roller clutch

Abstract

The utility model provides a roller type clutch relates to the clutch field, including the inner race, and the outer ring of the inner race, there are a plurality of recesses in the inner race periphery, the recess middle is the narrowest, the narrowest place linearly widens to both sides, still include two rollers that set in the recess, two rollers are at both sides of the narrowest place, and the roller cannot pass from the narrowest place, and each roller is equipped with the setting in the inner race push structure, and the push structure pushes and shoves the roller to move to the narrowest place, makes the inner race and the outer ring form the self -locking state under the wedge -tight effect of two rollers, still include the separating rod that enters the narrowest area of each recess from the outer ring axis, and the separating rod can push and shoves two rollers to move to the recess both sides in reverse, and the self -locking state of the inner race and the outer ring is cancelled.

Description

Technical Field

[0001] This utility model relates to the field of clutches, and more particularly to roller clutches. Background Technology

[0002] A roller clutch is a mechanical device that transmits or separates power by wedging rollers within a wedge-shaped groove. Its inner ring is typically connected to the input shaft to transmit power, while the outer ring is connected to the output shaft to receive or transmit torque. This type of clutch is mainly divided into two categories: one-way overrunning clutches and two-way controllable overrunning clutches. In equipment with limited space and high transmission efficiency requirements, two-way clutches have significant advantages due to their compact structure, flexible two-way switching, and excellent torque control performance. The working mechanism of a one-way overrunning clutch is as follows: when the inner ring rotates counterclockwise, friction drives the rollers to roll towards the narrow end of the wedge-shaped groove and wed the inner and outer rings, causing the outer ring to rotate synchronously and transmit power. If the inner ring rotates in the opposite direction (clockwise) or the outer ring rotates faster than the inner ring, the rollers move towards the wide end of the wedge-shaped groove, disengaging the power and allowing the outer ring to freely overrun. However, this structure only enables one-way power control and cannot support reverse power transmission. The bidirectional controllable overrunning clutch adopts a symmetrical wedge groove design to ensure that the rollers can be wedged tightly in both forward and reverse directions to transmit bidirectional power. Its inner ring (star wheel) is embedded with a shift fork to forcibly separate a specific side roller to control the switching between forward and reverse directions. However, although this structure can achieve bidirectional or unidirectional power transmission, it has the inherent defect of not being able to interrupt power at the same time. Utility Model Content

[0003] The purpose of this invention is to provide a roller clutch to solve the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0005] A roller clutch includes an inner ring and an outer ring that surrounds the inner ring. The outer periphery of the inner ring has multiple grooves, which are narrowest in the middle and widen linearly to both sides. The clutch also includes two rollers disposed in the grooves. The two rollers are located on both sides of the narrowest point and cannot pass through the narrowest point. Each roller is equipped with a pushing structure disposed in the inner ring. The pushing structure pushes the roller to move towards the narrowest point, so that the inner ring and the outer ring form a self-locking state under the wedging action of the two rollers.

[0006] It also includes a separating rod that enters the narrowest area of ​​each groove from the outer ring axis. The separating rod can push the two rollers in the opposite direction to move them to both sides of the groove, releasing the self-locking state of the inner and outer rings.

[0007] Preferably, the pusher structure includes an extension groove provided at the end of the groove, the extension groove having only one opening communicating with the groove, a pusher rod inserted into the extension groove, and a spring installed at the end of the extension groove, the spring pushing the pusher rod to contact the roller.

[0008] Preferably, the inner ring axis is a channel, and a rod groove for constraining the movement of the separation rod is provided between the channel and each groove.

[0009] Preferably, the part of the separating rod that pushes the two rollers is a rigid structure with a triangular cross-section.

[0010] Preferably, the two rollers come into contact with each other when they move to the narrowest point.

[0011] Preferably, there is a tiny gap between the outer ring region of the inner ring and the inner ring region of the outer ring for rotation.

[0012] The beneficial effects of this utility model are:

[0013] 1. In this utility model, the inner ring is equipped with grooves evenly distributed around the center to counteract the rollers. Through the elastic force of the spring and the push rod, the rollers are pushed towards the narrow end of the grooves, ensuring that the rollers are in contact with the inner and outer rings in the initial state, thereby achieving bidirectional wedging and self-locking of the inner and outer rings.

[0014] 2. In this utility model, a separation rod is provided in the middle of the grooves that are equidistant from each other at the center, that is, between two adjacent rollers. The separation rod is used to forcibly separate the opposing rollers, that is, to push them from the narrow end of the wedge groove to the wide end, thereby realizing the function of power disengagement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a roller clutch in the unlocked state.

[0016] Figure 2 for Figure 1 The diagram shows the split configuration of a roller clutch.

[0017] Figure 3 for Figure 1 The cross-sectional view of the roller clutch shown.

[0018] Figure 4 for Figure 1 The diagram shows the structure of a roller clutch in its self-locking state.

[0019] Reference numerals: 1. Inner ring; 2. Outer ring; 3. Groove; 4. First roller; 5. Second roller; 6. Channel; 7. Separator rod; 8. First push rod; 9. First spring; 10. Second push rod; 11. Second spring. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0023] Example 1

[0024] This embodiment proposes a roller clutch; please refer to [link / reference]. Figures 1-4 The roller clutch includes an inner ring 1 and an outer ring 2 that fits around the inner ring 1 and whose own axis is completely coincident with the axis of the inner ring 1. There is a shaft at the axis of the inner ring 1, which passes through the outer ring 2 and extends outward. There are three equally spaced grooves 3 on the outer ring surface of the inner ring 1. The groove 3 is the narrowest in the middle and widens linearly to both sides from the narrowest point.

[0025] Please continue reading. Figures 1-4 The groove 3 contains two rollers, namely a first roller 4 and a second roller 5. The first roller 4 and the second roller 5 are located on opposite sides of the narrowest point, and neither roller 4 nor roller 5 can pass through the narrowest point. For further explanation, please refer to [link to relevant documentation]. Figure 4 The narrowest point of groove 3 is 'a', the cross-sectional diameter of the two rollers is 'b', and the groove end of groove 3 is 'c', where a < b < c. Please refer to [link / reference]. Figure 3 Each roller is equipped with a pushing structure located in the inner ring 1. This pushing structure includes an extension groove at the end of the groove 3. A first push rod 8, which engages with the first roller 4, and a second push rod 10, which engages with the second roller 5, are inserted into the extension groove. Additionally, a first spring 9 for pushing the first push rod 8 and a second spring 11 for pushing the second push rod 10 are installed at the end of the extension groove. The springs push the push rods, causing them to contact the corresponding rollers, thereby pushing the two rollers towards the narrowest point of the groove 3 and bringing them into contact. This allows the inner ring 1 and outer ring 2 to form a bidirectional self-locking state under the wedging action of the two rollers, achieving power transmission. In this embodiment, the inner ring 1 and outer ring 2 can be self-locked or separated. Please refer to [link to previous text]. Figure 1There is also a channel 6 at the axis of the inner ring 1. A rod groove is provided between the channel 6 and each groove 3. There is a separation rod 7 in the rod groove. The separation rod 7 can enter the narrowest area of ​​the groove 3 and push the two contacting rollers to move to both sides of the groove 3, thereby releasing the self-locking state of the inner ring 1 and the outer ring 2.

[0026] In this embodiment, the separating rod 7 is connected to an external power mechanism, allowing it to move within the rod groove and control the position of the two rollers in the groove 3. It should also be noted in this embodiment that the part of the separating rod 7 that pushes the two rollers is a rigid structure with a triangular cross-section.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A roller clutch, comprising an inner ring and an outer ring surrounding the inner ring, characterized in that: The inner ring has multiple grooves around its perimeter, with the narrowest point being the center. The grooves then widen linearly towards both sides. The inner ring also includes two rollers positioned within the grooves, located on either side of the narrowest point. The rollers cannot pass through the narrowest point. Each roller is equipped with a pushing structure within the inner ring. This pushing structure pushes the roller towards the narrowest point, causing the inner and outer rings to form a self-locking state under the wedging action of the two rollers. The inner ring also includes a separating rod that enters the narrowest area of ​​each groove from the inner ring's axis. This separating rod can push the two rollers in the opposite direction, moving them towards the sides of the groove to release the self-locking state of the inner and outer rings.

2. The roller clutch according to claim 1, characterized in that: The pusher structure includes an extension groove at the end of the groove, which has only one opening communicating with the groove. A pusher rod is inserted into the extension groove, and a spring is installed at the end of the extension groove. The spring pushes the pusher rod, causing the pusher rod to contact the roller.

3. The roller clutch according to claim 2, characterized in that: The inner ring axis is a channel, and between the channel and each groove is a rod groove for constraining the movement of the separation rod.

4. The roller clutch according to claim 3, characterized in that: The part of the separator that pushes the two rollers is a rigid structure with a triangular cross-section.

5. The roller clutch according to claim 1, characterized in that: The two rollers come into contact with each other when they move to the narrowest point.

6. The roller clutch according to claim 1, characterized in that: There is a gap between the inner and outer rings for rotation.

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