JPH0635547Y2 - Tuning device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel selecting means for setting an operating channel, and more particularly to a channel selecting device for a portable transceiver.

[0002]

2. Description of the Related Art In a conventional portable transceiver, the transmission / reception frequency is, for example, 144.00 MHz to 14 MHz.
Assuming used in the range of 5.99MHz, if dividing the frequency range 10 KHz, 200 operating channels of the channel are those can be set, and, the configuration as shown in FIG. 3, the housing 1 Push button K on the operation part
₀ to K ₁₄ (However, K ₀ to K ₉ are number buttons, K ₁₀
And K ₁₁ are special code buttons, K ₁₂ is an up button, K ₁₃ is a down button, and K ₁₄ is a memory button), and when the push buttons K ₀ to K ₁₁ are operated, a key matrix circuit is formed. It is possible to write operating frequency data to the RAM 3 via 2.

On the other hand, the operating frequency written in the memory of the RAM 3 is read by operating the push buttons K ₀ to K ₉ for designating the memory channel and pressing the push button K _14. This is displayed on the display unit 4.

On the other hand, when the memory channel is scanned and read out, it is performed by pressing the push buttons K ₁₄ and K ₁₂ or K _13. However, when the push button K ₁₂ or K ₁₃ is pressed. , The tuning control circuit 5 operates via the key matrix circuit 2, and the control signal of the tuning control circuit 5 sends an up signal from the pulse generator 6 to the U terminal of the up / down counter 7 and to the D terminal. By supplying the down signal and further supplying it to the PLL circuit 8, the reference frequency of the transmission / reception circuit (not shown) is generated.

Next, when the push button K ₁₂ or K ₁₃ is pressed intermittently, the step is advanced step by step, and then 0.5 is continued.
The scanning operation is started when the button is held down for more than a second, and this scanning operation is determined by the number of pulses of the pulse generator 6. When the button is held down for more than 5 seconds, the slow scan operation is changed to the rapid scan operation.

Further, as another method for selecting a channel, there is a thumbwheel switch 9, which is connected to the pulse generator 6 through a wire to perform switching for the channel selection.

[0007]

However, in the prior art as described above, the slow scan or the quick scan is distinguished by the time during which the push button K ₁₂ or K ₁₃ is pressed, and two push buttons are required. Therefore, the operability was poor and it was very difficult to stop at the desired channel.

Further, if the push button is touched carelessly, the up / down counter may malfunction, so it is necessary to provide a separate lock button.

The present invention is based on a conventionally known tuning device,
The purpose is to improve such drawbacks.

[0010]

SUMMARY OF THE INVENTION According to the present invention, a sliding member which slides in the vertical direction is provided on a side surface of a portable transceiver, and when the sliding member does not slide in either the vertical direction, It has a structure that is always located in the center.

On the other hand, when the sliding member is slid while being pushed inward of the transceiver main body, the channel selection device has a structure in which an unlock signal and an up signal or a down signal are generated. This is to solve the problems of the prior art.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a channel selecting device of the present invention will be described with reference to the drawings. In FIG. When 12 is pushed inwardly of the housing 1 , the unlock switch 11 is closed, and when the sliding plate 12 is slid up and down, the gear switch 10 rotates accordingly.

On the other hand, when the hand is released from the sliding plate 12, the unlock switch 11 opens, and at the same time, the sliding plate 12 can slide in the vertical direction even when it is not pressed inward of the housing 1. And, in the case of always engaging,
In some cases, the engagement is performed only when the pressing operation is performed, and the engagement is not performed when the pressing operation is not performed. As the gear mechanism, the former is simpler.

Next, FIG. 2 is an explanatory view of the sliding member in the channel selecting means. A pinion gear 10a is provided on the outer peripheral portion of the gear switch 10, and a rack gear 13a is provided on one side edge portion of the gear plate 13. It is provided and this pinion gear 10
The a and the rack gear 13a always mesh with each other. Further, a holding portion 15 for holding the spring 14 is provided at the center of the other side edge of the gear plate 13, and a guide piece 16 provided at the center of one side edge of the sliding plate 12 is fitted. It has become. The guide piece 16 is transparently provided (not shown) on the side surface of the housing 1 and is further held by a stopper 16a, and by the repulsive force between the tip of the guide piece 16 and the spring 17, It is always energized.

When the sliding plate 12 is pushed inward of the housing 1 , the unlock contact 11a provided on the guide piece 16 is closed.

On the other hand, when the sliding plate 12 is slid upward or downward without being pressed, the gear switch 10 rotates, but since the unlock contacts 11a and 11b are not closed, the channel does not change.

On the other hand, when the sliding plate 12 is pushed inward of the housing 1 at a position where it is slid upward or downward, the unlock contact 1
Since 1a and 11b are closed, for example, if the sliding plate 12 is slid downward, the gear switch 10 rotates in the normal direction, and the pulse generator 6 (FIG. 1) moves the up / down counter 7 (same as above). The down signal transferred to (4) becomes valid, is further sent to the PLL circuit 8 (same as above), and is supplied to the transmission / reception circuit (not shown).

In the above embodiment, the sliding direction of the sliding plate 12 is the vertical direction with respect to the housing 1. However, the present invention is not limited to this, and the unlock contacts 11a and 11b. Is a mechanical contact point, but may be an electronic one such as a switching diode, of course.

[0019]

The present invention provides a sliding member, a means for detecting the pressing force of the sliding member, a means for returning to a fixed position when the sliding member is not pressed, and a sliding movement of the sliding member. Since it is configured to include a means for detecting the direction, it is characterized in that the unlock signal and the up signal or the down signal can be generated by the same operating member.

Therefore, there is an effect that the operation for selecting a channel is improved and the channel can be selected by the reliable operating frequency information without malfunction.

[Brief description of drawings]

FIG. 1 is a block diagram of a portable transceiver having a tuning device of the present invention.

FIG. 2 is an explanatory view showing an embodiment of a channel selection device according to the present invention.

FIG. 3 is a block diagram of a portable transceiver including a conventional channel selection device.

[Explanation of reference numerals] 1 case 2 key matrix circuit 3 RAM 4 indicator 5 tuning control circuit 6 pulse generator 7 up-down counter 8 PLL circuit 9 thumbwheel switch 10 gear switch 11 unlock switch 11a, 11b unlock contact 12 Sliding plate 13 Gear plate 13a Rack gears 14, 17 Spring 15 Holding part 16 Guide piece 16a Stopper K _{0 to} K ₁₄ Push button

Claims (1)

[Scope of utility model registration request] 1. A pulse generator that generates a pulse by inputting frequency setting data selected from a keyboard or a memory or an output signal of an up / down signal output means, and capture of the output of the pulse generator depending on the presence or absence of an unlock signal. In a channel selection device including an up-down counter to be selected and a PLL circuit that sets a frequency by the data set in the up-down counter, the up-down signal output means slides linearly on an operation surface. A moving plate, means for outputting an up signal and a down signal corresponding to the sliding direction of the sliding plate, and means for outputting an unlock signal when the sliding plate is pressed, and when not operated A station selection device comprising an up-down signal output means configured to restore a fixed position.