JPH0646651U - Vacuum cleaner - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention can prevent the opening of the tip of a hose or extension pipe from being blocked over the entire circumference, and while maintaining a good suction force, scraping out dust etc. with a brush. It is an object of the present invention to provide an electric vacuum cleaner which can improve the effect and is less likely to be entangled in a brush with lint or the like, which is convenient in terms of appearance and hygiene. [Structure] A hose 4 connected to a cleaner body 2, an extension pipe 10 detachably connected to the hose, a brush base 26 attached to the tip of at least one of the extension pipe and the hose, and the brush. And a brush 28 protruding from the table. The brush base moves between a use position where the brush projects from the tip opening 13 of the hose or extension tube and a storage position where the brush is retracted on the outer circumference of the hose or extension tube rather than the tip opening. It is possible, and the brush is characterized in that it is partially provided without being continuous in the circumferential direction of the tip opening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric vacuum cleaner in which a brush stand having a brush is attached on a suction pipe line from a cleaner body to a suction head.

[0002]

[Prior art]

 Home electric vacuum cleaners are designed so that an extension tube is connected to a flexible hose connected to the main body of the vacuum cleaner, and a suction head having a suction port is attached to the tip of the extension tube for use.

The conventional vacuum cleaner is provided with brushes used as accessories when cleaning a shelf, a desk or a narrow space. This accessory is designed to be attached to the end of the extension pipe or hose for use. However, with this conventional electric vacuum cleaner, the suction head must be removed from the extension pipe and a new accessory must be attached each time the size of the area to be cleaned changes. Was sometimes required.

From this, as is conventionally seen, for example, in Japanese Unexamined Patent Publication No. 56-43921, an electric vacuum cleaner in which a cleaning tool having a brush is coaxially incorporated in the tip opening on the suction upstream side of the hose. It has been known.

The cleaning tool shown in this prior art includes a cylindrical housing fitted around the outer circumference of the hose. A cleaning ring is retained in the housing, and a flexible brush is embedded in the cleaning ring. The brush is provided continuously in the circumferential direction of the cleaning ring, and the tip end opening of the hose is surrounded by the brush.

[0006] Therefore, when the extension tube is pulled out from the hose to clean a narrow space, the brush is exposed at the tip opening of the hose that serves as a suction port, and the hose can be cleaned without attaching special accessories. It is ready to work.

[0007]

[Problems to be solved by the device]

 However, in the conventional cleaning tool, since the flexible brush is continuously provided in the circumferential direction so as to surround the tip end opening of the hose, when the cleaner main body is operated, the brush is attached to the end opening of the hose. It may be sucked in from the entire circumference and the opening area of this tip opening may be significantly reduced. Therefore, not only the suction force is lowered, but also the suction of the brush bends the brush itself, which reduces the effect of scraping out dust and dust on the surface to be cleaned.

Moreover, if the brush is continuous in the circumferential direction of the opening of the tip of the hose, lint and dust are easily entangled in the brush, and it is difficult to remove the entangled lint. In particular, since this brush is always exposed on the outer circumference of the hose, entangled lint and the like tend to be noticeable, leaving a problem in terms of appearance and hygiene.

Further, if the brush is made long so that dust can be easily scraped out, the brush easily falls down. Therefore, when the brush is continuous in the circumferential direction of the tip opening portion of the hose as in the conventional case, this brush is The tip opening of the hose may be blocked by the collapse of the hose. For this reason, when the cleaner body is operated, the brush is more easily sucked in, which causes a decrease in suction force. Moreover, when connecting the extension pipe to the hose, there is a risk that the brush may be caught in the fitting portion between the hose and the extension pipe.

Therefore, in the conventional cleaning tool, the brush cannot be lengthened due to its structure, and there is still room for improvement in enhancing the scraping effect of dust.

The present invention has been made under such circumstances, and it is possible to prevent the tip opening of the hose or the extension tube from being blocked by the brush, and while maintaining a good suction force, use the brush. It is an object of the present invention to provide an electric scavenger that can enhance the scraping effect of dust and the like, and is less likely to get tangled with the brush, and is convenient in terms of appearance and hygiene.

[0012]

[Problems to be solved by the device]

 To achieve the above object, the vacuum cleaner of the present invention includes a hose connected to the cleaner body, an extension pipe detachably connected to the hose, and an extension pipe connecting the hose and the suction head, and the extension pipe or The hose is provided with a brush base attached to at least one of the suction upstream side of the hose and a brush projecting from the brush base and scratching the surface to be cleaned.

The brush base has a use position at which the brush is projected from a tip opening on the upstream side of the suction of the hose or the extension pipe, and the brush is located on the outer periphery of the hose or the extension pipe rather than the tip opening. The brush is attached so as to be movable between the retracted storage position and the retracted position, and the brush is partially provided so as not to be continuous in the circumferential direction of the tip opening. There is.

[0014]

[Action]

 According to such a configuration, the brush for scraping is provided partially without being continuous in the circumferential direction of the tip end opening portion of the hose or the extension tube, so that the brush is not removed during operation of the cleaner body. Even if sucked into the tip opening, the tip opening is not blocked over the entire circumference, and the opening area required for suction can be secured. Also, since the brush is not continuous in the circumferential direction of the tip opening and is interrupted midway, it becomes difficult for tangles to get entangled in this brush, and even if it does get in, insert your fingertips, etc., from the part without the brush. It can be easily removed by doing.

Further, when the brush base is moved to the retracted position, the brush is retracted from the opening at the tip, so that the brush is connected to the hose and the extension pipe or the extension pipe and the suction head. Do not fall down to face the part. Therefore, even if the brush is lengthened, the opening area of the tip end opening portion is not reduced and the brush is not caught, and the scraping performance of dust and the like can be improved.

[0016]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 7 shows an electric vacuum cleaner 1 for home use, and the electric vacuum cleaner 1 includes a cleaner main body 2. The cleaner body 2 has a hose insertion port 3 which is connected to a dust collection chamber (not shown), and one end of a flexible hose 4 is detachably connected to the hose insertion port 3. .

A hard connecting pipe 5 is continuously provided at the other end of the hose 4. The connection pipe 5 is provided with a grip portion 6 that a person to be cleaned holds with a finger, and a control panel 7 having a power switch and a control switch for setting the strength of the suction force. The grip portion 6 and the control panel 7 are arranged adjacent to each other on the upper surface of the connecting pipe 5.

First and second extension pipes 10 and 11 are connected to the connecting pipe 5. Cylindrical fitting portions 10a and 11a are provided at the downstream ends of the suction of the extension pipes 10 and 11, respectively. The fitting portion 10a of the first extension pipe 10 is detachably fitted to the tip opening 12 on the suction upstream side of the connection pipe 5, and the fitting portion 11a of the second extension pipe 11 is The extension pipe 10 is detachably fitted into the tip end opening 13 on the upstream side of the suction.

A suction head 15 is detachably connected to the second extension pipe 11. The suction head 15 includes a box-shaped head body 16 that is elongated in the left-right direction. A suction port (not shown) is opened on the lower surface of the head body 16, and a cleaning blade 17 that is driven to rotate by a motor is arranged in the suction port. At the center of the rear part of the head body 16, a connecting pipe 18 connected to the suction port is supported so as to be vertically rotatable. A tubular fitting portion 18a is provided at the suction downstream end of the connecting pipe 18, and the fitting portion 18a is detachable from the tip opening 19 on the suction upstream side of the second extension pipe 11. It is designed to be fitted.

In the case of the present embodiment, a pair of terminal pins 20 project at the upper portions of the suction downstream ends of the extension pipes 10 and 11 and the connecting pipe 18 which face the fitting portions 10 a, 11 a and 18 a. It is set up. These terminal pins 20 are inserted into the end openings 12, 13, 19 of the extension pipes 12, 13 and the connecting pipe 5, respectively, when the fitting parts 10a, 11a, 18a are inserted into the end openings 12, 13, 19, respectively. It is adapted to be inserted into a pair of pin holes 21 (shown in FIGS. 2 and 3) embedded in the upper part. By this insertion, the motor for rotating the cleaning blade 17 and the power supply unit in the cleaner body 2 are electrically connected via the control panel 7, and the cleaning blade 17 is rotated by operating the control panel 7. It is controlled.

By the way, a cleaning tool 25 according to the present invention is attached to each of the downstream end of the connecting pipe 5 connected to the hose 4 and the downstream end of the first extension pipe 10. Since the cleaning tools 25 have the same structure, the cleaning tool 25 attached to the first extension tube 10 will be described as a representative in this embodiment.

As shown in FIGS. 1 and 4, a brush stand 26 made of synthetic resin is attached to the outer peripheral surface of the distal end portion of the extension tube 10. As shown in FIG. 2, the brush base 26 has a semi-cylindrical shape having a cross-sectional shape that follows the outer peripheral shape of the extension tube 10. The brush base 26 is mounted so as to cover the extension pipe 10 over a half circumference from below the extension pipe 10. At a position deviated to one end side along the axial direction thereof, a pair of circular fittings are fitted. The holes 27a and 27b are opened. The fitting holes 27a and 27b are opened at positions facing each other in the radial direction of the brush base 26. A flexible brush 28 is embedded in the opening edge portion on the other end side of the brush base 26. The brush 28 is provided over a half circumference without being continuous in the circumferential direction of the extension pipe 10, and projects in the axial direction from the opening edge portion of the brush stand 28.

On the outer peripheral surface of the extension pipe 10, a pair of columnar shaft portions 29 a and 29 b are provided so as to project. The shaft portions 29a and 29b are provided at positions close to the distal end opening portion 13 of the extension tube 10 so as to project in positions where they are opposed to each other in the radial direction. Therefore, as shown in FIG. 4, the brush base 26 is slightly spread so as to cover the outer peripheral surface of the extension tube 10 and the fitting holes 27a and 27b thereof are fitted to the shaft portions 29a and 29b, respectively. It is supported by the long pipe 10. The brush base 26 is configured to rotate in the direction of the tip opening 13 of the extension tube 10 with the shafts 29a and 29b as fulcrums. As a result of this rotation, the brush base 26 covers the lower surface of the extension tube 10 as shown in FIG. 1B and FIG. 10 is retracted onto the outer peripheral surface of the extension tube 10 and is covered with the upper surface of the extension tube 10 so that the brush 28 is moved from the distal end opening 13 of the extension tube 10 to the axially extended use position. It has become. In this case, a sliding resistance is provided between the shaft portions 29a, 29b and the fitting holes 27a, 27b to the extent that free rotation of the brush base 26 can be suppressed. The brush base 26 is held in the rotating posture when the is rotated to the storage position and the use position.

A grip 30 is provided on the outer peripheral surface of the brush base 26 so as to be hooked when the brush base 26 is rotated.

On the outer peripheral surface of the extension tube 10, a synthetic resin cover 35 that holds the brush base 26 in the storage position is attached. As shown in FIG. 4, the cover 35 has a semi-cylindrical shape having a cross-sectional shape that follows the outer peripheral shape of the extension tube 10. The cover 35 is mounted so as to cover the extension pipe 10 over a half circumference from below the extension pipe 10, and extends radially inward at opening edges of the cover 35 that face each other in the radial direction. The flange portions 36a and 36b are provided so as to project. Further, a pair of guide grooves 37a and 37b extending in the axial direction are formed on the outer peripheral surface of the extension tube 10. The guide grooves 37a, 37b are opened on the opening end face that is continuous with the tip opening 13 of the extension tube 10. The tip ends of the flanges 36a, 36b are slidable into the guide grooves 37a, 37b through this opening end. It is fitted.

Therefore, the cover 35 is supported so as to be slidable in the axial direction of the extension pipe 10, and by this slide, as shown in FIG. The brush 28 is moved from a closed position that covers the brush 28 from the outside to an open position that exposes the brush 28 away from the brush base 26.

An elastically deformable engaging piece 40 is integrally projectingly provided at an end portion of the cover 35 on the brush base 26 side. The engagement piece 40 extends toward the brush base 26 and has a hook portion 41 at its front end. Then, when the cover 35 is moved toward the closed position while the brush base 26 is rotated to the retracted position, the hook portion 41 at the tip of the engaging piece 40 is detachable from the handle 30 of the brush base 26. It is getting caught. By the engagement of the hook portion 40 and the handle 30, the brush base 26 is held at the storage position, the brush 28 is covered from the outside by the cover 35, and the cover 35 is held at the closed position so as not to slide. It is getting started.

Next, how to use the electric vacuum cleaner 1 having such a configuration will be described.

When cleaning a wide room such as a floor or a tatami mat, as shown in FIG. 7, the suction head 15 is connected to the hose 4 through the extension pipes 10 and 11, and the suction head 15 is connected to the hose 4. The head 15 is used to clean the surface to be cleaned such as the floor.

When cleaning a narrow surface 42 to be cleaned such as furniture, stairs or shelves, first, the second extension pipe 11 is pulled out from the first extension pipe 10. When the hook portion 41 of the engaging piece 40 is pressed to release the engagement between the hook portion 41 and the handle 30, the cover 35 is moved to the open position as shown in FIG. 1 (b). Slide the cleaning tool 25 toward and expose the brush 28 of the cleaning tool 25. When the cover 35 is slid to the open position, the holding of the brush base 26 is released at the same time. Therefore, the handle 30 of the brush base 26 is grasped with a fingertip, and the brush base 26 is turned upward with the shafts 29a and 29b as fulcrums. Then, the brush base 26 is moved to the use position. Due to this movement, as shown in FIG. 1C and FIG. 6, the cleaning tool 25 is positioned on the upper surface side of the extension tube 10 and has its brush 28 protruding from the tip end opening 13 of the extension tube 10. Held in.

From this, as shown in FIG. 8, the brush 28 of the cleaning tool 25 can scrape out dust and dirt on the narrow surface 42 to be swept, and the scraped dust and dirt can be extended. It is sucked through the tip opening 13 of the tube 10.

When the cleaning work by the cleaning tool 25 is completed, the grip 30 is grasped by the fingertips and the brush base 26 is rotated downward, and the brush base 26 is moved to the position shown in FIG. Move to the storage position. In this state, the cover 35 at the open position is slid to the closed position, and the hook portion 41 of the cover 35 is hooked on the handle 30. As a result, the brush base 26 is held in the storage position and the brush 28 is covered by the cover 35.

Further, as shown in FIG. 3, the cleaning tool 25 is located at an intermediate position between the storage position and the use position, that is, at the position where the brush base 26 faces the distal end opening 13 of the extension tube 10. When the rotation is stopped, the inner surface of the brush base 26 curved in an arc shape is opposed to the tip end opening 13 of the extension tube 10, and a suction gap S is formed therein. Since the gap S communicates with both ends of the brush base 26 along the axial direction, when the brush 28 protruding downward from the brush base 26 is brought into contact with the surface 43 to be cleaned, As shown by the arrow in FIG. 3, the tip end opening 13 sucks the outside air not only from the surface 43 to be cleaned but also from the front and the top of the extension tube 10.

Therefore, the suction force acting on the surface to be cleaned 43 becomes small, and for example, when cleaning a desk surface on which a document is placed or thin bedding, it is possible that the document or the bedding may stick to the brush 28. Can be prevented.

According to the first embodiment of the present invention as described above, the brush 28 for scraping out the dust is not continuous in the circumferential direction of the tip opening 13 of the extension tube 10, and the brush of the tip opening 13 is removed. Since the brush 28 is provided in a range extending over a half circumference, the portion that faces the brush 28 in the radial direction is open so as to be continuous with the tip opening 13. Therefore, even when the brush 28 is sucked into the tip opening 13 of the extension pipe 10 during operation of the cleaner body 2, the tip opening 13 is not blocked over the entire circumference. The opening area required for suction can be secured.

Moreover, since the brush 28 exists only in the half circumference of the tip end opening portion 13, it is difficult for the brush 28 to be entangled with lint or the like. Even if the lint is entangled, the portion of the brush base 26 that faces the brush 28 in the radial direction is open as it is, so by inserting your fingertip from this opening, the entangled lint, etc. Can be easily removed.

Particularly in the case of the present embodiment, when the cleaning tool 25 is not used, the brush 28 is covered with the cover 35, so that the brush 28, which is easily soiled, does not have to be exposed to the outside, and the brush 28 is threaded. This is hidden even with the scraps attached. Therefore, it is convenient in terms of appearance, and it is possible to prevent the lint and dust from falling off the brush 28, which is also sanitary.

Further, the brush base 26 has a use position where the brush 28 is projected from the tip end opening 13 of the extension pipe 10, and a storage position where the brush 28 is retracted to the outer peripheral surface of the extension pipe 10 beyond the tip end opening 13. Since the brush 28 is rotatably attached to the extension pipe 10, the brush 28 faces the fitting portion with the second extension pipe 11 when the brush base 26 is rotated to the retracted position. However, it does not fall into this fitting part.

From this, when the first extension pipe 10 and the second extension pipe 11 are connected, the brush 28 is not caught in the fitting portion between the tip end opening 13 and the fitting portion 11a. The brush 28 can be lengthened accordingly. Therefore, it is possible to improve the scraping performance of dust in a narrow place, and prevent the brush 28 from being cut and the workability of connecting the extension pipes 10 and 11 from being deteriorated due to biting, despite the lengthening of the brush 28. You can

Further, in the present embodiment, when the cleaning tool 25 is rotated to the use position, the brush base 26 covers the upper surface of the distal end portion of the extension tube 10, and the brush base 26 covers the periphery of the pin hole 21. When the tip opening 13 of the extension tube 10 is used as a suction port, the pin hole 21 does not come into contact with the surface 42 to be cleaned, and there is an advantage that the pin hole 21 can be prevented from being deformed or blocked.

The present invention is not limited to the first embodiment described above, and FIGS. 9 and 10 show a second embodiment of the present invention.

The second embodiment is different from the first embodiment in the mounting position of the cleaning tool 25 with respect to the extension pipe 10 and the connection pipe 5, and the other structure is the same as that of the first embodiment.

In the second embodiment, the cleaning tool 25 attached to the connecting pipe 5 will be described as a representative.

As shown in FIG. 9, the brush base 26 and the cover 35 are mounted so as to cover the connection pipe 5 from above the connection pipe 5 over a half circumference, and the brush base 26 and the cover 35 are attached. It is continuously located in front of the control panel 7. Then, when the brush base 26 is rotated toward the use position, the brush base 26 is located below the connecting pipe 5, and the tip opening 13 is located in front of the brush 28. ing.

According to the second embodiment having such a configuration, when the grip portion 6 of the connecting pipe 5 is gripped by hand, the brush 28 is located behind the tip opening portion 13 which serves as a suction port. For this reason, as shown in FIG. 10, when the lower surface of the shelf board 51 is looked up from below and is cleaned, dust attached to the lower surface of the shelf board 51 may be scraped by the brush 28 toward the tip opening 13. It is possible and the usability is improved.

In the above embodiment, the brush base is rotated with respect to the extension pipe or the connecting pipe. However, the present invention is not limited to this, and the brush base is linear in the axial direction of the extension pipe or the connecting pipe. You may make it move back and forth.

Further, in the case of this configuration, the brush base is not limited to the semi-cylindrical shape, but is formed in a tubular shape having a circular cross section, and the brush is partially provided at one location of the brush base, or of the brush base. It may be provided at a plurality of locations spaced apart in the circumferential direction.

[0049]

[Effect of device]

 According to the present invention described in detail above, even when the brush is sucked into the tip end opening of the extension pipe or the hose during operation of the cleaner body, the tip end opening is closed over the entire circumference. Nothing happens, and the opening area required for suction can be secured.

Moreover, it becomes difficult for the lint to be entangled with the brush, and even if the lint is entangled, the lint can be easily removed by inserting the fingertip or the like from the portion without the brush, which is hygiene. Target.

Further, when the brush base is moved to the retracted position, the brush is positioned on the outer circumference of the extension pipe or the hose, so that the brush faces the connecting portion of the hose or the extension pipe or the connection portion of the hose or the extension pipe. You don't fall into any part. For this reason, when connecting the extension pipe to the hose or suction head, the brush does not get caught in the opening at the tip of the extension pipe, and the brush is lengthened accordingly, which improves the scraping performance of dust in narrow spaces. It is possible to prevent the cutting of the brush and the deterioration of the workability of connecting the extension pipe and the hose due to the biting.

[Brief description of drawings]

FIG. 1A is a side view showing a state in which the cleaning tool is rotated to a storage position in the first embodiment of the present invention.
(B) is a side view showing a state where the cover is detached from the cleaning tool. (C) is a side view showing a state in which the cleaning tool is rotated to a use position.

FIG. 2 is a view seen from the direction of the line A in FIG.

FIG. 3 is a side view showing a state in which the cleaning tool is rotated to an intermediate position between a storage position and a use position, with a partial cross section.

FIG. 4 is an exploded perspective view showing an attachment structure of a cleaning tool and a cover with respect to an extension tube.

FIG. 5 is a perspective view showing a state in which the cleaning tool is rotated to a storage position.

FIG. 6 is a side view showing a state in which the cleaning tool is rotated to a use position.

FIG. 7 is a perspective view of the entire electric vacuum cleaner.

FIG. 8 is a perspective view showing a state in which cleaning is performed using a cleaning tool attached to the distal end portion of the extension tube.

FIG. 9A is a side view showing a state in which the cleaning tool is rotated to a storage position in the second embodiment of the present invention.
(B) is a side view showing a state in which the cleaning tool is rotated to a use position.

FIG. 10 is a perspective view showing a state in which the cleaning tool attached to the connection pipe of the hose is used for cleaning.

[Explanation of symbols]

2 ... Vacuum cleaner body, 4 ... Hose, 1
0, 11 ... Extension tube, 12, 13 ... Tip opening, 15 ... Suction head, 26 ... Brush base, 28 ... Brush,
42 ... the surface to be cleaned.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuya Mori 69, Yanagi-cho, Sachi-ku, Kawasaki-shi, Kanagawa Toshiba Product Testing Center

Claims (1)

[Scope of utility model registration request] 1. A hose connected to the vacuum cleaner body, an extension pipe detachably connected to the hose and connecting the hose to the suction head, and at least one of the extension pipe and the hose on the suction upstream side. The brush base is attached to the tip portion, and the brush protruding from the brush base and scratches the surface to be cleaned is provided, and the brush base sucks the brush into the hose or the extension pipe, and the tip opening on the upstream side. The brush is mounted movably between a use position in which the brush is projected from the portion and a storage position in which the brush is retracted on the outer circumference of the hose or the extension tube rather than the tip opening portion, and the brush is An electric vacuum cleaner, which is partially provided without being continuous in the circumferential direction of the tip opening.