CN106882217B - Child cart - Google Patents

Abstract

The invention relates to a baby carriage, which comprises a carriage frame with an unfolding state and a folding state and a locking mechanism for locking the carriage frame in the unfolding state, wherein the carriage frame comprises side brackets positioned at two sides of the carriage, each side bracket comprises a front bracket, a rear bracket, a push rod and a sitting rod, a front wheel assembly is arranged at the lower part of the front bracket, a rear wheel assembly is arranged at the lower part of the rear bracket, the upper part of the front bracket and the upper part of the rear bracket are respectively in rotary connection with the push rod, and the front part and the rear part of the sitting rod are respectively in rotary connection with the front bracket and the rear bracket; the frame also comprises a crisscross front support and a bottom support, the upper parts of the front support are respectively connected with the front parts of the seat bars on the two sides in a rotating way, the lower parts of the front support are respectively connected with the lower parts of the front supports on the two sides in a rotating way, the front parts of the bottom support are respectively connected with the front parts of the seat bars on the two sides in a rotating way, the rear parts of the bottom support are respectively connected with the lower parts of the rear supports on the two sides in a rotating way, the whole frame is simple in arrangement, can be folded transversely and longitudinally, and is small in size after being folded.

Description

A children's stroller

Technical field

The invention relates to a children's stroller.

Background technique

At present, stroller products have been widely used. It is indeed much more convenient for people to put children in strollers for outdoor sports. However, when carrying or storing a stroller, we often face the problem that the stroller is large and requires a large space for storage. For example, a stroller under normal use cannot usually be placed in the trunk of a vehicle. Most of the children's strollers in the prior art have a folding function, and some of the children's strollers in the prior art can also be folded in the front, rear, left and right directions, but the shape and structure are slightly monotonous and complex, and the folding principles are different. Not the same, the folding operation is complicated, so it still cannot fully meet the requirements of different users.

Chinese patent CN1608916A discloses a transversely foldable baby carriage, which includes a frame body and wheels arranged below the frame body. The frame body includes side brackets located on both sides. The side brackets include a rear wheel bracket and a rear wheel bracket. The upper end of the push handle is rotatably connected to each other, and the backrest rod is provided on the frame body. A rear cross brace is provided between the two side brackets. The rear cross brace includes a first component and a second component arranged crosswise. The backrest bar Supported by the rear cross brace, the first assembly includes a first upper link and a first lower link, the second assembly includes a second upper link and a second lower link, the first upper link and the second upper link The rods are rotationally connected through a rotation axis, the second lower connecting rod is rotationally connected to the second upper connecting rod, and there is a limiter between the two, and the first lower connecting rod is rotationally connected to the first upper connecting rod. And there is also a limiter between the two. The rear bracket allows the backrest rod to be adjusted as horizontally as possible without affecting the folding of the entire vehicle.

Contents of the invention

The technical problem to be solved by the present invention is to provide a new children's stroller.

In order to solve the above technical problems, a technical solution adopted by the present invention is:

A children's stroller, which can be folded in the front and rear directions, left and right directions, and up and down directions. The stroller includes a stroller frame with an unfolded state and a folded state, and a locking mechanism for locking the stroller frame in the unfolded state. The stroller frame includes side brackets located on both sides of the stroller. The side brackets include a front bracket with a front wheel assembly installed at the lower part, a rear bracket with a rear wheel assembly installed at the lower part, a push rod, and a seat post. The upper and rear parts of the front bracket are The upper part of the bracket is rotatably connected to the push rod respectively, and the front and rear parts of the seat post are rotatably connected to the front bracket and the rear bracket respectively; the stroller frame also includes a front support frame connected and supported between the side brackets on both sides. and a bottom support frame. The front support frame is composed of a first front support rod and a second front support rod that are rotationally connected in the middle. The upper parts of the first front support rod and the second front support rod are respectively connected with the front parts of the seat posts on both sides. Rotation connection, the lower parts of the first front support rod and the second front support rod are rotationally connected with the lower parts of the front brackets on both sides respectively, and the bottom support frame is composed of the first bottom support rod and the second bottom support rod being rotationally connected in the middle. The front parts of the first bottom support pole and the second bottom support pole are respectively rotatably connected to the front parts of the seat posts on both sides, and the rear parts of the first bottom support pole and the second bottom support pole are respectively connected to the lower parts of the rear brackets on both sides. Turn the connection.

Preferably, the front bracket and the bottom bracket are cross-shaped brackets.

Further, the rotation axis between the first front support rod and the second front support rod and between the first bottom support rod and the second bottom support rod extends along the front and rear direction of the cart, in addition to forming side The rotation axis line between the two rotatably connected components of the bracket extends along the left and right directions of the cart.

Preferably, in the unfolded state, the connection between the first bottom support pole, the second bottom support pole and the seat pole is located behind the connection between the first front support pole, the second front support pole and the seat pole, and between the front bracket and the seat pole. In front of the connection point of the seat post, the connection point of the rear bracket and the push rod is located above and behind the connection point of the front bracket and the push rod.

The rotational connection of two components in the present invention includes both the situation where the two components are directly connected to the rotation, and the situation where the two components are indirectly connected to the rotation through at least one other component. As a preferred embodiment of the present invention, the two components are directly connected to each other for rotation, or indirectly connected to each other for rotation through only one third component.

According to a specific and preferred aspect of the present invention, the seat post is rotatably connected to the front bracket and the rear bracket respectively through the rotating shaft, the push rod is rotatably connected to the front bracket and the rear bracket respectively through the rotating shaft, and the first front strut and the second front strut pass through The rotating shaft is rotationally connected, and the first bottom support rod and the second bottom support rod are rotationally connected through the rotating shaft.

According to another specific and preferred aspect of the present invention, the side bracket further includes a first connecting piece and a second connecting piece that are rotatably connected to the lower part of the front bracket and the lower part of the rear bracket respectively through a rotating shaft extending along the left and right directions of the stroller, and a first connecting piece and a second connecting piece respectively connected along the left and right directions of the stroller. The rotating shaft extending in the left and right directions of the cart is rotatably connected to the third connecting piece and the fourth connecting piece on the seat pole; the first connecting piece, the third connecting piece and the first front support pole and the second front support pole are respectively connected by The rotating shaft extending in the front and rear direction of the cart is rotatably connected; the second connecting piece, the fourth connecting piece and the first bottom support rod and the second bottom supporting rod are respectively connected by rotating shafts extending in the front and rear direction of the cart.

Preferably, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are all U-shaped connecting pieces, and the first front support rod, the second front support rod, the first bottom support rod and the second bottom support rod are all U-shaped connection parts. The ends of the support rods are inserted into the inside of the U-shaped opening of each U-shaped connector.

Preferably, the side bracket further includes a limiting mechanism for limiting the rotation angle of the push rod relative to the front bracket. Preferably, the rotational connection point between the rear bracket and the push rod is located above the axial extension line of the front bracket.

Preferably, the push rod has a straight rod section extending in the front and rear direction of the cart, an arc-shaped bending section bent and extended from the lower end of the straight rod section to the lower side, and an arc-shaped bent section connected to the upper end of the straight rod section. In the push rod handle, the lower part of the straight rod section is rotationally connected to the upper end of the rear bracket, and the lower end of the bent section is rotationally connected to the rear end of the front bracket. This structural design not only has a beautiful appearance and can increase the seating space of the stroller, but also helps reduce the folding volume of the stroller in the front and rear directions and makes the folded stroller frame smoother and easier to carry.

Further, when the stroller frame is in a folded state, the front bracket, the rear bracket, and the push rod are close to each other, the first front support rod and the second front support rod rotate toward each other, and the first bottom support rod and the second bottom support rod are rotated toward each other. Rotate and close together, the side brackets on both sides are close to each other, and the stroller frame can stand on the ground through the rear wheel assembly and push rod, and the front wheel assembly is located above the rear wheel assembly.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the structure of the present invention is novel, and the front support frame and the bottom support frame are used for cooperative support, so that the overall stability of the stroller frame is improved, and the entire vehicle is simple to set up. Folding operation is easy. In addition, the frame can be folded both horizontally and vertically. After folding, the frame is small and easy to use, carry, and store.

Description of drawings

Figure 1 is a schematic front structural view of the unfolded state of the children's stroller of the present invention;

Figure 2 is a schematic three-dimensional structural diagram of the unfolded state of the children's stroller of the present invention;

Figure 3 is a schematic diagram of the folded three-dimensional structure of the children's stroller of the present invention;

Figure 4 is a schematic three-dimensional structural diagram of the folded state of the children's stroller of the present invention;

Among them: 1. Side bracket; 11. Front bracket; 110. Front wheel assembly; 12. Rear bracket; 120. Rear wheel assembly; 13. Push rod; 14. Seat post; 15. Block; 21. Front brace; 21a, first front support pole; 21b, second front support pole; 22, bottom support frame; 22a, first bottom support pole; 22b, second bottom support pole; L1, first connecting piece; L2, second connection L3, third connecting piece; L4, fourth connecting piece; D1, first rotating shaft; D2, second rotating shaft; D3, third rotating shaft; D4, fourth rotating shaft; D5, fifth rotating shaft; D6, sixth Rotating axis; D7, seventh rotating axis; D8, eighth rotating axis; D9, ninth rotating axis; D10, tenth rotating axis.

Detailed ways

As shown in Figures 1, 2, 3, and 4, a children's stroller is foldable in the front and rear directions, left and right directions, and up and down directions. The stroller includes a stroller frame with an unfolded state and a folded state. , a locking mechanism for locking the stroller frame in the unfolded state. The stroller frame includes side brackets 1 located on both sides of the stroller. The side brackets 1 include a front bracket 11 with a front wheel assembly 110 installed at the lower end. The rear bracket 12, push rod 13 and seat post 14 of the rear wheel assembly 120 are installed. The upper end of the front bracket 11 and the upper end of the rear bracket 12 are respectively connected with the lower part of the push rod 13. The front and rear parts of the seat post 14 The stroller frame also includes a front support frame 21 and a bottom support frame 22 connected and supported between the side supports 1 on both sides. Specifically, the front support The frame 21 is composed of a first crossed front strut 21a and a second front strut 21b that are rotated and connected in the middle. The upper and lower parts of the two crossed front struts 21a and 21b are the upper and lower parts of the front support frame 21. In the lower part, the bottom support frame 22 is formed by a cross-shaped first bottom support pole 22a and a second bottom support pole 22b that are rotated and connected in the middle. The upper and lower parts of the two crossed bottom support poles 22a and 22b are the bottom support frame 22 The upper and lower parts (in addition, the rotation axis center line between the first front support rod 21a and the second front support rod 21b, and the first bottom support rod 22a and the second bottom support rod 22b is along the front and rear direction of the cart. extension); the upper part of the front support frame 21 is rotatably connected to the front parts of the seat posts 14 on both sides, the lower part of the front support frame 21 is rotatably connected to the lower parts of the front brackets 11 on both sides, and the front part of the bottom support frame 22 is respectively connected to The front parts of the seat posts 14 on both sides are rotatably connected, and the rear parts of the bottom bracket 22 are rotatably connected with the lower parts of the rear brackets 12 on both sides.

In this example, as shown in Figures 2 and 3, the side bracket 1 also includes a first connecting piece L1, a second connecting piece L2, a third connecting piece L3, and a fourth connecting piece L4 that are all U-shaped. The bottoms of the first connecting piece L1 and the second connecting piece L2 are rotationally connected to the lower part of the front bracket 11 and the lower part of the rear bracket 12 through the first rotating shaft D1 and the second rotating shaft D2 respectively; the U-shaped third connecting piece L3 and the fourth connecting piece The bottom of L4 is rotatably connected to the front of the seat post 14 through the third rotating shaft D3 and the fourth rotating shaft D4 respectively; in addition, each end of the front support frame 21 and the bottom support frame 22 is inserted into the U-shaped connector of each U-shaped connector. The inside of the opening is rotatably connected to each U-shaped connector through a rotating shaft extending in the front and rear direction of the cart. Therefore, the front support frame 21 is connected to the front bracket 11 and the seat post through the U-shaped connector L1 and U-shaped connector L3. The bottom bracket 22 is universally rotatably connected to the seat post 14 and the rear bracket 12 through the U-shaped connector L2 and the U-shaped connector L4. Further, the seat post 14 is rotatably connected to the front bracket 11 and the rear bracket 12 through the fifth rotating axis D5 and the sixth rotating axis D6 respectively, and the push rod 13 is connected to the front bracket 11 and the rear bracket 12 through the seventh rotating axis D7 and the eighth rotating axis D8 respectively. Rotation connection, the first front support rod 21a and the second front support rod 21b are rotationally connected through the ninth rotation axis D9, the first bottom support rod 22a and the second bottom support rod 22b are rotationally connected through the tenth rotation axis D10; the first rotation axis D1, The axis lines of the second rotating axis D2, the third rotating axis D3, the fourth rotating axis D4, the fifth rotating axis D5, the sixth rotating axis D6, the seventh rotating axis D7, the eighth rotating axis D8, the ninth rotating axis D9 and the tenth rotating axis D10 are along the The left and right directions of the cart are arranged parallel to each other. As shown in Figures 1 and 2, when the frame is in the unfolded state, the fourth rotating axis D4 is located behind the third rotating axis D3, the fourth rotating axis D4 is located in front of the fifth rotating axis D5, and the eighth rotating axis D8 is located at the seventh rotating axis D7. Rear and upper (that is, the connection point between the rear bracket 12 and the push rod 13 is located above the axial extension line of the front bracket 11).

Further, as shown in Figures 2, 3, and 4, the side bracket 1 also includes a baffle 15 fixedly provided near the front end of the push rod 13 for limiting the rotation angle of the push rod 13 relative to the front bracket 11. When the rack is unfolded, when the push rod 13 is rotated upward to a certain angle (the rotation angle of the push rod 13 relative to the front bracket 11 is less than or equal to 180°), the baffle 15 resists the front bracket 11, and the push rod 13 is relative to the front bracket 11. The push rod 13 cannot continue to rotate, and the push rod 13 is in an unfolded state; the push rod 13 has a straight rod section 130 extending along the front and rear directions of the cart, and an arc-shaped bend formed by bending and extending downward from the lower end of the straight rod section 130. Section 131 and the push rod handle connected to the upper end of the straight section 130, the lower end of the straight section 130 is rotationally connected to the upper end of the rear bracket 12, and the lower end of the bent section 131 is rotationally connected to the upper end of the front bracket 11.

The children's stroller of the present invention, as shown in Figures 2, 3 and 4, when the stroller frame is folded, the locking mechanism is unlocked, the push rod 13 is flipped backward and drives the front bracket 11 to rotate together relative to the rear bracket 12. While the front bracket 11 moves closer to the rear bracket 12, it drives the crisscrossed front bracket 21 and the rear bracket 22 to move closer to the middle from the left and right directions, and to the rear bracket 22 from the front and rear directions. When the center is brought together, the side brackets on both sides are moved toward the center and folded, so that the components of the stroller frame are folded together from the front, rear, left, and right directions. As shown in Figure 4, when the frame is in the folded state, the front bracket 11, the rear bracket 12, and the push rod 13 are close to each other. The front bracket 21 and the bottom bracket 22 are located between the two sides of the side bracket 1 and are connected to the side bracket 1. The two sides of the stroller are close together, and the stroller frame is self-standing on the ground through the rear wheel assembly 120 and the handle of the push rod 13, and the front wheel assembly 110 is located above the rear wheel assembly 120.

In summary, the front support frame 21 and the bottom support frame 22 are used for cooperative support, so that the overall stability of the stroller frame is improved, the entire vehicle is simple to set up, and the folding operation is simple. In addition, the frame can be folded both horizontally and vertically. After folding, the frame is small and easy to carry and store.

The above detailed description of the present invention is intended to enable those familiar with the art to understand the content of the present invention and implement it. This does not limit the scope of protection of the present invention, and the present invention is not limited to the above embodiments. All equivalent changes or modifications made based on the spirit and essence of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A children's shallow, it is all collapsible in fore-and-aft direction, left and right direction and upper and lower direction, the shallow includes the shallow frame that has expansion state and folding state, is used for locking the shallow frame in expansion state locking mechanical system, the shallow frame is including being located shallow both sides side support (1), side support (1) are including front support (11) that front wheel subassembly (110) are installed to the lower part, rear support (12) that rear wheel subassembly (120) are installed to the lower part, push rod (13), seat pole (14), its characterized in that: the upper part of the front bracket (11) and the upper part of the rear bracket (12) are respectively and rotatably connected with the push rod (13), and the front part and the rear part of the sitting rod (14) are respectively and rotatably connected with the front bracket (11) and the rear bracket (12); wherein the push rod (13) is provided with a straight rod section extending along the front-back direction of the cart, an arc-shaped bending section which is bent downwards from the lower end part of the straight rod section and extends to form, the lower end part of the bending section is rotationally connected with the rear end part of the front support (11), the cart frame also comprises a support rod assembly which is connected with and supported between the side supports (1) on the two sides, the support rod assembly consists of a front support rod (21) and a bottom support rod (22), the front support rod (21) is formed by rotationally connecting a first front support rod (21 a) and a second front support rod (21 b) at the middle part, the upper parts of the first front support rod (21 a) and the second front support rod (21 b) are respectively rotationally connected with the front parts of the sitting bars (14) on the two sides, the lower parts of the first front supporting rod (21 a) and the second front supporting rod (21 b) are respectively connected with the lower parts of the front brackets (11) on two sides in a rotating way, the bottom bracket (22) is formed by rotationally connecting a first bottom supporting rod (22 a) and a second bottom supporting rod (22 b) at the middle part, the front parts of the first bottom supporting rod (22 a) and the second bottom supporting rod (22 b) are respectively connected with the sitting rods (14) on two sides in a rotating way, the rear parts of the first bottom supporting rod (22 a) and the second bottom supporting rod (22 b) are respectively connected with the lower parts of the rear brackets (12) on two sides in a rotating way, and in an unfolding state, the first bottom supporting rod (22 a), the connection part of the second bottom support rod (22 b) and the sitting rod (14) is positioned behind the connection part of the first front support rod (21 a), the second front support rod (21 b) and the sitting rod (14), and is positioned in front of the connection part of the front support (11) and the sitting rod (14).

2. The stroller of claim 1, wherein: the rotation axes between the first front strut (21 a) and the second front strut (21 b) and between the first bottom strut (22 a) and the second bottom strut (22 b) extend in the front-rear direction of the cart, and the rotation axes between two members that are rotatably connected among the members constituting the side frame (1) extend in the left-right direction of the cart.

3. The stroller of claim 1, wherein: in the unfolded state, the connection part of the rear bracket (12) and the push rod (13) is positioned at the rear upper part of the connection part of the front bracket (11) and the push rod (13).

4. A stroller according to claim 1, 2 or 3, wherein: the seat rod (14) is respectively connected with the front support (11) and the rear support (12) in a rotating mode through rotating shafts (D5 and D6), the push rod (13) is respectively connected with the front support (11) and the rear support (12) in a rotating mode through rotating shafts (D7 and D8), the first front support rod (21 a) and the second front support rod (21 b) are connected in a rotating mode through rotating shafts (D9), and the first bottom support rod (22 a) and the second bottom support rod (22 b) are connected in a rotating mode through rotating shafts (D10).

5. A stroller according to claim 1, 2 or 3, wherein: the side bracket (1) further comprises a first connecting piece (L1) and a second connecting piece (L2) which are respectively connected to the lower part of the front bracket (11) and the lower part of the rear bracket (12) in a rotating way through rotating shafts (D1, D2) which extend along the left-right direction of the trolley, and a third connecting piece (L3) and a fourth connecting piece (L4) which are respectively connected to the sitting rod (14) in a rotating way through rotating shafts (D3, D4) which extend along the left-right direction of the trolley;

the first connecting piece (L1) and the third connecting piece (L3) are respectively connected with the first front supporting rod (21 a) and the second front supporting rod (21 b) in a rotating way through rotating shafts extending along the front-back direction of the cart; the second connecting piece (L2) and the fourth connecting piece (L4) are respectively connected with the first bottom supporting rod (22 a) and the second bottom supporting rod (22 b) in a rotating mode through rotating shafts extending along the front-back direction of the cart.

6. The stroller of claim 5, wherein: the first connecting piece (L1), the second connecting piece (L2), the third connecting piece (L3) and the fourth connecting piece (L4) are all U-shaped connecting pieces, and the end parts of the first front supporting rod (21 a), the second front supporting rod (21 b), the first bottom supporting rod (22 a) and the second bottom supporting rod (22 b) are respectively inserted into the inner sides of the U-shaped openings of the U-shaped connecting pieces.

7. The stroller of claim 1, wherein: the side bracket (1) further comprises a limiting mechanism for limiting the rotation angle of the push rod (13) relative to the front bracket (11).

8. The stroller of claim 1, wherein: the rotary connection part of the rear bracket (12) and the push rod (13) is positioned above the axial extension line of the front bracket (11).

9. The stroller of claim 1, wherein: the push rod (13) is also provided with a push rod handle connected with the upper end part of the straight rod section, and the lower part of the straight rod section (130) is rotatably connected with the upper end part of the rear bracket (12).

10. The stroller of claim 1, wherein: when the trolley frame is in a folding state, the front support (11), the rear support (12) and the push rod (13) are mutually closed, the first front support rod (21 a) and the second front support rod (21 b) are mutually rotated and closed, the first bottom support rod (22 a) and the second bottom support rod (22 b) are mutually rotated and closed, the side supports (1) on two sides are mutually closed, the trolley frame can be self-supported on the ground through the rear wheel assembly (120) and the push rod (13), and the front wheel assembly (110) is positioned above the rear wheel assembly (120).