Suction port of vacuum cleaner
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2026-03-18
Smart Images
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Abstract
Description
[Technical field]
[0001] The present invention relates to a suction head of a vacuum cleaner that is equipped with a wiper plate for wiping a surface to be cleaned. [Background technology]
[0002] 2. Description of the Related Art There is a known invention of a mop in which a wiping cloth made of paper, fabric or the like is replaceably attached to a wiping cloth attachment member connected to the tip of a handle bar (Patent Document 1).
[0003] The mop described in Patent Document 1 comprises a wiping cloth for sweeping, a flat, elongated wiping cloth mounting member for interchangeably mounting the wiping cloth, and an operating handle connected to the wiping cloth mounting member. The wiping cloth mounting member is formed in a thin, rectangular plate shape from a flexible elastic material such as synthetic rubber or synthetic resin, and has locking means for locking the ends of the wrapped wiping cloth at positions near the four corners, and the handle is connected to the center of the top surface via a connecting means. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Patent No. 3457402 Summary of the Invention [Problem to be solved by the invention]
[0005] However, the wiping cloth of the mop described in Patent Document 1 requires time and effort to be engaged with the engaging means formed near the four corners, and when the engaging means is formed as a cut hole, the wiping cloth may be torn off and remain on the engaging means, requiring work to remove it. Also, since large dust particles cannot be wiped off with the wiping cloth, there is a problem that the same spot must be cleaned again with a vacuum cleaner.
[0006] The present invention is devised to solve the above-mentioned problems of the conventional technology, and aims to provide a suction port of a vacuum cleaner that is easy to attach and detach to a cleaning sheet, improves workability, and can remove not only large dust particles but also small dust particles adhering to the surface to be cleaned. [Means for solving the problem]
[0007] In order to solve the above-mentioned problems, the invention of claim 1 relates to an inlet of a vacuum cleaner having a suction nozzle for sucking in dust on a surface to be cleaned and a wiper plate for wiping the surface to be cleaned, wherein the suction nozzle has a substantially rectangular opening formed on its bottom surface, a suction chamber formed by a plurality of inner wall surfaces surrounding the opening, and a suction port formed at the top of the suction chamber and connecting the opening to the vacuum cleaner body, the wiper plate is capable of fixing a cleaning sheet to its bottom surface via an attachment / detachment means, and the bottom surface is positioned near the opening of the suction nozzle, and the suction nozzle is characterized in that a narrowing portion is formed near approximately the longitudinal center of the opening, narrowing the distance between the opposing inner wall surfaces of the suction chamber.
[0008] In the invention of claim 1, the cleaning sheet can be fixed to the bottom surface of the wiper plate via the attachment / detachment means, improving workability. Also, by using a suction nozzle in which a constriction part is formed in which the distance between the opposing inner wall surfaces of the suction chamber is narrowed near the approximate center of the longitudinal direction of the opening, the suction force at the approximate center of the opening where dust is most concentrated can be improved, and a compact shape can be achieved while maintaining the desired suction force overall, resulting in a suction inlet of a vacuum cleaner that can remove not only large dust particles but also small dust particles attached to the surface to be cleaned.
[0009] The invention of claim 2 is characterized in that in the invention of claim 1, the height from the opening surface to the upper surface of the suction chamber is lower at the ends than at the approximate center in the longitudinal direction of the opening, which allows the suction nozzle to maintain a certain suction force even at the ends of the opening, thereby improving cleaning efficiency.
[0010] The invention of claim 3 is characterized in that in the invention of claim 1 or 2, the suction chamber has a smaller cross-sectional area at the end of the opening than at the approximately central part in the longitudinal direction of the opening in a cross section taken along the short side of the opening. This allows the suction nozzle to maintain a certain suction force even at the end of the opening, improving cleaning efficiency. Effect of the Invention
[0011] The invention of claim 1 can improve the workability of fixing the cleaning sheet to the wiper plate, and can improve the suction force at the approximate center of the opening where dust is most concentrated, thereby making it possible to maintain a desired suction force overall while making it compact in shape. Also, the inventions of claims 2 and 3 can improve cleaning efficiency by maintaining a predetermined suction force even at the end side of the opening of the suction nozzle. [Brief description of the drawings]
[0012] [Figure 1] FIG. 1A is a perspective view showing a suction port of the first embodiment; FIG. 1B is a perspective view showing the suction port of the first embodiment with a cleaning sheet fixed thereto; [Diagram 2] (a) is a side view showing the suction port of the first embodiment; (b) is a side view showing the suction port of the first embodiment with a cleaning sheet fixed thereto; (c) is a cross-sectional view showing the suction port of the first embodiment; [Diagram 3] FIG. 1A is a bottom view showing the suction port of the first embodiment; FIG. 1B is a bottom view showing the suction port of the first embodiment with a cleaning sheet fixed thereto; [Figure 4] Cross section along the line AA in Figure 1(a) [Diagram 5] (a) is a cross-sectional view showing the suction port of the first embodiment; (b) is a cross-sectional view showing the suction port of the first embodiment; [Figure 6] FIG. 13A is a perspective view showing a second cushioning member used in the suction port of the second embodiment; FIG. 13B is a cross-sectional view showing the suction port of the second embodiment; [Figure 7] FIG. 13 is a perspective view showing an intake port of a third embodiment; [Figure 8]11A to 11C are side views showing a state in which the suction port of the third embodiment is used. [Figure 9] (a) A bottom view showing the suction port of the fourth embodiment; (b) A side view showing the suction port of the fourth embodiment; (c) A perspective view showing the suction port of the fourth embodiment. [Figure 10] (a) is a perspective view showing a suction port of the fifth embodiment; (b) is a perspective view showing a state in which a wiper plate is removed from the suction port of the fifth embodiment; (c) is a perspective view showing a wiper plate used in the suction port of the fifth embodiment; [Figure 11] FIG. 13A is a perspective view showing an operating handle used in a wiper plate according to a fifth embodiment; FIG. 13B is a perspective view showing a state in which the operating handle is attached to the wiper plate according to the fifth embodiment; [Figure 12] 13A to 13C are side views showing a state in which the suction port of the sixth embodiment is used. [Figure 13] (a) is a perspective view of the suction port of the seventh embodiment with a cleaning sheet fixed thereto; (b) is a perspective view of the suction port of the seventh embodiment as viewed from the bottom; (c) is a bottom view of the suction port of the seventh embodiment; [Figure 14] Cross section along line B-B in Fig. 13(a) [Figure 15] FIG. 13A is a perspective view showing a suction port of the eighth embodiment; FIG. 13B is a bottom view showing a suction port of the eighth embodiment; FIG. 13C is a side view showing the suction port of the eighth embodiment with a cleaning sheet fixed thereto; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to this embodiment. FIG. 1(a) is a perspective view showing a suction port of the first embodiment, and FIG. 1(b) is a perspective view of the suction port of the first embodiment with a cleaning sheet fixed thereto. FIG. 2(a) is a side view of the suction port of the first embodiment, and FIG. 2(b) is a side view of the suction port of the first embodiment with a cleaning sheet fixed thereto. Also, FIG. 2(c) is a cross-sectional view of the suction port of the first embodiment. FIG. 3(a) is a bottom view of the suction port of the first embodiment, and FIG. 3(b) is a bottom view of the suction port of the first embodiment with a cleaning sheet fixed thereto. FIG. 4 is a cross-sectional view taken along line AA of FIG. 1(a). FIG. 5(a) is a cross-sectional view of the suction port of the first embodiment, and FIG. 5(b) is a cross-sectional view of the suction port of the first embodiment. The first embodiment of the suction port of the vacuum cleaner according to the present invention will be described below with reference to these figures.
[0014] The suction port 10 of the vacuum cleaner in the first embodiment of the present invention has a suction nozzle 1 that sucks in dust on the surface to be cleaned, and a wiper plate 2 that wipes the surface to be cleaned. The suction nozzle 1 has a substantially rectangular opening 1a formed on the bottom surface, a suction chamber 1c formed by a plurality of inner wall surfaces 1b surrounding the opening 1a, and a suction port 1d formed at the top of the suction chamber 1c and connecting the opening 1a to the vacuum cleaner body.
[0015] The cleaning sheet 3 can be fixed to the bottom surface 2b of the wiper plate 2 via an attachment / detachment means 2a, and the bottom surface 2b is arranged in the vicinity of the opening 1a of the suction nozzle 1. The suction nozzle 1 has a constriction portion 1e formed near approximately the center of the longitudinal direction of the opening 1a, where the distance between the opposing inner wall surfaces 1b, 1b of the suction chamber 1c is narrowed.
[0016] The suction port 10 of the first embodiment employs a brush as the attachment / detachment means 2a, and the brush 2a is formed linearly along the longitudinal direction of the upper surface of the wiper plate 2. In addition, brushes 2a are formed along the longitudinal direction at two locations on the lower surface of the wiper plate 2. The brushes 2a are entangled with the cleaning sheet 3, which is mainly made of nonwoven fabric, thereby fixing the cleaning sheet 3 to the wiper plate 2.
[0017] The wiper plate 2 is composed of a wiper plate body 2c, a first buffer member 2d (eg, sponge) formed of different soft materials, and a second buffer member 2e (eg, elastomer resin).
[0018] As shown in Figs. 5(a) and (b), the suction port 10 of the first embodiment has a plate-shaped base protruding backward at the bottom of the rotating tube 7, and a spring 5 (see Fig. 5) is provided on the top surface of the base, and a buffer piece 4 is provided at the tip of the spring 5. The buffer piece 4 abuts against the connecting tube 6 by receiving the urging force of the spring 5, and frictional resistance occurs between the spring 5 and the connecting tube 6, thereby preventing the suction nozzle 1 and the wiper plate 2 from being reversed. The same effect can be obtained by forming the spring 5 on the top surface of the wiper plate and abutting the buffer piece 4 against the connecting tube 6. Furthermore, when the buffer piece 4 abuts against the rotating tube 7 instead of the connecting tube 6, frictional resistance occurs when the rotating tube 7 rotates, which assists the user in smooth rotation.
[0019] As shown in Figures 1(a) and (b), the suction port 10 of the first embodiment has a notch 8a for checking the position when installing the cleaning sheet 3 and a protrusion 8b for alignment formed on both sides of the suction port 10 between the suction nozzle 1 and the wiper plate 2.
[0020] The cleaning sheet 3 is formed with approximately the same width as the horizontal width of the wiper plate 2, and when the suction port 10 is placed on top of the cleaning sheet 3, the notches 8a, 8a on both sides make it possible to check whether the cleaning sheet 3 is attached correctly in the horizontal position. In addition, the cleaning sheet 3 can be fixed in the appropriate position by attaching the cleaning sheet 3 so that the front end of the cleaning sheet 3 matches the alignment protrusions 8b, 8b.
[0021] This allows the cleaning sheet 3 to be placed on the surface to be cleaned, and the user to simply place the suction port 10 on it while standing, allowing the cleaning sheet 3 to be attached to an appropriate position on the suction port 10. Therefore, when the suction port 10 is viewed from above, the position of the cleaning sheet 3 can be ascertained, and the position can be fine-tuned without touching the suction port 10 or the cleaning sheet 3.
[0022] As shown in Fig. 2(c), when the suction port 10 of the first embodiment is stored, a small gap (of the order of a few millimeters) is formed between the upper surface of the wiper plate 2 and the lower surface of the rotating tube 7 or the connecting tube 6. When the suction port 10 is in use, the rotating tube 7 or the connecting tube 6 is structured to bend slightly downward or rotate when the suction port 10 is moved. This allows the rotating tube 7 or the connecting tube 6 to press the wiper plate 2 from above, and firmly presses against approximately the center of the wiper plate 2.
[0023] The bending or rotation of the rotating pipe 7 or the connecting pipe 6 can be achieved either by using a flexible material or by providing an axis for rotation. In addition, by providing a slight recess on the upper surface of the wiper plate 2 that comes into contact with the rotating pipe 7 or the connecting pipe 6, it is possible to achieve a structure that transmits the holding force sufficiently and safely by making surface contact with the rotating pipe 7 or the connecting pipe 6, rather than by making point contact.
[0024] The force exerted when the user moves the suction port 10 is transmitted to the suction nozzle 1 through the connecting tube 6 and the rotating tube 7, and is therefore difficult to transmit to the wiper plate 2 located behind the suction nozzle 1, resulting in insufficient cleaning effect. By using the above configuration, therefore, the approximate center of the wiper plate 2 can be firmly pressed, improving the cleaning effect.
[0025] 2(a) to 2(c), in the suction port 10 of the first embodiment, the bristles 2f of the brush 2a are planted with their longitudinal direction inclined with respect to the wiper plate 2. This allows the bristles 2f to penetrate deep into the cleaning sheet 3, which is mainly made of nonwoven fabric, and to be firmly fixed therein by the cleaning action of moving the suction port 10 back and forth.
[0026] The inclination direction of the brushes 2a is such that the brush 2a on the front side of the wiper plate 2 is inclined backward, and the brush 2a on the rear side of the wiper plate 2 is inclined forward. This prevents the brushes from slipping out, and firmly secures the cleaning sheet 3. Note that the brushes 2a on the front side of the wiper plate 2 are inclined forward, and the brush 2a on the rear side of the wiper plate 2 are inclined backward, and this is also included in the present invention, as they are also prevented from slipping out.
[0027] In addition, even if the inclination directions of the brush 2a on the front side and the brush 2a on the rear side of the wiper plate 2 are set to the left and right, respectively, this structure is difficult to come off due to the force generated when the suction port 10 moves in the front and rear directions, and this is also included in the present invention. In addition, when the direction of the bristles 2f inside the brush 2a is inclined in various ways (when the tips of the bristles 2f face in various directions), the bristles 2f easily enter the inside of the cleaning sheet 3 and have a preventive effect, so this is also included in the present invention. Furthermore, for the brush 2a formed on the upper surface of the wiper plate 2, inclining the bristles 2f to the front side prevents the bristles from coming off when the cleaning sheet 3 is wrapped around it from the rear side and fixed to the bottom surface 2b, so this is also included in the present invention.
[0028] 3(a), in the suction port 10 of the first embodiment, the brush 2a is arranged so as to have an intermittent portion 2g in the width direction of the wiper plate 2. This improves the degree of freedom of the tips of the bristles 2f, allowing the bristles 2f to be inserted deep into the cleaning sheet 3. It is also possible to provide a groove in the width direction in the bottom surface 2b of the wiper plate 2, and sequentially insert a plurality of straight brushes into this groove, so that the brushes themselves can oscillate with a degree of freedom in the groove direction, and this is also included in the present invention.
[0029] As shown in FIG. 5(a), the suction port 10 of the first embodiment is configured such that, when in use, a space 2h is formed between the lower surface of the wiper plate body 2c and the upper surface of the first buffer member 2d. This is because the second buffer member 2e made of an elastomer resin has spring properties, and as shown in FIG. 5(b), when the cleaning sheet 3 is fixed, the first buffer member 2d and the second buffer member 2e are recessed inward, thereby eliminating the space 2h. As a result, when in use, the second buffer member 2e protrudes outward, so that the cleaning sheet 3 can be pressed against the surface to be cleaned, thereby reducing uneven cleaning. Note that the first buffer member 2d and the second buffer member 2e are made of different soft materials, and as long as they have the same inventive effects, they are included in the present invention without being limited to sponge or elastomer resin.
[0030] Fig. 6(a) is a perspective view showing a second buffer member used in the suction port of the second embodiment, and Fig. 6(b) is a cross-sectional view showing the suction port of the second embodiment. The second embodiment of the suction port of the vacuum cleaner according to the present invention will be described below using these figures. The second buffer member 22e used in the suction port 20 of the second embodiment has a cone-shaped protrusion 22i formed in the center, and a plurality of ribs 22j extending in a direction angled with respect to the radial direction are formed on the outer circumferential surface of the protrusion 22i.
[0031] When the second buffer member 22e is pressed against the surface to be cleaned, the multiple ribs 22j generate a biasing force, causing the central cone-shaped protrusion 22i to push back against the wiper plate body, thereby pressing the cleaning sheet 3 firmly against the surface to be cleaned and reducing uneven cleaning.
[0032] FIG. 7 is a perspective view showing a suction port of the third embodiment, and FIGS. 8(a) to 8(c) are side views showing a state in which the suction port of the third embodiment is used. The third embodiment of the suction port of the vacuum cleaner according to the present invention will be described below using these figures. In the suction port 30 of the third embodiment, a brush 32a serving as a detachable means is formed on the rear side surface of the wiper plate 32, and the brush 32a on the side surface is attached so as to match the rear end of the cleaning sheet 33 placed on the surface to be cleaned (as shown in FIG. 8(a)). By placing the bottom surface of the wiper plate 32 on the cleaning sheet 33 as it is (as shown in FIG. 8(b)), the cleaning sheet 33 can be fixed at an appropriate position on the wiper plate 32 without being displaced. It should be noted that a brush serving as a detachable means may be provided on the front side surface as well as the rear side surface, and a configuration in which the cleaning sheet is attached from the front side is also included in the present invention.
[0033] 8(c), the connecting pipe 36 can be inclined in either direction from vertically above the wiper plate 32. This allows the cleaning sheet 33 formed on the rear side of the wiper plate 32 to clean the wall surface, improving the performance of the suction port 30 when in use.
[0034] Fig. 9(a) is a bottom view showing the suction port of the fourth embodiment, Fig. 9(b) is a side view showing the suction port of the fourth embodiment, and Fig. 9(c) is a perspective view showing the suction port of the fourth embodiment. The fourth embodiment of the suction port of the vacuum cleaner according to the present invention will be described below using these figures. The suction port 40 of the fourth embodiment is configured to have a blade 9 between the rear of the suction nozzle 41 and the brush 42a on the front side of the bottom surface of the wiper plate 42. This blade 9 is intended to obtain the effect of blocking dust and the effect of sweeping up the dust, and the cleaning sheet 43 is fixed to the wiper plate 42 by being hooked onto the tip of the blade 9.
[0035] In the suction port 40 of the fourth embodiment, by interposing the cleaning sheet 43 between the blade 9 and the cleaning sheet 43, the surface to be cleaned is not damaged by the blade 9 and frictional resistance (sliding resistance) can be reduced. In addition, since the blade 9 protrudes below the suction port 40 and the blade 9 itself has stiffness (is not easily bent), a part of the cleaning sheet 43 can be pressed firmly against the surface to be cleaned, improving the cleaning effect.
[0036] Fig. 10(a) is a perspective view showing a suction port of the fifth embodiment, Fig. 10(b) is a perspective view showing the suction port of the fifth embodiment with the wiper plate removed, and Fig. 10(c) is a perspective view showing the wiper plate used in the suction port of the fifth embodiment. Fig. 11(a) is a perspective view showing an operating handle used in the wiper plate of the fifth embodiment, and Fig. 11(b) is a perspective view showing the operating handle attached to the wiper plate of the fifth embodiment. The fifth embodiment of the suction port of the vacuum cleaner according to the present invention will be described below with reference to these figures.
[0037] The suction port 50 of the fifth embodiment is configured so that the suction nozzle 51 at the front and the wiper plate 52 at the rear can be separated using the attachment means 11. This allows it to be used as a vacuum cleaner with only the suction nozzle 51, as shown in Fig. 10(b). Also, the attachment means 11 can be used to attach the operating handle 12 shown in Fig. 11(a), and it can be used as a floor wiper 13, as shown in Fig. 11(b).
[0038] The suction port 50 of the fifth embodiment is configured such that the cutout portion 14 is formed on one or both of the left and right sides of the wiper plate 52. This allows the cleaning sheet 53 to be fixed to the bottom surface of the wiper plate 52 so as to protrude outward from the cutout portion 14, so that when removing the cleaning sheet 53, the part of the cleaning sheet 53 protruding from the cutout portion 14 can be stepped on with a foot to easily remove the cleaning sheet 53.
[0039] 12(a)-(c) are side views showing the use state of the suction port of the sixth embodiment. The sixth embodiment of the suction port of the vacuum cleaner according to the present invention will be described below with reference to these figures. The suction port 60 of the sixth embodiment is provided with a knock cam mechanism 16 (a mechanism similar to that for inserting and removing the core of a ballpoint pen) having spring members 16a, 16b between the lower surface of the wiper plate 62 and the upper surface of the buffer member 15, and the buffer member 15 can be transformed into a state in which it largely protrudes from the bottom surface of the wiper plate 62 (the state of FIG. 12(b)) and a state in which it protrudes slightly (the state of FIG. 12(a)), and can be used as a means for attaching and detaching the cleaning sheet 63.
[0040] The procedure for attaching and detaching the cleaning sheet 63 at the suction port 60 of the sixth embodiment is as follows. First, the buffer member 15 is brought into a state in which it protrudes largely from the bottom surface of the wiper plate 62. Next, when the buffer member 15 is pressed against the cleaning sheet 63 placed on the surface to be cleaned, the buffer member 15 retracts into the inside of the wiper plate 62 and the brush 62a, which is the attachment / detachment means on the bottom surface of the wiper plate 62, and the cleaning sheet 63 are fixed to the cleaning sheet 63. In this state, the surface to be cleaned is cleaned. When the cleaning is completed and the cleaning sheet 63 is to be removed or replaced, the buffer member 15 is pressed against the surface to be cleaned with the cleaning sheet 63 placed on the surface to be cleaned again. This causes the buffer member 15 to protrude largely by the knock cam mechanism 16, so that the cleaning sheet 63 fixed to the brush 62a can be peeled off and removed, as shown in FIG. 12(c).
[0041] Incidentally, instead of the knock cam mechanism 15, a configuration may be used in which a buffer member protrudes when a button provided on the upper surface of the wiper plate is pressed, and the buffer member returns to its initial position by being pressed against the surface to be cleaned; this is also included in the present invention.
[0042] Fig. 13(a) is a perspective view of the suction port of the seventh embodiment with a cleaning sheet fixed thereto, Fig. 13(b) is a perspective view of the suction port of the seventh embodiment seen from the bottom side, and Fig. 13(c) is a bottom view of the suction port of the seventh embodiment. Fig. 14 is a BB cross-sectional view of Fig. 13(a). The seventh embodiment of the suction port of the vacuum cleaner according to the present invention will be described below using these figures. In the suction port 70 of the seventh embodiment, intake passages 17a and 17b are formed from the vicinity of both ends of the suction nozzle 71 in the longitudinal direction toward the vicinity of both ends (both left and right sides) of the wiper plate 72, and parts of the intake passages 17a and 17b are configured to communicate with intake holes 18a, 18b, 18c, and 18d formed in the bottom surface of the wiper plate 72. As a result, when the vacuum cleaner is operated, suction force is also generated in the suction holes 18a, 18b, 18c, and 18d, so that the cleaning sheet 73 can be attracted thereto.
[0043] The intake passages 17a, 17b may be formed at any position within the suction nozzle 71, and the intake holes 18a, 18b, 18c, 18d may be formed at predetermined positions of the wiper plate 72 facing the four corners of the cleaning sheet 73. Also, a brush configuration, which is the attachment / detachment means shown in the other embodiments, may be added, and in that case, a synergistic effect can be achieved to more firmly fix the cleaning sheet 73 to the wiper plate 72.
[0044] Fig. 15(a) is a perspective view showing a suction port of the eighth embodiment, Fig. 15(b) is a bottom view showing the suction port of the eighth embodiment, and Fig. 15(c) is a side view of the suction port of the eighth embodiment with a cleaning sheet fixed thereto. The eighth embodiment of the suction port of the vacuum cleaner according to the present invention will be described below using these figures. The suction port 80 of the eighth embodiment is equipped with a rotating brush 19a, and brushes 82a, 82a, which are detachable means, are arranged on a suction port body 19b located behind the rotating brush 19a.
[0045] As a result, the cleaning sheet 83 can be attached so as to cover the entire bottom surface of the suction port body 19b behind the rotating brush 19a, as shown in Fig. 15(c). It is also possible to configure the suction port 80 of the eighth embodiment by attaching brushes 82a, 82a, one of which has an adhesive surface, to the bottom surface of a typical suction port body 19b that is commercially available. [Industrial Applicability]
[0046] The suction port of the vacuum cleaner according to the present invention is used as a cleaning tool equipped with a wiper plate for wiping a surface to be cleaned. [Explanation of symbols]
[0047] 1, 41, 51, 71 Suction nozzle 1a aperture 1b Inner wall surface 1c Suction chamber 1d suction port 1e Squeezing section 2, 32, 42, 52, 62, 72 Wiper plate 2a, 32a, 42a, 62a, 82a Attachment / detachment means (brush) 2b Bottom 2c Wiper plate body 2d 1st buffer member 2e Second cushioning member 2f Hair material 2g Intermittent part 2h space section 3, 33, 43, 53, 63, 73, 83 Cleaning Sheet 4 Buffer piece 5. Spring 6, 36 Connecting pipe 7 Rotating tube 8a Notch 8b protrusion 9 Blades 10, 20, 30, 40, 50, 60, 70, 80 Vacuum cleaner suction port 11 Mounting means 12 Operation handle 13 Flooring wiper 14 Notch 15 Cushioning material 16 Knock cam mechanism 16a, 16b Spring members 17a, 17b Intake passage 18a, 18b, 18c, 18d Air intakes 19a Rotating Brush 19b Inlet body 22i protrusion 22j Rib 22k flat part
Claims
1. In the suction port of an electric vacuum cleaner having a suction nozzle for sucking up dust from the surface to be cleaned and a wiper plate for wiping the surface to be cleaned, The suction nozzle has a substantially rectangular opening formed on its bottom surface, a suction chamber formed by a plurality of inner wall surfaces surrounding the opening, and a suction port formed at the top of the suction chamber that connects the opening to the vacuum cleaner body. The wiper plate is such that a cleaning sheet can be fixed to its bottom surface via a means for attachment and detachment, and the bottom surface is positioned near the opening of the suction nozzle. The suction nozzle is a vacuum cleaner suction port in which a constricted portion is formed in front of the suction opening and near the approximate center of the longitudinal direction of the opening, where the distance between the opposing inner wall surfaces of the suction chamber narrows.
2. In the suction port of an electric vacuum cleaner having a suction nozzle for sucking up dust from the surface to be cleaned and a wiper plate for wiping the surface to be cleaned, The suction nozzle has a substantially rectangular opening formed on its bottom surface, a suction chamber formed by a plurality of inner wall surfaces surrounding the opening, and a suction port formed at the top of the suction chamber that connects the opening to the vacuum cleaner body. The wiper plate is such that a cleaning sheet can be fixed to its bottom surface via a means for attachment and detachment, and the bottom surface is positioned near the opening of the suction nozzle. The aforementioned attachment / detachment means is a brush formed near both ends in the front-to-back direction of the bottom surface of the wiper plate, with multiple bristles planted in a straight line along the longitudinal direction of the wiper plate, which is the suction port of the vacuum cleaner.
3. The suction chamber is characterized in that the height from the opening surface to the top surface is lower at the ends than at approximately the center in the longitudinal direction of the opening, as described in claim 1 or 2.
4. The suction chamber of the vacuum cleaner according to claim 1 or 2 is characterized in that, in a cross-section with the short side of the opening as the plane, the cross-sectional area at the ends is smaller than that at approximately the center of the long side of the opening.