JP2514674Y2 - Display panel opening / closing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a display panel in a small electronic device or the like which is connected to rotate around a support shaft interposed between a device case or a hinge member. Regarding opening and closing structure.

[Prior Art] Conventionally, in a device case of a compact type electronic device, a tubular hinge member is provided at both ends of each connection part of a key input case having a key input part and a display case having a display panel, It has a structure in which it is connected to be openable and closable by rotating around a support shaft interposed between them.

In such a device case, the information displayed on the display panel may be difficult to see due to light rays or the like between the closed state with the folding angle of 0 ° and the fully opened state with the folding angle of 180 °. In order to solve the problem, the display case is held at a certain tilt position. As a locking mechanism for stopping the rotation of the device case with respect to the hinge member for that purpose, an integral locking projection is formed on the hinge member and the device case, or the device case is opened by rotation by a gear. It has an open / close structure for the display panel.

[Problems to be Solved by the Invention] However, in such an opening / closing structure for a display panel, when locking protrusions are formed on the hinge member and the device case, they are hit by the mutual locking protrusions. There are drawbacks such that the operation cannot be performed smoothly and the durability is poor due to fatigue due to the wear and impact. In addition, when the gear is rotated, the structure becomes complicated, and a click is generated at every predetermined opening / closing angle, and the abnormal noise becomes harsh.

This invention was made in view of the above circumstances,
An object of the invention is to provide a display panel opening / closing structure having a locking structure for locking the rotation of the display case, which is excellent in durability and does not generate an abnormal sound due to a click, in a device case of a compact type electronic device. To do.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the display panel opening / closing structure according to the present invention has a support case or a hinge member provided with a locking projection, and a roll on the display case. An elastic body for supporting the roll is provided, and the elastic force of the elastic body holds the display panel at an inclination angle at which the roll abuts on the locking projection, and the roll is engaged by a torque equal to or greater than the elastic force of the elastic body. The display panel is moved further to the end surface of the stop projection so as to be opened further.

[Operation] In the display panel opening / closing structure having such a configuration,
The display panel is held at a predetermined inclination angle by supporting the state in which the roll is in contact with the locking projection with the elastic body against a torque smaller than the elastic force of the elastic body. However, when a torque exceeding the elastic force of the elastic body acts, the elastic body is deformed by this, and the position of the roll moves relatively outward with respect to the locking projection. For this reason, the rolls cross over the end faces of the locking projections, and the display panel is further released from the above-described tilt angle.

[Embodiment] An embodiment in which the present invention is applied to a small-sized electronic computer will be described below with reference to FIGS.

First, FIG. 7 shows the appearance of a so-called compact type small computer.

This small electronic computer is provided with a device case 3 including a key input case 1 (support case) and a display case 2, and a hinge storage section 4 provided at a connecting portion between the key input case 1 and the display case 2, 5, a long and wide hinge member 6 is arranged, and as will be described later, the cases 1 and 2 are connected to the hinge member 6 so as to be rotatable about different central axes. Has become. On the surface of the key input case 1 facing the display case 2, a key input unit 7 for inputting information such as calculation data is provided. Above the surface of the display case 2 facing the key input case 1, a display panel 8 including a liquid crystal display panel for displaying the calculation data input by the key input unit 7 and the calculation results thereof is provided. There is. Although not shown, inside the display case 2 below the display panel 8, there is provided a circuit board on which a plurality of electronic components constituting an electronic circuit section of the small electronic computer are mounted. This circuit board is electrically connected to the display panel 8 via a flexible film (not shown).

Next, FIGS. 1 to 3 show the main part of the internal structure of this small computer.

The key input case 1 is composed of an outer case 11 and an inner case 12 which are joined together by a bis (not shown), and a hinge storage portion 4 is provided in a notched portion of both ends of one end thereof. The display case 2 is composed of an outer case 13 and an inner case 14 which are joined together by screws (not shown). The hinge storage part 5 is provided in the notched portion as in the key input case 1 except for both sides of one end thereof. It is provided.

The hinge member 6 is a substantially symmetrical outer hinge half.
61 and an inner hinge half body 62, which are connected to each other by screws (not shown) in a state where they are overlapped with each other to form a structure having a substantially oval cross section. Two hinge shafts are provided at both ends of the hinge member 6 coupled in this way, and the key input case 1 is connected to the key input case 1 via the one spindle 17 arranged in the hinge storage portion 4 of the key input case 1. The display case 2 is rotatably attached, and the display case 2 is rotatably attached via the other support shaft 18 arranged in the hinge housing portion 5 of the display case 2. As a result, the key input case 1 and the display case 2 are different from each other with respect to the hinge member 6.
It means that they are rotatably connected to each other around 0 and 90 degrees about 17 and 18.

When the inner hinge half body 62 is provided with flange portions at both ends in the width direction, and one of the flange portions is arranged inside the hinge storage portion 4 of the key input case 1, when the key input case 1 is fully opened at 90 °. , Key input case inner case
12 is provided with a locking projection 15 that engages with the locking surface 16 on the inner surface, and the other flange portion is arranged in the hinge storage portion 5 of the display case 2 so that the display case 2 is fully opened at 90 °. A locking projection 9 is provided on the inner surface of the inner case 14 of the display case, which engages with a roll 10 to be described later when it is held at an inclined position on the way to the end.

Further, a concave portion 63 is formed over a predetermined range on the inner surface side of the outer hinge main body 61, and the flexible film 20 is inserted into the concave portion 63. The flexible film 20 is for electrically connecting the key input section 7 provided in the key input case 1 and the circuit board provided in the display case 2, and one end thereof is connected to the key input section 7. , The middle of which passes through the inside of the hinge member 6 via the recess 63 of the inner hinge half 62, and the other end is connected to the circuit board.

A locking mechanism 40 for holding the display case 2 in an inclined position is provided on the inner surface of the inner case 14 of the display case 2 in the vicinity of the hinge storage portion 5. The locking mechanism 40 is a roll 10 made of hard rubber that engages with the locking projection 9 of the hinge member 6, and an elasticity that is a torsion coil spring that supports the roll 10 on the inner surface of the inner case 14 of the display case 2. Consists of a body 30. Accordingly, the roll 10 is configured to rotate and to be elastically pressed by the elastic body 30 at all times. Therefore, the roll 10 receives a constant elastic pressure of the elastic body 30 according to the opening / closing of the display case 2, and The surface and the locking projection 9 are traced.

The elastic body 30 is not limited to the torsion coil spring, but may be one that supports the roll 10 by a leaf spring.

Next, the opening / closing operation of the display case 2 in this small computer will be described.

First, FIG. 1 shows a state in which the display case 2 is closed with respect to the key input case 1. In this state, the display case 2 is superposed on the key input case 1,
Further, both hinge halves 61, 62 are in a state of standing substantially vertically, and the roll 10 is in a stopped position, pressing the surface of the inner hinge halves 62. Further, the flexible film 20 has a bending angle of about 90 ° at each of the portions protruding from the recess 63 of the hinge member 6.

From this state, the display case 2 is different from the key input case 1.
When the display case 2 is opened, the display case 2 is rotated around the support shaft 18, and as shown in FIG.
At a position rotated by about 45 ° with respect to, the roll 10 moving together with the display case 2 rotates the surface of the inner hinge half body 62, and at the same time, the rounded portion 64 formed at the tip of the locking projection 9 thereof. Is engaged with. During this time, the hinge member 6 and the key input case 1 relatively rotate about the support shaft 17. When the display case is further opened, since the locking projection 9 of the inner hinge half 62 is engaged with the roll 10, the rotatable hinge member 6 is further rotated around the support shaft 17. The locking projection 15 of the inner hinge half 62 contacts the locking surface 16 which is the inner surface of the inner case 12 formed in the hinge housing portion 4 of the inner case 12 of the key input case 1. Then, in such a state, the display panel is temporarily held at the inclined position.

From this state, when the display case 2 is further opened with respect to the key input case 1, the elastic body 30 which is a torsion coil spring is acted by the action of a predetermined torque or more for opening the display case 2.
Is bent, and by the bending, the engagement between the outer surface of the roll 10 and the circular cutout portion 64 of the locking projection 9 can be released. Further, when the display case 2 is opened with respect to the key input case 1 from this state, as shown in FIG.
The elastic body 30 elastically presses the surface of the outer hinge half body 61 while rotating, and the rotation and elastic pressure of the roll 10 brakes the opening and closing of the display case. And display case 2
Is the maximum angle with respect to key input case 1, that is, 180 °
Will be rotated to the position.

Therefore, the roll 10 and the elastic body that supports the roll 10
Internal hinge halves 62 from FIG. 2 to FIG. 3 caused by the provision of 30 and 30 in the inner case 14 of the display case 2.
The locking process operation by the locking projection 9 of
Further description will be given with reference to FIGS.

When the display case 2 is opened from the closed state with respect to the key input case 1, the roll 10 supported by the elastic body 30 of the torsion coil spring provided on the inner surface of the inner case 14 of the display case 2 moves to the inner hinge half. The surface of the inner hinge half 62 is rotated until it reaches the locking projection 9 formed on the body 62. As shown in FIG. 4, there is a convex portion 65 that must be climbed over in order to engage the roll 10 with the rounded portion 64 formed at the tip of the locking projection 9. When the roll 10 is pressed and the elastic body 30 which is a torsion coil spring is twisted and bent as shown by an arrow a, the roll 10 is moved from the broken line to the solid line. Therefore, the roll 10 is engaged with the rounded portion 64 and the inclined position of the display case 2 can be maintained.

Next, when the display case 2 is further opened from the state where the display case 2 is temporarily held at the inclined position, the roll 10 provided in the inner case 14 of the display case 2 is pushed and the elastic body 30 of the torsion coil spring 30 is pushed. The roll 10 is moved from the broken line to the solid line by twisting and bending as shown by the arrow b. At this time, it is necessary to give a torque action of a predetermined value or more sufficient to get over the reversing portion 66 at the tip of the locking projection 9.
As shown in FIG. 6, when the reversing portion 66 is crossed over, the flexure due to the torsion of the elastic body 30 of the torsion coil spring is returned to enable the reversing. Then, the outer surface of the roll 10 is moved to the end surface 67 of the locking projection 9. Then, when the display case 2 is further opened, the roll 10 rotates the surface of the outer hinge half 61 while restricting its rotation, and the display case 2 is opened beyond the inclined position. Become.

The above is the case of opening the display case 2 with respect to the key input case 1, but when closing the display case 2 in the inclined position as shown in FIG.
If the roll 10, which engages with the rounded portion 64 of the locking projection 9 formed on 62, rides over the low convex portion 65 in front of it by absorption due to the small bending of the roll 10 and the elastic body 30, Well, since the locking projection 15 of the inner hinge half body 62 merely abuts on the locking surface 16 of the inner case 12 of the key input case 1, it is displayed with a relatively weak operating torque. Case 2 can be closed.

On the other hand, when the display case 2 at the fully opened position is closed as shown in FIG. 3, the roll 10 rotating on the surface of the outer hinge half 61 is provided with the reversing portion 66 of the locking projection 9. Is to be able to overcome. The inversion part
In order to get over 66, the roll 10 can be flexed, but the elastic body 30 of the torsion coil spring is largely flexed by torsion, which requires relatively strong torque. And
The roll 10 that has passed over the reversing portion 66 is engaged with the rounded portion 64, and the display panel is temporarily held at the inclined position. Therefore, in order to close the display case 2, a torque action of a predetermined value or more must be applied until the state shown in FIG. 2 is reached.

The rotation of the roll 10 due to the rotation of the display case is reversed between the surface of the outer hinge half 61 and the surface of the inner hinge half 62 at the reversing portion 66 of the locking projection 9.

Thus, in this small computer, when the display case 2 is opened with respect to the key input case 1 at an angle slightly larger than 90 ° as shown in FIG. 2, the display case 2 is stopped at this open position. Then, the display case 2 is held in the inclined position shown in FIG. Further, at the position where the display case 2 is opened to the maximum as shown in FIG. 3 from this open position, the display case 2 is restricted from being rotated by the rotation of the roll 10 in either opening or closing direction. Therefore, the display case 2 is stable, and the operation such as key input is easy in this state. In addition, it operates smoothly and has excellent durability.
Easy to handle as no abnormal noise is generated by clicking.

In the above-mentioned embodiment, the opening / closing structure of the display panel is described in which the support shaft of the hinge member is biaxial, but it can be applied to a single shaft. In this case, the hinge member 6 is integrated with the key input case 1, and the display case 2 is opened and closed with respect to this.

In addition, in the above-described embodiment, the case where the present invention is applied to a small electronic computer having a so-called compact pipe has been described, but the present invention is not limited to this and can be widely applied to small electronic devices having an openable / closable device case. it can.

[Effects of the Invention] As described above, according to the small electronic device of the present invention, the display case with respect to the key input case can be temporarily held in the inclined position, and further opening can be performed with a simple structure. I can. In addition, since the roll and the elastic body that supports the roll are used for the locking mechanism for opening and closing the display case, the operation is smooth and there is no wear or impact, so it has excellent durability and the generation of abnormal noise by clicking. You can also hold down.

[Brief description of drawings]

1 to 6 are for explaining one embodiment of a small electronic device according to the present invention, of which FIG. 1 is a main part showing a state in which the display case is closed with respect to the key input case. FIG. 2 is a vertical cross-sectional view showing a state in which the display case is opened at an inclined position with respect to the key input case, and FIG. 3 is a state in which the display case is fully opened with respect to the key input case. It is a longitudinal cross-sectional view of a main part. 4 to 6 are for explaining the operating state of the engagement of the locking mechanism in the state where the display case in FIG. 2 is opened to the inclined position, and FIG. FIG. 5 is a sectional view of an essential part in a state where the engagement is about to be disengaged, and FIG. 6 is a sectional view of an essential part in a disengaged state. FIG. 7 is an external view of this small computer. 1 ... key input case (support case), 2 ... display case, 3 ... equipment case, 6 ... hinge member, 7 ... key input part, 8 ... display panel, 9 ... locking projection, Ten……
Rolls, 11, 13 ... Outer case, 12, 14 ... Inner case, 15 ... Locking protrusion, 16 ... Locking surface, 17, 18 ... Shaft, 30 ... Elastic body, 40 ... … Locking mechanism, 61 …… External hinge half, 62 …… Internal hinge half, 64 …… Circular cutout, 65 ……
Convex part, 66 ... Inversion part.

Claims (1)

(57) [Scope of utility model registration request] 1. A display panel that can be rotated about a support shaft that is interposed between a support case or a hinge member, is held at an inclination angle, and can be opened and closed at a larger angle. In the structure, a protrusion formed on the support case or the hinge member, an elastic body attached to a display case for accommodating the display panel, and a roll rotatably attached to a tip portion of the elastic body are provided. Then, at a tilt angle, the roll is brought into contact with the protrusion to hold the display panel at a tilted position, and the elastic body is bent to act on the outer surface of the roll with respect to the action of torque of a predetermined value or more. An opening / closing structure for a display panel, characterized in that the display panel is opened to a tilt angle or more by moving the roll to the end face of the protrusion and then rotating the roll.