CN2683505Y - Light duty mini-type carriage - Google Patents

Abstract

The utility model discloses a portable minitype quadricycle, the frame of the major structure of which comprises an upper frame and a lower frame at least one side of which is planar in an upper surface or a lower surface, a master pin location adapter and an actuating shaft installation apparatus. The anterior end of the upper frame is curved downward into a round arc, and the back end is folded down into an approximate right angle which is connected with the lower frame. The master pin location adapter and the actuating shaft installation apparatus are respectively mounted on the front end and the back end of the upper frame and the lower frame. The frame of the utility model is of simple and reliable structure, simple technics and easy processing. The entire vehicle made by the utility model is cabinet and portable, which is of the size of a common bicycle. Besides the utility model is of stable and safe running and comfortable ride, which solves the problems of the existing quadricycle that the existing quadricycle patent is of complicated structure, too big volume, bulky vehicle body, higher gravity center, etc. The utility model, associated with different driving means, can be made into a minitype quadricycle, a minitype four-wheel electric vehicle, a minitype fourth wheel power assist vehiclewhich are transportation tools for the substitute of walking in both city and country, besides, the utility model can be developed into general-purpose vehicles such as an amusement vehicle, a body-building vehicle, a touring bus, and a vehicle for the disabled, etc.

Description

Light mini-type four-wheel vehicle

Technical field

The utility model relates to a kind of four-wheeled, especially a kind of miniature four-wheel vehicle.

Technical background

Up to now, disclosed miniature quadricycle and the miniature four-wheel electric motor car that can travel on the footway, miniature four-wheel mini-motorcycle patent still do not have ripe product to come out both at home and abroad, reason is that these invention complex structures, volume are too big, car body is heavy, center of gravity is higher, and can't generally promote in town and country as traffic means of transport.The miniature four-wheel electric motor car that sell present market only uses on even running road surface for the disabled person.Tracing it to its cause, mainly is that vehicle frame ubiquity complex structure, function singleness, the parts as the four-wheeled agent structure are difficult for problems such as installation.According to the retrieval, ZL98800333.3 and ZL00236141.8 fail to solve this difficult problem equally as immediate documents.

Summary of the invention

The purpose of this utility model is for a kind of simple in structure, small volume and less weight being provided, can be used as traffic means of transport in town and country and having the light mini-type four-wheel vehicle of multiple function.

The purpose of this utility model is achieved through the following technical solutions: the agent structure vehicle frame of light mini-type four-wheel vehicle comprises that having a side in upper surface or the lower surface at least is putting on the shelf of plane and undercarriage, stub locating connector and axle drive shaft erecting device.The front end of putting on the shelf is bowed downward to circular arc, backward, upwards is converted into down trapezoidal and undercarriage then and joins, and the rear end of putting on the shelf is converted into approximate right angle downwards and undercarriage joins, and stub locating connector and axle drive shaft erecting device are installed in upper and lower two ends respectively.

Above-mentioned put on the shelf and undercarriage can be taked in-line or channel-section also can be taked T shape or rectangular cross section, put on the shelf with undercarriage between 1-4 bar strut bar is housed or is connected support.

In the stub locating connector of the present utility model, it is parallel and laterally be fixed in the undercarriage front end and the preceding bottom of putting on the shelf respectively that the bearings mounted upper and lower stub fixing steel plate of stub respectively is equipped with at two ends, and left and right front shock-proof device device upper and lower end is respectively with the front shock-proof device device axle that is installed in the front end of putting on the shelf and to go up the stub fixing steel plate outside hinged.

It is hinged that rear deflector band sleeve pipe in the axle drive shaft erecting device of the present utility model or grasswort one end pass through guide plate fixed mount and guide plate anchor shaft and undercarriage, the middle part of the other end and two connection pipes is affixed, the connection pipe two ends are with that the connecting strap of bearing is housed is affixed, left and right rear shock absorber respectively by the upper and lower axle of rear shock absorber with put on the shelf and the rear deflector rear end hinged.

Of the present utility model put on the shelf and sweptback deflecting bar registration arm is equipped with in the undercarriage front portion, the deflecting bar sleeve pipe is hinged by registration arm bearing and deflecting bar registration arm, and the deflecting bar that can slide up and down inserts the deflecting bar sleeve pipe and is fixed in by the quick-release dead ring on the appropriate location of deflecting bar sleeve pipe.Axis and brake axle erecting frame are equipped with in the undercarriage middle part, and axis and brake axle are housed on the erecting frame.The rear portion of putting on the shelf is provided with mounting groove, and seat is housed on the mounting groove, and the tie bolt on the seat passes mounting groove and cooperates with the coupling nut.

The beneficial effects of the utility model are: 1. the base portion body frame structure for automotive is simple and reliable, function is given prominence to, integrate full car carrying main body and assembling matrix.Vehicle frame of the present utility model has adopted and the different plank frame of bicycle conventional tubular vehicle frame, this improvement is simplified body frame structure for automotive greatly, and it is solid and reliable, plate frame becomes erecting stage, and full car owner wants parts to comprise that actuating device, steering hardware, brake gear, wheel, seat, shelf etc. can directly or by simple attaching parts be installed on the vehicle frame.

2. car load small volume and less weight can adopt the manually driven mode generally to promote in town and country as traffic means of transport.Because the significant improvement of body frame structure for automotive aspect adds and reduces height of seat and adopt steamboat footpath tire, make the utility model can dwindle full car body significantly and amass, alleviate car weight and lower the center of gravity.In the miniature quadricycle of preferred embodiment, full car body is long-pending only to be long 166cm * wide 50cm * high 95cm, and the car load that the employing metal frame is made nearly weighs 12-16kg, with common 24 " bicycle is suitable.The miniature quadricycle that adopts the plastics vehicle frame to make can also be done littler gentlyer.The miniature quadricycle of this small volume and less weight can substitute two-wheeled cycle fully and generally promote in town and country.

3. driving stability safety, ride comfort can be developed as multi-purpose function car.Four wheels of the present utility model are distributed in around the vehicle body and the low center of gravity structure, have improved the stability and the safety of travelling greatly; Front and back wheel adopts resilient suspension, takes semi-lying type to drive on the seat of band backrest, has increased the traveling comfort of taking; The crowd that the seat that can regulate and steering handwheel are fit to all ages and classes uses.Above function makes the utility model not only can be used as general traffic means of transport, can also be developed as fun vehicle, body-building vehicle, touristy coach, perambulator, loading onto battery, electrical motor or combustion engine can also become battery-driven car, self-propelled vehicle, mini-motorcycle or disabled person's car.

4. simple, the processing easily of technology, cost are lower.Of the present utility model put on the shelf and undercarriage can adopt that sheet metal is cut, foldable type do not need special joint, and welding and location are than being easier to, and the complete most of parts of car all can adopt the bicycle standardized parts, so can reduce investment, cut down finished cost.

Description of drawings

Fig. 1 is the utility model light mini-type four-wheel vehicle vehicle frame overall structure scheme drawing

Fig. 2 is embodiment design sketch of the utility model light mini-type four-wheel vehicle

Fig. 3 is a double steel plate formula stub locating connector structural representation

Fig. 4 is a double-crossbar type stub locating connector structural representation

Fig. 5 is a Shock absorber formula stub locating connector structural representation

Fig. 6 is A shape stub guide plate+Shock absorber formula stub locating connector structural representation

Fig. 7 is the utility model preferred embodiment stub locating connector and axle drive shaft erecting device structural representation

Fig. 8 is guide plate+Load Regulation balladeur train formula axle drive shaft erecting device structural representation

Fig. 9 is T shape guide plate+Shock absorber formula axle drive shaft erecting device structural representation

Figure 10 is the chair mounted scheme drawing

Figure 11 is the steering swivel scheme of installation

Figure 12 is a upper and lower rear end T shape connection diagram

Figure 13 is band link span half rolling rear deflector inhead type connection diagram

Figure 14 is half rolling rear deflector underneath type connection diagram

Figure 15 is a dual link square tube scheme drawing

Figure 16 is single square tube scheme drawing that connects

Among the figure:

1 undercarriage, 2 stub locating connectors, the 3 axle drive shaft erecting devices 4 of putting on the shelf

Connect support 5 axis and brake axle erecting frame 6 deflecting bar registration arms 7

Seat 8 mounting grooves 22 stub fixing steel plates 32,32 ' stub are installed bearing 33,33 '

Leading to steel cable 34,34 ' stub, 35,35 ' main pin connecting block 36,36 '

Steering swivel 37,37 ' track arm, 38,38 tierods 39

Rear shock absorber 43,43 ' bearing 44,44 ' rear shock absorber axle 45,45 '

Back guiding steel cable 46,46 ' axle drive shaft, 47 axis, 61 brake axles 62

Deflecting bar sleeve pipe 70 registration arm bearings 71,71 ' deflecting bar 72

Quick-release dead ring 73 tie bolts 81 coupling nuts 82

Stub location cross bar 311,311 ' front shock-proof device device 331,331 ' front shock-proof device device axle 332

A shape stub guide plate 341,341 ' connection pipe 441,441 ' connecting strap 442,442 '

Rear deflector 461 guide plate fixed mounts 462 guide plate anchor shafts 463

Load Regulation balladeur train 472 balladeur train governing screw 473 T shape guide plates 481

Pedal parts 611

The specific embodiment

Preferred embodiment of the present utility model: present embodiment is miniature quadricycle.As shown in Figure 1, its agent structure vehicle frame comprises and puts 1 and undercarriage 2, stub locating connector 3 and axle drive shaft erecting device 4 on the shelf.Put on the shelf 1 and undercarriage 2 make by sheet steel, thickness and width are respectively 4 millimeters and 80 millimeters, both respectively get in-line and channel-section.1 front end of putting on the shelf is bowed downward to circular arc, and it is affixed backward, upwards to be converted into down trapezoidal and undercarriage 2 then, and 1 rear end of putting on the shelf is converted into approximate right angle downwards and undercarriage 2 is affixed, for gaining in strength, put on the shelf 1 and undercarriage 2 between two connection supports 5 are housed.Stub locating connector 3 and axle drive shaft erecting device 4 are installed in respectively puts 1 and the front and back ends of undercarriage 2 on the shelf.

As shown in Figure 7, the stub locating connector 3 of present embodiment adopts double steel plate+Shock absorber formula.This device by stub fixing steel plate 32,32 ', stub install bearing 33,33 ', front shock-proof device device 331,331 ' and front shock-proof device device axle 332 form.Stub is installed bearing 33,33 ' and is loaded on upper and lower two stub fixing steel plate 32,32 ' two ends, stub fixing steel plate 32,32 ' is parallel and laterally be fixed in the undercarriage 2 and 1 front end of putting on the shelf respectively, and left and right front shock-proof device device 331,331 ' upper and lower end are hinged with the front shock-proof device device axle 332 and stub fixing steel plate 32 outsides that are installed in 1 front end of putting on the shelf respectively.For guaranteeing that the stub on the go accurately locatees, stub fixing steel plate 32, the 32 ' outside and installed additional leading between upper and lower to steel cable 34,34 '.Because the relative position in the motion between stub and the stub fixing steel plate often changes, so this routine stub is installed bearing 33,33 ' employing oscillating bearing.When mounted, upper and lower bearing axis upper end tilts 4.5 ° to the vehicle body rear side, to 6 ° of the inboard inclinations of vehicle body, to form suitable kingpin caster angle and Kingpin inclination angle.

Figure 11 has described the installation method of present embodiment wheel flutter.It is hinged that stub 35,35 ' is installed bearing 33,33 ' (not marking among the figure) and stub fixing steel plate 32,32 ' by stub, be installed in stub 35,35 ' main pin connecting block 36, the 36 ' outside and rear side be equipped with respectively left and right steering swivel 37,37 ' with left and right track arm 38,38 ', track arm 38,38 ' rear end and tierod 39 two ends are hinged, and wheel flutter is installed on the steering swivel 37,37 '.Owing to left and right front shock-proof device device 331,331 ' (Fig. 7) have been installed, so present embodiment can be realized the wheel flutter independent suspension.

As Fig. 1, shown in Figure 7, present embodiment adopts guide plate+Shock absorber formula axle drive shaft erecting device, this device is contained in the vehicle frame rear end, by end rear deflector 461 with well, guide plate fixed mount 462, guide plate anchor shaft 463, connection pipe 441,441 ', a left side, right connecting strap 442,442 ', a left side, right back Shock absorber 43,43 ', bearing 44,44 ' (bearing 44 ' and bearing 44 left-right symmetric, do not mark in the accompanying drawing, down together), on the rear shock absorber, lower shaft 45,45 ' forms, rear deflector 461 band sleeve pipes or grasswort one end are hinged with undercarriage 2 by guide plate fixed mount 462 and guide plate anchor shaft 463, the other end and two connection pipes 441,441 ' middle part is affixed, connection pipe 441,441 ' two ends with antifriction-bearing box 44 is housed, 44 ' connecting strap 442,442 ' is affixed, a left side, right back Shock absorber 43,43 ' respectively by on the rear shock absorber, lower shaft 45,45 ' with put on the shelf 1 and rear deflector 461 rear ends hinged.Accurately locate for assurance trailing wheel on the go, symmetry has been installed back guiding steel cable 46,46 ' between connection pipe 441 outsides and the guide plate anchor shaft 463.Axle drive shaft 47 (Fig. 1) passes bearing 44,44 ', and flywheel is equipped with at its relative position with sprocket wheel, middle part, and an end and a trailing wheel are affixed, and the other end rotates to form differential by bearing and another trailing wheel loose joint.

As shown in Figure 1, axis and brake axle erecting frame 6 are equipped with in undercarriage 2 middle parts of present embodiment, and erecting frame 6 makes present embodiment realize that manpower drives by bearing installation bicycle middle shaft 61 and pedal parts 611.Pedal parts 611, axis 61, sprocket wheel, chain have been formed actuating device of the present utility model together with above-mentioned flywheel, axle drive shaft 47.

As shown in Figure 1, put on the shelf 1 with undercarriage 2 front portions be fixed with recede and with the plane deflecting bar registration arm 7 of the shape left and right sides at 45 angle roughly, deflecting bar sleeve pipe 70 is hinged with deflecting bar registration arm 7 by registration arm bearing 71,71 ', and deflecting bar 72 insertion deflecting bar sleeve pipes 70 and being fixed in by quick-release dead ring 73 on the appropriate location of deflecting bar sleeve pipe 70 (this position can vary with each individual) can slide up and down.Steering handwheel (Fig. 2) is equipped with on deflecting bar 72 tops.Adopt steering handwheel to turn to and not only promoted class of the present utility model, can also increase driving enjoyment greatly.Above-mentioned deflecting bar registration arm 7, deflecting bar sleeve pipe 70, registration arm bearing 71,71 ', deflecting bar 72, quick-release dead ring 73 and aforesaid stub locating connector, stub 35,35 ' shown in Figure 11, main pin connecting block 36,36 ', steering swivel 37,37 ', track arm 38,38 ', tierod 39 are formed the steering hardware of present embodiment together with attached steering gear not shown in the figures.

As shown in Figure 1, be loaded on the axis at present embodiment undercarriage 2 middle parts and the brake axle erecting frame 6 brake axle 62, brake pedal 621 and parking brake pull bar (unnumbered among the figure) are housed.The bicycle contracting brake box concentric with bearing 44,44 ' can be installed in left and right connecting strap 442 in the axle drive shaft erecting device 4, the 442 ' outside, the axle sleeve of two trailing wheels is inboard can install band-type brake dish (accompanying drawing does not all mark) with the contracting brake box corresponding position, and the brake drive disk assembly that contracting brake box and band-type brake dish do not show together with brake pedal 621, parking brake pull bar, steering-wheel-mounted hand brake handle (not marking among the figure) and other accompanying drawing is formed the brake gear of present embodiment.

As shown in figure 11,1 rear portion of putting on the shelf is provided with mounting groove 22, and the seat 8 that plastics are made is housed on the mounting groove 22, and the tie bolt 81 on the seat 8 passes mounting groove 22 and cooperates with coupling nut 82, makes seat 8 regulate and to be fixed on the appropriate location in front and back.Seat 8 moves forward and backward the up-down adjustment that cooperates deflecting bar 72, and the crowd who makes present embodiment can be fit to all ages and classes uses, and has solved along with child age increases the problem that need constantly change trains.In addition, the vehicle frame rear end can be provided with shelf, and front end can be installed seat for children, has both made full use of the space, makes it have more function again.

As shown in Figure 2, the car load made from above-mentioned vehicle frame cooperates the small diameter wheel that adopts front-wheel 16 ", trailing wheel 20 ", makes that full car body is long-pending can be contracted to long 166cm * wide 50cm * high 95cm, and car load nearly weighs 12-16kg, with common 24 " bicycle is suitable.This small volume and less weight, the miniature quadricycle of taking safety and comfort can substitute two-wheeled cycle fully and generally promote in town and country.

Except above preferred embodiment, each main component part of the utility model comprises that vehicle frame, actuating device, steering hardware, brake gear etc. can also have numerous embodiments.The variation of these different component parts, different embodiments and combination can be formed more embodiment.

One, vehicle frame

Vehicle frame is the agent structure and the skeleton of miniature four-wheel vehicle, and the vehicle frame on complete meaning is not only the carrying main body of full car, also should become the equipment matrix and the erecting stage of complete each major part of car.Vehicle frame is a main inventive point of the present utility model, and its greatest improvement part is to change traditional tubular type vehicle frame into plate frame.Except that preferred embodiment, the vehicle frame each several part can also have other

Embodiment.

(1) puts on the shelf and undercarriage

1, section: put on the shelf and 1 not only can take as the described in-line of preferred embodiment and channel-section (ginseng Fig. 1, Fig. 7, Figure 12-Figure 16) with undercarriage 2, but also can take T shape or rectangular cross section, no matter take which kind of section, its upper surface or lower surface all should have the plane, so that various parts are installed, in-line section both sides can add strap stiffener.

2, connection mode and shape: put on the shelf 1 with undercarriage 2 two ends can to bend to circular arc or straight line and the other side affixed, but the undercarriage more than 2 as girder is taked linear, so general 1 front and back ends of putting on the shelf that adopts is bowed downward to the affixed form of circular arc or straight line and undercarriage 2.Upper and lower rear end joins and can take closed (as Fig. 1, shown in Figure 7), also can take T shape to intersect formula (as shown in figure 12).In addition, arc type, front and back arc type, trapezoidal formula etc. behind the straight line before upper and lower connection can also be taked.For increasing frame strength, 1-4 bar strut bar can also be installed between two or connect support 5 (see figure 1)s.

3, material: put on the shelf and 1 can make with carbon steel, alloy steel, carbon fibre or highstrenghtpiston with undercarriage 2.The about 3-5 millimeter of the thickness of sheet metal vehicle frame, width is the 40-120 millimeter, its advantage is that to have high strength, high rigidity, cost low, but heavy slightly.The carbon fibre vehicle frame is in light weight, high strength, high rigidity, and certain elasticity is arranged, but cost is higher, is fit to exploitation luxury car.But the one-shot forming in light weight of plastics vehicle frame, but strength and stiffness are relatively poor, are fit to make the low speed perambulator, as be made into the human car, need to increase thickness and width, and reinforce with metal parts at main stress point.

(2) stub locating connector

Except the described double steel plate of preferred embodiment+Shock absorber formula, can also take following four kinds of stub locating connectors:

1, double steel plate formula

As shown in Figure 3, this device is installed bearing 33,33 ' by upper and lower stub fixing steel plate 32,32 ' with stub and is formed (in described herein four kinds of stub locating connectors, except that " double-crossbar type " stub bearing 33,33 ' is installed and is adopted the end bar joint bearing, all the other all adopt oscillating bearing).Upper and lower stub fixing steel plate 32,32 ' is parallel and laterally be fixed in the undercarriage 2 and 1 front end of putting on the shelf respectively, and upper and lower stub fixing steel plate 32,32 ' two ends are equipped with stub bearing 33,33 ' is installed.

2, double-crossbar type

As shown in Figure 4, this device by upper and lower stub location cross bar 311,311 ' and stub bearing 33,33 ' be installed formed.Upper and lower stub location cross bar 311,311 ' is parallel and laterally be fixed in the undercarriage 2 and 1 front end of putting on the shelf respectively, and cross bar 311,311 ' two ends, upper and lower stub location are equipped with stub bearing 33,33 ' is installed.Upper and lower stub location cross bar 311,311 ' the available alloy pipe, spring steel or carbon fibre are made.

3, Shock absorber formula

As shown in Figure 5, this device is installed bearing 33,33 ' and is formed by left and right front shock-proof device device 331,331 ', front shock-proof device device axle 332, stub fixing steel plate 32 ', stub.Front shock-proof device device axle 332 and two ends are equipped with stub that bearing 33,33 ' stub fixing steel plate 32 ' are installed are parallel and laterally be fixed in put on the shelf 1 preceding upper end and preceding lower end respectively, and left and right front shock-proof device device 331,331 ' upper and lower end are hinged with front shock-proof device device axle 332 and stub fixing steel plate 32 ' respectively.Axle can directly be installed left and right main pin connecting block 36,36 ' as left and right stub 35,35 ' in this routine Shock absorber, and then left and right steering swivel 37,37 ' and left and right track arm 38,38 ' (not marking in the accompanying drawing) is installed.

4, A shape stub guide plate+Shock absorber formula

As shown in Figure 6, this device is installed bearing 33,33 ' by upper and lower A shape stub guide plate 341,341 ', front shock-proof device device 331,331 ', front shock-proof device device axle 332 and stub and is formed.Upper and lower A shape stub guide plate 341,341 ' top are equipped with stub bearing 33,33 ' are installed, the other end is hinged with undercarriage 2 and 1 the front end symmetry of putting on the shelf respectively, and left and right front shock-proof device device 331,331 ' upper and lower end are hinged with the front shock-proof device device axle 332 that is installed in 1 front end of putting on the shelf and upper and lower A shape stub guide plate 341, the 341 ' outside respectively.Upper and lower A shape stub guide plate 341,341 ' available steel plate or carbon fibre are made

In above-mentioned stub locating connector, be to guarantee stub and wheel flutter accurate location under steam, all can symmetry install additional left and right leading between upper and lower stub fixing steel plate 32,32 ', upper and lower stub location cross bar 311,311 ', front shock-proof device device axle 332 and upper and lower A shape stub guide plate 341,341 ' the outside and upper and lower to steel cable 34,34 ' (Fig. 3, Fig. 4, Fig. 5, Fig. 7).The installation of stub locating connector 3 must be satisfied such requirement: stub is installed bearing 33, the upper and lower line of centers of 33 ' homonymy upper end must tilt 2 °-8 ° to vehicle body rear side and inboard respectively, left and right steering swivel 37,37 ' lateral has a down dip 0.5 °-1.5 °, to form suitable kingpin caster angle, Kingpin inclination angle and cam angle of front wheel.

(3) axle drive shaft erecting device

Preferred embodiment has adopted guide plate+Shock absorber formula axle drive shaft erecting device, can adopt following dual mode that axle drive shaft is installed in addition:

1, guide plate+Load Regulation balladeur train formula

As shown in Figure 8, this device by rear deflector 461, Load Regulation balladeur train 472, balladeur train governing screw 473, forward and backward connection pipe 441,441 ', left and right connecting strap 442,442 ' and bearing 44,44 ' form.Rear deflector 461 front and back ends are affixed with undercarriage 2 and two connection pipes 441,441 ' middle part respectively, forward and backward connection pipe 441,441 ' two ends with bearing 44 is housed, 44 ' left and right connecting strap 442,442 ' is affixed, the Load Regulation balladeur train 472 that is installed on rear deflector 461 middle parts can slide along undercarriage 2 and rear deflector 461 front and back, and balladeur train 472 is fixed on the appropriate location of undercarriage 2 by balladeur train governing screw 473, decide because of load fixing position.Rear deflector 461 both can be taked the straight-plate-type shown in this example, also can take described end band sleeve pipe of preferred embodiment or grasswort formula (see figure 7), can also take as a Figure 13-end half rolling shown in Figure 16.Rear deflector 461 and following T shape guide plate 481 can be made with steel plate, carbon fibre or reinforced plastic, but this example is not owing to installing Shock absorber additional, so must make with steel plate.

2, T shape guide plate+Shock absorber formula

As shown in Figure 9, this device by T shape guide plate 481, guide plate fixed mount 462, guide plate anchor shaft 463, left and right rear shock absorber 43,43 ', the upper and lower axle 45,45 ' of rear shock absorber, left and right connecting strap 442,442 ' and bearing 44,44 ' form.The front end of T shape guide plate 481 band sleeve pipes or grasswort is hinged with undercarriage 2 by guide plate fixed mount 462 and guide plate anchor shaft 463, the rear end both wings respectively with bearing 44 is housed, 44 ' left and right connecting strap 442,442 ' is affixed, left and right rear shock absorber 43,43 ' respectively by the upper and lower axle of rear shock absorber 45,45 ' and put on the shelf 1 and T shape guide plate 481 rear ends hinged.

Shown in Fig. 7, Fig. 8 and Figure 14-16, connection pipe 441 in the axle drive shaft erecting device 4,441 ' section both can employing garden pipe or square tubes, also can adopt rectangular tube.Between rear deflector 461 and the connecting strap 442,442 ', both can use two-tube connection, also can connect,, can add link span (Figure 13) as connecting with two gardens pipe with single rectangular tube.The external diameter of garden pipe or square tube, the internal diameter of rectangular tube all should be greater than the external diameter of axle drive shaft 47, so that axle drive shaft rotates freely.Rear deflector 461 and T shape guide plate 481 both can be installed in undercarriage 2 upper ends (Fig. 1, Fig. 7), also can be installed in undercarriage 2 lower ends as shown in figure 14.

As described in preferred embodiment,, between connection pipe 441 and T shape guide plate 481 both sides and undercarriage 2, can also symmetry install back guiding steel cable or V-arrangement guiding steel disc 46,46 ' additional for guaranteeing the accurate location of trailing wheel on the go.

The utility model is made simple modifications, also can be made into the miniature four-wheel vehicle of f-w-d, rear-axle steering.Only need during improvement stub locating connector 3 is contained in the vehicle frame rear end, axle drive shaft erecting device 4 is contained in the vehicle frame front end and gets final product.Miniature four-wheel vehicle after the improvement is mixed small diameter wheel, and length can further shorten to 150-160cm, and this superminiature four-wheeled adds and adopts the plastics vehicle frame, can be more suitable for children and use.

Two, actuating device

Preferred embodiment has been summarized composition of actuating device and attaching method thereof.As shown in Figure 1 and Figure 2, the location of axis 61 solves by erecting frame 6 is set at undercarriage 2 middle parts, and erecting frame 6 both can be provided with separately, also can be provided with as two combine into one as described in the preferred embodiment.Can install bicycle speed-varying unit additional between sprocket wheel and the flywheel, make the utility model increase speed changing function.Except adopting as the described manpower driving of preferred embodiment, load onto battery, motor or combustion engine at undercarriage 2 of the present utility model, it further can also be improved to miniature four-wheel electric motor car, miniature four-wheeled vehicle or miniature four-wheel mini-motorcycle.These miniature four-wheel vehicle not only can be used to ride instead of walk, can also be widely used in body-building, travel, travel, deliver goods or use as disabled person's car.

Three, steering hardware

Steering hardware of the present utility model except adopt as preferred embodiment described with steering handwheel control turn to, can also resemble and adopt the ordinary bicycle handlebar control to turn to, though the carter turns to too late steering handwheel to turn to attractive in appearance and is rich in enjoyment, but can be on handlebar the direct mount hand brake and vacate segment space for the vehicle frame front portion seat is installed, make the utility model become the two-seater miniature four-wheel vehicle and suitable mothers and sons or lovers drive.

Four, brake gear

Brake gear of the present utility model is except adopting the described band brake type brake gear of preferred embodiment, can also adopt expanding brake type, disc brake formula brake gear, do not adopt at axle drive shaft under the situation of resilient suspension, even can adopt common lock or pincers lock formula brake gear.If adopt expanding brake type, disc brake formula brake gear, need only get final product at left and right connecting strap 442,442 ' last repacking rising lock or disc brake apparatus.

Five, other annex

Most important parts are seats 8 in the annex.Seat 8 except preferred embodiment described can before and after regulate, the angle between backrest and the seat support can also be regulated by adding some simple devices, to adapt to different riders' needs.

Claims (13)

1, a kind of light mini-type four-wheel vehicle, comprise vehicle frame, it is characterized in that: described vehicle frame comprises that having a side in upper surface or the lower surface at least is putting on the shelf (1) of plane and undercarriage (2), stub locating connector (3) and axle drive shaft erecting device (4), (1) front end of putting on the shelf is bowed downward to circular arc, backward, upwards being converted into down trapezoidal and undercarriage (2) then joins, putting on the shelf, (1) rear end is converted into approximate right angle downwards and undercarriage (2) joins, and stub locating connector (3) and axle drive shaft erecting device (4) are installed in respectively puts on the shelf (1) and the two ends of undercarriage (2).

2, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: described putting on the shelf (1) can be taked in-line or channel-section with undercarriage (2), also can take T shape or rectangular cross section, 1-4 bar strut bar is housed or be connected support (5) between put on the shelf (1) and the undercarriage (2).

3, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: the upper and lower stub fixing steel plate (32) in the described stub locating connector (3), (32 ') are parallel and laterally be fixed in undercarriage (2) front end respectively and (1) the preceding bottom of putting on the shelf, and upper and lower stub fixing steel plate (32), (32 ') two ends are equipped with stub bearing (33), (33 ') are installed.

4, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: the upper and lower stub in the described stub locating connector (3) is located cross bar (311), (311 ') is parallel and laterally be fixed in undercarriage (2) front end respectively and (1) the preceding bottom of putting on the shelf, and stub installation bearing (33), (33 ') are equipped with in upper and lower stub location cross bar (311), (311 ') two ends.

5, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: the front shock-proof device device axle (332) in the described stub locating connector (3) and two ends are equipped with stub that the stub fixing steel plate (32 ') of bearing (33), (33 ') is installed are parallel and laterally be fixed in the preceding upper end and the preceding lower end of put on the shelf (1) respectively, and left and right front shock-proof device device (331), (331 ') upper and lower end are hinged with front shock-proof device device axle (332) and stub fixing steel plate (32 ') respectively.

6, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: stub installation bearing (33), (33 ') are equipped with in the upper and lower A shape stub guide plate (341) in the described stub locating connector (3), the top of (341 '), the other end is hinged with the preceding bottom symmetry of undercarriage (2) front end and put on the shelf (1) respectively, and left and right front shock-proof device device (331), (331 ') upper and lower end are hinged with the front shock-proof device device axle (332) that is installed in (1) front end of putting on the shelf and A shape stub guide plate (341) outside respectively.

7, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: two ends are equipped with respectively that stub is installed bearing (33), the upper and lower stub fixing steel plate (32) of (33 '), (32 ') is parallel and laterally be fixed in undercarriage (2) front end respectively and (1) the preceding bottom of putting on the shelf in the described stub locating connector (3), and left and right front shock-proof device device (331), (331 ') upper and lower end are respectively with the front shock-proof device device axle (332) that is installed in (1) front end of putting on the shelf and to go up stub fixing steel plate (32) outside hinged.

8, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: rear deflector (461) band sleeve pipe or grasswort one end in the described axle drive shaft erecting device (4) are hinged with undercarriage (2) by guide plate fixed mount (462) and guide plate anchor shaft (463), the other end and two connection pipes (441), the middle part of (441 ') is affixed, connection pipe (441), (441 ') two ends with bearing (44) is housed, the connecting strap of (44 ') (442), (442 ') is affixed, a left side, right back Shock absorber (43), (43 ') is respectively by on the rear shock absorber, lower shaft (45), (45 ') with put on the shelf (1) and rear deflector (461) rear end hinged.

9, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: the rear deflector (461) in the described axle drive shaft erecting device (4) is preceding, the rear end respectively with undercarriage (2) and two connection pipes (441), the middle part of (441 ') is affixed, connection pipe (441), (441 ') two ends with bearing (44) is housed, the connecting strap of (44 ') (442), (442 ') is affixed, the Load Regulation balladeur train (472) that is installed on rear deflector (461) middle part can slide before and after undercarriage (2) and rear deflector (461), and by balladeur train governing screw (473) balladeur train (472) is fixed on the appropriate location of undercarriage (2).

10, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: T shape guide plate (481) the band sleeve pipe in the described axle drive shaft erecting device (4) or the front end of grasswort are hinged with undercarriage (2) by guide plate fixed mount (462) and guide plate anchor shaft (463), the rear end both wings are affixed with connecting strap (442), (442 ') that bearing (44), (44 ') are housed respectively, left and right rear shock absorber (43), (43 ') respectively by the upper and lower axle of rear shock absorber (45), (45 ') and put on the shelf (1) and T shape guide plate (481) rear end hinged.

11, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: described putting on the shelf (1) is equipped with sweptback deflecting bar registration arm (7) with undercarriage (2) front portion, deflecting bar sleeve pipe (70) is hinged with deflecting bar registration arm (7) by registration arm bearing (71), (71 '), and the deflecting bar that can slide up and down (72) inserts deflecting bar sleeve pipe (70) and is fixed on the appropriate location of deflecting bar sleeve pipe (70) by quick-release dead ring (73).

12, light mini-type four-wheel vehicle according to claim 1 is characterized in that: axis and brake axle erecting frame (6) are equipped with in described undercarriage (2) middle part, and axis (61) and brake axle (62) are housed on the erecting frame (6).

13, light mini-type four-wheel vehicle according to claim 1, it is characterized in that: described putting on the shelf (1) rear portion is provided with mounting groove (22), seat (8) is housed on the mounting groove (22), and the tie bolt (81) on the seat (8) passes mounting groove (22) and cooperates with coupling nut (82).

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