CN218172369U - Children's barrow - Google Patents

Abstract

The utility model relates to a children's shallow, it includes frame, front wheel subassembly, rear wheel subassembly, seat pocket subassembly, locking mechanical system. The seat pocket assembly comprises a seat part, a backrest part and a pedal part, wherein the seat part can be rotatably arranged relative to the frame, the backrest part is rotatably connected with the rear part of the seat part, and the pedal part is rotatably connected with the front part of the seat part; the child cart further comprises a first unlocking driving device for controlling the first locking device to unlock, and a second unlocking driving device for controlling the second locking device to unlock. The child stroller provides a new locking and unlocking mode, and the folding operation of the child stroller is simplified.

Description

Children's barrow

Technical Field

The utility model relates to a children's shallow.

Background

In the prior art, the stroller is generally provided in a foldable form for convenient carrying, transportation and storage. Foldable stroller are mainly realized by providing a stroller frame having an open state and a folded state. In order to realize the folding function, the main components of the frame of the stroller, such as the front wheel bracket, the rear wheel bracket, the cushion rod, the push handle rod and the like, are mutually connected in a rotating way, and the specific structural design is diversified. However, different structural designs have important influences on the shape of the frame, the stability of the frame, the convenience of folding operation, the volume and storage after folding and the cost of the cart. On the premise of ensuring the stability of the frame, the design of the child stroller which has novel shape, small folding volume, convenient storage and transportation and convenient operation is the key for ensuring that the stroller product has market competitiveness.

Disclosure of Invention

The utility model aims to solve the technical problem that a novel locking and unlocking mode is provided to simplify the folding operation of children's shallow.

For solving the technical problem, the utility model adopts the following technical scheme:

the utility model provides a children's shallow, children's shallow has expansion state and fold condition, children's shallow include the frame, set up in the front wheel subassembly and the rear wheel subassembly of the bottom of frame, seat pocket subassembly, be used for locking children's shallow in the locking mechanical system of expansion state.

The seat pocket assembly comprises a seat part, a backrest part and a pedal part, the seat part is rotatably arranged relative to the frame, the backrest part is rotatably connected with the rear part of the seat part, and the pedal part is rotatably connected with the front part of the seat part;

the locking mechanism comprises a first locking device for locking the seat part and the frame and a second locking device for locking the seat part and the backrest part, and the first locking device and the second locking device respectively have a locking working state and an unlocking working state;

the stroller further comprises:

the first unlocking driving device is used for controlling the first locking device to be switched from a locking working state to an unlocking working state;

the second unlocking driving device is used for controlling the second locking device to be switched from the locking working state to the unlocking working state;

a first traction member for connecting the first unlocking drive with the footrest;

a second traction member for connecting the second unlocking drive with the pedal portion;

when the pedal part rotates to a set position relative to the seat part, the first unlocking driving device and the second unlocking device are triggered, and the first locking device and the second locking device are switched to an unlocking working state from a locking working state.

In some embodiments, the first locking device includes a first locking element and a first engaging element, the first locking element is slidably or rotatably disposed on one of the seat portion and the frame, the first engaging element is disposed on the other of the seat portion and the frame, the first locking element is engaged with and locked to the first engaging element when the first locking device is in the locking operating state, and the first locking element is disengaged from the first engaging element when the first locking device is in the unlocking operating state.

In some embodiments, the second locking device includes a second locking member slidably or rotatably provided on one of the seat portion and the backrest portion, and a second engaging member provided on the other of the seat portion and the backrest portion, the second locking member is engaged with and locked to the second engaging member when the second locking device is in the locking operation state, and the second locking member is disengaged from the second engaging member when the second locking device is in the unlocking operation state.

In some embodiments, the seat portion has a connecting member rotatably connected to the vehicle frame, the first locking member is slidably disposed on one of the connecting member and the vehicle frame, the first mating member is a lock hole formed in the other of the connecting member and the vehicle frame, a center line of the lock hole is perpendicular to a sliding direction of the first locking member, the first locking member is inserted into the lock hole when the first locking device is in a locking operation state, and the first locking member is disengaged from the lock hole when the first locking device is in an unlocking operation state, and the first locking device further includes a first elastic member for making the first locking member tend to be held in the lock hole.

In some embodiments, the seat portion has a first engaging element, the backrest portion has a second engaging element, the first engaging element and the second engaging element are rotatably connected by a rotating shaft, the second locking element has a plurality of racks distributed along its circumference, the length direction of each rack extends along the axial line direction of the rotating shaft, a plurality of tooth grooves distributed along its circumference are formed in the first engaging element and the second engaging element, respectively, the second locking element is slidably disposed on one of the first engaging element and the second engaging element and always engages with the plurality of tooth grooves on the other of the first engaging element and the second engaging element, the plurality of tooth grooves on the other of the first engaging element and the second engaging element constitute the second engaging element, and the plurality of racks also engage with the plurality of tooth grooves constituting the second engaging element when the second locking device is in the locking operation state; when the second locking device is in an unlocking working state, the plurality of racks are separated from the plurality of tooth grooves forming the second matching piece; the second locking means further comprises a second elastic member for urging the plurality of racks in a direction of engaging with the plurality of teeth grooves constituting the second engagement member.

In some embodiments, the first locking member is slidably disposed, and the first unlocking driving means comprises a first unlocking driving member, a first unlocking member slidably disposed;

the first unlocking driving piece is rotatably connected with the seat part, one end of the first unlocking driving piece is connected with the first traction piece, the other end of the first unlocking driving piece is used for abutting against the first unlocking piece, and the first unlocking driving piece rotates to drive the first unlocking piece to slide;

first unlocking piece with first locking piece through for the direction inclined plane cooperation of the slip direction slope of first locking piece, first unlocking piece slides and can drives first locking piece slides, makes first locking device switches between locking operating condition and unblock operating condition.

In some embodiments, the sliding direction of the first locking member is the left-right direction of the cart, the first unlocking member extends along the front-back direction of the cart, the sliding direction of the first unlocking member is the front-back direction of the cart, the first unlocking driving member is located inside the seat plate and rotates around the axis line horizontally extending along the left-right direction of the cart relative to the seat plate, the front portion of the first unlocking member is matched with the rear portion of the first unlocking driving member through a guide inclined surface inclined relative to the front-back direction of the cart, and when the rear portion of the first unlocking driving member rotates downward, the guide inclined surface at the rear portion of the first unlocking member is in sliding fit with the guide inclined surface at the front portion of the first unlocking member to push the first unlocking member to slide backward, so as to drive the first locking member to be away from the first mating member, thereby unlocking the first locking member.

In some embodiments, the seat portion includes a seat plate and a connecting member located at a middle position behind the seat plate, the frame has rod bodies located at left and right sides of the connecting member, the first locking devices are respectively disposed between the connecting member and the rod bodies at two sides, the first locking members of the two first locking devices respectively include a locking pin seat slidably disposed on the connecting member and a locking pin fixed on the locking pin seat, the rear portion of the first unlocking member has two unlocking portions respectively inserted into the two locking pin seats, and each of the locking pin seats and the unlocking portions is respectively formed with a guiding inclined surface.

In some embodiments, the second unlocking driving device includes a second unlocking member connected to the second traction member, the second unlocking member is slidably disposed with respect to the rotation shaft and the second locking member, and the second unlocking member slides to drive the second locking member to slide, so that the second locking device is switched between the locking working state and the unlocking working state.

In some embodiments, the sliding direction of the second locking member is a left-right direction of the cart, the sliding direction of the second unlocking member is a front-back direction of the cart, and the second locking member and the second unlocking member are engaged with each other through a guide inclined surface inclined with respect to the left-right direction of the cart.

In some embodiments, the first traction member is a traction cable.

In some embodiments, the second traction member is a traction cable.

In some embodiments, a rotating shaft is fixedly connected to an upper portion of the pedal portion, the rotating shaft is relatively rotatably disposed at a front portion of the seat portion, a first fixing member and a second fixing member are disposed on the rotating shaft, the first traction member is connected to the first fixing member, and the second traction member is connected to the second fixing member.

In some embodiments, the second locking devices are respectively arranged between two sides of the rear part of the seat part and two sides of the lower part of the backrest part, and two second unlocking driving devices are respectively arranged; the rotating shaft comprises a left rotating shaft, a right rotating shaft and an intermediate connecting piece which is positioned between the left rotating shaft and the right rotating shaft and is used for connecting the left rotating shaft and the right rotating shaft, the left end part of the left rotating shaft and the right end part of the right rotating shaft are respectively and rotatably connected with two sides of the front part of the seat part, the left rotating shaft and the right rotating shaft are respectively and fixedly provided with the first fixing pieces, and the two first fixing pieces are respectively used for connecting the two second traction pieces; the second fixing piece is a roller fixed on the periphery of the middle connecting piece, and the first traction piece is wound on the roller.

In some embodiments, the frame comprises a front bracket, a rear bracket and a push rod frame, and the push rod frame comprises an upper push rod frame and a lower push rod frame which is rotatably connected with the upper push rod frame; the front bracket, the rear bracket and the lower push rod bracket are rotationally connected, a third bracket is rotationally connected with one of the front bracket, the rear bracket and the lower push rod bracket, or the front bracket, the rear bracket and the lower push rod bracket are rotationally connected together by a pivot;

the seat pocket assembly is rotatably connected with the upper push rod frame, and the joint of the seat pocket assembly and the upper push rod frame is positioned below the joint of the upper push rod frame and the lower push rod frame;

when the stroller is in a folded state, the seat pocket assembly, the upper push rod frame, the lower push rod frame, the front support and the rear support are sequentially closed from front to back;

the first locking device is arranged between the seat part and the lower push rod frame.

In some embodiments, when the pedal portion rotates to a set position relative to the seat portion, the first unlocking driving device and the second unlocking device are synchronously triggered, so that the first locking device and the second locking device are simultaneously switched from the locking working state to the unlocking working state.

In other embodiments, when the pedal portion rotates to a set position relative to the seat portion, the first unlocking driving device and the second unlocking device are triggered one after another.

In some embodiments, the stroller further comprises a third unlocking driving device for controlling the second locking device to be switched from the locking working state to the unlocking working state, a third traction member, and an operating member connected with the third unlocking driving device through the third traction member, wherein the operating member is at least partially exposed from the backrest portion.

In some embodiments, when the stroller is in the working state, the position of the footrest relative to the seat portion is defined as an initial position, and the set position is a position where the footrest is rotated upward by a set angle from the initial position.

In some embodiments, in the initial position, the footrest section extends obliquely upward from front to rear; under the setting position, the pedal part extends downwards from front to back.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:

the utility model discloses the shallow rotates the unblock that realizes two positions through pedal, and the folding operation of unblock novel and the shallow of being convenient for of unblock mode.

Drawings

Fig. 1 is a perspective view of a stroller according to some embodiments of the present invention;

FIG. 2 is a first perspective view of the seat pocket assembly of the stroller of FIG. 1 fully collapsed;

FIG. 3 is a second perspective view of the seat pocket assembly of the stroller of FIG. 1 fully collapsed;

FIG. 4 is a partially folded perspective view of the stroller of FIG. 1;

FIG. 5 is a perspective view of the stroller of FIG. 1 fully collapsed;

fig. 6 is an exploded view of a seat pocket assembly according to some embodiments of the present invention;

fig. 7 is a schematic illustration of a partial explosion of a seat pocket assembly in accordance with some embodiments of the present invention;

fig. 8 is a perspective view of a first unlocking drive member in accordance with some embodiments of the present invention;

fig. 9 is a perspective view of a first unlocking member according to some embodiments of the present invention;

fig. 10 is a perspective view of a second unlocking member according to some embodiments of the present invention;

fig. 11 is a perspective view illustrating a seat pocket assembly and a partial lower boom housing according to some embodiments of the present invention;

FIG. 12 is a front view of FIG. 11;

fig. 13 is a view showing the structure of the first locking means in a locking operation state;

fig. 14 is a view showing the structure of the first locking means in an unlocked operation state;

FIG. 15 is an enlarged view of area a of FIG. 13;

FIG. 16 is an enlarged view of region b of FIG. 14;

FIG. 17 is a top plan view, partly in section, of FIG. 11 with the second locking device in a locked operative condition;

fig. 18 is a sectional view of reference number 211 in fig. 11, wherein the second locking means is in an unlocked operative condition;

FIG. 19 is an enlarged view of region c of FIG. 17;

FIG. 20 is an enlarged view of region d of FIG. 18;

fig. 21 is a perspective view of a seat pocket assembly in accordance with some embodiments of the present invention;

FIG. 22 is a front view of FIG. 21;

FIG. 23 is a longitudinal cross-sectional view of FIG. 21, wherein the first release actuator is not actuated and the first locking device is in a locked condition;

FIG. 24 is an enlarged view of area e of FIG. 23;

FIG. 25 is a longitudinal cross-sectional view of the seat pocket assembly of FIG. 23, with the footrest rotated above the horizontal, and with the first unlocking actuation means activated, and the first locking means in the process of unlocking;

FIG. 26 is an enlarged view of region f of FIG. 25;

FIG. 27 is a view of the footrest section of FIG. 25 after continued upward rotation with the first locking device fully unlocked;

FIG. 28 is an enlarged view of region g of FIG. 27;

FIG. 29 is a longitudinal cross-sectional view of the seat pocket assembly folded toward the frame;

FIG. 30 is an enlarged view of region h of FIG. 29;

FIG. 31 is a perspective view of the seat pocket assembly when fully folded.

Wherein:

1-a vehicle frame; 10-a front support; 10 a-anterior struts; 10 b-a bottom bar; 11-a rear support; 11 a-left rear strut; 11 b-right rear strut; 11 c-a connecting sleeve; 12-upper push rod frame; 13-lower push rod rack; 13 a-left lower push rod; 13 b-right lower push rod; 14 a-left guide; 14 b-a right guide;

2-a seat pocket assembly; 20-a seat portion; 200-a seat plate; 201-a connector; 202-a first coupling member; 21-backrest part; 210-a back rest bar; 211-a second bonding element; 211 a-a second tooth slot; 22-a foot pedal; 220-leg blocking part; 221-a foot blocking part; 23-armrest parts; 24-a front stop; 25-a base;

3-a front wheel assembly; 4-a rear wheel assembly;

5-a first locking device; 50-first locking member, 500-keyway; 501-a lock pin; 51-a first mating member; 52-a first resilient member;

6-a second locking means; 60-a second locking element; 600-a rack; 61-a second elastic member; 62-a first tooth slot; 63-unlocking means;

7-a first traction member; 70-a first unlocking drive; 701-a guide slope; 71-first unlocking member; 710-unlocking; 711-a guide slope;

8-second unlocking member; 80-elongated holes; 81-a guide bevel;

9-a second traction member;

15-a rotating shaft; 15 a-left rotating shaft; 15 b-a right rotating shaft; 15 c-intermediate connectors; 16-a first fixture; 17-second fixing element.

Detailed Description

The utility model discloses one of the innovation lies in innovation unblock mode, provides new unblock thinking, makes things convenient for the unblock operation. The utility model discloses other innovation still includes carries out reasonable layout and design to specific unlocking structure to can realize carrying out the unblock in step to a plurality of locking device with more succinct structure in limited space, and in some embodiments, cooperate the corresponding locking mechanical system's of ingenious design of frame position. According to the utility model discloses a novel structure, folding small, the storage and convenient, the convenient operation's of transportation children's shallow can be obtained. The present invention will be described in detail with reference to specific examples.

As shown in fig. 1 to 31, the present embodiment provides a foldable stroller, which has an unfolded state and a folded state, and specifically includes a frame 1, a seat bag assembly 2, a front wheel assembly 3, a rear wheel assembly 4, a locking mechanism for locking the stroller in the unfolded state, and an unlocking mechanism for unlocking the locking mechanism.

The frame 1 and the seat pocket assembly 2 are foldable themselves, respectively, and the seat pocket assembly 2 can be folded in relative to the frame 1. Therefore, the folding volume of the whole vehicle is smaller. In order to stabilize the stroller in the unfolded state, the locking mechanism includes a locking means (herein also referred to as a first locking means 5) for locking the frame 1 and the seat pocket assembly 2 relatively to each other, a locking means (herein also referred to as a second locking means 6) for locking the seat pocket assembly 2 itself relatively to each other, and a locking means for locking the frame 1 itself relatively to each other. Accordingly, an unlocking device for unlocking these locking devices needs to be provided. The present embodiment focuses on innovations relating to an unlocking device that unlocks the first locking device 5 and the second locking device 6. Other locking devices and unlocking methods thereof which are not involved can adopt conventional setting methods in the field or locking and unlocking methods referring to the existing cart, and are not described herein again.

As shown in fig. 6 to 12, in one embodiment, the seat pocket assembly 2 includes a seat portion 20, a backrest portion 21, a footrest portion 22, armrest portions 23, and a front barrier portion 24. The seat portion 20 further includes a seat plate 200, a connecting member 201 disposed at a middle position behind the seat plate 200 (in the illustrated embodiment, a base 25 is disposed below the seat plate 200, and a front portion of the connecting member 201 is fixedly connected to a rear portion of the base 25), and first coupling members 202 disposed at two sides of a rear portion of the seat plate 200. The backrest portion 21 further includes backrest rods 210 at both sides and second coupling members 211 respectively provided at lower ends of the two backrest rods 210. The footrest section 22 further includes leg-blocking portions 220 extending substantially in the up-down direction and leg-blocking portions 221 extending substantially in the horizontal direction. The seat pocket assembly 2 is relatively rotatably connected with the frame 1 through a connecting member 201. The parts of the seat pocket component 2 are relatively connected in a rotating way to realize self folding. Specifically, the upper portion of the leg blocking portion 220 is rotatably connected to the front portion of the seat plate 200, the second coupling members 211 at the lower portion of the back lever 210 at both sides are rotatably connected to the first coupling members 202 at both sides, respectively, the rear portion of the armrest portion 23 is rotatably connected to the back lever 210, and the upper end portion and the lower end portion of the front blocking portion 24 are rotatably connected to the front portion of the armrest portion 23 and the front portion of the seat plate 200, respectively.

As shown in fig. 1 to 6, the frame 1 includes a front bracket 10, a rear bracket 11, and a push rod bracket, wherein: the front bracket 10 further includes a front rod 10a extending in the up-down direction and a bottom rod 10b connected to a lower end portion of the front rod 10a, and a set of front wheel assemblies 3 are connected to both end portions of the bottom rod 10b, respectively. The rear bracket 11 further includes a left rear stay 11a and a right rear stay 11b extending in the up-down direction, respectively, and a set of rear wheel assemblies 4 are connected to lower end portions of the left rear stay 11a and the right rear stay 11b, respectively. The push rod frame includes an upper push rod frame 12 and a lower push rod frame 13, wherein the lower push rod frame 13 further includes a left lower push rod 13a and a right lower push rod 13b extending in the up-down direction, respectively. The upper end of the front rod 10a, the upper end of the left rear rod 11a, the upper end of the right rear rod 11b, the lower end of the left push rod 13a, and the lower end of the right push rod 13b are pivotally connected to a rotating shaft, i.e., the five are pivotally connected together. The lower end of the upper push rod frame 12 passes through between the left lower push rod 13a and the right lower push rod 13b, the lower non-end part of the upper push rod frame 12 is rotatably connected with the left lower push rod 13a and the right lower push rod 13b through a rotating shaft, and the lower end of the upper push rod frame 12 is rotatably connected with the upper end of the connecting piece 201 of the seat pocket assembly 2 through a rotating shaft. In the unfolded state, the length extension directions of the front support rod 10a, the left lower push rod 13a, the right lower push rod 13b and the upper push rod frame 12 are consistent, and the outline of the whole frame is smooth and concise. When the folding is performed, the upper push rod frame 12 rotates downward and approaches relative to the left and right push rods 13a, 13b, the left and right push rods 13a, 13b rotate and approach relative to the front frame 10, and the front frame 10 rotates and approaches relative to the left and right rear struts 11a, 11 b.

As shown in fig. 13 to 16, in one embodiment, two first locking means 5 for locking the seat pocket assembly 2 with respect to the vehicle frame 1 are provided between the connecting member 201 and the left push down lever 13a and between the connecting member 201 and the right push down lever 13b, respectively. Specifically, each first locking device 5 includes a first locking member 50, a first mating member 51, and a first elastic member 52 (specifically, a spring), wherein the first locking member 50 is slidably disposed on the connecting member 201 along the front-rear direction of the stroller, and the first mating member 51 is specifically a lock hole opened on the left lower push rod 13a or the right lower push rod 13b. The first locking member 50 further includes a locking pin holder 500 and a locking pin 501, the locking pin holder 500 is slidably disposed on the connecting member 201 and has an insertion cavity, an inner wall of which is formed with a guide slope for cooperating with an unlocking mechanism to achieve unlocking, which will be described in detail later. The lock pin 501 has a cylindrical shape, the length direction of which coincides with the center line direction of the lock hole, and can be inserted into the lock hole. When the first locking device 5 is in the locking working state, the lock pin 501 is stably inserted into the corresponding lock hole under the action of the first elastic member 52, so as to achieve locking. When the first locking device 5 needs to be unlocked, the unlocking mechanism drives the lock pin 501 to overcome the force of the first elastic element 52, so that the lock pin 501 is separated from the lock hole.

In this case, the first locking device 5 is unlocked in a novel manner, i.e. by turning the foot rest 22. Specifically, in one embodiment, the unlocking mechanism employed in this manner is as follows.

As shown in fig. 6 to 9 and 22 to 28, the pushchair comprises a first unlocking drive and a first pulling member 7, the first pulling member 7 being an elongated pulling cable which is connected both to the first unlocking drive and to the footrest 22. The first unlocking driving device specifically comprises a first unlocking driving piece 70 arranged in the seat plate 200 and a first unlocking piece 71 which can be arranged in a sliding manner, wherein the first unlocking driving piece 70 is rotatably connected with the seat plate 200, the rotation axis lines of the first unlocking driving piece 70 and the seat plate 200 horizontally extend along the left-right direction of the trolley, the front end part of the first unlocking driving piece 70 is connected with the first traction piece 7, and the rear end part of the first unlocking driving piece is provided with a guide inclined plane 701.

As shown in fig. 9 and 22 to 28, the first unlocking member 71 has an elongated shape, and the length direction thereof coincides with the front-rear direction of the cart. The front portion of the first unlocking piece 71 is formed with a guide slope 711 to be fitted with the guide slope 701 of the rear portion of the first unlocking actuator 70. Two unlocking parts 710 having guide slopes are formed at the rear of the first unlocking part 71, the unlocking parts 710 are inserted into the insertion cavities of the two locking pin holders 500, respectively, and the unlocking parts 710 are engaged with the insertion cavities of the locking pin holders 500 through the guide slopes. As shown in fig. 23 to 24, when the first locking device 5 is locked, the rear portion of the first unlocking driving member 70 abuts against the front portion of the first unlocking member 71, the rear portion of the first unlocking member 71 abuts against the latch seat 500, and the latch 501 is stably inserted into the latch hole by the first elastic member 52. When the unlocking is required, as shown in fig. 25 to 28, the pedal portion 22 is rotated upward, the first unlocking driving member 70 is pulled by the first pulling member 7, so that the rear portion of the first unlocking driving member 70 rotates downward, the first unlocking member 71 is driven to slide backward by the cooperation of the first unlocking member and the guiding inclined surface between the first unlocking member 71, and the first unlocking member 71 slides backward, so as to overcome the elastic force of the first elastic member 52, and drive the two locking pin bases 500 to respectively get away from the corresponding locking holes, thereby unlocking.

As shown in fig. 6 to 7 and 17 to 20, in this example, there are two second locking devices 6 for locking the seat pocket assembly 2 itself in the unfolded state, and the two second locking devices are respectively disposed between the first engaging member 202 and the second engaging member 211 on both sides. The second locking device 6 comprises a second locking member 60, a second elastic member 61, and a second mating member. The second locking member 60 has a plurality of racks 600 distributed along its circumference, the length direction of the racks 600 extends along the axial line direction of the rotating shaft between the first coupling member 202 and the second coupling member 211, and the second mating member is a plurality of first tooth grooves 62 distributed along its circumference in the first coupling member 202. A plurality of second tooth grooves 211a distributed along the circumferential direction of the second coupling member 211 are formed in the second coupling member 211, the second locking member 60 is slidably disposed on the first coupling member 202 and always engaged with the plurality of first tooth grooves 62 of the first coupling member 202, and the sliding direction of the second locking member 60 is the left-right direction of the cart. The secondary locking member 60 has a guide ramp formed thereon that functions to cooperate with an unlocking mechanism, as will be described further below, to effect unlocking. When the second locking device 6 is in the locking working state, under the action of the second elastic member 61 (specifically, a spring), the plurality of racks 600 on the second locking member 60 are engaged with the plurality of second tooth grooves 211a formed on the second coupling member 211, so as to achieve locking; when the second locking device 6 is in the unlocking operation state, the plurality of racks 600 on the second locking member 60 are disengaged from the plurality of second tooth grooves 211a on the second coupling member 211, so that the unlocking is realized.

In this example, there are two ways to unlock the second locking device 6. One is, as set up in the existing children's barrow, specially set up the unlocking mechanism to the pertinence, usually include the operating parts (such as the button, etc.) exposed, hide in the car frame pole body, or can slip or rotatable unlocking piece 63, and the haulage cable that connects operating parts and unlocking piece, through operating the operating parts, drive the unlocking piece to slip or rotate, then drive the lockpin 501 to slip and break away from the lockhole, realize the unblock. Since the specific structure in this manner can be realized by conventional means, it will not be described herein in detail. In this case, the unlocking of the second locking device 6 also includes a new unlocking mode, namely, the unlocking is completed by rotating the pedal part 22. Specifically, in one specific embodiment, two unlocking mechanisms are provided corresponding to the two second locking devices 6, respectively. The specific unlocking structure adopted is as follows.

As shown in fig. 6, the unlocking structure for unlocking the second locking device 6 includes a second unlocking driving device and a second pulling member 9. Each of the second unlocking driving means includes a second unlocking member 8, and the second unlocking member 8 is slidable in the front-rear direction of the cart with respect to the rotation shaft between the first coupling member 202 and the second coupling member 211 and the second locking member 60. Specifically, the second unlocking member 8 has an elongated hole 80 and a guide slope 81, the rotation axis between the first coupling member 202 and the second coupling member 211 is disposed through the elongated hole 80, and the guide slope 81 of the second unlocking member 8 is slidably fitted with the guide slope of the second locking member 60. As shown in fig. 19, when the second locking device 6 is locked, the rack 600 of the second locking member 60 is stably engaged with the second tooth groove 211a of the second coupling member 211 by the second elastic member 61. When the unlocking is required, as shown in fig. 25 to 28, the pedal portion 22 is rotated upward, the second unlocking member 8 is pulled by the second pulling member 9, so that the second unlocking member 8 slides forward, and the sliding of the second unlocking member 8 drives the rack 600 of the second locking member 60 to slide in a direction away from the second tooth groove 211a of the second coupling member 211 through the matching of the guiding inclined planes until the rack 600 of the second locking member 60 is completely separated from the second tooth groove 211a of the second coupling member 211, so as to achieve the unlocking.

Further, the unlocking of the first locking device 5 and the second locking device 6 by rotating the footrest 22 is synchronized. As described above, the first unlocking drive and the two second unlocking drives are connected to the foot rest 22 via the first pulling means 7 and the second pulling means 9, respectively. The specific connection between them is as follows.

As shown in fig. 6 to 7, the upper portion of the foot pedal portion 22 is fixedly connected with a rotating shaft 15, the rotating shaft 15 includes a left rotating shaft 15a, a right rotating shaft 15b and an intermediate connecting member 15c located between the left rotating shaft 15a and the right rotating shaft 15b, the left end portion of the left rotating shaft 15a and the right end portion of the right rotating shaft 15b are respectively rotatably connected with two sides of the front portion of the seat portion 20, the left rotating shaft 15a and the right rotating shaft 15b are respectively and fixedly provided with a first fixing member 16, and the two first fixing members 16 are respectively used for connecting two second traction members 9; the second fixing member 17 is a roller fixed to the outer circumference of the intermediate link member 15c, and a portion of the first traction member 7 is wound around the roller.

As shown in fig. 6 to 7 and 19 to 31, when the foot pedal 22 is rotated upward, the first pulling member 7 pulls the front end portion of the first unlocking driving member 70 upward, so that the rear portion of the first unlocking driving member 70 is rotated downward, and as described above, the lock pin 501 is finally driven to disengage from the lock hole, thereby unlocking the first locking device 5; meanwhile, the two second traction pieces 9 respectively pull the two second unlocking pieces 8 to make the second unlocking pieces 8 slide forward, so that the rack 600 on the second locking piece 60 is finally driven to be disengaged from the second tooth groove 211a on the second locking piece 211, and the unlocking of the second locking device 6 is realized.

As shown in fig. 23, 25 and 27, in a specific embodiment, when the pedal portion 22 is located at the initial position in the normal operating state, the first unlocking driving device and the second unlocking driving device are triggered synchronously to complete the unlocking only when the pedal portion is rotated upward from the initial position by a certain angle to reach the set position. In the illustrated embodiment, the pedal portion 22 is rotated upward beyond the horizontal plane to trigger the two unlocking actuators to unlock the first and second locking devices 5 and 6. In the initial position, the foothold 22 is extended obliquely upward from the front to the rear as a whole, and accordingly, it is preferable that the foothold 22 is rotated to be extended obliquely downward from the front to the rear in the aforementioned set position. Due to the arrangement, on one hand, the locking device is prevented from being unlocked due to misoperation in a normal use state, and the use safety is ensured; on the other hand, the operation of turning the foothold 22 upward is an operation generally required for folding, and by this operation, the unlocking is simultaneously performed, which greatly facilitates the folding operation.

As another optional embodiment of the present invention, it may also be provided that the first unlocking driving device and the second unlocking driving device are not triggered at the same time, but are triggered one after the other. For example, the step portion 22 may be rotated to a certain position, the first unlocking driving means may be triggered first, or the second unlocking driving means may be triggered first, and when the step portion is rotated to another position, the other unlocking means may be triggered. This also facilitates folding. In particular, on the basis of the above-described embodiments, this can be achieved by adjusting the stroke of the first pulling element 7 and the second pulling element 9 accordingly.

The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the protection scope of the present invention should not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (13)

1. The utility model provides a children's shallow, children's shallow has expansion state and fold condition, children's shallow include the frame, set up in the front wheel subassembly and the rear wheel subassembly of the bottom of frame, seat pocket subassembly, be used for locking children's shallow in the locking mechanical system of expansion state, its characterized in that:

the seat pocket assembly comprises a seat part, a backrest part and a pedal part, wherein the seat part is rotatably arranged relative to the frame, the backrest part is rotatably connected with the rear part of the seat part, and the pedal part is rotatably connected with the front part of the seat part;

the locking mechanism comprises a first locking device for locking the seat part and the frame and a second locking device for locking the seat part and the backrest part, and the first locking device and the second locking device respectively have a locking working state and an unlocking working state;

the stroller further comprises:

the first unlocking driving device is used for controlling the first locking device to be switched from a locking working state to an unlocking working state;

the second unlocking driving device is used for controlling the second locking device to be switched from the locking working state to the unlocking working state;

a first pulling member for connecting the first unlocking drive means with the footrest;

a second traction member for connecting the second unlocking drive with the pedal portion;

when the pedal part rotates to a set position relative to the seat part, the first unlocking driving device and the second unlocking device are triggered, and the first locking device and the second locking device are switched to an unlocking working state from a locking working state.

2. The stroller of claim 1, wherein: the first locking device comprises a first locking part and a first mating part, the first locking part is arranged on one of the seat part and the frame in a sliding or rotating mode, the first mating part is arranged on the other of the seat part and the frame, when the first locking device is in a locking working state, the first locking part is matched and locked with the first mating part, and when the first locking device is in an unlocking working state, the first locking part is disengaged from the first mating part;

and/or the second locking device comprises a second locking piece and a second matching piece, the second locking piece is arranged on one of the seat part and the backrest part in a sliding or rotating mode, the second matching piece is arranged on the other of the seat part and the backrest part, when the second locking device is in a locking working state, the second locking piece is matched and locked with the second matching piece, and when the second locking device is in an unlocking working state, the second locking piece is disengaged from the second matching piece.

3. The stroller of claim 2, wherein: the seat part is provided with a connecting piece which is rotatably connected with the frame, the first locking piece is slidably arranged on one of the connecting piece and the frame, the first mating piece is a locking hole formed in the other of the connecting piece and the frame, the center line of the locking hole is perpendicular to the sliding direction of the first locking piece, the first locking piece is inserted into the locking hole when the first locking device is in a locking working state, and the first locking piece is separated from the locking hole when the first locking device is in an unlocking working state, and the first locking device further comprises a first elastic piece which is used for enabling the first locking piece to be inclined to be kept in the locking hole;

and/or, the seat part is provided with a first combining piece, the backrest part is provided with a second combining piece, the first combining piece and the second combining piece are rotatably connected through a rotating shaft, the second locking piece is provided with a plurality of racks distributed along the circumferential direction of the second locking piece, the length direction of each rack extends along the axial lead direction of the rotating shaft, a plurality of tooth sockets distributed along the circumferential direction of the second locking piece are respectively formed in the first combining piece and the second combining piece, the second locking piece is slidably arranged on one of the first combining piece and the second combining piece and is always meshed with the plurality of tooth sockets on the part, the plurality of tooth sockets on the other one of the first combining piece and the second combining piece form a second matching piece, and when the second locking device is in a locking working state, the plurality of racks are also meshed with the plurality of tooth sockets forming the second matching piece; when the second locking device is in an unlocking working state, the plurality of racks are separated from the plurality of tooth grooves forming the second matching piece; the second locking means further comprises a second elastic member for urging the plurality of racks in a direction of engaging with the plurality of teeth grooves constituting the second engaging member.

4. The stroller of claim 3, wherein: the first locking piece can be arranged in a sliding mode, and the first unlocking driving device comprises a first unlocking driving piece and a first unlocking piece which can be arranged in a sliding mode;

the first unlocking driving piece is rotatably connected with the seat part, one end of the first unlocking driving piece is connected with the first traction piece, the other end of the first unlocking driving piece is used for abutting against the first unlocking piece, and the first unlocking driving piece can drive the first unlocking piece to slide by rotating;

first unlocking piece with first locking piece is through for the direction inclined plane cooperation of the slip direction slope of first locking piece, first unlocking piece slides and can drive first locking piece slides, makes first locking device switches between locking operating condition and unblock operating condition.

5. The stroller of claim 4, wherein: the sliding direction of first locking piece is the left and right directions of shallow, first unlocking piece extends along the fore-and-aft direction of shallow and its sliding direction is the fore-and-aft direction of shallow, first unblock driving piece is located inside the seat portion, and for the seat portion rotates around the axial lead that extends along the left and right sides direction level of shallow, the anterior portion of first unlocking piece with the rear portion of first unblock driving piece through for the direction inclined plane cooperation of shallow fore-and-aft direction slope, during the rear portion downwardly rotating of first unblock driving piece, the direction inclined plane at its rear portion with the anterior direction inclined plane sliding fit of first unlocking piece promotes first unlocking piece backward sliding, and then drives first locking piece is kept away from first fitting piece realizes the unblock.

6. The stroller of claim 4, wherein: the seat portion includes the bedplate and is located the connecting piece of the position at bedplate rear middle part, the frame has and is located the body of rod of the connecting piece left and right sides the connecting piece with be provided with respectively between the body of rod of both sides first locking device, two first locking device's first locking piece sets up including sliding separately in lockpin seat on the connecting piece and be fixed in lockpin on the lockpin seat, the rear portion of first unlocking piece has two unlocking parts, two unlocking parts correspond respectively and insert two lockpin seat, and each the lockpin seat the unlocking part is formed with the direction inclined plane respectively.

7. The stroller of claim 3, wherein: the second unblock drive arrangement include with the second unblock piece that the second traction piece is connected, the second unblock piece for pivot and second locking piece can set up with sliding, just the second unblock piece slides and can drive the second locking piece slides, makes second locking device switches between locking operating condition and unblock operating condition.

8. The stroller of claim 7, wherein: the slip direction of second locking piece is the left right direction of shallow, the slip direction of second unlocking piece is the fore-and-aft direction of shallow, the second locking piece the cooperation of direction inclined plane through the left right direction slope for the shallow between the second unlocking piece.

9. The stroller of claim 3, wherein: the first traction piece is a traction cable; and/or the second traction piece is a traction cable; and/or a rotating shaft is fixedly connected to the upper part of the pedal part, the rotating shaft is relatively rotatably arranged at the front part of the seat part, a first fixing piece and a second fixing piece are arranged on the rotating shaft, the first traction piece is connected with the first fixing piece, and the second traction piece is connected with the second fixing piece.

10. The stroller of claim 9, wherein: the two second locking devices are respectively and correspondingly arranged between the two sides of the rear part of the seat part and the two sides of the lower part of the backrest part, and the number of the second unlocking driving devices is two; the rotating shaft comprises a left rotating shaft, a right rotating shaft and an intermediate connecting piece which is positioned between the left rotating shaft and the right rotating shaft and connects the left rotating shaft and the right rotating shaft, the left end part of the left rotating shaft and the right end part of the right rotating shaft are respectively and rotatably connected with two sides of the front part of the seat part, the left rotating shaft and the right rotating shaft are respectively and fixedly provided with the first fixing pieces, and the two first fixing pieces are respectively used for connecting the two second traction pieces; the second fixing piece is a roller wheel and is fixed on the periphery of the intermediate connecting piece, and the part of the first traction piece is wound on the roller wheel.

11. The stroller of claim 1, wherein: the frame comprises a front bracket, a rear bracket and a push rod frame, wherein the push rod frame comprises an upper push rod frame and a lower push rod frame which is rotationally connected with the upper push rod frame; the front bracket, the rear bracket and the lower push rod bracket are rotationally connected, a third bracket is rotationally connected with one of the front bracket, the rear bracket and the lower push rod bracket, or the front bracket, the rear bracket and the lower push rod bracket are rotationally connected together by a pivot;

the seat pocket assembly is rotatably connected with the upper push rod frame, and the joint of the seat pocket assembly and the upper push rod frame is positioned below the joint of the upper push rod frame and the lower push rod frame;

when the child stroller is in a folded state, the seat pocket assembly, the upper push rod frame, the lower push rod frame, the front support and the rear support are sequentially closed from front to back;

the first locking device is arranged between the seat part and the lower push rod frame.

12. Child stroller according to any of claims 1 to 11, characterized in that: when the pedal part rotates to a set position relative to the seat part, the first unlocking driving device and the second unlocking device are triggered synchronously or first and then, so that the first locking device and the second locking device are simultaneously switched from a locking working state to an unlocking working state; and/or the child stroller further comprises a third unlocking driving device for controlling the second locking device to be switched from the locking working state to the unlocking working state, a third traction piece and an operating piece connected with the third unlocking driving device through the third traction piece, wherein the operating piece is at least partially exposed out of the backrest part; and/or when the stroller is in a working state, the position of the pedal part relative to the seat part is defined as an initial position, and the set position is a position obtained by rotating the pedal part upwards by a set angle from the initial position.

13. The stroller of claim 12, wherein: in the initial position, the pedal part extends obliquely upwards from front to back; in the set position, the step part extends from front to back in a downward inclination manner.

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