CN115503807A

CN115503807A - Children's barrow

Info

Publication number: CN115503807A
Application number: CN202211158351.6A
Authority: CN
Inventors: 战华锋
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2022-12-23
Also published as: WO2024060404A1

Abstract

The invention relates to a children's barrow, comprising a frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly, wherein the frame comprises side brackets respectively positioned at the left side and the right side, and the side brackets comprise: front wheel support, rear wheel support, push away a pole, seat pole, back connecting rod, folding pull rod and first locking device, children's shallow have forward user state and backward user state, after to user state with forward user state in-process that changes, slide along the sliding tray mutually and rotationally connect between folding pull rod upper end and the lower tip that pushes away a pole. The invention aims to provide an improved child stroller, a seat rod cannot move up and down in the process of reversing a push handle rod, the use experience of a child is improved, and the folded child stroller is small in size and concise in folding process.

Description

Children's barrow

Technical Field

The invention belongs to the technical field of children products, and particularly relates to a child stroller.

Background

The child stroller plays an important role in carrying infants to go out in daily life, and becomes one of indispensable children products in the growth process of children. Most of the children's shallow among the prior art can commutate and fold, however, present children's shallow drives seat pole arch up easily pushing away handlebar switching-over in-process, influences children's the experience of taking, and the children's shallow volume after folding is great, folding process is comparatively single and loaded down with trivial details.

Disclosure of Invention

The invention aims to provide an improved baby stroller, wherein a seat rod cannot move up and down in the process of reversing a push handle rod, so that the use experience of a child is improved, and the folded baby stroller is small in size and concise in folding process.

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

the utility model provides a children's shallow, is including frame, front wheel subassembly, the rear wheel subassembly that has expansion state and fold condition, the frame including the collateral branch frame that is located the left and right sides respectively, the collateral branch frame include under expansion state:

the front wheel bracket is arranged at the lower part of the front wheel bracket;

the rear wheel bracket is arranged at the lower part of the rear wheel bracket;

the lower end part of the push handle rod is coaxially and pivotally connected with the upper end part of the front wheel bracket and the upper end part of the rear wheel bracket through a central rotating shaft, the lower end part of the push handle rod below the central rotating shaft is provided with a sliding groove, and the sliding groove is provided with an end part far away from the central rotating shaft and an end part close to the central rotating shaft;

the seat rod is used for connecting a seat for children to sit, the front end part of the seat rod is in pivot rotation connection with the front wheel bracket through a front wheel bracket rotating shaft, and the front wheel bracket rotating shaft is positioned below the central rotating shaft;

the front end part of the rear connecting rod is pivotally connected with the seat rod through a rear connecting rod front rotating shaft, the rear connecting rod front rotating shaft is positioned at the rear part of the front wheel support rotating shaft, the rear end part of the rear connecting rod is pivotally connected with the rear wheel support through a rear wheel support rotating shaft, and the rear wheel support rotating shaft is positioned below the central rotating shaft;

the lower end part of the folding pull rod is in pivot connection with the seat rod or/and the rear connecting rod through a lower folding pull rod rotating shaft, the upper end part of the folding pull rod is provided with a guide post, the guide post is inserted into the sliding groove, and the guide post is positioned at the lower part of the central rotating shaft;

a first locking device, which has a locking operation state and an unlocking operation state, wherein in the locking operation state, the push handle rod is prohibited from rotating relative to the front wheel bracket or/and the rear wheel bracket, and in the unlocking operation state, the push handle rod is permitted to rotate relative to the front wheel bracket or/and the rear wheel bracket;

the child stroller is provided with a forward using state and a backward using state, and when the first locking device is in an unlocking working state, the push handle rod rotates forwards or backwards relative to the front wheel bracket and the rear wheel bracket, so that the child stroller is changed between the backward using state and the forward using state; in the process of changing the backward use state and the forward use state, the upper end part of the folding pull rod and the lower end part of the push handle rod are connected in a sliding and rotating way along the sliding groove; in the backward use state and when the first locking device is in the unlocking working state, the frame is allowed to be converted from the unfolding state to the folding state; in the forward use state and when the first locking device is in the unlocking working state, the frame is allowed to be converted from the unfolding state to the folding state.

Preferably, the lower rotating shaft of the folding pull rod and the front rotating shaft of the rear connecting rod are the same common rotating shaft with the same shaft axis coincidence, and the lower end part of the folding pull rod is in pivot connection with the front end part of the rear connecting rod and the seat rod through the same shaft axis of the common rotating shaft.

Preferably, the length direction of the sliding groove extends along the radial direction of the central rotating shaft.

Preferably, the upper end of the rear wheel bracket is provided with a partial circular arc guide groove, and the partial circular arc guide groove is arranged around the central rotating shaft.

Furthermore, two ends of the partial arc-shaped guide groove are respectively an inlet end of the front guide groove and an inlet end of the rear guide groove; in the forward use state, the guide post is positioned at the inlet end of the front guide groove, the guide post does not slide in the sliding groove in the forward use state and the frame is converted from the unfolding state to the folding state, and the guide post enters the partial arc-shaped guide groove from the inlet end of the front guide groove and slides along the partial arc-shaped guide groove; when the rear direction use state is carried out, the guide post is positioned at the inlet end of the rear guide groove, the guide post does not slide in the sliding groove when the rear direction use state is carried out and the frame is converted from the unfolding state to the folding state, and the guide post enters the partial arc-shaped guide groove from the inlet end of the rear guide groove and slides along the partial arc-shaped guide groove.

Furthermore, the upper end part of the rear wheel bracket between the inlet end of the front guide groove and the inlet end of the rear guide groove is provided with a notch, and the notch is used for enabling the guide post to move in the notch in the process that the child stroller is changed between the backward use state and the forward use state.

Preferably, the first locking means comprises:

the spring bolt is arranged in an inner cavity at the lower part of the push handle rod in a sliding manner along the length direction of the push handle rod, an elastic part is arranged between the spring bolt and the push handle rod, and the elastic part is abutted against the spring bolt;

the child stroller comprises a front wheel support, a rear wheel support, a front locking hole, a first locking device and a second locking device, wherein the front locking hole is formed in the upper end of the front wheel support or the upper end of the rear wheel support, the hole opening direction of the front locking hole is the radial direction of the central rotating shaft, and when the child stroller is in the forward use state, the lock tongue is inserted into the front locking hole, and the first locking device is in a locking working state;

the child stroller comprises a front wheel support, a rear wheel, a first locking device and a second locking device, wherein the front wheel support is provided with a front locking hole, the rear wheel support is provided with a rear locking hole, the rear locking hole is provided with a hole in the radial direction of the central rotating shaft, and the first locking device is in a locking working state;

the spring piece exerts an elastic force on the spring bolt, so that the spring bolt has a tendency of tending to be inserted into the forward locking hole or the backward locking hole.

Preferably, the side stand still include the second locking device, the second locking device set up in the front wheel support with the rear wheel support between, the second locking device have locking operating condition and unblock operating condition, under locking operating condition, the frame be locked in the development condition, under first locking device and second locking device are all in unblock operating condition, allow the child's shallow at backward user state under from development condition to folded state conversion, also allow the child's shallow under forward user state from development condition to folded state conversion.

Preferably, a cross connecting rod is connected between the two side brackets.

A folding method of a child stroller is characterized in that when a first locking device and a second locking device are both in an unlocking working state, the child stroller can be operated to be converted from an unfolding state to a folding state under the backward using state or the forward using state.

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

according to the stroller disclosed by the invention, the guide columns are additionally arranged on the upper parts of the folding pull rods, the seat rods cannot move up and down in the reversing process of the push rods, the use experience of children is improved, the stroller can be folded in a forward use state and a reverse use state, the folding process is simple, and the folded stroller is small in size and convenient to carry.

Drawings

FIG. 1 is a perspective view of a stroller in a forward use position according to an embodiment of the present invention;

FIG. 2 is a side view of the stroller of an embodiment of the present invention in a forward use position;

FIG. 3 isbase:Sub>A schematic cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a top view of the stroller of the present invention in a forward use position;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is a side view of a stroller of an embodiment of the present invention between a forward use position and a rearward use position;

FIG. 7 is a schematic cross-sectional view taken along the direction C-C in FIG. 6;

fig. 8 is a top view of the stroller between a forward use position and a rearward use position according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view taken along the direction D-D in FIG. 8;

FIG. 10 is a side view of the stroller in a rearward use position according to the embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view taken along line E-E of FIG. 10;

fig. 12 is a top view of the stroller in a rearward use position according to the embodiment of the present invention;

FIG. 13 is a schematic sectional view taken along the direction F-F in FIG. 12;

FIG. 14 is a side view of the stroller in a semi-collapsed position with the push handle bar in a forward use position in accordance with an embodiment of the present invention;

FIG. 15 is a top view of the stroller in a semi-collapsed configuration with the push handle bar in a forward use configuration in accordance with the embodiment of the present invention;

FIG. 16 is a schematic sectional view taken along the direction G-G in FIG. 15;

FIG. 17 is a side view of the stroller in a semi-collapsed position with the push handle bar in a reverse use position according to the embodiment of the present invention;

FIG. 18 is a top view of the stroller of the present invention in a semi-collapsed position, wherein the push handle bar is in a reverse use position;

FIG. 19 is a schematic sectional view taken along the direction H-H in FIG. 18;

FIG. 20 is a side view of the stroller in a folded position with the push bar in a forward use position according to the embodiment of the present invention;

FIG. 21 is a top view of the stroller in a folded position with the push bar in a forward use position in accordance with an embodiment of the present invention;

FIG. 22 is a schematic sectional view taken along line I-I of FIG. 21;

FIG. 23 is a side view of the stroller in a collapsed position with the push bar in a reverse use position according to an embodiment of the present invention;

FIG. 24 is a top view of the stroller in a collapsed position with the push bar in a reverse use position according to the embodiment of the present invention;

FIG. 25 is a schematic sectional view taken along the direction J-J in FIG. 24;

fig. 26 is a cross-sectional view of a first locking mechanism of the stroller in accordance with the embodiment of the present invention, wherein the push handle bar is in a forward use position;

FIG. 27 is an enlarged partial schematic view taken at A of FIG. 26;

fig. 28 is a cross-sectional view of a first locking mechanism of the stroller in accordance with the embodiment of the present invention, wherein the push handle bar is in a reverse use position;

FIG. 29 is an enlarged partial view taken at B in FIG. 28;

fig. 30 is a cross-sectional view of a second locking device of the stroller according to the embodiment of the present invention;

FIG. 31 is a cross-sectional view taken along K-K of FIG. 30, wherein the second locking device is in a locked condition;

FIG. 32 is a cross-sectional view taken along K-K of FIG. 30, with the second locking device in an unlocked position;

wherein, 1, the frame; 11. a side bracket; 111. a front wheel support; 1111. a front wheel support spindle; 112. a rear wheel support; 1121. A rear wheel support shaft; 113. a handle pushing rod; 1131. a central rotating shaft; 1132. a sliding groove; 11321. a first end portion; 11322. a second end portion; 114. a seat post; 115. a rear connecting rod; 1151. a rear connecting rod front rotating shaft; 116. folding the pull rod; 1161. a lower rotating shaft of the folding pull rod; 1162. a guide post; 117. a first locking device; 1171. a latch bolt; 1172. an elastic member; 1173. a rearward locking hole; 1174. a forward locking hole; 1175. a latch bolt driving member; 118. a partial circular arc-shaped guide groove; 1181. an inlet end of the front guide groove; 1182. the inlet end of the rear guide groove; 1183. a notch; 1184. a limiting block; 119. a second locking device; 1191. an intermediate gear; 1192. a first tooth slot; 1193. a second tooth slot; 2. a front wheel assembly; 3. a rear wheel assembly; 4. a transverse connecting rod.

Detailed Description

The present invention will be further described with reference to the following examples. However, 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 not mentioned are conventional conditions in the industry. The technical features of the embodiments of the present invention may be combined with each other as long as they do not conflict with each other.

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

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

In embodiments of the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. To simplify the disclosure of embodiments of the invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit embodiments of the invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

In the description of the present invention, the directions of "front", "rear", "left", "right", "up", "down", etc. referred to are defined with reference to the directions viewed when a child is seated, and as shown in fig. 2, the left direction in the drawing is "front", the right direction in the drawing is "back", the upper direction in the drawing is "up", the lower direction in the drawing is "down", and the direction perpendicular to the paper plane in the drawing is the left-right direction, the above-mentioned directions are defined only for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 32, the stroller of the present embodiment includes a frame 1 having an unfolded state and a folded state, a front wheel assembly 2 and a rear wheel assembly 3, wherein the frame 1 includes side brackets 11 respectively located at left and right sides, and a cross link 4 is connected between the two side brackets 11.

The specific structure of the stroller and the connection relationship of the components are described in detail as follows:

in the present embodiment, as shown in fig. 1 to 13, the side stand 11 includes a front wheel bracket 111, a rear wheel bracket 112, a push handle bar 113, a seat bar 114, a rear link 115, and a folding link 116 in an unfolded state. Wherein, the front wheel assembly 2 is arranged at the lower part of the front wheel bracket 111, and the rear wheel assembly 3 is arranged at the lower part of the rear wheel bracket 112; the lower end of the push lever 113 is coaxially pivoted to the upper end of the front wheel bracket 111 and the upper end of the rear wheel bracket 112 via a center shaft 1131. As shown in fig. 2 and 6, the lower end of the push handle bar 113 has a portion located below the central rotating shaft 1131, and the portion of the push handle bar 113 is provided with a sliding groove 1132, and the sliding groove 1132 has a first end 11321 far away from the central rotating shaft 1131 and a second end 11322 close to the central rotating shaft 1131. The seat bar 114 is connected to a seat on which a child sits, a front end of the seat bar 114 is pivotally connected to the front wheel frame 111 via a front wheel frame pivot 1111, and the front wheel frame pivot 1111 is located below the center pivot 1131. The front end of rear link 115 is pivotally connected to seat bar 114 via rear link front pivot 1151, rear link front pivot 1151 is located at the rear of front wheel frame pivot 1111, the rear end of rear link 115 is pivotally connected to rear wheel frame 112 via rear wheel frame pivot 1121, and rear wheel frame pivot 1121 is located below center pivot 1131. The lower end of the folding pull rod 116 is pivotally connected with the seat rod 114 and the rear connecting rod 115 through a folding pull rod lower rotating shaft 1161, the folding pull rod lower rotating shaft 1161 and the rear connecting rod front rotating shaft 1151 are the same common rotating shaft with the same shaft axis coincided, and the lower end of the folding pull rod 116 is pivotally connected with the front end of the rear connecting rod 115 and the seat rod 114 through the same shaft axis of the common rotating shaft (namely the rotating shaft 1151 or 1161); in other embodiments, the lower end of the fold-out lever 116 may be pivotally connected to either the seat post 114 or the rear link 115. The upper end of the folding bar 116 is provided with a guide post 1162, the guide post 1162 is inserted into the sliding slot 1132, and the guide post 1162 is located at the lower part of the central rotating shaft 1131. The sliding groove 1132 has a length direction extending in a radial direction of the central rotating shaft 1131.

The side bracket 11 further includes a first locking device 117, as shown in fig. 26 to 29, the first locking device 117 specifically includes a locking tongue 1171, an elastic member 1172, a backward locking hole 1173, a forward locking hole 1174 and a locking tongue driving member 1175, the first locking device 117 has a locking operation state in which the rotation of the push handle bar 113 with respect to the front wheel bracket 111 or the rear wheel bracket 112 is prohibited, and an unlocking operation state in which the rotation of the push handle bar 113 with respect to the front wheel bracket 111 and the rear wheel bracket 112 is prohibited, and in other embodiments, the rotation of the push handle bar 113 with respect to both the front wheel bracket 111 and the rear wheel bracket 112 is prohibited; in the unlocked operating state, the push handle bar 113 is allowed to rotate relatively with respect to the front wheel bracket 111 or the rear wheel bracket 112, and in other embodiments, the push handle bar 113 is allowed to rotate relatively with respect to both the front wheel bracket 111 and the rear wheel bracket 112.

The children's cart has a forward using state and a backward using state, and when the first locking device 117 is in the unlocking working state, the push handle rod 113 rotates forwards or backwards relative to the front wheel bracket 111 and the rear wheel bracket 112, so that the children's cart is changed between the backward using state and the forward using state; during the transformation between the backward use state and the forward use state, the upper end portion of the folding pull rod 116 and the lower end portion of the push handle rod 113 are slidably and rotatably connected along the sliding groove 1132, and specifically, the guide post 1162 slides in the sliding groove 132; in the backward use state and when the first locking means 117 is in the unlocked operation state, the frame 1 is allowed to be converted from the unfolded state to the folded state; in the forward use state and when the first locking means 117 is in the unlocked operative state, the frame 1 is allowed to transition from the unfolded state to the folded state.

Specifically, the locking tongue 1171 is slidably disposed in an inner cavity of the lower portion of the handle bar 113 along the length direction of the handle bar 113, an elastic member 1172 is disposed between the locking tongue 1171 and the handle bar 113, and the elastic member 1172 abuts against the locking tongue 1171; a forward locking hole 1174 is formed in the upper end portion of the front wheel support 111 or the upper end portion of the rear wheel support 112, the opening direction of the forward locking hole 1174 is a radial direction of the central rotating shaft 1131, when the child stroller is in a forward use state, as shown in fig. 26 and 27, the lock tongue 1171 is inserted into the forward locking hole 1174, and the first locking device 117 is in a locking operation state; when the child stroller is in a rear use state, as shown in fig. 28 and 29, the locking tongue 1171 is inserted into the rear locking hole 1173, and the first locking device 117 is in a locking operation state; the locking bolt driving member 1175 is connected to the locking bolt 1171, and when the locking bolt driving member 1175 pulls the locking bolt 1171 to be disengaged from the forward locking hole 1174 or the backward locking hole 1173, the first locking device 117 is in the unlocking operation state, and the elastic member 1172 applies an elastic force to the locking bolt 1171, so that the locking bolt 1171 has a tendency to be inserted into the forward locking hole 1174 or the backward locking hole 1173.

The upper end of the rear wheel bracket 112 is provided with a partial circular arc guide groove 118, the partial circular arc guide groove 118 is arranged around the central rotating shaft 1131, and two ends of the partial circular arc guide groove 118 are respectively a front guide groove inlet end 1181 and a rear guide groove inlet end 1182; as shown in fig. 2 to 5, in the forward use state, the guide post 1162 is located at the inlet end 1181 of the front guide slot and at the first end 11321 of the sliding slot 132, as shown in fig. 10 to 13, and in the backward use state, the guide post 1162 is located at the inlet end 1182 of the rear guide slot and at the first end 11321 of the sliding slot 132; the upper end of the rear wheel bracket 112 between the front guide slot entrance end 1181 and the rear guide slot entrance end 1182 is provided with a notch 1183, the notch 1183 is used for the children's stroller to change between the backward use state and the forward use state, the guide post 1162 is limited by the limit block 1184 to move in the notch 1183, and at this time, the guide post 1162 is located at the second end 11322 of the sliding slot 132.

The side stand 11 further includes a second locking device 119, the second locking device 119 being provided between the front wheel bracket 111 and the rear wheel bracket 112, the second locking device 119 having a locking operation state in which the frame 1 is locked in the deployed state and an unlocking operation state in which both the first locking device 117 and the second locking device 119 are in the unlocking operation state, allowing the stroller to be converted from the deployed state to the folded state in the backward use state and also allowing the stroller to be converted from the deployed state to the folded state in the forward use state. Specifically, as shown in fig. 30 to 32, the second locking device specifically includes an intermediate gear 1191, a first toothed groove 1192, and a second toothed groove 1193, and the second locking device 119 has a locking working state and an unlocking working state; as shown in fig. 31, in the locking operation state, the frame 1 is locked in the unfolded state, and the intermediate gear 1191 is inserted into the first and

second teeth grooves

1192 and 1193, respectively, so that the intermediate gear 1191 is simultaneously engaged with the first and

second teeth grooves

1192 and 1193; as shown in fig. 32, in the unlocked operation state, the intermediate gear 1191 is disengaged from one of the teeth grooves and is inserted into only the other tooth groove, so that the intermediate gear 1191 is engaged with only one of the first and

second teeth grooves

1192 and 1193.

When the stroller in this embodiment is in the unfolded state, as shown in fig. 1 to 5, when the stroller is in the forward use state, the extending directions of the push handle 113 and the front wheel bracket 111 are substantially the same, and the stroller can be moved forward by pushing the push handle 113 forward. As shown in fig. 10 to 13, when the stroller is in the rear use state, the extending directions of the push rod 113 and the rear wheel bracket 112 are substantially the same.

When the stroller is converted from the unfolded state to the folded state, as shown in fig. 14 to 19, the push handle 113 is turned downward around the central rotating shaft 1131, the folding pull rod 116 tends to move upward, and the front wheel support 111 and the rear wheel support 112 are gradually folded relatively. As shown in fig. 14 to 16, in the forward use state and during the transition of the frame 1 from the unfolded state to the folded state, the guide post 1162 is located at the first end 11321 of the sliding groove 1132 and does not slide in the sliding groove 1132, and the guide post 1162 enters the partial circular arc-shaped guide groove 118 from the front guide groove inlet end 1181 and slides along the partial circular arc-shaped guide groove 118; as shown in fig. 17 to 19, in the rear use state and during the transition of the frame 1 from the unfolded state to the folded state, the guide post 1162 is located at the first end 11321 of the sliding groove 1132 and does not slide in the sliding groove 1132, and the guide post 1162 enters the partial circular arc-shaped guide groove 118 from the rear guide groove inlet end 1182 and slides along the partial circular arc-shaped guide groove 118.

When the stroller is folded, as shown in fig. 20 to 25, the extending directions of the push handle bar 113, the front wheel bracket 111 and the rear wheel bracket 112 are substantially the same, the upper end portion of the push handle bar 113, the lower end portion of the front wheel bracket 111 and the lower end portion of the rear wheel bracket 112 are close to each other, and the front wheel assembly 2 and the rear wheel assembly 3 are overlapped in the left-right direction, so that the stroller has a minimum volume and is convenient to transport and carry.

In conclusion, the child stroller disclosed by the invention has the advantages that the guide columns are additionally arranged on the upper parts of the folding pull rods, the seat rods cannot move up and down in the reversing process of the push handle rods, the use experience of children is improved, the child stroller can be folded in a forward use state and a reverse use state, the folding process is simple, and the folded child stroller is small in size and convenient to carry.

The above embodiments are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention by this means. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a children's shallow, is including frame, front wheel subassembly, the rear wheel subassembly that has expansion state and fold condition, the frame including the collateral branch frame that is located the left and right sides respectively, its characterized in that: the side stent comprises in a deployment state:

the rear wheel bracket is arranged at the lower part of the rear wheel bracket;

the seat rod is used for connecting a seat for children to sit, the front end part of the seat rod is pivotally connected with the front wheel bracket through a front wheel bracket rotating shaft, and the front wheel bracket rotating shaft is positioned below the central rotating shaft;

the lower end part of the folding pull rod is in pivot rotation connection with the seat rod or/and the rear connecting rod through a lower rotating shaft of the folding pull rod, the upper end part of the folding pull rod is provided with a guide post, the guide post is inserted into the sliding groove, and the guide post is positioned at the lower part of the central rotating shaft;

a first locking device having a locking operation state in which the push handle lever is prohibited from rotating with respect to the front wheel bracket and/or the rear wheel bracket and an unlocking operation state in which the push handle lever is permitted to rotate with respect to the front wheel bracket and/or the rear wheel bracket;

2. The stroller as claimed in claim 1, wherein the lower pivot of the folding bar and the front pivot of the rear link are a common pivot having a same axis, and the lower end of the folding bar is pivotally connected to the front end of the rear link and the seat bar via the common pivot.

3. The stroller of claim 1, wherein said slot extends lengthwise along a radial direction of said central pivot axis.

4. The stroller as recited in claim 1, wherein the rear wheel frame has a partial circular guide slot formed in an upper end thereof, the partial circular guide slot being disposed around the central pivot axis.

5. The stroller of claim 4, wherein the two ends of the partial circular arc-shaped guide slot are respectively an inlet end of the front guide slot and an inlet end of the rear guide slot; when the front use state is carried out, the guide post is positioned at the inlet end of the front guide groove, and when the front use state is carried out and the frame is converted from the unfolding state to the folding state, the guide post does not slide in the sliding groove, and enters the partial circular arc-shaped guide groove from the inlet end of the front guide groove and slides along the partial circular arc-shaped guide groove; when the rear direction use state is carried out, the guide post is positioned at the inlet end of the rear guide groove, the guide post does not slide in the sliding groove when the rear direction use state is carried out and the frame is converted from the unfolding state to the folding state, and the guide post enters the partial arc-shaped guide groove from the inlet end of the rear guide groove and slides along the partial arc-shaped guide groove.

6. The stroller as recited in claim 4, wherein said upper end of said rear wheel support between said front and rear guide slot entrance ends has a notch therein for allowing said guide post to move therein during transition of said stroller between said rearward and forward use positions.

7. The stroller of claim 1, wherein said first locking means comprises:

the child stroller comprises a front wheel support, a rear wheel support, a first locking device and a second locking device, wherein the front wheel support is provided with a front locking hole, the rear wheel support is provided with a rear locking hole, the front locking hole is arranged at the upper end of the front wheel support or the upper end of the rear wheel support, the hole opening direction of the rear locking hole is the radial direction of the central rotating shaft, and when the child stroller is in a rear use state, the spring bolt is inserted into the rear locking hole, and the first locking device is in a locking working state;

the spring bolt driving piece is connected to the spring bolt, when the spring bolt driving piece pulls the spring bolt to be separated from the forward locking hole or the backward locking hole, the first locking device is in an unlocking working state, and the elastic piece exerts an elastic force on the spring bolt, so that the spring bolt has a tendency of tending to be inserted into the forward locking hole or the backward locking hole.

8. The stroller of claim 1, wherein said side frame further comprises a second locking means disposed between said front wheel frame and said rear wheel frame, said second locking means having a locked operative position wherein said frame is locked in said deployed position and an unlocked operative position wherein said first locking means and said second locking means are both unlocked operative positions permitting said stroller to be converted from said deployed position to said collapsed position in said rearward operative position and permitting said stroller to be converted from said deployed position to said collapsed position in said forward operative position.

9. The stroller as recited in claim 1, wherein a cross-link is connected between said side frames.

10. A method of collapsing a stroller according to claims 1-9, wherein said stroller is operable to transition from said collapsed position to said expanded position in either said rearward or forward use positions with said first and second locking means in said unlocked operative positions.