JP3505888B2 - Electric vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner having an improved grip for operating a floor suction tool, and more particularly to a gripping tool caused by a collision force generated by dust or the like sucked from the floor suction tool. The present invention relates to an electric vacuum cleaner that prevents damage and noise from being generated in the bent pipe part.

[0002]

2. Description of the Related Art FIG. 8 shows, for example, JP-A-63-42367.
It is a longitudinal cross-sectional view which shows an example of the grip of the conventional vacuum cleaner disclosed by the publication. As shown in the figure, the bent pipe 1 formed in a substantially V shape has a bent portion 2 on the upstream side (tip side).
And the extension pipe support portion 3, the straight pipe portion 4 and the hose support portion 5 on the downstream side (rear end side), and the lower grip portion 1a having the grip space portion on the upper surface side, which are integrally formed. One end of the bent pipe 1 is attached to the cleaner body (not shown) on the hose support 5 and the extension pipe support 3 is attached to the floor suction tool (not shown). The extension pipes 7 connected to each other are respectively connected. Further, a grip grip upper cover 8 is attached to the upper surface of the lower grip 1a, and is fixed to the upper surface of the bent pipe 1 by a screw 9 to form a grip 10. The bent pipe 1 and the grip 10 hold the grip. 11 are configured.

In the electric vacuum cleaner as described above, dust and the like sucked by the floor suction tool move linearly at a high speed in the extension pipe 7, but in the vicinity of the bent portion 2 of the bent pipe 1, the folded pipe 1 is folded. It collides with the inner wall of the upper surface of the curved portion 2 to reduce its speed and at the same time changes its direction, moves in the straight pipe portion 4, passes through the hose 6, and is sucked into the cleaner body.

[0004]

In the conventional vacuum cleaner configured as described above, when the dust or the like to be sucked is nails, thumbtack, pebbles or the like having a relatively large mass, these are bent pipes 1. It collides with the bent portion 2 and causes an abnormal sound or damages the inner wall. In the vicinity of the bent portion 2,
The air flow containing dust and the like accelerates, friction with the inner wall is generated, and static electricity or the like is easily generated. If the human body comes into contact with the bent portion 2 while being charged, there is a danger of discharge. Further, when operating the floor suction tool, forces are exerted on the handle 10 from various directions, the grip upper cover 8 is deformed, and an abnormal sound such as a squeak noise is easily generated. It is necessary to increase the number of screws 9, welding, bonding, etc.,
There are problems such as difficulty in assembling and complicated jigs and tools.

The present invention has been made in order to solve the above problems, and does not cause abnormal noise or damage to the inner wall in the vicinity of a bent portion of a bent pipe, and also prevents generation of static electricity or the like. It is an object of the present invention to obtain an electric vacuum cleaner that can hold down and further eliminate screws to suppress squeaking noises of handles.

[0006]

An electric vacuum cleaner according to the present invention is configured as follows. (1) A flexible hose detachably connected to the cleaner body, an extension pipe detachably connected to the floor suction tool, one end detachably connected to the extension pipe, and the other end detachably connected to the extension pipe. A grip having a substantially V-shaped bent pipe and a substantially V-shaped handle provided on the bent pipe, the handle is formed hollow, and the upstream end of the handle is bent at the bent portion of the bent pipe. A grip is constructed by connecting to the neighborhood and integrally forming with the bent pipe, and closing the downstream end of the handle to connect the handle and the bent pipe to form a grip. It is configured so as to move away from the side straight pipe portion.

(2) A flexible hose that is detachably connected to the cleaner body, an extension pipe that is detachably connected to the floor suction tool, and one end is detachably attached to the hose and the other end is detachably attached to the extension pipe. A grip having a substantially V-shaped bent pipe connected to the grip and a grip having a substantially inverted U-shape provided on the bent pipe, wherein the grip is formed hollow and the upstream end of the grip is formed. A bent portion of the bent pipe, and a downstream end of the handle connected to the downstream straight pipe portion of the bent pipe to integrally form the bent pipe and bend the handle. A grip is constructed by communicating pipes, and the opening area of the downstream end of the handle connected near the downstream straight pipe portion of the bent pipe is connected to the upstream end of the handle connected near the bent portion of the bent pipe. Greater than or equal to the opening area of It is composed.

(3) In the vacuum cleaner of the above (1) or (2), the handle is filled with a soft member. (4) In the electric vacuum cleaner described in (3) above, an openable and closable opening is provided in the handle, and a soft member is inserted into the handle through the opening.

(5) In the vacuum cleaner according to any one of the above (1) to (4), the bending pipe and the extension pipe of the grip are integrally formed.

[0010]

[0011]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1 FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a main part of FIG. 1, and FIG. 3 is an AA sectional view of FIG. Figure 1
In the figure, 11 is a grip made up of the bent pipe 1 and the handle 10, and 12 is a cleaner body having a built-in electric blower,
Reference numeral 13 is a floor suction tool. Reference numeral 6 denotes a bendable hose, one end of which is detachably connected to the cleaner body 12 and the other end of which is detachably connected to the hose support portion 5 of the bend pipe 1.
Reference numeral 7 denotes an extension pipe, one end of which is detachably connected to the floor suction tool 13 and the other end of which is detachably connected to the extension pipe support portion 3 of the bent pipe 1.

Next, referring to FIGS. 2 and 3, the bent pipe 1
The structure of the grip 11 including the handle 10 and the handle 10 will be described in detail. As shown in the figure, the bent pipe 1 is formed in a substantially V-shape, and the bent portion 2 and an extension pipe support that is positioned upstream of the bent portion 2 and has an extension pipe 7 detachably fitted and supported therein. It is composed of a portion 3 and a straight pipe portion 4 located on the downstream side and detachably connected to a hose 6 by a hose supporting portion 5. Further, the handle 10 is formed in a substantially V-shaped hollow shape,
The upstream side is connected to the upper surface near the bent portion 2 of the bent pipe 1, and the downstream side is closed. By blow molding, the first hollow passage 14a on the upstream side (the bent portion 2 side) of the handle 10 communicates with the first hollow passage 15a of the extension pipe support portion 3 of the bent pipe 1 in a substantially straight line. It is integrally molded.

Further, the closed side of the handle 10 and the bent pipe 1
A grip space 16 for gripping the handle 10 and supporting it from below is provided between the upper surface of the straight pipe part 4 and the straight pipe part 4. In addition, the first and second hollow passages 14 a, 1 of the handle 10
4b may be arranged so as to be farther from the straight pipe portion 4 of the bent pipe 1 as it goes to the closed portion side, that is, at a position higher than the bent portion 2.

The operation of the present embodiment configured as described above will be described. First, when input to the cleaner body 12, dust and the like scattered on the floor are sucked together with air by the floor suction tool 13, and pass through the extension tube 7 and the hose 6 from the grip 11 as shown by a solid arrow. From there, it enters the cleaner body 12 and is cleaned and exhausted. At this time, a part of the air flow containing dust or the like that passes through the extension pipe 7 linearly at a high speed is not completely bent at the bent portion 2 but its inertia force causes the first hollow passage 15a of the extension pipe 3 to move. The first hollow passage 14a of the handle 10 formed in a substantially straight line penetrates as shown by a broken arrow. However, this inertial force weakens at the same time when it enters the first hollow passage 14a of the handle 10, and the speed of dust and the like suddenly decreases,
The handle 10 is stopped with the colliding force against the inner wall weakened. Thereafter, dust and the like fall from the bent portion 2 into the bent pipe 1 due to its own weight, movement of the grip 11, etc., and the cleaner body 1
2 is sucked in the direction indicated by the solid arrow.

According to this embodiment, the grip 11 is integrally molded with the bent pipe 1 and the handle 10.
Since the handle 10 is formed in a hollow shape and communicated with the bent pipe 1, the squeak noise of the handle 10 can be eliminated when the electric vacuum cleaner is used, and the handle 10 can serve as a buffer chamber for dust and the like sucked. Of the dust and the like, relatively small mass of cotton dust, bristles and the like are accumulated in the first and second hollow passages 14a and 14b of the handle 10, and a large mass of nails or the like entering by the inertial force. By playing the role of a cushion for a thumbtack or the like, the inner wall of the handle 10 can be protected and the generation of noise due to a collision can be prevented. Further, since the bent pipe 1 and the handle 10 are integrally formed, the assembling work is omitted, and screws or the like for assembling are not required, so that the cost can be reduced. Furthermore, when the closed portion side of the handle 10 is gradually moved away from the straight pipe portion 4 of the bent pipe 1, the dust that has entered the first and second hollow passages 14a and 14b of the handle 10 is inclined due to its inclination. Can quickly drop in the direction of the bent pipe 1.

Embodiment 2 FIG. 4 is a vertical sectional view of a second embodiment of the present invention. In the present embodiment, the hollow handle 10 shown in the first embodiment is filled with a breathable soft member such as urethane. Reference numeral 17 denotes a soft member that is filled in the hollow and substantially V-shaped handle 10 and is filled from near the upper surface of the bent portion 2 of the bent pipe 1 to near the closed end portion on the downstream side of the handle 10. According to the present embodiment configured as described above, a nail, a thumbtack, or the like that has advanced in the direction of the handle 10 due to the inertial force is bent by the bending portion 2.
Although it collides with the soft member 17 filled in the handle 10 in the vicinity, the soft member 17 acts as a cushion against dust here. Therefore, by this soft member 17,
Since the sucked dust and the like surely weakens the speed thereof, the soft member 17 protects the inner wall of the handle 10 to prevent damage, and at the same time, it is possible to prevent noise due to collision.

Embodiment 3 FIG. 5 is a vertical sectional view of a third embodiment of the present invention. In this embodiment, as shown in the second embodiment, the hollow handle 10 is filled with a soft member, and an opening is provided at the downstream end of the handle 10. Reference numeral 17 is a soft member filled in a hollow and substantially V-shaped handle 10 for bending the bent pipe 1
It is filled from near the upper surface of the bent portion 2 to near the downstream end of the handle 10. Reference numeral 18 is an opening for inserting the soft member 17 provided at the downstream end of the handle 10 into the hollow portion of the handle 10, and 19 is a cap detachably attached to the opening 18.

According to the present embodiment configured as described above, the soft member 17 is inserted into the hollow portion of the grip 10 through the opening 18 provided at the downstream end of the grip 10, and then the opening is opened by the cap 19. 18 is sealed and the soft member 1
7 is filled in the hollow portion. By doing so, the nails, thumbtacks, etc. that have advanced in the direction of the handle 10 due to the inertial force collide with the soft member 17 in the handle 10 near the bent portion 2, but here the soft member 1
7 acts as a cushion against dust. Therefore, the soft member 17 can protect the inner wall of the handle 10 and prevent the generation of noise due to the collision of nails or the like. Further, the provision of the opening 18 improves the assemblability of the soft member 17, and the cap 19 is detachably provided on the handle 10 to improve serviceability such as replacement of the soft member 17.

Embodiment 4 FIG. 6 is a side view of the fourth embodiment of the present invention. In the first embodiment, the extension pipe 7 is detachably provided at the end of the grip 11, but in the present embodiment, the grip and the extension pipe are integrally formed. Reference numeral 11a denotes an extension grip integrally formed by blow molding with a grip part and an extension pipe part.
0, the bent pipe portion and the extension pipe portion are integrally connected. Then, the downstream end of the extension grip 11a is connected to the hose 6, and the upstream end is detachably connected to the floor suction tool 13. Therefore, according to the present embodiment, the handle 10
It is possible to protect the inner wall of the device and to prevent noise from being generated by a collision with nails, etc., and it becomes unnecessary to attach and detach the bent pipe portion and the extension pipe portion, and neither is separated during use.

Embodiment 5 FIG. 7 is a vertical sectional view of a fifth embodiment of the present invention. Since the entire structure of the electric vacuum cleaner is substantially the same as that shown in FIG. 1, the description thereof will be omitted. 11 is a bent pipe 1
And a grip 10, and 2 is a bent pipe 1
The bent portions 3, 3 are extension pipe support portions provided on the upstream side of the bent pipe 1, and 4 are straight pipe portions provided on the downstream side of the bent pipe 1. Reference numeral 16 is a grip space portion provided between the handle 10 and the bent pipe 1.

Next, the structure of the handle 10 will be described in detail. The handle 10 is hollow and has a substantially inverted U shape, and both ends thereof are integrally formed near the upper surface of the bent pipe 1 by boule molding. An upstream opening 20 is provided on the upstream side of the handle 10 and connected to the vicinity of the bent portion 2 of the bent pipe 1, and a downstream opening 21 is provided on the downstream side of the handle 10 to connect the bent pipe 1 to the downstream side. It is connected to the upper surface of the straight pipe portion 4 and communicates with each other by a bypass passage 22 provided in the handle 10 so that dust or the like sucked together with air is bent at the bent portion 2 to the direction of the straight pipe portion 4 and the bypass passage 22. It is configured so as to branch into a direction and flow. The downstream opening 21
The opening area of is formed to be equal to or larger than the opening area of the upstream side opening 20 to prevent the sucked dust and the like from being caught in the downstream side opening 21.

The operation of the present embodiment configured as described above will be described. The air flow containing dust and the like sucked by the floor suction tool 13 passes through the extension pipe 7 to reach the first hollow passage 15a of the extension pipe support portion 3 of the bending pipe 1, and is directly in the vicinity of the bending portion 2. The pipe portion 4 is branched in the second hollow passage 15b direction and the bypass passage 22 direction, and a part of the branched air flow passes from the upstream opening portion 20 through the bypass passage 22 to the downstream opening portion 21. On the other hand, the other air flow flows toward the second hollow passage 15b of the straight pipe portion 4 of the bent pipe 1 in a state where the air passing through the bent portion 2 is decelerated, and the bypass passage 2
It merges with the branch flow that has flowed to the downstream opening 21 through 2 and flows toward the hose 6.

Since the upstream opening 20 of the handle 10 is provided in the vicinity of the bent portion 2 of the bent pipe 1 as described above, the dust and the like that have been sucked into the straight pipe portion 4 toward the second hollow passage 15b and the bypass passage. The passage speed can be reduced by branching in 22 directions, so that the velocity of the air flow passing near the bent portion 2 is reduced to reduce noise, and the inner wall near the bent portion 2 is not affected by the air flow. The static electricity generated by rubbing can be suppressed. In particular, when a pushpin, a nail, a small stone, or the like having a relatively large mass among the sucked dust and the like collides with the inner wall of the second hollow passage 15b or the bypass passage 22, the force is small, so that the inner wall is not damaged. Can be prevented. Furthermore, since the opening area of the downstream opening 21 of the bypass passage 22 is formed to be equal to or larger than the opening area of the upstream opening 20, dust or the like that has passed through the upstream opening 20 will not pass through. The second part of the straight pipe section 4
It is possible to reliably flow out in the direction of the hollow passage 15b.

Embodiment 6 In this embodiment, as shown in Embodiment 2, the bypass passage 22 from the upstream opening 20 to the downstream opening 21 of the handle 10 in the fifth embodiment (FIG. 7) is used. It is filled with a soft member (not shown). According to the present embodiment configured as described above, a nail, a thumbtack, or the like that has advanced in the direction of the bypass passage 22 of the handle 10 due to inertial force collides with a soft member in the handle 10, but the soft member is changed to a nail or the like. On the other hand, it plays the role of a cushion. Therefore, the soft member can protect the inner wall of the handle 10 and prevent the generation of noise due to a collision.

Embodiment 7 In this embodiment, an opening for filling the soft member is provided at an arbitrary position of the handle 10 in the sixth embodiment (not shown). Therefore, the soft member is the inner wall of the handle. It is possible to prevent the occurrence of noise due to a collision and to improve the assemblability and maintainability of the soft member by providing the opening.

[0026]

As is apparent from the above description, the electric vacuum cleaner according to the present invention can obtain the following effects. (1) A flexible hose that is detachably connected to the cleaner body, an extension pipe that is detachably connected to the floor suction tool, and one end is detachably attached to the hose and the other end is detachably attached to the extension pipe. A grip having a substantially V-shaped bent pipe connected to the bent pipe and a substantially V-shaped handle provided on the bent pipe, wherein the handle is formed hollow and the upstream end of the handle is provided. The grip is connected to the vicinity of the bent portion of the bent pipe to be integrally molded with the bent pipe, and the downstream end of the handle is closed so that the handle and the bent pipe communicate with each other to form a grip. Since it is configured to move away from the straight pipe part on the downstream side of the bent pipe as it goes to the side, it is possible to eliminate the squeak noise of the handle when using the electric vacuum cleaner, and to store the buffer chamber against dust and the like sucked by the handle. Play a role of in dust etc. However, relatively small mass of cotton dust, hair, etc. accumulates inside the handle and acts as a cushion against nails, thumbtack, etc. that have large mass entering due to inertial force, protecting the inner wall of the handle and preventing noise from collision. Occurrence can be prevented. Further, since the bent pipe and the handle are integrally formed, the assembling work is omitted, and the screws for assembling are not required, so that the cost can be reduced. Moreover, the dust that has entered the handle can be quickly dropped in the direction of the bent pipe due to the inclination.

(2) A flexible hose detachably connected to the cleaner body, an extension pipe detachably connected to the floor suction tool, one end to the hose and the other end to the extension pipe. The grip comprises a substantially V-shaped bent pipe that is detachably connected and a grip that is provided on the bent pipe and that has a substantially inverted U-shape. The grip is formed hollow and the grip is upstream. The side end is connected to the bent part of the bent pipe and the downstream end of the handle is connected to the downstream straight pipe part of the bent pipe to integrally mold the bent pipe and the handle And a bent pipe are connected to form a grip, and the opening area of the downstream end of the handle connected near the downstream straight pipe portion of the bent pipe is upstream of the handle connected near the bent portion of the bent pipe. Same as or larger than the opening area of the end Since it is also made large, it is possible to eliminate the squeaking noise of the handle when using the vacuum cleaner, and also the cushion plays a role of a buffer chamber for the dust that is sucked, and the cotton that has a relatively small mass among the dust. Dust, hair, etc. are accumulated in the handle and serve as a cushion for nails and thumbtacks that intrude due to inertial force to protect the inner wall of the handle and prevent noise from collision. . Further, since the bent pipe and the handle are integrally formed, the assembling work is omitted, and the screws for assembling are not required, so that the cost can be reduced. Also,
The suctioned dust and the like can be branched in the bending pipe direction and the gripping direction to reduce the passage speed, and therefore, the velocity of the air flow passing near the bending portion of the bending pipe is reduced to reduce noise, In addition, static electricity generated by friction of the inner wall near the bent portion with the air flow can be suppressed. In particular, since the force of a thumbtack, a nail, a small stone, or the like having a relatively large mass among the sucked dust and the like to collide with the inner wall of the bent pipe or the handle becomes small, damage to the inner wall can be prevented. Furthermore, the dust that has passed through the upstream opening of the handle does not get clogged in the downstream opening, and can be reliably discharged in the straight pipe direction.

(3) In the vacuum cleaner according to the above 1 or 2, since the handle is filled with the soft member, the nails, thumbtack, etc. that have advanced in the direction of the handle due to the inertial force are filled in the handle near the bent portion. Although it collides with the soft member, the soft member serves as a cushion against dust and the like. Therefore, the speed of the sucked dust and the like is surely weakened by the soft member, so that the soft member protects the inner wall of the handle to prevent the damage, and the noise due to the collision can be prevented.

(4) The handle is provided with an opening that can be opened and closed.
Since the soft member is inserted into the handle through the opening, the assemblability of the soft member is improved, and the serviceability such as replacement of the soft member is improved.

(5) Since the bent pipe and the extension pipe of the grip are integrally formed as described above, the work of attaching and detaching the bent pipe and the extension pipe is unnecessary, and the both are not separated during use. .

[0031]

[0032]

[0033]

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of a main part of FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a vertical cross-sectional view of a main part of a second embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view of a main part of a third embodiment of the present invention.

FIG. 6 is a side view of a main part of a fourth embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of a main part of a fifth embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view showing an example of a grip of a conventional electric vacuum cleaner.

[Explanation of symbols]

1 bent pipe, 2 bent part, 4 straight pipe part, 6 hose, 7 extension pipe, 10 grip, 11 grip, 11a extension grip, 12 vacuum cleaner body, 13 floor suction device, 17
Soft member, 18 opening, 20 upstream opening, 21
Downstream opening.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Yukai 1728 Omaeda, Omaeda, Hanazono-cho, Saitama Prefecture 1 Mitsubishi Electric Home Equipment Co., Ltd. (56) Reference JP-A-5-115395 (JP, A) HEI 5-161580 (JP, A) JP 61-125318 (JP, A) JP 53-9062 (JP, A) Actually opened 58-88953 (JP, U) Actually opened 63-30941 (JP , U) Actual development Sho 64-31063 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47L 9/24

Claims (5)

(57) [Claims] 1. A bend which is detachably connected to a cleaner body.
A flexible hose and an extension that is detachably connected to the floor suction tool.
A long pipe, one end to the hose and the other end to the extension pipe.
And a substantially V-shaped bent pipe that is detachably connected
A grip made up of a roughly V-shaped handle on a bent pipe
The handle is formed hollow and the upstream end of the handle is bent.
Connect it near the bent part of the bent pipe and connect it with the bent pipe.
While shaping the body, close the downstream end of the handle to
The grip is constructed by connecting the hand and the bent pipe, and the grip is
Is it a straight pipe part on the downstream side of the bent pipe as it goes to the downstream side?
Electric cleaning characterized by being configured to move away from
Machine. 2. A bend which is detachably connected to the cleaner body.
A flexible hose and an extension that is detachably connected to the floor suction tool.
A long pipe, one end to the hose and the other end to the extension pipe.
And a substantially V-shaped bent pipe that is detachably connected
A grip made up of an almost inverted U-shaped handle provided on a bent pipe
The handle is formed hollow and the upstream end of the handle is bent.
Connect near the bent part of the bent pipe, and under the handle
Connect the flow-side end near the straight pipe part on the downstream side of the bent pipe.
To integrally mold the bent pipe and
The bent pipe is connected to form a grip, and the bent pipe is
Open the downstream end of the handle connected near the straight pipe section on the downstream side of the handle.
Handle with the mouth area connected near the bent part of the bent pipe
Same as or larger than the opening area of the upstream end
An electric vacuum cleaner characterized by being configured. 3. A handle is filled with a soft member.
The vacuum cleaner according to claim 1 or 2. 4. A handle is provided with an opening / closing opening, and the opening is provided.
The soft member is inserted into the handle from the section
The electric vacuum cleaner according to claim 3, wherein: 5. The bent pipe and the extension pipe of the grip are
5. The body according to claim 1, wherein the body is constructed.
Vacuum cleaner as described in.