CN116902049A - Child cart - Google Patents

Abstract

The invention relates to a child stroller, wherein a frame only comprises a front wheel bracket, a rear wheel bracket, a side rod bracket, a push rod bracket, a stay rod bracket and a connecting bracket, wherein a first sliding piece is arranged at the front part of the connecting bracket and can slide up and down along the front wheel bracket, and a second sliding piece is arranged at the lower part of the stay rod bracket and can slide back and forth along the connecting bracket. The frame has the advantages that the number of the whole rods is small, the structure is simple, and when the frame is folded, the push rod frame is only required to be driven to move backwards and downwards, so that the rods in the frame can be linked to rotate mutually to be gradually folded, the whole size of the folded frame is reduced, and convenience is brought to daily carrying and use of users.

Description

stroller

Technical field

The present invention relates to the field of children's products, and in particular to a children's stroller.

Background technique

Existing children's strollers have various structures, and the number of rods and connection relationships are also different. Correspondingly, the folding principles, folded shapes and folded sizes are also different. How to ensure that the stroller is in good condition? Under the premise of stability and normal performance, making the structure of the frame as simple as possible, making the folding operation more convenient, and making the folded volume as small as possible have always been the goals that technicians in the field continue to pursue.

Contents of the invention

The object of the present invention is to provide a new children's stroller.

In order to achieve the above object, the technical solution adopted by the present invention is: a children's stroller, which includes a frame with an unfolded state and a folded state, and a front wheel assembly and a rear wheel assembly located at the bottom of the frame. In the unfolded state, The frame includes:

A front wheel bracket, the front wheel bracket extends backward and tilted from bottom to top, and the front wheel assembly is located at the bottom of the front wheel bracket;

Rear wheel bracket, the rear wheel bracket tilts forward and extends from bottom to top, and the rear wheel assembly is located at the bottom of the rear wheel bracket;

Side rod frame, the side rod frame extends in the up and down direction, the lower part of the side rod frame is rotatably connected to the upper part of the front wheel bracket, and the upper part of the rear wheel bracket is rotatably connected to the side rod frame ;

The connecting frame extends in the front and rear direction, the rear part of the connecting frame is rotatably connected to the rear wheel bracket, the front part of the connecting frame is rotatably connected to a first sliding member, and the first sliding member is rotatably connected to the rear wheel bracket. The sliding member is slidably disposed on the front wheel bracket along the length extension direction of the front wheel bracket;

Push rod frame, the push rod frame extends in the up and down direction, and the upper part of the side rod frame is rotatably connected to the push rod frame;

A pole frame, the pole frame extends in the up and down direction, the pole frame and the rear wheel bracket cross each other and are rotationally connected at the intersection, the upper part of the pole frame and the lower part of the push rod frame Rotally connected, the lower part of the pole frame is rotatably connected to a second sliding member, and the second sliding member is slidably provided on the connecting frame along the length extension direction of the connecting frame.

Preferably, during the transition of the vehicle frame from the unfolded state to the folded state, the first sliding member slides upward along the front wheel bracket, and the second sliding member slides forward along the connecting frame, so that the The front wheel bracket, the connecting bracket, the rear wheel bracket, the pole bracket, the side rod bracket and the push rod bracket are gathered together in the front and rear direction.

Preferably, when the vehicle frame is in a folded state, the side rod frame and the push rod frame are folded behind the rear wheel bracket, and the front wheel bracket, the connecting frame and the rear wheel bracket are arranged along the The front and rear directions are sequentially folded, and the pole frame is folded between the connecting frame, the rear wheel bracket and the side rod frame.

In some embodiments, when the vehicle frame is in a folded state, the front wheel assembly and/or the rear wheel assembly and the lower part of the push rod frame are jointly supported on the ground so that the vehicle frame is self-standing on the ground.

In some embodiments, the upper part of the front wheel bracket is rotatably connected to the lower part of the side rod bracket around a first rotation center line, and the upper part of the rear wheel bracket is rotatably connected to the side rod bracket around a second rotation center line. On the side rod frame, when the vehicle frame is in an unfolded state, the first rotation center line and the second rotation center line are parallel to each other, and along the length extension direction of the side rod frame, the second rotation center line The center line is located above the first rotation center line.

In some embodiments, the strut frame is rotationally connected to the rear wheel bracket around a third rotation center line, and the rear portion of the connecting frame is rotationally connected to the rear wheel bracket around a fourth rotation center line, When the vehicle frame is in an unfolded state, the connecting frame extends gradually and obliquely downward from front to back, and along the length extension direction of the rear wheel bracket, the third rotation center line is located at the fourth rotation center above the line.

In some embodiments, the vehicle frame further includes a seat frame extending in the front-to-back direction in the unfolded state, the rear portion of the seat frame is rotatably connected to the strut frame, and the side frame is rotatably connected to the strut frame. A third sliding member is provided, and the third sliding member is slidably disposed on the seat frame along the length extension direction of the seat frame.

In some embodiments, when the vehicle frame is in an unfolded state, the side rod frame and the push rod frame extend in the same length direction, and the length extension direction of the front wheel bracket extends with the length of the side rod frame. The angle between directions is an obtuse angle.

In some embodiments, the front wheel support includes two sets of front struts located on the left and right sides and extending in the up and down direction. The rear wheel support includes two sets of front struts located on the left and right sides and extending in the up and down direction. The rear support rod, the side rod frame includes two sets of side rods that are located on the left and right sides and both extend in the up and down direction, and the push rod frame includes two sets of push rods that are located on the left and right sides and both extend in the up and down direction, The support rod frame includes two sets of support rods located on the left and right sides and extending in the up and down direction. The connecting frame includes two sets of connecting rods located on the left and right sides and extending in the front and rear direction.

On the left and right sides of the frame, the upper part of the front support rod is rotationally connected to the lower part of the side rod, the upper part of the side rod is rotationally connected to the push rod, and the upper part of the rear support rod is rotationally connected. Rotationally connected to the side rod, the support rod and the rear support rod cross each other and are rotationally connected, the upper part of the support rod is rotationally connected to the lower part of the push rod, the lower part of the support rod A set of the second sliding parts is rotatably connected, the rear part of the connecting rod is rotatably connected to the rear support rod, and the front part of the connecting rod is rotatably connected with a set of the first sliding parts. , the first sliding member is slidably provided on the front support rod, and the second sliding member is slidably provided on the connecting rod.

In some embodiments, the first sliding member is a sliding sleeve slidably sleeved on the front support rod; and/or the second sliding member is a sliding sleeve slidably sleeved on the connecting rod. slide on.

In some embodiments, the front wheel bracket, the rear wheel bracket and the push rod bracket are each fixed in width along the left and right directions. In other embodiments, the front wheel bracket, the rear wheel bracket and the push rod bracket are fixed in width along the left and right directions. Each of the push rod frames is configured to be foldable in the left and right directions.

Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In the children's stroller of the present invention, the frame only includes a front wheel bracket, a rear wheel bracket, a side rod bracket, a push rod bracket, and a pole bracket. And the connecting frame has a small number of rods and a simple structure. When folding, you only need to drive the push rod frame to move backward and downward, and it can link the rods in the frame to rotate and close each other, so that the size of the folded frame The size is reduced, which brings convenience to users’ daily carrying and use.

Description of the drawings

1 is a schematic three-dimensional structural diagram of a children's stroller in an unfolded state according to a specific embodiment of the present invention;

Figure 2 is a schematic side structural view of the stroller of Figure 1;

Figure 3 is a schematic three-dimensional structural diagram of the stroller of Figure 1 in a semi-folded state;

Figure 4 is a schematic side structural view of the stroller of Figure 3;

Figure 5 is a schematic three-dimensional structural diagram of the stroller of Figure 1 in a folded state;

Figure 6 is a schematic side structural view of the stroller of Figure 5;

Among them: 1. Front wheel bracket; 11. Front strut; 11a, upper joint; 12. Front cross bar; 2. Rear wheel bracket; 21. Rear strut; 22. Rear cross bar; 3. Side rod bracket; 31 , side rod; 31a, lower joint; 4, push rod frame; 41, push rod; 42, upper cross rod; 5, connecting frame; 51, connecting rod; 6, strut frame; 61, strut; 7, No. 1. sliding member; 8. second sliding member; 9. seat post; 10. third sliding member; 20. front wheel assembly; 30. rear wheel assembly.

Detailed ways

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The following descriptions of the directions such as front, rear, left, right, up and down are defined based on the directions observed by the user when pushing the stroller when the frame of the stroller is in the unfolded state. The purpose is only to clearly explain the stroller. The relative position of the various rods/components in the stroller.

Referring to Figures 1 to 6, a children's stroller is shown, which includes a frame with an unfolded state and a folded state, a front wheel assembly 20 and a rear wheel assembly 30 located at the bottom of the frame, and is used to lock the frame in Locking mechanism in unfolded state.

The vehicle frame includes a front wheel bracket 1, a rear wheel bracket 2, a side rod bracket 3, a connecting bracket 5, a push rod bracket 4 and a strut bracket 6. The frame is in an unfolded state, as shown in Figures 1 to 3 , the front wheel bracket 11 tilts and extends backward from bottom to top, and the front wheel assembly 20 is located at the bottom of the front wheel bracket 1; the rear wheel bracket 2 tilts and extends forward from bottom to top, and the rear wheel assembly 30 is located on the rear wheel The bottom of the bracket 2; the side rod frame 3 extends in the up and down direction, the lower part of the side rod bracket 3 is rotationally connected to the upper part of the front wheel bracket 1, and the upper part of the rear wheel bracket 2 is rotationally connected to the side rod bracket 3; the connecting frame 5 extends along the front and rear direction, the rear part of the connecting frame 5 is rotatably connected to the rear wheel bracket 2, the front part of the connecting frame 5 is rotatably connected to a first sliding member 7, the first sliding member 7 can move along the front wheel bracket 1 The length extension direction is slidably provided on the front wheel bracket 1; the push rod frame 4 extends in the up and down direction, and the upper part of the side rod frame 3 is rotatably connected to the push rod frame 4; the strut frame 6 extends in the up and down direction, and the strut frame 6 extends in the up and down direction. The rod frame 6 and the rear wheel bracket 2 intersect with each other and are rotatably connected at the intersection. The upper part of the strut frame 6 is rotatably connected to the lower part of the push rod frame 4. The lower part of the strut frame 6 is rotatably connected with the second sliding member 8 , the second sliding member 8 is disposed on the connecting frame 5 so as to be slidable along the length extension direction of the connecting frame 5 .

When the frame is folded, the push rod frame 4 is driven to move downward and backward, and the side rod frame 3 is driven to flip backward relative to the front wheel bracket 1, and the strut frame 6 is flipped backward relative to the rear wheel bracket 2, which can be linked to make the third The two sliding parts 8 slide forward along the connecting frame 5, and the first sliding part 7 slides upward along the front wheel bracket 1, so that the front wheel bracket 1 and the rear wheel bracket 2 gradually close together in the front and rear direction, and finally the front wheel bracket 1 and the rear wheel bracket 2 are connected. The frame 5, the rear wheel bracket 2, the strut frame 6, the side rod frame 3 and the push rod frame 4 are gathered together in the front and rear direction.

The vehicle frame also includes a seat frame extending in the front-to-back direction in the unfolded state. The rear portion of the seat frame is rotatably connected to the strut frame 6. A third slider 10 is rotatably provided on the side frame 3. The three sliding members 10 are slidably disposed on the seat frame along the length extension direction of the seat frame. During the folding process of the vehicle frame, the seat frame rotates relative to the pole frame 6, and the third sliding member 10 slides relative to the seat frame and rotates relative to the side pole frame 3, so that the seat frame, the side pole frame 3 and the pole frame 6 converge with each other.

Referring to the accompanying drawings, in this embodiment, each rod in the frame is specifically configured as follows:

The front wheel support 1 includes two sets of front struts 11 that are arranged on the left and right sides and extend in the up and down direction, and a front crossbar 12 fixed between the lower parts of the two groups of front struts 11. The bottom of each group of front struts 11 Each is provided with a set of front wheel assemblies 20, and the two sets of front struts 11 respectively extend obliquely outward in the left and right directions from bottom to top, so that the distance between the lower parts of the two sets of front struts 11 in the left and right direction is smaller than that of the two sets of front struts. The distance between the upper parts of rod 11.

The side rod frame 3 includes two sets of side rods 31 located on the left and right sides and extending in the up and down direction. The lower part of each set of side rods 31 is rotationally connected to the upper part of the front support rod 11 on the same side around the first rotation center line X1. The first rotation center line X1 extends horizontally in the left-right direction. Here, the upper part of the front support rod 11 has an upper joint 11a extending backward, and the lower part of the side rod 31 has a lower joint 31a extending backward. The upper joint 11a and the lower joint 31a are connected to rotate around the first rotation center line X1. , so that the front support rod 11 and the side rod 31 are rotationally connected. When the frame is in the unfolded state, the upper part of the front support rod 11 and the lower part of the side rod 31 offset in the up and down direction, and the first rotation center line X1 is located at the front support Behind the rod 11 and the side rod 31.

The rear wheel bracket 2 includes two sets of rear struts 21 that are arranged on the left and right sides and extend in the up and down direction, and a rear cross bar 22 fixed between the lower parts of the two sets of rear struts 21. The rear struts 21 of each group A set of rear wheel assemblies 30 are provided at the bottom. The upper part of the rear support rod 21 on each side is rotatably connected to the side rod 31 on the same side around the second rotation center line X2. The second rotation center line X2 and the first rotation center line X1 are parallel to each other, and along the side rod 31 In the length extension direction, the second rotation center line X2 is located above the first rotation center line X1.

The push rod frame 4 includes two sets of push rods 41 that are arranged on the left and right sides and extend in the up and down direction, and an upper cross bar 42 fixed between the upper parts of the two sets of push rods. Here, the upper cross bar 42 and the two sets of push rods are The rod 41 is integrally provided as a U-shaped rod with the opening facing downward. The support rod frame 6 includes two sets of support rods 61 located on the left and right sides and extending in the up and down direction. The connecting frame 5 includes two sets of connecting rods 51 located on the left and right sides and extending in the front and rear direction. The first sliding member 7 Both the sliding member 8 and the second sliding member 8 have two groups arranged on the left and right sides.

Among them, on the left and right sides of the frame, the support rod 61 and the rear support rod 21 intersect with each other and are rotationally connected around the third rotation center line X3 at the intersection, and the rear part of the connecting rod 51 is rotationally connected around the fourth rotation center line X4 Connected to the rear support rod 21, the front part of the connecting rod 51 is rotatably connected to a first sliding member 7. The first sliding member 7 is here a first sliding sleeve. The first sliding sleeve is sleeved on the front support in a sliding fit. on pole 11;

The upper part of the support rod 61 is rotationally connected to the lower part of the push rod 41 around the fifth rotation center line X5, the upper part of the side rod 31 is rotationally connected to the push rod 41 around the sixth rotation center line X6, and the lower part of the support rod 61 is rotationally connected. The second sliding member 8 is here a second sliding sleeve, and the second sliding sleeve is sleeved on the connecting rod in a sliding fit.

The above-mentioned third rotation center line X3, fourth rotation center line X4, fifth rotation center line X5, and sixth rotation center line X6 are all parallel to the first rotation center line X1 and the second rotation center line X2, and along the rear support rod Along the length extension direction of the push rod 41, the fourth rotation center line X4 is located below the third rotation center line X3; along the length extension direction of the push rod 41, the fifth rotation center line X5 is located below the sixth rotation center line X6.

The seat frame includes two seat posts 9 located on the left and right sides and extending in the front-to-back direction. On the left and right sides of the frame, the rear portion of the seat post 9 is rotatably connected to the support rod 61 around the seventh rotation center line X7. , a third sliding member 10 is rotatably connected to the side rod 31 , and the third sliding member 10 is here specifically a third sliding sleeve, which is sleeved on the seat post 9 in a sliding fit. Along the length extension direction of the stay rod 61, the seventh rotation center line X7 is located above the third rotation center line X3 and below the fifth rotation center line X5; the third slider 10 is provided on the side rod 31 and located above the second rotation center line X2.

Referring to Figures 1 to 3, when the frame is in an unfolded state, on the left and right sides of the frame, the angle between the length extension direction of the front support rod 11 and the length extension direction of the side rod 31 is an obtuse angle. The rod 31 and the push rod 41 extend in the same length direction, the connecting rod 51 extends gradually and obliquely downward from front to back, and the support rod 61 is supported in the up and down direction between the push rod 41, the rear support rod 21 and the connecting rod 51 in the unfolded state The lower frame structure is simple.

When the frame needs to be folded, as shown in Figures 3 and 4, after unlocking the locking mechanism on the frame, apply downward force on the push rod frame 4 so that the push rod frame 4 faces the rear wheel bracket 2 This linkage causes the side rod frame 3 and the strut frame 6 to flip backward, thereby causing the second sliding member 8 to slide forward along the connecting frame 5, and the first sliding member 7 to slide upward along the front wheel bracket 1. , thereby causing the front wheel bracket 1, the connecting bracket 5 and the rear wheel bracket 2 to rotate and converge with each other in the front and rear direction.

After the folding is completed, the vehicle frame is as shown in Figure 5, in which the side rod frame 3 and the push rod frame 4 are folded behind the rear wheel bracket 2, and the front wheel bracket 1, the connecting frame 5 and the rear wheel bracket 2 are in sequence along the front and rear direction. When folded, the strut frame 6 is folded between the connecting frame 5, the rear wheel bracket 2 and the side rod frame 3. Among them, the first sliding member 7 slides to the upper position of the front support rod 11 so that the connecting frame 5 and the front wheel bracket 1 overlap as much as possible in the height direction; the second sliding member 8 slides to the front position of the connecting rod 51 is also close to the upper position of the front wheel bracket 1, so that the pole frame 6 overlaps the front wheel bracket 1 as much as possible in the height direction, which is beneficial to reducing the overall height of the folded vehicle frame. The two sets of front wheel assemblies 20 are located between the two sets of rear wheel assemblies 30 in the left and right direction. The front wheel assemblies 20 and the rear wheel assemblies 30 and the lower part of the push rod frame 4 are jointly supported on the ground so that the folded vehicle frame can stand on the ground. . In the folded stroller, all the rods are tightly gathered together, taking up less space, and the structure is relatively flat and compact, which brings convenience to the user's daily storage and carrying.

In other embodiments, the front wheel bracket 1, the rear wheel bracket 2 and the push rod bracket 4 can also be configured to be foldable in the left and right directions, so that when the frame is folded, it can be further folded in the left and right directions. Further reduce the folded volume of the frame.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Substantial equivalent changes or modifications shall be included in the protection scope of the present invention.

Claims (10)

1. A children's stroller, including a frame with an unfolded state and a folded state, and a front wheel assembly and a rear wheel assembly located at the bottom of the frame, characterized in that: in the unfolded state, the frame includes: A front wheel bracket, the front wheel bracket extends backward and tilted from bottom to top, and the front wheel assembly is located at the bottom of the front wheel bracket; Rear wheel bracket, the rear wheel bracket tilts forward and extends from bottom to top, and the rear wheel assembly is located at the bottom of the rear wheel bracket; Side rod frame, the side rod frame extends in the up and down direction, the lower part of the side rod frame is rotatably connected to the upper part of the front wheel bracket, and the upper part of the rear wheel bracket is rotatably connected to the side rod frame ; The connecting frame extends in the front and rear direction, the rear part of the connecting frame is rotatably connected to the rear wheel bracket, the front part of the connecting frame is rotatably connected to a first sliding member, and the first sliding member is rotatably connected to the rear wheel bracket. The sliding member is slidably disposed on the front wheel bracket along the length extension direction of the front wheel bracket; Push rod frame, the push rod frame extends in the up and down direction, and the upper part of the side rod frame is rotatably connected to the push rod frame; A pole frame, the pole frame extends in the up and down direction, the pole frame and the rear wheel bracket cross each other and are rotationally connected at the intersection, the upper part of the pole frame and the lower part of the push rod frame Rotally connected, the lower part of the pole frame is rotatably connected to a second sliding member, and the second sliding member is slidably provided on the connecting frame along the length extension direction of the connecting frame. 2. The children's stroller according to claim 1, wherein during the transition of the frame from the unfolded state to the folded state, the first sliding member slides upward along the front wheel bracket, and the third slider slides upward along the front wheel bracket. The two sliding members slide forward along the connecting frame so that the front wheel bracket, the connecting frame, the rear wheel bracket, the strut frame, the side rod frame and the push rod frame move along the front and rear directions. Huddle together. 3. The children's stroller according to claim 1, characterized in that: when the frame is in a folded state, the side rod frame and the push rod frame are folded behind the rear wheel bracket, and the front wheel bracket is folded. The wheel bracket, the connecting frame and the rear wheel bracket are gathered in sequence along the front and rear direction, and the pole frame is folded between the connecting frame, the rear wheel bracket and the side rod frame. 4. The children's stroller according to claim 3, characterized in that: when the frame is in a folded state, the front wheel assembly and/or the rear wheel assembly and the lower part of the push rod frame are jointly supported on The ground makes the vehicle frame stand on the ground. 5. The children's stroller according to claim 1, characterized in that: the upper part of the front wheel bracket and the lower part of the side rod bracket are rotationally connected around the first rotation center line, and the upper part of the rear wheel bracket is connected around the first rotation center line. The second rotation center line is rotationally connected to the side rod frame. When the vehicle frame is in an unfolded state, the first rotation center line and the second rotation center line are parallel to each other and extend along the side rod frame. In the length extension direction, the second rotation center line is located above the first rotation center line. 6. The children's stroller according to claim 1, characterized in that: the pole frame is rotatably connected to the rear wheel bracket around a third rotation center line, and the rear part of the connecting frame is around a fourth rotation center line. The line is rotatably connected to the rear wheel bracket. When the vehicle frame is in an unfolded state, the connecting frame extends gradually and obliquely downward from front to back, and along the length extension direction of the rear wheel bracket, the third The third rotation center line is located above the fourth rotation center line. 7. The stroller according to claim 1, wherein the frame further includes a seat frame extending in the front-to-back direction in the unfolded state, and the rear portion of the seat frame is rotatably connected to the support rod. On the frame, a third sliding member is rotatably provided on the side rod frame, and the third sliding member is slidably provided on the seat frame along the length extension direction of the seat frame. 8. The children's stroller according to claim 1, characterized in that: when the frame is in an unfolded state, the side rod frame and the push rod frame extend in the same length direction, and the length of the front wheel bracket The angle between the extension direction and the length extension direction of the side rod frame is an obtuse angle. 9. The children's stroller according to any one of claims 1 to 8, characterized in that: the front wheel bracket includes two sets of front struts located on the left and right sides and extending in the up and down direction, and the rear wheel bracket The bracket includes two sets of rear support rods located on the left and right sides and extending in the up and down direction. The side rod frame includes two sets of side rods located on the left and right sides and extending in the up and down direction. The push rod frame includes two sets of side rods located on the left and right sides and extending in the up and down direction. Two sets of push rods on the left and right sides and extending in the up and down direction. The support rod frame includes two sets of support rods on the left and right sides and extending in the up and down direction. The connecting frame includes two sets of push rods on the left and right sides and extending in the up and down direction. Two sets of connecting rods extending in the front-to-back direction, On the left and right sides of the frame, the upper part of the front support rod is rotationally connected to the lower part of the side rod, the upper part of the side rod is rotationally connected to the push rod, and the upper part of the rear support rod is rotationally connected. Rotationally connected to the side rod, the support rod and the rear support rod cross each other and are rotationally connected, the upper part of the support rod is rotationally connected to the lower part of the push rod, the lower part of the support rod A set of the second sliding parts is rotatably connected, the rear part of the connecting rod is rotatably connected to the rear support rod, and the front part of the connecting rod is rotatably connected with a set of the first sliding parts. , the first sliding member is slidably provided on the front support rod, and the second sliding member is slidably provided on the connecting rod. 10. The children's stroller according to claim 9, characterized in that: the first sliding member is a sliding sleeve slidably sleeved on the front support rod; and/or the second sliding member It is a sliding sleeve that can be slidably placed on the connecting rod; and/or, the front wheel bracket, the rear wheel bracket and the push rod bracket are each fixed in width along the left and right directions or each can be retracted in the left and right directions. Folding setting.