JP2017124129A - Crevice nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crevice nozzle that is easy to move in a crevice and is easy to suck dust.SOLUTION: A cylindrical crevice nozzle 1 has an opened leading end, where a leading-end suction port 3 includes a pair of projections 5 and 5 projecting in the length direction, and a pair of recesses 6 and 6 provided between the projections 5 and 5. Consequently, leading ends of the projections 5 and 5 come into partial contact with a bottom surface 102 of a crevice 101 as a suction surface so as to facilitate movement of the crevice nozzle 1 along the bottom surface 102 and suck peripheral outside air from the recesses 6 and 6 regardless of an angle between the crevice nozzle 1 and the bottom surface 102, thereby securing the suction force. Further, edges 5F and 5F of the projections 5 and 5 project into an arc-like shape when being viewed from a direction where the projections 5 and 5 are overlapped, so that, regardless of an inclination direction. This configuration, whichever direction the crevice nozzle 1 is moved along the bottom surface 102, can reduce partial abrasion and smoothly change an angle of the crevice nozzle 1 with respect to the bottom surface 102.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a gap nozzle used in a vacuum cleaner.

  Conventionally, as this type, there is an electric vacuum cleaner provided with a vacuum cleaner body, a connection hose, a handle part, an extension pipe, and a suction nozzle, and provided with a gap nozzle as an accessory (for example, Patent Document 1). In a vacuum cleaner, dust can be sucked by inserting a gap nozzle into a narrow and deep groove.

JP 2013-248079 A

  Since the suction nozzle at the tip of the gap nozzle is formed in an oblique straight line, when the suction port is aligned with the bottom of the groove, the suction port is blocked by the bottom, and dust cannot be sucked in well. It was difficult to move. Therefore, even if an attempt is made to move the base end side of the suction port against the bottom of the groove while floating the base end side of the suction port from the bottom, there is a possibility that the suction force may be reduced if the base end side is lifted too much. In addition, the gap nozzle cannot always be moved while maintaining the angle with the groove, and the angle of the gap nozzle may change during movement, which may cause uneven suction in the groove. there were. Furthermore, there is a concern that the tip of the suction port is partially worn during movement, or the bottom of the groove is damaged by sliding of the tip.

  An object of the present invention is to solve the above problems and to provide a gap nozzle that can easily move in the gap and suck dust.

  The gap nozzle according to claim 1 of the present invention is a cylindrical gap nozzle having an open tip, wherein the opening at the tip has a pair of protrusions protruding in the length direction, and the pair of protrusions. And a pair of recessed portions provided.

  The gap nozzle according to claim 2 of the present invention is characterized in that, in claim 1, the pair of convex portions are plane-symmetric and the pair of concave portions are plane-symmetric.

  The gap nozzle according to claim 3 of the present invention is the gap nozzle according to claim 1 or 2, wherein the edges of the pair of convex portions are convex toward the tip side when viewed from the direction in which the pair of convex portions overlap each other. It is characterized by a curved shape.

  Furthermore, the gap nozzle according to claim 4 of the present invention is the gap nozzle according to claim 3, wherein the edges of the pair of protrusions protrude in an arc shape when viewed from the direction in which the pair of protrusions overlap. Features.

  The gap nozzle according to claim 1 of the present invention is configured as described above, so that the tip of the convex portion partially hits the suction surface such as the bottom of the gap, so that it depends on the angle between the gap nozzle and the suction surface. In addition, since ambient ambient air can be sucked from the recess, suction force can be secured and movement along the suction surface is facilitated.

  In addition, by making the convex part and the concave part plane symmetrical, even when the gap nozzle is moved in the length direction of the suction surface, even if the inclination of the gap nozzle with respect to the suction surface is reversed, the absolute value of the inclination angle Since the inflow area of the outside air into the gap nozzle does not change, it is possible not only to satisfactorily suck the dust on the suction surface but also to easily move the gap nozzle in both directions.

  In addition, since the edge of the convex part is a convex curve, when the gap nozzle is moved along the suction surface, partial wear is reduced, and the direction of the gap nozzle with respect to the suction surface can be changed smoothly. it can.

  Furthermore, since the edges of the pair of convex portions protrude in an arc shape, partial wear is reduced regardless of the direction of the left and right, regardless of which direction the gap nozzle is moved along the suction surface. In addition to being able to smoothly change the angle of the gap nozzle with respect to the suction surface, the area of inflow of outside air into the suction port in the process of changing the inclination of the gap nozzle hardly changes, so the dust on the suction surface can be sucked well. can do.

It is a side view which shows Example 1 of this invention. FIG. It is the front view which expanded the front end side same as the above. FIG. It is a side view explaining a use condition same as the above. It is the front view which expanded the front end side which shows Example 2 of this invention. It is the side view to which the front end side which shows Example 3 of this invention was expanded. It is the side view to which the front end side which shows Example 4 of this invention was expanded. It is the side view to which the front end side which shows Example 5 of this invention was expanded.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  Hereinafter, Example 1 of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a gap nozzle of the present invention. The gap nozzle 1 is made of a synthetic resin and includes a cylindrical nozzle body 2. A suction port 3 serving as an opening is provided at the tip of the nozzle body 2 to open the tip. The proximal end is open.

  The suction port 3 at the tip of the nozzle body 2 includes a pair of convex portions 5 and 5 projecting in the length direction of the nozzle body 2 and a pair of concave portions 6 provided between the pair of convex portions 5 and 5. 6. In other words, the pair of convex portions 5 and 5 are provided between the pair of concave portions 6 and 6.

  The pair of convex portions 5 and 5 have the same shape, and the pair of concave portions 6 and 6 have the same shape. The edges 5F and 5F of the pair of convex portions 5 and 5 are symmetrical with respect to the first surface including the central axis Z of the nozzle body 2, and the edges 6F and 6F of the pair of concave portions 6 and 6 are , Which is plane symmetric with respect to the second plane including the central axis Z. This is because the edges 5F and 5F of the pair of convex portions 5 and 5 are symmetrical with respect to the second surface including the central axis Z of the nozzle body 2, and the edges 6F and 6F of the pair of concave portions 6 and 6 are provided. Is also symmetrical with respect to the first plane including the central axis Z. The first surface is a virtual surface defined in the front-rear direction, and extends in the line-of-sight direction in FIG. The second surface is a virtual surface defined in the left-right direction, and extends in the line-of-sight direction in FIG. That is, the first surface and the second surface are orthogonal to each other.

  As shown in FIG. 1, the edges 5 </ b> F and 5 </ b> F of the pair of protrusions 5 and 5 protrude in an arc shape when viewed from the direction in which the pair of protrusions 5 and 5 overlap each other. As described above, the edges 5F and 5F of the pair of convex portions 5 and 5 are formed in a curved shape that is convex toward the distal end side when viewed from the direction in which the pair of convex portions 5 and 5 overlap each other. In this example, the edges 5F and 5F are formed in a semicircular shape.

  A pair of notches 7 and 7 serving as air inlets are formed at the center in the left-right direction of the recesses 6 and 6 of the nozzle body 2. In this example, the notches 7 are formed long in the length direction of the nozzle body 2. The notches 7 and 7 are respectively formed continuously from the pair of recesses 6 and 6, but the notches 7 and 7 do not constitute the recesses 6 and 6. Therefore, for example, the pair of recesses 6 and 6 are plane symmetric, but the pair of notches 7 and 7 may not be plane symmetric. The direction in which the pair of convex portions 5 and 5 are overlapped with each other is orthogonal to the first surface including the central axis Z of the nozzle body 2.

  The nozzle body 2 is connected to the distal end of an extension pipe 11, and the base end of the extension pipe 11 is detachably connected to a suction port (not shown) of a cleaner. The extension tube 11 includes a distal end portion 12 and a proximal end portion 13. A rotation connecting portion 14 is provided at the tip of the tip end portion 12, and the nozzle body 2 is provided to be rotatable about the central axis Z by the rotation connecting portion 14. Further, a rotating portion 15 is provided between the distal end portion 12 and the proximal end portion 13 of the extension tube 11, and the proximal end portion 13 is centered around a diametrical connecting shaft 16 provided in the rotating portion 15. Thus, the distal end portion 12 can be rotated at an angle, and the orientation of the distal end portion 12 relative to the proximal end portion 13 can be changed.

  A connecting portion 17 is provided at the proximal end of the extension pipe 11, and a bendable hose (not shown) is connected to the connecting portion 17, and this hose is inserted into and removed from a suction port (not shown) of the vacuum cleaner. By doing so, the clearance nozzle 1 and the extension pipe 11 are detachably connected to the suction port of the cleaner.

  Next, the operation of this embodiment will be described. The extension pipe 11 and the gap nozzle 1 are connected to the suction port of the cleaner through a hose, the switch of the cleaner is turned on, and suction is performed from the suction port 3 of the gap nozzle 1. The tip of the gap nozzle 1 is inserted into the gap 101, and the tip of the gap nozzle 1 is applied to the bottom surface 102, which is the suction surface of the gap 101. In this way, the tip of the gap nozzle 1 partially abuts against the bottom surface 102, and the concave portions 6 and 6 on both sides are not blocked by the bottom surface 102, so that dust accumulated on the bottom surface 102 can be sucked together with the outside air. . Further, when the gap nozzle 1 is moved, only the tip thereof is slidably in contact with the bottom surface 102, and the edge 5F of the tip forms an arc shape. Therefore, regardless of the angle formed between the bottom surface 102 and the gap nozzle 1, Since the contact area between the bottom surface 102 and the tip of the gap nozzle 1 can be reduced, the gap nozzle 1 can be smoothly moved while the tip is applied to the bottom surface 102. Further, as shown in FIG. 5, even if the nozzle body 2 is swung so that the base end side becomes the center side, and the inclination of the gap nozzle 1 with respect to the bottom surface 102 is reversed, the inclination angle of the gap nozzle 1 is changed. If the absolute value is the same, the inflow area of the outside air into the suction port 3 of the gap nozzle 1 does not change. And since the inflow area of the outside air into the suction port 3 in the process of changing the inclination of the gap nozzle 1 is hardly changed, the dust on the bottom surface 102 can be satisfactorily sucked.

  Further, as shown in FIG. 5, since the edge 5 </ b> F at the tip is a convex curve, the inclination of the gap nozzle 1 can be changed favorably. That is, when the gap nozzle 1 is moved in the gap 101, even if the inclination of the gap nozzle 1 changes, the contact point between the edge 5F of the tip of the gap nozzle 1 and the bottom surface 102 moves. It is difficult for the tip of the wire to be partially worn. Furthermore, when the edge 5F of the convex portion 5 of the gap nozzle 1 is arcuate, the bottom surface 102, which is the suction surface, can be moved smoothly in both directions in the longitudinal direction.

  Furthermore, even if paper or the like is sucked into the suction port 3 and closed, it is possible to continue sucking outside air from the notches 7 and 7, so that an excessive load is not applied to the motor of the vacuum cleaner, Further, paper or the like can be removed from the suction port 3 without stopping the vacuum cleaner.

  As described above, in the present embodiment, in the cylindrical gap nozzle 1 with the open end, the suction port 3 serving as the opening at the end has the pair of convex portions 5 and 5 protruding in the length direction and the pair of convex portions. By having the pair of concave portions 6 and 6 provided between the portions 5 and 5, the tips of the convex portions 5 and 5 partially hit the bottom surface 102 which is the suction surface of the gap 101. Regardless of the angle, the ambient air can be sucked from the recesses 6 and 6, so that the suction force can be ensured and the movement along the bottom surface 102 is facilitated.

  Further, since the pair of convex portions 5 and 5 are plane symmetric and the pair of concave portions 6 and 6 are plane symmetric, the bottom surface 102 is moved when the gap nozzle 1 is moved in the length direction of the bottom surface 102 which is a suction surface. Even if the inclination of the gap nozzle 1 with respect to the reverse is reversed, the inflow area of the outside air into the gap nozzle 1 does not change, so that not only the dust on the bottom surface 102 can be sucked well, but also the gap nozzle 1 in both directions. It becomes easy to move.

  Further, since the edges 5F and 5F of the pair of convex portions 5 and 5 have a curved shape that is convex toward the distal end side when viewed from the direction in which the pair of convex portions 5 and 5 overlap each other, the edges 5F and 5F extend along the bottom surface 102 that is the suction surface. When the gap nozzle is moved, partial wear is reduced, and the direction of the gap nozzle 1 with respect to the bottom surface 102 can be changed smoothly.

  Further, since the edges 5F and 5F of the pair of convex portions 5 and 5 protrude in an arc shape when viewed from the direction in which the pair of convex portions 5 and 5 overlap, the bottom surface serving as the suction surface regardless of the left and right directions. Regardless of which direction the gap nozzle is moved along 102, partial wear is reduced, and the angle of the gap nozzle 1 with respect to the bottom face 102 can be changed smoothly.

  Hereinafter, as an effect on the embodiment, the edges 5F and 5F at the tip end are formed in a semicircular shape when viewed from the direction in which the pair of convex portions 5 and 5 overlap each other. Since the convex portions 5 and 5 are in contact with the bottom surface 102 in a wide angle range close to 90 degrees), the dust in the gap 101 can be satisfactorily sucked at all inclination angles, and the convex portions 5 and 5 are partially Wear is reduced, and the direction of the gap nozzle 1 can be changed smoothly. Furthermore, since the notches 7 and 7 that are air inlets are formed at the center in the left-right direction on the base end side of the nozzle body 2, even if paper or the like is sucked into the inlet 3, Since the outside air can be continuously sucked from the notches 7 and 7, an excessive load is not applied to the motor of the vacuum cleaner. In addition, since the nozzle body 2 is provided to be rotatable about the central axis Z by the rotation connecting portion 14, the direction of the nozzle body 2 with respect to the central axis Z can be adjusted. Further, since the edges 5F and 5F of the pair of convex portions 5 and 5 are formed in a semicircular shape centering on a diametrical axis orthogonal to the central axis Z, the surface of the edge F on the inner and outer surfaces of the nozzle body 2 is formed. It becomes a semicircular shape of the same shape.

  FIG. 6 shows a second embodiment of the present invention, in which the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. This figure shows a modification of the air inlet. In the second embodiment, the nozzle body 2 is formed with a through hole 21 as an air inlet at a position away from the recesses 6 and 6. In this example, a circular through hole 21 is formed on the proximal end side of the nozzle body 2 away from the bottom position of the pair of recesses 6 and 6.

  As described above, in the present embodiment, even when paper or the like is sucked into the suction port 3 and is blocked, the outside air can be continuously sucked from the through hole 21, so that an excessive load is applied to the motor of the vacuum cleaner and the like. Without removing the vacuum cleaner, paper can be removed. As described above, this embodiment also has the same operations and effects as the above embodiment.

  Further, in the present embodiment, since the through hole 21 that is the air introduction port is formed at a position away from the recesses 6 and 6, even if the suction port 3 is blocked, the through hole 21 is not easily blocked. Suction from the hole 21 can be ensured.

  FIG. 7 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and the description thereof will be omitted in detail. The figure shows a modification of the suction port 3. In the third embodiment, the edges 5F and 5F of the pair of convex portions 5 and 5 have a shape in which the tips of the pair of oblique sides 22 and 22 of the isosceles triangle are connected by the arc portion 23. The angle θ formed by the pair of oblique sides 22 and 22 is an acute angle, which is 60 degrees in the drawing. The pair of convex portions 5 and 5 have the same shape, and the pair of concave portions 6 and 6 have the same shape. The pair of convex portions 5, 5 are plane symmetric with respect to the first surface including the central axis Z of the nozzle body 2, and the pair of concave portions 6, 6 includes the second surface including the central axis Z. Is plane-symmetric. The definitions of the first surface and the second surface are as described in the first embodiment. That is, the first surface and the second surface are orthogonal to each other.

  As described above, in this embodiment, by providing the arc portion 23 at the tip, the edges 5F and 5F of the pair of convex portions 5 and 5 are seen from the direction in which the pair of convex portions 5 and 5 overlap each other. Since it has a curved shape that is convex to the side, the same operations and effects as the above-described embodiments are achieved in correspondence with claims 1 to 3.

  FIG. 8 shows a fourth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and the description thereof will be omitted in detail. The figure shows a modification of the suction port 3. In the fourth embodiment, the edges 5F and 5F of the pair of convex portions 5 and 5 are such that the tip 25 is eccentric to one side in the left-right direction, the one-side curved portion 26 on one side in the left-right direction from the tip 25, and the other side in the left-right direction. And the other side curved portion 27. The pair of convex portions 5 and 5 have the same shape, and the pair of convex portions 5 and 5 are plane-symmetric with respect to the first surface including the central axis Z of the nozzle body 2, and the one-side curved portion The concave portion 6A on the 26th side and the concave portion 6B on the other side curved portion 27 side have different shapes. The definition of the first surface is as described in the first embodiment.

  As described above, the edges 5F and 5F of the convex portions 5 and 5 have the curvature of the other side curved portion 27 increased, so that they are suitable for use when the nozzle body 2 is tilted toward the other side curved portion 27. It will be a thing. Therefore, if the nozzle body 2 is rotated around the central axis Z by the rotation connecting portion 14 so that the side on which the nozzle body 2 is tilted becomes the other-side curved portion 27, the usability is good.

  As described above, in this embodiment, the edges 5F and 5F of the pair of convex portions 5 and 5 have a curved shape that is convex toward the tip side when viewed from the direction in which the pair of convex portions 5 and 5 overlap each other. Corresponding to claims 1 to 3, the same operations and effects as the above-described embodiments are achieved.

  FIG. 9 shows a fifth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-described embodiments, and the description thereof will be omitted and detailed. The figure shows a modification of the suction port 3. In the fifth embodiment, the edges 5F and 5F of the pair of convex portions 5 and 5 have a substantially isosceles trapezoidal shape, and the pair of oblique sides 31 and 31 and the upper sides that connect the distal ends of these oblique sides 31 and 31. 32. The oblique side portion 31 and the upper side portion 32 may be connected by a curved portion.

  The pair of convex portions 5 and 5 have the same shape, and the pair of concave portions 6 and 6 have the same shape. The pair of convex portions 5 and 5 are symmetrical with respect to the first surface including the central axis Z of the nozzle body 2, and the pair of concave portions 6 and 6 include the second axis including the central axis Z. It is plane symmetric with respect to the plane. This is because the edges 5F and 5F of the pair of convex portions 5 and 5 are symmetrical with respect to the second surface including the central axis Z of the nozzle body 2, and the edges 6F and 6F of the pair of concave portions 6 and 6 are provided. Is also symmetrical with respect to the first plane including the central axis Z. The definitions of the first surface and the second surface are as described in the first embodiment. That is, the first surface and the second surface are orthogonal to each other.

  As described above, in this embodiment, the pair of convex portions 5 and 5 are plane symmetric and the pair of concave portions 6 and 6 are plane symmetric. Therefore, corresponding to the first and second embodiments, the same as the above embodiments. Has an effect and effect.

  In addition, this invention is not limited to the above Example, A various deformation | transformation implementation is possible within the range of the summary of invention. For example, the shape of the convex portion is not limited to the above-described embodiment, and various shapes can be used. Moreover, you may provide the notch part of Example 1, or the through-hole of Example 2 in the thing of Examples 3-5.

1 Nozzle nozzle 2 Nozzle body 3 Suction port (opening)
5 convex portion 6 concave portion 101 gap 102 bottom surface (suction surface)

Claims (4)

In the cylindrical gap nozzle with the open end,
The clearance nozzle characterized by the opening part of the said front end having a pair of convex part which protruded in the length direction, and a pair of recessed part provided between these pair of convex parts.   The gap nozzle according to claim 1, wherein the pair of convex portions are plane-symmetric and the pair of concave portions are plane-symmetric.   The gap nozzle according to claim 1 or 2, wherein the edge of the pair of convex portions has a curved shape that is convex toward the tip side when viewed from the direction in which the pair of convex portions overlap each other.   The gap nozzle according to claim 3, wherein edges of the pair of convex portions protrude in an arc shape when viewed from a direction in which the pair of convex portions overlap each other.

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