JPH074953U - Anomaly Geneva - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an anomalous geneva that transmits anomalous intermittent motion. [Structure] A pin gear 41 rotatably driven having a plurality of pin shafts 3a _{1 to} 3d ₁ arranged on the same circumference at different intervals and the pin shafts 3a _{1 to} 3d ₁ are fitted together. The toothless gear 51 has a plurality of radial shaft grooves 51a to be engaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an anomalous Geneva that transmits the rotational motion of a pin gear as an irregular intermittent motion to a toothless gear.

[0002]

[Prior art]

 As a means for transmitting the intermittent motion, there is a toothless gear. Further, Geneva gears in which only one tooth of a pin gear is left and the other has a missing tooth are also well known.

In the case of the Geneva gear, while the pin shaft of the pin gear makes one rotation, the chip gear rotates only when the pin shaft fits in the axial groove formed radially in the gear. It is like this.

[0004]

[Problems to be solved by the device]

 By the way, for example, when a device that associates a plurality of rotating bodies with each other to perform an irregular intermittent rotation motion is used, the conventional Geneva gear cannot be used as it is.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an anomalous Geneva capable of imparting an irregular intermittent rotational motion to a toothless gear.

[0006]

[Means for Solving the Problems]

 The present invention comprises means for solving the above-mentioned problems as follows. That is, a pin gear that is rotationally driven with a plurality of pin shafts that are arranged on the same circumference at different intervals, and a chipped tooth that has a plurality of radial shaft grooves into which the pin shafts are fitted. It is characterized by consisting of gears.

[0007]

The pin shaft of the pin gear is sequentially and irregularly and intermittently fitted into the shaft groove of the chipped gear, and the rotational motion from the pin gear is irregularly and intermittently transmitted to the chipped gear.

[0008]

【Example】

Hereinafter, an embodiment of the irregular Geneva of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of an anomalous Geneva 1 having two plates. Reference numeral 2 is a disk fixed to a rotating shaft 6 and rotationally driven in the direction of arrow C, and 3a _{1 to} 3d ₁ are different from each other on the disk 2. A pin gear 41 is formed by these pin shafts that are fixedly attached at positions on the same circumference with a space therebetween, and the pin gear 41 is formed on the rotary shaft 6 at a distance from the pin gear 41. One of the pin gears 42 is arbitrarily mounted with a phase difference of 45 degrees in the rotation direction.

Reference numeral 51 is a toothless gear that is driven by one pin gear 41, and four shaft grooves 51a, into which the pin shafts 3a _{1 to} 3d ₁ of _one pin gear 41 are fitted, are notched in a cross-radial shape. The rotary shaft 51b is fixed to the center of the rotary shaft 51b.

Reference numeral 52 denotes the other toothless gear that is driven by the other pin gear 42, and has four shaft grooves 52a, ... Which allow the pin shafts 3a _{2 to} 3d ₂ of the other pin gear 42 to fit thereinto. The notches are radially formed, and the rotating shaft 52b is fixed to the central portion thereof.

FIG. 2 shows an object device 10 using the above-mentioned anomalous Geneva 1, where 11 is a drum in which a child or the like enters and rotates, and 12 to 18 are anomalous Geneva 1 by the rotational force of the drum 11. It is an object mirror that performs anomalous rotational movements individually via, and the individual movements are disjointed and unified, and a unique puzzle-like effect is created by the irregular intermittent movement that combines rotation and stillness. It is a display device that can be displayed at exhibitions. The rotational force of the drum 11 is configured such that a constant rotational force is output to the drive pulley via the speed governor 19.

3 to 4 show a drive system for driving the object mirrors 12 to 18, and the rotary shaft 6 to which both pin gears 41 and 42 are attached supports the object mirrors 12 to 18. A pulley 7 is pivotally supported on the frame 9, and one end of which is fixed with a pulley 7 to which a rotational force is transmitted from a drum 11 in a direction of an arrow C via a belt.

The rotary shafts 51b and 52b of the two toothless gears 51 and 52 are arranged in parallel on both sides of the support shafts 12a to 18a fixed to the lower portions of the respective object mirrors 12 to 18, and are pivotally supported by the base frame 9. One of the rotating shafts 51b is supported by supporting shafts 12a, 14a, 16a, 18a fixed to the lower portions of the respective object mirrors 12, 14, 16, 18 via a bevel gear 8 ,. Are transmission-coupled to the support shafts 13a, 15a, 17a of the object mirrors 13, 15, 17 via bevel gears 8 ,. The support shafts 12a to 18a of the respective object mirrors 12 to 18 are pivotally supported by bearings 12b to 18b fixed to the bottom of the base frame 9.

As shown in FIG. 4, each of the object mirrors 12 to 18 has a different shape, and sequentially from an initial pattern (see FIG. 6A) in which the drum mirrors 12 are flush with each other as the drum 11 rotates. The patterns change as shown in FIGS. 6 (B) to 6 (H), and the viewer can be fascinated by the dynamic changes in the landscape such as the reflection of each mirror and the surrounding of the mirror during rotation.

As described above, the irregular Geneva 1 makes it possible to rotate two rows of object groups each having a different shape in a constant and various pattern. By the way, both rotary shafts 51b and 52b turn by 90 degrees, and the timing is as shown in FIG.

[0016]

[Effect of device]

 As described above, according to the anomalous Geneva of the present invention, a pin gear that is rotationally driven with a plurality of pin shafts that are arranged on the same circumference at different intervals and that pin shaft is provided. Since it is composed of a toothless gear having a plurality of radial shaft grooves to be fitted thereinto, an irregular intermittent motion can be transmitted at a desired timing by appropriately setting the interval between the pin shafts.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the irregular Geneva of the present invention.

FIG. 2 is a perspective view of an object device using the same irregular Geneva.

FIG. 3 is a perspective view of the anomalous Geneva.

FIG. 4 is a front view showing the arrangement of the same object mirrors.

FIG. 5 is a cross-sectional view showing a drive system of the respective object mirrors.

FIG. 6 is an explanatory diagram showing a turn pattern of each of the object mirrors.

FIG. 7 is a timing chart of rotation and rest of both rotary shafts.

[Explanation of symbols]

3a ₁ ~ 3d ₁ , 3a ₂ ~ 3d ₂ ... pin shaft, 41, 42 ... pin gear,
51, 52 ... missing tooth gear, 51a, 52a ... shaft groove.

Claims (1)

[Scope of utility model registration request] 1. A pin gear rotationally driven having a plurality of pin shafts arranged on the same circumference at different intervals, and a plurality of radial shaft grooves into which the pin shafts are fitted. An anomalous Geneva, which is characterized by comprising a toothless gear having.