JPH05204450A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To make it possible to easily evade an obstacle and to move as a cleaning person intends. CONSTITUTION:The vacuum cleaner is provided with a sensor part 6 of a sensor 3 provided on the side surface and front part of a main body 1 being projected from the main body 1. When this sensor par 6 is abutted on an obstacle and senses the obstacle, a rear wheel 7 faces the direction opposite to the obstacle or a front wheel 22 also faces the direction opposite to the obstacle direction at the same time when the rear wheel 7 faces the direction opposite to the obstacle direction.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner of this type is provided with a rotatable caster at the front and a non-reversible roller at the rear, or a rotatable caster for all vehicles. It was

The former has a hose mounting portion at a position closer to the front caster than the rear roller of the main body of the electric vacuum cleaner, and changes the direction of the main body of the electric vacuum cleaner by shaking the hose attached here. .. The latter is
Even if the electric vacuum cleaner body comes into contact with an obstacle, all wheels are equipped with rotatable casters, so that the user can travel without being caught by the obstacle.

[0004]

However, with such a structure, there are problems in obstacle avoidance and normal running.

That is, in the former case, when the vacuum cleaner body is drawn around the corner of the furniture by holding the hose, the corner of the vacuum cleaner body often hits this corner and does not move. They had to slacken and pull the hose in the other direction again to change the direction of the vacuum cleaner body to avoid obstacles.

The latter can run without being caught by obstacles, but when the floor surface is inclined, the electric vacuum cleaner body tries to go down this inclination against the intention of the person cleaning it. Of course, the operation becomes heavy, and in some cases, the vacuum cleaner body, which was descending vigorously, could damage furniture and the like. The present invention solves such a problem, and an object thereof is to obtain an electric vacuum cleaner which easily avoids obstacles and moves as intended by a person who is cleaning during normal use.

[0007]

In order to achieve the above object, an electric vacuum cleaner according to the present invention is provided with a sensor projecting from the main body on the front side of the main body, and a hole provided on the front side of the main body, and in the hole. The sensor has a sensing part that is held and protrudes from the main body, a pair of left and right sensor shafts that are fixed to the main body, one end is rotatably supported by the sensor shaft, and a spherical sensing part is provided at the tip. A sensor composed of a pair of connecting rods, and an axis provided at the other end of the connecting rod that is rotatably supported at a right angle to the pair of connecting rods through the sensor shafts having one end on the left and right, and between this shaft. A rotatably provided connecting rod, a rear wheel holding part sliding shaft fixed to the left and right inside the main body, and a C-shaped rotatably supported by this shaft that supports the rear wheel axle at one end The rear wheel holding part and one end of the left and right A shaft provided at the other end of a connecting rod rotatably supported via a rear wheel holding portion sliding shaft, a connecting rod rotatably provided between the left and right shafts, and the sensor having one end on the left and right. A shaft provided at the other end of the connecting rod that is rotatably supported at a right angle to the pair of connecting rods via the shaft, and a disk that is in contact with and fixed to the connecting rod that is rotatably provided between the shafts. , One end of which is rotated at right angles to the left and right rear wheel holding parts and a shaft provided at the other end of the connecting rod rotatably supported via the rear wheel holding part sliding shaft and the left and right shafts. Discs fixed by abutting against a connecting rod provided freely were provided, and a belt that did not intersect was provided between these discs.

Furthermore, a front wheel caster is provided so as to be rotatable in the same direction at the same time as the above-mentioned disc fixed and brought into contact with a rotatably provided connecting rod which is interlocked with the rotation of the left and right sensor shafts. It was

[0009]

With this structure, in the electric vacuum cleaner of the present invention, the sensor provided on the front side of the main body so as to project from the main body comes into contact with an obstacle such as furniture to detect the obstacle, so that the rear wheel is directed toward the obstacle. In the opposite direction, the vacuum cleaner body is turned to guide the vacuum cleaner body in the obstacle avoidance direction.

Needless to say, it is not necessary to slacken the hose once and pull the hose again in another direction to change the direction of the vacuum cleaner body, and even when the floor surface is inclined, the vacuum cleaner body keeps this Since it does not go down the slope, the operation does not become heavy.

Furthermore, the above-mentioned disc and the front wheel casters, which are fixed by abutting against a rotatably provided connecting rod that is interlocked by the rotation of the left and right sensor shafts, are rotatably provided in the same direction at the same time. Therefore, when the sensor provided on the front side of the main body and protruding from the main body comes into contact with an obstacle to detect the obstacle, the rear wheels face in the direction opposite to the obstacle direction and at the same time the caster, which is the front wheel, also becomes an obstacle. Facing in the opposite direction, the direction of the electric vacuum cleaner body is changed more reliably and quickly, and obstacles of the main body are avoided.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An electric vacuum cleaner according to an embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 6, reference numeral 1 denotes a main body of an electric vacuum cleaner, and a substantially rectangular hole 2 is provided in front of a side surface thereof, and a sensing portion 6 of a sensor 3 held in the hole 2 is provided so as to project from the hole 2 of the main body 1. ..

The sensor 3 comprises a sensor shaft 4 fixedly provided inside the main body 1 and a substantially cylindrical connecting rod 5 having a substantially spherical sensing portion 6 at its tip. On the other hand, the main body 1
A substantially oval hole 12 is provided at the rear of the side surface of the. A rear wheel holding part sliding shaft 9 is fixedly provided inside the main body 1, and the rear wheel holding part sliding shaft 9 has a substantially U-shape and a substantially cylindrical part 10a horizontally at the end. The rear wheel 7 is rotatably provided and has a diameter slightly smaller than the inner diameter of the substantially cylindrical portion 10a of the rear wheel holding portion 10 and an axle 8a having a claw-shaped portion 8 at the end thereof. The claw-shaped portion 8 is provided so as to engage the substantially cylindrical portion 10a of the rear wheel holding portion 10 through the hole 12 from the outside. In the sensor shaft 4, a connecting rod 13 is provided at a right angle to the connecting rod 5, and a shaft portion 14 is provided at one end of each of the left and right connecting rods 13, and the connecting rod 15 is rotatably attached to the shaft portion 14.
Is provided between the two connecting rods 13. A connecting rod 16 is provided on the rear wheel holding portion sliding shaft 9 at a right angle to the rear wheel support portion 10,
A shaft 17 is provided at one end of the left and right connecting rods 16, and a connecting rod 18 is rotatably provided on the shaft 17 between the two connecting rods 16. Further, a disc 23 having a center in the rearward direction of the main body 1 from the connecting rod 15 is provided so as to be in contact with the connecting rod 15. Further, a disk 24 having a center in the front direction of the main body 1 with respect to the connecting rod 18 is fixedly provided so as to contact the connecting rod 15. The belt 25 is provided between these disks 23 and 24 so as not to intersect with each other.

Next, the operation of this structure will be described.
First, when there is an obstacle on the front left side of the main body while using the electric vacuum cleaner, the sensing unit 6 on the left side of the main body comes into contact with the obstacle, and the sensor 3 rotates rearward of the main body 1 around the sensor shaft 4 on the left side. Then, the disc 23 is rotated right by the connecting rod 15, and the disc 24 is also rotated right by the belt 25, and the left rear wheel holding portion 10 is centered on the left shaft portion 9 via the connecting rod 18 and the like. Rotate in the direction. In this way, the direction of the main body 1 is changed.

Further, the front wheel caster 22 is attached to the disk 23.
When the electric vacuum cleaner is used, if there is an obstacle on the left front side of the main body, the sensing unit 6 on the left side of the main body comes into contact with the obstacle, and the sensor 3 turns the main body around the sensor shaft 4 on the left side. 1 When rotated in the rearward direction, the front wheel casters 22 rotate clockwise together with the disk 23 by the connecting rod 15, and the belt 25
As a result, the disk 24 also rotates to the right, and the rear wheel holding portion 10 on the left side is centered on the shaft portion 9 on the left side via the connecting rod 18 or the like.
Rotate forward. In this way, the direction of the main body 1 is changed more reliably and quickly.

[0016]

As is apparent from the above description of the embodiments, according to the electric vacuum cleaner of the present invention, the sensor provided on the front side of the main body so as to project from the main body comes into contact with an obstacle such as furniture and the like. By sensing the, the rear wheel turns in the direction opposite to the obstacle direction, changes the direction of the vacuum cleaner body, and guides the vacuum cleaner body in the obstacle avoidance direction.

Of course, it is not necessary to slacken the hose once and pull the hose again in a different direction to change the direction of the vacuum cleaner body, and even when the floor surface is inclined, the vacuum cleaner body keeps this Since it does not go down the slope, the operation does not become heavy.

Further, the above-mentioned disc and the front wheel casters, which are fixed by abutting against a rotatably provided connecting rod which is interlocked by the rotation of the left and right sensor shafts, are rotatably provided in the same direction at the same time. Therefore, when the sensor provided on the front side of the main body and protruding from the main body comes into contact with an obstacle and senses the obstacle, the rear wheels face in the direction opposite to the obstacle direction and at the same time the caster, which is the front wheel, also becomes an obstacle. Facing in the opposite direction, the direction of the electric vacuum cleaner body is changed more reliably and quickly, and obstacles of the main body are avoided.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a vacuum cleaner body according to an embodiment of the present invention.

FIG. 2 is a plan view showing a concept of a configuration of a traveling system main mechanism of the electric vacuum cleaner.

FIG. 3 is a side view showing the concept of the configuration of the main part of the rear wheel of the electric vacuum cleaner.

FIG. 4 is a plan view showing a state when the electric vacuum cleaner body changes direction.

FIG. 5 is a plan view showing a concept of a configuration of a main traveling system mechanism of the electric vacuum cleaner.

FIG. 6 is a plan view showing a state when the electric vacuum cleaner body changes direction.

[Explanation of symbols]

 1 main body 2 hole 3 sensor 4 sensor shaft 5 connecting rod 6 sensing part 7 rear wheel 9 rear wheel holding part sliding shaft 10 rear wheel holding part 13 connecting rod 14 shaft 15 connecting rod 16 connecting rod 17 shaft 18 connecting rod 22 caster 23 Disc 24 Disc 25 Belt

Claims (2)

[Claims] 1. A hole provided in a front side of a main body, a sensing portion of a sensor which is held in the hole and protrudes from the main body, a pair of left and right sensor shafts fixedly provided to the main body, and a sensor shaft attached to the sensor shaft. A sensor, which is rotatably supported at one end and has a pair of connecting rods having a spherical sensing portion at its tip, and one end is rotatably supported at right angles to the pair of connecting rods via the left and right sensor shafts. The shaft provided at the other end of the connecting rod, the connecting rod rotatably provided between the shafts, the rear wheel holding part sliding shaft fixed to the left and right inside the main body, and the shaft A rear wheel holding portion that is movably supported and has one end that supports the rear wheel axle, and one end that is rotatable at right angles to the left and right rear wheel holding portions via the rear wheel holding portion sliding shaft. A shaft provided at the other end of the connecting rod supported on the shaft, and a connecting rod rotatably provided between the left and right shafts. A shaft provided at the other end of the connecting rod that is rotatably supported at a right angle to the pair of connecting rods through the sensor shafts having one end on the left and right, and a connecting rod rotatably provided between the shafts. A disk fixed in contact with the shaft, a shaft provided at the other end of a connecting rod that is rotatably supported at one end thereof at right angles to the rear wheel holding parts through the rear wheel holding part sliding shafts, and An electric vacuum cleaner provided with a disc fixed by abutting on a connecting rod rotatably provided between the shafts, and a belt which does not cross between the discs. 2. A shaft provided at the other end of a connecting rod that is rotatably supported at a right angle to a pair of connecting rods via the sensor shafts having left and right sides, and a shaft between the shafts. 2. The electric vacuum cleaner according to claim 1, further comprising: a disc fixed to and abutted on a connecting rod rotatably provided on the front wheel, and a front wheel caster rotatably in the same direction as the disc at the same time.