JP2560798Y2 - Automatic 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 an automatic cleaner for sucking dust on a floor surface while freely traveling in a room, and more particularly to a means for feeding and winding a power cord.

[0002]

2. Description of the Related Art An outline of a conventional automatic cleaner is shown in FIG. 10. A main body 11 of an automatic cleaner is provided opposite to a floor surface for sucking dust, and collecting dust for storing the sucked dust. Pack 92 and suction motor 93 for generating suction pressure
, A main wheel 95 for traveling, and a traveling motor 96 (not shown) for driving the same.
, A power supply control unit 20 for feeding or winding the power supply cord 22 as the vehicle travels, and an infrared sensor for detecting the presence or absence of surrounding obstacles. The sensor unit 98 includes a suction unit 94, a moving unit 97, and a control unit 99 that controls the power supply code control unit 20 based on information from the sensor unit 98 and the like.

FIGS. 5 to 8 show the details of the power cord control section 20 of such an automatic vacuum cleaner.

The power supply code control section 20 roughly stores a power supply code 22, and carries out winding and unwinding.
A reel drive mechanism 40 for driving the reel mechanism 30, and a power cord drive mechanism 50 for feeding out the power cord 22 and controlling the winding speed. ing.

First, a reel mechanism 30 is rotatably supported on the main body 11 of the automatic cleaner by a shaft 31, has flanges 32 at both ends, and takes up and stores the power supply cord 22.
A gear 33 fixed coaxially with the reel 33;
The electric current supplied from the power supply code 22 is used for the main body 1 of the automatic vacuum cleaner.
And a slip ring (not shown) for supplying power to one power supply unit.

[0006] The reel drive mechanism 40 is, as shown in FIG.
A pulley 41 fixed to the shaft 31, a pulley 42 rotatably supported by a shaft 43, and a steel strip are formed by bending a steel strip. Shaft 42 of pulley 42
a, and a spring 44 fixed to a to form a conston spring. The reel drive mechanism 40 constantly urges the reel 33 in the direction of arrow I with a constant torque by the repulsive force of the spring 44.

The power cord driving mechanism 50 includes a shaft 51 fixed to the main body 11 of the automatic cleaner and a shaft 51 fixed to the shaft 51.
A base portion 52 is slidably mounted in the direction of arrow A in the figure, and a capstan 53 is rotatably supported by the base portion 52 at one end and a worm wheel 54 is fixed at the other end. Shaft 55 fixed to the base portion 52
A bracket 57 rotatably mounted on the shaft 56; a shaft 58 fixed on the bracket 57; and a capstan 59 rotatably mounted on the shaft 58.
And a spring 6 having one end fixed to the base portion 52 and the other end fixed to the bracket 57 for urging the bracket 57 in the direction of arrow B in the figure.
0, one end is fixed to the main body 11, and the other end is a bracket 57.
A motor 63 that is fixed to the base 52 and transmits rotation to the capstan 53 via the worm 62 and the worm wheel 54; A pin 64 protruding downward from the shaft portion 52, a rotatable shaft 67 rotatably supported by the main body 11, a groove 65 in which the pin 64 is engaged on the outer periphery, a rotary cam 67 provided with a gear 66 at one end, and a clutch. 68, and a motor 70 for transmitting rotation to the gear 34 and the gear 66 via the gear 69.

The capstans 53 and 59 are provided with springs 60.
The power supply cord 22 is pulled out and wound by rotating the power supply cord 22 by sandwiching the power supply cord 22 from both sides by the urging force.

The linkage 61 is made of a flexible wire or the like which can be freely bent.
Is provided. When the knob 61a is pressed, the other end 61c protrudes to rotate the bracket 57 around the axis 56 in the direction of arrow C, so that the capstan 53 and the power cord 22 are turned off.
Disengage.

The linkage 7 is operated in conjunction with the knob 61a.
1 is provided. The tip of this linkage 71 is
When the knob 61a is pushed, the clutch 68 is connected to the motor 70 and the gear 69.
It is structured to cut off the connection.

The conventional automatic cleaner having such a configuration starts running from a stop position near the outlet 80 as shown in FIG. 10, and when the power cord 22 is fed out in response to the running, the motor is operated. By rotating the motor 63 and the motor 70, the reel 33 is rotated in the direction of arrow D, and the capstans 53 and 59 are rotated in the direction of arrow E, so that the power supply cord 22 is fed.

Since the reel 33 is always urged in the winding direction by the reel driving mechanism 40, the power supply coil is
Although the arm 22 is always pulled in the direction of arrow H, it is sandwiched between the capstans 53 and 59, and the capstan 53 is connected to the motor 63 via the worm gears 54 and 62 and does not rotate. The capstan 53 is fixed at the extended position by friction between the power cord 22 and the power cord 22.

Further, the gear 66 and the rotary cam 67 are rotated by the motor 70, and the pin 64 reciprocates in the direction of arrow F along the groove 65. Reciprocate in the direction. For this reason, reel 3
The power supply cord 22 wound up in line with 3 is fed without collapsing.

When the main body 11 of the automatic vacuum cleaner returns to the original stop position, it travels while winding up the power cord 22. At this time, the motor 63 is rotated in the reverse direction, the capstans 53 and 59 are rotated in the direction of arrow G, and the power cord 22 is moved in the direction of arrow H to supply the reel 33.

The reel 33 rotates in the direction of arrow I to take up the power cord 22.

Further, as in the case of the feeding, the base 52 reciprocates in the direction of arrow F by the rotation of the rotary cam 67, so that the power supply cord 22 is aligned with the reel 33 and wound up.

When the power supply cord 22 is manually wound, the bracket 57 is rotated in the direction of arrow C by pushing the knob 61a and projecting the other end 61c of the linkage 61, thereby connecting the power supply cord 22 with the power supply cord 22. The capstans 53 and 59 are released from engagement. At the same time, the linkage 71 disconnects the clutch 68 to disconnect the motor 70 from the gear 69.

As a result, the reel 33 is rotated in the direction of arrow I by the urging force of the reel driving mechanism 40, and the power cord 2 is turned on.
Wind up 2. The rotation of the reel 33 rotates the rotary cam 67 via the gear 34 and the gear 66,
Is reciprocated so that the power supply cord 22 is aligned with the reel 33 and wound up.

When the power supply cord 22 is manually pulled out, the power supply cord 22 is pulled out while pressing the knob 61a against the urging force of the reel drive mechanism 40.

[0020]

However, in the automatic vacuum cleaner provided with the power cord control section 11 having such a configuration, the power cord 22 and the capstan 53 are in contact with each other and the capstan 53 is provided. Are worm gears 54 and 62
When the power cord 22 is manually fed out, the power cord 2 is not connected to the motor 63 through the frictional resistance between the capstan 53 and the power cord 22.
There is a problem that it is difficult to feed out No. 2. Further, as shown in FIG. 9, when the power supply cord 22 is wound around the reel 33, the friction between the flange 32 and the power supply cord 22, the reciprocating motion of the base 52 and the reel 33 There is also a problem that the power supply cord 22 is wound around the point of attachment J of the power supply cord 22 to the reel 33 due to a rotation interlocking error or the like, and the power supply cord 22 is not aligned with the reel 33 and is not wound up. there were.

[0021]

According to the present invention, there is provided a reel having flanges at both ends and having a substantially H-shaped cross section for winding and storing a power cord. Mo
A first capstan fixed to a shaft for transmitting the rotation of the motor and a second capstan opposed to the first capstan sandwich the power cord from both sides to automatically feed or wind the power cord. In the vacuum cleaner, a first capstan is rotatably disposed on the shaft, a first gear fixed to the rotation shaft of the first capstan, and a first gear fixed to the rotation shaft of the second capstan. , A second gear engaged with the first gear, and engagement release means for releasing the engagement relationship between the first and second gears.

Also, a power supply cord at the flange of the reel is provided.
A protrusion may be formed in the vicinity of the pad mounting position.

[0023]

According to the present invention, when the first gear and the second gear are engaged, the first capstan and the second capstan rotate in conjunction with each other to rotate the power cord. However, when winding is performed and the engagement relationship between the first and second gears is broken,
The first capstan rotates freely in conjunction with the movement of the power cord, and does not hinder the movement of the power cord.

Further, at the time of winding the power cord, the power cord hits a projection provided near the power cord attaching position on the flange portion of the reel and is forcibly wound obliquely. The code can be wound up in line with the reel.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment according to the present invention will be described with reference to FIGS.

The same components as those of the prior art are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 1 and 2, a gear 1 is fixed to one end of a shaft 55 rotatably mounted on the base portion 52. A capstan 53 is attached to the shaft 55 so as to be rotatable.

A capstan 59 and the gear 2 are coaxially fixed to a shaft 58 rotatably mounted on the bracket 57. The gear 1 and the gear 2 are engaged with each other.

Further, a projection 3 having a height h substantially equal to the diameter of the power supply cord 22 is formed inside the flange 32 of the reel 33. As shown in FIG. 4, the projection 3 is formed at a position tangentially away from the point J of attachment of the power cord 22 to the reel 33 by about twice the diameter of the power cord 22. I have.

Next, the operation of this embodiment will be described. As shown in FIG. 1, when the power cord 22 is extended, the power cord 22 is sandwiched between the capstan 53 and the capstan 59 by the biasing force of the spring 60, and the worm gear is attached to the capstan 59. The rotation is transmitted from the motor 63 via the gears 54 and 62, the shaft 55, the gear 1 and the gear 2, and rotates in the direction of the arrow E. In addition, the capstan 53 is
Is mounted rotatably with respect to
It rotates due to friction with the arm 22. Also, the reel 33 is rotated in the direction of arrow D by the motor 70 and the power supply code 22 is drawn out in the same manner as in the prior art. As described above, the power cord 22 is fed from the reel 33 as the main body 11 of the automatic cleaner runs.

When the power supply cord 22 is to be wound, the motor 63 is rotated in the reverse direction and the capstan 5 is wound in the same manner as in the prior art.
3. The power cord 22 is wound around the reel 33 by rotating the capstan 59 in the direction of arrow G.

Further, in this embodiment, the power supply is manually
When winding the knob 22, as shown in FIG.
1a, the bracket 57 is rotated in the direction of arrow C against the urging force of the spring 60, and the power cord 2 is turned on.
The capstan 59 is separated from the gear 2 and the engagement between the gear 1 and the gear 2 is also disconnected.

By pressing the knob 61a as in the prior art, the clutch 68 is disengaged and the reel drive mechanism 40 is released.
The rotation force causes the reel 33 and the rotary cam 67 to rotate.

The power supply cord 22 released from the pressure of the capstan 59 is releasably moved by the reciprocating motion of the base 52.
3 and wound up. Further, since the capstan 53 is rotatably attached to the shaft 55, the capstan 53 rotates in conjunction with the movement of the power cord 22 and does not hinder the winding of the power cord 22.

Further, since the power supply cord 22 wound on the reel 33 hits the projection 3 and is forcibly wound obliquely, an attachment point J of the power supply cord 22 to the reel 33 is provided.
To be wound up. Therefore, the power supply cord 22 can be aligned with the reel 33 and wound up.

In the above embodiment, the motor 33 for driving the reel 33 and the rotary cam 67 and the motor 63 for driving the capstans 53 and 59 are separately provided. The rotating cam 67 and the capstans 53 and 59 may be connected by gears, belts, etc., and driven by one motor.

In the above-described embodiment, a linkage made of a flexible wire is used for rotating the bracket 57 and connecting and disconnecting the clutch 68. However, the bracket 57 and the clutch 68 are used.
Each may be operated by a solenoid, and the solenoid may be controlled by an electronic circuit.

[0038]

As described above, according to the automatic cleaner of the present invention, a plurality of capstans for feeding out and winding the power cord are connected by gears, and the engagement relationship of the gears is determined. By making it possible to intermittently prevent the power cord from being unwound due to friction between the capstan and the power cord when manually winding the power cord.

Further, by providing a projection on the flange of the reel for winding and storing the power cord, the power cord can be aligned and wound on the reel.

[Brief description of the drawings]

FIG. 1 is a top perspective view of one embodiment according to the present invention.

FIG. 2 is a side perspective view of one embodiment according to the present invention.

FIG. 3 is a top perspective view of one embodiment according to the present invention.

FIG. 4 is a diagram showing a power cord winding state according to the present invention.

FIG. 5 is a top perspective view of the prior art.

FIG. 6 is a side perspective view of the prior art.

FIG. 7 is a top perspective view of the prior art.

FIG. 8 is a top perspective view of a conventional reel drive mechanism.

FIG. 9 is a diagram showing a power supply cord winding state according to the related art.

FIG. 10 is an overall perspective view of a conventional technique.

[Explanation of symbols]

 1, 2 Gear 3 Projection 20 Power Cord Control Unit 22 Power Cord 32 Flange 33 Reel 51 Shaft 52 Base 53, 59 Capstan 54 Worm Wheel 55, 56, 58 Shaft 57 Bracket 60 Spring 63 Motor 71 Linkage

Claims (2)

(57) [Scope of request for utility model registration] 1. A reel having flange portions at both ends and having a substantially H-shaped cross section, for winding and storing a power cord, and a first fixed to a shaft for transmitting rotation of a motor. And the opposing second capstan,
In an automatic cleaner in which the power supply cord is sandwiched from both sides and the power supply cord is fed or wound, the first capstan is rotatably disposed on the shaft, and the first capstan is provided. A first gear fixed to the rotating shaft of the second capstan, a second gear fixed to the rotating shaft of the second capstan and engaged with the first gear, and a first gear and a second gear. An automatic vacuum cleaner comprising: an engagement release means for releasing an engagement relationship. 2. The automatic cleaner according to claim 1, wherein said reel has a projection formed near said power cord mounting position of said flange portion.