JPS6349489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner that collects captured dust in a dust collection bag.

Conventionally, in this type of vacuum cleaner, a sounding tube that issues an alarm by air flow is provided on the suction side of the cleaner body, and the air flow system is usually closed by an overbody. Therefore, if you forget to attach the excess body, air will flow into the sounding cylinder and issue an alarm (for example, Japanese Utility Model Publication No. 51-72977, Japanese Patent Application Laid-Open No. 56-15718)
(U.S. Pat. No. 3,745,965).

However, these devices use a valve mechanism to control the air flow in the sounding cylinder, which makes the configuration complicated and requires a special air flow path to flow through the sounding cylinder, which makes cleaning difficult. This hindered efforts to make the machine itself more compact, and in some cases made it difficult to use. In addition, the air flow path is sometimes clogged with dust, making it impossible to reliably issue an alarm.

The present invention solves these conventional problems and provides a vacuum cleaner with a simple structure, easy to assemble, and equipped with an alarm means that performs a reliable alarm operation.

In order to achieve the above object, the present invention includes a vacuum cleaner body that includes a built-in electric blower and a dust collection chamber formed on the suction side thereof, and a lid body that airtightly closes the opening of the dust collection chamber through packing. , a dust collection bag is installed in the dust collection chamber so as to be freely accessible and removable, and has a mouth core supported by a holder located at the opening of the dust collection chamber, and the presence or absence of this dust collection bag is detected, and the dust collection and alarm means for issuing an alarm when there is no bag,
This alarm means includes a cylindrical packing having a substantially funnel-shaped lip that is attached to the inner lid provided on the back side of the lid body and closed by the mouth core, and one end of the cylindrical packing having an open end that is inside the lid body. It consists of a press-fitted alarm tube, and a hole from which a reed piece is exposed is formed in a part of the alarm tube located in the space between the lid and the inner lid.

According to the present invention, the alarm means can be rationally incorporated by utilizing the space between the lid and its inner lid. In particular, the assembly requires only attaching a cylindrical packing to the inner cover and press-fitting the alarm pipe into it. Furthermore, since the hole that exposes the reed piece is inside the lid, there is no chance of it becoming clogged with dust.

Examples thereof will be described below with reference to the accompanying drawings.

In the figure, upper and lower body members 2a and 2b constituting the vacuum cleaner body 1 have parts for holding an electric blower 3 and a cord reel 4 inside, and are divided into upper and lower parts near the center line of the electric blower 3. and are fastened together with screws (not shown). 5 and 6
are the front and rear support rubber that supports the electric blower 3,
7 is a button for unlocking the cord reel 4. A filter body 8 is removably disposed on the front suction side of the electric blower 3, and an expander 9 is further disposed in front of the filter body 8.
A dust collection chamber 15 is formed. This expander 9 is swingably held via protrusions 10 rotatably inserted into the upper and lower main body members 2a and 2b, and has ribs 30 planted on its inner peripheral surface. Reference numeral 11 designates a handle having a grip portion 12 on the outside, which rotatably fits into a through hole 13 formed in the upper body member 2a, and has an eccentric cam 14 integrally formed at one end facing between the ribs. There is. Reference numeral 16 designates a dust collection bag having a cap 17 at the bag opening, and the cap 17 is supported by a holder 18. This holder 18 is rotatably disposed with respect to the lower body member 2b by a support shaft 19, and can be tilted forward when removing the dust collection bag 16. A lid 20 closes the front opening of the dust collection chamber 15, which is rotatably attached to the lower body member 2b by a support shaft 21, and integrally includes a handle 22 and a connection 23 to an extension hose. The closed state of the lid body 20 is maintained by a buckle 24. Reference numeral 25 designates an inner lid for holding a gasket 26 that maintains airtightness between the front opening edge of the dust collection chamber 15 and the lid 20, and a gasket 27 that maintains airtightness between the connecting portion 23 and the mouth core 17. Reference numeral 28 indicates an alarm tube attached to the inner cover 25, and one open end thereof is attached to the inner cover 25 and is a cylindrical tube with a funnel-shaped lip 29a that is in close contact with the mouth core 17 of the dust collection bag 16. It is press-fitted into the packing 29, and the other end facing the space between the lid body 20 and the inner lid 25 is closed, and the peripheral wall located in the same space has a hole in which the reed piece 32 faces. 34 are formed.

In the above configuration, if the dust collection bag 16 is currently attached, when the lid body 20 is closed, the lip 29a of the gasket 29 will come into contact with the mouth core 17 as shown in FIG. Air does not flow inside the pipe 28 and no alarm sounds. However, if the dust bag 16 is not attached, the gasket 29 is opened, so when a switch (not shown) is turned on and the electric blower 3 is rotated, air from the hole 34 flows into the alarm pipe 28. At this time, the reed piece 32 is vibrated by the airflow and issues an alarm. As a result, the dust collection bag 16
This allows you to instantly know that the device is not attached.

As described above, according to the present invention, an alarm means can be installed in a small space, and the vacuum cleaner can be made smaller, the number of parts can be reduced, the number of assembly steps can be reduced, and costs can be reduced. It is possible.

Furthermore, since the sounding section is placed inside the lid and protected from dust, reliable alarm operation can be obtained when necessary. In addition, the lid acts as a kind of resonance box, making the alarm even more reliable.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a vacuum cleaner showing an embodiment of the present invention, Figs. The figures show the state in which they are not installed. 1...Vacuum cleaner body, 3...Electric blower, 15...
...dust collection chamber, 16...dust collection bag, 17...mouth core, 20
... Lid body, 25 ... Inner lid, 28 ... Alarm pipe, 32
...Reed piece.

Claims (1)

[Claims] 1. A vacuum cleaner body with a built-in electric blower and a dust collection chamber formed on its suction side, and a lid body that airtightly closes the opening of the dust collection chamber through packing,
A dust collection bag is installed in the dust collection chamber so as to be able to come in and out of the dust collection chamber, and has a mouth core supported by a holder located at the opening of the dust collection chamber. The alarm means is equipped with a cylindrical member having a substantially funnel-shaped lip that is attached to an inner lid provided on the back side of the lid body and closed by the mouth core. It consists of a packing and an alarm tube whose one open end is press-fitted into the cylindrical packing from inside the lid, and a reed piece is exposed in a part of the alarm tube located in the space between the lid and the inner lid. A vacuum cleaner with a hole.