JPS584341Y2 - Push-button tuner pointer attachment mechanism - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pointer attachment mechanism in a push-button tuner, and in particular, the present invention relates to patent application No. 1273 filed in 1973 by the present applicant.
No. 81, No. 127893, No. 128402, No. 12
The purpose is to provide an extremely thin push-button type tuner that is effective when used in No. 9854, etc., and in particular, it is a mechanism that requires complicated assembly work such as conventional rivet caulking for connecting each component. The present invention provides a push button type tuner which is easy to use and inexpensive.

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 parts 6, 6' are formed on the front sides of these horizontal movement plates, the number of which corresponds to the push button members 5, which will be described later, and which protrude outward from the side plate 2 through holes 3 and 4. Ends 1a, l
Long grooves 7, 7' are bored in b so as to be parallel to the side plate 2 and perpendicular to the operating direction of the transverse plates 1, 1'.

Reference numeral 8 denotes a substantially T-shaped rotating member, and each arm 8 a , 8 b , 8 C forming the substantially T-shape has shafts 9 a , 9 downward.
b, 9C are provided in a protruding manner, and furthermore, a shaft 9d is provided in an upwardly protruding manner on the arm 8b.

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 group of cores 12 held by ferrite on the sides.
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. The core group 12 attached to the side surface of the core group 12 can be freely moved into and out of 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' designate 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 of the dowels 21 of the pair of dowels provided on the frequency regulating plate 18 is connected to one side of the horizontal movement plate 1.
A dowel 21 is attached to one of the 6 groups of cam portions formed on the other side.
The push button member 5 is connected to the pair of horizontally moving plates 1, 1' so that ' corresponds to one of the cam portions 6' group formed on the other horizontally moving plate 1'.
The push button member 5 is fitted into holes 22' and 23' formed in a pair of opposing front and rear plates 22 and 23 on the lower side of the button, and is wound around the push button member 5 between the rear plate 23 and the stepped portion 24. It is mounted so as to be slidable in a direction perpendicular to the transverse movement plates 1, 1' against a coil spring 25.

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 shaft 9C is arranged so as to move orthogonally to the transverse movement plate.

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

When the push button member 5 is further advanced and the dowel in contact with the cam part is slid along the cam surface, the transverse movement plate is moved in the direction of arrow Y and the long groove (7 , 7') is displaced in the length direction of the long groove and rotates the rotating member 8 about the shaft 10, and The other transverse movement plate, which has a long groove that is engaged with, is moved in the direction of arrow X (opposite to the direction of arrow Y).

The movement of the pair of transverse plates 1 and 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 transverse plate remaining in the other dowel of the frequency regulating plate 18. The rotation angle of the frequency regulating plate 18, which is stopped in a state where the two are in contact with each other, and which is restrained and fixed at a desired rotation angle, is converted into the displacement of a pair of transversely moving plates that move in opposite directions.

The displacement of the pair of transversely moving plates in opposite directions is achieved via the rotating member 8, and at that time, the rotating member 8
The rotation of the core support plate 11 is made to work together through the shaft 9C provided on the arm 8C, and the core group 12 attached to the side surface of the core support plate 11 is rotated.
The inductance of the coil relative to the core can be varied by moving the coil into or out of the bobbin.

In other words, as shown in FIG. 2, the rotation angle of the frequency regulating plate 18 is set arbitrarily, and a pair of lateral movement plates 1, 1' are attached to a pair of dowels 21, 21' protruding from the frequency regulating plate 18. The parts 6 and 6' are made to correspond to each other, and the pair of transverse movement plates 1 and 1 are made to correspond to each other.
By rotationally 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 with respect to the coil wound around the outer periphery of the bobbin, or in other words, the tuned frequency, and this is commonly known as a pointer display mechanism. The pointer of the pointer display mechanism equipped on the push-button tuner indicates the frequency to a scale plate (not shown) attached to the front of the push-button tuner.

The present invention relates to the pointer display mechanism of the above-mentioned push button type tuner,
The present invention provides an effective pointer display mechanism for use with the novel, 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 according to the present invention will be described below.

Reference numeral 26 indicates a top plate mounted on the pair of side plates 2, 2', and the top plate has a substantially U-shaped notch 27 at the front end and a long hole 28 at the rear. The arcuate holes 33, 33' are centered around the dowels 29, 29' (or shafts) protruding downward in the front direction of the dowels 26, and the irregularly shaped oblique holes 32, 32' and 7L are formed.
31 and 31' are bored relative to each other.

In addition, near the dowel 29.29' (or shaft), there is a rotation instruction range (in other words, The rotation of the rotating member 8 causes the core support plate 11 to work together through the shaft 9C provided on the arm 8C, and causes the core group 12 attached to the side surface of the plate to be moved into or out of the bobbin. At least one bent support arm 30, 30' for rotatably fitting and supporting a connecting rod 39, 39', which will be described later, is provided by cutting out and protruding from the top plate 26 outside the rotation angle of the inductance (to achieve variable inductance). or fixed to the top plate 26 integrally.

Further, the distance between the head of the dowel 29, 29' (or shaft) and the inner side of the bending support arm 30, 30' is the same as that of the continuous rod 39, 39'.
It is configured to be smaller than the plate thickness of , and is configured to prevent the connecting rods 39, 39' from deviating from the dowels 29, 29' (or shafts).

Reference numeral 34 is a pointer plate with a substantially T-shape, and its arms are 35° and 36°.
And each tip has a cylindrical hollow shaft 3 by burring process.
5a, 36a (or fixed shafts) are provided protruding toward the upper surface, and furthermore, in the vicinity of the hollow shafts 35a, 36a (or fixed shafts), the rotation shafts about the hollow shafts (or shafts) are provided. Connecting rods 39.39', which will be described later, are outside the rotation angle of the indicated range.
Bent support arms 35b, 36 that rotatably fit into and support the
At least one point b is integrally fixed to the pointer plate 34 in the upper surface direction, or is provided by cutting and raising the pointer plate 34 in a protruding manner.

Further, at the tip of the arm 37, a bending support piece 37b, which is formed so that a dowel 37a (or shaft) protrudes from the lower surface, is provided to protrude upward, and furthermore, near the convergence part of each arm 35° 36.37. A bendable support piece 38b having a dowel 38a protruding downward is provided to protrude upward.

Reference numerals 39 and 39' indicate a pair of continuous rods, and a cylindrical hollow shaft 40 and 40' (or a fixed shaft) is provided near the center by burring to protrude toward the lower surface, and the hollow shaft (or A hollow shaft 40°40' (fixed shaft) is located near the
At least one bending support arm 39a, 39b that supports the swinging rod 43 by rotatably fitting the swinging rod 43 at a rotation angle outside the specified rotation range about a fixed shaft) is connected to at least one rod 39, 39' in the downward direction. whether it is fixed integrally to the connecting rod 39, 39'
It is cut and raised to protrude.

Also, holes 41, 42, and holes 41', 42' are bored at each end of the connecting rod 39, 39', and each end is formed by a dowel 29, 29' (or shaft) protruding from the top plate 26. ) is connected to 39,
Engagement notch grooves 39C, 39d, 39e into which 39' is fitted and supported without deviating from the rotation instruction range.
, 39 f are deleted.

Reference numeral 43 is a swinging rod with holes 44 and 45 bored at its tip, and a hollow shaft 40 (or a fixed shaft) protruding from the connecting rod 39 is attached to the tip of the hole 45. Engagement support groove 45 that is inserted and supported without deviating from the motion instruction range
U-shaped notches 46 a , 46 b , in which U-shaped notches 46 a , 46 b , in which grooves of at least one half or more are formed in the width direction of the swing rod 43 near the middle of the holes 44 and 45 of the swing rod 43
A plurality of 46C and 46d are cut and installed facing each other.

Note that the distance between the head of the hollow shaft 40, 40' (or fixed shaft) and the inner side of the bending support arms 39a, 39b is configured to be smaller than the plate thickness of the swinging rod 43, so that the swinging This configuration prevents the rod 43 from deviating from the hollow shaft 40, 40' (or a fixed shaft).

The members configured as described above are assembled as follows.

First, the hollow shafts 35 a and 3 of the arms 35 and 36 of the pointer plate 34
The engagement notches 39c, 39e of the bending support arms 35b, 36b and the connecting rod 39.39' are fitted into the connecting rod 39.39' (7) into 6a (or the fixed shaft) from the upper surface direction.
A hole 41.41' is rotatably installed, and a hollow shaft 40.40' (or a fixed shaft) near the center of the connecting rod 39 is provided with the bending support arm 39a and the swinging rod 43 from below. The engagement notch groove 45a is fitted into the hole 45 of the swinging rod 43 so as to be rotatable.

The pointer plate 34 assembled as described above is attached to the top plate 26 as shown below.
and are arranged on the rotating member 8.

First, the bending support piece 37b of the arm 37 is slidably fitted into the substantially U-shaped notch 27 of the top plate 26, and the bending support piece 38b is slidably fitted into the elongated hole 28 of the top plate 26. The dowels 29, 29' (or shafts) of the plate 26 are provided with engagement notch grooves 3 for the bending support arms 30, 30' and the connecting rods 39, 39' from the bottom direction.
9 d and 39 f are inserted into the holes 4 of the continuous rods 39 and 39'.
2.42' is rotatably attached, and the swinging rod 43, which is similarly attached to the hollow shaft 40 (or a fixed shaft) of one of the connecting rods 39, is inserted into the hole 29 of the side plate 2, and the swinging rod 43 is inserted into the hole 29 of the side plate 2, Part 8
A coil spring 31a is rotatably attached to a shaft 9d protruding from the arm 8b of the arm 8b, and a coil spring 31a is connected to a hollow shaft 40' (or a fixed shaft) of the other connecting rod 39' and a hole 31' of the top plate 26. It will be erected.

When the pointer mechanism combined as described above moves laterally by pressing the push button member 5 or rotating the manual tuning adjustment 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. , a pointer 37 attached to the pointer plate 34 with respect to a scale plate displaying the frequency attached to the front of the push-button tuner.
It is configured and operates as directed by C.

Note that a U-shaped notch 46 is cut out to face the swinging rod 43.
a, 46 b, 46 C, 46 d are pointer 37 C
This is a notch cut to adjust the swing width reference point position.

As described above, the pointer mechanism of the present invention that displays the tuning frequency is extremely flat and is adopted in a thin push-button tuner. The present invention provides a pointer display mechanism that is extremely easy to operate and has a novelty that has not been seen before.

[Brief Description of the Drawings] Fig. 1 is a perspective view of the main parts of a push-button tuner according to the present invention;
Figure 2 is a perspective view of the main parts of the push-button tuner according to the present invention;
The figure is an AA' cross-sectional view of the top plate in Figure 1, Figure 4 is an enlarged partially cutaway plan view and side view of the pointer plate in Figure 1, and Figure 5 is the same view as in Figure 1. 6 is an enlarged partially cutaway plan view and side view of the swinging rod in FIG. 1, and FIG. 7 is an enlarged plan view and side view of the connecting rod in FIG. FIG. 8 is a diagram showing how to attach the top plate and the connecting rod. In the figure, 1.1' is a horizontal movement plate, 2, 2' are 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 adjustment mechanism, the swinging rod 43 and the pair of connecting rods 39 are moved through the rotating member 8. .39'
By means of a link mechanism consisting of the pointer plate 34 and the pointer plate 34, the pointer 37C, which is fixed to the tip of the pointer plate 34, moves in a straight line with free horizontal movement, and the pointer 37C moves horizontally and linearly to the scale plate mounted on the front of the tuner that displays the frequency. On the other hand, the pointer 37 fixed to the pointer plate 34
In the pointer mechanism of a push-button tuner directed by C,
A dowel 29°29' (or shaft) is provided protruding from the top plate 26, and a hole 42.42' drilled at the end of the connecting rod 39.39' is fitted into the dowel (or shaft). , 39' is dowel 2
9, 29' (or axis), and the connecting rods 39, 39' are configured to be rotatable around the dowels 29, 29' (or axis).
A mechanism with protruding bendable support arms 30, 30' that further prevents falling off. (2) Dowels 29, 29' (or shaft) protruding from the top plate 26
When inserting the connecting rods 39 and 39' into the bent support arms 30 and 30', the bending support arms 30 and
, 30', the pointer mechanism according to claim 1 is provided with engaging notch grooves 39d and 39f.