Airflow generating device

Abstract

The utility model relates to an airflow generating device which can provide dust blowing and vacuumizing functions for a user. The airflow generating device is provided with: a motor for accommodating the motor, and a main housing having a first longitudinal axis; the fan is driven by the motor to rotate and is used for generating airflow in the main shell; the front cover is positioned at one end of the main shell along a first longitudinal axis and is provided with an air outlet for discharging airflow out of the main shell; the accessory is detachably mounted on the front cover; the front cover comprises a mounting part, the mounting part comprises at least one adapting piece protruding out of the surface of the front cover, the accessory is provided with an elastically-deformable cantilever, the cantilever is provided with a free end, and the free end is provided with a matching part used for being connected with the adapting piece in a clamped mode. According to the airflow generating device provided by the utility model, accessories can be quickly assembled and disassembled, and the operation is simple.

Description

Technical Field

[0001] The present application belongs to the technical field of electric tools, and in particular, relates to an airflow generating device. Background Art

[0002] Existing airflow generating devices, when used as hair dryers, can use their air outlet to help users clean up the material debris generated by decoration, and can also be used for cleaning work such as cleaning fallen leaves; or use their air inlet to provide users with a vacuum function to release the air in inflatable devices such as vacuum compression bags and inflatable beds. Known dust blowers for cleaning decoration debris use a motor to drive the fan to rotate to generate airflow. In order to change the wind force and wind speed, the blowing process mainly involves replacing accessories of different specifications to meet different working conditions used by users. Because there will be scenes of switching accessories in different working conditions, the removal of accessories needs to be convenient for users to operate.

[0003] The existing dust blow gun has an installation groove on the peripheral wall near the nozzle, which is an L-shaped groove with a portion extending in the axial direction and a portion extending in the circumferential direction; a protrusion is provided on the peripheral wall of the accessory; when the operator installs the accessory to the dust blow gun, it is necessary to first push the accessory along the axial direction to embed it into the installation groove, and then relatively rotate the accessory in the circumferential direction; when the operator removes it, it is necessary to first relatively rotate it in the circumferential direction, and then move it away from the dust blow gun before taking it out. When the accessory is disassembled, it needs to be pushed, pulled, and rotated, which has many steps and is complicated to operate. Utility Model Content

[0004] The utility model aims to provide an airflow generating device with quick attachment and easy operation.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] An airflow generating device comprises: a motor; a main shell for accommodating the motor and having a first longitudinal axis; a fan driven to rotate by the motor and used to generate airflow in the main shell; a front cover located at one end of the main shell along the first longitudinal axis and provided with an air outlet for discharging the airflow out of the main shell; an accessory mounted on the front cover in a detachable manner; the front cover comprises a mounting portion, the mounting portion comprises at least one fitting protruding from the surface of the front cover, the fitting is provided with an elastically deformable cantilever, the cantilever has a free end, and the free end is provided with a mating portion for snapping with the fitting.

[0007] Preferably, the fitting is configured to be cylindrical, square, or irregular in shape, and the matching portion is configured to be a locking hole matching the shape of the fitting.

[0008] Preferably, the accessory extends along the second longitudinal axis, the mounting end and the blowing end are respectively located at both ends of the accessory along the second longitudinal axis, the cantilever is arranged at the mounting end, the mounting end is provided with a mounting port, and the blowing end is provided with a blowing port.

[0009] Preferably, the cross section of the blowing port is smaller than the cross section of the mounting port.

[0010] Preferably, the free end of the cantilever faces the mounting opening, and the inner wall of the accessory is provided with a limiting groove, which extends from the mounting opening along the second longitudinal axis to the free end of the cantilever, and when the accessory is mated with the front cover mounting portion, the limiting groove is used to guide the matching part to move toward the mating portion.

[0011] Preferably, the inner wall of the free end of the cantilever is provided with a first guiding slope, and the first guiding slope is used to guide the fitting to move to engage with the matching portion.

[0012] Preferably, the end face of the air outlet of the front cover is a plane, and an inwardly convex table is provided between the mounting end and the blowing end, and when the fitting is engaged with the mating portion, the table is used to fit tightly with the plane.

[0013] Preferably, a second guiding bevel is provided on the side of the fitting facing away from the air outlet, and when the accessory is separated from the front cover mounting portion, the second guiding bevel is used to guide the mating portion to disengage from the fitting under the action of an external axial force.

[0014] Preferably, the airflow generating device comprises a battery pack to provide power to the motor.

[0015] According to another aspect of the utility model, an airflow generating device is provided, comprising: a motor; a main shell for accommodating the motor and having a first longitudinal axis; a fan driven to rotate by the motor and used to generate airflow in the main shell; a front cover located at one end of the main shell along the first longitudinal axis and provided with an air outlet for discharging the airflow out of the main shell; the front cover comprises a mounting portion for mounting accessories; the mounting portion comprises at least one fitting protruding from the surface of the front cover, the fitting being used to snap into engagement with a mating portion of the accessory.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: a protruding fitting is designed on the front cover of the airflow generating device, an elastically deformable cantilever is provided on the accessory, a matching part is provided on the cantilever, and the fitting part of the accessory can be quickly connected with the matching part of the front cover, so that the accessory can be directly plugged in and out, and the disassembly and installation can be completed in one action. The accessory can be quickly installed and removed, and the operation is simple, which is convenient for users to replace. At the same time, the end face of the air outlet of the front cover is a plane, and the table in the accessory is used to fit closely with the plane of the air outlet of the front cover to improve the sealing performance, ensure that after the accessory is installed, the airflow is concentrated from the air outlet of the front cover to the air outlet of the accessory, and the airflow loss during the process is avoided, which helps to ensure the air outlet efficiency while realizing the rapid installation and removal of the accessory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an airflow generating device shown in one embodiment of the utility model.

[0018] Figure 2 for Figure 1 An exploded view of the airflow generating device shown.

[0019] Figure 3 for Figure 1 A partial cross-sectional structural schematic diagram of the airflow generating device shown.

[0020] Figure 4 For installation Figure 1 A schematic structural diagram of an accessory of the airflow generating device shown.

[0021] Figure 5 For installation Figure 1 A schematic structural diagram of an accessory of the airflow generating device shown.

[0022] Figure 6 For installation Figure 1 A schematic structural diagram of a front cover of an airflow generating device is shown.

[0023] Figure 7 For installation Figure 1 A schematic structural diagram of a front cover of an airflow generating device is shown.

[0024] In the figure: 1—dust blowing gun (airflow generating device), 2—main shell, 3—motor, 4—fan, 5—front cover, 51—mounting part, 511—matching part, 52—air outlet, 6—accessory, 61—cantilever, 611—free end, 6111—matching part, 62—blowing end, 63—mounting end, 621—blowing port, 631—mounting port, 64—limiting groove, 6112—first guide slope, 5111—second guide slope, 521—air outlet plane, 65—table top, 7—battery pack, 8—grip part, A—first longitudinal axis; B—second longitudinal axis. DETAILED DESCRIPTION

[0025] The present application will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional changes made by a person of ordinary skill in the art based on these embodiments are all included in the protection scope of the present application.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] Example 1

[0028] Reference Figure 1 to Figure 7 , an airflow generating device 1 provided in one embodiment of the present application comprises: a main housing 2 for accommodating a motor 3 and having a first longitudinal axis A; a fan 4 driven to rotate by the motor 3 and used to generate airflow in the main housing 2; a front cover 5 located at one end of the main housing along the first longitudinal axis A and provided with an air outlet 52 for discharging the airflow out of the main housing 2; an accessory 6 mounted on the front cover 5 in a detachable manner; the front cover 5 comprises a mounting portion 51, the mounting portion 51 comprises at least one fitting 511 protruding from the surface of the front cover, and an elastically deformable cantilever 61 is provided on the accessory 6, the cantilever 61 has a free end 611, and the free end 611 is provided with a mating portion 6111 for engaging with the fitting 511. By designing the fitting 511 on the front cover of the airflow generating device 1 and providing the elastically deformable cantilever 61 on the accessory 6, the accessory 6 can be directly plugged in and out, and disassembly and assembly can be completed in one action, which is simple to operate, convenient for users to replace, and improves the speed of accessory assembly and disassembly.

[0029] from Figure 1 to Figure 7It can be seen that two fittings 511 are provided on the mounting portion 51 of the front cover 5, and two corresponding cantilevers 61, two corresponding free ends 611 and two matching portions 6111 are provided on the accessory 6. When the accessory 6 is mounted on the front cover mounting portion 51, the two fittings 511 and the two matching portions 6111 are respectively engaged. In other embodiments, one or more fittings 511 may be provided, and the matching portions 6111 are provided to be the same number as the fittings 511. Furthermore, the fittings 511 may be provided to be cylindrical, square, or irregular in shape, and the matching portions 6111 are provided to be lock holes that match the shape of the fittings 511.

[0030] like Figure 4 and 5 As shown, in the airflow generating device 1 of the present application, the attachment 6 extends along the second longitudinal axis B, the mounting end 63 and the blowing end 62 are respectively located at the two ends of the attachment 6 along the second longitudinal axis B, the cantilever 61 is arranged at the mounting end 63, the mounting end 63 is provided with a mounting port 631, and the blowing end 62 is provided with a blowing port 621. The cross section of the blowing port 621 is smaller than the cross section of the mounting port 631. Among them, the airflow generating device 1 of the present application can be equipped with multiple attachments 6 with different diameters of the blowing ports 621, and the user can meet different working conditions used by the user by replacing attachments of different specifications to provide different wind forces and wind speeds.

[0031] Furthermore, the cantilever free end 611 faces the mounting opening 631, and the inner wall of the accessory 6 is provided with a limiting groove 64, which extends from the mounting opening 631 along the second longitudinal axis B to the cantilever free end 611. When the accessory 6 is mated with the front cover mounting portion 51, the limiting groove 64 is used to guide the fitting 511 to move toward the matching portion 6111. The inner wall of the cantilever free end 611 is provided with a first guiding inclined surface 6112, which is used to guide the fitting 511 to move to engage with the matching portion 6111. When the accessory 6 is mounted on the front cover mounting portion 51, the second longitudinal axis B coincides with the first longitudinal axis A.

[0032] Furthermore, the end face of the front cover air outlet 52 is a plane 521, and an inwardly convex table 65 is provided between the installation end 63 and the blowing end 62. When the fitting 511 is engaged with the matching portion 6111, the table 65 is used to fit tightly with the plane 521. After the accessory 6 is installed, this tight fit forms a certain airflow sealing effect, so that the airflow is concentrated from the front cover air outlet 52 to the blowing port 621 of the accessory 6 and discharged to the external atmosphere, avoiding airflow loss during the process, which helps to achieve fast installation and removal of the accessory while ensuring air outlet efficiency.

[0033] like Figure 6 and 7As shown, in the airflow generating device 1 of the present application, a second guiding inclined surface 5111 is provided on the side of the fitting 511 away from the air outlet 52. When the accessory 6 is separated from the front cover mounting portion 51, the second guiding inclined surface 5111 is used to guide the matching portion 6111 to disengage from the fitting 511 under the action of an external axial force. The external axial force refers to the force applied by the operator along the first longitudinal axis A, that is, the force that can separate the accessory 6 from the main housing 2.

[0034] Optionally, the airflow generating device 1 of the present application further includes a battery pack 7 for providing power to the motor 3. By bringing the battery pack 7 with it, there is no need to use a power cord, and there is no restriction on plugging in, so the application scenario is wider. Furthermore, the battery pack 7 is detachable for easy charging or direct replacement of the battery pack.

[0035] like Figure 1 As shown, the airflow generating device 1 comprises a grip portion 8, which is arranged at an angle with the first longitudinal axis A of the main housing 2, and a trigger is provided on the grip portion 8 for convenient hand-held operation by a user. A battery pack 7 is detachably mounted at the bottom of the grip portion 8.

[0036] Example 2

[0037] The utility model also provides an airflow generating device 1, comprising: a motor 3; a main housing 2, for accommodating the motor 3, and having a first longitudinal axis A; a fan 4, driven to rotate by the motor 3, for generating airflow in the main housing 2; a front cover 5, located at one end of the main housing 2 along the first longitudinal axis A, and provided with an air outlet 52 for discharging the airflow out of the main housing 2; the front cover 5 comprises a mounting portion 51, for mounting an accessory 6; the mounting portion 51 comprises at least one fitting 511 protruding from the surface of the front cover, and the fitting 511 is used to engage with the matching portion 6111 of the accessory. By designing the fitting 511 on the front cover of the airflow generating device 1, the accessory 6 can be directly plugged in and out, and the disassembly and assembly can be completed in one action, which is simple to operate.

[0038] It should be noted that a person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. This narrative style of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole. Under the concept of the present application, the technical features in the above embodiments or different embodiments may be appropriately combined, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0039] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. An airflow generating device, comprising: Motor; A main housing, for receiving the motor, and having a first longitudinal axis; A fan, driven to rotate by the motor, for generating airflow in the main housing; a front cover, located at one end of the main housing along the first longitudinal axis and provided with an air outlet for discharging airflow out of the main housing; An accessory, detachably mounted on the front cover; It is characterized in that the front cover includes a mounting portion, the mounting portion includes at least one fitting protruding from the surface of the front cover, the accessory is provided with an elastically deformable cantilever, the cantilever has a free end, and the free end is provided with a mating portion for clamping with the fitting.

2. The airflow generating device according to claim 1, characterized in that: The fitting is configured to be cylindrical, square, or irregular in shape, and the matching portion is configured to be a locking hole that matches the shape of the fitting.

3. The airflow generating device according to claim 1, characterized in that: The accessory extends along the second longitudinal axis, and the mounting end and the blowing end are respectively located at two ends of the accessory along the second longitudinal axis, the cantilever is arranged at the mounting end, the mounting end is provided with a mounting port, and the blowing end is provided with a blowing port.

4. The airflow generating device according to claim 3, characterized in that: The cross section of the blowing port is smaller than the cross section of the mounting port.

5. The airflow generating device according to claim 3, characterized in that: The free end of the cantilever faces the mounting opening, and a limiting groove is provided on the inner wall of the accessory, which extends from the mounting opening along the second longitudinal axis to the free end of the cantilever. When the accessory is mated with the front cover mounting portion, the limiting groove is used to guide the matching part to move toward the matching portion.

6. The airflow generating device according to claim 5, characterized in that: The inner wall of the free end of the cantilever is provided with a first guiding inclined surface, and the first guiding inclined surface is used to guide the fitting to move to engage with the matching portion.

7. The airflow generating device according to claim 3, characterized in that: The end face of the air outlet of the front cover is a plane, and an inwardly convex table is provided between the mounting end and the blowing end. When the fitting is engaged with the matching portion, the table is used to fit tightly with the plane.

8. The airflow generating device according to claim 1, characterized in that: A second guiding bevel is provided on the side of the fitting away from the air outlet. When the accessory is separated from the front cover mounting portion, the second guiding bevel is used to guide the matching portion to disengage from the fitting under the action of an external axial force.

9. The airflow generating device according to any one of claims 1 to 8, characterized in that: A battery pack is included to provide power to the motor.

10. An airflow generating device, characterized in that: include: Motor; A main housing, for receiving the motor, and having a first longitudinal axis; A fan, driven to rotate by the motor, for generating airflow in the main housing; a front cover, located at one end of the main housing along the first longitudinal axis and provided with an air outlet for discharging airflow out of the main housing; The front cover includes a mounting portion for mounting accessories; The mounting portion includes at least one fitting part protruding from the surface of the front cover, and the fitting part is used for clamping with the matching part of the accessory.

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