JPH0710538Y2 - Electronic application device - Google Patents

Description

[Detailed description of the device] [Industrial applications]

This invention is a device in which a lid can be rotated with respect to a main body around a predetermined axis thereof to open and close, and in particular, the pivoting portion is provided with an appropriate rotational friction so that the opening and closing angle of the lid can be arbitrarily set. It relates to electronic application devices such as laptop personal computers and word processors that can be selected.

[Prior art]

A conventional example will be described with reference to FIGS. 3 and 4. FIG. 3 is an external perspective view of a conventional example shown in common with the embodiment according to the present invention, and FIG. 4 is an exploded perspective view of a main part of the conventional example. In FIG. 3, this conventional example is a laptop personal computer or word processor as an electronic application device. The lid 10 having a display screen inside can be opened and closed by rotating around the axis of the rotating portion P with respect to the main body 20. In this conventional example, roughly, the rotating portion P between the lid 10 and the main body 20 has an appropriate rotational friction, and the lid 10 is at an arbitrary angular position.
In other words, it is positioned steplessly. The structure of the rotating portion P is as shown in FIG. 4, and the mounting tool 41 is attached to the lid body 10 with a small screw.
The shaft 31 is fixed by 42, and the shaft 31 is inserted into the unmarked square hole of the fixture 41 so as not to rotate at its left end. On the right side of the shaft 31, there are an intermediate part 31a and a shaft part 31b.
The holder 32 and the cylindrical body 33 are inserted into the shaft 31a and the shaft 31b, respectively. The holder 32 cannot rotate with respect to the intermediate portion 31a, and the cylindrical body 33 can rotate with respect to the shaft portion 31b. On the other hand, the connector 51 is fixed to the main body 20 side, and the right end of the shaft 31b is loosely penetrated into the hole 51a on the right end surface of the connector 51.
Further, a torsion spring 34 is loosely inserted between the outer periphery 32b of the right end portion of the holder 32 and the outer periphery of the cylindrical body 33, and one end 34a of the torsion spring 34 is attached to the holder 3.
The second holding surface 32a is brought into contact with the second holding surface 32a, and the other end portion 34b is inserted into the small hole 51b on the right end surface of the connector 51 and positioned. A washer 35 and a snap ring 36 are provided at the right end of the shaft 31b.
The 31 is stopped so as not to come off from the fitting 41 and the coupling 51. Therefore, when the lid 10 is rotated, it receives rotational friction between the outer periphery 32b of the end portion of the holder 32 and the inner periphery of the left end of the torsion spring 34, which has two or three turns. Positioning at any angle is possible.

[Problems to be solved by the device]

As described above, in the conventional technique, the shaft 31 and the holder 3
2. Like the torsion spring 34, the component parts have complicated shapes and are required to have dimensional accuracy. In particular, the fitting dimensional relationship between the outer circumference 32b of the holder 32 and the inner circumference of the left end portion of the torsion spring 34 with two or three turns is very delicate because it is a factor that determines the degree of rotational friction. Moreover, the degree of rotational friction is difficult to be constant over time, and the sense of resistance received when opening and closing the lid 10 is changed, which is not sensationally good. Therefore, both are easily worn by friction. In an extreme case, there is a possibility that the friction will disappear and the positioning will not be performed. Further, the torsion spring 34 has about 120
Since a twist angle of 4 degrees is required, the number of windings increases and the axial dimension inevitably becomes long. The object of the present invention is to solve the above-mentioned problems of the conventional technology, and to provide an electronic application device in which the opening / closing angle of the lid can be arbitrarily selected by providing the rotating portion with appropriate rotational wear by a simple structure. To provide.

[Means for Solving the Problems]

In order to solve this problem, an electronic application apparatus according to the present invention is an apparatus in which a lid body is rotatable with respect to a main body around a predetermined axis line thereof and can be opened and closed, wherein the predetermined axis line serves as an axis line, A shaft body fixed to either one side of the main body; a connecting member provided on the other side of the lid body, and rotatable around the shaft body; the shaft of the rotating portion of the connecting member. A disc having an end face which is in contact with a surface perpendicular to the axis of the body on one side and which is movable only in the axial direction with respect to the shaft body; And a pair of spring washers that are movable only in the axial direction and are formed in a rotational convex shape, and the surfaces of the convex portions are pressed and brought into contact with each other to a predetermined extent by tightening with a screw; Between the end surface and the surface of the rotating portion of the connecting member that contacts the end surface. Impart a predetermined degree of rotation friction.

[Action]

The one end surface of the disc and the surface of the rotating portion of the connecting member that comes into contact therewith are pressed and brought into contact with each other by the biasing force of the pair of spring washers that press and contact the surfaces of the protrusions to a predetermined extent,
Rotational friction based on this occurs between both surfaces, and when the lid body is rotated with respect to the main body to open and close, it can be stopped at any position by the rotational friction, in other words, steplessly stopped. Moreover, since the disc and the spring washer do not rotate with respect to the shaft body, the frictional state is stable.

【Example】

An embodiment according to the present invention will be described below with reference to the drawings. As shown in the external perspective view of FIG. 3, this embodiment is the same in appearance as the conventional example except that the configuration of the rotating portion P is different. FIG. 1 is an exploded perspective view of the rotating portion P of this embodiment, and FIG. 2 is a sectional view of the same. In FIG. 1, a receiver 11 is fastened to a lid 10 with a machine screw 12 via an unillustrated spacing shaft (see FIG. 2). The shaft 1 has shaft ends 1a, 1b on both sides of the middle part, which have a smaller diameter than the middle part and are chamfered facing each other on the left and right. The shaft end portion 1a is inserted into a square hole of the receiving member 11 which is not labeled, and the shaft end portion 1b has a bearing portion 22b of the connecting member 22, and a disc 2 and a spring washer 3 each sandwiching the bearing portion 22b. Each of them is inserted as described later in detail, and this is the shaft end.
By screwing machine screw 5 into the right end face of 1b, washer 4
It is pressed to the left via. The connector 22 is a plate-shaped member that is bent into an L shape, and has one side serving as a mounting portion 22a and the other side serving as a bearing portion 22b. Mounting part 22
a is the four spacing axes 2 on the surface of which the two-dot chain line is displayed.
It is attached to the main body 20 via 1 (see FIG. 2). In the bearing portion 22b, the unmarked hole is the shaft end portion 1b of the shaft 1.
It is rotatably fitted to both sides and is sandwiched on both sides by the shoulder surface of the shaft end 1b and the left side surface of the left disk 2. The spring washers 3 are formed in a rotating convex shape, and are arranged in a pair with the surfaces of the convex portions facing each other. The pair of spring washers 3 are sandwiched by the discs 2 from the left and right. Both the disc 2 and the spring washer 3 have a square hole in the center, and the shaft end 1b
Only axial movement is possible. As described above, by fixing the washer 4 to the end face of the shaft end 1b, the spring washer 3 is slightly compressed, and when the bearing 22b is rotated around the shaft 1, the spring washer 3 Rotational friction depending on the compressive force acts on both sides of the bearing portion 22b. That is, this rotational friction is a resistance received when the lid 10 is rotated with respect to the main body 20, or a holding torque of the lid 10 with respect to the main body 20. Moreover, the disc 2 and the spring washer 3 are connected to the shaft end 1b.
The friction state is stable because it does not rotate with respect to. In this embodiment, the shaft 1 is fixed to the lid 10 side and the connector 22 is fixed to the main body 20 side.
May be fixed to the main body 10 side, and the connector 22 may be fixed to the lid body 10 side. Further, in this embodiment, the spring washers 3 are used as a pair, but in general, more than one pair can be arranged. Although the dimension in the axial direction is increased, the displacement of one spring washer 3 is small and the generated stress is suppressed as the number of logarithms is increased. Furthermore, even if the square hole at the center of the spring washer 3 is a round hole, the spring washer 3 does not actually rotate around the shaft end 1b. Therefore, by using a round hole instead of a square hole, the same operational effect can be obtained, and the manufacturing becomes easier and the cost can be reduced.

[Effect of the Invention] Therefore, according to this invention, the following excellent effects are obtained as compared with the conventional technology. (1) Since the friction is based on the biasing force of the spring washer, the structure is simple and the shapes of the related components are simple.
Therefore, it is easy to manufacture and the cost can be reduced. (2) The axial dimension of the rotating part with friction is small,
Since it does not take up that much space, the device can be made smaller. (3) Since the urging force of the spring washer is stable over time, the friction torque of the rotating portion is stable for a long period of time, the opening / closing operation of the lid body matches the purpose of use, and it is sensuously comfortable. is there.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of an embodiment according to the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is an external perspective view of this embodiment, and FIG. 4 is an exploded view of an essential part of a conventional example. A perspective view and FIG. 5 are sectional views of the same. Code Description 1: Shaft, 1a, 1b: Shaft end, 2: Disc, 3: Spring washer, 4: Washer, 1
0: Lid, 11: Receiver, 20: Main body, 22: Connecting tool, 22a: Mounting part, 2
2b: Bearing part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-22098 (JP, A) JP-A-1-59992 (JP, A) JP-A-2-136369 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A device in which a lid can be opened and closed with respect to a main body by rotating about a predetermined axis thereof, and a shaft fixed to either one of the lid and the main body with the predetermined axis as an axis. A connecting member that is provided on the other side of the lid body and rotatable around the shaft; and an end face of the rotating portion of the connecting member that is in contact with a surface perpendicular to the axis of the shaft. A disk that has only a movement in the axial direction with respect to the shaft, and that is provided on the other end surface side of the disk and that can move only in the axial direction with respect to the shaft and has a rotational convex shape And a pair of spring washers whose convex surfaces are pressed and brought into contact with each other to a predetermined extent by tightening with a screw; and one end surface of the disc and the rotating portion of the connecting member that comes into contact therewith. To have a certain degree of rotational friction with the surface of Electronic application device according to claim.