Ventilation regulation and control fan blade mechanism convenient to fix

Abstract

The utility model discloses a ventilation regulation and control fan blade mechanism convenient to fix, which belongs to the technical field of fan blades and comprises a shaft seat and a through hole penetrating through two ends of the shaft seat and arranged in the middle of the shaft seat, L-shaped sliding grooves are uniformly arranged in the shaft seat around the through hole, and two ends of each L-shaped sliding groove are respectively communicated with the inside of the through hole and the outer side of the shaft seat. The multiple sets of L-shaped sliding grooves are evenly formed in the shaft seat around the penetrating hole, the two ends of each L-shaped sliding groove are communicated with the interior of the penetrating hole and the outer end of the shaft seat respectively, the second trapezoid blocks and the third trapezoid blocks are arranged in the L-shaped sliding grooves in a sliding mode, and the bevel edges of the second trapezoid blocks are attached to the bevel edges of the third trapezoid blocks. Through the arrangement of the screw cap, in the process of extruding and fixing the shaft seat by using the screw cap, not only can the end part of the shaft seat be extruded and fixed, but also the shaft rod of the motor can be extruded and limited, so that the rotation stability of the fan blade in the use process is ensured.

Description

Technical Field

[0001] The utility model relates to a fan blade mechanism, in particular to a ventilation regulating fan blade mechanism which is easy to fix, and belongs to the technical field of fan blades. Background Art

[0002] In the prior art, for example, the utility model with application number 202122247237.8 discloses a fan blade for a duct fan. In order to solve the current fan blade setting structure, more fans need to be added to achieve the use effect in occasions where large exhaust wind force is required. However, the use of multiple fans significantly increases production costs and occupies production space. By setting a first fan blade mechanism, multiple arc-shaped fans generate strong centrifugal wind force when rotating, increase exhaust wind force, reduce production costs, save production space, increase production efficiency, and have good market application value.

[0003] Similar to the above application, there are still some shortcomings:

[0004] During the fixing process, the fan blade is fixed to the output shaft of the motor only by applying extrusion force to the end of the shaft seat through the nut. The shaft seat is subjected to extrusion force along the length direction of the motor, and the motor shaft passes through the hole inside the shaft seat, which cannot be limited, affecting the stability during installation and use. In addition, during the installation of the blade, the riveting process is mostly used for fixing. When the blade is damaged, it cannot be disassembled and assembled separately, which is inconvenient for maintenance.

[0005] For this purpose, a ventilation control fan blade mechanism that is easy to fix is ​​designed to optimize the above-mentioned problem. Utility Model Content

[0006] The main purpose of the utility model is to provide a ventilation regulating fan blade mechanism that is easy to fix, by evenly opening a plurality of groups of L-shaped slots around the perforation inside the shaft seat, and the two ends of the L-shaped slot are respectively connected to the inside of the perforation and the outer end of the shaft seat, and a second trapezoidal block and a third trapezoidal block are slidably arranged inside the L-shaped slot, and the hypotenuse of the second trapezoidal block fits with the inclined surface of the third trapezoidal block, so that in the process of squeezing and fixing the shaft seat with a nut, not only the end of the shaft seat can be squeezed and fixed, but also the shaft rod of the motor can be squeezed and limited, thereby ensuring the stability of the rotation of the fan blades during use, and a positioning mechanism composed of a fixing seat, a slot, an installation slot, a reset spring and a first trapezoidal block is evenly arranged on the outer side of the shaft seat, and then used in conjunction with the limit slot on the blade, so that the blade is fixed by plugging during installation, and assembly and disassembly are more convenient and practical.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A ventilation and control blade mechanism that is easy to fix, comprises a shaft seat, a through hole that passes through both ends of the shaft seat and is opened in the middle position of the shaft seat, an L-shaped slide groove is evenly opened around the through hole inside the shaft seat, the two ends of the L-shaped slide groove are respectively connected to the inside of the through hole and the outer end of the shaft seat, a second trapezoidal block is slidably arranged inside the L-shaped slide groove perpendicular to the length direction of the through hole, a third trapezoidal block is slidably arranged at the end of the L-shaped slide groove away from the through hole, the inclined surface of the third trapezoidal block is fitted with the inclined surface of the second trapezoidal block, blades are evenly inserted and installed on the outer side of the shaft seat, and positioning mechanisms for limiting the blades are evenly arranged on the outer side of the shaft seat.

[0009] Preferably, four groups of L-shaped chutes are provided, and the distances between adjacent L-shaped chutes are the same.

[0010] Preferably, the end of the third trapezoidal block away from the second trapezoidal block is evenly provided with anti-slip grooves, and the angles of the inclined surfaces of the third trapezoidal block and the second trapezoidal block are the same.

[0011] Preferably, a funnel cover is provided at one end of the shaft seat away from the second trapezoidal block, and the center of the funnel cover is connected to the end of the perforation.

[0012] Preferably: the positioning mechanism includes a fixed seat, a slot, an installation slot, a return spring and a first trapezoidal block, the fixed seat is evenly fixed on the outer side of the shaft seat, the ends of the fixed seat are provided with slots, the blades are inserted into the inside of the slots, the outer sides of the fixed seats are provided with installation slots, the installation slots pass through the slots, the inner ends of the installation slots are provided with return springs, the inside of the installation slots is slidably installed with a first trapezoidal block, and the first trapezoidal block is connected to the end of the return spring, the inclined surface of the first trapezoidal block is located inside the slot, and the blades are provided with limit grooves that cooperate with the first trapezoidal block.

[0013] Preferably: a cover is slidably provided on the outer side of the fixing seat, and the cover covers the end of the installation groove.

[0014] Preferably, the limiting groove is in a rectangular shape, and the length of the first trapezoidal block is the same as the length of the limiting groove.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a ventilation control fan blade mechanism that is easy to fix. A plurality of L-shaped sliding grooves are evenly arranged around the perforation inside the shaft seat, and the two ends of the L-shaped sliding groove are respectively connected to the inside of the perforation and the outer end of the shaft seat, and a second trapezoidal block and a third trapezoidal block are slidably arranged inside the L-shaped sliding groove. The hypotenuse of the second trapezoidal block fits the oblique surface of the third trapezoidal block, so that in the process of squeezing and fixing the shaft seat with a nut, not only the end of the shaft seat can be squeezed and fixed, but also the shaft rod of the motor can be squeezed and limited, thereby ensuring the stability of the fan blade rotation during use.

[0017] By evenly arranging a positioning mechanism consisting of a fixing seat, a slot, an installation slot, a return spring and a first trapezoidal block on the outer side of the shaft seat, and then using it in conjunction with the limit slots on the blades, the blades are fixed by plugging during installation, which makes assembly and disassembly more convenient and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the exploded structure diagram of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the axle seat of the utility model;

[0021] Figure 4 This is a diagram of the positioning mechanism of the utility model.

[0022] In the figure: 1, shaft seat; 2, through hole; 3, fixed seat; 4, slot; 5, blade; 6, limit slot; 7, mounting slot; 8, return spring; 9, first trapezoidal block; 10, cover; 11, funnel cover; 12, L-shaped slide; 13, second trapezoidal block; 14, third trapezoidal block. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figure 1-Figure 4 As shown, the present embodiment provides a ventilation regulating blade mechanism which is easy to fix, comprising a shaft seat 1, a through hole 2 which passes through both ends of the shaft seat 1 and is opened at the middle position of the shaft seat 1, an L-shaped slide groove 12 is evenly opened around the through hole 2 inside the shaft seat 1, and the two ends of the L-shaped slide groove 12 are respectively connected with the inside of the through hole 2 and the outer end of the shaft seat 1, and a second trapezoidal block 13 is slidably arranged inside the L-shaped slide groove 12 perpendicular to the length direction of the through hole 2, and a third trapezoidal block 14 is slidably arranged at the end of the L-shaped slide groove 12 away from the through hole 2, and the inclined surface of the third trapezoidal block 14 is fitted with the inclined surface of the second trapezoidal block 13, and blades 5 are evenly inserted and installed on the outer side of the shaft seat 1, and a positioning mechanism for limiting the blades 5 is evenly arranged on the outer side of the shaft seat 1.

[0025] Overall working principle: During the installation process, the shaft of the driving motor passes through the inside of the through hole 2, and the thread on the shaft extends to the outside of the shaft seat 1, and then the nut is tightened on the end of the shaft. In the process of the nut moving toward the shaft seat 1, the third trapezoidal block 14 will be squeezed, and the third trapezoidal block 14 slides toward the inside of the L-shaped slide groove 12 and squeezes the second trapezoidal block 13. The second trapezoidal block 13 slides toward the inside of the through hole 2 to squeeze and position the shaft. At this time, the fixation of the shaft seat 1 is completed, and an extrusion force is applied to the shaft seat 1 along the length direction of the shaft, and the side of the shaft is squeezed, so that the fixation is more firm and the installation is more convenient.

[0026] In this embodiment, four groups of L-shaped sliding grooves 12 are provided, and the distances between adjacent L-shaped sliding grooves 12 are the same.

[0027] Partial working principle: through the provision of multiple groups of L-shaped slide grooves 12, multiple groups of trapezoidal blocks can be installed, thereby increasing the contact area with the motor shaft and providing higher installation stability.

[0028] In this embodiment, the end of the third trapezoidal block 14 away from the second trapezoidal block 13 is uniformly provided with anti-slip grooves, and the angles of the inclined surfaces of the third trapezoidal block 14 and the second trapezoidal block 13 are the same.

[0029] Partial working principle: The end of the third trapezoidal block 14 contacts the side of the nut, and the use of the anti-slip pattern improves the installation stability of the nut.

[0030] In this embodiment, a funnel cover 11 is provided at one end of the shaft seat 1 away from the second trapezoidal block 13 , and the center of the funnel cover 11 is connected to the end of the through hole 2 .

[0031] Partial working principle: During the installation of the fan blades, due to the presence of the funnel cover 11, the shaft of the motor can be easily inserted into the through hole 2, making the installation easy.

[0032] In this embodiment, the positioning mechanism includes a fixed seat 3, a slot 4, an installation slot 7, a reset spring 8 and a first trapezoidal block 9. The fixed seat 3 is evenly fixed on the outer side of the shaft seat 1, and the ends of the fixed seat 3 are provided with slots 4. The blades 5 are inserted into the inside of the slots 4. The outer sides of the fixed seat 3 are provided with installation slots 7. The installation slots 7 penetrate the slots 4. The inner ends of the installation slots 7 are provided with reset springs 8. The first trapezoidal block 9 is slidably installed inside the installation slots 7, and the first trapezoidal block 9 is connected to the end of the reset spring 8. The inclined surface of the first trapezoidal block 9 is located inside the slot 4, and the blades 5 are provided with limit slots 6 that cooperate with the first trapezoidal block 9.

[0033] Local working principle: during the installation of blade 5, the end of blade 5 is inserted into the interior of slot 4, and the end of blade 5 first contacts the inclined surface of first trapezoidal block 9. As blade 5 is continuously inserted, first trapezoidal block 9 is squeezed into the interior of mounting slot 7, and reset spring 8 is squeezed. When the end of blade 5 contacts the end of slot 4, reset spring 8 controls the first trapezoidal block 9 to reset and pass through the interior of limiting slot 6. The horizontal surface of first trapezoidal block 9 is attached to the side of limiting slot 6 to stabilize the position of blade 5.

[0034] In this embodiment, a cover 10 is slidably disposed on the outer side of the fixing seat 3 , and the cover 10 covers the end of the installation groove 7 .

[0035] Partial working principle: by using the cover 10, the end of the mounting groove 7 can be covered to prevent dust from entering, and during the disassembly of the blade 5, the cover 10 is opened, the first trapezoidal block 9 is pressed with a tool, and then the blade 5 is pulled out.

[0036] In this embodiment, the limiting groove 6 is in a rectangular shape, and the length of the first trapezoidal block 9 is the same as that of the limiting groove 6 .

[0037] Partial working principle: the contact area between the first trapezoidal block 9 and the inner side of the limiting groove 6 is increased, and the positioning of the blade 5 is more stable.

[0038] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A ventilation control blade mechanism that is easy to fix, comprising a shaft seat (1), a through hole (2) that passes through both ends of the shaft seat (1) and is provided at a middle position of the shaft seat (1), characterized in that: An L-shaped slide groove (12) is evenly arranged around the through hole (2) inside the shaft seat (1), and the two ends of the L-shaped slide groove (12) are respectively connected to the inside of the through hole (2) and the outer end of the shaft seat (1), and a second trapezoidal block (13) is slidably arranged inside the L-shaped slide groove (12) perpendicular to the length direction of the through hole (2), and a third trapezoidal block (14) is slidably arranged at one end of the L-shaped slide groove (12) away from the through hole (2), and the inclined surface of the third trapezoidal block (14) is fitted with the inclined surface of the second trapezoidal block (13), and the outer side of the shaft seat (1) is evenly inserted and installed with blades (5), and the outer side of the shaft seat (1) is evenly provided with a positioning mechanism for limiting the blades (5).

2. The ventilation control blade mechanism that is easy to fix according to claim 1 is characterized in that: Four groups of L-shaped sliding grooves (12) are provided, and the distances between adjacent L-shaped sliding grooves (12) are the same.

3. The ventilation control blade mechanism that is easy to fix according to claim 1 is characterized in that: The end of the third trapezoidal block (14) away from the second trapezoidal block (13) is evenly provided with anti-slip grooves, and the angles of the inclined surfaces of the third trapezoidal block (14) and the second trapezoidal block (13) are the same.

4. The ventilation control blade mechanism that is easy to fix according to claim 1 is characterized in that: A funnel cover (11) is provided at one end of the shaft seat (1) away from the second trapezoidal block (13), and the center of the funnel cover (11) is connected to the end of the through hole (2).

5. The ventilation control blade mechanism that is easy to fix according to claim 1 is characterized in that: The positioning mechanism comprises a fixed seat (3), a slot (4), a mounting slot (7), a reset spring (8) and a first trapezoidal block (9); the fixed seat (3) is evenly fixed on the outer side of the shaft seat (1); the ends of the fixed seat (3) are provided with slots (4); the blades (5) are inserted into the inside of the slots (4); the outer sides of the fixed seat (3) are provided with mounting slots (7); the mounting slots (7) penetrate the slots (4); the inner ends of the mounting slots (7) are provided with reset springs (8); the inside of the mounting slots (7) is slidably provided with a first trapezoidal block (9); the first trapezoidal block (9) is connected to the end of the reset spring (8); the inclined surface of the first trapezoidal block (9) is located inside the slots (4); and the blades (5) are provided with limit slots (6) matched with the first trapezoidal block (9).

6. The ventilation control blade mechanism that is easy to fix according to claim 5, characterized in that: A cover (10) is slidably provided on the outer side of the fixing seat (3), and the cover (10) covers the end of the installation groove (7).

7. The ventilation control blade mechanism that is easy to fix according to claim 6, characterized in that: The limiting groove (6) is in the shape of a rectangle, and the length of the first trapezoidal block (9) is the same as the length of the limiting groove (6).

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