JPS584340Y2 - Push-button tuner pointer display mechanism - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pointer display mechanism in a push-button tuner, and in particular, patent application No. 127 filed in 1972 by the present applicant.
The present invention provides an extremely thin push-button tuner that is effective when used in applications such as No. 381, No. 127893, and No. 129854.

Reference numerals 1 and 1' denote a pair of transversely moving plates that are slidably inserted into holes 3, 3', 4, and 4' formed in a pair of opposing side plates 2 and 2', respectively.

Cam portions 6, 6' of the number corresponding to the push button members 5, which will be described later, are perforated in the front side portions of these horizontal movement plates, and the side plates 2
Ends 1a and lb projecting outwardly through holes 3 and 4.
Long grooves 7, 7' are bored parallel to the side plate 2 and perpendicular to the operating direction of the transverse plates 1, 1'.

Reference numeral 8 denotes a rotating member having a substantially T-shape, and each arm 8 a , 8 b , 8 C forming the substantially T-shape has a shaft 9 a , 9 b , 9 C protruding downward, and an arm 8 b . A shaft 9d is provided upwardly to protrude.

Reference numeral 10 denotes a shaft that passes through the joint of each arm of the rotating member 8 and is fixed integrally with the rotating member.

Reference numeral 11 denotes a core support plate having an arm 11a bent into an L-shape, and a core group 12 made of ferrite on the side surface.
is installed.

Reference numeral 13 is a variable inductance element housed in a U-shaped frame 14.

Reference numerals 15 and 15' denote a pair of guide shafts with one end fixed to the frame 14, and the core support plate 11 supported and guided by the guide shafts is slidable in the length direction of the guide shafts. In addition, the core group 12 attached to the side surface of the core group 12 can be freely retracted into a bobbin (not shown) around which a coil constituting the variable inductance element 13 is wound.

Reference numeral 5 designates a push button member having a push button 16 attached to its end, which includes a frequency regulating plate 18 rotatable about a shaft 17, and a restraining piece 19 for restraining and fixing the frequency regulating plate at a desired rotation angle.
It is composed of an actuating piece 20, etc., which is tilted using the cut-and-raised part 5a of the restraining piece as a fulcrum, and a plurality of actuating pieces are usually arranged in parallel in a push-button type tuner.

Reference numerals 21 and 21' denote a pair of dowels provided on the frequency regulating plate 18, which protrude at opposite positions with the shaft 17 in between.

In each member configured as described above, one dowel 21 of the pair of dowels provided on the frequency regulating plate 18 is attached to one of the 6 groups of cam portions formed on the other transverse movement plate 1, and the other The push button member 5 is attached to the pair of lateral moving plates 1' so that the dowel 21' corresponds to one of the cam portions 6' group formed on the other lateral moving plate 1'.
, a pair of front plates 22 and rear plates 2 facing each other on the lower side of 1′.
The rear plate 2 is inserted through the holes 22' and 23' drilled in the
The push button member 5 is mounted between the push button member 3 and the stepped portion 24 so as to be slidable in a direction perpendicular to the transverse movement plates 1 and 1' against a coil spring 25 wound around the push button member 5.

Further, the rotating member 8 has a shaft 9 provided below each arm.
a is in the long groove 7 of one of the lateral movement plates 1 of the pair of lateral movement plates,
The shaft 9b is engaged with the long groove 7' of the other lateral movement plate 1', and the shaft 9C is engaged with the elongated hole 11b formed in the arm 11a of the core support plate 11. Stand upright in between.

The core support plate 11 engaged with the inner shaft 9C is arranged so as to move orthogonally to the transverse movement plate.

In the variable inductance mechanism configured as described above, the push button member 5 equipped with the frequency regulating plate 18 fixed at a desired rotation angle is pushed forward against the coil spring 25 in order to reproduce a desired tuning frequency. When this is done, one of the pair of dowels 21 and 21' protruding from the frequency regulating plate 18 is connected to the corresponding cam part (6, 6') of one of the pair of horizontal movement plates 1 and 1'. one).

When the push button member 5 is further advanced and the dowel that is in contact with the cam part is slid along the cam surface, the horizontal movement plate is moved in the direction of arrow Y, and the dowel that is in contact with the cam part is moved in the direction of arrow Y. The shaft (9a, 9
(b) is the other transverse movement plate having a long groove that is displaceable in the length direction of the long groove and rotates the rotary member 8 about the shaft 10, and is bored with a long groove that is engaged with the remaining one shaft. is moved in the direction of arrow X (opposite direction to Y).

The movement of the pair of lateral movement plates 1.1' that move in opposite directions and the forward movement of the push button member 5 are caused by the cam portion of the other lateral movement plate left on the remaining dowel of the frequency regulating plate 18. The rotation angle of the frequency defining plate 18, which is stopped in contact with the frequency determining plate 18 and fixed at a desired rotation angle, is converted into displacement with a pair of transversely moving plates moving in opposite directions.

The displacement of the pair of transversely moving plates in opposite directions is caused by the rotation member 8.
The rotation of the rotating member 8 at that time is achieved through the core support plate 1 via a shaft 9C provided on the arm 8C.
1 are made to work together, and the core group 12 attached to the side surface of the core group 12 is moved into or out of the bobbin, thereby achieving variable inductance of the coil relative to the core.

In other words, as shown in FIG. 2, the rotation angle of the frequency regulating plate 18 is set arbitrarily, and the pair of transversely moving plates 1, 1' are attached to the pair of dowels 21 and 21' protruding from the frequency regulating plate. The cam parts 6 and 6' are made to correspond to each other, and the pair of transverse movement plates 1 and 1 are
By rotating and displacing the rotary member 8 which works together with ' to a desired rotation angle, the position of the core relative to the coil can be set to a desired position.

The above is the inductance variable mechanism by push button tuning of an extremely thin push button type tuner that was previously filed by the present applicant.

By the way, commercially available radio receivers require a mechanism to display the position of the core relative to the coil wound around the outer periphery of the bobbin, or in other words, the tuned frequency, and this is commonly called a pointer display mechanism. , for a scale plate (not shown) that displays the frequency attached to the front of the push-button tuner.
A pointer of a pointer display mechanism equipped on the push-button tuner is configured to give instructions.

The present invention relates to the pointer display mechanism of the above-mentioned push button type tuner,
The present invention provides a pointer display mechanism that is effective for use in the novel and extremely thin push-button tuner previously submitted by the present applicant.In particular, the pointer display mechanism is free from manufacturing and assembly errors. The purpose of this invention is to adjust the resulting error in the swing width reference point position of the pointer without changing the swing width of the pointer.

Examples of the present invention will be described below.

Reference numeral 26 denotes a top plate installed between the pair of side plates 2 and 2', and the top plate 26 has a substantially U-shaped notch 27 at the front end and a long hole 28 at the rear. Arm pieces 30 and 30' having a hole 29.29' bored in front of the arm 33.
33' further includes an irregular oblique hole 32.32' and a hole 31.31.
' is relatively drilled.

Reference numeral 34 is a pointer plate with a substantially T-shape, and its arms are 35° and 36°.
Holes 35a and 36a are bored in each arcuate tip of the arm 37, and a bendable support piece 37b, which is formed with a dowel 37a projecting downward, is provided in the tip of the arm 37 to project upward. Further, near the gathering portion of each arm 35, 36, 37, a bendable support piece 38b is provided to protrude upward, and a dowel 38a is formed to protrude toward the lower surface.

Reference numerals 39 and 39' are a pair of connecting rods, and holes 40 and 40' are provided near the center, and holes 41, 42, and 41' and 42' are bored at each tip of the connecting rods 39 and 39'. be done.

Reference numeral 43 is a swinging rod having a hole 44.45 bored at its tip, and a hole 44.45 of the swinging rod 43 has at least a half hole in the width direction near the middle of the hole 44.45. U-shaped notches 46 a , 46 b , 46 in which one or more grooves are formed
A plurality of C, 46d are cut and installed facing each other.

The members configured as described above are combined as follows.

First, the holes 35 a and 36 of the arms 35 and 36 of the pointer plate 34
Holes 41 and 41' of the connecting rods 39 and 39' are rotatably pivoted from above, respectively, and a hole 45 of a swinging rod 43 is pivotally connected to the hole 40 near the center of the connecting rod 39 from below. be done.

The pointer plate 34 combined as described above is disposed on the top plate 26 and the rotating member 8 as described below.

First, a bent support piece 37b of an arm 37 is slidably engaged with the substantially U-shaped notch 27 of the top plate 26, and a bent support piece 38b is slidably engaged with the elongated hole 28 of the top plate 26. Furthermore, the top plate 26
Hole 29.29' is connected to hole 42.42 of connecting rod 39.39'.
' is rotatably pivoted from the bottom direction, and one connecting rod 39
The swinging rod 43 pivotally attached to the 7L 40 is inserted into the hole 29 of the side plate, and is rotatably fitted and fixed to the shaft 9d protruding from the arm 8b of the rotating member 8, and the other connecting rod 39' hole 40'
A coil spring 31 a is installed between the hole 31 ′ of the top plate 26 and the hole 31 ′ of the top plate 26 .

In the pointer mechanism combined as described above, when the pair of lateral moving plates 1 and 1' move laterally by pressing the push button member 5 or rotating the manual tuning mechanism (not shown), the rotating member A link mechanism consisting of a swinging rod 43, a pair of connecting rods 39, 39', and the pointer plate 34 allows the pointer 37C fixed to the tip of the pointer plate 34 to move horizontally and linearly. , the pointer 3 attached to the pointer plate 34 with respect to the scale plate displaying the frequency attached to the front of the push-button tuner.
7 It is constructed and operates as directed by C.

In the pointer display mechanism constructed and operated as described above, the operation for adjusting the relative variation between the indicated position of the pointer 37C with respect to the scale plate displaying the reception position and frequency will be explained.

First, after adjusting the receiving position as desired,
When a screwdriver or the like is inserted into the groove 30a of FIG. As shown, by displacing the support point of the connecting rod 39, the pointer 37
The swing width reference point position of C can be adjusted, and the groove 30
If the same operation is performed in the right direction within b, the pointer 37C can be adjusted in the direction opposite to the swing width base position, as shown in the opening in Figure 5, and the grooves 30C and 30d of the arm piece 30' The same effects as described above can also be achieved.

Further, other embodiments of the pointer display mechanism constructed as described above will be described.

First, insert a screwdriver or the like into the U-shaped notch 46b, which has a notch that is at least half the width of the swinging rod 43, and rotate it to the left or right. The notch portion 46b is adjusted to have a wide width with the vicinity of the bottom as a base point,
At the same time, the U-shaped notches 46a and 46C are adjusted to be narrower, and the distance between the supporting points of the holes 44 and 45 of the swinging rod 43 is displaced as shown in FIG. 6A, thereby adjusting the swing width reference point position of the pointer 37C. Furthermore, by performing the same operation as described above inside the U-shaped notch 46C, it is possible to adjust the pointer 37C in the direction opposite to the swinging width reference point position, as shown in Figure 6.

As described above, the pointer display mechanism of the present invention that indicates the tuning frequency can be adopted in an extremely flat and thin push-button type tuner, is easy to operate, and is easy to operate, and moreover, the pointer display mechanism of the present invention that indicates the tuning frequency can be easily operated. Since the position adjustment is easy and accurate, the horizontal movement plate 1
, 1', and the position of the inductance variable mechanism can be accurately set via the rotating member 8, thus providing a novel pointer display mechanism (which has never existed before).

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main part of the push-button tuner according to the present invention, Fig. 2 is a perspective view of the main part, Fig. 3 is a perspective view of the pointer structure with links, and Fig. 4 is a top plate. A partially cutaway plan view, FIG. 5 is a diagram showing an example of the operation for adjusting the swinging width reference point position of the pointer, and FIG. 6 is a diagram showing another example of the operation for adjusting the swinging width reference point position of the pointer. , 1.1' is the horizontal movement plate, 2,2' are the side plates, and 5
8 is a push button member, 8 is a rotating member, 26 is a top plate, 34 is a pointer plate, 39° 39' is a connecting rod, and 43 is a swinging rod.

Claims (2)

[Scope of utility model registration request] (1) When the pair of lateral moving plates 1 and 1' move laterally due to the pressing operation of the push button member 5 or the rotating operation of the manual tuning mechanism, the swinging rod 43 and the pair of connecting rods are moved through the rotating member 8. 39, 39
By means of a link mechanism consisting of a pointer plate 34 and a pointer plate 34, a pointer 37C fixed to the tip of the pointer plate 34 moves horizontally and linearly. The pointer 3 fixed to the pointer plate 34 is attached to the plate.
7. A push button which is provided with grooves 30a and 30b that allow at least one of the arm pieces 30 and 30', to which a pair of connecting rods 39 and 39' are pivotally attached, to be displaced leftward or rightward. Pointer display mechanism for formula tuner. (2) Swinging rod 43 and a pair of connecting rods 39 via rotating member 8
, 39' and the pointer plate 34, the link mechanism allows
In the pointer display mechanism as set forth in claim 1 of the utility model registration claim, the pointer 37C fixed to the pointer plate 34 indicates a frequency displaying scale plate mounted on the front surface of the tuner. A plurality of (7) U-shaped notches 46 a , 46 b , 46 C, and 46 d are cut out oppositely in the swinging rod 43 to which the rotating member 8 is pivotally connected on one side and the connecting rod 39 on the other side. Comfortable composition.