WO2017168710A1

WO2017168710A1 - Electric fan

Info

Publication number: WO2017168710A1
Application number: PCT/JP2016/060785
Authority: WO
Inventors: 芳彦安田; 英明西尾; 比出晴小野; 悠平北島
Original assignee: 三菱電機株式会社
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-05
Also published as: JPWO2017168710A1; TW201737275A; CN108779780B; CN108779780A; TWI607469B; JP6490301B2

Abstract

Provided is an electric fan equipped with: an air blower part provided with an electric motor and a fan; a columnar support part that supports the air blower part; and a pedestal part that supports the columnar support part. The pedestal part is provided with a circuit substrate (4) having a tact switch (5) mounted thereon, a casing (2) for housing the circuit substrate (4), a sheet material (1) which is provided with an embossed section (1a) and which is bonded to the top surface of the casing (2), and a key button (3) fixed on the top surface of the embossed section (1a). The tact switch (5) has a pressing part (5a) disposed beneath the embossed section (1a) and the key button (3); the key button (3) is capable of pressing down the pressing part (5a) until the tact switch (5) comes into operation; and the embossed section (1a) has resilience that enables pushing up the pressed-down key button (3) back to the original position.

Description

Fan

The present invention relates to a fan provided with an operation button on a casing for housing a circuit board.

Conventionally, there has been a demand for a high-value-added fan that has higher functionality, is easy to use for anyone, and has a high design. High reliability is also required for electric fans. An operation button portion that is easily touched by the user and that is easily noticeable is an important part in enhancing design.

The operation button part has a tendency to increase the number of buttons with higher functionality, and it is required to adopt a key button to improve usability.

Patent Document 1 discloses a fan having a structure in which a key button is inserted into a switch boss formed integrally with a casing, and when the key button is pressed, the switch boss supported by a thin portion pushes the tactile switch around a fulcrum. Has been.

Japanese Patent No. 5454295

However, according to the conventional technique, the thin portion is bent around the fulcrum, so that the switch boss and the key button are tilted around the fulcrum with the pushing operation, and the appearance is deteriorated. Moreover, since it is necessary to shape | mold thinly so that a thin part may be bent, it will be easy to produce a deformation | transformation after shaping | molding and a key button will be easy to incline even if it does not operate.

The present invention has been made in view of the above, and an object of the present invention is to obtain a fan that prevents the key buttons from being tilted.

In order to solve the above-described problems and achieve the object, the present invention is a fan including a blower section including an electric motor and a fan, a support section supporting the blower section, and a pedestal section supporting the support section. The pedestal portion includes a circuit board on which the tact switch is mounted, a casing for storing the circuit board, a sheet material bonded to the upper surface of the casing, and a key button fixed to the upper surface of the embossed portion. And having. The tact switch has a pressing portion disposed below the embossed portion and the key button, and the key button can push down the pressing portion until the tact switch operates. The embossed portion has elasticity that pushes the depressed key button to the original position.

The electric fan according to the present invention has an effect of preventing the key button from being tilted.

The perspective view of the electric fan which concerns on Embodiment 1 of this invention The disassembled perspective view of the base part of the electric fan which concerns on Embodiment 1. FIG. The figure which shows the cross section containing the key button of the electric fan which concerns on Embodiment 1. Top view of key button of electric fan according to Embodiment 1 Plan view of spacer of electric fan according to Embodiment 1 The disassembled perspective view of the base part of the electric fan which concerns on Embodiment 2 of this invention The perspective view of the sheet material of the electric fan which concerns on Embodiment 2. FIG. Sectional drawing in the part of the operation part of the base part of the electric fan which concerns on Embodiment 2. FIG. Bottom view of the key button of the electric fan according to the second embodiment Top view of the casing of the electric fan according to Embodiment 2. Side view of the key button of the electric fan according to the second embodiment Sectional drawing in the part of the operation part of the base part of the electric fan which concerns on Embodiment 3 of this invention. Sectional drawing of the base part at the time of key button operation of the electric fan which concerns on Embodiment 3 Sectional drawing of the base part at the time of key button operation of the electric fan which concerns on Embodiment 3

Hereinafter, a fan according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a perspective view of the electric fan according to Embodiment 1 of the present invention. The electric fan according to Embodiment 1 includes a blower unit 100 including an electric motor and a fan, a support column unit 101 that supports the blower unit 100, and a pedestal unit 102 that supports the support column unit 101. The pedestal unit 102 is provided with an operation unit 103 including key buttons 3.

FIG. 2 is an exploded perspective view of the pedestal portion of the electric fan according to the first embodiment. FIG. 3 is a diagram showing a cross section including the key buttons of the electric fan according to the first embodiment. The pedestal part 102 is mounted with a tact switch 5 that receives a user operation, and includes a circuit board 4 that controls the blower part 100, a casing 2 that houses the circuit board 4, and a bottom plate 8 that covers the bottom surface of the casing 2. Further, the pedestal portion 102 includes a sheet material 1 attached to a portion of the operation portion 103 on the upper surface of the casing 2, a spacer 6 attached to the upper surface of the sheet material 1, and a pressing portion of the tact switch 5 for user operation. 5a, and a decorative sheet 7 covering the casing 2 and the upper surface of the spacer 6. The decorative sheet 7 is affixed to the casing 2 and the spacer 6.

The circuit board 4 is provided with a display unit 4a for displaying the setting contents and the operating state of the blower unit 100. In the first embodiment, an LED (Light Emitting Diode) lamp is applied to the display unit 4a. However, the display unit 4a is not limited to the LED lamp. That is, a liquid crystal display device or an organic EL display (organic electroluminescence display) may be applied to the display unit 4a. The display unit 4 a is visible from the outside of the casing 2 through a through hole 2 h that penetrates the casing 2.

The sheet material 1 is formed of a waterproof material. The sheet material 1 is provided with an embossed portion 1 a at a position corresponding to the pressing portion 5 a of the tact switch 5. The key button 3 is fixed to the embossed portion 1 a of the sheet material 1. As a method for fixing the key button 3 to the embossed portion 1a, methods such as adhesion, welding, mechanical fitting, or sticking with a double-sided tape can be applied, but the method is not limited to these methods. A flange portion 3 a having a size that does not penetrate the through hole 7 a of the decorative sheet 7 is provided on the outer peripheral portion of the key button 3. A first depression 2 a is formed on the upper surface of the casing 2. A through hole 2 b is provided in the first recess 2 a at a position corresponding to the pressing portion 5 a of the tact switch 5. The spacer 6 is provided with a through hole 6 a through which the key button 3 passes at a position corresponding to the pressing portion 5 a of the tact switch 5. The thickness dimension of the spacer 6 is approximately equal to the sum of the depth dimension of the first recess 2 a and the thickness dimension of the sheet material 1. The outer shape of the spacer 6 is the same as the outer shape of the first recess 2 a of the casing 2. The spacer 6 is disposed in the first recess 2 a of the casing 2. The decorative sheet 7 is provided with a through hole 7 a at a position corresponding to the pressing portion 5 a of the tact switch 5 through which the flange portion 3 a of the key button 3 does not pass. Since the upper surface of the flange portion 3 a is not bonded to the decorative sheet 7, the key button 3 can be pushed down without being constrained by the decorative sheet 7.

The circuit board 4 is fixed to the screw boss 2 c of the casing 2 with screws 20.

FIG. 4 is a plan view of a key button of the electric fan according to the first embodiment. The key button 3 is provided with an icon mark 3d indicating an operation function. The icon mark 3d is formed on the key button 3 by printing or engraving.

FIG. 5 is a plan view of the spacer of the electric fan according to the first embodiment. The spacer 6 is provided with an icon mark 6b at the edge of the through hole 6a. The icon mark 6b has the same pattern as the icon mark 3d provided on the key button 3 penetrating the through hole 6a.

When the key button 3 is pressed, the pressing portion 5a of the tact switch 5 is pressed, and the circuit board 4 switches functions. When the force of pressing the key button 3 is released, the key button 3 returns to the original position due to the repulsion of the embossed portion 1a of the sheet material 1. That is, the embossed portion 1a has elasticity that pushes the depressed key button 3 to the original position.

In the electric fan according to Embodiment 1, since the key button 3 is fixed to the upper surface of the embossed portion 1a, the key button 3 does not tilt during operation, and the design can be prevented from being damaged. Moreover, since it is not necessary to provide a thin part in the casing 2, a deformation | transformation does not arise at the time of manufacture, the inclination of the key button 3 in the state which is not operated can be prevented, and it can prevent that the designability is impaired.

In addition, since the electric fan according to Embodiment 1 uses the sheet material 1 having waterproof properties, it is possible to prevent water from entering and improve reliability. Moreover, since it is not necessary to provide a thin part in the casing 2, the structure is simple and the rise in product manufacturing cost can be suppressed. Furthermore, since no hole is formed in the sheet material 1, it is possible to prevent dust from entering from the portion of the key button 3.

Further, the decorative sheet 7 is supported by the spacer 6 by installing the spacer 6 between the casing 2 and the decorative sheet 7. Therefore, even if the decorative sheet 7 around the key button 3 is pressed, the decorative sheet 7 does not dent.

Furthermore, since the icon mark 3d is provided on the key button 3, it is possible to prevent the key button 3 from being disposed in the wrong through-hole 6a during manufacturing.

Further, since the flange portion 3a of the key button 3 is covered with the decorative sheet 7, it is possible to prevent dust from entering from the through hole 7a and to improve the design by concealing the gap around the key button 3.

Embodiment 2. FIG.
FIG. 6 is an exploded perspective view of the base portion of the electric fan according to Embodiment 2 of the present invention. FIG. 7 is a perspective view of the sheet material of the electric fan according to the second embodiment. FIG. 8 is a cross-sectional view of the operation portion of the base portion of the electric fan according to the second embodiment. In the electric fan according to Embodiment 2, a through hole 1b is provided in the embossed portion 1a of the sheet material 1. The key button 3 is provided with a boss portion 3b that penetrates the through hole 1b. The boss portion 3 b of the key button 3 is in a position where the tip portion abuts against the pressing portion 5 a of the tact switch 5 provided on the circuit board 4. The key button 3 is further provided with a convex portion 3c. The convex part 3c penetrates the through hole 1b similarly to the boss part 3b. The first recess 2a of the casing 2 is provided with a cylindrical portion 2d through which the boss portion 3b passes.

FIG. 9 is a bottom view of the key buttons of the electric fan according to the second embodiment. FIG. 10 is a top view of the casing of the electric fan according to the second embodiment. FIG. 11 is a side view of a key button of the electric fan according to the second embodiment. The casing 2 is provided with a concave portion 2e having a shape that fits with the convex portion 3c. The convex part 3c and the recessed part 2e are formed in the shape in which only what becomes a pair fits.

In addition, although the convex part 3c is provided in the key button 3 here, and the recessed part 2e is provided in the casing 2, the recessed part may be provided in the key button 3, and the convex part may be provided in the casing 2. FIG.

The other parts are the same as in the first embodiment.

When the key button 3 is pressed, the pressing portion 5a of the tact switch 5 is pressed by the boss portion 3b. The circuit board 4 that has detected that the pressing portion 5a has been pressed performs control to switch functions corresponding to the pressed pressing portion 5a. When the force of pressing the key button 3 is released, the key button 3 returns to the original position due to the repulsion of the embossed portion 1a of the sheet material 1.

In the electric fan according to the second embodiment, even when the upper surface of the embossed portion 1a is inclined, the key button 3 strokes in a state where the boss portion 3b penetrates the cylindrical portion 2d of the casing 2. Therefore, even if the upper surface of the embossed portion 1a is inclined, the inclination of the key button 3 is corrected. Even when the distance between the casing 2 and the circuit board 4 changes due to the change in the size of the electronic component mounted on the circuit board 4, the key button 3 can be changed by changing the length of the boss 3 b of the key button 3. And the pressing portion 5a of the tact switch 5 can be secured, and a wide range of product designs are possible. In addition, since the key button 3 can only be inserted into the concave portion 2e having a shape that matches the shape of the convex portion 3c, it is possible to physically prevent the key button 3 from being installed at an incorrect position, and to prevent manufacturing failure due to human error. Occurrence can be prevented.

Embodiment 3 FIG.
FIG. 12: is sectional drawing in the part of the operation part of the base part of the electric fan which concerns on Embodiment 3 of this invention. In the third embodiment, a second recess 2f having substantially the same size as the root portion of the embossed portion 1a is provided in a portion below the key button 3 of the casing 2. The outer shape of the key button 3 is smaller than the second depression 2f.

In addition, a contact portion 2g on which the key button 3 comes into contact after the key button 3 presses the pressing portion 5a until the tact switch 5 is operated is provided at a portion below the key button 3 of the casing 2. .

13 and 14 are cross-sectional views of the pedestal when the key buttons of the electric fan according to Embodiment 3 are operated. When the key button 3 is pressed, the upper surface of the embossed portion 1a becomes the same height as the surface of the casing 2 to which the sheet material 1 is attached, as shown in FIG. When the key button 3 is further pressed, as shown in FIG. 14, the embossed portion 1a is inverted and convex downward, and the key button 3 contacts the contact portion 2g via the embossed portion 1a. When the key button 3 comes into contact with the contact portion 2g, the key button 3 can no longer be lowered.

In Embodiment 3, since the operation stroke of the key button 3 can be made higher than the height of the embossed portion 1a, the height of the embossed portion 1a can be suppressed and the durability can be enhanced. Moreover, the freedom degree of design can be raised by taking the stroke of the key button 3 long. Further, even when the user presses the key button 3 strongly, it is possible to prevent a strong force from being applied to the tact switch 5 and the circuit board 4 and to prevent the tact switch 5 and the circuit board 4 from being damaged.

The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

1 Sheet material, 1a Embossed part, 1b, 2b, 2h, 6a, 7a Through hole, 2 Casing, 2a 1st depression, 2c Screw boss, 2d cylinder part, 2e recess, 2f 2nd depression, 2g contact part 3 key button, 3a flange, 3b boss, 3c convex, 3d, 6b icon mark, 4 circuit board, 5 tact switch, 5a pressing part, 6 spacer, 7 decorative sheet, 8 bottom plate, 20 screw, 100 blower Part, 101 strut part, 102 pedestal part.

Claims

A fan provided with a blower part provided with an electric motor and a fan, a support part supporting the blower part, and a pedestal part supporting the support part,
The pedestal portion is a circuit board on which a tact switch is mounted,
A casing for housing the circuit board;
An embossed portion, and a sheet material adhered to the upper surface of the casing;
A key button fixed to the upper surface of the embossed portion,
The tact switch has a pressing portion disposed below the embossed portion and the key button,
The key button can depress the pressing portion until the tact switch operates,
The electric fan according to claim 1, wherein the embossed portion has elasticity to push up the depressed key button to an original position.
The key button includes a boss portion on the lower surface,
The embossed portion includes a through-hole through which the boss portion passes,
The electric fan according to claim 1, wherein the casing includes a cylindrical portion into which the boss portion is inserted so as to be capable of a stroke operation.
A plurality of the key buttons;
Each of the plurality of key buttons has a convex portion on the lower surface,
The casing includes a plurality of concave portions corresponding to the convex portions of the plurality of key buttons,
The sheet material includes a through hole through which the convex portion passes,
The electric fan according to claim 2, wherein the shape of the convex portion and the concave portion is a shape in which only corresponding ones can be fitted to each other.
A plurality of the key buttons;
Each of the plurality of key buttons includes a recess on the lower surface,
The casing includes a plurality of convex portions corresponding to the concave portions of the plurality of key buttons,
The sheet material includes a through hole through which the convex portion passes,
The electric fan according to claim 2, wherein the shape of the convex portion and the concave portion is a shape in which only corresponding ones can be fitted to each other.
The electric fan according to claim 1, further comprising a spacer for supporting the decorative sheet between the casing and the decorative sheet.
6. The electric fan according to claim 5, wherein the spacer includes the same icon mark as the icon mark displayed on the key button.
2. The electric fan according to claim 1, wherein the casing is provided with a recess larger than the outer shape of the key button at a lower portion of the key button.
The said casing is provided with the contact part which contact | abuts after the said key button pushes the said press part until the said tact switch operate | moves in the lower part of the said key button. Fan.