CN105292209A - Four-wheel foldable type trailer - Google Patents
Four-wheel foldable type trailer Download PDFInfo
- Publication number
- CN105292209A CN105292209A CN201510869460.2A CN201510869460A CN105292209A CN 105292209 A CN105292209 A CN 105292209A CN 201510869460 A CN201510869460 A CN 201510869460A CN 105292209 A CN105292209 A CN 105292209A
- Authority
- CN
- China
- Prior art keywords
- luggage carrier
- wheel
- bearing surface
- back shield
- pivoted hole
- 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- Withdrawn
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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
- B62B2205/04—Hand-propelled vehicles or sledges being foldable or dismountable when not in use box-shaped in folded position
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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
Abstract
The invention discloses a four-wheel foldable type trailer. The trailer comprises a front trailer frame assembly, a rear trailer frame assembly and a coupling mechanism; the front trailer frame assembly comprises a front carrying bracket, front wheel assemblies, a front baffle and a pull bar; the rear trailer frame assembly comprises a rear carrying bracket, rear wheel assemblies, a rear baffle and connecting parts; each front wheel assembly comprises a front wheel rotatably connected with the front carrying bracket; each rear wheel assembly comprises a rear wheel rotatably connected with the rear carrying bracket; the front baffle is rotably connected with the front carrying bracket, can be rotated to be superposed with the front carrying bracket and is arranged to be adjacent to the upper surface of the front carrying bracket; the front wheels can be rotated to be superposed with the front carrying bracket; the rear baffle is roatably connected with the rear carrying bracket, can be rotated to be superposed with the rear carrying bracket and is arranged to be adjacent to the upper surface of the rear carrying bracket; the front carrying bracket and the rear carrying bracket can be rotated to be superposed, and the bottom surface of the front carrying bracket is arranged to be adjacent to the bottom surface of the rear carrying bracket. The four-wheel foldable type trailer can be folded, and thus the four-wheel foldable type trailer is convenient to carry.
Description
The divisional application that the application is the applying date is " on 08 27th, 2013 ", application number is " 2013103796935 ", patent name is the application for a patent for invention of " a kind of Four-wheel foldable trailer ".
Technical field
The present invention relates to trailer technical field, particularly relate to a kind of Four-wheel foldable trailer.
Background technology
People often use four-wheel trailer when doing shopping carrying article, can save strength for user, but four-wheel trailer volume is general comparatively large at present, can not fold gathering, carry inconvenience, take up room also very large when depositing.
Patent documentation CN202186404U discloses a kind of foldable luggage trolley, this car comprises telescopic vehicle frame, its underpart is provided with the cylindrical pull bar be hinged with baggage car weight tray, described cylindrical pull bar top is provided with the first circular groove, and the first circular groove lower surface is provided with the first spiral-guide face; Weight tray folds afterwards and vehicle frame is fitted, and it launches vertical with vehicle frame afterwards setting, for carrying luggage; Weight tray is connected side and is provided with the vertical road wheel Stroke Control part be fixedly connected with described weight tray with vehicle frame; Wheel stand has the second circular groove be socketed with described cylindrical pull bar adaptation, and the second circular groove upper surface is provided with the second spiral-guide face suitable with described first spiral-guide face, and the second circular groove internal fixtion is taken a seat a rotary torsion spring; Pull bar is vertically arranged in the second circular groove, and the shaft hole sleeve of pull bar bottom is connected in the axle of vertical road wheel Stroke Control part; When weight tray launches, described vertical road wheel formation control part forms pushing tow to the second circular groove, guide under the combined action in described first spiral-guide face and the second spiral-guide face and vertical road wheel moves and launches to both sides outward turning, when weight tray folds, wheel inward turning under the effect of described rotary torsion spring reclaims and vertically moves down simultaneously; Vehicle wheel after folding is along protruding from edge at the bottom of the weight tray after folding.
This patent documentation describes detailed mechanism and the principle of work of collapsible wheel in detail, but this kind of foldable luggage trolley is owing to being the push-and-pull vehicle only having two-wheeled, and carrying dynamics is less, can not be widely used in factory floor and use.
Summary of the invention
The object of this invention is to provide one can fold, thus portable Four-wheel foldable trailer.
The technical scheme realizing the object of the invention is: a kind of portable Four-wheel foldable trailer, comprises the coupling mechanism that front vehicle frame assembly, Rear frame component and rotation connect front vehicle frame assembly and Rear frame component, front vehicle frame assembly comprises front luggage carrier, two front wheel assemblies, the front apron being arranged on front luggage carrier front end and the pull bars be arranged on front apron, Rear frame component comprising rear luggage carrier, two rear wheel assemblies, being arranged on the back shield of rear luggage carrier rear end and two attaching partss for connecting back shield and rear luggage carrier, each front wheel assemblies comprises the front wheel carrier with anterior cannula, front torsion spring and rotation and is arranged on front vehicle wheel on front wheel carrier, each rear wheel assemblies comprises the rear wheel frame with rear sleeve, rear torsion spring and rotation and is arranged on rear wheel on rear wheel frame, front apron and front luggage carrier are rotationally connected, and front apron can turn to front luggage carrier superimposed, and the upper surface of adjacent front luggage carrier is arranged, front vehicle wheel can turn to front luggage carrier superimposed, back shield and rear luggage carrier are rotationally connected, and back shield can turn to rear luggage carrier superimposed, and the upper surface of adjacent rear luggage carrier is arranged, front luggage carrier and rear luggage carrier can turn to superimposed, and the basal surface that the basal surface of front luggage carrier adjoins rear luggage carrier is arranged, the left and right sides end of rear luggage carrier rear end is respectively provided with a rearwardly projecting rear traveller, and each rear traveller is provided with the rear limiting block platform of annular, and 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, the front end of each attaching parts is provided with the first pivoted hole, rear gathering bearing surface, rear expansion bearing surface and draws the rear arc transition face of bearing surface and rear expansion bearing surface after connecting in, after each attaching parts and corresponding one, traveller is by being rotationally connected through the bearing pin of the first pivoted hole and rear pin-and-hole, and the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, each rear expansion bearing surface is parallel to back shield place plane, and each rear gathering bearing surface is perpendicular to back shield place plane, the rear end of each attaching parts being provided with the second pivoted hole for being rotationally connected with back shield, drawing bearing area in and launching bearing area, draw bearing area in and be positioned at the side of the second pivoted hole away from the first pivoted hole, launch bearing area and be positioned at the side of the second pivoted hole close to the first pivoted hole, the front end of each rear sleeve is provided with the rear spacing double wedge matched with each rear spacing teeth groove, after rear sleeve is set in corresponding one on traveller, rear torsion spring set is located on corresponding rear traveller, and is positioned within rear sleeve, back shield connects boss after being provided with two, and each rear connection boss is provided with rear axis hole and the load flange along rear luggage carrier horizontal direction evagination, each rear connection boss and a corresponding attaching parts are by being rotationally connected through the bearing pin of rear axis hole and the second pivoted hole, load flange, in the process of rotating around the second pivoted hole along with rear connection boss, can be connected to the gathering bearing area of attaching parts and launch in bearing area, and then band follower link rotates, under deployed condition, external force driven forward back shield, load flange on back shield is connected in the gathering bearing area of attaching parts, thus band follower link rotates forward around the first pivoted hole, until after draw bearing surface in and be connected on the aft end face of rear sleeve perpendicular to rear luggage carrier place plane, the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, rear sleeve is in the rotation process of attaching parts, can under the elastic force effect of rear torsion spring, slippage certain distance backward, rear spacing double wedge is shifted out from corresponding rear spacing teeth groove, because rear spacing teeth groove no longer has restriction rotating effect to rear sleeve, so rear sleeve can under the twisting force of rear torsion spring, be connected on the basal surface of rear luggage carrier after driving rear wheel frame and rear wheel to turn an angle.
The present invention in use, can launch front vehicle frame assembly and Rear frame component to use, when depositing, front vehicle frame assembly and Rear frame component can be folded to closed state, reduce floor area, having advantage easy to carry and store; In addition, the present invention, after folding and launching, can rely on the elastic force of screw thread spring, axostylus axostyle and annular gear platform is driven to automatically reset, embed on locating wheel in a corresponding locating notch, thus locking front vehicle frame assembly and Rear frame component, have and use advantageously advantage.
Accompanying drawing explanation
Fig. 1 is a kind of perspective view of the present invention when being in deployed condition;
Fig. 2 is a kind of perspective view of front vehicle frame assembly in trailer shown in Fig. 1;
Fig. 3 is that the assembly of front vehicle frame shown in Fig. 2 is from a kind of perspective view during another angle views;
Fig. 4 is a kind of lateral plan of the assembly of front vehicle frame shown in Fig. 2;
Fig. 5 is a kind of lateral plan of front apron in the assembly of front vehicle frame shown in 2;
Fig. 6 is a kind of exploded view of the assembly of front vehicle frame shown in Fig. 2;
Fig. 7 is a kind of exploded view of the assembly of front vehicle frame 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 that Rear frame component shown in Fig. 8 is from a kind of perspective view during another angle views;
Figure 10 is a kind of lateral plan of Rear frame component shown in Fig. 8;
Figure 11 is a kind of exploded view of Rear frame component shown in Fig. 8;
Figure 12 is a kind of exploded view of Rear frame component shown in Fig. 9;
Figure 13 is a kind of perspective view of the present invention when being in flat;
Figure 14 is a kind of perspective view of back shield in trailer shown in Figure 13;
Figure 15 is a kind of perspective view of the present invention when being in preliminary folded state;
Figure 16 is a kind of exploded view of back shield and attaching parts in Figure 15;
Figure 17 is a kind of lateral plan of trailer shown in Figure 15;
Figure 18 is a kind of structural representation of coupling mechanism in the present invention;
Figure 19 is a kind of perspective view of the present invention when being in complete folded state;
Figure 20 is a kind of lateral plan of trailer shown in Figure 19.
Be labeled as shown in accompanying drawing: front vehicle 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, front arc transition face 135, rotating junction 136, clamp 137, pull bar 14, Rear frame component 2, rear luggage carrier 21, rear traveller 211, rear 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, back shield 23, rear connection boss 231, rear axis hole 232, load flange 233, attaching parts 24, first pivoted hole 241, rear gathering bearing surface 242, rear expansion bearing surface 243, rear arc transition face 244, second pivoted hole 245, draw bearing area 246 in, launch bearing area 247, coupling mechanism 3, front pitman 31, locating wheel 32, locating notch 321, rear pitman 33, connect 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, comprises front vehicle frame assembly 1, Rear frame component 2 and the coupling mechanism 3 for connecting front vehicle frame assembly and Rear frame component.
Concrete structure when the present embodiment is in deployed condition is shown in Fig. 1 to Figure 12, and described front vehicle frame assembly comprises 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 be 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 given prominence to forward, and each front sliding column is provided with annular front limit gear platform 112, and 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 comprises front wheel carrier 122, the front torsion spring 123 with anterior cannula 121 and rotates the front vehicle wheel 124 that is arranged on front wheel carrier; 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 on a corresponding front sliding column, and front torsion spring set is located on corresponding front sliding column, and is positioned within anterior cannula;
Front apron connects boss 131 before being provided with two, connects boss and be provided with front-axle hole 132, front gathering bearing surface 133, front expansion bearing surface 134 and draw the front arc transition face 135 of bearing surface and front expansion bearing surface before connecting in before each; As shown in Figure 5, the central axis of front-axle hole and the distance a of front expansion bearing surface are greater than the distance b of this central axis and front gathering bearing surface; Boss is connected by being rotationally connected with front sliding column through the bearing pin 100 of front-axle hole and a corresponding front pin-and-hole before each; Launch 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.
Rear frame component comprising rear luggage carrier 21, two rear wheel assemblies 22, being arranged on the back shield 23 of rear luggage carrier rear end and two attaching partss 24 for being connected back shield 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 the rear limiting block platform 212 of annular, and 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 attaching parts is provided with the first pivoted hole 241, rear gathering bearing surface 242, rear expansion bearing surface 243 and draws the rear arc transition face 244 of bearing surface and rear expansion bearing surface after connecting in; After each attaching parts and corresponding one, traveller is rotationally connected by the bearing pin 100 through the first pivoted hole and rear pin-and-hole 214, and the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface; Each rear expansion bearing surface is parallel to back shield place plane, and each rear gathering bearing surface is perpendicular to back shield place plane; The rear end of each attaching parts being provided with the second pivoted hole 245 for being rotationally connected with back shield, drawing bearing area 246 in and launching bearing area 247, draw bearing area in and be positioned at the side of the second pivoted hole away from the first pivoted hole, launch bearing area and be positioned at the side of the second pivoted hole close to the first pivoted hole;
Each rear wheel assemblies comprises rear wheel frame 222, the rear torsion spring 223 with rear sleeve 221 and rotates the rear wheel 224 that is 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; After rear sleeve is set in corresponding one on traveller, rear torsion spring set is located on corresponding rear traveller, and is positioned within rear sleeve;
Back shield is provided with two and connects boss 231 afterwards, and each rear connection boss is provided with rear axis hole 232 and the load flange 233 along rear luggage carrier horizontal direction evagination; Each rear connection boss and a corresponding attaching parts are rotationally connected by the bearing pin 100 through rear axis hole and the second pivoted hole; Load flange, in the process of rotating around the second pivoted hole along with rear connection boss, can be connected to the gathering bearing area of attaching parts and launch in bearing area, and then band follower link rotates.
As shown in Figure 18, in the present embodiment, coupling mechanism 3 comprises two front pitmans 31 of the left and right sides end being arranged on front luggage carrier rear end, be fixedly installed on the locating wheel 32 on each front pitman, be arranged on pitman 33 after two of the left and right sides end of rear luggage carrier front end, be fixedly installed on the connection flange 34 on each rear pitman, the axostylus axostyle 35 that after running through two, pitman also can move back and forth in left-right direction, be fixedly installed on two annular gear platforms 36 on axostylus axostyle, for providing the screw thread spring 37 of reseting elasticity for axostylus axostyle, and for being rotationally connected the attachment bolt assembly 38 of each rear pitman and a corresponding locating wheel, the edge of each locating wheel is provided with two the arc shaped locating notches 321 be centrosymmetric, and each annular gear platform, in the process moved back and forth along with axostylus axostyle, embeds or shift out in a corresponding locating notch, described front vehicle frame assembly and Rear frame component can be superimposed after attachment bolt assembly 38 rotates 180 degree.
In the present embodiment, front apron is provided with the rotating junction 136 with pin-and-hole close to one end of front connection boss, and front apron is provided with two clamps 137 of protrusion away from one end of front connection boss; The bottom of pull bar and the rotating junction of front apron are rotationally connected, the middle part of pull bar can clamping connection between two clamps.In concrete practice, also pull bar can be fixedly installed on front apron.
When the present embodiment is in deployed condition, see shown in Fig. 1 to Figure 12, the upper surface of front luggage carrier and rear luggage carrier is in same plane, and front luggage carrier and rear luggage carrier are connected by coupling mechanism, and is embedded both lockings by locating wheel in the locating notch of corresponding locating wheel.Now in front vehicle 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 be connected on the front end face of anterior cannula 121, also make each front limit double wedge of anterior cannula rear end be embedded in corresponding front limit teeth groove simultaneously, front limit teeth groove thus have restriction rotating effect to anterior cannula, makes front vehicle wheel now perpendicular to front luggage carrier place plane, can roll to realize normally towing.In Rear frame component, back shield is perpendicular to rear luggage carrier place plane, and the rear load flange 233 connecting boss is connected in the gathering bearing area 246 of attaching parts, and this gathering bearing area in this condition, can prevent back shield from continuing to rotate forward; Rear expansion bearing surface 243 in each attaching parts is parallel to back shield place plane, and be connected on the aft end face of corresponding rear sleeve, the each rear spacing double wedge of rear sleeve front end is made to be embedded in rear spacing teeth groove, rear spacing teeth groove thus there is restriction rotating effect to rear sleeve, make rear wheel now perpendicular to rear luggage carrier place plane, can roll to realize normally towing.
The concrete structure that the present embodiment is in flat is shown in shown in Figure 13 to Figure 14, under deployed condition shown in Fig. 1, external force promotes back shield and rotates backward around rear axis hole, until load flange 233 is connected in the expansion bearing area 247 of attaching parts, now the upper surface of back shield upper surface and rear luggage carrier is in same plane, under the position-limiting action of the expansion bearing area 247 of attaching parts, can prevent back shield from continuing to rotate backward; This structure also can use back shield as support board, effectively increase the loaded area of trailer.
The concrete structure that the present embodiment is in preliminary folded state is shown in shown in Figure 15 to Figure 17, under deployed condition shown in Fig. 1, external force driven forward back shield, because the load flange 233 on back shield is connected in the gathering bearing area 246 of attaching parts, thus band follower link rotates forward around the first pivoted hole 241, until after draw bearing surface 242 in and be connected on the aft end face of rear sleeve perpendicular to rear luggage carrier place plane, because the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, make rear sleeve in the rotation process of attaching parts, can under the elastic force effect of rear torsion spring 223, slippage certain distance backward, rear spacing double wedge is shifted out from corresponding rear spacing teeth groove, because rear spacing teeth groove no longer has restriction rotating effect to rear sleeve, so rear sleeve can under the twisting force of rear torsion spring, be connected on the basal surface of rear luggage carrier after driving rear wheel frame 222 and rear wheel 224 to turn an angle.In addition, under deployed condition shown in Fig. 1, external force promotes front apron backward, connect boss 131 before driving to rotate backward around front-axle hole 132, until front gathering bearing surface 133 is connected on the front end face of anterior cannula, because the central axis of front-axle hole and the distance a of front expansion bearing surface are greater than the distance b of this central axis and front gathering bearing surface, so rotate backward in process at back shield, anterior cannula can slippage certain distance forward, front limit double wedge is shifted out from corresponding front limit teeth groove, because front limit teeth groove does not have restriction rotating effect to anterior cannula, so anterior cannula can under the twisting force of front torsion spring, on the basal surface driving front wheel carrier and front vehicle wheel to turn an angle to be connected to front luggage carrier.
The concrete structure that the present embodiment is in complete folded state is shown in shown in Figure 19 to Figure 20, under folded state preliminary shown in Figure 15, pressing axostylus axostyle 35, axostylus axostyle is made to overcome the reseting elasticity of screw thread spring 37 and move a certain distance, the annular gear platform be fixed on axostylus axostyle is shifted out from a corresponding locating notch 321, thus can folding carrier and rear luggage carrier, when front luggage carrier or rear luggage carrier being rotated 180 degree and making both superimposed, also after namely making the basal surface of front vehicle frame assembly adjoin the basal surface of Rear frame component, unclamp axostylus axostyle, axostylus axostyle moves and resets under the reseting elasticity of screw thread spring 37, annular gear platform is made again to embed in another locating notch 321 corresponding, lock front luggage carrier and rear luggage carrier, both can not be separated themselves.
In addition, the present embodiment also has a characteristic, and exactly after attachment bolt assembly 38 is pulled down, front vehicle frame assembly and Rear frame component all can independently become two-wheeled folding trailer; For front vehicle frame assembly, pull bar continues as towing holding rod, and front luggage carrier continues as luggage carrier; But for Rear frame component, be that back shield is as support board using the axostylus axostyle in Rear frame component as towing holding rod.
In sum: front apron and front luggage carrier are rotationally connected, and front apron can turn to front luggage carrier superimposed, and adjacent before the upper surface of luggage carrier arrange; Front vehicle wheel can turn to front luggage carrier superimposed; Back shield and rear luggage carrier are rotationally connected, and back shield can turn to rear luggage carrier superimposed, and the upper surface of adjacent rear luggage carrier is arranged; Front luggage carrier and rear luggage carrier can turn to superimposed, and the basal surface that the basal surface of front luggage carrier adjoins rear luggage carrier is arranged.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (1)
1. a portable Four-wheel foldable trailer, comprises front vehicle frame assembly (1), Rear frame component (2) and rotates the coupling mechanism (3) connecting front vehicle frame assembly and Rear frame component, it is characterized in that: front vehicle frame assembly comprises front luggage carrier (11), two front wheel assemblies (12), the front apron (13) being arranged on front luggage carrier front end and the pull bars (14) be arranged on front apron, Rear frame component comprising rear luggage carrier (21), two rear wheel assemblies (22), being arranged on the back shield (23) of rear luggage carrier rear end and two attaching partss (24) for connecting back shield and rear luggage carrier, each front wheel assemblies comprises the front wheel carrier (122) with anterior cannula (121), front torsion spring (123) and rotates the front vehicle wheel (124) be arranged on front wheel carrier, each rear wheel assemblies comprises the rear wheel frame (222) with rear sleeve (221), rear torsion spring (223) and rotates the rear wheel (224) be arranged on rear wheel frame, front apron and front luggage carrier are rotationally connected, and front apron can turn to front luggage carrier superimposed, and the upper surface of adjacent front luggage carrier is arranged, front vehicle wheel can turn to front luggage carrier superimposed, back shield and rear luggage carrier are rotationally connected, and back shield can turn to rear luggage carrier superimposed, and the upper surface of adjacent rear luggage carrier is arranged, front luggage carrier and rear luggage carrier can turn to superimposed, and the basal surface that the basal surface of front luggage carrier adjoins rear luggage carrier is arranged, 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 the rear limiting block platform (212) of annular, and 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 attaching parts is provided with the first pivoted hole (241), rear gathering bearing surface (242), rear expansion bearing surface (243) and draws the rear arc transition face (244) of bearing surface and rear expansion bearing surface after connecting in, after each attaching parts and corresponding one, traveller is rotationally connected by the bearing pin (100) through the first pivoted hole and rear pin-and-hole (214), and the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, each rear expansion bearing surface is parallel to back shield place plane, and each rear gathering bearing surface is perpendicular to back shield place plane, the rear end of each attaching parts being provided with the second pivoted hole (245) for being rotationally connected with back shield, drawing bearing area (246) in and launching bearing area (247), draw bearing area in and be positioned at the side of the second pivoted hole away from the first pivoted hole, launch bearing area and be positioned at the side of the second pivoted hole close to the first pivoted hole, the front end of each rear sleeve is provided with the rear spacing double wedge (225) matched with each rear spacing teeth groove, after rear sleeve is set in corresponding one on traveller, rear torsion spring set is located on corresponding rear traveller, and is positioned within rear sleeve, back shield connects boss (231) after being provided with two, each rear connection boss is provided with rear axis hole (232) and the load flange (233) along rear luggage carrier horizontal direction evagination, each rear connection boss and a corresponding attaching parts are rotationally connected by the bearing pin (100) through rear axis hole and the second pivoted hole, load flange, in the process of rotating around the second pivoted hole along with rear connection boss, can be connected to the gathering bearing area of attaching parts and launch in bearing area, and then band follower link rotates, under deployed condition, external force driven forward back shield, load flange (233) on back shield is connected in the gathering bearing area (246) of attaching parts, thus band follower link rotates forward around the first pivoted hole (241), until after draw bearing surface (242) in and be connected on the aft end face of rear sleeve perpendicular to rear luggage carrier place plane, the central axis of the first pivoted hole and the distance of rear expansion bearing surface are greater than the distance of this central axis and rear gathering bearing surface, rear sleeve is in the rotation process of attaching parts, can under the elastic force effect of rear torsion spring (223), slippage certain distance backward, rear spacing double wedge is shifted out from corresponding rear spacing teeth groove, because rear spacing teeth groove no longer has restriction rotating effect to rear sleeve, so rear sleeve can under the twisting force of rear torsion spring, be connected on the basal surface of rear luggage carrier after driving rear wheel frame (222) and rear wheel (224) to turn an angle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379693.5A CN103407325B (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310379693.5A Division CN103407325B (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105292209A true CN105292209A (en) | 2016-02-03 |
Family
ID=49600389
Family Applications (10)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868310.XA Withdrawn CN105365865A (en) | 2013-08-27 | 2013-08-27 | Portable four-wheel foldable trailer |
| CN201510868253.5A Withdrawn CN105291690A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding type trailer convenient to carry |
| CN201510868307.8A Withdrawn CN105501269A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer with front frame assemblies and rear frame assemblies capable of being overlapped |
| CN201510868260.5A Pending CN105460054A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding type trailer with front frame assembly and back frame assembly capable of being folded |
| CN201510869460.2A Withdrawn CN105292209A (en) | 2013-08-27 | 2013-08-27 | Four-wheel foldable type trailer |
| CN201510868338.3A Pending CN105292208A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer provided with coupling mechanism |
| CN201510873551.3A Pending CN105346576A (en) | 2013-08-27 | 2013-08-27 | Portable four-wheel folding type trailer |
| CN201510868308.2A Pending CN105416354A (en) | 2013-08-27 | 2013-08-27 | Four-wheeled folding trailer with coupling mechanism |
| CN201310379693.5A Active CN103407325B (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
| CN201510868259.2A Withdrawn CN105291691A (en) | 2013-08-27 | 2013-08-27 | Easily-carried four-wheeled folding trailer |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868310.XA Withdrawn CN105365865A (en) | 2013-08-27 | 2013-08-27 | Portable four-wheel foldable trailer |
| CN201510868253.5A Withdrawn CN105291690A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding type trailer convenient to carry |
| CN201510868307.8A Withdrawn CN105501269A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer with front frame assemblies and rear frame assemblies capable of being overlapped |
| CN201510868260.5A Pending CN105460054A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding type trailer with front frame assembly and back frame assembly capable of being folded |
Family Applications After (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510868338.3A Pending CN105292208A (en) | 2013-08-27 | 2013-08-27 | Four-wheel folding trailer provided with coupling mechanism |
| CN201510873551.3A Pending CN105346576A (en) | 2013-08-27 | 2013-08-27 | Portable four-wheel folding type trailer |
| CN201510868308.2A Pending CN105416354A (en) | 2013-08-27 | 2013-08-27 | Four-wheeled folding trailer with coupling mechanism |
| CN201310379693.5A Active CN103407325B (en) | 2013-08-27 | 2013-08-27 | A kind of Four-wheel foldable trailer |
| CN201510868259.2A Withdrawn CN105291691A (en) | 2013-08-27 | 2013-08-27 | Easily-carried four-wheeled folding trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (10) | CN105365865A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346575B (en) * | 2015-11-23 | 2017-12-29 | 长江大学 | Folding lifts carrying dolly |
| 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 |
| CN113006502B (en) * | 2021-03-03 | 2021-12-03 | 乾日安全科技(北京)有限公司 | Anti-falling device of building element for building construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076056U (en) * | 1990-08-01 | 1991-05-01 | 苏州江南机电工业公司计量检测中心 | Folding vehicle for repairing motor car |
| FR2789039A3 (en) * | 1998-08-27 | 2000-08-04 | Chung Shiu Su | Push cart that incorporates main frame, handle, front support, two wheel frames, two wheels, retractable rod and a rear support |
| TWM314145U (en) * | 2006-10-19 | 2007-06-21 | Yee Shiuann Entpr Co Ltd | Improved structure for barrow |
| CN201362272Y (en) * | 2009-03-13 | 2009-12-16 | 简世坤 | Dual-purpose folding vehicle |
| CN202186404U (en) * | 2011-06-16 | 2012-04-11 | 黄怀高 | Foldable luggage cart |
| CN202827647U (en) * | 2011-12-09 | 2013-03-27 | 张文东 | Handcart |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161811A (en) * | 1991-09-05 | 1992-11-10 | Cheng Chiun Jer | Trolley with a foldable seat assembly |
| CA2139966A1 (en) * | 1994-09-21 | 1996-03-22 | Eugene Anthony Kazmark, Jr. | Collapsible cart |
| CN2203943Y (en) * | 1994-10-19 | 1995-07-26 | 苏中修 | Folding handcart |
| TWM280330U (en) * | 2005-07-06 | 2005-11-11 | Yewe Yih Entpr Co Ltd | Folding structure for trolley |
| US8100417B2 (en) * | 2010-01-19 | 2012-01-24 | Haiming Tsai | Handcart |
| CN201932204U (en) * | 2010-11-30 | 2011-08-17 | 无极县烟草专卖局 | Carrier of cigarette circulating box |
| TWM438426U (en) * | 2012-04-13 | 2012-10-01 | Hai-Ming Tsai | Trolley with coupled carrying plate and caster seat |
-
2013
- 2013-08-27 CN CN201510868310.XA patent/CN105365865A/en not_active Withdrawn
- 2013-08-27 CN CN201510868253.5A patent/CN105291690A/en not_active Withdrawn
- 2013-08-27 CN CN201510868307.8A patent/CN105501269A/en not_active Withdrawn
- 2013-08-27 CN CN201510868260.5A patent/CN105460054A/en active Pending
- 2013-08-27 CN CN201510869460.2A patent/CN105292209A/en not_active Withdrawn
- 2013-08-27 CN CN201510868338.3A patent/CN105292208A/en active Pending
- 2013-08-27 CN CN201510873551.3A patent/CN105346576A/en active Pending
- 2013-08-27 CN CN201510868308.2A patent/CN105416354A/en active Pending
- 2013-08-27 CN CN201310379693.5A patent/CN103407325B/en active Active
- 2013-08-27 CN CN201510868259.2A patent/CN105291691A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076056U (en) * | 1990-08-01 | 1991-05-01 | 苏州江南机电工业公司计量检测中心 | Folding vehicle for repairing motor car |
| FR2789039A3 (en) * | 1998-08-27 | 2000-08-04 | Chung Shiu Su | Push cart that incorporates main frame, handle, front support, two wheel frames, two wheels, retractable rod and a rear support |
| TWM314145U (en) * | 2006-10-19 | 2007-06-21 | Yee Shiuann Entpr Co Ltd | Improved structure for barrow |
| CN201362272Y (en) * | 2009-03-13 | 2009-12-16 | 简世坤 | Dual-purpose folding vehicle |
| CN202186404U (en) * | 2011-06-16 | 2012-04-11 | 黄怀高 | Foldable luggage cart |
| CN202827647U (en) * | 2011-12-09 | 2013-03-27 | 张文东 | Handcart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105292208A (en) | 2016-02-03 |
| CN103407325A (en) | 2013-11-27 |
| CN105291691A (en) | 2016-02-03 |
| CN105346576A (en) | 2016-02-24 |
| CN103407325B (en) | 2016-01-06 |
| CN105460054A (en) | 2016-04-06 |
| CN105291690A (en) | 2016-02-03 |
| CN105416354A (en) | 2016-03-23 |
| CN105501269A (en) | 2016-04-20 |
| CN105365865A (en) | 2016-03-02 |
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Application publication date: 20160203 |