CN110836194A - Electric fan - Google Patents
Electric fan Download PDFInfo
- Publication number
- CN110836194A CN110836194A CN201810934024.2A CN201810934024A CN110836194A CN 110836194 A CN110836194 A CN 110836194A CN 201810934024 A CN201810934024 A CN 201810934024A CN 110836194 A CN110836194 A CN 110836194A
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- CN
- China
- Prior art keywords
- shaft
- fan
- driving shaft
- motor
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
- F04D25/105—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air by changing rotor axis direction, e.g. oscillating fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
- F04D29/054—Arrangements for joining or assembling shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An electric fan, comprising: a motor having a drive shaft; a turntable pivoted to one end of the motor, the turntable being pivoted with a fan shaft, the fan shaft being disposed askew relative to the drive shaft, and a connecting member formed by a spring being disposed between the drive shaft and the fan shaft for driving the fan shaft, the turntable being driven by a power device to drive the fan shaft to rotate around the drive shaft; the fan blade is arranged on the fan shaft and is driven by the fan shaft; one end of the motor is fixedly provided with a seat body, and the rotary disc is pivoted on the seat body and driven by the power device to rotate; the turntable is provided with a limiting part, the limiting part is provided with a connecting piece and a fan shaft in a pivot mode, and the limiting part limits the fan shaft to be arranged obliquely relative to the driving shaft. The invention can expand the blowing range of the airflow blown by the fan blades and reduce the chance of damage of the connecting piece.
Description
Technical Field
The invention relates to an electric fan, in particular to an electric fan with a fan blade rotating shaft capable of rotating universally to expand the blowing range of airflow.
Background
The applicant of the present application previously filed a utility model application No. 201520805453.1, which is an electric fan, wherein a fan shaft is disposed in a relatively inclined manner with respect to a motor driving shaft and is driven by the motor driving shaft, and then the fan shaft is driven by the rotation of a turntable, so that the fan shaft rotates with respect to the motor rotating shaft, thereby expanding the blowing range of the air flow generated by the fan blade. In the above structure, the fan shaft and the motor driving shaft are connected and driven by a flexible tube, and the fan shaft can rotate relative to the motor rotating shaft through the deformable characteristic of the fan shaft. However, in practical use, the strength of the tube is insufficient, and the tube may be broken after a period of use, which may result in the failure of the electric fan to operate normally.
Disclosure of Invention
The invention aims to provide an electric fan, wherein a fan shaft is arranged in a relatively inclined manner relative to a motor driving shaft and is driven by the motor driving shaft, and then the fan shaft is driven by the rotation of a rotating disc to rotate relative to a motor rotating shaft, so that the blowing range of air flow generated by fan blades is expanded.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric fan, comprising:
a motor having a drive shaft extending therefrom;
a rotary disc, which is pivoted at one end of the motor, a fan shaft is pivoted on the rotary disc, the fan shaft and the driving shaft are oppositely and obliquely arranged, the driving shaft is connected with the fan shaft by a connecting piece, and the rotary disc is driven by a power device to drive the fan shaft to rotate by taking the driving shaft as a center; the connecting piece comprises a spring, a front fixing sleeve connected with the fan shaft and a rear fixing sleeve connected with the driving shaft are respectively arranged at two ends of the spring, the front fixing sleeve and the rear fixing sleeve respectively comprise an inner shaft sleeve and an outer shaft sleeve, the outer shaft sleeve is provided with a shaft cylinder and a chassis, the spring is spirally sleeved on the shaft cylinder and is laterally stopped at a stop block on the chassis, the shaft cylinder is provided with a non-circular shaft hole, the inner shaft sleeve is provided with an outer peripheral wall corresponding to the shape of the shaft hole and is embedded in the shaft hole, the inner shaft sleeve of the front fixing sleeve is fixed on the fan shaft, and the inner shaft sleeve of the rear fixing sleeve is fixed on the driving shaft;
a fan blade, which is arranged on the fan shaft and is driven by the fan shaft.
Furthermore, a base body is fixedly arranged at one end of the motor, and the rotary disc is pivoted on the base body and driven by the power device to rotate; the turntable is provided with a limiting part, the limiting part is provided with the connecting piece and the fan shaft in a pivoted mode, and the limiting part limits the fan shaft and the driving shaft to be arranged in a relatively inclined mode.
The driving shaft of the motor is provided with a first end and a second end, the first end penetrates through the seat body and the rotary table to drive the fan shaft, the power device comprises a second end of the driving shaft of the motor and a first transmission mechanism connected with the second end, the periphery of the rotary table is provided with a first tooth part, and the second end of the driving shaft is provided with a second tooth part; the first transmission mechanism comprises a plurality of gears which are meshed with each other, one end of the first transmission mechanism is meshed with the first tooth part of the rotating disc, and the other end of the first transmission mechanism is meshed with the second tooth part of the driving shaft.
The power device comprises a servo motor fixed on one side of the seat body and a driving gear driven by the servo motor, and an outer tooth part meshed with the driving gear is arranged on the periphery of the rotary disc.
The limiting part is a shell and is provided with an opening, the connecting piece is arranged in the shell, and the opening faces to the direction which is relatively inclined to the driving shaft; the fan shaft is pivoted on the opening and extends out of the opening.
The electric fan also comprises a bracket; the bracket is provided with a shaft seat for pivotally arranging the motor; the second end of the driving shaft is connected with a second transmission mechanism, the second transmission mechanism is connected to a cam, and the shaft seat is connected with the cam through a connecting rod.
The first transmission mechanism and the second transmission mechanism are respectively provided with a pull rod, each pull rod is respectively connected to the second end of the driving shaft through a linkage piece, and the corresponding linkage piece can be separated from the driving shaft by pulling each pull rod.
The invention has the beneficial effects that: the fan shaft of the electric fan is arranged in a relatively inclined manner relative to the motor driving shaft and is connected by the connecting piece formed by the spring, the motor driving shaft drives the fan shaft through the connecting piece, and then the fan shaft is driven to rotate relative to the motor rotating shaft through the rotation of the rotating disc, so that the blowing range of air flow generated by the fan blades can be expanded, and the damage probability of the connecting piece can be reduced.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a perspective exploded view of the present invention.
Fig. 3 is an exploded perspective view of the connector of the present invention.
Fig. 4 is a perspective view of another aspect of the present invention.
Fig. 5 is a rear plan view of the present invention.
Fig. 6 is a side schematic view of a second embodiment of the power plant of the present invention.
Fig. 7 and 8 are schematic views of the operation state of the present invention.
Fig. 9 is a perspective exploded view of the present invention and a bracket.
Detailed Description
Referring to fig. 1 and 2, the electric fan of the present invention is shown, which has a base 11 defining the base 11 having a front side 111 and a rear side 112, wherein the rear side 112 is provided with a motor 2. The motor 2 is extended with a driving shaft 21, the driving shaft 21 has a first end 22 and a second end 23, wherein the first end 22 passes through the seat body 11 and extends out of the front side 111, and the second end 23 extends toward the rear of the seat body 1 and has a screw thread.
On the front side 111 of the seat body 11, a rotatable turntable 3 is provided, and a through hole 31 is provided at the center of the turntable 3 for the first end 22 of the driving shaft 21 to extend out. A limiting part is fixedly arranged on the rotary table 3, a fan shaft 4 is pivoted on the limiting part, and the fan shaft 4 is connected with a fan blade 41; in this embodiment, the limiting portion is a housing 32, a raised portion 33 is disposed on the housing 32, an opening 34 is disposed on a top surface of the raised portion 33, and the fan shaft 4 is inserted through the raised portion 33 and pivoted to the opening 34, and extends out from the opening 34. The raised portion 33 extends in a skewed direction relative to the first end 22 of the drive shaft 21 such that the opening 34 is oriented in a skewed direction relative to the first end 22 of the drive shaft 21 such that the fan shaft 4 is skewed relative to the first end 22 of the drive shaft 21.
The fan shaft 4 is connected to the first end 22 of the driving shaft 21 by a connecting member 5, and the driving shaft 21 drives the fan shaft 4 to rotate synchronously through the connecting member 5, so as to drive the fan blades 41 to rotate to generate an air flow. In the present embodiment, as shown in fig. 3, the connecting member 5 includes a spring 51, a front fixing sleeve 52 and a rear fixing sleeve 53 are respectively disposed at two ends of the spring 51, and both are of the same structure, including an inner shaft sleeve 54A, 54B and an outer shaft sleeve 55A, 55B, wherein the outer shaft sleeve 55A, 55B has a shaft tube 551 and a chassis 552, the chassis 552 has a stop 553 at one side, a lateral stop face 554 is formed on the stop 553, and the spring 51 is spirally sleeved on the outer circumference of the shaft tube 551, and the end thereof is laterally stopped on the stop face 554 of the stop 553; the shaft tube 551 has a shaft hole 555, the shaft hole 555 is not circular but polygonal, the inner sleeves 54A, 54B have an outer peripheral wall 541 corresponding to the shape of the shaft hole 555, and are embedded in the shaft hole 555. The inner sleeve 54A of the front fixing sleeve 52 is fixed to the fan shaft 4 with a pin 56A, and the inner sleeve 54B of the rear fixing sleeve 53 is fixed to the drive shaft 21 with another pin 56B.
With the above structure of the connecting member 5, when the driving shaft 21 rotates, the inner shaft sleeve 54B drives the outer shaft sleeve 55B to rotate, the outer shaft sleeve 55B pushes the spring 51 to rotate through the stop surface 554, then the spring 51 pushes the stop surface of the outer shaft sleeve 55A to rotate the outer shaft sleeve 55A, the outer shaft sleeve 55A drives the inner shaft sleeve 54A to rotate, the inner shaft sleeve 54A further drives the fan shaft 4 to rotate, and accordingly, the driving shaft 21 is driven to rotate the fan shaft 4. The connecting piece 5 can resist the torsion of rotation due to the structural strength of the spring 51, so that the chance of breakage and damage can be reduced, and the normal operation of the electric fan can be ensured.
The turntable 3 is driven by a power device, and further rotates on the seat body 11 by taking the driving shaft 21 as a center, in the embodiment, as shown in fig. 4 and 5, the power device includes the second end 23 of the driving shaft 21 of the motor 2 and a first transmission mechanism 6 connected to the second end, the first transmission mechanism 6 is disposed on the rear side 112 of the seat body 11, and is a gear transmission set composed of a plurality of gears, and includes a first pull rod 61, the first pull rod 61 is provided with a first connecting member 62 and a first gear 63, the first gear 63 is engaged with a second gear 64, and a third gear 65 and the second gear 64 are coaxially disposed, and a gear shaft 66 is connected to the third gear 65 by one end, and the other end extends to the front side 111 of the seat body 11 and is provided with a fourth gear 67; as shown in fig. 1, an external tooth portion 35 is provided on the periphery of the turntable 3, and the fourth gear 67 is engaged with the external tooth portion 35 of the turntable 3. The first linking member 62 is also a gear and is engaged with the second end 23 of the driving shaft 21, so as to transmit the rotation of the driving shaft 21 to rotate the turntable 3.
A second embodiment of the power device, as shown in fig. 6, includes a servo motor 8 fixed on the rear side 112 of the base 11 and a driving gear 81 driven by the servo motor 8, and the periphery of the turntable 3 is provided with an external gear 36 engaged with the driving gear 81, so that the turntable 3 is driven by the servo motor 8 to rotate.
When the turntable 3 rotates, as shown in fig. 7 and 8, the housing 32 is also synchronously carried by the turntable 3. Since the fan shaft 4 is restrained by the opening 34 of the bulge 33, the fan shaft 4 can be driven by the bulge 33 to rotate relative to the driving shaft. By the above operation, the fan blades 41 move in synchronization with the fan shaft 4, and the blowing direction of the generated air flow changes with the rotation of the fan shaft 4 relative to the drive shaft, thereby widening the blowing range.
On the other hand, in the embodiment, as shown in fig. 5, the first link 62 is disengaged from the second end 23 of the driving shaft 21 by pulling the first pull rod 61, so that the driving shaft 21 cannot drive the first transmission mechanism 6, and therefore, the rotation of the turntable 3 is stopped, the fan shaft 4 does not rotate relative to the driving shaft 21, and the blowing direction of the airflow generated by the fan blade 41 is fixed.
Furthermore, as shown in fig. 9, the electric fan of the present invention further includes a bracket 12, the bracket 12 has a shaft seat 13, and the motor 2 is pivotally disposed on the shaft seat 13 by a shaft 14. In addition, a second transmission mechanism 7 is connected to a second end 23 of the driving shaft 21, the second transmission mechanism 7 is connected to a cam 15, and the shaft seat 13 is connected to the cam 15 by a connecting rod 16. The second transmission mechanism 7 is a gear transmission set composed of a plurality of gears as shown in fig. 4 and 5, and includes a second pull rod 71, the second pull rod 71 is provided with a second linkage 72 (here, a gear) engaged with the second end 23 of the driving shaft 21, the bottom end of the second pull rod 71 is provided with a fifth gear 73, and the fifth gear 73 is sequentially connected with a sixth gear 74 and a seventh gear 75, and the seventh gear 75 is connected to the cam 15.
With the above structure, the second end 23 of the driving shaft 21 can drive the cam 15 to rotate via the second transmission mechanism 7, and drive the motor 2 to generate the back and forth swinging motion through the connecting rod 16. On the other hand, in the embodiment, the second linkage member 72 is disengaged from the second end 23 of the driving shaft 21 by pulling the second pull rod 71, so that the driving shaft 21 cannot drive the second transmission mechanism 7, thereby stopping the rotation of the cam 15 and preventing the motor 2 from swinging left and right.
Claims (7)
1. An electric fan, comprising:
a motor having a drive shaft extending therefrom;
a rotary disc, which is pivoted at one end of the motor, a fan shaft is pivoted on the rotary disc, the fan shaft and the driving shaft are oppositely and obliquely arranged, the driving shaft is connected with the fan shaft by a connecting piece, and the rotary disc is driven by a power device to drive the fan shaft to rotate by taking the driving shaft as a center; the connecting piece comprises a spring, a front fixing sleeve connected with the fan shaft and a rear fixing sleeve connected with the driving shaft are respectively arranged at two ends of the spring, the front fixing sleeve and the rear fixing sleeve respectively comprise an inner shaft sleeve and an outer shaft sleeve, the outer shaft sleeve is provided with a shaft cylinder and a chassis, the spring is spirally sleeved on the shaft cylinder and is laterally stopped at a stop block on the chassis, the shaft cylinder is provided with a non-circular shaft hole, the inner shaft sleeve is provided with an outer peripheral wall corresponding to the shape of the shaft hole and is embedded in the shaft hole, the inner shaft sleeve of the front fixing sleeve is fixed on the fan shaft, and the inner shaft sleeve of the rear fixing sleeve is fixed on the driving shaft;
a fan blade, which is arranged on the fan shaft and is driven by the fan shaft.
2. The electric fan as claimed in claim 1, wherein a base is fixed to one end of the motor, and the turntable is pivoted to the base and driven by the power unit to rotate; the turntable is provided with a limiting part, the limiting part is provided with the connecting piece and the fan shaft in a pivoted mode, and the limiting part limits the fan shaft and the driving shaft to be arranged in a relatively inclined mode.
3. The electric fan as claimed in claim 2, wherein the driving shaft of the motor has a first end and a second end, the first end penetrates the housing and the rotating disc to drive the fan shaft, the power device comprises a second end of the driving shaft of the motor and a first transmission mechanism connected to the second end, the rotating disc has a first tooth portion at a periphery thereof, and the second end of the driving shaft has a second tooth portion; the first transmission mechanism comprises a plurality of gears which are meshed with each other, one end of the first transmission mechanism is meshed with the first tooth part of the rotating disc, and the other end of the first transmission mechanism is meshed with the second tooth part of the driving shaft.
4. The electric fan as claimed in claim 2, wherein the power unit comprises a servo motor fixed to one side of the base and a driving gear driven by the servo motor, and the periphery of the rotary plate is provided with an external tooth portion engaged with the driving gear.
5. The electric fan as claimed in claim 3, wherein the restricting portion is a housing provided with an opening in which the coupling member is disposed, the opening facing in a direction relatively askew to the driving shaft; the fan shaft is pivoted on the opening and extends out of the opening.
6. The electric fan as claimed in claim 3, further comprising a bracket; the bracket is provided with a shaft seat for pivotally arranging the motor; the second end of the driving shaft is connected with a second transmission mechanism, the second transmission mechanism is connected to a cam, and the shaft seat is connected with the cam through a connecting rod.
7. The electric fan as claimed in claim 6, wherein the first transmission mechanism and the second transmission mechanism are respectively provided with a pull rod, each pull rod is respectively connected to the second end of the driving shaft by a linkage member, and the corresponding linkage member can be separated from the driving shaft by pulling each pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934024.2A CN110836194A (en) | 2018-08-16 | 2018-08-16 | Electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934024.2A CN110836194A (en) | 2018-08-16 | 2018-08-16 | Electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110836194A true CN110836194A (en) | 2020-02-25 |
Family
ID=69573262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934024.2A Pending CN110836194A (en) | 2018-08-16 | 2018-08-16 | Electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110836194A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB143877A (en) * | 1917-01-06 | 1921-08-18 | Millward Tremain Thomas | Improvements in flexible shaft couplings |
| CN85202685U (en) * | 1985-07-04 | 1986-04-23 | 雷良榆 | Large flexibility torsional spring-damping coupling as high power transmission mechanism |
| WO2004038247A1 (en) * | 2002-10-21 | 2004-05-06 | Square Company | Bi-directional torque-limiting interface |
| CN200982361Y (en) * | 2006-12-14 | 2007-11-28 | 上海宝钢设备检修有限公司 | Tachometer spring type coupling structure |
| CN203939886U (en) * | 2014-05-29 | 2014-11-12 | 浙江和超电机有限公司 | A kind of rapid coupler |
| CN205078480U (en) * | 2015-10-16 | 2016-03-09 | 林明毅 | Electric fan |
| CN107559343A (en) * | 2016-06-30 | 2018-01-09 | 天津雅彩科技有限公司 | A kind of spring coupling |
-
2018
- 2018-08-16 CN CN201810934024.2A patent/CN110836194A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB143877A (en) * | 1917-01-06 | 1921-08-18 | Millward Tremain Thomas | Improvements in flexible shaft couplings |
| CN85202685U (en) * | 1985-07-04 | 1986-04-23 | 雷良榆 | Large flexibility torsional spring-damping coupling as high power transmission mechanism |
| WO2004038247A1 (en) * | 2002-10-21 | 2004-05-06 | Square Company | Bi-directional torque-limiting interface |
| CN200982361Y (en) * | 2006-12-14 | 2007-11-28 | 上海宝钢设备检修有限公司 | Tachometer spring type coupling structure |
| CN203939886U (en) * | 2014-05-29 | 2014-11-12 | 浙江和超电机有限公司 | A kind of rapid coupler |
| CN205078480U (en) * | 2015-10-16 | 2016-03-09 | 林明毅 | Electric fan |
| CN107559343A (en) * | 2016-06-30 | 2018-01-09 | 天津雅彩科技有限公司 | A kind of spring coupling |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200225 |