A stroller joint and a stroller provided with the joint

Abstract

This invention discloses a stroller joint and a stroller equipped with the joint. The stroller joint includes a first pivot member, a linkage member pivotally connected to different positions of the first pivot member, a second pivot member, and a third pivot member. The linkage member is further provided with a first elongated hole and a second elongated hole. The second pivot member is provided with a first transmission member, and the third pivot member is provided with a second transmission member. The first and second transmission members are respectively movably inserted into the first and second elongated holes. When the upper side of the second pivot member is rotated backward and downward, the linkage member can be driven to rotate by the movement of the first transmission member along the first elongated hole. Then, through the cooperation of the second transmission member and the second elongated hole, the third pivot member is driven to rotate, thereby closing the stroller joint of this invention. Thus, the stroller joint and the stroller of this invention are very easy and effortless to close.

Description

Technical Field

[0001] This invention relates to the field of infant and toddler products, and more particularly to a joint and a stroller equipped with the joint. Background Technology

[0002] Most strollers are designed to switch between an unfolded and a folded state, so that when not in use, the stroller can be folded up, making it convenient to carry the stroller up and down stairs, in and out of elevators, and even to put in the trunk of a car or bring it into the cabin.

[0003] A stroller typically consists of multiple pivotally connected components. Any two or more pivotally connected components form a joint. When folding a stroller, the smoothness of rotation of the joint components during the folding process is an important factor affecting the stroller's folding. If the joint components rotate smoothly during the folding process, the stroller will be easy to fold and close without much effort. Conversely, if the joint components do not rotate smoothly during the folding process, the stroller will be difficult to fold and close.

[0004] The current situation is that it is usually mothers or the elderly who take care of the children. If the operation of folding and opening the stroller is particularly difficult, it will be a burden for them. Summary of the Invention

[0005] The purpose of this invention is to provide a stroller joint and a stroller equipped with the joint, which makes folding and closing easy and effortless.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A stroller joint that can switch between an unfolded state and a folded state includes a first pivot member, a linkage member, a second pivot member, and a third pivot member. The linkage member, the second pivot member, and the third pivot member are respectively pivotally connected to different positions of the first pivot member. The linkage member is also provided with a first elongated hole and a second elongated hole. The second pivot member is provided with a first transmission member, which can be relatively movably inserted into the first elongated hole. The third pivot member is provided with a second transmission member, which can be relatively movably inserted into the second elongated hole.

[0008] The second pivot member has a first positioning member on the side facing the first pivot member, and the first pivot member has a second positioning member on the side facing the second pivot member. When the stroller joint is in the unfolded state, the first positioning member and the second positioning member are respectively located on the upper and lower sides of the rear side of the third pivot member.

[0009] The stroller joint also includes a rotating piece. The first pivot and the second pivot are pivotally connected to different positions of the rotating piece. During the relative rotation of the second pivot and the first pivot, the rotating piece can be driven by the second pivot to rotate outward from the first pivot. The rotating piece is configured such that during the relative rotation of the second pivot and the first pivot, one end of the rotating piece facing outward from the first pivot always remains in a state of not disengaging from the second pivot, and the other end corresponding to that end always remains in a state of not disengaging from the first pivot.

[0010] The stroller joint also includes a drive component. The rotating plate and the drive component are respectively disposed on opposite sides of the first pivot component and the second pivot component. One side of the drive component is pivotally connected to the second pivot component via a fourth pivot, and the other side is pivotally connected to the rotating plate.

[0011] The rotating plate and the first pivot member are respectively provided with mating parts and arc-shaped holes that can cooperate with each other, and the mating parts can be inserted into the arc-shaped holes relatively movable.

[0012] The mating component is also connected to the other side of the drive component, and the mating component is pivotally connected to both the rotating plate and the drive component; or, the mating component is pivotally connected to at least one of the other side of the drive component and the rotating plate; preferably, the first pivot component includes a base and a fixing component fixedly connected to the base, the fixing component is located between the base and the second pivot component, and a receiving gap is provided between the fixing component and the opposite side of the base, so that when the stroller joint is in the unfolded state, the rotating plate is at least partially rotatably located within the gap relative to the first pivot component; the arc-shaped hole is provided on the fixing component; the mating component is inserted into the arc-shaped hole after passing through the pivot hole on the side facing the second pivot component.

[0013] The stroller joint is also provided with a locking mechanism that can lock the stroller joint in the unfolded state. The locking structure includes a button and a locking member. The button is pivotally connected to the side of the first pivot member away from the second pivot member in a rocker-like manner. The locking member is relatively movable and connected to the first pivot member, and one side of the locking member is pivotally connected to the side of the button. An elastic reset member is provided between the other side of the button and the first pivot member. The second pivot member is provided with a corresponding locking hole. Under the action of the elastic reset member, the button moves the locking member toward the second pivot member, and the other side of the locking member is inserted into the locking hole. Preferably, the side of the first pivot member 1 away from the second pivot member 3 is provided with a receiving groove, and the button is placed in the receiving groove, that is, the button is placed in the receiving groove in a rocker-like manner. The receiving groove is provided with a through hole on the side wall of the second pivot member facing the locking hole, and the locking member can move along the through hole.

[0014] The second pivot member and the third pivot member are pivotally connected to the first pivot member via the first pivot and the second pivot respectively. When the stroller joint is in the unfolded state, the first transmission member is located below the second pivot member, and the second transmission member is located behind the second pivot.

[0015] A stroller, including the aforementioned stroller joint.

[0016] The stroller also includes a handlebar, front feet, and rear feet. In this embodiment, the lower end of the handlebar is fixedly connected to a first pivot member in the stroller joint, the rear end of the front feet is fixedly connected to a second pivot member in the stroller joint, and the front end of the rear feet is fixedly connected to a third pivot member in the stroller joint; or, the first, second, and third pivot members are integrally formed with the handlebar, front feet, and rear feet of the stroller, respectively; preferably, the lower front part of the front feet is connected to a front wheel, and the lower rear part of the rear feet is connected to a rear wheel.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This design of the stroller joint of the present invention makes the relative rotation of the first pivot member, the second pivot member, and the third pivot member smoother, thereby making the folding and closing of the stroller joint of the present invention easier and less strenuous.

[0019] 2. The rotating plate design can prevent hand pinching gaps during the folding and unfolding of the stroller joints, thus avoiding personal injury. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing one angle of the stroller joint of the present invention in its unfolded state;

[0021] Figure 2 This is a schematic diagram of the stroller joint of the present invention in an unfolded state from another angle;

[0022] Figure 3 This is an enlarged exploded view of the joint of the stroller of the present invention. Figure 1 ;

[0023] Figure 4 This is an enlarged exploded view of the joint of the stroller of the present invention. Figure 2 ;

[0024] Figure 5 This is an enlarged schematic diagram of one angle of the joint component of the stroller of the present invention;

[0025] Figure 6 This is an enlarged schematic diagram of the joint components of the stroller of the present invention from another angle;

[0026] Figure 7This is a schematic diagram of one angle during the folding and closing process of the stroller joint of the present invention;

[0027] Figure 8 This is a schematic diagram from another angle during the folding and closing process of the stroller joint of the present invention;

[0028] Figure 9 This is an enlarged schematic diagram of some components of the stroller joint of the present invention during the folding process;

[0029] Figure 10 This is a schematic diagram showing one angle of the stroller joint after it is closed according to the present invention;

[0030] Figure 11 This is a schematic diagram showing another angle of the stroller joint after the present invention is folded.

[0031] Figure 12 This is an enlarged schematic diagram of some components of the stroller joint of the present invention after being folded.

[0032] Figure 13 The stroller joint of the present invention is in the locked state according to Figure 1 Enlarged cross-sectional view along the AA direction;

[0033] Figure 14 The stroller joint of the present invention is in the unlocked state according to Figure 1 Enlarged cross-sectional view along the AA direction;

[0034] Figure 15 This is a schematic diagram of the stroller of the present invention in its unfolded state;

[0035] Figure 16 This is a schematic diagram illustrating the folding process of the stroller according to the present invention;

[0036] Figure 17 This is a schematic diagram of the stroller after it has been folded up according to the present invention. Detailed Implementation

[0037] like Figures 1 to 6 As shown, the stroller joint of the present invention can switch between an unfolded state and a folded state. The stroller joint includes 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 pivotally connected to different positions of the first pivot member 1. The linkage member 2 is also provided with a first elongated hole 21 and a second elongated hole 22. The second pivot member 3 is provided with a first transmission member 31, which can be relatively movably inserted into the first elongated hole 21. The third pivot member 4 is provided with a second transmission member 41, which can be relatively movably inserted into the second elongated hole 22.

[0038] When the upper side of the second pivot 3 rotates backward and downward, the first transmission member 31 not only rotates with the second pivot 3, but also moves along the first elongated hole 21, thereby driving the linkage 2 to rotate forward; and when the linkage 2 rotates in this way, through the cooperation of the second transmission member 41 and the second elongated hole 22, the rear side of the third pivot 4 can be driven to rotate forward, thereby causing the front side of the third pivot 4 to rotate backward, and at the same time, the second pivot 42 also moves along the second elongated hole 22 (as shown). Figure 9 (As shown). Thus, even if both the second pivot 3 and the third pivot 4 move towards the first pivot 1 (as shown). Figure 7 , 8 As shown), until the second pivot 3 and the third pivot 4 can no longer rotate relative to the first pivot 1, at which point the second pivot 3 and the third pivot 4 are both relatively close to the first pivot 1, and the stroller joint of the present invention closes (as shown). Figure 10 , 11 (As shown in Figures 1 and 12). Similarly, rotating the front side of the third pivot 4 backward (i.e., towards the first pivot 1) in the direction of the first pivot 1 can also cause the upper side of the second pivot 3 to rotate towards the first pivot 1. Thus, with the stroller joint of the present invention configured in this way, rotating either the second pivot 3 or the third pivot 4 will cause both the second pivot 3 and the third pivot 4 to rotate together towards the first pivot 1, thereby closing the stroller joint of the present invention. In other words, with the stroller joint of the present invention configured in this way, the relative rotation of the first pivot, the second pivot, and the third pivot is smoother, thus making the closing of the stroller joint of the present invention easier and less strenuous.

[0039] When the stroller joint needs to be unfolded from its folded state, the second pivot member 3 or the third pivot member 4 can be rotated in the opposite direction relative to the first pivot member 1, thus making the unfolding of the stroller joint of the present invention very easy and effortless.

[0040] Preferably, the second pivot member 3 and the third pivot member 4 are respectively connected via the first pivot 32 (e.g., Figure 6 As shown, and Figure 4As shown in Figure 30, the second pivot member 3 has a pivot hole 30 for pivoting with the first pivot 32, and the second pivot 42 is pivotally connected to the first pivot member 1. 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 42. The second pivot member 3 rotates relative to the first pivot member 1 with the first pivot 32 as the pivot axis, and the third pivot member 4 rotates relative to the first pivot member 1 with the second pivot 42 as the pivot axis. This arrangement allows the first transmission member 31 to drive the linkage member 2 to rotate a larger angle relative to the first pivot member 1 when the stroller joint is folded. This not only allows the second pivot member 3 to get closer to the first pivot member 1, but also allows the linkage member 2 to rotate 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, thus allowing the third pivot member 4 to get closer to the first pivot member 1. This results in a relatively small joint volume after folding.

[0041] The linkage 2 is pivotally connected to the first pivot 1 via a third pivot 23, and the first elongated hole 21, the second elongated hole 22 and the third pivot 23 are respectively located at different positions.

[0042] In this embodiment, preferably, a first positioning member 33 is provided on the side of the second pivot member 3 facing the first pivot member 1, and a second positioning member 11 is provided on the side of the first pivot member 1 facing the second pivot member 3. When the stroller joint is in the unfolded state, the first positioning member 33 and the second positioning member 11 are respectively located on the upper and lower sides of the rear side of the third pivot member 4 (e.g., Figure 5 (As shown). This configuration better prevents the third pivot 4 from wobbling when the stroller joint is in the unfolded state, and the third pivot 4 cannot rotate relative to the first pivot 1, thus ensuring the stability of the stroller joint in the unfolded state. During the stroller joint folding process, when the second pivot 3 rotates relative to the first pivot 1, the first positioning member 33 will move away with the rotation of the second pivot 3, preventing interference with the rotation of the third pivot 4 (e.g., ...). Figure 9 , 12 (As shown).

[0043] In this embodiment, the stroller joint of the present invention further includes a rotating piece 5. The first pivot member 1 and the second pivot member 3 are respectively pivotally connected to different positions of the rotating piece 5. 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 outward from the first pivot member 1. The rotating piece 5 is configured such that during the relative rotation of the second pivot member 3 and the first pivot member 1, one end 52 of the rotating piece 5 facing outward from the first pivot member 1 remains in a state of not disengaging from the second pivot member 3, and the other end 53 corresponding to this end remains in a state of not disengaging from the first pivot member 1.

[0044] The stroller joint also includes a drive member 6. The rotating piece 5 and the drive member 6 are respectively disposed on opposite sides of the first pivot member 1 and the second pivot member 3. One side of the drive member 6 is pivotally connected to the second pivot member 3 via a fourth pivot 61, and the other side is pivotally connected to the rotating piece 5, thereby achieving the purpose of pivoting the second pivot member 3 and the rotating piece 5. This arrangement ensures that when the second pivot member 3 rotates relative to the first pivot member 1, the rotating piece 5 not only rotates simultaneously with the second pivot member 3 relative to the first pivot member 1, but also rotates around the fourth pivot 61 relative to the second pivot member 3. Thus, when the first pivot member 1 rotates relative to the first pivot member 1, the other side of the rotating piece 5, in this manner, will drive the rotating piece 5 to rotate outward from the first pivot member 1.

[0045] During the retraction of the first joint, a gap is created between the second pivot 3 and the first pivot 1 due to their relative rotation. This gap could potentially cause hand injury. The present invention employs a rotating plate 5 as described above, which rotates outward from the first pivot 1 during the relative rotation of the second pivot 3 and the first pivot 1. Furthermore, both ends of the rotating plate 5 remain attached to both the first pivot 1 and the second pivot 3, thus filling the aforementioned gap (e.g., ...). Figure 8 , 11 As shown in the figure, this avoids the possibility of injury from being pinched in the gap.

[0046] In this embodiment, the rotating piece 5 is fan-shaped. During the relative rotation of the second pivot 3 and the first pivot 1, one side 52 of the fan-shaped rotating piece 5 facing outward from the first pivot 1 remains in a state of not disengaging from the second pivot 3, and the corresponding other side 53 remains in a state of not disengaging from the first pivot 1. The fan-shaped rotating piece 5 not only fills the gap between the fingers but also achieves the above function while minimizing its size, thereby saving manufacturing costs.

[0047] In this embodiment, the rotating plate 5 and the first pivot member 1 are respectively provided with a mating part 51 and an arc-shaped hole 12 that can cooperate with each other. The mating part 51 can be inserted into the arc-shaped hole 12 relatively movable, so that during the rotation of the rotating plate 5 relative to the first pivot member 1, the mating part 51 moves along the direction of the arc-shaped hole 12. This arrangement not only guides the rotation of the rotating plate 5 and the first pivot member 1, making the rotation of the first pivot member 1 smoother, but also prevents the rotating plate 5 from rotating relative to the first pivot member 1 without restriction, thereby avoiding the generation of a clamping gap between the rotating plate 5 itself and the first pivot member 1 due to unrestricted rotation.

[0048] Preferably, the mating component 51 is also connected to the other side of the driving component 6, and the mating component 51 is pivotally connected to both the rotating plate 5 and the driving component 6; or, the mating component 51 is pivotally connected to at least one of the driving component 6 and the rotating plate 5. This arrangement not only achieves the purpose of pivotally connecting the other side of the driving component 6 to the rotating plate 5, but also realizes the function of the mating component 51 engaging with the arc-shaped hole 12. In other words, one arrangement achieves two functions, thereby making the assembly of related components more convenient, saving costs, and making the structure more compact.

[0049] In this embodiment, the mating member 51 protrudes from the side of the rotating piece 5 facing the second pivot member 3, and the other side of the driving member 6 is provided with a pivot hole 62 for the mating member 51 to pivot.

[0050] The first pivot member 1 includes 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 a receiving gap 15 is provided between the fixing member 14 and the opposite side of the base 13. When the stroller joint is in the unfolded state, the rotating piece 5 is at least partially rotatably located within the gap relative to the first pivot member 1. The arc-shaped hole 12 is provided on the fixing member 14. The mating piece 51 passes through the pivot hole 62 on the side facing the second pivot member 3 and is inserted into the arc-shaped hole 12. This arrangement not only does not affect the rotating piece 5's rotation outward when the joint is closed, but also realizes the function of the mating piece 51 and the arc-shaped hole 12 cooperating with each other.

[0051] The other side of the drive member 6 also extends into the receiving gap 15 and is pivotally connected to the rotating piece 5. This arrangement fully utilizes the height difference between the surface of the base 13 and the surface of the fixing member 14 facing the second pivot member 3, thereby saving installation space and allowing the overall size of the stroller joint of the present invention to be smaller and easier to assemble. In other embodiments, the drive member 6 may also be positioned between the second pivot member 3 and the first pivot member 1.

[0052] The rotating piece 5 is pivotally connected to the fixing member 14 via a fifth pivot 50. The fifth pivot 50 and the mating member 51 are located at different positions. When the rotating piece 5 rotates relative to the first pivot member 1, it rotates around the fifth pivot 50 as the axis of rotation. The rotating piece 5 can also be pivotally connected to the base 13 via the fifth pivot 50.

[0053] In this embodiment, the first pivot member 1 further includes a second fixing member 18 fixedly connected to the base 13. The second fixing member 18, fixing member 14, and second pivot member 3 are all connected to the same side of the base 13; and a gap is also provided between the second fixing member 18 and the base 13. After the first pivot member 1, the second pivot member 3, and the third pivot member 4 are pivotally connected to each other, the linkage member 2 and the portion of the third pivot member 4 pivotally connected to the linkage member are all located between the base 13 of the first pivot member 1 and the second pivot member 3 and the second fixing member 18. This arrangement can prevent external objects from interfering with the mutual rotation and movement of the linkage member 2, the second pivot member 3, and the third pivot member 4.

[0054] In this embodiment, the stroller joint is further provided with a locking mechanism that can lock the stroller joint in an unfolded state. In this embodiment, the locking structure includes a button 71 and a locking member 72. The button 71 is pivotally connected to the side of the first pivot member 1 away from the second pivot member 3 in a seesaw manner. The locking member 72 is relatively movable and connected to the first pivot member 1, and one side of the locking member 72 is pivotally connected to one side of the button 71. An elastic reset member 73 is provided between the other side of the button 71 and the first pivot member 1. The second pivot member 3 is provided with a corresponding locking hole 34. Under the action of the elastic reset member 73, one side of the button 71 drives the locking member 72 to move toward the second pivot member 3, and the other side of the locking member 72 is inserted into the locking hole 34, so that the second pivot member 3 and the first pivot member 1 cannot rotate relative to each other, thereby the joint of the present invention is in an unfolded state.

[0055] When the joint of the present invention is to be closed, the button 71 can be pressed on the side facing the second pivot 3. Due to the seesaw principle, the button 71 rotates and moves away from the second pivot 3, thereby driving the locking member 72 to move away from the second pivot 3 and disengage from the locking hole 34. At this time, the second pivot 3 and the first pivot 1 can rotate relative to each other, so that the joint of the present invention can be closed.

[0056] Therefore, when the stroller joint is unfolded from the folded state, when the second pivot 3 rotates relative to the first pivot 1 until the locking hole 34 aligns with the locking member 72, under the action of the elastic reset member 73, one side of the locking member 72 automatically extends into the locking hole 34, thereby automatically locking the stroller joint in the unfolded state. This makes operation more convenient.

[0057] In this embodiment, the first pivot member 1 has a receiving groove 16 on the side facing away from the second pivot member 3. The button 71 is placed in the receiving groove 16, that is, the button 71 is placed in the receiving groove 16 in a seesaw manner. The side wall of the receiving groove 16 facing the second pivot member 3 has a through hole 161 at the position corresponding to the locking hole 34. The locking member 72 can move along the through hole 161. In this way, not only can the smooth movement of the locking member 72 be guaranteed, but also the fact that when the through hole is aligned with the locking hole 34, one side of the locking member 72 can be accurately engaged in the locking hole 34.

[0058] A cover 17 is connected to the side of the receiving groove 16 away from the second pivot member 3, and the cover 17 is provided with an operation hole 171 on the other side of the corresponding button 71 (e.g. Figure 2 (as shown), thus facilitating the operator's finger to pass through the control hole to press button 71.

[0059] The locking mechanism can also be disposed between any two pivotally connected components of the joint of the present invention. Furthermore, the locking mechanism can also be any other known and feasible structure. Moreover, the locking mechanism is not the inventive point of the present invention, so it will not be described in detail here.

[0060] like Figures 15 to 17 As shown, the present invention also discloses a stroller, the stroller including the stroller joints described above.

[0061] The stroller also includes a handlebar 8, a front foot 9, and a rear foot 10. In this embodiment, the lower end of the handlebar 8 is fixedly connected to the first pivot member 1 in the stroller joint, the rear end of the front foot 9 is fixedly connected to the second pivot member 3 in the stroller joint, and the front end of the rear foot 10 is fixedly connected to the third pivot member 4 in the stroller joint.

[0062] The first pivot member 1, the second pivot member 3, and the third pivot member 4 can be directly integrally formed with the stroller's handle 8, front leg 9, and rear leg 10, respectively. That is, the lower end of the stroller's handle 8, the rear end of the front leg 9, and the front end of the rear leg 10 are respectively set as the second pivot member 3, the third pivot member 4, and the first pivot member 1.

[0063] When the first pivot 1, the second pivot 3, and the third pivot 4 are in the unfolded state, the stroller is in the unfolded state; when the first pivot 1, the second pivot 3, and the third pivot 4 are in the folding process, the stroller is also in the folding process; when the first pivot 1, the second pivot 3, and the third pivot 4 are in the folded state, the stroller is also in the folded state.

[0064] The smoother relative rotation of the first, second, and third pivot members means that the relative rotation of the stroller's handle 8, front foot 9, and rear foot 10 is smoother, making the folding and closing operation of the stroller easier and less strenuous. The easy and effortless unfolding of the stroller's joints also means that the unfolding operation of the stroller is easier and less strenuous. The fact that the first pivot member 1 in the stroller joint can be closer to the second pivot member 3, and the third pivot member 4 closer to the first pivot member 1, means that the handle 8, front foot 9, and rear foot 10 are closer together, resulting in a relatively smaller stroller size after folding, making it easier to carry and store.

[0065] The front foot 9 is connected to the front wheel 91 at its lower front part, and the rear foot 10 is connected to the rear wheel 101 at its lower rear part.

[0066] The above directional definitions are for ease of description only and are not intended to define directions. Furthermore, in these definitions, when the stroller is in its unfolded state, the location of the front wheel 91 is considered "front," the location of the rear wheel 101 is considered "rear," the location of the handlebars 8 is considered "up," and the locations of the front wheel 91 and the rear wheel 101 are considered "down." It should be understood that the directions will change accordingly as the viewing angle changes.

Claims

1. A stroller joint that can switch between an extended state and a folded state, characterized in that: The stroller joint includes a first pivot member, a linkage member, a second pivot member, and a third pivot member. The linkage member, the second pivot member, and the third pivot member are pivotally connected to different positions of the first pivot member. The linkage member is also provided with a first elongated hole and a second elongated hole. The second pivot member is provided with a first transmission member, which can be relatively movably inserted into the first elongated hole. The third pivot member is provided with a second transmission member, which can be relatively movably inserted into the second elongated hole. The stroller joint also includes a rotating piece. The first pivot member and the second pivot member are pivotally connected to different positions of the rotating piece. During the relative rotation of the second pivot member and the first pivot member, the rotating piece can be driven by the second pivot member to rotate outward from the first pivot member. The rotating piece is configured such that during the relative rotation of the second pivot member and the first pivot member, one end of the rotating piece facing outward from the first pivot member remains in a state of not disengaging from the second pivot member, and the other end corresponding to that end remains in a state of not disengaging from the first pivot member. The rotating plate and the first pivot member are respectively provided with a mating part and an arc-shaped hole that can cooperate with each other, and the mating part can be inserted into the arc-shaped hole relatively movable; The stroller joint also includes a drive component, one side of which is pivotally connected to the second pivot component via a fourth pivot, and the other side is pivotally connected to the rotating plate. A pivot hole is provided on the other side of the drive component for pivoting with the mating component. The mating component is also connected to the other side of the drive component, and the mating component is pivotally connected to both the rotating plate and the drive component; or, the mating component is pivotally connected to at least one of the other side of the drive component and the rotating plate; the first pivot component includes a base and a fixing component fixedly connected to the base, the fixing component is located between the base and the second pivot component, and a receiving gap is provided between the fixing component and the opposite side of the base, so that when the stroller joint is in the unfolded state, the rotating plate is at least partially rotatably located within the gap relative to the first pivot component; the arc-shaped hole is provided on the fixing component; the mating component is inserted into the arc-shaped hole after passing through the pivot hole on the side facing the second pivot component.

2. The stroller joint according to claim 1, characterized in that: The second pivot member has a first positioning member on the side facing the first pivot member, and the first pivot member has a second positioning member on the side facing the second pivot member. When the stroller joint is in the unfolded state, the first positioning member and the second positioning member are respectively located on the upper and lower sides of the rear side of the third pivot member.

3. The stroller joint of claim 1, wherein: The rotating plate and the driving component are respectively disposed on opposite sides of the first pivot and the second pivot.

4. A pram joint according to claim 2, characterised in that: The rotating plate and the driving component are respectively disposed on opposite sides of the first pivot and the second pivot.

5. A pram joint according to any one of claims 1 to 4, characterised in that: The stroller joint is also provided with a locking mechanism that can lock the stroller joint in the unfolded state. The locking mechanism includes a button and a locking member. The button is pivotally connected to the side of the first pivot member away from the second pivot member in a seesaw manner. The locking member is relatively movable and connected to the first pivot member, and one side of the locking member is pivotally connected to the side of the button. An elastic reset member is provided between the other side of the button and the first pivot member; a corresponding locking hole is provided on the second pivot member; under the action of the elastic reset member, one side of the button drives the locking member to move toward the second pivot member, and the other side of the locking member is inserted into the locking hole.

6. A pram joint according to claim 5, wherein: The first pivot member has a receiving groove on the side opposite to the second pivot member. The button is placed in the receiving groove in a rocker-like manner. The receiving groove has a through hole on the side wall facing the second pivot member at the position corresponding to the locking hole. The locking member can move along the through hole.

7. The stroller joint according to any one of claims 1 to 4, 6, characterized in that: The second pivot member and the third pivot member are pivotally connected to the first pivot member via the first pivot and the second pivot respectively. When the stroller joint is in the unfolded state, the first transmission member is located below the second pivot member, and the second transmission member is located behind the second pivot.

8. A pram joint according to claim 5, characterised in that: The second pivot member and the third pivot member are pivotally connected to the first pivot member via the first pivot and the second pivot respectively. When the stroller joint is in the unfolded state, the first transmission member is located below the second pivot member, and the second transmission member is located behind the second pivot.

9. A stroller characterized by: Including the stroller joint as described in any one of claims 1 to 8.

10. The stroller of claim 9, wherein: It also includes a rider, front feet, and rear feet. The lower end of the rider is fixedly connected to the first pivot in the stroller joint, the rear end of the front feet is fixedly connected to the second pivot in the stroller joint, and the front end of the rear feet is fixedly connected to the third pivot in the stroller joint; or, the first pivot, the second pivot, and the third pivot are integrally formed with the rider, front feet, and rear feet of the stroller, respectively.

11. The stroller of claim 10, wherein: The front foot is connected to the front wheel at its lower front part, and the rear foot is connected to the rear wheel at its lower rear part.

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