CN208669887U

CN208669887U - Electromagnetic clutch

Info

Publication number: CN208669887U
Application number: CN201821368049.2U
Authority: CN
Inventors: 葛凤龙; 张辉明; 张伯平; 宁明志
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2018-08-23
Filing date: 2018-08-23
Publication date: 2019-03-29
Anticipated expiration: 2028-08-23

Abstract

The utility model provides a kind of electromagnetic clutch, simple and compact for structure, small in size, and transmission efficiency is high, works more reliable and more stable.To achieve the above object, the electromagnetic clutch of the utility model, including shell, driving wheel, driven wheel and executing agency, the executing agency includes the electromagnetic coil for being set in the intracorporal magnetic yoke of the shell He being sheathed on outside the magnetic yoke, the driving wheel is axially movably sheathed on the transmission shaft connecting with power source, the executing agency further includes elastic component, one end of the driving wheel is accessed the shell and is oppositely arranged with the magnetic yoke, the other end is oppositely arranged with the driven wheel, the elastic component precompressed is shunk between the driving wheel and the shell, the working position engaged with the driven wheel is maintained at driving wheel described in pushing tow；After the electromagnetic coil is powered, the driving wheel overcomes the elastic force of the elastic component to move to the working position with the driven wheel disconnect engagement under the electromagnetism power drive of the magnetic yoke.

Description

Electromagnetic clutch

Technical field

The utility model relates to Clutch Technology fields, more particularly to a kind of electromagnetic clutch.

Background technique

Clutch is mainly used in transmission system, and torsion is transmitted by the engagement and separation of active part and secondary part Square completes the work such as the transmission, stopping and speed change of transmission system.Electromagnetic clutch controls the suction of magnetic element using electromagnetic principle It closes and separation, working method is generally divided into power-off separation and the separation that is powered.

Electromagnetic clutch in the prior art, mostly friction disk type realize cutting for power by disconnection/engagement of friction plate Disconnected/transmitting.It transmitting and switchs as power, electromagnetic clutch plays a crucial role in the transmission system on automobile, but There is such as the disadvantages of structure is complicated, at high cost, volume is larger, use environment is limited in existing friction electromagnetic clutch, And the transmitting torque of this clutch is limited, transmission efficiency bottom.

Therefore, a kind of electromagnetic clutch how is designed, is one urgently to be solved to simplify structure, improve transmission efficiency Problem.

Utility model content

It is simple and compact for structure the purpose of the utility model is to provide a kind of electromagnetic clutch, small in size, transmission efficiency Height works more reliable and more stable.

To achieve the above object, the utility model provides a kind of electromagnetic clutch, including shell, driving wheel, driven wheel And executing agency, the executing agency include the electromagnetic wire for being set in the intracorporal magnetic yoke of the shell He being sheathed on outside the magnetic yoke Circle, the driving wheel are axially movably sheathed on the transmission shaft connecting with power source, and the executing agency further includes elastic component, One end of the driving wheel is accessed the shell and is oppositely arranged with the magnetic yoke, and the other end is oppositely arranged with the driven wheel, The elastic component precompressed is shunk between the driving wheel and the shell, is maintained at and the driven wheel with driving wheel described in pushing tow The working position of engagement；After the electromagnetic coil is powered, the driving wheel overcomes the bullet under the electromagnetism power drive of the magnetic yoke The elastic force of property part moves to the working position with the driven wheel disconnect engagement.

The electromagnetic clutch of the utility model, using power-off convolution, in the case where electromagnetic coil is in off-position, using pre- The elastic component pushing tow driving wheel of setting is compressed, so that driving wheel is maintained at the working position engaged with driven wheel, realizes that power passes It passs；When needing to disconnect power transmitting, electromagnetic coil is powered, so that magnetic yoke generates the electromagnetic force for attracting driving wheel, to overcome bullet Property part elastic force, driving driving wheel be detached from driven wheel, disconnect engagement.Relative to energization convolution, the work of convolution is powered off More stable reliable, the service life is longer；Especially, one end of driving wheel is protruded into shell and is directly oppositely arranged with magnetic yoke, Elastic component directly precompressed is shunk between driving wheel and shell, the active force for pushing driving wheel is generated, can not only protect The joint reliability for demonstrate,proving driving wheel and driven wheel, can also simplify structure, so that the electromagnetic clutch of the utility model more steps up It gathers, can be used under installation space constrained environment.

Optionally, the driving wheel is equipped with the internal spline cooperated with the transmission shaft, and cooperate with the driven wheel External splines.

When driving wheel is all made of spline with transmission shaft, driven wheel and connect, compared with tooth engagement, the tooth number for participating in engagement increases More, forced area increases, and can transmit bigger torque, and bearing capacity is strong, also, biography can be improved in the form of this key transmission Efficiency of movement；Furthermore driving wheel is connect with transmission shaft using spline, can be led to driving wheel along the axial movement of transmission shaft To mentioning high control precision.

Optionally, the magnetic yoke, the driving wheel and the driven wheel are coaxial, and the axial direction of three is pre- with the elastic component Compression direction is parallel.

Optionally, the driving wheel is stepped in axial direction, and to form path section and major diameter section, the path section is inserted in institute It states in the inner hole of magnetic yoke, the major diameter section is inserted in the connection inner hole of the driven wheel.

Optionally, there is radial clearance, so that the path section can be relatively described between the path section and the magnetic yoke Magnetic yoke circumferentially rotates.

Optionally, the internal spline is set to the inner hole of the path section.

Optionally, the shaft end of the major diameter section is equipped with diameter contracting portion, and the external splines is set to diameter contracting portion, the major diameter section The connection inner hole is inserted in diameter contracting portion.

Optionally, the inner hole of the driven wheel is stepped in axial direction, to form large diameter hole and diameter holes, the large diameter hole As the connection inner hole, the driven wheel is rotationally sheathed on the transmission shaft with the diameter holes axial restraint, circumferential direction.

Optionally, the driving wheel also has the annular end face being connected between the path section and the major diameter section, institute Stating shell has the end cap that is oppositely arranged with the annular end face, and the elastic component is axially preloading to shrink in the end cap and described Between annular end face.

Optionally, the magnetic yoke is fixed on the end cap and is linked together with the shell, and the shell is using non-magnetic Material, and axial restraint, circumferential direction are rotationally sheathed on the transmission shaft.

Detailed description of the invention

Fig. 1 provides the schematic diagram of the section structure of electromagnetic clutch in a specific embodiment by the utility model.

Fig. 1:

- 221 annular end face -23 of -22 diameter contracting portion of shell -1 end cap -21 major diameter section of -2 path section of -11 driving wheel from - 6 transmission shaft -7 of -5 electromagnetic coil of driving wheel -3 large diameter hole -31 diameter holes -4 magnetic yoke of -32 elastic component.

Specific embodiment

Below in conjunction with attached drawing, the utility model is specifically introduced, so as to this reality of those skilled in the art's accurate understanding With novel technical solution.

Axial direction as described herein, circumferential direction, radial direction etc. are reference with transmission shaft 7, with the axis direction of transmission shaft 7 or Person is parallel to the direction of the axis to be axial, is radial direction with the diameter extending direction of transmission shaft 7, with the circular direction of transmission shaft 7 For circumferential direction.

Described herein is inside and outside using the central axes of transmission shaft 7 as reference, refers to relative position radially, in radial direction On, the direction close to the central axes of transmission shaft 7 be it is interior, the direction of the separate central axes is outer.

Size as described herein be in contrast, be all due to hierarchic structure caused by radial dimension it is inconsistent, be The major diameter formed and small gauge structure with radial dimension size.

As shown in Figure 1, present solution provides a kind of electromagnetic clutch, including shell 1, driving wheel 2, driven wheel 3 and execution Mechanism, executing agency include the magnetic yoke 5 being set in shell 1 and the electromagnetic coil 6 being sheathed on outside magnetic yoke 5, and driving wheel 2 is axial can It is movably sheathed on transmission shaft 7, which connect with power source, driving wheel 2 can be imparted power to by transmission shaft 7, Driving wheel 2 is driven to rotate；One end of driving wheel 2 is accessed shell 1 and is oppositely arranged with magnetic yoke 5, and the other end is opposite with driven wheel 3 to be set It sets, executing agency further includes elastic component 4, which shrinks between driving wheel 2 and shell 1, with towards driven wheel 3 Direction pushes driving wheel 2, and then pushing tow driving wheel 2 is maintained at the working position engaged with driven wheel 3, realizes power transmitting；Electromagnetism After coil 6 is powered, magnetic yoke 5 generates the electromagnetic force that driving wheel 2 is attracted towards the direction far from driven wheel 3, and the electromagnetism power drive is actively Wheel 2 overcomes the elastic force of elastic component 4 and is detached from driven wheel 3, and then moves to the working position with 3 disconnect engagement of driven wheel.

As it can be seen that the electromagnetic clutch of the utility model, using power-off convolution, in the case where electromagnetic coil 6 is in off-position, The 4 pushing tow driving wheel 2 of elastic component being arranged using precommpression, so that driving wheel 2 is maintained at the working position engaged with driven wheel 3, Realize power transmitting；When needing to disconnect power transmitting, electromagnetic coil 6 is powered, so that magnetic yoke 5 generates the electricity for attracting driving wheel 2 Magnetic force, to overcome the elastic force of elastic component 4, driving driving wheel 2 is detached from driven wheel 3, disconnect engagement.Relative to energization convolution, The work for powering off convolution is more stable reliable, and the service life is longer.

Also, the electromagnetic clutch of the utility model accesses driving wheel 2 in shell 1 towards one end of magnetic yoke 5, thus It is directly oppositely arranged with magnetic yoke 5, after electromagnetic coil 6 is powered, electromagnetic force caused by magnetic yoke 5 directly acts on driving wheel 2, energy The response speed for enough improving driving wheel 2, improves the precision of on-off control；Especially, at this point, driving wheel 2 is towards one end of magnetic yoke 5 The end face that axial one end can be in shell 1 is directly opposite, and then the direct precompressed of elastic component 4 is shunk in driving wheel 2 and shell 1 Between, the active force of pushing tow driving wheel 2 is generated, can not only guarantee the joint reliability of driving wheel 2 Yu driven wheel 3, it can be with Driving wheel 2 is placed in shell 1 in the form of " embedded ", to simplify structure, volume is reduced, so that the electromagnetism of the utility model Clutch is more compact, and then adapts to the limited narrow environment of installation space.

To realize power transmitting, driving wheel 2 can be equipped with the internal spline cooperated with transmission shaft 7, and cooperate with driven wheel 3 External splines.Realize that the power of driving wheel 2 and driven wheel 3, driving wheel 2 and transmission shaft 7 transmits by way of spline drived.This When, compared with tooth transmission, increase the tooth number for participating in engaging, so that forced area increases, energy The bigger torque of enough transmitting, improves bearing capacity.Also, transmission efficiency can be improved in the form of this key transmission.For actively With for the connection of transmission shaft 7, spline structure can also be oriented to driving wheel 2 along the axial movement of transmission shaft 7 wheel 2, from And mention high control precision.

As shown in Figure 1, magnetic yoke 5, driving wheel 2 and driven wheel 3 can be coaxial, the central axes of transmission shaft 7 can be used as three Central axes, also, elastic component 4 can also be parallel to the central axes and carry out precommpression, i.e. the precommpression direction of elastic component 4 is parallel In magnetic yoke 5, the axial direction of driving wheel 2 and driven wheel 3.

That is, transmission shaft 7 can be used as a reference axis, magnetic yoke 5, driving wheel 2 and driven wheel 3 are with the transmission shaft 7 On the basis of be configured, be successively set in the transmission shaft 7, realize positioning and power transmitting.At this point, in the axial direction, magnetic yoke 5, master Driving wheel 2 and driven wheel 3 are equivalent to " string " on the transmission shaft 7, and radially, magnetic yoke 5, driving wheel 2 and driven wheel 3 can also be deposited In " nesting " relationship, so that the structure of electromagnetic clutch is more compact, volume is smaller, and then adapts to narrow building ring Border.

In detail, to realize magnetic yoke 5, driving wheel 2 and " nested " connection in the radial direction of driven wheel 3, driving wheel 2 is in axial direction Stepped it can be arranged, to form path section 21, major diameter section 22 and the ring being connected between path section 21 and major diameter section 22 Shape end face 23.It is socketed at this point, driving wheel 2 can be formed with the path section 21 of one end and magnetic yoke 5, with the major diameter section 22 of its other end It is formed and is socketed with driven wheel 3.

Wherein, path section 21 can be projecting axially into the inner hole of magnetic yoke 5, to be inserted in the inner hole of magnetic yoke 5；Meanwhile in path Should also have radial clearance between the outer wall of section 21 and the inner hole wall of magnetic yoke 5, so that path section 21 can be circumferential turn of opposing yoke 5 It is dynamic, avoid driving wheel 2 from interfering in the circumferential with magnetic yoke 5.

Connection inner hole can be set in a shaft end of driven wheel 3 towards driving wheel 2, major diameter section 22 is projecting axially into the company Inner hole is connect, to be socketed with the connection inner hole and major diameter section 22, realizes the connection of driving wheel 2 and driven wheel 3.To realize driving wheel 2 with the cooperation of driven wheel 3, while not increasing the radial dimension of entire clutch too much, can be in major diameter section 22 towards driven Diameter contracting portion 221 is arranged in the shaft end of wheel 3, then connection inner hole is projecting axially into the diameter contracting portion 221, to be inserted in the connection inner hole. Meanwhile external splines is set to the diameter contracting portion 221, the bond structure matched is set in connection inner hole, realizes driving wheel 2 and driven wheel 3 key transmission.

Specifically, the inner hole of driven wheel 3 can be stepped in axial direction, to form large diameter hole 31 and diameter holes 32, In, large diameter hole 31 is in towards a shaft end of driving wheel 2, and as above-mentioned connection inner hole, diameter holes 32 are in far from driving wheel 2 A shaft end, driven wheel 3 can by the diameter holes 32 by axial restraint, it is circumferential rotationally in the form of be sheathed on transmission shaft 7, it is real Existing axially position.

At the same time it can also the inner hole by internal spline set on the path section 21 of driven wheel 3, at this point, driving wheel 2 is with the path section 21 carry out key transmission with transmission shaft 7.

Furthermore shell 1 can have the end cap 11 being oppositely arranged with the annular end face 23 of driving wheel 2, in this way, elastic component 4 It axially preloading can shrink between end cap 11 and annular end face 23, generate the elastic force of pushing tow driving wheel 2.

At this point, one end of shell 1 and transmission shaft 7 are socketed, and are rotatably coupled with 7 axial restraint of transmission shaft, circumferential direction, with Realize the axially position of shell 1.The other end and driving wheel 2 of shell 1 are set with, also, are existed between the shell 1 and driving wheel 2 Radial clearance, the radial clearance substantially extend in the circumferential, form annular gap, to allow 2 shell 1 of driving wheel to relatively rotate. Specifically, the other end of shell 1 can socket-connect with the major diameter section 22 of driving wheel 2, at this point, diameter contracting portion 221 can be set to major diameter Section 22 deviates from the one side of shell 1, in order to engage with driven wheel 3, as shown in Figure 1.

Radially, elastic component 4 may be at the outside of magnetic yoke 5 and electromagnetic coil 6, but can be with electromagnetic coil 6 and magnetic Yoke 5 does not contact, to avoid interference.Elastic component 4 can be with its axial both ends and the end cap 11 of shell 1 and the annular end of driving wheel 2 Face 23, which is formed, axially supports cooperation, to realize the positioning of the elastic component 4.Those skilled in the art can also be in 23 He of annular end face The mounting base of elastic component 4 is arranged in end cap 11, to improve the reliability of positioning of elastic component 4, guarantees that elastic component 4 only occurs in the axial direction Deformation.

The elastic component 4 of this paper specifically can be spring ring, be also possible to the structure types such as leaf spring or cylindrical spring.

In addition, the magnetic yoke 5 of this paper can be integrated with shell 1, it can specifically be fixed on end cap 11.

Shell 1 can use non-magnet material, and extraction string holes can also be arranged, to introduce outer lead in shell 1 And it is electrically connected with electromagnetic coil 6, and then pass through the engagement state of control control system of switching on or off electricity electromagnetic clutch.

Electromagnetic clutch provided to the utility model is described in detail above.Specific case pair used herein The principles of the present invention and embodiment are expounded, and the above embodiments are only used to help understand, and this is practical new The core concept of type.It should be pointed out that for those skilled in the art, not departing from the utility model principle Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model In scope of protection of the claims.

Claims

1. electromagnetic clutch, including shell (1), driving wheel (2), driven wheel (3) and executing agency, the executing agency includes set Loaded on the magnetic yoke (5) in the shell (1) and it is sheathed on the electromagnetic coil (6) of the magnetic yoke (5) outside, driving wheel (2) axis To being movably sheathed on the transmission shaft (7) connecting with power source, which is characterized in that the executing agency further includes elastic component (4), one end of the driving wheel (2) is accessed the shell (1) and is oppositely arranged with the magnetic yoke (5), the other end and it is described from Driving wheel (3) is oppositely arranged, and elastic component (4) precompressed is shunk between the driving wheel (2) and the shell (1), with pushing tow institute It states driving wheel (2) and is maintained at the working position engaged with the driven wheel (3)；After the electromagnetic coil (6) is powered, the driving wheel (2) elastic force that the elastic component (4) are overcome under the electromagnetism power drive of the magnetic yoke (5) moves to and the driven wheel (3) The working position of disconnect engagement.

2. electromagnetic clutch as described in claim 1, which is characterized in that the driving wheel (2) is equipped with and the transmission shaft (7) The internal spline of cooperation, and the external splines with the driven wheel (3) cooperation.

3. electromagnetic clutch as claimed in claim 2, which is characterized in that the magnetic yoke (5), the driving wheel (2) and described Coaxially, the axial direction of three is parallel with the precommpression direction of the elastic component (4) for driven wheel (3).

4. electromagnetic clutch as claimed in claim 3, which is characterized in that the driving wheel (2) is stepped in axial direction, with shape At path section (21) and major diameter section (22), the path section (21) is inserted in the inner hole of the magnetic yoke (5), the major diameter section (22) It is inserted in the connection inner hole of the driven wheel (3).

5. electromagnetic clutch as claimed in claim 4, which is characterized in that between the path section (21) and the magnetic yoke (5) With radial clearance, so as to the path section (21) can the relatively described magnetic yoke (5) circumferentially rotate.

6. electromagnetic clutch as claimed in claim 4, which is characterized in that the internal spline is set to the interior of the path section (21) Hole.

7. electromagnetic clutch as claimed in claim 4, which is characterized in that the shaft end of the major diameter section (22) is equipped with diameter contracting portion (221), the external splines is set to diameter contracting portion (221), and the major diameter section (22) is inserted in the company with diameter contracting portion (221) Connect inner hole.

8. electromagnetic clutch as claimed in claim 7, which is characterized in that the inner hole of the driven wheel (3) is axially being in ladder Shape, to form large diameter hole (31) and diameter holes (32), the large diameter hole (31) is used as the connection inner hole, the driven wheel (3) With the diameter holes (32) axial restraint, circumferentially rotationally it is sheathed on the transmission shaft (7).

9. electromagnetic clutch as claimed in claim 4, which is characterized in that the driving wheel (2) is also described small with being connected to Annular end face (23) between diameter section (21) and the major diameter section (22), the shell (1) have and the annular end face (23) The end cap (11) being oppositely arranged, the elastic component (4) is axially preloading to shrink in the end cap (11) and the annular end face (23) Between.

10. electromagnetic clutch as claimed in claim 9, which is characterized in that the magnetic yoke (5) be fixed on the end cap (11) and It is linked together with the shell (1), the shell (1) uses non-magnet material, and axial restraint, circumferential direction are rotationally sheathed on The transmission shaft (7).