JPH034826A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To simplify the shape of the upper case and to eliminate the air leak from a bearing part by constituting the cleaner body of a body case, the upper case and the middle case, and forming a shaft supporting part of a handle in the middle case. CONSTITUTION:The middle case 45 is interposed between a body case 12 and the upper case 13 and joined airtightly through a seal member 46 to a partition wall 22, a supporting wall 24, a holding wall and the upper edges of both side walls 30, 30, and closes up the upper face opening part of a suction chamber 29 and a motor-driven air blow chamber 15. On both sides of the upper face of the middle case 45, a rectangular shaft supporting plate part 79 is provided projectingly so as to be opposed, a shaft hole 82 to which a shaft part 81 of a handle 80 is engaged so as to be freely turnable is formed, and to the shaft part 81 of this handle 80, a shaft part 84 of a supporting arm 83 provided projectingly on both sides of the rear end of a dust collecting chamber cover body 20 is engaged coaxially so as to be freely turnable. In the upper face 13, an opening part from which the shaft supporting plate part 79 is discharged is formed, and on both its sides, both side parts of a roughly U-shaped handle 80 and a recessed part 96 on which a supporting arm 83 of the dust collecting chamber cover body 20 is provided are formed. Accordingly, the handle 80 and the dust collecting chamber cover body 20 can also be integrated into the upper case 13, and the assembling property is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner main body structure having a handle on the top surface of the vacuum cleaner main body.

(Prior art) A conventional vacuum cleaner of this type was developed using Utility Model Application No.
As described in the above publication, the handle attached to the top surface of the vacuum cleaner body was rotatably attached to the upper case coupled to the upper part of the main body case.

(Problems to be Solved by the Invention) In the vacuum cleaner of the conventional structure described above, in order to rotatably attach the handle to the upper case that covers the upper opening of the main body case, it is necessary to
It is necessary to form a bearing part for the handle on the upper case, and this bearing part must be thickened or reinforced with ribs, etc., making the shape of the upper case complicated and making it difficult to spread the entire upper case evenly. It is difficult to form a mold with a certain thickness, and the uneven thickness makes the mold complicated, resulting in poor balance between melt flow and molding pressure, causing molding distortion, impairing the appearance, and reducing strength. There was a problem. Furthermore, as shown in FIG. 7, in order to pivotally support the handle 1112, the upper case 101 must have a protruding shaft portion 103, and for molding purposes, a punching hole 104 is formed in the upper case +01. This causes air leakage, and this air leakage causes unstable performance.In addition, air leakage causes wind noise, which causes noise generation, and many sealing members are required to prevent air leakage. However, it is difficult to assemble, and even if many sealing members are used, it is difficult to seal the entire structure, and it is difficult to reduce noise caused by wind noise.

The present invention has been made in view of the above-mentioned problems.The main body of the vacuum cleaner is composed of a main case, an upper case, and a middle case, and the shape of the upper case is changed by forming the shaft support plate of the handle in the middle case. It can be simplified, the mold can be simplified, the flow of the metal can be improved,
It improves the molding balance, eliminates air leakage from the bearing, improves suction performance, reduces wind noise, reduces operating noise, and improves ease of assembly.
The purpose is to provide a vacuum cleaner that can be assembled at low cost.

[Structure of the invention]

(Means for Solving the Problems) The vacuum cleaner of the present invention includes an electric blower chamber containing an electric blower, and a dust collection filter formed on the front side of the electric blower chamber, connected to a suction port, and detachably attached. The vacuum cleaner main body has a dust collection chamber, the vacuum cleaner main body is formed of a main body case and an upper case, the main body case has an open upper surface, and the upper surface of the electric blower chamber formed in the main body case. an intermediate case is provided between the main body case and the upper case and closes the upper opening of the electric blower chamber; a shaft support plate portion of the handle is formed on the upper surface of the inner case; A shaft portion of a handle disposed on the upper surface of the upper case that closes an upper surface opening of the case is rotatably supported on a shaft support plate portion formed on the inner case.

(Function) In the vacuum cleaner of the present invention, since the electric blower chamber formed by opening on the top surface of the main body case is closed by the inner case, the electric blower chamber is reliably maintained airtight and there is no air leakage. Performance is stabilized, and since the handle is attached to this middle case, the shape of the upper case is simplified, the thickness of the upper case is made uniform, and moldability is improved, and the shaft support of the handle is protected. can.

(Embodiment) The configuration of an embodiment of the present invention will be explained with reference to FIGS. 1 to 7 of the drawings.

11 is the main body of the vacuum cleaner, and as shown in Fig. 1, the main body case 1 is
2 and an upper case 13, and an electric blower chamber 15 that houses an electric blower 14, and a dust collection filter 16 that is formed on the negative pressure side of the front side of the electric blower chamber 15 and is detachably attached thereto. Dust collection chamber 17 and the electric blower chamber 1
The exhaust chamber 18 is located on the positive pressure side of the rear side of the exhaust chamber 5.

As shown in FIG. 3, the main body case 12 is provided with a dust collection chamber wall 19 forming the dust collection chamber I7 on the inside of the front part, and the upper surface opening of this dust collection chamber 17 is connected to the upper case I3.
It is opened and closed by a dust collection chamber lid body 2θ which is provided so as to be openable and closable. A suction port (not shown) is formed in the dust collection chamber lid 20 to communicate with the dust collection chamber 17 and connect a hose connection pipe detachably and rotatably. The opening frame portion of the bag-shaped dust filter 16 is held detachably so that the zero portion of the dust filter 16 is airtightly connected to the suction port.

Further, as shown in FIGS. 1 and 3, the rear side of the dust collection chamber wall I9 of the main body case I2 serves as a vertical partition wall 22 between it and the electric blower chamber 15, and this partition wall 22
A grid-like ventilation hole portion 23 is formed in the partition wall 2.
This partition wall 22 is located on the rear side with a small gap from 2.
A support wall 24 is formed in parallel with the support wall 24, and a ventilation hole 24 that communicates with the intake side of the electric blower 14 is formed in the support wall 24! Further, the front surface of an elastic body 25 formed of an annular rubber or the like fitted to the front part of the electric blower 14 is airtightly abutted and supported on the rear side surface of the support wall 24. . The lower part of the elastic body 25 is supported by a protrusion 26 that protrudes from the rear lower part of the support wall 24 . In addition, the front side of the rear exhaust chamber 18 of the main body case 12 is connected to the electric blower chamber 1.
A retaining wall 27 is formed parallel to the supporting wall 24, and the retaining wall 27 partitions the filter 2 into the exhaust chamber 18.
8 is retained. In addition, the partition wall 2
2. The side ends of the support wall 24 and the retaining wall 27 are connected to form a suction chamber 2 between the partition wall 22 and the support wall 24.
9 and forming the electric blower chamber 15 between the supporting wall 24 and the retaining wall 27.
is provided integrally with the main body case 12. The main body case 12 is formed of an annular rubber which is positioned on the front side of the retaining wall 27 facing a vent hole 31 formed in the retaining wall 27 and fitted into the rear end of the electric blower 14. This electric blower 14 is in contact with the rear surface of the elastic body 32.
The positioning surface 33 that positions and holds the
A fitting surface 3 formed with a fitting recess 34 into which the elastic body 32 fitted to the rear end of the electric blower 14 is fitted.
A holding frame 36 having a shape of 5 is provided. Further, a rib-shaped protrusion 38 is provided between the support wall 24 and the retaining wall 27 to hold the lower surface of the intermediate portion of the electric blower 14 .

Further, a ventilation hole portion 23 is provided on the dust collection chamber 17 side of the partition wall 22.
A sub-dust collecting filter 39 is detachably provided facing the dust collecting filter 16 and capturing the dust leaking from the dust collecting filter 16.

Furthermore, a lattice-shaped ventilation section 40 is provided on the rear surface of the exhaust chamber 18.
is formed. The exhaust chamber 18 is provided with the high-density, high-efficiency exhaust filter 28 (0.3 μm DOP, collection efficiency of 99.97% or more), which is mainly composed of ultrafine glass fibers and The high-density, high-efficiency exhaust filter 28, which is formed by mixing metal fibers such as copper, filters out fine dust contained in the exhaust air and has a sterilizing and antibacterial effect. This exhaust filter 28 is airtightly held by a holding frame 41 around which a seal backing is wound.

Further, as shown in FIG. 2, a cord reel chamber 42 is formed outside one side wall 30 of the electric blower chamber 15, and a cord reel chamber 42 is provided in the vicinity of the side surface of the main body case 12. 43 shaft support walls 44 are provided.

Further, 45 is a middle case, which is interposed between the main case 12 and the upper case 13, and includes the partition wall 22, the support wall 24,
The inner case 45 is airtightly joined to the upper edges of the retaining wall 27 and both side walls 30 and 30 through a sealing member 46, and the upper openings of the suction chamber 29 and the electric blower chamber 15 are closed off. There is. Engagement edges 47 are formed downwardly on both side edges of the middle case 45, and the partition wall 22 and the support wall 22 are formed downwardly on the front side.
Holding grooves 48 and 49 for fitting and holding the seal members 46 fitted therein are formed on the upper edges of 4, respectively, and a lower surface that is engaged with the upper surface of the elastic body 25 is formed on the rear side of the rear holding groove 49. A fitting surface 35 is formed with a concave arc-shaped projecting edge 50 and a fitting recess 34 of the holding frame 36 into which the elastic body 32 fitted to the rear end of the electric blower 14 is fitted on the rear side. A fitting wall 51 that is engaged with the upper side of the elastic body 32 is formed so as to face the elastic body 32 .

A support portion 53 for the cord reel 43 is integrally formed on the lower surface of the inner case 45 along the outside of one side wall 30 in the front-rear direction so as to protrude into the cord reel chamber 42 . A bearing portion 55 for a support shaft 54 that rotatably supports the cord reel 43 is formed in this support portion 53, and further, a bearing portion 55 of a support shaft 54 that rotatably supports the cord reel 43 is formed in this support portion 53. A contact piece 57 is provided. In addition, a shaft support piece 58 of the cord reel 43 is provided in the inner case 45 so as to face the shaft support wall 44 , and the shaft support wall 44 and the shaft support piece 58 support a bearing 59 of the support shaft 54 .
is clamped and held.

A holding groove 48 into which a seal member 46 fitted to the upper edge of the side wall 30 is fitted is formed inside the base of the support portion 53 .

In addition, as shown in FIGS. 4 and 5, the inner case 45
A cylindrical guide part 60 is protruded from the upper surface of the guide part 6.
Cord reel 4 is located in this inner case 45 on one side of 0.
The middle part of an operating lever 62 formed in an abbreviated shape of the brake device 61 of No. 3 is rotatably attached, and a shaft part 63 protruding from one end side of this operating lever 62 has a brake that approaches and separates from the cord reel 43. A long hole 65 of the roller 64 is pivotally supported. A regulating edge 65 is provided on the lower surface of the inner case 45 for regulating the brake roller 64 so that it comes into pressure contact with the cord reel 43! The other end of the operating lever 62 is biased by a coil spring 66 in a direction in which the brake roller 64 comes into contact with the cord reel 43.

A brake operation button 67 is fitted into the guide portion 60 so as to be able to move forward and backward.
a protrusion 68 that presses the other end of 2 against the spring 66;
The operation button 67 is urged upward by a coil spring 69 so that the protrusion 68 moves away from the operating lever 70 . Moreover, this operation button 67 is connected to the upper case 1.
The operation button 67 is fitted into the insertion hole 71 of No. 3 so as to be able to move forward and backward, and its upper surface is exposed to the upper case 13 so that it can be operated.

Further, a circuit board 74 of an electronic control device 73 that controls the input of the electric blower 14 is attached to the upper surface of the inner case 45.
A circuit board 76 forming a control display section 75 of the electronic control device 73 is attached to 5 . The control display section 75 is formed of a light emitting diode or the like, and is mounted on the upper case 13 so as to face above the control display section 75.
A transparent window 78 made of glass or the like is formed to see through.

Furthermore, rectangular shaft support plate portions 79 are protruded from both sides of the upper surface of the inner case 45, and cylindrical shaft portions 81 on both sides of the handle 80 are rotatably mounted on the shaft support plate portions 79. A shaft hole 82 to be engaged is formed. And the shaft portion 8 of this handle 80
1 is coaxially and rotatably engaged with a shaft portion 84 of a support arm 83 protruding from both sides of the rear end of the dust collecting chamber lid 20.

Further, the inner case 45 is connected to the partition wall 22, the support wall 24, the retaining wall 27, and both side walls 30 with a seal member 46 interposed therebetween.
．． A seal member 46 is interposed at the upper end of the main body case 1.
The upper case 13 is secured to the upper case 2 by screws or the like.

Further, the upper case 13 is connected to the upper opening edge of the main body case 12 by means of screws or the like by sandwiching an inner protrusion 86 of a bumper 85 formed of rubber or the like.

The inner protrusion 86 of this bumper 85 has the inner case 45
An engagement groove 87 is formed to engage the engagement edge 47 of.

Note that this bumper 85 can also be formed integrally with the seal member 46.

The sealing member 46 integrally and airtightly seals the upper surface openings of the suction chamber 29 and the electric blower chamber 15 with the inner case 45.

The upper case 13 is formed with an opening 95 through which the shaft support plate 79 projects, and the shaft 81 is rotatably inserted into the shaft hole 82 of the shaft support plate 79 on both sides of the opening 95. The dust collection chamber lid body 2 has a shaft 84 rotatably supported on both sides of a substantially U-shaped handle 80 and a shaft hole 82 of this shaft 81.
A recess 96 in which a protruding support arm 83 is disposed is formed on both sides of the rear end of the recess 96 . Further, both sides of the transparent window 78, whose front and rear ends are engaged with the opening 95 in the upper case 13, are engaged between the upper ends of the shaft support plate 79.

Furthermore, an accessory storage space 89 is formed above the electric blower chamber 15 and the exhaust chamber 18 of the upper case 13, and is opened and closed by a storage lid 88, as shown in FIG. This accessory storage space 89 is designed to store accessories 90 such as a floor brush and a hanging spout.

Further, a flexible wheel 91 is provided at the front lower part of the main body case 12, and rear wheels 92 are provided on both sides of the rear part, and a part of this rear wheel 92 protrudes rearward. The vacuum cleaner main body 11 can be supported upside down with the rear side facing downward by the support legs 93 projecting from the rear surface.

Next, the operation of this embodiment will be explained.

The electric blower chamber 15 is formed in a space surrounded by the support wall 22, the retaining wall 24, and both side walls 30 of the main body case 12 of the vacuum cleaner main body 11, and this upper surface opening is surrounded by the sealing member 4.
6, the suction chamber 2 is closed by the inner case 45.
9. The electric blower chamber 15 is reliably maintained airtight, and the exhaust air is filtered through the exhaust filter 28 to further capture fine dust contained in the exhaust air and included in the exhaust air exhausted to the outside of the vacuum cleaner body 11. Fine dust can be significantly reduced.

Then, the partition wall 22 of the main body case 12, the support wall 24,
The upper edge of the retaining wall 27 and both side walls 30, 30 and the middle case 4
A sealing member 46 interposed between the suction chamber 2 and the suction chamber 2
9 and the upper surface opening of the electric blower chamber 15 are integrally and airtightly sealed, so that the suction chamber 29 and the electric blower chamber 15 are more reliably held airtight by the sealing member 67, and there is no air leakage and the wind blower is prevented. Can reduce noise such as sound.

Further, an electronic control device 73 for controlling the input of the electric blower 14 and a control display section 75 are disposed on the upper surface of the middle case 45, and the cord reel 43 can be supported on the support section 53 formed on the side edge of the middle case 45. Since the brake device 61 of the cord reel 43 is provided in the inner case 45, the electronic control device 73 and the control display section 75 can be integrated in a concentrated manner. 8
1 is rotatably supported on a shaft, and a shaft 84 of a support arm 83 protruding from both sides of the rear end of the dust collection chamber lid 2G is rotatably supported in a shaft hole 82 of a shaft 81 of the handle 8θ. By supporting
The handle 80 and the dust collection chamber lid body 20 can also be easily assembled.
The ease of assembly is improved, and the control status of the electric blower 14 can be easily checked by looking through the control display section 75 through the transparent window 78 of the upper case 12.

When the electric blower 14 is driven in this state, the dust flowing into the dust collection chamber 17 from the suction port 19 is captured by the dust collection filter 16, and the air filtered by this dust collection filter 16 is transferred to the sub dust collection filter 39. Since the suction chamber 29 and the electric blower chamber 15 are reliably kept airtight by the inner case 45, the air is filtered through the outlet side of the electric blower 14 and sucked into the exhaust chamber 18 from the discharge side of the electric blower 14. In the exhaust chamber 18, the exhaust air is further filtered to remove fine dust contained in the exhaust air through an exhaust filter 28, and the exhaust air is further exhausted from the ventilation section 40.

Note that the structure is not limited to the structure in which the shaft hole 82 is formed in the shaft support plate portions 79 on both sides of the inner case 45, but a structure in which the shaft portion is formed in the shaft support plate portion 79 and the shaft hole is formed in the handle 80 may also be adopted. .

〔Effect of the invention〕

According to the present invention, the vacuum cleaner main body is composed of the main case and the upper case, and the shape of the upper case is simplified by forming the shaft support plate of the handle in the middle case that covers the electric blower room. This simplifies the molding die, improves the flow of the metal and improves the molding balance, and also eliminates air leakage from the shaft support of the handle, improving suction performance, reducing noise caused by wind noise, and reducing operating noise. It is possible to improve assembly efficiency and to assemble at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a vacuum cleaner showing one embodiment of the present invention, FIG. FIG. 5 is an enlarged vertical sectional side view of the cord reel chamber, FIG. 6 is a rear longitudinal sectional view of the handle, and FIG. 7 is another embodiment of the present invention. It is a vertical side view of a vacuum cleaner showing. 11. Vacuum cleaner body, 12. Main case, 13. Upper case, 14. Electric blower, I5. Electric blower room.
16... Dust collection filter, 17... Dust collection chamber, 45... Middle case, 46... Seal member, 79... Shaft support plate part, 80...
·handle. Invented on May 31, 1989 by Yoshihiro Matsui

Claims (1)

[Claims] (1) A vacuum cleaner body having an electric blower chamber containing a built-in electric blower, and a dust collection chamber formed on the front side of the electric blower chamber, communicating with the suction port and removably attaching a dust collection filter, and cleaning as described above. The main body of the machine is formed of a main case and an upper case, the main case has an open upper surface, the upper surface of the electric blower chamber formed in the main case is open, and the main case has a space between the main case and the upper case. An intermediate case is provided which is interposed to close an upper opening of the electric blower chamber, a shaft support plate of a handle is formed on the upper surface of the intermediate case, and an upper surface of the upper case which closes the upper opening of the main body case is provided. A vacuum cleaner characterized in that a shaft portion of the disposed handle is rotatably supported on a shaft support plate portion formed in the inner case.