CN219081876U

CN219081876U - Anti-loosening structure for driving shaft and fan blade of fan motor

Info

Publication number: CN219081876U
Application number: CN202223483825.2U
Authority: CN
Inventors: 赵岳军
Original assignee: Shanghai Junhong Electromechanical Technology Co ltd
Current assignee: Shanghai Junhong Electromechanical Technology Co ltd
Priority date: 2022-12-24
Filing date: 2022-12-24
Publication date: 2023-05-26
Anticipated expiration: 2032-12-24

Abstract

The utility model relates to a driving shaft and fan blade anti-loosening structure of a fan motor, and belongs to the technical field of motor equipment. The utility model provides a structure is too single problem that is arranged in preventing the flabellum pine in mainly aiming at current product, proposes following technical scheme, including drive shaft and flabellum, be provided with mounting one and joint subassembly in the drive shaft, and joint subassembly is located the below of mounting one, be provided with the mounting two that are used for corresponding fixed flabellum under the mounting one, mounting two includes solid fixed ring two, and gu fixed ring two's top is provided with a plurality of plug-in components two that are used for grafting flabellum along the circumferencial direction, and gu fixed ring two's bottom an organic whole is provided with the sleeve. The elastic supporting ring is arranged by matching the first fixing piece and the second fixing piece, so that the elastic supporting ring is replaced by the elastic supporting ring in the prior art. And further under the condition of realizing the assembly of the fan blades, the anti-loosening effect of the fan blades is enhanced through the abutting of the first pair of fan blades and the second pair of fan blades and the insertion limiting between the first pair of fan blades and the second pair of fan blades.

Description

Anti-loosening structure for driving shaft and fan blade of fan motor

Technical Field

The utility model relates to the technical field of motor equipment, in particular to a driving shaft and fan blade anti-loosening structure of a fan motor.

Background

The motor in the fan motor is a speed reducing motor, and the connection of the rotating shaft in the speed reducer and the fan blades influences the rotation of the fan blades, so that the operation of the speed reducer is directly influenced. The fan blade and the rotating shaft are usually sleeved by a common ring, so that the situation that the fan blade is loose is easy to occur, the speed reducer is not smooth to operate, and even the fan blade and the speed reducer are damaged.

The prior Chinese patent with the bulletin number of CN210033933U discloses a connection structure of a rotating shaft and fan blades, wherein an annular groove is formed in the rotating shaft, an elastic anti-drop ring is arranged in the groove, a bulge is arranged on the outer surface of the elastic anti-drop ring, and the rotating shaft with the elastic anti-drop ring is inserted into a rotating shaft jack of the fan blades to realize connection of the rotating shaft and the fan blades. Compared with the prior art, the elastic anti-slip ring is adopted to increase friction, the bulge on the elastic anti-slip ring can prevent the rotating shaft from loosening, and meanwhile, the elastic compensation can be increased due to the fact that the elastic anti-slip ring has certain elasticity; and the fixing block is arranged to lock the rotating shaft and the fan blade together, so that the rotating shaft and the fan blade rotate at the same speed.

The technical scheme in the above patent document realizes the anti-loosening assembly between the motor rotating shaft (driving shaft) and the fan blades, but the anti-loosening effect of the connection between the fan blades and the rotating shaft (driving shaft) is only dependent on a single elastic anti-loosening ring, the anti-loosening pressure on the anti-loosening ring is large, and if the anti-loosening ring is damaged, the safety of the fan blade assembly is difficult to ensure, so that the fan blade assembly is ensured by a structure with a multistage anti-loosening effect.

Therefore, how to process the motor apparatus is a technical problem that a person skilled in the art needs to solve at present.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a driving shaft and fan blade anti-loosening structure of a fan motor.

The technical scheme of the utility model is as follows: the driving shaft and fan blade anti-loosening structure of the fan motor comprises a driving shaft and fan blades, wherein a first fixing piece and a clamping assembly are arranged on the driving shaft, the clamping assembly is positioned below the first fixing piece, and a second fixing piece for correspondingly fixing the fan blades is arranged right below the first fixing piece;

the second fixing part comprises a second fixing ring, a plurality of second plug-in components for plugging fan blades are arranged at the top of the second fixing ring along the circumferential direction, sleeves are integrally arranged at the bottom of the second fixing ring, guide strips are symmetrically arranged on the inner wall of the sleeve, and an inner ring is rotationally connected to the bottom of the sleeve;

the clamping assembly comprises a cavity formed in the driving shaft, a movable disc is slidably connected in the cavity, a screw is rotationally connected to the bottom end of the movable disc, supporting rods are symmetrically arranged at the top ends of the movable disc, and spring telescopic rods used for limiting clamping are movably connected to the top ends of the supporting rods.

Preferably, the first fixing part comprises a first fixing ring fixedly connected to the outer ring of the driving shaft, a plurality of first plug-in units for plugging the fan blades are arranged at the bottom of the first fixing ring along the circumferential direction, and grooves are formed in the bottom shell wall of the first plug-in units.

Preferably, the fan blade comprises a connecting ring, a plurality of blades are arranged on the peripheral wall of the connecting ring along the circumferential direction, and a plurality of jacks for connection are formed on the connecting ring along the circumferential direction.

Preferably, the driving shaft is symmetrically provided with guide grooves, and the guide grooves are in sliding contact with the guide strips.

Preferably, the cavity is communicated with the guide groove through a hole, the top and the bottom of the hole are provided with sliding grooves, the sliding grooves are internally and slidably connected with sliding blocks, the spring telescopic rods are respectively and movably connected with the corresponding holes, and one sides, far away from the sliding grooves, of the sliding blocks are respectively and fixedly connected with the corresponding spring telescopic rods.

Preferably, the connecting seats are respectively arranged at the two ends of the stay bar through the locating pins, the connecting seats are fixedly connected to the movable disc below, and the connecting seats are arranged on the spring telescopic rod above.

Preferably, the bottom end of the screw rod passes through the bottom shell wall of the cavity and is provided with an adjusting handle.

Compared with the prior art, the utility model has the following beneficial technical effects:

1. the elastic supporting ring used in the prior art is replaced by the matching arrangement of the first fixing piece and the second fixing piece. And further under the condition of realizing the assembly of the fan blades, the anti-loosening effect of the fan blades is enhanced through the abutting of the first pair of fan blades and the second pair of fan blades and the insertion limiting between the first pair of fan blades and the second pair of fan blades.

2. Through the setting of joint subassembly, and then carry out further spacing fixedly to the mounting second of assembly to ensure the connection steadiness between its and the drive shaft, further strengthen the locking effect of taking off to the flabellum.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 shows a schematic perspective view of a second embodiment of the present utility model;

fig. 3 is a schematic view of the partial front cross-sectional structure of fig. 2.

Reference numerals: 1. a drive shaft; 2. a first fixing piece; 21. a first fixed ring; 22. a first plug-in unit; 3. a fan blade; 31. a connecting ring; 32. a blade; 4. a second fixing piece; 41. a second fixing ring; 42. a second plug-in unit; 43. a sleeve; 44. a guide bar; 45. an internally textured ring; 5. a clamping assembly; 51. a moving tray; 52. a screw; 53. a brace rod; 54. a spring telescopic rod.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Example 1

As shown in fig. 1-3, the utility model provides a driving shaft and fan blade anti-loosening structure of a fan motor, which comprises a driving shaft 1 and fan blades 3. The driving shaft 1 is provided with a first fixing piece 2 and a clamping assembly 5, and the clamping assembly 5 is positioned below the first fixing piece 2. A second fixing piece 4 for correspondingly fixing the fan blade 3 is arranged right below the first fixing piece 2.

The second fixing part 4 comprises a second fixing ring 41, a plurality of second inserts 42 for inserting the fan blades 3 are arranged at the top of the second fixing ring 41 along the circumferential direction, and a sleeve 43 is integrally arranged at the bottom of the second fixing ring 41. Guide strips 44 are symmetrically arranged on the inner wall of the sleeve 43, and an inner thread ring 45 is rotatably connected to the bottom of the sleeve 43.

The clamping assembly 5 comprises a cavity formed in the driving shaft 1, and a moving disc 51 is slidably connected in the cavity. A screw 52 is rotatably connected to the bottom end of the movable disk 51, and supporting rods 53 are symmetrically arranged at the top end of the movable disk 51. The top end of the stay bar 53 is movably connected with a spring telescopic rod 54 for clamping and limiting.

In this embodiment, the vertical section of the guide bar 44 has a wedge structure, and a limit groove is formed on the inner wall thereof.

The working principle of the anti-loosening structure of the driving shaft and the fan blades of the fan motor based on the first embodiment is as follows: when the fan blade 3 is assembled, the fan blade 3 is connected to the driving shaft 1, and one side of the fan blade 3 is contacted with the first fixing part 2. After the fan blade 3 is placed, the second fixing part 4 is connected to the driving shaft 1, the second fixing part 4 is contacted with the other side of the fan blade 3, and the second fixing part 4 is in threaded connection with the driving shaft 1 through the inner thread ring 45 in the second fixing part 4, so that the tight fixing of the second fixing part 4 to the fan blade 3 is realized. And the second fixing part 4 is used for carrying out clamping limiting between the second fixing part 4 and the clamping assembly 5 arranged on the driving shaft 1 when the abutting and fastening of the fan blade 3 is completed, so that the assembly limiting of the second fixing part 4 is further enhanced, and the anti-loosening effect of the fan blade 3 is ensured.

When the second fixing part 4 is connected with the driving shaft 1, the symmetrically arranged guide strips 44 in the second fixing part 4 are slidably connected in the guide grooves arranged on the driving shaft 1, and the inner thread ring 45 is rotated, so that the second fixing part 4 is displaced. After the guide strip 44 and the clamping assembly 5 are clamped and limited, the second fixing ring 41 in the second fixing piece 4 contacts the other side of the fan blade 3, so that the fan blade 3 is assembled.

When the fan blade 3 is disassembled, the screw rod 52 in the clamping assembly 5 is adjusted first, so that the movable disc 51 moves downwards, the supporting rod 53 drives the spring telescopic rod 54 to retract into the cavity, and further the clamping limit of the second fixing piece 4 is canceled. And then the inner ring 45 in the second fixing part 4 is adjusted, so that the second fixing part 4 moves downwards, and the fan blade 3 is conveniently taken out after the second fixing part is separated from the driving part 1.

Example two

As shown in fig. 2-3, based on the first embodiment, this embodiment further includes: the first fixing member 2 includes a first fixing ring 21 fixedly connected to the outer circumference of the driving shaft 1. The bottom of the first fixing ring 21 is provided with a plurality of first inserts 22 for inserting the fan blades 3 along the circumferential direction, and the bottom shell wall of the first inserts 22 is provided with grooves. The fan blade 3 includes a connection ring 31, a plurality of blades 32 are provided on the circumferential wall of the connection ring 31 along the circumferential direction, and a plurality of insertion holes for connection are provided on the connection ring 31 along the circumferential direction. The driving shaft 1 is symmetrically provided with guide grooves which are in sliding contact with the guide strips 44. The cavity is communicated with the guide groove through a hole, the top and the bottom of the hole are provided with sliding grooves, and sliding blocks are connected in the sliding grooves in a sliding manner. The plurality of spring telescopic rods 54 are respectively movably connected in the corresponding holes, and one sides of the plurality of sliding blocks, which are far away from the sliding grooves, are respectively fixedly connected to the corresponding spring telescopic rods 54.

In this embodiment, when the fan blade 3 is assembled, the first insert 22 of the first fixing member 2 is aligned with the first insert 22 of the second fixing member 2 when the connecting ring 31 of the fan blade 3 is connected to the driving shaft 1, so that the connecting ring 31 is not only close to the first fixing member 21, but also the first insert 22 is inserted into the first insert hole of the connecting ring 31.

In this embodiment, when the second fixing member 4 is assembled, the second fixing member 4 is aligned with the guide groove by the guide bar 44, and then the second insert 42 is inserted into the insertion hole when the second fixing ring 41 contacts the connection ring 31.

In this embodiment, the top of the second insert 42 is provided with a protruding rod, and the protruding rod is adapted to the groove on the first insert 22, so that when the second fixing element 4 is assembled, the second insert 42 is inserted into the insertion hole of the connection ring 31, and the protruding rod is inserted into the groove of the first insert 22, so as to limit the second insert.

Example III

As shown in fig. 3, based on the first or second embodiment, the present embodiment further includes: the two ends of the stay 53 are respectively provided with a connecting seat through a locating pin, and the lower connecting seat is fixedly connected to the movable disc 51. The upper connector is mounted on a spring telescoping rod 54, and the bottom end of the screw 52 passes through the bottom wall of the cavity and is provided with an adjustment handle.

In this embodiment, the spring telescopic rod 54 includes a sleeve, a pad is slidably connected in the sleeve, one side of the pad is provided with a moving rod, one end of the moving rod extends into the guide groove, and the other side of the pad is provided with a spring for restoring the spring.

In this embodiment, one end of the moving rod of the spring telescopic rod 54 in the clamping assembly 5 extending into the guiding groove is connected with a ball in a rolling manner, the ball is in rolling contact with the inclined surface of the guiding strip 44, and the clamping between the spring telescopic rod 54 and the limiting groove is limited, so that the second fixing part 4 is further fixed in position.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a drive shaft and flabellum locking structure that takes off of fan motor, includes drive shaft (1) and flabellum (3), its characterized in that: the fan comprises a driving shaft (1), a first fixing piece (2) and a clamping assembly (5) are arranged on the driving shaft (1), the clamping assembly (5) is located below the first fixing piece (2), and a second fixing piece (4) for correspondingly fixing fan blades (3) is arranged right below the first fixing piece (2);

the second fixing piece (4) comprises a second fixing ring (41), a plurality of second inserts (42) for inserting the fan blades (3) are arranged at the top of the second fixing ring (41) along the circumferential direction, sleeves (43) are integrally arranged at the bottom of the second fixing ring (41), guide strips (44) are symmetrically arranged on the inner wall of each sleeve (43), and an inner thread ring (45) is rotatably connected at the bottom of each sleeve (43);

the clamping assembly (5) comprises a cavity formed in the driving shaft (1), a moving disc (51) is slidably connected in the cavity, a screw (52) is rotatably connected to the bottom end of the moving disc (51), supporting rods (53) are symmetrically arranged at the top ends of the moving disc (51), and spring telescopic rods (54) used for limiting in a clamping mode are movably connected to the top ends of the supporting rods (53).

2. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 1, wherein: the first fixing piece (2) comprises a first fixing ring (21) fixedly connected to the outer ring of the driving shaft (1), a plurality of first inserts (22) for inserting the fan blades (3) are arranged at the bottom of the first fixing ring (21) along the circumferential direction, and grooves are formed in the bottom shell wall of the first inserts (22).

3. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 1, wherein: the fan blade (3) comprises a connecting ring (31), a plurality of blades (32) are arranged on the peripheral wall of the connecting ring (31) along the circumferential direction, and a plurality of jacks for connection are formed on the connecting ring (31) along the circumferential direction.

4. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 1, wherein: guide grooves are symmetrically formed in the driving shaft (1), and the guide grooves are in sliding contact with the guide strips (44).

5. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 4, wherein: the cavity and the guide groove are communicated through a hole, the top and the bottom of the hole are provided with sliding grooves, sliding blocks are connected in the sliding grooves in a sliding mode, the spring telescopic rods (54) are respectively and movably connected in the corresponding holes, and one sides, far away from the sliding grooves, of the sliding blocks are respectively and fixedly connected to the corresponding spring telescopic rods (54).

6. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 1, wherein: the two ends of the stay bar (53) are respectively provided with a connecting seat through a locating pin, the lower part of the stay bar is fixedly connected to the movable disc (51), and the upper part of the stay bar is arranged on the spring telescopic rod (54).

7. The fan motor drive shaft and fan blade anti-loosening structure as claimed in claim 1, wherein: the bottom end of the screw (52) passes through the bottom shell wall of the cavity and is provided with an adjusting handle.