Baby stroller

Abstract

A baby stroller, wherein a push rod, a side armrest, a push rod connecting rod and a rear bracket form a four-bar linkage mechanism, wherein the push rod position is controlled to control the deformation of the four-bar linkage mechanism, and during the deformation process, the push rod auxiliary rod drives the rear frame slide to slide along the rear bracket, thereby controlling the front bracket to be retracted or extended, thereby achieving folding or unfolding. The stroller has the beneficial effect of small size and small space occupation, and is easy to operate with one hand during folding. The structure is quick to fold and has a strong rigid structure.

Description

Technical Field

[0001] The invention relates to a baby stroller. Background Art

[0002] A child stroller in the prior art generally comprises a stroller frame having an unfolded position and a folded position, a seat mechanism disposed on the stroller frame, a vehicle locking mechanism for locking the stroller frame in the unfolded position, a front wheel assembly, a rear wheel assembly, etc. There are many types of stroller frames, and the number of rods of the stroller frames is different, and the connection relationship and connection position between the rods are different, resulting in different folding principles, folding methods, production processes, and production costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a one-way foldable baby stroller.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a baby stroller, comprising a stroller frame with an unfolded position and a folded position, a seat device, a front wheel assembly, a rear wheel assembly, and a frame locking mechanism for locking the stroller frame in the unfolded position, the stroller frame comprising side brackets located at both sides, and a plurality of cross bars fixedly connected between the side brackets at both sides, and each side bracket comprises:

[0005] A rear support, wherein the rear wheel assembly is disposed at a lower portion of the rear support;

[0006] An upper link mechanism, the upper link mechanism is formed on the upper part of the rear bracket, comprising:

[0007] Putting;

[0008] A push rod connecting rod, wherein the lower end of the push rod is pivotally connected to the rear end of the push rod connecting rod around an axis;

[0009] A side armrest is located above the push rod connecting rod, the rear end of the side armrest is connected to the push rod around a two-axis pivot, the front end of the side armrest is connected to the upper end of the rear bracket around a three-axis pivot, the push rod connecting rod is connected to the rear bracket around a four-axis pivot, and the four-axis is located below the three-axis;

[0010] Each side bracket further comprises:

[0011] A rear frame slide, wherein the rear frame slide is slidably arranged along the upper and lower length directions of the rear support;

[0012] A front frame slide, the front frame slide is connected to the push rod connecting rod around a five-axis pivot, and the five-axis is located below the four-axis;

[0013] A front bracket, wherein the front bracket slide piece is slidably matched along the front and rear directions of the front bracket, and the front wheel assembly is arranged at the front part of the front bracket;

[0014] A push rod auxiliary rod, the upper end of which is pivotally connected to the upper connecting rod mechanism, the lower part of which, the rear part of the front bracket and two of the three parts of the rear frame slide are pivotally connected, and the third part is pivotally connected to at least one of the two aforementioned parts.

[0015] The technical problem to be solved by the present invention is to provide a transversely foldable baby stroller.

[0016] In order to solve the above technical problems, the technical solution adopted by the present invention is: a baby stroller, comprising a stroller frame with an unfolded position and a folded position, a seat device, a front wheel assembly, a rear wheel assembly, and a frame locking mechanism for locking the stroller frame in the unfolded position, the stroller frame comprising side brackets located on both sides, and a cross brace connected between the side brackets on both sides and capable of being folded laterally, and each side bracket comprises:

[0017] A rear support, wherein the rear wheel assembly is disposed at a lower portion of the rear support;

[0018] An upper link mechanism, the upper link mechanism is formed on the upper part of the rear bracket, comprising:

[0019] Putting;

[0020] A push rod connecting rod, wherein the lower end of the push rod is pivotally connected to the rear end of the push rod connecting rod around an axis;

[0021] A side armrest is located above the push rod connecting rod, the rear end of the side armrest is connected to the push rod around a two-axis pivot, the front end of the side armrest is connected to the upper end of the rear bracket around a three-axis pivot, the push rod connecting rod is connected to the rear bracket around a four-axis pivot, and the four-axis is located below the three-axis;

[0022] Each side bracket further comprises:

[0023] A rear frame slide, wherein the rear frame slide is slidably arranged along the upper and lower length directions of the rear support;

[0024] A front frame slide, the front frame slide being connected to the push rod connecting rod around a five-axis pivot;

[0025] A front bracket, wherein the front bracket slide piece is slidably matched along the front and rear directions of the front bracket, and the front wheel assembly is arranged at the front part of the front bracket;

[0026] A push rod auxiliary rod, wherein the upper end of the push rod auxiliary rod is pivotally connected to the upper link mechanism, the lower portion of the push rod auxiliary rod, the rear portion of the front bracket and two of the three components of the rear bracket slide are pivotally connected, and the third component is pivotally connected to at least one of the two aforementioned components;

[0027] The cross brace comprises:

[0028] A bottom support frame is arranged between the lower end portions of the push rod connecting rods on both sides and the lower portion of the rear support.

[0029] In some embodiments, the upper connecting rod mechanism on each side also includes a seat slide connected to the side armrest around an eight-axis pivot, a seat frame slidably arranged on the seat slide along the front and rear length direction, and the rear portion of the seat frame is pivotally connected to the push rod connecting rod and / or the push rod auxiliary rod.

[0030] In some embodiments, the side armrest is connected to the front armrest via an eleven-axis pivot, the end of the front armrest is connected to one end of an armrest connecting rod via a twelve-axis pivot, and the other end of the armrest connecting rod is connected to the seat slide around a thirteen-axis.

[0031] In some embodiments, the upper end of the push rod auxiliary rod is pivotally connected to the push rod connecting rod around a six-axis, and the six-axis is located between the one axis and the four axes.

[0032] In certain embodiments, the lower portion of the push rod auxiliary rod, the rear portion of the front bracket and the rear bracket slide are connected via a seven-axis coaxial pivot.

[0033] In certain embodiments, the cross support frame further includes a front support frame pivotally connected between the front and rear portions of the front brackets on both sides, and a push rod support frame pivotally connected between the upper portions of the push rods on both sides.

[0034] In some embodiments, the bottom support frame is composed of two bottom bars that are cross-crossed and pivotally connected at the intersection, and its four ends are rotatably arranged with the lower ends of the push rod connecting rods on both sides and the lower part of the rear bracket through four universal joints.

[0035] In some embodiments, the push rod support frame is composed of at least two push rod cross support sections pivotally connected, and the two outer ends of the push rod support frame are respectively pivotally connected to the upper ends of the push rods on both sides, and the front support frame includes two front main rods that are cross-crossed and pivotally connected at the intersection, and two front auxiliary rods that are respectively pivotally connected to the front ends of the front main rods, the other ends of the two front auxiliary rods are respectively pivotally connected to the front parts of the front brackets on both sides, and the rear ends of the two front main rods are respectively pivotally connected to the rear parts of the front brackets on both sides.

[0036] In some embodiments, the frame locking mechanism is disposed at the rotational connection between the push rod and the push rod link on each side.

[0037] The scope of the present invention is not limited to the technical solutions formed by a specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in this application.

[0038] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the push rod, the side armrest, the push rod connecting rod and the rear bracket form a four-bar linkage, and the deformation of the four-bar linkage is controlled by controlling the position of the push rod. During the deformation process, the push rod auxiliary rod drives the rear frame slide to slide along the rear bracket, thereby controlling the front bracket to be retracted or extended to achieve folding or unfolding. It has the beneficial effect of small size and small space occupation, and is easy to operate with one hand during folding. The structure is quick to fold and has a strong rigid structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Attached Figure 1 It is a dotted line schematic diagram of a baby stroller (Example 2, one-way folding);

[0040] Attached Figure 2 Three-dimensional diagram of baby stroller Figure 1 (Example 1, horizontal folding);

[0041] Attached Figure 3 Three-dimensional diagram of baby stroller Figure 2 (Example 1, horizontal folding);

[0042] Attached Figure 4 A side view of the baby stroller in the unfolded position (embodiment 1, horizontally folded);

[0043] Attached Figure 5 A side view of the baby stroller in the process of half-folding (Example 1, horizontal folding);

[0044] Attached Figure 6 It is a side view of the baby stroller in the folded position (embodiment 1, horizontal folding);

[0045] Among them: 1. Push rod; 2. Push rod connecting rod; 3. Side armrest; 4. Rear bracket; 5. Front bracket; 6. Push rod auxiliary rod; 7. Front frame slide; 8. Rear frame slide; 9. Seat slide; 10. Seat frame; 11. Front armrest; 12. Armrest connecting rod; 13. Bottom support frame; 14. Bottom rod; 15. Universal joint; 16. Front support frame; 17. Push rod support frame; 18. Front wheel assembly; 19. Rear wheel assembly;

[0046] X1, one axis; X2, two axes; X3, three axes; X4, four axes; X5, five axes; X6, six axes; X7, seven axes; X8, eight axes; X11, eleven axes; X12, twelve axes; X13, thirteen axes. DETAILED DESCRIPTION

[0047] Embodiment 1, a baby stroller that can be folded horizontally, that is, folded up and down, and as shown in the attached Figure 2-6 As shown, the stroller frame has an unfolded position and a folded position, a seat device, a front wheel assembly 18, a rear wheel assembly 19, and a frame locking mechanism for locking the stroller frame in the unfolded position.

[0048] The cart frame comprises side brackets located at two side parts, a transverse support frame connected between the side brackets at the two sides and capable of being folded transversely, and a seat device is arranged between the side brackets at the two sides.

[0049] As attached Figure 2-6 As shown, each side bracket includes:

[0050] Each side bracket includes:

[0051] Rear bracket 4, the rear wheel assembly 19 is disposed at the lower portion of the rear bracket 4;

[0052] The upper link mechanism is formed on the upper part of the rear bracket 4 and includes:

[0053] Putt 1;

[0054] Push rod connecting rod 2, the lower end of push rod 1 is pivotally connected with the rear end of push rod connecting rod 2 around an axis X1;

[0055] The side armrest 3 is located above the push rod connecting rod 2, the rear end of the side armrest 3 is pivotally connected to the push rod 1 around the second axis X2, the front end of the side armrest 3 is pivotally connected to the upper end of the rear bracket 4 around the third axis X3, the push rod connecting rod 2 is pivotally connected to the rear bracket 4 around the fourth axis X4, the fourth axis X4 is located below the third axis X3, and the push rod 1, the push rod connecting rod 2, the side armrest 3 and the rear bracket 4 form a four-bar linkage;

[0056] Each side bracket also includes:

[0057] Rear frame slide 8, the rear frame slide 8 is slidably disposed along the upper and lower length directions of the rear bracket 4;

[0058] A front frame slide 7, the front frame slide 7 is pivotally connected to the push rod link 2 around the fifth axis X5;

[0059] The front frame 5 and the front frame slide 7 are slidably matched along the front and rear directions of the front frame 5, and the front wheel assembly 18 is arranged at the front part of the front frame 5;

[0060] The push rod auxiliary rod 6, the upper end of the push rod auxiliary rod 6 is pivotally connected to the upper connecting rod mechanism. In this embodiment, the upper end of the push rod auxiliary rod 6 is pivotally connected to the push rod connecting rod 2 around the sixth axis X6, and the sixth axis X6 is located between the first axis X1 and the fourth axis X4. In addition, the upper end of the push rod auxiliary rod 6 and the push rod 1, the side armrest 3, and the seat frame 10 described below are all possible. The lower part of the push rod auxiliary rod 6, the rear part of the front bracket 5 and the rear frame slide 8 are coaxially pivotally connected;

[0061] The cross brace includes:

[0062] The bottom support frame 13 is arranged between the lower end portions of the push rod connecting rods 2 on both sides and the lower portion of the rear bracket 4 .

[0063] In this embodiment, the cross support frame also includes a front support frame 16 pivotally connected between the front and rear parts of the front brackets 5 on both sides, and a push rod support frame 17 pivotally connected between the upper parts of the push rods 1 on both sides, which are used to ensure the rigidity of the front and upper parts in the unfolded position.

[0064] The bottom support frame 13 is composed of two bottom rods 14 that cross and are pivotally connected at the intersection. Its four ends are rotatably arranged with the lower ends of the push rod connecting rods 2 on both sides and the lower part of the rear bracket 4 through four universal joints 15 respectively.

[0065] The push rod support frame 17 is formed by pivoting three push rod 1 cross bracing sections, and the two outer ends of the push rod support frame 17 are respectively pivotally connected to the upper ends of the push rods 1 on both sides. For easy operation, the push rod support frame 17 is provided with an unlocking operation mechanism for controlling the unlocking of the frame locking mechanism, which is a common mechanism on the trolley and will not be described in detail.

[0066] The front support frame 16 includes two front main rods that cross and are pivotally connected at the intersection, two front auxiliary rods that are pivotally connected to the front ends of the front main rods, the other ends of the two front auxiliary rods are pivotally connected to the front parts of the front brackets 5 on both sides, and the rear ends of the two front main rods are pivotally connected to the rear parts of the front brackets 5 on both sides.

[0067] The front armrest 11 is also a common mechanism for strollers. Some are transversely foldable, while others are non-transversely foldable. In this embodiment, the front armrest 11 is transversely foldable, and the specific structure is not described in detail.

[0068] In this embodiment, the upper link mechanism on each side further includes a seat slide 9 pivotally connected to the side armrest 3 around the eight-axis X8, a seat frame 10 slidably arranged on the seat slide 9 along the front-back length direction, and the rear part of the seat frame 10 is pivotally connected to the push rod link 2 and / or the push rod auxiliary rod 6. The seat frame 10 not only meets the rigidity and comfort requirements, but also can participate in the folding of the entire vehicle frame.

[0069] The side armrest 3 is pivotally connected to a front armrest 11 via an eleventh axis X11, and the end of the front armrest 11 is pivotally connected to one end of an armrest link 12 via a twelveth axis X12, and the other end of the armrest link 12 is connected to the seat slide 9 around a thirteenth axis X13. The front armrest 11 not only meets the rigidity and comfort requirements, but also can participate in the folding of the entire vehicle frame.

[0070] The frame locking mechanism can theoretically be set at any rotation point of the aforementioned four-bar linkage, or between the rear sliding member and the rear bracket, etc., so that the linkage mechanism cannot be deformed. This embodiment is based on the convenience of operation and is set at the rotation connection between the push rod 1 and the push rod link 2 on each side. The specific structure of the frame locking mechanism is a common mechanism on each stroller and will not be repeated.

[0071] Embodiment 2, a baby stroller that cannot be folded horizontally and can only be folded in one direction, as shown in the attached Figure 1 As shown, a baby stroller includes a stroller frame with an unfolded position and a folded position, a seat device, a front wheel assembly 18, a rear wheel assembly 19, and a frame locking mechanism for locking the stroller frame in the unfolded position. The stroller frame includes side brackets located on both sides and a plurality of cross bars fixedly connected between the side brackets on both sides, and cannot be folded laterally.

[0072] As attached Figure 1 As shown, each side bracket includes:

[0073] Each side bracket includes:

[0074] Rear bracket 4, the rear wheel assembly 19 is disposed at the lower portion of the rear bracket 4;

[0075] The upper link mechanism is formed on the upper part of the rear bracket 4 and includes:

[0076] Putt 1;

[0077] Push rod connecting rod 2, the lower end of push rod 1 is pivotally connected with the rear end of push rod connecting rod 2 around an axis X1;

[0078] The side armrest 3 is located above the push rod connecting rod 2, the rear end of the side armrest 3 is pivotally connected to the push rod 1 around the second axis X2, the front end of the side armrest 3 is pivotally connected to the upper end of the rear bracket 4 around the third axis X3, the push rod connecting rod 2 is pivotally connected to the rear bracket 4 around the fourth axis X4, the fourth axis X4 is located below the third axis X3, and the push rod 1, the push rod connecting rod 2, the side armrest 3 and the rear bracket 4 form a four-bar linkage;

[0079] Each side bracket also includes:

[0080] Rear frame slide 8, the rear frame slide 8 is slidably disposed along the upper and lower length directions of the rear bracket 4;

[0081] A front frame slide 7, the front frame slide 7 is pivotally connected to the push rod link 2 around the fifth axis X5, and the fifth axis X5 is located below the fourth axis X4;

[0082] The front frame 5 and the front frame slide 7 are slidably matched along the front and rear directions of the front frame 5, and the front wheel assembly 18 is arranged at the front part of the front frame 5;

[0083] The push rod auxiliary rod 6, the upper end of the push rod auxiliary rod 6 is pivotally connected to the upper connecting rod mechanism. In this embodiment, the upper end of the push rod auxiliary rod 6 is pivotally connected to the push rod connecting rod 2 around the sixth axis X6, and the sixth axis X6 is located between the first axis X1 and the fourth axis X4. In addition, the upper end of the push rod auxiliary rod 6 and the push rod 1, the side armrest 3, and the seat frame 10 described below are all possible. The lower part of the push rod auxiliary rod 6, the rear part of the front bracket 5 and the rear frame slide 8 are coaxially pivotally connected.

[0084] The arrangement of the seat frame 10 and the front armrest 11 is the same as that of the first embodiment. The main difference between the first embodiment and the second embodiment is that the second embodiment cannot be folded horizontally, so a cross brace is not required.

[0085] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A baby stroller, comprising a stroller frame having an unfolded position and a folded position, a seat device, a front wheel assembly (18), a rear wheel assembly (19), and a frame locking mechanism for locking the stroller frame in the unfolded position, the stroller frame comprising side brackets located at two side portions, and a plurality of cross bars fixedly connected between the side brackets at the two sides, characterized in that: Each side support comprises: A rear support (4), wherein the rear wheel assembly (19) is disposed at a lower portion of the rear support (4); An upper connecting rod mechanism, the upper connecting rod mechanism being formed on the upper part of the rear bracket (4), comprising: Push rod (1); A push rod connecting rod (2), wherein the lower end of the push rod (1) is pivotally connected to the rear end of the push rod connecting rod (2) around an axis (X1); A side armrest (3) is located above the push rod connecting rod (2); the rear end of the side armrest (3) is pivotally connected to the push rod (1) around a second axis (X2); the front end of the side armrest (3) is pivotally connected to the upper end of the rear bracket (4) around a third axis (X3); the push rod connecting rod (2) is pivotally connected to the rear bracket (4) around a fourth axis (X4); the fourth axis (X4) is located below the third axis (X3); Each side bracket further comprises: A rear frame slide (8), wherein the rear frame slide (8) is slidably arranged along the upper and lower length directions of the rear bracket (4); A front frame slide (7), the front frame slide (7) being pivotally connected to the push rod connecting rod (2) around a fifth axis (X5), the fifth axis (X5) being located below the fourth axis (X4); A front bracket (5), the front bracket slide (7) slidingly cooperates along the front-rear direction of the front bracket (5), and the front wheel assembly (18) is arranged at the front part of the front bracket (5); A push rod auxiliary rod (6), the upper end of the push rod auxiliary rod (6) is pivotally connected to the upper connecting rod mechanism, the lower part of the push rod auxiliary rod (6), the rear part of the front bracket (5) and two of the three parts of the rear bracket slide (8) are pivotally connected, and the third part is pivotally connected to at least one of the two aforementioned parts.

2. A baby stroller, comprising a stroller frame having an unfolded position and a folded position, a seat device, a front wheel assembly (18), a rear wheel assembly (19), and a frame locking mechanism for locking the stroller frame in the unfolded position, the stroller frame comprising side brackets located at two side portions, and a cross brace connected between the side brackets on both sides and capable of being folded laterally, characterized in that: Each side support comprises: A rear support (4), wherein the rear wheel assembly (19) is disposed at a lower portion of the rear support (4); An upper connecting rod mechanism, the upper connecting rod mechanism being formed on the upper part of the rear bracket (4), comprising: Push rod (1); A push rod connecting rod (2), wherein the lower end of the push rod (1) is pivotally connected to the rear end of the push rod connecting rod (2) around an axis (X1); A side armrest (3) is located above the push rod connecting rod (2); the rear end of the side armrest (3) is pivotally connected to the push rod (1) around a second axis (X2); the front end of the side armrest (3) is pivotally connected to the upper end of the rear bracket (4) around a third axis (X3); the push rod connecting rod (2) is pivotally connected to the rear bracket (4) around a fourth axis (X4); the fourth axis (X4) is located below the third axis (X3); Each side bracket further comprises: A rear frame slide (8), wherein the rear frame slide (8) is slidably arranged along the upper and lower length directions of the rear bracket (4); A front frame slide (7), the front frame slide (7) being pivotally connected to the push rod connecting rod (2) around a fifth axis (X5); A front bracket (5), the front bracket slide (7) slidingly cooperates along the front-rear direction of the front bracket (5), and the front wheel assembly (18) is arranged at the front part of the front bracket (5); A push rod auxiliary rod (6), the upper end of the push rod auxiliary rod (6) is pivotally connected to the upper connecting rod mechanism, the lower part of the push rod auxiliary rod (6), the rear part of the front bracket (5) and two of the three parts of the rear bracket slide (8) are pivotally connected, and the third part is pivotally connected to at least one of the two aforementioned parts; The cross brace comprises: A bottom support frame (13), the bottom support frame (13) being arranged between the lower end portions of the push rod connecting rods (2) on both sides and the lower portion of the rear support (4).

3. The baby stroller according to claim 1 or 2, characterized in that: The upper connecting rod mechanism on each side also includes a seat slide (9) pivotally connected to the side armrest (3) around an eight-axis (X8), and a seat frame (10) slidably arranged on the seat slide (9) along the front-to-back length direction, and the rear part of the seat frame (10) is pivotally connected to the push rod connecting rod (2) and / or the push rod auxiliary rod (6).

4. The baby stroller according to claim 3, characterized in that: The side armrest (3) is pivotally connected to a front armrest (11) via an eleventh axis (X11); an end of the front armrest (11) is pivotally connected to one end of an armrest connecting rod (12) via a twelveth axis (X12); and the other end of the armrest connecting rod (12) is connected to a seat slide (9) around a thirteenth axis (X13).

5. The baby stroller according to claim 3, characterized in that: The upper end of the push rod auxiliary rod (6) is pivotally connected to the push rod connecting rod (2) around a six-axis (X6), and the six-axis (X6) is located between the one axis (X1) and the four axes (X4).

6. The baby stroller according to claim 5, characterized in that: The lower part of the push rod auxiliary rod (6), the rear part of the front bracket (5) and the rear bracket slide (8) are connected coaxially via a seven-axis (X7).

7. The baby stroller according to claim 2, characterized in that: The transverse support frame also includes a front support frame (16) pivotally connected between the front and rear parts of the front brackets (5) on both sides, and a push rod support frame (17) pivotally connected between the upper parts of the push rods (1) on both sides.

8. The baby stroller according to claim 7, characterized in that: The bottom support frame (13) is composed of two bottom rods (14) that cross and are pivotally connected at the intersection, and its four ends are rotatably arranged with the lower ends of the push rod connecting rods (2) on both sides and the lower part of the rear bracket (4) through four universal joints (15).

9. The baby stroller according to claim 8, characterized in that: The push rod support frame (17) is composed of at least two push rod (1) cross-bracing sections pivotally connected, and the two outer ends of the push rod support frame (17) are respectively pivotally connected to the upper ends of the push rods (1) on both sides, and the front support frame (16) includes two front main rods that cross and are pivotally connected at the intersection, and two front auxiliary rods that are respectively pivotally connected to the front ends of the front main rods, and the other ends of the two front auxiliary rods are respectively pivotally connected to the front parts of the front brackets (5) on both sides, and the rear ends of the two front main rods are respectively pivotally connected to the rear parts of the front brackets (5) on both sides.

10. The baby stroller according to claim 1 or 2, characterized in that: The frame locking mechanism is arranged at the rotational connection between the push rod (1) and the push rod connecting rod (2) on each side.

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