CN210822419U - Baby carriage with foldable seat - Google Patents

Abstract

The utility model provides a baby carriage with a foldable seat, which comprises a frame and a seat frame which is detachably arranged on the frame, wherein the seat frame comprises a connecting piece matched with the frame, a front frame and a rear frame which are matched with each other in a rotating way relative to the connecting piece, and a rotating locking mechanism which is acted between the front frame and the rear frame; the seat frame has an unfolding state and a folding state, and the front frame and the rear frame are folded and gathered at the connecting piece part in the folding state; the frame also has an unfolding state and a folding state, the frame in the folding state is of a flat structure, and the seat frame in the folding state is attached to one side of the flat structure in the thickness direction. The technical scheme disclosed in the application can improve user experience according to the use requirements of users in two states of folding and unfolding, greatly improves user viscosity, and is favorable for improving product competitiveness.

Description

Baby carriage with foldable seat

Technical Field

The utility model relates to a bassinet field especially relates to folding bassinet of seat.

Background

The frame of current handcart is mostly collapsible structure, sees existing articulated complicated link mechanism from structural, also has the link type of relative succinct.

The related technical document discloses a quickly folded baby carriage frame, which comprises a front leg group, a rear leg group, a handle group and two folding structures, wherein each folding structure comprises a lower joint, an upper joint and a joint supporting seat: in each folded configuration, the lower joint is connected to the front leg set: the upper joint is connected with the sub-handle group: the joint supporting seat is connected with the rear foot assembly: lower joint and joint supporting seat rotatable coupling go up joint and joint supporting seat rotatable coupling: the lower joint and the upper joint can be mutually and oppositely connected to rotate, one end of the linkage connecting rod is rotatably connected with the upper joint, and the other end of the linkage connecting rod is rotatably connected with the lower joint: and the control mechanism can limit the rotation of the lower joint and the upper joint relative to the joint supporting seat.

The structure similar to the prior art is mainly characterized in that the frame comprises a front foot rod, a rear foot rod and a handle rod which are in relative rotation fit through a hinge mechanism, and the hinge mechanism can be a single-shaft structure or a multi-shaft structure with a plurality of rotation axes; the folding and unfolding of the frame can be realized by the relative rotation of the front foot rod, the rear foot rod and the handle rod; however, in such a structure, because of the connection relationship of the rod members, the variation range of the overall volume of the unfolded and folded frame and the flatness degree after folding have certain limitations; meanwhile, the common baby carriage is inconvenient to disassemble the seat before folding.

SUMMERY OF THE UTILITY MODEL

The application discloses a baby carriage with a foldable seat, which comprises a frame and a seat frame detachably arranged on the frame, wherein the seat frame comprises a connecting piece matched with the frame, a front frame and a rear frame which are matched with each other in a rotating way relative to the connecting piece, and a rotating locking mechanism acting between the front frame and the rear frame;

the seat frame has an unfolding state and a folding state, and the front frame and the rear frame are folded and gathered at the connecting piece part in the folding state;

the frame also has an unfolding state and a folding state, the frame in the folding state is of a flat structure, and the seat frame in the folding state is attached to one side of the flat structure in the thickness direction.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Preferably, the frame comprises:

the seat frame is arranged on the main joint through the connecting piece;

the bottom end of the front foot rod is provided with a front wheel, and the top end of the front foot rod is connected to the main joint;

the push handle rod is connected with the main joint and is in rotating fit with the front foot rod;

the bottom end of the rear foot rod is provided with a rear wheel, and the top end of the rear foot rod is hinged with the push handle rod;

the two ends of the linkage rod are respectively hinged with the front foot rod and the rear foot rod;

the front foot rod, the hand pushing rod, the rear foot rod and the linkage rod form a deformable four-bar mechanism, the front foot rod and the hand pushing rod are folded at the main joint part and are folded towards one sides of the rear foot rod and the linkage rod under a folding state, and the seat frame under the folding state is adjacent to one side of the hand pushing rod.

Preferably, the length of the seat frame in the folded state is smaller than that of the push rod.

Preferably, a socket is installed on the main joint, a connector in the seat frame is provided with a plug matched with the socket, and an inserting locking piece which is matched with the plug to keep a relative position is further arranged between the socket and the plug.

Preferably, in the seat frame, the connecting member, the front frame and the rear frame are respectively provided with a joint part, and the joint parts of the connecting member, the front frame and the rear frame are sequentially attached and are in pivot rotation fit.

Preferably, the number of the connecting pieces is two, the connecting pieces are arranged on two sides of the frame, the front frame and the rear frame are both U-shaped, and two end parts of the U-shaped are respectively matched with one connecting piece.

Preferably, the joint portion includes:

the first combination part is fixed with the front frame, the second combination part is fixed with the rear frame, and the third combination part is fixed with the connecting piece, wherein the second combination part is arranged in the middle, and the other two combination parts are respectively arranged on two opposite sides of the second combination part;

the first combining part and the second combining part which are acted by the rotation locking mechanism;

an angle locking mechanism for keeping the relative angle of the second combining part and the third combining part is further arranged between the second combining part and the third combining part.

Preferably, the rotation lock mechanism includes:

the mounting groove is formed in one of the first combining part and the second combining part;

a positioning groove formed in the other of the first combining portion and the second combining portion;

a locking pin located in the mounting groove and movable along the axis of the pivot;

the driving spring is pressed between the mounting groove and the locking pin;

when the seat frame is in an unfolded state, a part of the locking pin extends into the mounting groove under the action of the driving spring so as to limit the relative rotation of the first combining part and the second combining part.

Preferably, one of the first coupling portion and the second coupling portion is provided with a guide groove disposed around the pivot, and the other is provided with a guide post extending into the guide groove.

Preferably, the angle locking mechanism includes:

a lock slot formed in said third engagement portion, said lock slot having a transition region disposed about said pivot axis and one or more radially extending locating regions in communication with said transition region;

and the sliding pin is slidably arranged on the second joint part and can respectively enter each positioning area through the transition area and correspondingly maintain the angle between the second joint part and the third joint part.

The folding of through seat frame among the technical scheme that this application discloses can realize the whole orderly structure of folding up back of bassinet, convenience of customers' transport and deposit. Meanwhile, the unfolding action of the seat frame can be carried out relative to the frame, so that compared with the related art, the seat frame can realize more excellent three-dimensional space performance, and provides more comfortable riding space for passengers such as children. User experience can be improved according to user's user demand under folding up and the expansion two kinds of states, user's viscidity has been improved greatly, does benefit to and improves product competitiveness.

Drawings

FIG. 1 is a schematic view of a stroller with a foldable seat according to an embodiment;

FIG. 2 is a side schematic view of the wagon of FIG. 1;

FIG. 3 is a schematic view of the seat frame of FIG. 1;

FIG. 4 is a schematic view of the seat frame shown in FIG. 1 being folded;

FIG. 5 is an exploded view of the seat frame of FIG. 1;

FIG. 6 is an enlarged view of the joint of FIG. 5;

FIG. 7 is an exploded view of the seat frame of FIG. 1 from another perspective;

FIG. 8 is an enlarged view of the joint of FIG. 7;

FIG. 9 is a schematic view of the stroller shown in FIG. 1 showing the seat frame unfolded after folding;

fig. 10 is a schematic view of the stroller and seat frame of fig. 1 shown folded.

The reference numerals in the figures are illustrated as follows:

1. a seat frame; 11. a connecting member; 111. a plug; 12. a front frame; 13. a rear frame; 14. a protrusion; 15. a handle bar; 151. an operating member; 16. a ceiling pole; 2. a rotation locking mechanism; 21. mounting grooves; 22. positioning a groove; 23. a locking pin; 24. a drive spring; 25. a guide groove; 26. a guide post; 3. an angle locking mechanism; 31. a transition zone; 32. a positioning area; 33. a slide pin; 331. hollowing out the grooves; 332. a pin body; 34. an elastic member; 35. a chute; 41. a first coupling portion; 42. a second joint part; 43. a third joint part; 51. a primary joint; 52. a front foot bar; 53. a handle bar; 54. a rear foot bar; 55. a linkage rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

With reference to fig. 1 to 4, the present application discloses a stroller with a foldable seat, comprising a frame and a seat frame 1 detachably mounted on the frame, the seat frame 1 comprising a connection member 11 cooperating with the frame, a front frame 12 and a rear frame 13 rotatably cooperating with respect to the connection member 11, and a rotation locking mechanism 2 acting between the front frame 12 and the rear frame 13;

the seat frame 1 has an unfolding state and a folding state, and the front frame 12 and the rear frame 13 are folded and gathered at the position of the connecting piece 11 in the folding state;

the frame also has an unfolding state and a folding state, the frame in the folding state is a flat structure, and the seat frame 1 in the folding state is attached to one side of the flat structure in the thickness direction.

Preceding frame 12 and back frame 13 normal running fit, consequently the change that spatial structure is last can be realized in the rotation each other to the realization is expanded and is folded up, can reduce the volume under the state of folding up, is convenient for carry and deposit, can provide comfortable riding space for passengers such as children under the state of expanding. Accordingly, in order to secure the safety of passengers such as children, the unfolding structure of the seat frame 1 needs to be secured stably, and the design of the rotation locking mechanism 2 can satisfy this requirement. The rotation locking mechanism 2 can meet the use requirement only by ensuring the unfolding state of the seat frame 1 in the technical principle, and as an optimal scheme, the rotation locking mechanism 2 can also lock the folding state to facilitate the carrying process of the baby carriage by a user.

The folding and unfolding of the seat frame 1 can be carried out independently, and can also be carried out along with the deformation of the frame of the baby carriage, and the seat frame can be adjusted according to different use scenes and requirements. When the folding and unfolding of the seat frame 1 are carried out along with the deformation of the frame of the baby carriage, a certain part of the seat frame 1 is linked with at least one part of the frame, thereby realizing synchronous movement.

The seat frame 1 is attached to one side of the flat structure in the thickness direction in the folded state, namely the left side and the right side in the figures 9 and 10, and the design can provide a more finished appearance for the folded baby carrier, so that a user can store and carry the baby carrier conveniently; make things convenient for connecting piece 11's setting simultaneously, avoided the connecting piece 11 of complicated motion to provide more stable connection effect, improve passenger's such as children's security.

The folding of the seat frame 1 in the technical scheme disclosed in the application can realize the integrated folding of the baby carriage and then the tidying structure, thereby facilitating the carrying and storage of users. Meanwhile, since the unfolding operation of the seat frame 1 can be performed with respect to the vehicle body frame, more excellent three-dimensional space expression can be realized compared to the related art, and a more comfortable seating space can be provided for passengers such as children. User experience can be improved according to user's user demand under folding up and the expansion two kinds of states, user's viscidity has been improved greatly, does benefit to and improves product competitiveness.

In the field, a rod is a pipe for reducing weight or for internally arranging a pipeline, but the core purpose of the rod is to transmit torque and support a frame relationship, so that the rod in the field can also have various implementation forms, and hollow pipes and other components capable of supporting multidirectional torque so as to resist tension, compression and bending are facilitated.

Meanwhile, the hinge, the rotational connection, and the like mentioned in the present application are realized by means of a common technical means in the art without being particularly described, for example, the components are stacked in sequence in the axial direction at the position of the pivot shaft and are rotationally matched by the pivot shaft, and the pivot shaft may be a separate component or may be an integral structure with one of the components.

The front frame 12 and the rear frame 13 described in this application refer to the front-rear relationship of the stroller when it is pushed forward, and are not limited to the front-rear relationship in the absolute direction, for example, when the user stands behind the stroller and pulls to drive the stroller backward, the front frame 12 is positioned on the rear side in the traveling direction of the rear frame 13.

The seat frame 1 is supported by the frame and needs to be attached to the frame in a folded state, so that the seat frame 1 is adjusted according to the frame. In one embodiment, the vehicle frame comprises:

a main joint 51 to which the seat frame 1 is attached by a link 11;

a front foot rod 52, the bottom end of which is provided with a front wheel and the top end of which is connected to the main joint 51;

a push rod 53 connected with the main joint 51 and rotationally matched with the front foot rod 52;

a rear foot rod 54, the bottom end of which is provided with a rear wheel and the top end of which is hinged with the push handle rod 53;

two ends of the linkage rod 55 are respectively hinged with the front foot rod 52 and the rear foot rod 54;

the front foot rod 52, the pushing hand rod 53, the rear foot rod 54 and the linkage rod 55 form a deformable four-bar linkage mechanism, in a folding state, the front foot rod 52 and the pushing hand rod 53 are folded at the main joint 51 part and are folded towards one side of the rear foot rod 54 and one side of the linkage rod 55, and the seat frame 1 in the folding state is adjacent to one side of the pushing hand rod 53.

The child is very dynamic, and the child sitting in the seat frame 1 can move continuously due to curiosity and other reasons when the baby carrier is used. In this case, the seat frame 1 receives forces having different magnitudes in a plurality of directions, and these forces tend to move the seat frame 1, and the movement tendency is suppressed by the links 11. Each link is connected to the main joint 51, and the seat frame 1 is attached to the main joint 51 to be stably supported. The stress applied to the seat frame 1 is transmitted to each rod through the main joint 51, so that the integrity of the seat frame 1 and the frame is ensured.

Seat frame 1 not only installs on the frame, more needs the protection of frame, at the implementation in-process, and the frame plays protective frame's effect, and a plurality of member on the frame extend to seat frame 1 periphery to direct action is on seat frame 1 when bassinet striking object, thereby passenger such as protection children. However, in the related art, the protection of the seat frame 1 in the folded state is often neglected, and in one embodiment, the length of the seat frame 1 in the folded state is smaller than the length of the push rod 53.

The skin of children is sensitive, the immune function is not completely developed, and substances which are harmless to adults easily have adverse effects on children, such as dust, paint on the wall surface, unidentified liquid splashed carelessly on the road surface and the like. Therefore, in the present embodiment, the folded protection frame is formed by the push rod 53, and the folded seat frame 1 is protected in the frame of the stroller, so that the seat frame 1 is not affected by external impurities.

In the using process, a user sometimes needs to take out the seat frame 1 independently, so that the user can take care of children conveniently. Referring to fig. 5 to 6, in an embodiment, the main joint 51 is provided with a socket, the connecting member 11 in the seat frame 1 is provided with a plug 111 which is matched with the socket, and a plug locking member (not shown) which is matched with the socket and the plug 111 to maintain a relative position is further arranged between the socket and the plug.

The cooperation of plug 111 and socket can convenience of customers 'dismantlement and installation seat frame 1, can provide the guide for being connected of seat frame 1 and frame simultaneously, standardizes the installation in the time of improving the installation effectiveness, avoids for the connection failure that the incorrect mounting leads to children's unnecessary injury.

From the above description, it can be concluded that when the seat frame 1 is mounted on the frame, both the support and the stabilization of the seat frame 1 are achieved by the connecting pieces 11, and therefore the stability of the connecting pieces 11 determines the stability of the seat frame 1. In one embodiment, the connecting member 11, the front frame 12 and the rear frame 13 of the seat frame 1 have respective joints, and the joints of the three are sequentially abutted and pivotally engaged.

The joint portion may be designed in various shapes as long as the rotation process is not affected. In the embodiment shown in the figures, the joint part is a circular turntable, and the circular turntable has the advantages over other structures that the interference with other parts is avoided in the rotating process, and the arrangement of other parts is convenient. The pivotal engagement is advantageous in that the pivotal engagement enables the suppression of non-rotational directional force actuation, thereby improving the stability of the link 11.

In one embodiment, two connecting members 11 are disposed on both sides of the frame, and the front frame 12 and the rear frame 13 are U-shaped, and two end portions of the U-shape are respectively engaged with one of the connecting members 11.

The connection at both ends is preferred in view of the reduced number of components, and in some large strollers, a design with more than two connecting members 11 may be used when the seat frame 1 is heavy.

The mounting effect of the connecting element 11 requires the cooperation of the joint, which in one embodiment comprises:

a first combining part 41 fixed with the front frame 12, a second combining part 42 fixed with the rear frame 13, and a third combining part 43 fixed with the connecting piece 11, wherein the second combining part 42 is in the middle, and the other two combining parts are respectively arranged at two opposite sides of the second combining part 42;

between the first engaging portion 41 and the second engaging portion 42 that the rotation lock mechanism 2 acts on;

an angle locking mechanism 3 for maintaining the relative angle between the second joint portion 42 and the third joint portion 43 is further provided between them.

The third coupling portion 43 is fixed to the link 11, and corresponds to a stator that is rotationally engaged, and the first coupling portion 41 and the second coupling portion 42 are rotated relative to the third coupling portion 43, and corresponds to a stator rotor that is rotationally engaged, so that the angle lock mechanism 3 is set between the second coupling portion 42 and the third coupling portion 43, and the state of the seat frame 1 can be effectively locked.

The angle locking mechanism 3 can ensure the unfolding and folding of the seat frame 1, and the relative angle between the folded seat frame 1 and the frame needs to be adjusted by the rotation locking mechanism 2, referring to fig. 5 to 8, in an embodiment, the rotation locking mechanism 2 includes:

a mounting groove 21 opened on one of the first combining portion 41 and the second combining portion 42;

a positioning groove 22 opened on the other of the first combining portion 41 and the second combining portion 42;

a locking pin 23 located in the mounting groove 21 and movable along the axis of the pivot;

a driving spring 24 pressed between the mounting groove 21 and the locking pin 23;

in the unfolded state of the seat frame 1, a part of the locking pin 23 extends into the mounting groove 21 under the action of the driving spring 24 to limit the relative rotation of the first combining part 41 and the second combining part 42.

The locking pin 23 is slidably mounted in the mounting groove 21 and can be extended out of the mounting groove 21 by the driving spring 24. The first coupling portion 41 and the second coupling portion 42 are close to each other, and when the positioning groove 22 does not rotate with respect to the mounting groove 21, the mounting groove 21 is closed, and the locking pin 23 cannot protrude out of the mounting groove 21 and is received in the mounting groove 21. When the first combining part 41 and the second combining part 42 are rotated to each other until the mounting groove 21 and the positioning groove 22 are aligned with each other, the mounting groove 21 is opened, and the locking pin 23 can protrude out of the mounting groove 21 into the positioning groove 22, thereby achieving locking of the first combining part 41 and the second combining part 42. In the unlocking process, a structure can be arranged to drive the locking pin 23 to retreat to withdraw from the positioning groove 22, in order to save parts and improve the compactness of the rotary locking mechanism 2, in an embodiment, the head part of the locking pin 23 is arranged to be a hemispherical surface, the positioning groove 22 is arranged to be a concave surface matched with the hemispherical surface, and when the first combining part 41 and the second combining part 42 are driven to rotate mutually by force, the concave surface of the positioning groove 22 can drive the hemispherical surface of the locking pin 23 to withdraw from the positioning groove 22, so that the unlocking is realized. The specific unlocking moment can be adjusted through the specific arc arrangement of the concave surface and the hemispherical surface.

Whether the locking pin 23 can be accurately inserted into the positioning groove 22 requires alignment of the positioning groove 22 and the mounting groove 21, and therefore the fitting relationship of the first engaging portion 41 and the second engaging portion 42 needs to be precise. However, during the use of the stroller, the seat frame 1 is a stressed component, and may be deformed to change the fitting relationship between the first coupling portion 41 and the second coupling portion 42. In an embodiment, one of the first coupling portion 41 and the second coupling portion 42 is provided with a guide groove 25 arranged around the pivot, and the other is provided with a guide post 26 protruding into the guide groove 25.

The guide groove 25 is opened around the pivot, and the guide post 26 moves in the guide groove 25 along with the rotation of the first combining portion 41 or the second combining portion 42, so that the positional relationship between the first combining portion 41 and the second combining portion 42 is limited, the matching accuracy of the first combining portion 41 and the second combining portion 42 is improved, and the working stability of the rotation locking mechanism 2 is improved.

The rotation lock mechanism 2 and the angle lock mechanism 3 are actually accommodated in the fitting spaces of the first joint portion 41, the second joint portion 42, and the third joint portion 43, and are compact in structure and less prone to hand pinching. In one embodiment, the angle locking mechanism 3 includes:

a locking groove opening in the third coupling portion 43, the locking groove being provided with a transition zone 31 arranged about the pivot axis and one or more radially extending positioning zones 32 communicating with the transition zone 31;

a sliding pin 33 slidably mounted on the second coupling portion 42, the sliding pin 33 being capable of entering each positioning area 32 via the transition area 31 and correspondingly maintaining the angle between the second coupling portion 42 and the third coupling portion 43.

The sliding pin 33 is slidably mounted on the second coupling portion 42, in the embodiment shown in the figure, a hollow-out groove 331 is formed in the sliding pin 33, and a pivot is accommodated in the hollow-out groove 331, so that secondary sliding limit of the sliding pin 33 is realized, and the sliding precision of the sliding pin 33 is improved. The sliding pin 33 is driven by the elastic member 34 to move the pin body 332 into the positioning area 32, so as to prevent the third engaging portion 43 and the second engaging portion 42 from rotating relative to each other, and when an external force drives the sliding pin 33 to move along the sliding slot 35 against the elastic force of the elastic member 34, the pin body 332 is out of position to enter the transition area 31, so as to release the mutual rotation of the third engaging portion 43 and the second engaging portion 42. Specifically, in the implementation of the driving, the sliding pin 33 may be driven by providing a traction cable (not shown) connected to the sliding pin 33, the traction force of the traction cable may be implemented by providing a driving member, such as a button, a slider, etc., and the driving member may be provided at a position where the user can easily operate, such as the protruding portion 14 of the seat frame 1, such as the push lever 53, the main joint 51, etc.

The embodiment of the figure also discloses handle rods 15 arranged at two ends of the U-shaped opening of the front frame 12, the handle rods 15 can be understood as U-shaped, two ends of the U-shaped opening are inserted into the first combining part 41, a handle interface matched with the handle rods 15 is arranged on the first combining part 41, a handle inserting joint used for matching the handle interface is arranged on the handle rods 15, and an operating part 151 used for disconnecting the two is arranged on the plug 111.

The embodiment in the figure also discloses a ceiling rod 16 arranged on the seat frame 1, and the ceiling rod 16 is hinged on the rear frame 13 and can rotate relative to the seat frame 1, so that flexible ceiling folding and unfolding are driven.

With reference to fig. 1 to 10, the folding and unfolding process of the buggy is explained below with specific components:

when a user needs to fold the frame and the seat frame 1, the frame can be firstly folded, after the frame is folded, the pushing rod 53 and the front foot rod 52 are respectively attached to two sides of the rear foot rod 54, in this embodiment, the seat frame 1 is independently folded with the frame, the user forcibly draws the front frame 12 and the rear frame 13 together, and the positioning groove 22 in the rotary locking mechanism 2 drives the positioning pin to withdraw, so that the front frame 12 and the rear frame 13 are drawn together, and the folding is completed. The folding process is simple and convenient.

The unfolding process can be operated reversely, and is not described again, in the unfolding state of the baby carrier, a user can adjust the pitching degree of the seat frame 1 relative to the frame through the angle locking mechanism 3, before the adjustment starts, the user drives the sliding pin 33 to exit from the positioning area 32 through components such as a traction cable and the like, at the moment, the seat frame 1 can be adjusted relative to the frame, after the adjustment is in place, the traction cable is released, the sliding pin 33 enters the positioning area 32 under the action of the elastic piece 34, the position relation of the seat frame 1 and the frame is locked, and the adjustment is finished.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The baby carriage with the foldable seat comprises a frame and a seat frame which is detachably arranged on the frame, and is characterized in that the seat frame comprises a connecting piece matched with the frame, a front frame and a rear frame which are matched with each other in a rotating way relative to the connecting piece, and a rotating locking mechanism acting between the front frame and the rear frame;

the seat frame has an unfolding state and a folding state, and the front frame and the rear frame are folded and gathered at the connecting piece part in the folding state;

the frame also has an unfolding state and a folding state, the frame in the folding state is of a flat structure, and the seat frame in the folding state is attached to one side of the flat structure in the thickness direction.

2. A stroller according to claim 1, wherein said frame comprises:

the seat frame is arranged on the main joint through the connecting piece;

the bottom end of the front foot rod is provided with a front wheel, and the top end of the front foot rod is connected to the main joint;

the push handle rod is connected with the main joint and is in rotating fit with the front foot rod;

the bottom end of the rear foot rod is provided with a rear wheel, and the top end of the rear foot rod is hinged with the push handle rod;

the two ends of the linkage rod are respectively hinged with the front foot rod and the rear foot rod;

the front foot rod, the hand pushing rod, the rear foot rod and the linkage rod form a deformable four-bar mechanism, the front foot rod and the hand pushing rod are folded at the main joint part and are folded towards one sides of the rear foot rod and the linkage rod under a folding state, and the seat frame under the folding state is adjacent to one side of the hand pushing rod.

3. A stroller according to claim 2, wherein the length of the seat frame in the collapsed state is less than the length of the push rod.

4. A stroller according to claim 2, wherein a socket is mounted on the primary joint, the connector in the seat frame has a plug for engaging the socket, and a plug-in locking member is provided between the socket and the plug for maintaining the relative positions.

5. A stroller according to claim 1, wherein the seat frame has respective engagement portions for engagement by the connecting member, the front frame and the rear frame, the engagement portions being in turn adapted to abut and pivot together.

6. A stroller according to claim 1, wherein two of said connecting members are disposed on both sides of said frame, said front frame and said rear frame are U-shaped, and two end portions of the U-shape are respectively engaged with one of said connecting members.

7. A stroller according to claim 5, wherein said joint comprises:

the first combination part is fixed with the front frame, the second combination part is fixed with the rear frame, and the third combination part is fixed with the connecting piece, wherein the second combination part is arranged in the middle, and the other two combination parts are respectively arranged on two opposite sides of the second combination part;

the first combining part and the second combining part which are acted by the rotation locking mechanism;

an angle locking mechanism for keeping the relative angle of the second combining part and the third combining part is further arranged between the second combining part and the third combining part.

8. A stroller according to claim 7, wherein said rotational lock mechanism comprises:

the mounting groove is formed in one of the first combining part and the second combining part;

a positioning groove formed in the other of the first combining portion and the second combining portion;

a locking pin located in the mounting groove and movable along the axis of the pivot;

the driving spring is pressed between the mounting groove and the locking pin;

when the seat frame is in an unfolded state, a part of the locking pin extends into the mounting groove under the action of the driving spring so as to limit the relative rotation of the first combining part and the second combining part.

9. A stroller according to claim 7, wherein one of said first and second coupling portions is provided with a guide slot disposed about said pivot axis, and the other is provided with a guide post extending into said guide slot.

10. A stroller according to claim 7, wherein said angular locking mechanism comprises:

a lock slot formed in said third engagement portion, said lock slot having a transition region disposed about said pivot axis and one or more radially extending locating regions in communication with said transition region;

and the sliding pin is slidably arranged on the second joint part and can respectively enter each positioning area through the transition area and correspondingly maintain the angle between the second joint part and the third joint part.

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