JPH0631519Y2 - Electronic drum stack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic drum stick.

[Prior Art and its Problems] In recent years, in the field of electronic musical instruments, a sensor for detecting vibration and converting it into an electric signal is provided in a stick body, and a drum, a book, a stick head provided at the tip of the stick body, An electronic drum stick has been developed in which an electric signal corresponding to the vibration is output from a sensor by hitting an object such as a desk, and a drum sound is emitted from a speaker (for example, Japanese Utility Model Laid-Open No. 62-116300). Listed in).

The structure of this kind of electronic drum stick is conventionally divided into two parts along the longitudinal direction of a cylindrical stick body, and a circuit board and a sensor equipped with electronic parts are positioned and screwed on one of them. After that, the other of the divided stick main bodies is assembled, the stick head is attached to the tip end side, and the connection cord is pulled out from the rear end side to be connected to the speaker.

However, in the above-mentioned structure, since the stick body is divided into two, a mold is required for each, and the manufacturing thereof is complicated and the cost is high. In addition, when the sensor and the circuit board are incorporated into one of the divided stick bodies, the sensor and the circuit board must be positioned and then screwed, which causes a problem of extremely poor assembly workability.

[Object of the Invention] The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an electronic drum stick having a simple structure and capable of being easily and satisfactorily assembled.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention forms a cylindrical circuit board having a wiring pattern to which an electric signal for instructing the start of a musical tone generated from an electric signal generating means is applied. The main point is that the attachment member fixed inside the stick body is fixed inside the stick body.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the external appearance of the electronic drum stick, and FIGS. 2 to 6 show its internal structure. The electronic drum stick 1 includes an elongated cylindrical stick body 2, a stick head 3 provided at the tip of the stick body 2, and a lid body 4 provided at the rear end of the stick body 2, and an electric signal generator is provided inside the stick body 2. 5 and a circuit board 6, and a switch 7 for timbre switching is provided in the center.

The stick body 2 is formed by extruding ABS resin into a substantially cylindrical shape. The internal shape of the stick main body 2 is rectangular as shown in FIG. 2, and its lower side is arcuate. And a guide holding groove 2a having a concave shape for guiding and holding both ends of the circuit board 6 on the inner wall in the middle thereof.
2a is formed simultaneously with extrusion molding. in this case,
A button insertion hole 2b is provided at the center of the stick body 2, and a grip portion 2c is provided on the rear side in the vicinity thereof.

The stick head 3 transmits vibrations when the object such as a drum, a book, or a desk is hit or shaken to the electric signal generator 5. The stick head 3 is made of a hard resin such as ABS resin and has a substantially elliptical tip. The rear end is a small diameter portion 3a having the same sectional shape as the internal shape of the stick body 2. Further, the stick head 3 is made of a soft resin such as urethane resin almost entirely except for the rear end side thereof.
It is covered with b.

The electric signal generator 5 is turned on when the stick head 3 is struck or shaken, and outputs a predetermined electric signal for generating a desired musical sound from a musical sound generator (not shown). As shown in FIGS. 3 and 4, the sensor pole 5b, the insulating member 5c, the coil 5d, and the like are provided on the sensor base 5a that constitutes the mounting member, which is a switching type structure. That is, the sensor base 5a is of elongated plate shape made of a hard resin such as ABS resin, substantially circular mounting portion 5a ₁ is erected in the center. And the sensor base 5a
End (left side in the drawing) along with is screwed to the small-diameter portion 3a of the stick head 3 by screws 5a _2, the other end is screwed with screws 5a ₂ on the circuit board 6. The sensor pole 5b is a rod-shaped member having conductivity such as metal, is attached to the center of the attachment portion 5a ₁ of the sensor base 5a, and is arranged substantially on the center line of the stick main body 2, and one end side of the sensor pole 5b is directed to the tip side. It extends horizontally and the other end extends rearward and is soldered to the connection terminals of the circuit board 6.
The insulating member 5c has a tubular shape and is fixed to the base portion on one end side of the sensor pole 5b. The coil 5d is bent and deformed in response to the vibration of the stick head 3 and comes into contact with the sensor pole 5b so that it can come into contact with and separate from the sensor pole 5b. The coil 5d is made of a conductive material such as metal, and one end thereof is attached to the outer periphery of the insulating member 5c. At the same time, it is connected to the circuit board 6 via the lead wire 5e. In this case, the lead wire 5e extends from the end of the coil 5d to the mounting portion 5a of the sensor base 5a.
₁ rises, passes through the notch groove a provided in the upper portion of the mounting portion 5a ₁ , is guided to the connection terminal of the circuit board 6, and is soldered.

As shown in FIGS. 2 to 6, the circuit board 6 has an elongated strip plate shape, a predetermined wiring pattern 6a and electronic parts (not shown) are provided on the upper surface thereof, and the tone color is switched. The contact plates 8 and 9 of the switch 7 are attached. Further, as shown in FIG. 2, both ends of the circuit board 6 are provided with guide holding grooves 2a, 2a formed in the stick body 2.
Is guided to the inside of the stick main body 2 along with and fixed at a predetermined position. In this case, the circuit board 6 is inserted from the tip side (left side in the figure) of the stick body 2.

The tone color changing switch 7 is for changing the tone color,
As shown in FIGS. 2 and 5, the push button 7a and the first and second contact plates 8 and 9 are provided. That is, the push button 7a protrudes and retracts to the outside of the stick body 2 and pushes down the second contact plate 9, and has a cylindrical shape with an upper part closed, and a pressing portion 7a ₁ is formed in the center thereof. At the same time, elastic hooks 7a ₂ ...
Is formed, and is arranged so as to be retractable in the button insertion hole 2b of the stick body 2. First and second contact plates 8, 9
Each of which is a leaf spring-like member made of a metal plate, has contact pieces 8a and 9a provided at the tips facing each other, and the leg portions 8b and 9b in the longitudinal direction and the leg portions in the width direction on the opposite sides thereof. The portions 8c and 9c are bent and formed, and the legs 8b and
8c, 9b, 9c are soldered on the circuit board 6. As a result, the contact plates 8 and 9 are respectively connected to the circuit board 6
Electrically connected to. In this case, the first contact plate 8
Has its tip end sidewardly separated from the push button 7a. Also,
The tip of the second contact plate 9 passes through the lower side of the push button 7a and is arranged below the first contact plate 8, and the first contact plate 8 is always provided.
When the push button 7a is pushed, it is pushed down by the pushing portion 7a ₁ of the push button 7a via the felt 9d, and the contact piece 8b comes into contact with the fixed contact 6b provided on the circuit board 6. It is like this.

A connection cord 10 is connected to the circuit board 6 by a connector (not shown). The connection cord 10 is connected to a musical sound generating device (not shown) for generating a predetermined musical sound through the lid 4 attached to the rear end of the stick body 2.

Next, a case of assembling the electronic drum stick 1 as described above will be described.

In this case, the electric signal generator 5 is configured in advance by mounting the sensor pole 5b, the insulating member 5c, and the coil 5d on the sensor base 5a. Then, one end of the electric signal generating portion 5 is attached to the small diameter portion 3a of the stick head 3 with a screw 5.
While screwing with a ₂ , the other end of the electric signal generator 5 is screwed to the end of the circuit board 6 with a screw 5a ₂ , and the sensor pole 5b and the coil 5d of the electric signal generator 5 are fixed to the circuit board 6. Connect electrically. The first and second contact plates 8 and 9 are attached to the circuit board 6 in advance.

In this way, the electric signal generator 5 and the stick head 3
When the circuit board 6 connected to the stick body 2 is incorporated in the stick body 2, both ends of the circuit board 6 are formed in the stick body 2 from the tip side (left side in the figure) of the stick body 2 as shown in FIG. It is arranged in the guide holding grooves 2a, 2a formed, and is inserted into the stick main body 2 along the guide holding grooves 2a, 2a. Then, by inserting the small-diameter portion 3a of the stick head 3 into the tip of the stick body 2, the stick head 3 is attached to the tip of the stick body 2, and the electric signal generator 5 and the circuit board 6 are located in the stick body 2 at predetermined positions. Fixed to. Therefore, the second contact plate 9 of the tone color changeover switch 7 provided on the circuit board 6 corresponds to the button insertion hole 2a of the stick body 2.

In this state, the push button 7a of the tone color changeover switch 7 is inserted into the button insertion hole 2a from the outside. Then, contact the pressing portion 7a ₁ of the push button 7a is in response to the felt 9d on the second contact plate 9, which is pushed up all the time by a second contact plate 9.
However, the push button 7a has the elastic hook 7 provided around it.
Since a ₂ is locked to the edge of the button insertion hole 2a, never get out upwards. After that, the connection cord 10 is connected to the rear side of the circuit board 6, and a plug (not shown) provided at the rear end of the connection cord 10 is attached to a jack provided in the musical tone generating device. Is electrically connected to the sound source driving unit and the speaker (not shown).

When such an electronic drum stick 1 is used, the grip portion 2c of the stick body 2 is held and shaken or an object such as a drum, a book or a desk is hit by the stick head 3 provided at the tip of the grip portion 2c. Good. Then, the vibration of the stick head 3 is transmitted to the electric signal generator 5,
In response to this vibration, the coil 5d of the electric signal generating section 5 bends and comes into contact with the sensor pole 5b, so that the electric signal generating section 5 is turned on and an electric signal for generating a musical sound is sent to the circuit board 6.
To the speaker from the circuit board 6 through the connection cord 10, and the drum sound is emitted from the speaker. In this case, since the second contact plate 9 is normally in contact with the first contact plate 8 of the tone color changeover switch 7, a general drum sound, for example, a snare drum sound is emitted if it is set on the snare drum. Make a sound. However, when the push button 7a of the tone color changeover switch 7 is pressed while being hit, another drum sound is emitted. That is, when the push button 7a is pushed, the second contact plate 9 is pushed down by the pushing portion 7a ₁ of the push button 7a, and the first contact plate 8 is pushed.
Away from, the switch is switched by contacting the fixed contact 6a of the circuit board 6, and a different drum sound is emitted.

However, according to the electronic drum stick 1 configured as described above, without dividing the stick body 2,
Since the stick main body 2 is formed into a substantially cylindrical shape by extrusion molding, the stick main body 2 can be easily and easily manufactured. In addition, the inner wall of the stick body 2 is formed with guide holding grooves 2a, 2a for guiding and holding both ends of the circuit board 6 along the longitudinal direction. Therefore, not only the structure is simple, but also the circuit board 6 is attached to the stick body 2. In the case of arranging the inside of the circuit board 6, the both ends of the circuit board 6 are simply inserted into the stick main body 2 along the guide holding grooves 2a, 2a, and it is not necessary to perform positioning or the like. Can be incorporated.

In the above-described embodiment, the guide holding grooves 2a, 2a having a concave shape are formed on the inner wall of the stick body 2, but the invention is not limited to this. For example, as shown in FIG. Alternatively, a pair of ribs 11, 11 may be formed so as to project, and the guide holding grooves 2a, 2a may be formed between them.

Further, the invention is not limited to the switching type electric signal generating unit as described above as the electric signal generating unit, and may be a sensor such as a pressure sensitive element (for example, a piezoelectric element) that generates an electric signal according to the strength of vibration. Of course, it may be used.

Further, although the case where the coil is used as the electric signal generating section has been described, for example, a conductive flexible tube may be used, and the electric signal generating section may have various configurations. Is.

[Advantage of the Invention] As described in detail above, according to the electronic drum stick of the present invention, the stick body is formed into a tubular shape without being divided, and the sticking member fixed inside the stick body is electrically connected to the electronic member. Since the circuit board having the wiring pattern to which the electric signal for instructing the start of the tone generation generated from the signal generating means is applied is fixed inside the stick body, the circuit board is screwed inside the stick body. It can be firmly fixed in the stick body through the mounting member without being fixed by using, so that the circuit board can be prevented from being inadvertently moved in the stick body. Further, there is an advantage that the assembling structure of the mounting member, the circuit board and the like is simple and can be easily and satisfactorily assembled.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is an external view of an electronic drum stick, FIG. 2 is a sectional view taken along line AA, and FIGS. 3 and 4 are sectional views showing the tip side of a stick body. ,
FIG. 5 is a cross-sectional view showing the switch portion, FIG. 6 is a plan view of a main portion of the circuit board, and FIG. 7 is a cross-sectional view showing a modified example. 1 ... Electronic drum stick, 2 ... Stick body,
2a ... guide holding groove, 11 ... rib, 3 ... stick head, 5 ... sensor part, 6 ... circuit board.

Claims (1)

[Scope of utility model registration request] 1. A stick main body formed in a tubular shape, a stick head fixed to one end opening of the stick main body, a mounting member fixed to the stick head inside the stick main body, and a mounting member. An electric signal generating means provided on the member for generating an electric signal for instructing the start of the generation of a musical sound in response to at least one of the striking operation and the swinging operation of the stick body; and the electric signal generating means. And a circuit board having a wiring pattern to which the electric signal is applied, wherein the circuit board is inside the stick body,
An electronic drum stick, which is fixed to the mounting member.