JP3858211B2 - Vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to, for example, a vacuum cleaner, and more particularly, to a structure of a floor brush that can reliably suck dust.
[0002]
[Prior art]
FIG. 15 is a longitudinal sectional view showing a floor brush of a conventional vacuum cleaner, for example, FIG. 16 is a perspective view showing a positional relationship of a hand operating part with respect to the floor brush, FIG. 17 is a perspective view showing the floor brush, and FIG. It is a perspective view which shows the state which made the axis line of the intake pipe parallel with respect to the floor brush. In the figure, reference numeral 1 denotes a floor brush of a vacuum cleaner having a rear wheel 1a and a front wheel 1b at the bottom, and a bumper 1c is attached to the front and side surfaces. A communication pipe 2 is connected to the floor brush 1 so as to be rotatable up and down, and has a bent portion 2a. Reference numeral 5 denotes a connection pipe connected to the communication pipe 2 so as to be rotatable in the circumferential direction, and a bent portion 5b is formed.
[0003]
26 is an intake pipe that is detachably connected to the connection pipe 5, 27 is a hand pipe that is detachably connected to the intake pipe 26, 28 is a hand operation unit that is detachably provided on the hand pipe 27, and 29 is a hand pipe 27 is a hose connected to 27. The intake pipe 26 is composed of two connectable pipes. The floor brush 1 includes an upper case and a lower case, and a rotating brush 30 that is driven by an air turbine or the like is provided therein.
[0004]
The conventional vacuum cleaner is configured as described above, and when the user of the vacuum cleaner reciprocates the floor brush 1 with the hand operation unit 28, the intake air connected to the communication pipe 2 via the connection pipe 5 is used. The pipe 26 is used with an inclination of an angle with respect to the floor surface 14. In addition, as shown in FIG. 16, with the front surface of the floor brush 1 orthogonal to the direction of the axis B of the intake pipe 26, the intake pipe 26 is reciprocated in the direction of the axis B to reciprocate the front surface of the floor brush 1. It is moved and cleaned. However, for example, when the left side surface of the floor brush 1 comes near the wall, in order to clean the floor surface 14 near the wall with a sufficient suction force, the front surface of the floor brush 1 is pressed against the wall and the floor brush 1 is parallel to the wall side. It is better to move to. In this case, when the hand operation unit 28 is twisted and rotated in a state orthogonal to the front surface of the floor brush 1 and the axis B direction of the intake pipe 26, the communication pipe 2 is connected to the intake pipe 26 and the connection pipe 5 integral with the hand pipe 27. Rotates and the communication pipe 2 moves upward relative to the floor brush 1. When the axis B of the intake pipe 26 does not move, the floor brush 1 rotates 90 °, the front surface of the floor brush 1 and the axis B of the intake pipe 26 become parallel, and the user has reciprocated the floor brush 1 until now. Since the front surface of the floor brush 1 is directed to the side surface of the user, which is a surface perpendicular to the moved direction, the user does not have to move, and the traveling direction of the floor brush 1 and the axis B of the intake pipe 26 Since the directions of the two coincide with each other, there is no fear of force escaping, and operation is easy and the wall can be cleaned efficiently.
[0005]
[Problems to be solved by the invention]
In the conventional vacuum cleaner as described above, the connecting pipe 5 is connected to the floor brush 1 so as to be rotatable up and down, and is connected to the communication pipe 2 bent at a right angle from the middle so as to be rotatable in the circumferential direction. Since the connecting pipe 5 is also bent at a right angle from the middle, the wind direction is forcibly changed at the bent portion, so that wind noise is generated as compared with a straight air path. Further, in the floor brush 1 in which the communication pipe 2 and the connection pipe 5 can be rotated by 180 °, it is difficult to wire the conductors, so that there are no electric parts (electric motors, LEDs, etc.) mounted thereon and the usability is poor.
[0006]
The present invention has been made to solve such problems, and enables the front surface of the floor brush to be directed to the side surface direction of the user without moving the user. The purpose of this is to reduce the amount of unpleasant wind generated by the collision of the wind in the communication pipe and improve the dust absorption performance. An object of the present invention is to provide a vacuum cleaner that can supply power from the main body of the vacuum cleaner via a conductor.
[0007]
[Means for Solving the Problems]
The present invention includes a communication pipe that is rotatably connected to a floor brush having a suction port on a lower surface, a connection pipe that is rotatably connected to the communication pipe in a circumferential direction thereof, and an intake air that is connected to the connection pipe In a vacuum cleaner having a pipe and a hand operating part, one end connected to the intake pipe and the other end connected to a hose, the communication pipe has an inlet of the floor brush at one end Forming an opening communicating with the other end, and providing a bent portion at the other end. The bent portion collides with the air sucked from the opening, and is perpendicular to the rotating surface of the communicating tube and the connecting tube. to form so as to be guided in the direction, and, on the outer peripheral portion of the bent portion is obtained by forming a double structure having a space therein.
[0008]
In addition, a communication pipe that is rotatably connected to a floor brush that incorporates electrical components, a connection pipe that is rotatably connected to the communication pipe in its circumferential direction, an intake pipe that is connected to the connection pipe, A hand pipe connected to the air intake pipe and having a hand operating part; and a hose connected to the hand pipe and provided with a conductor for supplying electric power to the electrical component; and the communication pipe is connected to the floor brush at one end. An opening that communicates with the suction port is formed, and a bent portion is provided at the other end. The bent portion collides with the air sucked from the opening and collides with the rotating surface of the communication tube and the connection tube. It formed so as to be guided in a direction perpendicular Te, and, on an outer peripheral portion of the bent portion, and a double structure having a space therein, placing a terminal portion of the conductor on the outer peripheral surface of the connecting pipe A connecting portion is provided, and the conductor is in a bent portion of the communication pipe. Is the outer peripheral portion routed along the of the space is one in which the conductor for connecting between at least the electrical components of the electric blower housed in the floor brush is disposed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 is a longitudinal sectional view showing a floor brush of a vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing the floor brush, FIG. 3 is an exploded view of a connecting pipe, and FIG. FIG. 5 is an exploded view of the connecting pipe, FIG. 6 is a bottom view of the floor brush, FIG. 7 is an explanatory view showing the operation of the safety device for the floor brush, and FIG. 8 is a bottom view showing the rotating surface of the communication pipe. is there.
[0010]
In the figure, reference numeral 1 denotes a floor brush of a vacuum cleaner having a suction port (not shown) on the lower surface and incorporating a rotating brush (not shown) and an electric motor (not shown) for driving the rotating brush. A wheel 1a and a front wheel 1b are provided. A communication pipe 2 is connected to the floor brush 1 so as to be rotatable in the vertical direction, and a bent portion 2a is formed at the other end. In addition, an opening 2b that communicates with the suction port is formed on the floor brush 1 side of the communication pipe 2, and a connecting portion 2c is provided on the bent portion 2a side. 3 is a communication pipe cover provided on the upper surface of the communication pipe 2, 4 is a space formed when the communication pipe cover 3 is attached, and when the communication pipe cover 3 is attached to the communication pipe 2, the vicinity of the bent portion 2 a is a space. 4 to form a double structure. As shown in FIG. 3, when the communication pipe cover 3 is attached to the communication pipe 2, the wall Y of the communication pipe 2 and the wall y of the communication pipe cover 3 are in contact with each other, and the wall X and the wall x are in contact with each other. ing. Reference numeral 5 denotes a connection pipe that is connected to the communication pipe 2 so as to be rotatable in the circumferential direction, and an intake pipe (not shown) is connected to the end portion 5a. A bent portion 5b is formed on the communication pipe 2 side. Reference numeral 6 denotes a connecting portion provided on the outer peripheral surface of the connecting pipe 5, and a terminal portion 8 of a lead wire 7 which is a conductor for supplying electric power to an electric component such as an electric motor in the floor brush 1 is disposed. A connection tube cover 9 is provided on the upper surface of the connection tube 5 so as to cover the lead wire 7 and the terminal portion 8, and is fixed to the connection tube 5 with a screw 10. When the connection pipe cover 9 is attached to the connection pipe 5, a space 4A communicating with the space 4 is formed, and the opening angle of the connecting portion between the space 4 and the space 4A is an angle at which the connection pipe 5 can be rotated (this embodiment). , 180 degrees).
[0011]
Reference numeral 11 denotes a stopper provided in the communication pipe 2, and reference numeral 12 denotes a stopper provided in the connection pipe 5. The stoppers 11 and 12 restrict the rotation of the connection pipe 5. The stoppers 11 and 12 are provided in the vicinity of the rotation surface A of the communication pipe 2 and the connection pipe 5 and at positions where the lead wires 7 are not disconnected by being touched. Reference numeral 13 denotes a reinforcing rib provided on the connecting portion 2c of the communication pipe 2 and is provided for reinforcement to prevent deformation of the communication pipe cover 3 when it hits an obstacle during cleaning. Further, the rotation surface A of the communication pipe 2 and the connection pipe 5 is inclined with respect to the floor surface 14 and is formed in parallel with the axis B of the connection pipe 5. Further, the communication pipe 2 and the connection pipe 5 are connected so that a predetermined distance E can be maintained between the floor surface 14 and the bottom surface of the connection pipe 5 so as not to damage the floor surface during cleaning.
[0012]
A safety device 15 is provided at the bottom of the floor brush 1 and controls the motor so that the rotating brush does not rotate when the floor brush 1 is lifted or turned over. The safety device 15 includes a wheel 16, an axle 17, a bearing 18 having a slope, a spring, an iron ball, and the like. As shown in FIG. 7, if the safety device 15 is not placed on the floor surface 14, the safety device 15 projects to the floor surface side. The rotation of the electric motor in 1 is stopped. In addition, since the bearing 18 is formed with an inclined surface, even if an obstacle hits the side of the safety device 15, the bearing 18 jumps up without being caught by the obstacle and is not damaged.
[0013]
Next, the usage method of the vacuum cleaner of Embodiment 1 is demonstrated.
As in the conventional example, when the user of the vacuum cleaner reciprocates the floor brush 1 while holding the hand operating part, the communication pipe 2 is used with an inclination of an angle that is obliquely above the floor surface. Further, the front surface of the floor brush 1 is moved back and forth for cleaning. For example, when the left side surface of the floor brush 1 comes near the wall, the floor brush 1 can be cleaned with a sufficient suction force to clean the floor surface near the wall. Since it is desirable to press the front face against the wall and move the floor brush 1 in parallel with the wall, the hand operating part is twisted counterclockwise around the axis of the intake pipe. Then, the communication pipe 2 rotates to the left with respect to the connection pipe 5 integrated with the intake pipe, and the communication pipe 2 rotates upward with respect to the floor brush 1, so that the continuous pipe 5 and the communication pipe 2 rotate. The surface A changes with respect to the floor surface 14, and the front surface of the floor brush 1 is located on the left side of the intake pipe and is parallel to the axis B of the connecting pipe 5.
[0014]
Further, when the right side surface of the floor brush 1 comes close to the wall, if the right operating portion is twisted to the right, the communication tube 2 rotates to the right with respect to the connection tube 5 and finally communicates with the connection tube 5. The rotation surface A of the pipe 2 is completely perpendicular to the floor surface, and the front surface of the floor brush 1 is located on the right side of the intake pipe and is parallel to the axis B of the connection pipe 5.
[0015]
By this operation, the user does not have to move, and the traveling direction of the floor brush 1 and the axial direction of the connecting pipe 5 coincide with each other, so that there is no risk of force escaping, and the operation is easily and efficiently cleaned at the wall. Can do.
[0016]
As shown by the arrow in FIG. 1, the flow of air sucked from the opening 2 b communicating with the suction port of the floor brush 1 hits the bent portion 2 a of the communication pipe 2 and is forcibly bent and connected to the connection pipe. 5 is sucked into the cleaner body. A wind noise is generated when air hits the bent portion 2a of the communication pipe 2, but in the first embodiment, the bent portion 2a has a double structure, so that the wind noise generated by the space 4 is reduced. By constituting the double structure mainly on the outer periphery of the bent portion 2a, a silencing effect can be obtained without providing a useless space in the height direction.
[0017]
In addition, although Embodiment 1 demonstrated the vacuum cleaner provided with the electrical component etc. in the floor brush 1, the same effect can be acquired also about what is not equipped with the electrical component.
[0018]
Further, at the boundary portion in the air passage between the communication pipe 2 and the connection pipe 5, the shape of the end of the communication pipe 2 is not uniform, and R is attached to the sliding angle. That is, as shown in FIG. 8, the connection portion 2c of the communication pipe 2 has an R structure at the part a and an edge structure (or a small R structure) at the part b, and smoothly changes between a and b. It is formed to do. It is clear from experiments that the silencing effect is further improved by this configuration.
[0019]
Embodiment 2. FIG.
9 is a top view showing the connecting pipe and the connecting pipe of the floor brush according to the second embodiment of the present invention, FIG. 10 is a top view showing the case where the connecting pipe is twisted to the right, and FIG. 11 is a twisted connecting pipe to the left. It is a top view which shows the state.
In the second embodiment, the wiring of the lead wire in the case where the floor brush 1 includes an electrical component will be specifically described, but the other configuration is the same as that of the first embodiment.
[0020]
In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of the components is omitted. The lead wire 7 provided on the outer peripheral surface of the connecting pipe 5 enters the floor brush 1 through the space 4A and the space 4 as shown in FIGS. The space 4 serving as a silencing space also serves as a storage space for the lead wires 7. In addition, the lead wire 7 is wired along the outer peripheral portion of the inner wall of the bent portion 2a of the communication pipe 2, and then is wired along the bent portion 2a. Wiring is provided between the connecting portion 6 and the bent portion 2a with a deflection. Further, as shown in FIG. 1, the wiring direction of the lead wire 7 is different between the connecting tube 5 side and the communicating tube 2 side, and is bent and wired according to the bent portions of the connecting tube 5 and the communicating tube 2. The space 4 and the space 4A are formed so that the connecting pipe 5 can rotate 180 °.
[0021]
Since the lead wire 7 is a collection of metal wires, it is vulnerable to bending. However, according to the second embodiment, it is possible to prevent the lead wire 7 from being stored without difficulty even if the connecting pipe 5 is rotated 180 °, and to prevent the lead wire 7 from being disconnected due to excessive force. Can greatly extend the lifespan.
[0022]
Embodiment 3 FIG.
FIG. 12 is a side view showing a state in which the electric vacuum cleaner according to Embodiment 3 of the present invention is housed, and FIG. 13 is an enlarged view showing the connecting portion of the connecting pipe. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of the components is omitted. In the third embodiment, the connection portion of the connecting pipe will be described, but the other configuration is the same as that of the first embodiment.
[0023]
In the figure, 19 is a vacuum cleaner body, 20 is a wheel provided on the vacuum cleaner body 19, 21 is an intake pipe connected to the connecting pipe 5, 22 is a recess provided on the lower surface of the vacuum cleaner body 18, and 23 is an extension. A protrusion formed in the tube 21 and housed in the recess 22. 6a is a groove formed in the U-shape of the upper opening formed in the connection portion 6, and the terminal portion 8 is installed from above. Reference numeral 24 denotes a holding rib for holding the lead wire 7. Although not shown, protrusions for holding the terminal portions 8 and the lead wires 7 are formed on the back surface of the connecting tube cover 9, thereby preventing rattling of the terminal portions 8 and the lead wires 7. Since the conventional connecting portion has a round hole, when the terminal portion 8 is inserted, a predetermined distance is required from the connecting portion 6 to the holding rib 24. However, the construction of the U-shaped groove makes it easy to attach the terminal portion 8, and the distance L can be shortened when the extension tube 21 is attached to the cleaner body 19. Can be realized.
[0024]
Further, as shown in FIG. 14, an LED 24 or a liquid crystal display 25 may be formed on the surface of the floor brush 1.
[0025]
【The invention's effect】
As described above, according to the present invention, the communication pipe rotatably connected to the floor brush having the suction port on the lower surface, the connection pipe rotatably connected to the communication pipe in the circumferential direction, and the connection In the vacuum cleaner comprising a suction pipe detachably connected to a pipe and a hose detachably connected to the suction pipe and having a hand operating part, the communication pipe has an inlet of the floor brush at one end Forming an opening communicating with the other end, and providing a bent portion at the other end. The bent portion collides with the air sucked from the opening, and is perpendicular to the rotating surface of the communicating tube and the connecting tube. Since a double structure having a space inside is formed on the outer peripheral portion of the bent portion, by twisting the hand operating portion, the axis of the intake pipe is formed. The front of the floor brush that was orthogonal to the axis of the intake pipe It can be changed almost in parallel, and even if the user does not move, not only the front of the user but also the side can be surely sucked in dust, and unpleasant noise due to wind noise can be reduced. There is an effect that can be.
[0026]
In addition, a communication pipe that is rotatably connected to a floor brush that incorporates electrical components, a connection pipe that is rotatably connected to the communication pipe in its circumferential direction, an intake pipe that is connected to the connection pipe, A hand pipe connected to the air intake pipe and having a hand operating part; and a hose connected to the hand pipe and provided with a conductor for supplying electric power to the electrical component; and the communication pipe is connected to the floor brush at one end. An opening that communicates with the suction port is formed, and a bent portion is provided at the other end. The bent portion collides with the air sucked from the opening and collides with the rotating surface of the communication tube and the connection tube. It formed so as to be guided in a direction perpendicular Te, and, on an outer peripheral portion of the bent portion, and a double structure having a space therein, placing a terminal portion of the conductor on the outer peripheral surface of the connecting pipe A connecting portion is provided, and the conductor is in a bent portion of the communication pipe. Since the conductor connecting between at least the electric parts of the electric blower housed in the floor brush is arranged in the space, the intake pipe is twisted by the hand operation part. It is possible to change the front surface of the floor brush that was orthogonal to the axis of the pipe approximately parallel to the axis of the intake pipe. In addition to the effect that dust can be reliably sucked and unpleasant noise due to wind noise can be reduced, an electrical component can be mounted in the floor brush, which improves usability.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a floor brush of a vacuum cleaner according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a floor brush according to the first embodiment of the present invention.
FIG. 3 is an exploded view showing the connecting pipe of the floor brush according to the first embodiment of the present invention.
FIG. 4 is a perspective view showing a connecting pipe of the floor brush according to the first embodiment of the present invention.
FIG. 5 is an exploded view of the connecting pipe of the floor brush according to the first embodiment of the present invention.
FIG. 6 is a bottom view of the floor brush according to the first embodiment of the present invention.
FIG. 7 is an explanatory diagram showing a floor brush safety device according to the first embodiment of the present invention.
FIG. 8 is a bottom view showing a rotating surface of the communication pipe.
FIG. 9 is a top view showing a connecting pipe and a connecting pipe of a floor brush of a vacuum cleaner that is a second embodiment of the present invention.
FIG. 10 is a top view showing a state where the connecting pipe of the floor brush according to the second embodiment of the present invention is twisted to the right.
FIG. 11 is a top view showing a state in which the connecting pipe of the floor brush according to the second embodiment of the present invention is twisted to the left.
FIG. 12 is a longitudinal sectional view showing a floor brush of a conventional vacuum cleaner showing a state in which the floor brush is housed in the vacuum cleaner body of the vacuum cleaner according to Embodiment 3 of the present invention.
FIG. 13 is an enlarged view showing a connecting portion of a connecting pipe of a floor brush according to a third embodiment of the present invention.
FIG. 14 is a perspective view showing a state where an LED and a liquid display are provided on the surface of the floor brush.
FIG. 15 is a longitudinal sectional view showing a floor brush of a conventional electric vacuum cleaner.
FIG. 16 is a perspective view showing a positional relationship of a hand operation unit with respect to a conventional floor brush.
FIG. 17 is a perspective view showing a conventional floor brush.
FIG. 18 is a perspective view showing a state in which the axis of the intake pipe is parallel to the conventional floor brush.
[Explanation of symbols]
1 floor brush, 2 communication pipe, 2a bent part, 2b opening, 2c connecting part,
3 communication pipe cover, 4 space, 4A space, 5 connecting pipe, 5a end,
5b bent part, 6 connecting part, 7 lead wire, 8 terminal part, 9 connecting pipe cover,
14 floor, 19 vacuum cleaner body, 21 intake pipe, 22 recess,
23 Projection, 24 LED, 25 Liquid crystal display, 26 Intake pipe,
27 hand pipe, 28 hand operating part, 29 hose, 30 rotating brush.

Claims (3)

A floor brush having a suction port on the lower surface, the opening communicating with the suction port at one end, the pivotally in the vertical direction communicating pipe having a connecting portion and the bent portion at the other side with respect to the floor brush A connection pipe connected at one end side, one end connected to the connecting portion of the communication pipe so as to be rotatable in the circumferential direction, and the other end connected to an intake pipe communicating with the cleaner body through a hose or the like. In the vacuum cleaner provided,
The bent portion of the communication pipe is formed so that the air sucked from the opening collides and is guided in a direction orthogonal to the rotation surface of the communication pipe and the connection pipe , and The vacuum cleaner characterized by having formed the double structure which has space in the outer peripheral part of a bending part.   The vacuum cleaner according to claim 1, wherein a double pipe structure having a space inside is formed by attaching a communication pipe cover to an outer peripheral portion of the bent portion.   The electric vacuum cleaner according to claim 1 or 2, wherein a conductor for connecting at least an electric part of an electric blower housed in a floor brush is disposed in the space.

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