CN2406891Y - Collapsible device for trolley - Google Patents

Abstract

The utility model relates to a retracting and folding device for three-wheel handcarts. In the utility model, the top ends of both sides of a front vehicle frame are respectively fixedly provided with a connecting seat; the top sides of the connecting seats extend and are provided with a clamping element; both ends of a pushing handgrip are respectively pivoted at one side of each of the connecting seats; the pin joint positions of the pushing handgrip are respectively penetrated with a joiner which is provided with a groove which can be embedded with the clamping elements of the connecting seats; one of the joiners convexly extends a jointing hook on the groove position for being hooked and jointed with the clamping element; one end of each jointing hook, which faces the pushing handgrip, extends and is connected with a connecting rod; the tail ends of the two connecting rods are mutually connected. When the connecting rods are pulled for causing jointing hooks on both sides and clamping elements to simultaneously disengage, the pushing handgrip can be caused to be downwards rotated for reaching the goal of retracting and folding.

Description

The folding mechanism of buggy

The utility model relates to a kind of baby stroller, particularly relates to a kind of simple to operationly, folds the back volume-diminished, can reduce the folding mechanism of the buggy that takes up room.

The vehicle kind that general baby learns to walk or rides instead of walk is a lot, as: baby stroller, and for easy to carry, collection do not take up space, and can place car trunk or than in the small space, so this baby stroller just must have the function that can fold, reduce volume.As Fig. 1, shown in 2, a kind of baby stroller 10 of the usefulness of in the past going out to ride instead of walk, be to be arranged with a seat support 12 and a sunshield 13 at a skeleton 11 end faces, and before the underframe 14 of this baby stroller 10, back two ends respectively are pivoted with wheel 15, and these skeleton 11 nearly both sides, stage casing respectively are provided with a pole 16, and these pole 16 other ends and underframe 14 pivots are tied, be provided with a jack 17 at these skeleton 11 front ends again, cooperate this jack 17 to be provided with a positioning seat 18 at these underframe 14 leading portions, and wear a positioning pluging rod 19 with elasticity recovery at this positioning seat 18, whereby, just can be when using this hand barrow 10, these skeleton 11 front ends are placed in the positioning seat 18, and utilize this positioning pluging rod 19 and jack 17 intercalations to locate, support to arrive in skeleton 11 and bottom bar 14 by this pole 16 simultaneously, making the seat support 12 of this hand barrow 10 have a tension force lies for facing upward, as shown in Figure 3, when desiring to fold this hand barrow 10, need only be with this sunshield 13 toward skeleton 11 rotations, be pulled upwardly this positioning pluging rod 19 again, this positioning pluging rod 19 is separated with jack 17, then, this skeleton 11 is pushed away forward, make skeleton 11 and underframe 14 utilize the articulated section with this pole 16 to be fulcrum respectively, draw close foldingly mutually, just this skeleton 11 can be stacked in underframe 14 end faces, finish collapse state.Though above-mentioned structure can make these hand barrow 10 single-piece volumes reduce when folding,, but still have following shortcoming in use:

This hand barrow 10 is when folding, be to make this skeleton 11 be stacked in underframe 14 end faces, after it folds, though can reduce whole upper and lower shared space, but under the situation that this skeleton 11 after superimposed stretches forward, the extended length that folds of this baby stroller 10 causes this baby stroller 10 can't reach when collection and dwindles the shortcoming that storEs the space, and is difficult for being accommodated in the car trunks of various different sizes.

It is a kind of simple to operation that the purpose of this utility model is to provide, and folds the back volume-diminished, can reduce the folding mechanism of the buggy that takes up room.

The folding mechanism of buggy of the present utility model, be by a front vehicle frame, an one back vehicle frame and a handle are formed, before being somebody's turn to do, be provided with one group of trace between back vehicle frame, and before being somebody's turn to do, before back frame end respectively is pivoted with, rear wheel, and group is provided with a seat webbing on this front vehicle frame and the handle, and this handle middle section is equiped with sunshield, be characterized in: this top, front vehicle frame both sides is installed with a joint seat respectively, this joint seat top side extension is provided with a shackle member, and these handle two ends and difference pivot knot are in this Connection Block one side, respectively be equipped with a fastener at this handle pivot knot place, this fastener is provided with a groove, this groove is to set therebetween for the shackle member of this joint seat, and this fastener has protruded out a joint at groove and has colluded, engage for colluding to hold with this shackle member, each joint colludes an end and is connected to a connecting rod towards this handle top extension, and this two connecting rod end then interconnects.

Whereby,, just this handle can be rotated, fold the back volume-diminished and reach, the purpose that minimizing takes up room as long as this connecting rod of pulling colludes with shackle member the joint of both sides and breaks away from simultaneously.

, be elaborated to the folding mechanism of buggy of the present utility model below by most preferred embodiment and accompanying drawing, in the accompanying drawing:

Fig. 1 is the schematic perspective view of baby stroller in the past;

Fig. 2 be in the past in the baby stroller positioning seat in conjunction with scheme drawing;

Fig. 3 is the folding scheme drawing of baby stroller in the past;

Fig. 4 is the schematic perspective view of the utility model preferred embodiment;

Fig. 5 is the sectional perspective decomposing schematic representation of the utility model preferred embodiment;

Fig. 6 is the part combination cross-sectional schematic of the utility model preferred embodiment;

Fig. 7 be the utility model preferred embodiment amount to the action cross-sectional schematic;

Fig. 8 is the schematic side view that the utility model preferred embodiment folds fully.

Shown in Fig. 4,5, the folding mechanism of buggy of the present utility model, comprise a front vehicle frame 20, a back vehicle frame 30 and a handle 40, be provided with one group of trace 50 at this 20,30 of forward and backward vehicle frame, and group is provided with a seat webbing 60 on this front vehicle frame 20 and the handle 40, and then is equiped with sunshield 70 in these handle 40 middle sections.

This front vehicle frame 20 is to connect to shape wide at the top and narrow at the bottom by two preceding hack lever 21 symmetries, wheel seat 22 before its bottom forms one, for the front-wheel 23 that is pivoted, hack lever 21 tops be installed with a joint seat 24 respectively at this before two, these joint seat 24 top sides form a cancave cambered surface 241, and extension is provided with a slightly curved shackle member 242 on this cancave cambered surface 241, this shackle member 242 is provided with a draw-in groove 243, this joint seat 24 is provided with a pivot ear 244 at cancave cambered surface 241 sides, be pivoted therebetween for these handle 40 ends, be provided with another pivot ear 245 in this joint seat 24 downsides extension, can be pivoted for this trace 50.

This back vehicle frame 30 is to be inverted U-shaped union lever 31 bindings two back stays 32 by one to form, and each back stay 32 lower end also is provided with a rear wheel seat 33, and for the trailing wheel 34 that is pivoted, tie in these handle 40 both sides each back stay 32 upper end then pivot.

This handle 40 is to be bent into the shape of falling U by hollow tube 41 one, and its both ends and difference pivot knot are on the pivot ear 244 of this joint seat 24, this hollow tube 41 both ends one side then is provided with a short slot 411, and respectively be provided with a long slot bore 412 in this nearly upper end, hollow tube 41 both sides, these handle 40 pivot knot place upsides respectively are equipped with a fastener 42, this fastener 42 cooperates the cancave cambered surface 241 of this joint seat 24 to be formed with an arcuate engagement surface 421, and on this face of joint 421, cooperate the shackle member 242 of this joint seat 24 to be provided with a groove 422, can set therebetween for this shackle member 242, and these fastener 42 upsides also are formed with a pivot ear 423, can be for two back stays, the 32 upper end pivot knots of this back vehicle frame 30, in addition, short slot 411 from these handle 40 two ends respectively protrudes out and is provided with one and engages and to collude 43 this fastener 42 at groove 422 places, this joint colludes 43 1 ends and has received a connecting rod 44 towards the handle top, this connecting rod 44 is abutted against to close and colludes 43 1 ends and be provided with a slotted eye 441, and each connecting rod 44 is to be located in inside, handle 40 hollow tubes, 41 both sides, its upside end is the long slot bore 412 that protrudes out these hollow tube 41 upper end side, and respectively be pivoted with a crank 45 that bends at these handle 40 long slot bores 412 upsides, these two cranks, 45 1 ends also are connected with this connecting rod 44, these two cranks, 45 other ends then link mutually with an inverted U-shaped operating handle 46, in addition, on each connecting rod 44, collude 43 places and be arranged with a spring 47 near joint, these spring 47 lower ends compress this joint and collude 43, and the upper end then is subjected to set pin 48 blocks that are located in these connecting rod 44 slotted eyes 441 places.

This trace 50 1 end pivots knot is in vehicle frame 30 middle sections, back, and the other end then is hubbed on these joint seat 24 downside pivot ears 245.

As Fig. 4, shown in 6, when using this buggy, be that this handle 40 is pulled upwardly, these handle 40 front ends are pivoted in the upper end of front vehicle frame 20 relatively, at the same time, the top of these back vehicle frame 30 2 back hack levers 32 is pulled up with handle 40, and before linking this, back vehicle frame 20,30 trace 50 should before, back vehicle frame 20,30 strut to the location, when this handle 40 turns to the location, the face of joint 421 of this fastener 42 at its two ends is fitted mutually with the cancave cambered surface 241 of these front vehicle frame 20 top joint seats 24, and the shackle member 242 of this joint seat 24 and embedding in the groove 422 of this fastener 42, at this moment, this joint colludes 43 promotions that are subjected to top side spring 47, makes this joint collude the draw-in groove 243 that the automatic inlay card in 43 ends is gone into this joint seat 24, and finishes assembling.

When desiring to fold this buggy, as shown in Figure 7, earlier this operating handle 46 is pressed to handle 40, an end that makes this crank 45 link connecting rod 44 is upturned, simultaneously this connecting rod 44 is pulled back, then engage and collude 43 and also and then retreat with these connecting rod 44 bonded assemblys, and disengaging and these joint seat 24 draw-in grooves 243 is chimeric, at this moment, this handle 40 is pressed down, its front end is pivoted downwards in the upper end of this front vehicle frame 20 relatively, and draw close to this front vehicle frame 20, because of this handle 40 and front vehicle frame 20 articulated section angles change, cause this front vehicle frame 20, handle 40, back vehicle frame 30, the four-bar linkage structure that trace 50 is formed is drawn close mutually, forms collapse state as shown in Figure 8 at last.

When the utility model folds, make handle 40 and front vehicle frame 20 break away from chimeric as long as press down this operating handle 46, again this handle 40 is rotated and draws close with front vehicle frame 20, this back vehicle frame 30 and trace 50 also are superimposed with each other with front vehicle frame 20, handle 40 simultaneously, amount to the back three-wheel and can form parallel landing, then its entire length and height reduce and dwindle its volume simultaneously, therefore more convenient collection.

Claims (5)

1. the folding mechanism of a buggy, comprise a front vehicle frame, an one back vehicle frame and a handle, before being somebody's turn to do, be provided with one group of trace between back vehicle frame, and before being somebody's turn to do, before back frame end respectively is pivoted with, rear wheel, and group is provided with a seat webbing on this front vehicle frame and the handle, and this handle middle section is equiped with sunshield, it is characterized in that: this top, front vehicle frame both sides is installed with a joint seat respectively, this joint seat top side extension is provided with a shackle member, and these handle two ends and difference pivot knot are in this joint seat one side, respectively be equipped with a fastener at this handle pivot knot place, this fastener is provided with a groove of setting for the shackle member of this joint seat, this fastener protrudes out one at groove and holds the joint that engages and collude for colluding with this shackle member, and each engages and colludes an end is to extend towards the handle top to be connected with a connecting rod, and this two connecting rod end interconnects.

2. the folding mechanism of buggy as claimed in claim 1, it is characterized in that: the connecting rod that this joint colludes can be located in the handle, and its end protrudes out this handle, and links mutually with an operating handle.

3. the folding mechanism of buggy as claimed in claim 1, it is characterized in that: these operating handle two ends respectively are consolidated with a crank, and this crank also is hubbed on the handle both sides, and this crank one end links this connecting rod.

4. the folding mechanism of buggy as claimed in claim 1 is characterized in that: be arranged with a shackle member that supplies this joint of promotion to collude downward and this joint seat on the connecting rod that this joint colludes and collude the spring of holding.

5. the folding mechanism of buggy as claimed in claim 1 is characterized in that: the downside of this joint seat forms one for be pivoted therebetween pivot knot ear of this trace one end.

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