JP2529699Y2 - Adjustment structure of electronic equipment - Google Patents

Description

[Detailed description of the invention] Overview There is a detachable operation unit on the front side of the in-vehicle wireless device main body, and a through hole is provided in the main body on the back side of the operation unit. Through this through-hole, it is possible to adjust a circuit element for adjusting electrical characteristics, such as fine adjustment of frequency.

Therefore, the adjustment of the circuit element can be easily performed, and the adjustment can be performed in the same state as when the wireless device is used.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjustment structure for an electronic device such as an in-vehicle wireless device.

FIG. 5 is a diagram showing a conventional example. In-vehicle radio 1
Is buried near the front panel in the vehicle or suspended by a frame. The lid 3 is detached from the main body 2 of the wireless device 1. An operation unit 4 is provided on a front plate 13 of the main body 2. The operation unit 4
It comprises a knob 5 for adjusting volume and turning on / off the power, a microphone 6, a display unit 7 such as a liquid crystal display device, operation keys 8, and a speaker 9.

A circuit board 10 is housed in a housing 2a of the main body 2, and a circuit element 11 for adjusting electric characteristics such as a minute adjustment of a frequency is provided on the circuit board 10. The circuit element 11 can be adjusted by removing the lid 3 from the main body 2, exposing the circuit element 11, and performing adjustment using the driver 12.

Problems to be Solved by the Invention In the conventional example, in order to adjust the circuit element 11,
First, the wireless device 1 must be taken out of the storage section in the vehicle, and the lid 3 must be removed. Therefore, the adjustment operation is complicated. In addition, since the lid 3 is removed, radio characteristics such as a radio wave reception state and a sound reverberation state change when the lid 3 is attached, which is a normal use, and the state is adjusted to an optimum state in the normal use. There is a problem that you can not.

SUMMARY OF THE INVENTION An object of the present invention is to provide an adjustment structure of an electronic device that can simplify adjustment of a circuit element and can perform adjustment under the same conditions at the time of use.

Means for Solving the Problems The present invention includes a housing accommodating a circuit board, and an operation unit mounted on a front side of the housing and having a detachable detachable member, and a rear side of the detachable member. The case has a through hole for an adjusting operation, and a circuit whose electric characteristics are adjusted by the adjusting operation is provided on a circuit board in the case at a position facing the adjusting through hole. An adjustment structure for an electronic device, wherein an element is provided.

The operation unit installed on the front side of the housing in which the circuit board is housed, the housing behind the detachable separation member,
A through hole for an adjusting operation is provided. On the circuit board in the housing, a circuit element whose electric characteristics are adjusted by an adjusting operation is provided at a position facing the through hole. For this reason, after detaching the separating portion, the adjustment operation of the circuit element can be performed through the through hole.

FIG. 1 is a perspective view of a wireless device 20 according to an embodiment of the present invention. On a front surface of a main body 21 of the wireless device 20, a knob 22, a microphone 23, and an operation unit 27 for adjusting a volume and turning on / off the power are arranged. The operation unit 27 is a display unit such as a liquid crystal display device.
24, an operation key 25 and a speaker 26. As described later, the operation unit 27 is detachably attached to the main body 21.

FIG. 2 is an exploded perspective view of the wireless device 20 shown in FIG. The operation unit 27 and the lid 31 are removed from the main body 21 of the wireless device 20. A connector 28a is provided on a side surface of the operation unit 27, and a connector 28b corresponding to the connector 28a is provided at a position of the main body 21 corresponding to the connector 28a. The housing 21a of the main body 21 is provided with through holes 29a, 29b, 29c. The circuit board 30 is housed in the housing 21a.

FIG. 3 is a cross-sectional view showing the wireless device 20 shown in FIG. L-shaped fixtures 34 are fixed to both side surfaces of the mounting box 33 by screws 35. Mounting box 33
Is fixed to a fixing portion 36 installed in the housing 32 of the wireless device storage portion by a screw 37 via a fixing bracket 34. The radio device 20 is housed in a mounting box 33.

FIG. 4 is a perspective view of the main body 21 shown in FIG.
Circuit board 30 housed in housing 21a of body 21
An integrated circuit 38, a circuit wiring 39, and circuit elements 40a, 40b, and 40c for adjusting electrical characteristics are provided on the upper side. Through hole 2
Circuit element 40a at a position corresponding to 9a, circuit element 40b at a position corresponding to through hole 29b, and circuit element 40 at a position facing through hole 29c.
c is installed. The distance A from the center of the through hole 29 to the bottom surface of the main body 21 and the distance B from the adjustment portion of the circuit element 40 to the bottom surface of the main body 21 are selected to be equal. Therefore, adjustment of the circuit element 40 can be performed by using a driver or the like through the through hole 29.

According to the present embodiment, adjustment of the circuit element 40 can be performed through the through hole 29. Therefore, when adjusting the circuit element 40, the adjustment can be performed only by detaching the detachable operation unit 27. Therefore, there is no need to remove the radio device 20 from the mounting box 33 and remove the lid 31 as in the conventional example. Further, since the lid 31 is not removed, there is no change in the wireless device characteristics caused by removing the lid 31. Therefore, the adjustment of the circuit element is simple, and the adjustment can be performed under the same conditions as when used.

In the present embodiment, the in-vehicle wireless device 1 has been described. However, the present invention is not limited to this, and other in-vehicle devices such as a tape player and a CD (compact disk) player, a home device, etc. Is realized widely for various electronic devices.

Effects of the Invention According to the present invention, the circuit element whose electric characteristics are adjusted is provided at a position facing a through hole for adjustment provided in the housing on the rear surface of the detachable detachable portion. For this reason,
Adjustment of the circuit element may be performed only through the through hole after detaching the separation unit, and the adjustment operation is simple, and the adjustment can be performed in the same state as when used.

[Brief description of the drawings]

1 is a perspective view of the wireless device 20 according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of the wireless device 20 shown in FIG. 1, and FIG. 3 is a view of the wireless device 20 shown in FIG. FIG. 4 is a sectional view showing a plan view when mounted on a vehicle, FIG. 4 is a perspective view of the main body 21 shown in FIG. 1, and FIG. 5 is a view showing a conventional example. 20… radio, 21… body, 21a… housing, 27…
… Operation parts, 29a, 29b, 29c …… Through holes, 30 …… Circuit boards, 40
a, 40b, 40c …… Circuit element

Claims (1)

(57) [Scope of request for utility model registration] An enclosure includes a housing in which a circuit board is housed, and an operation unit mounted on a front side of the housing and having a detachable detachable member. A through hole for operation is provided, and a circuit element whose electric characteristics are adjusted by an adjusting operation is provided on the circuit board in the housing at a position facing the through hole for adjustment. An electronic device adjustment structure, characterized in that: