A hand-held blower-suction machine

Abstract

This utility model discloses a handheld blower / vacuum cleaner, including a housing, a motor, a fan, and a power supply. The motor and fan are installed inside the housing, which also contains an inner cylinder located at the front end of the motor. At least one air-concentrating rib is provided on the inner wall of the inner cylinder, and these ribs are distributed obliquely along the same circumference of the inner wall. In blower mode, this handheld blower / vacuum cleaner can generate a larger air volume and stronger airflow, resulting in better dust removal.

Description

Technical Field

[0001] This utility model relates to the field of blow-suction machine technology, and in particular to a handheld blow-suction machine. Background Technology

[0002] A vacuum cleaner is a tool that combines vacuuming and blowing functions, and can be used for cleaning and dust removal in various scenarios, especially for cleaning confined spaces such as car interiors. Handheld vacuum cleaners are widely used due to their small size and portability. However, existing handheld vacuum cleaners suffer from low power and weak airflow in pursuit of lightweight design, often resulting in incomplete cleaning and a poor user experience. Summary of the Invention

[0003] To address the problems of existing technologies, this utility model aims to propose a handheld blower / vacuum cleaner with a larger air volume and stronger airflow, thereby effectively improving the cleaning effect.

[0004] To achieve the above objectives, the handheld blow-vacuum machine proposed in this utility model includes a housing, a motor, a fan, and a power supply. The motor and fan are installed inside the housing, and an inner cylinder is also provided inside the housing. The inner cylinder is located at the front end of the motor, and at least one air-gathering rib is provided on the inner wall of the inner cylinder. The air-gathering rib is distributed obliquely on the same circumference of the inner wall of the inner cylinder along the same circumferential direction.

[0005] In one embodiment, the tilt angle of the air-gathering rib is 1° to 80°.

[0006] In one embodiment, the inner cylinder includes a small-diameter section and a large-diameter section, and the air-gathering ribs are disposed on the inner wall of the small-diameter section.

[0007] In one embodiment, the motor and fan are disposed inside the motor cylinder, which is connected to the inner cylinder, and the internal spaces of the motor cylinder and the inner cylinder are in communication.

[0008] In one embodiment, at least one sealing ring is provided on the outer wall of the motor barrel, and the sealing ring is in contact with the housing.

[0009] In one embodiment, a front filter screen is provided at the front end of the inner cylinder, and a rear filter screen is provided at the rear of the fan.

[0010] In one embodiment, the lower part of the housing forms a handle portion for the user to grip.

[0011] In one embodiment, the blow-suction machine further includes at least one accessory, which may be selectively connected to the front end of the housing.

[0012] Beneficial effects:

[0013] This handheld blower utilizes air-gathering ribs on the inner wall of its inner cylinder, which are inclined along the same circumference. This concentrates the airflow during blowing, causing it to flow in a spiral pattern, resulting in a larger volume of air, stronger airflow, and better dust removal. Furthermore, the handheld blower employs a sealed design between the motor cylinder and the housing, along with an inner cylinder structure with varying diameters, further enhancing the airflow concentration and increasing the volume of air blown out. Attached Figure Description

[0014] The present invention will be further described and explained below with reference to the accompanying drawings.

[0015] Figure 1 This is a three-dimensional schematic diagram of the handheld blow-suction machine according to the preferred embodiment of this utility model.

[0016] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the main body of a handheld blow-vacuum machine.

[0017] Figure 3 yes Figure 2 A cross-sectional view of the main body of the blow-suction machine.

[0018] Figure 4 yes Figure 2 A partial exploded view of the main body of the blow-suction machine, showing that half of the casing has been removed.

[0019] Figure 5 yes Figure 2 A three-dimensional schematic diagram of the inner cylinder of the main body of the blow-suction machine.

[0020] Figure label:

[0021] 1. Main body of the blower / vacuum machine; 2. Accessories; 3. Front cover; 4. Rear cover; 10. Housing; 11. Motor; 12. Fan; 13. Power supply; 14. Handle; 15. Motor barrel; 16. Inner barrel; 17. Air concentrator; 18. Front filter; 19. Rear filter; 21. Accessory 1; 22. Accessory 2; 23. Accessory 3; 24. Accessory 4; 141. Power switch; 142. Mode switch; 150. Sealing ring; 161. Small diameter section; 162. Large diameter section; 171. Top surface; 172. Bottom surface; 173. Side surface. Detailed Implementation

[0022] The technical solution of this utility model will be more clearly and completely explained below with reference to the accompanying drawings and through the description of the preferred embodiments of this utility model.

[0023] like Figure 1The preferred embodiment shown includes a handheld blow-vacuum machine body 1 and multiple accessories 2, which can be selectively connected to the blow-vacuum machine body 1 to achieve different functions and be suitable for different application scenarios.

[0024] like Figures 2 to 4 As shown, the blow-vacuum machine body 1 includes a housing 10, a motor 11, a fan 12, and a power supply unit 13. The motor 11 and the fan 12 are installed inside the housing 10. The fan 12 is coaxially connected to the motor 11 and is driven to rotate by the motor 11, thereby generating airflow.

[0025] The lower part of the housing 10 forms a handle portion 14 for the user to hold. The handle portion 14 is equipped with a power switch 141 and a mode switch 142, and may also be equipped with a power indicator light and other operation buttons, so that the user can easily operate the blow-vacuum machine when holding the handle portion 14. The mode switch 142 is used to control the forward and reverse rotation of the motor 10, thereby realizing the switching between blowing and suction functions.

[0026] In this embodiment, the power supply unit 13 is a battery, which is installed inside the handle part 14. In other embodiments, the power supply unit 13 may also be a connection part that connects to an external power source, such as a plug that connects to an external AC power source, or a connection interface that connects to an external DC power source. Therefore, the blow-dryer of this utility model does not limit the power supply method.

[0027] Specifically, the motor 11 and the fan 12 are disposed inside the motor cylinder 15. At least one sealing ring 150 is provided on the outer wall of the motor cylinder 15. The sealing ring 150 contacts the housing 10. Furthermore, it can contact the inner wall of the housing 10 or the ribs on the inner wall of the housing 10, so that air cannot pass between the motor cylinder 15 and the housing 10, but can only pass through the motor cylinder 15 and the inner cylinder 16 in a concentrated manner, thus playing the role of concentrating airflow.

[0028] The housing 10 also includes an inner cylinder 16, located at the front end of the motor 11 and connected to the front end of the motor cylinder 15. The inner cylinder 16 communicates with the internal space of the motor cylinder 15, forming an airflow channel. Specifically, the inner cylinder 16 is a stepped shaft shape, including a smaller diameter section 161 and a larger diameter section 162. The smaller diameter section 161 is close to the front end of the blow-suction machine body 1, and the larger diameter section 162 is connected to the front end of the motor cylinder 15. This arrangement allows air to flow from inside the motor cylinder 15 into the inner cylinder 16 in blowing mode. Because the area of ​​the airflow channel is reduced by the smaller diameter section 161, the airflow is further concentrated, thus further enhancing the effect of air gathering.

[0029] Combination Figures 2 to 5As shown, at least one air-gathering rib 17 is provided on the inner wall of the inner cylinder 16. The air-gathering ribs 17 are distributed obliquely along the same circumferential direction on the same circumference of the inner wall of the inner cylinder 16, and further, they are distributed on the inner wall of the small diameter section 161 of the inner cylinder. The inclination angle of the air-gathering rib 17 is 1° to 80°, preferably 10° to 20°, which refers to the inclination angle of the air-gathering rib 17 relative to the central axis of the inner cylinder 16. The arrangement of the air-gathering ribs 17, on the one hand, further reduces the airflow area, thus further concentrating the airflow passing through this area; on the other hand, the air-gathering ribs are inclined along the same circumferential direction, causing the airflow to change from a straight flow to a spiral flow, thereby increasing the intensity of the airflow. In the illustrated embodiment, five air-gathering ribs 17 are used. In other embodiments, other numbers of air-gathering ribs can also be used. This utility model does not limit the number of air-gathering ribs.

[0030] Based on the internal structure of the blower body 1 described above, the airflow is gathered multiple times in the blowing mode and blown out in a spiral airflow, which increases both the air volume and the wind force, thus effectively improving the dust blowing effect.

[0031] Preferably, in this embodiment, the air-gathering rib 17 includes, in addition to the side connected to the inner cylinder 16, a top surface 171, a bottom surface 172, and a side surface 173. The top surface 171 and the bottom surface 172 are located at both ends of the air-gathering rib 17, and the side surface 173 faces the center of the inner cylinder 16. The top surface 171 and the bottom surface 172 are smoothly transitioned to the side surface 173 by arcs, and the side surface 173 is preferably an arc shape, thereby making it easier for the airflow to form a spiral shape. In other embodiments, the air-gathering rib can also adopt other shapes, such as simple strips or plates, which can also achieve the function of gathering air and spiral airflow, but the effect is different from the aforementioned preferred solution. This utility model does not limit the shape of the air-gathering rib.

[0032] This handheld blow-vacuum cleaner has a front filter 18 and a rear filter 19. The front filter 18 is located at the front end of the inner cylinder 16, and the rear filter 19 is located behind the fan 12. These filters are used to block larger particles of impurities from entering the housing 10 during blowing and suction. The handheld blow-vacuum cleaner also includes a front cover 3 and a rear cover 4. The front cover 3 is installed at the front end of the housing 10, and the rear cover is installed at the rear end of the housing 10.

[0033] like Figure 1As shown, in this embodiment, the blower / vacuum cleaner is equipped with four accessories: Accessory 1 (21), Accessory 2 (22), Accessory 3 (23), and Accessory 4 (24). The user can select one of these accessories to connect to the front cover 31 according to their needs. Specifically, Accessory 1 (21) is a suction pipe assembly with a sponge installed inside to prevent dust from entering the housing 10. A brush can be installed at the front end of the suction pipe assembly, allowing the user to gently wipe and vacuum simultaneously for a more thorough cleaning. Accessory 2 (22) has a tubular diameter that gradually decreases from the rear end to the front end, with a thinner front end, suitable for cleaning narrow corners. Accessory 3 (23) is suitable for inflating balloons. Accessory 4 (24) has a larger diameter front end, suitable for blowing dust and cleaning larger areas. The blower / vacuum cleaner of this invention can also be used with other suitable accessories; therefore, the number and type of accessories are not limited.

[0034] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications, substitutions, and improvements made by those skilled in the art to the technical solutions of the present invention based on the provided description and drawings, without departing from the design concept and spirit of the present invention, should all fall within the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

Claims

1. A hand-held blower-suction machine comprising a housing, a motor, a fan, a power supply section, said motor and fan being mounted within said housing, characterized in that, The housing is further provided with an inner cylinder, which is located at the front end of the motor. At least one air-gathering rib is provided on the inner wall of the inner cylinder, and the air-gathering rib is distributed obliquely on the same circumference of the inner wall of the inner cylinder along the same circumferential direction.

2. The hand-held suction / insufflation machine of claim 1, wherein, The inclination angle of the wind-gathering rib is 1° to 80°.

3. The hand-held suction / insufflation machine of claim 2, wherein, The inner cylinder includes a small-diameter section and a large-diameter section, and the air-gathering ribs are arranged on the inner wall of the small-diameter section.

4. The hand-held suction / insufflation machine of claim 3, wherein, The motor and fan are installed inside the motor cylinder, which is connected to the inner cylinder, and the internal spaces of the motor cylinder and the inner cylinder are in communication.

5. The hand-held suction / insufflation machine of claim 4, wherein, At least one sealing ring is provided on the outer wall of the motor cylinder, and the sealing ring is in contact with the housing.

6. The hand-held suction / insufflation machine of claim 5, wherein, The inner cylinder has a front filter screen at its front end and a rear filter screen at its rear.

7. The hand-held suction / insufflation machine of claim 1, wherein, The lower part of the housing forms a handle portion for the user to grip.

8. The hand-held suction / insufflation machine of claim 1, wherein, The blow-suction machine also includes at least one accessory, which can be selectively connected to the front end of the housing.

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