Connecting rod mechanism and children product

Abstract

The connecting rod mechanism comprises a first connecting rod, a second connecting rod, a locking mechanism and an unlocking mechanism, the first connecting rod and the second connecting rod are rotationally connected through a first rotating shaft, and the first connecting rod is at least provided with a first position and a second position relative to the second connecting rod. The locking mechanism is arranged between the first connecting rod and the second connecting rod to lock the connecting rod mechanism, and the unlocking mechanism is matched with the locking mechanism to drive the locking mechanism to unlock; the locking mechanism comprises a locking piece arranged on the first connecting rod in a sliding mode and a locking part arranged on the second connecting rod and matched with the locking piece in a detachable mode. The unlocking mechanism comprises a driving part, the driving part is movably arranged on the first connecting rod relative to the second rotating shaft, the driving part is matched with the locking part, and the first rotating shaft and the second rotating shaft are not coaxial. According to the connecting rod mechanism, the structure of the connecting position of the first connecting rod and the second connecting rod can be designed to be relatively small, materials can be saved, the manufacturing cost is reduced, and meanwhile the connecting rod mechanism is attractive in appearance.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's products technical field, concretely relates to a connecting rod mechanism and children's products. BACKGROUND

[0002] Part of children's products is provided with connecting rod mechanism, and the connecting rod mechanism includes at least two connecting rods, and the at least two connecting rods are rotatably connected, so that the connecting rod mechanism can be unfolded or folded, such as the push rod assembly of the child stroller. The connecting rod mechanism also needs to be locked by the locking mechanism when being unfolded, and the connecting rod mechanism can be folded only after the locking mechanism is unlocked by the unlocking mechanism. In the prior art, the locking mechanism and part of the unlocking mechanism are arranged at the rotating connection of the two connecting rods, and other components can also be arranged at the component, such as the canopy rod arranged at the rotating connection of the upper push rod and the lower push rod in the push rod assembly of the child stroller, which makes the rotating connection of the two rods need to be designed with relatively large structure size, on the one hand, more materials are needed, so that the manufacturing cost is high, and on the other hand, the overall appearance of the child stroller is also affected. SUMMARY

[0003] The utility model aims at the deficiency in the prior art, and provides a connecting rod mechanism with low manufacturing cost and good appearance.

[0004] To achieve the above object, the utility model adopts the technical scheme that:

[0005] A connecting rod mechanism, the connecting rod mechanism includes a first connecting rod and a second connecting rod rotatably connected through a first rotating shaft, a locking mechanism and an unlocking mechanism, the first connecting rod has at least a first position and a second position relative to the second connecting rod, the locking mechanism is arranged between the first connecting rod and the second connecting rod to lock the connecting rod mechanism, and the unlocking mechanism cooperates with the locking mechanism to drive the locking mechanism to be unlocked.

[0006] The locking mechanism includes a locking piece slidably arranged on the first connecting rod and a locking part arranged on the second connecting rod and disengageably cooperating with the locking piece.

[0007] The unlocking mechanism includes a driving piece, the driving piece is movably arranged on the first connecting rod relative to a second rotating shaft, the driving piece cooperates with the locking piece, and the first rotating shaft and the second rotating shaft are different shafts.

[0008] In some embodiments, the first rotating shaft and the second rotating shaft are arranged in parallel, and both are perpendicular to the extension direction of the first connecting rod and the second connecting rod.

[0009] The locking piece is slidably arranged on the first connecting rod along the second rotating shaft.

[0010] The driving member is arranged on the first connecting rod in sliding along the second rotation axis, or the driving member is arranged on the first connecting rod in rotation around the second rotation axis.

[0011] In some embodiments, the driving member is arranged in rotation around the second rotation axis, and the driving member cooperates with the first connecting rod so that the driving member is arranged in sliding relative to the first connecting rod along the extension direction of the second rotation axis when the driving member rotates, and the sliding direction of the driving member is the same as the sliding direction of the locking member.

[0012] In some embodiments, the driving member is provided with a first inclined surface, the first connecting rod is provided with a second inclined surface, the first inclined surface cooperates with the second inclined surface in abutment, and the first inclined surface and the second inclined surface are both arranged in inclination relative to the sliding direction of the driving member.

[0013] The driving member is provided with a first straight surface, the locking member is provided with a second straight surface, the first straight surface cooperates with the second straight surface in abutment, and the first straight surface and the second straight surface are both arranged in perpendicularity relative to the sliding direction of the driving member.

[0014] In some embodiments, the locking part is a lock hole arranged on the second connecting rod, and the lock hole is provided with at least two, and the locking member is provided with a lock tongue cooperating with the lock hole; when the first connecting rod is in the first position, the lock tongue is inserted into one of the lock holes; when the first connecting rod is in the second position, the lock tongue is inserted into the other lock hole; when the locking mechanism is in the unlocked state, the lock tongue is withdrawn from any of the lock holes.

[0015] In some embodiments, the locking mechanism further comprises a resilient member, and two ends of the resilient member are arranged on the first connecting rod and the locking member respectively.

[0016] In some embodiments, the unlocking mechanism further comprises an unlocking button and a traction cable, the unlocking button is movably arranged on the first connecting rod, one end of the traction cable is arranged on the unlocking button, and the other end of the traction cable is arranged on the driving member.

[0017] In some embodiments, the first connecting rod comprises a first rod body and a first joint arranged at one end of the first rod body, the second connecting rod comprises a second rod body and a second joint arranged at one end of the second rod body, and the first joint and the second joint are both in non-circular profile structure in cross section in the lateral projection direction.

[0018] The first joint is rotationally connected with the second joint through the first rotating shaft, the locking member is slidably arranged on the first joint, the locking portion is arranged on the second joint, the driving member is rotationally connected with the first joint through the second rotating shaft, and the second rotating shaft is arranged at a position close to the first connecting rod relative to the first rotating shaft.

[0019] In some embodiments, when the first connecting rod is located at the first position, the connecting rod mechanism is in the unfolded state, and when the first connecting rod is located at the second position, the connecting rod mechanism is in the folded state.

[0020] The first rod body has oppositely arranged first and second side portions, and the first side portion is arranged close to the first rotating shaft.

[0021] The second rod body has oppositely arranged third and fourth side portions, and the third side portion is arranged close to the first rotating shaft.

[0022] The first joint has oppositely arranged fifth and sixth side portions, and the fifth side portion is arranged close to the first rotating shaft.

[0023] The second joint has oppositely arranged seventh and eighth side portions, and the seventh side portion is arranged close to the first rotating shaft.

[0024] When the connecting rod mechanism is in the unfolded state, in the lateral projection direction, the second side portion is flush with the fourth side portion, the fifth side portion is flush with the seventh side portion, the sixth side portion is flush with the eighth side portion, the sixth side portion and the eighth side portion are both flush with the second side portion and the fourth side portion, or the sixth side portion and the eighth side portion are both located inside the second side portion and the fourth side portion.

[0025] When the connecting rod mechanism is in the folded state, in the lateral projection direction, the fifth side portion is close to the eighth side portion, and the fifth side portion does not exceed the eighth side portion.

[0026] The utility model also provides a children's product, the children's product has the connecting rod mechanism as any one of the above.

[0027] Due to the use of the above technical scheme, compared with the prior art, the connecting rod mechanism of the utility model has the following advantages: in the connecting rod mechanism of the utility model, the first rotating shaft and the second rotating shaft are arranged as different shaft structures, so that when other components are connected at the position of the first rotating shaft, the installation position of the driving member is not affected, thereby the structure of the connection position of the first connecting rod and the second connecting rod can be designed to be relatively small, material can be saved, manufacturing cost can be reduced, and the appearance of the connecting rod mechanism is also beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 6 is a perspective view of the linkage mechanism of the present embodiment in the unfolded state; Figure 1 Fig. 7 is a side view of the linkage mechanism of the present embodiment in the unfolded state;

[0029] Fig. 8 is a side view of the linkage mechanism of the present embodiment in the unfolded state with some structures removed; Figure 2 Fig. 9 is a perspective view of the linkage mechanism of the present embodiment in the folded state;

[0030] Fig. 10 is a side view of the linkage mechanism of the present embodiment in the folded state; Figure 3 Fig. 11 is a side view of the linkage mechanism of the present embodiment in the folded state with some structures removed;

[0031] Fig. 12 is an exploded view of the linkage mechanism of the present embodiment; Figure 4 Fig. 13 is an exploded view of the first linkage of the present embodiment;

[0032] Fig. 14 is a partial enlarged view of Fig. 13 at A; Figure 5 Fig. 15 is a perspective view of the first linkage of the present embodiment with some structures removed (the locking member is in the locked position);

[0033] Fig. 16 is a partial enlarged view of Fig. 15 at A; Figure 6 Fig. 17 is a perspective view of the first linkage of the present embodiment with some structures removed (the locking member is in the unlocked position);

[0034] Fig. 18 is a partial enlarged view of Fig. 17 at A; Figure 7 Fig. 19 is a perspective view of the second linkage of the present embodiment with some structures removed (the locking member is in the locked position);

[0035] Fig. 21 is a partial enlarged view of Fig. 19 at A; Figure 8 Fig. 22 is a perspective view of the second linkage of the present embodiment with some structures removed (the locking member is in the unlocked position);

[0036] Fig. 24 is a partial enlarged view of Fig. 22 at A; Figure 9 Fig. 25 is a perspective view of the third linkage of the present embodiment with some structures removed (the locking member is in the locked position); Figure 8 Fig. 26 is a partial enlarged view of Fig. 25 at A;

[0037] Fig. 28 is a perspective view of the third linkage of the present embodiment with some structures removed (the locking member is in the unlocked position); Figure 10 Fig. 29 is a partial enlarged view of Fig. 28 at A;

[0038] Fig. 31 is a partial enlarged view of Fig. 30 at A; Figure 11 Fig. 32 is a perspective view of the fourth linkage of the present embodiment with some structures removed (the locking member is in the locked position); Figure 10 Fig. 33 is a partial enlarged view of Fig. 32 at A;

[0039] Fig. 35 is a perspective view of the fourth linkage of the present embodiment with some structures removed (the locking member is in the unlocked position); Figure 12 Fig. 36 is a partial enlarged view of Fig. 35 at A;

[0040] Fig. 38 is a partial enlarged view of Fig. 37 at A; Figure 13 Fig. 39 is a perspective view of the fifth linkage of the present embodiment with some structures removed (the locking member is in the locked position); Figure 12 Fig. 40 is a partial enlarged view of Fig. 39 at A;

[0041] Wherein: 1, first connecting rod; 11, first rod body; 111, first side; 112, second side; 12, first joint; 121, second inclined surface; 122, fifth side; 123, sixth side; 2, second connecting rod; 21, second rod body; 211, third side; 212, fourth side; 22, second joint; 221, locking portion; 222, seventh side; 223, eighth side; 3, first rotating shaft; 4, locking piece; 41, locking tongue; 51, driving piece; 511, first inclined surface; 512, avoiding groove; 52, unlocking button; 6, second rotating shaft. DETAILED DESCRIPTION

[0042] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0043] As Figures 1-7 shown in the figure, the connecting rod mechanism of the utility model comprises a first connecting rod 1 and a second connecting rod 2, and the first connecting rod 1 and the second connecting rod 2 are rotationally connected through a first rotating shaft 3.

[0044] The first connecting rod 1 comprises a first rod body 11 and a first joint 12, and the first joint 12 is fixedly arranged at one end of the first rod body 11. The second connecting rod 2 comprises a second rod body 21 and a second joint 22, and the second joint 22 is fixedly arranged at one end of the second rod body 21. The first joint 12 and the second joint 22 are rotationally connected through the first rotating shaft 3.

[0045] The connecting rod mechanism has an unfolded state and a folded state. When the connecting rod mechanism is in the unfolded state, the first rod body 11 and the second rod body 21 are away from each other, as Figures 1-3 shown in the figure. When the connecting rod mechanism is in the folded state, the first rod body 11 and the second rod body 21 are close to each other, as Figures 4-6 shown in the figure. Rotating the first connecting rod 1 around the first rotating shaft 3 relative to the second connecting rod 2 can convert the connecting rod mechanism between the unfolded state and the folded state.

[0046] The first connecting rod 1 has at least a first position and a second position relative to the second connecting rod 2. In this embodiment, when the first connecting rod 1 is located at the first position, the connecting rod mechanism is in the unfolded state. When the first connecting rod 1 is located at the second position, the connecting rod mechanism is in the folded state. Of course, in other embodiments, the connecting rod mechanism can not be in the unfolded state and the folded state when the first connecting rod 1 is at the first position and the second position.

[0047] Specifically, the outer profile surface of the first rod body 11 has a first side 111 and a second side 112 oppositely arranged, and the first side 111 is arranged close to the first rotating shaft 3. The outer profile surface of the second rod body 21 has a third side 211 and a fourth side 212 oppositely arranged, and the third side 211 is arranged close to the first rotating shaft 3. When the linkage mechanism is in the unfolded state, the second side 112 is flush with the fourth side 212. When the linkage mechanism is in the folded state, the first side 111 is close to the third side 211.

[0048] The linkage mechanism further comprises a locking mechanism. When the first linkage 1 is in the first position and the second position, the locking mechanism is in the locked state, and the first linkage 1 and the second linkage 2 cannot rotate relative to each other. Only when the locking mechanism is unlocked, the first linkage 1 and the second linkage 2 can rotate relative to each other to adjust the position of the first linkage 1 relative to the first linkage 1.

[0049] The locking mechanism comprises a locking piece 4 and a locking portion 221 matched with the locking piece 4. The locking piece 4 is slidably arranged on the first linkage 1, and the locking portion 221 is arranged on the second linkage 2. When the locking mechanism is in the locked state, the locking piece 4 is in the locked position, and at this time the locking piece 4 cooperates with the locking portion 221 to lock the relative position of the first linkage 1 and the second linkage 2, as shown in Figure 4 and Figure 6 When the locking mechanism is in the unlocked state, the locking piece 4 is in the unlocked position, and at this time the locking piece 4 is completely out of the locking portion 221, and at this time the first linkage 1 can rotate relative to the second linkage 2.

[0050] Specifically, as shown in Figures 8-13 , the locking piece 4 is provided with a locking tongue 41, and the locking portion 221 is a locking hole arranged on the second linkage 2. When the locking mechanism is in the locked state, as shown in Figure 10 and Figure 11 , the locking tongue 41 protrudes out of the first linkage 1, so as to be inserted into the locking hole on the second linkage 2. When the locking mechanism is in the unlocked state, as shown in Figure 12 and Figure 13 , the locking tongue 41 is retracted into the first linkage 1, so as to be out of the locking portion 221.

[0051] As shown in Figure 4 and Figure 6 , the locking hole is provided with at least two on the second linkage 2 along the circumferential direction of the rotation of the first linkage 1. When the first linkage 1 is in the first position, the locking tongue 41 is inserted into one of the locking holes. When the first linkage 1 is in the second position, the locking tongue 41 is inserted into the other locking hole.

[0052] In this embodiment, the locking piece 4 is slidably arranged on the first joint 12, and the locking hole is arranged on the second joint 22.

[0053] The locking mechanism further comprises an elastic member (not shown in the figure), one end of the elastic member is arranged on the locking member 4, and the other end is arranged on the first joint 12. When the first connecting rod 1 rotates relative to the second connecting rod 2 to the position where the lock tongue 41 corresponds to the position of the lock hole, the locking member 4 can be slid under the elastic force of the elastic member, so that the lock tongue 41 is inserted into the lock hole.

[0054] The connecting rod mechanism further comprises an unlocking mechanism arranged on the first connecting rod 1, the unlocking mechanism is connected or matched with the locking mechanism. When the locking mechanism operates the unlocking mechanism in the locked state, the locking mechanism can be unlocked.

[0055] The unlocking mechanism comprises a driving member 51, the first joint 12 of the first connecting rod 1 is provided with a second rotating shaft 6, the driving member 51 is movably arranged on the first joint 12 and arranged at the second rotating shaft 6, and the driving member 51 is matched with the locking member 4. The driving member 51 is movably arranged in the following ways.

[0056] In one embodiment, the driving member 51 is rotatably arranged on the first joint 12. When the driving member 51 rotates relative to the first connecting rod 1 around the second rotating shaft 6 in the locked state of the locking mechanism, the locking member 4 can be driven to slide relative to the first connecting rod 1, so that the locking mechanism is unlocked. In this embodiment, the driving member 51 is rotatably arranged on the second rotating shaft 6, the locking member 4 is rotatably arranged on the second rotating shaft 6 and can slide along the second rotating shaft 6, and the driving member 51 and the locking member 4 can be matched with each other through the inclined surface.

[0057] In another embodiment, the driving member 51 is rotatably arranged on the first joint 12 and can slide along the extension direction of the second rotating shaft 6, when the driving member 51 slides along the extension direction of the second rotating shaft 6, the locking member 4 is driven to slide relative to the first connecting rod 1, so that the locking mechanism is unlocked.

[0058] In this embodiment, the driving member 51 is matched with the first joint 12, when the driving member 51 rotates around the second rotating shaft 6, the driving member 51 is driven to slide along the extension direction of the second rotating shaft 6 through the matching between the driving member 51 and the first joint 12. The driving member 51 and the locking member 4 are rotatably arranged on the second rotating shaft 6, and slide in the same direction.

[0059] The matching mode of the driving member 51 and the first joint 12 is that the first inclined surface 511 is arranged on the driving member 51, the second inclined surface 121 is arranged on the first joint 12, the first inclined surface 511 and the second inclined surface 121 are matched with each other, and the first inclined surface 511 and the second inclined surface 121 are both arranged obliquely relative to the sliding direction of the driving member 51.

[0060] Specifically, one of the end face of the driving member 51 arranged towards the first joint 12 and the end face of the first joint 12 arranged towards the driving member 51 is provided with a protrusion, and the other is provided with a recess matched with the protrusion, one of the first inclined surface 511 and the second inclined surface 121 is arranged on the protrusion, and the other is arranged on the recess, the protrusion is clamped into the recess, and the first inclined surface 511 and the second inclined surface 121 are matched.

[0061] Preferably, the protrusions and the recesses are arranged on opposite sides of the driving member 51 and the first joint 12 respectively, so that the driving member 51 is uniformly stressed, thereby enabling the driving member 51 to smoothly slide along the extension direction of the second rotating shaft 6 without being easily stuck.

[0062] In this embodiment, the driving member 51 is provided with a first straight surface 512, and the locking member 4 is provided with a second straight surface 42, the first straight surface 512 and the second straight surface 42 are matched, and the first straight surface 512 and the second straight surface 42 are both arranged perpendicularly to the sliding direction of the driving member 51.

[0063] The driving member 51 is further provided with a clearance groove 513 extending along the circumferential direction of the driving member 51, and the locking tongue 41 is movably arranged in the clearance groove 513.

[0064] In another embodiment, the driving member 51 and the locking member 4 are both slidably arranged on the first joint 12 along the extension direction of the second rotating shaft 6. When the driving member 51 slides along the second rotating shaft 6 in the locked state of the locking mechanism, the locking member 4 is driven to slide relative to the first connecting rod 1, so that the locking mechanism is unlocked.

[0065] The unlocking mechanism further includes an unlocking button 52 and a traction cable (not shown in the figure). The unlocking button 52 is movably arranged on the first connecting rod 1, one end of the traction cable is arranged on the unlocking button 52, and the other end of the traction cable is arranged on the locking member 4. When the unlocking button 52 is pressed, the driving member 51 is pulled by the traction cable, the driving member 51 moves relative to the second rotating shaft 6, thereby acting on the locking member 4 to make it slide relative to the first connecting rod 1, so that the locking mechanism is unlocked.

[0066] The first rotating shaft 3 and the second rotating shaft 6 are not coaxial, and preferably, the first rotating shaft 3 and the second rotating shaft 6 are arranged in parallel, and the extension directions of the two are perpendicular to the extension directions of the first connecting rod 1 and the second connecting rod 2. In this way, the structures of the first joint 12 and the second joint 22 are both small in size, which can save materials and reduce manufacturing costs, and also make the appearance of the connecting rod mechanism beautiful. In this embodiment, the cross sections of the first joint 12 and the second joint 22 in the lateral projection direction are both non-circular special-shaped structures.

[0067] The first joint 12 has a fifth side 122 and a sixth side 123 arranged oppositely, the fifth side 122 is arranged close to the first rotating shaft 3, and the fifth side 122 is a plane parallel to the extending direction of the first connecting rod 1. The second joint 22 has a seventh side 222 and an eighth side 223 arranged oppositely, the seventh side 222 is arranged close to the first rotating shaft 3, and the seventh side 222 is a plane parallel to the extending direction of the second connecting rod 2.

[0068] When the connecting rod mechanism is in the unfolded state, in the lateral projection direction, the first joint 12 and the second joint 22 are mostly coincident, the sixth side 123 and the eighth side 223 are flush, and the fifth side 122 and the seventh side 222 are flush. The sixth side 123 and the eighth side 223 are both flush with the second side 112 and the fourth side 212, or the sixth side 123 and the eighth side 223 are both located inside the second side 112 and the fourth side 212.

[0069] When the connecting rod mechanism is in the folded state, in the lateral projection direction, the fifth side 122 is close to the eighth side 223, and the fifth side 122 does not exceed the eighth side 223; the sixth side 123 is close to the seventh side 222, and the seventh side 222 does not exceed the sixth side 123. In this way, the structure volume of the folded connecting rod mechanism is small.

[0070] The connecting rod mechanism can be applied to children's products, and the children's products can be a child stroller. The connecting rod mechanism can be used as a push rod assembly of the child stroller.

[0071] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A linkage mechanism, characterized in that: The linkage mechanism includes a first link and a second link rotatably connected by a first pivot, a locking mechanism, and an unlocking mechanism. The first link has at least a first position and a second position relative to the second link. The locking mechanism is disposed between the first link and the second link to lock the linkage mechanism. The unlocking mechanism cooperates with the locking mechanism to drive the locking mechanism to unlock. The locking mechanism includes a locking member that can be slidably disposed on the first link and a locking part disposed on the second link and detachably engaged with the locking member; The unlocking mechanism includes a driving member that is movably mounted on the first connecting rod relative to the second rotating shaft. The driving member cooperates with the locking member, and the first rotating shaft and the second rotating shaft are not coaxial.

2. The linkage mechanism according to claim 1, characterized in that: The first rotating shaft and the second rotating shaft are arranged in parallel, and both are perpendicular to the extension direction of the first connecting rod and the second connecting rod; The locking element is slidably mounted on the first connecting rod along the second pivot. The driving member is slidably disposed on the first connecting rod along the second rotating axis, or the driving member is rotatably disposed on the first connecting rod around the second rotating axis.

3. The linkage mechanism according to claim 1, characterized in that: The driving member is rotatable about the second pivot, and the driving member cooperates with the first connecting rod so that when the driving member rotates, it can also slide relative to the first connecting rod along the extension direction of the second pivot. The sliding direction of the driving member is the same as the sliding direction of the locking member.

4. The linkage mechanism according to claim 3, characterized in that: The driving component is provided with a first inclined surface, and the first connecting rod is provided with a second inclined surface. The first inclined surface and the second inclined surface are abutted and engaged. Both the first inclined surface and the second inclined surface are inclined relative to the sliding direction of the driving component. The driving component has a first straight surface, and the locking component has a second straight surface. The first straight surface and the second straight surface are abutted and engaged, and both the first straight surface and the second straight surface are perpendicular to the sliding direction of the driving component.

5. The linkage mechanism according to claim 1, characterized in that: The locking part is a lock hole provided on the second connecting rod, and there are at least two lock holes. The locking member is provided with a lock tongue that cooperates with the lock hole. When the first connecting rod is in the first position, the lock tongue is inserted into one of the lock holes. When the first connecting rod is in the second position, the lock tongue is inserted into the other lock hole. When the locking mechanism is in the unlocked state, the bolt disengages from either of the keyholes.

6. The linkage mechanism according to claim 1, characterized in that: The locking mechanism also includes an elastic element, with its two ends respectively disposed on the first connecting rod and the locking element.

7. The linkage mechanism according to claim 1, characterized in that: The unlocking mechanism also includes an unlocking button and a traction cable. The unlocking button is movably mounted on the first connecting rod, one end of the traction cable is mounted on the unlocking button, and the other end of the traction cable is mounted on the drive member.

8. The linkage mechanism according to any one of claims 1 to 7, characterized in that: The first connecting rod includes a first rod body and a first connector disposed at one end of the first rod body; the second connecting rod includes a second rod body and a second connector disposed at one end of the second rod body; the cross-sections of the first connector and the second connector in the lateral projection direction are both non-circular irregular structures. The first connector and the second connector are rotatably connected via the first rotating shaft. The locking member is slidably disposed on the first connector, and the locking part is disposed on the second connector. The driving member is rotatably connected to the first connector via the second rotating shaft, and the second rotating shaft is disposed relative to the first rotating shaft at a position close to the first connecting rod.

9. The linkage mechanism according to claim 8, characterized in that: When the first link is in the first position, the linkage mechanism is in the unfolded state; when the first link is in the second position, the linkage mechanism is in the folded state. The first rod has a first side and a second side disposed opposite to each other, with the first side disposed close to the first pivot. The second rod has a third side and a fourth side disposed opposite to each other, the third side being disposed close to the first pivot. The first connector has a fifth side and a sixth side disposed opposite to each other, the fifth side being disposed close to the first rotating shaft; The second connector has a seventh side and an eighth side disposed opposite to each other, the seventh side being disposed close to the first rotating shaft; When the linkage mechanism is in the deployed state, in the lateral projection direction, the second side and the fourth side are flush, the fifth side is flush with the seventh side, the sixth side and the eighth side are flush, both the sixth side and the eighth side are flush with the second side and the fourth side, or both the sixth side and the eighth side are located inside the second side and the fourth side; When the linkage mechanism is in a folded state, in the lateral projection direction, the fifth side is close to the eighth side, and the fifth side does not extend beyond the eighth side.

10. A children's product, characterized in that: It has a linkage mechanism as described in any one of claims 1 to 9.

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