JPS6012811B2 - Alignment structure between scale plate and code plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for aligning a scale plate and a code plate used in, for example, a synthesizer tuner with a program function.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The following is an example of a synthesizer tuner with a program function incorporating the present invention.
FIG. 1 shows a synthesizer tuner with a program function incorporating the present invention as seen from the front, and FIG. 2 shows a mechanical part thereof as seen from the side.
The figures show the state viewed from the upper back side. As shown in FIG. 1, a front panel 2 constituting the front part of a weight body of a radio receiver 1 has AM and FM reception frequencies applied to the surface of a scale plate 4 through a transparent glass plate 3. A rectangular window 6 is formed so that the display scale 5 can be seen.
M and FM operation switches 7, 8 and various knobs such as a tuning knob 9 are provided.

As shown in FIG. 2, the elongated scale plate 4 located on the back of the transparent glass plate 3 has a scale display section 10 having a scale 5 for displaying the received frequency, and Upper and lower guide rail portions 11, 1 that protrude perpendicularly to the back direction
2, and each guide rail part 1
As shown in FIG. 3, a large number of markers 13 and 12 are provided on the markers 13 and 12, respectively, which can be freely moved along the longitudinal direction.
4... are arranged.

These markers 13 and 14 are set at positions corresponding to the scale 5 for displaying the desired received frequency (this is called a preset), and are used to indicate the desired receiving station. In the illustrated example, marker 13 is For FM, the marker 140 indicates each AM receiving station. The large number of markers 13 and 14 are made of a material such as plastic and have the same shape. This marker 1
The side plates 13a and 14a constituting the parts 3 and 14 have a through hole 15 for receiving the tar part of the catcher part, which will be described later.
, 15 are formed. As shown in FIG. 2, a code plate 16 is housed between the upper and lower guide rail sections 11 and 12 and on the back of the scale display section 10. As shown in FIG.

The code plate 16 is inserted from one end side of the upper and lower guide rail parts 11 and 12 as shown in FIG. Projections 17 and 18 are formed along the longitudinal direction on the inner surfaces of the upper and lower guide rail parts 11 and 12, respectively, so that the guide rail parts 11 and 12 cannot be moved at all in the back direction. This code plate 16 is formed into the longest plate shape, which is approximately the same length as the scale plate 4 described above, and has a positioning plate at one end for positioning in the length direction, as shown in FIG. Recesses 20, 20 are formed in the notch 19 and on opposite side edges sandwiching the notch 19, respectively.

Inside the recesses 20, 20, as shown in FIG.
The locking claws 22, 22 of the alignment jig 21 are inserted and engaged. Note that the other end of the code plate 16 is not fixed to the scale plate 4 and becomes a free end. Code plate 16 shaped like this
A code pattern 23 for specifying a division ratio of a programmable divider for changing the receiving frequency is preprogrammed on one side 16a of the receiver.

This code pattern 23 is formed to correspond to the arrangement of the scale 5 for displaying the received frequency formed on the surface of the scale plate 4 described above, and is composed of a non-signal pattern section 24 and a signal pattern section 25. has been done. In the illustrated example, the first to eighth bits are arranged along the length direction of the code plate 16. Next to this 8th bit code pattern, a common terminal portion 26 is formed parallel to the code pattern. On the other hand, two bearings 27 and 28 are provided at both ends of the scale plate 4, as shown in FIG.
is installed. A guide shaft 29 having a circular cross-sectional shape is arranged between the two bearing parts 27 and 28 so as to be freely rotatable with respect to the bearing parts 27 and 28. A concave groove 30 (see FIG. 2) is formed along the length of the guide shaft 29 in order to rotate a catcher portion, which will be described later, in a desired direction. As shown in FIG. 3, a pointer stand 31 is attached to this guide shaft 29, which can freely move along the direction of the koji.

The pointer stand 31 is made of a material such as transparent or translucent synthetic resin and has a generally T-shaped overall shape as shown in FIG. A stopper portion 32 for disabling the camera, a storage portion 34 provided on the back for storing the photointerrupter 33 inside, and a pointer attachment portion 36 provided at the top for attaching the pointer 35 to the stereotactic layer. It is composed of. The former stopper part 32 prevents the pointer stand 31 itself from rotating in the same direction as the guide shaft 29 rotates.As shown in FIG. 31, two protruding plates 38 protruding from the vicinity of the insertion hole 37 for the guide rattan,
39, a connecting plate 40 that connects these protruding plates 38 and 39 at their tips, and protruding pieces 41 and 41 that protrude from the center of the connecting plate 40 in a direction perpendicular to the connecting plate 40. ing.

Two small protrusions 42, 4 are provided at both ends of the latter connecting plate 40.
2 is formed, and by inserting one or both of these small protrusions 42, 42 into the small holes 44, 44 of the contact terminal 43 as a code detection means, the connection plate 4 is attached. It is now possible to

This contact terminal 43 slides onto a code pattern 23 preprogrammed on one side 16a of the code plate 16, as shown in FIG. It was established for the purpose of This contact terminal 43 is always connected to the code plate 1
An elastic force is applied to the entire body so as to make contact with the code pattern 23 of No. 6, and its tip portion is finely cut into a brush shape. The pointer stand 31 having such a configuration can be connected to
It is integrally connected to the tuning thread 45.

Therefore, when the tuning knob 11 is rotated,
The pointer stand 31 is freely moved along the longitudinal direction of the guide shaft 29 by the tuning thread 45 driven thereby. A catcher portion 46 is inserted between the two protruding plates 38 and 39 that constitute the stopper portion 32, and this catcher portion 46 has the following features:
Inside this, it is attached to a guide shaft 29 inserted into an insertion hole 37 of the pointer stand 31.

This catcher section 46 serves to catch the markers 13 and 14 and move them to the scale of the desired reception frequency along with the movement of the pointer stand 31. This catcher section 46 is shown in FIG. A remote control mechanism 47 that is driven by pressing the operation switches 7 and 8 shown in FIG.
48 and a guide shaft 29 which is rotated in a predetermined direction by the mechanism parts 47, 48, and thereby inserted into the through holes 15, 15 of the markers 13, 14.

In the channel selection device having the above configuration, in order to preset markers for a desired broadcast station, first, the user rotates the tuning knob 9 in a predetermined direction while looking at the pointer 35.

Then, since the rotational force of this tuning knob 9 drives the tuning thread 45, this tuning thread 4
5, the pointer stand 31 moves along the longitudinal direction of the guide shaft 29. When the pointer stand 31 moves and the pointer 35 attached to it and the marker 13 for FM, among the markers 13 and 14, match each other, at that position, the operation switch 7 provided on the front panel 2 is pressed. , 8, press the FM operation switch 8. When the operation switch 8 is pressed, this pressing force causes the wire wire 48a of the remote control mechanism 48 to protrude forward, and the rotation arm 49 provided at the end of the wire 48a rotates in a predetermined direction. When the rotation arm 49 rotates, the guide shaft 29 also rotates in the same direction. In this way, when the guide shaft 29 rotates, the catch pestle 50 of the catcher part 46 is moved by the adjustment knob 9 by the above-mentioned operation of the tuning knob 9.
3, the tip of the catch village 50 is inserted into the through hole 15 of the marker 13. When inserted, the catcher part 46 and marker 13 are connected to each other, so while maintaining this state (while pressing the operation switch 8), turn the tuning knob 9 until the position of the desired receiving station is reached. Move the pointer 35. Pointer 3 to the desired receiving station position
Once 5 has been moved, the pressing force on the operation switch 8 is released. Then, the operation switch 8 self-returns to its original state due to spring force or the like, so the release wire 48a of the remote control mechanism 48 retreats toward the front panel 2 side.
When the release wire 48a retreats, the rotation arm 49 also returns to its original state. Therefore, the tip of the catch pestle 50 of the catcher section 46 comes out from the through hole 15 of the marker 13 and becomes uncoupled, while the marker 13 is placed at a position on the guide rail section 11 indicating the desired reception station. The marker 13 is installed, and the presetting of the marker 13 is completed. Other markers are also preset to the desired receiving station positions using the same operating procedure. As described above, presetting is performed using markers for desired broadcast stations. Next, after a plurality of broadcast stations have been preset as described above, to select the desired broadcast station, turn the tuning knob 9 while looking at the pointer 35 without pressing any of the operation switches 7 and 8. Rotate.

Then, a preset marker 1 for FM, for example.
Match the above-mentioned guideline 35 to one of 3. Guideline 3
5 matches one of the markers 13, at this point,
At a predetermined position of the code pattern 23 of the code plate 16,
Since the contact terminal 43 serving as a code detection means is located, the code signal programmed in advance in the code pattern 23 is detected by the contact terminal 43. Then, the lamp of the stereo indicator 51 provided on the front panel 2 lights up, and the desired broadcasting station is selected. As described above, the tuning device of the programmable synthesizer tuner is operated to preset and tune.

By the way, since the scale plate and the code plate used in such a channel selection device have completely different manufacturing processes, it is not possible to integrate the scale plate and the code plate as they are.

Therefore, during assembly, it is necessary to adjust the mutual positional relationship between the scale of the scale plate and the code pattern of the code plate to achieve as high accuracy as possible. In the present invention, in view of such points, as already mentioned above, the scale plate 4
The code plate 16 is arranged directly on the back of the scale plate 4 to improve the assembly work of the code plate 16, and the upper and lower guide rails 11 and 12 are integrated on the back of the scale plate 4 along its longitudinal direction. The mutual positional relationship between the scale 5 of the scale plate 4 and the code pattern 23 of the code plate 16 can be quickly adjusted by forming a protrusion on the scale and sliding the code plate 16 in the longitudinal direction of the guide rail parts 11 and 12 between them. I am trying to adjust it accordingly. Therefore, the code plate 16 and the scale plate 4 can be assembled and adjusted very easily and quickly, and the code plate 16 and the scale plate 4 can be assembled with high accuracy.
It is possible to integrate with Further, in the present invention, since the code plate 16 is directly disposed on the back of the scale plate 4, the entire device can be made compact, and the scale 5 of the scale plate 4 and the corresponding Since the code pattern 23 of the gourd plate 16 is located very close to the pointer 35, the contact terminal 4 that moves at the same time as the pointer 35
If the mutual position with 3 is adjusted accurately, highly accurate tuning can be obtained.

As described above, according to the present invention, the mutual positional relationship between the scale plate and the code plate can be aligned with high precision with a simple configuration. Further, in the present invention, since the code plate is directly disposed on the back of the scale plate, the entire device can be made compact, and the adjustment can be made very smoothly.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front view showing a synthesizer tuner with a program function incorporating the present invention, FIG. 2 is a side sectional view thereof, and FIG. Partially cutaway rear perspective view showing the synthesizer tuner, No. 4
The figure is an exploded perspective view showing the scale plate and pointer base (excluding the pointer) before the code plate is inserted, Figure 5 is a partially cutaway front view showing the code plate, and Figure 6 is a positioning pick-up. FIG. 3 is a partially cutaway front view showing a code plate fixed to a predetermined position of a scale plate. 4...Scale plate, 5...Scale, 11,1
2...Pair of guide rail parts, 16...Code plate, 23...Code pattern. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A pair of guide rails are integrally formed on the back surface of a long scale plate with a scale for displaying received frequency on its surface in the longitudinal direction at a predetermined interval, and the scale plate is A code plate having a code pattern programmed corresponding to the arrangement of the scale is stored and arranged on the back of the scale and between the guide rail parts, and the scale of the scale plate and the code pattern of the code plate are mutually arranged. A structure for aligning a scale plate and a code plate, characterized in that the alignment is made possible by sliding the code plate along the longitudinal direction of the guide rail portion. .