JP6318551B2 - Open / close detection device for open / close member and electronic device - Google Patents

Description

  The present invention relates to an open / close detection device for an open / close member that opens and closes around at least two hinge axes, and an electronic device including the open / close member and the open / close detection device.

For example, Patent Document 1 discloses a biaxial hinge for providing a liquid crystal monitor that can be opened and closed and rotated with respect to a main body in a video camera. The biaxial hinge has a configuration in which an opening / closing axis and a rotation axis are orthogonally arranged.
With the biaxial hinge having the above configuration, the liquid crystal monitor opens and closes around the opening / closing axis with respect to the main body, and in the open state, can rotate around the rotation axis orthogonal to the opening / closing axis.
An opening / closing detection switch is provided at a position where the liquid crystal monitor of the main body abuts, and a rotation detection switch is provided near the rotation axis.

In addition, in a digital camera, Patent Document 2 discloses four arms for providing a liquid crystal monitor that can be opened and closed vertically and horizontally with respect to the main body. The four arms have a shaft portion, a first movable joint portion and a second movable joint portion at both ends of the shaft portion, and the first movable joint portion is rotatable with respect to one of the main body and the liquid crystal monitor. Each of the second movable joints is attached to the other of the main body or the liquid crystal monitor so as to be rotatable.
With the four arms configured as described above, the liquid crystal monitor opens and closes along the upper, lower, left and right sides of the main body.

  Further, in a switch assembly of a vehicle power seat, Patent Document 3 discloses a pair of open detection switches provided on both left and right sides of a double opening lid of the switch unit. Each of the pair of left and right open detection switches detects the open direction of either the left or right of the double lid.

  Further, Patent Document 4 discloses a pair of open / close detection switches provided on both left and right sides of a double door of a refrigerator. The left and right open / closed states of the double doors are respectively detected by the pair of left and right open / close detection switches.

JP 2003-51970 A JP 2013-88626 A JP-A-6-24259 Japanese Utility Model Publication No. 4-39690 JP 2012-200472 A

  By the way, for example, in a camera like Patent Document 2 equipped with a movable liquid crystal monitor with respect to the main body, in order to detect each opening / closing (rotation) operation of at least two directions of the liquid crystal monitor, Patent Documents 1, 3, As shown in FIG. 4, since at least two detection switches are required, securing the mounting area of the two detection switches and increasing the cost are issues.

  In addition, as in Patent Document 5, for example, there is a two-way detection switch that integrates a plurality of switch units and includes a slider and a lever that operate in two different directions as two operation units. The two-way detection switch has a problem of high cost.

  An object of the present invention is to detect each opening / closing operation of each opening / closing member that opens and closes around at least two hinge axes by a single detection switch, thereby reducing the number of parts, simplifying the structure, and reducing the cost. Is to do so.

In order to solve the above problems , the first aspect of the present invention is:
An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts ,
The open / close detection device for an open / close member , wherein the movable detector rotates about an axis orthogonal to at least one of the at least two hinge shafts .
In order to solve the above problems, the second aspect of the present invention provides:
An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts,
The open / close detection device for an open / close member, wherein the movable detector moves forward and backward along an axial direction parallel to at least one of the at least two hinge shafts.
In order to solve the above problems, the third aspect of the present invention provides:
An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts,
The movable detector abuts on the opening / closing member in the process of opening / closing the opening / closing member around one hinge axis, and the moving member is opened / closed in the process of opening / closing the other hinge shaft. An opening / closing detection device for an opening / closing member, characterized in that a recess or a projection is provided to which the detector does not contact.

  According to the present invention, since each opening / closing operation of each opening / closing member that opens and closes around at least two hinge axes can be detected by a single opening / closing detection switch provided on the main body, the number of parts is reduced and the structure is simplified. , And cost can be reduced.

1 is a perspective view of a camera, showing a configuration of an embodiment of an electronic apparatus to which the present invention is applied. It is a figure which shows the state which tilted up the display part of FIG. 1 on the main body. It is the perspective view which looked at the main body and display part of Drawing 2 from the back side. It is the figure seen from the display part side of FIG. FIG. 5 is a diagram showing a state in which the display unit of FIG. 4 is inclined downward by approximately 45 ° from the main body. It is the figure which looked at the thin-plate slide structure part of FIG. 3 from the side in the substantially horizontal state. It is an expansion perspective view of the principal part of FIG. FIG. 8 is a cross-sectional plan view of the open / close detection switch portion of FIG. 7. It is a single item top view of the opening / closing detection switch of FIG. It is a perspective view which shows the lower open state of the display part of FIG. It is a perspective view which shows the upper open state of the display part of FIG. FIG. 12 is a cross-sectional plan view of the open / close detection switch portion of FIGS. 10 and 11. FIG. 9 is a schematic side view illustrating a state in which the display unit is overlaid on the main body, showing Embodiment 2. It is the enlarged view (a) of the opening / closing detection switch part of FIG. 13, and its cross-sectional plan view (b). It is a figure which shows the time of the lower open | release operation of the display part of FIG. It is a figure which shows the time of the top open | release operation | movement of the display part of FIG. FIG. 9 is a schematic perspective view showing another example of arrangement of the open / close detection switch according to the first modification. It is the perspective view which showed the modification 2 and showed the example of orthogonal arrangement | positioning of a hinge axis | shaft. FIG. 10 is a perspective view showing another example of arrangement of the open / close detection switch according to a third modification.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
1 to 4 show a camera as a configuration of an embodiment of an electronic apparatus to which the present invention is applied. A liquid crystal monitor 2 as a display unit is provided on the back of a main body 1 as an opening / closing member via a sliding hinge mechanism 3. Provided. As shown in FIGS. 2 and 3, the slide type hinge mechanism 3 allows the liquid crystal monitor 2 to be in a tilt-up state in which the liquid crystal monitor 2 stands vertically on the main body 1, and the photographer can take a picture.

The slide type hinge mechanism 3 has a slide structure in which a slide plate 5 is slidably overlapped with a hinge plate 4 and combined.
The hinge plate 4 includes a first hinge shaft 4 a that is a pair of left and right sheet metal pivots at one end thereof, and the first hinge shaft 4 a is rotatably coupled to the upper back of the main body 1.

  In the illustrated example, a part of the first hinge shaft 4a made of sheet metal protrudes to the back side of the main body 1 in order to eliminate the need to form a relief notch on the upper surface of the main body 1 or the liquid crystal monitor 2 To stand vertically upward. Moreover, the reason why the width of the first hinge shaft 4a made of sheet metal is wide is to ensure the necessary strength.

  As shown in FIGS. 5 and 6, the slide plate 5 includes a second hinge shaft 5 a with a pair of left and right sheet metal rotation shafts at the other end, and the second hinge shaft 5 a is the liquid crystal monitor 2. It is rotatably coupled to one end of the back surface.

With this slide type hinge mechanism 3, the liquid crystal monitor 2 is placed on the back surface of the main body 1 as shown in FIGS. 1 and 4, and the slide plate on the back surface around the first hinge shaft 4a as shown in FIGS. 5 is tilted up by approximately 180 ° and vertically upright on the main body 1, a state in which the screen is arranged downward from the back of the main body 1 as shown in FIG. 5, and an upper back of the main body 1 as shown in FIG. 6. The screen is placed upward.
In this way, since the screen is arranged in a desired position, it is possible to easily perform self-taking and high-angle / low-angle photography in addition to normal photography.

  7 is an enlarged perspective view of the main part of FIG. 4, and FIG. 8 is a cross-sectional plan view of the open / close detection switch portion. In the figure, 6 is an open / close detection switch, 7 is a pusher, and 8 is a rotating shaft.

  That is, as shown in FIG. 4, FIG. 7 and FIG. 8, the opening / closing detection is performed at a substantially central position between the parallel first hinge shaft 4a and second hinge shaft 5a at the position where the liquid crystal monitor 2 on the back of the main body 1 contacts. A switch 6 and a pusher 7 using a rotary lever for turning the open / close detection switch 6 on and off are arranged.

As shown in FIG. 9 in an enlarged manner, the open / close detection switch 6 performs a single movable detector 6a for each open / close operation around the first hinge shaft 4a and the second hinge shaft 5a of the liquid crystal monitor 2 with respect to the back surface of the main body 1. Are detected respectively.
The movable detector 6a rotates about an axis orthogonal to the first hinge shaft 4a and the second hinge shaft 5a, as indicated by arrows in FIG.

As shown in FIG. 8, the pusher 7 is a lever-like member that rotates integrally with the rotary shaft 8, and is always urged counterclockwise by a spring (not shown).
One end 7 a of the pusher 7 can be brought into contact with the outer case of the liquid crystal monitor 2, and the other end 7 b can be brought into contact with the movable detector 6 a of the open / close detection switch 6.
The rotating shaft 8 is disposed orthogonally to the first hinge shaft 4a and the second hinge shaft 5a.

In FIG. 8, the pusher 7 is applied with a counterclockwise urging force by a spring around the rotation shaft 8, but one end portion 7 a of the pusher 7 comes into contact with the exterior case of the liquid crystal monitor 2. Stop.
At this time, since the other end portion 7b of the pusher 7 pushes the movable detector 6a of the open / close detection switch 6 deeper than the ON start position (to the detected side), the open / close detection signal is turned ON.

  Here, in the specification of the embodiment, when the open / close detection signal is ON, the camera power is OFF, and when the open / close detection signal is OFF, the camera power is ON, so that the liquid crystal monitor 2 is overlapped and closed on the back of the main body 1. Is an open / close detection signal ON (camera power supply OFF).

  Next, FIG. 10 shows a state in which the liquid crystal monitor 2 is rotated counterclockwise about the first hinge shaft 4a on the upper side with respect to the back surface of the main body 1 to open the lower side. In this state, an image is displayed on the liquid crystal monitor 2 when the camera power is turned on.

  FIG. 11 shows a state in which the liquid crystal monitor 2 is rotated clockwise around the second hinge shaft 5a on the lower side with respect to the back surface of the main body 1 to open the upper side. Even in this state, an image is displayed on the liquid crystal monitor 2 when the camera power is turned on.

  Next, FIG. 12 is a diagram for explaining the open / close detection switch 6 and the pusher 7 in the state of FIGS. 10 and 11.

Similar to FIG. 8 described above, as shown in FIG. 12, the pusher 7 is constantly subjected to a spring biasing force in the counterclockwise direction around the rotation shaft 8, but in the rotation state of the liquid crystal monitor 2 with respect to the initial state, Since the outer case of the liquid crystal monitor 2 is located farther away from the initial position of the one end 7a of the pusher 7, the one end 7a of the pusher 7 further rotates counterclockwise from the initial position, It stops at the illustrated position where it contacts the inside of the main body 1.
At this time, the other end 7b of the pusher 7 is located on the side away from the ON start position of the movable detector 6a of the open / close detection switch 6 (the side not detected).

  In this manner, in the process in which the pusher 7 rotates while interlocking with the rotation of the liquid crystal monitor 2, the movable detector 6a of the open / close detection switch 6 in contact with the other end 7b of the pusher 7 is "detected side". Passes through the “ON start position (detection start point)” and moves to the “not detected side”, so that the open / close detection signal is switched from ON to OFF in the process. Accordingly, the camera power supply is switched from OFF to ON.

In addition to the camera power ON / OFF specification based on the opening / closing detection of the liquid crystal monitor 2 having the above specifications, the present invention can be applied to all specifications detected in conjunction with the opening / closing operation of the liquid crystal monitor 2.
Further, ON / OFF of the open / close detection switch 6 may be reversed.

  As described above, the main body 1 is located at a position that can be interlocked with either the upper or lower opening / closing operation of the liquid crystal monitor 2 whose upper or lower opening / closing operation is performed on the first hinge shaft 4a and the second hinge shaft 5a. Since an opening / closing detection switch 6 and a rotary pusher 7 are provided to detect the opening / closing operation of the upper or lower part of the liquid crystal monitor 2 with a single opening / closing detection switch 6, the number of parts can be reduced. The structure can be simplified and the cost can be reduced.

  Alternatively, the pusher 7 may be omitted, and the movable detector 6a of the open / close detection switch 6 may be directly pressed by the liquid crystal monitor 2 (the open / close detection switch 6 is reversed and arranged close to the liquid crystal monitor 2). However, by providing the pusher 7 and optimizing the shape and length of the one end portion 7a and the other end portion 7b, the detection / non-detection is detected rather than the method of directly pressing the movable detector 6a of the open / close detection switch 6. The advantage is that the stroke increases and malfunctions are less likely to occur.

  As described above, according to the open / close detection device for the liquid crystal monitor 2 of the embodiment, the open / close operation of the liquid crystal monitor 2 that opens and closes around the first hinge shaft 4a and the second hinge shaft 5a that are arranged in parallel can be Since each can be detected by a single opening / closing detection switch 6 provided at a substantially central position between the first hinge shaft 4a and the second hinge shaft 5a, the number of parts can be reduced, the structure can be simplified, and the cost can be reduced.

(Embodiment 2)
FIG. 13 shows a state in which the liquid crystal monitor 2 is overlapped on the back surface of the main body 1 as the second embodiment. As in the first embodiment, 4a is a first hinge shaft and 5a is a second hinge shaft.

  In the second embodiment, an open / close detection switch 16 (not shown) is provided on the back side of the main body 1, and a recess 2 a is provided on the side surface of the liquid crystal monitor 2.

That is, on the back side of the main body 1, an open / close detection switch 16 is arranged at a substantially central position between the first hinge shaft 4a and the second hinge shaft 5a as shown in an enlarged manner in FIG.
In the open / close detection switch 16, the movable detector 16a moves forward and backward along an axial direction parallel to the hinge shafts 4a and 5a, and only the movable detector 16a is illustrated.

Then, on the side surface of the liquid crystal monitor 2, a mortar-shaped recess 2a is formed at a substantially central position between the first hinge shaft 4a and the second hinge shaft 5a as shown in an enlarged manner in FIG.
As shown in FIG. 15, the movable detector 16a abuts on the mortar-shaped recess 2a in the process of opening and closing the liquid crystal monitor 2 around the first hinge shaft 4a. Thus, in the process in which the liquid crystal monitor 2 opens and closes around the second hinge shaft 5a, the movable detector 16a does not come into contact with each other, so that the forward / backward movement does not occur.

  Further, an inclined surface 2b is formed on the side surface of the liquid crystal monitor 2 that overlaps the back surface of the main body 1 and moves forward and backward when the movable detector 16a comes into contact with the recess 2a.

  Next, FIG. 15 shows the time when the lower part of the liquid crystal monitor 2 is opened. As shown in the figure, in the process of opening the lower part of the liquid crystal monitor 2 around the first hinge shaft 4a, the movable detector 16a is moved to the liquid crystal monitor. 2 from the ON state pressed against the side surface of 2 and moving forward along the mortar-shaped recess 2a to temporarily turn OFF, and then retreating along the mortar-shaped recess 2a to turn ON again. It moves forward along the following inclined surface 2b and becomes OFF state.

In this way, the detection signal of the open / close detection switch 16 is automatically switched from ON → OFF → ON → OFF based on the forward / backward movement of the movable detector 16a, thereby automatically recognizing that the lower part of the liquid crystal monitor 2 has been opened. can do.
When the liquid crystal monitor 2 is closed from the lower open state, the movable detector 16a is reversely operated by being guided by the inclined surface 2b and moving backward.

  FIG. 16 shows the upper opening operation of the liquid crystal monitor 2. As shown in the drawing, the movable detector 16a moves the liquid crystal monitor 2 in the process of opening the upper portion of the liquid crystal monitor 2 around the second hinge shaft 5a. Since it remains in the ON state pressed against the side surface of the mortar and does not contact the mortar-shaped recess 2a in the middle, it moves forward along the inclined surface 2b and becomes the OFF state.

As described above, the detection signal of the open / close detection switch 16 is switched from ON to OFF based on the forward / backward movement of the movable detector 16a, so that it is possible to automatically recognize that the upper portion of the liquid crystal monitor 2 has been opened. .
Even when the liquid crystal monitor 2 is closed from the upper open state, the movable detector 16a is reversely operated by the backward movement guided by the inclined surface 2b.

  As described above, by automatically recognizing the difference between the lower opening operation and the upper opening operation of the liquid crystal monitor 2, for example, when the lower portion of the liquid crystal monitor 2 is opened and the screen faces upward, there is an influence of the sun and illumination. Therefore, it can be used for automatic image adjustment such as brightness adjustment such as increasing the brightness of the screen.

  In addition, you may provide a convex part instead of a recessed part.

(Modification 1)
FIG. 17 shows another example of the arrangement of the open / close detection switch as the first modified example. As in the first embodiment, 1 is a main body, 2 is a liquid crystal monitor, 3 is a sliding hinge mechanism, 4 is a hinge plate, 4a. Is a first hinge shaft, and 5 is a slide plate.

  In the first modification, an open / close detection switch 26 (the whole image is not shown) is provided on the back surface of the main body 1.

That is, the open / close detection switch 26 is disposed at a substantially central position on the back surface of the main body 1.
The open / close detection switch 26 has a movable detector 26a that moves forward and backward along an axial direction orthogonal to the hinge shafts 4a and 5a. The movable detector 26a protrudes from a hole 1a formed in the back surface of the main body 1. Only is shown.
Then, holes 4b and 5b are formed at substantially the center positions of the hinge plate 4 and the slide plate 5, respectively.

  As described above, even if the open / close detection switch 26 is provided at the substantially central position on the back surface of the main body 1, the movable detector 26 a protruding from the hole 1 a on the back surface of the main body 1 is not connected to the first hinge shaft 4 a or the second hinge of the liquid crystal monitor 2. When rotating around the shaft 5a, the hinge plate 4 and the slide plate 5 are moved forward and backward through the holes 4b and 5b at substantially the center position in conjunction with the contact / separation with the back surface of the liquid crystal monitor 2. Thus, the opening / closing operation of the liquid crystal monitor 2 can be detected.

(Modification 2)
FIG. 18 shows an example of orthogonal arrangement of hinge axes as a second modification example. As in the first embodiment, 1 is a main body, 2 is a liquid crystal monitor, 4a is a first hinge axis, and 5 is a slide plate.

  In the second modification, as shown in the drawing, the liquid crystal monitor 2 is rotatably coupled to one side portion of the slide plate 5 via a second hinge shaft 35.

  That is, the liquid crystal monitor 2 is provided along one side portion of the slide plate 5 via the second hinge shaft 35 whose axis is orthogonal to the first hinge shaft 4a.

Thus, in order to provide the liquid crystal monitor 2 along one side of the slide plate 5 instead of the second hinge shaft 5a of the first embodiment, the second hinge shaft 35 whose axis is orthogonal to the first hinge shaft 4a. The structure which provided may be sufficient.
That is, each opening / closing operation of the liquid crystal monitor 2 that opens and closes around the first hinge shaft 4a and the second hinge shaft 35 arranged orthogonally is performed by the single opening / closing detection switch 6 disposed at the same position as in the first embodiment. Can be detected.

(Modification 3)
FIG. 19 shows another arrangement example of the open / close detection switch as the third modification. Like the second modification, 1 is the main body, 2 is the liquid crystal monitor, 4 is the hinge plate, 4a is the first hinge shaft, and 35 is the first. 2 hinge axes.

  In the third modification, as in the second modification, an open / close detection switch 36 is provided on the rear surface of the main body 1 in a configuration in which the liquid crystal monitor 2 is rotatably coupled to one side portion of the slide plate 5 via the second hinge shaft 35. (The whole picture is not shown).

That is, in the same manner as in the first modification, the open / close detection switch 36 is disposed at a substantially central position on the back surface of the main body 1.
In the open / close detection switch 36, the movable detector 36a moves forward and backward along an axial direction orthogonal to the first hinge shaft 4a and parallel to the second hinge shaft 35, and protrudes from the hole 1a on the back surface of the main body 1. Only the movable detector 36a is shown.

  Then, holes 4b and 5b are formed at substantially the center positions of the hinge plate 4 and the slide plate 5, respectively.

In this way, it is possible to detect each opening / closing operation of the liquid crystal monitor 2 that opens and closes around the first hinge shaft 4a and the second hinge shaft 35 arranged orthogonally.
That is, the movable detector 36a of the single open / close detection switch 36 provided at the substantially central position on the back surface of the main body 1 passes through the holes 4b and 5b at the substantially central positions of the hinge plate 4 and the slide plate 5 and is orthogonally arranged. Each of the opening and closing operations of the liquid crystal monitor 2 can be detected by making contact with the back surface of the liquid crystal monitor 2 that opens and closes around the first hinge shaft 4a and the second hinge shaft 35, respectively.

(Other variations)
In the above embodiment, the camera is used. However, the present invention is not limited to this, and may be another electronic device such as a mobile phone including a display unit such as a liquid crystal monitor.
In the embodiment, the liquid crystal monitor is used as the opening / closing member, but another display unit, an opening / closing lid, a cover, or the like may be used.
Furthermore, in the embodiment, although two hinge axes are used, three or more hinge axes may be used.
Further, the shape of the main body and the opening / closing member is arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

As mentioned above, although several embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment, The range of the invention described in the claim, and its equivalent range Including.
The invention described in the scope of claims attached to the application of this application will be added below.
The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch that detects each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body contacts. Open / close detection device.
<Claim 2>
2. The opening / closing detection device for an opening / closing member according to claim 1, wherein the opening / closing detection switch is disposed at a substantially central position between the at least two hinge shafts.
<Claim 3>
The opening / closing member opening / closing detection apparatus according to claim 1, wherein the opening / closing member includes a display element.
<Claim 4>
The opening / closing member according to any one of claims 1 to 3, wherein the movable detector rotates around an axis orthogonal to at least one of the at least two hinge shafts. Open / close detection device.
<Claim 5>
5. The rotating lever for transmitting an opening / closing operation state is further provided by having one end abutting on the opening / closing member and the other end abutting on the movable detector. 6. The opening / closing detection device for the opening / closing member according to claim 1.
<Claim 6>
4. The opening / closing operation according to claim 1, wherein the movable detector moves forward and backward along an axial direction parallel to at least one of the at least two hinge shafts. 5. Member open / close detection device.
<Claim 7>
The movable detector abuts on the opening / closing member in the process of opening / closing the opening / closing member around one hinge axis, and the moving member is opened / closed in the process of opening / closing the other hinge shaft. The opening / closing detection device for an opening / closing member according to any one of claims 1 to 3 and 6, wherein a recess or a projection that does not contact the detector is provided.
<Claim 8>
An electronic apparatus comprising the open / close member according to claim 1 and the open / close detection device.

DESCRIPTION OF SYMBOLS 1 Main body 1a Hole 2 Opening / closing member 2a Recess 2b Inclined surface 3 Hinge mechanism 4 Hinge plate 4a First hinge shaft 4b Hole 5 Slide plate 5a Second hinge shaft 5b Hole 6 Open / close detection switch 6a Movable detector 7 Rotating lever 7a One end 7b Other end 8 Rotating shaft 16 Open / close detection switch 16a Movable detector 26 Open / close detection switch 26a Movable detector 35 Second hinge shaft 36 Open / close detection switch 36a Movable detector

Claims (7)

An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts ,
An opening / closing detection device for an opening / closing member , wherein the movable detector rotates around an axis orthogonal to at least one of the at least two hinge shafts . An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts,
An open / close detection device for an open / close member, wherein the movable detector moves forward and backward along an axial direction parallel to at least one of the at least two hinge shafts. An opening and closing member that opens and closes around at least two hinge axes with respect to the main body;
An opening / closing detection switch for detecting each opening / closing operation of the opening / closing member around the hinge axis with a single movable detector at a position where the opening / closing member of the main body abuts,
The movable detector abuts on the opening / closing member in the process of opening / closing the opening / closing member around one hinge axis, and the moving member is opened / closed in the process of opening / closing the other hinge shaft. An opening / closing detection device for an opening / closing member, characterized in that a recess or a projection is provided to which the detector does not contact. The opening / closing detection device for an opening / closing member according to any one of claims 1 to 3 , wherein the opening / closing detection switch is disposed at a substantially central position between the at least two hinge shafts. The opening / closing member opening / closing detection apparatus according to any one of claims 1 to 4, wherein the opening / closing member includes a display element. It said opening and closing member in contact end is brought, by the other end to the movable detection element abuts any one of claims 1 to 5, characterized by further comprising a rotation lever for transmitting the opening and closing operation state The opening / closing detection device for the opening / closing member according to claim 1. An electronic apparatus, comprising the intrusion detection device and the opening and closing member according to any one of claims 1 to 6.

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