JP5420003B2 - Mobile device - Google Patents

Description

  The present invention relates to a portable terminal that covers an exposed portion of an electric wire routed inside a casing with a cylindrical conductor member, and connects the electric conductor member to the chassis by a conductive member, thereby grounding the electric wire to the chassis.

In general, an antenna cable provided in a mobile terminal needs to be grounded to prevent noise. As a grounding means, for example, a protrusion is provided on a sheet metal member in a case, a lead conductor portion of an antenna cable is placed on the protrusion, and the periphery of the lead conductor portion is pressed by two ribs provided on the case. ing.
By pressing the periphery of the lead conductor portion with two ribs, it is possible to bring the conductor lead portion into contact with the protruding portion of the sheet metal member and to ground the conductor lead portion to the sheet metal member (for example, Patent Document 1).

As another grounding means, there is known one in which a slit portion is provided in a casing made of a conductive material and an antenna cable clamp portion (conductor portion) is fitted to the slit portion.
By fitting the clamp portion to the slit portion, the clamp portion can be grounded to the housing (for example, Patent Document 2).

JP 2010-258826 (paragraph 0080, FIG. 13) JP 2009-060302 A (paragraph 0026, FIG. 6)

However, since the grounding means of Patent Document 1 makes the lead conductor part of the antenna cable contact the protrusion part of the sheet metal member, the protrusion part and the lead conductor part are in point contact, and it is difficult to ensure a stable conduction state.
In addition, since the protruding portion of the sheet metal member is located below the lead-out conductor portion of the antenna cable, it is difficult to visually confirm the contact state.

On the other hand, in the grounding means of Patent Document 2, in order to fit the clamp portion (conductor portion) of the antenna cable into the slit portion of the housing, the slit portion and the clamp portion are in point contact or line contact. Furthermore, in order to make it easy to fit a clamp part in a slit part, it is necessary to form a clamp part small, and the contact pressure of a slit part and a clamp part cannot fully be ensured.
Thus, the slit portion and the clamp portion are in point contact or line contact, and the contact pressure cannot be sufficiently ensured, so that it is difficult to ensure a stable conduction state.
In addition, with the clamp portion fitted to the slit portion, the clamp portion is displaced in the longitudinal direction of the antenna cable with respect to the slit portion, and conduction between the slit portion and the clamp portion cannot be obtained. Conceivable.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mobile terminal that can reliably obtain electrical continuity of an electric wire to a chassis.

  The portable terminal of the present invention includes a casing, a metal plate-like chassis accommodated in the casing, a battery pack supported by the chassis, a first circuit board adjacent to the battery pack, and the battery pack. A second circuit board adjacent to the side opposite to the first circuit board, and connecting the first circuit board and the second circuit board, and an electric wire disposed on the side of the battery pack, An exposed portion where the core wire is exposed at a predetermined position of the electric wire, a cylindrical conductor member which covers the exposed portion and has conductivity, and can be in surface contact with the chassis and the conductor member and has conductivity. An elastic member; a large-diameter portion provided on an outer peripheral surface of the conductor member; and an engagement portion provided in the chassis, which holds the electric wire and cannot pass the large-diameter portion.

A cylindrical conductor member covering the exposed portion of the electric wire was provided, and a large diameter portion was provided on the outer peripheral surface of the conductor member. Furthermore, an engagement portion through which the large diameter portion cannot pass is provided in the housing. Therefore, the conductor member can be positioned at a predetermined position while suppressing the displacement of the large diameter portion at the engaging portion.
Moreover, the elastic member which has the electroconductivity which can carry out surface contact with respect to a chassis and a conductor member was provided.
As described above, the conductor member can be positioned at a predetermined position, and the elastic member can be brought into surface contact with the chassis and the conductor member, thereby reliably bringing the conductor member and the elastic member into surface contact with each other. Can be brought into surface contact.

  Moreover, the portable terminal of this invention has the longitudinal direction dimension of the said conductor member larger than the length along the longitudinal direction of the said conductor member in the said elastic member.

  Therefore, a slight displacement of the conductor member with respect to the elastic member is allowed by the relatively large conductor member, and the conductor member can be easily arranged on the elastic member. Thereby, the conductor member can be brought into contact with the elastic member without worrying about the positioning of the conductor member.

  Furthermore, in the portable terminal of the present invention, the longitudinal dimension of the conductor member may be smaller than the length of the elastic member along the longitudinal direction of the conductor member.

Therefore, a slight displacement of the conductor member with respect to the elastic member is allowed by the relatively large elastic member, and the conductor member can be easily arranged on the elastic member.
Thereby, the conductor member can be brought into contact with the elastic member without worrying about the positioning of the conductor member.

  According to the portable terminal of the present invention, the conductive member can be positioned at a predetermined position, and the elastic member can be brought into surface contact with the chassis and the conductive member, so that the conductive member (that is, the electric wire) is reliably connected to the chassis. Is obtained.

The disassembled perspective view which shows the portable terminal of 1st Embodiment which concerns on this invention. Sectional drawing which shows the portable terminal of 1st Embodiment The top view which shows the state which connected the electric wire to the chassis of 1st Embodiment. Part I enlarged view of FIG. The perspective view which shows the state which pressed the conductor member of FIG. 4 against the 1st elastic member with the 2nd elastic member. The disassembled perspective view which shows the example which presses the conductor member of FIG. 5 against a 1st elastic member Part II enlarged view of FIG. The disassembled perspective view which shows the conductor member and elastic member of 2nd Embodiment which concern on this invention Sectional drawing which shows the conductor member and elastic member of 3rd Embodiment which concern on this invention The perspective view which shows the conductor member and elastic member of 4th Embodiment which concern on this invention. Sectional drawing which shows the conductor member and elastic member of 5th Embodiment which concern on this invention

  Hereinafter, a mobile terminal according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the mobile terminal 10 of the first embodiment includes a housing 11, a metal plate-like chassis 15 housed in the housing 11, a battery pack 16 supported by the chassis 15, and a battery pack. A first circuit board 17 and a second circuit board 18 adjacent to 16 are provided.

  Furthermore, the mobile terminal 10 is provided in the housing 11, the electric wire 21 connecting the first circuit board 17 and the second circuit board 18, the conductor member 24 covering the exposed portion 22 (see FIG. 2) of the electric wire 21. A pair of engaging portions (engaging portions) 28 and 29 capable of positioning the conductor member 24 are provided.

  In addition, the mobile terminal 10 includes a first elastic member (elastic member) 32 that can come into surface contact with the chassis 15 and the conductor member 24, and a second elastic member 33 that can come into contact with the housing 11 and the conductor member 24. And.

The housing 11 includes a case 12 formed in a substantially rectangular frame shape, and a cover 13 that is attached to the back surface 12A (see FIG. 2) side of the case 12 and covers the back surface 12A side.
As shown in FIG. 2, the display unit 36 is provided at the opening 14 of the case 12 and on the surface 15 </ b> A side of the chassis 15, and the display unit 36 is covered with a protective cover 37.

As shown in FIGS. 1 and 3, the battery pack 16 is formed in a substantially rectangular shape that can be placed in a substantially half region on the back surface 15 </ b> B side of the chassis 15.
The battery pack 16 has a first wall portion 16 </ b> A disposed substantially at the center of the chassis 15 and a second wall portion 16 </ b> B disposed along one side portion 15 </ b> C of the chassis 15.
Further, the battery pack 16 has a third wall portion 16C disposed along the end portion 15D of the chassis 15 and a fourth wall portion 16D disposed along the other side portion 15E of the chassis 15.

The first circuit board 17 is adjacent to the first wall portion 16 </ b> A of the battery pack 16. The second circuit board 18 is adjacent to the third wall portion 16 </ b> C opposite to the first circuit board 17.
The first circuit board 17 and the second circuit board 18 are connected by an electric wire 21, and the electric wire 21 is disposed on the second wall portion (side portion) 16 </ b> B side of the battery pack 16.

As shown in FIGS. 4 and 5, the electric wire 21 connects the first circuit board 17 and the second circuit board 18 and corresponds to, for example, an antenna cable.
The electric wire 21 has an exposed portion 22 (see FIG. 7) where the core wire is exposed at a predetermined position adjacent to the second wall portion 16B (see FIG. 1).
The exposed portion 22 of the electric wire 21 is covered with a cylindrical conductor member 24 having conductivity. Thereby, the exposed part 22 of the electric wire 21 and the conductor member 24 are surface-contacted so that conduction | electrical_connection is possible.

As shown in FIGS. 6 and 7, the cylindrical conductor member 24 is provided with a pair of large-diameter portions (large-diameter portions) 25 and 26 at both end portions 24B and 24C of the outer peripheral surface 24A.
Further, a pair of engaging portions 28 and 29 are provided on the chassis 15 so as to protrude toward the inside 38 (see FIG. 2) of the housing 11. The pair of engaging portions 28 and 29 are provided outside the conductor member 24.

The pair of engaging portions 28 and 29 are arranged along the second wall portion 16 </ b> B (see FIG. 1) of the battery pack 16 at a predetermined interval L <b> 2 that is larger than the longitudinal dimension L <b> 1 of the conductor member 24.
Moreover, one engaging part 28 has the recessed part 28A which can fit the electric wire 21, and cannot pass the one large diameter part 25. FIG.
Further, the other engaging portion 29 has a concave portion 29A into which the electric wire 21 can be fitted and the other large diameter portion 26 cannot pass.

By fitting the electric wire 21 into the recesses 28A and 29A, the electric wire 21 is held by the pair of engaging portions 28 and 29 (see also FIG. 5). In this state, when the electric wire 21 tries to move in the longitudinal direction (arrow A direction), one large-diameter portion 25 comes into contact with one engaging portion 28 or the other large-diameter portion 26 becomes the other engaging portion. 29, the movement of the electric wire 21 is regulated.
Therefore, the conductor member 24 can be positioned at a predetermined position between the pair of engaging portions 28 and 29 while the positional deviation of the pair of large diameter portions 25 and 26 is suppressed by the pair of engaging portions 28 and 29.

In addition, a conductive first elastic member 32 is provided in a portion between the pair of engaging portions 28 and 29 in the chassis 15 (specifically, one side portion 15C of the chassis 15).
The first elastic member 32 is formed in a rectangular plate shape, and is in surface contact with one side portion 15C of the chassis 15 (see also FIG. 2).
Furthermore, the 2nd elastic member 33 is provided in the site | part 12B (refer FIG. 2) between a pair of engaging parts 28 and 29 among the back surfaces 12A (refer FIG. 2) of the housing | casing 11. FIG. Similar to the first elastic member 32, the second elastic member 33 is formed in a rectangular plate shape.

The first elastic member 32 is formed of a softer material than the second elastic member 33.
Therefore, the first elastic member 32 can be elastically deformed by pressing the conductor member 24 toward the first elastic member 32 with the second elastic member 33 and pressing the first elastic member 32 with the conductor member 24.

As shown in FIG. 2, by elastically deforming the first elastic member 32, the first elastic member 32 is brought into contact with the periphery of the conductor member 24, and the first elastic member 32 is brought into surface contact with the conductor member 24. be able to.
As described above, the conductor member 24 can be positioned at a predetermined position, and the first elastic member 32 can be brought into surface contact with the chassis 15 (one side portion 15C) and the conductor member 24. The conduction of 24 (that is, the electric wire 21) is reliably obtained.

As shown in FIGS. 6 and 7, the length of the first elastic member 32 and the second elastic member 33 along the longitudinal direction of the conductor member 24 is set to L3.
The longitudinal dimension L1 of the conductor member 24 is set larger than the length dimension L3 of the first elastic member 32 and the second elastic member 33.
Therefore, the first elastic member 32 and the second elastic member 33 are disposed between the pair of large diameter portions 25 and 26.

  Thereby, a slight deviation of the conductor member 24 with respect to the first elastic member 32 is allowed by the relatively large conductor member 24, and the outer peripheral surface 24 </ b> A of the conductor member 24 can be easily arranged on the first elastic member 32. Therefore, the outer peripheral surface 24 </ b> A of the conductor member 24 can contact the first elastic member 32 without worrying about positioning of the conductor member 24.

Next, a state where the chassis 15 is assembled to the housing 11 will be described with reference to FIG.
As shown in FIG. 2, in a state where the chassis 15 is assembled to the housing 11, the outer surface 24 </ b> A of the conductor member 24 is moved in the arrow B direction by the second elastic member 33 by pressing the second elastic member 33 with the housing 11. Pressed.
By pressing the outer peripheral surface 24 </ b> A, the first elastic member 32 is pressed by the outer peripheral surface 24 </ b> A of the conductor member 24.

Therefore, the conductor member 24 and the first elastic member 32 can be reliably brought into surface contact, and the chassis 15 (one side portion 15C) and the first elastic member 32 can be reliably brought into surface contact.
Thereby, the conduction of the conductor member 24 (that is, the electric wire 21) to the chassis 15 is reliably obtained.

Next, the portable terminal 40 of 2nd Embodiment-6th Embodiment is demonstrated based on FIGS. 8-12.
In addition, in the portable terminal of 2nd Embodiment-6th Embodiment, the same code | symbol is attached | subjected about the same similar member as the portable terminal 10 of 1st Embodiment, and description is abbreviate | omitted.

(Second Embodiment)
As shown in FIG. 8, in the portable terminal 50 of the second embodiment, the longitudinal dimension L4 of the conductor member 24 is set to be smaller than the length dimension L5 along the longitudinal direction of the conductor member 24 in the first elastic member 32. In other respects, the configuration is the same as that of the mobile terminal 10 of the first embodiment.

The length dimension along the longitudinal direction of the conductor member 24 in the second elastic member 33 is also set to L5 similarly to the first elastic member 32.
That is, the first elastic member 32 and the second elastic member 33 are expanded to the outside of the pair of large diameter portions 25 and 26 of the conductor member 24.

In this way, by setting the longitudinal dimension L4 of the conductor member 24 to be smaller than the length dimension L5 of the first elastic member 32 and the second elastic member 33, a slight shift of the conductor member 24 is caused by the first elastic member 32 and The second elastic member 33 is acceptable.
Therefore, the conductor member 24 can be easily disposed between the first elastic member 32 and the second elastic member 33. Thereby, the conductor member 24 can be brought into contact with the first elastic member 32 without worrying about positioning of the conductor member 24.

(Third embodiment)
As shown in FIG. 9, the portable terminal 60 of the third embodiment is such that a first recess 62A is formed in the first elastic member 62 and a second recess 63A is formed in the second elastic member 63. The configuration is the same as that of the mobile terminal 10 of the first embodiment.
Specifically, a first recess 62 </ b> A is formed in a portion of the first elastic member 62 that faces the conductor member 24. Further, a second recess 63 </ b> A is formed in a portion of the second elastic member 63 that faces the conductor member 24.

By forming the first recess 62A in the first elastic member 62 and the second recess 63A in the second elastic member 63, the conductor member 24 can be fitted into the first recess 62A and the second recess 63A. .
Thereby, a large surface contact area between the first elastic member 62 and the conductor member 24 can be ensured, and conduction of the conductor member 24 (that is, the electric wire 21) to the chassis 15 can be obtained more reliably.

(Fourth embodiment)
As shown in FIG. 10, the mobile terminal 80 of the fourth embodiment includes a cylindrical elastic member 82 instead of the first elastic member 32 and the second elastic member 33 of the first embodiment. The configuration is the same as that of the mobile terminal 10 of the first embodiment.

By covering the outer peripheral surface 24A of the conductor member 24 with the cylindrical elastic member 82, the conductor member 24 and the outer peripheral surface 24A can be brought into surface contact.
Furthermore, the elastic member 82 can be brought into surface contact with the chassis 15 by elastically deforming the elastic member 82 by pressing the cylindrical elastic member 82 against the chassis 15 (one side portion 15C).
Thereby, the conduction of the conductor member 24 (that is, the electric wire 21) to the chassis 15 is reliably obtained.

Furthermore, since the first elastic member 32 and the second elastic member 33 can be made unnecessary by using the cylindrical elastic member 82, the number of parts can be reduced and the configuration can be simplified.
In addition, by covering the outer peripheral surface 24 </ b> A of the conductor member 24 with the cylindrical elastic member 82, the elastic member 82 can be reliably positioned on the conductor member 24.

(Fifth embodiment)
As shown in FIG. 11, the portable terminal 90 of 5th Embodiment removes the 2nd elastic member 33 of 1st Embodiment, and the other structure is the same as the portable terminal 10 of 1st Embodiment.

The conductor member 24 is pressed in the direction of arrow C by pressing the conductor member 24 with the housing 11. By pressing the conductor member 24, the first elastic member 32 is pressed by the outer peripheral surface 24 </ b> A of the conductor member 24.
At this time, since the concave arcuate surface 11A is provided on the inner surface of the housing 11, the conductor member 24 is reliably pressed against the first elastic member 32 without the conductor member 24 being displaced from the desired position.
Therefore, the conductor member 24 and the first elastic member 32 can be reliably brought into surface contact.

  According to the mobile terminal 90 of the sixth embodiment, by removing the second elastic member 33, the number of parts can be reduced and the configuration can be simplified, and further, the labor for assembling can be saved.

The mobile terminal according to the present invention is not limited to the above-described embodiments, and can be changed or improved as appropriate.
For example, in the first to fifth embodiments, the example in which the pair of large-diameter portions 25 and 26 are provided on the both end portions 24B and 24C of the conductor member 24 has been described. It is also possible to provide one large diameter part or three large diameter parts.

  Moreover, the portable terminal, housing | casing, chassis, battery pack, 1st circuit board, 2nd circuit board, electric wire, conductor member which were used in 1st Embodiment-5th Embodiment, a pair of large diameter parts, a pair of engagement The shapes and configurations of the portion and the first elastic member are not limited to those illustrated, but can be changed as appropriate.

  INDUSTRIAL APPLICABILITY The present invention is suitable for application to a portable terminal that covers an exposed portion of an electric wire routed inside a casing with a cylindrical conductor member and connects the conductor member to the chassis to ground the electric wire to the chassis. is there.

10, 50, 60, 80, 90 Mobile terminal 11 Housing 15 Chassis 16 Battery pack 17 First circuit board 18 Second circuit board 21 Electric wire 22 Exposed part 24 Conductive member 24C Outer peripheral surface 25, 26 A pair of large diameter parts (large Diameter)
28, 29 A pair of engaging portions (engaging portions)
32, 62 First elastic member (elastic member)
82 Cylindrical elastic member

Claims (3)

A housing,
A metal plate-like chassis housed in the housing;
A battery pack supported by the chassis;
A first circuit board adjacent to the battery pack;
A second circuit board adjacent to the battery pack on the opposite side of the first circuit board;
While connecting the first circuit board and the second circuit board, and an electric wire disposed on the side of the battery pack,
An exposed portion where the core wire is exposed at a predetermined position of the electric wire;
A cylindrical conductor member covering the exposed portion and having conductivity;
An elastic member having surface conductivity with respect to the chassis and the conductor member and having conductivity;
A large-diameter portion provided on the outer peripheral surface of the conductor member;
A portable terminal comprising: an engagement portion that is provided in the chassis and holds the electric wire and the large diameter portion cannot pass therethrough. The mobile terminal according to claim 1,
A portable terminal in which a longitudinal dimension of the conductor member is larger than a length along a longitudinal direction of the conductor member in the elastic member. The mobile terminal according to claim 1,
A portable terminal in which a longitudinal dimension of the conductor member is smaller than a length along a longitudinal direction of the conductor member in the elastic member.

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