JP2020098525A - Electronic apparatus - Google Patents

Abstract

To provide an electronic apparatus capable of reducing defective products by preventing the occurrence of damage such as cracking in an expansion card guide and reducing the man-hour of assembly.SOLUTION: An electronic apparatus 1 comprises: a housing 3 including a plate-like portion that comprises a connector 4b as a connection terminal to which an expansion card 2 as a card-type electronic apparatus is inserted and connected; and a pair of guide parts 3f which are integrally formed with the housing and guide a side face of the expansion card in a movement route direction of the expansion card. The pair of guide parts are composed of division guide parts 3f1L to 3f3R which are a plurality of pairs of guide bodies divided in a width direction of a movement route crossing the movement route direction of the expansion card.SELECTED DRAWING: Figure 3

Description

The present invention relates to an electronic device in which an expansion card is mounted, and relates to a casing structure for guiding the expansion card.

The expansion card includes a PC card (PC Card) and an express card (Express card) according to the standard of PCMCIA (Personal Computer Memory Card International Association), and is known as a card-like device for expanding the function of an electronic device to be mounted. ing.

An electronic device to which an expansion card can be attached has a card slot for accommodating the card. A connector for connecting to a terminal provided on the PC card is arranged in the card slot. The expansion card is mounted by inserting the tip portion provided with the card terminal into the card slot and electrically connecting the card terminal to the connector.

In Patent Document 1, a pair of guide members for guiding the inserted PC card are arranged inside the mobile terminal, and the guide members form a protrusion in conformity with the shape of the PC card, so that they are integrated with the housing. The prior art that has been developed is described.

Patent Document 2 describes a conventional technique in which a guide for guiding the insertion/removal of a card is provided on the bottom surface of a small electronic device.

JP 10-302892 A JP 11-095870 A

When a guide for a PC card is provided in a molded housing of a conventional electronic device, there are restrictions in manufacturing a mold for injection molding when manufacturing the molded housing, and it is difficult to maintain the guide shape. There was a problem that sometimes.

For example, when a molded housing having an undercut shape as shown in FIG. 1 is molded by a mold device using a tilted rod and a tilted core as shown in FIG. The eating power of can be greater than you might imagine.

As shown in FIG. 2A, the fixed side mold member and the movable side mold member are clamped, and the inside of the cavity formed between the fixed side mold member, the movable side mold member 2 and the inclined core. A molten resin is poured into the container through a gate (not shown) to solidify the filled resin. After that, the movable side mold member is opened from the fixed side mold member to expose the molded case (FIG. 2B), and the inclined case and the extrusion pin project the molded case (FIG. 2C). The tilting rod is driven by the tilting rod to move the tilting core in the direction away from the guide of the molded housing (leftward in the drawing). As the tilting core moves, the tilting core is indicated by a broken line in FIG. The guide leg of the molded housing comes out of the inclined core while the guide leg part with the parallel protrusion is displaced inward from the assumed position, where a long undercut is formed between the parallel protrusion shape part of the guide and the housing. In the case where the guide legs are inserted, a force in the left direction in the drawing is applied to the guide legs to cause distortion, and cracks are likely to occur at the roots of the guide legs, which may result in product failure.

Further, the expansion card is becoming smaller as the standard becomes newer, and in the case of the Express card standard, the width dimension of the card is much smaller than the conventional PC card standard, so that it cannot be formed by the conventional guide structure. There was a problem that sometimes.

Therefore, the present invention has been made in view of the above points, and to prevent the occurrence of damage such as cracks in the expansion card guide, reduce product defects, to provide an electronic device that can reduce the number of assembly steps. To aim.

The electronic device of the present invention includes a plate-shaped portion having a plate surface that supports a connection terminal to which a device terminal of a card-type electronic device can be connected,
The card-shaped portion is integrally molded with the plate-shaped portion and protrudes from the plate surface so as to face each other across the movement path of the card-type electronic device when connecting the device terminal to the connection terminal. And a plurality of pairs of guide bodies that are separated from each other in the direction along the movement path of the electronic device and that guide the card-type electronic device.

In other words, the electronic device of the present invention includes a housing including a plate-shaped portion including a connector that is a connection terminal to which an expansion card that is a card-type electronic device is inserted and connected,
An electronic device that is integrally molded with the housing and has a pair of guide portions that guide the side surface of the expansion card in the movement path direction of the expansion card, and that is used by mounting the expansion card.
The pair of guide portions are composed of a plurality of pairs of divided guide portions that are divided in the width direction of the movement path intersecting the movement path direction of the expansion card.

According to the present invention, even if the guide structure is a divided guide structure in which the shape is changed from that of the conventional guide structure, the original guide function is not impaired, product defects can be reduced, and the effect of reducing the number of assembling steps can be obtained.

It is a perspective view showing a molding case explaining a solution subject of the present invention. FIG. 6 is a partial cross-sectional view of a mold device that uses a tilted rod and a tilted core for injection-molding a molding case, which describes the problem to be solved by the present invention. It is a perspective view which shows the electronic device which concerns on the 1st Example of this invention. FIG. 4 is a partial sectional view taken along the line AA in FIG. 3. 4 is a partial cross-sectional view taken along the line BB in FIG. 3. FIG. 3 is a partial cross-sectional view illustrating the definition of the dimensions of each part of the split guide part and the connector of the electronic device according to the first example of the present invention. FIG. 6 is a partial cross-sectional view illustrating the definition of the tilt angle of the card and the position of the tip of the card when the wireless card is inserted into the electronic device according to the first embodiment of the present invention from the housing introduction port. It is an image figure explaining operation|movement when connecting a wireless card to a connector from the housing|casing outer side to the electronic device which concerns on the 1st Example of this invention. It is an image figure explaining operation|movement when connecting a wireless card to a connector from the housing|casing outer side to the electronic device which concerns on the 1st Example of this invention. It is an image figure explaining operation|movement when connecting a wireless card to a connector from the housing|casing outer side to the electronic device which concerns on the 1st Example of this invention. FIG. 7 is a partial cross-sectional view taken longitudinally in the electronic device according to the second embodiment of the present invention. FIG. 9 is a partial cross-sectional view taken longitudinally in the electronic device according to the third embodiment of the present invention.

An electronic device according to an embodiment of the present invention will be described below. In the following description and the accompanying drawings, substantially the same or equivalent parts will be denoted by the same reference symbols, without redundant description. Further, for convenience of description, the front side is determined as shown in the figure, the opposite is defined as the rear side, and the left, right, upper and lower sides as viewed from the front side are defined as the left side (L), the right side (R), the upper side and the lower side, respectively. explain.

(Description of configuration)
3 to 5 show a housing 3 that also serves as a guide function for the wireless card 2 in the electronic device 1 of the first embodiment. The housing 3 of the electronic device 1 according to this embodiment has a substantially rectangular parallelepiped appearance. As shown in the figure, the printed circuit board 4 on which various electronic components are mounted is built in the housing 3. However, in order to simplify the description, electronic components and cables between the electronic components are omitted. Showing. Further, switches such as an operation panel on the exterior of the housing 3 are omitted.

A printed circuit board 4 having a connector 4b for connecting the wireless card 2 is fixed and housed inside the housing 3 on an inner wall (not shown) of the housing 3. The printed circuit board 4 is arranged in parallel with the front and rear surfaces of the housing 3, and a wireless card introduction port 3e (slot) is provided on the upper side surface of the housing 3 in parallel with the printed circuit board 4. A card guide 3f for connecting a wireless card is installed upright from the slot 3e to the connector 4b of the printed circuit board 4 so as to sandwich the moving path. Although not shown, the device terminal of the wireless card 2 at the lower end can be connected to the connector 4b.

The card guide 3f, which is a pair of guide portions, needs to have a predetermined length for the guide length and a space between the guides due to restrictions in mold production, and thus the divided guide portions (guide bodies) divided into three pairs, It is provided as a first pair 3f1L-3f1R, a second pair 3f2L-3f2R, and a third pair 3f3L-3f3R.

The pair of divided guide portions of each divided guide portion has a bilaterally symmetrical shape with respect to the central axis of the guide portion. Each pair of divided guide portions includes a guide surface that is arranged in parallel in the width direction of the movement path so as to face each other at a predetermined distance, and a protruding wall that protrudes from the guide surface so as to face each other in the width direction of the movement path. , Are provided. Each pair of split guide portions are separated from each other in the direction along the movement path. Further, each pair of split guide portions is integrally molded in a state of standing up from the plate-shaped portion (rear surface) of the housing 3, and is provided with legs having a predetermined height from the plate-shaped portion.

In order to improve the guide function of the wireless card 2, each pair of the three divided guide portions has its shape opened to the card introduction port 3e side (upper side), that is, to the insertion side along the card moving path direction. It is preferable to have an inclined tapered surface T. The taper surface T is configured to suppress the front-back and left-right movement of the wireless card 2 and guide it to the subsequent guide surface.

Although not shown in FIG. 4 and FIG. 3 and FIG. 5, the front-back movement of the wireless card 2 is suppressed between the card introduction port 3e and the first pair 3f1L-3f1R, and the first pair 3f1L- A lid member 3G which is guided to 3f1R and is biased from the front to the rear by a torsion spring on the peripheral edge of the card introduction port 3e, and is erected from the housing 3 (rear surface) and tilted toward the card introduction port 3e side (upper side). It is preferable to provide the auxiliary guide portion 3H that does not block the movement path.

FIG. 6 is a partial cross-sectional view of the electronic device in which the dimensions of the division guide portion and the connector are defined.

The width W of the wireless card 2 conforming to the Express card standard is 34 mm from the standard.

The width dimension of the housing opening of the card inlet 3e is X0 (corresponding to the width of the wireless card 2), one end thereof is the reference point S0, the width dimension inside the housing of the card inlet 3e is X1, and the reference point is S1 ( S0 and the symmetrical side).

The upper end width dimension (the upper end of the tapered surface T) of the first pair of division guide portions 3f1L and 3f1R is X2, the lower end width dimension is X3, and the reference points thereof are the upper end S2 and the lower end S3.

The upper end width dimension of the second pair of divided guide portions 3f2L and 3f2R is X4 (the upper end of the tapered surface T), the lower end width dimension (the lower end of the guide surface) is X5, and the reference points thereof are the upper end S4 and the lower end S5.

The upper end width dimension of the third pair of divided guide portions 3f3L and 3f3R is X6 (the upper end of the tapered surface T), the lower end width dimension is X7 (the lower end of the guide surface), and the reference points thereof are the upper end S6 and the lower end S7. Further, the slot width dimension of the connector 4b is X8, and its reference point is the upper end S8.

Also in the card insertion direction, the vertical dimension from the reference point S0 to the inner surface of the housing is Y1, the vertical dimension to the upper end of the first pair of split guide portions 3f1 is Y2, the vertical dimension to the lower end is Y3, and the second pair of split guides. Y4 is defined up to the upper end of the portion 3f2, Y5 is defined up to the lower end, Y6 is defined up to the upper end of the third pair of division guide portions 3f3, and Y7 is defined up to the lower end. The vertical dimension up to the upper end S8 of the connector 4b is defined as Y8.

The guide lengths of the divided guide portions 3f2L, 3f2R, 3f3L, and 3f3R can be set according to the separation distance of the pair. In the space of the separation distance between the first pair 3f1L-3f1R and the second pair 3f2L-3f2R, which are divided and separated from each other in the direction along the card moving path, for example, a tilt rod and a tilt as shown in FIG. When molding the first pair and the second pair with a mold apparatus using a core, a tilt rod offset from the tilt core can be arranged. The separation distance between the first pair 3f1L-3f1R and the second pair 3f2L-3f2R and each guide length can be set according to the diameter of the tilt rod.

The resin material for integrally molding the housing 3 may be formed using an engineering plastic such as ABS (acrylonitrile butadiene styrene), ASA (acrylate styrene acrylonitrile), AES (acrylonitrile ethylene-propylene-diene styrene). .. Moreover, a part of the housing 3 may be formed using a metal material.

(Explanation of operation)
FIG. 7 is a partial cross-sectional view of the electronic device in which the tilt angle of the card and the tip position of the card when the wireless card is inserted through the housing introduction port are defined.

As the position dimension of the wireless card tip point n when the central axis of the wireless card 2 is inserted at an angle θn with respect to the central axis of the guide portion, the horizontal dimension from the center of the card inlet 3e to the wireless card tip point n is Xn. /2 and the vertical dimension from the reference point S0 to the wireless card tip point n is defined as Yn.

With the above definition, the relationship between the respective dimensions can be expressed by the following equation using the width dimension X0 of the card introduction port 3e.
Xn/2+X0/2=W/cos θn+Yn·tan θn
Since W=34, the above equation becomes
(Xn+X0)/2=34/cos θn+Yn·tan θn
It can be expressed as.

8, 9 and 10 are operation images when the wireless card is connected to the connector from the outside of the housing.

When the wireless card 2 is inserted from the card introduction port 3e, the card angles passing through the reference point S0 and the reference points S1 to S8 are set to θ1 to θ8.

First, as shown in FIG. 8, when the first pair of split guide portions 3f1L passes, they may be inserted at an angle of θ1 to θ3. Therefore, in order for the split guide portions 3f1L to have a guide function, X2>X1>. It is necessary that X3 and θ2>θ1>θ3.

Next, as shown in FIG. 9, when the wireless card 2 passes through the second pair of split guide portions 3f2L, it may tilt from θ3 to θ5. Therefore, in order for the split guide portion 3f2L to have a guide function, X4 is required. >X3>X5 and θ4>θ3>θ5.

Next, as shown in FIG. 10, even when passing through the third pair of division guide portions 3f3L, the division guide portions 3f3L may be inclined from θ5 to θ7. Therefore, in order for the division guide portions 3f3L to have a guide function, X6>X5> It is necessary that X7 and θ6>θ5>θ7.

Finally, in order for the wireless card 2 to be inserted into the connector 4b, it is necessary that X8>X7>W and θ8>θ7.

As described above, the following (1) to (5), which can be manufactured by a mold for injection molding, in a device in which a printed circuit board is mounted inside
(Xn+X0)/2=34/cos θn+Yn·tan θn (n=1 to 8) (1)
X2>X1>X3 and θ2>θ1>θ3 (2)
X4>X3>X5 and θ4>θ3>θ5 (3)
X6>X5>X7 and θ6>θ5>θ7 (4)
X8>X7>W and θ8>θ7 (5)
By satisfying the condition, a card guide structure in which a wireless card (compliant with Express card standard) can be inserted is achieved, and the wireless card 2 can be easily connected to the connector 4b.

(Explanation of effect)
As described above, according to the first embodiment, even if the guide structure is divided from the conventional one by changing the shape according to the constraint on the mold, the original guide function is not impaired, and the injection molding is performed. In this case, it is possible to reduce the biting force of the card guide 3f portion of the molded housing with respect to the inclined core for the split guide portion and prevent the deformation of each pair, and at the same time, the housing 3 itself on which the printed circuit board is mounted guides the card. Since 3f can be formed, the effect of reducing the number of members and the number of assembling steps can be expected.

(Description of configuration)
FIG. 11 is a cross-sectional view of the electronic device casing of the second embodiment. In this embodiment, the rear surface of the printed circuit board 4 guides the main surface (front surface) of the wireless card 2 without providing a protruding wall including the front tapered surface T in each pair of the split guide portions of the first embodiment. It is the same as the first embodiment except that it is configured as an additional guide portion. In this case, it is preferable that the rear surface of the printed circuit board 4 be insulated.

(Explanation of effect)
According to this embodiment, the same effect as that of the first embodiment can be obtained, and since the front protruding wall is not provided, the card guide 3f portion of the molding housing with respect to the inclined core for the split guide portion at the time of injection molding. Since it is possible to further reduce the biting force of each pair, prevention of deformation of each pair can be expected more than in the first embodiment. Furthermore, it can contribute to the reduction in thickness of the entire device.

(Description of configuration)
FIG. 12 is a cross-sectional view of the electronic device casing of the third embodiment. In the present embodiment, the tapered surfaces T in each pair of the split guide portions of the first embodiment are not provided, the protruding walls are all parallel walls, and the first pair 3f1L-3f1R having an F-shaped cross section, 2 to 3f2L to 3f2R and 3 to 3f3L to 3f3R, except that an integrally formed rectangular tube passage 3GG for suppressing and guiding the forward and backward movement of the wireless card 2 is provided at the peripheral edge of the card inlet 3e. , The same as in the first embodiment. In FIG. 12, only the first pair of 3f1L, the second pair of 3f2L, and the third pair of 3f3L are shown. The shape of the through hole of the rectangular tube passage 3GG is configured so that the wireless card 2 can be loosely fitted therein.

(Explanation of effect)
According to this embodiment, the same effect as that of the first embodiment can be obtained to some extent, and the F-shaped card guide 3f having a simple cross-sectional shape can be formed.

DESCRIPTION OF SYMBOLS 1 Electronic equipment 2 Wireless card 3 Housing 4 Printed circuit board 4b Connector 3f1L-3f1R 1st pair of division guide parts 3f2L-3f2R 2nd pair of division guide parts 3f3L-3f3R 3rd pair of division guide parts

Claims (6)

A plate-shaped portion having a plate surface that supports a connection terminal capable of connecting a device terminal of a card-type electronic device,
The card-shaped portion is integrally molded with the plate-shaped portion and protrudes from the plate surface so as to face each other across the movement path of the card-type electronic device when connecting the device terminal to the connection terminal. A plurality of pairs of guide bodies that are separated from each other in the direction along the movement path of the electronic device, and that guide the card-type electronic device,
An electronic device comprising: Each pair of the plurality of pairs of guide bodies faces a guide surface that is arranged in parallel in the width direction of the movement path so as to face each other with a predetermined distance therebetween, and faces each other in the width direction of the movement path from the guide surface. And a projecting wall projecting,
The electronic device according to claim 1, wherein: Each pair of the plurality of pairs of guide bodies is integrally molded with the plate-shaped portion in a state of standing up from the plate-shaped portion, and includes a leg portion having a predetermined height from the plate-shaped portion. The electronic device according to claim 1 or 2. 4. Each pair of the plurality of pairs of guide bodies is provided with a taper surface that is inclined toward the insertion side along the movement path direction of the card-type electronic device. The electronic device according to the item. The electronic device according to claim 1, wherein the connection terminal is provided on a printed circuit board held by a casing including the plate-shaped portion. The printed circuit board functions as an additional guide unit that guides the card-type electronic device,
The electronic device according to claim 5, wherein:

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