JPH0328602Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a push-button tuner particularly suitable for use in vehicles.

BACKGROUND ART Conventionally, an operating member has a drive gear provided on a shaft having a push button at one end, and a tuning piece is screwed into a screw portion provided on the shaft so as to be movable back and forth, and meshes with the drive gear. and a tuning member having a driven gear,
For example, as a push-button tuner in which at least one tuning member corresponds to one operation member,
No. 33647, JP-A-60-85617, JP-A-60-100816
There are some things described in each bulletin of the issue.

That is, a push-button tuner having a similar shape to the push-button tuner described in Japanese Patent Application Laid-Open No. 60-85617 will be described as a conventional example.

FIG. 6 is a partially omitted plan view, in which 1 is an operating member consisting of a shaft 4 having a push button 2 at one end and a main drive gear 3 in the middle, and 5a and 5b are assembled with the operating member 1. This is a channel selection member constituting a channel selection device, which includes a shaft rod 6, a threaded portion 7, and a tuning piece 8 that is screwed into the threaded portion 7 and moves in the axial direction as the shaft rod 6 rotates. , comprising a driven gear 9 and a guide piece 10 that fits into the shaft rod 6 so as to sandwich the threaded part 7 and is fixed in the axial direction by a retaining ring 11,
The operating member 1 and the channel selection members 5a and 5b are connected to the device frame 1.
Spring 13, 1 is attached to the front and rear plates 12a, 12b of 2, respectively, so as to be rotatable and movable back and forth, and in an inactive state.
4 so as to be in pressure contact with the rear plate 12b of the container frame. Between the operating member 1 and the two left and right channel selection members 5a, 5b, there is provided a channel selection member 5a, 5b that is automatically switched each time the operating member 1 moves forward against the spring 13, and alternates with the channel selection members 5a, 5b. A switching mechanism 15 that engages in the forward direction is provided, and a plurality of channel selection devices configured in this manner are installed in the device frame 12.

Further, on the device frame 12, there is a lock plate 16 that locks the tuning member moving forward in cooperation with the operating member 1 in its forward movement state, and a tuning piece 8 of the tuning member locked in the forward movement state. A sliding rod 18 that is integral with the sliding plate 17 that is in press contact and guides the sliding plate 17 so as to be able to move back and forth, a variable tuning section 19 that supports a variable element 19a on the sliding plate 17, and a sliding rod 18 that slides around the sliding rod 18. A guide rod 20 is provided for regulating the tilting of the plate 17 and for guiding the sliding movement of the slide plate 17. Reference numeral 21 denotes a spring that urges the slide plate 17 and the sliding rod 18 toward the front, and presses the slide plate 17 against the channel selection piece 8.

As shown in FIG. 9, the lock plate 16 is movable laterally in a direction perpendicular to the operating member 1 and is always elastically biased in one direction by a spring 22. 1, when the guide member 10 is attached to the guide member 10, the lock plate 16 is moved laterally against the spring 22 by acting on the locking piece 23 projecting downward from the front piece of the guide member 10 attached thereto.
A locking portion 24 is formed to maintain the forward movement state of the channel selection member. In addition, a guide groove 25 that engages with the locking piece 24 and guides its forward and backward movement is provided on the bottom plate 12c of the container frame, facing each channel selection member 1.

Note that 26 is a cover attached to the tuner with screws 27.

Thus, from the non-tuning state where the operating member 1 and the channel selection members 5a and 5b are urged by the springs 13 and 14 and are in pressure contact with the rear panel 12b, the push button 2 is pressed to move the operating member 1 forward. Then, one of the channel selection members engaged through the switching mechanism 15 also moves forward and is locked by the lock plate 16, and the channel selection piece 8 comes into pressure contact with the slide plate 17 to achieve channel selection. This is the same as before.

Problems to be Solved by the Invention In order to assemble the push-button tuner described above, first, the lock plate 16 is provided on the bottom plate 12c so as to be movable laterally, the operating member 1 to which only the switching mechanism 15 is attached, and the tuning piece are assembled. 8,
The channel selection members 5a, 5b provided with the driven gear 9 are passed through holes 28, 29 formed in the rear plate 12b, and the main drive gear 3 is attached to the tip of the operating member 1.
A spring 14 is inserted through each part b. after that,
Holes 30 and 31 formed in the front plate 12a are passed through the tips of the operating member 1 and the channel selection members 5a and 5b, and the front plate 12a is attached to the bottom plate 12c with screws 32. Next, the sliding rod 18 integrated with the sliding plate 17
The variable tuning part 19 is attached to the front plate 12a with screws 34 after passing through a hole 33 bored in the rear plate 12b at one end and a hole 36 of the variable tuning part 19 at the other end. Finally, attach the guide rod 20 to the front and rear plates 12.
a, 12b and the slide plate 17, and is attached to the container frame 12 with a retaining ring 35.

By the way, this type of push-button tuner has a tuning member 5.
a, 5b and the slide plate 17 are the springs 14, 2
1, if smooth repeating is not performed, the reproducibility during channel selection will be poor, causing a decrease in the precision of channel selection.

Therefore, the attachment position of the front plate 12a to the bottom plate 12c is adjusted to enable smooth return of the channel selection members 5a, 5b and the sliding rod 18 integrated with the slide plate 17.

However, due to variations in the machining accuracy of parts, this could not be done satisfactorily. especially,
Since the channel selection members 5a, 5b and the sliding rod 18 are provided on the common rear plate 12b, it is particularly difficult to adjust the mounting position.

Therefore, the present invention solves the above-mentioned problems and improves the accuracy of channel selection.

Embodiments Hereinafter, the present invention will be explained based on the embodiments shown in FIGS. 1 to 5.

The feature of this invention is that the container frame 12 is connected to the main body 40 and the top plate 41.
It is composed of

That is, the main body 40 is constructed by attaching the front plate 12a to the bottom plate 12c with screws 42, and the tuning mechanism A consisting of the aforementioned operating member 1, the tuning members 5a and 5b, and the lock plate 16 can be moved back and forth or It is installed so that it can move laterally.

The top plate 41 has an attachment part 43 attached to the rear plate 12b of the main body 40, support pieces 44 attached to both front corners of the bottom plate 12c, and a guide piece 46 having a slit 45 that serves the same role as the guide rod 20 described above. It has a variable tuning part 19, a sliding rod 18 supported by the variable tuning part 19 and the mounting part 43 so as to be movable back and forth, and a protruding piece 47 that engages with the slit 45. A tuning mechanism B consisting of a slide plate 17 is provided. An index mechanism C is provided on the top surface.

In this way, the main body 40 provided with the channel selection mechanism A
The top plate 41 provided with the tuning mechanism B is attached to the mounting portion 4.
3 and the support piece 44 are integrated with screws 48, 48'.

Therefore, before integrating the main body 40 and the top plate 41, the tuning mechanism A and the tuning mechanism B can be individually slid and adjusted, and integration can be accomplished by simply connecting them to each other. There is no need to slide the members of each mechanism into a common part of the container frame, and the adjusted smooth sliding is not impaired.

Furthermore, since the guide rod 20 was conventionally installed at the final stage of assembly, if there was an error in the relative position between the container frame 12 and the slide plate 17, the slide plate 17 could not slide smoothly. However, in this case, the protrusion 47 protruding from the end of the slide plate 17 is engaged with the slit 45 of the top plate 41 and plays the same role as the guide rod 20.
Sliding guidance is possible regardless of the relative position with respect to the sliding guide, and the smoothness of the sliding movement is not impaired.

Furthermore, when the top plate 41 is provided with a pointer mechanism C that interlocks with the slide plate 17 through the elongated hole 49 and the pin 50, the movement of the pointer mechanism C can be adjusted at the same time as the slide plate 17.

Although the support piece 44 is provided on the top plate 41, it may also be provided on the variable tuning section 19.

Effects of the invention As described above, in this invention, the device frame is separated into the main body and the top plate, and a tuning mechanism and a tuning mechanism are provided for each, unlike when they are installed in a common device frame. , high channel selection accuracy can be guaranteed without impairing smooth sliding during assembly.

[Brief explanation of drawings]

Figures 1 to 5 are examples of the present invention, Figures 6 to 9 are conventional examples, Figure 1 is the overall plan view, Figure 2 is the right side of Figure 1, and Figure 3 is the second view. Fig. 4 is a plan view of the top plate, Fig. 5 is a plan view of the main body, Fig. 6 is an overall plan view, and Fig. 7 is a diagram of the container frame separated into the main body and top plate.
The figures are a cross-sectional view taken from FIG. 6, FIG. 8 is a cross-sectional view taken from FIG. 6, and FIG. 9 is a plan view of the lock plate. In the figure, A is the tuning mechanism, B is the tuning mechanism, C is the pointer mechanism, 1 is the operating member, 2 is the push button, 3 is the main drive gear, 4 is the shaft, 5a and 5b are the tuning members, and 6 is the Axial rod, 7 is threaded part, 8 is tuning piece, 9 is driven gear, 1
5 is a switching mechanism, 12 is a container frame, 16 is a lock plate, 1
7 is a sliding plate, 18 is a sliding rod, 20 is a guide rod,
19 is a variable tuning section, 40 is a main body, 41 is a top plate, 4
3 is a mounting part, 44 is a support piece, 45 is a slit, 4
6 is a guide piece, and 47 is a protruding piece.

Claims (1)

[Scope of utility model registration request] The operating member has a driving gear provided on a shaft having a push button at one end, a tuning piece is screwed into a screw portion provided on the shaft so as to be freely forward and backward, and a driven gear meshes with the driving gear. A tuning mechanism body consisting of a station member, a lock plate that maintains the forward movement state of one tuning member and releases the forward movement state of the other tuning member, and a locking plate that is slidably guided by a sliding rod and moves back and forth. In a push-button tuner in which the instrument frame is equipped with a tuning mechanism body formed by connecting a variable tuning element to a sliding part that connects the tuning mechanism, the instrument frame is separated into a main body and a top plate, and the tuning mechanism body is attached to the main body. , a push-button type tuner characterized in that each top plate is equipped with a tuning mechanism.