fan

Abstract

To establish a seal mechanism between a rotary shaft and a V-ring of a motor installed outdoors.SOLUTION: In a seal mechanism between a rotary shaft on a motor casing 6a of a motor 6 and a fan boss part of a fan 8, an oil seal is established on the rotary shaft side, a V-ring is disposed on the fan boss part side, a body part of the V-ring is disposed on the rotary shaft side, a lip of the V-ring is disposed on the fan boss part side. Thereby the friction of the V-ring is reduced and the durability is improved.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a frost protection fan or a green fan installed in plant cultivation areas such as farm fields, agricultural lands, and turf gardens (collectively referred to as fans when used as a general term) ) .

Background Art

[0002] As is well known, various requirements, for example, improvements 1 to 4 are demanded for the fan boss portion of this type of fan and the sealing mechanism for the rotating shaft of a motor.

[0003] Improvement 1 addresses the problem that rainwater or the like entering the boss portion (synonymous with boss) of the fan causes rust to form on the rotating shaft, making it difficult to remove the fan, and requiring labor and time for removal. Therefore, improvement is desired.

[0004] Improvement 2 addresses the situation that the supporting column is 6 to 8 meters above the ground, and the fan is installed at this height. Therefore, for example, when a failure or malfunction occurs in the fan and / or the sealing mechanism, repair naturally requires working at height. However, since working at height is cumbersome, troublesome, dangerous, and difficult, there is room for improvement. Furthermore, the presence of large-diameter fans makes transportation dangerous and cumbersome, and poses an obstacle during repair.

[0005] Improvement 3 addresses the situation that since the fan is installed outdoors and exposed to rain, the aforementioned intrusion of rainwater may occur. Therefore, it is necessary to improve the sealing mechanism.

[0006] Improvement 4 addresses the situation that among green fans, the pole-mounted type is installed outdoors, and in principle, improvements 1 to 3 are considered to be the same. Considering the necessity of quickly drying turf, a sealing mechanism for the fan boss portion of a green fan and the rotating shaft of a motor is demanded. In addition, among green fans, there is also a self-propelled (wheel-type) form, but in principle, improvements 1 to 3 can be considered to be the same.

[0007] We then searched prior literature for preferred configurations of this type of sealing mechanism, but could not find any specific technical documents that met our requirements. Therefore, we will describe general (other-field) sealing mechanisms.

[0008] For example, in the motor with a built-in sealed rotary sensor described in Japanese Patent Publication No. 2008-104254 (referred to as reference (1)), "a sealed structure is provided in which moisture from the outside air and foreign matter are prevented from entering by interposing a bond, sealing member, etc., at the point where other parts such as a bracket 22 are fitted to the motor case 82." Also, in Japanese Patent Publication No. 2014-107909 (referred to as reference (2)), "the motor shaft is supported by a flange via a bearing, the V-ring seals the gap between the flange and the motor shaft, and the V-ring cover extends radially outward from the motor shaft and covers the V-ring. Furthermore, the V-ring cover is fitted onto the motor shaft and is a sealed structure that restricts axial movement."

[0009] Therefore, in references (1) and (2), the oil seal attached to the motor's rotating shaft side, as intended by the present invention, is a given fact, and a V-ring is attached opposite this attached oil seal and on the fan boss side of the fan. In other words, the V-ring is attached to the rotating shaft of the motor casing and the fan boss of the fan, and the invention aims to establish a sealing mechanism for a motor and fan installed outdoors and at a high location, and does not, if necessary, aim to establish a sealing mechanism by effectively utilizing a given fact, or a structure or position (deployment position). [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Japanese Patent Publication No. 2008-104254 [Patent Document 2] Japanese Patent Publication No. 2014-107909 [Overview of the project] [Problems that the invention aims to solve]

[0011] Taking into consideration the above improvements 1-4, the present invention intends to provide preferred embodiments of sealing mechanisms for frost protection fans or green fans (referred to as fans).

[0012] The aforementioned Green Fan has a structure that is essentially the same as that of an anti-frost fan. The purpose of this Green Fan is primarily to eliminate moisture buildup in the turf garden and / or to maintain a healthy growing environment by preventing pest breeding and infestation. For example, it promotes healthy turf growth, maintains a suitable growing environment, eliminates soil moisture buildup, and / or prevents pest breeding and infestation. [Means for solving the problem]

[0013] This invention is n Improved this type of And Therefore, we propose an optimal structure that minimizes (or eliminates) rainwater intrusion and meets market demands. In order to achieve the aforementioned intent of the present invention, Claim 1- 5 To provide. [Effects of the Invention]

[0014] Claim 1 is, A motor including a rotating shaft, Feathers including the fan boss, An oil seal provided on the rotating shaft, A cover that seals the oil seal, A V-ring is provided on the rotating shaft, The main body of the V-ring is oilseal To Contact, Or attached to the cover, The lip of the V-ring contacts the fan boss. I'll be a fan.

[0015] With this configuration, according to claim 1, a V-ring is disposed opposite the existing oil seal attached to the rotating shaft side of the motor, and on the fan boss portion side of the fan; furthermore, a V-ring is disposed on the rotating shaft of the motor casing and the fan boss portion of the fan, so that a sealing mechanism for a motor and a fan that are installed outdoors and at a high place can be established, existing facts can be effectively utilized, and a structure or position (disposition position) for establishing the sealing mechanism can be achieved. The present invention proposes a mechanism for sealing the end surface of the boss portion on the fan boss portion side by a sealing mechanism (a lip of the V-ring), and is characterized in that rainwater can be prevented from entering.

[0020] Claim 2 comprises: a drain is provided on a lower side of a cover, fan And .

[0021] With this condition setting, in claim 2 , a cover optimal for achieving the object of claim 1 can be provided.

[0022] Claim 3 comprises: the fan is a frost-protection fan, which is provided in a farm field or a lawn garden can a utility pole, and the fan is provided on the utility pole can a frame, and the frame is provided on the frame can a depression angle base Equipped with , the frost-protection fan is provided on the depression angle base , the frost-protection fan has a depression angle, with the depression angle base as a reference, the motor is located at an upper position, and the frost-protection fan Down is located on the side ru, fan And .

[0023] With this condition setting, in claim 3 , a fan optimal for achieving the object of claim 1 can be provided.

[0024] Claim 4 comprises: the fan is a green fan, which is provided in a lawn garden or a farm field can a utility pole, and the fan is provided on the utility pole can A frame and installed on the frame can Downward angle base Equipped with , The GreenFan is installed on the downward-angled base. , The GreenFan has a downward angle, and with the downward angle base as the reference, the motor is above the GreenFan. Down Located in the direction ru, Fa And do.

[0025] With these conditions set, the claim 4 Therefore, we provide a frost protection fan, etc., that is optimal for achieving the objective of claim 1. Cut.

[0028] Claim 5 teeth, The fan is a portable Green Fan. 、 car The wheel and the support It will be done A frame and provided on the frame can A depression angle base that allows for free depression angle adjustment and Equipped with, Fa And do.

[0029] With these conditions set, the claim 5 So, the most optimal way to achieve the objective of claim 1 is, fan We can provide this. [Brief explanation of the drawing]

[0030] [Figure 1] A scaled side view of an example of a defrosting fan (details omitted below). [Figure 2] Scaled end view of a frost protection fan [Figure 3] An enlarged cross-sectional view of an example of the sealing mechanism between the fan boss of the anti-frost fan and the motor's rotating shaft, and an enlarged view of a part thereof. [Figure 4] An enlarged cross-sectional view of the fan boss of the anti-frost fan and the sealing mechanism for the motor's rotating shaft, showing another example, and an enlarged view of a part thereof. [Figure 5]Front view of the self-propelled GreenFan [Figure 6] Side view of Figure 5 [Modes for carrying out the invention]

[0031] The following describes various embodiments of the present invention. Each embodiment is a preferred example and is not limited to the description and / or drawings of each embodiment. Therefore, structures that modify part of the configuration within the scope of the spirit of the invention, or structures that can achieve the same features and effects, etc., are within the scope of the present invention.

[0032] As shown in Figure 1 or Figure 2, A in the figure is an anti-frost fan (hereinafter, as a general rule, it is not shown, but Green Fan B is the same, and only the differences will be explained). This anti-frost fan A consists of, for example, a cylindrical body 2 that fits onto a pole 1 erected in the field, a roughly boat-shaped frame 3 supported on the cylindrical body 2, a crank mechanism (not shown) and a rotating base (no reference numeral) provided on the frame 3, a roughly saddle-shaped downward-angled base 4 that is rotatable (swiveling freely) on the frame 3, a motor base 5 that straddles the downward-angled base 4 and is provided with adjustable downward angle, a fan drive motor 6 provided on the top plate portion of the motor base 5, and blades (fans) 8 provided on the rotating shaft 7 of the motor 6.

[0033] As shown in Figures 1 to 4, the motor 6 consists of a motor casing 6a and a side plate 6b. The rotating shaft 7 is rotatably mounted on the side plate 6b via a bearing 10, which is held watertight by an oil seal 11. This oil seal 11 is sealed by a cover 9 attached to a boss (not indicated) on the side plate 6b using a fastener 9a. In the figures, 9b is a drain opened in the cover 9, preferably on the lower side 9-1. The drain 9b is effective for draining water from the sealing area of ​​the oil seal 11, or for preventing rust formation through water drainage. In particular, the drain 9b is beneficial because the anti-frost fan A is installed at an angle. Although not shown, a drain is also provided in the motor 6. The same applies to the green fan B, although it is not shown (details omitted).

[0034] As shown in the figure, the boss portion 8a of the fan blade 8 is fixed to the rotating shaft 7 (output shaft) (connected by means of fitting or being fitted), and the fan blade 8 is attached to the boss portion 8a. In the figure, 12 is a fastener for attaching the side plate 6b to the motor casing 6a.

[0035] In this invention, a V-ring 13 is positioned in the space H formed between the shaft portion of the shaft end portion 7a (negative pressure side) of the rotating shaft 7 and the connecting side of the boss portion 8a. For example, the V-ring 13 is positioned between the rotating shaft 7 and the boss portion 8a which is provided with a step (connected). Preferably, the main body portion 13a of the V-ring 13 is positioned on the outer surface 9c (boss portion 8a side) of the cover 9, and / or the lip 13b of the V-ring 13 is positioned on the end face 8c of the fan boss portion side 8b, thereby enabling, for example, a reduction in friction of the V-ring 13, improved durability, and improved contact pressure of the lip 13b. In this example, the main body portion 13a is pressed against the oil seal 11 on the rotating shaft portion side 7b, and / or the lip 13b is pressed against the end face 8c of the fan boss portion side 8b.

[0036] In other words, the present invention proposes a mechanism in which the end face 8c of the rotating shaft side 7b of the boss portion 8a is sealed with a sealing mechanism (lip 13b of the V-ring 13), which has the advantage of eliminating rainwater intrusion from arrow X (rainwater intrusion path) as shown in Figure 3, etc. This eliminates rust formation on the rotating shaft 7 due to rainwater intrusion into the boss portion 8a of the frost protection fan A, and also facilitates and simplifies the removal of the frost protection fan A, while simultaneously simplifying and shortening the time required for repairs, maintenance, etc.

[0037] Furthermore, as in this example, the main body 13a of the V-ring 13 is pressed against the fan boss side 8b of the oil seal 11, and / or the lip 13b of the V-ring 13 is pressed against the end face 8c of the rotating shaft side 7b of the boss 8a. This arrangement ensures watertightness and allows for the improvements described in 1-4 of the present invention.

[0038] The cylindrical body 2 and the frame 3 are provided with a mechanism for rotating a turntable (not indicated), which will be described later. For example, the main components are a drive motor 6 provided (built into) the frame 3 and / or the cylindrical body 2, a transmission mechanism (not shown) provided in the frame 3 consisting of a group of gears for transmitting rotational force from the motor 6, a reduction mechanism provided in the frame 3 consisting of a group of gears for reducing the rotational force of the transmission mechanism, and a crank mechanism provided horizontally in the frame 3 for converting the rotation of the reduction mechanism into crank motion.

[0039] Next, to explain the movement and connection of this mechanism, the rotational force of the drive motor 6 is transmitted to a transmission mechanism and a reduction mechanism (not shown), and then reduced before being transmitted. The rotation reduced by this reduction mechanism is converted into crank motion by a crank mechanism (not shown). This rotation is then transmitted to a rotating shaft (not shown) vertically attached to the end of the crank mechanism, causing this rotating shaft (not shown) to rotate (reciprocating motion "rotation within a predetermined range"). Through this reciprocating motion, the depression base 4 reciprocates as described later (forming the basis for the oscillating motion of the fan 8). The reciprocating motion of the rotating shaft (not shown) is transmitted to a turntable fixed to the top of the rotating shaft (not shown). The rotation (reciprocating motion "rotation within a predetermined range") of this turntable is transmitted to a cap (not indicated) fixed (fitted) to the turntable and which rotates synchronously (reciprocating motion "rotation within a predetermined range"). Therefore, the rotation of the cap is transmitted to the downward angle base 4 (which is fixed to the cap by welding or other means and installed at intervals on the frame 3), and this downward angle base 4 rotates (a swivel motion within a predetermined range). The rotational movement of the downward angle base 4 is then transmitted to the motor base 5, which is fixed to the downward angle base 4. As a result, this powers the oscillating motion (swivel movement) of the blades (fan) 8 installed on the motor base 5.

[0040] As described above, the present invention preferably has the main body portion 13a of the V-ring 13 attached to the outer surface 9c (boss portion 8a side) of the cover 9, and / or the lip 13b of the V-ring 13 attached to and pressed against the end face 8c of the rotating shaft portion 7b of the boss portion 8a. This arrangement ensures, for example, watertightness, and achieves the intent of the present invention, namely, establishing a sealing mechanism between the motor 6 and the frost protection fan A installed outdoors and at a high location, and effectively utilizes established facts to achieve a structure or position (installation position) for establishing a sealing mechanism, and also has the features of being able to achieve the improvements shown in 1-4.

[0041] In configurations using commercially available V-rings 13, Figure 3 shows an example where a commercially available V-ring, such as a V-30S, is installed on the boss portion 8a of the antifrost fan A and the sealing mechanism of the rotating shaft 7 of the motor 6, with a larger main body portion 13a. Figure 4 shows an example where a commercially available V-ring, such as a V-25S, is installed on the boss portion 8a of the antifrost fan A and the sealing mechanism of the rotating shaft 7 of the motor 6, with a slightly smaller main body portion 13a compared to the V-30S.

[0042] Figures 5 and 6 show a preferred example of a self-propelled green fan B, in which a pair of wheels 20, 20 (let's call them 20) are equipped with green fans B. For example, it consists of wheels 20, a frame 21 (cart) supported so as to rest on these wheels 20, a depression base 22 (depression means) provided on the frame 21 so as to be able to adjust the depression angle, and a green fan B (the same applies to frost protection fan A) provided on the depression base 22 so as to be able to adjust the depression angle. Therefore, for example, after watering the lawn, the green fan B is operated to speed up the drying of the grass and / or soil, and to speed up the wet state. This operation is used to eliminate stuffiness in the lawn and / or to prevent the breeding and arrival of pests. In the figures, 23 is a fan guard.

[0043] The structure of Green Fan B, as described above, has the same mechanism as the structure of Frost Protection Fan A, and is described in accordance with the above explanation.

[0044] Furthermore, although not shown in the figures, the present invention can also be applied to equipment in which a frost protection fan or the like is mounted on a frame consisting of support columns and / or support columns and / or crossbars on a crawler, with the downward angle of the fan adjustable.

[0045] The embodiments described above are preferred examples. Structures that modify part of the configuration within the scope of the spirit of these embodiments, or structures that can achieve the same features and effects, etc., are within the scope of the present invention. [Explanation of symbols]

[0046] A frost protection fan B Greenfan H space X Rainwater intrusion route 1 Pillar erection 2 cylinders 3. Stand 4. Depression base 5 Motor base 6 motors 6a Motor casing 6b side plate 7 Rotation axis 7a Shaft end 7b Rotation shaft side 8 fan blades 8a Boss section 8b Fan Boss section 8c end face 9 Cover 9-1 Lower side 9a Fastener 9b Drain 9c External surface 10 bearings 11 Oil seal 12 Fasteners 13 V-rings 13a Main body 13b Lip 20 wheels 21 frames 22. Depression base (depression mechanism) 23 Guard

Claims

1. A motor including a rotating shaft, Feathers including the fan boss, An oil seal provided on the aforementioned rotating shaft, A cover that seals the oil seal, The rotating shaft is provided with a V-ring, The main body of the V-ring is in contact with the oil seal or attached to the cover. The lip of the V-ring contacts the fan boss portion. fan.

2. A drain is provided on the underside of the aforementioned cover. The fan according to feature 1.

3. The fan is an anti-frost fan and comprises a pole to be erected in a field or turf garden, a frame to be erected on the pole, and a downward angle base to be erected on the frame. The aforementioned frost protection fan is provided on the downward-angled base, The defrosting fan is equipped with a downward angle, and with respect to the downward angle base, the motor is positioned above and the defrosting fan is positioned below. The fan according to claim 1 or 2.

4. The aforementioned fan is a green fan, comprising a pole to be erected in a turf garden or field, a frame to be erected on the pole, and a downward angle base to be erected on the frame. The Green Fan is provided on the downward-angled base, The GreenFan has a downward angle, and with respect to the downward angle base, the motor is positioned above and the GreenFan is positioned below. The fan according to claim 1 or 2.

5. The fan is a portable green fan, It comprises a wheel, a frame supported by the wheel, and a depression angle base provided on the frame that allows for depression angle adjustment. The fan according to claim 1 or 2.

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