TWI391116B - Electric vacuum cleaner - Google Patents

Description

Electric vacuum cleaner

The invention is an electric vacuum cleaner.

In the conventional electric vacuum cleaner, as disclosed in Japanese Laid-Open Patent Publication No. 2000-300484, an attachment for bending the extension pipe is provided between the grip portion and the extension tube. The bending attachment is composed of two L-shaped elbows that are connected to be rotatable. Then, by rotating the elbow, the bottom of the bed or the table or the upper portion of the air conditioner or the like can be swept.

Further, as disclosed in Japanese Laid-Open Patent Publication No. 2002-253456, there is proposed an electric vacuum cleaner that is provided with a rotatable indirect portion between the upper extension tube and the lower extension tube to perform a sweeping of the sofa or under the bed. .

Further, as disclosed in Japanese Laid-Open Patent Publication No. 2007-44267, it is proposed to connect a connecting pipe to a suction port through a connecting portion, and to rotate the connecting pipe to the suction port with the rotating shaft of the connecting portion as a center. The air conditioner or the upper surface of the furniture is swept away from the suction port side of the unit.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-300484

[Patent Document 2] Japanese Laid-Open Patent Publication No. 2002-253456 (CN1369250A)

[Patent Document 3] Japanese Laid-Open Patent Publication No. 2007-44267 (CN1911153A)

However, in the electric vacuum cleaner disclosed in the above-mentioned Patent Document 1, the attachment for bending the extension tube as the rotation portion is only present between the grip portion and the extension tube, so that it is necessary to have a weight when sweeping the height. The extension tube and the floor inhalation are lifted up to the same height as the upper surface of the height, and since the position of the operating handle is also high, the wrist must be raised slightly to perform the sweeping, and the burden on the body is too great. Further, in the case where an inhalation device with a simple brush is used instead of the suction device for a floor, there is a problem that the extension pipe and the operation handle must be further raised in order to press the brush surface against the upper surface of the upper portion. Go to a higher position to perform the sweep.

Further, in the electric vacuum cleaner disclosed in the above Patent Document 2, since the rotatable indirect portion is provided between the upper extension tube and the lower extension tube, when the high-level cleaning is performed, the extension tube having the weight must also be used. The lifting device with the floor lifts up to the same height as the upper surface of the height, and barely raises the wrist to perform the sweeping, and the burden on the body is too great.

Further, in the vacuum cleaner disclosed in the above Patent Document 3, since the connecting pipe is in contact with the sweeping portion at the time of the high-sweeping, only the deep portion corresponding to the length of the suction port portion (referred to as the cleaning target) can be swept, and cannot be performed. Remove the depth of the top of the furniture or refrigerator.

An object of the present invention is to solve the above problems, and an object of the present invention is to provide an attachment for an electric vacuum cleaner that can improve the operability of a high-level sweep or the like.

In order to achieve the above object, an electric vacuum cleaner comprising: a vacuum cleaner body having an electric blower and a dust collecting portion; and a hose having one end connected to the cleaner body and one end connected to the hose a grip operating portion at the other end, an extension tube having one end connected to the other end of the grip operating portion, and a suction port connected to the other end of the extension tube; wherein the handle portion is connectable to the grip operation portion, Or a suction attachment device on the other end side of the extension tube, the suction attachment having a plurality of rotatable rotation joints.

Preferably, a connecting pipe is provided between the plurality of rotational joint portions, and at least one of the rotational joint portions is detachably coupled to the connecting pipe to form a direction different from a rotational direction.

According to the present invention, since a plurality of rotary joints are provided, an attachment of an electric vacuum cleaner which can improve the operability of the high sweep is provided.

Further, according to the present invention, it is possible to provide an electric vacuum cleaner which can improve the operability of a vacuum cleaner at a high place.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Example 1]

Fig. 15 is a perspective view showing the appearance of an electric vacuum cleaner of one embodiment of the present invention. In Fig. 15, reference numeral 10 denotes a cleaner body including an electric blower that generates an attractive force and a dust collecting portion, and 11 is a hose in which one end is connected to the cleaner body 10 through the hose joint 11a, and the hose and the dust collecting portion are provided. Connected. Reference numeral 12 denotes a grip operating portion, one end of which is connected to the other end of the hose 11, and is provided with a switch operating portion 12a for executing activation or deactivation of the electric blower. 13 is an extension tube in which one end is connected to the other end of the grip operating portion 12 and is retractable, and 14 is a suction port body connected to the other end of the extension tube 13. A suction passage is formed inside the hose 11, the grip operating portion 12, the extension tube 13, and the suction port body 14, and the suction port body 14 and the dust collecting portion of the cleaner body 10 are communicated. When the user operates the switch operating portion 12a to start the operation of the electric blower, an attractive force is generated. This suction force reaches the suction port body 14, and the dust sucked from the suction port body 14 is collected by the extension pipe 13, the grip operation portion 12, and the hose 11 to collect dust in the dust collecting portion of the cleaner body 10.

The grip operation portion 12, the extension tube 13, the extension tube 13, and the suction port body 14 are connected to each other so as to be detachable. When the wood floor, the tatami mat, and the fur rug are removed, the sweep operation is performed in a state in which the grip operation portion 12, the extension tube 13, and the suction port body 14 are connected. In the case where the gap between the furniture, the upper portion of the furniture, or the air conditioner is removed, the extension pipe 13 is removed from the grip operation portion 12, or the suction port 14 is removed from the extension pipe 13, and the attachment is attached to the grip. The operation unit 12 or the extension tube 13 performs sweeping corresponding to the cleaning target. Hereinafter, in the present embodiment, an attachment device for a vacuum cleaner that has a significant effect on the upper portion of the so-called furniture or the upper portion of the air conditioner will be described.

Fig. 1 is an overall perspective view of an attachment device 100 for a vacuum cleaner according to an embodiment of the present invention. The attachment device 100 for a vacuum cleaner is configured by a rotation connection portion 200 (first rotation connection portion) on the side of the grip operation portion 12, a connection pipe 300 in the middle, and a rotation connection portion 400 on the distal end side (second rotation) Connection)). The intermediate connecting pipe 300 is located between the rotating connecting portion 200 and the rotating connecting portion 400 and is expandable and contractible.

FIG. 2 is an exploded perspective view of the rotational connection portion 200. As shown in Fig. 2, the swing joint portion 200 on the grip side is constituted by a rear joint 201 which is a straight cylindrical portion 205 which communicates with the hose 11 or the extension pipe 13, and The straight cylindrical portion 205 is formed by forming an open bowl portion 206 in a direction perpendicular to the axial direction; and a bowl-shaped cover 204 facing the bowl portion 206 in a slightly symmetrical shape; and a front joint 202, The front joint 202 is formed by a straight cylindrical portion 207 and a tub portion 208 having a shaft in a direction perpendicular to the axial direction of the straight cylindrical portion 207. The straight tubular portion 207 is connected to the intermediate connecting pipe 300.

The barrel portion 208 of the front joint 202 has a shape in which the bowl portion 206 of the rear joint 201 and the inner side surface of the bowl cover 204 are slightly offset, and is slidably (rotatably) abutted and combined in a bowl shape. Portion 206 and bowl cover 204. The bowl 206 and the bowl cover 204 have notch portions 209, 210, respectively, and the front joint 202 is rotatable between the upper end 211 and the lower end 212 of the notch portion. Between the front joint 202 and the bowl-shaped cover, a contact ring 203 capable of generating a feeling of depression (click feeling) at a position of a rotational angle is disposed. The contact ring 203 has an annular shape and has a protrusion 213 for preventing rotation on the inner circumference, and has a contact protrusion 214 (protrusion) which generates a feeling of depression (click feeling) on the outer circumference, and a contact protrusion 214 (a protrusion 213 for preventing rotation) It is inserted: the rotation preventing groove 215 is provided on the bottom surface of the side of the barrel-shaped portion 208 of the front joint 202 of the bowl-shaped cover 204, and is formed to rotate together with the front joint 202.

As shown in Fig. 3, on the inner bottom surface of the bowl-shaped cover 204, there is a contact hole 214 for the outer circumference of the contact ring 203 to be pressed in, and a slightly circular rib 216 for causing the contact ring 203 to flex, which will not The recess 217 into which the contact protrusion 214 on the outer circumference of the contact ring 203 is pressed is formed at a specific angle on the circular rib 216. In this way, the rear joint 201 and the front joint 202 can rotate the bowl 206 and the central axis of the barrel 208 as a shaft, and the contact protrusion 214 of the contact ring 203 is received into the concave portion 217 of the slightly circular rib 216. When the current joint 202 rotates, the contact ring 203 rotates together with the front joint 202, and the contact protrusion 214 will abut against the concave portion 217 to form a deflection in the radial direction of the ring, and abut against the slightly circular rib 216. In the state, the concave portion 217 of the object to be rotated is reached, and the deflection is released and stored in the concave portion 217. The above-described storage allows the rotational angle position to be fixed to a certain extent.

Although in the present embodiment, the number of the contact protrusions 214 is two and the position of the concave portion 217 is also two, the present invention is not limited to this configuration. For the arrangement of the contact ring 203, in contrast to the present example, the groove 215 into which the contact ring 203 can be inserted is provided in the bowl-shaped cover 204, and the circular rib 216 which causes the contact ring 203 to flex is formed in front. Connector 202. In addition, the contact ring 203 can also be located on the side where the rear joint 201 abuts the front joint 202. Moreover, if two are provided on both sides, the flexing force acting on each contact ring can be dispersed. Can improve reliability. The method of generating the feeling of depression is not limited to the method described in this example. For example, if a coil spring is used instead of the ring, the same effect can be obtained by using a steel ball instead of the contact protrusion.

The straight cylindrical portion 205 of the rear joint 201 is connectable to the connecting portion of the grip operating portion 11 or the extension tube 13, and has a recess portion 218 for receiving and detaching the handle portion 11 or the extension tube 13 The claw for preventing falling off with a jig (not shown in the drawing). Further, the straight cylindrical portion 207 of the front joint 202 is connected to the connecting pipe 300 by the connecting portion 305, and has a hole portion 219 for receiving the falling prevention projection 305a of the connecting pipe.

As shown in FIGS. 4 and 5, the connecting tube 300 has a hollow sheet-like body 302 (inner tube) that is detachably housed in a hollow sheath body 301 (outer tube). On the outer side of the outer side of the sheet body 302, the concave portion 309 is formed at equal intervals. The brake 303 is rotatably provided at an end portion of the sheath body 301 on the side where the sheath body 302 can be expanded and contracted by the shaft 304. On the outer circumference of the other end side (connection portion 305) of the sheath body 301, a projection 305a for preventing falling off is formed, and a projection 306a for preventing falling off is formed on the front end side surface of the sheet-like body 302. The front end portion of the sheet-like body 302 is formed to be inclined downward from the front end portion toward the other end side. By the above-described tilting, the cleaning of the gap or the like can be performed in a state where the connecting pipe 300 is connected to the grip operating portion 12 or the extension pipe 13. Further, a front end portion of the sheet-like body 302 is formed with a connecting portion 306 that is connected to the rotational connection portion 400, and a projection 306a that prevents falling off when the rotary connecting portion 400 is connected is formed in the connecting portion 306.

The configuration of the brake 303 is shown in Figs. 6 and 7. As shown in FIGS. 6 and 7, the brake 303 is an elastic body 307 such as a spring, and the claw portion 308 is pushed in the direction of "a plurality of concave portions 309 formed on the outer surface of the sheet-like body 302". The telescopic position of the sheet body 302 is fixed. In the process in which the user presses the brake 303 with a finger to counteract (the offset) the elastic pushing of the elastic body 307, since the claw portion 308 is separated from the concave portion 309 of the sheet-like body 302, the expansion and contraction of the sheet-like body 302 can be freely performed.

The configuration of the rotary joint 400 is shown in Fig. 8. As shown in Fig. 8, the front end side rotation connecting portion 400 is constituted by a joint 401 which is a straight cylindrical portion 406 for receiving the front end portion of the sheet-like body 302 of the connecting pipe 300, and a circular rotating seat portion 407 is formed; and a rotary suction port 402 is formed which is formed by a slightly circular rotating portion 408 and a suction port 409; and a rotating cover 405 that faces the rotating suction port a rotating portion 408 of the 402; and a cover 404. The rotating portion 408 of the suction port 402 and the rotating cover 405 are slidably assembled to the rotating seat portion 407 so as to cover the rotating seat portion 407 of the joint 401.

The rotating portion 408 and the rotating cover 405 that rotate the suction port 402 have notch portions 410 and 411, respectively, and the rotary suction port 402 is rotatable within a range in which the upper end portion 412 of the notch portion and the lower end portion 413 abut against the joint 401. A contact ring 403 is disposed at a position where the rotating seat portion 407 is connected to the rotating portion 408, and the contact ring 403 is used to generate a feeling of depression that can notify (prompt) the position of the rotational angle. The contact ring 403 has the same shape as the contact ring 203, and has a protrusion 414 for preventing rotation and a contact protrusion 415 (protrusion), and is inserted into the rotation preventing groove 416 provided on the side of the rotating seat portion 407 of the joint 401.

At the rotating portion 408 of the rotary suction port 402, there is a slightly circular hole 417 in which the contact protrusion 415 of the outer periphery of the contact ring 403 is pressed to cause the contact ring 403 to flex, and the circular hole 417 does not The recess 418 that is pressed into the contact protrusion 214 on the outer circumference of the contact ring 403 is formed at a specific angle. Further, a claw hole 419 is formed in the rotating portion 408, and the claw 420 is fitted to fix the cover 404.

In this way, the joint 401 and the rotary suction port 402 can rotate the central axis of the rotating seat portion 407 and the rotating portion 408 as a shaft, and the contact protrusion 415 of the contact ring 403 is a concave portion 418 that is received in the slightly circular hole 417. When the rotary suction port 402 is rotated, the contact protrusion 415 will abut against the concave portion 418 to flex in the radial direction of the ring, and reach the concave portion 418 of the rotating target in a state of abutting against the slightly circular hole 417, and After the deflection is released, the recessed portion 418 is received, and by the above-described accommodation, the rotational angular position can be fixed to a certain extent.

Although in the present embodiment, the number of the contact protrusions 415 is two and the portion where the notches are formed is two, the present invention is not limited to the above configuration. As for the arrangement of the contact ring 403, as opposed to the present embodiment, a groove 416 for inserting the contact ring 403 is formed at the rotary suction port 402, and a slight circular shape is formed at the joint 401 to cause the contact ring 403 to flex. Hole 417.

In addition, the contact ring 403 can also be located on the side of the joint 401 that abuts the rotating cover 405. Moreover, if two are provided on both sides, the flexing force acting on each contact ring can be dispersed. Improves reliability.

The method of generating a feeling of depression (click feeling) is also not limited to the method described in this example. For example, if a coil spring is used instead of a ring, and a steel ball is used instead of the contact protrusion, the same can be obtained. effect.

The straight cylindrical portion 406 of the joint 401 has a hole portion 421 for receiving a projection 306a for preventing falling off at the front end portion of the sheet-like body 302 of the joint pipe 300.

Next, the front end portion of the rotary suction port 402 is formed to be inclined downward from the front end portion toward the other end side. By the above-described tilting, it is possible to perform a sweep such as a gap in a state where the connecting pipe 300 is connected to the grip operating portion 12 or the extension pipe 13. Further, in the inclined slit, as shown in the present embodiment, the bristles 422 can be implanted at the end faces of the slit portions, and the sweeping effect of the so-called cleaning and wiping can be obtained by the bristles 422.

Fig. 9 is a view showing a state in which the rotational connection portion 200 and the rotational connection portion 400 are connected to the connection pipe 300. In Fig. 9, the rotary joint 200 is rotated in a state of being connected to the joint pipe 300 to lower the joint pipe 300, and the rotary joint 400 is rotated in a state of being connected to the joint pipe 300. The front end portion of the rotation connecting portion 400 is downward. As shown in Fig. 9, the pivot connection portion 200 on the grip side, the intermediate connection tube 300, and the rotational connection portion 400 on the distal end side are connected by the respective connection portions, and it is difficult to prevent the protrusions from falling off. Separation. The rotational connection portion 200 on the grip side and the rotational connection portion 400 on the distal end side are respectively 45. The rotational angle is rotated and the rotational position is fixed to some extent by the contacts. Once the grip operation portion 12 is connected to one end of the extension tube 12, and the rotation connection portion 200 is connected to the other end of the extension tube 12, and the intermediate connection tube 300 is extended to the longest, as shown in FIG. 10, It can be removed from the top of the furniture or the top of a general refrigerator. Although the grip operating portion 12 is located lower than the furniture 900, and one end of the extension tube 13 connected to the grip operating portion 12 is also positioned lower than the furniture 900, the other end of the extension tube 13 is extended ( The front end is located above the furniture 900. The extension pipe 13 is formed in a state in which the other end side is inclined upward. The rotary joint 200 connected to the other end of the extension pipe 13 is rotated downward to bring the connection pipe 300 connected to the rotary joint 200 along (close to) the upper surface of the furniture 900. By the above rotation, the connecting pipe 300 is formed in a state of being in close proximity to the upper surface of the furniture 900. Moreover, the rotational connection portion 400 connected to the connecting pipe 300 is rotated downward so that the front end portion of the rotary suction port 402 faces the upper surface of the furniture 900, and the bristles 422 provided at the front end of the rotary suction port 402 are in contact with the furniture. Above the 900. As a result, it becomes possible to sweep the top of the furniture or the top of the general refrigerator. In the case of the present embodiment, even the furniture 900 having a height of 1800 mm and a thickness of 600 mm can be easily carried out to the deepest position on the furniture 900 by raising the grip operating portion 12 to a height of about 1200 mm ( Sweeping far away.

In the present embodiment, the height position of the grip operating portion 11 is set higher by providing a plurality of rotational connecting portions such as the rotational connecting portion 200 called the grip side and the rotational connecting portion 400 on the distal end side. The location where the face is removed is lower and the burden on the user's wrist is smaller. In addition, since the rotary joints can be expanded and contracted, even a high depth of the horizontal depth can correspond. Compared with the locking method, the notch method adopted in this case does not need to be unlocked. In addition, in the case of improper force application, the gap is used in comparison with the fear that the locking portion is damaged in the locking method. In this way, by rotating, the force is prevented from forming a dispersion in a concentrated manner, and thus the doubt of breakage is less.

In the present case, since the attachment device 100 for the vacuum cleaner can be connected to the connection portion of the grip operation portion 11, the extension tube 13 can be used without being connected. Further, the connection method is not limited to the method of preventing the protrusions from falling off, and may be constituted by a screw connection or a jig connection to form a stable connection.

Further, as shown in Fig. 11, the pivotal connection portion 200 on the grip side and the intermediate connection tube 300 and the rotational connection portion 400 on the distal end side are also separable. Although the above-described member is a member that "is not easily separated by preventing the falling protrusions", it can be used without being connected. For example, as long as the front end side rotation connecting portion 400 is not connected, the front end side can be reached. A narrow gap in which the width of the rotation connecting portion 400 is inaccessible, and a short suction port (not shown in the drawing) is connected to the rotation connecting portion 200 on the grip side, which is suitable for sweeping around the body.

In a state in which the rotation connecting portion is connected to the connection pipe 300, the bristles 422 are formed in a state of being directed downward (first, ninth, tenth, and eleventh views), as shown in Fig. 12. The front end side rotation connecting portion 400 is assembled upside down (left and right), and the bristles 422 are formed in an upward state in a state of being connected to the connection pipe 300. In other words, the rotational connection portion 400 is detachably formed on the connection tube 300, and the rotational direction of the rotational connection portion 400 is rotatable in different directions with respect to the connection tube 300. By connecting the vertical direction (left-right direction) of the rotational connection portion 400 to the connection pipe 300 in the opposite direction, the rotational direction of the rotational connection portion 400 with respect to the connection pipe 300 can be made different, and the range of the sweepable can be increased.

In the present embodiment, when the bristles 422 are directed to the upper side in a state of being connected to the connecting pipe 300, as shown in Fig. 13, the portion where the cleaning surface such as the ceiling 800 is directed downward can be swept away. Since the rotation joints are expandable and contractible, even a ceiling surface having a narrow space having a horizontal depth can be removed even if the extension of the extension pipe 13 or the like is disturbed by the furniture 900 or the like.

Although the grip operating portion 12 is located lower than the ceiling 800, and one end of the extension tube 13 connected to the grip operating portion 12 is also positioned lower than the ceiling 800, the other extension tube 13 is The other end (front end) is located near the ceiling 800. The extension pipe 13 is in a state in which the other end side is inclined upward. The rotation connecting portion 200 connected to the other end of the extension pipe 13 is rotated downward to connect the connection pipe 300 connected to the rotation connection portion 200 along (close to) the ceiling 800. By this rotation, the connecting pipe 300 is formed in a state of being (close to) the lower surface of the ceiling 800. Moreover, the rotational connection portion 400 connected to the connection pipe 300 is rotated upward, and the front end portion of the rotary suction port 402 faces the ceiling 800, and the bristles 422 provided at the front end portion of the rotary suction port 402 are in contact with the ceiling 800. As a result, it becomes possible to sweep the ceiling 800. In addition to this, even in the ceiling 800 above the furniture 900, contact with the furniture 900 can be avoided and the cleaning of the ceiling 800 can be performed without interfering with the furniture 900. In the case of the present embodiment, in the case of the ceiling 800 having a height of 2,200 mm, the cleaning of the ceiling 800 can be easily performed once the grip operating portion 12 is lifted to a height of about 1400 mm.

Further, in the present embodiment, even in the narrow space between the lower surface of the table 1000 or the like and the floor surface as shown in Fig. 14, and the gap having the depth that the extension pipe 13 cannot enter, the cleaning can be performed. In this case, the rotational connection portion 200 connected to the connection pipe 300 is assembled to rotate in the opposite direction to the state shown in Figs. 9, 10, and 13. In the ninth, tenth, and thirteenth drawings, the rotational connection portion 200 connected to the extension tube 13 is connected such that the connection tube 300 is rotated downward with respect to the extension tube 13. In Fig. 14, in contrast to the above-described situation, the rotational connection portion 200 connected to the extension tube 13 is connected such that the connection tube 300 is rotated upward relative to the extension tube 13.

Although the grip operating portion 12 is located higher than the table 1000, and one end of the extension tube 13 connected to the grip operating portion 12 is located at a higher position than the table 1000, the other end of the extension tube 13 is extended. The (front end) is located at a position close to the floor surface 1200 below. The extension pipe 13 is in a state in which the other end side is inclined downward. The rotation joint portion 200 connected to the other end of the extension pipe 13 is rotated upward with respect to the axial direction of the extension pipe 13, and the connection pipe 300 connected to the rotation connection portion 200 is brought along (close to) the floor surface 1200. By this rotation, the connecting pipe 300 is formed in a state along the floor surface 1200. Further, the rotation connecting portion 400 connected to the connecting pipe 300 is rotated downward so that the front end portion of the rotating suction port 402 faces the floor surface 1200, and the bristles 422 provided at the front end portion of the rotating suction port 402 are in contact with the floor surface. 1200. In this way, the floor surface 1200 can be removed.

Further, the straight cylindrical portion 205 of the rear joint 201 shown in Fig. 12 is not limited to the shape that can be received by the concave portion 218, and may be connected to an extension tube or an operation handle that does not prevent the falling claws as long as it can be wedge-shaped. No special connecting parts are required.

In the case where the wedge-shaped fitting is formed, the body of the cleaner attachment device 100 can be assembled upside down on the handle operation portion 12 or the other end of the extension tube 13. Even in this case, the effects of the above-described embodiment can be obtained.

According to the above-described embodiment, at least one of the rotation coupling portions is provided in the attachment for the cleaner, and at least one of the rotation coupling portions is vertically and oppositely assembled to the connection with respect to the connection pipe provided between the rotation coupling portions. Even if it is a "small space that is disturbed by furniture or the like and has a depth that cannot be reached by an extension pipe," the ceiling surface can be removed.

In addition, since the rotation joints are freely expandable and contractible, they can correspond to various depths (horizontal depths).

In addition, since the attachment device can be assembled upside down on the handle operation portion or the other end of the extension tube, the space between the floor surface and the floor surface is narrow and has a depth in which the extension tube cannot enter. Clearance can also be performed.

[Embodiment 2]

Next, another embodiment of the present invention will be described using Figs. 16 and 17 .

In the present embodiment, at the rotational connection portion 200, the contact ring 203. The notch mechanism formed by the rotation preventing groove 215 and the slightly circular rib 216 and the concave portion 217 is set to be double. On the side where the bowl 206 of the rear joint 201 abuts the barrel 208 of the front joint 202, the contact ring 203B is pushed toward the bowl 206 by the elastic body 501 provided at the front joint 202. The contact protrusion 214B (not shown in the drawing) is accommodated in the concave portion 217B (not shown in the drawing) of the slightly circular rib 216B, and the button 502 is abutted against the contacted contact ring 203B. The head of the button protrudes from the opening provided in the bowl 206 of the rear joint 201.

In this way, when the sweep shown in FIG. 10 is performed, the front end of the rotary suction port 402 of the front end side of the rotary joint 400 is pressed against the force of the swept surface, and the grip side of the 45° rotation angle is rotated. Even if the rotation connecting portion 200 is feared that the turning angle becomes 0°, it is difficult to make the turning angle 0° because the double notch mechanism is provided. Although this means that it is also difficult to rotate in the case where the rotation angle is rotated from 0° to 45°, as long as the elastic force of the elastic body 501 is pressed against the elastic force of the elastic body 501 as shown in Fig. 17, the button 502 can be pressed. The contact ring 203B abutting on the button 502 is detached from the slightly circular rib 216B along the rotation preventing groove 215B (not shown in the drawing), and since the function of the notch is released, the deflection caused by the rotation can be eliminated, The force required for rotation can be halved and made easy to rotate.

Although the configuration of the double notch causes the button 502 to be operated to release the function of the contact ring 203B, the difference from the locking configuration is that even in the unreleased state, it can be rotated as long as a large force is applied. Therefore, there are fewer doubts about damage.

Although the contact ring 203B can also adopt the contact ring 203 described above, it is also possible to adjust the notch (clamping) force by using a shape and a material that are more difficult to flex than the contact ring 203, and further, by other methods. The same effect can be obtained by forming the notch mechanism.

In this example, although the notch function can be released by the two notch mechanisms provided in two, in this case, the fixing by the notch will completely fail, and the inadvertent rotation may cause injury or breakage. Not an effective method.

According to the present embodiment described above, since the plurality of rotation connecting portions are provided in the attachment device for the cleaner, even if the surface to be cleaned is at a high position, the operation can be smoothly performed at a lower position, and the physical burden due to the cleaning can be reduced. .

In addition, since the rotary joints are free to expand and contract, they can correspond to the horizontal depths of various heights.

Then, since the rotation connecting portion is provided with the notch mechanism, it is possible to form a certain degree of position fixing at a specific angle, and it is possible to rotate without requiring a lock release operation.

Moreover, since the rotary joints can be separated from each other, they can be used to correspond to the manner of use required by different sweeping places.

Further, since the notch mechanism of the rotary joint portion is set to be double, it can be surely fixed when it is not desired to rotate, and can be easily rotated when it is desired to rotate.

100. . . Vacuum cleaner attachment

200, 400. . . Rotating joint

300. . . Connecting pipe

600. . . Extension tube

Fig. 1 is a perspective view of an attachment for a vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is an exploded view of the pivotal connection portion on the grip side of one of the embodiments of the present invention.

Figure 3 is a P view of a bowl-shaped lid of one of the embodiments of the present invention.

Figure 4 is a perspective view of a connecting pipe of one embodiment of the present invention.

Fig. 5 is a perspective view showing a state in which the connecting pipe of one embodiment of the present invention is extended.

Figure 6 is a cross-sectional view showing the brake of the connecting pipe of one embodiment of the present invention.

Fig. 7 is a cross-sectional view showing a state in which a brake of a connecting pipe of one embodiment of the present invention is pressed.

Figure 8 is an exploded view of the rotational connection portion on the front side before one of the embodiments of the present invention.

Fig. 9 is a perspective view showing the rotation and extension of the attachment for the vacuum cleaner of one embodiment of the present invention.

Figure 10 is a diagram showing an example of performing a high-level sweep in one of the embodiments of the present invention.

Fig. 11 is a perspective view showing the attachment of the vacuum cleaner of the embodiment of the present invention when separated.

Fig. 12 is a perspective view showing the attachment of the cleaner for one of the embodiments of the present invention when separated. (in the opposite direction of installation)

Fig. 13 is a view showing an example of performing ceiling cleaning in one of the embodiments of the present invention.

Fig. 14 is a view showing an example of performing floor cleaning in one of the embodiments of the present invention.

Fig. 15 is a perspective view showing the appearance of an electric vacuum cleaner of one embodiment of the present invention.

Figure 16 is a cross-sectional view showing the pivotal connection portion on the grip side of one of the embodiments of the present invention.

Fig. 17 is a cross-sectional view showing a state in which a button of a rotary joint portion on the grip side of one embodiment of the present invention is pressed.

100. . . Vacuum cleaner attachment

200. . . Rotating joint (first rotating joint)

300. . . Connecting pipe

400. . . Rotating joint (second rotating joint)

Claims (5)

An electric vacuum cleaner comprising: a vacuum cleaner body having an electric blower and a dust collecting portion; and a hose having one end connected to the cleaner body; and a grip having one end connected to the other end of the hose An operation portion; and a retractable extension tube having one end connected to the other end of the grip operation portion; and a suction port body connected to the other end of the extension tube, characterized in that: the device is connected to the grip operation portion And a suction attachment device at the other end of the extension tube, wherein the suction attachment device has a plurality of rotatable rotation coupling portions, and a connection tube is connected between the plurality of rotation coupling portions, and the plurality of rotation coupling portions are provided The notch mechanism that can be positioned at a specific rotation angle can be separated, and among the plurality of rotation coupling portions, the rotation coupling portion on the distal end side has a rotary suction port. The electric vacuum cleaner according to claim 1, wherein the notch mechanism is doubled in one or all of the rotation coupling portions, and one of the notch mechanisms can release the function. The electric vacuum cleaner according to claim 1, wherein a connecting pipe is provided between the plurality of rotating joint portions, and the rotating link is provided. At least one of the portions is connected to be detachable, and the direction of rotation is formed in a different direction with respect to the aforementioned connecting tube. The electric vacuum cleaner according to claim 3, wherein at least one of the rotation coupling portions is connected to be detachable, and the rotation direction is opposite to the connection pipe. The electric vacuum cleaner according to claim 3, wherein the attachment device is assembled upside down to the grip operation portion or the other end side of the extension tube.