JPH051577Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a hinge that serves as the axis for opening and closing the display section of a liquid crystal display, etc., which is mounted like a lid on the main body of a handheld computer, etc. Regarding the mechanism.

[Technical background of the invention]

In OA equipment such as handheld computers and handheld word processors that are equipped with low power consumption liquid crystal displays (hereinafter referred to as LCD) as display devices.
LCD units are generally arranged in a stacked state on the main body for reasons such as effective use of mounting space and protection of the LCD surface, and when in use, the LCD unit is rotated around a predetermined central axis. The operator stands up the
The structure was such that the keyboard could be operated while facing the LCD.

[Problems with background technology]

Since the LCD generally has low brightness and a narrow field of view, the LCD unit is rotated around axis (1) as shown in Figure 6, so that it can be adjusted to the optimum eye angle of the operator. (θ) It has a structure that allows adjustment. However, in order to increase the rotation angle (θ), space 2 (the shaded area) is required, which has the disadvantage of affecting the mounting space inside the housing. Furthermore, when the display device is connected to an external CRT 3 for operation, visibility is poor due to the space 2, so it is necessary to provide a stand (4) for the CRT. In addition, 5 is an LCD, 6 is a case for fixing the LCD, combination 56 is an LCD unit, and 7 is a case for fixing the LCD.
is the main body cover.

[Purpose of invention]

It is an object of the present invention to provide a hinge mechanism that eliminates the above-mentioned drawbacks in handy devices.

[Summary of the idea]

In order to achieve the above object, the present invention provides a main body cover having a first rotation axis, an upper case having a second rotation axis parallel to the first rotation axis, and a first bearing that fits with the first rotation axis and a second bearing that fits with the second rotation axis formed on both end faces of a cylindrical cross section, the upper cover and the lower cover being connected to each other at their respective axes.
a hinge member that connects the divided upper case to the main body cover so as to be freely opened and closed; and a brake means that is provided on a lower cover of the hinge member, integrates the upper case and the lower cover, and generates a frictional force on the second rotating shaft;
By engaging the first rotating shaft of the main body cover and the second rotating shaft of the upper case with the hinge member, rotation about two axes is possible, and by dividing the hinge member into two at the axis of the two bearings, ease of assembly is improved.

[Example of idea]

Fig. 1 is a perspective view showing the details of an embodiment of the present invention in an installed state (within the dashed line in Fig. 4), Fig. 2 is a perspective view showing an example of the structure of the outer frame of the hinge, and Fig. 3 is a biaxial FIG. 4 is a side sectional view showing the rotational movement of the hinge, FIG. 4 is a perspective view showing the entire device, and FIG. 5 is a side view showing the state of connection with an external CRT. In each of the above figures, 1 to 7 indicate the same parts as in FIG. 6. 1st
As shown in the figure, the LCD case 6 has a rotating shaft 6a,
Further, the main body cover 7 is provided with a rotating shaft 7a parallel to the rotating shaft 6a, and furthermore, as shown in FIG. Bearings 8a and 8b are formed, respectively. Furthermore, in order to facilitate assembly, the two-axis hinge 8 is configured to be divided into two parts at the axis of the bearings 8a and 8b into a lower cover 8c and an upper cover 8d. A mounting screw boss 8e is formed for mounting a leaf spring 9 for tightening and fixing the rotating shaft 6a. That is, the plate spring 9 and the mounting screw boss 8e constitute a brake means that generates a frictional force between the rotating shaft 6a and the biaxial hinge 8. Note that 10 shown in FIG. 4 is a keyboard unit.

In assembling this device, the rotating shaft 6a of the LCD case 6 and the rotating shaft 7a of the main body cover 7 are fitted into the bearings 8a and 8b of the lower cover 8c of the biaxial hinge 8, respectively, to brake the rotation of the LCD case 6. For this purpose, the plate spring 9 is tightened and fixed to the screw boss 8e formed on the lower cover 8c (on both sides). continue,
As a result, the rotating shaft 6a of the LCD case 6 and the rotating shaft 7a of the main body cover 7 are fitted into the bearings 8a and 8b of the lower cover 8c integrated with the LCD case 6.
Then, the bearings 8a and 8b of the upper cover 8d are set facing each other, and the upper cover 8d is fitted. Through the above steps, the assembly of the two-axis hinge 8 is completed.

Next, the rotational operation of the LCD unit will be explained. Due to the influence of the leaf spring 9, there is a difference in rotational torque between the two rotating shafts 6a and 7a, and as shown in FIG. Rotate simultaneously from point A to point B using 8b as a fulcrum. From then on, from point B to point C, the LCD unit 56 is rotated by the rotating shaft 6a bearing 8.
Rotate around the fulcrum. This range can be fixed at any angle according to the operator's visual angle by the tightening friction force of the leaf spring 9. In addition, in this invention, in order to secure a larger internal effective space, the ideal angle from point A to point B is 90 degrees, and the case where it is desired to stay within 90 degrees (which does not occur in normal use) is not described. However, it is necessary to consider some kind of collapse prevention process at the position of point B. As a result of the above, the LCD unit rotates (opens and closes) from point A to point B and then to point C.
You can perform operations smoothly.

Although the display device described above is an LCD, it can also be applied to a display device such as a plasma display, or a simple rotary keyboard cover without a display device.

[Effect of idea]

The present invention is as described above, and the two-axis rotation configuration makes it possible to minimize the effect of reduced body space, which is a disadvantage of single-axis rotation, and improves the packaging density inside the housing. As shown in Figure 5, external CRT
This eliminates the need to obstruct the operator's viewing angle during connection, eliminates the need to install a CRT stand, and provides benefits such as cost reduction.

Further, since the hinge member is divided into two parts, an upper cover and a lower cover, at the axis of the first bearing and the second bearing, the hinge member can be easily assembled, and the assembling efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the main parts of an embodiment of the present invention, Fig. 2 is a perspective view showing an example of the structure of the outer frame of the hinge, Fig. 3 is a side view showing the rotational movement of the hinge, and Fig. 4 is a perspective view showing the entire device, and Figure 5 is an external view.
FIG. 6 is a side view showing a state of connection with a CRT, and FIG. 6 is a side view showing a conventional example. 6... LCD case, 6a... Rotating shaft, 7...
Body cover, 7a...rotating shaft, 8...two-axis hinge, 8a, 8b...bearing, 8e, 9...braking means.

Claims (1)

[Scope of utility model registration request] a main body cover having a first rotation axis;
an upper case having a second rotation axis parallel to the rotation axis of the upper case; a first bearing formed on both end surfaces of a cylindrical cross-section that fits with the first rotation axis; and a first bearing that fits with the second rotation axis; a hinge member that is divided into an upper cover and a lower cover at the axis of the second bearing that fits together and connects the upper case to the main body cover in an openable and closable manner; A two-axis hinge mechanism, characterized in that the upper case and the lower cover are integrated, and the mechanism includes a brake means that generates a frictional force on the second rotating shaft.