CN115813258A - Safety switch protection architecture and have its desktop dust catcher - Google Patents

Abstract

The invention discloses a safety switch protection structure and a desktop dust collector with the same, wherein the safety switch protection structure comprises: an upper cover; the middle assembly is connected with the upper cover to form a space suitable for installing the battery; the bottom cover is connected with the middle assembly to form a dust suction cavity; the middle assembly is provided with a touch part and a safety switch for controlling the opening and closing of the motor, and when the upper cover and the bottom cover are both connected with the middle assembly, the touch part triggers the safety switch to enable the safety switch to control the motor to be in an openable state; when at least one of the upper cover and the bottom cover is disconnected with the middle assembly, the touch piece is disconnected with the safety switch, so that the safety switch control motor is in a closed state. The invention provides a safety switch protection structure, which enables a single safety switch to be used as a protection element of an upper cover and a bottom cover at the same time by arranging a touch piece.

Description

Safety switch protection architecture and have its desktop dust catcher

Technical Field

The invention relates to the technical field of dust collectors, in particular to a safety switch protection structure and a desktop dust collector with the same.

Background

The desktop dust collector is a dust removing device which is small in size and can be held by a single hand, and the working principle of the desktop dust collector is that a motor in the desktop dust collector drives an impeller to work, the impeller generates air flow from bottom to top, sundries on a working surface are wrapped by the air flow and enter a dust collecting cavity, and a filter screen in the dust collecting cavity intercepts the sundries to achieve the purpose of collecting dust. When the filter screen is detached to clean impurities, if the starting switch is touched by mistake, the rotating impeller can cause damage to a user. To avoid this, the following two schemes are generally adopted:

one solution is disclosed in chinese utility model patent No. CN212281187U, which discloses a dust suction device and a dust collector having the same, wherein a limit component adapted to limit rotation of an impeller is additionally provided. This kind of simple structure, but have spacing subassembly and impeller outer lane because of assaulting the impaired problem of impeller that causes.

Another solution is, for example, in the chinese utility model patent with publication number CN213488591U, disclosed a handheld vacuum cleaner, which is provided with a first switch for controlling the suction assembly to stop working when the bottom cover is separated from the upper cover. The scheme realizes safety protection by controlling the on-off of the circuit, has strong reliability and is the prior and generally adopted technology. In the existing three-section type desktop dust collector, a space formed by covering an upper cover and a middle assembly is used for installing a detachable battery, and a space formed by a bottom cover and the middle assembly is a dust suction cavity. Based on the scheme, two safety switches connected in series are generally arranged on the middle assembly, the triggering mechanism of one safety switch is the connection or disconnection of the upper cover and the middle assembly, and the triggering mechanism of the other safety switch is the connection or disconnection of the bottom cover and the middle assembly. Two safety switch schemes are high in cost, and how to further improve the schemes is a technical problem which needs to be solved urgently by related technical personnel.

Disclosure of Invention

The present invention is directed to solving, at least in part, one of the technical problems in the related art. Therefore, the invention provides a safety switch protection structure, which enables a single safety switch to be used as a protection element of an upper cover and a bottom cover at the same time by arranging a touch piece, thereby replacing the scheme of double safety switches in the prior art and reducing the cost.

The invention also provides a desktop dust collector with the safety switch protection structure.

The technical scheme adopted by the invention is as follows: there is provided a safety switch protection structure including:

an upper cover;

the middle assembly is connected with the upper cover to form a space suitable for installing a battery;

the bottom cover is connected with the middle assembly to form a dust suction cavity;

the middle assembly is provided with a touch part and a safety switch for controlling the opening and closing of the motor, and when the upper cover and the bottom cover are both connected with the middle assembly, the touch part triggers the safety switch to enable the safety switch to control the motor to be in an openable state; when at least one of the upper cover and the bottom cover is disconnected with the middle assembly, the touch piece is disconnected with the safety switch, and the safety switch controls the motor to be in a closed state.

After adopting above structure, the safety switch can be used as the protective element of upper cover and bottom simultaneously. Namely, the upper cover is taken down when the battery is replaced, and the motor stops working; when the bottom cover is taken down and the dust suction cavity is opened, the motor stops working, and the desktop dust collector is protected. The double safety switches in the prior art are connected in series, the failure rate of the double safety switches is the superposition of the failure rates of the single safety switches, and compared with the double safety switch scheme, the single safety switch scheme can reduce the cost and the failure rate of the desktop dust collector.

According to one embodiment of the invention, the trigger member has two ends and a first and a second trigger end, respectively, the first trigger end being pivotable with respect to the intermediate assembly between a first and a second position, and the second trigger end being pivotable with respect to the intermediate assembly between a third and a fourth position.

According to an embodiment of the invention, when the first trigger end is located at the second position and the second trigger end is located at the fourth position, the trigger member triggers the safety switch, so that the safety switch controls the motor to be in an openable state, that is, the table top vacuum cleaner can be used normally.

According to one embodiment of the invention, said upper cover has a first abutment protuberance which, when said upper cover is coupled with said intermediate component, abuts against said first triggering end, keeping it in the second position; when the upper cover is connected with the middle assembly in a positioning mode, the first abutting-against bulge rotates to a preset position and abuts against the contact piece.

According to an embodiment of the present invention, a second positioning protrusion is disposed on the first trigger end, a width of the second positioning protrusion in the width direction of the first trigger end is smaller than a width of the first trigger end, a width of the first abutting protrusion is not greater than a width of the second positioning protrusion, and when the first abutting protrusion abuts against the second positioning protrusion, the first trigger end is located at the second position.

According to one embodiment of the invention, the bottom cover has a second abutment projection that abuts the second initiation end when the bottom cover is coupled to the intermediate assembly, leaving the second initiation end retained in a fourth position.

According to one embodiment of the invention, the intermediate component is provided with a first limit protrusion and a second limit protrusion at intervals, and the first trigger end swings between the first limit protrusion and the second limit protrusion.

According to an embodiment of the present invention, the first trigger end located at the first position abuts against the second limit protrusion.

According to one embodiment of the invention, an elastic member is arranged between the touch member and the safety switch, and the elastic member has an elastic tendency of limiting the touch member from triggering the safety switch.

A desktop dust collector comprises any one of the safety switch protection structures.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a tabletop cleaner in an embodiment of the present invention;

FIG. 2 is an exploded view of a tabletop vacuum cleaner in an embodiment of the present invention;

FIG. 3 is a side view of a table top vacuum in an embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

FIG. 6 is a perspective view of the tabletop cleaner with the upper cover removed in an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a perspective view of the tabletop cleaner with the upper cover and the middle cover removed in an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion of FIG. 8 at D;

FIG. 10 is a perspective view of a tabletop cleaner shown with the first trigger end in a first position in accordance with an embodiment of the invention;

FIG. 11 is an enlarged view of a portion of FIG. E;

FIG. 12 is a perspective view of the upper cover in the embodiment of the present invention;

FIG. 13 is a bottom view of a bracket according to an embodiment of the present invention;

FIG. 14 is an enlarged view of a portion of FIG. 13 at F;

FIG. 15 is a perspective view of a bottom cover in an embodiment of the present invention;

FIG. 16 is a schematic view of the connection of the trip unit to the safety switch when both the top cover and the bottom cover are disconnected from the middle assembly according to the embodiment of the present invention;

FIG. 17 is a schematic view of the connection between the trigger and the safety switch when the upper lid is disconnected from the middle assembly and the lower lid is connected to the middle assembly according to the embodiment of the present invention;

FIG. 18 is a schematic view of the connection between the trigger and the safety switch when the upper cover and the lower cover are both connected to the middle assembly according to the embodiment of the present invention;

FIG. 19 is a perspective view of the trip member in an embodiment of the present invention.

The reference numbers in the figures illustrate:

1. an upper cover; 2. a support; 3. a bottom cover; 4. a middle cover; 5. a switch button; 6. starting a switch; 7. a motor; 8. a touch member; 9. a safety switch; 10. an elastic member;

11. a first abutment projection;

21. a support portion; 22. a first limit protrusion; 23. a second limit bulge; 24. a first positioning projection;

41. a protection part; 42. fitting gaps;

31. a second abutment projection;

81. a first trigger terminal; 82. a second trigger terminal; 83. a trigger protrusion;

81a and a second positioning bulge; 81b, contact ramp.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the present embodiment, the openable and closable state of the motor 7 specifically means that the circuit of the motor 7 is connected, and the start switch 6 on the circuit directly controls the start and stop of the motor 7. The motor 7 is in the off state, specifically, the circuit of the motor 7 is disconnected, the motor 7 in the working state is directly stopped, and the starting switch 6 cannot directly control the starting and stopping of the motor 7.

As shown in fig. 1 to 6, in the present embodiment, a protection structure of a safety switch 9 is disclosed, which includes:

an upper cover 1;

the middle component is connected with the upper cover 1 to form a space suitable for installing a battery;

the bottom cover 3, the bottom cover 3 and the middle assembly are connected to form a dust suction cavity;

the middle assembly is provided with a touch part 8 and a safety switch 9 for controlling the opening and closing of the motor 7, when the upper cover 1 and the bottom cover 3 are both connected with the middle assembly, the touch part 8 triggers the safety switch 9, and the safety switch 9 controls the motor 7 to be in an openable state; when at least one of the upper cover 1 and the bottom cover 3 is disconnected with the middle assembly, the touch piece 8 is disconnected with the safety switch 9, so that the safety switch 9 controls the motor 7 to be in a closed state.

Specifically, as shown in fig. 2 to 4, in the present embodiment, the middle assembly includes a bracket 2 and a middle cover 4, a bottom of the bracket 2 is rotatably connected to the bottom cover 3 to form a dust suction chamber, and the middle cover 4 is fixedly connected to the bracket 2. The motor 7 is fixedly arranged in a space formed by covering the bracket 2 and the middle cover 4, and a motor shaft extends out of the bottom of the bracket 2 and is connected with an impeller. The impeller is located the dust absorption intracavity, and the filter screen is connected with the bottom detachably of support 2, and the filter screen encircles the circumference setting of impeller. The upper cover 1 is rotatably connected with the middle cover 4, and a battery chamber for installing a battery is formed at the upper end of the middle cover 4.

Specifically, as shown in fig. 19, a trigger protrusion 83 is formed on the trigger 8 extending toward one side of the safety switch 9, and the trigger protrusion 83 is disposed corresponding to a switch position on the push button type safety switch 9. That is, when the trigger projection 83 abuts against the switch position, the safety switch 9 is turned on, and when the trigger projection 83 is turned off from the switch position, the safety switch 9 is turned off.

Specifically, referring to fig. 16, the upper cover 1 is disconnected from the middle cover 4, the bottom cover 3 is disconnected from the bracket 2, the first trigger end 81 is located at the first safety position, the second trigger end 82 is located at the third safety position, and the trigger protrusion 83 is spaced from the safety switch 9.

Further, the two ends of the trigger 8 are respectively connected to the first trigger end 81 and the second trigger end 82, the first trigger end 81 swings between the first position and the second position relative to the intermediate assembly, and the second trigger end 82 swings between the third position and the fourth position relative to the intermediate assembly.

Specifically, referring to fig. 17, the upper cover 1 is disconnected from the middle cover 4, the bottom cover 3 is connected to the bracket 2, the second trigger end 82 moves toward the safety switch 9, and the first trigger end 81 moves away from the safety switch 9. The first trigger end 81 is located at the first position and the second trigger end 82 is located at the fourth position.

Further, as shown in fig. 13 to 15, the bottom cover 3 has a second abutting projection 31, and when the bottom cover 3 is connected to the intermediate assembly, the second abutting projection 31 abuts against the second triggering end 82, so that the second triggering end 82 is maintained at the fourth position.

Specifically, the inner wall of the bottom cover 3 is rotatably connected with the outer wall of the bottom end of the bracket 2, and the second abutting protrusion 31 is arranged at an interval with the inner wall of the bottom cover 3. An annular groove that fits the second abutment projection 31 is provided in the bottom surface of the holder 2. The second abutment projection 31 is located on one side of the annular groove, and the first positioning projection 24 is provided on the other side of the annular groove. When the bottom cover 3 is connected with the bracket 2 in a positioning manner, the second abutting protrusion 31 abuts against the first positioning protrusion 24, so that the bottom cover 3 is tightly connected with the bracket 2, and a section feeling is formed, which prompts a user that the bottom cover 3 and the bracket 2 are connected to a preset position. At this time, the second abutting projection 31 abuts against the second triggering end 82, so that the second triggering end 82 moves from the third position to the fourth position.

Further, when the first trigger end 81 is located at the second position and the second trigger end 82 is located at the fourth position, the trigger 8 triggers the safety switch 9, so that the safety switch 9 controls the motor 7 to be in an openable state, that is, the table top vacuum cleaner can be used normally.

Specifically, referring to fig. 18, the first trigger end 81 is located at the second position, the second trigger end 82 is located at the fourth position, and the trigger protrusion 83 abuts against the switch position on the safety switch 9.

Further, as shown in fig. 6 to 7 and fig. 12, the upper cover 1 has a first abutting projection 11, when the upper cover 1 is connected with the intermediate component, the first abutting projection 11 abuts against the first triggering end 81, so that the first triggering end 81 is kept at the second position.

Specifically, the first triggering end 81 of the triggering member 8 extends upward from the bracket 2, and the middle cover 4 is provided with a protecting portion 41 corresponding to the first triggering end 81, and the first triggering end 81 is located in the protecting portion 41 and can move between a first position and a second position. One side of the protection part 41 is provided with an opening from which the first activation end 81 protrudes.

Further, the inner wall of the upper cover 1 is rotatably connected with the outer wall of the middle cover 4, and the first abutting protrusions 11 are arranged at intervals with the inner wall of the upper cover 1. The protection part 41 forms a fitting gap 42 with the inner wall of the middle cover 4, and the opening on the protection part 41 is located on one side of the fitting gap 42. When the upper cover 1 is connected with the middle cover 4 in a positioning manner, the first abutting protrusion 11 abuts against the first triggering end 81, so that the first triggering end 81 moves from a side far away from the safety switch 9 to a side close to the safety switch 9, that is, the first triggering end 81 moves from the first position to the second position.

Further, as shown in fig. 8 to 11, a second positioning protrusion 81a is disposed on the first triggering end 81, a width of the second positioning protrusion 81a along a width direction of the first triggering end 81 is smaller than a width of the first triggering end 81, a width of the first abutting protrusion 11 is not greater than a width of the second positioning protrusion 81a, and when the first abutting protrusion 11 abuts against the second positioning protrusion 81a, the first triggering end 81 is located at the second position.

Specifically, when the upper cover 1 is connected with the middle cover 4 in a positioning manner, the second positioning protrusion 81a abuts against the first triggering end 81, so that the upper cover 1 is tightly connected with the middle cover 4.

Further, the intermediate assembly is provided with a first limiting protrusion 22 and a second limiting protrusion 23 at intervals, and the first trigger end 81 swings between the first limiting protrusion 22 and the second limiting protrusion 23.

Specifically, as shown in fig. 8 and 9, in the present embodiment, two supporting portions 21 are formed by extending the upper end of the bracket 2 upward, the two supporting portions 21 are arranged in parallel and spaced, and the first limiting protrusion 22 and the second limiting protrusion 23 are respectively located at two sides of the upper end of each supporting portion 21. The end surface of the supporting part 21 between the first limiting bulge 22 and the second limiting bulge 23 is in arc transition. The first trigger end 81 extends to two sides along the width direction to form an extension shaft structure, and the extension shaft structure moves between the first limiting protrusion 22 and the second limiting protrusion 23.

Further, as shown in fig. 10 and 11, the first trigger end 81 located at the first position abuts against the second limit projection 23.

Specifically, a contact inclined surface 81b is provided on the extension shaft structure on the first trigger end 81, and the contact inclined surface 81b is used for abutting against the second limiting protrusion 23.

Further, as shown in fig. 16 to 18, an elastic member 10 is disposed between the triggering member 8 and the safety switch 9, and the elastic member 10 has an elastic tendency of limiting the triggering of the safety switch 9 by the triggering member 8.

Further, in this embodiment, one end of the elastic element 10 abuts against the safety switch 9, and the other end is sleeved on the periphery of the triggering protrusion 83.

Referring to fig. 1 to 4, in another embodiment, a table top vacuum cleaner is disclosed, which includes a protection structure of a safety switch 9 in this embodiment.

Specifically, in another embodiment, the top end of the upper cover 1 is provided with a switch button 5, the middle cover 4 is provided with a start switch 6, and the switch button 5 abuts against the start switch 6. The switch button 5 is pressed to trigger the starting switch 6, and the starting switch 6 is connected with the safety switch 9 in series.

In another embodiment, the desktop cleaner operates as follows:

when the upper cover 1 is connected with the middle cover 4 and the bottom cover 3 is connected with the bracket 2, the touch part 8 triggers the safety switch 9, the safety switch 9 controls the motor 7 to be in an openable state, the starting switch 6 is pressed, the motor 7 works to drive the impeller to rotate, the impeller generates airflow from bottom to top, the airflow wraps impurities on a working surface and enters the dust absorption cavity, and the filter screen in the dust absorption cavity intercepts the impurities. The start switch 6 is pressed again and the motor 7 stops working. At this time, when the upper cover 1 and the middle cover 4 rotate relatively and/or the bottom cover 3 and the bracket 2 rotate relatively, the touch part 8 is disconnected from the safety switch 9, the safety switch 9 controls the motor 7 to be in a closed state, and the motor 7 stops working.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A safety switch protection architecture comprising:

an upper cover (1);

the middle assembly is connected with the upper cover (1) to form a space suitable for installing a battery;

the bottom cover (3) is connected with the middle assembly to form a dust suction cavity;

the electric switch is characterized in that a touch part (8) and a safety switch (9) for controlling the opening and closing of a motor (7) are installed on the middle assembly, when the upper cover (1) and the bottom cover (3) are both connected with the middle assembly, the touch part (8) triggers the safety switch (9), and the safety switch (9) controls the motor (7) to be in an openable state; when at least one of the upper cover (1) and the bottom cover (3) is disconnected with the middle assembly, the triggering part (8) is disconnected with the safety switch (9), and the safety switch (9) controls the motor (7) to be in a closed state.

2. A safety switch protection architecture as claimed in claim 1, wherein: the two ends of the trigger piece (8) respectively with a first trigger end (81) and a second trigger end (82), the first trigger end (81) for the intermediate assembly swing between a first position and a second position, the second trigger end (82) for the intermediate assembly swing between a third position and a fourth position.

3. A safety switch protection architecture as claimed in claim 2, wherein: when the first trigger end (81) is located at the second position and the second trigger end (82) is located at the fourth position, the trigger piece (8) triggers the safety switch (9).

4. A safety switch protection architecture as claimed in claim 3, wherein: the upper cover (1) is provided with a first abutting bulge (11), when the upper cover (1) is connected with the intermediate assembly, the first abutting bulge (11) is abutted to the first triggering end (81), and the first triggering end (81) is kept at the second position.

5. A safety switch protection architecture as claimed in claim 4, wherein: be equipped with protruding (81 a) in second location on first trigger end (81), protruding (81 a) in second location is followed first trigger end (81) width direction's width is less than the width of first trigger end (81), the width of first butt arch (11) is not more than the width of second location arch (81 a), works as protruding (11) in first butt with when protruding (81 a) in second location offset, first trigger end (81) are located the second position.

6. A safety switch protection architecture as claimed in claim 3, wherein: the bottom cover (3) has a second abutment protuberance (31), said second abutment protuberance (31) being such as to abut against the second activation end (82) when the bottom cover (3) is connected to the intermediate assembly, keeping the second activation end (82) in a fourth position.

7. A safety switch protection architecture as claimed in claim 2, wherein: the middle assembly is provided with a first limiting protrusion (22) and a second limiting protrusion (23) at intervals, and the first trigger end (81) swings between the first limiting protrusion (22) and the second limiting protrusion (23).

8. A safety switch protection architecture as claimed in claim 7, wherein: the first trigger end (81) at the first position is abutted against the second limit protrusion (23).

9. A safety switch protection architecture according to any one of claims 1 to 8, wherein: an elastic piece (10) is arranged between the touch piece (8) and the safety switch (9), and the elastic piece (10) has an elastic trend of limiting the touch piece (8) to trigger the safety switch (9).

10. A desktop dust catcher which characterized in that: comprising a safety switch (9) protection arrangement according to any of claims 1-9.

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