JPH03128750A - Rotary type window cleaner - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a delay angle by a method wherein first and second wipers, driven by first and second motors, respectively, serving as a drive source are mounted in a state to approach each other, and the drive shafts of the two motors are intercoupled and uncoupled from each other by means of a coupling means to individually or simultaneously control the drive sources of the wipers. CONSTITUTION:A rotary type window cleaner is formed with a first wiper 2 driven by a first motor 22 serving as a drive source and a second wiper 3 driven by a second motor 26 serving as a drive source, and the wipers 3 and 2 are located in a state to approach each other. The drive sources of the wipers 2 and 3 are individually or simultaneously controllable by means of a coupling means A by which a drive shaft 30 of the motor 22 and a drive shaft 40 of the motor 26 are intercoupled or uncoupled from each other. Since a control means which stops the wiper 2 in a horizontal position and thereafter stops the wiper 3 in a horizontal position when the stop of operation of the wipers 2 and 3 is commanded is provided, the wipers 2 and 3 can be stopped in a horizontal state.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotary windshield cleaner having a first wiper and a second wiper.

(Prior art) A conventional rotary windshield cleaner has two sets of wipers, a wiper (left) and a wiper (right), which are installed close to each other.
Rotate and wipe the vehicle window glass surface.

In order to avoid mutual interference between the left wiper and the right wiper, a delay angle is provided between the set position of the left wiper and the set position of the right wiper. ).

(Problem to be solved by the invention) However, since the driving source for the left wiper and the right wiper is the same, when the wiper stops, it stops with a delay angle and cannot eliminate the delay angle. There was a problem.

If the lag angle cannot be resolved, the wipers will stop at the lag angle during intermittent operation, obstructing the driver's field of vision and making it difficult to drive.Also, when the wipers are not in use, the wipers may not be installed on the windshield. In order to hide it from the surface, the entire wiper is lowered and stored, but if the left wiper and the right wiper are kept at a lagging angle, the wiper will have to descend over a long distance, which will take up more space. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotary window cleaner in which the lag angle can be eliminated by controlling the wiper drive sources individually or simultaneously.

(Means for Solving the Problems) In order to achieve the above object, the rotary window cleaner of the present invention includes a first motor, a first wiper using the first motor as a driving source, and a first wiper. 2 motor, a second wiper using the second motor as a drive source, the second wiper and the first wiper are provided in close proximity, and the drive shaft of the first motor and the A joint means for connecting and disconnecting the drive shaft of the second motor is provided.

Further, when the first wiper and the second wiper are instructed to stop operating, the first wiper is stopped in a horizontal position, and then the second wiper is stopped in a horizontal position. It is something that

Furthermore, the coupling means is screwed into a threaded portion formed at the other end of the drive shaft of the first motor, a drum portion having a groove portion at the other end of the drive shaft of the second motor, and the threaded portion. It consists of a planet that slides in a groove.

(Function) The rotary wind cleaner configured as above is
a first wiper whose driving source is a first motor;
a second wiper whose driving source is a motor;
The wiper of the first wiper and the first wiper are provided in close proximity to each other, and the first wiper is connected to the first wiper by means of a coupling means that connects or non-quickly connects the drive shaft of the first motor and the drive shaft of the second motor. The drive source and the second wiper drive source can be controlled individually or simultaneously.

Further, when the first wiper and the second wiper are instructed to stop operating, the first wiper is stopped in a horizontal position, and then the second wiper is stopped in a horizontal position. Therefore, the first wiper and the second wiper can be stopped in a horizontal state.

Further, the coupling means is configured to include a threaded portion formed at the other end of the drive shaft of the first motor, a drum portion having a groove portion at the other end of the drive shaft of the second motor, and a threaded portion formed on the other end of the drive shaft of the second motor. - A planetary element that slides on a grooved portion, and is connected or disconnected depending on the difference in the rotational speed of the drive shaft of the first motor and the drive shaft of the second motor. The drive shaft and the drive shaft of the second motor can be automatically connected and disconnected.

(Example) An embodiment of the present invention will be described with reference to the drawings.

1 in the figure is a front windshield installed in front of the driver's seat in a vehicle, etc., and the lower part of the windshield is a well-known (for example,
The back plate (not shown) of the windshield 1 (see Publication No. 11663) is flush with the windshield 1, and is provided with a water collection groove (not shown) that covers approximately half of the wiper rotation range. A water pipe (not shown) is installed.

2.3 is a first wiper and a second wiper attached to a rotating shaft, and a wiping body made of flexible rubber or plastic is movably supported on a supporting rod a that is pressed toward the glass side.
Even when the windshield 1 is curved, the first wiper 2,
The second wiper 3 is formed to have a diameter that allows it to completely fit into the glass surface, and allows the upper part of the window glass 1 to be cleaned by rotation of the first wiper 2 and the second wiper 3.

4, (5) is the first wiper 2, (second wiper 3)
) with a transmission mechanism 80.81.82.83 inside.
(80', 81', 82°, 83°), etc. are provided (Fig. 3).

Reference numeral 6.7 is a lever-shaped operating member, and a gear 8.9 is formed on its lower peripheral surface to raise or lower the support tube 4.5. Although not shown, the driving source for the gears 8.9 may be a motor, air, hydraulics, or the like.

20 is a motor, and a first stator 23 of a first motor 22 is provided in a motor case 21, and a first rotor 24 is provided so as to face the first stator 23.

Similarly, a second rotor 28 is provided within the motor case 21 so that a second stator 27 of a second motor 26 faces the second stator 27 .

A is a flattening means, and the flattening means A is
As shown in FIG. d and FIG. Planet 5 moving 40
This is achieved by using 0.

That is, 30 is a drive shaft of the first motor, and threaded portions 31 and 32 are formed on the drive shaft 30 of the first motor.

Further, 40 is a drive shaft of the second motor. The drive shaft 40 of the second motor is formed with a threaded portion 41 at one end and a drum portion 42 at the other end.

The planet 50 has a hole 51 in the center, a female thread 52 is cut in the hole 51, and the female thread 52 is screwed into the threaded portion 31. Three protrusions 53 are provided on the outside of the planet 50. A bush 35 is provided on the drive shaft 30 of the first motor, which the planet 50 comes into contact with.
5 is made of, for example, friction-resistant gunmetal, ceramic, or the like.

Further, a groove portion 43 that engages with a projection portion 53 of the planet 50 is formed on the inner wall surface of the drum portion 42 of the second drive shaft 40 .

60 and 61 are bearings that abut on the inner and outer circumferences of the drum portion 42, respectively.

70 and 71 are first screws that are screwed into the threaded portion 32 and the threaded portion 41;
The first gear 7 and the second gear reduce the rotation of the first drive shaft 30 and the second drive shaft 40, respectively.
0, the rotation of the second gear 71 is caused by transmission mechanisms 80.81, 82.83 (80°, 81', 82°,
83') to the first wiper 2, (second wiper 3). First gear 70, second gear 71
The transmission mechanisms 80.81.82.83, 8
0', 81', 82', and 83' are adjusted.

72 is a first magnet attached to the first gear 70, and 73 is a second magnet attached to the second gear 71.
It is a magnet. A gear case 75 facing the first gear 70 is provided with an operation reed switch 76 for the second motor that generates a delay angle and a stop reed switch 77 for the first motor.

Further, a second motor stop reed switch 78 is provided in the gear case 85 facing the second gear 71.

As mentioned above, the adjustment is made so that one rotation of the first gear 70 corresponds to one rotation of the first wiper 2, and one rotation of the second gear 3 corresponds to one rotation of the second wiper. Adjust the first wiper 2 so that the first wiper 2 is in a horizontal state when the first magnet 72 attached to the first gear 70 reaches a position opposite to the stop reed switch 77 of the first motor. (In FIG. 4, both the first magnet 72 and the second magnet 73 are in the solid line state).

Similarly, when the second magnet 73 attached to the second gear 71 reaches a position opposite to the stop reed switch 78 of the second motor, the second wiper 3 is in a horizontal state. 3 (in FIG. 4, both the first magnet 72 and the second magnet 73 are in the solid line state).

Note that the first wiper 2 and the second wiper 3 are stopped in a horizontal position, and the gear 8.9 and the operating member 6.7 are used to set the support tube 4.5 in the state shown by the two-dot chain line in FIG. Then, the first wiper 2 and the second wiper 3 are stored.

When operating the first wiper 2 and the second wiper 3, turn on the wiper operation switch (not shown).
The control means B performs the following control.

That is, the support cylinder 4 is moved by the gear 8.9 and the operating member 6.7.
．． 5 rotates, and the support cylinder 4.5 rises (as shown by the solid line in FIG. 1).

When the support tube 4.5 is raised to a predetermined position, the first motor 22 (3500 rpm) rotates (step 100 in FIG. 5). When the first motor 22 rotates, the rotation of the first motor 22 is decelerated via the gear 70,
The first wiper 2 rotates via a transmission mechanism 80.81.82.83.

At this time, since the second motor 26 (3000 rpm) is not yet rotating, the planet 5o located on the drive shaft 40 side of the second motor 26 (Fig. 2b) moves the groove 43 of the drum 42 into the first position. The planet 50 contacts the bush 35 provided on the drive shaft 40 of the first motor 22 (FIG. 2c).

That is, when the first motor 22 rotates (the second motor 26 is still in a stopped state), the planet 50 rotates due to the difference in rotation speed between the first motor 22 and the second motor 26. , moves toward the first motor 22 side, and the second drive shaft 40 and the first drive shaft 30 are brought into a connected state by the connecting means A (FIG. 2c).

In addition, just before the planet 50 comes into contact with the bush 35, the first magnet 72 provided on the gear 70 is connected to the reed switch 76 of the second motor, which is installed on the gear case 75 side.
, the operation reed switch 76 of the second motor is turned on, and the second motor 26 begins to rotate (
Fig. 5 Step 101). Yuseiko 50 is bush 3
Since the second motor 26 begins to rotate immediately before contacting the bush 35, the impact force of the planet 50 on the bush 35 can be small.

That is, the first motor 22 rotates and the position of the first magnet 72 of the first gear 70 reaches the position indicated by the broken line in FIG. 4 (at this time, the position of the second magnet 73 of the second gear 71 is , in the solid line state in Fig. 4).

Then, the planet 5o comes into contact with the bush 35, and the planet 5o comes into contact with the bush 35.
0 is regulated, the protrusion 53 provided on the planet 50 is inserted into the first drive shaft 3 through the groove 43 of the drum 42.
0 and the second drive shaft 40 are connected, and the second wiper 3
rotates with a lag with respect to the first wiper 2, forming a lag angle.

That is, until the planet 50 comes into contact with the bushing 35, the second
Since the rotation of the wiper 3 is not transmitted to the wiper 3 and the second motor 26 is stopped, the second wiper 3 rotates later than the first wiper 2.

The second drive shaft 4o and the first drive shaft 30 are connected by the connection means A, and the drive source for the second wiper 3 and the first wiper 2 becomes the same.

Note that while the first wiper 2 and the second wiper 3 are in operation, even if there is a resistance difference between the first wiper 2 and the second wiper 3 due to the windshield surface, etc., the first motor 2
2 (3500 rpm) Second motor 26 (3
Since the rotational speed is higher than that of the first wiper 2 and the second wiper 3, this difference in rotational speed prevents the planet 5o from moving toward the second motor 26 and prevents the rotation of the first wiper 2 and the second wiper 3. are the same, and the second wiper 2 lags behind the first wiper 3, that is, the first wiper 2 and the second wiper 3 rotate while maintaining the delay angle.

Note that when the second motor 26 rotates, the rotation of the second motor 26 is decelerated via the gear 71, and the transmission mechanism 8
The second wiper 3 rotates through 0°, 81', 82°, and 83°.

Turn off the wiper stop switch or wiper intermittent operation switch (both not shown) on the rotary window cleaner.
Then, the first magnet 72 provided on the gear 70 comes close to the first motor stop reed switch 77 installed on the gear case 75 side (the first magnet 72 in FIG. 4 is a solid line, the second (the magnet 73 is in the broken line state), and the first motor 22 is turned off (Fig. 5 Step 1).
02).

In this state, the first wiper 2 is in a parallel state.

Even if the first motor 22 is turned off, the second wiper 3
continues to rotate, and the second magnet 73 provided on the gear 71 on the second motor 26 side approaches the stop reed switch 78 of the second motor (the second magnet 73 in FIG. 4 is in the solid line state). ), the second motor 26 is turned off (step 103 in FIG. 5). In this state, the second wiper 26 is in a parallel state.

Note that just before the planet 50 contacts the bearing 61 (
(adjusted by the moving distance of the screw part 31 by which the planet 50 moves),
Since the second motor 26 is turned off, the impact force of the planet 50 on the bearing 61 can be small.

Therefore, the rotation of the first wiper 2 and the second wiper 3 is stopped in the horizontal position.

Note that even if the first motor 22 stops, the second motor 26 is still rotating, so the planet 50 is rotated by the rotation of the first motor 2 and the second motor 3. Due to the difference in numbers, the second motor 26 is not moved to the second motor 26 side.
), the joint means A that connects the first drive shaft 30 and the second drive shaft 40 is released, and the first drive shaft 30 and the second drive shaft 40 are in a non-coupled state.

(Effects of the Invention) Since the present invention is configured as described above, it produces effects as described below.

A first motor, a first wiper using the first motor as a driving source, a second motor, a second wiper using the second motor as a driving source, and a second wiper. The drive shaft of the first motor and the drive shaft of the second motor are connected to each other by a coupling means that is provided adjacent to the first wiper and connects and disconnects the drive shaft of the first motor and the drive shaft of the second motor. Since the drive shaft of the second motor can be connected or disconnected, a delay angle can be formed between the first wiper and the second wiper during the initial operation of a rotary wind cleaner, and during operation, the second wiper can be connected or disconnected. 1 wiper and 2nd wiper
By using the same drive source as the wiper, the wiper can be rotated while maintaining the delay angle, and when the operation is stopped, the delay angle that occurred during the initial operation can be canceled.

Further, when the first wiper and the second wiper are instructed to stop operating, the first wiper stops in a horizontal position,
After that, the control means that stops the wiper of cylinder 2 in a horizontal position cancels the delay angle that occurred during wiper operation when the wiper operation is stopped, and controls the two wipers in a parallel state. Therefore, when the wiper is intermittently operating, Does not obstruct the driver's field of vision.

Alternatively, when the wiper is not operating, for example, if the wiper is stored in a lower position, the lowering distance can be reduced, and the storage space can be reduced.

Further, the joint means is screwed into a threaded portion formed at the other end of the drive shaft of the first motor, a drum portion having a groove portion at the other end of the drive shaft of the second motor, and the threaded portion. The first motor drive shaft and the second motor drive shaft are connected and uncoupled due to the difference in the rotational speed of the drive shaft of the first motor and the second motor, so that the initial operation of the rotary wind cleaner is At times, a delay angle can be formed between the first wiper and the second wiper, and during operation, the drive source for the first wiper and the second wiper is the same, and the delay angle is maintained and the wiper is operated. This has the effect of being able to eliminate the delay angle that occurred during the initial operation when the operation is stopped.

[Brief explanation of the drawing]

FIG. 1 is a front view of a rotary wind cleaner showing one embodiment of the present invention, and FIGS. 2a, 2b, 2C, and 2d are views showing essential parts of the present invention. , FIG. 2a is an exploded view of the coupling means, and FIG. 2b is an exploded view of the coupling means.
FIG. 2C is a partially sectional view showing the planets located on the second motor side; FIG. 2D is a partially sectional view showing the planets located on the first motor side; FIG. 3 is a perspective view showing the drum portion of the planet and the second drive shaft, FIG. 3 is a cross-sectional view of the support cylinder of FIG. 1, and FIG. 4 is a perspective view of the rotary wind cleaner of the present invention. FIG. 5 is an explanatory diagram for explaining the control, and FIG. 5 is a flowchart showing the control of the control means B of FIG. 4. A...Joint means, B...Control means, 2...First wiper, 3...Second wiper 22...First motor, 26...Second motor 50...Planet 2d Fig. 0

Claims (3)

[Claims] (1) A first motor, a first wiper that uses the first motor as a drive source, a second motor, and a second wiper that uses the first motor as a drive source.
a second wiper whose driving source is a motor;
The wiper and the first wiper are provided close to each other, and a joint means is provided for connecting and disconnecting the drive shaft of the first motor and the drive shaft of the second motor. A rotary window cleaner. (2) a first motor, a first wiper using the first motor as a drive source, a second motor, and a second wiper;
a second wiper whose driving source is a motor;
and the first wiper are provided in close proximity to each other, a joint means for connecting and disconnecting the drive shaft of the first motor and the drive shaft of the second motor, and the first wiper, The rotation characterized in that the first wiper is stopped in a horizontal position when an instruction to stop the driving operation of the second wiper is given, and then the second wiper is stopped in a horizontal position. Formula window cleaner. (3) The coupling means is screwed into a threaded portion formed at the other end of the drive shaft of the first motor, a drum portion having a groove portion at the other end of the drive shaft of the second motor, and the threaded portion. 3. The rotary window cleaner according to claim 1, further comprising a planet that slides in the groove.