CN105946921A - Four-wheel folding trailer - Google Patents
Four-wheel folding trailer Download PDFInfo
- Publication number
- CN105946921A CN105946921A CN201610327136.2A CN201610327136A CN105946921A CN 105946921 A CN105946921 A CN 105946921A CN 201610327136 A CN201610327136 A CN 201610327136A CN 105946921 A CN105946921 A CN 105946921A
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- Prior art keywords
- wheel
- bearing surface
- backboard
- load
- hole
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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
- 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
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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
-
- 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
-
- 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
- B62B2205/006—Hand-propelled vehicles or sledges being foldable or dismountable when not in use dismountable
-
- 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
- B62B2205/02—Hand-propelled vehicles or sledges being foldable or dismountable when not in use foldable widthwise
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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
- 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
- B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
- B62B2205/30—Detachable, retractable or collapsible load supporting means
- B62B2205/32—Shelves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention discloses a four-wheel folding trailer. The four-wheel folding trailer comprises a front frame component, a rear frame component and a linking mechanism, wherein the front frame component comprises a front carrier, a front wheel component, a front baffle and a pull rod; the rear frame component comprises a rear carrier, a rear wheel component, a rear baffle and a connecting piece; the linking mechanism comprises two front linking rods, locating wheels, two rear linking rods, linking convex plates, shaft rods, annular stopping platforms, threaded springs and linking bolt components; two centrosymmetric arc locating notches are formed in the edge of each locating wheel; each annular stopping platform is embedded into or removed from one corresponding locating notch in the process of moving with the shaft rod in a reciprocating process; and the front frame component and the rear frame component can be superimposed after rotating for 180 DEG around the linking bolt components. The four-wheel folding trailer disclosed by the invention can be folded and is convenient to carry.
Description
Technical field
The present invention relates to trailer technical field, particularly relate to a kind of Four-wheel foldable trailer.
Background technology
People are commonly used to four-wheel trailer when shopping carrying article, can be for user saving strength, but current four-wheel
Trailer volume is the biggest, it is impossible to folds and draws in, inconvenient to carry, takes up room the biggest when depositing.
Patent documentation CN202186404U discloses a kind of foldable luggage trolley, and this car includes telescopic vehicle frame, its underpart
Being provided with the cylindrical push-pull bar being hinged with luggage truck weight tray, described cylindrical push-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 with vehicle frame after folding, and it hangs down with vehicle frame after launching
Straight setting, is used for carrying luggage；Weight tray is connected side and is provided with and fixes the wheel that is connected with described weight tray and erect with vehicle frame
Direct Travel control piece；Wheel stand has and the second cannelure of described cylindrical push-pull bar adaptation socket, on the second cannelure
End face is provided with the second spiral-guide face suitable with described first spiral-guide face, a fixing rotation of taking a seat in the second cannelure
Torque spring；Push-pull bar is vertically arranged in the second cannelure, and the shaft hole sleeve of push-pull bar bottom is connected on vertical road wheel Stroke Control
In the axle of part；When weight tray launches, described vertical road wheel forms control piece and the second cannelure is formed pushing tow, described first
The common effect in spiral-guide face and the second spiral-guide face lower guiding is moved on vertical road wheel and is launched to both sides outward turning, carries the end
When plate folds, wheel inward turning under the effect of described rotary torsion spring reclaims and vertically moves down simultaneously；Vehicle wheel edge after folding
Protrude from edge at the bottom of the weight tray after folding.
Detailed mechanism and the operation principle of collapsible wheel described in detail by this patent documentation, but this kind of foldable luggage trolley
Owing to being the push-and-pull vehicle of only two-wheeled, carrying dynamics is less, it is impossible to be widely used in factory floor use.
Summary of the invention
It is an object of the invention to provide one can fold, consequently facilitating the Four-wheel foldable trailer carried.
The technical scheme realizing the object of the invention is: a kind of Four-wheel foldable trailer, including front frame assembly, Rear frame group
Part and for coupling the coupling mechanism of front frame assembly and Rear frame component；It is characterized in that: front frame assembly includes front loading
Frame, two front wheel assemblies, the front apron being arranged on front luggage carrier front end and the pull bar being arranged on front apron；Rear frame component
Including rear luggage carrier, two rear wheel assemblies, be arranged on rear luggage carrier rear end backboard and for connect backboard and after
Two connectors of luggage carrier；Coupling mechanism include being arranged on the left and right sides end of front luggage carrier rear end two front coupling bars,
Coupling bar after the location wheel that is fixedly installed on each front coupling bar, be arranged on rear luggage carrier front end two of left and right sides end,
Be fixedly installed on each rear coupling bar couple flange, run through after two coupling bar the axostylus axostyle that can move back and forth in left-right direction,
Two annulars being fixedly installed on axostylus axostyle keep off platforms, for providing the screw thread spring of reseting elasticity for axostylus axostyle and for the company of rotation
Connect each rear coupling bar and the attachment bolt assembly of a corresponding location wheel；The edge of each location wheel is provided with two be centrosymmetric
Individual arc shaped locating notch, each annular gear platform, during moving back and forth along with axostylus axostyle, embeds or removes a corresponding location
In breach；Described front frame assembly and Rear frame component can overlap after attachment bolt assembly rotates 180 degree；Rear luggage carrier rear end
Left and right sides end be respectively provided with a rearwardly projecting rear traveller, each rear traveller is provided with limiting block platform after annular, each after the most spacing
The rear end of gear platform is provided with multiple rear spacing teeth groove；The rear end of each rear traveller is provided with rear pin-and-hole；The front end of each connector is provided with first
Pivoted hole, afterwards draw in bearing surface, rear launch bearing surface and connect after draw bearing surface and the rear rear arc mistake launching bearing surface in
Cross face；Each connector with corresponding one after traveller by being rotationally connected through the bearing pin of the first pivoted hole and rear pin-and-hole, the first pivot
Connect the central axis in hole with the distance of rear expansion bearing surface more than this central axis and the distance of rear gathering bearing surface；Launch after each
Bearing surface is parallel to backboard place plane, and each rear bearing surface that draws in is perpendicular to backboard place plane；The rear end of each connector
It is provided with the second pivoted hole for being rotationally connected with backboard, draws load-carrying surface in and launch load-carrying surface, draw load-carrying surface in and be positioned at the
Two pivoted holes, away from the side of the first pivoted hole, launch load-carrying surface and are positioned at second pivoted hole side close to the first pivoted hole；Respectively
Rear wheel assemblies includes having the rear wheel that the rear wheel frame of rear sleeve, rear torsion spring and rotation are arranged on rear wheel frame；Each rear sleeve
Front end be provided with and be each after the rear spacing double wedge that matches of spacing teeth groove；Rear sleeve be set in corresponding one after on traveller, turn round afterwards
Spring be set in corresponding after on traveller, and within being positioned at rear sleeve；Backboard connects boss after being provided with two, each after connect boss
It is provided with rear axis hole and the load flange along rear luggage carrier horizontal direction evagination；Connect boss after each and a corresponding connector leads to
Cross the bearing pin through rear axis hole and the second pivoted hole to be rotationally connected；Load flange is turning around the second pivoted hole along with rear connection boss
During Dong, the gathering load-carrying surface of connector can be connected to and launch in load-carrying surface, and then band follower link rotates；Try hard to recommend outward
Dynamic backboard rotates backward around rear axis hole, until load flange is connected in the expansion load-carrying surface of connector, now on backboard
Surface is in same plane, under the position-limiting action of the expansion load-carrying surface of connector, after can preventing with the upper surface of rear luggage carrier
Baffle plate continues to rotate backward；The left and right sides end of front luggage carrier front end is respectively provided with a front sliding column prominent forward, each front sliding column
Being provided with annular front limit gear platform, the front end of each front limit gear platform is provided with multiple front limit teeth groove；The front end of each front sliding column is provided with
Front pin-and-hole；Each front wheel assemblies includes having the front vehicle wheel that the front wheel carrier of anterior cannula, front torsion spring and rotation are arranged on front wheel carrier；
The rear end of each anterior cannula is provided with the front limit double wedge matched with each front limit teeth groove；Anterior cannula is set in a corresponding front sliding column
On, front torsion spring set is located on corresponding front sliding column, and within being positioned at anterior cannula；Front apron connects boss before being provided with two, respectively
Front connection boss draws bearing surface and front expansion in before being provided with front-axle hole, front gathering bearing surface, front expansion bearing surface and connecting
The front arc transition face of bearing surface；The central axis of front-axle hole is more than this central axis with front with distance a of front expansion bearing surface
Draw distance b of bearing surface in；Boss is connected by turning through the bearing pin of front-axle hole and a corresponding front pin-and-hole with front sliding column before each
It is dynamically connected；Launching bearing surface before each and be parallel to front apron place plane, each bearing surface that draws in is perpendicular to front apron place plane；After
In chassis assembly, backboard is perpendicular to rear luggage carrier place plane, and the rear load flange connecting boss is connected to connector
Drawing in load-carrying surface, this gathering load-carrying surface in this condition, prevents backboard from continuing to rotate forward；Rear expansion in each connector
Bearing surface is parallel to backboard place plane, 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 after in spacing teeth groove, rear spacing teeth groove thus rear sleeve is had restriction rotating effect so that now
Rear wheel be perpendicular to rear luggage carrier place plane, can roll with realize normally tow.
The present invention in use, can launch front frame assembly and Rear frame component to use, when depositing, and can be front
Chassis assembly and Rear frame component are folded to closed state, reduce floor space, have advantage easy to carry and store；Separately
Outward, the present invention, after folding and launching, can rely on the elastic force of screw thread spring, drives axostylus axostyle and annular gear platform to automatically reset,
Embed in the upper corresponding locating notch of location wheel, thus lock front frame assembly and Rear frame component, there is use more
Advantage easily.
Accompanying drawing explanation
Fig. 1 is the present invention a kind of perspective view when being in deployed condition；
Fig. 2 is a kind of perspective view of front frame assembly in trailer shown in Fig. 1；
Fig. 3 is a kind of perspective view when another angle is observed of front frame assembly shown in Fig. 2；
Fig. 4 is a kind of side view of front frame assembly shown in Fig. 2；
Fig. 5 is a kind of side view of front apron in front frame assembly shown in 2；
Fig. 6 is a kind of explosive view of front frame assembly shown in Fig. 2；
Fig. 7 is a kind of explosive view of front frame assembly shown in Fig. 3；
Fig. 8 is a kind of perspective view of Rear frame component in trailer shown in Fig. 1；
Fig. 9 is a kind of perspective view when another angle is observed of the Rear frame component shown in Fig. 8；
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 the present invention a kind of perspective view when being in flat；
Figure 14 is a kind of perspective view of backboard in trailer shown in Figure 13；
Figure 15 is the present invention a kind of perspective view when being in preliminary folded state；
Figure 16 is backboard and a kind of explosive view of 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 the present invention；
Figure 19 is the present invention a kind of perspective view when being in completely folded state；
Figure 20 is a kind of side view of trailer shown in Figure 19.
It is labeled as shown in accompanying drawing: front frame assembly 1, front luggage carrier 11, front sliding column 111, front limit gear platform 112, front limit
Teeth groove 113, front pin-and-hole 114, front wheel assemblies 12, anterior cannula 121, front wheel carrier 122, front torsion spring 123, front vehicle wheel 124, front limit
Double wedge 125, front apron 13, front connection boss 131, front-axle hole 132, front gathering bearing surface 133, front 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, backboard 23, the rear boss 231 that connects, rear axis hole 232, load flange 233, connect
Part 24, the first pivoted hole 241, the rear bearing surface 242 that draws in, rear expansion bearing surface 243, rear arc transition face 244, the second pivoted hole
245, gathering load-carrying surface 246, expansion load-carrying surface 247, coupling mechanism 3, front coupling bar 31, location wheel 32, locating notch 321, after
Coupling bar 33, couples flange 34, axostylus axostyle 35, annular gear platform 36, screw thread spring 37, attachment bolt assembly 38, bearing pin 100.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of Four-wheel foldable trailer, including front frame assembly 1, Rear frame component 2 and for coupling front frame
The coupling mechanism 3 of assembly and Rear frame component.
Concrete structure when the present embodiment is in deployed condition is shown in that Fig. 1 to Figure 12, described front frame assembly include front loading
11, two front wheel assemblies 12 of frame, the front apron 13 being arranged on front luggage carrier front end and the pull bar 14 being arranged on front apron；
The left and right sides end of front luggage carrier front end is respectively provided with a front sliding column 111 prominent forward, and each front sliding column limits before being provided with 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 front pin-and-hole
114；Each front wheel assemblies includes that having the front wheel carrier 122 of anterior cannula 121, front torsion spring 123 and rotation is 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 matched with each front limit teeth groove；Anterior cannula is set in
On a corresponding front sliding column, front torsion spring set is located on corresponding front sliding column, and within being positioned at anterior cannula；Front apron is provided with two
Front connection boss 131, each before connect boss be provided with front-axle hole 132, front gathering bearing surface 133, front expansion bearing surface 134, with
And before connecting, draw bearing surface and the front arc transition face 135 of front expansion bearing surface in；As shown in Figure 5, the central axis of front-axle hole
With distance a of front expansion bearing surface more than this central axis and distance b of front gathering bearing surface；Each before connect boss by through
The bearing pin 100 of front-axle hole and a corresponding front pin-and-hole is rotationally connected with front sliding column；Launch bearing surface before each and be parallel to front apron institute
In plane, each bearing surface that draws in is perpendicular to front apron place plane.
Rear frame component includes 21, two rear wheel assemblies 22 of rear luggage carrier, is arranged on the backboard of rear luggage carrier rear end
23 and for connecting two connectors 24 of backboard and rear luggage carrier.
The left and right sides end of rear luggage carrier rear end is respectively provided with a rearwardly projecting rear traveller 211, 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
Rear pin-and-hole 214；
The front end of each connector is provided with the first pivoted hole 241, rear gathering bearing surface 242, rear expansion bearing surface 243 and connects
Rear gathering bearing surface and the rear arc transition face 244 of rear expansion bearing surface；Each connector with corresponding one after traveller by through
The bearing pin 100 of the first pivoted hole and rear pin-and-hole 214 is rotationally connected, the central axis of the first pivoted hole and rear expansion bearing surface away from
From the distance more than this central axis Yu rear gathering bearing surface；Launch bearing surface after each and be parallel to backboard place plane, each after
Draw bearing surface in and be perpendicular to backboard place plane；The rear end of each connector is provided with the second pivot for being rotationally connected with backboard
Connect hole 245, draw load-carrying surface 246 in and launch load-carrying surface 247, draw load-carrying surface in and be positioned at the second pivoted hole away from the first pivoted hole
Side, launch load-carrying surface be positioned at second pivoted hole side close to the first pivoted hole；Each rear wheel assemblies includes having rear enclosure
The rear wheel 224 that the rear wheel frame 222 of pipe 221, rear torsion spring 223 and rotation are arranged on rear wheel frame；The front end of each rear sleeve is provided with
The rear spacing double wedge 225 matched with each rear spacing teeth groove；Rear sleeve be set in corresponding one after on traveller, rear torsion spring set is located at
After corresponding on traveller, and within being positioned at rear sleeve；Backboard connects boss 231 after being provided with two, set on boss each rear connection
There are rear axis hole 232 and the load flange 233 along rear luggage carrier horizontal direction evagination；Boss and a corresponding connector is connected after each
It is rotationally connected by the bearing pin 100 through rear axis hole and the second pivoted hole；Load flange is along with rear connection boss is around the second pivot
During connecing hole rotation, the gathering load-carrying surface of connector can be connected to and launch in load-carrying surface, and then band follower link rotates.
As shown in Figure 18, in the present embodiment, coupling mechanism 3 includes being arranged on the two of the left and right sides end of front luggage carrier rear end
Individual front coupling bar 31, the location wheel 32 being fixedly installed on each front coupling bar, it is arranged on the left and right sides end of rear luggage carrier front end
Two after coupling bar 33, the connection flange 34 being fixedly installed on each rear coupling bar, run through two after coupling bar can be along left and right
Axostylus axostyle 35 that direction moves 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 for be rotationally connected each rear coupling bar and corresponding one location wheel attachment bolt assembly 38；Each fixed
The edge of position wheel is provided with two the arc shaped locating notches 321 being centrosymmetric, and each annular gear platform is back and forth moving along with axostylus axostyle
During Dong, embed or remove in a corresponding locating notch；Described front frame assembly and Rear frame component can be around coupling spiral shell
Bolt assembly 38 overlaps after rotating 180 degree.
In the present embodiment, front apron is provided with the rotating junction 136 with pin-and-hole, front close to one end of front connection boss
Plate is provided with two clamps 137 of protrusion away from one end of front connection boss；The bottom of pull bar rotates with the rotating junction of front apron
Connect, the middle part of pull bar can clamping connection between two clamps.In concrete practice, it is possible to pull bar is fixedly installed on front apron.
When the present embodiment is in deployed condition, as shown in Fig. 1 to Figure 12, the upper surface of front luggage carrier and rear luggage carrier is in
Same plane, front luggage carrier and rear luggage carrier are coupled by coupling mechanism, and are embedded the location of corresponding location wheel by location wheel
Both are locked by breach.Now in front frame assembly, front apron is perpendicular to front luggage carrier, the front expansion on front limit gear platform
Bearing surface 131 is parallel to front apron place plane, and is connected on the front end face of anterior cannula 121, after also making anterior cannula simultaneously
End each front limit double wedge be embedded in corresponding front limit teeth groove, front limit teeth groove thus anterior cannula is had restriction rotate effect
Really so that front vehicle wheel now is perpendicular to front luggage carrier place plane, can roll to realize normally towing.Rear frame component
In, backboard is perpendicular to rear luggage carrier place plane, and the gathering that the rear load flange 233 connecting boss is connected to connector is held
On power face 246, this gathering load-carrying surface in this condition, is possible to prevent backboard to continue to rotate forward；Rear exhibition in each connector
Open bearing surface 243 and be parallel to backboard place plane, and be connected on the rear end face of corresponding rear sleeve so that rear sleeve front end
Each after spacing double wedge be embedded in after in spacing teeth groove, rear spacing teeth groove thus rear sleeve is had restriction rotating effect so that
Rear wheel now is perpendicular to rear luggage carrier place plane, can roll to realize normally towing.
The present embodiment is in shown in the concrete structure as Figure 13 to Figure 14 of flat, under deployed condition shown in Fig. 1, outward
Try hard to recommend dynamic backboard to rotate backward around rear axis hole, until load flange 233 is connected in the expansion load-carrying surface 247 of connector, this
Time backboard upper surface and rear luggage carrier upper surface be in same plane, at the spacing work of the expansion load-carrying surface 247 of connector
Under with, can prevent backboard from continuing to rotate backward；This structure can also serve as support board backboard and use, and is effectively increased and drags
The loaded area of car.
The present embodiment is in shown in the concrete structure as Figure 15 to Figure 17 of preliminary folded state, in deployed condition shown in Fig. 1
Under, external force promotes forward backboard, owing to the load flange 233 on backboard is connected in the gathering load-carrying surface 246 of connector,
Thus band follower link rotates forward around the first pivoted hole 241, until rear gathering bearing surface 242 is perpendicular to rear luggage carrier place and puts down
Face is also connected on the rear end face of rear sleeve, owing to the central axis of the first pivoted hole and the distance of rear expansion bearing surface are more than being somebody's turn to do
Central axis and the distance of rear gathering bearing surface so that rear sleeve, can be at the bullet of rear torsion spring 223 in the rotation process of connector
Under power effect, sliding certain distance backward so that rear spacing double wedge removes spacing teeth groove after corresponding, due to rear limiting tooth
Groove no longer has restriction 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.It addition, under deployed condition shown in Fig. 1, outward
Power promotes front apron backward, connects boss 131 and rotate backward around front-axle hole 132, until front gathering bearing surface 133 abuts before driving
On the front end face of anterior cannula, due to front-axle hole central axis and front expansion bearing surface distance a more than this central axis with
Distance b of front gathering bearing surface, so during the rotating backward of backboard, anterior cannula can sliding certain distance forward, make
Obtain front limit double wedge to remove from corresponding front limit teeth groove, owing to front limit teeth groove does not has restriction rotation effect to 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 front torsion spring
On the basal surface of luggage carrier.
The present embodiment is in shown in the concrete structure as Figure 19 to Figure 20 of completely folded state, is tentatively folding shown in Figure 15
Under state, press axostylus axostyle 35 so that axostylus axostyle overcomes the reseting elasticity of screw thread spring 37 and moves a certain distance so that be fixed on axle
Annular gear platform on bar removes from a corresponding locating notch 321, such that it is able to folding carrier and rear luggage carrier, works as handle
When front luggage carrier or rear luggage carrier rotation 180 degree make both overlap, namely the basal surface of front frame assembly is made to adjoin rear car
After the basal surface of frame assembly, unclamping axostylus axostyle, axostylus axostyle moves under the reseting elasticity of screw thread spring 37 and resets so that annular gear platform
Again embed in another locating notch 321 corresponding, lock front luggage carrier and rear luggage carrier so that both will not divide themselves
Open.
It addition, the present embodiment also has a characteristic, it is simply that after attachment bolt assembly 38 is pulled down, front frame assembly and after
Chassis assembly all can independently become two-wheeled folding trailer；For front frame assembly, pull bar continues as towing holding rod,
Front luggage carrier continues as luggage carrier；But for Rear frame component, it is using the axostylus axostyle in Rear frame component as towing
Holding rod, backboard is as support board.
Obviously, the above embodiment of the present invention is only for clearly demonstrating 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, the most all right
Make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And these belong to
What the spirit in the present invention was extended out obviously changes or changes among still in protection scope of the present invention.
Claims (1)
1. a Four-wheel foldable trailer, including front frame assembly, Rear frame component and for coupling front frame assembly and rear car
The coupling mechanism of frame assembly；It is characterized in that: front frame assembly includes front luggage carrier, two front wheel assemblies, is arranged on front bearing
The front apron of thing frame front end and the pull bar being arranged on front apron；Rear frame component include rear luggage carrier, two rear wheel assemblies,
It is arranged on the backboard of rear luggage carrier rear end and for connecting two connectors of backboard and rear luggage carrier；Coupling mechanism bag
Two the front coupling bars including the left and right sides end being arranged on front luggage carrier rear end, the location being fixedly installed on each front coupling bar
Coupling bar after wheel, be arranged on rear luggage carrier front end two of left and right sides end, the connection being fixedly installed on each rear coupling bar
Flange, two the annular gears running through coupling bar after two axostylus axostyle that can move back and forth in left-right direction, being fixedly installed on axostylus axostyle
Platform, for providing the screw thread spring and being used for of reseting elasticity to be rotationally connected each rear coupling bar and a corresponding location wheel for axostylus axostyle
Attachment bolt assembly；The edge of each location wheel is provided with two the arc shaped locating notches being centrosymmetric, each annular gear platform
During moving back and forth along with axostylus axostyle, embed or remove in a corresponding locating notch；Described front frame assembly and rear car
Frame assembly can overlap after attachment bolt assembly rotates 180 degree；The left and right sides end of rear luggage carrier rear end is respectively provided with one backward
Prominent rear traveller, each rear traveller is provided with limiting block platform after annular, and the rear end of each rear limiting block platform is provided with multiple rear limiting tooth
Groove；The rear end of each rear traveller is provided with rear pin-and-hole；The front end of each connector is provided with the first pivoted hole, draws bearing surface in afterwards, launches afterwards
Bearing surface and the rear arc transition face of rear expansion bearing surface is drawn in after bearing surface and connection；Each connector is slided after corresponding one
Post by being rotationally connected through the bearing pin of the first pivoted hole and rear pin-and-hole, the central axis of the first pivoted hole and rear expansion bearing surface
Distance more than the distance of this central axis and rear gathering bearing surface；Launch bearing surface after each and be parallel to backboard place plane,
Draw bearing surface after each in and be perpendicular to backboard place plane；The rear end of each connector be provided with for backboard be rotationally connected
Two pivoted holes, gathering load-carrying surface and expansion load-carrying surface, draw load-carrying surface in and be positioned at second pivoted hole side away from the first pivoted hole,
Launch load-carrying surface and be positioned at second pivoted hole side close to the first pivoted hole；After each rear wheel assemblies includes having rear sleeve
The rear wheel that wheel carrier, rear torsion spring and rotation are arranged on rear wheel frame；The front end of each rear sleeve is provided with and matches with each rear spacing teeth groove
The rear spacing double wedge closed；Rear sleeve be set in corresponding one after on traveller, rear torsion spring set be located at corresponding after on traveller, and be positioned at
Within rear sleeve；Backboard connects boss after being provided with two, each after connect boss and be provided with rear axis hole and horizontal along rear luggage carrier
The cambered outwards load flange in side；Boss and a corresponding connector is connected by through rear axis hole and the pin of the second pivoted hole after each
Axle is rotationally connected；Load flange, along with rear connection boss is during the second pivoted hole rotates, can be connected to connector
Draw load-carrying surface in and launch in load-carrying surface, and then band follower link rotates；External force promotes backboard to rotate backward around rear axis hole, directly
Being connected in the expansion load-carrying surface of connector to load flange, now backboard upper surface is in same with the upper surface of rear luggage carrier
One plane, under the position-limiting action of the expansion load-carrying surface of connector, can prevent backboard from continuing to rotate backward；Front luggage carrier front end
Left and right sides end be respectively provided with a front sliding column prominent forward, each front sliding column is provided with annular front limit gear platform, each front limit
The front end of gear platform is provided with multiple front limit teeth groove；The front end of each front sliding column is provided with front pin-and-hole；Before each front wheel assemblies includes having
The front vehicle wheel that the front wheel carrier of sleeve pipe, front torsion spring and rotation are arranged on front wheel carrier；The rear end of each anterior cannula is provided with and each front limit
The front limit double wedge that teeth groove matches；Anterior cannula is set on a corresponding front sliding column, and front torsion spring set is located at corresponding front sliding column
On, and within being positioned at anterior cannula；Front apron connects boss before being provided with two, each front boss that connects is provided with front-axle hole, front receipts
Bearing surface and the front arc transition face of front expansion bearing surface is drawn in before holding together bearing surface, front expansion bearing surface and connecting；Front-axle hole
Distance a of central axis and front expansion bearing surface more than distance b of this central axis with front gathering bearing surface；Connect convex before each
Platform is by being rotationally connected through the bearing pin of front-axle hole and a corresponding front pin-and-hole with front sliding column；Before before each, expansion bearing surface is parallel to
Baffle plate place plane, each bearing surface that draws in is perpendicular to front apron place plane；In Rear frame component, backboard is perpendicular to rear loading
Frame place plane, and the rear load flange connecting boss is connected in the gathering load-carrying surface of connector, this gathering load-carrying surface is at this
Under state, prevent backboard from continuing to rotate forward；Rear expansion bearing surface in each connector is parallel to backboard place plane, and
It is connected on the rear end face of corresponding rear sleeve so that each rear spacing double wedge of rear sleeve front end is embedded in rear spacing teeth groove,
Rear spacing teeth groove thus rear sleeve is had restriction rotating effect so that rear wheel now be perpendicular to rear luggage carrier place put down
Face, can roll to realize normally towing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610327136.2A CN105946921A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310380223.0A CN103407473B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201610327136.2A CN105946921A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310380223.0A Division CN103407473B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105946921A true CN105946921A (en) | 2016-09-21 |
Family
ID=49600537
Family Applications (10)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329048.6A Withdrawn CN105882705A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201310380223.0A Active CN103407473B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201610327883.6A Withdrawn CN105946925A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610327136.2A Withdrawn CN105946921A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610327185.6A Withdrawn CN105946924A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610329601.6A Withdrawn CN106114568A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
| CN201610329097.XA Pending CN105882706A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201610327154.0A Withdrawn CN105946923A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610327149.XA Withdrawn CN105946922A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610330049.2A Withdrawn CN106114569A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329048.6A Withdrawn CN105882705A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201310380223.0A Active CN103407473B (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201610327883.6A Withdrawn CN105946925A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
Family Applications After (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610327185.6A Withdrawn CN105946924A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610329601.6A Withdrawn CN106114568A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
| CN201610329097.XA Pending CN105882706A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable trailer |
| CN201610327154.0A Withdrawn CN105946923A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610327149.XA Withdrawn CN105946922A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer |
| CN201610330049.2A Withdrawn CN106114569A (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (10) | CN105882705A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106364535B (en) * | 2016-08-24 | 2018-11-27 | 宁夏盐池西部畅享农业生物科技有限公司 | A kind of peasant's article bogey of folding |
| CN109969237B (en) * | 2017-12-28 | 2023-12-29 | 东莞市全乐电动科技有限公司 | Semi-automatic portable four-wheel linkage folding small trailer |
| CN108248655B (en) * | 2018-03-02 | 2020-07-31 | 浙江年代建设工程有限公司 | Foldable dull and stereotyped shock attenuation handcart |
| CN109062318B (en) * | 2018-07-09 | 2020-06-02 | 东莞恒耀日用制品有限公司 | Handle capable of being adjusted at multiple angles |
| CN109823381B (en) * | 2019-01-15 | 2021-04-30 | 陈其坚 | Shallow is used in commodity circulation transportation convenient to dismantle installation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505495A (en) * | 1982-12-14 | 1985-03-19 | Janet Mary Penrose Foss | Portable, foldable and convertible luggage trolley |
| JPH02270673A (en) * | 1989-04-12 | 1990-11-05 | Takao Saito | Foldable flat car |
| US20100044983A1 (en) * | 2008-08-22 | 2010-02-25 | Panigot Joseph E | Collapsible Utility Cart |
| CN202186404U (en) * | 2011-06-16 | 2012-04-11 | 黄怀高 | Foldable luggage cart |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206269U (en) * | 1987-04-10 | 1988-03-30 | 武汉工学院工厂 | Universal foldable sleeping cart |
| US4802681A (en) * | 1987-12-17 | 1989-02-07 | Hung Tung Ping | Wheelbarrow |
| CN2055465U (en) * | 1989-04-26 | 1990-04-04 | 韦秋成 | Multifunction folding trolley |
| CN2117305U (en) * | 1992-02-12 | 1992-09-30 | 林旗峰 | Multifunctional folding trolley |
| US6053514A (en) * | 1998-08-27 | 2000-04-25 | Su; Chung-Shiu | Push cart |
| DE10248582A1 (en) * | 2002-10-17 | 2004-05-06 | Erhard Lamberti | Shopping or transporting trolley has U-shaped handle equipped with coupling for articulated hooking up to especially luggage rack of bicycle, whereby first coupling component is connected to handle and second to luggage rack |
| CN2710701Y (en) * | 2004-05-27 | 2005-07-20 | 廖学金 | Electric golf cart structure |
| CN2815807Y (en) * | 2005-12-16 | 2006-09-13 | 武汉箕星制冷有限公司 | Light transfer vehicle |
| CN201659997U (en) * | 2010-03-19 | 2010-12-01 | 蓝金义 | Folding pusher |
| US20130026738A1 (en) * | 2011-07-29 | 2013-01-31 | Gordon Liao | Golf cart folding device |
-
2013
- 2013-08-27 CN CN201610329048.6A patent/CN105882705A/en not_active Withdrawn
- 2013-08-27 CN CN201310380223.0A patent/CN103407473B/en active Active
- 2013-08-27 CN CN201610327883.6A patent/CN105946925A/en not_active Withdrawn
- 2013-08-27 CN CN201610327136.2A patent/CN105946921A/en not_active Withdrawn
- 2013-08-27 CN CN201610327185.6A patent/CN105946924A/en not_active Withdrawn
- 2013-08-27 CN CN201610329601.6A patent/CN106114568A/en not_active Withdrawn
- 2013-08-27 CN CN201610329097.XA patent/CN105882706A/en active Pending
- 2013-08-27 CN CN201610327154.0A patent/CN105946923A/en not_active Withdrawn
- 2013-08-27 CN CN201610327149.XA patent/CN105946922A/en not_active Withdrawn
- 2013-08-27 CN CN201610330049.2A patent/CN106114569A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4505495A (en) * | 1982-12-14 | 1985-03-19 | Janet Mary Penrose Foss | Portable, foldable and convertible luggage trolley |
| JPH02270673A (en) * | 1989-04-12 | 1990-11-05 | Takao Saito | Foldable flat car |
| US20100044983A1 (en) * | 2008-08-22 | 2010-02-25 | Panigot Joseph E | Collapsible Utility Cart |
| CN202186404U (en) * | 2011-06-16 | 2012-04-11 | 黄怀高 | Foldable luggage cart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105946925A (en) | 2016-09-21 |
| CN103407473B (en) | 2016-06-22 |
| CN103407473A (en) | 2013-11-27 |
| CN105946923A (en) | 2016-09-21 |
| CN105882705A (en) | 2016-08-24 |
| CN106114569A (en) | 2016-11-16 |
| CN105882706A (en) | 2016-08-24 |
| CN106114568A (en) | 2016-11-16 |
| CN105946924A (en) | 2016-09-21 |
| CN105946922A (en) | 2016-09-21 |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160921 |