JPH11186746A - Switchgear, and electronic apparatus equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-size switchgear and an electronic apparatus equipped with the switchgear. SOLUTION: This switchgear is equipped with an operating part 101 which is attached to a main body, capably of shifting in both directions of a straight line so as to open and close the cover 3 mounted on a main body 2, a hook part 102 which is attached to the operating part, so that it is able to shift with the said operation part and can rotate singly and is able to hook in the lock 30 provided in the cover, and an elastic member 104 whose one end is locked in the operation part and whose other end hooks in the body and which biases the operation part and the locked part in one direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device for opening and closing a main body and a lid, and an electronic apparatus provided with the opening / closing device.

[0002]

2. Description of the Related Art Information recorded on a disc-shaped information recording medium can be reproduced while being carried by a reproducing device, for example, a portable electronic device, to enjoy music and other information. For example, a compact disc (CD) reproducing apparatus is called a portable CD player or the like, and has a main body (also called a cabinet) 200 and a lid 201 as shown in FIGS.

The lid 201 comprises an opening / closing device 210 and an opening device 2
20, the main body 200 can be opened and closed.
Is opened from the main body 200, a compact disk (hereinafter, referred to as a disk) D can be attached to and detached from the main body 200. That is, by operating the slide operation unit 211 constituting the opening / closing device 210 in the direction of arrow a shown in FIG.
The cover 201 can be opened from the main body 200 in the direction of the arrow b shown in FIG. 20 via the hinge 222 by the restoring force of the torsion coil spring 221 constituting the opening device 220 by releasing the locked state with the cover 01a. In this example, the operation buttons 203 and the like are arranged at the position of the lid 201.
There is also a type in which such operation buttons are arranged on the 00 side.

FIG. 21 shows the internal structure of the player, and FIG. 22 shows a JJ section thereof. A drive unit 204 for continuously rotating the disk D and two batteries 20 for supplying power to the drive unit 204 and reproducing information on the disk D are included in the main body 200.
5,205 are built-in. Two batteries 205, 20
5 are arranged in parallel at the lower part of the disk D, electrically connected in series, and held by a holding plate 206.

FIG. 23 is a plan view showing a detailed example of the opening / closing device 210, and shows a state in which the back cover 200a of the main body 200 is opened. The opening and closing device 210 includes a slide operation unit 211.
And a torsion coil spring 212. The slide operation unit 211 has a configuration in which a substantially U-shaped mounting member 211b and a substantially rectangular locking member 211c are integrally formed on one surface side of a substantially rectangular slide plate 211a.

The slide plate 211a is an operation means for the user to operate when opening the lid 201.
It is configured to be movable in the direction of arrow a shown in the figure along the outer surface of the 0 side wall 200b. The mounting member 211b is a member for keeping the slide plate 211a in contact with the outer surface of the side wall 200b of the main body 200. One end is integrated with the slide plate 211a as a fixed end, and the other end is a free end. The main body 200 is configured to be hooked on the inner surface of the side wall 200b. The locking member 211c is a member for locking the torsion coil spring 212 and the lid 201, and one end 212b of the torsion coil spring 212 is locked to the first locking portion 211ca, and to the second locking portion 211cb. The stopper 201a of the lid 201 protruding from the opening 200c provided inside the main body 200 is configured to be locked.

[0007] The slide operation unit 211 having such a configuration.
The slide plate 211a is disposed outside the side wall 200b of the main body 200, and the mounting member 211b and the locking member 211c
The mounting member 211b and the locking member 211c are attached to the main body 20 such that the
The main body 200 is inserted into the opening provided in the side wall 200b from the outside and attached to the side wall 200b of the main body 200. That is,
The slide operation unit 211 is configured such that the mounting member 211b is
The main body 200 is attached so as not to fall out of the opening provided in the side wall 200b by being hooked on the inner surface of the side wall 200b.
1a is movable within the opening in the direction of arrow a shown in FIG. 23 with the outer surface of the side wall 200b of the main body 200.

[0008] The torsion coil spring 212 includes a spring portion 212a.
Is inserted into a pin 200 d provided inside the main body 200, one end portion 212 b is locked to the first locking portion 211 ca of the locking member 211 c of the slide operation portion 211, and the other end portion 212 c is inside the main body 200. Pin 2 provided on
00e, and the slide operation unit 211 is
Biased in the direction.

An operation example of such a configuration will be described. When the lid 201 is closed, FIG.
As shown in the figure, the slide operation portion 211 is urged in the direction of arrow c by the torsion coil spring 212, and the stopper 201a protruding from the opening 200c is locked by the second locking portion 211cb so that the lid is closed. The opening of 201 is regulated. From this state, as shown in FIG. 7B, when the slide operation unit 211 is moved in the direction of the arrow a in the figure, the torsion coil spring 212 is elastically deformed in the direction of the arrow d in the figure, and the second locking unit 211cb Moves away from the stop 201a,
The lid 201 is opened. Then, the slide operation unit 211
Automatically returns to the original state by the restoring force of the torsion coil spring 212. When the lid 201 is closed, the stopper 201a once pushes out the second locking portion 211cb in the direction of arrow a in the drawing, and immediately thereafter locks the second locking portion 211cb by the restoring force of the torsion coil spring 212. Lid 20
1 is regulated, and the state returns to the state shown in FIG.

[0010]

In the above-described conventional opening / closing device 210, the second locking portion 211cb for locking the stop portion 201a of the lid 201 is provided in the radial direction of the main body 200 with respect to the slide plate 211a. Are located. For this reason, the opening 200 c is provided for the disk D mounted in the main body 200.
And the outer periphery of the main body 200 and the disk D
Therefore, there is a problem that the outer shape of the player is increased by this amount.
In addition, since the slide plate 211a moves when the lid 201 is closed, there is a possibility that the slide plate 211a may be mistaken for a malfunction.

The present invention has been made in view of the above circumstances, and has as its object to provide a small opening / closing device and an electronic apparatus provided with the opening / closing device.

[0012]

According to the present invention, there is provided an opening / closing device for opening / closing a lid mounted on a main body, wherein the opening / closing device is attached to the main body so as to be movable in both linear directions. An operating portion, and a locking portion attached to the operating portion so as to be movable with the operating portion and rotatable independently, and to be lockable on a stopper provided on the lid. And an elastic member having one end locked to the operation unit and the other end locked to the main body, and urging the operation unit and the locking unit in one direction. When opening, the operating portion is moved in the other direction, thereby moving and rotating the locking portion to release the locked state between the locking portion and the stopping portion, and thereafter, the elastic member The operating part and the locking part are automatically returned by the restoring force, and the lid is closed. At this time, the locking portion is rotated by pressing the locking portion against the locking portion, and then the locking portion is automatically returned by the restoring force of the elastic member, so that the locking portion and the locking portion are returned. This is achieved by setting the lock state and the lock state.

[0013] Further, according to the present invention, the object is provided with a main body, and a lid openably and closably mounted on the main body, for rotating a disk-shaped information recording medium mounted in the main body. In an electronic device that reproduces or records information, an operation unit attached to the main body so as to be movable in both linear directions, so that the operation unit can move together with the operation unit and can rotate independently, and A locking portion attached to the operation portion so as to be lockable to a stopper provided on the lid, one end portion is locked to the operation portion, and the other end portion is locked to the main body. An opening / closing device having an elastic member that urges the operating portion and the locking portion in one direction, and when the lid is opened, the operating portion is moved in the other direction so that the locking is performed. Move and rotate the part to move The locking state with the stopper is released, and then the operating portion and the locking portion are automatically returned by the restoring force of the elastic member, and when closing the lid, the stopper is pressed against the locking portion. Accordingly, the locking portion is rotated, and thereafter, the locking portion is automatically returned by the restoring force of the elastic member to bring the locking portion and the stop portion into a locked state.

According to the above construction, the locking portion for locking the locking portion of the lid, which was conventionally formed integrally with the operating portion, is provided separately, so that the opening is formed with the diameter of the main body. It is not necessary to dispose in the direction, and it can be provided in the vicinity of the outer periphery of the main body, and can be made compact.

[0015]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the embodiments described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description in the following description. It is not limited to these forms unless otherwise stated.

FIGS. 1 to 4 are perspective views showing an embodiment of an electronic apparatus provided with the opening / closing device of the present invention. FIGS. 5 to 8 are perspective plan views and perspective side views seen from three directions. It is. The electronic apparatus 1 is an example of a so-called portable disk player which is portable and can reproduce a disk-shaped information recording medium. The electronic apparatus 1 includes a main body (also called a cabinet) 2 and a lid (also called an upper lid) 3. Have.

The main body 2 includes a chucking section 4, an optical pickup 5, and the like. The chucking section 4 can detachably hold a disc-shaped information recording medium (hereinafter, referred to as a disc) D. The optical pickup 5 slides in the radial direction of the disk D by the operation of the motor. On the side surface of the main body 2, a power switch 6, a hole 7 for an earphone jack, a connection hole 8 for a converter for connecting to a commercial AC power supply, and the like are formed.

At the rear of the main body 2, a battery housing means 20 is provided. The battery accommodating means 20 can accommodate, for example, two AA primary batteries or secondary batteries B, B in a serial arrangement and electrically connected in series. The arrangement direction S of the plurality of batteries B in the battery storage means 20
Preferably coincides with or substantially coincides with the rotation center axis CL of the lid 3. On the cover 3, a display unit 60 for displaying various information and various button operation units 62 are provided. The display unit 60 can employ, for example, a liquid crystal display panel, and can display various data related to reproduction information of the disk D.

The lid 3 can be opened and closed with respect to the main body 2 by an opening / closing device 100 provided at a front portion of the main body 2 and an opening device 110 provided at a rear portion of the main body 2. Thus, the disk D can be attached to and detached from the main body 2. That is, by operating the slide operation unit 101 constituting the opening / closing device 100 in the direction of arrow P shown in FIG. 1, the locked state with the stopper 30 provided on the lid 3 is released, and the opening device 110 is configured. Cover 3 via the hinge 112 with the restoring force of the torsion coil spring 111
Can be opened from the main body 2 in the direction of arrow R shown in FIG. The outer surface 2c of the main body 2 has an arc shape, and the rear end 3a of the lid 3 is also curved. And
The rotation center axis CL of the lid 3 substantially matches the arrangement direction S of the batteries B, B housed in the battery housing means 20. Thus, when the lid 3 is opened in the direction of the arrow R, the rear end 3a moves smoothly along the outer surface 2c.

The main body 2 and the lid 3 can be made of metal or plastic. Metals that can be used include
For example, aluminum and magnesium alloys can be used. When plastics are used, engineering plastics (for example, carbon fiber reinforced nylon, glass fiber reinforced ABS, etc.) and general-purpose plastics (ABS, polycarbonate, etc.) can be used. In any case, the use of metal or engineering plastic can further reduce the thickness of the electronic device as compared to using general-purpose plastic.

The disk D detachably mounted on the main body 2 is, for example, a CD as an example of the optical disk. The diameter of the disk D is, for example, 12 cm, and the disk D has a three-layer structure of a protective layer, an aluminum reflective layer, and a plastic substrate. Fine pits are formed in the plastic substrate, and an aluminum reflective layer is disposed in the pit portion, and the aluminum reflective layer is protected by a protective layer. The pits record information such as digitized music. That is, information such as music is divided in time series, and the strength of each is “0”,
The signal is converted into a binary signal (digital signal) of “1” and recorded. The pits of the disk D are arranged in a size corresponding to the content of the signal. The pit is irradiated with a laser beam from the optical pickup 5 to the aluminum reflective layer side, which is the signal recording surface of the disk D, through a transparent plastic substrate, and the return light is received to be converted into an electric signal and sound. Can be changed to

FIG. 9 is a sectional view taken along the line FF in FIG. 5, and shows an example of the internal structure of the electronic device 1. In the main body 2, a driving means 40 for continuously rotating the disk D,
Chucking section 4, two batteries B, B, circuit board 4
2 are stored. The lid 3 protects the driving means 40, the chucking unit 4, the optical pickup 5, and the disk D. The driving means 40 is fixed to the main body 2 by a fixing part (not shown). The chucking unit 4 can continuously rotate the disk D by a motor MT built in the driving unit 40. The optical pickup 5 can be accommodated in the driving means 40. That is, the driving unit 40 continuously rotates the disk D while
Has the function of optically reading the information. The two batteries B supply power to the motor MT of the driving means 40 and the optical pickup 5. The board 42 is arranged in a housing space in the main body 2, and is arranged in parallel with the bottom surface 2 a of the main body 2 in a portion between the driving means 40 and the battery housing means 20.

The battery housing means 20 has an end portion 2b of the bottom surface 2a of the main body 2, an approximately circular outer surface portion 2c, a horizontal plate 2d, and the like. The horizontal plate 2d also has a function of shielding between the disk D and the substrate 42. The two batteries B, B
The outer surface 2c and the end 2b of the bottom surface 2a can be held so as not to come off. As shown in FIG. 10, the battery housing means 20 includes an opening / closing lid 70 on the bottom surface 2 f side of the main body 2.
The opening / closing lid 70 can be opened in the G direction about the central axis 72. Then, as shown in FIG. 11, two batteries B, B can be housed in series inside the battery housing means 20. One positive terminal 80 of one battery B can be electrically and positively pressed against the first contact portion 90 by using an elastic force to make contact therewith.
On the other hand, the second contact portion 95 is a coil spring or a helical spring, and is electrically and positively pressed against the negative pole (the other end) 81 of the other battery B by using an elastic force. Have been.

FIG. 12 is a perspective view showing a detailed example of the opening / closing device 100, and FIG. 13 is an exploded perspective view thereof, showing a state where the bottom surface 2a of the main body 2 is opened. The opening / closing device 100 includes a slide operation unit (operation unit) 101, a locking unit 102, a fixing unit 103, and a torsion coil spring (elastic member) 104. As shown in the three views of FIG. 14, the slide operation unit 101 has a substantially U-shaped mounting member 101b and a substantially rectangular locking member 101c integrally formed on one surface of a substantially rectangular slide plate 101a. It has a molded configuration.

The slide plate 101a is an operation means for the user to operate when opening the lid 3, and is configured to be movable along the outer surface of the side wall 21 of the main body 2 in the directions of arrows P and Q shown in FIG. Have been. The mounting member 101 b is a member for keeping the slide plate 101 a in contact with the outer surface of the side wall 21 of the main body 2, and has one end as a fixed end.
01a, and the other end is configured to be hooked to the inner surface of the side wall 21 of the main body 2 as a free end. The locking member 101c is a member for locking the locking portion 102 and the torsion coil spring 104. One end of the locking portion 102 is rotatably locked to the first locking portion 101ca, and the second locking One end 104b of the torsion coil spring 104 is locked to the portion 101cb.

The slide operation unit 101 having such a configuration
The slide plate 101a is disposed outside the side wall 21 of the main body 2, and the mounting member 101b and the locking member 101c are
The mounting member 101 is disposed inside the side wall 21 of the mounting member 101.
b and the locking member 101c are inserted from the outside into the opening 22 provided in the side wall 21 of the main body 2, whereby the main body 2
Is mounted on the side wall 21 of the main body. That is, the slide operation unit 101
Is mounted so that the other end of the mounting member 101b is caught on the inner surface of the side wall 21 of the main body 2 so that the mounting member 101b does not fall out of the opening 22.
a is movable in the opening 22 in the directions of arrows P and Q shown in FIG. 12 and the outer surface of the side wall 21 of the main body 2.

As shown in three views of FIG. 15, the locking portion 102 is formed in a substantially rectangular plate shape, a projection 102a is provided on the lower surface at one end, and is formed on the upper surface at the other end. Is provided with a projection 102b, and a locking member 10 is provided on the side surface on the other end side.
2c are provided, and two through holes 102d, 1
02e is provided. Protrusion 102a
Is a member for locking with the slide operation unit 101, and is configured to be rotatable by being inserted into the second locking unit 101cb. The protrusion 102b is a member for pressing the torsion coil spring 104, and is configured to be able to protrude from a through hole 103c of the fixing portion 103 described later.

The locking member 102c is a member for locking the lid 3, and is configured so that a stopper 30 of the lid 3 protruding from an opening 23 provided inside the main body 2 can be locked. I have. The through holes 102d and 102e are
The pin 2 is formed in a substantially triangular shape and is provided inside the main body 2.
4 and 25 are inserted. Note that only one of these through holes 102d and 102e may be formed.

The locking portion 102 having such a structure is provided with the projection 1
02a is the second locking portion 101cb of the slide operation portion 101
Into the through holes 102d and 102e.
25 is inserted inside the main body 2 by insertion, and the through-holes 102d, 1
The pin 24 rotates within a range in which the pins 24 and 25 come into contact with the side surface of 02e.

As shown in three views of FIG. 16, the fixing portion 103 is formed in a substantially rectangular plate shape having a cavity 103a on the lower surface, and a projection 103b is provided on one side surface, and one end side is provided. The through hole 103c and the locking member 1
03d is provided, and a through hole 103e is provided on the other side surface. The gap 103a is configured so that the locking portion 102 can rotate inside the gap 103a. The protrusion 103 b is a member for fixing the fixing portion 103 inside the main body 2, and is configured to be fitted into an opening 26 provided in the side wall 21 of the main body 2. Through hole 103c
Is a hole formed to protrude the protrusion 102b of the locking portion 102, and the protrusion 102b
Is formed in a substantially triangular shape so as to be movable when pressing the other end portion 104c.

The locking member 103d includes the torsion coil spring 10
4 is formed at one end of the through hole 103c, and is connected to the other end 104c of the torsion coil spring 104.
Are configured to be lockable. The through-hole 103e is a member for fixing the fixing portion 103 inside the main body 2,
It is configured to be able to fit into a pin 27 provided inside the main body 2. In the fixing portion 103 having such a configuration, the locking portion 102 is located in the gap portion 103a and the through hole 10
The protrusion 103b is fitted into the opening 26 such that the protrusion 102b of the locking portion 102 protrudes from the opening 3c, and the pin 27 is inserted into the through hole 103e so that the protrusion 103b is positioned and fixed inside the main body 2. It has become.

The torsion coil spring 104 includes a spring portion 104a
Is inserted into a pin 28 provided inside the main body 2,
One end portion 104b is the locking member 10 of the slide operation portion 101.
1c is locked by the second locking portion 101cb, and the other end 104
c is locked by the locking member 103d of the fixing portion 103, and urges the slide operation portion 101 in the direction of arrow Q shown in FIG. Since the fixing portion 103 is a component that only maintains the locking state of the locking portion 102 and the torsion coil spring 104, the locking portion 102 is securely locked to the slide operation portion 101, for example. If the torsion coil spring 104 is securely locked to the main body 2, it is not necessary to provide the torsion coil spring 104.

An operation example of such a configuration will be described with reference to FIGS. When the lid 3 is closed, as shown in FIG. 17A, the slide operation unit 101 is urged in the direction of the arrow a in FIG. Hole 10
One end corners of 2d and 102e are positioned by being pressed against pins 24 and 25, and stop portion 30 of lid 3 projecting from opening 23 is locked by locking member 102c to restrict the opening of lid 3. ing.

From this state, as shown in FIG.
The slide operation unit 101 is shown together with the locking unit 102 by an arrow P shown in the drawing.
In one direction, one end 1 of the torsion coil spring 104
04b is elastically deformed in the direction of arrow b in the figure, and the side surfaces from the one end corners to the other end corners of the through holes 102d, 102e of the locking portion 102 slide in contact with the pins 24, 25. Is rotated in the direction indicated by arrow c. As a result, the locking member 102c of the locking portion 102 is
0, the lid 3 is opened, and the other end 104c of the torsion coil spring 104 is
And is elastically deformed in the direction of arrow d shown in the figure. afterwards,
The slide operation unit 101 is driven by the restoring force of one end 104b of the torsion coil spring 104, and the locking unit 102 is driven by the restoring force of the other end 104c of the torsion coil spring 104 in FIG.
8 (A) is automatically returned to the original state.

When the lid 3 is closed, as shown in FIG.
Is once pushed out in the direction of arrow e in the drawing, and at this time, the through holes 102d and 102e of the
The side from one corner of the other to another corner of the other pin 24,2
5, the locking portion 102 is rotated in the direction indicated by arrow c, and the one end portion 104b of the torsion coil spring 104 is elastically deformed in the direction indicated by arrow d. Immediately thereafter, the locking portion 102 is connected to one end portion 104 b of the torsion coil spring 104.
17A automatically returns to the original state of FIG. 17A due to the restoring force of the locking member 102.
2c, the opening of the lid 3 is regulated.

According to the opening / closing device 100 having the above structure, the locking member 102c of the locking portion 102 is
, The stopper 30 of the lid 3 can be arranged in one direction Q side that is the moving direction of the locking part 102, that is, in the circumferential direction with respect to the slide operation part 101.
For this reason, the opening 23 can be provided at a position close to the outer periphery of the main body 2, and the outer shape of the player can be made smaller than before. When the lid 3 is closed, only the locking portion 102 moves, and the slide operation portion 101 does not move, so that it is possible to eliminate a mistaken operation.

In the above-described embodiment, a compact disk is described as the disk D. However, the present invention is not limited to this, and a high-density recording medium, for example, a bonded high-density recording medium, such as a digital versatile disk, is also used. It is also applicable to a disk for high-density recording, also called a video disk, or an electronic device that reproduces information from an information recording medium such as a magneto-optical disk or a hard disk, and records information on these information recording media. Things.

[0038]

As described above, according to the present invention, since the apparatus can be made compact, the size of the applied device can be reduced.

[Brief description of the drawings]

FIG. 1 is a first perspective view showing an embodiment of an electronic apparatus provided with an opening / closing device of the present invention.

FIG. 2 is a second perspective view showing an embodiment of an electronic apparatus provided with the opening / closing device of the present invention.

FIG. 3 is a first perspective view showing a state where a lid of the electronic apparatus of FIG. 1 is opened.

FIG. 4 is a second perspective view showing a state in which a cover of the electronic apparatus of FIG. 1 is opened.

FIG. 5 is an exemplary plan view showing the internal structure of the electronic device of FIG. 1, the arrangement of batteries, and the like;

FIG. 6 is an exemplary front view of the electronic device in FIG. 1;

FIG. 7 is an exemplary rear view of the electronic apparatus shown in FIG. 1;

8 is a side view of the electronic device of FIG.

FIG. 9 is a sectional view taken along line FF in FIG. 5;

FIG. 10 is an exemplary perspective view of the back side of the main body of the electronic apparatus of FIG. 1;

FIG. 11 is an exemplary perspective view showing a state in which a cover of a battery storage unit of the electronic apparatus of FIG. 1 is opened;

FIG. 12 is an exemplary perspective view showing a detailed example of the opening / closing device for the electronic apparatus in FIG. 1;

FIG. 13 is an exploded perspective view of the opening / closing device of FIG.

FIG. 14 is a first diagram illustrating components of the switchgear of FIG. 12;
Area view.

FIG. 15 is a view showing a second third embodiment of the switchgear of FIG. 12;
Area view.

FIG. 16 shows a third part showing components of the switchgear of FIG. 12;
Area view.

FIG. 17 is a first plan view showing an operation example of the switchgear of FIG. 12;

FIG. 18 is a second plan view showing an operation example of the opening / closing device of FIG. 12;

FIG. 19 is a perspective view showing an example of an electronic apparatus provided with a conventional opening / closing device.

FIG. 20 is an exemplary perspective view showing a state where a lid of the electronic apparatus of FIG. 19 is opened;

FIG. 21 is an exemplary plan view showing the internal structure of the electronic device in FIG. 19, the arrangement of batteries, and the like;

FIG. 22 is a sectional view taken along line JJ in FIG. 21;

23 is a plan view showing a detailed example and an operation example of the opening / closing device for the electronic device in FIG. 19;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic device, 100 ... Opening / closing device, 101 ...
・ Slide operation part, 102 ・ ・ ・ Locking part, 103 ・ ・ ・
Fixed part, 104: torsion coil spring

Claims (8)

[Claims] 1. An opening / closing device for opening and closing a lid mounted on a main body, comprising: an operation section mounted on the main body so as to be movable in both directions of a straight line; A locking portion attached to the operation portion so as to be rotatable with the locking portion provided on the lid, and one end portion is locked to the operation portion; And an elastic member for urging the operating portion and the engaging portion in one direction, wherein the operating portion is moved in the other direction when the lid is opened. By moving and rotating the locking portion, the locking state between the locking portion and the stopping portion is released, and then the operating portion and the locking portion are automatically returned by the restoring force of the elastic member, When closing the lid, press the stop against the lock. Opening the locking portion by rotating the locking portion, and then automatically returning the locking portion by the restoring force of the elastic member to bring the locking portion and the stop portion into a locked state. apparatus. 2. The opening and closing device according to claim 1, wherein the operation unit is attached to an outer side surface of the main body. 3. The opening and closing device according to claim 1, wherein the locking portion and the elastic member are arranged inside the main body. 4. The opening / closing device according to claim 1, wherein the stopper is provided on the lid so as to be located in one direction, which is a moving direction of the stopper. 5. An electronic apparatus, comprising: a main body; and a lid openably and closably mounted on the main body, wherein information is reproduced or recorded by rotating a disk-shaped information recording medium mounted in the main body. An operation unit attached to the main body so as to be movable in both directions of a straight line; and an operation unit movable together with the operation unit and independently rotatable, and locked to a stopper provided on the lid. A locking portion attached to the operation portion so that the operation portion and the locking portion can be connected to each other, and one end portion is locked to the operation portion and the other end portion is locked to the main body. An opening / closing device having an elastic member biasing in the direction, when the lid is opened, the operating portion is moved in the other direction, so that the locking portion is moved and rotated, and the locking portion is moved. Release the locked state between the The operating portion and the locking portion are automatically returned later by the restoring force of the elastic member, and when closing the lid, the locking portion is rotated by pressing the stopper against the locking portion, and thereafter, An electronic device, wherein the locking portion is automatically returned by a restoring force of the elastic member, and the locking portion and the stopping portion are locked. 6. The electronic device according to claim 5, wherein the operation unit is attached to an outer side surface of the main body. 7. The electronic device according to claim 5, wherein the locking portion and the elastic member are arranged inside the main body. 8. The electronic device according to claim 5, wherein the stopper is provided on the lid so as to be located in one direction, which is a moving direction of the locking part.