JP4564578B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device in which an electronic component and an antenna device are arranged on a peripheral portion of a casing.

  2. Description of the Related Art Conventionally, for example, a notebook personal computer (hereinafter referred to as a notebook PC) disclosed in Patent Document 1 is known as an electronic apparatus in which an antenna device is disposed on the peripheral portion of a display housing.

  The notebook PC disclosed in this publication includes an antenna unit on each side surface of the display housing. This antenna unit has a structure in which an antenna ground part is interposed between the connection part and the radio wave resonance part so as to increase the distance from the power supply line wired along the side surface of the display unit housing to the radio wave resonance part. .

  In particular, in this antenna unit, in order to prevent changes in antenna characteristics due to variations in the wiring position of the feed line, the feed line is wired at a position away from the radio resonance unit on the back side of the antenna ground unit with respect to the radio resonance unit. ing.

  However, since the antenna unit disclosed in this publication is formed by pressing a single sheet metal, wiring the power supply line along the antenna ground affects the antenna characteristics of the radio wave resonance unit. Become.

Japanese Patent Laying-Open No. 2004-266881 (see paragraph [0032], FIG. 4)

  An object of the present invention is to provide an electronic device that can stabilize antenna characteristics.

  In order to achieve the above object, an electronic device according to the present invention includes a housing, an electronic component housed in the housing and connected with a cable wired along the peripheral edge of the housing, and the housing. An insulating material having a first surface portion that is housed and provided at a peripheral portion of the housing and that faces the inner surface of the housing, and a second surface portion that is located on the opposite side of the first surface portion. An antenna device having a core member and an antenna wire covering the first surface portion of the core member; and provided on a second surface portion of the core member and wired at a certain distance from the antenna device. And a positioning member for positioning the cable.

According to another aspect of the invention, there is provided an electronic device including a housing having a mask portion and a cover portion, a display device housed in the housing, an electronic component housed in the housing and connected to a cable, and the mask. surrounded by parts and the cover portion and the above display device, core member and an antenna line located between the core member and the housing, an antenna device having a said display device of said core member And a positioning member for positioning the cable between the display device and the antenna device at a certain distance from the display device and the antenna device.

  According to the invention, since the wiring position of the cable passing near the antenna device is positioned at a certain distance from the antenna device, the cable of the electronic component arranged in parallel with the antenna device interferes with the antenna device, and the antenna characteristics are obtained. It is possible to prevent inconveniences that affect the antenna characteristics and stabilize the antenna characteristics.

  Since the electronic device according to the present invention has the configuration and operation as described above, the antenna characteristics can be stabilized.

1 is an external perspective view showing a notebook PC according to an embodiment of the present invention. The external view which shows the internal structure in the upper-end peripheral part of the display housing | casing of the notebook PC of FIG. The schematic diagram for demonstrating the wiring structure of the electronic component arrange | positioned in the upper-end peripheral part of FIG. The front view which shows the antenna apparatus provided with the positioning member which concerns on 1st Embodiment of this invention. FIG. 5 is a cross-sectional view of a main part of the antenna device of FIG. Sectional drawing which shows the modification of the antenna apparatus of FIG. Sectional drawing which shows the principal part which shows the antenna apparatus provided with the positioning member based on 2nd Embodiment of this invention. Sectional drawing which shows the modification of the antenna apparatus of FIG. The principal part sectional view showing the antenna device provided with the positioning member concerning a 3rd embodiment of this invention. Sectional drawing which shows the 1st modification of the antenna apparatus of FIG. Sectional drawing which shows the 2nd modification of the antenna apparatus of FIG. Sectional drawing which shows the principal part which shows the antenna apparatus provided with the positioning member based on 4th Embodiment of this invention. The front view of the antenna apparatus of FIG. The principal part sectional drawing which shows the antenna apparatus provided with the positioning member which concerns on 5th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external perspective view of a notebook personal computer 1 (hereinafter simply referred to as a notebook PC 1) as an electronic apparatus according to an embodiment of the present invention. FIG. 2 shows the internal structure of the upper peripheral edge of the display housing 2 of the notebook PC 1. The electronic device of the present invention is not limited to the notebook PC 1 described here, and may be another electronic device having a wireless communication function having a display unit integrally with the device main body.

  As shown in FIG. 1, the notebook PC 1 is roughly classified and includes a rectangular plate-shaped display housing 2 and a rectangular plate-shaped device body 4. The lower end of the display housing 2 is pivotally connected to the device main body 4 via the two hinge portions 6, and the display housing 2 closes the upper surface as shown in the closed position where the upper surface of the device main body 4 is closed. It can be opened and closed between the open position where it opens. In the case of a tablet notebook PC, the display housing 2 and the device body 4 are connected by a single hinge.

  As shown in FIG. 2, the display housing 2 incorporates a rectangular plate-like liquid crystal panel 8, and has five antennas for wireless communication outside the upper end of the liquid crystal panel 8, that is, at the peripheral edge of the upper end of the display housing 2. The devices 10a, 10b, 12a, 12b, 12c and the camera 14 are accommodated. The five antenna devices 10 a, 10 b, 12 a, 12 b, 12 c and the camera 14 that are arranged outside the upper end of the liquid crystal panel 8 and the camera 14 are covered with a rectangular frame-shaped mask member 2 a that covers the peripheral edge of the liquid crystal panel 8. Is called.

  The two antenna devices 10a and 10b are 3G antennas, and the three antenna devices 12a, 12b, and 12c include antenna devices for wireless LAN such as Bluetooth (registered trademark), for example. These five antenna devices 10a, 10b, 12a, 12b, and 12c are arranged in such a manner that two antenna devices 10a and 10b and three antenna devices 12a, 12b, and 12c are alternately arranged in the illustrated order with the camera 14 in between. Arranged along the upper edge of the panel 8.

  FIG. 3 schematically shows the wiring structure of the five antenna devices 10a, 10b, 12a, 12b, 12c and the camera 14. The device body 4 includes a 3G wireless communication module 20a connected to the antenna devices 10a and 10b, and antenna devices 12a and 12b as power supply circuits that generate high-frequency signals according to transmission signals in order to transmit and receive wireless radio waves. The wireless LAN wireless communication module 20b is connected to the wireless LAN 12c.

  The wireless communication modules 20a and 20b are connected to the five antenna devices 10a, 10b, 12a, 12b, and 12c via feed lines 21, 22, 23, 24, and 25 that pass through the hinge portion 6, respectively. The feeder lines 21 to 25 are coaxial cables having a diameter of about 1 [mm], for example. Further, the cable 26 connected to the camera 14 is also wired to the device main body 4 via the hinge portion 6.

  The wireless communication modules 20a and 20b are connected to the CPU 32 and the memory 34 via the CPU bus 30, respectively. The wireless communication modules 20a and 20b include an RF (Radio Frequency) unit, a crystal oscillation unit, and a baseband processing unit (not shown).

  FIG. 4 is a front view of the antenna device 10a according to the first embodiment of the present invention. FIG. 5 is a sectional view of the antenna device 10a taken along line VV in FIG. In FIG. 4, the illustration of the mask member 2a covering the peripheral edge of the liquid crystal panel 8 is omitted, and in FIG. 5, the mask member 2a is shown. The antenna device 10a is disposed adjacent to the side closer to the corner of the display housing 2 than the antenna device 12b as another electronic component.

  As shown in FIG. 4, the feeding line 24 (cable) of the antenna device 12b (electronic component) arranged adjacent to the right side of the antenna device 10a in the drawing at the upper peripheral edge of the display housing 2 is connected to the antenna device 10a. Wiring extends in the left direction in the figure through the vicinity of the. For this reason, if the wiring position of the feeder line 24 is shifted up and down and the distance from the antenna device 10a is changed, the antenna characteristics of the antenna device 10a are affected. In other words, in order to stabilize the antenna characteristics of the antenna device 10a, it is important to position the wiring position of the feed line 24 passing near the antenna device 10a at a position spaced apart from the antenna device 10a by a certain distance.

  The same applies to the cable 26 of the camera 14 (electronic component) passing near the other antenna device 10b. In other words, positioning the wiring position of the cable 26 at a position spaced apart from the antenna device 10b by a certain distance is important for stabilizing the antenna characteristics of the antenna device 10b. In the following description, a structure for positioning the wiring position of the feeder 24 passing near the antenna device 10a described above will be described as a representative.

  By the way, when a plurality of electronic components such as a plurality of antenna devices and cameras are arranged in parallel at the upper peripheral edge of the display housing 2 as in the above-described notebook PC 1, cables for connecting each electronic component to the device main body 4 are different. It is unavoidable that wiring is performed near the electronic component. In the present embodiment, the cable passing near the antenna device 10a is only the feed line 24 of the antenna device 12b. However, depending on how the cable is routed, a plurality of cables may be routed near the antenna device 10a. Sometimes it is done.

  For this reason, the inventors of the present application have found a positioning structure of the feeder line 24 that does not affect the antenna characteristics of the antenna device 10a. As shown in FIGS. 4 and 5, the antenna device 10a according to the first embodiment of the present invention is a positioning member for positioning the cable (feeding line 24) of another electronic component (antenna device 12b). A resin protrusion 40 is provided.

  The antenna device 10a described above includes a core member 42 formed of an elongated rectangular block-shaped resin, and an antenna wire 44 (detailed shape is not shown) wound around the outer surface of the core member 42. The antenna wire 44 is printed on a rectangular flexible printed board 46 (hereinafter referred to as an FPC board 46), and is wound around the core member 42 by winding the FPC board 46 around the core member 42. In the state shown in FIG. 4 in which the FPC board 46 is wound around the core member 42, both longitudinal ends of the core member 42 slightly protrude from the end sides of the FPC board 46.

  A ground pattern G for grounding the antenna line 44 is printed on the FPC board 46, and the feed line 21 is connected to a feed point (not shown) of the antenna line 44. An end portion 46 a of the FPC board 46 on which the ground pattern G is printed is sandwiched between the liquid crystal panel 8 and the back cover 2 b of the display housing 2. At this time, the antenna device 10 a is attached to the back cover 2 b of the display housing 2 with a double-sided tape via the reinforcing plate 48. On the other hand, the end 46 b of the FPC board 46 on the side where the antenna line 44 is printed ends near the lower end on the front side of the core member 42.

  That is, the FPC board 46 is wound around the front surface, the upper surface, and the back surface of the core member 42, and the FPC board 46 is not wound around the lower surface side facing the upper end of the liquid crystal panel 8. And the protrusion part 40 is attached to the lower surface of the core member 42 which does not interfere with this antenna wire 44. FIG. Since the core member 42 is made of resin, the protruding portion 40 may be integrally formed with the core member 42. The length of the protrusion 40 is slightly shorter than the length of the core member 42. In the present embodiment, the protrusion 40 has an elongated shape continuous along the core member 42, but may be provided intermittently along the longitudinal direction of the core member 42.

  As shown in the cross section of FIG. 5, the protruding portion 40 keeps a constant distance between the feeding line 24 that passes nearby and the lower surface of the core member 42, that is, the distance between the antenna device 10 a and the feeding line 24. In order to keep constant, it has the step part 40a extended in the longitudinal direction. In other words, the feeder line 24 can be formed with a certain distance from the antenna device 10a only by being accommodated in the stepped portion 40a. In other words, by providing the protruding portion 40 with the stepped portion 40a, the flange portion 40b that covers the front side of the feeder 24 accommodated and disposed in the stepped portion 40a is formed.

  When the feed line 24 is actually accommodated in the stepped portion 40a, first, the antenna device 10a is attached in the back cover 2b of the display housing 2, the adjacent antenna device 12b is attached to the back cover 2b, and finally, The feeder line 24 is pushed into the stepped portion 40a from below the flange 40b of the protruding portion 40, and the feeder line 24 is accommodated in the stepped portion 40a. At this time, in order to prevent the power supply line 24 from coming off from the stepped portion 40a, several power supply lines 24 may be temporarily secured with a tape (not shown). In this way, by accommodating and arranging the feed line 24 in the stepped portion 40a, it is possible to prevent a problem that the feed line 24 is sandwiched when the antenna device 10a is attached to the back cover 2b.

  As described above, according to the present embodiment, the cable 24 of the other electronic component 12b adjacent to the antenna device 10a can be obtained by adding a simple configuration that simply attaches the protruding portion 40 having the stepped portion 40a to the core member 42. The distance to the antenna device 10a can be kept constant, the antenna characteristics can be prevented from changing, and the antenna characteristics can be stabilized.

  FIG. 6 shows a modification of the above-described first embodiment. According to this modified example, at least one claw portion 40 c is provided inside the flange portion 40 b of the protruding portion 40. As a result, the power supply line 24 accommodated in the stepped portion 40a is prevented from falling off. When the feeding line 24 is accommodated in the step 40a having the claw 40c, the feeding line 24 is pushed into the step 40a so as to get over the claw 40c, and the feeding line 24 is latched to the step 40a. Is done.

  According to this modification, compared to the case where the power supply line 24 is accommodated in the stepped portion 40a that does not have the claw portion 40c of the first embodiment described above, there is no fear that the power supply line 24 drops from the stepped portion 40a. This eliminates the need for a tape for temporarily securing the power supply line 24 accommodated in the stepped portion 40a, thereby reducing the material cost and simplifying the assembly process.

  FIG. 7 shows a cross-sectional view of an antenna device 10a having a protrusion 50 as a positioning member according to the second embodiment of the present invention. The antenna device 10a according to the second embodiment has the same structure as that of the first embodiment described above except that the cross-sectional shape of the protruding portion 50 is different. Therefore, the same reference numerals are given to components that function in the same manner, and detailed description thereof is omitted.

  The protrusion 50 is formed in a U-shaped cross section that opens toward the upper end of the liquid crystal panel 8. In this case, the stepped portion 52 is formed at the bottom of the U-shape, and functions to maintain a constant distance between the feeder line 24 and the core member 42 as in the first embodiment described above. Therefore, even when this protrusion 50 is employed, the same effects as those of the first embodiment described above can be obtained. In addition, the wiring position of the feeder line 24 can be more reliably positioned as compared with the first embodiment described above.

  That is, in a state where the power supply line 24 is accommodated and disposed in the step portion 52 of the protruding portion 50, the power supply line 24 is sandwiched by the standing wall portions 54 on both sides of the step portion 52, and the thickness direction of the display housing 2. The movement of the power supply line 24 is also restricted. Thereby, compared with the case where the protrusion part 40 of 1st Embodiment is used, the freedom degree of the movement of the feeder line 24 can be decreased more and the antenna characteristic of the antenna apparatus 10a can be stabilized more.

  FIG. 8 shows a modification of the above-described second embodiment. The structure of this modification is characterized in that the opening of the projecting portion 56 having a U-shaped cross section faces the front side of the display housing 2. That is, the step portion 58 of the protruding portion 56 is a portion interposed between the power supply line 24 and the core member 42 when the power supply line 24 is accommodated in the U-shaped portion.

  In this case, when the power supply line 24 is accommodated in the U-shaped part, the power supply line 24 can be pushed in from the front of the protruding part 56, and between the upper end of the liquid crystal panel 8 as in the second embodiment. Compared with the case of pushing upward from the gap, the operation of routing the feeder line 24 can be facilitated. In this case, provision of a claw portion (not shown) inside the stepped portion 58 eliminates the need for a temporary fastening tape. That is, according to this modified example, the same effect as the case where the protruding portion 50 of the second embodiment described above is used can be obtained, the attachment work of the feeder 24 can be facilitated, and the workability can be improved. Can do.

  FIG. 9 shows a cross-sectional view of an antenna device 10a having a protrusion 60 as a positioning member according to a third embodiment of the present invention. The protruding portion 60 has the same structure as that of the first embodiment described above except that the protruding portion 60 has a stepped portion 64 that can accommodate the two cables 24 and 62. Therefore, the same reference numerals are given to components that function in the same manner as in the first embodiment, and detailed description thereof is omitted.

  That is, the step 64 of the protrusion 60 has a wider width in the thickness direction of the display housing 2 than the step 40a of the protrusion 40 of the first embodiment. In addition to the feeder line 24 of the device 12b, a cable 62 of another electronic component not shown here can be accommodated.

  FIG. 10 shows a first modification in which the movement of one cable 62 is more reliably regulated after the two cables 24 and 62 are accommodated and arranged, and FIG. A second modification in which both cables 24 and 62 are securely restrained is shown. In any of the modifications, the cable 24 and 62 are positioned in the thickness direction of the display housing 2 to reduce the degree of freedom of the cable positioning, thereby stabilizing the antenna characteristics of the antenna device 10a. Can be made.

  FIG. 12 shows a cross-sectional view of an antenna device 10a provided with a rib 70 for positioning the feeder 24 in cooperation with the protrusion 40 as a positioning member according to the fourth embodiment of the present invention. The structure of the protruding portion 40 is the same as that of the first embodiment described above. That is, the positioning member according to the present embodiment is different from the first embodiment in that the rib 70 is provided in addition to the protruding portion 40. Therefore, the same reference numerals are given to components that function in the same manner as in the first embodiment, and detailed description thereof is omitted.

  The rib 70 protrudes forward from the inner surface of the back cover 2 b of the display housing 2 between the standing wall 40 b of the protrusion 40 and the upper end of the liquid crystal panel 8. The rib 70 may be formed integrally with the back cover 2b. In addition, the rib 70 may be provided continuously over the entire length of the antenna device 10a. However, in the present embodiment, as shown in FIG. 13, the rib 70 is provided at two locations separated in the longitudinal direction of the antenna device 10a. .

  The rib 70 is extended so as to contact the tip of the standing wall 40 b of the protrusion 40 through a rectangular hole 72 formed at a corresponding position on the reinforcing plate 48 and the FPC board 46. Thus, when positioning the feed line 24 using the rib 70, after the antenna device 12b is attached to the back cover 2b, the feed line 24 is placed on the two ribs 70, and the protrusion 40 is mounted. The provided antenna device 10a is attached. As a result, the power supply line 24 is surrounded between the stepped portion 40 a of the protruding portion 40 and the rib 70.

  As described above, according to the present embodiment, the same effects as those of the first embodiment described above can be obtained, and further, the operation of routing the feeder line 24 can be facilitated. That is, since the feed line 24 is accommodated in the step portion 40a, it is not necessary to push the feed line 24 into the step portion 40a or temporarily fix the feed line 24, thereby improving workability.

  FIG. 14 shows a cross-sectional view of an antenna device 10a provided with a rib 80 as a positioning member according to a fifth embodiment of the present invention. The positioning member of the present embodiment is different from the above-described embodiments in that the positioning member does not have a protrusion attached to the core member 42. In addition to this, the same reference numerals are given to components that function in the same manner as the above-described embodiment, and detailed description thereof will be omitted.

  The rib 80 is integrally projected from the inner surface side of the back cover 2 b of the display housing 2. In the present embodiment, the rib 80 is integrally formed with the back cover 2b. A through hole 82 is formed in the antenna device 10a at a corresponding position on the FPC board 46 and the reinforcing plate 48 so that the rib 80 can be inserted therethrough. The rib 80 is disposed between the antenna device 10a (core member 42) and the feeder line 24 and functions to keep the distance between the two constant.

  When positioning the power supply line 24 by the positioning member having the rib 80, first, the antenna devices 10a and 12b are attached to the back cover 2b in this order, and the power supply line 24 is placed below the rib 80. Then, the feeder line 24 is temporarily fixed to the rib 80 by using a tape 84 at several places.

  As described above, according to the present embodiment, for the antenna device 10a, it is only necessary to change the simple structure by providing the hole 82 in the FPC board 46 in advance. The antenna characteristics of the antenna device 10a can be stabilized.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

  DESCRIPTION OF SYMBOLS 1 ... Notebook PC, 2 ... Display housing, 2b ... Back cover, 4 ... Equipment main body, 6 ... Hinge part, 8 ... Liquid crystal panel, 10a, 10b ... Antenna apparatus, 12a, 12b, 12c ... Antenna apparatus, 14 ... Camera , 24 ... feed line, 40 ... projection, 40a ... step, 42 ... core member, 44 ... antenna wire, 46 ... FPC board, G ... ground pattern.

Claims (7)

A housing,
Electronic components housed in the housing and connected to cables routed along the peripheral edge of the housing;
A first surface portion that is housed in the housing and is provided at a peripheral portion of the housing and that faces the inner surface of the housing, and a second surface portion that is located on the opposite side of the first surface portion. An insulative core member, and an antenna wire that covers the first surface portion of the core member;
A positioning member that is provided on the second surface portion of the core member and positions the cable so as to be wired at a certain distance from the antenna device;
An electronic device comprising: A housing having a mask portion and a cover portion;
A display device housed in the housing;
An electronic component housed in the housing and connected with a cable;
Surrounded by the above mask portion and the cover portion and the display device, and the core member, and an antenna line located between the core member and the housing, an antenna device having a
A positioning member provided on the display device side of the core member, the positioning member positioning the cable between the display device and the antenna device at a certain distance from the display device and the antenna device;
An electronic device comprising:   3. The electronic device according to claim 1, wherein the positioning member includes a step portion that accommodates and arranges the cable so as to form the constant distance between the core member and the cable. .   4. The electronic apparatus according to claim 3, wherein a claw for preventing the cable from coming off is projected from the stepped portion. There are multiple electronic components,
The electronic device according to claim 3, wherein the step portion accommodates a plurality of cables connecting the plurality of electronic components.   The electronic device according to claim 3, wherein the positioning member includes a rib projecting from the casing so as to restrain the cable in cooperation with the stepped portion.   The electronic apparatus according to claim 1, wherein the positioning member includes a rib projecting from the housing between the antenna device and the cable.

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