Cone disc friction type overrun clutch

Abstract

The utility model relates to the technical field of overrun clutches, in particular to a conical disc friction type overrun clutch which comprises an inner ring, a bearing, an outer ring, a conical sleeve, a pin, a torsion spring and a check ring. The conical sleeves are arranged between the outer ring and the inner ring, at least one conical sleeve is arranged between the outer ring and the inner ring, at least one cylindrical pin is arranged between the conical sleeve and the inner ring, one end of the cylindrical pin is matched with a pin hole of the inner ring, the other end of the cylindrical pin is matched with a spiral groove in the conical sleeve, and a torsional spring is arranged between the conical sleeve and the inner ring. In a driving state, the conical sleeve and the conical matching surface of the outer ring form self-locking transmission torque; and in the overrunning state, self-locking of the conical sleeve and the conical matching surface of the outer ring is relieved, and separation is completed. The device is simple and compact in structure, easy to manufacture, convenient to install, low in production cost, large in torque density, small in noise and abrasion in use, long in service life, more suitable for small-space occasions, and easier to replace and maintain and serialize products.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a cone-disk friction type overrunning clutch. Background Art

[0002] The overrunning clutch is one of the basic components in the mechanical transmission system. It is a clutch that automatically engages or disengages as the speed of the master and slave parts changes or the direction of rotation changes. It is widely used in packaging machinery, food machinery, light industrial machinery, agricultural machinery, metallurgy and mining, petrochemical industry, machine tools, automobiles, weapons, aviation and power stations.

[0003] The existing overrunning clutch is mainly divided into three types: ratchet type, roller type and wedge type. The ratchet type overrunning clutch has a simple structure, is easy to manufacture and has high reliability, but has a certain idling angle, and there will be impact and noise when engaging. It is usually suitable for applications with a small speed difference. The roller type and wedge type engage smoothly without impact and idling travel section, but the structure is complex and the manufacturing cost is high. Utility Model Content

[0004] The utility model aims to provide a small torque cone-disk friction overrunning clutch which has simple structure, low manufacturing cost and stable coupling.

[0005] In order to achieve the above-mentioned object, the utility model proposes the following technical solution: a cone-disk friction overrunning clutch, comprising an outer ring (7) and an inner ring (6), at least one cone sleeve (5) is arranged between the outer ring (7) and the inner ring (6), at least one cylindrical pin (8) is arranged between the cone sleeve (5) and the inner ring (6), and a torsion spring (4) is arranged between the cone sleeve (5) and the inner ring (6).

[0006] Furthermore, in the utility model, one end of the tapered sleeve (5) is an outer tapered surface, one end of the outer ring (7) is an inner tapered surface, and the outer tapered surface of the tapered sleeve (5) matches the inner tapered surface of the outer ring (7).

[0007] Furthermore, in the utility model, the outer conical surface of the conical sleeve (5) and the inner conical surface of the outer ring (7) have the same cone angle, and the semi-conical angle is greater than the friction angle.

[0008] Furthermore, in the present invention, the inner hole of the tapered sleeve (5) is a cylindrical surface, the outer circle of the inner ring (6) is cylindrical, and the inner hole surface of the tapered sleeve (5) matches the outer circle surface of the inner ring (6).

[0009] Furthermore, in the utility model, the pin hole of the inner ring (6) cooperates with the cylindrical pin (8).

[0010] Furthermore, in the utility model, the spiral groove of the tapered sleeve (5) cooperates with the cylindrical pin (8).

[0011] Furthermore, in the utility model, the two ends of the torsion spring (4) are respectively connected to the inner ring (6) and the tapered sleeve (5).

[0012] When the overrunning clutch is working in the driving state, the cylindrical pin is close to the right spiral surface of the spiral groove of the tapered sleeve, and the tapered sleeve moves in the right spiral to squeeze the outer ring, and the tapered sleeve and the outer ring form a friction self-locking to transmit torque. When the overrunning clutch is working in the overrunning state, the outer ring speed is higher than the inner ring speed, the cylindrical pin is close to the left spiral surface of the spiral groove of the tapered sleeve, and the tapered sleeve has a tendency to move in the left spiral. The tapered sleeve cannot squeeze the outer ring, the self-locking is released, and the outer ring and the inner ring are disconnected from the torque transmission.

[0013] Beneficial effects: The technical solution of this application has the following technical effects:

[0014] The device has a simple and compact structure, is easy to manufacture and install, has a low production cost, a high torque density, low noise during use, low wear and tear, and a long service life. It is more suitable for small space occasions, and is easier to replace and maintain as well as to serialize products.

[0015] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0016] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0018] Figure 1 This is an exploded view of the first embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of the inner ring of the first embodiment of the utility model;

[0020] Figure 3 This is a structural diagram of the outer ring of Embodiment 1 of the present utility model;

[0021] Figure 4 This is a structural diagram of a torsion spring according to Embodiment 1 of the present utility model;

[0022] Figure 5 This is a structural diagram of a cone sleeve according to Embodiment 1 of the present utility model;

[0023] Figure 6 This is a schematic diagram of the cooperation between the tapered sleeve and the cylindrical pin during operation of the first embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the cooperation between the tapered sleeve and the cylindrical pin during overtaking in the first embodiment of the utility model;

[0025] Figure 8 This is an exploded view of the second embodiment of the present utility model;

[0026] Fig. 9 This is a structural diagram of the inner ring of the second embodiment of the utility model;

[0027] Fig.10 This is a structural diagram of the outer ring of the second embodiment of the utility model;

[0028] Fig.11 This is a structural diagram of a torsion spring according to Embodiment 2 of the present utility model;

[0029] Fig.12 This is a structural diagram of a cone sleeve according to Embodiment 2 of the present utility model;

[0030] Fig.13 This is a schematic diagram of the cooperation between the tapered sleeve and the cylindrical pin during operation of the second embodiment of the utility model;

[0031] Fig.14 This is a schematic diagram of the cooperation between the tapered sleeve and the cylindrical pin during overtaking in the second embodiment of the utility model.

[0032] In the figure, the meanings of the various reference numerals are as follows: 1. retaining ring for shaft; 2. bearing; 3. retaining ring for hole; 4. torsion spring; 5. tapered sleeve; 6. inner ring; 7. outer ring; 8. cylindrical pin; 41. support leg two; 42. support leg one; 51. hole two; 52. outer conical surface two; 53. spiral groove; 531. left spiral surface; 532. right spiral surface; 54. inner hole one; 55. inner conical surface one; 61. hole one; 62. cylindrical surface; 63. pin hole one; 64. outer conical surface one; 71. inner conical surface two; 72. inner hole two; 73. pin hole two; 74. hole three. DETAILED DESCRIPTION

[0033] In order to better understand the technical content of the utility model, specific embodiments are cited and described as follows in conjunction with the accompanying drawings. In this disclosure, various aspects of the utility model are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the accompanying drawings. The embodiments of the present disclosure are not necessarily defined to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the utility model are not limited to any implementation method. In addition, some aspects disclosed in the utility model can be used alone, or used in any appropriate combination with other aspects disclosed in the utility model.

[0034] Example 1

[0035] See also Figure 1-Figure 7 The utility model provides a cone-disk friction overrunning clutch. Figure 1 It is an exploded view of a cone-disk friction overrunning clutch, which includes a shaft retaining ring 1, a bearing 2, a hole retaining ring 3, a torsion spring 4, a tapered sleeve 5, an inner ring 6, an outer ring 7, and a cylindrical pin 8. Figure 2 The figure shows the structure of the inner ring 6, on the outer circle of which there is a hole 61 for fixing the torsion spring 4 and a pin hole 63 for fixing the cylindrical pin 8, and the cylindrical surface 62 cooperates with the inner hole of the tapered sleeve 5. Figure 3 It is a structural diagram of the outer ring 7, and its inner hole has an inner conical surface 71, which matches the outer conical surface of the conical sleeve 5. Figure 4 The figure shows the structure of the torsion spring 4. The leg 1 42 at one end of the torsion spring cooperates with the hole 1 61 of the inner ring 6, and the leg 2 41 at the other end cooperates with the tapered sleeve 5. The torsion spring is in a compressed state, pushing the tapered sleeve 5 to rotate right, so that the outer conical surface of the tapered sleeve 5 is always in contact with the inner conical surface 2 71 of the outer ring 7. Figure 5 As shown in the figure is the structural diagram of the tapered sleeve 5, the right end of which is an outer tapered surface 2 52, which cooperates with the inner tapered surface 2 71 of the outer ring 7, and there is a hole 2 51 on the left end surface of the tapered sleeve 5 for fixing one end leg 1 41 of the torsion spring 4, an inner hole 1 54 of the tapered sleeve 5 cooperates with the cylindrical surface 62 of the inner ring 6, and there is a spiral groove 53 on the surface of the tapered sleeve 5, which cooperates with the cylindrical pin 8.

[0036] See also Figure 6 This embodiment is an application mode of the present device. When the overrunning clutch works in the driving state, the cylindrical pin 8 is pressed against the right spiral surface 532 of the spiral groove 53 of the tapered sleeve 5, and the tapered sleeve 5 moves in a right spiral direction to squeeze the outer ring 7. The tapered sleeve 5 and the outer ring 7 form a friction self-locking to transmit torque.

[0037] See also Figure 7This embodiment is an application mode of the device. When the overrunning clutch works in the overrunning state, the rotation speed of the outer ring 7 is higher than that of the inner ring 6. The cylindrical pin 8 is close to the left spiral surface 531 of the spiral groove 53 of the tapered sleeve 5. The tapered sleeve 5 has a tendency to move in a left spiral direction. The tapered sleeve 5 cannot squeeze the outer ring 7, the self-locking is released, and the torque transmission between the outer ring 7 and the inner ring 6 is disconnected.

[0038] Example 2

[0039] See also Figure 8-Figure 10 The utility model provides a cone-disk friction overrunning clutch. Figure 8 The utility model relates to a cone-disk friction overrunning clutch, which comprises a shaft retaining ring 1, a bearing 2, a hole retaining ring 3, a torsion spring 4, a tapered sleeve 5, an inner ring 6, an outer ring 7 and a cylindrical pin 8. Fig. 9 The figure shows the structure of the inner ring 6, which has an outer conical surface 64 on its outer circle, and the outer conical surface 64 matches the inner conical surface of the tapered sleeve 5. The outer circle has a hole 61 for fixing the torsion spring 4 and a pin hole 63 for fixing the cylindrical pin 8, and the cylindrical surface 62 matches the inner hole of the tapered sleeve 5. Fig.10 It is a structural diagram of the outer ring 7, on the outer circle of which there is a hole 3 74 for fixing the torsion spring 4 and a pin hole 2 3 for fixing the cylindrical pin 8, and the inner hole 2 72 cooperates with the outer circle of the tapered sleeve 5. Fig.11 The figure shows the structure of the torsion spring 4. The leg 42 at one end of the torsion spring cooperates with the inner hole 72 of the outer ring 7, and the leg 41 at the other end cooperates with the tapered sleeve 5. The torsion spring is in a compressed state, pushing the tapered sleeve 5 to rotate right, so that the inner conical surface of the tapered sleeve 5 is always in contact with the inner conical surface 61 of the inner ring 6. Fig.12 As shown in the figure is the structural diagram of the tapered sleeve 5, the right end of which is an inner tapered surface 55, the inner tapered surface 55 cooperates with the outer tapered surface 64 of the inner ring 6, the left end surface of the tapered sleeve 5 has a hole 51, which is used to fix the leg 2 41 at one end of the torsion spring 4, the inner hole 54 of the tapered sleeve 5 cooperates with the cylindrical surface of the outer ring 7, and the surface of the tapered sleeve 5 has a spiral groove 53, which cooperates with the cylindrical pin 8.

[0040] See also Fig.13 This embodiment is an application mode of the present device. When the overrunning clutch works in the driving state, the cylindrical pin 8 is pressed against the right spiral surface 532 of the spiral groove 53 of the tapered sleeve 5, and the tapered sleeve 5 moves in a right spiral direction to squeeze the outer ring 7. The tapered sleeve 5 and the outer ring 7 form a friction self-locking to transmit torque.

[0041] See also Fig.14 This embodiment is an application mode of the device. When the overrunning clutch works in the overrunning state, the rotation speed of the outer ring 7 is higher than that of the inner ring 6. The cylindrical pin 8 is close to the left spiral surface 531 of the spiral groove 53 of the tapered sleeve 5. The tapered sleeve 5 has a tendency to move in a left spiral direction. The tapered sleeve 5 cannot squeeze the outer ring 7, the self-locking is released, and the torque transmission between the outer ring 7 and the inner ring 6 is disconnected.

[0042] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A cone-disk friction overrunning clutch, characterized in that: The invention comprises an outer ring (7) and an inner ring (6), at least one conical sleeve (5) is arranged between the outer ring (7) and the inner ring (6), at least one cylindrical pin (8) is arranged between the conical sleeve (5) and the inner ring (6), and a torsion spring (4) is arranged between the conical sleeve (5) and the inner ring (6).

2. A cone-disk friction overrunning clutch according to claim 1, characterized in that: One end of the tapered sleeve (5) is an outer tapered surface, one end of the outer ring (7) is an inner tapered surface, and the outer tapered surface of the tapered sleeve (5) matches the inner tapered surface of the outer ring (7).

3. The cone-disk friction overrunning clutch according to claim 1, characterized in that: The outer conical surface of the conical sleeve (5) and the inner conical surface of the outer ring (7) have the same cone angle, and the semi-conical angle is greater than the friction angle.

4. A cone-disk friction overrunning clutch according to claim 1, characterized in that: The inner hole of the tapered sleeve (5) is a cylindrical surface, the outer circle of the inner ring (6) is cylindrical, and the inner hole surface of the tapered sleeve (5) matches the outer circle surface of the inner ring (6).

5. The cone-disk friction overrunning clutch according to claim 1, characterized in that: The pin hole of the inner ring (6) cooperates with the cylindrical pin (8).

6. The cone-disk friction overrunning clutch according to claim 1, characterized in that: The spiral groove of the tapered sleeve (5) cooperates with the cylindrical pin (8).

7. The cone-disk friction overrunning clutch according to claim 1, characterized in that: The two ends of the torsion spring (4) are respectively connected to the inner ring (6) and the conical sleeve (5).

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