Dust fullness detection device

Abstract

The utility model provides a dust fullness detection device. The dust fullness detection device comprises a mounting pressing block which is arranged on the outer surface of the air duct shell and provided with a containing cavity communicating with the interior of the air duct shell; at least one part of the sliding part is located in the containing cavity, at least the other part of the sliding part extends out of the containing cavity from the end, away from the air duct shell, of the installation pressing block, and the sliding part can move relative to the installation pressing block and can be switched between a first detection state and a second detection state; and the detection switch and the mounting pressing block are arranged at an interval, and when the sliding part is switched from the first detection state to the second detection state, the sliding part triggers the detection switch. The dust fullness detection device solves the problem of poor detection accuracy of the dust fullness detection device in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of sweeping machine equipment, in particular to a dust full detection device. Background Art

[0002] At present, the dust box full dust detection of sweeping machines is mainly achieved in the following ways: one is to detect the dust box by setting an infrared transmitting-receiving tube on the dust box; the other is to detect the dust box full by detecting the changes in the current and wind speed of the dust suction fan. For the first one, the design point is that the inner walls on both sides of the dust inlet hole of the dust box are embedded with infrared detection components. When the garbage accumulated inside the dust box blocks the infrared detection component, the infrared receiving tube does not receive the signal, and it is determined that the dust box is full of garbage. The problem with this implementation method is that when the surface of the component is covered with dust and other garbage, it is easy to affect the judgment accuracy of the detection equipment. As for the second one, the main disadvantage of its design is that when the battery power of the sweeping machine decreases, the battery power supply voltage will also decrease, affecting the power supply voltage of the dust suction fan and thus affecting the parameters such as the fan speed and current, and ultimately affecting the judgment accuracy of the detection equipment.

[0003] Therefore, there is a problem in the prior art that the dust full detection device has poor detection accuracy. Utility Model Content

[0004] The main purpose of the utility model is to provide a dust full detection device to solve the problem of poor detection accuracy of the dust full detection device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a dust full detection device is provided, including: a mounting pressure block, which is arranged on the outer surface of the air duct shell, and the mounting pressure block has an accommodating cavity connected to the interior of the air duct shell; a sliding member, at least a part of the sliding member is located in the accommodating cavity, and at least another part of the sliding member extends out of the accommodating cavity from one end of the mounting pressure block away from the air duct shell, and the sliding member can move relative to the mounting pressure block and switch between a first detection state and a second detection state; a detection switch, the detection switch is arranged at an interval from the mounting pressure block, and when the sliding member switches from the first detection state to the second detection state, the sliding member triggers the detection switch.

[0006] Further, when the sliding member switches from the first detection state to the second detection state, the sliding member moves toward the end where the mounting pressing block is connected to the air duct housing.

[0007] Furthermore, the sliding member includes a main body and a triggering portion, one end of the main body is located in the accommodating cavity, and the other end of the main body extends out of the accommodating cavity and is provided with a triggering portion. When the sliding member is in the second detection state, the triggering portion triggers the detection switch.

[0008] Furthermore, the dust full detection device also includes a reset member, which is arranged in the accommodating cavity, one end of the reset member abuts against the main body, and the other end of the reset member abuts against the mounting block or the air duct shell to provide a reset force for the sliding member to move from the second detection state to the first detection state.

[0009] Furthermore, the main body includes a first section and a second section connected in sequence, the diameter of the second section is larger than the diameter of the first section, one end of the second section away from the first section extends out of the accommodating cavity, and the reset piece is sleeved on the first section and abuts against one end of the second section close to the first section.

[0010] Furthermore, one end of the second section away from the first section has a mounting tongue extending in the axial direction, and the triggering portion is arranged on the mounting tongue.

[0011] Furthermore, the detection switch is arranged below the mounting block, and the trigger portion is a trigger rod arranged on the circumferential side wall of the main body and extending in the radial direction.

[0012] Furthermore, the dust full detection device also includes at least one sealing ring, and the circumferential outer side wall of the sliding part is provided with at least one sealing groove corresponding to the sealing ring.

[0013] Furthermore, the circumferential outer wall of the sliding part is provided with a first anti-rotation structure, and the connecting hole connecting the air duct shell with the accommodating cavity and / or the circumferential inner wall of the accommodating cavity has a second anti-rotation structure that cooperates with the first anti-rotation structure, and one of the first anti-rotation structure and the second anti-rotation structure is an anti-rotation protrusion, and the other is an anti-rotation groove.

[0014] Furthermore, the sliding member has a plurality of trigger positions corresponding to the second detection state, and the detection switch is a multi-stage switch. When the sliding member is in different trigger positions, the triggering degree of the detection switch is different.

[0015] Applying the technical solution of the utility model, the dust full detection device in the present application includes a mounting block, a sliding member, and a detection switch. The mounting block is arranged on the outer surface of the air duct housing, and the mounting block has a receiving cavity connected to the inside of the air duct housing; at least a part of the sliding member is located in the receiving cavity, and at least another part of the sliding member extends out of the receiving cavity from one end of the mounting block away from the air duct housing, and the sliding member can move relative to the mounting block and switch between a first detection state and a second detection state; the detection switch is spaced apart from the mounting block, and when the sliding member switches from the first detection state to the second detection state, the sliding member triggers the detection switch.

[0016] When using the dust full detection device in the present application, since there is a mounting block, the mounting block can be installed on the air duct housing of the sweeper and communicated with the inside of the air duct housing. As the dust and other substances accumulated in the dust box of the sweeper increase, the negative pressure inside the air duct housing will increase. At this time, since the accommodating chamber of the mounting block is communicated with the inside of the air duct housing, the negative pressure in the accommodating chamber will increase, so that the sliding member can move under the action of the pressure change, and then it can switch between the first detection state and the second detection state and realize the slider triggering the detection switch, so as to be able to remind when the dust box is full of dust and other substances. Therefore, since the dust full detection device in the present application does not need to be installed on the dust box, the detection accuracy of the dust full detection device in the present application is higher than the detection method of using infrared transmitting-receiving tubes to realize dust full in the prior art. At the same time, since the movement of the sliding member of the dust full detection device in the present application does not require an external power supply, the dust full detection device in the present application also has higher accuracy than the method of using the current and wind speed changes of the dust suction fan to realize the dust full detection in the prior art. Therefore, the dust full detection device in the present application effectively solves the problem of poor detection accuracy of the dust full detection device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing the positional relationship between a dust full detection device, an air duct housing, and a dust box in a specific embodiment of the present application is shown;

[0019] Figure 2 An exploded view of a dust full detection device in a specific embodiment of the present application is shown;

[0020] Figure 3 Shows Figure 2 A schematic diagram of the positional relationship between the sliding member and the detection switch of the dust full detection device when the sliding member is in a first detection state;

[0021] Figure 4 Shows Figure 2 A schematic diagram of the positional relationship between the sliding member and the detection switch of the dust full detection device when the sliding member is in the second detection state;

[0022] Figure 5 Shows Figure 2 Schematic diagram of the internal structure of the dust full detection device.

[0023] The above drawings include the following reference numerals:

[0024] 10. Mounting block; 11. Accommodating chamber; 20. Air duct housing; 30. Sliding member; 31. Main body; 311. First section; 312. Second section; 313. Mounting tongue; 32. Triggering portion; 33. Sealing groove; 40. Detection switch; 50. Resetting member; 60. Sealing ring; 70. First anti-rotation structure; 71. Second anti-rotation structure; 80. Dust box. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0028] In order to solve the problem of poor detection accuracy of dust full detection devices in the prior art, the present application provides a dust full detection device.

[0029] It should be noted that the dust full detection device in the present application is generally used on a sweeping machine. Of course, the dust full detection device in the present application can also be installed on other devices with dust collection functions for use.

[0030] like Figures 1 to 5 As shown, the dust full detection device in the present application includes a mounting block 10, a sliding member 30 and a detection switch 40. The mounting block 10 is arranged on the outer surface of the air duct housing 20, and the mounting block 10 has a receiving cavity 11 connected to the inside of the air duct housing 20; at least a part of the sliding member 30 is located in the receiving cavity 11, and at least another part of the sliding member 30 extends out of the receiving cavity 11 from one end of the mounting block 10 away from the air duct housing 20, and the sliding member 30 can move relative to the mounting block 10 and switch between a first detection state and a second detection state; the detection switch 40 is spaced apart from the mounting block 10, and when the sliding member 30 switches from the first detection state to the second detection state, the sliding member 30 triggers the detection switch 40.

[0031] When using the dust full detection device in the present application, since there is a mounting block 10, the mounting block 10 can be installed on the air duct housing 20 of the sweeper and communicated with the inside of the air duct housing 20. As the dust and other substances accumulated in the dust box 80 of the sweeper increase, the negative pressure inside the air duct housing 20 will increase. At this time, since the accommodating chamber 11 of the mounting block 10 is communicated with the inside of the air duct housing 20, the negative pressure in the accommodating chamber 11 will increase, so that the sliding member 30 can move under the action of the pressure change, and then can switch between the first detection state and the second detection state and realize the sliding member 30 triggering the detection switch 40, so as to be able to remind when the dust box 80 is full of dust and other substances. Therefore, since the dust full detection device in the present application does not need to be installed on the dust box 80, compared with the dust full detection method using an infrared transmitting-receiving tube in the prior art, the detection accuracy of the dust full detection device of the present application is higher. At the same time, since the movement of the sliding part of the dust full detection device in the present application does not require an external power supply, the dust full detection device in the present application also has higher accuracy compared with the method of detecting the change of the dust suction fan current and wind speed in the prior art to realize the dust full detection. Therefore, the dust full detection device in the present application effectively solves the problem of poor detection accuracy of the dust full detection device in the prior art.

[0032] Optionally, the detection switch 40 is a micro switch.

[0033] like Figure 3 and Figure 4 In a specific embodiment of the present application, when the slider 30 switches from the first detection state to the second detection state, the slider 30 moves toward the end where the mounting block 10 is connected to the air duct housing 20. That is, in this embodiment, when the dust box 80 of the sweeper is full of dust, the slider 30 can move from the first detection state to the second detection state under the negative pressure in the air duct housing 20, thereby triggering the detection switch 40 and giving a prompt. At the same time, in the present application, the detection switch 40 can be connected to a structural signal such as a controller of the sweeper to realize the prompt function.

[0034] Furthermore, in the following embodiments of the present application, generally, when the slider 30 switches from the first detection state to the second detection state, the slider 30 moves toward the end where the mounting block 10 is connected to the air duct housing 20. Of course, in the present application, the triggering mode of the slider 30 and the detection switch 40 can also be opposite, that is, when the slider 30 does not move to the second detection state before the dust box 80 is full of dust, the magnet slider 30 continues to trigger the detection switch 40, and when the dust box 80 is full of dust, the slider 30 moves to the second detection state and no longer triggers the detection switch 40. Therefore, the specific detection logic can be adjusted according to the actual design and use requirements.

[0035] Specifically, Figures 2 to 4As shown, the sliding member 30 includes a main body 31 and a triggering portion 32. One end of the main body 31 is located in the accommodating chamber 11, and the other end of the main body 31 extends out of the accommodating chamber 11 and is provided with the triggering portion 32. When the sliding member 30 is in the second detection state, the triggering portion 32 triggers the detection switch 40. The main body 31 is provided in the present application to seal the accommodating chamber 11, so as to ensure that the main body 31 can slide inside the accommodating chamber 11 when the pressure inside the air duct housing 20 changes, thereby realizing the switching of the sliding member 30 between the first detection state and the second detection state. The purpose of providing the triggering portion 32 is to ensure that the sliding member 30 can accurately trigger the detection switch 40 during the state switching process, thereby ensuring the performance of the dust full detection device.

[0036] Preferably, the dust full detection device further includes a reset member 50, which is disposed in the accommodating cavity 11, one end of the reset member 50 abuts against the main body 31, and the other end of the reset member 50 abuts against the mounting block 10 or the air duct housing 20, so as to provide a reset force for the sliding member 30 to move from the second detection state to the first detection state. By providing the reset member 50, it can be ensured that when the dust box 80 does not reach the dust full state, the sliding member 30 will not move from the first detection state to the second detection state under other forces, thereby ensuring that the sliding member 30 will not mistakenly touch the detection switch 40, thereby ensuring the detection accuracy of the dust full detection device.

[0037] Optionally, the circumferential outer side wall of the sliding member 30 is provided with a first anti-rotation structure 70, and the communicating hole between the air duct housing 20 and the accommodating chamber 11 and / or the circumferential inner side wall of the accommodating chamber 11 has a second anti-rotation structure 71 that cooperates with the first anti-rotation structure 70, and one of the first anti-rotation structure 70 and the second anti-rotation structure 71 is an anti-rotation protrusion, and the other is an anti-rotation groove. By providing the first anti-rotation structure 70 and the second anti-rotation structure 71 that cooperate with each other, the sliding member 30 can be effectively prevented from rotating, thereby ensuring that the triggering portion 32 of the sliding member 30 can align with the detection switch 40 and accurately trigger the detection switch 40.

[0038] In a specific embodiment of the present application, Figures 2 to 5As shown, the main body 31 includes a first section 311 and a second section 312 connected in sequence, the diameter of the second section 312 is greater than the diameter of the first section 311, the end of the second section 312 away from the first section 311 extends out of the accommodating cavity 11, and the reset member 50 is sleeved on the first section 311 and abuts against the end of the second section 312 close to the first section 311. In addition, in this embodiment, the reset member 50 can be a compression spring, that is, a step structure can be formed at the connection between the first section 311 and the second section 312, so as to ensure that the reset member 50 can abut against the step surface. At the same time, in this embodiment, the end of the first section 311 away from the second section 312 can extend into the connecting hole on the air duct housing 20, and the circumferential side wall of the connecting hole has a second anti-rotation structure 71, and in this embodiment, the first anti-rotation structure 70 is a anti-rotation protrusion arranged on the circumferential side wall of the first section 311, and the second anti-rotation structure 71 is an anti-rotation groove, and there are multiple anti-rotation protrusions and anti-rotation grooves, and multiple anti-rotation protrusions are arranged at intervals around the circumferential side wall of the first section 311. It should also be noted that, at this time, the compression spring can abut against the outer surface of the air duct housing 20 or the end of the mounting pressure block 10 close to the air duct housing 20 has a flange abutting against the compression spring.

[0039] Optionally, the second section 312 has a mounting tongue 313 extending axially at one end away from the first section 311, and the trigger portion 32 is disposed on the mounting tongue 313. By such an arrangement, when the sliding member 30 switches between the first detection state and the second detection state, interference between the trigger portion 32 and the mounting block 10 can be effectively avoided.

[0040] Optionally, the detection switch 40 is disposed below the mounting block 10, and the trigger portion 32 is a trigger rod disposed on the circumferential side wall of the body portion 31 and extending radially. Of course, in the present application, the detection switch 40 can also be disposed at other positions, as long as the trigger rod can trigger the detection switch 40.

[0041] Optionally, the dust full detection device further includes at least one sealing ring 60, and the circumferential outer side wall of the sliding member 30 is provided with at least one sealing groove 33 corresponding to the sealing ring 60. This arrangement can effectively prevent air leakage from occurring at the end of the mounting block 10 away from the air duct housing 20, thereby further effectively ensuring the detection accuracy of the dust full detection device.

[0042] Optionally, the slider 30 has multiple trigger positions corresponding to the second detection state, and the detection switch 40 is a multi-stage switch. When the slider 30 is in different trigger positions, the triggering degree of the detection switch 40 is different. In the present application, since the dust box is gradually filled, the negative pressure inside the air duct housing 20 gradually changes when the dust box is gradually filled, so the slider 30 can be gradually moved. Therefore, when the detection switch 40 is a multi-stage switch, the slider 30 can continuously trigger the detection switch 40 and the triggering degree of the detection switch 40 by the slider 30 can be gradually increased, thereby ensuring that the dust full detection device in the present application can not only monitor and prompt when the dust box is full of dust, but also monitor the dust fullness inside the dust box.

[0043] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0044] 1. Effectively solve the problem of poor detection accuracy of dust fullness detection devices in the prior art;

[0045] 2. Simple structure and stable performance.

[0046] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0047] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dust fullness detection device, characterized in that: include: A mounting block (10), the mounting block (10) being arranged on the outer surface of the air duct housing (20), and the mounting block (10) having a receiving cavity (11) communicating with the interior of the air duct housing (20); a sliding member (30), at least a portion of the sliding member (30) being located in the accommodating cavity (11), at least another portion of the sliding member (30) extending out of the accommodating cavity (11) from an end of the mounting pressing block (10) away from the air duct housing (20), and the sliding member (30) being capable of moving relative to the mounting pressing block (10) and switching between a first detection state and a second detection state; A detection switch (40) is arranged at a distance from the mounting block (10), and when the sliding member (30) switches from the first detection state to the second detection state, the sliding member (30) triggers the detection switch (40).

2. The dust full detection device according to claim 1, characterized in that: When the sliding member (30) switches from the first detection state to the second detection state, the sliding member (30) moves toward one end of the mounting pressing block (10) connected to the air duct housing (20).

3. The dust full detection device according to claim 1, characterized in that: The sliding member (30) comprises a main body (31) and a triggering portion (32); one end of the main body (31) is located in the accommodating cavity (11); the other end of the main body (31) extends out of the accommodating cavity (11) and is provided with the triggering portion (32); when the sliding member (30) is in the second detection state, the triggering portion (32) triggers the detection switch (40).

4. The dust full detection device according to claim 3, characterized in that: The dust full detection device also includes a reset member (50), which is arranged in the accommodating cavity (11), one end of the reset member (50) abuts against the main body (31), and the other end of the reset member (50) abuts against the mounting block (10) or the air duct housing (20) to provide a reset force for the sliding member (30) to move from the second detection state to the first detection state.

5. The dust full detection device according to claim 4, characterized in that: The main body (31) comprises a first section (311) and a second section (312) connected in sequence, the diameter of the second section (312) is larger than the diameter of the first section (311), one end of the second section (312) away from the first section (311) extends out of the accommodating cavity (11), and the reset member (50) is sleeved on the first section (311) and abuts against one end of the second section (312) close to the first section (311).

6. The dust full detection device according to claim 5, characterized in that: An end of the second section (312) away from the first section (311) has a mounting tongue (313) extending in the axial direction, and the trigger portion (32) is arranged on the mounting tongue (313).

7. The dust full detection device according to claim 3, characterized in that: The detection switch (40) is arranged below the mounting pressing block (10), and the trigger portion (32) is a trigger rod arranged on the circumferential side wall of the main body portion (31) and extending in the radial direction.

8. The dust full detection device according to any one of claims 1 to 7, characterized in that: The dust full detection device further comprises at least one sealing ring (60), and the circumferential outer side wall of the sliding member (30) is provided with at least one sealing groove (33) corresponding to the sealing ring (60).

9. The dust full detection device according to any one of claims 1 to 7, characterized in that: The circumferential outer wall of the sliding member (30) is provided with a first anti-rotation structure (70), and the connecting hole connecting the air duct housing (20) with the accommodating chamber (11) and / or the circumferential inner wall of the accommodating chamber (11) has a second anti-rotation structure (71) that cooperates with the first anti-rotation structure (70), and one of the first anti-rotation structure (70) and the second anti-rotation structure (71) is an anti-rotation protrusion, and the other is an anti-rotation groove.

10. The dust full detection device according to any one of claims 1 to 7, characterized in that: The sliding member (30) has a plurality of trigger positions corresponding to the second detection state, and the detection switch (40) is a multi-stage switch. When the sliding member (30) is in different trigger positions, the triggering degree of the detection switch (40) is different.

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