Blower fan brake structure

Abstract

This invention provides a brake structure for a blower fan that significantly improves user safety during blower fan cleaning. [Solution] A brake structure for a blower fan comprising a housing, a blower fan assembly 20, a drive assembly 30, and a brake assembly 40, wherein the housing consists of a front housing 10, a rear housing 11, and a filter cover 12. The brake assembly includes a brake rig 41 and a stopper rubber 42. When the filter cover is removed from the rear housing, the drive assembly stops the rotation of the blower fan assembly, and the brake rig acts to drive the stopper rubber, bringing it into contact with the blower fan assembly and stopping its rotation. The brake rig, elastically attached to the housing, moves the stopper rubber downward by the action of elastic force and brings it into contact with the blower fan assembly. The blower fan assembly is braked by the frictional force of the stopper rubber.

Description

Technical Field

[0001] The present invention relates to the technical field of blowers, particularly to the brake structure of a blower fan.

Background Art

[0002] Currently, when cleaning the blower fan of a commercially available blower, it is necessary to turn off the power of the entire body before removing the filter cover. However, due to inertia, the blower fan continues to rotate, posing a potential safety risk during operation. Also, this cumbersome procedure has a negative impact on the user experience.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to solve the drawbacks in existing blowers. Specifically, when cleaning the blower fan, it is necessary to turn off the power of the entire device before removing the filter cover. However, due to inertia, the blower fan continues to rotate, resulting in a safety hazard during operation, and the cumbersome procedure has a negative impact on the user experience. The present invention provides a brake structure for the blower fan.

Means for Solving the Problems

[0004] The technical solution for solving the technical problem is as follows.

[0005] The brake structure of the blower fan includes a housing, a blower fan assembly disposed within the housing, a drive assembly disposed within the housing for driving the blower fan assembly, and a braking assembly for stopping the blower fan assembly.

[0006] The housing consists of a front housing, a rear housing, and a filter cover that is removablely attached to the rear housing. The braking assembly includes a brake rig elastically attached to the housing and a stopper rubber attached to the brake rig. When the filter cover is removed from the rear housing, the drive assembly stops the rotation of the blower fan assembly, and the brake rig stops the rotation of the blower fan assembly by bringing the stopper rubber into contact with the blower fan assembly.

[0007] Furthermore, the braking assembly further includes a spring for elastically attaching the brake rig to the housing. The brake rig includes a stopper segment for attaching a stopper rubber and a contact portion for contacting the filter cover.

[0008] Furthermore, the spring is mounted on the upper part of the contact area, and the stopper segment is positioned perpendicular to the contact area.

[0009] Furthermore, the filter cover is equipped with retaining protrusions for fitting onto the brake rig.

[0010] Furthermore, the blower fan assembly includes a blower fan, a blower fan bracket for mounting the blower fan to the rear housing, and an air duct attached to the bottom of the blower fan bracket.

[0011] Furthermore, the blower fan bracket is provided with a positioning groove for fitting the brake rig's stopper segment.

[0012] Furthermore, the drive assembly consists of a motor for rotating the blower fan, a control switch for controlling the motor, and a switch press plate for mounting the control switch to the rear housing.

[0013] Furthermore, the control switch is provided with a first control projection, and the filter cover is provided with a second control projection. The filter cover is attached to the rear housing, and the second control projection contacts the first control projection of the control switch.

[0014] Furthermore, the blower fan is connected to the motor's output shaft via a locking blade in a variable speed configuration. [Effects of the Invention]

[0015] The beneficial effect of the blower fan brake structure provided by this invention is that braking is achieved by removing the filter cover 12 from the rear housing 11. This action causes the brake rig 41, elastically supported by the housing, to move downward by elastic force, driving the stopper rubber 42 into contact with the blower fan assembly 20. As a result, the blower fan assembly 20 rapidly eliminates the inertial effect of the drive assembly 30 that rotates the blower fan 21 under the frictional force of the stopper rubber 42, and stops rotating in a very short time. This effectively improves user safety when cleaning the fan. Furthermore, when the filter cover is removed from the rear housing 11, the drive assembly 30 immediately stops the rotation of the blower fan assembly 20. This allows the user to stop the rotation of the blower assembly without having to stop the entire machine, effectively simplifying the operating procedure and improving the user experience during operation. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic diagram of the brake structure of a blower fan according to the present invention. [Figure 2] This is a schematic diagram of the assembly of the brake structure for a blower fan according to the present invention. [Figure 3] This is a schematic diagram of the structure of the braking assembly within the brake structure of a blower fan according to the present invention. [Figure 4] This is a schematic diagram of the brake structure of the blower fan according to the present invention with the front housing removed. [Figure 5]This is a cross-sectional view of the brake structure of the blower fan according to the present invention with the filter cover attached. [Figure 6] This is a cross-sectional view of the brake structure of the blower fan according to the present invention with the filter cover removed. [Figure 7] This is a second cross-sectional view of the brake structure of the blower fan according to the present invention with the filter cover attached. [Figure 8] This is a second cross-sectional view of the brake structure of the blower fan according to the present invention with the filter cover removed. [Modes for carrying out the invention]

[0017] To make the purpose, technical solutions, and advantages of this invention clearer and easier to understand, the following detailed description will be given with reference to the drawings and embodiments. It should be noted that the specific embodiments described herein are for illustrative purposes only and do not limit the scope of this invention.

[0018] Referring to Figures 1-8, the blower fan brake structure 100 according to the present invention comprises a housing, a blower fan assembly 20 disposed within the housing, a drive assembly 30 disposed within the housing for rotational driving, and a braking assembly 40 for braking and stopping the blower fan. The housing consists of a front housing 10, a rear housing 11, and a filter cover 12 detachably attached to the rear housing 11. The braking assembly 40 includes a brake rig 41 elastically attached to the housing and a stopper rubber 42 attached to the brake rig 41. When the filter cover 12 is removed from the rear housing 11, the drive assembly 30 stops the rotational driving of the blower fan assembly 20. This causes the brake rig 41 to drive the stopper rubber 42 into contact with the blower fan assembly 20, stopping the rotation of the blower fan assembly. The brake structure 100 according to the present invention achieves braking by removing the filter cover 12 from the rear housing 11. This action causes the brake rig 41, elastically supported by the housing, to move downward due to elastic force, driving the stopper rubber 42 into contact with the blower fan assembly 20. As a result, the blower fan assembly 20 rapidly eliminates the inertial effect of the drive assembly 30 that rotates the blower fan 21 under the frictional force of the stopper rubber 42, and stops rotating in a very short time. This effectively improves user safety when cleaning the fan. Furthermore, when the filter cover is removed from the rear housing 11, the drive assembly 30 immediately stops the rotation of the blower fan assembly 20. This allows the user to stop the rotation of the blower assembly without having to stop the entire machine, effectively simplifying the operating procedure and improving the user experience during operation.

[0019] As shown in FIGS. 1, 3, and 5, in the embodiment provided by the present invention, the braking assembly 40 further includes a spring 43 for elastically attaching the brake rig 41 to the housing. The brake rig 41 includes a stopper segment 411 for attaching the stopper rubber 42 and a connection portion 412 for abutting against the filter cover 12. The spring 43 is attached to the upper end of the connection portion 412, and the stopper segment 411 is arranged perpendicular to the connection portion 412. By attaching the spring 43 to the upper part of the connection portion 412 and arranging the stopper segment 411 perpendicular to the connection portion 412, when the filter cover 12 is mounted on the rear housing 11, the stop projection 121 on the filter cover 12 designed to abut within the brake rig 41 fits into the connection portion 412 of the brake rig 41. By this operation, the brake rig 41 is lifted, and the stopper rubber 42 is separated from the blower fan 21. As a result, the drive assembly 30 can rotate the blower fan assembly 20 within the rear housing 11. As shown in FIG. 6, after removing the filter cover 12, the brake rig 41 driven by the elastic force of the spring 43 moves the stopper rubber 42 within the stopper segment 411 and abuts it against the blower fan assembly 20. Thereby, the blower fan assembly 20 can eliminate the inertial influence when the drive assembly 30 rotates the blower fan 21 under the frictional force of the stopper rubber 42 in an extremely short time and stop the rotation. Thereby, the user safety during fan cleaning is effectively improved.

[0020] As shown in Figures 1 and 4, the blower fan assembly 20 comprises a blower fan 21, a blower fan bracket 22 for mounting the blower fan 21 to the rear housing 11, and an air duct 23 located below the blower fan bracket 22. Mounting the blower fan 21 to the rear housing 11 via the blower fan bracket 22 effectively improves the stability of the blower fan 21's installation on the rear housing 11. The air duct 23 below the blower fan bracket 22 efficiently guides the airflow generated by the drive assembly 30 that rotates the blower fan 21 within the rear housing 11, improving the user experience during operation. Furthermore, in the embodiment provided by the present invention, the blower fan bracket 22 is provided with a positioning groove 221 for fitting the stopper segment 411 of the brake rig 41. Fitting the stopper segment 411 of the brake rig 41 into the positioning groove 221 effectively improves the positioning accuracy between the brake rig 41 and the blower fan bracket 22. This ensures that the stopper rubber 42 is positioned relative to the blower fan 21 with the elastic force of the spring 43. This effectively guarantees the braking effect of the braking assembly 40, which eliminates the inertial effect of the blower fan and stops its rotation.

[0021] As shown in Figures 1-3, in the embodiment provided by the present invention, the drive assembly 30 comprises a motor 31 for rotating the blower fan 21, a control switch 32 for controlling the motor 31, and a switch pressing plate 33 for mounting the control switch 32 to the rear housing 11. Mounting the control switch 32 to the rear housing 11 via the switch pressing plate 33 effectively improves the mounting stability of the control switch 32 to the rear housing 11. Furthermore, in this embodiment, the blower fan 21 is variably connected to the output shaft of the motor 31 via a locking blade. This connection method effectively ensures the stability of the transmission link between the blower fan 21 and the output shaft of the motor 31, thereby guaranteeing stability when the motor 31 rotates the blower fan 21 within the rear housing 11, and improving the user experience during operation.

[0022] As shown in FIGS. 7 and 8, the control switch 32 according to the present invention includes a first control protrusion 321, and the filter cover 12 includes a second control protrusion 122. When the filter cover 12 is attached to the rear housing 11, the second control protrusion 122 abuts against the first control protrusion 321 of the control switch 32. When attaching the filter cover 12 to the rear housing 11, the second control protrusion 122 on the filter cover 12 abuts against the first control protrusion 321 of the control switch 32. As a result, the first control protrusion 321 retreats and closes. At this point, the motor 31 drives the blower fan 21 to rotate within the rear housing 11. Further, when the filter cover 12 is attached to the rear housing 11, the stop protrusion 121 on the filter cover 12 designed to abut against the brake ring 41 fits into the connection portion 412 of the brake ring 41. By this operation, the brake ring 41 is lifted, and the stopper rubber 42 is separated from the blower fan 21. As a result, the motor 31 can drive the blower fan 21 to rotate within the rear housing 11. When the filter cover 12 is removed from the rear housing 11, the second control protrusion 122 on the filter cover 12 is detached from the first control protrusion 321 of the control switch 32. As a result, the first control protrusion 321 of the control switch 32 bounces up and is released. At this point, the motor 31 stops driving the blower fan 21 to rotate within the rear housing 11. Then, the brake ring 41 drives the stopper rubber 42 within the stopper segment 411 to move by the elastic force of the spring 43 and abuts against the blower fan assembly 20. As a result, the blower fan 21 eliminates the inertial effect driven by the motor 31 in an extremely short time due to the frictional force of the stopper rubber 42 and stops rotating. Thereby, the safety of the user during blower fan cleaning is effectively improved.

[0023] The above description is merely an embodiment of the present invention and does not limit its scope. Any changes, equivalent substitutions, and improvements made within the scope of the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Description of Reference Numerals

[0024] 100 Blower fan brake structure 10 Front Housing 11 Rear Housing 12 Filter Cover 121 Stopping protrusion 122 Second control protrusion 20 Blower fan assembly 21 Blower fan 22 Blower fan bracket 221 Positioning groove 23 Air duct 30 Drive Assembly 31 Motor 32 control switches 321 First control protrusion 33 Switch Press Plate 40 Brake Assembly 41 Brake rig 411 Stopper Segment 412 Connection part 42 Stopper rubber 43 Spring

Claims

1. A brake structure for a blower fan, The system comprises a housing, a blower fan assembly (20) located within the housing, a drive assembly (30) located within the housing and configured to rotate the blower fan assembly (20), and a braking assembly (40) configured to brake and stop the fan. The housing includes a front housing (10), a rear housing (11), and a filter cover (12) that is removablely attached to the rear housing (11). The braking assembly (40) includes a brake rig (41) elastically attached to the housing and a stopper rubber (42) positioned on the brake rig (41). When the filter cover (12) is removed from the rear housing (11), the drive assembly (30) stops the rotational drive of the blower fan assembly (20), and the brake rig (41) stops the rotation of the blower fan assembly (20) by bringing the stopper rubber (42) into contact with the blower fan assembly (20). A brake structure for a blower fan, characterized by the following features.

2. The braking assembly (40) further includes a spring (43) for elastically attaching the brake rig (41) to the housing, The brake rig (41) is characterized by comprising a stopper segment (411) for attaching a stopper rubber (42) and a connecting portion (412) for contacting a filter cover (12), as described in claim 1.

3. The brake structure for a blower fan according to claim 2, characterized in that the spring (43) is attached to the upper end of the connecting portion (412), and the stopper segment (411) is arranged perpendicular to the connecting portion (412).

4. The brake structure for a blower fan according to claim 3, characterized in that the filter cover (12) is provided with a retaining projection (121) for being fitted into the brake rig (41).

5. The blower fan brake structure according to claim 2, characterized in that the blower fan assembly (20) includes a blower fan (21), a blower fan bracket (22) for attaching the blower fan (21) to the rear housing (11), and an air duct (23) attached to the bottom of the blower fan bracket (22).

6. The blower fan brake structure according to claim 5, characterized in that the blower fan bracket (22) is provided with a positioning groove (221) for fitting the stopper segment (411) of the brake rig (41).

7. The brake structure for a blower fan according to claim 5, characterized in that the drive assembly (30) comprises a motor (31) for rotating the blower fan (21), a control switch (32) for controlling the motor (31), and a switch pressing plate (33) for mounting the control switch (32) to the rear housing (11).

8. The brake structure for a blower fan according to claim 7, characterized in that the control switch (32) is provided with a first control projection (321), the filter cover (12) is provided with a second control projection (122), the filter cover (12) is attached to the rear housing (11), and the second control projection (122) abuts against the first control projection (321) of the control switch (32).

9. The blower fan brake structure according to claim 7, characterized in that the blower fan (21) is connected to the output shaft of the motor (31) via a locking blade.

Images