CN113175440A

CN113175440A - Blowing and sucking fan with scram function

Info

Publication number: CN113175440A
Application number: CN202110559537.1A
Authority: CN
Inventors: 金银刚
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-07-27

Abstract

The invention relates to a blowing and sucking fan with an emergency stop function, which comprises a motor assembly, fan blades and a brake assembly, wherein the motor assembly comprises an output shaft, a first shaft sleeve and the fan blades are mounted on the output shaft, the output shaft and the first shaft sleeve synchronously rotate, one end, close to the first shaft sleeve, of each fan blade is provided with a second shaft sleeve, the first shaft sleeve and the second shaft sleeve are sleeved with elastic elements, the elastic elements simultaneously hold the first shaft sleeve and the second shaft sleeve tightly to realize synchronous rotation of the first shaft sleeve and the second shaft sleeve, the brake assembly comprises a brake rod, the brake rod moves towards the elastic elements, and after the brake rod is abutted against the end parts of the elastic elements, the elastic elements loosen the first shaft sleeve, and the brake rod limits the elastic elements to rotate to realize stopping rotation of the fan blades. The blowing and sucking machine can realize emergency stop.

Description

Blowing and sucking fan with scram function

[ technical field ] A method for producing a semiconductor device

The invention relates to a blowing and sucking fan with an emergency stop function, and belongs to the technical field of blowing and sucking fans.

[ background of the invention ]

The blowing and sucking fan is widely applied to daily life as a tool for cleaning the ground such as gardens, streets and the like. At present, a blowing and sucking fan generally comprises a gasoline engine, a fan, an impeller, a blowpipe and other components, and air flow blown by the blowpipe cleans a cleaning target.

Generally, the blowing and sucking machine has two working states, namely a blowing mode and a sucking mode. In the blowing mode, the on-off of the safety switch is controlled by the air inlet cover; when the air suction mode is adopted, the port connected with the air inlet cover is changed into a connection suction pipe, and the suction pipe controls the on-off of the safety switch. In the process of realizing the traditional technology, however, in the traditional blowing and sucking fan, an operator easily contacts with the fan blades which are still in operation when the blowing pipe or the dust bag is detached, so that the damage is caused, and the safety hazard is relatively large.

[ summary of the invention ]

The invention aims to provide a blowing and sucking fan with an emergency stop function, and the blowing and sucking fan can realize emergency stop.

The technical scheme adopted by the invention is as follows:

the utility model provides a blowing and sucking fan with scram function, includes motor element, fan blade and braking subassembly, motor element includes the output shaft, install primary shaft cover and fan blade on the output shaft, the output shaft rotates with primary shaft cover is synchronous, the one end that the fan blade is close to primary shaft cover is equipped with the secondary shaft cover, the cover is equipped with elastic element on primary shaft cover and the secondary shaft cover, elastic element holds primary shaft cover and secondary shaft cover tightly simultaneously, realizes primary shaft cover and secondary shaft cover synchronous rotation, braking subassembly includes the brake lever, the brake lever removes towards elastic element, the brake lever supports the back with elastic element's tip, elastic element loosens primary shaft cover, brake lever restriction elastic element rotates the stall of realizing the fan blade.

The beneficial effects of the invention are as follows:

the invention comprises a motor component, a fan blade and a brake component, wherein the motor component comprises an output shaft, a first shaft sleeve and the fan blade are installed on the output shaft, the output shaft and the first shaft sleeve synchronously rotate, a second shaft sleeve is arranged on the fan blade, an elastic element is simultaneously sleeved on the first shaft sleeve and the second shaft sleeve and simultaneously tightly clasps the first shaft sleeve and the second shaft sleeve, therefore, when the motor component is started, the output shaft drives the first shaft sleeve to rotate, the first shaft sleeve drives the second shaft sleeve to rotate through the elastic element, finally, the fan blade rotates, one side of the first shaft sleeve is provided with the brake component, the brake component comprises a brake rod, the brake rod faces towards the first shaft sleeve, when braking is needed, the brake rod moves towards the first shaft sleeve, after moving to the first shaft sleeve, the brake rod and the end part of the elastic element mutually abut against each other, the brake rod limits the rotation of the elastic element, the output shaft still rotates, namely the first shaft sleeve still rotates, the first shaft sleeve generates torsional force on the inner wall of the elastic element at the moment, and the elastic element cannot rotate under the action of the brake rod, so that the assembly of the elastic element is enlarged under the action of the torsional force of the first shaft sleeve, the first shaft sleeve is loosened, transmission between the first shaft sleeve and the second shaft sleeve is stopped, the motor assembly runs, the fan blade stops rotating, the user cannot be injured even if the user carelessly contacts the fan blade at the moment, and the safety of the electric fan is greatly improved.

In addition, the brake lever and the end part of the elastic element are mutually abutted, the end part in contact is the end part of the elastic element which is tightly embraced with the first shaft sleeve, so that the elastic element stops rotating, the other end of the elastic element is tightly embraced with the second shaft sleeve, the elastic element can limit the rotation of the second shaft sleeve when the elastic element stops rotating, namely the elastic element limits the rotation of the fan blade, so that the fan blade can stop rotating instantly, the possibility of injury of a user is greatly reduced, and the safety of the motor assembly is greatly improved.

Preferably, the brake assembly further comprises a controller and a switch, the controller is connected with the brake rod, the switch controls the controller to be started, and the controller controls the brake rod to move back and forth.

Preferably, the brake assembly comprises a fixed sleeve, the motor assembly is provided with a mounting column, the mounting column is provided with a mounting hole for connecting a screw and a sliding rail for moving the brake rod, the fixed sleeve is provided with a connecting hole for the mounting column to pass through, the fixed sleeve is provided with a pressing plate and a screw, and the fixed sleeve is fixedly connected with the motor assembly through the screw.

Preferably, the elastic element is a torsion spring, the end part of the brake rod facing the torsion spring is provided with a contact surface which is in contact with the end part of the torsion spring, the contact surface is a plane, and the plane can increase the contact area between the torsion spring and the brake rod, so that the brake rod can be ensured to be in conflict with the torsion spring, and the rotation of the torsion spring is limited.

Preferably, the first shaft sleeve is provided with a rotation stopping hole, and the output shaft is in rotation stopping fit with the first shaft sleeve to realize synchronous rotation of the first shaft sleeve and the output shaft.

Preferably, the cross section of the rotation stopping hole is in a flat square shape, and the shape of the output shaft is matched with that of the rotation stopping hole.

Preferably, the end part of the output shaft is provided with threads, the output shaft penetrates through the fan blade, the end part of the output shaft is provided with a nut, the fan blade is connected with the output shaft through the nut, when the torsion spring is loosened from the first shaft sleeve, the nut can limit the position of the fan blade to be changed in a reverse mode, when the brake rod is separated from the torsion spring, the torsion spring can be ensured to tightly hold the first shaft sleeve again, and the integral structure of the wind driven generator is tighter and is connected stably.

Preferably, the blowing and sucking fan comprises a casing, an air inlet and an air outlet are formed in the casing, a first connecting piece used for being connected with an air pipe or a dust bag is arranged at the air outlet, and a second connecting piece used for being connected with the air pipe is arranged at the air inlet.

Preferably, an air inlet cover is installed at the air inlet, one end of the air inlet cover is rotatably connected with the shell, a clamping head is arranged at the other end of the air inlet cover, a clamping buckle matched with the clamping head is arranged on the shell, and the clamping head and the clamping buckle are mutually buckled to realize connection of the air inlet cover and the shell.

Preferably, the buckle includes buckling parts and spring, the buckling parts is used for buckling each other with the dop, spring and buckling parts are connected, be equipped with on the buckling parts and press the splenium, press and press splenium control buckling parts to remove messenger buckling parts and dop alternate segregation.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.

[ description of the drawings ]

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is an exploded view of example 1 of the present invention;

FIG. 2 is an internal side view of embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a sectional view of a motor assembly in embodiment 1 of the invention;

FIG. 5 is a partial enlarged view of portion B of FIG. 4;

fig. 6 is a schematic structural view of a motor assembly in embodiment 1 of the present invention;

fig. 7 is a schematic structural view of a first sleeve in embodiment 1 of the present invention;

FIG. 8 is a schematic structural view of a brake lever according to embodiment 1 of the present invention;

fig. 9 is a schematic structural view of a gettering state in embodiment 1 of the present invention.

Reference numerals: 1 machine shell, 11 air inlet covers, 111 clamping heads, 112 springs, 113 buckling parts, 12 air outlets, 13 air inlets, 14 air pipes, 15 dust collecting bags, 2 motor components, 21 output shafts, 22 threads, 23 screw caps, 24 mounting columns, 241 mounting holes, 31 brake levers, 311 contact surfaces, 32 controllers, 33 switches, 34 fixing sleeves, 35 pressing plates, 36 screws, 41 first shaft sleeves, 411 rotation stopping holes, 42 torsion springs, 43 second shaft sleeves and 5 fan blades.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1:

as shown in fig. 1 to 9, this embodiment shows a blowing and sucking fan with scram function, including motor element 2, fan blade 5 and brake assembly, motor element 2 includes output shaft 21, install first axle sleeve 41 and fan blade 5 on the output shaft 21, output shaft 21 rotates with first axle sleeve 41 is synchronous, fan blade 5 is equipped with second axle sleeve 43 towards the one end of motor element 2, the cover is equipped with elastic element on first axle sleeve 41 and the second axle sleeve 43, elastic element hugs tightly first axle sleeve 41 and second axle sleeve 43 simultaneously, realizes that first axle sleeve 41 rotates with second axle sleeve 43 is synchronous, brake assembly includes brake lever 31, brake lever 31 moves towards first axle sleeve 41, brake lever 31 supports the brake lever with the elastic element tip of turning round after, elastic element loosens first axle sleeve 41, realizes the stall of fan blade 5.

In this embodiment the fan blade 5 is in motor element 2's below, motor element 2 includes motor and output shaft 21, output shaft 21 sets up perpendicularly, first axle sleeve 41 and fan blade 5 are all established on output shaft 21, fan blade 5 is equipped with second axle sleeve 43 towards the one end of first axle sleeve 41, first axle sleeve 41 and second axle sleeve 43 are close to each other, the cover is equipped with elastic element on first axle sleeve 41 and the second axle sleeve 43, in this embodiment elastic element is torsional spring 42, torsional spring 42 embraces simultaneously first axle sleeve 41 and second axle sleeve 43, output shaft 21 bottom surface is equipped with screw thread 22, output shaft 21 is furnished with nut 23, through the restriction of nut 23 fan blade 5 breaks away from output shaft 21. Wherein, first axle sleeve 41 is equipped with the hole 411 that splines, output shaft 21's overall structure with the hole 411 phase-match that splines makes output shaft 21 with first axle sleeve 41 splines the cooperation, realizes first axle sleeve 41 rotates with output shaft 21 synchronous, torsional spring 42 holds tightly simultaneously first axle sleeve 41 and second axle sleeve 43 transmit second axle sleeve 43 through torsional spring 42 with the rotation of first axle sleeve 41, second axle sleeve 43 drives fan blade 5 and rotates, realizes motor element 2 to the kinetic energy transmission of fan blade 5, realizes the normal rotation of fan blade 5. It should be noted that the cross section of the rotation stopping hole 411 in this embodiment is in a flat square shape, and the shape of the output shaft 21 matches with the rotation stopping hole 411, but in other embodiments, the shape of the rotation stopping hole 411 may be in other shapes capable of realizing the rotation stopping function.

In order to enable the fan blade 5 to realize an emergency stop, in this embodiment, the bottom of the motor is provided with the mounting column 24, the mounting column 24 is located on one side of the output shaft 21, the brake assembly includes a fixing sleeve 34, a brake lever 31, a controller 32 and a switch 33, the fixing sleeve 34 is provided with a connecting hole for the mounting column 24 to pass through, the mounting column 24 is provided with a mounting hole 241 for a connecting screw 36, the fixing sleeve 34 is installed on the mounting column 24, the fixing sleeve 34 is fixed on the mounting column 24 through a pressing plate 35 and a screw 36, the fixing sleeve 34 is provided with a sliding rail for the brake lever 31 to move, an end of the sliding rail is aligned with the first shaft sleeve 41, the other end of the brake lever 31 is connected with the controller 32, the controller 32 is provided with the switch 33, the controller 32 controls the controller 32, the brake lever 31 is controlled by the controller 32 to move according to the sliding rail, the end of the brake lever 31 facing the first shaft sleeve 41 is provided with a contact surface 311, the contact surface 311 is planar.

The braking process in this embodiment is as follows:

when braking is needed, a user opens the switch 33, the controller 32 controls the brake lever 31 to move towards the first shaft sleeve 41, the brake lever 31 moves to the first shaft sleeve 41, the end of the torsion spring 42 is in contact with the contact surface 311 of the brake lever 31 in the rotating process of the torsion spring 42, because the contact surface 311 is a plane, the end of the torsion spring 42 can be in full contact with the brake lever 31, so that the brake lever 31 can be ensured to be in contact with the torsion spring 42, the brake lever 31 limits the rotation of the torsion spring 42, the first shaft sleeve 41 is driven by the output shaft 21 to continue rotating, at this time, the outer surface of the first shaft sleeve 41 can generate a torsional force to the inner wall of the torsion spring 42, the torsion spring 42 expands from the size of the end in contact with the brake lever 31 under the action of the torsional force, so that the torsion spring 42 loosens the first shaft sleeve 41, and the transmission between the first shaft sleeve 41 and the second shaft sleeve 43 is disconnected, the output shaft 21 and the first shaft sleeve 41 still rotate, the torsion spring 42 stops rotating under the action of the brake rod 31, the torsion spring 42 is tightly embraced with the second shaft sleeve 43, and therefore the second shaft sleeve 43 also stops rotating, namely, the fan blade 5 stops rotating, so that the fan blade 5 is suddenly stopped in the running process of the motor, the rotation of the motor is not influenced, the service life of the motor is not influenced, the sudden stop of the fan blade 5 can prevent a user from being injured due to careless contact with the fan blade 5, and the response degree improves the safety of the embodiment.

Because the nut 23 is installed to the output shaft 21 bottom, consequently when torsional spring 42 loosens first axle sleeve 41, nut 23 can restrict fan blade 5 takes place to remove in the output shaft 21 axial, when brake lever 31 moves backward and torsional spring 42 separates, first axle sleeve 41 can be held tightly again to torsional spring 42, makes first axle sleeve 41 and second axle sleeve 43 can synchronous rotation, ensures that fan blade 5 can normally rotate.

For making this embodiment can realize the switching of blowing and inhaling function, in this embodiment casing 1 includes air outlet 12 of air intake 13, air outlet 12 and air intake 13 are equipped with first connecting piece and second connecting piece respectively, air intake 13 department installs air inlet cover 11, air inlet cover 11 one end is rotated with casing 1 and is connected, the air inlet cover 11 other end is equipped with dop 111, be equipped with on casing 1 with dop 111 assorted buckle, dop 111 realizes being connected of air inlet cover 11 and casing 1 with the mutual lock of buckle, wherein the buckle includes buckling parts 113 and spring 112, buckling parts 113 is used for with the mutual lock of dop 111, spring 112 and buckling parts 113 are connected, be equipped with on buckling parts 113 and press the splenium, press splenium control buckling parts 113 removal messenger buckling parts 113 and dop 111 alternate segregation according to splenium.

When this embodiment is in the state of blowing, the dop 111 of air inlet cover 11 and the mutual lock of buckle on the casing 1, air duct 14 is installed through first connecting piece in air outlet 12 department, and during the start-up, the air current gets into casing 1 from air inlet cover 11, and rethread fan blade 5 blows out along air duct 14 from air outlet 12, realizes the effect of blowing of this embodiment.

When this embodiment is in the state of induced drafting, draw-in gear 111 and the buckle looks separation on the casing 1 of air inlet cover 11, air duct 14 passes through the second connecting piece and installs in air intake 13 department, dust bag 15 passes through first connecting piece and installs in air outlet 12 department, and during the start-up, the air current gets into casing 1 from air intake 13 along air duct 14, and rethread fan blade 5 gets into dust bag 15 from air outlet 12, realizes the effect of induced drafting of this embodiment.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. The utility model provides a blow and suction fan with scram function which characterized in that: including motor element, fan blade and braking subassembly, motor element includes the output shaft, install primary shaft cover and fan blade on the output shaft, the output shaft rotates with primary shaft cover is synchronous, the one end that the fan blade is close to primary shaft cover is equipped with the secondary shaft cover, the cover is equipped with elastic element on primary shaft cover and the secondary shaft cover, first shaft cover and secondary shaft cover are held tightly simultaneously to elastic element, realize that primary shaft cover and secondary shaft cover rotate in step, braking subassembly includes the brake lever, the brake lever removes towards elastic element, the brake lever supports the back with elastic element's tip, elastic element loosens primary shaft cover, the brake lever restriction elastic element rotates the stall of realizing the fan blade.

2. The blower fan with scram function as set forth in claim 1, wherein: the brake assembly further comprises a controller and a switch, the controller is connected with the brake rod, the switch controls the controller to be started, and the controller controls the brake rod to move back and forth.

3. The blower fan with scram function as set forth in claim 1, wherein: the brake assembly comprises a fixed sleeve, the motor assembly is provided with a mounting column, the mounting column is provided with a mounting hole for connecting a screw and a sliding rail for moving the brake rod, the fixed sleeve is provided with a connecting hole for the mounting column to pass through, the fixed sleeve is provided with a pressing plate and a screw, and the fixed sleeve is fixedly connected with the motor assembly through the screw.

4. The blower fan with scram function as set forth in claim 1, wherein: the elastic element is a torsion spring, a contact surface which is contacted with the end part of the torsion spring is arranged at the end part of the brake rod facing the torsion spring, and the contact surface is a plane.

5. The blower fan with scram function as set forth in claim 1, wherein: the first shaft sleeve is provided with a rotation stopping hole, and the output shaft is in rotation stopping fit with the first shaft sleeve to realize synchronous rotation of the first shaft sleeve and the output shaft.

6. The blower fan with scram function as set forth in claim 5, wherein: the cross section of the rotation stopping hole is in a flat square shape, and the shape of the output shaft is matched with that of the rotation stopping hole.

7. The blower fan with scram function as set forth in claim 1, wherein: the fan blade is characterized in that threads are arranged at the end part of the output shaft, the output shaft penetrates through the fan blade, a nut is installed at the end part of the output shaft, and the fan blade is connected with the output shaft through the nut.

8. The blower fan with scram function as set forth in claim 1, wherein: the blowing and sucking fan comprises a casing, an air inlet and an air outlet are formed in the casing, a first connecting piece used for being connected with an air pipe or a dust bag is arranged at the air outlet, and a second connecting piece used for being connected with the air pipe is arranged at the air inlet.

9. The blower with scram function as set forth in claim 8, wherein: the air inlet department installs the air inlet cover, air inlet cover one end is rotated with the casing and is connected, the air inlet cover other end is equipped with the dop, be equipped with on the casing with dop assorted buckle, the connection of air inlet cover and casing is realized to the mutual lock of dop and buckle.

10. The blower with scram function as set forth in claim 9, wherein: the buckle includes buckling parts and spring, the buckling parts is used for with the mutual lock of dop, spring and buckling parts are connected, be equipped with on the buckling parts and press the splenium, press and press splenium control buckling parts to remove messenger buckling parts and dop alternate segregation.