CN213292400U - Folding cart - Google Patents

Abstract

The utility model discloses a folding shallow, its shallow frame includes the fore-stock, the after-poppet reaches and encloses the frame, it includes down encloses the frame and encloses the frame on with to enclose the frame wherein enclosing the frame, the lower part and the fore-stock and/or the after-poppet rotation that enclose the frame down are connected, the lower part that encloses the frame on with down encloses the upper portion of frame and connect around the primary shaft rotation ground, this shallow frame still includes the switching-over push rod frame, the switching-over push rod frame is including lower push rod frame and the upper push rod frame that connects around the secondary shaft rotation ground, the lower part of lower push rod frame is connected with the lower part rotation ground that encloses the frame down, the shallow frame is in under the expansion state and when the switching-over push rod frame is in forward user state, switching-over push rod frame and enclosing frame relatively fixed, and the axial lead extension collineatly. When the cart frame is folded, the reversing push rod frame can rotate and be folded together with the surrounding frame relative to the front support and the rear support, so that the reversing push rod frame and other rods in the cart frame are tightly folded together, and the overall size of the folded cart frame is reduced.

Description

Folding cart

Technical Field

The utility model relates to a folding shallow especially relates to a folding shallow that push rod can commutate.

Background

In the prior art, in order to facilitate adults to observe children in the stroller at any time when pushing the stroller, reversing push rods are additionally arranged on a plurality of strollers. However, due to the existence of the reversing push rod, the folded size of the folded stroller frame is very large, which is inconvenient for daily use and storage, and especially, the foldable stroller frame cannot be folded to a small size and can be carried on board when taking an airplane, which brings inconvenience to users.

Disclosure of Invention

The utility model aims at providing a folding shallow that folding back size is little and push rod can commutate.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a folding cart comprises a cart frame with an unfolding state and a folding state, a front wheel assembly and a rear wheel assembly which are arranged at the bottom of the cart frame, and a locking mechanism used for locking the cart frame in the unfolding state, wherein the cart frame comprises a front support, a rear support and a surrounding frame which are connected in a mutual rotating manner, the surrounding frame comprises a lower surrounding frame and an upper surrounding frame, the lower part of the lower surrounding frame is rotationally connected with the front support and/or the rear support, the lower part of the upper surrounding frame is rotationally connected with the upper part of the lower surrounding frame around a first shaft, the cart frame further comprises a reversing push rod frame, the reversing push rod frame comprises a lower push rod frame and an upper push rod frame, the upper part of the lower push rod frame is rotationally connected with the lower part of the upper push rod frame around a second shaft, the lower part of the lower push rod frame is rotationally connected with the lower part of the lower surrounding frame, the cart frame is in a unfolding state, and the reversing push rod frame has a forward use state of gradually inclining upwards from front to back and a reverse use state of gradually inclining upwards from back to front; when the reversing push rod frame is in a forward using state, the reversing push rod frame and the surrounding frame are relatively fixed, and the axial leads of the first shaft and the second shaft extend in a collinear manner.

Preferably, the upper part of the lower push rod frame is connected with the lower part of the upper push rod frame through a first rotary joint, the upper part of the lower enclosure frame is connected with the lower part of the upper enclosure frame through a second rotary joint, and a connecting structure which is matched with the first rotary joint and the second rotary joint to relatively fix the first rotary joint and the second rotary joint is arranged between the first rotary joint and the second rotary joint.

Furthermore, the connecting structure comprises a protrusion arranged on one of the first rotating joint and the second rotating joint and a clamping groove arranged on the other rotating joint, and the protrusion is clamped into the clamping groove in a matched manner in the process of converting the reverse use state into the forward use state of the reversing push rod frame.

Still further, the width dimension of the protrusion is gradually increased in the insertion direction of the protrusion into the card slot.

In a preferred arrangement, the first revolute joint is provided on an outer side of the second revolute joint in the lateral direction, the projection is provided on an outer side portion of the second revolute joint, and the engaging groove is provided on an inner side portion of the first revolute joint.

Preferably, when the reversing push rod frame is in the forward use state and the stroller frame is switched from the unfolded state to the folded state, the upper enclosure frame and the upper push rod frame rotate around the axial leads of the first shaft and the second shaft together and are folded relative to the lower enclosure frame and the lower push rod frame respectively.

Preferably, the lower portion of the lower push rod frame is rotatably connected to the lower enclosure frame about a third axis, and the lower portion of the lower enclosure frame is rotatably connected to the front bracket and/or the rear bracket about the third axis.

Further, the upper part of the front bracket, the upper part of the rear bracket, the lower part of the lower surrounding frame and the lower part of the lower push rod frame are connected together in a rotating way around the third shaft.

Preferably, two of the upper portion of the front frame, the upper portion of the rear frame, and the lower portion of the lower frame are rotatably connected and a third one of the upper portion of the front frame, the upper portion of the rear frame, and the lower portion of the lower frame is rotatably connected together about a same rotation center line, the stroller frame further includes a connecting frame, a rear support frame, and a seat frame, the rear support frame is rotatably connected to the rear support frame, the upper portion of the rear support frame is rotatably connected to the lower portion of the upper frame, the connecting frame is rotatably connected between the front support frame and the lower portion of the rear support frame, the rear portion of the seat frame is rotatably connected to the rear support frame, and the front portion of the seat frame is connected to the lower frame in a relatively rotatable and relatively slidable manner.

Furthermore, when the reversing push rod frame is in the reverse use state, the reversing push rod frame is fixedly connected to the seat frame.

In another preferred embodiment, two of the upper portion of the front frame, the upper portion of the rear frame, and the lower portion of the lower frame are rotatably connected and a third one of them is rotatably connected, or the three are rotatably connected around the same rotation center line, the stroller frame further includes a connecting frame, a rear frame, and a seat frame, the rear frame is rotatably connected to the rear frame, the upper portion of the rear frame is rotatably connected to the lower portion of the upper frame, the connecting frame includes a front connecting frame and a rear connecting frame that are rotatably connected, a front portion of the front connecting frame is rotatably connected to the front frame, a rear portion of the rear connecting frame is rotatably connected to the rear frame, a lower portion of the rear frame is relatively rotatably and slidably connected to the rear connecting frame, and a rear portion of the seat frame is rotatably connected to the rear frame, the front part of the seat frame can be connected with the lower surrounding frame in a relatively rotating and relatively sliding way.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a folding shallow, when its shallow frame is folding, go up to enclose frame and last push rod frame and can rotate around the axial lead of primary shaft and secondary shaft simultaneously and enclose the frame respectively relatively down, the lower push rod frame rotates to draw in to make the switching-over push rod frame draw in along with enclosing frame relative fore-stock, after-poppet rotate together, make other members in the switching-over push rod frame and the shallow frame draw in together closely, thereby reduce the whole size of folding back shallow frame.

Drawings

Fig. 1 is a schematic perspective view of a folding cart according to embodiment 1 of the present invention in an unfolded state and a reversing push rod frame in a forward use state;

FIG. 2 is a side view of the folding cart of FIG. 1;

fig. 3 is a schematic perspective view of the foldable cart according to embodiment 1 of the present invention in an unfolded state and in a reverse use state;

FIG. 4 is a side view of the folding cart of FIG. 3;

fig. 5 is a schematic perspective view of the folding cart according to embodiment 1 of the present invention during folding;

FIG. 6 is a side view of the folding cart of FIG. 5;

fig. 7 is a side view of the folding cart according to embodiment 1 of the present invention in a folded state;

fig. 8 is a schematic side view of the foldable stroller according to embodiment 2 of the present invention in an unfolded state and in a forward use state of the reversing push rod frame;

fig. 9 is a schematic side view of the foldable stroller according to embodiment 2 of the present invention in an unfolded state and in a reverse use state;

wherein: 1. a front bracket; 11. a front support rod; 2. a rear bracket; 21. a rear support rod; 3. a surrounding frame; 31. an upper enclosure frame; 32. a lower enclosure frame; 33. a second revolute joint; 34. a first shaft; 35. a protrusion; 4. a connecting frame; 41. a front connecting frame; 42. a rear connecting frame; 5. a rear support frame; 51. a sliding sleeve; 6. a seat frame; 61. a seat post; 7. a reversing push rod frame; 71. an upper push rod frame; 72. an upper push rod frame; 73. a first revolute joint; 74. a second shaft; 75. a reversing locking member; 76. a card slot; 8. a primary locking joint; 9. a sliding sleeve; 10. a third axis; 20. a front wheel assembly; 30. a rear wheel assembly.

Detailed Description

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

Example 1

Referring to fig. 1 to 7, the folding stroller includes a stroller frame having an unfolded state and a folded state, and a front wheel assembly 20 and a rear wheel assembly 30 provided at a bottom of the stroller frame.

The cart frame comprises a front support 1, a rear support 2 and an enclosing frame 3 which are mutually and rotatably connected, wherein a front wheel assembly 20 is arranged at the bottom of the front support 1, and a rear wheel assembly 30 is arranged at the bottom of the rear support 2; the enclosure frame 3 includes a lower enclosure frame 32 and an upper enclosure frame 31, a lower portion of the lower enclosure frame 32 is rotatably connected to the front frame 1 and/or the rear frame 2, and a lower portion of the upper enclosure frame 31 is rotatably connected to an upper portion of the lower enclosure frame 32 about a first axis 34.

The cart frame also comprises a reversing push rod frame 7, the reversing push rod frame 7 comprises a lower push rod frame 72 and an upper push rod frame 71, the upper part of the lower push rod frame 72 is rotationally connected with the lower part of the upper push rod frame 71 around a second shaft 74, the lower part of the lower push rod frame 72 is rotationally connected with the lower part of the lower surrounding frame 32,

when the cart frame is in an unfolded state, the reversing push rod frame 7 has a forward using state and a reverse using state, and in the reverse using state, as shown in fig. 3 and 4, the reversing push rod frame 7 gradually inclines upwards from back to front; in the forward use state, as shown in fig. 1 and 2, the reversing push rod frame 7 extends obliquely upward from front to back, the reversing push rod frame 7 is fixed relative to the surrounding frame 3, and the first shaft 34 and the second shaft 74 extend in a collinear manner. Thus, when the stroller frame is folded, the upper surrounding frame 31 and the upper push rod frame 71 can rotate around the axial lead of the first shaft 34 and the second shaft 74 at the same time and respectively rotate and fold relative to the lower surrounding frame 32 and the lower push rod frame 72, so that the reversing push rod frame 7 rotates and folds relative to the front support 1 and the rear support 2 along with the surrounding frame 3, the reversing push rod frame 7 and other rod pieces in the stroller frame are tightly folded together, and the overall size of the folded stroller frame is reduced.

Referring to fig. 1 to 7, in the reversing push rod frame 7, the upper part of the lower push rod frame 72 is connected with the lower part of the upper push rod frame 71 through a first rotary joint 73; in the enclosure frame 3, the upper part of the lower enclosure frame 32 is connected with the lower part of the upper enclosure frame 31 through the second rotary joint 33, and a connecting structure which is matched with the first rotary joint 73 and the second rotary joint 33 to relatively fix the two is arranged between the two.

Specifically, in this embodiment, the reversing push rod frame 7 and the enclosure frame 3 are both in a U shape with the opening facing downward, and the rod portions on the left and right sides of the reversing push rod frame 7 are located outside the enclosure frame 3 in the left and right direction. The connecting structure comprises a clamping groove 76 arranged on the inner side part of the first rotating joint 73 and a bulge 35 arranged on the outer side part of the second rotating joint 33, wherein the width dimension of the bulge 35 is gradually increased along the insertion direction of the bulge 35 into the clamping groove 76, and is gradually increased from front to back; the notch of the catch 76 is arranged facing backwards and is shaped to match the shape of the projection 35. In the process of converting the reversing push rod frame 7 from the reverse use state to the forward use state, the protrusion 35 is correspondingly and fittingly clamped into the clamping groove 76, so that the axial leads of the first shaft 34 and the second shaft 74 extend in a collinear manner. In other embodiments, it is also possible to provide the catch on the second revolute joint 33 and the projection 35 on the first revolute joint 73.

The lower part of the lower push rod frame 72 is connected with the lower surrounding frame 32 in a rotating way around the third shaft 10, when the reversing push rod frame 7 rotates around the third shaft 10 relative to the surrounding frame 3, the switching between the forward using state and the reverse using state can be realized, and the lower part of the lower surrounding frame 32 is also connected with the front bracket 1 and/or the rear bracket 2 in a rotating way around the third shaft 10. Specifically, two of the upper portion of the front bracket 1, the upper portion of the rear bracket 2, and the lower portion of the lower peripheral frame 32 are rotatably connected and a third one is rotatably connected to one of the two, or the three are rotatably connected together about the same rotation center line. In the stroller frame of the present embodiment, the upper portion of the front frame 1, the upper portion of the rear frame 2, the lower portion of the lower peripheral frame 32, and the lower portion of the lower push rod bracket 72 are connected together so as to be rotatable about the third axis 10, and these four portions are connected together so as to be rotatable relative to each other via the main rotary joint 8.

The cart frame further comprises a connecting frame 4, a rear support frame 5 and a seat frame 6, wherein the rear support frame 5 is rotatably connected with the rear support frame 2, the upper portion of the rear support frame 5 is rotatably connected with the lower portion of the upper enclosing frame 31, the connecting frame 4 is rotatably connected between the front support frame 1 and the lower portion of the rear support frame 5, the rear portion of the seat frame 6 is rotatably connected with the rear support frame 5, and the front portion of the seat frame 6 can be connected with the lower enclosing frame 32 in a relatively rotating and relatively sliding manner.

In this embodiment, specifically, the front bracket 1 has two groups of front struts 11 respectively disposed on the left and right sides and extending in the up-down direction, and a front wheel assembly 20 is disposed at the bottom of each group of front struts 11; the rear bracket 2 is provided with two groups of rear supporting rods 21 which are respectively arranged at the left side and the right side and extend along the vertical direction, and the bottom of each group of rear supporting rods 21 is provided with a rear wheel assembly 30; the left side and the right side of the cart frame are respectively provided with a group of main rotating joints 8 for the rotating connection between the upper part of the front support rod 11, the upper part of the rear support rod 21, the side rod of the lower surrounding frame 32 and the side rod of the lower support rod frame 72. The connecting frame 4 and the back support frame 5 are respectively provided with two groups which are respectively arranged at the left side and the right side, the seat frame 6 comprises two groups of seat rods 61 which are respectively arranged at the left side and the right side, the rear parts of the seat rods 61 are rotatably connected on the back support frame 5, the front parts of the seat rods 61 are slidably sleeved with sliding sleeves 9, and the sliding sleeves 9 are rotatably connected on side rods of the lower surrounding frame 32.

Reversing locking pieces 75 are fixedly arranged on the side rods on the left side and the right side of the lower push rod frame 72 in the reversing push rod frame 7, and when the reversing push rod frame 7 is in a forward use state, the reversing locking pieces 75 are locked on the side rods of the lower enclosure frame 32; when the reversing push rod frame 7 is in a reverse use state, the reversing locking piece 75 is locked on the seat rod 61.

To sum up, the utility model discloses a folding cart, under its expansion state, switching-over push rod frame 7 can use forward or reverse, satisfies the user and adjusts the different needs of, the reverse push away shallow; when the stroller frame needs to be folded, the reversing push rod frame 7 is firstly converted into a forward use state, the reversing push rod frame 7 and the surrounding frame 3 are mutually fixed, then the upper push rod frame 71 and the upper surrounding frame 31 are driven to rotate around the axial lead of the first shaft 34 and the axial lead of the second shaft 74 together, so that the reversing push rod frame 7 and the surrounding frame 3 can be folded, and the reversing push rod frame 7 and the surrounding frame 3 are further driven to rotate, so that the reversing push rod frame 7 and the surrounding frame 3 can rotate relative to the front support 1 and the rear support 2, so that the rod pieces in the stroller frame can rotate mutually and can be gradually folded. The folded stroller frame is shown in fig. 7, and has a very compact structure and a small size.

Example 2

Referring to fig. 8 and 9, the folding cart of embodiment 1 is different from the folding cart of embodiment 4 in connection relationship between the front frame 1 and the rear frame 2 and the connection frame 4 and the rear frame 5. The method specifically comprises the following steps:

in the stroller frame of the present embodiment, the upper portion of the front frame 1, the upper portion of the rear frame 2, the lower portion of the lower peripheral frame 32, and the lower portion of the lower push rod bracket 72 are connected together so as to be rotatable about the third axis 10, and these four portions are connected together so as to be rotatable relative to each other via the main rotary joint 8.

The cart frame further comprises a connecting frame 4, a rear supporting frame 5 and a seat frame 6, wherein the rear supporting frame 5 is rotatably connected with the rear support frame 2, the upper part of the rear supporting frame 5 is rotatably connected with the lower part of the upper enclosing frame 31, the connecting frame 4 comprises a front connecting frame 41 and a rear connecting frame 42, the rear part of the front connecting frame 41 is rotatably connected with the front part of the rear connecting frame 42, the front part of the front connecting frame 41 is rotatably connected on the front support frame 1, the rear part of the rear connecting frame 42 is rotatably connected on the rear support frame 2, the lower part of the rear supporting frame 5 can be relatively rotatably and relatively slidably connected on the rear connecting frame 42, specifically, the lower part of the rear supporting frame 5 is rotatably connected with a sliding sleeve 51, and the sliding sleeve 51 is slidably sleeved on the rear connecting frame 42; the rear part of the seat frame 6 is rotatably connected to the back support frame 5, and the front part of the seat frame 6 is connected to the lower surrounding frame 32 in a manner of rotating and sliding relatively.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. A folding cart, including the shallow frame that has expansion state and fold condition, locate the front wheel subassembly and the rear wheel subassembly of shallow frame bottom to and be used for with the locking mechanical system of shallow frame locking under the expansion state, its characterized in that: the cart frame comprises a front support, a rear support and an enclosing frame which are mutually rotationally connected, wherein the enclosing frame comprises a lower enclosing frame and an upper enclosing frame, the lower part of the lower enclosing frame is rotationally connected with the front support and/or the rear support, the lower part of the upper enclosing frame is rotationally connected with the upper part of the lower enclosing frame around a first shaft,

the cart frame further comprises a reversing push rod frame, the reversing push rod frame comprises a lower push rod frame and an upper push rod frame, the upper portion of the lower push rod frame is rotatably connected with the lower portion of the upper push rod frame around a second shaft, the lower portion of the lower push rod frame is rotatably connected with the lower portion of the lower enclosing frame, the cart frame is in a unfolding state, and the reversing push rod frame has a forward use state and a reverse use state, wherein the forward use state gradually extends upwards in an inclined mode from front to back, and the reverse use state gradually extends upwards in an inclined mode from back to front; when the reversing push rod frame is in a forward using state, the reversing push rod frame and the surrounding frame are relatively fixed, and the axial leads of the first shaft and the second shaft extend in a collinear manner.

2. The folding cart of claim 1, wherein: the upper portion of lower push rod frame with connect through first rotation joint between the lower part of upper push rod frame, enclose the upper portion of frame down with enclose the lower part of frame on through second rotation joint connection, first rotation joint with be provided with between the second rotation joint and mutually support in order to be with both relatively fixed's connection structure.

3. The folding cart of claim 2, wherein: the connecting structure comprises a protrusion arranged on one of the first rotating joint and the second rotating joint and a clamping groove arranged on the other rotating joint, and the protrusion is clamped in the clamping groove in a matched mode in the process that the reversing push rod frame is converted from the reverse using state to the forward using state.

4. The folding cart of claim 3, wherein: the width dimension of the protrusion is gradually increased along the insertion direction of the protrusion into the card slot.

5. The folding cart of claim 3, wherein: the first rotating joint is arranged on the outer side of the second rotating joint in the left-right direction, the protrusion is arranged on the outer side of the second rotating joint, and the clamping groove is arranged on the inner side of the first rotating joint.

6. The folding cart of claim 1, wherein: when the reversing push rod frame is in the forward using state and the cart frame is converted from the unfolding state to the folding state, the upper enclosing frame and the upper push rod frame jointly rotate around the axial lead of the first shaft and the second shaft and are respectively folded relative to the lower enclosing frame and the lower push rod frame.

7. The folding cart of claim 1, wherein: the upper part of the front bracket, the upper part of the rear bracket, the lower part of the lower surrounding frame and the lower part of the lower push rod frame are connected together in a rotating way around a third axis.

8. The folding cart according to any one of claims 1 to 7, characterized in that: the stroller frame further comprises a connecting frame, a rear support frame and a seat frame, wherein the rear support frame is rotationally connected with the rear support frame, the upper part of the rear support frame is rotationally connected with the lower part of the upper enclosure frame, the connecting frame is rotationally connected between the front support frame and the lower part of the rear support frame, the rear part of the seat frame is rotationally connected with the rear support frame, and the front part of the seat frame can be connected with the lower enclosure frame in a relative rotating and relative sliding manner.

9. The folding cart of claim 8, wherein: when the reversing push rod frame is in the reverse use state, the reversing push rod frame is fixedly connected to the seat frame.

10. The folding cart according to any one of claims 1 to 7, characterized in that: wherein two of the upper part of the front bracket, the upper part of the rear bracket and the lower part of the lower enclosure frame are rotationally connected and a third one of the two parts is rotationally connected, or the three parts are rotationally connected together around the same rotation central line, the stroller frame further comprises a connecting frame, a rear support frame and a seat frame, the rear support frame is rotationally connected with the rear support frame, the upper part of the rear support frame is rotationally connected with the lower part of the upper enclosure frame, the connecting frame comprises a front connecting frame and a rear connecting frame which are rotationally connected, the front part of the front connecting frame is rotationally connected with the front bracket, the rear part of the rear connecting frame is rotationally connected with the rear support frame, the lower part of the rear support frame can be relatively rotationally and relatively slidably connected with the rear connecting frame, and the rear part of the seat frame is rotationally connected with the rear support frame, the front part of the seat frame can be connected with the lower surrounding frame in a relatively rotating and relatively sliding way.

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