JP2001244652A - Operation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve structure of a lid in an operation panel provided with a pivotal lid whose one end is supported at a pivotal center in such a manner that opening and shutting are enabled on the operation panel main body. SOLUTION: When the lid 10 is pivoted so as to open a specified angle from a closed state, a tongue 115 of the lid 102 gets over a first protruding part 116 of a pawl 116 of a cover 101 of the operation panel main body, and engages elastically with a part between the first protruding part 116a and a second protruding part 116b, so that the lid 102 is held. When the lid 102 is made to pivot further in the direction for opening the lid 102, the tongue 115 cannot get over the protruding part 116b, and the pivoting is hindered. When the lid 102 is to be opened further with a strong force from the above state, a pivoting center shaft 111 of the cover 101 comes off from an aperture 119 of an engaging part 114 of the lid 102, and the lid 102 gets out of the cover 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation panel of an electronic device, and more particularly to an operation panel that opens and closes on an operation panel body.
The present invention relates to an operation panel having a rotatable lid having one end held at a rotation center.

[0002]

2. Description of the Related Art Conventionally, for example, in an operation panel such as a facsimile apparatus, in order to effectively use the input keys without increasing the number of input keys provided on the operation panel, the operation keys are opened and closed on an input key group of the operation panel body. In this configuration, a rotatable lid is provided so that the input function of an input key is switched by detecting the opening and closing of the lid. For example, in a facsimile machine, a one touch panel lid that is rotatable to open and close on a one touch dial key group for inputting a destination telephone number with one touch is provided,
In accordance with the opening and closing, a configuration is adopted in which the telephone number of the destination assigned to each one-touch dial key is switched, or the input function of the destination is switched to another input function.

In the conventional configuration of such an operation panel,
As shown in FIG. 10, the operation panel 20 is arranged parallel to, ie, horizontally with respect to, the installation surface (usually a horizontal plane) of the main body 1 of an apparatus (here, a facsimile apparatus) provided with the operation panel. The lid 102 is opened at an angle of 90 ° or more with respect to the main body of the operation panel 20, engages with a stopper (not shown) at a predetermined angle, and is held at the position of the opening angle by its own weight.

[0004]

However, in the above-mentioned conventional example, the lid 102 is held at a predetermined opening angle by its own weight in an open state. In order to secure a space for this, the layout of the operation panel 20 and the position of the center of rotation of the lid 102 must be restricted. Had the disadvantage of receiving That is, the operation panel 20 is disposed so as to protrude from the upper surface of the apparatus main body 1 so that the operation panel 20 does not interfere with the upper surface of the apparatus main body 1 even when the lid 102 is opened at a large angle. When the operation panel 20 and the upper surface of the apparatus main body 1 are flattened to reduce the size of the entire apparatus, or when the design is allowed to have a degree of freedom, there is a drawback that restrictions are imposed.

In the above conventional example, the apparatus main body 1
Has a certain size, and when the apparatus is a facsimile apparatus or the like, since the paper discharge trays 121 and 122 are protruding from the apparatus main body 1, the installation area of the apparatus is substantially large, and the lid 102 is opened. In this state, it is unlikely that the user will carelessly hit his or her hand to damage the lid 102 or the operation panel 20.

However, when the same configuration as that of the conventional example is adopted for a compact device, the device is naturally installed in a small space, so that the user carelessly covers his / her hand with the operation panel cover open. The chance of hitting is higher.

When the lid is broken, the closed state of the lid cannot be detected, so that the input function in the closed state of the input key group whose input function is switched by opening and closing the lid cannot be used. In some cases, the device cannot be used until the lid is replaced with a new one.

Further, when the operation panel main body is damaged, it is necessary to replace the operation panel, and in the same manner as described above, there is a disadvantage that the apparatus cannot be used and a large expense is imposed on the user.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to provide a control panel of this type which is flat with the upper surface of the main body of an electronic device on which the operation panel is mounted. Does not interfere with the upper surface of the main body of the electronic device when the electronic device is opened to the opening angle at which the electronic device is installed, and the opening angle of the lid with respect to the installation surface of the electronic device can be made smaller than 90 °. An object of the present invention is to provide a configuration that can prevent damage to the lid or the operation panel main body even if an excessive force is applied in the opening direction by, for example, inadvertently hitting a hand to the lid that has been opened to the open angle.

[0010]

According to the present invention, there is provided, in accordance with the present invention, a lid rotatably held at one end thereof at a center so as to open and close on an operation panel body. In the operation panel, a first engagement portion provided at an end of the lid on the rotation center side, and a second engagement portion provided at a position capable of engaging with the first engagement portion in the operation panel body. The second engaging portion has flexibility, and the first engaging portion has
A first convex portion and a second convex portion having a larger protruding amount than the first convex portion are formed on the side opposed to the engaging portion, and when the lid is rotated to open a predetermined angle from the closed state, The first engagement portion extends over the first convex portion of the second engagement portion, and
When the lid is held by being elastically engaged between the convex part and the second convex part, and when the lid is further rotated in the opening direction by the predetermined angle or more, the first A configuration is employed in which the rotation is prevented without the engaging portion being able to climb over the second convex portion.

[0011] Furthermore, a rotation center axis provided on the operation panel main body and serving as a rotation center of the lid is provided at one end of the cover, and is rotatably fitted to the rotation center axis. A fitting portion, wherein the fitting portion is formed in a cylindrical shape with a part of the outer periphery cut out as an opening, has flexibility, and holds the lid at the predetermined angle or more. When the lid is further rotated in a direction in which the lid is opened from a state in which the rotation is prevented from rotating in the opening direction with a force equal to or more than a predetermined value,
A configuration is adopted in which the rotation center shaft comes off from the opening of the fitting portion and the lid comes off the operation panel main body.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Here, an embodiment of an operation panel mounted on a facsimile machine will be described. First, the overall configuration of the facsimile machine will be described, and then the details of the operation panel will be described.

<Description of Overall Configuration of Facsimile Apparatus> FIG. 1 is a cross-sectional view showing the overall configuration of a facsimile apparatus as an image forming apparatus equipped with an operation panel of the present embodiment, and FIG. FIG.

In FIG. 1, reference numeral 1 denotes an apparatus main body, 2 denotes a cartridge cover, and a sheet document mounting table configured to be able to stack a plurality of documents (sheets) S, and 3 denotes image information of the document S. An image reading unit for reading, 4 a recording apparatus main body composed of a laser beam printer for recording an image on a recording paper P, 5 a document transport unit, 6 a document pressing unit, 7
Is a contact image sensor, 8 is a laser scanner as an optical signal scanning unit, 9 is an image forming unit (image forming unit), 10 is a fixing unit (thermal fixing unit), 11 is a cassette unit, and 12 is an ASF.
A paper feed unit, 13 is a recording paper transport path switching flapper, 14 is a recording paper discharge cover, 15 is a face down guide, 16 is a face down recording paper discharge tray, 17 is a heat radiation duct, 18
Denotes an upper document guide, 19 denotes a lower document guide, and 20 denotes an operation panel.

Hereinafter, the configuration of each of these units will be described in detail.

First, in the configuration of the image reading section 3 for reading the image information while transporting the original S, first, the original S stacked on the sheet original placing table 2 is separated into one sheet by a separation roller 22 which presses against the friction piece 21. Then, the separated original S is conveyed to the close contact type image sensor 7 by the paper feed roller 24 pressed by the pressing spring 23 and the paper feed roller 25 pressed against the paper S. The original S is pressed against and brought into close contact with the contact image sensor 7 by the original pressing section 6, and the image information of the original S is read by the contact image sensor 7.
The original S is discharged out of the apparatus by a discharge roller 26 pressed by a pressing spring 23 and a discharge roller 27 pressed against the discharge roller 26. During this time, the document S is guided by the upper document guide 18 and the lower document guide 19.

The sheet document mounting table 2 is provided at an angle, and the document S is guided to the separation roller 24 by its own weight, so that it has a compact configuration that does not require a preliminary conveyance unit.

The sheet document table 2 is provided with a slider 2a slidable in a direction perpendicular to the direction in which the document S is conveyed (the width direction of the document S). And the slider 2
By a, both sides of the document S stacked on the sheet document mounting table 2 can be aligned. When the document S is a long document, the rear end of the document S can be prevented from protruding from the document table 2 and hanging down by the document tray 2b.

In the configuration of the recording apparatus main body 4, the electric control unit 2
Laser scanner 8 based on the image signal output from
A laser beam transmitter 8a emits a beam of a modulated optical signal, and the modulated beam is irradiated as scanning light on a photosensitive drum 9a of an image forming unit 9 by a polygon mirror 8b, so that image information is transmitted to the surface of the photosensitive drum 9a. Then, after the image information is transferred and fixed to the recording paper (sheet) P fed from the cassette unit 11 to the image forming unit 9, the recording paper P is discharged onto the recording paper stacking tray 16. It has become.

The photosensitive drum 9a is integrally incorporated in a recording cartridge 9e together with a primary charger 9b, a developing roller 9c and a cleaning blade 9d, and is configured to be detachable from the apparatus main body 1. The surface of the photosensitive drum 9a is uniformly charged by the primary charger 9b, and when the scanning light sent from the polygon mirror 8b is irradiated through the folding mirror 8c to the surface, a latent image is formed on the surface. The latent image is visualized by toner supplied from the developing roller 9c.

A transfer charger 9f is arranged around the photosensitive drum 9a of the image forming section 9. Further, a heat fixing device 1 is provided on the recording paper conveyance path downstream of the photosensitive drum 9a.
0, a paper discharge roller pair 10a and a face-down paper discharge roller pair 10b are arranged.

After the toner image formed on the surface of the photosensitive drum 9a is transferred by the transfer charger 9f, the recording paper P is conveyed along the conveyance guide 29, and the toner image is fixed by the heat fixing device 10, Thereafter, the sheet is sent to the sheet discharge roller pair 10a.

The user can select an output mode of the two recording papers P, that is, one of face-down discharge and face-up discharge. Here, face-down discharge means a mode in which the document is discharged so that the recording surface of the document faces downward and the order of output pages is aligned. In addition, face-up discharge refers to a format in which the recording surface is directed upward so that the recorded contents can be checked even during discharge.
The switching of both types is performed by the recording paper transport path switching flapper 1.
3 is moved to switch the conveyance path of the recording paper P after recording.

FIG. 1 shows a state of face-down discharge. The recording paper P turned upward by the flapper 13 is guided along the face down guide 15, and
The sheet is discharged onto a heat-dissipating duct 17 integrated with the cartridge cover 2 and a face-down recording sheet discharge tray 16 continuous therewith by the face-down sheet discharging roller pair 10b.

The heat radiating duct 17 is located above the fixing unit 10. The heat generated in the fixing unit 10 is radiated upward along the heat radiating duct 17 by natural convection, and the heat is transferred to the image forming unit 9 (cartridge 9e). It is shielded so that it does not go around.

When the user selects face-up discharge, the flapper 1 is operated by a switching lever (not shown).
3 is changed, and the recording paper P is discharged onto the recording paper discharge cover 14.

The cassette section 11 is provided at the bottom of the apparatus main body 1. The recording paper P loaded on the cassette 30 is
When the middle plate 32 is rotated upward by the lifter arm (feeding force applying means) 31, the intermediate plate 32 is pressed against the separation roller 33 and separated one by one by the separation pad 34 (friction piece separation method). The sheet is conveyed in reverse along a conveyance path formed by the conveyance guide 36 and the rear cover 37 by the conveyance roller 35, and is sent to the image forming unit 9 by the conveyance roller 38.

The cassette 30 has a capacity of, for example, about 250 sheets of recording paper.
(Front-loading method). The stackable recording paper sizes are, for example, A4 and letter.

The ASF paper feed section 12 is located on the opposite side of the laser scanner 8 and the image forming section 9 from the image reading section 3.

Recording paper Q placed on ASF tray 39
Is pressed against the ASF separating roller 41 by rotating the ASF intermediate plate 40 to the left in the drawing, separated one by one by the ASF separating pad 42 (friction piece separation method), and conveyed. It is sent to the image forming unit 9 by 38.

In the ASF tray 39, the number of sheets that can be stacked is, for example, about 100, and the side of the recording sheet Q is regulated by the ASF slider 43 movably arranged according to the recording sheet size so that the sheet does not skew. By moving the ASF slider 43, the ASF
4. It can handle up to letter size and legal size paper width.

A cartridge cover (document mounting table) 2;
The image reading unit 3, the heat radiation duct 17, and the operation panel 20 are integrally formed and supported rotatably with respect to the apparatus main body 1 about a fulcrum 44, and these are rotated leftward in FIG. By opening the recording cartridge 9e, the recording cartridge 9e can be pulled out and replaced.

In this facsimile apparatus, the cartridge cover 2 is provided with an interlock mechanism.
When the cartridge cover 2 is open or the recording cartridge 9e is not set in the apparatus main body 1, the recording apparatus main body 4 does not operate.

If a jam occurs during recording, the recording sheet P staying inside the apparatus main body 1 is opened by opening any of the cartridge cover 2, the rear cover 37, the face down guide 15, and the cassette section 11.
Or Q can be taken out.

The recording paper discharge cover 14 forms a recording paper face-up paper discharging portion, and is fixed to the apparatus main body by screws (not shown). Below the recording / discharge cover 14, an electric control unit 28 for controlling the entire apparatus is provided.

<Description of Operation Panel> Next, operation panel 2
0 will be described in detail with reference to FIGS.

FIG. 3 is a perspective view of the operation panel 20, and FIG. 4 shows a state in which the one touch panel cover 102 of the operation panel 20 is opened.

The operation panel 20 includes an operation cover 101 which is a cover of the operation panel main body, and a one touch panel lid 10.
2. Numeric keypad 103 for numeric input (12 for dial
Keys, various function keys 104 (six), one-touch keys 105 (24), start key 106, stop key 107, etc., control board 108
LCD 1 for displaying various messages (shown in FIG. 1)
09, various LEDs 110a for displaying an error display, etc.
110b and the like.

The one-touch panel lid 102 has a rotation center axis 111 provided on the operation cover 101 shown in FIG. 4 as a rotation center, one end held at the rotation center, and the other end as a free end, as shown in FIG. It is configured to be rotatable between a closed state shown in FIG. 4 and an open state shown in FIG. When closed, the tubular portion 112 formed on the one touch panel lid 102 is closed.
Is pressed by pressing a switch (not shown) provided below the hole 113 formed in the operation cover 101 to detect a closed state, and each one-touch key 105 inputs a pre-registered telephone number with one touch. Function as one-touch dial keys. Also, when the one touch panel lid 102 is open, the open state is detected by the cylinder portion 112 being separated from the switch,
The one-touch key 105 functions as a key for registering various data. The one-touch panel lid 102 has a hole 123 into which the one-touch key 105 is inserted in a closed state. In addition, one touch panel lid 1
Numeral 02 is integrally formed from a synthetic resin.

Next, FIG.
FIG. 4 is an enlarged perspective view of a portion around the rotation center of FIG.

In FIG. 5, 111a and 111b (FIG. 4)
In FIG. 1, reference numeral 111 denotes a column-shaped rotation center axis provided on the operation cover 101.
2 is the center of rotation.

Reference numerals 114a and 114b denote fitting portions formed integrally with the one-touch panel cover 102, formed on both sides of one end of the one-touch panel cover 102,
11a and 111b are rotatably fitted. As a result, one end of the one touch panel cover 102 is
11a and 111b. Fitting portions 114a, 11
As shown in FIGS. 6 to 8 to be described later, 4b has a cylindrical shape with a part of the outer periphery cut out as openings 119a and 119b, has flexibility, and is described later by external force. As shown in FIG. 8, the openings 119a and 119b are elastically deformable so as to expand. And the opening 1
As shown in FIG. 7 described later, when a tongue 115 described below is engaged between first and second protrusions 116a and 116b of a claw 116 described later, the contact A Are provided on the circumference of the fitting portions 114a and 114b opposed to.

Reference numeral 115 denotes a tongue formed integrally with the one-touch panel lid 102, and is formed so as to protrude from the center of the edge on the rotation center side of the lid 102. This tongue 11
Reference numeral 5 denotes an engaging portion that engages with the claw portion 116 described below.

Reference numeral 116 denotes a claw as an engaging portion that engages with the tongue 115.
The first convex portion 116 a is provided at a position facing the tongue portion 115 so as to face the tongue portion 115.
And a second convex portion 116b. First convex part 1
16a is formed near the tip of the claw 116. The second convex portion 116b is formed at the tip of the claw portion 116, and has a larger protrusion amount than the first convex portion 116a. The claw portion 116 is an operation cover 101 made of a synthetic resin.
Are formed integrally. The claw portions 116 are configured to have flexibility, that is, to be elastically deformed in the thickness direction by providing cuts on both sides.

Reference numerals 117a and 117b denote walls of the one touch panel lid 102, which are formed so that the edge of the lid 102 on the rotation center side is bent in an L-shape with respect to the surface of the lid 102. (See FIGS. 6 and 7).

Next, the operation of the one-touch panel cover 102 from the closed state to the open state until it is further released will be described with reference to FIGS. These are sectional views of the vicinity of the center of rotation of the one touch panel cover 102 of the operation panel 20.

FIG. 6 shows a state in which the one touch panel lid 102 is closed. In this state, when the user rotates the one-touch panel lid 102 by hand in the clockwise direction in the figure and gradually opens the same, the tongue 115 of the one-touch panel lid 102 is opened when the one-touch panel lid 102 is opened at a predetermined angle as shown in FIG. Moves the claws 116 of the operation cover 101 counterclockwise in the figure (lower left).
When the claw 116 returns in the clockwise direction, the tongue 115 is clicked and the tongue 115 is moved to the first and second protrusions 116a and 116b.
Resiliently engage between. Thereby, the one touch panel lid 102 is held.

When the user attempts to further rotate the one touch panel lid 102 clockwise from this state, the claw portion 116 is elastically deformed in the counterclockwise direction in FIG. Since the protrusion amount is large, the tongue portion 115 cannot get over the convex portion 116b, and further rotation of the one touch panel lid 102 in the clockwise direction is prevented.

On the other hand, when the user attempts to rotate the one touch panel lid 102 clockwise by applying a stronger force than a predetermined value, the one touch panel lid 102 contacts the tongue 115 and the contact A of the claw 116. 8, the opening portions 119a and 119b facing the contact A at this time due to the force.
The fitting portion 114 of the one touch panel lid 102 is opened
a, 114b are elastically deformed, and the openings 119a, 119b
, The pivot shafts 111a and 111b come off, and the one touch panel lid 102 comes off the operation cover 101 of the operation panel body.

The operation panel 20 of the present embodiment as described above
According to the embodiment, the one-touch panel lid 102 is opened at a predetermined angle as shown in FIG. 7, and the tongue 115 of the one-touch panel lid 102 and the claw 11 of the operation cover 101 are independent of their own weight.
6, the opening angle at this time can be set to a desired value, whereby, for example, as shown in FIG. 9, the opening angle B with respect to the installation surface of the apparatus main body 1 can be set to 90 ° or less. It is. By doing so, even when the operation panel 20 and the upper surface of the apparatus main body 1 are configured to be flat, they do not interfere with the apparatus main body 1 when the one touch panel lid 102 is opened to the open angle B where the lid 102 is held. Further, even if the operation panel 20 is arranged to be inclined with respect to the apparatus main body 1, there is no need to open the lid 102 greatly, so that the degree of freedom in designing the apparatus is increased. Therefore, as shown in FIGS. 1 and 9, the operation panel 20 and the image reading unit 3 can be arranged at an angle to the installation surface of the apparatus main body 1 to reduce the installation area of the apparatus. The upper surface of the apparatus main body 1 can be flattened to have a compact apparatus configuration.

When the one touch panel lid 102 is opened from the closed state to the opening angle shown in FIG. 7, the tongue 115 rides over the first projection 116a of the claw 116 and the first and second projections 116a, Since the click is made at a predetermined opening angle due to the engagement between 116b, the user can intuitively know that one-touch panel lid 102 is held at that angle. If not, the user will need to force open the lid 102 if he tries to open it anymore, so he rarely tries to open it any more (not in our tests).

Further, the user may further forcibly rotate the one-touch panel cover 102 in the opening direction, or the user may inadvertently open the one-touch panel cover 1 with the hand opened.
02 and apply excessive force in the opening direction,
Fitting portions 114a and 114b of one touch panel lid 102
The rotation center axes 111a and 111b of the operation cover 101 come off from the openings 119a and 119b of the operation panel 101, and the one touch panel lid 102 comes off the main body of the operation panel 20, so that both the one touch panel lid 102 and the main body of the operation panel 20 are damaged. There is no. The detached one touch panel lid 102 can be used if the fitting portions 114a and 114b are fitted to the rotation center shafts 111a and 111b of the operation cover 101 and attached to the main body of the operation panel 20, and can be repaired or replaced. No need to do.

The claw portion 116 is formed integrally with the operation cover 101 made of synthetic resin.
Since the a and 114b and the tongue 115 are also formed integrally with the one-touch panel lid 102 made of synthetic resin, the number of parts is not increased and the cost is not increased. Although it is disadvantageous in terms of the number of parts and the cost, these members may be configured as separate parts, and may be combined and integrated.

The configuration of the operation panel according to the present invention described above is not limited to a facsimile machine, but can be applied to operation panels of various other electronic devices.

[0055]

As is apparent from the above description, according to the present invention, there is provided an operation panel having a rotatable lid held at one end at the center of rotation so as to open and close on the operation panel body. When the lid is rotated to open a predetermined angle from the closed state, the lid is held by the elastic engagement between the lid and the engaging portion provided on the operation panel main body, and further rotation is performed. Is prevented, the opening angle when the lid is held in the open state can be set as desired, and by setting it small, the operation panel can be mounted on the upper surface of the main body of the electronic device on which it is mounted. Even when the lid is flat, the lid does not interfere with the upper surface of the main body of the electronic device when the lid is opened to the opening angle, and the opening angle of the lid with respect to the installation surface of the electronic device is 90 ° or less. Can be.
Therefore, the degree of freedom in designing the electronic device is increased, and the electronic device can be made compact by making the operation panel flat or inclined with the upper surface of the main body of the electronic device on which the electronic device is mounted. Furthermore, even if an excessive force is applied in the opening direction by, for example, inadvertently hitting the lid with the user in the opened state, the lid is detached from the operation panel main body, and the lid or the operation panel main body is damaged. An excellent effect of preventing the occurrence of the above is obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an overall configuration of a facsimile apparatus equipped with an operation panel according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the entire appearance of the facsimile machine.

FIG. 3 is a perspective view showing the appearance of the facsimile apparatus in a state in which a one touch panel cover of an operation panel is closed.

FIG. 4 is a perspective view showing an appearance of the operation panel in a state where a one touch panel cover is opened.

FIG. 5 is an enlarged perspective view of the one touch panel lid of the operation panel near the center of rotation.

FIG. 6 is a cross-sectional view of the vicinity of the center of rotation when the one touch panel lid of the operation panel is closed.

FIG. 7 is a cross-sectional view of the vicinity of the center of rotation when the one touch panel lid of the operation panel is opened at a predetermined angle.

FIG. 8 is a cross-sectional view near the center of rotation showing a state in which a one touch panel lid of the operation panel comes off the operation panel main body.

FIG. 9 is an explanatory diagram showing an opening angle with respect to the apparatus installation surface in a state where the one touch panel lid is opened and held.

FIG. 10 is a perspective view showing the appearance of a device equipped with a conventional operation panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Sheet document mounting table 3 Image reading part 4 Recording apparatus main body 5 Document conveyance part 9 Image forming part 11 Cassette part 12 ASF paper feeding part 20 Operation panel 101 Operation cover 102 One touch panel lid 111a, 111b Rotation center axis 114a , 114b Fitting part 115 Tongue 116 Claw 116a First convex 116b Second convex 117a, 117b Wall 119a, 119b Opening

Claims (4)

[Claims] 1. An operation panel provided with a rotatable lid whose one end is held at a rotation center so as to open and close on an operation panel main body, wherein the lid is provided at an end of the lid on the rotation center side. A first engaging portion; and a second engaging portion provided at a position in the operation panel main body where the first engaging portion can be engaged with the first engaging portion. The second engaging portion is flexible. A first convex portion and a second convex portion having a larger protrusion amount than the first convex portion are formed on a side facing the first engaging portion, and the lid is opened from a closed state by a predetermined angle. When the first engaging portion is rotated, the first engaging portion rides over the first convex portion of the second engaging portion and elastically engages between the first convex portion and the second convex portion. The first engaging portion rides on the second convex portion when the lid is rotated in a direction in which the lid is opened by the predetermined angle or more. From the control panel, characterized in that as rotation is prevented in not a Erare. 2. A rotation center axis provided on the operation panel main body and serving as a rotation center of the lid, and provided at one end of the lid and fitted rotatably with respect to the rotation center axis. A fitting portion, the fitting portion is formed in a cylindrical shape, a part of the outer periphery of which is cut out as an opening, has flexibility, and holds the lid at the predetermined angle or more. When the lid is further rotated in a direction of opening the lid with a predetermined force or more from a state in which the rotation is blocked in the opening direction, the rotation center axis passes through the opening of the fitting portion. 2. The operation panel according to claim 1, wherein the cover is detached from the operation panel main body through the opening. 3. The electronic device according to claim 2, wherein the operation panel is mounted on an electronic device.
When the lid is opened and held at the predetermined angle, the opening angle of the lid with respect to the installation surface of the main body of the electronic device is 90 degrees.
The operation panel according to claim 1, wherein the angle is equal to or less than 0 °. 4. The operation panel according to claim 1, wherein the second engagement portion is formed integrally with a cover of the operation panel main body formed of a synthetic resin.