JP2010094246A - Suction opening body of electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction opening body of an electric vacuum cleaner which can reduce wind noise that is generated at the suction opening. <P>SOLUTION: The suction opening body 6 is provided with a suction opening 12 which faces a surface to be cleaned, a suction air trunk 13 which is connected to the suction opening 12, a brush storage 14 adjacent to the suction opening 12, a rotating brush 15 which is placed inside the brush storage 14 in a rotatable manner, and a connecting hole 16 which connects the brush storage 14 and the suction air trunk 13. The brush storage 14 is equipped with an opening 14a which faces the surface to be cleaned. Such suction opening body 6 reduces wind volume which passes through the suction opening 12 since a part of the air around and below the suction opening 12 enters the brush storage 14 from the opening 14a and then enters the suction air trunk 13 through the connecting hole 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a suction port body of a vacuum cleaner such as a canister type or an upright type.

  2. Description of the Related Art Conventionally, a canister-type vacuum cleaner widely used in ordinary homes includes a vacuum cleaner body on which an electric blower is mounted, and a suction port body that sucks, for example, dust on the floor by the suction force of the electric blower.

  And what was described in FIG. 1 of Unexamined-Japanese-Patent No. 2000-37327 (patent document 1) is known as an inlet of a canister-type vacuum cleaner.

  The suction body includes a suction port body having a suction port on a floor side surface, that is, a lower surface, and a connection pipe connected to a rear portion of the suction port body.

  And the said suction inlet main body has the suction air path connected to a suction inlet, and the brush storage chamber formed so that it might adjoin to a suction inlet.

  A rotating brush is rotatably arranged in the brush storage chamber, and dust on the floor is lifted up by this rotating brush and sent to the suction port.

By the way, in the above-described conventional suction port body, the suction port has a horizontal length that is perpendicular to the rotation axis of the rotary brush, which is much shorter than the length in the direction parallel to the rotation axis of the rotary brush. ing. For this reason, when air passed through the suction port, there was a problem that a large wind noise was generated at the suction port.
JP 2000-37327 A (FIGS. 1 and 2)

  Then, the subject of this invention is providing the suction inlet body of the vacuum cleaner which can reduce the wind noise produced in a suction inlet.

In order to solve the above problems, the suction port of the vacuum cleaner of the present invention is
A suction port facing the surface to be cleaned;
A suction air passage communicating with the suction port;
A brush storage chamber formed adjacent to the suction port and having an opening facing the surface to be cleaned;
A rotating brush rotatably arranged in the brush storage chamber;
A communication hole for communicating the brush storage chamber and the suction air passage with each other is provided.

  According to the suction port body of the vacuum cleaner having the above structure, the suction port and the air under the periphery of the suction port are sucked into the suction port together with dust on the surface to be cleaned and flow into the suction air passage. At this time, since the brush storage chamber and the suction air passage communicate with each other through the communication hole, a part of the air under the suction port enters the brush storage chamber from the opening, and then the communication hole. Through the suction airway.

  Therefore, the amount of air passing through the suction port is reduced, and wind noise generated at the suction port can be reduced.

In the suction port body of the vacuum cleaner of one embodiment,
The suction air passage has a cylindrical portion on the outlet side,
The communication hole overlaps the inside of the cylindrical part when the communication hole is projected in the axial direction of the cylindrical part.

  According to the suction port body of the vacuum cleaner of the above embodiment, the communication hole overlaps the inside of the cylindrical portion when the communication hole is projected in the axial direction of the cylindrical portion, so air is sucked from the communication hole. It becomes easy.

In the suction port body of the vacuum cleaner of one embodiment,
The airflow blown out from the communication hole is inclined with respect to the axial direction of the cylindrical portion so that the airflow sucked from the suction port is directed in the axial direction of the cylindrical portion.

  According to the suction port body of the vacuum cleaner of the above embodiment, the airflow blown out from the communication hole is such that the airflow sucked from the suction port is directed in the axial direction of the tubular portion. Therefore, when the airflow blown out from the communication hole flows into the suction air passage, the airflow sucked from the suction port is directed in the axial direction of the cylindrical portion.

  Therefore, it is possible to reduce noise generated when the airflow sucked from the suction port hits the inner wall of the cylindrical portion.

  According to the suction port body of the vacuum cleaner of the present invention, the brush storage chamber and the suction air passage communicate with each other through the communication hole, so that a part of the air around the suction port bypasses the suction port. Then, since it enters the suction air passage through the communication hole, the amount of air passing through the suction port is reduced, and the wind noise generated at the suction port can be reduced.

  Hereinafter, the suction port body of the vacuum cleaner of this invention is demonstrated in detail by embodiment of illustration.

  FIG. 1 is a schematic perspective view of a canister type vacuum cleaner including a suction port body 6 according to an embodiment of the present invention.

  The vacuum cleaner includes a vacuum cleaner body 1, a highly rigid body-side pipe 2 that can be attached to and detached from the cleaner body 1, and a flexible hose 3 having one end connected to the body-side pipe 2. A high-rigid hand side pipe 4 to which the other end of the hose 3 is connected, and a high-rigid extension pipe 5 that has one end detachable from the hand-side pipe 4 and is extendable, A detachable T-shaped suction port body 6 is provided at the other end of the extension pipe 5.

  The vacuum cleaner body 1 is equipped with an electric blower 7 and a cyclone dust collector 8. Although not shown, the electric blower 7 includes a suction fan and a motor that rotationally drives the suction fan. When the suction fan is rotationally driven, the air between the suction port body 6 and the surface to be cleaned is sucked into the suction port body 6 and then flows through the extension pipe 5, the hose 3, and the main body side pipe 2. And flows into the cyclone dust collector 8.

  The cyclone dust collector 8 centrifuges the air flowing into the cyclone dust collector 8 and the dust contained in the air. While the dust remains in the cyclone dust collector 8, the air from which the dust has been removed sequentially passes through a mesh filter and a high efficiency particulate air (HEPA) filter (not shown), and then comes out of the cleaner body 1.

  A handle 4 a is formed on the proximal side pipe 4. The user grasps the handle 4a and moves the suction port body 6 with respect to the surface to be cleaned. Moreover, although not shown in figure, the said handle 4a part has the light emission part which shows the switch for controlling the electric blower 7, and the operation condition of the electric blower 7. FIG.

  FIG. 2 is a perspective view of the suction port body 6 with the rotating brush 15 removed as viewed obliquely from below. FIG. 3 is a vertical sectional view of the suction port body 6. In the following description, the “left-right direction” corresponds to a direction parallel to the rotation axis of the rotary brush 15, and the front-rear direction corresponds to a horizontal direction perpendicular to the rotation axis of the rotary brush 15.

  As shown in FIG. 3, the suction port body 6 is connected to the suction port main body 9, a relay pipe 10 extending rearward from the center in the left-right direction of the rear portion of the suction port main body 9, and the relay pipe 10. Connecting pipe 11.

  The suction port body 9 is formed in front of the suction port 12 facing the surface to be cleaned such as a floor to be cleaned, a suction air passage 13 communicating with the suction port 12, and the suction port 12. A brush storage chamber 14 adjacent to the suction port 12, a rotating brush 15 rotatably disposed in the brush storage chamber 14, and a communication hole 16 that allows the brush storage chamber 14 and the suction air passage 13 to communicate with each other. Yes.

  As shown in FIG. 2, the suction port 12 is elongated in the left-right direction of the suction port body 9. The central portion of the suction port 12 in the left-right direction is connected to the suction air passage 13.

  As shown in FIG. 3, the suction air passage 13 includes a cylindrical portion 13a formed on the outlet side and a guide portion 13b formed on the inlet side. The cylindrical portion 13a is an example of a cylindrical portion.

  The guide part 13b guides the air that has passed through the suction port 12 to the cylindrical part 13a. The guide portion 13b is formed so that the inner space becomes smaller as it approaches the cylindrical portion 13a from the suction port 12.

  The brush storage chamber 14 has an opening 14a that faces the surface to be cleaned, and a wall 14b that has a substantially arc shape in a vertical section. The wall 14 b extends from between the space in the brush storage chamber 14 and the space in the relay chamber 17 to between the space in the brush storage chamber 14 and the space in the suction port 12.

  The rotating brush 15 includes a shaft portion 15a and three brush portions 15b, 15c, and 15d that are spirally attached to the outer peripheral portion of the shaft portion 15a. The motor (see FIG. (Not shown). The brush portions 15b, 15c, and 15d have different shapes and functions.

  The communication hole 16 is a hole that extends in the left-right direction and penetrates the wall 14 b of the brush storage chamber 14. Further, the communication hole 16 is formed at a position that is lowered from the central axis L1 of the cylindrical portion 13a by about 1/4 of the inner diameter of the cylindrical portion 13a. As shown in FIGS. 2 to 4, the communication hole 16 overlaps the inside of the cylindrical portion 13 a when the communication hole 16 is projected in the axial direction of the cylindrical portion 13 a. Further, the length of the communication hole 16 in the left-right direction is longer than the inner diameter of the cylindrical portion 13a.

  The airflow that blows out from the communication hole 16 toward the suction air passage 13 is relative to the axial direction of the cylindrical portion 13a so that the airflow sucked into the suction air passage 13 from the suction port 12 is directed in the axial direction of the cylindrical portion 13a. Tilt. That is, in the vertical cross section including the central axis L1 of the cylindrical portion 13a, the angle formed by the central axis L1 of the cylindrical portion 13a and the direction in which the airflow is directed from the suction port 12 toward the suction air passage 13 (the direction of the arrow A2) The communication port 16 is provided so that the angle formed by the central axis L1 of the cylindrical portion 13a and the direction in which the airflow is directed from the communication hole 16 toward the suction air passage 13 (the direction of the arrow A1) becomes smaller.

  The relay pipe 10 relays the air in the suction air passage 13 to the connection pipe 11. That is, the air in the suction air passage 13 flows into the connection pipe 11 through the relay pipe 10. Such air relay is performed even if the central axis L2 of the connecting pipe 11 is horizontal with respect to the horizontal plane or inclined with respect to the horizontal plane.

  The connection pipe 11 is connected to the suction port body 9 so as to communicate with the suction port 12 and the suction air passage 13. Since one end of the connection pipe 11 is rotatably supported by the relay pipe 10, the connection pipe 11 is rotated around a rotation axis P (an axis extending in a direction perpendicular to the drawing of FIG. 3). The central axis L2 of the connecting pipe 11 can be tilted with respect to the horizontal plane by moving. The other end of the connection pipe 11 is detachably formed on the other end of the extension pipe 5.

  Further, the connecting pipe 11 includes a front cover 18 and a rear cover 19 which are bulged in a convex spherical shape around a pivot point P at the outer ends of the front and rear parts of the connecting pipe 11 that are received by the relay pipe 10. Is attached.

  In FIG. 2, 20 is a wheel mounting recess for mounting a wheel (not shown), and 21 is a wheel mounting step for mounting a wheel (not shown).

  According to the vacuum cleaner having the above-described configuration, when the user operates the switch on the handle 4a and the suction fan of the electric blower 7 is driven to rotate, the air in the suction port 12 and the surrounding area is dust on the surface to be cleaned. At the same time, it is sucked into the suction port 12 and flows into the suction air passage 13. At this time, a part of the air under the suction port 12 enters the brush storage chamber 14 through the opening 14 a and blows out from the communication hole 16 toward the suction air passage 13.

  Therefore, the amount of air passing through the suction port 12 is reduced, and wind noise generated at the suction port 12 can be reduced.

  Further, since the communication hole 16 is formed in the wall 14b of the brush storage chamber 14, the space in the brush storage chamber 14 becomes negative pressure, so that the dust brushing ability of the rotary brush 15 is increased.

  Therefore, even if the amount of air passing through the suction port 12 is small, the amount of dust that can be sent from the rotary brush 15 to the suction port 12 is increased, so that the cleaning ability can be prevented from being lowered.

  By the way, if a notch is provided in the center in the left-right direction at the lower end of the wall 14b instead of the communication hole 16, the amount of air passing through both ends in the left-right direction of the suction port 12 is extremely reduced. If it becomes like this, it will become impossible to fully suck in dust in the both ends of the suction port 12 in the left-right direction.

  On the other hand, in the above-described embodiment, sufficient dust suction capability is secured at both the left and right ends of the suction port 12 without significantly reducing the amount of air passing through both ends of the suction port 12 in the left and right direction. be able to.

  Further, in the above embodiment, the communication hole 16 overlaps the inside of the cylindrical portion 13a when the communication hole 16 is projected in the axial direction of the cylindrical portion 13a, so that air is sucked from the communication hole 16 into the cylindrical portion 13a. Easy.

  Further, since the air flow blown out in the direction of arrow A1 from the communication hole 16 joins the air flow blown out from the suction port 12 in the direction of arrow A2, the air flow blown out from the suction port 12 in the direction of arrow A2 is the axial direction of the cylindrical portion 13a. Suitable for.

  Therefore, it is possible to reduce noise generated when the airflow sucked from the suction port 12 to the suction air passage 13 hits the upper portion of the cylindrical portion 13a.

  In the above embodiment, one communication hole 16 is formed in the wall 14b, but a plurality of communication holes may be formed in the wall 14b. For example, communication holes having the same shape as the communication holes 16 may be formed on both sides of the communication holes 16 in the left-right direction.

  In the above embodiment, the rotary brush 15 is rotatably arranged in the brush storage chamber 14 and the rotary brush 15 is rotationally driven by the motor. However, the rotary brush 15 is rotatably arranged in the brush storage chamber 14. Just be fine. In other words, the motor that rotationally drives the rotary brush 15 may not be mounted on the suction port body 9.

  In the said embodiment, although the suction air path 13 which has the cylindrical part 13a on the exit side was used, you may use the suction air path which has an elliptical cylindrical part on the exit side.

  The suction port body of the present invention may be used for a canister type vacuum cleaner as in the above embodiment, or may be used for an upright type vacuum cleaner or a cleaning robot.

  Needless to say, the suction port of the present invention can be used regardless of whether the main body of the cleaner is a cyclone system or a paper pack system.

FIG. 1 is a schematic perspective view of a canister type vacuum cleaner. FIG. 2 is a lower perspective view of the suction port according to the embodiment of the present invention. FIG. 3 is a vertical sectional view of the suction port body. 4 is a cross-sectional view taken along line IV-IV in FIG.

Explanation of symbols

6 Suction port body 12 Suction port 13 Suction air passage 14 Brush storage chamber 15 Rotating brush 16 Communication hole

Claims (3)

A suction port facing the surface to be cleaned;
A suction air passage communicating with the suction port;
A brush storage chamber formed adjacent to the suction port and having an opening facing the surface to be cleaned;
A rotating brush rotatably arranged in the brush storage chamber;
A suction port body of a vacuum cleaner, comprising: a communication hole that allows the brush storage chamber and the suction air passage to communicate with each other. In the suction inlet of the vacuum cleaner of Claim 1,
The suction air passage has a cylindrical portion on the outlet side,
The suction port body of the vacuum cleaner, wherein the communication hole overlaps the inside of the cylindrical portion when the communication hole is projected in the axial direction of the cylindrical portion. In the suction inlet body of the vacuum cleaner of Claim 2,
The airflow blown out from the communication hole is inclined with respect to the axial direction of the cylindrical portion so that the airflow sucked from the suction port is directed in the axial direction of the cylindrical portion. Suction port body.

Images