CN202186404U

CN202186404U - Foldable luggage cart

Info

Publication number: CN202186404U
Application number: CN2011202048204U
Authority: CN
Inventors: 黄怀高
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-04-11
Anticipated expiration: 2021-06-16

Abstract

The utility model discloses a foldable luggage cart, which comprises a cart frame, a bearing bottom plate and a wheel support. A wheel vertical stroke control piece fixedly connected with the bearing bottom plate is arranged on one side of the bearing bottom plate connected with the cart frame. When the bearing bottom plate is unfolded, the wheel vertical stroke control piece abuts against a second annular groove arranged on the wheel support, and wheels are guided to vertically move upwards and perform external rotation and folding under the combined action of a first spiral guiding surface arranged on a first annular groove of the cart frame and a second spiral guiding surface arranged on the second annular groove; and when the bearing bottom plate is folded, the wheels perform internal rotation returning and vertically move downwards simultaneously under the action of a rotating torsion return spring. The edges of the folded wheels protrude out of the bottom edges of the folded bearing bottom plate. When the wheels are folded, the wheels protrude out of the bottom contour of a bearing support at a certain distance, thereby achieving the fact that a cart body utilizes the wheels to walk after folding. In addition, when the wheels are unfolded, the wheels move upwards to be flush with the bottom of the whole unfolded cart body, thereby enabling the wheels to further support the cart frame from the rear side of the cart frame.

Description

A kind of foldable luggage trolley

Technical field

The utility model relates to a kind of manual transportation means, particularly a kind of folding manual baggage car.

Background technology

Manual, the folding two-wheeled baggage car that uses in the prior art at present; Comprise vehicle frame, weight tray and wheel; Wherein be that front and back 90 degree are collapsible between weight tray and the vehicle frame, two wheels socket-connect through wheel stand and vehicle frame, and mutual centering folds and parallels with vehicle frame between the wheel; Wheel serves as axle 90 degree Unscrews with the bar that constitutes vehicle frame, and wheel and vehicle frame after opening are perpendicular.The shortcoming of prior art is that the edge of weight tray connection vehicle frame one side has the flange that stops luggage to slide; Wheel after folding is positioned on the flange and with weight tray to press close to mutually; This makes baggage car after folding, can not rely on the wheel walking and can only begin a new line, causes bigger burden; In addition, open fully and during vertical bearing luggage,, can't further support be provided, under luggage's center of gravity height and bevelled situation, be prone to cause the sagittal of car body to topple vehicle frame because wheel is higher than weight tray at weight tray, the relative vehicle frame of wheel.

The utility model content

The utility model is in order to overcome defective in the above-mentioned prior art, can to realize that car body utilizes the wheel walking after folding, launch the back at car body simultaneously and form the support of wheel to the vehicle frame rear side, the possibility of toppling before and after the car body in the time of can reducing vertical pendulum clearance Lee.

For realizing above-mentioned purpose; The utility model provides a kind of foldable luggage trolley; Comprise: vehicle frame, be provided with for flexible, its underpart is provided with the cylindrical pull bar that is hinged with the baggage car weight tray; Said cylindrical pull bar top is provided with first circular groove, 25, the first circular grooves, 25 lower surfaces and is provided with the first spiral-guide face 26; Weight tray, fit with said vehicle frame in its folding back, and it launches be provided with vertical with vehicle frame of back, is used to carry luggage, and the weight tray side that connects to ground is provided with the vertical Stroke Control part of the wheel of captiveing joint with said weight tray; Wheel stand; It has second circular groove 31 with the adaptive socket of said cylindrical pull bar; Second circular groove, 31 upper surfaces are provided with and the said first spiral-guide face, the 26 suitable second spiral-guide face, 32, the second circular grooves, the 31 internal fixation rotary torsion retracing spring of taking a seat;

Pull bar vertically is arranged in second circular groove 31, and the shaft hole sleeve of pull bar bottom is connected in the axle 14 of the vertical Stroke Control part of wheel; When weight tray launches; The vertical Stroke Control part of wheel forms pushing tow to second circular groove (31); Move on vertically and launch at guiding wheel under the combined action of the first spiral-guide face 26 and the second spiral-guide face 32 to the both sides outward turning; When weight tray folded, wheel inward turning under the effect of rotary torsion retracing spring reclaimed and vertically moves down simultaneously; Vehicle wheel after folding edge at the bottom of the weight tray that protrudes in after folding.

Preferably, the vertical Stroke Control part of wheel is the caulking groove structure that three gussets constitute; Axle 14 is located on two gussets that the caulking groove structure is parallel to each other; The caulking groove structure has towards the place ahead of weight tray free end side breach and the top breach vertical with said the place ahead breach, and the place ahead breach is that arc transition is connected with the top breach; In the weight tray expansion process, second circular groove 31 from the place ahead indentation, there cross the arc transition position and arrive the top indentation, there.

Preferably, the distance at axle 14 and breach edge, top is greater than the distance of axle 14 with breach edge, the place ahead, and the difference of the size of two distances is the vertical stroke of said wheel in the outward turning expansion process.

Preferably, the weight tray side that connects to ground also is provided with the flange that prevents baggage slide, and flange is provided with the vehicle wheel that allows after the folding otch 131 along the said flange of protrusion.

Preferably, the bottom of second circular groove 31, be provided with pad with the junction of caulking groove structure.

Preferably, connect and go up big, following little trapezoidal cut before and after being provided with on the back gusset of caulking groove, the corresponding position of wheel stand is provided with the fixed block 33 suitable with trapezoidal cut, and wheel launches back fixed block 33 and embeds in the trapezoidal cuts.

Preferably, first, second spiral-guide face is the spiral-guide face of three sections shape unanimities, outward turning rising, end to end indentation between each section, and first, second spiral-guide face is positioned opposite to each other and adaptive each other.

Compared with prior art; The utility model is through protruding from the bottom profile certain distance that carries support with wheel when folding; Realize that car body utilizes the wheel walking after folding; Whole locomotive body bottom flush after wheel moves to and opens in the process that weight tray, the relative vehicle frame of wheel are opened in addition forms wheel from the further support to vehicle frame of the rear side of vehicle frame, the possibility of toppling before and after the car body when reducing vertical pendulum clearance Lee.

Description of drawings

Fig. 1 is the block diagram after the utility model baggage car folds;

Fig. 2 is the utility model baggage car weight tray, wheel is opened and the block diagram of pull bar after stretching;

Fig. 3 is that the manual baggage car weight tray of the utility model, wheel are opened the back face upwarding stereogram.

In conjunction with the accompanying drawing following Reference numeral of mark above that:

The 1-weight tray, 11-gusset, 12-gusset otch, 13-flange, 131-otch, 14-axle; The 2-vehicle frame, 21-transverse link, 22-pull bar, 23-handle, 24-driving handle; 25-first circular groove, the 26-first spiral-guide face, the cylindrical pull bar of 27-, 3-wheel stand, 31-second circular groove; The 32-second spiral-guide face, 33-fixed block, 34-pad, 4-wheel, 5-retracing spring.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of the specific embodiment.

The manual baggage car of the utility model is as shown in Figure 1, comprises vehicle frame 2, weight tray 1 and wheel 4.Weight tray 1, wheel 4 lay respectively at the front-back of vehicle frame 2, and two wheels 4 are socketed on the vehicle frame through wheel stand 3.Weight tray 1 can spin upside down folding with respect to vehicle frame 90 degree, and wheel 4 can be folding with respect to upset about vehicle frame 90 degree through wheel stand 3.Centering and parallel each other between two wheels 4 after folding with vehicle frame.

Further like Fig. 1, shown in 2; Vehicle frame comprises two groups of parallel telescopic pull bars 22, and through transverse link 21 captive joints, every group of pull bar inside is nested by joint from the bottom to top between every group of pull bar; Make pull bar 22 have length variable; Save headed by next joint pull bar, go up a joint and be minor details, the connecting rod while between the minor details pull bar is as handle 23.The bottom of first joint pull bar has the outside stepped extension in both sides, and the lower end of extension is cylindrical pull bar 27 as the part that head saves pull bar.Between two groups of pull bars 22 of handle 23 bottoms, also be provided with driving handle 24, driving handle 24 is along the upper and lower mobile drive element that stretches or lock as control pull bar 22 of pull bar.

Further like Fig. 1, shown in 3; The rear side of weight tray 1 (promptly launching the back near vehicle frame 2 one sides) edge is provided with and the corresponding caulking groove of first pitch circle cylindricality pull bar 27 lower ends; Each caulking groove all surrounds with 11 perpendicular of gussets of weight tray by three; Every gusset 11 is square or the tabular structure of oblong, and three gusset 11 formed breach vertical surface are to the place ahead of weight tray.The gap size of two parallel gusset centres and the lower end size of first pitch circle cylindricality pull bar 27 are suitable.Axle 14 through lateral direction penetrating between caulking groove and the cylindrical pull bar 27 that inserts scarf is connected, and can realize between weight tray 1 and the vehicle frame 2 90 rotations of spending, and the salient angle of two parallel gussets 11 is with arc transition.Weight tray 1 has the flange 13 that can stop luggage to slide with vehicle frame 2 bonded assemblys one side edge, and the wheel after folding is pressed close to (referring to Fig. 1) mutually with weight tray, and flange is provided with the suitable otch 131 of position, two places, size and wheel.

Further shown in Fig. 1-3; Wheel stand 3 one sides are provided with the hole that socket-connects with cylindrical pull bar 27 lower ends of vehicle frame; Opposite side is provided with the hold down groove of clamping wheel 4; Wheel stand 3 is connected with wheel 4 through axletree, and wheel stand 3 fixedly connects at gusset 11 tops of the caulking groove of vehicle frame pull bar through pad 34 and said weight tray with the bottom of vehicle frame 2 socket sides.Wheel stand 3 is provided with second circular groove 31 with stepped cylindrical expansion with the upper end that first joint pull bar socket-connects; The opening of second circular groove 31 upwards; Be socketed with reverse reset spring 5 in second circular groove 31; Retracing spring 5 is with cylindrical pull bar 27 sockets; The lower surface of retracing spring 5 connects with circular groove 31 inner end surfaces and captives joint with circular groove 31, and the upper surface of second circular groove 31 is the spiral-guide face 32 that three sections shape unanimities, outward turning are risen, end to end indentation between each section.Second circular groove, 31 corresponding positions of vehicle frame 2 bottoms and wheel stand are provided with accordingly, Open Side Down and end face is first circular groove 25 of the first spiral-guide face 26; The upper end socket of retracing spring 5, be fixed in this first circular groove 25 butt and can realize the relatively rotating of 90 degree (thereby realize wheel the expansion of turning up) each other each other between the first spiral-guide face 26 of second circular groove 31 of vehicle frame first circular groove 25, wheel stand, the second spiral-guide face 32.As shown in Figure 2; After cylindrical pull bar 27 wears successively and gets into retracing spring 5, second circular groove 31; Its terminal axis hole penetrates in the axle 14, and it is hinged to make that weight tray 1 and vehicle frame 2 form, and the weight tray 1 that overturns this moment makes its expansion; The bottom of second circular groove 31 is crossed the arc transition position from the indentation, there in the place ahead (the weight tray direction after launching) of gusset 11 and is arrived gusset 11 top indentation, there in the expansion process; Because less than the size apart from the top breach, the difference of two sizes is the vertical stroke of the wheel that forms in the wheel expansion process to axle 14 apart from the size at breach edge, the place ahead, the purpose of this vertical stroke is the bottom (Fig. 1) that in the flange otch 131 of weight tray 1, protrudes in whole locomotive body for the profile bottom of the wheel 4 after making weight tray 1 folding downwards; Still can " take turns " after making the baggage car foldable integral along contacting to earth; It is laborsaving to be easy to carry, and in expansion process wheel to move, launch fully the trailing wheel edge on vertically concordant with weight tray 1, realize supplementary support to vehicle frame.

Certainly, the caulking groove structure of above-mentioned weight tray also can be made into the structure of similar " camshaft ", as long as can when launch weight tray 1, wheel stand 3 be driven form " a vertically stroke " that makes progress when wheel 4 outward turnings launch, all can adopt.

Further as shown in Figure 3; Big, the following little trapezoidal cut 12 of going up of connecting before and after the upper surface of the horizontal gusset of weight tray 1 caulking groove (being the back gusset) is provided with; The corresponding position of wheel stand 3 is provided with the suitable fixed block 33 of otch therewith 12; Weight tray 1, wheel 4 are opened back fixed block 33 and are embedded in the otch 12, can avoid wheel 4 both sides to rock.

The principle of work and the course of action of the manual baggage car of the utility model are following:

Weight tray 1 is done 90 degree forward direction upsets around axle 14 with respect to vehicle frame and is opened; The pushing tow of the gusset 11 of weight tray 1 makes on the wheel stand 3 and moves (being to move on second circular groove 31 that forms of the difference in size of aforementioned two breach outer distance axis 14) in the process of opening; On the wheel stand 3 that moves past in the journey under the guiding of the first spiral-guide face 26, the second spiral-guide face 32, open by folding direction outward turning 90 degree; Wheel stand 3 set fixed blocks 33 after opening embed in the otch 12 of the set gusset 11 of weight tray; The sway of wheel is locked, and the rotation of wheel opening procedure makes retracing spring 5 be out of shape by elastic torsion.When folding; The thrusting action of 1 pair of wheel stand 3 of weight tray disappears; Under the effect of retracing spring 5, the folding bottom that under the guiding of spiral-guide face, moves down simultaneously and finally protrude in whole locomotive body downwards of wheel centering, the height that moves on the height of outshot and the expansion process is consistent.Like this, car body can utilize wheel 4 walkings after folding, and it is concordant with the lower surface of weight tray 1 to launch rear wheel 4 bottoms, when being formed on loading luggage from the further support of the rear side of vehicle frame 2 to vehicle frame 2.

Compared with prior art, the utility model realizes that through wheel is protruded from the bottom profile certain distance of weight tray when folding car body utilizes the wheel walking after folding; Whole locomotive body bottom flush after simultaneously wheel moves to and opens in the process that weight tray, the relative vehicle frame of wheel are opened forms wheel from the further support to vehicle frame of the rear side of vehicle frame, the possibility of toppling before and after the car body when reducing vertical pendulum clearance Lee.

More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.

Claims

1. a foldable luggage trolley is characterized in that, comprising:

Vehicle frame is provided with for flexible; Its underpart is provided with the cylindrical pull bar that is hinged with the baggage car weight tray, and said cylindrical pull bar top is provided with first circular groove (25), and first circular groove (25) lower surface is provided with the first spiral-guide face (26);

Weight tray, fit with said vehicle frame in its folding back, and it launches be provided with vertical with vehicle frame of back, is used to carry luggage; The weight tray side that connects to ground is provided with the vertical Stroke Control part of the wheel of captiveing joint with said weight tray;

Wheel stand; It has second circular groove (31) with the adaptive socket of said cylindrical pull bar; Second circular groove (31) upper surface is provided with and the second suitable spiral-guide face (32) of the said first spiral-guide face (26), second circular groove (31) the internal fixation rotary torsion retracing spring of taking a seat;

Said pull bar vertically is arranged in second circular groove (31), and the shaft hole sleeve of pull bar bottom is connected in the axle (14) of the vertical Stroke Control part of wheel; When weight tray launches; The vertical Stroke Control part of said wheel forms pushing tow to second circular groove (31); Move on vertically and launch at guiding wheel under the combined action of the said first spiral-guide face (26) and the second spiral-guide face (32) to the both sides outward turning; When weight tray folded, wheel inward turning under the effect of said rotary torsion retracing spring reclaimed and vertically moves down simultaneously; Vehicle wheel after folding edge at the bottom of the weight tray that protrudes in after folding.

2. foldable luggage trolley according to claim 1 is characterized in that, the vertical Stroke Control part of said wheel is the caulking groove structure that three gussets constitute; Said axle (14) is located on two gussets that said caulking groove structure is parallel to each other; The caulking groove structure has towards the place ahead of weight tray free end side breach and the top breach vertical with said the place ahead breach, and the place ahead breach is that arc transition is connected with the top breach; In the weight tray expansion process, said second circular groove (31) from said the place ahead indentation, there cross the arc transition position and arrive the top indentation, there.

3. foldable luggage trolley according to claim 2; It is characterized in that; The distance at said axle (14) and breach edge, top is greater than the distance of axle (14) with breach edge, the place ahead, and the difference of the size of two distances is the vertical stroke of said wheel in the outward turning expansion process.

4. according to any described foldable luggage trolley in the claim 1 to 3; It is characterized in that; The said weight tray side that connects to ground also is provided with the flange that prevents baggage slide, and said flange is provided with the vehicle wheel that allows after the folding otch (131) along the said flange of protrusion.

5. foldable luggage trolley according to claim 3 is characterized in that, the bottom of said second circular groove (31), is provided with pad with the junction of said caulking groove structure.

6. foldable luggage trolley according to claim 2; It is characterized in that; Connect and go up big, following little trapezoidal cut before and after being provided with on the back gusset of said caulking groove; The corresponding position of wheel stand is provided with the fixed block (33) suitable with said trapezoidal cut, and wheel launches the said fixed block in back (33) and embeds in the trapezoidal cut.

7. foldable luggage trolley according to claim 1; It is characterized in that; Said first, second spiral-guide face is the spiral-guide face of three sections shape unanimities, outward turning rising, end to end indentation between each section, and first, second spiral-guide face is positioned opposite to each other and adaptive each other.