CN107054418A - Four-wheel foldable trailer - Google Patents
Four-wheel foldable trailer Download PDFInfo
- Publication number
- CN107054418A CN107054418A CN201611207685.2A CN201611207685A CN107054418A CN 107054418 A CN107054418 A CN 107054418A CN 201611207685 A CN201611207685 A CN 201611207685A CN 107054418 A CN107054418 A CN 107054418A
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- China
- Prior art keywords
- bearing surface
- hole
- connection
- luggage carrier
- wheel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/02—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible
- B62B3/022—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving parts being adjustable, collapsible, attachable, detachable or convertible folding down the body to the wheel carriage or by retracting projecting parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B1/00—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
- B62B1/02—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the wheel axis is disposed between the load and the handles
- B62B1/04—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the wheel axis is disposed between the load and the handles involving parts being adjustable, collapsible, attachable, detachable, or convertible
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/06—Hand moving equipment, e.g. handle bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/12—Collapsible wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B2206/00—Adjustable or convertible hand-propelled vehicles or sledges
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of Four-wheel foldable trailer, including front frame component, Rear frame component and coupling mechanism；The front frame component includes preceding luggage carrier, two front wheel assemblies, be arranged on before luggage carrier front end front apron and the pull bar that is arranged on front apron；Connection boss before being respectively provided with the plate body at front apron bottom left and right sides end, front arc transition face of each preceding connection boss provided with gathering bearing surface and preceding expansion bearing surface before front-axle hole, preceding gathering bearing surface, preceding expansion bearing surface and connection；The distance of the central axis of front-axle hole and preceding expansion bearing surface is more than the distance of the central axis and preceding gathering bearing surface；Expansion bearing surface is parallel to plane where front apron before each, and each bearing surface that draws in is perpendicular to plane where front apron；Front apron bottom is provided between the rotating junction with pin-and-hole, two clamps of the top provided with protrusion of front apron, two clamps in the other end provided with preceding connection boss and forms a clip slot.The present invention is easy to carry and deposited.
Description
Technical field
The present invention relates to trailer technical field, more particularly to a kind of Four-wheel foldable trailer.
Background technology
People are commonly used when article is carried in shopping and arrive four-wheel trailer, and strength, but four-wheel at present can be saved for user
Trailer volume is generally larger, it is impossible to folds and draws in, inconvenient to carry, space-consuming is also very big during storage.
Patent document CN202186404U discloses a kind of foldable luggage trolley, and the car includes telescopic vehicle frame, its underpart
Provided with the cylindrical pull bar being hinged with luggage truck weight tray, the cylindrical pull bar top is provided with first annular groove,
First annular groove lower surface is provided with the first spiral-guide face；Weight tray is fitted after folding with vehicle frame, and it hangs down after deploying with vehicle frame
It is straight to set, for carrying luggage；Weight tray is connected side with vehicle frame and erected provided with the wheel being fixedly connected with the weight tray
Direct Travel control piece；Wheel stand has on the second annular groove that socket is adapted to the cylindrical pull bar, the second annular groove
End face is provided with a fixed rotation of taking a seat in the second spiral-guide face being adapted with the first spiral-guide face, the second annular groove
Torque spring；Pull bar is arranged in the second annular groove vertically, and the axis hole of pull bar bottom is socketed in vertical road wheel Stroke Control
In the axle of part；When weight tray deploys, the vertical road wheel formation control piece is to the second annular groove formation pushing tow, described first
Vertical road wheel is guided under the collective effect in spiral-guide face and the second spiral-guide face to move up and to both sides outward turning deploy, and carries bottom
When plate is folded, wheel inward turning in the presence of the rotary torsion spring is reclaimed to be moved down vertically simultaneously；Vehicle wheel edge after folding
Protrude from the weight tray bottom edge after folding.
The patent document is described in detail the detailed mechanism and operation principle of collapsible wheel, but this kind of foldable luggage trolley
Due to being the push-and-pull car of only two-wheeled, carrying dynamics is smaller, it is impossible to is widely used in factory floor and uses.
The content of the invention
Overall space-consuming can be reduced it is an object of the invention to provide one kind, consequently facilitating the four-wheel folding for carrying and depositing
Stacked trailer.
Realizing the technical scheme of the object of the invention is：A kind of Four-wheel foldable trailer, including front frame component, Rear frame group
Part and the coupling mechanism for coupling front frame component and Rear frame component；The front frame component include preceding luggage carrier, two
Front wheel assemblies, the front apron for being arranged on preceding luggage carrier front end and the pull bar being arranged on front apron；Front apron bottom or so two
Connection boss before being respectively provided with the plate body of side, each preceding connection boss is abutted provided with front-axle hole, preceding gathering bearing surface, preceding expansion
Draw the front arc transition face of bearing surface and preceding expansion bearing surface before face and connection in；The central axis of front-axle hole and preceding expansion
The distance of bearing surface is more than the distance of the central axis and preceding gathering bearing surface；Expansion bearing surface is parallel to where front apron before each
Plane, each bearing surface that draws in is perpendicular to plane where front apron；It is characterized in that：Front apron bottom is provided with preceding connection boss
The other end is provided between the rotating junction with pin-and-hole, two clamps of the top provided with protrusion of front apron, two clamps and forms one
Clip slot；Rear frame component includes rear luggage carrier, two rear wheel assemblies, the rear baffle for being arranged on rear luggage carrier rear end and for even
Connect two connectors of rear baffle and rear luggage carrier；Afterwards the left and right sides end of luggage carrier rear end be respectively provided with one it is rearwardly projecting after
Traveller, each rear traveller is provided with multiple rear spacing teeth groove provided with limiting block platform after annular, the rear end of each rear limiting block platform；It is sliding after each
The rear end of post is provided with rear pin-and-hole；The front end of each connector provided with the first pivoted hole, afterwards draw in bearing surface, afterwards expansion bearing surface, with
And draw the rear arc transition face of bearing surface and rear expansion bearing surface after connection in；Each connector with corresponding one after traveller by wearing
The bearing pin for crossing the first pivoted hole and rear pin-and-hole rotates connection, and the distance of the central axis of the first pivoted hole and rear expansion bearing surface is big
In the central axis and the rear distance for drawing bearing surface in；Expansion bearing surface is parallel to plane where rear baffle after each, each rear gathering
Bearing surface is perpendicular to plane where rear baffle；The rear end of each connector, which is provided with, to be used to rotate the be connected second pivot joint with rear baffle
Hole, gathering load-carrying surface and expansion load-carrying surface, draw load-carrying surface in and are located at side of second pivoted hole away from the first pivoted hole, expansion is held
Power face is located at the second pivoted hole close to the side of the first pivoted hole；Each rear wheel assemblies include with rear sleeve rear wheel frame, after
Torsion spring and the rear wheel being rotatably arranged on rear wheel frame；The front end of each rear sleeve is provided with the rear limit being engaged with each rear spacing teeth groove
Position double wedge；Rear sleeve is set in after corresponding one on traveller, rear torsion spring be set in it is corresponding after on traveller, and positioned at rear sleeve it
It is interior；Rear baffle connects boss after being provided with two, it is each after connection boss provided with rear axis hole and along rear luggage carrier horizontal direction evagination
Load protrusive board；Connection boss and a corresponding connector are rotated by the bearing pin through rear axis hole and the second pivoted hole after each connects
Connect；Load protrusive board with it is rear connection boss around the second pivoted hole rotate during, the gathering load of connector can be connected to
On face and expansion load-carrying surface, and then rotated with follower link；Coupling mechanism includes the left and right sides of luggage carrier rear end before being arranged on
Two preceding coupling bars at end, the locating wheel being fixedly installed on each preceding coupling bar, the left and right sides for being arranged on rear luggage carrier front end
Coupling bar, the connection protrusive board being fixedly installed on each rear coupling bar, the coupling bar and can be along right and left after two after two of end
To the axostylus axostyle moved back and forth, two annular gear platforms, the screw threads for providing reseting elasticity for axostylus axostyle being fixedly installed on axostylus axostyle
Spring and the attachment bolt component that each rear coupling bar and a corresponding locating wheel are connected for rotating；The edge of each locating wheel
Provided with two arc shaped locating notches being centrosymmetric, each annular gear platform is embedding during being moved back and forth with axostylus axostyle
Enter or remove in a corresponding locating notch；The front frame component and Rear frame component can rotate 180 around attachment bolt component
Overlapped after degree；The bottom of pull bar and the rotating junction of front apron, which are rotated, to be connected, the middle part of pull bar can clamping connection between two clamps.
It is connected in the use of the present invention, being rotated by rotating junction with external pull bar, when needing to use pull bar to tow,
Pull bar is removed from two clamps and be can be used；When storage and carrying, pull bar is caught between two clamps；Effectively reduce
Overall space-consuming, consequently facilitating carrying and depositing.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of the present invention；
Fig. 2 is a kind of side view of front apron shown in Fig. 1；
Fig. 3 is that a kind of stereochemical structure when the Four-wheel foldable trailer being made of front apron shown in Fig. 1 is in deployed condition is shown
It is intended to；
Fig. 4 is a kind of dimensional structure diagram of front frame component in trailer shown in Fig. 3；
Fig. 5 is a kind of side view of front frame component shown in 4；
Fig. 6 is a kind of explosive view of front frame component shown in Fig. 4；
Fig. 7 be front frame component shown in Fig. 4 from another angle when a kind of explosive view；
Fig. 8 is a kind of dimensional structure diagram of Rear frame component in trailer shown in Fig. 3；
Fig. 9 be Rear frame component shown in Fig. 8 from another angle when a kind of dimensional structure diagram；
Figure 10 is a kind of side view of Rear frame component shown in Fig. 8；
Figure 11 is a kind of explosive view of Rear frame component shown in Fig. 8；
Figure 12 is a kind of explosive view of Rear frame component shown in Fig. 9；
Figure 13 is a kind of dimensional structure diagram when trailer shown in Fig. 3 is in flat；
Figure 14 is a kind of dimensional structure diagram of rear baffle in trailer shown in Figure 13；
Figure 15 is a kind of dimensional structure diagram when trailer shown in Fig. 3 is in preliminary folded state；
Figure 16 is a kind of explosive view of rear baffle and connector in Figure 15；
Figure 17 is a kind of side view of trailer shown in Figure 15；
Figure 18 is a kind of structural representation of coupling mechanism in trailer shown in Fig. 3；
Figure 19 is a kind of dimensional structure diagram when trailer shown in Fig. 3 is in completely folded state；
Figure 20 is a kind of side view of trailer shown in Figure 19.
Mark shown in accompanying drawing：Front frame component 1, preceding luggage carrier 11, front sliding column 111, front limit gear platform 112, front limit
Teeth groove 113, preceding pin-and-hole 114, front wheel assemblies 12, anterior cannula 121, front wheel carrier 122, preceding torsion spring 123, front vehicle wheel 124, front limit
Double wedge 125, front apron 13, preceding connection boss 131, front-axle hole 132, preceding gathering bearing surface 133, preceding expansion bearing surface 134, frontal arc
Shape transition face 135, rotating junction 136, clamp 137, pull bar 14, Rear frame component 2, rear luggage carrier 21, rear traveller 211, after
Limiting block platform 212, rear spacing teeth groove 213, rear pin-and-hole 214, rear wheel assemblies 22, rear sleeve 221, rear wheel frame 222, rear torsion spring
223, rear wheel 224, rear spacing double wedge 225, rear baffle 23, rear connection boss 231, rear axis hole 232, load protrusive board 233, connection
Part 24, the first pivoted hole 241 is rear to draw bearing surface 242, rear expansion bearing surface 243, rear arc transition face 244, the second pivoted hole in
245, gathering load-carrying surface 246, expansion load-carrying surface 247, coupling mechanism 3, preceding coupling bar 31, locating wheel 32, locating notch 321, after
Coupling bar 33, couples protrusive board 34, axostylus axostyle 35, annular gear platform 36, screw thread spring 37, attachment bolt component 38, bearing pin 100.
Embodiment
（Embodiment 1）
The present embodiment is a kind of front apron for folding trailer, as shown in Fig. 1 and Fig. 2, the bottom left and right sides of front apron 13
Connection boss 131 before being respectively provided with the plate body at end, it is each before connection boss provided with front-axle hole 132, preceding gathering bearing surface 133, preceding
Deploy the front arc transition face 135 of gathering bearing surface and preceding expansion bearing surface before bearing surface 134 and connection；In front-axle hole
Heart axis is more than the central axis with preceding gathering bearing surface apart from b with preceding expansion bearing surface apart from a；Expansion bearing surface before each
Parallel to plane where front apron, each bearing surface that draws in is perpendicular to plane where front apron；It is characterized in that：Front apron bottom exists
The other end provided with preceding connection boss is provided with the rotating junction 136 with pin-and-hole, two cards of the top provided with protrusion of front apron
A clip slot is formed between plate 137, two clamps.
（Application examples 1）
The application example is a kind of Four-wheel foldable trailer being made of above-described embodiment 1, including front frame component 1, Rear frame
Component 2 and the coupling mechanism 3 for coupling front frame component and Rear frame component.
Concrete structure when the application example is in deployed condition is shown in Fig. 3 to Figure 12, and the front frame component includes preceding loading
Frame 11, two front wheel assemblies 12, be arranged on before luggage carrier front end front apron 13 and the pull bar 14 that is arranged on front apron；
The left and right sides end of preceding luggage carrier front end is respectively provided with a front sliding column 111 protruded forward, and each front sliding column is provided with limit before annular
Position gear platform 112, the front end of each front limit gear platform is provided with multiple front limit teeth groove 113；The front end of each front sliding column is provided with preceding pin-and-hole
114；Each front wheel assemblies include the front wheel carrier 122 with anterior cannula 121, preceding torsion spring 123 and are rotatably arranged on front wheel carrier
Front vehicle wheel 124；The rear end of each anterior cannula is provided with the front limit double wedge 125 being engaged with each front limit teeth groove；Anterior cannula is set in
On a corresponding front sliding column, preceding torsion spring is set on corresponding front sliding column, and within anterior cannula；Front apron is provided with two
It is preceding connection boss 131, it is each before connection boss provided with front-axle hole 132, it is preceding gathering bearing surface 133, it is preceding expansion bearing surface 134, with
And draw the front arc transition face 135 of bearing surface and preceding expansion bearing surface before connection in；As shown in Figure 2, the central axis of front-axle hole
It is more than the central axis with preceding gathering bearing surface apart from b apart from a with preceding expansion bearing surface；It is each before connection boss by through
The bearing pin 100 of front-axle hole and a corresponding preceding pin-and-hole is rotated with front sliding column and is connected；Expansion bearing surface is parallel to front apron institute before each
In plane, each bearing surface that draws in is perpendicular to plane where front apron.
Rear frame component includes rear luggage carrier 21, two rear wheel assemblies 22, is arranged on the rear baffle of rear luggage carrier rear end
23 and for connecting two connectors 24 of rear baffle and rear luggage carrier.
The left and right sides end of luggage carrier rear end is respectively provided with a rearwardly projecting rear traveller 211 afterwards, and each rear traveller is provided with
Limiting block platform 212 after annular, the rear end of each rear limiting block platform is provided with multiple rear spacing teeth groove 213；The rear end of each rear traveller is provided with
Pin-and-hole 214 afterwards；The front end of each connector provided with the first pivoted hole 241, it is rear draw in bearing surface 242, rear expansion bearing surface 243, with
And draw the rear arc transition face 244 of bearing surface and rear expansion bearing surface after connection in；Each connector with corresponding one after traveller lead to
The bearing pin 100 crossed through the first pivoted hole and rear pin-and-hole 214 rotates connection, and the central axis of the first pivoted hole is abutted with rear expansion
The distance in face is more than the central axis and the rear distance for drawing bearing surface in；Expansion bearing surface is parallel to flat where rear baffle after each
Face, each rear bearing surface that draws in is perpendicular to plane where rear baffle；The rear end of each connector is provided with to be used to rotate with rear baffle and is connected
The second pivoted hole 245, draw load-carrying surface 246 and expansion load-carrying surface 247 in, draw load-carrying surface in and be located at the second pivoted hole away from the
The side of one pivoted hole, expansion load-carrying surface is located at the second pivoted hole close to the side of the first pivoted hole；Each rear wheel assemblies include
Rear wheel frame 222, rear torsion spring 223 with rear sleeve 221 and the rear wheel 224 being rotatably arranged on rear wheel frame；Each rear sleeve
Front end is provided with the rear spacing double wedge 225 being engaged with each rear spacing teeth groove；Rear sleeve is set in after corresponding one on traveller, rear to turn round
Spring is set on corresponding rear traveller, and within rear sleeve；Rear baffle, which is provided with after two, connects boss 231, each rear connection
Boss is provided with rear axis hole 232 and the load protrusive board 233 along rear luggage carrier horizontal direction evagination；Connection boss and corresponding one after each
Individual connector is rotated by the bearing pin 100 through rear axis hole and the second pivoted hole and connected；Load protrusive board is with rear connection boss
During the second pivoted hole is rotated, it can be connected in the gathering load-carrying surface of connector and expansion load-carrying surface, and then the company of drive
Fitting is rotated.
As shown in Figure 18, coupling mechanism 3 includes two of the left and right sides end of luggage carrier rear end before being arranged in the application example
Individual preceding coupling bar 31, the locating wheel 32 being fixedly installed on each preceding coupling bar, the left and right sides end for being arranged on rear luggage carrier front end
Two after coupling bar 33, the connection protrusive board 34 being fixedly installed on each rear coupling bar, the coupling bar and can be along left and right after two
Axostylus axostyle 35 that direction is moved back and forth, two be fixedly installed on axostylus axostyle annular gear platforms 36, for providing reseting elasticity for axostylus axostyle
Screw thread spring 37 and the attachment bolt component 38 of each rear coupling bar and a corresponding locating wheel is connected for rotating；It is each fixed
The edge of position wheel is provided with two arc shaped locating notches 321 being centrosymmetric, and each annular gear platform is back and forth moved with axostylus axostyle
In dynamic process, it is embedded in or removes in a corresponding locating notch；The front frame component and Rear frame component can be around connection spiral shells
Bolt assembly 38 is rotated and overlapped after 180 degree.
In the application example, one end of front apron close to preceding connection boss is provided with the rotating junction 136 with pin-and-hole, front
One end two clamps 137 provided with protrusion of the plate away from preceding connection boss；The bottom of pull bar and the rotating junction of front apron are rotated
Connection, the middle part of pull bar can clamping connection between two clamps.
When the application example is in deployed condition, as shown in Fig. 3 to Figure 12, the upper surface of preceding luggage carrier and rear luggage carrier is in
Same plane, preceding luggage carrier and rear luggage carrier are coupled by coupling mechanism, and are embedded in by locating wheel the positioning of corresponding locating wheel
Both are locked in breach.Now in front frame component, preceding expansion of the front apron on preceding luggage carrier, front limit gear platform
Bearing surface 134 is connected on the front end face of anterior cannula 121 parallel to plane where front apron, while also causing after anterior cannula
Each front limit double wedge at end is embedded in corresponding front limit teeth groove, and front limit teeth groove rotates effect so as to have to limit to anterior cannula
Really so that front vehicle wheel now can be rolled and normally towed with realizing perpendicular to plane where preceding luggage carrier.Rear frame component
In, rear baffle is held perpendicular to plane where rear luggage carrier, and the gathering that the rear load protrusive board 233 for connecting boss is connected to connector
On power face 246, the gathering load-carrying surface in this condition, can prevent rear baffle from continuing to rotate forward；Rear exhibition in each connector
Bearing surface 243 is opened parallel to plane where rear baffle, and is connected on the rear end face of corresponding rear sleeve so that rear sleeve front end
Each rear spacing double wedge be embedded in rear spacing teeth groove, rear spacing teeth groove so as to rear sleeve have limitation rotating effect so that
Rear wheel now can be rolled and normally towed with realizing perpendicular to plane where rear luggage carrier.
The application example is in the concrete structure as Figure 13 of flat to shown in Figure 14, under deployed condition shown in Fig. 3, outside
Dynamic rear baffle is pushed to rotate backward around rear axis hole, until load protrusive board 233 is connected in the expansion load-carrying surface 247 of connector, this
When rear baffle upper surface and rear luggage carrier upper surface be in same plane, in the spacing work of the expansion load-carrying surface 247 of connector
Under, it can prevent rear baffle from continuing to rotate backward；Rear baffle can be also served as support board and used by this structure, be effectively increased and dragged
The loaded area of car.
The application example is in the concrete structure as Figure 15 of preliminary folded state to shown in Figure 17, in deployed condition shown in Fig. 3
Under, external force promotes forward rear baffle, because the load protrusive board 233 on rear baffle is connected in the gathering load-carrying surface 246 of connector,
So as to be rotated forward around the first pivoted hole 241 with follower link, until rear gathering bearing surface 242 is flat where rear luggage carrier
Face is simultaneously connected on the rear end face of rear sleeve, is somebody's turn to do because the central axis of the first pivoted hole is more than with the rear distance for deploying bearing surface
Central axis and the rear distance for drawing bearing surface in so that rear sleeve is in the rotation process of connector, bullet of the meeting in rear torsion spring 223
Under power effect, certain distance is slid backward so that removed in the rear spacing teeth groove that rear spacing double wedge slave phase is answered, due to rear limiting tooth
Groove no longer has limitation rotating effect to rear sleeve, so rear sleeve can drive rear wheel frame 222 under the twisting force of rear torsion spring
And rear wheel 224 turn an angle after be connected on the basal surface of rear luggage carrier.In addition, under deployed condition shown in Fig. 3, outside
Power promotes front apron backward, and connection boss 131 rotates backward around front-axle hole 132 before driving, until the preceding bearing surface 133 that draws in is abutted
On the front end face of anterior cannula, due to front-axle hole central axis with it is preceding expansion bearing surface apart from a be more than the central axis with
It is preceding draw in bearing surface apart from b, so during the rotating backward of rear baffle, anterior cannula can slide certain distance forward, make
Obtain front limit double wedge to remove from corresponding front limit teeth groove, because front limit teeth groove not there is limitation to rotate effect anterior cannula
Really, so anterior cannula can drive front wheel carrier and front vehicle wheel to turn an angle before being connected under the twisting force of preceding torsion spring
On the basal surface of luggage carrier.
The application example is in the concrete structure as Figure 19 of completely folded state to shown in Figure 20, is tentatively being folded shown in Figure 15
Under state, axostylus axostyle 35 is pressed so that axostylus axostyle overcomes the reseting elasticity of screw thread spring 37 and moved a certain distance so that be fixed on axle
Annular gear platform on bar is removed from a corresponding locating notch 321, so as to folding carrier and rear luggage carrier, works as handle
When preceding luggage carrier or rear luggage carrier rotation 180 degree make it that both overlap, namely cause the basal surface adjoining rear car of front frame component
After the basal surface of frame component, axostylus axostyle is unclamped, axostylus axostyle is moved and resetted under the reseting elasticity of screw thread spring 37 so that annular gear platform
Again in another embedded corresponding locating notch 321, preceding luggage carrier and rear luggage carrier are locked so that both will not divide themselves
Open.
In addition, the application example also has a characteristic, exactly after attachment bolt component 38 is pulled down, front frame component is with after
Chassis assembly can independently turn into two-wheeled folding trailer；For front frame component, pull bar, which continues to be used as, tows holding rod,
Preceding luggage carrier continues to be used as luggage carrier；But be using the axostylus axostyle in Rear frame component as towing for Rear frame component
Holding rod, rear baffle is used as support board.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this
The restriction of the embodiment of invention.For those of ordinary skill in the field, on the basis of the above description can be with
Make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And these belong to
Among the obvious changes or variations that the spirit of the present invention is extended out is still in protection scope of the present invention.
Claims (1)
1. a kind of Four-wheel foldable trailer, including front frame component, Rear frame component and for coupling front frame component and rear car
The coupling mechanism of frame component；The front frame component includes preceding luggage carrier, two front wheel assemblies, be arranged on before luggage carrier front end
Front apron and the pull bar that is arranged on front apron；Connection boss before being respectively provided with the plate body at front apron bottom left and right sides end,
Connection boss draws bearing surface and preceding exhibition in before being provided with front-axle hole, preceding gathering bearing surface, preceding expansion bearing surface and connection before each
Open the front arc transition face of bearing surface；The distance of the central axis of front-axle hole and preceding expansion bearing surface is more than the central axis with before
Draw the distance of bearing surface in；Expansion bearing surface is parallel to plane where front apron before each, and each bearing surface that draws in is perpendicular to front apron
Place plane；It is characterized in that：Front apron bottom is provided with the rotation with pin-and-hole in the other end provided with preceding connection boss and connected
A clip slot is formed between portion, two clamps of the top provided with protrusion of front apron, two clamps；Rear frame component include rear luggage carrier,
Two rear wheel assemblies, the rear baffle for being arranged on rear luggage carrier rear end and two connections for connecting rear baffle and rear luggage carrier
Part；The left and right sides end of luggage carrier rear end is respectively provided with a rearwardly projecting rear traveller afterwards, and each rear traveller is provided with limit after annular
Position gear platform, the rear end of each rear limiting block platform is provided with multiple rear spacing teeth groove；The rear end of each rear traveller is provided with rear pin-and-hole；Each connector
Front end drawn in provided with the first pivoted hole, afterwards and draw bearing surface after bearing surface, afterwards expansion bearing surface and connection in and rear expansion is supported
The rear arc transition face of junction；Each connector with corresponding one after traveller pass through through the first pivoted hole and rear pin-and-hole bearing pin turn
The distance of dynamic connection, the central axis of the first pivoted hole and expansion bearing surface afterwards is more than the central axis and rear gathering bearing surface
Distance；Expansion bearing surface is parallel to plane where rear baffle after each, and each rear bearing surface that draws in is perpendicular to plane where rear baffle；Respectively
The rear end of connector, which is provided with, to be used to rotate the second pivoted hole being connected with rear baffle, draws load-carrying surface in and expansion load-carrying surface, is drawn in
Load-carrying surface is located at side of second pivoted hole away from the first pivoted hole, and expansion load-carrying surface is located at the second pivoted hole close to the first pivot joint
The side in hole；Each rear wheel assemblies include rear wheel frame, rear torsion spring and the rear car being rotatably arranged on rear wheel frame with rear sleeve
Wheel；The front end of each rear sleeve is provided with the rear spacing double wedge being engaged with each rear spacing teeth groove；Rear sleeve is set in after corresponding one
On traveller, rear torsion spring is set on corresponding rear traveller, and within rear sleeve；Rear baffle connects boss after being provided with two,
Connection boss is provided with rear axis hole and the load protrusive board along rear luggage carrier horizontal direction evagination after each；Boss is connected after each and corresponding
One connector is rotated by the bearing pin through rear axis hole and the second pivoted hole and connected；Load protrusive board with it is rear connection boss around
During second pivoted hole is rotated, it can be connected in the gathering load-carrying surface of connector and expansion load-carrying surface, and then drive connection
Part is rotated；Coupling mechanism includes two preceding coupling bars at the left and right sides end of luggage carrier rear end before being arranged on, is fixedly installed on respectively
Locating wheel on preceding coupling bar, be arranged on coupling bar after two of the left and right sides end of rear luggage carrier front end, be fixedly installed on it is each
Connection protrusive board rear on coupling bar, after two coupling bar and can move back and forth in left-right direction axostylus axostyle, be fixedly installed on axle
Two on bar annular gear platforms, the screw thread spring for providing reseting elasticity for axostylus axostyle and for rotate connection it is each after connection
The attachment bolt component of bar and a corresponding locating wheel；The edge of each locating wheel, which is provided with two arc shapeds being centrosymmetric, to be determined
Position breach, each annular gear platform is embedded in or removed in a corresponding locating notch during being moved back and forth with axostylus axostyle；It is described
Front frame component and Rear frame component can be rotated after 180 degree around attachment bolt component to be overlapped；The bottom of pull bar and turning for front apron
Rotation connection rotates connection, the middle part of pull bar can clamping connection between two clamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207685.2A CN107054418A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310378726.4A CN103407475B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201611207685.2A CN107054418A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310378726.4A Division CN103407475B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107054418A true CN107054418A (en) | 2017-08-18 |
Family
ID=49600539
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611209602.3A Withdrawn CN106926874A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
| CN201611207685.2A Withdrawn CN107054418A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201310378726.4A Active CN103407475B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201611207731.9A Withdrawn CN106741058A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611209602.3A Withdrawn CN106926874A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310378726.4A Active CN103407475B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201611207731.9A Withdrawn CN106741058A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106926874A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434160A (en) * | 2017-07-25 | 2017-12-05 | 滁州卷烟材料厂 | A kind of portable cigarette material carrying conveyer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567470B1 (en) * | 1984-07-12 | 1987-01-30 | Ampafrance | FOLDING TROLLEY |
| JPH0651471B2 (en) * | 1989-04-12 | 1994-07-06 | 高男 齊藤 | Folding trolley |
| CN2166052Y (en) * | 1993-05-07 | 1994-05-25 | 拱祺兴业有限公司 | Hand-cart |
| US20020105169A1 (en) * | 2001-02-02 | 2002-08-08 | Gary-Michael Dahl | Lightweight convertible transport cart |
| CN2815807Y (en) * | 2005-12-16 | 2006-09-13 | 武汉箕星制冷有限公司 | Light transfer vehicle |
| CN201052781Y (en) * | 2007-04-24 | 2008-04-30 | 煜益实业股份有限公司 | Mobile handcart after being folded |
| CN201046713Y (en) * | 2007-04-26 | 2008-04-16 | 煜益实业股份有限公司 | Handle collapsible push-car structure |
| CN201932204U (en) * | 2010-11-30 | 2011-08-17 | 无极县烟草专卖局 | Carrier of cigarette circulating box |
| CN202186404U (en) * | 2011-06-16 | 2012-04-11 | 黄怀高 | Foldable luggage cart |
| US8602444B2 (en) * | 2011-12-09 | 2013-12-10 | Seville Classics Inc. | Foldable hand cart |
-
2013
- 2013-08-27 CN CN201611209602.3A patent/CN106926874A/en not_active Withdrawn
- 2013-08-27 CN CN201611207685.2A patent/CN107054418A/en not_active Withdrawn
- 2013-08-27 CN CN201310378726.4A patent/CN103407475B/en active Active
- 2013-08-27 CN CN201611207731.9A patent/CN106741058A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN106741058A (en) | 2017-05-31 |
| CN106926874A (en) | 2017-07-07 |
| CN103407475A (en) | 2013-11-27 |
| CN103407475B (en) | 2017-07-21 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170818 |