JPH0732748B2 - Floor nozzle for vacuum cleaner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor nozzle for an electric vacuum cleaner in which a nozzle body is composed of upper and lower body members.

2. Description of the Related Art In a conventional floor nozzle, an upper body member and a lower body member are combined to form a nozzle body, and a suction chamber and a suction passage extending from the center to the rear are formed inside the nozzle body. Further, it can be seen that an agitator is provided in the upper suction passage, and a motor and a control unit for driving the agitator are provided inside the rear of the nozzle body.

However, in the configuration of the floor nozzle described above, in order to set the suction passage, the cross-sectional area of the central portion of the lower body member is particularly small. There was a drawback that the warpage became large and it became difficult to combine it with the upper body member. II. The strength of the central part of the nozzle body, where the operating force was concentrated, was small, causing variations in performance due to deformation.

In the case where the suction chamber is provided with an agitator, it is necessary to connect a lead wire between the drive motor and the control unit.
In order to effectively utilize the limited internal space of the nozzle body, these motor and control unit are generally arranged on both rearward facing sides of the suction chamber, so that the suction passage is inevitably located between them. .

As a result, the lead wire passes through the suction passage, and it is necessary to protect it with the lead wire holder. However, this holder not only leads to an increase in ventilation resistance, but also has problems such as powder loss.

The present invention has solved such conventional problems,
In particular, in the case where the lower main body member is prevented from being deformed and an agitator driven by the motor is provided, lead wires are rationally provided between the motor and its control unit.

Means for Solving the Problems A first means of the present invention for achieving the above object is a suction chamber having a lower opening as a suction port, and a suction chamber which communicates with a part of the suction chamber and extends rearward. A nozzle body including a passage and an upper and lower body member joined together is provided, and a gate-shaped reinforcing frame is provided upward on an inlet side of the suction passage of the lower body member. .

Further, a second means of the present invention is that a suction chamber having a lower opening as a suction port, a suction passage communicating with a part of the suction chamber and extending rearward, and disposed on both sides of the suction passage. A room provided with an electric motor on one side and a control unit for this electric motor on the other side, and a nozzle body constituted by combining upper and lower body members,
An agitator driven by the electric motor is provided in the suction chamber, a gate-shaped reinforcing frame is provided upward at an inlet side of the suction passage of the lower body member, and the electric motor is provided above the reinforcing frame. And a groove for holding a lead wire connecting the control section and the control section.

Effect According to the first means of the present invention, the reinforcing frame reinforces the central portion of the lower main body member, which is particularly weak, and can prevent deformation during molding and during use. Further, according to the second means, the lead wire can be arranged when the upper and lower main bodies are joined, and since the reinforcing frame constitutes the inlet side of the suction passage, it does not interfere with ventilation. .

Example Hereinafter, an example will be described with reference to the accompanying drawings.

In the figure, a nozzle body 1 is obtained by connecting upper and lower body members 3 and 4 via a bumper 2, and a suction chamber 6 having a lower opening as a suction port 5 is formed inside the front thereof. There is.

The center of the suction port 6 extends to the rear of the nozzle body 1 and is connected to a suction passage 7 whose upper and lower walls are arcuate. Further, inside the nozzle body 1 located behind the suction port 6, chambers 8 and 9 partitioned by the suction passage 7 into the left and right are set, and some of the chambers 8 have a small motor for driving an agitator. 10 and the control unit 11 is installed in the other room 9, respectively. Vents 12 and 13 are vent holes for flowing cooling air into the rooms 8 and 9, respectively, and cover materials 14 and 15 for preventing dust from entering are covered.

Reference numeral 16 designates a substantially semi-cylindrical suction joint which is vertically connected to the suction passage 7, and a connection pipe 19 is rotatable via a ring 18 to a cylindrical connection port 17 projecting from a part of its peripheral wall. An extension pipe is removably connected to the suction side of the electric vacuum cleaner via a hose. Reference numeral 20 denotes a power cord of the motor 10.

21 is an agitator provided in the suction chamber 6 in parallel therewith,
Reference numeral 22 is a bearing of the agitator 21 arranged on both side walls of the suction chamber 6. The shaft 23 of the agitator 21 projects further to the side than the bearing 22, and the auxiliary agitator 24 is attached thereto. The auxiliary agitator 24 faces the opening 25 formed in the side wall of the nozzle body 1.

A belt 28 is stretched between a pulley 26 provided on one side of the agitator 21 and a pulley 27 provided on the shaft of the motor 10. That is, the agitators 21 and 24 are forcibly driven by the motor 10.

29 is a fixed brush attached to the rear of the suction port 6 in parallel, 30,3
Reference numeral 1 is a wheel provided in front of and behind the nozzle body 1 so that the suction port 6 is located at a constant distance from the surface to be cleaned.

By the way, a gate-shaped reinforcing frame 32 is provided in the center of the lower main body member 4, and when the upper main body member 3 is coupled, this is the suction passage 7.
It will be the entrance side of. The groove 33 is formed on the upper surface of the reinforcing frame 32.
A lead wire connecting the motor 10 and the control unit 11
34 is held. The reinforcing frame 32 may be integrally formed with the lower body member 4 as shown in FIG. 1, or may be integrally formed as a separate body as shown in FIG.

In the above structure, when the floor nozzle is used, the operating force is concentrated on the extension line of the connection pipe 19, that is, the central portion of the lower body member 4. However, since there is the reinforcing frame 32 in that portion, there is no deformation and no gap is formed between the portion and the upper main body member 3.

Further, the lead wire 34 connecting the motor 10 and the control unit 11 is the above-mentioned reinforcing frame.
It is protected by 32 grooves 33, and its wiring is
It can be easily done when assembling 4.

EFFECTS OF THE INVENTION As described above, according to the present invention, the warp deformation during molding and the deformation due to the operating force are not caused in the lower body member,
The nozzle body can be easily assembled by the upper and lower body members, and positioning is performed when the nozzle body is joined to the upper body member. Therefore, the upper and lower body members are reliably joined, and other than the suction air system. There is no air flow, and the dust absorption efficiency of the nozzle can be increased. Further, since the reinforcing frame is provided on the inlet side of the suction passage of the lower main body member, the above-mentioned effect becomes remarkable particularly on the inlet side of the suction passage. Also, in the case of so-called power nozzle specifications that have an agitator that uses the electric motor as a drive source, this reinforcing frame can be used for wiring the lead wire that connects the electric motor and the control unit, protecting the lead wire without using a holder. The wiring work itself is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a floor nozzle showing an embodiment of the present invention,
FIG. 2 is a top view of the nozzle body with the upper body member removed, FIG. 3 is a cross-sectional view, and FIG. 4 is a perspective view of essential parts showing another embodiment. 1 ... Nozzle body, 3 ... Upper body member, 4 ... Lower body member, 5 ... Suction port, 6 ... Suction chamber, 7 ... Suction passage, 8,
9 …… Room, 10 …… Motor, 11 …… Control part, 21 …… Agitator, 32 …… Reinforcement frame, 33 …… Groove, 34 …… Lead wire.

Claims (2)

[Claims] 1. A suction chamber having a lower opening as a suction port, and a suction passage communicating with a part of the suction chamber and extending rearward.
A floor for an electric vacuum cleaner, comprising: a nozzle body configured by combining an upper body member and a lower body member, and a reinforcing frame having a gate shape provided upward toward an inlet side of the suction passage of the lower body member. nozzle. 2. A suction chamber having a lower opening as a suction port, a suction passage communicating with a part of the suction chamber and extending rearward, and arranged on both sides of the suction passage. On the other hand, a room provided with a control unit of this electric motor, a nozzle main body formed by combining upper and lower main body members, and an agitator driven by the electric motor in the suction chamber are provided. For a vacuum cleaner in which a gate-shaped reinforcing frame is provided upward on the entrance side of the passage, and a groove for holding a lead wire connecting the electric motor and the control unit is formed in an upper portion of the reinforcing frame. Floor nozzle.