CN111503173B

CN111503173B - Electromagnetic clutch device

Info

Publication number: CN111503173B
Application number: CN202010286648.5A
Authority: CN
Inventors: 陶煜; 解德杰; 程大海
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-11-30
Anticipated expiration: 2040-04-13
Also published as: CN111503173A

Abstract

The present disclosure relates to an electromagnetic clutch device, comprising: a first member including a mount, a first coupling member, and a coil, the first coupling member being rotatably provided around an axis with respect to the mount for outputting power; a second part including a second joint for outputting power; the third component is used for inputting power, is coaxially arranged with the first component and the second component, and is axially positioned between the first component and the second component, the third component comprises a connecting piece, an armature and a combining ring, the combining ring is sleeved outside the connecting piece, the armature is axially arranged on one side of the connecting piece, which faces the first component, a first limiting piece is movably arranged on the armature, and a second limiting piece is arranged on the connecting piece; when the coil is powered off, the first limiting piece is in limiting fit with the second limiting piece, and the combination ring is connected with the second combination piece to output power through the second part; when the coil passes through a first preset electric signal, the limiting fit between the first limiting part and the second limiting part is removed, and the combination ring is connected with the first combination part to output power through the first part.

Description

Electromagnetic clutch device

Technical Field

The disclosure relates to the technical field of mechanical transmission, in particular to an electromagnetic clutch device.

Background

In mechanical transmission systems, the immediate separation or coupling of the power end and the driven end is achieved by means of a clutch. Generally, the two types of the friction plate and the jaw type are widely used. The jaw type is to transmit power by mutual engagement of teeth, and the friction plate type is to transmit power by friction force between the secondary contact surfaces of the friction plates.

The two clutches are driven to be pressed at two ends through certain pressing force to transmit power, the pressing force providing modes are different, and generally three types of common clutches, namely a mechanical shifting fork type clutch, a hydraulic type clutch and an electromagnetic type clutch, are provided. The mechanical type multi-purpose lever mechanism is realized, an additional oil pressure system is needed for hydraulic type, and the electromagnetic type can be controlled remotely only by embedding wires in advance, so that the electromagnetic type clutch is widely applied to machines such as a numerical control machine tool and an electric automobile.

The electromagnetic clutch in the related technology can only realize the instant disconnection and combination of one path of power output, namely, a single clutch can not realize the instant disconnection and combination of multiple paths of power output, if the two paths of power are switched to output, the two paths of power can be switched to output, and under the condition that the requirements on the installation size and the weight of the electromagnetic clutch are strict, the electromagnetic clutch can not meet the requirements.

Disclosure of Invention

The embodiment of the disclosure provides an electromagnetic clutch device, which can realize switching output of two paths of power through a single electromagnetic clutch device.

An embodiment of the present disclosure provides an electromagnetic clutch device, including:

a first member including a mount, a first coupling member, and a coil provided between the mount and the first coupling member, the first coupling member being rotatably provided around an axis of the electromagnetic clutch device with respect to the mount, and configured to output power;

a second component including a second joint configured to output power; and

the third component is configured to receive input power, is coaxially arranged with the first component and the second component, and is axially positioned between the first component and the second component, the third component comprises a connecting piece, an armature and a combination ring, the combination ring is sleeved outside the connecting piece, the armature is axially arranged on one side of the connecting piece facing the first component, a first limiting piece is movably arranged on the armature, and a second limiting piece is arranged on the connecting piece; wherein,

when the coil is powered off, the first limiting piece is in limiting fit with the second limiting piece to limit the combination ring and the armature to move towards the direction close to the first part, so that the combination ring and the second combination piece are connected to output power through the second part;

when the coil is connected with a first preset electric signal, the first limiting part is released from limiting matching with the second limiting part under the action of electromagnetic force, and the combination ring and the armature move relative to the connecting piece in the direction close to the first component to be connected with the first combination part, so that power is output through the first component.

In some embodiments, when the coil is supplied with a second preset electric signal, the first limiting member is released from limiting engagement with the second limiting member under the action of electromagnetic force, and the coupling ring and the armature move relative to the connecting member in a direction close to the first component until the coupling ring is disengaged from both the first coupling member and the second coupling member; the second predetermined electrical signal is less than the first predetermined electrical signal.

In some embodiments, the third component further comprises a hinge seat provided on a circumferential side wall of the armature; the second limiting piece is arranged on the end face, facing the armature, of the connecting piece and is positioned on the radial outer side of the armature; the first end of the first limiting part is rotatably connected with the hinge base, and the second end of the first limiting part is matched with the first limiting part for limiting when the coil is powered off.

In some embodiments, the first end of the first position-limiting member is provided with an insert at a position radially far away from the hinge base, and the insert can be attracted by electromagnetic force generated by energizing the coil, so that the first position-limiting member rotates to release the position-limiting fit with the second position-limiting member.

In some embodiments, the second limiting member extends outward from the end surface of the armature to form a groove between the second limiting member and the end surface of the connecting member, and in a state where the first limiting member is in limiting fit with the second limiting member, the second end of the first limiting member is embedded in the groove and abuts against the coupling ring.

In some embodiments, a guide groove is disposed on a side wall of the second limiting member facing the connecting member, and the guide groove is connected to the notch of the groove and configured to guide the first limiting member to be separated from the groove and limit the first limiting member to be completely separated from the second limiting member.

In some embodiments, the coupling ring comprises:

the annular part is sleeved outside the connecting piece and is movably arranged along the axial direction relative to the connecting piece; and

the first ring extension part and the second ring extension part are respectively connected to two ends of the annular part along the axial direction, the first ring extension part is used for being connected with the first combining part, the second ring extension part is used for being connected with the second combining part, an accommodating space is formed between the first ring extension part and the armature, and the first limiting part and the second limiting part are located in the accommodating space.

In some embodiments, the third component further comprises a first reset element disposed between the first stop and the armature and configured to reset the first stop into a stop engagement with the second stop in the coil-off state.

In some embodiments, the armature has a projection in the circumferential direction with a radial dimension beyond the connection piece, the end face of the projection remote from the first part abutting against the coupling ring.

In some embodiments, the first member further comprises an output shaft coaxially connected to the first coupling member and protruding from a side remote from the third member;

the second component also comprises a toothed ring which is coaxially connected to one side of the second combining piece away from the third component; and

the third part also comprises an input shaft, the second combining piece is provided with a through hole along the axial direction, and the input shaft is coaxially connected with the connecting piece and extends out of the through hole and the hole of the gear ring.

In some embodiments, the end face of the armature facing the first part is provided with a receiving hole, the bottom of the receiving hole is provided with a guide hole, the inner diameter of the guide hole is smaller than that of the receiving hole, and the third part further comprises:

the guide piece comprises a guide post and a limiting table connected to the first end of the guide post, the second end of the guide post penetrates through the guide hole from the containing hole to be connected with the connecting piece, and the guide post is movably arranged in the guide hole; and

the second reset element is sleeved on the guide post and is positioned between the limiting table and the bottom of the accommodating hole.

In some embodiments, a first pair of mating teeth are disposed on axially opposite end surfaces of the coupling ring and the first coupling member, and a second pair of mating teeth are disposed on axially opposite end surfaces of the coupling ring and the second coupling member.

According to the electromagnetic clutch device, when the coil is powered off, the first limiting piece is in limiting fit with the second limiting piece so as to limit the combination ring and the armature to move towards the direction close to the first part, and therefore the combination ring is connected with the second combination piece to output power through the second part; when the coil is connected with a first preset electric signal, the first limiting part is released from limiting matching with the second limiting part by electromagnetic force, and the combination ring and the armature move relative to the connecting piece in the direction close to the first part to be connected with the first combination part, so that power is output through the first part. The electromagnetic clutch device can reliably realize the switching output of two paths of power, can improve the flexibility of power output in a transmission system, and reduces the overall weight and the installation size of the clutch device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

FIG. 1 is a schematic structural diagram of some embodiments of an electromagnetic clutching device of the present disclosure;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic diagram illustrating the electromagnetic clutch apparatus according to the present disclosure in a state where the coil is de-energized;

FIG. 4 is a schematic diagram illustrating the state of the electromagnetic clutch device of the present disclosure at the moment when the coil is energized;

fig. 5 is a schematic diagram illustrating a state of the battery clutch device according to the present disclosure when a second predetermined electrical signal is applied to the coil;

fig. 6 is a schematic diagram of a state of the battery clutch device according to the present disclosure when the coil is connected with the first preset electrical signal.

Description of the reference numerals

1. A first member; 11. a mounting seat; 12. a first coupling member; 121. an annular base portion; 122. a sleeve portion; 13. an output shaft; 131. a flat bond; 14. a bearing; 15. a power supply interface; 16. a coil;

2. a second component; 21. a second bonding member; 211. a connecting disc; 212. a cyclic structure; 22. a toothed ring;

3. a third component; 31. a connecting member; 32. an armature; 321. a projection; 322. an accommodation hole; 323. a guide hole; 33. a binding ring; 331. an annular portion; 332. a first annular extension; 333. a second annular extension; 34. an input shaft; 35. a hinged seat; 36. a first limit piece; 361. an insert; 37. a second limiting member; 371. a groove; 372. a guide groove; 381. a first reset element; 382. a second reset element; 39. a guide member; 391. a guide post; 392. and a limiting table.

Detailed Description

The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

The terms "first", "second", and the like in the present disclosure are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.

In addition, when an element is referred to as being "on" another element, it can be directly on the other element or be indirectly on the other element with one or more intervening elements interposed therebetween. In addition, when an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element with one or more intervening elements interposed therebetween. Hereinafter, like reference numerals denote like elements.

The description of the relative orientations and positional relationships of the indications "upper," "lower," "top," "bottom," "front," "back," "inner" and "outer" and the like are used in this disclosure for convenience in describing the disclosure, and do not indicate or imply that the indicated devices must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the disclosure. Further, the terms "axial", "circumferential" and "radial" in the following embodiments are used with respect to the electromagnetic clutch device.

In a transmission system, one path of power input is often connected with two paths of power output, the two paths of power output are in an alternative switching mode, two electromagnetic clutches are required to be arranged to be respectively responsible for one path of power output in the related technology, and when the design requirement is harsh on the weight and the installation size of the clutches, the use requirement cannot be met. In view of the above, the present disclosure provides an improved electromagnetic clutch to replace the conventional two electromagnetic clutches to reduce the overall weight and size of the battery clutch.

As shown in fig. 1, the present disclosure provides an electromagnetic clutch device, which in some embodiments includes: the first member 1, the second member 2, and the third member 3 are coaxially arranged, and the third member 3 is located between the first member 1 and the second member 2 in the axial direction. These three components may be independent of each other prior to installation into the transmission system.

Wherein, the first component 1 comprises a mounting seat 11, a first combining piece 12 and a coil 16 arranged between the mounting seat 11 and the first combining piece 12 along the axial direction, the first combining piece 12 is rotatablely arranged around the axial line of the electromagnetic clutch device relative to the mounting seat 11 and is configured to output power. The mounting seat 11 may be in an annular structure, and an annular groove is formed on an end surface of the mounting seat 11 facing the third component 3, the coil 16 is disposed in the annular groove, and the coil 16 is powered through a power supply interface 15 disposed on the mounting seat 11.

The first coupling member 12 includes an annular base portion 121 and a sleeve portion 122, the annular base portion 121 is located at one end of the mounting seat 11 facing the third member 3 and covers the coil 16, the sleeve portion 122 is coaxially connected to a radial inner end of the annular base portion 121 and extends in an inner hole of the annular base portion 121, and the bearing 14 is disposed between the mounting seat 11 and the sleeve portion 122, for example, one bearing 14 may be disposed, or at least two bearings 14 may be disposed at intervals along the axial direction in order to balance the force applied when the clutch device is operated. The outer region of the annular base portion 121 in the radial direction on the end surface of the third member 3 may be provided with teeth to form a dog-tooth electromagnetic clutch, or provided with a friction surface to form a friction electromagnetic clutch.

The mounting base 11 and the first coupling member 12 may be made of a material that can be magnetized, such as electrician pure iron, to form a magnetic circuit around the mounting base 11 and the first coupling member 12 when the coil 16 is energized.

The second component 2 includes a second joint 21 configured to output power. Depending on the type of clutch, the second coupling member 21 may be provided with teeth, friction surfaces, or the like, in a radially outer region of the end surface of the third member 3. The second bonding member 21 may include a connection disc 211 and a ring structure 212, the ring structure 212 being connected to a radially outer end of the connection disc 211 for coupling with the bonding ring 33, and the connection force between the ring gear 22 and the second bonding member 21 can be increased by providing the connection disc 211. Alternatively, the connection disc 211 and the ring structure 212 are designed as an integral structure.

The third component 3 is configured to receive input power. As shown in fig. 1 and 2, the third part 3 includes a connection piece 31, an armature 32, and a coupling ring 33. The connecting piece 31 can be connected with an input shaft 34, the axial position of the connecting piece 31 is fixed in the working process, the combining ring 33 is sleeved outside the connecting piece 31, and the connecting piece 31 can adopt an annular or disc-shaped structure. The armature 32 is arranged axially on the side of the connecting piece 31 facing the first component 1, a first stop element 36 is movably arranged on the armature 32, and a second stop element 37 is arranged on the connecting piece 31. The coupling ring 33 may be provided with teeth, friction surfaces, and the like along radially outer regions of both axial end surfaces depending on the type of clutch device.

The armature 32 and the coupling ring 33 may be made of a material that can be magnetized, such as electrician pure iron, so that the electromagnetic force generated when the coil 16 is energized attracts the armature 32 and the coupling ring 33 toward the first component 1, thereby coupling the coupling ring 33 with the first coupling member 12. The term "coupled" as used herein means capable of transmitting input power by means of tooth engagement and friction.

As shown in fig. 3, when the coil 16 is powered off, the first limiting member 36 and the second limiting member 37 are in limiting engagement to limit the movement of the coupling ring 33 and the armature 32 toward the first component 1, so that the coupling ring 33 is coupled to the second coupling member 21, and the coupling ring 33 is disengaged from the first coupling member 12, and power is output only through the second component 2.

As shown in fig. 1, the armature 32 has a projection 321, which extends radially beyond the connecting piece 31, in the circumferential direction, the end face of the projection 321 facing away from the first component 1 resting against the coupling ring 33. Since the position of the connecting member 31 remains unchanged, the position of the armature 32 is fixed by the limit fit of the first limit stop 36 and the second limit stop 37. Further, the coupling ring 33 also remains positionally fixed by the abutting action of the projection 321. At this time, the coupling ring 33 is reliably coupled to the second coupling member 21, and power can be output through the second member 2.

When a first predetermined electrical signal is applied to the coil 16, for example, a first predetermined current is applied, under the action of electromagnetic force, the first limiting member 36 is released from limiting engagement with the second limiting member 37, and the coupling ring 33 and the armature 32 move relative to the connecting member 31 in a direction approaching the first component 1 until the coupling ring 33 is coupled with the first coupling member 12, at which time the coupling ring 33 is disengaged from the second coupling member 21, and at which time power is output only through the first component 1.

The electromagnetic clutch device can selectively output input power through the first combining piece 12 or the second combining piece 21, has reliable power output, can improve the flexibility of power output in a transmission system, and reduces the whole weight and the installation size of the clutch device.

On the basis of this embodiment, as shown in fig. 5, when the coil 16 is fed with the second preset electrical signal, under the action of electromagnetic force, the first limiting member 36 is released from limiting engagement with the second limiting member 37, and the coupling ring 33 and the armature 32 move relative to the connecting member 31 in the direction approaching the first component 1 until the coupling ring 33 is disengaged from the first coupling member 12 and the second coupling member 21, that is, there are gaps between the two end faces of the coupling ring 33 in the axial direction and the first coupling member 12 and the second coupling member 21, respectively; the second predetermined electrical signal is less than the first predetermined electrical signal. For example, a first predetermined current is applied to the coil 16, and a second predetermined current is smaller than the first predetermined current.

When a second preset electric signal is input into the electromagnetic clutch device, the limit matching of the first limit part 36 and the second limit part 37 can be disabled, the coupling ring 33 and the armature 32 reach the neutral position under the magnetic action, and enter the neutral position state, so that the first coupling part 12 and the second coupling part 21 do not output power. Thus, the electromagnetic clutch device can be switched among the neutral position, the first power output and the second power output.

As shown in fig. 2, the third part 3 further comprises a hinge seat 35 provided on a peripheral side wall of the armature 32; the second stopper 37 is provided on an end surface of the connection piece 31 facing the armature 32, and is located radially outside the armature 32; the first retaining member 36 has a first end rotatably connected to the hinge base 35 in a plane passing through the axis, and a second end configured to cooperate with the first retaining member 36 to retain the coil 16 when the coil is de-energized.

In this embodiment, the first stopper 36 is rotationally switched between the two states of stopping and stopping, the axial space of the electromagnetic clutch can be saved, and the state switching can be reliably performed. Alternatively, the first limiting member 36 can be axially moved to switch between the limiting state and the releasing state.

As shown in fig. 2, an insert 361 is disposed at a position of the first end of the first position-limiting member 36 radially away from the hinge base 35, and the insert 361 can be attracted by the electromagnetic force generated by the coil 16 when the coil is energized, so that the first position-limiting member 36 rotates to release the position-limiting engagement with the second position-limiting member 37. For example, the insert 361 may be made of a material that can be magnetized, such as electrician pure iron, and the remaining portion of the first position-limiting member 36 except for the insert 361 is made of a material that has no magnetization characteristic.

Because the insert 361 is located at a position where the first limiting member 36 is far away from the hinge base 35, when the coil 16 is energized, only the top end of the first limiting member 36 is attracted, the first limiting member 36 can be attracted to rotate by a small electromagnetic force, and a radial force applied to a rotating shaft between the first limiting member 36 and the hinge base 35 can be reduced, so that the rotation is more flexible, and the reliability of the state switching of the clutch device is improved.

As shown in fig. 2, the second limiting member 37 extends outward from the end surface of the armature 32 to form a groove 371 between the second limiting member 37 and the end surface of the connecting member 31, and in a state that the first limiting member 36 is in limiting fit with the second limiting member 37, the second end of the first limiting member 36 is embedded in the groove 371 and abuts against the coupling ring 33. For example, the first position-limiting member 36 is a trigger, and the second position-limiting member 37 is a hook.

On this basis, as shown in fig. 5, the second limiting member 37 is provided with a guide groove 372 on a side wall facing the connecting member 31, and the guide groove 372 is connected to the notch of the groove 371 and configured to guide the first limiting member 36 to be separated from the groove 371 and limit the first limiting member 36 to be completely separated from the second limiting member 37.

Specifically, the portion of the guide groove 372 adjacent to the notch has a first inclined surface to guide the first limiting member 36 to be separated from the groove 371, the portion of the guide groove 372 away from the notch has a second inclined surface, the second inclined surface is connected to the first inclined surface, and the inclination angle of the second inclined surface relative to the axis is increased to limit the first limiting member 36 to be completely separated from the second limiting member 37, so that the first limiting member 36 is easily re-inserted into the groove 371 after the coil 16 is powered off.

By providing the groove 371 and the guide groove 372 on the second limiting member 37, the smoothness and reliability of the clutch device can be improved when different states are switched.

As shown in fig. 1, the coupling ring 33 includes: an annular portion 331 fitted around the connecting member 31 and axially movably disposed with respect to the connecting member 31; and a first annular extension part 332 and a second annular extension part 333 which are respectively connected to two ends of the annular part 331 along the axial direction, wherein the first annular extension part 332 is used for being coupled with the first coupling member 12, the second annular extension part 333 is used for being coupled with the second coupling member 21, an accommodating space Q is formed between the first annular extension part 332 and the armature 32, and the first limiting member 36 and the second limiting member 37 are located in the accommodating space Q.

The embodiment can make full use of the radial space between the armature 32 and the coupling ring 33 to arrange the first limiting member 36 and the second limiting member 37, so that the structure in the battery clutch device is more compact, and the occupied space during installation is reduced; and the first limiting member 36 and the second limiting member 37 are disposed on the radial inner side of the first annular extension 332, so as to prevent foreign matters from entering the groove 371 during the use of the battery clutch device, thereby ensuring reliable switching of the working state of the clutch.

As shown in fig. 2, the third component 3 further includes a first reset element 381, disposed between the first limiting member 36 and the armature 32, configured to reset the first limiting member 36 to be in limiting fit with the second limiting member 37 in the power-off state of the coil 16, specifically, to enable a second end of the first limiting member 36 to enter the groove 371.

As shown in fig. 6, the end surface of the armature 32 facing the first member 1 is provided with a receiving hole 322, the bottom of the receiving hole 322 is provided with a guide hole 323, the inner diameter of the guide hole 323 is smaller than that of the receiving hole 322, and the third member 3 further includes: a guide member 39 including a guide column 391 and a stopper 392 coupled to a first end of the guide column 391, a second end of the guide column 391 passes through the guide hole 323 from the receiving hole 322 to be coupled to the coupling member 31, the guide column 391 being movably disposed in the guide hole 323; and a second reset element 382 sleeved on the guide post 391 and located between the limiting table 392 and the bottom of the accommodating hole 322 for resetting the armature 32, further, the armature 32 pushes the coupling ring 33 to be reset to be coupled with the second coupler 21 through the protrusion 321.

In practice, the second reset element 382 may be disposed at intervals along the circumferential direction to provide a balanced reset force for the armature 32 and the coupling ring 33, the limit matching structure formed by the first limiting member 36 and the second limiting member 37 may also be disposed at intervals along the circumferential direction to provide a balanced limit effect for the armature 32 and the coupling ring 33, and the second reset element 382 and the limit matching structure may be alternately disposed along the axial direction.

On the basis of the above embodiment, the first member 1 further comprises an output shaft 13, the output shaft 13 being coaxially connected to the first coupling member 12 and protruding from a side remote from the third member 3. Specifically, the output shaft 13 is inserted into the sleeve portion 122 of the first coupling member 12 to be fitted, and may be connected by, for example, a flat key 131 or a spline or the like. The second part 2 further comprises a toothed ring 22, the toothed ring 22 being coaxially connected to the second coupling member 21 on a side remote from the third part 3, e.g. the toothed ring 22 may be provided with at least one of internal or external toothing for power transmission in mesh with other gears. The third component 3 further comprises an input shaft 34, the second coupling member 21 is provided with a through hole along the axial direction, and the input shaft 34 is coaxially connected to the connecting member 31 and extends from the through hole and the hole of the toothed ring 22. For example, the end of the input shaft 34 connected to the connecting member 31 may have a disk-like structure to facilitate connection of the ends of the connecting member 31 to provide a connection area.

Since the third member 3 is disposed between the first member 1 and the second member 2, the input shaft 34 is protruded from the through hole of the second coupling member 21 and the hole of the ring gear 22, and the radial dimension of the electromagnetic clutch device can be reduced.

Alternatively, the first coupling member 12 may output power by connecting a ring gear at its outer periphery, the second coupling member 21 may output power by connecting an output shaft, the coupling ring 33 may receive input power by connecting a ring gear at its outer periphery, and the like.

In the above embodiment, the electromagnetic clutch is a dog clutch, the end surfaces of the coupling ring 33 and the first coupling member 12 opposite to each other in the axial direction are provided with a first pair of engaging teeth, and the end surfaces of the coupling ring 33 and the second coupling member 21 opposite to each other in the axial direction are provided with a second pair of engaging teeth.

Alternatively, the electromagnetic clutch is a friction-type electromagnetic clutch, the coupling ring 33 and the first coupling member 12 are provided with first mating friction surfaces on axially opposite end surfaces, and the coupling ring 33 and the second coupling member 21 are provided with second mating friction surfaces on axially opposite end surfaces.

The operation of the battery clutch device according to the present disclosure will be described with reference to fig. 3 to 6. Since fig. 3 to 6 show only one side of the axis in a structural view, the second reduction element 382 is shown in a cross section of the first reduction element 381 in order to be able to embody both the first reduction element 381 and the second reduction element 382. The electromagnetic clutch device receives power input through the input shaft 34, and has three working states:

1. the first state:

as shown in fig. 4, the coil 16 is in a power-off state, no magnetic field is generated, the first limit member 36 is embedded into the groove 371 under the action of the first reset element 381, and axially limits the armature 32 and the coupling ring 33, so that the coupling ring 33 is coupled to the second coupling member 21, and the rotation of the input shaft 34 drives the third component 3, the second coupling member 21 and the toothed ring 22 to rotate, so as to output power through the toothed ring 22 on the right side of the second coupling member 21.

Due to the weak elastic action of the second reset element 382, the limit cooperation between the first limit piece 36 and the second limit piece 37 can provide enough pressing force for the power transmission of the gear ring 22, thereby improving the reliability of the power transmission.

2. The second state:

when the coil 16 is energized with a first predetermined electrical signal, a first magnetic field is generated, the insert 361 on the first position-limiting member 36 overcomes the acting force of the first reset element 381 under the action of electromagnetic force, and rotates around the rotating shaft on the hinge base 35, so that the second end of the first position-limiting member 36 is disengaged from the groove 371, and fig. 4 is a schematic diagram of a state at the moment of energization.

As shown in fig. 5, the second end of the first limiting member 36 is pulled out of the groove 371 and moves outwards along the first inclined surface of the guiding groove 372 until the second inclined surface is limited and stops rotating. At this time, the limit cooperation between the first limiting member 36 and the second limiting member 37 is released, the armature 32 moves toward the first component 1 under the action of magnetic force against the action of the second reset element 382, a gap occurs between the armature 32 and the connecting member 31, the coupling ring 33 also moves toward the first component 1 under the action of magnetic force until being coupled to the first coupling member 12, and the rotation of the input shaft 34 drives the third component 3, the first coupling member 12 and the output shaft 13 to rotate, so that power is transmitted through the output shaft 13 connected to the first coupling member 12.

3. The third state:

in contrast to the second state, the coil 16 is fed with a second predetermined electrical signal, which is smaller than the first predetermined electrical signal, to generate a second magnetic field that is weaker than the first magnetic field.

After the limit cooperation between the first limit part 36 and the second limit part 37 is released, the armature 32 moves toward the first component 1 under the action of magnetic force against the action of the second reset element 382, a gap occurs between the armature 32 and the connecting piece 31, the coupling ring 33 also moves toward the first component 1 under the action of magnetic force until both end faces of the coupling ring 33 along the axial direction are separated from the first coupling member 12 and the second coupling member 21, and the rotation of the input shaft 34 is not transmitted to the first coupling member 12 and the second coupling member 21, and is in a neutral state.

The electromagnetic clutch device disclosed by the invention is only provided with one set of coil 16, one-way input and two-way selective output can be realized, the functions of two traditional clutches are integrated, the output power of the second part 2 on the right side is increased compared with the traditional clutches, and in addition, the scheme disclosed by the invention is completely different from the structural mode that two clutches are integrated simply by arranging two sets of coils 16. Moreover, since the power output of the second member 2 is ensured by the effect of the limit structure, a larger and more stable torque output can be provided, and the loss of the tooth speed can be prevented when applied to the dog-type electromagnetic clutch. In addition, the arrangement space and the weight are greatly reduced, and the reduction can be about 40%.

The electromagnetic clutch device provided by the present disclosure is described in detail above. The principles and embodiments of the present disclosure are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present disclosure. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.

Claims

1. An electromagnetic clutch device comprising:

a first member (1) including a mount (11), a first coupling member (12), and a coil (16) provided between the mount (11) and the first coupling member (12), the first coupling member (12) being rotatably provided about an axis of the electromagnetic clutch device with respect to the mount (11), configured to output power;

a second component (2) including a second joint (21) configured to output power; and

a third part (3) configured to receive input power, arranged coaxially with the first part (1) and the second part (2), and is axially between the first part (1) and the second part (2), the third part (3) comprises a connecting piece (31), an armature (32) and a coupling ring (33), the combination ring (33) is sleeved outside the connecting piece (31), the armature (32) is arranged on one side of the connecting piece (31) facing the first part (1) along the axial direction, a first limit part (36) is movably arranged on the armature iron (32), a second limit part (37) is arranged on the connecting piece (31), the first limiting part (36) is provided with an insert (361), the insert (361) can be attracted by electromagnetic force generated by electrifying the coil (16), so that the first limiting piece (36) rotates to remove the limiting fit with the second limiting piece (37); wherein,

when the coil (16) is powered off, the first limiting part (36) is in limiting fit with the second limiting part (37) to limit the combination ring (33) and the armature (32) to move towards the direction close to the first component (1), so that the combination ring (33) is coupled with the second joint piece (21) to output power through the second component (2);

when the coil (16) is connected with a first preset electric signal, under the action of electromagnetic force, the first limiting part (36) is released from limiting matching with the second limiting part (37), the combination ring (33) and the armature (32) move to the direction close to the first component (1) relative to the connecting piece (31), the combination ring (33) is connected with the first combination part (12), and therefore power is output through the first component (1).

2. The electromagnetic clutch device according to claim 1, wherein when the coil (16) is energized with a second predetermined electrical signal, the first limiting member (36) is released from limiting engagement with the second limiting member (37) under the action of electromagnetic force, and the coupling ring (33) and the armature (32) move relative to the connecting member (31) in a direction approaching the first component (1) until the coupling ring (33) is disengaged from both the first coupling member (12) and the second coupling member (21); the second preset electrical signal is smaller than the first preset electrical signal.

3. Electromagnetic clutch device according to claim 1 or 2, in which the third part (3) further comprises a hinged seat (35) provided on a circumferential side wall of the armature (32); the second limiting part (37) is arranged on the end face, facing the armature (32), of the connecting piece (31) and is positioned on the radial outer side of the armature (32); the first end of the first limiting part (36) is rotatably connected with the hinge seat (35), and the second end of the first limiting part is matched with the first limiting part (36) for limiting when the coil (16) is powered off.

4. The electromagnetic clutch device according to claim 3, wherein the insert (361) is provided at a position where the first end of the first retaining member (36) is radially away from the hinge base (35).

5. The electromagnetic clutch device according to claim 3, wherein the second limiting member (37) extends outward from an end surface of the armature (32) to form a groove (371) between the second limiting member (37) and the end surface of the connecting member (31), and in a state where the first limiting member (36) is in limiting fit with the second limiting member (37), a second end of the first limiting member (36) is inserted into the groove (371) and abuts against the coupling ring (33).

6. The electromagnetic clutch device according to claim 5, wherein the second retaining member (37) has a guide groove (372) formed on a side wall thereof facing the connecting member (31), the guide groove (372) is connected to a notch of the groove (371) and configured to guide the first retaining member (36) to be removed from the groove (371) and to restrain the first retaining member (36) from being completely removed from the second retaining member (37).

7. The electromagnetic clutch device according to claim 1, wherein the coupling ring (33) includes:

an annular portion (331) that is fitted around the connector (31) and is provided so as to be axially movable relative to the connector (31); and

first ring extension (332) and second ring extension (333), connect respectively in annular portion (331) is along axial both ends, first ring extension (332) be used for with first conjunction (12) hookup, second ring extension (333) be used for with second conjunction (21) hookup, just first ring extension (332) with form accommodation space (Q) between armature (32), first locating part (36) and second locating part (37) are located accommodation space (Q).

8. The electromagnetic clutch device according to claim 1, wherein the third component (3) further comprises a first reset element (381), disposed between the first limit member (36) and the armature (32), configured to reset the first limit member (36) into limit engagement with the second limit member (37) in the de-energized state of the coil (16).

9. Electromagnetic clutch device according to claim 1, in which the armature (32) has a projection (321) in the circumferential direction with a radial dimension beyond the connecting piece (31), the end face of the projection (321) remote from the first component (1) resting against the coupling ring (33).

10. The electromagnetic clutch device according to claim 1, wherein the first member (1) further comprises an output shaft (13), the output shaft (13) being coaxially connected to the first coupling member (12) and protruding from a side remote from the third member (3);

the second component (2) further comprises a toothed ring (22), and the toothed ring (22) is coaxially connected to one side, away from the third component (3), of the second joint part (21); and

the third component (3) further comprises an input shaft (34), a through hole is formed in the second combining piece (21) in the axial direction, and the input shaft (34) is coaxially connected to the connecting piece (31) and extends out of the through hole and the hole of the gear ring (22).

11. The electromagnetic clutch device according to claim 1, wherein an end surface of the armature (32) facing the first member (1) is provided with a receiving hole (322), a bottom of the receiving hole (322) is provided with a guide hole (323), an inner diameter of the guide hole (323) is smaller than the receiving hole (322), and the third member (3) further includes:

a guide member (39) comprising a guide column (391) and a stop (392) connected to a first end of the guide column (391), a second end of the guide column (391) is connected to the connecting member (31) from the accommodating hole (322) through the guide hole (323), the guide column (391) is movably arranged in the guide hole (323); and

the second resetting element (382) is sleeved on the guide column (391) and is positioned between the limiting table (392) and the bottom of the accommodating hole (322).

12. Electromagnetic clutch device according to claim 1, wherein a first pair of mating teeth is provided on axially opposite end faces of the coupling ring (33) and the first coupling member (12), and a second pair of mating teeth is provided on axially opposite end faces of the coupling ring (33) and the second coupling member (21).