JP2007036760A - Implement structure of vehicle-mounted tuner module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve reliability against vibration and reduce the number of man-hours in assembling, in the mounting of a vehicle-mounted tuner module. <P>SOLUTION: In the mounting structure of the vehicle-mounted tuner module, the tuner module is mounted on an implement board arranged at a body of a vehicle through connectors. A connector arranged at the mounting board is a movable connector. A connector at the vehicle-mounted tuner module is preferably arranged near the center of the tuner module. Reliability against vibration is assured even if a housing of the tuner module is made by aluminum die casting and heavy. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mounting structure of an in-vehicle tuner module for receiving digital broadcasting or the like in a vehicle, and more particularly to a technique for improving reliability against vibration.

  In recent years, with the digitization of broadcasting, tuner modules for receiving this have also been digitized. Therefore, digital signals are output from the tuner module, and the number of output pins from the tuner module tends to increase. For example, the number of output pins is usually 30 or more. Further, the pitch of the output pins arranged correspondingly is also narrowed.

  On the other hand, broadcast reception forms are also diversified, and opportunities to receive broadcasts and view them not only in homes but also in automobiles, for example, are increasing. Therefore, the tuner module is also widely installed in the vehicle.

  As described above, when the tuner module is installed in the vehicle, it is necessary to install the module with high reliability against vibration unlike the installation in other places. Typical methods for installing the tuner module include soldering and screwing, but are not sufficient from the viewpoint of the highly reliable mounting. As described above, a tuner module that receives digital broadcasting has a large number of output pins and a narrow pitch. Therefore, when vibration is applied, a load is applied to the soldering portion, which may cause problems such as solder cracks. Is expensive.

As a mounting structure of a printed wiring board built in an in-vehicle electronic device, for example, as described in Patent Document 1, an attempt has been made to prevent distortion in a soldered portion by devising a screwing structure. However, it cannot be used as it is in the installation of a tuner module in which the connection of the output pin to the wiring board is indispensable.
JP 10-1405060 A

  As mentioned above, it is indispensable to improve the reliability against vibration in the in-vehicle tuner module, but it can be mounted with high reliability, and the number of assembly steps is small, which increases the number of output pins. A compatible mounting structure has not yet been realized. For example, it is conceivable to use an FPC connector for connecting an in-vehicle tuner module. However, an FPC cable is not desirable because it has a whisker problem.

  The present invention has been proposed in view of such a conventional situation, and can improve the reliability with respect to vibration, has a small number of assembly steps, and can cope with an increase in the number of output pins. The purpose is to provide a mounting structure.

  In order to achieve the above-described object, the mounting structure of the on-vehicle tuner module of the present invention is a mounting structure of an on-vehicle tuner module in which the tuner module is mounted on a mounting board provided on the vehicle body via a connector. The connector provided on the mounting board side is a movable connector.

  By making the connector on the mounting board side a movable connector, vibration is absorbed by the movable connector and is not transmitted to the connection portion with the tuner module. In addition, the tuner module and the mounting substrate are connected via a connector, and soldering is not required. Therefore, a load is applied to the soldering portion, and problems such as solder cracks do not occur. Further, when the tuner module is mounted, it is only necessary to connect the connector, and the number of steps for mounting is greatly reduced. Furthermore, when a connector is used, it is possible to easily cope with an increase in the number of outputs of the tuner module.

  According to the present invention, since the mounting board and the tuner module are connected using the movable connector, a highly reliable connection with respect to vibration is possible. Further, the number of assembling steps can be greatly reduced during mounting, and it is possible to easily cope with an increase in the number of output pins.

  Hereinafter, a mounting structure of a vehicle-mounted tuner module to which the present invention is applied will be described in detail with reference to the drawings.

  FIG. 1 shows an example of a mounting structure (mounting structure) of a tuner module 1 to which the present invention is applied to a mounting board 2. In this example, the tuner module 1 is mounted on the mounting board 2 so that the mounting board 2 and the tuner module 1 are mechanically fixed via the connector 3 and at the same time, Connections are made.

In addition to the horizontal portion 2a on which the tuner module 1 is placed, the mounting board 2 has a vertical portion 2b that rises substantially perpendicular to the horizontal portion 2a. ? 2b is the front panel of the housing?
The tuner module 1 is screwed to the vertical portion 2b with a screw 4. Further, the antenna input terminal 1a of the tuner module 1 is inserted through a through hole provided in the vertical portion 2b and faces the outside, and an antenna line is attached to the antenna input terminal 1a.

  The mounting structure is characterized in that a movable connector is used as the connector 3, and this connector portion will be described in detail below.

  2A and 2B are views of the tuner module 1 as viewed from the side surface and the bottom surface. The tuner module 1 has various circuit components built in a case (housing) made of, for example, aluminum die-cast, and has an antenna input terminal 1a at one end and a module-side connector 31 at the bottom. Is provided. In the module-side connector 31, terminals 31b are arranged on the inner surface side of the two connector plates 31a, and the outputs of circuits built in these terminals 31b are connected. The heat radiating fins 5 are integrally formed on the surface of the case made of aluminum die cast, and efficiently radiate the heat of the case.

  On the other hand, FIG. 3A and FIG. 3B show the board-side connector 32 provided on the mounting board 1. In the board-side connector 32, a casing 32a surrounding the periphery and a center plate 32b partitioning the center are formed of plastic or the like, and metal terminal pins 32c are arranged on both surfaces of the center plate 32b. Therefore, when the connector plate 31a of the module-side connector 31 is inserted between the housing portion 32a and the center plate 32b, the terminals 31b come into contact with the terminal pins 32c, respectively, and electrical connection is achieved. Further, mechanical fixing is also achieved by the spring property of the terminal 31 and the terminal pin 32c.

  Further, in the board-side connector 32, the terminal pin 32c is extended, the base end portion 32d thereof is formed in a curved shape, and a function as a spring material is given. The board-side connector 32 is fixed to the mounting board 2 at the further base end side 32e of the base end part 32d. Therefore, the housing part 32a, the center plate 32b, and the terminal pins 32c It can be attached via a spring. As a result, the board-side connector 32 functions as a movable connector, and the vibration is absorbed by the base end portion 32d and is not transmitted to the connection portion between the terminal 31b and the terminal pin 32c.

  In the mounting structure as described above, the reliability of vibration can be greatly improved by the action of the board-side connector 32 which is a movable connector. As the movable connector, for example, a surface mount type small product has been developed, and a movable range of 0.8 mm or more is known. By using this, it is possible to eliminate the need for terminal soldering, Solder cracks can also be eliminated. In addition, when the case of the tuner module 1 is made of aluminum die cast as described above, the heat dissipation is good, but the weight becomes large and is easily affected by vibration. It is possible to improve reliability against vibration.

  When the mounting structure using the movable connector is adopted as described above, the attachment position of the connector 3 is basically arbitrary, but it is arranged at the center of the tuner module 1 as shown in FIG. Thus, the balance with respect to weight is improved, and the reliability with respect to vibration can be further improved.

It is a side view which shows typically an example of the mounting structure of the tuner module to which this invention is applied. The tuner module is shown, a) is a schematic perspective view, and (b) is a schematic bottom view. The structure of a board | substrate side connector is shown, (a) is a schematic perspective view, (b) is a schematic sectional drawing. It is a side view which shows typically the other example of the mounting structure of the tuner module to which this invention is applied.

Explanation of symbols

1 tuner module, 1a antenna input terminal, 2 mounting board, 2a horizontal part, 2b vertical part, 3 connector, 4 screw, 31 module side connector, 32 board side connector

Claims (4)

An on-vehicle tuner module mounting structure in which a tuner module is mounted on a mounting board provided on a vehicle body via a connector,
A mounting structure of a vehicle-mounted tuner module, wherein the connector provided on the mounting substrate side is a movable connector.   The mounting structure for a vehicle-mounted tuner module according to claim 1, wherein a connector on the tuner module side is provided at a substantially central portion of the vehicle-mounted tuner module.   The mounting structure for a vehicle-mounted tuner module according to claim 1 or 2, wherein a casing of the vehicle-mounted tuner module is made of aluminum die casting. 4. The vehicle-mounted tuner module is fixed by screws to a board disposed substantially perpendicular to the mounting board on which the movable connector is provided. 5. Mounting structure for in-vehicle tuner modules.

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