CN203283267U

CN203283267U - Foldable handcart

Info

Publication number: CN203283267U
Application number: CN2012206403229U
Authority: CN
Inventors: 李国斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-29
Filing date: 2012-11-29
Publication date: 2013-11-13
Anticipated expiration: 2022-11-29

Abstract

The utility model relates to a foldable handcart which comprises the following components: a pair of body rods, telescopic rods which are sleeved in the body rods, a hand which is connected with the telescopic rods, a transverse connecting handle which is connected with the body rods, a long shaft below the body shaft, truckles at two ends of the long shaft, and a pair of supporting beams. The foldable handcart is characterized in that: the two supporting beams are respectively hinged with the inside part at the lower part of the body rod at oblique upper part of the long shaft through a pin; the front end of each of the two supporting beams is connected with a short shaft; the short shaft is provided with a pair of auxiliary wheels; an underframe which is composed of two supporting beams, the short shaft and the auxiliary wheels can rotate around the pin; the underframe passes through an inner frame which is composed of the body rods and the transverse connecting handle; and the underframe is overturned from one side of the body rods to the other side of the body rods. The foldable handcart has the following advantages: simple structure, small volume after folding, easy carrying, strong carrying capability, and suitability for turning and opening in two directions before and behind the handcart body according to requirement.

Description

A kind of folding pushchair

Technical field

The utility model relates to the technical field of hand barrow, particularly the folding pushchair in collapsible minimizing space.

Background technology

At present, conventional folding pushchair has various design, its agent structure all is " L " shape, formed by vertical pull bar and horizontal holding the thing beam or hold the thing plate, carrier is placed on and holds on the thing plate, be force, the corner point of " L " shape is fulcrum and stress point, and the weight capacity of stress point is the key of car.But this key problem is not all resolved in existing design, has many shortcomings, as: bearing capacity is poor, complex structure, volume is large, weight is excessive, be not easy to carry.Hand barrow is on the market processed being designed with of stress point: triangular support, backplanes support.The stress point of the hand barrow of triangular support beyond pull bar, needs additional accessory.Do like this outward appearance bad, the processed complex difficulty is large, and volume and weight does not go under all subtracting, and mostly hand barrow is with the pipe that is easy to process on the market, but the support beam stress deformation that pipe is done is large, has a strong impact on load carrying ability; The hand barrow of backplanes support be rely on the monoblock moulding hold the thing plate, hold thing plate bottom and be fixed on the pull bar afterbody and make stress point, make fulcrum at the bottom of the afterbody that holds the thing plate withstands pull bar, holding the thing plate needs very large intensity and enough thickness, but supporting capacity is still limited, and weight is excessive.

The utility model content

The purpose of this utility model is the weak point that overcomes above-mentioned prior art, propose a kind of simple in structure, volume after folding is small and exquisite, be easy to carry about with one, folding pushchair that bearing capacity is strong, and support beam can be opened and used to former and later two directions upsets of car body.

the purpose of this utility model is achieved by the following technical solution: a kind of folding pushchair, include a pair of main body bar, be set in the expansion link in the main body bar, the handle of connection expansion link, the horizontal handle that connects that connects the main body bar, be located at the major axis of main body bar bottom, be loaded on the castor at major axis two ends, and a pair of support beam, it is characterized in that: two support beams are articulated in main body bar lower inside by bearing pin respectively, the oblique upper of major axis, the front end of two support beams is connected with minor axis, a pair of jockey pulley is installed on minor axis, by two support beams and minor axis, the underframe that jockey pulley forms can rotate around bearing pin, pass by main body bar and horizontal the company the inside casing that forms, by a lateral overturning of the main body bar opposite side to the main body bar.Further, support beam and bearing pin can be supported for by major axis suitable with support beam in the installation site of main body bar inboard, and namely support beam contacts with major axis while supporting, and become 90 degree right angles with the main body bar.The loads touching affects jockey pulley when avoiding using, and is movably installed with the jockey pulley cover plate on described a pair of jockey pulley.And described jockey pulley cover plate can be done to cover jockey pulley greater than 120 degree rotations around jockey pulley.Described main body bar, support beam, expansion link all adopt rectangular tube.

The structure that designs like this, because folding pushchair adopts the four-wheel structure, the support beam bearing pin is hinged, and support beam can overturn and be in the placement of main body bar both sides, and support beam is " L " structure while being supported on major axis, while only having two castors to land, can make push-and-pull vehicle and use.When support beam was put on the ground round about, castor, jockey pulley four-wheel landed, and can make trailer and use, and therefore made and the utlity model has following advantage:

1, can be folded into very little volume, length and highly all diminishing, the integral thickness after folding only exceeds several millimeters than castor, takes up room little; 2, main body bar, expansion link and support beam are all hollow structures, and accessory is few, and be lightweight; When 3, hand barrow was L-shaped, stress point was on major axis, and Stability Analysis of Structures is firm, and load-carrying capacity is apparently higher than similar hand barrow; 4, support beam reverse opening, four-wheel lands, and is fit to the use of different situations, and the user can free adjustment pull bar and carrier bar angle, and load-carrying capacity is apparently higher than similar hand barrow; 5, hand barrow can before and after bidirectional open, the user can be according to the needs push-pull fashion of choice for use quickly and easily of oneself; 6, the jockey pulley cover plate can rotate up and down, rotation direction top during use, and jockey pulley cover plate energy holding articles, do not allow object be pressed onto the impact of jockey pulley and use; 7, after folding, handle, near the horizontal handle that connects, is used hand directly grip and the horizontal handle that connects, and is easy to carry.

Description of drawings

Fig. 1 is that the utility model support beam is L-shaped, expansion link does not launch schematic diagram fully.

Fig. 2 is that the utility model support beam reverse flip, expansion link do not launch schematic diagram fully.

Fig. 3 is the schematic diagram of the fully folding collapse state of folding pushchair of the present utility model.

The specific embodiment

Referring to Fig. 1-Fig. 3, the hand barrow of the present embodiment includes a pair of main body bar 1, but be set in the flexible expansion link 2 of secondary in the main body bar, the handle 3 of connection expansion link, connect the horizontal of main body bar 1 and connect 4, be located at the major axis 5 of main body bar 1 bottom, be loaded on the castor 6 at major axis 5 two ends, a pair of support beam 7, the minor axis 8 of connection support beam 7 front ends, be loaded on two jockey pulleys 9 on minor axis 8, be movably installed with jockey pulley cover plate 10 on jockey pulley 9.The main body bar 1 of car body, expansion link 2, support beam 7 are made with the rectangular metal pipe, and two support beams 7 are articulated in respectively the oblique upper of lower 1 inboard of main body bar, major axis 5 by bearing pin 11.The underframe that is comprised of two support beams 7 and minor axis 8, jockey pulley 9 can rotate around bearing pin 11, passes by main body bar 1 and connects 4 inside casings that form with horizontal, by a lateral overturning of main body bar 1 opposite side to main body bar 1.

During folded state, as Fig. 3, secondary expansion link 2 pushes in main body bar 1, and the underframe that is comprised of two support beams 7 and minor axis 8, jockey pulley 9 can rotate around bearing pin 11, collapses in by main body bar 1 and connects in 4 inside casings that form with horizontal, and whole height is only than several millimeters of castor 6 height.

When the first is used state, as Fig. 1, support beam 7 turns over forward, routed up forward by the underframe that two support beams 7 and minor axis 8, jockey pulley 9 form, after launching fully, support beam 7 is supported by major axis 5, and the contact point between support beam 7 and major axis 5 becomes stress point, when to be support beam 7 supported by major axis 5, with the main body bar, spend right angle for 1 one-tenths 90.Jockey pulley 9 does not generally land, be fit to car load under this state and do backward the dilatory or push-and-pull of perk and use, in case and after jockey pulley 9 landed, support beam 7 disengaged with major axis 5, stress point is stressed is kept to zero.

When the second used state, as Fig. 2, support beam 7 turned over backward, by the underframe turning out backward that two support beams 7 and minor axis 8, jockey pulley 9 form, after launching fully, support beam 7 does not have any contact with major axis 5, jockey pulley 9 lands, and the stress point of support beam 7 is distributed on jockey pulley 9 and bearing pin 11.Under this state, castor 6 and jockey pulley 9 four-wheels land, and object is placed on support beam 7, and weight passes on major axis 5 by bearing pin 11, main body bar 1.Main body bar 1 can not be provoked support beam 7, main body bar 1 can free translation-angle, the load-carrying ability of support beam 7 is strong, several times while being the first state, jockey pulley cover plate 10 can be done greater than 120 degree rotations around jockey pulley 9, corresponding different use state all can forward to directly over jockey pulley 9 easily, avoids object to be pressed onto the wheel impact and uses, and this state lower body can pull the weight of more than 100 kilogram easily.

Certainly, expansion link also can be designed to multistage as required, also can additional cover plate on support beam, only enumerated some better embodiments here, and the protection category that other is equal to, structure roughly the same all should belong to this patent, repeat no more here.

Claims

1. folding pushchair, include a pair of main body bar, be set in the expansion link in the main body bar, the handle of connection expansion link, the horizontal handle that connects that connects the main body bar, be located at the major axis of main body bar bottom, be loaded on the castor at major axis two ends, and a pair of support beam, it is characterized in that: two support beams are articulated in main body bar lower inside by bearing pin respectively, the oblique upper of major axis, the front end of two support beams is connected with minor axis, a pair of jockey pulley is installed on minor axis, by two support beams and minor axis, the underframe that jockey pulley forms can rotate around bearing pin, pass by main body bar and horizontal the company the inside casing that forms, by a lateral overturning of the main body bar opposite side to the main body bar.

2. folding pushchair according to claim 1, while it is characterized in that support beam contacts with major axis, become 90 degree right angles with the main body bar.

3. folding pushchair according to claim 1 and 2, is characterized in that being movably installed with the jockey pulley cover plate on described a pair of jockey pulley.

4., according to claim or 3 described folding pushchairs, it is characterized in that described jockey pulley cover plate can, around the jockey pulley work greater than 120 degree rotations, cover jockey pulley.

5. folding pushchair according to claim 1 and 2, is characterized in that described main body bar, support beam, expansion link all adopt rectangular tube.