JP2009081606A - Portable terminal with card connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal with a card connector thinned and not transferring a force applied to an upper surface cover to a housing of the card connector in order to prevent crack at the connecting part of the solder, for example, connecting the card connector and a printed circuit, and also to prevent peeling of the entire part of card connector from the printed circuit board. <P>SOLUTION: A case of the portable terminal with a card connector is integrally constituted by stacking at least a first case 2a and a second case 2b. The card connector is constituted to have a separable housing 9 and upper surface cover 10. The housing 9 of the card connector is fixed to a printed circuit board 8 loaded to the first case 2a, and the upper surface cover 10 of the card connector is integrally fixed to the second case 2b. Accordingly, when the first case 2a and the second case 2b are stacked, one card connector is formed with the housing 9 and the upper surface cover 10 provided opposite each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a portable terminal device with a card connector that can be mounted with a card-type recording medium such as a UIM card (User Identity Module Card) or an SD memory card (Secure Digital Memory Card), and particularly lowers the height of the card connector portion. The present invention relates to a portable terminal device with a card connector.

  For example, a third-generation mobile phone can be equipped with a UIM card in which information related to a mobile communication service subscriber is recorded, an SD card capable of recording voice information, image information, text information, and the like. Therefore, a UIM card connector or an SD card connector is mounted on the printed circuit board of the mobile phone, and a rectangular window is opened in the mobile phone casing so that the UIM card or SD card can be inserted from the outside of the mobile phone. ing.

In the conventional card connector, as shown in FIG. 12, the upper surface portion 110a is molded integrally with the base portion 110b and the lower surface portion 110c from a synthetic resin, the connector contact portion 111 is provided inside, and the card 120 is placed in the direction of arrow B. When the card is stored in the card, the card contact part 121 comes into contact. However, these card connectors are strongly required to have a low profile in order to reduce the thickness of a small electronic device such as a mobile phone. As shown in FIG. It became a problem to reduce the height H1 from the substrate 130. Therefore, for example, as shown in FIG. 14, it is proposed that the upper surface portion of the card connector 140 is a sheet metal cover 141 and the sheet metal cover 141 is incorporated in the base portion 140b to reduce the height from the printed circuit board 130 to H2. Has been. (For example, refer to Patent Document 1). In addition, the sheet metal cover has a higher mechanical strength per unit thickness than the base made of synthetic resin, so it can be made thinner, and it can be bent to absorb the force applied to the card. It has been proposed (see, for example, Patent Document 2). And in order to implement | achieve ultimate height reduction, the card connector structure which did not provide a cover on an upper surface but fitted the metal shell to the housing is also proposed (for example, refer patent document 3).
JP 2003-109694 A Japanese Patent Laid-Open No. 2003-22870 JP 2002-329553 A

  However, the above-mentioned card connector has a sheet metal cover on the top surface, but the sheet metal cover is fixed to a housing which is a base part, and is configured as a single card connector, and the single card connector is printed on a small electronic device. It is mounted on the board.

  For this reason, if the card insertion direction is not appropriate, for example, the card insertion direction is oblique to the original insertion direction, the card insertion force directly acts on the card connector cover of the card connector. For this reason, the insertion force is transmitted from the sheet metal cover to the housing, which is the base part, and there is a crack in the connecting part such as solder that connects the housing and the printed circuit board. It can happen. Therefore, with respect to the card connector, it has been proposed to make the cross section of the sheet metal cover into a U shape in order to increase the mechanical strength.

  The present invention reduces the height of the card connector, and even if a force is applied to the sheet metal cover when the card is inserted, a connecting portion such as solder that connects the card connector and the printed circuit board due to the insertion force It is an object of the present invention to realize a mobile terminal device with a card connector that is difficult to crack or to be peeled off from the printed board together with the card connector.

  The present invention relates to a portable terminal device with a card connector, wherein the top cover of the card connector is a sheet metal cover, and the portable terminal device with a card connector is integrated with the first casing and the second casing. As for the card connector, the housing and the top cover can be separated from each other, the card connector housing is fixed on the printed circuit board mounted on the first housing, and the top cover of the card connector is attached to the second housing. When the first housing and the second housing are stacked, the housing and the upper surface cover face each other to form one card connector.

  With this configuration, in the state in which the first casing and the second casing are overlapped and integrated, the housing and the top cover face each other to form one card connector. It is fixed on a printed circuit board mounted on the body, and the upper surface cover is fixed to the second casing. That is, the top cover and the housing form a single card connector but are mechanically separated. Therefore, even if a force acts on the top cover when inserting the card, the force acting on the top cover is transmitted to the second housing that fixes the top cover and is mounted on the first housing. It is not transmitted to the housing fixed on the printed circuit board.

  This prevents cracks in the connecting portion such as solder connecting the card connector and the printed circuit board due to the force for inserting the card, and prevents the card connector from being peeled off from the printed circuit board.

  The present invention connects a card connector and a printed circuit board with respect to a portable terminal device with a card connector while reducing the height of the card connector and not transmitting the force acting on the upper surface cover to the housing of the card connector. This has the effect of preventing cracks in the connection part such as solder or peeling from the printed circuit board together with the card connector.

(Embodiment 1)
A mobile phone will be described as an example of the mobile terminal device with a card connector according to Embodiment 1 of the present invention. Although a foldable mobile phone will be described here as a mobile phone, the present invention can also be applied to a so-called straight type mobile phone.

  FIG. 1 shows an external perspective view of mobile phone 100 according to Embodiment 1 of the present invention. The cellular phone 100 is configured by connecting an upper housing 1 and a lower housing 2 so as to be foldable by a hinge portion 3. The upper housing 1 is provided with a display unit 4, and the lower housing 2 is provided with an operation unit 5 such as a numeric keypad. The lower housing 2 is further provided with an SD card storage 6 on the left side and a UIM card storage 7 on the lower side. The SD card storage unit 6 and the UIM card storage unit 7 have rectangular openings 6a and 7a, respectively, and an SD card or UIM card is inserted through the openings 6a and 7a and held in contact with the internal connection terminals. I am doing so. Hereinafter, although the embodiment in the SD card storage unit 6 will be described, the UIM card storage unit 7 can be similarly implemented.

  FIG. 2 shows a left side view when the cellular phone 100 is folded. Normally, as shown in FIG. 2 (a), the upper housing 1 is used with the lower housing 2 down, but here, for easy understanding of the present invention, as shown in FIG. 2 (b). Description will be made by paying attention to the lower casing 2 when the top and bottom are reversed. That is, the lower housing 2 when the top and bottom are reversed is shown in FIG.

  In FIG.2 (c), the lower housing | casing 2 is combining the 1st housing | casing 2a and the 2nd housing | casing 2b which are each made from a synthetic resin up and down, and comprises one housing | casing. There is an opening 6a on the side surface of the second housing 2, and the SD card storage unit 6 can be seen.

  FIG. 3A is an exploded sectional view of the lower housing 2. The first housing 2a is at the bottom of FIG. 3A, and the second housing 2b is at the top. A printed circuit board 8 is provided on the first housing 2a, a connector housing 9 is provided thereon, and a sheet metal cover 10 serving as an upper surface cover is provided thereon. Holding portions 10 a and 10 a having a substantially U-shaped cross section are formed at both left and right ends of the sheet metal cover 10. Further, holding projections 11a and 11a are formed on the inner surface of the second housing 2b, and the holding portions 10a and 10a of the sheet metal cover 10 are fixed by being fitted.

  These parts are separately attached to the first housing 2a and the second housing 2b as shown in FIG. That is, the connector housing 9 is mounted on the printed circuit board 8, fixed in a reflow furnace with solder, and then attached to the first housing 2 a together with the printed circuit board 8. Further, the sheet metal cover 10 is fixed by fitting the holding portions 10a and 10a to the holding projections 11a and 11a of the second housing 2b. In this way, the connector housing 9 and the sheet metal cover 10 that are originally card connector components are separately fixed to the first casing 2a and the second casing 2b of the lower casing.

  FIG. 4 shows an external view of the sheet metal cover 10. A card insertion direction mark 10 d is stamped on the surface of the sheet metal cover 10. In addition, grip portions 10 a and 10 a having a substantially U-shaped cross section are provided at both ends of the sheet metal cover 10. In the back of the drawing, pressing portions 10b and 10b and retaining ribs 10c and 10c are provided.

  FIG. 5 shows the correspondence between one end of the sheet metal cover 10 and one holding projection 11a of the second housing 2b. FIG. 5 shows a state in which the gripping portion 10a, the pressing portion 10b, and the retaining rib 10c that are substantially U-shaped appear to overlap each other. The holding projection 11 a of the second housing 2 b is fitted into the grip 10 a of the sheet metal cover 10. The width B1 in the vicinity of the tip of the substantially U-shaped cross section of the grip portion 10a is narrower than the thickness B2 of the holding projection 11a of the second housing 2b. When the gripping portion 10a is fitted into the holding projection 11a of the second housing 2b, the gripping portion 10a is spread out as shown in FIG. Since the sheet metal cover 10 is made of a thin stainless steel plate having a spring property, the sheet metal cover 10 is held by the holding projection 11a by the restoring force of the gripping portion 10a. Also, as shown in FIG. 6B, where the pressing portion 10b and the retaining rib 10c are provided, the lower end of the holding projection 11a of the second housing 2b hits the pressing portion 10b and stops. The retaining rib 10c is intended to prevent the retaining rib 10c from being caught in a recess provided in the holding projection 11a.

  FIG. 7A shows a cross-sectional view when the first casing 2a and the second casing 2b of the lower casing are combined. By combining the first housing 2a and the second housing 2b, the connector housing 9 and the sheet metal cover 10 are pressed together to form one card connector. The connector housing 9 and the sheet metal cover 10 are merely press-contacted, and are not mechanically connected. The pressing force acts on each other, but the pulling force does not act.

  FIG. 7B shows an enlarged cross-sectional view of a portion C that is in the vicinity of the card connector portion. With respect to the sheet metal cover 10, when the first casing 2 a and the second casing 2 b are combined, the contact spring 12 fixed on the ground circuit on the printed circuit board 8 is brought into contact with the sheet metal cover 10. . As a result, the sheet metal cover 10 is connected to the ground circuit of the printed circuit board 8. In this way, the sheet metal cover 10 is grounded to shield the card connector and to prevent the sheet metal cover 10 from acting as an antenna.

  FIG. 8 shows an external perspective view of the mobile phone 100 when viewed from the upper left. When inserting the SD card 13 into the mobile phone 100 described above, the SD card 13 is inserted into the opening 6a of the lower housing 2 as indicated by an arrow D. When the mobile phone 100 is placed on a desk and the SD card 13 is inserted, or when the mobile phone 100 is held in the hand and the SD card 13 is inserted, the insertion force is applied in an obliquely downward direction to push the sheet metal cover 10. However, in the mobile phone 100 of the present invention configured as described above, the force pushing the sheet metal cover 10 is transmitted to the second housing 2b that fixes the sheet metal cover 10, and is transmitted to the housing 9 of the connector. Absent. As a result, a force acts on the sheet metal cover 10 as in the prior art, the force acting on the sheet metal cover 10 is transmitted to the connector housing 9, and the solder that fixes the connector housing 9 to the printed circuit board 8 cracks. In an extreme case, the entire card connector is prevented from peeling off from the printed circuit board 8.

  In the above description, an example in which the top cover of the card connector is a sheet metal cover and is fitted to the second casing has been described. However, the sheet metal cover is integrated with the second casing, that is, the sheet metal cover is omitted. The same effect can be obtained by using the second housing as the upper cover of the card connector.

(Embodiment 2)
Next, mobile phone 200 according to Embodiment 2 of the present invention will be described. The structure of the mobile phone 200 is basically similar to that of the first embodiment, but the lower casing 14 is a total of a third casing 14c in addition to the first casing 14a and the second casing 14b. It is characterized in that it is composed of three housings. The third casing 14c is used as a battery cover that is detachable from the second casing 14b. FIG. 9 shows an exploded perspective view of the third casing 14c, the second casing 14b, and the sheet metal cover 15. As shown by the arrow E in FIG. 9, the sheet metal cover 15 is pushed up from the bottom of the second housing 14b, and the holding portions 15a and 15a of the sheet metal cover 15 are held to the holding projections of the second housing 14b. Fit into 16a, 16a and fix. The third housing 14c is detachably fixed by hooking claws (not shown) into the plurality of hook holes 21 of the second housing 14b.

  FIG. 10A shows a cross-sectional view of the lower housing 14. The battery 17 is accommodated between the first casing 14a and the second casing 14b. As for the second casing 14b, the portion corresponding to the position of the sheet metal cover 15 is formed by cutting out the flat portion as a rectangular hole so that the top surface of the sheet metal cover 15 penetrates the second casing 14b. The third casing 14c faces the third casing 14c. As a result, the lower height of the lower housing is realized such that the flat portion of the second housing 14b and the flat portion of the third housing 14c do not overlap. FIG. 10B shows an enlarged cross-sectional view of the F portion in the vicinity of the card connector. The second housing 14b is provided with the holding projections 16a and 16a, and the sheet metal cover 15 is provided with the grips 15a and 15a as in the first embodiment.

  FIG. 10C shows a cross-sectional view of the lower housing 14 when the third housing 14c is removed. FIG. 11 shows an external perspective view of the lower housing 14 when the third housing 14c is removed. When the third casing 14c is removed, the surface of the battery 17 is exposed, so that the battery 17 can be replaced. At the same time, the outer surface of the sheet metal cover 15 is exposed from the rectangular hole of the second housing 14b. The space of the SD card storage unit 6 can be seen. Therefore, the SD card can be inserted and removed with the third housing 14c removed while viewing the insertion direction stamped on the surface of the sheet metal cover 15.

  Also at this time, the force pushing the sheet metal cover 15 is transmitted to the second housing 14b in which the sheet metal cover 15 is fitted, and not transmitted to the housing 9 of the connector. Even if a force is applied to the sheet metal cover 15, the force applied to the sheet metal cover 15 is transmitted to the connector housing 9, and the solder fixing the connector housing 9 to the printed circuit board 8 is cracked or in an extreme case. It is possible to prevent the entire card connector from being peeled off from the printed board 8.

  The present invention can be applied to an electronic device with a card connector to which a card type recording medium such as a UIM card or an SD memory card is mounted.

1 is an external perspective view of a mobile phone with a card connector according to Embodiment 1 of the present invention. (A) Left side view when the cellular phone with a card connector according to Embodiment 1 of the present invention is folded (b) The cellular phone with a card connector according to Embodiment 1 of the present invention is folded to have an operation unit Left side view when the lower casing is on top and the upper casing with the display unit is on the bottom (c) Side view of the lower casing of the mobile phone with a card connector according to Embodiment 1 of the present invention (A) Cross-sectional view showing the lower case of the mobile phone with a card connector according to Embodiment 1 of the present invention. (B) Lower case of the mobile phone with a card connector according to Embodiment 1 of the present invention. Sectional view showing 1 is an external view of a sheet metal cover of a mobile phone with a card connector according to Embodiment 1 of the present invention. The figure which shows the correspondence of the sheet-metal cover of the mobile telephone with a card connector which concerns on Embodiment 1 of this invention, and the projection part for holding | maintenance of a 2nd housing | casing. (A) The figure which shows the state which attached the sheet-metal cover of the mobile telephone with a card connector which concerns on Embodiment 1 of this invention to the protrusion part for holding | maintenance of the 2nd housing | casing (b) It concerns on Embodiment 1 of this invention The figure which shows the state which attached the sheet-metal cover of the mobile telephone with a card connector to the protrusion part for holding | maintenance of a 2nd housing | casing. (A) Sectional view of lower casing of mobile phone with card connector according to Embodiment 1 of the present invention (b) Partial sectional view of lower casing of mobile telephone with card connector according to Embodiment 1 of the present invention 1 is an external perspective view of a mobile phone with a card connector according to Embodiment 1 of the present invention as viewed from the upper left. The disassembled perspective view which showed the correspondence of the 3rd housing | casing with the card connector which concerns on Embodiment 2 of this invention, the 2nd housing | casing, and a sheet metal cover. (A) Sectional view of lower casing of mobile phone with card connector according to Embodiment 2 of the present invention (b) Partial sectional view of lower casing of mobile telephone with card connector according to Embodiment 2 of the present invention ( c) Sectional view of the lower housing of the mobile phone with card connector according to Embodiment 2 of the present invention. External appearance perspective view of the lower housing | casing which removed the 3rd housing | casing of the mobile phone with a card connector which concerns on Embodiment 2 of this invention, and was seen from diagonally lower side External perspective view of conventional card connector Partial sectional view of a conventional card connector Partial sectional view of another conventional card connector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper housing | casing 2 Lower housing | casing 2a 1st housing | casing 2b 2nd housing | casing 3 Hinge part 4 Display part 5 Operation part 6 SD card storage part 7 UIM card storage part 8 Printed circuit board 9 Connector housing 10 Sheet metal cover 10a Grip part 10b Pressing part 10c Retaining rib 11a Holding projection part 12 Contact spring 13 SD card 17 Battery

Claims (7)

The case of the portable terminal device with a card connector is configured to integrate at least the first case and the second case,
For the card connector, the housing and top cover can be separated.
Fixing the housing of the card connector on a printed circuit board mounted on the first housing;
The upper surface cover of the card connector is fixed integrally with the second housing,
A portable terminal with a card connector, wherein when the first casing and the second casing are overlapped, the housing and the upper surface cover face each other to form one card connector. apparatus. The mobile terminal device with a card connector according to claim 1, wherein the upper surface cover is a sheet metal cover. 3. The portable terminal device with a card connector according to claim 2, wherein the upper surface cover is connected to a ground circuit portion on a printed board mounted on the first housing by a contact terminal. 3. The portable terminal device with a card connector according to claim 2, wherein a drop-off preventing portion is formed on the upper surface cover to prevent the drop-off when the upper cover is integrally fixed with the second casing. The mobile terminal device with a card connector according to claim 1, wherein the upper surface cover is formed integrally with the second housing. The mobile terminal device with a card connector has a housing in which at least a first housing and a second housing are stacked and integrated, and a third housing is detachably provided on the second housing. ,
For the card connector, the housing and top cover can be separated.
Fixing the housing of the card connector on a printed circuit board mounted on the first housing;
The upper surface cover of the card connector is fixed integrally with the second housing,
When the first housing, the second housing, and the third housing are integrated, the housing and the upper surface cover face each other to form one card connector,
A portable terminal device with a card connector, wherein the third casing is a cover that covers an upper surface cover of the card connector. Attaching an indication of the card insertion direction on the surface of the top cover of the card connector,
The mobile terminal with a card connector according to claim 6, wherein when the third casing is removed from the second casing, the surface of the upper cover of the card connector is visible from the outside. apparatus.

Images