Folding cart

Abstract

The utility model discloses a folding cart which comprises a handle set, a front foot set and a rear foot set, the folding cart has a folding state and an unfolding state, the folding cart further comprises a first connecting rod and a second connecting rod, the handle set comprises a handle rod, and the first connecting rod, the second connecting rod, the handle rod and the rear foot set are connected to form a first four-bar mechanism; the folding cart further comprises a third connecting rod, the third connecting rod comprises a fifth hinge point hinged to the first connecting rod and a sixth hinge point hinged to the front foot set, the first connecting rod, the third connecting rod, the front foot set and the rear foot set are connected to form a second four-bar mechanism, and the fifth hinge point is located between the first hinge point and the second hinge point. The folding cart is simple in overall structure, simple in folding operation, small in occupied space after being folded, convenient to carry and capable of improving use experience of a user.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of baby carriage, especially to a folding stroller. BACKGROUND

[0002] The child stroller is a tool car designed for the convenience of children's outdoor activities, and ensures the safety of children during the journey. In the related art, the child stroller usually adopts a foldable structure, which can reduce the occupied space when not in use. The existing folding stroller has a complex whole vehicle structure, and the folding operation is relatively cumbersome. After folding, it still occupies a large space, which is not convenient for carrying out. SUMMARY

[0003] The utility model aims at at least in a certain extent solves one of the technical problems in the related art. For this purpose, one purpose of the utility model is to propose a folding stroller, which has a simple whole vehicle structure, simple folding operation, small space occupation after folding, convenient carrying and improved user experience.

[0004] According to the folding stroller of the utility model embodiment, it includes: handle group, front foot group and rear foot group, the folding stroller has folding state and unfolding state, the folding stroller further includes first connecting rod and second connecting rod, the handle group includes handle bar, the first connecting rod includes first hinged point hinged with the handle bar and second hinged point hinged with the rear foot group, the second connecting rod includes third hinged point hinged with the handle bar and fourth hinged point hinged with the rear foot group, the first connecting rod, the second connecting rod, the handle bar and the rear foot group are connected into first four connecting rod mechanism;

[0005] The folding stroller further includes third connecting rod, the third connecting rod includes fifth hinged point hinged with the first connecting rod and sixth hinged point hinged with the front foot group, the first connecting rod, the third connecting rod, the front foot group and the rear foot group are connected into second four connecting rod mechanism, and the fifth hinged point is located between the first hinged point and the second hinged point.

[0006] According to the folding stroller of the utility model embodiment, the whole vehicle structure is simple, the folding operation is simple, the space occupation is small after folding, the carrying is convenient, and the use experience of user is improved.

[0007] In addition, the folding stroller of the above embodiment of the utility model can also have the following additional technical features:

[0008] In some embodiments, the folding stroller further includes a first cross bar and a first connecting piece, the first cross bar is connected with the first connecting rod and extends in the left-right direction, the first connecting piece is fixedly connected with the first cross bar, and the fifth hinged point of the third connecting rod is hinged with the first connecting piece.

[0009] In some embodiments, the third connecting rod comprises a second cross rod and a side rod, the second cross rod extends in the left-right direction, the side rod extends in the front-back direction and is hinged to the first connecting piece, the second cross rod is connected to the side rod at both ends, and the side rod is hinged to the front leg group to facilitate folding of the front leg group.

[0010] In some embodiments, the folding stroller further comprises a second connecting piece, the second connecting piece has a middle part, a first end part and a second end part, the first end part and the second end part are arranged on opposite sides of the middle part, the upper end of the rear leg group is connected to the middle part, the lower end of the second connecting rod is rotatably connected to the first end part, and the upper end of the front leg group is rotatably connected to the second end part.

[0011] In some embodiments, the folding stroller further comprises a handle part, the handle part is connected to the second connecting piece for lifting the folding stroller.

[0012] In some embodiments, in the unfolded state, the front leg group and the second connecting rod extend backward and downward.

[0013] In some embodiments, in the unfolded state, the front leg group and the second connecting rod extend in the same direction.

[0014] In some embodiments, in the unfolded state, the handle rod and the first connecting rod extend backward and downward.

[0015] In some embodiments, in the unfolded state, the handle rod and the first connecting rod extend in the same direction.

[0016] In some embodiments, the rear leg group comprises a rear leg tube, the first connecting rod, the second connecting rod, the handle rod and the rear leg tube are connected to form the first four-bar linkage mechanism.

[0017] In some embodiments, the front leg group comprises a front leg tube, the first connecting rod, the third connecting rod, the front leg tube and the rear leg tube are connected to form the second four-bar linkage mechanism.

[0018] In some embodiments, the first connecting rod comprises a first rod part, a second rod part and a connecting part, the first rod part is connected to the inner side of the handle rod in the left-right direction, the second rod part is connected to the inner side of the rear leg tube in the left-right direction, the first rod part and the second rod part have a difference in the left-right direction, and the connecting part is connected to the first rod part and the second rod part.

[0019] In some embodiments, the handle rod comprises two rods spaced apart in the left-right direction, and the handle group further comprises a handle tube, the handle tube is arranged in the left-right direction and connected to the two handle rods respectively. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a perspective view of a folding stroller in some embodiments of the present application, and the folding stroller is in an unfolded state.

[0021] Figure 2 is Figure 1 is a partial enlarged view of the A area of the middle ring.

[0022] Figure 3 is a side view of a folding stroller in some embodiments of the present application, and the folding stroller is in an unfolded state.

[0023] Figure 4 is a perspective view of a folding stroller in some embodiments of the present application, and the folding stroller is in a folded state.

[0024] Figure 5 is a perspective view of a folding stroller in some embodiments of the present application, and the folding stroller is in a folded state.

[0025] The drawings show: folding stroller 100, handle group 10, front leg group 20, rear leg group 30, first connecting rod 40, second connecting rod 50, third connecting rod 60, second connecting piece 70, handle part 80, handle bar 11, push handle tube 12, front leg tube 21, rear leg tube 31, first hinge point 41, second hinge point 42, first horizontal rod 43, first connecting piece 44, first rod part 45, connecting part 46, second rod part 47, third hinge point 51, fourth hinge point 52, fifth hinge point 61, sixth hinge point 62, second horizontal rod 63, side rod 64. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] The folding stroller 100 according to the embodiments of the present application comprises: a handle group 10, a front leg group 20, and a rear leg group 30.

[0028] In combination with Figures 1 to 5In particular, the folding stroller 100 has a folded state and an unfolded state, the folding stroller 100 further comprises a first connecting rod 40 and a second connecting rod 50, the handlebar group 10 comprises a handlebar rod 11, the first connecting rod 40 comprises a first hinge point 41 hinged with the handlebar rod 11 and a second hinge point 42 hinged with the rear leg group 30, the second connecting rod 50 comprises a third hinge point 51 hinged with the handlebar rod 11 and a fourth hinge point 52 hinged with the rear leg group 30, and the first connecting rod 40, the second connecting rod 50, the handlebar rod 11 and the rear leg group 30 are connected into a first four-connecting-rod mechanism.

[0029] When the folding stroller 100 is converted from the unfolded state to the folded state, the first connecting rod 40 is hinged with the handlebar rod 11 at the first hinge point 41, the second connecting rod 50 is hinged with the handlebar rod 11 at the third hinge point 51, the handlebar rod 11 rotates forward around the first hinge point 41 and presses down the first connecting rod 40, the first connecting rod 40 rotates backward around the second hinge point 42, the handlebar rod 11 drives the second connecting rod 50 to rotate backward around the fourth hinge point 52, and the handlebar rod 11 is folded by being folded along the front-rear direction relative to the rear leg group 30 under the traction of the first connecting rod 40 and the second connecting rod 50.

[0030] In addition, the folding stroller 100 further comprises a third connecting rod 60, the third connecting rod 60 comprises a fifth hinge point 61 hinged with the first connecting rod 40 and a sixth hinge point 62 hinged with the front leg group 20, the first connecting rod 40, the third connecting rod 60, the front leg group 20 and the rear leg group 30 are connected into a second four-connecting-rod mechanism, the fifth hinge point 61 is located between the first hinge point 41 and the second hinge point 42, and when the folding stroller 100 is converted from the unfolded state to the folded state, the first connecting rod 40 rotates backward around the second hinge point 42, drives the third connecting rod 60 to rotate backward around the fifth hinge point 61, and the third connecting rod 60 drives the front leg group 20 to be folded along the front-rear direction relative to the rear leg group 30, so that the front leg group 20 is folded.

[0031] The folding stroller 100 has the advantages that the whole vehicle structure is simple, the folding operation is simple, the folding stroller 100 occupies a small space after being folded, the folding stroller 100 is convenient to carry, and the use experience of a user is improved.

[0032] Optionally, when the folding stroller 100 is in the unfolded state, the first hinge point 41 is located above the second hinge point 42, the third hinge point 51 is located above the fourth hinge point 52, and the fifth hinge point 61 is located behind the sixth hinge point 62; and when the folding stroller 100 is in the folded state, the first hinge point 41 is located below the second hinge point 42, the third hinge point 51 is located below the fourth hinge point 52, and the fifth hinge point 61 is located below the sixth hinge point 62.

[0033] In combination with Figure 2In some embodiments, the folding stroller 100 further comprises a first crossbar 43 and a first connecting piece 44, the first crossbar 43 is connected with the first connecting rod 40 and extends in the left-right direction, the first connecting piece 44 is fixedly connected with the first crossbar 43, and the fifth hinge joint of the third connecting rod 60 is hingedly connected with the first connecting piece 44, so as to realize the hinging connection between the third connecting rod 60 and the first connecting piece 44. The first crossbar 43 is arranged at the middle lower portion of the first connecting rod 40, and when the first crossbar 43 rotates, the third connecting rod 60 is driven to rotate through the first connecting piece 44, so as to realize the folding of the front leg group 20 relative to the rear leg group 30.

[0034] Specifically, when the folding stroller 100 is converted from the unfolded state to the folded state, the first connecting rod 40 is subjected to a downward pressure, the first connecting rod 40 rotates rearward around the second hinge joint 42, the first crossbar 43 is driven to rotate rearward around the second hinge joint 42 together with the first connecting rod 40, the first connecting piece 44 is fixed relative to the first crossbar 43 and also rotates rearward around the second hinge joint 42, the force of the rearward rotation of the first connecting piece 44 is converted into the force of the rearward rotation of the third connecting rod 60 at the fifth hinge joint 61, the first connecting piece 44 drives the third connecting rod 60 to rotate rearward around the fifth hinge joint 61, the front end of the third connecting rod 60 is hingedly connected with the front leg group 20, the force of the rearward rotation of the third connecting rod 60 around the fifth hinge joint 61 is converted into the force of the rearward rotation of the front leg group 20, and the front leg group 20 is drawn to the rear leg group 30 under the traction of the third connecting rod 60, so as to realize the folding of the front leg group 20.

[0035] Optionally, the folding stroller 100 can comprise two first connecting rods 40 distributed in the left-right direction, the left end of the first crossbar 43 is connected with the first connecting rod 40 located on the left side, and the right end is connected with the first connecting rod 40 located on the right side. A plurality of first connecting pieces 44 can be arranged on the first crossbar 43 in the left-right direction, so as to enhance the connection strength between the first crossbar 43 and the third connecting rod 60; the first connecting piece 44 can be a plastic piece, which has a relatively light weight, a relatively long service life and a relatively low production cost, and is conducive to reducing the weight of the folding stroller 100 and reducing the manufacturing cost of the folding stroller 100.

[0036] In combination with Figure 2 and Figure 3In some embodiments, the third link 60 comprises a second crossbar 63 and a side bar 64, the second crossbar 63 extends in the left-right direction and is hinged to the first connecting piece 44, and the side bar 64 is hinged to the front leg group 20. Alternatively, the fifth hinge point 61 of the third link 60 is arranged on the second crossbar 63, and the sixth hinge point 62 is arranged on the side bar 64. Optionally, the second crossbar 63 is connected with the side bar 64 at both ends thereof. In addition, the side bar 64 extends in the front-rear direction in the unfolded state, and extends in the up-down direction in the folded state. When the folding stroller 100 is folded, the first connecting piece 44 is rotated rearward by the first link 40, the second crossbar 63 is rotated rearward by the first connecting piece 44, the force of the rearward rotation of the first connecting piece 44 is converted into the force of the rearward rotation of the second crossbar 63 about its own axis at the fifth hinge point 61, the side bar 64 is rotated forward about the sixth hinge point 62 by the second crossbar 63, and the force of the forward rotation of the side bar 64 is converted into the force of the rearward rotation of the front leg group 20 at the sixth hinge point 62. The front leg group 20 is folded relative to the rear leg group 30 under the traction of the side bar 64, thereby achieving the effect of folding the front leg group 20.

[0037] Specifically, when the folding stroller 100 is converted from the unfolded state to the folded state, the first link 40 is subjected to a downward force, the first link 40 is rotated rearward about the second hinge point 42, the first crossbar 43 is rotated rearward about the second hinge point 42 under the traction of the first link 40, the first connecting piece 44 is fixed relative to the first crossbar 43 and is rotated rearward about the second hinge point 42, the second crossbar 63 is rotated rearward under the traction of the first connecting piece 44, the force of the rearward rotation of the second crossbar 63 is converted into the force of the forward rotation of the side bar 64 about the sixth hinge point 62, the front end of the side bar 64 is hinged to the front leg group 20, the force of the forward rotation of the side bar 64 is converted into the force of the rearward rotation of the front leg group 20 at the sixth hinge point 62, and the front leg group 20 is rotated rearward to the front of the rear leg group 30 under the traction of the side bar 64, thereby achieving the effect of folding the front leg group 20 relative to the rear leg group 30.

[0038] In some embodiments, the folding stroller 100 further comprises a second connecting piece 70, the second connecting piece 70 has a middle part, a first end part and a second end part, the first end part and the second end part are arranged on opposite sides of the middle part, the middle part is connected to the upper end of the rear leg group 30, the lower end of the second link 50 is rotatably connected to the first end part, the fourth hinge point 52 at which the second link 50 is hinged to the rear leg group 30 is located at the first end part, and the second link 50 is rotated about the first end part between the unfolded state and the folded state. The upper end of the front leg group 20 is rotatably connected to the second end part, the front leg group 20 is rotated about the second end part between the unfolded state and the folded state, thereby achieving the unfolding and folding of the folding stroller 100. The arrangement of the second connecting piece 70 makes the front leg group 20 closer to the rear leg group 30, and makes the second link 50 more easily close to the rear leg group 30, thereby reducing the occupied space of the folding stroller 100 after folding.

[0039] Specifically, the upper end of the rear leg group 30 is connected to the middle part of the second connecting member 70, the bottom part of the second connecting member 70 forms a space for the front leg group 20 to rotate to the front part of the rear leg group 30 when the front leg group 20 rotates to the rear leg group 30, and the space for the second connecting member 50 to rotate to the rear part of the rear leg group 30 when the second connecting member 50 rotates to the rear leg group 30, the space for the front leg group 20 to rotate to the front part of the rear leg group 30 makes the front leg group 20 easier to rotate to the rear leg group 30, and the space for the second connecting member 50 to rotate to the rear part of the rear leg group 30 makes the second connecting member 50 closer to the rear leg group 30, which reduces the size of the folding stroller 100 when it is folded.

[0040] When the folding stroller 100 is converted from the unfolded state to the folded state, the second connecting member 50 rotates forward around the first end to the rear part of the rear leg group 30, the handlebar 11 rotates around the second connecting member 50 to the rear leg group 30, and the front leg group 20 rotates backward around the second end to the front part of the rear leg group 30, the inner sides of the first end and the second end are provided with a cross section to limit the front leg group 20 and the second connecting member 50 from rotating further to the rear leg group 30, which realizes the folding of the folding stroller 100; when the folding stroller 100 is converted from the folded state to the unfolded state, the front leg group 20 rotates forward around the second end to the unfolded position, the second connecting member 50 rotates backward and drives the handlebar 11 to rotate to the unfolded position, the top part of the second connecting member 70 limits the front leg group 20 and the second connecting member 50 to be in the unfolded state and not to rotate further forward, which realizes the unfolding of the folding stroller 100.

[0041] In addition, the lower end of the second connecting member 70 is provided with a mounting part, the mounting part is arranged in the upper end of the rear leg group 30, and is used to fix the position of the second connecting member 70; the second connecting member 70 is provided with a first mounting hole, the handle part 80 is arranged in the first mounting hole, and is used to fix the position of the handle part 80, and the mounting part and the first mounting hole are opposite along the central axis direction of the mounting part.

[0042] Optionally, the front leg group 20 and the second connecting member 70 can be rivet connected, and the second connecting member 50 and the second connecting member 70 can be rivet connected, the rivet connection is convenient to install, has strong bearing capacity, good shock resistance, and is convenient to reduce the folding difficulty of the folding stroller 100 and improve the stability of the folding stroller 100 when it is unfolded.

[0043] In some embodiments, the folding stroller 100 further comprises a handle part 80, and the handle part 80 is connected to the second connecting member 70. The handle part 80 can extend along the left-right direction, and the two ends are respectively connected to the two second connecting members 70. The handle part 80 is used to fix the rear leg group 30 when the folding stroller 100 is folded, and is used to lift the folding stroller 100 when the folding stroller 100 is in the folded state, which is convenient to carry.

[0044] Specifically, the rear leg group 30 comprises rear leg tubes 31 arranged symmetrically along the left-right direction, the second connecting members 70 are arranged at the upper portions of the left and right rear leg tubes 31 respectively, and the two ends of the handle part 80 are connected to the upper portions of the left and right second connecting members 70 respectively. When the folding stroller 100 is converted from the unfolded state to the folded state, the handle part 80 is forced to fix the rear leg group 30, and the second connecting rod 50 rotates forward around the first end portion to the rear portion of the rear leg group 30, and the handlebar 11 is folded relative to the rear leg group 30 along the front-rear direction under the driving of the second connecting rod 50, and the front leg group 20 rotates backward around the second end portion to the front portion of the rear leg group 30, so that the folding stroller 100 is folded, and the handle part 80 can be used to lift the folding stroller 100 after the folding stroller 100 is folded, facilitating the taking and carrying of the folding stroller 100.

[0045] Optionally, the handle part 80 can be a U-shaped rod with the opening downward, and the two ends of the U-shaped rod are connected to the corresponding second connecting members 70 respectively, so that the handle part 80 can be used to lift the folding stroller 100 when the folding stroller 100 is in the folded state, facilitating the carrying.

[0046] Optionally, the upper end of the rear leg group 30, the upper end of the front leg group 20 and the fourth hinge point 52 can be rotationally connected around the same rotation center line, and the second connecting member 70 can be removed, reducing the number of components of the folding stroller 100 and lowering the production cost of the folding stroller 100.

[0047] Specifically, when the folding stroller 100 is folded, the front leg group 20 rotates backward around the rotation center line to be folded relative to the rear leg group 30, and the second connecting rod 50 rotates forward around the same rotation center line to be folded relative to the rear leg group 30, and the handlebar 11 is folded along the front-rear direction relative to the rear leg group 30 under the driving of the second connecting rod 50, so that the folding of the folding stroller 100 can also be realized, and the removal of the second connecting member 70 can simplify the structure of the folding stroller 100, reduce the production of components, and thus lower the production cost of the folding stroller 100.

[0048] In combination Figure 3 In some embodiments, in the unfolded state, the front leg group 20 and the second connecting rod 50 extend backward from bottom to top and form a local space inside the second connecting rod 50, the front leg group 20 and the rear leg group 30, and a seat can be arranged in the local space, facilitating the children to ride.

[0049] Optionally, in the unfolded state, the front leg group 20 and the second connecting rod 50 extend along the same direction, avoiding the second connecting rod 50 from being flipped relative to the front leg group 20 when the folding stroller 100 is pushed, improving the stability of the folding stroller 100, and making the appearance structure of the folding stroller 100 more beautiful and improving the user experience.

[0050] In some embodiments, in the unfolded state, the handle bar 11 and the first link 40 extend rearwardly downward, facilitating forward pushing of the folding stroller 100, and conforming to human use habits, thereby improving user experience.

[0051] Optionally, in the unfolded state, the handle bar 11 and the first link 40 extend in the same direction, and the second link 50 cooperates with the first link 40 to limit the handle bar 11 from rotating rearward, thereby avoiding backward flipping of the handle bar 11 when the folding stroller 100 is pushed, improving the stability of the structure of the folding stroller 100, and ensuring smooth pushing of the folding stroller 100.

[0052] Optionally, the first link 40 and the handle bar 11, the first link 40 and the rear leg group 30, the second link 50 and the handle bar 11, and the third link 60 and the front leg group 20 can be rivet connected, which is convenient to install, has strong carrying capacity, good shock resistance, facilitates reduction of folding difficulty of the folding stroller 100, and improves the stability of the folding stroller 100 when unfolded.

[0053] In some embodiments, the rear leg group 30 includes a rear leg pipe 31, and the first link 40, the second link 50, the handle bar 11, and the rear leg pipe 31 are connected to form a first four-link mechanism, the first link 40 and the second link 50 drive the handle bar 11 to move closer to the rear leg pipe 31 in the front-rear direction, thereby achieving folding of the handle bar 11 relative to the rear leg pipe 31; the four-link mechanism has high stability, long service life, and low manufacturing cost, thereby improving the stability of the folding stroller 100 when pushed, and reducing the manufacturing cost of the folding stroller 100.

[0054] Specifically, when the folding stroller 100 is in the unfolded state, the handle bar 11, the first link 40, the second link 50, and the rear leg pipe 31 form a stable triangular structure, thereby improving the stress intensity of the first four-link mechanism. When the handle bar 11 is subjected to a pushing force, the first four-link mechanism has a certain stress intensity, thereby avoiding deformation or breakage of the handle bar 11, the first link 40, the second link 50, or the rear leg pipe 31 when the folding stroller 100 is pushed. The folding stroller 100 includes a push handle pipe 12 fixedly connected to the handle bar 11, and when the folding stroller 100 is folded, the push handle pipe 12 is driven by a force to rotate the handle bar 11 forward about the first hinge point 41, and the first link 40 is driven by a downward force to rotate rearward about the second hinge point 42. The first link 40 is hinged to the handle bar 11 at the first hinge point 41, and drives the handle bar 11 to move downward. The second link 50 is hinged to the handle bar 11 at the third hinge point 51, and is driven by the handle bar 11 to rotate rearward about the fourth hinge point 52. Under the traction of the first link 40 and the second link 50, the handle bar 11 rotates forward while moving closer to the rear leg pipe 31 in the front-rear direction, thereby achieving folding of the handle bar 11 relative to the rear leg pipe 31.

[0055] In some embodiments, the front leg group 20 comprises a front leg tube 21, the first connecting rod 40, the third connecting rod 60, the front leg tube 21 and the rear leg tube 31 are connected into a second four-bar linkage mechanism, the first connecting rod 40 and the third connecting rod 60 drive the front leg tube 21 to move towards the rear leg tube 31 along the front-rear direction, so as to realize the folding of the front leg tube 21 relative to the rear leg tube 31; the four-bar linkage mechanism has high stability, long service life and low manufacturing cost, improves the stability of the folding stroller 100 when it is pushed, and reduces the manufacturing cost of the folding stroller 100.

[0056] Specifically, when the folding stroller 100 is in the unfolded state, the first connecting rod 40, the third connecting rod 60, the front leg tube 21 and the rear leg tube 31 form a stable four-bar linkage mechanism, so as to avoid the relative rotation of the first connecting rod 40, the third connecting rod 60, the front leg tube 21 and the rear leg tube 31 when the folding stroller 100 is pushed, and ensure the stability of the folding stroller 100 when it is pushed. In addition, when the folding stroller 100 is folded, the first connecting rod 40 is subjected to a downward force and rotates rearward about the second hinge point 42, the first connecting rod 40 is hinged to the third connecting rod 60 at the fifth hinge point 61, drives the third connecting rod 60 to rotate rearward, the third connecting rod 60 is hinged to the front leg tube 21 at the sixth hinge point 62, and the front leg tube 21 is driven by the third connecting rod 60 to move towards the rear leg tube 31 along the front-rear direction, so as to achieve the folding of the front leg tube 21 relative to the rear leg tube 31.

[0057] In combination Figure 1 In some embodiments, the first connecting rod 40 comprises a first rod portion 45, a second rod portion 47 and a connecting portion 46, the first rod portion 45 is connected to the inner side of the handlebar rod 11 along the left-right direction, the second rod portion 47 is connected to the inner side of the rear leg tube 31 along the left-right direction, the first rod portion 45 and the second rod portion 47 have a difference in width along the left-right direction, and the connecting portion 46 is connected to the first rod portion 45 and the second rod portion 47. The first connecting rod 40 is provided with the first rod portion 45 and the second rod portion 47 having different widths along the left-right direction, the width of the first rod portion 45 along the left-right direction is greater than the width of the second rod portion 47 along the left-right direction, and in the folded state, the first connecting rod 40 is located between the rear leg tube 31 and the second connecting rod 50, so as to reduce the occupied space of the folding stroller 100 in the folded state.

[0058] Specifically, in the unfolded state, the folding stroller 100 is symmetrically provided with the front leg tubes 21, the handle bars 11, the first connecting rods 40 and the rear leg tubes 31 along the left and right sides, and in the projection along the up and down direction, the width between the two handle bars 11 along the left and right direction is greater than the width between the two rear leg tubes 31, the width between the two first rod portions 45 is less than the width of the two handle bars 11, the width between the two first rod portions 45 is the same as the width between the two rear leg tubes 31, and the width between the two second rod portions 47 is less than the width between the two rear leg tubes 31. In addition, the third connecting rod 60 is hinged to the second rod portions 47 of the first connecting rods 40, the width of the third connecting rod 60 along the left and right direction is less than the width between the second rod portions 47, and in the projection along the up and down direction, the second rod portions 47 of the folding stroller 100 along the left and right direction in the folded state are located between the two rear leg tubes 31, the two first rod portions 45 are located between the two handle bars 11, and the third connecting rod 60 is located between the two rear leg tubes 31, thereby reducing the occupied volume of the first connecting rods 40 and the third connecting rod 60 after folding, and making the folding stroller 100 occupy a smaller space after folding, which is convenient for carrying and storing.

[0059] In some embodiments, the handle bars 11 include two handle bars 11 spaced apart along the left and right direction, and the handle group 10 further includes a push handle tube 12 arranged along the left and right direction and connected to the two handle bars 11 respectively. When the folding stroller 100 is folded, the push handle tube 12 drives the handle bars 11 to rotate forward and press the first connecting rods 40 downward; when the folding stroller 100 is used, the push handle tube 12 is used to push the folding stroller 100 to move.

[0060] Specifically, the folding stroller 100 is symmetrically provided with two handle bars 11 along the left and right sides, and the two ends of the push handle tube 12 are fixedly connected to the two handle bars 11 along the left and right sides respectively. When the folding stroller 100 is folded, the push handle tube 12 is subjected to a forward force and a downward force at the same time, drives the two handle bars 11 to rotate forward around the first hinge points 41, and presses the first connecting rods 40 downward, so that the first connecting rods 40 rotate backward around the second hinge points 42, the first connecting rods 40 drive the handle bars 11 to move downward, and the second connecting rods 50 rotate backward around the fourth hinge points 52 under the drive of the handle bars 11, so that the handle bars 11 and the push handle tube 12 rotate forward while moving closer to the rear leg group 30 along the front and back direction under the traction of the first connecting rods 40 and the second connecting rods 50, and the handle bars 11 and the push handle tube 12 move closer to the rear leg group 30. When the folding stroller 100 is used, the push handle tube 12 is subjected to a forward force, so as to realize the movement of the folding stroller 100.

[0061] Hereinafter, a folding stroller 100 of one specific embodiment of the present application will be described with reference to the accompanying drawings.

[0062] In combination Figures 1 to 3, the folding stroller 100 is in the unfolded state, the first link 40 is below the handlebar 11, the second link 50 is above the first link 40, the handlebar 11 and the first link 40 extend rearward in the same direction from bottom to top, the front leg group 20 and the second link 50 extend rearward in the same direction from bottom to top, the handlebar 11 and the second link 50 form an included angle, the rear leg group 30 extends forward from bottom to top, the front leg group 20 and the rear leg group 30 form an included angle, the handle 80 and the rear leg group 30 are inclined in the same direction. The first hinge point 41 is located at the upper end of the first link 40 and is hinged to the lower end of the handlebar 11; the second hinge point 42 is located at the lower end of the first link 40 and is hinged to the middle position of the rear leg group 30; the third hinge point 51 is located at the upper end of the second link 50 and is hinged to the middle position of the handlebar 11; the fourth hinge point 52 is located at the lower end of the second link 50 and is hinged to the upper end of the rear leg group 30; the fifth hinge point 61 is located at the rear end of the third link 60; the sixth hinge point 62 is located at the front end of the third link 60 and is hinged to the middle position of the front leg group 20.

[0063] In combination Figure 3 and Figure 4 , when the folding stroller is converted from the unfolded state to the folded state, the handlebar 11 is forced to rotate forward around the first hinge point 41 and press down the first link 40, the first link 40 rotates backward around the second hinge point 42, the third hinge point 51 drives the second link 50 to rotate backward around the fourth hinge point 52, under the drive of the first link 40 and the second link 50, the handlebar 11 rotates forward and moves forward relative to the rear leg group 30 in the front-back direction, realizing the folding of the handlebar 11 relative to the rear leg group 30; at the same time, the first link 40 drives the third link 60 to rotate backward around the fifth hinge point 61, the force of the backward rotation of the third link 60 is converted into the force of the backward rotation of the front leg group 20 at the sixth hinge point 62, the front leg group 20 rotates backward around the second end of the second connecting piece 70 to the vicinity of the rear leg group 30, realizing the folding of the front leg group 20.

[0064] In combination Figure 4 and Figure 5 , when the folding stroller is converted from the unfolded state to the folded state, the handlebar 11 is forced to rotate forward around the first hinge point 41 and press down the first link 40, the first link 40 rotates backward around the second hinge point 42, the third hinge point 51 drives the second link 50 to rotate backward around the fourth hinge point 52, under the drive of the first link 40 and the second link 50, the handlebar 11 rotates forward and moves forward relative to the rear leg group 30 in the front-back direction, realizing the folding of the handlebar 11 relative to the rear leg group 30; at the same time, the first link 40 drives the third link 60 to rotate backward around the fifth hinge point 61, the force of the backward rotation of the third link 60 is converted into the force of the backward rotation of the front leg group 20 at the sixth hinge point 62, the front leg group 20 rotates backward around the second end of the second connecting piece 70 to the vicinity of the rear leg group 30, realizing the folding of the front leg group 20.

[0065] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0066] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0067] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0068] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0069] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0070] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A folding trolley (100), the folding trolley (100) comprising a handle assembly (10), a front leg assembly (20), and a rear leg assembly (30), the folding trolley (100) having a folded state and an unfolded state, characterized in that, The folding trolley (100) further includes a first link (40) and a second link (50). The handle assembly (10) includes a handle bar (11). The first link (40) includes a first hinge point (41) hinged to the handle bar (11) and a second hinge point (42) hinged to the rear leg assembly (30). The second link (50) includes a third hinge point (51) hinged to the handle bar (11) and a fourth hinge point (52) hinged to the rear leg assembly (30). The first link (40), the second link (50), the handle bar (11), and the rear leg assembly (30) are connected to form a first four-bar linkage. The folding trolley (100) also includes a third link (60), which includes a fifth hinge point (61) hinged to the first link (40) and a sixth hinge point (62) hinged to the front leg assembly (20). The first link (40), the third link (60), the front leg assembly (20) and the rear leg assembly (30) are connected to form a second four-bar linkage. The fifth hinge point (61) is located between the first hinge point (41) and the second hinge point (42).

2. The folding trolley (100) according to claim 1, characterized in that, The folding trolley (100) also includes a first crossbar (43) and a first connector (44). The first crossbar (43) is connected to the first connecting rod (40) and extends in the left-right direction. The first connector (44) is fixedly connected to the first crossbar (43). The fifth hinge point (61) of the third connecting rod (60) is hinged to the first connector (44).

3. The folding trolley (100) according to claim 2, characterized in that, The third link (60) includes a second crossbar (63) and a side bar (64). The second crossbar (63) extends in the left-right direction and is hinged to the first connector (44). The side bar (64) is hinged to the front foot assembly (20).

4. The folding trolley (100) according to claim 1, characterized in that, The folding trolley (100) also includes a second connector (70), which has a middle part, a first end and a second end. The first end and the second end are located on opposite sides of the middle part. The upper end of the rear leg assembly (30) is connected to the middle part. The lower end of the second connecting rod (50) is rotatably connected to the first end. The upper end of the front leg assembly (20) is rotatably connected to the second end.

5. The folding trolley (100) according to claim 4, characterized in that, The folding trolley (100) also includes a handle (80) which is connected to the second connector (70).

6. The folding trolley (100) according to claim 1, characterized in that, In the deployed state, the front leg assembly (20) and the second link (50) extend backward from bottom to top; and / or, in the deployed state, the front leg assembly (20) and the second link (50) extend in the same direction.

7. The folding trolley (100) according to claim 1, characterized in that, In the unfolded state, the handle (11) and the first link (40) extend backward from bottom to top; and / or, in the unfolded state, the handle (11) and the first link (40) extend in the same direction.

8. The folding trolley (100) according to claim 1, characterized in that, The rear leg assembly (30) includes a rear leg tube (31), and the first link (40), the second link (50), the handle bar (11) and the rear leg tube (31) are connected to form the first four-bar linkage. And / or, the front leg assembly (20) includes a front leg tube (21), and the first link (40), the third link (60), the front leg tube (21) and the rear leg tube (31) are connected to form a second four-bar linkage.

9. The folding trolley (100) according to claim 8, characterized in that, The first link (40) includes a first rod portion (45), a second rod portion (47), and a connecting portion (46). The first rod portion (45) is connected to the inner side of the handle (11) in the left-right direction, and the second rod portion (47) is connected to the inner side of the rear leg tube (31) in the left-right direction. The first rod portion (45) and the second rod portion (47) have a height difference in the left-right direction. The connecting portion (46) is connected to the first rod portion (45) and the second rod portion (47).

10. The folding trolley (100) according to claim 1, characterized in that, The handlebars (11) include two that are spaced apart in the left-right direction. The handlebar assembly (10) also includes a push handle tube (12) that is arranged in the left-right direction and is connected to the two handlebars (11) respectively.

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