JP3291663B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner,
In particular, the present invention relates to a vacuum cleaner having improved reliability in transmitting operation information from a remote control device to a main body.

[0002]

2. Description of the Related Art FIG. 4 is an external view showing a vacuum cleaner provided with an infrared remote control device (hereinafter referred to as an infrared remote controller), and FIG. 5 is a sectional view showing a hose hand portion provided with the infrared remote controller. In the figure, 1 is a vacuum cleaner main body, 2 is a bellows hose (hereinafter, referred to as a hose), 3 is a hose cover, 4 is a hose hand portion, which is attached to a tip of the hose 2 and has an infrared light emitting section 8 described later. A hand operation unit 9 and the like are provided. 4a is the upper case of the hose hand,
4b is a lower case, and 4c is a grip. Reference numeral 5 denotes a connection pipe, 6 denotes a floor brush, and 7 denotes an infrared light receiving unit. Reference numeral 8 denotes an infrared light emitting unit, which includes infrared light emitting elements 8a and 8b. Reference numeral 9 denotes a hand operation unit having operation buttons 9a. Reference numeral 10 denotes a control switch that is opened and closed by operating the operation button 9a. Reference numeral 11 denotes a control board, on which a control switch 10 and an infrared light emitting element 8b are mounted.
An infrared light emitting element 8a is mounted on the substrate 11b.
Reference numeral 12 denotes a connection wiring. Reference numeral 14 denotes a battery as a power supply. The infrared light emitting elements 8a and 8b of the upper case 4a
In the upper part, an infrared transmitting portion made of a material that transmits infrared light is provided.

FIG. 6 is a block diagram showing an electrical system of a hose hand portion and a main body. The portions denoted by the same reference numerals as those in FIGS. 4 and 5 indicate the same or corresponding portions.
Is an infrared transmitting device, that is, a device that outputs a signal for causing the light emitting elements 8a and 8b of the infrared light emitting unit 8 to emit light by performing arithmetic processing on input information such as strong, medium, and weak when the switch 10 is pressed. 23 is a blower motor. Reference numeral 25 denotes an arithmetic processing unit which performs arithmetic processing on a signal received by the infrared receiving device, that is, the infrared receiving unit 7, and
This is a device that outputs a control signal.

[0004] The conventional vacuum cleaner is configured as described above, and the operation information by operating the operation button 9a is as follows.
The light is transmitted by the light emission of the infrared light emitting element 8a and is received (received) by the infrared light receiving unit 7. The main body 1 drives the blower motor based on the received signal. Further, light is emitted from the infrared light emitting element 8b toward the ceiling, and the reflected light is received by the light receiving unit 7, thereby forming a double system.

[0005]

In the above-described conventional vacuum cleaner, if the upper part of the light emitting element 8a is covered with a hand during cleaning, operation information is not transmitted. At this time, the light emitted from the other light emitting element 8b may be reflected on the ceiling or the like and incident on the infrared light receiving unit 7. However, if a place such as the ceiling where there is no object that reflects infrared light is cleaned, the operation information may be lost. Is not reliably transmitted to the main body 1 and the reliability of transmission of operation information is low. In addition, since the light emitting elements 8a and 8b are arranged at two locations as shown in FIG. 5, there are problems that the wiring becomes long and that the assembling work is troublesome and the cost is increased.

The present invention has been made in order to solve such a problem. An infrared light emitting section is provided at the bottom of a hose hand section, and the directions of light emitted from two light emitting elements arranged back to back are mutually changed. An object of the present invention is to obtain a vacuum cleaner in which light is received without being blocked in all states in the opposite direction without being shielded, thereby improving the reliability of transmission of operation information.

[0007]

A vacuum cleaner according to the present invention is provided at a tip end of a hose communicated with a main body of the cleaner, and has a hose hand portion communicated with a connection pipe connected to a floor brush. comprising a light emitting element for transmitting the operation information provided in front and rear of the bottom of the hose grip portion, and a light receiving element for receiving a signal of the light-emitting element provided in the upper part of the main body of the vacuum cleaner to be communicated with the hose, before Assuming that the angle between the central axis of the connecting pipe side cylindrical portion of the hose hand portion and the central axis of the hose side cylindrical portion is θ, the light of the light-emitting element attached in front with respect to the central axis of the connecting pipe side cylindrical portion. the firing angle theta ₁ of the light as 0 ° through? °, in which the firing angle theta ₂ of the light with respect to the central axis of the connecting pipe side cylindrical light-emitting elements attached to the rear and a theta ° to 90 °.

[0008]

According to the present invention, the transmitting device is composed of two transmitting elements installed back to back on the bottom of the hose hand, and the signal emitting angle θ ₁ of the transmitting element mounted in front is provided.
There is set to 0 ° through? °, because the signal launch angle theta ₂ of the transmitter element attached to the rear is set to theta ° to 90 °, the signal from the light-emitting element in all states in cleaning the shield Reach the receiving device without being performed.

[0009]

FIG. 1 is an external view of a vacuum cleaner according to one embodiment of the present invention, FIG. 2 is a sectional view showing a hose hand portion of the vacuum cleaner shown in FIG. 1, and FIG. It is an explanatory view explaining how to attach a light emitting element. 1 to 3, the same reference numerals as in FIGS. 4 to 6 denote the same parts, 15 denotes an infrared light emitting portion, and 15 a denotes an infrared light emitting element housing portion, which is made of a material that transmits infrared light. Fifteen
b and 15c are infrared light emitting elements, and 15d and 15e are infrared light emitting element terminals. Note that the infrared light emitting section 15 is provided at the bottom of the hose hand section 4 and at a portion near the connection with the connection pipe 5. Here, the “bottom portion” is a portion that is on the lower side in a state where it is normally cleaned (the state of FIG. 1), and this portion is referred to as a bottom portion of the hose hand portion 4.

FIG. 3A illustrates the bending angle θ of the hose hand portion 4. Hose grip portion 4, the upper case 4a, the lower case 4b, consists grip 4c, the lower case 4b has a connection pipe side cylindrical portion and the hose-side cylindrical portion, and the connecting pipe side cylindrical portion central axis l ₁ the hose-side cylindrical portion central axis l ₂ crosses at an angle of theta. This angle θ will be referred to as a bending angle of the hose hand portion 4.
FIG. 3B is a side view showing the mounting angles of the infrared light emitting elements 15b and 15c, and FIG. 3C is a front view of FIG. Control board 11c is parallel to the bottom of the hose grip portion 4 case l ₁ 4
b is fixed to the lower surface of the connecting pipe side cylindrical portion. That is,
At the bottom of the hose hand part 4, it is fixed to a part near the connection part with the connection pipe 5. Infrared light emitting element 15b is fixed so as to form a theta ₁ angle for that terminal 15d is the control board 11c. The infrared light emitting device 15c is fixed at an angle of theta ₂ to the terminal 15e is a control board 11c. Thus, it attached to the front, that is, the direction of the light emitted from the infrared light emitting element 15b mounted closer to the connection pipe 5 is in a direction which forms the control board 11c, that is, the theta ₁ angle to l ₁ . The direction of the light emitted from the infrared light emitting element 15c mounted on the rear as well is a direction forming an angle of theta ₂ with respect to l _1.

[0011] θ ₁ is set to 0 ° ~θ °. This is set to 0 ° to θ ° because the structure cannot be set to 0 ° or less, and when set to θ ° or more, the role sharing with the light emitting element 15c becomes unclear. Further, theta ₂ is set to θ ° ~90 °. This is because when the angle is set to θ ° or less, the infrared ray does not reach the main body 1 due to the hose connection portion, and when the angle is set to 90 ° or more, the role sharing with the light emitting element 15b becomes unclear. And Further, as shown in (a) of FIG. 1 and FIG. 3, when the cleaning is that move the floor brush 6 back and forth in a state where the center axis l ₂ becomes horizontal (parallel to the floor), the operation Since the power is the lightest, the user often performs cleaning in a state close to the above. Accordingly, taking this state into account, θ ₁ and θ ₂ are determined by changing the bending angle θ of the hose hand portion 4.
With the above setting, the light from the infrared light emitting unit 15 is surely prevented from being blocked by the main body 1.
Is transmitted to the infrared light receiving section 7 of the optical disc.

During cleaning in the state shown in FIG. 1, light from the infrared light emitting element 15c is received by the infrared light receiving section 7. When the floor brush 6 is moved in a direction approaching the main body 1 by reversing the direction of the floor brush 6 and the connection pipe 5 with the main body 1 in the same position, the light from the light emitting element 15 b is received by the light receiving section 7. Further, when the floor brush 6 passes through the main body and the light emitting section 15 also passes through the main body 1, the light of the light emitting element 15c is received again.

In the above embodiment, the operation information is transmitted using infrared rays. However, the operation information may be transmitted using another medium, for example, radio waves.

[0014]

As described above, the present invention provides a hose end provided at the end of a hose connected to a cleaner body and connected to a connection pipe connected to a floor brush, and a bottom portion of the hose end. forward and a light emitting element for transmitting the operation information provided behind, provided in the main body upper portion of the cleaner to be communicated with the hose and a light receiving element for receiving a signal of the light emitting element, before Symbol hose grip part of the Assuming that the angle between the central axis of the connecting pipe side cylindrical portion and the central axis of the hose side cylindrical portion is θ, the light emission angle θ of the light of the light emitting element attached in front with respect to the central axis of the connecting pipe side cylindrical portion. ₁ is defined as 0 ° to θ °, and a light emission angle θ _{2 of the} light emitting element mounted on the rear side with respect to the center axis of the connection pipe side cylinder.
Is set to θ ° to 90 °, the signal from the light emitting element reaches the receiving device without being blocked in all the states during the cleaning. Therefore, the reliability of transmitting operation information from the transmitting device to the receiving device is improved.

[Brief description of the drawings]

FIG. 1 is an external view of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a hose hand portion of the vacuum cleaner of FIG.

FIG. 3 is an explanatory diagram for explaining a method of mounting a light emitting element in one embodiment of the present invention.

FIG. 4 is an external view showing a conventional vacuum cleaner.

FIG. 5 is a cross-sectional view showing a hose hand portion of a conventional vacuum cleaner.

FIG. 6 is a block diagram showing an electric system of a hose hand portion and a main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 4 Hose hand part 6 Floor brush 7 Infrared light receiving part 9 Hand operation part 15 Infrared light emitting part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-172433 (JP, A) JP-A-1-277528 (JP, A) JP-A 5-253157 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A47L 9/28

Claims (1)

(57) [Claims] 1. A hose hand portion provided at a tip of a hose connected to a cleaner body and connected to a connection pipe connected to a floor brush, and front and rear portions of a bottom portion of the hose hand portion.
A light emitting element for transmitting the operation information provided towards, provided in the main body upper portion of the cleaner to be communicated with the hose and a light receiving element for receiving a signal of the light emitting element, connection pipe-side cylindrical of the hose grip part Center axis and hoe
When the angle of the cylindrical portion with respect to the central axis is θ,
The connection pipe side cylinder of light of the light emitting element attached to the
The firing angle theta ₁ of the light as 0 ° through? ° with respect to the central axis of,
The connection pipe side circle of the light emitting element mounted on the rear side
The emission angle θ ₂ of light with respect to the central axis of the cylinder is θ ° to 90 °
An electric vacuum cleaner characterized by: