CN101574587A

CN101574587A - Wall racer toy vehicles

Info

Publication number: CN101574587A
Application number: CNA2009101363355A
Authority: CN
Inventors: 小伦纳德·R·克拉克; 小H·彼得·格林
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-11
Filing date: 2006-05-18
Publication date: 2009-11-11
Also published as: CN100482302C; CN1895712A; CN200980951Y

Abstract

A motorized toy vehicle or Wall Racer that is capable of operating on vertical and inverted horizontal surfaces such as walls and ceilings, while being manufacturable at reasonable cost and operable on batteries having sufficient lifetime as to be enjoyable. One or more battery-powered fans draw air from around all or defined portions of the periphery of the chassis of the Wall Racer through a carefully-shaped duct, so that the air in the portion of the duct immediately adjacent the surface flows at high velocity and low pressure; the relatively greater pressure of the surrounding air urges the vehicle against the surface, allowing it to operate on vertical surfaces, such as walls, or inverted on horizontal surfaces, such as ceilings.

Description

Wall racer toy vehicles

The present invention is that application number is 200610081339.4, and the applying date is on May 18th, 2006, and denomination of invention is dividing an application of wall racer toy vehicles.

Technical field

The present invention relates to the motorization toy car of wireless operating, this toy car can be operated on the surface of all directions, such as on the wall and on the ceiling and on the ground.

Background technology

The motorization toy car of wireless operating, just by the dolly driven of instruction of Motor Drive and response teletransmission, it is known that yes.At very accurate complicated toy car aspect suspension and the steering is that the also right and wrong that can realize are usually seen.Can on the surface of non-complete level, travel, and can be that people expect very much, such as can travel on the perpendicular walls or the toy car of inverted running on ceiling with the toy car of competitive price manufacturing and sale.

The 5th, 014, No. 803 patents of Urakami have been showed the device that a kind of " suction adhesion " moves to wall and along wall, such as empty the device of the inside of fuel reserve tank or like.The device that Urakami invented depends on relative vacuum; That is to say that gas is extracted out from hermetic unit by vacuum air pump, the sealing part is inner and between the walls formation at device, thereby the gas pressure of outside of deivce face makes this device rest on the wall.This makes that forming airtight in fact seal at the peripheral periphery of device necessitates.Forming airtight seal between mobile device and fixed surface is not a simple question, and these seals are mainly paid close attention in the invention of Urakami.The significant problem that overcomes is the frictional force of seal and between the walls, and moving and causing the aging of seal of this frictional force holdout device causes surface imperfection ground vacuum disappearance, and consumes and form the needed a large amount of electric power of effective vacuum.This method is not gratifying for toy car, thereby because toy car should be durable when being operated by children and the time that can operate abundant length under the prerequisite of limited number of batteries is unlikely and makes the user disappointing.

Summary of the invention

The invention provides a kind of vehicularized toy car, this toy car can travel on the vertical plane of for example wall and ceiling and horizontal plane on inverted running, can and can use with rational cost manufacturing simultaneously to have the battery-operated of sufficient operating period, this operating period is enough to make the user to one's heart's content.Dolly among the present invention, be called as wall racing car hereinafter, free-pouring air stream between the periphery of the inboard adjacent surface of use dolly, with the generation air pressure different with surrounding air, so the air pressure of surrounding air makes wall racing car rest on the surface.

More specifically, one or more battery-driven blower fan is drawn into gas from all parts or the specified portions of periphery, wall racing car chassis, this gas is by being drawn at undersurface of bottom disc and the moulding pipe of high-quality that forms between the face side by side, thus the gas flow at high speed in the section of tubing that directly closes on this surface.According to Bernoulli's theorem (Bernouilli ' sPrinciple), high velocity gas stream has low pressure; Difference between the relatively high pressure of low-pressure gas stream and ambient gas impels dolly to rest on the surface, allows on the vertical surface of this dolly attached to for example wall, perhaps inverted running on the horizontal plane of for example ceiling.Thereby impel dolly to rest on lip-deep different air pressure to be mentioned as " downforce " in the automatic industrial herein.Because gas stream must flow freely to obtain high speed, it is unnecessary for example using (and as mentioned above, this vacuum makes provides very difficulty of spendable dolly) required seal of wall crawl trolley of vacuum.In fact, gas enters into the pipeline that forms between undersurface of bottom disc and face arranged side by side be necessary, and this enters by careful control to guarantee stable and to guarantee within possible nonturbulent flow airflow range.

Provide and can between creeping on operation and the wall on the floor, have self-evident surprising interests by the dolly of the wireless operating of conversion, perhaps " toy value ", and wall racing car in this embodiment can realize these.Can realize this conversion for dolly, have only the fan starting that when dolly begins to creep on the wall, drives air-flow.

Other creative aspects of wall racing car are discussed below in the process and can manifest.

Description of drawings

If the accompanying drawing the present invention with reference to subordinate can be understood better.Wherein:

Fig. 1 and Fig. 2 have shown the perspective view of first embodiment of wall racing car and the side view of broken section respectively;

Fig. 3 and Fig. 4 have shown the perspective view of second embodiment of wall racing car and the side view of broken section respectively;

Fig. 5,6 and 7 is views of the transmission mechanism that uses in the embodiment of Fig. 3 and 4 demonstrations;

Fig. 8 and Fig. 9 have shown the perspective view of the 3rd embodiment of wall racing car and the side view of broken section respectively;

Figure 10 and Figure 11 have shown the perspective view of the 4th embodiment of wall racing car and the side view of broken section respectively;

Figure 12 has shown the detailed view of the successful shape of the pipeline that is used to form high velocity air, such as the pipeline that in second embodiment of Fig. 3 and Fig. 4, uses;

Figure 13 shows the cutaway view that is used for starting the switch of blower fan wall racing car turns to the wall operation from terrestrial operation when, prevents inverted operation on ceiling based on this switch of security reason, and Figure 13 A has shown the circuit that typical this switch was applied to simultaneously; And

Figure 14,15 and 16 have shown the perspective view of the wheel of some embodiment that are used for wall racing car respectively, the local side view of being analysed and observe, and amplification view; Wherein Figure 14 A has shown the corresponding part diagrammatic sketch with Figure 14, has illustrated selectable variation.

The specific embodiment

Clearly, one type toy wall racing car providing of expectation is similar to automobile, for example racing car, however the car of other kinds also has interests, and the car of these other kinds is truck or such as mechanized military car for example.First, second of wall racing car discussed herein and the 4th embodiment have elongated shape generally, to be suitable for the Hyundai Motor car body, rather than in other respects helping the operation of wall racing car, yet the 3rd embodiment is circular and can be used to assemble " flying saucer " of space vehicle type.All these embodiment class of operation seemingly have the difference that the different subjects shape causes.

For example, Fig. 1 and 2 has shown the perspective view of first embodiment of wall racing car and the side view of broken section respectively, and these mentioned figure are totally elongated and can be easily adapted for use in modern racing car or other car body (not shown).As mentioned above, for the downforce of impelling wall racing car to prop up by adjacent surface W (hereinafter in order to simplify " wall ") is formed, high-speed air flow is directed flowing to the Venturi tube of body bottom section, and this Venturi tube is formed between the lower surface and wall W on wall racing car chassis.According to Bernoulli's theorem, as mentioned above, this high-speed air flow has the air pressure of reduction with respect to surrounding air.Difference between the air pressure of this reduction and the surrounding air air pressure produces the D that makes a concerted effort, and is called as " downforce ", and wherein the direction as this power described herein for example makes dolly " press down " towards wall W.The size of downforce D is proportional with the region area that produces low pressure, and is proportional with the pressure differential of every unit area, thereby for realizing that this purpose region area and pressure differential must be suitable.

So as illustrated in fig. 1 and 2, blower fan 10 is assemblied in the Fan pipeline that extends traverse chassis 12, and driven from the part of the ancillary equipment on chassis 12, to suck high velocity gas stream at least by battery powered motor 11.Gas stream flows in the Venturi tube 15 of body bottom section, and this Venturi tube forms between the surface arranged side by side of chassis 12 lower surfaces and wall W, and gas stream chassis 12 " on " side is discharged from, that is to say in the side away from adjacency wall W.Downforce D produces owing to the low pressure of the high velocity gas stream in the Venturi tube of body bottom section and the pressure differential between the surrounding air as mentioned above; As mentioned above, the total amount of downforce size is proportional with the region area that produces low pressure, and is proportional with the pressure differential on the every bit.

In order to maximize the area of low pressure area, 12 edge 12a is drawn into realization along the chassis by avoiding air in this maximization, guarantee that just mainly 12 terminal 12b is drawn into air stream from the chassis, between the two partially sealed body is extended and formed in pliable and tough skirt section 14 12 towards wall W from the chassis, restriction from " the short cutting " of Fan pipeline chassis side air arranged side by side.One or more part of chassis lower external face is then set in the skirt section, is two herein, is drawn into the intake section of body bottom section Venturi tube at this portion gas, and this Venturi tube steering current flows into Fan pipeline.Therefore, gas mainly endways 12b be drawn into, this end has bigger radius to guarantee stably and within the possible range nonturbulent flow air-flow; Based on similar reason, the bottom surface 12c on chassis 12 is level and smooth.Therefore high velocity air extends through the pith of the whole length in chassis, guarantees to form sufficient downforce.

Comparatively speaking, among overall the 3rd embodiment of the wall racing car that in Fig. 8 and 9 (will thoroughly discuss below), shows for circle, the chassis lower surface outside have a few and discharge duct at the center between have certain distance, therefore the air-flow among this embodiment is radially and enters inside from all directions, form downforce around on the chassis without exception, and do not have the skirt section to need equipment.

As what set forth, pressure differential and the downforce that so forms are functions of air velocity, it can improve by following manner in a sense, this mode is the area of section that is reduced in the pipeline that forms between the downside on chassis and the wall W, just, reduce the ground clearance of wall racing car.Yet if area of section reduces too much, turbulent flow can hinder air-flow and can reduce the effect of expectation; Reduce ground clearance and also can improve the sensitivity of wall racing car for irregular surface and analogue.Do not have also to obtain to expect that the detailed theory of the optimization of effect calculates to carry out.For example, can be reduced, improved the operating time of each battery charge by the existing defective of optimizing pipe design Motor Drive blower fan steering current.The pipeline that uses in the embodiment of the test success of wall racing car and the detailed concrete condition of other assemblies provide below.

Get back in the discussion of first embodiment of Fig. 1 and Fig. 2, as what explained, chassis 12 is supported by two

relative driving wheels

16 and 18, and arbitrary end of 12 by relative castor 20 (just on the chassis, comprise that assembling is in order to wind the device perpendicular to the free moving runner of the axial rotation of turning cylinder) support, be positioned at any side on chassis near the above-mentioned driving wheel mid point therein and be spaced laterally apart mutually.Pass through conveyor-belt apparatus 22 shown on the chart,

relative driving wheel

16 and 18 is provided power by motor 24 respectively, the control signal that this motor provides electric current to provide with response wireless operating receiver 26 by battery pack 28.Except mention herein but the part that describes in detail, the entire infrastructure of these assemblies and operation all are not existing.Therefore, if two controlled driving wheels in the same direction 16 of motor and 18, wall racing car is moved on this direction, and conversion direction is by realizing in different directions or with different

capacity driving wheel

16 and 18 simultaneously.Castor 20 is motorless, is assemblied on the longitudinal centre line on chassis 12, and is used to keep appropriate space between the bottom surface 12c on chassis 12 and the wall W easily; The optimum position and the design of castor 20 are discussed below.

Because following reason, this " differential " drive scheme of demonstration be better than for example traditional wheel chassis, and this tradition wheel chassis has a pair of wheel and a pair of wheel that is used to control that power is provided.In order to realize that dolly can climb up perpendicular walls, sufficient downforce must be used, and makes dolly towards wall, not only can support that dolly overcomes gravity, and can provide sufficient tractive force to overcome gravity vertical thrust dolly.(comparatively speaking, the dolly that is provided at inverted running on the ceiling is comparatively simple, because the support of its needs self does not need vertical crawling.) guarantee that therefore good tractive force become very important.In order to maximize the effective tractive force that downforce provides, driving wheel is provided with between two parties, is positioned at the center of the pressure that is sent by downforce, thereby all in fact downforce directly are sent to driving wheel with maximization tractive force.

Thereby castor 20 is preferably mounted both not contact planes simultaneously, thereby supported at three point is always effective, driving

wheel

16 and 18 two of forming in three contact points.So provided motion is called as " jogging " herein, can shake gently before and after the axis of

driving wheel

16 and 18 by this trolley.So downforce balance on central actuating shaft, this downforce maximization tractive force allows dolly to be controlled by the differential driving of

relative driving wheel

16 and 18 simultaneously.

Comparatively speaking, if the four-wheel drive design is used, that is to say four driving wheels that have on the angle that is positioned at the rectangle chassis, provide the required gross tractive effort of downforce of pre-sizing will equal the tractive force that above-mentioned wall racing car obtains, but why not smooth four-wheel design meeting responsive more to the place of taking up an official post, surface.In addition, this dolly relates to the driving of controlling of two-wheeled at least and all four-wheels, will be more complicated, heavy and expensive.At last, this design will be referred to because the resistance of " tire friction " conversion direction of causing, just, and the frictional resistance that the tire tread of crossing each tire is caused by the different effectively radiuss of turn of " contact point ".For wall racing car shown in limiting drives the tire friction of design, narrow relatively tire is applicable to driving wheel 16 and 18.In order to improve aesthetic appearance, and on heavy back blanket or similar articles, operate, have the outer surface that broad additional wheel tyre surface that slightly the foam or the similar articles (not shown) by lightweight of minor radius form can be assembled to driving

wheel

16 and 18 in order to permit.

Fig. 3 and 4 has shown second embodiment of wall racing car.The product version the earliest of corresponding wall racing car appears being suitable in this embodiment.Figure 12 provides the detailed spatial information of relevant this embodiment, and pre-explanation of producing also provides below.

As shown in Figure 3, two air exhausters 38 are provided in this embodiment, and 40 cross central line is spaced laterally apart mutually along the chassis, and each blower fan all drives by motor 39, and this motor has the blower fan that directly is assemblied on the motor reel.Six driving wheels 42 are provided, and chassis 40 each side have three driving wheels, and on the chassis three driving wheels 42 of one side be meshing with each other (perhaps belt drives) thus together by the Motor Drive of the wireless operating of two separation.Wireless operating receiver and battery are not shown, and are common to those skilled in the art.Fig. 5,6 and 7 (following discussion) have shown preferred transmission mechanism and motor designs scheme.Therefore, as in the embodiment in figure 1, control by the differential driving of wheel and realize each side on chassis 40.Just as shown, skirt section 44 is provided again, mainly flows into blower fan discharge duct 46 from the end on chassis so that guarantee air-flow, and guarantees that successively the high velocity, low pressure gas stream of enough areas is provided to produce sufficient downforce.Explain as Fig. 4, middle a pair of wheel is lower a little than the wheel at two ends on the chassis, thereby realizes " jogging " and guarantee that the middle pair of driving wheels in the driving wheel always keeps well contacting with wall W.

The wheel at two ends, chassis swells (associated end that just extends beyond the chassis a little) with respect to the associated end on chassis a little to 42, thereby when dolly moved near wall on wall, wheel at first touched wall.Therefore what provide in the present embodiment six takes turns design and allows wall racing car to turn to wall from the floor in any direction.Therefore downforce is impelled towards the wall racing car of floor direction and is not stoped wall racing car just to climb wall at first, and blower fan 38 only reaches on chassis 40 and just is energized when with respect to the horizontal plane being predetermined inclination.Figure 13 has shown that preferred switch and Figure 13 A have shown the circuit of correspondingly controlling blower fan.

As implied above, Fig. 5,6 and 7 has shown two drive motors of six wheels that are used for the racing car of differential driving wall among the embodiment of Fig. 3 and 4 and the decision design of corresponding transmission mechanism.Fig. 5 has shown vertical view, and Fig. 6 and 7 has shown the cutaway view of 6-6 along the line and 7-7 respectively.Therefore, suppose in Fig. 5 wall racing car, so the top of figure is " left side ", and the bottom is " right side ", to the left and to the right drive electric motor 150 and 152 of the difference that provided is provided towards right travel.Motor 150 and 152 drives reduction transmission device 154 and 156 separately respectively; The gear support bearing of each transmission device, just around axle 158 rotations, thereby the gear from two transmission devices can be supported on the same axle 158 when turning to independently of each other.Transmission device 154 and 156 output gear be driven wheel 160 and 162 respectively, and this gear 160 and 162 can rely on the fixed axis 168 fixing with respect to sleeve wheel shaft 164,166 respectively, and therefore fixing with respect to gear 170,172 respectively.Gear 170,172 is fixed on the corresponding driving wheel 174,176, and further drive transmission 178,180, this transmission device 178,180 drives centre-driven gear 182,184, and this centre-driven gear 182,184 is fixed on the center drive 186,188.The also further drive transmission 190,192 of centre-driven gear 182,184; These transmission devices are driven wheel 194,196 successively again, and this gear is fixed on the wheel 198,200.The realization of this driving design is the state of the art; Transmission device and wheel shaft are shown and are assemblied on the metal frame 202 simultaneously, and this chassis will typically comprise casting component in product.

As mentioned, Figure 12 has shown the detailed view of body bottom section Venturi tube 50, and this Venturi tube forms between the lower surface on chassis 40 and the surface arranged side by side as wall W.Shown in Fig. 3 and 4, test in the successful version for one of second embodiment that this embodiment of body bottom section uses in wall racing car of the present invention.Figure 12 further provides the reference of the spatial detail on chassis 40.Having six diameters in this version is 2.524 " the whole length H in chassis of wheel be 11.828 "; In order to mesh vertical surface and therefore to make wall racing car to climb on the wall from the floor, the right wheelbase F of outside wheel is 9.50 ", thus wheel swells with respect to the chassis, that is to say, extends beyond the end on chassis 40 a little.Between center-wheel arbor and the wall W than between two ends wheel shaft pair and the wall W nearly 0.050 ", therefore " jogging " of expection be provided.

The Venturi tube 50 of body bottom section is vertically symmetrical about center line J, has only an end to show in detail in Figure 12.Show in detail as Figure 12 institute, be formed on the lower surface on chassis 40 and every " half " of the body bottom section pipe 50 between the wall W and include notch portion 50a, conversion portion 50b and exit portion 50c, above-mentioned part forms the transmission stably of leading to the Fan pipeline 46 that also has venturi-shaped, and blower fan is located in this Fan pipeline.The porch of 40 periphery on the chassis, air enter body bottom section Venturi tube each half, its intake section 50a by body bottom section Venturi tube 50 defines.The radius R that intake section 50a is formed on the bottom, chassis defines; In the version that shows, this radius is 1.164 ".Anterior wheel is to being positioned at the center of this radius with the right wheel shaft of rear wheel, and big slightly on radius, thereby as what write down, the surface of revolution of each tire swells a little with respect to the chassis end.Intake section 50a by streaming and with the conversion portion 50b smooth connection that forms of flat flat surface of expansion by the bottom, chassis; Because the pipeline 50 that forms at the bottom on chassis 40 and between the walls has the smallest cross-section area in this zone, the maximum downforce on maximum gas flow rate and the every unit area of therefore bringing forms herein.

The target of the Venturi tube 50 of design body bottom section is the length that maximization has the zone of smallest cross-section area in the optimization cross-sectional dimension, thereby provide air-flow level and smooth, preferably nonturbulent flow to flow into and flow out this zone, all these is in order to maximize air velocity.In order to guarantee air-flow stably, the cross section of lower surface that limits the chassis 40 of intake section 50a top boundary in detail is radioactive, and the respective cross-section that limits notch portion 50c top boundary is described as an oval part.In the successful version of described test, this ellipse contour is to use 2 " * 4 " ellipse drawing, this ellipse can obtain on " 30 spend " template of draftsman; That is to say that D and C yardstick are respectively 1 " and 2 ".As what explained, then, the length E of flat part 50b is 2.25 ", formed " pipeline plane ".Dolly based on the wheel at center to balance, thereby flat part 50b is parallel with wall, ground clearance G between the two is 0.098 ".Flat part 50b forms the level and smooth conversion lead to exit portion 50c, and as what put down in writing, its length is 2.00 " and be oval in the longitudinal cross-section.Exit portion 50c forms successively to venturi cross section, the center of Fan pipeline 46 46a and smoothly changes, and blower fan is arranged in this Fan pipeline.Among the two blower fan embodiment that describe in Fig. 3 and 4 and describe in detail in Figure 12, the axial dimension B of the narrow of this venturi cross section 46a is 1.00 "; Cross section 46a prolongs and passes chassis 50 to form horizontal " transmission slot ".Extend away from wall as it, transmit that slype part 46a then little by little vertically widens and along the longitudinal center line be separated to form two circular cross-section pipeline 46b, blower fan 38 is arranged in this pipeline; The diameter of blower fan, yardstick A is 1.625 ".

Be the main specifications that successful version is tested in wall racing car below, this wall racing car shown in Fig. 3 and 4, and in Figure 12 designated size:

Wheelbase (yardstick F) 9.5 " (front-wheel is to trailing wheel)

Wheelspan 5.8 " (center line is to center line, on the reduced point)

Body bottom section duct width 4.9 " (between the skirt section)

Chassis weight 584g

Tare 29g

Gross weight 613g

Distribution of weight (do not have vehicle body, do not support in the time of central axis)

Front axle 260g (44.5%)

Rear axle 324g (55.5%)

Road clearance (yardstick G) 0.098 "

Motor voltage 6V.Rated value (nickel metal hydride batteries of 5 joint 1.2V 1000mah)

Totally 4 amperes in downforce blower fan electric current

Pipeline fan (two)-diameter 1.625 ", 3 blades

Clean downforce 1280g altogether

Jogging (teeter) (central shaft side-play amount) 0.050 "

30,000 rev/mins of blower fans

Chassis itself can be with light gauge foam plastics castings, and the lower surface on this chassis is suitable for and the collaborative Venturi tube 50 that defines in surface of wall W.Following operation is easily, and these operations comprise: load module, for example bearing of the axle of load wheel, drive motor and gear or belt drives assembly, the controlled in wireless receiver, battery and motor and blower fan assembly unit, these are arranged in the recess that is assemblied in the chassis foamed plastics.Especially, the blower fan assembly unit can comprise the pipeline of duroplasts casting under alternative situation, and blower fan and drive motor are retained in this pipeline; The exit portion of body bottom section Venturi tube is followed by moulding to mate smoothly therein.

In the successful prototype of test, skirt section 44 (Fig. 3) is formed at " Arathene " film material, thereby this skirt section is set up size and is set up the position and spends outwardly-bent when contacting with wall with specified 45; Mould system sclerosis bar and can expect and prevent local buckling that this is bonded in Arathene skirt section lower limb, but separates a little with this skirt section.

Consider above-mentioned detailed disclosure of the present invention, those skilled in the art have no problem in realization of the present invention.Especially, be appreciated that battery (instantiation of example is provided) is provided for fan and driving wheel is supplied with power in the above, be appreciated that there are three driving wheels on every limit in the embodiment of Fig. 3 and 4, driving wheel interconnects and is connected to drive motor separately, this connects as Fig. 5, realize by transmission device shown in 6 and 7, perhaps realize, be appreciated that with radio transmitters and the right form of receiver and can be controlled individually by the signal motor that the operator provides by belt or gas methods.The executory above-mentioned aspect of the present invention belongs in the scope that those skilled in the art can realize.Drive respectively in six wheels each also within the scope of the invention, that is to say that eliminate the design of transmission device or belt, each wheel has independent electric motors, but this replacement scheme is considered to worthless, because it can cause the cost on the weight.

Fig. 8 and Fig. 9 have shown the 3rd version of wall racing car, have circular base plate 60 so that the profile of " flying saucer " to be provided in this version.In this version, two

driving wheels

62 and 64 are provided on the diameter corresponding point on chassis 60, and castor 66 is positioned on the relative edge, along the line of axis normal between driving wheel 62 and 64.This castor can be lifted from the plane that comprises driving wheel and castor a little, and (obviously the wall racing car of this version can not be finished the conversion of floor and between the walls so that above-mentioned " jogging " to be provided.) the downforce blower fan 68 that is positioned at the center provides, this blower fan is placed in the Venturi tube 70 and by motor 72 and drives.

Driving wheel

62 and 64 is driven by motor 74 and 76 respectively, and this motor response is from the control signal of controlled in wireless receiver 78, and

driving wheel

62 and 64 provides power by battery 80.

In this version, as mentioned above, the distance of having a few of discharge duct 70 and chassis 60 peripheries equates, thereby have a few on the chassis around 60 is equal towards the path that gas inside flows.Therefore, the skirt section there is no need, and gas stream flows into radially from circumferential perimeter.In addition, 60 the periphery on the chassis than low edge, radius is provided, shown in 60b, thereby the inlet opening part of the Venturi tube of body bottom section spreads on every side on the chassis circle-shapedly, and converge discharge duct 70 parts at body bottom section pipeline 82, large-scale or oval-shaped conversion equipment 60c is provided, to guarantee stably and the air-flow of nonturbulent flow in fact.As what explained, be formed at conversion portion preferred shallow coniform shape on the cross section of the body bottom section pipeline 82 of the bottom surface 60a on chassis 60 and between the walls, thereby along with its with respect to changing with discharge duct 70 radius centered, the area of section of pipeline 82 remains unchanged; The speed of inflow all remains unchanged in fact with the differential pressure that therefore applies in this way, is had a few thereby downforce is applied to the substantial of chassis 60 equably fully, just outside the pipeline 70.

Figure 10 and 11 has shown the more highest version of wall racing car, also has the chassis 90 of elongation, and this chassis is suitable for the assembling of model racing body or like.In this embodiment, single blower fan 92 is positioned at center chassis, is driven by motor 94, and is arranged in the discharge duct 96, and this discharge duct communicates with body bottom section Venturi tube 98, and this Venturi tube is formed between the bottom surface and wall W on chassis 90.Body bottom section pipeline 98 designs according to Figure 12 as mentioned above generally.

In this embodiment, single driving wheel 100 is positioned on the longitudinal centre line of dolly, near the center of downforce active force, but thereby an end that is disposed in towards the chassis can not hinder discharge duct 96, this driving wheel is by Motor Drive, the control signal that this motor provides electric power and response to be provided by controlled in wireless receiver (do not have the assembly of label all not shown) by battery.Two

castors

102 and 104 are assemblied in a relative end on chassis 90.Castor 102 can freely rotate along the axle perpendicular to wall W, and castor 104 also can rotate along same vertical axis simultaneously, but this rotation can only (referring to Figure 14 A, vide infra) within the certain angle compass.

Therefore, chassis 90 is laid on the tripod of being made up of driving wheel 100 and castor 102 and 104.If driving wheel 100 is driven so that orders about the direction motion of dolly one end towards the chassis, an end on this chassis is the end that driving wheel 100 is placed, that is to say, and on the right side of Figure 11, the castor hang behind, and dolly is along straight-line travelling; If driving wheel 100 is driven towards opposite direction (among Figure 11 counterclockwise), the castor 104 that is equipped with the angle stopper is along the axle rotation vertical with wall W, pivoting up to this is stopped at one or another angle boundary, so dolly turns to certain direction to reverse up to travel direction.Therefore the direction control of the wall racing car in the present embodiment is restricted in fact; This embodiment simplifies very much, therefore is suitable for most low-cost version of the present invention.

As mentioned above, Figure 14-16 shows perspective view, sectional view and the amplifier section sectional view of the castor 102 of some embodiment that are used for wall racing car respectively, and Figure 14 A has shown the partial view corresponding to Figure 14 simultaneously, has explained selectable variation.Castor 102 is shown reversing in these views, and it is juxtaposed in the drawings towards the surface of " top " to that is to say that castor has with wall W.The roller bearing 110 that contacts with wall W is supported by axle 112, and this axle 112 is assembled in order to rotation on turntable 114; Platform 114 is along axle A rotation, and this is perpendicular to still deviating from the direction that is limited by axle 112.In the embodiment that shows, turntable 114 is pressed on a large amount of balls 116 successively, and this ball-joint is loaded on the closed circle 118; Closed circle 118 is fixed on the frame 120, and this 120 can be assemblied on the chassis.So, roller bearing 110 engagement walls, and along with dolly is handled along axle 112 rotations; Roller bearing 110, axle 112 and the assembling parts of platform 114 can be along with the controlling of the latter, with respect to frame 120 rotations and therefore rotate with respect to dolly chassis.Axle 112 is with respect to axle A skew, and platform 114 rotates along axle A, therefore along with dolly is controlled, and the rotating shaft A that platform 114 is followed the trail of platform 114 along the rotating shaft A rotation and the roller bearing 110 of platform 114.

If people expect to limit the rotation of platform 114, such as discussed in the version about the wall racing car of demonstration in Figure 10 and 11 for example, in order to provide special angle to rotate, although can not accurately control, for example it can be realized as the mode as shown among Figure 14 A.As what explained, pin 122 extends through and is retained in the top edge of frame 120, and is installed among the angled recess 114a, and this angled recess is formed at the upper surface of turntable 114; This angled recesses limit the angle that for platform 114, allows along the rotation of axle A.

At last, as mentioned, in the embodiment of wall racing car, this wall racing car can and can be climbed on the wall (just in operation on the floor, the embodiment of Fig. 3-7), people expectation provides a switch that only just starts air exhauster when wall racing car reaches desired angle, under the typical situation this desired angle with respect to the horizontal plane between 30 to 60 degree, thereby downforce can be along with wheel meshes wall surface and stops dolly to begin to climb up wall.Figure 13 shows and to be used for so switch 128 of work, and if wall racing car be placed in and put upside down, when leaning against ceiling, the power that this switch also can less blower fan; Recommended based on this operation of security reason, thus wall racing car can not drop on one's body anyone.Figure 13 A has shown typical circuit, and switch 128 can be used in this circuit.

Switch 128 comprises conductive metal ball 130, and this ball device is in the switch body 132 of hollow.Switch body 132 is about the vertical axis symmetry, and describe in detail the bottom 132a that butt generally is a cone, discoid core 132b and generally butt be the top 132c of cone; Shown in full text, ball 130 rests among the bottom 132a that butt generally is a cone when dolly is on the floor; Ball shown in dotted line falls into discoid core 132b when dolly begins to be vertically oriented, for example when dolly begins to creep wall; If dolly is positioned at the position of putting upside down against ceiling, ball 130 falls into the top 132c that butt generally is a cone.Conductibility contact point 134 is set at the inner surface of bottom 132a and top 132c, thereby this ball connects contact point 134 when ball 130 is placed in top or bottom.

As shown in FIG. 13A, contact point 134 (wherein two shared connections) is connected with battery 28 with normally opened relay 140, and contact point 134 controls comprise the circuit of battery 28 and fan electromotor 39.Therefore, under the situation of switch 128 closures, the complete level of wall racing car just, ball 130 are under situation about connecting between the contact point 134, and relay 140 is closed as shown; When the no longer abundant horizontal ball 130 of wall racing car flowed out bottom 132a inflow top 132b, relay 140 was opened, and closes motor circuit and energizes motor 39, thereby drives blower fan 38.In this embodiment, lean against the position that ceiling stands upside down if wall racing car places, ball 130 falls into top 132c, connects the operation of contact point 134 and prevention fan electromotor 39 similarly.

Though preferred embodiments more of the present invention are at length open herein, the present invention is not limited in the embodiment of the disclosure, and these disclosed embodiment are example.

Claims

1, a kind of battery-driven, the toy car of remote control, this car can move on vertical surface, and this car comprises: the chassis with lower surface;

At least one wheel, described at least one wheel is assembled on the described chassis and with described chassis and cooperates, so that on the real standard surface that described wheel supported, support described chassis, thereby the lower surface on described chassis is maintained at the position from described horizontal surface preset distance

Receiver, this receiver responds the control signal from the teletransmission device,

Battery,

First drive motor, this first drive motor provides electric current by described battery, and responds the signal that described receiver provides,

At least one of described wheel, it can be driven by described first drive motor with controlling;

The second blower fan drive motor, also by battery provide electric current and

By the described second electric motor driven blower fan, described blower fan is assembled in the Fan pipeline, this Fan pipeline runs through described chassis and is designed generally and described horizontal surface quadrature, thereby drives air stream between the described lower surface on described chassis and described horizontal surface

Wherein, the described lower surface on described chassis is by moulding, thereby when placing described dolly when described at least one wheel is contacted with described horizontal surface, described following table limits the Venturi tube of body bottom section together at described horizontal surface, the Venturi tube of described body bottom section extends to described Fan pipeline from the intake section of the periphery that is positioned at described lower surface, produce downforce by described gas stream in the described body bottom section Venturi tube of this pipeline and the differential air pressure between the ambient gas, this downforce impels described chassis towards described horizontal surface.

2, toy car as claimed in claim 1, it is characterized in that: the Venturi tube of the body bottom section of being determined by described lower surface and described horizontal surface in this toy car comprises: intake section, this intake section has the big relatively inlet opening and relative little exit opening of the periphery that is in described body bottom section, thereby described inlet opening is changed by the area of section that moulding surface is connected described intake section smoothly with exit opening; Conversion portion, this conversion portion has unified in fact area of section, and this conversion portion connects the exit opening of described intake section; And exit portion, described exit portion and described Fan pipeline smooth connection are crossed the Venturi tube of described body bottom section by this pipeline gas levelling current stabilization, flow to and flow out described Fan pipeline from the inlet opening of described intake section.

3, toy car as claimed in claim 2, it is characterized in that: be restricted to the radiant type part of the described lower surface on described chassis at the intake section of body bottom section Venturi tube described in this toy car, extend to described exit opening from described inlet opening.

4, toy car as claimed in claim 2 is characterized in that: in the longitudinal cross-section of the exit portion of body bottom section Venturi tube described in this toy car for oval, thereby with described conversion portion smooth connection to described Fan pipeline.

5, toy car as claimed in claim 2, it is characterized in that: Fan pipeline comprises intake section with small cross sectional and the part with comparatively large cross-sectional area in this toy car, connect the described exit portion of described body bottom section Venturi tube at the described Fan pipeline of this intake section, blower fan is arranged on this part with comparatively large cross-sectional area.

6, toy car as claimed in claim 1, it is characterized in that: described at least one wheel comprises pair of driving wheels, each limit that this pair of driving wheels opposes mutually and is arranged on described chassis, and the differential driving of motor that pair of driving wheels is separated, thereby this motor response is driven described dolly from described receiver signal, and the motor of described separation comprises described first drive motor.

7, toy car as claimed in claim 6 is characterized in that: a pair of castor is provided on the described chassis in this toy car, in fact edge and the vertical line arrangement of the line of the described driving wheel that is connected affiliated chassis either side.

8, toy car as claimed in claim 7 is characterized in that: one and described driving wheel are only arranged to contact plane in the described at any time castor thereby be so arranged at castor described in this toy car.

9, the toy car as stating as described in the claim 8 is characterized in that: totally for circular, have the blower fan that is positioned at the circular base plate center on chassis described in this toy car, and the radial in fact symmetry of wherein said body bottom section Venturi tube.

10, toy car as claimed in claim 8, it is characterized in that: totally extend on chassis described in this toy car, has the castor that is positioned at the arbitrary end in chassis, and the body bottom section Venturi tube extends to the Fan pipeline that is positioned at center chassis from arbitrary end, and described toy car comprises that further the pliable and tough skirt section that extends on long limit along the chassis is to provide partially sealed between chassis lower surface and the described horizontal surface.

11, toy car as claimed in claim 7, it is characterized in that: comprise the roller bearing that is assemblied on the axle at castor described in this toy car, the combination of described roller bearing and described axle is supported on and realizes around freely rotating with respect to platform fixing first, otherwise described is supported for around with respect to second of frame fixation freely rotate, described first perpendicular to described second plane but depart from respect to described second, described framework affixes to the chassis of described car, contact with described horizontal surface and described dolly is driven when moving with respect to described horizontal surface when described roller bearing by this mode, described is rotated on described framework, thereby described roller bearing is aligned in described stating on the direction that dolly moves.

12, toy car as claimed in claim 1, it is characterized in that: totally extend on chassis described in this toy car and comprise three pairs of driving wheels, described three pairs of driving wheels are included in the wheel end of arbitrary end on described chassis for the 3rd pair of wheel of center chassis, each comprises a wheel to driving wheel in each side of described chassis, three driving wheels of all of chassis either side are driven together, but three differential drivings of driving wheel of described chassis opposite side, and wherein have only a pair of and middle a pair of of the terminal centering of wheel can while exposure level plane.

13, toy car as claimed in claim 12, it is characterized in that: the wheel end of this toy car is outstanding from the chassis to being set to, thereby the wheel end to can with a surface engaged, this surface perpendicular to the horizontal surface of a pair of and middle wheel to being connected of the terminal centering of wheel.

14, toy car as claimed in claim 13, it is characterized in that: in this toy car each wheel end between the end on described chassis by the moulding radius that is slightly less than described radius of wheel with qualification, and coaxial with described wheel in fact, the end on described chassis forms radiant type and forms the intake section of described body bottom section Venturi tube.

15, toy car as claimed in claim 14 is characterized in that: further comprise the pliability skirt section, extend along the long limit on chassis so that partially sealed between chassis lower surface and this horizontal surface to be provided in this skirt section.

16, toy car as claimed in claim 13 is characterized in that: comprise further and opening also that this switch is operated when horizontal level crawls toward vertical position at described dolly, so that then start described blower fan.

17, toy car as claimed in claim 16, it is characterized in that: comprise a conductive sphere at switch described in this toy car, this conductive sphere is limited in the closed container that is assemblied in described chassis, electronics contact in the operation control circuit of wherein said fan electromotor is positioned at the inwall of described container, thereby when described chassis is positioned at respect to the horizontal plane primary importance, be connected, and when described chassis is positioned at respect to the horizontal plane the second place and described ball electrical isolation with described ball electronics.

18, toy car as claimed in claim 1, it is characterized in that: totally extend on chassis described in this toy car, two castors are positioned at the opposite side of chassis one end, the body bottom section Venturi tube extends to the Fan pipeline that is positioned at center chassis from arbitrary end, and single driving wheel is placed in the chassis longitudinal centre line, be positioned at a side of Fan pipeline, a side of this Fan pipeline is relative with chassis one side at roller place, and wherein said at least one wheel comprises described single driving wheel.

19, toy car as claimed in claim 18 is characterized in that: further comprise the pliability skirt section, extend along the long limit on chassis so that partially sealed between chassis lower surface and this horizontal surface to be provided in this skirt section.

20, toy car as claimed in claim 18, it is characterized in that: each described castor comprises the roller bearing that is assemblied on the axle in this toy car, the combination of described roller bearing and described axle is supported for and realizes around freely rotating with respect to platform fixing first, otherwise described is supported for around with respect to second of frame fixation freely rotate, described first perpendicular to described second plane but depart from respect to described second, described framework affixes to the chassis of described dolly, contact with described horizontal surface and described dolly is driven when moving with respect to described horizontal surface when described roller bearing by this mode, described is rotated on described framework, thereby described roller bearing is aligned on the direction that described dolly moves, described the rotation number of degrees of one of described roller are restricted to the predetermined angle that rotates freely therein, when described dolly was driven on the direction of described roller, dolly was ordered about by the roller bearing of the described roller in the described roller by this mode.

21, toy car as claimed in claim 1, it is characterized in that: two blower fans are provided in this toy car, place Fan pipeline and be communicated with described body bottom section Venturi tube, two blower fans by Motor Drive with the intake section extracting gases stream on the periphery on the chassis that is positioned at described dolly, by described body bottom section Venturi tube, and by described Fan pipeline output.

22, a kind of toy car of battery-driven remote control, this car can move on vertical surface, and this car comprises:

Chassis with lower surface;

Battery,

The second blower fan drive motor, also by battery provide electric current and

Wherein, the described lower surface on described chassis is by moulding, thereby when described at least one wheel contacts with described horizontal surface, described lower surface and described horizontal surface limit the body bottom section Venturi tube that the inlet opening from described lower surface periphery extends together, lower surface defines the radiant type intake section on cross section, conversion portion and oval exit portion, therefore the cross-sectional area of described body bottom section Venturi tube carries out the transition to the conversion portion that area reduces from the inlet opening smoothly, therefore and carry out the transition to the exit portion that communicates with described Fan pipeline thereafter, cause at the gas stream of the described conversion portion of described body bottom section Venturi tube and the differential pressure between the surrounding air at least and impel the downforce of described chassis towards described horizontal surface.

23, toy car as claimed in claim 22, it is characterized in that: on chassis described in this automobile about the radial symmetry of described Fan pipeline, thereby described inlet opening is expanded along circumference on every side on described chassis, the vertical cross-section of the conversion portion of lower surface tilts with respect to described horizontal surface therein, the area and its vertical cross-section that rely on the conversion portion of the described body of this mode bottom Venturi tube to have minimizing are conical, thereby cross-sectional area wherein remains unchanged at wherein radiation amplitude in fact, thereby constant in fact via the speed of wherein gas stream.

24, toy car as claimed in claim 22, it is characterized in that: extend on chassis described in this automobile, this chassis is about the lateral shaft symmetry, Fan pipeline places on this lateral shaft, and described chassis has relative terminal, the inlet opening of the body bottom section Venturi tube of symmetry forms on this terminal, and therein the longitudinal cross-section of the described conversion portion of lower surface show with respect to level parallel, thereby the longitudinal cross-section area of the conversion portion of the body bottom section Venturi tube that so limits remains unchanged.

25, toy car as claimed in claim 24 is characterized in that: further comprise the pliability skirt section, extend along the long limit on described chassis in this skirt section.