CN110630654B - Electromagnetic clutch - Google Patents

Abstract

The invention provides an electromagnetic clutch which comprises an electromagnetic coil shell, an electromagnetic coil, a driving shaft, a driven mechanism, a clutch disc, a plum spline and a spring I, wherein the plum spline is movably arranged on the clutch disc and extends out of the end face of the clutch disc, a rotary disc in the driven mechanism is sleeved at the end part of the driving shaft through a bearing, the spring I is arranged between the rotary disc and the clutch disc, a circular ring is rotatably arranged on the rotary disc, a clockwork spring is arranged in the rotary disc, the inner ring and the outer ring of the clockwork spring are respectively and fixedly connected with the rotary disc and the circular ring, and at least two locking mechanisms are arranged on the rotary. The clutch is realized by the butt joint of the plum spline and the butt joint groove which are movably arranged on the clutch disc, and the spring is arranged between the plum spline and the clutch disc, so that the friction between the plum spline and the ring when the plum spline is not in butt joint with the butt joint groove can be effectively eliminated, the flexible connection between the turntable and the ring is facilitated, and the rigid impact on each part caused by the large transmission torque can be avoided.

Description

Electromagnetic clutch

Technical Field

The invention relates to the technical field of clutches, in particular to an electromagnetic clutch.

Background

The publication No. CN103437878B provides a heavy truck torsional damping electromagnetic clutch assembly, in which a fan connection disc is divided into a fan driving connection disc and a fan driven connection disc, and a pressure spring for damping is disposed in a cavity formed between the fan driving connection disc and the fan driven connection disc, so that when the high-speed and low-speed states are switched, the pressure spring is compressed only by pressure and does not fall off from the cavity, thereby improving the stability of the pressure spring during damping.

Disclosure of Invention

The present invention is directed to an electromagnetic clutch to solve the above problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an electromagnetic clutch, includes solenoid casing, solenoid, drive shaft, follower, separation and reunion disc, plum blossom spline and spring I, solenoid sets up in solenoid casing, separation and reunion disc movable mounting is in solenoid casing, be equipped with the key tooth in the drive shaft and be equipped with the keyway with the key tooth adaptation on the separation and reunion disc, the drive shaft setting in the separation and reunion disc and the key tooth agrees with the keyway, wherein:

the plum spline is movably arranged on the clutch disc and extends out of the end surface of the clutch disc;

driven mechanism includes carousel, ring, clockwork spring and locking mechanism, the carousel passes through the bearing housing and establishes the tip at the drive shaft, is equipped with spring I between carousel and the separation and reunion disc, the ring rotates and installs on the carousel, the clockwork spring sets up in the carousel, and wherein the inner and outer lane of clockwork spring respectively with carousel and ring fixed connection, has two at least locking mechanism sets up the position that is used for restricting the ring on the carousel.

Preferably, the tip of plum blossom spline is equipped with the installation pole, the installation pole clearance fit on the plum blossom spline is on the separation and reunion disc, wherein is equipped with spring II between installation pole and the separation and reunion disc.

Preferably, locking mechanism includes support frame, gag lever post and torsional spring, the support frame sets up the tip at the carousel, and the gag lever post rotates through the round pin axle and installs on the support frame, and wherein gag lever post and ring contact, the torsional spring cover is established at the round pin epaxial of installation gag lever post, and the one end of torsional spring extends to in the round pin axle of installation gag lever post, the other end extends to in the support frame.

Preferably, the circular ring is provided with a butt joint groove and a limiting groove which are matched with the quincuncial key.

Preferably, the plum-shaped spline is centered with the butt-joint groove on the circular ring.

Preferably, the limiting rod is arranged in a limiting groove on the circular ring.

Preferably, the supporting frame is provided with a baffle, and the limiting rod is in contact with the baffle and used for limiting the rotation angle of the limiting rod.

Compared with the prior art, the invention has the beneficial effects that:

the clutch disc is movably arranged on the clutch disc, the plum spline is in butt joint with the butt joint groove, the spring is arranged between the plum spline and the clutch disc, friction between the plum spline and the circular ring when the plum spline is not in butt joint with the butt joint groove can be effectively eliminated, flexible connection between the rotary disc and the circular ring is facilitated, rigid impact on each part caused by large transmission torque can be avoided, the clutch disc and the circular ring are still in rigid connection after the rigid impact is eliminated under the action of the locking mechanism, and transmission accuracy can be further guaranteed.

Drawings

FIG. 1 is a three-dimensional schematic of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

FIG. 3 is a three-dimensional schematic view of the locking mechanism of the present invention;

FIG. 4 is a cross-sectional view of the locking mechanism of the present invention;

fig. 5 is a schematic view of a portion a of fig. 3.

In the figure: 1, 2 solenoid coils, 3 drive shafts, 4 driven mechanisms, 5 clutch discs, 6 plum splines, 7 springs I, 41 turntables, 42 rings, 43 clockwork springs, 44 locking mechanisms, 421 butting grooves, 422 limiting grooves, 441 support frames, 442 limiting rods, 443 torsion springs, 4411 baffles, 61 mounting rods and 62 springs II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 5, the present invention provides a technical solution:

the utility model provides an electromagnetic clutch, includes solenoid casing 1, solenoid 2, drive shaft 3, follower 4, separation and reunion disc 5, plum blossom key 6 and spring I7, wherein:

the electromagnetic coil 2 is arranged in the electromagnetic coil shell 1 and used for realizing the generation of electromagnetism, the clutch disc 5 is movably arranged in the electromagnetic coil shell 1, wherein the clutch disk 5 can move along the circumferential direction and the axial direction of the electromagnetic coil shell 1, the driving shaft 3 is provided with key teeth, the clutch disk 5 is provided with a key slot matched with the key teeth, the driving shaft 3 is arranged in the clutch disk 5, the key teeth are matched with the key slot, therefore, the clutch disc 5 can move along the axial direction of the driving shaft 3, the plum spline 6 is movably arranged on the clutch disc 5 and extends out of the end surface of the clutch disc 5, the end part of the plum spline 6 is provided with a mounting rod 61, the mounting rod 61 on the plum spline 6 is movably matched on the clutch disc 5, a spring II 62 is arranged between the mounting rod 61 and the clutch disc 5, the quincuncial key 6 and the butt joint groove 421 on the circular ring 42 are in alignment, and the quincuncial key 6 can be in butt joint with the butt joint groove 421 to achieve a transmission effect;

the driven mechanism 4 comprises a rotary disc 41, a circular ring 42, a clockwork spring 43 and locking mechanisms 44, the rotary disc 41 is sleeved at the end part of the driving shaft 3 through a bearing, a spring I7 is arranged between the rotary disc 41 and the clutch disc 5, and further the rebounding of the clutch disc 5 can be realized, the circular ring 42 is rotatably installed on the rotary disc 41, the circular ring 42 is provided with a butt joint groove 421 and a limiting groove 422 which are matched with the plum-blossom-shaped key 6, wherein the plum-blossom-shaped key 6 and the butt joint groove 421 are consistent in number and the adjacent angles are the same, the clockwork spring 43 is arranged in the rotary disc 41, the inner ring and the outer ring of the clockwork spring 43 are respectively fixedly connected with the rotary disc 41 and the circular ring 42, so that the clockwork spring 43 can realize the buffering effect as an elastic component, at least two locking mechanisms 44 are arranged on the rotary disc 41 and used, The support frame 441 is fixedly installed at the end portion of the rotating disc 41, the support frame 441 is provided with a baffle 4411, the limit rod 442 is rotatably installed on the support frame 441 through a pin shaft and is in contact with the baffle 4411, the baffle 4411 is arranged on one side of the support frame 441, so that the limit rod 442 can move towards the direction without the baffle 4411, the limit rod 442 is located in the limit groove 422 on the ring 42, the torsion spring 443 is sleeved on the pin shaft where the limit rod 442 is installed, one end of the torsion spring 443 extends into the pin shaft where the limit rod 442 is installed, and the other end of the torsion spring extends into the support frame 441.

The working principle of the invention is as follows: wherein, the rotating disc 41 is used as a final transmission component to transmit to an externally connected component;

when the clutch is in a connected state, the electromagnetic coil 2 is electrified to generate an electromagnetic force at the clutch disc 5, at this time, the clutch disc 5 moves towards a direction close to the ring 42, because the clutch disc 5 is in a rotating state, when the ring 42 is in contact, the plum spline 6 on the clutch disc 5 cannot directly enter the butt-joint groove 421 on the ring 42, and at this time, the clutch disc 5 still has a tendency of moving towards the ring 42 under the action of the electromagnetic force, therefore, the plum spline 6 contracts towards the inside of the clutch disc 5, further, the rigid friction between the plum spline 6 and the ring 42 due to the existence of the electromagnetic force is effectively avoided, when the plum spline 6 and the butt-joint groove 421, the spring II 62 at the rear side of the plum spline 6 pushes the plum spline to enter the butt-joint groove 421, at this time, the rotating clutch disc 5 and the ring 42 are in butt-joint, and at this time, the ring 42 rotates along with the plum spline, because the clockwork spring 43 is arranged between the circular ring 42 and the rotating disc 41, the rotating disc 41 cannot be directly driven to rotate at the moment of rotation of the circular ring 42, but the clockwork spring 43 eliminates the rigid impact caused by torque at the moment of starting, the rotating disc 41 can slowly rotate, the supporting frame 441 on the rotating disc 41 rotates along with the rotating disc, the limiting rod 442 has a rotating movement trend under the action of the torsion spring 443, and the clockwork spring 43 stores energy when the circular ring 42 rotates, so that the rotating speed of the circular ring 42 is greater than that of the rotating disc 41 at the moment, the limiting rod 442 can enter the limiting groove 422 on the circular ring 42, the limiting rod 442 is in contact with the limiting groove 422 at the moment, the baffle 4411 can continuously rotate at the moment when the circular ring 42 continues to rotate, and therefore, the fixed connection between the circular ring 42 and the rotating disc 41 is realized, and the normal power output is realized at the moment;

when the clutch is in a disconnected state, the electromagnetic coil 2 is powered off, the clutch disc 5 moves towards a direction far away from the circular ring 42 under the action of the spring I7, the plum spline 6 is separated from the butt joint groove 421, the elastic potential energy stored in the clockwork spring 43 needs to be released when the clutch is in a connected state, the circular ring 42 rotates, the circular ring 42 and the rotary disc 41 rotate mutually at the moment, the limiting rod 442 has a movement trend of being separated from the limiting groove 422, the limiting rod 442 rotates towards the reverse direction of the baffle 4411 and can be separated from the limiting groove 422, the torsion spring 443 can charge when the limiting rod 442 rotates, and the limiting rod 442 slides into the limiting groove 422 to provide elastic potential energy when the clutch is connected again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides an electromagnetic clutch, includes solenoid casing (1), solenoid (2), drive shaft (3), follower (4), separation and reunion disc (5), plum blossom key (6) and spring I (7), solenoid (2) set up in solenoid casing (1), separation and reunion disc (5) movable mounting is in solenoid casing (1), be equipped with the key tooth on drive shaft (3) and be equipped with the keyway with the key tooth adaptation on separation and reunion disc (5), drive shaft (3) set up in separation and reunion disc (5) and the key tooth agrees with its characterized in that with the keyway: the plum spline (6) is movably arranged on the clutch disc (5) and extends out of the end surface of the clutch disc (5); the driven mechanism (4) comprises a rotary disc (41), a circular ring (42), a clockwork spring (43) and locking mechanisms (44), the rotary disc (41) is sleeved at the end part of the driving shaft (3) through a bearing, a spring I (7) is arranged between the rotary disc (41) and the clutch disc (5), the circular ring (42) is rotatably installed on the rotary disc (41), the clockwork spring (43) is arranged in the rotary disc (41), the inner ring and the outer ring of the clockwork spring (43) are respectively fixedly connected with the rotary disc (41) and the circular ring (42), and at least two locking mechanisms (44) are arranged on the rotary disc (41) and used for limiting the position of the circular ring (42); an installation rod (61) is arranged at the end part of the plum spline (6), the installation rod (61) on the plum spline (6) is movably matched on the clutch disc (5), and a spring II (62) is arranged between the installation rod (61) and the clutch disc (5); the circular ring (42) is provided with a butt joint groove (421) and a limiting groove (422) which are matched with the plum spline (6); the plum spline (6) and the butt joint groove (421) on the circular ring (42) are centered.

2. An electromagnetic clutch according to claim 1 wherein: locking mechanism (44) include support frame (441), gag lever post (442) and torsional spring (443), support frame (441) set up the tip at carousel (41), and gag lever post (442) rotates through the round pin axle and installs on support frame (441), wherein gag lever post (442) and ring (42) contact, torsional spring (443) cover is established on the round pin axle of installation gag lever post (442), and the one end of torsional spring (443) extends to in the round pin axle of installation gag lever post (442), the other end extends to in support frame (441).

3. An electromagnetic clutch according to claim 2 wherein: the limiting rod (442) is positioned in a limiting groove (422) on the circular ring (42).

4. An electromagnetic clutch according to claim 2 wherein: the supporting frame (441) is provided with a baffle (4411), and the limiting rod (442) is in contact with the baffle (4411) and used for limiting the rotation angle of the limiting rod (442).

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