JPH10172813A - Electric component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a long-life and stable click feeling and rotary torque by forming a rough surface having mutually engaging irregularities on a holder and bottom plate. SOLUTION: A recesses 8c has an identical rough surface 8d having radial irregularities extending from the center to outwards at the bottom, with a rough surface 5d of a holder 5. The protrusions and recesses of the rough surface 5 of the holder 5 are mutually contacted and elastically engaged by the action of a coil spring 7 with the recesses and protrusions of the rough surface 8c of a bottom plate 8. To a slip part 2c and top end 2d of an operating shaft 2, a driver 4 is pressure-fitted into a unified body with the shaft 2. The holder 5 is engaged in the engagement cruciformed part of driver 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a click device for an electric component such as a variable resistor or a switch, and more particularly to a click mechanism.

[0002]

2. Description of the Related Art As a conventional electric component, for example, a magnetic angle detecting device will be described as an example. Japanese Patent Application No. 8-73288 proposed by the applicant is available. This conventional magnetic angle detection device will be described with reference to FIG. 8. A cover plate 16a is attached to the front of a housing 16 made of synthetic resin or the like, and a bearing 16b is formed at the center of the outside of the cover 16a. Being
The inside of the lid plate 16a has an uneven surface 16c and a flat surface 16d.
Are formed. Further, a cylindrical side plate 16e is formed on the outer peripheral side of the lid plate 16a, and the inside is hollow.
A wedge-shaped hole IC fitting groove 16f is provided at a predetermined position inside the side plate 16e. Housing 1
At the rear of 6, a bottom plate 16g is mounted, and a hollow portion 16h and a switch mounting portion 16j are formed inside.

The magnetic body 17 has a disk-like outer shape, and a magnetic code is alternately magnetized around an outer peripheral portion 17a of a plurality of N-poles and S-poles. A cylindrical projection 17b is formed on the upper surface of the central portion for restricting the horizontal movement of the magnetic body 17 itself.
b is rotatably supported inside the bearing 16b of the housing 16 without play. An oval shaft hole 17c is formed in the center of the protrusion 17b of the magnetic body 17. The bearing 16b of the housing 16 and the magnetic body 17
The operation shaft 18 is inserted into the shaft hole 17c of the operation shaft 1c.
Reference numeral 8 denotes a knob 18a that is exposed to the front outside of the housing 16, and a round shaft 18b is formed continuously with the knob 18a, and the round shaft 18b is supported by the bearing 16b of the housing 16,
It is free to rotate and move in the axial direction. Further, a slip-off portion 18c is formed so as to be continuous with the round shaft portion 18b, and the both surfaces of which are slipped. The slip-off portion 18c is axially supported by the shaft hole 17c of the magnetic body 17, and the shaft hole 17c The operation shaft 18 is freely movable in the axial direction, and when the operation shaft 18 is rotated, the magnetic body 17 also follows. A bar-shaped tip 18d thinner than the slot dropping portion 18c is formed in a continuous manner with the slot dropping portion 18c, and the tip 18d is formed in the hollow portion 1 of the bottom plate 16g.
6h.

The operating shaft 18 is provided in the hollow portion 1 of the housing 16.
It is always repelled forward through a metal washer 20 by a frustum-shaped coil spring 19 located at 6h. Also, a groove is formed on one side of the round shaft portion 18a of the operation shaft 18 so that the operation shaft 18 does not come out of the inside of the housing 16 due to the elastic force of the coil spring 19, and a shaft stopper ring 21 is formed in the groove. When the bearing ring 21 is engaged, the bearing 1
6b, which comes into contact with the inside of the housing 16 and is prevented from falling out.
An operation shaft 18 is supported. Further, the tip 18d of the operating shaft 18 is located in the hollow portion 16h of the bottom plate 16g.
A switch unit 22 having a dome-shaped movable contact 22a is inserted and attached to the switch attachment portion 16j on the side facing the. A plate-like spring member 23 made of a phosphor bronze plate or the like is attached to the upper surface of the magnetic body 17, and arms 23a and 23b are formed on the spring member 23 so as to extend diagonally right and left upward. The arm 23a
Projections 23c and 23d are formed at the tip of 23b. The projecting portion 23c resiliently contacts the uneven surface 16c and gives a click feeling by the rotation of the operation shaft 18, so that the projecting portion 2c is formed.
Reference numeral 3d elastically contacts the flat surface 16d of the housing 16 so that the rotational torque of the operation shaft 18 becomes a predetermined value. A predetermined gap is formed on the outer peripheral portion 17a of the magnetic body 17, and a Hall IC 9 formed of a magnetic detection device is mounted in the Hall IC fitting groove 16f of the housing 16 by press-fitting or the like. Then, a flat stopper plate 24 made of an iron plate or the like locks the bottom plate 16g and the switch unit 22 from the cover plate 16a of the housing 16 with the mounting legs 24a having both ends bent in a U-shape and extending forward. A magnetic angle detection device, which is a conventional electric component, is configured.

Further, in the conventional assembly of the electric parts, a bottom plate 16g with a switch unit 22 mounted thereon is laminated on the stop plate 24, and a coil spring 19 with a washer 20 mounted on a hollow portion 16h of the bottom plate 16g is mounted. I do. Then, the magnetic body 17 to which the spring member 23 is attached is laminated on the bottom plate 16g, and the operation shaft 18 is placed on the magnetic body 17 from above.
Plate 16 in which the hole IC 9 is attached to the hole IC fitting groove 16f.
a is laminated. Then, a stopper plate 2 is provided by a jig (not shown).
4 and from the front of the lid plate 16a, against the resilience of the coil spring 19 and the spring member 23, until the lid 16a and the bottom plate 16g come into close contact with each other, and then the lid plate 16a
The mounting leg 24a of the stopper plate 24 is bent inward so as to hold the assembly, and the assembly is completed.

The operation of the conventional electric component as described above is as follows.
The knob 18 of the operation shaft 18 exposed outside the housing 16
a, the magnetic body 1 follows the rotation of the operation shaft 18.
7 rotates, and the protrusion 23 c of the spring member 23 attached to the magnetic body 17 is moved to the uneven surface 16 inside the housing 16.
By pressing and sliding c, a predetermined click feeling can be obtained. Then, the Hall IC 9 detects the rotation of the magnetic body 17, and a pulse signal corresponding to the rotation angle of the operation shaft 18 is output. Based on the pulse signal, for example, the volume of an audio device or the like can be adjusted. it can. When the knob 18a is pushed in the axial direction, the operation shaft 18 slides in the direction toward the inside of the housing 16, and the tip 18d of the operation shaft 18 presses the top of the dome-shaped movable contact 22a of the switch unit 22. When the switch unit 22 is turned ON and the operation shaft 18 is rotated in this state, for example, the balance of an audio device or the like can be adjusted.

[0007]

In such a conventional electric component, the projecting portion 23c of the spring member 23 presses and slides on the uneven surface 16c of the housing 16 to give a click feeling of the operation shaft 18. The projecting portion 23c of the spring member 23 is
Point contact with the uneven surface 16c, the frictional resistance due to the elastic force of the spring member 23 is concentrated on the protruding portion 23c. For this reason, when the operation shaft 18 is repeatedly rotated for a long period of use, the protrusions 23 c
There is a problem that the operation shaft 18 cannot be properly clicked by the friction caused by the friction. Further, the arm 23a of the spring member 23 also has a problem that the root portion of the arm 23a is broken due to fatigue when the operation shaft 18 is repeatedly rotated during long-term use. Further, the slot 18c of the operation shaft 18 and the shaft hole 17c of the magnetic body 17 are formed in an oval shape so as to be movable in the axial direction. A slight clearance is provided between the hole 17c and the slot dropping portion 18c. Therefore, there is a play in the rotation direction of the operation shaft 18 when the operation shaft 18 is rotated, and there is a problem that the feeling is bad because the operator feels rattling when the operation shaft 18 is operated. In addition, the magnetic material 17 resiliently resilient by the spring member 23 is used.
Torque is concentrated on the abrasion portion 18c having a small contact area of the operation shaft 18, so that when the operation shaft 18 is repeatedly rotated for a long period of use, the oval-shaped slipper is removed. The portion 18c and the shaft hole 17c with which the slot dropping portion 18c is engaged wear,
The play in the rotation direction of the operation shaft 18 increases, and the operation shaft 18
However, there is a problem that the magnetic body 17 cannot follow and rotate properly even if the rotation is performed.

[0008]

As a first means for solving the above problems, a housing, a bottom plate attached to the housing, and a shaft supported by the housing so as to be movable and rotated in the axial direction. And a holder that rotates following the rotation of the operation shaft, and has an uneven surface having a plurality of unevennesses that engage with each other on the holder and the bottom plate. Further, as a second means for solving the above-described problem, a driving body is attached to the operation shaft, the driving body is engaged with the holder, and the rotation of the driving body is transmitted to the holder. Further, as a third means for solving the above-mentioned problem, an engagement portion for engaging the driving body and the holder is formed by a cross-shaped projection and a cross hole, and the driving body and the holder are splined. It was configured to be engaged. Further, as a fourth means for solving the above-mentioned problem, the uneven surface of the holder and the uneven surface of the bottom plate of the housing are formed in a truncated conical bevel gear shape.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric component of the present invention will be described with reference to FIGS. 1 to 7 by taking a magnetic angle detecting device as an example. A bearing 1a is formed so as to protrude, and a circular shaft hole 1b is formed through the bearing 1a. The interior of the housing 1 is formed with a hollow cavity 1c with the rear part opened. A step portion 1d is formed on the outer periphery of the rear side of the bearing 1a, and a Hall IC fitting groove 1f is provided in the inside having a rectangular outer shape. An operation shaft 2 made of aluminum or the like is inserted into a shaft hole 1b of the bearing 1a. The operating shaft 2 is connected to a knob 2a exposed to the outside of the housing 1, a round shaft 2b rotatably and slidably fitted in a shaft hole 1b of the housing 1, and connected to the round shaft 2b. The slide-off portion 2c is formed in an oval shape, and a shaft-shaped, rod-like tip portion 2d is formed ahead of the tip. A shaft fixing ring 3 made of a piano wire or the like is engaged between the round shaft portion 2b of the operation shaft 2 located inside the housing 1 and the slotted portion 2c, so that the operation shaft 2 can be moved from inside the housing 1. It is supported and is supported. For this purpose, the operation shaft 2 is rotatably supported inside the housing 1 and is movably supported in the axial direction.

A driving body 4 made of a synthetic resin or the like is press-fitted into the slot 2c and the tip 2d of the operation shaft 2 to be integrated with the operation shaft 2. As shown in FIG. 2, the driving body 4 includes a flange 4 a, a cross-shaped engaging portion 4 b on a protruding portion connected to and protruding from the flange 4 a, and a distal end surface of the engaging portion 4 b. A rod-shaped guide portion 4c is formed in the shaft.
Further, a holder 5 formed of a synthetic resin or the like is engaged with the cross-shaped engaging portion 4b of the driving body 4. As shown in FIG. 3, the holder 5 has a flange 5a on one side.
At the center of the flange 5a, a holding portion 5b is formed so as to protrude, and a cross hole 5c is formed at the center thereof. An engaging portion 4b, which is a cross-shaped protrusion of the driving body 4, is inserted into the cross hole 5c, and the driving body 4 and the holder 5 are spline-engaged. On the back surface of the flange 5a of the holder 5, as shown in FIG. 4, there is formed an uneven surface 5d in which a plurality of triangular irregularities are formed radially from the center to the outer periphery.

A ring-shaped magnetic body 6 made of a plastic magnet is provided around the outer periphery of the holding portion 5b of the holder 5.
Are inserted into the groove 5e on the outer periphery of the holding portion 5b while being prevented from rotating. The magnetic body 6 has an N pole around the outer periphery 6a.
A plurality of S poles are alternately magnetized with a predetermined number of poles and with the same magnetic field strength in a range from the upper surface to the lower surface in parallel to form a magnetic code. As shown in FIG. 1, a coil spring 7 is disposed between the flange 4 a of the driving body 4 and the holding portion upper surface 5 e of the holder 5, and the operating shaft 2 is pushed up by one coil spring 7, In addition, it performs two functions of pushing the holder 5 downward.

A bottom plate 8 made of a synthetic resin or the like is attached to the rear of the housing 5 so that the holder 5 does not jump out of the housing 1 by the action of the coil spring 7. . As shown in FIG. 5, the bottom plate 8 has a projecting portion 8a formed at the center thereof, and a boss hole 8b formed through the center of the projecting portion 8a. A guide portion 4c of the driving body 4 which is press-fitted and integrated with the operation shaft 2 is inserted into the boss hole 8b so that the operation shaft 2 can be rotated and slid in a direction perpendicular to the operation shaft 2. Regulations are made to prevent rattling.
A circular concave portion 8c is formed at a predetermined depth around the boss hole 8b, and a concave and convex surface 8d having radial irregularities outward from a central portion is formed on the bottom surface of the concave portion 8c. 5 is formed in the same shape as the concave and convex surface 5d of the holder 5, the convex portion of the concave and convex surface 5d of the holder 5 is a concave portion of the concave and convex surface 8c of the bottom plate 8, and the concave portion of the concave and convex surface 5d of the holder 5 is the concave and convex surface of the bottom plate 8. The projection 8c is in surface contact with each other, and is resiliently engaged by the action of the coil spring 7. A positioning hole 8e is formed at a diagonal corner of the bottom plate 8,
The projections (not shown) of the housing 1 are fitted, and the housing 1 and the bottom plate 8 are positioned. On one side of the bottom plate 8, a Hall IC 9 having a terminal 9a is mounted at a predetermined position without play. A predetermined gap is formed between the Hall IC 9 and the outer peripheral surface 6a of the magnetic body 6.

Further, behind the bottom plate 8, the switch unit 1 positioned by a projection (not shown) and a positioning hole is provided.
0 is attached. The switch unit 10 has a dome-shaped movable contact 10b formed of a spring material such as phosphor bronze in a central concave portion of a case 10a made of a synthetic resin or the like, and a dome-shaped apex on an adhesive tape 10c.
And the adhesive tape 10c is attached to the case 10a.
The movable contact 10b is attached by being adhered to the surface. A fixed contact 10d is arranged below the movable contact 10b. A metal stopper plate 11 is disposed behind the switch unit 10, and the stopper plate 11
An unillustrated engaging portion is formed at each end of the housing 1 in a U-shape, and the engaging portion is engaged with a not-shown protruding portion on the side surface of the housing 1 to constitute an electric component of the present invention.

Next, the assembling of the click device for electric parts according to the present invention will be described. First, a stopper plate 11 is placed on a jig (not shown), and a switch unit 10 and a bottom plate 8 to which a Hall IC 9 is attached are laminated thereon. I do. When the holder 5 having the magnetic body 6 attached thereto is inserted into the concave portion 8c of the bottom plate 8, the uneven surface 5d of the holder 5 and the uneven surface 8d of the bottom plate 8 are placed facing each other. Next, the bearing 1a of the housing 1
When the stop ring 3 is inserted into the round shaft portion 2b of the operation shaft 2, the operation shaft 2 is prevented from coming off from the housing 1 and attached. Then, the driving body 4 is press-fitted into the slot 2c and the tip 2d of the operation shaft 2 located in the hollow portion 1c of the housing 1.
Then, the coil spring 7 is inserted into the engaging portion 4b of the driving body 4. Next, when the guide portion 4c of the driving body 4 in which the coil spring 7 is inserted into the engaging portion 4b is inserted into the cross hole 5c of the holder 5, the coil spring 7 is moved to the flange portion 4a of the driving body 4.
And the upper surface 5f of the holding portion of the holder 5. The flange 4a of the driver 4 and the upper surface 5 of the holder 5 of the holder 5
f against the resilience of the coil spring 7 held between
When the stepped portion 1d is pressed by a jig or the like (not shown), locking portions (not shown) at both ends of the stopper plate 11 are resiliently locked to projections (not shown) on the side surface of the housing 1 and various components are attached. The switch unit 10, the bottom plate 8, and the housing 1 are integrated. At this time, the driving body 4 and the holder 5
Is formed by an engaging portion 4b formed of a cross-shaped protrusion and a cross hole 5c, and the driving body 4 and the holder are spline-engaged. Is movable in the axial direction, and the guide portion 4c at the tip of the driving body 4 is rotatably fitted into the boss hole 8b of the bottom plate 8 to complete the assembly of the electric component of the present invention.

The operation of the electric component of the present invention having the above-described configuration will be described with reference to audio equipment and the like. When the knob 2a of the operation shaft 2 exposed to the outside of the housing 1 is rotated,
The integrated driving body 4 attached to the operation shaft 2 by press fitting or the like rotates. Then, the cross-shaped engaging portion 4b of the driving body 4
Can be spline-engaged with the cross hole 5c of the holder 5, so that the contact area between the engagement portions can be increased.
The driving body 4 and the holder 5 have a small play, and the rotation of the operation shaft 2 can be reliably transmitted to the holder 5 to which the magnetic body 6 is attached. It can follow and rotate. Further, since the coil spring 7 rotates integrally with the holder 5 and the driving body 4, only a compressive load is applied to the coil spring 7, so that the feeling of the coil spring 7 does not deteriorate due to wear or the like.

The unevenness of the uneven surface 5d of the holder 5 and the unevenness of the uneven surface 8c of the bottom plate 8 are in surface contact with each other and are resiliently contacted by the resilient force of the coil spring 7. , A predetermined rotational torque and a click feeling can be obtained. In addition, the Hall IC 9 detects the rotation of the magnetic body 6, and outputs a pulse signal corresponding to a click feeling of the operation shaft 2, and adjusts the volume of an audio device or the like based on the pulse signal. it can. When the knob 2a is pressed in the direction of the housing 1, the operating shaft 2 moves toward the inside of the housing 1, so that the tip of the guide 4c of the driving body 4 is at the top of the dome-shaped movable contact 10b of the switch unit 10. Is pressed, the switch unit 10 is turned on by the reversal operation of the movable contact 10b, and the circuit of the Hall IC 9 whose volume has been adjusted is cut off. When the operation shaft 2 is rotated with the switch unit 10 turned on, the balance of the audio equipment and the like can be adjusted.

In the embodiment of the present invention, the operating shaft 2
Although the uneven surfaces 5d and 8d giving a click feeling are formed in a flat shape, as another embodiment, as shown in FIG. 7, the uneven surface 15d of the holder 15 is formed in a truncated conical bevel gear shape. The uneven surface of the bottom plate 8 with which the uneven surface 15d engages is formed in a bevel gear shape (not shown) so as to correspond to the bevel gear-shaped uneven surface 15d, and the bevel gear-shaped uneven surfaces are formed. , The click feeling and the rotation torque similar to the click feeling of the present invention can be obtained. Further, in the embodiment of the present invention, the holder 5 and the magnetic body 6 are described as separate bodies. However, the holder 5 and the magnetic body 6 are integrated, and the magnetic body is formed with an uneven surface for obtaining a click feeling. Is also good. The switch unit 10 is connected to a dome-shaped movable contact 10b.
As described above, a tact switch structure using a rubber spring used in a keyboard device or the like may be used.
In the present embodiment, the type in which the operation shaft 2 rotates and moves up and down has been described, but the present invention is also applicable to a type in which the operation shaft 2 simply rotates.

[0018]

According to the present invention, since the holder and the bottom plate are formed with a plurality of uneven surfaces which engage with each other, a click feeling can be obtained in a state where the respective uneven surfaces are in surface contact. The elastic force of the coil spring can be distributed over the entire uneven surface. Therefore, even when used for a long time, it is possible to provide an electric component capable of obtaining stable click feeling and rotational torque with long life and little wear on the uneven surface.

Further, a driving body is attached to the operating shaft, the driving body is engaged with the holder, and the rotation of the driving body is transmitted to the holder, so that the driving body is formed larger than the outer shape of the operating shaft. it can. Therefore, the contact area of the portion where the driving body and the holder engage can be increased, so that the rotation of the driving body can be reliably transmitted to the holder.

Further, the engaging portion for engaging the driving body and the holder is formed by a cross-shaped projection and a cross hole, and the driving body and the holder are spline-engaged. The contact area where the and the holder engage can be further increased. For this reason, the driving body and the holder can be engaged without play, and the elastic contact between the holder and the uneven surface of the bottom plate is strengthened. Since the engaging portion of the control shaft does not wear out, the rotation of the operation shaft can be accurately transmitted to the holder 5 even when used for a long time, so that a long-life and high-precision electric component can be provided.

Further, when the concave and convex surface of the holder and the concave and convex surface of the bottom inside the housing are formed in a truncated conical bevel gear shape, the concave and convex surface can be formed to be inclined, and the contact area of the concave and convex surface is further increased. can do. Alternatively, when a larger contact area is not required, the contour of the uneven surface can be reduced, so that a small electric component can be provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part illustrating a structure of an electric component according to the present invention.

FIG. 2 is a perspective view in which a driving body is attached to an operation shaft of the electric component of the present invention.

FIG. 3 is a perspective view of an electric component holder according to the present invention.

FIG. 4 is a bottom view of the holder of the electric component of the present invention.

FIG. 5 is a plan view of a bottom plate of the electric component of the present invention.

FIG. 6 is an essential part cross-sectional view for explaining the state of the uneven surface of the bottom plate and the holder of the electric component of the present invention.

FIG. 7 is a perspective view of a holder according to another invention of the electric component of the invention.

FIG. 8 is a sectional view of a main part of a conventional electric component.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Operation shaft 3 Axis stop ring 4 Driver 5 Holder 5d Uneven surface 6 Magnetic body 7 Coil spring 8 Bottom plate 8d Uneven surface 9 Hall IC 10 Switch unit 11 Stop plate 16 Housing 17 Magnetic body 18 Operation shaft 19 Coil spring 20 Washer 21 Axle Stop ring 22 Switch unit 23 Spring member 24 Stop plate

Claims (4)

[Claims] 1. A housing, a bottom plate attached to the housing, an operation shaft rotatably supported by the housing so as to be able to move and rotate in an axial direction, and a holder that rotates following the rotation of the operation shaft. An electrical component, comprising: a holder and the bottom plate each having an uneven surface having a plurality of uneven portions engaged with each other. 2. The electric component according to claim 1, wherein a driving body is attached to the operation shaft, the driving body is engaged with the holder, and rotation of the driving body is transmitted to the holder. 3. An engaging portion in which the driving body and the holder engage with each other is formed by a cross-shaped projection and a cross hole, and the driving body and the holder are spline-engaged. The electric component according to claim 2, wherein 4. The electric component according to claim 1, wherein the uneven surface of the holder and the uneven surface of the bottom plate are formed in a truncated conical bevel gear shape.