Low-noise bearing retainer for axial flow fan

Abstract

The utility model relates to the technical field of retainers, and discloses a low-noise bearing retainer for an axial flow fan, which comprises a retainer main body, a noise reduction mechanism is fixedly arranged above the retainer main body, the noise reduction mechanism comprises a compression ring, an oil box is arranged at the upper end of the compression ring, an oil inlet groove is arranged in the compression ring, and the oil inlet groove is communicated with the oil box. A sealing ring is arranged on the periphery of the outer side of the oil inlet groove, an oil inlet hole is formed in the surface of the upper end of the retainer body, balls are installed in the retainer body, the oil inlet hole is matched with the oil inlet groove, lubricating oil is added from the oil box by opening the box cover, operation is convenient, the balls installed in the retainer body can be lubricated, and the service life of the retainer body is prolonged. The friction force generated when the balls roll is reduced, noise generated when the balls move in the retainer body is reduced, the balls can be continuously lubricated through the oil inlet grooves and the oil inlet holes, the lubricity is improved, the sealing ring can prevent lubricating oil from flowing out, the attractiveness is improved, and the practicability of the device is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of retainer, concretely is a low noise bearing retainer for axial flow fan. BACKGROUND

[0002] Bearing noise is a kind of sound phenomenon produced by the vibration and mutual collision of each part of bearing in the running process, and the elastic vibration and forced vibration of bearing parts are called solid sound, and the air vibration caused by solid sound in the audio frequency range is the noise of bearing. For some precision instruments or household appliances, the use of bearing is essential, but the noise produced by bearing can reduce the use effect of equipment.

[0003] The existing low noise bearing retainer for axial flow fan usually needs to coat butter grease on the retainer and rolling element during use, and the coating of butter grease can cause unattractive phenomenon, and the application range is limited, therefore, the application provides a low noise bearing retainer for axial flow fan. SUMMARY

[0004] The utility model discloses a low noise bearing retainer for axial flow fan, which solves the problems raised in the background art.

[0005] The utility model provides a low noise bearing retainer for axial flow fan, including the retainer main part, the retainer main part upper fixed installation has the noise reduction mechanism, the noise reduction mechanism includes the pressing ring, the pressing ring upper end is installed with the oil box, the oil box top is fixedly installed with the box cover, the pressing ring inside is equipped with the oil inlet groove, the oil inlet groove outside is provided with the sealing ring, the retainer main part upper end surface is equipped with the oil inlet, the retainer main part inside is installed with the ball.

[0006] Through the cooperation between the oil inlet on the upper end surface of the retainer main body and the oil inlet groove in the pressing ring, the box cover is opened to add lubricating oil from the oil box, which is convenient to operate, can lubricate the ball installed in the retainer main body, further reduce the friction when the ball rolls, reduce the noise when the ball moves in the retainer main body, and the oil inlet groove and the oil inlet can continuously lubricate the ball to increase the lubricity, the sealing ring can block the lubricating oil from flowing out, also improve the appearance, thereby improving the practicability of the device.

[0007] Optionally, the surface of the pressing ring is fixedly installed with a fixed bolt, the fixed bolt penetrates the pressing ring and is fixedly screwed with the retainer main body, ball grooves are formed on the annular side surface of the retainer main body, the ball grooves are slidably connected with the balls, and the ball grooves are correspondingly arranged with the oil inlets.

[0008] Through the fixing bolt, the compression ring can be fixed on the cage main body, the ball groove facilitates assembling the ball in the cage main body, and the ball is facilitated to roll in the cage main body, thereby improving the practicability of the device.

[0009] Optionally, the cage main body is internally provided with a bearing inner ring, the bearing inner ring is rotationally connected with the cage main body, and the ball is installed between the cage main body and the bearing inner ring.

[0010] Through the rotation of the ball bearing inner ring in the cage main body, the practicability of the device is improved.

[0011] Optionally, the sealing ring is tightly attached between the cage main body and the noise reduction mechanism.

[0012] Through the sealing ring, the lubricating oil is prevented from flowing out, and the sealing ring also plays a dustproof role, thereby improving the practicability of the device.

[0013] Optionally, the compression ring and the cage main body are provided with threaded grooves at corresponding positions, and the threaded grooves are adapted to the size of the fixing bolt.

[0014] Through the threaded grooves, the noise reduction mechanism can be fixed on the cage main body by the fixing bolt, thereby improving the practicability of the device.

[0015] Optionally, the bottom of the cage main body is provided with a sound-absorbing pad.

[0016] Through the sound-absorbing pad, noise reduction is further performed, thereby improving the practicability of the device.

[0017] Optionally, the bottom of the cage main body is fixedly provided with a rear frame body, and the sound-absorbing pad is tightly attached between the rear frame body and the cage main body.

[0018] Through the tight attachment between the sound-absorbing pad, the rear frame body and the cage main body, the noise during operation is increased, thereby improving the practicability of the device.

[0019] Compared with the prior art, the beneficial effects of the technical scheme of the present application are as follows:

[0020] The technical scheme of the application utilizes the cooperation between the oil inlet hole on the upper end surface of the retainer main body and the oil inlet groove in the pressure ring, adds lubricating oil from the oil box by opening the box cover, and the operation is convenient, the ball installed in the retainer main body can be lubricated, the friction when the ball rolls is reduced, the noise when the ball moves in the retainer main body is reduced, the ball can be continuously lubricated through the oil inlet groove and the oil inlet hole, the lubricating oil is prevented from flowing out by the sealing ring, the appearance is improved, and the practicability of the device is greatly improved.

[0021] The technical scheme of the application fixes the pressure ring above the retainer main body through the fixing bolt, the ball groove facilitates the assembly of the ball in the retainer main body, the ball rolls in the retainer main body, the sound-absorbing pad is tightly attached between the rear frame body and the retainer main body, the noise during operation is reduced, and the practicability of the device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a schematic diagram of the noise reduction mechanism structure of the application;

[0025] Figure 3 It is an enlarged schematic diagram of the internal structure of the application;

[0026] Figure 4 It is an enlarged structure schematic diagram of the A place of the application.

[0027] In the figure: 1, retainer main body; 2, noise reduction mechanism; 21, pressure ring; 22, oil box; 23, box cover; 24, oil inlet groove; 25, sealing ring; 26, oil inlet hole; 3, fixing bolt; 4, bearing inner ring; 5, ball; 6, ball groove; 7, sound-absorbing pad; 8, rear frame body. DETAILED DESCRIPTION

[0028] Please refer to Figures 1-4 The application provides a low-noise bearing retainer for an axial flow fan, which comprises a retainer main body 1, a noise reduction mechanism 2 is fixedly installed above the retainer main body 1, the noise reduction mechanism 2 comprises a pressure ring 21, an oil box 22 is installed on the upper end of the pressure ring 21, a box cover 23 is fixedly installed on the top of the oil box 22, an oil inlet groove 24 is formed in the pressure ring 21, a sealing ring 25 is arranged around the outer side of the oil inlet groove 24, an oil inlet hole 26 is formed on the upper end surface of the retainer main body 1, and a ball 5 is installed in the retainer main body 1.

[0029] By adopting the above technical scheme, the cooperation between the oil inlet hole 26 on the upper end surface of the retainer main body 1 and the oil inlet groove 24 in the pressure ring 21 is utilized, the oil box 22 is opened by adding lubricating oil, the operation is convenient, the installed ball 5 in the retainer main body 1 can be lubricated, the friction of the ball 5 during rolling is reduced, the noise of the ball 5 during movement in the retainer main body 1 is reduced, the oil inlet groove 24 and the oil inlet hole 26 can continuously lubricate the ball 5 and increase the lubricity, the sealing ring 25 can block the lubricating oil from flowing out, and the appearance is improved, so that the practicability of the device is improved.

[0030] In some technical solutions, as shown in Figures 1-4 The fixed bolt 3 is fixedly installed on the surface of the pressure ring 21, the fixed bolt 3 is fixedly screwed with the retainer main body 1, the spherical groove 6 is arranged on the annular side surface of the retainer main body 1, the spherical groove 6 is slidably connected with the ball 5, and the spherical groove 6 is correspondingly arranged with the oil inlet hole 26.

[0031] In use, the pressure ring 21 can be fixed above the retainer main body 1 by the fixed bolt 3, the design of the spherical groove 6 facilitates the assembly of the ball 5 in the retainer main body 1, and the ball 5 rolls in the retainer main body 1, so that the practicability of the device is improved.

[0032] In some technical solutions, as shown in Figures 1-4 The bearing inner ring 4 is installed in the retainer main body 1, the bearing inner ring 4 is rotatably connected with the retainer main body 1, and the ball 5 is installed between the retainer main body 1 and the bearing inner ring 4.

[0033] In use, the ball 5 and the bearing inner ring 4 rotate in the retainer main body 1, so that the practicability of the device is improved.

[0034] In some technical solutions, as shown in Figures 1-4 The sealing ring 25 is tightly attached between the retainer main body 1 and the noise reduction mechanism 2.

[0035] In use, the sealing ring 25 can block the lubricating oil from flowing out, and the sealing ring 25 also has a dustproof effect, so that the practicability of the device is improved.

[0036] In some technical solutions, Figures 1-4 The threaded groove is arranged at the corresponding position of the pressure ring 21 and the retainer main body 1, and is matched with the fixed bolt 3.

[0037] In use, the noise reduction mechanism 2 can be fixed above the retainer main body 1 by the fixed bolt 3 through the threaded groove, so that the practicability of the device is improved.

[0038] In some technical solutions, Figures 1-4As shown, the bottom of the cage body 1 is provided with sound-absorbing pads 7.

[0039] In use, the sound-absorbing pads 7 further reduce noise, thereby improving the practicality of the device.

[0040] In some technical solutions, Figures 1-4 As shown, the bottom of the cage body 1 is provided with sound-absorbing pads 7.

[0041] In use, the sound-absorbing pads 7 further reduce noise, thereby improving the practicality of the device.

[0042] Working principle: when the device rotates, the bearing inner ring 4 first rotates with the ball 5 in the cage body 1, and the oil inlet hole 26 on the upper surface of the cage body 1 cooperates with the oil inlet groove 24 inside the compression ring 21 to open the box cover 23 and add lubricating oil from the oil box 22, which is convenient to operate and can lubricate the ball 5 installed inside the cage body 1, thereby reducing the friction of the ball 5 when rolling and reducing the noise of the ball 5 when moving in the cage body 1. The oil inlet groove 24 and the oil inlet hole 26 can continuously lubricate the ball 5 to increase the lubricity, the sealing ring 25 can prevent the lubricating oil from flowing out and also improve the appearance, the fixing bolt 3 can fix the compression ring 21 above the cage body 1, the design of the spherical groove 6 facilitates the assembly of the ball 5 inside the cage body 1 and the rolling of the ball 5 inside the cage body 1, the sealing ring 25 also plays a dustproof role, and the sound-absorbing pads 7 tightly fit between the rear body 8 and the cage body 1 to increase the noise removal when running.

Claims

1. A low-noise bearing retainer for an axial flow fan, comprising a retainer body (1), characterized in that: The invention comprises a retainer body (1), a noise reduction mechanism (2) is fixedly installed on the upper side of the retainer body (1), the noise reduction mechanism (2) comprises a pressure ring (21), an oil box (22) is installed on the upper end of the pressure ring (21), a box cover (23) is fixedly installed on the top of the oil box (22), an oil inlet groove (24) is provided inside the pressure ring (21), a sealing ring (25) is provided around the outer side of the oil inlet groove (24), an oil inlet hole (26) is provided on the upper end surface of the retainer body (1), and a ball (5) is installed inside the retainer body (1).

2. The low-noise bearing retainer for an axial flow fan according to claim 1, characterized in that: A fixing bolt (3) is fixedly installed on the surface of the pressure ring (21), and the fixing bolt (3) passes through the pressure ring (21) and is fixedly threadedly connected to the retainer body (1). A ball groove (6) is opened on the annular side surface of the retainer body (1), and the ball groove (6) is slidably connected to the ball (5), and the ball groove (6) is corresponding to the oil inlet hole (26).

3. The low-noise bearing retainer for an axial flow fan according to claim 1, characterized in that: A bearing inner ring (4) is installed inside the retainer body (1), the bearing inner ring (4) is rotatably connected to the retainer body (1), and the ball (5) is installed between the retainer body (1) and the bearing inner ring (4).

4. The low-noise bearing retainer for an axial flow fan according to claim 1, characterized in that: The sealing ring (25) is tightly fitted to the retainer body (1) and the noise reduction mechanism (2).

5. The low-noise bearing retainer for an axial flow fan according to claim 1, characterized in that: Threaded grooves are provided at corresponding positions of the pressure ring (21) and the retaining frame body (1), and are adapted in size to the fixing bolts (3).

6. The low-noise bearing retainer for an axial flow fan according to claim 1, characterized in that: A sound-absorbing pad (7) is provided at the bottom of the retainer body (1).

7. The low-noise bearing retainer for an axial flow fan according to claim 6, characterized in that: A rear frame body (8) is fixedly mounted on the bottom of the retaining frame body (1), and the sound-absorbing pad (7) is tightly fitted to the rear frame body (8) and the retaining frame body (1).

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