Conical disc friction type overrun clutch with torque protection function

Abstract

The invention relates to the technical field of mechanical transmission parts, and discloses a conical disc friction type overrun clutch with a torque protection function. The conical disc friction type overrun clutch comprises a first inner ring and a first outer ring, the first inner ring penetrates through the first outer ring, and at least one first conical sleeve is arranged between the first inner ring and the first outer ring; a safety pin is arranged between the first conical sleeve and the first inner ring, and the number of the safety pin is at least one. A torsional spring I is arranged between the conical sleeve I and the inner ring I; a protective sleeve is arranged on the outer cylindrical face of the first conical sleeve. The torque protection device is simple in structure and low in manufacturing cost, and has a torque protection function by combining stable small torque.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission components, and in particular to a cone-disc friction overrunning clutch with torque protection function. Background Technology

[0002] Currently, the overrunning clutch is one of the basic components in mechanical transmission systems. It is a clutch that automatically engages or disengages according to the speed or rotation direction of the driving and driven components. It is widely used in packaging machinery, food machinery, light industrial machinery, agricultural machinery, metallurgy and mining, petrochemicals, machine tools, automobiles, weaponry, aviation and power plants.

[0003] Existing overrunning clutches are mainly classified into three types: ratchet type, roller type, and wedge type. Racket-type overrunning clutches have a simple structure, are easy to manufacture, and have high reliability, but they have a certain free-spinning angle, and engagement can cause impact and noise. They are generally suitable for applications with small speed differences. Roller and wedge-type overrunning clutches offer smooth, impact-free engagement and a free-spinning section, but their structures are complex and their manufacturing costs are high.

[0004] Existing torque protection technologies all rely on separate safety couplings, which are not only structurally complex but also costly to manufacture. Therefore, it is necessary to provide a cone-disc friction overrunning clutch with torque protection function to solve the aforementioned technical problems. Summary of the Invention

[0005] To address the technical problems raised in the background art, the present invention provides a cone-disc friction overrunning clutch with torque protection function.

[0006] The present invention is achieved by the following technical solution: a cone-disc friction overrunning clutch with torque protection function, comprising: an inner ring and an outer ring, wherein the inner ring passes through the outer ring, and a conical sleeve is provided between the inner ring and the outer ring, wherein the number of the conical sleeve is at least one. A safety pin is provided between the conical sleeve and the inner ring, and there is at least one safety pin. A torsion spring is provided between the conical sleeve and the inner ring. A protective sleeve is provided on the outer cylindrical surface of the conical sleeve.

[0007] As a further improvement to the above solution, one end of the conical sleeve is an outer conical surface, and one end of the outer ring is an inner conical surface. The outer conical surface of the conical sleeve and the inner conical surface of the outer ring are adapted to each other.

[0008] As a further improvement to the above scheme, the outer conical surface of the first conical sleeve and the inner conical surface of the first outer ring have the same cone angle, and the half cone angle is greater than the friction angle.

[0009] As a further improvement to the above solution, the inner hole of the conical sleeve is cylindrical, the outer circle of the inner ring is cylindrical, and the inner hole of the conical sleeve is adapted to the outer circle of the inner ring.

[0010] As a further improvement to the above solution, the inner ring is provided with a first pin hole, which is adapted to the safety pin.

[0011] As a further improvement to the above solution, the conical sleeve is provided with a spiral groove, which is adapted to the safety pin.

[0012] As a further improvement to the above scheme, the two ends of the torsion spring are connected to the inner ring and the conical sleeve, respectively.

[0013] As a further improvement to the above solution, the safety pin is a hollow safety pin with a groove.

[0014] As a further improvement to the above solution, a magnet is provided on the protective sleeve, and a retaining ring for shafts is fitted on the conical sleeve.

[0015] As a further improvement to the above solution, the inner walls of both ends of the outer ring are provided with bearings, the inner ring passes through the two bearings, a retaining ring for the hole is installed inside the outer ring, the retaining ring is in contact with the corresponding bearing, a retaining ring for the shaft is installed on the outer ring, and the inner ring passes through the retaining ring for the shaft and is adapted to the retaining ring for the shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention has a simple structure, low manufacturing cost, and combines stable low torque, giving it a torque protection function. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of Embodiment 1 of the present invention; Figure 3 This is a structural diagram of the inner ring of Embodiment 1 of the present invention; Figure 4 This is a diagram of the outer ring structure of Embodiment 1 of the present invention; Figure 5 This is a structural diagram of a torsion spring according to Embodiment 1 of the present invention; Figure 6 This is a structural diagram of the conical sleeve according to Embodiment 1 of the present invention; Figure 7 This is a structural diagram of the protective sleeve according to Embodiment 1 of the present invention; Figure 8 This is a schematic diagram showing the engagement of the conical sleeve and the safety pin during operation in Embodiment 1 of the present invention; Figure 9This is a schematic diagram of the overrun cone sleeve and safety pin in Embodiment 1 of the present invention. Figure 10 This is a schematic diagram of the safety pin during torque protection in Embodiment 1 of the present invention; Figure 11 This is an exploded view of Embodiment 2 of the present invention; Figure 12 This is a structural diagram of the inner ring of Embodiment 2 of the present invention; Figure 13 This is a diagram of the outer ring structure of Embodiment 2 of the present invention; Figure 14 This is a structural diagram of the torsion spring according to Embodiment 2 of the present invention; Figure 15 This is a structural diagram of the conical sleeve according to Embodiment 2 of the present invention; Figure 16 This is a schematic diagram showing the engagement of the conical sleeve and the safety pin during operation in Embodiment 2 of the present invention; Figure 17 This is a schematic diagram of the overrun cone sleeve and safety pin in Embodiment 2 of the present invention; Figure 18 This is a schematic diagram of the safety pin during torque protection in Embodiment 2 of the present invention.

[0018] Explanation of key symbols: 1. Shaft retaining ring 1; 2. Bearing 1; 3. Hole retaining ring 1; 4. Torsion spring 1; 41. Support leg 1; 42. Support leg 2; 5. Conical sleeve 1; 51. Inner hole 1; 52. Outer conical surface 1; 53. Helical groove 1; 531. Left helical surface 1; 532. Right helical surface 1; 54. Inner hole 2; 55. Cylindrical surface 1; 6. Inner ring 1; 61. Hole; 62. Cylindrical surface 2; 63. First pin hole; 7. Outer ring 1; 71. Inner conical surface 1; 8. Safety pin; 81. Lower half; 82. Upper half; 9. Sheath; 91, Hole; 92, Inner Hole Four; 10, Magnet One; 11, Shaft Retaining Ring Two; 4A, Torsion Spring Two; 41, Support Leg A; 42, Support Leg B; 5A, Conical Sleeve Two; 51A, Inner Hole Five; 52A, Inner Conical Surface Two; 53A, Spiral Groove Two; 531A, Left Spiral Surface One; 532A, Right Spiral Surface One; 54A, Inner Hole Six; 6A, Inner Ring Two; 62A, Outer Conical Surface Two; 7A, Outer Ring Two; 71A, Hole Two; 72A, Pin Hole Two; 73A, Inner Hole Seven; 12, Magnet Two. Detailed Implementation

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] Example 1: Please combine Figure 2 (Exploded view of the present invention) The cone disc friction overrunning clutch with torque protection function in this embodiment includes: shaft retaining ring 1, bearing 2, hole retaining ring 3, torsion spring 4, conical sleeve 5, inner ring 6, outer ring 7, safety pin 8, protective sleeve 9, magnet 10, and shaft retaining ring 2 11. Please combine Figure 3 (Structural diagram of inner ring 6) The outer circle of the inner ring 6 is provided with a hole 61 for fixing the torsion spring 4 and a first pin hole 63 for fixing the safety pin 8. The cylindrical surface 62 of the inner ring 6 is adapted to the inner hole 51 of the conical sleeve 5.

[0021] Please combine Figure 4 (Structural diagram of outer ring 7) The inner hole of outer ring 7 is provided with an inner conical surface 71, which is adapted to the outer conical surface 52 of conical sleeve 5.

[0022] Please combine Figure 5 (Structural diagram of torsion spring 4) One end support leg 42 of torsion spring 4 is adapted to the hole 61 of inner ring 6, and the other end support leg 41 of torsion spring 4 is adapted to conical sleeve 5. When torsion spring 4 is in a compressed state, it will push conical sleeve 5 to rotate to the right, so that the outer conical surface 52 of conical sleeve 5 is in contact with the inner conical surface 71 of outer ring 7.

[0023] Please combine Figure 6 (Structural diagram of conical sleeve 5) The right end of the conical sleeve 5 is an outer conical surface 52, which is adapted to the inner conical surface 71 of the outer ring 7. The outer wall of the left end of the conical sleeve 5 is provided with an inner hole 51, which is used to fix one end support leg 41 of the torsion spring 4. The inner hole 54 of the conical sleeve 5 is adapted to the cylindrical surface 62 of the inner ring 6. The cylindrical surface 55 of the conical sleeve 5 is adapted to the inner hole 92 of the protective sleeve 9. The surface of the conical sleeve 5 is provided with a spiral groove 53, which is adapted to the safety pin 8.

[0024] Please combine Figure 7 (Structural diagram of protective sleeve 9) The outer circle of the protective sleeve 9 is provided with at least one hole 91 for fixing magnet 10, and the inner hole 92 of the protective sleeve 9 is adapted to the cylindrical surface 55 of the conical sleeve 5.

[0025] Please see Figure 8 This first embodiment is the application mode of this device. When the overrunning clutch is working in the driving state, the safety pin 8 is pressed against the right spiral surface 532 of the spiral groove 53 of the conical sleeve 5. The conical sleeve 5 moves to the right spiral and squeezes the outer ring 7. The conical sleeve 5 and the outer ring 7 form a friction self-locking and transmit torque.

[0026] Please see Figure 9 This first embodiment is an application of the device. When the overrunning clutch is in the overrunning state, the rotational speed of the outer ring 7 is higher than that of the inner ring 6. The safety pin 8 is pressed against the left spiral surface 531 of the spiral groove 53 of the conical sleeve 5. The conical sleeve 5 has a tendency to move to the left spiral. The conical 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.

[0027] Please see Figure 10 This first embodiment is an application mode of the device. When the overrunning clutch is working in the driving state and the transmitted torque exceeds the limit of the clutch, the safety pin 8 is sheared at the mating surface of the inner ring-6 and the conical sleeve-5. The lower half 82 of the safety pin 8 is fixed on the inner ring-6, and the upper half 81 is attracted by the magnet-10 on the protective sleeve 9. The safety pin 8 is separated, and the self-locking of the conical mating surface of the conical sleeve-5 and the outer ring-7 is released, thus completing the torque protection.

[0028] Example 2 (see Example 2) Figures 11 to 18 ): Figure 11 A cone-disc friction overrunning clutch with torque protection function is provided. The overrunning clutch includes: a shaft retaining ring 1, a bearing 2, a bore retaining ring 3, a torsion spring 4A, a conical sleeve 5A, an inner ring 6A, an outer ring 7A, a safety pin 8, and a magnet 12. The structures of the torsion spring 4A, the conical sleeve 5A, the inner ring 6A, and the outer ring 7A are as follows, while the other components are still the same as those in Embodiment 1, without changing their structural form.

[0029] Please combine Figure 12 (Structural diagram of inner ring 6A), the outer circle of inner ring 6A has an outer conical surface 62A, which is adapted to the inner conical surface 52A of conical sleeve 5A; Please combine Figure 13 (Structural diagram of outer ring 2 7A) The outer circle of outer ring 2 7A is provided with a hole 2 71A for fixing torsion spring 2 4A and a pin hole 2 72A for fixing safety pin 8. The inner hole 73A of outer ring 2 7A is adapted to the outer circle of conical sleeve 2 5A. Please combine Figure 14 (Structural diagram of torsion spring 4A) One end support B42 of torsion spring 4A is adapted to the hole 71A of outer ring 7A, and the other end support A41 is adapted to conical sleeve 5A. When torsion spring 4A is in a compressed state, it pushes conical sleeve 5A to rotate to the right, so that the inner conical surface 52 of conical sleeve 5A is in contact with the outer conical surface 62A of inner ring 6A.

[0030] Please combine Figure 15(Structural diagram of conical sleeve 2 5A) The right end of the conical sleeve 2 5A is an inner conical surface 2 52A, which is adapted to the outer conical surface 2 62A of the inner ring 2 6A. An inner hole 51A is opened on the left end face of the conical sleeve 2 5A for fixing one end support leg A41 of the torsion spring 2 4A. The inner hole 6 54A of the conical sleeve 2 5A is adapted to the cylindrical surface of the outer ring 2 7A. A spiral groove 2 53A is provided on the surface of the conical sleeve 2 5A. The upper half of the spiral groove 2 53A cooperates with the safety pin 8, and the lower half of the spiral groove 2 53A cooperates with the magnet 2 12.

[0031] Please see Figure 16 This second embodiment is the application mode of this device. When the overrunning clutch is working in the driving state, the safety pin 8 is pressed against the right spiral surface 532A of the spiral groove 53A of the conical sleeve 5A. The conical sleeve 5A moves to the right spiral and squeezes the outer ring 7A. The conical sleeve 5A and the outer ring 7A form a friction self-locking, which transmits torque.

[0032] Please see Figure 17 This second embodiment is an application mode of the device. When the overrunning clutch is working in the overrunning state, the speed of the outer ring 7A is higher than that of the inner ring 6A. The safety pin 8 is pressed against the left spiral surface 531A of the spiral groove 53A of the conical sleeve 5A. The conical sleeve 5A has a tendency to move to the left spiral. The conical sleeve 5A cannot squeeze the outer ring 7A, the self-locking is released, and the torque transmission between the outer ring 7A and the inner ring 6A is disconnected.

[0033] Please see Figure 18 This second embodiment illustrates the application of this device. When the overrunning clutch is in driving mode and the transmitted torque exceeds the clutch limit, the safety pin 8 is sheared at the mating surface of the outer ring 7A and the conical sleeve 5A. The upper half 82 of the safety pin 8 is fixed on the outer ring 7A, and the lower half 81 is attracted by the magnet 12. The safety pin 8 separates, and the self-locking of the conical mating surface between the conical sleeve 5A and the inner ring 6A is released, thus completing the torque protection.

[0034] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A cone-disc friction overrunning clutch with torque protection function, characterized in that, include: Inner ring 1 and outer ring 1, the inner ring 1 passing through the outer ring 1, a conical sleeve 1 is provided between the inner ring 1 and the outer ring 1, and the number of conical sleeves 1 is at least one; A safety pin is provided between the conical sleeve and the inner ring, and there is at least one safety pin. A torsion spring is provided between the conical sleeve and the inner ring. A protective sleeve is provided on the outer cylindrical surface of the conical sleeve.

2. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, One end of the conical sleeve is an outer conical surface, and one end of the outer ring is an inner conical surface. The outer conical surface of the conical sleeve and the inner conical surface of the outer ring are adapted to each other.

3. The cone-disc friction overrunning clutch with torque protection function as described in claim 2, characterized in that, The outer conical surface of the conical sleeve and the inner conical surface of the outer ring have the same cone angle, and the half cone angle is greater than the friction angle.

4. The cone-disc friction overrunning clutch with torque protection function as described in claim 3, characterized in that, The inner hole of the conical sleeve is cylindrical, and the outer circle of the inner ring is cylindrical. The inner hole of the conical sleeve and the outer circle of the inner ring are adapted to each other.

5. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, The inner ring is provided with a first pin hole, which is adapted to the safety pin.

6. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, The conical sleeve is provided with a spiral groove, which is adapted to the safety pin.

7. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, The two ends of the torsion spring are connected to the inner ring and the conical sleeve, respectively.

8. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, The safety pin is a hollow safety pin with a groove.

9. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, A magnet is provided on the protective sleeve, and a retaining ring for shaft is fitted on the conical sleeve.

10. The cone-disc friction overrunning clutch with torque protection function as described in claim 1, characterized in that, The inner walls of both ends of the outer ring are provided with bearings. The inner ring passes through two bearings. A retaining ring for a hole is installed inside the outer ring. The retaining ring is in contact with the corresponding bearing. A retaining ring for a shaft is installed on the outer ring. The inner ring passes through the retaining ring for a shaft and is adapted to the retaining ring for a shaft.

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