Motor structure with stable and continuous driving and fan

Abstract

The invention relates to the technical field of fans, in particular to a stable and continuous driving motor structure which comprises a motor body, a supporting base is fixedly arranged at the lower end of the motor body, a supporting connecting hole is formed in the supporting base, and a bearing disc is further fixedly arranged on the motor body. The invention relates to a fan which comprises a fan body, a supporting assembly is arranged in the fan body, a mounting shaft is mounted on the supporting assembly, positioning insertion columns are fixedly arranged on the circumference of the bearing disc, a motor shaft is mounted on the motor body, and a connecting key is fixedly arranged on the motor shaft. The supporting assembly is further used for supporting the motor body, a motor auxiliary limiting mechanism and a motor supporting and fixing mechanism are arranged on the supporting assembly, the motor auxiliary limiting mechanism conducts auxiliary limiting on the motor, and meanwhile the motor auxiliary limiting mechanism drives the motor supporting mechanism to support and fix the motor body.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and particularly to a motor structure and a fan with stable and continuous driving. Background Art

[0002] The energy-saving fan realizes the effective utilization of energy by adopting a high-efficiency motor and aerodynamic design, optimizing the shape and angle of the fan blades, and reducing the air flow resistance. Compared with the traditional fan, the energy-saving fan has a higher energy efficiency ratio and lower operating cost. Its motor is fixed inside the fan by means of bolts to ensure that the motor can drive the fan blades continuously and stably. Although this traditional fixing method of bolts can ensure the stability of the motor installation, it is rather troublesome to install and disassemble the motor. On the one hand, it is necessary to operate multiple bolts one by one. On the other hand, when operating the bolts inside the fan, the operation is hindered by the limited operation space, and the convenient installation and disassembly of the motor cannot be achieved. When the motor fails during subsequent use and needs to be repaired or replaced, it often takes a lot of time and energy for the staff to install and disassemble the motor. Summary of the Invention

[0003] The purpose of the present invention is to provide a motor structure and a fan with stable and continuous driving to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A motor structure with stable and continuous driving, including a motor body, a support base is fixedly arranged at the lower end of the motor body, and support connection holes are formed on the support base;

[0006] A bearing plate is also fixedly arranged on the motor body, positioning insertion posts are fixedly arranged on the bearing plate in a circumferential manner, and a motor shaft is installed on the motor body, and a connection key is fixedly arranged on the motor shaft.

[0007] A fan, including a fan body, a support assembly is arranged inside the fan body, a mounting shaft is installed on the support assembly, and the support assembly is also used for supporting the motor body;

[0008] A motor auxiliary limiting mechanism and a motor support fixing mechanism are arranged on the support assembly. The motor auxiliary limiting mechanism performs auxiliary limiting on the motor, and at the same time, the motor auxiliary limiting mechanism drives the motor support mechanism to support and fix the motor body;

[0009] A self-locking mechanism is also arranged on the support assembly. The self-locking mechanism locks the motor auxiliary limiting mechanism and limits the motor support fixing mechanism at the same time.

[0010] Preferably, the support assembly is an inner support plate frame, the inner support plate frame is provided with a mounting through hole, and a load-bearing matching rod is fixedly provided on the inner support plate frame;

[0011] A matching bearing ring is fixedly arranged on the bearing matching rod, a connecting carrier plate is fixedly arranged on the circumference of the matching bearing ring, and the connecting carrier plate is fixedly connected to the bearing matching rod;

[0012] A positioning through hole is also circumferentially provided on the matching bearing ring. When the motor body is installed in the fan body, the positioning plug posts are inserted into the positioning through holes to support and position the motor body.

[0013] Preferably, a bearing bottom plate is fixedly arranged on the connecting carrier plate at the lower side of the matching bearing ring, side convex bearing blocks are symmetrically fixedly arranged on both sides of the bearing bottom plate, and supporting guide rods are fixedly arranged on the side convex bearing blocks;

[0014] An installation groove is provided on one end of the load-bearing bottom plate away from the connection carrier plate, and rotation plug holes are symmetrically provided on both sides of the installation groove;

[0015] Lower bearing blocks are symmetrically and fixedly arranged at the lower ends of both sides of the bearing bottom plate. A movable through hole is opened on the lower bearing block, and a limited position matching rod is fixedly arranged on the lower bearing block.

[0016] Preferably, the motor auxiliary limiting mechanism is a limiting baffle, and the limiting baffle is installed in the installation groove;

[0017] Rotating shafts are symmetrically fixedly arranged on both sides of the limit baffle, the rotating shafts are plugged into the rotating plug holes, and a push-down rotating plate is fixedly arranged on the rotating shafts, and a stable plug hole is opened on the push-down rotating plate.

[0018] Preferably, the motor support and fixing mechanism comprises a connecting block, a matching bearing bar and a supporting movable plate, and the connecting block is mounted on the supporting guide rod;

[0019] A movable through hole is provided on the connecting block, the movable through hole matches with the supporting guide rod, and driving connecting rods are symmetrically hinged at the upper and lower ends of the connecting block.

[0020] Preferably, the other end of the driving connecting rod at the lower end of the connecting block is connected to a matching bearing bar, and a connecting protrusion frame is fixedly provided on the matching bearing bar, and the connecting protrusion frame is hinged to the driving connecting rod at the lower end of the connecting block;

[0021] A matching limit hole is provided on the matching bearing bar, a matching limit rod is inserted in the matching limit hole, and a push-up strip plate is fixedly provided on one end of the matching bearing bar away from the connecting block.

[0022] Preferably, the other end of the driving connecting rod at the upper end of the connecting block is connected with a supporting movable plate, and a fixed insertion post is fixedly arranged at the upper end of the supporting movable plate;

[0023] On both sides of the supporting movable plate, side connecting plate frames are symmetrically and fixedly arranged. The side connecting plate frames are hinged to the other end of the driving connecting rod at the upper end of the connecting block, and movable limiting holes are formed in the side connecting plate frames. A limiting matching rod is inserted in the movable limiting holes.

[0024] Preferably, the self-locking mechanism is a movable bearing strip. The movable bearing strip is installed on the bearing bottom plate. At both ends of the movable bearing strip, bearing vertical plates are symmetrically and fixedly arranged, and locking insertion posts are fixedly arranged on the bearing vertical plates;

[0025] On the movable bearing strip below the locking insertion post, an inclined surface convex block is fixedly arranged;

[0026] The push rod plate on the matching bearing strip is in contact with the bearing vertical plate, and before the matching bearing strip moves down, it is located above the inclined surface convex block;

[0027] At both ends of the movable bearing strip, matching movable rods are also symmetrically and fixedly arranged. The matching movable rods are inserted in the movable through holes, and connecting springs are sleeved on the matching movable rods.

[0028] Preferably, a matching shaft hole is formed in the installation shaft, and a matching key groove is arranged in the matching shaft hole;

[0029] When the motor body is installed inside the fan body, the motor shaft is inserted into the matching shaft hole, and the connecting key is inserted into the matching key groove;

[0030] A bearing is sleeved on the installation shaft. The bearing is installed in the installation through hole, and a fan blade is fixedly arranged on the installation shaft.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is reasonably arranged and has strong functionality, and has the following advantages:

[0032] 1. A matching bearing ring is arranged inside the fan body. A positioning through hole is formed in the matching bearing ring. A positioning insertion post is arranged on the motor body. The positioning of the motor body is realized through the cooperation of the positioning insertion post and the positioning through hole. Rotating the limit baffle can complete the fixed installation of the motor body, and the operation is simple, convenient and fast.

[0033] 2. When rotating the limit baffle, under the action of the downward pushing rotating plate, the matching bearing strip will be pushed downward. Under the action of the matching bearing strip, the connecting block will be driven to move. Further, under the action of the connecting block, the supporting movable plate will be driven to move upward, so that the supporting movable plate supports below the motor body to assist in supporting it. At the same time, the fixed insertion post is inserted into the supporting connection hole to fix the motor body.

[0034] 3. Additionally, when the limit baffle rotates to the vertical position, it contacts the rear end face of the motor body, which can limit and fix the motor body, further ensuring the firmness of its installation. When the supporting bar moves downward, it will push the movable supporting bar to move until the supporting bar passes over the inclined surface bump. The movable supporting bar is reset under the action of the connecting spring, and then the locking plug is inserted into the stable jack to fix the limit baffle, ensuring the stability of its limitation on the motor body. At the same time, the inclined surface bump will be stuck on the upper side of the supporting bar to limit it. Even if the lower push rotating plate fails to limit it, it will not be able to move upward under the action of the inclined surface bump, ensuring the stable installation of the motor body. Description of the Drawings

[0035] Figure 1 It is an assembly schematic diagram of the motor body and the fan body.

[0036] Figure 2 It is a first - perspective schematic diagram of the internal assembly of the fan body.

[0037] Figure 3 For Figure 1 The enlarged schematic diagram at position A in

[0038] Figure 4 It is a second - perspective schematic diagram of the internal assembly of the fan body.

[0039] Figure 5 For Figure 4 The enlarged schematic diagram at position B in

[0040] Figure 6 It is a first - perspective structural schematic diagram of the internal part of the fan body.

[0041] Figure 7 For Figure 6 The enlarged schematic diagram at position C in

[0042] Figure 8 It is a second - perspective structural schematic diagram of the internal part of the fan body.

[0043] Figure 9 It is a structural schematic diagram of the motor body.

[0044] Figure 10 It is a structural schematic diagram of the installation shaft.

[0045] Figure 11 It is a cooperation schematic diagram of the supporting bar and the movable supporting bar.

[0046] In the figure: 1. Motor body; 11. Support base; 12. Support connection hole; 13. Bearing plate; 14. Positioning plug post; 15. Motor shaft; 16. Connection key; 2. Fan body; 21. Inner support plate frame; 22. Installation through hole; 23. Bearing cooperation rod; 24. Cooperation bearing ring; 25. Connection carrier plate; 26. Positioning through hole; 27. Bearing bottom plate; 271. Side convex carrier block; 272. Support guide rod; 273. Installation groove; 274. Rotating insertion hole; 28. Lower bearing block; 281. Movable through hole; 282. Limit cooperation rod; 3. Limit baffle; 31. Rotating shaft; 32. Lower push rotating plate; 33. Stable insertion hole; 4. Connection link block; 41. Moving through hole; 42. Driving connection rod; 5. Cooperation bearing strip; 51. Connection convex frame; 52. Cooperation limit hole; 53. Push top strip plate; 6. Support movable plate; 61. Fixed plug post; 62. Side connection plate frame; 63. Movable limit hole; 7. Movable bearing strip; 71. Bearing vertical plate; 72. Locking plug post; 73. Inclined surface convex block; 74. Cooperation movable rod; 75. Connection spring; 8. Installation shaft; 81. Cooperation shaft hole; 82. Cooperation key groove; 83. Bearing; 84. Fan blade. Detailed implementation mode

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] The present invention provides a technical solution:

[0049] As Figure 9 shown, a motor structure with stable and continuous driving includes a motor body 1. A support base 11 is fixedly arranged at the lower end of the motor body 1. A support connection hole 12 is formed on the support base 11. A bearing plate 13 is also fixedly arranged on the motor body 1. Positioning plug posts 14 are fixedly arranged on the bearing plate 13 in a circumferential manner. And a motor shaft 15 is installed on the motor body 1. A connection key 16 is fixedly arranged on the motor shaft 15.

[0050] As Figure 1 and Figure 2As shown, a fan includes a fan body 2. A support assembly is arranged inside the fan body 2. An installation shaft 8 is installed on the support assembly, and the support assembly is also used for supporting the motor body 1. A motor auxiliary limit mechanism and a motor support and fixation mechanism are arranged on the support assembly. The motor auxiliary limit mechanism performs auxiliary limit on the motor, and at the same time, the motor auxiliary limit mechanism drives the motor support mechanism to support and fix the motor body 1. A self-locking mechanism is also arranged on the support assembly. The self-locking mechanism locks the motor auxiliary limit mechanism and at the same time limits the motor support and fixation mechanism.

[0051] As Figure 1 , Figure 6 , Figure 7 and Figure 8 shown, the support assembly is an inner bearing plate frame 21. An installation through hole 22 is formed on the inner bearing plate frame 21, and a bearing cooperation rod 23 is fixedly arranged on the inner bearing plate frame 21. A cooperation bearing ring 24 is fixedly arranged on the bearing cooperation rod 23. A connecting carrier plate 25 is fixedly arranged circumferentially on the cooperation bearing ring 24. The connecting carrier plate 25 is fixedly connected to the bearing cooperation rod 23. A positioning through hole 26 is also circumferentially formed on the cooperation bearing ring 24. When the motor body 1 is installed in the fan body 2, a positioning plug post 14 is inserted into the positioning through hole 26 to support and position the motor body 1.

[0052] As Figure 8 shown, a bearing bottom plate 27 is fixedly arranged on the connecting carrier plate 25 on the lower side of the cooperation bearing ring 24. Side convex carrier blocks 271 are symmetrically and fixedly arranged on both sides of the bearing bottom plate 27. A support guide rod 272 is fixedly arranged on the side convex carrier block 271. An installation groove 273 is formed at one end of the bearing bottom plate 27 away from the connecting carrier plate 25. Rotation insertion holes 274 are symmetrically formed on both sides of the installation groove 273. Lower carrier blocks 28 are symmetrically and fixedly arranged at the lower ends of both sides of the bearing bottom plate 27. A movable through hole 281 is formed on the lower carrier block 28, and a limit cooperation rod 282 is fixedly arranged on the lower carrier block 28.

[0053] As Figure 1 , Figure 3 and Figure 4 shown, the motor auxiliary limit mechanism is a limit baffle 3. The limit baffle 3 is installed in the installation groove 273. Rotation shafts 31 are symmetrically and fixedly arranged on both sides of the limit baffle 3. The rotation shafts 31 are inserted into the rotation insertion holes 274, and a downward push rotation plate 32 is fixedly arranged on the rotation shaft 31. A stable insertion hole 33 is formed on the downward push rotation plate 32. In addition, when the limit baffle 3 does not play a role in limiting the motor body 1, it is in a horizontal state. At this time, the lower end surface of the limit baffle 3 is in contact with the inner bottom surface of the installation groove 273, and at this time, the downward push rotation plate 32 is also in a horizontal state.

[0054] As Figure 4 and Figure 5As shown, the motor support and fixing mechanism includes an articulated connecting block 4, a cooperating load-bearing bar 5, and a support movable plate 6. The articulated connecting block 4 is installed on the support guide rod 272. A moving through hole 41 is formed in the articulated connecting block 4. The moving through hole 41 cooperates with the support guide rod 272. Driving connecting rods 42 are symmetrically hinged at the upper and lower ends of the articulated connecting block 4. In addition, when the articulated connecting block 4 does not move away from the side convex load block 271, the articulated connecting block 4 is in contact with the side convex load block 271.

[0055] As Figure 4 and Figure 5 shown, the other end of the driving connecting rod 42 at the lower end of the articulated connecting block 4 is connected to a cooperating load-bearing bar 5. A connecting convex bracket 51 is fixedly arranged on the cooperating load-bearing bar 5. The connecting convex bracket 51 is hinged to the driving connecting rod 42 at the lower end of the articulated connecting block 4. A cooperating limit hole 52 is formed in the cooperating load-bearing bar 5. A limit cooperating rod 282 is inserted into the cooperating limit hole 52. And a pushing strip plate 53 is fixedly arranged at one end of the cooperating load-bearing bar 5 away from the articulated connecting block 4.

[0056] As Figure 4 and Figure 5 shown, the other end of the driving connecting rod 42 at the upper end of the articulated connecting block 4 is connected to a support movable plate 6. A fixed insertion post 61 is fixedly arranged at the upper end of the support movable plate 6. Side connecting plate frames 62 are symmetrically and fixedly arranged on both sides of the support movable plate 6. The side connecting plate frames 62 are hinged to the other end of the driving connecting rod 42 at the upper end of the articulated connecting block 4. And a movable limit hole 63 is formed in the side connecting plate frame 62. A limit cooperating rod 282 is inserted into the movable limit hole 63.

[0057] In addition, when the support movable plate 6 supports the motor body 1, it is in contact with the lower end surface of the support base 11. When the fixed insertion post 61 fixes the motor body 1, it is inserted into the support connecting hole 12.

[0058] As Figure 3 and Figure 11 shown, the self-locking mechanism is a movable load-bearing bar 7. The movable load-bearing bar 7 is installed on the load-bearing bottom plate 27. Load-bearing vertical plates 71 are symmetrically and fixedly arranged at both ends of the movable load-bearing bar 7. A locking insertion post 72 is fixedly arranged on the load-bearing vertical plate 71. An inclined surface convex block 73 is fixedly arranged on the movable load-bearing bar 7 below the locking insertion post 72. And the surface of the inclined surface convex block 73 is smooth and free of burrs. When the locking insertion post 72 fixes the limit baffle 3, it is inserted into the stable insertion hole 33.

[0059] The pushing strip plate 53 on the cooperating load-bearing bar 5 is in contact with the load-bearing vertical plate 71. And before the cooperating load-bearing bar 5 moves downward, it is located above the inclined surface convex block 73. When the cooperating load-bearing bar 5 moves downward, the pushing strip plate 53 on the cooperating load-bearing bar 5 will cross over the inclined surface convex block 73, and finally the inclined surface convex block 73 presses on the pushing strip plate 53.

[0060] As Figure 3 and Figure 11 shown, both ends of the movable bearing bar 7 are symmetrically and fixedly provided with cooperating movable rods 74. The cooperating movable rods 74 are inserted into the movable through holes 281, and a connecting spring 75 is sleeved on the cooperating movable rods 74. The two ends of the connecting spring 75 are respectively fixed on the upper and lower bearing blocks 28 of the movable bearing bar 7.

[0061] As Figure 2 and Figure 10 shown, a cooperating shaft hole 81 is formed in the mounting shaft 8, and a cooperating key groove 82 is provided in the cooperating shaft hole 81. When the motor body 1 is installed inside the fan body 2, the motor shaft 15 is inserted into the cooperating shaft hole 81, and the connecting key 16 is inserted into the cooperating key groove 82. A bearing 83 is sleeved on the mounting shaft 8. The bearing 83 is installed in the mounting through hole 22, and a fan blade 84 is fixedly provided on the mounting shaft 8.

[0062] When installing the motor body 1, insert the positioning stud 14 on the motor body 1 into the positioning through hole 26 so that the bearing plate 13 on the motor body 1 contacts the mating bearing ring 24. At the same time, adjust the mounting shaft 8 so that the motor shaft 15 is inserted into the mating shaft hole 81 on the mounting shaft 8, enabling the mating key groove 82 to cooperate with the connecting key 16. In this way, the mounting shaft 8 can be driven to rotate under the drive of the motor body 1. After the motor body 1 is positioned, rotate the limit baffle 3 upward at this time until it rotates to the vertical state and contacts the rear end face of the motor body 1. In this way, the motor body 1 can be limited and fixed under the action of the limit baffle 3. In addition, during the rotation of the limit baffle 3, it will drive the downward push rotating plate 32 to rotate downward. As the downward push rotating plate 32 rotates, it will push the mating bearing strip 5 downward. As the mating bearing strip 5 moves downward, under the action of the driving connecting rod 42 on the lower side of the connecting block 4, the connecting block 4 will be driven to move away from the side convex load block 271. As the connecting block 4 moves, under the action of the driving connecting rod 42 at the upper end of the connecting block 4, the supporting movable plate 6 will be driven to move upward, so that the supporting movable plate 6 contacts the supporting base 11 at the lower end of the motor body 1, playing a supporting role for the motor body 1. At the same time, as the supporting movable plate 6 moves upward, it will also drive the fixed stud 61 upward, so that the fixed stud 61 is inserted into the supporting connecting hole 12 on the supporting base 11. Thus, the motor body 1 can be fixed under the action of the fixed stud 61. Under the combined action of the limit baffle 3 and the supporting movable plate 6, the firmness and stability of the installation of the motor body 1 can be fully ensured. Moreover, when the mating bearing strip 5 moves downward, the pushing strip plate 53 on the mating bearing strip 5 will contact the inclined surface convex block 73. In this way, under the cooperation of the pushing strip plate 53 and the inclined surface convex block 73, the movable bearing strip 7 will be pushed to move away from the bearing bottom plate 27 until the limit baffle 3 rotates to the vertical state. At this time, the pushing strip plate 53 moves to the lowest position, and at this time the pushing strip plate 53 crosses the inclined surface convex block 73. In this way, under the action of the connecting spring 75, the movable bearing strip 7 will be driven to move in the reverse direction to reset. At this time, the locking stud 72 is aligned with the stable jack 33 on the downward push rotating plate 32. As the movable bearing strip 7 resets, the locking stud 72 will be inserted into the stable jack 33 on the downward push rotating plate 32. Thus, the limit baffle 3 can be fixed under the action of the locking stud 72, without the need to perform the fixing operation of the limit baffle 3, which is very convenient. In addition, as the movable bearing strip 7 resets, the inclined surface convex block 73 will press on the pushing strip plate 53. In this way, the inclined surface convex block 73 can play a role in limiting the mating bearing strip 5. In this way, when the downward push rotating plate 32 fails and cannot limit the mating bearing strip 5, under the action of the inclined surface convex block 73, it can also ensure that the mating bearing strip 5 cannot move upward, and thus the firmness of the installation of the motor body 1 can also be ensured.The entire installation process is very convenient and fast. When the motor body 1 needs to be disassembled, just pull the movable bearing bar 7 so that the locking plug 72 exits the stable jack 33, and the limit baffle 3 can be unlocked. At this time, the limit baffle 3 can be rotated in the reverse direction to unlock the motor body 1. That is, when the limit baffle 3 is rotated, the cooperation with the bearing bar 5 will lose its restriction. Under the action of its own gravity, the support movable plate 6 will move downward, and then push the connecting link 4 to move in the reverse direction, so that it resets to contact with the side convex load block 271. In this way, under the action of the connecting link 4, the cooperation bearing bar 5 will be driven to move upward for reset, preparing for the next installation work.

[0063] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor structure with stable and continuous driving, comprising a motor body, characterized in that: A support base is fixedly provided at the lower end of the motor body, and a support connection hole is opened on the support base; A bearing plate is also fixedly arranged on the motor body, and positioning pins are fixedly arranged on the circumference of the bearing plate. A motor shaft is installed on the motor body, and a connecting key is fixedly arranged on the motor shaft.

2. A fan, characterized in that: The fan is internally installed with the motor structure according to any one of claims 1 to 9, comprising a fan body, wherein a support assembly is arranged inside the fan body, a mounting shaft is mounted on the support assembly, and the support assembly is also used to support the motor body; The support assembly is provided with a motor auxiliary limiting mechanism and a motor support fixing mechanism, wherein the motor auxiliary limiting mechanism performs auxiliary limiting on the motor, and at the same time, the motor auxiliary limiting mechanism drives the motor support mechanism to support and fix the motor body; The support assembly is also provided with a self-locking mechanism, which locks the motor auxiliary limiting mechanism and limits the motor support fixing mechanism at the same time.

3. A blower according to claim 2, characterized in that: The support assembly is an inner support plate frame, the inner support plate frame is provided with a mounting through hole, and a load-bearing matching rod is fixedly arranged on the inner support plate frame; A matching bearing ring is fixedly arranged on the bearing matching rod, a connecting carrier plate is fixedly arranged on the circumference of the matching bearing ring, and the connecting carrier plate is fixedly connected to the bearing matching rod; A positioning through hole is also circumferentially provided on the matching bearing ring. When the motor body is installed in the fan body, the positioning plug posts are inserted into the positioning through holes to support and position the motor body.

4. A fan according to claim 3, characterized in that: A bearing bottom plate is fixedly arranged on the connecting carrier plate at the lower side of the matching bearing ring, side convex bearing blocks are symmetrically fixedly arranged on both sides of the bearing bottom plate, and supporting guide rods are fixedly arranged on the side convex bearing blocks; An installation groove is provided on one end of the load-bearing bottom plate away from the connection carrier plate, and rotation plug holes are symmetrically provided on both sides of the installation groove; Lower bearing blocks are symmetrically and fixedly arranged at the lower ends of both sides of the bearing bottom plate. A movable through hole is opened on the lower bearing block, and a limited position matching rod is fixedly arranged on the lower bearing block.

5. A fan according to claim 4, characterized in that: The motor auxiliary limiting mechanism is a limiting baffle, and the limiting baffle is installed in the installation groove; Rotating shafts are symmetrically fixedly arranged on both sides of the limit baffle, the rotating shafts are plugged into the rotating plug holes, and a push-down rotating plate is fixedly arranged on the rotating shafts, and a stable plug hole is opened on the push-down rotating plate.

6. The fan according to claim 5, wherein: The motor support and fixing mechanism comprises a connecting block, a matching bearing bar and a supporting movable plate, and the connecting block is installed on the supporting guide rod; A movable through hole is provided on the connecting block, the movable through hole matches with the supporting guide rod, and driving connecting rods are symmetrically hinged at the upper and lower ends of the connecting block.

7. A blower according to claim 6, characterized in that: The other end of the driving connecting rod at the lower end of the connecting block is connected to a matching bearing bar, and a connecting protrusion frame is fixedly provided on the matching bearing bar, and the connecting protrusion frame is hinged to the driving connecting rod at the lower end of the connecting block; A matching limit hole is provided on the matching bearing bar, a matching limit rod is inserted in the matching limit hole, and a push-up strip plate is fixedly provided on one end of the matching bearing bar away from the connecting block.

8. A fan according to claim 7, characterized in that: The other end of the driving connecting rod at the upper end of the connecting block is connected to a supporting movable plate, and a fixed plug column is fixedly arranged at the upper end of the supporting movable plate; On both sides of the supporting movable plate, side connecting plate frames are symmetrically and fixedly arranged. The side connecting plate frames are hinged to the other ends of the driving connecting rods at the upper ends of the connecting blocks. An activity limiting hole is formed in the side connecting plate frame, and a limiting matching rod is inserted into the activity limiting hole.

9. The fan according to claim 8, wherein: The self-locking mechanism is an activity bearing bar. The activity bearing bar is installed on the bearing bottom plate. At both ends of the activity bearing bar, bearing vertical plates are symmetrically and fixedly arranged. A locking plug post is fixedly arranged on the bearing vertical plate. An inclined surface convex block is fixedly arranged on the activity bearing bar below the locking plug post. The push rod plate on the matching bearing bar contacts the bearing vertical plate and is located above the inclined surface convex block before the matching bearing bar moves downward. At both ends of the activity bearing bar, matching activity rods are also symmetrically and fixedly arranged. The matching activity rods are inserted into the activity through holes, and connecting springs are sleeved on the matching activity rods.

10. A fan according to claim 9, characterized in that: A matching shaft hole is formed in the installation shaft, and a matching key groove is arranged in the matching shaft hole. When the motor body is installed inside the fan body, the motor shaft is inserted into the matching shaft hole, and the connecting key is inserted into the matching key groove. A bearing is sleeved on the installation shaft. The bearing is installed in the installation through hole, and a fan blade is fixedly arranged on the installation shaft.

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