JPS6224985Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pointer mechanism in a push-button tuner.

Conventionally, in a push-button tuner, a push-button arm, a memory slide interlocking with a tuning core, a change plate for changing bands of the tuner, and the like are provided on a substrate provided at the bottom of the tuner. An upper plate was fixed above these armrests in parallel with the base plate, and the pointer mechanism of the tuner was disposed on the upper plate. That is,
On the board of the push button tuner, pins, protrusions, and other parts for guiding the push button arms, memory slides, etc. protrude, and members such as links that make up the pointer mechanism are attached to these protruding parts. In order to prevent the pointer from getting caught, an upper plate was interposed between each member provided on the board and the pointer mechanism. The pointer mechanism is supported by various pins or guide grooves provided on this upper plate, and in conjunction with the memory slide at the bottom of the upper plate, the pointers supported by these members move to the upper plate. It was configured to move on a plate.

However, interposing the upper plate between each member on the board and the pointer mechanism increases the thickness of the entire tuner, which has recently been strongly desired for compact push-button tuners.
This was a major obstacle in making the device thinner.

In addition, in order to provide an upper plate in addition to the board, after each member is assembled to the board, the upper plate must be fixed to the board so as to cover the upper part, and the pointer mechanism must be attached on top of it. However, there was also the drawback that the assembly work of the tuning shaft became extremely complicated. Furthermore, if the board and upper plate are separated and the pointer mechanism is provided separately from each member on the board, pins and guides for supporting the pointer mechanism may be provided on the board. However, the number of parts used exclusively for the upper plate increases, which increases the number of parts for the entire tuner.

The present invention was proposed to solve these drawbacks of the conventional type, and its purpose is to reduce the number of parts and make the push button tuner smaller and thinner by eliminating the need for an upper plate. The object of the present invention is to provide a pointer mechanism that can achieve the following.

Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

A kick arm 1, a memory slide 2, and a change plate 3 are provided on the substrate of the push-button tuner so as to be movable in the width direction of the push-button tuner.

That is, the kick arm 1 is a member that moves as the push button is pressed and disconnects the clutch connected thereto, and a guide pin 4 and a spindle pin 5 are provided at both ends of the kick arm 1 so as to sandwich the kick arm 1 therebetween. The kick arm 1 is guided by these guide pins 4 and spindle pins 5 to move laterally along the base plate.

The memory slide 2 moves as the push button is pressed, and is used to determine the insertion position of the core connected to the memory slide 2 into the tuning coil.
A pair of left and right guide holes 6 are bored in the memory slide 2, and a guide pin 7 fixed to the board side is slidably inserted into the guide hole 6.
Guided by these guide pins 7 and guide holes 6, the memory slide 2 also moves in the width direction of the push button tuner.

The change plate 3 is provided parallel to the rear of the memory slide 2, and moves as the push button tuner is pressed, and changes the band changeover switch connected to it to change the receive band of the push button tuner to the AM side, for example. This is to switch from the FM side to the FM side. This change plate 3 has a pair of left and right guide holes 8.
A guide pin 9 fixed to the board of the push button tuner is inserted into the guide hole 8, and the change plate 3 is guided by the guide hole 8 and the guide pin 9 so as to move horizontally on the board. move in the direction.

A pointer plate 10 is movably disposed above the kick arm 1, memory slide 2, and change plate 3. The pointer plate 10 has a T-shape as a whole, and the tip of the vertical piece of the T-shape projects in front of the tuner, and a pointer is connected to this projecting end. On the other hand, the pointer plate 10
Both ends of the horizontal piece are rotatably supported by left and right links 11 and 12. That is, the base ends of the left and right links 11, 12 are rotatably attached to the tips of the left and right spindle pins 5, 5 fixed on the board. A pointer plate 10 is rotatably supported.

On the lower surface of the pin 13 provided at the connecting portion between the pointer plate 10 and the left and right links 11 and 12,
A seat 14 is provided as shown in the enlarged view of FIG. The lower surface of this seat 14 is slidably in contact with the memory slide 2 or the upper surface of the change plate 3, and is supported so that the pointer plate 10 and links 11, 12 do not come into contact with the memory slide 2 or change plate 3. ing. That is, the wall thickness T1 of the seat 14 is larger than the protrusion amount T2 of the members protruding from the upper surface of the memory slide 2 and change plate 3, such as the guide pins 7 and 9. Therefore, as described above, the pointer plate 10
A gap is formed between the links 11 and 12 and the surfaces of the memory slide 2 and change plate 3 located below them, to prevent the pointer plate 10 etc. from getting caught by other members below when moving. It is designed so that there is no such thing.

In this case, when the guide pins 7 and 9 that support the memory slide 2 and the change plate 3 are outside the movement range of the pointer plate 10 and the links 11 and 12, the amount of protrusion of these guide pins 7 and the pointer plate 10 is It may be larger than the wall thickness of the seat 14 of the pin 13. However, even in that case, if there is a protrusion from the surface of the memory slide 2 or change plate 3 within the movement range of the pointer plate 10 or links 11, 12, the protrusion amount T2 of the protrusion It is necessary to set the wall thickness T1 of 14 to be large.

By the way, the pointer plate 10 moves in conjunction with the memory slide 2, and a V-shaped link 15 is attached between the left link 11 supporting the pointer plate 10 and the end of the memory slide 2. It is being That is, this V-shaped link 15 includes a pointer-side link 16 rotatably connected to approximately the center of the left link 11, and a memory slide-side link 17 rotatably connected to the pointer-side link 16. It is composed of. The memory slide side link 17 is rotatably attached to a support shaft 18 fixed on the board at approximately the center thereof, and furthermore, this memory slide side link 1
A guide groove 19 is formed at the tip of 7, and this 1
A pin 20 protruding from the end of the memory slide 2 is slidably fitted into the pin 9.

The pointer mechanism of the present invention has the above-mentioned configuration, and its operation will be explained next.

When the memory slide 2 moves, for example, to the right in the figure as the push button is pressed or the tuning knob is rotated, the memory slide 2 engages with the pin 20 provided at the end of the memory slide 2 via the guide groove 19. The memory slide side link 17 rotates counterclockwise about its support shaft 18.
Then, the pointer side link 16 moves to the left side being pulled by the memory slide side link 17, and as a result, the left link 11 of the pointer plate 10 connected to this pointer side link 16 moves toward the spindle pin 5. Move to the left centering on . As a result, the pointer plate 10 supported by the left link 11 and the right link 12 also moves to the left, and the pointer provided at its tip displays a predetermined frequency.

In addition, when the memory slide 2 moves to the left side contrary to the above, the V-shaped link 15 and the left link 11 connected thereto also move to the opposite side, and as a result, the left and right links 11, 12 The pointer plate 10 supported by moves to the right in the figure.

By the way, when the pointer plate 10 is moved in this way, the seat 14 of the pin 13 provided at the ends of the left and right links 11 and 12 comes into slidable contact with the upper surface of the memory slide 2 or the change plate 3. Therefore, the pointer plate 10 and links 11, 12 are supported from below. Therefore, the pointer plate 10 and the links 11, 12 can move smoothly without coming into contact with the memory slide 2 or other protrusions from the board.

As shown in the above embodiments, the pointer mechanism of the present invention has a seat 14 formed on the pin 13 provided at the tip of the links 11 and 12 that support the pointer plate 10, and the seat 14 allows the pointer plate 10 and the links 10 to , 12 are supported in a floating state from the surface of the memory slide 2 and the change plate 3, so the pointer plate 1
0 and the links 11 and 12 come into contact with other members provided on the board during their movement, thereby completely eliminating the possibility that their movement will be hindered. As a result, according to the present invention, the presence of the upper plate, which was conventionally considered indispensable, is no longer necessary, so that the thickness of the push button tuner can be reduced accordingly. Furthermore, with the removal of the upper plate, the number of parts of the entire tuner is reduced, and the supporting member of the pointer provided on the board, for example, the pivot pin, can be shared with the guide pin of other members. This has the effect of reducing the number of parts due to common use, compared to the conventional case where the pointer mechanism was provided separately.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of a pointer mechanism of a push-button tuner according to the present invention, and FIG. 2 is an enlarged sectional view showing a connecting portion between the pointer plate and the link. 1...Kick arm, 2...Memory slide, 3...Change plate, 4...Guide pin, 5...Spindle pin, 6...Guide hole, 7...Guide pin, 8...Guide hole, 9... …guide pin,
10... pointer plate, 11, 12... link, 13...
...Pin, 14...Seat, 15...V-shaped link, 1
6... Pointer side link, 17... Memory slide side link, 18... Support shaft, 19... Guide groove, 2
0...Pin.

Claims (1)

[Scope of utility model registration request] Without providing an upper plate on the board of the push button tuner, a pointer plate and a link for moving the same are provided via a support member provided on this board, and the pointer plate is connected to the link. A feature is that the seat provided at the bottom of the pin is slidably in contact with the surface of another member arranged on the board, and a gap is formed between the other member and the pointer plate and link. The pointer mechanism of the push button tuner.