Air flow channel switching structure

Abstract

An air flow channel switching apparatus includes a housing. A front end of the housing is provided with air inlet and outlet. An interior of the housing is provided with a blower assembly and an vacuum assembly. One sides of the blower assembly and the vacuum assembly are provided with at least one group of air duct switching assembly. The air duct switching assembly includes a mounting bracket, a pipe connector, a flexible hose, and a rotating assembly.

Claims

1. An air flow channel switching structure, comprising a device including a housing; wherein a front end of the housing is provided with an air inlet and outlet; wherein an interior of the housing is provided with a blower assembly and a vacuum assembly, one side of the blower assembly and vacuum assembly is provided with at least one group of air duct switching assembly; wherein the air duct switching assembly comprises a mounting bracket, a pipe connector, a flexible hose and a rotating assembly; wherein the cavity is provided in the mounting bracket, a bottom of the cavity is provided with one or more groups of air inlet connecting port and air outlet connecting port, and a top of the cavity is provided with a hole, the hole extends to two opposite sides of the air inlet connecting port and the air outlet connecting port on the bottom of the cavity, the blower assembly is mutually communicated with the air outlet connecting port on the air duct switching assembly through the pipe connector, the vacuum assembly is mutually communicated with an air inlet connecting port4 on the air duct switching assembly through the pipe connector; wherein the pipe connector is slidably installed in the cavity on the mounting bracket, and the pipe connector is matched with the cavity; wherein the pipe connector comprises a base plate arranged below, wherein a spring is disposed on the base plate, an circular cover plate is arranged above the spring, the circular cover plate is sleeved on the base plate; wherein two sides of the base plate are provided with two convex platforms respectively, and the convex platforms extend out of the cavity; wherein the rotating assembly comprises a control handle arranged on one side, wherein the control handle penetrates through the housing and is rotatably connected with the housing, a u-shaped bracket is arranged on the inner side of the control handle, the u-shaped brackets are provided with two limit sliding holes respectively, the rotating assembly is connected flexibly with the pipe connector through the limit sliding hole1 and the convex platforms; wherein the flexible hose is arranged at one side of the pipe connector, one end of the flexible hose is in fit connection with the pipe connector, the other end of the flexible hose passes through a hole of the cavity and is matched and butted with an air inlet and outlet, and the air inlet and outlet can be externally connected with the hose; and wherein by twisting the control handle on the rotating assembly up or down, the u-shaped bracket turns up or down while connecting the pipe connector, when the pipe connector moves to the air outlet connection port on the air duct switching assembly, the flexible hose is connected to the air outlet of the blower assembly, then, this is the blowing mode, when the pipe connector moves to the air inlet connection port on the air duct switching assembly, the flexible hose is connected with the air inlet of the vacuum assembly, this is the suction mode, the device’s blowing mode and suction mode are very easy to operate, and the structure is simple.

2. The air flow channel switching structure of claim 1, wherein the bottom part in the cavity, the opening of the air inlet connecting port and the opening of the air outlet connecting port are respectively provided with an annular groove; and the annular groove can also be provided with an adaptive elastic rubber pad.

3. The air flow channel switching structure of claim 1, wherein the bottom face of the base plate is provided with an annular arc convex platforms, and the annular arc convex platforms is matched with the annular groove inside the cavity, when the base plate moves to the inlet air connection port or outlet air connection port, under the elastic force of the spring, the annular arc convex platforms is stuck into the annular groove, which effectively prevents the misalignment of the pipe connector, affecting the blowing or suction effect of the device, and effectively prevents the hair from getting stuck into the air duct switching assembly during the suction process, then, it reduces the failure of the air duct switching assembly during use, the bottom face of the base plate can also be designed as a flat or curved shape.

4. The air flow channel switching structure of claim 1, wherein two opposite side walls of the mounting bracket are provided with one or more groups of chute, the chute on the mounting bracket are matched with the convex platforms on the base plate, and the convex platforms on the base plate moves up and down/leftwards along with the base plate, move within chute.

5. The air flow channel switching structure of claim 2, wherein the bottom surface part in the cavity can also be designed as a flat or curved shape, the bottom surface part in contact with the pipe connector is matched.

6. The air flow channel switching structure of claim 1, wherein one side surface of the u-shaped bracket is provided with a contact piece and a contact piece, and the contact piece is arranged at one side of the contact piece.

7. The air flow channel switching structure of claim 6, wherein a corresponding trigger device is installed above a contact piece on the u-shaped bracket, and the trigger device is fixed on the housing through a screw or a buckle, a corresponding trigger device is installed below the contact piece on the u-shaped bracket, the trigger device is fastened to the housing by means of screws or snaps.

8. The air channel switching structure of claim 1, wherein the device further comprises a circuit board and a driving circuit matched with the circuit board, wherein the circuit board is installed at one side inside the housing.

9. The air flow channel switching structure of claim 1, wherein the air blower assembly includes a motor assembly and electric heating wire installed on the inner side of the housing of the air blower assembly, motor assembly, electric heating wire, trigger device are electrically connected with the circuit board; twist the control handle downward, and the u-shaped bracket on the control handle moves the pipe connector downward, when the annular arc convex platforms on the bottom face of the base plate of the pipe connector is stuck into the annular groove inside the lower part of the cavity, the contact piece on the u-shaped bracket is in contact with the trigger device, turn on the corresponding switch button on the device, the motor assembly in the blower assembly is energized with the electric heater to start, and the blower assembly blows the air outward.

10. The air flow channel switching structure of claim 1, wherein the vacuum assembly also comprises a motor assembly arranged at one side of the housing of the vacuum assembly and a dust cup with air filter assembly arranged in front of the motor assembly, the motor assembly and the trigger device are electrically connected with the circuit board, the u-shaped bracket on the control handle is linked with the pipe connector to move upwards by twisting the control handle upwards, when the annular arc convex platforms on the bottom surface of the base plate of the pipe connector is clamped into the annular groove above the inside of the cavity, the contact piece on the u-shaped bracket is contacted with the trigger device, turn on the corresponding switch button on the device, motor assembly in the vacuum assembly is energized to work, and the vacuum assembly draws air or dust into the dust cup.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 is a perspective view of an air flow channel switching structure of the invention;

[0028] FIG. 2 is a perspective view showing internal characteristics of the air flow channel switching structure when blowing;

[0029] FIG. 3 is a perspective view showing the air duct switching assembly when blowing in FIG. 2;

[0030] FIG. 4 is a view similar to FIG. 2 showing the invention when suctioning;

[0031] FIG. 5 is a perspective view showing the air duct switching assembly when suctioning in FIG. 4;

[0032] FIG. 6 is an exploded view of the air duct switching assembly;

[0033] FIG. 7 is a perspective view of the rotating assembly;

[0034] FIG. 8 is an exploded view of the pipe connector;

[0035] FIG. 9 is a perspective view of the mounting bracket;

[0036] FIG. 10 is a perspective view of the pipe connector; and

[0037] FIG. 11 is another perspective view of the pipe connector.

DETAILED DESCRIPTION OF THE INVENTION

[0038] Referring to FIGS. 1 to 11, an air flow channel switching structure in accordance with the invention comprises a device 1. The device 1 comprises a housing 11. The front end of the housing 11 is provided with an air inlet and outlet 13, and the interior of the housing 11 is provided with a blower assembly 15 and a vacuum assembly 16 and at least one group of air duct switching assembly 12 is installed on one side of the blower assembly 15 and the vacuum assembly 16. The air duct switching assembly 12 is formed by a mounting bracket 122, a pipe connector 123, a flexible hose 124 and a rotating assembly 121. A cavity 1221 is provided in the mounting bracket 122. A group or more groups of air inlet connecting port 1224 and air outlet connecting port 1225 are provided at the bottom of the cavity 1221. A hole 1226 is at the top of the cavity 1221. The hole 1226 extends to the air inlet connecting port 1224 on the bottom of cavity 1221 and the opposite sides of the air outlet connecting port 1225 on the bottom of cavity 1221. The outlet of the blower assembly 15 is transferred with the air outlet connecting port 1225 on the air duct switching assembly 12 through the pipe connector 123. The air inlet of the vacuum assembly 16 is communicated with the air inlet connecting port 1224 on the air duct switching assembly 12 through the pipe connector 123. The pipe connector 123 is glibly installed in the cavity 1221 on the mounting bracket 122. The pipe connector 123 is adapted to the cavity 1221. The pipe connector 123 includes a base plate 1231 arranged below. The housing wall of the base plate 1231 has an annular groove. And the groove is installed with a spring 1232. The spring 1232 is provided with an circular cover plate 1233, and the circular cover plate 1233 set on the base plate 1231. The two sides of the base plate 1231 is provided with two convex platforms 1234 respectively. The convex platforms 1234 extend out of the cavity 1221 outer wall. The rotating assembly 121 includes a control handle 1211 on the mounting side, which runs through the housing 11 and is rotatably connected with the housing 11. The inner side of the control handle 1211 is provided with a u-shaped bracket 1212, and the two side walls of the opening of the u-shaped bracket 1212 are provided with limited position sliding holes. The rotating assembly 121 is connected with the pipe connector 123 through the limit slip hole and the convex platforms 1234. The flexible hose 124 is installed on one side of the pipe connector 123. One end of the flexible hose 124 is connected with the pipe connector 123. The other end of flexible hose 124 passes through the hole 1226 at the top of cavity 1221 to connect with the air inlet and outlet 13. The air inlet and outlet 13 can be connected to the external hose. The flexible hose 124 is a flexible hose with deformation and malleability. At the same time, the pipe connector 123 is connected. When the pipe connector 123 moves to the air outlet connecting port 1225 on the air duct switching assembly 12, the flexible hose 124 is connected to the air outlet of the blower assembly 15, this is the blowing mode. When the pipe connector 123 moves to the air inlet connecting port 1224 on the air duct switching assembly 12, the flexible hose 124 is connected with the air inlet of the vacuum assembly 16. This is the suction mode, the device’s blowing mode and suction mode are very easy to operate, and the structure is simple.

[0039] An annular groove 1222 is provided on the inner bottom surface of cavity 1221 and is located at the inlet air connection opening and outlet air connection opening. An adaptive elastic rubber cushion can also be set in the annular groove 1222 to increase air tightness. The bottom surface of the base plate 1231 is provided with an annular arc convex platforms 12312 which is matched with the annular groove 1222 in cavity 1221. When the base plate 1231 slides to the air inlet connecting port 1224 or the air outlet connecting port 1225, the annular arc convex platforms 12312 is firmly clamped into the annular groove 1222 under the elastic force of the spring 1232, so that the connection dislocation of the pipe connector 123 is effectively prevented, and the blowing/suction effect of the device 1 is influenced. In addition, the hair can be effectively prevented from being clamped into the air duct switching assembly 12 during suction, thereby reducing the failure of the air duct switching assembly 12 in use. The bottom surface of the base plate 1231 can also be designed as a flat or curved shape. The two opposite sidewalls of the mounting bracket 122 are provided with one or more groups of chute 1223. The chute 1223 on the mounting bracket 122 are matched with the convex platforms 1234 on the base plate 1231, wherein, the convex platforms 1234 on the base plate 1231 move up and down or left along with the base plate 1231, and the convex platforms 1234 on the cavity 1221 move up and down or left or right in the chute 1223 to prevent the pipe connector 123 from shaking or rotating in the cavity 1221 or the curved surface. A bottom surface portion in contact with the pipe connector 123 is fitted.

[0040] A corresponding trigger device 17 is installed above the contact piece 1213 on the u-shaped bracket 1212, and the trigger device 17 is fixed on the housing 11 through screws or fasteners. The corresponding trigger device 18 is installed below the contact piece 1214 on the u-shaped bracket 1212, and the trigger device 18 is fixed on the housing 11 through screws or fasteners. The contact piece 1213 corresponds to the trigger device 17, and the contact piece 1214 corresponds to the trigger device 18. The trigger device 17 and trigger device 18 are a kind of device to open and close the circuit, which can be set into contact switch and induction switch, and is compatible with contact piece 1213 and contact piece 1214. The device 1 also includes a circuit board 14 and a driving circuit which is compatible with the circuit board 14. The circuit board 14 is installed in the inner side of the housing 11. The blower assembly 15 comprises a motor assembly and an electric heating wire installed on the inner side of the blower assembly 15 housing; motor assembly, electric heating wire, trigger device 17 are electrically connected with the circuit board 14. Twist the control handle 1211 downward, u-shaped bracket 1212 linkage pipe connector 123 on the control handle 1211 moves downward, when the pipe connector 123 is stuck into the annular arc convex platforms 12312 on the bottom face of the base plate 1231 into the annular groove 1222 on the bottom of the cavity 1221. The contact piece 1213 on u-shaped bracket 1212 is in contact with trigger device 17. At this time, turn on the corresponding switch button on the device 1. The motor assembly in the blower assembly 15 corresponding switch button on the device 1. The motor assembly in the blower assembly 15 is energized with the electric heater to start, and blower assembly 15 blows air outward; the vacuum assembly 16 also includes a motor assembly mounted on the inside side of the vacuum assembly 16 housing and a dust cup with air filter assembly mounted in front of the motor assembly. The motor assembly and trigger device 18 are electrically connected with circuit board 14, and the control handle 1211 is twisted upward. The u-shaped bracket 1212 on the control handle 1211 is connected to the pipe connector 123. When the annular arc convex platforms 12312 on the bottom face of the base plate 1231 of the pipe connector 123 is stuck into the annular groove 1222 on the inside of the cavity 1221, the contact piece 1214 on the u-shaped bracket 1212 is in contact with the trigger device 18. At this time, turn on the corresponding switch button on the device 1, and the motor assembly in the vacuum assembly 16 is powered on. The vacuum assembly 16 draws air or dust into the dust cup.

[0041] Working of the invention: in the invention, the air duct switching assembly 12 is used in this invention. First, it connects the plug-in wire on the device 1 to the adaptive power supply, and then connect the adaptive external connection hose on the intake and outlet of the device 1. When the user needs the blowing function/suction function, simply by twisting the control handle 1211 on the rotating assembly 121 upward or downward. The u-shaped bracket 1212 rotates upward or downward, moves up or down with the convex platforms 1234 on base plate 1231 through the upper limit sliding hole 12121 of u-shaped bracket 1212, and links the pipe connector 123 at the same time. If the pipe connector 123 moves to the air outlet connection port on air duct switching assembly 12, this is the blowing mode. When the annular arc convex platforms 12312 on the bottom face of the base plate 1231 is stuck into the annular groove 1222 on the inside of the cavity 1221, the contact piece 1213 on the u-shaped bracket 1212 is in contact with the trigger device 17. At this time, turn on the corresponding switch button on the device 1. The circuit board 14 and the driving circuit compatible with circuit board 14 (the driving circuit belongs to the prior art, and will not be explained in detail here) connect the power supply of the blower assembly 15. The motor assembly in the blower assembly 15 is energized with the electric heater to start, and the blower assembly 15 blew the air outward. If the pipe connector 123 moves to the air inlet connection port on the air duct switching assembly 12. This is suction mode. When the annular arc convex platforms 12312 on the bottom face of the base plate 1231 for the pipe connector 123 is stuck into the annular groove 1222 on the bottom of the cavity 1221, the contact piece 1214 on the u-shaped bracket 1212 is in contact with the trigger device 18. At this time, turn on the corresponding switch button on the device 1. Circuit board 14 is connected to the power supply of the vacuum assembly 16. The motor in the vacuum assembly 16 is energized. The device’s blowing mode and suction mode are very easy to operate, and the structure is simple.

[0042] Wherein, the air inlet connecting port 1224 of the air duct switching assembly 12 is connected to the dust cup with air filter assembly of the vacuum assembly 16 through the pipe connector 123, and dust cup with air filter assembly is used to filter and store the inhaled dust and hair.

[0043] While the invention has been described in terms of preferred embodiments, those skilled in the art will recognize that the invention can be practiced with modifications within the spirit and scope of the appended claims.