JP2024045893A - Vacuum cleaner - Google Patents

Abstract

[Problem] To provide a vacuum cleaner that can be used in a variety of ways depending on the degree of dirt, etc. [Solution] The vacuum cleaner according to the present disclosure includes a hinge that connects the cleaner head and a pipe so that the pipe can rotate relative to the cleaner head. The vacuum cleaner can be used in a first usage mode in which the pipe is inclined in a first direction relative to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis, and a second usage mode in which the pipe is inclined in a second direction opposite to the first direction relative to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis. In the first usage mode, when the cleaner head advances in the second direction, the rotating brush rotates in a forward direction relative to the advancement direction while contacting the surface to be cleaned. In the second usage mode, when the cleaner head advances in the first direction, the rotating brush rotates in a reverse direction relative to the advancement direction while contacting the surface to be cleaned. [Selected Figure] Figure 1

Description

The present disclosure relates to a vacuum cleaner.

The following Patent Document 1 discloses a vacuum cleaner suction nozzle that is connected to communicate with a vacuum cleaner body that has a built-in electric blower, and that applies a suction airflow from a suction opening formed in a suction opening base to a floor surface to suck up dust on the floor surface, and that is characterized in that it is equipped with a floor surface rubbing member that advances and retreats into the suction opening of a suction opening base that has a suction opening on its bottom surface, and a connecting pipe joint that is provided on the suction opening base so that it can rotate in the forward and backward directions in order to connect a connecting pipe that connects the vacuum cleaner body, and that the floor surface rubbing member advances and retreats in conjunction with the rotation angle of the connecting pipe joint.

JP 2000-254047 A

The problem with the method disclosed in Patent Document 1 is that it is not necessarily easy to use the product appropriately depending on the degree of dirt.

The present disclosure has been made to solve the problems described above. An object of the present disclosure is to provide a vacuum cleaner that can be used appropriately depending on the degree of dirt.

The vacuum cleaner according to the present disclosure is a vacuum cleaner comprising a cleaner head having a rotating brush that rotates in one direction around a brush central axis parallel to the surface to be cleaned, a handle to be held by a user, a pipe provided between the cleaner head and the handle, and a hinge connecting the cleaner head and the pipe so that the pipe can rotate relative to the cleaner head around a hinge central axis parallel to the brush central axis. The vacuum cleaner can be used in a first usage form in which the pipe is inclined in a first direction relative to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis, and a second usage form in which the pipe is inclined in a second direction opposite to the first direction relative to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis. In the first usage form, when the cleaner head moves in the second direction, the rotating brush rotates in a forward direction relative to the moving direction and comes into contact with the surface to be cleaned, and in the second usage form, when the cleaner head moves in the first direction, the rotating brush rotates in a reverse direction relative to the moving direction and comes into contact with the surface to be cleaned.

According to the present disclosure, it is possible to provide a vacuum cleaner that can be used appropriately depending on the degree of dirt.

1 is a diagram showing a vacuum cleaner according to Embodiment 1. FIG. 1 is a diagram showing a vacuum cleaner according to Embodiment 1. FIG. 2 is a cross-sectional side view of the vicinity of a cleaner head included in the vacuum cleaner according to the first embodiment. FIG. FIG. 2 is a cross-sectional plan view of a cleaner head included in the vacuum cleaner according to the first embodiment. FIG. 2 is a cross-sectional side view of the vicinity of a cleaner head included in the vacuum cleaner according to Embodiment 1. FIG. 13 is a cross-sectional side view of the vicinity of a cleaner head provided in a vacuum cleaner according to a second embodiment. FIG. 13 is a cross-sectional side view of the vicinity of a cleaner head provided in the vacuum cleaner according to embodiment 3. FIG. FIG. 7 is a cross-sectional plan view of a cleaner head included in a vacuum cleaner according to a third embodiment. 11A and 11B are diagrams for explaining a brush position adjustment mechanism. 11A and 11B are diagrams for explaining a brush position adjustment mechanism. 11A and 11B are diagrams for explaining a brush position adjustment mechanism. 13 is a cross-sectional side view of a rotating brush included in a vacuum cleaner according to a third embodiment. FIG.

Embodiments will be described below with reference to the drawings. Common or corresponding elements in each figure are denoted by the same reference numerals, and description thereof will be simplified or omitted. Note that when referring to angles in this disclosure, when there is a dominant angle and a recessive angle whose sum is 360 degrees, this generally refers to an inferior angle, and there are acute angles and obtuse angles whose sum is 180 degrees. In principle, it refers to an acute angle. Further, the configurations shown in the embodiments described below are examples of technical ideas related to the present disclosure, and can be combined with other known technologies, or can be combined with multiple techniques described in the present disclosure. It is also possible to combine technical ideas. Further, it is also possible to omit or change a part of the configuration without departing from the gist of the present disclosure.

Embodiment 1.
1 and 2 are diagrams showing a vacuum cleaner 1 according to embodiment 1. As shown in these figures, the vacuum cleaner 1 according to embodiment 1 includes a cleaner head 2, a handle 3 that is held by a user, a pipe 4 provided between the cleaner head 2 and the handle 3, and a hinge 5 that connects the cleaner head 2 and the pipe 4.

The cleaner head 2 is movable over the surface to be cleaned. The surface to be cleaned will hereinafter be referred to as the "surface to be cleaned." The surface to be cleaned may be, for example, a floor surface such as a wooden floor, a tatami mat, a carpet, or a futon. A typical surface to be cleaned is horizontal.

The cleaner head 2 has a rotating brush 6. In the illustrated example, the cleaner head 2 has a main body 24. The rotating brush 6 is disposed inside the main body 24. The rotating brush 6 rotates in one direction around a brush central axis 7 that is parallel to the surface to be cleaned. In the example of FIG. 1 or FIG. 2, the rotating brush 6 rotates counterclockwise. The cleaner head 2 has a motor (not shown) that rotates the rotating brush 6. The rotating brush 6 is also called an agitator. The rotating brush 6 scrapes off dirt adhering to the surface to be cleaned.

The hinge 5 connects the cleaner head 2 and the pipe 4 so that the pipe 4 can rotate relative to the cleaner head 2 about the hinge center axis 8. The hinge center axis 8 is parallel to the brush center axis 7. 1 and 2 correspond to views seen from a direction parallel to the brush central axis 7 and the hinge central axis 8. FIG.

The vacuum cleaner 1 can be used in both the first usage pattern shown in FIG. 1 and the second usage pattern shown in FIG. 2. A first usage configuration shown in FIG. 1 is a configuration in which the pipe 4 is inclined in the first direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush central axis 7 and the hinge central axis 8. The first direction is a direction perpendicular to and horizontal to the brush central axis 7 or the hinge central axis 8.

A second usage form shown in FIG. 2 is a form in which the pipe 4 is inclined in a second direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush central axis 7 and the hinge central axis 8. The second direction is the opposite direction to the first direction.

In FIGS. 1 and 2, the right direction corresponds to the first direction, and the left direction corresponds to the second direction. Assuming that the rotating brush 6 is a wheel, when the rotating brush 6 rotates, a driving force that helps the cleaner head 2 move in the second direction is exerted.

When the pipe 4 rotates counterclockwise around the hinge central axis 8 from the first usage configuration in FIG. 1, it becomes the second usage configuration.

When the cleaner head 2 advances in the second direction in the first usage mode of FIG. 1, the rotating brush 6 rotates in a forward direction relative to the direction of advancement and comes into contact with the surface to be cleaned. In other words, in the first usage mode of FIG. 1, the direction of advancement of the cleaner head 2 coincides with the direction of rotation of the rotating brush 6. The first usage mode of FIG. 1 corresponds to the normal specification.

In the first usage mode shown in Figure 1, when the user moves the cleaner head 2 quickly, the speed at which the bristles of the rotating brush 6 come into contact with the surface to be cleaned decreases, which tends to reduce the scraping power.

In the first mode of use, the angle α between the longitudinal axis 10 of the pipe 4 and the surface to be cleaned is an acute angle. The angle α may be, for example, between 0 degrees and 80 degrees.

In the second usage mode of FIG. 2, when the cleaner head 2 advances in the first direction, the rotating brush 6 rotates in the opposite direction to the forward movement and contacts the surface to be cleaned. That is, in the second usage mode of FIG. 2, the forward movement direction of the cleaner head 2 is opposite to the rotation direction of the rotating brush 6. In the second usage mode of FIG. 2, the speed at which the bristles of the rotating brush 6 come into contact with the surface to be cleaned is higher than in the first usage mode. Therefore, in the second usage mode of FIG. 2, the force of the rotating brush 6 to scrape off dirt is higher than in the first usage mode. That is, the second usage mode of FIG. 2 corresponds to an increased scraping specification that has a stronger force for scraping off dirt than the normal specification.

In the second mode of use, the angle β between the longitudinal axis 10 of the pipe 4 and the surface to be cleaned is an acute angle. The angle β may be, for example, between 0 degrees and 80 degrees.

In this embodiment, the user can choose between the first usage mode, which is the normal specification, and the second usage mode, which is the specification for increasing the scraping power. This allows for different usage modes depending on the situation. For example, if the surface to be cleaned is made of a material that is easily scratched, the user selects the first usage mode. In contrast, if dirt is stuck to the surface to be cleaned, the user selects the second usage mode.

In the illustrated example, the position of the hinge center axis 8 and the position of the brush center axis 7 match with respect to the horizontal positional relationship parallel to the surface to be cleaned. Not limited to this example, in the present disclosure, the position of the hinge center axis 8 and the position of the brush center axis 7 do not need to match with respect to the horizontal positional relationship.

The vacuum cleaner 1 of this embodiment is equipped with a handle rotation mechanism 9 that allows the handle 3 to be rotated. The handle rotation mechanism 9 allows the handle 3 to be rotated around the longitudinal axis 10 of the pipe 4. In the example of FIG. 1, the handle 3 faces upward. When the pipe 4 is rotated in the second direction from the state of FIG. 1 around the hinge central axis 8, the handle 3 faces downward. When the handle 3 is rotated 180 degrees from that state by the handle rotation mechanism 9, it becomes the state of FIG. 2, where the handle 3 faces upward. In this embodiment, by providing the handle rotation mechanism 9, the orientation of the handle 3 in the first usage mode can be made to match the orientation of the handle 3 in the second usage mode, resulting in excellent usability.

The vacuum cleaner 1 according to the first embodiment further includes a vacuum cleaner main body 11. A pipe 4 is connected to the cleaner body 11. The handle 3 is provided on the cleaner body 11. The illustrated example shows the configuration of a cordless vertical vacuum cleaner. The vacuum cleaner of the present disclosure is not limited to this, and can also be applied to, for example, a canister type vacuum cleaner.

The vacuum cleaner 1 of the present disclosure does not need to include a handle rotation mechanism 9. For example, if a handle is provided at the rear end of the vacuum cleaner body 11, it is possible to ensure that the usability of the handle does not change between the first and second usage modes even without the handle rotation mechanism 9.

In the following description, dust and other debris may be collectively referred to simply as "dust." Furthermore, air mixed with dust is sometimes called "dust-containing air." Air from which dust has been removed is sometimes called "clean air."

The cleaner body 11 is provided with an electric blower for generating suction air, a rechargeable battery as a power source, a control section 50, a dust collection section, and an operation section. The dust collecting section may be of a cyclone type or a paper pack type, for example.

The bottom surface of the cleaner head 2 is provided with a suction opening for sucking air and dust from the surface to be cleaned.

When using the vacuum cleaner 1, the user removes the vacuum cleaner 1 from the charging base and operates the operating unit, which activates the electric blower in the vacuum cleaner body 11 and starts operation. The user cleans by moving the cleaner head 2 over the surface to be cleaned. Dust and other particles on the surface to be cleaned are sucked into the cleaner head 2 through the suction opening. The dust-laden air sucked into the cleaner head 2 flows into the dust collection section through the intake air passage formed inside the hinge 5 and the intake air passage formed inside the pipe 4. Dust is separated from the dust-laden air in the dust collection section, and the separated dust is collected in the dust collection section. The clean air that has passed through the dust collection section passes through the electric blower and is discharged to the outside from the vacuum cleaner body 11.

The device may be configured so that the user can change the rotation speed of the rotating brush 6 by operating the operating unit. The device may be configured so that the user can change the rotation speed of the electric blower by operating the operating unit.

The control unit 50 controls the operation of the vacuum cleaner 1. Each function of the control unit 50 may be achieved by a processing circuit. The processing circuit of the control unit 50 may include at least one processor and at least one memory. When the processing circuit includes at least one processor and at least one memory, each function of the control unit 50 may be achieved by software, firmware, or a combination of software and firmware. At least one of the software and firmware may be written as a program. At least one of the software and firmware may be stored in at least one memory. At least one processor may achieve each function of the control unit 50 by reading and executing a program stored in at least one memory. At least one memory may include a non-volatile or volatile semiconductor memory, a magnetic disk, etc.

The processing circuit of the control unit 50 may include at least one dedicated hardware. When the processing circuit comprises at least one dedicated hardware, the processing circuit may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-FPGA), etc. Programmable Gate Array) or a combination thereof. The functions of each part of the control unit 50 may be achieved by respective processing circuits. Furthermore, the functions of each part of the control section 50 may be achieved by a processing circuit. Regarding each function of the control unit 50, some may be achieved by dedicated hardware, and other parts may be achieved by software or firmware. The processing circuit may achieve each function of the control unit 50 using hardware, software, firmware, or a combination thereof.

The present invention is not limited to a configuration in which the operation is controlled by a single control unit 50, but may be configured to control the operation by a plurality of control units 50 working together.

Figure 3 is a cross-sectional side view of the vicinity of the cleaner head 2 provided in the vacuum cleaner 1 according to embodiment 1. Figure 4 is a cross-sectional plan view of the cleaner head 2 provided in the vacuum cleaner 1 according to embodiment 1. Figure 5 is a cross-sectional side view of the vicinity of the cleaner head 2 provided in the vacuum cleaner 1 according to embodiment 1.

As shown in FIG. 4, the cleaner head 2 has a plurality of wheels 12 that are in contact with the surface to be cleaned. By providing the wheels 12, the cleaner head 2 can smoothly move on the surface to be cleaned.

Figure 3 shows the first usage mode. Figure 5 shows the second usage mode. In order to improve suction performance, it is important to ensure negative pressure inside the cleaner head 2, which has the rotating brush 6.

The vacuum cleaner 1 according to the first embodiment further includes a first negative pressure maintaining member 13 and a second negative pressure maintaining member 14. The first negative pressure maintaining member 13 and the second negative pressure maintaining member 14 are provided at the bottom of the cleaner head 2. The first negative pressure maintaining member 13 is located in a first direction relative to the rotating brush 6. The second negative pressure maintaining member 14 is located in a second direction relative to the rotating brush 6. The rotating brush 6 is located between the first negative pressure maintaining member 13 and the second negative pressure maintaining member 14. Each of the first negative pressure maintaining member 13 and the second negative pressure maintaining member 14 may be made of a material such as felt. As shown in FIG. 4, each of the first negative pressure maintaining member 13 and the second negative pressure maintaining member 14 is provided so as to extend in an elongated manner along the longitudinal direction of the cleaner head 2.

In this embodiment, the provision of the first negative pressure maintaining member 13 and the second negative pressure maintaining member 14 makes it easier to maintain the negative pressure inside the cleaner head 2. This makes it possible to increase the suction force for sucking in dust. In addition, the first negative pressure maintaining member 13 or the second negative pressure maintaining member 14 moves in contact with the surface to be cleaned, making it possible to wipe and clean the surface to be cleaned.

As shown in FIG. 3, the first negative pressure maintaining member 13 can move up and down along the guide 15. The second negative pressure maintaining member 14 can move up and down along the guide 16. A hinge shaft 17 is provided inside the hinge 5. The hinge shaft 17 rotates and moves together with the pipe 4. One end of the link 18 is connected to the first negative pressure maintaining member 13. The other end of the link 18 is connected to the hinge shaft 17. One end of the link 19 is connected to the second negative pressure maintaining member 14. The other end of the link 19 is connected to the hinge shaft 17.

The link 18 converts rotational movement of the hinge shaft 17 into vertical movement of the first negative pressure maintaining member 13. The link 19 converts rotational movement of the hinge shaft 17 into vertical movement of the second negative pressure maintaining member 14 .

The vacuum cleaner 1 according to the first embodiment includes a negative pressure maintaining member moving mechanism. The negative pressure maintaining member moving mechanism causes the first negative pressure maintaining member 13 to protrude and the second negative pressure maintaining member 14 to retract in the first usage mode shown in FIG. The negative pressure maintaining member moving mechanism causes the second negative pressure maintaining member 14 to protrude and retracts the first negative pressure maintaining member 13 in the second usage mode shown in FIG. In the illustrated example, the guide 15, the guide 16, the hinge shaft 17, the link 18, and the link 19 correspond to the negative pressure maintaining member moving mechanism.

When the cleaner head 2 moves in the second direction in the first usage mode of FIG. 3, the second negative pressure maintaining member 14, which is located ahead of the rotating brush 6 in the direction of travel, is retracted, leaving a gap between the surface to be cleaned and the second negative pressure maintaining member 14. Dust on the surface to be cleaned can easily pass through the gap and enter the cleaner head 2. At this time, the first negative pressure maintaining member 13 protrudes and is in contact with the surface to be cleaned. This makes it easier to maintain negative pressure inside the cleaner head 2.

When the cleaner head 2 moves in the first direction in the second usage mode shown in FIG. There is a gap between the negative pressure maintaining member 13 and the negative pressure maintaining member 13 . Dust on the surface to be cleaned can easily enter the cleaner head 2 through the gap. At this time, the second negative pressure maintaining member 14 protrudes and is in contact with the surface to be cleaned. Therefore, it is easy to maintain negative pressure inside the cleaner head 2.

In the present disclosure, the negative pressure maintaining member moving mechanism is not limited to the illustrated example. For example, the negative pressure maintaining member moving mechanism may use an electric actuator to move the first negative pressure maintaining member 13 and the second negative pressure maintaining member 14.

Embodiment 2.
Next, a second embodiment will be described with reference to Fig. 6, focusing on the differences from the first embodiment described above, and the description of the commonalities will be simplified or omitted. Also, the same reference numerals will be used to designate the common or corresponding elements to the elements described above.

Figure 6 is a cross-sectional side view of the vicinity of the cleaner head 2 provided in the vacuum cleaner 1 according to the first embodiment. As shown in Figure 6, the vacuum cleaner 1 of this embodiment further includes an angle sensor 20 that detects the angle of the hinge 5. The control unit 50 receives a signal detected by the angle sensor 20. The control unit 50 can determine whether the first usage mode or the second usage mode is in accordance with the signal from the angle sensor 20.

The control unit 50 may set the rotation speed of the rotating brush 6 in the second usage mode to be higher than the rotation speed of the rotating brush 6 in the first usage mode. In the first usage mode, the rotation speed of the rotating brush 6 is relatively low, so power consumption can be reduced. In the second usage mode, the rotation speed of the rotating brush 6 is relatively high, so the power to scrape off dirt from the surface to be cleaned is further improved.

Embodiment 3.
Next, a third embodiment will be described with reference to Fig. 7 to Fig. 12. The description will focus on the differences from the first embodiment, and the description of the commonalities will be simplified or omitted. In addition, the same reference numerals will be used to designate the common or corresponding elements to the elements described above.

Figure 7 is a cross-sectional side view of the vicinity of the cleaner head 2 provided in the electric vacuum cleaner 1 according to embodiment 3. Figure 8 is a cross-sectional plan view of the cleaner head 2 provided in the electric vacuum cleaner 1 according to embodiment 3.

As shown in FIG. 7, the rotating brush 6 provided in the vacuum cleaner 1 of this embodiment includes a shaft 21. The shaft 21 corresponds to the rotation axis of the rotating brush 6. The spring 23 supports the shaft 21 so that the shaft 21 can move up and down along the guide 22. The guide 22 and the spring 23 correspond to the suspension device of the rotating brush 6. In this embodiment, by providing the guide 22 and the spring 23 that correspond to the suspension device of the rotating brush 6, it is advantageous to keep the scraping force constant even on the surface to be cleaned that has a lot of unevenness.

The vacuum cleaner 1 of this embodiment is equipped with a brush position adjustment mechanism 25 that can change the vertical position of the brush central shaft 7 relative to the main body 24 of the cleaner head 2. Figures 9 to 12 are diagrams for explaining the brush position adjustment mechanism 25. As shown in Figure 9, the brush position adjustment mechanism 25 has a knob 26 that is operated by the user. The pinion gear 27 shown in Figure 11 rotates integrally with the knob 26. The pinion gear 27 meshes with the rack gear 28. The positioning plate 29 can move laterally together with the rack gear 28. When the user turns the knob 26, the positioning plate 29 moves left and right.

A guide 22 and a spring 23, which are suspension devices for the rotating brush 6, are arranged within a casing 30. A first recess 31 and a second recess 32 are formed in the side wall of the casing 30. The second recess 32 is located below the first recess 31. FIG. 10 shows a state in which the positioning plate 29 is inserted into the first recess 31. As shown in FIG. In this state, the guide 22 cannot move vertically relative to the casing 30. When the user turns the knob 26 from this state, the positioning plate 29 is retracted from the first recess 31, resulting in the state shown in FIG. 9. In the state shown in FIG. 9, the guide 22 can move vertically with respect to the casing 30. In the state shown in FIG. 9, move the guide 22 downward to align the position of the positioning plate 29 with the position of the second recess 32, and then turn the knob 26 to make the positioning plate 29 protrude. Insert into the second recess 32. When the positioning plate 29 is inserted into the second recess 32, the guide 22 cannot move vertically with respect to the casing 30.

As described above, the brush position adjustment mechanism 25 of this embodiment can change the vertical position of the brush central axis 7 with respect to the main body 24 of the cleaner head 2.

When the positioning plate 29 is inserted into the second recess 32, the bristles of the rotating brush 6 hit the surface to be cleaned more strongly than when the positioning plate 29 is inserted into the first recess 31. Therefore, when the positioning plate 29 is inserted into the second recess 32, a higher scraping force is obtained than when the positioning plate 29 is inserted into the first recess 31.

When the positioning plate 29 is inserted into the first recess 31, the force with which the bristles of the rotating brush 6 hit the surface to be cleaned is weaker than when the positioning plate 29 is inserted into the second recess 32. Therefore, even if the surface to be cleaned is made of a material that is easily damaged, damage can be reliably suppressed.

FIG. 12 is a cross-sectional side view of the rotating brush 6 included in the vacuum cleaner 1 according to the third embodiment. The rotating brush 6 of this embodiment includes a brush main body 33 , a large number of first flocks 34 planted in the brush main body 33 , and a large number of second flocks 35 planted in the brush main body 33 . The length of the first flocked hair 34 is longer than the length of the second flocked hair 35.

The length of the first bristles 34 and the length of the second bristles 35 are adjusted as follows. When the positioning plate 29 is inserted into the second recess 32, both the long first bristles 34 and the short second bristles 35 come into contact with the surface to be cleaned. In contrast, when the positioning plate 29 is inserted into the first recess 31, the long first bristles 34 come into contact with the surface to be cleaned, but the short second bristles 35 do not come into contact with the surface to be cleaned. In this way, by providing multiple lengths of bristles on the rotating brush 6, the number of bristles that come into contact with the surface to be cleaned changes when the height position of the rotating brush 6 is adjusted, and the scraping force can be adjusted to suit the situation.

Note that among the features of the plurality of embodiments described above, two or more features that can be combined may be combined and implemented.

Hereinafter, various aspects of the present disclosure will be collectively described as supplementary notes.

(Additional note 1)
a cleaner head having a rotating brush that rotates in one direction about a brush central axis parallel to a surface to be cleaned;
a handle grasped by a user;
a pipe provided between the cleaner head and the handle;
a hinge that connects the cleaner head and the pipe so that the pipe can rotate relative to the cleaner head about a hinge center axis that is parallel to the brush center axis;
A vacuum cleaner comprising:
a first usage mode in which the pipe is inclined in a first direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush center axis and the hinge center axis;
It can be used in a second usage mode in which the pipe is inclined in a second direction opposite to the first direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush center axis and the hinge center axis. and
When the cleaner head moves in the second direction in the first usage mode, the rotary brush rotates in a positive direction with respect to the direction of movement and comes into contact with the surface to be cleaned;
In the second mode of use, when the cleaner head moves in the first direction, the rotating brush rotates in a direction opposite to the direction of movement of the cleaner head and comes into contact with the surface to be cleaned.
(Additional note 2)
The vacuum cleaner according to supplementary note 1, including a handle rotation mechanism that allows the handle to rotate around the longitudinal axis of the pipe.
(Appendix 3)
a first negative pressure maintaining member provided at the bottom of the cleaner head and positioned in the first direction with respect to the rotating brush;
a second negative pressure maintaining member provided at the bottom of the cleaner head and positioned in the second direction with respect to the rotating brush;
In the first mode of use, the first negative pressure maintaining member is protruded and the second negative pressure maintaining member is retracted, and in the second mode of use, the second negative pressure maintaining member is protruded and the first negative pressure maintaining member is retracted. a negative pressure maintenance member moving mechanism for retracting the negative pressure maintenance member;
The vacuum cleaner according to Supplementary Note 1 or 2, comprising:
(Additional note 4)
According to any one of Supplementary Notes 1 to 3, comprising a control unit that increases the rotational speed of the rotating brush in the second usage mode than the rotational speed of the rotating brush in the first usage mode. Vacuum cleaner.
(Appendix 5)
The vacuum cleaner according to any one of Supplementary Notes 1 to 4, including a brush position adjustment mechanism that can change the vertical position of the brush center axis with respect to the main body of the cleaner head.

1 Vacuum cleaner, 2 Cleaner head, 3 Handle, 4 Pipe, 5 Hinge, 6 Rotating brush, 7 Brush center axis, 8 Hinge center axis, 9 Handle rotation mechanism, 10 Longitudinal axis, 11 Vacuum cleaner body, 12 Wheels, 13 1st negative pressure maintenance member, 14 2nd negative pressure maintenance member, 15 guide, 16 guide, 17 hinge shaft, 18 link, 19 link, 20 angle sensor, 21 shaft, 22 guide, 23 spring, 24 main body, 25 brush position adjustment mechanism, 26 knob, 27 pinion gear, 28 rack gear, 29 positioning plate, 30 casing, 31 first recess, 32 second recess, 33 brush body, 34 first flock, 35 second flock, 50 control section

Claims (5)

a cleaner head having a rotating brush that rotates in one direction around a brush central axis that is parallel to a surface to be cleaned;
A handle that is gripped by a user;
a pipe provided between the cleaner head and the handle;
a hinge connecting the cleaner head and the pipe such that the pipe can rotate relative to the cleaner head about a hinge central axis parallel to the brush central axis;
A vacuum cleaner comprising:
a first usage mode in which the pipe is inclined in a first direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis;
a second usage form in which the pipe is inclined in a second direction opposite to the first direction with respect to the surface to be cleaned when viewed from a direction parallel to the brush central axis and the hinge central axis;
When the cleaner head advances in the second direction in the first usage mode, the rotating brush comes into contact with the surface to be cleaned while rotating in a forward direction relative to the moving direction of the cleaner head,
In the second usage mode, when the cleaner head advances in the first direction, the rotating brush rotates in a reverse direction relative to the advancement direction while contacting the surface to be cleaned. The vacuum cleaner according to claim 1, further comprising a handle rotation mechanism that allows the handle to be rotated about the longitudinal axis of the pipe. a first negative pressure maintaining member provided at the bottom of the cleaner head and positioned in the first direction with respect to the rotating brush;
a second negative pressure maintaining member provided at the bottom of the cleaner head and positioned in the second direction with respect to the rotating brush;
In the first mode of use, the first negative pressure maintaining member is protruded and the second negative pressure maintaining member is retracted, and in the second mode of use, the second negative pressure maintaining member is protruded and the first negative pressure maintaining member is retracted. a negative pressure maintenance member moving mechanism for retracting the negative pressure maintenance member;
The vacuum cleaner according to claim 1 or 2, comprising: The vacuum cleaner according to claim 1 or 2, further comprising a control unit that makes the rotational speed of the rotating brush in the second usage mode higher than the rotational speed of the rotating brush in the first usage mode. . The vacuum cleaner according to claim 1 or 2, further comprising a brush position adjustment mechanism that can change the vertical position of the brush central axis with respect to the main body of the cleaner head.

Images