JPH035581A - automatic snow shovel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic snow shoveling device that is attached to the roof of a house in a region with heavy snowfall, for example, and is capable of automatically removing accumulated snow.

[Conventional technology]

For example, in regions with heavy snowfall, excessive snowfall can adversely affect the structure of houses, causing windows and doors to fail to open and close, and in old houses, depending on the load of snow, the house may collapse.

A common way to prevent this is to manually remove the snow from the roof using a shovel or the like when a certain amount of snow has accumulated.

There is also a method of removing snow by spraying large amounts of water on the roof to melt the snow.

[Problem to be solved by the invention]

As mentioned above, conventional snow shoveling requires humans to judge the amount of snow and remove the snow manually using shovels, etc. Therefore, it is necessary for people with a certain level of physical strength to do the work. .

In addition, even if you relied on a contractor, there were problems such as not being able to get such people together.

Furthermore, the method of removing snow by sprinkling water requires a large amount of water, which poses an economical problem.

The first invention was made to solve the above-mentioned problems, and it is an automatic invention that can automatically remove a certain amount of snow without manual intervention, and can minimize damage to houses caused by snow. The purpose is to obtain a snow shoveling device.

In addition to the above object, the second invention aims to provide an automatic snow shoveling device that has an easy circuit configuration and can be made at low cost.

[Means to solve the problem]

The automatic snow shoveling device according to the first invention includes: a control unit that detects snow accumulation and stops driving the motor; a drive unit that decelerates the rotational motion of the motor at a predetermined reduction ratio and converts it into sliding motion; A snow shovel is attached to the snow shovel and removes snow by sliding motion.

Further, the automatic snow shoveling device according to the second invention includes: - a timer that outputs an output at regular intervals; and a drive section that is driven by the output of the timer and decelerates the rotational motion of the motor at a predetermined reduction ratio and converts it into a sliding motion. and a snow shovel that is attached to the drive section and removes snow by sliding motion.

C operation] When the control section in the first invention detects a predetermined amount of snow, it drives the motor, and the drive section decelerates the rotational motion of the motor at a predetermined reduction ratio and converts it into a sliding motion, so that the snow shovel The robot performs a sliding motion to remove snow from the roof.

Further, the timer in the second invention constantly clocks,
Outputs the clock every time a certain period of time is counted, drives the monitor,
The rotational motion of the motor is reduced by a predetermined reduction ratio in the drive section and converted into a sliding motion, and the snow shovel is caused to slide to perform a snow removal operation on the roof.

〔Example〕

Embodiments of the snow shoveling device of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the basic configuration of the main parts of one embodiment.

In this FIG. 1, 11 is a motor, 12 is a motor 11
This is a reduction unit that is directly connected to the motor to obtain a predetermined rotational torque and reduction ratio.

Helical gears 14a and 14b are mounted on the rotation axis of the output rotation shaft 13 of this reduction gear unit 12. These helical gears 14a and 14b each include a helical gear 14c,
14d is engaged. Thereby, the rotation direction of the output rotation shaft 13 is changed.

15a is a rotating shaft, and a right-handed male thread is carved on its outer peripheral surface. The other end of the 0-rotation shaft 15a, in which a helical gear 14c is meshed with this right-hand male screw, is supported by a bearing 19a.

Similarly, a left-handed male thread is carved on the outer peripheral surface of the rotating shaft 15b. A helical gear 14d is meshed with this left male thread. The other end of the rotating shaft 15b is supported by a bearing 19b.

These rotating shafts 15a, 15b and the output rotating shaft 13 are supported by bearings 16.

Moreover, the snow shovel 18 is attached to drive parts 17a and 17b. The drive portion 17a is provided with a right-handed male thread. With this right-handed male screw, the drive part 17a is connected to the rotating shaft 15a.
It is screwed together. Thereby, the drive unit 17a converts the rotational movement of the rotating shaft 15a into a sliding movement.

Similarly, the drive portion 17b is provided with a left-hand female thread. The rotating shaft 15b is screwed into the left-hand female thread. Thereby, the drive unit 17b converts the rotational direction of the rotating shaft 15b into a sliding motion.

On the other hand, the snow detection section is composed of a light emitting section 20b and a light receiving section 20a, and can be realized, for example, by using infrared rays and outputting an output when the infrared path is blocked by snow. However, a predetermined time constant is provided so that it does not operate when the path is cut off for a short time.

Further, the position of the snow shovel 18 is determined by the position detection parts 21a and 2.
1b.

These position detection units 21a, 21b and light receiving unit 20a
is output to the control section 22.

The control section 22 is configured to control driving and stopping of the motor 11.

FIG. 2 is a perspective view showing details of the snow shovel 18,
23 in the figure is a branch of the driving portion 17a and the snow shovel 18, and this branch 23 allows the snow shovel 18 to rotate within a predetermined range.

Further, 24 is a stopper for the rotating direction of the snow shovel 18, and is attached to the drive section 17a.

FIG. 3 shows the position detection units 21a and 21b and the control unit 22.
FIG. 2 is a circuit diagram showing an example of the internal configuration of. In FIG. 3, 31a indicates a contact point of the position detecting section 21a, and indicates that the snow shovel 18 is at the position indicated by the solid line when it reaches the position detecting section 21a (the dotted line indicates other times).

31b is a contact point of the position detecting section 21b, which indicates that the snow shovel 18 is at the position indicated by the dotted line when it reaches the position of the position detecting section 21b (the solid line indicates other times).

The stator of the contact 31a is connected to the positive electrode of the driving power source 35, and the negative electrode of the driving power source 35 is connected to the movable element of the contact 31b.

The movable element of the contact 31a is connected to the stator of the contact 31b via a relay 34. A contact S3 of the relay 34 is connected between the movable element and the stator of the contact 31a.

The stator of the contact 31b is connected to the positive pole of the drive power source 35 via a relay 33 and a parallel circuit of the contact Sl and the output contact 32 of the light receiving section 20a of the snow detection section.

Relay 33 has contacts Sl and S2, and relay 34 has contacts S3 to S5. The contacts S4 and 35 are configured to switch to the A and B sides, and the movable terminals of the contacts S4 and 85 are respectively connected to the soil scraper and negative electrode of the drive die [36] of the motor 11.

Contact S4. The B side of S5 is connected to the motor 11, and the contact S
The A side of 4 is connected to the B side of contact S5 via contact S2. The B side of the contact S4 and the A side of the contact S5 are directly connected.

The output contact 32 turns ON when the snowfall reaches a predetermined amount.
This is the result.

Next, the operation will be explained. Now, when there is no snow,
Since the snow shovel 18 has reached the position detection part 21a, the contact 31a is closed, the relay 34 is operated, the contact S3 interlocked with this is ON, and the contact S4 is at the A side position.

However, since the output of the light receiving section 20a of the snow detection section is OFF, the relay 33 does not operate because the contact 32 is OFF, and therefore the contact S2 linked to this is also OFF.
Since it is set to F, the motor 11 is not driven.

Next, when the snowfall reaches a predetermined amount, the light beam from the light emitting section 20b is blocked by the amount of snowfall, the light receiving section 20a no longer receives this light beam, and the light receiving section 20a of the snow detecting section detects the snowfall and detects the light beam. In order to turn on the contact 32, the relay 33 is energized, and by closing the contact 31, it has a self-holding function, and since the contact S2 is also turned on, the positive electrode of the drive power source 36 - contact S4 - contact A closed circuit is formed between S2, the B side of the contact S4 of the motor 11, the A side of the contact S5, the contact s5, and the negative electrode of the driving power source 36, and the motor 11 is driven.

The rotational force of this motor 11 is decelerated by a deceleration section 12 and transmitted to an output rotating shaft 13. A helical gear 14a is attached to this output rotating shaft 13.

14b and helical gears 14c and 14d mesh with each other.

As a result, the rotating shafts 15a and 15b rotate in the opposite direction to the output rotating shaft 13, and the driving portion 17a.

17b converts the rotation direction of the rotating shafts 15a, 15b into a sliding motion. As a result, the snow shoveling board I8 begins to move in the direction of the position detection section 21b.

At this time, the contact 31a of the position detection unit 21b turns OFF as soon as the snow shovel 18 starts to move, but since the contact S3 of the relay 34 is turned ON, the relay 34 has a self-holding function. This contact S4. There is no change in S5, and the motor 11 continues to drive.

When the snow shovel passes in front of the snow detection section 20a, the snow is removed by the snow shovel 18, the light beam from the light emitting section 20b is received by the light receiving section 20a, and the contact 32 is turned OFF.
However, when the contact Sl of the relay 33 is turned ON, the motor 11 continues to drive without any change in the contact S2 due to its self-holding function, and reaches the position detection section 21b, and the contact 31b is turned OFF.

As a result, relays 33.34 are deenergized and relays 33.34 are deenergized.
At 34, the self-holding function is released and contact Sl and 32 are turned OFF.
F, contact S4. S5 switches to the B side.

Therefore, the motor 11 rotates in the reverse direction, and the snow shovel 18 begins to move toward the position detection section 21a.

At this time, the contact 31b of the position detection section 21b is immediately turned on.
However, the relay 34 is connected to the contact 31a of the position detection section 21a.
Since contacts S4 and S3 are both OFF, they are not energized, and therefore contacts S4. S5 also does not change in the state on the B side. Therefore, the snow shovel Fi, 1B is the position detection part 21a.
keep moving towards.

When the snow shovel passes in front of the snow detection unit 21a,
The light is blocked by the snow shovel 18, making it appear as if there is snow, but since the light receiving section 20a of the snow detection section has a predetermined time constant, the light is blocked for a short time, just enough for the snow shovel 18 to pass. It doesn't work.

When the snow shovel 18 reaches the position detection part 21a, the contact 31a is turned ON, so the relay 34 is energized, and the contact 34. S5 is at position A, but the light receiving section 20a of the snow detection section detects that there is no snow, so its output contact 32 is OFF.
Because of this, the relay 33 does not operate. Therefore, since the contact S2 is also turned off, the motor 11 is stopped and stands by in a state where there is no initial snowfall.

If the snow shovel 18 cannot remove the snow in one round trip, the output contact 32 of the light receiving section 20a of the snow detection section
is ON, the snow shovel 18 continues to move back and forth, and the output contact 32 of the light receiving section 20a of the snow detection section is OFF.
When it reaches F, it will stop at the position of the position detection section 21a.

The snow shovel 18 has the structure shown in Figure 2, so if there is snow left, it will not rotate and remove the snow on the return trip.
The snow cover is moved by the stopper 24 only on the outward journey.

Therefore, the snow that is within the movement range of the snow shovel 18 always moves toward the position detection section 21b.
If you set the position to the bottom edge of the roof, the snow on the roof will always fall to the bottom of the roof when it reaches a predetermined amount of snow.
This means that more than a predetermined amount of snow will not remain on the roof.

Next, other embodiments of the invention will be described.

In the above embodiment, snowfall is automatically detected, but a timer circuit (not shown) is used in place of the snowfall detecting means, that is, the light receiving section 20a and the light emitting section 20b. Based on the output from the timer circuit, the control unit 13 drives the motor 11 to drive the snow shovel 1.
8 in the same manner as in the above embodiment, by reciprocating the
The same snow removal effect can be obtained when there is snow. In this case, the circuit can be easily configured.

Further, in the above embodiment, the sliding movement of the snow shovel 18 is controlled by the rotating shafts 15a, 15b and the drive unit 17a.

17b, but as shown in Fig. 4,
The sprocket 1 is attached to the output rotating shaft 13 at a predetermined interval.
3a and 13b, and sprockets 40a and 40 are attached to both ends of the shaft 40 parallel to the output rotating shaft 13.
0b, and sprockets 13a, 40a, 13b
Chains 41a, 41b, etc. are stretched between
On the roof, the same effect as the above embodiment can be obtained even if the cover is slid in a fixed direction.

FIG. 5 is an explanatory diagram of an embodiment for coping with complicated roof shapes. In FIG. 5, numerals 51 to 65 designate the automatic snow shoveling device shown in FIG. 1 as a single unit.

This figure shows a case in which a plurality of automatic snow shoveling devices 51 to 65 (15 in the case of FIG. 5) are arranged in accordance with the shape of the roof.

In this way, by making the automatic snow shoveling device into one unit and making it more compact, several devices can be installed side by side on the roof.
It can also accommodate more complex roof shapes, and can minimize damage to houses due to snow accumulation.

〔Effect of the invention〕

As described above, according to the first invention, when a predetermined snowfall amount is reached after snowfall begins, the motor is driven and the rotational force is converted into sliding motion to cause the snow shovel to slide to remove snow. Since it is configured to perform the work, it can automatically remove snow when it reaches a certain amount without manual intervention, which can minimize damage to houses due to snow accumulation, and
It can also be made into units and has the advantage of being able to accommodate complex roof shapes.

According to the second invention, the timer circuit generates an output at regular intervals, drives the motor based on the output, converts the rotational force into sliding motion, and slides the snow shovel to perform snow removal work. As a result, snow removal work can be performed automatically at fixed intervals regardless of the presence or absence of snowfall, and as in the case of the first invention, it is possible to prevent damage to houses due to snow accumulation and to avoid complex problems caused by In addition to the effect of being able to adapt to the shape of the roof, it is also possible to simplify the circuit configuration, which in turn has the effect of being able to be done at low cost.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the structure of the main parts of an automatic snow shoveling device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the structure of a snow shovel in the same embodiment, and FIG. 3 is a position in the same embodiment. Circuit diagram showing the internal configuration of the detection unit and control unit, No. 4
The figure is a perspective view showing the configuration of the main parts of an automatic snow shovel according to another embodiment of the present invention, and FIG. 5 is a layout diagram showing a state in which the automatic snow shovel of FIG. be. 11 = motor, 17a, 17b... drive unit, 18
. . . Snow shoveling board, 20a . In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) A control unit that detects a predetermined snowfall after snowfall begins and drives and stops the motor; a drive unit that decelerates the rotational motion of the motor at a predetermined reduction ratio and converts it into sliding motion; An automatic snow shovel device that is equipped with a snow shovel that is attached to a drive unit and removes snow by sliding motion. (2) A timer circuit that outputs an output every time a certain period of time is measured, a control unit that drives and stops the motor according to the output of this timer circuit, and a rotational motion of the motor that is decelerated at a predetermined reduction ratio and converted into a sliding motion. An automatic snow shoveling device is equipped with a drive unit that removes snow by a sliding motion, and a snow shovel that is attached to the drive unit and removes snow by sliding motion.