阅读说明：本技术 一种可实现分离不接触的单向离合器 (One-way clutch capable of realizing separation and non-contact ) 是由 姚长水 于 2020-02-06 设计创作，主要内容包括：本发明提供一种可实现分离不接触的单向离合器,包括内圈,内圈设有第一圆柱部和第二圆柱部,第二圆柱部外表面设有螺纹；旋转锁紧部,螺接在第二圆柱部上,旋转锁紧部的外表面设有磁铁；第一定位部,套接在第一圆柱部上；第二定位部,套接在第二圆柱部上；外圈,与内圈同轴设置；外圈设置有第一安装孔和第二安装孔,第一安装孔套接在第一圆柱部上并与其形成环状间隙；第一安装孔的直径小于第二圆柱部和第一定位部的外径；第二安装孔与旋转锁紧部形成环状间隙；第二安装孔内设有外圈磁铁。采用本发明的单向离合器,可实现全速分离状态下内圈和外圈之间无滚柱或楔块等部件,内圈和外圈之间分离且无摩擦,使用寿命长,降低了对材料的性能要求。(The invention provides a one-way clutch capable of realizing separation and non-contact, which comprises an inner ring, wherein the inner ring is provided with a first cylindrical part and a second cylindrical part, and the outer surface of the second cylindrical part is provided with threads; the rotary locking part is in threaded connection with the second cylindrical part, and a magnet is arranged on the outer surface of the rotary locking part; a first positioning part sleeved on the first cylindrical part; the second positioning part is sleeved on the second cylindrical part; the outer ring is coaxially arranged with the inner ring; the outer ring is provided with a first mounting hole and a second mounting hole, and the first mounting hole is sleeved on the first cylindrical part and forms an annular gap with the first cylindrical part; the diameter of the first mounting hole is smaller than the outer diameters of the second cylindrical part and the first positioning part; the second mounting hole and the rotary locking part form an annular gap; an outer ring magnet is arranged in the second mounting hole. The one-way clutch can realize no parts such as a roller or a wedge and the like between the inner ring and the outer ring in a full-speed separation state, the inner ring and the outer ring are separated without friction, the service life is long, and the performance requirement on materials is reduced.)

1. A one-way clutch capable of realizing separation and non-contact is characterized by comprising,

the outer surface of the inner ring (10) is provided with threads;

a rotational locking portion (20), an inner circumferential surface of the rotational locking portion (20) being screwed on an outer circumference of the inner ring (10) by a screw; the outer surface of the rotary locking part (20) is provided with a plurality of magnets (21);

a first positioning portion (40) provided on the inner ring (10);

a second positioning portion (50) provided on the inner race (10), the rotation locking portion (20) being provided between the first positioning portion (40) and the second positioning portion (50);

the outer ring (30) is sleeved on the outer surface of the inner ring (10); a stepped hole is formed in the axial center of the outer ring (30), the stepped hole comprises a first mounting hole (31) with a smaller diameter and a second mounting hole (32) with a larger diameter, and the first mounting hole (31) is sleeved on the outer surface of the inner ring (10) and forms an annular gap with the inner ring (10); the second mounting hole (32) and the rotation locking part (20) form an annular gap; a plurality of outer ring magnets (33) matched with the magnets (21) are arranged on the inner surface of the second mounting hole (32);

the outer surface of the inner ring (10) is provided with a stepped cylinder, the stepped cylinder comprises a first cylindrical part (12) with a smaller diameter and a second cylindrical part (13) with a larger diameter, and the outer surface of the second cylindrical part (13) is provided with threads;

the first positioning part (40) is arranged at one end of the first cylindrical part (12) extending outwards;

the second positioning part (50) is arranged at one end of the second cylindrical part (13) extending outwards;

the rotary locking part (20) is screwed on the outer surface of the second cylindrical part (13); the first mounting hole (31) is sleeved on the first cylindrical part (12) and forms an annular gap with the first cylindrical part (12); the diameter of the first mounting hole (31) is smaller than the outer diameters of the second cylindrical portion (13) and the first positioning portion (40), and the length of the first cylindrical portion (12) is larger than the depth of the first mounting hole (31);

at least one of two planes of the outer ring (30) opposite to the first positioning part (40) is a rough surface;

the magnet (21) and the outer ring magnet (33) are bar magnets, and the longitudinal direction of the magnet (21) and the outer ring magnet (33) is parallel to the central axis of the rotation locking part (20).

2. The separation-enabling contactless one-way clutch according to claim 1, characterized in that magnets (21) are evenly distributed circumferentially along an outer surface of the rotation locking portion (20); and the outer ring magnets (33) are uniformly distributed along the circumferential direction of the inner surface of the second mounting hole (32).

3. The one-way clutch capable of achieving separation and non-contact according to claim 1, characterized in that an inner hole (11) is formed in the axial center of the inner ring (10), and the inner hole (11) is provided with an inner key groove.

4. The one-way clutch capable of achieving separation and non-contact according to claim 1, characterized in that the outer surface of the outer ring (30) is provided with an outer keyway.

Technical Field

The invention belongs to a one-way clutch, and particularly relates to a one-way clutch capable of realizing separation and non-contact.

Background

The function of the one-way clutch is to make some element rotate only in a certain direction and lock in the other direction, and the existing one-way clutch is mainly divided into two types of roller type and wedge type. When the existing one-way clutch is used, when the inner ring and the outer ring generate a rotation speed difference, the roller or the wedge block and the inner ring and the outer ring generate friction heating because the roller or the wedge block and the inner ring and the outer ring are in line contact, so that the roller or the wedge block is seriously abraded; for the roller type one-way clutch, even when the inner ring and the outer ring are separated and rotate, the rollers are always in contact with the inner ring and the outer ring, and the problems of friction heating and abrasion exist all the time in the use process, so that the abrasion failure of the rollers or wedge blocks is caused, the requirement on the material of the one-way clutch is high, and the service life of the one-way clutch is shortened.

Disclosure of Invention

The invention aims to provide a one-way clutch capable of realizing separation and non-contact, so as to solve the problems that a roller or a wedge block of the existing one-way clutch is easy to wear and lose efficacy and the service life of a product is low, and realize the effect of prolonging the service life of the one-way clutch.

In order to achieve the purpose, the invention adopts the technical scheme that:

a one-way clutch capable of realizing separation and non-contact comprises,

the outer surface of the inner ring is provided with threads;

the rotary locking part is screwed on the inner ring; the outer surface of the rotary locking part is provided with a plurality of magnets;

a first positioning portion provided on the inner ring;

the second positioning part is arranged on the inner ring, and the rotary locking part is arranged between the first positioning part and the second positioning part;

the outer ring is sleeved on the outer surface of the inner ring; a stepped hole is formed in the axial center of the outer ring and comprises a first mounting hole with a smaller diameter and a second mounting hole with a larger diameter, and the first mounting hole is sleeved on the outer surface of the inner ring and forms an annular gap with the inner ring; the second mounting hole and the rotation locking part form an annular gap; and a plurality of outer ring magnets matched with the magnets are arranged on the inner surface of the second mounting hole.

Furthermore, a stepped cylinder is arranged on the outer surface of the inner ring, the stepped cylinder comprises a first cylindrical part with a smaller diameter and a second cylindrical part with a larger diameter, and threads are arranged on the outer surface of the second cylindrical part;

the first positioning part is arranged at one end of the first cylindrical part, which extends outwards;

the second positioning part is arranged at one end of the second cylindrical part extending outwards;

the rotary locking part is in threaded connection with the outer surface of the second cylindrical part; the first mounting hole is sleeved on the first cylindrical part and forms an annular gap with the first cylindrical part; the diameter of the first mounting hole is smaller than the outer diameters of the second cylindrical portion and the first positioning portion, and the length of the first cylindrical portion is larger than the depth of the first mounting hole.

Further, at least one of two planes of the outer ring facing the first positioning portion is a rough surface.

Further, the magnet and the outer ring magnet are bar magnets, and the length directions of the magnet and the outer ring magnet are parallel to the central axis of the rotation locking part.

Further, the magnets are uniformly distributed along the circumferential direction of the outer surface of the rotary locking part; and the outer ring magnets are uniformly distributed along the circumferential direction of the inner surface of the second mounting hole.

Further, an inner hole is formed in the axial center of the inner ring, and an inner key groove is formed in the inner hole.

Further, the outer surface of the outer ring is provided with an outer key groove.

Compared with the prior art, the embodiment of the invention at least has the following beneficial effects:

1. the embodiment of the invention comprises that the outer surface of the inner ring is provided with threads; the rotary locking part is in threaded connection with the inner ring and is provided with a magnet; the inner ring is provided with a first positioning part and a second positioning part; the outer surface of the inner ring is sleeved with the outer ring, a first mounting hole of the outer ring is sleeved on the outer surface of the inner ring, and an annular gap is formed between the second mounting hole and the rotary locking part; and the technical scheme that the outer ring magnet is arranged in the second mounting hole can generate a pulse magnetic field when a rotation speed difference is generated between the magnet and the outer ring magnet, so that the rotary locking part can do reciprocating linear motion along the inner ring, the locking and unlocking of the inner ring and the outer ring are realized, the problems of friction heating, low service life and poor reliability of a roller or a wedge block of the conventional one-way clutch and the inner ring and the outer ring are solved, and the inner ring and the outer ring are not in contact and have no friction when the one-way bearing is in a separated state, so that the service life is longer, and the performance requirement on materials is reduced.

2. According to the embodiment of the invention, the technical scheme that the first cylindrical part and the second cylindrical part are arranged on the inner ring, the diameter of the first mounting hole is smaller than the outer diameter of the second cylindrical part and the first positioning part, and the length of the first cylindrical part is larger than the depth of the first mounting hole is adopted, so that the movement range of the first mounting hole is limited between the second cylindrical part and the first positioning part, the one-way bearing is in a separated state, the outer ring and the inner ring respectively rotate freely, the outer ring and the inner ring are completely separated and are not in contact, and the one-way bearing is compact in structure, low in manufacturing cost and easy to install, machine and manufacture.

3. The embodiment of the invention comprises the technical scheme that at least one of two planes of the outer ring opposite to the first positioning part is a rough surface, and the like, so that when the inner ring and the outer ring are locked, the friction force between the outer ring and the first positioning part can be increased, and the locking force between the outer ring and the first positioning part can be further increased.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic structural view of the inner ring, the first positioning portion and the second positioning portion;

FIG. 5 is a schematic structural view of the outer ring;

FIG. 6 is a diagram showing the positional relationship between the magnets and the outer ring magnets;

illustration of the drawings:

10. an inner ring; 11. an inner bore; 12. a first cylindrical portion; 13. a second cylindrical portion; 20. a rotation locking part; 21. a magnet; 30. an outer ring; 31. a first mounting hole; 32. a second mounting hole; 33. an outer ring magnet; 34. a first location plane; 40. a first positioning portion; 41. a first location plane; 50. a second positioning portion.

Detailed Description

In order to make the technical means, objectives and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.

The magnetic field pulse type one-way bearing of the invention, as shown in figures 1-6, comprises,

the outer surface of the inner ring 10 is provided with threads; specifically, in this embodiment, a through inner hole 11 is provided at the axial center of the inner ring 10, as shown in fig. 3, and an inner key groove is formed in the inner hole 11, generally, the inner ring 10 is connected to a driving shaft or a driven shaft by a key connection; a stepped cylinder is processed on the outer surface of the inner ring 10, the stepped cylinder comprises a first cylindrical part 12 with a smaller diameter and a second cylindrical part 13 with a larger diameter, and threads are arranged on the outer surface of the second cylindrical part 13;

a rotation locking part 20 screwed on the inner ring 10; as shown in fig. 4, a plurality of magnets 21 are circumferentially provided on an outer surface of the rotation locking portion 20. Specifically, the rotary locking part 20 is screwed on the outer surface of the second cylindrical part 13; preferably, the magnet 21 is a bar magnet, and the length direction of the magnet 21 is parallel to the central axis of the rotation locking part 20, and the magnets 21 are uniformly distributed along the circumferential direction of the outer surface of the rotation locking part 20.

The first positioning portion 40 is disposed on the inner ring 10, and specifically, the first positioning portion 40 is fixedly sleeved on the first cylindrical portion 12.

The second positioning portion 50 is disposed on the inner ring 10, and specifically, is fixedly sleeved on one end of the second cylindrical portion 13 extending outward, and the second positioning portion 50 is used for limiting the position of the rotational locking portion 20 on the second cylindrical portion 13.

The outer ring 30 is sleeved on the outer surface of the inner ring 10, and the outer ring 30 can rotate relative to the inner ring 10; as shown in fig. 5, a through stepped hole is provided at the axial center of the outer ring 30; the central axis of the stepped hole is parallel to the central axis of the inner ring 10; the stepped hole comprises a first mounting hole 31 with a smaller diameter and a second mounting hole 32 with a larger diameter, the first mounting hole 31 is sleeved on the outer surface of the inner ring 10 and forms an annular gap with the inner ring 10, specifically, in the embodiment, the first mounting hole 31 is sleeved on the first cylindrical part 12 and forms an annular gap with the first cylindrical part 12, so that when the one-way clutch is in a separated state, the outer ring 10 and the inner ring 30 are not in contact, thereby having no friction, reducing the performance requirement on materials, and having a longer service life; the diameter of the first mounting hole 31 is smaller than the outer diameters of the second cylindrical portion 13 and the first positioning portion 40, so that the range of motion of the first mounting hole 31 is limited between the second cylindrical portion 13 and the first positioning portion 40; the second mounting hole 32 forms an annular gap with the rotation locking part 20; a plurality of outer ring magnets 33 matched with the magnets 21 are circumferentially arranged on the inner surface of the second mounting hole 32. The outer surface of the outer ring 30 is provided with an outer key groove, and generally, the outer ring 30 is connected with a driving shaft or a driven shaft in a key connection mode.

The length of the first cylindrical portion 12 is greater than the depth of the first mounting hole 31, so that the one-way bearing of the present invention is in a separated state, and the outer ring 30 and the inner ring 10 are free to rotate, respectively.

Preferably, as shown in fig. 4 and 6, the outer ring magnet 33 is a bar magnet, the length direction of the outer ring magnet 33 is parallel to the central axis of the second mounting hole 32, and the outer ring magnet 33 is uniformly distributed along the circumferential direction of the inner surface of the second mounting hole 32;

specifically, the N pole of the magnet 21 may be disposed opposite to the S pole of the outer ring magnet 33; the N pole of the magnet 21 may be disposed to face the N-stage of the outer ring magnet 33.

As shown in fig. 1 and 5, the outer ring 30 includes a first positioning plane 34, the first positioning portion 40 includes a second positioning plane 41, the first positioning plane 34 is opposite to the second positioning plane 41, and when the inner ring 10 and the outer ring 30 are locked, the first positioning plane 34 contacts the second positioning plane 41.

Preferably, at least one of the first positioning plane 34 and the second positioning plane 41 is a rough surface or a friction plate, or at least one of the two contact surfaces of the rotation locking portion 20 and the outer ring 30 is a rough surface or a friction plate, so that when the inner ring 10 and the outer ring 30 and the rotation locking portion 20 and the outer ring 30 are locked, the friction force between the locking contact surfaces is increased, and the locking force between the parts is increased.

Preferably, at least one of the first positioning plane 34 and the second positioning plane 41 is a rough surface or is provided with a friction plate, and at least one of the two contact surfaces of the rotational locking portion 20 and the outer ring 30 is a rough surface or is provided with a friction plate when the rotational locking portion 20 and the outer ring 30 are locked, so that the friction force between the inner ring 10 and the outer ring 30 and between the rotational locking portion 20 and the outer ring 30 is increased, the locking force between parts is increased, and the locking is more rapid.

The working principle of the invention is as follows:

let the inner ring 10 rotate at N_{Inner part}The outer ring 30 has a rotational speed of N_{Outer cover}The rotation speed of the rotation locking part 20 is N_{Locking device}。

The screw joint between the rotation locking portion 20 and the second cylindrical portion 13 is provided with lubricating oil, which reduces the friction coefficient between the rotation locking portion 20 and the second cylindrical portion 13.

Suppose that the inner hole 11 of the inner ring 10 is internally connected with a driving shaft, and the outer ring of the outer ring 30 is connected with a driven shaft, and suppose that N is N_{Outer cover}>N_{Inner part}When the one-way bearing is in a separated state, the inner ring 10 and the outer ring 30 do not contact and rotate respectively; when the rotational speeds of the inner ring 10 and the outer ring 30 are equal, N is_{Outer cover} = N_{Inner part}No pulse magnetic field exists between the outer ring 30 and the rotation locking part 20, and the rotation locking part 20 only rotates under the drive of the second cylindrical part 13;

when N is present_{Outer cover}<N_{Inner part}In time, the magnet 21 and the outer ring magnet 33A rotational speed difference is generated between the magnet 21 and the outer ring magnet 33, an alternating acting force is generated between the magnet 21 and the outer ring magnet 33, when the alternating acting force is increased to overcome the static friction force between the rotation locking part 20 and the threads of the inner ring 10, the rotation locking part 20 is slowed down relative to the inner ring 10 under the action of the alternating acting force, and at the moment, N is generated_{Outer cover}<N_{Locking device}<N_{Inner part}And further, the rotation locking portion 20 moves on the inner ring 10 towards the first positioning portion 40 until the outer ring 30 is pushed to be locked with the inner ring 10, and after locking, the inner ring 10 drives the rotation locking portion 20 and the outer ring 30 to synchronously rotate, so that the driving shaft drives the driven shaft to synchronously rotate.

When the speed of rotation of the driven shaft increases again, i.e. N_{Outer cover}>N_{Inner part}When the alternating force increases to overcome the static friction between the threads of the rotational locking part 20 and the inner ring 10, the rotational locking part 20 rotates faster relative to the inner ring 10 under the action of the alternating force, and at this time, N is equal to N_{Outer cover}>N_{Locking device}>N_{Inner part}Further, the rotation locking portion 20 is moved on the inner ring 10 in a direction to approach the stopper portion 15, and the inner ring 10 and the outer ring 30 are unlocked, so that the transmission of the driving shaft to the driven shaft is stopped.

The words of front, back, left, right, up and down, etc. in the present invention are only for convenience of describing the structure and do not form a limitation on the technical solution. The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.