JP2011172739A - Suction device for vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction device for vacuum cleaners capable of effectively cleaning a narrow part on a floor surface. <P>SOLUTION: In a housing 10 of this suction device 1 for vacuum cleaners, a sub-suction port 13 of the front face 10B is opened/closed by a shutter 14. When a user wants to clean a narrow part on a floor surface X, the housing 10 is inverted such that the sub-suction port 13 faces the floor surface X, and the shutter 14 is opened. The shutter 14 has intake slots 20 which are adapted to communicate with the housing 10 when the shutter is opened. Accordingly, dust on the narrow part is sucked from the sub-suction port 13 to the interior of the housing 10, so that the dust on a part facing the shutter 14 in the narrow part can be sucked in the interior of the housing 10 from the intake slots 20. A flap member 21 provided in the interior of the housing 10 is operated in conjunction with the opening of the shutter 14 to guide the air and dust flowing from the intake slots 20 to a bend pipe 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner suction tool.

  Conventionally, the vacuum cleaner suction tool has a wide housing, and a suction port is formed on the bottom surface of the housing (see Patent Document 1). By moving the vacuum cleaner suction tool on the floor surface with the suction port on the bottom of the housing facing the floor surface, dust on the floor surface is taken into the housing from the suction port. Cleaning is performed.

Japanese Patent Laid-Open No. 2004-16606

In the vacuum cleaner suction tool of Patent Document 1, if there is nothing and a wide floor surface, the vacuum cleaner suction tool can be cleaned without any problem by simply moving the vacuum cleaner suction tool on the floor surface.
However, since the vacuum cleaner suction tool is difficult to enter into a narrow portion of the floor between the furniture and the furniture, it is difficult to clean the narrow portion with the vacuum cleaner suction tool.
However, since a large amount of dust may accumulate in such a narrow portion, the narrower portion needs to be carefully cleaned.

  The present invention has been made under such a background, and an object thereof is to provide a vacuum cleaner suction tool capable of effectively cleaning a narrow portion of a floor surface.

  According to the first aspect of the present invention, there is provided a housing in which a main suction port is formed on a bottom surface and a sub suction port is formed on a front surface, one end is connected to the housing, and the other end projects rearward from the housing. A bend pipe that can be connected to the main body of the vacuum cleaner and is guided to guide air and dust flowing into the housing from the main suction port and the sub suction port to the main body of the vacuum cleaner, and is rotatably provided in the housing. A rotary brush that faces the main suction port and the sub suction port, and a shutter that covers the sub suction port so as to be openable and closable, and that is formed to communicate with the inside of the housing through the shutter in the open state. A shutter having a hole, provided in the housing, movable according to the opening and closing of the shutter, in conjunction with the opening of the shutter Characterized in that it comprises a flap member for guiding the air and dust flowing from said intake hole into one end of the bend pipe, an electric vacuum cleaner suction tool.

  The invention according to claim 2 is characterized in that the flap member is adjacent to the intake hole from the downstream side in the direction in which the incoming air flows from the intake hole to one end of the bend pipe. The vacuum cleaner suction tool according to claim 1.

  According to invention of Claim 1, in the housing of the suction tool for vacuum cleaners, the main suction inlet is formed in the bottom face and the sub suction inlet is formed in the front surface. A shutter covers the auxiliary suction port so that it can be opened and closed. Then, one end of the bend pipe is connected to the housing, and the other end of the bend pipe protrudes rearward from the housing and can be connected to the main body of the vacuum cleaner. A rotating brush is rotatably provided in the housing, and the rotating brush faces the main suction port and the sub suction port.

  When the vacuum cleaner suction tool is moved on the floor surface with the main suction port on the bottom surface of the housing facing the floor surface, the suction force generated in the main body of the vacuum cleaner acts on the main suction port. Thereby, dust on the floor surface is sucked into the housing from the main suction port together with air, and is guided to the main body of the vacuum cleaner by the bend pipe. Here, if the shutter covers the sub suction port, the suction force can be applied only to the main suction port. Moreover, since the rotating brush scoops up dust on the floor surface from the main suction port, the dust can be effectively flowed into the housing from the main suction port.

  On the other hand, when you want to clean a narrow part such as between the furniture on the floor surface, first, the housing (vacuum suction tool) so that the sub-suction port faces the floor surface instead of the main suction port Change the posture. Then, the housing which is generally wide and flat vertically is inverted, and the facing area of the housing with respect to the floor surface is reduced. Thereby, the housing can be inserted into the narrow portion described above. Also, the shutter is opened in response to the housing being inverted.

  When the inverted housing (vacuum cleaner suction tool) is inserted into a narrow part, the suction force described above acts on the sub-suction port, so that dust in the narrow part together with air enters the housing from the sub-suction port. And is guided to the main body of the vacuum cleaner by a bend pipe. Thereby, the narrow part in a floor surface can be cleaned. Moreover, since the rotating brush scoops up dust on the floor surface (narrow portion) from the sub suction port, it is possible to effectively allow dust to flow into the housing from the sub suction port.

  Here, the shutter has an intake hole formed so as to communicate with the inside of the housing through the shutter in the opened state. Therefore, in addition to sucking the dust in the narrow part from the sub-intake port into the housing, the dust in the part facing the shutter in the narrow part (part where it is difficult to suck in the dust in the sub-suction port) from the intake hole It can also be sucked into the housing. Thereby, the narrow part in a floor surface can be cleaned effectively.

  Further, a flap member is provided in the housing so that it can move according to the opening and closing of the shutter. The flap member moves air and dust flowing in from the intake hole in conjunction with the opening of the shutter. Lead to one end. That is, a smooth flow of air and dust from the intake hole toward one end of the bend pipe in the housing is ensured by the flap member. For this reason, air and dust that flow into the housing from the intake hole are successively sent to one end of the bend pipe by the flap member. The suction can be effectively sucked into the housing. Thereby, the narrow part in a floor surface can be cleaned more effectively.

  According to the second aspect of the present invention, the flap member is located adjacent to the intake hole from the downstream side in the direction in which the inflow air flows from the intake hole to one end of the bend pipe. The air and dust flowing in from can be effectively guided to one end of the bend pipe.

(A) is a right side view of the vacuum cleaner suction tool 1 and the telescopic pipe 2 according to an embodiment of the present invention, and shows the vacuum cleaner suction tool 1 in a normal posture. (b) has shown the state which changed the suction tool 1 for vacuum cleaners into the inverted posture in (a). It is right sectional drawing of the vacuum cleaner suction tool 1 in a normal attitude | position. FIG. 2 shows a state where the shutter 14 is opened. It is right side sectional drawing of the vacuum cleaner suction tool 1 in an inverted posture. It is the figure which looked at the vacuum cleaner suction tool 1 in the state of FIG. 4 from the sub suction port 13 side. It is the figure which looked at the vacuum cleaner suction tool 1 in the state of FIG. 4 from the main suction inlet 12 side. FIG. 6 shows a state where the rotating brush 17 is omitted.

Embodiments of the present invention will be specifically described below with reference to the drawings.
1A is a right side view of the vacuum cleaner suction tool 1 and the telescopic pipe 2 according to an embodiment of the present invention, and the vacuum cleaner suction tool 1 is in a normal posture. (B) has shown the state which changed the suction tool 1 for vacuum cleaners into the inverted posture in (a).
Below, the front-back, left-right direction of the suction tool 1 is prescribed | regulated on the basis of the attitude | position (normal attitude | position) of the vacuum cleaner suction tool 1 (henceforth "suction tool 1" only) in Fig.1 (a). In FIG. 1A, the left side is the front side, the right side is the rear side, the back side is the left side, and the near side is the right side. Moreover, the left-right direction is synonymous with the width direction.

  One end of an expandable pipe 2 that can change the overall length by expanding and contracting is connected to the suction tool 1, and a hose 4 is connected to the other end of the expandable pipe 2 via an operation unit 3. The operation unit 3 includes a cylindrical connection cylinder 5 that connects the expansion pipe 2 and the hose 4, and a main grip 6 and a sub grip 7 that are attached to the outer peripheral surface of the connection cylinder 5. The hose 4 is connected to a vacuum cleaner main body (not shown) incorporating an electric blower.

  The suction tool 1 can change its posture into a normal posture shown in FIG. 1A and an inverted posture shown in FIG. In the state where the suction tool 1 is in the normal posture, for example, in FIG. 1A, the main grip 6 is twisted so that the main grip 6 located above the sub grip 7 is located below the sub grip 7 in the main grip. Change from 6 to subgrip 7. Then, the telescopic pipe 2 is slightly raised, and at this time, the rear end side of the suction tool 1 is lifted, so that the posture of the suction tool 1 changes to an inverted posture.

Next, the suction tool 1 will be described.
FIG. 2 is a right side sectional view of the suction tool 1 in a normal posture. FIG. 3 shows a state in which the shutter 14 is opened in FIG. FIG. 4 is a right side cross-sectional view of the suction tool 1 in an inverted posture.
Referring to the normal posture suction tool 1 shown in FIG. 2, the suction tool 1 mainly includes a housing 10 and a bend pipe 11.

  The housing 10 is in the shape of a box that is long (wide) in the width direction and flat and flat in the vertical direction. A main suction port 12 that is long in the width direction is formed on the front side of the bottom surface 10 </ b> A of the housing 10, and a sub suction port 13 that is long in the width direction is formed on the front surface 10 </ b> B of the housing 10. The sub suction port 13 is continuous from the front side with respect to the main suction port 12. The main suction port 12 and the sub suction port 13 communicate with the inside of the housing 10.

  A shutter 14 is provided on the front surface 10 </ b> B of the housing 10. The shutter 14 has a plate shape that is long in the width direction. The shutter 14 is curved so as to bulge in an arc shape toward the front upper side when viewed from the width direction. Convex portions 15 that protrude forward and upward are integrally provided at both ends in the width direction of the front end of the shutter 14. The shutter 14 covers the sub suction port 13 from the front upper side so as to be opened and closed. In FIG. 2, the shutter 14 closes the sub suction port 13, and in FIG. 3, the shutter 14 is opened to expose the sub suction port 13 to the front side. In the opened shutter 14, the rear portion (referred to as a hidden portion 14 </ b> A) is accommodated in the housing 10 so as to be hidden under the front end portion of the top wall 10 </ b> C of the housing 10.

Here, the shutter 14 is biased by a biasing member (a spring or the like) so as to close. Therefore, as shown in FIG. 3, by pressing the convex portion 15 against the wall Y, the shutter 14 can be opened against the urging force of the urging member. Conversely, when the convex portion 15 is separated from the wall Y, the shutter 14 is quickly closed (see FIG. 2).
Referring to FIG. 2, a connecting cylinder 16 is attached to the center of the rear surface of the housing 10 in the width direction (see the hatched portion configured with a diagonal line extending to the lower right in FIG. 2). The connecting cylinder 16 has a substantially cylindrical shape having a central axis extending in the front-rear direction, is inserted through the rear surface of the housing 10 from the rear, and is supported by the housing 10 so as to be rotatable about the central axis described above. , Part of the housing 10. The inside of the connection cylinder 16 communicates with the housing 10. The rear end surface of the connecting tube 16 and one place on the outer peripheral portion are continuously cut out to form a cutout portion 16A.

The bend pipe 11 is long in the front-rear direction in FIG. 2, and its front end 11A (one end) is formed in a substantially spherical shape. The front end 11A of the bend pipe 11 is inserted into the cutout portion 16A of the connection cylinder 16 of the housing 10 from behind, whereby the bend pipe 11 is supported by the connection cylinder 16 (housing 10).
Specifically, in the bend pipe 11, the front end 11 </ b> A is connected to the housing 10, and the rear end 11 </ b> B (the other end) protrudes rearward from the housing 10. In this state, the bend pipe 11 is rotatable with respect to the connecting cylinder 16 with the front end 11A as a fulcrum. In FIG. 2, the bend pipe 11 is rotatable up and down. Since the connection tube 16 is rotatable about a central axis extending in the front-rear direction, the bend pipe 11 is centered in the front-rear direction together with the connection tube 16 while rotating with respect to the connection tube 16. It can be rotated around an axis.

The inside of the bend pipe 11 communicates with the inside of the housing 10 through the inside of the connection cylinder 16. Since the rear end 11B of the bend pipe 11 is connected to the above-described telescopic pipe 2 (see FIG. 1), the main body of the electric vacuum cleaner (not shown) via the telescopic pipe 2, the hose 4 (see FIG. 1), and the like. Connected to.
A rotating brush 17 is provided in the housing 10. The rotating brush 17 includes a substantially cylindrical core body 18 that is long in the width direction and is rotatably supported by the left and right side walls of the housing 10, and brush bristles 19 that are planted on the outer peripheral surface of the core body 18. Yes. In the rotating brush 17, the brush bristles 19 face both the main suction port 12 and the sub suction port 13. The rotating brush 17 rotates counterclockwise in a right side view when receiving a driving force from a motor or the like (not shown).

  When the electric vacuum cleaner main body (not shown) is operated during cleaning, an electric blower (not shown) of the electric vacuum cleaner main body (not shown) generates a suction force. It acts on the inside of the housing 10. As a result, a suction force also acts on the main suction port 12 of the bottom surface 10 </ b> A of the housing 10, so that air outside the housing 10 is sucked into the housing 10 from the main suction port 12.

  Therefore, if the suction tool 1 is moved on the floor surface X with the main suction port 12 facing the floor surface X, dust on the floor surface X is sucked into the housing 10 from the main suction port 12. It rides on the air and is sucked into the housing 10 from the main inlet 12 (see thick solid arrow). Thereafter, the dust and air flowing into the housing 10 are guided to the main body of the vacuum cleaner (not shown) by the bend pipe 11 via the telescopic pipe 2 and the hose 4 (see FIG. 1). It is stored in a vacuum cleaner body (not shown). Here, since the shutter 14 is closed and covers the sub suction port 13, the suction force can be applied only to the main suction port 12. Further, since the rotating rotary brush 17 scoops up dust on the floor surface X from the main suction port 12, the dust can effectively flow into the housing 10 from the main suction port 12.

  As shown in FIG. 3, if the shutter 14 opens the sub suction port 13, the aforementioned suction force acts on the sub suction port 13, so that dust can be sucked into the housing 10 from the sub suction port 13. . In FIG. 3, since the sub suction port 13 faces the wall Y by opening the shutter 14, dust adhering to the wall Y can be sucked into the housing 10 from the sub suction port 13 (see thick broken line arrows). ). Dust and air sucked (inflowed) into the housing 10 from the sub suction port 13 are guided to the main body of the vacuum cleaner (not shown) by the bend pipe 11 as in the case of the main suction port 12. Here, since the bristle 19 which faces the sub suction port 13 in the rotating rotary brush 17 scrapes the dust on the wall Y into the sub suction port 13, the wall Y can be efficiently cleaned.

  Further, as shown in FIG. 4, the housing 10 (the entire suction tool 1) is arranged so that the sub suction port 13 of the front surface 10 </ b> B faces the floor surface X from above instead of the main suction port 12 of the bottom surface 10 </ b> A of the housing 10. Invert. The posture of the suction tool 1 at this time is the above-described inverted posture (see also FIG. 1B). When the suction tool 1 is set to the inverted posture, the above-described convex portion 15 comes into contact with the floor surface X and is pressed from below to open the shutter 14.

  When the suction tool 1 is in an inverted posture, in the housing 10 that is wide and flat in the vertical direction in the normal posture (see FIGS. 2 and 3), the sub suction port 13 side is the bottom surface and the bend pipe 11 side is the top surface. As a result, the housing 10 becomes thinner in the front-rear direction (horizontal direction) (the facing area of the housing 10 with respect to the floor surface X is reduced). Therefore, the housing 10 can be inserted into a narrow portion such as between furniture.

  When the inverted housing 10 (suction tool 1) is inserted into a narrow portion, the suction force described above acts on the sub suction port 13, so that dust in the narrow portion together with air passes from the sub suction port 13 to the housing 10. It is sucked in (see the thick broken arrow) and guided to the main body of the vacuum cleaner (not shown) by the bend pipe 11. Thereby, the narrow part in the floor surface X can be cleaned. Further, since the rotating rotary brush 17 scoops up dust on the floor surface X (narrow portion) from the sub suction port 13, the dust can be effectively flowed into the housing 10 from the sub suction port 13.

FIG. 5 is a view of the suction tool 1 in the state of FIG. 4 as viewed from the sub suction port 13 side.
Here, in a state where the suction tool 1 is in the inverted posture, the shutter 14 in the opened state has a portion (referred to as a facing portion 14B) facing the floor surface X. With reference to FIG. 5, intake holes 20 penetrating the opposing portion 14 </ b> B are formed on both sides of the opposing portion 14 </ b> B in the width direction. Each of the left and right intake holes 20 is elongated in the width direction.

FIG. 6 is a view of the suction tool 1 in the state of FIG. 4 as viewed from the main suction port 12 side. FIG. 7 shows a state in which the rotating brush 17 is omitted in FIG.
When the rotating brush 17 is removed in the state of FIG. 6, as shown in FIG. 7, the inside of the housing 10 and the inner surface of the top wall 10 </ b> C (the surface facing the housing 10) are exposed from the main suction port 12. A flap member 21 is provided on the inner surface (inside the housing 10) of the top wall 10C. The width direction position of the flap member 21 is a position corresponding to the space between the left and right intake holes 20.

The flap member 21 has a thin plate shape that is long in the width direction. A protrusion 22 that protrudes toward the top wall 10C is integrally provided at a substantially center in the width direction of the side surface of the flap member 21 that faces the top wall 10C (see FIG. 2). The protrusion 22 has a substantially trapezoidal shape that becomes narrower toward the top wall 10C when viewed from the width direction (see FIG. 2).
The top wall 10 </ b> C is provided with a pair of shaft portions 23 that sandwich the end portion of the flap member 21 on the side of the auxiliary suction port 13 from the width direction, and the left and right shaft portions 23 are connected to the auxiliary suction port 13 of the flap member 21. It is inserted through the end on the side. Accordingly, the flap member 21 can swing around the shaft portion 23. Specifically, the flap member 21 includes an approach position where the protrusion 22 approaches the top wall 10C (see FIG. 2), and a separation position where the protrusion 22 moves away from the top wall 10C as compared to the approach position (see FIG. 3). Can swing between. A torsion spring 24 is attached to the right shaft portion 23 in FIG. 7, and this torsion spring 24 urges the flap member 21 to swing to the approach position.

  Then, when the suction tool 1 is changed from the normal posture (see FIG. 2) to the inverted posture shown in FIG. 4 as described above, the hidden portion 14A described above and the top wall 10C of the housing 10 in the shutter 14 that opens at that time. The protrusion 22 of the flap member 21 at the approaching position is pushed while entering the gap with the flap member 21. Accordingly, the flap member 21 swings toward the separation position so that the protrusion 22 is separated from the top wall 10C. Then, as shown in FIG. 4, when the shutter 14 is fully opened, the flap member 21 reaches the separated position.

When the shutter 14 is closed on the contrary, the hidden portion 14A is detached from between the top wall 10C and the flap member 21 and does not press the projection 22, so that the flap member 21 is provided with a torsion spring 24 (see FIG. 7). Return to the approach position by the force (see FIG. 2). That is, the flap member 21 can move to the separation position and the approach position according to the opening / closing of the shutter 14.
When the suction tool 1 is in the inverted posture and the flap member 21 is swung to the separated position, a gap Z is formed between the flap member 21 (excluding the protrusion 22) and the hidden portion 14A of the shutter 14. Is done. With reference to the state of FIG. 4, the gap Z communicates from the lower side with respect to the connecting cylinder 16 (see FIG. 2), and through the opening hole 20 of the opened shutter 14, the floor surface X (narrow as described above). Part) from above. If the intake hole 20 is used as a reference instead of the gap Z, the intake hole 20 communicates with the gap Z in the housing 10 through the shutter 14 when the shutter 14 is open.

  Therefore, when the suction force described above is generated in this state, the suction force acts not only on the main suction port 12 and the sub suction port 13 but also on the intake hole 20 via the gap Z. As a result, dust and air on the floor surface X (the narrow portion described above, the same applies hereinafter) are sucked into the housing 10 from the main suction port 12 and the sub suction port 13 (see thick solid arrow and thick broken line arrow). Dust and air on the floor surface X are sucked into the housing 10 from the intake hole 20 (see the thick one-dot chain line arrow).

  In this way, in addition to sucking the dust in the narrow portion described above into the housing 10 from the sub suction port 13, the portion facing the shutter 14 in the narrow portion (the sub suction portion 14B because the facing portion 14B of the shutter 14 is obstructive) It is also possible to suck the dust in the portion of the mouth 13 where it is difficult to suck dust into the housing 10 from the intake hole 20. Thereby, the narrow part in the floor surface X can be cleaned effectively.

  Then, the dust and air sucked into the housing 10 from the intake hole 20 passes through the gap Z described above and is connected to the connecting cylinder 16 (in other words, the bend by the flap member 21 as shown by a thick one-dot chain line arrow). It is led to the front end 11A) of the pipe 11, and then guided to the bend pipe 11 and sent to the cleaner body (not shown). In this way, the flap member 21 moves to the separation position in conjunction with the opening of the shutter 14, and guides the air and dust flowing in from the intake hole 20 to the front end 11 </ b> A of the bend pipe 11.

  That is, a smooth flow (bypass flow path) of air and dust from the intake hole 20 toward the front end 11 </ b> A of the bend pipe 11 in the housing 10 is ensured by the flap member 21. For this reason, air and dust flowing into the housing 10 from the intake hole 20 are successively sent to the front end 11A of the bend pipe 11 by the flap member 21, so that dust is collected at the sub suction port 13 in the narrow portion described above. It is also possible to effectively suck the dust that is difficult to be sucked into the housing 10 through the hole 20. Thereby, the narrow part in the floor surface X can be cleaned more effectively.

Here, the flap member 21 is located downstream of the intake hole 20 in the direction in which air (inflow air) and dust are directed from the intake hole 20 to the front end 11A of the bend pipe 11 (see the thick one-dot chain line arrow). Is adjacent to Therefore, the flap member 21 can effectively guide the air and dust flowing from the intake hole 20 to the front end 11 </ b> A of the bend pipe 11.
If the shutter 14 does not have the intake hole 20, the above-described suction force acts on the main suction port 12 more than necessary, and accordingly, dust in a narrow portion of the floor surface X is smoothly transferred from the sub suction port 13. Difficult to inhale. Therefore, if there is the intake hole 20, the suction force does not act on the main suction port 12 more than necessary, and accordingly the sub suction port 13 and the intake hole 20 are greatly affected. Can be smoothly sucked from the auxiliary suction port 13 and the intake hole 20.

  When the suction tool 1 is in a normal posture and dust on the floor surface X is sucked from the main suction port 12 (see FIG. 2), air is sucked into the housing 10 from the intake hole 20 as well. The suction force at the suction port 12 is not reduced. Rather, it is possible to suppress the suction force at the main suction port 12 from becoming stronger than necessary by sucking air from the intake hole 20.

  The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner suction tool 10 Housing 10A Bottom surface 10B Front surface 11 Bend pipe 11A Front end 11B Rear end 12 Main suction port 13 Sub suction port 14 Shutter 17 Rotating brush 20 Intake hole 21 Flap member

Claims (2)

A housing in which a main suction port is formed on the bottom surface and a sub suction port is formed on the front surface;
One end is connected to the housing, and the other end protrudes rearward from the housing and can be connected to a vacuum cleaner body. Air and dust flowing into the housing from the main suction port and the sub suction port Bend pipe to guide to the vacuum cleaner body,
A rotating brush which is rotatably provided in the housing and faces the main suction port and the sub suction port;
A shutter that covers the sub-suction opening so as to be openable and closable, and has a taking-in hole formed so as to communicate with the inside of the housing through the shutter in an open state;
A flap member that is provided in the housing and is movable according to opening and closing of the shutter, and guides air and dust flowing in from the intake hole to one end of the bend pipe in conjunction with opening of the shutter When,
A vacuum cleaner suction tool characterized by comprising:   2. The flap member according to claim 1, wherein the flap member is located at a position adjacent to the intake hole from the downstream side in a direction in which the incoming air flows from the intake hole to one end of the bend pipe. Vacuum cleaner suction tool.

Images