JP4896764B2 - Suction port - Google Patents

Description

  The present invention relates to a suction port body provided with a rotary cleaning body rotatably arranged in a suction chamber.

  2. Description of the Related Art Conventionally, there is known a suction port body including a suction port body having a suction chamber in which a bottom surface suction opening is formed, and a rotary cleaning body rotatably disposed in the suction chamber (see Patent Document 1).

The suction port body has bearing chambers provided on both sides of the suction chamber, and holding members that rotatably hold the shaft portion are attached to both ends of the shaft portion of the rotary cleaning body. The bearing portion is supported by the bearing chamber, whereby the rotary cleaning body is rotatable in the suction chamber. The bearing chamber is separated from the suction chamber by a partition wall.
JP 10-179474 A

  By the way, in such a suction port body, since a hole through which the shaft portion of the rotary cleaning body passes is formed in the partition wall, thread scraps enter the hole, and the thread scraps enter the holding member. There was a risk of entering and locking the rotary cleaning body.

  Therefore, there is a type in which flanges are formed at both ends of the shaft portion of the rotary cleaning body so that yarn waste or the like does not enter into the holding member.

  However, by providing flanges at both ends of the shaft portion of the rotary cleaning body, the both ends cannot be passed through the holes in the partition wall. It must be clamped with a plate and fixed.

  For this reason, there existed a problem that the assembly | attachment of a rotary cleaning body was troublesome.

  Therefore, a hole is provided in the side wall between the suction chamber and one of the bearing chambers, and the bearing portion at one end of the shaft portion of the rotary cleaning body is inserted and attached to the bearing chamber from the hole, and the other end portion of the shaft portion is attached. There has been considered a structure in which a bearing portion is sandwiched and assembled.

  However, there arises a problem that yarn waste or the like easily enters the bearing portion of the rotary cleaning body through the hole in the side wall.

  An object of the present invention is to provide a suction port body capable of ensuring assembly of the rotary cleaning body and preventing thread waste from entering the bearing portion of the rotary cleaning body, and the suction port body. It is to provide a vacuum cleaner.

The invention of claim 1 includes a suction port body having a suction chamber having a suction opening formed on a bottom surface, a rotary cleaning body rotatably disposed in the suction chamber, and bearing chambers provided on both sides of the suction chamber. An insertion opening is formed in one side wall of the suction chamber, and one end portion of the shaft portion of the rotary cleaning body is inserted into the one bearing chamber from the insertion opening to be rotatably supported, and the shaft portion A suction port body for assembling the rotary cleaning body with the other end portion of the other bearing chamber being rotatably sandwiched between the upper wall portion and the bottom wall portion of the other bearing chamber,
Forming a plurality of flanges at one end of the shaft,
Among these flanges, the diameter of the flange on the end side is made smaller than the diameter of the flange on the inner side of this flange,
A plurality of annular ribs that are respectively opposed to the peripheral end surfaces of the flanges and that form a predetermined gap between the peripheral end surfaces are provided in the one bearing chamber, and the flanges on the end side of the plurality of annular ribs are provided on the flanges. The inner diameter of the opposing annular rib is smaller than the inner diameter of the annular rib inside the annular rib .

  According to the present invention, it is possible to secure the assembling property of the rotary cleaning body and to prevent the yarn waste from entering the bearing portion of the rotary cleaning body.

  Hereinafter, an example which is an embodiment of a suction mouth object concerning this invention and a vacuum cleaner provided with this suction mouth object is described based on a drawing.

  A vacuum cleaner 10 shown in FIG. 1 is detachably connected to a cleaner body 11, a hose 12 detachably connected to the cleaner body 11, and a hand operation tube 13 at the other end of the hose 12. The extension pipe 14 is provided with a suction port body 20 or the like that is detachably connected to the distal end portion of the extension pipe 14. An electric blower (not shown) is provided in the cleaner body 11, and dust is sucked from the suction port 20 by this electric blower.

  As shown in FIGS. 2 and 3, the suction port body 20 includes a suction port body 23 having a suction chamber 22 having a suction opening 21 formed on the bottom surface, and a rotary cleaning body 60 that is rotatably disposed in the suction chamber 22. And a connecting pipe 24 and the like provided at the rear portion of the suction port main body 23 so as to be rotatable in an arrow P1 (vertical) direction. The distal end portion of the extension tube 14 is detachably connected to the connecting tube 24. Further, the connecting tube 24 can be rotated around the axis J through the rotating tube 25.

  As shown in FIG. 4, the rotary cleaning body 60 includes a shaft portion 61 and a plurality of blades 62 attached to the shaft portion 61 and formed in a spiral shape.

  A cap 63 and a bearing portion 64 are integrally attached to one end portion (left end portion in FIG. 4) of the shaft portion 61, and the bearing portion 64 holds one end of the shaft portion 61 rotatably. .

  The cap 63 has a plurality of cylindrical portions having different diameters and four flanges F1 to F4 formed integrally with the cylindrical portion, and the outermost flange on the end portion side of the shaft portion 61. The diameter of F4 is the smallest, and the diameter of the innermost flange F1 is the largest. That is, the size relationship of the diameters of the flanges F1 to F4 is F1> F2 = F3> F4. The flange F <b> 1 is in contact with the end of the blade 62.

  A cap 65 and a bearing portion 66 are integrally attached to the other end portion (right end portion in FIG. 4) of the shaft portion 61, and the bearing portion 66 rotatably holds the other end of the shaft portion 61. It is.

  The cap 65 has a plurality of cylindrical portions having different diameters, and three flanges F5 to F7 and a driven pulley 65A integrally formed on the cylindrical portion.

  As shown in FIG. 3, the suction port body 23 has bearing chambers 30 and 31 formed on both sides of the suction chamber 22 and a front cover 32 provided on the front surface of the suction chamber 22. A motor (not shown) is built in the suction port body 23, and a timing belt B is wound between a drive pulley (not shown) provided on a drive shaft of the motor and a driven pulley 65 </ b> A of the rotary cleaning body 60. The rotary cleaning body 60 is rotated by a motor.

  In FIG. 3, reference numeral 26 denotes a detection roller for detecting the surface to be cleaned, and 27 denotes a roller.

  As shown in FIGS. 5 and 6, the bearing chamber 30 and the suction chamber 22 are partitioned by a partition wall (side wall) 40, and an insertion opening 41 is formed in the partition wall 40. The lower part of the insertion opening 41 is open.

  As shown in FIG. 5, the bearing chamber 30 is formed with three arc-shaped ribs (semi-annular ribs) R1a to R3a and a support portion 42 that supports the bearing portion 64 (see FIG. 4) of the rotary cleaning body 60. Has been. The heights of the ribs R1a to R3a are set to R1a <R2a <R3a.

  The rib R3a and the support portion 42 are integrally formed inside the bottom wall portion 43 (see FIG. 6) integrally formed with the lower case 23A that constitutes the suction port body 23.

  The support portion 42 includes a pair of opposing clamping wall portions 42A and a lower contact portion 42B formed between the pair of clamping wall portions 42A.

  A recess H1a is formed between the rib R1a and the rib R2a, a recess H2a is formed between the rib R2a and the rib R3a, and a recess H3a is formed between the rib R3a and the lower contact portion 42B. ing.

  Similarly, on the lower surface of the upper case 23D (see FIG. 1) of the suction port main body 23, as shown in FIG. 7, three arc-shaped ribs (semi-annular ribs) R1b to R3b and a bearing of the rotary cleaning body 60 are provided. A support portion 45 that supports the portion 64 (see FIG. 4) is formed. The support portion 45 includes a pair of sandwiching wall portions 45A facing each other in the same manner as the support portion 42 (see FIG. 5), and an upper contact portion 45B formed between the pair of sandwiching wall portions 45A.

  A recess H1b is formed between the rib R1b and the rib R2b, a recess H2b is formed between the rib R2b and the rib R3b, and a recess H3b is formed between the rib R3b and the upper contact portion 45B. Yes.

  Further, three annular ribs R1 to R3 are formed by the ribs R1a to R3a of the lower case 23A and the ribs R1b to R3b of the upper case 23D. Further, the inner diameters of the ribs R1 to R3 are larger toward the inner side (right side in FIG. 5). The annular ribs R1 and R2 are set to face the flanges F3 and F4 of the rotary cleaning body 60 when the rotary cleaning body 60 is assembled (see FIG. 7).

  As shown in FIG. 8, the bearing chamber 31 is partitioned from the suction chamber 22 by a partition wall 50, and a semicircular cutout 50 </ b> A is formed in the partition wall 50. The bearing chamber 31 is formed with a rib 52 and a support portion 53 that supports the bearing portion 66 of the rotary cleaning body 60. The rib 52 is formed with a semicircular cutout 52A. The partition wall 50, the rib 52, and the support portion 53 are integrally formed on the lower surface of the upper case (upper wall portion) 23D (see FIG. 1) of the suction port body 23.

  The partition wall 50 is disposed between the flange F5 and the flange F6 of the rotary cleaning body 60, and the rib 52 is disposed between the flange F6 and the flange F7 of the rotary cleaning body 60.

  A bottom wall plate (bottom wall portion) (not shown) is screwed to the bottom portion of the bearing chamber 31, and a partition wall, a rib, and a support portion are formed on the bottom wall plate in the same manner as described above. Has been. By screwing the bottom wall plate to the bottom of the bearing chamber 31, the upper case 23D and the bottom wall plate sandwich and fix the bearing portion 66 of the rotary cleaning body 60 from above and below.

  Further, the flanges F <b> 5 to F <b> 7, the partition walls 50, and the ribs 52 are alternately arranged, so that yarn waste or the like can be prevented from entering the bearing portion 66 of the rotary cleaning body 60.

  Next, how to assemble the rotary cleaning body 60 will be described.

  First, the bearing portion 64 and the flanges F3 and F4 of the rotary cleaning body 60 shown in FIG. 4 are inserted into the opening 41 of the partition wall 40 shown in FIG. 5 from the suction chamber 22 (see FIG. 3), and the bearing portion 64 is inserted. It is inserted between the pair of sandwiching wall portions 42A and 45A of the support portion 42 of the bearing chamber 30 and between the lower contact portion 42B and the upper contact portion 45B (see FIG. 7). By this insertion, the bearing portion 64 of the rotary cleaning body 60 is attached to the support portion 42, and the shaft portion 61 of the rotary cleaning body 60 is rotatably supported by the support portion 42.

Further, when the bearing portion 64 of the rotary cleaning body 60 is attached to the supporting portion 42 of the bearing chamber 30, as shown in FIG. 7, the flanges F 2 of the rotary cleaning body 60 is disposed in the insertion opening 41 of the partition wall 40 The flanges F3 and F4 of the rotary cleaning body 60 face the ribs R1 and R2 of the bearing chamber 30.

  Insertion of the bearing portion 64 and the flanges F3 and F4 of the rotary cleaning body 60 is such that the diameters of the flanges F3 and F4 are set to F3> F4 and the inner diameters of the annular ribs R1 to R3 are set to R1> R2> R3 Therefore, the insertion becomes easy.

  Next, as shown in FIG. 8, the timing belt B is wound around the driven pulley 65 </ b> A of the rotary cleaning body 60 and the bearing portion 66 of the rotary cleaning body 60 is attached to the support portion 53 of the bearing chamber 31. The wall plate is screwed to the bottom of the bearing chamber 31. Thereby, the bearing part 66 of the rotary cleaning body 60 is clamped by the upper case 23D and the bottom wall plate of the suction port body 23, and the assembly of the rotary cleaning body 60 is completed.

  In this way, one bearing portion 64 of the rotary cleaning body 60 is inserted into the opening 41 of the partition wall 40, the other bearing portion 66 is attached to the support portion 53 of the bearing chamber 31, and the bottom wall plate is simply screwed. Therefore, the assembly of the rotary cleaning body 60 can be easily performed.

Further, as shown in FIG. 7, the height of the rib R2a of the bearing chamber 30 is set higher than the height of the rib R1a, that is, the inner diameter of the annular rib R2 is set smaller than the inner diameter of the annular rib R1 and the diameter of the flange F3. because There is set larger than the diameter of the flange F 4, when the rotary cleaning body 60 is rotated, such as lint, which over the rib R1a enters between the flange F3 and ribs R1a of the rotary cleaning body 60 It becomes difficult to enter between the flange F4 of the rotary cleaning body 60 and the rib R2a.

  Furthermore, thread scraps that enter between the flange F4 and the rib R2a of the rotary cleaning body 60 and get over the rib R2a are difficult to get over the rib R3 because the rib R3a is set higher than the rib R2a. . Further, when the yarn waste has passed over the rib R3, the yarn waste enters the bearing portion 64 of the rotary cleaning body 60 because the recess H3a is formed between the rib R3 and the lower contact portion 42B. It will be difficult.

  With these, it is possible to reliably prevent the yarn waste from entering the bearing portion 64 of the rotary cleaning body 60.

It is the perspective view which showed the external appearance of the electric vacuum cleaner which concerns on this invention. It is the side view which showed the suction inlet of the vacuum cleaner shown in FIG. It is the bottom view which showed the bottom face of the suction inlet shown in FIG. It is the front view which showed the rotary cleaning body of the suction inlet body shown in FIG. It is the elements on larger scale which showed the bearing chamber of the suction inlet body shown in FIG. It is the expansion perspective view which showed a part of bottom face of the suction inlet body. It is the partial expanded sectional view which made a part of suction port a cross section. It is the elements on larger scale which showed a part of bottom face of the suction inlet.

Explanation of symbols

20 Suction port body 21 Suction opening 22 Suction chamber 23 Suction port body 30 Bearing chamber 40 Partition wall (side wall)
41 Insertion opening 60 Rotary cleaning body R1 Annular rib R2 Annular rib F3 Flange F4 Flange

Claims (2)

A suction port body having a suction chamber having a suction opening formed on a bottom surface; a rotary cleaning body rotatably disposed in the suction chamber; and bearing chambers provided on both sides of the suction chamber. An insertion opening is formed in one side wall of the shaft, and one end portion of the shaft portion of the rotary cleaning body is inserted into the one bearing chamber from the insertion opening to be rotatably supported, and the other end portion of the shaft portion is supported on the other side. A suction port body to which the rotary cleaning body is assembled by being rotatably sandwiched between an upper wall portion and a bottom wall portion of the bearing chamber,
Forming a plurality of flanges at one end of the shaft,
Among these flanges, the diameter of the flange on the end side is made smaller than the diameter of the flange on the inner side of this flange,
A plurality of annular ribs that are respectively opposed to the peripheral end surfaces of the flanges and that form a predetermined gap between the peripheral end surfaces are provided in the one bearing chamber, and the flanges on the end side of the plurality of annular ribs are provided on the flanges. A suction port body characterized in that an inner diameter of an opposing annular rib is made smaller than an inner diameter of an annular rib inside the annular rib . A vacuum cleaner comprising the suction port according to claim 1.

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