CN212337707U - Fan press-mounting structure - Google Patents
Fan press-mounting structure Download PDFInfo
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- CN212337707U CN212337707U CN202021387976.6U CN202021387976U CN212337707U CN 212337707 U CN212337707 U CN 212337707U CN 202021387976 U CN202021387976 U CN 202021387976U CN 212337707 U CN212337707 U CN 212337707U
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- fan
- circular plate
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- hole
- fan blade
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Abstract
The utility model discloses a fan pressure equipment structure, it relates to the motor field. The problem of the welded fastening structure or the riveting fixed knot of current fan have the welding seam to open welding or riveting department is not hard up after the long-time work of fan is solved. The technical scheme is characterized by comprising a shaft sleeve, a fan blade, an upper circular plate, a lower circular plate and a pressing sleeve, wherein an upper pressing block and a lower pressing block are arranged at two ends of the fan blade respectively, an upper through hole and an upper flaring groove which are matched with the upper pressing block are formed in the upper circular plate, a lower through hole and a lower flaring groove which are matched with the lower pressing block are formed in the lower circular plate, and the upper pressing block and the lower pressing block are respectively filled in the upper flaring groove and the lower flaring groove after being deformed by riveting. The utility model discloses can improve the steadiness that flabellum and last plectane and lower plectane are connected, and then improve the structural strength of fan, and life, can improve production efficiency and quality, reduce cost and environmental pollution simultaneously.
Description
Technical Field
The utility model relates to a motor field, more specifically says, it relates to a fan pressure equipment structure.
Background
At present, in the motor industry, the installation of the fan blade generally adopts a welding processing technology, that is, the fan blade is fixed with a middle shaft sleeve and circular plates at two ends by welding.
However, the fan production cycle is long and the cost is high due to the adoption of welding processing, and meanwhile, after the fan works for a long time, the situation of welding seam open welding can occur due to the welding quality, so that potential safety quality hazards exist.
The traditional Chinese patent with the publication number of CN109595200A discloses a centrifugal wind wheel, a manufacturing method thereof and a centrifugal fan using the same, wherein the centrifugal wind wheel comprises a wheel cover, a wheel disc and a plurality of wind blades, each wind blade comprises a metal framework and a plastic shell installed on the metal framework, each metal framework comprises a framework main body part and a plurality of positioning blocks protruding from the upper end surface and the lower end surface of the framework main body part, the wheel cover is provided with a plurality of first mounting holes, the wheel disc is provided with a plurality of second mounting holes, the plurality of positioning blocks protruding from the upper end surface and the lower end surface of the framework main body part respectively penetrate through the first mounting holes and the second mounting holes, and the wheel cover, the wheel disc and the metal framework are fixedly installed together.
The wind blade passes through welding or riveting fixed connection together with wheel cap and rim plate in above-mentioned patent, if adopt the riveting fixed, then passes the mounting hole with the locating piece after, carries out the riveting to the convex part of locating piece, makes it take place to warp and can't pass the mounting hole again to the realization is fixed.
But the fan is after long-time work, and not hard up condition can appear in locating piece riveting position, and then can lead to the fan vibration too big, perhaps directly can't continue to use.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a fan pressure equipment structure, its structural strength that can improve the fan, increase of service life.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a fan press-mounting structure comprises an upper circular plate and a fan blade, wherein an upper press-mounting block is arranged at one end of the fan blade, an upper through hole matched with the upper press-mounting block is formed in the upper circular plate, and an upper flaring groove located at the upper through hole is formed in the end face, far away from the fan blade, of the upper circular plate; the upper press-fitting block protrudes out of the end face of the upper circular plate after penetrating through the upper through hole, and is deformed and filled in the upper flaring groove after being riveted.
Further, the upper through hole is a polygonal hole.
Further, the shape of the notch of the upper flaring groove is the same as that of the upper through hole, and the notch is enlarged in equal proportion.
Furthermore, the inner side wall of the upper flaring groove and the axis of the upper through hole form an acute angle of 40-50 degrees.
Furthermore, the upper press mounting block is riveted, deformed and filled in the upper flaring groove and then is flush with the end face of the upper circular plate.
Furthermore, a lower circular plate is arranged at one end of the fan blade, which is far away from the upper circular plate, a lower press-fitting block is arranged at the end part of the fan blade, a lower through hole matched with the lower press-fitting block is formed in the lower circular plate, and a lower flaring groove located at the lower through hole is formed in the end surface, which is far away from the fan blade, of the lower circular plate; and the lower press-fitting block protrudes out of the end face of the lower circular plate after penetrating through the lower through hole, and is deformed and filled in the lower flaring groove after being riveted.
Further, the lower press-fitting block and the upper press-fitting block are the same in shape.
Furthermore, shaft sleeves are arranged among the fan blades, and the fan blades are in embedded fit with the shaft sleeves; the shaft sleeve is characterized in that positioning spigots are arranged at two ends of the shaft sleeve, a positioning hole in interference fit with one of the positioning spigots is formed in the middle of the upper circular plate, a pressing sleeve in contact with the end part of the fan blade is sleeved on the other positioning spigots, and the pressing sleeve is in interference fit with the positioning spigots.
Furthermore, the outer side wall of the shaft sleeve is provided with a clamping groove matched with the fan blade.
Furthermore, an auxiliary bonding layer is arranged between the fan blade and the upper circular plate.
To sum up, the utility model discloses following beneficial effect has:
1. the upper press mounting block is riveted, deformed and filled in the upper reaming groove, so that on one hand, the contact area between the upper press mounting block and the upper circular plate can be increased, and on the other hand, the limit can be increased, so that the connection stability of the fan blade and the upper circular plate is improved, the structural strength of the fan is improved, and the service life of the fan is prolonged;
2. the shape of the notch of the upper flaring groove and the shape of the upper through hole are enlarged in equal proportion, so that the upper flaring groove is filled after the upper press-fitting block is riveted and deformed, and the connection stability is improved;
3. the fan passes through the riveting and the fixed connection of interference fit realization each part, does not need the welding to can improve production efficiency and quality, reduce cost and environmental pollution, the fan has advantages such as firm in connection, fatigue resistance are good and long service life simultaneously.
Drawings
FIG. 1 is a schematic view showing an overall structure of a press-fitting structure of a fan in the embodiment;
FIG. 2 is a schematic structural view of the bushing in the embodiment;
FIG. 3 is a schematic structural view of an upper circular plate in the embodiment;
FIG. 4 is a schematic structural diagram of a fan blade in an embodiment;
FIG. 5 is a schematic structural view of a lower circular plate in the embodiment.
In the figure: 1. a shaft sleeve; 11. a card slot; 12. positioning a spigot; 2. an upper circular plate; 21. positioning holes; 22. an upper through hole; 23. an upper flared slot; 3. a fan blade; 31. pressing a block downwards; 32. mounting a pressing block; 4. a lower circular plate; 41. a lower through hole; 42. a lower flared groove; 5. and (5) pressing the sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Example (b):
a fan press-mounting structure is disclosed, referring to fig. 1 and fig. 2, and comprises a shaft sleeve 1, wherein a plurality of fan blades 3 are uniformly embedded on the outer side wall of the shaft sleeve 1 along the circumferential direction, and a clamping groove 11 matched with the fan blades 3 is formed in the outer side wall of the shaft sleeve 1; the two ends of the shaft sleeve 1 are respectively provided with a positioning spigot 12, the outer diameter of each positioning spigot 12 is smaller than that of the shaft sleeve 1, an upper circular plate 2 in end face contact with the fan blade 3 is sleeved on one positioning spigot 12, a pressing sleeve 5 in end face contact with the fan blade 3 is sleeved on the other positioning spigot 12, the upper circular plate 2 is matched with the pressing sleeve 5, the fan blade 3 is clamped in the pressing sleeve, and axial limiting can be carried out on the fan blade 3.
Referring to fig. 1 to 3, a positioning hole 21 is formed in the middle of the upper circular plate 2, and the outer diameter of the positioning spigot 12 is in interference fit with the inner diameter of the positioning hole 21; the pressing sleeve 5 is in a circular ring shape, and the inner diameter of the pressing sleeve is in interference fit with the outer diameter of the positioning spigot 12; in this embodiment, there is no limit between the slot 11 and the fan blade 3 along the radial direction, if the limit needs to be performed along the radial direction, the slot 11 may be dovetail-shaped or T-shaped, and the fan blade 3 may be adapted thereto.
Referring to fig. 1, 3 and 4, both ends of the fan blade 3 are respectively provided with an upper press-fitting block 32 and a lower press-fitting block 31, in this embodiment, the number of the upper press-fitting block 32 and the lower press-fitting block 31 is one, or a plurality of upper press-fitting blocks 32 or lower press-fitting blocks 31 may be radially arranged at the end of the fan blade 3; an upper through hole 22 matched with the upper press mounting block 32 is formed in the upper circular plate 2, and an upper flaring groove 23 positioned at the upper through hole 22 is formed in the end face, far away from the fan blade 3, of the upper circular plate 2; the upper press-fitting block 32 protrudes from the end face of the upper circular plate 2 after passing through the upper through hole 22, and is deformed and filled in the upper flared groove 23 after being riveted, and the upper press-fitting block 32 is flush with the end face of the upper circular plate 2 after being filled.
Referring to fig. 1, 4 and 5, one end of the fan blade 3 away from the upper circular plate 2 is provided with a lower circular plate 4, and the inner diameter of the lower circular plate 4 is larger than the outer diameters of the shaft sleeve 1 and the pressing sleeve 5; the upper circular plate 2 and the lower circular plate 4 can be flat plates or conical circular plates, and the like, both of which are flat plates in the embodiment, and the fan blades 3 can be designed into various shapes; the lower circular plate 4 is provided with a lower through hole 41 matched with the lower press-mounting block 31, and the end surface of the lower circular plate 4 far away from the fan blade 3 is provided with a lower flaring groove 42 positioned at the lower through hole 41; the lower press-fitting block 31 protrudes from the end face of the lower circular plate 4 after passing through the lower through hole 41, and is deformed and filled in the lower flaring groove 42 after being riveted, and the filled lower press-fitting block 31 is flush with the end face of the lower circular plate 4.
Referring to fig. 3 to 5, in order to facilitate the processing, in the present embodiment, the upper press-fitting block 32 and the lower press-fitting block 31 have the same shape, and the upper through hole 22 and the lower through hole 41 have the same shape; the through hole 22 is taken as an example in the present embodiment for further explanation; the upper through hole 22 is a polygonal hole, and the upper through hole 22 is a pentagon in this embodiment; the shape of the notch of the upper flaring groove 23 is the same as that of the upper through hole 22, and the notch is enlarged in equal proportion, and the acute angle between the inner side wall of the upper flaring groove 23 and the axis of the upper through hole 22 is 40-50 degrees; if the upper through-hole 22 is triangular, a 45-degree isosceles triangle is preferable.
Referring to fig. 1, the upper press-fitting block 32 is riveted to fixedly connect the fan blade 3 to the upper circular plate 2, and the lower press-fitting block 31 is riveted to fixedly connect the fan blade 3 to the lower circular plate 4, so that the fan can be directly applied by riveting and fixing in a light-load working environment; in order to further improve the connection stability between the blades 3 and the upper circular plate 2 and the lower circular plate 4 in the heavy load working environment of the fan, auxiliary adhesive layers (not shown in the drawings) may be provided between the blades 3 and the upper circular plate 2 and between the blades 3 and the lower circular plate 4, and in this embodiment, the auxiliary adhesive layers are formed by curing a metal strong adhesive.
Claims (10)
1. The utility model provides a fan pressure equipment structure which characterized in that: the fan blade is characterized by comprising an upper circular plate and a fan blade, wherein one end of the fan blade is provided with an upper press mounting block, the upper circular plate is provided with an upper through hole matched with the upper press mounting block, and the end surface, far away from the fan blade, of the upper circular plate is provided with an upper flaring groove positioned at the upper through hole; the upper press-fitting block protrudes out of the end face of the upper circular plate after penetrating through the upper through hole, and is deformed and filled in the upper flaring groove after being riveted.
2. A fan press-fitting structure as claimed in claim 1, wherein: the upper through hole is a polygonal hole.
3. A fan press-fitting structure as claimed in claim 1, wherein: the shape of the notch of the upper flaring groove is the same as that of the upper through hole, and the notch is enlarged in equal proportion.
4. A fan press-fitting structure as claimed in claim 1, wherein: the inner side wall of the upper flaring groove and the axis of the upper through hole are clamped by an acute angle of 40-50 degrees.
5. A fan press-fitting structure as claimed in claim 1, wherein: the upper press mounting block is filled in the upper flaring groove through riveting deformation and then is flush with the end face of the upper circular plate.
6. A fan press-fitting structure as claimed in any one of claims 1 to 5, wherein: a lower circular plate is arranged at one end, far away from the upper circular plate, of the fan blade, a lower pressing block is arranged at the end part of the fan blade, a lower through hole matched with the lower pressing block is formed in the lower circular plate, and a lower flaring groove located at the lower through hole is formed in the end face, far away from the fan blade, of the lower circular plate; and the lower press-fitting block protrudes out of the end face of the lower circular plate after penetrating through the lower through hole, and is deformed and filled in the lower flaring groove after being riveted.
7. A fan press-fitting structure as claimed in claim 6, wherein: the lower press-fitting block and the upper press-fitting block are the same in shape.
8. A fan press-fitting structure as claimed in claim 6, wherein: the middle parts of the fan blades are provided with shaft sleeves, and the fan blades are in embedded fit with the shaft sleeves; the shaft sleeve is characterized in that positioning spigots are arranged at two ends of the shaft sleeve, a positioning hole in interference fit with one of the positioning spigots is formed in the middle of the upper circular plate, a pressing sleeve in contact with the end part of the fan blade is sleeved on the other positioning spigots, and the pressing sleeve is in interference fit with the positioning spigots.
9. A fan press-fitting structure as claimed in claim 8, wherein: the outer side wall of the shaft sleeve is provided with a clamping groove matched with the fan blade.
10. A fan press-fitting structure as claimed in any one of claims 1 to 5, wherein: and an auxiliary bonding layer is arranged between the fan blade and the upper circular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021387976.6U CN212337707U (en) | 2020-07-15 | 2020-07-15 | Fan press-mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021387976.6U CN212337707U (en) | 2020-07-15 | 2020-07-15 | Fan press-mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337707U true CN212337707U (en) | 2021-01-12 |
Family
ID=74080760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021387976.6U Active CN212337707U (en) | 2020-07-15 | 2020-07-15 | Fan press-mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212337707U (en) |
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2020
- 2020-07-15 CN CN202021387976.6U patent/CN212337707U/en active Active
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