CN211995808U - a children's stroller - Google Patents

Abstract

The utility model discloses a children's stroller, which comprises a vehicle frame. The vehicle frame includes a left bracket and a right bracket. Both the left bracket and the right bracket include a first bottom bracket, a second bottom bracket, and a second bottom bracket. It includes an upper rod and a lower rod that is slidably connected up and down with the upper rod; a side rod, two of the three parts of the upper end of the first chassis, the upper end of the upper rod, and the lower end of the side rod are rotatably connected, and the first The three parts are rotatably connected with at least one of the two parts; the strut, the strut is rotatably connected with the upper rod; the push rod, the lower part of the push rod is rotatably connected with the upper end of the side rod and the upper end of the strut; the first connecting rod, one end of the first connecting rod is rotatably connected with the lower part of the first chassis; second connecting rod, one end of the second connecting rod is rotatably connected with the first connecting rod, and the other end of the second connecting rod is connected with the upper The rod is rotatably connected; the connecting piece, the upper part of the connecting piece is rotatably connected with the lower part of the strut, and the lower part of the connecting piece is rotatably connected with the second connecting rod.

Description

a children's stroller

technical field

The utility model relates to the field of children's products, in particular to a children's stroller.

Background technique

In order to facilitate the carrying and storage of children's strollers in the prior art, the strollers are often foldable. There are many types of existing children's strollers, the number of poles of the stroller frame is different, and the connection positions between the poles are different, so the folding principle and folding method are different, and the effect after folding is also different. At the same time, the length of the folded front support or the rear support of the cart in the prior art is too long, which will result in a larger overall volume of the cart.

SUMMARY OF THE INVENTION

The purpose of the present utility model is to overcome the defects in the prior art, and provide an improved stroller for children. The front bracket or the rear bracket of the stroller is retractable, so that the folded stroller has a smaller volume.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a child stroller, comprising a frame having an unfolded state and a first folded state, a first wheel assembly, a second wheel assembly, a A locking mechanism locked in the deployed state, and a seat provided on the frame, the frame including a left bracket on a left side portion, a right side bracket on a right side portion, and a seat connected to the The connecting frame between the left bracket and the right bracket, the left bracket and the right bracket both include: a first chassis, the lower end of the first chassis and the first wheel assembly connection; a second base frame, the second base frame is a telescopic rod assembly, the second base frame includes an upper rod and a lower rod arranged below the upper rod and connected with the upper rod in an up-down sliding manner, the The lower end of the lower rod is connected with the second wheel assembly; the side rod, the upper end of the first chassis, the upper end of the upper rod, and two of the three parts of the lower end of the side rod One component is rotatably connected, and the third component is rotatably connected with one of the two components; a strut, the strut and the upper rod are rotatably connected through a first shaft; a push rod, the lower parts of the push rod are respectively The upper end of the side bar and the upper end of the strut are rotatably connected; a first link, the first link extends in the front-rear direction in the unfolded state of the frame, and the first link One end of the rod is rotatably connected with the lower part of the first chassis through a second shaft; a second link, the second link extends in the front-rear direction in the unfolded state of the frame, and the second link extends in the front-rear direction. One end of the rod is rotatably connected with the first link through a third shaft, and the other end of the second link is rotatably connected with the upper rod; a connecting piece, the connecting piece is deployed in the frame The upper part of the connecting piece and the lower part of the strut are connected in rotation through a fourth shaft, and in the unfolded state of the frame, the fourth shaft is located below the first shaft , the lower part of the connecting piece is rotatably connected with the second link; in the unfolded state of the vehicle frame, one of the first chassis and the second chassis is parallel from front to rear It extends upwards and the other extends from the back to the front and upwards.

Further, the first wheel assembly is a front wheel assembly, and the second wheel assembly is a rear wheel assembly.

Further, the stroller further includes a device for driving the lower rod to slide upward relative to the upper rod when the frame is converted from the unfolded state to the first folded state, or/and when the A driving mechanism for driving the lower rod to slide downward relative to the upper rod when the frame is converted from the first folded state to the unfolded state.

Further, the upper rod is slidably inserted in the lower rod or the lower rod is slidably inserted in the upper rod, and the driving mechanism is arranged between the upper rod and the upper rod. An elastic piece between the lower rods, the elastic piece is used to provide the elastic force required for the lower rod to slide downward relative to the upper rod.

Further, the drive mechanism is a drive rod, the drive rod extends in the front-rear direction in the unfolded state of the vehicle frame, one end of the drive rod is rotatably connected to the lower rod, and the other side of the drive rod is rotatably connected. One end portion is rotatably connected with the first link through a fifth shaft, and the third shaft is located between the second shaft and the fifth shaft.

Further, the driving mechanism is a driving rod, the driving rod extends in the front-rear direction in the unfolded state of the frame, one end of the driving rod is rotatably connected with the lower rod, and the driving rod is rotatably connected to the lower rod. In the unfolded state, below the first shaft, the other end of the driving rod is rotatably connected with the lower part of the strut or with the connecting piece.

Further, the drive rod is rotatably connected to the lower rod through a sixth shaft, the upper rod is provided with a guide groove extending along the extending direction of the upper rod, and the sixth shaft is slidably arranged on the guide in the slot.

Further, the connecting frame includes: a first cross bar, one end of the first cross bar is connected with the first chassis of the left side support through a one-to-one axis rotation, and the other end of the first cross bar The second crossbar is connected with the first chassis of the right bracket through two-axis rotation; one end of the second crossbar is connected with the second chassis of the left bracket through a two-axis rotation , the other end of the second crossbar is connected with the second chassis of the right bracket through two-axis rotation; the upper crossbar, one end of the upper crossbar is connected with the push rod of the left bracket Through a three-axis rotational connection, the other end of the upper crossbar is connected with the push rod of the right side bracket through two-three-axis rotational connection; the frame also has a second folded state, when the frame is When the first folded state is converted to the second folded state, the left bracket is folded and turned around the one-one-axis, the one-two-axis, and the one-three-axis respectively relative to the connecting frame, and the right The side brackets are respectively folded and turned around the two-one axis, the two-two axis, and the two-three axis relative to the connecting frame.

Further, one end of the second crossbar is connected with the upper rod of the left bracket through a two-axis rotation, and the other end of the second crossbar and the upper rod of the right bracket are connected by two or two. Shaft rotation connection.

Further, when the frame is in the second folded state, the axis line of the one-axle axis, the axis line of the one-two axis and the axis line of the one-three axis In parallel, the axis line of the two-axis and the axis of the two-axis are parallel to the axis of the two-third axis; or the axis of the one-axis, The axes of the one and two axes coincide with the axes of the one and three axes, and the axes of the two axes and the two axes are the same as the axes of the two axes. The axes of the three axes coincide.

Further, the connecting frame also includes a connecting rod crossbar, one end of the connecting rod crossbar is connected with the strut of the left bracket through a four-axis rotation, and the other end of the connecting rod crossbar is connected by a four-axis rotation. It is connected with the strut of the right side bracket through two or four axes. When the frame is in the second folded state, the axis line of the one axis and the The axis line, the axis line of the one-three axis and the axis line of the one-four axis are parallel or coincident, and the corresponding axis line of the two-one axis, the two-two axis The axis lines of the second and third axes are parallel to or coincide with the axis lines of the second and fourth axes.

The purpose of this utility model is to provide another stroller for children.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a child stroller, comprising a frame having an unfolded state and a first folded state, a first wheel assembly, a second wheel assembly, a A locking mechanism locked in the deployed state, and a seat provided on the frame, the frame including a left bracket on a left side portion, a right side bracket on a right side portion, and a seat connected to the A connecting frame between the left bracket and the right bracket, characterized in that, both the left bracket and the right bracket include: a first chassis, the lower end of the first chassis is connected to the The first wheel assembly is connected; the second chassis, the second chassis is a telescopic rod assembly, the second chassis includes an upper rod and a lower rod disposed below the upper rod and slidably connected with the upper rod up and down a rod, the lower end of the lower rod is connected with the second wheel assembly; a side rod, the upper end of the first chassis, the upper end of the upper rod, and the lower end of the side rod are three parts Among them, two parts are rotatably connected, and the third part is rotatably connected with one of the aforementioned two parts; strut, the strut and the upper rod are rotatably connected through the first shaft; push rod, the push rod The lower part of the rod is respectively rotatably connected with the upper end of the side rod and the upper end of the strut; a first link, the first link extends in the front-rear direction in the unfolded state of the frame, and all the One end of the first link is connected with the lower part of the first chassis through a second shaft in rotation; the second link extends in the front-rear direction in the unfolded state of the frame, so One end of the second connecting rod is rotatably connected to the first connecting rod through a third shaft, and the other end of the second connecting rod is rotatably connected to the upper rod; The second link is slidably connected in the front-rear direction, and the lower part of the strut is connected with the connecting piece; in the unfolded state of the vehicle frame, the first bottom frame and the second bottom frame are One extends obliquely from front to rear and upward, and the other extends obliquely from rear to front and upward.

Further, the lower part of the strut is rotatably connected with the connecting member through a fourth shaft, and the fourth shaft is located below the first shaft in the unfolded state of the vehicle frame.

Further, the lower part of the strut is fixedly connected with the connecting piece.

Further, the stroller further includes a device for driving the lower rod to slide upward relative to the upper rod when the frame is converted from the unfolded state to the first folded state, or/and when the A driving mechanism for driving the lower rod to slide downward relative to the upper rod when the frame is converted from the first folded state to the unfolded state.

Further, the connecting frame includes: a first cross bar, one end of the first cross bar is connected with the first chassis of the left side support through a one-to-one axis rotation, and the other end of the first cross bar The second crossbar is connected with the first chassis of the right bracket through two-axis rotation; one end of the second crossbar is connected with the second chassis of the left bracket through a two-axis rotation , the other end of the second crossbar is connected with the second chassis of the right bracket through two-axis rotation; the upper crossbar, one end of the upper crossbar is connected with the push rod of the left bracket Through a three-axis rotational connection, the other end of the upper crossbar is connected with the push rod of the right side bracket through two-three-axis rotational connection; the frame also has a second folded state, when the frame is When the first folded state is converted to the second folded state, the left bracket is folded and turned around the one-one-axis, the one-two-axis, and the one-three-axis respectively relative to the connecting frame, and the right The side brackets are respectively folded and turned around the two-one axis, the two-two axis, and the two-three axis relative to the connecting frame.

Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art: the stroller of the present utility model is easy to fold and unfold, which is convenient for consumers to use, and the second chassis is set to be telescopic The rod assembly makes the folded structure more compact.

Description of drawings

Accompanying drawing 1 is the side view (Example 1) of the frame of the stroller of the present invention in the unfolded state;

Accompanying drawing 2 is the perspective view (Example 1) of the frame of the stroller of the present utility model in the unfolded state;

3 is a perspective view (Example 1) of another perspective view of the frame of the stroller of the present invention in an unfolded state;

4 is a side view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Embodiment 1);

5 is a perspective view of the frame of the stroller of the utility model during the transition between the unfolded state and the first folded state (Example 1);

6 is a perspective view of the frame of the stroller of the present invention from another perspective during the transition between the unfolded state and the first folded state (Example 1);

7 is a perspective view of the frame of the stroller of the present invention in the first folded state (Example 1);

8 is a perspective view of the frame of the stroller of the present invention from another perspective in the first folded state (Example 1);

9 is a perspective view of the frame of the stroller of the present invention in the second folded state (Example 1);

10 is a perspective view of the frame of the stroller of the present invention from another perspective in the second folded state (Example 1);

11 is a front view of the frame of the stroller of the present invention in the second folded state (Example 1);

12 is a side view of the frame of the stroller of the present invention in an unfolded state (Example 2);

13 is a perspective view of the frame of the stroller of the present invention in an unfolded state (Example 2);

14 is a side view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Example 2);

15 is a perspective view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Example 2);

16 is a perspective view of the frame of the stroller of the present invention in the first folded state (Example 2);

17 is a perspective view of the frame of the stroller of the present invention from another perspective in the first folded state (Example 2);

18 is a perspective view of the frame of the stroller of the present invention in the second folded state (Example 2);

19 is a perspective view of the frame of the stroller of the present invention from another perspective in the second folded state (Example 2);

20 is a front view of the frame of the stroller of the present invention in the second folded state (Embodiment 2);

21 is a side view of the frame of the stroller of the present invention in an unfolded state (Embodiment 3);

22 is a perspective view of the frame of the stroller of the present invention in an unfolded state (Example 3);

23 is a side view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Embodiment 3);

24 is a perspective view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Embodiment 3);

25 is a side view of the frame of the stroller of the present invention in an unfolded state (Embodiment 4);

26 is a perspective view of the frame of the stroller of the present invention in an unfolded state (Example 4);

27 is a perspective view of the frame of the stroller of the present invention in an unfolded state (Example 5);

Fig. 28 is a side sectional view (Embodiment 6) of the frame of the stroller of the present invention in the unfolded state;

Fig. 29 is a side view of the frame of the stroller of the present invention in the unfolded state (Embodiment 7);

30 is a perspective view of the frame of the stroller of the present invention in an unfolded state (Embodiment 7);

31 is a side view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Embodiment 7);

FIG. 32 is a perspective view of the frame of the stroller of the present invention during the transition between the unfolded state and the first folded state (Embodiment 7).

The symbols in the figure are:

1a, the first wheel assembly; 1b, the second wheel assembly; 2a, the left bracket; 2b, the right bracket; 3a, the first crossbar; 3b, the second crossbar; 3c, the upper crossbar; 3d, the connecting rod Cross bar; 4. The first chassis; 5a, the upper bar; 5b, the lower bar; 6, the side bar; 7, the strut; 8, the push bar; 9, the first link; 10, the second link; 11 , connecting piece; 12, driving rod; 13, guide groove; 14, elastic piece; 41, first shaft; 42, second shaft; 43, third shaft; 44, fourth shaft; 45, fifth shaft; 46 , sixth axis; 51, one and one axis; 52, one two axis; 53, one three axis; 54, one four axis; 61, two one axis; 62, two two axis; 63, two three axis; 64, two Four axes.

Detailed ways

The technical solutions of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in FIGS. 1-11 , the stroller of the present embodiment includes a frame having an unfolded state and a first folded state, a first wheel assembly 1a, a second wheel assembly 1b, and is used to lock the frame in the unfolded state. The lower locking mechanism (not shown in the figure), and the seat provided on the frame, the frame includes a left bracket 2a located on the left side, a right bracket 2b located on the right side, and is connected to the left bracket The connecting frame between 2a and the right bracket 2b, both the left bracket 2a and the right bracket 2b include:

The first chassis 4, the lower end of the first chassis 4 is connected with the first wheel assembly 1a;

The second chassis, the second chassis is a telescopic rod assembly, the second chassis includes an upper rod 5a and a lower rod 5b arranged below the upper rod 5a and connected to the upper rod 5a in a sliding up and down manner, the lower end of the lower rod 5b is connected with the first rod 5b. The two wheel assemblies 1b are connected. In this embodiment, the first underframe 4 extends from the front to the rear and tilts upwards in the unfolded state of the frame, and the second underframe extends from the rear to the front and tilts upwards in the unfolded state of the frame. The first wheel assembly 1a is a front wheel assembly, and the second wheel assembly 1b is a rear wheel assembly;

Two of the three parts of the side rod 6, the upper end of the first chassis 4, the upper end of the upper rod 5a, and the lower end of the side rod 6 are rotatably connected, and the third part is connected with the two parts. A rotational connection, in this embodiment, it is preferable to set the upper end of the first chassis 4 to be rotationally connected to the upper end of the upper rod 5a, and the lower end of the side rod 6 to be rotationally connected to the upper end of the upper rod 5a;

The strut 7, the strut 7 and the upper rod 5a are rotatably connected through the first shaft 41;

The push rod 8, the lower part of the push rod 8 is respectively connected with the upper end of the side rod 6 and the upper end of the strut 7 in rotation;

the first link 9, the first link 9 extends in the front-rear direction in the unfolded state of the frame, and the front end of the first link 9 is rotatably connected with the lower part of the first chassis 4 through the second shaft 42;

The second link 10, the second link 10 extends in the front-rear direction in the unfolded state of the frame, the front end of the second link 10 and the first link 9 are rotatably connected through the third shaft 43, the second link 10 The rear end of the swivel is rotatably connected with the upper rod 5a;

The connecting piece 11, the connecting piece 11 is slidably connected with the second link 10 in the front-rear direction, the lower part of the strut 7 is connected with the connecting piece 11, when the connecting piece 11 is slidably connected with the second link 10, the connecting piece 11 is connected with the strut The connection mode of the lower part of the strut 7 can be a fixed connection or a rotating connection. Specifically, in this embodiment, the connecting piece 11 is a sliding sleeve, and the lower part of the strut 7 and the connecting piece 11 are rotatably connected through the fourth shaft 44, and are connected at the bottom of the frame. The fourth shaft 44 is located below the first shaft 41 in the unfolded state.

The stroller also includes a device for driving the lower rod 5b to slide upward relative to the upper rod 4a when the frame is converted from the unfolded state to the first folded state, or/and for driving when the frame is converted from the first folded state to the unfolded state A driving mechanism in which the lower rod 5b slides downward relative to the upper rod 5a. In this embodiment, the driving mechanism is a driving rod 12. The driving rod 12 extends in the front-rear direction in the unfolded state of the frame. The rear end of the driving rod 12 is connected to the lower rod. 5b is rotatably connected by the sixth shaft 46, the front end of the drive rod 12 and the first connecting rod 9 are rotatably connected by the fifth shaft 45, and the third shaft 43 is located between the second shaft 42 and the fifth shaft 45, optimally, The upper rod 5a is provided with a guide groove 13 extending along the extending direction of the upper rod 5a, the sixth shaft 46 is slidably arranged in the guide groove 13, and the setting of the driving rod 12 enables the second chassis to slide on the driving rod when the frame is folded. 12 is driven to shorten synchronously, and when the frame is unfolded, the second underframe can be simultaneously extended under the driving of the driving rod 12 .

The connection frame includes:

For the first cross bar 3a, one end of the first cross bar 3a is rotatably connected to the first chassis 4 of the left bracket 2a through a shaft 51, and the other end of the first cross bar 3a is connected to the first base frame 4 of the right bracket 2b. The base frame 4 is rotatably connected by two one shafts 61;

The second cross bar 3b, one end of the second cross bar 3b is connected with the upper bar 5a of the second bottom frame of the left bracket 2a through a two shaft 52, and the other end of the second cross bar 3b is connected with the right bracket 2b The upper rod 5a of the second chassis is rotatably connected through the second and second shafts 62;

The upper cross bar 3c, one end of the upper cross bar 3c is connected with the push rod 8 of the left bracket 2a through a three-axis 53, and the other end of the upper cross bar 3c is connected with the push rod 8 of the right bracket 2b through two or three axes. 63 turn connection;

The frame also has a second folded state. When the frame is converted from the first folded state to the second folded state, the left bracket 2a is respectively folded and turned around the one-axis 51, one-two-axis 52, and one-three-axis 53 relative to the connecting frame. , the right side bracket 2b is folded and turned around the two-one axis 61, the two-two axis 62, and the two-three axis 63 respectively relative to the connecting frame.

As shown in Figures 9-11, when the frame is in the second folded state, the axis lines of the one-axle 51, the axis line of the two-axle 52 and the axis line of the three-axle 53 are parallel, and the two-axle axis The axis line of 61, the axis line of the second axis 62 and the axis line of the second axis 63 are parallel; The axis lines of the second and third axles 61 coincide, and the axis lines of the second and second axles 62 and the second and third axles 63 coincide, so that the left bracket 2a is in the second folded state of the frame. The right side bracket 2b can be closer to the connecting frame.

In order to make the frame more stable in the unfolded state, it is preferable that the connecting frame further comprises a connecting rod cross bar 3d, and one end of the connecting rod cross bar 3d is rotatably connected with the strut 7 of the left bracket 2a through a four-axis 54, The other end of the connecting rod cross bar 3d is connected with the strut 7 of the right bracket 2b through the two or four axles 64. As shown in Fig. 9-11, when the frame is in the second folded state, the axles of the one axle 51 The center line, the axis line of one or two shafts 52, and the axis line of one three shaft 53 are parallel to or coincide with the axis line of one four shaft 54. The axis lines of the second and third shafts 63 are parallel to or coincide with those of the second and fourth shafts 64 .

On the premise of not increasing the length of the first underframe 4, the second underframe is set as a telescopic rod assembly, so that in the unfolded state of the vehicle frame, the length of the second underframe is elongated, which is beneficial to the wide arrangement of the bottom of the vehicle frame The basket is used for placing sundries, and the height of the seat on the frame from the horizontal plane where the stroller is placed is also correspondingly increased. As shown in Figure 1, an angle α is formed between the first chassis 4 and the side bar 6 , the angle range of the included angle α is 135 degrees-180 degrees, and the preferred angle of the included angle α is 160 degrees.

In this embodiment, in the unfolded state of the frame, the width of the first wheel assembly 1a in the left and right directions is smaller than the width of the second wheel assembly 1b in the left and right directions, so as shown in Figures 7-8, in the first folded state of the frame, The first wheel assembly 1a is folded inside the second wheel assembly 1b, so that the folded volume of the stroller in the first folded state is smaller, and it is also beneficial to be further folded into the second folded state.

When the frame of the stroller is converted from the unfolded state to the first folded state, the push rod 8 is pressed down, and the push rod 8 drives the side rod 6 to rotate backward and downward around the rotational connection point with the upper end of the upper rod 5a. The push rod 8 drives the support rod 7 to rotate backwards and downwards around the first shaft 41, and moves closer to the second chassis, the support rod 7 drives the connecting piece 11 to slide from the back to the front on the second link 10, and the second chassis Move closer to the first chassis 4, drive the first connecting rod 9, the second connecting rod 10 and the driving rod 12 to move closer to each other, and the driving rod 12 drives the lower rod 5b to slide upward relative to the upper rod 5a, so that the length of the second chassis is shortened, As shown in Figures 7-8, the first folded state is reached. At this time, the first wheel assembly 1a is folded between the second wheel assemblies 1b on the left and right sides, and the axis line of the axle of the second wheel assembly 1b extends along the left and right directions. Preferably, the axis line of the axle of the first wheel assembly 1a also extends in the left-right direction, so that the whole stroller is more square in the first folded state, which is convenient for storage and transportation; the frame is folded from the first folded state to the second folded state When the state is changed, the left bracket 2a and the right bracket 2b are turned inward by 90 degrees relative to the connecting frame, as shown in Figure 9-11, to reach the second folded state. At this time, the axle of the second wheel assembly 1b axle The center line extends in the front-rear direction, preferably the axle center line of the first wheel assembly 1a also extends in the front-rear direction, so that the entire stroller is more square in the first folded state, which is convenient for storage and transportation.

On the contrary, when the frame is converted from the first folded state to the unfolded state, the driving rod 12 drives the lower rod 5b to slide downward relative to the upper rod 5a, so that the length of the second chassis is elongated.

Example 2

As shown in Figures 12-20, the difference between this embodiment and Embodiment 1 is that the connecting member 11 in this embodiment is a connecting rod. The connecting member 11 extends in the up-down direction in the unfolded state of the frame. The upper part and the lower part of the strut 7 are rotatably connected by a fourth shaft 44, and in the unfolded state of the frame, the fourth shaft 44 is located below the first shaft 41, and the lower part of the connecting piece 11 is rotatably connected with the second link 10;

When the frame of the stroller is converted from the unfolded state to the first folded state, the push rod 8 is pressed down, and the push rod 8 drives the side rod 6 to rotate backward and downward around the rotational connection point with the upper end of the upper rod 5a. The push rod 8 drives the support rod 7 to rotate backward and downward around the first axis 41, the support rod 7 drives the connecting piece 11 to rotate forward and downward around the fourth axis 44, and the second chassis moves closer to the first chassis 4, driving the first chassis 4. The first connecting rod 9, the second connecting rod 10, the connecting piece 11, and the driving rod 12 are close to each other, and the driving rod 12 drives the lower rod 5b to slide upward relative to the upper rod 5a, so that the length of the second chassis is shortened, as shown in Figure 16-17 shown, the first folded state is reached.

Example 3

As shown in FIGS. 21-24 , the main difference between this embodiment and Embodiment 1 lies in the difference in the driving mechanism and the difference in the connecting piece 11 .

Specifically, the connecting member 11 in this embodiment is a sliding pin, and the second connecting rod 10 is provided with a sliding groove portion that cooperates with the sliding pin. 11 and the second connecting rod 10 are slidably connected along the front-rear direction, and the sliding pin is rotatably connected or fixedly connected with the strut 7 .

The driving mechanism is a driving rod 12. The driving rod 12 extends in the front-rear direction in the unfolded state of the frame, and the rear end of the driving rod 12 is rotatably connected to the lower rod 5b. Below, the front end of the drive rod 12 is rotatably connected with the lower part of the strut 7 or with the connecting piece 11 . In this embodiment, the front end of the drive rod 12 is rotatably connected with the lower part of the strut 7 around the connecting piece 11 , that is, the sliding pin.

Example 4

As shown in Figures 25-26, the main difference between this embodiment and Embodiment 1 lies in the difference in the driving mechanism. Specifically, the driving mechanism in this embodiment is the driving rod 12, and the driving rod 12 is in the unfolded state of the frame along the Extending in the front-rear direction, the rear end of the drive rod 12 is rotatably connected to the lower rod 5b, the front end of the drive rod 12 is rotatably connected to the lower part of the stay 7, and the drive rod 12 and the stay 7 rotate in the unfolded state of the frame The connection point is below the fourth axis 44 .

Example 5

As shown in FIG. 27 , the main difference between this embodiment and Embodiment 1 lies in the difference in the driving mechanism. Specifically, the driving mechanism in this embodiment is the driving rod 12 , and the driving rod 12 is in the front-rear direction in the unfolded state of the frame. Extending, the rear end of the drive rod 12 is rotatably connected to the lower rod 5b, the front end of the drive rod 12 is rotatably connected to the lower part of the strut 7, and the rotational connection point of the drive rod 12 and the strut 7 in the unfolded state of the frame Above the fourth axis 44 .

Example 6

As shown in FIG. 28 , the main difference between this embodiment and Embodiment 1 is the driving mechanism. The upper rod 5a is slidably inserted into the lower rod 5b or the lower rod 5b is slidably inserted into the upper rod 5a. In this embodiment, the lower rod 5b is slidably inserted into the upper rod 5a, and the driving mechanism is an elastic member 14 disposed between the upper rod 5a and the lower rod 5b. The elastic member 14 is used to provide the lower rod 5b relative to the upper rod. 5a Elastic force required to slide down.

Example 7

As shown in Figures 29-32, the main difference between this embodiment and Embodiment 1 is that in this embodiment, the first bottom frame extends from the rear to the front and upwards in an unfolded state of the frame, and the second bottom frame is located on the frame. The first wheel assembly 1a is a rear wheel assembly, and the second wheel assembly 1b is a front wheel assembly.

Correspondingly, the rear end of the first link 9 is rotatably connected to the lower part of the first chassis 4 through the second shaft 42 , and the rear end of the second link 10 is rotatably connected to the first link 9 through the third shaft 43 . , the front end of the second link 10 is rotatably connected with the upper rod 5a; the front end of the driving rod 12 is rotatably connected with the lower rod 5b through the sixth shaft 46, and the rear end of the driving rod 12 is connected with the first link 9 through the fifth The shaft 45 is rotatably connected.

When the frame of the stroller is converted from the unfolded state to the first folded state, the push rod 8 is pressed down, and the push rod 8 drives the side rod 6 to rotate forward and downward around the rotational connection point with the upper end of the upper rod 5a. The push rod 8 drives the support rod 7 to rotate forward and downward around the first axis 41, and moves closer to the second chassis. The push rod 8 drives the connecting piece 11 to slide from front to back on the second connecting rod 10, and the second chassis Moving toward the first chassis 4 drives the first link 9, the second link 10 and the drive rod 12 to move closer to each other, and the drive rod 12 drives the lower rod 5b to slide upward relative to the upper rod 5a, so that the length of the second chassis is shortened.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the technology to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention with this. All equivalent changes or modifications made according to the spirit of the present invention shall be included within the protection scope of the present invention.

Claims (16)

1. A stroller comprising a frame having an expanded state and a first collapsed state, a first wheel assembly, a second wheel assembly, a locking mechanism for locking the frame in the expanded state, and a seat disposed on the frame, the frame comprising a left side frame at a left side portion, a right side frame at a right side portion, and a connecting frame connected between the left side frame and the right side frame, wherein the left side frame and the right side frame each comprise:

a first chassis having a lower end connected to the first wheel assembly;

the second underframe is a telescopic rod assembly and comprises an upper rod and a lower rod which is arranged below the upper rod and is in up-and-down sliding connection with the upper rod, and the lower end part of the lower rod is connected with the second wheel assembly;

the side rod comprises a first chassis, a second chassis, a third chassis, a first side rod, a second side rod, a third side rod and a third side rod, wherein the first side rod is rotatably connected with the second chassis;

the support rod is rotatably connected with the upper rod through a first shaft;

the lower part of the push rod is respectively and rotatably connected with the upper end parts of the side rods and the upper end parts of the support rods;

a first link extending in a front-rear direction in an unfolded state of the frame, and having one end rotatably connected to a lower portion of the first chassis via a second shaft;

a second link extending in the front-rear direction in an unfolded state of the frame, one end of the second link being rotatably connected to the first link by a third shaft, and the other end of the second link being rotatably connected to the upper bar;

the connecting piece extends in the vertical direction in the unfolded state of the frame, the upper part of the connecting piece is rotatably connected with the lower part of the support rod through a fourth shaft, the fourth shaft is positioned below the first shaft in the unfolded state of the frame, and the lower part of the connecting piece is rotatably connected with the second connecting rod;

in a deployed state of the vehicle frame, one of the first and second undercarriages extends obliquely upward from front to rear, and the other extends obliquely upward from rear to front.

2. The stroller of claim 1, wherein: the first wheel assembly is a front wheel assembly and the second wheel assembly is a rear wheel assembly.

3. The stroller of claim 1, wherein: the child stroller also comprises a driving mechanism which is used for driving the lower rod to slide upwards relative to the upper rod when the frame is switched from the unfolding state to the first folding state, or/and is used for driving the lower rod to slide downwards relative to the upper rod when the frame is switched from the first folding state to the unfolding state.

4. The stroller of claim 3, wherein: the upper rod is slidably inserted into the lower rod or the lower rod is slidably inserted into the upper rod, the driving mechanism is an elastic piece arranged between the upper rod and the lower rod, and the elastic piece is used for providing elastic force required by the lower rod to slide downwards relative to the upper rod.

5. The stroller of claim 3, wherein: the driving mechanism is a driving rod, the driving rod extends along the front-back direction in the unfolding state of the frame, one end part of the driving rod is connected with the lower rod in a rotating mode, the other end part of the driving rod is connected with the first connecting rod in a rotating mode through a fifth shaft, and the third shaft is located between the second shaft and the fifth shaft.

6. The stroller of claim 3, wherein: the driving mechanism is a driving rod, the driving rod extends along the front-back direction in the unfolding state of the frame, one end of the driving rod is rotatably connected with the lower rod, and the other end of the driving rod is rotatably connected with the lower part of the support rod or the connecting piece below the first shaft in the unfolding state of the frame.

7. The stroller of claim 5 or 6, wherein: the driving rod is connected with the lower rod in a rotating mode through a sixth shaft, a guide groove extending along the extending direction of the upper rod is formed in the upper rod, and the sixth shaft is arranged in the guide groove in a sliding mode.

8. Child stroller according to any of claims 1 to 6, wherein the connection frame comprises:

one end of the first cross rod is rotatably connected with the first underframe of the left side support through a one-shaft, and the other end of the first cross rod is rotatably connected with the first underframe of the right side support through a two-shaft;

one end of the second cross rod is rotatably connected with the second underframe of the left side support through a two-shaft joint, and the other end of the second cross rod is rotatably connected with the second underframe of the right side support through a two-shaft joint;

one end of the upper cross rod is rotationally connected with the push rod of the left side support through a three-axis, and the other end of the upper cross rod is rotationally connected with the push rod of the right side support through a two-three-axis;

the frame still has the second folding state, works as the frame by first folding state to when the second folding state changes, the left side support is relative the link is wound respectively one, two axles a three-axis is folding upset, the right side support is relative the link is wound respectively two one, two axles two three-axis is folding upset.

9. The stroller of claim 8, wherein: one end of the second cross rod is rotatably connected with the upper rod of the left side support through a two-shaft, and the other end of the second cross rod is rotatably connected with the upper rod of the right side support through a two-shaft.

10. The stroller of claim 8, wherein: when the frame is in the second folded state, the axial lead of the first shaft, the axial lead of the second shaft and the axial lead of the first shaft are parallel, and the axial lead of the second shaft, the axial lead of the second shaft and the axial lead of the second shaft are parallel; or the axial lead of the one shaft, the axial lead of the two shafts and the axial lead of the one shaft coincide, and the axial lead of the two shafts coincide.

11. The stroller of claim 10, wherein: the link still includes the connecting rod horizontal pole, a tip of connecting rod horizontal pole with the vaulting pole of left side support rotate through a four-axis and connect, another tip of connecting rod horizontal pole with the vaulting pole of right side support rotate through two four-axes and connect, work as the frame be in under the second folding state, the axial lead of one axle, the axial lead of two axles a triaxial the axial lead with the axial lead of a four-axis parallel or coincide mutually, corresponding the axial lead of two axles two axial leads two triaxial the axial lead with the axial lead of two four-axes parallel or coincide mutually.

12. A stroller comprising a frame having an expanded state and a first collapsed state, a first wheel assembly, a second wheel assembly, a locking mechanism for locking the frame in the expanded state, and a seat disposed on the frame, the frame comprising a left side frame at a left side portion, a right side frame at a right side portion, and a connecting frame connected between the left side frame and the right side frame, wherein the left side frame and the right side frame each comprise:

a first chassis having a lower end connected to the first wheel assembly;

the second underframe is a telescopic rod assembly and comprises an upper rod and a lower rod which is arranged below the upper rod and is in up-and-down sliding connection with the upper rod, and the lower end part of the lower rod is connected with the second wheel assembly;

the side rod comprises a first chassis, a second chassis, a third chassis, a first side rod, a second side rod, a third side rod and a third side rod, wherein the first side rod is rotatably connected with the second chassis;

the support rod is rotatably connected with the upper rod through a first shaft;

the lower part of the push rod is respectively and rotatably connected with the upper end parts of the side rods and the upper end parts of the support rods;

a first link extending in a front-rear direction in an unfolded state of the frame, and having one end rotatably connected to a lower portion of the first chassis via a second shaft;

a second link extending in the front-rear direction in an unfolded state of the frame, one end of the second link being rotatably connected to the first link by a third shaft, and the other end of the second link being rotatably connected to the upper bar;

the connecting piece is connected with the second connecting rod in a sliding mode along the front-back direction, and the lower portion of the support rod is connected with the connecting piece;

in a deployed state of the vehicle frame, one of the first and second undercarriages extends obliquely upward from front to rear, and the other extends obliquely upward from rear to front.

13. The stroller of claim 12, wherein: the lower part of vaulting pole with the connecting piece passes through the fourth axle and rotates to be connected, and is in under the expansion state of frame the fourth axle is located the below of primary shaft.

14. The stroller of claim 12, wherein: the lower part of the stay bar is fixedly connected with the connecting piece.

15. The stroller of claim 12, wherein: the child stroller also comprises a driving mechanism which is used for driving the lower rod to slide upwards relative to the upper rod when the frame is switched from the unfolding state to the first folding state, or/and is used for driving the lower rod to slide downwards relative to the upper rod when the frame is switched from the first folding state to the unfolding state.

16. Child stroller according to any of the claims 12 to 15, wherein the connection frame comprises:

one end of the first cross rod is rotatably connected with the first underframe of the left side support through a one-shaft, and the other end of the first cross rod is rotatably connected with the first underframe of the right side support through a two-shaft;

one end of the second cross rod is rotatably connected with the second underframe of the left side support through a two-shaft joint, and the other end of the second cross rod is rotatably connected with the second underframe of the right side support through a two-shaft joint;

one end of the upper cross rod is rotationally connected with the push rod of the left side support through a three-axis, and the other end of the upper cross rod is rotationally connected with the push rod of the right side support through a two-three-axis;

the frame still has the second folding state, works as the frame by first folding state to when the second folding state changes, the left side support is relative the link is wound respectively one, two axles a three-axis is folding upset, the right side support is relative the link is wound respectively two one, two axles two three-axis is folding upset.

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