JPS58155825A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner, and more particularly to a soft synthetic resin bumper mounting structure in which a mounting portion is integrally molded.

With the conventional bumper installation method, the bumper could come off due to impact, etc. (
There was also a method of drilling a hole in the main body case and integrally molding a protrusion with an arrowhead-shaped tip on the molded bumper and press-fitting it, but press-fitting was uncertain. During use, the arrowhead may come off due to an impact, or when assembled, the arrowhead may be pulled from the opposite side and the arrowhead may be cut off, or the diameter of the root of the arrowhead may be smaller than the hole diameter, making it impossible to maintain airtightness within the main body. , there were problems such as decreased performance.

An object of the present invention is to provide a bumper device for a vacuum cleaner, which aims to ensure reliable installation, speed up the installation (improve workability), and reduce airtight leakage from the bumper hole.

In the present invention, in order to securely and airtightly attach the bumper to the main body, a tapered hole is formed on the mounting surface with a diameter larger on the bumper side and smaller on the inner wall side than the protrusion of the bumper, and the protrusion is made of a soft material integrated with the bumper. It is made of synthetic resin and is formed into a hollow and well-shaped shape. When the protrusion is press-fitted into the tapered hole, the tapered shape makes it easy to press-fit it in. When an external force is applied to the bumper to remove it, it will come out due to the wedge effect. Since it is press-fitted, it maintains sufficient airtightness.

Embodiments of the present invention will be described below based on the drawings.

1 is a vacuum cleaner body case, 2 is a motor, 3 is a cord reel, 4 is a dust collector, 5 is a dust removal device, and 6 is a front lid device.

1 The main body case is formed by combining two synthetic resin parts that are divided into left and right halves at approximately the center.

The side walls of the main body case 1 are provided with two tapered bumper holes 73 each having a smaller diameter on the inner wall side.
is provided with a projection 74 for attachment, and the projection 74 of the bumper 72 is press-fitted into the bumper hole 73 and fixed. The dimensions of the bumper hole 73 on the inner wall side of the bumper 72 are smaller than the diameter of the protrusion 74 on the bumper 72, and are wedge-shaped so that it cannot be pulled out once inserted, and on the outer wall side, the dimensions are made larger than the diameter of the protrusion 74 on the bumper 72, so that it can be inserted. It's made easy to do.

Also, the front cover 48 of the front cover device 6 has three similar bumper holes.
Further, the central bumper hole 73 is provided offset to one side as a mechanism to prevent the bumper 72 from being attached in the opposite direction, and the bumper 72 is similarly attached by press fitting. The interior includes a motor storage chamber 7, a cord winding device storage chamber 8, a collection/dust removal device storage chamber 9, and a parts storage chamber 10.
, an exhaust chamber 11, and other chambers. Further, a handle 12 for transportation is integrally provided. Furthermore, wheels 13
Various parts such as casters 14 and a bevel 16 for braking the cord winding device are attached. collection·
The dust removal device storage chamber 9 is provided with an outlet 17 that is open to the outside so that the dust removal device 4 can be attached and removed, and a front lid device 6 is attached to be able to be opened and closed so as to cover this outlet 17. There is. 4. The dust collection device is constructed as follows.

A fine filter 19 for dust 3 is integrally provided at the bottom of a box-shaped dust collection case 18 made of synthetic resin or the like. The fine filter 19 is divided into left and right parts at the center, and a striking plate 20 is fixed between each fine filter 19 by a fixing plate 21 and a screw 22. That is, fine filters 19 are arranged on both sides of the striking plate 20. The fine filter 19 is made by bending a filter material such as nonwoven fabric or cloth into a wave shape, and the striking plate 20 is arranged without protruding beyond the height H of the wave shape. This striking plate 20 is configured to operate by engaging with a cam body of a dust removal device 5 to be described later, and to apply a strong blow to a receiving body 23 formed integrally with the dust collecting case 18 to generate vibration. ing.

A flange 24 is provided at the open end of the dust collection case 18, and a guide boss 25 is provided facing the flange 24 and serves as an attachment guide for a paper bag filter, which will be described later.

Reference numeral 26 denotes an airtight backing for inserting the dust collection case 18 into the storage chamber 9 through the outlet 17 of the main case 1 and setting it in the main case 1 in an airtight manner, and it is fitted and held on the flange 24 of the dust collection case 18. has been done. 17 is a support plate 27 for holding and setting a paper bag filter, which will be described later, in the dust collection case 18, and is attached to the flange 2 of the dust collection case 18.
It is arranged in four parts so that it can be opened and closed so that about half of the opening can be closed. Reference numeral 28 denotes a coarse filter, which is a mesh filter made of nylon, polyethylene, etc., and is formed by integrally joining the vibration receiver 29 and the vibration transmission plate 30. The vibration receiver 29 of the coarse filter 28 is fitted and held in the receiver 23 of the dust collection case 18 described above, and when the receiver 23 is struck by the striking plate 20, it senses the generated vibration energy and transmits the vibration. It serves to transmit vibrations to the entire surface of the coarse filter 28 via the plate 30.

31 is a paper bag filter made of a filter material such as Japanese paper or nonwoven fabric. This paper bag filter 31 is a disposable type filter that collects the garbage sucked into the inside of the bag and throws it away.It prevents the garbage from flying up when disposing of the garbage and allows hygienic garbage disposal. At the same time, the filter part of the vacuum cleaner can be easily maintained and inspected, and a strong suction force can be maintained at all times.

A mounting plate 32 for setting the paper bag filter 31 is made of relatively thick paper such as cardboard, and has an inlet 33. A guide hole 34, a seal plate 35, etc. are integrally formed.

5. The dust removal device is constructed as follows.

Numeral 36 is a holding plate for various gears made of synthetic resin or the like, and is held in the main body case 1 by a method such as fitting. 3
Reference numeral 7 denotes a face gear, which is a driving gear that moves and rotates with the rotation of the three-cord winding device to operate the dust removal device. Reference numeral 38 denotes a connecting gear that is integrally connected to the face gear and rotatably supported by the retaining plate 36. 39 is a dust removal gear that engages and rotates with the connecting gear 3B. This dust removal gear 39 comes into contact with a fine filter 19 provided at the bottom of the dust collection case 18, contacts the back surface of the filter 19, and rotates to impact the dust removal gear 39. A dust removal plate 40 which applies vibration to remove dust from the fine filter 19 is fixed by screws 41.

42 is a coupling gear that engages and rotates with the dust removal gear 39, and 43 is a coupling that transmits only one-sided rotation of the rotational force received by the coupling gear 39 to the rotating shaft 45 side. Yes, it is provided via a spring body 44.

That is, when pulling out the cord from the cord winding device, the driving rotational force received by the face gear 37 is transferred to the connecting gear 38.
The rotating shaft 45 is rotated via the dust removal gear 39 and the coupling gear 42, but the face gear 38 rotates in the direction in which the cord winding device 3 winds up the cord with the force of the mainspring. The rotating shaft 45 is configured not to rotate due to the action of the coupling 43 when the rotating shaft 45 is closed. Reference numeral 46 denotes a coupling that is fixed to the rotating shaft 45 by a screw 47 or the like and rotates integrally, and is engaged with the striking plate 20 provided in the dust collection case 18 mentioned above, and is used only when pulling out the cord to take up the cord. In conjunction with the rotation of the device 3, the striking plate 20 is operated to excite the receiving body 23.

6 The front lid device is constructed as follows.

Reference numeral 48 denotes a front cover, which is attached to the main body case 1 so as to be openable and closable so as to cover the outlet 17 portion of the main body case 1. 4
9 is a front cover, which has 50 suction ports. A check valve 51 is disposed at this suction port 50 portion.

Reference numeral 52 denotes a clamp, which is disposed between the front lid 48 and the front cover 49 via a spring 53. This clamp 52
is for engaging the front cover 48 with the main body case 1 and holding it so that it can be opened and closed.

54 is a lid cover, and the airtight packing 26 fitted to the dust collection case 18 mentioned above is inserted into the removal slot 1 of the main body case 1.
It is for holding in 7 parts.

Reference numeral 55 denotes a suction packing made of rubber, soft PVC, etc. that is fixed to the lid cover 54, and is attached to the paper bag filter 31.
The suction port 50 and the suction port 33 are brought into contact with the mounting plate 32 and serve to connect the suction port 50 and the suction port 33 in an airtight manner. A spare paper bag filter 31 is stored in the 10-component storage room. Reference numeral 56 denotes a pocket lid for opening and closing the parts storage chamber 10, and is rotatably arranged in the main body case 1. Reference numeral 57 is a dust indicator which is generally known in the art and is used to display the amount of dust accumulated and to notify the user when it is time to dispose of the dust.

Reference numeral 58 denotes a top cover placed on the top of the main body case 1 for decoration.

59 goes into the motor storage chamber 7, and the anti-vibration rubber (large) 60 and the same (
(Small) 61 shows a motor that is internally housed in a vibration-proof manner.

Reference numeral 62 denotes a cord winding device, which is also disposed within the cord winding device storage chamber, and is used to pull the power cords 63 into the main body case using the force of a spring and organize them. In this embodiment, the rotational power of the cord winding device 62 also serves as a driving source for the dust removal device 5 of each filter.

The present invention has the above configuration, and its functions and effects will now be described in detail.

The vacuum cleaner of the present invention is usually equipped with a 31 paper bag filter for cleaning.

The 31 paper bag filter is installed on the 25 guide boss of the 18 dust collection case and the 32 mounting plate of the 31 paper bag filter.
It is set by aligning the 4 guide holes and placing the lower side on the 27 support plate.

When the vacuum cleaner body with the paper bag filter 31 set is operated in this way, the dust (garbage) sucked in from the suction port 50 flows into the suction port 33 of the paper bag filter 31, enters the bag of the paper bag filter 31, and collects dust. only is filtered,
Clean airflow is achieved through coarse filter 28 and fine filter 1.
9 and is discharged from the exhaust port via the exhaust chamber 11 of the main body case 1.

As described above, the dust filtration system of the vacuum cleaner of the present invention has a three-stage filter structure including the paper bag filter 31, the coarse filter 28, and the fine filter 19, so the first stage paper bag filter 31 completely removes all the dust. Even if there is dirt that has passed through the paper bag filter 31 for various reasons such as not being filtered, or the paper bag filter 31 is damaged, the second stage coarse filter 28 or the third stage coarse filter 28 Since the airflow is filtered by the fine-mesh filter 19, the airflow discharged from the exhaust port of the main body case 1 is much cleaner than that of conventional vacuum cleaners, which greatly contributes to sanitizing the exhaust air.

Next, when the dust filtered in this way adheres to the surface of the paper bag filter 31 or the fine filter 19, the ventilation resistance at that part gradually increases, and the suction power of the vacuum cleaner decreases, making the vacuum cleaner less functional. However, in the vacuum cleaner of the present invention, when the cord 62 is pulled out at the beginning of cleaning, the cord reel 62 rotates, and in conjunction with this rotational force, the face gear 37 rotates. Dust removal gear 3
9 is rotated, the dust removal plate 40 presses and slides on the back surface of the fine filter 19 to apply vibration and first remove dust attached to the surface of the fine filter 19. At the same time, since the coupling gear 42 is rotating, the cam 46 operates the striking body 20, and the receiving body 23 is lifted by impact, thereby transmitting vibration to the entire surface of the dust collection case 18. At the same time, the vibration is also transmitted to the vibration transmission plate 30 via the vibration receiver 29 of the coarse filter 28 fitted to the receiver 19. In other words, the entire surface of the dust collection case 18 and the coarse filter 28 that are in contact with the paper bag filter 31 is vibrated, and this vibration is transmitted to the back surface of the paper bag filter 31.
Dust attached to the inner surface of the paper bag filter 31 is also removed by the transmitted vibration.

Further, when the cord 62 is wound into the main body after cleaning, the fine filter 19 is cleaned by the dust removal plate 40 attached to the dust removal gear 39, but the cam 46 is Since the impact body 20 is not rotated and the impact body 20 is not operated, the dust removal operation of the paper bag filter 31 is not performed.

As described above, in the vacuum cleaner of the present invention, the dust attached to each filter is automatically removed in conjunction with the operation of inserting and removing the power cord 62 at the beginning and end of cleaning, so that the suction force is always strong. It is something that can be sustained.

However, if the paper bag filter 31 eventually becomes full of dust, the suction power will not recover no matter how much dust removal work is performed.

At this time, open the front lid 48, first bend the sealing plate 35 part of the paper bag filter 31 and seal the suction port 33, then hold the mounting plate 32 part and attach the main body case 1 to the paper bag filter 311. If the paper bag filter 31 is pulled out from inside the dust collection case 18 that is still set in the dust collection case 18 and the paper bag filter 31 is thrown away together with the dust that has accumulated inside, into a trash can, etc., the trash disposal work is completed, so garbage disposal can be carried out very easily. It is something that can be done.

Another feature of the present invention is that the paper bag filter 31 can be disposed of as follows. That is, after opening the front lid 48 and closing the intake port 32 with the seal plate 35, pull out the dust collection case 18 from the main body case 1 with the paper bag filter 31 still set, and take it to a trash can or the like. Then, by turning the dust collection case 18 upside down and dropping the paper bag filter 31 into the trash can, the garbage can be thrown away together with the paper bag filter 31. Usually, the former method is used to
For example, whether the method of pulling out only the paper bag filter 31 and disposing of the garbage without removing the dust collection case 18 from the bag is sufficient to perform the function and is it easy to dispose of the garbage?
If a large amount of heavy garbage such as metal pieces or earth and sand is sucked in, the paper bag filter 31 may not be able to withstand the weight of the garbage and may break if pulled out alone, causing the garbage to scatter.
If the paper bag filter 31 is torn while vacuuming due to some trouble, if you try to pull out the paper bag filter 31 to dispose of the garbage, the garbage will scatter outside and become unsanitary. In such a case, as in the latter case, it is convenient to pull out the paper bag filter 31 together with the dust collection case 18 and dispose of the garbage in a sanitary manner.

After the garbage disposal is finished in this way, the pocket lid 56
If you open it, take out the refill paper bag filter 31, and set it in the dust collection case 18, you can clean it again.

Next, if there is no paper bag filter 31 to replenish due to forgetting to buy one or the like, the vacuum cleaner of the present invention can function as a vacuum cleaner without setting the paper bag filter 31.

In other words, if the paper bag filter 31 is not set,
The coarse filter 28 filters out relatively large debris such as cotton dust and paper waste, and the fine filter 19 filters fine debris such as sand and dirt, similar to a conventional vacuum cleaner. It is.

At this time, garbage can be disposed of by opening the front lid 49, pulling out the dust collection case 18 from the main case 1, taking it to a trash can, etc., and throwing away the garbage accumulated inside the dust collection case 18. It is something.

To explain the parts of the present invention in more detail, as shown in FIG. 10, since they are installed in a dimensional relationship of φA < φX < φB, even if the main body case 1 and the front cover device 6 hit furniture etc. during cleaning, the bumper 72 prevents the furniture and the main case from being scratched, and the structure described above prevents them from coming off even if they hit.

According to the embodiments of the present invention, the following effects can be obtained.

1. It has the effect of preventing scratches on furniture, etc., if the main unit hits a wall or furniture while cleaning.

2. If you hit the main unit against a wall or furniture while cleaning, the bumper will cushion the impact and prevent damage or scratches to the main unit.

3. The shape of the bumper hole on the main body and front cover is made larger than the bumper's protrusion and the inner wall's diameter is smaller than the bumper's protrusion, and the bumper's protrusion is made into a hollow cylindrical shape, making it easy to install. The main body and bumper protrusions are easy to work with, and dimensional accuracy does not need to be very high.
Excellent productivity.

4. Due to the structure explained in item 3 above, the bumper will not fall off or come up due to vibration or impact during use.

5. The structure described in item 3 above can prevent static pressure from leaking from the side wall of the main body case, so a high suction force can be maintained.

According to the present invention, it is possible to prevent scratches and damage to furniture and vacuum cleaners, which is the original purpose of the bumper, and since dimensional accuracy is not required in manufacturing, productivity is excellent and installation is easy. Therefore, it has the advantage of good workability and no performance deterioration from the bumper mounting part.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of the entire vacuum cleaner, Figure 2 is a sketch of parts around the main body case, Figure 3 is a sketch of parts related to the filtration filter (dust collection section), and Figure 4 is parts related to the dust removal mechanism. Figure 5 is a diagram of the front lid related parts, Figure 6 is a diagram of the dust collection section, Figure 8 is an explanatory diagram of how the main case is used for garbage disposal with the case upright, and Figure 9 is a paper bag filter. Fig. 10 is a cross-sectional view showing the state in which the paper bag filter is incorrectly installed, Fig. 11 is a partial cross-sectional view showing the bumper installation state and dimensional relationship, and Fig. 12 is a sketch showing the storage state of the bumper.
The figure is a diagram showing the production process of paper bag filters, Figure 13 is a diagram showing the dimensional relationship of the backflow preventer, Figure 14 is a conventional example with the backflow preventer removed, and Figure 15 is a dust collection case with a coarse filter. A floor plan incorporated into. 1... Main body case, 6... Front lid device, 18... Dust collection case, 48... Front lid, 59... Transmission blower, 72... Bumper,
73...Bumper hole, 74...Protrusion. Part A Part 12 Part 8 Part 9 Sad condolence /l Mistake lz Kousuke Figure 13 Certain figure 14 Procedural amendment (method) 7□471 needle Indication of the matter by Kazuo Wakasugi, Commissioner of the Japan Patent Office 1988 Patent Application No. 37964 Title of the No. Invention Relationship with Vacuum Cleaner Correcter I1 Patent Applicant IF Place 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo Name (5101 Hitachi Ltd. Representative 31) Masaru Osamu Shigeyo Residence No. 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo Subject of amendment Pages 18 and 19 of the specification. Supplementary IE') Contents A reprint of the specification (no changes) A brief explanation of the drawings Figure 1 is a vertical cross-sectional view of the entire vacuum cleaner, Figure 2 is a schematic diagram of the parts of the case station), Figure 3 is the filtration Filter (a sketch of the parts related to the dust collection section, Figure 4 is a sketch of the parts related to the dust removal mechanism, Figure S is a sketch of the parts related to the front lid, Figure 6 is an explanatory diagram of the usage state during the stagnation process, Figure 7 is a sketch of the dust collection section, Figure 8 is an explanatory diagram of how the main unit is being used for garbage disposal with the case upright, Figure 9 is a diagram showing the storage status of the paper bag filter, and Figure 10 is a diagram of the paper bag filter. Figure 11 is a partial cross-sectional view showing how the bumper is installed and its dimensional relationship. Figure 11 is a sketch showing the production process of paper bag filters. Figure 18 is backflow prevention. Figures 14 to 14 show the dimensional relationships of the bodies. Figure 14!l is a conventional example in good condition with the backflow preventer removed, and Figure 1I is a sketch of a coarse filter assembled into a dust collection case.

Claims (1)

[Claims] 1. In a vacuum cleaner consisting of an electric blower, a main body case, a dust collection case, and a front lid device, the side wall of the main body case and the front lid of the front lid device have a tapered shape with a large diameter on the outer wall side and a small diameter on the inner wall side. A bumper hole is provided in the part opposite to the hole position, which is larger than the small diameter part of the tapered hole and smaller than the large diameter part of the outer diameter.
A vacuum cleaner characterized by a press-fitted bumper integrally molded from a soft synthetic resin material with hollow protrusions.