CN216915979U - Baby carriage joint and baby carriage with same - Google Patents

Abstract

The utility model discloses a baby carriage joint and a baby carriage with the joint, wherein the baby carriage joint comprises a first pivot joint part, a linkage part, a second pivot joint part and a third pivot joint part, wherein the linkage part, the second pivot joint part and the third pivot joint part are respectively pivoted at different positions of the first pivot joint part; the second pivoting piece is provided with a first transmission piece, the third pivoting piece is provided with a second transmission piece, and the first transmission piece and the second transmission piece are respectively inserted into the first long hole and the second long hole in a relatively movable manner; when the upper side of the second pivoting piece is rotated backwards and downwards, the first transmission piece moves along the first long hole to drive the linkage piece to rotate; and then the second transmission piece is matched with the second long hole to drive the third pivoting piece to rotate, so that the joint of the baby carriage is folded. Therefore, the joint of the baby carriage and the folding of the baby carriage are very easy and effortless.

Description

Baby carriage joint and baby carriage with same

Technical Field

The utility model relates to the field of infant products, in particular to a joint and a baby carriage with the joint.

Background

As birth policies change, children are getting more and more, and the use of strollers is becoming more widespread. For a common baby carriage, the baby carriage can be switched between an unfolding state and a folding state, so that the baby carriage can be folded when not used, and therefore, the baby carriage is convenient to carry upstairs and downstairs and to go in and out of an elevator, and even can be placed in a trunk of a car and brought into a cabin.

The stroller generally includes a plurality of pivotally connected components, any two or more pivotally connected components form a joint, and for folding of the stroller, the smoothness of mutual rotation of the components of the joint during the folding process is an important factor affecting the folding of the stroller, and the mutual rotation of the components of the joint during the folding process is very comfortable, so that the folding operation of the stroller is very easy and not laborious, and conversely, the mutual rotation of the components of the joint during the folding process is very uncomfortable, so that the folding operation of the stroller is very laborious.

However, the current situation is that mothers or old people generally take care of children, and if the folding operation of the stroller is particularly laborious, the stroller is a burden for the old people.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a baby carriage joint and a baby carriage with the joint, which are easy to fold and operate and are easy and labor-saving.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a baby carriage joint can be converted between an unfolding state and a folding state and comprises a first pivoting piece, a linkage piece, a second pivoting piece and a third pivoting piece, wherein the linkage piece, the second pivoting piece and the third pivoting piece are respectively pivoted at different positions of the first pivoting piece, and the linkage piece is further provided with a first long hole and a second long hole; the second pivoting piece is provided with a first transmission piece which can be inserted into the first long hole in a relatively movable manner; and a second transmission piece is arranged on the third pivoting piece and can be inserted into the second long hole in a relatively movable manner.

The baby carriage joint is characterized in that a first positioning piece is arranged on one side, facing the first pivot piece, of the second pivot piece, a second positioning piece is arranged on one side, facing the second pivot piece, of the first pivot piece, and when the baby carriage joint is in an unfolded state, the first positioning piece and the second positioning piece are respectively located on the upper side and the lower side of the rear side of the third pivot piece.

The baby carriage joint further comprises a rotating piece, the first pivoting piece and the second pivoting piece are respectively pivoted at different positions of the rotating piece, and in the relative rotation process of the second pivoting piece and the first pivoting piece, the rotating piece can be driven by the second pivoting piece to rotate towards the direction outside the first pivoting piece; and the rotating piece is set to be in a state that one end of the rotating piece facing the outer side of the first pivoting piece is always kept not to be separated from the second pivoting piece and the other end corresponding to the end is always kept not to be separated from the first pivoting piece in the relative rotation process of the second pivoting piece and the first pivoting piece.

The baby carriage joint further comprises a driving piece, the rotating piece and the driving piece are respectively arranged on the opposite sides of the first pivoting piece and the second pivoting piece, one side of the driving piece is pivoted with the second pivoting piece through a fourth pivot, and the other side of the driving piece is pivoted with the rotating piece.

The rotating piece and the first pivoting piece are respectively provided with a fitting piece and an arc hole which can be matched with each other, and the fitting piece can be inserted into the arc hole in a relatively movable manner.

The matching piece is also connected with the other side of the driving piece, and the matching piece is pivoted with the rotating piece and the driving piece; or, in the other side of the driving piece and the rotating piece, the matching piece is pivoted with at least one of the driving piece and the rotating piece; preferably, the first pivot member includes a base and a fixing member fixedly connected to the base, the fixing member is located between the base and the second pivot member, and an accommodating gap is provided between the fixing member and an opposite side of the base, when the stroller joint is in the unfolded state, the rotating piece is at least partially rotatably located in the gap relative to the first pivot member; the arc-shaped hole is formed in the fixed piece; the matching piece is convexly arranged on one side of the rotating piece facing the second pivoting piece, a pivoting hole is formed in the other side of the driving piece and used for pivoting the matching piece, and one side of the matching piece facing the second pivoting piece penetrates through the pivoting hole and then is inserted into the arc-shaped hole.

The baby carriage joint is also provided with a locking mechanism capable of locking the baby carriage joint in an unfolded state, the locking mechanism comprises a button and a locking piece, the button is connected with one side of the first pivoting piece, which is far away from the second pivoting piece, in a seesaw manner, the locking piece is connected with the first pivoting piece in a relatively movable manner, and one side of the locking piece is pivoted with one side of the button; an elastic reset piece is arranged between the other side of the button and the first pivoting piece; the second pivoting piece is provided with a corresponding locking hole; under the action of the elastic reset piece, one side of the button drives the locking piece to move towards the second pivot piece, and the other side of the locking piece is inserted into the locking hole; preferably, one side of the first pivot part 1 departing from the second pivot part 3 is provided with a holding groove, the button is arranged in the holding groove, namely the button is arranged in the holding groove in a see-saw manner, the holding groove is provided with a via hole towards the side wall of the second pivot part at a position corresponding to the locking hole, and the locking part can move along the via hole.

The second pivoting piece and the third pivoting piece are respectively pivoted with the first pivoting piece through a first pivot and a second pivot, when the baby carriage joint is in an unfolded state, the first transmission piece is located below the second pivoting piece, and the second transmission piece is located on the rear side of the second pivot.

A baby carriage comprises the baby carriage joint.

The baby carriage further comprises a carriage hand, a front leg and a rear leg, in the embodiment, the lower end of the carriage hand is relatively and fixedly connected with a first pivot piece in the joint of the baby carriage, the rear end of the front leg is relatively and fixedly connected with a second pivot piece in the joint of the baby carriage, and the front end of the rear leg is relatively and fixedly connected with a third pivot piece in the joint of the baby carriage; or the first pivot piece, the second pivot piece and the third pivot piece are respectively integrally formed with the handle, the front leg and the rear leg of the baby carriage; preferably, the front lower part of the front foot is connected with a front wheel, and the rear lower part of the rear foot is connected with a rear wheel.

The utility model has the beneficial effects that:

1. the joint of the baby carriage has the advantages that the relative rotation of the first pivot joint part, the second pivot joint part and the third pivot joint part is smoother, so that the joint of the baby carriage is easy to fold and easy to use;

2. the arrangement of the rotating piece can avoid the generation of hand clamping gaps in the folding and unfolding processes of the joints of the foldable baby carriage, thereby avoiding personal injury.

Drawings

FIG. 1 is a schematic view of a stroller according to the present invention with the joint at one of its angles in a deployed position;

FIG. 2 is a schematic view of another angle of the stroller joint of the present invention in a deployed state;

FIG. 3 is an exploded view of the stroller joint according to the first embodiment of the present invention;

FIG. 4 is an exploded view of the stroller joint of the present invention;

FIG. 5 is an enlarged view of one of the angles of the articulating portion of the stroller assembly of the present invention;

FIG. 6 is an enlarged view of another angle of the articulating portion of the stroller of the present invention;

fig. 7 is a schematic view of one of the angles of the stroller joint folding process according to the present invention;

fig. 8 is a schematic view of another angle during the process of folding the joints of the stroller according to the present invention;

FIG. 9 is an enlarged view of a portion of the stroller joint during collapsing of the stroller of the present invention;

fig. 10 is a schematic view of a stroller according to the present invention with the joint folded at one of its angles;

fig. 11 is a schematic view of another angle of the stroller according to the present invention after the joints are folded;

FIG. 12 is an enlarged view of the stroller joint of the present invention in a collapsed position with the rear sub-assembly;

FIG. 13 is an enlarged cross-sectional view of the stroller joint of the present invention in a locked position according to direction A-A of FIG. 1;

FIG. 14 is an enlarged cross-sectional view taken along line A-A of FIG. 1 illustrating the stroller joint of the present invention in an unlocked position;

FIG. 15 is a schematic view of the stroller of the present invention in a deployed position;

fig. 16 is a schematic view illustrating a collapsing process of the stroller according to the present invention;

fig. 17 is a schematic view of the stroller of the present invention after being folded.

Detailed Description

As shown in fig. 1 to 6, the joints of the stroller of the present invention can be switched between an unfolded state and a folded state, the joints of the stroller include a first pivot member 1, a linkage member 2, a second pivot member 3, and a third pivot member 4, the linkage member 2, the second pivot member 2, and the third pivot member 4 are respectively pivoted to different positions of the first pivot member 1, and the linkage member 2 is further provided with a first long hole 21 and a second long hole 22; the second pivot 3 is provided with a first transmission piece 31, and the first transmission piece 31 is inserted into the first long hole 21 in a relatively movable manner; the third pivot element 4 is provided with a second transmission element 41, and the second transmission element 41 is inserted into the second long hole 22 in a relatively movable manner.

When the second pivot 3 is rotated backward and downward, the first transmission member 31 will not only rotate with the second pivot 3, but also move along the first long hole 21, and thereby drive the linkage 2 to rotate forward; when the linkage member 2 rotates in this way, the second transmission member 41 is engaged with the second slot 22 to drive the rear side of the third pivot member 4 to rotate forward, so that the front side of the third pivot member 4 rotates backward, and at the same time, the second pivot shaft 42 moves along the second slot 22 (as shown in fig. 9). Thus, the second pivot member 3 and the third pivot member 4 both move toward the first pivot member 1 (as shown in fig. 7 and 8) until the second pivot member 3 and the third pivot member 4 can no longer rotate relative to the first pivot member 1, and at this time, the second pivot member 3 and the third pivot member 4 are both relatively close to the first pivot member 1, so that the stroller joint of the present invention is folded (as shown in fig. 10, 11 and 12). Similarly, when the third pivot 4 is rotated backward (i.e. toward the first pivot 1) in the direction of the first pivot 1, the upper side of the second pivot 3 can also be linked to rotate in the direction toward the first pivot 1. Thus, the joint of the stroller of the present invention is configured such that the second pivot member 3 and the third pivot member 4 can rotate together towards the first pivot member 1 as long as the second pivot member 3 or the third pivot member 4 is rotated, so as to fold the joint of the stroller of the present invention. That is to say, the joints of the stroller of the present invention are arranged such that the first pivot member, the second pivot member, and the third pivot member rotate relatively smoothly, thereby facilitating the folding of the joints of the stroller of the present invention.

When the joints of the baby carriage are unfolded from the folded state, the second pivoting member 3 or the third pivoting member 4 is directly rotated reversely relative to the first pivoting member 1, so that the joints of the baby carriage are unfolded easily and easily.

Preferably, the second pivot member 3 and the third pivot member 4 are respectively pivoted to the first pivot member 1 through a first pivot shaft 32 (as shown in fig. 6, and 30 in fig. 4 is a pivot hole 30 for the second pivot member 3 to pivot the first pivot shaft 32), and a second pivot shaft 42, when the stroller joint is in the unfolded state, the first transmission member 31 is located below the second pivot member 3, and the second transmission member 41 is located behind the second pivot shaft 42. The second pivot 3 rotates relative to the first pivot 1 about the first pivot 32, and the third pivot 4 rotates relative to the first pivot 1 about the second pivot 42. With such an arrangement, when the stroller joint is folded, the first transmission member 31 can drive the linkage member 2 to rotate by a larger angle relative to the first pivot member 1, so that not only the second pivot member 3 can be closer to the first pivot member 1, but also the linkage member 2 can drive the third pivot member 4 to rotate by a larger angle relative to the first pivot member 1 through the cooperation of the second elongated hole 22 and the second transmission member 41, i.e., the third pivot member 4 is closer to the first pivot member 1, so that the folded joint has a relatively small volume.

The link 2 is pivoted to the first pivot 1 by a third pivot 23, and the first long hole 21, the second long hole 22 and the third pivot 23 are respectively disposed at different positions.

In this embodiment, it is preferable that a first positioning element 33 is disposed on a side of the second pivot element 3 facing the first pivot element 1, a second positioning element 11 is disposed on a side of the first pivot element 1 facing the second pivot element 3, and when the stroller joint is in the unfolded state, the first positioning element 33 and the second positioning element 11 are respectively disposed on upper and lower sides of a rear side of the third pivot element 4 (as shown in fig. 5). So set up, when the perambulator joint is in the expansion state, can avoid better third pivot joint 4 rocks, and third pivot joint 4 also can not be rotatory relative first pivot joint 1 to guarantee the stability of perambulator joint under the expansion state. During the process of folding the stroller joint, when the second pivot member 3 rotates relative to the first pivot member 1, the first positioning member 33 moves away along with the rotation of the second pivot member 3 without interfering with the rotation of the third pivot member 4 (as shown in fig. 9 and 12).

In this embodiment, the stroller joint further includes a rotating piece 5, the first pivot member 1 and the second pivot member 3 are respectively pivoted to different positions of the rotating piece 5, and during the relative rotation of the second pivot member 3 and the first pivot member 1, the rotating piece 5 can be driven by the second pivot member 3 to rotate in a direction outside the first pivot member 1; and the rotating piece 5 is set in such a way that in the relative rotation process of the second pivoting piece 3 and the first pivoting piece 1, one end 52 of the rotating piece 5 facing the outer side of the first pivoting piece 1 is always kept in a state of not being separated from the second pivoting piece 3, and the other end 53 corresponding to the end is always kept in a state of not being separated from the first pivoting piece 1.

The stroller joint further comprises a driving member 6, the rotating piece 5 and the driving member 6 are respectively arranged on the opposite sides of the first pivoting member 1 and the second pivoting member 3, one side of the driving member 6 is pivoted with the second pivoting member 3 through a fourth pivot 61, and the other side of the driving member is pivoted with the rotating piece 5, so that the purpose of pivoting the second pivoting member 3 and the rotating piece 5 is achieved. With such an arrangement, when the second pivot member 3 rotates relative to the first pivot member 1, the rotating piece 5 not only rotates relative to the first pivot member 1 together with the second pivot member 3, but also the rotating piece 5 simultaneously rotates relative to the second pivot member 3 around the fourth pivot 61, so that when the first pivot member 1 rotates relative to the first pivot member 1, the other side of the rotating piece 5 thus moving drives the rotating piece 5 to rotate in a direction out of the first pivot member 1.

Because in the process of folding the first joint, a gap is generated between the second pivoting member 3 and the first pivoting member 1 along with the relative rotation of the second pivoting member 3 and the first pivoting member 1, and the gap may cause the possibility of hand clamping injury, the present invention adopts the rotating sheet 5 as above, so that in the process of relative rotation of the second pivoting member 3 and the first pivoting member 1, the rotating sheet 5 rotates outward of the first pivoting member 1, and the two ends of the rotating sheet 5 respectively keep a state of not being separated from the first pivoting member 1 and the second pivoting member 3, so that the rotating sheet 5 fills the gap (as shown in fig. 8 and 11), thus avoiding the possibility of hand clamping injury due to the gap.

In this embodiment, the rotating plate 5 is configured as a fan shape, and during the relative rotation process between the second pivoting member 3 and the first pivoting member 1, one side 52 of the fan-shaped rotating plate 5 facing the outside of the first pivoting member 1 is always kept in a state of not being separated from the second pivoting member 3, and the corresponding other side 53 is always kept in a state of not being separated from the first pivoting member 1. The rotating pieces 5 are arranged in a fan shape, so that the function of filling the gap between the clamping hands can be achieved, and the size can be minimized on the basis of achieving the function, so that the manufacturing cost is saved.

In this embodiment, the rotating plate 5 and the first pivoting member 1 are respectively provided with a matching member 51 and an arc hole 12, which are capable of cooperating with each other, and the matching member 51 is relatively movably inserted into the arc hole 12, so that during the rotation of the rotating plate 5 relative to the first pivoting member 1, the matching member 51 moves along the arc hole 12. With the arrangement, the rotating piece 5 and the first pivot joint 1 can be guided to rotate, so that the first pivot joint 1 can rotate more smoothly, the rotating piece 5 can be prevented from rotating relative to the first pivot joint 1 without limitation, and a hand clamping gap is prevented from being generated between the rotating piece 5 rotating without limitation and the first pivot joint 1.

Preferably, the fitting piece 51 is further connected to the other side of the driving piece 6, and the fitting piece 51 is pivotally connected to both the rotating piece 5 and the driving piece 6; or, the other side of the driving member 6 and the rotating piece 5 are both provided with the engaging member 51 pivotally connected to at least one of them. So set up, not only realize the purpose of driving piece 6 opposite side and the pin joint of revolving fragment 5, realized the function that above-mentioned fitting piece 51 and arc hole 12 mutually supported moreover, that is to say, one sets up and realizes two functions to not only make the equipment of relevant subassembly more convenient, save the cost moreover, also make the structure compacter.

In this embodiment, the engaging element 51 is protruded from one side of the rotating piece 5 facing the second pivoting member 3, and the other side of the driving member 6 is provided with a pivoting hole 62 for pivoting the engaging element 51.

The first pivot member 1 comprises a base 13 and a fixing member 14 fixedly connected to the base 13, the fixing member 14 is located between the base 13 and the second pivot member 3, and an accommodating gap 15 is provided between the fixing member 14 and the opposite side of the base 13, and when the stroller joint is in the unfolded state, the rotating piece 5 is at least partially rotatably located in the gap relative to the first pivot member 1; the arc-shaped hole 12 is arranged on the fixing piece 14; the engaging member 51 is inserted into the arc-shaped hole 12 through the pivot hole 62 toward the side of the second pivot member 3. With the arrangement, the rotation of the rotating sheet 5 towards the outside during joint folding is not affected, and the function of mutually matching the matching piece 51 and the arc-shaped hole 12 is realized.

The other side of the driving member 6 also extends into the accommodating gap 15 and is pivoted with the rotating piece 5. With the arrangement, the height difference between the surface of the base 13 and the surface of the fixing piece 14 facing to one side of the second pivot piece 3 is fully utilized, so that the installation space is saved, the overall size of the joint of the baby carriage can be smaller, and the assembly is more convenient. In other embodiments, the driving member 6 may be disposed between the second pivot member 3 and the first pivot member 1.

The rotating piece 5 is pivotally connected to the fixing member 14 through a fifth pivot 50, the fifth pivot 50 and the matching member 51 are disposed at different positions, and when the rotating piece 5 rotates relative to the first pivoting member 1, the rotating piece rotates around the fifth pivot 50 as a rotation axis. The rotating plate 5 may be pivotally connected to the base 13 via a fifth pivot 50.

In this embodiment, the first pivot element 1 further includes a second fixing element 18 fixedly connected to the base 13, and the second fixing element 18, the fixing element 14, and the second pivot element 3 are all connected to the same side of the base 13; and a gap is also arranged between the second fixing piece 18 and the base 13. After the first pivot member 1, the second pivot member 3 and the third pivot member 4 are pivoted with each other, the portions of the linkage member 2 and the third pivot member 4 pivoted with the linkage member are located between the base 13 of the first pivot member 1 and the second pivot member 3, the second fixing member 18. With such an arrangement, the interference of foreign objects with the mutual rotation movement of the linkage member 2, the second pivot member 3 and the third pivot member 4 can be avoided.

In this embodiment, the stroller joint is further provided with a locking mechanism capable of locking the stroller joint in the unfolded state. In this embodiment, the locking mechanism includes a button 71 and a locking member 72, the button 71 is pivotally connected to the first pivot member 1 at a side away from the second pivot member 3 in a see-saw manner, the locking member 72 is connected to the first pivot member 1 in a relatively movable manner, and one side of the locking member 72 is pivotally connected to one side of the button 71; an elastic reset piece 73 is arranged between the other side of the button 71 and the first pivoting piece 1; the second pivot part 3 is provided with a corresponding locking hole 34; under the action of the elastic reset element 73, one side of the button 71 drives the locking element 72 to move towards the second pivot element 3, and the other side of the locking element 72 is inserted into the locking hole 34, so that the second pivot element 3 and the first pivot element 1 cannot rotate relatively, and the joint of the present invention is in a deployed state.

When the joint of the present invention is to be folded, the other side of the button 71 can be pressed toward one side of the second pivoting member 3, because of the seesaw principle, one side of the button 71 rotates toward one side away from the second pivoting member 3, so that the locking member 72 is driven to move toward one side away from the second pivoting member 3 to disengage from the locking hole 34, and at this time, the second pivoting member 3 and the first pivoting member 1 can rotate relatively, so that the joint of the present invention can be folded.

When the joint of the stroller is unfolded from the folded state, when the second pivoting member 3 rotates relative to the first pivoting member 1 until the locking hole 34 is aligned with the locking member 72, under the action of the elastic resetting member 73, one side of the locking member 72 automatically extends into the locking hole 34, so that the joint of the stroller is automatically locked in the unfolded state. Therefore, the operation is more convenient.

In this embodiment, a receiving groove 16 is disposed on a side of the first pivoting member 1 away from the second pivoting member 3, the button 71 is disposed in the receiving groove 16, that is, the button 71 is disposed in the receiving groove 16 in a see-saw manner, a through hole 161 is disposed on a side wall of the receiving groove 16 facing the second pivoting member 3 corresponding to the locking hole 34, and the locking member 72 can move along the through hole 161. In this way, it is ensured that not only the locking member 72 can move smoothly, but also one side of the locking member 72 can be accurately snapped into the locking hole 34 when the via hole is aligned with the locking hole 34.

One side of the accommodating groove 16 away from the second pivot member 3 is connected to a blocking cover 17, and an operation hole 171 (shown in fig. 2) is formed in the blocking cover 17 corresponding to the other side of the button 71, so that an operator can conveniently press the button 71 by passing his finger through the operation hole.

The locking mechanism can also be arranged between any two pivoted parts of the joint, and the locking mechanism can also be any other known feasible structure, and the locking mechanism is not the utility model point of the utility model, so that redundant description is not provided herein.

As shown in fig. 15 to 17, the present invention also discloses a stroller comprising the above stroller joint.

The baby carriage further comprises a carriage handle 8, a front leg 9 and a rear leg 10, in this embodiment, the lower end of the carriage handle 8 is relatively fixedly connected with a first pivot piece 1 in a joint of the baby carriage, the rear end of the front leg 9 is relatively fixedly connected with a second pivot piece 3 in the joint of the baby carriage, and the front end of the rear leg 10 is relatively fixedly connected with a third pivot piece 4 in the joint of the baby carriage.

The first pivot member 1, the second pivot member 3 and the third pivot member 4 may be directly and integrally formed with the handle 8, the front leg 9 and the rear leg 10 of the stroller, respectively. Namely, the lower end of the handle 8, the rear end of the front leg 9 and the front end of the rear leg 10 of the baby carriage are respectively provided with the second pivot part 3, the third pivot part 4 and the first pivot part 1.

When the first pivoting piece 1, the second pivoting piece 3 and the third pivoting piece 4 are in the unfolding state, namely the baby carriage is in the unfolding state; when the first pivoting piece 1, the second pivoting piece 3 and the third pivoting piece 4 are in the folding process, the baby carriage is also in the folding process; when the first pivot member 1, the first pivot member 1 and the third pivot member 4 are in the folded state, the stroller is also in the folded state.

The relative rotation of the first pivot joint part, the second pivot joint part and the third pivot joint part is smoother, namely the relative rotation of the handle 8, the front foot 9 and the rear foot 10 of the baby carriage is smoother, so that the folding operation of the joints of the baby carriage is easier and less laborious, and the folding operation of the baby carriage is easier and less laborious; the joints of the baby carriage are very easy to unfold, and the unfolding operation of the baby carriage is easy and effortless; the first pivot part 1 in the joints of the baby carriage can be closer to the second pivot part 3, and the third pivot part 4 is closer to the first pivot part 1, which means that the handle 8, the front leg 9 and the rear leg 10 are closer, so that the folded baby carriage has a relatively small volume and is convenient to carry and store.

The front lower part of the front foot 9 is connected with a front wheel 91, and the rear lower part of the rear foot 10 is connected with a rear wheel 101.

The above orientation is defined for convenience of description and is not intended to limit the orientation, and in the above orientation definition, when the stroller is in the unfolded state, the front wheel 91 is located at the front, the rear wheel 101 is located at the rear, the rider 8 is located at the upper side, and the front wheel 91 and the rear wheel 101 are located at the lower side. It will be appreciated that as the viewing angle changes, the orientation will change correspondingly.

Claims (21)

1. A baby carriage joint can be converted between an unfolding state and a folding state, and is characterized in that: the joint of the baby carriage comprises a first pivot joint piece, a linkage piece, a second pivot joint piece and a third pivot joint piece, wherein the linkage piece, the second pivot joint piece and the third pivot joint piece are respectively pivoted at different positions of the first pivot joint piece, and the linkage piece is also provided with a first long hole and a second long hole; the second pivoting piece is provided with a first transmission piece which can be inserted into the first long hole in a relatively movable manner; and a second transmission piece is arranged on the third pivoting piece and can be inserted into the second long hole in a relatively movable manner.

2. The stroller joint of claim 1, wherein: the baby carriage joint is characterized in that a first positioning piece is arranged on one side, facing the first pivot piece, of the second pivot piece, a second positioning piece is arranged on one side, facing the second pivot piece, of the first pivot piece, and when the baby carriage joint is in an unfolded state, the first positioning piece and the second positioning piece are respectively located on the upper side and the lower side of the rear side of the third pivot piece.

3. A stroller joint according to claim 1 or 2, characterized in that: the rotating piece is driven by the second pivot piece to rotate towards the direction outside the first pivot piece in the relative rotation process of the second pivot piece and the first pivot piece.

4. A stroller joint according to claim 3, characterized in that: the rotating piece is arranged in such a way that in the relative rotation process of the second pivoting piece and the first pivoting piece, one end of the rotating piece, which faces the outer side of the first pivoting piece, is always kept in a state of not being separated from the second pivoting piece, and the other end of the rotating piece, which corresponds to the end, is always kept in a state of not being separated from the first pivoting piece.

5. A stroller joint according to claim 3, characterized in that: the rotating piece and the driving piece are respectively arranged on the opposite sides of the first pivoting piece and the second pivoting piece, one side of the driving piece is pivoted with the second pivoting piece through a fourth pivot, and the other side of the driving piece is pivoted with the rotating piece.

6. The stroller joint of claim 4, wherein: the rotating piece and the driving piece are respectively arranged on the opposite sides of the first pivoting piece and the second pivoting piece, one side of the driving piece is pivoted with the second pivoting piece through a fourth pivot, and the other side of the driving piece is pivoted with the rotating piece.

7. A stroller joint according to claim 3, characterized in that: the rotating piece and the first pivoting piece are respectively provided with a fitting piece and an arc hole which can be matched with each other, and the fitting piece can be inserted into the arc hole in a relatively movable manner.

8. Baby carriage joint according to claim 4 or 5 or 6, characterized in that: the rotating piece and the first pivoting piece are respectively provided with a fitting piece and an arc hole which can be matched with each other, and the fitting piece can be inserted into the arc hole in a relatively movable manner.

9. The stroller joint of claim 7, wherein: the matching piece is also connected with the other side of the driving piece, and the matching piece is pivoted with the rotating piece and the driving piece; or, in the other side of the driving piece and the rotating piece, the matching piece is pivoted with at least one of the driving piece and the rotating piece.

10. The stroller joint of claim 9, wherein: the first pivoting piece comprises a base and a fixing piece fixedly connected to the base, the fixing piece is positioned between the base and the second pivoting piece, an accommodating gap is formed between the fixing piece and the opposite side of the base, and when the baby carriage joint is in an unfolded state, at least part of the rotating piece can be rotatably positioned in the gap relative to the first pivoting piece; the arc-shaped hole is formed in the fixed piece; the matching piece is convexly arranged on one side of the rotating piece facing the second pivoting piece, a pivoting hole is formed in the other side of the driving piece and used for pivoting the matching piece, and one side of the matching piece facing the second pivoting piece penetrates through the pivoting hole and then is inserted into the arc-shaped hole.

11. The stroller joint of claim 8, wherein: the matching piece is also connected with the other side of the driving piece, and the matching piece is pivoted with the rotating piece and the driving piece; or, in the other side of the driving piece and the rotating piece, the matching piece is pivoted with at least one of the driving piece and the rotating piece.

12. The stroller joint of claim 11, wherein: the first pivoting piece comprises a base and a fixing piece fixedly connected to the base, the fixing piece is positioned between the base and the second pivoting piece, an accommodating gap is formed between the fixing piece and the opposite side of the base, and when the baby carriage joint is in an unfolded state, at least part of the rotating piece can be rotatably positioned in the gap relative to the first pivoting piece; the arc-shaped hole is formed in the fixed piece; the matching piece is convexly arranged on one side of the rotating piece, which faces the second pivoting piece, the other side of the driving piece is provided with a pivoting hole for pivoting the matching piece, and one side of the matching piece, which faces the second pivoting piece, penetrates through the pivoting hole and then is inserted into the arc-shaped hole.

13. A stroller joint according to any one of claims 1 to 2, 4 to 7, 9 to 12, characterized in that: the baby carriage joint is also provided with a locking mechanism capable of locking the baby carriage joint in an unfolded state, the locking mechanism comprises a button and a locking piece, the button is connected with one side of the first pivoting piece, which is far away from the second pivoting piece, in a seesaw manner, the locking piece is connected with the first pivoting piece in a relatively movable manner, and one side of the locking piece is pivoted with one side of the button; an elastic reset piece is arranged between the other side of the button and the first pivoting piece; the second pivoting piece is provided with a corresponding locking hole; under the effect of elasticity piece that resets, button one side drives the locking piece and moves towards the direction of second pin joint piece, the locking piece opposite side inserts in the locking hole.

14. The stroller joint of claim 13, wherein: one side that first pin joint spare deviates from second pin joint spare is provided with the holding tank, the button seesaw is arranged in the holding tank, just the holding tank is provided with the via hole towards the lateral wall of second pin joint spare in the position that corresponds the locking hole, the locking piece can along the via hole removes.

15. A stroller joint according to any one of claims 1 to 2, 4 to 7, 9 to 12, 14, characterized in that: the second pivoting piece and the third pivoting piece are respectively pivoted with the first pivoting piece through a first pivot and a second pivot, when the baby carriage joint is in an unfolded state, the first transmission piece is located below the second pivoting piece, and the second transmission piece is located on the rear side of the second pivot.

16. A stroller joint according to claim 3, characterized in that: the second pivoting piece and the third pivoting piece are respectively pivoted with the first pivoting piece through a first pivot and a second pivot, when the baby carriage joint is in an unfolded state, the first transmission piece is located below the second pivoting piece, and the second transmission piece is located on the rear side of the second pivot.

17. The stroller joint of claim 8, wherein: the second pivoting piece and the third pivoting piece are respectively pivoted with the first pivoting piece through a first pivot and a second pivot, when the baby carriage joint is in an unfolded state, the first transmission piece is located below the second pivoting piece, and the second transmission piece is located on the rear side of the second pivot.

18. The stroller joint of claim 13, wherein: the second pivoting piece and the third pivoting piece are respectively pivoted with the first pivoting piece through a first pivot and a second pivot, when the baby carriage joint is in an unfolded state, the first transmission piece is located below the second pivoting piece, and the second transmission piece is located on the rear side of the second pivot.

19. A stroller, characterized in that: comprising a stroller joint according to any of claims 1 to 18.

20. The stroller of claim 19, wherein: the baby carriage comprises a baby carriage joint, a front leg and a rear leg, wherein the lower end of the baby carriage joint is fixedly connected with a first pivot piece in the baby carriage joint, the rear end of the front leg is fixedly connected with a second pivot piece in the baby carriage joint, and the front end of the rear leg is fixedly connected with a third pivot piece in the baby carriage joint; or the first pivot piece, the second pivot piece and the third pivot piece are respectively integrally formed with the handle, the front leg and the rear leg of the baby carriage.

21. The stroller of claim 20, wherein: the front lower part of the front foot is connected with a front wheel, and the rear lower part of the rear foot is connected with a rear wheel.

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