CN102671391A

CN102671391A - Limited slip differential for remote control model vehicle

Info

Publication number: CN102671391A
Application number: CN2011101149005A
Authority: CN
Inventors: 叶峻岷
Original assignee: CHING CHAN TECHNOLOGY Co Ltd
Current assignee: CHING CHAN TECHNOLOGY Co Ltd
Priority date: 2011-03-15
Filing date: 2011-04-29
Publication date: 2012-09-19
Anticipated expiration: 2031-04-29
Also published as: CN102671391B

Abstract

The invention relates to a limited slip differential for a remote control model vehicle. The limited slip differential comprises a shell, a master gear which is arranged on the side of the shell, two transmission gears which are arranged in the shell, and a differential unit which is arranged in the shell. When the remote control model vehicle turns at a high speed, a bevel gear of the differential unit can be firmly meshed with each transmission gear to reduce the rotation speed of hanging vehicle wheels, and after the remote control model vehicle turns, the bevel gear of the differential unit is not meshed with each transmission gear after being pushed by an elastic part of the differential unit, and thus power can be transmitted to each vehicle wheel normally.

Description

The limited-slip differential of telecontrolled model car

Technical field

The present invention is relevant with the telecontrolled model car, is meant a kind of limited-slip differential of telecontrolled model car especially.

Background technology

TaiWan, China is announced M336068 patent case and is exposed a kind of " differential mechanism that model car is used "; It is to utilize criss-cross axostylus axostyle to drive each locating piece in the locating slot of housing, to slide when model car is curved to cross at a high speed; Cause wearing and tearing to avoid axostylus axostyle direct collision locating slot; Can drive again simultaneously each first helical gear each other near and with each second helical gear engagement, in order to reduce the rotating speed of output shaft, cause the consume of power because of idle running to avoid unsettled wheel.

Yet; When model car cross curved after, each first helical gear must be removed the relation of engagement with each second helical gear, could let each second helical gear reply normal running; But in the aforementioned patent case; Each first helical gear model car cross curved after suffered centrifugal action be not enough to let each first helical gear move to the position that breaks away from fully with each second helical gear, in the case, each second helical gear may be because of still remaining on the state of engagement with several first helical gears wherein in the process that turns round; Cause engine's motive power to have no idea to transfer to each wheel effectively, and then cause the consume of power.

Summary of the invention

Main purpose of the present invention is to provide a kind of limited-slip differential of telecontrolled model car, and it can effectively reduce the consume of power.

In order to reach above-mentioned purpose, limited-slip differential of the present invention includes a housing, a master gear, two output units, and two differential unit.The inside of this housing has a room and four grooves, and said groove is formed and is crosswise by the perisporium of this room depression and distributes; This master gear is located at a side of this housing, can receive the driving of power and drive this housing to rotate; Respectively this output unit has a travelling gear and an output shaft; This two travelling gear relatively is arranged in the room of this housing; Wherein this output shaft is arranged in this master gear and is connected with this travelling gear wherein; Another this output shaft be arranged in this housing relatively this master gear a side and is connected with another this travelling gear, feasible respectively this output unit can with this housing rotation and power is transferred to each wheel; This differential unit is located in the room of this housing and is had a cross axle, Four-slider, four helical gears; And four elastic component; Wherein, this cross axle is located between the travelling gear of this output unit, and respectively this slide block set is located at an end of this cross axle and is located at slippingly in the groove of this housing; Respectively this helical gear be sheathed on slippingly this cross axle and separably with the engagement of the travelling gear of this output unit; In order to reduce the respectively rotating speed of this travelling gear, respectively this elastic component is sheathed on this cross axle and pushes up center and this helical gear to this cross axle respectively with its two ends, in order to strength that answer is provided to this helical gear.

Thus, when the telecontrolled model car was curved to cross at a high speed, the helical gear of this differential unit can be engaged in respectively this travelling gear tightly; In order to reduce the respectively rotating speed of this travelling gear; And then avoid unsettled wheel to produce idle running, in case cross curved after, respectively this helical gear of this differential unit can receive the ejection of corresponding elastic component and remove engagement with this travelling gear respectively; Let respectively this travelling gear can run well, in order to power is transferred to each wheel.

Description of drawings

In order to specify structure of the present invention, characteristic and effect place, below enumerate a preferred embodiment and cooperate the attached drawings explanation as after, wherein:

Fig. 1 is the stereogram of the present invention's first preferred embodiment.

Fig. 2 is the three-dimensional exploded view of the present invention's first preferred embodiment.

Fig. 3 is the longitudinal sectional view of the present invention's first preferred embodiment.

Fig. 4 is the transverse sectional view of the present invention's first preferred embodiment, mainly shows helical gear and the travelling gear state of interlock not as yet.

Fig. 5 is analogous to Fig. 4, mainly shows the state after helical gear and the travelling gear interlock.

Fig. 6 is the transverse sectional view of the present invention's second preferred embodiment, and helical gear and travelling gear be the state of interlock not as yet.

Fig. 7 is analogous to Fig. 6, mainly shows the state after helical gear and the travelling gear interlock.

The specific embodiment

See also Fig. 1 and Fig. 2, the limited-slip differential 10 of the telecontrolled model car that is provided for the present invention's one preferred embodiment includes a housing 20, a master gear 30, two

output units

40,50, and a differential unit 60.

The inside of housing 20 has a room 22 and four grooves 24.Said groove 24 is formed and is crosswise by the perisporium of room 22 depression and distributes; The cross sectional shape of each groove 24 is trapezoidal and has 2 first inclined-planes 242; And the distance at the center of a side to the housing 20 that each groove 24 width is less is greater than the distance at the center of a bigger side to the housing 20 of each groove 24 width; As shown in Figure 4, in addition, an end of each groove 24 is arcuation.

Master gear 30 is located at a side of housing 20, can receive the driving of engine power and drives housing 20 and rotate.

Please cooperate and consult Fig. 2 and Fig. 3,

output unit

40,50 has a

travelling gear

42,52 and an

output shaft

44,54 respectively.Travelling

gear

42,52 relatively is arranged in the room 22 of housing 20, and output shaft 44 is arranged in master gear 30 and is connected with travelling gear 42, and another output shaft 54 is arranged in a side of housing 20 relative master gears 30 and takes turns with another output gear 52 and is connected.Thus,

output unit

40,50 can drive at master gear 30 and rotate synchronously when housing 20 rotates, in order to power is transferred to each wheel.

Differential unit 60 is located in the room 22 of housing 20 and is had a cross axle 61, Four-slider 62, four helical gears 63, and four elastic components 64.Cross axle 61 is located at the travelling gear 42 of

output unit

40,50, between 52 and have two minor axises 65, a rectangular block 66, an and major axis 67, rectangular block 66 wherein is connected between this two minor axis 65 and has a circular hole 662, uses for major axis 67 to wear; Each slide block 62 is sheathed on an end of minor axis 65 and an end of major axis 67; And have the shape that matches with the groove 24 of housing 20 and have 2 second inclined-planes 622; Make each slide block 62 be arranged at slippingly in the groove 24 of housing 20; And support with second inclined-plane 622 and first inclined-plane, 242 mutual subsides of each groove 24, as shown in Figure 4; Each helical gear 63 be sheathed on slippingly each minor axis 65 and major axis 67 and separably with each

travelling gear

42,52 engagement of

output unit

40,50; The two ends of each elastic component 64 are resisted against a side of rectangular block 66 and the end face of helical gear 63 respectively, in order to the strength of answer to be provided.

Can know via said structure; When engine's motive power is passed to master gear 30; Master gear 30 will rotate with housing 20 synchronously, and the engine power of this moment is understood some and is passed to output shaft 44, is passed to output shaft 54 and have an other part; Then be passed to the wheel of telecontrolled model car again via

output shaft

44,54, in order to drive each wheel.

When the telecontrolled model car was curved to cross at a high speed, being positioned at the inboard wheel in track can be unsettled because of centrifugal action, and the cross axle 61 of this moment can produce beat; In the process of cross axle 61 beats; Except meeting drives the slippage in each groove 24 of each slide block 62, with avoid with 24 direct collisions of each groove outside, also can force each helical gear 63 to move towards the center of cross axle 61; Make that each helical gear 63 can extruding elastic components 64 corresponding with it and mesh with each

travelling gear

42,52 of

output unit

40,50; As shown in Figure 5, in order to reduce the rotating speed of each

travelling gear

42,52, so just can avoid unsettled wheel to cause kinetic equation loss because of idle running.

When the telecontrolled model car cross curved after; Each helical gear 63 can receive and the ejection of its corresponding elastic component 64 and removing and each travelling gear 42, the meshing relation between 52; As shown in Figure 4; Let each

output unit

40,50 reply normal running, engine's motive power just can successfully be passed to each wheel via each

output unit

40,50.

Please consult Fig. 6 again; Be the limited-slip differential 70 that the present invention's second preferred embodiment is provided, its primary structure and the foregoing description are roughly the same, precisely because difference is that slide block 72 has two cambered surfaces 722 and supports with inclined-plane 742 mutual subsides of groove 74; As shown in Figure 6; Make that each slide block 72 can be with mode slippage in each groove 74 in more smoothly when the telecontrolled model car is curved to cross at a high speed, as shown in Figure 7, let the limited-slip differential 70 of present embodiment bring into play good differential effect.

Comprehensive the above; Limited-slip differential of the present invention utilizes the design of each slide block; Let the helical gear of differential unit and the travelling gear of output unit cross when bending and positively to mesh at the telecontrolled model car; Utilize the design of each elastic component in addition again, let the travelling gear of helical gear and output unit of differential unit cross and positively to separate after curved, reach the object of the invention with the loss of effective minimizing power at the telecontrolled model car.

The present invention is in the composed component of preceding taking off among the embodiment to be disclosed, is merely to illustrate, and be not to be used for limiting scope of the present invention, substituting or changing of other equivalence element also should be claim scope of the present invention and contains.

Claims

1. the limited-slip differential of a telecontrolled model car includes:

One housing, its inside have a room and four grooves, and said groove is formed and is crosswise by the perisporium of this room depression and distributes;

One master gear is located at a side of this housing;

Two output units; Have two travelling gears and two output shafts; This two travelling gear relatively is arranged in the room of this housing; Wherein this output shaft is arranged in this master gear and is connected with this travelling gear wherein, another this output shaft be arranged in this housing relatively this master gear a side and be connected with another this travelling gear; And

One differential unit; Be located in the room of this housing and have a cross axle, Four-slider, four helical gears; And four elastic component; This cross axle is located between the travelling gear of this output unit; Respectively this slide block set is located at an end of this cross axle and is located at slippingly in the groove of this housing, respectively this helical gear be sheathed on slippingly this cross axle and separably with the engagement of the travelling gear of this output unit, respectively this elastic component is sheathed on this cross axle and pushes up center and this helical gear to this cross axle respectively with its two ends.

2. the limited-slip differential of telecontrolled model car as claimed in claim 1, wherein this cross axle has two minor axises, a rectangular block, and a major axis, and this rectangular block is connected between this two minor axis and has a circular hole, and this major axis is arranged in the circular hole of this rectangular block; Respectively this slide block is located at an end of this minor axis and an end of this major axis, and respectively this helical gear is sheathed on this minor axis and this major axis, and respectively the two ends of this elastic component are resisted against a side and this helical gear end face of this rectangular block respectively.

3. the limited-slip differential of telecontrolled model car as claimed in claim 1; Wherein the cross sectional shape of respectively this groove of this housing is trapezoidal and has 2 first inclined-planes, and respectively the distance at the center of a less side to this housing of this recess width greater than the distance at the center of a side to this housing that respectively this recess width is bigger; Respectively the shape of this slide block match with the shape of this groove respectively and have 2 second inclined-planes and first inclined-plane of this groove respectively paste each other to.

4. the limited-slip differential of telecontrolled model car as claimed in claim 3, wherein an end of the groove of this housing and this slide block all is arcuation.

5. the limited-slip differential of telecontrolled model car as claimed in claim 1; Wherein the cross sectional shape of respectively this groove of this housing is trapezoidal and has two inclined-planes; And respectively the distance at the center of a less side to this housing of this recess width is greater than the distance at the center of a side to this housing that respectively this recess width is bigger, respectively this slide block have two cambered surfaces and the inclined-plane of this groove respectively paste each other to.

6. the limited-slip differential of telecontrolled model car as claimed in claim 5, wherein an end of the groove of this housing and this slide block all is arcuation.