CN115768321A - Suction nozzle of dust collector - Google Patents

Abstract

Provided is a vacuum cleaner nozzle, wherein a brush can sufficiently sweep out dust accumulated at the bottom and corners of a hole, a flexible pipe can efficiently suck in the swept-out dust, and the gripping mode does not need to be changed during cleaning, thereby having good use convenience and reducing labor and time for cleaning. A suction nozzle (1) of a vacuum cleaner is provided with a main body (2) connected with a suction pipe of the vacuum cleaner through a connecting port, a plurality of flexible pipes (4) protruding from the front end surface (3) of the main body (2) towards the front, and a brush (5), wherein the brush (5) is provided with a datum line (L) on the front end surface (3) ₁ ) A first row (6) and a second row (7) intersecting the first row (6) at an intersection (O), wherein the front end surface (3) is divided by the first row (6) and the second row (7), and a plurality of sections (S) are formed around the intersection (O) ₁ 、S ₂ 、S ₃ 、S ₄ )，The flexible tube (4) is provided with a suction port (4 a) opened at the front end thereof and a fixing portion (4 b) fixed to the front end surface (3), and is disposed in all of the plurality of sections (S) ₁ 、S ₂ 、S ₃ 、S ₄ )。

Description

Suction nozzle of dust collector

Technical Field

The present invention relates to a vacuum cleaner nozzle which is provided with a plurality of flexible tubes and brushes and is connected with a suction tube of a vacuum cleaner, in particular to the following vacuum cleaner nozzle: since the brush can be deformed in accordance with the shape of the cleaning object, the tip of the brush can efficiently sweep out dust and the like without changing the gripping manner of the vacuum cleaner nozzle by the user, and the flexible tube can immediately suck in the swept-out dust and the like.

Background

In the present day, since the cleaner head mainly cleans a flat floor surface, the lower surface of the suction opening is also designed to be flat. Therefore, it is difficult to sufficiently suck dust and dust accumulated in fine portions having complicated shapes such as corners of rooms, doors, windows, furniture, and the like, grooves such as rails of windows, and elongated stepped portions. Thus, a mouthpiece for a fine part having a cross section of the suction port with a long and narrow beak shape is additionally sold as an optional product.

However, the suction port of the nozzle for the fine portion described above is easily adsorbed on the surface of the fine portion, and therefore, there is a problem that the suction efficiency of dust and the like is lowered due to a decrease in air sucked from the suction port.

In order to solve the above problems, a technique for implanting a brush into a suction port of a vacuum cleaner nozzle for a fine part, which prevents the suction port from being adsorbed on the surface of the fine part and can maintain suction efficiency of dust and the like, has been developed, and several inventions and proposals have been disclosed with respect to this technique.

Patent document 1 discloses an invention relating to a gap nozzle of an electric vacuum cleaner having good dust suction performance and high dust collection performance, with the name of "gap nozzle of electric vacuum cleaner".

The invention disclosed in patent document 1 is characterized by including: a suction port portion formed in a cylindrical shape having a narrow width and a substantially rectangular shape in plan view, having a substantially rectangular suction port in a bottom surface, and including a suction duct for sending air from the suction port to the cleaner body via a connection portion; an air intake part provided on either side of the longitudinal direction of the nozzle part and provided on a side wall of the nozzle part; and a communication port provided at a lower end portion of a side wall of the mouthpiece section and communicating the suction duct with the air intake section, the air intake section being provided with a plurality of brush members made of a soft material at equal intervals on a bottom surface thereof.

In the invention having such a feature, the plurality of brush members are provided on the bottom surface of the air intake portion, so that the brush members do not adhere to the surface to be cleaned even if the bottom surface of the nozzle unit adheres to the surface to be cleaned. Therefore, the air flows near the suction port and is blown to the surface to be cleaned. Therefore, fine dust or the like is blown up from the surface to be cleaned, and the blown dust or the like can be sucked into the suction port portion. As a result, according to the invention disclosed in patent document 1, the dust can be reliably collected while preventing the suction of the dust from being reduced.

Patent document 2 discloses a vacuum cleaner that effectively functions in a vacuum cleaning operation, under the name "vacuum cleaner tool for an electric vacuum cleaner".

The scheme disclosed in patent document 2 is characterized by including: a dust collection main body having a suction connection port at one end, the suction connection port being connectable to a suction pipe of an electric vacuum cleaner, and the other end having a large diameter into which a dust collection head can be fitted and inserted, and having a hollow interior; a dust collection head having a plurality of flexible suction hoses fitted and held in the large-diameter portion of the dust collection body; and a ring-shaped brush, wherein the base part is embedded and assembled on the periphery of the dust collection main body in a mode of surrounding the periphery of the dust collection head, and the brush implanted in the ring-shaped brush is longer than a suction hose arranged on the dust collection head.

In a configuration having such a feature, dust is sucked from an opening portion at the distal end of the flexible suction hose. However, by providing the brush implanted in the annular brush around the suction hose, the opening of the suction hose is not attracted to the surface to be cleaned. Therefore, similarly to the invention disclosed in patent document 1, a decrease in suction efficiency of dust and the like can be prevented.

When the cleaning head is pressed in accordance with the state of the surface to be cleaned, dust and the like adhering to the surface to be cleaned is swept up by the bent brush and sucked into the cleaning main body from the suction hose. Therefore, according to the scheme disclosed in patent document 2, the efficiency of cleaning the fine portion can be improved.

Patent document 3 discloses an invention relating to a tip suction member that efficiently sweeps out and sucks dust adhering to corners of a room and the like, under the name of "tip suction member of electric vacuum cleaner".

The invention disclosed in patent document 3 is characterized by being composed of: a brush holder; a housing fixed to an opening of the brush holder and having a brush implanted in a peripheral edge thereof; and a suction port which is provided with a plurality of thin tube bodies in a holding body part extending from a part of the inner wall of the housing in the center direction, is formed between the inner wall of the housing and the outer periphery of the holding body part, and gradually changes the length of the brush from the surface where the brush is implanted.

In the invention having such a feature, since the length of the brush from the surface on which the brush is installed is gradually changed, the tip of the brush can be easily brought into contact with corners of a room, the back side of a groove, a narrow gap, or the like. Therefore, the adhered dust or fine dust can be swept up and sucked through the narrow tube body.

Further, since the brush is provided at the periphery of the suction port, the brush can sweep dust toward the suction port of the suction member by its elasticity during the sweeping operation. Therefore, the cleaning can be performed more reliably and quickly.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open No. 2000-93361

Patent document 2: japanese Kokai publication Hei-6-85648

Patent document 3: japanese patent laid-open publication No. H8-182640

Disclosure of Invention

Problems to be solved by the invention

However, in the invention disclosed in patent document 1, the plurality of brush members are provided only on the bottom surface of the air introduction portion, and are not provided on the entire bottom surface of the mouthpiece portion. Therefore, for example, in the case where the cleaning object is a hole having a bottom and a wall, in order to sufficiently sweep out dust accumulated in the corners of the bottom, and the wall of the hole, it is necessary to bring the brush member into contact with at least the entire periphery of the corner after the gap suction nozzle is inserted into the hole. Therefore, a user needs to change the holding manner of the gap suction nozzle many times during cleaning so that the brush member follows the shape of the corner, and thus handling of the suction hose of the vacuum cleaner and the vacuum cleaner main body connected to the gap suction nozzle becomes troublesome. Therefore, the invention disclosed in patent document 1 is considered to have a problem that the usability is poor, and the labor and time required for cleaning are increased.

Further, in the configuration disclosed in patent document 2, since the brush is provided so as to surround the periphery of the dust collection head, it is considered that the frequency of changing the gripping manner of the dust collection body when cleaning the hole portion having the bottom portion and the wall portion is reduced as compared with the case of the invention disclosed in patent document 1. However, if the diameter of the brush implanted in a ring shape is not equal to the diameter of the bottom, the circumferential length of the brush contacting the corners of the bottom and the wall is shortened, and it is considered that the frequency of the user changing the gripping manner of the dust collection body is difficult to be significantly reduced as compared with the case of the invention disclosed in patent document 1. Therefore, the solution disclosed in patent document 2 also has a problem of poor usability.

Further, since the suction hose is disposed inside the annular brush, it is difficult for the suction hose to suck dust and the like present outside the brush.

Further, since the plurality of suction hoses are distributed in a planar manner in the aperture portion of the dust collection main body, even if the dust collection main body is slightly inclined after being inserted into the hole portion and the brush and the portions of the suction hoses distributed near the brush are simultaneously brought into contact with the corner, the presence of the brush and the suction hoses other than the portions becomes an obstacle. Therefore, the solution disclosed in patent document 2 is considered to have the following problems: the brush cannot sufficiently sweep out dust and the like accumulated in the corners of the hole, and the swept-out dust and the like cannot be efficiently sucked in even inside the brush.

Next, in the invention disclosed in patent document 3, since the narrow tube body is disposed inside the substantially annular brush, the invention disclosed in patent document 3 has a problem that the suction efficiency of dust and the like located outside the brush is not good, as in the case of the solution disclosed in patent document 2.

On the other hand, since the length of the brush from the surface where the implant is provided gradually changes, the brush and the narrow tube body can be simultaneously brought into contact with the corner of the hole. Therefore, in the invention disclosed in patent document 3, it is considered that the efficiency of sufficiently sweeping out dust and the like accumulated in the corners of the hole and sucking in the swept-out dust and the like inside the brush is higher than that in the case of the proposal disclosed in patent document 2.

However, since the brush is provided along the housing in a substantially annular shape, it is difficult to consider that the frequency of the user changing the gripping manner of the dust collection body is significantly less than that in the invention disclosed in patent document 1, as in the case of the invention disclosed in patent document 2. Therefore, the invention disclosed in patent document 3 also has a problem of poor usability.

Means for solving the problems

The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to provide a vacuum cleaner nozzle which can sufficiently sweep out dust and the like accumulated on the bottom and corners of a cleaning object, for example, a hole, by a brush, and can efficiently suck in the swept-out dust and the like by a flexible tube, and which is convenient for a user to use and can reduce labor and time required for cleaning because the user does not need to change a grip during cleaning.

In order to achieve the above object, a first aspect of the present invention is a vacuum cleaner nozzle comprising a main body to which a connection port is connected to a suction pipe of a vacuum cleaner, a plurality of flexible pipes projecting forward from a distal end surface of the main body, and a brush, wherein the brush comprises a first row arranged along a reference line on the distal end surface and one or more second rows intersecting the first row at an intersection point, the distal end surface is divided by the first row and the second row, and a plurality of partitions divided around the intersection point are formed, the flexible pipe comprises a suction port opened at a distal end thereof and a fixing portion fixed to the distal end surface, and the flexible pipe is disposed in at least one of the plurality of partitions.

In the invention having such a configuration, as the "first row", in addition to a row along the reference line which is a completely straight line, a row substantially along the reference line while changing in a wavy or zigzag manner may be considered. The "second row" may be a completely straight line, or may be a wave-like or zigzag-like change.

The reference line is a virtual straight line on the distal end surface, and divides the area of the distal end surface into two equal or unequal parts. Therefore, the intersection of the first row and the second row does not have to be arranged at the center point of the front end surface of the main body. In addition to the intersection point formed by the midpoint of the first column overlapping the midpoint of the second column, the intersection point may be formed by the end of the first column overlapping the end of the second column. Further, one or more flexible pipes may be arranged in each section.

The fixing portion in the present application refers to a portion where the flexible tube is fixed to the distal end surface, but the fixing may be integrally fixed to the distal end surface, may be fixed to the distal end surface so as to be continuous thereto, and may be any fixing method as long as the flexible tube and the distal end surface do not have a gap.

In the invention having the above-described configuration, when the midpoint of the first row and the midpoint of the second row overlap and form an intersection, for example, the vacuum cleaner nozzle is inserted into a hole having a bottom and a wall, and the tip of the first row of the brush is pressed along the corner of the bottom and the wall, the portions of the second row near both ends come into contact with the bottom and the wall, respectively, and the tips of the portions near both ends are bent in the direction of approaching each other. Thus, the front ends of the first and second rows are all concentrated at the corners and arranged in a row along the corners.

The structure of the wall portion with respect to the bottom portion, for example, the direction of travel of the corner, and the direction in which the vacuum cleaner nozzle is pushed against the corner, differs depending on whether the structure is mainly the first row, the second row, or both the first row and the second row. However, even when the user presses the brush at his or her own corner, any of the three actions described above occurs, and the tips of the first and second rows are all collected in one row along the corner.

Further, since the flexible tube is disposed in at least one of the plurality of sections, even if the shape of the bottom portion and the insertion position of the vacuum cleaner nozzle into the bottom portion are different, the suction port of the flexible tube is often located at a position not overlapping with the respective tips of the first row and the second row concentrated at the corner. Therefore, the dust and the like to be swept out are immediately sucked in by the flexible tube regardless of the shape of the bottom portion and the like.

Next, a second invention is characterized in that, according to the first invention, the second row is arranged orthogonally to the first row, and the flexible tubes are disposed in all of the plurality of divisions.

In the invention having such a configuration, in addition to the operation of the first invention, since the flexible tubes are disposed in all of the plurality of sections, the flexible tubes are disposed substantially uniformly in the circumferential direction of the distal end surface about the intersection of the first row and the second row. Therefore, when the cleaning object is a hole, the flexible tube can be brought close to the corner substantially uniformly over the entire circumference of the corner regardless of the shape of the bottom.

In addition, a third invention is characterized in that a corner portion having at least a corner portion provided near the intersection point on the cross section of the flexible tube is formed at least at a portion near the fixed portion in the longitudinal direction of the flexible tube.

In the invention of such a structure, it is possible to consider that the corner portion has, for example, an isosceles triangle shape, a sector shape, a drop shape in the cross section of the flexible pipe. Further, the cross section of the flexible pipe means a section parallel to the front end face.

In the invention having the above configuration, in addition to the effects of the first or second invention, the flexible tube can be prevented from being excessively bent at the corner portion. Further, the restoring force of the bent flexible pipe to the original straight shape is stronger at the corner than at the other portions. Therefore, by disposing the corner portion at a position close to the intersection of the first row and the second row, the bent flexible tube is restored so as to pass through the intersection and to follow the linear direction orthogonal to the distal end surface. As a result, the bent flexible pipe is reliably restored to the shape protruding forward from the distal end surface of the main body before bending.

A fourth aspect of the present invention is the suction port according to any one of the first to third aspects, wherein an end surface of the suction port is parallel to the distal end surface over an entire circumference thereof, or is inclined so as to be closer to the distal end surface in a direction from an intersection point on the distal end surface toward a circumferential surface of the distal end surface.

In the invention having such a configuration, in addition to the operation of any one of the first to third inventions, when the end surface of the suction port is parallel to the distal end surface over the entire circumference thereof, the flexible tube is also bent by pressing the brush toward the corner of the hole, for example, and at this time, gaps are formed between the end surface and the bottom and wall portions. Therefore, the suction port can efficiently suck dust and the like through the gap.

On the other hand, when the end surface of the suction port is inclined, the end surface can be brought closer to the bottom and the wall, and therefore the suction port is less likely to be an obstacle when the brush comes into contact with a corner.

Moreover, a fifth invention is characterized in that according to any one of the first to fourth inventions, the maximum length from the front end face of the plurality of flexible tubes is shorter than the length from the front end face of the brush.

In the invention having such a configuration, in addition to the operation of any one of the first to fourth inventions, when all the leading ends of the first row and the second row are concentrated at the corners, the suction port of the flexible tube is prevented from being blocked by the cleaning object such as the leading ends of the first row and the second row, the bottom portion of the hole, and the wall portion. Therefore, the flexible tube can immediately suck in dust and the like swept out by the respective leading ends of the first row and the second row.

In the case where the end surface of the suction port is inclined so as to be closer to the distal end surface in a direction from the intersection point on the distal end surface toward the peripheral surface of the distal end surface, the maximum length of the flexible tube from the distal end surface means a length from the distal end surface to the end surface closest to the intersection point on the distal end surface.

Next, a sixth invention is characterized in that, according to any one of the first to fifth inventions, each of the plurality of flexible tubes has a shape in which an inner space thereof becomes narrower as it goes from the fixed portion toward the suction port.

In the invention having such a configuration, in addition to the operation of any one of the first to fifth inventions, since each of the plurality of flexible tubes has a tapered shape, dust or the like sucked from the suction port does not block the space inside the flexible tube.

The effects of the invention are as follows.

According to the first aspect of the invention, when the object to be cleaned is, for example, a hole having a bottom and a wall, and the vacuum cleaner nozzle is inserted into the hole, and, for example, the tip of the first row of the brush is pressed along the corner between the bottom and the wall, the tips of the first row are aligned in a row along the corner, and the tips of the second row are concentrated on the corner. That is, the front ends of the first and second rows are all concentrated at the corners and arranged along the corners. Therefore, by moving the cleaner nozzle along the corner, the dust and the like accumulated in the corner can be sufficiently swept by the respective leading ends of the first row and the second row.

Furthermore, regardless of the shape of the bottom portion, the respective tips of the first row and the second row are naturally aligned and concentrated at the corners by being pressed only at the corners, so that the user does not need to change the grip manner of the vacuum cleaner nozzle intentionally according to the shape of the bottom portion during cleaning. Therefore, the vacuum cleaner is not troublesome to handle by a suction hose of the vacuum cleaner connected to the vacuum cleaner nozzle, and is convenient to use, and labor and time for cleaning can be reduced.

In addition, the flexible tube is often located at a position not overlapping with the respective tips of the first row and the second row concentrated at the corners regardless of the shape of the bottom portion or the like, and therefore, the flexible tube can efficiently suck dust or the like regardless of the sweeping direction of the dust or the like.

According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, when the object to be cleaned is a hole, the flexible tube can be made to approach the corner substantially uniformly over the entire circumference of the corner regardless of the shape of the bottom portion, and therefore dust and the like accumulated in the corner can be sucked in without fail. Therefore, the problems of the prior art, such as the difficulty in obtaining a good finish state of cleaning without changing the holding mode of the dust collector nozzle, can be sufficiently solved.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the flexible tube is prevented from being bent excessively at the corner portion, and therefore the flexible tube can be prevented from being bent halfway. Therefore, dust and the like sucked into the flexible tube can be reliably conveyed to the main body.

Further, by disposing the corner portion near the center point of the distal end surface, the bent flexible tube is reliably restored to the shape protruding forward from the distal end surface of the main body before being bent, and the opening directions of all the plurality of flexible tubes after being restored are easily aligned. Therefore, even after the cleaner nozzle is continuously moved in different moving directions, dust and the like can be uniformly sucked around the cleaner nozzle.

According to the fourth aspect of the invention, in addition to the effect of any one of the first to third aspects of the invention, when the end surface of the suction port is parallel to the distal end surface over the entire circumference thereof, gaps are formed between the end surface and the bottom portion and between the end surface and the wall portion, respectively, so that the suction port can efficiently suck dust and the like through the gaps.

Further, when the end surface of the suction port is inclined, the suction port is less likely to come into contact with the bottom and the wall, and therefore the brush is likely to reach the corner and further easily sweep out dust and the like accumulated in the corner.

According to the fifth aspect of the invention, in addition to the effects of any one of the first to fourth aspects of the invention, the suction port of the flexible tube can be prevented from being blocked by the respective tips of the first row and the second row, and the dust and the like swept out by the respective tips can be sucked in immediately by the flexible tube, so that the dust and the like can be sufficiently removed from the cleaning object.

According to the sixth aspect of the invention, in addition to the effect of any one of the first to fifth aspects of the invention, since the dust and the like sucked from the suction port does not block the internal space of the flexible tube, the suction efficiency of the dust and the like and the cleaning efficiency such as shortening of the cleaning time can be maintained in a high state.

Drawings

Fig. 1 is a perspective view illustrating an appearance of a cleaner nozzle of the embodiment.

Fig. 2 (a) is a plan view of the vacuum cleaner nozzle of the embodiment as viewed from the direction a in fig. 1, and (b) is a side view of the flexible tube and the brush constituting the vacuum cleaner nozzle.

Fig. 3 (a) is an image of a test piece of the vacuum cleaner nozzle of the embodiment taken from a lateral direction, and (b) is an image of the test piece taken from an oblique upward direction.

Fig. 4 (a) to (d) are side views for explaining the function of the vacuum cleaner nozzle of the embodiment, respectively.

Fig. 5 (a) to (d) are plan views each viewed from the a direction in fig. 1 for explaining the action of the vacuum cleaner nozzle of the embodiment.

Fig. 6 (a) to (d) are images of test articles of the vacuum cleaner nozzle of the embodiment, respectively, taken from an obliquely upward direction.

Fig. 7 is an explanatory view for explaining a method of using the suction nozzle of the dust collector of the embodiment.

Fig. 8 is a perspective view showing an external appearance of a vacuum cleaner nozzle of a first modification of the embodiment.

Fig. 9 (a) is a side view of a vacuum cleaner nozzle according to a first modification of the embodiment, and (b) and (c) are a D-line view and an E-line cross-sectional view in (a), respectively.

Fig. 10 (a) and (c) are images of a test piece of the vacuum cleaner nozzle according to the first modification of the embodiment, taken from the lateral direction, and (b) and (d) are images of the test piece taken from the oblique upward direction, respectively.

Fig. 11 (a) to (d) are images for explaining the operation of the test pieces of the vacuum cleaner nozzle according to the first modification of the embodiment.

Fig. 12 (a) to (d) are images for explaining the operation of the test pieces of the vacuum cleaner nozzle according to the first modification of the embodiment.

Fig. 13 (a) to (c) are images for explaining the operation of the test pieces of the vacuum cleaner nozzle according to the first modification of the embodiment.

Fig. 14 (a) to (c) are images for explaining the operation of the test pieces of the vacuum cleaner nozzle according to the first modification of the embodiment.

Fig. 15 is an explanatory view for explaining a method of using the vacuum cleaner nozzle of the first modification of the embodiment.

Fig. 16 (a) and (b) are plan views of the vacuum cleaner nozzle according to the second and third modified examples of the embodiment, respectively, as viewed from the same direction as the direction a in fig. 1.

Detailed Description

Examples

A vacuum cleaner nozzle according to an embodiment of the present invention will be described with reference to fig. 1 to 7. Fig. 1 is a perspective view illustrating an appearance of a cleaner nozzle of the embodiment. Fig. 2 (a) is a plan view of the vacuum cleaner nozzle of the embodiment as viewed from the direction a in fig. 1, and fig. 2 (b) is a side view of the flexible tube and the brush constituting the vacuum cleaner nozzle.

As shown in fig. 1, a vacuum cleaner nozzle 1 according to an embodiment of the present invention includes a main body 2 to which a connection port 2a is connected to a suction pipe (not shown) of a vacuum cleaner, four flexible pipes 4 having flexibility and protruding forward from a circular front end surface 3 of the main body 2, and a brush 5. The front direction means a direction (Z direction in the drawing) perpendicular to the distal end surface 3. The direction a is opposite to the direction Z.

The main body 2 is made of hard synthetic resin, and is formed by connecting a lower portion 2A having a connection port 2A and an upper portion 2B having a distal end surface 3. The lower portion 2A and the upper portion 2B are each substantially cylindrical.

The flexible tube 4 is made of a synthetic resin having flexibility and restoring force, and includes a suction port 4a opened at a distal end thereof and a fixing portion 4b fixed to the distal end surface 3 of the main body 2. The flexible tube 4 has a shape in which the space therein becomes narrower toward the suction port 4a from the fixed portion 4b.

The brush 5 is made of a synthetic resin having appropriate hardness and restoring force required for sweeping out dust and dirt, and includes a distal end 5a and a proximal end 5b implanted in the distal end surface 3. The brush 5 is provided along a reference line L on the distal end surface 3 ₁ The first row 6 of the array and one second row 7 intersecting the first row 6 at an intersection O (see fig. 2 a). Furthermore, the second row 7 is along the reference line L ₁ Orthogonal line L ₂ And (4) arranging. And the Z direction is the same as the reference line L ₁ Orthogonal to and to the orthogonal line L ₂ The orthogonal direction.

Next, as shown in fig. 2 (a), the second column 7 is arranged orthogonally to the first column 6. The first row 6 and the second row 7 are rows in which the plurality of brush beamlets 5c are arranged in a row.

The distal end surface 3 of the main body 2 is divided into a first row 6 and a second row 7, and a plurality of sections S radially divided so as to have a uniform area around the intersection O are formed ₁ ～S ₄ 。

The flexible tube 4 is divided into a plurality of sections S ₁ ～S ₄ One for each of them. The intersection O is a reference line L ₁ Is perpendicular to the line L ₂ Is located at the center point of the front end face 3.

As shown in fig. 2 (b), the maximum length L of the plurality of flexible tubes 4 from the distal end surface 3 ₄ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short. Specifically, the maximum length L ₄ And length L ₅ The ratio of (a) to (b) is 9:10, but other ratios, for example, 7: 10. 8:10. an end face E of the suction port 4a of the flexible tube 4 ₄ Parallel to the front end face 3 over the entire circumference thereof.

Next, the appearance of the trial product of the vacuum cleaner nozzle of the embodiment will be described with reference to fig. 3. Fig. 3 (a) is an image of a test piece of the vacuum cleaner nozzle of the embodiment photographed from a side direction, and fig. 3 (b) is an image of the test piece photographed from an oblique upper direction. In fig. 3, the same reference numerals are given to the constituent elements shown in fig. 1 and 2, and the description thereof will be omitted.

As shown in FIG. 3 (a) and FIG. 3 (b), in the trial product of the vacuum cleaner nozzle 1, the end surface E of the suction port 4a of the flexible tube 4 ₄ Parallel to the front end face 3 over the entire circumference of the circle. However, a portion of the flexible tube 4 in the longitudinal direction (i.e., the Z direction) near the fixed portion 4b is formed with an angular portion 8 having a fan-like shape in cross section as shown in fig. 9 (c). The other test pieces have the same configuration as the vacuum cleaner nozzle 1 shown in fig. 1 and 2.

Next, the operation of the vacuum cleaner nozzle 1 will be described with reference to fig. 4 to 7. Fig. 4 (a) to 4 (d) are side views for explaining the operation of the vacuum cleaner nozzle according to the embodiment, fig. 4 (a) and 4 (B) are views from the B direction in fig. 2 (a), and fig. 4 (C) and 4 (d) are views from the C direction in fig. 2 (a). The direction B in FIG. 2 (a) is the direction from the reference line L ₁ Parallel to and orthogonal to the line L ₂ The direction of the C direction is perpendicular to the reference line L ₁ And an orthogonal line L ₂ All forming a 45 orientation. In fig. 3, the same reference numerals are given to the constituent elements shown in fig. 1 and 2, and the description thereof will be omitted.

It is assumed that the hole 50 including the bottom portion 50a and the wall portion 50b is cleaned by the vacuum cleaner nozzle 1. First, as shown in fig. 4 (a), before the flexible tube 4 and the brush 5 of the vacuum cleaner nozzle 1 are pressed against, for example, the corners 50c of the bottom portion 50a and the wall portion 50b, the flexible tube 4, the first row 6, and the second row 7 are all in a state of protruding in the Z direction, which is a direction orthogonal to the distal end surface 3. The angle formed by the bottom portion 50a and the wall portion 50b is 90 °.

The lengths of the leading ends 6a of the first row 6 and the leading ends 7a of the second row 7 from the leading end surface 3 are equal.

Thereafter, as shown in fig. 4 (b), when the flexible tube 4 and the brush 5 are pressed against the corner 50c, the tip 6a comes into contact withThe corner 50c and the front end 7a abut against the bottom 50a and the wall 50b, respectively. At this time, the portion of the second row 7 close to the peripheral surface 3a of the distal end surface 3 is bent toward the corner 50c. As a result, the tip 6a and the tip 7a are all focused on the corner 50c. On the other hand, the flexible tubes 4 and 4 are slightly bent so that the suction ports 4a and 4a face each other and approach each other. However, as illustrated in fig. 2 (b), the maximum length L of the flexible tube 4 from the distal end surface 3 ₄ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short, and therefore, a gap is generated between the suction port 4a and the corner 50c. And, because of the end face E of the suction port 4a ₄ (see fig. 2 (b)) is parallel to the distal end surface 3 over the entire circumference, and the size of the gap becomes larger.

As shown in fig. 4 (C), when the vacuum cleaner nozzle 1 is viewed from the direction C in fig. 2 (a), the state of the flexible tube 4, the first row 6, and the second row 7 before the flexible tube 4 and the brush 5 of the vacuum cleaner nozzle 1 are pressed against the corner 50C is also the same as the state described in fig. 4 (a).

Next, as shown in fig. 4 (d), when the flexible tube 4 and the brush 5 are pressed against the corner 50c, the portions of the first row 6 and the second row 7 close to the circumferential surface 3a of the distal end surface 3 are bent toward the corner 50c, and thus the distal ends 6a and 7a are all concentrated on the corner 50c. At this time, the flexible tube 4 is slightly bent, but a gap is still formed between the suction port 4a and the corner 50c.

The operation of the vacuum cleaner nozzle 1 will be described with reference to fig. 5. Fig. 5 (a) to 5 (d) are plan views, respectively, as viewed from the direction a in fig. 1, for explaining the operation of the vacuum cleaner nozzle of the embodiment. In fig. 5, the same reference numerals are given to the constituent elements shown in fig. 1 to 4, and the description thereof will be omitted.

Before the flexible tube 4 and the brush 5 are pressed against the corners 50c (see fig. 4) of the bottom portion 50a and the wall portion 50b as shown in fig. 5a, the flexible tube 4S is pressed against the corner 50c as shown in fig. 4a ₁ ～4S ₄ The first row 6 and the second row 7 are each in a state of protruding in the Z direction (see fig. 1) orthogonal to the distal end surface 3. The first row 6 and the second row 7 are along the reference line L ₁ Andorthogonal line L ₂ And (4) arranging. Further, the flexible tube 4S ₁ ～4S ₄ Are respectively allocated to the sub-areas S ₁ ～S ₄ The flexible tube 4.

Next, as shown in fig. 5 (b), the flexible tube 4S is placed so that the first row 6 is along the corner 50c ₁ ～4S ₄ The first row 6 and the second row 7 are pressed against the corner 50c, the front end 6a of the first row 6 is on the reference line L ₁ The length in the direction does not change in a manner concentrated at the corner 50c. Here, let L be the direction of travel of the corner 50c ₃ Then the direction of travel L ₃ And form a partition S ₁ And partition S ₄ And a partition S ₂ And partition S ₃ Reference line L of ₁ And (6) repeating. Therefore, if the traveling direction L is changed ₃ With respect to the formation of the division S ₁ And partition S ₄ Reference line L of ₁ When the angle of (b) is θ, θ is 0 °.

In contrast, the second row 7 is bent in the Z direction because the tip 7a of the second row 7 abuts against the bottom portion 50a and the wall portion 50b. Thus, the front end 7a is on the orthogonal line L ₂ The length in the direction becomes narrow, and the leading end 7a is concentrated at the corner 50c. Therefore, both the front end 6a and the front end 7a are concentrated at the corner 50c.

Next, as shown in fig. 5 (c), the flexible tube 4S is placed so that the second row 7 is along the corner 50c ₁ ～4S ₄ The first row 6 and the second row 7 are pressed against the corner 50c, and the front end 7a of the second row 7 is perpendicular to the line L ₂ The way in which the length in the direction does not change is focused on the corner 50c. At this time, θ is rotated counterclockwise by 90 ° about the intersection O.

In contrast, the front end 6a of the first row 6 abuts against the bottom 50a and the wall 50b and is concentrated at the corner 50c. Thus, the tip 6a is at the reference line L ₁ The length in the direction becomes narrower. Therefore, as in the case of fig. 5 (b), both the front end 6a and the front end 7a are concentrated at the corner 50c.

As shown in fig. 5 (d), if the flexible tube 4S is placed so that both the first row 6 and the second row 7 do not extend along the corner 50c ₁ ～4S ₄ The first row 6 and the second row 7 are pressed against the bottom 50a and the wall 50b, respectively, and the tips thereof are pressed against the bottom and the wall6a in the reference line L ₁ Length in the direction and front end 7a at orthogonal line L ₂ The length in the direction is almost unchanged from before pressing, and the leading ends 6a and 7a are concentrated at the corner 50c. In addition, the traveling direction L of the corner 50c ₃ Relative to the reference line L ₁ And an orthogonal line L ₂ Respectively inclined, theta in the section S ₁ And the inner part rotates 45 degrees counterclockwise.

Therefore, as in the case of fig. 5 (b) and 5 (c), the leading ends 6a and 7a are concentrated at the corners 50c. That is, the leading edge 6a and the leading edge 7a are concentrated at the corner 50c regardless of whether θ is rotated counterclockwise by 0 °, 45 °, or 90 ° around the intersection O. This is also the same for the cases where θ is 135 °, 180 °, 225 °, 270 °, 315 °, and others.

Thus, the traveling direction L of the corner 50c is not influenced ₃ With respect to the reference line L arranged in the first column 6 ₁ The angle θ of (a) is large, and the front end 6a and the front end 7a are concentrated at the corner 50c.

Next, the operation of the test piece of the vacuum cleaner nozzle 1 will be described with reference to fig. 6. Fig. 6 (a) to 6 (d) are images of test articles of the vacuum cleaner nozzle of the embodiment taken from an oblique upward direction, respectively. In fig. 6, the same reference numerals are given to the constituent elements shown in fig. 1 to 5, and the description thereof will be omitted.

FIG. 6 (a) is an image corresponding to FIG. 5 (a), and shows the flexible tube 4S ₁ ～4S ₄ The first row 6 and the second row 7 are pressed against the bottom 50a and the corner 50c of the wall 50b.

Next, fig. 6 (b) is a pressed image corresponding to fig. 5 (b), and the leading end 6a of the first row 6 is positioned on the reference line L ₁ The length in the direction does not change in a manner centered at the corner 50c.

In contrast, the front end 7a of the second row 7 abuts on the bottom portion 50a and the wall portion 50b at the orthogonal line L ₂ The length in the direction narrows so as to be concentrated at the corner 50c. Thus, it is understood that both the front end 6a and the front end 7a are substantially concentrated at the corner 50c after the pressing. At this time, the pair of flexible tubes 4S are separated by the corner 50c ₁ 、4S ₄ And another pair of flexible pipes4S ₂ 、4S ₃ Each suction port 4a is slightly inclined toward the corner 50c. However, as illustrated in fig. 2 (b), the maximum length L of the plurality of flexible tubes 4 from the distal end surface 3 ₄ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short, and in addition, the end face E of the suction port 4a of the flexible tube 4 ₄ Since the entire circumference is parallel to the distal end surface 3, even when the distal ends 6a and 7a are pressed against the corners 50c, the gap S is formed between the bottom 50a and the wall 50b _p1 . Therefore, all of the four suction ports 4a are not blocked by the first row 6 and the second row 7.

Fig. 6 (c) is an image corresponding to fig. 5 (c), and the leading end 6a of the first row 6 abuts on the bottom portion 50a and the wall portion 50b and is positioned on the reference line L ₁ The length in the direction becomes narrow so as to be concentrated on the corner 50c. And, the second column 7 is arranged to be at the orthogonal line L ₂ The way in which the length in the direction does not change is focused on the corner 50c.

Thus, it is understood that the first row 6 and the second row 7 are still concentrated at the corner 50c. At this time, the pair of flexible tubes 4S are separated by the corner 50c ₁ 、4S ₂ And another pair of flexible tubes 4S ₃ 、4S ₄ The suction ports 4a are slightly inclined toward the corners 50c, and it can be confirmed that a gap S is formed between the bottom 50a and the wall 50b _p1 . Therefore, all of the four suction ports 4a are still not blocked by the first row 6 and the second row 7.

Fig. 6 (d) is an image corresponding to fig. 5 (d), and it is understood that when both the first row 6 and the second row 7 are pressed against the bottom portion 50a and the wall portion 50b so as not to be along the corner 50c, the leading ends 6a and 7a are substantially concentrated at the corner 50c. At this time, the pair of flexible tubes 4S are separated by the corner 50c ₂ 、4S ₄ The suction ports 4a are inclined toward the corners 50c, and a gap S is formed between the bottom 50a and the wall 50b _p1 Therefore, the suction ports 4a are not blocked by the first row 6 and the second row 7. And the remaining pair of flexible tubes 4S ₁ 、4S ₃ The suction ports 4a are arranged right below the corner 50c, but a gap S is still formed between the suction ports and the corner 50c _p1 Therefore, the suction ports 4a are not blocked by the first row 6 and the second row 7.

Next, a method of using the vacuum cleaner nozzle 1 will be described with reference to fig. 7. Fig. 7 is an explanatory view for explaining a method of using the vacuum cleaner nozzle of the embodiment. In fig. 7, the same reference numerals are given to the constituent elements shown in fig. 1 to 6, and the description thereof will be omitted.

It is assumed that the hole 50 shown in fig. 4 and 5 is cleaned by the vacuum cleaner nozzle 1. The hole 50 includes a bottom 50a and a wall 50b which are circular and planar, and a corner 50c between the bottom 50a and the wall 50b. Wherein the bottom 50a is horizontal and the wall 50b is at an angle of 90 deg. to the bottom 50a.

As shown in fig. 7, in a method of using the vacuum cleaner nozzle 1 with respect to the hole 50, first, after the vacuum cleaner nozzle 1 is inserted into the hole 50, the flexible tube 4, the first row 6, and the second row 7 are pressed to the position shown in (1) at the corner 50c. Then, the vacuum cleaner nozzle 1 can be slid along the corner 50c as in (1) to (3) without changing the gripping manner in this state.

In detail, the traveling direction L at the corner 50c ₃ With respect to the partition S forming (1) ₁ And partition S ₄ Reference line L (see FIG. 5) ₁ When the angle θ of (b) is 0 °, the leading end 6a of the first row 6 is concentrated at the corner 50c as illustrated in fig. 5 (b). And the front end 7a of the second column 7 is along the orthogonal line L ₂ Becomes narrow and is concentrated at the corner 50c.

Therefore, the dust and the like accumulated in the corner 50c are swept by the front end 6a and the front end 7a which are concentrated on the corner 50c. Due to the flexible pipe 4S ₁ 、4S ₄ Each suction port 4a and the flexible tube 4S ₂ 、4S ₃ The suction ports 4a are opened with a gap S formed therebetween in the first row 6 and the second row 7 _p1 (refer to FIG. 6), the dust and the like swept out are immediately transferred to the flexible pipe 4S ₁ ～4S ₄ And (4) sucking in.

Then, when the vacuum cleaner nozzle 1 is slid counterclockwise, the traveling direction L is changed as in the case of (2) ₃ With respect to the formation of the division S ₁ And partition S ₄ Reference line L of ₁ The angle θ of (b) is changed to become 45 °. At this time, as illustrated in fig. 5 (d), the first row 6 follows the traveling direction L of the corner 50c ₃ Is bent and gradually bent, and the tip 6a thereof is concentrated at the corner 50c. On the other hand, the bent second row 7 gradually returns to a straight line along the Z-direction, and the leading end 7a gradually returns to a line along the orthogonal line L ₂ The original length of the direction is centered at corner 50c.

Therefore, the dust and the like accumulated in the corner 50c are swept by the front end 6a and the front end 7a which are concentrated on the corner 50c. Due to the flexible pipe 4S ₂ 、4S ₄ In the traveling direction L of the air inlet 4a ₃ Open in an upper-approaching manner and formed with a gap S _p1 So that the dust and the like to be swept out are immediately passed through the flexible pipe 4S ₂ 、4S ₄ And (4) sucking. Further, the flexible tube 4S ₁ 、4S ₃ In the traveling direction L of each suction port 4a ₃ Is opened just above, but because of the formation of the gap S _p1 Therefore, each suction port 4a is not likely to be blocked by the tip 6a and the tip 7 a. Therefore, dust and the like existing between the distal end 6a and the distal end 7a are also immediately transferred from the flexible tube 4S ₁ 、4S ₃ And (4) sucking.

Further, when the cleaner nozzle 1 is slid counterclockwise, the traveling direction L is as in the case of (3) ₃ With respect to the formation of the division S ₁ And partition S ₄ Reference line L of ₁ The angle θ exceeds 45 ° and becomes 90 °. At this time, as illustrated in fig. 5 (c), the front end 7a of the second column 7 is concentrated at the corner 50c. The leading end 6a of the first row 6 is along the reference line L ₁ Becomes narrow and is concentrated at the corner 50c.

Therefore, the dust and the like accumulated in the corner 50c are swept by the front end 6a and the front end 7a which are concentrated on the corner 50c. The dust and the like swept out are passed through the flexible tube 4S ₁ ～4S ₄ Inhalation is immediate.

When the vacuum cleaner nozzle 1 is slid counterclockwise along the corner 50c as in the case of returning from (3) to (1) without changing the gripping manner, the changes of the flexible tube 4, the distal end 6a, and the distal end 7a are the same as those in (1) when θ is 180 °, the same as those in (2) when θ is 135 °, 225 °, and 315 °, and the same as those in (3) when θ is 270 °.

Also in the case where the bottom portion 50a having an area larger than that of the distal end surface 3 is cleaned using the vacuum cleaner nozzle 1, the bottom portion 50a can be cleaned efficiently in the same manner as the operation of the vacuum cleaner nozzle 1A described with reference to fig. 11 and 12.

As described above, according to the vacuum cleaner nozzle 1, when the hole 50 is cleaned, the distal ends 6a and 7a can sufficiently sweep away dust and the like accumulated in the corner 50c, and the flexible tube 4S ₁ ～4S ₄ The dust and the like to be swept out can be efficiently sucked in. Therefore, the bottom 50a and the corner 50c of the fine portion such as the hole 50 can be easily cleaned without the need of handling the suction hose as in the conventional art. Therefore, the present invention can be applied to cleaning of fine parts in a vehicle interior, and can be particularly applied to cleaning of a vehicle interior having many irregularities.

Further, the user does not need to change the grip of the vacuum cleaner nozzle 1 regardless of the size of the angle θ, and thus the use convenience is improved, and the labor and time required for cleaning can be reduced.

In addition, since the flexible tube 4S ₁ ～4S ₄ Arranged in all of the plurality of sections S ₁ ～S ₄ So that the flexible tube 4S ₁ ～4S ₄ The tip end surface 3 is arranged substantially uniformly in the circumferential direction around the intersection O. Thus, the flexible tube 4S can be formed regardless of the area of the bottom portion 50a ₁ ～4S ₄ The corner 50c can be approached approximately uniformly over the entire circumference of the corner 50c. Thus, the flexible tube 4S is utilized ₁ ～4S ₄ Dust and the like accumulated in the corners 50c can be uniformly sucked.

In addition, as can be seen from fig. 7, the flexible tube 4S ₁ ～4S ₂ At least two of the suction ports 4a in (2) are always opened with the first row 6 and the second row 7 interposed therebetween, and therefore dust and the like existing outside and inside the first row 6 and the second row 7 can be reliably sucked.

Further, as illustrated in fig. 2 (b), the maximum length L of the flexible tube 4 from the distal end surface 3 ₄ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short, thereby at the suction port 4a and cornerA gap S is formed between the lands 50c _p1 In addition, the end face E of the suction port 4a ₄ Parallel to the front end face 3 over the entire circumference thereof, whereby a gap S _p1 The width is widened, and therefore a certain amount of flow of air for sucking in dust and the like can be ensured. Therefore, the suction port 4a is not attracted to the bottom 50a, the wall 50b, and the corner 50c, the cleaner nozzle 1 is easily moved, and dust and the like are not prevented from entering the flexible tube 4S ₁ ～4S ₄ Into the flow of (a).

And, for the inflow into the flexible pipe 4S ₁ ～4S ₄ Due to the flexible tube 4S ₁ ～4S ₄ Has a tapered shape that narrows from the fixed portion 4b toward the suction port 4a, so that dust or the like does not block the flexible tube 4S ₁ ～4S ₄ Is quickly transported to the cleaner body. Therefore, according to the vacuum cleaner nozzle 1, the cleaning efficiency, such as the suction efficiency of dust and the like and the reduction of the cleaning time, can be maintained in a high state.

Next, a vacuum cleaner nozzle according to a first modification of the embodiment will be described with reference to fig. 8 to 15. Fig. 8 is a perspective view showing an external appearance of a vacuum cleaner nozzle of a first modification of the embodiment. Fig. 9 (a) is a side view of a vacuum cleaner nozzle according to a first modification of the embodiment, and fig. 9 (b) and 9 (c) are a D-line view and an E-line cross-sectional view, respectively, in fig. 9 (a).

As shown in fig. 8, a vacuum cleaner nozzle 1A of a first modification of the embodiment includes a flexible tube 9 instead of the flexible tube 4 of the vacuum cleaner nozzle 1 of the embodiment. The flexible tube 9 has a suction port 9a opened at the tip end thereof and a fixing portion 9b fixed to the tip end surface 3, and is provided in all of the plurality of sections S ₁ ～S ₄ Each of the first and second electrodes (see fig. 9 (b)) is disposed one by one. The other structure of the cleaner nozzle 1A is the same as that of the cleaner nozzle 1.

Next, as shown in fig. 9 (a) and 9 (b), the end face E of the suction port 9a of the flexible tube 9 ₉ The flexible tube 9 is inclined so as to be closer to the distal end surface 3 in the longitudinal direction (i.e., Z direction) thereof along the radial direction R from the intersection point O on the distal end surface 3 toward the circumferential surface 3a of the distal end surface 3.

As shown in fig. 9 (a), the maximum length L of the plurality of flexible tubes 9 from the distal end surface 3 ₉ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short.

As shown in fig. 9 (b) and 9 (c), a corner portion 10 is formed over the entire length of the flexible tube 9, and the corner portion 10 has a corner portion K provided near the intersection O in the cross section of the flexible tube 9 ₁ . The angled portion 10 is formed with an angle K in addition to the angled portion 10 in the cross-section of the flexible pipe 9 ₁ In addition, the corner part K is provided ₂ 、K ₂ . That is, the flexible tube 9 has a substantially fan-shaped cross section near the fixed portion 9b, and a corner portion K ₁ Corresponding to the central angle, corner K, of the sector ₂ Corner K ₂ The sides in between correspond to the circular arcs of the sectors. Alternatively, the angled portion 10 may be formed at a portion of the flexible tube 9 near the fixed portion 9b in the longitudinal direction.

Next, the appearance of a trial product of the vacuum cleaner nozzle according to the first modification of the embodiment will be described with reference to fig. 10. Fig. 10 (a) and 10 (c) are images of a test piece of the vacuum cleaner nozzle according to the first modification of the embodiment, which are taken from the lateral direction, and fig. 10 (b) and 10 (d) are images of the test piece, which are taken from the oblique upward direction, respectively. In fig. 10, the same reference numerals are given to the constituent elements shown in fig. 1 to 9, and the description thereof will be omitted.

As shown in fig. 10 (a) to 10 (d), in the test piece of the vacuum cleaner nozzle 1A, an angled portion 10 is formed over the entire longitudinal direction of the flexible tube 9. However, the corner K ₂ 、K ₂ The closer to the suction port 9a, the larger the angle of (a).

Then, as shown in fig. 10 (a), the flexible tube 9 extends from the distal end surface 3 to the corner K ₁ End face E of ₉ The length of the rod is the maximum length L ₉ . The other structures of the test pieces are the same as those of the vacuum cleaner nozzle 1 shown in fig. 1 and 2.

Next, the operation of the dust collector nozzle 1A will be described with reference to fig. 11 to 15. Fig. 11 (a) to 11 (d) are images for explaining the operation of the test piece of the vacuum cleaner nozzle according to the first modification of the embodiment, fig. 11 (a) is an image when viewed from the F direction in fig. 9 (b), and fig. 11 (b) to 11 (d) are images when viewed from the H direction in fig. 11 (a). Also, the F direction in (B) of fig. 9 is the same direction as the B direction in (a) of fig. 2. In fig. 11, the same reference numerals are given to the constituent elements shown in fig. 1 to 10, and the description thereof will be omitted.

As shown in fig. 11 and 12, a case is assumed where the hole 50 including the bottom portion 50a and the wall portion 50b is cleaned using the vacuum cleaner nozzle 1A. First, as shown in fig. 11 (a) and 11 (c), before the flexible tube 9, the first row 6, and the second row 7 are pressed against the corners 50c of the bottom portion 50a and the wall portion 50b, they have the same functions as those of the vacuum cleaner nozzle 1 of the embodiment described in fig. 6 (a).

As shown in fig. 11 (b) and 11 (d), when the flexible tube 9, the first row 6, and the second row 7 are pressed against the corner 50c, the maximum length L of the flexible tube 9 from the distal end surface 3 is ₉ Is longer than the length L of the brush 5 from the front end face 3 ₅ Short, so that a gap S is generated between the suction port 9a and the corner 50c _p2 . And, end face E of suction port 9a ₉ Inclined as described above, so that the end face E ₉ Middle corner K ₂ 、K ₂ The side portions between the two contact the bottom portion 50a and the wall portion 50b, respectively, and as a result, the cleaner nozzle 1 is prevented from being difficult to approach the corner 50c.

Therefore, when the first row 6 and the second row 7 are concentrated at the corner 50c, the end faces E of the four flexible tubes 9 are each ₉ Are easily arranged at positions where they do not come too far from the corners 50c and do not come into close contact with the bottom 50a and the wall 50b.

Although not shown, the reference line L is a direction (with respect to the reference line L) orthogonal to both the G direction and the Z direction in fig. 9 (b) ₁ And an orthogonal line L ₂ All forming a direction of 45 °) the corner portion K in the case of viewing the cleaner nozzle 1A ₁ End face E of ₉ The angle with respect to the outer circumferential surface of the flexible tube 9 is about 50 °. And an end face E in this case ₉ In the shape of a slightly downwardly convex curved line.

Fig. 12 (a) to 12 (d) are images for explaining the operation of the test piece of the vacuum cleaner nozzle according to the first modification of the embodiment, fig. 12 (a) and 12 (b) are images when viewed from the G direction in fig. 9 (b), and fig. 12 (c) and 12 (d) are images when viewed from the I direction in fig. 12 (a). In fig. 12, the same reference numerals are given to the constituent elements shown in fig. 1 to 11, and the description thereof will be omitted.

As shown in fig. 12 (a) and 12 (c), the state of the flexible tube 9, the first row 6, and the second row 7 is the same as the state of the vacuum cleaner nozzle 1 of the embodiment described in fig. 6 (a) until the flexible tube is pressed against the corners 50c of the wall portion 50b and the bottom portion 50a.

Next, as shown in fig. 12 (b) and 12 (d), even when both the first row 6 and the second row 7 are pressed against the corner 50c so as not to be along the corner 50c, a gap S is still formed between the suction port 9a and the corner 50c _p2 . As shown in fig. 12 (d), the end face E of the suction port 9a sandwiched between the leading end 6a of the first row 6 and the leading end 7a of the second row 7 ₉ Not surrounded by the front end 6a and the front end 7a over the entire circumference thereof. Therefore, even the suction port 9a sandwiched between the tip 6a and the tip 7a can sufficiently suck dust and the like accumulated in the corner 50c.

Fig. 13 (a) to 13 (c) and fig. 14 (a) to 14 (c) are images for explaining the action of the test piece in the vacuum cleaner nozzle according to the first modification of the embodiment, and are images in the case where the test piece is moved in the traveling direction on a plane. In fig. 13 and 14, the same reference numerals are given to the constituent elements shown in fig. 1 to 12, and the description thereof will be omitted. And, the traveling direction X shown in FIG. 13 ₁ Is the opposite direction to the direction F in FIG. 9 (b), the traveling direction X shown in FIG. 14 ₂ Is the direction opposite to the G direction in fig. 9 (b).

As shown in FIG. 13 (a), the vacuum cleaner nozzle 1A is arranged to face X on a plane 51 ₁ When the direction is shifted, as shown in fig. 13 (b) and 13 (c), the tip 6a is mainly located closer to X in the entire body ₁ The front half part and the front end 7a are in contact with each other on the plane 51, so that the direction X can be made ₁ The direction sweeps out dust and the like accumulated on the flat surface 51.

Further, as shown in fig. 13 (b), the distance X is greater than the distance X between the tips 6a, 7a ₁ Since the two suction ports 9a are provided at the front side in the direction, the two suction ports 9a can immediately suck the dust and the like swept out.

In addition, the vacuum cleaner nozzle 1A is arranged on the plane 51 in the direction of X ₁ Direction opposite to that of X ₁ When the two directions orthogonal to each other are moved, the two suction ports 9a are always located in front of each direction, and therefore, the two suction ports 9a can immediately suck the dust and the like swept out regardless of the traveling direction.

In addition, the gaps S are generated between the four suction ports 9a and the plane 51 _p2 So that the flexible tube 9 can pass through the gap S _p2 Sucking in the swept-out dust and the like.

In addition, as shown in fig. 14 (a), the vacuum cleaner nozzle 1A is oriented on the plane 51 with respect to the X direction ₁ The direction forming an X of 45 DEG ₂ When the direction is moved, as shown in fig. 14 (b) and 14 (c), the flexible tube 9, the first row 6 and the second row 7 are oriented such that the suction port 9a, the tip 6a and the tip 7a are directed toward X ₂ Bending in the opposite direction. Therefore, mainly the front ends 6a and 7a are located close to X in the whole ₂ The forward half of the direction is in contact with the flat surface 51, so that the direction X is possible ₂ The direction sweeps out dust and the like accumulated on the flat surface 51.

Further, as shown in FIG. 14 (b), the distance X from the front ends 6a and 7a is larger ₂ Since one suction port 9a is provided at the front in the direction, the one suction port 9a can immediately suck the dust and the like swept out.

In addition, the vacuum cleaner nozzle 1A is arranged on the plane 51 in the direction of X ₂ Direction opposite to X ₂ When the two directions orthogonal to each other are moved, one suction port 9a is always present in front of each direction, so that one suction port 9a can immediately suck air regardless of the traveling directionThe swept-out dust and the like enter.

In addition to this, due to the maximum length L of the flexible tube 9 ₉ Is shorter than the length L of the brush 5 ₅ Short and the end face E of the suction port 9a ₉ Inclined, so that a gap S is generated between the four suction ports 9a and the flat surface 51 _p2 . Thus, the flexible tube 9 can pass through the gap S _p2 Sucking in the swept-out dust and the like.

As described above, the vacuum cleaner nozzle 1A is directed to the X direction ₁ 、X ₂ In the case of movement in other directions, the vacuum cleaner nozzle 1A also exhibits the same operation and effect as described above. In this way, the tips 6a and 7a can sweep out dust and the like accumulated on the plane 51, except for the corners 50c of the hole 50, regardless of the direction in which the cleaner nozzle 1A is moved. In addition, since one or more suction ports 9a are always present regardless of the direction in which the vacuum cleaner nozzle 1A is moved, one or more flexible tubes 9 can pass through the gap S _p2 The swept-out dust and the like are immediately sucked in.

Next, a method of using the vacuum cleaner nozzle 1A will be described with reference to fig. 15. Fig. 15 is an explanatory view for explaining a method of using the vacuum cleaner nozzle of the first modification of the embodiment. In fig. 15, the same reference numerals are given to the constituent elements shown in fig. 1 to 14, and the description thereof will be omitted.

It is assumed that the hole 52 having the square and flat bottom 52a and wall 52b and the corner 52c of the bottom 52a and wall 52b is cleaned using the vacuum cleaner nozzle 1A. Further, the bottom 52a is horizontal, and the angle of the wall portion 52b with respect to the bottom 52a is 90 °.

As shown in fig. 15, first, after the vacuum cleaner nozzle 1A is inserted into the hole 52, the flexible tube 4, the first row 6, and the second row 7 are pressed against the corner 52c at the position shown in (1). Then, the cleaner nozzle 1A can be slid along the four corners 52c as in (1) to (4) without changing the gripping manner in this state.

In detail, the traveling direction L at the corner 50c ₃ With respect to the partition S forming (1) ₁ And partition S ₄ Reference line L of ₁ Angle theta ofIn the case of 0 °, the front end 6a of the first row 6 and the front end 7a of the second row 7 converge at the corner 52c, as in the cleaner nozzle 1 illustrated in fig. 5 (b).

Therefore, the dust and the like accumulated in the corner 50c are swept out by the front end 6a and the front end 7a concentrated in the corner 52c. The suction ports 9a of the four flexible tubes 9 are opened with the first row 6 and the second row 7 interposed therebetween, and gaps S are formed therebetween _p2 (see fig. 11 (d)), the dust and the like that are swept out are immediately sucked in by the four flexible tubes 9.

Next, when the vacuum cleaner nozzle 1 is slid in the counterclockwise direction and is sequentially arranged as in the case of (2) to (4), the dust and the like are swept out by the front end 6a and the front end 7a concentrated at the corner 52c, and the swept-out dust and the like are immediately sucked in by the four flexible tubes 9, as in the case of (1).

Further, the four corners 52d where the corners 52c and 52c intersect each other are 45 °, 135 ° or the like, although illustration of the vacuum cleaner nozzle 1A is omitted. Therefore, when the angle θ is 45 °, the flexible tube 9 closest to the four corners 52d can sufficiently suck dust and the like accumulated in the four corners 52d, as in the flexible tube 9 indicated in (1). The reason why the flexible tube 9 can be brought close to the four corners 52d is that the end face E thereof is made to be close to the four corners 52d ₉ Inclined to further narrow the end face E ₉ Spaced from the four corners 52 d.

In addition, also in the wall portion corner 52e between the wall portion 52b and the wall portion 52b above the four corners 52d, after the first row 6 and the second row 7 are pressed against the wall portion corner 52e, for example, by sliding the cleaner nozzle 1A up and down, the dust and the like are swept out by the tip 6a and the tip 7a which are concentrated on the wall portion corner 52e, and the swept-out dust and the like are immediately sucked in by the at least one flexible tube 9, as in the case of (1) to (4).

In addition, as described with reference to fig. 11 and 12, in the bottom portion 52a, the distal ends 6a and 7a can sweep out dust and the like accumulated on the flat bottom portion 52a regardless of the direction in which the vacuum cleaner nozzle 1A is moved, and the flexible tube 9 can pass through the gap S _p2 The bottom 52a can be raised even when it has an area larger than the area of the distal end face 3 because the swept-out dust and the like are sucked inEffectively sweeping the bottom 52a and corners 52c. Further, even when the hole 50 shown in fig. 7 is cleaned by using the vacuum cleaner nozzle 1A, the bottom portion 50a having an area larger than that of the distal end surface 3 can be efficiently cleaned.

Therefore, according to the vacuum cleaner nozzle 1A, the cleaning of the hole can be reliably performed regardless of whether the bottom of the hole has four corners or the area of the bottom.

In addition, since the angled portion 10 is formed in the flexible tube 9, the flexible tube can be prevented from being bent at the corner portion K ₁ 、K ₂ 、K ₂ Is bent excessively. Therefore, the flexible tube 9 can be prevented from being bent halfway. Therefore, the dust and the like sucked into the flexible tube 9 can be reliably conveyed to the main body 2.

And, by arranging the corner K ₁ The bent flexible tube 9 is disposed at the center point of the distal end surface 3, that is, at a position close to the intersection point O, and is reliably restored to a shape protruding forward (Z direction) from the distal end surface 3 of the body 2 before being bent, so that the opening directions of all of the plurality of flexible tubes 9 are easily matched after being restored. Therefore, even after the vacuum cleaner nozzle 1A is continuously moved in different moving directions, dust and the like can be uniformly sucked around the vacuum cleaner nozzle 1A.

The operation and effect of the other dust collector nozzle 1A are the same as those of the dust collector nozzle 1 of the embodiment.

Next, a vacuum cleaner nozzle according to a second and third modified examples of the embodiment will be described with reference to fig. 16. Fig. 16 (a) and 16 (b) are plan views of the vacuum cleaner nozzle according to the second and third modified examples of the embodiment, respectively, as viewed from the same direction as the direction a in fig. 1. In fig. 16, the same reference numerals are given to the constituent elements shown in fig. 1 to 15, and the description thereof will be omitted.

As shown in fig. 16 (a), a vacuum cleaner nozzle 1B according to a second modification of the embodiment includes a reference line L extending along the distal end surface 3 ₁ A first column 6 of rows and two second columns 7 intersecting the first column 6 at an intersection point O. In detail, one end of each of the first row 6 and the second rows 7The portions 6b, 7b intersect at an intersection point O.

And, the two second columns 7 are along the reference line L ₁ A straight line L formed by rotating 120 degrees and 240 degrees counterclockwise respectively ₁₂₀ 、L ₂₄₀ And (4) arranging. Therefore, the front end face 3 is divided at 120 ° intervals around the intersection O, and three divisions S having a uniform area are formed ₁ ～S ₃ 。

In addition, three flexible tubes 4 are respectively arranged in the section S ₁ ～S ₃ One at each 120 ° around the intersection O. Therefore, the three flexible tubes 4 are arranged uniformly in the circumferential direction of the distal end surface 3 with the intersection point O as the center, and the one first row 6 and the two second rows 7 are also arranged with the intersection point O as the center in the same manner as described above. The other structure of the cleaner nozzle 1B is the same as that of the cleaner nozzle 1 of the embodiment.

In the vacuum cleaner nozzle 1B, for example, when the other end 6c of the first row 6 is pressed against the corner 50c at the same position as (1) shown in fig. 7, the leading end 6a (see fig. 4 and the like) of the first row 6 is along the reference line L ₁ The direction is shortened, and the leading ends 7a, 7a (see fig. 4 and the like) of the two second rows 7 are connected to each other in an arc shape. Therefore, the tip 6a and the tips 7a and 7a are concentrated at the corner 50c, and dust and the like accumulated at the corner 50c can be swept out. The swept-out dust and the like are sucked in by the two flexible tubes 4 opening to the outside of the corner 50c and the one flexible tube 4 opening to the inside (intersection O side) of the corner 50c.

In addition, at positions other than (1) shown in fig. 7, the tip 6a and the tips 7a and 7a can be freely deformed according to the shape of the corner 50c, and therefore, they are concentrated on the corner 50c, and accumulated dust and the like can be swept out. Then, the swept-out dust and the like are sucked into the flexible pipe 4 opened to the outside of the corner 50c and the flexible pipe 4 opened to the inside of the corner 50c. The number of the flexible tubes 4 that open to the outside and inside of the corner 50c varies depending on the arrangement of the vacuum cleaner nozzle 1B with respect to the corner 50c, but in either case, dust and the like present outside and inside the tip 6a and the tips 7a, 7a can be sucked. Therefore, the hole 50 can be cleaned quickly and easily by the vacuum cleaner nozzle 1B without changing the gripping manner. The operation and effect of the other dust collector nozzle 1B are the same as those of the dust collector nozzle 1 of the embodiment.

As shown in fig. 16 (b), a vacuum cleaner nozzle 1C according to a third modification of the embodiment includes a reference line L extending along the distal end surface 3 ₁ A first column 6 of rows and three second columns 7 intersecting the first column 6 at intersection points O. In detail, the respective midpoints of one first column 6 and three second columns 7 intersect at an intersection point O.

And, the three second columns 7 are along the reference line L ₁ Straight lines L respectively rotating from 45 degrees to 135 degrees counterclockwise and running at 45 degrees ₄₅ 、L ₉₀ 、L ₁₃₅ And (4) arranging. Therefore, the tip face 3 is divided at 45 ° intervals around the intersection O, and eight divisions S having a uniform area are formed ₁ ～S ₈ 。

In addition, four flexible tubes 4 are respectively arranged in the subareas S ₁ 、S ₃ 、S ₅ 、S ₇ One at every 90 ° with the intersection O as the center. Therefore, the four flexible tubes 4 are arranged uniformly in the circumferential direction of the distal end surface 3 around the intersection point O, and the one first row 6 and the three second rows 7 are also arranged around the intersection point O in the same manner as described above. The other structure of the cleaner nozzle 1C is the same as that of the cleaner nozzle 1 of the embodiment.

In the vacuum cleaner nozzle 1C, for example, the other end portions 6C, 6C of the first row 6 are divided into the partitions S ₁ And partition S ₂ When one of the first row 6 is pressed against the corner 50c at the same position as (1) shown in fig. 7, the tip 6a of the first row 6 is along the reference line L ₁ The direction shortens and is concentrated at the corner 50c, and the three second rows 7 are along the straight line L ₉₀ The front end 7a of one second row 7 of the arrangement is also centred at the corner 50c.

In addition, three second columns 7 along a straight line L ₄₅ 、L ₁₃₅ The leading ends 7a, 7a of the two second rows 7 arranged in this manner are also connected to each other in an arc shape, and are concentrated at the corner 50c.

Therefore, the tip 6a and all the tips 7a are concentrated at the corner 50c, and dust and the like accumulated at the corner 50c can be swept out. Then, the swept-out dust and the like are sucked in by the two flexible tubes 4 opening to the outside of the corner 50c and the two flexible tubes 4 opening to the inside of the corner 50c.

Further, at a position other than (1) shown in fig. 7, the tip 6a and all the tips 7a can be freely deformed in accordance with the shape of the corner 50c, and therefore, they can sweep out dust and the like accumulated in the corner 50c, and the swept-out dust and the like are sucked in from the four flexible tubes 4 in total outside and inside the corner 50c. Therefore, the hole 50 can be cleaned quickly and easily by the vacuum cleaner nozzle 1C without changing the gripping manner. The operation and effect of the other dust collector nozzle 1C are the same as those of the dust collector nozzle 1 of the embodiment.

The vacuum cleaner nozzle of the present invention is not limited to the structure shown in the embodiments. For example, the distal end surface 3 of the main body 2 may be divided into the first row 6 and the second row 7 having non-uniform areas around the intersection O, instead of being divided into the first row and the second row radially and having uniform areas. Instead of implanting a plurality of brush bunches 5c provided on the distal end surface 3, the brushes 5 may be formed of bristle bunches that are implanted in a narrow rectangular region without gaps.

And, the flexible pipe 4 of the dust collector nozzle 1 is in the subarea S ₁ ～S ₄ More than one of the elements may be provided, or the same number may be provided. In addition, in the cleaner nozzle 1A, the end face E is viewed from a direction orthogonal to the G direction in fig. 9 (b) ₉ The shape may be linear, in addition to a slightly upwardly convex curved line.

The angled portions 8 of the trial product of the vacuum cleaner nozzle 1 and the angled portions 10 of the vacuum cleaner nozzle 1A may be formed in the cross-sections of the flexible tubes 4 and 9 in the shape of an isosceles triangle or a drop instead of a sector.

In addition, the vacuum cleaner nozzles 1, 1A, 1B, and 1C can be used for cleaning objects other than the holes 50 and 52, for example, a floor surface, and can also be used for cleaning the inside of a storage rack for storing books, tableware, clothes, and the like, the inside of a tool box for storing various tools, corners of a room, doors, ceilings, and the like.

Industrial applicability

The vacuum cleaner nozzle of the present invention can be utilized as a vacuum cleaner nozzle: the vacuum cleaner nozzle is connected with a suction pipe of a vacuum cleaner, can efficiently remove dust and the like accumulated at the bottom and corners of an object to be cleaned, and can reduce labor and time for cleaning.

Description of the symbols

1. 1A, 1B, 1C-vacuum cleaner nozzle, 2-main body, 2A-connection port, 2A-lower part, 2B-upper part, 3-front end face, 3 a-periphery, S ₁ 、S ₂ 、S ₃ 、S ₄ -partition, 4S ₁ 、4S ₂ 、4S ₃ 、4S ₄ -flexible tube, 4 a-suction inlet, 4 b-fixed part, E ₄ -end face, 5-brush, 5 a-tip, 5 b-base end, 5 c-brush bouquet, 6-first row, 6 a-tip, 6 b-one end, 6 c-the other end, 7-second row, 7 a-tip, 7 b-one end, 8-angled portion, 9-flexible tube, 9 a-suction port, 9 b-fixed portion, E ₉ End face, 10-having corner, K ₁ 、K ₂ Corner, 50, 52-hole, 50a, 52 a-bottom, 50b, 52 b-wall, 50c, 52 c-corner, 52 d-four corner, 52 e-wall corner, 51-plane, L ₁ Reference line, L ₂ Orthogonal line, L ₃ -direction of travel.

Claims (4)

1. A vacuum cleaner nozzle (1, 1A) comprising a main body (2) having a connection port (2 a) connected to a suction pipe of a vacuum cleaner, a plurality of flexible pipes (4, 9) projecting forward from a front end surface (3) of the main body (2), and a brush (5), wherein the vacuum cleaner nozzle (1, 1A) is used for cleaning holes (50, 52),

the hole parts (50, 52) are provided with bottom parts (50 a, 52 a), wall parts (50 b, 52 b), and corners (50 c, 52 c) of the bottom parts (50 a, 52 a) and the wall parts (50 b, 52 b),

the brush (5) is provided with a reference line (L) along the front end face (3) ₁ ) One of arrangementA first row (6) and a second row (7) intersecting the first row (6) at an intersection point (O) and arranged orthogonally with respect to the first row (6),

the front end surface (3) is divided into the first row (6) and the second row (7), and a plurality of sections (S) are formed around the intersection point (O) ₁ 、S ₂ 、S ₃ 、S ₄ )，

The flexible tubes (4, 9) have suction ports (4 a, 9 a) opened at the front ends thereof and fixing portions (4 b, 9 b) fixed to the front end surface (3), and are disposed in all of the plurality of sections (S) ₁ 、S ₂ 、S ₃ 、S ₄ )，

The first row (6) or the second row (7) is bent, the leading ends (6 a, 7 a) of the first row (6) or the second row (7) are gathered in a row along the corners (50 c, 52 c), and at least two of the plurality of suction ports (4 a, 9 a) can be opened with the leading ends (6 a, 7 a) of the first row (6) and the second row (7) gathered in a row interposed therebetween, so that the maximum length (L) of the flexible tubes (4, 9) from the leading end surface (3) is the maximum length (L) ₄ 、L ₉ ) Is longer than the length (L) of the brush (5) from the front end face (3) ₅ ) Short.

2. The vacuum cleaner nozzle (1A) according to claim 1,

a corner part (10) is formed at least in a part of the flexible pipe (9) near the fixing part (9 b) in the longitudinal direction of the flexible pipe (9), and the corner part (10) at least has a corner part (K) provided near the intersection (O) on the cross section of the flexible pipe (9) ₁ )。

3. Vacuum cleaner nozzle (1, 1A) according to claim 1 or 2,

the end faces of the suction ports (4 a, 9 a) are parallel to the distal end face (3) over the entire circumference thereof, or are inclined so as to be closer to the distal end face (3) in a direction from the intersection (O) on the distal end face (3) toward the circumferential surface (3 a) of the distal end face (3).

4. Vacuum cleaner nozzle (1, 1A) according to any of claims 1-3,

the plurality of flexible tubes (4, 9) each have a shape in which the inner space thereof becomes narrower from the fixing portions (4 b, 9 b) toward the suction ports (4 a, 9 a).

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