CN214499470U - Manual fan - Google Patents
Manual fan Download PDFInfo
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- CN214499470U CN214499470U CN202022914892.XU CN202022914892U CN214499470U CN 214499470 U CN214499470 U CN 214499470U CN 202022914892 U CN202022914892 U CN 202022914892U CN 214499470 U CN214499470 U CN 214499470U
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- fan
- vertical plate
- belt wheel
- manual
- disc
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Abstract
The utility model discloses a manual fan, which comprises a frame, a driving mechanism, a fan mechanism and a transmission mechanism; the rack comprises a bottom plate, a first vertical plate and a second vertical plate; the driving mechanism is arranged on the first vertical plate and comprises a hand wheel and a driving shaft; the fan mechanism is arranged on the second vertical plate and comprises a disc, a fan shaft and fan blades arranged on the disc; the transmission mechanism comprises a first belt wheel, a second belt wheel and a synchronous belt wound on the first belt wheel and the second belt wheel; the first belt wheel is connected with the driving shaft, the second belt wheel is connected with the fan shaft, the driving mechanism drives the first belt wheel to rotate, and the second belt wheel is driven to rotate through the synchronous belt, so that the fan mechanism rotates. Adopt the utility model discloses, can obtain a simple structure, interesting strong, the high manual fan of security.
Description
Technical Field
The utility model relates to a teaching aid field especially relates to a manual fan.
Background
Along with the development of education quality, often adopt the teaching aid to assist the teaching on teaching class. However, the existing teaching aid is often single in structure and lack of interestingness, and students cannot combine the principle with practical application, so that the problems of poor classroom teaching effect, non-concentrated attention of the students and the like are caused.
The existing manual fan has a complex structure and a shell, so that students cannot observe the movement process of the fan, and therefore, it is necessary to develop a manual fan with strong interest, visible components and strong safety.
Disclosure of Invention
The utility model aims to solve the technical problem that a manual fan is provided, simple structure, interesting strong, the security is high.
In order to solve the technical problem, the utility model provides a manual fan, which comprises a frame, a driving mechanism, a fan mechanism and a transmission mechanism;
the rack comprises a bottom plate, a first vertical plate and a second vertical plate; the driving mechanism is arranged on the first vertical plate and comprises a hand wheel and a driving shaft; the fan mechanism is arranged on the second vertical plate and comprises a disc, a fan shaft and fan blades arranged on the disc; the transmission mechanism comprises a first belt wheel, a second belt wheel and a synchronous belt wound on the first belt wheel and the second belt wheel; the first belt wheel is connected with the driving shaft, and the second belt wheel is connected with the fan shaft;
the driving mechanism drives the first belt wheel to rotate and drives the second belt wheel to rotate through the synchronous belt, so that the fan mechanism rotates.
As an improvement of the above scheme, the disc is provided with an installation groove for inserting the fan blade, and the fan blade is installed in the installation groove; the fan blades are perpendicular to the disc.
As an improvement of the scheme, the disc and the fan blades are integrally formed.
As an improvement of the scheme, the fan blades are in a right trapezoid shape, and the lower bottom edge of the fan blades extends downwards to be connected with the disc.
As a modification of the above, the number of teeth of the second pulley is 2 to 3 times the number of teeth of the first pulley.
As an improvement of the above scheme, the bottoms of the first vertical plate and the second vertical plate are connected with the bottom plate through screws.
As an improvement of the scheme, the bottom of the bottom plate is provided with a strip-shaped hole for inserting a screw, the bottom of the first vertical plate and the bottom of the second vertical plate are both provided with two screw holes, and the distance between the screw holes of the first vertical plate and the distance between the screw holes of the second vertical plate are both smaller than the length of the strip-shaped hole.
As an improvement of the above scheme, the second vertical plate is higher than the first vertical plate; the driving shaft is hinged to the first vertical plate; the fan shaft is hinged to the second vertical plate; the hand wheel and the first belt wheel are respectively positioned on two sides of the first vertical plate; the disc and the second belt wheel are respectively positioned on two sides of the second vertical plate.
As an improvement of the scheme, the number of the fan blades is 3-8.
As an improvement of the scheme, the corners of the bottom plate, the first vertical plate and the second vertical plate are provided with arc surfaces.
Implement the utility model discloses, following beneficial effect has:
the utility model comprises a frame, a driving mechanism, a fan mechanism and a transmission mechanism; the driving mechanism drives the transmission mechanism to move so as to drive the fan mechanism to rotate; the synchronous belt is wound on the first belt wheel and the second belt wheel and is meshed with the gear teeth on the first belt wheel and the second belt wheel to realize transmission; the utility model discloses simple structure, the subassembly is visible, utilizes the belt drive principle, realizes power transmission through the hold-in range.
The disc and the fan blades are integrally formed, so that the fan blades are prevented from falling off, and the safety of the manual fan is improved; in addition, the fan blades are perpendicular to the disc, so that when the fan blades rotate, damage to objects touching the fan blades by mistake is reduced, and safety is improved; the first belt wheel and the second belt wheel select a speed-increasing transmission ratio, so that students can know the transmission ratio more deeply. Distance between the screw of first riser and the distance between the screw of second riser all are less than the length in bar hole, when the hold-in range was crossed the pine, can be fixed with first riser and second riser apart from pulling away the after-fixing to the tensioning of realization to the hold-in range.
Adopt the utility model discloses, can obtain a simple structure, interesting strong, the high manual fan of security.
Drawings
Fig. 1 is a perspective view of the manual fan of the present invention;
FIG. 2 is a front view of the hand fan of the present invention;
fig. 3 is a bottom view of the manual fan of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
As shown in fig. 1-2, an embodiment of the present invention provides a manual fan, which includes a frame 1, a driving mechanism 2, a fan mechanism and a transmission mechanism; the driving mechanism 2 drives the transmission mechanism to move so as to drive the fan mechanism to rotate;
the machine frame 1 comprises a bottom plate 11, a first vertical plate 12 and a second vertical plate 13, wherein the first vertical plate 12 and the second vertical plate 13 are respectively connected with the bottom plate 11; the driving mechanism 12 is arranged on the first vertical plate 12, the driving mechanism 2 comprises a hand wheel 21 and a driving shaft 22, and the driving shaft 22 is hinged on the first vertical plate 12; the fan mechanism is arranged on the second vertical plate 13 and comprises a disc 3, a fan shaft 4 and fan blades 5 arranged on the disc 3, and the fan shaft 4 is hinged on the second vertical plate 13; the transmission mechanism comprises a first belt wheel 6, a second belt wheel 7 and a synchronous belt 8 wound on the first belt wheel 6 and the second belt wheel 7; the first belt pulley 6 is connected with the driving shaft 22, and the second belt pulley 7 is connected with the fan shaft 4; the synchronous belt 8 is wound on the first belt wheel 6 and the second belt wheel 7, and the synchronous belt 8 is meshed with gear teeth on the first belt wheel 6 and the second belt wheel 7 to realize transmission;
when the hand wheel 21 rotates, the driving shaft 22 and the first belt wheel 6 are driven to rotate coaxially; the first belt wheel 6 drives the second belt wheel 7 to rotate through the synchronous belt 8, so that the fan shaft 4 and the disc 3 rotate, and the fan effect of the fan blades 5 on the disc 3 is achieved; the hand wheel 21 and the first belt wheel 6 are respectively located on two sides of the first vertical plate 12, the disc 3 and the second belt wheel 7 are respectively located on two sides of the second vertical plate 13, so that components of the manual fan can be seen from the outside, students can visually observe the belt transmission working process of the first belt wheel 6, the second belt wheel 7 and the synchronous belt 8, the mechanical transmission principle of belt transmission is better understood, and the teaching quality is improved.
The second vertical plate 13 is higher than the first vertical plate 12; the driving mechanism 2 and the fan mechanism are not arranged on the same horizontal plane, so that the user is prevented from touching the fan blades 5 and the disc 3 to cause injury in the process of driving the hand wheel 21; preferably, the corners of the bottom plate 11, the first vertical plate 12 and the second vertical plate 13 are all provided with arc surfaces, so that the attractiveness and the safety of the manual fan are improved;
the disc 3 is provided with a mounting groove for inserting the fan blade 5, and the fan blade 5 is mounted in the mounting groove; the fan blades 5 are perpendicular to the disc 3, so that damage to objects touching the fan blades 5 by mistake is reduced when the fan blades 5 rotate; the disc 3 and the fan blades 5 are integrally formed, so that the fan blades 5 are prevented from falling off, and the safety of the manual fan is improved; the fan blades 5 are in a right trapezoid shape, the lower bottom edge of each fan blade extends downwards to be connected with the disc 3, and the fan blades 5 do not contain acute angles, so that a user can be prevented from being scratched when the fan blades rotate, and the safety of the manual fan is improved; the number of the fan blades 5 is 3-8.
The number of teeth of the second belt wheel 7 is 2-3 times that of the first belt wheel 6, so that the rotating speed of the fan mechanism is higher than that of the hand wheel 21, the fan effect is achieved, and the interestingness of the manual fan is improved; in addition, a speed-increasing transmission ratio is selected between the first belt wheel 6 and the second belt wheel 7, so that students can have deeper understanding on the transmission ratio.
As shown in fig. 3, the bottoms of the first vertical plate 12 and the second vertical plate 13 are connected to the bottom plate 11 through screws 9; the bottom of the bottom plate 11 is provided with a strip-shaped hole 111 for inserting a screw 9, the bottom of the first vertical plate 12 and the bottom of the second vertical plate 13 are both provided with two screw holes, the distance between the screw holes of the first vertical plate 12 and the distance between the screw holes of the second vertical plate 13 are both smaller than the length of the strip-shaped hole 111, and when the synchronous belt 8 is loosened, the distance between the first vertical plate 12 and the second vertical plate 13 can be fixed after being pulled away, so that the synchronous belt 8 can be tensioned; preferably, the number of the strip-shaped holes 111 is 1, and the screws 9 penetrate through the strip-shaped holes 111 and the screw holes of the first vertical plate 12, so that the first vertical plate 12 is fixed with the bottom plate 11; when the synchronous belt 8 is replaced, the synchronous belt 8 can be conveniently detached and installed only by loosening the screws 9 inserted in the strip-shaped holes 111 and drawing the distance between the first vertical plate 12 and the second vertical plate 13 close.
Preferably, the bottom plate 11, the first vertical plate 12, the second vertical plate 13, the driving mechanism 2, the fan mechanism and the transmission mechanism are detachably connected, so that the interestingness of the manual fan can be improved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the invention, and these modifications and decorations are also regarded as the protection scope of the present invention.
Claims (10)
1. A manual fan is characterized by comprising a rack, a driving mechanism, a fan mechanism and a transmission mechanism; the rack comprises a bottom plate, a first vertical plate and a second vertical plate; the driving mechanism is arranged on the first vertical plate and comprises a hand wheel and a driving shaft; the fan mechanism is arranged on the second vertical plate and comprises a disc, a fan shaft and fan blades arranged on the disc; the transmission mechanism comprises a first belt wheel, a second belt wheel and a synchronous belt wound on the first belt wheel and the second belt wheel; the first belt wheel is connected with the driving shaft, and the second belt wheel is connected with the fan shaft;
the driving mechanism drives the first belt wheel to rotate and drives the second belt wheel to rotate through the synchronous belt, so that the fan mechanism rotates.
2. The manual fan of claim 1, wherein the disc is provided with a mounting groove for receiving the fan blade, the fan blade being mounted in the mounting groove; the fan blades are perpendicular to the disc.
3. The hand fan of claim 2 wherein said disk and said fan blades are integrally formed.
4. The manual fan of claim 1, wherein said fan blades are in the form of a right-angled trapezoid having a lower base extending downwardly to join said disk.
5. The manual fan of claim 1, wherein the number of teeth of the second pulley is 2-3 times the number of teeth of the first pulley.
6. The manual fan of claim 1, wherein the bottoms of the first and second vertical plates are connected to the base plate by screws.
7. The manual fan of claim 6, wherein a strip-shaped hole for inserting a screw is formed in the bottom of the bottom plate, two screw holes are formed in the bottom of the first vertical plate and the bottom of the second vertical plate, and the distance between the screw holes of the first vertical plate and the distance between the screw holes of the second vertical plate are smaller than the length of the strip-shaped hole.
8. The manual fan of claim 1, wherein the second riser is higher than the first riser; the driving shaft is hinged to the first vertical plate; the fan shaft is hinged to the second vertical plate;
the hand wheel and the first belt wheel are respectively positioned on two sides of the first vertical plate; the disc and the second belt wheel are respectively positioned on two sides of the second vertical plate.
9. The manual fan of claim 1, wherein the number of the fan blades is 3-8.
10. The manual fan of claim 1, wherein the corners of the base plate, the first vertical plate and the second vertical plate are provided with arc surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022914892.XU CN214499470U (en) | 2020-12-08 | 2020-12-08 | Manual fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022914892.XU CN214499470U (en) | 2020-12-08 | 2020-12-08 | Manual fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214499470U true CN214499470U (en) | 2021-10-26 |
Family
ID=78207393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022914892.XU Active CN214499470U (en) | 2020-12-08 | 2020-12-08 | Manual fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499470U (en) |
-
2020
- 2020-12-08 CN CN202022914892.XU patent/CN214499470U/en active Active
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