JP3390718B2 - Biaxial hinge device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biaxial hinge device suitable for use between a main body such as a laptop personal computer (personal computer) or a video camera and a liquid crystal display on the screen.

[0002]

2. Description of the Related Art Conventionally, some laptop personal computers and video cameras are provided with a liquid crystal display unit, which is a screen, openable and closable with respect to their main body units. It is known that the main body is provided so as to be rotatable about an axis substantially orthogonal to the main body. In order to enable such an operation, in the laptop personal computer and the video camera, a biaxial hinge device is provided between the main body and the liquid crystal display. In this biaxial hinge device, one end of an interposing member is rotatably provided around a first axis on a main body, and a liquid crystal display unit is provided on the other end of the interposing member at a second position orthogonal to the first axis. It is provided so as to be rotatable around the axis line of.

[0003]

By the way, in the above-mentioned conventional biaxial hinge device, since the hinge mechanism is provided at both ends of the interposing member, the length of the interposing member is reduced. However, there is a problem that the device becomes large. This problem cannot be ignored in a personal computer or a video camera that is supposed to be portable, and development of a smaller biaxial hinge device is desired.

The present invention has been made in view of the above circumstances, and a biaxial hinge device capable of performing a desired opening / closing operation and a rotating operation of a screen with respect to a main body, a simple structure, and a size reduction. The purpose is to provide.

[0005]

According to a first aspect of the invention, the second member is provided so that the second member can freely rotate about the first axis or about the second axis. The second axis rotates together with the second member around the first axis, and is freely rotatable around the second axis at a predetermined rotation angle around the first axis. What is claimed is: 1.A biaxial hinge device comprising an engagement mechanism which is rotatable about the first axis at a predetermined rotation angle about the second axis, wherein the first support shaft is provided on the first member. A second support shaft is provided on the second member, and the first support shaft and the second support shaft are rotatably provided by being inserted into a support frame. The engagement mechanism is formed on the outer periphery of the first support shaft and is the tip of the second support shaft. A recess provided so that the second support shaft can be housed in such a manner as to be rotatable, a protrusion formed at the tip of the second support shaft, and an outer periphery of the first support shaft connected to the recess. An outer peripheral groove formed to accommodate the convex portion, the second support shaft being constrained from rotating about the second axis and being rotatable about the first axis. It is characterized by

With this structure, the second member, together with the second support shaft provided on the second member and the support frame body through which the second support shaft is inserted, It rotates around the axis line (first axis line) of the first support shaft inserted in the. Further, the second member rotates around the axis (second axis) of the second support shaft that is inserted into the support frame. In this way, the second member rotates about the first axis or the second axis with respect to the first member provided with the first support shaft.

The rotations about these two axes are not independent of each other due to the engagement mechanism provided between the first support shaft and the second support shaft. That is, when the second member and the second support shaft rotate together about the first axis, the protrusion provided at the tip of the second support shaft restrains the rotation about the second axis. So as to engage with the outer peripheral groove of the first support shaft. The convex portion is guided to the concave portion provided on the outer periphery of the first support shaft along the outer peripheral groove along with the rotation of the second support shaft around the first axis. In this way, the second member and the second support shaft rotate about the first axis by a predetermined rotation angle, and the tip of the second support shaft is provided on the outer periphery of the first support shaft. When reaching the concave portion, the engagement state between the convex portion and the outer peripheral groove is released, and the second member and the second support shaft become rotatable about the second axis. next,
When the second member and the second support shaft rotate about the second axis, the convex portion of the tip of the second support shaft becomes unable to engage with the outer peripheral groove by the rotation about the first axis, Rotation around the axis of is constrained. When the second member and the second support shaft return to their original state again, that is, when the convex portion of the tip of the second support shaft is in a state where it can be engaged with the outer peripheral groove by rotation around the first axis. The second member and the second support shaft are rotatable about the first axis.

As described above, the second member is freely rotatable about the second axis with respect to the first member at a predetermined rotation angle about the first axis, and the second member is rotated about the second axis. Is freely rotatable about the first axis.

[0009]

[0010]

[0011]

According to a second aspect of the present invention, the second member is provided so as to freely rotate about the first axis or rotate about the second axis with respect to the first member. An axis rotates with the second member about the first axis,
Engagement that allows rotation about the second axis at a predetermined rotation angle about the first axis and rotation about the first axis at a predetermined rotation angle about the second axis. A biaxial hinge device comprising a mechanism, wherein the first member is provided with a first support shaft, the second member is provided with a second support shaft, and the first support shaft is provided. And the second support shaft are rotatably provided by being inserted into the inside of a support frame, and the engagement mechanism includes a restraint groove formed at a tip of the first support shaft and the second support shaft. Guide ridge formed on the outer periphery of the support shaft and engaging with the restraint groove at the tip of the first support shaft, and a part of the guide ridge, and the engagement with the restraint groove is released. A notch provided so that the second support shaft is rotatable about the first axis. Characterized in that it comprises.

With this structure, the second member, together with the second support shaft provided on the second member and the support frame body through which the second support shaft is inserted, It rotates around the axis line (first axis line) of the first support shaft inserted in the. Further, the second member rotates around the axis (second axis) of the second support shaft that is inserted into the support frame. In this way, the second member rotates about the first axis or the second axis with respect to the first member provided with the first support shaft.

Rotations about these two axes are not independent of each other due to the engagement mechanism provided between the first support shaft and the second support shaft. That is, when the notch portion of the guide ridge provided on the outer periphery of the second support shaft is located at the tip of the first support shaft and the engagement between the guide ridge and the restraint groove is released, Rotation of the second member and the second support shaft about the first axis is possible. On the other hand, the rotation around the second axis is restricted because the tip of the first support shaft prevents the guide ridge from traveling. However, the second member and the second support shaft rotate about the first axis by a predetermined rotation angle,
When the guide ridge can be engaged with the restraint groove provided at the tip of the first support shaft without being blocked by the tip of the first support shaft, the second member and the second support shaft move around the second axis. It becomes rotatable. Further, when the second member and the second support shaft rotate about the second axis, the guide ridge on the outer periphery of the second support shaft enters the restraint groove provided at the tip of the first support shaft. . The guide ridge is engaged with the restraint groove to restrain the rotation of the second member and the second support shaft about the first axis. When the second member and the second support shaft are in the state of starting the original rotation again, that is, the notch of the guide ridge on the outer periphery of the second support shaft is located at the tip of the first support shaft. At this time, the second member and the second support shaft are rotatable about the first axis.

As described above, the second member is freely rotatable about the second axis with respect to the first member at a predetermined rotation angle about the first axis, and the second member is rotatable about the second axis. Is freely rotatable about the first axis.

The invention according to claim 3 is the invention according to claim 1 or 2.
The biaxial hinge device as described above, characterized in that a first elastic member is provided between the first support shaft and the support frame.

With this structure, the first elastic member applies a predetermined urging force between the first support shaft and the support frame while resisting the urging force. By the rotation of the support frame with respect to the support shaft, the posture of the support frame is maintained unless a force exceeding the biasing force of the first elastic member is applied to the support frame.

The invention described in claim 4 is the invention according to claims 1 to 3.
The biaxial hinge device according to any one of claims 1 to 5, wherein a second elastic member is provided between the second support shaft and the support frame.

With this structure, the second elastic member applies a predetermined biasing force between the support frame and the second support shaft, and resists this biasing force while supporting the support frame. As a result of the rotation of the second support shaft with respect to the second support shaft, the postures of the second member and the second support shaft are maintained unless a force exceeding the biasing force of the second elastic member is applied to the second support shaft. To be done.

The invention as defined in claim 5 is based on claims 1 to 4.
The biaxial hinge device according to any one of claims 1 to 4, wherein a first rotation range regulation is provided between the first support shaft and the support frame to regulate a rotation range of the second member around the first axis. It is characterized in that a mechanism is provided.

With such a structure, the rotation range of the support frame with respect to the first support shaft is regulated by the first rotation range regulation mechanism provided between the first support shaft and the support frame. By doing so, the support frame is rotatable about the first support shaft within a predetermined range, and the positioning is surely stopped at the limit of the rotation range.

The invention according to claim 6 is the same as claims 1 to 5.
The biaxial hinge device according to any one of claims 1 to 3, wherein a second rotation range regulation is provided between the second support shaft and the support frame to regulate a rotation range of the second member around the second axis. It is characterized in that a mechanism is provided.

With this structure, the rotation range of the second support shaft with respect to the support frame is restricted by the second rotation range restriction mechanism provided between the support frame and the second support shaft. By doing so, the second support shaft can be freely rotated around the support frame within a predetermined range, and the positioning is surely stopped at the limit of the predetermined rotation range.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A biaxial hinge device according to an embodiment of the present invention will be described below with reference to the drawings.

[First Embodiment] FIGS. 1 to 3 show a first embodiment of a biaxial hinge device according to the present invention. Figure 1
In the biaxial hinge device A shown in FIG. 3, the main body mounting member 10 (first member) is provided with the main body supporting shaft 20 (first supporting shaft), and the lid mounting member (second member) 30 is covered. A body support shaft 40 (second support shaft) is provided, and the main body support shaft 20 and the lid support shaft 40 are rotatably provided by being inserted into the inside of the support frame 50. An engagement mechanism 100 is provided between the main body support shaft 20 and the lid support shaft 40.

The support frame 50 has a substantially U-shaped base bracket 51 formed by bending both ends of a rectangular plate.
Shaft holes 52, 52 are formed at both ends of the base hole so that the main body support shaft 20 is rotatably fitted therein, and the central portion of the base bracket 51 is formed. And a shaft tube 53 that extends to the side and is provided so that the lid support shaft 40 is rotatably fitted therein. Further, around the shaft hole 52 on the outer surface 51a of the base bracket 51, a sliding ring storage recess 54 is provided so that the frame side sliding ring 61 is fitted. Further, the outer surface 51a
A rotation range regulating pin 81 is provided on the.

The main body supporting shaft 20 is symmetrical about the central axis, and has, at both ends thereof, narrow convex end portions 21, 21 whose width dimension is smaller than the outer diameter dimension of the main body supporting shaft 20. There is. Here, when the main body support shaft 20 is fitted into the support frame 50, the projecting end portions 21 and 21 of the main body support shaft 20 are supported by the support frame 50.
It has a more protruding length. And the main body support shaft 2
A clip groove 23 into which the engagement / disengagement prevention clip 22 is mounted is provided on the outer periphery of 0.

The engagement / disengagement prevention clip 22 has an outer dimension larger than the inner diameter dimension of the shaft hole 52. Then, when the main body support shaft 20 is moved in the direction of pulling out from the support frame body 50, the main body support shaft 20 comes into contact with the support frame body 50 and is mounted so as to prevent the main body support shaft 20 from being pulled out from the support frame body 50.

Main body support shaft 20 protruding from the support frame 50
The frame side sliding ring 61, the support shaft side sliding ring 62, and the ring-shaped springs 63, 63 (first elastic member) are externally fitted to the convex end portion 21 of the above.

The frame-side sliding ring 61 is fitted in the sliding-ring accommodating recess 54, and the engaging protrusion 54a provided in the sliding-ring accommodating recess 54 is engaged with the engaging notch of the frame-side sliding ring 61. The rotation of the support frame 50 is constrained by the engagement of 61a. Here, the diameter of the hole provided in the center of the frame side sliding ring 61 is made equal to the outer diameter dimension of the main body support shaft 20 so that the main body support shaft 20 can rotate. The side of the frame side sliding ring 61 facing the support shaft side sliding ring 62 is in sliding contact with the sliding surface 62a of the support shaft side sliding ring 62, and the rotation of the supporting shaft side sliding ring 62 Four rotational positioning protrusions 61b, 61b ... Engaging with the positioning notches 62b, 62b ... Are symmetrically arranged about the center.

At the center of the support shaft side sliding ring 62, a hole into which the ridge end 21 is fitted so as to rotate together with the main body support shaft 20 is provided. Further, four rotational positioning notches 62b, 62b, ... with which the rotational positioning convex portions 61b, 61b ... Engage are arranged symmetrically around the peripheral portion.

The ring-shaped springs 63, 63 are washers having an arcuate cross-section that bulges to the one side in the vicinity of the center. The central tops of the washers are butted against each other, and the outer edges of the main body supporting shaft are flat so as to be viewed from the side. It is fitted on 20.

In this way, the frame side sliding ring 61, the supporting shaft side sliding ring 62, and the ridge end 21 of the main body supporting shaft 20 on which the ring-shaped springs 63, 63 are fitted are further supported by the main body. The main body support member 1 is inserted into the support shaft hole 11 provided in the member 10 and the ring-shaped springs 63, 63 are biased.
It is fixed at 0.

The body support member 10 has a rotation range restricting hole 8
2 is formed in a substantially arc shape outside the support shaft hole 11.
Then, the rotation range regulating pin 8 is inserted into the rotation range regulating hole 82.
1 is inserted. The rotation range restriction pin 81 and the rotation range restriction hole 82 cooperate to form a first rotation range restriction mechanism.

The lid support shaft 40 is symmetrical about the central axis, and has an abutting disc 4 that abuts the end of the shaft tube 53 at one end.
1 has a pin stop hole 43 into which the fixing pin 42 is inserted. Further, a fixing portion 44 is provided at the end portion where the contact disk 41 is provided, and the lid attachment member 30 is externally fitted and fixed to the fixing portion 44.
Further, a key portion 45 formed by cutting off a part of the outer periphery is provided at the end portion where the pinning hole 43 is provided.

Lid support shaft 40 fitted in support frame 50
Further, the rotation range regulating plate 90 and the plate spring 91 are
The (second elastic member) and the rotation range restricting disc 92 are externally fitted.

The rotation range restricting plate 90 has a rotation range restricting projection 90a. The rotation range regulating plate 90 is fixed to the support frame 50, and the diameter of the central hole is made equal to the outer diameter dimension of the lid support shaft 40 so that the lid support shaft 40 can rotate.

The plate-shaped spring 91 is formed by bending a plate-shaped metal member with the center at the top.
It is fixed to the rotation range regulating plate 90 so as to be directed to the side.
Further, the central hole is made large enough to allow the lid support shaft 40 to rotate. Further, the plate spring 9
At the top of 1, the two rotary positioning protrusions 91a, 91a are in sliding contact with the sliding surface 92a of the rotary range restricting disc 92 and engage with the rotary positioning notches 92b, 92b ... Of the rotary range restricting disc 92. Are arranged symmetrically across the center line.

The rotation range restricting disc 92 has a rotation range restricting portion 93, and is fitted into a key portion 45 provided on the lid supporting shaft so as to rotate together with the lid supporting shaft 40. The rotation range regulation portion 93 provided on the rotation range regulation disc 92 and the rotation range regulation protrusion 90a provided on the rotation range regulation plate 90 cooperate to form a second rotation range regulation mechanism.

In the pin stop hole 43 provided at one end of the lid support shaft 40, a rotation range regulating plate 90 and a plate spring 91 are provided.
Then, the fixing pin 42 is inserted in a state in which the plate-shaped spring 91 is biased so as to prevent the rotation range restricting disc 92 from being fitted and removed. Thus, the rotation range regulating plate 90 and the plate-shaped spring 91.
Then, the rotation range restricting disc 92 prevents the lid supporting shaft 40 from being fitted into and removed from the support frame 50.

An engaging mechanism 100 is provided between the main body support shaft 20 and the lid support shaft 40 which are rotatably inserted in the support frame 50 as described above. The engagement mechanism 100 is formed on the outer circumference of the main body support shaft 20, and accommodates the tip of the lid support shaft 40 so as to allow the lid support shaft 40 to rotate. A substantially rectangular plate-shaped convex portion 120 formed so that the width and length dimensions are smaller than the outer diameter dimension of the lid support shaft 40 at the tip, and the convex portion 120 are accommodated, and the main body support shaft is connected to the concave portion 110. An outer peripheral groove 130 is formed around the outer periphery of 20.

In the biaxial hinge device A shown in FIGS. 1 to 3, the lid mounting member 30 is inserted through the lid supporting shaft 40 provided on the lid mounting member 30 and the lid supporting shaft 40. It rotates with the support frame 50 around an axis line X (first axis line) passing through the central axis of the main body support shaft 20 inserted into the support frame body 50. Further, the lid attachment member 30 rotates about the axis Y (second axis) passing through the central axis of the lid support shaft 40 inserted into the support frame 50. In this way, the main body support shaft 20
With respect to the main body mounting member 10 provided with, the lid mounting member 30 rotates about the axis X or the axis Y.

The rotation around these two axes is not independent of each other by the engagement mechanism 100 provided between the main body support shaft 20 and the lid support shaft 40. That is, when the lid body mounting member 30 and the lid body support shaft 40 rotate together about the axis X, the biaxial hinge device A operates, for example, as shown in FIG.
In the state shown in FIG. 3, the protrusion 120 provided at the tip of the lid support shaft 40 rotates about the axis Y by contacting the two parallel sides of the protrusion 120 with the side faces of the outer peripheral groove 130. Are engaged with the outer peripheral groove 130 so as to be restrained by the side surface of the outer peripheral groove 130. This convex portion 120 is guided along the outer peripheral groove 130 to the concave portion 110 provided on the outer periphery of the main body supporting shaft 20 as the lid supporting shaft 40 rotates about the axis line X. In this way, the lid attachment member 30 and the lid support shaft 40 rotate about the axis X by a predetermined rotation angle, and the tip of the lid support shaft 40 is recessed 110 provided on the outer periphery of the main body support shaft 20. As shown in FIG.
The engagement state between 0 and the outer peripheral groove 130 is released, and the lid attachment member 30 and the lid support shaft 40 are rotatable about the axis Y. Next, the lid attachment member 30 and the lid support shaft 40
However, when it rotates about the axis Y, the convex portion 120 at the tip of the lid support shaft 40 cannot engage with the outer peripheral groove 130 by the rotation about the axis X, and the rotation about the axis X is restricted. When the lid attachment member 30 and the lid support shaft 40 are in the original state again, that is, the protrusion 120 at the tip of the lid support shaft 40.
Is in a state in which it can be engaged with the outer peripheral groove 130 by rotation about the axis X, the lid attachment member 30 and the lid support shaft 40 are rotatable about the axis X.

As described above, the lid mounting member 30 is rotatable with respect to the main body mounting member 10 about the axis Y at a predetermined rotation angle about the axis X, and is rotated at a predetermined rotation angle about the axis Y. Rotation around X is free.

A predetermined biasing force is applied between the support shaft side sliding ring 62 fixed to the main body support shaft 20 and the frame side sliding ring 61 fixed to the support frame 50 by the ring-shaped springs 63, 63. Is added. When the support frame 50 has a predetermined rotation angle around the axis X, the rotation positioning protrusions 61b, 6b
1b ... Abut on the sliding surface 62a. Therefore, the posture of the support frame 50 is maintained unless a force exceeding the static frictional force acting between the rotational positioning convex portion 61b and the sliding surface 62a is applied by the urging force of the ring-shaped springs 63, 63.

Furthermore, the rotary positioning convex portions 61b, 61b
Is a rotation positioning notch 6 provided on the support shaft side sliding ring 62 by the rotation of the support frame 50 around the axis line X.
When the positions 2b, 62b, ... Are reached, the four rotational positioning protrusions 61b, 61b ... And the rotational positioning notch 62b,
62b ... Engage by the urging force of the ring-shaped springs 63, 63. Therefore, the ring-shaped spring 6 is attached to the support frame 50.
The posture of the support frame 50 is maintained unless the engagement state is released by applying a force exceeding the urging force of 3, 63.

In such an engaged state, four rotational positioning projections 61b and four rotational positioning cutouts 62b are symmetrically arranged about the center, so that the support frame 50 rotates 90 ° around the axis X. Exist for each.

On the other hand, the range of rotation of the support frame 50 around the axis X is regulated by the first rotation range regulating mechanism.
That is, when the support frame 50 rotates about the axis X,
Rotation range regulation pin 81 inserted in rotation range regulation hole 82
However, if the insertion position in the hole is changed and locked at the end of the rotation range restricting hole 82, further rotation is restricted. The rotation range regulation hole 82 is an arc for about one quarter of a circle, and the rotation range of the movable support frame 50 of the rotation range regulation pin 81 is regulated to 90 °. In this way, the main body support shaft 2
The rotation range of the support frame 50 with respect to the main body support shaft 20 is restricted by the first rotation range restriction mechanism provided between the support frame 50 and the support frame 50. It is rotatable within a predetermined range, and the positioning is surely stopped at the limit of the rotation range.

Here, the rotation range regulation pin 81 and the rotation range regulation hole 82 are arranged so that the rotation positioning convex portion 61b and the rotation positioning notch portion 62b engage with each other at both ends of the regulated rotation range. . Therefore, the support frame 5
The rotation around the axis 0 of 0 is reliably positioned and stopped at both ends of the rotation range, and the posture of the support frame 50 is maintained by the biasing of the ring-shaped spring.

A predetermined urging force is applied to the rotation range regulating disc 92 fixed to the lid support shaft 40 by the plate spring 91. When the lid attachment member 30 and the lid support shaft 40 have a predetermined rotation angle around the axis Y, the rotational positioning protrusions 91a and 91a abut on the sliding surface 92a. Therefore, the urging force of the plate-shaped spring 91 causes the rotational positioning protrusion 9
The lid attachment member 30 and the lid support shaft 40 unless a force exceeding the static frictional force acting between the 1a and the sliding surface 92a is applied.
Posture is maintained.

Further, the rotational positioning convex portions 91a, 91a
However, when it reaches the positions of the rotational positioning notches 92b, 92b ... By the rotation of the lid mounting member 30 and the lid support shaft 40 about the axis Y, the rotational positioning protrusions 91a, 91a and the rotational positioning notches 92b, 92b are formed. It is engaged by the biasing force of the plate spring 91. Therefore, the lid attachment member 30
As long as a force exceeding the urging force of the plate-shaped spring 91 is not applied to the cover support shaft 40 and the cover support shaft 40 to release the engaged state, the cover mount member 3
0 and the postures of the lid support shaft 40 are maintained.

In this engagement state, the rotational positioning notches 92b, 92b, ... Are symmetrically arranged with four centers, and the rotational positioning projections 91a, 91a are symmetrically arranged with respect to the center line. It exists every 90 ° when the body support shaft 40 rotates about the axis Y.

On the other hand, the lid mounting member 30 and the lid supporting shaft 40
The range of rotation around the axis Y is regulated by the second rotation range regulation mechanism. That is, the rotation range restricting disc 92
When the rotation range restricting portion 93 provided on the rotary body rotates about the axis Y together with the lid support shaft 40 and is locked to the rotation range restricting projection 90a provided on the rotation range restricting plate 90, further rotation is restrained. To be done. Since the rotation range restricting portion 93 is configured such that the outer edge portion of approximately one quarter of the rotation range restricting disc 92 bulges outward, the movable rotation range of the rotation range restricting portion 93 is Considering the width of the range regulating protrusion 90a, the range regulating protrusion 90a is regulated within 270 °. Thus, the rotation range of the lid mounting member 30 and the lid support shaft 40 with respect to the support frame 50 is regulated by the second rotation range regulation mechanism provided between the lid support shaft 40 and the support frame 50. By doing so, the lid attachment member 30 and the lid support shaft 40 are attached to the support frame 5
It is rotatable about 0 within a predetermined range, and the positioning is surely stopped at the limit of the rotation range.

According to the biaxial hinge device A shown in FIGS. 1 to 3, the main body mounting member 10 and the lid mounting member 30 can be fixed to the main body of the laptop personal computer and the liquid crystal display unit serving as a screen, respectively. For example, the degree of freedom of biaxial rotation can be imparted between these two members, and the desired opening / closing operation and rotation operation of the screen with respect to the main body can be performed.
At this time, the main body support shaft 20 and the lid support shaft 40 are rotatably inserted into the support frame 50, and the engagement mechanism 1 is interposed between these shafts.
The simple structure in which 00 is provided makes it possible to reduce the size of the device that is easy to carry.

[0055]

Second Embodiment Next, a second embodiment of the biaxial hinge device according to the present invention will be described with reference to FIGS. In the biaxial hinge device B shown in FIGS. 4 to 6, the main body mounting member 10 (first member) is provided with the main body supporting shaft 20 (first supporting shaft) and the lid mounting member (second member).
30 is provided with a lid support shaft 40 (second support shaft), and the main body support shaft 20 and the lid support shaft 40 are rotatably provided by being inserted into the support frame 50. An engagement mechanism 100 is provided between the main body support shaft 20 and the lid support shaft 40.

In the biaxial hinge device B shown in FIGS. 4 to 6, parts corresponding to those shown in FIGS. 1 to 3 are designated by the same reference numerals, and the description thereof will be omitted here.

The main body support shaft 20 is symmetrical about the central axis, and the restraint groove 14 is formed at the tip end inserted into the support frame 50.
0 is formed. Further, the main body support shaft 20 has a sliding disk 24 that abuts the base bracket 51 when fitted into the support frame 50 and prevents the main body support shaft 20 from further fitting. . And the engagement / disengagement prevention clip 22
A clip groove 23 is provided on the outer circumference of the cylinder so that can be mounted.

Main body support shaft 20 protruding from the support frame 50
The frame side sliding ring 61 is fitted on the cylindrical part of the above, the support shaft side sliding ring 62 and the ring-shaped springs 63, 63 (first elastic members) are fitted on the convex end 21. Here, the frame side sliding ring 61 is non-circular, is fitted in the sliding ring housing recess 54, and is restricted from rotating with respect to the support frame 50.

The lid support shaft 40 is symmetrical about the central axis, and has a support disk 46 that abuts the base bracket 51 on the side opposite to the shaft tube 53 at one end and a lid body at the other end. A fixing portion 44 to which the mounting member 30 is fitted is provided.

The support shaft 40 of the lid is attached to the support frame 50 by the shaft tube 5.
3, the lid mounting member 30 is externally fitted and fixed to the fixing portion 44. Further, between the lid body mounting member 30 and the shaft tube 53, the mounting ring 5 that enables smooth rotation between the lid body mounting member 30 and the shaft tube 53.
4 are provided. Further, a rotation range restricting plate 90 is provided between the support disk 46 and the base bracket 51.

Lid support shaft 40 fitted in support frame 50
In addition, in the key portion 45 protruding from the support disk 46,
The plate spring 91 (second elastic member) and the rotation range regulating disc 9
2 is externally fitted. Further, a guide convex plate 150 is fixed to the tip of the lid support shaft 40 via a spacer 94 while the plate spring 91 is biased.

An engaging mechanism 100 is provided between the main body support shaft 20 and the lid support shaft 40 which are rotatably inserted in the support frame 50 as described above. The engagement mechanism 100 includes a restraint groove 140 formed at the tip of the main body support shaft 20, a guide convex plate 150 formed on the outer periphery of the lid support shaft 40 and engaged with the restraint groove 140, and a guide convex plate 150. A notch 160 formed in a part and provided so that the engagement with the restraining groove 140 is released and the lid support shaft 40 is rotatable around the axis X.
It has and.

In the biaxial hinge device B shown in FIGS. 4 to 6, the lid mounting member 30 is inserted through the lid supporting shaft 40 provided on the lid mounting member 30 and the lid supporting shaft 40. It rotates with the support frame 50 around an axis line X (first axis line) passing through the central axis of the main body support shaft 20 inserted into the support frame body 50. Further, the lid attachment member 30 rotates about the axis Y (second axis) passing through the central axis of the lid support shaft 40 inserted into the support frame 50. In this way, the main body support shaft 20
With respect to the main body mounting member 10 provided with, the lid mounting member 30 rotates about the axis X or the axis Y.

The rotation around these two axes is not independent of each other by the engagement mechanism 100 provided between the main body support shaft 20 and the lid support shaft 40. That is, when the lid attachment member 30 and the lid support shaft 40 rotate together about the axis X, the biaxial hinge device B may be, for example, as shown in FIG.
It is in a state as shown in. Thus, the notch 160 of the guide convex plate 150 provided on the outer periphery of the lid support shaft 40.
However, when the guide convex plate 150 is disengaged from the restraining groove 140 at the tip of the main body support shaft 20, the lid mounting member 30 and the lid support shaft 40 can rotate about the axis X. Becomes On the other hand, the rotation around the axis Y is restrained because the tip of the main body support shaft 20 prevents the guide convex plate 150 from moving. However, the lid attachment member 30 and the lid support shaft 40 rotate about the axis X by a predetermined rotation angle, and the guide convex plate 150
However, if it becomes possible to enter the restraint groove 140 provided at the tip of the body support shaft 20 without being blocked by the tip of the body support shaft 20, the lid mounting member 30 and the lid support shaft 40 can rotate about the axis Y. become. Next, as shown in FIG. 5, for example, when the lid attachment member 30 and the lid support shaft 40 rotate about the axis Y, the guide convex plate 150 on the outer periphery of the lid support shaft 40 is attached to the tip of the main body support shaft 20. It enters into the restraint groove 140 provided. The guide convex plate 150 is engaged with the restraining groove 140, and the rotation of the lid mounting member 30 and the lid supporting shaft 40 about the axis X is restrained. The lid attachment member 30 and the lid support shaft 40 are
When the original rotation starts again, that is, when the notch 160 of the guide convex plate 150 on the outer periphery of the lid support shaft 40 is located at the tip of the main body support shaft 20, the lid attachment member 30 and the lid support are supported. The shaft 40 becomes rotatable about the axis X.

As described above, the lid mounting member 30 is rotatable with respect to the main body mounting member 10 about the axis Y at a predetermined rotation angle about the axis X, and is rotated at a predetermined rotation angle about the axis Y. Rotation around X is free.

In addition, the biaxial hinge device B shown in FIGS.
Since the functions of the elastic members of the ring-shaped springs 63, 63 and the plate-shaped spring 91 and the first and second rotation range restriction mechanisms are the same as those of the biaxial hinge device A shown in FIGS. Then, detailed description is omitted.

According to the biaxial hinge device B shown in FIGS. 4 to 6, for example, the main body of the laptop personal computer and the liquid crystal display unit serving as a screen are fixed to the main body mounting member 10 and the lid body mounting member 30, respectively. For example, the degree of freedom of biaxial rotation can be imparted between these two members, and the desired opening / closing operation and rotation operation of the screen with respect to the main body can be performed.
At this time, the main body support shaft 20 and the lid support shaft 40 are rotatably inserted into the support frame 50, and the engagement mechanism 1 is interposed between these shafts.
The simple structure in which 00 is provided makes it possible to reduce the size of the device that is easy to carry.

[0069]

As described above, according to the present invention,
A degree of freedom of biaxial rotation can be imparted between two members fixed to both ends of the biaxial hinge device, and the first support shaft and the second support shaft are rotatably attached to the support frame. By inserting and providing an engagement mechanism between these shafts, the structure can be simplified and the size can be reduced. Further, according to the present invention, in rotation around the first and second axes, the rotation angle can be maintained when no external force is applied.
Further, according to the present invention, the rotation range can be limited in the rotation around the first and second axes.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention,
It is a perspective view showing an example of a biaxial hinge device in one state.

FIG. 2 is a diagram showing a first embodiment of the present invention,
It is a perspective view which shows an example of the biaxial hinge apparatus in a two state.

FIG. 3 is a diagram showing a first embodiment of the present invention,
It is an exploded perspective view showing an example of a biaxial hinge device.

FIG. 4 is a diagram showing a second embodiment of the present invention,
It is a perspective view showing an example of a biaxial hinge device in one state.

FIG. 5 is a diagram showing a second embodiment of the present invention,
It is a perspective view which shows an example of the biaxial hinge apparatus in a two state.

FIG. 6 is a diagram showing a second embodiment of the present invention,
It is an exploded perspective view showing an example of a biaxial hinge device.

[Explanation of symbols]

10: Main body mounting member (first member) 20 ... Main body support shaft (first support shaft) 30 ... Lid body mounting member (second member) 40 ... Lid support shaft (second support shaft) 50 ... Support frame 100 ... Engaging mechanism 110 ... Recess 120 ... convex part 130 ... Perimeter groove X: axis (first axis) Y: Axis (second axis)

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Claims (6)

(57) [Claims] 1. A second member is provided rotatably around a first axis or around a second axis with respect to the first member, and the second axis is the second member. Together with the first axis, the rotation about the second axis at a predetermined rotation angle around the first axis is freely rotatable, the first at a predetermined rotation angle around the second axis A biaxial hinge device comprising an engagement mechanism that is rotatable about an axis, wherein the first member is provided with a first support shaft and the second member is provided with a second support shaft. Is provided, the first support shaft and the second support shaft are rotatably provided by being inserted into the inside of a support frame, and the engagement mechanism is provided on the outer periphery of the first support shaft. The second support shaft is formed so as to accommodate the tip of the second support shaft and to be rotatable. And Western provided with recesses, and a convex portion formed on the tip of the second support shaft, it is formed me communication with the recess on the outer periphery of the first support shaft,
An outer peripheral groove that is provided so that the convex portion is housed therein, and the second support shaft is constrained from rotating about the second axis and is rotatable about the first axis. A characteristic biaxial hinge device. 2. The second member is the first member with respect to the first member.
Free to rotate around the axis or around the second axis
Is provided on the second axis together with the second member the first axis
A predetermined rotation angle about the first axis, which rotates around
The rotation around the second axis becomes
At the predetermined rotation angle around the second axis, the first
It is equipped with an engagement mechanism that can rotate around its axis.
A shaft hinge device, wherein a first support shaft is provided on the first member, and
A second support shaft is provided on the second member, and the first support shaft and the second support shaft are the support frame members.
The engagement mechanism is rotatably provided by being inserted inside, and the engagement mechanism is formed at the tip of the first support shaft.
A restraint groove is formed on the outer periphery of the second support shaft, and the first support shaft is formed.
A guide ridge that engages with the restraint groove at the tip and a part of the guide ridge that is engaged with the restraint groove
And the second support shaft is released around the first axis.
This formed by a rotatable and so as provided notched portions
And a biaxial hinge device. 3. A biaxial hinge device according to claim 1 or 2.
There is a first space between the first support shaft and the support frame.
Biaxial hinge device characterized in that an elastic member is provided
Place 4. The biaxial hinge according to any one of claims 1 to 3.
Of the second support shaft and the support frame.
A biaxial hinge characterized in that a second elastic member is provided between them.
Change device. 5. The biaxial hinge according to any one of claims 1 to 4.
A device, in which the first support shaft and the support frame
In between, the range of rotation of the second member about the first axis
The first rotation range regulation mechanism that regulates
Biaxial hinge device to be used. 6. The biaxial hinge according to any one of claims 1 to 5.
Of the second support shaft and the support frame.
In between, the range of rotation of the second member about the second axis
The second rotation range restriction mechanism that restricts
Biaxial hinge device to be used.