JPH078897U - Sounding device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sounding device that can obtain the tone of a real bell bell, can downsize the hammer mechanism, and has a high degree of freedom in mounting the hammer mechanism. [Structure] A bell 2a is attached to a bell base 1 fixed to the resonance case.
One end of ~ 2e is fixed. The solenoid-type hammer mechanisms 4a to 4e drive a rod-shaped hammer 5 movably provided in a direction orthogonal to the bells 2a to 2e by a solenoid coil 6 to strike the bell. For this reason, a real barbell sound is obtained, and since the hammer mechanism is not interlocked with the mechanical parts such as the cam, the hammer mechanism is downsized and the degree of freedom of arrangement is increased.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sounding device suitable for a music box, a chime, a time signal mechanism of a clock, and the like.

[0002]

[Prior art]

 Conventionally, many types of this type of sounding device strike a sounding body by rotating a cam that interlocks with a motor. For example, taking a hall clock sounding device with a time signal function such as Westminster Chime, we will fix rod bells of different lengths that generate different scales on a rod bell made of cast iron. By striking the base end of the bell with a hammer mechanism, a predetermined melody and time signal sound are generated. The hammer mechanism is a mechanical mechanism that normally determines the number of times of alarm by the position of the pin on the counting cam that is interlocked with the hour hand wheel and drives the hammer mechanism by rotating the alarm for time signal. On the other hand, there is also known a sounding device that generates a similar timbre by an electronic sound instead of the above mechanical sounding device.

[0003]

[Problems to be solved by the device]

 However, among the above-mentioned conventional sounding devices, the one using electronic sound has a degree of freedom in tone color, but can obtain only a pseudo tone color, and cannot obtain a high-quality genuine barbell sound. . In addition, the conventional mechanical sounding device requires a plurality of cams and a hammer mechanism interlocking with these cams, which increases the size of the machine and limits the mounting position of the sounding device near the cams. There is a point.

The present invention has been made to solve such a problem, and the tone of a real barbell can be obtained, the hammer mechanism can be downsized, and the hammer mechanism can be freely mounted. The purpose is to provide a sounding device with high frequency.

[0005]

[Means for Solving the Problems]

 The sounding device according to the present invention includes a rod bell fixed to a resonance case, a rod bell having one end fixed to the bell bell and the other end being a free end, and a rod bell in a direction orthogonal to the bell. The present invention is characterized by comprising a solenoid type hammer mechanism for driving a rod hammer movably provided by a solenoid coil to hit the rod bell, and a current supply means for supplying an electric current to the hammer mechanism. .

[0006]

[Action]

 According to the present invention, the hammer mechanism for hitting the bell is of solenoid type, and the rod hammer is driven by the solenoid coil so that the rod hammer is driven in a direction orthogonal to the bell and produces sound. . For this reason, a real bell-bell sound is obtained, and since the hammer mechanism is not linked with mechanical parts such as a cam, the hammer mechanism is downsized, and the degree of freedom of arrangement is increased.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram showing a schematic configuration of a sounding device according to an embodiment of the present invention. The rod bell 1 is obtained, for example, by die-casting of gray cast iron or the like, and is composed of a flange portion 1a and a rising portion 1b which rises vertically from one end side of the flange portion 1a. The rod bell 1 is fixed to the inner surface of a wooden frame such as a hall lock (not shown) via a flange portion 1a. For example, the base ends of five bells 2a, 2b, 2c, 2d, 2e are fixed to the rising portion 1b of the bell bell 1 by screws 3 or the like. The rod bells 2a to 2e are made of, for example, iron or phosphor bronze, are arranged in parallel, and are set to have predetermined lengths so as to generate predetermined scales, and their tips are free ends.

Hammer mechanisms 4a, 4b, 4c, 4d, 4e for hitting the bells 2a to 2e are arranged at positions facing the base end positions of the bells 2a to 2e, respectively. The hammer mechanisms 4a to 4e are a rod-shaped hammer 5 made of a magnetic body that moves in a direction orthogonal to the arrangement direction of the rod bells 2a to 2e, and are arranged so as to surround the rod-shaped hammer 5 so that the rod-shaped hammer 5 moves forward. Is provided between the solenoid coil 6 for giving the moving force of the rod-shaped hammer 5, the collar 7 formed at the base end portion of the rod-shaped hammer 5 and the base end of the solenoid coil 6, and the rod-shaped hammer 5 is always retracted in the backward direction. It is composed of a biasing spring 8 and a cushioning material 9 made of felt, which is mounted on the tip side of the solenoid coil 6 and prevents the rod-shaped hammer 5 from rebounding from the bells 4a to 4e.

These hammer mechanisms 4a to 4e may be arranged in a straight line, but if they are arranged in a zigzag pattern as shown in the figure, the arrangement space is further reduced. The hammer mechanisms 4a to 4e are fixed to, for example, an inner surface of a wooden frame (not shown) by a frame-shaped support member 10.

FIG. 2 is a diagram showing a circuit for supplying a current to the hammer mechanisms 4a to 4e to control sound generation, and is an example applied to a timekeeping mechanism of a timepiece. The mode of the control circuit 11 is set by the mode signals M0 to Mn such as the track and the time range set by the mode switch 12, and is set from the movement 13 of the timepiece (quartz) every 1 hour, every 30 minutes or 15 minutes. When the time signal start signal HS is introduced every other time, the tone generation signals O1, O2, O3, O4, O5 of the designated mode are output. These tone signals O1 to O5 are supplied to the base of the transistor 22 via the resistor 21, respectively. The transistor 22 supplies the collector current to the solenoid coils 6 of the hammer mechanisms 4a to 4e through the variable resistor 23 for adjusting the volume. As a result, the hammer mechanisms 4a to 4e are selectively urged to strike the predetermined bells 2a to 2e. At this time, the diode 24 reversely connected in parallel with the solenoid coil 6 prevents overvoltage from occurring at both ends of the solenoid coil 6. The reset switch 14 is a switch for initializing the control circuit 11.

When the control circuit 11 is composed of a microcomputer, a microprogram for generating a tone signal stored in an internal ROM (not shown) is activated by a time signal start signal HS. The mode signals M0 to Mn specify the start address of the selected microprogram.

Further, when the control circuit 11 is configured by hardware, it may be configured as shown in FIG. 3, for example. In FIG. 3, the ROM 31 stores time-series data of the tone generation signals O0 to O5 corresponding to a plurality of songs. The selector 32 selects information indicating the upper address of the storage location where the information of the music designated by the mode signals M0 and M1 is stored from a plurality of registers 33, 34 and 35, and sets it as the upper address ADH of the ROM 31. Supply. The address counter 36 is reset by the broadcast start signal HS, counts the address clock CKA obtained by dividing the reference clock CK by the frequency divider 37, and supplies the lower address ADL of the ROM 31. The address clock CKA also determines the time tempo, that is, the reading interval of the ROM 31, and is supplied as a read-out signal RO of the ROM 31 via the inverter 38.

When the report start signal HS is introduced, the output of the timer 39 becomes “L” level for 1 to 2 minutes. This signal is given as a read enable signal RE to the ROM 31 via the NOR gate 40. On the other hand, the time signal start signal HS is supplied to the time counter 41 as the time count clock C KH. The time counter 41 counts up every hour to count the time from 1 to 12. The output of the time counter 41 is reset to the down counter 43 by the signal of the time start signal HS through the inverter 42. The down counter 43 detects, by the NOR gate 44, the sounding signal following the chime sound, that is, the sounding signal at the part where all the sounding signals O0 to O5 are active (L level), and the down sounding signal is downed. After counting, when the count value reaches 0, the tone generation stop signal ST is output via the NOR gate 45. The tone generation stop signal ST is supplied as a read enable signal RE of the ROM 31 via the NOR gate 40.

In the above embodiment, the rod bells 2a to 2e are fixed to the common rod bell 1, but according to the present invention, the positions of the hammer mechanisms 4a to 4e are moved. As shown in FIG. 4, for example, the bells 2 are divided one by one, and each bell 2, the bell base 1, and the hammer mechanism 4 are dispersed in arbitrary places of the case 51, as shown in FIG. It may be arranged. Further, the sound of each bell is generally adjustable by adjusting the drive current to the solenoid coil 6 by the variable resistor 23 shown in FIG. 2, but when it is desired to adjust the sound of each bell The resistor 21 connected to the base of each transistor 22 may be a variable resistor. By adjusting the sound volume with the current value in this way, the adjustment work becomes easier compared to the conventional type in which mechanical adjustment is performed.

As a method of preventing the rod-shaped hammer 5 hitting the rod bell 2 from rebounding, in addition to the above-described felt cushioning material, a method of applying a reverse voltage pulse immediately after the application of a drive voltage pulse or adjusting the spring pressure appropriately. There are methods. It is needless to say that the present invention can be widely applied not only to the timekeeping mechanism of a timepiece but also to a sounding device such as a music box and a chime. That is, when applied to a music box or a chime, the time signal start signal HS becomes a sound generation start signal, and the time counter and down counter shown in FIG. 3 are unnecessary.

[0016]

[Effect of device]

 As described above, according to the present invention, the hammer mechanism for hitting a bell is of a solenoid type, and the rod hammer is driven by a solenoid coil, so that the rod hammer is driven in a direction orthogonal to the bell. As a result, a real bell bell sound is obtained, and since the hammer mechanism is not linked with mechanical parts such as a cam, the hammer mechanism is downsized, and the degree of freedom of arrangement is increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a sounding device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a circuit configuration of the device.

FIG. 3 is a block diagram showing a configuration example of a control circuit of the device.

FIG. 4 is a schematic configuration diagram of a sounding device according to another embodiment of the present invention.

[Explanation of symbols]

1 ... bar bell stand, 2,2a-2e ... bar bell, 3 ... screw, 4,4
a to 4e ... Hammer mechanism, 5 ... Rod hammer, 6 ... Solenoid coil, 7 ... Collar, 8 ... Spring, 9 ... Cushioning material, 10
... indicator member, 11 ... control circuit, 12 ... mode switch,
13 ... Movement, 14 ... Reset switch, 21 ...
Resistance, 22 ... Transistor, 23 ... Variable resistance, 24 ... Diode.

Claims (1)

[Scope of utility model registration request] 1. A rod bell fixed to a resonance case, a rod bell having one end fixed to the rod bell and a free end at the other end, and a rod bell movably provided in a direction orthogonal to the bell bell. A sounding device comprising a solenoid type hammer mechanism for driving the rod-shaped hammer driven by a solenoid coil to strike the rod bell, and a current supply means for supplying a current to the hammer mechanism.