JP5099108B2 - Equipment - Google Patents

Description

  The present invention relates to equipment having a rotationally driven body that is rotationally driven.

  As equipment that uses a motor as a power source, there is an air blower that includes a fan as a rotationally driven member that is rotationally driven by a motor. Conventionally, as a structure for transmitting the rotation of the motor to the fan, a configuration in which a D-cut is provided in the motor drive shaft and the shaft hole portion of the fan so that the fan does not idle with respect to the drive shaft is used.

  Further, a configuration has been proposed in which vibration-proof rubber is inserted between the D-cut shaft hole of the fan and the motor drive shaft so that the vibration of the motor is not easily transmitted to the fan (for example, see Patent Document 1). .

JP 2003-049793 A

  In the conventional configuration, the outer peripheral surface of the motor drive shaft and the inner peripheral surface of the fan shaft hole contact each other to transmit the driving force, but the contact portion is not a surface but a line, so the contact pressure is high. There is a problem that the vibration of the motor is easily transmitted to the fan, and the vibration transmitted to the fan is generated as abnormal noise. In addition, in the configuration in which the anti-vibration rubber is inserted between the D-cut shaft hole of the fan and the drive shaft of the motor, the anti-vibration rubber is deformed due to aging and the vibration of the motor is easily transmitted to the fan. There was a problem that the vibration transmitted to was generated as abnormal noise.

  The present invention has been made to solve such a problem, and provides equipment that prevents the generation of noise by suppressing the vibration generated by a power source such as a motor from being transmitted to a rotary drive body. With the goal.

  In order to solve the above-described problems, the present invention provides a driving means having a rotating drive shaft and having a rotation preventing portion formed on the drive shaft, a shaft hole portion inserted into the drive shaft, and outside the shaft hole portion. A rotary drive body having a convex portion formed and driven to rotate by the drive means; a first locking portion inserted into a rotation stop portion of the drive shaft and restricting rotation with respect to the drive shaft; and a rotary drive body It is a facility device including a transmission member having a second contact portion that has a surface portion in contact with the convex portion and transmits the driving force of the driving means to the rotary driving body.

  In the equipment of the present invention, the driving force of the driving means is transmitted to the transmission member by contacting the rotation stop portion of the driving shaft of the driving means and the first locking portion of the transmission member. In the transmission member, since the surface portion of the second locking portion is in contact with the convex portion of the rotational driving body, the driving force of the driving means is transmitted from the second locking portion of the transmission member to the rotational driving body. .

  According to the equipment of the present invention, the area where the transmission member and the rotary drive body are in contact with each other has a wide area, and the contact position is away from the center of rotation, so the contact pressure is low, and the drive means Vibrations are less likely to be transmitted to the rotary drive. Thereby, it can prevent that the vibration of a drive means is transmitted to a rotary drive body, and abnormal noise generate | occur | produces.

It is a principal part disassembled perspective view which shows an example of the bathroom heating ventilation dryer as embodiment of equipment. It is a principal part perspective view which shows an example of the bathroom heating ventilation dryer of this Embodiment. It is a principal part top view which shows an example of the bathroom heating ventilation dryer of this Embodiment. It is a sectional side view which shows the whole structure of the bathroom heating ventilation dryer of this Embodiment. It is a sectional side view which shows the operation example of the bathroom heating ventilation dryer of this Embodiment. It is a block diagram which shows the example of installation of the bathroom heating ventilation dryer of this Embodiment.

  Hereinafter, embodiments of the equipment of the present invention will be described with reference to the drawings. In the present embodiment, a description will be given by taking as an example a bathroom heating ventilation dryer as a blower that includes a motor as an example of a drive unit and a fan as an example of a rotary drive.

<Configuration example of bathroom heating ventilation dryer of this embodiment>
FIG. 1 is an exploded perspective view of a main part showing an example of a bathroom heating / ventilation dryer as an embodiment of equipment, and FIG. 2 is a perspective view of a main part showing an example of a bathroom heating / ventilation dryer according to the present embodiment, FIG. 3 is a plan view of an essential part showing an example of a bathroom heating / ventilation dryer according to the present embodiment.

  4 is a side sectional view showing the overall configuration of the bathroom heating / ventilation dryer according to the present embodiment, FIG. 5 is a side sectional view showing an operation example of the bathroom heating / ventilation dryer according to the present embodiment, and FIG. These are the block diagrams which show the example of installation of the bathroom heating ventilation dryer of this Embodiment.

  1 A of bathroom heating ventilation dryers of this Embodiment are equipped with the motor 2, the fan 3 rotationally driven by the motor 2, and the transmission member 4 which transmits the driving force of the motor 2 to the fan 3, The vibration of the motor 2 is provided. The transmission to the fan 3 is reduced.

  The motor 2 is an example of a driving means, and is attached to the body case 11 of the bathroom heating / ventilation dryer 1A as shown in FIG. In the motor 2, an anti-rotation portion 21 called a D-cut having a part of the circumferential surface as a flat surface and a substantially D-shaped cross section is formed on the tip side of the drive shaft 20 to which the fan 3 is attached. Further, the motor 2 is formed with a screw portion 22 on the tip side from the rotation preventing portion 21 of the drive shaft 20. Further, the motor 2 is attached to the drive shaft 20 with a ring 23 such as a C ring or an E ring that regulates the position of the fan 3 in the axial direction.

  The fan 3 is an example of a rotary drive body, and is composed of, for example, a multiblade impeller, a hub 31 in which a shaft hole portion 30 into which the drive shaft 20 of the motor 2 is inserted, and a blade portion that generates an air flow. 32.

  In the fan 3, a convex boss 31 a is formed on one surface of the central portion of the hub 31, and the shaft hole portion 30 penetrates the boss 31 a. The shaft hole portion 30 has a substantially D-shaped inner peripheral surface in accordance with the shape of the rotation preventing portion 21 of the drive shaft 20 of the motor 2. As a result, the orientation of the planar portion of the rotation preventing portion 21 of the drive shaft 20 of the motor 2 and the orientation of the planar portion of the shaft hole portion 30 of the fan 3 matches the orientation of the shaft hole portion 30 of the fan 3 to the drive shaft 20 of the motor 2. When inserted, the idling of the fan 3 with respect to the drive shaft 20 is prevented.

  In the fan 3, ribs 31 b that connect one surface of the hub 31 and the boss 31 a are formed at a plurality of locations on the outer peripheral surface of the boss 31 a outside the shaft hole portion 30, in this example, at four locations. The rib 31b is an example of a convex portion, and has a flat plate shape such as a triangle or a quadrangle in which a flat surface portion 31c is formed on one or both surfaces in the thickness direction, and protrudes radially from the outer peripheral surface of the boss 31a. The rib 31b is provided to reinforce the joint portion between the hub 31 and the boss 31a.

  The transmission member 4 includes a first locking portion 40 that is inserted into the rotation prevention portion 21 of the drive shaft 20 of the motor 2 and a second locking portion 41 that contacts the rib 31 b of the fan 3. In this example, the transmission member 4 is formed by bending a metal plate having a predetermined shape, and is formed in a box shape that covers the boss 31 a of the fan 3.

  The first locking portion 40 penetrates the upper surface of the box-shaped member that covers the boss 31a of the fan 3 in the hole portion whose inner peripheral surface that penetrates the upper surface of the transmission member 4 has a substantially D shape. An anti-rotation portion 40a is formed with a part of the inner peripheral surface as a flat surface in accordance with the shape of the anti-rotation portion 21 of the drive shaft 20 of the motor 2 that is configured by a hole.

  The second locking portion 41 is configured by a flat surface portion 41 a that protrudes outward from the side surface of the transmission member 4 and has a predetermined area that contacts the flat surface portion 31 c of the rib 31 b of the fan 3. In this example, the second locking portion 41 is formed at two locations on the transmission member 4 by bending a part of two opposing side surfaces of the box-shaped member that covers the boss 31a of the fan 3 to the outside.

  The transmission member 4 is aligned with the drive shaft of the motor 2 by aligning the orientation of the plane portion of the rotation prevention portion 21 of the drive shaft 20 of the motor 2 and the plane portion of the rotation prevention portion 40 a of the first locking portion 40. When the locking part 40 is inserted, the rotation with respect to the drive shaft 20 is restricted, and the flat part 41a of the second locking part 41 is in contact with the flat part 31c of the rib 31b of the fan 3 surface to face. The shape and dimensions are set.

  1 A of bathroom heating ventilation dryers are equipped with the two buffer members 24 which are inserted in the drive shaft 20 of the motor 2, and sandwich the fan 3 to which the transmission member 4 is attached from both sides in the axial direction. The buffer member 24 may be formed of a metal plate washer. Moreover, in order to reduce that the vibration of the motor 2 is transmitted to the fan 3, a configuration in which an elastic member such as a ring-shaped rubber is sandwiched between two metal plate washers may be adopted.

  In the bathroom heating / ventilating dryer 1A, each component is inserted into the drive shaft 20 of the motor 2 in the order of the buffer member 24, the fan 3, the transmission member 4, and the buffer member 24, and the fan 3 to which the transmission member 4 is attached is It is sandwiched between cushioning members 24 from both sides in the direction. The fan 3 and the transmission member 4 are inserted in the same direction as the plane portion of the rotation stopper 21 of the drive shaft 20 of the motor 2. The fan 3 is fixed to the drive shaft 20 of the motor 2 by fastening a nut 25 as a fastening member to the screw portion 22 of the drive shaft 20. As a result, the transmission member 4 is restricted from rotating with respect to the drive shaft 20 by inserting the first locking portion 40 into the rotation preventing portion 21 of the drive shaft 20 of the motor 2, and the second locking portion. The flat part 41 a of the part 41 is fixed to the fan 3 in a state where the flat part 31 c of the rib 31 b of the fan 3 is in contact with the flat part 31 c. When the drive shaft 20 of the motor 2 rotates in the direction of arrow A shown in FIG. 3, the flat surface 41 a of the second locking portion 41 of the transmission member 4 that rotates together with the drive shaft 20 is the flat surface of the rib 31 b of the fan 3. The portion 31 c is pushed, and the driving force of the motor 2 is transmitted to the fan 3 by the transmission member 4.

  Next, the overall configuration and installation example of the bathroom heating ventilation dryer 1A will be described with reference to the drawings. 1 A of bathroom heating ventilation dryers are provided with the fan case 12 and the heater 13 which form an air path. The fan 3 has a rotational axis arranged vertically, and the fan case 12 has a lower surface along the axial direction of the fan 3 opening to form a suction port 12a. The fan case 12 has an exhaust port 14 formed on one side in the circumferential direction of the fan 3 and a blower port 15 formed on the lower surface. Further, the fan case 12 includes an air path switching damper 16 that switches an air path from the suction port 12 a to the exhaust port 14 and an air path to the air outlet 15.

  The air path switching damper 16 receives a driving force of a damper motor (not shown) via a cam 16 a and rotates around a shaft 16 b to perform an opening / closing operation. An air passage to 14 and an air passage to the air outlet 15 are formed.

  FIG. 5A shows a state in which the air path switching damper 16 is fully opened. When the air path switching damper 16 is fully opened, the air path to the air outlet 15 is blocked, and a ventilation air path 14a from the suction port 12a to the exhaust port 14 is formed. For this reason, the position where the air path switching damper 16 is fully opened is referred to as the ventilation position of the air path switching damper 16.

  FIG. 5B shows a state in which the air path switching damper 16 is fully closed. When the air path switching damper 16 is fully closed, the air path to the exhaust port 14 is blocked, and a circulation air path 15a from the suction port 12a to the blower outlet 15 is formed. For this reason, the position where the air path switching damper 16 is fully closed is referred to as the circulation position of the air path switching damper 16.

  FIG. 5C shows a state in which the air path switching damper 16 is at an intermediate position between the circulation position and the ventilation position. When the air path switching damper 16 is set at an intermediate position between the circulation position and the ventilation position, both a circulation air path 15a from the suction opening 12a to the blowout opening 15 and a ventilation airflow path 14a from the suction opening 12a to the exhaust opening 14 are formed. The This intermediate position is referred to as a diversion position.

  As the heater 13, for example, an electric heater such as a PTC heater is attached to the air outlet 15. Here, 1 A of bathroom heating ventilation dryers are equipped with the temperature sensor which is not illustrated in the suction inlet 12a, and can detect the temperature of the air sucked in, and based on the temperature etc. of the air sucked in, etc. On and off are controlled.

  In addition, bathroom heating ventilation dryer 1A is comprised with the motor which changes the direction of a some baffle plate and a baffle plate, and may equip the blower outlet 15 with the electric louver which can switch a wind direction. Further, the fan case 12 may be provided with an ion generator that generates both positive ions and negative ions.

  The bathroom heating ventilation dryer 1A has a front panel 18 attached to the lower surface. The front panel 18 is provided with a suction grille 18a facing the suction port 12a of the fan case 12, and is provided with a blowout grille 18b facing the blowout port 15. The front panel 18 has a filter (not shown) exchangeably attached to the inside of the suction grill 18a.

  The bathroom heating ventilation dryer 1A includes an exhaust duct joint 19 at the exhaust port 14. As shown in FIG. 6, the bathroom heating / ventilating dryer 1 </ b> A includes an exhaust grille 19 a installed on the ceiling of the bathroom 101 and attached to the outer wall of a building (not shown), and an exhaust duct joint 19 shown in FIG. 4. Connected at 19b.

  The bathroom 101 is partitioned by an openable / closable door 103 between the adjacent washroom 102 and the bathroom 103 absorbs the air in the other room through the washroom 102 by the louver 103 a provided on the door 103. It has come to include.

<Example of operation of bathroom heating ventilation dryer of this embodiment>
Next, with reference to each figure, the operation example of the bathroom heating ventilation dryer of this Embodiment is demonstrated. 1 A of bathroom heating ventilation dryers are operated by the operation part 104 installed in the washroom 102, the motor 2 is driven according to an operation mode, and the fan 3 rotates. When the fan 3 is driven to rotate, the air BA in the bathroom 101 is sucked from the suction port 12a of the fan case 12 through the suction grill 18a of the front panel 18.

  If the position of the air path switching damper 16 is the ventilation position shown in FIG. 5 (a), a ventilation air path 14a from the suction port 12a to the exhaust port 14 is formed in the fan case 12, so that the suction grille of the front panel 18 is provided. The air sucked from the suction port 12a through 18a passes through the ventilation air passage 14a and the exhaust port 14, and is further exhausted from the exhaust grill 19a to the outside through the exhaust duct 19b.

  Accordingly, in the ventilation operation mode, the motor 2 is rotationally driven with the air path switching damper 16 as the ventilation position, and steam and moisture in the bathroom 101 are exhausted. Moreover, when the air in the bathroom 101 is exhausted to the outdoors, the air RA in the bathroom undressing place 102 is sucked into the bathroom 101 through the louver 103a, so that the air in the other room passes through the louver 103a from the bathroom undressing place 102. It is sucked into the bathroom 101 and exhausted outdoors.

  Therefore, when the ventilation operation mode is executed in the bathroom heating / ventilation dryer 1A, ventilation of a building (not shown) is performed, and the motor 2 is constantly driven so as to obtain a predetermined air volume, whereby ventilation of the building is performed for 24 hours. .

  When the position of the air path switching damper 16 is the circulation position shown in FIG. 5B, a circulation air path 15a from the inlet 12a to the outlet 15 is formed in the fan case 12, so that the air is sucked from the inlet 12a. The air BA passes through the circulation air passage 15a and is blown into the bathroom 101 from the blowout port 15 through the blowout grill 18b of the front panel 18. Since the heater 13 is disposed at the air outlet 15, when the heater 13 is energized, the air passing through the circulation air passage 15 a is warmed and the hot air blows out from the air outlet grill 18 b.

  As a result, in the heating operation mode, the motor 2 is driven with the air path switching damper 16 as the circulation position, and the heater 13 is energized, and hot air blows out into the bathroom 101 while circulating the air in the bathroom 101. Is done.

  In the ion mode, the heater 13 is not energized, generates approximately the same number of positive ions and negative ions in conjunction with the drive of the motor 2, and blows air containing approximately the same number of positive ions and negative ions. By removing both the floating bacteria contained in the circulating air and the floating bacteria in the air of the bathroom 101, generation of mold and the like can be suppressed.

  When the position of the air path switching damper 16 is the diversion position shown in FIG. 5C, in the fan case 12, the ventilation air path 15 a from the inlet 12 b to the outlet 15 and the ventilation from the inlet 12 a to the outlet 14. Since both of the air passages 14a are formed, a part of the air sucked from the suction port 12a passes through the circulation air passage 15a and is blown into the bathroom 101 from the blowout port 15 through the blowout grill 18b of the front panel 18. The

  Further, the remainder of the air sucked from the suction port 12a passes through the ventilation air passage 14a and the exhaust port 14, and is further exhausted from the exhaust grill 19a to the outside through the exhaust duct 19b.

  Thereby, in the dry operation mode or the like, when the motor 2 is driven with the air path switching damper 16 as the branch position, when the heater 13 is not driven, the air in the bathroom 101 is circulated while the air in the bathroom 101 is circulated. Steam and moisture are exhausted.

  Further, when the heater 13 is energized, the steam and moisture in the bathroom 101 are exhausted while circulating the air in the bathroom 101 and blowing hot air into the bathroom 101.

<Effect example and modification of bathroom heating ventilation dryer of this embodiment>
As described above, in the bathroom heating / ventilating dryer 1A having a 24-hour ventilation function that is always operated, the motor 2 is always driven, and when the vibration of the motor 2 is transmitted to the fan 3 to generate abnormal noise, the nighttime When the environment is quiet, etc., noise may be felt.

  In the bathroom heating / ventilating / drying machine 1A according to the present embodiment, the plane portion of the rotation prevention portion 21 of the drive shaft 20 of the motor 2 and the plane portion of the rotation prevention portion 40a of the first locking portion 40 of the transmission member 4 are in contact with each other. Thus, the driving force of the motor 2 is transmitted to the transmission member 4.

  In the transmission member 4, since the flat surface portion 41 a of the second locking portion 41 is in contact with the flat surface portion 31 c of the rib 31 b of the fan 3, the motor 2 is driven from the second locking portion 41 of the transmission member 4. The force is transmitted to the rib 31 b of the fan 3.

  Conventionally, the driving force of the motor 2 is transmitted to the fan 3 by contacting the flat portion of the anti-rotation portion 21 of the driving shaft 20 of the motor 2 and the flat portion of the shaft hole portion 30 of the fan 3. Since the outer peripheral surface of the drive shaft 20 and the inner peripheral surface of the shaft hole portion 30 of the fan 3 are in contact with each other by a line, the contact pressure is high and the vibration of the motor 2 is easily transmitted to the fan 3.

  On the other hand, in the present embodiment, the area where the transmission member 4 and the fan 3 are in contact with each other has a large area compared to the conventional planes, and the contact position is far from the center of rotation compared to the conventional one. Therefore, the contact pressure is lowered, and the vibration of the motor 2 is not easily transmitted to the fan 3. Thereby, the vibration of the motor 2 is transmitted to the fan 3 and it is possible to prevent the generation of abnormal noise. In addition, since the contact pressure is lower than in the prior art, the effect of repeating the operation is small, and the phenomenon that abnormal noise gradually increases with time can be prevented.

  Further, in this example, the second locking portions 41 formed at two opposing positions of the transmission member 4 are in contact with the two opposing ribs 31b of the boss 31a of the fan 3 so that the motor When the driving force 2 is transmitted to the fan 3, no bias is generated.

  In the bathroom heating / ventilation dryer 1A of the present embodiment, a driving force can be transmitted by the transmission member 4 using a rib 31b that has been conventionally formed in the fan 3 for reinforcement. For this reason, if the transmission member 4 is added, generation | occurrence | production of abnormal noise can be prevented with the conventional apparatus. Since the driving force of the motor 2 is transmitted by the transmission member 4, the shaft hole portion 30 of the fan 3 may have a cylindrical shape instead of a substantially D-shaped inner peripheral surface. Further, the transmission member 4 has been described as an example in which a plate material having a predetermined shape is bent. However, the transmission member 4 may be integrally formed by pressing, casting, cutting, or the like. Further, an elastic member such as rubber may be sandwiched between the second locking portion 41 of the transmission member 4 and the rib 31 b of the fan 3.

  Here, as a bathroom heating ventilation dryer, the structure etc. which were provided with the circulation fan and the ventilation fan, and the circulation air path and the ventilation air path became independent may be sufficient. Moreover, as a ventilation apparatus, the other ventilation apparatus provided with the fan as a rotational drive body, such as a heat exchange type ventilation apparatus provided with the heat exchange element, a ventilation fan, an air cleaner, an intermediate | middle duct fan, an air conditioner, may be sufficient.

  The present invention is applied to equipment having a rotationally driven body that is rotationally driven.

  DESCRIPTION OF SYMBOLS 1A ... Bathroom heating ventilation dryer, 2 ... Motor, 20 ... Drive shaft, 21 ... Non-rotating part, 3 ... Fan, 30 ... Shaft hole part, 31 ... Hub , 31a ... boss, 31b ... rib, 31c ... flat part, 4 ... transmission member, 40 ... first locking part, 40a ... non-rotating part, 41 ... 2nd latching | locking part, 41a ... plane part

Claims (3)

A drive means having a rotating drive shaft and having a rotation preventing portion formed on the drive shaft;
A rotary drive body having a shaft hole portion inserted into the drive shaft and a convex portion formed on the outside of the shaft hole portion, and driven to rotate by the drive means;
A first locking portion that is inserted into the detent portion of the drive shaft and restricts rotation with respect to the drive shaft; and a surface portion that is in contact with the convex portion of the rotary drive body; And a transmission member having a second locking portion for transmitting to the rotary drive body. The rotational drive body is formed as a flat plate-like rib projecting outward from an outer peripheral surface of a convex boss in which the shaft hole portion is formed,
The equipment according to claim 1, wherein the surface of the transmission member is in contact with a flat surface formed on one surface of the rib in the thickness direction. The equipment according to claim 1, wherein the driving unit is a motor, and the rotary driving body is a fan.

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