JP4126141B2 - General-purpose electromagnetic clutch mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic clutch mechanism sliding the drive input side of the gear or the like to the electromagnetic operation moving the thus driven portion side, to a general-purpose type electromagnetic clutch mechanism particularly suited to the change of the driving input portion.
[0002]
[Prior art]
As a conventional clutch mechanism, an electromagnetic clutch is known that includes an armature (electromagnetic coil) as an excitation means on a drive output shaft that is a driven portion, and connects the drive input side via an amateur portion. The configuration of a conventional electromagnetic clutch will be described with reference to FIG.
[0003]
As shown in the exploded perspective view of FIG. 4, the electromagnetic clutch is supported by a clutch body A, a drive output shaft B that is rotatably supported by the clutch body A, and the other end of the drive output shaft B. And the drive output shaft B.
[0004]
The clutch body A holds the armature 2 on the outer periphery of the cylindrical portion of the inner pole 3 , which is covered with a casing 5 with a coil cover 4 attached thereto. The drive output shaft B is pivotally supported by the rotor 8 and penetrates the inner pole 3 of the clutch body A in the thrust direction, and is rotatably supported by the pair of bearings 6a and 6b with respect to the clutch body A. The other end of the drive output shaft B is supported by a gear as the armature unit 1 and the drive input unit C. The drive input portion C is supported by the drive output shaft B so as to be integrated with the armature portion 1, and curlers 11 are attached to both ends thereof. Thus, the drive input section C side and the clutch body A side are unitized. In the armature portion 1, the transmission member 1 a is attached integrally to the drive input portion C side together with the magnet sheet 1 b, and the sliding surface 1 c of the transmission member 1 a is adjacent to the rotor 8 on the drive output shaft B. When the armature 2 is energized, the electromagnetic force causes the transmission member 1a to move in the thrust direction and contact the rotor 8, and the rotation of the drive input portion C (gear) is transmitted to the drive output portion B. ing.
[0005]
As in this example, in the conventional clutch mechanism, the clutch main body A and the drive input portion C are integrated by a dedicated armature portion 1, and these are provided as one clutch unit.
[0006]
[Problems to be solved by the invention]
However, in the configuration such as the conventional clutch unit, the drive input unit C and the armature unit 1 are integrated into a product, so that it is necessary to manage the unit including the gear that is the drive input unit C as a unit. It was happening.
[0007]
For example, when the drive input unit C is replaced with one having different gear teeth, it is necessary to manufacture new parts for each of the various gear teeth in the armature unit 1 and the like. In this case, a clutch unit to be managed for each gear tooth is generated, and the number of lots is increased.
[0008]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a general-purpose electromagnetic clutch mechanism that can easily replace the drive input unit and reduce the management burden and cost in parts or units associated with the change of the drive input unit. is there.
[0009]
[Means for Solving the Problems]
The electromagnetic clutch mechanism of the present invention made to achieve the above object includes an inner pole having a cylindrical portion, an electromagnetic coil held on the outer periphery of the cylindrical portion of the inner pole, and the cylindrical portion of the inner pole. The shaft is fixed to the drive output shaft that is rotatably supported by bearings at both ends of the cylindrical portion and the drive output shaft that protrudes from one side of the cylindrical portion of the inner pole. An arm portion having a rotor, a transmission member, and a magnet sheet; and a gear serving as a drive input portion that is rotatably connected to the arm portion and rotatably supported on the drive output shaft. Is moved in the thrust direction by electromagnetic force generated by energization of the electromagnetic coil, the sliding surface of the transmission member contacts the rotor, and the rotation of the gear is transmitted to the drive output unit. Energizing the coil By the magnetic force of the magnet sheet during off met electromagnetic clutch mechanism serial sliding surface before the transmission member is moved in the thrust direction to block the transmission of rotation of said gears to the drive output portion is spaced from the rotor The armature portion is rotatably supported on the drive output shaft so that the transmission member can be thrust-moved in a direction in which the transmission member contacts or separates from the rotor, and a surface of the transmission member that faces the gear, An engaging convex portion concentrically projecting in the thrust direction is formed, and the engaging convex portion of the transmission member fitted in the hollow concave portion is formed in a cylindrical hollow concave portion concentrically formed in the gear. A plurality of engaging portions having a shape that meshes with a concave portion formed on the peripheral surface of the portion is formed along the inner peripheral surface, and the hollow concave portion of the gear is detachably fitted to the engaging convex portion of the transmission member More is characterized that you said gears and said transmission member is to mesh with the rotational direction on the concentric axis.
[0010]
In the general-purpose electromagnetic clutch mechanism of the present invention, the armature portion is thrust-moved in a direction in which the transmission member contacts or separates from the rotor, separately from the gear of the drive input portion that is rotatably supported on the drive output shaft. Engagement protrusions that are concentrically protruding in the thrust direction are formed on the surface of the transmission member facing the gear, and are concentrically supported by the gear. A plurality of engaging portions are formed along the inner peripheral surface of the cylindrical hollow concave portion formed on the inner peripheral surface so as to mesh with the concave portions formed on the peripheral surface of the engaging convex portion of the transmission member fitted in the hollow concave portion. Since the gear and the transmission member mesh with each other in the rotational direction on the concentric shaft by detachably fitting the hollow recess of the gear to the engagement convex portion of the transmission member, the gear of the drive input unit is set to a different gear. When replacing with a toothed one, Drive output by solving the support on the shaft by moving in the direction to solve the fitting hollow recess of gears for engaging portions of the transmission member, the armature portion supported on the drive output shaft on the drive output shaft Only the gear can be removed from the drive output shaft while leaving it as it is, and the newly installed gear is fitted into the hollow concave portion formed concentrically with the gear except for the gear teeth. The plurality of engaging portions that are in mesh with the concave portions formed on the peripheral surface of the engaging convex portion of the transmission member may have the same simple structure as the gear before replacement.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a view showing a main part of a clutch mechanism provided with an attachment according to the present invention. The figure schematically illustrates the present invention conceptually. The basic structure of this clutch mechanism is substantially the same as that of the electromagnetic clutch shown as the conventional example. The same reference numerals are given to the same components, and the conventional example is referred to for the structure not shown.
[0012]
As shown in FIG. 1, the attachments 9 and 10 have a fitting structure formed concentrically on the drive input portion C and the armature portion 1 on the clutch body A side. The armature portion 1 according to the present invention is rotatably supported on the drive output shaft B, and is integrally attached to the clutch main body A side to form a unit. The armature portion 1 is supported so as to be able to advance and retreat on the drive output shaft B, and is capable of thrust movement in a direction in which the transmission member 1 a contacts or separates from the rotor 8. On the back surface of the sliding surface 1c to which the transmission member 1a is attached, that is, on the surface facing the drive input portion C, the engaging convex portion 9 of the armature portion 1 is formed.
[0013]
When the engagement concave portion 10 of the drive input portion C is attached to the engagement convex portion 9 of the armature portion 1 and driving is input from the drive input portion C, the transmission member 1 a rotates together with the armature portion 1. When the armature 2 of the clutch body A is energized in this state, the armature portion 1 is attracted to the clutch body A side by the magnetic operation so that the sliding surface 1c of the transmission member 1a is attracted to the rotor 8. Touch. As a result, the rotational drive is transmitted from the drive input portion C to the drive output shaft B. When the drive transmission is cut off, if the armature 2 is de-energized, the sliding surface 1c is separated from the rotor 8 by the magnetic force of the magnet sheet 1b included in the armature 1, and the transmission is cut off by returning to the original position. It has become so.
[0014]
FIG. 2 is a diagram illustrating a configuration example of the attachments 9 and 10. In this example, a plurality of engaging portions 10a are formed in a cylindrical hollow recessed portion formed concentrically with the drive input portion C, and a recessed portion 9a having a shape that closely meshes with the shape is formed on the armature portion 1 side. ing. With this fitting structure, the drive input portion C and the armature portion 1 are engaged with each other on the concentric shaft without play in the rotation direction, and the drive input portion C is detachable from the armature portion 1 of the clutch body A.
[0015]
In the clutch unit having the above configuration, when the drive input unit is changed, a large number of drive input units C having the common attachment 10 may be prepared in advance. For example, when using a different gear tooth as the drive input unit C, it is only necessary to raise a gear with an attachment, so that the number of lots and costs to be managed can be reduced.
[0016]
In addition, if a general-purpose clutch unit is used in this way, it is easy to evaluate the specification values and the like. That is, by changing the number of gear teeth in one clutch unit and changing the driving load or the like, it is possible to obtain a secondary effect that a specification value such as a life under each condition can be easily evaluated. In addition, if the drive input unit can be exchanged in this way, for example, specifications described in a catalog or the like can be evaluated by a range instead of a point as in the past.
[0017]
FIG. 3 is an evaluation example in which such a specification value is defined by a range. In the figure, the component life or stop time accompanying an increase in load is an example in which three ranges, namely, a use prohibition range, a limited specification range, and a certified use range can be defined.
[0018]
【The invention's effect】
As described above, in the general-purpose electromagnetic clutch mechanism of the present invention, the armature portion is in contact with the rotor or separated from the gear of the drive input portion that is rotatably supported on the drive output shaft. The gear and the transmission member are concentrically supported by the detachable fitting of the hollow concave portion of the gear to the engagement convex portion of the transmission member so as to be capable of thrust movement in the separating direction. When the gears of the drive input unit are exchanged with gear teeth having different gear teeth , the support of the gears on the drive output shaft is released to the engagement convex portion of the transmission member. By moving in the direction in which the hollow recess of the gear is unmated, the arm portion supported on the drive output shaft can be left on the drive output shaft as it is, and only the gear can be removed from the drive output shaft, New installation The gear is a plurality of cylindrical hollow recesses formed concentrically with the gear except for the gear teeth, and a plurality of shapes meshing with the recesses formed on the peripheral surface of the engagement convex portion of the transmission member fitted in the hollow recess. Since the engagement part can be the same simple structure as the gear before replacement, it is easy to change the drive input part , and the drive input part of one unit can be replaced frequently, improving the evaluation performance of specifications, etc. In addition, it is not necessary to generate a new product including the amateur part, and the management load and cost generated for each unit are reduced.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a main part of a general-purpose electromagnetic clutch mechanism according to an embodiment.
FIGS. 2A and 2B are diagrams showing a configuration example of an attachment according to the present embodiment, in which FIG. 2A is a transverse sectional view of the attachment in a meshed state, and FIG. 2B is a longitudinal sectional view in a separated state; .
FIG. 3 is a diagram showing an evaluation example of specification values using the general-purpose electromagnetic clutch mechanism of the present embodiment.
FIG. 4 is an exploded perspective view illustrating a conventional electromagnetic clutch mechanism.
[Explanation of symbols]
A Clutch body B Drive output shaft (driven part)
C drive input part 1 amateur part 1a transmission member 1b magnet sheet 2 armature (electromagnetic coil)
8 Rotor part 9 and 10 Attachment

Claims (1)

An inner pole having a cylindrical portion, an electromagnetic coil held on the outer periphery of the cylindrical portion of the inner pole, and the cylindrical portion of the inner pole penetrate in the thrust direction, and are respectively supported at both ends of the cylindrical portion. A drive output shaft supported rotatably, a rotor fixed to the drive output shaft protruding from one side of the cylindrical portion of the inner pole, an armature portion having a transmission member and a magnet sheet; A gear serving as a drive input unit that is rotationally connected to the armature unit and rotatably supported on the drive output shaft, and the armature unit has a thrust direction by an electromagnetic force generated by energizing the electromagnetic coil. The sliding surface of the transmission member is in contact with the rotor to transmit the rotation of the gear to the drive output portion, and in the thrust direction by the magnetic force of the magnet sheet when the electromagnetic coil is turned off. Transfer An electromagnetic clutch mechanism whose serial sliding surface before the transmission member is to cut off the transmission of rotation of said gears to the drive output portion is spaced from said rotor,
The armature portion is rotatably supported on the drive output shaft so that the transmission member can perform thrust movement in a direction in which the transmission member comes into contact with or separates from the rotor.
An engaging convex portion concentrically protruding in the thrust direction is formed on the surface of the transmission member facing the gear, and is fitted into the hollow concave portion formed concentrically with the gear. A plurality of engaging portions having a shape that meshes with a concave portion formed on a peripheral surface of the engaging convex portion of the transmission member that is combined are formed along an inner peripheral surface, and the engaging convex portion of the transmission member with respect to the engaging convex portion is formed. By the detachable fitting of the hollow recess of the gear, the gear and the transmission member mesh with each other in the rotational direction on the concentric shaft.
Generic type electromagnetic clutch mechanism, wherein the this.

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