JPH0576498U - Action mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an action mechanism in which a variety of movements can be obtained by providing a time difference between the movements of a plurality of movable members. [Structure] A cam member 7 (70, 71, 72) rotated by a rotary drive source 3 and a plurality of movable members 21, 22, 23, 26 which are movable by engaging with the cam member.
And a plurality of movable members 21, 22, 23,
Each of the 26 is sequentially arranged at a position where it can be engaged with the cam members 70, 71, 72.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an action mechanism in a multi-axis action toy in which a plurality of movable members imitating humans or animals are actuated by a rotary drive source such as a full-fledged or motor.

[0002]

[Prior Art]

 A multi-axis action mechanism that operates a plurality of movable members by taking out the rotational force of a music box that uses the whole dance as a rotational drive source is already well known. As the method of operating the movable member, a method of directly rotating the movable member by the rotational force extracted from a rotating member such as a drum, or a method of transmitting the extracted rotational force to the movable member via a cam or lever and operating it The method of making it known is known.

[0003]

[Problems to be solved by the device]

 In the conventional action mechanism, even if there are a plurality of movable members, it is common to operate them at the same timing, and the movement of each movable member is simple, and it tends to be uninteresting.

Therefore, an object of the present invention is to provide an action mechanism that can obtain a variety of movements by providing a time difference in the movement of a plurality of movable members.

[0005]

[Means for Solving the Problems]

 The action mechanism of the present invention comprises a cam member that is rotated by a rotary drive source and a plurality of movable members that are movable by engaging with the cam member. Each of the plurality of movable members is sequentially moved to the cam. It is characterized in that it is arranged at a position where it can be engaged with a member.

[0006]

[Action]

 The plurality of movable members are sequentially operated as the cam member rotates.

[0007]

【Example】

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

In FIGS. 1 to 4, a substrate 2 is fitted and fixed to the case 1. A music box movement 3 as a rotary drive source is fixed to the substrate 2. The music box movement 3 has a structure in which a well-known whole dance is used as a drive source, and includes a frame 3a, a barrel 3b provided in this frame, a drum 3c which is driven and rotated by the barrel stored in the barrel, It is composed of a vibrating plate 3d that is played by the drum to produce a sound, and a governor mechanism 3e that regulates the rotation of the drum. The whole housed in the barrel 3b is wound up by the hoisting key 3f projected from the substrate 2. The drum 3c is provided with a drum gear 3h that rotates integrally with the drum 3c.

A base end portion 4a of a bracket 4 bent in a U-shape is caulked and fixed to the frame 3a. An output shaft 5 is rotatably supported on a tip portion 4b of the bracket 4 via a bearing 6.

A cam member 7 is fixed to the output shaft 5. In the illustrated example, the cam member 7 includes a first cam portion 70 having a cam profile as shown in FIG. 6, a second cam portion 71 made of a sector gear as shown in FIG. and a third cam portion 72 having a cam profile as shown in b).

The first cam portion 70 is integrated with the output shaft 5 by screwing a screw portion 70 b formed on the base end portion 70 a into the output shaft 5. A large diameter step portion 70c and a small diameter step portion 70d are formed on the base end portion 70a, respectively. A hole 71a formed at the base end of the second cam portion 71 is fitted to the large diameter step 70c, and a hole 72a formed at the base end of the third cam portion 72 is fitted to the small diameter step 70d. Are fitted. The first cam portion 70, the second cam portion 71, and the third cam portion 72 are fixed to each other at relative positions as shown in FIG. 1, for example.

An output gear 8 composed of a crown gear is fixed to the end of the output shaft 5 protruding from the bracket 4 and meshes with the drum gear 3h.

As shown in FIG. 1, reference numeral O1 indicates the trajectory of the tip end portion 70e of the first cam portion 70, reference numeral O2 indicates the trajectory of the tooth portion 71b of the second cam portion 71, and reference numeral O3 indicates the third cam portion. The locus | trajectory of the arcuate holding edge 72b of the part 72 is shown.

A curved pushing edge 70 f is formed at one side edge of the first cam portion 70. A pushing edge 72c is formed along the radial direction of the third cam portion 72.

On the other hand, as shown in FIG. 5, the front side plate 10 of the case 1 is formed with shaft holes 11 and 12 for supporting a plurality of movable members and arcuate elongated holes 13 and 14, respectively. As shown in FIGS. 1A, 2 and 4, a first rotary shaft 21 that supports a first movable member (not shown) is rotatably supported in the shaft hole 11. The first rotary shaft 21 is restricted from entering the case by a washer 21a press-fitted into the first rotary shaft 21. A pinion 21b having a large diameter that is engaged with and disengaged from a tooth portion 71b of the second cam portion 71 is fixed to an inner end portion of the case of the first rotating shaft 21. That is, the teeth of the pinion 21b are located on the locus O2.

As shown in FIGS. 1A, 3 and 4, a second rotary shaft 22 that supports a second movable member is rotatably supported in the shaft hole 12. The second rotary shaft 22 is restricted from moving in the axial direction by a washer 22a, and a pinion 22b having a small diameter is fixed to the inner end of the case. The pinion 22b is arranged at a position where it is engaged with and disengaged from the tooth portion 71b of the second cam portion 71.

Movable parts (not shown) suitable for rotating operation are attached to the first rotary shaft 21 and the second rotary shaft 22, and the pinions fixed to the movable parts are attached to the second cam part 7. When it is rotated at 1, it rotates at a speed according to the diameter of the pinion.

As shown in FIGS. 1A, 2 and 4, a first swing shaft 23 supporting a reciprocating third movable member is slidably supported in the elongated hole 13. There is. The first swing shaft 23 is restricted from moving in the axial direction by washers 23a and 23b press-fitted so as to sandwich the case front side plate 10. The in-case protruding end portion 23c of the second swing shaft 23 extends to the rotation region of the first cam portion 70.

As shown in FIG. 1A, a pin 25 supporting a torsion coil spring 24 is fixedly planted on the front side plate 10 of the case 1. One end 24a of the torsion coil spring 24 is engaged with the second swing shaft 23, and the other end 24b is locked with a pin 24c fixedly implanted in the case. The first swing shaft 23, that is, the third movable member is urged by the elastic force of the torsion coil spring 24 serving as the returning means to return to the original position of the one end 13a of the elongated hole 13.

As shown in FIGS. 1A, 3 and 4, a second swing shaft 26 that supports a reciprocating fourth movable member is slidably supported in the elongated hole 14. There is. The second swing shaft 26 is restricted from moving in the axial direction by a washer 26a press-fitted so as to sandwich the case front side plate 10 and a tip portion 27a of a swing lever 27. A washer 26c is press-fitted into an end portion 26b of the second swing shaft 26 which protrudes from the tip portion 27a.

The swing lever 27 is swingably supported by the case front side plate 10 by a pin 28. A torsion coil spring 29 is wound around the pin 28, one end 29a of which is locked to the tip portion 27a of the rocking lever 27, and the other end 29b of which is locked to a pin 29c fixedly implanted in the case. ing. The second swing shaft 26 connected to the swing lever 27 is given a habit of moving toward the original position of the one end 14a of the elongated hole 14 by the elastic force of the torsion coil spring 29 as the returning means. .. The cam follower 27b formed at the other end of the swing lever 27 extends into the rotation area of the third cam portion 72.

The operation of the embodiment configured as described above will be described. In FIG. 2, the hoisting key 3f is rotated to wind up the whole dance. At this time, the cam member 7 is assumed to be in the position shown in FIG. The first oscillating shaft 23 and the second oscillating shaft 27 are positioned at the respective original positions of the elongated holes 13 and 14 by torsion coil springs 24 and 29.

When the hand is released from the hoisting key 3f or the stopper of the music box (not shown), the drum 3c rotates in the direction of the arrow by the releasing force of the whole dance. When the drum rotates, a pin provided on the drum flips a valve of the diaphragm 3d to play a tune. On the other hand, the output gear 8 meshing with the drum gear 3h that rotates integrally with the drum 3c rotates in the direction of arrow a in FIG. The rotation of the output gear 8 is transmitted to the cam member 7 via the output shaft 5 and rotates the member in the arrow a direction.

In FIGS. 1, 3, and 4, when the tooth portion 71b of the second cam portion 71 meshes with the pinion 22b, the pinion rotates the second rotating shaft 22 in the direction of arrow b. When the second rotating shaft 22 rotates, the second movable member (not shown) held by the shaft rotates in the same direction.

When the engagement between the tooth portion 71b of the second cam portion 71 and the pinion 22b is broken or is just before that, the pushing edge 70f of the first cam portion 70 of the cam member 7 rotating in the direction of arrow a is moved. Engages with the projecting end portion 23c (see FIG. 2) of the first swing shaft 23 and pushes the shaft in the direction of arrow c along the elongated hole 13 against the elastic force of the torsion coil spring 24. .. The pushed second swing shaft 23 returns to its original position by the elasticity of the torsion coil spring 24 at the time point when the pushing shaft 70f or the leading edge 70e of the first cam portion 70 is disengaged from the second swing shaft 23. Return in the direction of the broken arrow.

Following the return of the second swing shaft 23, the pushing edge 72 c of the third cam portion 72 engages with the cam follower 27 b of the swing lever 27, and the lever is rotated counterclockwise about the pin 28. Rock to. When the swing lever 27 swings, the second swing shaft 26 swings in the direction of arrow d. The cam follower 27b is held in the swing position by contacting the holding edge 72b of the third cam portion 72. When the cam follower 27b is disengaged from the holding edge 72b, the swing lever 27 is returned to its original position by the elasticity of the torsion coil spring 29.

After or before the holding edge 72b releases the second movable member (26), the tooth portion 71b of the second cam portion 71 engages with the pinion 21b to move the first rotary shaft 21 in the direction of arrow e. Rotate to. The rotation of the first rotating shaft 21 causes the first movable member (not shown) to rotate.

Hereinafter, the cam member 7 engages with the second rotary shaft 22, the first swing shaft 23, the second swing shaft 26, and the first rotary shaft 21 in this order, and moves the movable member supported by these members. Move sequentially. The rotation of the cam member 7 is continued until the release force of the whole dance disappears, in other words, until the music box stops playing.

As described above, when the cam member 7 including the plurality of cam portions rotates, the plurality of movable members can be sequentially rotated and swung. When the movement of the movable member is observed by the movement of the shaft shown in FIG. 4, the shaft 21 rotates, the shaft 22 rotates, the shaft 23 rocks, and then the shaft 26 rocks. That is, as the cam member, which cannot be seen from the outside, rotates, the plurality of movable members sequentially operate with a time difference. In other words, the movable member will move with the passage of time, and it will be observed that the action of the toy is interesting.

In the illustrated embodiment, the cam member 7 is an example in which the three cam portions 70, 71, 72 are integrated. Forming a plurality of cam parts separately and integrating them has the advantage that the operation timing of the movable member operated by each cam can be different. For example, if the cross-sectional shape of the output shaft 5 is a regular polygon and the mounting holes of the multiple cam parts to be attached to this are regular polygons and they are fitted in a non-rotating state, the operation timing of the movable parts by each cam will be different. It becomes possible. It should be noted that the cam member may be formed of a single cam body having a plurality of cam portions 70A, 71A, 72A as shown in FIG.

Further, in the illustrated example, since the torsion coil springs 24 and 29 are made to act on the first swing shaft 23 and the second swing shaft 26 as the original position returning means, the arrangement of these shafts is provided. The direction (vertical direction or horizontal direction) may be selected, but as shown in FIG. 4, when these axes are arranged in the horizontal direction and the elongated holes 13 and 14 are formed along the vertical direction, It is also possible to return the movable member by its own weight. Therefore, the returning means is not limited to the spring, but includes returning by its own weight.

Further, the plurality of movable members in the illustrated embodiment have two simple movements of rotation and swing, but the movable member may be moved forward and backward by adding an end face cam. It is also possible to change the shape of the cam to move the movable member on different tracks. Of course, a motor may be used as the rotation drive source.

[0033]

[Effect of the device]

 As described above, according to the present invention, since a plurality of movable members of a multi-axis action toy can be sequentially moved with a time lag, a variety of interesting actions can be obtained.

[Brief description of drawings]

1A is a front sectional view of an action mechanism showing an embodiment of the present invention, and FIG. 1B is a front view showing relative positions of a rotary drive source and a cam member.

FIG. 2 is a side sectional view of the above.

FIG. 3 is a partial plan sectional view of the above.

FIG. 4 is a perspective view of the above.

FIG. 5 is a front view of the case.

6A is a front view of a first cam portion, and FIG. 6B is a partial cross-sectional plan view of the same.

7A is a front view of a second cam portion, and FIG. 7B is a front view of a third cam portion.

8A is a front view showing an example of a rocking lever provided between a cam member and a movable member, and FIG. 8B is a partial cross-sectional plan view of the same.

FIG. 9 is a perspective view showing another example of a cam member.

[Explanation of symbols]

 1 ... Case 2 ... Substrate 3 ... Music Box Movement 3b ... Incense Box 3h ... Drum Gear 4 ... Bracket 5 ... Output Shaft 8 ... Output Gear 7 ... Cam Member 70 ... 1st cam part 71 ... 2nd cam part 72 ... 3rd cam part 21 ... 1st rotating shaft which attaches a 1st movable member 22 ... 2nd which attaches a 2nd movable member Rotating shaft 23 ... Second swing shaft for mounting third movable member 26 ... Second swing shaft for mounting fourth movable member 24 ... Returning means (torsion coil spring) 29 ... Returning means ( Torsion coil spring)

Claims (3)

[Scope of utility model registration request] 1. A cam member which is rotated by a rotary drive source, and a plurality of movable members which are movable by engaging with the cam member. An action mechanism arranged at a position where it can be engaged. 2. The action mechanism according to claim 1, further comprising return means for returning at least one of the movable members to the original position. 3. The action mechanism according to claim 1, wherein the cam member has a plurality of cam portions.