JP6129811B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner including another suction port in addition to a substantially T-shaped suction port for floors.

  The conventional vacuum cleaner is provided with an extension pipe bending attachment between the grip portion and the extension pipe as disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2000-300484). This folding attachment is composed of two L-shaped elbow pipes, and these two elbow pipes are rotatably connected. Then, by rotating this elbow pipe, the upper part of the bed, table, or air conditioner is cleaned.

  Further, as disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-253456), a rotatable joint is provided between the upper extension pipe and the lower extension pipe to clean under the sofa or the bed. There has been proposed a vacuum cleaner that performs the above.

  Further, as disclosed in Patent Document 3 (Japanese Patent Laid-Open No. 2007-44267), a connection pipe is connected to the suction port portion via a coupling portion, and the connection pipe is sucked around the rotation axis of the coupling portion. There has been proposed an electric vacuum cleaner that is rotated to the inlet side of the mouth to clean an air conditioner or furniture.

  Further, as disclosed in Patent Document 4 (Japanese Patent Laid-Open No. 2009-66332), there has been proposed an electric vacuum cleaner in which an attached suction tool that can be expanded and contracted by using a hook body is attached to an extension pipe.

  Further, as disclosed in Patent Document 5 (Japanese Patent Application Laid-Open No. 2009-297370), it has a plurality of rotatable connecting portions and a connecting pipe, and the turning connecting portions can be connected in both the upper and lower directions. A vacuum cleaner with an attached suction mouth has been proposed. In use, this accessory inlet is connected to the tip of the extension pipe instead of the floor inlet, and by changing the connection direction of the rotating connection part above the high shelf or refrigerator, A narrow gap such as under a desk with a narrow space from the floor surface can be cleaned, and when stored, it can be engaged with the side surface of the extension pipe.

  In addition, as disclosed in Non-Patent Document 1 (Hitachi Appliances Co., Ltd., issued in February 2010 “HITACHI, Cleaner, General Catalog, 2010-2”, page 7-8), it has two joints, A vacuum cleaner has been proposed that has a tube between one joint that can be expanded and contracted, and an attached suction port that has a brush that can rotate in a direction parallel to the suction port (opening) surface at the tip. When the accessory suction port is used, the distal end has a substantially T-shape to improve cleaning efficiency and stability, and when stored, the distal end has a substantially I-shape and can be engaged with the side surface of the extension pipe.

  Further, as disclosed in Patent Document 6 (Japanese Patent Application Laid-Open No. 2009-261432), a plurality of rotatable connecting portions and an extendable connecting pipe are provided, and a notch mechanism is provided in the turning connecting portion. A vacuum cleaner having an attached suction port that can be released by pressing a release button and that is pushed back to a predetermined position by an urging means has been proposed.

JP 2000-300484 A JP 2002-253456 A JP 2007-44267 A JP 2009-66332 A JP 2009-297370 A JP 2009-261432 A

Hitachi Appliances, Ltd., February 2010 "HITACHI, Cleaner, General Catalog 2010-2", pages 7-8

  However, in the electric vacuum cleaner described in Patent Document 1, since the extension pipe bending attachment as the rotating part is only between the grip part and the extension pipe, a heavy extension pipe is required for cleaning high places. The floor suction tool must be lifted to the same height as the upper surface of the high place, and the position of the operation handle is high. In addition, when a simple brush suction tool is used instead of the floor suction tool, the extension pipe and the operation handle must be cleaned while being lifted to a higher position so that the brush surface is pressed against the upper surface of the high place. There is a problem.

  Also, in the vacuum cleaner described in Patent Document 2, since a pivotable joint is provided between the upper extension pipe and the lower extension pipe, a heavy extension pipe and floor are required for cleaning high places. It is necessary to lift the suction tool to the same height as the upper surface of the high place, and it is forced to clean while raising the arm, and the physical burden is large.

  Moreover, in the vacuum cleaner of the said patent document 3, in a high place cleaning, since a connection pipe contacts a cleaning location, only the length of a suction inlet part can be cleaned with respect to depth, furniture and The back of the refrigerator was not cleanable.

  Moreover, in the vacuum cleaner of the said patent document 4, there was no joint mechanism in the attached suction tool, and it was difficult to clean a high place.

  Further, in the vacuum cleaner described in Patent Document 5, since the brush at the tip of the attached suction port is long in the axial direction, the cleaning efficiency is reduced when the user reciprocates the front and back, Or, when the user reciprocates left and right, the pipe portion is bent and becomes unstable, and the operability is also lowered.

  Moreover, in the vacuum cleaner of the said nonpatent literature 1, there are two joint mechanisms in an attached suction mouth, and by adjusting this angle, depth is high in high places, such as a high shelf, a refrigerator, and a ceiling surface. A certain place can be cleaned. In order to adjust the angle of the joint mechanism, the user uses both hands to refract the tube portion. At this time, since there is no lock mechanism after the angle adjustment, there is a problem that the angle is arbitrarily shifted during cleaning. If the notch force is increased so that the angle does not easily shift, it is great for refracting the joint mechanism. It was necessary to apply force.

  Moreover, in the vacuum cleaner of the said patent document 6, since the notch mechanism of an attached suction mouth is contact | abutted with the force which can hold | maintain a rotation angle, the notch mechanism (notch ring) after cancellation | release is predetermined. A large biasing force was required to push back to the position, and a greater force had to be applied to push the release button.

  The objective of this invention is providing the vacuum cleaner which improved the cleaning efficiency or operativity in the suction tool which can be bent by a some joint mechanism.

In the present invention, the suction tool is formed to be bendable by a plurality of joint mechanisms, and the suction tool is formed to be bendable by a plurality of joint mechanisms, and the bend is locked and used in at least one of the joint mechanisms. Provided with a lock mechanism capable of releasing the bending lock by the user's operation, the lock mechanism releasing the bending lock by the user's operation, and an urging means for urging the release button in the locking direction. The release button is formed on one joint of the joint mechanism, and the lock mechanism is formed on at least one lock protrusion formed on the release button and the other joint of the joint mechanism. A locking groove corresponding to the locking protrusion, and the locking mechanism is configured such that when the release button moves along the rotation axis direction of the joint mechanism, the locking protrusion and the locking protrusion are moved. Unlocks out the fitting of the groove and by which the release button is returned by the biasing means, the locking protrusion and the locking groove and is fitted to lock, the lock groove and the lock projection At least one of the abutting side surfaces is trapezoidal or triangular.

  According to the present invention, since the joint mechanism of the suction tool is provided with the lock mechanism, the wobbling of the joint mechanism can be reduced, the operability can be improved, and the rotation angle can be easily adjusted during use. it can.

  Moreover, according to this invention, since a brush part can rock | fluctuate with respect to a suction opening part, since a brush part follows the cleaning surface which is not flat, cleaning efficiency can be improved.

The perspective view of the suction tool which concerns on one Example of this invention. The exploded view of the rotation connection part by the side of the hand which concerns on one Example of this invention. The P view of the eaves-shaped cover which concerns on one Example of this invention. Sectional drawing of the rotation connection part by the side of the hand which concerns on one Example of this invention. The partial cross section perspective view of the rotation connection part by the side of the hand which concerns on one Example of this invention. Sectional drawing of the suction tool which concerns on one Example of this invention. The perspective view of the cancellation | release button of the rotation connection part by the side of the hand which concerns on one Example of this invention. The perspective view of the cover body by the side of the lock mechanism of the rotation connection part by the side of the hand which concerns on one Example of this invention. The perspective view of the connecting pipe which concerns on one Example of this invention. The perspective view at the time of extension of the connecting pipe concerning one example of the present invention. The stopper sectional view of the connecting pipe concerning one example of the present invention. Sectional drawing at the time of stopper pushing of the connecting pipe concerning one example of the present invention. The exploded view of the rotation connection part of the front end side which concerns on one Example of this invention. The perspective view at the time of rotation and extension of the suction tool which concerns on one Example of this invention. The example figure of the high place cleaning which concerns on one Example of this invention. The perspective view at the time of isolation | separation of the suction tool which concerns on one Example of this invention. The perspective view at the time of isolation | separation of the suction tool which concerns on one Example of this invention. (Reverse assembly) An example figure of ceiling cleaning concerning one example of the present invention. An example figure of floor surface cleaning concerning one example of the present invention. The external appearance perspective view of the vacuum cleaner which concerns on one Example of this invention. The external appearance perspective view and cross-sectional view of the rotation connection part of the front end side which concern on one Example of this invention. The cross-sectional view of the rotational connection part of the front end side which concerns on one Example of this invention. The external appearance perspective view and upper cross-sectional view of the rotation connection part of the front end side which concern on one Example of this invention. The top view and upper cross-sectional view of the suction tool which concern on one Example of this invention. The perspective view at the time of isolation | separation of the suction inlet formation part which concerns on one Example of this invention. The external appearance perspective view of the suction port formation part which concerns on one Example of this invention, a longitudinal cross-sectional view, and a cross-sectional view. The perspective view at the time of decomposition | disassembly of the suction inlet formation part which concerns on one Example of this invention. The external appearance perspective view when the rotation connection part of the front end side which concerns on one Example of this invention is connected to the hand operation part.

  The present invention includes a suction tool that can be connected to the other end side of the hand operating part or the extension pipe, and the suction tool is a connecting pipe that can be connected to the other end side of the hand operating part or the extension pipe (for example, a root side circuit). Dynamic connection portion and connection pipe) and a substantially T-shaped second suction body (for example, a rotation connection portion) connectable to the connection pipe, and the suction tool can be bent by a plurality of joint mechanisms. It is characterized by. According to the present invention, since the second mouthpiece is substantially T-shaped, the cleaning efficiency can be improved without causing a decrease in operability. In particular, since the suction tool including the connecting pipe connected to the second suction body has a plurality of joint mechanisms, a high place can be cleaned and the cleaning range can be expanded. Moreover, since the 2nd suction mouth body is provided with a some joint mechanism, a user's convenience can be improved.

  Further, the present invention has a substantially T-shape that can be connected to the other end side of the hand operating part or the extension pipe, or can be connected to the other end side of the hand operating part or the extension pipe via a connecting pipe different from the extension pipe. A second mouthpiece (for example, a rotating connection portion) is provided, and the second mouthpiece can be bent by a plurality of indirect mechanisms. According to the present invention, since the second mouthpiece is substantially T-shaped, the cleaning efficiency can be improved without causing a decrease in operability. In particular, since the suction tool including the connecting pipe connected to the second suction body has a plurality of joint mechanisms, a high place can be cleaned and the cleaning range can be expanded. Moreover, since the 2nd suction mouth body is provided with a some joint mechanism, a user's convenience can be improved.

  Further, the present invention provides a second mouthpiece that can be connected to the other end side of the hand operating portion or the extension pipe, or can be connected to the other end side of the hand operating portion or the extension pipe via a connecting pipe different from the extension pipe. (For example, a rotational connection portion), and the opening end of the connection pipe that forms the suction mouth for the clearance is inserted into the connection-side opening end of the second suction body, so that the connection pipe, the second suction body, Are connected, and the connection side opening end of the second mouthpiece is inserted into the opening on the other end side of the hand operation portion or extension tube, so that the hand operation portion or extension tube and the second mouthpiece body are connected. It is characterized by being. According to the present invention, since the second suction body can be connected to the hand operating portion or the extension pipe and the connection pipe forming the suction mouth for the clearance, the user convenience can be improved.

  Further, the present invention has a substantially T-shape that can be connected to the other end side of the hand operating part or the extension pipe, or can be connected to the other end side of the hand operating part or the extension pipe via a connecting pipe different from the extension pipe. A second mouthpiece (for example, a rotating connection portion) is provided, and the second mouthpiece has a width in the longitudinal direction of the mouthpiece forming portion that is shorter than the width in the longitudinal direction of the first mouthpiece. The width in the short direction of the mouthpiece forming part of the body can be connected to the other end side of the hand operating part or the extension pipe, or connected to the other end side of the hand operating part or the extension pipe via a connecting pipe different from the extension pipe It is characterized by being approximately equal to or shorter than the possible joint pipe width. According to the present invention, the width in the short-side direction of the mouthpiece forming portion of the second mouthpiece is substantially equal to or shorter than the width of the joint pipe, so when storing as a substantially I-shape of the second mouthpiece, Storability can be improved. In addition, stability during storage can be improved.

  In the present invention, at least one of the joint mechanisms of the suction tool that can be bent by a plurality of joint mechanisms is provided with a lock mechanism that can lock the bend and release the bend lock by a user's operation. Features. According to the present invention, since the joint mechanism of the suction tool is provided with the lock mechanism, the wobbling of the joint mechanism can be reduced, the operability can be improved, and the rotation angle can be easily adjusted during use. it can.

  Further, the present invention provides a connection tube connectable to the other end side of the hand operation part or the extension pipe, and a suction pipe connectable to the other end side of the hand operation part or the extension pipe. A second suction body having a shape, and the second suction body includes a suction part formed on the connection pipe side and a brush part formed on the opening part of the suction part opposite to the connection pipe side. The brush portion is formed so as to be swingable with respect to the suction port portion. According to the present invention, since the brush portion follows a non-flat cleaning surface, the cleaning efficiency can be improved.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 20 is an external perspective view of a vacuum cleaner according to one embodiment of the present invention. In FIG. 20, 10 is a vacuum cleaner main body provided with an electric blower for generating a suction force and a dust collecting portion, 11 is a hose having one end connected to the cleaner main body 10 via a hose joint 11a, Communicate. Reference numeral 12 denotes a hand operation unit having a switch operation unit 12a, one end of which is connected to the other end of the hose 11 and turns on and off the electric blower. Reference numeral 13 denotes an extension tube that is connected to the other end of the hand operating portion 12 and can be extended and contracted, 14 is a mouthpiece connected to the other end of the extension tube 13, and 15 is a connection between the extension tube 13 and the mouthpiece 14. It is a mouthpiece connected between or between the hand operating section 12 and the extension pipe 13. A suction passage is formed in each of the hose 11, the hand operating section 12, the extension pipe 13, the suction body 14, and the suction body 15, and the suction body 14 and the dust collecting part of the cleaner body 10 communicate with each other. When the user operates the switch operation unit 12a and the electric blower starts operation, a suction force is generated. This suction force reaches the suction body 14, and the dust sucked from the suction body 14 passes through the extension tube 13, the hand operation section 12, and the hose 11 and is collected in the dust collection section of the cleaner body 10. The suction body 14 has a rotating brush that rotates by suction flow or that rotates electrically, in the suction opening (opening), and is mainly used for floor cleaning. The mouthpiece 15 has a brush around the mouthpiece (opening), and is mainly used for cleaning a gap in furniture, an upper part of furniture, or an air conditioner. However, the mouthpiece 15 is not an essential configuration.

  The hand operating part 12 and the extension pipe 13, the extension pipe 13 and the mouthpiece 14, and the hand operating part 12 and the extension pipe 13 and the mouthpiece 15, the extension pipe 13, the mouthpiece 14 and the mouthpiece 15 are detachably connected. Has been. In the case of cleaning such as wooden floors, tatami mats, and carpets, cleaning is performed with the hand operating section 12, the extension pipe 13, and the mouthpiece 14 connected. When cleaning the gap of furniture or the upper part of the furniture or the air conditioner, the extension pipe 13 is removed from the hand operating section 12 or the mouthpiece 14 is removed from the extension pipe 13, and the mouthpiece 15 is connected to the hand operating section 12 or the extension pipe 13. Or the attached suction tool 100 (FIG. 1) is connected and the cleaning according to the objective is performed. Hereinafter, in the present embodiment, a vacuum cleaner suction tool 100 that is particularly effective for cleaning high places such as an upper part of furniture or an air conditioner will be described, but the place to be cleaned is not limited to high places.

  FIG. 1 is an overall external view of a vacuum cleaner suction tool 100 according to an embodiment of the present invention. The vacuum cleaner suction tool 100 is composed of a rotary connection part 200 on the hand operating part 12 or the extension pipe 13 side (base side), an intermediate connection pipe 300, and a rotary connection part 400 on the distal end side. ing. The intermediate connection pipe 300 is located between the rotation connection part 200 and the rotation connection part 400, and can extend and contract in the axial direction. However, the expansion and contraction of the connecting pipe 300 is not an essential configuration, and the connecting pipe 300 may not expand and contract. The rotation connection part 200 and the rotation connection part 400 have a joint mechanism that can rotate (bend) in the axial direction. Although the rotation connection part 200 has one joint mechanism and the rotation connection part 400 has two joint mechanisms, it is not limited to this number. When the mouthpiece 14 is a first mouthpiece, the rotational connection portion 400 forms a second mouthpiece. The mouthpiece 15 can be further connected to the connection portion of the extension tube 13 and the connection portion of the mouthpiece 14 at the mouth end (opening) end. The mouthpiece 14 has a connection portion of the extension tube 13 at the mouth end (opening) end. Connection is impossible, and the rotation connection part 400 cannot connect the connection part of the extension pipe 13 or the connection part of the suction body 14 to the mouth end (opening) end. Here, the axis in the axial direction refers to the central axis of the connection pipe 300 formed in a substantially cylindrical shape.

  FIG. 2 is an exploded perspective view of the rotational connection part 200. As shown in FIG. 2 (A), the rotation connecting portion 200 on the hand operating portion 12 or the extension tube 13 side has a substantially cylindrical shape communicating with the hand operating portion 12 or the extension tube 13 with the hand operating portion 12 or the extension tube 13. A rear joint (tube) 201 composed of a cylindrical portion 205 and a flange-shaped portion 206 that opens in a direction perpendicular to the axial direction of the cylindrical shape portion 205; a flange-shaped cover 204 that faces the flange-shaped portion 206; It is composed of a substantially cylindrical tube-shaped portion 207 communicating with the connecting tube 300 and a front joint (tube) 202 including a barrel-shaped portion 208 having an axis perpendicular to the axial direction of the tube-shaped portion 207. The axis of the barrel-shaped portion 208 serves as a rotation axis for the rear joint 201 to rotate with respect to the front joint 202. A flow path is formed inside the barrel-shaped portion 208. The rotation axis of the barrel-shaped portion 208 does not penetrate through the barrel-shaped portion 208, but is formed one by one on the outer side of the side surface of the barrel-shaped portion 208 (two in total). Therefore, it is possible to prevent the air flowing through the flow path in the barrel-shaped portion 208 from being obstructed by the rotation axis of the barrel-shaped portion 208. The cylindrical portion 207 is connected to the intermediate connecting pipe 300. That is, one end of the rear joint 201 can be connected to the hand operation unit 12 or the extension pipe 13, and one end of the front joint 202 can be connected to the connection pipe 300. Then, the other end of the rear joint 201 and the other end of the front joint 202 are rotatably connected. It should be noted that the opening end of the cylindrical portion 205 opposite to the flange-shaped portion 206 is inserted inside and contacted with the opening end of the hand operation portion 12 or the extension tube 13 so that the flange-shaped portion 206 becomes the hand operation portion. 12 or the extension pipe 13. Therefore, the outer surface diameter of the opening end of the cylindrical portion 205 opposite to the flange-shaped portion 206 is gradually narrowed toward the tip, and the outer surface diameter in the middle of the narrowing is the hand operating portion 12. Or it is preferable to correspond (coincide) with the inner surface diameter of the open end of the extension pipe 13.

  The barrel-shaped portion 208 of the front joint 202 has a shape in which the flange-shaped portion 206 of the rear joint 201 and the inner surface of the flange-shaped cover 204 are substantially offset, and can slide on the flange-shaped portion 206 and the flange-shaped cover 204 ( It is assembled in contact with the movable). The hook-shaped portion 206 and the hook-shaped cover 204 have cutout portions 209 and 210, respectively, and the front joint 202 can rotate between the upper end 211 and the lower end 212 of the cutout portion. As shown in FIG. 2B, on the side opposite to the side where the front joint 202 abuts on the flange-shaped portion 206, a substantially circular release button 220 and release button 220 that constitute a lock mechanism that holds the rotation angle. A substantially ring-shaped lid body 221 having a hole into which the release button 220 is inserted and an urging means 222 for the release button 220 are disposed. The urging means 222 urges the release button 220 outward. The urging means 222 is, for example, a coil spring, but may be another elastic body as long as it urges the release button 220 to the outside. However, the lid 221 is not an essential configuration, and has a hole into which the release button 220 is inserted in the bottom surface of the bowl-shaped part 206, and the release button 220 and the biasing means 222 are provided between the bowl-shaped part 206 and the front joint 202. May be arranged. The side of the barrel-shaped portion 208 of the front joint 202 that contacts the flange-shaped portion 206 has a detent rail 223 that protrudes from the outer periphery toward the center, and the detent rail 223 is opened on the bottom surface of the flange-shaped portion 206. Through the hole formed, the hook-shaped portion 206 protrudes toward the side where the release button 220 is disposed, and is inserted into a detent groove 224 formed on the outer peripheral side of the release button 220. The lid 221 is inserted into the central hole with the release button 220, the release button 220 is exposed to the outside, and is fixed to the hook-shaped portion 206 against the force of the urging means 222. Is configured to rotate together with the front joint 202 and the lid body 221 together with the rear joint 201. A notch ring 203 that generates a notch feeling (click feeling) that informs the rotational angle position is disposed between the front joint 202 and the saddle-shaped cover. The notch ring 203 has an annular shape and has an anti-rotation protrusion 213 on the inner periphery, and a notch protrusion 214 (protrusion) that generates a notch feeling (click feeling) on the outer periphery. The barrel-shaped portion 208 is inserted into a rotation-preventing groove 215 provided on the bottom surface of the barrel-shaped portion 204 on the side where it comes into contact, and is rotated together with the front joint 202. However, since it is such a structure, the rotation range of the rear joint 201 and the front joint 202 is limited to a predetermined range, not 360 degrees.

  As described above, in this embodiment, the lock mechanism is provided in the joint mechanism (the rotation connecting portion 200) on the hand operating portion 12 or the extension tube 13 side (the root side) among the plurality of joint mechanisms. Since the user has (supports) the hand operating unit 12 or the extension tube 13 side (root side) at the time of cleaning, the joint mechanism on the root side is more distal than the joint mechanism on the tip side. Since the load applied to the side becomes larger, the wobbling of the joint mechanism on the base side becomes larger than that of the joint mechanism on the tip side. Therefore, in the present embodiment, the wobbling is effectively prevented by providing a lock mechanism in the joint mechanism (the rotation connecting portion 200) on the hand operating portion 12 or the extension tube 13 side (root side) among the plurality of joint mechanisms. Can be suppressed.

  As shown in FIG. 3, a substantially circular rib 216 that pushes the notch protrusion 214 on the outer periphery of the notch ring 203 and deflects the notch ring 203 is formed on the inner bottom surface of the saddle-shaped cover 204, and the circular rib 216 includes a notch ring. A recess 217 that does not push the notch protrusion 214 on the outer periphery of 203 is formed at a predetermined angle. As a result, the rear joint 201 and the front joint 202 can rotate about the central axes of the bowl-shaped portion 206 and the barrel-shaped portion 208, and the notch ring 203 has the notch projection 214 within the recessed portion 217 of the substantially circular rib 216. When the front joint 202 is rotated, the notch ring 203 rotates together with the front joint 202, and the notch protrusion 214 rides on the recessed portion 217 and bends in the radial direction of the ring and rotates while contacting the substantially circular rib 216. The movement reaches the recess 217 of the moving destination, and the deflection is released and fits in the recess 217, and the rotation angle position is fixed to some extent by this fit.

  In the present embodiment, the number of notch protrusions 214 is two and the number of recesses 217 is two, but the present invention is not limited to this configuration. Concerning the installation of the notch ring 203, the groove 215 for inserting the notch ring 203 may be formed in the saddle-shaped cover 204 and the circular rib 216 for bending the notch ring 203 may be formed in the front joint 202. Further, the notch ring 203 may be on the side where the rear joint 201 and the front joint 202 abut. In that case, the lock mechanism is formed on the side of the saddle-shaped cover 204. In addition, the method of generating the notch feeling is not limited to the method of the present example. For example, if a coil spring is used instead of the ring and a steel ball is used instead of the notch projection, the same effect can be obtained. .

  FIG. 4A shows a cross-sectional view of the lock mechanism in the locked state, and FIG. 4B shows a cross-sectional view of the lock mechanism in the unlocked state. As shown in FIG. 4A, the release button 220 is urged by an urging means 222 such as a spring in a direction in which the lock protrusion 225 fits into a lock groove 226 formed in the lid 221. The rotation angle (bending angle) is fixed by the fitting of the protrusion 225 and the lock groove 226. As shown in FIG. 4B, while the user presses the release button 220 against the urging of the urging means 222, the lock protrusion 225 is separated from the lock groove 226 of the lid 221 and is not fitted. Therefore, the joint mechanism can be rotated. At this time, since the rotation angle is fixed to some extent by the notch mechanism, there is little risk of inadvertent rotation and pinching or bumping of hands or fingers. In addition, the user can rotate in a stepwise manner by a notch feeling (click feeling) at the time of rotation, so that the user can adjust to a desired angle without hesitation. Since the lock mechanism is formed outside the side surface of the barrel-shaped portion 208, that is, outside the wall surface that forms the flow path, the air flowing through the flow path in the barrel-shaped portion 208 can be prevented from being inhibited.

  FIG. 5A shows a partial cross-sectional perspective view of the lock mechanism when the joint portion is linear in the locked state, and FIG. 5B shows a partial cross-section of the lock mechanism when the joint portion is rotated in the unlocked state. A perspective view is shown. In the present embodiment, the lock grooves 226 of the lid 221 are arranged at intervals of 22.5 degrees so that the rotation angles of the joints are three stages of 0 degrees, 22.5 degrees, and 45 degrees. However, it is not limited to this configuration. Further, the contact side surfaces of the lock protrusion 225 of the release button 220 and the lock groove 226 of the lid 221 are not parallel to the rotation axis direction but are inclined at a predetermined angle with respect to the rotation axis direction. doing. Therefore, when a certain large turning force is applied in a locked state in which the lock protrusion 225 is engaged with the lock groove 226 by the biasing means 222, the contact side surface (inclined surface) of the lock protrusion 225 and the lock groove 226 is changed. Since the release button 220 starts to slide and moves against the urging force of the urging means 222, the lock protrusion 225 is separated from the lock groove 226, so there is no possibility of damage when an excessive force is applied. However, it is not essential that the shape of the lock protrusion 225 and the lock groove 226 is trapezoidal. If either one of the lock protrusion 225 or the lock groove 226 at the contact portion forms an inclined surface, the other may be an upright surface. Good. Also, a triangle may be used instead of a trapezoid.

6A is a cross-sectional view taken along the line AA of FIG. 1 when the rotation connecting portion 200 is linear, and FIG. 6B is a view when the rotation connecting portion 200 is rotated 45 degrees. The AA sectional view of Drawing 1 of suction tool 100 is shown. The arrows in FIG. 6 indicate the flow of air flowing through the suction passage formed inside the suction tool 100 when in use, and the intersection of the alternate long and short dash line indicates the center of the rotation axis of the rotation connection portion 220. At this time, since the lock mechanism by the release button 220, the lid 221 and the urging means 222 is provided substantially coaxially with the rotation shaft of the joint mechanism, as shown in FIG. It is possible to maintain the suction force without hindering. According to this configuration, the heights of the lock protrusion 225 of the release button 220 and the lock groove 226 of the lid 221 are regulated by the suction passage inside the joint mechanism, the width of the joint mechanism, and the movement range of the release button 220. .
Since the suction passage is related to the suction force, it is necessary to secure a certain area, and the width dimension of the joint mechanism needs to be less than the predetermined dimension so as not to hinder the cleaning of narrow spaces such as gaps in furniture. is there. The movement range of the release button 220 needs to be a certain value or more so that the user does not have a risk of releasing the lock by mistake, and is set to 4 mm in this embodiment. In addition, the width (in the radial direction) of the lock protrusion 225 and the lock groove 226 is regulated by the diameter of the hook-shaped part 206 of the rotary connecting part 220, but the hook-shaped part 206 is used for cleaning narrow spaces such as gaps in furniture. It is necessary to make it not more than a predetermined dimension so as not to interfere. The lock protrusion 225 and the lock groove 226 are located in the vicinity of the rotation shaft of the joint mechanism, and an excessive force may be applied when the suction tool 100 is used. However, the lock protrusion 225 and the lock groove 226 Since it is difficult to secure an area that can withstand stress on the contact surface, it is preferable to disperse the stress by providing a plurality of contact portions between the lock protrusion 225 and the lock groove 226. There are 4 contact points.

  As shown in FIG. 7, the release button 220 includes a button portion 227 that the user presses when unlocking, and a circular flange portion 228 that has the same center as the central axis of the release button 220. The flange portion 228 has an anti-rotation groove 224 on the outer periphery, and a lock projection 225 is formed on the upper surface on the button portion 227 side. In this embodiment, two anti-rotation grooves 224 are provided at positions opposed to each other with the center axis of the release button 220 as the center, and the lock protrusions 225 have four equal intervals around the center axis of the release button 220. There are places. In addition, the anti-rotation groove 224 has an auxiliary wall 229 that extends the shape of the anti-rotation groove 224 along the anti-rotation rail 223 of the front joint 202 for the purpose of preventing malfunction due to deviation when the release button 220 is operated. For the same purpose, the button portion 227 has a cylindrical shape, and the flange portion 228 has a circular shape. Further, the lock protrusion 225 and the rotation preventing groove 224 are set at different positions in the circumferential direction. In addition, the height of the lock protrusion 225 from the flange portion 228 is lower than the height of the release button 220 from the flange portion 228.

  As shown in FIG. 8, the lid 221 has a central hole into which the button part 227 of the release button 220 is inserted, and a plurality of lock grooves 226 arranged around the center hole. And a claw 230 that engages with the hook-shaped portion 226. In this embodiment, four nails 230 are arranged at equal intervals. The lock groove 226 is formed between each of the plurality of substantially trapezoidal peaks. The lock groove 226 is formed in a portion excluding the claw 230 in the circumferential direction.

  A connecting portion of the hand operating portion 12 or the extension pipe 13 can be connected to the cylindrical portion 205 of the rear joint 201 shown in FIG. 2, and the attachment / detachment clamp provided on the hand operating portion 12 or the extension pipe 13 is removed. A recessed portion 218 for receiving a pawl (not shown) for stopping is provided on the outer surface of the tubular portion 205 on the side of the flange-shaped portion 206. In addition, the connecting pipe 300 can be connected to the cylindrical portion 207 of the front joint 202 by a connecting portion 305, and there are two holes 219 extending in the circumferential direction for receiving the protrusion 305 for preventing the connecting pipe from coming off.

  As shown in FIGS. 9 and 10, the connecting pipe 300 includes a hollow sheath body 301 (outer pipe) and a hollow blade body 302 (inner pipe) that are retractable. The cross-sectional shape of the connection part 305 of the sheath body 301 is substantially circular, and the cross-sectional shape of the sheath body 301 other than the connection part 305 is substantially square. Recessed portions 309 are formed at equal intervals on the outer lower surface of the blade body 302. A stopper 303 is provided at the end of the sheath body 301 on the side where the blade body 302 extends and retracts so as to be rotatable in the radial direction by a shaft 304. Retaining protrusions 305 are formed on the outer periphery of the other end side (connecting portion 305) of the sheath body 301. Retaining protrusions 306 extending in the direction perpendicular to the axial direction are also formed on both side surfaces of the distal end portion of the blade body 302. Is formed. Two retaining protrusions 306 are formed on both side surfaces, even in the axial direction. One retaining protrusion 306 may be provided on each side surface, or three or more retaining protrusions 306 may be provided. The distal end of the blade body 302 has the narrowest width in the suction tool 100 and is formed so as to be inclined (tapered) from the distal end toward the lower side of the other end. With the connecting pipe 300 connected to the operation unit 12 or the extension pipe 13, the gaps and the like can be cleaned. That is, the tip of the blade body 302 forms a clearance inlet (nozzle). Further, the leading end of the blade body 302 serves as a connection portion with the rotational connection portion 400, and a retaining protrusion 306 is formed at the connection portion when the blade body 302 is connected to the rotational connection portion 400. As in the present embodiment, it is preferable that the user can easily separate the connection tube 300 and the rotation connection portion 200, but the user can easily separate the connection tube 300 and the rotation connection portion 200 from each other. A non-separable connection structure may be used.

  11 and 12 show the configuration of the stopper 303. As shown in FIGS. 11 and 12, the stopper 303 is urged by an elastic body 307 such as a spring in a direction in which the claw portion 308 fits into a plurality of recessed portions 309 formed on the outer surface of the blade body 302. The expansion / contraction position of the blade body 302 is fixed. While the user presses the stopper 303 with a finger against the bias of the elastic body 307, the claw portion 308 is separated from the recessed portion 309 of the blade body 302, so that the blade body 302 can be freely expanded and contracted. .

FIG. 13 shows the configuration of the rotational connection unit 400. FIG. 21A shows an external perspective view of the rotational connection portion 400 in a substantially T shape, and FIG. 21B shows a cross-sectional view of the BB cross section of FIG.
FIG. 22 is a cross-sectional view taken along the line BB in FIG. FIG. 23A shows an external perspective view of the rotational connection portion 400 in a substantially T-shape, and FIG. 23B shows a cross-sectional view of the CC cross section of FIG. As shown in FIG. 13, the rotational connecting portion 400 on the distal end side includes a cylindrical portion 406 that receives the distal end portion (connecting portion) of the blade body 302 of the connection pipe 300, and a rotational base portion 407 having a substantially circular cross section. A rear joint (tube) 401 composed of the above, a front joint (tube) 402 composed of a rotating portion 408 having a substantially circular cross section and a cylindrical portion 409, and a turn facing the rotating portion 408 of the front joint 402. A rotating shaft body (joint member) 424 connected by a moving cover 405, a lid body 404, a connecting hole 423 that pivotally supports a shaft protrusion 427 of the front joint 402, and a rotation connecting with the rotating shaft body 424. It is comprised from the suction inlet formation part 426 which provided the processus | protrusion 425. FIG. The rotation part 408 and the rotation cover 405 of the front joint 402 are assembled so as to be slidable with respect to the rotation base part 407 so as to cover the rotation base part 407 of the rear joint 401. A cylindrical shaft protrusion 427 is provided on both side surfaces of the end of the front joint 402 opposite to the rotating portion 408, and a cylindrical slide protrusion 428 is provided above the shaft protrusion 427.

  The pivoting portion 408 and the pivoting cover 405 of the front joint 402 have notches 410 and 411, respectively. The front joint 402 is a time until the upper end portion 412 and the lower end portion 413 of the notch portion abut against the rear joint 401. Can be rotated. A notch ring 403 that generates a notch feeling that informs the rotation angle position is arranged between the rotation base portion 407 and the rotation portion 408. The notch ring 403 has the same shape as the notch ring 203, has a non-rotating projection 414 and a notch projection 415 (protrusion), and is inserted into a detent groove 416 provided on the side surface of the rotation base portion 407 of the rear joint 401. It is.

  The rotating portion 408 of the front joint 402 has a substantially circular hole 417 that pushes the notch protrusion 415 on the outer periphery of the notch ring 403 and deflects the notch ring 403, and the circular hole 417 has a notch protrusion on the outer periphery of the notch ring 403. A recess 418 that does not push 415 is formed at a predetermined angle. Further, a claw hole 419 is formed in the rotating portion 408, and the claw 420 is fitted and fixed to the lid 404.

  As a result, the rear joint 401 and the front joint 402 can rotate about the central axes of the rotation base portion 407 and the rotation portion 408, and the notch ring 403 has the notch protrusion 415 in the recess 418 of the substantially circular hole 417. When the front joint 402 is rotated, the notch protrusion 415 rides on the recess 418 and bends in the radial direction of the ring, reaches the recess 418 at the rotation destination while contacting the substantially circular hole 417, and the deflection is It is released and fits in the recess 418, and the rotational angle position is fixed to some extent by this fit.

  In the present embodiment, the number of the notch protrusions 415 is two and the number of notches is two, but the present invention is not limited to this configuration. Concerning the installation of the notch ring 403, contrary to the present embodiment, a groove 416 for inserting the notch ring 403 may be formed in the front joint 402, and a substantially circular hole 417 for bending the notch ring 403 may be formed in the rear joint 401. . Further, the notch ring 403 may be provided on the side where the rear joint 401 and the rotation cover 405 are in contact with each other. Further, if two are provided on both sides, the bending force applied to each notch ring can be dispersed. , Reliability can be improved. The method of generating the notch feeling (click feeling) is not limited to the method of this example. For example, if a coil spring is used instead of the ring and a steel ball is used instead of the notch protrusion, the same effect can be obtained. It is. However, because of such a structure, the rotation range of the rear joint 401 and the front joint 402 is limited to a predetermined range, not 360 degrees. On the left and right side surfaces of the rotating shaft body 424, there are formed a connecting hole 423 that is supported by the shaft protrusion 427 and connected to the front joint 402, and a sliding hole 429 that fixes the sliding protrusion 428 and positions the front joint 402. ing. The sliding holes 429 are formed above the connection holes 423 and two are formed on each side surface. A sliding portion that can be rotated in the direction of the upper surface of the front joint 402 toward the tip end with the connecting portion 432 formed by the shaft protrusion 427 and the connecting hole 423 as an axis, and has been accommodated in one sliding hole 429. The protrusion 428 rides on one sliding hole 429 and comes into contact with the side surface of the rotating shaft body 424 while bending outward, and fits into the other sliding hole 429 at the rotation destination, thereby rotating the front joint 402. The rotational angle position of the moving shaft body 424 is fixed. The suction port forming portion 426 can rotate 360 degrees with respect to the rotation shaft body 424. Then, as shown in FIGS. 24 (A) and 24 (B), the rotation connecting portion 400 is in a state where the longitudinal direction of the suction port forming portion 426 is substantially 90 degrees with respect to the axial direction of the rear joint 401 or the front joint 402. When viewed from above, the rotation connecting portion 400 is substantially T-shaped. As shown in FIGS. 24E and 24F, when the rotational connection portion 400 is viewed from above in a state where the longitudinal direction of the suction port forming portion 426 substantially matches the axial direction of the rear joint 401 or the front joint 402. The rotation connecting portion 400 is substantially I-shaped. As in Patent Document 4 and Non-Patent Document 1, when the suction tool 100 is attached to the side surface of the extension tube 13 and stored, the rotational connection portion 400 is preferably substantially I-shaped.

  As shown in FIG. 22, the inner surface of the suction port (opening) of the suction port forming portion 426 is inclined from the longitudinal end portion of the suction port forming portion 426 toward the center portion, and accordingly, the suction port forming portion 426 The outer surface (upper surface) on the opposite side of the suction port (opening) is also inclined from the longitudinal end of the suction port forming portion 426 toward the central portion, and has a trapezoidal shape in the cross section. That is, when the longitudinal direction of the suction port forming part 426 is viewed from the side, it is symmetrical. In addition, even if it looks at the transversal direction of the suction inlet formation part 426 from the side, it is left-right symmetric. Thus, since the inner surface of the suction port (opening) of the suction port forming portion 426 is inclined, the disturbance of the air flow from the suction port (opening) of the suction port forming portion 426 toward the vent hole 430 is reduced. Then, a rotation protrusion 425 is formed at the central portion in the longitudinal direction of the suction port forming portion 426 on the upper surface of the suction port forming portion 426 and the central portion in the short side direction of the suction port forming portion 426. A ventilation hole 430 is formed inside the rotation projection 425 so that ventilation is possible. The ventilation hole 430 has a substantially circular shape, and a plurality of rotation protrusions 425 are formed around the ventilation hole 430. The center of the circle formed with the plurality of rotation protrusions 425 becomes the rotation axis of the suction port forming portion 426 with respect to the rotation shaft body 424. Note that the center of the circle formed with the plurality of rotation protrusions 425 coincides with the center of the vent hole 430 and the center of the rotation hole 433. A one-dot chain line in FIG. 23B indicates a center line in the longitudinal direction of the mouthpiece forming portion 426 and a center line in the short direction of the mouthpiece forming portion 426. The rotation axis of the suction port forming portion 426 with respect to the rotation shaft body 424 is the center of the suction port forming portion 426 in the longitudinal direction and the center of the suction port forming portion 426 in the short direction, that is, as shown in FIG. It is preferable to be located at the intersection of the center line in the longitudinal direction of the forming part 426 and the center line in the short direction of the mouthpiece forming part 426. That is, the distance from the rotation axis of the suction port forming portion 426 to the rotation shaft body 424 to both end surfaces (end portions) in the longitudinal direction of the suction port formation portion 426 becomes equal, and the suction port formation portion 426 with respect to the rotation shaft body 424 has the same distance. The distance from the pivot axis to both end surfaces (end portions) in the short direction of the suction port forming portion 426 is equal. In this case, the rotational axis of the suction port forming portion 426 with respect to the rotational shaft body 424 exists on the axial center of the rear joint 401, the axial center of the front joint 402, or the axial center of the connecting pipe 300. Become. Accordingly, when the user performs the reciprocating operation of the suction tool 100 toward the front and the back and the reciprocating operation of the left and right, the movement of the rotary connecting portion 400 is stabilized, and thus the operability is improved.

  In FIG. 22, a thick alternate long and short dash line indicates the axial center of the cylindrical portion 406 of the rear joint 401, and a thin alternate long and short dashed line indicates the axial center of the cylindrical portion 409 of the front joint 402. The front joint 402 can be rotated upward to an angle α with respect to the rear joint 401. The angle α is about 5 to 10 degrees. Since the upper surface and the lower surface of the cylindrical portion 409 are substantially parallel, as shown in FIG. 22, when the front joint 402 is at an angle α on the upper side with respect to the rear joint 401, The formation direction and the formation direction of the lower surface are also directions that form an angle α upward with respect to the axial direction of the rear joint 401. In the state where the rotation connecting part 400 is substantially I-shaped, the upper surface of the suction port forming part 426 and the lower surface of the cylindrical part 409 are opposed to each other, and the interval between the upper surface of the suction port forming part 426 and the lower surface of the cylindrical part 409 It is preferably 0 or more and 5 mm or less. It is preferable that the upper surface of the suction port forming portion 426 and the lower surface of the cylindrical portion 409 are substantially parallel. In this case, the upper surface of the suction port forming portion 426 is in a direction that forms an angle α upward with respect to the axial direction of the rear joint 401. Therefore, the rotating shaft body 424 has the axial protrusion 427 as an axis with respect to the cylindrical portion 409 until the upper surface of the suction port forming portion 426 is in a direction that forms an angle α upward with respect to the axial direction of the rear joint 401. It is preferable to rotate. As described above, the rotation angle of the rotation shaft body 424 with respect to the cylindrical portion 409 can be determined by the mutual positional relationship between the connection hole 423 and the slide hole 429. When the suction port surface of the suction port forming portion 426 and the axial direction of the cylindrical portion 409 are substantially parallel, the angle formed between the upper surface of the suction port forming portion 426 and the suction surface of the suction port forming portion 426 is the angle α. Become. Further, as shown in FIG. 21, the longitudinal direction of the suction port forming portion 426 from the connecting portion (the center of the vent hole 430), that is, the longitudinal center of the suction port forming portion 426, of the suction port forming portion 426. The length to the end (end face), that is, ½ of the length in the longitudinal direction of the suction port forming portion 426 is the length in the axial direction of the cylindrical portion 409 or the suction port forming portion 426 of the cylindrical shape portion 409. The length from the rotation axis (center of the rotation hole 433) of the connecting portion to the end portion (end surface) of the cylindrical portion 409 on the rotating portion 408 side, or the rotation of the connecting portion with the inlet forming portion 426 of the front joint 402 It is preferable that the length is substantially equal to or shorter than the length of the connecting shaft between the moving shaft (center of the rotating hole 433) and the rear joint 401 of the front joint 402 (axial center of the rotating portion 408). Accordingly, the suction port of the suction port forming portion 426 can be brought closer from the communication axis direction, and the rotation connecting portion 400 and the suction tool 100 can be shortened in total length by arranging the suction port forming portion 426 rearward, so that it can be stored without being bulky. This can improve storage. It not only rotates in the axial direction between the rear joint 401 and the front joint 402 but also rotates in the axial direction between the front joint 402 and the rotary shaft body 424, and further between the rotary shaft body 424 and the suction port forming portion 426. Thus, since it rotates in a direction different from the axial direction, the storage property is improved. Further, since the center of gravity on the tip side of the front joint 401 is close to the axis of the front joint 402, the stability during storage is also increased.

  As shown in FIG. 23B, the suction port forming portion 426 is provided with a rotation protrusion 425 that is inserted into the rotation hole 433 on the bottom surface of the rotation shaft body 424 and connects the suction port formation portion 426. It can rotate in the axial direction. Like the notch ring 203 and the notch ring 403, the rotation protrusion 425 is formed with a notch protrusion 435 for generating a notch feeling that informs the rotation angle position, and is fitted in the recess 434 on the bottom surface of the rotation shaft body 424. Yes. When the suction port forming portion 426 is rotated, the notch projection 435 rides on the recessed portion 434 and bends in the radial direction of the rotation hole 433, and the deflection reaching the end of the substantially circular wall 436 while being in contact with the substantially circular wall 436 is released. The The next notch protrusion 435 is accommodated in the recess 434, and the rotational angle position is fixed to some extent by this accommodation. The notch protrusion 435 also serves as a retaining claw so that the suction port forming portion 426 does not come off the rotating shaft body 424.

  FIG. 24A shows a top view of the suction tool 100 when the rotation connecting portion 400 has a substantially T shape, and FIG. 24B shows a case where the rotation connecting portion 400 has a substantially T shape. FIG. 24C shows a top cross-sectional view of the suction tool 100 when the rotary connecting portion 400 is substantially T-shaped, and FIG. FIG. 24E shows a top cross-sectional view of the rotational connection portion 400 when the rotational connection portion 400 is substantially T-shaped, and FIG. 24E shows the suction tool 100 when the rotational connection portion 400 is substantially I-shaped. FIG. 24 (F) shows a top view of the rotational connection portion 400 when the rotational connection portion 400 is substantially I-shaped, and FIG. 24 (G) shows the rotational connection portion 400. FIG. 24H shows an upper cross-sectional view of the suction tool 100 when the rotary connection portion 400 has a substantially I shape. It shows a rear view. 24 (E), (F), (G), and (H), the width of the suction port forming portion 426 in the short side direction is the same as that of the connecting portion 431 formed by the rotation base portion 407, the rotation portion 408, and the like. It should be approximately the same or shorter than the width (width in the direction perpendicular to the axial direction). Further, the width of the suction port forming portion 426 in the short direction may be substantially equal to or shorter than the width of the rear joint 401 or the width of the front joint 402. Further, the width of the suction port forming portion 426 in the short direction may be substantially equal to or shorter than the maximum width of the connection pipe 300. Note that the maximum width of the connecting pipe 300 is formed in the connecting portion 305. As a result, when the suction tool 100 is engaged with the side surface of the extension pipe 13 and stored, the suction port forming portion 426 protrudes and does not get in the way, so that the storage property is improved. Further, the user rotates the suction port forming part 426 with respect to the front joint 402 so that the longitudinal direction of the suction port forming part 426 is along the axial direction of the rear joint 401 and the front joint 402, If the suction port forming portion 426 is substantially I-shaped, it is possible to clean a narrow gap that is deep inside. Further, the user rotates the suction port forming part 426 with respect to the front joint 402 so that the longitudinal direction of the suction port forming part 426 is perpendicular to the axial direction of the rear joint 401 and the front joint 402, If the suction mouth forming part 426 is rotated in a substantially T shape, the cleaning surface can be widened, and the number of times of back-and-forth can be increased because a large number of cleaning surfaces in the front-rear direction (front and back reciprocating directions) of the user can be taken. This can reduce the cleaning efficiency. Furthermore, since the width | variety of the longitudinal direction of the suction opening formation part 426 is shorter than the longitudinal direction of the suction body 14, the clearance gap which the suction body 14 does not enter can be cleaned. Further, since the friction surface in the left-right direction is smaller than that of the substantially I shape, the resistance is reduced, and the burden on the user's hand can be reduced.

  The tubular portion 406 of the rear joint 401 has a hole portion 421 that receives the retaining protrusion 306 at the tip of the blade body 302 of the connection pipe 300. The distal end portion (connecting portion) of the blade body 302 is inserted into the cylindrical portion 406 and the retaining projection 306 is fitted into the hole portion 421 (the outer surface of the distal end portion of the blade body 302 is the inner surface of the cylindrical portion 406). The connecting pipe 300 and the rotation connecting portion 400 are connected. As a result, the user can easily connect and disconnect the connecting pipe 300 and the rotary connecting portion 400.

  In FIG. 25, the perspective view at the time of isolation | separation of the suction inlet formation part 426 is shown. As in the present embodiment, a brush 422 can be planted on the end surface of the cut end portion on the suction port (opening) surface of the suction port forming portion 426, and a cleaning effect such as sweeping and wiping can be obtained by the brush 422. The direction in which the brush 422 is formed may be the normal direction of the suction surface of the suction port forming portion 426, or may extend outward from the normal direction of the suction surface of the suction port forming portion 426. Further, the suction port forming portion 426 can be structured to be divided into the brush bed 438 and the suction port portion 437. That is, the engaging claw 439 can be attached to the mouthpiece 437 by providing the brush table 438 with a plurality of engaging claws 439 and fitting the engaging claws 439 into the mouthpiece 437. As a result, when the brush 422 is deteriorated or missing, it is only necessary to replace the brush base 438, and the maintainability of the brush portion can be improved.

  26 shows an embodiment in which the brush base 451 is swingably attached to the suction port portion 454. FIG. 26 (A) is a perspective view of the suction port forming portion 450, and FIG. 26 (B) is FIG. 26C is a sectional view taken along line EE in FIG. 26A, and FIG. 27 is an exploded perspective view of the suction port forming portion 450. 25 is an embodiment in which the brush base 438 does not swing with respect to the suction portion 437. However, in the suction forming portion in FIGS. 26 and 27, the brush base 451 does not swing with respect to the suction portion 454. This is a working example. As shown in FIG. 26 (B), the brush base 451 and the suction port 454 are attached to the rotation shaft 452 provided on both side surfaces in the middle of the brush table 451 in the longitudinal direction, and both sides in the middle of the suction port 454 in the longitudinal direction. The structure is formed by fitting with a bearing 455 provided on the surface. The upper end portion of the brush base 451 is formed so as to fit within the opening at the lower end portion of the suction port portion 454. Thereby, the brush base 451 is pivotally supported by the suction port portion 454 so that the longitudinal direction of the brush table 451 can be swung, and the suction port (opening) surface of the brush 453 is used when the suction tool 100 or the rotary connection unit 400 is used. For example, it swings along the curve of the cleaning surface that is not flat such as the top or front of the air conditioner, or swings along the uneven surface such as the upper surface of books with different heights stored in the bookshelf, Since it follows the cleaning surface, it can be cleaned more efficiently. However, the surface provided with the rotation shaft 452 is not limited to both side surfaces in the longitudinal direction of the brush table 451, but both side surfaces in the short direction of the brush table 451, both side surfaces in the longitudinal direction of the suction port portion 454, or short side of the suction port portion 454. Any of both side surfaces in the direction may be used. Similarly, the surface including the bearing 455 is not limited to the both side surfaces in the longitudinal direction of the suction port portion 454, and corresponds to the position including the rotation shaft 452, the both side surfaces in the short side direction of the suction port portion 454, or the longitudinal direction of the brush table 451. Either the both side surfaces in the direction or both side surfaces in the short direction of the brush table 451 may be used. In addition, the position on the surface where the rotation shaft 452 and the bearing 455 can be provided is not limited to the center of each surface (side), and may be shifted to either one of both ends.

  In this embodiment, as shown in FIG. 26C, the brush base 451 has a leakage prevention wall 456 extending in the upper surface direction of the suction port 454 and a flange 457 extending outward from the outer surface of the brush base 451. FIG. 26D shows a state in which the brush base 451 swings and tilts to one side with respect to the suction port 454. At this time, on the rear end side (right end in the drawing) of the brush base 451, the upper surface of the brush base 451 is farthest from the lower end of the suction portion 454, but the upper end of the leakage prevention wall 456 is the lower inner surface of the suction portion 454. By being formed so as to be closest to the suction port, it is possible to reduce intake air leakage from between the brush base 451 and the suction port portion 454, and to suppress a decrease in suction force from the lower opening of the suction port formation portion 450. At this time, at the front end side in the rotational direction of the brush base 451 (the left end in the figure), the upper surface of the brush base 451 comes closest to the upper surface of the suction port 454 and at the same time, the side surface of the brush table 451 is the inner surface of the suction port 454. However, by forming the flange 457 along the lower end of the suction port 454, the suction leakage from the gap between the brush table 451 side surface and the suction port 454 is reduced, and the suction force from the lower opening of the suction port formation unit 450 is reduced. The decrease can be suppressed.

  FIG. 28 is an external perspective view when the distal end side rotation connecting portion 400 is connected to the hand operating portion 12. The cylindrical shape portion 406 of the rotation connection portion 400 includes an engagement portion 441 having a shape in which the upper side and the lower side of the outer surface correspond to the connection portion of the hand operation portion 12 or the inner surface of the extension tube 13, that is, an R shape. It is preferable that the upper side and the lower side of the outer surface of the engaging portion 441 gradually expand toward the rotation base portion 407 in the axial direction. The outer shape (diameter of the outer surface) on the opening side of the engaging portion 441 of the cylindrical portion 406 is smaller than the outer shape (diameter of the outer surface) of the engaging portion 441. And the cylindrical part 406 of the rotation connection part 400 is inserted in the connection part of the hand operation part 12, or the inner side of the extension pipe 13 like the cylinder shape part 205 of the rear joint 201, and the engaging part 441 is a hand operation part. 12 is in contact with the inner surface of the connecting portion or the extension tube 13, and is provided on the cylindrical portion 406, and a claw (not shown) for retaining the detachable clamp provided on the hand operating portion 12 or the extension tube 13. It fits in the recessed part 440 made. As a result, the rotation connecting part 400 and the hand operating part 12 or the extension pipe 13 are connected. Since the rotation connecting portion 400 can be used as a suction tool without being connected to the connecting pipe 300, it is possible to easily clean a familiar place such as a desk or a low shelf without being burdened with light weight.

  FIG. 15 shows an example of cleaning high places such as furniture using the suction tool 100 and the upper surface of the refrigerator. FIG. 14 shows a perspective view of the suction tool 100 in the state used in FIG. In FIG. 14, the proximal rotation connecting portion 200, the intermediate connecting pipe 300, and the distal end rotating connection portion 400 are connected at the respective connection portions and are not easily detached by the retaining protrusion. The rotation connection portion 200 on the hand side is rotated by a rotation angle of 45 degrees, and the rotation position is fixed by a lock mechanism. In the rotation connecting portion 400 on the distal end side, the connecting portion 431 formed by the rotation portion 408, the rotation base portion 407, and the like is rotated by a rotation angle of 45 degrees, and the rotation position is fixed to some extent by the notch. The connecting portion 432 formed by the shaft protrusion 427 and the connecting hole 423 is rotated to a position where the suction port forming portion 426 is on the lower side with respect to the axial center of the connecting pipe 300. Further, the intermediate connecting pipe 300 is extended to the longest. As shown in FIG. 15, by connecting one end of the extension pipe 13 to the hand operation section 12 and connecting the rotational connection section 200 to the other end of the extension pipe 13, for example, the upper surface of furniture or the upper surface of a general refrigerator Can be cleaned. The hand operating unit 12 is at a lower position than the furniture 900, and one end of the extension pipe 13 connected to the hand operating section 12 is also lower than the furniture 900, but the other end (tip) of the extension pipe 13 is located above the furniture 900. ing. The extension pipe 13 is inclined so that the other end side faces upward. The rotation connection part 200 connected to the other end of the extension pipe 13 is rotated downward so that the connection pipe 300 connected thereto is along the upper surface of the furniture 900. By this rotation, the connecting pipe 300 is brought into a state along the upper surface of the furniture 900. Further, the rotation connecting portion 400 connected to the connecting pipe 300 rotates downward so that the front end portion of the front joint 402 faces the upper surface of the furniture 900, and the brush 422 provided at the front end portion of the front joint 402. Contacts the upper surface of the furniture 900. Thereby, it becomes possible to clean the upper surface of furniture or the upper surface of a general refrigerator. In the case of the present embodiment, even in the furniture 900 having a height dimension of 1800 mm and a depth dimension of 600 mm, when the hand operating unit 12 is lifted to a height of about 1200 mm, the interior of the furniture 900 can be easily cleaned to the back. Can do. At this time, although it is difficult to catch the cleaning surface in the field of view, as shown in FIG. 26, when the tip of the rotation connecting portion 400 is configured to be swingable, the brush base 451 swings and the suction port (opening) ) The surface follows the cleaning surface, leaving less waste and cleaning more efficiently.

  In the present embodiment, by providing a plurality of rotation connection parts such as the rotation connection part 200 on the hand side and the rotation connection part 400 on the front end side, the height position of the hand operation part 12 is set at a high position. It is at a position lower than the cleaning surface, and the burden on the user's arm is small. Moreover, since the rotation connection part can be extended and contracted, it corresponds to a high place where the depth dimension is short.

  In addition, when trying to rotate the rotary connection portion 200 on the hand side during use, conventionally, the suction tool 100 is pulled to the vicinity of the hand where force is easily applied, and the connection pipe 300 is held with one hand and the other hand is used. Although it is necessary to apply force by holding the extension tube 13, in this embodiment, a lock mechanism is provided on the turning connection portion 200 on the hand side, and it is not necessary to apply a large force to turn the hand. It is also possible to rotate the hand holding the operation unit 12 with the other hand held in the unlocked state by lightly pressing the tip of the suction mouth (for example, the suction mouth forming part 426) against the cleaning surface. Here, since the suction tool 100 for vacuum cleaners can be connected also to the connection part of the hand operation part 12, it can also be used without connecting the extension pipe | tube 13. FIG. Further, the connection method is not limited to the method using the retaining protrusions, and may be constituted by screw connection or clamp connection to provide a strong connection.

  Further, as shown in FIG. 16, the hand side rotation connecting portion 200, the intermediate connection pipe 300, and the tip end side rotating connection portion 400 may be separable. These can be used without being connected although they are not easily detached by the retaining protrusions. For example, if the rotational connection portion 400 on the distal end side is not connected, the rotation on the distal end side can be performed. It is possible to reach a narrow gap that could not be entered with the width of the dynamic connecting portion 400, and it is also possible to connect a short suction port (not shown) to the rotating connecting portion 200 on the hand side. It is suitable for cleaning.

  In addition to the state in which the brush 422 faces downward (FIG. 1, FIG. 14, FIG. 15 and FIG. 16) in the state of being connected to the connecting pipe 300, the rotary connecting portion 400 is as shown in FIG. The rotation connecting portion 400 on the distal end side can be attached upside down (left and right) so that the brush 422 faces upward when connected to the connecting pipe 300. In other words, the rotation connection unit 400 is detachably attached to the connection tube 300 so that the rotation direction of the rotation connection unit 400 rotates in a different direction with respect to the connection tube 300. By connecting the rotation connecting portion 400 to the connection pipe 300 in the up-down direction (left-right direction), the rotation direction of the rotation connection portion 400 with respect to the connection pipe 300 can be varied, and there is a range that can be cleaned. spread.

  In the present embodiment, when the brush 422 is directed upward while being connected to the connection pipe 300, as shown in FIG. 18, for example, a portion such as the ceiling 800 where the cleaning surface faces directly below can be cleaned. In addition, since it is possible to extend and contract between the rotating connection portions, it is possible to clean the ceiling surface of a narrow space with a deep space where the furniture 900 or the like gets in the way and the extension tube 13 does not reach. At this time, it is difficult for the furniture 900 or the like to block the field of view and to capture the cleaning surface in the field of view. However, as shown in FIG. Oscillates, and the suction port (opening) surface follows the cleaning surface, so that there is less trash left and the cleaning can be performed more efficiently.

  The hand operating unit 12 is at a position lower than the ceiling 800, and one end of the extension pipe 13 connected thereto is also at a position lower than the ceiling 800. However, the other end (tip) of the extension pipe 13 is located near the ceiling 800. ing. The extension pipe 13 is inclined so that the other end side faces upward. The rotation connection part 200 connected to the other end of the extension pipe 13 is rotated downward so that the connection pipe 300 connected thereto is along the ceiling 800. By this rotation, the connecting pipe 300 is brought into a state along the lower surface of the ceiling 800. Further, the rotation connecting portion 400 connected to the connecting pipe 300 rotates upward so that the front end portion of the front joint 402 faces the ceiling 800, and the brush 422 provided at the front end portion of the front joint 402 has a ceiling. Contact 800. As a result, the ceiling 800 can be cleaned. Moreover, even if the ceiling 800 is located above the furniture 900, the ceiling 800 can be cleaned while avoiding contact with the furniture 900 without interfering with the furniture 900. In the case of the present embodiment, even in the ceiling 800 having a height of 2200 mm, the ceiling 800 can be easily cleaned by lifting the hand operation unit 12 to a height of about 1400 mm.

  Further, in the present embodiment, as shown in FIG. 19, the space with the floor surface is narrow, such as under the desk 1000, and can be cleaned even in a gap having a depth where the extension pipe 13 does not enter. In this case, the rotation connection part 200 connected to the connection pipe 300 is attached so as to rotate upside down from the states shown in FIGS. 14, 15, and 18. In FIGS. 14, 15, and 18, the turning connection portion 200 connected to the extension pipe 13 is connected to the extension pipe 13 so as to turn the connection pipe 300 downward. In FIG. 19, conversely, the rotation connecting portion 200 connected to the extension pipe 13 is connected so as to rotate the connection pipe 300 upward with respect to the extension pipe 13. At this time, it is difficult for the desk 1000 or the like to block the field of view and to capture the cleaning surface in the field of view. However, as shown in FIG. Oscillates, and the suction port (opening) surface follows the cleaning surface, so that there is less trash left and the cleaning can be performed more efficiently.

  The hand operating unit 12 is at a higher position than the desk 1000, and one end of the extension pipe 13 connected thereto is also higher than the desk 1000, but the other end (tip) of the extension pipe 13 is near the lower floor surface 1300. positioned. The extension pipe 13 is inclined so that the other end side faces downward. The rotation connecting portion 200 connected to the other end of the extension pipe 13 rotates upward with respect to the axial direction of the extension pipe 13 so that the connection pipe 300 connected thereto is along the floor surface 1300. ing. By this rotation, the connecting pipe 300 is brought into a state along the floor surface 1300. Further, the rotation connecting portion 400 connected to the connecting pipe 300 rotates downward so that the front end portion of the front joint 402 faces the floor surface 1300, and a brush 422 provided at the front end portion of the front joint 402 is provided. Contact the floor 1300. As a result, the floor surface 1300 can be cleaned.

  Further, when connecting to the hand operation unit 12 or the extension tube 13, the rotation connection unit 200 and the rotation connection unit 400 are provided with a claw for retaining the attachment / detachment clamp provided on the hand operation unit 12 or the extension tube 13. 16 and 17, the shape received by the recessed portion 218 formed in the tubular shape portion 205 of the rotational connection portion 200 shown in FIGS. 16 and 17 and the recessed portion 440 formed in the tubular shape portion 406 of the rotational connection portion 400. Instead, if the taper fitting is used, it is possible to connect to an extension pipe or an operation handle without a retaining claw, and it is possible to eliminate the need for a dedicated connection part.

  In the case of taper fitting, the suction tool 100 or the rotation connecting portion 400 can be attached upside down to the other end side of the hand operating portion 12 or the extension tube 13. Even in this case, the effect of the present embodiment described above can be obtained.

  As described above, according to the present embodiment, the suction tool 100 is provided with a plurality of rotation connection portions, and the rotation connection portion is provided with both a notch mechanism and a lock mechanism. In addition, the structure can be easily rotated during angle adjustment, and the lock is released when an excessive force is applied in the locked state. In addition, since at least one of the rotation coupling parts can be attached to the connection pipe upside down with respect to the connection pipe provided between the rotation coupling parts, the furniture etc. gets in the way and the extension pipe etc. arrives. It is possible to clean the ceiling surface of a narrow space with no depth. In addition, since the rotation connecting portion (joint) can be expanded and contracted, it is possible to deal with various heights. Furthermore, since the suction tool 100 can be mounted upside down on the other end of the hand operating portion 12 or the extension pipe 13, the space with the floor surface, such as under a desk, is narrow and there is a depth that the extension pipe does not enter. It can be cleaned even in gaps. In addition, since the brush base of the suction port forming part can be swung, the suction port (opening) surface follows the cleaning surface even in a narrow space with high depth, ceiling surface, under desk, etc. And can be cleaned efficiently. Furthermore, the suction port forming part 426 at the tip of the suction tool 100 can be directly attached to the hand operating part or the other end side of the extension pipe, and by taking a substantially T shape, a large cleaning surface in the front-rear direction can be taken. Since the friction surface can be reduced in the left-right direction, the burden on the hand side can be reduced.

DESCRIPTION OF SYMBOLS 10 Vacuum cleaner main body 11 Hose 12 Hand operation part 13 Extension pipes 14 and 15 Suction body 100 Suction tool 200 and 400 Turning connection part 300 Connection pipe

Claims (1)

A vacuum cleaner body having an electric blower and a dust collecting part, a hose that can be connected to the vacuum cleaner body at one end, a hand operating part that can be connected to the other end of the hose, and one end of the hand operating part In a vacuum cleaner comprising an extension tube connectable to the end and a substantially T-shaped suction body connectable to the other end of the extension tube,
A suction tool connectable to the other end side of the hand operation part or the extension pipe,
The suction tool is formed to be bendable by a plurality of joint mechanisms,
At least one of the joint mechanisms is provided with a lock mechanism that locks the bend and that can be unlocked by a user operation,
The lock mechanism includes a release button that unlocks the bend by an operation of a user, and a biasing unit that biases the release button in a locking direction.
The release button is formed on one joint of the joint mechanism,
The lock mechanism includes at least one lock protrusion formed on the release button, and a lock groove formed on the other joint of the joint mechanism and corresponding to the lock protrusion,
When the release button moves along the rotation axis direction of the joint mechanism, the lock mechanism releases the lock by releasing the fitting between the lock protrusion and the lock groove, and the biasing means When the release button is returned, the lock protrusion and the lock groove are fitted and locked,
At least one of the contact side surfaces of the lock protrusion and the lock groove has a trapezoidal shape or a triangular shape.