Suction inlet of electric dust collector

Abstract

The invention provides a suction inlet of an electric dust collector, which is easy to assemble and disassemble relative to a cleaning sheet, can improve operability, and can remove not only large dust but also small dust adhering to a cleaned surface. The suction inlet (10) of the electric dust collector is provided with a suction nozzle (1) for sucking dust on a cleaned surface; and a wiping plate (2) that wipes and cleans the surface to be cleaned, the suction nozzle (1) being provided with: a substantially rectangular opening (1a) formed in the bottom surface; a substantially box-shaped suction chamber (1c) formed by an inner wall surface (1b) surrounding the opening (1a); and a suction port (1d) which is formed at the upper part of the suction chamber (1c) and enables the opening (1a) to be communicated with the electric dust collector main body.

Description

Technical Field

[0001] The present invention relates to the suction inlet of an electric vacuum cleaner having a wiping plate for wiping and cleaning surfaces. Background Technology

[0002] A previously known invention of a mop has a wiping cloth mounting component connected to the front end of the mop handle that can be interchangeably fitted with a wiping cloth made of paper or cloth (Patent Document 1).

[0003] The mop described in Patent Document 1 includes: a wiping cloth for wiping and cleaning; a flat and elongated wiping cloth mounting member for interchangeably mounting the wiping cloth; and an operating mop bar connected to the wiping cloth mounting member. The wiping cloth mounting member is configured to be formed into a thin rectangular plate shape using a soft and elastic material such as synthetic rubber or synthetic resin. Locking members are located near the four corners to lock the ends of the wound wiping cloth. The mop bar is connected to the center of the upper surface via a connecting member. Existing technical documents Patent documents

[0004] Patent Document 1: Japanese Patent No. 3457402 Summary of the Invention The problem to be solved by the present invention

[0005] However, the mop cloth described in Patent Document 1 requires effort to secure it to locking components formed near the four corners. Furthermore, when the locking components are formed with cut-in holes, there is a possibility that the cloth may tear and remain inside the locking components, necessitating removal. Additionally, since larger dust particles cannot be removed with the cloth, it is necessary to clean the same areas again with an electric vacuum cleaner.

[0006] The present invention was made to solve the above-mentioned problems, and its purpose is to provide an intake port of an electric vacuum cleaner that is easier to install and remove than the cleaning blades, improves workability, and can remove not only larger dust particles but also smaller dust particles attached to the surface being cleaned. Methods for solving problems

[0007] To address the aforementioned problems, the invention of technical solution 1 is characterized in that the suction inlet of the electric vacuum cleaner has: a suction nozzle for attracting dust from the surface to be cleaned; and a wiping plate for wiping the surface to be cleaned. The suction nozzle has: a generally rectangular opening formed on the bottom surface; a suction chamber formed by a plurality of inner wall surfaces surrounding the opening; and a suction port formed on the upper part of the suction chamber, such that the opening communicates with the main body of the electric vacuum cleaner. The wiping plate can be fixed to the bottom surface of the wiping plate via a disassembly and assembly component, and the bottom surface is disposed near the opening of the suction nozzle. The suction nozzle has a narrowed portion formed near the approximately central portion in the long side direction of the opening, where the distance between the opposing inner wall surfaces of the suction chamber narrows.

[0008] In the invention of technical solution 1, since the wiping plate can be fixed to the bottom surface via a disassembly and assembly component, workability can be improved. In addition, by using a suction nozzle with a narrowed portion formed near the center of the long side of the opening, where the distance between the opposing inner wall surfaces of the suction chamber narrows, the suction force at the center of the opening where dust is most concentrated can be improved, and the desired suction force can be maintained as a whole, forming a compact shape. This allows for the formation of a suction port for an electric vacuum cleaner that can remove not only larger dust particles but also smaller dust particles adhering to the surface being cleaned.

[0009] The invention of technical solution 2, in contrast to technical solution 1, is characterized in that the height of the suction chamber from the opening surface to the upper surface is lower at the end than approximately at the center along the long side of the opening. Therefore, the suction nozzle can maintain a predetermined suction force even at the end of the opening, thereby improving cleaning efficiency.

[0010] The invention of technical solution 3, in accordance with the invention of technical solutions 1 or 2, is characterized in that, in a cross-section of the suction chamber with the short side of the opening as the plane, the cross-sectional area at the end is smaller than the cross-sectional area at approximately the center of the opening with the long side as the plane. Therefore, the suction nozzle can maintain a predetermined suction force even at the end of the opening, thereby improving cleaning efficiency. Invention Effects

[0011] The invention of technical solution 1 improves the workability of fixing the cleaning blade to the wiping plate and enhances the suction force at approximately the center of the opening where dust is most concentrated, maintaining the desired suction force overall and achieving a compact shape. Furthermore, the inventions of technical solutions 2 and 3 maintain the prescribed suction force even at the end of the suction nozzle opening, thus improving cleaning efficiency. Attached Figure Description

[0012] Figure 1(a) is a perspective view of the inlet of the first embodiment, and (b) is a perspective view of the inlet of the first embodiment with a cleaning blade fixed thereon. Figure 2 (a) is a side view showing the inlet of the first embodiment, (b) is a side view showing the inlet of the first embodiment with the cleaning blade fixed thereon, and (c) is a cross-sectional view showing the inlet of the first embodiment. Figure 3 (a) is a bottom view showing the suction port of the first embodiment, and (b) is a bottom view showing the suction port of the first embodiment with the cleaning blade fixed thereon. Figure 4 yes Figure 1 AA section view of (a). Figure 5 (a) is a cross-sectional view showing the inlet of the first embodiment, and (b) is a cross-sectional view showing the inlet of the first embodiment. Figure 6 (a) is a perspective view showing the second buffer member used in the suction port of the second embodiment, and (b) is a cross-sectional view showing the suction port of the second embodiment. Figure 7 This is a perspective view showing the inlet of the third embodiment. Figure 8 (a) to (c) are side views showing the use state of the inlet of the third embodiment. Figure 9 (a) is a bottom view of the inlet of the fourth embodiment, (b) is a side view of the inlet of the fourth embodiment, and (c) is a perspective view of the inlet of the fourth embodiment. Figure 10 (a) is a perspective view of the suction port of the fifth embodiment, (b) is a perspective view of the suction port of the fifth embodiment with the wiping plate removed, and (c) is a perspective view of the wiping plate used in the suction port of the fifth embodiment. Figure 11 (a) is a perspective view showing the operating rod used in the wiping plate of the fifth embodiment, and (b) is a perspective view showing the state in which the operating rod is installed on the wiping plate of the fifth embodiment. Figure 12 (a) to (c) are side views showing the use state of the inlet of the sixth embodiment. Figure 13 (a) is a perspective view of the suction port of the seventh embodiment with the cleaning blade fixed thereon, (b) is a perspective view of the suction port of the seventh embodiment viewed from the bottom side, and (c) is a bottom view showing the suction port of the seventh embodiment. Figure 14yes Figure 13 (a) BB section view. Figure 15 (a) is a perspective view of the inlet of the eighth embodiment, (b) is a bottom view of the inlet of the eighth embodiment, and (c) is a side view of the inlet of the eighth embodiment with the cleaning blade fixed thereon. Detailed Implementation

[0013] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to these embodiments. Figure 1 (a) is a perspective view showing the inlet of the first embodiment. Figure 1 (b) is a perspective view of the first embodiment with the suction port fixed with the cleaning blade. Figure 2 (a) is a side view showing the inlet of the first embodiment. Figure 2 (b) is a side view of the suction port of the first embodiment with the cleaning blade fixed thereon. Additionally, Figure 2 (c) is a cross-sectional view showing the inlet of the first embodiment. Figure 3 (a) is a bottom view showing the inlet of the first embodiment. Figure 3 (b) is a bottom view of the first embodiment with the suction port and the cleaning blade fixed thereon. Figure 4 yes Figure 1 AA section view of (a). Figure 5 (a) is a cross-sectional view showing the inlet of the first embodiment. Figure 5 (b) is a cross-sectional view showing the suction inlet of the first embodiment. The first embodiment of the suction inlet of the electric vacuum cleaner of the present invention will be described below using these figures.

[0014] The suction port 10 of the electric vacuum cleaner according to the first embodiment of the present invention includes: a suction nozzle 1 for attracting dust from the surface to be cleaned; and a wiper plate 2 for wiping and cleaning the surface to be cleaned. The suction nozzle 1 has: a generally 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 on the upper part of the suction chamber 1c, so that the opening 1a communicates with the main body of the electric vacuum cleaner.

[0015] The wiping plate 2 can fix the cleaning blade 3 to the bottom surface 2b of the wiping plate 2 via the disassembly and assembly component 2a, and the bottom surface 2b is disposed near the opening 1a of the suction nozzle 1. The suction nozzle 1 has an opposing inner wall surface 1b of the suction chamber 1c near the approximate center of the long side direction of the opening 1a, and a narrowing portion 1e where the distance between 1b and 1b is narrowed.

[0016] In the first embodiment, the suction port 10 uses a brush as a disassembly and assembly component 2a, which is formed linearly along the long side of the upper surface of the wiping plate 2. Additionally, brushes 2a are also formed along the long side at two locations on the lower surface of the wiping plate 2. The brushes 2a secure the cleaning sheet 3, which is mainly made of non-woven fabric, to the wiping plate 2 by wrapping it around the cleaning sheet 3.

[0017] In addition, the wiping plate 2 is composed of a wiping plate body 2c, a first cushioning member 2d (e.g., sponge) formed of different soft parts, and a second cushioning member 2e (e.g., elastomeric resin).

[0018] like Figure 5 As shown in (a) and (b), in the first embodiment, the suction port 10 has a rearwardly protruding plate-shaped base at the lower part of the rotating tube 7, and a spring 5 is provided on the upper surface of the base (see Figure 1). Figure 5 A buffer plate 4 is provided at the front end of the spring 5. The buffer plate 4, under the force of the spring 5, abuts against the connecting tube 6, generating frictional resistance between them, thus preventing the suction nozzle 1 and the wiping plate 2 from reversing. Additionally, a spring 5 is formed on the upper surface of the wiping plate, causing the buffer plate 4 to abut against the connecting tube 6, producing the same effect. Furthermore, when the buffer plate 4 abuts against the rotating tube 7 instead of the connecting tube 6, frictional resistance is generated when the rotating tube 7 rotates, thus assisting the user in rotating smoothly.

[0019] like Figure 1 As shown in (a) and (b), the suction port 10 of the first embodiment has a cut 8a formed between the suction nozzle 1 and the wiping plate 2 for confirming the position of the cleaning blade 3 when it is set, and positioning protrusions 8b are formed on both sides of the suction port 10.

[0020] The cleaning blade 3 is formed with a width approximately the same as that of the wiping plate 2. If the suction port 10 is placed on the cleaning blade 3, it is possible to confirm whether the lateral position of the cleaning blade 3 is correctly fitted through the cutouts 8a, 8a on both sides. In addition, regarding the longitudinal position of the cleaning blade 3, by aligning the front end of the cleaning blade 3 with the positioning protrusions 8b, 8b, the cleaning blade 3 can be fixed in the appropriate position.

[0021] Therefore, by placing the cleaning blade 3 on the surface to be cleaned, and with the user standing, the cleaning blade 3 can be positioned appropriately within the suction port 10 simply by placing it there. Thus, when observing the suction port 10 from above, the position of the cleaning blade 3 can be determined, and fine adjustments can be made without touching the suction port 10 or the cleaning blade 3.

[0022] like Figure 2As shown in (c), in the first embodiment, when the suction port 10 is stored, a small gap (about a few millimeters) is formed between the upper surface of the wiping plate 2 and the lower surface of the rotating tube 7 or connecting tube 6. This configuration allows the rotating tube 7 or connecting tube 6 to slightly bend or rotate downwards when the suction port 10 is moved during use. Consequently, the rotating tube 7 or connecting tube 6 can press the wiping plate 2 from above, effectively pressing approximately the center of the wiping plate 2.

[0023] The flexure or rotation of the rotating tube 7 or the connecting tube 6 can be achieved by using a material that is easily flexible, or by using a shaft for rotation. Alternatively, the wiping plate 2, which abuts against the rotating tube 7 or the connecting tube 6, can have a small indentation on its upper surface, thus achieving surface contact with the rotating tube 7 or the connecting tube 6 instead of point contact, thereby ensuring sufficient and safe transmission of pressure.

[0024] The force exerted by the user when moving the suction inlet 10 is transmitted to the suction nozzle 1 through the connecting tube 6 and the rotating tube 7, making it difficult to transmit to the wiping plate 2 located behind the suction nozzle 1, thus failing to achieve the desired cleaning effect. Therefore, by adopting the above configuration, the wiping plate 2 can be pressed sufficiently at approximately its center, thereby improving the cleaning effect.

[0025] In the suction port 10 of the first embodiment, such as Figure 2 As shown in (a) to (c), the bristles 2f of brush 2a are planted at an angle relative to the wiping plate 2 along their long side. Thus, by moving the suction port 10 back and forth during the cleaning action, the bristles 2f can penetrate deep into the interior of the cleaning plate 3, which is mainly made of non-woven fabric, and the cleaning plate 3 can be firmly fixed in place.

[0026] The brush 2a is tilted in such a way that the brush 2a on the front side of the wiping plate 2 is tilted rearward, and the brush 2a on the rear side of the wiping plate 2 is tilted forward. This prevents them from detaching from each other, thus ensuring a secure fixation of the cleaning plate 3. Furthermore, the situation where the brush 2a on the front side of the wiping plate 2 is tilted forward and the brush 2a on the rear side of the wiping plate 2 is tilted rearward also prevents detachment, and this situation is also included in the present invention.

[0027] Furthermore, when the front and rear brushes of the wiping plate 2 are tilted in the left and right directions respectively, it becomes a structure that is difficult to detach under the force of the suction inlet 10 moving in the forward and backward directions, and this situation is also included in the present invention. Additionally, when the bristles 2f inside the brush 2a are tilted in different directions (the front ends of the bristles 2f face different directions), the bristles 2f easily enter the cleaning plate 3 and have an anti-detachment effect, and this situation is also included in the present invention. Furthermore, for the brush 2a formed on the upper surface of the wiping plate 2, by tilting the bristles 2f forward, it becomes an anti-detachment component when the cleaning plate 3 is wound around from the rear and fixed to the bottom surface 2b, and this configuration is also included in the present invention.

[0028] In the suction port 10 of the first embodiment, such as Figure 3 As shown in (a), the brush 2a is configured to have an intermittent portion 2g in the width direction of the wiping plate 2. This increases the degree of freedom of the tip of the bristles 2f, allowing the bristles 2f to be inserted deep into the cleaning blade 3. Alternatively, it can be configured such that a groove in the width direction is provided on the bottom surface 2b of the wiping plate 2, and multiple straight brushes are sequentially inserted into the groove, with the brushes themselves having a degree of freedom to oscillate in the groove direction; this configuration is also included in the present invention.

[0029] like Figure 5 As shown in (a), the suction port 10 of the first embodiment is configured such that, during use, a space 2h is formed between the lower surface of the wiping plate body 2c and the upper surface of the first buffer member 2d. This is because the second buffer member 2e, formed of elastomeric resin, is elastic, such as Figure 5 As shown in (b), when the cleaning blade 3 is fixed, the space 2h disappears due to the inward indentation of the first buffer member 2d and the second buffer member 2e. Therefore, during use, the second buffer member 2e protrudes outward, thus pressing the cleaning blade 3 against the surface being cleaned and reducing uneven cleaning. Furthermore, as long as the first buffer member 2d and the second buffer member 2e are formed of different soft materials and achieve the same inventive effect, they are not limited to sponges or elastomeric resins, but are all included in this invention.

[0030] Figure 6 (a) is a perspective view showing the second buffer member used in the suction port of the second embodiment. Figure 6 (b) is a cross-sectional view showing the suction port of the second embodiment. The second embodiment of the suction port of the electric vacuum cleaner of 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 mortar-shaped protrusion 22i formed in the center, and a plurality of ribs 22j extending in a direction having an angle with respect to the radial direction are formed on the outer peripheral surface of the protrusion 22i.

[0031] Furthermore, when the second buffer component 22e is pressed onto the surface to be cleaned, the multiple ribs 22j generate force, thus pushing back the wiping plate body at the central mortar-shaped protrusion 22i, which can forcefully press the cleaning plate 3 onto the surface to be cleaned, thereby reducing uneven cleaning.

[0032] Figure 7 This is a perspective view showing the inlet of the third embodiment. Figure 8 (a) to (c) are side views showing the use state of the suction port of the third embodiment. The third embodiment of the suction port of the electric vacuum cleaner of the present invention will be described below using these figures. In the third embodiment, a brush 32a, serving as a detachable component, is formed on the rear side of the wiping plate 32. This brush 32a is aligned with the rear end of the cleaning blade 33 placed on the surface being cleaned. Figure 8 In state (a), the bottom surface of the wiping plate 32 is placed on the cleaning plate 33. Figure 8 In state (b), the cleaning blade 33 can be fixed in the appropriate position on the wiping plate 32 without causing it to deviate. Furthermore, by providing brushes as detachable components not only on the rear side but also on the front side, a configuration for mounting the cleaning blade from the front side can be formed, which is also included in this invention.

[0033] In addition, such as Figure 8 As shown in (c), the connecting tube 36 is configured to be tilted in either the front or rear direction from the vertical above the wiping plate 32. This allows for cleaning of the wall surface using the cleaning blade 33 formed on the rear side of the wiping plate 32, improving the performance of the suction port 30 during use.

[0034] Figure 9 (a) is a bottom view showing the inlet of the fourth embodiment. Figure 9 (b) is a side view showing the inlet of the fourth embodiment. Figure 9 (c) is a perspective view showing the suction inlet of the fourth embodiment. The fourth embodiment of the suction inlet of the electric vacuum cleaner of the present invention will be described below using these figures. The suction inlet 40 of the fourth embodiment is configured such that a scraper 9 is provided between a brush 42a located behind the suction nozzle 41 and in front of the bottom surface of the wiping plate 42. This scraper 9 serves to both block and sweep away debris, and a sweeping blade 43 is fixed to the wiping plate 42 by hooking onto the front end of the scraper 9.

[0035] In the fourth embodiment, the suction port 40, by positioning the cleaning blade 43 between the surface to be cleaned and the scraper 9, prevents damage to the surface to be cleaned by the scraper 9 and suppresses frictional resistance (sliding resistance). Furthermore, the scraper 9 protrudes downwards from the suction port 40. Because the scraper 9 itself is rigid (due to its difficulty in bending), a portion of the cleaning blade 43 can be forcefully pressed against the surface to be cleaned, thereby improving the cleaning effect.

[0036] Figure 10 (a) is a perspective view showing the inlet of the fifth embodiment. Figure 10 (b) is a perspective view showing the state in the fifth embodiment where the wiping plate has been removed from the suction port. Figure 10 (c) is a perspective view showing the wiping plate used at the suction port in the fifth embodiment. Additionally, Figure 11 (a) is a perspective view showing the operating lever used in the wiping plate of the fifth embodiment. Figure 11 (b) is a perspective view showing the state in which the operating lever is mounted on the wiping plate of the fifth embodiment. The fifth embodiment of the suction inlet of the electric vacuum cleaner of the present invention will be described below using these figures.

[0037] The suction port 50 in the fifth embodiment is configured such that the front suction nozzle 51 can be separated from the rear wiping plate 52 using the mounting member 11. Thus, as... Figure 10 As shown in (b), it can be used as an electric vacuum cleaner that only draws suction from the nozzle 51. Additionally, it can be mounted using the mounting part 11. Figure 11 The lever 12 for operation shown in (a) is as follows: Figure 11 As shown in (b), it can be used as a floor wiper 13.

[0038] In the fifth embodiment, the suction port 50 is configured such that a cutout 14 is formed on one or both sides of the wiping plate 52. As a result, the cleaning plate 53 can be fixed to the bottom surface of the wiping plate 52 in such a way that it protrudes outward from the cutout 14. Therefore, when removing the cleaning plate 53, it can be easily removed by stepping on the part of the cleaning plate 53 protruding from the cutout 14.

[0039] Figure 12 (a) to (c) are side views showing the usage state of the suction port of the sixth embodiment. The sixth embodiment of the suction port of the electric vacuum cleaner of the present invention will be described below using these figures. In the sixth embodiment, the suction port 60 has a tapping cam mechanism 16 (similar to the mechanism for inserting and removing a ballpoint pen refill) with spring members 16a and 16b provided between the lower surface of the wiping plate 62 and the upper surface of the cushioning member 15, which allows the cushioning member 15 to be deformed to protrude significantly from the bottom surface of the wiping plate 62. Figure 12 (b) state) and slightly prominent state ( Figure 12 (a) state), can become a disassembly and assembly component of cleaning blade 63.

[0040] The steps for assembling and disassembling the cleaning disc 63 of the suction port 60 in the sixth embodiment are as follows. First, the buffer member 15 is positioned so that it protrudes significantly from the bottom surface of the wiping plate 62. Next, if the buffer member 15 is pressed onto the cleaning disc 63 from above the cleaning disc 63 placed on the surface to be cleaned, the buffer member 15 retracts into the inner side of the wiping plate 62, and the disassembly / assembly component, i.e., the brush 62a, on the bottom surface of the wiping plate 62 is fixed to the cleaning disc 63. The surface to be cleaned is cleaned in this state. When the cleaning disc 63 is removed or replaced after cleaning, if the buffer member 15 is pressed towards the surface to be cleaned when the cleaning disc 63 is placed back on the surface to be cleaned, the buffer member 15 protrudes significantly due to the tapping cam mechanism 16. Therefore, as... Figure 12 As shown in (c), the cleaning blade 63 fixed to the brush 62a can be peeled off and removed.

[0041] Alternatively, instead of the tapping cam mechanism 15, a buffer member can be protruded when a button provided on the upper surface of the wiping plate is pressed, and the buffer member is returned to its initial position by pressing the buffer member against the surface being cleaned. This configuration is also included in the present invention.

[0042] Figure 13 (a) is a perspective view of the seventh embodiment, showing the suction port with the cleaning blade fixed thereon. Figure 13 (b) is a perspective view of the suction inlet of the seventh embodiment as seen from the bottom side. Figure 13 (c) is a bottom view showing the intake port of the seventh embodiment. Additionally, Figure 14 yes Figure 13 (a) is a BB cross-sectional view. The following description uses these figures to illustrate a seventh embodiment of the suction inlet of the electric vacuum cleaner of the present invention. In the seventh embodiment, the suction inlet 70 is configured such that suction channels 17a and 17b are formed near both ends of the suction nozzle 71 along its long side and towards both ends of the wiping plate 72 (left and right sides). A portion of these suction channels 17a and 17b communicates with suction holes 18a, 18b, 18c, and 18d formed on the bottom surface of the wiping plate 72. Therefore, when the electric vacuum cleaner is operated, a suction force is also generated at the suction holes 18a, 18b, 18c, and 18d, which can adsorb the cleaning blade 73.

[0043] Furthermore, the suction channels 17a and 17b can be formed at any position within the suction nozzle 71, and the suction holes 18a, 18b, 18c, and 18d only need to be formed at predetermined positions on the wiping plate 72 opposite the four corners of the cleaning blade 73. Alternatively, a brush can be added as a detachable component as shown in other embodiments. In this case, the cleaning blade 73 can be more securely fixed to the wiping plate 72 by utilizing the synergistic effect.

[0044] Figure 15 (a) is a perspective view showing the inlet of the eighth embodiment. Figure 15 (b) is a bottom view showing the inlet of the eighth embodiment. Figure 15 (c) is a side view of the suction port of the eighth embodiment with the cleaning blade fixed thereon. The eighth embodiment of the suction port of the electric vacuum cleaner of the present invention will be described below using these figures. The suction port 80 of the eighth embodiment is configured to include a rotating brush 19a, and brushes 82a, 82a serving as detachable parts are arranged in the suction port body 19b located behind the rotating brush 19a.

[0045] Therefore, as Figure 15 As shown in (c), the cleaning blade 83 can be mounted to cover the entire bottom surface of the suction port body 19b behind the rotating brush 19a. Alternatively, the suction port 80 of the eighth embodiment can also be constructed by attaching brushes 82a, 82a with adhesive surfaces to the bottom surface of a commercially available, conventional suction port body 19b. Industrial applicability

[0046] The suction port of the electric vacuum cleaner of the present invention can be used as a cleaning tool equipped with a wiping plate for wiping and cleaning the surface to be cleaned. Explanation of reference numerals in the attached figures:

[0047] 1, 41, 51, 71: Suction nozzle; 1a: Opening; 1b: Inner wall surface; 1c: Suction chamber; 1d: Suction port; 1e: Narrowing section; 2, 32, 42, 52, 62, 72: Wiping plate; 2a, 32a, 42a, 62a, 82a: Disassembly / assembly parts (brush); 2b: Bottom surface; 2c: Wiping plate body; 2d: First buffer component; 2e: Second buffer component; 2f: Bristles; 2g: Interruption section; 2h: Spatial section; 3, 33, 43, 53, 63, 73, 83: Cleaning plate; 4: Buffer plate; 5: Spring; 6, 36: Connection 7: Rotating tube; 8a: Cutout; 8b: Protrusion; 9: Plate; 10, 20, 30, 40, 50, 60, 70, 80: Suction inlet of electric vacuum cleaner; 11: Mounting component; 12: Operating lever; 13: Floor wiper; 14: Cutout section; 15: Buffer component; 16: Tapping cam mechanism; 16a, 16b: Spring component; 17a, 17b: Suction channel; 18a, 18b, 18c, 18d: Suction hole; 19a: Rotating brush; 19b: Suction inlet body; 22i: Protrusion; 22j: Rib; 22k: Flat part.

Claims

1. The suction inlet of an electric vacuum cleaner, characterized in that, The electric vacuum cleaner's suction inlet includes: a suction nozzle to draw in dust from the surface being cleaned; and a wiping plate to wipe and clean the surface. The suction nozzle has a generally rectangular opening formed on the bottom surface; A suction chamber is formed by a plurality of inner wall surfaces surrounding the opening; and a suction port is formed in the upper part of the suction chamber, such that the opening communicates with the main body of the electric vacuum cleaner. The wiping plate can be fixed to the bottom surface of the wiping plate via a detachable component, and the bottom surface is located near the opening of the suction nozzle. The suction nozzle has a narrowed portion formed near the approximate center of the long side of the opening, where the distance between the opposing inner wall surfaces of the suction chamber narrows.

2. The suction inlet of the electric vacuum cleaner according to claim 1, characterized in that, The height of the suction chamber from the opening to the upper surface is lower at the end than at approximately the center of the opening along its long side.

3. The suction inlet of the electric vacuum cleaner according to claim 1 or 2, characterized in that, In a cross-section of the suction chamber with the short side of the opening as the plane, the cross-sectional area at the end is smaller than the cross-sectional area at approximately the center of the opening with the long side as the plane.

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