JPH0580745A - Pedal disk for musical instrument - Google Patents

Abstract

PURPOSE: To provide a pedal board capable of reducing the number of parts and sound, more simply assembled and having long effective life. CONSTITUTION: Each pedal is clamped by a cylindrical pin fitted to the rear end part of the pedal and the base part of the pedal board. A guide pin 60 is clamped to the front end part of the pedal. The pin 60 is loosely engaged with a hole for restricting the lateral movement of the pin 60. When the pedal is depressed, the lower end part of the pin 60 drives an electric switch 68 consisting of an elastic material. The switch 68 is loaded on a printed circuit board 114 and provided with a small room 102 having a belt-like diaphragm 104 surrounded on the bottom by a diaphragm 110 loaded with a conductive member fitted to a supporting long band chip by a soft edge part. When the small room 102 is depressed by the pin 60, the conductive member short-circuits a contact part on the board 114. The tension and resiliency of the pedal board are applied by a fitting pin or a tension spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedal board for musical instruments, and more particularly to a mounting, guiding and switching mechanism for a pedal board in a pipe organ or an electronic organ.

[0002]

BACKGROUND OF THE INVENTION Organs typically have a pedal board which, in addition to the keyboard, comprises a plurality of pedals which are moved by the feet of a musician to produce additional musical tones. A conventional pedal board has a spring attached to each pedal key. The purpose of this spring is to return the pedal key to its normal position after the depression is released. The spring also provides a certain amount of resistance to pedal movement. Common springs are made of metal and can be of the coil, plate or compass type. The pedal key is attached at one end to the pivot end and is restricted at the other end by a guide comb.
The return spring can be attached at any point from the pivot end to the free end. Each pedal key actuates a switch or set of switches on the inside or outside of the pedal board. These switches can control air pressure, vacuum or current.

[0003]

There are various problems in the conventional pedal mechanism and switching device in the pedal board for the organ. Normally, the tension of the pedal spring for each pedal must be adjusted individually when the pedal board is assembled. This pedal key guide comb is relatively difficult to manufacture. The reason for this is that the spring does not prevent the lateral movement of the pedal key well, and occasionally both ends of the pedal key hit the inside of the elongated groove in the guide comb, producing an unwanted sound.

Coordination of various pedals with their respective switches is often a difficult problem. In addition, the deterioration of the components of such a pedal board occurs more rapidly than desired.

Therefore, it can be more easily assembled, reducing the number of parts, reducing noise, and more easily assembled,
There is a need for a pedal board that has a longer useful life than conventional pedal boards.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above problems and provides other advantages by a novel pedal mounting, guiding and switch mechanism. Each pedal key in the pedal board of the present invention (hereinafter simply referred to as a pedal for convenience) is attached at one end by a mounting pin attached to the pedal and the base assembly of the pedal board.
The mounting pin is preferably cylindrical and made of fiberglass, although it can be made of various other shapes and materials. The mounting pin is also fitted with an interference fit by inserting it into each hole at each end on both the pedal and the base. When the opposite end of the pedal is depressed, the mounting pin is bent to provide the elastic force needed to return to the normal position when the pedal is released from depression. The angle at which the mounting pin is mounted determines the pedal pull. The mounting pin contributes to laterally holding the pedal which is located as a result of the restoring force produced when twisted.

At the opposite end of the pedal, similarly,
The guide pin is attached to the pedal with an interference fit by inserting the upper end of the guide pin into the hole in the pedal at one end. The lower end on the opposite side of the guide pin is loosely fitted in a hole in the base of the pedal board. This mounting limits the lateral movement of the pedal. The lower end of this guide pin also
The pedal is connected to the switch by hitting and actuating an electric switch made of an elastic material that closes the electric circuit for the pedal. Thus, the elastic electrical switch acts as a pedal motion detector that produces an electrical signal corresponding to the pedal motion. A strip or ring of rubber or felt cushioning is provided to reduce noise when the pedal is pushed down to the limit, and
One or more felt washers are provided in the holes in the base to protect the electrical switch made of elastic material to reduce noise when excessive lateral movement occurs.

An electric switch made of elastic material comprises a bell-shaped elastic chamber having its diaphragm with a conductive member disposed at the lower end outside the diaphragm. The diaphragm is positioned relative to the contacts on the supporting circuit board. When the lower end of the pedal guide pin pushes the bell-shaped portion of the elastic electric switch downward, the force transmitted downward through the partition wall of the small chamber and the increased pressure inside the small chamber push the diaphragm downward and conduct electricity. The member short-circuits the contacts and closes each circuit. The bell shape of the elastic electrical switch allows the elastic electrical switch to be compressed to various amounts by the free end of the guide pin, and the range of movement of the guide pin is not critical. The electric switch made of an elastic material has an air path and is provided so as to be guided from below the diaphragm to the surge chamber, so that air is not trapped under the diaphragm so that the diaphragm does not prevent the contact portion from short-circuiting.

Accordingly, the basic object of the present invention is to provide a new and improved pedal board for musical instruments.

Another object of the present invention is to facilitate assembly,
An object is to provide a pedal board for musical instruments that reduces the number of parts.

Still another object of the present invention is to provide a pedal board for musical instruments which is quieter than the conventional pedal board.

A further object of the present invention is to provide a pedal board for musical instruments having a longer useful life than the conventional pedal board.

A basic feature of the present invention is the use of a mounting pin that positions the pedal in the pedal board, defines the pedal tension, limits lateral movement of the pedal, and provides a restoring force to the pedal.

Another feature of the present invention is that the elastic material of the elastic material provides a relatively wide tolerance for the range of motion of the pedal for closing the electrical circuit relative to the corresponding pedal and provides a relatively long useful life. The use of electrical switches.

Yet another feature of the present invention is that the pedal of the pedal board uses a guide pin for preventing lateral movement beyond a predetermined range and for activating the switch.

A further feature of the present invention is that the electrical switch of resilient material has a surge chamber that ensures that trapped air does not prevent the circuit from closing.

Yet another feature of the present invention is the use of tension on the movable member to adjust the tension of the pedal board.

[0018]

The foregoing and other objects, features and advantages of the present invention will be more readily understood by considering the following detailed description of the invention with reference to the accompanying drawings.

A typical prior art pedal board assembly is shown in FIG. A pedal 10, which is one of a plurality of pedals, is provided on a spring rail 14 by a metal flat spring 12. Generally, an organ has a pedal for performing a semitone raising performance, in other words, a sharp pedal, and a pedal for performing a standard performance, in other words, a natural pedal. The pedal 10 shown in FIG. 1 is a sharp pedal. For the purposes of this description, the end of the pedal 10 at which the pedal 10 is mounted relative to the spring rail 14 is referred to as the rear end 18 and the opposite end is the front end. Called 20. A fulcrum 22 is also provided on the spring rail 14 at the rear end 18. The pedal 10 is generally made of wood. The flat spring 12 is attached to the pedal 10 by a pair of wood screws 24, and wood screws 26, 28.
Mounted on the spring rail 14 by. In the normal position, the pedal 10 rests against the upper shock absorber 36. The tension with which the pedal 10 resists downward forces is adjusted by tightening or loosening wood screws 26, 28.

The front end 20 of the pedal 10 is inserted through a thin plate having a corresponding elongated groove 30 in the comb guide 32, in other words an elongated groove 30 resembling a comb. This elongated groove 30 limits both vertical and horizontal movement of the pedal 10. The comb guide 32 is attached to a support 34 which also carries an upper shock absorber 36 and a lower shock absorber 38. A plurality of felt pieces 40 are attached to each side of the pedal 10 to reduce noise when the pedal 10 strikes inside the comb guide 32 defined by the elongated groove 30. A protective board, in other words a toe board 42, is attached to the support 34. Similarly, the rear frame 44 and the heel board 46 are provided on the rear end portion 18 side of the pedal 10. The comb guide portion 32 and the support portion 3
4, the toe board 42, the back frame 44, the heel board 46 and the spring rail 14 are held in place by the sides 16 (only one side is shown) and are usually all made of wood. There is. All or some of the comb guides 32, supports 34, toe boards 42, back frame 44, heel boards 46 and spring rails 14 are collectively referred to herein as the "base" for convenience. The entire assembly is known as the "pedal board".

The metal flat spring 12 of the conventional pedal board is a pedal.
Since it does not tend to provide sufficient resistance to lateral movement of 10, it requires heat treatment before installation and must be adjusted to proper tension. Both sides of the elongated groove 30 when the front end 20 of the pedal 10 moves in the elongated groove 30,
It often strikes the upper shock absorber 36 and the lower shock absorber 38.
This causes an unwanted sound despite the presence of felt pieces 40 and the like.

A magnet 48 is provided at the front end 20 of the pedal 10 to actuate a reed switch (not shown) as the pedal 10 moves up and down. Coordination of this magnet 48 with the pedal 10 is often important and difficult.
Mechanical switch devices have also been used.

Referring now to FIG. 2A, the pedal board according to the present invention comprises a plurality of pedal boards, such as a sharp pedal 50 provided on the back of the pedal board by a mounting pin 54 inserted at the rear end 56 of the pedal 10. It is composed of pedals. The upper end of this mounting pin 54 is the sharp pedal.
It is inserted into the hole in 50 by an interference fit and the lower end of the opposite mounting pin 54 is inserted into the hole in the spring rail 58 by an interference fit. This interference fit is achieved by making the outer size of the mounting pin 54 slightly larger than the inner size of the hole in which the mounting pin 54 is located. The mounting pin 50 is preferably cylindrical in shape, and the interference fit may be made by making the outer diameter of the mounting pin 54 slightly larger than the inner diameter of the hole in which the mounting pin 50 is located. preferable. This interference fit provides a connection between the mounting pin 54 and the sharp pedal 50, as well as the mounting pin 54 and the spring rail 58.
It prevents the bond between and from breaking.
(The natural pedal 51 is shown behind the sharp pedal 50 and is also provided.)

FIG. 2A shows the sharp pedal 50 in its normal upper position. The sharp pedal 50 is held in that position by the resistance of the mounting pin 54 to bending. The upper limit of movement of the front end 62 of the sharp pedal 50 is limited by the stopper 86. When the sharp pedal 50 is in the normal “up” position, the front end 62
Is rested by the stopper 86. Therefore,
The mounting pin 54 defines the tension represented by the sharp pedal 50 at an angle O provided on the spring rail 58.
Generally, the sharp pedal 50 is designed to be preloaded with a pull of 2.5-3 pounds.

Generally, the sharp pedal 50 is preferably made of wood and the mounting pins 54 are preferably made of fiberglass. Pull-traded fiberglass has been found to give particular benefits and consistent results. However, it should be understood that the mounting pin 54 can be made from other materials without departing from the principles of the present invention.

The guide pin 60 is the front end of the sharp pedal 50.
It is attached to the sharp pedal 50 at 62.
The guide pin 60 is also attached to the sharp pedal 50 with an interference fit by inserting the upper end of the guide pin 60 into the hole. The lower end portion on the opposite side of the guide pin 60 is loosely fitted in the hole 64 in the switch assembly block 66. The guide pin 60 also limits the maximum lateral movement of the sharp pedal 50 and actuates an elastic electrical switch 68 when the sharp pedal 50 is depressed by the organist's foot.

The pedal board according to the invention also has a front frame 7
0, toe board 7 attached to this front frame 70
2. The rear frame 74 and the heel board 76 attached to the rear frame 74 are provided by the heel board 76, which is strengthened by the rear support 78. The switch assembly block 66 is supported by the switch assembly block support portion 80 and the spacer 81. Stopper 86
Attached to toe board 72. The entire assembly is held together by both sides 82 (although only one side is shown). The pedal board has both sharp and natural pedals, and the pedal 50 is a sharp pedal and has an extension 84 attached to the sharp pedal 50 for receiving pressure from the player's foot.

FIG. 2B shows the sharp pedal 50 in its depressed position when depressed by the foot of a musician playing the organ. The resistance of the mounting pin 54 provides that tension that the musician's foot must move against the tension, while the resistance of this mounting pin 54 releases the pressure from the musician's foot as shown in FIG. 2A. Return the sharp pedal 50 to its normal position.

It should be appreciated that the holes 64 in the switch assembly block 66 limit the maximum lateral movement of the sharp pedal 50 by the guide pins 60, but the guide pins 60 do not typically hit the inner surface of the holes 64. .. The reason for this is the mounting pin
This is because the resistance of 54 is relatively large. Therefore, the preferred embodiment of the present invention does not encounter the problems encountered in the prior art shown in FIG.

FIG. 3A is taken along line AA of FIG. 2A.
A partial view of a cross section of the pedal board is shown. As shown, a plurality of sharp pedals 50 and corresponding elastic electrical switches 68 (only one of each electrical switch is shown in FIG. 2A) are disposed adjacent to each other. .. FIG. 3B shows another partial view of the pedal board of FIG. 2A taken along the line BB of FIG. 2A. 3A shows the front of the pedal board and the switch assembly, and FIG. 3B shows the back of the pedal board and the mounting pins.

The relationship between the sharp pedal 50 and the guide pin 68 with respect to the electric switch 68 made of an elastic material is shown in FIG. 4A and FIG.
More clearly shown in B. 4A and 4B, the switch assembly block 66 is a slightly simplified view of an elastic electrical switch 68, but is shown in more detail. Figure 4A corresponds to Figure 2A with its sharp pedal 50 in its normal upper position, and Figure 4B corresponds to Figure 2B with its sharp pedal 50 in its depressed position. is doing.

In FIGS. 4A and 4B, a pair of annular washers 13 in which holes 64 are made of felt or similar material and are stacked on protrusions 134 in the holes 64.
It can be known to have 0,132. These washers 13
0,132 provides the guide pin 60 with a low friction surface when the guide pin 60 strikes against the sides and also reduces the sound as a result of such strike.
These washers 130, 132 also protect the electrical switch 68 by helping prevent other articles from entering the compartment 65 in which the electrical switch 68 is located. In addition, a felt or rubber shock absorber 136 is provided on top of the switch assembly block 66 to enable the sharp pedal 50 or its sharp pedal 50 to reach its lowest position as shown in FIG. 4B. It hits the shock absorber 136 that softens the impact on the pedal 50, minimizing the sound,
Electric switch made of elastic material when the guide pin 60 moves downward
The contacting and pressing of 68 is also shown in Figure 4B. This causes the switch, which completes the circuit, to close the contacts, as described below.

Another embodiment of the pedal board according to the present invention is shown in FIG.
A and FIG. 9B. In this embodiment,
Same as the embodiment shown in FIGS. 2A and 2B, except that the spring force is not primarily provided by the mounting pins. In the present embodiment, a mounting pin 146 is used that does not need to be angularly inserted into the spring rail 58, in other words it need not be preloaded with tension. If anything, coil tension arranged between the sharp pedal 50 and the switch assembly block 66,
In other words, it uses a "compass" spring.

The compass spring 148 is fitted into the hole at the bottom of the sharp pedal 50 at one end 150.
Installed by snapping in 8. The other end 15
In No. 2, it is arranged in a hole in the adjusting member 154. The adjustment member 154 can be moved up and down to adjust the spring force applied to the sharp pedal 50.

The adjustment member 154 can be understood by referring to FIGS. 10 and 11. The adjusting member 154 is provided with a vertical elongated groove 156. This elongated groove 156
Anchor 160 with internal matching threads positioned through
An adjustment member 154 is provided on the switch assembly block 66 by a bolt 158 screwed into the. The bolt 158 can be loosened to impart upward or downward movement to the adjustment member 154 to adjust the spring load. This adjustment member 15
Once the correct position for 4 is found, the bolt
158 is clamped to hold adjustment member 154 in place.

A front view of the electric switch 68 made of an elastic material is shown in FIG.
Is shown in. In FIG. 5, the electric switch 68 made of an elastic material is shown separated from the other parts of the pedal board. Since a plurality of pedals are used on the pedal board, a plurality of sets of elastic electric switches 68 are assembled side by side in one elongated groove piece 88. Each set of elastic electrical switches 68 is made from a single assembly, typically a single assembly having seven, five or three switches molded from an elastic material such as rubber. Is preferred. FIG. 5 shows a first switch 90 and a second switch 92.
And are shown. These first and second switches 9
The space 94 below 0,92 is communicated by a molded path 96 and also by a molded surge chamber 98. This is because if the switch 90,92 is pressed, the air under the switch 90,92 can escape to the other switch 90,92 or the surge chamber 98.

Next, referring to FIG. 6, the electric switches 90 and 92 made of each elastic material include a small chamber 102 having a bell-shaped upper partition wall 104 including a concave portion 106 in which a joint 108 is arranged, and a bottom portion of the small chamber 102. Diaphragm 110 to stop the flow of
It is equipped with The fin 112 having a space between the fins 112 is provided at the top of each joint 108 for receiving the end of the guide pin 60, the end of the guide pin 60 and the top of the joint 108. Air is allowed to escape from between. Slots 88 for elastic electrical switches 90,92
Is a printed circuit board 114 of the kind known to those skilled in the art.
It is provided in. This elastic material electric switch 90,92
The strips 88 of the guide holes 1 in the printed circuit board 114
Its printed circuit board 114 by pins 116 located on 08
It is located on top. The resulting assembly is provided by wood screws (not shown) located through holes 101 in elongated strip 88 and corresponding holes 103 in printed circuit board 114 (see FIG. 5). However, it should be understood that other support structures and attachment mechanisms may be used without departing from the principles of the present invention.

As shown in FIG. 7, a printed circuit board
114 has contacts 118, which form the two sides of the switch printed or etched on this printed circuit board 114.
Has 120. One contact 118 is the other contact 120
When shorted to, the circuit is closed. 6 and 7, in a preferred embodiment, a plurality of pack-shaped circular conductive members 122, preferably made of graphite-containing rubber (conductive rubber), are disposed at the bottom of each diaphragm 110. ing. These conductive members 122 are located on the bottom of the diaphragm 110 in a circular pattern. The diaphragm 110 is pushed downward by the force around the outer edge 124 of the diaphragm 110, so that the small chamber 102
If the internal pressure increases, switch 9 in FIG.
2, the conductive member 122 has contact 1
It is pressed against 18,120 to short-circuit those contacts 118,120.

The structure of the electric switch 68 made of an elastic material allows a relatively large allowable range in the range of movement of the guide pin 60. More specifically, each electrical switch 68 is surrounded by a bell-covered upper bulkhead 104 with a base portion 105 and a bell-covered top wall that is attached to the rest of the elongated slot 88 of the electrical switch 68. It has a tapered flange portion 126 between the partition 104 and the mounting portion 107. Thus, when a force is applied to the fin 112 at the top of the joint 108, the bell-covered upper septum 104 also transfers the force downwardly to the weak flange portion 126 and the bell-coated upper septum 104 itself. And bends, increasing the pressure in the small chamber 102. While bending the weak flange portion 126 so as to move the diaphragm 110 toward the printed circuit board 114, the increased pressure in the chamber 102 also ensures that the conductive member 122 is in contact with the contacts 118, 120 on the printed circuit board 114. Push against. Electrical contacts 118,
The 120 is generally made approximately midway through the range of movement of the guide pin 60. Further, pushing joint 108 down further than necessary merely increases the pressure in chamber 102 and provides a relatively wide tolerance at the final stop of guide pin 60. This simplifies the manufacture and assembly of the pedal board.

When the diaphragm 110 is pushed downwards, the air underneath it in space 94 escapes via path 96 to another electrical switch or surge chamber 98.

Another embodiment of the electric switch made of elastic material is as follows.
It is shown in FIG. This electric switch 68 made of an elastic material is shown in FIG. 6 except that the conductive layer 128 of the conductive member is used at the bottom of the diaphragm 110 instead of the conductive member 122 on the pack.
It is the same as the elastic electric switch shown in.
This conductive member is preferably a graphite-containing material applied to the bottom of the diaphragm 110 in a paste form. The elastic electric switch shown in FIG. 8 is shown in FIG.
A cross section as obtained along line E is shown.

The electric switches made of elastic material are particularly advantageous in detecting movement of the pedal because of their wide tolerance and long useful life for detecting the movement of the electric switches 68 made of elastic material, and their reliability. Have been found. Also, the combined contact portion 11 as shown in FIG.
The combination of 8,120 and either the puck rubber conductive member 122 or the conductive layer 128 at the bottom of the diaphragm 110 has been found to be particularly effective in ensuring electrical shorts.

Another embodiment of an elastic electrical switch is shown in FIGS. 12 and 13. This electric switch made of elastic material is the same as the electric switch made of elastic material shown in FIGS. 6 and 7, respectively, except for two points. First of all
In addition, a pack-shaped, in other words, disk-shaped conductive member 138
Does not require or have a diaphragm because it is attached to the bell-covered upper partition 104 itself at the bottom of the outer periphery 140 of the bell-covered upper partition 104.
Secondly, the number of contact parts 142, 144 can be larger and the contact parts 142, 14 can be larger than in the embodiment shown in FIG.
The width and spacing of 4 can be small. The reason for this is that the conductive members 138 can be spaced farther apart.

The terms and expressions used in the foregoing specification are used herein as terms of description and not of limitation. Also, the use of terms and expressions that exclude equivalents to all or some of the features disclosed and described are not intended and the scope of the present invention is limited solely by the scope of the claims. It is recognized that it is defined and limited.

[Brief description of drawings]

FIG. 1 is a side view showing a side surface of a conventional general pedal board together with a cross section of a mounting base portion of the pedal board.

FIG. 2A shows a simplified side view of a pedal board according to the invention with the base of the pedal board shown in section, one pedal part of the pedal in the normal position for installation and installation of guide pins. 3 is a schematic side view cut away in section as shown. B with one pedal in the depressed position, FIG.
3 is a schematic side view of the A pedal board.

FIG. 3A is a partial cross-sectional view of the pedal board taken along the line AA in FIG. 2A. 2B is a partial cross-sectional view of the pedal board taken along the line BB in FIG. 2A.

4A is a partially enlarged sectional view of the pedal board of FIG. 2A showing a guide pin in a normal state with respect to an electric switch made of an elastic material. 2B is a partially enlarged cross-sectional view of the pedal board of FIG. 2B showing the guide pin in a depressed position with respect to the elastic electric switch.

FIG. 5 is a front view of a pair of elastic electrical switches for each pedal according to the present invention.

FIG. 6 is a side cross-sectional view of the electric switch made of an elastic material taken along the line C-C in FIG. 5 and shown at a position where one electric switch made of the elastic material is pressed.

FIG. 7 is a sectional view of one electric switch made of an elastic material, taken along line D-D in FIG.

FIG. 8 is a side sectional view of an electric switch made of another elastic material according to the present invention.

FIG. 9A shows a simplified side view of another embodiment of a pedal board according to the invention, with the base of the pedal board shown in section, with one pedal part of the pedal in the normal position installed, Fig. 7 is a schematic side view cut away in section to show the mounting of guide pins and springs. B
Figure 9A with one pedal in the depressed position
2 is a schematic side view of the pedal board of FIG.

FIG. 10 is an enlarged view showing a structure of a spring and an adjusting member of a portion of the pedal board shown in FIGS. 9A and 9B.

FIG. 11 is a partial cross-sectional view of the front surface of the pedal board taken along the line EE in FIG. 9A.

FIG. 12 is a side sectional view of another electric switch made of another elastic material according to the present invention.

13 is a front sectional view of the electric switch made of another elastic material shown in FIG. 12;

[Explanation of symbols]

 10 pedal 12 flat spring 14,58 spring rail 18,56 rear end 20 front end 22 fulcrum 24,26,28 wood screw 30,156 elongated groove 32 comb guide 34 support 36 upper shock absorber 38 lower shock absorber 40 felt piece 42, 72 Toe board 44,74 Rear frame 46,76 Heel board 48 Magnet 50 Sharp pedal 51 Natural pedal 54,146 Mounting pin 60 Guide pin 62 Front end 64 hole 65 Small chamber 66 Switch assembly block 68 Electric switch 70 Front frame 78 Rear support 80 Switch Assembly block support 81 Spacer 84 Extension 86 Stopper 88 Strip 90 First switch 92 Second switch 94 Space 96 Path 98 Surge chamber 100 Guide hole 101,103 Hole 102 Small chamber 104 Bell-shaped upper partition 105 Basic part 106 Recessed portion 107 Mounting portion 108 Joint portion 110 Diaphragm 112 Fin portion 114 Printed circuit board 116 Pins 118,120,142,144 Contact portion 122,138 Conductive member 124 Outer edge 126 Flange portion 128 Conductor Layers 130, 132 washer 134 protrusion 136 damper 140 outer peripheral portion 148 compass spring 150 one end 152 other end 154 adjusting member 158 volts 160 Anchor

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[Procedure amendment]

[Submission date] October 7, 1992

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Figure 5]

[Figure 7]

[Figure 8]

[Fig. 2]

[Figure 6]

FIG. 11

[Fig. 12]

[Figure 3]

[Figure 4]

[Figure 9]

[Figure 10]

[Fig. 13]

 ─────────────────────────────────────────────────── ———————————————————————————————————————————————————— Inventor The Giorgio Thomas Kirkwood United States 97214 Oregon Hills Zboro N. E. Seventeenth Ave Any 281 (72) Inventor Daitz Jetlett Shark United States 97206 Oregon Portland ES. E. Seventy-Fourth Ave Anyu 2719 (72) Inventor Roger Thomas Brown United States 97123 Oregon Hills Bolo Es. E. Aspen Coat 2743 (72) Inventor Robert Lewis Smith USA 97005 Oregon Beaverton S. Double You. Downing Drive 9260

Claims (23)

[Claims] 1. A base for supporting one or a plurality of pedals and having a front surface and a back surface, and (b) a front end portion adjacent to the front surface of the base portion and a rear end portion adjacent to the rear surface of the base portion. At least one pedal which is an elongated member having (c) adjacent to the pedal at its rear end,
A mounting pin that is mounted on the base side by side adjacent to the back of the base and supports the pedal on the base such that downward movement of the pedal bends the mounting pin; (d) front end of the pedal. And (e) a small chamber is formed with (e) a pair of contact portions which are arranged below the guide pin so as to be pressed downward by the guide pin and which conduct current when short-circuited. And a mounting portion and a partition wall made of an elastic material, which is disposed between the basic portion and the mounting portion and has a flange portion softer than the basic portion, and a bottom portion of the partition wall adjacent to the contact portion on the partition wall. A plurality of conductive members that short-circuit the contact portions by pressing the conductive members against the contact portions when the partition wall is pressed downward around the Musical pedal plate, characterized in that it comprises an electric switch of an elastic material having a. 2. The pedal board for musical instruments according to claim 1, wherein the partition wall made of an elastic material is composed of a substantially bell-shaped member. 3. The pedal board for musical instruments according to claim 1, wherein the contact portion is disposed on a printed circuit board, and the partition wall is supported by the printed circuit board. 4. The pedal board for musical instruments according to claim 1, wherein the partition wall has a joining portion which is disposed at an uppermost portion of the electric switch made of the elastic material and receives a pressing force. 5. The joint has fins on the joint that are separated from each other and allows air to escape between the fins when a pressing force is applied to the joint. It is possible, The pedal board for musical instruments of Claim 4 characterized by the above-mentioned. 6. The contact portion comprises a first plurality of elongated parallel conductive strips commonly connected together at one end and a second plurality of electrically connected elongated strips commonly connected together at opposite ends. Two plurality of elongated parallel extending conductive strips, wherein the first strip is the second strip.
The pedal board for musical instruments according to claim 1, wherein the pedal board is arranged so as to be inserted with the elongated strip. 7. The conductive member is disposed around a lower portion of the partition wall made of an elastic material to short-circuit at least one of the first elongated strips to one of the second elongated strips. 7. The pedal board for musical instruments according to claim 6, comprising a plurality of circular conductive rubber disks each having a sufficient diameter. 8. The circular conductive rubber disk having a diameter large enough to short-circuit at least one of the pair of contact portions, the conductive member being arranged around a lower portion of the partition wall made of an elastic material. 3. A plurality of the above are provided.
The pedal board for musical instruments described in. 9. (a) A base portion supporting one or a plurality of pedals and having a front surface and a back surface, (b) a front end portion adjacent to the front surface of the base portion and a rear end portion adjacent to the rear surface of the base portion. At least one pedal which is an elongated member having: (c) sensing means associated with the pedal for generating an electrical signal representative of movement of the pedal; (d) disposed near the front surface of the pedal; A spring means attached to the pedal and pushing the pedal upwards; and (e) removably attached to the spring means and the base near the front surface of the base and perpendicular to adjusting the tension of the spring means. A pedal board for musical instruments, comprising a spring attachment member that is movable in any direction. 10. The pedal board for a musical instrument according to claim 9, wherein the spring means comprises a tension spring. 11. The spring mounting member comprises a block that has a vertically elongated groove and is removably attached to the base by a threaded fastener inserted through the elongated groove. 11. The pedal board for musical instruments according to claim 10, wherein the pedal board is movable in a vertical direction when the tool is loosened. 12. The musical instrument pedal board of claim 9, further comprising detection means associated with the pedal for generating an electrical signal representative of movement of the pedal. 13. (a) A base portion supporting one or a plurality of pedals and having a front surface and a back surface, (b) a front end portion adjacent to the front surface of the base portion and a rear end portion adjacent to the rear surface of the base portion. At least one pedal that is an elongated member having: (c) Pedal mounting means disposed adjacent to the rear surface of the base portion for supporting the pedal at the base portion, (d) arranged near the front surface of the pedal Is provided and attached to the pedal, and spring means for pushing the pedal upward and (e) the spring means, and the detachable attachment to the base portion near the front surface of the base portion, and the pulling of the spring means. A pedal board for musical instruments, comprising a spring attachment member that is vertically movable for adjustment. 14. The musical instrument pedal board according to claim 13, wherein the spring means is a tension spring. 15. The spring mounting member comprises a block removably attached to the base by a threaded fastener having a vertically elongated slot inserted through the elongated slot. 14. The musical instrument pedal board according to claim 13, wherein the pedal board is vertically movable when the tool is loosened. 16. The musical instrument pedal board of claim 13, further comprising detection means associated with the pedal for generating an electrical signal representative of movement of the pedal. 17. (a) A pair of contact portions for transmitting an electric current when short-circuited, (b) a small chamber is formed, and a basic portion, a mounting portion, and the basic portion and the mounting portion are disposed between the basic portion and the mounting portion. And a partition wall made of an elastic material having a flange portion that is softer than the basic portion, and (c) the conductive member is pressed downward when the partition wall is pressed downward around the bottom portion of the partition wall adjacent to the contact portion. A pedal board for musical instruments, comprising a plurality of conductive members which are pressed against the contact portions to short-circuit the contact portions. 18. The musical instrument pedal board according to claim 17, wherein the partition wall made of an elastic material is formed of a substantially bell-shaped member. 19. The pedal board for musical instruments according to claim 17, wherein the contact portion is disposed on a printed circuit board, and the partition wall is supported by the printed circuit board. 20. The pedal board for musical instruments according to claim 17, wherein the partition wall has a joining portion which is disposed at an uppermost portion of the elastic electric switch and receives a pressing force. 21. The joint has fins on the joint that are separated from each other so that air can escape between the fins when a pressing force is applied to the joint. 21. The pedal board for musical instruments according to claim 20, which is possible. 22. The contact portion comprises a first plurality of elongated conductive strips, which are commonly connected together at one end, and a second plurality of electrically conductive elongated strips, which are commonly connected together at opposite ends. Two elongated parallel conductive strips, wherein the first strips are arranged to be interleaved with the second strips. The pedal board for musical instrument according to claim 17. 23. The conductive member is disposed around a bottom portion of the partition wall made of an elastic material and is sufficient to short-circuit at least one of the first elongated strips to one of the second elongated strips. 18. The musical instrument pedal board according to claim 17, comprising a plurality of circular conductive rubber disks each having a diameter.