JPH0824656B2 - Electric vacuum cleaner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly, to a printed circuit board arrangement and a connection processing structure.

2. Description of the Related Art In conventional vacuum cleaners, a printed circuit board for controlling suction performance is generally incorporated in the main body and is internally connected.

However, since the inside of the cleaner body is heated by the electric blower, the cord reel cord, the printed circuit board itself, etc., the temperature rises and the life of electronic components on the printed circuit board is shortened. There was a problem of making it short.

Further, when a printed circuit board that generates a large amount of heat is used, if the printed circuit board is housed inside the main body, it will not have a service life. In this case, since the connection is performed inside the body, the work of threading the lead wire occurs, which is very bad in the work.

It is an object of the present invention to attach a printed circuit board to the outside of the main body, which is advantageous in terms of temperature life, and to facilitate wiring work, and also to obtain a configuration that is easy to perform when developing specifications by changing the control method. There is.

Means for Solving the Problems In order to achieve the above object, in an electric vacuum cleaner of the present invention, an electric blower and a cord reel are housed in a dust collection chamber for collecting dust that is opened and closed by a dust box lid. The main body of the vacuum cleaner, which has a side-by-side electric blower chamber and a cord reel chamber, which are partitioned by a partition wall and which are arranged in parallel at the rear, and the upper and lower bodies are connected to each other, and the electric blower chamber are separated from each other. An electric blower cover surrounding the outer side of the electric blower in the electric blower chamber and provided with two claws and an exhaust port near a part of the outer periphery, and a cooling fin, The fins are arranged in the space formed above the upper body and the semiconductor element engaged and fixed to the two claws through the holes formed in the cooling fin, and are attached to the space wall by screws. The bottom surface The printed circuit board on which the switch is placed and the printed circuit board are wired and rush into the electric blower room,
A connector to which the semiconductor element is connected is provided, and the switch is sandwiched between a printed circuit board and a space wall.

Operation Since the electric vacuum cleaner configured as described above has the printed circuit board other than the semiconductor element on the outside of the main body, the cooling effect is improved, and the parts having high heat resistance are not used. In addition, the wiring process is less likely to be performed in a narrow space inside the main body, which facilitates the wiring work.

In addition, if the specifications of the printed circuit board mounting plate are changed, the specifications can be changed immediately, so that it is very easy to handle at the factory.

Embodiments Embodiments will be described below with reference to the drawings. In FIGS. 1 to 17, reference numeral 1 denotes a dust collecting chamber formed in the front portion of the cleaner main body, and a paper bag 2 is installed inside the dust collecting chamber to collect excess dust. Behind the dust collecting chamber 1, an electric blower chamber 4 for accommodating the electric blower 3 and a cord reel chamber 6 for accommodating the cord reel 5 are arranged in parallel, and the cord reel chamber 6 and the electric blower chamber 4 are arranged in parallel. The space is partitioned by a partition wall 7.

The main body of the vacuum cleaner includes a lower body 8, an upper body 9 and the dust collecting chamber 1 described above.
The upper and lower bodies 9 and 8 are connected by screws 11.

The electric blower chamber 4 and the dust collecting chamber 1 are partitioned by a front wall 12 of the lower body 8, and a filter 13 is provided in front of the front wall 12 to prevent dust from entering the electric blower 3 when the paper bag 2 is torn. It is attached via frame 14. Filter frame 14
The locking piece 15 integrated with this is locked to the edges of the front wall 12 through the openings. Inside the electric blower chamber 4, there are provided a front support rubber 16 for supporting the front of the electric blower 3 and a rear support rubber 17 for supporting the rear of the electric blower 3, and further, an electric blower cover 18 is provided on the outer periphery of the electric blower 3, which is located above and below the electric blower cover 18. The rear support rubber 17
Support dually to prevent the vibration of the electric blower 3 from being transmitted to the cleaner body. Inside the electric blower cover 18, there is provided a soundproof plate 19 such as urethane foam that has been subjected to flame retardant treatment. Two claws 20 are integrally formed on the outer periphery of the electric blower cover 18 in accordance with the die removing direction, and holes 23 provided in the cooling fins 22 of the semiconductor element 21 are engaged with and fixed to the claws 20. There is. An exhaust port 24 is provided in a part of the electric blower cover 18 corresponding to the cooling fin 22 to enhance the cooling effect. A rib 26 formed integrally with the lower body 8 is provided with a pressure sensor 25 on the lower right front side of the electric blower chamber 4.
The rib 27, which is integrally formed with the partition wall 7 at the rear side, is fixed and secured by a rib 27. A cutout hole 28 is provided in a part of the side surface of the partition wall 7, a connector 29 is fitted therein, and the other is fixed by a screw 30.

A printed circuit board 31 is fixed above the upper body 9 via a printed circuit board mounting plate 32, is wired together with a switch 33, and is wired to a connector 34. Connector 34
Is fitted in a hole 35 provided in the upper body 9, and the printed board mounting plate is fastened with screws 36 from above.

At this time, the switch 33 is also held and fixed together with the upper body 9.

If this connector 34 is integrated with the printed board mounting plate 32, the work of assembling into the main body can be further improved. 37 is a petal cover, 38 is a switch petal,
39 is a brake petal, 40 is a brake lever, 41 is an exhaust guide, 42 is a rear cover, and a rear cover packing 43 and a clean filter 44 are set. 45 is a roller, 46
Is a caster roller.

EFFECTS OF THE INVENTION Since the present invention is configured as described above,
The following effects are achieved.

First, since the printed circuit board can be installed outside the main body except for the triac part, it is not necessary to use an electronic part having high heat resistance, and the cost can be reduced. Further, the wiring work can be performed outside the limited space under the body, so that workability is improved.

Furthermore, until now the switch had to be fixed with screws etc., but temporarily fixed to the printed circuit board mounting plate,
When it is mounted on the body, it can be held so that the mounting parts can be eliminated. Also, the model is expanded by the control method, the main body can be shared, and the model can be switched by changing only the process after the mounting work of the printed circuit board mounting plate. If the connector of this connection is integrated with the printed circuit board mounting plate, the work of assembling into the main body becomes easier.

In addition, the triac is attached by the claws that are integrally provided on the electric blower cover, which eliminates the need for attachment parts. Further, the exhaust port of the electric blower cover is arranged so that the exhaust gas directly hits the cooling fins of the triac, so that the cooling effect is improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric vacuum cleaner showing an embodiment of the present invention,
2 is a horizontal sectional view of the vacuum cleaner, FIG. 3 is a horizontal sectional view of the vacuum cleaner, FIG. 4 is a top view, FIG. 5 is a side view, FIG. 6 is a front view, and FIG. 7 is a rear view. Figure, Figure 8 is a bottom view, Figure 9 is a vertical sectional view of an electric vacuum cleaner with other specifications, Figure 10, Figure 11, and Figure 12.
Figure is a top view, Figure 13 is a perspective view of the printed circuit board mounting plate and connector, Figure 14 is a perspective view of the same body, Figure 15 is a sectional view of the partition wall, and Figure 16 is an exploded perspective view of the electric blower cover and semiconductor elements. FIG. 17 is a perspective view of the pressure sensor section. 1 ... dust collection chamber, 3 ... electric blower, 4 ... electric blower chamber, 5 ... cord reel, 6 ... cord reel chamber, 7 ...
… Partition wall, 8… Lower body, 9… Upper body, 10… Dust box lid, 18… Electric blower cover, 21… Semiconductor element, 25… Pressure sensor, 29,34… Connector, 31
…… Printed circuit board, 32 …… Printed circuit board mounting plate, 33 ……
switch.

Claims (1)

[Claims] 1. A dust collection chamber for collecting dust that is opened and closed by a dust box lid, has an electric blower and a cord reel in the front part, and an electric blower chamber and a cord reel chamber, which are separated by a partition wall and arranged in parallel and horizontally, are provided. A vacuum cleaner main body having upper and lower bodies coupled to each other at a rear portion, a space portion formed above the upper body so as to be separated from the electric blower chamber, and an outside of the electric blower in the electric blower chamber Siege,
An electric blower cover provided with two claws and an exhaust port near a part of the outer circumference, and a cooling fin, and the fin is engaged and fixed to the two claws through holes formed in the cooling fin. The semiconductor element and the printed circuit board, which is arranged in the space formed above the body, is attached to the wall of the space by screws, and the printed circuit board on which the switch is arranged on the lower surface is wired. An electric vacuum cleaner having a connector to which the semiconductor element is connected, the switch being sandwiched between a printed circuit board and a wall of a space portion while protruding into an electric blower chamber.