A new type of folding cart

Abstract

The present invention discloses a novel folding stroller, which is characterized in that a front foot assembly and a rear foot assembly are pivotally connected at the lower end of a push handle assembly, the front foot assembly comprises a front foot connecting member for performing the swinging, a front foot tube whose upper end is arranged on the front foot connecting member and can perform a rotating action relative to the front foot connecting member, and a front wheel arranged at the lower end of the front foot tube, and the rear foot assembly comprises a rear foot connecting member for performing the swinging, a rear foot tube whose upper end is arranged on the rear foot connecting member and can perform a rotating action relative to the rear foot connecting member, and a rear wheel arranged at the lower end of the rear foot tube, the push handle assembly drives the rear foot assembly to perform a swinging action close to the front foot assembly through a first linkage assembly, and in the process of the rear foot assembly approaching the front foot assembly, the front foot tube and the rear foot tube are driven to perform a rotating action through a second linkage assembly, so as to drive the front wheel and the rear wheel to perform a swinging action, until the wheel surfaces of the two front wheels are opposite to each other and the wheel surfaces of the two rear wheels are opposite to each other, and the frame is folded, thereby reducing the volume after folding and reducing the occupied space.

Description

Technical Field

[0001] The present invention relates to the technical field of baby strollers, in particular to a novel folding stroller. Background Art

[0002] A baby stroller is a carrying and moving tool designed for babies. It is convenient for adults to take babies out to play or go shopping, etc. It can also hold small and light items and is loved by many parents.

[0003] The structure of a traditional baby stroller is generally a foldable frame and a load-bearing seat. The frame includes a handle assembly, a front leg assembly, and a rear leg assembly. The handle assembly and the rear leg assembly can swing towards and away from the front leg assembly. During the swinging process, the frame is folded or opened as a whole through a linkage assembly. With this structure, after the entire stroller is folded, the front and rear wheels are outside the folded frame, which occupies a large space and is inconvenient to carry. Summary of the invention

[0004] The main purpose of the present invention is to provide a new type of folding cart, aiming to solve the problem that the traditional cart occupies a large space and is inconvenient to carry after being folded.

[0005] To achieve the above-mentioned objectives, the present invention proposes a new type of foldable stroller, comprising a foldable frame and a load-bearing seat, the frame comprising a U-shaped handlebar assembly, a front foot assembly, a rear foot assembly, a first linkage assembly, a second linkage assembly and a load-bearing frame for installing the load-bearing seat, the rear foot assembly comprising a rear foot connecting member pivotally mounted on the lower side of both ends of the handlebar assembly, a rear foot tube and a rear wheel mounted on the lower end of the rear foot tube, the upper end of the rear foot tube is movably inserted in the rear foot connecting member and can rotate relative to the rear foot connecting member along the axis of the rear foot tube; the front foot assembly comprises a front foot connecting member, a front foot tube and a front wheel mounted on the lower end of the front foot tube, the front foot connecting member can be pivotally mounted on the side of the rear foot connecting member away from the handlebar assembly The upper end of the front foot tube is movably inserted in the front foot connecting piece, and can rotate relative to the front foot connecting piece along the axis of the front foot tube, and the push handle assembly and the rear foot assembly can swing between positions close to the front foot assembly and away from the front foot assembly; the supporting frame can be pivotally arranged on the front foot connecting piece; the first linkage assembly is used to drive the rear foot assembly to swing close to the front foot assembly during the swing of the push handle assembly close to the front foot assembly; the second linkage assembly is used to drive the front foot tube and the rear foot tube to rotate along their respective axes during the swing of the rear foot assembly close to the front foot assembly, and when the push handle assembly and the rear foot assembly simultaneously swing close to the front foot assembly, the two front wheels and the two rear wheels swing with the rotation of the front foot tube and the rear foot tube until the two front wheels are When the wheel surfaces of the two wheels are opposite to each other and the wheel surfaces of the two rear wheels are opposite to each other, and the carrier is located between the push handle assembly and the front foot assembly, the frame is folded; the push handle assembly includes a U-shaped upper push handle and a lower push handle pivotally mounted on the lower ends of both sides of the upper push handle, the upper push handle can swing between a position close to the lower push handle and a position away from the lower push handle, and a first locking mechanism is also provided for locking the upper push handle and the lower push handle; the first linkage assembly includes a first linkage member and an L-shaped rear support member, the upper end of the rear support member is movably mounted on the lower push handle, and the lower end is pivotally connected to the first linkage member, the bent portion of the rear support member is pivotally connected to the rear foot connecting member, and the free end of the first linkage member is pivotally connected to the front foot connecting member; the lower push handle is provided with a slide groove, and the rear The upper end of the support member is pivotally provided with a moving member that can move in the slide groove, and a second locking mechanism is also provided for locking the moving member with the push handle; the second linkage assembly includes a second linkage assembly with hinged parts at both ends, and the front leg tube and the rear leg tube located on the same side are fixed with hinged parts at the positions corresponding to the second linkage assembly, and the two hinged parts are respectively hinged to the hinged parts at both ends of the second linkage assembly, and when the rear foot assembly is swung close to the front foot assembly, the front foot tube and the rear foot tube are simultaneously forced to rotate through the cooperation of the second linkage assembly and the hinged part, so that when the rear foot assembly swings to a position against the front foot assembly, the two front wheels are swung to a position where the wheel surfaces of the two front wheels are relative to each other, and the two rear wheels are swung to a position where the wheel surfaces of the two rear wheels are relative to each other.

[0006] Preferably, the carrier frame includes a front support, a U-shaped rear support and fixing members whose two ends are respectively fixed to the middle parts of the two rear support members, the two ends of the rear support are respectively pivotally provided with a third linking member, the free end of the third linking member is pivotally connected to the front foot connecting member, a fixing rod extending toward the fixing member is fixed to the bottom of the front support, one end of the fixing rod away from the front support is fixedly connected to the fixing member, and the fixing rod is located below the rear support.

[0007] Preferably, an armrest assembly is also provided, which includes an armrest connecting member, a U-shaped bent pipe and a fourth linking member, the armrest connecting member is located correspondingly at a position in the middle of the two lower push handles, the two ends of the U-shaped bent pipe are respectively detachably mounted on the upper ends of the two armrest connecting members, the lower end of the armrest connecting member is pivotally connected to one end of the fourth linking member, and the free end of the fourth linking member is pivotally connected to the rear support member.

[0008] Preferably, a brake mechanism is also provided for locking the rear wheels.

[0009] Preferably, a first reinforcement member is further provided, and two ends of the first reinforcement member are movably sleeved on the two front leg tubes respectively.

[0010] Preferably, a second reinforcement member is further provided, and two ends of the second reinforcement member are movably sleeved on the two rear leg tubes respectively.

[0011] The present invention pivotally connects the front foot assembly and the rear foot assembly at the lower end of the push handle assembly, so that the push handle assembly and the rear foot assembly can make a swinging motion close to and away from the front foot assembly, the front foot assembly includes a front foot connecting part for making the swinging motion, a front foot tube with an upper end arranged on the front foot connecting part and capable of rotating relative to the front foot connecting part, and a front wheel arranged at the lower end of the front foot tube, and the rear foot assembly includes a rear foot connecting part for making the swinging motion, a rear foot tube with an upper end arranged on the rear foot connecting part and capable of rotating relative to the rear foot connecting part, and a rear wheel arranged at the lower end of the rear foot tube, through the first linkage assembly, the push handle assembly drives the rear foot assembly to make a swinging motion close to the front foot assembly during the swinging motion close to the front foot assembly, and the rear wheel is arranged at the rear When the foot assembly approaches the front foot assembly, the front foot tube and the rear foot tube are driven to rotate through the second linkage assembly to drive the front wheel and the rear wheel to swing until the wheel surfaces of the two front wheels are opposite to each other and the wheel surfaces of the two rear wheels are opposite to each other, and the bearing frame for installing the bearing seat is located between the push handle assembly and the front foot assembly, the frame is folded. Compared with the traditional method, the present invention swings the front wheel and the rear wheel during the integrated folding of the frame, changes the positions of the two front wheels and the two rear wheels after the folding is completed, and makes the two front wheels and the two rear wheels change from being vertically opposite to the folded frame to being horizontally opposite to each other, and are incorporated into the folded frame, thereby reducing the volume after folding, reducing the occupied space, and improving the convenience of carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a three-dimensional schematic diagram of the present invention;

[0013] Figure 2 It is a side view of the present invention;

[0014] Figure 3 It is a three-dimensional schematic diagram of the folding process of the present invention;

[0015] Figure 4 It is a side view of the present invention during the folding process;

[0016] Figure 5 This is a three-dimensional schematic diagram of the present invention after folding;

[0017] Figure 6 It is a side view of the present invention after folding. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present invention, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] The invention provides a novel folding cart.

[0022] In the embodiment of the present invention, Figures 1 to 6As shown, the new folding stroller includes a foldable frame and a load-bearing seat, the frame includes a U-shaped handlebar assembly 1, a front foot assembly 2, a rear foot assembly 3, a first linkage assembly, a second linkage assembly and a load-bearing frame 6 for mounting the load-bearing seat, the rear foot assembly 3 includes a rear foot connector 31 pivotally mounted on the lower side of both ends of the handlebar assembly 1, a rear foot tube 32 and a rear wheel 33 mounted on the lower end of the rear foot tube 32, the upper end of the rear foot tube 32 is movably inserted in the rear foot connector 31, and can rotate relative to the rear foot connector 31 along the axis of the rear foot tube 32; the front foot assembly 2 includes a front foot connector 21, a front foot tube 22 and a front wheel 23 mounted on the lower end of the front foot tube 22, the front foot connector 21 is pivotally mounted on the side of the rear foot connector 31 away from the handlebar assembly 1, the upper end of the front foot tube 22 is movably inserted in the front foot connector 21, and can rotate relative to the front foot connector 31 along the axis of the rear foot tube 32 21 rotates along the axis of the front foot tube 22, and the handlebar assembly 1 and the rear foot assembly 3 can swing between a position close to the front foot assembly 2 and a position away from the front foot assembly 2; the supporting frame 6 can be pivotally arranged on the front foot connecting member 21; the first linkage assembly is used to drive the rear foot assembly 3 to swing close to the front foot assembly 1 during the swinging of the handlebar assembly 1 towards the front foot assembly 2; the second linkage assembly is used to drive the front foot tube 22 and the rear foot tube 32 to rotate along their respective axes during the swinging of the rear foot assembly 3 towards the front foot assembly 2, and when the handlebar assembly 1 and the rear foot assembly 3 swing close to the front foot assembly 2 at the same time, the two front wheels 23 and the two rear wheels 33 swing with the rotation of the front foot tube 22 and the rear foot tube 32 until the wheel surfaces of the two front wheels 23 are opposite to each other and the wheel surfaces of the two rear wheels 33 are opposite to each other, and the supporting frame 6 is located between the handlebar assembly 1 and the front foot assembly 2, and the frame is folded.

[0023] The present invention pivotally connects the front foot assembly and the rear foot assembly at the lower end of the push handle assembly, so that the push handle assembly and the rear foot assembly can make a swinging motion close to and away from the front foot assembly, the front foot assembly includes a front foot connecting part for making the swinging motion, a front foot tube with an upper end arranged on the front foot connecting part and capable of rotating relative to the front foot connecting part, and a front wheel arranged at the lower end of the front foot tube, and the rear foot assembly includes a rear foot connecting part for making the swinging motion, a rear foot tube with an upper end arranged on the rear foot connecting part and capable of rotating relative to the rear foot connecting part, and a rear wheel arranged at the lower end of the rear foot tube, through the first linkage assembly, the push handle assembly drives the rear foot assembly to make a swinging motion close to the front foot assembly during the swinging motion close to the front foot assembly, and the rear wheel is arranged at the rear When the foot assembly approaches the front foot assembly, the front foot tube and the rear foot tube are driven to rotate through the second linkage assembly to drive the front wheel and the rear wheel to swing until the wheel surfaces of the two front wheels are opposite to each other and the wheel surfaces of the two rear wheels are opposite to each other, and the bearing frame for installing the bearing seat is located between the push handle assembly and the front foot assembly, the frame is folded. Compared with the traditional method, the present invention swings the front wheel and the rear wheel during the integrated folding of the frame, changes the positions of the two front wheels and the two rear wheels after the folding is completed, and makes the two front wheels and the two rear wheels change from being vertically opposite to the folded frame to being horizontally opposite to each other, and are incorporated into the folded frame, thereby reducing the volume after folding, reducing the occupied space, and improving the convenience of carrying.

[0024] Specifically, the push handle assembly 1 includes a U-shaped upper push handle 11 and a lower push handle 12 pivotally mounted on the lower ends of both sides of the upper push handle 11. The upper push handle 11 can swing between a position close to and a position away from the lower push handle 12. A first locking mechanism (not shown) is also provided for locking the upper push handle 11 and the lower push handle 12.

[0025] It should be noted that the first locking mechanism may adopt existing technology, and its specific principle and structure will not be described in detail here.

[0026] Specifically, the first linkage assembly includes a first linkage member 41 and an L-shaped rear support member 42, the upper end of the rear support member 42 is movably mounted on the lower push handle 12, the lower end is pivotally connected to the first linkage member 41, the bent portion of the rear support member 42 is pivotally connected to the rear foot connection member 31, and the free end of the first linkage member 41 is pivotally connected to the front foot connection member 21.

[0027] Specifically, the push-down handle 12 is provided with a slide groove 121 , and the upper end of the rear support member 42 is pivotally provided with a moving member 421 that can move in the slide groove 121 , and a second locking mechanism (not shown) is further provided for locking the moving member 421 with the push-down handle 12 .

[0028] It should be noted that the second locking mechanism can adopt existing technology, and its specific principle and structure will not be described in detail here.

[0029] Specifically, the second linkage assembly includes a second linkage member 51 with hinged parts 511 at both ends. The front leg tube 22 and the rear leg tube 32 located on the same side are fixed with hinged parts 52 at positions corresponding to the second linkage member 51. The two hinged parts 52 are respectively hinged to the hinged parts 511 at both ends of the second linkage member 51. When the rear foot assembly 3 swings close to the front foot assembly 2, the front leg tube 22 and the rear leg tube 32 are simultaneously forced to rotate through the cooperation of the second linkage member 51 and the hinged part 52. Therefore, when the rear foot assembly 3 swings to a position against the front foot assembly 2, the two front wheels 23 swing to a position where the wheel surfaces of the two front wheels 23 are relative to each other, and the two rear wheels 33 swing to a position where the wheel surfaces of the two rear wheels 33 are relative to each other.

[0030] Specifically, the carrier frame 6 includes a front support 61, a U-shaped rear support 62 and a fixing member 63 whose two ends are respectively fixed to the middle parts of the two rear support members 42. The two ends of the rear support 62 are respectively pivotally provided with a third linking member 621. The free end of the third linking member 621 is pivotally connected to the front foot connecting member 21. A fixing rod 611 extending toward the fixing member 63 is fixed to the bottom of the front support 61. One end of the fixing rod 611 away from the front support 61 is fixedly connected to the fixing member 63, and the fixing rod 611 is located below the rear support 62. When the push handle assembly is swung close to the front foot assembly, the fixing member moves with the movement of the subsequent support member, and during the movement, the front support is driven to move together. When the push handle assembly swings to a position against the front foot assembly, the front support moves between the push handle assembly and the front foot assembly, during which the rear support is pressed down by the upper push handle.

[0031] Specifically, an armrest assembly 7 is also provided, which includes an armrest connector 71, a U-shaped bend pipe 72 and a fourth linking member 73. The armrest connector 71 corresponds to a position in the middle of the two lower push handles 12, and the two ends of the U-shaped bend pipe 72 are detachably mounted on the upper ends of the two armrest connectors 71 respectively. The lower end of the armrest connector 71 is pivotally connected to one end of the fourth linking member 73, and the free end of the fourth linking member 73 is pivotally connected to the rear support member 42. The U-shaped bend pipe can be swung through the cooperation of the armrest connector and the fourth linking member. After completing the folding action of the entire vehicle, the U-shaped bend pipe can be swung to an appropriate position.

[0032] Specifically, a brake mechanism (not shown) is also provided to lock the rear wheel 33 .

[0033] It should be noted that the brake mechanism can adopt existing technology, and its specific principle and structure will not be described in detail here.

[0034] Specifically, a first reinforcing member 8 is further provided, and two ends of the first reinforcing member 8 are movably mounted on the two front leg tubes 22 respectively, so as to enhance the stability of the two front leg tubes.

[0035] Specifically, a second reinforcing member 9 is further provided, and both ends of the second reinforcing member 9 are movably mounted on the two rear leg tubes 32 to enhance the stability of the two rear leg tubes.

[0036] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A novel folding cart, comprising a foldable frame and a bearing seat, characterized in that: The frame comprises a U-shaped handlebar assembly (1), a front foot assembly (2), a rear foot assembly (3), a first linkage assembly, a second linkage assembly and a support frame (6) for mounting a support seat, wherein the rear foot assembly (3) comprises a rear foot connecting member (31) pivotally mounted on the lower side of both ends of the handlebar assembly (1), a rear foot tube (32) and a rear wheel (33) mounted on the lower end of the rear foot tube (32), the upper end of the rear foot tube (32) is movably inserted in the rear foot connecting member (31) and can rotate relative to the rear foot connecting member (31) along the axis of the rear foot tube (32); the front foot assembly (2) comprises a front foot connecting member (21), a front foot tube (22) and a front wheel (23) mounted on the lower end of the front foot tube (22), the front foot connecting member ( The support frame (21) can be pivotally mounted on the side of the rear foot connecting member (31) away from the push handle assembly (1), and the upper end of the front foot tube (22) is movably inserted into the front foot connecting member (21) and can rotate relative to the front foot connecting member (21) along the axis of the front foot tube (22), so that the push handle assembly (1) and the rear foot assembly (3) can swing between positions close to the front foot assembly (2) and away from the front foot assembly (2); the support frame (6) can be pivotally mounted on the front foot connecting member (21); the first linkage assembly is used to drive the rear foot assembly (3) to swing close to the front foot assembly (1) during the swing of the push handle assembly (1) close to the front foot assembly (2); the second linkage assembly is used to drive the front foot tube (22) to swing close to the front foot assembly (2) during the swing of the rear foot assembly (3) close to the front foot assembly (2). ) and the rear foot tube (32) rotate along their respective axes. When the push handle assembly (1) and the rear foot assembly (3) simultaneously swing close to the front foot assembly (2), the two front wheels (23) and the two rear wheels (33) swing along with the rotation of the front foot tube (22) and the rear foot tube (32) until the wheel surfaces of the two front wheels (23) and the wheel surfaces of the two rear wheels (33) are opposite to each other, and the carrier frame (6) is located between the push handle assembly (1) and the front foot assembly (2), and the frame is folded. The push handle assembly (1) includes a U-shaped upper push handle (11) and a lower push handle (12) pivotally mounted on the lower ends of both sides of the upper push handle (11). The upper push handle (11) can swing between a position close to the lower push handle (12) and a position away from the lower push handle. A first locking mechanism is also provided. The structure is used to lock the upper push handle (11) and the lower push handle (12); the first linkage assembly includes a first linkage member (41) and an L-shaped rear support member (42); the upper end of the rear support member (42) is movably mounted on the lower push handle (12), and the lower end is pivotally connected to the first linkage member (41); the bent portion of the rear support member (42) is pivotally connected to the rear foot connection member (31), and the free end of the first linkage member (41) is pivotally connected to the front foot connection member (21); the lower push handle (12) is provided with a slide groove (121), the upper end of the rear support member (42) is pivotally provided with a moving member (421) that can move in the slide groove (121), and a second locking mechanism is also provided for locking the moving member (421) with the lower push handle (12);The second linkage assembly comprises a second linkage member (51) with hinged parts (511) at both ends. The front leg tube (22) and the rear leg tube (32) located on the same side are fixedly provided with hinged parts (52) at positions corresponding to the second linkage member (51). The two hinged parts (52) are respectively hinged to the hinged parts (511) at both ends of the second linkage member (51). When the rear leg assembly (3) swings close to the front leg assembly (2), the front leg tube (22) and the rear leg tube (32) are simultaneously subjected to force to rotate through the cooperation of the second linkage member (51) and the hinged part (52). Therefore, when the rear leg assembly (3) swings to a position abutting against the front leg assembly (2), the two front wheels (23) swing to a position where the wheel surfaces of the two front wheels (23) are opposite to each other, and the two rear wheels (33) swing to a position where the wheel surfaces of the two rear wheels (33) are opposite to each other.

2. A novel folding stroller as claimed in claim 1, characterized in that: The carrier frame (6) comprises a front support member (61), a U-shaped rear support member (62) and a fixing member (63) whose two ends are respectively fixed to the middle parts of the two rear support members (42); the two ends of the rear support member (62) are respectively pivotally provided with a third linking member (621); the free end of the third linking member (621) is pivotally connected to the front foot connecting member (21); a fixing rod (611) extending toward the fixing member (63) is fixed to the bottom of the front support member (61); one end of the fixing rod (611) away from the front support member (61) is fixedly connected to the fixing member (63), and the fixing rod (611) is located below the rear support member (62).

3. A novel folding stroller as claimed in claim 1, characterized in that: A handrail assembly (7) is also provided, the handrail assembly comprising a handrail connecting member (71), a U-shaped curved tube (72) and a fourth linking member (73), the handrail connecting member (71) being located at a position corresponding to the middle of the two lower push handles (12), the two ends of the U-shaped curved tube (72) being detachably mounted on the upper ends of the two handrail connecting members (71), the lower end of the handrail connecting member (71) being pivotally connected to one end of the fourth linking member (73), and the free end of the fourth linking member (73) being pivotally connected to the rear support member (42).

4. A novel folding stroller as claimed in claim 1, characterized in that: A brake mechanism is also provided for locking the rear wheel (33).

5. A novel folding cart as claimed in claim 1, characterized in that: A first reinforcing member (8) is also provided, and two ends of the first reinforcing member (8) are movably sleeved on the two front leg tubes (22) respectively.

6. A novel folding stroller as claimed in claim 1, characterized in that: A second reinforcing member (9) is also provided, and the two ends of the second reinforcing member (9) are respectively movably sleeved on the two rear leg tubes (32).

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