JPH10196684A - Electromagnetic micro clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change a taking out position for a lead wire freely so as to use a component in common by arranging a holding means which clamps the lead wire pulled out from the inside of a clutch main body to the outside along a field outer circumference part. SOLUTION: An electromagnetic micro clutch main body 1 is provided with a field 2 serving as an outer circumference member, and a rotation stopper 3 arranged on the end face side of a clutch is constructed with the field 2 integrally so as to prevent the clutch main body 1 from rotating to a counterpart member. A lead wire holding member 6 works as a holding means which clamps a lead wire 5 pulled out from the outer circumference part of the field 2 so as to pull it around the rotation stopper 3 side, and on the inner circumferential face of the lead wire holding member 6, a recess groove used for guiding the lead wire 5 along the field outer circumferential face is formed, so that the lead wire taking out direction is decided. As to the recess groove, two recess grooves 6a, 6d are arranged in the axial direction of the lead wire holding member, and alteration of a lead wire taking out position can be facilitated when a circumferential recess groove 6c is arranged between the recess grooves 6a, 6d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic micro clutch having lead wire holding means.

[0002]

2. Description of the Related Art In a conventional electromagnetic micro clutch in which a detent is integrally formed with a field and an electromagnetic micro clutch body, a power supply lead wire connected to a coil wound on a bobbin and drawn out of the main body. The take-out position varies depending on the shape of the bobbin or the field, but is generally taken out from the outer peripheral surface of the field or the thrust end surface of the cylindrical main body.

[0003]

However, in the conventional electromagnetic micro clutch, since the lead wire take-out position is fixed, there is a rotating member, a sheet metal edge, etc. near the mating member to which the electromagnetic micro clutch is attached. In such a case, the coating of the lead wire may be damaged, and an electrical trouble such as disconnection or short circuit may occur. In order to prevent such electrical troubles, it was necessary to prepare multiple types of electromagnetic micro clutches of the same specifications, but only the lead wire take-out position was changed according to the place of use. .

[0004] For this reason, parts that differ only in the lead wire take-out position are required, and the number of common parts used in the electromagnetic micro clutch is reduced, and the number of manufactured items is increased. .

The problem to be solved by the present invention is that the position of taking out the lead wire can be freely changed, the components of the electromagnetic micro clutch body can be shared, the electromagnetic micro clutch is inexpensive, and can be mounted in various patterns. Is to provide a clutch.

[0006]

According to a first aspect of the present invention, there is provided an electromagnetic micro clutch in which a field of an electromagnetic micro clutch and a detent portion of an electromagnetic micro clutch body are integrally formed. Cylindrical holding means for holding a lead wire drawn out from the inside of the electromagnetic micro clutch body to the outside along the outer peripheral portion of the field is provided, and the drawing direction of the lead wire is made variable by the holding means. The invention according to claim 2 relates to an electromagnetic micro clutch
2. The electromagnetic micro clutch according to claim 1, wherein the cylindrical holding means is a cylindrical holding means having one or more concave grooves on an inner peripheral surface thereof. 3. The electromagnetic micro clutch according to claim 1, wherein the cylindrical holding means is provided with engaging means for engaging with the electromagnetic micro clutch body on a circumferential surface thereof. It is about.

[0007]

FIG. 1 is a drawing showing an embodiment of an electromagnetic micro clutch which best illustrates the features of the present invention. In FIG. 1, 1 is an electromagnetic micro clutch body,
Reference numeral 2 denotes a field which is an outer peripheral member, 3 denotes a detent provided on an end face side of the electromagnetic micro clutch, and is integrally formed with the field 2 to prevent rotation of the electromagnetic micro clutch 1 with respect to a counterpart member. A lead wire outlet 5 is a lead wire, and 6 is a lead wire holding member as a holding means for holding the lead wire 5 drawn out from the outer peripheral portion of the field 2 and routing it to the detent 3 side. A concave groove 6a for guiding the lead wire 5 along the outer peripheral surface of the field 2 is formed on the peripheral surface, and determines the direction in which the lead wire is taken out. The lead wire holding member 6 has a groove 6b formed in one end of the lead wire holding member 6 in a circumferential direction as a means for engaging with the main body of the electromagnetic micro clutch 1 so as to engage with the detent 3. Thus, the lead wire holding member is restricted from rotating in the circumferential direction.

FIG. 1 shows an example in which a concave groove for arranging a lead wire in an axial direction on an inner peripheral surface of a cylindrical lead wire holding member fitted into a field is provided as a lead wire holding means. The means for holding the lead wire is not limited to this.

Although only one groove may be provided in the inner peripheral surface of the lead wire holding member in the axial direction of the inner peripheral surface, FIG.
As shown in (2), two (6a, 6d) are provided in the axial direction of the inner peripheral surface of the lead wire holding member, and these axial grooves 6a, 6b are provided.
By providing the concave groove 6c in the circumferential direction, it is easy to change the lead wire withdrawal position.

FIG. 1 shows a case where the lead wire 5 is taken out from the side surface of the field 2, that is, the state of 5 a shown by a two-dot chain line, in three directions of rotation stop. By providing the grooves 6a, 6d and 6c, as shown in FIG. 2, the lead wire 5 can also be taken out from the rotation stop 6d in three directions via the recess 6c of the lead wire holding member.

FIGS. 3 and 4 show an electromagnetic micro clutch 1.
The lead wire outlet 4 is provided on the detent 3 side, and the lead wire 5 is passed through the concave groove 6d provided in the lead wire holding member 6 in the same manner as in FIGS. Alternatively, it can be taken out on the side of the groove 6a opposite to the detent 3 via the groove 6c.

Therefore, the positions and numbers of the concave grooves 6a, 6c, 6d provided on the inner peripheral surface of the lead wire holding member 6 can be freely set.

As shown in FIGS. 1 to 4, the electromagnetic micro clutch 1 of the present invention can be used to pull out the lead wire 5 regardless of whether the lead outlet 4 is on the side surface of the field 2 or on the side of the detent 3. Since the direction can be changed, even if there is a member that may damage the coating of the lead wire 5 in the vicinity of the lead wire outlet 4 of the electromagnetic micro clutch 1, the member can be changed by changing the lead wire drawing direction. Such members can be avoided.

FIG. 5 is a view showing an embodiment in which the cylindrical holding means is provided with engaging means for engaging with the electromagnetic micro-clutch main body, and is a view showing a single-piece state of the lead wire holding member 6. is there. By providing a concave portion 6b as an engagement means on the circumferential surface of the lead wire holding member 6, the lead wire holding member 6 is engaged with the detent 3 of the electromagnetic micro clutch, and the rotation of the lead wire holding member 6 is prevented. Be regulated.

Therefore, a concave portion 6b provided on the circumferential surface of the lead wire holding member 6 as an engagement means with the detent 3 of the electromagnetic micro clutch is formed on the lead wire take-out port 4 side and engages with this. It is also possible to restrict the rotation.

FIG. 6 shows a retaining portion (cross-sectional view taken along the arrow AA) of the lead wire holding member 6 in the thrust direction. The inside of the wall 6e at both ends of the concave groove 6b engaging with the detent 3 is shown. An elastic claw portion 6f is formed on the main body of the electromagnetic micro clutch so as to prevent the electromagnetic micro clutch from coming off.

The same effect can be obtained by preventing the lead wire take-out portion from having a convex shape.

[0018]

As described above, according to the present invention,
Just by attaching the lead wire holding member to the outer periphery of the field, the lead wire take-out position can be changed freely,
It is possible to provide a clutch in which the clutch body can be shared, which is inexpensive under the effect of mass production, and which can be mounted in various patterns.

Further, since the lead wire is protected on the outer peripheral surface of the field by the lead wire holding member, the damage to the lead wire and the tensile strength of the lead wire are improved.

[Brief description of the drawings]

FIG. 1 is a view for explaining a first pattern of lead wire extraction according to an electromagnetic micro clutch of the present invention.

FIG. 2 is a view for explaining a second pattern of lead wire extraction according to the electromagnetic micro clutch of the present invention.

FIG. 3 is a view for explaining a third pattern of lead wire extraction according to the electromagnetic micro clutch of the present invention.

FIG. 4 is a view for explaining a fourth pattern of lead wire extraction according to the electromagnetic micro clutch of the present invention.

FIG. 5 is a view showing a single-piece state of a lead wire holding member of the electromagnetic micro clutch of the present invention.

FIG. 6 is a diagram showing details of a retaining portion of a lead wire holding member of the electromagnetic micro clutch of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electromagnetic micro clutch main body 2 ... Field 3 ... Non-rotating 4 ... Lead wire outlet 5 ... Lead wire 6 ... Lead wire holding member

Claims (3)

[Claims] 1. An electromagnetic micro-clutch in which a field of the electromagnetic micro-clutch and a detent portion of the electromagnetic micro-clutch main body are integrally formed, a lead wire drawn out from the inside of the electromagnetic micro-clutch main body to an outer periphery of the field. An electromagnetic micro clutch, comprising: a cylindrical holding means for being held along a portion, wherein the holding means makes a lead wire withdrawal direction variable. 2. The method according to claim 1, wherein the cylindrical holding means is a cylindrical holding means provided with one or a plurality of grooves for changing a lead wire drawing direction on an inner peripheral surface thereof. The electromagnetic micro clutch according to claim 1. 3. The electromagnetic micro clutch according to claim 1, wherein the cylindrical holding means is provided with an engagement means for engaging with the electromagnetic micro clutch body.