Overrunning clutch capable of achieving bidirectional control

Abstract

Provided in the present invention is an overrunning clutch capable of achieving bidirectional control. The overrunning clutch comprises a bidirectional clutch mounting sleeve, wherein universal needle rollers are arranged in the bidirectional clutch mounting sleeve in a circumferential direction, two end face pawls are arranged at each of two ends of each universal needle roller, a short pawl connecting rod is connected between the end face pawls on inner sides of the two ends of the universal needle roller, and a long pawl connecting rod is connected between the end face pawls on outer sides of the two ends of the universal needle roller. By using the principle of a needle roller-type overrunning clutch, the function of controlling forward and reverse directions is realized by means of controlling the positions of the needle rollers in the clutch. According to use requirements, the function of locking or overrunning in different directions can be realized by means of controlling the pawls in different directions, or the function of controlling simultaneous bidirectional overrunning or bidirectional locking is realized by means of controlling the two pawls at the same time.

Description

A bidirectionally controlled overrunning clutch Technical Field

[0001] The present invention relates to the field of overrunning clutches, in particular to an overrunning clutch capable of bidirectional control. Background Art

[0002] In daily production, life, and work, overrunning clutches that require bidirectional rotational control are frequently used. Conventional overrunning clutches can only limit overrunning in one direction and prevent reverse rotation, or control one-way rotation and bidirectional overrunning in the same direction. Applications requiring bidirectional control of the central shaft require more complex designs.

[0003] Therefore, there is an urgent need for an overrunning clutch that can be controlled in both directions and can achieve bidirectional control with a simple structure.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to provide an overrunning clutch that can be controlled in both directions to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides an overrunning clutch that can be controlled in both directions, including a two-way clutch mounting sleeve, wherein a universal needle roller is circumferentially installed in the two-way clutch mounting sleeve, and two end face toggle plates are respectively provided at both ends of the universal needle roller, a short toggle plate connecting rod is connected between the end face toggle plates on the inner sides of the two ends, and a long toggle plate connecting rod is connected between the end face toggle plates on the outer sides of the two ends.

[0008] Preferably, a sliding groove is circumferentially provided on the inner side wall of the two-way clutch mounting sleeve, and the universal needle roller can be slidably limited in the sliding groove. The sliding groove is an arc-shaped structure, and the distance between the middle edge of the sliding groove and the center of the two-way clutch mounting sleeve is greater than the distance between the two side edges of the sliding groove and the center of the two-way clutch mounting sleeve.

[0009] Preferably, a needle roller retaining spring is provided on the outside of the universal needle roller.

[0010] Preferably, a toggle piece return spring is provided between the toggle piece short connecting rod and the toggle piece long connecting rod.

[0011] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0012] The present invention provides an overrunning clutch that can be controlled in both directions, including a two-way clutch mounting sleeve, a universal needle roller is circumferentially installed in the two-way clutch mounting sleeve, and two end face toggle plates are respectively provided at both ends of the universal needle roller, a short toggle plate connecting rod is connected between the end face toggle plates on the inner sides of both ends, and a long toggle plate connecting rod is connected between the end face toggle plates on the outer sides of both ends; the principle of the needle roller overrunning clutch is utilized to realize the function of controllable forward and reverse directions by controlling the position of the needle roller in the clutch, and according to the needs of use, the locking or overrunning functions in different directions can be realized by controlling the toggle plates in different directions, or the control functions of simultaneous two-way overrunning or two-way locking can be realized by controlling the two toggle plates at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] FIG1 is an exploded view of an overrunning clutch capable of bidirectional control provided by the present invention;

[0015] FIG2 is a diagram showing a bidirectional locking state of an overrunning clutch capable of bidirectional control provided by the present invention;

[0016] FIG3 is a bidirectional overrunning state diagram of an overrunning clutch capable of bidirectional control provided by the present invention;

[0017] FIG4 is a diagram showing a one-way overrunning state of an overrunning clutch capable of bidirectional control provided by the present invention. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The purpose of the present invention is to provide an overrunning clutch capable of bidirectional control, so as to solve the problems existing in the prior art.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1:

[0022] This embodiment provides an overrunning clutch that can be controlled in both directions, as shown in Figure 1, including a two-way clutch mounting sleeve 1, a universal needle roller 2 is installed circumferentially inside the two-way clutch mounting sleeve 1, and two end face toggle plates 3 are respectively provided at both ends of the universal needle roller 2. A short toggle plate connecting rod 5 is connected between the end face toggle plates 3 on the inner sides of the two ends, and a long toggle plate connecting rod 4 is connected between the end face toggle plates 3 on the outer sides of the two ends.

[0023] Specifically, a sliding groove is circumferentially opened on the inner wall of the two-way clutch mounting sleeve 1, and the universal needle roller 2 can be slidably limited in the sliding groove. The sliding groove is an arc-shaped structure, and the distance between the middle edge of the sliding groove and the center of the two-way clutch mounting sleeve 1 is greater than the distance between the two side edges of the sliding groove and the center of the two-way clutch mounting sleeve 1.

[0024] Furthermore, a needle roller retaining spring 6 is provided on the outside of the universal needle roller 2 .

[0025] Furthermore, a toggle piece return spring 7 is provided between the toggle piece short connecting rod 5 and the toggle piece long connecting rod 4 .

[0026] The present invention provides a bidirectional overrunning clutch, as shown in Figures 2 and 3. In the default state, because the clutch's end-face shift plates 3 have shift plate return springs 7, the universal needle rollers 2 controlled by both sets of shift plates are constantly subjected to the driving force from the ramps on either side of the chute. Needle roller retaining springs 6 are designed along the circumference of the needle rollers. These retaining springs engage the retaining grooves at either end of the needle rollers and maintain thrust from both sides of the chute. All needle rollers are in an interference fit with the center shaft 8 and the bidirectional clutch mounting sleeve 1. Therefore, in the default state, the center shaft cannot rotate in either direction within the clutch, resulting in a bidirectionally locked state. Conversely, when the two shift plates / rods are simultaneously controlled to rotate in opposite directions, the two shift plates simultaneously bring the two sets of needle rollers into the middle of the chute. At this point, all needle rollers are in a sliding or clearance fit with the center shaft and clutch housing. Consequently, the center shaft and clutch are in an overrunning state in both directions, allowing free rotation in either direction.

[0027] Furthermore, as shown in Figure 4, several groups of sleds are evenly distributed around the central axis of the clutch inner bore, each containing needle rollers mounted in the same direction. The maximum diameter of the sled is slightly larger than the sum of the diameters of the central axis and the two needle rollers passing through it, ensuring free rotation in the overrunning state. Symmetrical slopes, tangential to the maximum circle of the needle roller sled and tapering toward the center, are designed on both sides of the sled. Each sled houses two parallel needle rollers, one on each side. Utilizing the wedge-locking principle, when the needle rollers slide onto the slope, they enter an interference fit with the clutch housing and the central axis, eliminating the space between the central axis and the clutch housing for free rotation. By moving the lever that controls one group of needle rollers, the group is rotated to the larger diameter of the sled. At this point, the group of needle rollers, the central axis, and the clutch housing form a sliding or clearance fit, resulting in an overrunning fit between the central axis and the clutch housing, allowing rotation in that direction. The reverse direction also applies.

[0028] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An overrunning clutch capable of bidirectional control, characterized in that: It comprises a two-way clutch mounting sleeve, in which a universal needle roller is circumferentially installed, and two end face toggle plates are respectively arranged at both ends of the universal needle roller, a short toggle plate connecting rod is connected between the end face toggle plates on the inner sides of both ends, and a long toggle plate connecting rod is connected between the end face toggle plates on the outer sides of both ends.

2. The bidirectionally controllable overrunning clutch according to claim 1, characterized in that: The inner wall of the two-way clutch mounting sleeve is circumferentially provided with a sliding groove, and the universal roller needle can be slidably limited in the sliding groove. The sliding groove is an arc-shaped structure, and the distance between the middle edge of the sliding groove and the center of the two-way clutch mounting sleeve is greater than the distance between the two side edges of the sliding groove and the center of the two-way clutch mounting sleeve.

3. The bidirectionally controllable overrunning clutch according to claim 1, characterized in that: A needle roller retaining spring is arranged outside the universal needle roller.

4. The bidirectionally controllable overrunning clutch according to claim 1, characterized in that: A toggle piece return spring is provided between the toggle piece short connecting rod and the toggle piece long connecting rod.

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