JPH0223052A - Geared motor - Google Patents

Abstract

PURPOSE:To enable straight driving of a driven member by arranging a spiral guide section at one of the overlapping faces of a drive body and a driven body and providing a chip movable relatively along the guide section at the other overlapping face. CONSTITUTION:An operational mechanism 30 functions to engage a clutch 24 so as to rotate an output shaft 3 thus rotating a drive body 41. A chip 50 in a driven body 42 is moved along a guide section 44 thus moving the driven body 42 straight in the axial direction of the drive body 41 along a guide chip 48. Consequently, the driven member 55 in the device 54 is moved straight. Upon finish of movement of the driven body 42, a switch 52 is opened through a cam 51 to interrupt power supply to a motor 2 so as to stop rotation of a rotor 16 thus stopping rotation of the output shaft 3. When an external switch is opened, the clutch mechanism 30 is recovered to disengage the clutch 24 so as to reset the output shaft 3 to the initial position thus resetting the driven member 55 in the device 54 through the reset spring in the device 54.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a geared motor used to operate driven members that reciprocate in various mechanical devices.

[Conventional technology]

As shown in Fig. 1θ, an output shaft 3f is rotationally driven by a motor 2f via a gear train for deceleration.
There is one in which a drive lever 5f is attached to the lever 5r, and a driven member 55f of a driven device 54F is connected to the tip of the lever 5r by a connecting member 56 such as a wire.

[Problem to be solved by the invention]

In this conventional geared motor, the operation of the motor 2f causes the lever 5f to change from the state shown in FIG.
When the driven member 55f is rotated as shown in the figure, the driven member 55f will be driven in the diagonal direction as shown by the arrow 6° in the state shown in FIG. There was a problem that could easily be caused.

In addition, in the case of the above structure, if the speed and force for driving the driven member 55f are ordered with special specifications, the reduction ratio of the reduction gear train must be changed, and the basic design There were some problems that required starting over again.

The present invention has been made in view of the above points, and its purpose is to be able to drive the driven member of a driven device in a straight line, and to have a special driving speed and driving force. To provide a geared motor that can easily respond to orders for specifications.

[Means to solve problems]

In order to achieve the above object, the present invention takes the measures described in the claims above, and its effects are as follows.

[Effect]

When the motor rotates, the output shaft rotates through the gear train, and the drive body rotates. As the drive body rotates, the driven body rotates the drive body through engagement between the spiral guide part and the retainer. It moves in the direction of the driving wheel line.This movement moves the driven member of the driven device.

〔Example〕

The drawings showing the embodiments of the present application will be described below.

In Fig. 1, 1 indicates the base frame, 2 is the motor attached to the base frame 1, 3 is the output shaft, 4 is a gear train for deceleration to connect both 2.3, and 5 is the output shaft 3. The output mechanism connected to 6 is also a motor stop mechanism.

As is well known, the base frame 1 is composed of a base 10 and a case 11 integrally connected to the base 10. A mounting piece 12 is formed integrally with the base 10 or the case 11.

The above-mentioned motor 2 is a well-known motor used in motor type timers, and 13 and 14 are stators, 13a and 14a are magnetic pole pieces, 15 is a coil, 16 is a rotor, 17 is a permanent magnet in the rotor, and 18 is a motor pinion. be.

The output shaft 3 is made of resin, and has a connecting portion 20 with the output mechanism 5 at one end, and an integrally formed output gear 21 on the outer periphery near the other end. Reference numeral 22 denotes a shaft return spring, which has one end mounted on the base 10 and the other end mounted on the output shaft 3.

The gear train 4 for speed reduction is constructed by combining a large number of gears, one end of which meshes with the motor pinion 18 and the other end meshes with the output gear 21. Some of the many gears are indicated by broken lines 23.
The illustration is omitted. Reference numeral 24 denotes a well-known clutch interposed in the middle of the tooth train 4, which consists of clutch elements 25 and 26, each integrally formed with a gear in the tooth train 4, and the element 26 can be moved toward or away from the element 25. . In addition, 27 is a pushed part,
28 indicates a spring for disconnection; 30 indicates a clutch operating device; 31 is an electromagnet;
2. It consists of an iron core 33, a coil 34, and a bearded coil 35. 36 is a suction piece supported by the yoke 32; 37
is an operation piece integrally formed with the suction piece, and is opposed to the pressed portion 27.

Next, the output mechanism 5 will be explained with reference to FIG. 2.3.4. Reference numeral 41 represents a driving member, and reference numeral 42 represents a driven member, each of which is made of a synthetic resin material with good slippage. Driven body 42
is formed into a cylindrical shape as shown in the figure, and inside it is formed into a rod shape (
A driving body 41 (which may be formed in a cylindrical shape) is positioned. This state is referred to as a double-tubular state in this specification.The driving body 41 may be formed into a cylindrical shape, and the driven body 42 formed into a rod-like (or cylindrical) shape may be positioned inside the driving body 41.
2 shows a coupling part provided on the drive body 41, which is formed in a shape corresponding to the coupling part 20 of the output shaft 3 so as to be able to fit therein, and is fixed to the coupling part 20 with an upper screw 43a. . Reference numeral 44 denotes a spiral guide portion provided on the surface where it overlaps with the driven body 42, and is formed into a spiral slope as shown in FIG. Reference numeral 45 indicates a cam drive piece for the motor stop mechanism 6. Next, the driven body 42 has a guide groove 47 on its outer periphery, in which a guide piece 48 integrally formed with the case 11 is positioned. As a result, movement of the drive body 41 in the axial direction is allowed, but rotation is prevented. Reference numeral 49 denotes a connecting portion provided on the driven body 42, which is a portion for connecting driven members in a driven device.

Reference numeral 50 denotes a retainer provided on the surface that overlaps with the driving body 41, and the surface 50a facing the guide section 44 is formed into a slope with the same slope as that of the guide section 44 so that the guide section 44 can be smoothly moved.

Next, the motor stop mechanism 6 includes a cam 51 attached to the output shaft 3 and a normally closed switch 52 driven by the cam 51.
It consists of The cam 51 is driven by the force and the cam drive piece 45 to rotate integrally with the drive body 41.

The geared motor is used by being attached to a driven device 54 as shown in FIG. Examples of the driven device 54 include a drain valve of a washing machine, a shutter of a ventilation fan, and the like.

For the above installation, attach the mounting piece 12 to the device 5 using a stopper 12a such as a screw.
4, and connects a driven member 55 (for example, a valve operating rod) of the device 54 to the connecting portion 49. Also, conduct electrical wiring as shown in Fig. 6, where 57 is an external switch;
58 is a power plug, which is connected to a commercial power source.

When the geared motor is not energized, the clutch 24 is disengaged, the output shaft 3 is returned to the initial position by the spring 22, and the driven body 42 is in the most protruding state as shown in Figure 5 (al). .

In the above state, when the switch 57 is closed as shown in FIG. 6(M), the rotor 16 of the motor 2 rotates, the clutch operating mechanism 30 is activated (the suction piece 36 is suctioned to the iron core 33), and the clutch 24 is connected. . As a result, the output shaft 3 rotates via the gear train 4, and the drive body 41 rotates in the direction of the arrow in FIG. Due to the rotation, the retainer 50 of the driven body 42 is moved along the guide portion 44, and the driven body 42 is moved along the guide piece 44.
8 in the axial direction of the driving body 41.

This movement causes the driven member 55 of the device 54 to move as shown in FIG.
When the movement of the driven body 42 is completed, the switch 52 is opened by the cam 51 as shown in FIG. stops, and the rotation of the output shaft 3 stops. In this state, the clutch 24 is engaged and the rotor 16 is restrained by the attractive force between the permanent magnet 17 and the Wl pole pieces 13a, 14a, so the output shaft 3 is
Even if the return urging force 2 is applied, the stopped state of the output shaft 3 is maintained.

Next, when the switch 57 is opened, the clutch operating mechanism 30 is restored and the clutch 24 is disengaged, so the output shaft 3 returns to its initial position by the biasing force of the spring 22, and the driven member 55 of the device 54 is rotated. Figure 5 (
Return as in a).

Next, the drive body 41 may be prepared with various types having guide portions 44 having different slopes, and replaced with a suitable one at the time of shipping the geared motor.
2 in the downward direction in FIG. 1, remove the top screw 43a, and then remove the drive body 41 in the same direction.

Next, the other driving body 41 is attached to the output shaft 3 by the reverse procedure, and the driven body 42 is also attached.

Next, FIGS. 7 to 9 show various examples of output mechanisms.

In FIG. 7, the direction of the spiral of the guide part 44 is reversed from that in FIG.
2 is given a pushing force in the direction of the arrow.

In FIG. 8, the guide portion 44 is formed into a groove shape, and the retainer 50 is fitted into the groove, and the driven body 42 is reciprocated in the direction of the arrow by the reciprocating rotation of the driver 41 in the direction of the arrow. It will be done.

FIG. 9 shows an example in which the driving body 41 is provided with a retainer 50, and the driven body 42 is provided with a guide portion 44.

〔Effect of the invention〕

As described above, in the present invention, when driving a driven member, the driven member 41 can be moved by rotating the motor 2, and the driven member 55 connected to the connecting portion 49 of the driven member 42 can be driven. In addition, when driving the driven member 55, the driving body 41 is rotated by the rotation of the motor 2, and the spiral guide portion 44 and the retainer 50 are rotated.
Since the driven member 42 is moved in the direction of the rotating wheel line of the driving member 41 by engagement with the driven member 42, the driven member 55 can be driven in a straight direction, and the possibility of failure as in the conventional example can be prevented. It has the effect of removing

Furthermore, since the driven body 42 is moved by the engagement between the spiral guide portion 44 and the retainer 50, if a specific driving force or speed is required, the motor,
Without changing the gear train, simply by selecting and using the driving body 41 or the driven body 42 whose spiral inclination meets the above requirements, the above requirements can be quickly met.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a longitudinal cross-sectional view;
Figure 2 is a sectional view taken along line -■, Figure 3 is a sectional view taken along line m-■, Figure 4 is an exploded perspective view of the output mechanism, and Figure 5 is a diagram illustrating attachment to a driven device and its drive. , FIG. 6 is an electrical wiring diagram, and FIGS. 7 to 9 are exploded perspective views showing different examples of the output mechanism,
FIG. 10 is a diagram showing a conventional example. 2...Motor, gear train for 3rd speed, 41, 44...Guiding section, 50...Output shaft, -Driver, 42...Engagement.・ ・ ・ Reduced/driven body, Figure Figure Figure ○

Claims (1)

[Claims] A geared motor has a motor and an output shaft, both of which are linked by a gear train for deceleration, and has a driving body and a driven body, one of which is formed into a cylindrical shape, and the inside of which is connected. The other is positioned to form a double tube shape, the driving body is coupled to the output shaft, the driven body is provided with a connecting part for connecting the driven member, and the driving body and the driven body are connected to each other. A geared motor in which a helical guide part is provided on one side of the overlapping surfaces of the two bodies, and a latch that is relatively movable along the guide part is provided on the other side.