JP2020000563A - Suction tool for vacuum cleaner and vacuum cleaner including the suction tool - Google Patents

Abstract

To provide a suction tool for a vacuum cleaner which reduces residual dusts caused between both end parts in a longitudinal direction of a suction tool body and both end parts in a longitudinal direction of a suction port of a vacuum cleaner.SOLUTION: A suction tool for a vacuum cleaner includes: a main suction port 25 formed on a lower surface side of a suction tool body 21; a discharge part 22 communicating to the main suction port 25 via a main air passage and arranged leeward; and a sub-suction port 26 formed on the lower surface side of the suction tool body 21, at least part of which being formed on an outside in a longitudinal direction relative to an end part in a longitudinal direction of the main suction port 25, and communicating to the discharge part 22 via a sub-air passage that is different from the main air passage.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a suction device of a vacuum cleaner, and more particularly, to a suction device having a plurality of suction ports and a vacuum cleaner having the suction device.

  The suction tool of the vacuum cleaner is provided with a suction port for sucking air containing dust on the lower surface side of the suction tool body facing the surface to be cleaned. However, the peripheral portion of the suction port is open due to a component constituting the design surface of the suction tool main body, or a component disposed on the outer periphery of the suction port, such as a holding component for holding a rotating brush accommodated in the suction tool main body. It is difficult to inhale dust because it is not. For this reason, especially when cleaning the wall, dust near the wall may not be sucked in.

  Therefore, in order to prevent the dust on the wall from being left behind, a pair of shaft supporting portions that support both sides of the rotating brush, a pair of sliding contact portions that cover the pair of shaft supporting portions and are in contact with the surface to be cleaned, and A suction port has been proposed in which a space is formed between a pair of driving wheels provided on the outside and a rotating brush, and a ventilation path is formed between the sliding brush and the entire width of the suction port main body. (For example, see Patent Document 1).

  In addition, a rotary brush rotatably provided in the suction chamber and arranged at the suction port, and a plurality of suction ports provided on the lower surface side of the suction tool main body in a direction intersecting with the axial direction of the rotary brush, so that There has been proposed a suction tool main body including an air passage portion communicating with a communication air passage at a position on a downstream side (for example, see Patent Document 2).

Japanese Patent No. 5135112 JP 2017-60574 A

  The suction device of the conventional vacuum cleaner described in Patent Literature 1 is provided with a pair of pivot portions that pivotally support both sides of the rotating brush, and a pair of sliding contact portions that cover the pair of pivot portions and contact the surface to be cleaned. Therefore, the surface to be cleaned can be wiped and cleaned, but dust on the lower surface of the sliding contact portion cannot be sucked. Furthermore, since a pair of drive wheels provided respectively on the outer side of the shaft support portion are provided, the distance from the side surface of the suction tool main body to the suction port having the rotating brush is long.

  The suction device of the conventional vacuum cleaner described in Patent Document 2 is provided with a suction port other than the suction port where the rotating brush is arranged, but the distance from the side surface of the suction tool body to each suction port is It is formed similarly.

  As described above, in the suction device of the conventional vacuum cleaner, the dust between the suction device body and the respective suction ports cannot be sucked in a certain width from the side surface of the suction device body, and the dust on the wall cannot be sufficiently removed. was there.

  Furthermore, in order to clean dust that is not sucked in near the wall, change the direction of the suction tool body, use accessories specially designed for cornering such as sash nozzles, or use cleaning tools other than vacuum cleaners Therefore, there is a problem that the user has trouble in cleaning the remaining dust.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and reduces dust remaining between both ends (left and right) of a suction tool main body of a vacuum cleaner and a suction port, and is easy to use. It is an object of the present invention to provide a suction tool and a vacuum cleaner provided with the suction tool.

  The suction tool of the vacuum cleaner according to the present invention communicates with the suction tool body, a main suction port formed on the lower surface side of the suction tool body, and the main suction port via a main air passage, and on the leeward side. The discharge portion to be arranged, formed on the lower surface side of the suction tool main body, at least a part is formed outside the longitudinal end of the main suction port in the longitudinal direction, and is different from the main air passage. And a sub-suction port communicating with the discharge section via a sub-airway.

  ADVANTAGE OF THE INVENTION According to the suction tool of the vacuum cleaner which concerns on this invention, the main suction port formed in the lower surface side of the suction tool main body, this main suction port communicates via a main air path, and the discharge arrange | positioned at the leeward side. Part, formed on the lower surface side of the suction tool main body, at least a part thereof is formed outside the longitudinal end of the main suction port in the longitudinal direction, and discharged through a sub-airway separate from the main airway. Since the auxiliary suction port communicating with the suction port is provided, it is possible to reduce dust remaining between both ends (left and right) of the suction tool main body of the vacuum cleaner and the suction port, and to provide an easy-to-use vacuum cleaner suction tool. Can be.

It is a perspective view which shows the vacuum cleaner in the state which connected the suction tool of the vacuum cleaner concerning Embodiment 1 of this invention to the vacuum cleaner main body. It is sectional drawing which looked at the vacuum cleaner main body of FIG. 1 from the side direction. (A) A plan view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention as viewed from above, and (b) a suction tool of the vacuum cleaner according to Embodiment 1 of the present invention as viewed from below. FIG. (A) A perspective view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention viewed obliquely from the upper front, and (b) the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention tilted obliquely rearward. It is the perspective view seen from. It is sectional drawing which looked at the AA cross section of FIG.3 (a) from the side surface direction. FIG. 6 is an enlarged view of a main part of a portion surrounded by a circle E in FIG. 5. It is sectional drawing which looked at the BB line cross section of FIG.3 (a) from the side surface direction. FIG. 8 is an enlarged view of a main part of a portion surrounded by a circle F in FIG. 7. FIG. 2 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, in which a joint pipe is removed and a first air path cover and a second air path cover are exploded upward. It is the perspective view which decomposed | disassembled the upper case of the suction tool of the vacuum cleaner which concerns on Embodiment 1 of this invention upward with the 1st air path cover and the 2nd air path cover. FIG. 3 is a plan view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, with the joint pipe, the first air path cover, and the second air path cover removed, as viewed from above. It is the top view which looked at the suction implement of the vacuum cleaner concerning Embodiment 2 of the present invention from the lower surface direction. FIG. 13 is a cross-sectional view of the suction tool of the vacuum cleaner according to Embodiment 3 of the present invention when viewed along the line CC shown in FIG. 12 from the rear surface direction. FIG. 14 is an enlarged view of a main part of a portion surrounded by an ellipse G in FIG. 13. FIG. 13 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 4 of the present invention, as viewed from obliquely rearward and upward. FIG. 13 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 4 of the present invention, as viewed from obliquely rearward and upward. FIG. 15 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 5 of the present invention, as viewed from obliquely rearward and upward.

Embodiment 1 FIG.
(Overall configuration)
FIG. 1 is a perspective view showing the vacuum cleaner in a state where the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention is connected to the vacuum cleaner. FIG. 2 is a cross-sectional view of the vacuum cleaner main body of FIG. 1 as viewed from a side. 1 and 2, a schematic configuration of the entire vacuum cleaner to which the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention is connected will be described.

  As shown in FIG. 1, a suction tool 1 of a vacuum cleaner according to Embodiment 1 of the present invention is connected to a vacuum cleaner main body 6 via an extension pipe 2, a grip portion 3, and a hose body 5, The vacuum cleaner 100 is configured as a whole.

  A connection port 7 for connecting the hose body 5 is provided on the front side of the vacuum cleaner main body 6. By connecting the hose body 5 to the connection port 7, the suction tool 1 connected to the hose body 5 via the extension pipe 2 and the grip part 3 is connected to the electric blower 10 housed in the vacuum cleaner main body 6 described later. With the generated suction wind, air containing dust can be sucked.

  A handle 8 is provided behind the upper surface of the vacuum cleaner main body 6. This is used when carrying the vacuum cleaner main body 6, and is made of, for example, a resin material. A dust collector 9 is detachably attached to the front side of the vacuum cleaner main body 6 so as to be inclined backward from the front.

  The dust collecting unit 9 is provided with a suction tool by suction air generated by driving an electric blower 10 housed in the electric vacuum cleaner main body 6 shown in FIG. 2 by an input from an operation unit 4 provided on the grip unit 3. This is for separating dust and air from the air containing dust sucked in from 1 to collect dust and collect the dust.

  Further, in addition to the electric blower 10, the electric cleaner 10 has a control board 11 for controlling the drive, output increase / decrease, etc. of the electric blower 10 based on an input from the operation unit 4, an electric blower 10, and the like. A cord reel (not shown) for accommodating a power cord for supplying the power is also accommodated.

  The hose body 5 whose one end is connected to the connection port 7 of the vacuum cleaner main body 6 is formed of a flexible soft tube like a bellows. The other end of the hose body 5 is connected to one end of the grip 3. The grip part 3 is for operating the movement of the suction tool 1 and for handling the vacuum cleaner main body 6, and is formed of, for example, a hard resin material.

  The operation unit 4 is provided on the grip unit 3 as described above. The operation unit 4 has a plurality of operation switches (not shown), and the control board 11 drives the electric blower 10 in response to an input from these operation switches. When the driven electric blower 10 generates suction air, it becomes possible to suck in air containing dust.

  The other end of the grip 3 is connected to one end of the extension tube 2. The extension pipe 2 has a telescopic structure in the axial direction of the pipe, and can be extended and used as needed when cleaning. It is made of material.

  The other end of the extension tube 2 is connected to the suction tool 1. Hereinafter, the configuration of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention will be described in detail with reference to FIGS. 3 to 10.

(Structure of suction tool)
FIG. 3A is a plan view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention as viewed from above, and FIG. 3B is a suction port of the vacuum cleaner according to Embodiment 1 of the present invention. It is the top view which looked at the tool from the lower surface direction. FIG. 4A is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention as viewed obliquely from the upper front, and FIG. 4B is a perspective view of the vacuum cleaner according to Embodiment 1 of the present invention. It is the perspective view which looked at the suction implement from back diagonally above. FIG. 5 is a cross-sectional view of the cross section taken along the line AA of FIG. FIG. 6 is an enlarged view of a main part of a portion surrounded by a circle E in FIG. FIG. 7 is a cross-sectional view of the cross section taken along line BB of FIG. FIG. 8 is an enlarged view of a main part of a portion surrounded by a circle F in FIG. FIG. 9 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, in which the joint pipe has been removed and the first air path cover and the second air path cover have been disassembled upward. FIG. 10 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, in which the upper case is exploded upward together with the first air path cover and the second air path cover. FIG. 11 is a plan view of the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, with the joint pipe, the first air path cover, and the second air path cover removed, as viewed from above. It is. In each of the drawings, the same portions or corresponding portions are denoted by the same reference numerals, and some description thereof may be omitted.

  As shown in FIGS. 3 to 5, the suction tool 1 is composed of a horizontally long suction tool body 21 and a joint pipe 22 in a T-letter alphabetical shape. The suction tool main body 21 includes, for example, a lower case 31, a left shaft support 31a and a right shaft support 31b formed of a hard resin material, an upper case 30 similarly formed of a hard resin material, and a hard resin material. And a first air passage cover 32a and a second air passage cover 32b which form a part of a second air passage, which are a pair of auxiliary air passages described later. Is configured. The upper case 30, the first air path cover 32a, and the second air path covers 32a, 32b are members constituting the upper surface of the suction tool main body 21. The left shaft support 31a and the right shaft support 31b are members for supporting both ends of the rotating brush 27 described later.

  For example, buffers 33, 33a, and 34b formed of a soft resin material are attached to the outer periphery of the contact portion between the lower case 31 and the upper case 30. The buffers 33, 34a, and 34b are protection units for preventing the wall and furniture from being damaged even when the suction tool 1 hits the wall or furniture during cleaning. The buffer 34a is a first protection unit, the buffer 34b is a second protection unit, and the buffers 34a and 34b may be collectively referred to as a protection unit 34. The buffer 34a (first protection unit) extends upward from the lower left opening 26a (first sub suction port) and is provided at a portion exposed to the outside of the suction tool main body 21. The buffer 34b (second protection portion) extends upward from the lower right opening 26b (second auxiliary suction port) and is provided at a portion exposed to the outside of the suction tool main body 21. As described above, since the protection portion is provided at a portion that is connected to the upper side from the sub-suction port and is exposed to the outside of the suction tool main body, when the outside of the sub-suction port collides with furniture or the like during cleaning, the sub-suction port is not closed. Damage can be suppressed. Further, since the protection portion is made of a soft material, it is possible to prevent the furniture and the like from being damaged when the outside of the sub suction port collides with the furniture and the like during cleaning. Furthermore, the protection part made of a soft material can absorb the impact due to the collision, so that the auxiliary suction port can be prevented from being damaged.

  A lower surface opening 25 (main suction port) is formed on the lower surface side of the suction tool main body 21 facing the floor surface or the like to be cleaned. The lower surface opening 25 is formed from the center in the longitudinal direction to both longitudinal directions. Further, on the lower surface side of the suction tool main body 21, with respect to the lower surface opening 25, the lower left opening 26a (first auxiliary suction opening) and the lower right opening 26b ( A second sub suction port) is provided. The lower left opening 26a and the lower right opening 26b may be collectively referred to as a sub suction port 26. The lower opening 25, the lower left opening 26a, and the lower right opening 26b are suction ports for sucking dust from a floor or the like. The lower left opening 26a and the lower right opening 26b may be arranged on the front side with respect to the lower opening 25.

  There is a space inside the lower surface opening 25, and a rotating brush 27 for removing dust from the surface to be cleaned is detachably mounted in the space. The rotating brush 27 obtains a rotating force by a motor 37 disposed on the lower case 31 on the rear side as viewed from the traveling direction side (front side) of the suction tool main body 21.

  First, the rotational force of the motor 37 is transmitted to a timing belt from a gear (not shown) press-fitted into the rotating shaft of the motor 37. The rotating force of the motor 37 transmitted to the timing belt is transmitted to the gear of the rotating brush 27 so that the rotating brush 27 rotates. By rotating the rotating brush 27 in this manner, dust can be scraped off from the surface to be cleaned, and the cleaning performance can be further improved.

  A switch 38 is provided on the lower surface side of the suction tool main body 21 so as to be able to protrude and retract from the lower case 31 of the suction tool main body 21. The switch 38 is for turning on and off the rotation of the motor 37 for rotating the rotating brush 27. When the suction tool main body 21 separates from the surface to be cleaned, the switch 38 protrudes from the lower surface of the suction tool main body 21, the motor 37 is turned off, the rotation of the rotary brush 27 is stopped, and the suction tool main body 21 contacts the cleaning target surface again. Then, the switch 38 is submerged in the lower case 31, the motor 37 is turned on, and the rotation of the rotating brush 27 is started. With such a configuration, when the suction tool main body 21 does not contact the surface to be cleaned, the rotating brush 27 does not rotate, so that wasteful power consumption can be suppressed. Further, since the user can be prevented from touching the rotating brush 27 during rotation, the usability is good.

  The rotating brush 27 is configured to be removable from the inside of the lower surface opening 25. When the engagement release lever 28 shown in FIG. 3A is rotated in one direction, the engagement between the rotating brush 27 and the suction tool main body 21 is released, and when the engagement release lever 28 is moved in the direction of the arrow E. Can be pulled out.

  By pulling out the rotating brush 27 from the suction tool main body 21, it becomes easy to remove entangled lint, hair, and the like. Further, the rotating brush 27 itself can be cleaned, and maintenance of the rotating brush becomes easy.

  Next, when attaching the rotary brush 27 to the suction tool main body 21, the rotary brush 27 is inserted in the direction opposite to the direction of the pulled-out arrow E, and rotated in the direction opposite to the direction in which the engagement release lever 28 has been disengaged. When moved, the rotating brush 27 is engaged with the suction tool main body 21 again.

  A pair of left and right wheels 24a and 24b is provided behind the lower surface opening 25 on the lower surface side of the suction tool main body 21 so that the surface to be cleaned can be smoothly moved (see FIG. 3B). . The wheels 24a and 24b are provided with slidability in the direction of the rotation axis extending in the left-right direction so as to cope with the movement of the suction tool 1 sliding on the floor surface during cleaning.

  An outer shell of the suction tool main body 21 is constituted by a lower case 31 constituting a lower surface side and an upper case 30 constituting an upper surface side. A lower case cover 40 is attached to the lower case 31 that forms the lower surface of the suction tool body 21. On the upper part of the lower case cover 40, the lower case cover upper part 41 which forms the lower side of the air path for carrying the air containing the sucked dust to the joint pipe 22 shown in FIG. The joint pipe 22 is a discharge unit that discharges air sucked from the lower opening 25, the lower left opening 26a, and the lower right opening 26b to the outside of the suction tool main body 21.

  The lower case cover 40 has a claw receiving recess 42 and one or more ribs 44, and the claw 43 provided on the lower case cover upper 41 engages with the claw receiving recess 42, so that the lower case cover upper 41 The lower case cover 40 and the lower case cover upper 41 are temporarily fixed by press-fitting the frame body 45 into the gap defined by the ribs 44. The temporarily fixed lower case cover 40 and the lower case cover upper 41 are assembled into the lower case 31 and fixed by screws (not shown).

  A flocking member 46 is attached to the lower case cover 40. The flocking member 46 includes a flocking portion that is a bundle of bristles and a flocking member base to which the root of the bundle of bristles is fixed. The flocked portion is formed by bundling, for example, flexible fibers of nylon resin.

  The flocking member 46 is attached to the rear side of the lower surface opening 25 (on the joint pipe 22 side). The flocking member 46 has a function of wiping the floor surface and catching the remaining dust, and is effective on a floor surface of a flooring or the like.

Further, there is also a function of making it difficult to suck unnecessary air from the rear side of the lower surface opening 25 and improving the suction performance of the lower surface opening 25. The reason that it is difficult to suck unnecessary air from the rear side is that the flocking member 46 attached to the lower surface opening 25 and the rear side of the rotating brush 27 is in contact with the floor surface, and the intrusion of air from the rear side is suppressed. That's what it means. In addition, it also has a function of preventing the lower case 31 made of a hard resin material from damaging the floor surface.

  The flocking member 46 is inserted into the groove 47 of the lower case cover 40 and is fixed using an adhesive. In the fixed state, the flocking member 46 projects from the lower case cover 40 toward the floor.

  Next, the air path in the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention will be described.

  The main air passage communicating from the lower surface opening 25 (main suction port) to the joint pipe 22 (discharge portion) is formed by the lower case 31 on the upper side and the side surface of the main air passage and by the lower case cover upper 41 on the lower side. . As shown by the arrows in FIG. 5, the main air path is used to remove air including dust sucked from the surface to be cleaned and dust swept up by the rotating brush 27 from the lower surface opening 25 to the space behind the partition wall 51. (Suction part 52) and it carries to the joint pipe 22.

  As shown in FIG. 7, the lower case 31, the buffer 34 a (first protection unit), and the buffer 34 b (second protection unit) respectively correspond to the lower surface left opening 26 a (first sub-unit) with respect to the surface to be cleaned. An inlet and a first sub-airway inlet) and a lower left opening 26b (a second sub-inlet and a second sub-airway inlet) are formed. Further, the first air passage cover 32a and the second air passage cover 32b formed on the upper surface of the upper case 30 and the first air passage cover 32a and the second air passage cover 32b respectively have a first sub air passage and a second air passage separate from the main air passage. Are configured. With this configuration, it is possible to reduce the height of the sub air passage protruding from the upper surface of the upper case 30 as compared with the case where the concave portion is not formed, and to reduce the size of the suction tool main body 21.

  Further, holes 30c and 30d are formed on the upper surface of the upper case 30 toward the outlet of the first sub air passage and the outlet of the second sub air passage, respectively. A first sub air passage outlet 31c and a second sub air passage outlet 31d are formed at 31.

  As shown in FIGS. 7 and 8, similarly to the main air path, the first sub air path and the second sub air path, which are sub air paths different from the main air path, are sucked from the surface to be cleaned. Air containing dust is conveyed from the lower left opening 26a and the lower right opening 26b to the joint pipe 22 through the space (the suction part 52) behind the partition wall 51.

  As described above, the main air path, the first sub air path, and the second sub air path are configured to merge at the suction portion 52.

  Next, the lower left opening 26a (first sub intake, first sub air passage entrance) and the lower right opening 26b (second sub intake, second sub air entrance) will be described.

  The lower left opening 26a (first sub intake, first sub air inlet) and the lower right opening 26b (second sub intake, second sub air inlet) are connected to the lower opening 25 (main inlet). ), Is disposed on one side (front side or rear side) of the main suction port 25 in the short direction.

  As shown in FIG. 3B, in the longitudinal direction of the suction tool body 21, the lower surface opening 25 (main suction port) has a distance F1 and a distance F2 from both ends of the suction tool body 21, respectively. With the distance F1 and the distance F2, dust may be left behind.

  Therefore, as shown in FIG. 3B, the lower left opening 26a (the first sub suction port) is located at the lower surface opening 25 (the main suction port) located substantially at the center in the longitudinal direction of the suction tool main body 21, and The lower right opening 26b (second auxiliary suction port) has at least a part of the opening behind the lower opening 25 (main suction port) and near both ends in the longitudinal direction of the suction tool body 21. It is provided in a region outside the both ends in the longitudinal direction. That is, in the example of FIG. 3B, in the longitudinal direction of the lower surface opening 25, the lateral width of the lower surface left opening 26a (first auxiliary suction port) is longer than the distance F1 and the lower surface left opening 26a (first auxiliary opening). The suction port is provided so as to include at least the area of the distance F1. On the other hand, the lateral width of the lower right opening 26b (the second sub suction port) is equal to the distance F2. As described above, in the longitudinal direction of the lower surface opening 25, the width of the lower surface left opening 26a (first sub-suction port) and the lower surface right opening 26b (second sub-suction port) are equal to the distances F1 and F2, or Largely formed.

  As described above, since the sub-suction port is disposed on one side in the short direction of the main suction port, that is, on the front side or the rear side with respect to the main suction port, the main suction port and the sub-suction port overlap in plan view. Instead, the suction performance of dust from each suction port can be independently designed, and the degree of freedom in design is increased.

  Further, since a plurality of sub-suction ports are formed on both sides in the longitudinal direction of the main suction port, for example, even when the wall is on the right side and the left side with respect to the forward direction of the suction tool, the direction of the suction tool is changed. Without changing, it is possible to reduce the dust left on the wall.

  The widths G1 and G2 of the lower surface left opening 26a and the lower surface right opening 26b in the transverse direction of the suction tool main body 21 in the direction intersecting with the rotation axis of the rotating brush 27 are preferably 2.0 mm or more, at which rice grains can be sucked. .

  Next, the buffer 34a (first protection unit) and the buffer 34b (second protection unit), which are part of the components forming the first sub suction port 26a and the second sub suction port 26a, will be described. .

  The buffer 34a and the buffer 34b are used to prevent the suction tool 1 from being damaged even when the suction tool 1 hits a wall or furniture during cleaning, and at the same time, the lower left opening 26a (first sub suction port). It is also for adjusting the wind power of the suction wind from the lower right opening 26b (second sub suction port).

  FIG. 8 shows the flow of air containing dust sucked from the lower left opening 26a (first sub-suction port) and the lower right opening 26b (second sub-suction port) to facilitate the suction. As described above, the C surface 55 is provided at the end of the buffer 34a (first protection unit) and the end of the buffer 34b (second protection unit) facing the surface to be cleaned.

  Since the lower end of the protection portion is exposed to the outside at the C-plane, suction is performed through the lower left opening 26a (first sub suction port) and the lower right opening 26b (second sub suction port). The air flow of the dust-containing air is rectified and the air is easily sucked. In addition, when the area of the lower end of the sub-suction port is reduced and the surface to be cleaned has irregularities, the protection portion can easily get over the convex portion. Then, there is an effect that the operation resistance of the suction tool is reduced.

  Further, a distance D is provided between the lower ends of the buffers 34a and 34b and the lower end of the lower case 31 facing the inside of the suction tool main body 21 of the buffer 34, as shown in FIG. By adopting an easy configuration, when the user reciprocates the suction tool main body 1, the operation resistance is reduced.

Then, the distance C between the lower end of the buffer 34a (first protection unit) and the lower end of the buffer 34b (second protection unit) and the surface to be cleaned shown in FIG. 8 is 1.0 mm to 2.0 mm. Is set in the range. The optimum distance C changes depending on the opening area and shape of the vacuum cleaner main body 6, the electric blower 10, the suction tool main body 21, the lower left opening 26a, and the lower right opening 26b.

  Next, from the lower left opening 26a (first sub-suction port, first sub-airway entrance) and the lower right opening 26b (second sub-suction port, second sub-airway entrance), respectively, the first The relationship between the sub air passage outlet and the second sub air passage outlet will be described.

Lower left opening 26a (first sub intake, first sub air passage entrance) and lower right opening 26b (second sub intake, second sub air passage entrance) and lower case 31 are formed. The relationship between the areas of the first sub air passage outlet and the second sub air passage outlet has the following relationship.
The area F1 × G1 of the lower left opening 26a (the first sub-suction port, the first sub-airway entrance) is determined by the cross-sectional area of an arbitrary position of the first sub-airway and the exit of the first sub-airway. It is smaller than the area.
The area F2 × G2 of the lower right opening 26b (second sub-suction port, second sub-airway inlet) is the cross-sectional area of an arbitrary position of the second sub-airway and the area of the second sub-airway outlet It is as follows.

  As described above, since the cross-sectional area of the sub air passage is equal to or larger than the entrance area of the sub air inlet, dust sucked from the sub air inlet can be prevented from being clogged in the sub air passage or at the outlet, and the suction performance can be maintained.

  In addition, if the above-described relationship of the cross-sectional areas is maintained, the cross-sectional shapes of the first sub-airway and the second sub-airway may be different from each other, or may be left-right asymmetric.

  Further, the first air passage cover 32a and the second air passage cover 32b constituting the first sub air passage and the second sub air passage may be configured to be removable. As described above, the clogging of dust in the first sub-airway and the second sub-airway can be suppressed. However, when the dust is clogged, the first airway cover 32a or the second airway cover may be used. By removing the 32b from the upper surface of the suction tool main body 21, the clogged dust can be removed. In addition, the cleaning of the inside of the sub air passage becomes easy, and the maintainability is improved.

  In the first embodiment of the present invention, as shown in FIG. 7, the front pawl 61a and the rear pawl 61c are provided on the second air path cover 32a, and the front pawl is similarly provided on the second air path cover 32b. 61b and a rear claw 61d are provided.

  The upper case 30 is provided with a left front nail receiving portion 62a and a left rear nail receiving portion 62c, and similarly, a right front nail receiving portion 62b and a right rear nail receiving portion 62d are provided.

  First, the front claw 61a of the first air path cover 32a is hooked on the left front claw receiving portion 62a of the upper case 30, and then the rear claw 61c of the first air path cover 32a is caught by the left rear claw receiver of the upper case 30. Similarly, the front pawl 61b of the second air path cover 32b is hooked on the left front pawl receiving part 62b of the upper case 30, and then the rear pawl 61d of the first air path cover 32a is put on the upper case 30. Is fitted to the left rear claw receiving portion 62d.

  Therefore, by removing the claws, the first air path cover 32a and the second air path cover 32b can be removed from the case 30, and the second air path and the third air path can be cleaned.

  As described above, according to the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention, the air including dust that has not been sucked from the surface to be cleaned via the main suction port is removed from first suction port. By providing the second sub suction port, suction can be performed, and dust on the surface to be cleaned can be removed in the longitudinal direction of the lower surface opening 25 (main suction port), that is, in the entire longitudinal direction of the suction tool body 21. . Therefore, the removal of dust on the surface to be cleaned can be suppressed, and an easy-to-use vacuum cleaner can be obtained.

  In addition, the first sub-airway and the second sub-airway are configured such that the first airway cover 32a and the second airway cover 32b are detachable from the upper case 30 so that the first sub-airway and the second airway cover 32b can be removed. The air path and the second sub air path can be easily cleaned.

  Thus, the suction device of the vacuum cleaner according to Embodiment 1 and the vacuum cleaner using the suction device include a suction device main body, a main suction port formed on the lower surface side of the suction device main body, and a main suction port. The outlet communicates with the mouth via the main air passage, and is formed on the lower surface side of the suction tool main body, and is formed at the lower side of the suction tool main body, at least a part of which is longer than the longitudinal end of the main suction port. A secondary suction port formed outside and communicating with the discharge portion via a secondary air path separate from the main air path, so that both ends (left and right) of the suction tool main body of the vacuum cleaner and the main suction port are provided. During the period can be reduced.

  In addition, since the sub-suction port is arranged on one side of the main suction port in the short direction of the main suction port, that is, on the front side or the rear side, the main suction port and the sub-suction port do not overlap in plan view. In addition, the suction performance of dust from each suction port can be designed independently, and the degree of freedom in design is increased.

  Further, since a plurality of sub-suction ports are formed on both sides in the longitudinal direction of the main suction port, for example, even when the wall is on the right side and the left side with respect to the forward direction of the suction tool, the direction of the suction tool is changed. Without changing, it is possible to reduce the dust left on the wall.

  Further, since the cross-sectional area of the sub air passage is equal to or larger than the entrance area of the sub air inlet, it is possible to suppress dust sucked from the sub air inlet from being clogged in the sub air passage.

  In addition, since the sub air passage is constituted by the upper surface of the suction tool main body and the air path cover covering the upper surface, there is no need to provide a sub air passage in the suction tool main body, and the space for arranging the sub air passage can be selected. It becomes easy and the degree of freedom of design increases.

  In addition, since the air path cover is configured to be detachable from the upper surface of the suction tool main body, even if dust is clogged in the sub air path, the air path cover can be removed to easily remove the clogged dust. Further, the cleaning of the sub air passage is facilitated, and the maintainability is improved.

  In addition, since the protection part is provided at the part that is connected to the upper part from the sub-suction port and is exposed to the outside of the suction tool main body, if the outside of the sub-suction port collides with furniture etc. during cleaning, damage to the sub-suction port is prevented. Can be suppressed.

  In addition, since the lower end of the protection portion, which is exposed to the outside, is formed by the C-plane, dust sucked from the lower left opening 26a (first sub-suction port) and the lower right opening 26b (second sub-suction port). Rectifies the airflow of the air containing air, making it easier to inhale. Further, the area of the lower end of the sub suction port is reduced, and the operation resistance of the suction tool is reduced.

  Further, since the protection portion is made of a soft material, it is possible to prevent the furniture and the like from being damaged when the outside of the sub suction port collides with the furniture and the like during cleaning. Furthermore, the protection part made of a soft material can absorb the impact due to the collision, so that the auxiliary suction port can be prevented from being damaged.

Embodiment 2 FIG.
The vacuum cleaner according to Embodiment 2 of the present invention is different from the vacuum cleaner according to Embodiment 1 of the present invention in a partial configuration of the suction tool. The configuration other than the suction tool is the same as the configuration of the vacuum cleaner according to Embodiment 1 of the present invention. Therefore, only the points different from the vacuum cleaner according to Embodiment 1 of the present invention will be described here, and the other description will be omitted.
FIG. 12 is a plan view of the suction tool of the vacuum cleaner according to Embodiment 2 of the present invention when viewed from the lower surface direction.

  The difference between the vacuum cleaner according to Embodiment 2 of the present invention and the vacuum cleaner according to Embodiment 1 of the present invention is that, as shown in FIG. 12, the lower left opening 26a (first sub suction port), That is, a large-sized dust intrusion prevention member 63 is provided in each of the lower right opening 26b (the second sub suction port). As the bulky dust intrusion prevention member 63, for example, a first grid 63a provided in the lower left opening 26a (first sub suction port) and a second grid provided in the lower left opening 26b (second sub suction port). 63b. A plurality of each lattice may be provided. The position where the bulky dust intrusion prevention member 63 is provided is not limited to the sub-suction port 26 but may be provided near the downstream side of the sub-suction port 26.

  As described above, the suction device of the vacuum cleaner according to Embodiment 2 and the vacuum cleaner using the suction device include the auxiliary suction port or the bulky dust intrusion prevention member disposed near the downstream side of the auxiliary suction port. In addition, it is possible to suppress the dust sucked from the sub suction port from being clogged in the sub air passage. In addition, the cross-sectional area of the sub-suction port and the cross-sectional area of the sub-airway can be set freely, and the degree of freedom in designing the airway increases.

Embodiment 3 FIG.
The suction device of the vacuum cleaner according to Embodiment 3 of the present invention has a partially different configuration from the suction device of the vacuum cleaner according to Embodiment 1 of the present invention. Here, the different configuration will be described. The other description is omitted.
FIG. 13 is a cross-sectional view of the suction tool of the vacuum cleaner according to Embodiment 3 of the present invention when viewed along the line CC shown in FIG. 12 from the rear surface direction. FIG. 14 is an enlarged view of a main part of a portion surrounded by an ellipse G in FIG.

  The suction tool of the vacuum cleaner according to Embodiment 3 of the present invention is different from the suction tool of the vacuum cleaner according to Embodiment 1 of the present invention in that the first air path cover 32a and the second air path cover 32b are different. The second air path and the third air path were formed by bonding or welding to the case 30 to stop.

  Therefore, as shown in FIG. 14, compared with the fitting of the claws (61a, 61b, 61c, 61d) and the claw receiving portions (62a, 62d, 62c, 62d) described in Embodiment 1 of the present invention. The sealing performance of the second and third air paths is improved.

Therefore, the vacuum cleaner according to Embodiment 3 of the present invention can be expected to improve suction performance from the surface to be cleaned.

Embodiment 4 FIG.
The suction tool of the vacuum cleaner according to Embodiment 4 of the present invention differs from Embodiment 1 in that a groove or a slit extending upward from a lower end is formed in a buffer serving as a protection portion.
FIG. 15 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 4 of the present invention, as viewed from obliquely rearward and above. FIG. 16 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 4 of the present invention, as viewed from obliquely above the rear of the suction tool.

  As shown in FIG. 15, a slit 70 extending upward from the lower end is formed on the rear surface of the buffer (first protection portion) and the rear surface of the buffer 34b (second protection portion). FIG. 15 shows an example in which the number of the slits 70 is two. However, the number of slits 70 is not limited to this, and may be one or three or more.

  As shown in FIG. 16, grooves 71 extending upward from the lower ends are formed on the side surfaces of the buffer (first protection unit) and the buffer (second protection unit) 34b, respectively. FIG. 16 shows an example in which the number of the grooves 71 is one.

  As described above, since the groove extending upward from the lower end is formed on the side surface of the protective portion, dust on the wall can be efficiently sucked. In addition, since the protective part has a slit extending upward from the lower end, the protective part is easily elastically deformed.If the outside of the sub suction port collides with furniture etc. during cleaning, the impact due to the collision is elastically deformed. The easy protection part can be absorbed, and damage to the sub suction port can be suppressed. Further, the operation resistance when the suction tool is retracted can be reduced.

Embodiment 5 FIG.
The suction device of the vacuum cleaner according to Embodiment 5 of the present invention is different from Embodiment 4 in that a roller 80 is provided in a buffer serving as a protection unit.
FIG. 17 is a perspective view of the suction tool of the vacuum cleaner according to Embodiment 5 of the present invention, as viewed from obliquely rearward and above.

  As shown in FIG. 17, a wheel 80 is provided in each of the buffer (first protection unit) and the buffer 34b (second protection unit). FIG. 17 shows an example in which one wheel 80 is provided. However, the present invention is not limited to this, and a plurality of wheels 80 may be provided.

  As described above, since the wheel is provided on the protection portion, the operation resistance can be reduced more than the slit described in the fourth embodiment. Further, the height of the bottom surface of the suction tool main body from the surface to be cleaned can be further stabilized, and the degree of vacuum at the suction port is stabilized.

  In addition, you may comprise the suction tool of the vacuum cleaner which concerns on Embodiment 1 to Embodiment 5 suitably combining.

  DESCRIPTION OF SYMBOLS 1 Suction tool, 2 extension pipes, 3 gripping parts, 4 operation parts, 5 hose bodies, 6 vacuum cleaner main body, 7 connection port, 8 handle, 9 dust collecting section, 10 electric blower, 11 control board, 21 suction tool main body , 22 joint pipe (discharge part), 24a wheel, 24b wheel, 25 bottom opening (main suction port), 26 sub suction port, 26a bottom left opening (first sub suction port), 26b bottom right opening (second suction port) Sub-suction port), 27 rotating brush, 28 disengagement lever, 30 upper case, 30a recess, 30b recess, 30c hole, 30d hole, 31 lower case, 31a left shaft support, 31b right shaft support, 31c first secondary wind Road outlet, 31d second sub-airway outlet, 32a first airway cover, 32b second airway cover, 33 buffer, 34 protection part, 34a buffer (first protection part), 34b buffer (first , 37 motor, 38 switch, 40 lower case cover, 41 lower case cover upper, 42 nail receiving recess, 43 nail, 44 rib, 45 lower case cover upper 41 frame, 46 flocking member, 47 lower case Groove of cover 40, 50 rotating brush chamber, 51 partition wall, 52 suction part, 55 C surface, 61a front claw on first air path cover 32a, 61b front claw on third air path cover 32b, 61c after second air path cover 32a Side claw, 61d Rear claw on the third air path cover 32b, 62a Upper case 30 left front claw receiver, 62b Upper case 30 right front claw receiver, 62c Upper case 30 left rear claw receiver, 62d Upper case 30 right rear claw Receiving member, 63 bulky intrusion prevention member, 63a first grid, 63b second grid, 70 slits, 71 grooves, 80 wheels, 100 electricity Removal machine.

Claims (14)

The suction tool body,
A main suction port formed on the lower surface side of the suction tool main body,
A discharge unit that communicates with the main suction port through a main air passage and is arranged on a leeward side;
It is formed on the lower surface side of the suction tool main body, at least a part is formed outside the longitudinal end of the main suction port in the longitudinal direction, and the main air passage is through a sub air passage separate from the main air passage. A sub-suction port communicating with the discharge section,
Vacuum cleaner suction device equipped with.   The suction tool of a vacuum cleaner according to claim 1, wherein the sub suction port is disposed on one side of the main suction port in a short direction with respect to the main suction port.   The suction tool for a vacuum cleaner according to claim 1, wherein a plurality of the sub suction ports are formed on both sides in a longitudinal direction of the main suction port.   The suction tool of a vacuum cleaner according to any one of claims 1 to 3, wherein a cross-sectional area of the sub air passage is equal to or larger than an entrance area of the sub suction port.   The suction tool for a vacuum cleaner according to any one of claims 1 to 4, wherein a bulky dust intrusion prevention member is disposed in the vicinity of the sub suction port or a downstream side of the sub suction port.   The suction device of a vacuum cleaner according to any one of claims 1 to 5, wherein the sub-airway includes an upper surface of the suction device main body and an air channel cover that covers the upper surface.   The suction tool of a vacuum cleaner according to claim 6, wherein the air path cover is configured to be detachable from an upper surface of the suction tool body.   The suction tool of a vacuum cleaner according to any one of claims 1 to 6, wherein a protection portion is provided at a portion that extends upward from the sub suction port and that is exposed to the outside of the suction tool body.   The suction tool of a vacuum cleaner according to claim 8, wherein the lower end of the protection unit is formed with a side exposed to the outside by a C-plane.   The suction device of a vacuum cleaner according to claim 8, wherein the protection portion is made of a soft material.   The suction tool according to claim 8, wherein a groove or a slit extending upward from a lower end is formed in the protection portion.   The suction tool according to claim 8, wherein a wheel is provided on the protection part. A rotating brush,
A rotating brush chamber containing the rotating brush,
Further comprising a partition wall on the leeward side of the rotating brush chamber,
The suction tool of a vacuum cleaner according to any one of claims 1 to 12, wherein the main suction port and the sub suction port communicate with the discharge section on a leeward side of the partition wall. A suction device for a vacuum cleaner according to any one of claims 1 to 13,
A vacuum cleaner main body including: an electric blower that generates a suction wind; and a dust collection unit that collects dust sucked through a suction tool of the vacuum cleaner by the suction wind generated by the electric blower. Equipped vacuum cleaner.

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