JPS63296721A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner using a secondary battery as a power source, and particularly to a switch for controlling an electric blower.

(Prior Art) Conventionally, for example, in a hand-held vacuum cleaner that uses a secondary battery as a power source, a switch for controlling the electric blower on and off is installed near the handle part for supporting the vacuum cleaner body during cleaning. It is set up.

In vacuum cleaners that simply turn on and off an electric blower, the switch is constructed as a normally open push switch that closes only when the operating section is pressed and held, and opens when released.

However, in vacuum cleaners in which the rotation speed of the electric blower can be variably controlled by selectively connecting a resistor between the electric blower and the secondary battery, the connection relationship between the electric blower, the secondary battery, and the resistor is changed. Since the switch must be switched in at least three ways including the '' state, the switch is structured as a slide switch in which the operation part is held in three or more positions.

By the way, when over-discharge of the secondary battery progresses and its internal resistance increases, depending on the configuration of the charging device, it becomes difficult to charge the secondary battery and the life of the secondary battery itself decreases. However, with the above-mentioned conventional vacuum cleaner equipped with a slide switch, the on state is maintained unless the user operates the switch operation part when the switch is turned on, so there is a risk that the vacuum cleaner may be left in the on state. be.

If you forget to turn off the switch and leave it in the on state, the battery will be wasted and the battery will become over-discharged.

(Problems to be Solved by the Invention) As described above, in conventional vacuum cleaners in which the rotation speed of the electric blower is controlled by switching the connections between the resistor, the secondary battery, and the electric blower, a slide switch is used to control the rotation speed of the electric blower. Since the air blower was designed to turn on and off, there is a risk that it may be left in the on state, which poses a risk of over-discharge of the secondary battery, and the electric blower rotates unnecessarily while being used for errands, reducing usage efficiency. There was a bad problem.

The present invention aims to solve these problems, and is designed to provide two methods for vacuum cleaning, in which the number of revolutions of an electric blower is controlled by switching connections between a resistor, a secondary battery, and an electric blower.
The purpose of this is to reliably prevent unnecessary consumption and over-discharge of the battery.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides an electric blower, a secondary battery that drives the electric blower, and a current that is selectively connected between the electric blower and the secondary battery. In a vacuum cleaner in which the rotation speed of the electric blower is controlled by switching the connection with a control resistor using a connection changeover switch, a normally open type switch is provided in a closed circuit including the electric blower and a secondary battery. It is equipped with a switch.

(Function) In the vacuum cleaner of the present invention, the connection changeover switch allows
The connection between the resistor, the secondary battery, and the electric blower is changed to change the rotational speed of the electric blower, and the electric blower is turned on and off using an on/off switch. Since the open/close switch is normally open, the electric blower is always turned off when left unattended, thereby preventing wasteful consumption and over-discharging of the secondary battery.

(Example) Hereinafter, the configuration of an example of the vacuum cleaner of the present invention will be described based on the drawings.

In Fig. 2, 1 is a vacuum cleaner main body, and this vacuum cleaner main body 1
consists of a main body case 2 and a dust collection case 3 detachably attached to the front side of the main body case 2. That is, an engaging piece 5 bent downward at the lower end of the rear surface of the dust collecting case 3 is engaged with an engaging receiving portion 4 formed at the lower end of the front surface of the main body case 2 and having an upwardly opening shape. A clamp 7 pivotably attached to the upper end of the rear surface of the dust collecting case 3 is engaged with an engaging groove 6 that is detachably engaged and opened upwardly and formed at the upper end of the front surface of the main body case 2. It is removably engaged.

A handle portion 11 extending in the front-rear direction is formed at the top of the main body case 2, and a slide switch 13, which is a connection changeover switch, has an operating portion 12 that can be slid back and forth at the front of the upper surface of the handle portion 11. It is provided.

□In addition, a communication port 14 is formed in the front part of the main body case 2, and an electric method J[17] consisting of a fan 15 facing the communication port 14 and a motor 16 for rotating the fan 15 is provided. It is supported and fixed to the lower front side of the main body case 2. Further, as shown in FIG. 4, an exhaust port 18 is formed in the side surface of the main body case 2 facing the electric blower 11117. Further, a secondary battery 19 such as a lead-acid battery for driving the electric blower 11 is provided at the rear end of the main body case 2. It can be freely inserted and removed through an opening 21 which is formed in a shape and is closed by a lid 20 so as to be openable and closable. Further, although not shown in FIG. 2, a cement resistor for current control is provided inside the main body 2.

The dust collection case 3 has an open rear surface, and
The inside is a deaf collection chamber 22, and a dust collection filter 23 is removably installed in this dust collection chamber 22. At the front end of the dust collecting case 3, the dust collecting case 3 is
A cylindrical suction port 24 extending in the front-rear direction that communicates the dust collection chamber 22 with the outside is formed slightly above the lower surface of the housing, and the front opening of the suction port 24 extends downward toward the rear. It is inclined towards. Further, an inclined surface 25 located on the same plane as the curved opening of the suction port 24 is formed on the lower outer surface of the suction port 24 of the dust collection case 3. Furthermore, a normally closed valve element 26 that opens due to wind pressure is provided at the rear end opening of the suction port 24.

A push switch 31, which is a normally open open/close switch, is provided near the bottom of the suction port 24. As shown in FIG. 3, this push switch 31 has a base 32 fixed to the dust collection case 3, and a recess 33 which is opened forward and downward by ribs, and a fixed contact is connected to the bottom of the recess 33. 34 is fixed thereto, and a movable contact 35 that can freely come into contact with and separate from the fixed contact 34 is attached to the recess 3.
3 so that it can move back and forth. The movable contact 35 is always connected to the fixed contact 34 by a spring 36.
is biased in the direction away from the Further, an operating section 37 is fixed to the movable contact 35, and this operating section 37 slidably penetrates the inclined surface 25 of the dust collection case 3 and projects outward. Furthermore, the operation section 3
Brush bristles 38 that protrude forward are implanted in the front end of 1, and a convex portion 3 that protrudes toward the suction port 24 side.
9 is formed.

Further, a pair of left and right contact plates 41 are fixed to the inner surface of the engagement receiving portion 4 of the main body case 2. On the other hand, a pair of left and right contact plates 42 are fixed to the retaining piece 5 of the picture collecting case 3, and are respectively brought into contact with the contact plates 41 so as to be able to come into contact with and separate from the contact plates 41.

The push switch 31 and the electric circuit inside the main body case 2 are electrically connected through these contact plates 41 and 42.

In FIG. 5 and FIG. 6, 43 is a suction port body, and this suction port body 43 is formed in a cylindrical shape, and one end portion is detachably inserted into the suction port 24. A stopper part 44 for regulating the length of insertion of the suction port body 43 into the suction port 24 is formed protrudingly on the outer surface of the suction port body 43. The convex portion 39 of the operating portion 37 of the switch 31 is pressed and held from the front to keep the push switch 31 in a closed state.

Next, the configuration of the electric circuit will be explained with reference to FIG.

The slide switch 13 has five contacts 13a.

13b, 13c, 13d, and 13e, and a contact point 13a that moves into the body and is adjacent to the operating portion 12.

13b, 13b, 13c, 13c, 1
3d, 13d, and 13e, and the conductive piece 13A and the operating section 12 are held in a position where the adjacent contacts 13a...13e are connected. It has become. The push switch 31, the electric blower 17, and the secondary battery 19 are connected in series in this order between the contacts 13a and 13b. Also, mark 1 as points 13a, 13c and contact point 13.
The resistors 45° and 46 are connected between the terminals b and 136, respectively. Further, the contact 13e is an empty contact.

Next, the operation of the above embodiment will be explained.

During cleaning, as shown in FIG. 4, the user holds the handle 11 to support the scrubber body 1, and the front opening of the suction port 24 is placed close to and parallel to the surface 51 to be cleaned, such as the floor. Then, the brush bristles 38 come into contact with the surface to be cleaned 51, and the operating portion 37 of the push switch 31 is pressed, and as shown in FIG. Upon contact, the push switch 31 closes. In this state, electric feed ff1ll! 117 can now be driven,
If the slide switch 13 is closed, the electric blower 17 is turned on, that is, is in a driving state.

That is, only when both switches 13.31 are closed,
The electric blower 17 is in the driving state.

Then, the dust sucked in from the suction port 24 by the drive of the electric blower 1117 is collected by the dust collection filter 23.
It is stored in 2. Further, the brush bristles 38 sliding on the surface to be cleaned 51 scrape up dust on the surface to be cleaned 51. In addition,
Instead of bringing the part of the operating part 37 of the push switch 31 other than the brush bristles 38 into direct contact with the surface to be cleaned 51, the groove structure allows the brush bristles 38 planted in the operating part 37 to contact the h1 remover 51. By doing so, efficient removal is possible and damage to the surface to be cleaned 51 can be prevented.

In addition, by manually operating the operating portion 12 of the slide switch 13 to change the rotation speed of the electric feeder 8i1 machine 17, the suction force can be adjusted as appropriate. When the contacts 13a and 13b of the slide switch 13 are short-circuited, the electric blower R17 and the secondary electricity it! ! 19 are directly connected to form a closed circuit, and the rotational speed of the electric transmission III machine 17 becomes maximum. Further, when the contacts 13b and 13c are short-circuited, the electric blower 17 and the secondary battery 19 are connected through one resistor 45 to form a closed circuit, and the rotation speed becomes intermediate. Furthermore, when the contacts 13c and 13d are short-circuited, the electric blower 11 and the secondary battery 19 are connected to each other.
A C closed circuit is formed by connecting resistors 45 and 46 in series, and the number of rotations is minimized. In addition, the contact point 13d,
When 13e is not short-circuited, the slide switch 13 is in an open state.

When not cleaning, the cleaner body 1 is placed on the surface of the device to be cleaned with its rear or lower surface facing down.

When turning with the rear side down, the operation part 37 of the push switch 31 near the suction port 24 at the front of the t1 remover wood rest 1
does not touch the mounting surface, and the movable contact 35 is separated from the fixed contact 34 by the biasing force of the spring 3G, so the push switch 31 is maintained in the open state. Also, the secondary battery 19 is particularly heavy when placed face down.
is arranged at the rear end of the vacuum cleaner body 1, the center of gravity is located at the rear of the vacuum cleaner body 1, and the inclined surface 25 provided with the operation part 31 on one side of the suction port 24 is used for cleaning. Machine body 1
By being located above the lower surface of the suction port 24
The operating section 37 is located away from the mounting surface. In any case, the vacuum cleaner main body 1 is never left unattended with the operating section 37 touching the mounting surface. That is, at the time of non-return, the push switch 31 provided in the common part of the three types of closed circuits described above is in the open state, so the slide switch 1
3 is closed, the electric blower R17 is always in a stopped state. Therefore, unnecessary consumption and over-discharge of the secondary battery 19 are reliably prevented.

Further, even during cleaning, when the suction port 24 is temporarily separated from the surface to be cleaned 51, the push switch 31 becomes open. By the way, if the suction port 24 does not closely face the surface to be cleaned 51, even if the electric blower 17 is in a driving state, it will not be able to suck in dust and cleaning will not be carried out effectively. However, according to the above configuration, since the electric blower 117 is always in a stopped state when the actual cleaning cannot be performed, unnecessary rotation of the electric blower 11, that is, unnecessary consumption of the secondary battery 19, can be completely avoided. can be prevented, greatly improving usage efficiency.

When cleaning narrow spaces, etc., as shown in FIGS. 5 and 6, the suction port body 43 is inserted into the suction port 24 of the vacuum cleaner body 1, and dust is removed from the suction port body 43. It is good to inhale. When the suction port body 43 is inserted into the suction port 24 , the stopper portion 44 of the suction port body 43 hits the convex portion 39 of the operating portion 37 of the push switch 31 , and the length of the suction port body 43 to the suction port 24 is longer than the required length. In addition to restricting the insertion of
The fishing rod 37 is held depressed and the push switch 31 is closed. Therefore, even if the operating portion 3I of the push switch 31 is not in contact with the surface to be cleaned 51, the electric feeder 17 can be driven by closing the slide switch 13.

In other words, when cleaning by inserting the suction port body 43 in this way, the suction port 24 of the vacuum cleaner body 1 is located away from the surface to be cleaned 51, so the operation part 37 is moved closer to the surface to be cleaned 51. The push switch 31 cannot be closed by pressing it. However, according to the above configuration, since the suction port body 43 is provided with the stopper portion 44 that presses and holds the operating portion 37, cleaning using the suction port body 43 becomes possible.

In addition, in the above practical example, the slide switch 13 is structured to have an off position, but the slide switch 13
does not need to have an off position.

In addition, although the operating portion 3γ of the push switch 31 is configured to be pressed and held by the surface to be cleaned 51, etc., the push switch is provided on the handle portion 11, etc., and the operating portion of the push switch is pressed and held by hand)Δ You can also use it as

〔Effect of the invention〕

According to the present invention, in addition to the connection changeover switch that switches the connection between the electric blower, the secondary battery, and the resistor to control the rotation speed of the electric blower, the circuit that is a closed circuit including the electric blower and the secondary battery has a Since we have installed a hokan-shaped open/close switch,
When the battery is left alone, that is, when the open/close switch is not operated, the electric feeder is always in the OFF state. Therefore, wasteful consumption and over-discharge of the secondary battery can be reliably prevented, and usage efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the vacuum cleaner of the present invention,
Figure 2 is a cross-sectional view of the same as above when left unattended;
The figure is a cross-sectional view of the vicinity of the opening/closing switch when cleaning the above, Figure 4 is a side view of the whole when cleaning the above, and Figure 5 is a cross-sectional view of the vicinity of the suction port with the suction port body inserted as above.
FIG. 6 is a perspective view of FIG. 5 of the same. 13...Slide switch as a connection changeover switch, 17...Electric blower, 19...Secondary battery, 31...Push switch as a normally open open/close switch, 45.46
··resistance.

Claims (1)

[Claims] (1) An electric blower, a secondary battery that drives the electric blower, a current control resistor that is selectively connected between the electric blower and the secondary battery, and a A connection changeover switch that controls the rotation speed of the electric blower by changing the connection, and a normally open open/close switch is provided in a closed circuit including the electric blower and a secondary battery. Vacuum cleaner.