Transmission stabilization device applied to dual-shaft system

• US 9,185,815 B2
• Filed: 02/05/2014
• Issued: 11/10/2015
• Est. Priority Date: 12/31/2013
• Status: Active Grant

• Current Assignee: First Dome Corporation
• Original Assignee: First Dome Corporation
• Inventors: Hsu, An Szu
• Primary Examiner(s): O BRIEN, JEFFREY D
• Application Number:
  US14/172,989
• Publication Number:
  US 20150189777A1
• Time in Patent Office: 643 Days
• US Class Current: 1/1
• CPC Class Codes: E05D 3/06 with two or more pins E05D7/08 takes precedence
• CPC Class Codes: E05D 3/12 with two parallel pins and one arm
• CPC Class Codes: E05D 3/122 Gear hinges
• CPC Class Codes: F16H 25/06 with intermediate members guided along tracks on both rotary members
• CPC Class Codes: F16H 57/021 Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• CPC Class Codes: G06F 1/1681 Details related solely to hinges hinge details related to the transmission of signals or power are classified in G06F1/1683
• CPC Class Codes: H04M 1/022 The hinge comprising two parallel pivoting axes
• CPC Class Codes: H05K 5/0226 Hinges
• CPC Class Codes: Y10T 74/1836 Rotary to rotary

Abstract

A transmission stabilization device applied to dual-shaft system for stabilizing and smoothening the transmission and reducing wear of the components. The transmission stabilization device includes a first rotary shaft, a second rotary shaft and a transmission unit, which are assembled with each other. Each of the first and second rotary shafts has a fixed section mounted on an electronic apparatus, a pivoted section assembled with a torque module and a connection section. The transmission unit is drivingly engaged with the connection sections. The transmission unit is mounted on a fixing shaft. When the first or second rotary shaft rotates, the transmission unit is moved along the fixing shaft with the rotation of the first or second rotary shaft. The transmission stabilization device can prevent the transmission unit from swinging so as to overcome the problem of retardation of transmission of the conventional device.

Claims

1. A transmission stabilization device applied to dual-shaft system, comprising:

a first rotary shaft;

a second rotary shaft; and

a transmission unit, the first and second rotary shafts being assembled with the transmission unit, each of the first and second rotary shafts having a fixed section, a pivoted section and a connection section, the transmission unit being disposed on a fixing shaft, whereby when the first rotary shaft or the second rotary shaft rotates, the transmission unit is moved along the fixing shaft with the rotation of the first rotary shaft or the second rotary shaft;

wherein the transmission unit is a block body having two ends, two sides and two walls, the transmission unit being disposed between the connection sections of the first and second rotary shafts for synchronously rotating the first and second rotary shafts, the transmission unit being formed with a shaft hole passing through the transmission unit between the two ends thereof, whereby the transmission unit is mounted on the fixing shaft, the fixing shaft having two ends, a restriction plate and a subsidiary plate being respectively fixedly assembled at the two ends of the fixing shaft, each of the two sides of the transmission unit being formed with a guide section, the connection sections of the first and second rotary shafts being formed with drive sections, the guide sections of the transmission unit being respectively drivingly engaged with the drive sections.

2. The transmission stabilization device applied to dual-shaft system as claimed in claim 1, wherein the fixed section of the first rotary shaft is connected with and disposed on an apparatus body module of an electronic apparatus, while the fixed section of the second rotary shaft is connected with and disposed on a display module of the electronic apparatus, the pivoted sections of the first and second rotary shafts being assembled with a torque module.

3. The transmission stabilization device applied to dual-shaft system as claimed in claim 1, wherein the guide sections of the transmission unit are in the form of bosses and the drive sections of the first and second rotary shafts are in the form of spiral grooves formed on surfaces of the connection sections, the guide sections of the transmission unit being inlaid in the drive sections.

4. The transmission stabilization device applied to dual-shaft system as claimed in claim 1, wherein the connection sections of the first and second rotary shafts, the transmission unit and the fixing shaft are received in a fixing casing, the fixing casing being a casing structure with two open ends, the fixing casing having a substantially 8-shaped cross section, the fixing casing including a first chamber, a second chamber and a belly section in connection with the first and second chambers, the connection sections of the first and second rotary shafts being respectively fixedly assembled in the first and second chambers, the belly section of the fixing casing defining a subsidiary chamber in communication with the first and second chambers for receiving the transmission unit, the belly section being in contact with the two walls of the transmission unit.

5. The transmission stabilization device applied to dual-shaft system as claimed in claim 2, wherein the connection sections of the first and second rotary shafts, the transmission unit and the fixing shaft are received in a fixing casing, the fixing casing being a casing structure with two open ends, the fixing casing having a substantially 8-shaped cross section, the fixing casing including a first chamber, a second chamber and a belly section in connection with the first and second chambers, the connection sections of the first and second rotary shafts being respectively fixedly assembled in the first and second chambers, the belly section of the fixing casing defining a subsidiary chamber in communication with the first and second chambers for receiving the transmission unit, the belly section being in contact with the two walls of the transmission unit.

6. The transmission stabilization device applied to dual-shaft system as claimed in claim 3, wherein the connection sections of the first and second rotary shafts, the transmission unit and the fixing shaft are received in a fixing casing, the fixing casing being a casing structure with two open ends, the fixing casing having a substantially 8-shaped cross section, the fixing casing including a first chamber, a second chamber and a belly section in connection with the first and second chambers, the connection sections of the first and second rotary shafts being respectively fixedly assembled in the first and second chambers, the belly section of the fixing casing defining a subsidiary chamber in communication with the first and second chambers for receiving the transmission unit, the belly section being in contact with the two walls of the transmission unit.

7. The transmission stabilization device applied to dual-shaft system as claimed in claim 4, wherein the restriction plate and the subsidiary plate are respectively positioned at two ends of the fixing casing and mounted in a case together with the fixing casing, each of the restriction plate and the subsidiary plate being formed with two holes for the pivoted sections of the first and second rotary shafts to pass through, the pivoted sections of the first and second rotary shafts passing through the first and second chambers of the fixing casing to assemble with the torque module.

8. The transmission stabilization device applied to dual-shaft system as claimed in claim 6, wherein the restriction plate and the subsidiary plate are respectively positioned at two ends of the fixing casing and mounted in a case together with the fixing casing, each of the restriction plate and the subsidiary plate being formed with two holes for the pivoted sections of the first and second rotary shafts to pass through, the pivoted sections of the first and second rotary shafts passing through the first and second chambers of the fixing casing to assemble with the torque module.

9. The transmission stabilization device applied to dual-shaft system as claimed in claim 7, wherein the torque module includes multiple spring gaskets, fixing plates, rotors and fixing nuts, which are assembled on the first and second rotary shafts, at least one of the fixing plates and the rotors being formed with cooperative recessed/raised locating sections.

10. The transmission stabilization device applied to dual-shaft system as claimed in claim 8, wherein the torque module includes multiple spring gaskets, fixing plates, rotors and fixing nuts, which are assembled on the first and second rotary shafts, at least one of the fixing plates and the rotors being formed with cooperative recessed/raised locating sections.

11. The transmission stabilization device applied to dual-shaft system as claimed in claim 9, wherein the rotors of the torque module are mounted at rear ends of the pivoted sections of the first and second rotary shafts, the rotors being restricted between the fixing plate with the recessed/raised locating sections and the fixing nuts.

12. The transmission stabilization device applied to dual-shaft system as claimed in claim 10, wherein the rotors of the torque module are mounted at rear ends of the pivoted sections of the first and second rotary shafts, the rotors being restricted between the fixing plate with the recessed/raised locating sections and the fixing nuts.