JP2005166460A - Rotary electric component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary electric component which can reduce the torque of operating physical force at the time of rotation of the component by reducing generation of friction between a bearing part (a cylindrical body) and a rotary body (an axial part) as little as possible at the time of rotation of the rotary body. <P>SOLUTION: The rotary electric component is equipped with a housing 1 having the bearing part 1c arranged so as to stand in the center in a cylindrical shape, a rotary member 4 having a cylindrical rotary part 4b which is rotatably engaged in the bearing part 1c, a signal detecting means for outputting an electric signal accompanying the rotation of the rotary member 4, and an inclined part 1d which is composed of a slope and formed on an engaging face between the bearing part 1c and the cylindrical rotary part 4b. Engaging faces of the bearing part 1c and the cylindrical rotary part 4b are oppositely disposed at a predetermined angle to each other. When the rotary member 4 rotates, the engaging faces of the bearing part 1c and the cylindrical rotary part 4b are made to partly slide to each other by the inclined part 1d when the rotary member 4 rotates. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a small rotary electric component used for menu selection of a portable electronic device, and more particularly to a bearing structure of the rotary electric component.

  The structure of a conventional rotary electric component includes a synthetic resin wafer, a synthetic resin rotor rotatably mounted on the wafer, a metal plate cover attached to the upper portion of the wafer, and a wafer. And a contact switching mechanism that generates a pulse signal in a combination of the rotor and a click mechanism that generates a click feeling is known (for example, see Patent Document 1).

  Hereinafter, the structure of a conventional rotating electrical component will be described with reference to the drawings. FIG. 8 is a cross-sectional view showing the structure of a conventional rotating electrical component.

  In the figure, an opening 54 is provided at the center of the wafer 51, and a cylinder 55 is erected around the opening 54. An uneven portion 56 for click is formed at the lower portion of the cylindrical body 55. Further, an outer ring wall 57 is erected on the outer peripheral edge of the wafer 51, and a common and phase pattern (not shown) is disposed in the inner groove 58, and a terminal 62 is led out from each pattern.

  The rotor 52 includes a cylindrical shaft portion 63 and a ring-shaped holding portion 64, and the inner peripheral surface of the shaft portion 63 is guided by the upper peripheral surface of the cylindrical body 55 and is rotatably connected to the wafer 51. . Further, a click spring 65 having a protrusion at the center is locked to the holding portion 64, and this protrusion is elastically provided on the uneven portion 56. Further, a slider (not shown) is fixed to the lower surface of the holding portion 64, and a contact point provided at the tip of the slider is arranged in the concave groove 58. It touches the pattern.

  The cover 53 is fixed to the upper surface of the outer ring wall 57 of the wafer 51 and covers the upper end of the concave groove 58. Further, the holding portion 64 of the rotor 52 is in sliding contact with the lower surface of the cover 53, and the rotor 52 is prevented from coming off.

  When the shaft portion 63 of the rotor 52 is rotated, the slider fixed to the lower surface of the holding portion 64 slides on the common and phase pattern disposed in the concave groove 58 and a pulse waveform is output. . Then, by determining this pulse waveform, the rotation direction and the rotation amount of the rotor 52 are detected. At this time, when the protrusion of the click spring 65 and the concavo-convex portion 56 provided at the lower portion of the cylindrical body 55 are engaged and disengaged, a click feeling is generated.

JP-A-10-199371

  However, in the conventional rotary electrical component, the inner peripheral surface of the shaft portion 63 of the rotor 52 rotatably mounted on the wafer 51 is guided by the upper peripheral surface of the cylindrical body 55 of the wafer 51 so as to rotate. Since the shaft portion 63 and the cylindrical body 55 are formed in the same cylindrical shape, the two portions are rubbed in a state where the surfaces are in surface contact with each other when rotating. Therefore, there has been a problem that rotational torque is generated due to contact friction and the operating force becomes heavy.

  Therefore, the present invention solves the above-described problems, and reduces the occurrence of contact friction between the bearing (cylinder) and the rotating body (shaft) as much as possible when the rotating body rotates, thereby reducing the operating force during rotation. An object of the present invention is to provide a rotary electric component capable of reducing the torque.

  In order to solve the above-mentioned problems, the present invention provides, as a first solving means, a housing having a bearing portion erected in a circular shape at the center, and a cylindrical rotating portion that is rotatably engaged with the bearing portion. A rotating member having a signal, and a signal detecting means for outputting an electric signal as the rotating member rotates, and an inclined portion made of an inclined surface is formed on the engagement surface between the bearing portion and the cylindrical rotating portion. The engaging surfaces of the bearing portion and the cylindrical rotating portion are opposed to each other with a predetermined angle, and when the rotating member rotates, the bearing portion and the cylindrical rotation are caused by the inclined portion. It was set as the structure which slid only in a part of engagement surface with a part.

Further, as a second solution, a tapered inclined portion is formed on the outer peripheral surface of the bearing portion, and is engaged with the inner peripheral surface of the cylindrical rotating portion of the rotating member on the base side of the inclined portion. The configuration is as follows.
Further, as a third solution, a tapered inclined portion is formed on the inner peripheral surface of the cylindrical rotating portion of the rotating member, and is engaged with the outer peripheral surface of the bearing portion on the base side of the inclined portion. The configuration is as follows.

As a fourth solution, a tapered inclined portion is formed on the outer peripheral surface of the bearing portion, and is engaged with the inner peripheral surface of the cylindrical rotating portion of the rotating member on the tip side of the inclined portion. The configuration was as follows.
Further, as a fifth solution, a tapered inclined portion is formed on the inner peripheral surface of the cylindrical rotating portion of the rotating member, and is engaged with the outer peripheral surface of the bearing portion on the tip side of the inclined portion. The configuration was as follows.
As a sixth solving means, the inclined portion is formed at an inclination angle equal to or greater than the die taper of the mold.

As described above, the rotating electrical component of the present invention includes a housing having a bearing portion that is erected in a circular shape at the center, and a rotating member having a cylindrical rotating portion that is rotatably engaged with the bearing portion. And a signal detecting means for outputting an electric signal in accordance with the rotation of the rotating member, and forming an inclined portion formed of an inclined surface on the engaging surface between the bearing portion and the cylindrical rotating portion, and rotating the bearing portion and the cylindrical rotation When the rotating member rotates with the engaging surfaces of the bearing portions facing each other at a predetermined angle, the inclined portion slides only on a part of the engaging surfaces of the bearing portion and the cylindrical rotating portion. Therefore, when the rotating member rotates, it forms a knife edge contact by points when the rotating member rotates by forming an inclined portion on the engagement surface between the bearing portion and the cylindrical rotating portion. Since the engagement surfaces do not contact each other, contact between the bearing portion and the cylindrical rotating portion For possible occurrence of friction to a minimum, the operation force can be made close to the rotational torque of the rotating member to the zero is reduced.
In addition, since it is not necessary to add additional parts, it is possible to cope with low cost.

In addition, since a tapered inclined portion is formed on the outer peripheral surface of the bearing portion, and the base portion side of the inclined portion is engaged with the inner peripheral surface of the cylindrical rotating portion of the rotating member, the tapered portion is formed on the bearing portion. Therefore, it is only necessary to provide the inclined portion, so that the torque can be reduced with a simple configuration.
In addition, since the tapered inclined portion is formed on the inner peripheral surface of the cylindrical rotating portion of the rotating member and is engaged with the outer peripheral surface of the bearing portion on the base side of the inclined portion, the cylindrical shape of the rotating member Since it is only necessary to provide the wide inclined portion in the rotating portion, the torque can be reduced with a simple configuration.

In addition, a tapered inclined portion is formed on the outer peripheral surface of the bearing portion, and is engaged with the inner peripheral surface of the cylindrical rotating portion of the rotating member on the tip side of the inclined portion. Since it is only necessary to provide a wide inclined portion, the torque can be reduced with a simple configuration.
In addition, since the tapered inclined portion is formed on the inner peripheral surface of the cylindrical rotating portion of the rotating member and is engaged with the outer peripheral surface of the bearing portion on the distal end side of the inclined portion, the cylindrical rotation of the rotating member is achieved. Since it is only necessary to provide a tapered inclined portion in the portion, it is possible to reduce the torque with a simple configuration.
In addition, since the inclined portion is formed at an inclination angle equal to or greater than the die taper of the mold, the knife edge contact between the engagement surfaces is ensured and the contact friction can be reduced, so that the torque of the rotating member can be reduced easily. .

  Embodiments of the rotating electrical component of the present invention are shown in FIGS. 1 is a plan view of a rotating electrical component according to the present invention, FIG. 2 is a side view of the rotating electrical component, FIG. 3 is a sectional view of the rotating electrical component, and FIG. 4 is a sectional view of the rotating electrical component viewed from different directions. 5 is a cross-sectional view showing another embodiment of the rotary electrical component, FIG. 6 is a cross-sectional view showing another embodiment of the rotary electrical component, and FIG. 7 is another embodiment of the rotary electrical component. It is sectional drawing shown.

  1 to 4, the housing 1 is made of an insulating material such as a synthetic resin, and has a substantially disk-shaped base portion 1b having an opening 1a at the center, and an annular shape standing outside the opening 1a. It has a bearing part 1c to be used. Further, an inclined portion 1d made of a tapered slope is formed on the outer peripheral surface of the bearing portion 1c, and is formed so that the diameter on the tip side is smaller than the diameter of the base portion of the bearing portion 1c. . In addition, the base portion 1b is provided with an outer peripheral wall portion 1e standing along the outer peripheral edge. From the groove-shaped plane between the outer peripheral wall portion 1e and the bearing portion 1c. A storage portion 1f is formed.

  Further, a pair of engaging projections 1g protrudes on the back side of the base portion 1b with the opening 1a interposed therebetween. The engaging protrusion 1g is inserted into a mounting hole (not shown) on a mounting board such as an electronic device and positioned. A plurality of locking claws 1h are formed on the outer surface of the outer peripheral wall 1d, and a hook 6c of a cover member 6 described later is engaged with the locking claw 1h, so that the cover member 6 is engaged. Is attached to the upper surface side of the housing 1.

  The storage portion 1f is provided with a code pattern 2 formed of a conductive metal plate and arranged in an annular shape along the base portion 1b so as to expose one surface thereof. The code pattern 2 is formed from a combination of a plurality of individual patterns (not shown), and various code signals are output when a contact portion 5a of a slider 5 described later slides on the surface of the code pattern 2. It has become a thing. The code pattern 2 and the slider 5 constitute a signal detection means.

  Further, the base portion of the code pattern 2 is integrally embedded in the inner bottom portion of the housing 1, and the other end side is led out from both opposite side portions of the housing 1 to form an external terminal 2a. Yes. The external terminal 2a is bent at 180 ° at the tip side to form a solder terminal for surface mounting. The external terminal 2a is connected to a circuit pattern on a mounting board (not shown) such as an electronic device and outputs a code signal detected by the slider 5 and the code pattern 2.

  A slightly wider spring accommodating portion 1i is formed at one end of the accommodating portion 1f of the housing 1. The spring accommodating portion 1i is provided with a click spring 3 that is formed of a metal wire and has a torsion coil spring shape. One end of the click spring 3 is locked, and the other end of the click spring 3 is on the free end side. A protrusion (not shown) formed on the abutting portion is brought into contact with a click groove portion 4d of the rotating member 4 to be described later, thereby generating a click feeling when the rotating member 4 is rotated.

  The rotating member 4 is formed in a substantially cylindrical shape with an insulating material such as a synthetic resin, and has a cylindrical rotating portion 4b having an opening 4a in the center, and a disk from the lower outer peripheral edge of the cylindrical rotating portion 4b to the side. And a flange 4c protruding in a shape. The rotating member 4 is rotatably engaged with the outer peripheral surface of the bearing portion 1c of the housing 1 so that the flange portion 4c is accommodated in the accommodating portion 1f.

  At this time, the opening 4a of the rotating member 4, that is, the inner peripheral surface of the cylindrical rotating portion 4b is formed to have substantially the same diameter in the vertical direction. On the other hand, an inclined portion 1d made of a tapered slope is formed on the outer peripheral surface of the bearing portion 1c of the housing 1 with which the cylindrical rotating portion 4b is engaged, and the diameter of the base portion of the bearing portion 1c is set. On the other hand, it is formed so that the diameter on the tip side becomes smaller.

  That is, when the rotating member 4 is engaged with the bearing portion 1c, the engaging surfaces of the bearing portion 1c and the cylindrical rotating portion 4b are opposed to each other with a predetermined angle. When the rotating member 4 rotates around the bearing portion 1c, only a part on the base side of the bearing portion 1c and a portion on the lower surface side of the cylindrical rotating portion 4b are engaged to rotate. It has become. Thus, the tapered inclined portion 1d is formed on the outer peripheral surface of the bearing portion 1c, and is engaged with the inner peripheral surface of the cylindrical rotating portion 4b of the rotating member 4 on the base side of the inclined portion 1d. It has become.

  In this case, the engagement surfaces of the bearing portion 1c and the cylindrical rotating portion 4b have a predetermined inclination angle greater than 2 to 3 degrees, which is the inclination angle of the taper taper at the time of molding the mold. They are opposed to each other with an angle. In this embodiment, the inclination angle is about 5 degrees.

  As described above, by providing the tapered inclined portion 1d in the bearing portion 1c, when the rotating member 4 is rotated, knife edge contact is caused by points, and the engaging surfaces are not in surface contact with each other. ing. Further, since the occurrence of contact friction between the bearing portion 1c and the cylindrical rotating portion 4b can be minimized, the rotating torque of the rotating member 4 can be brought close to zero as much as possible, the torque can be reduced, and the operating force is reduced. Will be.

  In addition, since the inclined portion 1d is formed at an inclination angle equal to or greater than the taper taper at the time of molding the mold, the engagement surfaces are opposed to each other at a large inclination angle, so that the knife edge contact between the engagement surfaces is ensured. Thus, the contact friction can be reduced and the torque of the rotating member 4 can be easily reduced.

  A slider 5 made of a conductive thin metal plate made of spring is fixed to the lower surface of the flange 4c. The slider 5 is formed with a plurality of contact portions 5a, and these contact portions 5a are in sliding contact with the code pattern 2 disposed in the storage portion 1f.

  In addition, a click groove portion 4d made of a concavo-convex cam is formed on the outer peripheral surface of the flange portion 4c, and the rotating member 4 rotates along the outer peripheral surface of the bearing portion 1c of the housing 1. In this case, a protrusion (not shown) of the click spring 3 disposed in the storage portion 1f of the housing 1 comes into contact with the click groove portion 4d to generate a click feeling during rotation. ing.

  The cover member 6 is formed by punching a flat metal plate, and has a substantially annular upper plate portion 6b having an opening 6a in the center, and a plurality of hooks suspended laterally from the upper plate portion 6b. Part 6c. The cover member 6 is placed on the outer peripheral wall portion 1e of the housing 1 in a state where the cylindrical rotating portion 4b of the rotating member 4 is inserted through the opening 6a, and covers the storage portion 1f. The hook portion 6c is attached to the upper surface side of the housing 1 by engaging with the plurality of locking claws 1h formed on the outer surface of the outer peripheral wall portion 1e of the housing.

Next, the operation of the rotating electrical component having the above configuration will be described.
First, when the rotating member 4 is rotated through an operation knob or the like mounted on a panel such as an electronic device (not shown), the cylindrical rotating portion 4b is rotated along the outer peripheral surface of the bearing portion 1c of the housing 1. The At this time, the engagement surface between the cylindrical rotating portion 4b and the bearing portion 1c is such that the lower end portion of the inner peripheral surface of the cylindrical rotating portion 4b and the base portion of the bearing portion 1c are in contact with each other by a knife edge by a point. Since the mating surfaces do not come into surface contact, a light rotation is obtained.

  As the rotating member 4 rotates, the contact portion 5a of the slider 5 fixed to the lower surface of the flange portion 4c of the cylindrical rotating portion 4b is provided in the cord pattern 2 arranged in the housing portion 1f of the housing 1. Various code signals are output by sliding on the surface. Then, this code signal is transmitted to a control circuit of an electronic device (not shown) via the external terminal 2a, and the rotation direction and the rotation amount of the rotating member 4 are detected by determining this code signal.

  Also, at this time, a click groove 3d provided in the housing portion 1f of the housing 1 is inserted into a click groove portion 4d made of an uneven cam provided on the outer peripheral surface of the flange portion 4c of the cylindrical rotating portion 4b. (Not shown) is engaged and disengaged, so that a click feeling during rotation can be obtained.

According to the above-described embodiment, the inclined surface 1d made of an inclined surface is formed on the engaging surface between the bearing portion 1c and the cylindrical rotating portion 4b, and the engaging surface between the bearing portion 1c and the cylindrical rotating portion 4b. When the rotating member 4 is rotated with the surfaces facing each other at a predetermined angle, the inclined portion 1d causes a portion of the engaging surfaces of the bearing portion 1c and the cylindrical rotating portion 4d to be part of each other. When the rotating member 4 rotates, the inclined portion 1d formed of an inclined surface is formed on the engagement surface between the bearing portion 1c and the cylindrical rotating portion 4b. Since the contact between the engaging surfaces is not brought into contact with each other due to the knife edge contact due to the points, the occurrence of contact friction between the bearing portion 1c and the cylindrical rotating portion 4b can be minimized. The torque can be brought close to zero, reducing the operating force It has become.
In addition, since it is not necessary to add additional parts, it is possible to cope with low cost.

  In the above-described embodiment, the housing 1 has a substantially disk-shaped base portion 1b having an opening 1a at the center and a bearing portion 1c standing in an annular shape outside the opening 1a. Although it was set as the structure which can mount other various electronic components, such as a push switch and LED, in the center of this opening part 1a, when it is not necessary to mount other electronic parts, an opening part is not provided in the base | substrate part 1b. Alternatively, the bearing portion may be a clogged shape and may be erected in a cylindrical shape.

  FIG. 5 shows a second embodiment of the rotating electrical component according to the present invention, which is different from the above embodiment in the relationship between the bearing portion 1 c of the housing 1 and the cylindrical rotating portion 4 d of the rotating member 4. The configuration of the inclined portion of the mating surface is partially different. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

That is, in the second embodiment, the inclined portion formed by the inclined surface provided on the engagement surface between the bearing portion 1c of the housing 1 and the cylindrical rotating portion 4d of the rotating member 4 is the inner periphery of the cylindrical rotating portion 4d. The inclined portion 4e is formed on the surface as a sloped portion formed on the inner peripheral surface of the cylindrical rotating portion 4d of the rotating member 4, and has a diameter of the base portion of the inner peripheral surface. On the other hand, the diameter on the tip side is formed to be larger. And it is made to engage with the outer peripheral surface of the said bearing part 1c by the base side of this inclination part 4e.
At this time, the outer peripheral surface of the bearing portion 1c is formed to have substantially the same diameter in the vertical direction.

That is, when the rotating member 4 is engaged with the bearing portion 1c, the engaging surfaces of the bearing portion 1c and the cylindrical rotating portion 4b are opposed to each other with a predetermined angle. When the rotating member 4 rotates around the bearing portion 1c, only a part on the base side of the bearing portion 1c and a portion on the lower surface side of the cylindrical rotating portion 4b are engaged to rotate. It has become.
In this manner, the tapered inclined portion 4e is formed on the inner peripheral surface of the cylindrical rotating portion 4b of the rotating member 4, and is engaged with the outer peripheral surface of the bearing portion 1c on the base side of the inclined portion 4e. As a result, it is only necessary to provide the tapered inclined portion 4e on the cylindrical rotating portion 4b of the rotating member 4, so that the torque can be reduced with a simple configuration.

  FIG. 6 shows a third embodiment of the rotating electrical component according to the present invention. The difference from the above embodiment is the bearing portion 1 c of the housing 1 and the cylindrical rotating portion 4 d of the rotating member 4. The configuration of the inclined portion of the engaging surface is partially different. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

That is, in the third embodiment, the inclined portion formed by the inclined surface provided on the engagement surface between the bearing portion 1c of the housing 1 and the cylindrical rotating portion 4d of the rotating member 4 is inclined to the outer peripheral surface of the bearing portion 1c. The inclined portion 1j is formed of a tapered slope formed on the outer peripheral surface of the bearing portion 1c, and the diameter on the tip side is larger than the diameter of the base portion of the outer peripheral surface. It is formed to become. And it is made to engage with the internal peripheral surface of the said cylindrical rotation part 4d in the front end side of this inclination part 1j.
At this time, the inner peripheral surface of the cylindrical rotating part 4d is formed to have substantially the same diameter in the vertical direction.

That is, when the rotating member 4 is engaged with the bearing portion 1c, the engaging surfaces of the bearing portion 1c and the cylindrical rotating portion 4b are opposed to each other with a predetermined angle. When the rotating member 4 rotates around the bearing portion 1c, only a part on the front end side of the bearing portion 1c and a part on the upper surface side of the cylindrical rotating portion 4b are engaged to rotate. It has become.
In this way, the inclined portion 1j that is tapered is formed on the outer peripheral surface of the bearing portion 1c, and is engaged with the inner peripheral surface of the cylindrical rotating portion 4b of the rotating member 4 on the tip side of the inclined portion 1j. Therefore, it is only necessary to provide the bearing portion 1c with the wide inclined portion 1j, so that the torque can be reduced with a simple configuration.

  FIG. 7 shows a fourth embodiment of the rotating electrical component of the present invention. The difference from the above embodiment is the bearing portion 1c of the housing 1 and the cylindrical rotating portion 4d of the rotating member 4 similarly. The configuration of the inclined portion of the engaging surface is partially different. Note that the same components as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

That is, in the fourth embodiment, the inclined portion formed by the inclined surface provided on the engagement surface between the bearing portion 1c of the housing 1 and the cylindrical rotating portion 4d of the rotating member 4 is the inner periphery of the cylindrical rotating portion 4d. The surface is formed as an inclined portion 4f, and this inclined portion 4f is formed by a tapered inclined surface formed on the inner peripheral surface of the cylindrical rotating portion 4d of the rotating member 4, and is formed with respect to the diameter of the base portion of the inner peripheral surface. Thus, the diameter on the tip side is formed to be smaller. And it is made to engage with the upper end of the outer peripheral surface of the bearing 1c on the upper surface side of the inner peripheral surface of the inclined portion 4f.
At this time, the outer peripheral surface of the bearing portion 1c is formed to have substantially the same diameter in the vertical direction.

That is, when the rotating member 4 is engaged with the bearing portion 1c, the engaging surfaces of the bearing portion 1c and the cylindrical rotating portion 4b are opposed to each other with a predetermined angle. When the rotating member 4 rotates around the bearing portion 1c, only a part on the front end side of the bearing portion 1c and a part on the upper surface side of the cylindrical rotating portion 4b are engaged to rotate. Thus, the tapered inclined portion 4f is formed on the inner peripheral surface of the cylindrical rotating portion 4b of the rotating member 4, and the outer peripheral surface of the bearing portion 1c is formed on the tip side of the inclined portion 4f. Since the engagement is made, it is only necessary to provide the tapered inclined portion 4f on the cylindrical rotating portion 4b of the rotating member 4, so that the torque can be reduced with a simple configuration.

It is a top view which shows the rotary electric component of this invention. It is a side view which shows the rotary electrical component of this invention. It is sectional drawing which shows the rotary electrical component of this invention. It is sectional drawing seen from the different direction which shows the rotary electric component of this invention. It is sectional drawing which shows the other Example of the rotary electric component of this invention. It is sectional drawing which shows the other Example of the rotary electric component of this invention. It is sectional drawing which shows the other Example of the rotary electric component of this invention. It is sectional drawing which shows the conventional rotating electrical component.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Housing 1a: Opening part 1b: Base part 1c: Bearing part 1d: Inclined part 1e: Outer peripheral wall part 1f: Storage part 1g: Engagement protrusion 1h: Locking claw part 1i: Spring accommodating part 1j: Inclined part 2: Code pattern 2a: External terminal 3: Click spring 4: Rotating member 4a: Opening part 4b: Cylindrical rotating part 4c: Gutter part 4d: Click groove part 4e: Inclined part 4f: Inclined part 5: Slider 5a: Contact part 6 : Cover member 6a: Opening 6b: Upper plate 6c: Hook

Claims (6)

  A housing having a bearing portion erected in a circular shape in the center, a rotating member having a cylindrical rotating portion that is rotatably engaged with the bearing portion, and an electric signal as the rotating member rotates. A signal detecting means for outputting, and forming an inclined portion made of an inclined surface on the engaging surface between the bearing portion and the cylindrical rotating portion, and engaging surfaces of the bearing portion and the cylindrical rotating portion with each other. When the rotating member rotates with a predetermined angle facing each other, the inclined portion slides only on a part of the engaging surfaces of the bearing portion and the cylindrical rotating portion. Rotating electrical parts characterized by that.   The taper-shaped inclined part is formed in the outer peripheral surface of the said bearing part, and it was made to engage with the internal peripheral surface of the cylindrical rotation part of the said rotation member on the base side of this inclined part. The rotating electrical component according to 1.   The tapered part is formed on the inner peripheral surface of the cylindrical rotating part of the rotating member, and the base part side of the inclined part is engaged with the outer peripheral surface of the bearing part. The rotating electrical component according to 1.   An inclined portion having a tapered shape is formed on the outer peripheral surface of the bearing portion, and the front end side of the inclined portion is engaged with the inner peripheral surface of the cylindrical rotating portion of the rotating member. Item 2. The rotating electrical component according to Item 1.   2. A tapered inclined portion is formed on the inner peripheral surface of the cylindrical rotating portion of the rotating member, and is engaged with the outer peripheral surface of the bearing portion on the tip side of the inclined portion. Rotating electrical component as described. 6. The rotating electrical component according to claim 1, wherein the inclined portion is formed by an inclined surface having an inclination angle equal to or larger than a die taper of the mold.

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