TWI828440B - Hand dryer air drum - Google Patents

Abstract

A hand dryer air drum includes an air flow generating module and an air drum shell. The air flow generating module includes an air barrel, an electric motor, and a control circuit board arranged sequentially along an extension line. The air barrel It includes an air inlet and an air outlet gap. The air drum shell provides the air flow generation module arrangement. The air drum shell includes a first half shell and a second half shell assembled with the first half shell. The first half shell has an air inlet, and the second half shell has an air inlet. The half shell includes a first sub-shell and a second sub-shell that is selectively separable relative to the first sub-shell. The first sub-shell has a penetration for providing the air flow generating module so that the control circuit board is exposed. The second sub-shell is mounted on the connection port outside the first sub-shell. When the second sub-shell is separated from the first sub-shell, the control circuit board will be exposed.

Description

Hand dryer air drum

The present invention relates to a hand dryer, in particular to a hand dryer with selective separation of sub-shells.

In the existing hand dryer structure, in order to stably assemble the electric motor for generating air flow, the electric motor is often structurally supported by multiple shells and given corresponding functions. For example, JP 4293271B2 discloses a hand dryer, which includes A main body shell and a fan motor. The main body shell includes a rear shell, a front shell, a fan motor support shell located in the main body shell, and a fan motor front shell. The fan motor support shell is fixed to the rear shell. The fan motor is supported on the casing, the fan motor front case is assembled with the fan motor support case, and the fan motor is disposed between the fan motor front case and the fan motor support case.

In addition, the existing hand dryer structure generally separates the electric motor and the control circuit board, and the electric motor, control circuit board and other internal components are covered with multiple casings. However, the above-mentioned JP 4293271B2 does not have a control circuit board. The relationship between the control circuit board and the outer shell is designed so that once the control circuit board must be replaced, the main body shell must be disassembled as a whole to take out the control circuit board. After the replacement is completed, the main body shell must be reassembled. combination, greatly increasing the disassembly and assembly processes.

The main purpose of the present invention is to solve the problem of replacing the control circuit board in the existing structure which does not have a design between the control circuit board and the housing.

To achieve the above object, the present invention provides a hand dryer air drum, which includes an air flow generating module and an air drum shell. The air flow generating module is an integrated structure. The air flow generating module includes an air barrel and an electric motor. And a control circuit board, the air duct, the electric motor and the control circuit board are arranged in sequence along an extension line, the air duct includes an air inlet located on the extension line, and an air duct composed of the electric motor and the air duct The air outlet gap is jointly defined. The air drum shell includes a first half shell, a second half shell assembled with the first half shell, and an air guide hood assembled with the first half shell and the second half shell. The first half shell The air flow generating module is provided with the second half shell. The first half shell has an air inlet facing the air inlet. The second half shell includes a first subassembly that is assembled with the first half shell. shell, and a second sub-shell that is selectively separable from the first sub-shell, the first sub-shell forms a ventilation space connecting the air outlet gap and the air guide hood, the first sub-shell has a The wind flow generating module is inserted through the connection port so that the control circuit board is exposed outside the first sub-shell. The second sub-shell is installed on the connection port. When the second sub-shell is separated from the first sub-shell, it will The control circuit board is exposed for replacement of the control circuit board.

In one embodiment, the first half shell has an air filter mounting bracket, and the air inlet is located within a range enclosed by the air filter mounting bracket.

In one embodiment, the air filter mounting bracket is a detachable component of the first half shell. The first half shell has a plurality of assembly posts facing the air filter mounting bracket. The air filter mounting bracket has a plurality of assembly posts. Each of the assembly structures is selected from one of the following groups: a hole, a connecting piece, and a protruding pillar.

In one embodiment, one end of the electric motor is connected to the interface.

In one embodiment, the air drum shell includes a first collar located in the first half shell and sleeved outside the air barrel.

In one embodiment, the air drum housing includes a second collar located in the first sub-casing and placed outside the electric motor.

In one embodiment, the first sub-shell includes a plurality of assembly lugs disposed along the connecting interface, and the second sub-shell includes a plurality of assembly lugs disposed on the periphery and assembled with the assembly lugs.

In one embodiment, the first half shell includes an accommodating portion in which the air duct is disposed, and an air guide portion extending tangentially from the accommodating portion and communicating with the ventilation space.

In one embodiment, the first sub-shell includes a limiting rib disposed in the ventilation space.

In one embodiment, the air guide includes a connecting base connecting the first half shell and the second half shell, and an air outlet extending from one end of the connecting base, the connecting base being away from the first half shell and the second half shell. The outer surface of the second half shell is a working circuit board installation surface.

Through the foregoing implementation of the present invention, compared with the conventional ones, the present invention has the following characteristics: the present invention uses the first sub-casing to provide the air flow generation module, so that the control circuit board is disposed outside the first sub-casing and passes through the second sub-casing. The sub-shell can be selectively assembled at the interface, so that when the second sub-shell is separated from the first sub-shell, the control circuit board will be exposed for replacement without changing other configurations on the hand dryer air drum. , solving the problem of cumbersome procedures when replacing the control circuit board with a hand dryer.

The detailed description and technical content of the present invention are now described as follows with reference to the drawings:

Hereinafter, the terms "first" and "second" used for components are intended to distinguish the components and are not intended to limit the order of the components.

Please refer to Figures 1 to 5. The present invention provides a hand dryer air drum 20. The hand dryer air drum 20 is part of a hand dryer 50 in application. In actual implementation, the hand dryer 50 has in addition to the hand dryer 50. The air drum 20 further includes a dryer bottom plate 30 and a dryer outer cover 40 . The hand dryer air drum 20 includes an air flow generating module 21 and an air drum shell 23. The air flow generating module 21 is provided in the air drum shell 23. The air flow generating module 21 is an integrated structure. The air flow generating module 21 is an integrated structure. The group 21 includes an air bucket 211, an electric motor 212, and a control circuit board 213. The air bucket 211, the electric motor 212, and the control circuit board 213 are arranged in sequence along an extension line 214. In detail, the air flow generating module 21 adopts a stacked design. The air flow generating module 21 can define the extension line 214 with the axis center of the electric motor 212, and the air barrel 211 and the control circuit board 213 respectively extend along the axis of the electric motor 212. Extension wires 214 are provided at both ends of the electric motor 212 . The air barrel 211 includes an air inlet 215 and an air outlet gap 216. The air inlet 215 is located on the extension line 214 and is formed on the side of the air barrel 211 away from the electric motor 212. The air outlet gap 216 is formed by The air barrel 211 and the electric motor 212 are jointly defined and located on the side of the air barrel 211 facing the electric motor 212 .

Following the above, the air drum shell 23 includes a first half shell 231, a second half shell 232 and an air guide cover 233. The first half shell 231 is assembled with the second half shell 232. The first half shell 231 The wind flow generating module 21 is provided with the second half shell 232 , and the air guide cover 233 is assembled with the first half shell 231 and the second half shell 232 . The first half shell 231 has an air inlet 234 formed on a side of the first half shell 231 away from the second half shell 232 . The second half-shell 232 includes a first sub-shell 235 and a second sub-shell 236. The first sub-shell 235 is assembled with the first half-shell 231 and the air guide cover 233. The first sub-shell 235 is formed There is a ventilation space 237 and an interface 238. In detail, the first sub-casing 235 has a larger space than the electric motor 212, and this space connects the air outlet gap 216 and the air guide 233. This space is defined as the ventilation space 237 in this article. The connecting port 238 is formed on the side of the first sub-shell 235 away from the first half shell 231 . The second sub-shell 236 is disposed on the connecting port 238 and is assembled with the first sub-shell 235 . In one embodiment, the first sub-shell 235 includes a plurality of assembly connection lugs 241, the second sub-case 236 includes a plurality of assembly connection lugs 242, and the assembly connection convex blocks 241 are arranged along the interface 238. The connecting lugs 242 correspond to the assembly bumps 241 and are provided on the periphery of the second sub-shell 236 . The assembly lugs 242 can be assembled with the assembly bumps 241 .

Please refer to Figures 1 to 4 for a detailed description of the relationship between the air drum shell 23 and the air flow generating module 21. In the assembly relationship of the hand dryer air drum 20, the air flow generating module 21 is located on the third On one side of the half shell 231, the air inlet 234 faces the air inlet 215. After that, the first sub-shell 235 is assembled with the first half-shell 231. In the process, the connection port 238 provides the air flow generating module 21 to pass through, and the control circuit board 213 is exposed on the first In addition to the sub-shell 235 , finally, the second sub-shell 236 is installed on the connection port 238 . In one embodiment, one end of the electric motor 212 is connected to the connection 238 . Further, the second half-shell 232 is a detachable structure, and the second sub-shell 236 can be selectively separated from the first sub-shell 235. Please refer to Figure 6. In implementation, the hand dryer air drum 20 is The second sub-shell 236 separates the first sub-shell 235 to expose the control circuit board 213 so that the control circuit board 213 can be replaced without changing other configurations on the dryer air drum 20 . The air drum 20 of the hand dryer of the present invention only needs to selectively disassemble the second sub-shell 236 to replace the control circuit board 213, thereby solving the problem of cumbersome procedures when replacing the control circuit board of conventional hand dryers.

Please refer to Figures 2 to 4 again. It should be noted that the first half shell 231 allows the air barrel 211 to be inserted into and supports the air flow generating module 21. In one embodiment, the air barrel 211 can be covered with an air flow generating module 21. The first collar 243 is located in the first half shell 231, that is, the first collar 243 is located between the air barrel 211 and the first half shell 231. The first collar 243 can be a rubber piece. The first half shell 231 is stabilized to support the implementation of the wind flow generating module 21 . On the other hand, the electric motor 212 can be covered with a second collar 244 located in the first sub-casing 235, that is, the second collar 244 is located between the electric motor 212 and the first sub-casing 235. The second collar 244 may be a rubber member to stabilize the implementation of the first sub-casing 235 supporting the air flow generating module 21 .

Following the above, in one embodiment, the first half shell 231 includes an accommodating part 245 and an air guide part 246. The accommodating part 245 provides a place where the air barrel 211 is disposed, and the air guide part 246 is formed from the accommodating part 245. The air guide portion 245 extends tangentially, and the air guide portion 246 communicates with the ventilation space 237 and the air guide cover 233 . Furthermore, in one embodiment, the first sub-shell 235 includes a limiting rib 247 disposed in the ventilation space 237 .

Please refer to FIGS. 2 to 5 again. In one embodiment, the air guide 233 includes a connecting base 248 and an air outlet 249 . The connecting base 248 connects the first half shell 231 and the second half shell 232 , the connection base 248 is connected with the ventilation space 237 , the air outlet 249 extends from one end of the connection base 248 , further, the connection base 248 has an outer appearance away from the first half shell 231 and the second half shell 232 . Working circuit board installation surface 250. It should be noted that when the hand dryer air drum 20 of the present invention disassembles the second sub-casing 236 and replaces the control circuit board 213, there is no need to change the circuit configuration assembled on the working circuit board mounting surface 250.

Please refer to Figures 2 and 4 again. In one embodiment, the first half shell 231 has an air filter mounting bracket 251. The air filter mounting bracket 251 provides an air filter 252 to be installed on. The air filter element The mounting frame 251 has an air outlet 253. The air outlet 253 is located between the air filter 252 and the air inlet 234. The air outlet 253 is connected to the air inlet 234. Furthermore, the air inlet 234 is located on the air filter mounting frame. 251 within the circle. Further, the air filter mounting bracket 251 is a component that can separate the first half shell 231. The first half shell 231 has a plurality of assembly posts 254, and the assembly posts 254 are provided on the first half shell 231. There is one side of the air filter mounting bracket 251 facing the air filter mounting bracket 251. The air filter mounting bracket 251 has a plurality of assembly structures 255, and each of the assembly structures 255 corresponds to the assembly connections. One of the columns 254, the assembly structures 255 are assembled with the assembly columns 254, wherein the assembly structures 255 are selected from one of the following groups: a hole, a connecting piece, and a convex pillar.

Please refer to Figure 7. The air barrel 211 of the present invention includes a basin 217, a rotatable fan blade 218 and a guide frame 219. The basin 217 is connected to a motor housing 220 of the electric motor 212 and is located on the electric motor. On one side of the motor 212, the rotatable fan blade 218 is located in the basin 217 and connected to a drive shaft 221 of the electric motor 212. The rotatable fan blade 218 is driven by the drive shaft 221 to rotate and generate an air flow. In addition, the air guide frame 219 is located in the basin 217 and fixed to the motor housing 220 . The air guide frame 219 is used to receive the air flow and guide the air flow in a direction facing the electric motor 212 . Further, the basin 217 has a basin bottom 222 located on the side of the basin 217 away from the electric motor 212, and a basin mouth 223 located on the side of the basin 217 facing the electric motor 212. The basin bottom 222 The air inlet 215 is formed, and the basin opening 223 and the motor housing 220 jointly define the air outlet gap 216 .

To sum up, the above is only a preferred embodiment of the present invention. It should not be used to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the patent scope of the present invention should still belong to the present invention. patent coverage.

20:Hand dryer air drum 21: Wind flow generation module 211:Wind barrel 212: Electric motor 213:Control circuit board 214:Extension line 215:Air inlet 216: Air gap 217: Basin body 218: Rotatable fan blade 219: guide frame 220: Motor housing 221:Drive shaft 222:Pelvic floor 223: basin mouth 23:Air drum shell 231:First half shell 232:Second half shell 233:Wind guide cover 234:Air inlet 235:First sub-shell 236:Second sub-shell 237: Ventilation space 238: Interface 241: Assembly bumps 242: Assembly lug 243:The first set of rings 244:Second set of rings 245: Accommodation Department 246: Air guide part 247:Limited Rib 248:Connect base 249:Outdoor 250: Working circuit board installation surface 251: Air filter mounting bracket 252:Air filter 253: Air outlet 254: Group connection column 255: Group connection structure 30: Drying the bottom plate of mobile phone 40: Hand dryer cover 50:Hand dryer

Figure 1 is a schematic assembly diagram of a hand dryer according to an embodiment of the present invention. Figure 2 is an exploded schematic diagram (1) of the three-dimensional structure of the air drum of a hand dryer according to an embodiment of the present invention. Figure 3 is an exploded schematic diagram (2) of the three-dimensional structure of the air drum of a hand dryer according to an embodiment of the present invention. Figure 4 is a schematic cross-sectional view of the air drum structure of a hand dryer according to an embodiment of the present invention. Figure 5 is a schematic cross-sectional view of the air drum structure of a hand dryer according to an embodiment of the present invention. Figure 6 is a schematic diagram of disassembly of the second sub-shell according to an embodiment of the present invention. Figure 7 is a schematic cross-sectional view of the structure of a wind flow generating module according to an embodiment of the present invention.

20:Hand dryer air drum

21: Wind flow generation module

211:Wind barrel

212: Electric motor

213:Control circuit board

214:Extension line

215:Air inlet

231:First half shell

232:Second half shell

233:Wind guide cover

234:Air inlet

235:First sub-shell

236:Second sub-shell

238: Interface

243:The first set of rings

244:Second set of rings

245: Accommodation Department

246: Air guide part

250: Working circuit board installation surface

251: Air filter mounting bracket

252:Air filter

253: Air outlet

254: Group connection column

255: Group connection structure

Claims (12)

A hand dryer air drum, including: An air flow generating module is an integrated structure and includes an air barrel, an electric motor, and a control circuit board. The air barrel, the electric motor, and the control circuit board are sequentially arranged along an extension line. The air barrel includes a An air inlet located on the extension line, and an air outlet gap jointly defined by the electric motor and the air barrel; and An air drum shell includes a first half shell, a second half shell assembled with the first half shell, and an air guide hood assembled with the first half shell and the second half shell, the first half shell The shell and the second half shell provide the air flow generating module arrangement. The first half shell has an air inlet facing the air inlet. The second half shell includes a first half shell assembled with the first half shell. A sub-shell, and a second sub-shell that is selectively separable from the first sub-shell, the first sub-shell forms a ventilation space connecting the air outlet gap and the air guide hood, the first sub-shell has a The air flow generating module is inserted through the connection port so that the control circuit board is exposed outside the first sub-shell. The second sub-shell is mounted on the connection port. When the second sub-shell is separated from the first sub-shell, The control circuit board is exposed for replacement of the control circuit board. The dryer hand air drum according to claim 1, wherein the first half shell has an air filter mounting frame, and the air inlet is located within the range enclosed by the air filter mounting frame. The hand dryer of claim 2, wherein the air filter mounting bracket is a detachable component of the first half shell, and the first half shell has a plurality of assembly posts facing the air filter mounting bracket. , the air filter mounting frame has a plurality of assembly structures assembled with the assembly posts, and each of the assembly structures is selected from one of the following groups: a hole, a connecting piece, and a protrusion. column. The hand dryer as described in any one of claims 1 to 3, wherein one end of the electric motor is connected to the connection port. The hand dryer air drum according to claim 4, wherein the air drum shell includes a first collar located in the first half shell and set outside the air barrel. The hand dryer air drum according to claim 5, wherein the air drum shell includes a second collar located in the first sub-casing and set outside the electric motor. The hand dryer air blower according to claim 4, wherein the first sub-shell includes a plurality of assembly bumps arranged along the connection interface, and the second sub-shell includes a plurality of assembly bumps provided on the periphery and connected with the assembly bumps. Assembly lugs for assembly connections. The hand dryer air drum according to claim 4, wherein the first half shell includes an accommodating portion for providing the air barrel, and an air guide portion extending tangentially from the accommodating portion and communicating with the ventilation space. . The hand dryer air blower of claim 8, wherein the first sub-shell includes a limiting rib provided in the ventilation space. The hand dryer air drum according to claim 1, wherein the first half shell includes an accommodating portion for providing the air barrel, and an air guide portion extending tangentially from the accommodating portion and communicating with the ventilation space. . The hand dryer air blower of claim 10, wherein the first sub-shell includes a limiting rib provided in the ventilation space. The hand dryer of claim 1, wherein the air guide hood includes a connecting base connecting the first half shell and the second half shell, and an air outlet extending from one end of the connecting base, the The outer surface of the connecting base away from the first half shell and the second half shell is a working circuit board mounting surface.

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