JPS6130600Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention includes a main body in which a fan motor is built-in, and a lid body having a suction passage extending from a hose insertion port to the suction side of the fan motor, which is removably connected to the main body. The present invention relates to a vacuum cleaner in which a dust collection case is removably supported by the main body and the lid, and a filter unit is installed in the suction passage of the lid, located above the dust collection case.

BACKGROUND ART An example of a conventional vacuum cleaner of this type is the invention of Japanese Patent Application No. 53-99718, which was previously filed by the inventors of the present invention.

This vacuum cleaner includes a vacuum cleaner body with a built-in fan motor, and a lid that is removably connected to the vacuum cleaner body and has a suction passage from a hose insertion port to the suction side of the fan motor. a filter unit interposed in the suction passage and attached to the lid, and a dust collection case supported between the lid and the vacuum cleaner body and located below the filter unit. It was equipped with the following.

Problems that the invention aims to solve However, in conventional vacuum cleaners of this type, it is difficult to attach and detach the filter part, and it is especially difficult to maintain and inspect the main filter, which is located deep in the suction passage. In some cases, there was a significant decrease.

The present invention eliminates these conventional drawbacks, and specifically aims to make maintenance and inspection of the main filter easier and to maintain its functionality well.

Means for solving the problems In order to solve the above conventional problems, the present invention
A vacuum cleaner body with a built-in fan motor, connected to the vacuum cleaner body so as to be rotatable at the rear of the vacuum cleaner body, and connected to the vacuum cleaner body so as to be rotatable at the rear thereof, and connected to the suction side of the fan motor from a hose insertion port formed in the front. It comprises a lid body having a suction passage, a filter unit interposed in the middle of the suction passage, and a dust collection case supported between the lid body and the vacuum cleaner body and located below the filter unit, The above filter unit is constructed by attaching a pre-filter and a dust removal mechanism to a filter case, and installing a main filter removably over the upper opening of the filter case.Furthermore, a buckle and a locking claw are installed on the upper and lower sides of the filter case. Along with forming;
A hook piece is provided on the lid body corresponding to the buckle and the locking claw, and the filter unit is removably attached to the lid body by engaging the buckle and the locking claw with each hook piece, Further, the lid body is formed with a rib that brings the main filter into pressure contact with the upper opening end of the filter case.

Effects According to the present invention, the filter unit can be easily removed by simply operating the buckle, and since the main filter is simply placed over the upper opening of the filter case, it can be further disassembled as an individual component. can. Therefore, maintenance and inspection of the main filter can be performed easily and accurately.

Furthermore, even if the main filter is simply placed over the upper opening of the filter case, it will be pressed against the filter case by the ribs when assembled into the lid.
Thereby, a predetermined air passage can be secured and leakage of dust can be prevented.

Example Examples thereof will be described below with reference to the accompanying drawings.

In the figure, fan motor 1, cord reel 2
The rear end of a lid 4 is pivotally supported at the rear end of a vacuum cleaner main body 3 which has a built-in device. The lid body 4, which is provided so as to be vertically movable with respect to the main body 3, has a hose insertion port 5 in its front part, and the inside of the lid body 4 extends from this hose insertion port 5 to the suction side of the fan motor 1. A suction passage is formed.

A filter unit 6 is installed in the middle of the suction passage, and includes a pre-filter 7 and a main filter 8 located downstream of the pre-filter 7.

Further, to describe the structure of the filter unit 6 in detail, 9 is a cylindrical filter case in which an intake port 10 facing the hose insertion port 5 is formed in a tangential direction in a part of the lower part of the peripheral wall. A hook-shaped locking pawl 12 is formed on the opposite side of the upper opening from the intake port 10, and an inwardly bent piece 13 is formed on the lower opening edge. 14 is a buckle attached to the intake port 10, and 15 is a locking protrusion thereof. The filter case 9 has a locking pawl 12 on a hook 16 formed on the top of the lid 4, and a locking protrusion 15 of the buckle 14 on a hook 17 provided near the hose insertion port 5. This allows it to be coupled to the lid 4.

The prefilter 7 has a cylindrical shape and has a peripheral wall other than the ventilation opening 18 corresponding to the intake opening 10.
For example, a filtering surface 19 is provided by providing a net material or the like. Further, the lower opening edge of the pre-filter 7 has a double wall all around or partially, and is fixed concentrically to the filter case 9 by press-fitting the folded piece 13 between the double walls. be. 20 is a space on the exhaust side of the pre-filter 7 set between the pre-filter 7 and the peripheral wall of the filter case 9; 22 and 23 are recesses and protrusions for preventing the pre-filter 7 from rotating relative to the filter case 9; It is partially formed on the bending piece 13 and the prefilter 7. (See Figures 3 and 4).

A bearing tube 24 is located at the center of the upper opening of the prefilter 7 and is integrated with the prefilter 7 via a plurality of arms 25 .

On the other hand, the main filter 8 is formed into a circular wave shape, and is airtightly fitted into the upper stepped portion 11 of the filter case 9 via packings 26 provided around the outer periphery. Normally, the rib 27 formed on the lid body 4 is pressed against the stepped portion 11, so that the lid body 4 is in a solid state with respect to the filter case 9. 28 passes through the boss portion 29 of the main filter 8 and is connected to the bearing sleeve 2.
4 is a hollow shaft rotatably supported; 30 is a groove formed in the axial direction of the inner peripheral surface; 31 is a gasket for sealing the passage of the hollow shaft 28 to the boss portion 29; 32 is a seal for the hollow shaft 28; This is the dust removal body of the main filter 8 attached to the main filter 8, and is made of spring wire.

Reference numeral 33 denotes a protrusion 3 that fits into a groove 30 for another shaft inserted into the hollow shaft 28 so as to be vertically movable.
4 is fixed to the upper end so that it cannot rotate relative to the hollow shaft 28.
36 is a spring that is interposed in the gap between both shafts 28 and 33 and urges one shaft 33 upward; 37 is a funnel-shaped pressing body provided in the prefilter 7 so as to be rotatable and movable up and down; , are connected to the shaft 33 by a plurality of arms 38. 39 is a sealing material made of an elastic material provided on the outer periphery of the pressing body 37, and 40 is a dust removing body of the prefilter 7 attached to the pressing body 37. The pressing body 37 compresses dust by moving downward, and the dust removing body 40 scrapes off coarse dust adhering to the leakage surface of the prefilter 7 by rotating. Reference numeral 41 is fixed to the lower end of the hollow shaft 28, and is normally an inverted funnel-shaped rubber valve body that closes the lower opening 42 of the pressing body 37. A concave fine dust storage chamber 43 is formed in the chamber.

Reference numeral 44 indicates a single tongue piece that crosses the intake port 10 of the filter case 9, and is made of a deformable plate-like material such as synthetic resin. One end is fixed to the filter case 9, and the free end is free. It is set so that it enters the prefilter 7 through the vent 18 in this state.

The above is the configuration of the filter unit 6.

45 is pivotally supported by the lid body 4, and the cord reel 2
Dust removal gears 46 and 47 interlocked with the dust removal gear 45 are formed at opposing portions of the cap body 35, and are removably engaged with the clutch claws 4.
Reference numeral 8 denotes an external operation shaft supported by the lid body 4 so as to be able to move up and down, the lower end of which passes through the boss portion of the dust removal gear 45 and comes into contact with the upper surface of the cap body 35.

Reference numeral 49 denotes a support stand protruding forward from the lower part of the main body 3; 50 denotes a dust collection case detachably supported on the support stand 49; A gasket 52 attached to the edge is made to fit tightly. 53 is a handle of the dust collection case 50, 54, 55
Reference numeral 56 indicates wheels for transportation, and 56 indicates a handle provided on the lid 4.

A buckle mechanism (not shown) is provided between the lid 4 and the main body 3 to maintain the downwardly rotating state of the lid 4, that is, the state of connection to the main body 3.

In the above configuration, the prefilter 7 is
When the dust-containing air that has flowed into the filter passes through the filter surface 19, coarse dust is filtered out and reaches the space, and then fine dust is filtered out by the main filter 8. Then, only the purified air is sucked into the fan motor 1 through the suction passage of the lid 4 and is discharged from a predetermined portion.

The coarse dust filtered by the pre-filter 7 is collected in the dust collection case 50, and most of the fine dust filtered by the main filter 8 is attached to the filter surface, and a part is stored in the fine dust collection chamber 43. Fall.

The dust-containing air flowing into the prefilter 7 forms a swirling flow because the intake port 10 is formed in the tangential direction. Therefore, coarse fibrous dust that tends to adhere to the filtering surface 19 of the prefilter 7 is blown away by the swirling flow. The tongue piece 44 protruding into the prefilter 7 catches and captures this blown coarse dust, and the continuous swirling movement of the coarse dust creates a filtering surface 19.
(See Figure 5).

Next, dust removal from the pre- and main filters 7 and 8 is carried out by the dust removal gear 45 in conjunction with the cord reel 2.
All you have to do is rotate. That is, the rotation of the dust removal gear 45 is transmitted to the cap body 35 via the clutch pawls 46 and 47, and the shaft 33 to which the cap body 35 is fixed is connected to the hollow shaft 28 with the protrusion 34 of the cap body 35 facing the groove 30. are rotated together.

However, as the pressing body 37, which is connected to the shaft 33 through the arm 38, rotates, the dust removing body 40 scrapes off the coarse dust adhering to the filtration surface 19 of the prefilter 7, and also rotates together with the hollow shaft 28. , and one dust removing body 32 made of spring material repels the main filter 8 and knocks off fine dust. of course,
The fine dust from the main filter 8 is collected in the fine dust chamber 43 between the pressing body 37 and the valve body 41 as described above. The important point to note during the above dust removal operation is the pressing body 37.
At the same time, the valve body 41 is also rotating. According to the simultaneous rotation, there is no relative displacement of the valve body 41 with respect to the pressing body 37, and wear of the valve body 41 made of rubber or the like can be prevented, thereby ensuring valve closing.

Also, when the external operation shaft 48 is pressed, the dust collection case 5
It is possible to transfer fine dust to 0 and compress dust within the same case. That is, as the external operating shaft 48 descends, the shaft 33 moves downward through the cap body 35 and against the spring 36. Furthermore, at this time,
The protrusion 34 of the cap body 35 moves within the groove 30 and the hollow shaft 28 does not move downward.

When the pressing body 37 is displaced downward with the downward movement of the shaft 33, the opening 42 is separated from the valve body 41 and opened, as shown in FIG.
The fine dust in the fine dust storage chamber 43 is removed by the pressing body 37 and the valve body 41.
It moves smoothly into the dust collection case 50 from the opening 42 along the tapered surface. Further, through a series of operations, the pressing body 37 compresses the dust in the dust collection case 50, thereby substantially increasing the amount of dust collected.

Further, the tongue piece 18 is pressed against the intake port 1 by the pressing member 37.
Pushed to the 0 side. Here, the tongue piece 18 is the intake port 1
This is a form that blocks part of 0.

Dust remains in the intake port 10 when the cleaning operation is stopped. The tongue piece 18 also has the function of preventing this residual dust from entering above the pressing body 37.
More specifically, if a relatively large amount of dust enters above the pressing body 37, it will be sucked into the main filter 8 during operation of the vacuum cleaner, significantly reducing its filter function.

The tongue piece 18 solves this problem. Most of the dust remaining in the intake port 10 is fibrous and relatively large, so the tongue piece 18 is attached to the intake port 1.
It only needs to close a part of 0, not all of it.

When the external force of the external operating body 48 is removed, the spring 3
6, the pressing body 37 returns to its original position, and its opening 42 is closed by the valve body 41.

Note that dust is removed from the filtering surface 19 of the prefilter 7 by the sealing material 39 even when the pressing body 37 moves downward.

The dust can be easily disposed of by rotating the lid 4 upward and removing the dust collection case 50 as shown in FIG.

Further, the filter unit 6 operates the buckle 14 as shown in FIG.
It can be easily removed from the lid body 4 by separating from the lid body 6 and then releasing the locking claw 12 from the other hook piece 17.

In the filter unit 6, in particular, the main filter 8 is simply fitted into the filter case 9, so it can be easily disassembled, and fine dust that could not be removed in the previous dust removal operation can be directly removed manually.

The filter unit 6 can be attached to the lid body 4 by following the procedure reverse to the above.

Effects of the invention As described above, the present invention consists of a vacuum cleaner body with a built-in fan motor, a hose plug which is rotatably connected at the rear of the vacuum cleaner body so as to be connected to and separated from the vacuum cleaner body, and which is formed at the front of the vacuum cleaner body. A lid body having a suction passage extending from the mouth to the suction side of the fan motor, a filter unit interposed in the middle of the suction passage, and a filter unit supported between the lid body and the vacuum cleaner body and located below the filter unit. The filter unit is equipped with a dust collection case located at
A pre-filter and a dust removal mechanism are attached to a filter case, a main filter is removably covered in the upper opening of the filter case, and a buckle and a locking claw are formed on the upper and lower sides of the filter case. A hook piece is provided on the lid body corresponding to the buckle and the locking pawl, and the filter unit is detachably attached to the lid body by engaging the buckle and the locking nail with each hook piece, and The lid body has ribs that press the main filter into contact with the upper opening end of the filter case.
Both main filters can be inspected and maintained very easily, and the main filter in particular can be easily removed from the filter case, so fine dust can be reliably removed manually.

Therefore, the filter function of the main filter can be maintained well.

Also, since one side of the filter case is opened when the main filter is removed, it is easier to inspect the inside of the unit. Furthermore, when the filter unit is assembled into the lid, the main filter is tightly pressed against the upper opening of the filter case by the ribs formed from the lid, so that no air leakage occurs. As a result, a predetermined air passage is secured, the filter unit is prevented from overworking, the dust collection performance is improved, and failures due to dust leakage to the fan motor etc. can be prevented.

[Brief explanation of drawings]

Fig. 1 is a partially cut-out sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of a filter unit, Fig. 3 shows the attachment part of the prefilter to the filter case, and Fig. 4 A sectional view taken along line A-A in the figure, FIG. 4 is a bottom view of the filter unit,
FIG. 5 is a sectional view of the prefilter section, FIG. 6 is an explanatory view of the operation, FIG. 7 is a side view of the vacuum cleaner during dust removal, and FIG. 8 is a sectional view of the filter unit during attachment and detachment operation. 1...Fan motor, 3...Vacuum cleaner body, 4...
... Lid body, 5 ... Hose insertion port, 6 ... Filter unit, 7 ... Pre-filter, 8 ... Main filter, 9 ... Filter case, 12 ...
Locking claw, 14...buckle, 16, 17...hanging piece,
27...Rib.

Claims (1)

[Scope of utility model registration request] A vacuum cleaner body with a built-in fan motor, connected to the vacuum cleaner body so as to be rotatable at the rear of the vacuum cleaner body, and connected to the vacuum cleaner body so as to be rotatable at the rear thereof, and connected to the suction side of the fan motor from a hose insertion port formed in the front. The vacuum cleaner includes a lid body having a suction passage, a filter unit interposed in the middle of the suction passage, and a dust collection case supported between the lid body and the vacuum cleaner body and located below the filter unit. The above filter unit is constructed by attaching a pre-filter and a dust removal mechanism to a filter case, and detachably covering the main filter in the upper opening of the filter case, and also has a buckle and a locking claw on the upper and lower sides of the filter case. At the same time, a hook piece is provided on the lid body corresponding to the buckle and the locking pawl, and by engaging the buckle and the locking pawl with each hook piece, the filter unit can be attached and detached from the lid body. The vacuum cleaner is attached to the lid body and has a rib formed on the lid body to press the main filter into contact with the upper opening end of the filter case.