Silent bearing

Abstract

The utility model relates to bearing technical field, and disclose a kind of mute bearing, including outer ring and inner ring, the inner ring is located the inside of outer ring, and it is provided with retainer between the outer ring and inner ring, the inside of the retainer is provided with several ball bearings, the inside of the outer ring is provided with sound insulation mechanism;The sound insulation mechanism includes the two housings of being set in the both sides of outer ring, the side of the housing close to outer ring is fixedly connected with sound insulation cotton block, the circumferential side of the sound insulation cotton block is equipped with transmission hole, and the side of the housing is provided with positioning mechanism;The utility model sets up sound insulation mechanism, can by the housing of being set in the inner ring surface, by positioning mechanism to the housing is positioned, when the noise of bearing interior friction is generated, noise will enter inside transmission hole, in transmission hole inside is snakelike propagation, improve the distance of sound propagation, simultaneously sound insulation cotton block will absorb the noise generated, realize the effect of mute.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a silent bearing. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] A search revealed a Chinese patent document disclosing a silent motor bearing [Announcement No.: CN220523065U]. This bearing includes an outer ring, an inner ring, and a cage, with the inner ring positioned inside the outer ring. This invention, by incorporating a noise-reducing mechanism, restricts the position of the sound-insulating ring by placing a positioning ring on the surface of the inner ring. This allows the sound-insulating ring to reduce noise during motor bearing rotation, solving the problem of noise pollution caused by the rotating motor bearing itself, thus reducing its practicality. Furthermore, the replacement mechanism allows for easy removal and replacement of the sound-insulating ring when it is damaged. By sequentially rotating four gears in conjunction with the replacement mechanism, an L-shaped positioning rod is moved along the guide rod's trajectory out of the positioning hole. This addresses the issue of easily worn sound-insulating rings requiring timely replacement, but where existing replacement methods are cumbersome and difficult for users to perform without tools.

[0004] When a mechanical rotating body rotates, it drives the bearing to rotate as well. When the bearing rotates, friction is generated between the internal structures. Furthermore, existing bearings have poor sound insulation, which can produce significant noise. Utility Model Content

[0005] The purpose of this invention is to provide a silent bearing to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a silent bearing, comprising an outer ring and an inner ring, wherein the inner ring is located inside the outer ring, a cage is provided between the outer ring and the inner ring, a plurality of balls are provided inside the cage, and a sound insulation mechanism is provided inside the outer ring;

[0007] The sound insulation mechanism includes two housings disposed on both sides of the outer ring. A sound insulation cotton block is fixedly connected to the side of the housing closest to the outer ring. A conduction hole is opened on the circumferential side of the sound insulation cotton block. A positioning mechanism is provided on one side of the housing.

[0008] Preferably, the positioning mechanism includes four connecting blocks fixedly connected to one side of the housing. A cylinder is fixedly connected to one side of each connecting block. A spring is fixedly connected to the inner wall of the cylinder. A support block is fixedly connected to one end of each spring. A positioning rod is fixedly connected to one side of each support block. One end of the positioning rod extends through to the outside of the cylinder. A positioning hole is provided on the inner wall of the outer ring to cooperate with the positioning rod.

[0009] Preferably, one end of the positioning rod is spherical, and the inner wall of the outer ring is provided with an extrusion groove that cooperates with the positioning rod.

[0010] Preferably, the sound-insulating cotton block is made of porous fiber material.

[0011] Preferably, the conductive holes are serpentine in shape and there are several of them.

[0012] Preferably, the circumferential side of the housing has a fastening groove, and the number of fastening grooves is two.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a sound insulation mechanism, can position the housing by fitting the housing onto the inner ring surface and positioning it by a positioning mechanism. When noise is generated by internal friction of the bearing, the noise will enter the transmission hole and propagate in a serpentine manner within the transmission hole, increasing the distance of sound propagation. At the same time, the sound insulation cotton block will absorb the generated noise, achieving the effect of silence.

[0015] 2. This utility model, by setting a positioning mechanism, can install the sound insulation mechanism on the outer ring to achieve the sound insulation effect. At the same time, by inserting a finger into the groove and pressing the housing, the positioning mechanism can be moved. The ball part of the positioning rod will be squeezed against the positioning hole and retract into the housing. At this time, the sound insulation mechanism can be removed. Afterwards, lubricating oil can be applied inside the bearing to further improve the quietness effect. The sound insulation mechanism and the bearing are designed as separate parts by the positioning mechanism, which facilitates the later maintenance of the bearing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a perspective view taken in cross-section of this utility model;

[0018] Figure 3 This is a schematic diagram of a top section of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle.

[0020] In the diagram: 1. Outer ring; 2. Inner ring; 3. Cage; 4. Ball bearing; 5. Housing; 6. Sound insulation cotton block; 7. Conductive hole; 8. Connecting block; 9. Cylinder; 10. Spring; 11. Support block; 12. Positioning rod; 13. Positioning hole; 14. Extrusion groove; 15. Clip groove. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 - Figure 4 As shown,

[0023] Example 1:

[0024] A silent bearing includes an outer ring 1 and an inner ring 2, the inner ring 2 being located inside the outer ring 1, a cage 3 being provided between the outer ring 1 and the inner ring 2, a plurality of balls 4 being provided inside the cage 3, and a sound insulation mechanism being provided inside the outer ring 1.

[0025] The sound insulation mechanism includes two housings 5 ​​located on both sides of the outer ring 1. A sound insulation cotton block 6 is fixedly connected to the side of the housing 5 closest to the outer ring 1. A conduction hole 7 is opened on the circumferential side of the sound insulation cotton block 6. A positioning mechanism is provided on one side of the housing 5.

[0026] In this embodiment, considering that the mechanical rotating body will drive the bearing to rotate during rotation, and friction will be generated between the internal structures of the bearing during rotation, and the existing bearing has poor sound insulation effect, resulting in a large amount of noise, a sound insulation mechanism is set up. By fitting the housing 5 onto the surface of the inner ring 2, and then rotating the housing 5, the positioning rod 12 in the positioning mechanism is positioned relative to the extrusion groove 14. Then, the housing 5 is pushed, causing the spherical part of the positioning rod 12 in the positioning mechanism to contact the sloping part of the inner wall of the extrusion groove 14. Under the influence of extrusion, the positioning rod 12 will retract into the cylinder 9, and at the same time, it will drive the support block 11 to extrude the spring 10. After reaching the appropriate position, the reaction force generated by the spring 10 will push the support block 11 and the positioning rod 12 to move away from the spring 10, so that the positioning rod 12 enters the corresponding positioning hole 13, completing the positioning of the housing 5. When the internal friction of the bearing generates noise, the noise will enter the conduction hole 7 and propagate in a serpentine manner within the conduction hole 7, increasing the distance of sound propagation. At the same time, the sound insulation cotton block 6 will absorb the generated noise, achieving the effect of silence.

[0027] The sound insulation cotton block 6 is made of porous fiber material.

[0028] In this embodiment, sound-absorbing cotton block 6 is set. The material of sound-absorbing cotton block 6 is preferably polyester fiber, which can absorb noise through its internal porous structure, effectively improving the noise reduction effect.

[0029] The conduction holes 7 are serpentine in shape and there are several of them.

[0030] In this embodiment, by setting a conductive hole 7, wherein the conductive hole 7 is serpentine and there are several of them, when noise is generated, the noise will propagate in the conductive hole 7, increasing the distance of noise propagation, thereby achieving the effect of noise reduction.

[0031] Example 2:

[0032] Based on Embodiment 1, the sound insulation mechanism in this embodiment can make the bearing have the effect of noise reduction and quieting. However, the bearing needs to be properly lubricated to reduce friction. The installation of the sound insulation mechanism makes subsequent maintenance inconvenient. In this application, the positioning mechanism includes four connecting blocks 8 fixedly connected to one side of the housing 5. A cylinder 9 is fixedly connected to one side of the connecting block 8. A spring 10 is fixedly connected to the inner wall of the cylinder 9. A support block 11 is fixedly connected to one end of the spring 10. A positioning rod 12 is fixedly connected to one side of the support block 11. One end of the positioning rod 12 extends to the outside of the cylinder 9. A positioning hole 13 is opened on the inner wall of the outer ring 1 to cooperate with the positioning rod 12.

[0033] In this embodiment, by setting a positioning mechanism, the sound insulation mechanism can be installed on the outer ring 1 to achieve the sound insulation effect. At the same time, by inserting a finger into the buckle groove 15 and snapping the housing 5, the positioning mechanism can be moved. The spherical part of the positioning rod 12 will be squeezed against the positioning hole 13 and retract into the housing 5. At this time, the sound insulation mechanism can be removed. Afterwards, lubricating oil can be applied inside the bearing to further improve the quietness effect. The sound insulation mechanism and the bearing are designed separately by the positioning mechanism, which facilitates the later maintenance of the bearing.

[0034] One end of the positioning rod 12 is spherical, and the inner wall of the outer ring 1 is provided with an extrusion groove 14 that cooperates with the positioning rod 12.

[0035] In this embodiment, by setting the extrusion groove 14, when the spherical part of the positioning rod 12 comes into contact with the sloping part of the inner wall of the extrusion groove 14, the positioning rod 12 will retract into the cylinder 9 due to the extrusion effect, thus facilitating the installation of the sound insulation mechanism.

[0036] The shell 5 has two snap-fit ​​grooves 15 on its circumferential side.

[0037] In this embodiment, by setting a buckle groove 15, a finger can be inserted into the buckle groove 15 to buckle the housing 5, thereby facilitating the removal of the sound insulation mechanism.

[0038] Working principle: The user places the housing 5 on the surface of the inner ring 2, then rotates the housing 5 so that the positioning rod 12 in the positioning mechanism is aligned with the extrusion groove 14. Then, the user pushes the housing 5, causing the spherical part of the positioning rod 12 in the positioning mechanism to contact the sloping part of the inner wall of the extrusion groove 14. Under the influence of extrusion, the positioning rod 12 will retract into the cylinder 9, and at the same time, it will cause the support block 11 to extrude the spring 10. After reaching the appropriate position, the reaction force generated by the spring 10 will push the support block 11 and the positioning rod 12 to move away from the spring 10, so that the positioning rod 12 enters the corresponding positioning hole 13, thus completing the positioning of the housing 5. When the bearing generates noise due to friction, the noise will enter the conduction hole 7 and propagate in a serpentine manner within the conduction hole 7, increasing the distance of sound propagation. At the same time, the sound insulation cotton block 6 will absorb the generated noise, thus playing a role in silencing.

[0039] At the same time, by inserting a finger into the slot 15 and pressing the housing 5, the positioning mechanism can be moved. The spherical part of the positioning rod 12 will be pressed against the positioning hole 13, causing it to retract into the housing 5. At this time, the sound insulation mechanism can be removed. Afterwards, lubricating oil can be applied inside the bearing to further improve the quietness. The sound insulation mechanism and the bearing are designed separately through the positioning mechanism, which facilitates the later maintenance of the bearing.

[0040] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silent bearing, characterized in that: It includes an outer ring (1) and an inner ring (2), the inner ring (2) being located inside the outer ring (1), a retainer (3) being provided between the outer ring (1) and the inner ring (2), a plurality of balls (4) being provided inside the retainer (3), and a sound insulation mechanism being provided inside the outer ring (1); The sound insulation mechanism includes two housings (5) disposed on both sides of the outer ring (1). A sound insulation cotton block (6) is fixedly connected to the side of the housing (5) near the outer ring (1). A conduction hole (7) is opened on the circumferential side of the sound insulation cotton block (6). A positioning mechanism is provided on one side of the housing (5).

2. A silent bearing according to claim 1, characterized in that: The positioning mechanism includes four connecting blocks (8) fixedly connected to one side of the housing (5). A cylinder (9) is fixedly connected to one side of the connecting block (8). A spring (10) is fixedly connected to the inner wall of the cylinder (9). A support block (11) is fixedly connected to one end of the spring (10). A positioning rod (12) is fixedly connected to one side of the support block (11). One end of the positioning rod (12) extends through to the outside of the cylinder (9). A positioning hole (13) is provided on the inner wall of the outer ring (1) to cooperate with the positioning rod (12).

3. A silent bearing according to claim 2, characterized in that: One end of the positioning rod (12) is spherical, and the inner wall of the outer ring (1) is provided with an extrusion groove (14) that cooperates with the positioning rod (12).

4. A silent bearing according to any one of claims 1-3, characterized in that: The sound insulation cotton block (6) is made of porous fiber material.

5. A silent bearing according to claim 1, characterized in that: The conductive holes (7) are serpentine in shape and there are several of them.

6. A silent bearing according to claim 1, characterized in that: The housing (5) has two buckle slots (15) on its circumferential side.

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