CN105539555A - A baby carriage folding mechanism and a baby carriage using the folding mechanism - Google Patents

Abstract

The present invention discloses a folding mechanism for a baby carriage and a baby carriage using the folding mechanism. The folding mechanism for the baby carriage cleverly connects a push rod, a front leg support rod and a rear leg support rod through a front link rod, a rear link rod and a connecting rod assembly, so that the push rod, the front leg support rod and the rear leg support rod have the characteristic of minimized volume after being folded. At the same time, the folding mechanism for the baby carriage has the characteristics of simple structural design, smooth folding and unfolding operation and safe and reliable use. Therefore, the baby carriage using the folding mechanism also has the characteristics of simple structural design, convenient operation and rapid folding and unfolding, thereby minimizing the volume of the entire vehicle after being folded, making it convenient for people to carry and store it when going out.

Description

A baby carriage folding mechanism and a baby carriage using the folding mechanism

【Technical field】

The invention relates to a baby carriage, in particular to a baby carriage folding mechanism and a baby carriage using the folding mechanism.

【Background technique】

In order to facilitate the carrying and storage of baby carriages, in the prior art, general baby carriages are provided with folding mechanisms.

For example, the Chinese invention patent name discloses a children's stroller with a folding mechanism. It includes a push rod that can rotate around the first rotating shaft to the rear or front of the cart frame when the cart frame is converted from an unfolded position to a folded position, the first rotating shaft is located at the lower part of the push rod, and the cart frame is also It includes a push handle whose lower end is rotatably connected to the upper end of the push rod through a second rotating shaft, and a push handle locking mechanism with a locking position and an unlocking position for locking the two positions is arranged between the push handle and the push rod. Since the first rotating shaft is located at the lower end of the push rod, and the second rotating shaft is located at the upper end of the push rod, when the cart frame is in the process of switching between the expanded position and the folded position, the push rod can still be pushed around the first rotating shaft. When the rear or front of the cart frame rotates, the second rotating shaft moves downward, and the push handle can rotate upward around the second rotating shaft, so that the children's stroller adopting the above-mentioned technical solution can act on the upper part of the push handle without bending over. Fold the whole car, which is convenient for the pusher to take and operate.

However, the folding mechanism of the children's stroller adopting the above technical solution is relatively complicated, and after being folded, its volume is still relatively large, which is not conducive to carrying or storing it outside.

The present invention studies and proposes aiming at the deficiencies in the prior art.

【Content of invention】

The technical problem to be solved by the present invention is to provide a baby carriage folding mechanism, through which the push rod, the front foot support rod and the rear foot support rod are cleverly connected through the front linkage rod, the rear linkage rod and the connecting rod assembly, so that the push rod, the front foot support rod And the rear foot support rod has the characteristics of minimum volume after being folded. At the same time, the baby carriage folding mechanism has the characteristics of simple structure design, smooth unfolding operation, and safe and reliable use.

In order to solve the above-mentioned technical problems, a baby carriage folding mechanism of the present invention includes: a front foot support rod, a rear foot support rod and a push rod, the upper end of the rear foot support rod is hinged to the lower end of the push rod, and a front linkage rod is hinged at the upper end of the front foot support rod , the upper end of the rear foot support rod is hinged with a rear linkage rod, the other end of the front linkage rod and the other end of the rear linkage rod are jointly hinged with a push rod sliding sleeve that is slidably connected to the lower part of the push rod, and the lower part of the push rod is provided for locking The locking assembly of the push rod sliding sleeve, there is also a set between the front foot pole and the upper part of the rear foot pole. A linkage assembly with struts close together.

The connecting rod assembly includes a first connecting rod and a second connecting rod whose middle parts are hinged to each other to form an X structure, and the upper ends of the first connecting rod and the second connecting rod are respectively hinged with the upper ends of the front leg strut and the rear leg strut, so The lower ends of the first connecting rod and the second connecting rod are respectively slidably connected to the rear foot support rod and the front foot support rod.

The upper parts of the rear foot pole and the front foot pole are slidingly connected with the rear foot pole sliding sleeve and the front foot pole sliding sleeve respectively, the lower end of the first connecting rod is hinged with the rear foot pole sliding sleeve, and the lower end of the second connecting rod Hinged with forefoot outrigger sleeve.

Or the connecting rod assembly includes a first connecting rod and a second connecting rod whose middle parts are mutually hinged to form an X structure, and the upper ends of the first connecting rod and the second connecting rod are respectively hinged with the upper ends of the front leg strut and the rear leg strut, The lower end of the first connecting rod is hinged with a third connecting rod, the other end of the third connecting rod is hinged with the middle part of the rear foot strut, the lower end of the second connecting rod is hinged with a fourth connecting rod, the fourth connecting rod The other end is hinged with the middle part of the front foot strut.

The locking assembly includes a fixed bayonet on the lower part of the push rod and a movable bayonet on the sliding sleeve of the push rod. When the bayonets overlap, snap into the movable bayonet to lock the locking block of the push rod sliding sleeve.

The locking assembly also includes a fixing block arranged at the lower part of the push rod. The locking block has an L-shaped structure and is hinged to the fixing block at a bend. There is a hook reset part between them, and the other end of the locking block is connected with a linkage for driving the locking block to unlock.

The front linkage rod and the rear linkage rod are arc rods.

The present invention also provides a stroller. The stroller adopts the above-mentioned folding mechanism. Through the connecting rod assembly, the front link and the rear link, it has the characteristics of simple structural design, convenient operation, and rapid retraction, and makes the entire vehicle foldable. Finally, the volume is minimized, which is convenient for people to carry and store when going out.

The present invention is a stroller, which has the folding mechanism of the stroller, including a front wheel assembly, a rear wheel assembly and a push handle, the front wheel assembly is arranged between the lower ends of the two front legs, and the rear wheel assembly is provided Between the lower ends of the two rear legs, the push handle is rotatably connected to the upper ends of the two push rods, and an unlocking control assembly is provided between the end of the push handle and the upper end of the push rod so that the push handle can be turned forward and down Fold to close the push rod and unlock the locking assembly to the push rod sleeve.

The unlocking control assembly includes an upper joint fixedly connected to the end of the push handle, a lower joint fixedly connected to the upper end of the push rod, and a catch block arranged between the upper joint and the lower joint, and the upper joint and the lower joint are connected to each other. Hinged, the inner sides of the upper joint and the lower joint are provided with card slots, and the card block is slidably connected in the card slot. As for the catch block reset part between the catch slots, the side of the upper joint is slid to be provided with an unlocking button for pressing the catch block so that the catch block breaks away from the draw slot on the upper joint.

The unlocking control assembly and the locking assembly are connected through a linkage so that when the upper end of the push handle is folded forward and down, the upper end of the linkage is wound around the upper joint or the lower joint.

Compared with prior art, the present invention has following advantage:

1. A baby carriage folding mechanism of the present invention, through the front linkage rod, rear linkage rod and connecting rod assembly, the push rod, the front foot pole and the rear foot pole are cleverly connected, so that the push rod, the front foot pole and the rear foot pole are folded After being folded, it has the characteristics of minimized volume. At the same time, the baby carriage folding mechanism has the characteristics of simple structural design, smooth unfolding operation, and safe and reliable use.

2. The baby carriage of the present invention has the above baby carriage folding mechanism, so that it has the characteristics of simple structural design, convenient operation, and rapid retraction, and minimizes the volume of the whole bicycle after folding, which is convenient for people to carry and store when going out.

【Description of drawings】

The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is a structural schematic diagram of a first embodiment of a stroller folding mechanism of the present invention;

Fig. 2 is an exploded view of the first embodiment of a stroller folding mechanism of the present invention;

Fig. 3 is a reference diagram of the folding state of the first embodiment of the baby carriage folding mechanism of the present invention;

Fig. 4 is a structural schematic diagram of a second embodiment of a stroller folding mechanism of the present invention;

Fig. 5 is an exploded view of a second embodiment of a stroller folding mechanism of the present invention;

Fig. 6 is a reference diagram of the folding state of the second embodiment of the baby carriage folding mechanism of the present invention;

Fig. 7 is one of the structural schematic diagrams of a baby carriage adopting the first embodiment of the baby carriage folding mechanism of the present invention;

Fig. 8 is the second structural schematic diagram of a baby carriage adopting the first embodiment of the baby carriage folding mechanism of the present invention;

Fig. 9 is a reference diagram of a folding state of a stroller adopting the first embodiment of the stroller folding mechanism of the present invention;

Fig. 10 is one of the structural schematic diagrams of a baby carriage adopting the second embodiment of the baby carriage folding mechanism of the present invention;

Fig. 11 is the second structural schematic diagram of a baby carriage adopting the second embodiment of the baby carriage folding mechanism of the present invention;

Fig. 12 is a reference diagram of a folding state of a stroller adopting the second embodiment of the stroller folding mechanism of the present invention;

Fig. 13 is a structural schematic diagram of an unlocking control assembly in a stroller of the present invention.

Fig. 14 is an exploded view of an unlocking control assembly in a stroller of the present invention.

【detailed description】

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

A baby carriage folding mechanism of the present invention comprises a front foot support rod 1, a rear foot support rod 2 and a push rod 3, the upper end of the rear foot support rod 2 is hinged to the lower end of the push rod 3, and a front linkage rod is hinged at the upper end of the front foot support rod 1 4. The upper end of the rear foot support rod 2 is hinged with a rear linkage rod 5, and the other end of the front linkage rod 4 and the other end of the rear linkage rod 5 are jointly hinged with a push rod sliding sleeve 6 that is slidably connected to the lower part of the push rod 3. The lower part of the push rod 3 is provided with a locking assembly 7 for locking the sliding sleeve 6 of the push rod, and a locking assembly 7 is provided between the upper part of the front foot pole 1 and the rear foot pole 2 when the locking assembly 7 is unlocked. The connecting rod assembly 8 that makes the front leg 1 move closer to the rear leg 2 when turning over to get closer to the rear leg 2 . The push rod 3, the front foot support rod 1 and the rear foot support rod 2 are cleverly connected by the front linkage rod 4, the rear linkage rod 5 and the connecting rod assembly 8. When the push rod 3 can be folded back and down relative to the rear foot support rod 2, When moving closer to the rear foot pole 2, the locking assembly 7 releases the locking state of the push rod sliding sleeve 6, and now the push rod sliding sleeve 6 slides toward the upper end of the push rod 3, and the hinge point between the linkage rod 5 and the rear foot pole 2 is locked. Rotating for the center of the circle, the front linkage rod 4 and the rear linkage rod 5 act on the front foot pole 1 and the rear foot pole 2 respectively, and through the linkage action of the connecting rod assembly 8, the front foot pole 1 is moved closer to the rear foot pole 2. After being folded, it has the characteristics of minimizing the volume. At the same time, the baby carriage folding mechanism has the characteristics of simple structural design, smooth unfolding operation, and safe and reliable use.

As a first embodiment of a stroller folding mechanism of the present invention, as shown in FIGS. 1 to 3 , the connecting rod assembly 8 includes a first connecting rod 81 and a second connecting rod 82 whose middle parts are hinged to form an X structure. , the upper ends of the first connecting rod 81 and the second connecting rod 82 are hinged with the upper ends of the front leg 1 and the rear leg 2 respectively, and the lower ends of the first connecting rod 81 and the second connecting rod 82 are respectively connected with the rear leg The rod 2 is slidably connected to the front leg 1 , that is, the lower ends of the first connecting rod 81 and the second connecting rod 82 are respectively slidably connected to the upper parts of the rear leg 2 and the front leg 1 . When the front foot pole 1 is folded closer to the rear foot pole 2, the lower ends of the first connecting rod 81 and the second connecting rod 82 slide towards the lower ends of the rear foot pole 2 and the front foot pole 1 synchronously respectively, so as to realize the linkage folding action.

In order to ensure that the stroller folding mechanism of the invention is smoothly folded or unfolded, the upper parts of the rear foot pole 2 and the front foot pole 1 are slidably connected with a rear foot pole sliding sleeve 83 and a front foot pole sliding sleeve 84 respectively. The lower end of a connecting rod 81 is hinged with the rear foot support rod sliding sleeve 83, and the lower end of the second connecting rod 82 is hinged with the front foot support rod sliding sleeve 84. When the folding mechanism of the stroller is unfolded, the push rod 3 is turned upwards, and the push rod sliding sleeve 6 slides toward the lower end of the push rod 3 to the locked position, and is locked by the locking assembly 7. When the push rod sliding sleeve 6 is pushed toward When the lower end of the bar 3 slides, the first connecting rod 81 and the second connecting rod 82 hinged into the X structure are opened, and the front foot pole sliding sleeve 84 and the rear foot pole sliding sleeve 83 move towards the front foot pole 1 and the rear foot pole respectively. The upper end of 2 slides, and rear foot strut 2 swings backward, and front leg strut 1 swings forward, and then completes the unfolding action. During the whole folding and unfolding process, the operation is convenient and smooth

As the second embodiment of a stroller folding mechanism of the present invention, as shown in FIGS. 4 to 6 , the connecting rod assembly 8 includes a first connecting rod 81 and a second connecting rod 82 whose middle parts are hinged to form an X structure. , the upper ends of the first connecting rod 81 and the second connecting rod 82 are respectively hinged with the upper ends of the front leg rod 1 and the rear leg rod 2, and the lower end of the first connecting rod 81 is hinged with a third connecting rod 85, and the first connecting rod 81 is hinged with the third connecting rod 85. The other end of the three connecting rods 85 is hinged to the middle part of the rear foot strut 2 , the fourth connecting rod 86 is hinged to the lower end of the second connecting rod 82 , and the other end of the fourth connecting rod 86 is hinged to the middle part of the front leg strut 1 . When the folding mechanism of the stroller is folded, the lock assembly 7 to the push rod sliding sleeve 6 is released, and the push rod 3 is folded backwards and downwards, and the push rod sliding sleeve 6 slides toward the upper end of the push rod 3, And the push rod sliding sleeve 6 is rotated with the hinge point of the rear linkage rod 5 and the rear foot strut 2 as the center of circle. The front linkage rod 4 reacts and pulls the front foot pole 1, so that the front foot pole 1 and the rear foot pole 2 are folded closer, and the hinge point at the lower end of the first connecting rod 81 and the second connecting rod 82 moves downward, so that the fourth linkage The rod 86 moves closer to the second link 82 , and the third link 85 moves closer to the first link 81 .

When the folding mechanism of the stroller is unfolded, the push rod 3 is turned upwards, and the push rod sliding sleeve 6 slides toward the lower end of the push rod 3 to the locked position, and is locked by the locking assembly 7. When the push rod sliding sleeve 6 is pushed toward While the lower end of the rod 3 is sliding, the first connecting rod 81 and the second connecting rod 82 hinged into the X structure are opened, and the hinge point at the lower end of the first connecting rod 81 and the second connecting rod 82 moves upwards, and the fourth connecting rod The rod 86 and the third connecting rod 85 prop up the front foot strut 1 and the rear foot strut 2 respectively, so that the rear leg strut 2 swings backward and the front leg strut 1 swings forward, and then completes the unfolding action.

The locking assembly 7 includes a fixed bayonet 71 arranged on the lower part of the push rod 3 and a movable bayonet 72 arranged on the push rod sliding sleeve 6, and the lower part of the push rod 3 is also provided with a fixed bayonet that can elastically extend out of the fixed bayonet 71. And when the movable bayonet 72 coincides with the fixed bayonet 71, snap into the movable bayonet 72 to lock the locking block 73 of the push rod sliding sleeve 6 .

The locking assembly 7 also includes a fixing block 74 arranged at the lower part of the push rod 3. The locking block 73 has an L-shaped structure and is hinged to the fixing block 74 at a bend. One end of the locking block 73 is provided with a hook 75, so that A hook reset part 76 is provided between the inner side of the hook 75 and the fixed block 74. The hook reset part 76 is a spring, and the hook reset part 76 elastically presses the hook 75 all the time, so that the hook 75 remains stretched out from the fixed bayonet. 71, the other end of the locking block 73 is connected with a link 77 for driving the locking block 73 to unlock, when the link 77 pulls one end of the locking block 73, the hook 75 overcomes the elastic force of the hook reset part 76 and retracts into the fixed card In the opening 71, and from the movable bayonet 72, at this time, the locking state of the push rod sliding sleeve 6 is released, and the folding can be carried out; When the mouths 71 are overlapped, the hook 75 is stuck into the movable bayonet 72 under the elastic force of the hook reset member 76, and then the push rod sliding sleeve 6 is locked.

In order to facilitate folding and unfolding, overcome the dead point of the movement between the rods, and ensure smooth movement, the front linkage rod 4 and the rear linkage rod 5 are arc-shaped rods, which can also achieve the purpose of labor saving.

The present invention also provides a stroller, which adopts the folding mechanism of the stroller, and includes a front wheel assembly 9, a rear wheel assembly 10 and a push handle 11, and the front wheel assembly 9 is arranged between the lower ends of the two front leg struts 1 , the rear wheel assembly 10 is located between the lower ends of the two rear foot struts 2, the push handle 11 is rotatably connected to the upper ends of the two push rods 3, the push handle 11 is in a U-shaped structure, and the push handle 11 An unlocking control assembly 12 is provided between the end and the upper end of the push rod 3 so that the push handle 11 can be folded forward and down to approach the push rod 3 and the lock assembly 7 is released from the locked state of the push rod sliding sleeve 6 .

As shown in Figures 13 and 14, the unlocking control assembly 12 includes an upper joint 121 fixedly connected to the end of the push handle 11, a lower joint 122 fixedly connected to the upper end of the push rod 3, and an upper joint 121 and a lower joint. The locking block 123 between 122, the upper joint 121 and the lower joint 122 are hinged to each other, the inner sides of the upper joint 121 and the lower joint 122 are provided with a locking slot 124, and the locking block 123 is slidably connected to the locking slot In 124, between the lower joint 122 and the locking block 123, a locking block reset member 125 for making the locking block 123 be stuck between the two locking slots 124 at the same time is provided, and the side of the upper joint 121 is slidingly provided for Press the locking block 123 so that the locking block 123 is disengaged from the unlocking button 126 of the locking slot 124 on the upper joint 121 .

In order to make the push handle 11 can only be folded forward when it is folded, a corresponding limit structure is provided between the upper joint 121 and the lower joint 122. For example, the Chinese invention patent name is a stroller, and the patent number is 201010224051.4. Paragraph 42 of the description discloses a limit mechanism, through which the push handle 11 can only be folded forward when the push handle 11 is folded.

The unlocking control assembly 12 and the locking assembly 7 are connected through a linkage 77 so that when the upper end of the push handle 3 is turned forward and down, the upper end of the linkage 77 is wound around the upper joint 121 or the lower joint 122, and the linkage 77 can be flexible. rope or wire. In the embodiment provided by the present invention, the upper end of the linkage member 77 is fixedly connected to the upper joint 121 , and when the upper joint 121 rotates, the linkage member 77 is wound on the upper joint 121 .

The first embodiment of the stroller of the present invention is shown in Figures 7 to 9:

When folding, press the unlocking button 126 with both hands, and the unlocking button 126 will overcome the elastic force of the locking block reset part 125. When the locking block 123 breaks away from the slot 124 on the upper joint 121, the push handle 11 can be turned forward and downward. The upper joint 121 rotates relative to the lower joint 122. When the upper joint 121 rotates, the upper end of the linkage piece 77 is wound around the upper joint 121, and the lower end of the linkage piece 77 pulls one end of the locking block 73, and the locking piece 73 is locked on the other end. The hook 75 overcomes the elastic force of the hook reset part 76 and retracts into the fixed bayonet 71. At this time, the locking state of the push rod sliding sleeve 6 is released, and the push rod 3 is folded backward and downward, and the push rod sliding sleeve 6 Slide toward the upper end of push rod 3, and the hinge point of rear linkage rod 5 and rear foot strut 2 is used as the center of circle for push rod sliding sleeve 6 to rotate, while push rod sliding sleeve 6 slides toward push rod 3 upper end, rear linkage rod 5 Reaction pulls the rear foot strut 2, and the front linkage rod 4 reacts and pulls the front leg strut 1, so that the front leg strut 1 and the rear foot strut 2 are folded closer, and the lower ends of the first connecting rod 81 and the second connecting rod 82 are respectively synchronously facing The lower ends of the rear foot support rod 2 and the front foot support rod 1 slide to realize the linkage folding action.

When unfolding, the push handle 11 is turned upwards and backwards, the upper joint 121 rotates relative to the lower joint 122, and the wound part of the linkage 77 is straightened. When the locking block 123 is stuck on the upper joint 121 and the lower joint 122 When in the slot 124, the push handle 11 completes the unfolding action and locks; during the turning process of the push handle 11, the lower end of the push handle 11 pulls the push rod 3 upwards, and when the push rod 3 is folded upwards, the push rod sliding sleeve 6 Sliding towards the lower end of the push rod 3, the front linkage rod 4 and the rear linkage rod 5 are pushed forward by the push rod sliding sleeve 6, so that the front foot support rod 1 is opened forward accordingly, and the rear foot support rod 2 is opened backward. The pole sliding sleeve 84 and the rear foot pole sliding sleeve 83 slide synchronously towards the upper ends of the rear foot pole 2 and the front foot pole 1 respectively, so that the first connecting rod 81 and the second connecting rod 82 are launched. When sliding to make the movable bayonet 72 coincide with the fixed bayonet 71, the hook 75 pops out and is stuck in the movable bayonet 72, the push rod sliding sleeve 6 is locked, and then the action of launching the whole vehicle is completed.

The second embodiment of the stroller of the present invention is shown in Figure 10 to Figure 12:

When folding, press the unlocking button 126 with both hands, and the unlocking button 126 will overcome the elastic force of the locking block reset part 125. When the locking block 123 breaks away from the slot 124 on the upper joint 121, the push handle 11 can be turned forward and downward. The upper joint 121 rotates relative to the lower joint 122. When the upper joint 121 rotates, the upper end of the linkage 77 is wrapped around the upper joint 121, and the lower end of the linkage 77 pulls one end of the locking block 73, and the hook 75 on the other end of the locking block 73 Then overcome the elastic force of the hook reset part 76 to get off the bayonet 72 and retract in the fixed bayonet 71. At this time, the locked state of the push rod sliding sleeve 6 is released, and the push rod 3 is folded backwards and downwards, and the push rod slides. The sleeve 6 slides toward the upper end of the push rod 3, and the push rod sliding sleeve 6 rotates at the hinge point of the rear linkage rod 5 and the rear foot strut 2 as the center of the circle. When the push rod sliding sleeve 6 slides toward the upper end of the push rod 3, the rear linkage The rod 5 reacts to pull the rear foot pole 2, and the front linkage rod 4 reacts to pull the front foot pole 1, so that the front foot pole 1 and the rear foot pole 2 are folded closer, and the hinge of the first connecting rod 81 and the second connecting rod 82 lower ends The point then moves downwards, so that the fourth connecting rod 86 moves closer to the second connecting rod 82, and the third connecting rod 85 moves closer to the first connecting rod 81, realizing the linkage folding action.

When unfolding, the push handle 11 is turned upwards and backwards, the upper joint 121 rotates relative to the lower joint 122, and the wound part of the linkage 77 is straightened. When the locking block 123 is stuck on the upper joint 121 and the lower joint 122 When in the slot 124, the push handle 11 completes the unfolding action and locks; during the turning process of the push handle 11, the lower end of the push handle 11 pulls the push rod 3 upwards, and when the push rod 3 is folded upwards, the push rod sliding sleeve 6 Sliding towards the lower end of the push rod 3, the front linkage rod 4 and the rear linkage rod 5 are pushed forward by the push rod sliding sleeve 6, so that the front foot support rod 1 is opened forward accordingly, and the rear foot support rod 2 is opened backward, hinged The first connecting rod 81 and the second connecting rod 82 of the X structure are then opened, and the hinge point of the lower ends of the first connecting rod 81 and the second connecting rod 82 moves upwards, through the fourth connecting rod 86 and the third connecting rod 85 Respectively support the front leg 1 and the rear leg 2 to open back, that is, to make the rear leg 2 swing backward and the front leg 1 to swing forward. When the push rod sliding sleeve 6 slides down to make the bayonet When 72 coincides with fixed bayonet mouth 71, hook 75 then ejects and is stuck in the movable bayonet mouth 72, and push rod sliding sleeve 6 is locked, and then completes the action of vehicle launch.

Claims (10)

1. a perambulator closing-folding mechanism, it is characterized in that comprising: forward foot in a step pole (1), rear foot pole (2) and push rod (3), described rear foot pole (2) upper end and push rod (3) lower end hinged, described forward foot in a step pole (1) upper end thereof has front gangbar (4), described rear foot pole (2) upper end thereof has rear gangbar (5), described front gangbar (4) other end and rear gangbar (5) other end are hinged with the push rod sliding sleeve (6) being slidably connected to push rod (3) bottom jointly, described push rod (3) bottom is provided with the locked component (7) for locking push rod sliding sleeve (6), also be provided with between described forward foot in a step pole (1) and the top of rear foot pole (2) when locked component (7) unlocks the connecting rod assembly (8) that rear push-rod (3) upper end down turns down to make forward foot in a step pole (1) draw close to rear foot pole (2) when drawing close rear foot pole (2) backward.

2. a kind of perambulator closing-folding mechanism according to claim 1, it is characterized in that described connecting rod assembly (8) comprises first connecting rod (81) and the second connecting rod (82) that middle part is hinged into X structure, the upper end of described first connecting rod (81) and second connecting rod (82) respectively with the upper end thereof of forward foot in a step pole (1) and rear foot pole (2), the lower end of described first connecting rod (81) and second connecting rod (82) respectively with rear foot pole (2) and forward foot in a step pole (1) sliding block joint.

3. a kind of perambulator closing-folding mechanism according to claim 2, it is characterized in that the top of described rear foot pole (2) and forward foot in a step pole (1) slidably connects rear foot pole sliding sleeve (83) and forward foot in a step pole sliding sleeve (84) respectively, described first connecting rod (81) lower end and rear foot pole sliding sleeve (83) hinged, lower end and the forward foot in a step pole sliding sleeve (84) of described second connecting rod (82) are hinged.

4. a kind of perambulator closing-folding mechanism according to claim 1, it is characterized in that described connecting rod assembly (8) comprises first connecting rod (81) and the second connecting rod (82) that middle part is hinged into X structure, the upper end of described first connecting rod (81) and second connecting rod (82) respectively with the upper end thereof of forward foot in a step pole (1) and rear foot pole (2), described first connecting rod (81) lower end is hinged with third connecting rod (85), described third connecting rod (85) other end and rear foot pole (2) middle part hinged, described second connecting rod (82) lower end is hinged with double leval jib (86), the other end of described double leval jib (86) and forward foot in a step pole (1) middle part hinged.

5. a kind of perambulator closing-folding mechanism according to any one of claim 1-4, it is characterized in that described locked component (7) comprises and be located at determining bayonet socket (71) and being located at the dynamic bayonet socket (72) on push rod sliding sleeve (6) of push rod (3) bottom, described push rod (3) bottom be also provided with can elasticity stretch out determine bayonet socket (71) and when dynamic bayonet socket (72) with determine to snap in dynamic bayonet socket (72) when bayonet socket (71) overlaps to lock the locking block (73) of push rod sliding sleeve (6).

6. a kind of perambulator closing-folding mechanism according to claim 5, it is characterized in that described locked component (7) also comprises the fixed block (74) being located at push rod (3) bottom, described locking block (73) in L-type structure and bending place and fixed block (74) hinged, described locking block (73) one end is provided with snap fit (75), be provided with snap fit return unit (76) between described snap fit (75) inner side and fixed block (74), described locking block (73) other end is connected with the STATEMENT OF FEDERALLY SPONSORED (77) for driving locking block (73) to unlock.

7. a kind of perambulator closing-folding mechanism according to claim 5, is characterized in that described front gangbar (4) and rear gangbar (5) are arc-shaped rod.

8. a perambulator, it is characterized in that the perambulator closing-folding mechanism had described in any one of claim 1-7, comprise front component (9), wheel assembly (10) and handle (11), described front component (9) is located between the lower end of two forward foot in a step poles (1), described wheel assembly (10) is located between the lower end of two rear foot poles (2), described handle (11) is rotatably connected with the upper end of two push rods (3), be provided with between described handle (11) end and push rod (3) upper end and unlock control assembly (12) and make handle (11) can down turn down forward to draw close push rod (3) and make locked component (7) remove lock-out state to push rod sliding sleeve (6).

9. a kind of perambulator according to claim 8, it is characterized in that described unblock control assembly (12) comprises the upper joint (121) be connected with handle (11) end winding support, the hypozygal (122) be fixedly connected with push rod (3) upper end, and the clipping block (123) be located between upper joint (121) and hypozygal (122), described upper joint (121) and hypozygal (122) are hinged, the inner side of described upper joint (121) and hypozygal (122) is equipped with draw-in groove (124), described clipping block (123) is slidably connected in draw-in groove (124), be provided with for making clipping block (123) be stuck in clipping block return unit (125) between two draw-in grooves (124) simultaneously between described hypozygal (122) and clipping block (123), described upper joint (121) side slip is provided with and makes clipping block (123) depart from the unlock button (126) of the draw-in groove (124) on upper joint (121) for pushing up pressure clipping block (123).

10. a kind of perambulator according to claim 8 or claim 9, is characterized in that described unblock control assembly (12) and locked component (7) are connected by STATEMENT OF FEDERALLY SPONSORED (77) and STATEMENT OF FEDERALLY SPONSORED (77) upper end when described handle (3) upper end down turns down forward is wound on upper joint (121) or hypozygal (122).