CN2567100Y

CN2567100Y - Folding hand cart

Info

Publication number: CN2567100Y
Application number: CN 02242720
Authority: CN
Inventors: 程宝贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-02
Filing date: 2002-08-02
Publication date: 2003-08-20
Anticipated expiration: 2012-08-02

Abstract

The utility model relates to a folding hand cart, wherein, an elementary framework group of the utility model is pivoted with a straight-bar section of a pushing handle by a combining part; the straight-bar section is provided with a connecting block which can be pivoted with a rear supporting frame of rear wheels; the pushing handle is composed of the straight-bar section, a bending section and folding joints; long pipe parts at both sides of a riding frame framework group is arranged between a front supporting frame and the rear supporting frame, and a riding part is arranged among the long pipe part, the front supporting frame and the pushing handle; a coupled framework group is provided with two connecting rods which are respectively pivoted with the long pipe part and the rear supporting frame. By two-section joints of the pushing handle, the pushing handle can be folded into transverse three sections to reduce the width after folding; simultaneously, by the combining part, the pushing handle can be disengaged from the clamping state with the rear supporting frame to realize longitudinal folding and reduce the length after folding. Consequently, the utility model achieves the advantages that the operation is simple, the space occupied is reduced after folding, and the cost of storage and transporting is reduced.

Description

Foldable pushcart

Technical field

The utility model relates to hand barrow, refers to a kind of Foldable pushcart that can interlock returns the vehicle to the garage and knock off or launch especially.

Background technology

Be provided with handle 20 referring to Fig. 1,2, the hand barrow commonly used in two side front frames, 10 upper ends with front-wheel 101, level has extended extension 302 forward in after poppet 30 upper ends with trailing wheel 301, this extension 302 articulates with front frame 10, be provided with the portion of taking 40 between extension 302 and the front frame 10, between two front frames, 10 upper ends and two after poppet lower ends, be articulated, and respectively connect with control stalk portion 60 at upper end, the lower end of two connecting rods 50 with two cross-shaped connecting rods 50.

When returning the vehicle to the garage and knock off, then respectively two control stalk portions 60 are given recessed folding, make the no longer horizontal stay bolt of two control stalk portions 60, at this moment, just can be to the application of force in hand barrow two side direction, this hand barrow laterally draws hand barrow in and to be the shape that returns the vehicle to the garage and knock off under the interlock of operator's application force and two connecting rods 50.

But, this kind hand barrow in actual use, still tool is in many shortcomings:

1, owing to there is no any interlinked mechanism between two control stalks that the control hand barrow returns the vehicle to the garage and knock off, launches, therefore, returning the vehicle to the garage and knock off, when launching, must force in two control stalks one by one, quite inconvenience in the use.

2, when this hand barrow is taken, there is no the safety facilities of any anti-folding, therefore, two control stalks are very easily stressed and return the vehicle to the garage and knock off the danger when causing the infant to take.

3, when this hand barrow returns the vehicle to the garage and knock off, be laterally returning the vehicle to the garage and knock off of unistage type, so the volume after the folding is still quite huge, and is unfavorable for storage and transportation, and can increase the expense of storage and transportation.

4, the moving part that this hand barrow returns the vehicle to the garage and knock off, launches as interlock with the connecting rod of two cross-like, and the intersection articulated section of two connecting rods is again at center position returns the vehicle to the garage and knock off or when launching in this case, very easily cause the interlock dead angle of each member, so that returning the vehicle to the garage and knock off, can quite have some setbacks when launching.

Referring to Fig. 2, another commonly uses hand barrow, its structure is formed roughly with foregoing to commonly use hand barrow identical, difference is in and is connected with one pulls element 70 between two control stalks 60, when returning the vehicle to the garage and knock off, this pulls element 70 direct pull, removes the horizontal stay bolt state of two control stalks 60, makes the action of returning the vehicle to the garage and knock off more agile.Commonly use hand barrow though this hand barrow has improved first kind, must tortuous one by one two control stalks 60 can realize the shortcoming of returning the vehicle to the garage and knock off, but still not change: when 1. hand barrow launches, pull straight two control stalks 121 one by one; 2. be not provided with and launch safe lock member; 3. bulky after returning the vehicle to the garage and knock off, shared space is big; 4. two connecting rods intersect the articulated section at midway location, cause shortcoming such as return the vehicle to the garage and knock off, launch that interlock has some setbacks, and therefore, the actual effect of using is still undesirable.

Summary of the invention

Main purpose of the present utility model, be to provide a kind of Foldable pushcart, it mainly adopts the design in two-period form joint, make handle can be horizontal three sections turnovers and amount to, and the width after the reduction folding, simultaneously, utilize handle and after poppet to break away from the clip state from winding, make hand barrow can carry out vertical folding, the length of reduction after the folding, thereby make simple to operate easily, reduce space shared after the folding, reduce the cost of storage, transportation.

The technical solution of the utility model is: a kind of Foldable pushcart, mainly comprise: the basic framework group, take advantage of a skeleton group and interlock skeleton group: it is characterized in that: this basic framework group is on the front frame top of front-wheel, straight bar section with joint portion and handle articulates, and straight bar section is provided with the connecting block that can combine with the after poppet of trailing wheel; This joint portion is combined by pull piece and push block of combined block, fixed block, button, and this combined block is articulated between front frame and the straight bar section, and which is provided with can be for the end wall of button hook buckle; This fixed block is fixed on the end of straight bar section, can make straight bar section in fixed block, rotate an angle, one side of this fixed block forms storage tank, can ccontainingly be located in the elastic body of detaining the piece of pulling, simultaneously, this button piece of pulling slides on the straight bar section, and be positioned at the top of fixed block, a pull side of piece of this button is provided with the button hook that can be buckled on the combined block end wall, on pulling piece, button is provided with in addition recessed section of tool hypotenuse, the intrinsic push block of cover on the straight bar section above button is pulled piece, this push block is provided with the extension of tool hypotenuse, and this extension just can correspondingly be embedded in recessed section and hypotenuse with its hypotenuse; This handle is then by straight bar section, bending segment and amount to the joint and form, and this is amounted to the joint and comprises: loam cake, button, holding piece, spring, linking part, double-action plate and lower cover; Be covered with the combination bore of ccontaining button on being somebody's turn to do, this combination bore outer rim is provided with the scrobicular ring of ccontaining button two side projections, below button, be provided with holding piece, spring and control piece more in regular turn, this control piece is fixedly arranged on loam cake, its two side is respectively established the release elongated slot of an inlay card holding piece two side nose bars, the two perisporium ora terminalis that discharge one of the elongated slot side form a sagging section, ccontaining for the button projection, and button can be rotated in the scope of sinking between section and release elongated slot, but push button when the corresponding release of projection elongated slot, and drive holding piece to bottom offset; Otherwise then can't drive holding piece by push button; These loam cake two side correspondences are provided with the linking part, each is connected the bending segment that part is fixed in handle, this linking part is provided with one and discharges breach, and forms a retaining that resists the holding piece nose bar ora terminalis of pulling discharging breach one side, and the nose bar of holding piece is embedded in and discharges in the breach under the deployed condition; Two ends of this double-action plate are articulated in respectively and are connected on the part, are to intersect to be provided with, and two ends of extension spring then hang over an end of two double-action plates respectively with the horizontal direction cover; This lower cover is corresponding with loam cake to cover, and two linking parts can serve as that axle rotates with locking place of loam cake, lower cover simultaneously;

This takes advantage of mounting skeleton group, and the long tube portion of two sides is arranged between the forward and backward support, and is provided with a portion that takes advantage of between long tube portion, front frame and handle;

Two connecting rods of this interlock skeleton group are intersection and articulate, and its two end articulates with long tube portion and after poppet respectively.

Scheme explanation through above the utlity model has as can be known and commonly uses the better effect of hand barrow:

1, the utility model is provided with button, control piece sagging section and discharges elongated slot amounting to of hand barrow on the joint, when this button is gone to corresponding release elongated slot place, then but push button returns the vehicle to the garage and knock off, perhaps, rotary knob then can't return the vehicle to the garage and knock off by push button to the section place of sinking, promptly improve the safety precaution when hand barrow launches, increased occupant's safety.

2, this hand barrow is when returning the vehicle to the garage and knock off or launch, be connected the part rotation because of having extension spring, double-action plate to drive, and then can drive handle and realize returning the vehicle to the garage and knock off or launching, just can return the vehicle to the garage and knock off so under the interlock of complete and continuity, the user need only push button, promote handle forward, perhaps, with handle forward application of force pull-up be deployable hand barrow, it is quite convenient to use.

3, because not only laterally folding of hand barrow of the present utility model, and vertically doubling is returned the vehicle to the garage and knock off, and it is little that the shared volume in back that returns the vehicle to the garage and knock off is obviously commonly used hand barrow, is beneficial to storage, transportation, so can reduce the cost of storage and transportation.

4, the action of laterally returning the vehicle to the garage and knock off of this hand barrow except the interlock by interlock skeleton group, by the auxiliary drive of auxiliary interlock skeleton group, then can make returning the vehicle to the garage and knock off and launching the no interlock of action dead angle of hand barrow, and is more smooth and easy coherent.

Description of drawings

Fig. 1 is for commonly using the stroller frame composition.

Fig. 2, another commonly uses the stroller frame composition.

Fig. 3 is overall architecture lateral plan of the present utility model.

Fig. 4 is overall architecture back view of the present utility model.

Fig. 5, be local framework upward view of the present utility model.

Fig. 6 is local framework forward sight enlarged drawing of the present utility model.

Fig. 7 is for amounting to the joint three-dimensional exploded view on the utility model handle.

Fig. 8 is for making up birds-eye view in the joint of amounting on the utility model handle.

Fig. 9 is for making up upward view in the joint of amounting on the utility model handle.

Figure 10 is for making up the back cutaway view in the joint of amounting on the utility model handle.

Figure 11 is for amounting to local joint structure side cutaway view on the utility model handle.

Figure 12 is for amounting to the local joint structure cutaway view of bowing on the utility model handle.

Figure 13 is the three-dimensional exploded view of the utility model handle and awning dependency structure.

Figure 14 is the three-dimensional exploded view of the utility model joint portion.

Figure 15 is the combination of side view of the utility model joint portion.

Figure 16 is the lateral plan of another combination of the utility model joint portion.

Figure 17 is the lateral plan of the utility model turn knob.

Figure 18 is the birds-eye view of the utility model turn knob.

Figure 19 presses down the back view of the button of amounting to the joint for the utility model.

Figure 20, the graph of a relation of straight bar section and joint portion when returning the vehicle to the garage and knock off for the utility model.

Figure 21, the unitary side view when returning the vehicle to the garage and knock off for the utility model.

Figure 22, the whole back view when returning the vehicle to the garage and knock off for the utility model.

Figure 23, the graph of a relation of stretcher and connecting rod when returning the vehicle to the garage and knock off for the utility model.

Figure 24 is the birds-eye view of amounting to joint of the utility model after returning the vehicle to the garage and knock off.

Figure 25 is the unitary side view of the utility model after returning the vehicle to the garage and knock off.

Figure 26 is the whole back view of the utility model after returning the vehicle to the garage and knock off.

Figure 27 is the partial front elevation view of the utility model after returning the vehicle to the garage and knock off.

The specific embodiment

Shown in Fig. 3-6, a kind of Foldable pushcart, this hand barrow mainly comprises: basic framework group 1, take advantage of a skeleton group 2, interlock skeleton group 3 and auxiliary interlock skeleton group 4; Wherein:

Basic framework group 1, front frame 11 bottoms in two sides are provided with front-wheel 111, the top articulates with the straight bar section 121 of joint portion 5 with handle 12, and on the straight bar section 121 of handle 12 2 sides, articulate with the top of connecting block 13 respectively with after poppet 14, the bottom of this after poppet 14 is provided with trailing wheel 141, between two front frames 11, be provided with can recessed folding stretcher 112.

Take advantage of a skeleton group 2, by the long tube portion 21 that is located at two sides respectively and take advantage of a portion 22 to be constituted, this long tube portion 21 is located between front frame 11 and the after poppet 14, simultaneously, the rear end of long tube portion 21 segment distance that extends back, to form an extension 211, and group is established a glove basket 23 between two side extensions 211, take advantage of a portion 22 to be fixed on two long tube portions 21, between two front frames 11 and the handle 12, and take advantage of the cushion 221 of a portion 22, the base plate of the chair back 222 and glove basket 23 (not looking among the figure) all is spliced by many plate bodys, as for the body of rod (not looking among the figure) that crosses at the glove basket 23 between two extensions 211 then by pliable and tough material moulding, to cooperate the action of returning the vehicle to the garage and knock off of hand barrow.

Interlock skeleton group 3, comprise a connecting rod 31 and a trace 32 that two intersections articulate, two connecting rod 31 2 ends that intersect to articulate articulate with the front end and the after poppet 14 of the long tube portion 21 that takes advantage of a skeleton group 2 respectively, and trace 32 is then as the Connection Element between connecting rod 31 and the stretcher 112.

Auxiliary interlock skeleton group 4, form by two joining rods 41 and two bows 42, each articulates one end of two joining rods 41 with the after poppet 14 of two sides, the other end then articulates each other, as for two ends of this bow 42 then be articulated in respectively joining rod 41 in the middle of place and take advantage of an end of the extension of skeleton group 2 211.

When folding or launch, utilize and to take advantage of cooperating of a skeleton group 2, interlock skeleton group 3 and auxiliary interlock skeleton group 4 and basic framework group 1, can make the action of returning the vehicle to the garage and knock off or launching more smooth and easy.

Above-mentioned handle 12 is amounted to joint 6 connections by two straight bar sections 121, two bending segments 122 and and is combined; This two bending segment 122 is as two straight bar sections 121 and amount to the interface components in joint 6, after finishing combination, makes this handle 12 be one " ㄇ " font.

Referring to Fig. 7-12, amount to joint 6 and comprise:

One loam cake 61, its central interior place is provided with a combination bore 611, and the outer rim of combination bore 611 forms a scrobicular ring 612, and below reaching above the scrobicular ring 612, locate to be provided with screw hole column 613, and respectively there is an end wall 614 on the left side of scrobicular ring 612 and right side, on end wall 614, be provided with a groove 615, respectively be convexly equipped with the solid post 616 of a spiral shell again in the outside of two end walls 614.

One button 62 as a cap body, respectively is provided with a projection 622 that protrudes in its perisporium 621 cooresponding two sides.

One holding piece 63, two epitaxial lateral overgrowths that are the ring portion 631 of convex shape in the middle of it are established nose bar 632.

One control piece 64, as a cap body, the top of these control piece 64 perisporiums 641 and below respectively are connected with a lug 642, each lug 642 is provided with perforation 643, respectively form a release elongated slot 6444 on the left side and the right side of perisporium 641 again, simultaneously, discharging elongated slot 6444 sides in two sides respectively has a sagging section 645 along the cooresponding perisporium of same direction 641 ora terminalis places, and establishes a ring portion 646 of protruding at the place, bottom surface of control piece 64.

One spring 65 is set between the ring portion 631,646 of holding piece 63 and control piece 64.

Two are connected part 66, the one end forms the inserting section 661 of tubulose, the other end then is the portion that sets 662 of a circle, there is a through hole 663 this center of setting portion 662, and respectively establish a knock hole 664 in two sides of through hole 663, on the perisporium of the portion of setting 662, be provided with one again and discharge breach 665, make this set portion 662 form the retaining ora terminalis 666 of pulling backward from discharging breach 665 places.

Two double-action plates 67, its two end is organized knock hole 664 places that are located at two linking parts 66 respectively with interleaved mode, two end places of two double-action plates 67 respectively are provided with perforation 671 simultaneously, and on end limit near two end perforations 671, respectively be provided with an arc recess 672, and two arc recesses 672 on each double-action plate 67 are staggered corresponding the setting.

One extension spring 68, its two end are separately fixed at two and are connected the knock hole 664 of part 66 by the rear.

One lower cover 69 respectively is convexly equipped with a hole column 691 at its two end.

When amounting to joint 6 combination (referring to Fig. 7-12), button 62 is placed in the loam cake 61, and protrude out by the combination bore 611 of loam cake 61 and to pass, the projection 622 of button 62 just is contained in the scrobicular ring 612 of loam cake 61 simultaneously; Again holding piece 63 is placed button 62 belows, and two nose bars, 632 correspondences that make holding piece 63 are embedded in groove 615 places of loam cake 61 end walls 614, again two ends of spring 65 are set in the ring portion 631 of holding piece 63 and control piece 64 respectively, on 646, make spring 65 between holding piece 63 and control piece 64, pass perforation 643 on control piece 64 lugs 642 with screw 610, and locking is at the screw hole column 613 of loam cake 61, and with control piece 64, holding piece 63, spring 65, button 62 is fixed in the loam cake 61, simultaneously, release elongated slot 6444 correspondences of this control piece 64 two nose bars 632; Continuation is located at two with two double-action plates 67 with the interleaved mode group and is connected between the part 66, and pass the perforation 671 of double-action plate 67 and the knock hole 664 of linking part 66 with connecting element 620, two double-action plates 67 are intersected be articulated on the two linking parts 66, two ends with extension spring 68 are fixed on knock hole 664 places of two linking parts 66 near rear sides again, be connected part 66 with two again and insert loam cake 61 inside, and between the solid post 616 of the spiral shell of loam cake 61 2 ends, and the solid post 616 of spiral shell penetrated the through hole 663 that is connected part 66, again two hole columns, 691 correspondences of lower cover 69 are penetrated two be connected the other end of through hole 663 of parts 66 after, penetrate hole column 691 with spiral lock 630 and be fixed at the solid post 616 of spiral shell, each component composition of folding switch 6 is integral, treat that the inserting section 661 that will be connected part 66 is inserted in bending segment 122, and with it after the locking, the folding that can utilize this folding joint 6 control hand barrows whether.

Referring to Fig. 3,13, in handle 12 2 sides, and each sheathed sleeve pipe 123 is located in the top that is positioned at connecting block 13, the side of sleeve pipe 123 forms an inserting part 1231, one awning 124 (as shown in Figure 3) is arranged again, its two ends articulate each other and the arc skeleton 1241 of tool toughness on be provided with awning cover 1242, and in the articulated section of two arc skeletons, 1,241 two ends each affixed inserting section 1243; This inserting section 1243 can corresponding be intercalated in the inserting part 1231 of sleeve pipe 123 sides, and tilt 124 is fixed on the hand barrow; Again in handle 12 2 sides, and the place, below that is positioned at connecting block 13 is provided with two corresponding hole clippings 125 respectively, and the button product 126 of establishing a C shape is snapped in this place, and the protruding grain 1261 that protrusion is respectively arranged on the inwall of button product 126 2 ends, can corresponding build-in in the hole clipping 125 of handle 12, utilization is positioned at the restriction location of the sleeve pipe 123 and the button product 126 of connecting block 13 upper and lowers, connecting block 13 can be fixed on the handle 12.

Referring to Fig. 3,14,, be to combine by pull piece 53, push block 54 and extension block 55 of combined block 51, fixed block 52, button as for joint portion 5; Wherein:

Combined block 51 is the ㄈ shape piece of a hollow, the front side of its two sidewall 511 and rear side are respectively equipped with two perforation 512,513, after the perforation 512 of front side supplies the upper end of front frame 11 to embed in the combined block 51, pass fixing with connecting element 514, and the perforation 513 of rear side, then for the straight bar section 121 of handle 12 after placing among the combined block 51, with articulated part 515 it is articulated in combined block 51, and place, the bottom, front side of combined block 51 2 sidewalls 511, respectively be provided with recessed section 516 of the arc of an indent, and between two sidewalls, 511 rear sides upper ends, connecting the end wall 517 of an arc, this end wall 517 can be for reclining, can supply hook again.

One side of fixed block 52 forms one and wears groove 521, and wear be provided with on the groove 521 perforation 522, this perforation 522 is corresponding with horizontal slotted hole 1211 on handle 12 straight bar sections 121, when an end of handle 12 embed fixed block 52 wear groove 521 after, pass perforation 513,522 and slotted hole 1211 by articulated part 515, fixed block 52 is fixed on the straight bar section 121, and is articulated in joint portion 5, the other end one of this fixed block 52 is connected with a storage tank 524.

The upper end of detaining the sleeve pipe 531 of the piece 53 of pulling forms one recessed section 5311, and one side of recessed section 5311 is hypotenuse 5312, the side of this sleeve pipe 531 is provided with button hook 532, the below of this button hook 532 is provided with room 533, be provided with elastic body 534 among this room 533, and the other end of elastic body 534 exposes outside the room 533, and is contained in the storage tank 524 of fixed block 52.

The lower edge of this push block 54 protrudes an extension 541, one side of this extension 541 is provided with hypotenuse 542, make this extension 541 just can corresponding inlay card at pull recessed section 5311 of piece 53 of button, hypotenuse 542 is then corresponding with the hypotenuse 5312 of detaining the piece 53 of pulling, this push block 54 is provided with open-work 543, these open-work 543 corresponding handles 12 ends, set perforation 1212 can penetrate fixing for locations 544.

This extension block 55 is a ㄇ shape framework by section, the rear end of the sidewall 551 of its two side is provided with an arc section 552, just with recessed section 516 corresponding embedding mutually of the arc of combined block 51, be provided with perforation 553 in addition at these arc section 552 places, after being located between two sidewalls 551 of extension block 55 for front frame 11, penetrate locking by a connecting element 554, be connected with a supporting blade 555 (as shown in Figure 3) on the inside side walls 551 of this extension block 55, the other end of this supporting blade 555 is located at the long tube portion 21 that takes advantage of a skeleton group 2, to support extension block 55.

Referring to Figure 14-16, when desiring to be assembled portion, earlier push block 54 is set in the end of handle 12 straight bar sections 121, and locations 544 is passed the open-work 543 of push block 54, the perforation 1212 of straight bar section 121, push block 54 is fixed on the straight bar section 121, again straight bar section 121 is passed the sleeve pipe 531 of detaining the piece 53 of pulling, make straight bar section 121 ends be contained in wearing in the groove 521 of fixed block 52, one end was contained in the pull other end of the elastic body 534 in the room 533 of piece 53 of button and just was contained among the storage tank 524 of fixed block 52 this moment, again fixed block 52 is placed 511 of the sidewalls of combined block 51, and the perforation 513 of articulated part 515 being passed combined block 51, the perforation 522 of fixed block 52 and the slotted hole 1211 of straight bar section 121 are installed in joint portion 5 on the straight bar section 121 of handle 12; In addition, the upper end of front frame 11 is inserted 511 of two sidewalls of combined block 51, and pass the perforation 512 and front frame 11 of combined block 51 by connecting element 514 after, combined block 51 and front frame 11 are articulated the location each other, again, the upper end of this front frame 11 also is embedded at 551 of two sidewalls of extension block 55, penetrates perforation 553 and front frame 11 by connecting element 554, the two is articulated the location, with front frame 11 and handle 12 windings together by joint portion 5.

Referring to Fig. 3,14-16, when hand barrow is deployed condition, the button of this joint portion 5 is pulled piece 53 because of being subjected to the pushing tow of elastic body 534, make recessed section 5311 and hypotenuse 5312 detaining the piece 53 of pulling, all the time corresponding chimeric with push block 54 extensions 541 and hypotenuse 542, simultaneously, detain end wall 517 places of button hook 532 hooks of the piece 53 of pulling at combined block 51, the button piece 53 of pulling can't be separated with combined block 51, and extension block 55 is because of the support of the supporting blade 555 that is subjected to and takes advantage of the long tube portion 21 of a skeleton group 2 and be connected with, and pushing tow is on combined block 51, with its unidirectional locking.

Referring to Fig. 7,10-12, this amounts to joint 6 when hand barrow is deployed condition, rotatable button 62, make two projections 622 on the button 62 that is contained in loam cake 61 scrobicular rings 612 places no longer corresponding to the release elongated slot 6444 of control piece 64, and corresponding to sagging section 645 of control piece 64, and kept off by the perisporium 641 at this place and to be pulled, button 62 can be rotated in two sagging sections, but can't be pressed down by external force, causing two nose bars 632 of holding piece 63 can not break away from the release breach 665 that is connected part 66 can't move down, and linking part 66 can not be rotated along the axle center of spiral lock 630, thus make the deployed condition of this hand barrow locked, the safety when the increase infant takes.

Referring to Figure 17-22, if desire to carry out returning the vehicle to the garage and knock off during action of hand barrow, at first the backward rotation button 62, make projection 62 correspondences of button 62 the release elongated slot 6444 of control piece 64, application of force push button 62, when button 62 is pressed down, drive holding piece 63 is shifted downwards along the release elongated slot 644 of control piece 64, make the nose bar 6 32 of holding piece 63 2 sides break away from the release breach 665 that is connected part 66, under the elastic-restoring force effect of this extension spring 68, be connected part 66 toward interior pulling with two, because being articulated in two respectively, the two ends of two double-action plates 67 are connected part 66, can making two, to be connected parts 66 be that pivot center rotates smoothly with spiral lock 630, and two be connected parts 66 and will compress the nose bar 632 of holding piece 63 with the retaining ora terminalis 666 of pulling, and makes two linking parts 66 be rotatable state; And be articulated in the bending segment 122 and the straight bar section 121 of the handle 12 that is connected part 66, and will under the drive that is connected part 66 rotations, make the straight bar section 121 of handle 12, with the axle center rotation of itself, and the angle of its rotation is limited by itself set slotted hole 1211; And straight bar section 121 is when rotating, rotate driving the push block 54 that is fixedly arranged on the straight bar section 121 in the lump, and the rotation of push block 54, certainly will be with the pull hypotenuse 5312 of piece 53 of its hypotenuse 542 pushing tow buttons, force the button piece 53 of pulling to be shifted downwards, and compresses elastomeric 534, make the button hook 532 of detaining the piece 53 of pulling break away from the end wall 517 of combined blocks 51, remove and detain the constraint of pulling between piece 53 and the combined block 51, at this moment, as long as on handle 12, omit Shi Yili backward, just hand barrow can be separated with the junction of front frame 11 and longitudinally recessed analysing from handle 12, certainly, in the process of vertical recessed folding, this hand barrow will be under the interlock of its interlock skeleton group 3 and auxiliary interlock skeleton group 4, with take skeleton group 2 and cooperate, make this hand barrow can finish horizontal folding simultaneously, and finish the process of returning the vehicle to the garage and knock off of hand barrow, (shown in Figure 24-27).

Referring to Figure 17-23, when desire will be the hand barrow expansion of the state of returning the vehicle to the garage and knock off, hand is directly held on handle 12, and the application of force slightly forward, along with the application of force upwards promotes handle 12, this is connected part 66 will be that rotate in the axle center with spiral lock 730 thereupon, and this rotation will be pullled extension spring 68 once again, simultaneously, drive the bending segment 122 and straight bar section 121 of handle 12, make straight bar section 121 begin to rotate, when hypotenuse 542 correspondences of the push block 54 on being fixedly arranged on straight bar section 121 hypotenuse 5312 of detaining the piece 53 of pulling, this elastic body 534 is just detained the piece 53 of pulling with top on its restoring force, make button pull piece 53 at two hypotenuses 5312, under 542 the mutual action, retreat to original position gradually, and button pull the button hook 532 of piece 53 just corresponding the end wall 517 of combined block 51, the application of force slightly again, the button hook 532 of piece 53 of button can being pulled is snapped into end wall 517, forms mutual fixing state, so far, whole hand barrow will be in basic framework group 1, take advantage of a skeleton group 2, under the mutual action of interlock skeleton group 3 and auxiliary interlock skeleton group 4, and launch glibly smoothly.

In addition, the arc skeleton 1241 of the awning 124 of the utility model hand barrow is to be made by the toughness material, so, when this hand barrow returns the vehicle to the garage and knock off action, can't cause obstruction to the action of returning the vehicle to the garage and knock off.

What deserves to be mentioned is, when hand barrow returns the vehicle to the garage and knock off or launch to move,, can make forward and

backward support

11,14 produce interlock, and the interlock of after poppet 14 will drive interlock skeleton 3, auxiliary interlock skeleton group 4 and take advantage of an interlock of skeleton group 2 because of the application of force on handle 12.So connecting rod 31 of after poppet 14, drive the trace 32 on it, can drive stretcher 112 actions of 11 of two side front frames, and, after poppet 14 drives bow 42 by joining rod 41, drive 21 actions of long tube portion by bow 42 again, therefore, the action that laterally folds of this hand barrow can be more smooth and easy coherent, easy.

Moreover the handle 12 2 side places of the basic framework group 1 of this hand barrow are provided with the ring piece 15 that protrudes to rear side, and this ring piece 15 can be for hanging article when hand barrow is deployed condition; And on two after poppets 14, respectively being provided with snap close 16, the position that this snap close 16 is set is when returning the vehicle to the garage and knock off state at hand barrow, just corresponding to above-mentioned ring piece 15, after returning the vehicle to the garage and knock off, snap close 16 can be snapped on the ring piece 15, and the state of returning the vehicle to the garage and knock off is fixed, and helps carrying and collecting.

Claims

1, a kind of Foldable pushcart, mainly comprise: the basic framework group, take advantage of a skeleton group and interlock skeleton group: it is characterized in that: this basic framework group is on the front frame top of front-wheel, articulates with the straight bar section of joint portion and handle, and straight bar section is provided with the connecting block that can combine with the after poppet of trailing wheel; This joint portion is combined by pull piece and push block of combined block, fixed block, button, and this combined block is articulated between front frame and the straight bar section, and which is provided with can be for the end wall of button hook buckle; This fixed block is fixed on the end of straight bar section, can make straight bar section in fixed block, rotate an angle, one side of this fixed block forms storage tank, can ccontainingly be located in the elastic body of detaining the piece of pulling, simultaneously, this button piece of pulling slides on the straight bar section, and be positioned at the top of fixed block, a pull side of piece of this button is provided with the button hook that can be buckled on the combined block end wall, on pulling piece, button is provided with in addition recessed section of tool hypotenuse, the intrinsic push block of cover on the straight bar section above button is pulled piece, this push block is provided with the extension of tool hypotenuse, and this extension just can correspondingly be embedded in recessed section and hypotenuse with its hypotenuse; This handle is then by straight bar section, bending segment and amount to the joint and form, and this is amounted to the joint and comprises: loam cake, button, holding piece, spring, linking part, double-action plate and lower cover; Be covered with the combination bore of ccontaining button on being somebody's turn to do, this combination bore outer rim is provided with the scrobicular ring of ccontaining button two side projections, below button, be provided with holding piece, spring and control piece more in regular turn, this control piece is fixedly arranged on loam cake, its two side is respectively established the release elongated slot of an inlay card holding piece two side nose bars, the two perisporium ora terminalis that discharge one of the elongated slot side form a sagging section, ccontaining for the button projection, and button can be rotated in the scope of sinking between section and release elongated slot, but push button when the corresponding release of projection elongated slot, and drive holding piece to bottom offset; Otherwise then can't drive holding piece by push button; These loam cake two side correspondences are provided with the linking part, each is connected the bending segment that part is fixed in handle, this linking part is provided with one and discharges breach, and forms a retaining that resists the holding piece nose bar ora terminalis of pulling discharging breach one side, and the nose bar of holding piece is embedded in and discharges in the breach under the deployed condition; Two ends of this double-action plate are articulated in respectively and are connected on the part, are to intersect to be provided with, and two ends of extension spring then hang over an end of two double-action plates respectively with the horizontal direction cover; This lower cover is corresponding with loam cake to cover, and two linking parts can serve as that axle rotates with locking place of loam cake, lower cover simultaneously;

2, Foldable pushcart according to claim 1 is characterized in that: described combination bore two sides of amounting to the loam cake in joint respectively are provided with an end wall, the corresponding groove that can supply the holding piece nose bar to wear that is provided with on the end wall.

3, Foldable pushcart according to claim 1 is characterized in that: the ring portion that respectively is convexly equipped with the protrusion of an ammunition feed spring two end sleeves on the described holding piece of amounting to the joint and the control piece.

4, Foldable pushcart according to claim 1 is characterized in that: the described perisporium of amounting to the control piece in joint is provided with the lug that correspondence is set up, and can wear and locks at the loam cake appropriate location for screw.

5, Foldable pushcart according to claim 1 is characterized in that: the described linking part of amounting to the joint includes an inserting section and and sets portion, the bending segment winding of this inserting section and handle, and this portion of setting then is articulated in loam cake and lower cover.

6, Foldable pushcart according to claim 1 is characterized in that: the described double-action plate of amounting to the joint is provided with the opening direction difference, can dodge the arc recess that is connected part and upper and lower cover articulated section.

7, Foldable pushcart according to claim 1, it is characterized in that: the sheathed sleeve pipe in the top of the connecting block of described handle two sides, and the side at sleeve pipe forms an inserting part, one tilt is arranged, and it is provided with tilt on the arc skeleton of tool toughness, and in each affixed inserting section of arc skeleton two ends, this inserting section correspondence is intercalated in the inserting part of sleeve pipe side, and this tilt is fixed on the hand barrow.

8, Foldable pushcart according to claim 1, it is characterized in that: the sheathed sleeve pipe in connecting block top of described handle two sides, and the side at sleeve pipe forms an inserting part, another tilt, it is provided with tilt on the arc skeleton of tool toughness, and in each affixed inserting section of arc skeleton two ends, this inserting section correspondence is intercalated in the inserting part of sleeve pipe side, and this tilt is fixed on the hand barrow; Be provided with two corresponding hole clippings again on the handle below the contiguous block, the button product of C shape be located in the contiguous block below, and the protruding grain of protrusion is respectively arranged on the inwall of button product two ends, can corresponding be mounted in the hole clipping of handle.

9, Foldable pushcart according to claim 1 is characterized in that: be provided with the stretcher that is multiple stage between the described two side front frames.

10, Foldable pushcart according to claim 9 is characterized in that: be provided with a trace that can drive stretcher between multiple stage stretcher between the described two side front frames and the connecting rod in the interlock skeleton group.

11, Foldable pushcart according to claim 1 is characterized in that: the described long tube portion rear end of skeleton group two side of taking advantage of extends an extension backward, and in long tube portion, take advantage of and be provided with the glove basket between a portion and the extension.

12, Foldable pushcart according to claim 1 is characterized in that: two sides of described handle convex with the ring piece for the snap close buckle backwards.

13, Foldable pushcart according to claim 12 is characterized in that: respectively be provided with the corresponding snap close that can be snapped in handle ring piece under the state of returning the vehicle to the garage and knock off on described two after poppets.

14, Foldable pushcart according to claim 1 is characterized in that: also be provided with an auxiliary interlock skeleton group on the described hand barrow, this auxiliary interlock skeleton group is made up of two joining rods and two bows, each articulates one end of this joining rod with the after poppet of two sides, and the other end then articulates each other; Two ends of this bow then are articulated in the middle place of joining rod respectively and take advantage of an end of skeleton group extension.

15, Foldable pushcart according to claim 1 is characterized in that: described joint portion also is provided with an extension block, and the one end is articulated in front frame, and the other end then supports the location by a supporting blade that is articulated in long tube portion.

16, Foldable pushcart according to claim 15 is characterized in that: an arc section is arranged on the described extension block, and the combined block of joint portion is provided with recessed section of arc, recessed section corresponding embedding mutually of this arc section and arc.