JP2007067333A - Rotating electric component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating electric component which can be miniaturized and for which costs can be lowered, with a little risk of damaging a human body by a shaft even when excessive force is applied and a knob is destroyed. <P>SOLUTION: The rotating electric component comprises a fixed member 1 having a storage 1a; a rotary member 2 disposed in the storage 1a of the fixed member 1; an operation shaft 3 whose one end side is engaged with the rotary member 2 for performing the rotating operation of the rotary member 2; a bearing member 4 which is integrally provided on the fixed member 1, and for which the other end side of the operation shaft 3 is projected to the outer side, for rotatably holding the operation shaft 3; and signal detection means 5 and 7 stored in the fixed member 1 for outputting electric signals accompanying the rotation of the rotary member 2. On the operation shaft 3, a groove 3e to be in a thin shaft shape is formed near a root projected to the outer side of the bearing member 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotary electrical component such as an encoder or a variable resistor that is used in an acoustic device or the like and is rotated by an operation knob to adjust a volume or the like.

  As a structure of a conventional rotary electric component, the operating body is composed of a receiving member, a knob portion, and an elastic member disposed between the two, and an excessive force is applied to the knob portion. A structure is known in which the elastic member is compressed and the knob portion enters the receiving member, thereby reducing the amount of protrusion of the knob portion from the housing (see, for example, Patent Document 1).

  The structure of this conventional rotating electrical component is shown in FIGS. FIG. 7 is an explanatory view showing a usage state of a conventional rotating electrical component, and FIG. 8 is an explanatory view showing an operating state of the conventional rotating electrical component.

  In the figure, the main body 51 includes a substantially box-shaped housing 51a and a plurality of projecting outwards from the housing 51a, a substantially cylindrical bearing 51b, and a plurality of outward projecting from the housing 51a. Terminal 51c. In addition, a rotary variable resistor 51d made of a resistor, a common electrode, a substrate, or the like (not shown) is disposed in one end side of the casing 51a, and a fixed contact (not shown) is provided in the other end. And a push switch 51e composed of a movable contact or the like.

  The operation shaft 52 is inserted into the bearing portion 51b, and the substantially cylindrical shaft portion 53 that protrudes outward from the bearing portion 51b coaxially with the bearing portion 51b, and one end of the shaft portion 53 are inserted. A receiving member 54 integrated with the shaft portion 53 is provided. The other end portion of the shaft portion 53 of the operation shaft 52 is inserted into the bearing portion 51b so that the variable resistor 51d and the push switch 51e can be operated in the housing portion 51a. Has been placed.

The shaft portion 53 is formed on a substantially cylindrical thin diameter portion 53a, a large diameter portion 53b having a diameter larger than that of the small diameter portion 53a, and a distal end side of the large diameter portion 53b, and has a semicircular cross section. The narrow-diameter portion 53a is inserted into the bearing portion 51b, and the tip end portion of the small-diameter portion 53a is disposed in the housing portion 51a.
The receiving member 54 includes a substantially prismatic base 54a, a hole 54b provided in an axial direction of the shaft 53 from one end of the base 54a, and one end of the base 54a. A substantially disc-shaped holding portion 54c having a plane perpendicular to the axis of the shaft portion 53, and a plurality of rectangular holes 54d are provided in the holding portion 54c.

  The knob portion 55 has a substantially annular shape provided at a position facing the side wall 55d and the surface wall 55c extending substantially orthogonally to the surface wall 55c from the periphery of the arc-shaped surface wall 55c and the surface wall 55c. A rear wall 55e, and a central portion of the rear wall 55e formed with a substantially rectangular recess 55f, and a pair of projections projecting outward from the rear wall 55e of the operation section 55a. And a locking portion 55b. The pair of locking portions 55b protrude outward from the back wall 55e, and a protruding portion 55g for locking by snap-in is formed at the free ends of the pair of locking portions 55b. ing.

The elastic member 56 is composed of a metal coil spring.
The knob portion 55, the elastic member 56, and the receiving member 54 are first inserted into the base portion 54 a of the receiving member 54, and the base portion 54 a is accommodated in the recess 55 f of the knob portion 55. At this time, the convex portions 55g of the pair of locking portions 55b are snap-in coupled to the holes 54d of the holding portion 54c. The elastic member 56 urges the knob portion 55 with a predetermined urging force so as to push the knob portion 55 forward (in the direction of arrow C). And this predetermined urging | biasing force is comprised so that it may be a strong force compared with the predetermined | prescribed pressing force for pushing operation of the above-mentioned push switch 51e. Therefore, the knob portion 55 is configured to be movable in the axial direction (arrow B and C directions) of the receiving member 54 while resisting the elasticity of the elastic member 56.

As shown in the figure, the electrical component 60 is arranged in a state of being electrically connected to a printed wiring board 66 in a housing 65 of an audio device such as a car stereo device. In this state, only the knob portion 55 protrudes outward from the panel 65a of the housing 65.
The normal operation of the electrical component 60 in this state is performed by moving the knob portion 55 against the automatic return force of the push switch 51e by pressing the knob portion 55 protruding from the panel 65a. At this time, the knob portion 55 is always arranged in a state of protruding outward from the panel 65a.

  Next, as shown in FIG. 8, in the acoustic device having this configuration, when something hits the panel 65a surface side of the housing 65 of the acoustic device, an excessive pressing force is applied to the knob portion 55. Then, the knob portion 55 is further pressed in the axial direction against the receiving member 54 by an excessive pressing force, and is accommodated (retracted) in the panel 65 a of the housing 65. In this state, no pressing force is applied to the knob portion 55, and a part of the excessive pressing force is surely received by the panel 65a, so that it is possible to more reliably prevent damage to the electrical components. become.

Japanese Patent Laid-Open No. 2001-35299

  However, the structure of the conventional rotary electric component has a problem that the structure of the operation body is complicated and a space for the receiving member to enter the knob portion is required, resulting in an increase in size and cost. In addition, there is a problem that it cannot cope with an impact load from an oblique direction.

  Therefore, the present invention solves the above-mentioned problems, can be reduced in size, can be reduced in cost, and can rotate with less risk of damage to the human body due to the shaft even when excessive force is applied to destroy the knob. An object is to provide a shaped electrical component.

In order to solve the above-mentioned problem, in the present invention, as a first solution, a fixing member having a storage portion, a rotating member disposed in the storage portion of the fixing member, and one end side of the rotating member are engaged. An operating shaft that performs a rotating operation of the rotating member; a bearing member that is provided integrally with the fixed member, the other end of the operating shaft protrudes outward, and rotatably holds the operating shaft; And a signal detecting means that is housed in the fixing member and outputs an electrical signal in accordance with the rotation of the rotating member, and the operation shaft has a thin shaft shape in the vicinity of the root portion protruding outward of the bearing member. It was set as the structure which formed the groove part which becomes.
As a second solving means, the groove portion is provided in an annular shape continuously in the circumferential direction of the operation shaft.

Further, as a third solving means, the operation shaft is made of a metal material, and a restriction member that restricts the operation shaft from entering the inside of the bearing member between the tip of the bearing member and the groove portion. It was set as the structure which attached.
Further, as a fourth solving means, the operation shaft is engaged with a first shaft body provided on one end side engaged with the rotating member, and the first shaft body and the engaging means, A second shaft body provided on the other end side projecting outward of the bearing member, wherein the second shaft body is formed of a softer material than the first shaft body, and the second shaft body The groove was formed in the shaft body.
Further, as a fifth solving means, the first shaft body is constituted by zinc die casting, a flange having a click uneven portion is provided on the first shaft body, and the second shaft body is made of aluminum. Consists of.

Further, as a sixth solution, the groove portion of the second shaft body is provided with a restriction member that restricts the operation shaft from entering the inside of the bearing member.
Further, as a seventh solving means, the engaging means includes a snap leg provided on the second shaft body, and an attachment portion provided on the first shaft body to which the snap leg is snapped. Consists of.
Further, as an eighth solving means, the bearing member is provided with a cylindrical portion, and a part of each of the first shaft body and the second shaft body engaged by the engaging means. Is configured to be integrally inserted through the tubular portion.
Further, as a ninth solving means, the operation shaft is constituted by a through shaft having a through hole in a central portion.

As described above, the rotating electrical component of the present invention includes a fixing member having a storage portion, a rotating member disposed in the storing portion of the fixing member, and one end side engaged with the rotating member, and the rotating operation of the rotating member. And the other end of the operating shaft projecting outward, a bearing member holding the operating shaft rotatably, and being housed in the fixed member. And a signal detecting means for outputting an electrical signal along with the rotation, and the operating shaft is formed with a thin shaft-shaped groove in the vicinity of the base portion protruding outward of the bearing member. Even if excessive force is applied to the operation knob attached to the control knob and the operation knob is destroyed, the operation shaft also breaks or bends due to the groove, making the operation shaft protruding from the panel less likely to damage the human body. be able to.
Further, since the groove portion is provided annularly continuously in the circumferential direction of the operation shaft, the operation shaft can be more reliably bent.

In addition, the operating shaft is made of a metal material, and a restricting member that restricts the operating shaft from entering the inside of the bearing member is attached between the tip of the bearing member and the groove portion. Is added, the operation shaft can be easily broken from the groove with the mounting position of the operation shaft and the regulating member as a fulcrum.
Further, the operating shaft is engaged with the first shaft body provided on one end side that is engaged with the rotating member, the first shaft body is engaged with the engaging means, and the operation shaft protrudes outward from the bearing member. Since the second shaft body is made of a softer material than the first shaft body and the groove portion is formed on the second shaft body, the second control body is provided on the end side. Even if an excessive force is applied and the operation knob is broken, the second shaft body made of a soft material can be easily bent.
In addition, since the first shaft body is made of zinc die cast, the first shaft body is provided with a collar portion having a click uneven portion, and the second shaft body is made of aluminum, the second shaft Since the body is made of soft aluminum, the second shaft body can be reliably bent with an excessive load, and the first shaft body is made of a relatively hard zinc die cast, so that the complicated The click uneven portion can be easily formed, and a good click feeling can be obtained when the operation shaft is rotated.

In addition, since a restriction member for restricting the operation shaft from entering the bearing member is attached to the groove portion of the second shaft body, a groove portion provided to make the second shaft body easy to bend is provided. Utilizing this, the regulating member can be attached and it is not necessary to provide a separate groove, so that the length of the operating shaft can be shortened.
Further, since the engaging means is composed of a snap leg provided on the second shaft body and an attachment portion provided on the first shaft body to which the snap leg is snapped, the first shaft body is provided. And the second shaft body can be easily integrated by snapping, so that the assembly workability can be improved and the snap legs are provided on the second shaft body side made of a soft material. It is possible to make the snap-fastening more reliable.
Further, the bearing member is provided with a cylindrical portion, and a part of each of the first shaft body and the second shaft body engaged by the engaging means is integrally inserted into the cylindrical portion. Therefore, the tubular portion can ensure the engagement between the first and second shaft bodies, and the second shaft body is inserted through the tubular portion, so that an excessive load is applied. When added, the second shaft can be more easily bent.
In addition, since the operation shaft is formed of a through shaft having a through hole in the central portion, the operation shaft can be easily folded because the operation shaft is hollow. Further, since the light can be guided to the operation knob through the hollow portion of the through shaft, the illumination type can be supported.

  Hereinafter, embodiments of the present invention are shown in FIGS. FIG. 1 is a cross-sectional view showing a rotary electric component of the present invention, FIG. 2 is a cross-sectional view showing an operation shaft of the rotary electric component of the present invention, and FIG. 3 is a panel in which an operation knob is mounted on the rotary electric component of the present invention. FIG. 4 is a cross-sectional view showing another embodiment of the rotary electric component of the present invention, and FIG. 5 shows an operation shaft according to another embodiment of the rotary electric component of the present invention. FIG. 6 is a cross-sectional view showing a second shaft body constituting an operating shaft which is another embodiment of the rotary electric component of the present invention.

  1 and 2, the rotary electric component of the present invention includes a fixed member 1 having a storage portion 1a, a rotary member 2 disposed in the storage portion 1a of the fixed member 1, and one end side of the rotary member 2. An operating shaft 3 that engages and rotates the rotating member 2, and a bearing that is attached to the fixed member 1, projects the other end side of the operating shaft 3 outward, and holds the operating shaft 3 rotatably. It is mainly comprised from the member 4 and the signal detection means which is accommodated in the fixing member 1 and outputs an electrical signal with rotation of the rotating member 2.

  The fixing member 1 is made of an insulating material such as synthetic resin, is formed in a substantially rectangular shape, and is provided with a storage portion 1a including a circular opening on one surface side. An insulating substrate 5 made of a laminated plate of phenol resin or the like and provided with a resistance pattern or a conductive pattern (not shown) made of carbon or silver on the surface side is formed by a method such as insert molding on the inner bottom portion of the storage portion 1a. It is buried in one piece.

  Further, a connection terminal 6 made of a conductive metal plate connected to a resistance pattern or a conductive pattern and led to the outside is fixed to one end edge of the insulating substrate 5. It protrudes from the side and is bent 90 degrees along one side. In addition, in the center of the insulating substrate 5, an insertion hole 5 a through which a part of the rotating member 2 and the operation shaft 3 is inserted and held rotatably is provided.

  The storage portion 1a of the fixed member 1 is made of an insulating material such as synthetic resin, and a substantially disc-shaped rotating member 2 is disposed. The rotating member 2 includes a flat base portion 2 a and a cylindrical portion 2 b protruding from the base portion 2 a to one side, and the cylindrical portion 2 b is rotatable in the insertion hole 5 a of the insulating substrate 5. It is inserted. Further, a slider 7 made of a conductive thin metal plate is fixed to the base portion 2 a by a caulking method or the like, and the contact 7 a at the free end of the slider 7 is attached to the insulating substrate 5. It is in sliding contact with the resistance pattern or the conductive pattern.

  A through-hole fitting hole 2c is provided at the center between the base portion 2a and the cylindrical portion 2b. One end side of the operation shaft 3 is engaged with the fitting hole 2c, and the rotating member 2 is rotated. Has become. In accordance with the rotation operation, the contact 7a of the slider 7 is in sliding contact with the resistance pattern or the conductive pattern, so that a desired electric signal is output. The insulating substrate 5 on which the resistance pattern or the conductive pattern is formed and the slider 7 that moves relatively on the resistance pattern or the conductive pattern constitute a signal detection means.

  The operation shaft 3 is formed by, for example, zinc die casting or the like, and has a flat plate-like flange portion 3a, a shaft portion 3b that is rotatably supported by the bearing member 4, and extends to the tip side of the shaft portion 3b. And a fitting projection 3d provided so as to project from one end side (lower surface side) of the flange 3a. The fitting protrusion 3d is engaged with the fitting hole 2c of the rotating member 2, and the rotating member 2 is rotated as the operating shaft 3 is rotated.

  Further, on the other end side (upper surface side) of the flange portion 3a, a plurality of annular and uneven cam peaks (not shown) are provided, and an elastic metal plate fixed to the bearing member 4 on the cam peaks is provided. When the click spring 8 is slid, a click feeling when the operation shaft 3 is rotated is obtained.

  Further, a groove portion 3 e is formed in the shaft portion 3 b of the operation shaft 3 in the vicinity of the root portion protruding outward of the bearing member 4. The groove 3e is provided in an annular shape continuously in the circumferential direction of the shaft portion 3b. By providing the groove 3e in an annular shape, the remaining portion is formed in a thin shaft shape having a small diameter. A regulating member 9 such as an E-ring that regulates the operation shaft 3 from entering the inside of the bearing member 4 is attached between the groove 3e and the tip of the bearing member 4. Further, in the center of the operation shaft 3, a long through hole 3 f that penetrates from the knob mounting portion 3 c to the fitting protrusion 3 d is provided along the axial direction.

  The bearing member 4 is formed of an insulating material such as a synthetic resin or a metal die-cast, and has a rectangular base portion 4a and a projecting portion from the base portion 4a, and has a slightly longer cylindrical portion 4b. ing. The base 4a is provided with a substantially circular housing recess 4c, and a click spring 8 is fixed to the bottom of the housing recess 4c. The housing recess 4c accommodates the flange 3a of the operating shaft 3, and a plurality of concave and convex cam peaks (not shown) provided on the upper surface side of the flange 3a are disposed to face the click spring 8. Yes.

  Further, the cylindrical portion 4 b is inserted with the shaft portion 3 b of the operation shaft 3, and the operation shaft 3 is rotatably supported by the bearing member 4. At this time, a regulating member 9 such as an E-ring is attached between the shaft portion 3 b and the tip of the bearing member 4 to prevent the operation shaft 3 from entering the bearing member 4. This bearing member 4 is laminated integrally with the fixing member 1 with the receiving recess 4c facing the receiving portion 1a of the fixing member 1, and is clicked into the space formed by the receiving portion 1a and the receiving recess 4c. A flange portion 3a of the operating shaft 3 having a cam crest that slides with the spring 8 and a base portion 2a of the rotating member 2 to which the slider 7 that slides on the insulating substrate 5 is fixed are accommodated rotatably. ing.

In addition, a guide member 10 having a space for accommodating the light emitting element 11 is provided behind the fixing member 1. The guide member 10 is made of an insulating material such as a synthetic resin, is formed in a rectangular shape, and a slightly larger round hole 10a is formed in the center thereof.
The bearing member 4, the fixing member 1, and the guide member 10 are integrally engaged in a state where they are stacked by an attachment member 12 formed by punching and bending a metal plate.

  In this case, the guide member 10 integrally engaged behind the fixing member 1 is provided with a round hole 10 a at a position corresponding to the insertion hole 5 a of the insulating substrate 5 embedded in the fixing member 1. . The light emitting element 11 is disposed in the round hole 10a corresponding to the through hole 3f of the fitting protrusion 3d of the operation shaft 3 inserted into the insertion hole 5a together with the cylindrical portion 2b of the rotating body 2. .

In this case, the light emitting element 11 is separately attached on a wiring board 13 such as an electric device on which the rotating electrical component is mounted, and light emitted from the light emitting element 11 is guided by the guide member 10. Thus, the light is efficiently guided to the tip of the knob mounting portion 3c through the through hole 3f provided in the center of the operation shaft 3 without leaking to the outside.
As described above, since light can be guided to the operation knob 14 through the through hole 3f of the operation shaft 3, it is possible to cope with an illumination type.

FIG. 3 is an explanatory diagram showing a use state in which the operation knob 14 is attached to the rotary electric component and attached to the panel 15 of an electric device or the like.
In this case, although not shown, the rotary electric component is mounted on a wiring board of an electric device or the like, and protrudes from the connection terminal 6 protruding from one side surface of the fixing member 1 and the bottom surface side of the guide member 10. The plurality of bosses 10b provided and a pair of leg portions 12a provided on the attachment member 12 are positioned and soldered to be fixedly attached. The operation knob 14 attached to the knob attachment portion 3c of the operation shaft 3 is attached to a position above the narrow shaft-shaped groove portion 3e provided on the shaft portion 3b of the operation shaft 3.

  As described above, in the above-described embodiment, the shaft portion 3b of the operation shaft 3 is formed with the annular groove portion 3e continuous in the circumferential direction in the vicinity of the base portion protruding outward of the bearing member 4, and the remaining portion. Is formed in a thin shaft shape having a small diameter, even if an excessive force is applied to the operation knob 14 attached to the tip of the operation shaft 3 and the operation knob 14 is broken, the operation is performed by the groove 3e. Since the shaft 3 can be bent more reliably, the operation shaft 3 is also bent or bent by the groove 3e, so that the human body can be made less likely to be damaged by the operation shaft 3 protruding from the panel 15. It has become a thing.

Further, a regulating member 9 made of an E-ring or the like for regulating the operation shaft 3 from entering the inside of the bearing member 4 is attached between the tip of the bearing member 4 and the groove portion 3b of the operation shaft 3. Therefore, when an excessive force is applied to the operation knob 14, the operation shaft 3 can be easily broken from the groove 3e with the mounting position of the operation shaft 3 and the regulating member 9 as a fulcrum. .
Further, since the operation shaft 3 is formed of a through shaft having a through hole 3f at the center, the operation shaft 3 can be easily folded because the operation shaft 3 is hollow.

  In this way, the breakable groove 3e is formed in the operation shaft 3, and when an excessive load is applied to the operation knob 14, the operation shaft 3 is broken from the groove 3e, and the operation shaft 3 is rotated. By being configured so that it cannot be performed (product destruction state), it is possible to comply with the internal collision regulation that is a safety standard for in-vehicle electrical equipment in Europe and the like.

  When an excessive pressing force is applied to the operation shaft 3, the operation shaft 3 breaks from the groove 3e and prevents the operation shaft 3 from rotating. Therefore, an operation body such as the operation knob 14 attached to the operation shaft 3 is removed. There is no need for a complicated structure, and it is possible to provide a rotating electrical component that can be reduced in size and reduced in cost, and that is compatible with the internal collision regulation, which is a safety standard for in-vehicle electrical equipment. .

  4 to 6 show another embodiment of the rotating electrical component of the present invention. In this case, the difference from the configuration of the embodiment described with reference to FIGS. 1 to 3 is that the configuration of the operation shaft is partially different. The same parts as those in the above-described embodiment described with reference to FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof is omitted.

  In the drawing, the operation shaft 18 is engaged with a first shaft body 16 provided on one end side engaged with the rotating member 2, and the first shaft body 16 is engaged with the engagement means, whereby the bearing member 4. The second shaft body 17 is provided on the other end side projecting outward.

  The first shaft body 16 is formed of a relatively hard metal material such as zinc die cast, and has a flat plate-like flange portion 16 a and a projecting attachment portion 16 c that engages with the second shaft body 17. The first shaft portion 16b is rotatably supported by the bearing member 4, and the fitting protrusion 16d is provided so as to protrude from one end side (lower surface side) of the flange portion 16a. The fitting protrusion 16d is engaged with the fitting hole 2c of the rotating member 2, and the rotating member 2 is rotated as the operating shaft 18 is rotated.

In addition, a plurality of annular and uneven cam peaks (not shown) are provided on the other end side (upper surface side) of the flange portion 16a. From the elastic metal plate fixed to the bearing member 4 on the cam peaks. When the click spring 8 is slid, the click feeling when the operation shaft 18 is rotated is obtained.
In addition, a through-hole 16 e that penetrates along the axial direction is provided in the center of the first shaft body 16.

  The second shaft body 17 is formed of aluminum or the like made of a softer material than the first shaft body, and has a pair of snap legs 17b that are engaged with the mounting portion 16c of the first shaft body 16. The second shaft portion 17a is rotatably supported by the bearing member 4 and a knob mounting portion 17c extending to the tip end side of the second shaft portion 17a. The engaging means is constituted by the snap leg 17b of the second shaft body 17 and the mounting portion 16c provided on the first shaft body 16 to which the snap leg 17b is snapped.

  As described above, the engaging means includes a pair of snap legs 17b provided on the second shaft body 17 and an attachment portion 16c provided on the first shaft body 16 to which the snap legs 17b are snapped. Since it comprised, the 1st shaft body 16 and the 2nd shaft body 17 can be integrated easily by snapping, Therefore The workability | operativity of an assembly can be made favorable. Further, since the snap legs 17b are provided on the second shaft body 17 side made of a soft material such as aluminum, it is possible to make the both shaft bodies snap more securely.

  Further, a groove portion 17 d is formed in the second shaft portion 17 a of the second shaft body 17 in the vicinity of the root portion protruding outward of the bearing member 4. The groove portion 17d is provided in an annular shape continuously in the circumferential direction of the second shaft portion 17a. By providing the groove portion 17d in an annular shape, the remaining portion is formed in a thin shaft shape having a small diameter. Further, a regulating member 9 such as an E-ring for regulating the second shaft body 17 from entering the inside of the bearing member 4 is attached to the groove portion 17d. Thus, by attaching the restricting member 9 using the groove portion 17d provided to make the second shaft body 17 easy to bend, it is not necessary to provide a separate groove portion, and the length dimension of the operation shaft 18 is shortened. can do.

  Further, in the center of the second shaft body 17, a long through hole 17 e penetrating from the knob mounting portion 17 c to the snap leg 17 b is provided along the axial direction. When the first shaft body 16 and the second shaft body 17 are integrally engaged by the engaging means, the first shaft body 16 is projected from the tip of the knob mounting portion 17c of the second shaft body 17. Through holes 17e and 16e are connected over the end of the fitting projection 16d, and a through hole 18e continuous with the operation shaft 18 is formed.

  Further, the operating shaft 18 is integrally engaged by the engaging means, and the first shaft portion 16b of the first shaft body 16 and the second shaft portion 17a of the second shaft body 17 are respectively engaged. A part of the bearing member 4 is integrally inserted into the cylindrical portion 4b, and the operation shaft 18 (the knob mounting portion 17c of the second shaft body 17) is rotated, whereby the bearing member 4 is rotated. It is attached so that it can rotate integrally.

  As described above, a part of each of the first shaft body 16 and the second shaft body 17 engaged by the engaging means is integrally inserted into the cylindrical portion 4 b of the bearing member 4. The tubular portion 4b can make the engagement between the first and second shaft bodies 16 and 17 more reliable, and the second shaft body 17 is inserted through the tubular portion 4b. When a heavy load is applied, the second shaft body can be more easily bent.

  According to the configuration of the present embodiment described above, the operation shaft 18 is engaged by the first shaft body 16 provided on one end side engaged with the rotating member 2, the first shaft body 16 and the engaging means. And a second shaft body 17 provided on the other end side projecting outward of the bearing member 4, and the second shaft body 17 is made from the first shaft body 16 made of zinc die casting. Since the second shaft body 17 is formed with the groove portion 17d, even if an excessive force is applied to the operation knob 14 and the operation knob 14 is destroyed, the second shaft body 17 is made of a soft material. The second shaft body 17 can be easily bent.

  In addition, since the first shaft body 16 is made of zinc die cast, the first shaft body 16 is provided with a flange portion 16a having a click uneven portion, and the second shaft body 17 is made of aluminum. Since the second shaft body 17 is made of soft aluminum, the second shaft body 17 can be reliably bent with an excessive load, and the first shaft body 16 is made of a relatively hard zinc die cast. Therefore, a complicated click uneven part can be easily formed, and a good click feeling can be obtained when the operation shaft 18 is rotated.

It is sectional drawing which shows the rotary electric component of this invention. It is sectional drawing which shows the operating shaft of the rotary electric component of this invention. It is explanatory drawing which shows the use condition which attached the operation knob to the rotary electric component of this invention, and was attached to the panel. It is sectional drawing which shows the other Example of the rotary electric component of this invention. It is sectional drawing which shows the 1st shaft body which comprises the operating shaft which is the other Example of the rotary electric component of this invention. It is sectional drawing which shows the 2nd shaft body which comprises the operating shaft which is the other Example of the rotary electric component of this invention. It is explanatory drawing which shows the use condition of the conventional rotary electrical component. It is explanatory drawing which shows the operation state of the conventional rotary electrical component.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Fixing member 1a: Storage part 2: Rotating member 2a: Base part 2b: Cylindrical part 2c: Fitting hole 3: Operation shaft 3a: Gutter part 3b: Shaft part 3c: Knob attachment part 3d: Fitting protrusion 3e : Groove portion 3f: through hole 4: bearing member 4a: base portion 4b: cylindrical portion 4c: accommodating recess 5: insulating substrate (signal detection means)
5a: Insertion hole 6: Connection terminal 7: Slider (signal detection means)
7a: Contact 8: Click spring 9: Restricting member (E-ring)
DESCRIPTION OF SYMBOLS 10: Guide member 10a: Round hole 10b: Boss 11: Light emitting element 12: Mounting member 12a: Leg part 13: Wiring board 14: Operation knob 15: Panel 16: 1st shaft body 16a: Eave part 16b: 1st axis Part 16c: Mounting part (engagement means)
16d: fitting protrusion 16e: through hole 17: second shaft body 17a: second shaft portion 17b: snap leg (engaging means)
17c: Knob mounting portion 17d: Groove portion 17e: Through hole 18: Operating shaft 18e: Through hole

Claims (9)

  A fixing member having a storage portion, a rotating member disposed in the storage portion of the fixing member, an operation shaft that is engaged with the rotating member at one end side and that rotates the rotating member, and the fixing member The other end side of the operating shaft protrudes outward, and the bearing member that rotatably holds the operating shaft is housed in the fixed member, and an electrical signal is generated along with the rotation of the rotating member. The rotary electric component is characterized in that a thin shaft-shaped groove portion is formed in the vicinity of the base portion protruding outward of the bearing member.   The rotary electrical component according to claim 1, wherein the groove is annularly provided continuously in a circumferential direction of the operation shaft.   The operation shaft is made of a metal material, and a restricting member for restricting the operation shaft from entering the inside of the bearing member is attached between a tip of the bearing member and the groove portion. Item 3. The rotating electrical component according to Item 1 or 2.   The operation shaft is engaged with a first shaft body provided on one end side engaged with the rotating member, and the first shaft body by an engaging means, and protrudes outward of the bearing member. The second shaft body is formed of a material softer than the first shaft body, and the groove portion is formed in the second shaft body. 3. The rotary electrical component according to claim 1, wherein the rotary electrical component is a rotary electrical component.   The first shaft body is formed by zinc die casting, a flange having a click uneven portion is provided on the first shaft body, and the second shaft body is formed by aluminum. Item 5. The rotating electrical component according to Item 4.   6. The rotary electric device according to claim 4, wherein a restriction member for restricting the operation shaft from entering the inside of the bearing member is attached to the groove portion of the second shaft body. parts.   The engaging means includes a snap leg provided on the second shaft body and an attachment portion provided on the first shaft body to which the snap leg is snapped. Item 7. The rotating electrical component according to any one of Items 4 to 6.   The bearing member is provided with a cylindrical portion, and a part of each of the first shaft body and the second shaft body engaged by the engaging means is integrally formed with the cylindrical portion. The rotating electrical component according to claim 7, wherein the rotating electrical component is inserted.   The rotary electric component according to claim 1, wherein the operation shaft includes a through shaft having a through hole in a central portion.

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