JP3076756B2 - Card-shaped electronic device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card-like electronic device, such as a memory card or an IC card, which incorporates, for example, a semiconductor memory and is used for various electronic devices.

[0002]

2. Description of the Related Art Recently, a card-type electronic device of this type is used in various electronic devices as a storage medium for information. FIG. 4 shows a conventional memory card. The memory card includes a resin case main body 21 having a plurality of openings, a metal front panel 23 bonded to the surface of the case main body 21 by an adhesive sheet 22, and an adhesive sheet 24 And a metal back panel 27 bonded to the back surface of the mold panel 21 by an adhesive sheet 26.
And a plurality of semiconductor memories 28 provided on the surface of the printed board 25, and a connector 29 attached to the printed board 25 and connected to the semiconductor memory.

[0003]

The above-mentioned conventional memory card is assembled as follows. First, the adhesive sheet 24 is temporarily pressure-bonded to the back surface of the mold panel 21. Since an adhesive sheet having no tackiness (adhesiveness) is used in consideration of workability, simply placing the adhesive sheet 24 on the mold panel 21 causes the adhesive sheet 24 to be displaced with respect to the mold panel 21. You can't put it on a hot press. For this reason, the adhesive sheet 24 is temporarily pressed to the mold panel 21 by hand and positioned.
Thereafter, the printed board 25 is overlaid on the back surface of the mold panel 21 and applied to a hot press, and the printed board 25 is adhered to the mold panel 21 by the adhesive sheet 24.

[0004] Next, the adhesive sheet 2
6 is temporarily crimped, and then the back panel 27 is
1 and adhesive sheet 2 using a hot press
6, the back panel 27 is bonded to the case body 21. Finally, the adhesive sheet 22 is temporarily pressure-bonded to the surface of the case main body 21, and thereafter, the front panel 23 is superimposed on the case main body 21, and the front panel 23 is attached to the case main body 21 by the adhesive sheet 22 using a hot press. Glue.

As described above, the conventional card-shaped electronic device has a large number of components and also uses a hot press to perform the bonding operation. It was time-consuming and required a lot of man-hours for assembly. Also, in the case of assembling using an adhesive such as an adhesive sheet, the adhesive portion may be peeled off depending on the use condition of the card-shaped electronic device.
When the sheet for bonding the case body and the printed board is peeled off, it does not affect the semiconductor memory or the like, but an unnecessary external force is applied to the connector or the printed board, so that the connector or the printed board may not be used for a long time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to reduce the number of parts and the number of assembling steps, and to withstand long-term use. It is intended to provide a card-like electronic device that can be obtained.

[0007]

A card-like electronic device according to the present invention has a first surface having four sides, a second surface having four sides opposed to the first surface, and a first surface having four sides. A receiving portion formed by two opposing side surfaces that connect mutually parallel sides of the surface, and a remaining portion orthogonal to the side surfaces is opened to form first and second openings; A first engagement portion provided on each of the two side surfaces located at the first opening; and a second engagement portion provided on the first surface.
And a case main body having an engaging portion, the electronic component is accommodated in the accommodation portion from the second opening side, an electronic component is arranged on a surface, and the one side portion is connected to the electronic component, and the inside of the accommodation portion is A printed circuit board to which a connector whose both ends are in contact with the first engagement portion in the housed state is attached, and both ends of the connector are housed in the housing from the second opening side. And both ends of the connector are connected to the first
A stopper member having a pressing portion that presses in the direction of the engaging portion, and a third engaging portion that is engaged with the second engaging portion and that retains and holds the printed circuit board with respect to the housing portion. have.

Further, the card-like electronic device of the present invention is molded into a card shape, penetrates from one side to the other side, a first opening is formed in the one side, and the other side is formed. A case body having a second opening formed therein and having a housing provided with engagement portions on both sides of the first opening; and a case body housed in the housing from the second opening side, An electronic component is disposed, a printed circuit board having a connector attached to one side surface thereof and a connector that is connected to the electronic component and whose both ends are in contact with the engagement portion in a state housed in the housing portion, and inside the housing portion. A pressing portion that is received from the second opening side and locked to the case body, abuts against both ends of the connector, and presses both ends of the connector in the direction of the engaging portion; Printed circuit board is retained against the storage section And a stopper member that.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a case where the present invention is applied to a memory card. The memory card 10 includes a resin case body 11, a printed board 12, a resin stopper member 13, and a topsheet 1.
4, the back sheet 15. A semiconductor memory 16 is mounted on the surface of the printed board 12, and a connector 17 connected to the semiconductor memory 16 is provided on one side surface.
Is provided.

The case body 11 is molded from a resin.
2, and a housing portion 11a for housing the stopper member 13 is provided. That is, the case body 11 has a front surface portion to which the top sheet 14 is bonded, a back surface to which the back sheet 15 is bonded, and two side surfaces connecting these front and back surfaces. The housing part 11a is provided in the case body 1
Is penetrated from one end to the other end, the first opening 11 ₁ is formed on the one end, a second opening 11 at the other end ₂
Are formed. The first as the inside of the opening 11 ₁ 2, the engaging portions 11b, 11c are provided,
On the surface of the case body 11 located in a second vicinity of the opening 11 _2, as shown in FIG. 1, the engaging holes 11d, 11e are provided. One end of the case body 11 is a portion where the memory card is mounted on an electronic device (not shown).

The width of the connector 17 is the same as that of the printed circuit board 12.
And the thickness is larger than the thickness of the printed board 12. Therefore, the connector 17 protrudes from the surface of the printed circuit board 12. At both ends of the connector 17, locking portions 17a and 17b are provided. These locking portions 17a, 17b are in contact with the engaging portions 11b, 11c provided inside the case body 11 in a state where the printed board 12 is inserted into the housing portion 11a. 2. Defined as shown in FIG.

As shown in FIG. 1, the stopper member 13 has a thick first portion 13a and a thin second portion 13a.
13b. The length of the second portion 13b is slightly longer than the length of the printed circuit board 12. A stopper member 13 is attached to the first portion 13a of the case body 1.
When the locking hole 11 is accommodated in the accommodation portion 11a,
locking projections 13c and 13d locked to the case body 11 to lock the stopper member 13 with the case body 11;
When the stopper member 13 is housed in the case body 11,
Cover 1 for closing _second opening 112 of accommodation portion 11a
3e is provided.

The second portion 13b is provided with legs 13f and 13g separated by a predetermined distance. The legs 13f and 13g connect the stopper member 13 to the case body 11.
Is accommodated in the accommodating portion 11 a of the printed circuit board 12. Pressing portions 13h and 13i are provided at the distal ends of the legs 13f and 13g to be in contact with both ends of the connector 17, respectively. Further, the leg 13
A spacer 131 is provided between f and 13g via a plurality of thin link portions 13k. The spacer 131 prevents the surface of the case body 11 from bending when the number of semiconductor memory chips mounted on the surface of the printed board 12 is small. When the number of semiconductor memory chips mounted on the surface of the printed circuit board 12 is large, the spacer 13l is removed by folding the link 13k.

The top sheet 14 and the back sheet 15 are
Each of the decorative sheets has a tacky adhesive applied to its back surface. The memory card having the above configuration is assembled as follows. That is, first, the semiconductor memory 1
6 and the connector 17 is inserted a second from the opening 11 ₂ in the mounted printed board 12 to the housing portion 11a of the case body 11. In this state, it is inserted from the stopper member 13 and the second opening 11 ₂ in the housing section 11a and locking projections 13c of the stopper member 13, the 13d, as shown in FIG. 2, locking holes of the case body 11 Lock to 11d, 11e. Thereafter, the top sheet 14 and the back sheet 15 are bonded to the front and back surfaces of the case body 11, respectively, to complete the process.

According to the above embodiment, the front and back surfaces and the two side surfaces connecting the front and back surfaces are integrally molded, and the case main body has the accommodating portion 11a defined by the front, back and side surfaces. By using the memory card 11, the memory card including the case main body 11, the printed board 12, the stopper member 13, the front surface, the back sheet 14,
It can be made up of only 15 parts, fifteen.
Therefore, the number of parts can be reduced as compared with the related art.

Further, the printed board 12, the stopper member 1
3 is inserted into the accommodating portion 11a of the case main body 11, and the assembly is completed only by bonding the top sheet 14 and the back sheet 15, so that the number of assembling steps can be significantly reduced as compared with the related art. In addition, since an adhesive sheet for adhering each component is not used unlike the related art, there is no problem of peeling due to the use environment, and the device can withstand long-term use. Further, since no adhesive sheet is used, a hot press is not required, and equipment costs can be reduced.

The stopper member 13 is configured such that the pressing portions 13h and 13i are connected to both ends of the connector 17 in a state where the second portion 13b is slightly longer than the length of the printed circuit board 12 and the stopper member 13 is housed in the housing portion 11a. Contacting the department. Therefore, when the memory card is mounted on the electronic device, the force applied to the connector 17 is received by the stopper member 13 and therefore does not reach the printed board 12. Further, when the memory card is removed from the electronic device, the engaging portions 11b and 11c of the case main body 11 abut on both ends of the connector 17, so that the force applied to the connector 17 does not reach the printed circuit board 12. As described above, since the force applied to the connector 17 when the memory card is mounted on the electronic device or when the memory card is removed from the electronic device does not reach the printed board 12, the printed board 12 can be prevented from being deformed or damaged.

Although the above embodiment has described the case where the present invention is applied to a memory card, the present invention can be applied to an IC card. Of course, various modifications can be made without departing from the scope of the present invention.

[0019]

As described in detail above, according to the present invention, it is possible to provide a card-shaped electronic device which can reduce the number of parts and the number of assembling steps, and can withstand long-term use.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view showing the embodiment of the present invention.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is an exploded perspective view showing a configuration of a conventional card-shaped electronic device.

[Description of Signs] 10 ... Memory card, 11 ... Case body, 11a ... Accommodation part, 11b, 11c ... Engagement part, 11d, 11e ... Lock hole, 11 ₁ , 11 ₂ ... First and second opening parts Reference numeral 12: printed circuit board, 13: stopper member, 13a, 13b: first and second portions, 13c, 13d: locking projection, 13f, 13g: leg portion, 13h, 13i: pressing portion, 14: surface sheet, 15: Back sheet, 16: Semiconductor memory, 17: Connector, 17a, 17b: Locking portion.

Claims (2)

(57) [Claims] 1. A first surface having four sides, a second surface having four sides opposed thereto, and a first surface and a second surface.
A receiving portion formed by two opposing side surfaces that connect mutually parallel sides of the surface, and a remaining portion orthogonal to the side surfaces is opened to form first and second openings; A case main body having a first engagement portion provided on each of the two side surfaces located at one opening, and a second engagement portion provided on the first surface; An electronic component is disposed on the surface of the second opening, the electronic component is disposed on the surface, the electronic component is connected to one side surface, and both ends of the first engaging portion are accommodated in the receiving portion. A printed circuit board having a connector attached thereto, the connector being accommodated in the accommodation portion from the second opening side, and being in contact with both ends of the connector, and attaching both ends of the connector to the first connector . A pressing portion for pressing in the direction of the engaging portion; Card-like electronic device characterized by comprising a stopper member and a third engagement portion for holding retaining the print substrate relative to the housing portion. 2. Molded into a card shape, penetrated from one side to the other side, a first opening is formed on said one side, and a second opening is formed on the other side, A case body having an accommodating portion provided with engagement portions on both sides of the first opening; an electronic component disposed on the surface, accommodated in the accommodating portion from the second opening side; A printed circuit board having a connector connected to the electronic component and having both ends abutting on the engagement portion in a state of being housed in the housing, and housed in the housing from the side of the second opening; The connector has a pressing portion that is locked to the case body, abuts against both ends of the connector, and presses both ends of the connector in the direction of the engaging portion. Having a stopper member for retaining and retaining Card-shaped electronic device according to claim.