CN200999833Y

CN200999833Y - Transmission structure

Info

Publication number: CN200999833Y
Application number: CNU2007200473000U
Authority: CN
Inventors: 梁钟铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-15
Filing date: 2007-01-15
Publication date: 2008-01-02
Anticipated expiration: 2017-01-15

Abstract

The utility model discloses a transmission structure, which comprises a transmission axle and a transmission wheel connected on the axle. The utility model is characterized in that the utility model also comprises a front driven part and a rear driven part connected on the transmission axle and located on the front and rear parts of the transmission wheel respectively; circular bulges are respectively arranged on the front and rear end surfaces of the transmission wheel, axial helical tangent planes are respectively arranged on the bulges, the end of the tangent plane forms an axial notch, the rotating directions of the helical tangent planes are identical, and an axial helical tangent plane and a notch meshed with the front and rear end surface tangent planes of the transmission axle are respectively on the rear end surface of the front driven part and the front end surface of the rear driven part; one of the transmission wheel, the front driven part or the rear driven part is fixed on the transmission axle, and the rest are coupled on the transmission axle and can axially slide. The utility model can be widely applies in the manufacture of toys, teaching aids and similar products.

Description

A kind of drive mechanism

Technical field

The utility model relates to Machine Manufacturing Technology, is specifically related to a kind of toy or teaching aid, employing end face of being used for and meshes coaxial transmission, and can realize the drive mechanism of two-way clutch action.

Background technique

In the prior art, existing drive mechanism with clutch function, generally need to adopt special special device or parts such as clutch, its volume is generally all bigger, and complex structure, install, operate complex procedures such as control, the manufacture cost height often can not be directly applied for the manufacturing of the toy that the various requirement volume is less, simple in structure, control is easy, reliable.

The model utility content

The utility model purpose is, at the deficiency of existing drive mechanism, and provides a kind of end face that adopts to mesh coaxial transmission, also can realize the drive mechanism that two-way clutch moves.

For achieving the above object, the technological scheme that the utility model adopted is:

A kind of drive mechanism, it comprises a transmission shaft and is connected drive wheel on this, it is characterized in that, its also comprise be connected on the described transmission shaft, lay respectively at the forward and backward side of described drive wheel one before a driven member and a back driven member; On the front/rear end of described drive wheel, be respectively equipped with an annular protrusion, be respectively equipped with an axial screw tangent plane on this projection, the terminal of this tangent plane forms an axial cut-outs, and the rotation direction of described helical cut face is identical, on the front-end face of the ear end face of driven member and back driven member, be respectively equipped with an axial screw tangent plane and an otch that is meshed with described drive wheel front/rear end tangent plane before described.

Aforesaid transmission shaft, preceding driven member or back driven member one of them, be to be fixed on the described transmission shaft, all the other then are set on this transmission shaft and can endwisely slip.

The angle of the position angle of aforesaid forward and backward otch is 0～180 °.

Aforesaid helical cut face and otch are plane or curved surface.

Aforesaid drive wheel can be members such as driving gear, runner.

Aforesaid drive mechanism also comprises a motor and slowing-down structure, and this slowing-down structure comprises some groups of meshed gears successively, and its final stage output gear is meshed with described driving gear.

Working principle of the present utility model is such: the drive mechanism that the utility model provides, and transmission shaft interfixes with a driven member wherein, then is slidingly matched with another driven member and drive wheel, and driving wheel tube is located on this transmission shaft, and can endwisely slip; Preceding driven member and back driven member then are driven respectively by its end face otch that is meshed or slides with drive wheel or slide; For example, when each end face otch is the dextrorotation setting, when commentaries on classics is looked counterclockwise on a described drive wheel left side, otch on its left side and preceding driven member otch are meshing with each other, preceding driven member is driven coaxial rotation, back driven member is then motionless, otherwise, when commentaries on classics is looked clockwise on a described drive wheel left side, otch on its right side and back driven member otch engagement, back driven member is driven, and preceding driven member is motionless, so, the direction of the rotation by switching driving wheel can realize with the engagement of two driven members automatically and leave, and without additional mechanism.

Advantage of the present utility model is: because it has adopted tangent plane and otch directly are set on drive wheel, can realize clutch function simultaneously to the front and back driven member, and its installation, control operation are conveniently, and simple in structure, volume is little, low cost of manufacture can be widely used in the manufacturing of toy, teaching aid and similar products.

Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.

Description of drawings

Fig. 1 is the utility model embodiment sectional structure schematic representation.

Fig. 2 is the three-dimensional structure for amplifying schematic representation of drive wheel among Fig. 1, and wherein Fig. 2 A is the front-end face schematic representation, and Fig. 2 B is the ear end face schematic representation.

Embodiment

Embodiment: referring to Fig. 1 and Fig. 2, a kind of drive mechanism that the utility model provides, it comprises a transmission shaft 1 and is connected this drive wheel 2 on 1, its also comprise be connected on the described transmission shaft 1, lay respectively at driven member 3 before one before the described drive wheel 2, at the back driven member 4 at these drive wheel 2 rears; On the front/rear end of this drive wheel 2, be respectively equipped with an annular protrusion 21, be respectively equipped with an axial screw tangent plane 22 on this projection 21, the terminal of this tangent plane 22 forms an axial cut-outs 23, and the rotation direction of described helical cut face 22 is identical, on the front-end face of the ear end face of driven member 3 and back driven member 4, be respectively equipped with an axial screw tangent plane and an otch that is meshed with described drive wheel 2 front/rear end tangent planes 22 before described.Aforesaid drive wheel 2, preceding driven member 3 or back driven member 4 one of them, be to be fixed on the described transmission shaft 2, all the other then are set on this transmission shaft 1 and can endwisely slip; Be that preceding driven member 3 adopts spline structure to be fixed on the transmission shaft 2 in the present embodiment, drive wheel 2,4 of the driven members in back are set on this transmission shaft 2.The angle of the position angle of aforesaid forward and backward otch 22 can be any number between 0～180 °, is 180 ° in the present embodiment.Aforesaid helical cut face 22 and otch 23 are a curved surface in the present embodiment, and it also can be the plane.Aforesaid drive wheel 2 is driving gears in the present embodiment, also can be members such as runner among other embodiments.Aforesaid drive mechanism can also comprise a motor 5 and a slowing-down structure, and this slowing-down structure comprises some groups of meshed gears successively 6, and its final stage output gear is meshed with described driving gear 2.

The working principle of present embodiment is such: transmission shaft 1 interfixes with preceding driven member 3, then is slidingly matched with back driven member 4 and drive wheel 2; Drive wheel 2 is sheathed on the transmission shaft 1, and can endwisely slip; Before driven member 3 and 4 of the driven members in the back end face otch that is meshed or slides by itself and drive wheel 2 and be driven respectively or slide; For example, when each end face otch is the dextrorotation setting, when commentaries on classics was looked counterclockwise on described drive wheel 2 left sides, the otch 23 on its left side was meshing with each other with the otch on preceding driven member 3 ear end faces, and preceding driven member 3 is driven coaxial rotation, and 4 of back driven members are motionless; Otherwise, when commentaries on classics is looked clockwise on described drive wheel 2 left sides, otch 23 on its right side is meshed with otch on driven member 4 front-end faces of back, back driven member 4 is driven, and preceding driven member 3 is motionless, so, the direction of the rotation by switching driving wheel 2 can realize with the engagement of two driven members 3,4 automatically and leave, and without additional mechanism.

Adopt the described same or analogous structure of the foregoing description, resulting other drive mechanisms are all within the utility model protection domain.

Claims

1, a kind of drive mechanism, it comprises a transmission shaft and is connected drive wheel on this, it is characterized in that, its also comprise be connected on the described transmission shaft, lay respectively at the forward and backward side of described drive wheel one before a driven member and a back driven member; On the front/rear end of described drive wheel, be respectively equipped with an annular protrusion, be respectively equipped with an axial screw tangent plane on this projection, the terminal of this tangent plane forms an axial cut-outs, and the rotation direction of described helical cut face is identical, on the front-end face of the ear end face of driven member and back driven member, be respectively equipped with an axial screw tangent plane and an otch that is meshed with described drive wheel front/rear end tangent plane before described.

2, drive mechanism according to claim 1 is characterized in that, described drive wheel, preceding driven member or back driven member one of them, be to be fixed on the described transmission shaft, all the other then are set on this transmission shaft and can endwisely slip.

3, drive mechanism according to claim 1 and 2 is characterized in that, the angle of the position angle of described forward and backward otch is 0～180 °.

4, drive mechanism according to claim 1 and 2 is characterized in that, described helical cut face and otch are plane or curved surface.

5, drive mechanism according to claim 1 and 2 is characterized in that, described drive wheel is a driving gear.

6, drive mechanism according to claim 5 is characterized in that, this drive mechanism also comprises a motor and slowing-down structure, and this slowing-down structure comprises some groups of meshed gears successively, and its final stage output gear is meshed with described driving gear.