JPS5929390Y2 - Arm mechanism in push-button tuner - Google Patents

Description

[Detailed description of the invention] The present invention relates to the invention of a arm mechanism for a push-button tuner, which is sufficiently thin at least in the area where the push-button arm is disposed, and which can be used in combination with a receiver and other parts as appropriate. To provide a arm mechanism for a push-button tuner that is suitable for smooth lock-in and lock-out operations, and also to ensure that the fixing operation of the frequency regulating member is performed without causing deviation in the set frequency. .

In a push-button tuner, if the area in which the push-button arm is installed is made thinner, it can be combined with receivers and other equipment in a compact manner, and can be installed compactly for use in vehicles and other applications, and the practical effects will be great. Hey.

For this purpose, various proposals have been made in the past regarding thinner push-button tuners in which the plate surface of the push-button arm is parallel to the tuner's instrument base.

However, in the conventional thinned tuner, a circular hole into which the shaft support of the frequency regulating member is fitted is formed in the arm arm itself, which is parallel to the instrument base, and a cutout connected to the circular hole. This cut portion was compressed to narrow the circular hole and fix the shaft support of the frequency regulating member.

In the structure of such a conventional thinned tuner, the arm arm must have sufficient thickness to ensure strength during the push-in operation of the arm arm. The operation of fixing the frequency regulating member to narrow the formed circular hole cannot necessarily be carried out smoothly and easily.

In particular, in order to facilitate narrowing of the circular hole while ensuring strength to withstand the indentation pressure, one side of the circular hole in the cross arm must be widened and the other side must be narrowed. However, during the fixing operation, the shaft portion of the frequency determining member is clamped from only one side, and the shaft portion is slightly biased, resulting in a deviation in the frequency to be set, which is a serious drawback.

The present invention was devised after further study in view of the above-mentioned circumstances, and it makes it possible to further reduce the thickness of the thinned product as described above, and also has a preferable assembly. In addition to establishing the strength relationship and smoothing the fixing operation of the frequency regulating member,
We have succeeded in eliminating deviations in the frequency to be set due to biasing of the frequency regulating member during the fixing operation.

That is, the specific embodiment of the present invention will be described with reference to the attached drawings.The mechanical relationship of the push button tuner as a whole is as shown in FIGS. 1 and 2. In general, push button reading groups 1 each having a push button 6 (about 5 buttons) are arranged at regular intervals with their plate surfaces parallel to the surface of the table 10. The configuration of each push button reading mechanism arranged in this way is as follows.
~ As shown in Figure 5.

That is, the fixing piece 2 for fixing the frequency regulating member 3 is overlapped with the reading group 1, and the longitudinal center line of the fixing piece 2 is
A fitting hole 2a is formed in the hole 2a for receiving the shaft support 3f of the frequency regulating member 3 described above, and a cutout 2b is formed on the center line in the longitudinal direction from the fitting hole 2a. A circular hole portion 2e that buffers the pinching pressure of the cut portion 2b is provided in series, and pinching portions 2c are provided oppositely on both sides of the open end of the cut portion 2b on the end side that is inserted into the push button 6, Thus, the fixing pieces 2 are formed substantially symmetrically in the width direction.

Further, a slide member 4 having engaging portions 4a, 4a which apply pressure evenly from both sides to the above-mentioned pinching portions 2c, 2c is attached to the push button 6 attached to the proximal end of the above-mentioned reading club 1. The slide member 4 is provided with holding portions 4b, 4b opposite to the reading group 1, so that the slide member 4 can slide relative to the reading group 1 only in the length direction of the reading group 1.

As shown in the figure, the distal end of the frequency regulating member 3 serves as the operating section 3a, but the proximal end (which forms the pivot hole 3b) The head 5b of the pivot 5 is received therein, and the tip end 5a of the pivot 5 protrudes from the insertion hole 11 of the reading chamber 1 to the back surface of the reading chamber 1, and is inserted into the guide hole 15 formed in the table 10. As shown in FIG. 2, a retaining portion 5C is formed in the intermediate portion of the pivot 5 to engage with it to guide the pushing operation of the reading 1. It is fitted into an engaging hole 3c coaxial with the pivot hole 3b in such a manner as to prevent rotational operation.

Furthermore, in this illustrated example, at the tip of the reading board 1 there is provided a mode 1 for operating the switch changeover plate 7 as shown in FIG.
2 is provided and engages with the operating hole 7a of the switching plate 7, and a spring mounting part 13 is formed on one side of the tip of the reading board, and a spring mounting part 13 is formed between the spring mounting part 13 and the device stand 10. A spring 14 for returning the reading 1 is interposed.

To explain the operation of the device according to the present invention as described above, in the out state as shown in FIG.
Since the clamping parts 2c, 2c are not compressed by the engaging parts 4a, 4a of the slide member 4, which slides integrally with the push button 6, the frequency regulating member 3 rotates as appropriate, and the operating part 3a Although the setting position of can be freely changed,
From this state, by pushing the push button 6 in the direction of the arrow in FIG. It moves accurately to equally pinch the pinching parts 2c, 2c from both sides, thereby displacing the pinching parts 'lc, 'lc by the same dimension.

Moreover, such a clamping operation is performed at the long cutout 2b that extends from the circular hole 2e to the insertion portion into the push button 6.

Therefore, the fixing operation of the frequency regulating member 3 can be carried out very smoothly and easily with a light force, and the shaft support 3f of the frequency regulating member 3 is evenly compressed on both sides of the fitting hole 2a, so that it is biased to one side. As shown in FIG. 5, the frequency regulating member 3 can be fixed to the reading group 1 and the fixing piece 2 to form a locked state without any deviation in the set frequency.

As explained above, according to the present invention, the frequency regulating member 3
The shaft support 3f of the fitting hole 2 of the fixing force 2 attached to the reading assembly 1
a, and the fixing piece 2 is formed approximately symmetrically in the width direction, and the clamping parts 2c, 2c on both sides of the opening end with respect to the cut part 2b of the fixing piece 2 are held by the holding parts 4bt4b to hold the length of the reading board 1. The fixing piece 2 is evenly pinched and displaced in the width direction by pressing evenly by the engaging portion 4ay4a formed on the slide member 4 that slides only in the width direction, and the pivot support 3f is rotated by pinching. Therefore, the shaft support 3f is connected to the fitting hole 2.
It is pressed evenly on both sides of a and is identified without being biased, thereby making it possible to smoothly and reliably lock-in the frequency regulating member without causing any deviation in the frequency to be set. This is a highly effective idea in practical terms.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a general plan view of a push-button tuner using a reading mechanism according to the invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 is an illustration of the present invention. FIG. 4 is a perspective view showing the disassembled state of the constituent members of the reading mechanism according to the invention; FIG. 4 is a perspective view showing the assembled state and the frequency regulating member released state;
The figure is a perspective view showing the clamping state of the fixing piece by the push button and the slide piece. However, in these drawings, 1 is a reading board, 2 is a fixing piece,
2a is the fitting hole, 2b is the cut portion, 2c is the clamping portion, 3 is the frequency regulating member, 3a is the pivot portion, 3b is the pivot hole, 3C is the engagement hole, 4 is the slide. Its holding part, b, is its head. 4a is the engaging part thereof, 4b is the pivot, 5a is the tip thereof, 55c is the engaging part, and 6 is the push button.

Claims (1)

[Scope of utility model registration request] The shaft support of the frequency regulating member is fitted into the fitting hole of the fixing piece attached to the cross arm, and the fixing piece is placed on both sides of the open end of the cut portion formed along the length direction of the fixing piece. A clamping part for clamping in the width direction is provided oppositely, the fixing piece is formed approximately symmetrically with respect to a center line in the longitudinal direction, and an engaging part of the slide member is operated by a push button attached to the arm arm. facing the clamping parts, and the slide member is provided with a holding part for the arm arm so that the slide member can slide only in the pushing direction of the arm arm. An arm mechanism in a push-button tuner, characterized in that the clamping part is clamped evenly in the width direction by the engaging part by a pushing operation.