CN106314497A - Portable folding trailer - Google Patents

Portable folding trailer Download PDF

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Publication number
CN106314497A
CN106314497A CN201610837644.5A CN201610837644A CN106314497A CN 106314497 A CN106314497 A CN 106314497A CN 201610837644 A CN201610837644 A CN 201610837644A CN 106314497 A CN106314497 A CN 106314497A
Authority
CN
China
Prior art keywords
luggage carrier
bearing surface
hole
pivoted hole
pin
Prior art date
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.)
Withdrawn
Application number
CN201610837644.5A
Other languages
Chinese (zh)
Inventor
胡妍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yueqing Fengjie Electronic Technology Co Ltd
Original Assignee
Yueqing Fengjie Electronic Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yueqing Fengjie Electronic Technology Co Ltd filed Critical Yueqing Fengjie Electronic Technology Co Ltd
Priority to CN201610837644.5A priority Critical patent/CN106314497A/en
Publication of CN106314497A publication Critical patent/CN106314497A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B62B3/007—Coaster wagons
    • 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
    • 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
    • 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
    • B62B1/10—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is intended to be transferred totally to the wheels
    • B62B1/12—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is intended to be transferred totally to the wheels involving parts being adjustable, collapsible, attachable, detachable, or convertible
    • 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
    • B62B2205/02—Hand-propelled vehicles or sledges being foldable or dismountable when not in use foldable widthwise
    • 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
    • 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
    • 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
    • B62B2206/006—Convertible hand-propelled vehicles or sledges

Abstract

The invention discloses a portable folding trailer which comprises a front frame assembly, a rear frame assembly and a connecting mechanism. The front frame assembly comprises a front loading carrier, a front wheel assembly, a front baffle and a pull rod, the rear frame assembly comprises a rear loading carrier, a rear wheel assembly, a rear baffle and a connecting piece. The connecting mechanism comprises front connecting rods provided with screw holes, front pin-joint connection portions, rear connecting rods provided with locking holes, rear pin-joint connection portions, locking screws and connecting hinge pins. The front pin-joint connection portions are in rotary connection with the rear pin-joint connection portions through the connecting hinge pins. When the upper surface of the front loading carrier and the upper surface of the rear loading carrier are located on the same plane, the screw holes rightly face locking hole positions in the transverse direction, and the locking screws are located in the corresponding screw holes and extend into or move out of corresponding locking holes in the reciprocating screwing process. The portable folding trailer has the advantages of being convenient to carry and store.

Description

A kind of portable folding trailer
Technical field
The present invention relates to trailer technical field, particularly relate to a kind of portable folding 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 portable folding trailer carried.
The technical scheme realizing the object of the invention is: a kind of portable folding 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 includes be arranged on the left and right sides end of front luggage carrier rear end two with screw Front coupling bar, the front pin joint connecting portion being fixedly installed on each front coupling bar diapire, it is arranged on the left and right two of rear luggage carrier front end Coupling bar after two with lock hole of side, the rear pin joint connecting portion being fixedly installed on each rear coupling bar on diapire, two Individual lock-screw and two connecting link pins；Each front pin joint connecting portion is rotated even by a connecting link pin with rear pin joint connecting portion Connecing, when current luggage carrier upper surface and rear luggage carrier upper surface are in same plane, each screw is the most just to a lock Determining hole to arrange, each lock-screw is positioned in a corresponding screw, and during reciprocal turn, stretches into or remove corresponding lock Determine hole；Described front frame assembly and Rear frame component can overlap after connecting link pin rotates 180 degree；The left and right of rear luggage carrier rear end Two side ends is respectively provided with a rearwardly projecting rear traveller, and each rear traveller is provided with limiting block platform after annular, each rear limiting block platform Rear end 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 be provided with the first pivoted hole, Bearing surface and the rear rear arc transition face launching bearing surface is drawn in after rear gathering bearing surface, rear expansion bearing surface and connection, after Draw in after bearing surface is perpendicular to and launch bearing surface；Each connector with corresponding one after traveller by through the first pivoted hole and rear pin The bearing pin in hole is rotationally connected, distance a of the central axis of the first pivoted hole and rear expansion bearing surface more than this central axis with after Draw distance b of bearing surface in；Launching bearing surface after each and be parallel to backboard place plane, each rear bearing surface that draws in is perpendicular to backstop Plate place plane；The rear end of each connector is provided with the second pivoted hole for being rotationally connected with backboard, draws load-carrying surface, expansion in Load-carrying surface and locking screw holes, the second pivoted hole, between locking screw holes and the first pivoted hole, draws load-carrying surface in and is positioned at the second pivot Connect the side away from the first pivoted hole, the hole, launch load-carrying surface and be positioned at second pivoted hole side close to the first pivoted hole；Each rear car Wheel assembly includes having the rear wheel that the rear wheel frame of rear sleeve, rear torsion spring and rotation are arranged on rear wheel frame；Before each rear sleeve End is provided with the rear spacing double wedge matched with each rear spacing teeth groove；Rear sleeve be set in corresponding one after on traveller, rear torsion spring set Be located at corresponding after on traveller, and within being positioned at rear sleeve；Backboard connects boss after being provided with two, set on boss each rear connection There is rear axis hole, along the load flange of rear luggage carrier horizontal direction evagination and the limiting lock that matches with locking screw holes on connector Hole；Boss and a corresponding connector is connected by being rotationally connected through the bearing pin of rear axis hole and the second pivoted hole after each；One Stop screw is arranged in the locking screw holes of connector, and during reciprocal turn, stretches into or remove corresponding limiting lock Hole；Load flange, along with rear connection boss is during the second pivoted hole rotates, can be connected to the gathering load of connector On face and expansion load-carrying surface, and then band follower link rotates；Pull bar is fixedly installed on front apron；Under deployed condition, directly exist Backboard is promoted forward under External Force Acting, owing to the load flange on backboard is connected in the gathering load-carrying surface of connector, from And band follower link rotates forward around the first pivoted hole, it is perpendicular to rear luggage carrier place plane until drawing bearing surface afterwards in and abuts 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 this central axis Distance with rear gathering bearing surface so that rear sleeve, in the rotation process of connector, is understood under the elastic force effect of rear torsion spring, to Rear sliding certain distance so that rear spacing double wedge removes spacing teeth groove after corresponding, and rear sleeve can be at the torsion of rear torsion spring Under effect, rear wheel frame and rear wheel is driven to overlap with rear luggage carrier after turning an angle.
In such scheme, after front frame assembly and Rear frame component overlapping, luggage carrier after the basal surface of front luggage carrier is adjacent Basal surface arrange.
In such scheme, before front apron is adjacent, the upper surface of luggage carrier is arranged, the upper surface of luggage carrier after backboard is adjacent Arrange.
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 complete closed state, reduce floor space, have advantage easy to carry and store.
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 explosive view of front frame assembly shown in Fig. 2；
Fig. 4 is a kind of explosive view when another angle is observed of front frame assembly shown in Fig. 2；
Fig. 5 is a kind of perspective view of Rear frame component in trailer shown in Fig. 1；
Fig. 6 is a kind of explosive view of Rear frame component shown in Fig. 5；
Fig. 7 is a kind of perspective view when another angle is observed of the Rear frame component shown in Fig. 5；
A kind of side view when Fig. 8 is that in Rear frame component shown in Fig. 5, backboard and connector coordinate；
Fig. 9 is a kind of explosive view of backboard described in Fig. 8 and connector；
Figure 10 is the present invention a kind of perspective view when being in flat；
Figure 11 is a kind of perspective view when another angle is observed of the trailer shown in Figure 10；
Figure 12 is a kind of side view of trailer shown in Figure 10；
Figure 13 is the present invention a kind of perspective view when being in preliminary folded state；
Figure 14 is a kind of side view of trailer shown in Figure 13；
Figure 15 is the close-up schematic view in Figure 14 at A；
Figure 16 is the close-up schematic view in Figure 14 at B；
Figure 17 is the present invention a kind of perspective view when being in completely folded state；
Figure 18 is a kind of side view of trailer shown in Figure 17.
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, spacing Lockhole 234, connector 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, draws load-carrying surface 246 in, launches load-carrying surface 247, locking screw holes 248, stop screw 25, coupling mechanism 3, front coupling bar 31, screw 311, front pin joint connecting portion 32, rear coupling bar 33, lock hole 331, rear pin joint connecting portion 34, locking Screw 35, connecting link pin 36, bearing pin 100.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of modular folding 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 Fig. 9, described front frame assembly include front luggage carrier 11, two front wheel assemblies 12, the front apron 13 being arranged on front luggage carrier front end and the pull bar 14 being arranged on front apron；Before The left and right sides end of luggage carrier front end is respectively provided with a front sliding column 111 prominent forward, and each front sliding column is provided with annular front limit 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 having the front wheel carrier 122 of anterior cannula 121, front torsion spring 123 and rotate the front truck being arranged on front wheel carrier 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 accordingly On one front sliding column, front torsion spring set is located on corresponding front sliding column, and within being positioned at anterior cannula；Front apron connects before being provided with two Connecing boss 131, each front boss that connects is provided with front-axle hole 132, front gathering bearing surface 133, front expansion bearing surface 134, Yi Jilian Bearing surface and the front arc transition face 135 of front expansion bearing surface is drawn in before connecing；The central axis of front-axle hole and front expansion bearing surface Distance more than the distance of this central axis and front gathering bearing surface；Boss is connected by through front-axle hole and corresponding one before each The bearing pin 100 of front pin-and-hole is rotationally connected with front sliding column；Launch bearing surface before each and be parallel to front apron place plane, respectively draw abutting in Face 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 be provided with the first pivoted hole 241, rear draw in bearing surface 242, rear launch bearing surface 243, with And after connecting, draw bearing surface and the rear arc transition face 244 of rear expansion bearing surface in, rear gathering in after bearing surface is perpendicular to launches to support Junction；Each connector with corresponding one after traveller be rotationally connected by the bearing pin 100 through the first pivoted hole and rear pin-and-hole 214, As shown in Figure 8, the central axis of the first pivoted hole abuts with rear gathering in more than this central axis with distance a of rear expansion bearing surface Distance b in face；Launching bearing surface after each and be parallel to backboard place plane, each rear gathering bearing surface is perpendicular to backboard place and puts down Face；The rear end of each connector is provided with the second pivoted hole 245 for being rotationally connected with backboard, draws load-carrying surface 246 in, launches to hold Power face 247 and locking screw holes 248, the second pivoted hole 245, between locking screw holes 248 and the first pivoted hole 241, draws load in Face is positioned at second pivoted hole side away from the first pivoted hole, launches load-carrying surface and is positioned at the second pivoted hole close to the first pivoted hole Side；Each rear wheel assemblies includes that having the rear wheel frame 222 of rear sleeve 221, rear torsion spring 223 and rotation is arranged on rear wheel frame Rear wheel 224；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 is sheathed After corresponding one on traveller, rear torsion spring set be located at corresponding after on traveller, and within being positioned at rear sleeve；Backboard is provided with two Rear connection boss 231, each after connect boss and be provided with rear axis hole 232, load flange along rear luggage carrier horizontal direction evagination 233 and the spacing lockhole 234 that matches with locking screw holes on connector；Connect boss after each and a corresponding connector passes through Bearing pin 100 through rear axis hole and the second pivoted hole is rotationally connected；One stop screw 25 is arranged on the locking screw holes of connector In, and during reciprocal turn, stretch into or remove corresponding spacing lockhole 234；Load flange is along with rear connection boss During the second pivoted hole rotates, the gathering load-carrying surface of connector can be connected to and launch in load-carrying surface, and then the company of drive Fitting rotates.
What in the present embodiment, coupling mechanism 3 included being arranged on the left and right sides end of front luggage carrier rear end has screw 311 Two front coupling bars 31, the front pin joint connecting portion 32 being fixedly installed on each front coupling bar diapire, it is arranged on rear luggage carrier front end Two with lock hole 331 of left and right sides end after coupling bar 33, be fixedly installed on each rear coupling bar on diapire after 34, two lock-screws 35 of pin joint connecting portion and two connecting link pins 36；Each front pin joint connecting portion leads to rear pin joint connecting portion Cross a connecting link pin to be rotationally connected, when current luggage carrier upper surface and rear luggage carrier upper surface are in same plane, each screw One lock hole 331 is the most just arranged by 311, and each lock-screw 35 is positioned in a corresponding screw 311, and back and forth During turn, stretch into or remove corresponding lock hole 331；Described front frame assembly and Rear frame component can be around connecting link pins Overlap after 36 rotations 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 Fig. 9, 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 after being screwed in screw 311 by lock-screw 35 and stretch into To lock hole 331, front luggage carrier and rear luggage carrier are locked.Now in front frame assembly, front apron is perpendicular to front luggage carrier, Front expansion bearing surface 131 on front limit gear platform is parallel to front apron place plane, and is connected to the front end face of anterior cannula 121 On, simultaneously also make each front limit double wedge of anterior cannula rear end be embedded in corresponding front limit teeth groove, front limit teeth groove thus Anterior cannula is had restriction rotating effect so that front vehicle wheel now is perpendicular to front luggage carrier place plane, can roll with reality The most normally tow.In Rear frame component, backboard is perpendicular to rear luggage carrier place plane, and the rear load flange connecting boss 233 are connected in the gathering load-carrying surface 246 of connector, this gathering load-carrying surface in this condition, be possible to prevent backboard continue to Front rotation；It addition, now turn stop screw 25 so that it is extend into after the locking screw holes 248 of connector corresponding after connect Connect in the spacing lockhole 234 on boss 231, thus backboard 23 is got up with connector locking, effectively prevent backboard at goods Rotate backward under the extruding of thing；Rear expansion bearing surface 243 in each connector is parallel to backboard place plane, and is connected to phase On the rear end face of the rear sleeve answered so that each rear spacing double wedge of rear sleeve front end is embedded in rear spacing teeth groove, rear limiting tooth Groove thus rear sleeve is had restriction rotating effect so that rear wheel now is perpendicular to rear luggage carrier place plane, can roll Dynamic to realize normally towing.
The present embodiment is in shown in the concrete structure as Figure 10 to Figure 12 of flat, under deployed condition shown in Fig. 1, and rotation Dynamic stop screw 25 so that it is remove from the spacing lockhole 234 of rear connection boss 231, external force promotes backboard around rear axis hole 232 Rotate backward, until load flange 233 is connected in the expansion load-carrying surface 247 of connector, now backboard upper surface and rear bearing The upper surface of thing frame is in same plane, under the position-limiting action of the expansion load-carrying surface 247 of connector, can prevent backboard from continuing Rotate backward；This structure can also serve as support board backboard and use, and is effectively increased the loaded area of trailer.
The present embodiment is in shown in the concrete structure as Figure 13 to Figure 16 of preliminary folded state, in deployed condition shown in Fig. 1 Under, promote the most forward backboard, owing to the load flange 233 on backboard is connected to the gathering of connector In load-carrying surface 246, thus band follower link rotates forward around the first pivoted hole 241, until after gathering bearing surface 242 is perpendicular to afterwards Luggage carrier place plane is also connected on the rear end face of rear sleeve, due to central axis and the rear expansion bearing surface of the first pivoted hole Distance more than the distance of this central axis and rear gathering bearing surface so that rear sleeve, in the rotation process of connector, can exist Under the elastic force effect of rear torsion spring 223, sliding certain distance backward so that rear spacing double wedge moves spacing teeth groove after corresponding Go out, no longer rear sleeve is had restriction rotating effect due to rear spacing teeth groove, so rear sleeve can be at the twisting force of rear torsion spring Under, drive rear wheel frame 222 and rear wheel 224 to overlap with rear luggage carrier after turning an angle.It addition, launching shape shown in Fig. 1 Under state, external force promotes front apron backward, connects boss 131 and rotate backward around front-axle hole 132 before driving, until front gathering bearing surface 133 are connected on the front end face of anterior cannula, owing to the central axis of front-axle hole and the distance of front expansion bearing surface are more than this center The distance of axis and front gathering bearing surface, so during the rotating backward of backboard, anterior cannula can sliding one spacing forward From so that front limit double wedge removes from corresponding front limit teeth groove, owing to front limit teeth groove does not has restriction to anterior cannula Rotating effect, thus anterior cannula can under the twisting force of front torsion spring, after driving front wheel carrier and front vehicle wheel to turn an angle with Front luggage carrier overlaps.
The present embodiment is in shown in the concrete structure as Figure 17 to Figure 18 of completely folded state, is tentatively folding shown in Figure 13 Under state, turn lock-screw 35 makes its end remove lock hole 331, and the most front luggage carrier and rear luggage carrier can be around connecting link pins 36 rotate, and rotate make after 180 degree before the basal surface of the adjacent luggage carrier afterwards of basal surface of luggage carrier；Now, can again revolve Dynamic lock-screw 35 makes its end extend in lock hole 331, thus again front luggage carrier and rear luggage carrier is locked so that two Person will not oneself separate.
It addition, the present embodiment also has a characteristic, it is simply that after pulling down connecting link pin 36 (because in concrete practice, The riveting pin in the present embodiment can be replaced as connecting link pin with bolt assembly, its dismounting is the most relatively simple), front frame group Part and Rear frame component all can independently become two-wheeled folding trailer；For front frame assembly, pull bar continues as dragging Row holding rod, front luggage carrier continues as luggage carrier；But for Rear frame component, be so that Rear frame component to be closed on before The roofbolt of luggage carrier is as towing holding rod, and 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 portable folding 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 Include two front coupling bars with screw of the left and right sides end being arranged on front luggage carrier rear end, be fixedly installed on each front coupling bar Front pin joint connecting portion on diapire, couple after two with lock hole of the left and right sides end being arranged on rear luggage carrier front end Bar, the rear pin joint connecting portion being fixedly installed on each rear coupling bar on diapire, two lock-screws and two connecting link pins；Respectively Front pin joint connecting portion is rotationally connected by a connecting link pin with rear pin joint connecting portion, current luggage carrier upper surface and rear luggage carrier When upper surface is in same plane, a lock hole is the most just arranged by each screw, and each lock-screw is positioned at corresponding one In individual screw, and during reciprocal turn, stretch into or remove corresponding lock hole；Described front frame assembly and Rear frame group Part can overlap after connecting link pin rotates 180 degree；The left and right sides end of rear luggage carrier rear end be respectively provided with one rearwardly projecting after 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 spacing teeth groove；Slide after each The rear end of post is provided with rear pin-and-hole；The front end of each connector be provided with the first pivoted hole, afterwards draw in bearing surface, rear launch bearing surface and Drawing bearing surface and the rear arc transition face of rear expansion bearing surface after connection in, rear gathering in after bearing surface is perpendicular to launches bearing surface； 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 pivoted hole Distance a of central axis and rear expansion bearing surface is more than distance b of this central axis with rear gathering bearing surface；Launch after each to abut Face 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 is provided with For the second pivoted hole, gathering load-carrying surface, expansion load-carrying surface and locking screw holes, the second pivoted hole position that are rotationally connected with backboard Between locking screw holes and the first pivoted hole, draw load-carrying surface in and be positioned at second pivoted hole side away from the first pivoted hole, launch Load-carrying surface is positioned at second pivoted hole side close to the first pivoted hole；Each rear wheel assemblies include having rear sleeve rear wheel frame, The rear wheel that rear torsion spring and rotation are arranged on rear wheel frame；The front end of each rear sleeve is provided with after matching with each rear spacing teeth groove Spacing double wedge；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 rear sleeve Within；Backboard connects boss after being provided with two, each rear boss that connects is provided with rear axis hole, along rear luggage carrier horizontal direction evagination Load flange and the spacing lockhole that matches with locking screw holes on connector；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；One stop screw is arranged in the locking screw holes of connector, And during reciprocal turn, stretch into or remove corresponding spacing lockhole；Load flange is along with rear connection boss is around second During pivoted hole rotates, the gathering load-carrying surface of connector can be connected to and launch in load-carrying surface, and then band follower link turns Dynamic；Pull bar is fixedly installed on front apron；Under deployed condition, promote the most forward backboard, due to backstop Load flange on plate is connected in the gathering load-carrying surface of connector, thus band follower link rotates forward around the first pivoted hole, Draw bearing surface after until in be perpendicular to rear luggage carrier place plane and be connected on the rear end face of rear sleeve, due to the first pivoted hole The distance of central axis and rear expansion bearing surface more than the distance of this central axis with rear gathering bearing surface so that rear sleeve exists In the rotation process of connector, can be under the elastic force effect of rear torsion spring, sliding certain distance backward so that rear spacing double wedge is from phase Removing in the rear spacing teeth groove answered, rear sleeve can drive rear wheel frame and rear wheel to rotate certain under the twisting force of rear torsion spring Overlap with rear luggage carrier after angle.
CN201610837644.5A 2013-08-27 2013-08-27 Portable folding trailer Withdrawn CN106314497A (en)

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CN201610837644.5A CN106314497A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201310379520.3A CN103407471B (en) 2013-08-27 2013-08-27 Modular folding trailer

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Application Number Title Priority Date Filing Date
CN201610837854.4A Withdrawn CN106314501A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201610837802.7A Withdrawn CN106314499A (en) 2013-08-27 2013-08-27 Combined foldable trailer
CN201310379520.3A Active CN103407471B (en) 2013-08-27 2013-08-27 Modular folding trailer
CN201610837786.1A Withdrawn CN106379384A (en) 2013-08-27 2013-08-27 Combined folded trailer
CN201610837789.5A Withdrawn CN106314498A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201610839277.2A Withdrawn CN106314502A (en) 2013-08-27 2013-08-27 Combined foldable trailer
CN201610837805.0A Withdrawn CN106314500A (en) 2013-08-27 2013-08-27 Folding trailer
CN201610837644.5A Withdrawn CN106314497A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201610837804.6A Withdrawn CN106240615A (en) 2013-08-27 2013-08-27 A kind of modular folding trailer
CN201610837720.2A Withdrawn CN106394632A (en) 2013-08-27 2013-08-27 Folding trailer

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Application Number Title Priority Date Filing Date
CN201610837854.4A Withdrawn CN106314501A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201610837802.7A Withdrawn CN106314499A (en) 2013-08-27 2013-08-27 Combined foldable trailer
CN201310379520.3A Active CN103407471B (en) 2013-08-27 2013-08-27 Modular folding trailer
CN201610837786.1A Withdrawn CN106379384A (en) 2013-08-27 2013-08-27 Combined folded trailer
CN201610837789.5A Withdrawn CN106314498A (en) 2013-08-27 2013-08-27 Portable folding trailer
CN201610839277.2A Withdrawn CN106314502A (en) 2013-08-27 2013-08-27 Combined foldable trailer
CN201610837805.0A Withdrawn CN106314500A (en) 2013-08-27 2013-08-27 Folding trailer

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CN201610837804.6A Withdrawn CN106240615A (en) 2013-08-27 2013-08-27 A kind of modular folding trailer
CN201610837720.2A Withdrawn CN106394632A (en) 2013-08-27 2013-08-27 Folding trailer

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CN107600139A (en) * 2017-10-16 2018-01-19 王钦兵 A kind of multi-functional tortoise car
CN107628085A (en) * 2017-10-16 2018-01-26 王钦兵 A kind of multi-purpose wheelbarrow
WO2019076174A1 (en) * 2017-10-16 2019-04-25 王钦兵 Multi-functional cart

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CN107200048B (en) * 2017-06-12 2019-06-25 安徽江淮车轮有限公司 A kind of easy to use and flexible convenient and fast wheel transportation vehicle
CN110606115A (en) * 2019-10-24 2019-12-24 刘三国 Folding travel trailer
CN112901975A (en) * 2019-12-23 2021-06-04 苏州苏忆文化传媒有限公司 Shooting railcar

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US4274644A (en) * 1979-08-30 1981-06-23 Taylor Frank E Four wheeled hand truck
SU1449440A1 (en) * 1987-02-16 1989-01-07 А. М. Манилов Collapsible cart
JPH02270673A (en) * 1989-04-12 1990-11-05 Takao Saito Foldable flat car
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CN107628085A (en) * 2017-10-16 2018-01-26 王钦兵 A kind of multi-purpose wheelbarrow
WO2019076174A1 (en) * 2017-10-16 2019-04-25 王钦兵 Multi-functional cart

Also Published As

Publication number Publication date
CN106314499A (en) 2017-01-11
CN106314498A (en) 2017-01-11
CN103407471B (en) 2016-12-28
CN106314501A (en) 2017-01-11
CN106314502A (en) 2017-01-11
CN103407471A (en) 2013-11-27
CN106314500A (en) 2017-01-11
CN106240615A (en) 2016-12-21
CN106394632A (en) 2017-02-15
CN106379384A (en) 2017-02-08

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Application publication date: 20170111