JP2003123590A - Control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control with quality and easy assembly which can be thinned, and a rotary electric component using it. SOLUTION: In the control 100 for an electronic component composed by attaching a display plate 90 to a control body 80, an engaging mechanism comprising an elastically deforming arm 85 provided on the control body 80 and extending in a planar direction and a locking part 92 provided on the display plate 90 and engaging with the arm 85 by placing the display plate 90 on the control body 80 and rotating it is provided between the control body 80 and the display plate 90.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knob attached with a display plate used for various electronic parts.

[0002]

2. Description of the Related Art Conventionally, a metal display board is sometimes attached to the surface of a knob used for various electronic parts. This is because there are cases where it is desired to make the knob itself multicolored and where various displays (characters, figures, symbols) are displayed on the surface of the knob. However, if the display plate is made of metal, the color is limited and it is not possible to give a high-class feeling.

On the other hand, if the display plate is made of a mold resin, the knob can have various colors and a high-class feeling can be obtained. However, in order to securely attach the molded resin display plate to the knob body, the snap-in method, that is, the claw portion provided at the tip of the arm protruding from the display plate is inserted into the engagement hole provided in the knob body. When the method of engaging the both is used, there is a problem that the thickness of the knob becomes thick because the claw portion projects from the lower surface of the knob body.

In order to solve this problem, a projection is provided on the lower surface of the display plate, and this projection is inserted into a hole provided in the knob body. The tip of the projection protruding from this hole is caulked by heat to crush it. Good. However, in the case of this fixing method, there is a problem that a manufacturing cost cannot be reduced because a separate heat caulking step is required in addition to the step of attaching the display plate to the knob body.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and an object thereof is a knob which has a high-class feeling, can be made thin, and is easy to assemble, and a rotary electronic device using the same. It is to provide parts.

[0006]

In order to solve the above-mentioned problems, the present invention provides a knob for electronic parts in which a display plate is attached to a knob body.
An elastically deformable arm that is provided on either the knob body or the display plate and that extends in the surface direction, and that the display plate that is provided on either the display plate or the knob body is placed on the knob body and rotated. An engaging mechanism including a locking portion that engages with the arm is provided.

Further, the display plate is supported by an arm so as to be vertically movable in a state where a predetermined gap is provided with respect to the knob main body, and the display plate is pressed by a switch mechanism installed under the knob main body. It is preferable to provide a part.

Further, the knob according to the present invention is used as a knob for a rotary electronic component having a rotary electronic component body on which a rotary knob for operating the rotary electronic component body to change its output is attached. It is preferable.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic sectional view showing a rotary electronic component using a knob according to an embodiment of the present invention, and FIGS. 2 and 3 are exploded perspective views of the rotary electronic component. It is an exploded perspective view of the entire electronic component.

As shown in FIG. 1, this rotary electronic component is
On the mounting plate 10, the rotary substrate 40 having the flexible substrate 20 and the slider 30 mounted on the lower surface, and the click spring 50.
, Click plate 60, case 70, knob 100
It is configured by attaching (the knob body 80 and the display plate 90). Each component will be described below.

The mounting plate 10 is made of a metal plate having a disc-shaped rigidity, and mounting holes 11 are provided at four locations on the outer periphery thereof.

The flexible substrate 20 is provided with a switch contact pattern 21 on a flexible synthetic resin film formed in a substantially circular shape, and the mounting hole 11 of the mounting plate 10 is provided.
And a mounting hole 22 is provided at a position facing to.
The switch contact pattern 21 is a pattern for a sliding switch, and is composed of two rows of patterns 211 and 212. A lead-out portion 23 is drawn out to the outer peripheral portion of the flexible substrate 20, and a lead-out circuit pattern from each of the patterns 211 and 212 is led out to the lead-out portion 23 although not shown.

The slider 30 is made of an elastic metal plate, and is formed by bending two arms 32 downward from a base 31 and providing a sliding contact portion 33 at each tip thereof. The base 31 is provided with a mounting hole 34.

The rotary mold 40 is formed by molding a synthetic resin into a substantially disc shape. A protrusion 41 projects from the center of the upper surface of the rotary mold 40, and three circular arc-shaped holes 42 are formed on the upper surface. Has been. Four small protrusions 43 are provided around the protrusion 41. The lower surface of the rotary mold 40 is concave, and a small protrusion 44 for fixing the slider 30 is projected.

The click spring 50 is formed by forming an elastic metal plate into a ring shape, is provided with an elastic contact portion 51, and is provided with a hole 52 at a position facing the small projection 43 of the rotary mold 40. There is.

The click plate 60 is formed by forming a metal plate into a substantially ring shape, an opening 61 is provided at the center thereof, and click engaging holes 62 are formed at equal intervals. Two tongue-shaped locking projections 63 are provided at predetermined positions on the outer circumference of the click plate 60.

The case 70 is made of a mold resin, and is formed in a circular box shape having an opening on the bottom surface. An opening 71 is provided at the center of the upper portion of the case 70. A small projection 72 is projected at a position facing 22. A recess having the same shape as the outer periphery of the click plate 60 is provided on the lower surface of the case 70.

FIG. 4 is a perspective view of the assembled knob 100 as viewed from the back side. The knob 100 is the knob body 80
And a display board 90. Knob body 80
Is formed by forming a mold resin into a substantially disc shape, and circular recesses 81 and 82 are provided on the upper surface and the lower surface, and an opening 83 penetrating the upper center is provided. In the recess 81,
Two arcuate penetrating openings 84 at opposite predetermined positions
In the opening 84, elastically deforming arms 85 extending in an arc shape from one end of the inner side surface thereof toward the surface direction (circumferential direction) of the knob body 80 are provided. At the tip of this arm 85, the locking projections 8
Locking portions are formed by projecting 6 and 87 downward.
Further, three arc-shaped projections 88 project from the center of the lower surface of the knob body 80.

The display plate 90 is formed by molding a mold resin into a disc shape, has a protrusion 91 at the center of the lower surface, and has two U-shapes at a position near the outer periphery of the lower surface facing the arm 85 of the knob body 80. The locking portion 92 is provided.

Next, a method of assembling this rotary electronic component will be described. First, the click spring 50 is arranged on the upper surface of the rotary mold 40, and the small protrusion 43 of the rotary mold 40 is clicked.
Then, the rotary mold 40 and the click spring 50 are integrally fixed by thermally crimping the tip of the small protrusion 43 protruding from the upper surface of the click spring 50. Further, the slider 30 is arranged on the lower surface of the rotary mold 40, the small protrusion 44 of the rotary mold 40 is inserted into the mounting hole 34 of the slider 30, and the tip of the small protrusion 44 is heat-crimped in the same manner as above. Rotating type 40
And the slider 30 are integrally fixed.

Next, the click plate 60 is attached to the concave portion having the same shape as the outer periphery of the click plate 60 on the lower surface of the case 70.
It should be noted that grease or the like may be loaded in the recess to increase the adhesion between the case 70 and the click plate 60.

Next, the display plate 90 is placed on the upper surface of the knob body 80, and the display plate 90 is inserted into the recess 81 of the knob body 80. At this time, the locking portion 92 of the display plate 90 is inserted into the front end of the arm 85 of the opening 84 of the knob body 80. By rotating the display plate 90 to the left when viewed from above by a predetermined angle from the above state, the tip of the arm 85 is inserted into the locking portion 92, and the locking portion 92 locks the arm 85, as shown in FIG. The knob body 80 is engaged by entering between the protrusions 86 and 87.
And the display plate 90 are engaged and fixed. That is, the locking projections 86, 8 provided at the tip of the arm 85 of the knob body 80.
The engagement portion composed of 7 and the engagement portion 92 of the display plate 90 constitute an engagement mechanism.

Next, the case 70 is arranged on the lower surface of the knob 100 having the display plate 90 attached to the knob body 80, and the protrusion 88 of the knob body 80 is rotatably inserted into the opening 71 of the case 70 to pivotally support it. .

Next, the rotary type object 40 having the slider 30 and the click spring 50 attached is housed in the lower surface of the case 70.
At that time, the three protrusions 88 of the knob 100 are inserted into the holes 42 of the rotary mold 40, and the tips of the protrusions 88 protruding from the lower surface of the rotary mold 40 are thermally caulked, whereby the knob 100 and the rotary mold 40 are integrated. Fixed to.

Next, the flexible substrate 20 and the mounting plate 10 are arranged below the rotary mold 40, and the small protrusions 72 on the outer peripheral lower surface of the case 70 are attached to the mounting holes 22 of the flexible substrate 20 and the mounting plate 10. The small projections 72 are inserted into the holes 11 and the tips of the small projections 72 are fixed by heat caulking on the back side thereof. This completes the assembly of this rotary electronic component. The entire portion of the rotary electronic component excluding the knob 100 constitutes the rotary electronic component main body.

Next, the operation of this rotary electronic component will be described. When the knob 100 is rotated in FIG. 1, the rotary object 40 rotates integrally with the knob 100, and the slider 30 slides on the switch contact pattern 21 of the flexible substrate 20 to change its on / off state, and at the same time, the click spring. The elastic contact portion 51 of 50 repeatedly inserts into and removes from the click engaging hole 62 of the click plate 60 to generate a click sensation.

As described above, the arm 85 of the knob body 80
The knob body 80 and the display plate 90 can be reliably engaged with each other by the engagement mechanism including the engagement portion including the engagement protrusions 86 and 87 and the engagement portion 92 of the display plate 90 provided at the tip of the. Since the engaging mechanism is provided by utilizing the thickness portion of the knob, the knob 100 can be thinned. Further, since the display board 90 is made of a mold resin, the knob 100 can have various colors to give a high-class feeling. In the above-described embodiment, the example in which the display plate 90 is attached to the knob body 80 and then the rotary electronic component is assembled is shown. However, after the rotary electronic component other than the display plate 90 is assembled, the display plate 90 is held in the knob body. 80 may be engaged.

FIG. 5 is a diagram showing a rotary electronic component using a knob according to another embodiment of the present invention. The difference between this rotary electronic component and the rotary electronic component shown in FIG. 1 is that
The pressing portion 93 is provided on the display plate 90, and the flexible substrate 20
That is, the switch contact 24 and the movable contact plate 25 are provided.

The switch contact 24 provided on the flexible substrate 20 is a pattern for a pressure switch, and is composed of a central pattern and a pattern surrounding the periphery and contacting the outer periphery of the movable contact plate 25. Further, the movable contact plate 25 is made of a metal plate, and when the movable contact plate 25 is inverted when pressed, the above-described central pattern and the surrounding pattern are brought into conduction, and the switch is turned on.

The pressing portion 93 provided on the display plate 90 is provided so as to project downward from the tip of the projection 91 at the center of the lower surface of the display plate 90.
It is axially supported by an opening 45 provided at the center so as to be vertically movable, and is arranged so that the tip of the pressing portion 93 contacts the upper surface of the movable contact plate 25. At this time, a gap is formed between the lower surface of the display plate 90 and the upper surface of the recess 81 of the knob body 80. At this time, the arm 85 of the knob body 80 may be slightly bent upward or may not be bent.

When the display plate 90 is pressed, the pressing portion 93 of the display plate 90 presses the movable contact plate 25, and the movable contact plate 25 is inverted, so that the switch contact 24 is turned on. on the other hand,
When the knob 100 is rotated, the switch contact pattern 21 is turned on / off as in the above embodiment.

As described above, since the display plate 90 is provided with the pressing portion 93 and the display plate 90 also has the function of the pressing knob of the pressing switch, it is not necessary to provide a separate pressing member, and the number of parts is reduced. The knob can be made thinner.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims and the technical idea described in the specification and drawings. Can be modified. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the functions and effects of the present invention are exhibited. For example, in the present embodiment, the engagement mechanism is configured by the elastically deforming arm 85 provided on the knob body 80 and extending in the surface direction and the locking portion 92 provided on the display plate 90 and engaging with the arm 85. However, the present invention is not limited to this, and the engagement mechanism may be configured by providing an arm on the display plate 90 and providing a locking portion on the knob body.

[0034]

As described in detail above, the present invention has the following excellent effects. Between the knob body and the display plate, since the engagement mechanism that engages by placing the display plate on the knob body and rotating is provided,
The engaging mechanism can reduce the thickness of the knob without increasing the thickness of the knob, and at the same time, the knob body and the display plate can be reliably engaged. In addition, the knobs can be made in various colors to give a high-class feeling.

Further, the display plate is supported by the arm so as to be movable up and down in a state where a predetermined gap is provided with respect to the knob body, and the display plate is provided with a pressing portion for pressing a switch mechanism installed under the knob body. Since the display plate is provided, the display plate can have the function of the pressing knob without providing a separate pressing member, and the number of parts can be reduced and the knob can be thinned.

If the knob according to the present invention is used as the knob used for the rotary electronic component, the rotary electronic component can be made thinner.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a rotary electronic component using a knob according to the present invention.

FIG. 2 is an exploded perspective view of the upper half of the rotary electronic component.

FIG. 3 is an exploded perspective view of the lower half of the rotary electronic component.

FIG. 4 is a perspective view of a knob 100 viewed from the back surface side.

FIG. 5 is a schematic sectional view showing a rotary electronic component using another knob according to the present invention.

[Explanation of symbols]

10 Mounting plate 20 Flexible substrate 21 switch contact pattern 24 switch contact pattern 25 movable contact plate 30 slider 32 arms 33 Sliding contact 40 rotary type 50 click springs 51 bullet contact part 60 click board 62 Click engagement hole 70 cases 80 knob body 81 recess 84 opening 85 arms 86 Locking protrusion 87 Locking protrusion 90 display board 92 Locking part 93 Pressing part 100 knobs

Claims (2)

[Claims] 1. A knob for an electronic component, comprising a display body attached to a knob body, wherein an elastic deformation is provided between the knob body and the display plate, the elastic deformation being provided in either the knob body or the display plate and extending in a plane direction. And an engagement mechanism that is provided on either the display plate or the knob body and that engages with the arm by placing the display plate on the knob body and rotating the arm. A knob that is characterized by being. 2. The display plate is supported by the arm so as to be movable up and down in a state where a predetermined gap is provided with respect to the knob main body, and the display plate has a switch mechanism installed below the knob main body. The knob according to claim 1, further comprising a pressing portion for pressing.