A dust removal brush with stall indication

Abstract

The present invention discloses a dust brush with a stall indication, comprising a body and a connecting pipe, wherein a roller brush and a driving device for driving the roller brush to rotate are arranged in the body, wherein the roller brush comprises a roller and a central axis, and is characterized in that a stall indication device is arranged, wherein the stall indication device comprises an induction coil, a magnetic ring and at least one light emitting diode electrically connected to the induction coil, wherein the induction coil and the magnetic ring are respectively connected to one of the roller and the central axis, and the installation positions of the induction coil and the magnetic ring cooperate with each other so that when the two rotate relative to each other, the induction coil generates an induced electromotive force. The present invention enables a user to intuitively and quickly determine whether the roller brush of a vacuum cleaner is in a normal working state, and does not need to add a circuit for connecting the dust brush to the vacuum cleaner, does not affect the circuit layout of the vacuum cleaner, and is easy to implement.

Description

Technical Field

[0001] The invention relates to an accessory of a dust collecting device, in particular to a dust removing brush used for the dust collecting device, and in particular to a dust removing brush capable of visually indicating the occurrence of a stalled state. Background Art

[0002] A vacuum cleaner usually consists of a main unit and a dust removal brush. The dust removal brush is divided into floor brushes and bed brushes, etc., which are used to clean the floor or the surface of items such as sheets and sofas. The dust removal brush is very important for a vacuum cleaner, and a good dust removal brush will bring substantial improvement to the consumer's user experience. With the development of cleaning appliances, consumers have higher and higher requirements for the user interface and user experience of vacuum cleaners, so the dust removal brush of the vacuum cleaner needs to be improved.

[0003] In the floor brush and bed brush, there is usually a roller brush driven by a motor to rotate at high speed. During use, the roller brush beats or wipes the surface to be cleaned to play an auxiliary cleaning role. During use, the difference in the cleaning surface will have a great impact on the rotation speed of the roller brush. Specifically, when the suction of the vacuum cleaner is too strong, or the surface to be cleaned is too rough, such as long-haired carpets entering the suction head, sheets being rolled into the suction head, and debris being sucked in, the roller brush speed will decrease, and the friction between the roller brush bristles and the surface to be cleaned will increase sharply, resulting in the roller brush rotating at a low speed for a long time, which can easily burn out the drive motor and may also damage the surface to be cleaned (carpets, sheets, etc.). At this time, it is necessary to cut off the power supply in time; on the contrary, if the roller brush does not contact the surface to be cleaned during use, does not beat or wipe the surface to be cleaned, then the roller brush is equivalent to idling, with the least load and the fastest rotation speed. At this time, the actual vacuum cleaner will not have a cleaning effect.

[0004] In order to protect the roller brush motor, Chinese utility model patent CN208689178U discloses an alarm device for a vacuum cleaner floor brush, including a floor brush motor stall alarm circuit, which is connected to the main power supply circuit of the floor brush motor, including a current acquisition circuit, a first comparison circuit and a first alarm circuit; the current acquisition circuit acquires the current of the main power supply circuit of the floor brush motor, outputs a voltage value corresponding to the main circuit current to the first comparison circuit, and compares it with the reference voltage in the first comparison circuit. When the motor is stalled, the voltage value is greater than the reference voltage, and the first comparison circuit outputs a high level to the first alarm circuit to alarm the motor stall. This solution compares the current of the main power supply circuit of the floor brush motor with the reference current, and sends an alarm signal when the current is too large after stalling, so as to avoid motor damage caused by the roller brush rotating at a low speed for a long time under obstruction. However, this solution cannot intuitively understand the rotation of the roller brush. It can only issue an alarm when the set value is reached. The user cannot know the degree of blockage of the roller brush or the idling of the roller brush. At the same time, the current change difference of the roller brush at low speed and stalled state is not very obvious, and the stalled current between different individual motors will also be different, resulting in insensitive current collection and comparison, and even misjudgment.

[0005] Therefore, if the structure of the dust removal brush (floor brush or bed brush) of a vacuum cleaner can be improved so that the user can roughly and intuitively know whether the rotation speed of the roller brush is too slow or too fast, it will be helpful for the user to take corresponding countermeasures, cut off the power supply of the vacuum cleaner or adjust the posture of the vacuum cleaner to ensure the normal operation of the vacuum cleaner. Summary of the invention

[0006] The purpose of the present invention is to provide a dust removal brush with a stall indication, which can indicate the state of a roller brush in the dust removal brush without the need for external power supply to avoid stalling and idling.

[0007] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a dust removal brush with a stall indication, including a main body and a connecting pipe, the main body is provided with a roller brush and a driving device for driving the roller brush to rotate, the roller brush includes a roller and a central axis, and is provided with a stall indication device, the stall indication device includes an induction coil, a magnetic ring and at least one light-emitting diode electrically connected to the induction coil, the induction coil and the magnetic ring are respectively connected to one of the roller and the central axis, the installation positions of the induction coil and the magnetic ring cooperate with each other so that when the two rotate relative to each other, the induction coil generates an induced electromotive force.

[0008] In the above technical solution, the induced electromotive force is generated by cutting the magnetic field. The higher the speed of the drum, the greater the induced current and the higher the brightness of the LED. When the speed of the drum is slower, the induced current is smaller and the brightness of the LED is dimmer. When the speed of the drum is lower than a certain value, the induced current is too low and the LED cannot be lit. In this way, it can be very intuitive and quick to determine whether the roller brush of the vacuum cleaner is in a normal working state.

[0009] According to a preferred technical solution, the induction coil is connected to the drum, and the magnetic ring is connected to the central axis.

[0010] According to a further technical solution, a seat is provided on the roller brush, the seat is fixedly connected to the drum, and the induction coil and the light emitting diode are connected to the drum via the seat.

[0011] In the above technical solution, the light emitting diode is disposed in the base and arranged along the radial direction of the drum.

[0012] Preferably, the seat is located at a side end of the drum.

[0013] Preferably, the induction coil and the magnetic ring are arranged in the same plane, and the plane where the induction coil and the magnetic ring are located is perpendicular to the central axis.

[0014] In the above technical solution, fiber hairs for beating or wiping the cleaning surface are provided on the outer circumferential surface of the drum.

[0015] A further technical solution is to provide at least two light emitting diodes connected in series or in parallel.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0017] 1. The present invention uses the principle that the induction coil generates electricity by cutting the magnetic lines of force in the magnetic field. A magnetic ring is set in the middle of the induction coil, and the magnetic ring is fixed on the central axis. The roller of the dust removal brush drives the induction coil to rotate around the magnetic ring to generate electricity, thereby lighting up the light-emitting diode. The brightness of the light-emitting diode is related to the rotation speed of the roller; when the rotation speed of the roller is lower than a certain value, the induced current is too low and the light-emitting diode cannot be lit, thereby enabling the user to intuitively and quickly determine whether the roller brush of the vacuum cleaner is in a normal working state.

[0018] 2. Since the induced current is directly generated by the rotation of the roller brush, the present invention does not need to add a circuit for connecting the dust removal brush to the vacuum cleaner, does not affect the circuit layout of the vacuum cleaner, and is easy to implement.

[0019] 3. The present invention can not only judge the stalling, but also judge the obstruction of the dust removal brush by the light change of the light emitting diode before the stalling occurs, so as to deal with it in time, thereby effectively improving the dust removal effect.

[0020] 4. The light emitting diodes in the present invention can be selected from several light emitting diodes of different colors. When the roller brush rotates, the colors emitted by the light emitting diodes will be very bright and colorful, bringing visual enjoyment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded view of a roller brush according to an embodiment of the present invention;

[0022] Figure 2 A three-dimensional diagram of a dust removal brush according to an embodiment of the present invention;

[0023] Figure 3 An exploded view of a dust removal brush according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the center plane of the roller brush according to an embodiment of the present invention;

[0025] Figure 5 This is a partial enlarged view of the roller brush of an embodiment of the present invention;

[0026] Figure 6 It is an exploded view of the stall indication device according to an embodiment of the present invention.

[0027] in:

[0028] 1. Main body; 11. Transparent upper cover; 12. Main body bracket; 13. Bottom cover; 14. Main body air inlet;

[0029] 2. Connecting pipe; 20. Hose; 3. Roller brush; 31. Roller; 32. Center shaft; 321. Center shaft end cover; 33. Roller brush end cover; 30. Fiber hair;

[0030] 4. driving device; 41. motor; 42. driving wheel; 43. reduction box;

[0031] 5. stall indication device; 51. induction coil; 52. magnetic ring; 53. light emitting diode; 54. PCB; 511. induction coil accommodating upper cover; 512. induction coil accommodating lower cover;

[0032] 6. seat body; 61. LED receiving groove; 7. seat body end cover; 8. bearing;

[0033] 100. Lighting panel; 110. Anti-collision strip. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0035] Embodiment 1: See attached Figures 1 to 6As shown, the present invention provides a dust removal brush with a stall indication, comprising a body 1 and a pipe 2, wherein a roller brush 3 and a driving device 4 for driving the roller brush to rotate are arranged in the body 1, wherein the roller brush comprises a roller 31 and a central axis 32, wherein a stall indication device 5 is arranged on the roller brush 3, wherein the stall indication device comprises an induction coil 51, a magnetic ring 52 and at least one light emitting diode 53 connected to the induction coil, wherein the induction coil is connected to the roller, and the magnetic ring is connected to the central axis 32. A seat body 6 is arranged on the roller brush, wherein the seat body is fixedly connected to the roller, and the induction coil and the light emitting diode are connected to the roller through the seat body. The light emitting diode is arranged in the seat body radially relative to the roller. The seat body is located at the side end of the roller. The induction coil and the magnetic ring are arranged in the same plane, and the plane where the induction coil and the magnetic ring are located is perpendicular to the central axis. Fiber hairs for beating or wiping the cleaning surface are arranged on the outer circumferential surface of the roller.

[0036] The following is a detailed description with reference to the accompanying drawings. Figure 1 , Figure 3 and Figure 4 As shown, the dust removal brush is composed of a body 1 and a connecting pipe 2. The body 1 is provided with a roller brush 3 and a driving device 4 for driving the roller brush to rotate. The connecting pipe is connected to the body 1 through a hose 20, and the connecting pipe is used to connect a vacuum cleaner. The driving device 4 is composed of a motor 41, a driving wheel 42, and a reduction box 43. A roller brush end cap 33 is provided at one end of the roller. When the vacuum cleaner is working, the driving device 4 is engaged through the motor 41, the reduction box 43, the driving wheel 42 and the roller brush end cap 33 to drive the roller brush to rotate. The outer circumferential surface of the roller is provided with fiber hair 30 for beating or wiping the cleaned surface. The fiber hair 30 beats or wipes the surface to be cleaned, and the dust is raised. Under the action of the airflow, the dust enters the vacuum cleaner through the air inlet 14 of the body, the hose 20 connecting pipe 2. The front end of the dust removal brush is also provided with a lighting panel 100 and an anti-collision strip 110 for lighting.

[0037] The roller brush 3 comprises a roller 31 and a central shaft 32, and roller brush end caps 33 and a seat body 6 are respectively provided at both ends of the roller, and the seat body 6 is fixedly connected to the roller, and the stall indicator 5 is fixedly connected to the seat body 6, and a seat body end cap 7 is provided outside the seat body 6, and the stall indicator 5 is encapsulated between the seat body 6 and the seat body end cap 7, as shown in FIG. Figure 4The stall indicator device 5 comprises an induction coil 51, a magnetic ring 52, and a light emitting diode 53. The magnetic ring 52 is fixedly connected to the central shaft 32 and is located at the inner center of the induction coil 51 and arranged in the same plane as the induction coil 51. The central shaft 32 is provided with a central shaft end cover 321, and the central shaft 32 is fixed to the main body bracket 12 through the central shaft end cover 321. When the dust removal brush is working, the central shaft 32 does not rotate. Bearings 8 are respectively arranged on both sides of the magnetic ring 52. The outer ring of the bearing close to the middle position of the roller brush is supported on the seat body 6, and the outer ring of the bearing at one end of the roller brush is supported on the seat body end cover 7. The inner rings of the two bearings are supported on the central shaft 32. In this way, when the dust removal brush is working, the roller 31 together with the base 6, the base end cover 7, and the stall indicator device 5 rotate at a high speed relative to the central axis 32, and the magnetic ring 52 is fixed on the central axis 32 and is stationary, so that the induction coil 51 of the stall indicator device 5 cuts the magnetic lines of force at a high speed in the magnetic field formed by the magnetic ring 52, generating an induced current.

[0038] In this embodiment, the induction coil 51 is accommodated in the induction coil accommodating upper cover 511 and the induction coil accommodating lower cover 512. A PCB54 is arranged on the induction coil accommodating upper cover. The light-emitting diode 53 is connected to the induction coil 51 through the PCB54, so that the induced current flows through the light-emitting diode 53 to light up the light-emitting diode. In this embodiment, the number of light-emitting diodes 53 is 3, and the light-emitting diode is arranged radially with respect to the roller in the LED accommodating groove 61 on the base body. A preferred solution is that the base body 6 is made of transparent plastic without opening a hole in the base body, so that the light emitted by the LED can radiate outward, which is conducive to protecting the LED from external damage, such as Figure 1 and Figure 6 shown.

[0039] When the speed of the drum is higher, the induced current is larger, and the brightness of the light-emitting diode 53 is higher; when the speed of the drum is slower, the induced current is smaller, and the brightness of the light-emitting diode 53 is dimmer; when the speed of the drum is lower than a certain value, the induced current is too low, and the light-emitting diode 53 cannot be lit. In practical applications, by adjusting the number of turns of the induction coil 51 and the magnetic flux of the magnetic ring 52, it is preferred that the speed of the drum is lower than about 200 revolutions per minute, and the light-emitting diode 53 cannot be lit, so as to avoid the overheating of the motor 41 and the excessive torque of the drum caused by the speed of the drum being lower than about 200 revolutions per minute. Wear on the surface to be cleaned. Thereby, it is very intuitive and can quickly determine whether the roller brush of the vacuum cleaner is in normal working condition, while protecting the motor and the cleaning object. In practical applications, three light-emitting diodes are set, and each light-emitting diode adopts a different color. When the roller brush rotates, the color emitted by the light-emitting diode will be very dazzling and colorful, bringing visual enjoyment.

Claims

1. A dust removal brush with a stall indicator, comprising a body and a pipe, wherein a roller brush and a driving device for driving the roller brush to rotate are arranged in the body, wherein the roller brush comprises a roller and a central shaft, and wherein: A stall indication device is provided, which includes an induction coil, a magnetic ring and at least one light-emitting diode electrically connected to the induction coil. The induction coil and the magnetic ring are respectively connected to one of the roller and the central axis. The installation positions of the induction coil and the magnetic ring cooperate with each other so that when the two rotate relative to each other, the induction coil generates an induced electromotive force.

2. The dust removal brush with stall indication according to claim 1, characterized in that: The induction coil is connected to the drum, and the magnetic ring is connected to the central axis.

3. The dust removal brush with stall indication according to claim 2, characterized in that: The roller brush is provided with a seat body, the seat body is fixedly connected to the roller, and the induction coil and the light emitting diode are connected to the roller through the seat body.

4. The dust removal brush with stall indication according to claim 3, characterized in that: The light emitting diodes are disposed in the base and arranged along the radial direction of the drum.

5. The dust removal brush with stall indication according to claim 3, characterized in that: The seat body is located at a side end of the drum.

6. The dust removal brush with stall indication according to claim 1, characterized in that: The induction coil and the magnetic ring are arranged in the same plane, and the plane where the induction coil and the magnetic ring are located is perpendicular to the central axis.

7. The dust removal brush with stall indication according to claim 1, characterized in that: The outer circumferential surface of the drum is provided with fiber hairs for beating or wiping the cleaning surface.

8. The dust removal brush with stall indication according to claim 1, characterized in that: At least two light emitting diodes are connected in series or in parallel.

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