TWM563730U - Dual-axle hinge device - Google Patents

Abstract

A two-axis pivot device includes two shafts, two carriers, a gear set, and a plurality of torsion plates. Each of the two shafts has a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section. The two bearing seats are respectively formed with two circular holes, and the two circular holes of each bearing seat are respectively sleeved on the two shafts and located on the two mounting sections. The gear set is located between the two carriers. A plurality of torsion sheets are stacked, and each torsion piece passes through two torsion sections. One of the two shafts can rotate to drive the other shaft to rotate by the gear set; and the two shafts can rotate relative to each of the torsion sheets so that the two torsion sections respectively rub against each of the torsion sheets Torque is generated.

Description

Two-axis pivot device

The present invention relates to a torsion structure, and more particularly to a two-axis hub device.

Most of the existing two-axis pivot devices use a disc-shaped elastic piece as their torque adjustment unit. The above-mentioned disc-shaped elastic piece needs to manually adjust the torsion force provided to the two shafts, so that the torsion force of the two shafts is presented. Values are not easily accurately controlled, and the use of disc-shaped shrapnel makes the two shafts prone to problems that are not parallel to each other.

Moreover, since the existing two-axis hinge device needs to manually adjust the compression amount of the disk-shaped elastic piece, the service life thereof is unstable. Moreover, the torque provided by the disc type shrapnel has its limitations, and it is difficult to provide a variable torque value, and thus it is not easy to be applied to devices having different torque requirements.

Therefore, the creator felt that the above defects could be improved. He devoted himself to research and cooperated with the application of scientific principles, and finally proposed a creation that is reasonable in design and effective in improving the above defects.

The present embodiment is directed to providing a dual-axis hub device for effectively improving the possible defects of existing dual-axis hub devices.

The present invention discloses a two-axis pivot device, comprising: two shafts each having a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section; The seats are respectively formed with two circular holes, and the two circular holes of each of the bearing seats are respectively sleeved on two of the shafts and located on two of the mounting sections; a gear set is located at two Between the carriers, there are: two main a moving gear on two of the mounting sections; and two driven gears meshing with each other and respectively engaging the two of the driving gears, and each of the driven gears is pivotally disposed on two of the carrying seats; And a plurality of torsion sheets disposed in a stack, and each of the torsion sheets passes through the two of the torsion segments; wherein one of the two of the shafts is rotatable to be driven by the gear set The other shaft is rotated; and the two shafts are rotatable relative to each of the torsion sheets such that the two torsion sections respectively rub against each of the torsion pieces to generate a torsion.

The present invention further discloses a two-axis pivot device, comprising: two shafts each having a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section; The bearing bases are respectively formed with two circular holes, and the two circular holes of each of the bearing seats are respectively sleeved on the two shafts and located on the two mounting sections; a gear set is located Between two of the carriers; and a plurality of torsion sheets disposed in a stack, and each of the torsion pieces passes through the two torsion segments; wherein one of the two of the shafts is the shaft Being rotatable to drive another of the shafts to rotate by the gear set; and two of the shafts are rotatable relative to each of the torsion plates such that the two torsion segments respectively rub against each of the torsion plates And produces torque.

The present invention further discloses a two-axis pivot device, comprising: a first shaft and a second shaft, each having a torsion section, a fixed section, and between the torsion section and the fixed section a mounting section, and a central axis of the first shaft and a central axis of the second shaft define a reference plane; two carriers, each formed with two circular holes, each of the Two of the circular holes of the carrier are respectively sleeved on the two mounting sections; a gear set is located between the two carriers and includes: a first driving gear, located at the first axis a mounting portion of the rod; a second driving gear on the mounting portion of the second shaft; and a driven gear including a first gear ring and a second gear ring, the a gear ring is engaged with the first driving gear, the second gear ring is meshed with the second driving gear, and the driven gear is pivotally disposed on two of the carrier; wherein the first active The ratio of the number of teeth of the gear divided by the number of teeth of the first gear ring is greater than 1; First a ratio of the number of teeth of the two driving gears divided by the number of teeth of the second gear ring is less than 1; and a plurality of torsion sheets disposed in a stack, and each of the torsion sheets passes through the two torsion segments; wherein The first shaft is rotatable with respect to the reference surface by a first angle, the second shaft is rotatable with respect to the reference surface by a second angle, and the second angle is greater than the first angle; The first shaft and the second shaft are rotatable relative to each of the torsion sheets such that the two torsion segments respectively rub against each of the torsion sheets to generate a torsion.

In summary, the two-axis pivot device disclosed in the present embodiment can match the two shafts, the gear set, and the plurality of torsion plates so that the two shafts can pass through the gear set. When interlocking with each other and causing two of the shafts to rotate relative to each torsion piece, torque can be generated by friction between each other, so that the manner in which the two-axis hinge device generates torque is not limited by the existing disk type shrapnel. .

In order to further understand the features and technical contents of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings, but the drawings are only for reference and description, and are not intended to limit the scope of the present invention.

100, 100'‧‧‧Dual-axis hub

1‧‧‧ shaft

1a‧‧‧First shaft

1b‧‧‧Second shaft

11‧‧‧Torque section

111‧‧‧Torque change section

1111‧‧‧ Non-contact surface

1112‧‧‧Contact surface

112‧‧‧Constant torque section

12‧‧‧ fixed section

13‧‧‧Installation section

2‧‧‧bearing seat

21‧‧‧ round hole

3‧‧‧ Gear Set

31‧‧‧Drive gear

31a‧‧‧First drive gear

31b‧‧‧Second drive gear

32‧‧‧ driven gear

321‧‧‧ pivot shaft

322‧‧‧First gear ring

323‧‧‧Second gear ring

4‧‧‧ bracket

41‧‧‧Fixed holes

5‧‧‧Twisted piece

51‧‧‧ base

52‧‧‧Torque unit

521‧‧‧Outer arm

5211‧‧‧Extension

5212‧‧‧Abutment

5213‧‧‧force arm extension slot

5214‧‧‧ oil tank holes

522‧‧‧Torque adjustment arm

523‧‧‧Axis hole

524‧‧‧ oil tank hole

6‧‧‧ Positioning parts

61‧‧‧ round hole

C, C’‧‧‧ central axis

P‧‧‧ datum

L‧‧‧ axis

Α‧‧‧first angle

Β‧‧‧second angle

O‧‧ Center

R‧‧‧ Radius

D0‧‧‧Interference distance

D1, D2‧‧‧ distance

F1‧‧‧First Torque

F2‧‧‧Second Torque

F3‧‧‧Lifting Torque

Σ1, σ2, σ3‧‧‧ center angle

FIG. 1 is a perspective view of a two-axis pivot device according to a first embodiment of the present invention.

Figure 2 is an exploded perspective view of Figure 1.

Figure 3 is an exploded perspective view of Figure 2.

4 is a partial exploded view of FIG. 1.

Figure 5 is a plan view of the torsion sheet of Figure 4.

Fig. 6 is a schematic view (1) of the operation of the two-axis pivoting device of the first embodiment of the present invention.

Fig. 7 is a schematic view (2) of the operation of the two-axis pivot device of the first embodiment of the present invention.

FIG. 8 is a schematic view (3) of the operation of the biaxial pivot device of the first embodiment of the present invention.

FIG. 9 is a schematic view showing the torsion force of the two-axis pivot device of FIG. 1 when the shaft is rotated.

Figure 10 is a perspective view of the two-axis pivoting device of the second embodiment of the present invention.

Figure 11 is an exploded perspective view of Figure 10.

Figure 12 is an exploded perspective view of Figure 11.

Figure 13 is a cross-sectional view taken along line XIII-XIII of Figure 10.

Figure 14 is a cross-sectional view of Figure 10 taken along the line XIV-XIV.

15 is a schematic view showing the first angle of rotation of the first shaft relative to the reference surface and the second angle of rotation of the second shaft relative to the reference surface according to the second embodiment of the present invention.

Please refer to FIG. 1 to FIG. 15 for the embodiment of the present invention. It should be noted that the related quantity and appearance mentioned in the embodiment are only used to specifically describe the implementation manner of the present invention. To understand the content of this creation, not to limit the scope of this creation.

The present invention provides a two-axis pivot device comprising: two shafts, two carriers, a gear set, and a plurality of torsion plates. Each of the two shafts has a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section. The two said carriers are respectively formed with two circular holes, and the two circular holes of each of the bearing seats are respectively sleeved on the two shafts and located on the two mounting sections. The gear set is located between the two carriers. A plurality of the torsion sheets are stacked, and each of the torsion sheets passes through two torsion sections. Wherein one of the two shafts is rotatable to drive the other shaft to rotate by the gear set; and the two shafts are rotatable relative to each of the torsion plates to enable the two torsion segments Torque is generated by friction with each torsion piece.

The above is the main technical feature of the creative two-axis pivot device. In practical applications, the designer can reasonably use or increase or decrease the above technical features to complete the biaxial pivot device of different implementation modes, so the creation is difficult. All aspects of the two-axis pivot device are described one by one. Therefore, only the partial implementation of the above technical features will be described below to illustrate the two-axis pivot device, but the scope of protection of the present invention is not limited thereto.

[First Embodiment]

1 and 2, a first embodiment of the present disclosure discloses a dual-axis pivot device 100 that can be applied to devices having different torque requirements, such as a notebook computer (not shown) being closed by When the state is turned on, low torque is required, and when the touch screen of the notebook computer and the keyboard are at a certain angle (for example, 85 degrees to 100 degrees), high torque is required.

The two-axis pivot device 100 includes two shafts 1 , two bearing seats 2 sleeved on the two shafts 2 , and a gear set 3 between the two bearing blocks 2 . Located on one side of two of the carrier 2 (such as the left sides of the two carriers 2 in FIG. 1 ) and respectively sleeved two brackets 4 fixed to the two shafts 1 and located on the two carriers The other side of 2 (such as the two sides of the two carriers 2 in Figure 1) and the plurality of torsion sheets 5 passing through the two shafts 1 respectively, and the other side of the two of the carriers 2 (e.g. : The two sides of the two carriers 2 in FIG. 1 ) are sleeved on a positioning member 6 at the ends of the two shafts 1 .

3 and 4, each of the two shafts 1 defines a central axis C, and the central axis C of one of the shafts 1 is preferably parallel to the central axis C of the other of the shafts 1. . Furthermore, the two axles 1 each have a torsion section 11 , a fixed section 12 , and a mounting section 13 between the torsion section 11 and the fixed section 12 . Each of the torsion segments 11 further includes a torsion varying section 111 and a torsion constant section 112. It should be noted that in the embodiment not shown in the present creation, each of the torsion segments 11 may also include only one of the torsion change section 111 and the torsion constant section 112.

Further, the outer surface of each of the torsion changing sections 111 has a non-contact surface 1111 and a contact surface 1112 in an arc shape, and each of the torsion constant sections 112 is substantially cylindrical. Here, the non-contact surface 1111 of the present embodiment is described with a plane cut by the shaft 1 parallel to the central axis C, but the creation is not limited thereto. Furthermore, each of the fixed segments 12 has a substantially non-circular cross section, and each of the mountings The intermediate portion of the segment 13 is integrally formed with a portion of the gear train 3 (one of the two drive gears 31 as described below), but the present creation is not limited thereto.

As shown in FIGS. 1 to 3, the two said carriers 2 are in this embodiment a structure consisting of three stacks of sheets, and the two carriers 2 are arranged at intervals from each other. Two circular holes 21 are formed through the opposite ends of the two bearing bases 2, and the two circular holes 21 of each of the bearing bases 2 are respectively sleeved on the two shafts 1 and are installed in two positions. On segment 13.

The gear set 3 is located between the two carriers 2, that is, the two carriers 2 are respectively located on opposite sides of the gear set 3 and are pivotally connected to the partial gear set 3 to limit the gear set. 3 displacement in the direction of the central axis C. The gear set 3 includes two drive gears 31 and two driven gears 32 in this embodiment. The two driving gears 31 are respectively located at intermediate portions of the two mounting sections 13, and preferably, the two driving gears 31 are integrally formed with the two mounting sections 13, respectively.

Thereby, when the two shafts 1 respectively rotate with the central axis C as the axis, the two driving gears 31 can synchronously rotate, but the creation is not limited thereto. For example, in an embodiment not shown in the present creation, the two driving gears 31 may also be separate members from the two mounting segments 13 respectively, and the two driving gears 31 each have a non- a circular perforation, and each of the two mounting segments 13 has a non-circular mounting portion corresponding to the non-circular perforated shape, and the two non-circular mounting portions can be respectively fixed to two non-circular mounting portions. A circular perforation, and when the two shafts 1 respectively rotate with their central axis C as the axis, the two driving gears 31 can also rotate synchronously.

Further, the two driven gears 32 are located inside the two driving gears 31. The two driven gears 32 are meshed with each other and meshed with the two driving gears 31, respectively. The two driving gears 31 and the two driven gears 32 are interlocked with each other such that one of the two shafts 1 can be centered on the central axis C. The shaft is rotated and the other shaft 1 is rotated by the gear set 3 in the opposite direction, but the creation is not limited thereto. For example, in an embodiment not shown in the present creation, the gear set 3 may also have only two driving gears 31 that mesh with each other, so that the two driving gears 31 can be interlocked with each other by directly meshing with each other. .

In addition, opposite ends of each of the driven gears 32 are respectively pivoted on the two carriers 2 through the pivot shafts 321 , whereby each of the driven gears 32 is corresponding to the driving gear 31 . When interlocked, the driven gear 32 can stably rotate at a fixed position with the pivot shaft 321 as an axis, thereby avoiding the occurrence of the axial offset.

Referring to FIG. 1 to FIG. 3 , the two brackets 4 are all plate-shaped structures, and a fixing hole 41 is formed at one end thereof. The two brackets 4 can be respectively fixed to the fixing sections 12 of the two shafts 1 through the fixing holes 41 thereof, whereby the two brackets 4 can penetrate the gear set 3 and the two shafts 1 And linked to each other. In more detail, when one of the brackets 4 is rotated in the clockwise direction, the other bracket 4 can be linked to rotate in the counterclockwise direction, and vice versa. Further, the other ends of the two brackets 4 can be fixed to the touch screen of a cover type electronic device (for example, a notebook computer) and a host computer including the keyboard (not shown). Therefore, when the touch screen is to be closed or unfolded relative to the main body, the user can push the touch screen so that the touch screen is driven by the bracket 4 to rotate synchronously with respect to the main body, and then gradually close to the main body and cover. Or expand with the host gradually away from each other.

4, a plurality of the torsion sheets 5 are arranged on top of each other, and each of the torsion sheets 5 passes through two torsion sections 11, and the two shafts 1 are rotatable relative to each of the torsion sheets 5, The two torsion segments 11 are respectively rubbed against each of the torsion sheets 5 to generate a torsion. Furthermore, the positioning member 6 is a structure composed of a stack of two sheets and is disposed on the torsion sheet 5 away from the gear set 3 (for example, the rightmost torsion sheet 5 in FIG. 4). Two round holes 61 are formed at opposite ends of the positioning member 6, and two circular holes 61 of the positioning member 6 are sleeved at the ends of the two shafts 1 to make a plurality of the torsion The sheet 5 is limited to the two torsion sections 11 without being disengaged from the two torsion sections 11.

5 to 8, each of the torsion sheets 5 includes a base portion 51 and two torsion units 52 extending from the base portion 51 toward opposite sides. Each of the torsion sheets 5 is symmetrical to its base 51 in this embodiment, that is, the torsion sheet 5 may be mirror symmetry to the base 51, which is not limited herein. In the embodiment not shown in the present creation, the torsion piece 5 may also be a 2-fold symmetry on the base 51, or the torsion piece 5 may be asymmetrical to the base 51. In addition, the above two torsion segments 11 pass through the two torsion units 52 of each of the torsion sheets 5, respectively.

Moreover, since the structures of the plurality of torsion sheets 5 of the present embodiment are the same, and each of the torsion sheets 5 is configured to be symmetrical with respect to the base portion 51, the two torsion sections 11 penetrating the plurality of torsion sheets 5 are mutually The corresponding portions are also of the same or symmetrical configuration. Therefore, in order to facilitate the understanding of the present embodiment, only the base portion 51 of the single torsion sheet 5 and the torque unit 52 on one side thereof and the torque that is worn through the torsion unit 52 are described below. The segment 11 (the torsion segment 11 of FIGS. 6 to 8 is illustrated by presenting the torsion change section 111).

Referring to FIG. 5 , the torsion unit 52 includes an outer arm 521 and a torsion adjustment arm 522 . The opposite ends of the outer arm 521 are connected to the base 51, and may surround the base 51 with a space (not labeled). Further, the outer arm 521 has two extending segments 5211 extending substantially perpendicularly from opposite ends of the base portion 51 and an abutting portion 5212 connecting the two extending segments 5211.

The torsion adjusting arm 522 is located inside the outer arm 521, and the torsion adjusting arm 522 of the present embodiment is connected to the inner edge of the outer arm 521 in an upright position. In other words, the torsion adjusting arm 522 is equivalent to the outer arm 521. The junction of the abutment section 5212 with one of the extensions 5211 extends toward the junction of the abutment section 5212 and the other of the extensions 5211. The arrangement of the torsion adjusting arm 522 divides the space surrounded by the base portion 51 and the outer arm 521 into a shaft hole 523 and communicates with the shaft hole 523. An oil sump hole 524. The shaft hole 523 and the oil groove 524 are respectively located outside and inside the torsion adjusting arm 522, and the shaft hole 523 is substantially surrounded by the abutting portion 5212 of the outer arm 521 and the torsion adjusting arm 522, and the oil groove 524 is formed. It is formed by the two extensions 5221 of the outer arm 521, the torsion adjustment arm 522, and the base 51.

In the torque unit 52 of the present embodiment, the inner edge of the abutting portion 5212 of the outer arm 521 is recessed at a position beside the torque adjusting arm 522 to form a force arm extending slot 5213 that communicates with the shaft hole 523. The inner edge of the abutting portion 5212 of the outer arm 521 is recessed at a position away from the torsion adjusting arm 522 to form a secondary oil hole 5214.

Further, the inner edge of the abutting portion 5212 of the outer arm 521 is substantially arcuate, and the partial inner edge of the torsion adjusting arm 522 is also substantially arcuate. The shaft hole 523 is substantially circular and includes a center O. The distance between the center O and the abutting portion 5212 of the outer arm 521 is defined as a radius R, and the center O is to the inner edge of the torsion adjusting arm 522. The distance is defined as an interference distance D0, and the interference distance D0 is smaller than the radius R described above. Wherein, the interference distance D0 is preferably 90% to 98% of the above radius R, but the creation is not limited thereto.

In addition, the position and configuration of the torque adjustment arm 522 can also be adjusted according to the designer's needs, and is not limited to that shown in FIG. For example, in the embodiment not shown in the present invention, the torque adjusting arm 522 may be disposed such that the space surrounded by the base portion 51 and the outer arm 521 is divided into a shaft hole 523 and communicated with the shaft hole 523. Two oil sump holes 524, and the two oil sump holes 524 are located on opposite sides of the torque adjustment arm 522, and the shaft holes 523 correspond to the free ends of the torque adjustment arms 522.

6 to 8, the torsion section 11 of each of the shafts 1 is a corresponding shaft hole 523 which is bored in each of the torsion sheets 5, and each of the torsion sections 11 abuts against a corresponding torsion unit. 52. The central axis C of each of the shafts 1 in the present embodiment preferably overlaps substantially the center O of the corresponding shaft hole 523 of each of the torsion units 52. For each In the torsion change section 111 of the torsion section 11, the distance D1 of the contact surface 1112 from the central axis C is substantially equal to the radius R, and the distance D2 of the non-contact surface 1111 from the central axis C is smaller than the interference distance. D0 (FIG. 7), such that the contact surface 1112 abuts against the abutting portion 5212 of the corresponding outer arm 521 of each torsion piece 5, and selectively abuts the phase of each of the torsion sheets 5 Corresponding to the torque adjustment arm 522.

In addition, the distance between the outer surface of each of the torsion constant sections 112 and the central axis C (not labeled) is substantially equal to the radius R, so that the outer surface is maintained in contact with each of the torsion sheets 5 The outer arm 521 and the corresponding torque adjustment arm 522.

Further, in each of the torsion changing sections 111 and the corresponding one of the torsion units 52, a partial inner edge of each of the torsion adjusting arms 522 having an arc shape corresponds to a central angle of the center O Defined as σ1, the central angle of the contact surface 1112 corresponding to the central axis C is defined as σ2, the central angle of the non-contact surface 1111 corresponding to the central axis C is defined as σ3, and σ2+σ3=360° , σ1 is smaller than σ2, σ1 is also smaller than σ3, and σ2 is preferably larger than σ3, but the creation is not limited thereto.

Referring to FIG. 6 to FIG. 8 , each of the shafts 1 has a transitional position from a first position (eg, FIG. 6 ) relative to each of the torsion sheets 5 with its central axis C as an axis (eg, : Fig. 7) and rotates to a second position (e.g., Fig. 8) (e.g., counterclockwise rotation in Figs. 6-8). Wherein, the torsion adjusting arm 522 of each torsion piece 5 does not press the torsion changing section 111 of the shaft 1 in the first position (that is, the non-contact surface of the torsion adjusting arm 522 facing the torsion changing section 111) 1111, and the torsion adjusting arm 522 is not significantly deformed), so that the contact surface 1112 of the torsion changing section 111 rubs against the outer arm 521 to generate a first torsion F1. As shown in FIG. 7 , the torsion adjusting arm 522 of each torsion piece 5 partially abuts the contact surface 1112 of the shaft 1 in the transition position, so that the contact surface 1112 of the shaft 1 rubs the outer arm 521 and part of the torque. The arm 522 is adjusted to generate a gentle lifting torque F3. As shown in FIG. 8, the torsion adjusting arm 522 of each torsion piece 5 completely abuts the contact surface 1112 of the shaft 1 in the second position, so that the contact surface 1112 of the shaft 1 rubs the outer arm 521 and the torque. Tune The whole arm 522 generates a second torsion F2. Wherein the second torsion F2 is greater than the first torsion F1, and the value of the retarding torsion F3 includes a range that is ramped up from the first torsion F1 to the second torsion F2 (eg, Figure 9).

In other words, in each of the torsion units 52 corresponding to the shaft 1 and each of the torsion sheets 5 that are disposed, the first position (as shown in FIG. 6) is defined as the non-contact surface 1111. a portion facing the torsion adjusting arm 522, and a portion of the non-contact surface 1111 not facing the torsion adjusting arm 522 corresponding to a central axis C is σ3-σ1; the transition position is that the shaft 1 is The first position is rotated and the rotation angle is between σ3-σ1 and σ3; and the second position (such as FIG. 8) is the position where the shaft 1 is rotated by the first position and the rotation angle is greater than σ3.

[Second embodiment]

As shown in Figures 10 through 15, a second embodiment of the present disclosure discloses a biaxial pivot device 100'. The two-axis pivot device 100' includes a first shaft 1a and a second shaft 1b, and two bearing seats 2 respectively disposed on the first shaft 1a and the second shaft 1b. A gear set 3 between the carriers 2 is located on one side of the two carriers 2 (such as the left sides of the two carriers 2 in FIG. 10) and is respectively sleeved and fixed to the first shaft 1a. Two brackets 4 with the second shaft 1b, on the other side of the two said carriers 2 (such as the two sides of the two carriers 2 in Fig. 10) and each passing through the first shaft 1a and the second a plurality of torsion pieces 5 of the shaft 1b, and the other side of the two of the carriers 2 (such as the right sides of the two carriers 2 in FIG. 10) are sleeved on the ends of the first shaft 1a and the second A positioning member 6 at the end of the shaft 1b.

The structure of most of the above elements and the connection relationship between the elements are substantially the same as those of the first embodiment. The difference between this embodiment and the first embodiment is the structural design of the gear set 3 and the connection relationship between the gear set 3 and other components. Hereinafter, the specific configuration of the gear train 3 of the present embodiment will be described first, and then the connection relationship between the gear train 3 and other components will be described later.

11 and 12, the gear set 3 is located between the two carriers 2, That is, the two said carriers 2 are respectively located on opposite sides of the gear set 3 and are pivotally connected to the partial gear set 3 to limit the displacement of the gear set 3 in the direction of the central axes C, C'.

Referring to FIG. 12 in more detail, the gear set 3 includes a first driving gear 31a, a second driving gear 31b, and a driven gear 32 in this embodiment. The first driving gear 31a is located on the mounting section 13 of the first shaft 1a, the second driving gear 31b is located on the mounting section 13 of the second shaft 1b, and the first driving gear 31a and the second active The gears 31b are arranged offset from each other (as in FIG. 12, the first drive gear 31a is disposed on the left side of the first shaft 1a mounting section 13, and the second drive gear 31b is disposed on the right side of the second shaft 1b mounting section 13 ). Preferably, the first driving gear 31a and the second driving gear 31b are respectively formed integrally with the two mounting segments 13.

Thereby, when the first shaft 1a and the second shaft 1b are rotated about their central axes C, C', respectively, the first driving gear 31a and the second driving gear 31b can rotate synchronously, but This creation is not limited to this. For example, in an embodiment not shown in the present creation, the first driving gear 31a and the second driving gear 31b may also be independent members separated from each other by the two mounting segments 13, respectively, and the first active The gear 31a and the second driving gear 31b each have a non-circular perforation, and the two mounting segments 13 each have a non-circular mounting portion corresponding to the non-circular perforated shape, and the two non-circular portions The shape mounting portion can be respectively fixed to the two non-circular perforations, and when the first shaft 1a and the second shaft 1b respectively rotate with their central axes C, C' as the axis, the first The driving gear 31a and the second driving gear 31b can also rotate in synchronization.

As shown in FIGS. 12 to 14, the driven gear 32 is located inside the first drive gear 31a and the second drive gear 31b. The driven gear 32 includes a first gear ring 322, a second gear ring 323, and a pivot shaft 321 . The first gear ring 322 and the second gear ring 323 are sequentially disposed at an intermediate portion of the pivot shaft 321 , and the first gear ring 322 is engaged with the first driving gear 31 a ( FIG. 13 ). and The second gear ring 323 is meshed with the second drive gear 31b (Fig. 14). By the above-described interlocking relationship between the first driving gear 31a, the second driving gear 31b, and the driven gear 32, one of the shafts of the first shaft 1a and the second shaft 1b can be centered on the central axis thereof ( C or C') is the shaft rotation, and the other shaft is rotated by the gear set 3 in the same direction.

In addition, the opposite ends of the driven gear 32 are respectively pivoted on the two carriers 2 through the pivot shaft 321 , whereby when the driven gear 32 is driven by the first driving gear 31 a or the second driving gear When the 31b is interlocked, the first gear ring 322 and the second gear ring 323 can collectively follow a rotation axis L parallel to any of the central axes (C or C') (eg, the axis of the pivot shaft 321) Synchronous rotation prevents the occurrence of the axis offset, but the creation is not limited to this. For example, in an embodiment not shown in the present writing, when the driven gear 32 is a helical gear design, the first gear ring 322 and the second gear ring 323 may also be perpendicular to each other. A rotation axis L of any of the central axes (C or C') is synchronously rotated.

Further, the ratio of the number of teeth of the first driving gear 31a divided by the number of teeth of the first gear ring 322 is greater than 1 (as shown in FIG. 13), and the number of teeth of the second driving gear 31b is divided by the number of teeth of the second gear ring 323. The ratio is less than 1 (Figure 14). Preferably, in the embodiment of the present invention, the ratio between the number of teeth of the first driving gear 31a and the number of teeth of the first gear ring 322 is 14 to 10 (as shown in FIG. 13), and the second driving gear The ratio between the number of teeth of 31b and the number of teeth of the second gear ring 323 is 10 to 14 (Fig. 14), but the present creation is not limited thereto.

As shown in FIG. 15, the first shaft 1a can be rotated by a first angle α with respect to the reference plane P by the ratio of the number of teeth of each of the driving gears 31a and 31b and the number of teeth of each of the gear rings 322 and 323. The second shaft 1b can be rotated by a second angle β with respect to the reference plane P, and the second angle β is greater than the first angle α. More specifically, in the embodiment of the present invention, since the ratio between the number of teeth of the first driving gear 31a and the number of teeth of the first gear ring 322 is 14 to 10, when the first shaft 1a is opposed When the reference plane P is rotated by the first angle α, the first main The moving gear 31a can synchronously rotate the first angle α, and the first driving gear 31a can enable the first gear ring 322 that is engaged with the first driving gear 31a to rotate a first four times of the first angle α, and The second gear ring 323 can be synchronized with the first angle α of the first gear ring 322 by a factor of four. Moreover, since the ratio between the number of teeth of the second driving gear 31b and the number of teeth of the second gear ring 323 is 10 to 14, when the second gear ring 323 rotates by a factor of four times the first angle α The second gear ring 323 can rotate the second driving gear 31b of the second gear ring 323 by a first two-fold (one-six-six-fold) first angle α, thereby enabling the second shaft 1b to The first angle α (i.e., the second angle β) is rotated approximately twice as fast as the reference plane P.

It should be noted that, in the drawings of the present embodiment, the fixed part (fixed carrier 2) is described in a manner to facilitate understanding of the present creation, but in actual application, the present creation is not limited thereto.

Thereby, when the biaxial pivot device 100 ′ is used in a tripod (or notebook computer) of a tablet computer (not shown), since the rotation center of the biaxial pivot device 100 ′ can be rotated when rotated Lifting, so when the tablet is lifted from the closed state to the unfolded state, interference between the stand and the case can be avoided.

[Technical effect of the present creative embodiment]

According to the above, the biaxial pivot device 100, 100' disclosed in the present embodiment can replace the existing disc type elastic piece by using the cooperation of the torsion piece 5 and the two shafts 1, thereby providing the disc type shrapnel. The variable torque value that cannot be provided is avoided, and the possible loss of the disc type shrapnel is avoided.

The above-described biaxial hinge device 100, 100' can be matched with the shaft 1 by the outer arm 521 of the torsion piece 5 and the torsion adjusting arm 522 to provide different rotation when the shaft 1 is rotated at different positions relative to the torsion piece 5. The torque, which in turn allows the torque value to be precisely controlled, and enables the dual-axis hub device 100, 100' to be applied to different devices. For example: a pen using the biaxial hinge device 100, 100' of the present embodiment When the notebook computer (not shown) is opened by the closed state, the two-axis pivot device 100, 100' can be designed to provide a low torque corresponding to one-hand opening (eg, the first torque F1); When the touch screen of the computer is opened to a certain angle with respect to the keyboard, the two-axis pivot device 100, 100' can be designed to provide high torque (such as the second torque F2) required for the touch.

The above-mentioned two-axis pivot device 100, 100' can be designed by the structure of each of the torsion sheets 5 being symmetric with respect to the base portion 51, so that the torsion forces of the two shafts 1 when rotating are uniform.

The above-mentioned two-axis pivot device 100, 100' can be designed by the structure of each of the shaft holes 523 such that each of the torsion sheets 5 is firmly wrapped around the two shafts 1, and two The central axis C of the shaft 1 is always maintained in a state of being parallel to each other.

The torsion unit 52 can extend the length of the arm of the torsion adjusting arm 522 by the design of the arm extending groove 5213, and can improve the service life of the biaxial hub device 100.

Moreover, since each of the shafts 1 and the corresponding torsion adjusting arms 522 are frictionally provided to provide a torsion force by interference fit, each of the torsion sheets 5 is formed with an oil groove hole 524 capable of providing lubricating oil accommodation. The secondary oil sump hole 5214 is used to provide lubrication between the shaft 1 and the torsion adjusting arm 522 of the torsion sheet 5, thereby enabling the two-axis pivot device 100 to stably provide different torque values.

In addition, the second position of the above-mentioned biaxial pivot device 100, 100' for providing high torque can be determined by the non-contact surface 1111 of the shaft 1 at a central angle σ3, so that the designer can design the shaft 1 by The contact surface 1111 has a central angle σ3 to quickly and accurately accomplish positional requirements between different products requiring high torque.

The two-axis pivot device 100' disclosed in the present embodiment can pass through the structural design of the first driving gear 31a, the second driving gear 31b, and the driven gear 32, and the connection relationship between them. When the two-axis pivot device 100' is rotated, the center of rotation between the first shaft 1a and the second shaft 1b can be raised. With this, When the biaxial hub device 100' is used in a tablet stand (or a notebook computer), interference between the stand and the case can be avoided.

The above description is only the preferred and feasible embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Any changes and modifications made by the scope of the present application should be protected by the present invention.

Claims (10)

A two-axis pivot device includes: two shafts each having a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section; two carrier seats, each formed with Two circular holes, two of which are respectively sleeved on two of the shafts and located on two of the mounting sections; a gear set located on the two of the carriers And a plurality of torsion sheets disposed in a stack, and each of the torsion sheets passes through the two of the torsion segments; wherein one of the two of the shafts is rotatable to pass the The gear set drives the other of the shafts to rotate; and the two shafts are rotatable relative to each of the torsion sheets such that the two torsion sections respectively rub against each of the torsion pieces to generate a torsion. A two-axis pivot device includes: two shafts each having a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section; two carrier seats, each formed with Two circular holes, two of the circular holes of each of the bearing sleeves are respectively sleeved on the two shafts and located on the two mounting sections; a gear set is located on the two bearing seats Between and including: two driving gears on the two mounting sections; and two driven gears meshing with each other and respectively meshing with the two driving gears, and each of the driven gears is pivoted And two torsion sheets are disposed in a stack, and each of the torsion sheets passes through the two torsion segments; Wherein one of the two shafts is rotatable to drive the other of the shafts to rotate by the gear set; and the two shafts are rotatable relative to each of the torsion sheets, The two torsion segments are respectively rubbed against each of the torsion sheets to generate a torsion. The two-axis pivot device of claim 2, wherein each of the torsion sheets comprises a base and two torsion units extending from the base toward opposite sides, each of the torsion units comprising: An outer arm; and a torsion adjusting arm, located inside the outer arm and dividing the space surrounded by the base and the outer arm into a shaft hole and an oil groove hole communicating with the shaft hole; The shaft hole has a center, the distance between the center and the outer arm is defined as a radius, and the distance from the center to the torsion adjusting arm is defined as an interference distance, and the interference distance is smaller than the radius; The two torsion segments are respectively disposed through the two shaft holes of each of the torsion sheets, and each of the torsion segments abuts the corresponding torsion unit. The biaxial hinge device of claim 3, wherein each of the shafts defines a central axis, each of the torsion segments including a torsion varying section, an outer surface of each of the torsion varying sections Having a contact surface and a non-contact surface; in each of the torsion change sections, a distance of the contact surface from the central axis is substantially equal to the radius, and a distance between the non-contact surface and the central axis Less than the interference distance, such that the contact surface abuts against the corresponding outer arm of each of the torsion sheets, and selectively abuts the corresponding torsion adjustment arm of each of the torsion sheets . The two-axis pivot device according to claim 4, wherein in each of the torsion change sections and the corresponding one of the torsion units, each of the torsion adjustment arms corresponds to the central axis The central angle is defined as σ1, the central angle of the contact surface corresponding to the central axis is defined as σ2, and the central angle of the non-contact surface corresponding to the central axis is defined as σ3, σ2+σ3=360°, and σ1 Less than σ2, and Σ1 is also smaller than σ3. The biaxial hinge device of claim 4, wherein each of the torsion segments includes a constant torque section, and an outer surface of each of the torsion constant sections is substantially equal to the central axis by a distance equal to a radius to maintain abutting the corresponding outer arm of each of the torsion sheets and corresponding to the torsion adjustment arm. The biaxial hinge device according to any one of claims 3 to 6, wherein in each of the torsion units, an inner edge of the outer arm is recessed at a position beside the torsion adjustment arm A force arm extending groove communicating with the shaft hole, and an inner edge of the outer arm is recessed to form a secondary oil groove hole away from the torque adjusting arm. The two-axis pivot device according to any one of claims 2 to 6, further comprising two brackets, two of the fixing segments are respectively inserted and fixed to the two brackets, and the two of the driving gears Each of the two mounting sections is integrally formed. A two-axis pivot device includes: a first shaft and a second shaft, each having a torsion section, a fixed section, and a mounting section between the torsion section and the fixed section, and A central axis of the first shaft and a central axis of the second shaft define a reference surface; two bearing seats are respectively formed with two circular holes, two of each of the bearing seats The circular holes are respectively sleeved on the two mounting sections; a gear set is located between the two carriers and includes: a first driving gear, and the mounting section of the first shaft a second driving gear on the mounting section of the second shaft; and a driven gear including a first gear ring and a second gear ring, the first gear ring meshing with the a first driving gear, the second gear ring is meshed with the second driving gear, and the driven gear is pivotally disposed on two of the carrier; wherein the number of teeth of the first driving gear is divided by The ratio of the number of teeth of the first gear ring is greater than 1; the ratio of the number of teeth of the second drive gear divided by the number of teeth of the second gear ring is less than 1; and a plurality of torsion sheets are stacked, and each of the The torsion piece passes through the two torsion segments; wherein the first shaft is rotatable with respect to the reference surface by a first angle, and the second shaft is rotatable with respect to the reference surface by a second angle And the second angle is greater than the first angle; the first shaft and the second shaft are rotatable relative to each of the torsion sheets such that two of the torsion segments are respectively and The torsion piece rubs to generate a torsion. The two-axis pivot device of claim 9, wherein a ratio between a number of teeth of the first driving gear and a number of teeth of the first gear ring is 14 to 10; a number of teeth of the second driving gear The ratio between the number of teeth of the second gear ring is 10 to 14; wherein the first gear ring and the second gear ring rotate together synchronously along a rotation axis parallel or perpendicular to any of the central axes And the second angle is approximately twice the first angle.