JP3243682B2 - Rotary electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electronic component having an automatic return function by a spring means.

[0002]

2. Description of the Related Art Conventionally, a so-called jog shuttle for editing is attached to, for example, a video reproducing apparatus and its remote control apparatus. The jog shuttle has a center shaft and an outer shaft having the same center of rotation, and is configured by attaching different rotary electronic components to the center shaft and the outer shaft.

FIG. 9 is a schematic sectional side view showing a conventional rotary electronic component of this kind. As shown in the figure, the rotary electronic component is provided with a lower cover 80 to which a metal shaft 802 is fixed.
1, a first sliding type object 805 having a center shaft 803 is mounted thereon, a base 807 is mounted thereon, and a second sliding type object including an outer shaft 809 is further mounted thereon. 811,
The upper part is covered with an upper cover 813. A slider 817 that is in sliding contact with a sliding substrate 815 attached to the second sliding object 811 is attached to the base 807, and a sliding contact that is attached to the first sliding object 805 is attached to the base 807. A slider 818 that is in sliding contact with the substrate 819 is attached.

Reference numeral 821 shown in FIG. 1 denotes a squeezing spring, which is formed by being wound twice in a ring shape. One end 823 of the squeezing spring 821 at the end of the winding is locked by a locking projection 824 provided on the second sliding object 811, and the other end of the winding (not shown) is a base 807. At a predetermined position.

When the center shaft 803 is rotated, the slider 818 slides on the slide contact substrate 819 to obtain a desired output.
When the outer shaft 809 is rotated, the slider 817 slides on the slide contact substrate 815 to obtain another desired output.

When the outer shaft 809 is turned off after rotating the outer shaft 809 by a predetermined amount, the second sliding object 811 returns to the original neutral position by the elastic force of the pressing spring 821. .

[0007]

However, the above-mentioned conventional rotary electronic components have the following problems. Spring 821 for squeezing used as an automatic return mechanism
The space for accommodating the second sliding type object 811 must be provided in the second sliding type object 811. However, since the pressing spring 821 has a predetermined thickness, the second sliding type object 811 Must be increased, and the thickness of the rotary electronic component increases accordingly.

[0008] Since the first sliding type object 805 and the second sliding type object 811 are stacked in a multilayer shape, the thickness of the rotary electronic component also increases from this point.

The present invention has been made in view of the above points, and an object thereof is to provide a rotary electronic component having an automatic return mechanism, which has a simple structure and a reduced thickness. To provide electronic components.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a slide-type object rotatably supported on a shaft, and a base on which the slide-type object is placed. In a rotary electronic component having a structure in which a desired output is taken out by rotating a sliding type object, the rotary type component is positioned at a predetermined distance from a rotation center axis of the sliding type object and opposes the sliding type object to a base. At the position where each is provided with a hole or a groove having a substantially arc shape and a substantially same length,
Coil bars are provided in holes or grooves provided in both the sliding type object and the base.
And the coil spring is wound around its end.
At the end of the hole or groove provided in the sliding mold
Stretched so that there is no .

[0011]

When the sliding type object is in a no-load state, both ends of the compression coil spring are in elastic contact with both end surfaces of the hole of the base and the both end surfaces of the hole of the sliding type object at the same time. Stipulated. When the sliding type object is rotated, one end of the compression coil spring is pushed by one end surface of the hole of the sliding type object and moves in the rotation direction, but the other end of the compression coil spring is connected to the other end surface of the base hole. , The compression coil spring is compressed. Then, when the rotation of the sliding type object is stopped to bring the load into a no-load state, the sliding type object automatically returns to the original state by the elastic force of the compression coil spring.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing a rotary electronic component 1 according to one embodiment of the present invention. As shown in FIG. 1, the rotary electronic component 1 has a first sliding mold 40 and a second sliding mold 60 placed on a base 10 and a hole 23 formed in the base 10. The compression coil spring 80 is housed in a hole 65 provided in the second sliding die 60 and the first cover 90 is placed on the first sliding die 40 and the second sliding die 60 respectively. It is configured by covering with a second cover 100 and further fixing between the lower cover 110 disposed below the base 10 and the second cover 100. Hereinafter, each component will be described.

FIG. 2 is an enlarged perspective view showing the base 10. As shown in FIG.
It is formed by molding a synthetic resin into a substantially square shape with the slider 120 inserted therein.

The base 10 has a ring-shaped storage recess 11 for storing the second sliding object 60 and a first sliding object 4.
0 is provided with a circular storage recess 13.

A support shaft 15 is provided upright at the center of the storage recess 13, and three sliders 120 are exposed inside the storage recess 13. These three sliders 120 are bent upward.

In addition, at three places on the inner peripheral side surface of the inner wall 17 separating the storage recess 13 and the storage recess 11, the following first
A locking portion 19 provided with a claw for locking the locking projection 97 provided on the cover 90 is provided. The inner wall 1
On the upper surface of 7, four caulking projections 21 are provided.

Next, the support shaft 15 is provided in the storage recess 11.
A hole 23 is formed so as to penetrate in an arc at an angle of 150 ° with respect to the center. The storage recess 11
The five sliders 120 are exposed inside. These five sliders 120 are also bent upward.

At four corners of the base 10, through holes 29 for mounting the rotary electronic component to other members are provided, and four claw locking recesses 27 are provided on the outer side thereof. Have been.

The other ends of the eight sliders 120 are eight terminals 121 projecting from the outer wall of the base 10.

FIG. 3 is a plan view showing the eight sliders 120. FIG. As shown in the drawing, each of the sliders 120 has a terminal 121 at one end, and is arranged in a state separated by a predetermined distance. That is, in FIG. 2, the sliders 120 are shown as being in contact with each other due to difficulty in drawing, but are actually separated from each other.

FIG. 4 is an exploded perspective view of the first sliding die 40. FIG. As shown in the figure, the first sliding type object 40 has a substantially disk shape, and a sliding contact substrate 45 is provided on the lower surface of a sliding type object main body 43 having a rotating shaft (center shaft) 41 erected in the center thereof. It is configured with attached. A circular through hole 42 is provided in the rotation shaft 41.

Here, an uneven click surface 46 is formed on the upper surface of the sliding object main body 43 by providing a number of projections 47 radially about the rotation shaft 41.

The sliding contact substrate 45 is formed by providing a desired sliding contact pattern on the lower surface of the resin sheet. Instead of using the sliding contact substrate 45, a first sliding die may be formed by directly casting a punched metal plate having a sliding contact pattern shape into the lower surface of the sliding die main body 43.

FIG. 5 is an exploded perspective view of the second sliding type object 60. As shown in the figure, the second sliding-type object 60 is configured by attaching a sliding contact substrate 68 to the lower surface of a substantially disk-shaped sliding-type object main body 61.

Here, a circular hole 62 for inserting the first slide type object 40 is provided at the center of the slide type object main body 61, and a cylindrical rotary shaft is provided around the hole 62. (Outer shaft)
63 is erected. An arc-shaped through hole 65 having an angle of 150 ° is provided outside the rotary shaft 63 of the sliding-type main body 61.
A sliding contact substrate 68 is provided on a portion of the lower surface where the hole 65 is not located.
Is provided with an arc-shaped mounting concave portion 67 for mounting the mounting hole. At both ends of the hole 65, support protrusions 66 for inserting and supporting both ends of a compression coil spring 80 described below are provided. The length of the arc-shaped hole 65 in the longitudinal direction is determined by the arc-shaped hole 23 provided in the base 10 (see FIG. 2).
In the longitudinal direction.

On the other hand, the sliding contact substrate 68 is formed by providing a desired sliding contact pattern on the lower surface of an arc-shaped resin sheet. Instead of using the sliding contact substrate 68, a second sliding type object may be formed by directly casting a punched metal plate having a sliding contact pattern shape on the lower surface of the sliding type object main body 61.

Next, as shown in FIG. 1, the compression coil spring 80 is formed by winding a spring material many times. Although the compression coil spring 80 is shown in an arc shape in FIG. 1, it is actually linear when no load is applied. The winding end portions 81 at both ends of the compression coil spring 80,
Each of 83 is linearly extended and formed so as to be located on the lower surface of the compression coil spring 80 as shown in FIG.

Next, as shown in FIG. 1, the first cover 90 is formed by stamping a metal plate to form a circular hole 91 into the center of which the rotary shaft 41 of the first sliding die 40 is inserted. A click portion 93 having a circular arc shape and having a projection 92 projecting downward at the center thereof; and four through holes 95 inserted into the four caulking projections 21 provided on the base 10.
And the base 10 is bent downward from the outer periphery thereof.
Are provided with three locking projections 97 for locking to the three locking portions 19 provided.

Next, as shown in FIG. 1, the second cover 100 is formed by stamping a metal plate to form a circular hole 101 in the center thereof for inserting the rotary shaft 63 of the second sliding die 60. At the same time, it protrudes in a tongue shape from the outer periphery thereof and is bent downward so that the claw locking recess 27
And a locking piece 103 inserted therein. A through hole 105 is provided in a portion of the locking piece 103 including the bent corner.

Next, as shown in FIG.
The metal plate is stamped and provided with locking claws 111 on its outer periphery.

In order to assemble the rotary electronic component, first, the base 10 is placed on the lower cover 110. At this time, the locking claw 111 is located at the position of the claw locking recess 27. Next, the first slidable object 40 is stored in the storage recess 13 of the base 10, and the second slidable object 60 is stored in the storage recess 11. At this time, the support shaft 15 of the base 10 is inserted into the through hole 42 of the first sliding die 40 and is supported rotatably, and at the same time, the base 10 is inserted into the hole 62 of the second sliding die 60. The inner wall 17 is inserted and rotatably supported.

Next, the first cover 90 is attached so as to cover the first sliding die 40, and is pushed in close contact with the upper surface of the inner wall 17 of the base 10, so that the locking portion of the base 10 19
The locking projection 97 is locked at the position. At the same time, caulking protrusion 21
Is inserted into the through hole 95. Then, the tip of the caulking projection 21 is caulked.

Next, an arc-shaped hole 65 of the second sliding die 60 is formed.
The compression coil spring 80 is inserted into the hole 23 and the support projection 66 provided on the second sliding mold 60 with both ends of the compression coil spring 80.
Insert and support. At this time, the compression coil spring 8
The two end surfaces of the hole 0 elastically contact both end surfaces of the holes 23 and 65.

Then, the second cover 100 is placed on the second sliding die 60 and is pressed against the upper surface of the base 10. At this time, the four locking pieces 103 of the second cover 100
Is inserted into the claw locking recess 27 of the base 10.

Then, the locking claws 111 of the lower cover 110 are bent and engaged in the through holes 105 of the second cover 100. Thereby, the rotary electronic component 1 is completed.

In the present embodiment, the locking claw 111 is locked in the through hole 105 of the portion bent downward in the locking piece 103 because the bent portion at the tip of the locking claw 111 is bent. This is to reduce the thickness of the second case 100 so as not to be put on the second case 100.

FIG. 7 is a schematic sectional side view of the rotary electronic component 1 assembled as described above. In addition, the cross section of each part is different for convenience of explanation.

As shown in FIG. 3, the sliding body 43 of the first sliding body 40 and the sliding body 6 of the second sliding body 60 are provided.
1 are located on the same plane on the base 10. In other words, the thickness is the same as that of the rotary electronic component having one sliding type object, even though the two sliding type objects 40 and 60 are pivotally supported around the same rotation axis.

The compression coil spring 80 is completely housed in the hole 23 of the base 10 and the hole 65 of the second sliding die 60, and there is no portion exposed above and below. Therefore, the thickness of the rotary electronic component 1 does not increase at all by attaching the coil spring 80 for compression. The two holes 23,
Since the upper and lower surfaces of the coil 65 are covered by the second cover 100 and the lower cover 110, the compression coil spring 80 does not jump out.

The winding end portions 81 and 83 at both ends of the compression coil spring 80 are located so as to substantially abut on the lower cover 110. Therefore, even when the compression coil spring 80 is compressed or returns to the original state, it does not rotate and is reliably held at this position.

The projection 92 provided on the first cover 90
Is the click surface 4 of the uneven shape provided on the first sliding mold 40.
It is in contact with 6.

Next, the operation of the rotary electronic component 1 will be described mainly with reference to FIG. First, when the first sliding type object 40 is rotated, the sliding contact substrate 45 attached to the first sliding type object 40 is rotated integrally therewith, and the three sliding substrates attached to the base 10 are rotated. The child 120 comes into sliding contact with the sliding contact substrate 45. As a result, a desired output can be taken out from the three terminals 121 (see FIG. 2). At this time, the protrusion 92 provided on the first cover 90
Resiliently touches the unevenness of the click surface 46 of the first sliding die 40 to generate a click feeling.

On the other hand, when the second sliding type object 60 is rotated, the sliding contact substrate 68 attached to the second sliding type object 60 is rotated integrally therewith, and the five sliding substrates 68 attached to the base 10 are rotated. Slider 12
0 is in sliding contact with this, and a desired output can be taken out to five terminals 121.

When the second sliding type object 60 is rotated, the compression coil spring 80 is compressed. Therefore, when the rotation of the second sliding type item 60 is stopped and no load is applied, The compression coil spring 80 automatically returns to the original position by the elastic force.

The automatic return operation will be described in detail. FIG. 8 is a view showing the operation of the compression coil spring 80, and shows the relationship between the base 10, the second sliding die 60, and the compression coil spring 80.

As shown in FIG. 9A, in a no-load state, both ends of the compression coil spring 80 are at both end surfaces of the hole 23 of the base 10 and both end surfaces of the hole 65 of the second sliding die 60. At the same time, they are in elastic contact, and their positions are defined at this position.

Next, as shown in FIG. 5B, when the second sliding die 60 is rotated clockwise (in the direction of the arrow), the left end of the compression coil spring 80 is moved to the second sliding die 60. However, the compression coil spring 80 does not move from its original position because the right end of the compression coil spring 80 remains locked to the end surface of the hole 23 of the base 10. Therefore, the compression coil spring 80 is compressed.

When the rotation of the second slide-type object 60 is stopped and the load is in a no-load state, the second slide-type object 60 is shown in FIG. Automatically returns to the original state. It is the same even if it rotates in the opposite direction.
In the case of this embodiment, the rotation angle of the second sliding die 60 is 80 ° on each of the left and right sides (160 ° on both sides).

As described above, in this embodiment, the winding end portions 8 at both ends of the compression coil spring 80 are used.
The compression coil spring 80 is securely held at this position without rotating even when the compression coil spring 80 is compressed or returns to its original state. ing.

If the compression coil spring 80 does not have such a structure, the compression coil spring 80 will rotate irregularly during operation. Is located at the boundary between the base 10 and the second sliding die 60, and when the second sliding die 60 is rotated, the end of winding of the compression coil spring 80 is After once moving on the end surface, the end portion of the winding may be disengaged from the end surface of the hole 65, and the surface shifted by one turn of the compression coil spring 80 may vigorously contact the end surface. This is because there is a possibility that such a loud sound may be generated.

Although one embodiment of the present invention has been described in detail, the present invention is not limited to this, and for example, the following modifications are possible. The compression coil spring having the above structure is applicable not only to a rotary electronic component having two sliding members as in the above embodiment, but also to a rotary electronic component having one sliding member. May be.

In the above embodiment, the sliding type substrate is provided on the sliding type object, and the slider is attached to the base. Alternatively, the slider may be attached to the sliding type side. Further, a sliding contact pattern may be provided directly on the base.

In the above embodiment, arc-shaped holes are provided in the base and the second sliding mold for accommodating the compression coil springs, but arc-shaped grooves may be provided instead of the holes.

In the above embodiment, the angle between the base for accommodating the compression coil spring and the hole of the second sliding object is 150 °.
However, the present invention is not limited to this, and other angles may be used. In the case where the hole and the sliding contact substrate are provided on the same circumference as in the above embodiment, it does not matter that the angle of the hole is 180 ° or more. This is because in this case, the angle of the sliding contact substrate becomes 180 ° or less. However, when the hole and the sliding contact substrate are not arranged on the same circumference, the angle of the hole can be increased to approximately 360 °. At this time, the sliding contact substrate is provided outside or inside the hole.

[0055]

As described in detail above, the rotary electronic component according to the present invention has the following excellent effects. A compression coil spring was used as a resilient member for automatic return, and this was housed in an arc-shaped hole or groove provided in both the base and the sliding type object. It is not necessary to provide any space in the thickness direction, and the thickness of the rotary electronic component can be reduced accordingly. The structure is also simple.

Since the structure allows both of the two sliding-type objects to be mounted on one base, the thickness of the rotary electronic component can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a rotary electronic component 1 according to one embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a base 10;

FIG. 3 is a plan view showing eight sliders 120. FIG.

FIG. 4 is an exploded perspective view of the first sliding type object 40.

FIG. 5 is an exploded perspective view of a second sliding type object 60.

FIG. 6 is a view of the compression coil spring 80 as viewed from its end face side.

FIG. 7 is a schematic side sectional view of the assembled rotary electronic component 1.

FIGS. 8A and 8B are explanatory diagrams of the operation of the compression coil spring 80. FIGS.

FIG. 9 is a schematic side sectional view showing a conventional rotary electronic component.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotary electronic component 10 base 23 hole 40 first sliding type object 45 sliding contact substrate 60 second sliding type object 62 hole 65 hole 68 sliding contact substrate 80 compression coil spring 120 slider

Claims (3)

(57) [Claims] 1. A structure comprising a rotatable slide-type object rotatably supported, and a base on which the slide-type object is mounted, wherein a desired output is obtained by rotating the slide-type object. In the rotary electronic component of (1), at a position separated by a predetermined distance from a rotation center axis of the sliding-type object and at a position facing the sliding-type object and the base, each of the rotating electronic components is substantially arc-shaped and has substantially the same length. Holes or grooves, and house the coil springs in the holes or grooves provided in both the sliding mold and the base.
At the same time, the end of the coil spring ends at the end
Stretched so that it is not located at the end of the hole or groove provided
Rotating the electronic component, wherein it is. 2. A second sliding member which is rotatably supported and a second sliding member which is rotatably supported and has therein a hole for accommodating the first sliding member. A mold, and a base on which the first sliding mold and the second sliding mold are placed. The first sliding mold is inserted into a hole of the second sliding mold. A structure in which objects are stored and placed on the base, and desired outputs are taken out by rotating the first sliding type object and the second sliding type object, respectively. At positions at a predetermined distance from the rotation center axis of the second slidable object and opposed to the second slidable object and the base, holes each having a substantially arc shape and substantially the same length are provided. Alternatively, a rotary electronic component provided with a groove, and an elastic member is housed in a hole or a groove provided in both the second sliding type object and the base. 3. The rotary electronic component according to claim 2, wherein said elastic member is a coil spring.