US 11,692,618 B2
Mechanical device for moving two machine parts toward or away from each other
Kun-Cheng Tseng, Tainan (TW); Hsiang-Wei Chen, Tainan (TW); and Lei Shih Shih, Tainan (TW)
Assigned to Toyo Automation Co., Ltd., Tainan (TW)
Filed by TOYO AUTOMATION CO., LTD., Tainan (TW)
Filed on Mar. 7, 2022, as Appl. No. 17/653,679.
Claims priority of application No. 110138189 (TW), filed on Oct. 14, 2021.
Prior Publication US 2023/0122643 A1, Apr. 20, 2023
Int. Cl. F16H 37/12 (2006.01); F16H 1/22 (2006.01)
CPC F16H 37/124 (2013.01) [F16H 1/222 (2013.01); F16H 1/22 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A mechanical device adapted to move two machine parts toward or away from each other, comprising:
a housing defining an installation space;
a drive unit including a motor positioned in said installation space and a worm connected to and rotated by said motor;
two swing units respectively disposed on two opposite sides of said worm, each of said swing units having a pivot member spaced apart from said worm and rotatably connected to said housing, and a swing member connected to said pivot member to swing around said pivot member, said swing member having a curved toothed portion disposed between said pivot member and said worm and meshing with said worm, and an arcuate cam slot formed between said curved toothed portion and said pivot member, said arcuate cam slot having a first end and a second end opposite to said first end;
a rail unit including at least one rail fixed to said housing above said swing units and said drive unit; and
two sliders respectively connected to said swing units and configured to support the two machine parts, respectively, each of said sliders having a slide block slidably engaging said at least one rail, an extension arm extending downward from said slide block toward said swing member, and a protrusion protruding from said extension arm, said protrusion being inserted into said arcuate cam slot of said swing member, said protrusion being slidable between said first and second ends of said arcuate cam slot of said swing member when said worm drives said swing member to swing;
wherein said protrusion slides from said second end to said first end when said worm rotates in a first direction and from said first end to said second end when said worm rotates in a second direction;
wherein, when said protrusions of said sliders slide to said first ends of said arcuate cam slots, respectively, said slide blocks of said sliders are moved away from each other; and
wherein, when said protrusions of said sliders slide to said second ends of said arcuate guiding recesses, respectively, said slide blocks of said sliders are moved toward each other.