CN2585677Y

CN2585677Y - Back wheel driving gear of toy car

Info

Publication number: CN2585677Y
Application number: CN 02282280
Authority: CN
Inventors: 潘彩云
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-16
Filing date: 2002-10-16
Publication date: 2003-11-12
Anticipated expiration: 2012-10-16

Abstract

The utility model relates to a back wheel driving device of a toy vehicle, which makes improvement on an electric toy vehicle which is currently sold on a market. A chassis 1 is provided with a variable-speed drive mechanism 4 and a vibration dampening mechanism 5, and a differential speed mechanism is arranged between a driving shaft 3 which is provided with driving wheels 2 and a variable-speed drive mechanism 4. Since the differential mechanism is added, the utility model overcomes defects that turning actions of the electric toy vehicle which is currently sold in the market are laborious and are not flexible, and the turning radius is oversized. Simultaneously, since the utility model is added with the variable-speed mechanism, the utility model solves the problems that since the vehicle can totally keep nearly the same speed on any road surface, the condition is not favorable for operating accuracy and increase of efficiency. Since the utility model is also added with the vibration dampening mechanism, when the vehicle runs on the uneven irregular road surface, dithering of the vehicle and friction of each component can be reduced; the service life of the vehicle can be prolonged, and running is smooth and is easy to control.

Description

A kind of rear wheel drive device of toy car

The utility model relates to a kind of rear wheel drive device of rear wheel drive device, particularly a kind of remote-controlled toy vehicle of toy car.

The electric toy car of Chu Shouing in the market, its device does not generally have box of tricks, gear, damper mechanism, and toy car is when turning, because the interior external diameter difference of two wheels, the distance of being walked is also different, and two wheels are to rotate with identical speed, wheel and ground produced friction when toy car was turned, movingly do effort and dumb and make to turn, radius of turn is excessive, also can cause damage to toy car, above-mentioned situation is molded as adverse effect for toy car especially telecar, and it is on a sticky wicket in play.Being same as does not have speed adjusting gear, makes car all keep much at one speed to be unfavorable for the accuracy of operating on any road surface and raises the efficiency.Be same as and be provided with damper mechanism, when car travelled on uneven road surface, the shake of car was just very big, and each parts friction is strengthened, and made to reduce in service life of car and travel not steadily, was difficult to control.

Rotate when the purpose of this utility model provides a kind of turning flexibly, working stability, reliable transmission, and the radius of gyration is less, can not cause the toy car that has box of tricks of damage to toy car.

On this basis, another kind of purpose of the present utility model provides and can adapt to different road traveling rate requests, conveniently adjusted a kind of toy car that has gear.

A nearly step purpose of the present utility model provides a kind of car that makes and travels on more coarse road surface steadily, and flexible operation can not cause the toy car that has damper mechanism of damage to the various parts of toy car.

The utility model comprises car body, the driving shaft of driving wheel, variable transmission mechanism, damper mechanism is installed, and is provided with box of tricks between above-mentioned variable transmission mechanism and the driving wheel; Box of tricks comprises that a pair of center has the big angular wheel of inner hexagonal hole, a pair of angular wheel, the retainer plate that has back shaft, wherein two angular wheel outer ends that have inner hexagonal hole link to each other with driving shaft by interior six holes and two aspectant settings of angular wheel, be provided with a pair of angular wheel that has back shaft that is installed in the retainer plate therebetween, and this two angular wheel is meshed with the angular wheel of hexagonal in the band of both sides simultaneously.

Shown in the output gear of transmission mechanism be small one and large one two hollow housing, be connected together by two silk post relative edges that are arranged on the housing of one side, being provided with that the bottom of two output gears is coaxial is porose, described box of tricks is arranged in the cavity of two defeated also gears, the angular wheel of two band inner hexagonal holes is rotating to link to each other with two output gears, and stretches out from the hole.The driving gear that described variable transmission mechanism comprises each coaxial three-speed gear that has small one and large one two gears of limit, the left and right sides, tooth tank shell that small one and large one two output gears that link together, one can slide by back shaft, be arranged on the dead man on the tooth tank shell and have a long teeth groove is formed.Gear wheel in the middle of the three-speed gear is meshed with driving gear, the shift fork that is stuck in the inner of the driving lever on the tooth casing is stuck in three and connects on the middle canine tooth of tooth, when driving lever is beaten when " L " holds, shift fork drive three company's teeth slide into along central shaft the three little teeth that connect on the tooth just are meshed with the gear wheel of output gear, canine tooth slides along long driving gear teeth groove simultaneously, and output speed can be slack-off like this; When driving lever is dialled when " H " holds, shift fork drives three and connects tooth and slides along central shaft, middle canine tooth along long driving gear teeth groove slide make three canine tooths that connect tooth just with output gear on pinion, make the output speed quickening.

At the bottom of described damper mechanism comprises car, tooth tank shell, a head suspension slidably be set in slide block, the vibration damping catapult on the vibration damping axle and be set in catapult seat on the railway carriage housings support post rotationally in the vibration damping axle at the bottom of the car, by centre bore, described vibration damping catapult is installed between slide block and the catapult seat, on the tooth tank shell is rotatably installed at the bottom of the car by its suspended axle.

The utility model is owing to adopted box of tricks in drive unit, make when turning, the velocity of rotation of two driving wheels can be adjusted automatically according to the size of radius of turn, the flexible movements that toy car is turned, be convenient to operation, because of the rotating speed difference of interior foreign steamer, make its radius of turn less than the toy car that does not have box of tricks, make toy car have better mobility.

Be same as the setting that differential becomes mechanism, eliminated toy car when turning with the friction on ground, wearing and tearing that when having reduced wheel caused and to the damage of toy car because of turning; Owing to being provided with speed change gear at transmission mechanism, the utility model make the travel speed of toy car can carry out the height conversion easily in addition, manipulation is more followed one's bent, the sense of reality and the interest of car load have been increased, in addition because the utility model is provided with damper mechanism, it is more steady to make car load travel, handle more flexibly, lowered the wearing and tearing between each parts, prolonged the service life of toy car.

Below in conjunction with accompanying drawing the utility model is elaborated;

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the general assembly drawing after the installation of the present utility model;

Fig. 3 is the new variable transmission mechanism schematic diagram of this practicality;

Fig. 4 is the utility model box of tricks schematic diagram;

Fig. 5 is the utility model general assembly drawing.

Shown in Fig. 1-5, the utility model comprises at the bottom of the car 1, and driving shaft 3, variable transmission mechanism 4 and the damper mechanism 5 of driving wheel 2 is installed.Damper mechanism 5 comprises vibration damping catapult 51, supports vibration damping catapult 51 catapult seats 52, slide block 53 and vibration damping axle 54.Wherein an end of vibration damping axle 54 is a T-head, the T-shaped head end is suspended at the bottom of the car in 1 the vibration damping axle suspension hanging hole 14, slide block 53 is set on the vibration damping axle 54, vibration damping catapult 51 is set on the slide block 53 and is set on the vibration damping axle 54, and vibration damping axle 54 other ends are anchored on the hanging column 411 of the rotating casing 41 that is sleeved on variable transmission mechanism 4.The other end of casing 41 is provided with the trussed shore 412 that can be set at the bottom of the car in 1 the groove 13, and trussed shore 412 holding rotationally is in groove 13.When car travels road surface in injustice, impulsive force from wheel is delivered to vibration damping catapult 51, impulsive force is slackened play the effect of vibration damping by catapult 51 flexible, described variable transmission mechanism 4 comprises casing 41, make a long driver moving gear 42, three connect tooth gear 43, can connect the back shaft 44 that tooth slides for three, box of tricks 6, power transmission shaft 45, speed change driving lever 46, wherein making a long driver moving gear 42 is fastened on the motor drive shaft of CD-ROM drive motor 47, three-speed gear 43 is installed on the back shaft 44 movably, and be that central shaft rotates with back shaft 44, three connect in the teeth 43 gear wheel 433 with make a long driver that moving gear 42 is meshed and can be along its teeth groove slip, shift fork 461 holdings on the speed change poke rod 46 connect the tooth of middle canine tooth 433 of teeth 43 along both sides three, three connect tooth 43 can rotate in shift fork 461, the hexagonal axis cover fastening with power transmission shaft 45 is set in the interior hexagonal delivery outlet 63 of box of tricks 6, when 46 groups of speed change driving levers when L (low speed), shift fork 461 drives three company's teeth 43 on the driving lever 46 slide into the little tooth 431 that makes on the three-speed gear on back shaft 44 mutually meshing with the big output gear 62 in the box of tricks 6, thereby drive axle 45, it is big to be same as speed reducing ratio, and makes the output speed degree slow; When 46 groups of speed change driving levers during to " H " (at a high speed) shelves, three connect teeth 43 makes the three middle teeth 432 that connect on the teeth 43 be meshed with the little output gear 61 of box of tricks 6 sliding on the back shaft 44, thereby drive power transmission shaft 45,, and output speed is accelerated because speed reducing ratio is little.

Described box of tricks 6 comprises the angular wheel 65 and the cross joint 64 of the angular wheel 63 of hexagonal in big output gear 62, little output gear 61, a pair of band, a pair of band central shaft, wherein the inner hexagonal hole 631 of the angular wheel 63 of two interior hexagonals of band links to each other with the driving shaft 45 of car body both sides respectively, its flank of tooth relatively is provided with, the conical toothization 65 of two band central shafts is installed in rotation in the cross joint 64, and be arranged between the angular wheel 63 of hexagonal in two bands, the tooth on it is meshed with hexagonal pyramidal gear 63 in the band of both sides; Described big output gear 62 and little output gear 61 are hollow housing half, be provided with two silk posts 621 in big output gear 62 housings, relatively be provided with two holes on little output gear 61 housings, so that link to each other with big output gear 62, cross joint 64 is sleeved in the middle of two output gears, like this at cavity that is used to install box of tricks of the inner formation of two output gears, can reduce the shared volume of box of tricks, in the process of moving, when toy car is made straight ahead, because two suffered resistances of wheel are identical, therefore can not relatively rotate, this moment, box of tricks 6 was inoperative, and under output gear 61 (62) drove, two driving shafts 45 rotated synchronously; When toy car is done to turn, because the radius of turn difference of the inside and outside wheel of toy car, its desired rotating speed is also inequality, it is little to be in inboard wheel radius of turn, rotating speed is low, the wheel radius of turn that is in the outside is big, the rotating speed height, the rotating speed difference of two wheels can produce moment of torsion between the wheel, this torsional interaction is on box of tricks 6, the gear of box of tricks 6 inside is rotated, drive two semiaxis 45 and relatively rotate, make the vehicle wheel rotational speed that is positioned at the outside increase, be positioned at inboard vehicle wheel rotational speed and reduce, thereby the rotating speed of two wheels and radius of turn are adapted.Toy car can successfully be turned.

Claims

1. the rear wheel drive device of a toy car, comprise chassis (1), the driving shaft (3) of driving wheel (2) is installed, variable transmission mechanism (4) and damper mechanism (5), it is characterized in that variable transmission mechanism (4) comprises the driving gear (42) that links to each other with motor, the three-speed gear (43) that is used for the conversion speed of a motor vehicle, back shaft (44), the driving lever (46) on holding canine tooth (433) both sides in the middle of three-speed gear (43), box of tricks (6), casing (41), wherein three-speed gear (43) is rotating is installed on its back shaft (44), three gear wheels (433) that connect in the middle of the tooth (43) are meshed with driving gear (42), and can slide and be meshed with it all the time with the teeth groove of stirring along driving gear (42) of holding driving lever (46) thereon, gear broad in the middle (433) the both sides disjunctor of three-speed gear (43) is coaxial respectively is provided with small one and large one two gears, be meshed with the little output gear (61) or the big output gear (62) of box of tricks (6) respectively, driving lever (46) holding is in the draw-in groove (413) of casing (41), wherein box of tricks (6) comprises big output gear (62), little output gear (61), the angular wheel of a pair of tyre inner hexagonal hole (63), angular wheel of a pair of band central shaft (65) and cross joint (64), wherein the inner hexagonal hole (631) of the angular wheel (63) of two interior hexagonals of band outwards and respectively links to each other with the driving shaft (45) of car body both sides, its flank of tooth relatively is provided with, the conical tooth (65) of two band central shafts is installed in rotation in the cross joint (64), and be arranged between the angular wheel (63) of two band inner hexagonal holes, tooth on it is meshed with the angular wheel (63) of hexagonal in the band of both sides, and described damper mechanism (5) comprises chassis (1), casing (41), vibration damping catapult (51), vibration damping axle (54), vibration damping axle bed (52), slide block (53).Wherein slide block (53) is set on the vibration damping axle (54) slidably, vibration damping catapult (51) one ends are sleeved on the slide block (53), the other end and vibration damping axle bed (52) join, vibration damping axle (54) is interspersed in the vibration damping catapult (51), the T-head that vibration damping axle (54) one ends have is suspended in the suppending hole (14) of (1) at the bottom of the car, the other end is installed in the vibration damping axle bed (52), and vibration damping axle bed (52) is installed in rotation on the support column (411) of casing (41).

2. according to the rear wheel drive device of the described toy car of claim 1, the idler gear that it is characterized in that above-mentioned three-speed gear (43) is bigger tooth (433), its both sides are provided with a medium-sized gear (432), a miniature gear (431) coaxially, and three-speed gear (43) is installed in rotation on its back shaft (44).

3. according to the rear wheel drive device of the described toy car of claim 1, it is characterized in that being equipped with on the above-mentioned casing (41) driving lever (46), the inner of driving lever (46) is provided with shift fork (461), and shift fork (461) holding is on the tooth wall both sides of the middle canine tooth (433) of three-speed gear (43).Three connect tooth (43) can freely rotate around its back shaft, and goes up slip with moving of shift fork (46) at back shaft (44).

4. according to the rear wheel drive device of claim 1 or 3 described toy cars, it is characterized in that above-mentioned driving gear (42) for having the driven wheel of long teeth groove, the middle canine tooth (433) of three-speed gear (43) is meshed with it and can slides along its teeth groove.

5. according to the rear wheel drive device of claim 1 or 3 described toy cars, it is characterized in that above-mentioned driving lever (46) is provided with shift fork (461), shift fork (461) holding is on middle canine tooth (433) edge of three-speed gear (43).

6. according to the rear wheel drive device of claim 1 or 3 described toy cars, it is characterized in that above-mentioned casing (41) be provided with can ccontaining driving lever (46) installing hole, driving lever (46) upper end is installed in the installing hole, and certain sliding space is arranged.

7. according to the rear wheel drive device of claim 1 or 3 described toy cars, it is characterized in that above-mentioned three-speed gear (43) can upward slide at its back shaft (44) under the effect of driving lever (46), when driving lever is dialled when (L), the pinion (431) of three-speed gear (43) is meshed with big output gear (62); When driving lever is dialled when (H), three-speed gear (43) medium-sized gear (432) on one side is meshed with little output gear (61).

8. according to the rear wheel drive device of the described toy car of claim 1, the output gear that it is characterized in that above-mentioned transmission mechanism is small one and large one two gear trains that tighten together coaxially, one cavity is arranged in the middle of the gear train, described box of tricks (6) is arranged in its cavity, be provided with porose on two output gears coaxially, two coaxial being arranged in the hole rotationally of angular wheel (63) of inner hexagonal hole in addition in the box of tricks (6), and from the hole, stretch out.

9. according to the rear wheel drive device of the described toy car of claim 1, it is characterized in that above-mentioned power transmission shaft (45) is inserted in by tight cover hexagonal axle sleeve thereon in the hexagon ring of angular wheel (63) of above-mentioned band inner hexagonal hole, rotates thereby drive wheel.

10. according to the rear wheel drive device of the described toy car of claim 1, it is characterized in that above-mentioned chassis 1 rear portion be provided with can ccontaining casing (41) the groove (13) installed of trussed shore (412), trussed shore (412) is placed in the groove (13) rotationally.

11. rear wheel drive device according to the described toy car of claim 1, it is characterized in that two hanging columns (412) that can supply to install damper mechanism (5) that are provided with of the last symmetry of above-mentioned casing (41), the catapult seat (52) of damper mechanism is sleeved on the hanging column (412) rotationally.

12. rear wheel drive device according to the described toy car of claim 1, the vibration damping axle (54) that it is characterized in that above-mentioned damper mechanism (5) is fastened in the catapult seat (52), the T-head of the other end hangs in the suppending hole (14) of chassis (1), vibration damping catapult (51) and slide block (53) are set on the vibration damping axle (54), and slide block (53) can slidably reciprocate on vibration damping axle (54).

13. according to the rear wheel drive device of the described toy car of claim 1, it is characterized in that above-mentioned tooth casing (41) is hollow housing, described variable transmission mechanism (4) installs in the cavity of tooth casing (41).