JPS6053615B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner in which dust is removed from a filter device using a mainspring device.

BACKGROUND OF THE INVENTION Conventional vacuum cleaners have been known to wind up a mainspring in conjunction with a cord reel, etc., and to release this force arbitrarily to drive a filter dust remover (for example, in Japanese Patent Application Laid-Open No. 1983-1980). 8786 hours gazette and Japanese Patent Application Publication No. 1987
-68344).

Problems to be Solved by the Invention However, in the conventional one, the mainsprings are combined,...
7A,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,, and . The present invention solves these conventional problems and aims to improve maintainability and ease of assembly. Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention provides the following:
In a device that removes dust from a filter device by rotating a dust removal drive body, the dust removal drive body is provided with a mainspring device that stores power from a drive source other than the dust removal drive body, and this mainspring device is provided with a case lid that can be rotated freely. A mainspring case and
It consists of a mainspring whose both ends are held by the mainspring case and a case lid, the mainspring case is detachably attached to the dust removal drive body, and the case lid is non-rotatably linked to the filter device. It is something.

Operation In the above configuration, the mainspring device only needs to be assembled for one dust removal drive, and the workability can be greatly improved.

Also, maintenance is very easy as only the mainspring device can be replaced. EXAMPLES Below, examples will be described with reference to the accompanying drawings.

In the figure, 1 is a vacuum cleaner body with a built-in fan motor 2 and cord reel 3, and 4 is a dust case detachably connected to the front side of the fan motor 2, that is, the suction side of the fan motor 2 via a buckle 5; A waste dust port 7 is formed which can be opened and closed by a lid 6, and a filter device 8 is removably inserted into the rear opening. The space between the waste dust port 7 of the dust case 4 and the filter device 8 is set into a coarse dust chamber 10 and a fine dust chamber 11 separated by a partition wall 9. Both the coarse dust chamber 10 and the fine dust chamber 11 are opened to the waste dust port 7.

The lid body 6 is obtained by combining a front plate 12 and a back plate 14 which has a backing 13 attached to the outer circumference that fits tightly to the mouth edge of the waste dust port 7, and the upper part of the back plate 14 is attached to the dust case 4 with a shaft 15. It is pivotally connected via.

16 is a spring that biases the lid 6 in the opening direction; 17 is a suction port; 18 is a buckle plate provided inside the lid 6 so as to be movable up and down; and a hook 19 protruding from the bottom of the lid 6. It engages with the lower protrusion 20 of the dust case 4 to maintain the closed state of the lid 6.

21 is a buckle plate 18 so that the hook portion 19 engages with the protrusion 20.
A spring 22 that biases the button upward is an operation button of the buckle plate 18, and is located in front of the handle 23 on the dust case 4.

Note that the operation part of the buckle 5 is located on the rear side of the handle 23. Next, the filter device 8 has a fine dust outlet 24 at the bottom.
a filter case 25 with an open front and rear sides, and a disk-shaped primary filter 26 that closes the front open part of the filter case 25. , a cylindrical wave-shaped secondary filter 27 located on the downstream side of the primary filter 26 and facing inside the filter case 25, and a frame 28 covered in the rear open part of the filter case 25. It is a constituent element. More specifically, the frame body 28 has a shaft support cylinder 29 that protrudes forward and backward at the center, a vent hole 30 on its outer circumference, and a backing 31 that comes into elastic contact with the inner circumferential surface of the dust case 4 is attached to the outermost circumference. This is what I did.

The rear opening edge of the filter case 25 is connected to the frame 28 via the packing 31. 32 is attached to the front open end of the filter case 25 and connects the primary filter 26 and the coarse dust chamber 10. Showing the backing that makes the air tight between.

The secondary fumbler 27 is constructed by attaching paper to a soft filter aggregate in a cylindrical wave shape, and is made of a rigid material and has a filter end plate 34 having a ventilation hole 33 on the rear side. be. This filter end plate 34 is connected to the secondary filter 2 via a backing 35 attached to the outer periphery.
7 and holds a soft secondary filter 27. 36 is a backing that tightens the gap between the filter end plate 34 and the frame 28; 37 is a dust remover for the secondary filter 27 provided close to the fine dust outlet 24 of the filter case 25; 38 is the frame 28; The shaft body 39 is located on the outer circumference of the rear surface of the
A small gear is rotatably supported through a small gear, and a ratchet gear, etc. is attached to the front part of the small gear. A ratchet wheel 40 and a clutch pawl 4 are formed at the rear.

Reference numeral 42 denotes a shaft 43 that is supported within the shaft support cylinder 29 of the frame body 28.
A large gear 44 has a vent port projecting forward from the center thereof, and has a tooth profile formed on the outer periphery to mesh with the tooth profile of the preceding small gear 38.

The shaft 43 of the large gear 42 and the filter end plate 34
A shaft 45 formed at the center of the shaft and supported within the shaft support cylinder 29
And the center boss part 46 of the primary filter 26 has a screw 47
When the large gear 42 rotates, the primary and secondary filters 26 and 27 also rotate at the same time.

Reference numeral 48 denotes a mainspring device attached to the front side of the large gear 42, which is composed of a mainspring case 49, a case lid 50, and a mainspring 51 housed within the mainspring case 49.

The flange portion 52 of the mainspring case 49 is rotatably supported by circular ribs 53 and pawls 54 integrally formed with the large gear 42, so that it does not separate from the large gear 42.

On the other hand, the case lid 50 has a central boss 55 that fits into the outer periphery of the shaft support cylinder 29 of the frame 28, and is in a relatively rotatable relationship with the mainspring case 49. 56 and 57 are shaft support cylinders 2
In order to prevent the case lid 50 from rotating relative to 9, the coaxial support tube 29 and the case lid 50 are respectively formed with a convex portion and a recess that fit together, and 58 is a plurality of protrusions formed on the outer periphery of the mainspring case 49. One of these is set on an inclined surface.

Reference numeral 59 indicates a locking pawl that is pivotally installed on the back side of the large gear 42, and the spiral case 49 is attached by the force of the elastic arm 60 that is integrated with the locking pawl.
It is in contact with the outer peripheral surface of.

When the large gear 42 rotates in one direction, the locking pawl 59 engages with the projection 58, and when the large gear 42 rotates in the opposite direction, it climbs over the projection 58 via the inclined surface. In the mainspring device 51, the inner end of the mainspring 51 is fixed to the boss 55 of the case lid 50, and the outer end is fixed to the mainspring case 49.
It is held in place with frictional force on the inner surface of the

Claw pieces 62 corresponding to the ratchet wheel 40 of the small gear 38 are operating levers 61, which are disposed on the rear and front sides of the frame 28 and connected by a connecting shaft 63.

64 is a spring that urges the claw piece 61 in the direction of engagement with the ratchet wheel 40, 65 is an automatic dust removal button that presses the operating lever 61, 66 is a spring for returning the same, and 67 is the small gear 38 mentioned above.
The output shaft 68 is a main body side clutch pawl that engages only when rotating in one direction with the clutch pawl 41 of the main body, and is interlocked with the cord reel 3.
It is attached to.

69 is a handle of the main body 1 of the vacuum cleaner, and 70 and 71 are wheels provided on the dust case 4 and the lower part of the main body 1, respectively.

In the above configuration, the dust-containing air flowing in from the suction port 17 first passes through the primary filter 26 as coarse dust, and then passes through the secondary filter 27 as fine dust. Only the purified air reaches the fan motor 2.

Then, the coarse dust is collected in the coarse dust chamber 10, and part of the fine dust is attached to the secondary filter 27, and the other part is collected in the fine dust chamber 10 through the fine dust outlet 24 of the filter case 25. Fall. Next, we will discuss the dust removal operation.

Now, when using the vacuum cleaner, connect the power cord to cord reel 3.
When the cord reel 3 is pulled out from the output shaft 68, the rotation of the cord reel 3 is
It is transmitted to the hand side clutch pawl 67 and the clutch pawl 41 via. This causes the small gear 38 and the large gear 42 to rotate. The rotation of the large gear 42 is first transmitted to the primary and secondary filters 26 and 27 that are integrated with the large gear 42, and the dust that adheres to the filtering surface due to the rotation of the primary filter 26 is transferred to the coarse dust in the coarse dust chamber 10. Scrubbed and dropped, again 2
The secondary filter 27 is vibrated by a dust remover 37 to shake off fine dust attached thereto.

Furthermore, the mainspring 51 of the mainspring device 4 is wound by the rotation of the large gear 42. That is, at this time, the locking pawl 59 provided on the large gear 42 engages with the protrusion 58, so that the mainspring case 49 rotates together with the large gear 42.
On the other hand, the case lid 50 is prevented from rotating relative to the frame body 28 by fitting the concave and convex portions 57 and 56, and thus the mainspring 5
1 winding is performed. Incidentally, during the above-mentioned dust removal operation associated with pulling out the power cord, the ratchet wheel 40 of the small gear 38 is in a non-coupled state with the pawl piece 61.

Conversely, when winding the power cord onto the cord reel 3, the engagement of the clutch pawl 67 on the main body side with the clutch pawl 61 is released, and the pawl piece 61 engages with the pawl wheel 40. Large gear 42 and small gear 38
Reversal of is prevented.

In this way, the mainspring 51 is wound up and stored power in response to the power cord being pulled out, but when the winding limit is reached, the outer end of the mainspring 51 and the inner surface of the mainspring case 49 meet. Only the mainspring case 49 rotates idly by overcoming the frictional force between the two.

In addition, when discarding coarse and fine dust accumulated in the dust case 4, separate the dust case 4 from the main body 1 of the vacuum cleaner,
Next, the automatic dust removal button 65 is pushed.

However, the pawl piece 61 engages the pawl wheel 40 via the operating lever 62.
From the point of separation, the power of mainspring 51 is
It is transmitted to the large gear 42 and then to the small gear 38 via the engagement pawl 59 that engages with the protrusion 58 of the mainspring case 49. When the large gear 42 rotates, 1
Next, dust removal is performed before the secondary filters 26 and 27 are discarded. Thereafter, the dust case 4 is carried to a suitable place, the lid 6 is opened, and the waste dust port 7 is turned downward, so that both coarse dust and fine dust can be thrown away at once.

Further, when automatic dust removal by the mainspring 51 is insufficient, the large gear 42 can be used to manually remove dust.

When the large gear 42 is rotated in one direction, the locking pawl 59 rides over the protrusion 58 of the mainspring case 49 via its slope, and is substantially separated from the mainspring case 49.

Therefore, after releasing the stored power, the mainspring 51 will not be rotated too much in the opposite direction, which will cause damage. Of course, the large gear 42 may be manually rotated in the direction in which the power is stored in the mainspring 51, or may be rotated in reverse.

By the way, the mainspring device 48 is a mainspring case 49.
, a case lid 50 and a mainspring 51 are made into a unit, and are detachably attached to the large gear 42 via its pawls 54.

Therefore, the mainspring device 48 only needs to be assembled on the large gear 42, and its assemblability is extremely good. In addition, in the event that the mainspring 51 is damaged, it is only necessary to replace the unit body of the case 49, case lid 50, and mainspring 51, so maintenance is easy and replacement costs are low.

In the above example, a cord reel was used as the winding drive source for the mainspring, but it is also possible to use a windmill that is operated by the rotational force of the fan motor itself or by the wind induced by the fan motor. It will be done. Furthermore, instead of large and small gears as a power transmission means, a friction wheel may be used, or a system linked by a belt may be employed. Effects of the Invention As described above, the present invention removes dust from a filter device by rotating a dust removal drive body, and the above dust removal drive body is provided with a mainspring device whose power is stored by a drive source other than the dust removal drive body. The mainspring device consists of a mainspring case having a rotatable case lid, and a mainspring whose both ends are held by the mainspring case and the case cover, and the mainspring case is detachably attached to a dust removal drive body. Furthermore, since the case lid is non-rotatably linked to the filter device, it is possible to reliably remove dust from the filter device using the power of the mainspring, and it is also possible to remove dust from the filter device using the power of the mainspring. Since it can be handled as a unit, it is easy to maintain and is very convenient when the mainspring breaks.

Further, since the mainspring device can be assembled with respect to the dust removing drive body, it is extremely easy to assemble the mainspring device.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway sectional view of a vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a sectional view of the filter device section, Fig. 3 is a perspective view thereof, and Fig. 4 is a shaft support cylinder in the frame body. FIG. 5 is a perspective view of the dust removal operating body (large gear) and mainspring device, FIG. 6 is a front view of the same, and FIG. 7 is a perspective view of the automatic dust removal operation section. 8...Filter device, 42...Dust removal drive body (large gear), 48...Spring device, 49
...Spring case, 50...Case lid, 51...Spring.

Claims (1)

[Claims] 1. In a device that removes dust from a filter device by rotating a dust removal drive, the dust removal drive is equipped with a mainspring device that stores power from a drive source other than the dust removal drive, and this mainspring device has a rotatable case lid. It consists of a mainspring case, and a mainspring whose both ends are held by the mainspring case and case lid.The mainspring case is detachably attached to the dust removal drive body, and the case lid is rotated with respect to the filter device. A vacuum cleaner characterized by being immovably linked.