A dustproof backflow hand vacuum cleaner

Abstract

The utility model discloses a handheld dust collector of dustproof backflow relates to dust collector technical field, and it is connected in the front end of main part through joint screw thread including: main part, internal integration dust absorption space, dust absorption pipe, dust collection part, filter screen, the inside vertical installation of main part, the inside installation of main part has the drive assembly of being located filter screen rear, the inside connection of main part has knock vibration subassembly, the inside connection of main part has the protection assembly of being located dust absorption pipe one end, the utility model discloses a thrust part is constructed to one end of joint, makes when connecting and tightening dust absorption pipe, the joint of one end can push away baffle through thrust part, baffle will stretch elastic member no.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a handheld vacuum cleaner that prevents dust backflow. Background Technology

[0002] Vacuum cleaners can be classified into upright, canister, and portable types based on their structure. The working principle of a vacuum cleaner is that an electric motor drives blades to rotate at high speed, creating negative air pressure within a sealed casing to suck up dust and debris.

[0003] Referring to existing patent publication number CN222018213U, a handheld vacuum cleaner with dust backflow prevention includes a vacuum cleaner body, a hand handle fixedly installed on one side of the vacuum cleaner body, a suction mechanism fixedly installed on the top of the other side of the vacuum cleaner body, a connecting mechanism fixedly installed on the top inside the vacuum cleaner body, and a filter mechanism detachably installed in the middle of the vacuum cleaner body. Through the configured suction mechanism, connecting mechanism, and driving mechanism, the driving mechanism can reduce the air pressure inside the top and bottom chambers, thereby causing the suction pipe to suck in dust.

[0004] However, although the aforementioned patent can prevent dust backflow through the baffle, the vacuum cleaner still needs to overcome the weight of the baffle and suck it open when it is in operation. This not only affects the normal operation of the vacuum cleaner but also increases its burden. At the same time, as the core filtration component, the filter is easily covered by dust after long-term use, which leads to a decrease in suction power. It lacks a certain automatic cleaning mechanism and requires manual disassembly and cleaning of the filter, which is cumbersome and easily damages the filter. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a handheld vacuum cleaner that prevents dust backflow. This invention features a thrust-resistant part at one end of the connector. When the vacuum hose is tightened, the thrust-resistant part pushes open the baffle, causing the baffle to stretch the elastic element and open the opening to maintain normal airflow and reduce the load on the vacuum cleaner during operation. When the vacuum cleaner stops operating, the connector can be loosened by a certain distance, allowing the baffle to close against the opening under the action of the elastic element, preventing dust backflow.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A handheld vacuum cleaner that prevents dust backflow, comprising:

[0008] The main body has an integrated dust collection space inside;

[0009] A vacuum hose, which is threadedly connected to the front end of the main body via a connector;

[0010] The dust collection unit is detachably connected to the lower part of the main body;

[0011] The filter screen is vertically installed inside the main body;

[0012] The main body has a drive assembly installed inside, located behind the filter; a vibration assembly connected inside the main body; and a protective assembly connected inside the main body, located at one end of the suction pipe.

[0013] The present invention is further configured such that the drive assembly includes: a through hole, a negative pressure fan, and negative pressure blades;

[0014] All the through holes are opened on the back of the main body, the negative pressure fan is installed inside the main body, and the negative pressure blades are installed at the output end of the negative pressure fan.

[0015] The present invention is further configured such that the vibration assembly includes: a rotating rod, an elastic element, a striking part, and a guiding part;

[0016] The rotating rod is horizontally connected inside the main body, and the striking parts are all connected to the surface of the rotating rod through an elastic element. The guide parts are all installed on the surface of the rotating rod.

[0017] The present invention is further configured such that the striking part contacts the filter screen.

[0018] The present invention is further configured such that the width of the guide portion is less than the length of the elastic element.

[0019] The present invention further provides that the protective component includes: a mounting groove, an elastic element two, and a baffle;

[0020] The mounting groove is constructed inside the main body, the second elastic element is connected inside the mounting groove, and the baffle is installed on the movable end of the second elastic element.

[0021] The present invention is further configured such that the baffle is fitted to the main body.

[0022] The present invention is further configured such that the cross-sectional area of ​​the baffle is greater than the cross-sectional area of ​​the joint.

[0023] The present invention is further configured such that one end of the connector is connected to a protruding thrust portion.

[0024] The present invention is further configured such that the vibration component is located above the dust collection section.

[0025] The beneficial effects of this utility model are as follows: By constructing a thrust part at one end of the connector, when the vacuum cleaner hose is connected and tightened, the connector at one end can push the baffle open through the thrust part. At this time, the baffle will stretch the elastic element two and open the opening to maintain normal airflow and reduce the load on the vacuum cleaner during operation. Then, when the operation stops, the connector can be loosened by a certain distance so that the baffle can fit with the opening under the action of the elastic element two, preventing dust backflow.

[0026] 1. This handheld vacuum cleaner with dust backflow prevention is equipped with a thrust member that works in conjunction with a protective component. When the vacuum hose is connected and tightened, the connector at one end can push the baffle open through the thrust member. At this time, the baffle will stretch the elastic element and open the opening to maintain normal airflow and reduce the load on the vacuum cleaner during operation. Then, when the operation stops, the connector can be loosened by a certain distance so that the baffle can fit with the opening under the action of the elastic element, thus preventing dust backflow.

[0027] 2. This handheld vacuum cleaner with dust backflow prevention is equipped with a knocking component. When the vacuum cleaner is operating, the negative pressure airflow generated by the airflow will cause the guide section to rotate. At this time, the knocking part connected to the guide section and the rotating rod can move together. Thus, when the vacuum cleaner is operating, the knocking part can adaptively knock the filter screen in a cycle to create a certain knocking effect on the filter screen, reduce the accumulation and adhesion of dust on its surface, avoid the decrease in suction power, and reduce the cleaning intensity of personnel. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a handheld vacuum cleaner that prevents dust backflow, as proposed in this utility model.

[0029] Figure 2 This is a first cross-sectional view of a handheld vacuum cleaner with dust backflow prevention proposed in this utility model.

[0030] Figure 3 This is a second orthographic structural diagram of a handheld vacuum cleaner with dust backflow prevention proposed in this utility model;

[0031] Figure 4 This is a side sectional view of a handheld vacuum cleaner designed to prevent dust backflow, as proposed in this utility model.

[0032] Figure 5 This utility model proposes a handheld vacuum cleaner that prevents dust backflow. Figure 2 A magnified structural diagram of point A in the middle.

[0033] In the diagram: 1. Main body; 2. Suction pipe; 3. Dust collection section; 4. Through hole; 5. Negative pressure fan; 6. Negative pressure blades; 7. Filter screen; 8. Baffle; 9. Rotating rod; 10. Striking part; 11. Elastic component one; 12. Guide part; 13. Connector; 14. Thrust part; 15. Elastic component two; 16. Mounting groove. Detailed Implementation

[0034] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0035] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0036] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0037] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0038] Reference Figures 1 to 5A handheld vacuum cleaner with dust backflow prevention includes: a main body 1, which integrates a suction space inside; a suction tube 2, which is threadedly connected to the front end of the main body 1 via a connector 13 to provide a suction channel for the vacuum cleaner, thereby reaching different suction areas; a dust collection unit 3, which is detachably connected to the lower part of the main body 1, for collecting dust and other substances absorbed after the vacuum cleaner has been operating; a filter 7, which is vertically installed inside the main body 1, and the filter 7 can block and trap the absorbed dust and impurities, thereby achieving a suction effect; a drive component located behind the filter 7 is installed inside the main body 1, and the drive component provides power to the vacuum cleaner. The operation of the drive component generates a negative pressure airflow. A knocking component is connected inside the main body 1, and the drive component drives the knocking component to periodically knock the filter 7, causing the dust attached to the surface of the filter 7 to fall off and fall into the dust collection unit 3, preventing the filter 7 from clogging and maintaining stable suction; a protective component is connected inside the main body 1 at one end of the suction tube 2, and the protective component is used to prevent dust backflow when the vacuum cleaner stops operating.

[0039] Specifically, refer to Figures 2 to 3 The driving components include: through holes 4, negative pressure fan 5, and negative pressure blades 6; the through holes 4 are all opened on the back of the main body 1, the negative pressure fan 5 is installed inside the main body 1, and the negative pressure blades 6 are installed at the output end of the negative pressure fan 5. In this embodiment, after the negative pressure fan 5 is started, the negative pressure blades 6 rotate at high speed, forming a negative pressure environment inside the main body 1. Dust is sucked into the dust collection part 3 through the dust suction pipe 2, and the through holes 4 are used for air circulation.

[0040] Specifically, refer to Figures 2 to 4 The vibration assembly includes: a rotating rod 9, an elastic element 11, a striking part 10, and a guide part 12. The rotating rod 9 is horizontally connected inside the main body 1. The striking parts 10 are all connected to the surface of the rotating rod 9 through the elastic element 11. The guide parts 12 are all installed on the surface of the rotating rod 9. Furthermore, the striking part 10 contacts the filter screen 7. Through this design, due to the generation of a negative pressure airflow with a certain intensity, the airflow will also drive the guide part 12 to rotate. At this time, the striking part 10 connected to the rotating rod with the guide part 12 can move together. Thus, when the vacuum cleaner is operating, the striking part 10 can adaptively and cyclically strike the filter screen 7 to create a certain vibration effect on the filter screen 7, reduce the accumulation and adhesion of dust on its surface, avoid the decrease in suction power, and reduce the cleaning intensity of personnel.

[0041] Furthermore, the width of the guide portion 12 is less than the length of the elastic element 11. This design allows the guide portion 12 to interact better with the negative pressure airflow to guide the movement of the striking portion 10, and avoids the guide portion 12 from colliding and interfering with the filter screen 7 during movement.

[0042] Specifically, refer to Figure 2 , Figure 3 and Figure 5The protective components include: a mounting groove 16, an elastic element 2 15, and a baffle 8. The mounting groove 16 is constructed inside the main body 1, the elastic element 2 15 is connected inside the mounting groove 16, and the baffle 8 is installed on the movable end of the elastic element 2 15. Furthermore, one end of the connector 13 is connected to a protruding thrust portion 14. When the vacuum cleaner tube 2 is connected and tightened, the connector 13 at one end can push the baffle 8 open through the thrust portion 14. At this time, the baffle 8 will stretch the elastic element 2 15 and open the opening to maintain normal airflow, reduce the load on the vacuum cleaner during operation, and improve the vacuuming effect.

[0043] Furthermore, the baffle 8 is fitted to the main body 1, and the cross-sectional area of ​​the baffle 8 is larger than that of the connector 13. With this design, when the operation stops, the connector 13 can be loosened by a certain distance, so that the baffle 8 can fit with the opening under the action of the elastic element 15, thus preventing dust from flowing back.

[0044] Furthermore, the vibration component is located above the dust collection section 3. With this design, it can directly act on the surface of the filter screen 7, and the dust adhering to the filter screen 7 is dislodged into the dust collection section 3 by the vibration.

[0045] Working principle: When using this utility model, firstly, when connecting and tightening the vacuum hose 2, the connector 13 at one end can push the baffle 8 open through the thrust part 14. At this time, the baffle 8 will stretch the elastic element 15 and open the opening to maintain normal airflow, reduce the load on the vacuum cleaner during operation, and improve the vacuuming effect. Subsequently, when the vacuum cleaner is operating, due to the generation of a negative pressure airflow with a certain intensity, the airflow will also drive the guide part 12 to rotate. At this time, the striking part 10 connected to the rotating rod of the guide part 12 can move together, so that the striking part 10 can adaptively strike the filter 7 in a cycle during vacuum cleaner operation, so as to create a certain knocking effect on the filter 7, reduce the accumulation and adhesion of dust on its surface, avoid the decrease of suction power, and reduce the cleaning intensity of personnel. Then, when stopping operation, the connector 13 is loosened by a certain distance so that the baffle 8 can fit with the opening under the action of the elastic element 15 to prevent dust backflow.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A handheld vacuum cleaner with dust backflow prevention feature, characterized in that, include: Main body (1), with an integrated dust collection space inside; The suction pipe (2) is threadedly connected to the front end of the main body (1) via a connector (13); The dust collection unit (3) is detachably connected to the lower part of the main body (1); A filter screen (7) is vertically installed inside the main body (1); The main body (1) has a drive assembly installed inside the filter (7), a knocking assembly connected inside the main body (1), and a protective assembly connected inside the main body (1) at one end of the suction pipe (2).

2. A handheld vacuum cleaner with dust backflow prevention according to claim 1, characterized in that, The drive assembly includes: a through hole (4), a negative pressure fan (5), and negative pressure blades (6); All the through holes (4) are opened on the back of the main body (1), the negative pressure fan (5) is installed inside the main body (1), and the negative pressure blades (6) are installed at the output end of the negative pressure fan (5).

3. A handheld vacuum cleaner with dust backflow prevention according to claim 1, characterized in that, The vibration assembly includes: a rotating rod (9), an elastic element (11), a striking part (10), and a guiding part (12). The rotating rod (9) is horizontally connected inside the main body (1), and the striking part (10) is connected to the surface of the rotating rod (9) through an elastic element (11). The guide part (12) is installed on the surface of the rotating rod (9).

4. A handheld vacuum cleaner with dust backflow prevention according to claim 3, characterized in that, The striking part (10) comes into contact with the filter screen (7).

5. A handheld vacuum cleaner with dust backflow prevention according to claim 3, characterized in that, The width of the guide portion (12) is less than the length of the elastic element (11).

6. A handheld vacuum cleaner with dust backflow prevention according to claim 1, characterized in that, The protective assembly includes: a mounting groove (16), an elastic element two (15), and a baffle (8); The mounting groove (16) is constructed inside the main body (1), the second elastic element (15) is connected inside the mounting groove (16), and the baffle (8) is installed on the movable end of the second elastic element (15).

7. A handheld vacuum cleaner with dust backflow prevention according to claim 6, characterized in that, The baffle (8) is fitted to the main body (1).

8. A handheld vacuum cleaner with dust backflow prevention according to claim 6, characterized in that, The cross-sectional area of ​​the baffle (8) is greater than that of the joint (13).

9. A handheld vacuum cleaner with dust backflow prevention according to claim 1, characterized in that, One end of the connector (13) is connected to a protruding thrust portion (14).

10. A handheld vacuum cleaner with dust backflow prevention according to claim 1, characterized in that, The vibration assembly is located above the dust collection section (3).

Images