JPH10190188A - Electronic component mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate installation of an operation panel and the like in electronic equipment and reduce cost. SOLUTION: A sheet board 1 is formed of an elastic resin sheet 11 and a flexible board 12. Dome-shaped swelled portions 13, movable contacts 14, upper projected portions 15 as lens bodies, and lower projected portions 18 for positioning, are formed on the resin sheet 11. Fixed contacts 16 corresponding to the movable contacts 14 and fitting holes corresponding to the lower projected portions 18 are formed on the flexible board 12, and LED's 17 corresponding to the upper projected portions 15 are bonded to the flexible board 12. Membrane switches 10 are composed of the swelled portions 13, movable contacts 14 and fixed contacts 16. Operators are placed on the membrane switches 10. An operation panel is placed on the top of the upper projected portions 15, and the light of the LED's 17 is focused at the upper projected portions 15 to light the LED's for indication. The resin sheet 11 and the flexible board 12 are positioned by means of the lower projected portions 18 and the fitting holes. Positional deviation of the LED's 17 is absorbed by means of the upper projected portions 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting technique around a board and electronic components disposed in an operation panel of an electronic device, and relates to a resin mounted on the board so as to cover the electronic components on the board. The present invention relates to an electronic component mounting structure provided with a sheet made of metal.

[0002]

2. Description of the Related Art Conventionally, as an example of an operation panel of an electronic apparatus, there is an example of a keyboard-type electronic musical instrument disclosed in Japanese Utility Model Publication No. 4-14795. This operation panel is an operation panel for electronic equipment of various specifications in which the number and arrangement of operators are different by changing only the inner panel by fitting the inner panel into the recess of the panel body to form the entire panel. Is obtained. However, in this type of conventional operation panel, there is a problem that it takes time and effort to incorporate electronic components and other members into the panel together with the substrate, resulting in an increase in cost. Further, it is required to reduce the cost of the electronic component itself.

For example, in the operation panel of Japanese Utility Model Publication No. 4-14795, a lens for guiding the light of the LED to the surface is disposed on the inner panel, but the positional relationship between the lens and the LED has a high precision. Since it is required, it takes time to install. When a plurality of pairs of a lens and an LED are provided, the opposing distance between the lower end of the lens and the LED tends to vary, and the brightness of the lens on the panel surface is slightly different.
This also causes variations between products or between different displays in the same panel. That is,
Although it is necessary to increase the accuracy at the time of assembling, there is a problem that the assembling time is required and the cost is increased.

[0004] In addition, there is a demand for obtaining inexpensive products while maintaining quality by reducing costs for electronic parts and other members.

By the way, as disclosed in the publication "Nikkei Mechanical 1981.5.11 (pages 110, 111)", a switch device having a resin sheet on a substrate has been developed. This type of switch device is
Originally, it is intended for dustproofness, waterproofness, and flexibility, and at present, the resin sheet only has a function of covering the surface. In addition, the membrane switch shown in the publication ((d) on page 110) can be constructed simply by forming a contact between the substrate and the resin sheet, so that the structure can be simplified and the cost can be reduced. Can be.

[0006]

According to the present invention, a resin sheet is provided on a substrate, and the resin sheet is used to simplify installation and reduce costs for electronic parts and other members. Another object of the present invention is to reduce the cost of an operation panel or the like of an electronic device.

[0007]

According to a first aspect of the present invention, there is provided an electronic component mounting structure, comprising: a substrate on which an electronic component is mounted; and an elastic component mounted on the substrate so as to cover the electronic component. Electronic component mounting structure with a resin sheet
A plurality of light emitting elements are mounted and fixed on the substrate as the electronic component, and the resin sheet has a plurality of protrusions each of which wraps the light emitting elements on the light emitting element, other than the protrusions. The projection is provided integrally with the flat portion, which is a substrate facing portion, and at least the top of the projection is a light-transmitting lens element for the light emitting element.

According to the electronic component mounting structure according to the first aspect of the present invention, since the plurality of lens bodies are integrated using the resin sheet, the cost of the lens bodies can be reduced. Can be. Further, by merely covering the plurality of lens bodies (projections) on the corresponding light emitting elements, the positioning between the resin sheet and the substrate on which the light emitting elements are mounted and fixed can be easily performed, and the assembling work can be simplified. . Especially,
Since the resin sheet has elasticity, the lens body also has elasticity, and a plurality of light emitting elements juxtaposed on the substrate are slightly shifted from a predetermined position with respect to the substrate surface direction at the time of soldering or applying an adhesive. Even if they are displaced, the error can be absorbed by the elasticity of the lens body.

Further, when an operation panel having a fitting hole for fitting the top of the lens body is provided on the projecting side of the lens body (projection), even a slight distortion or twist is caused in the substrate or the operation panel or both. In some cases, for example, the position of the light emitting element of the board and the lens body overlaid on the board and the fitting hole of the operation panel with respect to the board surface direction may be slightly different. Further, the facing distance between the substrate and the operation panel may be slightly different. Even in such a case,
Due to the elasticity of the lens body, the top of the lens body slightly moves in accordance with the fitting hole of the operation panel for displacement in the direction of the substrate, and slightly compresses when the distance is reduced. This lens body also serves as a buffer between the substrate or the light emitting element and the operation panel, since the twisted portion can be deformed as such. Therefore, an error in the facing distance between the substrate and the operation panel can be absorbed.

[0010] Further, since the lens body is put on the light emitting element as a buffer between the light emitting element and the operation panel, the distance between each lens body and the light emitting element becomes uniform.

According to a second aspect of the present invention, there is provided an electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet which has elasticity and is mounted on the substrate so as to cover the electronic component. In the electronic component mounting structure provided, the resin sheet has an instantaneous elastic recovery force, and fixed contacts formed on the resin sheet side of the substrate and a portion of the resin sheet facing the fixed contacts. A membrane switch is formed by the formed movable contacts, and a light emitting element is provided and fixed as the electronic component on the substrate, and the resin sheet is formed by wrapping the light emitting element on the light emitting element. The protrusion is provided integrally with the flat portion, protruding from a flat portion that is a substrate facing portion other than the protrusion, and at least the top of the protrusion serves as a lens body for the light emitting element having translucency. That And butterflies.

According to the electronic component mounting structure according to the second aspect of the present invention, since the resin sheet is shared by the membrane switch and the lens body, the cost of the membrane switch and the lens body can be reduced. Can be.
Further, since the membrane switch and the lens body can be incorporated at one time, the assembling work is simplified. Furthermore, since the lens body uses a resin sheet constituting the membrane switch, the lens body itself has elasticity. Claim 1 having this elasticity
As described in the description of the operation according to the above, an error in the facing distance between the substrate and the operation panel can be absorbed by the lens body.

The instantaneous elastic recovery force of the resin sheet refers to the state of the resin sheet before the stress is applied when the stress applied to the resin sheet is released, such as the repulsive force of a leaf spring. The ability to recover instantaneously. Since the resin sheet according to claim 2 has an instantaneous elastic recovery force, the portion of the resin sheet forming the movable contact of the membrane switch is formed as a bulging portion bulging in a direction away from the substrate. When the bulging portion is pressed, the shape of the bulging portion is instantaneously deformed against the instantaneous elastic recovery force of the resin sheet, and when the pressing force is eliminated, the bulging portion is deformed by the instantaneous elastic recovery force of the resin sheet. Instantly recovers. Thereby, a snap feeling or a click feeling can be obtained with a simple configuration.

According to a third aspect of the present invention, there is provided an electronic component mounting structure, comprising: a substrate on which the electronic component is mounted; and a resin sheet mounted on the substrate so as to cover the electronic component. In the structure, a light emitting element is provided and fixed as the electronic component on the substrate, and a plurality of fitting holes are formed, and the resin sheet has an upper protrusion that wraps the light emitting element over the light emitting element. Part, and a plurality of lower protrusions respectively fitted in the fitting holes project from a flat part which is a substrate facing part other than the upper protrusion and the lower protrusion, and are respectively integrally formed with the flat part. At least the top of the upper projection is provided as a light-transmitting light-emitting element lens body.

According to the electronic component mounting structure according to the third aspect, the positioning between the resin sheet and the substrate can be performed by fitting the lower projections corresponding to the plurality of fitting holes. In addition to the ease of the positioning and the ease of the positioning, since the plurality of positioning lower protrusions and the lens body are integrated with a resin sheet, the assembling work is simplified. Further, the cost of the positioning member (lower projection) and the lens body can be reduced.

If a resin sheet having elasticity is used, even if the position of the fitting hole formed in the substrate and the position of the lower protrusion fitted in the fitting hole are slightly different, The lower protrusion can be compressed in the direction perpendicular to the substrate surface or deformed in the direction of the substrate surface by its elastic action, so that the lower protrusion also serves as a cushioning material between the substrate and the resin sheet. An error in the position between the hole and the lower protrusion can be absorbed. Also, the lower protruding portion has a conical shape (for example, a conical shape),
The self-aligning action can be obtained by making the corresponding fitting holes smaller than the conical root.

According to a fourth aspect of the present invention, there is provided an electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and mounted on the substrate so as to cover the electronic component. In the electronic component mounting structure provided, the resin sheet has an instantaneous elastic recovery force, and fixed contacts formed on the resin sheet side of the substrate and a portion of the resin sheet facing the fixed contacts. A membrane switch is constituted by the formed movable contacts, a light emitting element is provided and fixed as the electronic component on the substrate, and a plurality of fitting holes are formed. The resin sheet includes the light emitting element. An upper protrusion that wraps the upper protrusion, and a plurality of lower protrusions respectively fitted in the fitting holes are arranged on a flat portion that is a substrate facing portion other than the upper protrusion and the lower protrusion. Protrude and integrate with the flat part Provided, wherein at least the upper projection tops are a lens body for the light-emitting element having a light-transmitting property.

According to the electronic component mounting structure of the fourth aspect configured as described above, in the same manner as described in the operation of the third aspect, the lower projections corresponding to the plurality of fitting holes are provided. The positioning between the resin sheet and the substrate is facilitated. Further, since the resin sheet is shared by the membrane switch, the lens body, and the plurality of lower protrusions, these can be incorporated at one time, and the assembling work is facilitated, and the membrane switch, the positioning member ( The cost of the lower projection and the lens body can be reduced.

Further, since the lens body and the lower protruding portion use a resin sheet constituting the membrane switch, the lens body and the lower protruding portion themselves have elasticity.
Therefore, the lens body also functions as a buffer between the substrate or the light emitting element and the operation panel, as described in the description of the operation according to claim 1, and reduces the error in the facing distance between the substrate and the operation panel. Can be absorbed. Further, in the case of the lower protruding portion, similarly to the description of the operation according to claim 3, it is possible to absorb an error in the position between the fitting hole and the lower protruding portion. The self-aligning action can be obtained by the shape of the corresponding fitting hole.

Since the resin sheet has an instantaneous elastic recovery force, the movable contact portion of the membrane switch is formed as a bulging portion similar to the above, as described in the description of the operation according to the second aspect. A snap feeling or a click feeling can be obtained with a simple configuration.

According to a fifth aspect of the present invention, there is provided an electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet mounted on the substrate so as to have elasticity and cover the electronic component. In the electronic component mounting structure provided, the resin sheet has an instantaneous elastic recovery force, and fixed contacts formed on the resin sheet side of the substrate and a portion of the resin sheet facing the fixed contacts. A membrane switch is configured by the formed movable contact, a fitting hole is formed in the substrate, and a lower protrusion fitted into the fitting hole is formed on the resin sheet, except for the lower protrusion. And is provided integrally with and protruding from the flat portion which is the substrate facing portion.

According to the electronic component mounting structure of the fifth aspect configured as described above, the lower protrusion can be, for example, a lens body that guides light of a light emitting element. Further, since the resin sheet is shared by the membrane switch and the lower protrusion, the membrane switch and the lens body can be assembled at one time, so that the assembling work becomes easy and the membrane switch and the lens body can be assembled. Cost can be reduced. In addition, since the resin sheet has an instantaneous elastic recovery force, a snap feeling or a click feeling can be obtained with a simple configuration as described in the description of the operation according to claim 2.

By providing a plurality of lower protrusions and a plurality of fitting holes, a positioning member for positioning the resin sheet and the substrate can be provided. The lower protrusion is formed by using a resin sheet constituting a membrane switch. Therefore, the elastic member has elasticity, and the position error between the fitting hole and the lower protruding portion can be absorbed in the same manner as described in the operation according to the third aspect.

According to a sixth aspect of the present invention, there is provided an electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet mounted on the substrate so as to have elasticity and cover the electronic component. In the electronic component mounting structure provided, the resin sheet has an instantaneous elastic recovery force, and fixed contacts formed on the resin sheet side of the substrate and a portion of the resin sheet facing the fixed contacts. A membrane switch is constituted by the formed movable contact, a light emitting element is provided and fixed as the electronic component on the substrate, and a fitting hole is formed on the substrate. An upper projection that wraps the upper projection and a lower projection that fits into the fitting hole project from a flat portion that is a substrate facing portion other than the upper projection and the lower projection. Each part is provided integrally with the Characterized in that the upper projection tops are a lens body for the light-emitting element having a light-transmitting property.

According to the electronic component mounting structure according to the sixth aspect, the lower protruding portion can be a lens body for guiding the light of another light emitting element in the same manner as the upper protruding portion. The upper projection allows light to be emitted on the upper surface side of the substrate, and the lower projection allows light to be emitted on the side or bottom of the substrate, so that a complicated lens body can be easily formed. In addition, since the resin sheet of the membrane switch is shared by the upper and lower protrusions, the membrane switch and the lens body can be assembled at one time, so that the assembling work is simplified, and the membrane switch, the lens body, etc. Cost can be reduced.

Since the lens body and the lower projection have elasticity, the lens body also functions as a cushioning material as described in the operation of the first aspect. The error of the facing distance can be absorbed. Further, even if there is a slight displacement between the light emitting element and the fitting hole formed in the substrate, the lens body and the lower protrusion can be mutually deformed in the direction of the substrate surface. Can be.

Further, since the resin sheet has an instantaneous elastic recovery force, a snap feeling or a click feeling can be obtained with a simple structure as described in the operation according to the second aspect.

By providing a plurality of lower projections and fitting holes, a positioning member for the resin sheet and the substrate can be formed as described in the description of the operation according to the third aspect. The projection has elasticity, and can absorb an error in the position between the fitting hole and the lower projection.

[0029]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of an electronic musical instrument to which the present invention is applied. This electronic musical instrument includes a sheet substrate 1, an operator mat 2, an upper case 3, a lower case 4, and a keyboard 5. The upper case 3 includes an operation panel 3a in which an operation element through-hole 31 for arranging the operation elements of various switches, a display hole (not shown) for lighting an LED, and the like, and a rectangular keyboard opening. 3b.

As described later, operators of various switches are formed on the operator mat 2. The operator mat 2 of this embodiment is divided into an A portion and a B portion. Keyboard 5
Is formed by integrally assembling a white key and a black key into a frame, and a key actuator 51 for opening and closing a key switch in conjunction with a key operation is formed below each key.

The sheet substrate 1 is one to which the electronic component mounting structure of the present invention is applied. This sheet substrate 1 is A, B, C
Are formed in a flexible sheet shape, and a membrane switch corresponding to the operation element of the operation element mat 2 and an LED (light emitting element) for lighting display are provided in the A section and the B section. In this embodiment, a membrane switch as a key switch corresponding to the keyboard 5 is provided in the C section.

The lower case 4 has a raised portion 4 whose inner bottom is raised corresponding to each of the portions A and B of the sheet substrate 1.
a, 4b, and the inside of the raised portion 4a is used for a battery case or the like by opening and closing the back surface thereof. A groove 41 is formed at a position corresponding to the portion C of the sheet substrate 1, and a felt or rubber or the like for absorbing the stroke of the key actuator 51 when the keyboard 5 is pressed is formed in the groove 41. A cushioning material 42 is provided. Further, a boss 43 for fixing the upper case 3 is formed on the inner surface of the side of the lower case 4.

In the assembled state, the operation panel 3 of the upper case 3
Sections A and B of the operator control mat 2 are disposed on the back side of section a, sections A and B of the sheet substrate 1 are disposed on the back side, and raised bottom sections 4a and 4b of the lower case 4 are disposed on the rear side. Is done. Further, the keyboard 5 is inserted into the keyboard opening 3b of the upper case 3.
Is disposed on the back surface of the keyboard 5, the C portion of the sheet substrate 1 is disposed, and further, on the back surface of the C portion of the sheet substrate 1, the groove portion 41 and the buffer material 42 of the lower case 4 are disposed. .

Next, details of each section will be described. 2 is a partial perspective view of the controller mat 2, FIG. 3 is a partial perspective view of the sheet substrate 1, FIG. 2 is a part (a) of FIG. 1, and FIG. 3 is a part (b) of FIG. 2 and the portion of FIG. 2 overlaps the portion of FIG. FIG. 4 is a cross-sectional view of each part in an assembled state. FIG. 4A is a cross-sectional view taken along line AA in FIG.
FIG. 4B is a sectional view taken along line BB of FIG. 3, and FIG. 4C is a sectional view taken along line CC of FIG.

As shown in FIG. 2, the operation member mat 2 is formed in a substantially sheet shape by an elastic member such as polyurethane rubber, and includes a plurality of operation members 2 corresponding to various switches.
1 are integrally formed. As shown in FIG. 4A, a pressing portion 21a is formed at the center of the back surface of the operation member 21 and protrudes downward to press a membrane switch described later. In addition, each operation element 2 is provided on the operation element mat 2.
A lens body insertion hole 22 corresponding to No. 1 is formed. The operators 21 are grouped for each predetermined set of operators, for example, a plurality of operators 21 constituting one digital volume shown in FIG. 2C, and the group of operators 21 is a plate-like. The support portion 23 is made common, and a spacer 24 thicker than the support portion 23 is formed around the back surface of the support portion 23 as shown by a broken line.

Note that a thin portion 25 is formed at the edge of the spacer 24 so as to be divided into groups, and an arbitrary group can be cut out by the thin portion 25. As a result, an unnecessary part (group) of a certain model is cut out and used for another part of the same model, for example, used for a part B of the controller mat 2 shown in FIG. Since it can be used as a part of the mat, the cost of the controller mat 2 can be reduced.

That is, especially in an electronic musical instrument, it is necessary to arrange a large number of switches such as a tone switch, a digital volume, and an up / down switch on the operation panel. Different. For example, a high-end model has a large number of timbres, so the number of tone switches increases, and a large number of functions also increase the number of digital volumes, up-down switches, and the like. On the other hand, inexpensive models have fewer switches.

However, even if the number of switches is different as described above, it is effective to reduce the design cost by making similar switches the same design between different models. Therefore, by appropriately designing the overall shape of the controller mat to be manufactured in consideration of the model and lot of the electronic musical instrument, it is possible to apply the controller controller to the various types of electronic musical instruments with a minimum number of controller mats. In addition, the manufacturing cost can be reduced.

As shown in FIG. 3, the sheet substrate 1 is composed of two sheets, a resin sheet 11 and a flexible substrate 12. The resin sheet 11 is formed by molding polystyrene, polyester, ABS resin, or the like into a sheet shape using a mold, and has elasticity and instantaneous elastic recovery force as described in the section of the operation. On the resin sheet 11, a thin dome-shaped bulging portion 13 bulging to the opposite side of the flexible substrate 12 is formed as a movable portion of the membrane switch 10, and an inner surface of the bulging portion 13 is formed. The movable contact 14 is formed at the center of the surface (a) by printing a conductive member or the like.

The resin sheet 11 has a hollow upper projection 15 having a substantially conical shape and a rounded tip as a lens body corresponding to the membrane switch 10. 3 corresponds to one digital volume in which a plurality of switches are arranged, and in each switch, the bulging portion 13 and the upper protruding portion 15 are paired. As described above, the upper protruding portion 15 is paired with the bulging portion 13 for a switch requiring LED display.

On the flexible substrate 12, fixed contacts 16 of the membrane switch 10 are formed at positions corresponding to the bulging portions 13 of the resin sheet 11, and the upper projecting portions 15 are formed.
Are mounted and fixed. Although only one set of the fixed contact 16 and the LED 17 is shown in FIG. 3, a fixed contact and an LED are provided corresponding to each of the bulging portion 13 and the upper protrusion 15.

The front and rear edges of the resin sheet 11 are formed with lower projections 18 protruding toward the flexible substrate 12, and the flexible substrate 12 has fitting holes 19 (see FIG. 3) corresponding to the lower projections 18. 4 (B)).
An engagement hole 44 is formed in the raised bottom 4a of the lower case 4 at a position corresponding to the lower projection 18 and the fitting hole 19.

With the above configuration, an assembled state as shown in FIG. 4 is obtained. That is, as shown in FIG. 4A, the operator 21 of the operator mat 2 is inserted into the operator through hole 31 of the operation panel 3a of the upper case 3. The upper protrusion 15 of the resin sheet 11 is the lens body insertion hole 2 of the controller mat 2.
2 through the display hole 32 of the operation panel 3a,
The LE on the flexible substrate 12 is
D17 is provided. The bulging portion 13 of the resin sheet 11 is disposed below the pressing portion 21a of the operation element 21,
The fixed contact 16 on the flexible substrate 12 is arranged inside the bulging portion 13 to constitute the membrane switch 10. The upper case 3 and the lower case 4 are boss 43
(See FIG. 1), the operation mat 2 and the resin sheet 11 and the flexible substrate 1
2 is sandwiched and fixed between the operation panel 3a and the raised bottom 4a of the lower case 4.

As shown in FIG. 4B, the lower projecting portion 18 of the resin sheet 11 is fitted into the fitting hole 19 of the flexible substrate 12, and The projection 18 is engaged with the engagement hole 44 of the raised bottom 4a, and is fixed by the operation panel 3a and the raised bottom 4a.

FIG. 4C shows the sheet substrate 1 as a key switch.
3 shows a structure of a membrane switch formed in a portion C of the present embodiment. The membrane switch includes a bulging portion 13 formed in a resin sheet 11, a movable contact 14 formed inside the bulging portion 13, and And fixed contacts 16 formed on the flexible substrate 12. Below the membrane switch, a groove 41 formed in the lower case 4 and a buffer member 42 embedded therein are arranged. Then, a key actuator 51 is arranged on the membrane switch. The bulging portion 13 of the membrane switch does not include a movable portion having a flat portion like the bulging portion 13 of the membrane switch 10 corresponding to the operating element 21 and has the same thickness as the resin sheet 11 as a whole. It has become.

In the above assembled state, in FIG. 4A, when the operating member 21 is pressed, the support portion 23 is slightly bent, and the pressing portion 21a presses the bulging portion 13 of the membrane switch 10, and this bulging portion is pressed. The movable contact 14 of the projection 13 contacts the fixed contact 16 and the membrane switch 10 is turned on. When the membrane switch 10 is turned on, the corresponding L
The ED 17 is turned on, the light is condensed by the upper protruding portion 15 as a lens body, and its tip mainly emits light, and the LED is displayed.

In FIG. 4C, when the bulge portion 13 of the membrane switch is depressed by the key actuator 51 by operating the keyboard 5, the movable contact 14 comes into contact with the fixed contact 16 and the membrane switch (key switch) is pressed. ) Is turned on, and key depression is detected. At this time, even if the key actuator 51 further depresses the membrane switch by the key pressing force, the stroke is absorbed by the buffer member 42,
It also improves the key press touch and also prevents the deterioration of the membrane switch.

FIG. 5 is a view for explaining the function of the upper projection 15 as a lens body. Light emitted from the LED 17 is reflected by the inner slope of the upper projection 15 or by reflection inside the resin layer. , Are collected near the top 15a of the upper projection 15.
Further, when a graining process or the like is performed at the position indicated by the two-dot chain line, irregular reflection inside the resin layer can be made, and a part thereof can be collected near the top 15a. As a result, the top 15a of the upper projection 15 emits light through the display hole 32 of the operation panel 3a, and a light-on display with good visibility can be obtained. The top 15a of the upper projection 15 is made completely transparent by mirror finishing of the mold at the time of molding. However, any shape may be used as long as the top 15a transmits light.

The assembling work of the electronic musical instrument of this embodiment is performed as follows. First, the upper case 3 is turned upside down, the keyboard 5 is turned upside down, and the keyboard 5 is mounted and fixed in the opening 3b for the keyboard, and the operator mat 2 is mounted inside the operation panel 3a of the upper case 3 upside down. At this time, since the through hole 31 for the operator corresponding to the operator 21 is formed in the operation panel 3a, the operator mat 2 can be easily positioned and mounted.

Next, the resin sheet 11 is turned upside down, and the upper protruding portion 15 is inserted into the lens body insertion hole 22 of the operation element mat 2, and the resin sheet 11 is connected to the rear surface of the operation element mat 2 and the keyboard 5. Attach to the back. At this time, the tip of the upper protrusion 15 is also inserted into the display hole 32 of the operation panel 3a. However, since the upper protrusion 15 has elasticity, even if there is a slight displacement in the display hole 32, it is easy. Can be inserted.

Next, the flexible substrate 12 is turned over, and the fitting holes 19 formed in the flexible substrate 12 are formed.
Is fitted to the lower projecting portion 18 of the resin sheet 11 (which is facing upward at this time), and at the same time, the LED 17 is fitted into the upper projecting portion 15 of the resin sheet 11 and mounted. At this time, even if the LED 17 is slightly displaced,
Since 5 has elasticity, its position error can be absorbed. At this time, since the upper protrusion 15 can be brought into close contact with the LED 17 due to its elasticity, the distance between the upper protrusion 15 and the LED 17 as the lens body should be substantially uniform in any pair. This makes it easy to make the brightness of the lit display uniform between products and within the same panel as a whole. Further, the plurality of lower protrusions 18 of the resin sheet 11 and the corresponding fitting holes 1 of the flexible substrate 12 are provided.
9, the resin sheet 11 and the flexible substrate 12
Positioning can be easily performed. Then, finally, the lower case 4 is turned upside down to cover the flexible substrate 12 (a part of the sheet substrate 1), and a screw is passed through the boss 44 and screwed to the upper case 3.

In the above example, the resin sheet 11 is mounted on the back of the controller mat 2 and the keyboard 5, and then the flexible substrate 12 is mounted thereon. And the flexible substrate 12 may be separately assembled to form the integrated sheet substrate 1, and the sheet substrate 1 may be mounted on the back of the controller mat 2 and the keyboard 5. In this case, the resin sheet 11 and the flexible substrate 12 may be temporarily fixed.

As described above, the plurality of upper protruding portions 15, the membrane switch 10, and the lower protruding portion 18 as the lens body are integrally formed by the resin sheet 11. The operation is simplified, and the costs of the upper projection 15, the membrane switch 10, the lower projection 18, and the like can be reduced. Further, since the plurality of LEDs 17 are covered with the corresponding plurality of upper protrusions 15, the positioning of the lens body and the flexible substrate 12 is facilitated as an effect of the first aspect. Further, the plurality of lower protrusions 18 are formed in the resin sheet 11 and the corresponding fitting holes 19 are formed in the flexible substrate 12.
As an effect of 4, the positioning between the resin sheet 11 and the flexible substrate 12 is facilitated.

In order to obtain such an effect, the shape of the bulging portion 13 of the membrane switch 10 is not limited to the above embodiment. For example, a portion of the resin sheet 11 to be a membrane switch (movable contact portion)
It may be a planar membrane switch in which the space between the and the portion of the flexible substrate 12 (fixed contact portion) opposed thereto is simply separated by a spacer or the like.

Further, since the upper projection 15 and the lower projection 18 have elasticity, an advantage of the first aspect is that the lens body has an LED.
17 (light emitting element) can be absorbed, and as an effect of the first, second, fourth, and sixth aspects, the position error between the operation panel 3a and the flexible substrate 12 can be absorbed by the lens body. Further, as an effect of the fourth aspect, the position error of the fitting hole 19 can be absorbed by the lower protrusion 18. Further, as an effect of the sixth aspect, the LED 17 and the fitting hole 1 are formed by the lens body and the lower protrusion 18.
9 can be absorbed.

FIG. 6 is a view for explaining the structure and operation of the membrane switch 10 in the embodiment. As shown in FIG. 6A, the bulging portion 13 has a dome-shaped appearance,
It is composed of a thick portion 13a having an inner surface flattened, and a spherical shell-shaped rising portion 13b curved from the periphery of the thick portion 13a to the flat portion of the resin sheet 11. The movable contact 14 is formed on a flat portion of the thick portion 13a. Since the bulging portion 13 has an instantaneous elastic recovery force, when the operating element 21 is operated, a snap feeling or a click feeling is obtained due to the buckling phenomenon of the rising portion 13b.

That is, as shown in FIG.
When the pressing portion 21a pushes down the thick portion 13a against the elasticity of the rising portion 13b, the rising portion 13b is deformed, and the bent portion of the rising portion 13b is slightly extended in the outer peripheral direction. When the thick portion 13a is further pushed down, the rising portion 13
Since the bent portion b returns slightly inward, the force when pressing down the thick portion 13a with the pressing portion 21a is as shown in FIG.
When the state is changed from (B) to FIG. 6 (C), a smaller force is required than when the state is changed from FIG. 6 (A) to FIG. 6 (B). Therefore, a snap feeling and a click feeling can be obtained at a moment exceeding the state of FIG. When the operator 21 is released to release the thick portion 13a, the instantaneous elastic recovery force of the rising portion 13b causes the state of FIG. 6 (C) to return to the state of FIG. 6 (A).

Thick portion 1 having flat portion as in this embodiment
When the structure of 3a is adopted, the flat portion of the thick portion 13a keeps the movable contact 14 flat even if the pushing angle of the pressing portion 21a of the operating element 21 changes, so that the movable contact 14 is securely connected to the fixed contact 16. The contact makes the switch operation stable. In addition, since the buckling phenomenon surely occurs at the rising portion 13b, a stable snap feeling and a click feeling can be obtained.

As described above, since the bulging portion 13 has an instantaneous elastic recovery force, a snap feeling and a click feeling can be obtained by the membrane switch 10 as in the effects of the second and fourth to sixth aspects.

FIG. 7 is a sectional view showing another embodiment of the present invention. In each of the following embodiments, the same reference numerals are given to the same elements as those in the above embodiment, and the detailed description is omitted.
Corresponding elements have the same reference numerals with dashes added. In the embodiment shown in FIG. 7, a lower protrusion 18 'as a lens body is formed at the end of the resin sheet 11, and a fitting hole 19 is formed at a position of the flexible substrate 12 corresponding to the lower protrusion 18'. 'Is formed. The lower protrusion 1 is formed around the fitting hole 19 ′ on the back surface of the flexible substrate 12.
8 ′ is opposite to the end of the flexible substrate 12.
The ED 17 'is mounted and fixed.

The lower projection 18 'is substantially conical and has a circular end, and the end of the lower projection 18' on the resin sheet 11 is thicker than the LED 17 '. Also,
The end portion of the resin sheet 11 following the thick portion 18a 'of the lower projection 18' is formed as a thick portion 11a 'having substantially the same thickness as the thick portion 18a'. The resin sheet 11
The width of the thick portion 11a 'in the direction perpendicular to the drawing is
The width is approximately the same as the thickness of a '. A display hole 33 is formed in the side surface of the upper case 3 adjacent to the end surface 11b 'of the thick portion 11a'. Thereby, LE
The light emitted at D17 'enters the lower projection 18', and internal reflection is repeated at the lower projection 18 'to increase the thickness of the thick portion 11a'.
To emit light at the end face 11b '. Therefore, this L
The display of the ED 17 ′ can be visually recognized from the display hole 33. Note that the upper projection 15 operates in the same manner as described above.

In this embodiment, each of the upper projection 15 and the lower projection 18 'may be singular.
And the lower protrusion 18 'are shared by one resin sheet 11, as described in the operation description according to claim 6,
A complicated lens body can be easily configured.

FIG. 8 is a cross-sectional view showing another embodiment. An operating member 21 'of this embodiment has a hinge portion 2 having a wavy cross section around its periphery.
3 'is formed. In the above-described embodiment, the operating member 21 can be pressed by slightly bending the support portion 23. However, in this embodiment, the operation is performed by deforming the hinge portion 23'. The child 21 'can be pressed. That is, in this embodiment, when the operator 21 'is pressed, only the hinge portion 23' around the operator 21 'is deformed. No effect on the parts. In addition, since the hinge portion 23 'causes a buckling phenomenon due to the operation of the operation element 21', a snap feeling and a click feeling can be further obtained in addition to the action of the bulging portion 13 '.

In this embodiment, the bulging portion 13 'of the membrane switch 10' is different from the bulging portion 13 of the previous embodiment in the shape of a dome having the same thickness as the resin sheet 11. Even in such a shape, since the bulging portion 13 'has an instantaneous elastic recovery force, a snap feeling and a clicking feeling can be obtained by the buckling phenomenon of the bulging portion 13'. Further, the upper protruding portion 15 'of this embodiment has the same shape as the bulging portion 13', and it is possible to make the mold for forming the bulging portion 13 'and the upper protruding portion 15' the same shape. it can. In this embodiment, a transparent resin lens 33 is formed in the display hole 32 'of the operation panel 3a by two-color molding.

FIG. 9 is an exploded perspective view showing another embodiment. In this embodiment, the flexible substrate 1 of each of the above embodiments is used.
A rigid substrate 12 ′ is used in place of 2, and a resin sheet 11 is formed with a bulged portion 13 of a membrane switch, an upper protrusion 15 as a lens body, and a plurality of lower protrusions 18 for positioning. The rigid board 12 'is formed with a fitting hole 19' corresponding to the lower projection 18, so that the same effect as in the above embodiment can be obtained. Thus, the substrate may be a rigid substrate.

Although the above embodiment has been described by taking an electronic musical instrument as an example, the electronic component mounting structure of the present invention can be applied to other devices.

[0067]

As described above, according to the first aspect of the present invention,
According to the electronic component mounting structure, the plurality of lens bodies are integrated using the resin sheet, so that the cost can be reduced. Further, the positioning between the resin sheet and the substrate can be facilitated, and the assembling work can be simplified. Also,
Since the lens body has elasticity, an error in the position of the light emitting element can be absorbed. Further, even when the operation panel is provided, the lens body also functions as a buffer due to its elastic action, so that an error in the distance between the substrate and the operation panel can be absorbed.

According to the electronic component mounting structure of the present invention, since the resin sheet is shared by the membrane switch and the lens body, the cost can be reduced and the assembling work can be simplified. . Further, since the lens body has elasticity, the lens body can absorb an error in the facing distance between the substrate and the operation panel, as in the first aspect. In addition, since the resin sheet has an instantaneous elastic recovery force, a membrane switch having a snap feeling or a click feeling can be obtained with a simple configuration.

According to the electronic component mounting structure of the third aspect of the present invention, the positioning between the resin sheet and the substrate is achieved by fitting the lower protrusion of the resin sheet into the plurality of fitting holes formed in the substrate. In addition, since the positioning lower projection and the lens body are integrated with a resin sheet, the assembling work is simplified. Further, cost can be reduced.

According to the electronic component mounting structure of the fourth aspect of the present invention, similarly to the third aspect, the positioning of the resin sheet and the substrate can be easily performed by the lower protrusions corresponding to the plurality of fitting holes.
In addition, since the resin sheet is shared by the membrane switch, the lens body, and the plurality of lower protrusions, these can be incorporated at a time, facilitating the assembly work, and reducing the cost of each part. it can. Further, since the lens body and the lower protrusion itself have elasticity, the lens body also serves as a buffer between the substrate or the light emitting element and the operation panel as in claim 1, and the substrate and the operation panel Can be absorbed.
Further, the lower protrusion can absorb a positional error between the fitting hole and the lower protrusion as in the third aspect. Further, since the resin sheet has an instantaneous elastic recovery force, it is possible to obtain a membrane switch having a snap feeling or a click feeling with a simple configuration, similarly to the second aspect.

According to the electronic component mounting structure of claim 5 of the present invention, the lower protruding portion can be a lens body for guiding the light of the light emitting element, and the resin sheet is formed by the membrane switch and the lower protruding portion. Since both are shared, the membrane switch and the lens body and the like can be incorporated at a time, so that the assembling work is facilitated and the cost of each part can be reduced. Further, since the resin sheet has an instantaneous elastic recovery force, it is possible to obtain a membrane switch having a snap feeling or a click feeling with a simple configuration, similarly to the second aspect.

According to the electronic component mounting structure of the present invention, the lower protruding portion can be a lens body for guiding the light of another light-emitting element in the same manner as the upper protruding portion. The body can be easily constructed. In addition, the resin sheet for the membrane switch is shared between the upper and lower protruding parts, so that the membrane switch and lens body can be assembled at once, simplifying the assembling work and reducing the cost of each part. can do. Further, since the lens body and the lower protruding portion themselves have elasticity, the lens body also functions as a cushioning material, as in the first aspect, and can absorb an error in the facing distance between the substrate and the operation panel. Further, even if there is a slight displacement between the light emitting element and the fitting hole formed in the substrate, the displacement can be absorbed by the lens body and the lower protrusion. Further, since the resin sheet has an instantaneous elastic recovery force, a snap feeling or a click feeling can be obtained with a simple configuration as in the second aspect.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electronic musical instrument to which the present invention is applied.

FIG. 2 is a partial perspective view of an operator mat in the embodiment.

FIG. 3 is a partial perspective view of a sheet substrate in the embodiment.

FIG. 4 is a sectional view of each part in an assembled state in the embodiment.

FIG. 5 is a diagram for explaining the function of the upper projection as a lens body in the embodiment.

FIG. 6 is a diagram illustrating the structure and operation of the membrane switch in the embodiment.

FIG. 7 is a cross-sectional view showing another embodiment in which the lower projection has a lens body.

FIG. 8 is a cross-sectional view showing another embodiment of the structure of the controller mat and the upper protrusion.

FIG. 9 is an exploded perspective view showing another embodiment using a hard substrate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sheet board, 3a ... Operation panel, 10 ... Membrane switch, 11 ... Resin sheet, 12 ... Flexible board, 13 ... Swelling part, 14 ... Movable contact, 15 ... Top projection, 1
6: fixed contact, 17: LED, 18: lower protrusion, 19: fitting hole.

Claims (6)

[Claims] 1. An electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and mounted on the substrate so as to cover the electronic component. A plurality of light emitting elements are provided and fixed as the electronic component, and the resin sheet has a plurality of protrusions each of which wraps the light emitting elements on the substrate, other than the protrusions. An electronic component mounting structure characterized in that the projection is provided integrally with the flat portion so as to protrude from the flat portion, and at least the top of the projection is a light-transmitting lens body for the light emitting element. 2. An electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and placed on the substrate so as to cover the electronic component. Has instantaneous elastic recovery power,
Fixed contacts formed on the resin sheet side of the substrate,
A membrane switch is constituted by a movable contact formed on a portion of the resin sheet facing the fixed contact, and a light emitting element as the electronic component is disposed and fixed to the substrate, and the resin switch is attached to the resin sheet. Is provided on the light emitting element such that a projection for enclosing the projection is provided integrally with the flat portion, protruding from a flat portion which is a substrate facing portion other than the projection, and at least the top of the projection is transparent. An electronic component mounting structure, which is a lens body for the light emitting element having optical properties. 3. An electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet mounted on the substrate so as to cover the electronic component. The light emitting element is mounted and fixed, and a plurality of fitting holes are formed. The resin sheet is fitted into the upper projection and the fitting hole so as to cover the light emitting element. A plurality of lower protruding portions projecting from a flat portion which is a substrate facing portion other than the upper protruding portion and the lower protruding portion, and are provided integrally with the flat portions, respectively. An electronic component mounting structure, characterized in that the electronic component mounting structure is a lens body for the light emitting element having a property. 4. An electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and mounted on the substrate so as to cover the electronic component. Has instantaneous elastic recovery power,
Fixed contacts formed on the resin sheet side of the substrate,
A movable switch formed on a portion of the resin sheet opposed to the fixed contact forms a membrane switch. A light emitting element is provided and fixed as the electronic component on the substrate, and a plurality of fitting holes are formed. The resin sheet is formed with an upper protrusion that wraps the light emitting element over the light emitting element, and a plurality of lower protrusions respectively fitted in the fitting holes. Projecting to a flat portion which is a substrate facing portion other than the protrusion, provided integrally with the flat portion, and at least the top of the upper protrusion is a lens body for the light emitting element having a light transmitting property. Electronic component mounting structure characterized by the above. 5. An electronic component mounting structure comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and mounted on the substrate so as to cover the electronic component. Has instantaneous elastic recovery power,
Fixed contacts formed on the resin sheet side of the substrate,
A movable switch formed on a portion of the resin sheet opposed to the fixed contact constitutes a membrane switch, a fitting hole is formed in the substrate, and the resin sheet is fitted in the fitting hole. An electronic component mounting structure, wherein a lower protrusion to be combined is provided integrally with and protruding from a flat portion that is a substrate facing portion other than the lower protrusion. 6. An electronic component mounting structure, comprising: a substrate on which an electronic component is mounted; and a resin sheet having elasticity and mounted on the substrate so as to cover the electronic component. Has instantaneous elastic recovery power,
Fixed contacts formed on the resin sheet side of the substrate,
A membrane switch is constituted by a movable contact formed on a portion of the resin sheet opposed to the fixed contact. A light emitting element is provided and fixed as the electronic component on the substrate, and a fitting hole is formed on the substrate. An upper protrusion that wraps the light emitting element on the resin sheet, and a lower protrusion that fits into the fitting hole,
A lens for the light emitting element, which is provided integrally with the flat portion so as to protrude from a flat portion that is a substrate facing portion other than the upper protrusion and the lower protrusion, and at least the top of the upper protrusion has a light transmitting property; An electronic component mounting structure characterized by being a body.