# US 9,752,360 B2 · Structure of biaxial synchronization dual-shaft hinge

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- Number: US 9,752,360 B2
- Document ID: US9752360B2
- Status: Granted
- Kind: B2
- Application number: 15/344,561
- Filed: 2016-11-06
- Published: 2017-05-18
- Granted: 2017-09-05
- Earliest claimed: 2015-11-13
- Assignees: Deda Metal Co., Ltd.
- Applicants: Deda Metal Co., Ltd.
- Inventors: Kun-You Chuang
- Web page: https://patentgrep.com/patent/US9752360B2

## CPC

- E05D 3/06: with two or more pins (E05D7/08 takes precedence)
- E05D 5/10: Pins, sockets or sleeves; Removable pins (E05D15/522 takes precedence)
- E05D 11/00: Additional features or accessories of hinges {(edge protecting devices E06B3/88)}
- E05D 11/082: {with substantially radial friction, e.g. cylindrical friction surfaces}
- G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)}
- E05D 2005/102: {Pins}
- E05Y 2999/00: Subject-matter not otherwise provided for in this subclass
- H04M 1/0214: {Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position (combined with translation movement H04M1/0235)}
- H04M 1/022: {The hinge comprising two parallel pivoting axes}
- E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)

## Abstract

A biaxial synchronization dual-shaft hinge includes a pivot shaft set including a first pivot shaft and a second pivot shaft arranged in parallel for the mounting of the top cover member and bottom base member of a dual-leaf mobile electronic device, a transmission device set including an interlocking member having a first pivot hole and a second pivot hole respectively coupled to the first pivot shaft and the second pivot shaft, a first driving member pivotally mounted in the first pivot hole and a second driving member pivotally mounted in the second pivot hole for enabling the first pivot shaft and the second pivot shaft to be synchronously rotated in reversed direction steadily.

## Claims

### Claim 1

A structure of biaxial synchronization dual-shaft hinge, comprising:
a pivot shaft set comprising a first pivot shaft and a second pivot shaft arranged in parallel, said first pivot shaft comprising a first shaft body, said second pivot shaft comprising a second shaft body;
a position-limiting device set mounted on said first shaft body and said second shaft body to control the distance between the axis of said first shaft body and the axis of said second shaft body; and
at least one transmission device set, each said transmission device set comprising an interlocking member, a first driving member and a second driving member, said interlocking member comprising a first pivot hole and a second pivot hole, the distance between the center of said first pivot hole and the center of said second pivot hole being equal to the distance between the axis of said first shaft body of said pivot shaft set and the axis of said second shaft body, said first driving member comprising a first positioning hole, said first driving member being pivotally mounted in said first pivot hole of said interlocking member in such a manner that the center of said first positioning hole is disposed at one side relative to the center of said first pivot hole, said first positioning hole being fastened to said first shaft body of said pivot shaft set, said second driving member comprising a second positioning hole, said second driving member being pivotally mounted in said second pivot hole of said interlocking member in such a manner that the center of said second positioning hole is disposed at one side relative to the center of said second pivot hole, said second positioning hole being fastened to said second shaft body of said pivot shaft set.

### Claim 2 (depends on 1)

The structure of biaxial synchronization dual-shaft hinge as claimed in claim 1, wherein the number of said at least one transmission device set is plural, and the multiple said transmission device sets are arranged in parallel.

### Claim 3 (depends on 1)

The structure of biaxial synchronization dual-shaft hinge as claimed in claim 1, wherein said position-limiting device set comprises at least one position-limiting plate disposed at one side of said at least one transmission device set, each said position-limiting plate comprising a first position-limiting hole and a second position-limiting hole respectively fastened to said first shaft body and said second shaft body of said pivot shaft set.

### Claim 4 (depends on 1)

The structure of biaxial synchronization dual-shaft hinge as claimed in claim 1, wherein said interlocking member further comprises two elastic slots respectively connected to said first pivot hole and said second pivot hole.

### Claim 5 (depends on 1)

The structure of biaxial synchronization dual-shaft hinge as claimed in claim 1, wherein said interlocking member further comprises an elongated elastic slot connected between said first pivot hole and said second pivot hole.

### Claim 6 (depends on 1)

The structure of biaxial synchronization dual-shaft hinge as claimed in claim 1, wherein said pivot shaft set further comprises a first threaded tip axially extended from one end of said first shaft body, a second threaded tip axially extended from one end of said second shaft body, and two torque adjustment members respectively threaded onto said first threaded tip and said second threaded tip for adjusting a torque applied to each shaft.