JPH0625889U - Motor driven music box - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The rotation transmission system between the drive motor and the rotary drum can be engaged and disengaged to allow versatility and easy output of action. The purpose is to provide a motor-driven music box. A drive motor 2 having a rotating shaft 2a, a worm 6 provided on the rotating shaft 2a, a switch means 4 (worm wheel 4a) engaging with the worm 6, and a vibration valve 3
It has a rotary drum 3b for elastically ejecting c and a drum drive shaft 9 (worm 9a) rotatably coupled to the drum 3b, and the switch means 4 (switch pin 4c) can be detachably attached to the drive shaft 9 (switch plate 9d). Set up in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor-driven music box in which a rotating drum is driven by a motor.

[0002]

[Prior art]

 A motor-driven music box that uses a motor as a drive source is a type that decelerates the rotation of the drive motor, transmits it to a rotating drum, drives this rotationally, and plays a vibration valve on the drum to play a song. Are known. For example, in the motor-driven music box described in Japanese Utility Model Laid-Open No. 60-68595, the rotation of the drive motor is decelerated by a reduction gear train including a worm and transmitted to a rotating drum to rotate the drum. It is a structure that plays a song by playing.

[0003]

[Problems to be solved by the device]

 A conventional motor-driven music box has a drive motor, a reduction gear train, a rotary drum, and a vibrating valve supported on a single mounting plate (frame), and has a structure for specific product specifications. Therefore, there is a problem that it cannot be diverted to other specifications, and it is necessary to redesign according to new specifications, which inevitably leads to cost increase. Further, in the above-mentioned conventional music box, if an attempt is made to obtain an action drive output for moving a doll or the like by utilizing the rotation of the drive motor, there is a design problem that it is difficult to obtain a high-speed rotation output. Furthermore, since the reduction gear train consisting of spur gears is adopted, the tooth profile of the gear is extremely small, and the problem remains that the automatic assembly process is limited.

Therefore, an object of the present invention is to allow the rotation transmission system between the drive motor and the rotary drum to be disengaged so that the combination can be freely made and the action output can be easily taken out. It is in the provision of the motor-driven music box.

[0005]

Means for Solving the Problems A motor-driven music box of the present invention comprises a drive motor having a rotary shaft, a speed reducing means provided on the rotary shaft, a switch means engaging with the speed reducing means, and a vibration valve. It is characterized in that it has a rotating drum to be elastically driven, and a drum drive shaft rotatably coupled to this rotating drum, and the switch means is detachably provided on the drum drive shaft.

[0006]

[Action]

 When the drive motor rotates, this rotation is transmitted to the switch means via the speed reducing means. When the switch means is engaged with the drum drive shaft for driving the rotary drum, the rotation of the drive motor is transmitted to the rotary drum, and the rotary drum is rotated to flip the vibrating valve to ring the movement. When the switch means is disengaged from the drum drive shaft, the movement does not sound.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

In FIG. 1 to FIG. 3, reference numeral 1 indicates a mounting plate that supports each component described later. A drive motor 2, a movement 3 and a switch means 4 are respectively supported on the mounting plate 1.

As shown in FIG. 5, the mounting plate 1 has motor receiving portions 1a and 1b into which the bearings 2b and 2c of the rotary shaft 2a of the drive motor 2 are fitted, and the motor receiving portions 1a and 1b. Four columns 1c that abut the cover member 5 that holds the drive motor 2 are fixed, and projections 1d and 1e having bearing grooves for the output shaft, which will be described later, are formed.

The drive motor 2 is a direct current small-sized motor, and a worm 6 as a speed reducing means is press-fitted into the rotary shaft 2a thereof. The bearings 2b and 2c of the drive motor 2 fitted in the motor receiving portions 1a and 1b are retained by the motor pressing portions 5a and 5b (see FIG. 7) formed on the cover member 5. The cover member 5 is fixed to the column 1c with a screw 7.

The movement 3 includes a frame 3a fixed to the mounting plate 1 with screws 8, a rotary drum 3b rotatably supported by the frame, and a vibration valve repelled by a pin formed on the outer peripheral surface of the drum. It consists of 3c. As shown in FIG. 4, a worm wheel 3e and a shaft portion 3f are integrally formed on one end plate 3d of the rotary drum 3b. The shaft portion 3f is rotatably fitted in the bearing hole 3h of the protrusion 3i provided on the frame 1. A taper shaft 3k is rotatably fitted to the other end plate 3j of the rotary drum 3b. The taper shaft 3k is prevented from coming off by a screw 3n inserted in a protrusion 3m of the frame 3a. The vibrating valve 3c is fixed to the frame 3a with a screw 3s, with its tip end being close to the peripheral surface of the rotary drum 3b.

A worm 9a provided on the drum drive shaft 9 meshes with the worm wheel 3e. The drum drive shaft 9 is rotatably supported by a bearing member 10 fixed to the frame 3a with screws 10a and 10b. As shown in FIG. 9, the bearing member 10 includes a bearing hole 10c for supporting one end 9b of the drum driving shaft 9 having a small diameter and an inverted U-shaped shaft pressing groove 10d for pressing the middle portion of the shaft from above. Has been formed. The drum drive shaft 9 is restricted from moving in the axial direction.

As shown in FIGS. 1 and 3, in the vicinity of the other end portion 9c of the drum drive shaft 9, a switch plate 9d that engages with and disengages from the switch means 4 described below is integrally provided. As shown in FIG. 8, the switch plate 9d includes a hole 9da that is press-fitted into the drum drive shaft 9 and an engaging portion 9db that engages with a switch pin (described later).

The switch means 4 is a means for selectively transmitting the rotation of the drive motor 2 to the movement 3, and a worm wheel 4a that constantly meshes with a worm 6 provided on a rotation shaft 2a of the drive motor 2, It is composed of a slidable output shaft 4b which is integral with this. A switch pin 4c protruding from and disengaging from the switch plate 9d is formed on the end surface of the worm wheel 4a.

As shown in FIG. 6, the output shaft 4b has a support hole 4d formed at one end thereof for rotatably and slidably supporting the other end 9c of the drum drive shaft 9. The output shaft 4b is rotatable by the bearing grooves 1da, 1ea (see FIG. 5) of the protrusions 1d, 1e formed on the mounting plate 1 and the shaft retainers 5c, 5d (see FIG. 7) formed on the cover member 5. Moreover, it is slidably supported.

The motor-driven music box configured as described above can be selected from various types according to the specifications desired by the user. First, the structure as a simple music box movement will be described according to the assembly procedure. In this case, as shown only in FIG. 1, the output shaft 4b has a retaining ring (not shown) such as an E-ring for restricting axial movement at a position where the switch pin 4c is engaged with the switch plate 9d. The groove 4e into which the () is fitted is formed. 1 to 3, after the movement 3 is screwed and fixed to the mounting plate 1, the drive motor 2 is dropped into the motor receiving portions 1a and 1b. Next, the switch means 4 is dropped into the bearing grooves 1d and 1e to engage the worm 6 with the worm wheel 4a, and the other end 9c of the drum drive shaft 9 is inserted into the support hole 4d to insert the bearing member 10 into the bearing member 10. Secure it to the frame 3a. After that, the cover member 5 is fixed to the mounting plate 1 with the screw 7.

The assembly order is not limited to the above. For example, the drum drive shaft 9 is incorporated in the movement 3 in advance, the drive shaft end portion 9c is inserted into the switch means 4 dropped into the mounting plate 1, and then the movement 3 is fixed to the mounting plate 1. May be. In addition, a drive unit in which the drive motor 2 and the switch means 4 are assembled to the mounting plate 1 and a plurality of types of movement units corresponding to the song in which the drum drive shaft 9 is assembled are prepared, and the required song Both units may be combined depending on the requirements. In any case, the engagement of the gears at the time of assembly is easy because the worm and the worm wheel are simply meshed with each other.

The rotation of the drive motor 2 is decelerated and transmitted from the worm 6 to the worm wheel 4a of the output shaft 4b. The rotation of the shaft 4b is transmitted from the switch pin 4c to the switch plate 9d and then to the drum drive shaft 9. The rotation of the drive shaft 9 is decelerated and transmitted to the worm wheel 3e via the worm 9a to rotationally drive the rotary drum 3b at a constant speed, and resonates the vibrating valve 3c to play a song.

Next, an example of a type in which the driving force of the drive motor 2 is taken out to drive an action part such as a doll according to the sound of the music box will be described. In this type, the output shaft 4b is not provided with the groove 4e, or is provided with no retaining ring. The structure of the drum drive shaft 9 and the movement 3 driven thereby is the same as that of the example shown in FIG.

In the case of configuring this type, as shown in FIG. 10, the output shaft 4 b of the switch means 4 is provided with a grooved wheel 40 in the middle part of the shaft and an output worm 41 at the shaft end 4 ba. Each is provided. A fork portion 42a of an operation lever 42 rotatably supported by the mounting plate 1 is loosely fitted to the grooved wheel 40, and the output shaft 4b is moved in the axial direction by rotating the lever 42. Can be made. As shown in FIG. 11, the operating lever 42 is attached to the mounting plate 1 by a pin 44 via a friction spring 43 so as to hold a selected position of the switch means 4.

In FIG. 10, a worm wheel 45 is constantly meshed with the output worm 41. The worm wheel 45 is integral with an external output shaft 46 that supports an action component such as a doll (not shown). The external output shaft 46 is rotatably supported by the mounting plate 1, the cover member 5, or the action mechanism section.

When the operation lever 42 is placed at the position shown in FIG. 10 and the switch pin 4c is engaged with the switch plate 9d, when the drive motor 2 decelerates and drives the worm wheel 4a, The rotation of the output shaft 4b is transmitted to the drum drive shaft 9 via the switch pin 4c and the switch plate 9d to drive the movement 3 to play the music box. This action is the same as the type described above. On the other hand, the rotation of the rotating output shaft 4b decelerates and externally drives the external output shaft 46 via the output worm 41 and the worm wheel 45 to drive an action component (not shown).

In the state shown in FIG. 10, when the operation lever 42 is rotated in the direction of the arrow, the fork portion 42 a slides the output shaft 4 b leftward via the grooved wheel 40. The position of the operating lever 42 is held by the friction spring 43. When the output shaft 4b moves, the output worm 41 and the worm wheel 45 remain engaged, but the switch pin 4c and the switch plate 9d are disengaged. At this time, if the drive motor 2 is rotating, the rotation transmission to the movement 3 is cut off and the sounding stops. On the other hand, since the output worm 41 continues to drive the external output shaft 46, the action parts continue to operate. When the operation lever 42 is returned to the position shown in FIG. 10, the sound of the music box is restored.

When a type that drives an external output shaft is configured, the configurations of the drive motor 2 and the movement 3 and their mounting positions are the same as in the above-mentioned example, and combinations according to the specifications are possible.

The switch means 4 shown in FIG. 10 is configured to continue the operation of the action parts and stop the movement 3, but either the action parts and the movement 3 are operated at the same time or one of them is operated. The configuration of the switch means that can be used will be described with reference to FIG.

A worm wheel 4a meshing with a worm 6 as a speed reducing means provided on the rotary shaft 2a of the drive motor 2 has an end 9c of a drum drive shaft 9 which is located close to each other on the same axis. It is rotatably inserted through the end 4f of the output shaft 4b. In this case, both shafts 9 and 4b are provided so that the movement in the axial direction is restricted. Switch pins 4c and 4cA are provided on both end surfaces of the worm wheel 4a, respectively. Switch plates 9d and 9dA are provided on the shafts 9 and 4b, respectively.

The distance between the switch plates 9d and 9dA is set so that the distance between the tips of the switch pins 4c and 4cA is also reduced. Further, the length of the boss portion 4aa of the worm wheel 4a is set so that the worm wheel 4a can be moved between the plates 9d and 9dA while being fitted to the shafts 9 and 4b. An operating lever (not shown) is engaged with the worm wheel 4a to slide the wheel.

The position of the switch means 4A shown in FIG. 12 shows a state in which the switch pin 4cA of the worm wheel 4a is engaged only with the switch plate 9dA of the output shaft 4b. It is transmitted only to the output shaft 4b via the worm wheel 4a, the switch pin 4cA, and the switch plate 9dA. Therefore, in this selected position, only the action component (not shown) is activated.

In the state shown in FIG. 12, when the worm wheel 4a is moved in the direction of arrow a, two modes can be selected. First, when the worm wheel 4a is slightly moved in the direction of arrow a, the switch pin 4cA engages with the switch plate 9dA, and the switch pin 4c engages with the switch plate 9d. In this state, the rotation of the worm wheel 4a is transmitted to both the drum drive shaft 9 and the output shaft 4b, so that the movement 3 and the action component operate simultaneously.

In FIG. 12, when the worm wheel 4a is fully moved in the direction of arrow a, the switch pin 4cA and the switch plate 9dA are disengaged, and only the switch pin 4c and the switch plate 9d are engaged. In this mode, the rotation of the drive motor is transmitted only to the drum drive shaft 9, the movement 3 is actuated and sounds, and the action parts are deactivated.

In the example shown in FIG. 12, the configurations of the drive motor 2 and the movement 3 may be the same as those of the above-described example. Therefore, various types of music boxes can be constructed by changing the configurations of the switch means 4 and the output shaft 4b.

According to the illustrated embodiment, the rotation of the drive motor is reduced by the combination of the two-stage worm and worm wheel, so that a large reduction ratio can be obtained with a small number of parts and quality troubles can be reduced. The cost can be reduced. In addition, since the tooth profile of the rotation transmission system can be increased, the assemblability is good, and there are no restrictions on assembling different types.

[0033]

[Effect of device]

 As described above, according to the present invention, the movement section, the drive motor section, and the switch means are independent of each other, so that the degree of freedom in designing according to the customer's product specifications is increased. Further, since the movement section and the drive motor section can be used as common parts, the versatility of the parts can be greatly improved and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a motor-driven music box showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a positional relationship between a drive motor and switch means.

FIG. 3 is a partial cross-sectional front view showing a system from a drive motor to a movement.

FIG. 4 is a partially cutaway plan view showing one supporting structure of the rotary drum.

5A is a plan view showing an example of a mounting plate, and FIG. 5B is a front view thereof.

FIG. 6 is a partial cross-sectional view showing an example of an output shaft forming a part of a switch means.

7A is a bottom view of the cover member, and FIG. 7B is a side view of the same.

FIG. 8 is a side view showing an example of a switch plate.

9A is a plan view showing an example of a bearing member, FIG.
[Fig. 3] is a sectional view taken along line bb in (a), and (c) is a left side view of the same.

FIG. 10 is a partially cutaway plan view showing an example of a structure for switching the switch means.

FIG. 11 is a cross-sectional view showing an example of a support structure of an operation lever.

FIG. 12 is a vertical cross-sectional view showing another configuration of the switch means.

[Explanation of symbols]

 1 ... Mounting plate 2 ... Drive motor 2a ... Rotating shaft 3 ... Movement 3b ... Rotating drum 3c ... Vibration valve 3e ... Worm wheel 4 ... Switch means 4a ... -Worm wheel 4b ... Output shaft 4c ... Switch pin 5 ... Cover member 6 ... Worm as deceleration means 9 ... Drum drive shaft 9a ... Worm 9d ... Switch plate 10. ..Bearing members

Claims (1)

[Scope of utility model registration request] 1. A drive motor having a rotary shaft, a speed reducing means provided on the rotary shaft, a switch means engaging with the speed reducing means, a rotary drum for elastically oscillating a vibration valve, and a rotary drum for rotating the rotary drum. A motor-driven music box having a drum drive shaft coupled thereto and having the switch means detachably provided on the drum drive shaft.