Dual-shaft synchronous transmission fixing device

Patent metadata

Field	Value
Publication number	US-9309705-B2
Application number	US-201414473083-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Jul 31, 2014
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A dual-shaft synchronous transmission fixing device has a simplified structure and minified volume. The gap between the rotary shafts can be changed or adjusted according to the transmission specification so that the electronic device can be thinned and lightweight. The fixing device includes a driver and a reactor respectively disposed on a first shaft and a second shaft and a link unit engaged with the driver and the reactor, whereby the first and second shafts can be synchronously rotated. The fixing device further includes a main fixing plate and a subsidiary fixing plate having identical structures. The main fixing plate and the subsidiary fixing plate are disposed on the first and second shafts. Each of the main fixing plate and the subsidiary fixing plate has a base section for together pivotally connecting with the link unit.

First claim

What is claimed is:

1. A dual-shaft synchronous transmission fixing device, comprising:
a first shaft having a fixed section and a pivoted section;
a second shaft having a fixed section and a pivoted section;
at least one driver disposed on the pivoted section of the first shaft;
at least one reactor disposed on the pivoted section of the second shaft;
at least one link unit engaged with the driver and the reactor for synchronously rotating the first and second shaft; and
a fixing device including a main fixing plate and a subsidiary fixing plate disposed on the first and second shafts, each of the main fixing plate and the subsidiary fixing plate having a base section, the base sections of the main fixing plate and the subsidiary fixing plate being oppositely assembled with each other, each of the base sections being formed with a recess, the recesses of the base sections together pivotally holding a shaft section of the link unit to pivotally connect the shaft section of the link unit between the base sections of the main fixing plate and the subsidiary fixing plate, permitting the link unit to freely rotate.

2. The dual-shaft synchronous transmission fixing device as claimed in claim 1 , wherein the main fixing plate and the subsidiary fixing plate have identical structures.

3. The dual-shaft synchronous transmission fixing device as claimed in claim 1 , wherein upper and lower sections of the main fixing plate and upper and lower sections of the subsidiary fixing plate are respectively formed with perforations, the pivoted sections of the first and second shafts being passed through the perforations to fit the main fixing plate and the subsidiary fixing plate on the first and second shafts, the driver, the reactor and the link unit being positioned between the main fixing plate and the subsidiary fixing plate, the base sections being normal to the main fixing plate and the subsidiary fixing plate, the recesses of the base sections of the main fixing plate and the subsidiary fixing plate together forming a hollow in which the shaft section of the link unit is pivotally connected, a groove being formed on each of the recesses of the base sections of the main fixing plate and the subsidiary fixing plate, contact sections being formed on the recess on two sides of the groove.

4. The dual-shaft synchronous transmission fixing device as claimed in claim 3 , wherein the recesses of the base sections of the main fixing plate and the subsidiary fixing plate together form a circular hollow, the contact sections of the recess of the main fixing plate and the contact sections of the recess of the subsidiary fixing plate being in contact with the shaft section of the link unit to together pivotally connect with the shaft section of the link unit, the shaft sect ion of the link unit having a diameter equal to a width of the circular hollow.

5. The dual-shaft synchronous transmission fixing device as claimed in claim 1 , wherein each of the base sections of the main fixing plate and the subsidiary fixing plate has a first section and a second section, each of the first sections of the main fixing plate and the subsidiary fixing plate being formed with a protrusion and each of the second sections of the main fixing plate and the subsidiary fixing plate being formed with a dent, the protrusion of the first section of the main fixing plate being assembled with the dent of the second section of the subsidiary fixing plate, while the protrusion of the first section of the subsidiary fixing plate being correspondingly assembled with the dent of the second section of the main fixing plate.

6. The dual-shaft synchronous transmission fixing device as claimed in claim 2 , wherein each of the base sections of the main fixing plate and the subsidiary fixing plate has a first section and a second section, each of the first sections of the main fixing plate and the subsidiary fixing plate being formed with a protrusion and each of the second sections of the main fixing plate and the subsidiary fixing plate being formed with a dent, the protrusion of the first section of the main fixing plate being assembled with the dent of the second section of the subsidiary fixing plate, while the protrusion of the first section of the subsidiary fixing plate being correspondingly assembled with the dent of the second section of the main fixing plate.

7. The dual-shaft synchronous transmission fixing device as claimed in claim 3 , wherein each of the base sections of the main fixing plate and the subsidiary fixing plate has a first section and a second section, each of the first sections of the main fixing plate and the subsidiary fixing plate being formed with a protrusion and each of the second sections of the main fixing plate and the subsidiary fixing plate being formed with a dent, the protrusion of the first section of the main fixing plate being assembled with the dent of the second section of the subsidiary fixing plate, while the protrusion of the first section of the subsidiary fixing plate being correspondingly assembled with the dent of the second section of the main fixing plate.

8. The dual-shaft synchronous transmission fixing device as claimed in claim 5 , wherein the recesses of the base sections of the main fixing plate and the subsidiary fixing plate together form an elliptic hollow in which the shaft sections of two link units are pivotally connected, the two link units being respectively engaged with two drivers and two reactors, the drivers being oppositely mounted on the pivoted section of the first shaft, while the two reactors being oppositely mounted on the pivoted section of the second shaft, the two drivers respectively driving the two link units to rotate to make the two reactors rotate in a direction reverse to a rotational direction of the drivers.

9. The dual-shaft synchronous transmission fixing device as claimed in claim 7 , wherein the recesses of the base sections of the main fixing plate and the subsidiary fixing plate together form an elliptic hollow in which the shaft sections of two link units are pivotally connected, the two link units being respectively engaged with two drivers and two reactors, the drivers being oppositely mounted on the pivoted section of the first shaft, while the two reactors being oppositely mounted on the pivoted section of the second shaft, the two drivers respectively driving the two link units to rotate to make the two reactors rotate in a direction reverse to a rotational direction of the drivers.

10. The dual-shaft synchronous transmission fixing device as claimed in claim 8 , wherein the total of the diameters of the shaft sections of the two link units is equal to the width of the elliptic hollow defined by the recesses of the main fixing plate and the subsidiary fixing plate, the shaft sections of the two link units being in contact with each other.

11. The dual-shaft synchronous transmission fixing device as claimed in claim 1 , wherein each of the driver and the reactor includes a shaft section in parallel to each other and a shaft hole formed on the shaft section, the pivoted sections of the first and second shafts being fixedly fitted in the shaft holes of the driver and the reactor, one end of the shaft section of the driver being provided with a disc, one end of the shaft section of the reactor being also provided with a disc, each of the discs being formed with a crown gear structure, an outer diameter of the disc being larger than an outer diameter of the shaft section, the shaft section of the link unit being normal to the shaft sections of the driver and the reactor, the link unit having spur gear structures or bevel gear structures at two ends of the shaft section corresp

Assignees

• First Dome Corp

Inventors

• Hsu An Szu
• Lee Wang Jui
• Lin Chung Yi
• Lin Ya Ching

Classifications

• E05D3/122 Primary

  Gear hinges · CPC title

• G06F1/1681 Primary

  Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683) · CPC title