A trigger-type continuously variable speed handheld vacuum cleaner

Abstract

This utility model relates to the field of household appliance technology and discloses a trigger-type stepless speed-adjustable handheld vacuum cleaner, including a protective cover. A connecting block is fixedly connected to the rear side of the protective cover, and a disassembly mechanism is fixedly connected inside the connecting block. An installation mechanism is fixedly connected to the front side of the protective cover, and a support block is fixedly connected to the rear side of the connecting block. A snap fastener is slidably connected to the bottom end of the support block. The disassembly mechanism includes a fixing block, the outer side of which is fixedly connected to the inside of the connecting block. A motor is fixedly connected to the front side of the fixing block, and a pinion is fixedly connected to the drive end of the motor. In this utility model, starting the motor drives the large gear to rotate through the pinion, causing the sliding column to push the sliding rod to move, thereby controlling the clamping block to tighten or expand, realizing the quick fixing and disassembly of the filter, facilitating thorough cleaning of filter impurities, and maintaining the machine in good working condition.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a trigger-type stepless speed adjustable handheld vacuum cleaner. Background Technology

[0002] Trigger-type continuously variable handheld vacuum cleaners are a new type of cleaning tool. They feature a trigger design, allowing users to start the vacuum cleaner by pressing the trigger and adjust the suction power by controlling the degree to which the trigger is pressed, thus achieving stepless speed regulation. These vacuum cleaners typically have advantages such as being lightweight and portable, easy to operate, and having strong suction power, making them suitable for cleaning in homes, offices, and other places.

[0003] The working principle of a trigger-type stepless speed-regulating handheld vacuum cleaner is that the trigger is connected to the speed regulation circuit. When the trigger is pressed, the circuit is turned on and the motor starts. Different degrees of trigger pressing will change parameters such as resistance or voltage in the circuit, thereby changing the input power of the motor and changing the motor speed. Ultimately, the suction power of the vacuum cleaner can be steplessly adjusted to adapt to different cleaning scenarios and different levels of dirt.

[0004] In existing technologies, the installation of internal filters in some handheld vacuum cleaners is relatively complicated, making them inconvenient to disassemble, difficult to clean or replace regularly, and prone to clogging by dust and debris, reducing vacuuming efficiency and significantly compromising cleaning quality. Furthermore, filter clogging increases the motor load and shortens the overall lifespan of the vacuum cleaner. To address these issues, a trigger-type stepless speed-regulating handheld vacuum cleaner is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a trigger-type stepless speed-regulating handheld vacuum cleaner, which aims to improve the problems in the prior art where it is inconvenient to disassemble the filter, difficult to clean or replace the filter regularly, dust and debris easily clog the filter, reduce vacuuming efficiency, greatly reduce cleaning quality, and filter clogging will increase the motor load and shorten the overall service life of the vacuum cleaner.

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

[0007] A trigger-type continuously variable speed handheld vacuum cleaner includes a protective cover, a connecting block fixedly connected to the rear side of the protective cover, a disassembly mechanism fixedly connected inside the connecting block, an installation mechanism fixedly connected to the front side of the protective cover, a support block fixedly connected to the rear side of the connecting block, and a snap fastener slidably connected to the bottom end of the support block.

[0008] The disassembly mechanism includes a fixing block, the outer side of which is fixedly connected to the inside of the connecting block. A motor is fixedly connected to the front side of the fixing block, a small gear is fixedly connected to the drive end of the motor, a rotating shaft is fixedly connected to the rear side of the fixing block, a large gear is rotatably connected to the outer side of the rotating shaft, the outer side of the small gear and the outer side of the large gear are meshed, multiple grooves are provided inside the large gear, and a transmission component is fixedly connected to the rear side of the fixing block.

[0009] As a further description of the above technical solution:

[0010] The transmission assembly includes multiple sliding columns, which are slidably connected inside the large gear. Each sliding column has a sliding rod fixedly connected to its front side, a clamping block fixedly connected to its rear side, a disc cover fixedly connected to its rear side, and a filter installed on the inner side of the clamping block.

[0011] As a further description of the above technical solution:

[0012] The installation mechanism includes a connecting pipe, the outer side of which is fixedly connected to the front side of the protective cover. Multiple sliding blocks are slidably connected inside the connecting pipe. A rotating ring is fixedly connected to the outer side of the multiple sliding blocks. A drive assembly is slidably connected inside the rotating ring.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes multiple movable columns, the outer sides of which are slidably connected to the inside of the rotating ring. Each movable column is fixedly connected to a pressure block at its rear. An elastic ring is installed on the outer side of the pressure block. Two levers are fixedly connected to the outer side of the rotating ring. A fixed ring is slidably connected to the front side of the sliding block.

[0015] As a further description of the above technical solution:

[0016] The front side of the small gear is rotatably connected to the rear side of the fixed block, and the front side of the large gear is rotatably connected to the rear side of the fixed block.

[0017] As a further description of the above technical solution:

[0018] The outer sides of the plurality of sliding columns are slidably connected to the interior of the plurality of grooves, and the outer side of the sliding rod is slidably connected to the interior of the fixing block;

[0019] As a further description of the above technical solution:

[0020] The rear side of the rotating ring is slidably connected to the front side of the connecting tube, and the front side of the rotating ring is slidably connected to the rear side of the fixed ring.

[0021] As a further description of the above technical solution:

[0022] The rotating ring has multiple arc-shaped grooves inside, and the outer sides of the multiple movable columns are slidably connected to the interior of the multiple arc-shaped grooves.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, after the motor is started, the small gear at the motor drive end begins to rotate, which drives the large gear meshing with it to rotate. The sliding column inside the large gear moves accordingly, pushing the sliding rod to slide in the fixed block, causing the clamping block to tighten inward or expand outward, thereby realizing the quick fixing or disassembly of the filter. This allows the user to easily remove the filter, making it easy to thoroughly clean the dust, hair and other impurities attached to it, effectively maintaining the working efficiency of the motor and extending its service life.

[0025] 2. In this utility model, when the user rotates the lever, it drives the rotating ring to move, causing the elastic ring to push the moving column to rotate along the arc groove, and the pressure block slides accordingly. After releasing the hand, the elastic ring automatically tightens the pressure block, thereby securing the installation of different vacuum heads, avoiding damage caused by improper installation, extending the life of the vacuum head and the main unit, and supporting quick replacement of vacuum heads to adapt to different cleaning scenarios, improving cleaning efficiency and reducing usage costs. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a trigger-type continuously variable speed handheld vacuum cleaner proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a filter for a trigger-type continuously variable handheld vacuum cleaner proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the small gear structure of a trigger-type continuously variable speed handheld vacuum cleaner proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the connecting tube of a trigger-type continuously variable speed handheld vacuum cleaner proposed in this utility model;

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Protective cover; 2. Connecting block; 3. Disassembly mechanism; 31. Fixing block; 32. Motor; 33. Pinion; 34. Rotating shaft; 35. Large gear; 36. Groove; 370. Transmission assembly; 371. Sliding column; 372. Sliding rod; 373. Clamping block; 374. Disc cover; 375. Filter; 4. Installation mechanism; 41. Connecting pipe; 42. Sliding block; 43. Rotating ring; 440. Drive assembly; 441. Moving column; 442. Pressure block; 443. Elastic ring; 444. Pulling block; 445. Fixing ring; 446. Arc groove; 5. Support block; 6. Buckle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figures 1 to 3 This utility model provides an embodiment of a trigger-type stepless speed adjustable handheld vacuum cleaner, including a protective cover 1. The protective cover (1) serves as the outer shell of the handheld vacuum cleaner. A connecting block 2 is fixedly connected to the rear side of the protective cover 1. The connecting block 2 not only provides a layout basis for the disassembly mechanism 3, but also plays a connecting transition role. It is connected to the support block 5. The disassembly mechanism 3 is fixedly connected inside the connecting block 2. An installation mechanism 4 is fixedly connected to the front side of the protective cover 1. The installation mechanism 4 is fixed to the front side of the protective cover 1 and is used to install cleaning components such as nozzles, ensuring seamless connection between the nozzle and the internal air duct of the vacuum cleaner, ensuring stable airflow during vacuuming, and improving vacuuming efficiency. At the same time, the installation mechanism 4 has a certain compatibility and can be adapted to different types of nozzles to meet the diverse cleaning needs of floors, furniture surfaces, crevices, etc. A support block 5 is fixedly connected to the rear side of the connecting block 2. The support block 5 mainly supports the position of the vacuum cleaner. A buckle 6 is slidably connected to the bottom end of the support block 5. At the same time, the buckle 6 contacts the trigger of the handheld vacuum cleaner. Pressing the buckle 6 can enable the handheld vacuum cleaner to work continuously for a long time.

[0035] The disassembly mechanism 3 includes a fixing block 31, the outer side of which is fixedly connected to the inside of the connecting block 2. The fixing block 31 provides a stable mounting platform for the entire disassembly mechanism 3, ensuring that components such as the motor 32 and the rotating shaft 34 remain in a fixed position during operation. The motor 32 is fixedly connected to the front side of the fixing block 31, and a pinion 33 is fixedly connected to the drive end of the motor 32. When the motor 32 is powered on, it rotates at high speed, driving the pinion 33 connected to its drive end to rotate. The pinion 33 and the large gear 35 mesh and transmit power, converting the high speed of the motor 32 into the low speed and high torque rotation of the large gear 35, providing the power basis for subsequent transmission.

[0036] A rotating shaft 34 is fixedly connected to the rear side of the fixed block 31. The rotating shaft 34 is fixed to the rear side of the fixed block 31, providing a pivot for the large gear 35 to ensure the stability of the large gear 35 during rotation. The large gear 35 is rotatably connected to the outer side of the rotating shaft 34. The outer side of the small gear 33 is meshed with the outer side of the large gear 35. The large gear 35 has multiple grooves 36 inside, which cooperate with the sliding column 371 in the transmission assembly 370 to achieve mechanical transmission. When the large gear 35 rotates, the inner wall of the groove 36 pushes the sliding column 371 to slide inside, converting the circular motion of the large gear 35 into the linear motion of the sliding column 371. The transmission assembly 370 is fixedly connected to the rear side of the fixed block 31.

[0037] The transmission assembly 370 includes multiple sliding columns 371, which are slidably connected inside the large gear 35. Each sliding column 371 has a sliding rod 372 fixedly connected to its front side. The sliding rod 372 transmits the linear motion of the sliding column 371 to the clamping block 373 at its rear. The clamping block 373 is fixedly connected to the rear side of the sliding rod 372. A disc cover 374 is fixedly connected to the rear side of the fixing block 31. The disc cover 374, along with components such as a pinion gear 33, provides protection and ensures stable operation of subsequent components. A filter 375 is installed inside the clamping block 373. The filter 375 is clamped and released through opening and closing actions. When the filter 375 needs to be removed for cleaning or replacement, the motor 32 starts, driving the pinion gear 33 and the large gear 35 to rotate, causing the clamping block 373 to release. During installation, the motor 32 is operated in reverse, and the clamping block 373 clamps the filter 375, ensuring a stable installation during vacuum cleaner operation.

[0038] Reference Figure 4 , Figure 5The mounting mechanism 4 includes a connecting pipe 41, the outer side of which is fixedly connected to the front of the protective cover 1. The connecting pipe 41 connects the internal air duct of the vacuum cleaner to the external cleaning component, ensuring that airflow can smoothly enter the vacuum cleaner from the cleaning component during vacuuming. Simultaneously, the outer side of the connecting pipe 41 is fixedly connected to the protective cover 1, providing stable support for the entire mounting mechanism 4 and ensuring its stability during the connection of the cleaning component and vacuum cleaner operation. Multiple sliding blocks 42 are slidably connected inside the connecting pipe 41, acting as a transmission medium between the connecting pipe 41 and the rotating ring 43. When the rotating ring 43 rotates or shifts, it drives the sliding blocks 42 to slide within the connecting pipe 41. The outer side of the multiple sliding blocks 42 is fixedly connected to the rotating ring 43, whose internal space is used to install the drive assembly 440, providing a movement track for components such as the moving column 441 of the drive assembly 440.

[0039] A drive assembly 440 is slidably connected inside the rotating ring 43. The drive assembly 440 includes multiple movable columns 441, the outer sides of which are slidably connected inside the rotating ring 43. Each movable column 441 has a pressure block 442 fixedly connected to its rear side. The movable columns 441 slide inside the rotating ring 43 and are key components for force transmission within the drive assembly 440. When the rotating ring 43 rotates or the user applies force to the drive assembly 440 in other ways, the movable columns 441 slide on tracks inside the rotating ring 43. The sliding of the movable columns 441 drives the pressure block 442 fixedly connected to their rear sides to move synchronously. Through this transmission method, the motion of the rotating ring 43 is converted into the linear motion of the pressure block 442, thereby enabling the pressing or releasing operation of different vacuum cleaner heads.

[0040] An elastic ring 443 is installed on the outer side of the pressure block 442. The elastic ring 443 is installed on the outer side of the pressure block 442 and plays a role in buffering and enhancing the fixing effect. When the pressure block 442 presses the cleaning part, the elastic ring 443 will undergo elastic deformation, closely adhering to the surface of the vacuum head, increasing friction, and making the cleaning part more securely fixed. Two levers 444 are fixedly connected to the outer side of the rotating ring 43. These are the direct components for the user to operate the installation mechanism 4. A fixing ring 445 is slidably connected to the front side of the sliding block 42. The fixing ring 445 provides a track for the sliding block 42, ensuring that the sliding block 42 moves in the correct direction within the connecting tube 41 and preventing the sliding block 42 from shifting or shaking.

[0041] Reference Figure 2 , Figure 3 , Figure 5The front side of the pinion 33 is rotatably connected to the rear side of the fixed block 31, and the front side of the large gear 35 is rotatably connected to the rear side of the fixed block 31. Both the pinion 33 and the large gear 35 are rotatably connected to the rear side of the fixed block 31 via their front sides, forming a stable gear transmission assembly. When the motor 32 drives the pinion 33 to rotate, due to the meshing of the outer sides of the two gears, the circular motion of the pinion 33 is transmitted to the large gear 35 through the inter-tooth force, causing the large gear 35 to rotate in the opposite direction around the axis 34. The outer sides of multiple sliding columns 371 are slidably connected to the interior of multiple grooves 36. When the large gear 35 rotates, the inner wall of the groove 36 generates a radial thrust on the sliding column 371, forcing the sliding column 371 to slide along a curved trajectory within the groove 36. This sliding converts the circular motion of the large gear 35 into the radial linear motion of the sliding column 371, realizing the conversion of motion form. The outer side of the sliding rod 372 is slidably connected to the interior of the fixed block 31.

[0042] The rear side of the rotating ring 43 is slidably connected to the front side of the connecting pipe 41, and the front side of the rotating ring 43 is slidably connected to the rear side of the fixed ring 445. Multiple arc-shaped grooves 446 are formed inside the rotating ring 43, and the outer sides of multiple moving columns 441 are slidably connected to the interior of the multiple arc-shaped grooves 446, forming a sliding fit with the outer sides of the moving columns 441. When the rotating ring 43 rotates, the inner wall of the arc-shaped grooves 446 generates a tangential thrust on the moving columns 441, forcing the moving columns 441 to slide along a curved trajectory within the arc-shaped grooves 446. This sliding converts the circular motion of the rotating ring 43 into the axial linear motion of the moving columns 441, realizing the transmission of force and the conversion of motion form.

[0043] Working principle: When the user starts the motor 32, the motor 32 begins to move and drives the small gear 33 fixedly connected to its drive end to rotate. The movement of the small gear 33 causes the large gear 35 meshing with it to rotate. The movement of the large gear 35 causes the sliding column 371 to slide inside the large gear 35. After the sliding column 371 slides, it drives the sliding rod 372 to slide inside the fixed block 31, and drives the clamping block 373 to tighten inward or expand outward, thereby fixing and removing the filter 375. This allows the user to easily remove the filter 375, so that the dust, hair and other impurities attached to the filter 375 can be removed more thoroughly and deeply during cleaning, keeping the motor 32 in good working condition and extending its service life.

[0044] The user rotates the lever 444, which causes the rotating ring 43 to move between the fixed ring 445 and the connecting tube 41. The movement of the elastic ring 443 causes the moving column 441 to rotate in the arc groove 446 within the rotating ring 43, and causes the pressure block 442 to slide within the connecting tube 41. After connecting the vacuum head to the vacuum cleaner, the user releases their hand, and the elastic ring 443 tightens the pressure block 442, allowing the pressure block 442 to be installed with different vacuum heads. This avoids damage caused by improper installation, extends the service life of the vacuum head and the vacuum cleaner, reduces the cost of frequently replacing damaged parts, lowers the cost of use, and allows users to easily and quickly change vacuum heads in different cleaning scenarios, saving time and effort and making cleaning more efficient and convenient.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A trigger type infinitely variable speed hand vacuum cleaner comprising a protective cover (1), characterized in that: A connecting block (2) is fixedly connected to the rear side of the protective cover (1), a disassembly mechanism (3) is fixedly connected inside the connecting block (2), an installation mechanism (4) is fixedly connected to the front side of the protective cover (1), a support block (5) is fixedly connected to the rear side of the connecting block (2), and a buckle (6) is slidably connected to the bottom end of the support block (5). The disassembly mechanism (3) includes a fixing block (31), the outer side of which is fixedly connected to the inside of the connecting block (2). A motor (32) is fixedly connected to the front side of the fixing block (31), a small gear (33) is fixedly connected to the drive end of the motor (32), a rotating shaft (34) is fixedly connected to the rear side of the fixing block (31), a large gear (35) is rotatably connected to the outer side of the rotating shaft (34), the outer side of the small gear (33) and the outer side of the large gear (35) are meshed, a plurality of grooves (36) are provided inside the large gear (35), and a transmission assembly (370) is fixedly connected to the rear side of the fixing block (31).

2. The trigger-type continuously variable speed handheld vacuum cleaner according to claim 1, characterized in that: The transmission assembly (370) includes a plurality of sliding columns (371), which are slidably connected inside the large gear (35). A sliding rod (372) is fixedly connected to the front side of each sliding column (371), and a clamping block (373) is fixedly connected to the rear side of the sliding rod (372). A disc cover (374) is fixedly connected to the rear side of the fixing block (31), and a filter (375) is installed on the inner side of the clamping block (373).

3. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 2, characterized in that: The installation mechanism (4) includes a connecting pipe (41), the outer side of which is fixedly connected to the front side of the protective cover (1), and a plurality of sliding blocks (42) are slidably connected inside the connecting pipe (41). A rotating ring (43) is fixedly connected to the outer side of the plurality of sliding blocks (42), and a drive assembly (440) is slidably connected inside the rotating ring (43).

4. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 3, characterized in that: The drive assembly (440) includes a plurality of movable columns (441), the outer sides of which are slidably connected to the inside of the rotating ring (43). Each of the movable columns (441) is fixedly connected to a pressure block (442) at its rear side. An elastic ring (443) is installed on the outer side of the pressure block (442). Two toggle blocks (444) are fixedly connected to the outer side of the rotating ring (43). A fixed ring (445) is slidably connected to the front side of the sliding block (42).

5. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 1, characterized in that: The front side of the small gear (33) is rotatably connected to the rear side of the fixed block (31), and the front side of the large gear (35) is rotatably connected to the rear side of the fixed block (31).

6. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 2, characterized in that: The outer sides of the plurality of sliding columns (371) are slidably connected to the interior of the plurality of grooves (36), and the outer side of the sliding rod (372) is slidably connected to the interior of the fixing block (31).

7. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 4, characterized in that: The rear side of the rotating ring (43) is slidably connected to the front side of the connecting pipe (41), and the front side of the rotating ring (43) is slidably connected to the rear side of the fixed ring (445).

8. A trigger-type continuously variable speed handheld vacuum cleaner according to claim 4, characterized in that: The rotating ring (43) has multiple arc-shaped grooves (446) inside, and the outer sides of the multiple moving columns (441) are slidably connected to the interior of the multiple arc-shaped grooves (446).

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