CN206826725U - A kind of children trolley - Google Patents

Abstract

The utility model relates to a stroller for children, which comprises a stroller frame with an unfolded state and a folded state, and a locking mechanism for locking the pushcart frame in the unfolded state. The bracket, the side bracket includes a front bracket on which the front wheel assembly is installed at the lower end, a push rod and a seat post on which the rear wheel assembly is installed on the lower end, and the stroller frame also includes and is connected and supported between the side brackets on both sides. The bottom support frame and the rear support frame can be folded along the left and right directions of the stroller frame. Compared with the traditional stroller, the children's stroller of the utility model installs the rear wheel assembly on the lowermost end of the push rod. The function of the rear wheel bracket in the pushcart has fewer rods in the whole pushcart, which reduces the interference between the rods in the folding process of the frame, and improves the overall stability of the vehicle body.

Description

a stroller for children

technical field

The utility model 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 and many rods, which are prone to interference during folding.

Utility model content

The technical problem to be solved by the utility model is to provide an improved stroller for children.

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

A stroller for children, comprising a stroller frame having an unfolded state and a folded state, a locking mechanism for locking the stroller frame in the unfolded state, front wheels respectively arranged at the bottom front and the bottom rear of the stroller frame Components and rear wheel assembly, the cart frame includes side brackets located on both sides of the cart, the side brackets include front brackets, push rods and seat bars with front wheel assemblies installed at the lower end, and rear wheel assemblies are installed at the lower end of the push rod On the top, the upper end of the front bracket is connected to the push rod so that it can rotate and slide relative to the push rod, and the front and rear parts of the seat rod are respectively connected to the front bracket and the push rod in rotation;

The cart frame also includes a bottom bracket and a rear bracket that are connected and supported between the side brackets on both sides and can be folded and folded along the left and right directions of the cart frame. The front part of the seat bar is rotatably connected with the lower part of the push rod, and the upper end and the lower end of the rear brace are rotatably connected with the push rods on both sides.

Preferably, the push rod includes a straight rod section extending in the up and down direction and a handle arranged at the upper end of the straight rod section for people to hold. The assembly is arranged at the lower end of the straight rod section.

Preferably, the stroller frame further includes a slide piece slidably arranged on the push rod, and the upper end of the front bracket is rotatably connected with the slide piece.

Preferably, when the cart frame is in the unfolded state and the folded state, the upper end of the front bracket is respectively connected to the first position and the second position of the push rod, and the second position is between the first position and the upper end of the push rod .

Preferably, the locking mechanism includes a locking pin on the push rod that slides in the radial direction, and a lock hole on the slider that cooperates with the locking pin, and the locking mechanism also includes a locking pin that tends to An elastic member that moves in the direction of the keyhole.

Preferably, the rear support includes:

Middle rod, the middle rod extends along the up and down direction of the cart;

The first upper link and the second upper link, one end of the first upper link and the second upper link are respectively rotatably connected to the upper end of the middle rod, and the other ends are respectively rotatably connected to the push rods 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, and the other ends are respectively rotatably connected to the push rods on both sides;

a slider, which is slidably arranged on the middle rod along the extending direction of the middle rod;

The first oblique connecting rod and the second oblique connecting rod, the lower ends of the first oblique connecting rod and the second oblique connecting rod are rotatably connected with the first lower connecting rod and the second lower connecting rod respectively, and the upper ends are rotatably connected with the slide block.

Preferably, the rear bracket further includes a first connecting block fixedly arranged on the upper end of the middle pole, and the trolley further includes a handle fixedly or rotationally connected to the first connecting block.

Preferably, the bottom bracket is a double 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 a third bottom bar and a third bottom bar that are intersected and are rotatably connected at the intersection. The fourth bottom bar, the lower part of the first bottom bar and the fourth bottom bar are rotatably connected, and the upper parts of the first bottom bar and the fourth bottom bar are respectively rotatably connected with the seat bars on both sides; the second bottom bar and the third bottom bar The upper part of the bottom bar is rotatably connected, and the lower parts of the second bottom bar and the third bottom bar are respectively rotatably connected with the lower parts of the push rods on both sides.

Preferably, the axis of rotation between the two components of the bottom bracket and the rear bracket that are rotatably connected and the axis of rotation between the rear bracket and the push rod extend along the front and rear directions of the cart respectively. , the axis of rotation between the two parts that are rotatably connected in the side bracket extends along the left-right direction of the pushcart.

Preferably, when the stroller frame is in the unfolded state, the rotational connection between the seat post and the front bracket is located in front of the rotational connection between the seat post and the bottom bracket, and the rotational connection between the seat post and the push rod is located at the lower end of the rear support Between the rotational joint of the upper end of the rear bracket and the push rod and the rotational joint of the bottom bracket and the push rod, the rotational joint of the front bracket and the push rod is above the rotational joint of the upper end of the rear support and the push rod.

Preferably, the front bracket is rotationally connected with the seat post and the push rod through the first rotating shaft and the second rotating shaft respectively, and the push rod is rotationally connected with the bottom bracket and the seat post through the third rotating shaft and the fourth rotating shaft respectively, and the lower end of the rear support The upper part and the upper end are respectively rotatably connected to the push rod through the fifth rotating shaft and the sixth rotating shaft; the bottom support is rotatably connected to the seat post through the seventh rotating shaft.

Preferably, the front bracket has a slanting rod section and a connecting rod section that is connected to the upper end of the slanting rod section and bends backwards to rotate and slidely connect with the push rod. The lower end of the slanting rod section is installed with the front wheel assembly.

Preferably, the seat post has a front bar section and a rear bar section that is connected to the rear end of the front bar section and bends backwards and downwards to be rotatably connected to the push rod, and the front bar section is rotatably connected to the front bracket.

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

Compared with the traditional stroller, the children's stroller of the utility model installs the rear wheel assembly on the lowermost end of the push rod. The function of the rear wheel bracket in the cart, the overall rods of the cart are less, which reduces the interference between the rods during the folding process of the frame, and improves the overall stability of the body. The bottom bracket and rear bracket are used to make the cart It can be easily folded from the front, rear, left, and right directions, and the volume is small after folding.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of the children's stroller in the unfolded state of the utility model;

Fig. 2 is a three-dimensional structural schematic view of the expanded state of the children's stroller of the present invention;

Fig. 3 is a schematic structural view of the front view of the children's stroller in the folded state of the utility model;

Among them: 1. side bracket; 2. front bracket; 20. front wheel assembly; 21. oblique rod section; 22. connecting rod section; 3. push rod; 30. rear wheel assembly; 32, handle; 4, seat bar; 41, front bar section; 42, rear bar section; 5, bottom support frame; 51, first bottom bar; 52, second bottom bar; 53, third bottom bar; 54. The fourth bottom bar; 6. The rear support frame; 60. The middle bar; 61. The first upper link; 62. The second upper link; 63. The first lower link; 64. The second lower link; 65. The first oblique connecting rod; 66. The second oblique connecting rod; 67. The first connecting block; 68. The second connecting block; 69. The slider; 7. The locking pin; 8. The handle; D1. The first rotating shaft ; D2, the second axis; D3, the third axis; D4, the fourth axis; D5, the fifth axis; D6, the sixth axis; D7, the seventh axis; W1, the first position; W2, the second position.

detailed description

As shown in Figure 1, Figure 2, and Figure 3, a 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 the stroller frame It includes side brackets 1 located on both sides of the stroller, and bottom brackets 5 and rear brackets 6 that are connected and supported between the side brackets 1 on both sides and can be folded and folded along the left and right directions of the stroller frame. The side brackets 1 include The lower end is equipped with the front bracket 2 of the front wheel assembly 20, and the lower end is equipped with the push rod 3 of the rear wheel assembly 30 (the push rod 3 includes a straight bar section 31 extending in the up and down direction and a supply rod located at the upper end of the straight bar section 31). The handle 32 held by the staff, the rear wheel assembly 30 is located at the lower end of the straight rod section 31), the seat rod 4, and the upper end of the front bracket 2 is connected to the straight rod section 31 by rotating and sliding. In this example, the straight rod Sliding part 31 is provided with a sliding part 310, and the front bracket 2 is connected with the sliding part 310 in rotation, that is, the front bracket 2 slides relative to the straight bar section 31 through the sliding part 310 and rotates to set the cart frame to be in the unfolded state and folded respectively. state, the upper end of the front bracket 2 is respectively connected to the first position W1 and the second position W2 of the straight rod section 31 through the slider 310, wherein the first position W1 is located in the middle of the straight rod section 31, and the second position W2 is located in the straight rod section 31. The upper part of the bar section 31, the front part and the rear part of the seat post 4 are respectively rotatably connected to the middle part of the front bracket 2 and the lower part of the straight bar section 31; part and the bottom of the straight rod section 31, the upper end and the lower end of the rear support frame 6 are all rotatably connected between the bottom of the straight rod section 31 on both sides. The locking mechanism in this example includes a locking spring pin 7 that slides radially on the push rod 3, and a lock hole that is located on the slider 310 and is arranged in cooperation with the locking spring pin 7. The locking mechanism also includes a lock hole for locking The elastic pin 7 tends to move toward the direction of the lock hole.

As shown in Figures 1 and 2, when the frame is unfolded, the front bracket 2 is rotationally connected to the seat post 4 and the straight rod section 31 through the first rotating shaft D1 and the second rotating shaft D2 respectively, and the straight rod segment 31 is respectively passed through the third rotating shaft D3, the fourth rotating shaft D4 are rotationally connected with the bottom bracket 5 and the seat post 4, and the lower end and the upper end of the rear bracket 6 are rotationally connected with the straight bar section 31 through the fifth rotating shaft D5 and the sixth rotating shaft D6 respectively; The frame 5 is rotationally connected with the seat post 4 through the seventh rotating shaft D7. The first rotation axis D1 is located in front of the seventh rotation axis D7 , the fourth rotation axis D4 is located between the fifth rotation axis D5 and the third rotation axis D3 , and the second rotation axis D2 is located above the sixth rotation axis D6 and in the middle of the straight bar section 31 . The rotation axes of the first rotation axis D1, the second rotation axis D2, the third rotation axis D3, the fourth rotation axis D4, and the seventh rotation axis D7 are arranged in parallel, and all extend horizontally along the left and right directions of the cart. The fifth rotation axis D5 and The rotation axes of the sixth rotation shaft D6 are arranged parallel to each other and extend along the front-rear direction of the cart.

As shown in Figure 2, in this example, the rear support frame 6 includes a middle rod 60 extending along the up and down direction of the cart, a first upper link 61, a second upper link 62, a first lower link 63, a second The lower link 64, the slide block 69 and the first connecting block 67 and the second connecting block 68 which are respectively fixed on the upper end of the middle rod 60 and the lower end, the cart also includes a rotation connection on the first connecting block 67 for Manually pull up and fold the handle 8 of the rear bracket 6; the middle rod 60 extends along the up and down direction of the trolley; One end is respectively rotatably connected to the push rods 3 on both sides; one end of the first lower link 63 and the second lower link 64 are respectively rotatably connected to the second connecting block 68, and the other ends are respectively rotatably connected to the push rods 3 on both sides; The slide block 69 is slidably arranged on the middle rod 60 along the extending direction of the middle rod 60; They are respectively rotatably connected with the first lower link 63 and the second lower link 64 , and the upper end is rotatably connected with the slider 69 .

In addition, the bottom bracket 5 is a double cross structure bottom bracket 5, including a first bottom bar 51 and a second bottom bar 52 that cross each other and are rotatably connected at the intersection, and a third bottom bar 51 that crosses each other and is rotatably connected at the intersection. The bottom bar 53 and the fourth bottom bar 54, the bottom of the first bottom bar 51 and the fourth bottom bar 54 are rotatably connected, and the tops of the first bottom bar 51 and the fourth bottom bar 54 are respectively rotatably connected with the seat bars 4 on both sides ; The upper part of the second bottom bar 52 and the third bottom bar 53 are rotatably connected, and the lower parts of the second bottom bar 52 and the third bottom bar 53 are respectively rotatably connected with the lower parts of the straight bar sections 31 on both sides.

Further, the front bracket 2 has a slanting bar section 21 and a connecting rod section 22 connected to the upper end of the slanting bar section 21 and bent backwards to extend and rotate and slidably connect with the straight bar section 31. The lower end of the slanting bar section 21 is installed with Front wheel assembly 2 0. The seat bar 4 has a front bar section 41 and a rear bar section 42 which is connected to the rear end of the front bar section 41 and bends downward and extends to be rotatably connected to the straight bar section 31 . The front bar section 41 is rotatably connected to the front bracket 2 .

With reference to Figures 1 to 3, when folding the cart frame, grasp the handle 8 on the rear bracket 6 and move upwards, and the middle rod 60 of the rear bracket 6 moves upwards to drive the components of the rear bracket 6 to move upward from the frame. The two sides are folded closer to the middle. At the same time, the push rod 3 will also move closer to the middle from both sides of the frame, and drive the bottom bracket 5 and the seat posts 4 and front brackets 2 on both sides to move closer to the middle. The frame 5 will drive the front bracket 2 while moving closer to the middle (the rear end of the front bracket 2 slides upwards from the middle of the push rod 3, that is, slides from the first position W1 to the second position W2, and rotates closer to the push rod 3 ), the seat post 4 (rotate backward and upward) move closer to the rear push rod 3 from the front of the vehicle frame until all parts of the vehicle frame are closed and folded; Sliding to the top of the push rod 3 , the front wheel assembly 20 is positioned above the front of the rear wheel assembly 30 .

To sum up, compared with the traditional stroller, the children's stroller of the present utility model installs the rear wheel assembly on the lower end of the push rod, and the push rod has the function of holding and pushing in the traditional children's stroller, and also With the function of the rear wheel bracket in the traditional cart, the cart has fewer rods overall, which reduces the interference between the rods during the folding process of the frame, and improves the overall stability of the car body. The bottom bracket and rear bracket are adopted. The cart can be easily folded from the front, rear, left, and right directions, and the folded volume is small.

The utility model has been described in detail above, and its purpose is to allow those familiar with the technology in this field to understand the content of the utility model and implement it, and can not limit the protection scope of the utility model, and the utility model is not limited to the above-mentioned All equivalent changes or modifications made according to the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims (10)

1. A stroller for a child, comprising a stroller frame with an unfolded state and a folded state, a locking mechanism for locking the stroller frame in the unfolded state, a bottom front and a bottom rear of the stroller frame, respectively A front wheel assembly (20) and a rear wheel assembly (30), the cart frame includes side brackets (1) located on both sides of the cart, and the side brackets (1) include lower ends where the front wheel assembly is installed (2 0) of the front bracket (2), push rod (3) and seat post (4), characterized in that: the rear wheel assembly (3 0) is installed on the lower end of the push rod (3), The upper end of the front bracket (2) is rotatably and slidably connected to the push rod (3) relative to the push rod (3), and the front and rear parts of the seat rod (4) are respectively connected to the push rod (3). The front bracket (2) is rotationally connected with the push rod (3); The stroller frame also includes a bottom bracket (5) and a rear bracket that are connected and supported between the side brackets (1) on both sides and can be folded along the left and right directions of the stroller frame (6), the upper end and the lower end of the bottom bracket (5) are rotatably connected to the front part of the seat post (4) and the lower part of the push rod (3) respectively, and the rear bracket (6 ) are rotationally connected with the push rods (3) on both sides. 2. The baby stroller according to claim 1, characterized in that: the push rod (3) includes a straight rod section (31) extending in the up and down direction, and the upper end of the straight rod section (31) is provided for holding by human hands. The handle (32) of the straight rod section (31) is formed as a single rod or is composed of multiple rods fixedly connected end to end, and the rear wheel assembly (30) is arranged on the side of the straight rod section (31) lower end. 3. The children's stroller according to claim 1, characterized in that: the stroller frame further includes a sliding piece (310) slidably arranged on the push rod (3), and the front bracket (2 ) is rotationally connected with the sliding piece (310). 4. The children's stroller according to claim 1 or 3, characterized in that: when the stroller frame is in the unfolded state and the folded state respectively, the upper ends of the front brackets (2) are respectively connected to the pushchairs. A first position (W1) and a second position (W2) of the rod (3), the second position (W2) being between the first position (W1) and the upper end of the push rod (3). 5. The stroller according to claim 3, characterized in that: the locking mechanism includes a locking spring pin (7) on the push rod (3) that slides in the radial direction, and a locking pin (7) located on the sliding member (310) is a lock hole cooperating with the lock pin (7), and the lock mechanism also includes an elastic spring for making the lock pin (7) tend to move toward the lock hole. pieces. 6. The stroller according to claim 1, characterized in that: the rear support (6) comprises: a middle rod (60), the middle rod (60) extends along the up and down direction of the cart; The first upper link (61) and the second upper link (62), one end of the first upper link (61) and the second upper link (62) are respectively connected with the upper end of the middle rod (60) The first part is rotatably connected, and the other end is rotatably connected to the push rods (3) on both sides; The first lower link (63) and the second lower link (64), one end of the first lower link (63) and the second lower link (64) are respectively connected to the lower part of the middle rod (60) Rotational connection, the other end is respectively rotationally connected with the push rods (3) on both sides; a slider (69), which is slidably arranged on the middle rod (60) along the extension direction of the middle rod (60); The first oblique connecting rod (65) and the second oblique connecting rod (66), the lower ends of the first oblique connecting rod (65) and the second oblique connecting rod (66) are respectively connected with the first lower connecting rod (63 ) is rotationally connected with the second lower link (64), and the upper end is rotationally connected with the slider (69). 7. The stroller according to claim 6, characterized in that: the rear support (6) further includes a first connecting block (67) fixed on the upper end of the middle pole (60), the The trolley also includes a handle (8) fixedly or rotatably connected to the first connection block (67). 8. The stroller according to claim 1, characterized in that: the bottom bracket (5) is a double cross structure bottom bracket (5), including first bottoms that intersect each other and are rotatably connected at the intersections The rod (51) and the second bottom rod (52) and the third bottom rod (53) and the fourth bottom rod (54) which intersect each other and are rotatably connected at the intersection, the first bottom rod (51) and the second bottom rod The lower parts of the four bottom bars (54) are rotatably connected, and the upper parts of the first bottom bar (51) and the fourth bottom bar (54) are respectively rotatably connected with the seat bars (4) on both sides; the second The upper part of the bottom bar (52) and the third bottom bar (53) are rotatably connected, and the lower parts of the second bottom bar (52) and the third bottom bar (53) are connected with the push rods (3) on both sides respectively. The lower part of the swivel connection. 9. The children's stroller according to claim 1, characterized in that: the rotation axis between the two components of the bottom bracket (5) and the rear bracket (6) that are connected in rotation and The axis of rotation between the rear bracket (6) and the push rod (3) extends along the front and rear directions of the cart respectively, and the axis of rotation between the two components in the side bracket that are rotatably connected extending along the left-right direction of the cart. 10. The children's stroller according to claim 1, characterized in that: when the stroller frame is in the unfolded state, the rotational connection between the seat post (4) and the front bracket (2) is located at the seat post (4) ) and the bottom bracket (5) in front of the rotation connection, the rotation connection between the seat rod (4) and the push rod (3) is located at the lower end of the rear bracket (6) and the push rod (3) between the rotation connection of the bottom bracket (5) and the push rod (3), the rotation connection of the front bracket (2) and the push rod (3) is located in the rear bracket ( 6) above the rotational connection between the upper end and the push rod (3).