One-way clutch bearing

Abstract

The utility model discloses a one -way clutch bearing, including the outer sleeve, the inner cover and arrange in the retainer of needle passageway, a plurality of needle, a plurality of spring piece, a plurality of spring piece set up in the retainer crossbeam department, a plurality of needle set up in the retainer window hole, the inner peripheral of outer sleeve is the mounting hole of straight -through outer sleeve axial outside, and the both ends of outer sleeve inner peripheral are equipped with sealing baffle ring respectively, and the inner end surface of sealing baffle ring is opposite the axial outer end surface of retainer. The inner peripheral of outer sleeve adopts straight -through / ladder hole mode, need not stamping and so on process, and the machining of outer sleeve can have higher machining accuracy, and the production, installation, maintenance of one -way clutch bearing are also more convenient, through the setting of sealing baffle ring, can form effective block to retainer, makes retainer not appear axial displacement, and the machining accuracy of outer sleeve, inner cover combines, makes bearing operation more stable, improves the vibration reduction, noise reduction ability of bearing to some extent, prolongs the service life of bearing.

Description

Technical Field

[0001] This utility model relates to a one-way clutch bearing. Background Technology

[0002] Commonly used one-way clutch bearings, such as Figure 1 , 2 As shown, it consists of an outer sleeve 10, an inner sleeve 11, needle rollers 12, spring plates 13, and a cage 14. The outer sleeve is formed by stamping and stretching sheet metal, and 90-degree bent flanges 15 are formed at both ends of the outer sleeve. The bent flanges separate the needle roller assembly, consisting of needle rollers, spring plates, and a cage, within the needle roller channel between the outer sleeve and the inner sleeve. This type of one-way clutch bearing has the following corresponding defects:

[0003] Firstly, the outer casing is formed by stamping and stretching sheet metal, resulting in low processing precision and increasing the possibility of vibration and noise during bearing operation.

[0004] Secondly, the production process involves many steps. For example, the outer jacket needs to undergo at least two heat treatments to obtain the bending and retaining edges at both ends. This requires an overall quenching heat treatment of the outer jacket, followed by high-frequency annealing at one end of the rolled edge to reduce hardness and form the retaining edge.

[0005] Third, the multi-stage production process reduces the production efficiency of bearings.

[0006] Fourth, the formation of a rolled edge and a retaining edge at one end of the outer sleeve makes it difficult to maintain the needle roller assembly inside the bearing later, which affects the widespread use of the bearing. Utility Model Content

[0007] The purpose of this invention is to provide a one-way clutch bearing that is structurally stable, has high machining accuracy, and is easy to manufacture.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A one-way clutch bearing includes an outer sleeve and an inner sleeve. A needle roller channel is formed between the middle of the outer circumference of the inner sleeve and the middle of the inner circumference of the outer sleeve. A cage, multiple needle rollers, and multiple spring plates are arranged in the needle roller channel. The multiple spring plates are disposed at the cage, and the multiple needle rollers are disposed in the cage window holes. The inner circumference of the outer sleeve has a mounting hole that extends axially to the outer side of the outer sleeve. Sealing rings are respectively fitted at both ends of the inner circumference of the outer sleeve. The cage is located between the sealing rings, and the inner end face of the sealing ring abuts against the axial outer end face of the cage.

[0010] As a further embodiment, the outer circumference of the sealing ring and the inner circumference of the outer sleeve are fitted with a clearance. By applying an external force from the outer circumference of the bearing, the inner hole of the outer sleeve is reduced, so that the outer circumference of the sealing ring and the inner circumference of the outer sleeve form an interference fit.

[0011] As a further embodiment, the outer periphery of the sealing ring and the inner periphery of the outer sleeve are subjected to an interference fit. The sealing ring is pressed into the end of the inner periphery of the outer sleeve, so that the outer periphery of the sealing ring and the inner periphery of the outer sleeve form an interference connection.

[0012] As a further implementation, the sealing ring and the outer sleeve are connected by a snap ring.

[0013] As a further implementation, stepped mounting holes are provided at both ends of the inner circumference of the outer jacket, and the sealing ring is assembled in the stepped mounting holes.

[0014] As a further implementation, the inner circumference of the outer casing is made by grinding.

[0015] As a further embodiment, after the sealing ring is installed inside the outer sleeve, the outer end face of the sealing ring does not extend beyond the end face of the outer sleeve.

[0016] As a further implementation, the outermost end of the inner periphery of the outer jacket has a flare.

[0017] As a further embodiment, an annular space is maintained between the inner circumference of the sealing ring and the outer circumference of the inner sleeve.

[0018] As a further implementation, the end face of the inner sleeve does not exceed the end face of the outer sleeve.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this solution, the inner circumference of the outer sleeve of the one-way clutch bearing is made to be straight through the outer sleeve shaft, eliminating the need for stamping, stretching and other processes. The outer sleeve can be machined with higher precision, and the manufacturing, installation and maintenance of the one-way clutch bearing are also more convenient. The needle rollers are assembled between the cage window hole, the outer sleeve and the inner sleeve, and then the sealing rings at both ends are pressed in to complete the process.

[0021] By using a sealing ring, the cage can be effectively blocked, preventing axial displacement. Combined with the machining precision of the outer and inner sleeves, this makes the bearing run more stably, improves the bearing's vibration and noise reduction capabilities to a certain extent, and extends the bearing's service life.

[0022] This one-way clutch bearing can be widely used in automotive generator pulleys to improve the stability, smoothness, and lifespan of gasoline and diesel engine accessory pulley systems. Attached Figure Description

[0023] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0024] Figure 1 This is a cross-sectional view of a one-way clutch bearing in the prior art.

[0025] Figure 2 This is a schematic cross-sectional view of the outer sleeve of a conventional one-way clutch bearing.

[0026] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 4 This is a cross-sectional view of the first structure of the outer casing in this utility model;

[0028] Figure 5 This is a cross-sectional view of the second structure of the outer casing in this utility model;

[0029] In the attached diagram, it is marked as follows:

[0030] 1. Outer sleeve, 2. Inner sleeve, 3. Cage, 4. Needle roller, 5. Spring plate, 6. Sealing ring, 7. Mounting hole section, 8. Flared end, 9. Annular space, 10. Conical surface. Detailed Implementation

[0031] 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.

[0032] See Figure 3-5 A one-way clutch bearing includes an outer sleeve 1 and an inner sleeve 2. A needle roller channel is formed between the middle of the outer circumference of the inner sleeve 2 and the middle of the inner circumference of the outer sleeve 1. The inner sleeve 2 and the outer sleeve 1 are annular bodies. The outer sleeve 1 and the inner sleeve 2 have an inner circumference and an outer circumference, respectively. The outer diameter of the inner sleeve 2 is smaller than the inner diameter of the outer sleeve 1. The inner sleeve 2 is located inside the outer sleeve 1. The axis of the inner sleeve 2 and the axis of the outer sleeve 1 are coaxially arranged. Thus, when the inner sleeve 2 is inside the outer sleeve 1, an annular needle roller channel is formed between the middle of the outer circumference of the inner sleeve 2 and the middle of the inner circumference of the outer sleeve 1.

[0033] The cage 3, multiple needle rollers 4, and multiple spring plates 5 are arranged in the needle roller channel. The multiple spring plates 5 are set at the crossbeam of the cage 3, and the multiple needle rollers 4 are set in the window hole of the cage 3. It should be noted that the cage 3, needle rollers 4, and spring plates 5 can be assembled in the needle roller 4 channel using the existing structure and assembly method so that the needle rollers 4 can move between the inner circumference of the outer sleeve 1 and the outer circumference of the inner sleeve 2. The specific structure will not be described in detail here.

[0034] The inner circumference of the outer sleeve 1 has a mounting hole that extends axially to the outer side of the outer sleeve 1. It is mainly described that there is no protruding part protruding from the inner circumferential wall of the outer sleeve 1, so that the relevant components below can be pushed in and installed from the outside of the outer sleeve 1 along its axial direction toward the inner circumference of the outer sleeve 1.

[0035] The inner circumference of the outer sleeve 1 is equipped with sealing rings 6 at both ends. The retainer is located between the two sealing rings. The inner end faces of the two sealing rings 6 abut against the axial outer end face of the retainer 3 to effectively block the end face of the retainer 3, thereby restricting the retainer 3 and the needle rollers 4 and spring plates 5 mounted on it in the needle roller channel, that is, restricting the axial displacement of the retainer 3.

[0036] In one embodiment, the assembly method between the sealing ring 6 and the outer sleeve 1 is as follows: the outer circumference of the sealing ring 6 and the inner circumference of the outer sleeve 1 adopt a clearance fit, that is, the outer diameter of the sealing ring 6 is smaller than the inner diameter of the outer sleeve 1, so that the sealing ring 6 can be freely placed in both ends of the inner circumference of the outer sleeve 1. By applying external force from the outer circumference of the bearing (pressing the entire bearing into the bearing seat hole in an interference fit), the outer circumference of the bearing outer sleeve 1 is subjected to force, causing the inner hole of the outer sleeve 1 to shrink, thereby forming an interference fit between the outer circumference of the sealing ring 6 and the inner circumference of the outer sleeve 1, thus realizing the assembly between the sealing ring 6 and the outer sleeve 1.

[0037] In one embodiment, the second assembly method between the sealing ring 6 and the outer sleeve 1 is as follows: the outer periphery of the sealing ring 6 and the inner periphery of the outer sleeve 1 are subjected to an interference fit. The outer diameter of the sealing ring 6 is larger than the inner diameter of the outer sleeve 1. The sealing ring 6 is pressed into the end of the inner periphery of the outer sleeve 1 by external pressure or thermal expansion and contraction, so that the outer periphery of the sealing ring 6 and the inner periphery of the outer sleeve 1 form an interference connection.

[0038] In one embodiment, the sealing ring 6 and the outer sleeve 1 are assembled in a third manner: the sealing ring 6 and the outer sleeve 1 are connected by a snap ring. That is, the sealing ring 6 can be used as an open annular snap ring structure to be engaged with the inner peripheral wall of the outer sleeve 1, thereby blocking the outer end face of the retainer 3. Alternatively, a corresponding groove can be opened in the inner peripheral wall of the outer sleeve 1 for the insertion of the sealing ring 6, so as to enhance the holding ability and achieve effective blocking of the end of the retainer 3.

[0039] In one embodiment, see Figure 4 The inner circumference of the outer sleeve 1 has stepped mounting hole sections 7 at both ends. The sealing ring 6 is assembled into the stepped mounting hole sections 7, that is, the inner hole of the outer sleeve 1 forms a three-section hole. The middle section hole is used for the installation of the cage 3 and the needle roller 4, and the stepped mounting hole sections 7 at both ends are used for the installation of the sealing ring 6. The axial position of the sealing ring 6 is positioned inside the outer sleeve 1 to ensure the accurate axial installation of the sealing ring 6 and to effectively block the cage 3. This embodiment combines the assembly methods one and two described above between the sealing ring 6 and the outer sleeve 1 for better results.

[0040] In one embodiment, see Figure 5 A tapered surface 10 with a narrowed opening can be added to the bottom of the mounting hole section 7 to enhance the bonding ability of the sealing ring 6 in the mounting hole section 7 when the sealing ring 6 is press-fitted with the mounting hole section 7, thereby improving the stability of the sealing ring 6 in the mounting hole section 7.

[0041] In one embodiment, the inner circumference of the outer sleeve 1 is manufactured by grinding. Manufacturing the outer sleeve 1 by grinding involves using annular bearing sleeve material and machining its inner and outer diameters through grinding. This process can be used to machine internal sections such as holes and steps within the outer sleeve 1, ensuring machining accuracy and improving machining efficiency.

[0042] In one embodiment, after the sealing ring 6 is installed inside the outer sleeve 1, the outer end face of the sealing ring 6 does not extend beyond the end face of the outer sleeve 1, so as to prevent the sealing ring 6 from extending beyond the one-way bearing and affecting the installation and use of the one-way bearing.

[0043] In one embodiment, the outermost end of the inner periphery of the outer sleeve 1 has a flare 8 to guide the sealing ring 6 from the outside of the outer sleeve 1 axially toward the mounting hole 7, thereby improving the smoothness of the assembly of the sealing ring 6.

[0044] In one embodiment, an annular space 9 is maintained between the inner circumference of the sealing ring 6 and the outer circumference of the inner sleeve 2 to avoid contact between the inner circumference of the sealing ring 6 and the outer circumference of the inner sleeve 2, which would affect the operational stability of the bearing.

[0045] In one embodiment, the end face of the inner sleeve 2 does not exceed the end face of the outer sleeve 1, thus preventing the inner sleeve 2 from extending beyond the one-way bearing and affecting the installation and use of the one-way bearing.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A one-way clutch bearing, comprising an outer sleeve and an inner sleeve, wherein a needle roller channel is formed between the middle of the outer circumference of the inner sleeve and the middle of the inner circumference of the outer sleeve, and a cage, a plurality of needle rollers, and a plurality of spring plates arranged within the needle roller channel, wherein the plurality of spring plates are disposed at the cage, and the plurality of needle rollers are disposed within the cage aperture, characterized in that, The inner circumference of the outer sleeve has a mounting hole that extends axially to the outer side of the outer sleeve. Both ends of the inner circumference of the outer sleeve are fitted with sealing rings. The retainer is located between the sealing rings, and the inner end face of the sealing ring abuts against the axial outer end face of the retainer.

2. The one-way clutch bearing as described in claim 1, characterized in that, The outer circumference of the sealing ring and the inner circumference of the outer sleeve are fitted with a clearance. By applying an external force from the outer circumference of the bearing, the inner hole of the outer sleeve is reduced, so that the outer circumference of the sealing ring and the inner circumference of the outer sleeve form an interference fit.

3. A one-way clutch bearing as described in claim 1, characterized in that, The outer circumference of the sealing ring and the inner circumference of the outer sleeve are fitted with an interference fit. The sealing ring is pressed into the end of the inner circumference of the outer sleeve, so that the outer circumference of the sealing ring and the inner circumference of the outer sleeve form an interference connection.

4. A one-way clutch bearing as described in claim 1, characterized in that, The sealing ring and the outer sleeve are connected by a snap ring.

5. A one-way clutch bearing as described in claim 2 or 3, characterized in that, The inner circumference of the outer casing has stepped mounting holes at both ends, and the sealing ring is fitted into the stepped mounting holes.

6. A one-way clutch bearing as described in claim 5, characterized in that, The inner circumference of the outer jacket is made using a grinding process.

7. A one-way clutch bearing as described in claim 1, characterized in that, After the sealing ring is installed inside the outer sleeve, the outer end face of the sealing ring does not extend beyond the end face of the outer sleeve.

8. A one-way clutch bearing as described in claim 1, characterized in that, The outermost edge of the inner circumference of the outer garment has a flared opening.

9. A one-way clutch bearing as described in claim 1, characterized in that, An annular space is maintained between the inner circumference of the sealing ring and the outer circumference of the inner sleeve.

10. A one-way clutch bearing as described in claim 1, characterized in that, The end face of the inner sleeve does not exceed the end face of the outer sleeve.

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