CN2925996Y

CN2925996Y - Collapsible handcart

Info

Publication number: CN2925996Y
Application number: CN 200620061786
Authority: CN
Inventors: 简世坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2007-07-25
Anticipated expiration: 2016-07-18

Abstract

The utility model discloses an automatic folding handcart with simple structure and reliable motion. The existing handcarts adopt gear as the linkage device, the linkage device of the utility model consists of a first matching section which is arranged on the upper end of the wheel frame cover and has a helical curved surface, and a second matching section which is fixed on the supporting bar and matched with the first matching section, the upper part of the wheel frame cover is supported on the fixing seat, and a driving section driving the driving wheel frame to rotate is set on the fixing seat. The driving section utilizes the a structure design on the fixing seat similar to a cam to rotate the wheel frame cover, automatic folding can be created by the common exertion of the first and second matching sections, the motion is a helical rotary motion, therefore the motion process is smooth, without jamming phenomenon, all the elements of the linkage device are all axially matched, different from the existing technology which gear transmission is the matching of two directions, and compared with the existing technology, the structure is simple, the assembly is convenient.

Description

A kind of hand barrow of amounting to

Technical field

The utility model relates to a kind of labour-saving half mechanical carrier equipment, particularly a kind of hand barrow of amounting to.

Technical background

At present on the airport, harbour, station or warehouse, when people need move heavier luggage or article, use hand barrow mostly, more convenient, laborsaving, so hand barrow must simplicity of design, make things convenient for and use and could be liked by the customer.My Chinese patent CN2570133Y " a kind of hand barrow " of being invented, as shown in Figure 1, its structure includes a main strut with connecting piece, and one is connected to the handlebar stem of connecting piece, and this handlebar stem can be made fore and aft motion with respect to main strut; At least be provided with an above runner, this rotaring wheeling sleeve is connected to the main strut bottom and sets firmly the wheel carrier of one first auxiliary section, and be articulated in the main strut bottom and set firmly one can with first auxiliary section carrier of second auxiliary section of assembly mutually.By assembly by first auxiliary section and second auxiliary section, wheel carrier and carrier are linked mutually, stir the wherein arbitrary part of wheel carrier or carrier, can make wheel carrier and carrier arrive the location simultaneously, by the action of gravity of bearing article, keep carrier and the open-shaped attitude of wheel carrier.Gear is all adopted in first auxiliary section and second auxiliary section of this hand barrow, and principal feature is to make things convenient for folding and use, but because gear transmission is the precision drive structure, occurs stuck phenomenon easily.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and what a kind of simple in structure, wheel carrier was provided amounts to more failure-free hand barrow of function automatically.

The technical scheme that realization the utility model can be amounted to hand barrow is: a kind of hand barrow of amounting to, comprise pole, be located at the handlebar stem of pole upper end, be set in the wheel carrier of pole bottom by the wheel carrier cover, and the carrier that is articulated in the pole lower end by the adapter shaft on the mount pad, wheel carrier is by linkage and carrier interlock, it is characterized in that: described linkage comprises first auxiliary section with spiral camber that is arranged on the wheel carrier set upper side, be installed in second auxiliary section that pole going up cooperates with described first auxiliary section, wheel carrier cover lower end is bearing on the mount pad, and mount pad is provided with and drives the drive part that wheel carrier rotates.

Specifically, described second auxiliary section is installed on the pole, the center of first auxiliary section and second auxiliary section is provided with the spring cavity concentric with pole, be provided with the compression spring that is sleeved on the pole in the spring cavity, the upper end fastening of spring is in the spring cavity bottom of first auxiliary section, and the lower end of spring withstands on the spring cavity bottom surface of second auxiliary section.Described drive part is two supporting arms that be arranged in parallel on the mount pad, be installed on the supporting arm adapter shaft center to supporting arm end face and adapter shaft center to the difference of the distance in supporting arm front greater than 0.

The front of described supporting arm and the junction of end face are arc-shaped protrusions, and described arc-shaped protrusions is close to the lower surface of wheel carrier cover when carrier rotates.Such structure design, make carrier in the process of folding, effect by spring, the opposite face of mount pad and wheel carrier cover remains fit-state, when carrier folds,, be equivalent to wheel carrier and be with a downward displacement because there is range difference in adapter shaft center to supporting arm end face and supporting arm front, the wheel carrier cover just can rotate at the spiral sloping portion between first auxiliary section and second auxiliary section so, thereby makes wheel carrier fold automatically.

Automatically fold the more steady and easy realization of motion for wheel carrier is got, the spiral camber on described first auxiliary section and second auxiliary section is circumference rectangular distribution 2 to 4 places on their opposite face, and the projection of described spiral camber on periphery all joins end to end.And the adapter shaft center is suitable at the height of 90 ° of angle range inside spin curved surfaces to the difference and first mating part of the distance in supporting arm front to supporting arm end face and adapter shaft center.

As further improvement of the utility model, described wheel carrier cover bottom is provided with circular flange, and described flange bearing is on two supporting arms.In order to guarantee the durability of automatic folding mechanism, this flange can adopt the abrasion resistant material to make.

Further improve as of the present utility model, described wheel carrier is when opening, be provided with locating piece over against the position of mount pad two supporting arm intermediate gaps.When wheel carrier was in full open position, this locating piece prevented that wheel carrier from swinging, and played position-limiting action.

In addition, be set with the sliding sleeve of captiveing joint on the described pole with handlebar stem.Make pole and handlebar stem realize that telescopic sliding type is connected.

In sum, the beneficial effects of the utility model are, driving action by mount pad, make the wheel carrier cover realize rotatablely moving, under the combined action of spring and first and second mating part, realize amounting to automatically, its motion is that a kind of spiral rotatablely moves, so motion process is smooth and easy, catching phenomenon can not appear, and the parts of its linkage all are axial cooperations, and the gear transmission that is different from available technology adopting is the matching relationship of both direction, with respect to prior art, simple in structure, easy to assembly.

Description of drawings

The hand barrow that can amount to the utility model below in conjunction with drawings and the specific embodiments is described further.

Accompanying drawing 1 is the hand barrow the amounted to block diagram of prior art;

Accompanying drawing 2 can be amounted to the hand barrow block diagram for the utility model;

Accompanying drawing 3 is a lateral plan among Fig. 2;

Accompanying drawing 4 is amounted to block diagram in the process for wheel carrier among Fig. 2;

Accompanying drawing 5 is the axonometric drawing of Fig. 2;

Accompanying drawing 6 is the other direction block diagram of Fig. 2;

The block diagram that accompanying drawing 7 is amounted to for wheel carrier among Fig. 2;

Accompanying drawing 8 is the back view of Fig. 6.

Among the figure, 1, pole 11, second auxiliary section 111, tightening screw 2, handlebar stem 3, wheel carrier cover 31, first auxiliary section 32, spring cavity 33, flange 4, wheel carrier 5, mount pad 51, adapter shaft 52, supporting arm 521, end face 522, positive 53, groove 54, projection 7, spring 8, carrier 9, locating piece 10, sliding sleeve.

The specific embodiment

Shown in accompanying

drawing

2,3,5, the hand barrow of amounting to of the present utility model comprises pole 1, handlebar stem 2, wheel frame system 4 and carrier 8, and handlebar stem 2 is realized telescopic function by sliding sleeve 10 and pole 1 sliding block joint.In pole 1 lower end, second auxiliary section 11 is sleeved on pole 1 bottom, and is fixed on the pole 1 by screw 111, also can directly be made on the pole 1.Wheel carrier 4 and wheel carrier overlap 3 captives joint and is integral, and the front end of wheel carrier 4 flexibly connects by bearing pin and runner becomes the wheel frame system.The upper end of wheel carrier cover 3 is provided with first auxiliary section 31, and its center is provided with spring cavity 31a with the level, wheel carrier cover 3 is sleeved on the below of last second auxiliary section 11 of pole.The opposite face of first auxiliary section 31 and second auxiliary section 11 is provided with the spiral camber that cooperatively interacts.These spiral cambers are along circumferencial direction rectangular distribution 3 places of opposing end surface, and the projection on periphery all joins end to end, and also are that the angle that each spiral camber plays to terminal is 120 °.Certainly, also can be designed to 2 places or 4 places as required, surpass 4 places, be difficult to realize the purpose of 90 ° of disposable automatic rotations.The center of second auxiliary section 11 also is provided with the spring cavity (not shown) concentric with pole 1, be provided with compression spring 7 in the spring cavity, spring 7 is sleeved on the pole 1, the upper end fastening of spring 7 is in the spring cavity bottom of first auxiliary section 11, and the lower end of spring 7 withstands on the spring cavity 31a bottom surface of second auxiliary section 31.Bottom at wheel carrier cover 3 is provided with circular flange 54, and this flange 54 can adopt the abrasion resistant material to make.In the bottom of wheel carrier 4, also be provided with the wedge locating block 9 that a location wheel carrier is used.The rear end of carrier 8 is provided with two mount pads 5, and mount pad 5 is made up of the supporting arm 52 of the left and right sides and the connecting panel at rear portion, is provided with the groove 53 that matches with locating piece 9 on connecting panel.When carrier is installed, that the hole that adapter shaft 51 passes on supporting arm 52 and the pole 1 is hinged with both.Adapter shaft 51 also can adopt the screw and nut of band polished rod to replace.Because spring 7 has application force on wheel carrier cover 3, so the flange 33 that wheel carrier overlaps 3 lower ends is bearing on two supporting arms 52 of mount pad 5 all the time.And, when wheel carrier is opened, the groove 53 of locating piece 9 on the mount pad 5 rear portion connecting panels, the shape and size with locating piece 9 of this groove 53 are suitable.Like this, when wheel carrier was in full open position, this locating piece prevented that wheel carrier from swinging, and played position-limiting action (as shown in Figure 6).

Shown in accompanying

drawing

4,5, in the front 522 of supporting arm and the junction of end face 521, be provided with the projection 54 of circular arc, adapter shaft 51 centers are to the distance of supporting arm end face 521 distance greater than adapter shaft 51 centers to supporting arm front 522, and this range difference is suitable at the height that 90 ° of angle range inside spins descend with first auxiliary section.Wherein the distance at the top of projection 54 to adapter shaft 51 centers is slightly larger than the distance of adapter shaft center 51 to supporting arm end face 521, its effect is, when carrier is amounted to, these projection 54 first preloading springs 7, after carrier turns over

projection

54,7 pairs of wheel carrier covers 3 of spring produce a bigger downward momentum, make wheel carrier cover 3 do rotatablely moving under the screw under the combined action of first and second auxiliary section, thereby amount to automatically.

Shown in accompanying

drawing

4,7,8, when carrier was amounted to, locating piece began to break away from groove, spring applies downward power to the wheel carrier cover, first auxiliary section of wheel carrier cover descends and rotation along helical surface under the effect of second auxiliary section, and automatic drawing back is to the state shown in accompanying drawing 7,8.Equally, when carrier when folded position is opened because mount pad applies application force upwards to the wheel carrier cover, first auxiliary section of wheel carrier cover is stretched on helical surface and is rotated under the effect of second auxiliary section, makes wheel carrier open to as shown in Figure 2 state automatically.

The beneficial effects of the utility model are, by the driving effect of mount pad, the wheel carrier cover are realized Rotatablely move, under the acting in conjunction of spring and first and second mating part, realize automatic folding, it Motion is a kind of spiral rotating motion, so motion process is smooth and easy, catching phenomenon can not occur, and The parts of its linkage all are axial cooperations, and the gear drive that is different from available technology adopting is The matching relationship of both direction, simple in structure with respect to prior art, easy to assembly.

Claims

1. the hand barrow that can amount to, comprise pole (1), be located at the handlebar stem (2) of pole (1) upper end, be set in the wheel carrier (4) of pole (1) bottom by wheel carrier cover (3), and the carrier (8) that is articulated in pole (1) lower end by the adapter shaft (51) on the mount pad (5), wheel carrier (4) is by linkage and carrier (8) interlock, it is characterized in that: described linkage comprises first auxiliary section (31) with spiral camber that is arranged on wheel carrier cover (3) upper end, be installed in second auxiliary section (11) that pole (1) going up cooperates with described first auxiliary section (31), wheel carrier cover (3) lower end is bearing on the mount pad (5), and mount pad (5) is provided with and drives the drive part (A) that wheel carrier rotates.

2. the hand barrow of amounting to according to claim 1, it is characterized in that: described second auxiliary section (11) is installed on the pole (1), first auxiliary section (31) is provided with the spring cavity (32) concentric with pole (1) with the center of second auxiliary section (11), be provided with the compression spring (7) that is sleeved on the pole in the spring cavity, the upper end fastening of spring is in the spring cavity bottom of first auxiliary section, and the lower end of spring withstands on the spring cavity bottom surface of second auxiliary section.

3. the hand barrow of amounting to according to claim 2, it is characterized in that: the supporting arm (52) that described drive part (A) be arranged in parallel for mount pad (5) last two, be installed on the supporting arm (52) adapter shaft (51) center to supporting arm end face (521) and adapter shaft center to the difference of the distance of supporting arm front (522) greater than 0.

4. the hand barrow of amounting to according to claim 3 is characterized in that: the front of described supporting arm (522) are arc-shaped protrusions (54) with the junction of end face (521), and described arc-shaped protrusions (54) is close to the lower surface of wheel carrier cover when carrier rotates.

5. the hand barrow of amounting to according to claim 4, it is characterized in that: spiral camber circumference rectangular distribution 2 to 4 places on their opposite face on described first auxiliary section (31) and second auxiliary section, the projection of described spiral camber on periphery all joins end to end.

6. the hand barrow of amounting to according to claim 3 is characterized in that: described adapter shaft center is suitable at the height of 90 ° of angle range inside spin curved surfaces to the difference and first auxiliary section of the distance in supporting arm front to supporting arm end face and adapter shaft center.

7. the hand barrow of amounting to according to claim 4 is characterized in that: described wheel carrier cover bottom is provided with circular flange (33), and described flange bearing is on two supporting arms.

8. according to each described hand barrow of amounting to of claim 1 to 7, it is characterized in that: described wheel carrier is when opening, be provided with locating piece (9) over against the position of mount pad two supporting arm intermediate gaps.

9. the hand barrow of amounting to according to claim 8 is characterized in that: be provided with the groove (53) that matches with this locating piece geomery with the cooresponding position of locating piece (9) on the described mount pad.

10. the hand barrow of amounting to according to claim 9 is characterized in that: be set with the sliding sleeve (10) of captiveing joint with handlebar stem (2) on the described pole (1).