JPH07151157A - Low speed clutch device - Google Patents

Abstract

PURPOSE:To realize the miniaturization and the reduction of the power by providing a movable plate which is slid to a transmission shaft, and where a pin engaged with a gear pin groove of the final stage is projectingly provided, a movable plate fixed to the transmission shaft, a spring to energize the movable plate to the direction of the counter final stage gear, and a pressing plate which presses or releases the movable plate by a magnet relay. CONSTITUTION:A low speed clutch device consists of a movable disk 19 which is externally housed over a roller shaft 7a in a slidable manner, and three pins 18 are fixed on one surface, a fixed disk 20 which is provided with a pin hole 21 where the pin 18 is penetrated, and fixed to a shaft 7a, a coil spring 22 interposed between the disks 19, 20, and a pressing plate 23. A fourth gear 15d is connected to a roller shaft 7a through the fixed disk 20 by pressing the pressing plate 23 against the movable disk 19 by the magnet relay, and inserting the tip of the pin 18 of the movable disk 19 into a pin groove 24 of the fourth gear 15d. The pressing of the pressing plate 23 is released, and the pin 18 is released from the pin groove 24 by the spring 22 to allow the idling of the roller shaft 7a. This constitution realizes the miniaturization and the reduction of the power.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low speed clutch device which can be used for various purposes such as an automatic opening / closing seat blind device in a greenhouse or an automobile.

[0002]

2. Description of the Related Art Conventionally, as clutches used in various machines and devices such as automobiles, there are crimp (friction) clutches (dry type, wet type, etc.) and magnet clutches. Further, these clutches 70 are usually arranged in front of the transmission gear 72, that is, between a drive source 71 such as an engine and the transmission gear 72, as shown in FIG.

[0003]

However, since the crimping (friction) clutch is for high speed, it cannot be used for low speed rotation such as a seat blind device.

Further, the magnetic clutch can be used for high speed and low speed, but a small one having a small crimping surface has a weaker crimping force than power consumption, and the crimping surface must be large in order to increase the crimping force. Therefore, the power consumption increases and the structure becomes large. Therefore, when used as a device such as a seat blind device, there is a drawback that the mechanism becomes large, equipment cost and maintenance cost increase, and it is also aesthetically unfavorable.

Further, in the case of an automobile clutch, in particular, since the clutch is arranged in front of the transmission gear, the following problems occur. In the gear change type, when the vehicle starts, the accelerator is stepped on to increase the rotation to press the clutch, so that fuel consumption increases accordingly. In addition, since the engine rotation does not decrease during coasting, fuel consumption is large and there is an inconvenience of using the clutch pedal when switching gears.

The automatic type consumes more fuel than the gear change type because of the shock of gear meshing at the time of starting, increasing the rotation, and constantly stepping on the accelerator during traveling. In addition, the automatic system has a problem that it starts suddenly when the vehicle is stopped or sometimes idling.

Both the gear change type and the automatic type consume a large amount of fuel, so that exhaust gas also increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a low speed clutch device which operates reliably for low speed rotation, has a compact mechanism, and is capable of reducing power consumption.

[0009]

To achieve the above object, a first invention is a clutch provided between a final stage gear of a reduction gear and a transmission shaft, which is slidable on the transmission shaft. A movable plate fitted with a pin engageable with a pin groove provided in the final gear on one side, and a fixed plate having a pin hole through which the pin penetrates and fixed to the transmission shaft;
It comprises a spring for urging the movable plate in a direction away from the final stage gear, and a crimping plate that is actuated by a magnet relay to press and release the movable plate.

A second aspect of the present invention is a clutch provided between a final stage gear of a reduction gear and a transmission shaft, wherein a small-diameter gear fixed to one surface of the final stage gear and a fixation fixed to the transmission shaft. A child, a butterfly-shaped piece pivotally attached to the stator and having a tip end engageable with a gear groove of a small-diameter gear, a spring for biasing the butterfly-shaped piece in a direction away from the small-diameter gear, and a magnet relay. A crimping plate for actuating and pressing and releasing the butterfly.

In each invention, at the same time when the drive motor is stopped in the normal rotation direction, the magnet relay switch is operated to reversely rotate the motor to reverse the deceleration gear, and the reverse rotation of the gear is detected by the gear switch to detect the motor rotation. It is preferable to provide a clutch release mechanism for stopping the reverse rotation.

Further, the present invention may be installed in the winding mechanism and the pulling-out mechanism, respectively, in an automatic opening / closing sheet blind device having a mechanism for automatically winding up or pulling out the blind sheet by detecting the change of the light quantity. .

Further, the present invention may be provided between the final gear and the output shaft of the transmission of the automobile.

[0014]

In the first invention, the movable plate is slid by actuating the crimp plate by the magnet relay to press the movable plate, and the tip of the pin is inserted and crimped into the pin groove provided in the final gear. Thus, the final stage gear and the transmission shaft are connected via the fixing plate. Further, by releasing the pressure contact of the pressure contact plate, the pin is disengaged from the pin groove by the action force of the spring, thereby making the transmission shaft idle.

In the second aspect of the invention, the butterfly-shaped piece is opened and closed by the action of the crimping plate by the magnetic relay and the action of the spring, whereby the tip of the butterfly-shaped piece is engaged with and disengaged from the gear groove of the small-diameter gear. As a result, the final gear and the transmission shaft are connected or freed via the stator.

The clutch of the present invention is installed in both mechanisms of an automatic opening / closing sheet blind device having a sheet winding mechanism and a sheet drawing mechanism, and the clutch of the other mechanism is disengaged when one mechanism operates. Since it is not necessary to rotate the reduction gear of the other mechanism, power consumption can be significantly reduced.

Further, in the clutch releasing mechanism, the reduction gear is reversely rotated for a short time by the reverse rotation of the motor, whereby the pin (or butterfly-shaped piece) is disengaged from the gear by the action of the spring, that is, the clutch is released more reliably. did.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, an automatic opening / closing sheet blind device for a greenhouse etc. to which a low speed clutch device is applied (filed by the applicant as Japanese Patent Application No. 5-149045) will be described. In the illustrated embodiment, 1 is a frame body, and as shown in FIG. 4, left and right rail frames 2, an upper frame 3, and a lower frame 4.
It consists of and. The rail frame 2 is composed of inner rail portions 2a and outer reinforcement portions 2b as shown in FIGS. 5 and 6, and guide holes 5 are provided in the longitudinal direction on the respective facing surfaces of the rail portion 2a. . An optical sensor 61 is attached to the upper surface of the upper frame 3.

In FIG. 4, 6 is a light-shielding sheet made of cloth such as lace. A winding roller 7 is fixed to the upper end of the sheet 6, and a guide rod 8 is fixed to the lower end thereof.
Both ends of the guide rod 8 are slidably engaged with the guide holes 5 of the rail frame 2. By attaching the L-shaped metal fittings 9 to the engaging portions as shown in FIG. It is constructed to prevent vibration (rattle) and one-way movement, and slide smoothly.

The winding roller 7 and the drawing roller 10 are rotatably attached to the upper and lower ends of the rail frame 2, and one end of each of the rollers 7 and 10 is a winding mechanism 12 which will be described later.
And the withdrawal mechanism 13 respectively.

A pull-out rope 11 is stretched between the guide rod 8 and the pull-out roller 10. The rope 1
1 is stretched in a V-shape by fixing its upper end to both ends of the guide rod 8 and its lower end to the center of the pull-out roller 10, so that when wound around the pull-out roller 10, It is wound into a coil without left-right deviation. Therefore, the sheet 6 is pulled out in a well-balanced manner on the left and right, and the rewinding is smoothly performed. Moreover, since the rope 11 is wound evenly in a coil shape, the rope 11 is not concentratedly wound in one or two places and is thickly wound, which saves space in the radial direction.

The winding mechanism 12 and the drawing mechanism 13 are installed at the upper and lower corners on one side of the frame body 1. Since both mechanisms have the same configuration, the winding mechanism 12 will be described with reference to FIG. 7. The drive motor 14 and the first to first forming the reduction gears will be described.
The fourth gear 15a, 15b, 15c, 15d, the gear switch section 16 of the clutch release mechanism, and the low speed clutch 17 of the present invention. The first gear 15a is connected to the shaft of the motor 14, and the fourth gear 15d is connected to the take-up roller 7 via the clutch 17. The second and third
The gears 15b and 15c are coaxially fixed.

As the clutch 17, a pin clutch 17a or a butterfly single clutch 17b which can be made smaller than a magnet clutch is used. Pin clutch 1 according to the first invention
As shown in FIGS. 1 and 2, 7a is slidably fitted onto the roller shaft 7a and has three pins 18 on one side.
A fixed circular plate 20 fixed to the roller shaft 7a, and a coil spring interposed between the circular circular plates 19 and 20. 22 and a crimping plate 23. Then, the pressure relay plate 23 is actuated by the magnet relay and pressure-bonded to the movable disc 19, so that the movable disc 19 is slid, and the tip of the pin 18 is inserted into the pin groove 24 provided in the fourth gear 15d and pressure-bonded. As a result, the fourth gear 15d and the roller shaft 7a are connected via the fixed disc 20. Further, the pressure of the pressure plate 23 is released, and the motor 14 is rotated in the reverse direction as described later, so that the spring 2
The pin 18 is disengaged from the pin groove 24 by the acting force of 2, so that the roller shaft 7a can idle.

The second invention is a butterfly type single clutch 17b.
As shown in FIG. 3, a stator 25 fixed to the roller shaft 7a and a pair of butterfly-shaped pieces 27 pivotally attached to the stator 25 and urged by a spring 26 in the expanding direction.
And a small-diameter fifth gear 15e fixed to one surface of the fourth gear 15d, and a crimping plate 23. Then, the butterfly-shaped piece 27 is opened / closed and rotated by the operation of the crimping plate 23 by the magnet relay, so that the tip end of the butterfly-shaped piece 27 is engaged with and disengaged from the gear groove of the fifth gear 15e. The fourth gear 15d and the roller shaft 7a are connected or free.

The clutch 17 is connected to the fourth gear 1 at the final stage.
The reason why it is provided in 5d is to reduce the power load. That is, for example, if a clutch is provided between the gear 15a of the preceding stage and the motor 14, all the gears are rotated when the seat 6 is pulled out, so that the power load becomes large and the seat 6 and the rope 11 also become large. Due to the load (tensile force) applied, the damage to them becomes faster. On the other hand, if the clutch 17 is provided in the gear 15d at the final stage, the roller shaft 7a runs idle because the clutch 17 is disengaged as will be described later when the seat 6 is pulled out.
It is not necessary to rotate 5a to 15d (or 15a to 15e).

At both upper ends and left lower ends of the rail frame 2,
A stopper mechanism 30 that receives the guide rod 8 and stops the operation of the winding mechanism 12 or the drawing mechanism 13 is installed. The mechanism 30 is a roller type stopper, and as shown in FIGS. 8 to 10, the roller 33 is attached to the lower surface of the end portion of the fixed plate 31 attached to the upper surface of the rail frame 2 via the leaf spring 32, and the fixed plate 31 is attached. The switch lever 34 (see FIG.
0) is attached, and a photo interrupter switch 35 for detecting the displacement of the lever 34 is attached.

On the other hand, on the upper surface of the L-shaped metal fitting 9 fixed to the guide rod 8, as shown in FIG. 9, a roller receiving plate 38 having a rising portion 36 at one end and an engaging recess 37 in the central portion is attached. There is. Therefore, when the guide rod 8 moves to the position of the stopper 30, the roller 33 moves the roller receiving plate 38.
Of the switch lever 34, the rising portion 36 contacts the end portion of the switch lever 34 and rotates it, and the displacement of the lever 34 is detected by the photo interrupter switch 35. Motor 1 of mechanism 13
Stop 4

A stop mechanism 39 for fixing the guide rod 8 is provided at the lower right end of the frame body 1. That is, as shown in FIGS. 11 and 12, the receiving recess 41 is formed in the upper part of the frame 40 fixed to the lower frame 4, and a key piece 42 having a hook 43 at one end is pivotally mounted in the frame 40. Photo interrupter switches 44 for detecting the displacement of the key pieces 42 are attached to both surfaces of the. Further, 45 is a pin that penetrates the frame 40 and goes into and out of the pin hole 46 of the key piece 42, 47 is a lever that rotates by a magnet relay 48 provided at the base end to displace the pin 45, and 49 is a lever 47 It is a spring interposed between the pin and the pin 45.

In the locking mechanism 39, when the guide rod 8 enters the receiving recess 41 from above and engages the hook 43 while rotating the key piece 42, the switch 44 is operated and the lever is operated via the magnet relay 48. 47 is the frame 40
And the tip of the pin 45 is engaged with the pin hole 46.
As a result, since the key piece 42 is fixed, the guide rod 8 is also fixed at that position by the hook 43, and the seat 6 is prevented from being pulled back by being hit by the wind.

13 and 14 show the gear switch portion 16 of the clutch releasing mechanism provided in the winding mechanism 12 and the withdrawing mechanism 13. The tip end of the gear switch portion 16 is pivotally stopped at a suitable position so that it can engage with the third gear 15c. A lever 50, a pair of springs 51 for urging the lever 50 from both sides in the direction of engaging the third gear 15c, and a reverse rotation stop switch 52 at which the end of the rotating lever 50 can be brought into contact with and separated from the lever. . When the motor 14 rotates in the normal direction, the lever 50 is driven by the third gear 15c.
Is rotated counterclockwise in FIG.
Since the lever 50 is rotated clockwise during the reverse rotation of No. 4, the end of the lever 50 pushes the reverse rotation stop switch 52, and the reverse rotation of the motor 14 is stopped.

In FIGS. 4 and 15, reference numeral 60 denotes a sensor adjuster provided on one rail frame 2, a transistor 62 is activated by a signal from an optical sensor 61 which detects an increase / decrease in the amount of light, and a magnet relay switch 63 is turned on. Then, power is supplied to the drawer mechanism 13 via the power distributor 65 (FIGS. 4 and 16). When the transistor 62 is deactivated and the magnet relay switch 63 is turned off, the winding mechanism 1 is turned on via the power distributor 64 (FIGS. 4 and 16).
It supplies power to 2.

The distributors 64 and 65 have the same structure and are provided in the vicinity of the winding mechanism 12 and the withdrawing mechanism 13, and each of them has a plurality of transistors 6 as shown in FIG.
6 and a relay switch 67.

Next, the operation of this apparatus will be described with reference to FIG. First, when the amount of light exceeds a predetermined amount, such as during fine weather in the daytime, the optical sensor 61 detects this and sends a signal to the power distributor 65 via the sensor adjuster 60, and the relay switch 67 operates in the power distributor 65. The motor 14 of the pull-out mechanism 13 is normally rotated. Thereby, the first to fourth gears 15a
Since the pull-out roller 10 is rotated via the .about.15d and the clutch 17, the rope 11 is wound, the guide rod 8 is pulled downward in FIG. 1, and the light-shielding sheet 6 is pulled out.

When the guide rod 8 reaches the lower end of the rail frame 2,
While engaging the stopper mechanism 30 as described above, the photo interrupter switch 35 operates to stop the motor 14, and the pressure plate 23 of the clutch 17 is opened.
And at the same time, a relay switch 67 for reversing the power distributor 65.
Is activated and the motor 14 starts reverse rotation.

The reverse rotation of the motor 14 ensures the release of the clutch 17. That is, particularly in the case of the pin clutch 17a (FIG. 1), since the pin 18 is inserted and crimped into the pin groove 24 at the time of connection, the crimp plate 2 is released at the time of releasing.
Even if 3 is opened, the pin 18 may not come off from the pin groove 24 only by the acting force of the spring 22. for that reason,
The reverse rotation of the motor 14 causes the reverse rotation of the fourth gear 15d,
The pin 18 is surely removed.

When the motor 14 rotates in the reverse direction, the reverse rotation stop switch 52 of the gear switch section 16 (FIGS. 13 and 14) operates as described above, so that the reverse rotation of the motor 14 stops immediately.

When the guide bar 8 reaches the lower end of the rail frame 2, the locking mechanism 39 (see FIG. 11,
Since it is engaged with and fixed to the hook 43 of FIG. 12), the light-shielding state by the sheet 6 is reliably maintained.

On the other hand, when the amount of light falls below a predetermined amount, such as during cloudy days or in the evening, the optical sensor 61 detects this and sends a signal to the distributor 64 via the sensor adjuster 60. The relay switch 67 is actuated to rotate the motor 14 of the winding mechanism 12 in the forward direction, and the magnet relay 48 of the locking mechanism 39 is actuated to release the engagement between the pin 45 and the key piece 42, so that the guide rod 8 moves. The fixation is released. At this time, the clutch 17 of the winding mechanism 12 is connected. By the rotation of the motor 14, the first to fourth gears 15
Since the take-up roller 7 rotates via the a to 15d and the clutch 17, the sheet 6 is taken up, the guide rod 8 is pulled upward in FIG. 1, and the pull-out roller 10 idles and the rope 11 is pulled out.

When the guide rod 8 reaches the upper end of the rail frame 2,
The motor 14 is stopped by engaging with the stopper mechanism 30 in the same manner as in the pull-out operation, and the pressure plate 23 of the clutch 17 is engaged.
Is released, and then the motor 14 is rotated in the reverse direction, the switch 52 of the gear switch section 16 is actuated to immediately stop the motor 14. This reverse rotation surely releases the pressure contact of the clutch 17.

Next, FIG. 18 is a schematic view when the low speed clutch device 17 of the present invention is applied to a drive portion of an automobile.
Is an engine, 72 is a transmission, and 73 is an output shaft. By arranging the clutch 17 at the final stage of the transmission 72 in this way, the following advantages occur.

Since the engine rotation at the time of start is gradually increased by the accelerator pedal than the idling rotation, the fuel consumption is small, and the engine rotation is rapidly reduced by releasing the foot from the accelerator pedal while the engine is running, so the fuel consumption is reduced. Less is.

Since the clutch operation and the fuel supply operation can be simultaneously performed by the accelerator pedal, the clutch pedal is eliminated in the gear change system, and only the gear change operation can be performed. Therefore, there is an advantage that it is not possible to perform idling while the vehicle is stopped or running.

There is no shock of gear meshing at the time of starting unlike the automatic type. Further, it is possible to prevent a sudden start at the time of idling. With this low-speed gear clutch system, there is no danger of sudden start unless the accelerator pedal is operated.

As described above, since the fuel consumption when moving is generally small, the amount of exhaust gas is also largely reduced as compared with the current vehicle.

Since the clutch box is unnecessary,
Miniaturization can be achieved.

The present invention is also applicable to various machines and devices such as electric vehicles and motorcycles.

[0047]

As described above, in the low speed clutch device of the present invention, the pin or the butterfly-shaped piece is configured to engage and disengage from the final gear, so that the operation is reliable and the mechanism is miniaturized. Power consumption is significantly reduced.

Further, if the clutch releasing mechanism is provided, the clutch can be released more reliably by reversing the reduction gear slightly.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the first invention.

FIG. 2 is an exploded view of the parts.

FIG. 3 is a sectional view showing an embodiment of the second invention.

FIG. 4 is a front view of a seat blind device to which the present invention has been applied.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a cross-sectional view taken along the line BB of FIG.

FIG. 7 is a detailed view of a winding mechanism.

FIG. 8 is a detailed view of a stopper mechanism.

FIG. 9 is a side view of the same.

FIG. 10 is a plan view of the same.

FIG. 11 is a side view of the locking mechanism.

FIG. 12 is a sectional view of the same.

FIG. 13 is a front view of a gear switch portion.

FIG. 14 is a side view of the same.

FIG. 15 is a front view of a sensor adjuster.

FIG. 16 is a front view of a power distributor.

FIG. 17 is a circuit configuration diagram of the seat blind device.

FIG. 18 is a schematic diagram of an automobile drive unit to which the present invention is applied.

FIG. 19 is a schematic view of a conventional vehicle drive unit.

[Explanation of symbols]

 6 seat 7a roller shaft 12 winding mechanism 13 drawing mechanism 14 drive motor 15a to 15d reduction gear 15d final stage gear 15e small diameter gear 16 gear switch 17 clutch 17a pin clutch 17b butterfly single clutch 18 pin 19 movable plate 20 fixed plate 21 Pin holes 22, 26 Spring 23 Crimping plate 24 Pin groove 25 Stator 27 Butterfly-shaped piece 52 Reverse rotation stop switch 71 Engine 72 Transmission 73 Output shaft

Claims (5)

[Claims] 1. A clutch provided between a final gear of a reduction gear and a transmission shaft, the pin slidably fitted on the transmission shaft and engageable with a pin groove provided in the final gear. , A fixed plate fixed to the transmission shaft, having a pin hole through which the pin penetrates, a spring for biasing the movable plate in a direction away from the final gear, and a magnet relay. A low-speed clutch device including a pressure plate that is actuated by the pressure plate to press and release the movable plate. 2. A clutch provided between a final gear of a reduction gear and a transmission shaft, comprising a small diameter gear fixed to one surface of the final gear, a stator fixed to the transmission shaft, A butterfly-shaped piece pivotally attached to the stator and having a tip end engageable with the gear groove of the small-diameter gear, a spring biasing the butterfly-shaped piece in a direction away from the small-diameter gear, and a magnet relay to operate the butterfly. A low-speed clutch device comprising a crimping plate that presses and releases a mold piece. 3. The forward rotation of the drive motor is stopped, and at the same time when the magnet relay switch is operated, the motor is rotated in the reverse direction to reverse the reduction gear, and the reverse rotation of the gear is detected by the gear switch to stop the reverse rotation of the motor. The low speed clutch device according to claim 1 or 2, further comprising a clutch releasing mechanism for enabling the clutch releasing mechanism. 4. An automatic opening / closing sheet blind device provided with a mechanism for automatically winding up or pulling out a blind sheet by detecting a change in the amount of light, wherein the winding mechanism and the pulling out mechanism are respectively installed. The low-speed clutch device described in 3. 5. The low speed clutch device according to claim 1, which is provided between a final gear of a transmission of an automobile and an output shaft.