JP4861919B2 - Suction body of vacuum cleaner and vacuum cleaner using the same - Google Patents

Description

  The present invention relates to a mouthpiece used in a vacuum cleaner and a vacuum cleaner using the same.

  In the conventional suction body, dust and dust are scraped and sucked from the surface to be cleaned by a rotary cleaning body provided with a cleaning member such as a brush or a blade.

  The cleaning member of the rotary cleaning body is easily entangled with fibrous materials such as lint and hair, and once entangled, this kind of dust gradually accumulates by rotation on the cylindrical substrate that fixes the cleaning member. become.

  In order to remove this, scissors and a cutter were used to cut and remove the entangled dust.

  In this case, as a structure for removing the rotary cleaning body from the mouthpiece, for example, a structure as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2000-83874) has been proposed. In Patent Document 1, a cover that covers the upper and lower case main bodies and an upper part of the upper case is provided, a cover side locking portion is provided at an edge of the cover, and the locked portion is slid to the cover side locking portion. A slide locking member that engages and disengages is provided in the mouthpiece main body case.

  Further, Patent Document 2 (Japanese Patent Application Laid-Open No. 2004-16605) proposes a suction body provided with a lock member for detachably holding a bearing pressing member on the suction body on the lower surface side of the suction body.

JP 2000-83874 A JP 2004-16605 A

When attaching and detaching the cover by the conventional sliding method, when the slide locking member slides on the case, it becomes heavy or hard when engaged or disengaged due to fine sand or dust entering from the gap of the case. As a result, there was a problem that the movement became astringent. As a result, there was a burden such as finger pain.

  Also, when the cover is attached / detached, the slide locking member is moved. However, it may be difficult to know which position the locking member is moved to engage or disengage. May be operated many times.

  Furthermore, when attaching and detaching the cover and the locking member, it is necessary to slide the slide locking member, remove the cover, and when engaged, attach the cover to the mouthpiece and operate the slide locking member. Yes, it was difficult to support the mouthpiece with one hand and to operate it with the other hand, and it was difficult and cumbersome.

  Further, since the engaging operation depends on the user, there is a possibility that the cover is not used reliably and used in a state where the cover is not completely engaged with the mouthpiece.

  An object of the present invention is to solve these problems, and to provide a suction body of a vacuum cleaner and a vacuum cleaner including the same, which can easily attach and remove a rotary cleaning body.

In order to achieve the above object, the present invention is characterized in that a lower case having an opening facing the surface to be cleaned, an upper case disposed above the lower case, the upper case, and the lower case A rotary cleaning body covered with, a bearing pressing member that detachably holds the rotary cleaning body, and a pivotable rotation provided on the lower case to hold the bearing pressing member in the lower case In the mouthpiece including a locking member, the locking member includes a biasing means that is biased in a direction to engage with the bearing pressing member, and the locking member includes the bearing pressing member. When it is pushed into the lower case, it rotates toward the outside of the suction body, and when the bearing pressing member is mounted on the lower case, it rotates in a direction to engage with the bearing pressing member by the biasing force of the biasing means. The locking member And a means for locking at a position where the engagement of the bearing pressing member is released, the locking member having a guide portion for locking with the locking means, and the locking member and the bearing pressing member When engaging or disengaging, the guide portion is provided so as to get over the locking means in the axial direction in which the locking member rotates .

  According to the present invention, since the locking member is urged by the urging means, the bearing pressing member can be easily attached and detached, and the rotary cleaning body can be easily attached and detached.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 2 is an overall external view of a vacuum cleaner according to an embodiment of the present invention. 201 is a vacuum cleaner main body that houses the dust collecting unit and the electric blower, and 202 is a hose having one end connected to the vacuum cleaner main body 201 and the other end rotatably connected to the hose joint 305. One end of 203 is connected to the other end of the hose 302 so as to be rotatable, and has a switch unit 204 for switching on and off the operation of the vacuum cleaner. 205 is connected to the other end of the hand control unit 303. An extension tube 206 that can be expanded and contracted is a suction body that is connected to the other end of the extension tube 305 and sucks dust on the cleaning surface. The vacuum cleaner uses the suction force generated by the electric blower housed in the vacuum cleaner body 201 to convey the dust on the surface to be cleaned sucked from the lower surface of the suction body 206 through the extension pipe 205 and the hose 202 into the dust collecting portion. I have to.

  FIG. 1 shows an exploded perspective view of a mouthpiece according to an embodiment of the present invention. In FIG. 1, 101 is a lower case having an opening on the lower surface, and 100 is an upper case arranged above the lower case. By attaching the upper case 100 to the lower case 101, the mouthpiece body 150 is configured. 104 is a rotary cleaning body covered with the upper case 100 and the lower case 101, 105 is an electric motor for driving the rotary cleaning body 104, 107 is a safety switch for automatically stopping rotation when the suction body is lifted, 108 is a motor-side pulley, 109 is a large pulley that constitutes a reduction pulley, 110 is a small pulley that constitutes a reduction pulley, and 111 is a shaft that connects the large pulley 109 and the small pulley 110. In this embodiment, a transmission mechanism for transmitting to the end of the rotary shaft of the rotary cleaning body 104 is constituted by the large pulley 109 and the small pulley 110 provided on the shaft 111.

  Reference numeral 120 denotes a locking member for opening and closing a bearing pressing member (not shown) located on the lower surface side of the lower case 101. The support portion protruding from the upper case 100 and the lower case 101 serves as a rotation shaft, and is assembled. The locking member 120 is supported in the vertical direction and restricts the locking member 120 from coming off. The locking member 120 has one end serving as a rotating shaft spring support (not shown) of the upper case 100 and the other end serving as a spring of the locking member 120 The bearing pressing member is biased in the closing direction by a spring 130 (biasing means) fixed to a support portion (not shown).

  Reference numeral 102 denotes a first connection pipe that is rotatable in the vertical direction with respect to the suction body, among the universal joint in which an air passage that communicates the inside and outside of the suction body (vacuum cleaner body) is formed, and 103 is a universal joint. It is a 2nd connection pipe which can be rotated in the left-right direction with respect to the said 1st connection pipe.

  In FIG. 1, the direction along the rotation axis of the rotary cleaning body 104 is referred to as the left-right direction of the mouthpiece, and this left-right direction coincides with the longitudinal direction of the normal mouthpiece. Regarding the up-and-down direction of the mouthpiece, the side on which the opening 118 is formed is referred to as the lower surface side and the opposite side is referred to as the upper surface side in a state where the mouthpiece is placed on a horizontal floor surface. Further, the description will be made assuming that the advancing direction side of the suction port is the front side and the backward direction side is the back side.

  The external view of the vacuum cleaner which concerns on FIG. 2 at one Example of this invention is shown. 201 has a built-in electric blower (not shown) for generating the intake air necessary for collecting the dust collection body at the rear, and a dust collection chamber (not shown) for collecting dust at the front. A vacuum cleaner main body, 202 is connected to the vacuum cleaner main body 201, a hose formed so as to be flexible, and 203 is connected to the hose 202 to control the vacuum cleaner main body 201 and the suction body 206. The handle grip includes a switch 204 and has a flow path (not shown) communicating with the hose 202 and the extension pipe 205. The hose 202, the handle grip 203, and the extension pipe 205 have a built-in power supply line (not shown) for supplying electricity to the suction body 206.

  FIG. 3 shows a plan view (bottom view) when the inlet body according to one embodiment of the present invention is viewed from below. A floor surface opening 118 is provided in the lower case 101 and faces the surface to be cleaned. 301 is a bumper, 300 is a fixed brush, and 303 is a rear wheel. 107 is a safety switch for automatically stopping when the mouthpiece is lifted, and 107a is a floor surface detection wheel for detecting whether it is installed on the surface to be cleaned.

  Reference numeral 315 denotes a bearing unit, which has a built-in bearing, and a pulley 316 that transmits a driving force from the motor 105 is arranged on the outer periphery thereof. A bearing is arranged on both sides of the pulley 316, and is supported in the suction body. ing. Reference numeral 317 denotes a main shaft coupling portion that rotates integrally with the pulley 316 and transmits the rotational force of the electric motor.

  One end of the rotary cleaning body 104 has a driven shaft coupling portion 318 that engages with the main shaft coupling portion 317, and the other end side has a bearing portion 319 that is removably supported by the shaft support portion of the suction body. is doing. The main shaft joint portion 317 and the driven shaft joint portion 318 are engaged with each other by forming concave and convex teeth 317a and 318a on the outermost periphery and meshing them. Reference numeral 305 denotes a unit pressing member that covers the bearing unit portion 315.

  The cleaning members 307 and 308 of the rotary cleaning body 104 can be configured using soft blades in addition to brushes made of fibers or the like. The brushes and blades can be used alone or in combination with brushes and blades. Can be configured. Further, the cleaning member may be constituted by a protrusion formed integrally with the member forming the cylindrical base 306. In any case, the cleaning member is configured to protrude outward from the outer peripheral surface of the cylindrical base body 306.

  Reference numeral 304 denotes a bearing pressing member, and 120 denotes a locking member that holds the bearing pressing member 304 to the lower case 101 of the mouthpiece body so as to be detachable (openable / closable), and is installed on the back side of the mouthpiece body 150. The bearing pressing member 304 detachably holds the rotary cleaning body 104.

  4 is a perspective view showing a mounting state of the locking member 120 according to one embodiment of the present invention. FIG. 4A is a perspective view of the mouthpiece 206 viewed from the rear, and FIG. It is the perspective view which looked at from the upper part.

  The locking member 120 is assembled with the support portions 100a and 101a projecting from the upper case 100 and the lower case 101 as pivot shafts, one end side from the shaft center as an opening / closing operation portion 120a, and the opposite side as a locking portion 120b. Therefore, the locking member 120 is prevented from coming off. In addition, the locking member 120 has the operating portion 120a on the center side of the mouthpiece by the spring 130 having one end fixed to the rotating shaft spring support portion 100b of the upper case 100 and the other end fixed to the spring support portion 120d of the locking member 120. Is biased to rotate. By rotating the locking member 120, the bearing pressing member 304 and the suction body 206 can be opened and closed (detached).

  On the inner side surface of the bearing pressing member 304, there is a hole 304a on the slit through which the locking portion 120b of the locking member 120 can protrude and retract, and a recess (not shown) for coupling to the lower case 101 is provided at the tip. ing.

  FIG. 5 is a partially enlarged plan view of a locking member according to an embodiment of the present invention, and FIG. 5A is a view showing a state in which the locking member 120 is rotated outward, and FIG. ) Is a view showing a state in which the locking member 120 is closed. 5A, when the operation portion 120a of the locking member 120 is rotated outward from the mouthpiece center side, the locking portion 120b engaged with the bearing pressing member 304 is released, and the bearing pressing member 206 is removed from the mouthpiece 206. In FIG. 5B in which the member 304 is detached, the operation portion 120a of the locking member 120 is rotated from the outside toward the center of the suction body, and the locking portion 120b is engaged with the bearing pressing member 304, and the bearing pressing member 304 is engaged. Is attached to the lower case 101 so that the operation portion 120a can be accommodated inside or inside the outer surface of the mouthpiece body 150.

  Next, the operation of this embodiment will be described. When the vacuum cleaner user operates the switch operation unit 204 installed on the handle grip 203, the electric blower in the vacuum cleaner main body 201 operates in an operation mode according to the operated switch. The suction force generated by the electric blower reaches the suction body 206 through the hose 202 and the extension pipe 205. At the same time, the power supplied from the power lines provided on the hose 202 and the extension pipe 205 drives the electric motor 105 via the circuit board 106.

  When the rotary cleaning body 104 connected to the electric motor 105 with a pulley and a belt rotates, dust and dust are scraped and sucked from the surface to be cleaned by a brush and a blade which are cleaning members of the rotary cleaning body 104.

  The cleaning member 307 of the rotary cleaning body 104 is easily entangled with fibrous materials such as lint or hair, and once entangled, this type of dust is gradually accumulated by rotation, and is attached to the cylindrical base that fixes the cleaning member. It can be tightened.

  A method for cleaning the rotary cleaning body 104 that removes fiber such as lint entangled with the cleaning member 307 of the rotary cleaning body 104, hair, etc. will be described with reference to FIGS.

  6 is a partial bottom perspective view of the mouthpiece according to one embodiment of the present invention, FIG. 7 is a partial bottom perspective view of the mouthpiece according to one embodiment of the present invention, and FIG. 8 is one embodiment of the present invention. FIG. 9 is a partial bottom perspective view of a mouthpiece according to an example, and FIG. 9 is a bottom perspective view of the mouthpiece according to an embodiment of the present invention.

  First, the user shuts off the power by the switch operation unit 204 and removes the mouthpiece 206 from the extension pipe. Next, as shown in FIG. 6, the lower surface side of the mouthpiece is directed to the upper surface side. An operator's finger is attached to the operation portion 120a of the locking member 120, and the finger is turned outward from the center side of the mouthpiece body to release the engagement between the bearing pressing member 304 and the locking portion 120b. Then, the bearing pressing member 304 is opened from the lower case 101 as shown in FIG. 7, and the bearing pressing member 304 is removed as shown in FIG. Next, as shown in FIG. 9, when the cleaning member on the bearing portion 319 side of the rotary cleaning body 104 is picked and pulled upward, the bearing portion 309 is fitted and detached from the shaft support portion of the suction body, and then the rotary cleaning body 104 is tilted. By pulling upward, the driven shaft coupling portion 318 is released from the engagement with the main shaft coupling portion 317, and the rotary cleaning body 104 can be detached from the suction body 206. Using the scissors and the cutter, the entangled dust is removed from the detached rotary cleaning body 104. At this time, the rotary cleaning body 104 can be washed with water.

  After the work, in order to incorporate the rotary cleaning body 104 into the mouthpiece 206 in the reverse manner, the teeth of the driven shaft joint portion 318 of the rotary cleaning body 104 are inserted into the teeth of the main shaft joint portion 317 inside the mouthpiece, The two are engaged by engaging each other, and the bearing portion 309 opposite to the rotary cleaning body 104 is pushed into the shaft support portion of the suction body from above. Next, the nail | claw 304a of the bearing pressing member 304 is hooked on the lower case 101, the bearing pressing member 304 is attached, the operation part 120a of the latching member 120 protruding outside is rotated to the suction port center side, and the bearing pressing member What is necessary is just to engage 304 and the latching | locking part 120b.

  With the above configuration, the rotation locking member 120 uses the support portion protruding from the upper case and the lower case as a rotation axis, so the sliding portion of the locking member 120 has a small area around the rotation axis. Therefore, even if fine sand or dust entering from the gap portion of the case accumulates on the sliding portion, it can be easily rotated by operating the operation portion away from the shaft center. That is, like the lever principle, the locking member 120 can be easily operated with the force of a finger. The accumulation of a small amount of dust is advantageous for clogging dust because the movement does not become awkward when engaged and disengaged.

  Further, since the bearing pressing member 304 is configured to open when the operation portion 120a of the locking member 120 is rotated outward from the mouthpiece center side, it is opened when the operation portion 120a protrudes outward from the mouthpiece. Therefore, it can be determined that the operation unit 120a is closed when it is in the mouthpiece. Furthermore, since the locking member 120 is urged by the spring 130 in the direction in which the operation portion 120a rotates toward the mouthpiece center side, the direction of the opening / closing operation is clear from the operational feeling. Therefore, the open / close state of the bearing pressing member is clarified, and the suction port is not operated by mistake in the open state.

  In addition, since the locking member 120 is installed on the back side of the mouthpiece body, it is possible to avoid an increase in the size of the mouthpiece without changing the design. Since the operation unit 120a is configured to be the same as or inside the outer surface of the mouthpiece case, the locking member may come into contact with the wound when it is inserted into a gap in the furniture or the like, or it may become an obstacle. There is no.

  In addition, since the locking member 120 is biased by the spring 130 so that the operation portion 120a of the locking member 120 rotates toward the center of the suction body, the direction in which the engagement with the operation portion 120a is released by contact or the like. Even if some force is applied to the bearing, the engagement with the bearing pressing member 304 is not released unintentionally by the user, and a more reliable engagement can be provided.

  Furthermore, since a tool such as a coin is not necessary for the removal operation of the rotary cleaning body 104, dust cleaning work can be easily performed.

  In addition, since the locking member is locked at the position where the engagement of the bearing pressing member is released, the bearing pressing member can be easily detached from the suction body, and further, the bearing pressing member and the locking member are interlocked. The bearing pressing member can be easily mounted on the suction body without operating the locking member.

  Furthermore, by using a spring as the biasing means, assembly is simple and workability can be improved.

  FIG. 10 is a partially enlarged perspective view of the lower front portion of the lower case 101 according to an embodiment of the present invention. Reference numeral 304 denotes a bearing pressing member. A concave portion 304a is formed in the tip end portion of the bearing pressing member 304, and is pivotally supported by the lower case 101 and held rotatably.

  Similarly to the first embodiment, when the cleaning operation of the rotary cleaning body 104 is performed, the locking member 120 is rotated outward from the center side of the suction body, and the engagement with the bearing pressing member 402 is released. Next, the bearing pressing member 304 is opened from the mouthpiece lower case 101. However, since a part of the bearing pressing member 304 is supported by the mouthpiece so as not to come off, loss or dissipation can be prevented.

  FIG. 11 is a partially enlarged perspective view of the lower case 101 on the locking member 120 side according to one embodiment of the present invention. The locking member 120 has an operating portion 120a, a locking portion 120b for opening and closing the bearing pressing member 304, and a click feeling at the time of opening and closing operation, and at the same time, the locking member 120 releases the engagement with the bearing pressing member 304. A guide portion 120c is formed for locking in this state. The lower case 101 is provided with a rib 101b so as to be contactable when the guide portion 120c is rotated.

  FIG. 11A shows a state in which the bearing pressing member 304 and the suction body 206 are engaged, and the operation portion 120a of the locking member 120 is housed in the suction body. At this time, the movement in the rotational direction is restricted by the force received from the spring 130. To open the bearing pressing member 304, when the operation portion 120a is rotated outwardly from the center of the mouthpiece as shown in FIG. 11B, the guide portion 120c comes into contact with the rib 502 and becomes resistance, and further rotation is continued. Overcoming the rib 101b, feeling a click, the locking portion 120b engaged with the bearing pressing member 304 is disengaged, and it can be felt that the bearing pressing member 304 can be detached from the lower case 101. Further, due to the contact resistance between the rib 502 and the guide portion 120c, the operation portion 120a can be prevented from rotating to the center side of the suction body due to urging from the spring, and can be kept in the open state. It can be easily removed from the mouthpiece 206 with one hand.

  When the bearing pressing member 304 is engaged, the bearing pressing member 304 is attached to the lower case 101 from the state shown in FIG. 11B, and the operation portion 120a of the locking member 120 is rotated toward the center of the mouthpiece. The guide portion 120c comes into contact with the rib 101b and becomes a resistance, but if it continues to rotate, it will get over the rib 101b. At this time, a click feeling released from the resistance feeling of the operation is transmitted to the finger, and it can be actually felt that the operation has started, and since it is released from the contact resistance between the rib 101b and the guide portion 120c, The locking member 120 is in the state shown in FIG. 11A, and the bearing pressing member 304 and the locking member 120 are reliably and easily engaged.

  Further, when the bearing pressing member 304 is mounted on the lower case 101, even when the locking member 120 is in the state of FIG. 11A, when the bearing pressing member 304 is pushed into the lower case 101, When the inclined surface 304b of the bearing pressing member 304 and the locking portion 120b of the locking member 120 come into contact with each other and the locking member 120 slides, the operation portion 120a rotates outward from the mouthpiece center side, and The bearing pressing member 304 can be pushed into the lower case 101.

  In addition, when the bearing pressing member 304 is completely attached to the lower case 101, the locking member 120 is biased by the spring 130, so that the operation portion 120 a rotates toward the center of the mouthpiece, so that the engagement The bearing pressing member 304 can be easily engaged with the suction body 206 without operating the stop member 120.

  As described above, when the locking member 120 is rotated, a click feeling is provided, so that the state in which the bearing pressing member 304 and the suction body 206 are engaged / disengaged can be recognized by finger feeling and sound. Can provide reliable work.

  Further, by urging the locking member 120 using the spring 130, the engagement between the locking member 120 and the bearing pressing member 304 is further ensured, and the engagement operation can be performed more easily with one hand. Since it can be operated, it is possible to easily carry out the dust cleaning work which is tedious and troublesome.

  FIG. 12 is a perspective view of a driven shaft coupling portion 318 that engages with a main shaft coupling portion 317 according to one embodiment of the present invention, and FIG. 13 is a cross-sectional view of each. Reference numeral 315 denotes a bearing unit, which includes a pulley 316 that transmits a driving force from the electric motor 105, and bearings 320 and 319 that incorporate bearings 323 and 322 on both sides of the pulley 316. Reference numeral 317 denotes a main shaft coupling portion that rotates integrally with the pulley 316 and the shaft 321 and transmits the rotational force of the electric motor. Engagement teeth 317 a for transmitting rotational force to the rotary cleaning body 104 are formed on the outer periphery of the main shaft coupling portion 317.

  One end side of the rotary cleaning body 104 has a driven shaft coupling portion 318 that engages with the main shaft coupling portion 317, and an engagement tooth 318a is formed on the outermost periphery, and both are engaged by engaging with each other. . A cylindrical cylindrical body of the rotary cleaning body 104 is inserted in the inner periphery of the main shaft coupling portion 317, and a step is provided in the outer periphery to form an engagement tooth 318a.

  By providing the engagement teeth 318a outside the outer periphery of the rotary cleaning body 104, it is possible to secure the meshing height of the engagement teeth 318a even if the engagement teeth 317a and 318a have a short axial length. The length of the axial cleaning member can be used effectively.

  In the engaging portion of the main shaft coupling portion 317 and the driven shaft coupling portion 318 of the rotary cleaning body 104, both the joint portions face each other with a gap in the axial direction and the circumferential direction. Since they are engaged, the deviation of the shaft center can be reduced as compared with the case where the same gap is near the center.

  FIG. 14 shows a state where the engagement teeth 317a of the main shaft coupling portion 317 and the engagement teeth 318a of the driven shaft coupling portion 318 are engaged. By moving the intersection 330 of the extension line of the wall surface where the engagement teeth 317a and the engagement teeth 318a mesh with each other to the outer peripheral side from the central axis of the main shaft coupling portion 317, the wall surface of the engagement teeth 317a of the main shaft coupling portion 317 is engaged. The force pushing the wall surface of the tooth 318a is decomposed into a tangential force F1 and an axial force F2. Due to the axial force F2, a force pushed outward is applied to the engaging teeth 318a of the driven shaft coupling portion 318. Thus, since this force works at all the meshing locations, they cancel each other out and stabilize when the rotations of the main shaft coupling portion 317 and the driven shaft coupling portion 318 become coaxial.

  Thereby, generation | occurrence | production of the noise by the shake at the time of rotation of the rotary cleaning body 104 is suppressed.

  Further, since the engaging portion meshes with the outer peripheral portion, it is easy to visually confirm, so that it can be easily attached and detached, and dust attached to the engaging portion can be easily found and cleaned.

  FIG. 15 is a perspective view of the pulley portion 316 of the bearing unit 315 according to the embodiment of the present invention. Reference numeral 316a denotes radial ribs for cooling the bearings 323 and 322 disposed on both sides of the pulley 316.

  As shown in FIG. 13, the heat generated by the high-speed rotation of the bearings 323 and 322 is transmitted through the shaft 321 to dissipate heat when the end surface of the bearing portion 319 comes into contact with external air, and cooling is performed. In this embodiment, in order to enhance the cooling effect, radial ribs 316a are provided in the pulley portion 316, and air is diffused between the bearing portion 319 and the heat is released to the external air.

  Therefore, since the circulation with the external air becomes efficient, the temperature of the bearing does not rise, and the life of the bearing can be prevented from being deteriorated.

  Each embodiment of the present invention can be applied not only to a floor moving type vacuum cleaner but also to an upright type or stick type vacuum cleaner. It can be applied not only to motor-driven suction ports but also to air-driven systems.

It is a disassembled perspective view of the suction mouth which concerns on one Example of this invention. It is an external view of the vacuum cleaner which concerns on one Example of this invention. It is a bottom view of a mouthpiece concerning one example of the present invention. It is a perspective view which shows the mounting state of the locking member which concerns on one Example of this invention. It is a partial enlarged plan view of the locking member concerning one example of the present invention. It is a partial bottom perspective view of a mouthpiece concerning one example of the present invention. It is a partial bottom perspective view of a mouthpiece concerning one example of the present invention. It is a partial bottom perspective view of a mouthpiece concerning one example of the present invention. It is a bottom perspective view of a mouthpiece concerning one example of the present invention. FIG. 3 is a partially enlarged perspective view of a lower front portion of a lower case 101 according to an embodiment of the present invention. It is a partial expansion perspective view of the lower case concerning one example of the present invention. It is a perspective view of the shaft coupling part which concerns on one Example of this invention. It is sectional drawing of the bearing part which concerns on one Example of this invention. It is the elements on larger scale of the shaft coupling part which concerns on one Example of this invention. It is a perspective view of the pulley part which concerns on one Example of this invention.

Explanation of symbols

100 Upper case 100b Rotating shaft spring support portion 101 Lower case 104 Rotating cleaning body 120 Locking member 120a Operation portion 120b Locking portion 120c Guide portion 120d Spring support portion 130 Spring 206 Suction body 304 Bearing holding member

Claims (2)

A lower case having an opening facing the surface to be cleaned, an upper case disposed above the lower case, a rotary cleaning body covered with the upper case and the lower case, and the rotary cleaning body being detachable In the mouthpiece including a bearing pressing member that is held in the holding case and a locking member that is rotatably provided in the lower case and holds the bearing pressing member in the lower case.
The locking member includes a biasing means that is biased in a direction to engage with the bearing pressing member ,
When the bearing pressing member is pushed into the lower case, the locking member rotates toward the outside of the suction body, and when the bearing pressing member is attached to the lower case, the biasing force is applied by the biasing means. Rotate in a direction to engage with the bearing pressing member,
Means for locking the locking member at a position where the engagement of the bearing pressing member is released;
The locking member has a guide portion for locking with the locking means,
When engaging or disengaging the locking member and the bearing holding member, the guide portion is provided so as to get over the locking means in the axial direction in which the locking member rotates. The mouthpiece of the vacuum cleaner. A vacuum cleaner body that houses the dust collector and the electric blower, a hose connected to the vacuum cleaner body, a hand operating part connected to the hose, an extension pipe connected to the hand operating part, and the extension In a vacuum cleaner having a mouthpiece connected to a tube,
The mouthpiece is the mouthpiece according to claim 1.

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