JP2007035376A - Electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic device composed by mounting a detachably-mounted general-purpose electronic unit thereto and capable of restraining stress generation in a soldering part between a first connector on the electronic unit side and a second connector on the body side forming a male and female pair, and of restraining decrease of a mechanical life against vibration or the like. <P>SOLUTION: In this electronic device 10, the electronic unit 1 is fixed to a holder 2 and the holder 2 is slid along a guide frame 3. The electronic device 10 is so structured that the first connector C1 is arranged on an end face of the electronic unit 1; the second connector C2 is arranged on a board 4 fixed to the guide frame 2; and the first connector C1 is fitted to the second connector C2 by the sliding. In the electronic device 10, connector guides Cg contacting a surface of the second connector C2 in parallel with the sliding direction thereof in sliding are mounted to the holder 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device including a general-purpose detachable electronic unit such as a hard disk, and more particularly to an on-vehicle electronic device such as an on-vehicle navigation device.

  In recent years, in-vehicle navigation devices have dramatically increased data capacity, and it is indispensable to install a hard disk.

  As for a hard disk used for an in-vehicle navigation device, there is a general-purpose inexpensive hard disk unit disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-213840 (Patent Document 1) as an electronic unit that is detachably assembled. . When such a general-purpose hard disk unit is used in an in-vehicle navigation device, the connection structure shown below is used in order to ensure detachability and vibration resistance.

  FIG. 5 is a schematic partial cross-sectional view showing a connection structure of a hard disk unit in a conventional in-vehicle navigation device.

The general-purpose hard disk unit 1 is fixed to a holder 2 designed for exclusive use, and the holder 2 is slid along the guide frame 3 in the Z direction as indicated by a white arrow to be attached to the body of the in-vehicle navigation device. It is assembled so as to be removable. In the general-purpose hard disk unit 1, one first connector C <b> 1 that forms a male-female pair is disposed on the end surface. The other second connector C2 that forms a male-female pair is disposed on the substrate 4 fixed to the guide frame 3, and is connected to the main body of the in-vehicle navigation device. The first connector C1 and the second connector C2 are fitted when the holder 2 is slid, and the hard disk unit 1 is connected to the main body of the in-vehicle navigation device.
JP 2004-213840 A

  In an electronic device used in an in-vehicle environment such as the navigation device described above, in order to satisfy the mechanical life of the soldered portion of the connector against vibration or the like, the position of the connector that forms a pair of male and female is accurately aligned and soldered. It is necessary to reduce the stress applied to the attachment portion. For example, in the connection of the hard disk unit 1 shown in FIG. 5, in order to sufficiently reduce the stress applied to the soldered portion, it is necessary to make the positioning accuracy in the X direction of the first connector C1 and the second connector C2 as small as possible. There is.

  On the other hand, in the conventional connection structure shown in FIG. 5, the positioning of the first connector C1 and the second connector C2 is assembled with the dimensional tolerances of the individual parts including the hard disk unit 1, the holder 2, the guide frame 3, and the board 4. Tolerance is performed. However, there is a limit to refinement of the dimensional accuracy and assembly accuracy of the individual components, and a movable space is required between the guide frames 3 in order to smoothly slide the holder 2. For this reason, in the X direction of FIG. 5, the fitting position of the first connector C1 and the second connector C2 varies, stress is generated in the soldered portion of the first connector C1 or the second connector C2, vibration, etc. May reduce the mechanical life.

  Therefore, the present invention is an electronic apparatus equipped with a general-purpose electronic unit that is detachably assembled, and generates stress in the soldering portion of the first connector on the electronic unit side and the second connector on the main body side that form a male-female pair. An object of the present invention is to provide an electronic device that suppresses a reduction in mechanical life against vibration and the like.

  The invention according to claim 1 is an electronic apparatus on which the electronic unit is mounted so as to be detachable by fixing the electronic unit to a holder and sliding the holder along the guide frame. One of the first connectors is disposed on an end surface of the electronic unit, and the other second connector is disposed on a substrate fixed to the guide frame. In an electronic device in which two connectors are fitted and the electronic unit is connected to a main body, a connector guide that contacts a surface parallel to the sliding direction of the second connector or the first connector at the time of sliding is the holder or guide It is characterized by being provided on a frame.

  In the above electronic apparatus, the position of the first connector or the second connector is slid by bringing the connector guide provided on the holder or the guide frame into contact with a surface parallel to the sliding direction of the second connector or the first connector when sliding. Fine adjustment can be made in a direction perpendicular to the direction. As a result, the fitting positions of the first connector and the second connector can be aligned, and the reduction of the mechanical life against stress generation and vibration in the soldered portions of the first connector and the second connector can be suppressed.

  According to a second aspect of the present invention, the board on which the second connector is disposed can be configured to be fixed to the guide frame substantially perpendicular to the sliding direction, for example.

  Thus, the pressing force applied by the slide of the holder when the first connector and the second connector are fitted can be received and dispersed by the substrate fixed substantially perpendicular to the sliding direction.

  According to a third aspect of the present invention, in the electronic device, when the mating surfaces of the first connector and the second connector facing each other are substantially rectangular, the connector guide is likely to cause a large positional deviation. It is preferable that the fitting position in the long side direction of the substantially rectangular shape is matched.

  In addition, when the connector guide is aligned with the fitting position in the long side direction of a substantially rectangular shape, for example, as described in claim 4, in the first connector and the second connector that form a pair of the male and female, A first connector that forms a pair of male and female, so that the connection terminal of the female connector can be displaced in the long side direction of the substantially rectangular shape, and the connection terminal of the female connector can be deformed in the short side direction of the substantially rectangular shape. A second connector can be configured.

  According to this, after adjusting the fitting position with the connector guide, the position variation in the long side direction is further absorbed by the displacement in the long side direction of the male side connection terminal, and the position variation in the short side direction is absorbed by the female side connection. It can be absorbed by deformation in the short side direction of the terminal. As a result, it is possible to further suppress the generation of stress in the soldered portions of the first connector and the second connector.

  In the electronic device, the connector guide may be provided on the guide frame. However, as described in claim 5, the connector guide is preferably provided on the holder.

  This is because when the electronic unit is fixed to the holder, there is no substrate or the like, and accurate position setting is possible. Accordingly, the first connector disposed in the electronic unit and the connector guide provided in the holder are also accurately set. Thereby, the fitting position alignment of the first connector and the second connector via the connector guide becomes more accurate.

  When the connector guide is provided in the holder, for example, as described in claim 6, the connector guide is deformed in a call-in shape in which both ends sandwiching the first connector are widened toward the second connector. It is preferable to be arranged.

  The first connector and the second connector along the connector guide can be smoothly inserted and removed by the calling shape of the connector guide and the deformable arrangement.

  According to a seventh aspect of the present invention, the connector guide is preferably formed integrally with the holder.

  According to this, compared with the case where the connector guide is formed as a separate body and assembled to the holder, there is no variation factor due to the assembly of the connector guide and the holder, accurate position setting is possible, and the manufacturing cost is also reduced. Can do.

  In the electronic device in which the first connector and the second connector are fitted by sliding the holder, the first on the sliding holder side is provided as in claim 8, similarly to the configuration of a commonly used connector. Preferably, the connector is a male connector, and the second connector on the guide frame side in a fixed state is a female connector.

  The electronic device has a configuration suitable when the electronic unit is a hard disk unit, for example.

  Since the hard disk unit is heavy, if there is a shift in the fitting position, the influence on the soldering part is great. However, in the above electronic device, even a heavy hard disk unit can be detachably mounted, and the fitting position of the first connector and the second connector can be accurately aligned by the connector guide, so Reduction of mechanical life against generation and vibration can be suppressed.

  According to a tenth aspect of the present invention, the electronic device is suitable for an in-vehicle electronic device used in an environment with a large vibration. In addition, as described in claim 11, the electronic device is particularly suitable for an in-vehicle navigation device in which data capacity has increased dramatically in recent years and mounting of a hard disk is indispensable.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 and FIG. 2 are diagrams showing an in-vehicle navigation device 10 as an example of the electronic device of the present invention. FIG. 1A is a perspective view showing an appearance of the in-vehicle navigation device (display assembly) 10, and FIG. 1B is a perspective view showing the inside of the in-vehicle navigation device 10 in cross section. FIG.1 (c) is the perspective view which took out and showed the circumference | surroundings of the hard disk unit 1 of the vehicle-mounted navigation apparatus 10 which is the principal part of this invention.

  FIG. 2 is a perspective view showing the hard disk unit 1 shown in FIG. In FIGS. 1B, 1C, and 2, the same reference numerals are assigned to the same components as those in the conventional hard disk unit connection structure shown in FIG.

  In recent in-vehicle navigation devices, since the data capacity has increased dramatically, it is indispensable to install a hard disk. 1A to 1C, the hard disk unit 1 is fixed to the holder 2 and the holder 2 is slid along the guide frame 3. Thereby, the hard disk unit 1 is assembled to the in-vehicle navigation device 10 so as to be detachable.

  As shown in FIG. 2, one first connector C1 that forms a male-female pair is disposed on the end face of the hard disk unit 1, and the other second connector C2 is an interface (I / I) fixed to the guide frame 3. F) Arranged on the substrate 4. The first connector C1 and the second connector C2 are fitted by sliding along the guide frame 3 of the holder 2, and the hard disk unit 1 is attached to the main body of the in-vehicle navigation device 10 as shown in FIG. Connected.

  The I / F board 4 on which the second connector C2 is disposed is fixed to the guide frame 2 substantially perpendicular to the sliding direction. Thereby, when the first connector C1 and the second connector C2 are fitted, the pressing force applied by the slide of the holder 2 is received and dispersed by the I / F board 4 fixed substantially perpendicular to the slide direction. be able to.

  As shown in FIG. 2, the holder 2 to which the hard disk unit 1 is fixed is provided with a connector guide Cg. The connector guide Cg is set so as to contact a side surface C2s parallel to the sliding direction (Z direction) of the second connector C2 during sliding. The connector guide Cg is formed integrally with the holder 2. As a result, as compared with the case where the connector guide Cg is formed as a separate body and assembled to the holder 2, there is no variation factor due to the assembly of the connector guide Cg and the holder 2, and an accurate position can be set. In addition, the manufacturing cost can be reduced.

  FIGS. 3A and 3B are schematic partial cross-sectional views illustrating a state in which the holder 2 is slid to fit the first connector C1 and the second connector C2.

  As shown in FIG. 3A, the connector guide Cg is disposed in the holder 2 so as to be deformable in a call-in shape in which the tip is widened toward the second connector C2 on both sides of the first connector C1. The first connector C1 and the second connector C2 can be smoothly inserted / removed along the connector guide Cg by the drawing shape of the connector guide Cg and the deformable arrangement.

  As shown in FIG. 3B, in the in-vehicle navigation device 10, the connector guide Cg is brought into contact with the side surface C2s parallel to the sliding direction (Z direction) of the second connector C2 when sliding, The position of the first connector C1 can be finely adjusted in the direction (X direction) perpendicular to the sliding direction. Thereby, the fitting positions of the first connector C1 and the second connector C2 can be aligned. Accordingly, this can suppress a reduction in mechanical life against stress generation and vibration in the soldered portions of the first connector C1 and the second connector C2.

  In the in-vehicle navigation device 10 shown in FIGS. 1 to 3, the connector guide Cg is provided in the holder 2, but a connector guide that contacts a surface parallel to the sliding direction of the first connector C <b> 1 at the time of sliding is provided in the guide frame 3. You may do it. However, the connector guide Cg is preferably provided in the holder 2 as described above. The hard disk unit 1 is fixed with screws in a state of being positioned on the holder 2, and the I / F board 4 or the like is not interposed between the hard disk unit 1 and the holder 2, so that an accurate position is set. Accordingly, the first connector C1 disposed in the hard disk unit 1 and the connector guide Cg provided in the holder 2 can also be accurately set. Thereby, compared with the case where the connector guide is provided on the guide frame 3, the fitting position alignment of the first connector C1 and the second connector C2 via the connector guide Cg becomes more accurate.

  In the in-vehicle navigation device 10 shown in FIGS. 1 to 3, the first connector C1 on the holder 2 side that slides is a male connector, and the first guide C3 on the side of the guide frame 3 in a fixed state is the same as the configuration of a connector that is generally used. 2 The connector C2 is a female connector.

  FIG. 4 is a diagram showing a female connector as the second connector C2, FIG. 4 (a) is a perspective view showing the inside of the second connector C2 in section, and FIG. 4 (b) is a connection terminal. It is the perspective view which took out and showed C2p.

  The fitting surface of the second connector C2 facing the first connector C1 that appears on the upper surface of FIG. 4A is a substantially rectangular shape with the X direction as the long side and the Y direction as the short side. For this reason, the connector guide Cg provided in the holder 2 is set so as to come into contact with the surface C2s parallel to the sliding direction (Z direction) on the short side of the second connector C2 during sliding, and a large positional deviation occurs. It is configured so that the fitting position in the long side direction of a substantially rectangular shape that is easy to match.

  As can be seen from the structure of the connection terminal C2p of the female connector shown in FIG. 4B, the pin-shaped connection terminal C1p of the male connector (first connector C1) of FIG. Can be displaced in the long side direction (X direction). Further, the connection terminal C2p of the female connector (second connector C2) shown in FIGS. 3B and 4B has a structure that can be deformed in a substantially rectangular short side direction (Y direction). Thereby, after adjusting the fitting position by the connector guide Cg in FIG. 3B, the position variation in the long side direction (X direction) is further absorbed by the displacement in the long side direction of the male connection terminal C1p. The positional variation in the short side direction (Y direction) can be absorbed by the deformation in the short side direction of the female side connection terminal C2p. As a result, it is possible to further suppress the generation of stress at the soldered portions of the first connector C1 and the second connector C2.

  The in-vehicle navigation device 10 shown in FIGS. 1 to 4 is an in-vehicle electronic device that is used in an environment with a large vibration, and is an electronic device in which a general-purpose hard disk unit 1 that is detachably assembled is mounted. Since the hard disk unit 1 is heavy, if there is a shift in the fitting position of the first connector C1 and the second connector C2, the influence on the soldered portions of the first connector C1 and the second connector C2 is great. However, in the on-vehicle navigation device 10 described above, even the heavy hard disk unit 1 can be detachably mounted, and the fitting positions of the first connector C1 and the second connector C2 are accurately aligned by the connector guide Cg. Thus, the generation of stress at the soldering portion can be suppressed. As a result, even when used in an environment with large vibrations, it is possible to suppress a reduction in mechanical life against vibrations of the soldered portion.

  As described above, the electronic device of the present invention is suitable for an in-vehicle navigation device equipped with a hard disk unit. However, the electronic device of the present invention is not limited to this, and is an electronic device on which an arbitrary electronic unit that can be attached and detached is mounted by fixing the electronic unit to a holder and sliding the holder along the guide frame. It's okay.

  In the electronic device according to the present invention, one first connector forming a male / female pair is disposed on the end face of the electronic unit, and the other second connector is disposed on a substrate fixed to the guide frame. Thus, the electronic connector is connected to the main body by fitting the first connector and the second connector by sliding. In addition, a connector guide that contacts a surface parallel to the sliding direction of the second connector or the first connector at the time of sliding is provided on the holder or the guide frame. As a result, it is possible to suppress the generation of stress in the soldered portion of the first connector on the electronic unit side and the second connector on the main body side that form a male-female pair, and to reduce the mechanical life against vibration or the like. it can.

1A is a perspective view showing an external appearance of an in-vehicle navigation device (display assembly) 10, and FIG. 1B is a perspective view showing the inside of the in-vehicle navigation device 10 in a cross section. FIG. (C) is the perspective view which took out and showed the circumference | surroundings of the hard-disk unit 1 of the vehicle-mounted navigation apparatus 10 which is the principal part of this invention. It is the perspective view which decomposed | disassembled and showed the surroundings of the hard-disk unit 1 shown to FIG. (A), (b) is typical fragmentary sectional drawing which showed the mode in the middle of making the holder 2 slide and fitting the 1st connector C1 and the 2nd connector C2. 2A and 2B are views showing a female connector that is the second connector C2, in which FIG. 1A is a perspective view showing the inside of the second connector C2 in section, and FIG. 2B is a perspective view showing the connection terminal C2p taken out; It is. It is a typical fragmentary sectional view which shows the connection structure of the hard-disk unit in the conventional vehicle-mounted navigation apparatus.

Explanation of symbols

10 Electronic device (in-vehicle navigation device)
1 Electronic unit (hard disk unit)
2 Holder 3 Guide frame 4 (I / F) board C1 1st connector C2 2nd connector C2s Side surface parallel to slide direction (Z direction) of 2nd connector C1p, C2p Connection terminal Cg Connector guide

Claims (11)

An electronic device that mounts the electronic unit detachably assembled by fixing the electronic unit to a holder and sliding the holder along the guide frame,
One first connector forming a male / female pair is disposed on the end face of the electronic unit, and the other second connector is disposed on a substrate fixed to the guide frame,
In the electronic apparatus for fitting the first connector and the second connector by the slide and connecting the electronic unit to the main body,
An electronic device, wherein a connector guide that contacts a surface parallel to a sliding direction of the second connector or the first connector during the sliding is provided on the holder or the guide frame.   The electronic device according to claim 1, wherein the substrate is fixed substantially perpendicular to the sliding direction. The opposing fitting surfaces of the first connector and the second connector are substantially rectangular,
The electronic device according to claim 1, wherein the connector guide matches a fitting position in a long side direction of the substantially rectangular shape. In the first connector and the second connector forming a pair of the male and female,
The connection terminal of the male connector is displaceable in the long side direction of the substantially rectangular shape, and the connection terminal of the female connector is deformable in the short side direction of the substantially rectangular shape. The electronic device described.   The electronic device according to claim 1, wherein the connector guide is provided on the holder.   6. The electronic device according to claim 5, wherein the connector guide is deformably disposed on both sides sandwiching the first connector so as to have a call-in shape in which a distal end extends toward the second connector.   The electronic device according to claim 5, wherein the connector guide is integrally formed with the holder.   The electronic device according to claim 1, wherein the first connector is a male connector, and the second connector is a female connector.   9. The electronic device according to claim 1, wherein the electronic unit is a hard disk unit.   The electronic device according to claim 1, wherein the electronic device is an in-vehicle electronic device.   The electronic device according to claim 10, wherein the electronic device is an in-vehicle navigation device.

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