Gathering type folding trolley

Abstract

The utility model belongs to the technical field of trolleys, and particularly relates to a gathering type folding trolley. A gathering type folding trolley comprises a main rod and wheels fixed to the lower portion of the main rod. The sliding sleeve is arranged on the main rod in a sleeving and sliding fit mode; the first hinge assembly comprises a fork-shaped first hinge rod, and the two ends of the first hinge rod are hinged to the sliding sleeve and the main rod respectively; the second hinge assembly comprises a central seat and a second hinge rod hinged between the central seat and the main rod; the third hinge assembly comprises long rods and short rods, one ends of the long rods and one ends of the short rods are hinged to the sliding sleeves respectively, the other ends of the two long rods are hinged to each other, rod bodies of the long rods are further hinged to the adjacent second hinge rods, and the other ends of the two short rods are hinged to the adjacent second hinge rods respectively. The utility model has the advantages that the hinge structure is more concise and the weight is lighter.

Description

TECHNICAL FIELD

[0001] The utility model belongs to handcart technical field, especially relate to a gather type folding handcart. BACKGROUND

[0002] Folding car is the commonly used load tool of people, usually is used in carrying goods, going out camping etc. In traditional technology, folding car mostly adopts flat folding type structure, lead to folding car can only be folded in length direction, can't be folded in width direction, still has big volume after folding, is inconvenient to store.

[0003] The Chinese patent with the application number 201920689093.1 discloses a folding car, which realizes folding through gathering, and the patent can realize folding of the handcart in length direction and width direction to reduce the overall volume. However, the folding of the length direction of the handcart of the above patent depends on the hinge linkage of the bottom cross support, the bottom cross pipe, the side length cross pipe, the side break link, the connecting hinge and the vertical link. Since the faults of the folding car are mostly concentrated in the hinge part, too many hinge designs not only reduce the overall service life, but also increase the weight of the car body due to too many hinge parts, so that the carrying is not convenient. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the prior art, a gather type folding handcart with a more simple hinge structure and lighter weight is provided.

[0005] The utility model adopts the following technical scheme to be realized: a gather type folding handcart, comprising:

[0006] The main rod is four in number and is distributed in a square shape.

[0007] The wheel is fixed below the main rod.

[0008] The sliding sleeve is sleeved and slidably fitted on the main rod.

[0009] The first hinge assembly is arranged between the two main rods in the adjacent width direction, and the first hinge assembly comprises a first hinge rod in the shape of a fork, and the two ends of the first hinge rod are respectively hinged to the sliding sleeve and the main rod.

[0010] The second hinge assembly is arranged between the four main rods, and comprises a center seat and four second hinge rods, and the two ends of the second hinge rod are respectively hinged to the center seat and the main rod.

[0011] The third hinge assembly comprises two long rods and two short rods arranged diagonally, one end of the long rod and the short rod is respectively hinged to the sliding sleeve, the other end of the two long rods is hinged to each other, and the rod body of the long rod is also hinged to the adjacent second hinge rod, and the other end of the two short rods is respectively hinged to the adjacent second hinge rod.

[0012] In use, the user can lift the central seat upward so that the central seat is lifted upward, at this time the second hinged rod drives the main rod to gather to the center side, and the second hinged rod also drives the long rod and the short rod to rotate, so that the sliding sleeve is lifted, the lifting of the sliding sleeve drives the first hinged assembly to rotate, so that the entire trolley is folded synchronously in the length direction and the width direction.

[0013] The cooperation of the central seat, the second hinged rod, the long rod and the short rod can realize the folding and unfolding of the trolley in the length direction. The diagonal arrangement of the two long rods can ensure the synchronization of the folding and unfolding of the trolley in the length direction. Since the two main rods in the width direction are connected through the first hinged assembly, as long as one pair of diagonal main rods is synchronous, the other pair of diagonal main rods will also be synchronous, so the other pair of diagonal short rods can be arranged, and the two ends of the short rod are hinged with the second hinged rod and the sliding sleeve, so that the structure is more simple and the overall weight of the trolley is reduced. The first hinged assembly in the present application is also relatively simple, and the adjacent two main rods in the width direction can be synchronously unfolded or folded through the first hinged rod in the shape of a fork. In summary, the present application has fewer hinged components, reduces the failure rate, reduces the weight of the trolley, and is convenient for users to carry.

[0014] Preferably, the length of the second hinged rod is the same as that of the long rod, and the length of the short rod is half of the length of the long rod.

[0015] The above arrangement can ensure the smoothness of the hinged structure during rotation.

[0016] Preferably, the hinged connection between the second hinged rod and the long rod is located at the center of the second hinged rod, and the hinged connection between the short rod and the second hinged rod is located at the center of the second hinged rod.

[0017] The above arrangement can ensure the smoothness of the hinged structure during rotation.

[0018] Preferably, the main rod is fixed with a hinged fixed seat hinged with the first hinged rod and the second hinged rod, and the hinged fixed seat is located below the sliding sleeve.

[0019] Preferably, when the trolley is in an unfolded state, the sliding sleeve abuts against the hinged fixed seat below to limit the limit position of the descent of the central seat.

[0020] The second hinged rod is hinged with the long rod, the long rod is hinged with the sliding sleeve, and the abutment of the sliding sleeve with the hinged fixed seat below makes the long rod unable to continue to rotate, thereby limiting the central seat to avoid excessive descent of the central seat and cause jamming.

[0021] As a preferred, the front end or the rear end of the stroller is provided with a pull rod, the pull rod comprises a handle, a rod body, a connecting seat and two side rods, the hinged fixing seat of the front end or the rear end of the stroller is rotationally connected with a rotating piece which can rotate in the front and rear directions, one end of the side rod is hinged with the rotating piece, and the other end is hinged with the connecting seat; the handle is fixed on the rod body, the rod body passes through the connecting seat, and a limiting assembly which limits the position of the rod body is arranged between the rod body and the connecting seat.

[0022] The rotating piece can realize that the pull rod can rotate in the front and rear directions, increase the flexibility of the pull rod, and the two ends of the side rod are respectively hinged with the rotating piece and the connecting seat to adapt to the gathering or unfolding of the stroller. The rod body passes through the connecting seat, and the rod body and the connecting seat are limited by the limiting assembly, so that the rod body can be stretched and contracted compared with the connecting seat, and after stretching and contracting, the rod body is fixed by the limiting assembly. After the rod body is contracted, the stroller can be conveniently stored. The limiting assembly can adopt any existing clamping mode, such as the cooperation of a pin shaft and a plug hole, the cooperation of a buckle and a buckle hole, the cooperation of a screw and a screw hole, etc.

[0023] As a preferred, the limiting assembly comprises a first pin shaft which is arranged on the rod body and can be elastically stretched and contracted, and the connecting seat is provided with a plug hole or a slot which is inserted with the first pin shaft, when the first pin shaft is inserted into the plug hole or located in the slot, the connecting seat can limit the stretching and contracting movement of the rod body; the connecting seat is provided with a button; when the button is pressed, the first pin shaft is contracted to make the first pin shaft out of the limiting state of the plug hole or the slot, at this time, the rod body can be stretched and contracted.

[0024] The stretching and contracting of the rod body is limited by the abutment of the plug hole or the slot and the first pin shaft, and the first pin shaft is pressed and contracted by the button, so that the first pin shaft can be withdrawn from the plug hole or the slot, so that the rod body can be stretched and contracted compared with the connecting seat, so as to realize the storage of the pull rod.

[0025] As a preferred, the connecting seat is provided with a through hole through which the rod body passes, and the connecting seat is provided with a guide inclined surface which guides the first pin shaft at the opening of the lower end of the through hole, when the rod body is stretched upward, the guide inclined surface contacts the first pin shaft to make the first pin shaft gradually retract to enter the plug hole or the slot; the bottom of the rod body is provided with a limiting table which extends outward in the circumferential direction, and the limiting table abuts against the bottom of the connecting seat when the first pin shaft enters the plug hole or the slot.

[0026] The guide inclined surface can make the rod body be limited by the limiting assembly only by stretching upward, the guide inclined surface guides the first pin shaft to make the first pin shaft gradually retract and enter the plug hole or the slot, which is more convenient; at the same time, the abutment of the limiting table and the bottom of the connecting seat can limit the rod body from continuing to stretch upward.

[0027] As preferred, the rod body comprises a main rod body and a secondary rod body, the main rod body is sleeved outside the secondary rod body to be sleeved and matched with each other, the secondary rod body is provided with a second pin shaft which can be elastically extended and contracted, and the main rod body is provided with a matching hole through which the second pin shaft passes.

[0028] By arranging the main rod body and the secondary rod body, the length of the whole rod body can be prolonged, and meanwhile, when the pull rod is not used, the second pin shaft can be pressed to make the secondary rod body retract into the main rod body, so as to facilitate the storage of the trolley.

[0029] As preferred, the trolley is fixed with a canopy, the vertical edges of the four corners of the canopy are respectively fixed with the four main rods, the bottom outer side of the canopy is provided with a stay which is sleeved on the center seat, and the bottom inner side of the canopy is provided with a handle which corresponds to the stay.

[0030] By pulling the handle, the stay can be lifted to lift the center seat, so as to facilitate the folding of the trolley.

[0031] Compared with the prior art, the hinge structure is more simple, the failure rate is reduced, the weight of the trolley is reduced, and the user is facilitated to carry. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structure schematic view when the trolley is unfolded;

[0033] Figure 2 It is a structure schematic view when the trolley is half folded;

[0034] Figure 3 It is a structure schematic view when the trolley is fully folded;

[0035] Figure 4 It is a structure schematic view of the pull rod;

[0036] Figure 5 It is a structure schematic view of the trolley with a canopy.

[0037] Fig. 1 is a main rod; Fig. 11 is a sliding sleeve; Fig. 12 is a hinge fixing seat; Fig. 2 is a wheel; Fig. 3 is a first hinge rod; Fig. 4 is a center seat; Fig. 41 is a second hinge rod; Fig. 51 is a long rod; Fig. 52 is a short rod; Fig. 6 is a pull rod; Fig. 61 is a rotating piece; Fig. 62 is a side rod; Fig. 7 is a handle; Fig. 8 is a rod body; Fig. 81 is a main rod body; Fig. 811 is a first pin shaft; Fig. 812 is a limiting table; Fig. 82 is a secondary rod body; Fig. 821 is a second pin shaft; Fig. 9 is a connecting seat; Fig. 91 is a button; Fig. 92 is a slot; Fig. 93 is a guide inclined surface; Fig. 100 is a canopy; and Fig. 200 is a stay. DETAILED DESCRIPTION

[0038] The utility model will be further described below according to the drawings and specific embodiments.

[0039] AsFigures 1 to 3 As shown in the drawings, the embodiment discloses a folding handcart, which comprises four main rods 1 arranged in a rectangular shape, the main rods 1 extend in a vertical direction, the bottom of the main rods 1 is fixed with wheels 2, and the main rods 1 are provided with a hinged fixing seat 12 and a sliding sleeve 11. The hinged fixing seat 12 is fixed at the lower end of the main rod 1, and the sliding sleeve 11 is sleeved on the main rod 1 and can slide in the vertical direction of the main rod 1. A first hinged assembly is arranged between two adjacent (adjacent in the width direction) main rods 1, and the first hinged assembly comprises two first hinged rods 3 in a fork shape, and the two ends of the first hinged rod 3 are hinged with the sliding sleeve 11 and the hinged fixing seat 12 of the main rod 1 respectively.

[0040] A second hinged assembly and a third hinged assembly are arranged between the four main rods 1, the second hinged assembly comprises a center seat 4 and four second hinged rods 41, and the two ends of the second hinged rod 41 are hinged with the center seat 4 and the hinged fixing seat 12 respectively. The third hinged assembly comprises two long rods 51 and two short rods 52 arranged in a diagonal manner, one end of the long rod 51 and the short rod 52 is hinged with the sliding sleeve 11, the other end of the two long rods 51 is hinged with each other, and the rod body of the long rod 51 is further hinged with the adjacent second hinged rod 41, and the other end of the two short rods 52 is hinged with the adjacent second hinged rod 41 respectively. The length of the second hinged rod 41 is the same as that of the long rod 51, the length of the short rod 52 is half of that of the long rod 51, the hinged positions of the second hinged rod 41 and the long rod 51 are both located at the centers of the two, and the hinged position of the short rod 52 and the second hinged rod 41 is the center of the second hinged rod 41.

[0041] As shown in the drawings, Figure 1 and Figure 4 The front end of the handcart is provided with a pull rod 6, the pull rod 6 comprises a handle 7, a rod body 8, a connecting seat 9 and two side rods 62. The two hinged fixing seats 12 at the front end of the handcart are rotationally connected with a rotating piece 61, the rotating piece 61 can rotate in the front-rear direction of the handcart, one end of the side rod 62 is hinged with the rotating piece 61, and the other end is hinged with the connecting seat 9; the handle 7 is fixed at the top of the rod body 8, and the connecting seat 9 is provided with a through hole for the rod body 8 to pass through.

[0042] The rod body 8 comprises a main rod body 81 and a sub rod body 82, the lower end of the main rod body 81 is provided with a first pin shaft 811 which is elastically retractable through a spring. The connecting seat 9 is also provided with a slot 92 matched with the first pin shaft 811 and a button 91 located at the side of the slot 92. The bottom of the main rod body 81 is also provided with a limiting platform 812 extending outward in the circumferential direction, when the first pin shaft 811 is inserted into the slot 92, the limiting platform 812 will abut against the lower end of the connecting seat 9, so that the main rod body 81 cannot move upward, at the same time, the first pin shaft 811 located in the slot 92 makes the main rod body 81 unable to move downward, so as to achieve the purpose of limiting the position of the main rod body 81. The bottom of the connecting seat 9 is also provided with a guide inclined surface 93 at the opening, when the main rod body 81 slides upward, the guide inclined surface 93 will abut against the first pin shaft 811, so that the first pin shaft 811 gradually retracts to enter the slot 92. In some other embodiments, the slot 92 can also be replaced by a hole.

[0043] The sub rod body 82 is arranged on the upper side of the main rod body 81, and the main rod body 81 is hollowly arranged and sleeved outside the sub rod body 82, the lower end of the sub rod body 82 is provided with a second pin shaft 821 which is elastically retractable, the second pin shaft 821 is also elastically retractable through a spring, the upper end of the main rod body 81 is provided with a matching hole through which the second pin shaft 821 passes, when the second pin shaft 821 passes through the matching hole, the positions of the main rod body 81 and the sub rod body 82 are fixed.

[0044] When the trolley needs to be folded, the second pin shaft 821 is pressed to make the sub rod body 82 disengage from the limiting state, the sub rod body 82 can be pressed into the main rod body 81, then the button 91 is pressed to make the main rod body 81 disengage from the limiting state of the connecting seat 9, the main rod body 81 can be pressed to make the main rod body 81 descend.

[0045] As shown in Figure 5 The trolley is also fixed with a canopy 100, the vertical edges on the four corners of the canopy 100 are respectively fixed with the four main rods 1, the canopy 100 has a pull strip 200 on the bottom outer side, the pull strip 200 is sleeved on the center seat 4, a handle is also arranged at the inner bottom center of the canopy 100 (not shown in the figure), the handle is located above the pull strip 200, pulling the handle of the canopy 100 can make the canopy 100 drive the center seat 4 to gather upward, so as to realize the folding of the whole trolley.

Claims

1. A concertina folding trolley characterised in that, The utility model provides a kind of handcart, including: Main rod, four in number and in square shape distribution; Wheel, which is fixed below main rod; Slip sleeve, which is sleeved and matched on main rod; First hinged component, which is arranged between two main rods in adjacent width direction, first hinged component includes fork type first hinged rod, both ends of first hinged rod are hinged slip sleeve and main rod respectively; Second hinged component, which is arranged between four main rods, including center seat and four second hinged rods, both ends of second hinged rod are hinged center seat and main rod respectively;And Third hinged component, which includes two long rods and two short rods arranged diagonally, one end of long rod and short rod is hinged with slip sleeve respectively, the other end of two long rods is hinged with each other and the rod body of long rod is also hinged with adjacent second hinged rod, the other end of two short rods is hinged with adjacent second hinged rod respectively.

2. The converging folding stroller of claim 1, wherein: The length of second hinged rod and long rod is same, the length of short rod is half of long rod.

3. The converging folding stroller of claim 2, wherein: The hinge of second hinged rod and long rod is located at the center of both, and the hinge of short rod and second hinged rod is at the center of second hinged rod.

4. The converging folding stroller of claim 1, wherein: Hinged fixed seat, which is hinged with first hinged rod and second hinged rod, is fixed on main rod, and hinged fixed seat is located below slip sleeve.

5. The converging folding stroller of claim 4, wherein: When handcart is in unfolded state, slip sleeve abuts against lower hinged fixed seat to limit the limit position of center seat descending.

6. The converging folding stroller according to any one of claims 1-5, wherein: The front end or rear end of handcart is provided with pull rod, which includes handle, rod body, connecting seat and two side rods, the hinged fixed seat of front end or rear end of handcart is rotationally connected with rotating part which can rotate in front-back direction, one end of side rod is hinged with rotating part, and the other end is hinged with connecting seat;Handle is fixed on rod body, and rod body passes through connecting seat, and limiting component which limits the position of rod body is arranged between them.

7. The converging folding stroller of claim 6, wherein: The limiting component includes first pin shaft which is arranged on rod body and can be elastically extended and retracted, and the insertion hole or slot which is inserted with first pin shaft is arranged on connecting seat, when first pin shaft is inserted into insertion hole or located in slot, connecting seat can limit the extension and retraction of rod body;Button is arranged on connecting seat;When button is pressed, first pin shaft is retracted to make first pin shaft out of limiting state of insertion hole or slot, and at this time, rod body can be extended and retracted.

8. The converging folding stroller of claim 7, wherein: Connecting seat is provided with through hole for rod body to pass through, and connecting seat is provided with guide slope which guides first pin shaft at the opening of through hole lower end, when rod body is extended upwards, guide slope contacts with first pin shaft to make first pin shaft gradually retract to enter insertion hole or slot;The bottom of rod body is provided with limiting platform which extends outward in circumferential direction, when first pin shaft enters insertion hole or slot, limiting platform abuts against the bottom of connecting seat.

9. The converging folding stroller of claim 6, wherein: The rod body includes main rod body and auxiliary rod body, the main rod body is sleeved outside the auxiliary rod body to make them sleeve joint, the auxiliary rod body is provided with second pin shaft which can be elastically extended and retracted, and the main rod body is provided with matching hole for second pin shaft to pass through.

10. The concertinaed folding stroller of any one of claims 1-5, wherein: The handcart is fixed with awning cloth, the vertical edges of four corners of awning cloth are fixed with four main rods respectively, the bottom outside of awning cloth is provided with stay which is sleeved on center seat, and the bottom inside of awning cloth is provided with handle which corresponds with stay.

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