TWM500178U - Miniaturized transmission device - Google Patents

Description

Miniaturized transmission

The present invention relates to a model machine, and more particularly to a miniaturized transmission suitable for a model machine.

A transmission device of a model machine (TW Certificate No. M463008 patent) drives a first gear unit by using a driving gear of a motor, and the first gear unit continuously transmits power to a second gear unit. The third gear unit is finally output by a fourth gear unit. The driven gear of the first gear unit and the second gear unit is a spur gear, and the second gear unit and a driving gear of the driven gear, the third gear unit and the fourth gear unit are both The helical gear, although the configuration of the gear unit can achieve the purpose of the reduction drive, the axial direction of the motor and the gear units are parallel to each other, so that the overall volume is large and the miniaturization cannot be achieved.

Furthermore, if the above-mentioned transmission device occurs due to a power supply interruption or the like, the output terminal thereof is subjected to an external force to change its angular position.

And the TW certificate number M345905 patent case also has the above problems.

Therefore, the object of the present invention is to provide a miniaturized transmission that can reduce the overall volume and is convenient to configure.

Therefore, the miniaturized transmission device of the present invention comprises a driving unit, an input gear set, a transmission gear set and an output gear set, the drive unit extending along a first axial direction and having a first axial direction a force input shaft, the input gear set has a worm fixed to the input shaft and a worm gear meshing with the worm and extending along a second axial direction perpendicular to the first axis, the transmission gear set is used for Transmitting the rotational power of the worm wheel and gradually decelerating, the output gear set has a pinion gear that can output the rotational power of the transmission gear set, a power output shaft extending along the second axial direction, and a fixed output shaft a large gear that meshes with the pinion.

The utility model has the advantages that: by using the driving unit to extend along the first axial direction, the overall volume can be effectively reduced, which is beneficial to the overall space design, and the worm of the input gear set and the worm wheel extending along the second axial direction are reused. The cooperation can prevent the output shaft from being subjected to an external force and reversely changing the angle and position.

10‧‧‧Box unit

11‧‧‧中座

12‧‧‧ Lower body

13‧‧‧The upper body

14‧‧‧First space

15‧‧‧Second space

20‧‧‧Drive unit

21‧‧‧Inlet shaft

30‧‧‧Into the gear set

31‧‧‧ worm

32‧‧‧ worm gear

40‧‧‧Transmission gear set

41‧‧‧First small transmission gear

42‧‧‧The first largest transmission gear

43‧‧‧Second small transmission gear

44‧‧‧Second largest transmission gear

50‧‧‧Output gear set

51‧‧‧ pinion

52‧‧‧Output shaft

53‧‧‧Gear gear

60‧‧‧Control unit

I‧‧‧first axial

II‧‧‧Second axial

III‧‧‧third axial

H‧‧‧ Height

W‧‧‧Width

L‧‧‧ length

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is an exploded perspective view showing an embodiment of the novel miniaturized transmission; A three-dimensional combination diagram of an embodiment; FIG. 3 is a schematic perspective view of one of the above embodiments of the present invention; Figure 4 is a cross-sectional view showing a combination of the above-described embodiments of the present invention; and Figure 5 is a cross-sectional view taken along line V-V of Figure 4 .

Referring to FIG. 1 , FIG. 2 and FIG. 3 , a first embodiment of the novel miniaturized transmission device includes a casing unit 10 , a driving unit 20 mounted inside the casing unit 10 , and an input gear set 30 . The transmission gear set 40, an output gear set 50, and a control unit 60.

The casing unit 10 has a middle seat body 11, a lower seat body 12 covering one side of the middle seat body 11, and an upper seat body 13 covering the other side of the middle seat body 11, the middle seat body A first space 14 for mounting the control unit 60 and a drive unit 20, the input gear set 30, the transmission gear set 40, and the output gear set 50 are formed between the lower body 12. The second space 15.

The driving unit 20 of the embodiment can adopt a servo motor and is mounted on the second space 15 and extends along a first axial direction I and has a force input shaft 21 disposed along the first axial direction I.

The input gear set 30 has a worm 31 fixed to the input shaft 21 and a worm gear 32 meshing with the worm 31 and extending along a second axial direction II perpendicular to the first axial direction I.

The transmission gear set 40 is configured to transmit the rotational power of the worm wheel 32 and gradually decelerate, and has a first small transmission gear 41 coaxially fixed to the worm wheel 32, and a first meshing engagement with the first small transmission gear 41. a large transmission gear 42 , a second small transmission gear 43 coaxially fixed to the first large transmission gear 42 , and a second large transmission tooth meshed with the second small transmission gear 43 The wheel 44, the first small transmission gear 41, the first large transmission gear 42, the second small transmission gear 43 and the second large transmission gear 44 are both spur gears.

The output gear set 50 has a pinion 51 that can output the rotational power of the transmission gear set 40, a power output shaft 52 extending along the second axial direction II, and a fixed output shaft 52 and the pinion gear 51. Engaged large gear 53.

As shown in FIG. 3, FIG. 4 and FIG. 5, when the miniaturized transmission is integrally assembled and the driving unit 20 is activated, the input shaft 21 drives the worm 31 of the first gear set 30, and the worm 31 The worm wheel 32 is re-transmitted, and then the first small transmission gear 41 of the transmission gear set 40 coaxially fixed with the worm wheel 32 also drives the first large transmission gear 42. The first large transmission gear 42 is coaxially fixed. The second small transmission gear 43 drives the second large transmission gear 44. Finally, the small gear 51 fixed coaxially with the second large transmission gear 44 drives the large gear 53 again, and the power after multiple speed reduction is The output shaft 52 is output.

In the above transmission process, the transmission of the present invention can produce the following effects:

1. The worm 31 and the worm gear 32 of the input gear set 30 not only effectively save space, but also reduce the number of gears used, and the output gear ratio can also meet the original requirements.

2. The worm 31 and the worm wheel 32 of the input gear set 30 are used, and the angular position of the output shaft 52 is not changed even if the output shaft 52 is subjected to an external force. Therefore, the transmission of the present invention has a reverse thrust prevention. effect.

3. As shown in FIG. 2, a height H corresponding to the second axial direction II of the casing unit 10 is smaller than a width W corresponding to the first axial direction I, and is smaller than the first and second axial directions corresponding to the vertical. A length L of a third axial direction III of I, II.

In summary, the transmission device can achieve the purpose of miniaturization by using the overall configuration, and can ensure that the power output shaft 52 is not subjected to external force when the power supply is stopped, and the purpose of the present invention can be achieved.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

10‧‧‧Box unit

11‧‧‧中座

12‧‧‧ Lower body

13‧‧‧The upper body

14‧‧‧First space

15‧‧‧Second space

20‧‧‧Drive unit

21‧‧‧Inlet shaft

30‧‧‧Into the gear set

31‧‧‧ worm

32‧‧‧ worm gear

40‧‧‧Transmission gear set

41‧‧‧First small transmission gear

42‧‧‧The first largest transmission gear

43‧‧‧Second small transmission gear

44‧‧‧Second largest transmission gear

50‧‧‧Output gear set

51‧‧‧ pinion

52‧‧‧Output shaft

53‧‧‧Gear gear

60‧‧‧Control unit

I‧‧‧first axial

II‧‧‧Second axial

III‧‧‧third axial

Claims (4)

A miniaturized transmission device includes: a driving unit extending along a first axial direction and having an input shaft disposed along the first axial direction; an input force gear set having a worm fixed to the input shaft and a worm gear that meshes with the worm and extends along a second axial direction perpendicular to the first axial direction; a transmission gear set for transmitting the rotational power of the worm wheel and gradually decelerating; and an output gear set having a A pinion gear that can output rotational power of the transmission gear set, a power output shaft extending along the second axial direction, and a large gear fixed to the output shaft and meshing with the pinion gear. The miniaturized transmission device of claim 1, wherein the transmission gear set has a first small transmission gear coaxially fixed to the worm wheel, and a first large transmission gear meshing with the first small transmission gear, a second small transmission gear coaxially fixed with the first large transmission gear and a second large transmission gear meshed with the second small transmission gear, the first small transmission gear, the first large transmission gear, and the second Both the small transmission gear and the second large transmission gear are spur gears. The miniaturized transmission device of claim 1, further comprising a casing unit, the driving unit, the input gear set, the transmission gear set and the output gear set being mounted inside the casing unit. The miniaturized transmission device of claim 3, wherein a height corresponding to the second axial direction of the casing unit is less than a corresponding to the first axial direction The width is less than a length corresponding to a third axial direction perpendicular to the first and second axes.