JPH11163556A - Circuit board device and vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner by which number of components is reduced and on which a circuit board can be easily mounted in one motion. SOLUTION: A control circuit board for controlling driving of an electrically- powered blower is accommodated in a case which contains the electrically- powered blower and is provided with a lid for opening and closing the top of a dust collecting chamber partitioned on the negative pressure side. A display means (circuit board device) 84 to be connected to the controlling circuit board is provided on the lid. Multiple mounting parts 102 having engaging pawls 103 for engaging the periphery of a circuit board 86 on reflectors 88 of which light sources 85 opposed to reflecting surfaces 100 are provided. A slit 104 for engaging the periphery of a protecting sheet 87, one side 87a of which is insulator and the other side 87b of which is conductor, is provided on the extremity of the mounting parts 102. The protecting sheet 87 is engaged in the slit with its insulating side 87a being opposed to the circuit board 86 engaged in the mounting parts 102 with a specified gap D to make up the display means 84. Fixing parts of the reflectors 88 are integrally fixed on bosses protruded from the display chamber of the lid with mounting members in one motion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board, a board device for attaching a protection sheet for protecting the circuit board to a member to be attached or a case body, and a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, for example, as a vacuum cleaner accommodating an electric blower, a light source such as a light emitting diode for displaying a driving state of the electric blower, an amount of sucked dust, an air path resistance, and a display for appropriately lighting the light source. There is known a configuration in which a circuit board on which a control circuit is mounted is provided.

In the above-described conventional vacuum cleaner, static electricity is generated by suction of dust during cleaning of the vacuum cleaner, so that one side is insulated and the other side is grounded so that the circuit board is not damaged by the static electricity. Conductive protective sheet is provided. The protective sheet is positioned on a positioning portion such as a rib provided on the case body with the insulating surface facing upward, and the circuit board is opposed to the insulating surface of the protective sheet via a predetermined gap. The circuit board is mounted and fixed to the case body together with the reflector by mounting means such as screws.

[0004]

However, in the above-mentioned conventional vacuum cleaner, the circuit board and the reflection plate must be attached after the protective sheet is positioned, so that the assembling work becomes complicated and the productivity can be improved. In addition, it is difficult to assemble the protection sheet and the circuit board so as to face each other with a predetermined gap, and the protection sheet may not be able to protect the circuit board from static electricity.

Therefore, it is conceivable to integrally attach the protection sheet to the circuit board with a mounting member or the like so as to face the circuit board with a predetermined gap, thereby forming a unit. To attach the circuit board together with the reflector after attaching it to the board with the attaching means,
There is a problem that the assembling work process and the number of parts are increased, and it is not possible to further improve the productivity.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a substrate device and a vacuum cleaner which can be easily mounted in one operation with a reduced number of components.

[0007]

According to a first aspect of the present invention, there is provided a board device having a circuit board on which electric components are mounted, a protective sheet having one surface insulated and the other surface being conductive, and the protective sheet being provided on the circuit board. And mounting means for mounting the protective sheet together with the circuit board on the member to be mounted integrally with the insulating sheet so as to face one surface of the insulating sheet with a predetermined gap therebetween.

Then, the protective sheet is attached to the circuit board on which the electric components are mounted, with the other surface facing the insulating surface of the conductive protective sheet facing a predetermined gap therebetween, and the protective sheet is integrally attached together with the circuit board. Since it is attached to the member to be attached by the means, the circuit board and the protection sheet are easily attached to the member to be attached in one operation while maintaining a constant positional relationship between the circuit board and the protection sheet by one attachment means, and the productivity is improved.

According to a second aspect of the present invention, there is provided a circuit board on which an electric component is mounted, a protective sheet having one surface insulated and the other surface conductive, and a circuit board holding the circuit board and having an insulating property. And mounting means for holding one surface of the supporting member with a predetermined gap therebetween and attaching to the member to be mounted.

The mounting means holds the circuit board on which the electric components are mounted and holds the circuit board with the insulating surface of the conductive protective sheet having the other surface opposed to the circuit board via a predetermined gap. Since it is attached to the member, it is easily attached to the member to be attached in one operation while maintaining a constant positional relationship between the circuit board and the protective sheet by one attaching means, thereby improving the manufacturability.

According to a third aspect of the present invention, there is provided a vacuum cleaner having a case body, a circuit board on which a light source is mounted, a protective sheet having one surface insulated and the other surface conductive, and a reflective surface. And a reflector attached to the case body, holding the circuit board with the light source facing the same, holding the circuit board with an insulating surface facing the gap via a predetermined gap, and attaching to the case body.

The light source mounted on the reflection surface is opposed to the circuit board to hold the circuit board, and the other side of the circuit board is insulated from the insulating surface of the conductive protection sheet via a predetermined gap. Since the reflector thus formed is attached to the case body, the reflector can be easily attached to the case body in one operation while maintaining a constant positional relationship between the circuit board and the protective sheet, thereby improving manufacturability.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vacuum cleaner provided with a substrate device according to the present invention will be described below with reference to the drawings.

5 and 6, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 includes a lower case 2a having an open upper surface, and an upper case 2b for closing a rear upper surface of the lower case 2a. Has a main body case 2 having a front upper surface opened by being sandwiched and joined to a peripheral edge including a front surface, and a lid 4 for opening and closing the opening of the front upper surface is opened and closed on the main body case 2. The case body 5 is configured to be movably supported by a shaft as an attached member.

The main body case 2 has a rotatable turning wheel 6 attached to the front lower surface in the traveling direction, and large-diameter driven rear wheels 7, 7 rotatably provided on the rear side surface of the main body case 2. The vacuum cleaner main body 1 can travel on a floor surface (not shown) with the turning wheel 6 and the driven rear wheels 7 and 7. Also,
A handle 8 slidable in the up-down direction is provided on an upper portion of the main body case 2.

On the other hand, as shown in FIG. 1, a partition 11 having a grid-like communication hole 10 is provided in the vacuum cleaner main body 1, and the main body 1 of the vacuum cleaner main body 1 in front of the partition 11 is moved forward. On the front side in the direction, a dust collection chamber 13 whose upper part is open is defined. In addition, behind the partition 11, an electric blower room 15 containing an electric blower 14 located behind the dust collection chamber 13 is provided.
Are formed. In the dust collecting chamber 13, a dust collecting bag 18 is detachably mounted by a holder 17 pivotally mounted in the dust collecting chamber 13.

A lattice-like communication hole is provided on the front surface of the partition 11.
A first auxiliary dust filter 21 that covers 10 is detachably mounted. The first auxiliary dust collecting filter 21 includes a lattice-shaped frame 22 and a filter 23 as an auxiliary filter inserted into the frame 22.

The dust collecting bag 18 and the first auxiliary dust collecting filter 21 are attached and detached through the upper opening of the dust collecting chamber 13. The lid 4 has a rear end pivotally attached to the upper case 2b and is formed so as to cover the dust collection chamber 13 from the upper side so as to be freely opened and closed.

On the rear side of the partition 11, an inducer 25 is attached. This inducer section 25
A substantially circular communication hole 26 is opened at a position deviated to one side from the substantially center, and a wall-like portion 27 that expands in a trumpet shape is provided on one surface side. At the periphery of the wall-like portion 27, a seal mounting portion 29 is provided in which a seal member 28 that opens in a concave groove shape toward the side where the wall-like portion 27 expands and is attached to the periphery of the partition wall 11 is attached. ing. A support rib 31 is provided on the surface of the wall 27 opposite to the side on which the wall 27 expands, and the support rib 31 projects in a substantially cylindrical shape with the center of the flow hole 26 as the center. Note that this support rib portion 31
The projecting height of the lower part is higher than that of the upper part.
Becomes

Further, on the lower surface of the support rib portion 31, there is provided a mounting rib portion 34 projecting downward in a wall shape and abutting on the upper surface of the lower case 2a via an elastic member (not shown) such as rubber or soft synthetic resin. Is provided.

In the vicinity of the edge of the flow hole 26 on the side where the support rib 31 protrudes, there is provided a positioning portion 35 projecting in a substantially cylindrical shape concentric with the flow hole 26. A substantially flat annular soft member 36 made of, for example, urethane foam resin or the like is mounted between the edge of the flow hole 26 and the positioning portion 35 on the inner peripheral side of the positioning portion 35.

Then, the inducer section 25 is connected to the main body case 2.
The rectification chamber 39 is formed between the partition 11 and the inducer section 25 by being assembled inside, and the inducer section is formed.
On the side where the 25 supporting ribs 31 protrude, a drum chamber for winding and housing the electric blower chamber 15 and a power supply line (not shown) for supplying power is formed.

On the other hand, the electric blower room 15 has an electric blower
14 are arranged. The electric blower 14 includes, for example, a motor unit 41 serving as a motor for driving a fan (not shown) to rotate around a shaft, and a fan cover 42 having a truncated conical or trumpet shape that covers the fan. A substantially circular intake port (not shown) is formed in the center of the front surface of the fan cover 42, and an exhaust port (not shown) is formed in the frame of the electric unit 41. Further, on the periphery of the intake port of the fan cover 42, a flat portion (not shown) that is annular and planar along the radial direction that is the planar direction of the intake port and that is in close contact with the soft member of the inducer portion 25 is provided. I have. Furthermore, a motor head in which a bearing for supporting a shaft (not shown) for driving the fan to rotate is provided substantially in the center of the rear end surface of the electric unit 41.
43 is formed to project rearward in a columnar shape.

At the front end of the electric blower 14, the outer peripheral edge of the fan cover 42, which is the outer peripheral edge of the front end, engages with the support rib portion 31 and the mounting portion 32 of the inducer portion 25. For example, an annular rubber support 45 is fitted, and a rubber buffer 46 is attached to the motor head 43 at the rear end so as to cover the motor head 43.

On the other hand, the lower surface of the upper case 2b projects downward substantially parallel to the partition 11 and abuts on the peripheral surface of the fan cover 42 via a rubber support 45. An upper rib front portion 47 for holding and fixing the fan cover 42 with the mounting portion 32 of the portion 31 is provided. Also the upper case
On the lower surface of 2b, the lower part is located behind the upper rib front part 47 and protrudes downward substantially in parallel, and the lower end part is electrically driven via the buffer 46.
Upper rib rear portions 48 abutting on the peripheral surface of the motor head 43 of the 41 are formed to protrude, respectively.

Further, the upper surface of the lower case 2a is opposed to the upper rib rear portion 48 and protrudes upward.
A lower rib rear portion 49 is formed in abutment with the peripheral surface of the motor head 43 of the 41 to hold and fix the motor head 43 with the upper rib rear portion 48. Then, the electric blower 14 is clamped and fixed by the upper rib front portion 47 of the upper case 2b and the mounting portion 32 of the support rib portion 31 of the inducer portion 25 on the front side where the intake port is opened,
The rear side on which the motor head 43 is provided is sandwiched and fixed between the upper rib rear portion 48 of the upper case 2b and the lower rib rear portion 49 of the lower case 2a, and the electric blower 14 is fixed in the electric blower room 15.

The soft member 36 attached to the inducer section 25 has a portion that comes into contact with the flat portion of the fan cover 42 of the electric blower 14 when the electric section 41 of the electric blower 14 is cleaned.
The support 45 is crushed due to vibrations caused by the driving of the motor and impacts when traveling on the floor, and the electric blower 14
Are overlapped with a dimension wider than the maximum moving distance in the vertical and horizontal directions crossing the running direction. Further, due to the negative pressure generated by driving the electric blower 14, the support member 45 is crushed by the base end of the inducer portion 25, and the soft member 36 is moved more than the maximum moving distance in the front-rear direction which is the axial direction of the electric blower 14. The thickness dimension, flexibility, and the like of the soft member 36 are set so that the dimension crushed in the thickness direction is increased.

On the front end side of the electric blower 14, a dust collecting bag 18 is provided by a soft member 36 and a rubber support 45 for collecting dust sucked by the air inlet of the electric blower 14 together with air. The chamber 13 is air-tightly communicated with the chamber 13 through the communication hole 26, the flow regulating chamber 39, and the communication hole 10.

Further, an exhaust chamber 51 is formed in the vacuum cleaner main body 1 behind the electric blower chamber 15, and an exhaust chamber 51 is formed in the rear upper portion of the upper case 2b of the vacuum cleaner main body 1. Room
An exhaust hole 52 communicating with an exhaust hole (not shown) of the electric blower 14 via an opening 51 is formed on the rear side of the upper case 2b. In the exhaust chamber 51, a second auxiliary dust filter 54 having a high-performance filter 53 similar to the first auxiliary dust filter 21 is detachably provided.

Furthermore, a circuit room is provided above the electric blower room 15.
61 is formed in the circuit room 61, and the electric blower 14
Control circuit board equipped with control means for controlling the driving state of the motor
62 are arranged. Then, on the control circuit board 62, a radiator plate 63 that is bent in a substantially L-shape to radiate a circuit component that is a mounted electric component (not shown) is attached,
The lower end of the heat radiating plate 63 is positioned in the exhaust chamber 51 and is positioned and fixed by an airtight member 64 such as rubber.

On the other hand, a suction portion 71 for detachably connecting a hose (not shown) is provided substantially at the center of the front side of the main body case 2, and the suction portion 71 has an inside opening 72 and an outside opening 73 opposed to each other. Is formed. A cylindrical suction port 74 is formed in the middle opposite to the inner opening 72 and the outer opening 73. This suction port 74 has a vacuum cleaner main body 1 at the front.
And a rear portion thereof opens to the dust collection chamber 13. Further, a shutter 76 that slidably closes the suction port 74 is slidably supported by the suction section 71.

The lid 4 has a front end that can be disengaged from the main body case 2 by a clamp (not shown) or the like, and a rear end that is rotatably supported by the main body case 2. A display room 82 is formed in the lid 4 and is formed in a concave shape which is open upward and partially closed by a translucent window portion 81. The display room 82 is provided inside the display room 82 so as to protrude upward. The display means 84 as a substrate device is mounted on the boss 83 thus provided.

As shown in FIGS. 1 to 3, the display means 84 includes a circuit board 86 on which a light source 85 such as a light emitting diode and a lamp and electric parts (not shown) are mounted.
And a reflector 88 as attachment means.

The circuit board 86 includes the control circuit board 62
A lead wire 91 provided with a connector 90 at the distal end connected to is connected. Also, the protective sheet 87 is shown in FIGS.
As shown in the figure, a thin plate or foil 94 of a conductive metal such as aluminum or copper is provided on one surface of an insulating substrate 93 such as an insulating synthetic resin such as vinyl chloride, a mica plate, or insulating paper. To form a coating, one surface 87a is insulating and the other surface
87b is formed conductive. A lead wire 97 having a connection terminal 96 connected to the ground terminal 95 provided on the circuit board 86 at the end thereof is connected to the other conductive surface 87b of the protective sheet 87 by soldering or the like. I have.

The reflector 88 has a plurality of reflecting surfaces 100 that expand upward and has a fixing portion 101 that is attached to the boss 83 of the lid 4 with an attachment member such as a screw (not shown). ing. The reflecting surface 100 is configured to face a part of the window portion 81 which is translucent when attached to the boss with an attaching member. Further, the reflector 88 is provided with a plurality of mounting portions 102, 102 protruding downward. And, at the tip of these mounting portions 102, 102,
Locking claw portions 103 for locking and holding the outer peripheral edge of the circuit board 86 are provided. In addition, the locking claw portion of the mounting portion 102
A slit 104 is provided on the front end side of the slit 103 so that the peripheral edge of the protection sheet 87 is engaged.

It should be noted that the slit 104 is formed such that the protective sheet 87 is 2.5 to 2.5 mm with respect to the circuit board 86 held by the locking claw 103.
It is formed so as to be held apart with a gap D of about 4.0 mm. That is, the lead terminals 85a of the electronic components mounted on the circuit board 86 and the light source 85 are disposed at a distance t of 1.5 to 3.0 mm, which is a general lead cutting performance of a mounting machine.
In this case, the insulating surface 87a of the protective sheet 87 extends from the pattern surface 86a of the circuit board 86 due to the length of the lead terminals of the manually inserted electronic components.
It is preferable to dispose them so as to be separated by a gap D of about 5 to 4.0 mm.

Next, the assembling operation of the above embodiment will be described.

First, while the light source 85 is positioned on the reflecting surface 100 of the reflector 88, the locking claws 103 of the mounting portions 102, 102 of the reflector 88 are placed.
, 103 are engaged with and held by the outer peripheral edge of the circuit board 86.
Next, the connection terminal 96 of the protection sheet 87 is connected to the ground terminal 95 of the circuit board 86, and the protection sheet 87 is attached to the mounting portions 102, 10 of the reflector 88 such that the insulating one surface 87a faces the circuit board 86.
The two slits 104, 104 are engaged and held, and the display means 84 is integrally formed.

The unitized display means 84
Is inserted into the display room 82 where the lid 4 opens, and the fixing portion 101 of the reflector 88 is fixed to the boss 83 by screwing or the like.
The display room 82 is closed by attaching the cover 81 to the cover 4.

Thereafter, the connector 90 of the display means 84 is connected to the control circuit board 62 previously mounted on the main body case 2, the lid 4 is rotatably supported on the main body case 2, and the Is assembled.

Next, the cleaning operation of the above embodiment will be described.

During normal cleaning, the lid 4 is closed,
Power is supplied through a power cord (not shown)
Slide 76 to open suction port 74. With the shutter 76 opened, a hose (not shown), an extension pipe, and a suction port main body are appropriately connected, and the electric blower 14 is driven to perform cleaning. By this cleaning, dust is sucked together with air from the suction port 74 via a hose, guided to the dust collection chamber 13 of the vacuum cleaner main body 1, and captured in the dust collection bag 18.

The air having fine dust passing through the dust collecting bag 18 passes through the first auxiliary dust collecting filter 21, reaches the rectifying chamber 39 from the grid-shaped communication hole 10, and passes through the wrapper of the inducer 25. The air is blown into the inlet of the electric blower 14 through the flow hole 26 so as to converge with a smooth flow from the rectification chamber 39 by the wall-shaped portion 27 that expands in a shape. This first auxiliary dust collecting filter 21
During the distribution, fine dust collection not captured by the dust collection bag 18 is almost captured. Then, the air sucked from the intake port of the electric blower 14 is exhausted from an exhaust hole (not shown) of the electric blower 14 into the exhaust chamber 51 through the inside of the electric blower 14.
Further, the air that has flowed into the exhaust chamber 51 passes through the second auxiliary dust collection filter 54 and is exhausted from the exhaust hole 52 to the outside air outside the vacuum cleaner main body 1 as exhaust air.

By the way, the main body case 2 and the lid 4 which partition the dust collection chamber 13 where the sucked dust is captured are most easily charged with static electricity. The display means 84 provided on the cover 4
Are the lead wires 97 from the other conductive surface 87b of the protective sheet 87,
Since the control circuit means 62 is grounded via the circuit board 86 and the lead wire 91, the display means 84 is unlikely to be charged with static electricity. Therefore, it is possible to prevent the static electricity charged on the display means 84 from discharging to the circuit board 86 and damaging the circuit.

In the above embodiment, the insulating surface 87a of the conductive protective sheet 87, the other surface of which is grounded, faces the circuit board 86 on which the light source 85 and the electronic components are mounted, with a predetermined gap D therebetween. Reflector, protective sheet 87 with circuit board 86
For example, the circuit board 86 and the protection sheet 87 are held in a predetermined facing relationship in order to mount the reflector 88 unitized to the lid 4 with a mounting member such as a screw. There is no need for a separate member to be mounted so that the circuit board 86 and the protection sheet 87 are opposed to each other by one mounting member for mounting the reflector 88 to the lid 4, that is, one surface of the insulating property of the protection sheet 87. 87a keeps the distance facing the circuit board 86 constant.
While maintaining a constant positional relationship between the light source 85 of 86 and the reflection surface 100 of the reflector 88, the light source 85 can be attached together with the circuit board 86 and the protection sheet 87 in one operation, and assembling productivity and productivity can be improved. .

Further, one surface of the protective sheet 87 having an insulating property is attached to the mounting portion 102 of the reflector 88 for holding the circuit board 86.
Is provided with a slit 104 for holding the protection sheet 87 so as to face at a predetermined distance, so that a separate member for holding the protection sheet 87 is unnecessary, and the facing positional relationship between the circuit board 86 and the protection sheet 87 can be simplified. It can be maintained constant and integrally held.

Further, as a mounting means for holding the circuit board 86 and the protective sheet 87 while keeping the facing positional relationship constant, and attaching the cover sheet 4 to the cover 4, the circuit board 86 is provided with a reflecting surface 100 facing the light source 85. 4, a predetermined position, ie, a display room
In order to use the reflector 88 which needs to be mounted so that the reflection surface 100 faces the window 81 of the 82, the same operation as mounting a conventional reflector at a predetermined position with a mounting member is performed. The protection sheet 86 and the protection sheet 87 can be integrally attached while maintaining a constant opposing positional relationship.

In the above embodiment, the canister-type vacuum cleaner has been described. In addition to an upright-type vacuum cleaner, a circuit board 86 such as an automobile, an airplane, and an air conditioner, which is charged with static electricity, is protected. The same effect can be obtained with any configuration in which the protective sheet 87 is provided. In other words, any configuration that does not include the light source 85 and the reflector 88, such as mounting the protection sheet to the circuit board with a predetermined gap between the mounting sheet itself and the mounting member itself such as a case body. But it can be applied.

[0049]

According to the first aspect of the present invention, the protection sheet is attached to the circuit board with one of the insulating surfaces facing each other with a predetermined gap therebetween, and the protection sheet is integrally attached with the circuit board. Therefore, the circuit board and the protective sheet can be easily attached to the member to be mounted in one operation while maintaining a constant positional relationship between the circuit board and the protection sheet by one mounting means, and the manufacturability can be improved.

According to the second aspect of the present invention, the mounting means for holding the circuit board and holding the protection sheet on the circuit board with one surface of the insulating face opposed to the circuit board via a predetermined gap is attached to the member to be mounted. Therefore, it is possible to easily attach the circuit board and the protection sheet to the member to be attached in one operation while maintaining the facing positional relationship between the circuit board and the protection sheet constant by one attaching means, thereby improving the manufacturability.

According to the third aspect of the present invention, the circuit board is held with the light source mounted on the reflection surface facing the light source, and a protective sheet is provided on the circuit board with one surface of the insulating material interposed therebetween with a predetermined gap. Since the reflector held oppositely is attached to the case body, the reflector can be easily attached to the case body in one operation while maintaining a constant positional relationship between the circuit board and the protection sheet, thereby improving the manufacturability.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a display means of one embodiment of a substrate device of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a partially cutaway side view showing the same protective sheet.

FIG. 5 is a sectional view showing the main body of the vacuum cleaner provided with the display means.

FIG. 6 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 5 Case body as a to-be-attached member 84 Display means as a board apparatus 85 Light source 86 Circuit board 87 Protective sheet 88 Reflector as a mounting means 100 Reflective surface

Claims (3)

[Claims] 1. A circuit board on which electric components are mounted, a protective sheet having one surface insulative and the other surface conductive, and this protective sheet is opposed to the circuit board with one surface insulative with a predetermined gap. And a mounting means for mounting the protective sheet together with the circuit board to the member to be mounted. 2. A circuit board on which electric components are mounted, a protective sheet having one surface insulative and the other surface conductive, and a circuit board holding the circuit board and a predetermined gap formed between the insulating surface and the circuit board. And a mounting means for holding the mounting member so as to be opposed to the mounting member. 3. A circuit board having a case body, a light source mounted thereon, a protective sheet having one surface insulative and the other surface conductive, and a reflective surface having the light source facing the reflective surface. A vacuum cleaner, comprising: a reflector for holding the substrate and holding the insulating surface opposite to the circuit board with a predetermined gap therebetween and attached to the case body.