CN202935400U

CN202935400U - Foldable larry

Info

Publication number: CN202935400U
Application number: CN201220557374XU
Authority: CN
Inventors: 古正煇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-26
Filing date: 2012-10-26
Publication date: 2013-05-15
Anticipated expiration: 2022-10-26

Abstract

The utility model discloses a foldable larry. The foldable larry comprises a larry main body and wheel bodies arranged on the larry main body; the larry main body comprises an upper guardrail pipe, a lower guardrail pipe, supporting pipes and a central axle pipe, wherein the upper guardrail pipe is movably hinged on the central axle pipe; the supporting pipes are arranged between the upper guardrail pipe and the lower guardrail pipe; the central axle pipe is connected with a locking clamp; the lower guardrail pipe is movably hinged on the locking clamp; an elastic piece and a lock sleeve knob for controlling the opening/closing of the elastic piece are arranged on the lower guardrail pipe; the elastic piece at least comprises a first projection and a second projection linked with the first projection, which both bulge out of the surface of the elastic piece; the first projection is matched with the lock sleeve knob; a second hinge hole matched with the second projection is arranged on the locking clamp. The foldable larry is simple in structure, convenient and quick in operation, and stable in connection, occupies small space, and can bear a larger load.

Description

Folding pulling a cart

Technical field

The utility model relates to a kind of pulling a cart, and relates in particular to a kind of folding pulling a cart.

Background technology

The Chinese patent that application number is 98200812.0 discloses a kind of buggy of tool folding mechanism, comprise a front vehicle frame, a rear vehicle frame, an article basket holder and a handle, set firmly a connecting block with the handle that is pivoted on the front vehicle frame top, handle can be folded to the front-wheel direction, and the length after reducing buggy and folding, and, the article basket holder that but front vehicle frame and rear vehicle frame are mat one eighty percent discounts to be folded links, while making forward and backward vehicle frame fold, can mutually draw close folded, therefore, when folding, can effectively reduce volume, more convenient in use.But this folding structure of pulling a cart is firm not.

Summary of the invention

The utility model mainly is to provide a kind of folding pulling a cart, simple in structure, simple operation, and stable connection, take up room little, can bear than heavy load.

Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: it comprises the body of pulling a cart, be arranged on the wheel body on the described body of pulling a cart, the body of pulling a cart comprises upper hurdle tube, lower hurdle tube, support tube and central siphon, described upper hurdle tube is movably articulated on described central siphon, be provided with described support tube between upper hurdle tube and described lower hurdle tube, be connected with only locker on central siphon, lower hurdle tube is movably articulated on described only locker, described lower hurdle tube is provided with shell fragment and controls the lock tube knob of described shell fragment opening and closing, described shell fragment at least comprises the first salient and the second salient linked with described the first salient, the first salient and the second salient all protrude from the shell fragment surface, described the first salient and described lock tube knob match, described only locker is provided with the second hinge hole matched with described the second salient.The utility model can be received folded when not using, and has greatly reduced the space taken.Upper hurdle tube of the present utility model and intermediate hurdles pipe are movably hinged, and lower hurdle tube is by being movably hinged and being connected on the intermediate hurdles pipe with locker only, when the utility model is opened, upwards draw lower hurdle tube, make lower hurdle tube launch, then rotate the lock tube knob, coordinate with the first salient by the lock tube knob and control shell fragment, make shell fragment launch, the second salient on shell fragment is connected with the second hinge hole on stopping locker like this, the second salient stretches in the second hinge hole, thereby make lower hurdle tube and locker only become and there are two hinged places from thering is a hinged place, from one point articulated become two point articulated, two hinged places are mutually spacing, make lower hurdle tube and stop locker and can't change again position, like this annexation of lower hurdle tube and locker only from be movably hinged be transformed into relative fixing, now upper hurdle tube also is opened, and be supported on lower hurdle tube by support tube, receive while folding, only need rotation lock tube knob, make shell fragment shrink, the second salient on shell fragment separates with the second hinge hole on locker only like this, and lower hurdle tube becomes one with the hinged place of locker only, and lower hurdle tube has lost the spacing of second hinged place with locker only, lower hurdle tube has again become and has been movably hinged from relative fixing with the annexation of stopping locker, downward folding lower hurdle tube more now, support tube can drive the downward folding of upper hurdle tube, and final upper and lower hurdle Guan Jun is folded in the intermediate hurdles pipe.

As preferably, described shell fragment is connected in described lower hurdle tube, and described the first salient and the second salient stretch out the tube wall of lower hurdle tube.The salient of shell fragment has elastomeric compressible salient in the tube wall surface formation of lower hurdle tube.

As preferably, described shell fragment comprises two elastic strip bodies in left and right, and described salient is arranged on elastic strip body.When salient is stressed, shell fragment is opening and closing simultaneously also like this.

As preferably, described lock tube knob sleeve is connected on described lower hurdle tube, the lock tube knob is provided with the abnormity matched with described the first salient and pushes away hole, and described abnormity pushes away hole and comprises for contacting with described the first salient, also can controlling by contact position between change and the first salient the camming surface inwall of shell fragment opening and closing.During the rotation of lock tube knob, the position that abnormity pushes away the camming surface inwall in hole changes with the relative position contacted of the first salient, radian difference due to the camming surface inwall, this position relationship change can make the first salient be subject to descending or ascending pressure, cause shell fragment to be out of shape gradually and fold or launch, thereby drive the second salient motion.

As preferably, described abnormity push away hole also comprise with described camming surface inwall, be connected can with described the first salient contacts side surfaces spacing lateral part surface inwall, described camming surface inwall and lateral part surface inwall form the rotation control surface of described the first salient.Rotate while contacting with the first salient to the lateral part surface inwall when the lock tube knob like this, it is spacing that the lock tube knob is subject to the lateral part surface inwall, can't be rotated further again, now moved, the second salient is connected with the second hinge hole on stopping locker, lower hurdle tube and only locker interlocking.

As preferably, described the first salient is provided with two, and is symmetricly set on two elastic strip bodies of described shell fragment, and each first salient is to a described rotation control surface should be arranged, and two described rotation control surface join end to end and form described abnormity and push away hole.

As preferably, described the second salient is provided with two, and is symmetricly set on two elastic strip bodies of described shell fragment, and described support tube one end and described upper hurdle tube are movably hinged, and the other end and described lower hurdle tube are movably hinged.

As preferably, described the first salient and the second salient are round point shape or cylindric salient.

As preferably, described lower hurdle tube be provided with can with the elastomeric locking plate that has of described intermediate hurdles tube wall clamping.After folding, locking plate connects with the intermediate hurdles pipe clamp, can keep folded state like this, the resilience that makes progress of the hurdle pipe after preventing from folding.

As preferably, described central siphon, upper hurdle tube and lower hurdle tube are U-shaped pipe, central siphon, upper hurdle tube and lower hurdle tube three form glove hurdle skeleton, described lower hurdle tube comprises two vertical tubes of tiltedly establishing and the transverse tube that is connected described vertical tube, described upper hurdle tube and lower hurdle tube are provided with two, and centered by described central siphon, are symmetrical arranged respectively, and the described body of pulling a cart also includes the trailer pipe, described central siphon is provided with the bar cover, and described upper hurdle tube is connected with central siphon by described bar cover.

The beneficial effect that the utility model brings is, the utility model is simple in structure, simple operation, and its deployed condition and folded state are all very firm, take up room little, can bear than heavy load.

The accompanying drawing explanation

Accompanying drawing 1 is a kind of structural representation of the present utility model;

Accompanying drawing 2 is a kind of side-looking structural representations of the present utility model;

Accompanying drawing 3 is a kind of decomposition texture schematic diagrams of jackknife action of the present utility model;

Accompanying drawing 4 is a kind of structural representations after the utility model folds;

Accompanying drawing 5 is a kind of structural representations of the cross-sectional plane of lock tube knob of the present utility model;

Accompanying drawing 6 is a kind of structural representations when locker is connected with lower hurdle tube of the present utility model only;

Accompanying drawing 7 is a kind of sectional structure schematic diagrams that in accompanying drawing 6, A-A cuts open.

Label declaration: 1, trailer pipe; 2, upper hurdle tube; 3, support tube; 4, lower hurdle tube; 5, central siphon; 6, lock tube knob; 6-1, camming surface inwall; 6-2, lateral part surface inwall; 7, shell fragment; 7-1, the first salient; 7-2, the second salient; 8, locking plate; 9, stop locker; 9-1, the first hinge hole; 9-2, the second hinge hole; 10, bar cover.

The specific embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: the folding of the present embodiment pulled a cart as shown in Fig. 1,2,4,5,6,7, comprise the body of pulling a cart, be arranged on four wheel bodys on the body of pulling a cart, the body of pulling a cart comprises upper hurdle tube 2, lower hurdle tube 4, support tube 3, central siphon 5, trailer pipe 1, lock tube knob 6, loop bar, stops locker 9, shell fragment 7 and locking plate 8.

Upper hurdle tube 2, central siphon 5 and lower hurdle tube 4 are U-shaped pipe, and U-shaped pipe comprises that two vertical tubes are with one-body molded with vertical tube and be connected the transverse tube of two vertical tubes, and central siphon 5, upper hurdle tube 2 and lower hurdle tube 4 threes form glove hurdle skeleton.Upper hurdle tube 2 and lower hurdle tube 4 are provided with two, and centered by central siphon 5, be symmetrical arranged respectively, the equal fixed cover in the two ends of central siphon 5 is connected to bar cover 10, upper hurdle tube 2 overlaps 10 by bar and is connected with central siphon 5, upper hurdle tube 2 is movably articulated in bar and puts, between upper hurdle tube 2 and described lower hurdle tube 4, support tube 3 is installed, support tube 3 one ends and upper hurdle tube 2 are movably hinged, and the other end and lower hurdle tube 4 are movably hinged.Lower hurdle tube 4 comprises two vertical tubes of tiltedly establishing and the transverse tube that is connected vertical tube, is hinged with trailer pipe 1 on transverse tube, on lower hurdle tube 4, also be equipped with can with the elastomeric locking plate 8 of having of intermediate hurdles tube wall clamping.

In the middle part of two vertical tubes of central siphon 5, equal fixed covers are connected to only locker 9, only on locker 9, are shaped with the first hinge hole 9-1 and the second hinge hole 9-2, and lower hurdle tube 4 is movably articulated in and stops on locker 9 by bearing pin and the first hinge hole 9-1 cooperation.

Shell fragment 7 is installed in lower hurdle tube 4, shell fragment 7 comprises two elastic strip bodies in left and right, the the second salient 7-2 that is shaped with the first salient 7-1 on shell fragment 7 and links with the first salient 7-1, so-called interlock, while referring to such an extent that be the first salient 7-1 motion, the second protrusion also is synchronized with the movement.The first salient 7-1 and the second salient 7-2 are provided with two, and all be symmetricly set on two elastic strip bodies of shell fragment 7, two the first salient 7-1 form the effect of the first bearing pin on elastic strip body, two the second salient 7-2 form the effect of the second bearing pin on elastic strip body, the first salient 7-1 and the second salient 7-2 are the cylindrical bump that protrudes from shell fragment 7 surfaces, the appearance that the first salient 7-1 and the second salient 7-2 stretch out lower hurdle tube 4 tube walls.

Be socketed with the lock tube knob 6 of controlling shell fragment 7 opening and closing on lower hurdle tube 4, on lock tube knob 6, be shaped with lower hurdle tube 4 on the abnormity that matches of the first salient 7-1 push away hole.Abnormity pushes away hole and comprises camming surface inwall 6-1 and lateral part surface inwall 6-2, and camming surface inwall 6-1 contacts for same the first salient 7-1, and can control shell fragment 7 opening and closing by contact position between change and the first salient 7-1.Lateral part surface inwall 6-2 is used for and the first salient 7-1 contacts side surfaces spacing to the first salient 7-1.Camming surface inwall 6-1 and lateral part surface inwall 6-2 form the rotation control surface of described the first salient 7-1.Each first salient 7-1 is to a rotation control surface should be arranged, and two rotation control surface join end to end and form a complete abnormity and push away hole.The appearance of lock tube knob 6 can arrange word and put on " LOCK " " UNLOCK " and show lower hurdle tube 4 and the real-time annexation of locker 9 only.

The folding hurdle pipe of pulling a cart of the present embodiment can be understood as hollow tubular and solid tubes.During solid tubes, the hurdle pipeline section of lower hurdle tube 4 mounting elastic sheets 7 is interpreted as hollow section if.

As shown in Figure 3, when folding, rotation lock tube knob 6 shows " UNLOCK " state to side, then upper hurdle tube 2 is applied to downward power F, and simultaneously by 1 rotation of trailer pipe, make upper hurdle tube 2 and lower hurdle tube 4 fold to the intermediate hurdles pipe, until the locking plate 8 on lower hurdle tube 4 connects with the intermediate hurdles pipe clamp, folding folding is complete.

Below only with regard to the utility model preferred embodiment, be described, but can not be interpreted as it is the restriction to the utility model protection domain.The utility model not only is confined to above embodiment, and its concrete structure or shape allow to change.In a word, protection domain of the present utility model should comprise the apparent conversion of those corresponding those of ordinary skills or substitute and remodeling.

Claims

1. folding pulling a cart, it is characterized in that, comprise the body of pulling a cart, be arranged on the wheel body on the described body of pulling a cart, the body of pulling a cart comprises upper hurdle tube, lower hurdle tube, support tube and central siphon, described upper hurdle tube is movably articulated on described central siphon, be provided with described support tube between upper hurdle tube and described lower hurdle tube, be connected with only locker on central siphon, lower hurdle tube is movably articulated on described only locker, described lower hurdle tube is provided with shell fragment and controls the lock tube knob of described shell fragment opening and closing, described shell fragment at least comprises the first salient and the second salient linked with described the first salient, the first salient and the second salient all protrude from the shell fragment surface, described the first salient and described lock tube knob match, described only locker is provided with the second hinge hole matched with described the second salient.

2. folding pulling a cart according to claim 1, is characterized in that, described shell fragment is connected in described lower hurdle tube, and described the first salient and the second salient stretch out the tube wall of lower hurdle tube.

3. folding pulling a cart according to claim 1, is characterized in that, described shell fragment comprises two elastic strip bodies in left and right, and described salient is arranged on elastic strip body.

4. according to claim 3 folding pulled a cart, it is characterized in that, described lock tube knob sleeve is connected on described lower hurdle tube, the abnormity that the lock tube knob is provided with for matching with described the first salient pushes away hole, described abnormity push away hole comprise with described the first salient contact, and can by change and the first salient between contact position control the camming surface inwall of shell fragment opening and closing.

5. according to claim 4 folding pulled a cart, it is characterized in that, described abnormity push away hole also comprise with described camming surface inwall, be connected can with described the first salient contacts side surfaces spacing lateral part surface inwall, described camming surface inwall and lateral part surface inwall form the rotation control surface of described the first salient.

6. according to claim 5 folding pulled a cart, it is characterized in that, described the first salient is provided with two, and be symmetricly set on two elastic strip bodies of described shell fragment, each first salient is to a described rotation control surface should be arranged, and two described rotation control surface join end to end and form described abnormity and push away hole.

7. according to claim 6 folding pulled a cart, it is characterized in that, described the second salient is provided with two, and is symmetricly set on two elastic strip bodies of described shell fragment, described support tube one end and described upper hurdle tube are movably hinged, and the other end and described lower hurdle tube are movably hinged.

8. folding pulling a cart according to claim 1, is characterized in that, described the first salient and the second salient are round point shape or cylindric salient.

9. folding pulling a cart according to claim 1, is characterized in that, described lower hurdle tube be provided with can with the elastomeric locking plate that has of described intermediate hurdles tube wall clamping.

10. according to claim 1 folding pulled a cart, it is characterized in that, described central siphon, upper hurdle tube and lower hurdle tube are U-shaped pipe, central siphon, upper hurdle tube and lower hurdle tube three form glove hurdle skeleton, described lower hurdle tube comprises two vertical tubes of tiltedly establishing and the transverse tube that is connected described vertical tube, described upper hurdle tube and lower hurdle tube are provided with two, and centered by described central siphon, be symmetrical arranged respectively, the described body of pulling a cart also includes the trailer pipe, described central siphon is provided with the bar cover, and described upper hurdle tube is connected with central siphon by described bar cover.