JPH04166117A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a floor surface or a furniture from being marred by provid ing a protrusion on a rotating pipe, pivotally and rotatably attaching a movable member for preventing the rotation of the rotating pipe through a slot to a case and providing an energizing means to energize the movable member to engage with the protrusion. CONSTITUTION:In cleaning, a suction means 6 is initially pressed by a foot or the like so that it does not rotate and a main body 1 of a cleaner is rotated rearward to rotate a rotating pipe 9. While a movable member 13 engages with a protrusion 11 of the rotating pipe 9, it moves leftward for the part corresponding to a slot 14 against the energizing force of a spring 19. Further, when the rotating pipe 9 is rotated, an engaging part 17 of the movable member 13 is pressed down by the protrusion 11, and the engaging part 17 is disengaged from the protrusion 11. At this time, the movable member 13 moves rightward because of the energizing force of the spring 19 and a left side end edge of the slot 14 is liable to collide with a pin 16. Since an elastic member 21 is provided between a rib 20 and the movable member 13, the end edge of the slot 14 does not collide with the pin 16 nor impact noise generated.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a so-called upright vacuum cleaner, and particularly to a locking mechanism that prevents rotation of a vacuum cleaner body and a suction tool. Regarding 7 improvements.

(b) Conventional technology Conventionally, this type of upright vacuum cleaner has been designed to stand upright when not in use.
Generally, a locking mechanism is provided between the case that constitutes the suction device and the rotary tube rotatably supported by the case, which is engaged and released by a lever operated by the user from the outside with his or her foot. Met.

However, in the conventional configuration, since the lever protrudes to the outside, there is a risk that the lever may come into contact with a floor surface, furniture, etc., and damage the floor surface, furniture, etc. during movement.

(c) Problems to be Solved by the Invention The present invention was made in view of the above drawbacks, and an object thereof is to provide a vacuum cleaner that does not damage floors, furniture, etc.

(d) Means for Solving the Problems The present invention includes a vacuum cleaner body with a built-in electric blower and a suction tool attached to the lower part of the vacuum cleaner body, and the suction tool includes a case and a case that is rotatable. and a rotary tube supported by the vacuum cleaner body at the free end thereof, and a protrusion is formed on the rotary tube, and the case has a protrusion that engages with the protrusion of the rotary tube to prevent rotation of the rotary tube relative to the case. The present invention is characterized in that a movable piece to be blocked is rotatably supported via a long hole, and a biasing means is provided for biasing the movable piece in a direction to engage the protrusion.

(E) Effect According to the above configuration, when the vacuum cleaner is not in use and the vacuum cleaner body is placed in a substantially upright state, the movable tube engages with the protrusion of the rotation tube, preventing rotation of the rotation tube. Hold the vacuum cleaner body in an approximately upright position.

To release the vacuum cleaner from the upright position, hold the case with your foot, etc., and rotate the vacuum cleaner body to rotate the rotation tube.The movable piece will be locked to the protrusion of the rotation tube. When the rotary tube is moved by the elongated hole against the biasing force of the biasing means and the rotary tube is further rotated, the protrusion of the rotary tube pushes down the movable piece and the engagement between the protrusion of the rotary tube and the movable piece is interrupted. It comes off. In this state, the rotary tube can be freely rotated.

(f) Examples An embodiment of the present invention will be described in detail below based on the drawings.

■ is a vacuum cleaner body with a built-in electric blower (not shown), which guides dust sucked from a suction tool 6 (described later) to a dust collection chamber (not shown) via a telescopic pipe 2 provided on the side of the main body 1, and stores it in the dust collection chamber. It looks like this. The lower end of the telescopic pipe 2 is detachably attached to the main body 1, and when cleaning corners of a room or gaps between furniture, the lower end of the telescopic pipe 2 is removed from the main body 1 and an attachment (not shown) is attached to the telescopic pipe 2. It is designed to be installed and cleaned.

Reference numeral 3 denotes a support pipe that is supported at the rear of the main body 1 so as to be able to move up and down, and has a handle 4 formed at its upper part. Reference numeral 5 denotes a handle portion formed on the support portion of the support vibrator 3.

Reference numeral 6 denotes a suction tool attached to the lower part of the vacuum cleaner main body 1, which is composed of an upper case 7, a lower case 8, and a rotating tube 9 rotatably supported between both cases 7 and 8. Rotating tube 9
A connecting pipe 10 connected to the lower part of the main body 1 is integrally formed in the housing. The rotation tube 9 is prevented from rotating in the forward and rear directions by bringing its rotation rib into contact with rotation ribs (both not shown) formed on the upper case 7 and the lower case 8. Therefore, when the rotating pipe 9 rotates forward, the connecting pipe 1
0 is slightly tilted forward, the rotation rib of the rotation tube 9 comes into contact with the rotation rib of the lower case 8, and the rotation tube 9 is prevented from rotating forward.

Reference numeral 11 denotes a substantially triangular projection formed on the side surface of the rotary tube 9, which engages with a locking portion 17 formed on a movable piece 13, which will be described later. 12 is the protrusion 11 of the rotating tube 9
The cylindrical rib formed on the side surface is in contact with a guide part 18 formed on the movable piece 13 (described later), and the guide part 18
It is designed to come into contact with the

Reference numeral 13 denotes a metal movable piece that has a long hole 14 bored at one end and is rotatably and slidably supported by a metal bottle 16 attached to the rib 15 of the lower case 8, and is used to bend the roadside. an engaging portion 17 that removably engages with the protrusion 11 of the rotating tube 9;
and a guide portion 18 that comes into contact with the cylindrical rib 12 of the rotation tube 9.

Reference numeral 19 denotes a spring serving as an elastic body, which is formed in the lower case 8 or has one end fixed to the tab 20, and the other end is connected to the movable piece 1.
3 and urges the movable piece 13 in the direction in which the engaging portion 17 engages with the protrusion 11 of the rotation tube 9.

Reference numeral 21 denotes an elastic body disposed between the rib 20 and the movable piece 13, which includes a U-shaped plate spring 22 and the movable piece 13 of this plate spring.
One end of the plate spring 22 is firmly fixed to the rib 2o, and the movable piece 1 is moved by the bias of the spring 19.
3 and the pin 16 from colliding with each other.

24 is rotatably supported between the two cases 7.8,
A rotating brush mounted so as to face the outside from the suction port 25 formed in the lower case 8 is driven to rotate by a motor (not shown), scrapes up dust from the nap of the carpet, and transfers the dust to both cases 7. It is designed to be guided into the main body 1 via an air blow path formed in the air passage 8 and a rotation pipe 9.

Reference numeral 26 denotes a lid that covers an opening located above the rotating brush 24 formed in the upper case 7, 27 a bumper disposed around the suction tool 6, and 28 a pair disposed on both sides of the suction tool 6. The wheels are rotatably mounted on an axle 29 formed in the lower case 8.

Next, the operation will be explained.

FIG. 1 is a cross-sectional view of the suction tool 6 with the vacuum cleaner main body 1 standing upright. This state is maintained by a biasing force. The overall diagram of this state is shown in Figure 7.
Shown in the figure.

When cleaning, as shown in FIG. 8, it is necessary to increase the angle between the suction tool 6 and the cleaner body 1 so that the rotary tube 9 can freely rotate.

To shift to this state, first, the suction tool 6 is held down with a foot or the like so that it does not rotate, and the vacuum cleaner main body 1 is rotated rearward to rotate the rotation tube 9. Then, the movable piece 13 moves to the rotation tube 9.
While engaged with the protrusion 11, it moves to the left in FIG. 1 by the length of the elongated hole 14 against the biasing force of the spring 19. This state is shown in FIG.

When the rotating tube 9 is further rotated, the engaging portion 17 of the movable piece 13
is pushed down by the protrusion 11, and the engaging portion 17 and the protrusion 11
is disengaged. This state is shown in FIG. At this time, the movable piece 13 moves to the right in FIG.
However, since the elastic body 21 is arranged between the rib 20 and the movable piece 13, the edge of the elongated hole 14 and the pin 1
No impact sound is generated due to collision with 6.

When the rotating tube 9 is further rotated, the cylindrical rib 12 of the rotating tube 9
The guide portion 18 of the movable piece 13 comes into contact with the guide portion 18 of the movable piece 13. This state is the fourth
In the state shown in FIGS. 3 and 4, the rotary tube 9 is rotatable depending on the state of cleaning.

An overall view of this state is shown in FIG.

(G) Effects of the Invention As described above, according to the present invention, the operation part of the locking mechanism that prevents the rotation of the rotation tube of the suction tool is not exposed to the outside,
It is possible to prevent the floor surface, furniture, etc. from being damaged by the operation part during cleaning, and it is possible to improve usability during cleaning.

[Brief explanation of drawings]

The drawings all show one embodiment of the present invention, and FIGS. 1 to 4 are cross-sectional views of the suction device to explain its operation, FIG. 5 is a cutaway perspective view of essential parts, and FIG. 6 is an enlarged perspective view of the elastic body. 7 is a side view of the vacuum cleaner when not in use, and FIG. 8 is a side view of the vacuum cleaner when in use. 1. Vacuum cleaner body, 6... Suction tool, 7... Upper case, 8... Lower case, 9... Rotating pipe, 11...
...Protrusion, 13...Movable piece, 14...Long hole, 19
···spring.

Claims (1)

[Claims] (1) A vacuum cleaner body with a built-in electric blower, and a suction tool attached to the lower part of the vacuum cleaner main body, the suction tool being rotatably supported by a case, and having a free end attached to the suction tool. a rotary tube to which a vacuum cleaner body is attached; a protrusion is formed on the rotary tube; and a movable piece is provided on the case that engages with the protrusion of the rotary tube to prevent rotation of the rotary tube with respect to the case. 1. A vacuum cleaner, characterized in that a biasing means is rotatably supported through a long hole and biases the movable piece in a direction to engage the protrusion.