DOUBLE-SHAFT TYPE ROTARY SHAFT PIVOTAL POSITIONING STRUCTURE

• US 20140290008A1
• Filed: 05/16/2013
• Published: 10/02/2014
• Est. Priority Date: 03/27/2013
• Status: Active Grant

• Current Assignee: First Dome Corporation
• Original Assignee: First Dome Corporation
• Inventors: HSU, AN SZU
• Granted Patent: US 8,959,716 B2
• Time in Patent Office: Days
• US Class Current: 16/386
• CPC Class Codes: E05D 11/06 Devices for limiting the opening movement of hinges
• CPC Class Codes: E05D 11/08 Friction devices between relatively-movable hinge parts E05D7/086 takes precedence
• CPC Class Codes: E05D 3/06 with two or more pins E05D7/08 takes precedence
• CPC Class Codes: E05Y 2201/62 Synchronisation of transmission members
• CPC Class Codes: E05Y 2900/606 for electronic devices
• CPC Class Codes: G06F 1/1618 the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure
• CPC Class Codes: G06F 1/162 changing, e.g. reversing, the face orientation of the screen with a two degrees of freedom mechanism, e.g. for folding into tablet PC like position or orienting towards the direction opposite to the user to show to a second user
• 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

Abstract

A double-shaft type rotary shaft pivotal positioning structure includes an elastic guide assembly and two pivot shafts. The elastic guide assembly includes two containing portions which are outwardly communicated and formed with two opposite elastic arms and two corresponding planed press-contact sides. The pivot shafts are respectively centrally provided with center section portions that are utilized to respectively enter the containing portions of the elastic guide assembly and each of which includes a periphery provided with two center section planed surfaces capable of being pressingly contacted with the press-contact sides of the elastic guide assembly. When the pivot shafts are synchronously pivoted close to a preset positioning angle, the center section planed surfaces of the pivot shafts are capable of rotatably attaching toward the press-contact sides of the elastic guide assembly, thereby enabling the pivot shafts to approach and be positioned at the preset positioning angle.

Claims

1. A double-shaft type rotary shaft pivotal positioning structure, at least comprising:

an elastic guide assembly comprising at least one sheet-like elastic guide member, the elastic guide member comprising at least one end portion provided with a hollow containing portion outwardly communicated via a side opening, respectively forming two opposite elastic arms and at least one planed press-contact side on an external circumference and an internal periphery of the containing portion of the elastic guide member; and

a first pivot shaft and a second pivot shaft that are parallel to each other, at least one of which being centrally provided with a center section portion utilized to enter the containing portion of the elastic guide member, the center section portion comprising a periphery provided with at least one center section planed surface to be corresponding to and capable of being contacted with the press-contact side of the elastic guide member, so that, when one of the first and second pivot shafts which is capable of corresponding to the press-contact side of the elastic guide member is pivoted close to a preset angle, each of the two opposite elastic arms is capable of elastically pressing against the center section planed surface of one of the first and second pivot shafts, to thereby produce a driving force to enable the center section planed surface of the pivot shaft to rotatably attach toward the press-contact side of the elastic guide member.

2. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 1, wherein two sides of the press-contact side of the elastic guide member are respectively provided with end convex portions that are capable of being propped against two sides of the corresponding center section planed surfaces of the first and second pivot shafts.

4. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 1, wherein two ends of the elastic guide member are symmetrically provided with the containing portions, two opposite elastic arms and two opposite press-contact sides, and the first and second pivot shafts are correspondingly disposed with the center section portions and the center section planed surfaces.

5. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 2, wherein two ends of the elastic guide member are symmetrically provided with the containing portions, two opposite elastic arms and two opposite press-contact sides, and the first and second pivot shafts are correspondingly disposed with the center section portions and the center section planed surfaces.

7. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 1, wherein the elastic guide assembly comprises a plurality of same sheet-like elastic guide members that are mutually stacked.

8. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 2, wherein the elastic guide assembly comprises a plurality of same sheet-like elastic guide members that are mutually stacked.

10. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 1 further comprising a synchronous linking assembly providing a first socket and a second socket that are capable of performing synchronous reverse rotation and respectively provided with a first joining hole and a second joining hole in the form of a through type, each of the center section portions of the first and second pivot shafts is provided with an end joining portion extended toward one end thereof, and the end joining portions of the first and second pivot shafts are utilized to respectively enter the first and second joining holes of the first and second sockets of the synchronous linking assembly, so that the first and second pivot shafts and the first and second sockets are synchronously linked.

11. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 2 further comprising a synchronous linking assembly providing a first socket and a second socket that are capable of performing synchronous reverse rotation and respectively provided with a first joining hole and a second joining hole in the form of a through type, each of the center section portions of the first and second pivot shafts is provided with an end joining portion extended toward one end thereof, and the end joining portions of the first and second pivot shafts are utilized to respectively enter the first and second joining holes of the first and second sockets of the synchronous linking assembly, so that the first and second pivot shafts and the first and second sockets are synchronously linked.

13. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 7 further comprising a synchronous linking assembly providing a first socket and a second socket that are capable of performing synchronous reverse rotation, the first socket and the second socket are respectively provided with a first joining hole and a second joining hole that are formed of a through type, each of the center section portions of the first and second pivot shafts is provided with an end joining portion extended toward one end thereof, and the end joining portions of the center section portions of the first and second pivot shafts are utilized to respectively enter the first and second joining holes of the first and second sockets of the synchronous linking assembly, so that the first and second pivot shafts and the first and second sockets are synchronously linked.

14. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 10 wherein each of the end joining portions of the first and second pivot shafts comprises a circumference provided with at least one end planed surface, and the first and second joining holes of the first and second sockets of the synchronous linking assembly respectively have a section structure formed with a shape and an area which are equal to that of the end planed surfaces of the first and second pivot shafts, respectively.

15. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 11, wherein each of the end joining portions of the first and second pivot shafts comprises a circumference provided with at least one end planed surface, and the first and second joining holes of the first and second sockets of the synchronous linking assembly respectively have a section structure formed with a shape and an area which are equal to that of the end planed surfaces of the first and second pivot shafts, respectively.

16. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 13, wherein each of the end joining portions of the first and second pivot shafts comprises a circumference provided with at least one end planed surface, and the first and second joining holes of the first and second sockets of the synchronous linking assembly respectively have a section structure formed with a shape and an area which are equal to that of the end planed surfaces of the first and second pivot shafts.

17. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 10, wherein each of the end joining portions of the first and second pivot shafts is provided with a fixation portion that is capable of passing through and outward-protruding from the corresponding first and second joining holes of the first and second sockets of the synchronous linking assembly, and each of the two fixation portions of the first and second pivot shafts is capable of being joined to a fixation member, so that the first and second pivot shafts can be respectively prevented from disengaging from the first and second sockets of the synchronous linking assembly.

18. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 11, wherein each of the end joining portions of the first and second pivot shafts is provided with a fixation portion that is capable of passing through and outward-protruding from the corresponding first and second joining holes of the first and second sockets of the synchronous linking assembly, and each of the two fixation portions of the first and second pivot shafts is capable of being joined to a fixation member, so that the first and second pivot shafts can be respectively prevented from disengaging from the first and second sockets of the synchronous linking assembly.

19. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 14, wherein each of the end joining portions of the first and second pivot shafts is provided with a fixation portion that is capable of passing through and outward-protruding from the corresponding first and second joining holes of the first and second sockets of the synchronous linking assembly, and each of the two fixation portions of the first and second pivot shafts is capable of being joined to a fixation member, so that the first and second pivot shafts can be respectively prevented from disengaging from the first and second sockets of the synchronous linking assembly.

20. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 17, wherein the two fixation portions of the first and second pivot shafts are external screw threads, and the fixation members are screw nuts respectively engaged to the external screw threads.

21. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 19, wherein the two fixation portions of the first and second pivot shafts are external screw threads, and the fixation members are screw nuts respectively engaged to the external screw threads.

22. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 10, wherein one side of the elastic guide assembly to be distant from the synchronous linking assembly is further provided with a spacing-positioning member which is penetratingly formed with a first shaft hole and a second shaft hole that are respectively corresponding to the first and second joining holes of the first and second sockets of the synchronous linking assembly.

23. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 11, wherein one side of the elastic guide assembly to be distant from the synchronous linking assembly is further provided with a spacing-positioning member which is penetratingly formed with a first shaft hole and a second shaft hole that are respectively corresponding to the first and second joining holes of the first and second sockets of the synchronous linking assembly.

24. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 14, wherein one side of the elastic guide assembly to be distant from the synchronous linking assembly is further provided with a spacing-positioning member which is penetratingly formed with a first shaft hole and a second shaft hole that are respectively corresponding to the first and second joining holes of the first and second sockets of the synchronous linking assembly.

25. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 17, wherein one side of the elastic guide assembly to be distant from the synchronous linking assembly is further provided with a spacing-positioning member which is penetratingly formed with a first shaft hole and a second shaft hole that are respectively corresponding to the first and second joining holes of the first and second sockets of the synchronous linking assembly.

26. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 10, wherein one end of each of the first and second pivot shafts to be distant from the end joining portion thereof is provided with a connection portion that is utilized to respectively connect to a pivotal member and a relative pivotal member.

27. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 11, wherein one end of each of the first and second pivot shafts to be distant from the end joining portion thereof is provided with a connection portion that is utilized to respectively connect to a pivotal member and a relative pivotal member.

28. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 14, wherein one end of each of the first and second pivot shafts to be distant from the end joining portion thereof is provided with a connection portion that is utilized to respectively connect to a pivotal member and a relative pivotal member.

29. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 17, wherein one end of each of the first and second pivot shafts to be distant from the end joining portion thereof is provided with a connection portion that is utilized to respectively connect to a pivotal member and a relative pivotal member.

30. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 22, wherein one end of each of the first and second pivot shafts to be distant from the end joining portion thereof is provided with a connection portion that is utilized to respectively connect to a pivotal member and a relative pivotal member.

31. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 10, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

32. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 11, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

33. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 14, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

34. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 17, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

35. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 22, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

36. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 26, wherein the elastic guide assembly and the synchronous linking assembly are disposed in a preset containing space of an outer sleeve tube.

3. The double-shaft type rotary shaft pivotal positioning structure as claimed respectively provided with side convex portions that are capable of being propped against the corresponding center section portions of the first and second pivot shafts.

6. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 3, wherein two ends of the elastic guide member are symmetrically provided with the containing portions, two opposite elastic arms and two opposite press-contact sides, and the first and second pivot shafts are correspondingly disposed with the center section portions and the center section planed surfaces.

9. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 3, wherein the elastic guide assembly comprises a plurality of same sheet-like elastic guide members that are mutually stacked.

12. The double-shaft type rotary shaft pivotal positioning structure as claimed in claim 3 further comprising a synchronous linking assembly providing a first socket and a second socket that are capable of performing synchronous reverse rotation and respectively provided with a first joining hole and a second joining hole in the form of a through type, each of the center section portions of the first and second pivot shafts is provided with an end joining portion extended toward one end thereof, and the end joining portions of the first and second pivot shafts are utilized to respectively enter the first and second joining holes of the first and second sockets of the synchronous linking assembly, so that the first and second pivot shafts and the first and second sockets are synchronously linked.