JPS6273511A - Knob unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a knob device suitable for use in, for example, a push knob of an audio device.

[Summary of the invention]

The present invention provides a knob device suitable for use in audio equipment, etc., in which a plurality of holes are provided in a plate having spring properties, and a boss of a push knob is attached to each hole of the plate by caulking. Therefore, since there are no restrictions on the arrangement of push knobs in one color, etc., inexpensive plates with good workability can be used, and the knob device can be constructed at a low cost.

[Conventional technology]

In recent years, many audio devices such as tuners and tape decks are equipped with many functions that require operation.
For this reason, audio devices are commercially available that are provided with a large number of operation knobs for operating each function. Figure 3 is a diagram showing the front sonnel section of a tuner as an example of this type of audio equipment.
There is a display non-channel b that displays the receiving frequency etc. near the center of the screen, and there are multiple push knobs (5) beside this display JR channel b.
a).

(5b)... (5 phrases are provided. These multiple operation knobs (5a), (5b)...(5P) have numbers, symbols, etc. printed on their surfaces, for example, to enable various operation functions. and predetermined operation knobs (5a), (5b)...(5ze)
By pressing , you can operate various functions of this tuner, including channel selection. This operation knob <sa
), (sb)...(If multiple 5 ri are provided,
Since arranging a plurality of single knob devices would require a lot of effort to assemble, it has been proposed to use a unit-shaped knob device to which a plurality of operating knobs are attached.

Hereinafter, a conventional knob device of this type will be explained with reference to FIG. In FIG. 5, (1) shows a printed circuit board, on which a plurality of microswitches (2) are fixed at predetermined intervals.

Each micro switch (2) is a switch reno (
3) is attached to the top surface, and this switch (3)
The circuit connection is switched by a slight stroke movement when the is pressed. Then, print the printed circuit board (1
) Push knobs (5a), (5b)...(5
R) is placed. This push knob (5a),
(5b)...(5P) are outsert molded onto a support plate (4) made of a synthetic resin or a resilient metal plate such as stainless steel. That is, as shown in Figure 6,
Etching.

A plurality of openings (4a) are formed at predetermined intervals in the support plate (4) by pressing or the like, corresponding to the above-mentioned microswitches (2),
A notch (4b) is provided around this opening (4a),
The notch (4b) allows the periphery of the opening (4a) to be easily depressed relative to other parts. Then, push this support plate (4) with the push knobs (5a), (5b).
...(5P), set it in the mold for molding, and fill each opening (4
A plurality of push knobs (5a), (5b), . In this state, numbers, symbols, etc. indicating various operating functions are printed on the surfaces of the push knobs (5a), (5b), . . . (5R). These push knobs (5a), (5b)...(5ρ) are connected to the micro switch (2) - by the switch switching post 51.
1 protrudes and the support plate (4) is placed at a predetermined position as shown in FIG. . Then, with this support plate (4) placed in a predetermined position, the support plate (4) is sandwiched from above and below between the upper press plate (6) and the lower press plate (7), and the surface of the upper press plate (6) is Each push knob (5a), (5b)...
・Construct so that (5P) stands out.

With this structure, as shown in Fig. 5, the operator presses the push knobs (5a), (5b)... (5) and applies pressure P from above to release the support plate. (4) Push knob (
5a), (5b)-(5Il) and the supporting plate (4) around them are pushed down, and the tip of the switch changeover guess 6B pushes the switch plate (3), and the micro switch (
2) is switched.

In addition, push knobs (5a), (5b)...(
5R) is removed, the push knob (5) returns to its original state due to the spring properties of the support plate (4).

In this way, the switch can be operated by pressing the push knob (9).

[Problem that the invention seeks to solve]

However, the conventional knob device configured as described above,
Synthetic resin push knobs (5a), (5b)
(5j) is outsert molded onto the support plate (4), so a metal plate such as stainless steel must be used as the support plate (4) with sufficient heat resistance to withstand the outsert molding. This metal plate is expensive in itself, and requires processing such as etching to provide the opening (4a) and notch (4b), which increases production costs. I get stiff.

In addition, on the support plate (4) around the outer circumference of the push knob (5),
The push knobs (5a), (5b)-(5e) have notches (4
b), and for this notch (4b) multiple push knobs (5a), (5b)...
(5ffi) cannot be placed too narrowly, and the push knobs (5a), (5b)...
There was an inconvenience that (5P) could not be freely arranged. In addition, there are push knobs (5a) attached to the support plate (4), (
5b)...(5ffi) If the number of O is large, the support plate (4)
The mold is large, and since outsert molding is performed with the support plate (4) held between the molds, the mold is also large, and the manufacturing cost of the mold increases. Furthermore, if the push knobs (5a), (5b), ... (51) are to be divided into several colors, molds must be made for each type and molded separately. This has the disadvantage of requiring a plurality of molds and increasing the number of manufacturing steps. Furthermore, the push knobs (5a), (5b)...(5) The mold for molding can only be produced by attaching it to the support plate (4) of a predetermined shape, and the push knobs (5a), (5)
5b)...(5J When changing the arrangement, another mold must be prepared.

In view of these points, it is an object of the present invention to provide a knob device that has no restrictions on the arrangement of push knobs in two colors, etc., and can be constructed at a low cost.

[Means for solving problems]

The knob device of the present invention, as shown in FIGS. 1 and 2, for example, has a plurality of holes (8C) in a plate (8) having spring properties, and pushes the knob into each hole (8C) of the plate (8). Knob (9)
a), (9b)...(94)? The pickpocket is attached by caulking.

[Effect]

The knob device of the present invention has the push knobs (9a), (9b)...(9Q) attached to the plate (8) by caulking.
9b)...(9Q) There are no restrictions on the arrangement of the nine colors, etc., and the plate can be made of synthetic resin, which is inexpensive and has good workability, and can be constructed at low cost.

〔Example〕

Hereinafter, one embodiment of the knob device of the present invention will be described with reference to FIGS. 1 to 3. In FIGS. 1 to 3, parts corresponding to those in FIGS. 5 and 6 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In the knob device of this example, first, the support plate (8) is constructed as shown in FIG. This support plate (8) is made of, for example, polycarbonate with a thickness of 01313 and has spring properties, and is equipped with 12 push knobs (4 vertically x 3 horizontally), which will be described later.
a), (9b)...(92) are installed on the side, and are arranged as shown by the imaginary lines in Fig. 3.Positions for placing the respective push knobs (9a), (9b)...(92) Two pairs of U-shaped grooves (8a) are provided in the
Set of grooves (8a) There is an opening (
8b) and two through holes (
8C).

Push knobs (9a), (9b)...(9 is AB
It is made of synthetic resin such as S resin, and has a roughly box-shaped outer shape, with a switch from the center to the bottom. 01) is protruding, and there are 1 on both sides of this female switch.
A caulking trowel protrudes from two locations in total. This caulking thread (92) has a protrusion length shorter than the switch switching boss t9υ, a diameter of the tip part is narrower, and two caulking threads (92). The spacing between the push knobs (93) is the same as the spacing between the two through holes (8C) on the support plate (8).
, (9b)...(9ε) are provided with protrusions (2) at two symmetrical positions on the lower side.

Push knobs (9a), (9
b)...(9Q), each push knob (9a) of the support plate (8).

(9b)...(9e) Caulk it to the placement part. That is, the push knobs (9al, (9b)...(
9P) switch changeover goss (91) on the support plate (8)
At the same time, the tips (931) of the two caulking disks (921) are inserted into the supporting plate (8b).
After fitting it into the through hole (8C) of 8), heat the tip of this caulking goss (92) with ultrasonic waves, melt it, and caulk it.
, (9b) - (9i') is not made of ABS resin, and the support plate (8) is made of polycarbonate.

The melting temperatures are about 1501:: and 200t::, respectively.

If you heat it to about 150C, push the knob (9a).

(9b)...(Only the 9th side melts, and a good caulking is achieved as shown in Figure 1. Also, the push knob (
9a) = (9b) - (9j is caulked so that it is floating on the support plate (8) with a slight gap S shown in Figure 1. The distance S is longer than the operating stroke of the microswitch (2), which will be described later.In this way, the push knob (9) is attached to the support plate (8) at all positions indicated by the imaginary lines in FIG.
a), (9b)...(92) are caulked and arranged.

Then, press these push knobs (9a) and (9b).
...(9Q) is attached from the top and bottom of the support plate (8),
They are sandwiched between the upper pressing plate fi1 and the lower pressing plate (lB). In other words, the upper pressing plate a1 has a push knob (9a).
, 1Jb)...(The opening (10a) large enough to fit the
), (9b)...(9p) A plurality of them are provided corresponding to the digits fitP. Projections (10b) are provided on the upper sides of two opposing sides of this opening (1Oa). This protrusion (1
0b), with the upper presser plate a holding the support plate (8), push the push knobs (9a), (9b), etc.
・Make it so that it comes into contact with the protrusion (2) of (9Q). In addition, there are push knobs (9a) on all lower press plates,
(9b)...(92) A slightly larger opening (l
la) is the push knob (9) attached to the support plate (8) FC.
There are multiple stages corresponding to the positions of a), (9b)...(92). Due to the presence of this opening (lla), the lower press plate aυ presses the support plate (8) of the U-shaped groove (8a). By holding the support plate (8) between the upper presser plate 0 and the lower presser plate αυ constructed in this way, the push knobs (9a) and (9b) are pushed by the projections (10b) of the upper presser plate α1. ... (9R) can be prevented from protruding upward, and the lower pressing plate (111) can prevent downward deflection of the support plate (8) around the U-shaped groove (8a). K like this and upper press plate α0
and the support plate (8) held by the lower presser plate ff1lK
are placed above the printed circuit board (1), and each push knob (9a), (9b)...(9) is placed on the printed circuit board (1) at a position below the illusion.
2) are connected and fixed, and arranged so that the switch levers (3) face the tips of the push knobs (9a), (9b), . . . (9ffi).

With the above configuration, this switch (3)
When switching the push knobs (9a), (9b)...(9R), the operator presses the push knobs (9a), (9b)...(9R) and applies pressure P from above, as shown in Fig. 1. ) ・-(91) and Pussy-L7
-'Z The support plate (8) around the through hole (8c) in which the push knobs (9a), (9b)...(91 ) and the support plate (8), the distance between the press and the support plate (8) is 5712 degrees, and the switch can be changed! The tip of υ presses the switch (3), and the micro switch (2) switches. Also, when the pressure P to push the push knobs (9a), (9b)...(9R) is removed, the push knobs (9a), (9b)...(9ffi) )'
is restored to its original state. In this way, push the respective push knobs (9g), (9b)...(94ri 1l)
Switches can be operated using Ff, and K.

Since the knob device of the present example is configured in this way, the support plate (8) is equipped with push knobs (9a) and (9).
b)... (9j) need only have enough heat resistance to not melt when caulking, and a synthetic resin material such as polycargenate can be used, which is inexpensive and can be easily processed into a predetermined shape. There is also a push knob (9a).

(9b)...(Installation to the support plate (8) in Clause 9 is done by simply caulking the through hole (8C) of the caulking screw (93), so use the push knob (9a), (
9b)...Put a groove (8a) in (92) to the groove (8a) in order to apply pressure P and to make a good recess in the corner, using the push knob (9a)
, (9b)...-(91), there is no need to provide push knobs (9a), (9b)...(9
A groove (8a) can be provided in the lower part of Il), and each push knob (9a), (9b)...
(9ffi) You can narrow the spacing between all the placements,
Push knob (9a), (9b)...(9β)
can be placed freely. In addition, since it is not necessary to mold all the push knobs (9a), (9b)...(912) a, and one support plate (8) at the same time, the push knobs (9a), (9b)...・
(92) The mold for molding can be made small regardless of the size of the support plate (8), and the manufacturing cost of the mold is low. Furthermore, this also applies to each push knob (9
You can also use the knobs (9a), (9b)...(9Q) to divide the colors in a), (9b)...(91) into several colors.
The same mold can be used for the knobs (9a), (9b) and (91) of the same shape, and the molding of each color on the support plate (8) can be done easily. Push knob (9a), (9b)...(9p)
Attachment (caulking) can be done at the same time, so there is no increase in the manufacturing process. In addition, push knob (9a),
As long as the shapes of (9b)...(9p) are the same, the push knobs (9a), (9b)...( 9
ffi) can be used, making it highly versatile.

In addition, in the above-mentioned example, the support plate (8) is le IJ car? In addition to other springy resin materials, metal materials such as phosphor bronze and stainless steel can also be used. There is also a push knob (9a).

(9b)...(9ffi) is also not limited to ABS resin. Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations can be adopted without departing from the gist of the present invention.

〔Effect of the invention〕

According to the knob device of the present invention, the plate (8
) K push knob (9a), (9b)...(9
By installing the push knob (9a)
, (9b)...(9P), there are no restrictions on the arrangement of the two colors, etc., and there is an advantage that cheap and easily processable materials such as synthetic resin can be used for binding the plate, and it can be constructed at a low cost.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts showing one embodiment of the knob device of the present invention, FIG. 2 is an exploded perspective view of the example shown in FIG.
FIG. 4 is a front view showing an example of the tuner's A-flank section; FIG. 5 is a cross-sectional view of the main part showing an example of a conventional knob device; FIG. 6 is a plan view showing a part of the support plate of the example shown in FIG. (11 is a printed circuit board, (2) is a micro switch, (
8) is a support plate, (8C) is a through hole, (9a), (9b
) = (9ffi) are push knobs, +91)
The symbol is the boss for switching the switch light, and the symbol is the boss for caulking.゛、″

Claims (1)

[Claims] 1. A knob device, characterized in that a plurality of holes are provided in a plate having spring properties, and a boss of a push knob is attached to the hub hole of the plate by caulking.