JP2011036446A - Vacuum cleaner and suction body for vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction body for a vacuum cleaner which has an upper case as an appearance part with less shape limitation and is well assembled with a smaller number of parts and processes and structured simply at a cost with excellent appearance without a spoiling operability. <P>SOLUTION: In a suction body 10 for a vacuum cleaner which is formed with an upper case 12 attached to a lower case 11, has a suction chamber which has an opening facing the cleaned surface and is equipped with a rotating cleaning body 140 arranged in the suction chamber so that it can rotate, the upper case 12 is molded with two colors or molded integrally with two or more kinds of materials or the same material by insert molding, then, in the proximity of a switching part 125 between the primary shaping part 121 and the secondary shaping part 122, the primary shaping part 121 and the secondary shaping part 122 are overlapped in the vertical direction of the suction body 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner and a mouthpiece thereof.

  In order to improve design, conventional vacuum cleaner mouthpieces are composed of parts formed from molded parts and other parts formed from transparent materials, etc. Those that have been painted are common. Some use a metallic mold instead of painting.

  For example, Patent Document 1 (Japanese Patent Laid-Open No. 2002-272652) proposes a shape in which a reinforcing member covers the entire surface from the front end of the upper body member of the suction body. This is configured so that the strength against impact is improved by the reinforcing member and the design appearance is not impaired.

Japanese Patent Laid-Open No. 2002-272652

  In such a conventional technique, in order to improve the design appearance, the upper case is composed of a plurality of parts, thereby increasing the number of parts and processes, resulting in poor assemblability and an increase in cost. Even when painting is applied, the cost can be increased by adding paint, a jig for painting, and a painting process. In addition, in order to realize high design and cost reduction, when using metallic mold instead of painting, since weld lines are more likely to appear on the appearance surface compared to general resin materials, the type of metallic material There was a limitation that a complicated structure must be avoided.

  Moreover, in patent document 1, since the reinforcement member is piled up and provided from the front end part of the upper main body member, the thickness of the upper case increases as a whole, the mouthpiece becomes larger, and there are limitations on the design. It is possible to join. Moreover, since the mass of a suction body increases, operativity deteriorates and material cost may also increase.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vacuum cleaner mouthpiece and a vacuum cleaner that are excellent in appearance without sacrificing operability, with a configuration with reduced shape restrictions, good assembly, and low cost. There is.

  In order to achieve the above object, a feature of the present invention is that a lower case is formed by attaching an upper case, and has a suction chamber having an opening facing the surface to be cleaned, and the suction chamber is rotatable. In the vacuum cleaner mouthpiece provided with the rotary cleaning body arranged, the upper case is integrally molded from two or more materials or the same material by two-color molding or insert molding, and the primary molding part and the secondary molding The vicinity of the switching part of the molding part is that the primary molding part and the secondary molding part are provided in the vertical direction of the suction body.

  Preferably, the present invention covers the front side and the side surface direction of the secondary molded portion with a buffer member.

  Preferably, in the present invention, one or a plurality of openings are provided in addition to the primary molding portion of the secondary molding portion of the upper case and the portion provided to overlap the suction body in the vertical direction, and a plurality of molding flows are provided. The structure is divided into two.

  Preferably, the present invention has a structure in which the molding flow of the secondary molding part can be adjusted by the shape of the primary molding part provided to overlap the secondary molding part of the upper case in the vertical direction of the mouthpiece.

  Alternatively, the feature of the present invention is that the rear portion of the upper case is made of the first resin, and the front portion of the upper case has the second content of the specific material higher than that of the first resin. The upper case front part and the upper case rear part are integrally formed, and the first resin part at the rear part of the upper case and the second resin part at the front part of the upper case are switched. The first resin portion at the rear of the upper case and the second resin portion at the front of the upper case are overlapped with each other, and the second resin portion at the front of the upper case is It is in appearing on the surface of the mouthpiece for the vacuum cleaner.

  According to the present invention, the upper case of the mouthpiece is integrally molded by overlapping the primary molding portion and the secondary molding portion in the vertical direction of the mouthpiece, near the switching portion between the primary molding portion and the secondary molding portion, It is possible to provide a vacuum cleaner mouthpiece that is light in weight and excellent in appearance with a simple and cost-effective configuration with a small number of parts and processes.

  Further, according to the present invention, by covering the front and side directions of the secondary molded part with the buffer member, it is possible to further reduce the thickness and weight while ensuring the strength, and to improve the operability. A suction mouth for a vacuum cleaner and an electric vacuum cleaner can be realized.

  In addition, according to the present invention, by adopting a structure in which the molding flow is divided into a plurality of paths, it is possible to adjust the location where the weld line appears, and a simple and cost-effective configuration with a high design electric cleaning with an excellent appearance. A suction mouth for a machine and a vacuum cleaner can be realized.

  In addition, according to the present invention, without changing the shape of the upper case, the structure of the primary molded portion can be used to adjust the molding flow of the secondary molded portion. For example, there is no need to provide a space for adjusting the shape of the upper case to change the shape of the upper case between the upper case, such as the lower case, and to adjust the flow. Thus, it is possible to realize a vacuum cleaner mouthpiece and a vacuum cleaner that are more compact and have excellent operability.

  Alternatively, according to the present invention, the rear part of the upper case is made of the first resin, and the front part of the upper case is made of the second resin having a higher specific material content than the first resin. And the upper portion of the upper case and the rear portion of the upper case are integrally formed, and the upper portion of the switching portion between the first resin portion at the rear portion of the upper case and the second resin portion at the front portion of the upper case. The first resin portion at the rear of the case overlaps the second resin portion at the front of the upper case, and the second resin portion at the front of the upper case is the vacuum cleaner at the switching portion. Since it appears on the surface of the mouthpiece for use, the design of the mouthpiece can be improved while suppressing a decrease in strength of the mouthpiece. Since the design of the mouthpiece is improved, the design of the entire vacuum cleaner can also be improved.

It is an external view of the vacuum cleaner which concerns on the Example of this invention. It is a perspective view of a mouthpiece concerning an example of the present invention. It is a top view of the upper case which concerns on the Example of this invention. It is AA sectional drawing shown in FIG. It is a top view which shows the shape of the upper case primary formation part which concerns on the Example of this invention. It is a top view which shows the flow of resin of the upper case secondary molding part which concerns on the Example of this invention.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the following, the direction along the rotation axis of the rotary cleaning body 140 is referred to as the left-right direction of the mouthpiece body, and this left-right direction coincides with the longitudinal direction of the normal mouthpiece body. In addition, regarding the vertical direction of the mouthpiece body, with the mouthpiece 10 placed on a horizontal surface to be cleaned (for example, a floor surface), the side on which the suction port 100 is formed is the lower surface side, and the opposite side is the upper surface side. Call it. Further, as viewed from the user, the direction in which the user holds the hand operating unit 4 (operation tube) and pushes the mouthpiece 10 is the front side (front), and the direction in which the user pulls the mouthpiece 10 toward the user is the rear side (rear). It is defined as

  As shown in FIG. 1, the vacuum cleaner 1 includes a vacuum cleaner body 2, a hose 3, a hand operating unit 4, an extension pipe (tube) 5, and a second mouthpiece having a substantially I shape as a mouthpiece. 6 and a substantially T-shaped first suction body 10.

  The vacuum cleaner body 2 includes a built-in electric blower that generates a suction force (not shown), a dust collecting portion that stores dust collected by the suction force of the electric blower, and the like. The operation of the electric blower is controlled by operation of an operation switch SW provided in the section.

  One end of the hose 3 is connected to the connection port 2 a of the cleaner body 2 so as to communicate with the dust collecting part of the cleaner body 2, and the other end of the hose 3 is connected to the hand operation unit 4. The extension pipe 5 is composed of two pipe bodies 5 a and 5 b and can be expanded and contracted, and one end of the pipe body 5 a is connected to the other end of the hand operation unit 4.

  The second suction body 6 is a suction body connected to the other end of the tube body 5b of the extension pipe 5, and the first suction body 10 is connected to the other end. The second suction body 6 functions as a suction body that sucks dust alone by removing the first suction body 10. However, the second suction body 6 is not an essential configuration.

  The first suction body 10 is a suction body connected to the other end of the second suction body 6. As shown in FIG. 2, a suction port 100 is opened on the lower surface (cleaning surface). A rotary cleaning body 140 driven by driving means is disposed inside. The first suction body 10 (hereinafter, simply referred to as “suction body 10”) can be connected to the other end (upstream side) of the extension pipe 5 and the other end (upstream side) of the hand operation unit 4. is there.

  The mouthpiece 10 includes a lower case 11 that forms a lower part so as to cover the rotary cleaning body 140, and an upper body 12A that is attached to the upper portion of the lower case 11, and a rear side of the mouthpiece body 10A. And a suction joint 10B having an air passage formed therein. The main parts of the lower case 11, the upper case 12, and the suction joint 10B are made of a light and hard material, for example, a synthetic resin material such as ABS resin. The cleaning members 302 to 305 of the rotary cleaning body 140 can be configured using soft blades in addition to brushes made of fibers or the like. The brushes and blades can be used alone or in combination with brushes and blades. Can be configured. The rotary cleaning body 140 rotates in the X1 direction and has an effect of scraping dust on the surface to be cleaned. Further, the cleaning member may be constituted by a protruding portion formed integrally with a member forming the cylindrical base body 306. The cylindrical base 306 is made of a metal such as aluminum or a synthetic resin material such as PA or ABS containing glass and is light and hard. In any case, the cleaning member is configured to protrude outward from the outer peripheral surface of the cylindrical base body 306.

  The mouthpiece 10 is provided with a mouthpiece joint 10B at the center position in the left-right (width) direction. One end of the suction joint 10B is sandwiched between the lower case 11 and the upper case 12 and connected to the suction body 10A so as to be rotatable, and is substantially perpendicular to the surface to be cleaned. First connecting tube 102 that can rotate up and down (up and down), and one end of which is rotatably connected to the other end of first connecting tube 102 and can be rotated in the left and right direction with respect to mouthpiece body 10A. A second connecting pipe 103 is provided. The extension pipe 5 is connected to the other end of the second connection pipe 103. The suction joint 10B has a function of tilting the extension pipe 5 in the left-right direction of the mouthpiece body 10A in a state where the extension pipe 5 is substantially perpendicular to the surface to be cleaned. For this reason, by twisting the hand operating part 4 in either of the left and right directions, the mouthpiece body 10A can be rotated by about 90 degrees in any of the left and right directions, and cleaning can be performed with the left and right direction of the mouthpiece body 10A set as the moving direction. The suction body 10 can be moved along the wall and cleaned, or the suction body 10 can be inserted into a narrow gap for cleaning.

  Further, a bumper 8 is interposed between the lower case 11 and the upper case 12 from the front portion to the left and right sides of the mouthpiece body 10A. The bumper 8 is made of an elastic material such as rubber or elastomer, and keeps the airtightness in the mouthpiece body 10A during use, and when the mouthpiece body 10A collides with furniture or the like when the electric vacuum cleaner 1 is used. It functions as a cushioning material that absorbs damage to the furniture and the like and shocks to the mouthpiece body 10A.

  The suction port 100 opened on the lower surface of the lower case 11 has a substantially curved concave shape (see FIG. 4A), and a suction chamber is formed in the curved concave portion. The curved concave opening becomes the opening of the suction chamber. As shown in FIG. 2, a suction passage 101 is formed in the rear of the suction port 100. The suction passage 101 communicates with the passage described above of the suction joint 10B.

  As shown in FIGS. 3 and 4, in this embodiment, the upper case 12 is formed by two-color molding, the primary molded portion 121 is a general ABS resin, and the secondary molded portion 122 is an ABS resin containing metallic (aluminum particles). Two types of materials (hereinafter referred to as “metallic mold”) are integrally formed. Therefore, the primary molding part 121 and the secondary molding part 122 are made of the same resin, but since the aluminum particles are kneaded into the secondary molding part 122, the secondary molding part 122 is the primary molding. Although the strength is inferior to the portion 121, the design is high. The material of the secondary molding part 122 preferably has a higher content of a specific material that improves the designability than the material of the primary molding part 121. Only the vicinity of the switching part 125 between the primary molding part 121 and the secondary molding part 122 is configured by superimposing the primary molding A part 121A and the secondary molding A part 122A in the upper and lower direction of the mouthpiece, and the front side from the vicinity of the switching part 125 Is constituted only by the secondary molding B portion 122B. That is, in the switching part 125, the lower side is integrally formed as a primary molded part 121 with high strength, and the upper side (surface side of the mouthpiece body 10A) is integrally formed as a secondary molded part 122 with high design. For example, the material for the primary molded product is poured into the mold to form the primary molded part 121, the primary molded part 121 is set in the mold, and the switching part 125 has the mold 2 so as to overlap the primary molded part 121. The material for the next molded product is poured to form the secondary molded part 122 integrally with the primary molded part 121.

  At this time, the primary molding A part 121A and the secondary molding A part 122A are preferably overlapped in the vertical direction of the mouthpiece, and the primary molding A part is preferably made as small as possible in order to reduce the weight. In consideration of the adhesion between 121A and the secondary molding A portion 122A, an overlap margin of about 30 to 50% of the length of the front and rear of the mouthpiece body of the secondary molding portion 122 or about 10 to 20 mm in the front and rear direction of the mouthpiece is provided. . As shown in FIG. 4A, in the front-rear direction, the front end of the switching unit 125 is between the axis of the rotary cleaning body 140 and the rear end of the rotary cleaning body 140, and the rear end of the switching unit 125 is It is located between the rear end of the curved concave suction chamber and the rear end of the upper case 12. Alternatively, the upper case 12 has a convex shape in which the front portion is gently curved with respect to the rear portion in the cross section from the side surface, and the front end of the switching portion 125 is the convex shape of the front portion of the upper case 12 in the front-rear direction. The rear end of the switching portion 125 is located at the convex root portion of the front portion of the upper case 12. In the convex base portion of the front portion of the upper case 12, the primary molding portion 121 has a concave shape. Therefore, by leading the front end of the switching part 125 to the convex top part of the front part of the upper case 12 and avoiding constituting the convex top part with a large load only by the low-strength secondary molding part 122, The strength of the upper case 12 is improved. On the other hand, by making the rear end of the switching part 125 a concave part of the primary molding part 121, the secondary molding part 122 is prevented from peeling off from the primary molding part 121. As a result, in the front-rear direction, the rear end of the secondary molded portion 122 extends further to the rear than the rear end of the curved concave suction chamber, so that most (half or more) of the surface of the upper case 12 is transferred to the secondary molded portion. 122 will occupy.

  With such a configuration, the secondary molded portion 122 appears in a wide range of the appearance surface, and the appearance surface can be formed with two kinds of materials, so that a high design can be achieved. Further, in this embodiment, a metallic mold is used for the secondary molded part, but the present invention is not limited to this, and a transparent material or the same material that is different in color from the primary molded part may be used. Well, it is possible to deploy to many models with the same mold. The material of the secondary molding part should just be a design property higher than the material of at least a primary molding part. Moreover, since the front side is comprised only by the secondary shaping | molding B part 122B, thickness can be made thin, the weight reduction of the suction body 10 can be achieved, and operativity can be improved. Since the rear portion of the mouthpiece body 10A is pivotably connected to the mouthpiece joint 10B, strength is required. Therefore, if the front part of the mouthpiece body 10A is made of a metallic mold and the rear part of the mouthpiece body 10A is made of a general ABS resin, the front part of the mouthpiece body 10A is made of a general ABS resin and the mouthpiece body 10A Compared with the case where a rear part is comprised with a metallic mold, the intensity | strength of 10 A of suction body main bodies can be improved. In addition, since the suction joint 10B itself needs strength, it is preferable that the suction joint 10B is made of a general ABS resin instead of a metallic mold. Therefore, if the front part of the mouthpiece body 10A is made of a metallic mold and the rear part of the mouthpiece body 10A is made of a general ABS resin, the front part of the mouthpiece body 10A is made of a general ABS resin and the mouthpiece body 10A Compared to the case where the rear part is formed of a metallic mold, there is less discontinuity between the mouthpiece joint 10B and the color and appearance, and the design of the mouthpiece 10 as a whole can be improved. Alternatively, the front portion of the mouthpiece body 10A may be primarily molded, and the rear portion of the mouthpiece body 10A may be secondarily molded.

  Further, by covering the front side and the side of the upper case 12 with the bumper 8, the impact from the outside can be absorbed by the bumper 8, and the strength can be ensured. Thus, the thickness of the secondary molded B portion 122B can be further reduced and the weight can be reduced. At this time, the range of the upper case 12 covered with the bumper 8 may be limited to only the secondary molding portion 122, and further to the secondary molding B portion 122B.

  On the other hand, in this embodiment, a metallic mold is used in order to improve the appearance of the secondary molded portion 122. However, in general, in the metallic mold, a general resin material in which metallic (aluminum particles) is not kneaded is used. Compared with this, a weld line is likely to appear, and the appearance may be impaired depending on the place where the weld line is generated.

  As shown in FIG. 6, in this embodiment, by providing two openings 126 in the secondary molding B portion 122B, the flow of the resin from the gate 128 during the secondary molding is divided in three directions, By adjusting the flow rate, the weld line generation point can be intentionally adjusted. In the present embodiment, the position at which the resin flows 130a to 130c divided in the three directions merge is adjusted to a location where the seal 127 conventionally used for the mouthpiece is pasted (the central portion in the left-right direction of the mouthpiece body 10A). Thus, even if a weld line occurs, the structure is inconspicuous. In addition, instead of attaching the seal 127, the outer appearance surface of the joining portion of the resin flows 130a to 130c divided in three directions may be subjected to embossing so that the weld line 129 may be inconspicuous.

  Furthermore, in the present embodiment, by adjusting the thickness of the primary molding A portion 121A, the thickness of the secondary molding A portion 122A is changed without changing the shape of the upper case 12, thereby allowing the resin flow. The structure where the joining points of the resin flows 130a to 130c divided in three directions can be adjusted.

  For example, when the primary molding A portion 121A has the shape of FIG. 5A, it is assumed that a weld line 129 is generated at a position disengaged from the seal 127 as shown in FIG. 6A. In order to move the generation point of the weld line 129 to the lower part of the explanation seal 127, as shown in FIGS. 5B and 5C, the primary molding A portion 121A is provided with a convex portion 121a, and the secondary molding A portion is relatively provided. The resin flow 130 is adjusted by reducing the thickness of 122A. When the convex portion 121a has the shape shown in FIGS. 5B and 5C, the secondary molding A is provided so as to be overlapped in the upper surface direction of the convex portion 121a as in the cross sections shown in FIGS. 4B and 4C. The thickness of the portion 122A is reduced, and the resin flow 130a is slowed down. As a result, the confluence of the resin flows 130a to 130c divided in three directions moves, and the occurrence of the weld line 129 moves to the center side of the mouthpiece 10 as shown in FIGS. 6 (b) and 6 (c). be able to. At this time, in order to avoid a sudden change in the thickness of the secondary molding A portion 122A and the generation of a flow mark on the secondary molding portion 122, the end portion of the convex portion 121a has a large R or slope. By doing so, the thickness of the secondary molding A portion 122A is changed smoothly. Further, a plurality of convex portions 121a may be provided as shown in FIG. 5B, or only one convex portion 121a may be provided as shown in FIG. 5C to adjust the resin flow 130.

  As described above, in the embodiment, the occurrence location of the weld line 129 can be adjusted without changing the shape of the upper case 12 by adjusting the thickness and width of the convex portion 121a. . Furthermore, in this embodiment, since the flow of the resin can be adjusted without changing the shape of the upper case, it is not necessary to provide a space for adjustment between the inner surface of the upper case 12 and other parts, and the suction body can be further improved. Miniaturization can be achieved.

  In this embodiment, the floor moving type vacuum cleaner has been described. However, the present invention is not limited to this and can be applied to an upright type or stick type vacuum cleaner. In this embodiment, the molding method is two-color molding. However, the molding method is not limited to this, and insert molding or three-color molding may be used.

  As described above, according to the present embodiment, the restriction on the shape of the upper case 12 that is an external part is reduced, the number of parts and the number of processes are small, the assembly is easy, and the structure is simple and the cost is reduced. It is possible to provide a mouthpiece having an excellent appearance without impairing the quality.

  Further, according to the present embodiment, even when the secondary molded portion has a complicated shape and a weld line appears on the appearance, the primary molded A portion 121A is projected without changing the shape of the upper case 12. By providing the part 121a, the flow of the resin of the secondary molding A part 122A can be adjusted, and the place where the weld line is generated can be intentionally moved to a place where the appearance is hardly noticeable.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 3 Hose 4 Hand operation part 5 Extension pipe 6 2nd suction body 8 Bumper 10 Suction body 10A Suction body 10B Suction joint 11 Lower case 12 Upper case 100 Suction port 121 Primary molding part 121A Primary molding A part 121a Convex part 122 Secondary molding part 122A Secondary molding A part 122B Secondary molding B part 125 Switching part 126 Opening part 127 Seal 128 Gate 129 Weld line 130 Resin flow 140 Rotating cleaning body
302 to 305 Cleaning member 306 Tubular substrate

Claims (12)

For vacuum cleaners, which are formed by attaching an upper case to a lower case, have a suction chamber having an opening facing the surface to be cleaned on the lower surface, and a rotary cleaning body rotatably arranged in the suction chamber In the mouthpiece,
The upper case is integrally molded from two or more types of materials or the same material by two-color molding or insert molding, and the upper and lower portions of the suction body for the vacuum cleaner are located near the switching portion between the primary molding portion and the secondary molding portion. A mouthpiece for a vacuum cleaner, characterized in that a primary molded portion and a secondary molded portion are provided so as to overlap in a direction. The mouthpiece according to claim 1,
The mouthpiece for a vacuum cleaner, wherein the front side and the side surface direction of the secondary molded part are covered with a buffer member. The mouthpiece for a vacuum cleaner according to any one of claims 1 and 2,
In addition to the primary molding part of the secondary molding part of the upper case and the part provided in the vertical direction of the mouthpiece for the vacuum cleaner, one or a plurality of openings are provided, and molding flow is provided. A mouthpiece for a vacuum cleaner characterized by having a structure that is divided into a plurality of paths. In the mouthpiece for vacuum cleaners of any one of Claims 1-3,
According to the shape of the primary molding portion provided so as to overlap the secondary molding portion of the upper case in the vertical direction of the suction body for the vacuum cleaner, the molding flow of the secondary molding portion can be adjusted. A mouthpiece for an electric vacuum cleaner characterized by that.   The vacuum cleaner mouthpiece according to any one of claims 1 to 4, an extension pipe connected to the vacuum cleaner mouthpiece, an operation pipe connected to the extension pipe, and the operation pipe A hose connected to the hose, and a vacuum cleaner main body connected to the hose and provided with a dust collecting unit and an electric blower, and the air sucked from the suction body passes through the extension pipe, the operation pipe, and the hose. A vacuum cleaner sucked into the main body of the vacuum cleaner. For vacuum cleaners, which are formed by attaching an upper case to a lower case, have a suction chamber having an opening facing the surface to be cleaned on the lower surface, and a rotary cleaning body rotatably arranged in the suction chamber In the mouthpiece,
The rear part of the upper case is made of a first resin,
The front part of the upper case is composed of a second resin having a large content of a specific material compared to the first resin,
The front part of the upper case and the rear part of the upper case are integrally formed,
In the switching portion between the first resin portion at the rear of the upper case and the second resin portion at the front of the upper case, the first resin portion at the rear of the upper case and the front portion of the upper case And the second resin portion at the front of the upper case appears on the surface of the suction body for the vacuum cleaner. Mouthpiece for vacuum cleaner. The mouthpiece for a vacuum cleaner according to claim 6,
The mouthpiece for a vacuum cleaner, wherein the specific material is a material that improves design properties. The mouthpiece for a vacuum cleaner according to claim 6,
The vacuum cleaner mouthpiece, wherein the specific material is aluminum. The mouthpiece for a vacuum cleaner according to claim 6,
The mouthpiece for a vacuum cleaner, wherein the second resin is a metallic mold. In the suction body for vacuum cleaners of any one of Claims 6-9,
The front part of the upper case has a convex shape in a cross section viewed from the side surface,
The mouthpiece for a vacuum cleaner, wherein the switching portion reaches the top of the convex shape. The mouthpiece for a vacuum cleaner according to claim 10,
The mouthpiece for a vacuum cleaner, wherein the switching portion is formed from a base portion to a top portion of the convex shape.   The mouthpiece for a vacuum cleaner according to any one of claims 6 to 11, an extension pipe connected to the mouthpiece for a vacuum cleaner, an operation pipe connected to the extension pipe, and the operation pipe A hose connected to the hose, and a vacuum cleaner main body connected to the hose and provided with a dust collecting unit and an electric blower, and the air sucked from the suction body passes through the extension pipe, the operation pipe, and the hose. A vacuum cleaner sucked into the main body of the vacuum cleaner.

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