JPS62233130A - Upright type 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 [Industrial Field of Application] The present invention relates to an upright vacuum cleaner, and particularly to a structural improvement of a handle mounting portion for operation.

[Conventional technology]

The conventional device has a structure in which a cylindrical handle is sandwiched between a main body and a semicircular holder, and fixed with screws, as described in Japanese Utility Model Application No. 55-79966.

[Problem that the invention seeks to solve]

In the conventional structure described above, the handle must be made of metal materials such as steel pipes or stainless steel, which has the disadvantage that the shape of the handle cannot be freely formed to match the main body, and special parts are required for attaching the handle. (a semicircular arc-shaped holder made of metal material), and the handle and holder are made of metal material (plated steel plate).

or stainless steel plate, etc.), it is heavier than plastic material, so the overall weight of the vacuum cleaner is large.
There were problems such as reduced ease of handling and portability.

SUMMARY OF THE INVENTION In order to eliminate the problems of the prior art described above, an object of the present invention is to reduce the weight of the handle while ensuring the strength of the handle without using special parts for attaching the handle, and to make the handle fit into the shape of the main body. The goal is to form it in a shape that suits the needs of the people.

[Means for solving problems]

The above purpose is to form the handle with a molded material such as a plastic material, and to attach the handle mounting part above the vacuum cleaner body;
A protrusion extending in the depth direction of the main body and a groove that fits into the protrusion are provided at the attachment part to the main body below the handle, and a cover is provided on the opposite side of the main body from where the handle is attached, which is fixed to the main body with screws or the like.

This is achieved by providing a groove extending in the depth direction of the main body and a protrusion that fits into the groove on the opposite side of the main body where the handle is attached and on the cover.

[Effect]

The attachment strength of the vacuum cleaner body and the handle is ensured by fitting the protrusions and grooves provided in the attachment portion and extending in the depth direction of the body. However, this alone is insufficient; in other words, if bending stress occurs at the base of the handle (such as when the handle tip is fixed and the main unit is lifted horizontally), the top surface of the main unit will deform and bend, and in the best case the vacuum cleaner It is quite possible for the top surface of the main body to be damaged. In contrast, one aspect of the present invention is to provide a cover not only on the side where the handle is attached but also on the side opposite to the handle, and also provide the main body and the cover with a groove extending in the depth direction of the main body and a protrusion that fits into the groove. By matching the covers, deformation of the top surface of the vacuum cleaner body can be reliably suppressed by the cover.

[Embodiments of the invention]

Two embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the suction body 1 is provided with a part of the rotating brush 23 facing the opening 3 of the bottom plate 2, and the rotating brush 23
3 is rotated by receiving power from an electric blower 6 associated with a dust suction operation drive unit via a belt 5.

The main body case 7 has an operating handle 8 extending upward, has a dust collection space 44 in the center, and is tiltably attached to the mouthpiece 1 as shown by solid lines and chain lines in FIG. When not in use, it is constructed so that it can be placed upright on the mouthpiece 1 (as shown by the solid line).

In FIG. 3, W2. indicates the distance between the bottom plate 2 and the floor when it is stood upright, and wl indicates the distance when it is in use.

The mouthpiece body 1 has a switching knob 10 on the outside. Bumper 111 to prevent scratches on furniture; pedal 12° and main case 7 used when locking main case 7 onto mouthpiece 1;
A base frame 13 that pivotally supports the is disposed.

This switching knob 1o is a knob that adjusts the distance between the bottom plate 2 of the suction body 1 and the surface to be cleaned, and is integrally connected to the height setting cam 14 as shown in FIGS. 1 and 4. A knob position spring part 1 is configured to have an elastic force by providing a notch in a part of the cylindrical side surface so as to be fixed in a rotating position.
5 is provided. The height setting cam 14 is
As shown in FIG. 5, it is provided with planes X, Y, and Z that are divided approximately equally in the circumferential direction and have a level difference from each other in the direction of the axis of the knob.

Each plane selectively abuts the front wheel axle 16.

The front wheel axle 16 has a crankshaft shape as shown in FIG. 5, and both ends 17 thereof are rotatably supported by the mouthpiece body 1. A front axle 18 for height adjustment is provided at both ends 17.
is installed. Furthermore, as shown in FIG.
An axle push-out lever 19 protruding from the outside so as to engage with the axle shaft is configured to abut a portion of the both end portions 17 at an intermediate portion of the lever.

The front end of the mouthpiece body 1 is equipped with a driving pulley 20, a brush brush 21 with bristles flocked in a spiral shape on the outer periphery, and three brush brushes in the longitudinal direction.
There is a rotating brush 23 on which protrusions 22 are divided and arranged in a spiral manner.

The protrusions 22 are arranged at a total of six locations on the front and back sides of the rotating brush 23, and the brush brushes 21 are arranged on the surface where the protrusions 22 are not provided so that the spiral angle between each brush is almost constant. It is something that exists. Since the rotating brush 23 is used for flocking, it is necessary to have a relatively thick wall, and for this reason, it is made of plastic injection molded with a foaming agent mixed therein. Moreover, the rotating brush 23 is hollow inside and has a fixed shaft 2.
4, and is supported by a bearing 25, and the fixed shaft 2
Bearing covers 26 are disposed at both ends of the suction body 1 and are detachably attached to the mouthpiece body 1 via a vibration-proof cap 27 made of an elastic material. The anti-vibration cap 27 is a rotating brush 23
The suction body 1 is provided with a lip portion 28 on the inner periphery to prevent dust from entering the bearing 25. Further, in order to adjust the play in the axial direction of the rotating brush 23, a thrust spring 29 is provided between the bearing 25 and the bearing contact surface of the rotating brush 23.

As shown in FIG. 7, at the rear end of the mouthpiece body 1, a rotation shaft 30, which is integrally provided in the main body case 7, is rotated by a semicircular bearing rib 31 provided on the mouthpiece body 1. freely supported,
Similarly, as shown in FIG. 9, there is a pace frame 13 having a semi-circular bearing portion 32. Here, the semi-circular bearing rib 31 is rib-shaped because it is provided integrally with the mouthpiece body 1, but if it is semi-circular, it can be made as a separate part from the mouthpiece body 1 and configured without being rib-shaped. It is something. The base frame 13 is approximately U-shaped when viewed from the bottom as shown in FIG. In order to lock the main body case 7 at the positions shown by solid lines and chain lines in FIG.

A lock arm 35 is provided that comes into contact with a locking portion 34 provided on the main body case 7. In addition, both sides of the U-shape,
That is, the portion constituting the bearing portion 32 is cylindrical, which increases rigidity and allows for easy provision of reinforcing ribs without affecting the appearance. Furthermore, the U-shaped central portion has a sloped portion 82 at the rear of the main body, and has a sloped surface corresponding to the sloped portion 82 so as not to interfere with the sloped portion 82 when the main body case 7 is tilted horizontally. are doing.

The lock arm 35 has a cylindrical portion 36, and a helical biasing spring 37 is provided to bias the lock arm 35 toward the locking portion 34 with the cylindrical portion 36 as a rotation axis. Further, the lock arm 35 is integrally provided with a flat portion 38 that comes into contact with the lower end of the pedal 12 when the pedal 12 is depressed.

The lock arm 35 is disengaged from the locking portion 34 by depressing the pedal 12. Here, the pedal 12 is attached with a support shaft 39 provided on the mouthpiece body 1 as the center of rotation, and when it is not depressed, the biasing force of the biasing spring 37 is applied to the flat surface part 39.
The position is determined by the contact of the lower end with 8. Furthermore, the pace frame 13 is provided with a belt cover 40 on the side on which the belt 5 is suspended for safety.

As shown in FIG. 7, the aforementioned dust flow path in the suction body 1 communicates with the main body duct 42 through the suction duct 41 and is connected to the main body case 7. As shown in FIG. 12.13, the suction duct 41 has a corrugated portion 84 in the middle to provide elasticity, and the opening 3 side of the suction body 1 is
A 0-body duct which has a flange part 87 formed in a wrap shape so that it fits into a groove part 86 formed by a rib body 85 arranged on the suction body 1 and allows dust and airflow to flow smoothly into the duct. The side that fits with 42 is.

It is formed into an elbow shape so that the flow path is bent at approximately 90 degrees, and the end face has a cylindrical fitting part 88 formed in a stepped shape that widens to the outside for fitting. Furthermore, when attaching the suction duct 41 to the suction body 1, as shown in FIG. The base frame 1 is positioned and installed by pushing it in so that it aligns with the fitting part (body duct side) 89, as shown in Fig. 11.
3, a guide portion 90 and a duct holding portion 91 are formed in a semicircular arc shape, and position and hold a positioning portion 92 of the suction duct 41. At this time, although the positioning part 92 shown in the embodiment (drawing) bends the flow path, there is no problem in maintaining this positioning even if it is not bent, that is, in a straight shape.By the way, the main body duct 42 has a fitting part 89 (main body duct side) with the suction duct 41, and is fitted inside the rotation shaft 3o of the main body case 7. The exhaust flow of the electric blower chamber 43 is connected to this rotation axis 3.
The main body duct 42 has a stepped part 93 for fast flow so that the flow does not pass through the inside of the mouthpiece body 1 and go toward the suction body 1 side.
The fitting part (main body duct) of the main body duct 42 has a positioning part (main body duct) 94 having a diameter that fits with the inner diameter of
The main body duct side 89 is positioned.

Since the diameters of the fitting part 89 and the positioning part 94 are different as is clear from the drawings, a duct tapered part 95 is provided in the middle so that dust and air flow smoothly. Since the main body duct 42 is installed across the electric blower room 43 and the dust collection space 44, it is installed to improve airtightness with the airtight rib body 96 provided on the main body case 7 to ensure airtightness of both chambers (rain space). It has an airtight stepped portion 97 at the top.

The main body case 7 is roughly divided into three spaces: an electric blower room 43. It consists of a dust collection section space 44 and a cord reel chamber 45.

The electric blower room 43 includes an electric blower 6 and an exhaust port 46.
, an intake duct 48 having a suction port 47 that communicates with the dust collection space 44, and an inlet 50 of an exhaust duct 49 that communicates with the cord reel chamber 45 are provided. Extended axle push lever 19
A stepped portion 51 is provided to engage with. Intake duct 48
is fitted with an airtight rib body 96 provided on the main body case 7 via a soft duct packing 98 with a circular cross section,
A partition wall 99 provided approximately in the center of the flow path as shown in FIG.
This prevents the generation of swirling flow in the duct due to fan rotation of the electric blower 6, smoothes the flow, and significantly reduces the noise level. Furthermore, the intake duct 4
8 is equipped with a reflecting plate 54 that is wrapped around a sound absorbing plate 100 (urethane material) and equipped with a lamp 52 for illumination and its lamp holder 53 in order to reduce airflow noise. Lamp g installed on the wall of the dynamic fan room 43
55 to the outside. At this time, a part of the exhaust air from the electric blower 6 is sent to the lamp 52 portion to reduce the surface temperature of the lamp 52.

In addition, in the dust collecting space 43, a main body duct 4 is provided along the back side.
2 is arranged, and as shown in FIG. 14, the main body duct 42
The T-shaped fitting 4 is connected to the opening 56 of the opening 56 . This T-shaped fitting 4 is divided into two parts, and one opening 9a is attached to the main body case 7 by a box-shaped part called a filter base 58 via an airtight packing 57.

The other opening 9b is normally closed by a channel cover 80 that can be opened and closed and has an arc-shaped gasket 79. It is equipped with a tapered part 81 so that it can be fitted with the joint part of the flow path cover 80.
is opened to fit the joint part into the tapered part 81, and
- It is configured so that the flow path from the mouthpiece body 1 is closed at the side surface of the joint part. The filter 59 that collects dust is made of a material such as paper or cloth, and is detachably attached to the filter base 58 by engaging the opening part 60 with the holder 61. Airtightness between the dust collecting space 43 and the outside is achieved by dust collecting gaskets 62 provided around the periphery and airtight ribs 64 provided on the front M63. The inner space 9 is configured to have a negative pressure. The front M63 has a filter 59
In order to notify when it is time to dispose of the dust inside, and to prevent the temperature from rising due to insufficient cooling of the electric blower 6 when the air volume decreases, a dust meter 65 is installed that has the function of supplying a bypass flow from the outside. Front M63 by 101
It is held in In addition, a clamp 66 is attached to a clamp spring 1 in order to removably engage the main body case 7 at the upper end.
It is provided together with 02.

Further, the cord reel chamber 45 includes a cord reel 68 for winding the power cord 67. Power switch with volume 6
9. A cord reel button 7o and a lower outlet 1 of an exhaust duct 49 are provided.

The cord reel button 70 is biased upwardly by a button spring 104, and when assembled, as shown in FIG. After assembly, as shown in FIG. 18, a cord opening 106 is provided directly below the spring support rib 105 to prevent the spring support rib 105 from bending. A power transmission line 72 from the cord reel 68 to the electric blower 6 is connected through an exhaust duct 49.Here, the exhaust duct 49 is The main body case 7 is closed with a duct lid 73 and constitutes a duct.

The cord reel chamber 45 includes a main body case 7 and a reel lid 74.

A cord reel 68 is attached to the reel lid 74 together with a roller lever 103 and a lever spring 107 for stopping the rotation of the cord reel 68.
7 is broken and needs to be replaced, the contact piece 75 has a structure that can be separated from a ring-shaped contact 77 provided on a reel support base 76 disposed on the main body case 7 side. The power transmission line 72 connected to the contact 77 can be replaced without touching it.

As shown in FIG. 19, the reel support stand 76 has a contact cover 1
15 is attached, and has a control board 112 inside for controlling the power consumption of the vacuum cleaner. The locking portion 114 of the control board 112 engages with the locking protrusion 113 of the contact cover 115 and is attached and held. This is good from the standpoint of protecting the live parts. That is, if the terminals of the reel support stand 76 and the control board 112 are electrically protected separately, the number of parts and space will increase. ).

This makes it possible to reduce manufacturing costs. Further, as shown in FIG. 20, the terminal portion of the power switch 69 with a volume is covered with a switch cover 110 which is divided into left and right halves for electrical protection. In addition, these electrical parts can be assembled and wired as shown in the figure and formed as one component, so that assembly and disassembly into the main body can be easily performed. A volume knob 111 is installed.

Here, 1. Power consumption is controlled using a thyristor, and the thyristor is attached to the motor guard 116 provided directly above the suction port 47 below the dust collection section space 44 to achieve cooling by suction airflow. A handle cap 78 made of a soft material is provided at the tip of the handle 8 attached to the upper end of the cord reel chamber 45 in order to cushion the impact in the event of an unexpected fall backwards.

A mounting screw 117 for preventing the handle 8 from coming off and a tape 118 for holding the handle 8 to the handle 8 are attached to the main body mounting portion of the handle 8, and grooves (handle) 119 are provided on the sides (both sides).

Further, a fixing nut 127 for attaching a mounting screw 117 is embedded in the main body case 7, and a rib-shaped protrusion (main body) 12 is fitted into the groove (handle) 119.
0, and their fitting ensures the strength of attachment of the handle 8 to the main body case 7. However, in this state, if bending stress is applied to the attachment part of the handle 8, such as when lifting the vacuum cleaner body by holding the handle 8, the upper surface of the main body case 7 will be deformed and damaged. In order to prevent deformation, a protrusion 1 extending in the depth direction is provided on the reel lid 74 that covers the cord reel 68.
21 is provided, and a groove (main body) 122 is provided in the main body case 7 to fit with this protrusion 121. In addition, in this embodiment, fitting ribs (reel cover) 123 and 124 are further provided on the reel lid, and fitting ribs (main body) 125 and 126 are provided on the main body case 7 to fit with these, and reinforcement is performed. There is.

Next, the use of the upright type vacuum cleaner according to this embodiment configured as described above will be explained.

When in use, the power cord 67 is pulled out from the cord reel 68, connected to a power source, and the pedal 12 at the rear of the mouthpiece body 1 is stepped on to tilt the main body case 7 from above the mouthpiece body.

Next, when the power switch 69 is turned on, the electric blower 6
is operated, and the rotating brush 4 is rotated via the belt 5 along with the suction by the blower.

At this time, when the position of the switching knob 10 is set so that the position X of the height setting cam 14 comes into contact with the front wheel axle 16, the amount of protrusion of the front height adjustment axle 18 from the bottom plate 3 is the minimum. (position indicated by the solid line in Figure 3), making it ideal for cleaning carpets with short piles.

In addition, if the carpet has a long pile or a medium pile, the height adjustment front axle 18 can be adjusted by turning the switching knob 10 to the Z or Y position of the height setting cam 14. Since the amount of protrusion from the bottom plate 2 changes, it is possible to clean according to the difference in the pile of the carpet.

Here, a case in which the switching knob 10 is turned will be explained. That is, when the main body case 7 is placed against the suction body 1, the stepped portion 51 provided in a part of the main body case 7 due to its rotation.
pushes down one end of the axle push-out lever 19 that protrudes from the suction body 1, and by using this, the front wheel axle 1 for height adjustment is
Push down the both ends 17 of the front wheel axle 16 until the both ends 17 of the front wheel axle 16 are at the maximum protrusion amount of the height adjusting front axle 18 or a little more than that. Then, the height setting cam 14 and both ends 17 are separated, and no force is applied from other sources to turn the switching knob 10, so that the switching knob 10 can be easily turned to a desired position.

After that, when the two-body case 7 is tilted again, the stepped portion 51
similarly rotates to free the axle push lever 19 and bring the height setting cam 14 into contact with both ends 17 of the front axle 16.

When cleaning is performed using the method described above, the air flow containing a large amount of dust passes through the opening 3 of the bottom plate 2 of the suction body 1, passes through the suction duct 411 and the main duct 42, and flows into the filter 59. The filter 59 separates and filters clean air from dust, and only the clean air passes from the suction port 47 to the intake duct 48 and then through the electric blower 6, and a portion of it is exhausted to the outside of the machine from the exhaust port 46. At the same time, a portion also flows into the exhaust duct 48 from the inlet 50 and is introduced into the cord reel chamber 45. This exhaust gas cools the power cord 67, the contact piece 75 of the cord reel 68, the contact 77 of the rod support joint 76, and the like, and is then discharged to the outside of the machine. On this occasion,
The exhaust duct 49 has a relatively long distance, so that a noise reduction effect can be obtained, and the fact that the exhaust gas is released from the narrow exhaust duct 49 to the cord reel chamber 45, which is a wide space, also has an effect on noise reduction.

As described above, according to this embodiment, in order to prevent attachment of the handle 8 to the main body case 7 and to prevent deformation of the main body case 7, a protrusion and a groove that extend in the depth direction and fit into each other are provided. By doing so, the installation of the handle 8 and the prevention of deformation of the main body case 7 can be ensured, so the handle 8 itself can be formed from a molded product such as plastic, reducing the number of parts, increasing the freedom of shape, reducing weight, and manufacturing cost. This has the great effect of significantly reducing the amount of

Here, the advantages of providing the protrusions and grooves in the depth direction are as follows. In other words, the direction of the bending stress applied to the base of the handle 8 is the front-back direction of the cleaning direction, and (
When lifting the main body by holding the handle 8 (for example, there are no protrusions or grooves in the depth direction, the fitting ribs (reel M) 123, 124 of this embodiment and the fitting ribs (main body) 125° 126 fit together). (However, assuming that the handle 8 is securely fixed to the main body case 7)
.

If a load is not applied statically but suddenly, the fitting will be disengaged due to impact, and the upper surface of the main body case 7 will be deformed and damaged. That is, in this case, when the fitting is performed, the direction in which force is applied is the direction in which the fitting is removed. On the other hand, in the case of fitting using the depth-direction protrusion and the groove, the direction in which force is applied due to bending is not the direction in which the fitting is removed, so that the fitting is strong.

〔Effect of the invention〕

According to the present invention, there is an effect that sufficient strength can be ensured even if the handle is molded without using special parts for attaching the handle.

Therefore, it is possible to reduce the number of parts of the handle portion, thereby reducing the weight, and the handle portion can be formed in a shape that matches the shape of the main body.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of an upright vacuum cleaner showing an embodiment of the present invention, Fig. 2 is an external perspective view of the embodiment, Fig. 3 is an explanatory view of tilting the main body of the embodiment, and Fig. 4 is a vertical sectional view illustrating the main part of the suction port of this embodiment, FIG. 5 is a developed view of the main part of the suction port of this embodiment, FIG.
The figure is a P view (bottom view) in FIG. 1, and FIG. 8 is an explanatory diagram in which the base frame 13 portion is extracted from FIG. 7. 9 is a cross-sectional view taken along the line A-A in FIG.
The figure is a cross-sectional view showing the duct installation state of this embodiment.
The figure is a sectional view taken along the line B-B in Figure 7, and Figure 13 is a cross-sectional view taken along the line B-B in Figure 7.
2 is a sectional view taken along the line C-C in FIG. 2, FIG.
5 is a diagram showing how the main body duct of this embodiment is attached to the main body case 7, FIG. 16 is a front view showing the cord reel chamber of the main body case of this embodiment, and FIG. 17 is a D-D! in FIG. 16!
18 is a sectional view taken along line E-E in FIG. 1 with the handle removed; FIG. 19 is an exploded perspective view of the reel support stand, control board, and board box of this embodiment; FIG. 20 After assembling the parts in Figure 19,
Partial cross-sectional assembly state diagram with connection to the switch part, Part 2
Figure 1 is an exploded perspective view of the handle attachment part of this embodiment, Figure 2 is
Figure 2 is a developed sectional view of the handle attachment part of this embodiment, Figure 23 is the Q homeland when the handle is removed in Figure 1, and Figure 24 is the R view when the handle is removed in Figure 1. FIG. 25 is a partially cutaway vertical sectional view showing the exhaust duct of this embodiment, and FIG. 26 is an external perspective view of the intake duct of this embodiment.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body having a suction port at the bottom, a dust collecting section and an electric blower inside, and a handle for operation at the top; A protrusion extending in the depth direction and a groove fitting therein are provided, and a cover is provided on the opposite side of the main body to which the handle is attached, and a cover, etc. extends in the depth direction of the main body between the opposite side of the main body to which the handle is attached and the cover An upright-type vacuum cleaner that has a handle attachment part that is provided with a protrusion and a groove that fits into the protrusion. 2. Claim 1 is characterized in that the handle mounting portion above the main body and the protrusion and groove provided on the side opposite to the handle mounting are arranged adjacent to each other across the thickness of the main body. Upright type vacuum cleaner.