CN103407478A

CN103407478A - Connector for folded trailer

Info

Publication number: CN103407478A
Application number: CN2013103796916A
Authority: CN
Inventors: 胡妍
Original assignee: SUZHOU BILONG DECORATION ENGINEERING Co Ltd
Current assignee: Nantong Binwu Industrial Co Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2013-11-27
Anticipated expiration: 2033-08-27
Also published as: CN106080694A; CN106080693A; CN106080692A; CN106114573A; CN106080691A; CN106080690A; CN106114572A; CN106114570A; CN106114571A; CN103407478B

Abstract

The invention discloses a connector for a folded trailer. The front end of the connector is provided with a first pivot joint hole, a rear folded abutting surface, a rear unfolded abutting surface and a rear arc transition surface, the rear folded abutting surface is positioned right above the rear unfolded abutting surface and perpendicular to the rear unfolded abutting surface, the distance between the central axis of the first pivot joint hole and the rear unfolded abutting surface is longer than that between the central axis of the first pivot joint hole and the rear folded abutting surface, the rear end of the connector is provided with a second pivot joint hole, a folded carrying surface and an unfolded carrying surface, the folded carrying surface and the unfolded carrying surface are positioned below the second pivot joint hole, the folded carrying surface is positioned on one side of the second pivot joint hole far away from the first pivot joint hole, and the unfolded carrying surface is positioned on the other side of the second pivot joint hole close to the first pivot joint hole. The connector is reasonable and compact in structure and has complete functions, a rear baffle plate and a rear carrier can be overlapped and flattened, rear wheel components can be secondarily positioned, and rear wheels can stably roll and can be overlapped with the rear carrier.

Description

Attaching parts for folding trailer

Technical field

The present invention relates to the trailer technical field, relate in particular to a kind of attaching parts for folding trailer.

Background technology

People often use four-wheel trailer when shopping carrying article, can save strength for the user, but the four-wheel trailer volume is generally larger at present, can not fold gathering, carries inconvenience, while depositing, takes up room also very large.

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 the 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; The folding rear and vehicle frame laminating of weight tray, it launches rear arrange vertical with vehicle frame, be used to carrying luggage; Weight tray is connected a side and is provided with the vertical Stroke Control part of the wheel be fixedly connected with described weight tray with vehicle frame; Wheel stand has the second circular groove with the adaptive socket of described cylindrical pull bar, and the second circular groove upper surface is provided with the second spiral-guide face suitable with described the first spiral-guide face, the rotary torsion spring of fixedly taking a seat in the second circular groove; Pull bar vertically is arranged in the second circular groove, and the shaft hole sleeve of pull bar bottom is connected in the axle of the vertical Stroke Control part of wheel; When weight tray launches, the vertical formation control spare of described wheel forms pushing tow to the second circular groove, on guiding wheel under the combined action of described the first spiral-guide face and the second spiral-guide face is vertical, moves and launch to the both sides outward turning, when weight tray folded, wheel inward turning under the effect of described rotary torsion spring reclaimed and vertically moves down simultaneously; Vehicle wheel after folding is along edge at the bottom of the weight tray protruded from after folding.

This patent documentation is described detailed mechanism and the principle of work of collapsible wheel in detail, but this kind foldable luggage trolley is owing to being the push-and-pull vehicle that only has two-wheeled, and the carrying dynamics is less, can not be widely used in factory floor and use.

Summary of the invention

The purpose of this invention is to provide the comparatively rationally comparatively comprehensive attaching parts for folding trailer of compact, function of a kind of structure.

The technical scheme that realizes the object of the invention is: a kind of attaching parts for folding trailer, the front end of attaching parts are provided with the first pivoted hole, rear gathering bearing surface, rear expansion bearing surface and connect the rear rear arc transition face that draws bearing surface and rear expansion bearing surface in; Rear gathering bearing surface is positioned on rear expansion bearing surface and perpendicular to rear gathering bearing surface; The distance of the central axis of the first pivoted hole and rear expansion bearing surface is greater than the distance of this central axis and rear gathering bearing surface; It is characterized in that: the rear end of attaching parts is provided with the second pivoted hole, draws bearing area in and launches bearing area, draw bearing area in and launch the below that bearing area is positioned at the second pivoted hole, and 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 near the first pivoted hole.

Structure of the present invention is comparatively rationally compact, and function is comparatively comprehensive, can realize superimposed, the flattening of back shield and rear luggage carrier, can also carry out the secondary location to rear wheel assemblies, realizes the stable rolling of rear wheel and superimposed with rear luggage carrier.

The accompanying drawing explanation

Fig. 1 is a kind of perspective view of the present invention;

A kind of perspective view of Fig. 2 when to be attaching parts shown in Figure 1 observe from another angle;

Fig. 3 is a kind of perspective view while adopting four-wheel folding trailer that attaching parts shown in Figure 1 is made to be in deployed condition;

Fig. 4 is a kind of perspective view of front vehicle frame assembly in trailer shown in Figure 3;

Fig. 5 is a kind of lateral plan of front vehicle frame assembly shown in Figure 4;

Fig. 5 is a kind of lateral plan of front apron in front vehicle frame assembly shown in Figure 4;

Fig. 6 is a kind of exploded view of front vehicle frame assembly shown in Figure 4;

Fig. 7 is a kind of exploded view of front vehicle frame assembly shown in Figure 3;

Fig. 8 is a kind of perspective view of rear chassis assembly in trailer shown in Figure 3;

A kind of perspective view of Fig. 9 when to be rear chassis assembly shown in Figure 8 observe from another angle;

Figure 10 is a kind of lateral plan of rear chassis assembly shown in Figure 8;

Figure 11 is a kind of exploded view of rear chassis assembly shown in Figure 8;

Figure 12 is a kind of exploded view of rear chassis assembly shown in Figure 9;

Figure 13 is a kind of perspective view of trailer shown in Figure 3 while 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 trailer shown in Figure 3 while 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 trailer shown in Figure 3;

Figure 19 is a kind of perspective view of trailer shown in Figure 3 while being in complete folded state;

Figure 20 is a kind of lateral plan of trailer shown in Figure 19.

Shown in accompanying drawing, be labeled as: 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 chassis assembly 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, the first pivoted hole 241, rear gathering bearing surface 242, rear expansion bearing surface 243, rear arc transition face 244, the 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.

The specific embodiment

(embodiment 1)

The present embodiment is a kind of attaching parts for folding trailer, see illustrated in figures 1 and 2, the front end of attaching parts 24 be provided with the first pivoted hole 241, rear gathering bearing surface 242, rear expansion bearing surface 243 and connect after draw the rear arc transition face 244 of bearing surface and rear expansion bearing surface in; Rear gathering bearing surface is positioned on rear expansion bearing surface and perpendicular to rear gathering bearing surface; The distance of the central axis of the first pivoted hole and rear expansion bearing surface is greater than the distance of this central axis and rear gathering bearing surface; The rear end of attaching parts is provided with the second pivoted hole 245, draws bearing area 246 in and launches bearing area 247, draw bearing area in and launch the below that bearing area is positioned at the second pivoted hole, and 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 near the first pivoted hole.

(application examples 1)

Should use-case be a kind of four-wheel folding trailer that adopts above-described embodiment 1 to make, see Fig. 3 to Figure 20, comprise front vehicle frame assembly 1, rear chassis assembly 2 and the coupling mechanism 3 be used to connecting front vehicle frame assembly and rear chassis assembly.

Concrete structure while should use-case being in deployed condition is shown in figure, and 3 to Figure 12, and described front vehicle frame assembly comprises front luggage carrier 11, two front wheel assemblies 12, is arranged on the front apron 13 of front luggage carrier front end and is arranged on the pull bar 14 on front apron; The left and right sides end of front luggage carrier front end respectively is provided with a front sliding column 111 of giving 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 a plurality of 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 that front wheel carrier 122, front torsion spring 123 and rotation with anterior cannula 121 are arranged on the front vehicle wheel 124 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 within being positioned at anterior cannula; Before front apron is provided with two, connect boss 131, before each, connect boss and be provided with front-axle hole 132, front gathering bearing surface 133, front expansion bearing surface 134 and connect the front front arc transition face 135 that draws bearing surface and front expansion bearing surface in; As shown in Figure 6, the central axis of front-axle hole and front expansion bearing surface is greater than the distance b of this central axis and front gathering bearing surface apart from a; Before each, connecting boss is rotationally connected with front sliding column by the bearing pin 100 that passes front-axle hole and a corresponding front pin-and-hole; Before each, launch bearing surface and be parallel to plane, front apron place, each draws bearing surface in perpendicular to plane, front apron place.

Rear chassis assembly comprises rear luggage carrier 21, two rear wheel assemblies 22, be arranged on the back shield 23 of rear luggage carrier rear end be used to being connected two attaching partss 24 of back shield and rear luggage carrier.

The left and right sides end of rear luggage carrier rear end respectively is provided with a rearwardly projecting rear traveller 211, and after each, traveller is provided with the rear limiting block platform 212 of annular, and after each, rear end of limiting block platform is provided with a plurality of rear spacing teeth groove 213; After each, rear end of 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 connects the rear rear arc transition face 244 that draws bearing surface and rear expansion bearing surface in; After each attaching parts and corresponding one, traveller is rotationally connected by the bearing pin 100 that passes the first pivoted hole and rear pin-and-hole 214, and the distance of the central axis of the first pivoted hole and rear expansion bearing surface is greater than the distance of this central axis and rear gathering bearing surface; After each, launch bearing surface and be parallel to plane, back shield place, after each, draw bearing surface in perpendicular to plane, back shield place; The rear end of each attaching parts is provided with for the second pivoted hole 245 be rotationally connected with back shield, draws bearing area 246 in and launch 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 near the first pivoted hole; Each rear wheel assemblies comprises that rear wheel frame 222, rear torsion spring 223 and rotation with rear sleeve 221 are arranged on the rear wheel 224 on rear wheel frame; The front end of each rear sleeve is provided with the rear spacing double wedge 225 matched with spacing teeth groove after each; After rear sleeve was set in corresponding one, on traveller, rear torsion spring set was located on corresponding rear traveller, and within being positioned at rear sleeve; Back shield connects boss 231 after being provided with two, connect that boss is provided with rear axis hole 232 after each and along the load flange 233 of rear luggage carrier horizontal direction evagination; After each, connection boss and a corresponding attaching parts are rotationally connected by the bearing pin 100 that passes rear axis hole and the second pivoted hole; The load flange along with rear connection boss in the process that the second pivoted hole rotates, can be connected to the gathering bearing area of attaching parts and launch on bearing area, and then driving attaching parts and rotate.

As shown in Figure 18, in should use-case, coupling mechanism 3 comprises two front pitmans 31 of the left and right sides end that is 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 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 runs through two rear pitmans and can move back and forth along left and right directions, be fixedly installed on two annular gear platforms 36 on axostylus axostyle, be used to axostylus axostyle that the screw thread spring 37 of reseting elasticity is provided, and be used to 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 arc shaped locating notches 321 that are centrosymmetric, and each annular gear platform, in the process moved back and forth along with axostylus axostyle, embeds or shifts out in a corresponding locating notch, described front vehicle frame assembly and rear chassis assembly can be superimposed after attachment bolt assembly 38 rotates 180 degree.

In should use-case, an end that connects boss before front apron approaches be provided with the rotating junction 136 with pin-and-hole, and front apron is provided with two clamps 137 of protrusion away from an end of front connection boss; The bottom of pull bar and the rotating junction of front apron are rotationally connected, but the middle part clamping connection of pull bar is between two clamps.In concrete practice, also can be fixedly installed on pull bar on front apron.

While should use-case being in deployed condition, see that Fig. 3 is to shown in 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 connect by coupling mechanism, and in the locating notch that locating wheel embeds corresponding locating wheel, both is locked.Now in the 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 plane, front apron place, and be connected on the front end face of anterior cannula 121, simultaneously also make each front limit double wedge of anterior cannula rear end be embedded in corresponding front limit teeth groove, thereby the front limit teeth groove has the restriction rotating effect to anterior cannula, make now front vehicle wheel perpendicular to plane, front luggage carrier place, can roll to realize normally towing.In rear chassis assembly, back shield is perpendicular to plane, rear luggage carrier place, and the load flange 233 that connects afterwards boss is connected on the gathering bearing area 246 of attaching parts, and this draws bearing area under this state, can prevent that back shield from continuing to rotate forward; Rear expansion bearing surface 243 in each attaching parts is parallel to plane, back shield place, and be connected on the aft end face of corresponding rear sleeve, make each rear spacing double wedge of rear sleeve front end be embedded in rear spacing teeth groove, thereby rear spacing teeth groove has the restriction rotating effect to rear sleeve, make now rear wheel perpendicular to plane, rear luggage carrier place, can roll to realize normally towing.

The concrete structure that should use-case be in flat is shown in that Figure 13 is to shown in Figure 14, under deployed condition shown in Figure 3, external force promotes back shield and rotates backward around rear axis hole, until load flange 233 is connected on 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 that back shield from continuing to rotate backward; This structure can also be used back shield as support board, effectively increase the loaded area of trailer.

The concrete structure that should use-case be in preliminary folded state is shown in that Figure 15 is to shown in Figure 17, under deployed condition shown in Figure 3, external force promotes forward back shield, due to the load flange 233 on back shield, be connected on the gathering bearing area 246 of attaching parts, thereby driving attaching parts rotates forward around the first pivoted hole 241, until draw afterwards bearing surface 242 in perpendicular to plane, rear luggage carrier place and be connected on the aft end face of rear sleeve, due to the distance of the central axis of the first pivoted hole and rear expansion bearing surface, be greater than the distance of this central axis and rear gathering bearing surface, make rear sleeve in the rotation process of attaching parts, can be under the elastic force effect of rear torsion spring 223, slippage certain distance backward, make rear spacing double wedge spacing teeth groove, shift out after corresponding, because rear spacing teeth groove no longer has the restriction rotating effect to rear sleeve, so rear sleeve can be under the twisting force of rear torsion spring, drive after rear wheel frame 222 and rear wheel 224 turn an angle and be connected on the basal surface of rear luggage carrier.In addition, under deployed condition shown in Figure 3, external force promotes front apron backward, before driving, connecting boss 131 rotates backward around front-axle hole 132, until front gathering bearing surface 133 is connected on the front end face of anterior cannula, due to the central axis of front-axle hole and front expansion bearing surface, be greater than the distance b of this central axis and front gathering bearing surface apart from a, so in the process that rotates backward of back shield, anterior cannula is the slippage certain distance forward, make the front limit double wedge from corresponding front limit teeth groove, shifting out, because the front limit teeth groove does not have the restriction rotating effect to anterior cannula, so anterior cannula can be under the twisting force of front torsion spring, drive front wheel carrier and front vehicle wheel turn an angle and can be connected on the basal surface of front luggage carrier.

The concrete structure that should use-case be in complete folded state is shown in that Figure 19 is to shown in Figure 20, under preliminary folded state shown in Figure 15, press axostylus axostyle 35, make axostylus axostyle overcome the reseting elasticity of screw thread spring 37 and move a certain distance, make the annular gear platform be fixed on axostylus axostyle from a corresponding locating notch 321, shifting out, thereby can folding carrier and rear luggage carrier, when front luggage carrier or rear luggage carrier being rotated to 180 degree while making both superimposed, also namely make the basal surface of front vehicle frame assembly after the basal surface of rear chassis assembly, unclamp axostylus axostyle, axostylus axostyle moves and resets under the reseting elasticity of screw thread spring 37, make annular gear platform again embed in corresponding another locating notch 321, lock front luggage carrier and rear luggage carrier, make both can oneself not separate.

In addition, should also have a characteristic by use-case, exactly after attachment bolt assembly 38 is pulled down, front vehicle frame assembly and rear chassis assembly all can independently become the two-wheeled folding trailer; For the front vehicle frame assembly, pull bar continues as towing holding rod, and front luggage carrier continues as luggage carrier; But for rear chassis assembly, be after axostylus axostyle in chassis assembly as towing holding rod, back shield is as support board.

Obviously, the above embodiment of the present invention is only for example of the present invention clearly is 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 also giving all embodiments.And these belong to apparent variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.

Claims

1. attaching parts for folding trailer, the front end of attaching parts be provided with the first pivoted hole (241), rear gathering bearing surface (242), rear expansion bearing surface (243) and connect after draw the rear arc transition face (244) of bearing surface and rear expansion bearing surface in; Rear gathering bearing surface is positioned on rear expansion bearing surface and perpendicular to rear gathering bearing surface; The distance of the central axis of the first pivoted hole and rear expansion bearing surface is greater than the distance of this central axis and rear gathering bearing surface; It is characterized in that: the rear end of attaching parts is provided with the second pivoted hole (245), draws bearing area (246) in and launches bearing area (247), draw bearing area in and launch the below that bearing area is positioned at the second pivoted hole, and 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 near the first pivoted hole.