CN206257158U - Double-shaft type pivot device - Google Patents

Abstract

A double-shaft pivot device comprises a first rotating shaft, a second rotating shaft, two bearing pieces, a pivot, a first gear, a second gear, a first cam and a second cam. The two bearing pieces are respectively provided with a first shaft hole, a second shaft hole and a third shaft hole positioned between the first shaft hole and the second shaft hole, the first rotating shaft and the second rotating shaft respectively penetrate through the first shaft hole and the second shaft hole of the two bearing pieces in a rotatable mode, and the pivot is pivoted between the third shaft holes of the two bearing pieces. The first gear and the second gear are respectively fixedly sleeved on the first rotating shaft and the pivot and are mutually meshed. The first cam and the second cam are respectively fixedly sleeved on the pivot and the second rotating shaft. When the first sunken part of the first cam is clamped with the second cam, the first rotating shaft is locked; when the second sunken part of the second cam is clamped with the first cam, the second rotating shaft is locked; when the first and second recesses of the first and second cams face each other, the first and second shafts are not locked. The double-shaft pivot device has a simple structure, and the first plate body and the second plate body of the electronic device can relatively rotate by 0 to 360 degrees.

Description

Biaxial hub

technical field

The utility model relates to a biaxial hinge, and in particular to a biaxial hinge installed on an electronic device that can be opened and closed.

Background technique

Existing electronic devices that can be opened and closed, such as notebook computers, tablet computers, mobile phones, etc., connect the first board and the second board of the electronic device through a hinge, so that the first board can be compared with the second board. The two plates rotate to realize the functions of opening and closing. Taking a notebook computer as an example, the first board can be a top cover on which a display screen is installed, and the second board can be a base on which computer components, batteries and a keyboard are installed. In order to allow the first board and the second board of the electronic device to rotate relative to each other from 0 to 360 degrees, the hinge generally needs to use more than two rotating shafts, and the structure is relatively complicated.

Utility model content

The purpose of this utility model is to provide a dual-axis hinge, which has a simple structure and can make the first board and the second board of the electronic device relatively rotate 0 to 360 degrees.

In order to achieve the above purpose, the utility model proposes a double-shaft hinge, which is used to make the first board rotate relative to the second board. The biaxial hub includes a first rotating shaft, a second rotating shaft, two bearing parts, a pivot, a first gear, a second gear, a first cam and a second cam. The first rotating shaft has a first pivot portion and a first fixing portion connected to the first board. The second rotating shaft is parallel to the first rotating shaft and has a second pivot portion and a second fixing portion connected to the second board. The two bearings are arranged parallel to each other and are respectively provided with a first shaft hole, a second shaft hole and a third shaft hole between the first shaft hole and the second shaft hole, wherein the first pivotal part of the first shaft can be The second shaft is rotatably passed through the first shaft hole of the two bearing parts, the second pivot part of the second shaft is rotatably passed through the second shaft hole of the two bearing parts, and the pivot is pivotally connected to the third shaft of the two bearing parts between holes. The first gear is fixedly sleeved on the first pivot portion of the first rotating shaft and is located between the two bearing parts. The second gear is fixedly sleeved on the pivot shaft and engaged with the first gear. The first cam is fixedly sleeved on the pivot and has a first recess. The second cam is fixedly sleeved on the second pivotal portion of the second rotating shaft and is located between the two bearing components, and has a second recessed portion. When the first concave portion of the first cam is engaged with the second cam, the first shaft is in a locked state; when the second concave portion of the second cam is engaged with the first cam, the second shaft is in a locked state; when the second cam is engaged with the first cam, the second shaft is in a locked state; When the first recessed portion of the first cam faces the second recessed portion of the second cam, the first rotating shaft and the second rotating shaft are in an unlocked state.

In one embodiment of the present invention, a first stop portion and a second stop portion are respectively provided on the outer surface of one of the two bearing parts near the first shaft hole and the second shaft hole. The first rotating shaft and the second rotating shaft are respectively provided with a first protrusion and a second protrusion in the radial direction. The first blocking portion is used to stop the first convex portion to limit the rotation angle of the first rotating shaft, and the second blocking portion is used to stop the second convex portion to limit the rotation angle of the second rotating shaft.

In an embodiment of the present invention, the biaxial hinge further includes a first spacer and a second spacer. The first washer is fixedly sleeved on the first pivot portion of the first rotating shaft and adjacent to the first gear. The second gasket is fixedly sleeved on the second pivot portion of the second rotating shaft and adjacent to the second cam.

In an embodiment of the present utility model, the first gear and the first spacer are integrally formed.

In one embodiment of the present utility model, the second cam and the second pad are integrally formed.

In one embodiment of the present utility model, the pivot shaft, the second gear and the first cam are integrally formed.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, and are described in detail with accompanying drawings as follows.

Description of drawings

Fig. 1 is a perspective view of a biaxial hinge according to an embodiment of the present invention.

Fig. 2 is another perspective view of the biaxial hinge according to an embodiment of the present invention.

Fig. 3 is an exploded view of a biaxial hinge according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of the double-axis hinge device when the electronic device is covered according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the dual-axis hinge device when the electronic device is opened 180 degrees according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of the dual-axis hinge device when the electronic device is opened 360 degrees according to an embodiment of the present invention.

Label description

10 first reel

11 First pivot joint

12 First fixed part

13 First protrusion

20 second shaft

21 Second pivot joint

22 Second fixed part

23 Second convex part

30 bearing parts

31 First shaft hole

32 Second shaft hole

33 Third shaft hole

34 First stop

35 Second gear

40 pivots

50 first gear

60 second gear

70 first cam

71 First depression

80 Second cam

81 Second depression

91 First spacer

92 Second spacer.

detailed description

In the following embodiments, the same or similar component symbols represent the same or similar components. In addition, the directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only referring to the directions of the drawings. Therefore, the directional terms used are for explanation rather than Used to limit the utility model.

FIGS. 1 and 2 are perspective views of a biaxial hinge in different viewing angles according to an embodiment of the present invention, and FIG. 3 is an exploded view of the biaxial hinge shown in FIG. 1 . Please refer to Figures 1 to 3 at the same time, the double-axis hinge can be installed on an electronic device (not shown) that can be opened and closed, so that the first board of the electronic device can be relative to the second board The body rotates from 0 to 360 degrees to realize the functions of opening and closing. Electronic devices that can be opened and closed are, for example, notebook computers, tablet computers, mobile phones, and the like. Taking a notebook computer as an example, the first board can be a top cover on which a display screen is installed, and the second board can be a base on which computer components, batteries and a keyboard are installed.

In this embodiment, the biaxial hub includes a first shaft 10, a second shaft 20, two bearings 30, a pivot 40, a first gear 50, a second gear 60, a first cam 70 and a second cam 80 . The first rotating shaft 10 has a first pivot portion 11 and a first fixing portion 12 connected to the first board. The second rotating shaft 20 is parallel to the first rotating shaft 10 and has a second pivot portion 21 and a second fixing portion 22 connected to the second board. The two bearings 30 are arranged parallel to each other and are respectively provided with a first shaft hole 31, a second shaft hole 32 and a third shaft hole 33 between the first shaft hole 31 and the second shaft hole 32, wherein the first rotating shaft 10 The first pivot portion 11 of the second rotating shaft 20 is rotatably passed through the first shaft hole 31 of the two bearing parts 30, and the second pivot part 21 of the second rotating shaft 20 is rotatably passed through the second shaft hole of the two bearing parts 30. 32 , the pivot 40 is pivotally connected between the third shaft holes 33 of the two bearing members 30 .

The first gear 50 is fixedly sleeved on the first pivot portion 11 of the first rotating shaft 10 and located between the two bearing members 30 . The second gear 60 is fixedly sleeved on the pivot shaft 40 and engaged with the first gear 50 . The first cam 70 is fixedly sleeved on the pivot 40 and has a first concave portion 71 . The second cam 80 is fixedly sleeved on the second pivot portion 21 of the second rotating shaft 20 and located between the two bearing elements 30 , and has a second concave portion 81 . When the first concave portion 71 of the first cam 70 is engaged with the second cam 80, the first rotating shaft 10 is in a locked state; when the second concave portion 81 of the second cam 80 is engaged with the first cam 70, the second The rotating shaft 20 is in a locked state; when the first recessed portion 71 of the first cam 70 faces the second recessed portion 81 of the second cam 80, the first rotating shaft 10 and the second rotating shaft 20 are in an unlocked state; therefore, through the first The gear 50 , the second gear 60 , the first cam 70 and the second cam 80 can realize the alternate locking function of the first rotating shaft 10 and the second rotating shaft 20 , which will be described in detail below with reference to FIG. 4 to FIG. 6 .

In this embodiment, a first stop portion 34 and a second stop portion 35 may be respectively provided on the outer surface of one bearing part 30 of the two bearing parts 30 near the first shaft hole 31 and the second shaft hole 32 . The first rotating shaft 10 and the second rotating shaft 20 can respectively have a first protrusion 13 and a second protrusion 23 in the radial direction. The first stop portion 34 is used to stop the first protrusion 13 to limit the rotation angle of the first shaft 10 , and the second stop portion 35 is to stop the second protrusion 23 to limit the rotation angle of the second shaft 20 .

In this embodiment, the biaxial hinge may further include a first washer 91 and a second washer 92 . The first washer 91 is fixedly sleeved on the first pivot portion 11 of the first rotating shaft 10 and adjacent to the first gear 50 . The second washer 92 is fixedly sleeved on the second pivot portion 21 of the second rotating shaft 20 and adjacent to the second cam 80 . In addition, the first gear 50 and the first spacer 91 can be separate components or an integrally formed part; the pivot 40, the second gear 60 and the first cam 70 can be separate components or an integrally formed part; the second cam 80 and second spacer 92 may be separate components, or an integrally formed piece.

4 to 6 are schematic views of the biaxial hinge shown in FIG. 1 when the electronic device is covered, opened 180 degrees, and opened 360 degrees, respectively. For the sake of illustration, some components are omitted in the drawings. In addition, some interlocking relationships will be described first. Since the first gear 50 is fixedly sleeved on the first pivot portion 11 of the first shaft 10, the first gear 50 and the first shaft 10 will rotate together or cannot rotate together; A gear 50 and a second gear 60 mesh with each other, and the first gear 50 and the second gear 60 will rotate together in opposite clock directions, or cannot rotate together; because the second gear 60 and the first cam 70 are fixedly sleeved on the pivot 40, the second gear 60, the first cam 70 and the pivot 40 will rotate together, or cannot rotate together; since the second cam 80 is fixedly sleeved on the second pivot portion 21 of the second rotating shaft 20, the second cam 80 and The second rotating shaft 20 will rotate together, or cannot rotate together.

Please refer to FIG. 4 first. When the first concave portion 71 of the first cam 70 is engaged with the second cam 80, the first cam 70 will not be able to rotate, and the second gear 60, the first gear 50 and the first shaft 10 will be rotated together. It cannot be rotated either, so the first rotating shaft 10 is in a locked state. At this time, the second rotating shaft 20 can be rotated to be in an unlocked state, so the second plate connected to the second rotating shaft 20 can be pulled to start rotating relative to the first plate, so that the electronic device changes from a cover to a flip. open.

Please refer to FIG. 5 again. When the second rotating shaft 20 as shown in FIG. When the electronic device is opened 180 degrees, the second rotating shaft 20 drives the second cam 80 to rotate 180 degrees, so that the second concave portion 81 of the second cam 80 is opposite to the first concave portion 71 of the first cam 70, so the second The first rotating shaft 10 and the second rotating shaft 20 are in an unlocked state. At this time, the position of the second stopper 35 can be designed to stop the second protrusion 23 and limit the rotation angle of the second rotating shaft 20, so that the second rotating shaft 20 cannot continue to rotate beyond 180 degrees even though it is in an unlocked state. . The first rotating shaft 10 is in an unlocked state and can rotate, so the first plate connected to the first rotating shaft 10 can be pulled to start rotating relative to the second plate, so that the electronic device can be opened further by 180 degrees. open.

Please refer to FIG. 6 again. When the first rotating shaft 10 shown in FIG. When opened 180 degrees and further opened, the first gear 50 and the second gear 60 start to rotate together in the opposite clock direction, so that the first cam 70 starts to rotate, causing the second concave portion 81 of the second cam 80 to engage with the When the first cam 70 is closed, the second rotating shaft 20 cannot rotate and is in a locked state. At this time, the position of the first stopper 34 can be designed to stop the first protrusion 13 and limit the rotation angle of the first rotating shaft 10, so that the first rotating shaft 10 can only continue to rotate 180 degrees, so that the first plate will be relatively When the second plate body starts to rotate, the electronic device is unfolded from 180 degrees to 360 degrees.

Although the present utility model has been disclosed as above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art may make some modifications and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the appended claims.

Claims (6)

1. a kind of double-shaft type pivot device, is used to make one first plate body be rotated relative to one second plate body, it is characterised in that the twin shaft Formula pivot device includes：

One first rotating shaft, with one first articulated section and first fixed part being connected with first plate body；

One second rotating shaft, parallel to the first rotating shaft, consolidates with one second articulated section and one are connected with second plate body second Determine portion；

Two bearings part, be disposed in parallel relation to one another and be each provided with one first axis hole, one second axis hole and one be located at first axis hole with Triaxial hole between second axis hole, first articulated section of the first rotating shaft is rotationally arranged in being somebody's turn to do for the two bearings part First axis hole, second articulated section of second rotating shaft is rotationally arranged in second axis hole of the two bearings part；

One pivot, is articulated between the Triaxial hole of the two bearings part；

One first gear, fixed cover is located at first articulated section of the first rotating shaft and between the two bearings part；

One second gear, fixed cover is located at the pivot and is engaged in the first gear；

One first cam, fixed cover is located at the pivot, with one first depressed part；And

One second cam, fixed cover is located at second articulated section of second rotating shaft and between the two bearings part, with one Second depressed part；

Wherein, when first depressed part of first cam is sticked in second cam, the first rotating shaft is in the lock state； When second depressed part of second cam is sticked in first cam, second rotating shaft is in the lock state；When this first When first depressed part of cam is opposite with second depressed part of second cam, the first rotating shaft and second rotating shaft are in Unlocked state.

2. double-shaft type pivot device as claimed in claim 1, wherein,

On the lateral surface of a two bearings part bearing part therein one is respectively equipped with first axis hole and second axis hole First stopper and one second stopper；And

The first rotating shaft and second rotating shaft are respectively at being radially provided with one first convex portion and one second convex portion；

Wherein, first stopper limits the anglec of rotation of the first rotating shaft to backstop first convex portion, and second stopper is used The anglec of rotation of second rotating shaft is limited with backstop second convex portion.

3. double-shaft type pivot device as claimed in claim 1, wherein, the double-shaft type pivot device also includes：

One first pad, fixed cover is located at first articulated section of the first rotating shaft and the adjacent first gear；And

One second pad, fixed cover is located at second articulated section of second rotating shaft and adjacent second cam.

4. double-shaft type pivot device as claimed in claim 3, wherein, the first gear and first pad are formed in one part.

5. double-shaft type pivot device as claimed in claim 3, wherein, second cam and second pad are formed in one part.

6. the double-shaft type pivot device as described in claim 1 or 3, wherein, the pivot, the second gear and first cam are one Body formed part.