JPH0414820Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a push knob device for audio equipment, and more specifically, to a push knob device that can select the reach of the push knob.

[Conventional technology]

A cross-sectional view of a conventionally well-known push knob device for audio equipment is shown in FIG.
Push knobs 3, 3... are attached to the front panel 4 in correspondence with.... If a stepped portion 4a is formed on the front panel 4 for design reasons, the distance from the front panel 4 to the switch 2 attached to the printed wiring board 1 will necessarily be different. For long parts, a push knob 3 with a large reach R is used.

[Problem to be solved]

Therefore, a push knob with a different reach is required for each mounting position of the push knob 3 on the front panel 4, and several types of push knobs must be molded, which is cumbersome to manufacture and also makes parts management difficult during assembly. It's a hassle.

[Technical means to solve the problem]

Therefore, this idea was designed to allow the switch to be operated from any position on the front panel using a single type of reach push knob, regardless of the distance from the front panel to the switch. It is characterized in that at least one stepped portion is formed.

【Example】

Hereinafter, the configuration of this invention will be explained with reference to embodiments shown in the attached drawings. First, in Figure 1,
Reference numeral 11 indicates a printed wiring board, and this printed wiring board 11 is provided with switches 12, 13, etc., such as tact type switches, and one end of these switches 12, 13, etc. protrudes from the front side of the front panel 21. Installed push knob 2
It is turned on and off by 2, 23, and so on. That is, the front panel 21 has a stepped portion 2 in the middle portion.
1a, and has a portion X close to the printed wiring board 11 and a portion Y far from the printed wiring board 11. The front panel 21 is formed with cylindrical guide portions 24 and 25 that accommodate the push knobs 22 and 23 in correspondence with the switches 12 and 13. 23 are each mounted in such a way that only linear movement is permitted. The push knobs 22 and 23 have the same shape, so to explain one of them as a representative, the contact end such as a fingertip protrudes from the surface of the front panel 21, and the operating end that contacts the switch 12. Locking claws 22a are formed on both sides of the guide portion 24 to prevent the guide portion 24 from escaping. An operating portion 22A is formed between the locking claws 22a, 22a through a slit 22b, and an operating protrusion 22B and an operating recess 22C are formed on the end face of the operating portion 22A. The difference in level between the operation protrusion 22B and the operation recess 22C is set to be equal to the difference in level between the step 21a of the front panel 21. Like the push knob 22, the push knob 23 also has a locking pawl 23a, a slit 23b, and an operating portion 23.
A, an operation protrusion 23B, and an operation recess 23C are formed. Since the push knobs 22 and 23 have the same reach, the push knob 22 attached to the portion X of the front panel 21 near the printed wiring board 11 can operate the switch 12 with the reach _R1 of the operation recess 22C. I can do it. In addition, the switch 13 cannot be operated with the reach R ₁ of the push knob 23c attached to the portion Y far from the printed wiring board 11;
Switch operation is possible by using the reach _R2 of the operation convex portion 23B. FIG. 3 and FIG. 4 show other embodiments,
The operation protrusions 22B, 23B formed on the operations 22A, 23A of the push knobs 22, 23 are the operation recesses 22.
It is located on both sides of C and 23C. In this embodiment, when selecting the longer reach _R2 of the push knob, the center of the push knob is placed eccentrically relative to the center of the switch 13.

[Effect of the idea]

As is clear from the above explanation, the push knob device of this invention has at least two types of reach by providing unevenness on the operating end of the push knob relative to the switch, so that regardless of the mounting position of the push knob, one type of push knob can be used. You can respond accordingly.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a push knob device for audio equipment according to this invention, Fig. 2 is an oblique view of the push knob itself, Fig. 3 is a sectional view of a push knob device according to another embodiment, and Fig. 4 is an oblique view of the push knob itself. FIG. 5 is a sectional view of a conventional push knob device. 11...Printed wiring board, 12,13...Switch, 4,21...Front panel, 22,2
3...Push knob, 22A, 23A...Operation section, 22B, 23B...Operation protrusion, 22C, 23
C...operation recess, 22a, 23a...locking claw, 2
2b, 23b...Slit, 24, 25...Guide portion.

Claims (1)

[Scope of utility model registration request] In a push knob device for audio equipment, in which a switch mounted on a printed wiring board is turned on and off by a push knob equipped on the front panel, a step for selecting the reach is provided at the operating end of the push knob, and the length of the operating reach is A push knob device for audio equipment configured to select a step.