CN219317272U

CN219317272U - Axial flow fan

Info

Publication number: CN219317272U
Application number: CN202320308862.5U
Authority: CN
Inventors: 付开剑
Original assignee: Zhejiang Dada Explosion Proof Fan Co ltd
Current assignee: Zhejiang Dada Explosion Proof Fan Co ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-07-07
Anticipated expiration: 2033-02-13

Abstract

The utility model discloses an axial flow fan, which is characterized by comprising a pair of brackets, wherein a fan main body is rotatably arranged between the brackets; the two sides of the fan main body are provided with rotating shafts, and the bracket is provided with connecting holes which are rotationally connected with the rotating shafts; a locking mechanism is arranged between the rotating shaft at one side and the connecting hole; the locking mechanism comprises a mounting block arranged on the bracket, a locking piece is arranged on the mounting block in a sliding manner, and a chuck which is clamped with the locking piece is fixed on a rotating shaft at one side; when the locking piece is far away from the chuck, the rotating shaft can rotate; the clamping connection of the chuck and the locking piece can ensure that vibration generated by the fan main body during working does not cause looseness between the fan main body and the bracket, and the angle stability of the fan main body is ensured; meanwhile, the fan main body is locked and unlocked through the control locking piece, so that the fan angle adjustment is more convenient and quick for a worker.

Description

Axial flow fan

Technical Field

The utility model relates to the technical field of fans, in particular to an axial flow fan.

Background

The axial flow fan is the most commonly used ventilation and air supply equipment in the market, and because the air flows parallel to the axial flow of the fan when in use, namely the air flow in the same direction as the axis of the fan blade, the axial flow fan is called an 'axial flow', such as an electric fan, and the fan of the air conditioner external unit is an axial flow mode to operate the fan. The axial flow fan has the characteristics of simple structure, obvious ventilation effect, safety, stability, reliability and the like, and is generally used in occasions with higher flow requirements and lower pressure requirements, such as in places like industrial production workshops, civil buildings and the like for ventilation or enhanced heat dissipation.

Patent No. (CN 217713018U) discloses an axial flow fan, which can realize the adjustment and locking of the fan angle by arranging an adjusting groove and an adjusting bolt on a connecting plate and arranging an adjusting hole on a mounting block of the fan; when the angle of the fan needs to be adjusted, the fan can be rotated by loosening the adjusting bolt to loosen the mounting block and the connecting plate; when the adjustment angle is required to be locked, the adjusting bolt is screwed into the adjusting hole and is screwed tightly; the fan can be supported through the fixing bolts, and meanwhile, the adjusting bolts are more convenient to screw;

however, in the above patent, there are the following problems:

1. the rotation of the fan is limited mainly by virtue of friction force between the connecting plate and the mounting block after the two bolts are screwed, so that after the fan is used for a long time, the adjusting bolts and the fixing bolts are easy to wear to cause looseness, the clamping between the connecting plate and the mounting block cannot be ensured, the fan is easy to deflect due to vibration in the use process, and the use of the fan is influenced;

2. the bolts are arranged on two sides of the fan, and when the fan angle is required to be adjusted, fixed and unlocked, workers are required to rotate the bolts on two sides, and adjustment and fixation are troublesome.

Therefore, there is a need for an axial flow fan that can be easily adjusted and that stabilizes the fan angle lock.

Disclosure of Invention

In order to solve the problems, the utility model provides the axial flow fan, which can conveniently adjust and lock the angle of the fan and ensure the stability and firmness of the fan in the locking process.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an axial flow fan comprises a pair of brackets, wherein a fan main body is rotatably arranged between the brackets; the fan is characterized in that rotating shafts are arranged on two sides of the fan main body, and connecting holes which are rotationally connected with the rotating shafts are formed in the bracket; a locking mechanism is arranged between the rotating shaft and the connecting hole on one side; the locking mechanism comprises a mounting block arranged on the bracket, a sliding groove is arranged in the mounting block, and one end of the rotating shaft is rotationally connected with the sliding groove and is provided with a chuck; the locking piece is matched with the chuck in a clamping way; the rotatable shaft is rotatable when the locking member is away from the chuck.

The utility model is further arranged that the locking piece comprises a connecting cylinder which is arranged in the sliding groove in a sliding way, a plurality of locking rods are distributed on one end face of the connecting cylinder, and the locking rods are in clamping fit with the chuck.

The chuck is further provided with a fixed plate which is rotationally connected with the mounting block and fixedly connected with the rotating shaft, wherein a locking block is arranged on the periphery of the fixed plate, and a locking groove which is clamped with the locking rod is formed between every two adjacent locking blocks.

The utility model is further arranged that the bottom of the fan main body is provided with the balancing weight.

The utility model is further provided that one end of the locking rod is elastically hinged with a deflector rod, and the deflector rod can swing upwards when the chuck rotates; the shifting lever comprises a front shifting lever and a rear shifting lever, guiding surfaces with opposite inclination directions are arranged below the front shifting lever and the rear shifting lever, and the guiding surfaces are abutted against the locking blocks.

The fan is further provided with a locking plate, one end of the connecting cylinder, which is far away from the fan main body, is rotatably provided with a limiting block matched with the locking plate, and the locking plate is provided with two locking plates which are respectively arranged corresponding to the positions of the front deflector rod and the rear deflector rod.

The utility model is further provided with a reset spring arranged between the connecting cylinder and the sliding groove.

In summary, the utility model has the following beneficial effects:

compared with the prior art, the fan main body and the support are rotatably connected through the rotating shafts arranged on the two sides of the fan main body, wherein the locking mechanism is arranged between the rotating shaft on one side and the support, so that the rotation of the fan main body can be controlled, and the angle of the fan main body can be adjusted; the locking mechanism is only arranged on one side of the fan main body, so that a worker can adjust the angle of the fan main body on one side, and efficiency is improved and convenience is brought.

Meanwhile, the rotation shaft and the locking mechanism are clamped with each other by the chuck and the locking rod to limit the rotation of the fan main body, so that the fan main body rotates due to looseness between the rotation shaft and the bracket caused by vibration generated during the operation of the fan main body can be avoided, and the stability of the fan main body in a locking state is ensured.

Drawings

Fig. 1 is a perspective structural view of an embodiment.

Fig. 2 is a front cross-sectional view of an embodiment.

Fig. 3 is a partial enlarged view of fig. 2.

Fig. 4 is a schematic structural view of the locking mechanism of the embodiment.

Fig. 5 is an internal structural view of the embodiment lock mechanism.

Fig. 6 is a rear view of the embodiment locking mechanism.

Reference numerals: 1-a bracket; 2-a fan body; 3-rotating shaft; 4-connecting holes; 5-locking mechanism; 51-mounting blocks; 52-locking member; 521-connecting the cylinders; 522-a locking lever; 524—a toggle; 53-chuck; 531-fixing plate; 532-locking block; 6-front deflector rod; 7-a rear deflector rod; 8-guiding surfaces; 9-a return spring; 10-locking plate; 11-limiting blocks; 12-sliding grooves.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 6, the present embodiment discloses an axial flow fan, which includes a pair of brackets 1, between which a fan main body 2 is rotatably provided; as shown in fig. 1, the fan main body 2 includes a housing and a driving motor disposed in the housing, and an output end of the driving motor is connected with a fan blade.

As shown in fig. 2-3, two sides of the fan main body 2 are provided with rotating shafts 3, and the bracket 1 is provided with connecting holes 4 rotationally connected with the rotating shafts 3; a locking mechanism 5 is arranged between the rotating shaft 3 and the connecting hole 4 on one side; the locking mechanism 5 comprises a mounting block 51 arranged on the bracket 1, a sliding groove 12 is arranged in the mounting block 51, and a locking piece 52 is arranged in the sliding groove 12 in a sliding manner; the locking member 52 includes a coupling cylinder 521 slidably disposed in the

slide groove

12, and 5 locking bars 522 are provided on a circumferential side of a surface of the coupling cylinder 521 facing the chuck 53.

Meanwhile, a chuck 53 which is clamped with the locking rod 522 is fixed on one side of the rotating shaft 3; the chuck 53 comprises a fixed plate 531 rotatably connected with the mounting block 51 and fixedly connected with the rotating shaft 3, a locking block 532 is arranged on the periphery of the fixed plate 531, and a locking groove matched with the locking rod 522 in a locking manner is formed between adjacent locking blocks 532; when the locking piece 52 is separated from the locking groove on the chuck 53, the rotating shaft 3 can rotate, so that a worker can control the angle of the fan main body 2 on the bracket 1, the angle can be adjusted, and the blowing wind direction can be changed.

Working principle: as shown in fig. 3, when a worker needs to adjust the angle of the fan main body 2, the connecting cylinder 521 can be pulled outwards by a handle arranged on the outer side of the connecting cylinder 521, and at this time, the locking rod 522 on the inner side of the connecting cylinder 521 is driven by the connecting cylinder 521 to move outwards, so that the locking rod 522 is separated from the locking groove on the chuck 53, and further, the locking between the rotating shaft 3 and the mounting block 51 is released, thereby realizing the rotation adjustment of the fan main body 2; when the angle of the fan main body 2 is adjusted to a required position, the worker releases the connecting cylinder 521, and at this time, the connecting cylinder 521 moves inwards under the action of the return spring 9, so that the locking rod 522 is locked in the locking groove, and locking of the fan main body 2 is realized.

In the process, the staff is always on one side of the fan, and can lock the fan main body 2 only by controlling the connecting cylinder, so that the adjustment is more convenient; simultaneously through the locking groove on locking pole 522 and the chuck for the locking between fan main part 2 and the support 1 is more firm stable, has avoided the vibrations that the fan work produced to lead to the connection between fan main part 2 and the support 1 not hard up.

Example 2:

meanwhile, the existing fan main body 2 has a certain weight due to the fact that the driving motor inside the fan main body 2 is provided with a certain weight, when the fan main body 2 is in a free rotation state, the gravity of the driving motor can enable the fan main body 2 to rotate backwards, when the fan main body 2 swings backwards, workers need to hold the fan main body 2 with both hands, the fan main body 2 is prevented from swinging backwards under the action of gravity, after the fan is swung forwards, the fan main body needs to be held with one hand, the fan main body angle can be locked after the fan main body is ensured to be stable, and adjustment is troublesome.

Therefore, as shown in fig. 1-2, the balancing weight is arranged at the bottom of the shell of the fan main body 2, and can offset the backward rotation force of the driving motor, so that the gravity center of the fan main body 2 is always located under the fan main body.

As shown in fig. 3-5, one end of the locking rod 522, facing the chuck 53, is elastically hinged with a shift lever 524, the shift lever 524 includes a front shift lever 6 and a rear shift lever 7, the front shift lever 6 and the rear shift lever 7 are integrally arranged, a guiding surface 8 with opposite inclination directions is arranged below the front shift lever 6, and the guiding surface 8 is abutted against the locking block 532; the deflector rod 524 enables the fan main body 2 to rotate in one direction only, so that the phenomenon that the fan main body 2 reversely rotates under the action of the balancing weight after a worker loosens the fan main body 2 is avoided, and the angle adjustment is more stable and convenient.

The installation block 51 is provided with a locking plate 10, one end of the connecting cylinder 521 far away from the fan main body 2 is rotatably provided with a limiting block 11 matched with the locking plate 10, and the limiting block and a handle on the connecting cylinder 521 can synchronously rotate; the locking plates 10 are provided with two locking plates, and are respectively arranged corresponding to the positions of the front deflector rod 6 and the rear deflector rod 7.

Working principle: as shown in fig. 4-6, the locking plate 10 is perpendicular to the end surface of the mounting block 51, one long, one short, one long locking plate 10 corresponds to the rear shift lever 7, and one short locking plate 10 corresponds to the front shift lever 6; when a worker needs to rotate the fan main body 2 forwards, the connecting cylinder 521 is pulled outwards through the handle, the pulled connecting cylinder 521 can drive the limiting block 11 to move, then the limiting block 11 is rotated, after the limiting block 11 corresponds to the shorter locking plate 10, the worker can loosen the connecting cylinder, then the connecting cylinder can reset under the action of the reset spring, at the moment, the limiting block 11 can prop against the shorter locking plate, so that the front deflector 6 is positioned in the locking groove of the chuck and corresponds to the locking block 532, one surface of the front deflector 6 corresponding to the locking block 532 is provided with an inclined guide surface 8, under the action of the guide surface 8, the chuck can only rotate in one direction, and then the fan main body 2 can not rotate reversely after rotating forwards and unidirectionally, the situation that the fan main body 2 is reversed under the action of the balancing weight after the worker loosens the fan main body 2 is avoided, the stability of the fan angle is ensured, and the angle of the fan main body 2 is more convenient to adjust by the worker.

When the fan main body 2 needs to rotate backwards, the rear deflector 7 and the locking block 532 are correspondingly made by abutting the limiting block 11 with a longer locking plate in the same way; after the angle of the fan main body 2 is adjusted in place, the limiting block 11 is rotated through the handle, the limiting block 11 is located between the two locking plates, the connecting cylinder is reset under the action of the reset spring, and finally the locking rod 522 can correspond to the locking groove on the chuck, so that the locking of the chuck is realized.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.

Claims

1. An axial flow fan comprises a pair of brackets (1), wherein a fan main body (2) is rotatably arranged between the brackets (1); the fan is characterized in that rotating shafts (3) are arranged on two sides of the fan main body (2), and connecting holes (4) which are rotationally connected with the rotating shafts (3) are formed in the bracket (1); a locking mechanism (5) is arranged between the rotating shaft (3) and the connecting hole (4) on one side; the locking mechanism (5) comprises a mounting block (51) arranged on the bracket (1), a sliding groove (12) is formed in the mounting block (51), and one end of the rotating shaft (3) is rotationally connected with the sliding groove (12) and is provided with a chuck (53); the chuck also comprises a locking piece (52) which is in sliding fit with the sliding groove (12), wherein the locking piece (52) is in clamping fit with the chuck (53); the rotation shaft (3) is rotatable when the locking member (52) is away from the chuck (53).

2. The axial flow fan according to claim 1, wherein the locking piece (52) comprises a connecting cylinder (521) slidably arranged in the sliding groove (12), a plurality of locking rods (522) are distributed on one end face of the connecting cylinder (521), and the locking rods (522) are in clamping fit with the chuck (53).

3. An axial flow fan according to claim 2, wherein the chuck (53) comprises a fixing plate (531) rotatably connected with the mounting block (51) and fixedly connected with the rotating shaft (3), a locking block (532) is arranged on the periphery of the fixing plate (531), and a locking groove clamped with the locking rod (522) is formed between adjacent locking blocks (532).

4. An axial flow fan according to claim 2, characterized in that the bottom of the fan body (2) is provided with a counterweight.

5. The axial flow fan according to claim 4, wherein one end of the locking rod (522) is elastically hinged with a deflector rod (524), and the deflector rod (524) can swing upwards when the chuck (53) rotates; the deflector rod (524) comprises a front deflector rod (6) and a rear deflector rod (7), a guide surface (8) with opposite inclination directions is arranged below the front deflector rod (6) and the rear deflector rod (7), and the guide surface (8) is abutted against the locking block (532).

6. The axial flow fan according to claim 5, wherein the mounting block (51) is provided with a locking plate (10), one end of the connecting cylinder (521) far away from the fan main body (2) is rotatably provided with a limiting block (11) matched with the locking plate (10), and the locking plate (10) is provided with two blocks which are respectively arranged corresponding to the positions of the front deflector rod (6) and the rear deflector rod (7).

7. An axial flow fan according to claim 2, characterized in that a return spring (9) is arranged between the connecting cylinder (521) and the sliding groove (12).