CN107757691A - A kind of folding children's barrow - Google Patents

Abstract

The invention relates to a foldable children's pushchair, which comprises a pushcart frame with an unfolded state and a folded state, a locking mechanism for locking the pushcart frame in the unfolded state, respectively arranged at the front bottom and the bottom of the pushcart frame. The front wheel assembly and rear wheel assembly at the rear of the bottom, the cart frame includes side brackets located on both sides of the cart, connected and supported between the side brackets on both sides and foldable along the left and right direction of the cart frame Bottom support frame and rear support frame, side support includes: front support, push handle, rear support, seat post, connecting support bar, seat post can slide along the front support, compared with traditional strollers, the rear support and The seat post is formed by bending a single bar, which has both the functions of the rear bracket and the seat post of the traditional cart, which reduces the interference between the bars during the folding process of the frame, and adopts the bottom bracket and the back support The frame allows the cart to be folded from the front, rear, left, and right directions. After folding, the body is slender, which is especially suitable for storage in narrow and long spaces.

Description

A collapsible stroller for children

technical field

The invention relates to a foldable children's stroller.

Background technique

At present, baby strollers are already a necessary tool for infants and young children to travel. In addition to pursuing the basic requirements of stability and safety of baby carriages, users pay more and more attention to the characteristics of simple overall structure and convenient folding of baby carriages. The children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a front wheel assembly arranged at the front bottom of the stroller frame, and a front wheel assembly arranged at the bottom rear of the stroller frame The rear wheel assembly, the locking mechanism for locking the stroller frame in the unfolded state, and the seat arranged on the stroller frame. There are many types of existing trolley frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different. Some linkage components have complex structures, many rods, and the overall rigidity of the vehicle frame is relatively poor.

Chinese patent CN104044622A discloses a stroller for children. The stroller frame of the stroller includes a front wheel bracket, a rear wheel bracket, a seat post, and a push handle, and the push handle is fixedly arranged on the upper part of the front wheel bracket. The upper part of the rear wheel bracket can slide along the length extension direction of the front wheel bracket and is rotatably connected to the front wheel bracket relative to the front wheel bracket, and one end of the seat post is rotatably connected to the On the front wheel bracket, the other end of the seatpost is rotatably connected to the rear wheel bracket. Although the frame of this car has a certain rigidity, it has many frame rods, and the structure setting is relatively complicated. beautiful.

Contents of the invention

The technical problem to be solved by the present invention is to provide a foldable children's stroller with fewer rods, a compact structure, and a foldable baby stroller that will not retract after being loaded in an unfolded state.

In order to solve the above technical problems, a kind of technical scheme that the present invention adopts is:

A foldable children's pushchair, comprising a pushcart frame with an unfolded state and a folded state, a locking mechanism for locking the pushcart frame in the unfolded state, respectively arranged at the bottom front part and the bottom rear part of the pushcart frame The front wheel assembly and the rear wheel assembly of the cart frame include side brackets located on both sides of the cart, and bottom brackets that are connected and supported between the side brackets on both sides and can be folded along the left and right directions of the cart frame and rear stand, side stand consisting of:

The front bracket is a rod extending upwards and backwards from the front wheel assembly, and the upper end of the front bracket is used for grasping;

a rear bracket, which is a rod extending upward and forward from the rear wheel assembly;

a seatpost, the front of which is connected to the front bracket and the rear of which is connected to the upper end of the rear bracket;

The rear part of the seat post is fixedly connected with the rear bracket or integrally arranged, the front part of the seat post can slide along the length extension direction of the front bracket and is arranged to be rotated relative to the front bracket, and the side bracket also includes an The connecting strut, the upper end of the connecting strut is rotatably connected with the upper part of the front bracket, and the lower end of the connecting strut is rotatably connected with the rear bracket.

Preferably, when the stroller frame is in the unfolded state, the connection between the seat post and the front bracket is located at the front and lower side of the connection between the connecting strut and the front bracket, and the connection between the connecting strut and the rear bracket is located at the connection between the connecting strut and the front bracket The connection between the seat post and the front bracket is located above the connection between the connecting strut and the rear bracket.

Preferably, when the stroller frame is in an unfolded state, the included angle between the connecting struts and the horizontal direction is 80-90°.

Preferably, the seat post is formed by bending and extending the upper end of the rear bracket forward.

Preferably, when the stroller frame is in the unfolded state and the folded state, the seat post is respectively connected to the first position W and the second position W of the front bracket, the first position W is located in the middle of the front bracket, and the second position W is located in the second position of the front bracket. Between a position W and the lower end of the front support.

Preferably, a sliding piece capable of sliding along its length direction is provided on the front bracket, and the seatpost is rotatably connected to the sliding piece, and is arranged to rotate and slide relative to the front bracket through the sliding piece.

Preferably, the front end and the rear end of the bottom bracket are rotatably connected to the lower part of the front bracket and the rear bracket respectively, and the rear bracket is located between the rear brackets on both sides and is rotatably connected to the rear brackets on both sides.

Preferably, the rear support includes: a middle rod, which extends along the up and down direction of the cart; a first upper link and a second upper link, one end of the first upper link and the second upper link are respectively connected to the middle rod The upper end is rotatably connected, and the other end is rotatably connected to the rear brackets on both sides; the first lower link and the second lower link, one end of the first lower link and the second lower link are respectively rotatably connected to the lower part of the middle rod , the other ends are respectively connected to the rear brackets on both sides in rotation; the slider is slidably arranged on the middle rod along the extension direction of the middle rod; the first oblique connecting rod, the second oblique connecting rod, the first oblique connecting rod 1. The lower end of the second oblique link is respectively rotatably connected with the first lower link and the second lower link, and the upper end is rotatably connected with the slide block.

Preferably, the bottom bracket is a cross-structure bottom bracket, including a first bottom bar and a second bottom bar that intersect each other and are rotatably connected at the intersection, and the front parts of the first bottom bar and the second bottom bar are connected to the two sides respectively. The front brackets are rotatably connected; the rear parts of the first bottom bar and the second bottom bar are respectively rotatably connected with the rear brackets on both sides.

Preferably, when the stroller frame is in the folded state, the front wheel assembly and the rear wheel assembly are away from each other along the extension direction of the front bracket; The left and right directions are close together.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

In the children's stroller of the present invention, compared with the traditional stroller, the rear bracket and the seat post are bent and formed by one rod, and one rod has the functions of the rear support and the seat post of the traditional stroller, and the number of rods is reduced and the The interference between the rods in the folding process of the frame is reduced, and the use of the bottom bracket and the rear bracket enables the cart to be folded from the front, rear, left, and right directions. After folding, the body is slender, and the parts are close together and Neatly arranged and small in size, it is especially suitable for storage in narrow and long spaces; in addition, the front wheel assembly is installed at the bottom of the push rod, so that the push rod has the function of the front wheel bracket in the traditional cart, and the overall bar of the cart is further improved. Reduce and avoid excessive connections between too many rods; through connecting the connecting rods between the push rod and the rear bracket, the frame maintains good rigidity, and the overall structure is more stable. Does not adduct.

Description of drawings

Fig. 1 is a three-dimensional structural schematic view of the foldable stroller of the present invention in an unfolded state;

Fig. 2 is a three-dimensional schematic diagram of the decomposed components of the foldable children's stroller frame of the present invention;

Fig. 3 is a schematic diagram of the three-dimensional structure of the foldable children's stroller in a half-folded state of the present invention (rear bracket omitted);

Fig. 4 is a schematic diagram of the three-dimensional structure of the foldable stroller of the present invention in a folded state (the rear bracket is omitted);

Among them: 1. Side bracket; 11. Front bracket; 110. Push handle; 12. Rear bracket; 120. Seat rod; Bottom bar; 3, rear brace; 30, middle bar; 31, first upper link; 32, second upper link; 33, first lower link; 34, second lower link; 35, slider 36, the first oblique connecting rod; 37, the second oblique connecting rod; 38, the handle; 4, the slider; 100, the front wheel assembly; 200, the rear wheel assembly; W1, the first position; W2, the second position.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1 and Figure 2, a foldable children's 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, and a The front wheel assembly 100 and the rear wheel assembly 200 at the bottom front part and the bottom rear part of the frame, the cart frame includes side brackets 1 on both sides of the cart, connected and supported between the side brackets 1 on both sides and can The bottom support frame 2 and the rear support frame 3 folded and folded along the left and right directions of the cart frame;

Specifically, the side support 1 includes: a front support 11, which is a bar extending upwards and backwards from the front wheel assembly (the upper end of the front support 11 is formed with a push handle 110 for human hands); a rear support 12, which is a self- The rear wheel assembly 200 is a rod that extends upwards and forwards; the seatpost 120, its front part is connected to the front bracket 11, and its rear part is connected to the upper end of the rear bracket 12; the connecting strut 13, the connecting strut 13 is located at the rear of the cart And extend along the up and down direction (when the vehicle frame is unfolded, the angle between the connecting strut 13 and the horizontal direction is 80-90°), its upper end is rotatably connected with the upper part of the front bracket 11, and the lower end of the connecting strut 13 The part is rotatably connected with the rear bracket 12.

Further, the rear part of the seatpost 120 is fixedly connected with the rear bracket 12 or integrally arranged (in this example, the seatpost 120 is formed by bending and extending the upper end of the rear bracket 12 forward), and the front part of the seatpost 120 can be formed along the front The length extension direction of the bracket 11 slides and is set to rotate relative to the front bracket 11. Specifically, the front bracket 11 is provided with a slider 4 that can slide along its length direction (in this example, the slider 4 is sleeved on the front bracket. sliding sleeve), the seat post 120 is rotationally connected with the sliding member 4, that is, the seat post 120 realizes a sliding and rotating connection with the front bracket 11 through the sliding member 4. When the stroller frame is in the expanded state and the folded state respectively, the seatpost 120 will slide to different positions on the front bracket 11 following the slider 4, and in the unfolded state, the seatpost 120 will slide to the first position on the front bracket 11 W1: In the folded state, the seat post 120 slides to the second position W2 on the front bracket 11, the first position W1 is located in the middle of the front bracket 11 (see Figure 1), and the second position W2 is located between the first position W1 and the front Between the lower ends of the bracket 11 (see Figure 4).

In addition, as shown in Figures 1 and 2, the front end and rear end of the bottom bracket 2 in this example are rotatably connected to the lower part of the front bracket 11 and the rear bracket 12 respectively, and the rear bracket 3 is located on the rear bracket 12 on both sides. Between, and with the rear bracket 12 on both sides of the rotation connection; Specifically: the rear bracket 3 includes: the middle rod 30, the middle rod 30 extends along the up and down direction of the cart; the first upper link 31 and the second upper link 32 One end of the first upper link 31 and the second upper link 32 are rotatably connected with the upper end of the middle rod 30 respectively, and the other ends are rotatably connected with the rear brackets 12 on both sides respectively; the first lower link 33 and the second lower link Connecting rod 34, one end of the first lower connecting rod 33 and the second lower connecting rod 34 are rotatably connected with the bottom of the middle rod 30 respectively, and the other ends are respectively rotatably connected with the rear brackets 12 on both sides; The extension direction of the rod 30 can be slidably arranged on the middle rod 30; the first oblique connecting rod 36, the second oblique connecting rod 37, and the lower ends of the first oblique connecting rod 36 and the second oblique connecting rod 37 are connected with the first lower connecting rod respectively. Rod 33 and second lower connecting rod 34 are rotationally connected, and the upper end is rotationally connected with slide block 35 (in this example, rear support frame 3 is provided with and is used for pulling rear support frame 3 folds that is fixedly connected at the bottom end of middle rod 30 handle 38). The bottom support frame 2 is a cross structure bottom support frame 2, including a first bottom bar 21 and a second bottom bar 22 that intersect each other and are rotatably connected at the intersection. The front parts of the first bottom bar 21 and the second bottom bar 22 are respectively It is rotatably connected with the front brackets 11 on both sides; the rear parts of the first bottom bar 21 and the second bottom bar 22 are respectively rotatably connected with the rear brackets 12 on both sides.

As shown in Figure 1, when the stroller frame is in the unfolded state, the locking mechanism locks the frame, the front bracket 11 and the rear bracket 12 are mutually deployed and stand on the ground through the front wheel assembly 100 and the rear wheel assembly 200 respectively, and the rear The seat post 120 fixedly connected to the bracket 12 and its upper end, the front bracket 11 and the connecting strut 13 are mutually expanded; The joints are respectively located at the front and bottom of the connection between the connecting strut 13 and the front bracket 11, the joint of the seat post 120 and the front bracket 11 is located at the front and upper side of the connecting strut 13 and the rear bracket 12, and the connecting strut 13 and the horizontal The angle between the directions is 80-90°.

1 to 4, when the cart frame is folded, the locking mechanism is unlocked, and the handle 38 on the rear bracket 3 is grasped to move upward, and the middle rod 30 of the rear bracket 3 moves upward to drive the components of the rear bracket 3 from The two sides of the vehicle frame are folded closer to the middle, that is, the rear brackets 12 on both sides are moved closer to the middle from the two sides of the vehicle frame, and the bottom bracket 2 and other components in the side bracket 1 are moved closer to the middle. When the handle 38 on the rear bracket 3 moves upwards to drive the rear bracket 12 to move closer to the middle, it will also apply a force to the lower end of the rear bracket 12 to turn backwards and upwards, that is, the seat post 120 (the seat post and the rear support are The same part) will rotate relative to the front bracket 11. Since the seat post 120 is connected to the front bracket 11 by rotating and sliding, when it rotates, it will slide forward along the front bracket 11 (always slide to the second position W2) That is, the seat post 120 of the rear bracket 12 and its upper end gradually moves closer to the front bracket 11 from the rear of the front bracket 11, so far, the folding process of the whole stroller is completed, and the vehicle frame turns to the folded state.

As shown in Figure 4, when the cart frame is in the folded state, the front wheel assembly 100 and the rear wheel assembly 200 are away from each other along the direction in which the front bracket 11 extends; They extend along the extension direction of the front bracket 11 and are close together in the left and right directions.

To sum up, the children’s stroller of the present invention, compared with the traditional stroller, the rear bracket and the seat post are bent and formed by one rod, and one rod has both the functions of the rear bracket and the seat post of the traditional stroller. It also reduces the interference between the rods during the folding process of the frame, and the use of the bottom bracket and the rear bracket enables the cart to be folded from the front, rear, left, and right directions. After folding, the body is slender and the parts are Close together and neatly arranged, small in size, especially suitable for storage in narrow and long spaces; in addition, the front wheel assembly is installed at the bottom of the push rod, so that the push rod has the function of the front wheel bracket in the traditional cart, and the cart as a whole The rods are further reduced to avoid too many connections between too many rods; through the connecting rod between the push rod and the rear bracket, the frame maintains good rigidity and the overall structure is more stable. It does not adduct when loaded.

The present invention has been described in detail above, and its purpose is to allow those skilled in the art to understand and implement the content of the present invention, and cannot limit the protection scope of the present invention with this, and the present invention is not limited to the above-mentioned embodiments. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A collapsible children's stroller, comprising a stroller frame with an unfolded state and a folded state, a locking mechanism for locking the stroller frame in the unfolded state, respectively arranged at the bottom front and bottom of the pushcart frame Front wheel assembly (100) and rear wheel assembly (200) at the rear, the cart frame includes side brackets (1) located on both sides of the cart, side brackets (1) connected and supported on the two sides Between the bottom bracket (2) and the rear bracket (3) that can be folded along the left and right directions of the cart frame, the side bracket (1) includes: A front bracket (11), which is a rod extending upwards and backwards from the front wheel assembly, and the upper end of the front bracket (11) is used for grasping; a rear bracket (12), which is a rod extending upward and forward from the rear wheel assembly (200); A seatpost (120), the front part of which is connected to the front bracket (11), and the rear part of which is connected to the upper end of the rear bracket (12); It is characterized in that: the rear part of the seat post (120) is fixedly connected or integrated with the rear bracket (12), and the front part of the seat post (120) can extend along the length of the front bracket (11) The side bracket (1) also includes a connecting strut (13) arranged behind the trolley and extending in the up and down direction, and the connecting strut ( 13) The upper end is rotatably connected to the upper part of the front bracket (11), and the lower end of the connecting strut (13) is rotatably connected to the rear bracket (12). 2. The foldable children's stroller according to claim 1, characterized in that: when the stroller frame is in the unfolded state, the connection between the seat post (120) and the front bracket (11) is located at the connecting point. The front and lower part of the connection between the strut (13) and the front bracket (11), the connection between the connecting strut (13) and the rear bracket (12) is located at the connection between the connecting strut (13) and the front bracket (11) Below, the joint between the seat post (120) and the front bracket (11) is located above the front of the joint between the connecting strut (13) and the rear bracket (12). 3. The foldable children's stroller according to claim 1, characterized in that: when the stroller frame is in the unfolded state, the included angle between the connecting strut (13) and the horizontal direction is 80-90 °. 4. The foldable stroller for children according to claim 1, characterized in that: the seat post (120) is formed by bending and extending the upper end of the rear bracket (12) forward. 5. The foldable children's stroller according to claim 1, characterized in that, when the stroller frame is in the unfolded state and the folded state respectively, the seat post (120) is respectively connected to the front bracket (11 ), the first position (W1) is located in the middle of the front bracket (11), and the second position (W2) is located in the first position ( W1) and the lower end of the front bracket (11). 6. The foldable baby stroller according to any one of claims 1 to 5, characterized in that: the front bracket (11) is provided with a slider (4) capable of sliding along its length direction, the The seatpost (120) is rotatably connected to the sliding piece (4) and is arranged to rotate and slide relative to the front bracket (11) through the sliding piece (4). 7. The foldable stroller for children according to claim 1, characterized in that: the front end and rear end of the bottom bracket (2) are respectively connected to the lower part of the front bracket (11) and the rear bracket (12) Rotationally connected, the rear bracket (3) is located between the rear brackets (12) on both sides, and is rotationally connected to the rear brackets (12) on both sides. 8. The foldable stroller for children according to claim 7, characterized in that: the rear support (3) comprises: a middle rod (30), the middle rod (30) extends along the up and down direction of the cart; The first upper link (31) and the second upper link (32), one end of the first upper link (31) and the second upper link (32) are respectively connected with the upper end of the middle rod (30) The part is rotationally connected, and the other end is respectively rotationally connected with the rear brackets (12) on both sides; The first lower link (33) and the second lower link (34), one end of the first lower link (33) and the second lower link (34) are respectively connected to the lower part of the middle rod (30) connected by rotation, and the other end is respectively connected by rotation to the rear brackets (12) on both sides; a slider (35), which is slidably arranged on the middle rod (30) along the extension direction of the middle rod (30); The first oblique connecting rod (36) and the second oblique connecting rod (37), the lower ends of the first oblique connecting rod (36) and the second oblique connecting rod (37) are connected with the first lower connecting rod (33) respectively ) is rotationally connected with the second lower link (34), and the upper end is rotationally connected with the slider (35). 9. The foldable baby stroller according to claim 7, characterized in that: the bottom bracket (2) is a cross structure bottom bracket (2), including first The bottom bar (21) and the second bottom bar (22), the front parts of the first bottom bar (21) and the second bottom bar (22) are respectively rotatably connected with the front brackets (11) on both sides; The rear parts of the first bottom bar (21) and the second bottom bar (22) are respectively rotatably connected with the rear brackets (12) on both sides. 10. The foldable children's stroller according to claim 1, characterized in that: when the stroller frame is in the folded state, the front wheel assembly (100) and the rear wheel assembly (200) are (11) The extension directions are far away from each other; the rods in the side bracket (1), bottom bracket (2), and rear bracket (3) extend along the extension direction of the front bracket (11) and are closely spaced in the left and right directions move closer.