JP2001042796A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize the above device by arranging two display screens openable to a double spread state in proximity to an opening/closing shaft part as far as possible. SOLUTION: This display device is constituted by connecting a left unit 10 and a right unit 20 respectively having liquid crystal display elements via the opening/closing shaft part. The left and right units 10 and 20 are composed of exterior cases 12 and 22 and inner covers 13 and 23 and the opening/closing shaft part sides of the inner covers 13 and 23 are fixed by the engagement of semi-cylindrical parts 62 and 64 with semi-cylindrical parts 61 and 63 of the exterior cases 12 and 22. The opposite sides thereof are fixed by screwing of screws 76 to boss parts 75.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device,
The present invention relates to a display device capable of opening a display element made of liquid crystal or the like in a two-page state.

[0002]

2. Description of the Related Art Conventionally, in a notebook personal computer or a word processor, an outer case having a liquid crystal screen is rotatably connected to a main body case with a hinge portion as a fulcrum.
The LCD screen can be opened and closed. In this case, the inner cover for fixing the liquid crystal display element to the outer case is screwed to the outer case at least on the hinge side.

However, the screwing method requires a space for providing a screw and a screw hole, and has been an obstacle to miniaturization of personal computers and the like. Further, when two screens are arranged in a two-page spread state, it is preferable that the two screens be as close as possible. However, such a close arrangement is impossible by the screwing method.

[0004] Regarding the structure of the opening and closing hinge portion,
As described in JP-A-6-17277,
A mechanism has been proposed in which a taper-shaped uneven surface is pressed into contact with a screw by tightening a screw to generate a frictional resistance force when opening and closing.
However, the generation of frictional resistance on the tapered uneven surface requires a delicate adjustment for screw tightening, and if the adjustment is insufficient, the operability of opening and closing is reduced. Also,
This may cause a reduction in assembly workability.

Accordingly, an object of the present invention is to provide a display device in which two display screens that can be opened in a double-page spread state are arranged as close as possible to an opening / closing shaft portion so as to reduce the size of the device. .

Another object of the present invention is to provide a display device in which a mechanism for providing a frictional resistance that is easy to assemble with a simple configuration is incorporated in an opening / closing shaft portion of two display screens that can be opened and closed in a two-page spread state. It is in.

[0007]

In order to achieve the above objects, the present invention provides a first and a second display device each having a display element.
In a display device in which the units are connected via an open / close shaft provided at one end of each other, and when opened, the two display elements are arranged in a two-page spread state, the first and second units each include an outer case and a display. An inner cover having an opening corresponding to the element, wherein the inner cover is fixed to the outer case at least on the opening / closing shaft side by an engaging portion.

In the present invention having the above structure, the opening / closing shaft portion side of the display element is fixed to the outer case by an engaging portion instead of a screw member, and the engaging portion is compactly configured to overlap the opening / closing shaft portion. Therefore, the space for providing the screw and the screw hole can be omitted, and the size of the display device itself or the area of the display screen can be increased.

In the present invention, if the engaging portion is formed on the opening / closing shaft portion, or if it constitutes a part of the opening / closing shaft portion, it becomes more compact.

[0010] The end of the display screen is preferably located within 20 mm from the central axis of the spread from the viewpoint of compactness of the apparatus.

Further, in the display device according to the present invention,
The opening and closing shaft is provided with a frictional resistance mechanism that overlaps arms protruding from the outer cases of the first and second units and presses at least one arm with a screw and a nut. .

The frictional resistance mechanism provides an appropriate resistance to the opening and closing of the unit to improve the feel of operation. Since at least one arm is press-fitted with a screw and a nut, it is easy to tighten the screw only. Thus, a desired frictional resistance can be obtained. In addition, sliding at the time of opening and closing occurs only between the arms, there is no sliding of the screws and nuts, and the screws do not tighten or loosen.

Further, in the display device according to the present invention,
In the opening / closing shaft portion, a cylindrical portion formed by coupling each of the outer cases of the first and second units and a substantially semi-cylindrical portion formed at one end of the inner cover is arranged. A wiring for electrically connecting the second unit is accommodated therein.

The opening / closing shaft is a part that is frequently rotated.
If the wiring is passed here, the wiring may be twisted and disconnected, but if the wiring is passed through the cylindrical portion provided on the opening / closing shaft portion, the torsion is relaxed at the linear portion passing through the cylindrical portion, and problems such as disconnection may occur. Absent.

[0015]

Embodiments of a display device according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a display device according to an embodiment of the present invention.
It is composed of a left unit 10 and a right unit 20 provided with 1, 21. The left and right units 10 and 20 are connected to each other so that the liquid crystal display elements 11 and 21 can be opened and closed by the open / close shaft 30.

Each of the units 10 and 20 includes an outer case 1
2, 22; inner covers 13, 23; and a control board (not shown). The inner covers 13 and 23 are for fixing the liquid crystal display elements 11 and 21 to the outer cases 12 and 22 and are frame-shaped bodies having openings 13a and 23a corresponding to the screens of the liquid crystal display elements 11 and 21. (Figure 2
reference).

(Structure of Opening / Closing Shaft) The opening / closing shaft 30 has friction resistance mechanisms 31, 31, hinges 32, 32, and wirings 33, 33 arranged in a straight line.

First, the hinge 32 will be described. As shown in FIG. 3, the hinge unit 32 is
Arms 41 and 42 projecting from the outer case 12 of the right unit 20, and arms 51 and 5 projecting from the outer case 22 of the right unit 20.
2 are fitted, and the respective through holes 41a, 42a, 5
The shaft 34 is inserted into 1a and 52a. Therefore, the left and right units 10 and 20 are opened and closed with the shaft 34 as a fulcrum.

The shaft 34 is inserted in the direction of arrow A, and its position is regulated in the insertion direction by the thin section 43 of the arm section 41.
In the direction opposite to the arrow A, the screw is prevented from coming off by an adjusting screw 37 described below. Also, the left and right units 10,
When disassembling 20, small holes 55 a formed in
By inserting a small diameter pin (not shown) into a small hole 43a formed in the thin section 43, the shaft 34 can be pushed out in the direction opposite to the arrow A and pulled out from the through hole.

Next, the frictional resistance portion 31 will be described.
As shown in FIG. 3, the friction resistance portion 31 sandwiches the arm portion 53 projecting from the right exterior case 22 between the arm portions 44 and 45 projecting from the left exterior case 12, and forms a hole 45 a of the arm portion 45.
And a hole 44a in the arm 44.
An adjustment screw 37 is screwed into the nut 36 from the spacer 35 through the hole 53 a of the arm 53.

The spacer 35 is movable in the thrust direction and is prevented from rotating in the radial direction by fitting a protrusion 35a formed on the outer peripheral portion thereof into the groove 45b of the hole 45a. The nut 36 is formed by a projection 3 formed on the outer periphery thereof.
6a is fitted in the groove 44b of the hole 44a, so that it is movable in the thrust direction and is prevented from rotating in the radial direction.

Therefore, when the adjusting screw 37 is screwed into the nut 36, the spacer 35 and the nut 36
Tighten. This tightening force acts as a frictional resistance force when the units 10 and 20 are opened and closed, and gives the user a good operation feeling.

Such frictional resistance can be arbitrarily set by adjusting the degree of screwing between the adjusting screw 37 and the nut 36. In addition, when the units 10 and 20 are opened and closed, the end surfaces of the spacer 35 and the nut 36 and the end surface of the arm portion 53 come into sliding contact with each other, and no rotational force acts on the adjusting screw 37.
The tightening force (frictional resistance) by the adjusting screw 37 does not change. Further, the hole 53a of the arm 53 is formed to be slightly larger than the outer diameter of the adjusting screw 37.
Therefore, the rotation force is not applied to the adjustment screw 37.

On the other hand, another configuration shown in FIG. 7 may be employed for the friction resistance portion 31. This friction resistance portion 31
The arm portion 53 projecting from the outer case 22 is sandwiched between the arm portions 44 and 45 projecting from the outer case 12, and the adjusting screw 37 is inserted into the holes 45 a, 53 a and 44 a and screwed into the nut 36. It was done.

According to this structure, the arm 4 is opened and closed.
4, 53 and 45, 53 are in sliding contact with each other, and no rotational force acts on the adjusting screw 37, so that the adjusting screw 37 is not loosened and the frictional resistance does not change.

Next, the wiring section 33 will be described. The wiring portion 33 includes a wiring 70 for electrically connecting between control boards (not shown) provided in the units 10 and 20.
(See FIG. 5), and the wiring 70 is connected to the unit 1
The configuration is such that the disconnection does not occur due to the twist associated with the opening and closing of 0 and 20. Note that, in the present embodiment, the wiring 70 is shown by bundling a large number of wires, but may be printed on a flexible substrate.

More specifically, as shown in FIG. 2, the semi-cylindrical portions 61 provided on the left outer case 12 and the left inner cover 1 are provided.
A cylindrical portion is formed by joining the semi-cylindrical portions 62 provided in 3 with each other. At the same time, the semi-cylindrical portions 63, 63 provided on the right outer case 22 and the semi-cylindrical portions 64, 64 provided on the right inner cover 23 are combined to form a cylindrical portion. These cylindrical portions are arranged such that their axes coincide with the frictional resistance portion 31 and the hinge portion 32.

More specifically, as shown in FIG. 4, the lower semi-cylindrical portions 61, 63 have slit-shaped openings 61a,
63a is formed, and one end is formed as partition walls 61b and 63b.
The other ends are open portions 61c and 63c. Also, a concave portion 65 is formed in each of them. Upper semi-cylindrical part 6
One end of each of the two members 64 is a partition wall 62b, 64b, and the other end is an open part 62c, 64c. Also, a convex portion 66 is formed on each of them.

The semi-cylindrical portions 61, 62 and 63, 64 are integrated by engaging the convex portion 66 with the concave portion 65, and the cylindrical portion 6 communicated with the open portions 61c, 62c, 63c, 64c.
0, 60 (see FIG. 1). As shown in FIG. 5, the wiring 70 is housed in the semi-cylindrical portions 61 and 63 in a state where the outer cases 12 and 22 are connected to each other.
3a. Thereafter, the inner covers 13 and 23 are assembled and the concave and convex portions 65 and 66 are engaged to form the cylindrical portion 60.

The wiring 70 is bent in a crank shape by being accommodated in the cylindrical portion 60, and has a linear portion on the rotation axis having a length B shown in FIG. Units 10, 20
When the wire 70 is opened and closed, the wiring 70 receives a torsional force, but this torsional force is almost absorbed by the linear portion having the length B. Suppose wiring 7
If 0 passes through the opening / closing shaft portion 30 in a perpendicular state, bending stress acts directly on the wiring 70. However, in this embodiment, a torsional force acts instead of the bending stress,
Since this is absorbed by the linear portion, a problem such as disconnection of the wiring 70 is avoided.

The linear portion on the rotation axis of the wiring 70 is covered and bound by a rounded resin sheet 71. The sheet 71 has a curl so as to be curled, and has a function of not only binding the wiring 70 but also protecting the resin covering the wire. That is, the cylindrical portion 60 is provided with the open portions 61c to 64c.
It is divided in the axial direction at c, and its end faces are relatively rotated and rubbed by the opening / closing operation. At this time, the end surface comes into contact with the wiring 70 to cause friction, and the coating resin is scraped. The resin sheet 71 prevents such abrasion of the coating resin.

As for the wiring portion 33, as shown in FIG. 8, key-shaped engaging portions 67 and 68 are provided on each of the semi-cylindrical portions 61 and 62 and / or 63 and 64 to fix them. It may be. Further, as shown in FIG. 9, a concave portion 63b 'and a convex portion 64b' may be formed in the partition walls 63b, 64b of the semi-cylindrical portions 63, 64 so as to fit each other. Although not shown in FIG. 9, the semi-cylindrical portion 6
Similar irregularities may be formed on the partition walls 61b and 62b.

By fitting the ends of the semi-cylindrical portion with the concave and convex portions in this way, it is possible to prevent the semi-cylindrical portion from opening due to warpage or distortion.

(Fixing Structure of Inner Cover) Inner Covers 13 and 2
Numeral 3 is for holding the liquid crystal display element in the outer cases 12 and 22 and is fixed to the outer cases 12 and 22 on the opening / closing shaft portion 30 side and the opposite side. On the opening / closing shaft portion 30 side, the semi-cylindrical portions 62 and 64 are
Engaging with the 22 semi-cylindrical portions 61, 63, specifically, as shown in FIG. The opposite side is, as shown in FIG. 2, a boss 75 protruding from the outer cases 12 and 22.
Is fixed by screwing a screw 76 into the screw.

Note that circular protrusions 24, 24 are formed at the corners of the inner covers 13, 23 (see FIG. 2). The projecting piece 24 is for closing the end of the frictional resistance portion 31.

As described above, the outer case 12, 22 is connected by the hinge 32, the wiring 70 is disposed on the cylindrical portion 60, and then the inner cover 13, 23 is attached, whereby the wiring 70 is wrapped in the cylindrical portion 60. Since it is fixed by the fixing, the assembling can be easily performed.

In particular, as in this embodiment, the inner cover 13,
When the opening / closing shaft portion 30 side of 23 is fixed to the exterior cases 12 and 22 by engaging portions instead of screwing, the installation space for screws can be omitted, and therefore the distance C from the rotation axis to the end of the liquid crystal display screen is reduced. (See FIG. 1) can be set shorter, and this type of display device can be made more compact. In the present embodiment, the distance C can be kept within, for example, 20 mm.

In particular, if the engaging portions (semi-cylindrical portions 62, 64) of the inner covers 13, 23 are formed on the opening / closing shaft 30, or if they constitute a part of the opening / closing shaft 30, , More compact.

Various modifications can be considered for the fixing structure of the inner covers 13 and 23.

For example, as shown in FIG. 10, the opening / closing shaft portion is fixed by using a substantially cylindrical engaging portion 27 and a cylindrical engaging portion 28 having a notch into which these can be fitted. It may be engaged. In this case, the engagement state of the engagement portions 27 and 28 is shown in FIG.
As shown in FIG. As shown in FIGS. 12 and 13, the size of the engaging portion 27 is made smaller than the size of the engaging portion 28 in the longitudinal direction (axial direction), and
Receiving portion 28a, drawer portion 28b, and engaging portion 27
May be made to function as the engagement portions 28c. Further, for fixing the opposite side, a screw 76 may be screwed into the screw hole 77 of the holder 15 for holding the liquid crystal display element in the outer case 12.

(Other Embodiments) The display device according to the present invention is not limited to the above embodiment, but can be variously modified within the scope of the gist.

In particular, the internal structure of the outer case and the configuration of the operation unit are arbitrary. Further, the frictional resistance portion 31 and the hinge portion 3
Various modes can be considered for the configuration of the wiring section 2 and the wiring section 33.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a display device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an outer case and an inner cover of the display device.

FIG. 3 is a sectional view showing a frictional resistance portion and a hinge portion of the display device.

FIG. 4 is a perspective view showing a wiring portion of the display device.

FIG. 5 is a perspective view showing a state of wiring to the outer case.

FIG. 6 is a perspective view showing wiring in the wiring section.

FIG. 7 is a perspective view showing another example of the hinge section.

FIG. 8 is a sectional view showing still another example of the hinge section.

FIG. 9 is a perspective view showing another example of the wiring section.

FIG. 10 is a perspective view showing another example of the fixing structure of the inner cover.

FIG. 11 is an elevational view showing the fixing structure shown in FIG. 10;

FIG. 12 is a perspective view showing a modification of the fixing structure shown in FIG. 10;

FIG. 13 is an explanatory view of a main part of the fixing structure shown in FIG. 12;

[Explanation of symbols]

 10, 20 unit 11, 21 liquid crystal display element 12, 22 outer case 13, 23 inner cover 27, 28 engaging part 30 opening / closing shaft part 31 frictional resistance part 32 hinge part 33 wiring part 36 ... Nut 37 ... Adjustment screw 41,42,44,45,51,52,53 ... Arm part 60 ... Cylindrical part 61,62,63,64 ... Semi-cylindrical part 70 ... Wiring 71 ... Resin sheet 76 ... Fix inner cover Screw

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C094 AA14 AA15 AA36 AA41 AA47 AA56 BA43 DA01 DB05 FA01 HA10 JA08 5G435 AA09 AA17 AA18 BB12 BB15 CC09 EE02 EE05 EE08 EE13 EE16 EE47 EE49 GG42 KK02

Claims (10)

[Claims] 1. A first and a second device each having a display element.
A display element in which the units are connected via an open / close shaft provided at one end of each other, and when opened, the two display elements are arranged in a two-page spread state, wherein the first and second units each include an outer case, a display element, And an inner cover having an opening corresponding to the screen of (1), wherein the inner cover is fixed to the outer case at least on an opening / closing shaft side by an engaging portion. 2. The display device according to claim 1, wherein the engaging portion is formed on the opening / closing shaft portion. 3. The display device according to claim 1, wherein the engagement portion forms a part of the opening / closing shaft portion. 4. The display device according to claim 1, wherein a side of the inner cover opposite to the opening / closing shaft is screwed to the outer case. 5. A holder for mounting the display element is fixed to the outer case, and a side of the inner cover opposite to the opening / closing shaft side is screwed to the holder. Item 2. The display device according to Item 1. 6. A display device having two display screens that can be opened in a two-page spread state, wherein opposing one ends of the two display screens are located within 20 mm from a central axis of the two-page spread. Display device. 7. A first and a second device each having a display element.
A display element in which the units are connected via an open / close shaft provided at one end of each other, and when opened, the two display elements are arranged in a two-page spread state. A display device, comprising: a friction resistance mechanism for superimposing arms protruding from the case and pressing at least one arm by a screw and a nut. 8. First and second display devices each having a display element.
A display element in which the units are connected via an open / close shaft provided at one end of each other, and when opened, the two display elements are arranged in a two-page spread state, wherein the first and second units each include an outer case, a display element, And an inner cover having an opening corresponding to the screen. The opening / closing shaft portion includes outer casings of the first and second units and a substantially semi-cylindrical portion formed at one end of the inner cover. A display device, comprising: a cylindrical portion formed by combining the first and second units; and a wiring for electrically connecting the first and second units is accommodated in the cylindrical portion. 9. The display device according to claim 8, wherein fitting portions for fitting with each other are formed in each of the substantially semi-cylindrical portions of the outer case and the inner cover. 10. The wiring comprises a large number of wires,
The display device according to claim 8, wherein the wire is wound around a binding sheet in the cylindrical portion.