CN212373462U

CN212373462U - Single-hand automatic folding cart

Info

Publication number: CN212373462U
Application number: CN202020518446.4U
Authority: CN
Inventors: 雷林龙; 李志国
Original assignee: Ningbo Mybaby Baby Products Manufacturing Co Ltd
Current assignee: Ningbo Mybaby Baby Products Manufacturing Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-01-19
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a single-hand automatic folding cart, which comprises a front foot pipe group, a rear foot pipe group, a handle pipe, a bent pipe, a brace rod, a folding rod, a seat pipe, a handrail pipe and the like, wherein the folding rod consists of a front rod, a rear rod and a second hinge point, a linkage rod and a folding tension spring are mainly arranged on the folding rod, the lower end of the linkage rod is simultaneously rotated and axially and slidably connected to the rear rod, and the two ends of the folding tension spring are respectively hooked on the second hinge point and the lower end of the linkage rod; meanwhile, a vehicle folding torsion spring is arranged on a first hinge point formed between the lower end of the support rod and the rear foot tube group, and two support legs of the vehicle folding torsion spring are respectively pushed against the support rod and the rear foot tube group. Therefore, potential energy of the cart folding tension spring and the cart folding torsion spring is accumulated, so that a user can directly fold and stand the cart in one second by one key without bending down, and can open the cart once the cart is thrown, and the operation purpose of automatically folding the cart by one hand is perfectly achieved. In addition, the improved cart also has the advantages of simple structure, low production cost, difficult damage, easy use and the like.

Description

Single-hand automatic folding cart

Technical Field

The utility model relates to a shallow that supplies the baby to take specifically indicates a shallow is closed to singlehanded automation.

Background

At present, the baby goes out to all can take the shallow, can alleviate father and mother's burden of going out, can let the baby go out more comfortablely again, and for the convenience of hand-carrying of shallow, for example walk to bear or put in the car, still can design into beta structure with the shallow usually, and this kind of beta structure is along with the continuous expansion in baby articles for use market, also continuous perfect, for example the receipts of earliest shallow all need both hands operation unblock, the use is comparatively troublesome, it just can operate the shallow unblock to develop now only to need the one hand, the use is light undoubtedly, laborsaving. However, the structure of the conventional single-hand automatic folding cart is too complex, and usually a plurality of link components are added to form a linkage structure, so that the production cost of the cart is increased, and the complex structure is easily damaged, which affects the service life of the cart. In addition, although the complete unlocking by one hand and one key is really realized, the folding process of the cart still needs to be assisted by feet or the other hand, and the folding process is accompanied with the process of stooping operation of a user, so that the cart is very tired, the cart cannot be automatically folded by one key in the true sense, and obviously, the using process has some defects.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect and provide a simple structure, low in production cost, not fragile, use light, can accomplish in the real sense that a key is automatic to be closed the automatic shallow that closes of one hand.

The technical problem of the utility model is realized through following technical scheme:

a single-hand automatic folding cart comprises a front foot pipe group, a rear foot pipe group, a handle pipe, a bent pipe, a stay bar, a folding rod, a seat pipe and an armrest pipe; a rotary joint and a joint lock arranged in the rotary joint are coaxially hinged between the upper end of the front foot tube group, the upper end of the rear foot tube group and the lower end of the handle tube; the lower end of the elbow is rotationally connected with the upper end of the handle pipe, and a knob and a secondary lock for controlling the joint lock to unlock are arranged on the elbow; the upper end of the stay bar is hinged with the lower end of the bent pipe, and a first hinge point is arranged between the lower end of the stay bar and the rear foot pipe group; the front end of the seat pipe is hinged on the front foot pipe group, and the rear end is hinged on the support rod; the rear end of the handrail tube is hinged on the handle tube; the folding rod comprises a front rod with the front end hinged to the front foot tube group and a rear rod with the rear end hinged to the rear foot tube group, a second hinge point is arranged between the rear end of the front rod and the front end of the rear rod, a linkage rod and a car folding tension spring are further arranged on the folding rod, the upper end of the linkage rod is hinged to the handle tube, the lower end of the linkage rod is simultaneously connected to the rear rod in a rotating and axial sliding mode, the upper end of the car folding tension spring is hooked to the second hinge point, and the lower end of the car folding tension spring is hooked to the lower end of the linkage rod; the first hinge point is provided with a vehicle folding torsion spring, and two support legs of the vehicle folding torsion spring are respectively pushed on the support rod and the rear foot tube group.

The lower end of the linkage rod is connected with the rear rod in an axially sliding and rotating mode, a sliding groove extending along the axial direction is formed in the rear rod, a sliding block movably assembled in the sliding groove is correspondingly arranged at the lower end of the linkage rod, and the lower end of the linkage rod is assembled in the sliding groove of the rear rod through the sliding block in a sliding mode and is connected in a rotating mode.

The first hinged point is provided with a plastic sleeve for installing the vehicle folding torsion spring.

The linkage rod is an S-shaped rod.

And a rotation limiting plate is arranged at the second hinge joint.

The lower end of the elbow is provided with a connecting section extending downwards, and the upper end of the stay bar is hinged with the connecting section.

The trolley is folded, the front foot pipe group, the rear foot pipe group and the handle pipe are folded around the rotating joint, the bent pipe and the handle pipe are folded and attached to the handle pipe, the seat pipe is driven by the support rod to be folded and attached to the rear foot pipe group together, and then the two support legs of the folding torsion spring are driven to mutually draw close to accumulate potential energy; the front rod and the rear rod are mutually folded and attached to drive the second hinge point to move downwards, the lower end of the linkage rod rotates relative to the rear rod and slides downwards in the axial direction, and then the tension spring for retracting is driven to store potential energy.

Compared with the prior art, the utility model designs a cart structure which can realize one-key single-hand automatic folding in the true sense, and is mainly characterized in that a linkage rod and a folding tension spring are arranged on a folding rod, the folding rod comprises a front rod with the front end hinged on a front foot tube group and a rear rod with the rear end hinged on a rear foot tube group, a second hinge point is arranged between the rear end of the front rod and the front end of the rear rod, the lower end of the linkage rod is simultaneously connected on the rear rod in a rotating and axial sliding manner, the upper end of the folding tension spring is hooked on the second hinge point, and the lower end of the folding tension spring is hooked on the lower end of the linkage rod; meanwhile, a vehicle folding torsion spring is arranged on a first hinge point formed between the lower end of the stay bar and the rear foot tube group, and two support legs of the vehicle folding torsion spring are respectively pushed against the stay bar and the rear foot tube group. Thus, when the whole cart is folded, the cart folding tension spring can be automatically in a state of stretching and storing potential energy along with the folding operation, and the cart folding torsion spring can be automatically in a state of mutually drawing close and storing potential energy, namely the whole cart can be automatically folded and drawn close by the process of storing potential energy by the cart folding tension spring and the cart folding torsion spring; once the cart is unfolded, the cart folding tension spring and the cart folding torsion spring automatically push the cart to be unfolded while releasing potential energy, so that the cart can be folded and erected in one second by one key and unfolded once being thrown on the basis that a user does not bend down, and the operation purpose of automatically folding and unfolding the cart by one hand is perfectly achieved. In addition, the improved cart also has the advantages of simple structure, low production cost, difficult damage, easy use and the like.

Drawings

Fig. 1 is a schematic view of the unfolding structure of the present invention.

Fig. 2 is a schematic structural diagram of the folding process of the present invention.

Fig. 3 is a schematic view of the folding structure of the present invention.

Fig. 4 is a perspective view of fig. 1.

Fig. 5 is an enlarged view of fig. 4 at a.

Fig. 6 is a schematic diagram of the structure of fig. 4 in the folding process.

Fig. 7 is an enlarged view of fig. 6 at B.

Fig. 8 is an enlarged view of fig. 1 at C.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in fig. 1 to 8, the folding bicycle comprises a front foot pipe group 1, a front wheel 11, a rear wheel 2, a rear foot pipe group 21, a rear wheel 3, a handle pipe 4, a bent pipe 41, a lock 42, a connecting section 43, a knob, a seat pipe 5, a leg rest pipe 51, a leg rest pipe 52, a connecting piece 6, a stay bar 61, a plastic sleeve 62, a folding torsion spring 7, a linkage bar 8, a folding bar 81, a front bar 82, a rear bar 83, a rotation limiting plate 84, a folding tension spring 9, a rotation joint 10, a handrail pipe 12, a first hinge point 13, a second hinge point 14 and a tent support.

A single-hand automatic folding cart is shown in figures 1 and 4, and relates to a baby product for a baby to go out and take.

The front foot tube group 1 and the rear foot tube group 2 are both formed by a U-shaped tube with an upward opening, front wheels 11 are respectively installed on two sides of the bottom of the front foot tube group 1, rear wheels 21 are respectively installed on two sides of the bottom of the rear foot tube group 2, the handle tubes 3 are totally two and are respectively arranged on two sides of the cart, coaxial hinged rotary joints 9 are arranged among the upper end of the front foot tube group 1, the upper end of the rear foot tube group 2 and the lower end of the handle tubes 3, specifically, the upper end of one of the front foot tube group 1, the upper end of one of the rear foot tube group 2 and the lower end of one of the handle tubes 3 which are positioned on the same side of the cart are respectively provided with the coaxial hinged rotary joints 9, and the two rotary joints are respectively provided with an independently arranged joint lock (not shown in.

The elbow 4 is a U-shaped pipe with a downward opening, two lower ends of the elbow 4 are just hinged to the upper ends of the two handle pipes 3 at the same side, a knob 43 and a second lock 41 for controlling unlocking of a joint lock in the rotary joint 9 are further arranged in the middle of the elbow 4, the second lock mainly plays a role in safety protection of the knob 43, namely the knob 43 can be pressed only by releasing the second lock 41, and then the joint lock is released by pulling a hidden built-in pull rope.

Meanwhile, the rib bracket 14 for the awning may be designed to be detachably mounted at the upper end of the handle pipe 3 through a both-end fastener, and to realize folding and unfolding of the awning.

Vaulting pole 6 have two to set up respectively in the both sides of shallow, 6 upper ends of every vaulting pole all are articulated with 4 lower extremes of return bend, concrete structure is: the lower end of the elbow 4 is provided with a connecting section 42 extending downwards, and the upper end of the stay bar 6 is hinged with the connecting section 42; a first hinge point 12 is arranged between the lower end of each support rod 6 and the rear foot tube group 2 at the same side position, a plastic sleeve 61 and a vehicle folding torsion spring 62 mounted on the plastic sleeve are arranged at the first hinge point, and two support legs of the vehicle folding torsion spring are respectively pushed on the support rods 6 and the rear foot tube group 2.

The front end of the seat tube 5 is hinged on the front foot tube group 1, the front end part is also provided with a shank leaning tube 51, and the rear end of the seat tube 5 is hinged on the stay bar 6 through a connecting piece 52; the rear end of the handrail tube 10 is hinged on the handle tube 3.

The two folding rods 8 are respectively arranged at two sides of the cart, and the structure design of the two folding rods 8 is completely the same, so the embodiment will be described in detail by taking the structure of only one folding rod 8 as an example.

The folding rod 8 is composed of a front rod 81 with the front end hinged on the front foot pipe group 1 and a rear rod 82 with the rear end hinged on the rear foot pipe group 2, a second hinge point 13 is arranged between the rear end of the front rod 81 and the front end of the rear rod 82, a rotation limiting plate 83 is required to be arranged at the second hinge point, and the purpose is that: when the stroller is unfolded for use, i.e. the front rod 81 and the rear rod 82 are pulled apart from each other, the rotation limiting plate 83 can block the second hinge point 13 from moving further upward, so as to prevent the front rod 81 and the rear rod 82 from being folded unnecessarily.

The folding rod 8 is also provided with a linkage rod 7 and a vehicle folding tension spring 84. Wherein, the gangbar 7 is an S-shaped rod, the upper end of the gangbar is hinged on the handle pipe 3, the lower end is simultaneously connected on the rear rod 82 in a rotating and axial sliding way, the concrete structure is as shown in figure 8: the rear rod 82 is provided with a sliding groove 821 extending along the axial direction, which is a generally strip-shaped straight groove and penetrates through the rear rod 82, and correspondingly, the lower end of the linkage rod 7 is provided with a sliding block 71 which is movably assembled in the sliding groove 821; thus, the lower end of the linkage rod 7 can slide back and forth in the sliding groove 821 of the rear rod 82 through the sliding block 71 in a reciprocating manner in the front and rear axial directions, and can rotate around the sliding block 71.

The upper end of the car-folding tension spring 84 is hooked on the second hinge point 13, and the lower end of the car-folding tension spring 84 is hooked on the sliding block 71 at the lower end of the linkage rod 7, so that the car-folding tension spring can synchronously move along with the axial sliding of the sliding block.

When the utility model is folded as shown in fig. 2, fig. 3 and fig. 6, after the joint lock is controlled to be released by one key through the one-hand operation knob 43 and the two-way lock 41, the front foot tube group 1, the rear foot tube group 2 and the handle tube 3 can be folded around the rotary joint 9, the corresponding bent tube 4 and the handle tube 10 are folded and attached to the handle tube 3, the stay bar 6 drives the seat tube 5 to be folded and attached to the rear foot tube group 2 together, and then the two support legs of the folding torsion spring 62 are driven to be mutually close to accumulate potential energy; the front rod 81 and the rear rod 82 are folded and attached to each other to drive the second hinge point 13 to move downwards, and the sliding block 71 at the lower end of the linkage rod 7 simultaneously rotates relative to the rear rod 82 and axially slides downwards, so as to drive the vehicle-retracting tension spring 84 to stretch and accumulate potential energy. That is, the entire cart is automatically folded and folded by the process of accumulating potential energy by the retraction tension spring 84 and the retraction torsion spring 62.

Then, once the cart is unfolded, the cart folding tension spring 84 and the cart folding torsion spring 62 automatically push the cart to unfold while releasing potential energy, so that the cart can be folded and stood in one second by one key and unfolded once being thrown on the basis that a user does not bend over, and the operation purpose of automatically folding and unfolding the cart by one hand is perfectly achieved.

The above description is only an embodiment of the present invention, and it should be understood by those skilled in the art that any structural design equivalent to this embodiment is included in the scope of the present invention.

Claims

1. A single-hand automatic folding cart comprises a front foot pipe group (1), a rear foot pipe group (2), a handle pipe (3), a bent pipe (4), a stay bar (6), a folding bar (8), a seat pipe (5) and an armrest pipe (10); a rotary joint (9) which is coaxially hinged and a joint lock which is arranged in the rotary joint (9) are arranged between the upper end of the front foot pipe group (1), the upper end of the rear foot pipe group (2) and the lower end of the handle pipe (3); the lower end of the elbow (4) is rotationally connected with the upper end of the handle pipe (3), and a knob (43) and a secondary lock (41) for controlling the joint lock to be unlocked are arranged on the elbow (4); the upper end of the stay bar (6) is hinged with the lower end of the bent pipe (4), and a first hinge point (12) is arranged between the lower end of the stay bar (6) and the rear foot pipe group (2); the front end of the seat tube (5) is hinged on the front foot tube group (1), and the rear end is hinged on the support rod (6); the rear end of the handrail tube (10) is hinged on the handle tube (3); the folding rod (8) comprises a front rod (81) with the front end hinged to the front foot pipe group (1) and a rear rod (82) with the rear end hinged to the rear foot pipe group (2), a second hinge point (13) is arranged between the rear end of the front rod (81) and the front end of the rear rod (82), the folding rod (8) is further provided with a linkage rod (7) and a vehicle-collecting tension spring (84), the upper end of the linkage rod (7) is hinged to the handle pipe (3), the lower end of the linkage rod (7) is simultaneously connected to the rear rod (82) in a rotating and axial sliding mode, the upper end of the vehicle-collecting tension spring (84) is hooked to the second hinge point (13), and the lower end of the vehicle-collecting tension spring (84) is hooked to the lower end of the linkage rod (7); the first hinge point (12) is provided with a vehicle folding torsion spring (62), and two support legs of the vehicle folding torsion spring are respectively pushed on the support rod (6) and the rear foot tube group (2).

2. The single-hand automatic folding cart according to claim 1, wherein the axial sliding and rotating connection between the lower end of the linkage rod (7) and the rear rod (82) is that a sliding groove (821) extending along the axial direction is arranged on the rear rod (82), a sliding block (71) movably assembled in the sliding groove (821) is correspondingly arranged at the lower end of the linkage rod (7), and the lower end of the linkage rod (7) is slidably assembled in the sliding groove (821) of the rear rod through the sliding block (71) and is connected in a rotating manner at the same time.

3. The stroller of claim 1, wherein the first hinge point (12) is provided with a plastic sleeve (61) for mounting the retracting torsion spring (62).

4. A single-hand automatic folding cart according to claim 1, characterized in that said linkage rods (7) are S-shaped rods.

5. The single-hand automatic folding cart according to claim 1, wherein a rotation limiting plate (83) is disposed at the second hinge point (13).

6. A single-hand automatic folding cart according to claim 1, wherein said elbow (4) has a downwardly extending connecting section (42) at its lower end, and said brace (6) has its upper end hinged to said connecting section (42).

7. The single-hand automatic folding cart according to claim 1, wherein the cart is folded, the front foot tube set (1), the rear foot tube set (2) and the handle tube (3) are folded around the rotary joint (9), the bent tube (4) and the handle tube (10) are folded and attached to the handle tube (3), the stay bar (6) drives the seat tube (5) to fold and attach to the rear foot tube set (2) together, and then drives the two legs of the folding torsion spring (62) to move close to each other to accumulate potential energy; the front rod (81) and the rear rod (82) are mutually folded and attached to drive the second hinge point (13) to move downwards, the lower end of the linkage rod (7) rotates relative to the rear rod (82) and slides downwards in the axial direction at the same time, and then the vehicle folding tension spring (84) is driven to stretch and accumulate potential energy.