A cleaning device and a working method of the cleaning device
By designing a cleaning device with recycling pipelines and conversion devices, the problem of the existing cleaner's single function cannot be handled by dust and sewage, and the separation and collection of dust and sewage is realized, and the cleaning process is simplified.
Patent Information
- Application Number
- CN201810522990.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-05-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2038-05-28
AI Technical Summary
The existing cleaning electrical appliances have a single function and cannot handle dust and sewage at the same time, making it difficult to clean up the mixture of dust and sewage, causing trouble to users.
A cleaning device is designed, including a floor brush assembly, a dust bucket, a sewage bucket and a motor assembly. The dust and sewage are collected into the dust bucket and a sewage bucket respectively through the recycling pipe, and the ash absorption mode and a water absorption mode are switched through the conversion device.
The separation and collection of dust and sewage is achieved, avoiding the problem of difficult mixing and difficulty in cleaning, simplifying the cleaning process and improving the user experience.
Smart Images

Figure CN110537870B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cleaning equipment, and particularly to a cleaning device and a working method thereof. Background Art
[0002] Currently, the mainstream cleaning appliances mainly include vacuum cleaners, wet cleaning machines, or wet-dry vacuum cleaners. Due to product structure limitations, at present, except for wet-dry vacuum cleaners, other cleaners have a single function and cannot be used in multiple ways to meet the cleaning needs of various daily life scenarios in domestic households. If multiple cleaning appliances are purchased, it is not only inconvenient to use, but also increases the living cost and reduces the living area of the family, which invisibly reduces our quality of life.
[0003] Chinese Patent Publication No. 207000414 discloses an existing wet-dry vacuum cleaner. When in use, first, dust is sucked into the dust and water collection chamber through a suction pipe. After vacuuming, the parts that need to be washed with water are washed, and then the sewage is sucked into the dust and water collection chamber through the suction pipe by a wet-dry vacuum head. The defect of this existing wet-dry vacuum cleaner is that dust and sewage are placed in the dust and water collection chamber at the same time. After the sewage and dust are mixed, it is difficult to clean the dirt after the vacuum cleaner is used, causing trouble to users. Summary of the Invention
[0004] The present invention provides a cleaning device that is easy to clean dirt and a working method thereof.
[0005] The present invention provides a cleaning device, including a floor brush assembly, a dust bucket, a sewage bucket, and a motor assembly. The floor brush assembly is provided with a recovery pipeline connecting the dust bucket and the sewage bucket. The cleaning device has a dust suction mode and a water suction mode. In the dust suction mode, the suction force generated by the motor assembly causes dust to enter the dust bucket through the recovery pipeline. In the water suction mode, the suction force generated by the motor assembly causes sewage to enter the sewage bucket through the recovery pipeline.
[0006] Further, the cleaning device further includes a conversion device, and the conversion device controls the passage between the motor assembly and the recovery pipeline to make the cleaner in the water suction mode or the dust suction mode.
[0007] Further, the conversion device is arranged between the motor assembly, the dust bucket, and the sewage bucket. When the conversion device connects / closes the passage between the motor assembly and the dust bucket, it closes / connects the passage between the motor assembly and the sewage bucket.
[0008] Further, the cleaning device further includes a seat body, and the motor assembly and the conversion device are assembled to the seat body.
[0009] Further, the base body is provided with a base portion, a receiving portion extending from the base portion, a first connecting portion and a second connecting portion extending from the receiving portion. The base portion is provided with an opening. The receiving portion is provided with a receiving space for receiving the conversion device. The first connecting portion communicates with the dust bucket, and the second connecting portion communicates with the sewage bucket. The conversion device is provided with a through connecting portion that connects the opening to the first connecting portion or the opening to the second connecting portion.
[0010] Further, the cleaning device further includes a handle for driving the conversion device to rotate, so that the connecting portion connects the opening to the first connecting portion or the opening to the second connecting portion.
[0011] Further, the cleaning device further includes an upper cover assembled to the base body and a first switch and a second switch assembled to the upper cover. When the handle contacts the first switch, the connecting portion connects the opening to the first connecting portion. When the handle contacts the second switch, the connecting portion connects the opening to the second connecting portion.
[0012] Further, the handle is provided with a contact member that contacts and conducts with the first switch and the second switch. When the contact member conducts with the first switch and the second switch, the motor assembly is started.
[0013] Further, the cleaning device further includes a detection device. When the cleaning device is in the dust suction mode, if the detection device detects water on the floor brush assembly, the motor assembly is turned off. When the cleaning device is in the water suction mode, if the detection device detects no water on the floor brush assembly, the motor assembly is turned off.
[0014] Further, the cleaning device further includes a detection device and a driving component for controlling the rotation of the conversion device. When the cleaning device is in the dust suction mode, if the detection device detects water on the floor brush assembly, the driving component is started and drives the conversion device to rotate, so that the cleaning device is converted to the water suction mode. When the cleaning device is in the water suction mode, if the detection device detects no water on the floor brush assembly, the driving component is started and drives the conversion device to rotate, so that the cleaning device is converted to the dust suction mode.
[0015] Further, the cleaning device further includes a sealing ring located between the conversion device and the base body.
[0016] Further, after the dust in the dust bucket is separated and filtered, the separated gas enters the motor assembly through the opening of the base body for discharge, and the dust and particulate dirt are collected in the dust bucket.
[0017] Further, the sewage in the sewage bucket is separated by gravity. The separated gas enters the motor assembly through the opening of the base and is discharged, while the sewage is recycled in the sewage bucket.
[0018] Further, the cleaning device further includes a clean water bucket located on the main body. The clean water bucket is filled with clean water. When there is a cleaning requirement, the water in the clean water bucket will flow out for cleaning.
[0019] Further, a first pipe communicating with the recycling pipe is provided in the sewage bucket. The sewage flows into the sewage bucket through the first pipe, and the height of the sewage in the sewage bucket is lower than the height of the liquid outlet of the first pipe in the sewage bucket.
[0020] The present invention also provides a working method for a cleaning device. The cleaning device is provided with a dust suction mode and a water suction mode. The cleaning device includes a dust bucket for containing dust, a sewage bucket for containing sewage, a detection device for detecting the cleaning device when it is sucking water, and a conversion device for switching the cleaning device between the dust suction mode and the water suction mode; wherein the working method includes the following steps:
[0021] When the cleaning device is in the dust suction mode, if the detection device detects that the cleaning device is sucking water, the conversion device switches the cleaning device from the dust suction mode to the water suction mode;
[0022] When the cleaning device is in the water suction mode, if the detection device does not detect that the cleaning device is sucking water, the conversion device switches the cleaning device from the water suction mode to the dust suction mode.
[0023] Further, the cleaning device further includes a floor brush assembly and a motor assembly. The floor brush assembly is provided with a recycling pipe connecting the dust bucket and the sewage bucket; wherein when the cleaning device is in the dust suction mode, the suction force generated by the motor assembly causes the dust to enter the dust bucket through the recycling pipe; when the cleaning device is in the water suction mode, the suction force generated by the motor assembly causes the sewage to enter the sewage bucket through the recycling pipe.
[0024] Further, the detection device is provided on the floor brush assembly. If water is detected on the floor brush assembly, it is determined that the cleaning device is sucking water.
[0025] Further, the conversion device includes a driving component for driving the conversion device to switch between the dust suction mode and the water suction mode.
[0026] Further, when the cleaning device is switched from the water suction mode to the dust suction mode or from the dust suction mode to the water suction mode, the cleaning device reminds the operator of the current working mode by making a sound or flashing an indicator light.
[0027] When the cleaning device of the present invention is in use, sewage is sucked into the sewage bucket, and dust is sucked into the dust bucket. Water and dirt are stored separately and will not be mixed into a muddy object, which is convenient for distinguishing and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is an exploded view of the cleaning device of the present invention.
[0029] Figure 2 is Figure 1 an exploded view of some components of the cleaning device shown in
[0030] Figure 3 is Figure 2 an assembly drawing of the exploded view shown in
[0031] Figure 4 is Figure 1 an assembly drawing of the cleaning device shown in
[0032] Figure 5 is Figure 4 a schematic cross-sectional view of the dust recovery mode of the cleaning device shown in
[0033] Figure 6 is Figure 4 a schematic cross-sectional view of the sewage recovery mode of the cleaning device shown in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0034] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.
[0035] Next, with reference to the drawings, the cleaning device of the present invention and the working method of the cleaning device will be introduced in detail.
[0036] Refer to Figures 1 to 6 As shown, the cleaning device of the present invention includes a main body 1, a floor brush assembly 2 located on the main body 1, a dust bucket 3, a sewage bucket 4, a clean water bucket 5, and a body assembly 6.
[0037] The floor brush assembly 2 is provided with a recovery pipe 22 for dust or sewage to pass through. The recovery pipe 22 has a first end 220 connected to the dust bucket 3 and a second end 221 connected to the sewage bucket 4. The dust bucket 3 is provided with a first through hole 31 communicating with the first end 220 and a second through hole 32 communicating with the body assembly 6. The sewage bucket 4 is provided with a third through hole 41 communicating with the second end 221 and a fourth through hole 42 communicating with the body assembly 6. In this embodiment, a first pipe 43 communicating with the recovery pipe 22 is provided in the sewage bucket 4, and the sewage flows into the sewage bucket 4 through the first pipe 43. The height of the sewage in the sewage bucket 4 is lower than the height of the liquid outlet of the first pipe 43 in the sewage bucket 4 to prevent the sewage from overflowing from the first pipe 43. For example, a liquid level detection probe can be specifically set, and when the sewage level reaches the height of the probe, the controller automatically shuts down the body assembly 6; alternatively, a floating body can also be set, and when the liquid level reaches a predetermined height, the floating body automatically blocks the water outlet under the action of buoyancy. The clean water bucket 5 contains clean water, and when there is a cleaning need, the clean water in the clean water bucket 5 will flow out for cleaning.
[0038] Refer specifically to Figure 2 and Figure 3 As shown, the body assembly 6 includes a base 60, a motor assembly 61 assembled to the base 60, a conversion device 62, an upper cover 63, a sealing ring 64 located between the conversion device 62 and the base 60, a first switch 64 and a second switch 65 assembled to the upper cover 63, and a handle 66 assembled to the conversion device 62.
[0039] The base 60 is provided with a base portion 601, a receiving portion 602 extending downward from the base portion 601, and a first connecting portion 603 and a second connecting portion 604 extending from the receiving portion 602. The base portion 601 is provided with an opening 6011. The receiving portion 602 is provided with a receiving space 6021 for receiving the conversion device 62. The first connecting portion 603 communicates with the second through hole 32 of the dust bucket 3, and the second connecting portion 604 communicates with the fourth through hole 42 of the sewage bucket 4.
[0040] The conversion device 62 is provided with a through communication part 621. When the handle 66 rotates, it drives the conversion device 62 to rotate, so that the communication part 621 connects the opening 6011 with the first connection part 603 or connects the opening 6011 with the second connection part 604. The handle 66 is provided with a contact part 661 that contacts the first switch 64 and the second switch 65. When the contact part 661 contacts and conducts with the first switch 64, the communication part 621 connects the opening 6011 with the first connection part 603, the opening 6011 is not connected with the second connection part 604, and the motor assembly 61 is started; when the contact part 661 contacts and conducts with the second switch 65, the opening 6011 is connected with the second connection part 604, the opening 6011 is not connected with the first connection part 603, and the motor assembly 61 is started; when the contact part 661 is disconnected from both the first switch 64 and the second switch 65, the opening 6011 is not connected with the first connection part 603 and the opening 6011 is not connected with the second connection part 604, and the motor assembly 61 is turned off. Using the first switch 64 and the second switch 65 to contact the contact part 661 on the handle 66 to start the motor assembly 61 saves the space of the body assembly 6, and thus makes the cleaning device of the present invention more compact.
[0041] Refer specifically to Figure 5 As shown, when the cleaning device of the present invention uses the dust suction mode, rotate the handle 66 to make the contact part 661 contact and conduct with the first switch 64. At this time, the communication part 621 of the conversion device 62 connects the opening 6011 with the first connection part 603, and the motor assembly 61 is started to generate suction. After dust and particulate dirt are thrown up from the ground by the floor brush assembly 2, they enter the recovery pipe 22 along with the airflow flowing at high speed towards the motor assembly 61, and reach the dust bucket 3 along the recovery pipe 22. After separation and filtration, the separated gas enters the motor assembly 61 through the opening 6011 of the seat body 60 for discharge, while the dust and particulate dirt are recovered in the dust bucket 3 and are processed after the cleaning is completed. During this process, since the opening 6011 is not connected with the second connection part 604, the suction generated by the motor assembly 61 will not reach the sewage bucket 4. Therefore, no dust will enter the sewage bucket 4.
[0042] Refer specifically to Figure 6As shown in the figure, when the cleaning device of the present invention is in the water absorption mode, after the clean water flows from the clean water bucket 5 to the ground and then washes the dirt through the floor brush assembly 2, rotate the handle 66 to make the contact member 661 contact and conduct with the second switch 65. At this time, the communication part 621 of the conversion device 62 communicates the opening 6011 with the second connection part 604, and the motor assembly 61 is started to generate suction. The sewage enters the recovery pipeline 22 along with the air flow flowing at high speed towards the motor assembly 61, and reaches the sewage bucket 4 along the recovery pipeline 22. Then, the sewage and gas are separated by gravity. The separated gas enters the motor assembly 61 through the opening 6011 of the seat body 60 and is discharged, while the sewage is recovered in the sewage bucket 4 and is processed after the cleaning is completed. During this process, since the opening 6011 is not communicated with the first connection part 603, the suction generated by the motor assembly 61 will not reach the dust bucket 3. Therefore, no sewage will enter the dust bucket 3.
[0043] In this embodiment, the conversion device 62 is used to switch the dust channel and the sewage channel. The present invention is not limited to this. Two motor assemblies can be set to be respectively connected to the dust bucket and the sewage bucket. During operation, the corresponding motor assemblies can be turned on / off, and this solution can also achieve the purpose of separately recovering sewage and dust.
[0044] The cleaning device of the present invention is also provided with a detection device (not shown), and the detection device can be a humidity sensor or a conductive sensor. If the cleaning device of the present invention is in the dust suction mode when it is turned on, the contact member 661 of the handle 66 contacts and conducts with the first switch 64, and the motor assembly 61 is turned on to enter the dust suction mode. During this process, if the detection device detects that there is water on the floor brush assembly 2, the motor assembly 61 is turned off, and the cleaning device of the present invention stops working. At this time, the cleaning device of the present invention will emit a sound or the indicator light will flash to remind the operator that it is in a misoperation state; if the cleaning device of the present invention is in the water absorption mode when it is turned on, the contact member 661 of the handle 66 contacts and conducts with the second switch 65, and the motor assembly 61 is turned on to enter the water absorption mode. During this process, if the detection device detects that there is no water on the floor brush assembly 2, the motor assembly 61 is turned off, and the cleaning device of the present invention stops working. At this time, the cleaning device of the present invention will emit a sound or the indicator light will flash to remind the operator that it is in a misoperation state; if the cleaning device of the present invention is between the water absorption mode and the dust suction mode when it is turned on, since the contact member 661 of the handle 66 is disconnected from both the first switch 64 and the second switch 65, the motor assembly 61 is turned off, and the cleaning device of the present invention does not work. By setting the detection device, the cleaning device of the present invention effectively prevents misoperation from occurring.
[0045] In this embodiment, the cleaning device of the present invention uses the rotation of the handle 66 to switch between the water absorption mode and the dust suction mode. The present invention is not limited to this.
[0046] In another embodiment, the cleaning device of the present invention also automatically switches between the water suction mode and the dust suction mode by providing a detection device (not shown). The cleaning device of the present invention further includes a drive assembly (not shown) connected to the conversion device 62. When the cleaning device of the present invention is powered on, the drive assembly operates to switch the conversion device 62 to the dust suction mode. During this process, if the detection device detects water on the floor brush assembly 2, the drive assembly is activated and drives the conversion device 62 to rotate. At this time, the dust channel is closed and the sewage channel is opened. The cleaning device of the present invention automatically switches to the water suction mode and reminds the operator of the current working mode by making a sound or flashing an indicator light; when the cleaning device of the present invention is in the water suction mode, if the detection device does not detect water on the floor brush assembly 2, the drive assembly is activated and drives the conversion device 62 to rotate. At this time, the sewage channel is closed and the dust channel is opened. The cleaning device of the present invention automatically switches to the dust suction mode and reminds the operator of the current working mode by making a sound or flashing an indicator light.
[0047] When the cleaning device of the present invention is used at home or in a shopping mall, etc., when using the dust suction mode, dust is sucked into the dust bucket 3. When it is necessary to clean with water or suck water, it switches to the water suction mode, and sewage enters the sewage bucket 4. The water and dirt are stored separately and will not be mixed into a muddy object, which is convenient for distinguishing, cleaning, and washing. It solves the problem that the existing vacuum cleaners have only one recovery bucket, and the water and dirt are mixed together, making it difficult to clean, saves the workload and time of the user, and brings a good experience to the user.
[0048] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A cleaning device, characterized in that, it includes a floor brush assembly, a dust bucket, a sewage bucket and a motor assembly. The floor brush assembly is provided with a recovery pipeline connecting the dust bucket and the sewage bucket. The cleaning device has a dust suction mode and a water suction mode. In the dust suction mode, the suction force generated by the motor assembly causes dust to enter the dust bucket through the recovery pipeline. In the water suction mode, the suction force generated by the motor assembly causes sewage to enter the sewage bucket through the recovery pipeline; the cleaning device further includes a conversion device, which controls the passage between the motor assembly and the recovery pipeline to make the cleaner in the water suction mode or the dust suction mode. The conversion device is arranged between the motor assembly, the dust bucket and the sewage bucket. When the conversion device connects / closes the passage between the motor assembly and the dust bucket, it closes / connects the passage between the motor assembly and the sewage bucket; the cleaning device further includes a seat body, a handle for driving the conversion device to rotate, an upper cover assembled to the seat body, a first switch and a second switch assembled to the upper cover. Among them, the motor assembly and the conversion device are assembled to the seat body. The seat body is provided with a base portion, a receiving portion extending from the base portion, and a first connecting portion and a second connecting portion extending from the receiving portion. The base portion is provided with an opening. The receiving portion is provided with a receiving space for receiving the conversion device. The first connecting portion communicates with the dust bucket, and the second connecting portion communicates with the sewage bucket. The conversion device is provided with a through connecting portion, and the connecting portion connects the opening with the first connecting portion or the opening with the second connecting portion. The handle makes the connecting portion connect the opening with the first connecting portion or the opening with the second connecting portion. When the handle contacts the first switch, the connecting portion connects the opening with the first connecting portion. When the handle contacts the second switch, the connecting portion connects the opening with the second connecting portion.
2. The cleaning device according to claim 1, characterized in that, the handle is provided with contact members that are in contact conduction with the first switch and the second switch, and when the contact members are in conduction with the first switch and the second switch, the motor assembly is started.
3. The cleaning device according to any one of claim 2, characterized in that, the cleaning device further includes a detection device. When the cleaning device is in the dust suction mode, if the detection device detects water on the floor brush assembly, the motor assembly is turned off. When the cleaning device is in the water suction mode, if the detection device detects no water on the floor brush assembly, the motor assembly is turned off.
4. The cleaning device according to any one of claim 1, characterized in that, The cleaning device further includes a detection device and a driving component for controlling the rotation of the conversion device. When the cleaning device is in the dust suction mode, if the detection device detects that there is water on the floor brush component, the driving component is activated and drives the conversion device to rotate, so that the cleaning device is switched to the water suction mode. When the cleaning device is in the water suction mode, if the detection device detects that there is no water on the floor brush component, the driving component is activated and drives the conversion device to rotate, so that the cleaning device is switched to the dust suction mode.
5. The cleaning device according to claim 4, wherein, the cleaning device further includes a sealing ring located between the conversion device and the seat body.
6. The cleaning device according to claim 4, wherein, after the dust in the dust bucket is separated and filtered, the separated gas enters the motor assembly through the opening of the seat body for discharge, while the dust and particulate dirt are recovered in the dust bucket.
7. The cleaning device according to claim 4, wherein, the sewage in the sewage bucket is separated by gravity. The separated gas enters the motor assembly through the opening of the seat body for discharge, while the sewage is recovered in the sewage bucket.
8. The cleaning device according to claim 7, wherein, the cleaning device further includes a clean water bucket located on the main body. The clean water bucket is filled with clean water. When there is a cleaning requirement, the water in the clean water bucket will flow out for cleaning.
9. The cleaning device according to claim 7, wherein, the sewage bucket is provided with a first pipeline communicated with the recovery pipeline. The sewage flows into the sewage bucket through the first pipeline. The height of the sewage in the sewage bucket is lower than the height of the liquid outlet of the first pipeline in the sewage bucket.
10. A working method of a cleaning device, the cleaning device is provided with a dust suction mode and a water suction mode, characterized in that: the cleaning device includes a dust bucket for holding dust, a sewage bucket for holding sewage, a detection device for detecting water absorption of the cleaning device, and a conversion device for switching the cleaning device between the dust suction mode and the water suction mode. The cleaning device further includes a conversion device which controls the passage between the motor assembly and the recovery pipeline, so that the cleaner is in the water suction mode or the dust suction mode. The conversion device is arranged between the motor assembly, the dust bucket and the sewage bucket. When the conversion device connects / closes the passage between the motor assembly and the dust bucket, it closes / connects the passage between the motor assembly and the sewage bucket. The cleaning device further includes a floor brush component. The conversion device includes a driving component for driving the conversion device to switch between the dust suction mode and the water suction mode. The working method includes the following steps: When the cleaning device is in the dust suction mode, if the detection device detects that the cleaning device is absorbing water, the conversion device switches the cleaning device from the dust suction mode to the water suction mode; When the cleaning device is in the water suction mode, if the detection device does not detect that the cleaning device is absorbing water, the conversion device switches the cleaning device from the water suction mode to the dust suction mode; When the cleaning device is in the dust suction mode, if the detection device detects that the cleaning device is absorbing water, the conversion device switches the cleaning device from the dust suction mode to the water absorption mode, including: when the cleaning device is in the dust suction mode, if the detection device detects water on the floor brush assembly, the drive assembly is activated and drives the conversion device to rotate, so that the cleaning device is switched to the water absorption mode; When the cleaning device is in the water absorption mode, if the detection device does not detect that the cleaning device is absorbing water, the conversion device switches the cleaning device from the water absorption mode to the dust suction mode, including: when the cleaning device is in the water absorption mode, if the detection device detects that there is no water on the floor brush assembly, the drive assembly is activated and drives the conversion device to rotate, so that the cleaning device is switched to the dust suction mode.
11. The working method of the cleaning device according to claim 10, characterized in that: The cleaning device further includes a motor assembly, and the floor brush assembly is provided with a recovery pipeline connecting the dust bucket and the sewage bucket; wherein when the cleaning device is in the dust suction mode, the suction force generated by the motor assembly causes dust to enter the dust bucket through the recovery pipeline; when the cleaning device is in the water absorption mode, the suction force generated by the motor assembly causes sewage to enter the sewage bucket through the recovery pipeline.
12. The working method of the cleaning device according to claim 11, characterized in that: The detection device is arranged on the floor brush assembly, and if water is detected on the floor brush assembly, it is determined that the cleaning device is absorbing water.
13. The working method of the cleaning device according to claim 10, characterized in that: When the cleaning device is switched from the water absorption mode to the dust suction mode or from the dust suction mode to the water absorption mode, the cleaning device reminds the operator of the current working mode by making a sound or flashing an indicator light.
Citation Information
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