JPH0414795Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to the structure of an operation panel on which various operators are arranged in an electronic device such as a keyboard electronic musical instrument such as an electronic organ.

[Summary of the invention] In this invention, the operation panel of an electronic device is composed of a panel body and an inner panel that is removably fitted into a recessed part of the panel body, and a plurality of operators are provided on the surface of the inner panel. By mounting a printed circuit board corresponding to the operator on the back side, the panel body can be used in common with multiple types of electronic equipment of different grades with a common design.

[Conventional technology]

2. Description of the Related Art In electronic devices such as keyboard electronic musical instruments, a large number of operators such as select switches and various electronic volumes for selecting various tones, effects, etc. are arranged on an operation panel.

The number and arrangement of these various controls have different specifications for each model depending on the grade, etc., even in the same series of electronic devices with almost the same design. The entire operation panel was made by integral molding.

[Problem that the invention attempts to solve]

However, it is difficult to create a dedicated operation panel for each model with different specifications.
Even if the number and arrangement of controls differ, a large mold for molding the control panel is required, which not only increases costs, but also requires the use of a large mold to mold the detailed shapes of the housing parts, etc., in which various controls are mounted. The problem was that it was difficult to mold accurately.

In addition, all of the controls and the corresponding wiring circuits or printed circuit boards and other electronic circuit boards and power supply circuits that make up the control circuit were mounted on a large, integrated operation panel, making it easier to assemble and service. Also, there were some problems in terms of mounting space.

The object of this invention is to provide an operation panel for electronic equipment that can solve all of these problems.

[Means for solving problems]

In order to achieve the above object, the operation panel of an electronic device according to this invention includes a panel body having a recess, a plurality of operators on the surface, and a peripheral wall having an inner shape that fits into the recess of the panel body. It consists of a panel and a printed circuit board attached to the back side of the inner panel and constituting a wiring circuit or control circuit corresponding to each of the above-mentioned operators.

The concave portion of the panel body is provided with locking portions formed by a plurality of elongated holes at intervals around the concave portion, and an opening is provided in the bottom surface of the concave portion of the panel body. A plurality of hook-shaped locking portions are provided to protrude and fit into and engage with the locking portions, respectively.

Fit this inner panel into the recess of the panel body,
The locking portions protruding from the lower edge of the peripheral wall are engaged with the locking portions formed around the concave portion of the panel body to attach the printed circuit board and other electrical circuits provided on the panel body. The structure is such that the substrate or a power supply circuit or the like is connected through an opening provided at the bottom of the recess.

[Effect]

The operation panel of an electronic device configured in this way is
It is completed by fitting and locking the inner panel with multiple controls and printed circuit boards into the recesses of the panel body from the outside, so the number of controls can be reduced by changing only the inner panel. It is possible to obtain control panels for electronic devices with various specifications and different layouts. In that case, the panel main body can be common to various operation panels, so the mold manufacturing cost can be significantly reduced.

Moreover, the inner panel is stable because its peripheral wall fits into the recess in the panel body, and installation is as simple as pushing the inner panel into the recess in the panel body, and the inner panel can be installed by simply pushing the inner panel into the recess in the panel body. The hook-shaped locking part is held in the recess by fitting into and engaging with the locking part formed by the long hole provided around the recess in the panel body, so there is no need to use screws or the like. , can be done extremely easily and efficiently.

Also, the main body panel and the inner panel can be made flush.

In addition, the wiring and connectors between the printed circuit board attached to the back of the inner panel and other electric circuit boards or power supply circuits provided on the panel body side are
Since the connection is made through the opening provided in the bottom of the recess of the panel body, it is easy to attach and detach.

Furthermore, when performing maintenance or inspection, the inner panel can be easily removed and inspected, improving serviceability.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the drawings.

FIG. 1 is an exploded perspective view of one embodiment of this invention, which consists of a panel body 1 and two inner panels 2 and 3.

The panel main body 1 has a first
a recess 11, a second recess 12 for mounting the inner panel 3, a window hole 13 for the upper keyboard, and a window hole 1 for the lower keyboard.
4 and a recess 15 for mounting a music stand.

The first recess 11 is further provided with locking portions 11a formed by a plurality of elongated holes at appropriate intervals around the first recess 11, and a plurality of openings 11b are provided in the bottom surface. Similarly, the second
The recess 12 also has a locking portion 12a formed by a plurality of elongated holes.
and an opening 12b are provided.

On the other hand, the inner panel 2 has a shape that fits into the first recess 11 of the panel main body 1, and has a large number of operable operators 21 such as various select switches and electronic volumes on its surface, and has a lower part of the peripheral wall. Recessed part 1 on the edge
A plurality of hook-shaped locking portions 2a are provided in a protruding manner, each of which engages with one of the locking portions 11a.

The inner panel 3 has a shape that fits into the second recess 12 of the panel main body 1, and has a multi-menu display window 31 and various operators 32 such as a select switch on its surface, and has a lower edge of the peripheral wall. recessed part 1
A plurality of hook-shaped locking portions 3a are provided to protrude and engage with the two locking portions 12a, respectively.

Printed circuit boards constituting wiring circuits or control circuits corresponding to the respective operators 21 and 32 are mounted on the back sides of these inner panels 2 and 3, and the mounting structure thereof will be described later.

The first recess 1 of the panel main body configured in this way
1 to the inner panel 2, and the second recess 12 to the inner panel 3.
When the locking portions 2a of the inner panel 2 are fitted together and pushed in, each locking portion 11a of the first recess 11
The locking portions 3a of the inner panel 3 are inserted and engaged with the locking portions 12a of the second recess 12 to prevent them from coming off, completing the operation panel 10.

FIG. 2 shows a state in which the completed operation panel 10 is attached to the main body of an electronic musical instrument.

In FIG. 2, 4 is an upper keyboard, 5 is a lower keyboard, and 6 is a music stand.

FIG. 3 is a simplified cross-sectional view showing the attachment part of the inner panel 2 of the operation panel 10 in FIG. Attach the printed circuit board 22 to the screw 2
It is attached by 3.

On this printed circuit board 22, a tact switch 24 that is turned on and off by an operator 21, its wiring circuit, etc. are printed, and a connector 25 is attached to one end, and a connecting wire 19 is pulled out and connected to the panel body 1. Through the formed opening 11b, it is connected to another electric circuit board (not shown) attached to the panel body 1 side, a power supply circuit, or the like.

Although the cross section of the mounting portion of the inner panel 3 is not shown, it is constructed almost in the same way.

Other Embodiments Next, another embodiment of this invention will be described with reference to FIG. This FIG. 4 is a sectional view of the inner panel attachment part similar to that in FIG. 3, and parts corresponding to those in FIG. 3 are given the same reference numerals, and their explanation will be omitted.

In this embodiment, a stepped portion 11c is formed on the upper edge of the recessed portion 11 of the panel body 1, and a projecting edge portion 2 is formed on the upper edge of the inner panel 2 in the form of a flange.
c is placed so that the gap between the panel body 1 and the inner panel 2 is not noticeable.

Furthermore, an LED 26 is attached to the top surface of the printed circuit board 22 attached to the back side of the inner panel 2, and the LED 26 emits light in conjunction with a tact switch 24' that is turned on and off by the operator 21'.
Corresponding to the LED 26, a lens 27 made of transparent resin (acrylic or the like) is protrudingly provided to guide the emitted light to the panel surface.

Furthermore, a plurality of bosses 16 are provided protruding from the lower surface of the recess 11 of the panel body 1, and a motherboard 17, which is an electric circuit board on which various electronic components are mounted, is attached parallel to the printed circuit board 22.

A connector 28 is provided on the upper surface of this motherboard 17, and a printed circuit board 22 corresponding to the connector 28 is provided on the upper surface of this motherboard 17.
A connector 18 is provided on the bottom surface of the inner panel 2.
When mounted in the recess 11 of the panel body 1, the connectors 18 and 28 are connected through the opening 1b, and both the substrates 17 and 22 are electrically connected.

In this way, attachment and detachment of the inner panel and electrical connection/separation between the printed circuit boards can be performed with a single touch, further improving assemblability and serviceability.

In addition, since the length of the boss portion 2b protruding from the inner panel 2 is preferably short, "sink marks" will not occur during molding and dents will not occur on the surface corresponding to the boss portion 2b. Since the boss portion 16 on the panel body 1 side also requires a relatively short time, it is less likely to cause "sink", and even if a slight dent occurs on the surface,
There is no problem because it is covered by the inner panel 2 and cannot be seen from the outside.

In the case of a conventional integrally molded operation panel, the boss part for attaching the motherboard 17 is long, so "sink marks" are likely to occur during molding, and to prevent this, the thickness of the panel must be made considerably thicker. Ta.

Integrated molding of the volume housing The operation panel based on this invention uses a small mold to mold the inner panel on which the various controls are attached separately from the panel body, making it easier to mold fine shapes and instead of forming it separately and installing it. Figure 6 A and B show the volume housing 29 of the electronic volume that was
It can be integrally molded into the inner panel as shown in the figure.

In the figure, 29a designates an insertion hole for installing an operator similar to the operator 21' shown in FIG. 4, 29b a through hole for fitting a lens 27, and 29c an electronic volume section. It is a parting groove for

In this way, by integrally molding the volume housing 29 with the inner panel 2 at the same time, there is no need for a separate mold for molding the volume housing, and there is no need to install the volume housing, resulting in cost reduction. become.

Furthermore, the panel surface becomes flat, increasing the degree of freedom in design. Furthermore, there is no risk of the panel becoming loose or falling off due to vibration, and there is no possibility of dust entering through the gap between the housing and the panel.

In the above description, an embodiment in which this invention is applied to the operation panel of an electronic keyboard instrument has been mainly described, but this invention can be similarly applied to the operation panel of other electronic devices.

[Effect of idea]

As explained above, the operation panel for electronic equipment according to this invention has an inner panel fitted with a plurality of operators and a printed circuit board that is fitted and locked into a recess formed in the panel body. Since a common panel body can be used for electronic devices of various specifications with different numbers and arrangements, mold manufacturing costs can be significantly reduced.

Moreover, the inner panel is stable because its peripheral wall fits into the recess in the panel body, and installation is as simple as pushing the inner panel into the recess in the panel body, and the inner panel can be installed by simply pushing the inner panel into the recess in the panel body. The hook-shaped locking part is held in the recess by fitting into and engaging with the locking part formed by the long hole provided around the recess in the panel body, so there is no need to use screws or the like. , can be done extremely easily and efficiently.

Also, the main body panel and the inner panel can be made flush.

In addition, the wiring and connectors between the printed circuit board attached to the back of the inner panel and other electric circuit boards or power supply circuits provided on the panel body side are
Since the connection is made through the opening provided in the bottom of the recess of the panel body, it is easy to attach and detach.

In addition, assembly is easy because all the controls and printed circuit boards need to be attached to the inner panel and then attached to the panel itself, and serviceability is improved because only the inner panel can be removed and inspected during maintenance and inspection. It also improves.

Furthermore, it is not only easier to arrange the printed circuit board in two stages, which is advantageous in terms of mounting, but also allows the boss section for mounting the printed circuit board to be shortened, which prevents the occurrence of "sink marks" during molding. can.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the operation panel of an electronic musical instrument showing one embodiment of this invention, Fig. 2 is a perspective view showing the completed operation panel attached to the main body of the electronic musical instrument, and Fig. 3 is the same internal view. FIG. 4 is a cross-sectional view showing a simplified version of the attachment part of the panel 2; FIG. 4 is a cross-sectional view similar to FIG. 3 showing another embodiment of this invention; FIGS. 5A and B
2 is a plan view showing an example of integrally molding the volume and housing, and a step view taken along line C-C. 1... Panel body, 2, 3... Inner panel, 2
a, 3a...Locking portion, 10...Operation panel, 11
...first recess, 11a...locking part, 11b...
Opening hole, 12...second recess, 12a...locking part,
12b...Opening hole, 13...Window hole for upper keyboard, 14
... Window hole for lower keyboard, 15 ... Recessed part for attaching music stand, 17 ... Motherboard (electric circuit board) 18
... Connector, 21, 21', 32 ... Operator,
22... Printed circuit board, 24... Tact switch, 25, 28... Connector, 29... Volume housing.

Claims (1)

[Claims for Utility Model Registration] A panel main body having a concave portion, an inner panel provided with a plurality of controls on its surface and having a shape in which a peripheral wall portion fits into the concave portion of the panel main body, and on the back side of the inner panel. a printed circuit board that is mounted and constitutes a wiring circuit or a control circuit corresponding to each of the operating elements, and the recessed part of the panel main body is provided with locking parts with a plurality of elongated holes at intervals around the recessed part of the panel body; an opening is provided in the bottom surface, and a plurality of hook-shaped locking portions are provided protruding from the lower edge of the peripheral wall portion of the inner panel to fit and engage with each locking portion of the panel main body, and the inner panel is fitted into the recess of the panel main body, each of the locking parts protruding from the lower edge of the peripheral wall is engaged with each of the locking parts formed around the recess of the panel main body, and the print is attached. An operation panel for an electronic device, characterized in that the substrate is connected to another electric circuit board or a power supply circuit provided in the panel body through an opening provided in the bottom of the recess.