JPS6056485B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner equipped with a self-winding cord reel.

Conventionally, there are vacuum cleaners in which a cord reel device and a dust removal mechanism are connected by some means, so that the dust removal mechanism can be operated in conjunction with the cord reel device and the dust removal mechanism to remove dust from the filter when the cord is pulled out and stored.

However, in the past, the cord reel and the Zenmai that provide the return force to the cord reel were almost integrated on the same axis, so the rotation angle of the cord reel was equal to the winding angle of the Zenmai, Therefore, the required rotation angle cannot be obtained unless the total length of the entire dance is extremely large. However, since there is actually a limit to increasing the total winding length, the winding diameter of the cord reel is increased in order to minimize the rotation angle of the cord reel. Therefore, the outer diameter of the main body case tends to increase, which is not desirable for a vacuum cleaner. The present invention has been made in view of the above points, and an object of the present invention is to provide a vacuum cleaner that can be installed anywhere within the main body case, thereby making it possible to downsize the vacuum cleaner. .

An embodiment of the present invention will be described based on the drawings.

First, reference numeral 1 denotes a main body case, and the main body case 1 is formed with a full blower chamber 2, an electric blower chamber 3, and a cord reel chamber 4 in this order from the front. A dust collection case 6 is detachably attached to the front part of the main body case 1 with a filter unit 5 interposed therebetween. A connection port 7 into which a connection hose (not shown) is inserted is formed at the front of the dust collection case 6. Further, the filter unit 5 includes a filter case 9 in which a primary filter 8 is provided.
It consists of a secondary filter 11 integrated with a packing 10 fitted around the periphery of the filter case 9, and a partition wall 13 which is held by the packing 10 and also holds a dust removal mechanism 12. This partition wall 13 has a through hole 1
4 is formed. Further, a plate member 16 having a shaft portion 15 whose diameter can be reduced is fixed to the secondary filter 11, and a crank 18 fixed to a dust removal shaft 17 is rotatably fitted to the shaft portion 15 of the plate member 16. There is. The dust removal shaft 17 is rotatably held by the partition wall 13, and a clutch portion 19 is provided at the other end of the dust removal shaft 17 to be coupled to a full-length shaft, which will be described later. Next, a support wall 20 provided at the front of the main body case 1 has a through hole 21 formed therein, and this support wall 20 and a support wall 2 forming the cord reel chamber 4 are connected to each other.
An electric blower 25 is attached with support rubbers 23 and 24 interposed between the two.

The electric blower chamber 3 communicates with an exhaust hole 27 formed in the rear plate 26. Further, a cord reel shaft 28 is fixed in the cord reel chamber 4, and a cord reel 30 for winding and holding a cord 29 is rotatably attached to the cord reel shaft 28.

The cord winding portion 31 of this cord reel 30 is formed to have an extremely small diameter. Further, a gear 32 is formed at one end of the cord reel 30, and a brake ring 33 is formed at the other end. A brake device 34 is joined to the inner periphery of this brake ring 33. Note that 35 is a cord outlet. Further, an interlocking mechanism 36 is provided below the main body case 1.

This interlocking mechanism 36 includes an interlocking shaft 39 held by bearings 37 and 38. A gear 40 that meshes with the gear 32 is formed at one end of the interlocking shaft 39, and a gear 41 is formed at the other end. There is. This gear 41 is rotatably held in the full swing chamber 2 and forms a full swing shaft 42 that constitutes a full swing mechanism.
The gears 43 are meshed with each other. One end of a full-length 44 is fixed to the full-length shaft 42, and the other end of the full-length 44 is fixed to a case 45. Further, one end of the full-length shaft 42 is engaged with the clutch portion 19, and is set so that rotational force is not transmitted in the tightening direction, but rotational force is transmitted in the loosening direction. In addition, 46 is the clutch part 1
There is a spring to engage 9. In such a configuration, when the end of the cord 29 protruding from the main body case 1 is held and pulled, rotational force is applied to the cord reel 30.

Since the brake device 34 does not act in this direction of rotation, the cord reel 30 rotates, and the gears 32 and 40 rotate.
, the interlocking shaft 39, the gear 41, and the gear 43 in this order. At this time, the interlocking mechanism 3
6 is set to decelerate the rotation of the cord reel 30, so the rotation speed of the entire spindle 42 is extremely small compared to the rotation speed of the cord reel 30. Therefore, the winding angle is small. Therefore, the overall length of Zenbu 44 is short and its weight is also light. However, it requires the same amount of stored energy as conventional ones, so it is stronger. That is, the spring constant is set to be large, and the initial tension is also set to be large in order to prevent a large difference between the return force at the beginning and the end. Furthermore, even if the full rotation shaft 42 rotates in the winding direction, the clutch portion 19 will not operate and the dust removal mechanism 12 will not operate at all.
When the cord 29 is stopped from being pulled out, the brake mechanism 34 is activated and the cord reel 30 is set at that position. ) Next, when finishing cleaning and reeling in the cord 29, release the brake mechanism 34 and reel the cord 29 in.
Set 0 to a free state.

As a result, contrary to the case described above, the energy stored in the full length 44 is released, the cord reel 30 rotates in the winding direction, and the cord 29 is automatically wound. At this time, the number of revolutions of the entire shaft 42 is at least as high as the number of revolutions of the cord reel 30, and therefore, even if the diameter of the cord winding portion 31 is small, a sufficient length of the cord 29 can be wound and held.
In addition, at this time, the clutch portion 19 is in a connected state, so the full swing shaft 42 and the dust removal shaft 17 rotate at the same speed, and the plate member 16 is swung by the crank 18 to remove dust from the secondary filter 11. Let's do it. As a result of the dust being removed when the cord 29 is wound in this way, the dust removal state is always constant and stable. As a result of the cord reel 30 and the full length 44 being provided separately in this way, an extremely favorable external shape can be obtained as a vacuum cleaner. That is, for a vacuum cleaner, an increase in its diameter is not desirable, and an increase in its overall length is not a big problem. In the present invention, as described above, the cord reel and the dust removal mechanism are connected within the main body case via the interlocking mechanism, and the Zenbu is attached to either axis of this interlocking system. The position can be set at any position within the main body case, thereby making it possible to reduce the diameter of the main body case, and also allowing the dust removal mechanism to be driven in response to the rotation of the cord reel. It is possible to maintain the balance of the entire motor system in an extremely good manner.

[Brief explanation of the drawing]

The drawing is a longitudinal side view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Main body case, 5... Filter unit (filter), 12... Dust removal mechanism, 29... Cord, 30
...cord reel, 36... interlocking mechanism, 44...
Full dance.

Claims (1)

[Claims] 1 A cord reel for winding and holding a cord and a filter dust removal mechanism are provided in the main body case, and the dust removal mechanism and the cord reel are connected by an interlocking mechanism including gears and an interlocking shaft, and the cord in the interlocking mechanism is A vacuum cleaner characterized in that a full-length actuator for biasing the cord reel in the winding direction is attached to one of the interlocking shafts at a position different from the reel axis.