阅读说明：本技术 一种中轴联接负载的离心式离合器 (Centrifugal clutch with middle shaft connected with load ) 是由 熊鹏生 林剑荣 陶欢 王辉 陈俊宏 丘国强 陈淋 陈源 杨銮 丰飞 董金进 李 于 2019-09-29 设计创作，主要内容包括：本发明涉及一种中轴联接负载的离心式离合器,包含输入转子、输出转子以及离合机构,离合机构包含与输入转子同步转动的离心组件、以及与输入转子同步转动的摩擦接合组件；输入转子以相对输出转子能够转动的方式套接于输出转子的外周,输出转子的外周沿轴向具有离合安装部和转子支承部,摩擦接合组件安装在离合安装部上且具有一离合腔室,输入转子具有以能够相对输出转子和摩擦接合组件转动的方式套接于摩擦接合组件上的离合安装部、以及套接于转子支承部外周的转子安装部；离心组件安装在离合安装部的外周、且收纳于离合腔室内；离心组件在转动过程中能够沿径向活动以接合或脱离摩擦接合组件以切换输出转子的运动状态。(The invention relates to a centrifugal clutch with a middle shaft connected with a load, which comprises an input rotor, an output rotor and a clutch mechanism, wherein the clutch mechanism comprises a centrifugal component and a friction joint component, wherein the centrifugal component and the input rotor synchronously rotate; the input rotor is sleeved on the periphery of the output rotor in a manner of being capable of rotating relative to the output rotor, the periphery of the output rotor is provided with a clutch installation part and a rotor supporting part along the axial direction, the friction joint assembly is installed on the clutch installation part and is provided with a clutch cavity, the input rotor is provided with a clutch installation part sleeved on the friction joint assembly in a manner of being capable of rotating relative to the output rotor and the friction joint assembly, and a rotor installation part sleeved on the periphery of the rotor supporting part; the centrifugal assembly is arranged on the periphery of the clutch mounting part and is accommodated in the clutch cavity; the centrifugal assembly is radially movable during rotation to engage and disengage the frictional engagement assembly to switch the state of motion of the output rotor.)

1. A centrifugal clutch with a load connected with a central shaft comprises an input rotor (1), an output rotor (2) and a clutch mechanism (3), wherein the clutch mechanism (3) comprises a centrifugal assembly (35) rotating synchronously with the input rotor (1) and a friction joint assembly (31) rotating synchronously with the output rotor (2);

it is characterized in that the preparation method is characterized in that,

the input rotor (1) is sleeved on the periphery of the output rotor (2) in a manner of rotating relative to the output rotor (2), the periphery of the output rotor (2) is provided with a clutch fixing part (21) and a rotor supporting part (22) along the axial direction, the friction joint component (31) is arranged on the clutch fixing part (21) and is provided with a clutch chamber (34),

the input rotor (1) is provided with a clutch mounting part (111) which is sleeved on the friction joint assembly (31) in a manner of being capable of rotating relative to the output rotor (2) and the friction joint assembly (31) and a rotor mounting part (121) which is sleeved on the periphery of the rotor supporting part (22) along the axial direction; the centrifugal assembly (35) is mounted on the periphery of the clutch mounting part (111) and is accommodated in the clutch chamber (34);

the centrifugal assembly (35) is radially movable during rotation to engage or disengage the frictional engagement assembly (31) to switch the state of motion of the output rotor (2).

2. A centrifugal clutch having a bottom bracket coupled to a load according to claim 1, the input rotor (1) comprises a power input part (12) and a connecting sleeve (11) which is provided with the clutch fixing part (21) and is used for connecting the power input part (12) and a centrifugal component (35), the connecting sleeve (11) is axially fixed on the friction joint component (31) through a first bearing component (4), the power input member (12) is rotatably supported to the rotor support portion (22) by a second bearing assembly, and two ends of the power input part (12) in the axial direction respectively abut against the inner ring of the first bearing assembly (4) and the outer ring of the second bearing assembly so as to fix the connecting sleeve (11) and the power input part (12) relative to the output rotor (2) in the axial direction.

3. A centre shaft coupled load centrifugal clutch according to claim 2, in which the connecting sleeve (11) has a clutch mounting portion (111) and a first key connecting portion (112) in the axial direction, the inner periphery of the power input member (12) has a second key connecting portion (122) and a rotor support portion (22) in the axial direction, the second key connecting portion (122) being adapted to the first key connecting portion (112) to enable the connecting sleeve (11) and the power input member (12) to rotate synchronously.

4. Center shaft load coupling centrifugal clutch according to claim 3, characterized in that the friction joint assembly (31) comprises a first support plate (32), a second support plate (33) and a clutch linkage (36) axially sandwiched between the first support plate (32) and the second support plate (33); centrifugal chambers located on the inner circumferential side of the clutch linkage (36) and the outer circumferential side of the output rotor (2) are interposed between the first support plate (32) and the second support plate (33).

5. The center shaft coupling load centrifugal clutch according to claim 4, wherein the first bearing assembly (4) comprises a first bearing (41) and a second bearing (42), and the first support plate (32) and the second support plate (33) are sleeved on the periphery of the connecting sleeve (11) through the first bearing (41) and the second bearing (42) respectively to fix the connecting sleeve (11) in the radial direction; an installation gap for the connecting sleeve (11) to pass through along the axial direction is formed between the second supporting plate (33) and the output rotor (2).

6. A centre shaft coupled load centrifugal clutch according to claim 5, in which the inner circumference of the connecting sleeve (11) is clearance fitted with the outer circumference of the output rotor (2).

7. A centre shaft coupled load centrifugal clutch according to claim 5, characterized in that a shoulder on the outer ring of the first bearing (41) remote from the second bearing (42) abuts on the first support plate (32), a shoulder on the inner ring of the first bearing (41) near the second bearing (42) abuts on the connection sleeve (11), a shoulder on the outer ring of the second bearing (42) remote from the first bearing (41) abuts on the second support plate (33), a shoulder on the inner ring of the second bearing (42) near the first bearing (41) abuts on the connection sleeve (11); one end of the power input member (12) in the axial direction abuts against an inner ring of the second bearing (42).

8. A centre shaft coupled load centrifugal clutch according to claim 7, wherein the clutch mounting (111) has axially a first bearing mounting (111A), a second bearing mounting (111B) and a thrower mounting (111C) sandwiched between the first bearing mounting (111A) and the second bearing mounting (111B), the centrifugal assembly (35) comprising throwers (351) mounted at circumferentially equal intervals on the thrower mounting (111C).

9. A centre shaft coupled load centrifugal clutch according to claim 7, in which the second bearing assembly consists of a third bearing (5), the shoulder of the outer race of the third bearing (5) abutting on the inner circumference of the power input (12) and the shoulder of the inner race of the third bearing (5) abutting on the outer circumference of the output rotor (2).

10. The center shaft-coupled load centrifugal clutch according to claim 1, wherein the output rotor (2) has a clutch fixing portion (21) at one end in the axial direction, a rotor support portion (22) at the other end, and a gap rotating portion (24) interposed between the clutch fixing portion (21) and the rotor support portion (22); the radial dimension of the rotor supporting part (22) is smaller than that of the gap rotating part (24) so that a shaft shoulder on the inner ring of the third bearing (5) close to one end of the first bearing assembly (4) abuts against the rotor supporting part (22); the difference between the radial dimensions of the clearance rotating part (24) and the rotor supporting part (22) is smaller than the R-angle radius of the shaft shoulder of the third bearing (5) so that the third bearing (5) can perform slight play along the axial direction when being installed.

Technical Field

The invention belongs to the technical field of centrifugal clutches, and particularly relates to a centrifugal clutch with a middle shaft connected with a load.

Background

A centrifugal clutch is a clutch that relies on centrifugal force generated by a centrifugal body to achieve automatic disengagement or engagement. The working principle is as follows: the rotor at the middle shaft is connected with power input, the rotor sleeved on the periphery of the rotor at the middle shaft is connected with the load end, the rotor at the middle shaft drives the throwing block to rotate to generate centrifugal force, the throwing block is connected with the rotor at the load end under the action of the centrifugal force, and the torque of the rotor at the middle shaft is transmitted to the rotor at the load end under the action of friction force.

However, in the case of a scene with high rotating speed and light weight (such as an unmanned aerial vehicle), the output end of the motor is connected to the rotor at the middle shaft, and the clutch cannot be made too large due to the requirement of light weight, so the diameter of the rotor at the middle shaft is limited, and at this time, the motor connected to the rotor at the middle shaft cannot meet the large torque required by high rotating speed, so that the motor is easily damaged. In view of this problem, the inventors have proposed the present application.

Disclosure of Invention

In order to solve the problems, the invention provides a centrifugal clutch with a middle shaft connected with a load, wherein a rotor positioned at the middle shaft is used as an output rotor of power, and a rotor sleeved on the periphery of the output rotor is used as an input rotor of the power, so that the shaft diameter of a motor for connecting the input rotor of the power can be enlarged, and the aim of meeting the requirement of larger torque is fulfilled.

The invention is realized in such a way that a centrifugal clutch with a load connected with a middle shaft comprises an input rotor, an output rotor and a clutch mechanism, wherein the clutch mechanism comprises a centrifugal component rotating synchronously with the input rotor and a friction joint component rotating synchronously with the output rotor; the input rotor is sleeved on the periphery of the output rotor in a rotatable mode relative to the output rotor, the periphery of the output rotor is provided with a clutch fixing part and a rotor supporting part along the axial direction, the friction joint component is installed on the clutch fixing part and is provided with a clutch chamber, and the input rotor is provided with a clutch installation part which is sleeved on the friction joint component in a rotatable mode relative to the output rotor and the friction joint component and a rotor installation part which is sleeved on the periphery of the rotor supporting part along the axial direction; the centrifugal assembly is arranged on the periphery of the clutch mounting part and is accommodated in the clutch chamber; the centrifugal assembly is radially movable during rotation to engage or disengage the frictional engagement assembly to switch the state of motion of the output rotor.

Preferably, the input rotor includes a power input member, and a connecting sleeve having the clutch fixing portion and used for coupling the power input member and the centrifugal assembly, the connecting sleeve is axially fixed on the friction joint assembly through a first bearing assembly, the power input member is rotatably supported on the rotor support portion through a second bearing assembly, and two ends of the power input member in the axial direction respectively abut against an inner ring of the first bearing assembly and an outer ring of the second bearing assembly so as to axially fix the connecting sleeve and the power input member.

Preferably, the connecting sleeve has a clutch mounting portion and a first key connecting portion in the axial direction, the inner periphery of the power input member has a second key connecting portion and a rotor supporting portion in the axial direction, and the second key connecting portion is adapted to the first key connecting portion so that the connecting sleeve and the power input member can rotate synchronously.

Preferably, the friction joint assembly comprises a first support plate, a second support plate and a clutch linkage piece clamped between the first support plate and the second support plate along the axial direction; centrifugal chambers located on the inner peripheral side of the clutch linkage piece and the outer peripheral side of the output rotor are clamped between the first supporting plate and the second supporting plate.

Preferably, the first bearing assembly comprises a first bearing and a second bearing, and the first support plate and the second support plate are sleeved on the periphery of the connecting sleeve through the first bearing and the second bearing respectively; and an installation gap for the connecting sleeve to pass through along the axial direction is formed between the second supporting plate and the output rotor.

Preferably, the inner circumference of the connecting sleeve is in clearance fit with the outer circumference of the output rotor.

Preferably, a shoulder on the outer ring of the first bearing, which is far away from the second bearing, abuts against the first support plate, a shoulder on the inner ring of the first bearing, which is near to the second bearing, abuts against the connecting sleeve, a shoulder on the outer ring of the second bearing, which is far away from the first bearing, abuts against the second support plate, and a shoulder on the inner ring of the second bearing, which is near to the first bearing, abuts against the connecting sleeve; one end of the power input piece along the axial direction is abutted against the inner ring of the second bearing.

Preferably, the clutch installation portion has first bearing installation portion, second bearing installation portion and presss from both sides the flail piece installation portion between first bearing installation portion and second bearing installation portion along the axial, centrifugal component contains and installs along circumference equidistant the flail piece on the flail piece installation portion.

Preferably, one end of the output rotor along the axial direction is provided with a clutch fixing part, the other end is provided with a rotor supporting part, and the output rotor is provided with a gap rotating part clamped between the clutch fixing part and the rotor supporting part; the radial size of the rotor supporting part is smaller than that of the gap rotating part, so that a shaft shoulder on the inner ring of the third bearing close to one end of the first bearing assembly abuts against the rotor supporting part; the difference of the radius sizes of the clearance rotating part and the rotor supporting part is smaller than the R angle radius of the shaft shoulder of the third bearing, so that the third bearing can slightly shift along the axial direction when being installed.

Preferably, the second bearing assembly is constituted by a third bearing, a shoulder of an outer race of the third bearing abutting on an inner periphery of the power input member, and a shoulder of an inner race of the third bearing abutting on an outer periphery of the output rotor.

By adopting the technical scheme, the invention can obtain the following technical effects:

the centrifugal clutch with the middle shaft connected with the load provided by the invention has the advantages that the friction joint assembly forming the clutch cavity is fixedly arranged on the output rotor, the throwing block for driving the output rotor to rotate is arranged on the input rotor, the input rotor is sleeved on the periphery of the output rotor, and the throwing block moves outwards along the radial direction to be jointed with the friction joint assembly when the input rotor rotates, so that the purpose of driving the output rotor positioned at the middle shaft to rotate synchronously is achieved. The diameter of the input rotor can be increased by the mode, so that the shaft diameter of the motor connected with the input rotor can be increased, and the motor can be protected from being damaged in the case of meeting the requirements of high rotating speed and light weight.

Drawings

Fig. 1 is a schematic view of a centrifugal clutch with a load coupled to its central shaft according to the present invention.

Fig. 2 depicts a schematic of the construction of the frictional engagement assembly of the present invention.

Fig. 3 depicts a schematic of the structure of the output rotor of the present invention.

FIG. 4 depicts a schematic structural view of the frictional engagement assembly and output rotor of the present invention.

Fig. 5 depicts a schematic of the structure of the input rotor of the present invention.

Fig. 6 depicts the structure of the output rotor, the connecting sleeve and the flail block viewed from the axial direction.

Reference symbols of the drawings

1-input rotor, 11-connecting sleeve, 111-clutch mounting part, 111A-first bearing mounting part, 111B-second bearing mounting part, 111C-throwing block mounting part, 111D-lug, 111E-receiving part, 111F-sliding groove, 112-first key connecting part, 12-power input part, 121-rotor mounting part, 122-second key connecting part, 123-second dust-blocking part, 124-belt pulley connecting part, 13-flat key, 14-guide plate, 2-output rotor, 21-clutch fixing part, 22-rotor supporting part, 23-connecting shaft hole, 24-clearance rotating part, 3-clutch mechanism, 31-friction joint component, 32-first supporting plate, 321-first mounting groove, 322-second mounting groove, 33-second support plate, 331-third mounting groove, 332-first dust guard, 34-clutch chamber, 35-centrifugal assembly, 351-flail block, 36-clutch linkage, 4-first bearing assembly, 41-first bearing, 42-second bearing, 5-third bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "upper", "lower", "upper section", "lower section", "upper side", "lower side", "middle", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations and positional relationships indicated based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The structure and function of the solution of the present application will now be described in detail with reference to fig. 1 to 6.

The invention provides a centrifugal clutch with a load connected with a middle shaft, and referring to fig. 1, the clutch comprises an input rotor 1, an output rotor 2 and a clutch mechanism 3, wherein the power output end of the clutch is the output rotor 2 positioned at the middle shaft, and the axial center of the output rotor 2 is provided with a connecting shaft hole 23 extending along the axial direction and used for connecting the load. The power input end of the clutch is an input rotor 1 sleeved on the periphery of an output rotor 2, and the input rotor 1 is sleeved on the periphery of the output rotor 2 in a mode of rotating relative to the output rotor. The clutch mechanism 3 comprises a frictional engagement assembly 31 and a centrifugal assembly 35, the centrifugal assembly 35 being mounted on the input rotor 1 and being capable of synchronous rotation with the input rotor 1. Specifically, the input rotor 1 has a clutch mounting portion 111 and a rotor mounting portion 121 in the axial direction, the outer periphery of the clutch mounting portion 111 is fitted to the inner periphery of the frictional engagement element 31 so as to be rotatable with respect to the frictional engagement element 31, and the clutch mounting portion 111 is rotatable with respect to the output rotor 2 at the same time. The frictional engagement element 31 is fixedly mounted on the clutch fixing portion 21, and has a clutch chamber 34 on the outer peripheral side of the output rotor 2.

The centrifugal unit 35 is attached to the outer periphery of the clutch mounting portion 111, and the centrifugal unit 35 can be housed in the clutch chamber 34. When the input rotor 1 rotates, the centrifugal assembly 35 can move radially relative to the output rotor 2 and the friction joint assembly 31 in the rotating process, and when the rotating speed of the input rotor 1 reaches a preset rotating speed, the centrifugal assembly 35 is jointed to the friction joint assembly 31 to drive the friction joint assembly 31 to rotate, so that the output rotor 2 is driven to rotate. When the rotational speed of the input rotor 1 is less than the preset rotational speed, the centrifugal assembly 35 is disengaged from the engagement state with the frictional engagement assembly 31, so that the output rotor 2 stops rotating. That is, the output rotor 2 fitted around the inner periphery of the input rotor 1 is switched between a rotating state and a non-rotating state.

Referring to fig. 1 and 3, the present invention provides an output rotor 2 with a clutch fixing portion 21 and a rotor support portion 22 along an axial direction, and the clutch fixing portion 21 is fixed with a friction engagement assembly 31 having a clutch chamber 34. Referring to fig. 1, 2 and 3, the input rotor 1 is fitted around the outer periphery of the output rotor 2, the input rotor 1 is provided with a clutch mounting portion 111 and a rotor mounting portion 121 along the axial direction, the centrifugal unit 35 is mounted on the clutch mounting portion 111, and the centrifugal unit 35 is housed in the clutch chamber 34. According to the invention, the switching of the motion state of the output rotor 2 is realized through the structure, and the input rotor 1 is sleeved on the periphery of the output rotor 2, so that the shaft diameter of the motor for connecting the input rotor 1 and inputting power can be enlarged, a larger torque can be provided under the scene of high rotating speed and light weight, and the technical problem that the motor is damaged due to the fact that the torque cannot meet the requirement when the shaft diameter of the motor is limited and cannot be enlarged can be solved.

In one embodiment of the present invention, referring to fig. 1, the input rotor 1 includes a power input member 12 and a connecting sleeve 11. The power input member 12 has the above-mentioned rotor mounting portion 121 on the inner periphery thereof, and the connecting sleeve 11 has the clutch mounting portion 111 on the outer periphery thereof. The outer periphery of the connecting sleeve 11 is sleeved on the inner periphery of the frictional engagement assembly 31 by a first bearing assembly 4, and the connecting sleeve 11 is held stationary relative to the frictional engagement assembly 31 in the axial direction by the first bearing assembly 4, that is, the connecting sleeve 11 is held stationary relative to the output rotor 2 in the axial direction by the first bearing assembly 4. The inner periphery of the power input member 12 is sleeved on the outer periphery of the output rotor 2 through a second bearing assembly.

In one embodiment of the present invention, in conjunction with fig. 1, 2 and 4, the first bearing assembly 4 includes a first bearing 41 and a second bearing 42. The frictional engagement assembly 31 is included in a first support plate 32, a second support plate 33, and a clutch link 36, the first support plate 32 and the second support plate 33 are arranged at an interval in the axial direction, and the clutch link 36 is interposed between the first support plate 32 and the second support plate 33. A clutch chamber 34 is formed between the first support plate 32, the second support plate 33 and the clutch linkage 36. The first support plate 32 has a first mounting groove 321 and a second mounting groove 322, the first support plate 32 is axially abutted on the clutch fixing portion 21 through one end surface of the first mounting groove 321 in the axial direction, so that the friction engagement component 31 is axially fixed relative to the output rotor 2, and the first support plate 32 is sleeved on the outer peripheral surface of the clutch fixing portion 21 through the inner peripheral surface of the first mounting groove 321, so that the friction engagement component 31 is coaxially coupled with the output rotor 2. The first support plate 32 is fixedly coupled to the output rotor 2 by a fastener such as a screw or a pin. The second support plate 33 has a third mounting groove 331, the second support plate 33 is fixedly coupled with the clutch link 36 in a detachable manner, and the clutch link 36 is fixedly coupled with the first support plate 32 in a detachable manner, i.e., for fixing the clutch link 36 and the second support plate 33.

In an embodiment of the present invention, referring to fig. 1 and 5, the clutch mounting portion 111 has a first bearing mounting portion 111A, a second bearing mounting portion 111B, and a thrower mounting portion 111C interposed between the first bearing mounting portion 111A and the second bearing mounting portion 111B along the axial direction. The first bearing 41 has a first outer ring shoulder on the outer ring of the first bearing 41 and a first inner ring shoulder on the inner ring of the first bearing 41, the first outer ring shoulder being located at an end of the outer ring of the first bearing 41 remote from the second bearing 42, the first outer ring shoulder abutting on an end surface of the second mounting groove 322 in the axial direction, the first outer ring shoulder abutting on an inner peripheral surface of the second mounting groove 322 in the radial direction. The first inner ring shoulder is located at an end of the inner ring of the first bearing 41 away from the first outer ring shoulder in the axial direction, and abuts on the first bearing mounting portion 111A in the axial direction and the radial direction. The second bearing 42 has a second outer ring shoulder located on the outer ring of the second bearing 42 and a second inner ring shoulder located on the inner ring of the second bearing 42, the second outer ring shoulder being located on the outer ring of the second bearing 42 at an end remote from the first bearing 41 in the axial direction, and the second inner ring shoulder being located on the inner ring of the second bearing 42 at an end close to the first bearing 41 in the axial direction. The second outer ring shoulder in the axial direction and the radial direction abuts on the third mounting groove 331, and the second inner ring shoulder in the axial direction and the radial direction abuts on the second bearing mounting portion 111B. The radial dimension of the first bearing mounting part 111A and the second bearing mounting part 111B is smaller than that of the swinging block mounting part 111C. The first bearing 41 and the second bearing 42 respectively abut on end faces where the first bearing mounting portion 111A and the second bearing mounting portion 111B meet the dog mounting portion 111C in the axial direction. The above-described manner in which the connecting sleeve 11 is fixedly connected to the frictional engagement assembly 31 via the first bearing 41 and the second bearing 42, respectively, allows the position of the connecting sleeve 11 relative to the frictional engagement assembly 31 (i.e., the output rotor 2) to be kept fixed in the radial and axial directions.

In an embodiment of the present invention, referring to fig. 1, 4 and 5, the second supporting plate 33 has a predetermined mounting gap from the outer periphery of the output rotor 2 for the connecting sleeve 11 to pass through in the axial direction when the connecting sleeve 11 is mounted, so that the connecting sleeve 11 can be sleeved on the outer periphery of the output rotor 2 and is convenient to mount.

Preferably, the inner circumference of the connecting sleeve 11 and the outer circumference of the output rotor 2 are in clearance fit with each other in combination with fig. 1, 4 and 5, so that the rotation of the connecting sleeve 11 and the output rotor 2 will not interfere by other external forces except the linkage of the centrifugal assembly 35 and the frictional engagement assembly 31.

In one embodiment of the present invention, with reference to fig. 1, 4 and 5, the second bearing assembly is formed by a third bearing 5, and two shoulders on the outer race of the third bearing 5 abut against the rotor mounting portion 121 (i.e., the power input member 12). One end of the power input member 12 in the axial direction, which is close to the first bearing assembly 4, abuts against the inner race of the second bearing 42, which cooperates with the rotor mounting portion 121 to keep the position of the power input member 12 in the axial direction relative to the output rotor 2 fixed. It will be appreciated that the power input 12 is not in contact with the outer race of the second bearing 42, and the power input 12 is not in contact with the second support plate 33.

In an embodiment of the present invention, referring to fig. 1, 2 and 5, the second supporting plate 33 has a first dust blocking portion 332 with a radial dimension smaller than a radial dimension of an outer ring of the second bearing 42, the power input member 12 has a second dust blocking portion 123 at an end close to the second bearing 42, the second dust blocking portion 123 is located at an inner periphery of the first dust blocking portion 332, and the first dust blocking portion 332 extends in a direction of decreasing the radial dimension to decrease a distance between the second supporting plate 33 and the power input member 12 in the radial direction, so as to solve a technical problem that dust is easy to enter the second bearing 42 and the clutch chamber 34 when the distance between the second supporting plate 33 and the power input member 12 in the radial direction is too large. Preferably, a step is provided between the first dust blocking portion 332 and the first mounting groove 321, so that the first dust blocking portion 332 is in clearance fit with the second bearing 42 along the axial direction, so as to achieve the purpose that the first dust blocking portion 332 does not interfere with the rotation of the second bearing 42 during the radial extension process, and at this time, the second dust blocking portion 123 abuts against the inner ring of the second bearing 42 along the axial direction. It will be appreciated that in other embodiments, it may be possible for the second dust stop 123 to extend in a direction of increasing radial dimension to reduce the spacing between the second support plate 33 and the power input member 12 in the radial direction. At this time, it is preferable that there is a step between the second dust retaining portion 123 and the end of the power input member 12 abutting against the inner race of the second bearing 42, for the purpose of preventing the second dust retaining portion 123 from interfering with the rotation of the second bearing 42 during the radial expansion.

Preferably, a shoulder on the outer race of the third bearing 5 at an end remote from the first bearing assembly 4 abuts a first clamp fixed to the inner periphery of the power input member 12 to facilitate mounting and fixing of the third bearing 5.

In an embodiment of the present invention, referring to fig. 1, 4 and 5, one end of the output rotor 2 in the axial direction has a clutch fixing portion 21, the other end thereof in the axial direction has a rotor supporting portion 22, a gap rotating portion 24 is provided between the clutch fixing portion 21 and the rotor supporting portion 22, and the gap rotating portion 24 is in gap fit with the connecting sleeve 11. The rotor support portion 22 has a smaller dimension in the radial direction than the gap rolling portion 24 to form a step so that a shoulder on the inner race of the third bearing 5 near one end of the first bearing assembly 4 abuts on the rotor support portion 22. A shoulder on an inner ring of the third bearing 5 at an end remote from the first bearing assembly 4 abuts on an outer periphery of the rotor support portion 22 (output rotor 2), wherein an axial direction of the output rotor 2 is fixed to the output rotor 2 by a second shaft clip fixed to the outer periphery of the output rotor 2.

In an embodiment of the present invention, in conjunction with fig. 1 and 4, the difference in the radial dimension of the gap rotating portion 24 and the rotor supporting portion 22 is smaller than the R-angle radius of the shoulder of the third bearing 5, so that the third bearing 5 is allowed to make a slight play in the axial direction when mounted. Each subassembly and the part of the clutch of this application can have the error in the precision when processing, if direct with the inner circle of third bearing 5 along axial direct fixation, can lead to the inner circle and the outer lane of third bearing 5 can the drunkenness each other in the axial because of installation error. The difference between the radius of the clearance rotating part 24 and the radius of the rotor supporting part 22 is designed to be smaller than the radius of the R angle of the shoulder of the third bearing 5, so that the third bearing 5 can move slightly in the direction of the first bearing assembly 4 when being installed, so that when each component and part of the present application is designed to be processed, the output rotor 2 is used as a reference shaft, the friction joint assembly 31 and the power input member 12 are made to have a processing tolerance with the output rotor 2 as a reference, for example, after the friction joint assembly 31 and the power input member 12 are made to have a processing tolerance with the output rotor 2 as a reference, the installation error of the distance between the first bearing installation part 111A and the third bearing installation part along the axial direction is controlled within a preset lower tolerance range, and the designed step height is smaller than the R angle of the third bearing 5, so that the third bearing 5 can be adjusted along the axial direction when being installed, the third bearing 5 can not be dislocated along the axial direction due to processing and assembling errors during installation. It will be appreciated that in other embodiments the difference in radial dimensions of the gap turning portion 24 and the rotor support portion 22 can be greater than the R-angle radius of the shoulder of the third bearing 5.

It will be appreciated that in other embodiments, the second bearing assembly may be formed by a plurality of juxtaposed bearings which serve to increase the support force of the power input member 12.

In an embodiment of the present invention, referring to fig. 1 and 5, the connecting sleeve 11 has a clutch mounting portion 111 and a first key connecting portion 112 along the axial direction, the inner periphery of the power input member 12 has a second key connecting portion 122 and a rotor supporting portion 22 along the axial direction, and the second key connecting portion 122 is adapted to the first key connecting portion 112 so that the connecting sleeve 11 and the power input member 12 can rotate synchronously. Wherein, first key connecting portion 112 comprises the keyway structure, and a flat key 13 can be put into this first key connecting portion 112, and second key connecting portion 122 constitutes for along the keyway structure of axial extension, and second key connecting portion 122 is along the both ends face sliding fit in flat key 13 of circumference, and first key connecting portion 112, flat key 13 and second key connecting portion 122 mutually support and make power input 12 and adapter sleeve 11 circumference fixed to can synchronous revolution. It should be understood that in the present embodiment, the connecting sleeve 11 may be provided with one first key connecting portion 112, or may be provided with a plurality of first key connecting portions 112 along the circumferential direction, and the power input member 12 is provided with a second key connecting portion 122 corresponding to the first key connecting portions 112. In other embodiments, the first key connecting portion 112 may be formed by an external spline, and the second key connecting portion 122 may be formed by an internal spline capable of being axially slidably fitted to the external spline, so as to realize synchronous rotation of the power input member 12 and the connecting sleeve 11.

In an embodiment of the present invention, with reference to fig. 5 and 6, the centrifugal assembly 35 includes slingers 351 mounted on the slinger mounting portion 111C at equal intervals in the circumferential direction. The slinger mounting portion 111C includes a plurality of projections 111D projecting in the radial direction, and each slinger 351 has a sliding groove 111F fitted to the projection 111D so that each slinger 351 can slide in the radial direction relative to its corresponding sliding groove 111F. The swing block mounting portion 111C includes receiving portions 111E located on both sides of the projection 111D in the axial direction, the projection 111D, one of the receiving portions 111E and the first bearing 41 form a receiving groove, the projection 111D, the other of the receiving portions 111E and the second bearing 42 form another receiving groove, the guide plates 14 are respectively disposed on both end surfaces of the projection 111D in the axial direction, and at least a part of the guide plates 14 are received in the receiving grooves. The guide plates 14 are fixed to the projection 111D, and the two guide plates 14 are formed with annular guide grooves to restrict the respective throwers 351 from swinging in the axial direction. The guide plate 14 has a bent portion bent and extended in a direction away from the clutch mounting portion 111 at an end away from the output rotor 2, one bent portion extended in the axial direction and inserted into the dust-proof groove formed in the first support plate 32, the other bent portion extended in the axial direction and inserted into the dust-proof groove formed in the second support plate 33, and the bent portion is used for isolating the clutch chamber 34.

In an embodiment of the present invention, referring to fig. 5, a pulley connecting portion 124 is disposed on an outer circumference of the power input member 12, and the pulley connecting portion 124 communicates with an output shaft of the motor for inputting power through belt transmission, so that the clutch of the present application and the motor for inputting power do not form a rigid connection, and the clutch is connected in a pulley manner, so that a diameter of the output shaft of the motor can be freely designed according to requirements of torque and rotation speed without being limited by a size of the clutch.

In an embodiment of the present invention, the power input member 12 is provided with an axially extending mounting hole for connecting and fixing an output shaft of a motor for inputting power by a screw, a fixing pin, or the like.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.