A buckle and screw fixed fan gear box

Abstract

The utility model discloses a kind of buckle and screw fixed fan tooth box, including fan blade seat, mounting seat, clamping block, the central shaft seat for being connected with power source is equipped in fan blade seat middle part, mounting seat is equipped with several groups and several groups mounting seat is connected on fan blade seat in annular, fan blade is installed in mounting seat, positioning member for making fan blade fast positioning installation is equipped on mounting seat, positioning member includes L-shaped side plate, clamping block is connected on fan blade, by the sliding strip on the fan blade sliding insertion in L-shaped side plate, by the sliding fit of L-shaped side plate and sliding strip, the fast pre-positioning of fan blade is realized, the clamping of cooperation clamping block and clamping groove is completed preliminary fixed, and then fixed by screw, adopt the double fixed mode of "buckle+screw", avoid the deflection of fan blade in screw tightening process, and the screw connection of screw and threaded cylinder through mounting hole, can eliminate clearance, ensure the rigid connection of fan blade and mounting seat, reduce eccentric vibration when high-speed rotation.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a fan gearbox that is fixed by a clip and screw. Background Technology

[0002] In the overall structure of a fan, the connection and installation between the fan blades and the gearbox fan blade mount is a key factor in determining the fan's operating efficiency. As a component that directly affects airflow, the stable connection between the fan blades and the power output core gearbox fan blade mount directly affects the fan's air delivery efficiency, operational stability, and safety performance.

[0003] The existing traditional installation method for fan blades and gearbox blade holders mainly relies on direct screw fixing. This method has certain problems in actual operation. On the one hand, during installation, the mounting holes of the fan blades need to be precisely aligned with the screw holes of the gearbox blade holders. However, fan blades usually have a certain size and weight. When the operator holds the fan blades for alignment, the hole position is easily misaligned due to hand shaking, requiring repeated adjustments, which seriously affects the installation speed. Especially in mass production scenarios, this inefficient installation method will significantly increase production time and costs. On the other hand, the installation of fan blades and blade holders requires high verticality and concentricity. Traditional screw fixing lacks an effective pre-positioning structure. During the screw tightening process, uneven force may cause a slight misalignment of the relative position of the fan blades and gearbox, which will cause the fan blades to generate eccentric vibration when rotating at high speed. This will not only generate more noise, but also accelerate the wear of the fan blades and blade holders, shorten the service life of the fan, and may even cause the screws to loosen due to long-term vibration, posing a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a snap-fit ​​and screw-fixed fan gearbox to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fan gearbox secured by a clip and screws, comprising:

[0006] A fan blade holder, wherein a central shaft holder for connecting to a power source is provided in the middle of the fan blade holder;

[0007] Mounting base, the mounting base is provided with several sets and the several sets of mounting bases are connected in a ring to the fan blade base, the fan blade is installed in the mounting base, the mounting base is provided with positioning components for quick positioning and installation of the fan blade, the positioning components include L-shaped side plates, the L-shaped side plates are provided with several sets and are respectively connected to both sides of the surface of several sets of mounting bases, and the fan blade surface is connected to both sides of the sliding strip.

[0008] A locking block is attached to the fan blade. By sliding the slider on the fan blade into the L-shaped side plate, the fan blade is correctly positioned and installed into the mounting base, and then locked in place with the mounting base by the locking block.

[0009] Preferably, a positioning groove is provided between the L-shaped side plate and the mounting base, and a plurality of slots are provided on the surface of the fan blade seat. After the slider on the fan blade is slidably inserted into the positioning groove, the locking block and the slot are engaged.

[0010] Preferably, the mounting base is connected to a threaded cylinder, the fan blade has a mounting hole, and the fan blade is screwed to the threaded cylinder by a screw passing through the mounting hole.

[0011] Preferably, a plurality of connecting pieces are connected between the fan blade seat and the central shaft seat.

[0012] Preferably, the mounting base is connected with reinforcing ribs.

[0013] Preferably, the fan blade surface is connected to a guide strip.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The fan blades are quickly pre-positioned by sliding the L-shaped side plate and the slide bar. The initial fixing of a single set of fan blades is completed by the locking of the locking block and the locking slot. Then, the fan blades are fixed by screws. By adopting the dual fixing method of "snap and screw", the fan blades can be prevented from shifting during the screw tightening process after the snap structure achieves quick initial fixing. The screws further eliminate the gap by screwing the mounting hole and the threaded cylinder, ensuring the rigid connection between the fan blades and the mounting base and reducing the eccentric vibration during high-speed rotation.

[0016] (2) Since the fan blades are precisely positioned by the slide bar and the L-shaped side plate, and the double fixing structure avoids loosening or offset, the fan blades can maintain concentricity with the power source when rotating, reducing airflow noise and friction wear between components caused by eccentricity. At the same time, the connecting plate and reinforcing rib enhance the fatigue resistance of the overall structure, reduce the damage to components caused by long-term high-frequency vibration, and significantly extend the service life of the fan.

[0017] (3) The guide strip can guide the airflow entering the fan, so that the airflow passes through the fan blades at a more reasonable angle and path. When the fan is running, the irregular airflow enters the fan and the guide strip can sort it into airflow that matches the rotation direction of the fan blades, so as to avoid the airflow forming turbulence around the fan blades and allow the airflow to be smoothly accelerated and guided by the fan blades, thereby improving the air delivery efficiency. Attached Figure Description

[0018] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0020] Figure 3 This is a structural schematic diagram of the present invention from a first-view perspective after the fan blade and mounting base have been disassembled.

[0021] Figure 4 This is a structural schematic diagram of the present invention from a second perspective after the fan blade and mounting base have been disassembled.

[0022] In the diagram: 1. Fan blade seat; 2. Central shaft seat; 3. Mounting seat; 4. Fan blade; 5. L-shaped side plate; 6. Sliding bar; 7. Locking block; 8. Positioning groove; 9. Locking groove; 10. Threaded cylinder; 11. Mounting hole; 12. Connecting piece; 13. Reinforcing rib; 14. Guide bar. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0025] This utility model provides, for example Figure 1-4 The shown is a clip-on and screw-fixed fan gearbox, comprising:

[0026] The fan blade seat 1 has a central shaft seat 2 in the middle for connecting to a power source. The fan blade seat 1 is connected to the power source through the central shaft seat 2. The power source is generally a rotating drive device such as a motor. When the power source drives the central shaft seat 2 to rotate, according to the shaft transmission principle in mechanical transmission, the central shaft seat 2 can drive the fan blade seat 1 to rotate synchronously.

[0027] Mounting base 3, the mounting base 3 is provided with several sets and the several sets of mounting base 3 are connected in a ring to the fan blade base 1, the fan blade 4 is installed in the mounting base 3, the mounting base 3 is provided with positioning components for quick positioning and installation of the fan blade 4, the positioning components include L-shaped side plates 5, the L-shaped side plates 5 are provided with several sets and are respectively connected to both sides of the surface of several sets of mounting base 3, and the fan blade 4 is connected to both sides of the surface of the fan blade 4.

[0028] The locking block 7 is connected to the fan blade 4. By sliding the slide bar 6 on the fan blade 4 into the L-shaped side plate 5, the fan blade 4 is correctly positioned and installed into the mounting base 3, and is fixed to the mounting base 3 by the locking block 7.

[0029] A positioning groove 8 is provided between the L-shaped side plate 5 and the mounting base 3. Several slots 9 are provided on the surface of the fan blade seat 1. After the slide bar 6 on the fan blade 4 is slidably inserted into the positioning groove 8, the locking block 7 cooperates with the slot 9 to engage.

[0030] The mounting base 3 is connected to a threaded cylinder 10, and the fan blade 4 is provided with a mounting hole 11. The fan blade 4 is screwed to the threaded cylinder 10 by a screw that passes through the mounting hole 11.

[0031] A plurality of connecting pieces 12 are connected between the fan blade seat 1 and the central shaft seat 2. The connecting pieces 12 firmly connect the fan blade seat 1 and the central shaft seat 2 together, enhancing the connection strength between the two and ensuring that the power can be transmitted stably during rotation.

[0032] The mounting base 3 is connected to a reinforcing rib 13, which increases the moment of inertia of the mounting base 3 and improves its resistance to deformation. When the fan rotates at high speed, the fan blade 4 will generate a large centrifugal force. The reinforcing rib 13 can effectively resist the deformation caused by this centrifugal force, ensuring the stability of the overall structure when rotating at high speed, so that the fan can operate safely and reliably.

[0033] The fan blade 4 is connected to a guide strip 14, which can guide the airflow entering the fan, so that the airflow passes through the fan blade at a more reasonable angle and path, and the airflow can be smoothly accelerated and guided by the fan blade 4, thereby improving the air delivery efficiency.

[0034] The clip and screws secure the fan housing. During fan blade 4 installation, precise alignment is achieved first using positioning components. The sliding strips 6 on both sides of the fan blade 4's surface slide into the L-shaped side plates 5 on both sides of the mounting base 3's surface. The operator aligns the sliding strip 6 with the positioning groove 8 between the L-shaped side plates 5 and slides it in along the groove. During this sliding process, the L-shaped side plates 5 exert horizontal and vertical constraint forces on the sliding strip 6, limiting the fan blade 4's horizontal and vertical offset and ensuring that the fan blade 4 moves along a preset trajectory, quickly achieving initial alignment with the mounting base 3. This allows the fan blade 4 to accurately and quickly reach the predetermined installation position. As the fan blade 4 passes the sliding strip 6... After being fully slid into the L-shaped side plate 5, the locking block 7 on the fan blade 4 precisely aligns with the locking groove 9 on the mounting base 3. The locking block 7 and the locking groove 9 adopt an elastic locking design. The locking block 7 is usually made of a material with a certain degree of elasticity, such as elastic plastic. When the locking block 7 approaches the locking groove 9, under the pushing force of the operator, the locking block 7 undergoes elastic deformation and slides smoothly into the locking groove 9. After entering the locking groove 9, the locking block 7 relies on its own elastic restoring force to tightly lock the edge of the locking groove 9, forming a stable locking state. This allows the fan blade 4 to be temporarily fixed in the mounting base 3, completing the tool-free quick fixing and providing a good positioning basis for subsequent screw reinforcement.

[0035] Based on the snap-fit ​​fixing, a screw passes through the mounting hole 11 of the fan blade 4 and is screwed to the threaded cylinder 10 on the mounting base 3, achieving a double fixing of "snap-fit ​​+ screw". The threaded cylinder 10 is integrally formed with the mounting base 3 and has standard threads machined inside. When the screw is screwed into the threaded cylinder 10, according to the principle of screw transmission, the rotational motion of the screw is converted into axial linear motion, generating axial tension. As the screw is tightened, the axial tension gradually increases, tightly pulling the fan blade 4 and the mounting base 3 together, further eliminating the gap between them. This tight connection ensures a rigid connection between the fan blade 4 and the mounting base 3, so that the fan blade 4 will not be displaced relative to the mounting base 3 when the fan rotates at high speed. The double fixing method not only improves the firmness of the connection, but also distributes the force and enhances the reliability of the overall structure.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A buckle and screw fixing fan gear case, characterized by, include: Fan blade seat (1), the fan blade seat (1) is provided with a central shaft seat (2) for connecting to the power source in the middle; Mounting base (3), the mounting base (3) is provided with several sets and the several sets of mounting bases (3) are connected in a ring on the fan blade base (1), the fan blade (4) is installed in the mounting base (3), the mounting base (3) is provided with positioning components for quick positioning and installation of the fan blade (4), the positioning components include L-shaped side plates (5), the L-shaped side plates (5) are provided with several sets and are respectively connected to both sides of the surface of the several sets of mounting bases (3), and the fan blade (4) is connected to both sides of the surface of the fan blade (4); The locking block (7) is connected to the fan blade (4). By sliding the slide bar (6) on the fan blade (4) into the L-shaped side plate (5), the fan blade (4) is correctly positioned and installed into the mounting base (3) and fixed by the locking block (7) to the mounting base (3).

2. The fan gearbox fixed by a buckle and screw according to claim 1, characterized in that: A positioning groove (8) is provided between the L-shaped side plate (5) and the mounting base (3). Several slots (9) are provided on the surface of the fan blade seat (1). After the slide bar (6) on the fan blade (4) slides into the positioning groove (8), the locking block (7) and the slot (9) cooperate to engage.

3. The fan gearbox fixed by a buckle and screw according to claim 1, characterized in that: The mounting base (3) is connected to a threaded cylinder (10) on its surface. The fan blade (4) has an installation hole (11) inside. The fan blade (4) is screwed to the threaded cylinder (10) by a screw that passes through the installation hole (11).

4. The fan gearbox fixed by a buckle and screw according to claim 1, characterized in that: Several connecting pieces (12) are connected between the fan blade seat (1) and the central shaft seat (2).

5. A fan gearbox fixed by a buckle and screw according to claim 1, characterized in that: The mounting base (3) is connected to a reinforcing rib (13).

6. The fan gearbox fixed by a buckle and screw according to claim 1, characterized in that: The fan blade (4) has a guide strip (14) attached to its surface.

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