated in the opposite direction, the distance between the upper end part of the first support rod and the upper end part of the second support rod can be increased under the drive of the screw rod, the X-shaped frame is gradually unfolded, and the seat height is lowered; and stopping rotating the nut to obtain a locking state. Through the threaded connection relation between the nut and the screw rod, the seat height fine adjustment can be realized.

According to some embodiments, the second locking mechanism comprises a plurality of locking holes arranged on the bearing piece and distributed along the front-rear direction, and a locking piece arranged at the lower end part of the first supporting rod or the second supporting rod, when the second locking mechanism is in a locking position, the locking piece is inserted into the locking hole, when the second locking mechanism is in an unlocking position, the locking piece is separated from the locking hole, and the front-rear fine adjustment of the seat is realized by arranging the plurality of locking holes.

According to some embodiments, the seat is provided with a first rail extending along a front-rear direction, the upper end of the first support rod is rotatably provided with a first slider, the first slider is movably mounted in the first rail and can slide along the front-rear direction of the first rail, the upper end of the second support rod is hinged with the seat, the bearing part is provided with a second rail extending along the front-rear direction, the lower end of the first support rod is rotatably provided with a second slider, the lower end of the second support rod is rotatably provided with a third slider, and the second slider and the third slider are movably mounted in the second rail respectively and can slide along the front-rear direction of the second rail. The arrangement of the sliding block and the track is simple, stable and smooth.

According to some embodiments, the first locking mechanism is disposed between the first rail and the first slider, and the second locking mechanism is disposed between the second rail and the second slider or the third slider.

Preferably, the second track is a T-shaped groove, so that the stability is better.

Preferably, the number of the X-shaped frames is 2, the X-shaped frames are respectively arranged at the left side and the right side of the frame, and the two X-shaped frames are connected through a transverse connecting rod.

Further, the horizontal connecting rod include the first horizontal connecting rod and the second horizontal connecting rod that extend along left and right directions, the lower tip of the first bracing piece of X type frame that is located left and right sides respectively with first horizontal connecting rod be connected, the lower tip of the second bracing piece of X type frame that is located left and right sides respectively with the second horizontal connecting rod be connected, can improve stability, and be convenient for separate setting first locking mechanical system and second locking mechanical system, avoid each other's interference.

Further, the screw rod is connected with one of the first transverse connecting rod and the second transverse connecting rod, and the nut is connected with the other of the first transverse connecting rod and the second transverse connecting rod.

According to some embodiments, the locking hole is disposed on the second rail, and the locking member is disposed on the first transverse link or the second transverse link.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the child stroller provided by the invention can realize seat height adjustment and front-back adjustment, and is simple in structure and convenient to operate.

Drawings

FIG. 1 is a front view of the stroller of example 1 (with the seat in a lowermost and final position relative to the frame);

FIG. 2 is a front view of the stroller of FIG. 1 (shown at section A as a section along a section line);

FIG. 3 is a front view of the stroller of FIG. 1 (section along another section line shown at section A);

FIG. 4 is a front view of the stroller of FIG. 1 (with the seat in a highest and final position relative to the frame, shown in section at part A);

FIG. 5 is a front view of the stroller of FIG. 1 (with the seat in a lowermost and forward-most position relative to the frame, shown in section at part A);

FIG. 6 is a partial (X-frame and carrier) perspective view of the stroller of FIG. 1;

FIG. 7 is a partial (carrier) perspective view of the stroller of FIG. 1;

FIG. 8 is a partial (seat and X-frame) perspective view of the stroller of FIG. 1;

FIG. 9 is an enlarged partial cross-sectional view of FIG. 8 at B;

FIG. 10 is a partial (seat) perspective view of the stroller of FIG. 1;

FIG. 11 is a partial cross-sectional view of the second locking mechanism of the child stroller of embodiments 1 and 2 in a locked state;

FIG. 12 is a partial cross-sectional view of the second locking mechanism of the child stroller of embodiments 1 and 2 in an unlocked state;

FIG. 13 is a partial (seat and X-frame) perspective view of the stroller of example 2;

FIG. 14 is a partial (X-frame and carrier) perspective view of the stroller of example 2;

FIG. 15 is an enlarged partial cross-sectional view of FIG. 14 at C;

figure 16 is an enlarged partial cross-sectional view of figure 14 at D,

in the above-mentioned figures of the drawing,

1. a frame; 11. a front bracket; 12. a front wheel assembly; 13. a rear bracket; 14. a rear wheel assembly; 15. a pushing handle;

2. a carrier; 21. a second track;

3. an X-shaped frame; 31. a first support bar; 32. a second support bar; 33. a first slider; 34. a second slider; 35. a third slider;

4. a seat; 41. a first track;

5. a first locking mechanism; 51. locking the tooth block; 52. a rack; 53. a first return spring;

6. a second locking mechanism; 61. a locking pin; 62. a lock hole; 63. a slide base; 64. a second return spring; 65. a fixing member; 66. unlocking the shifting block;

71. a first transverse link; 72. a second transverse link;

81. a screw rod; 82. a nut; 83. a fixing seat; 84. and a nut seat.

Detailed Description

The invention is further described below with reference to examples. The present invention is not limited to the following examples. The implementation conditions adopted in the embodiments can be further adjusted according to different requirements of specific use, and the implementation conditions which are not noted are conventional conditions in the industry. The technical features of the various embodiments of the present invention may be combined with each other as long as they do not collide with each other.

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the direction or positional relationship observed by a child when the child is in a forward pushing state and the child is seated normally on the child's cart, and that the person pushing the cart is located behind the child's cart merely for convenience in describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 12, the present embodiment provides a preferred embodiment of a stroller capable of fine-tuning a seat 4 up and down and back and forth. The child stroller comprises a frame 1, a carrier 2, an X-frame 3, a seat 4, a first locking mechanism 5 for locking the height of the seat 4 and a second locking mechanism 6 for locking the front-to-back position of the seat 4 on the carrier 2.

As shown in fig. 1 to 5, the frame 1 includes a front bracket 11, a front wheel assembly 12 provided at the bottom of the front bracket 11, a rear bracket 13, a rear wheel assembly 14 provided at the bottom of the rear bracket 13, and a push handle 15 connected to the rear bracket 13. The carrier 2 extends in the front-rear direction of the cart, the front part of the carrier 2 is connected with the front bracket 11, the rear part is connected with the push handle 15, and the carrier 2 is also connected with the rear bracket 13. In the present embodiment, the front portion of the seat 4 is provided with a first rail 41 extending in the front-rear direction, and the first rail 41 is a chute. As shown in fig. 6 and 7, the left and right sides of the frame 1 are respectively provided with a bearing member 2, each bearing member 2 is respectively provided with a second rail 21, and the second rails 21 extend in the front-rear direction, so that the X-shaped frame 3 can slide in the front-rear direction, and in this embodiment, the second rails 21 are T-shaped grooves with openings facing the center of the stroller. As shown in fig. 1 to 6, the X-shaped frame 3 includes a first support bar 31 and a second support bar 32 hinged to each other by a pivot, an upper end portion of the first support bar 31 is pivotally connected to a first slider 33, the first slider 33 is located in a first rail 41 provided at a front portion of the base, the first rail 41 extends in a front-rear direction to restrict the first slider 33 from sliding in the front-rear direction of the frame 1, a lower end portion of the first support bar 31 is pivotally connected to a second slider 34, the second slider 34 is provided in a second rail 21 on the same side and is slidably engaged with a T-shaped groove in the front-rear direction, an upper end portion of the second support bar 32 is pivotally connected to a rear portion of the seat 4, a lower end portion of the second support bar 32 is pivotally connected to a third slider 35, and the third slider 35 is provided in the second rail 21 on the same side and is engaged with the T-shaped groove on the same side and is slidably moved in the front-rear direction. In this embodiment, as shown in fig. 6, the X-shaped frames 3 are respectively disposed on the left and right sides of the frame 1, the second sliders 34 disposed on the two sides are connected by the first transverse links 71 extending in the left and right directions, and the third sliders 35 disposed on the two sides are connected by the second transverse links 72 extending in the left and right directions, so that the structure of the cart is more stable and the left and right linkage can be realized.

The first locking mechanism 5 is used for locking the distance between the upper end part of the first supporting rod 31 and the upper end part of the second supporting rod 32, when the first locking mechanism 5 is in a locking state, the relative position between the first supporting rod 31 and the second supporting rod 32 is locked, and the height of the seat 4 is locked; when the first locking mechanism 5 is in the unlocked state, the first support bar 31 and the second support bar 32 can relatively rotate around the hinge portions thereof, and the seat 4 is raised or lowered in height. The first locking mechanism 5 may be provided at any position capable of locking the relative movement of the first support bar 31 and the second support bar 32, preferably between the seat 4 and the first support bar 31 or the second support bar 32, or between the first support bar 31 and the second support bar 32.

In the present embodiment, the first locking mechanism 5 is provided between the seat 4 and the first support bar 31. Specifically, as shown in fig. 1 to 5 and fig. 8 to 10, the first lock mechanism 5 is provided between the first rail 41 and the first slider 33. In this embodiment, the first locking mechanism 5 includes a locking tooth block 51 provided on the first slider 33 and pivotally connected to the first slider 33, and a rack 52 provided in the first rail 41, the rack 52 having a plurality of teeth distributed in the front-rear direction, the locking tooth block 51 being capable of locking the position of the first slider 33 on the first rail 41 in cooperation with any one of the teeth, and thereby locking the relative position between the first support bar 31 and the second support bar 32. In this embodiment, a cavity communicating with the outside is provided in the first slider 33, an opening of the cavity faces the rack 52, the locking tooth block 51 is provided in the cavity and can rotate, and when the first locking mechanism 5 is in a locked state, the locking tooth block 51 is inserted into one tooth in the rack 52; when the first locking mechanism 5 is in the unlocked state, the locking tooth block 51 is disengaged from the teeth in the rack 52. The first locking mechanism 5 is further provided with a first elastic member for tending to insert the locking tooth block 51 into the tooth, in this embodiment a first return spring 53 provided in the cavity of the first slider 33. The first slider 33 is further provided with an unlocking mechanism capable of rotating the locking tooth block 51 to leave the teeth, and the unlocking mechanism comprises an unlocking part slidably arranged outside the first slider 33, and the first locking mechanism 5 can be driven to unlock by pushing the unlocking part downwards. Preferably, as shown in fig. 6, the first locking mechanisms 5 are symmetrically disposed on both sides of the frame 1.

The second locking mechanism 6 is used for locking the relative positions of the lower ends of the two support rods of the X-shaped frame 3 relative to the carrier 2 in the front-rear direction, when the second locking mechanism 6 is in a locked state, the relative positions of the lower ends of the two support rods of the X-shaped frame 3 relative to the carrier 2 in the front-rear direction are locked, and when the second locking mechanism 6 is in an unlocked state, the lower ends of the two support rods of the X-shaped frame 3 can slide relative to the carrier 2 in the front-rear direction. The second locking mechanism 6 is arranged between the carrier 2 and the first support bar 31 and/or the second support bar 32.

The second locking mechanism 6 includes a plurality of locking holes 62 provided on the carrier 2 and distributed in the front-rear direction, locking pieces provided at the lower end portions of the first support bar 31 or the second support bar 32, the locking pieces being inserted into the locking holes 62 when the second locking mechanism 6 is in the locked position, and the locking pieces being disengaged from the locking holes 62 when the second locking mechanism 6 is in the unlocked position. The second locking mechanism 6 is preferably provided between the carrier 2 and the lower end of the first support bar 31. Specifically, as shown in fig. 6, 7, 12, and 13, the second locking mechanism 6 includes a plurality of lock holes 62 provided at the rear of the carrier 2 uniformly distributed in the front-rear direction, a locking member provided between the second slider 34 and the first cross link 71, and a second elastic member for driving the locking member to be intended to be inserted into the lock holes 62, and an unlocking assembly. In this embodiment, for the sake of simplicity and convenience in operation of the stroller, the first transverse link 71 is provided with a cavity with two open ends, the second slider 34 is provided with a through hole, the T-shaped slot and the second slider 34 are communicated with the cavity of the first transverse link 71, the second locking mechanism 6 is disposed in the through hole of the second slider 34 and the cavity of the first transverse link 71, specifically, the second locking mechanism 6 includes a lock pin 61 disposed in the cavity and capable of sliding relative to the cavity, a sliding base 63 fixedly connected with one end of the lock pin 61 far away from the cavity outlet, a fixing member 65 disposed in the middle of the cavity and a second elastic member disposed between the sliding base 63 and the fixing member 65, and an unlocking pulling block 66 capable of driving the sliding base 63 to move in a direction approaching to the fixing member 65 is disposed outside the first transverse link 71. In this embodiment, the second elastic member is a second return spring 64, which has a tendency to move the lock pin 61 away from the fixing member 65, so as to drive the end of the lock pin 61 to extend from the second slider 34 and insert into the lock hole 62 in the T-shaped slot. Preferably, as shown in fig. 6, the second locking mechanisms 6 are respectively arranged at two sides of the frame 1, and when the vehicle is unlocked, the unlocking shifting blocks 66 are respectively shifted towards the center direction of the first transverse connecting rod 71, so that the second sliding blocks 34 at two ends and the bearing piece 2 are unlocked, and meanwhile, the unlocking shifting blocks 66 are pushed and pulled along the front-back direction, so that the installation distance between the two unlocking shifting blocks 66 is controlled, and one-hand operation is facilitated.

The adjustment process of the seat 4 of the child stroller provided in this embodiment is as follows:

the up-and-down adjustment is achieved by the cooperation of the locking tooth block 51 with the teeth on the rack 52. When the seat 4 needs to be adjusted upwards, the seat 4 is pulled upwards, the first sliding block 33 slides backwards relative to the first guide rail 41, the distance between the upper end part of the first supporting rod 31 and the upper end part of the second supporting rod 32 is shortened, the distance between the upper end part of the first supporting rod 31 and the lower end part of the second supporting rod 32 is prolonged, the seat 4 is lifted, and when the seat 4 reaches a required position, the locking tooth block 51 is matched with teeth on the rack 52 under the action of the first return spring 53 to limit the sliding of the first sliding block 33, so that the seat 4 is prevented from sliding downwards; when the seat 4 needs to be adjusted downwards, the unlocking part is pushed downwards to drive the locking tooth block 51 to be separated from the teeth on the seat 4, at the moment, under the action of the gravity of the seat 4 or the downward external force applied by people, the distance between the upper end part of the first support rod 31 and the upper end part of the second support rod 32 is prolonged, the distance between the upper end part of the first support rod 31 and the lower end part of the second support rod 32 is shortened, the seat 4 descends, when the required position is reached, the unlocking part is stopped being pushed downwards, and the locking tooth block 51 is matched with the teeth on the rack 52 under the action of the first return spring 53 to limit the sliding of the first sliding block, so that the seat 4 is prevented from continuing to slide downwards.

The fore-and-aft adjustment is achieved by the cooperation of the locking pin 61 with locking holes 62 in different positions in the carrier 2. When front and back adjustment is needed, the unlocking shifting block 66 is pressed inwards by two hands, so that the lock pin 61 is separated from the lock hole 62, at the moment, the front and back adjustment of the seat can be realized by pushing and pulling the unlocking shifting block 66, the unlocking shifting block 66 is released at a proper position, the lock pin 61 enters the lock hole 62 under the action of the second reset spring 64, and the front and back adjustment is completed.

Example 2

This embodiment provides another preferred implementation of a stroller that allows for fine tuning of the seat 4 up and down and back and forth. The arrangement of this embodiment is basically the same as that of embodiment 1, except for the first locking mechanism 5. As shown in fig. 13 to 16, the first locking mechanism 5 includes a screw rod 81 extending in the front-rear direction and a nut 82 fitted over the screw rod 81, the nut 82 is rotatably connected to the screw rod 81 in the front-rear direction so as to be slidable with respect to the screw rod 81, a nut seat 84 is provided on the first transverse link 71, the nut 82 is rotatably mounted on the nut seat 84, a fixing seat 83 is provided on the second transverse link 72, and the fixing seat 83 is fixedly connected to the front portion of the screw rod 81.

The height adjustment process of the seat 4 of the child stroller provided in this embodiment is as follows:

by rotating the nut 82 clockwise or counterclockwise to adjust the height of the seat 4, in example 2, the right-handed screw 81 is used, when the adjusting nut 82 is rotated clockwise, the distance between the upper end portion of the first support rod 31 and the upper end portion of the second support rod 32 is shortened, the distance between the upper end portion of the first support rod 31 and the lower end portion of the second support rod 32 is extended, the seat 4 is lifted, and conversely when the adjusting nut 82 is rotated counterclockwise, the distance between the upper end portion of the first support rod 31 and the upper end portion of the second support rod 32 is extended, the distance between the upper end portion of the first support rod 31 and the lower end portion of the second support rod 32 is shortened, and the seat 4 is lowered.

The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A children's barrow comprises a frame, wherein the frame comprises a push handle, a front bracket, a front wheel assembly arranged at the bottom of the front bracket, a rear bracket and a rear wheel assembly arranged at the bottom of the rear bracket,

the child stroller is characterized by further comprising a bearing piece arranged on the frame and extending along the front-back direction, an X-shaped frame arranged on the bearing piece in a sliding manner along the front-back direction, and a seat arranged above the X-shaped frame;

the X-shaped frame comprises a first supporting rod and a second supporting rod which are hinged with each other, wherein the upper end part of one of the first supporting rod and the second supporting rod can rotate relative to the seat and is connected to the seat in a sliding way along the front-back direction, and the upper end part of the other one of the first supporting rod and the second supporting rod is connected with the seat in a rotating way, or the upper end parts of the first supporting rod and the second supporting rod can respectively rotate relative to the seat and are connected to the seat in a sliding way along the front-back direction; the lower end parts of the first support rod and the second support rod can rotate relative to the bearing piece respectively and are connected to the bearing piece in a sliding manner along the front-back direction;

the baby stroller further comprises a first locking mechanism, wherein the first locking mechanism is used for locking the distance between the upper end part of the first supporting rod and the upper end part of the second supporting rod, and when the first locking mechanism is in a locking state, the relative position between the first supporting rod and the second supporting rod is locked; when the first locking mechanism is in an unlocking state, the first supporting rod and the second supporting rod can relatively rotate around the hinge joint of the first supporting rod and the second supporting rod;

the child stroller further comprises a second locking mechanism, wherein the second locking mechanism is used for locking the relative positions of the lower ends of the two support rods of the X-shaped frame relative to the bearing piece in the front-rear direction, when the second locking mechanism is in a locking state, the relative positions of the lower ends of the two support rods of the X-shaped frame relative to the bearing piece in the front-rear direction are locked, and when the second locking mechanism is in an unlocking state, the lower ends of the two support rods of the X-shaped frame can slide relative to the bearing piece in the front-rear direction.

2. The stroller of claim 1, wherein the stroller comprises a frame,

the second locking mechanism is arranged between the bearing piece and the first supporting rod or between the bearing piece and the second supporting rod.

3. The stroller of claim 1, wherein the first locking mechanism is disposed between the seat and the first support bar or between the seat and the second support bar.

4. A stroller according to claim 3, wherein the first locking mechanism comprises a rack provided on the seat and having a plurality of teeth distributed in a front-rear direction and a locking tooth block rotatably provided at an upper end portion of the first support bar or the second support bar, and the locking tooth block is inserted into one of the teeth when the first locking mechanism is in a locked state; when the first locking mechanism is in an unlocking state, the locking tooth block is separated from the teeth in the rack,

the first locking mechanism further includes an elastic member for urging the locking tooth block into the tooth.

5. The stroller of claim 1, wherein the first locking mechanism is disposed between the first support bar and the second support bar.

6. The stroller of claim 5, wherein the first locking mechanism comprises a screw rod extending in a front-rear direction and a nut sleeved on the screw rod, the nut being rotatably connected to the screw rod in the front-rear direction and slidably connected to the screw rod, one of the first support rod and the second support rod being connected to the screw rod, the other one being connected to the nut.

7. The stroller of claim 2, wherein the second locking mechanism comprises a plurality of locking holes formed in the carrier and distributed in a front-rear direction, and a locking member formed at a lower end portion of the first support bar or the second support bar, wherein the locking member is inserted into the locking hole when the second locking mechanism is in the locked position, and the locking member is disengaged from the locking hole when the second locking mechanism is in the unlocked position.

8. The stroller of claim 1, wherein the seat is provided with a first rail extending in a front-rear direction, a first slider is rotatably provided at an upper end of the first support bar, the first slider is movably installed in the first rail and is slidable in the front-rear direction of the first rail, an upper end of the second support bar is hinged with the seat,

the bearing piece on be equipped with along the second track of fore-and-aft direction extension, the lower tip rotation of first bracing piece be provided with the second slider, the lower tip rotation of second bracing piece be provided with the third slider, the second slider with the third slider respectively movably install in the second track and can follow the fore-and-aft direction of second track slide.

9. The stroller of claim 8, wherein the first locking mechanism is disposed between the first rail and the first slider and the second locking mechanism is disposed between the second rail and the second slider or the third slider.

10. The stroller of claim 1, wherein the number of the X-shaped frames is 2, the X-shaped frames are respectively arranged at the left side and the right side of the frame, and the two X-shaped frames are connected through a transverse connecting rod.

11. The stroller of claim 10, wherein the transverse links comprise a first transverse link and a second transverse link extending in a left-right direction, lower ends of first support bars of the X-shaped frames positioned at left and right sides are respectively connected with the first transverse link, and lower ends of second support bars of the X-shaped frames positioned at left and right sides are respectively connected with the second transverse link.

12. The stroller of claim 11, wherein said first locking mechanism comprises a screw rod extending in a front-to-rear direction and a nut sleeved on said screw rod, said nut being rotatably coupled to said screw rod in a front-to-rear direction and slidably coupled to one of said first cross link and said second cross link, said nut being coupled to the other of said first cross link and said second cross link.