CN101767599A - stroller - Google Patents

Abstract

A kind of stroller, its trolley frame comprises a first front frame, a second front frame, a front end portion and a first bottom front frame which are rotatably arranged with the lower end portion of the first front frame, a front end portion and a lower end portion of the second front frame The second bottom front frame that is rotatably arranged, the first bottom rear frame that is rotatably connected with the first bottom front frame through the third rotating shaft, and the second bottom rear frame that is rotatably connected with the second bottom front frame through the fourth rotating shaft, The first push rod, the second push rod, and the rear bracket that can be folded horizontally, the rear end of the first bottom front frame and the rear end of the second bottom front frame are rotatably connected through the first rotating shaft. The front end of the frame is rotatably connected to the front end of the second bottom rear frame through a second rotating shaft. When the stroller frame is in the folded position, the third rotating shaft and the fourth rotating shaft are close together, and the distance between the first rotating shaft and the second rotating shaft is lengthened, so that the front end of the first bottom front frame reaches the first bottom rear frame The range of length increase between the rear ends of the pushcart is small, so that the volume of the stroller frame is small after being folded.

Description

stroller

technical field

The present invention relates to a baby carriage.

Background technique

The 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 rear wheel assembly arranged at the bottom rear of the stroller frame rear wheel assembly, a locking device for locking the cart frame in the unfolded position, and the cart frame includes

first front bracket;

second front bracket;

The first underframe, the front end of the first underframe and the lower end of the first front bracket can be rotatably arranged in at least two intersecting plane directions;

The second underframe, the front end of the second underframe and the lower end of the second front bracket can be rotatably arranged in at least two intersecting plane directions, the first underframe and the lower end of the second front support The second underframe intersects and is rotatably connected at the intersection, and a bottom cross brace is formed between the first underframe and the second underframe;

a first push rod, the lower part of the first push rod is rotatably connected to the upper end of the first front bracket;

a second push rod, the lower part of the second push rod is rotatably connected to the upper end of the second front bracket;

A rear support that can be folded horizontally, the rear support is arranged between the first push rod, the second push rod, the first bottom rear frame, and the second bottom rear frame. When the cart frame is converted from the expanded position to the folded position, the bottom cross brace is converted from the expanded state to the folded state, the width of which is reduced but the length is greatly increased.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stroller.

To solve the above-mentioned technical problems, a technical solution adopted by the present invention is: a stroller, including a stroller frame with an unfolded position and a folded position, and a front wheel assembly arranged at the bottom front of the stroller frame , a rear wheel assembly arranged at the bottom rear of the cart frame, a locking device for locking the cart frame in the unfolded position, and the cart frame includes

first front bracket;

second front bracket;

The first bottom front frame, the front end of the first bottom front frame and the lower end of the first front bracket can be rotatably arranged at least in two intersecting plane directions;

The second bottom front frame, the front end of the second bottom front frame and the lower end of the second front frame can be rotatably arranged at least in two intersecting plane directions, and the first bottom The rear end of the front frame is rotationally connected to the rear end of the second bottom front frame through a first rotating shaft;

a first bottom rear frame, the first bottom rear frame is rotatably connected to the first bottom front frame through a third rotating shaft;

The second bottom rear frame, the second bottom rear frame is rotatably connected with the second bottom front frame through the fourth rotating shaft, the front end of the first bottom rear frame is connected to the second bottom The front end of the rear frame is rotatably connected by the second rotating shaft, and the axis lines of the first rotating shaft, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are all along the vertical direction extended and parallel to each other;

a first push rod, the lower part of the first push rod is rotatably connected to the upper end of the first front bracket;

a second push rod, the lower part of the second push rod is rotatably connected to the upper end of the second front bracket;

A rear support that can be folded horizontally, the rear support is arranged between the first push rod, the second push rod, the first bottom rear frame, and the second bottom rear frame, or It is arranged between the first front bracket, the second front bracket, the first bottom rear frame, and the second bottom rear frame.

In some embodiments, the cart frame may further include:

The first front connecting piece, the lower end of the first front bracket is rotatably connected with the first front connecting piece through the fifth rotating shaft, the front end of the first bottom front frame is connected with the first front connecting piece a front connecting member is rotatably connected through the seventh rotating shaft;

The second front connecting piece, the lower end of the second front bracket is rotatably connected with the second front connecting piece through the sixth rotating shaft, the front end of the second bottom front frame is connected with the first The two front connecting parts are rotatably connected through the eighth rotating shaft. It may also be that the first front frame is connected to the first bottom front frame through a spherical surface, and the second front frame is connected to the second bottom front frame through a spherical surface.

In some further embodiments, the axis of the fifth axis of rotation is parallel to the horizontal plane, and the fifth axis of rotation is perpendicular to the space of the seventh axis of rotation; the axis of the sixth axis of rotation The line is parallel to the horizontal plane, and the sixth rotation axis is spatially perpendicular to the eighth rotation axis.

In some further embodiments, the axis of the fifth rotating shaft coincides with the axis of the sixth rotating shaft.

In some embodiments, the rear brace may be formed by intersecting the first rod and the second rod and connecting them in rotation at the intersection, and one end of the first rod passes through The first rotating joint and the lower end of the first push rod can be rotated in two intersecting plane directions, and the other end of the first rod is connected to the second through the fourth rotating joint. The bottom rear frame can be rotatably arranged in two intersecting plane directions, and one end of the second rod can be rotated in two intersecting plane directions with the lower end of the second push rod through the second rotating joint. The other end of the second rod is arranged to be rotatable in two intersecting plane directions with the first bottom frame through the third rotating joint.

In some embodiments, the locking mechanism may include a first side locking mechanism arranged between the lower part of the first push rod and the upper part of the first front bracket, arranged on the A second side locking mechanism between the lower part of the second push rod and the upper part of the second front bracket.

In some embodiments, the locking mechanism may include a lateral locking mechanism disposed on the rear frame to prevent the lateral folding of the rear frame.

In some embodiments, a foldable cross brace may be provided between the upper end of the first push rod and the upper end of the second push rod. Therefore, the rigidity between the first push rod and the second push rod is stronger.

In some further embodiments, the cross brace is composed of a third rod and a fourth rod whose inner end is rotatably connected to the inner end of the third rod, and the The outer end of the third rod is rotatably connected to the upper end of the first push rod, and the outer end of the fourth rod is rotatably connected to the upper end of the second push rod .

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, technical solutions formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: the first bottom front frame, the second bottom front frame, the first bottom rear frame and the second bottom frame A four-bar linkage mechanism is formed between the bottom and rear frames. When the cart frame is in the folded position, the third rotating shaft and the fourth rotating shaft are close together, and the first rotating shaft is connected to the fourth rotating shaft. The distance between the second rotating shafts is elongated, so that the length increase between the front end of the first bottom front frame and the rear end of the first bottom rear frame is relatively small, so that the After the stroller frame is folded, the volume is small.

Description of drawings

Accompanying drawing 1 is perspective view of the present invention (cart frame is in unfolded position);

Accompanying drawing 2 is a perspective view of the present invention (the cart frame is between the unfolded position and the folded position);

Accompanying drawing 3 is perspective view of the present invention (cart frame is in folded position);

Accompanying drawing 4 is the right side view of the present invention (cart frame is in unfolded position);

Accompanying drawing 5 is the right side view of the present invention (the cart frame is between the unfolded position and the folded position);

Accompanying drawing 6 is the right side view of the present invention (cart frame is in folded position);

Accompanying drawing 7 is the exploded view of the present invention.

Among them: 7. The first bottom front frame; 8. The second bottom front frame; 9. The first front connector; 10. The second front connector; 11. The first front bracket; 12. The second front bracket; 13. 14, the second bottom rear frame; 15, the first push rod; 16, the second push rod; 17, the rear support frame; 18, the cross brace; 21, the first rod; 22, the second Rod; 23, the first rotating joint; 24, the second rotating joint; 25, the third rotating joint; 26, the fourth rotating joint; 31, the first rotating shaft; 32, the second rotating shaft; 33, the third rotating shaft; 34 , the fourth shaft; 35, the fifth shaft; 36, the sixth shaft; 41, the third rod; 42, the fourth rod.

Detailed ways

As shown in the accompanying drawings, a stroller includes a stroller frame with an unfolded position and a folded position, a front wheel assembly arranged at the bottom front of the stroller frame, and a front wheel assembly arranged at the bottom front of the stroller The rear wheel assembly at the rear of the frame bottom is a locking device for locking the cart frame in the unfolded position, the front wheel assembly includes a first front wheel assembly and a second front wheel assembly, and the rear The wheel assembly includes a first rear wheel assembly and a second rear wheel assembly.

As shown in the accompanying drawings, the cart frame includes

the first front bracket 11;

the second front bracket 12;

The first front connecting piece 9, the lower end of the first front bracket 11 is rotatably connected with the first front connecting piece 9 through the fifth rotating shaft 35, and the first front wheel assembly is arranged on the on the first front connector 9;

The second front connector 10, the lower end of the second front bracket 12 is rotationally connected with the second front connector 10 through the sixth rotating shaft 36, and the second front wheel assembly is arranged on the on the second front connector 10;

The first bottom front frame 7, the front end of the first bottom front frame 7 is rotatably connected to the first front connecting member 9 through the seventh rotating shaft, and the axis line of the fifth rotating shaft 35 is connected to the first bottom front frame 7. The horizontal planes are parallel, and the fifth rotation axis 35 is vertical to the seventh rotation axis;

The second bottom front frame 8, the front end of the second bottom front frame 8 is rotatably connected with the second front connecting member 10 through the eighth rotating shaft, and the axis line of the sixth rotating shaft 36 is connected with the second bottom front frame 8. The horizontal planes are parallel, and the sixth axis of rotation 36 is perpendicular to the eighth axis of rotation, the rear end of the first bottom front frame 7 is connected to the rear end of the second bottom front frame 8 Rotately connected by the first rotating shaft 31, the axis line of the fifth rotating shaft 35 coincides with the axis line of the sixth rotating shaft 36;

The first bottom rear frame 13, the first bottom rear frame 13 is rotatably connected with the first bottom front frame 7 through the third rotating shaft 33;

The second bottom rear frame 14, the second bottom rear frame 14 is rotatably connected with the second bottom front frame 8 through the fourth rotating shaft 34, and the front end of the first bottom rear frame 13 is connected to the second bottom rear frame 8. The front end of the second bottom rear frame 14 is rotatably connected through the second shaft 32, the first shaft 31, the second shaft 32, the third shaft 33 and the fourth shaft. The axis lines of the rotating shaft 34 all extend along the up and down direction and are parallel to each other;

The first push rod 15, the lower part of the first push rod 15 is rotationally connected with the upper end of the first front bracket 11;

The second push rod 16, the lower part of the second push rod 16 is rotationally connected with the upper end of the second front bracket 12;

The rear bracket 17 that can be folded horizontally, the rear bracket 17 is arranged on the first push rod 15, the second push rod 16, the first bottom rear frame 13, the second bottom rear The rear bracket 17 between the frames 14 is formed by intersecting the first rod 21 and the second rod 22 and connecting them in rotation at the intersection. One end of the first rod 21 passes through The first rotating joint 23 and the lower end of the first push rod 15 can be arranged to rotate in two intersecting plane directions, and the other end of the first rod 21 is connected to the first rotating joint 26 through the fourth rotating joint 26. The said second bottom rear frame 14 can be rotatably arranged in two intersecting plane directions, and one end of said second rod 22 connects with the lower end of said second push rod 16 through a second rotating joint 24 It can be set to rotate in two intersecting plane directions, and the other end of the second rod 22 can be rotated in two intersecting plane directions with the first bottom frame 13 through the third rotating joint 25 Rotate to set.

The locking mechanism includes a first side locking mechanism arranged between the lower part of the first push rod 15 and the upper part of the first front bracket 11, and a lower part of the second push rod 16. and the second side locking mechanism between the upper part of the second front bracket 12 . The locking mechanism includes a lateral locking mechanism arranged on the rear support frame 17 to prevent the rear support frame 17 from being folded laterally. The first side locking mechanism, the second side locking mechanism and the lateral locking mechanism can all adopt locking mechanisms commonly used in the prior art, such as: the first side locking mechanism can be on the second side The lower end of a push rod 15 is provided with a first elastic lock tongue, and a first lock hole is opened on the upper part of the first front bracket 11. When the first side locking mechanism is in the locked position, the first elastic lock tongue The deadbolt is inserted into the first lock hole; the second side locking mechanism can use the same structure as the first side locking mechanism; the lateral locking mechanism is used to lock the first side A rod 21 and the second rod 22 are locked, and the relative rotation of the first rod 21 and the second rod 22 is prohibited after being locked. A disc seat is fixed on the top, and the first rod 21 is rotatably connected with the disc seat. There is a lock on the disc seat, and the first rod 21 is slidably A lock is provided, and when the lateral locking mechanism is in the locking position, the lock is inserted into the lock opening, thereby prohibiting the first rod 21 from interacting with the second rod 22 turn.

As shown in accompanying drawings 1-3, a foldable cross brace 18 is arranged between the upper end of the first push rod 15 and the upper end of the second push rod 16, and the cross brace 18 is 18 is composed of a third rod 41, a fourth rod 42 whose inner end is rotationally connected with the inner end of the third rod 41, and the outer end of the third rod 41 It is rotatably connected with the upper end of the first push rod 15 , and the outer end of the fourth rod 42 is rotatably connected with the upper end of the second push rod 16 . A locking mechanism may be provided between the inner end of the third rod 41 and the inner end of the fourth rod 42, so that the third rod 41 when the cart frame is in the unfolded position The expansion between the inner end of the inner end of the fourth rod 42 and the inner end of the fourth rod 42 is relatively stable; it can also be set so that the inner end of the third rod 41 and the inner end of the third rod 41 when the cart frame is in the expanded position The inner ends of the fourth rod 42 are at an over-dead point during deployment, so that the deployment between the two is stable.

The described trolley frame is provided with a seat mechanism, and the seat mechanism includes a first seat frame and a first pedal frame which are respectively rotatably arranged on the first front bracket 11; The second seat frame on the front bracket 12, the second foot frame; The seat that can be folded horizontally between the first seat frame and the second seat frame; A foot that can be folded horizontally between the foot frame and the second foot frame.

Suppose that the rear support frame 17 is arranged between the first front frame 11 , the second front frame 12 , the first bottom rear frame 13 , and the second bottom rear frame 14 . The rear brace 17 can adopt the following structure: the rear brace includes a first rear brace, a second rear brace, a third rear brace, a fourth rear brace, and inner braces of the aforementioned four rear braces respectively. The ends of the rear support are rotatably connected, and the locking mechanism between the four rear support rods and the rear support is provided, and the outer end of the first rear support rod is connected to the first front support. The upper part is set to rotate in two plane directions, the outer end of the second rear strut and the upper part of the second front bracket are set to rotate in two plane directions, and the third The outer end of the rear strut and the first bottom rear frame 13 are arranged to rotate in two plane directions, and the outer end of the fourth rear strut is connected to the second rear bottom rear frame. 14 is arranged rotatably in two planar directions.

The orientation words such as upper, lower, front, and rear involved above are defined when the cart frame is in the expanded position, and the positions of the first front connecting piece 9 and the second front connecting piece 10 are front and bottom.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (9)

1. A stroller, comprising a stroller frame with an unfolded position and a folded position, a front wheel assembly arranged at the bottom front portion of the stroller frame, a rear wheel assembly arranged at the bottom rear portion of the stroller frame The rear wheel assembly and the locking device for locking the cart frame in the unfolded position are characterized in that: the cart frame includes The first front bracket (11); The second front bracket (12); The first bottom front frame (7), the front end of the first bottom front frame (7) and the lower end of the first front frame (11) can rotate at least in two intersecting plane directions setting; The second bottom front frame (8), the front end of the second bottom front frame (8) and the lower end of the second front frame (12) can at least rotate in two intersecting plane directions The rear end of the first bottom front frame (7) is rotatably connected to the rear end of the second bottom front frame (8) through the first rotating shaft (31); The first bottom rear frame (13), the first bottom rear frame (13) is rotationally connected with the first bottom front frame (7) through a third rotating shaft (33); The second bottom rear frame (14), the second bottom rear frame (14) is rotatably connected with the second bottom front frame (8) through the fourth rotating shaft (34), and the first bottom The front end of the rear frame (13) is rotatably connected with the front end of the second bottom rear frame (14) through the second rotating shaft (32), the first rotating shaft (31), the second The axes of the rotating shaft (32), the third rotating shaft (33) and the fourth rotating shaft (34) all extend along the vertical direction and are parallel to each other; A first push rod (15), the lower part of the first push rod (15) is rotationally connected with the upper end of the first front bracket (11); A second push rod (16), the lower part of the second push rod (16) is rotationally connected with the upper end of the second front bracket (12); The rear bracket (17) that can be folded horizontally, the rear bracket (17) is arranged on the first push rod (15), the second push rod (16), the first bottom rear frame ( 13), between the second bottom rear frame (14), or be arranged on the first front frame (11), the second front frame (12), the first bottom frame (13), between the second bottom rear frame (14). 2. The stroller according to claim 1, wherein the stroller frame further comprises The first front connecting piece (9), the lower end of the first front bracket (11) is rotationally connected with the first front connecting piece (9) through the fifth rotating shaft (35), the first The front end portion of a bottom front frame (7) is rotatably connected with the first front connecting piece (9) through the seventh rotating shaft, The second front connecting piece (10), the lower end of the second front bracket (12) is rotationally connected with the second front connecting piece (10) through the sixth rotating shaft (36), the first The front ends of the two bottom front frames (8) are rotatably connected to the second front connecting piece (10) through the eighth rotating shaft. 3. The stroller according to claim 2, characterized in that: the axis line of the fifth rotating shaft (35) is parallel to the horizontal plane, and the fifth rotating shaft (35) is parallel to the seventh rotating shaft. The rotating shaft is perpendicular to the space; the axis line of the sixth rotating shaft (36) is parallel to the horizontal plane, and the sixth rotating shaft (36) is vertical to the eighth rotating shaft in space. 4. The stroller according to claim 2, characterized in that: the axis line of the fifth rotating shaft (35) coincides with the axis line of the sixth rotating shaft (36). 5. The stroller according to claim 1, characterized in that: said rear support frame (17) is formed by intersecting the first bar (21) and the second bar (22) and rotating at the intersection One end of the first rod (21) can be connected with the lower end of the first push rod (15) through the first rotating joint (23) in two intersecting plane directions Rotately arranged, the other end of the first rod (21) can be rotated in two intersecting plane directions with the second bottom rear frame (14) through the fourth rotating joint (26) , one end of the second rod (22) can be rotated in two intersecting plane directions through the second rotating joint (24) and the lower end of the second push rod (16), so The other end of the second rod (22) is arranged to be rotatable in two intersecting plane directions with the first bottom rear frame (13) through a third rotating joint (25). 6. The stroller according to any one of claims 1-5, characterized in that: said locking mechanism includes a push rod (15) arranged on the lower part of said first push rod (15) and said first front The first side locking mechanism between the upper part of the bracket (11), the second side locking mechanism arranged between the lower part of the second push rod (16) and the upper part of the second front bracket (12) . 7. The stroller according to any one of claims 1-5, characterized in that: the locking mechanism is arranged on the rear bracket (17) and makes the rear bracket (17) 17) A lateral locking mechanism that cannot be folded laterally. 8. The stroller according to any one of claims 1-5, characterized in that: the upper end of the first push rod (15) and the upper end of the second push rod (16) A foldable horizontal brace (18) is arranged between them. 9. The stroller according to claim 8, characterized in that: said cross brace (18) is formed by the third rod (41), the inner end and the inner part of said third rod (41). The fourth rod (42) whose ends are rotatably connected, the outer end of the third rod (41) is rotatably connected with the upper end of the first push rod (15), The outer end of the fourth rod (42) is rotationally connected with the upper end of the second push rod (16).

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