JPH06100255B2 - Forward / reverse rotation converter for output shaft - Google Patents

Description

TECHNICAL FIELD The present invention relates to a forward / reverse rotation conversion device for an output shaft.

(Object of the Invention) It is an object of the present invention to propose an output shaft forward / reverse rotation conversion device having a simple structure capable of converting the rotation of an output shaft between normal and reverse without converting the rotation of an engine or a motor. To do.

(Means for Achieving the Object) As a means for achieving the above object, the output shaft forward / reverse rotation converting device according to the present invention is characterized by having the following requirements.

(A) Two clutch means for separately transmitting the driving force from the drive unit via the gear to one output shaft.

(B) The clutch means includes a centrifugal clutch portion that can be pressed into and separated from another two gears that are meshed with a gear fixed to the output shaft, and a disc clutch linked to the centrifugal clutch portion. And a transmission unit that transmits the driving force from the drive unit to the disc clutch unit.

(Operation and Effect of the Invention) According to the output shaft forward / reverse rotation conversion device of the present invention, as described above, the driving force from the drive unit is separately transmitted to one output shaft via the gears. Is provided with two clutch means, and each of the clutch means has a centrifugal clutch portion capable of press-contacting and separating from another two gears that are meshed with a gear fixed to the output shaft, and the centrifugal clutch portion. It is composed of a disc clutch part which is linked, a disc clutch part for transmitting the drive force from the drive part, and a transmission part for transmitting the drive force from the drive part to the disc clutch part. When the transmission parts provided in the two clutch means are inoperative, the driving force from the drive part is not transmitted to the disc clutch part, so that the rotation of the output shaft is kept stopped. Then, when the transmission portion of one of the two clutch means is actuated and moved in the axial direction, the clutch portion of the disc of the clutch means is brought into close contact, and the driving force from the drive portion is the circle of the clutch means. It is transmitted to the plate clutch portion, whereby the centrifugal clutch portion rotates, and at the same time, the centrifugal clutch can positively rotate the output shaft via another gear that is meshed with the gear that presses and separates.
Further, when the other clutch means transmission section is actuated and moved in the axial direction, the disc clutch section of the clutch means is brought into close contact, and the driving force from the drive section is transmitted to the disc clutch section of the other clutch means, As a result, the centrifugal clutch section rotates, and at the same time, the centrifugal clutch can reversely rotate the output shaft via another gear that is meshed with the gear that press-contacts and separates. In this case, the one clutch means is in the released state.

Therefore, when the forward / reverse rotation converting device for the output shaft is applied to, for example, a radio-controlled traveling toy, the traveling toy can be moved forward or backward without converting the rotation of the engine, which is an interesting traveling game. In addition to being enjoyable, it has a simple structure and can be manufactured at low cost, and there is no risk of breakdown.

(Example) Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 (a) and (b) and FIGS. 2 (a) and (b), reference numeral A represents a forward / reverse rotation converting apparatus for an output shaft according to the present invention. In the forward / reverse rotation converting device A for the output shaft, a gear 3 that meshes the driving force of the glow engine 1 with a gear 2 fixed to the rotary shaft 1a of the glow engine 1 and a gear meshed with the gear 3 There are two clutch means a, a, which are separately transmitted to one output shaft 5 via 4 and 4, respectively.

The gear 3 and the gear 4 are loosely fitted to gear shafts 7 and 8 which are rotatably supported by a bearing member 6, and the gear 3 and the gear 4 are integrally formed with a tubular shape at the center of one side surface thereof. The protrusions 3a and 4a which it has are provided in a protruding manner, and engagement flange pieces 9 made of metal are provided around the tip end. Then, the engaging collar pieces 9, 9 are formed so as to be arranged in a transmitting portion described later.

The glow engine 1 is configured to take in a predetermined air-fuel mixture of fuel and air, burn it through the ignition plug 10 to generate power, and rotationally drive the rotary shaft 1a. Note that the internal structure of the glow engine 1 is well known in the art and will not be described. The glow engine 1 is provided with a carburetor 11 and the carburetor 11
Is formed so that the fuel is supplied from the fuel supply device 12. The carburetor 11 is composed of an intake hole 11a for taking in air from the outside, and an air valve 11b for opening / closing the air intake hole 11a to adjust the amount of air. As a result, the fuel mixed with air in the carburetor 11 becomes a mist-like air-fuel mixture and is sent into the glow engine 1 through the intake holes. Reference numeral 13 indicates a starter of the glow engine 1, and the starter 13 is publicly known, and therefore its explanation is omitted.

Each of the clutch means a, a is a gear 18 fixed to the support shaft 11 meshed with a gear 17 fixed to the output shaft 5.
And two gears 20, 21 meshed with a gear 19 arranged in parallel with the gear 18 and a circular rotary member 22, 23 integrally formed on one side of the gears 20, 21 with a concave back surface. Centrifugal clutch portions 24, 24 that can be pressed against and separated from the concave inner peripheral surfaces 22a, 23a.
And disc clutch portions 25, 25 linked to the centrifugal clutches 24, 24, and transmission portions 26, 26 for transmitting the driving force from the glow engine 1 to the disc clutch portions 25, 25. Has been done. The gears 20 and 21 are the gear shafts 7,
8 is rotatably provided inside and the both ends of the gear shaft 7,
It is loosely fitted to the rotary shafts 27, 27 projecting from 8.

As shown in FIG. 1 (b), the centrifugal clutch parts 24, 24 have rotating members 30, 30 provided at one end of the gear shafts 7, 8 and support shafts 31a, 31 on the surfaces of the rotating members 30, 30. Linking member that can be pressed against and separated from the concave inner peripheral surfaces 22a, 23a mounted via
31 and 31, and the linking member 31,
31 is an elastic member 32, 32 normally wound around the support shafts 31a, 31a.
Always inwardly urged by. Then, the rotating members 30, 30 are expanded during rotation and pressed against the concave inner peripheral surfaces 22a, 23a of the rotating members 30, 30. Also, the gear shaft 7,
Discs 33, 33 are fixed to the other end of 8 and
33, 33 are fixed to the rotary shafts 27, 27. As a result, the gear shafts 7, 8 and the rotary shafts 27, 27 rotate integrally.

The disc clutch parts 25, 25 are a large number of cork plates 25a which are arranged inside the discs 33, 33 fixed to the other ends of the gear shafts 7, 8 so as to be loosely fitted to the gear shafts 7, 8. , 25a ... and between the cork plates 25a, 25a ... Made of metal fixed to the tips of the protrusions 3a, 4a provided on one side of the gears 3, 4. The engaging brim pieces 9, 9 are arranged.

The transmission portions 26, 26 are hollow and have a substantially convex cross section,
Inside, there are discs 33, 33 provided at the other ends of the gear shafts 7, 8.
And the cork plates 25a, 2 which compose the disc clutch parts 25, 25 described above.
5a ... and the above-mentioned engaging brim pieces 9, 9 provided on one side surface of the gears 3, 4. In addition, the transmission parts 26, 26
Ball bearings 35, 35 are provided at the tip of the.
Reference numerals 36 and 36 denote elastic members arranged at the inner ends of the transmitting portions 26 and 26, and the elastic members 36 and 36 are urged so that the leading ends of the transmitting portions 26 and 26 are always in contact with the operating member 37. There is.

The operating member 37 is formed by a semi-circular plate 37a and a movable member 37b, the semi-circular plate 37a is arranged on one side surface of the bearing member 38, and the movable member 37b is arranged on the other side surface of the bearing member 38 and servo It is fixed to the rotating shaft 41 of the motor 40. And
Engaging shafts 42 and 43 are projectingly provided on the semicircular plate 37a and the movable member 37b. Further, one-step pulling step portions 44, 44 are formed near the upper and lower portions of the semi-circular plates 37a, 37a close to the flat surface on the front side. And, normally, the tips of the transmission parts 26, 26 are in contact with the surface of the semi-circular disk 37a, and the disk clutch parts 25, 25
When the semi-circular plate 37a is turned in one direction by the servo motor 40, the transmission portion 26
The tip end is pushed forward by the elastic member 36 and falls onto the one step portion 44. At this time, the disc 33 provided on the other end of the gear shaft 7 and the cork plates 25a, 25a, ... Is entered, which causes one of the centrifugal clutch units to
The output shaft 5 rotates forward due to the action of 24. In addition, when the semi-circular plate 37a is rotated in the other direction, the one transmission portion 26 is completely returned from the step portion 44, and the other transmission portion 26 is connected to the other step portion. Falls to 44. by this,
For the same reason as described above, the other disc clutch portion 25 is engaged, which causes the other centrifugal clutch 24.
And the output shaft 5 rotates in the reverse direction.

A rotating member 46 is axially supported on one side surface of the bearing member 38, and engaging shafts 47, 48 are provided at opposite positions of the rotating member 46.
Is projected. The engaging shaft 47 has the semi-circular plate
The engaging shaft 42 is formed above the engaging shaft 42 provided on the 37a, and the engaging shaft 48 is formed below the engaging shaft 43 provided on the movable member 37b. This allows the servo motor
When the semi-circular plate 37a and the movable member 37b rotate via 40, the rotating member 46 can be rotated in the same direction regardless of the rotation direction. Further, the projecting piece 49 provided on the rotating member 46 and the carburetor 11 of the glow engine 1 are linked by a connecting rod 50. This allows the servomotor 40 to simultaneously operate the clutch means a, a and the carburetor 11.

According to the forward / reverse rotation converting device A of the output shaft having the above-described configuration, the driving force of the glow engine 1 is applied to the gear 2 with respect to one output shaft 5.
Since the two clutch means a, a that are separately transmitted via the above are provided, the forward / reverse rotation of the output shaft 5 can be reliably switched by the two clutch means a, a.

Further, the clutch means a, a are respectively the output shaft 5
A gear 18 meshed with a gear 17 fixed to the
Another two gears 2 meshed with a gear 19 arranged side by side
Centrifugal clutch portions 24, 24 that can be press-fitted into and disengaged from 0, 21 and a disc clutch portion linked to the centrifugal clutch portions 24, 24
25, 25 and transmission parts 26, 26 for transmitting the driving force from the glow engine 1 to the disc clutches 25, 25, and the transmission parts 26, 26 are linked to the operating member 37. The output shaft 5 can be normally rotated by rotating the operating member 37 to one side by the servo motor 40 and operating the transmission portion 26 of the one clutch means a.
The output shaft 5 can be rotated in the reverse direction by rotating the operating member 37 to the other side and operating the transmission portion 26 of the other clutch means a.

Next, FIGS. 3A and 3B show an example in which the forward / reverse rotation converting device A for the output shaft according to the present invention is applied to an engine traveling toy B. In this case, the gear 52 and the rear wheel 5 provided at the tip of the output shaft 5
Gears (not shown) provided on the wheels of the wheels 53 and 53 are meshed with each other to transmit the driving force of the glow engine 1 to the rear wheels 53 and 53 so that the wheels can run. Also,
The front wheel 5 is driven by driving the other servo motor 55 mounted on the chassis 54 by manipulating a radio control (not shown).
It is formed so that 6, 56 can be moved to change direction freely.

In the engine traveling toy B, the glow engine 1 is started by pulling the starter 13. At the time of starting, the clutch means a, a are assumed to be in a neutral state. That is, it is assumed that the tips of the transmission parts 26, 26 of the clutch means a, a are in contact with the surface of the semi-circular plate 37a of the operating member 37. by this,
Since the rotational force of the glow engine 1 is not transmitted to the wheels of the rear wheels 53, 53, the traveling of the engine traveling toy B is kept stopped.

Next, the servo motor 40 is driven and controlled by radio control to rotate the operating member 37 to one side, so that the tip of the transmission portion 26 of the one clutch means a is a semi-circular plate 37.
The rear wheel 5
The engine running toy B can be moved forward by rotating the wheels of 3, 53 forward. At this time, the other clutch means a is in the disengaged state. By rotating the operating member 37 to the other side, the other clutch means a
Can be operated in the same manner as described above to reversely rotate the axles of the rear wheels 53, 53 to cause the engine traveling toy B to travel backward. The engine running toy B is a servo motor.
It can be stopped by controlling the 40 to its initial state.

According to the engine traveling toy B to which the output shaft forward / reverse rotation converting device A is applied as described above, it is possible to perform forward or backward traveling without converting the rotation of the glow engine 1 by the clutch means a. . Further, the glow engine 1 and the clutch means a and a are combined into one servo motor.
In addition to being operated by 40, the direction change of the front wheels 56, 56 is operated by another servo motor 55,
Unlike the conventional case where the engine, the clutch means, and the direction change are operated by three servo motors respectively provided, the number of parts can be reduced and an inexpensive one can be obtained.

The output shaft forward / reverse rotation converting device is not limited to a four-wheel engine traveling toy, and may be applied to, for example, an auto tricycle.

[Brief description of drawings]

FIG. 1 (a) is a front view of a forward / reverse rotation converting device for an output shaft according to the present invention, FIG. 1 (b) is an internal structural view of clutch means, and FIG. 2 (a) is a glow engine and clutch means. Explanatory view showing the relationship, (b) is an exploded perspective view of the centrifugal clutch,
FIG. 3C is a perspective view showing the interlocking relationship between the operating member and the carburetor, FIG. 3D is an explanatory view showing the operating relationship between the semi-circular plate of the operating member and the clutch means, and FIG. FIG. 6B is a perspective view and an internal mounting state diagram showing a state in which the forward / reverse rotation converting device for the output shaft is applied to an engine traveling toy. Reference symbol A ... Output shaft forward / reverse rotation conversion device, a ... Clutch means, 1 ... Glow engine, 5 ... Output shaft, 24 ... Centrifugal clutch unit, 25 ... Disc clutch unit, 26 ... Transmission Department

Claims (1)

[Claims] 1. A forward / reverse rotation conversion device for an output shaft, comprising the following requirements. (A) Two clutch means for separately transmitting the driving force from the drive unit via the gear to one output shaft. (B) The clutch means includes a centrifugal clutch portion that can be pressed into and separated from another two gears that are meshed with a gear fixed to the output shaft, and a disc clutch linked to the centrifugal clutch portion. And a transmission unit that transmits the driving force from the drive unit to the disc clutch unit.