CN211995810U - a children's stroller - Google Patents

Abstract

The utility model discloses a children's shallow, including the frame, the frame includes left side support, right side support, and left side support and right side support all include: a first chassis; the second underframe is a telescopic rod assembly and comprises an upper rod and a lower rod connected with the upper rod in a sliding manner; the 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 rotationally connected, and the third part is rotationally connected with at least one of the two parts; the support rod is rotatably connected with the lower rod through a first shaft, the upper rod is provided with a guide groove, the first shaft is inserted in the guide groove, and the first shaft is in sliding connection with the guide groove; one end part of the first connecting rod is rotatably connected with the first underframe; one end of the second connecting rod is rotatably connected with the other end of the first connecting rod, and the other end of the second connecting rod is rotatably connected with the upper rod; the sliding piece is connected with the second connecting rod in a sliding mode, and the support rod is connected with the sliding piece.

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 lower rod are rotatably connected through a first shaft, and the upper A guide groove extending in the extending direction of the rod, the first shaft is inserted in the guide groove, and the first shaft is slidably connected with the guide groove; a push rod, the lower part of the push rod is respectively connected to the 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 one end of the first link The second link is rotatably connected with the lower part of the first chassis through a second shaft; the second link extends in the front-rear direction in the unfolded state of the frame, and one end of the second link The other end of the first link is rotatably connected with the other end of the first link through a third shaft, and the other end of the second link is rotatably connected with the upper rod; a sliding piece, the sliding piece is connected with the second link The rod is slidably connected in the front-rear direction, and the lower part of the strut is connected with the slider; in the unfolded state of the vehicle frame, one of the first chassis and the second chassis moves from the front It extends backwards and upwards, and the other extends backwards and forwards and upwards.

Further, the lower part of the strut and the slider are rotatably connected through a fourth shaft, and in the unfolded state of the frame, the fourth shaft is located below the first shaft;

Further, the strut is fixedly connected with the sliding member, and the second connecting rod is provided with a chute extending in the front-rear direction and matched with the sliding member.

Further, the upper end portion of the first chassis is rotatably connected to the upper end portion of the upper rod through a fifth shaft, and the lower end portion of the side rod is rotatably connected to the upper end portion of the upper rod through a sixth shaft. In the unfolded state of the frame, the sixth axle is located above the fifth axle.

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

Further, an included angle α is formed between the first chassis and the side rod, and the angle range of the included angle α is 135°-180°.

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.

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 side view of the frame of the stroller of the present utility model in the transition process between the unfolded state and the first folded state (Embodiment 1);

4 is a perspective view of the frame of the stroller of the present utility model in the transition process between the unfolded state and the first folded state (Embodiment 1);

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

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

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

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

9 is a side view of the frame of the stroller of the present utility model in the unfolded state (Embodiment 2);

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

11 is a perspective view of the frame of the stroller of the present invention from another perspective (Example 2) in the unfolded state;

12 is a side view of the frame of the stroller of the present invention in the process of transition between the unfolded state and the first folded state (Embodiment 2);

FIG. 13 is a perspective view of the frame of the stroller of the present invention during the transition process between the unfolded state and the first folded state (Example 2).

The symbols in the figure are:

1a: first wheel assembly; 1b, second wheel assembly; 2a, left bracket; 2b, right bracket; 3a, first crossbar; 3b, second crossbar; 3c, upper crossbar; 3d, connecting rod crossbar rod; 4, the first chassis; 5a, the upper rod; 5b, the lower rod; 6, the side rod; 7, the strut; 8, the push rod; 9, the first link; 10, the second link; 11, Slider; 12. Guide groove; 41. First axis; 42, Second axis; 43 Third axis; 44, Fourth axis; 45, Fifth axis; 46, Sixth axis; 51, One axis; 52 , one or two axes; 53, one or three axes; 54, one or four axes; 61, two one axes; 62, two or two axes; 63, two or three axes; 64, two or 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. 1-8 , 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. A lower locking mechanism, and a seat provided on a frame, the frame includes a left bracket 2a located on the left side, a right bracket 2b located on the right side, and a left bracket 2a and a right bracket 2b connected The connecting frame between the left and right brackets 2a and 2b includes:

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, specifically in this embodiment, the upper end of the first chassis 4 is rotationally connected to the upper end of the upper rod 5a through the fifth shaft 45, and the lower end of the side rod 6 is connected to the upper end of the upper rod 5a through the sixth shaft 46. The upper end is rotatably connected, and in the unfolded state of the frame, the sixth shaft 46 is located above the fifth shaft 45;

The support rod 7, the support rod 7 and the lower rod 5b are rotatably connected through the first shaft 41, the upper rod 5a is provided with a guide groove 12 extending along the extending direction of the upper rod 5a, and the first shaft 41 is inserted in the guide groove 12, The first shaft 41 is slidably connected with the guide groove 12;

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. In this embodiment, the push rod 8 is a telescopic rod assembly, and the push rod 8 includes an upper push rod and a The lower push rod is below the push rod and is slidably connected with the upper push rod, and the lower part of the lower push rod is rotatably connected with the upper end of the side rod 6 and the upper end of the support rod 7;

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 rear end of the first link 9 are rotatably connected by the third shaft 43, The rear end of the second connecting rod 10 is rotatably connected with the upper rod 5a;

Sliding member 11, the sliding member 11 is slidably connected with the second connecting rod 10 in the front-rear direction, and the lower part of the strut 7 is connected with the sliding member 11. Specifically, in this embodiment, the sliding member 11 is a sliding sleeve, and the sliding member 11 is sleeved on the first On the second link 10, the lower part of the strut 7 and the sliding member 11 are rotatably connected through the fourth shaft 44, and in the unfolded state of the frame, the fourth shaft 44 is located below the first shaft 41, of course, the sliding member 11 can also be It is a sliding pin, and the sliding pin is fixedly or rotatably connected with the lower part of the strut 7 , and the second connecting rod 10 is provided with a sliding groove extending in the front-rear direction and matched with the sliding pin.

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 6-8, 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 shafts 64. As shown in Figures 6-7, when the frame is in the second folded state, the one shaft 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-right direction is smaller than the width of the second wheel assembly 1b in the left-right direction, so as shown in FIG. 5 , in the first folded state of the frame, the first The wheel assembly 1a is folded on the inner side of 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. As shown in Figure 3-4, the push rod 8 drives the side rod 6 to move backward and downward around the sixth axis 46. Rotating, the push rod 8 drives the support rod 7 to rotate backward and downward around the first shaft 41, and moves closer to the second chassis, and the support rod 7 drives the first shaft 41 to slide up in the guide groove 12 from bottom to top. 7 is rotatably connected with the lower rod 5b around the first shaft 41, thereby driving the lower rod 5b to slide relative to the upper rod 5a from bottom to top, so that the length of the second chassis is shortened, and at the same time, the support rod 7 drives the sliding member 11 in the second connecting rod. The rod 10 slides from the back to the front, the second chassis, the first chassis 4, the first connecting rod 9, and the second connecting rod 10 move closer to each other, as shown in FIG. The 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 along the left and right direction. In this way, the whole stroller is more square in the first folded state, which is convenient for storage and transportation; when the frame is converted from the first folded state to the second folded state, the left bracket 2a and the right bracket 2b are connected relative to the connecting frame. 90-degree inversion is performed, as shown in Figures 6-8, to reach the second folded state. At this time, the axis line of the axle of the second wheel assembly 1b extends along the front-rear direction, preferably the axle of the first wheel assembly 1a. The heart line 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.

Conversely, when the frame is switched from the first folded state to the unfolded state, the strut 7 drives the lower rod 5b to slide relative to the upper rod 5a from top to bottom, so that the length of the second chassis is elongated.

Example 2

As shown in FIGS. 9-13 , the difference between this embodiment and Embodiment 1 is that in this embodiment, the first underframe extends from the rear to the front and upwards in an unfolded state of the frame, and the second underframe is located on the side of the frame. Extending obliquely from front to rear and upward in the unfolded state, 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 and the lower part of the first chassis 4 are rotatably connected through the second shaft 42 , and the rear end of the second link 10 and the front end of the first link 9 through the third shaft 43 is rotatably connected, and the front end of the second link 10 is rotatably connected with the upper rod 5a.

When the frame of the stroller is converted from the unfolded state to the first folded state, the push rod 8 is pressed down. As shown in Figures 12-13, the push rod 8 drives the side rod 6 to move forward and downward around the sixth axis 46 Rotating, the push rod 8 drives the support rod 7 to rotate forward and downward around the first shaft 41, and moves closer to the second chassis, and the support rod 7 drives the first shaft 41 to slide up in the guide groove 12 from bottom to top. 7 is rotatably connected with the lower rod 5b around the first shaft 41, thereby driving the lower rod 5b to slide relative to the upper rod 5a from bottom to top, so that the length of the second chassis is shortened, and at the same time, the support rod 7 drives the sliding member 11 in the second connecting rod. The rod 10 slides from front to back, and the second chassis, the first chassis 4, the first connecting rod 9, and the second connecting rod 10 move closer to each other to reach the first folded state;

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 (10)

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 lower rod through a first shaft, a guide groove extending along the extending direction of the upper rod is formed in the upper rod, the first shaft is inserted into the guide groove, and the first shaft is slidably connected with the guide groove;

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 the deployed state of the frame, one end of the second link being rotatably connected to the other end of the first link by a third shaft, the other end of the second link being rotatably connected to the upper rod;

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

2. The stroller of claim 1, wherein: the lower part of vaulting pole with the slider passes through the fourth axle and rotates to be connected, and under the expansion state of frame, the fourth axle is located the below of primary shaft.

3. The stroller of claim 1, wherein: the support rod is fixedly connected with the sliding piece, and a sliding groove which extends along the front-back direction and is matched with the sliding piece is formed in the second connecting rod.

4. The stroller of claim 1, wherein: the upper end of the first chassis is rotatably connected with the upper end of the upper rod through a fifth shaft, the lower end of the side rod is rotatably connected with the upper end of the upper rod through a sixth shaft, and the sixth shaft is located above the fifth shaft in the unfolded state of the frame.

5. 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.

6. The stroller of claim 1, wherein: an included angle alpha is formed between the first bottom frame and the side rods, and the included angle alpha ranges from 135 degrees to 180 degrees.

7. 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.

8. The stroller of claim 7, 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.

9. The stroller of claim 7, 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.

10. The stroller of claim 9, 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.

Images