JP4453952B2 - Blade control mechanism of low-rise type frost-proof fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blade control mechanism for a low-rise type defrosting fan.
[0002]
[Prior art]
As is well known, the introduction of tea garden management (referred to as a management system) using a tea garden management device that automates plucking, pest control (insect repellent), tea cutting, etc. in tea gardens has recently been in progress. For the implementation of this management system, a conventional frost-proof fan (a fan for frostbite prevention) installed on a conventional pillar becomes an obstacle, and recently, a low-temperature type frost-proof fan that can be housed in a tea plant is essential. It is believed that. In this management system, the tea garden management device has many operations for moving on the tea tree. At this time, even if a part of the frost-proof fan protrudes from the tea tree, the running of the tea garden management device is hindered. Therefore, it is essential that the frost-proof fan is housed in the tea tree.
[0003]
However, the following improvements can be considered for accommodating the frost-proof fan in the tea plant. When housed in “1”, the blade guard and / or blade of the frost-proof fan comes out of the tea plant. For this reason, it is necessary to remove the blade guard and / or the blade. When removing the blade guard, it is time-consuming, usually several units are difficult to work with, and it is necessary to install it, which takes time, etc. There are improvements. “2” When housed in the tea plant, the vane guard and / or the vane of the defrost fan comes out of the tea plant. For this reason, it is necessary to dig a hole in the ground, which requires labor, usually several units are difficult to dig, and it is necessary to take measures against rainwater accumulated in the hole. “3” There is a method in which the frost-proof fan is accommodated by folding or the frost-proof fan is swung when the frost-proof fan is supported. Since this method requires folding or swinging work, there are problems such as requiring additional equipment and complicating the work.
[0004]
[Problems to be solved by the invention]
As described above, the conventional method for housing the low-rise type frost-proof fan in the tea tree has advantages and disadvantages. Needs to be cleared. Further, various improvements are required in order to reliably and easily accommodate the frost-proof fan in the tea plant.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the blades of the frost-proof fan are securely and easily accommodated in the tea tree, or the accommodation is performed with one touch without requiring labor and skill, or automatically. It is intended to determine the stop position of the blade and set it in the tea tree at the shortest height from the ground.
[0006]
Claim 1 is a low-rise type defrosting fan that descends and accommodates in a tea tree and rises and defrosts on the tea tree,
Stop means for determining the stop position of the blade at the time of lowering in order to determine and accommodate the stop position of the blade in the state where the blade core of the low-profile type defrost fan is closest to the ground The low position type defrosting structure is configured such that the magnet provided on the back surface of the rotating blade of the low position type defrosting fan and the magnet provided on the mounting plate of the low position type defrosting fan are attracted or repelled. This is a frost fan blade control mechanism.
[0007]
The invention of claim 2 is intended to have a configuration in which the three blades can be reliably accommodated in the tea tree when the blades of the low-profile type defrosting fan employ three blades.
[0008]
According to a second aspect of the present invention, the blades of the low-profile defrosting fan according to the first aspect are three blades, and the stop positions of the blades are two of the three blades positioned on the ground side. It is a blade control mechanism of a low-profile frost-proof fan configured such that a space formed between the blades faces the ground .
[0009]
The invention of claim 3 is intended to have a configuration in which the two blades can be reliably accommodated in the tea plant when the blades of the low-profile type defrosting fan adopt the two blades.
[0010]
According to a third aspect of the present invention, the blades of the low-profile type defrosting fan according to the first aspect are two blades, and the stop position of the blades is configured such that the two blades are substantially in a single horizontal state. This is a blade control mechanism of a low-place type anti-frost fan.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment (a preferred example) of the present invention will be described.
[0012]
Reference numeral 1 denotes a support column that is provided so as to be able to be taken in and out of a cylindrical body that is embedded in the ground of a tea bowl (not shown), and this support column 1 is provided with a defrosting fan 2. An illustrated example of the defrost fan 2 will be described. The anti-frost fan 2 includes a cover / support 20, a tilt depression angle adjusting plate 21, a swinging device 22, a motor base 23, a motor 24, a shaft 25, a blade 26 and the like as main components. Therefore, the blade 26 can be adjusted at a depression angle with respect to the support column 1, so that it can be adjusted by blowing down the wind or horizontally blowing air. Moreover, since the frost-proof fan 2 can swing, it is comprised so that ventilation can be carried out in the ground wide area direction of a tea garden. This depression angle adjustment and / or swing control is an example. Moreover, the structure of the anti-frost fan 2 and the number of blades 26 are examples, and are not limited.
[0013]
3 is a stopping means for stopping the blade 26 (the axial core 26-1 of the blade 26) closest to the ground and determining its position. This stopping means 3 is provided between the blade 26 and the defrost fan 2. This is a main part of the control mechanism for stopping the blades of the low-profile type defrosting fan. For example, a magnet 30 (referred to as a magnet 30 of the blade 26) provided on the back surface 26a of the blade 26 and a magnet 31 (adsorption) functioning as the suction side provided on the anti-frost fan 2 (magnet mounting plate 2a). Side magnet 31) and / or magnet 32 functioning as a repulsive side (repulsive side magnet 32). The magnet 30 of the blade 26 and the magnet 31 on the suction side form an attraction region, and the magnet 30 of the blade 26 and the repulsion side magnet 32 form a repulsion region. The magnets 30 and the like are composed of electromagnets, and can be stopped and / or moved by remote operation, can be commanded at a remote location, can be remotely operated in emergency, disaster, and when necessary. There are benefits such as being useful. And, by stopping the blades 26 in the tea tree via the stopping means 3, there is a feature that is useful for the operation and / or safe operation of a tea tree management device such as a tea mower that is reliable and smooth.
[0014]
As an example of this adsorption region, when the magnet 30 of the blade 26 is an S pole (N pole), the magnet 31 on the adsorption side is an N pole (S pole), and the magnet 31 on the adsorption side is the vane 26. It is set as the structure provided in the stop position (adsorption area | region). An example of the stop position of the blades 26 will be described. In the structure of the three blades 26 in FIGS. 1 to 3, when the ground GL is assumed to be horizontal as shown in FIG. 3, the positions A, B, Place in C. 4-6, when the ground GL is assumed to be horizontal as shown in FIG. 6, the two blades 26 are arranged at positions D and E in a substantially horizontal state.
[0015]
In addition, as an example of the repulsion region, a configuration in which the gap between the magnets 30 of the blade 26 (repulsion region) and the N pole (S pole) is employed. Therefore, when the magnet 30 of the blade 26 is in this repulsion region, the blade 26 is guided to the stop position by utilizing the repulsive force between the repulsive magnet 32 and the magnet 30 of the blade 26, and the blade 26. The magnet 30 is guided so as to reach the stop position. An example of the stop position of the repulsive magnet 32 will be described. In the structure of the three blades 26 of FIGS. 1 to 3, when the ground GL is assumed to be horizontal as shown in FIG. Arranged at G and H. 4-6, when the ground GL is assumed to be horizontal as shown in FIG. 6, the two blades 26 are arranged approximately at horizontal character positions I and J.
[0016]
【The invention's effect】
The invention according to claim 1, housed in lowered into the tea plant, a low Tokoro type frost fan frost rises on the tea plant, the axis of the blades of the low Tokoro type frost fan, most ground In order to determine and accommodate the stop position of the blade in a state close to the position, a stop means for determining the stop position of the blade when descending is provided with a magnet provided on the rear surface of the rotating blade of the low-profile defrost fan. This is a blade control mechanism of a low place type defrosting fan configured to adsorb or repel a magnet provided on a mounting plate of the low place type defrosting fan. Therefore, the blades of the frost-proof fan can be reliably and easily accommodated in the tea tree, or this accommodation can be performed with one touch without requiring labor and skill, or the stop position of the blade is automatically determined. It has the features that it can be set in tea plant at the shortest height from the ground.
[0017]
In the invention of claim 2, when the blades of the low location type defrosting fan according to claim 1 are three blades, the stop positions of the blades are two blades located on the ground side among the three blades. This is a blade control mechanism for a low-profile frost-proof fan configured such that a space formed between the blades faces the ground . Therefore, when the blades of the low-profile frost-proof fan employ three blades, there is a feature that these three blades can be reliably accommodated in the tea plant.
[0018]
The invention according to claim 3 is a configuration in which when the blades of the low-profile type defrosting fan according to claim 1 are two blades, the stop position of the blades is a configuration in which the two blades are substantially in a single horizontal state. This is a blade control mechanism for a low-rise type defrosting fan. Therefore, when the blades of the low-profile type defrosting fan adopt the two blades, there is a feature that the two blades can be reliably accommodated in the tea tree.
[0019]
[Brief description of the drawings]
FIG. 1 is a side view of an entire house accommodated in a tea plant when three blades are used for a low-profile type defrosting fan. FIG. 2 is a plan view of FIG. 1. FIG. Front view [Fig. 4] Side view of the entire house housed in a tea plant when the low-profile frost-proof fan uses two blades [Fig. 5] Plan view of Fig. 4 [Fig. Front view of the part 【0020】
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Anti-frost fan 2a Mounting plate 20 Cover and support body 21 Inclination depression angle adjustment plate 22 Swing device 23 Motor base 24 Motor 25 Shaft 26 Blade 26a Back surface 26-1 Shaft core 3 Stopping means 30 Blade magnet 31 Adsorption side Magnet 32 Rebound side magnets A to J positions

Claims (3)

It is a low-rise type frost-proof fan that descends and accommodates in tea trees and rises on tea trees to prevent frost,
Stop means for determining the stop position of the blade at the time of lowering in order to determine and store the stop position of the blade in the state where the blade core of the low-profile type defrost fan is closest to the ground. The low position type defrosting fan is configured to adsorb or repel the magnet provided on the back surface of the rotating blade of the low position type defrosting fan and the magnet provided on the mounting plate of the low position type defrosting fan. Frost fan blade control mechanism. The blades of the low-profile frost-proof fan according to claim 1 are three blades, and the stop position of the blades is formed between two blades located on the ground side in the three blades. A blade control mechanism for a low-rise type defrosting fan having a configuration in which the space is opposed to the ground . The vane of the low location type defrosting fan according to claim 1 has two blades, and the stop position of the blade is a low location type defrosting configuration in which the two blades are substantially in a horizontal character state. Fan blade control mechanism.

Images