JPH0457076B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electronic device that electrically connects an electronic device body such as a car stereo and an operation unit that is detachably attached to the electronic device body, and its terminal. It's about structure.

[Conventional technology]

Conventionally, car stereos are installed and used inside the vehicle.

By the way, in this car stereo, in order to prevent accidents such as theft of the car stereo, the main body of the car stereo and the operation unit equipped with operation switches etc. that control various functions of the car stereo are made as separate parts. Some car stereos are constructed so that the car stereo cannot be operated until the operating unit is attached to the car stereo main body.

In other words, with this configuration, when the driver leaves the car, if the operating unit is removed from the car stereo and carried with him, the car stereo cannot be operated by itself, so the car stereo cannot be stolen. It will never happen.

By the way, in this kind of car stereo,
The car stereo main body and the operation unit are each provided with a terminal portion for electrically connecting the two.

[Problem that the invention seeks to solve]

However, since this operating unit is repeatedly attached and detached from the car stereo body, conventional terminal structures such as pin structures have had problems such as easy wear of the terminals.

The present invention has been made in view of the above-mentioned points, and eliminates the above-mentioned problems.
It is an object of the present invention to provide an electronic device and its terminal structure whose terminals are less likely to wear out and which are easy to attach and detach.

[Means for solving problems]

In order to solve the above problems, the present invention provides an electronic device including an electronic device main body and an operating unit that is detachably attached to the electronic device main body, and the electronic device main body has a size that accommodates the operating unit.・Providing a recess in the shape of the recess, providing a terminal portion with a conductive pattern exposed on the bottom of the recess, providing protrusions on both sides of the recess, and providing a stopper mechanism on the other side of the recess; A terminal portion with a conductive pattern exposed is provided on the bottom surface of the operating unit, and a notch is provided on both sides of the operating unit to rotatably engage with a protrusion provided on the main body of the electronic device. One side is provided with an engaging protrusion that removably engages with a stopper mechanism provided on the electronic device main body, and when the notch of the operating unit is engaged with the protrusion of the electronic device main body, the operating unit is engaged. The protrusion is engaged with a stopper mechanism of the electronic device main body to house the operating unit in the recess of the electronic device main body, and in this state, the terminal portion of the operating unit and the terminal portion of the electronic device main body are pressed together.

Further, the present invention provides a terminal structure for an electronic device including a main body of the electronic device and an operation unit that is detachably attached to the main body of the electronic device, and a plurality of conductive wires are provided at predetermined positions of the main body of the electronic device and the operation unit, respectively. Providing a terminal portion where the opposing conductive patterns are electrically connected to each other when the operating unit is mounted on the electronic device main body with the pattern exposed;
At least one of the two terminal parts has an elastic member fixed on a long member, and a flexible printed circuit board having a plurality of conductive patterns formed on a flexible insulating film is attached on the elastic member,
Furthermore, a plurality of notches are provided on the surface of the elastic member, in which each conductive pattern portion of the flexible substrate is placed independently, and when the operating unit is attached to the main body of the electronic device, it is divided by the notches. The plurality of conductive patterns on the terminal portion of the electronic device main body and the plurality of conductive patterns on the terminal portion of the operating unit are independently pressed and connected by each of the elastic members.

[Effect]

As described above, in the electronic device according to the present invention, the notch provided on the operating unit is engaged with the protrusion provided on the electronic device main body, and the engaging protrusion provided on the operating unit is connected to the stopper provided on the electronic device main body. Since the operating unit is engaged with the mechanism and housed in the recess of the electronic device main body, the operating unit can be easily attached to and removed from the electronic device main body.

By configuring the terminal structure of electronic equipment as described above, an elastic member is attached to at least one of the terminal parts, so even if both terminal parts are pressed into contact, the contact part of the terminal part will hardly wear out. do not have.

Furthermore, since the connection between both terminals is simply surface contact, attachment and detachment are easy.

Furthermore, since multiple notches are provided on the surface of the elastic member to allow each conductive pattern portion of the flexible substrate to be placed independently, the multiple conductive patterns of the terminal portion of the electronic device body and the terminal portion of the operating unit can be connected to each other. The plurality of conductive patterns are independently and reliably pressed together. Therefore, any conductive patterns are reliably connected.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 is a side sectional view showing a schematic structure of an electronic device and its terminal structure in a state where a car stereo operation unit according to the present embodiment is attached to a car stereo main body.

As shown in the figure, the electronic device and its terminal structure according to this embodiment include a car stereo main body 100 (consisting of a car stereo main body panel 1, a board 2, a terminal section 3, etc.), Main body 10
An operating unit 50 that can be detachably attached to
0, and the terminal parts 3 and 7 provided on each of the car stereo main body 100 and the operating unit 500 are formed in a predetermined structure, so that when the operating unit 500 is attached to the car stereo main body 100, the terminal parts of both 3 and 7 are configured so that they are in contact with each other.

Each component of the electronic device and its terminal structure according to this embodiment will be described in detail below.

FIG. 2 shows the car stereo body 100 shown in FIG.
It is a figure showing the flexible printed circuit board 31 used for the terminal part 3 attached to the side, and
is a plan view, and figure b is an enlarged cross-sectional view taken along line A--A in figure a.

To form the flexible printed circuit board 31, first, a desired conductive pattern 33 is formed on an insulating film 32 made of a flexible material (for example, polyimide) and cut into a predetermined shape.

Next, an insulating coating 34 made of synthetic resin is formed on the entire surface of the insulating film 32 except for the terminal pattern portions 35 and 36. Therefore, the terminal pattern part 3
The conductive pattern 33 at portions 5 and 36 is exposed. Further, holes 37 are formed at predetermined locations near the terminal pattern portion 35 for fixing the terminal pattern portion 35 to an elongated member 40 described below.

3 is a diagram showing the elongated member 40 and the elastic member 47 used in the terminal portion 3 shown in FIG. 1, in which figure a is a plan view, figure b is a front view, and figure c is a side view. It is.

As shown in the figure, the elongated member 40 is mounted on a base 41 made of a long flat plate with two
Two elongated protrusions 42, 42 are formed integrally with the base 41.

Here, a protrusion 43 that is inserted into the hole 37 formed in the flexible printed circuit board 31 is provided protrudingly at a predetermined location on the base 41.
A protrusion 44 for fixing the elongated member 40 to the substrate 2, which will be described below, is also protruded at a predetermined position on the back surface of the substrate 1.

And the elongated protrusions 42, 42 on the elongated member 40
In between, an elastic member 47 made of an elastic material (for example, synthetic rubber) is inserted and fixed. This elastic member 47 is long and has an arcuate upper surface. Further, cutouts 48 are provided on the upper surface in order to independently place the conductive patterns 33 (see FIG. 2) on the terminal pattern section 35 of the flexible printed circuit board 31, respectively.

FIG. 4 is a diagram showing a state in which the terminal pattern portion 35 of the flexible printed circuit board 31 is stretched over the elastic member 47 to constitute the terminal portion 3;
is its front view, and figure b is its side view.

In order to stretch the terminal pattern portion 35 of the flexible printed circuit board 31 onto the elastic member 47, as shown in the figure, the protrusion 43 on the base 41 is inserted into the hole 37 of the flexible printed circuit board 31.
The tip of the protrusion 43 can be heat caulked.

Next, a method for attaching the terminal section 3 to the car stereo main body 100 will be explained.

Here, FIG. 5 is a schematic side cross-sectional view showing a state in which the terminal section 3 is placed on the board 2 and the board 2 is attached to the car stereo main body panel 1 (the cut portion is on the line B-B in FIG. 6). FIG. 6 is a plan view showing the car stereo main body panel 1.

First, as shown in FIG.
A recess 11 into which the 0 is inserted is formed, and a hole 1 formed in the recess 11 is formed with protrusions 16, 16 provided on a grounding plate 15 made of an aluminum plate.
The earth plate 1 is rotatably inserted and supported in 3 and 13.
5 is placed in the recess 11. At this time, earth plate 15
are urged upward by coil springs 17, 17 inserted into holes 14, 14 formed in the recess 11 (see FIG. 5). And this earth plate 1
5 is in contact with the protrusions 18, 18 as shown in FIG.

Note that 15a shown in FIG. 6 is a long hole provided in the ground plate 15, 19 is a hole for attaching various devices on the car stereo main body 1, and 21 is a stopper for attaching and detaching the operating unit 500 described below. It is a mechanism.

Then, as shown in FIG. 5, a board 2 with a terminal section 3 attached thereto is attached to the back side of the car stereo main body 1.

Note that the terminal pattern portion 36 (see FIG. 2) of this flexible printed circuit board 31 is soldered to a predetermined conductive pattern on the board 2 (not shown).

Also, at this time, the terminal pattern portion 3 of the terminal portion 3 is
5 stands out a little. In FIG. 6, the position of the terminal portion 3 is shown by dotted lines.

FIG. 7 is a diagram showing the operating unit 500,
Figure a is a plan view, figure b is a back view, and figure c is a side view.

As shown in the figure, the terminal portion 7 is exposed from a predetermined portion of the back surface of the operating unit 500.

Here, on the surface of the operating unit 500, there are formed a sliding operating section 51-1 for adjusting the volume of the left and right speakers, a sliding operating section 51-1 for adjusting the volume of the left and right speakers, a graphic equalizer, etc., and a push button operating section 51-2 consisting of various push button switches. The following locking protrusions 18, 1 of the car stereo main body 1 are provided at the corners of both sides of the operation unit 5.
The stopper mechanism 2 of the car stereo body panel 1 is formed at the lower center of the upper side surface of the operation unit 500.
1 is provided in a protruding manner.

FIG. 8 is a plan view showing a flexible printed circuit board 71 used for the terminal section 7 attached to the operating unit 500 side.

To form the flexible printed circuit board 71, in the same way as the flexible printed circuit board 31, first, an insulating film 72 made of a flexible material (for example, polyimide) is cut into a predetermined shape.
A desired conductive pattern 73 is formed thereon, and then terminal pattern portions 75, 7 on the upper surface of the insulating film 72 are formed.
An insulating coating 74 of synthetic resin is formed on the entire surface except for 6 portions. Therefore, the conductive pattern 73 in the terminal pattern portions 75 and 76 is exposed. Also, in the vicinity of the terminal pattern portion 75, this terminal pattern portion 75
Holes 77 are formed at predetermined locations for fixing the portion to an elongated member 80, which will be described below.

FIG. 9 shows a long member 80 used in the terminal section 7 on the operating unit 500 side, in which FIG. 9A is a plan view, FIG. 9B is a front view, and FIG. 9C is a side view.

As shown in the figure, the elongated member 80 is constructed by forming an elongated protrusion 82 on a base 81 made of an elongated flat plate. That is, this elongated member 80 is integrally formed with a convex cross section.

Here, a protrusion 83 that is inserted into a hole formed in the flexible printed circuit board 71 is protruded at a predetermined location on the base 81, and the elongated member 83 is also provided at a predetermined location on the back surface of the base 81. A protrusion 84 for fixing to a substrate 86 is provided in a protruding manner.

FIG. 10 is a diagram showing a state in which the terminal portion 7 is attached to the substrate 86, in which FIG. 10A is a plan view and FIG. 10B is a side view.

To assemble the terminal portion 7, as shown in the figure, the terminal pattern portion 75 portion of the flexible printed circuit board 71 is attached onto the elongated projection portion 82.
This attachment method involves inserting the protrusion 83 on the base 81 into the hole 77 of the flexible printed circuit board 71, and heat-crimping the tip of the protrusion 83. As a result, the terminal pattern portion 75 of the flexible printed circuit board 71 is stretched over the elongated protrusion 82 . Furthermore, the terminal pattern section 76 at the other end of the flexible printed circuit board 71
As shown in the figure, it is soldered to a predetermined conductive pattern 87 on a substrate 86. 88 indicates solder.

As shown in FIG. 9b, this substrate 86 is
It is fixed within the operating unit 500 when the operating unit 500 is assembled.

Next, the state of the terminal structure when the operating unit 500 is attached to the recess 11 of the car stereo main body panel 1 will be explained using mainly FIGS. 1 and 5.

First, in order to attach the operating unit 500 to the recess 11 of the car stereo body panel 1, as shown in FIG.
5 to the protrusions 18, 18 on the car stereo body panel 1
(arrow E). At this time, the ground plate 15 is pushed down in the direction of arrow C by the operating unit 500.

Next, by pushing down the engagement protrusion 57 of the operating unit 500 in the direction of arrow D, the engagement protrusion 57 is moved to the stopper mechanism 21 (sixth position) of the car stereo main body 1.
1), the operating unit 500 is attached to the recess 11 of the car stereo main body panel 1, as shown in FIG.

At this time, as shown in FIG.
The terminal portion 7 on the 00 side is crimped to the terminal portion 3 on the car stereo main body 100 side, and each conductive pattern 33 on the terminal portion 3 is connected to each conductive pattern 73 on the corresponding terminal portion 7.

Here, since the elastic member 47 is attached to the terminal part 3 side, even if the terminal part 3 and the terminal part 7 come into contact with each other under pressure, the surface of the terminal part 3 is deformed by the elastic member 47. Therefore, there is almost no wear on the contact portion between the terminal portion 3 and the terminal portion 7.

Note that when the length of the elastic member 47 is long as in this embodiment, undulations may occur on its surface. At this time, if the notch 48 is not provided on the surface of the elastic member 47, the conductive pattern 3 located on the portion recessed by the undulations
3 may cause a connection failure between the conductive pattern 73 and the opposite conductive pattern 73. However, in the present invention, since the notch 48 is provided on the surface of the elastic member 47, even if the elastic member 47
Even if there are undulations on the surface, the plurality of conductive patterns 33 of the terminal portion 3 and the plurality of conductive patterns 73 of the terminal portion 7 are independently and reliably pressed and connected.

Further, since the connection between the terminal portions 3 and 7 is simply surface contact, attachment and detachment are easy.

In order to remove the operating unit 500 from the recess 11, the lever 21a shown in FIG. 6 may be operated to release the engagement with the stopper mechanism 21.

Although one embodiment of the terminal structure of an electronic device according to the present invention has been described above in detail, the present invention is not limited thereto. For example, the elastic member 47 does not necessarily need to be provided on the terminal portion 3 side, The elastic member 47 may be provided on the terminal portion 7 side, or may be provided on both terminal portions 3 and 7. Further, the terminal portion 7 does not necessarily have to be a long member with a convex cross section, but a conductive pattern may be formed directly on the substrate 86, and this conductive pattern itself may be connected to the terminal portion 3 as a terminal portion on the operating unit 500 side. Various modifications are possible.
In other words, at least one of the terminal parts is constructed by fixing an elastic member on a long member and attaching a flexible printed circuit board having a conductive pattern formed on a flexible insulating film onto the elastic member. It can be anything.

Further, in the above embodiment, a case where the terminal structure of the electronic device according to the present invention is used in a car stereo is shown, but the present invention is not limited to this and can be applied to any other electronic device. Any part that electrically connects the main body of the device and the operation unit can be used.

Furthermore, it goes without saying that the operating unit may be any type of electronic component mounted thereon.

Various modifications are possible within the scope of the present invention.

〔Effect of the invention〕

As explained in detail above, according to the electronic device according to the present invention, the notch provided on the operating unit is engaged with the protrusion provided on the main body of the electronic device, and the engaging protrusion provided on the operating unit is engaged with the protrusion provided on the main body of the electronic device. The unique advantage of the present invention is that the operation unit can be easily and reliably attached to and removed from the electronic device body because the operation unit is housed in the recess of the electronic device body by engaging with a stopper mechanism provided on the electronic device body. It has a good effect.

Furthermore, the terminal structure of an electronic device according to the present invention has an excellent effect unique to the present invention in that even if a repeatedly operated unit is attached to and detached from an electronic device body such as a car stereo, the terminal is unlikely to be worn out. .

Further, according to the terminal structure of an electronic device according to the present invention, since the connection between both terminal portions is a mere surface contact, there is an excellent effect unique to the present invention in that attachment and detachment are easy.

Further, according to the terminal structure of an electronic device according to the present invention, since a plurality of notches are provided on the surface of the elastic member for independently placing each conductive pattern portion of the flexible substrate, even if the elastic member A unique advantage of the present invention is that even if the surface is undulated, the multiple conductive patterns on the terminal section of the electronic device body and the multiple conductive patterns on the terminal section of the operating unit are independently and reliably pressed and connected. It has a good effect.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view showing a schematic terminal structure when the operating unit of the car stereo according to the present embodiment is attached to the car stereo main body, and FIG. 2 is a view showing the flexible printed circuit board 31. Figure a is a plan view, Figure b is an enlarged cross-sectional view taken along the line A-A in Figure A, and Figure 3 shows the elongated member 40 and elastic member 47 used in the terminal portion 3 shown in Figure 1. 4A is a plan view, B is a front view, C is a side view, and FIG. 4 is a diagram showing the terminal portion 3,
Figure a is its front view, figure b is its side view, and
The figure is a schematic side cross-sectional view showing the state in which the board 2 on which the terminal part 3 is placed is attached to the car stereo main body panel 1, FIG. 6 is a plan view showing the car stereo main body panel 1, and FIG. Figure 8 is a plan view, Figure b is a back view, Figure C is a side view, and Figure 8 is a flexible printed circuit board 71.
FIG. 9 is a plan view showing the elongated member 80 constituting the terminal portion 7 shown in FIG. 1, where a is a plan view, b is a front view, and c is a side view. , 1st
0 is a diagram showing a state in which the terminal portion 7 is attached to the substrate 86, in which figure a is a plan view and figure b is a side view. In the figure, 100... Car stereo body, 1... Car stereo body panel, 3... Terminal section, 31...
Flexible printed circuit board, 32... Insulating film, 33... Conductive pattern, 40... Long member,
47...Elastic member, 500...Operation unit, 7
... terminal section, 71 ... flexible printed circuit board, 72 ... insulating film, 73 ... conductive pattern, 80 ... long member.

Claims (1)

[Scope of Claims] 1. An electronic device main body and an operating unit detachably attached to the electronic device main body, wherein the electronic device main body is provided with a recessed portion having a size and shape that accommodates the operating unit, A terminal portion with an exposed conductive pattern is provided on the bottom surface of the recessed portion, a projection is provided on both sides of the recessed portion, and a stopper mechanism is provided on the other side of the recessed portion, and a conductive pattern is provided on the bottom surface of the operating unit. In addition to providing an exposed terminal portion, both sides of the operating unit are provided with notches that rotatably engage protrusions provided on the electronic device body, and the other side of the operating unit is provided with a notch that rotatably engages with a protrusion provided on the electronic device body. An engaging protrusion that removably engages with a stopper mechanism provided on the main body is provided, and when the notch of the operating unit is engaged with the protrusion of the electronic device main body, the engaging protrusion of the operating unit is inserted into the stopper mechanism of the electronic device main body. engaging the mechanism to house the operating unit in the recess of the electronic device body;
An electronic device characterized in that, in this state, a terminal portion of the operating unit and a terminal portion of the electronic device main body are brought into pressure contact. 2. The electronic device is equipped with a main body of the electronic device and an operation unit that is detachably attached to the main body of the electronic device, and a plurality of conductive patterns are exposed at predetermined positions on the main body of the electronic device and the operation unit, respectively, so that the operation unit can be connected to the electronic device. Terminal portions are provided to electrically connect the opposing conductive patterns to each other when attached to the main body, and at least one of the two terminal portions has an elastic member fixed on the elongated member. A flexible printed circuit board having a plurality of conductive patterns formed on a flexible insulating film is mounted thereon, and each conductive pattern portion of the flexible circuit board is independently placed on the surface of the elastic member. A notch is provided, and when the operating unit is attached to the electronic device main body, each of the elastic members divided by the notch connects the plurality of conductive patterns of the terminal portion of the electronic device main body and the terminal portion of the operating unit. A terminal structure for an electronic device, characterized in that a plurality of conductive patterns are independently pressure-welded and connected.