JP2008099924A - Suction head of vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction head of a vacuum cleaner, which transmits the torque of a motor or the like to a rotary brush and has an improved removability of the rotary brush using two meshing portions, to solve the problem of the probability of abnormal noise caused by rattling in the thrust direction or tooth jumping between meshing surfaces of the meshing portions during use. <P>SOLUTION: Urging means for directing the rotary brush of the suction head toward the meshing surfaces of the meshing portions and urging the rotary brush in the thrust direction is provided to eliminate rattling in the thrust direction, so that the probability of the abnormal noise or tooth jumping is allowed to be eliminated. Additionally, a thermal expansion or intrusion of dust is allowed to be dealt with by the urging means formed of an elastic body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a suction mouth of a vacuum cleaner.

  Hereinafter, a description will be given with reference to FIG.

  There are two types of rotary brushes 201 at the suction mouth of the vacuum cleaner, one that uses the intake air of the vacuum cleaner and the rotary brush 201 itself generates a rotational force, or the one that transmits the rotational force of a motor or the like to the rotary brush.

  Among those that transmit the rotational force of a motor or the like to the rotating brush 201, there are those that improve the usability by using two engaging portions A, B202, 203 (Patent Documents 1 and 2). In the vacuum cleaner suction port 301, one end of the rotating brush is gripped by meshing of the meshing portions A, B202, 203, and the bearing 204 at the other end of the rotating brush is the upper case 205 and It is gripped by a mouthpiece body 207 composed of a lower case 206 and a bearing cover 208 disposed below the suction body.

  As a result, when removing the rotating brush 201, it is possible to remove it simply by removing the bearing cover 208.

Patent No.3072211 Patent No. 3594173

  In the background art described above, when the rotating brush is incorporated in the suction mouth body, the influence of thermal expansion due to changes in the use environment and the ingress of dust are taken into consideration, and the backlash is provided in the thrust direction. For this reason, there is a possibility that abnormal noise generated due to looseness during use or tooth skipping on the meshing surfaces of the meshing portions A and B may occur. An object of the present invention is to solve the above-mentioned problems and eliminate the possibility of noise generation and tooth skipping without being affected by thermal expansion or dust.

  In order to achieve the above object, the present invention is characterized by a mouthpiece body formed by attaching an upper case to a lower case having an opening on the bottom surface, and a meshing portion B on the mouthpiece body. A suction mouth of a vacuum cleaner comprising a rotating brush rotatably disposed at the end, and another meshing portion A that is coupled to the meshing portion B of the rotating brush and transmits the rotation by coupling in the rotational direction. In the above, an urging means using an elastic body for urging the rotating brush toward the two meshing portions is provided.

  Further, in the suction mouth of the vacuum cleaner described above, a leaf spring is used as the elastic body.

  Further, in the suction mouth of the vacuum cleaner described above, a soft material is used for the elastic body.

  Further, in the suction mouth of the vacuum cleaner described above, the elastic body is characterized by using a rib extending from the upper case or the lower case.

  According to the present invention, when the rotating brush is incorporated into the suction body, the rotating brush is constantly urged toward the meshing portion by the urging means. Therefore, the play in the thrust direction can be eliminated, and abnormal noise and tooth skipping can be prevented. Further, when the length of the suction body and the rotating brush are changed due to thermal expansion, or when dust is caught, it is possible to cope with this by the elastic deformation of the urging means.

  Further, by using a leaf spring for the elastic body, the number of parts of the urging means can be minimized and the structure can be simplified.

  Further, by using a soft material for the elastic body, it becomes possible to absorb a slight vibration between the rotating brush and the suction mouth main body, and the sound can be silenced.

  Further, by forming the elastic body with integral ribs extended from the upper case and the lower case, the cost can be reduced.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 3 is an overall external view of a vacuum cleaner according to an example of the embodiment of the present invention.

  In FIG. 3, 304 is a dust collecting chamber and a vacuum cleaner main body that houses an electric blower, 305 is a hose joint that is connected to the front of the vacuum cleaner main body 304 and communicates with the dust collecting chamber, and 303 is rotatable to the hose joint 305. 306 is a hand-operated operation unit having switch means for turning on and off the operation of the cleaner, and 306 is a telescopic extension tube connected to the hand-operating unit 306. , 301 is a suction port which is connected to the extension pipe 302 and sucks dust on the cleaning surface.

  7 and 1 are a central cross-sectional view of a suction port 301 according to an example of an embodiment of the present invention and a perspective view as seen from the lower surface side (before attaching a rotating brush). FIG. 8 is a plan view in which a part of the suction port 301 is sectioned.

  The vacuum cleaner uses the suction force generated in the vacuum cleaner body 304 to transfer the dust on the surface to be cleaned from the opening 101 of the lower case 206 through the hose 303, the extension pipe 302, and the extension connecting pipe 701 to the dust collection chamber of the main body. To do. The suction port 301 is provided with a rotating brush 201 rotatably accommodated in a horizontally long brush chamber 102 formed in the left and right (width) direction formed on the front side of the suction port. The rotating brush 201 is provided with a meshing portion B203 at the end, and is gripped rotatably by the meshing portion A202 and the bearing 204 when in use. Further, the rotational force of the driving motor 801 is transmitted to the pulley 803 via the belt 802, and the rotating brush 201 is rotated by further coupling the meshing portions A, B202, 203.

  An extension pipe joint 702 is provided at the rear end of the suction port 301 at the center in the left / right (width) direction, and is connected to the extension pipe so that it can rotate from the horizontal state to the vertical state. Install the tube 701. The extension connecting pipe 701 can be rotated 180 degrees in the left-right (width) direction. One end of the connecting pipe 701 is connected to the brush chamber 102 and the opening 101, and the other end is connected to the extension 302. Has been.

  The mouthpiece body 207 is provided with a biasing means 103 that biases the rotating brush 201 toward the meshing portions A, B202, and 203. When the rotating brush 201 is placed on the suction mouth body 207, it is always urged toward the meshing portion 203 side, so there is no backlash in the thrust direction, and it is possible to eliminate the possibility of noise and tooth skipping. It becomes. It is possible to cope with thermal expansion and dust biting by elastic deformation of the urging means.

  FIG. 4 is a partially enlarged view and a cross-sectional view of a suction port 301 according to an example of the embodiment of the present invention (part P in FIG. 1).

  A leaf spring 401 is disposed in the mouthpiece body 207, and the bearing 204 pushes the leaf spring 401 when the rotating brush 201 is assembled. At that time, an urging force can be obtained by the elastic force of the leaf spring 401 to return. As a result, the play in the thrust direction can be eliminated, and the possibility of abnormal noise and tooth skipping can be eliminated. It is possible to cope with thermal expansion and dust biting by elastic deformation of the leaf spring 401. Furthermore, by holding the leaf spring 401 using the leaf spring mounting groove 402 opened in the mouthpiece body 207, the leaf spring 401 alone urges the rotating brush 201, eliminating the need for other parts and simplifying the structure. It becomes.

  FIG. 5 is a partially enlarged view and a cross-sectional view of a suction port 301 according to an example of an embodiment of the present invention.

  A soft material 501 is affixed to the mouthpiece body, and the bearing 204 pushes in the soft material 501 when the rotating brush 201 is assembled. At that time, the soft material 501 is deformed and an urging force can be obtained by an elastic force to return. As a result, the play in the thrust direction can be eliminated, and the possibility of abnormal noise and tooth skipping can be eliminated. It is possible to cope with thermal expansion and dust biting by deformation of the soft material 501. Furthermore, if a soft material is disposed at a position where the bearing, the suction mouth main body 207, and the bearing cover 208 are in contact with each other, a noise reduction effect can be expected.

  FIG. 6 is a partially enlarged view and a cross-sectional view of a suction port 301 according to an example of an embodiment of the present invention.

  Bello-shaped rib 601 is arranged in lower case 206, and when rotating brush 201 is assembled, bearing 204 can deform rib 601 and an urging force can be obtained by the elastic force of rib 601 returning. . As a result, the play in the thrust direction can be eliminated, and the possibility of abnormal noise and tooth skipping can be eliminated. It is possible to cope with thermal expansion and dust biting by elastic deformation of the ribs. By providing the rib 601 directly from the shoulder case 206, the cost for the biasing means can be reduced. The rib 601 may be provided from the bearing cover 502 and the case 205.

It is the perspective view seen from the lower surface side of the suction opening of the vacuum cleaner concerning an example of an embodiment of the invention (before rotating brush attachment). (a) is a perspective view (use state) seen from the lower surface side of the suction mouth of the conventional vacuum cleaner, (b) is a perspective view (with the bearing cover removed) seen from the lower surface side of the suction mouth of the conventional vacuum cleaner, (c) is the perspective view seen from the lower surface side of the suction opening of the conventional vacuum cleaner (before rotation brush attachment). It is a main body external view of the vacuum cleaner concerning an example of embodiment of this invention. FIG. 1 (a) is an enlarged view of a portion of FIG. 1P of a suction mouth according to an example of an embodiment of the present invention, and FIG. 4 (b) is an AA cross section of FIG. 4 (a). FIG. 1 (a) is an enlarged view of a portion of FIG. 1P of a suction port according to an example of an embodiment of the present invention, and FIG. 5 (b) is an AA cross section of FIG. 5 (a). FIG. 1 (a) is an enlarged view of a portion of FIG. 1P of a suction mouth according to an example of an embodiment of the present invention, and (b) is an AA cross section of FIG. 6 (a). It is a center sectional view of a suction mouth concerning an example of an embodiment of the invention. It is the top view which made a part of suction mouth concerning an example of an embodiment of the invention a section.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Opening part, 102 ... Brush chamber, 103 ... Energizing means, 201 ... Rotating brush, 202 ... Meshing part A, 203 ... Meshing part B, 204 ... Bearing, 205 ... Upper case, 206 ... Lower case, 207 ... mouthpiece body, 208 ... bearing cover, 301 ... suction port, 302 ... extension pipe, 303 ... hose 304 ... cleaner body, 305 ... hose fitting, 306 ... operation part, 401 ... plate spring, 402 ... leaf spring attachment groove 501 ... Soft material, 502 ... Bearing cover, 601 ... Rib, 701 ... Connection between extensions, 702 ... Joint between extensions, 801 ... Motor for driving, 802 ... Belt, 803 ... Pulley.

Claims (4)

  A mouthpiece body formed by attaching an upper case to a lower case having an opening on the bottom surface, a rotating brush disposed on the mouthpiece body with a meshing portion B at an end thereof, and the rotating brush. In the suction port of the vacuum cleaner provided with another meshing portion A that is opposed to the meshing portion B and transmits the rotation by being coupled in the rotational direction, the rotating brush is connected to the two meshing portions A and B. A suction mouth of a vacuum cleaner, characterized in that an urging means by an elastic body urging in a direction is provided.   The mouthpiece of the vacuum cleaner according to claim 1, wherein a leaf spring is used as the elastic body.   The suction mouth of the vacuum cleaner according to claim 1, wherein a soft material is used for the elastic body. The mouthpiece of the vacuum cleaner according to claim 1, wherein a rib extended from the bearing cover that holds the upper case, the lower case, or the rotating brush is used for the elastic body.

Images