JPH0445047Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to operation knobs for volume adjustment, tuning, power ON/OFF, etc. installed in portable tape players, radios, televisions, etc. The present invention relates to a movement prevention mechanism that prevents an operation knob from being moved inadvertently.

[Conventional technology]

Examples of this type of small electronic device that can be inserted into the chest pocket of conventional clothes include AM radio,
There are LCD TVs, etc. Figure 7 is an overall perspective view of a conventional pocketable AM radio.
FIG. 8 is a sectional view of the main part thereof. In FIGS. 7 and 8, a rotary operation knob 21 is mounted on the case side 11 of the case 1 molded from ABS resin or the like.
is fixed to a shaft 3 for volume adjustment or tuning. The outer peripheral portion of the rotary operation knob 21 slightly protrudes from the notch 41 in the case side surface 11.

Similarly, a slide type operating knob 22 for band switching, etc. is arranged on the case front 12, and the knob operating portion slightly protrudes from the notch 41 of the case front 12. For portable radios etc., cutout 4
By placing fingers on the outer periphery or tip of the knobs 21 and 22 protruding from the knobs 1 and 41 and rotating or sliding them, volume adjustment, tuning, band switching, power ON/OFF, etc. are performed.

[Problem that the invention attempts to solve]

However, if you carry a radio or the like that has a tuning mechanism for rotating this type of operating knob in your pocket or bag, the protruding rotating operating knob 21 may come into contact with your clothes or surrounding objects, as shown in Figure 8. This can cause inconveniences such as the volume to change or channel selection to go awry.

Similarly, in the case of a tape player or the like that has a sliding mechanism for sliding the operating knob 22, the operating knob 21 may come into contact with surrounding objects and slide carelessly, resulting in changes in sound quality or tape speed. This caused various inconveniences, such as the power turning on and off, wasting battery power, and recording being interrupted midway through.

[Means for solving problems]

The present invention was developed to solve the above problems, and includes a case in which the operating knob is housed with a notch for operating the operating knob from the outside, and the area around the notch is easily bent by the force of the finger. It is characterized in that the operating knob is arranged inside the case so that the operating knob is located inside the notch when not in operation.

The mechanism for preventing movement of the operating knob of this case is that the operating knob is arranged inside the case, and the tip of the knob does not protrude from the surface of the case, so that the operating knob does not move inadvertently. Further, when operating the operating knob with a finger, the force of the finger flexes the area around the notch, the finger touches the operating knob, and the knob is moved. This allows you to adjust the volume and tune without any trouble.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings of FIGS. 1 to 6.

Fig. 1 is an external perspective view showing an example of a movement prevention mechanism for an operating knob installed in a portable tape player, radio, etc., and Figs. 2a and 2b are rotary operating knobs shown in Fig. 1. 3a and 3b are sectional views of other embodiments, and FIG. 4 is a sectional view of another embodiment of the operation knob movement prevention mechanism shown in FIG. 1. FIG. 5 is a perspective view of a main part showing still another embodiment of the structure shown in FIG. 4, and FIG. 6 is a sectional view thereof.

In addition. In each of the above figures, the same reference numerals are given to the parts corresponding to those in FIGS. 7 and 8, which are the conventional examples described above, and the explanation thereof will be omitted.

The differences between Figure 1 and Figure 7 are as follows:
The tips of the rotary operating knob 21 and the sliding operating knob 22 are housed inside the case so that they do not protrude beyond the case 1, and the thickness around the notches 41, 41 for operating the operating knobs from the outside is made thinner so that they are easily bent. This is because the portions 45, 45 are formed.

In such a configuration, if a nearby object comes into contact with the case while carrying the radio or tape player in a jacket pocket or bag, the second
Since the rotation operation knob 21 is housed inside the case 11 as shown in the sectional view of FIG. a, the rotation operation knob 21 is not rotated. Therefore, the volume will not change or the channel selection will not go awry. Furthermore, when operating the rotation operation knob 21 with a finger, as shown in the cross-sectional view of FIG. It can be rotated by touching the knob 21.
Therefore, volume adjustment, tuning, etc. can be performed without any trouble.

FIGS. 3a and 3b are cross-sectional views showing other embodiments. In this example, cases 11 and 12
By adhering a thin sheet material 45 made of polyester, vinyl chloride, polyethylene, rubber, etc. to the surface of a thick material such as ABS resin forming the notch 41, the area around the notch 41 can be easily bent. FIG. 3a is a cross-sectional view accommodating a rotary operation knob, and FIG. 3b is a sectional view accommodating a sliding type operation knob.

FIG. 4 is an external perspective view showing still another embodiment. In this embodiment, by extending the slit 43 around the notch 41, the area around the notch can be easily bent. In this example,
A thin sheet material 45 shown in FIG. 3 is adhered to the surfaces of the cases 11 and 12, and the notch 4
By providing the slit 43 in 1, the area around the notch can be made more flexible. FIG. 5 is a perspective view of a main part of still another embodiment in which a protrusion 47 surrounding the slit is provided in the configuration shown in FIG. 4, and FIG. 6 is a sectional view thereof. In this embodiment, contact with surrounding objects is caused by the protrusion 4 surrounding the notch.
7, it is possible to more reliably prevent erroneous operation due to contact between the rotary knob and the operation knob. Note that the protrusion 47 surrounding the notch is formed by press-forming the thin sheet material shown in FIG.
There are two methods: gluing the entire surface of the case to the ABS resin that forms the case, gluing sheet material only around the notch, and integrally molding it with ABS resin, etc., and the configuration of the present invention can be achieved with either method. can.

The present invention is not limited to operation knobs for volume adjustment, tuning, and band switching of portable tape players and radios, etc., but also for adjusting the sensitivity of integrated video cameras, adjusting the playback speed of portable video decks, and controlling treble and bass. It can be implemented on various portable devices such as operation knobs for adjustment.

[Effects of the invention] According to the invention, the operating part of the operating knob is housed inside the case, and the area around the notch for operating the operating knob from the outside is formed of a flexible member, so that the operating knob can be mounted easily. Even if you carry the device in your jacket pocket or bag, the control knobs will not come into direct contact with surrounding objects. Therefore, the operation knob will not be moved inadvertently.
The volume, channel selection, and band will no longer change from the set values. In addition, when operating the control knob with your fingers, the area around the notch is flexed by the force of your fingers, allowing you to touch and operate the control knob, which prevents erroneous operation or malfunction of the device, increasing certainty and reliability. .

Furthermore, according to the present invention, the operating knobs do not protrude outside the case, and the external contour of the device is streamlined and has an extremely well-proportioned external design, resulting in excellent effects such as increased commercial value. .

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing an embodiment of the movement prevention mechanism according to the present invention, and FIGS. 2a and 2b are
3A and 3B are sectional views of main parts of another embodiment, and FIG. 4 is an external perspective view of another embodiment.
Fig. 5 is a perspective view of the main part of the embodiment in which the protrusion is provided in Fig. 4, Fig. 6 is a sectional view of the main part of Fig. 5, Fig. 7 is an external perspective view of the conventional example, and Fig. 8 is the main part of the embodiment shown in Fig. FIG. 3 is a cross-sectional view of a main part showing the operating state of the operating knob shown in the figure. 1... Case, 3... Axis, 11... Case side, 12... Case front, 21... Rotary type operation knob, 22... Slide type operation knob, 41...
Notch, 43...Slit, 45...Easy to bend portion, 47...Protrusion.

Claims (1)

[Scope of utility model registration request] The case housing the operating knob is provided with a notch for operating the operating knob from the outside, and the area around the notch is made of a material that is easily bent by the force of the finger, so that the operating knob is located inside the notch when not being operated. A mechanism for preventing the operation knob from moving, characterized in that the operation knob is arranged inside the case so as to prevent the operation knob from moving.