JP2010109260A - Mobile electronic apparatus and mold for grommet forming - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile electronic apparatus which can be miniaturized in a flexible substrate and the periphery of an opening part into which a closing member is inserted. <P>SOLUTION: The mobile phone 1 includes a display side case body 5 where a second opening 25 is formed; a second closing member 29 press-inserted into the second opening 25 that closes the second opening 25; and FPC 17, inserted into the second opening 25 by inserting the second closing member 29. The FPC 17 is inclined, with respect to the press-fitting direction of the second closing member 29 in the second closing member 29. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable electronic device such as a mobile phone, a PDA, and a game machine, and a grommet molding die for manufacturing the portable electronic device.

Gasket (blocking member) through which the flexible substrate is inserted in order to protect the flexible substrate inserted through the opening formed in the housing and to prevent moisture and the like from entering the housing from the opening. There is known a technique for press-fitting into the opening (Patent Document 1). In Patent Document 1, the flexible substrate is inserted through the gasket in parallel with the press-fitting direction into the opening of the gasket.
Utility Model Registration No. 3127071

  There may be a case where a predetermined facing member is arranged facing the opening into which the closing member is press-fitted. In this case, the flexible substrate is bent immediately after extending from the closing member.

  Here, when the flexible substrate is bent, the flexible substrate is bent with a certain degree of curvature in order to protect the flexible substrate. As a result, it is necessary to secure a certain amount of space around the bent portion of the flexible substrate.

  Further, when the flexible substrate is bent in contact with the facing member, the facing member is biased by a restoring force that attempts to return the flexible substrate from the bent state to the linear state. When the urging force is large, there is a risk that inconveniences such as dropping or deformation of the facing member occur. Therefore, in order to reduce the restoring force, it is necessary to increase the curvature of the flexible substrate to some extent. As a result, as described above, it is necessary to secure a certain amount of space around the bent portion of the flexible substrate.

  Therefore, the opposing member cannot be adjacent to the opening, and as a result, the portable electronic device cannot be downsized or the space in the housing cannot be effectively used.

  An object of the present invention is to provide a portable electronic device that can be reduced in size around an opening through which a flexible substrate and a closing member are inserted, and a grommet molding die suitable for manufacturing the portable electronic device.

  A portable electronic device according to a first aspect of the present invention includes a first housing having an opening, a closing member that is press-fitted into the opening and closes the opening, and is inserted into the closing member. Thus, the flexible substrate is inserted into the opening, and the flexible substrate is inclined with respect to the press-fitting direction of the closing member inside the closing member.

  Preferably, the portable electronic device has a contacted member disposed in the opening direction of the opening, and the flexible substrate extends from the closing member and then contacts the contacted member. It is bent in a direction further inclined or perpendicular to the press-fitting direction.

  Preferably, the contacted member is a covering member that covers the opening from the outside of the first housing.

  Preferably, the flexible substrate is bent in a direction further inclined or orthogonal to the press-fitting direction in the closing member and extends out of the closing member.

  Preferably, the portable electronic device has a contacted member arranged in the opening direction of the opening, and the closing member has a side surface portion of the contacted member exposed from the opening. The flexible substrate extends from a portion of the side surface exposed from the opening, and a surface of the closing member on the contacted member side is in contact with the contacted member.

  Preferably, the portable electronic device has a covering member that covers the opening from the outside of the first casing, and the contacted member is between the first casing and the covering member. Is a double-sided adhesive member that adheres the covering member and the first housing, and is also adhered to the surface of the closing member on the double-sided adhesive member side.

  Preferably, the portable electronic device includes a second casing that is connected to the first casing so as to be relatively movable, a first electronic component disposed in the first casing, A second electronic component disposed in the second housing, wherein the flexible substrate has a portion on one side with the closing member as a boundary connected to the first electronic component, and the other The side portion is connected to the second electronic component.

  Preferably, a plurality of the flexible substrates are provided, and the plurality of flexible substrates are stacked inside the closing member.

  Preferably, the closing member is fitted into a grommet disposed in the opening through which the flexible substrate is inserted, and an outer peripheral surface facing the inner peripheral surface of the opening of the grommet. An annular packing pressed against the peripheral surface, and a first groove portion and a second groove into which the packing is fitted on one side and the other side of the main surface of the flexible substrate, respectively, on the outer peripheral surface of the grommet The first groove portion and the second groove portion are arranged at positions shifted from each other in the insertion direction of the flexible substrate into the grommet, and sandwich the packing of the first groove portion. Of the two inner walls facing each other, the inner wall on the second groove portion side in the insertion direction is orthogonal to the main surface of the portion of the flexible substrate inserted through the grommet, or Of the two inner walls facing each other across the packing of the second groove, the first groove is closer to the first groove than the angle of intersection. The inner wall is orthogonal to the main surface of the portion of the flexible substrate inserted through the grommet, or is inclined to the side where the opening of the second groove portion is wider than the angle orthogonal.

  Preferably, of the two inner walls of the first groove portion, an inner wall opposite to the second groove portion in the insertion direction is extended to the second groove portion side on the side of the flexible substrate. Of the two inner walls of the second groove portion, the inner wall opposite to the first groove portion in the insertion direction is extended to the first groove portion side on the side of the flexible substrate, These extended portions do not overlap with each other in the direction orthogonal to the main surface of the portion of the flexible substrate inserted through the grommet.

  Preferably, the first casing is disposed in a first space between the first case member and the one surface of the first case member, and is sealed between the first case member and the first case member. And a second case member that forms a second space adjacent to the first space in a direction along the one surface, and the other surface of the first case member. A third case member that constitutes a sealed third space between the first space and the member, wherein the first space and the third space are communicated with each other, and the opening is formed by the first case member. Formed in the opening direction in the opposing direction of the first case member and the second case member, communicating the second space and the third space, the flexible substrate extends from the closing member, The first to third case members extend in directions along the mutually facing surfaces. It is bent to so that.

  A portable electronic device according to a second aspect of the present invention includes a housing in which an opening is formed, a closing member that is press-fitted into the opening and closes the opening, and is inserted through the closing member. A flexible board inserted through the opening, and the flexible board extends from the inside of the closing member to the outside in a state inclined or orthogonal to the press-fitting direction of the closing member.

  A grommet molding die according to a third aspect of the present invention is a grommet forming die for forming a grommet in which a flexible substrate is inserted and an annular packing is fitted in a groove formed on an outer peripheral surface. And a second split mold that forms a cavity between the first split mold and the first split mold and the second split mold. The surface is planar, and the cavity extends along the dividing surface, and can accommodate the flexible substrate in parallel to the dividing surface, and the substrate arranging portion in the extending direction of the substrate arranging portion. A grommet forming portion that is formed so as to include a part and that forms the grommet, and protrudes toward the split surface side on a surface that forms the grommet forming portion of the first split mold, In plan view of the dividing plane A first protrusion that forms part of the groove is formed in a direction that intersects the direction in which the substrate placement portion extends, and the surface that forms the grommet forming portion of the second split mold A second protrusion that protrudes toward the dividing surface, extends in the intersecting direction in plan view of the dividing surface, and forms another part of the groove, and the first protrusion and The second protrusions are provided at positions shifted from each other in the extending direction of the substrate placement portion.

  Preferably, of the two outer walls of the first ridge portion, the outer wall on the second ridge portion side in the direction in which the substrate placement portion extends is orthogonal to the dividing surface or from an angle orthogonal to the dividing surface. Are inclined toward the side where the base of the ridge portion is widened, and the outer wall on the first ridge portion side of the two outer walls of the second ridge portion is divided in the direction in which the substrate placement portion extends. It inclines to the side where the base of the said protrusion part widens rather than the angle orthogonal to a surface or an orthogonal.

  Preferably, of the two outer walls of the first ridge portion, an outer wall opposite to the second ridge portion extends to the second ridge portion side on the side of the substrate placement portion. Of the two outer walls of the second ridge portion, the outer wall opposite to the first ridge portion extends to the first ridge portion side on the side of the substrate placement portion. These extended portions do not overlap each other in the direction perpendicular to the dividing plane.

  According to the present invention, it is possible to reduce the size around the opening through which the flexible substrate and the blocking member are inserted.

  FIG. 1 is a perspective view showing an external appearance of a mobile phone 1 according to an embodiment of the present invention in an open state. FIG. 2 is a perspective view showing the appearance of the mobile phone 1 in a closed state. The mobile phone 1 is configured as a so-called foldable mobile phone, and includes an operation-side housing 3 and a display-side housing 5 that are rotatably connected to each other around a rotation axis RA between an open state and a closed state. It has.

  The operation-side casing 3 and the display-side casing 5 are connected to each other by a connecting portion 6 that is the center of rotation, thereby constituting the casing of the entire mobile phone 1. The operation-side casing 3 and the display-side casing 5 are each formed in a generally thin rectangular parallelepiped shape, and are overlapped with each other in the closed state so that their outlines substantially coincide with each other.

  In the following, the surfaces facing each other and the back surface thereof in the closed state of the operation side housing 3 and the display side housing 5 may be referred to as the facing surface and the back surface. In the operation-side housing 3 and the display-side housing 5, the direction penetrating the opposing surface and the back surface may be referred to as the thickness direction of the housing.

  The operation side housing 3 includes, for example, a microphone 87 for communication (see FIG. 13), a built-in antenna 81 for communication (see FIG. 13), a speaker 85 for notification (see FIG. 13), and an imaging unit 89 (see FIG. 13). 13), an operation unit 7 (FIG. 1) for receiving a user operation is provided.

  The display-side housing 5 is provided with, for example, a speaker 83 for calling (see FIG. 13) and a display unit 9 (FIG. 1) for displaying images and characters on the facing surface of the display-side housing 5.

  The display-side housing 5 includes a front case 11 disposed on the opposite surface side of the display-side housing 5 and a rear case 13 (FIG. 2) disposed on the back side of the display-side housing 5. . The front case 11 and the rear case 13 are fixed to each other with screws or the like while facing each other. Various electronic components are accommodated between the front case 11 and the rear case 13.

  FIG. 3 is a perspective view showing the inside of the display-side housing 5 from the back side by removing the rear case 13 from the display-side housing 5. FIG. 4 is an exploded perspective view showing the flexible printed circuit board (FPC) 17 removed from the state shown in FIG.

  Inside the display side housing 5, a display side circuit board 15 and an FPC 17 connected to the display side circuit board 15 are provided.

  The display side circuit board 15 is configured by, for example, a rigid printed board based on a hard resin. An electronic circuit such as an IC is mounted on the display side circuit board 15 to constitute an electronic circuit. The display side circuit board 15 is arranged in parallel to the front and back surfaces of the display side housing 5.

  The FPC 17 is for connecting the electronic circuit (electronic component) of the operation-side housing 3 and the electronic circuit (electronic component) of the display-side housing 5. By inserting the FPC 17 through the connecting portion 6, the first connection portion 19 (FIG. 4) is disposed in the operation side housing 3 and the second connection portion 21 is disposed in the display side housing 5. The first connecting portion 19 is connected to the operation side circuit board 23 (only a part is shown in FIG. 4) in the operation side housing 3. In addition, the operation side circuit board 23 is arrange | positioned in parallel with the opposing surface and back surface of the operation side housing | casing 3, for example. Further, the second connection portion 21 is connected to the display side circuit board 15. The portion inserted through the connecting portion 6 of the FPC 17 bends or extends as the mobile phone 1 is opened and closed.

  When the FPC 17 is inserted through the connecting portion 6, the FPC 17 is inserted through a first opening (not shown) formed in the operation-side housing 3 and a second opening 25 formed in the display-side housing 5. The first opening is closed by press-fitting the first closing member 27 (FIG. 4) through which the FPC 17 is inserted. The second opening 25 is closed when the second closing member 29 into which the FPC 17 is inserted is press-fitted.

  5 is a cross-sectional view taken along line VV in FIG. The upper side in FIG. 5 is the display unit 9 side.

  The display-side housing 5 has a housing space S1 for housing various electronic components such as the display-side circuit board 15, a communication space S2 formed on the connecting portion 6 side of the housing space S1, and a facing surface of the housing space S1. A recess S3 formed on the side is formed.

  The accommodation space S <b> 1 is formed between the front case 11 and the rear case 13. The accommodation space S1 is sealed. Specifically, the front case 11 is formed with a rib 11r (see also FIG. 3) that protrudes toward the rear case 13 and extends along the outer periphery. The rear case 13 is formed with a groove 13g extending in the same shape as the rib 11r. An annular packing 37 extending in the same shape as the rib 11r and the groove 13g is disposed in the groove 13g. And the space between the front case 11 and the rear case 13 is sealed by crushing the packing 37 arrange | positioned in the groove part 13g by the rib 11r.

  The communication space S <b> 2 is formed between the front case 11 and the rear case 13. The communication space S2 is adjacent to the accommodation space S1 in the direction along the mutually opposing surfaces of the front case 11 and the rear case 13. In the communication space S2, no packing or the like is arranged at the joint of the front case 11 and the rear case 13. That is, the communication space S2 is not sealed.

  The recess S <b> 3 is formed on the front side of the front case 11. A display device 31 constituting the display unit 9 is accommodated in the recess S3. The display device 31 is configured by, for example, a liquid crystal display device or an organic EL display device. The recess S3 is hermetically sealed by fixing the translucent plate 33 to the front case 11 via a double-sided tape 35 such as an adhesive or a double-sided tape. The translucent plate 33 may be regarded as a part of the display-side housing 5 or may be regarded as a separate member from the display-side housing 5.

  The recess S3 and the accommodation space S1 are communicated with each other through the third opening 39. Specifically, the third opening 39 is formed in the front case 11 and opens in the facing direction of the front case 11 and the rear case 13 (the thickness direction of the housing). Further, the third opening 39 is disposed inside a region (accommodating space S1) surrounded by the packing 37 (see also FIG. 3).

  The second opening 25 communicates the communication space S2 and the recess S3. Specifically, the second opening 25 is formed in the front case 11 and opens in the facing direction of the front case 11 and the rear case 13 (in the thickness direction of the housing). Moreover, the 2nd opening part 25 is arrange | positioned on the outer side of the area | region (accommodation space S1) enclosed by the packing 37 (refer also FIG. 3).

  As described above, the sealed space is formed by the recess S3 and the accommodation space S1 communicated through the third opening 39, and the second opening 25 that communicates the sealed space and the communication space S2 is the second opening 25. 2 Closed by the closing member 29.

  When the FPC 17 extends from the operation-side housing 3 to the display-side housing 5 via the connecting portion 6, the FPC 17 sequentially passes through the communication space S2, the second opening 25, the recess S3, and the third opening 39. It reaches the accommodation space S1. And the 2nd connection part 21 of FPC17 is connected to the display side circuit board 15 accommodated in accommodation space S1.

  The FPC 17 passes through the second opening 25 (second closing member 29) obliquely with respect to the opening direction of the second opening 25. A portion of the FPC 17 extending from the second closing member 29 toward the concave portion S3 is in a direction along the light transmitting plate 33 while approaching or contacting the light transmitting plate 33 (a direction orthogonal to the press-fitting direction of the second closing member 29). It bends and extends. Further, the extending portion of the FPC 17 extends along the surface of the rear case 13 that faces the front case 11 after passing through the third opening 39. The portion of the FPC 17 that extends from the second closing member 29 to the communication space S2 side is close to or in contact with the surface of the rear case 13 that faces the front case 11, and the direction along the surface (the press-fitting of the second closing member 29). (Bend in a direction perpendicular to the direction).

  The second closing member 29 has a second grommet 45 and a second packing 47 fitted on the outer peripheral surface of the second grommet 45 (surface facing the inner peripheral surface of the second opening 25).

  The second grommet 45 is made of resin, for example. The second grommet 45 is generally formed in a flat columnar shape, and a groove portion 49 into which the second packing 47 is fitted is formed on the outer peripheral surface. The second packing 47 is constituted by, for example, an O-ring formed of rubber. When the second packing 47 is elastically deformed, the second closing member 29 is press-fitted into the second opening 25.

  The second closing member 29 is press-fitted into the second opening 25 in the opening direction (penetration direction) of the second opening 25. On the other hand, the FPC 17 is inserted into the second grommet 45 obliquely with respect to the press-fitting direction of the second grommet 45. Therefore, as described above, the FPC 17 is inserted into the second opening 25 obliquely with respect to the opening direction of the second opening 25.

  The first closing member 27 has the same configuration as that of the second closing member 29, and includes a first grommet 44 (FIG. 6) and a first packing (not shown) fitted to the first grommet 44. However, the FPC 17 is inserted through the first closing member 27 in parallel with the press-fitting direction of the first closing member 27 (see FIG. 6).

  FIG. 6 is a perspective view showing the FPC 17 in a developed state.

  The FPC 17 is formed in a long strip shape, and is provided with a first connection portion 19 at one end and a second connection portion 21 at the other end. Further, the first grommet 44 is provided in a portion of the FPC 17 on the first connection portion 19 side. The second grommet 45 is provided on the second connection portion 21 side of the FPC 17.

  The first connector 19 is provided with a first connector 41 connected to the operation side circuit board 23. The second connector 21 is provided with a second connector 43 that is connected to the display-side circuit board 15. The first connector 41 and the second connector 43 are mounted on the same main surface in the FPC 17. As shown in FIG. 4, the first connector 41 is connected to the operation side circuit board 23 in a state where the first connection portion 19 faces the operation side circuit board 23. As shown in FIG. 3, the second connector 43 is connected to the display-side circuit board 15 with the second connecting portion 21 facing the display-side circuit board 15.

  FIG. 7 is an enlarged view of the region VII in FIG. 6, in other words, a perspective view around the second grommet 45. FIG. 8 is a side view around the second grommet 45.

  The second grommet 45 is formed in, for example, a rectangular shape (or an oval shape) whose corners are chamfered when viewed in the press-fitting direction of the second opening 25. The planar shape of the second opening 25 is the same as that of the second grommet 45.

  The groove portion 49 for fitting the second packing 47 protrudes from the outer peripheral side of the second grommet 45 and includes a first flange 51 and a second flange 53 facing each other. The opposing direction of the first flange 51 and the second flange 53, in other words, the axial direction of the ring of the groove portion 49 is parallel to the press-fitting direction of the second grommet 45 and is inclined with respect to the FPC 17.

  FIG. 9 is a perspective view for explaining a method of forming the first grommet 44 and the second grommet 45.

  The first grommet 44 and the second grommet 45 are formed by filling the mold 151 with a molten resin in a state where the FPC 17 is disposed in the mold 151. Note that FIG. 9 illustrates a mold when two sets of the first grommet 44 and the second grommet 45 are formed by one mold. In FIG. 9, one set of the two sets of FPCs 17 is not shown.

  The mold 151 includes a first split mold 153 (see FIG. 11) and a second split mold 155. The cavity 157 that forms the first grommet 44 and the second grommet 45 is formed between the first split mold 153 and the second split mold 155. The dividing surface 151a that divides the mold 151 into the first divided mold 153 and the second divided mold 155 is set in a planar shape.

  The cavity 157 includes a substrate placement portion 159 for placing the FPC 17, a first grommet forming portion 161 for forming the first grommet 44, and a second grommet forming portion 163 for forming the second grommet 45. Have.

  FIG. 10 is an enlarged view of the region X of FIG. 9, in other words, a perspective view showing the periphery of the second grommet.

  As shown in FIGS. 9 and 10, the FPC 17 is arranged in a planar shape in the substrate placement unit 159 in parallel with the dividing surface 151 a. Therefore, as described above, in order to insert the FPC 17 obliquely with respect to the press-fitting direction of the second grommet 45, as shown in FIG. 10, the second grommet 45 is inclined in the press-fitting direction with respect to the dividing surface 151a. To be formed.

  FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 10, in other words, a cross-sectional view of the mold 151 corresponding to FIG.

  The substrate placement portion 159 includes a recess formed on the split surface 151 a of the first split mold 153 and a recess formed on the split surface 151 a of the second split mold 155. The substrate placement portion may be formed by a recess formed in one of the first split mold and the second split mold.

  The second grommet forming part 163 is configured by a recess of the first split mold 153 and a recess of the second split mold 155. The second grommet forming portion 163 includes a part of the substrate placement portion 159 in the extending direction of the substrate placement portion 159 so that the FPC 17 is inserted through the second grommet 45 (enlarged in diameter). .

  As described above, the groove 49 of the second grommet 45 is inclined with respect to the main surface of the FPC 17 in the axial direction of the ring. Further, the substrate placement unit 159 is configured to be able to place the main surface of the FPC 17 in parallel with the division surface 151a. Therefore, the axial direction of the ring of the groove portion 49 is inclined with respect to the dividing surface 151a. In other words, the recess direction of the groove 49 is inclined with respect to the extrusion direction of the molded product from the mold. Therefore, if the second grommet 45 has the same shape as the grommet in which the axial direction of the groove portion 49 is parallel to the main surface of the FPC 17, an undercut portion in which the molded product is caught by the mold is formed in the groove portion 49. Therefore, in the present embodiment, the shape of the second grommet 45 is a shape in which the undercut portion is not formed. Specifically, it is as follows.

  As shown in FIG. 8, the groove part 49 has a first divided groove part 49a and a second divided groove part 49b on one side and the other side of the main surface of the FPC 17, respectively. The first divided groove portion 49 a and the second divided groove portion 49 b are arranged at positions shifted from each other in the insertion direction of the FPC 17 into the second grommet 45.

  The first divided groove portion 49a includes a first inner inner wall 51a that is the central side (second divided groove portion 49b side) of the second grommet 45 in the insertion direction of the FPC 17 into the second grommet 45, and a first outer side that is the opposite side. It is comprised by the inner wall 53a. If the first inner inner wall 51a is orthogonal to the press-fitting direction of the second grommet 45 in the same manner as the first outer inner wall 53a, an undercut portion on which the first divided mold 153 (FIG. 11) is caught is formed. Will be. Therefore, the first inner inner wall 51a is formed to be orthogonal to the main surface of the portion inserted through the second grommet 45 of the FPC 17.

  Similarly, the second divided groove portion 49b is a second inner inner wall 53b that is the center side (first divided groove portion 49a side) of the second grommet 45 in the insertion direction of the FPC 17 into the second grommet 45, and the opposite side. It is comprised by the 2nd outer side inner wall 51b. The second inner inner wall 53b is formed so as to be orthogonal to the main surface of the portion inserted through the second grommet 45 of the FPC 17 so that the undercut portion is not formed, similarly to the first inner inner wall 51a. .

  The first inner inner wall 51a and the second inner inner wall 53b may be further inclined from the angle perpendicular to the main surface of the portion inserted through the second grommet 45 of the FPC 17 to the side where the opening of the groove 49 is widened. Is possible. However, in this case, since the second packing 47 is easily detached from the groove portion 49, an angle orthogonal to the main surface of the portion inserted through the second grommet 45 of the FPC 17 is preferable as described above.

  Further, the angles of the first outer inner wall 53a and the second outer inner wall 51b may be appropriately set within a range in which the undercut portion is not formed. FIG. 8 illustrates a case where the first outer inner wall 53a and the second outer inner wall 51b are formed at right angles to the press-fitting direction of the second grommet 45.

  Corresponding to the first inner inner wall 51a and the second inner inner wall 53b as described above, the mold 151 is formed as follows.

  As shown in FIG. 11, on the surface constituting the second grommet forming portion 163 of the first split mold 153, the first protrusion 165 that forms the first split groove portion 49a (FIG. 8) is formed. . The first protrusion 165 protrudes toward the dividing surface 151a, and extends in a direction (more specifically, a direction orthogonal) intersecting the extending direction of the substrate placement portion 159 in plan view of the dividing surface 151a.

  Similarly, the 2nd protrusion 167 which forms the 2nd division groove part 49b (FIG. 8) is formed in the surface which comprises the 2nd grommet formation part 163 of the 2nd division mold 155. FIG. The second protrusion 167 protrudes toward the dividing surface 151a and extends in a direction (more specifically, a direction orthogonal) intersecting the direction in which the substrate placement portion 159 extends in a plan view of the dividing surface 151a.

  The first ridge portion 165 and the second ridge portion 167 are arranged at positions shifted from each other in the extending direction of the substrate arrangement portion 159. This corresponds to the first divided groove portion 49a and the second divided groove portion 49b being arranged at positions shifted from each other in the insertion direction of the FPC 17 into the second grommet 45.

  The first ridge portion 165 includes a first inner outer wall 165a that becomes the center side (second ridge portion 167 side) of the second grommet forming portion 163 in the extending direction of the substrate placement portion 159, and a first outer side on the opposite side. And an outer wall 165b. The first inner outer wall 165a corresponds to the first inner inner wall 51a of the first divided groove portion 49a, and the first outer outer wall 165b corresponds to the first outer inner wall 53a of the first divided groove portion 49a.

  The first inner outer wall 165a is orthogonal to the dividing surface 151a in the direction in which the substrate placement portion 159 extends. This corresponds to the fact that the first inner inner wall 51a is orthogonal to the main surface of the portion inserted through the second grommet 45 of the FPC 17.

  Similarly, the second ridge portion 167 includes a second inner outer wall 167a that becomes the center side (first ridge portion 165 side) of the second grommet forming portion 163 in the extending direction of the substrate placement portion 159, and the opposite side. And a second outer outer wall 167b. The second inner outer wall 167a corresponds to the second inner inner wall 53b of the second divided groove portion 49b, and the second outer outer wall 167b corresponds to the second outer inner wall 51b of the second divided groove portion 49b.

  The second inner outer wall 167a is orthogonal to the dividing surface 151a in the direction in which the substrate placement portion 159 extends. This corresponds to the fact that the second inner inner wall 53b is orthogonal to the main surface of the portion inserted through the second grommet 45 of the FPC 17.

  In addition, the 1st inner side outer wall 165a may further incline from the angle orthogonal to the division surface 151a to the side where the root of the 1st protrusion part 165 expands. Similarly, the second inner outer wall 167a may be further inclined from the angle orthogonal to the dividing surface 151a to the side where the root of the second protrusion 167 is widened.

  In addition, the angles of the first outer outer wall 165b and the second outer outer wall 167b may be appropriately set within a range where the undercut portion is not formed. FIG. 11 illustrates the case where the first outer outer wall 165b and the second outer outer wall 167b are formed at right angles to the press-fitting direction of the second grommet 45.

  Further, the second grommet 45 is formed so that an undercut portion is not formed also on the side of the FPC 17. Specifically, it is as follows.

  As shown in FIG. 7, the first flange 51 has a notch 51 c formed by notching a portion on the first dividing groove 49 a side and on the side of the FPC 17. In other words, as shown in FIG. 8, the second outer inner wall 51b of the second divided groove portion 49b extends to the first divided groove portion 49a side on the side of the FPC 17, but reaches the first divided groove portion 49a. do not do.

  Similarly, as shown in FIGS. 7 and 8, the second flange 53 has a cutout portion 53c formed by cutting out a portion on the second divided groove portion 49b side and on the side of the FPC 17. In other words, as shown in FIG. 8, the first outer inner wall 53a of the first divided groove portion 49a extends to the second divided groove portion 49b side on the side of the FPC 17, but reaches the second divided groove portion 49b. do not do.

  And the part extended to the 1st division groove part 49a side of the 2nd outside inner wall 51b and the part extended to the 2nd division groove part 49b side of the 1st outside inner wall 53a are inserted in the 2nd grommet 45 of FPC17. They do not overlap with each other in the direction perpendicular to the main surface of the formed portion.

  By adopting such a shape, it is possible to configure a mold in which an undercut portion does not occur as follows.

  12 is a cross-sectional view of the mold 151 taken along line XII-XII in FIG. That is, it is sectional drawing of the part corresponding to the side part of FPC17 of the 1st flange 51 and the 2nd flange 53 among the metal mold | die 151. FIG.

  As can be understood from the comparison between FIG. 11 and FIG. 12, the first outer outer wall 165 b of the first protrusion 165 extends to the second protrusion 167 side on the side of the substrate placement portion 159. This corresponds to the fact that the first outer inner wall 53a of the first dividing groove portion 49a is extended to the second dividing groove portion 49b side on the side of the FPC 17 in FIG.

  Similarly, the second outer outer wall 167b of the second protrusion 167 extends to the first protrusion 165 side on the side of the substrate placement portion 159. This corresponds to the fact that the second outer inner wall 51b of the second divided groove portion 49b is extended to the first divided groove portion 49a side on the side of the FPC 17 in FIG.

  And the part extended to the 2nd protrusion part 167 side of the 1st outer side outer wall 165b and the part extended to the 1st protrusion part 165 side of the 2nd outer side outer wall 167b are division surfaces 151a (FIG. 11). ) Do not overlap each other in the direction perpendicular to.

  Accordingly, in the first split mold 153, a space filled with the molding material is not formed on the side opposite to the split surface 151a of the first outer outer wall 165b. In the second split mold 155, a space filled with the molding material is not formed on the opposite side of the second outer outer wall 167b from the split surface 151a. That is, the first split mold 153 and the second split mold 155 do not have an undercut portion.

  FIG. 13 is a block diagram showing an example of the configuration of the signal processing system of the mobile phone 1.

  The mobile phone 1 includes a CPU 71, a memory 73, a communication processing unit 75, an acoustic processing unit 77, and an image processing unit 79. Each of these units includes an IC or the like provided in the operation side housing 3 and the display side housing 5. The electronic component arranged in the operation side housing 3 and the electronic component arranged in the display side housing 5 are connected to each other via the FPC 17.

  The CPU 71 and the memory 73 function as a control unit that performs predetermined calculations based on signals from various units such as the operation unit 7 and controls various units such as the image processing unit 79.

  The communication processing unit 75 performs communication with other portable terminal devices and servers via a communication system (telephone network or the Internet) by wireless communication using radio waves. Specifically, the communication processing unit 75 modulates various data such as sound data and image data processed by the CPU 71 and transmits the modulated signal via the antenna 81. The communication processing unit 75 demodulates the signal received via the antenna 81 and outputs the demodulated data to the CPU 71.

  The acoustic processing unit 77 converts the acoustic data from the CPU 71 into an electrical signal, and outputs the signal to the speaker 83 for call or the speaker 85 that outputs a notification sound or the like. The speaker 83 and the speaker 85 convert the electric signal from the sound processing unit 77 into sound and output the sound. On the other hand, the microphone 87 converts the input sound into an electrical signal and outputs the signal to the sound processing unit 77. The acoustic processing unit 77 converts the electrical signal from the microphone 87 into acoustic data, and outputs the acoustic data to the CPU 71.

  The image processing unit 79 converts the image data from the CPU 71 into an image signal and outputs the signal to the display unit 9. In addition, the image processing unit 79 converts the imaging signal (image data) output from the imaging unit 89 into image data of a predetermined format, and outputs the image data to the CPU 71.

  According to the above embodiment, the mobile phone 1 includes the display-side housing 5 in which the second opening 25 is formed, and the second closing member that is press-fitted into the second opening 25 to close the second opening 25. 29 and the FPC 17 inserted into the second opening 25 by being inserted through the second closing member 29. The FPC 17 is inclined with respect to the press-fitting direction of the second closing member 29 inside the second closing member 29.

  Therefore, the FPC 17 is easily extended from the second closing member 29 in a state inclined with respect to the press-fitting direction of the second closing member 29. As a result, for example, the FPC 17 can be extended in a direction different from the press-fitting direction of the second closing member 29 without bending the FPC 17. Further, for example, when the portion extending from the second closing member 29 of the FPC 17 is bent in a direction inclined with respect to the press-fitting direction or in a direction orthogonal thereto, the bending angle of the bent portion is determined by the FPC 17 from the second closing member 29. It becomes smaller than the case of extending in parallel with the press-fitting direction. Then, the necessary space around the bent portion is reduced. By eliminating the need for the bent portion or reducing the necessary space around the bent portion, the inner surface of the housing or other member can be brought close to the second closing member 29, and the mobile phone 1 can be downsized. Figured.

  The mobile phone 1 includes a light transmitting plate 33 (or rear case 13) disposed in the opening direction of the second opening 25. After extending from the second closing member 29, the FPC 17 is bent in a direction perpendicular to the press-fitting direction while abutting the light transmitting plate 33. Therefore, a predetermined contacted member is brought close to the second opening 25 to reduce the size of the display-side housing 5 or to effectively use the internal space of the display-side housing 5.

  The abutted member is a translucent plate 33 that covers the second opening 25 from the outside of the display-side housing 5. The translucent plate 33 receives a restoring force for returning from the bent state of the FPC 17 to the linear state, but the restoring force is reduced by reducing the bending angle of the FPC 17. Accordingly, it is possible to reduce the size of the display-side casing 5 while suppressing the peeling of the light transmitting plate 33 from the front case 11.

  Note that the front case 11 and the translucent plate 33 constituting the recess S3 can be regarded as a casing, and the rear case 13 can be regarded as a covering member that covers the second opening 25 from the outside of the casing. In this case, since the second opening 25 is covered with the rear case 13 disposed in the vicinity, it is possible to prevent moisture and the like from entering the recess S3.

  The mobile phone 1 includes an operation-side housing 3 connected to the display-side housing 5 so as to be relatively movable, a display-side circuit board 15 disposed in the display-side housing 5, and the operation-side housing 3. And an operation-side circuit board 23 disposed on the operation side. The FPC 17 is connected to the display side circuit board 15 at one side of the second closing member 29 and connected to the operation side circuit board 23 at the other side. Accordingly, the display-side housing 5 is waterproofed independently from the operation-side housing 3 while being in communication with the operation-side housing 3 through the second opening 25. Further, if the FPC 17 is bent at a large bending angle at the extended portion of the second closing member 29, the FPC 17 is further deformed by the bending accompanying the opening and closing of the housing, so that the burden on the FPC 17 is increased. However, in the present embodiment, the FPC 17 can be extended from the second closing member 29 without the bent portion or with the bent angle being reduced, so that the periphery of the connecting portion 6 is reduced while reducing the load on the FPC 17. Can be miniaturized.

  The display-side housing 5 includes a front case 11 and a rear case 13 disposed to face the inner surface (one side surface) of the front case 11. The rear case 13 forms a sealed housing space S1 between the front case 11 and a communication space S2 adjacent to the housing space S1 in the direction along the inner surface of the front case 11. The display-side housing 5 is disposed to face the outer surface (the other surface) of the front case 11, and has a light-transmitting plate 33 that forms a hermetically sealed recess S <b> 3 between the front case 11. The accommodation space S1 and the recess S3 communicate with each other. The second opening is formed in the front case 11 and opens in the facing direction of the front case 11 and the rear case 13 to connect the accommodation space S1 and the communication space S2. After extending from the second closing member 29, the FPC 17 is bent so as to extend in the direction along the mutually opposing surfaces of the front case 11, the rear case 13, and the light transmitting plate 13.

  Therefore, the structure which press-fits the 2nd closure member 29 in the opposing direction of the front case 11 and the rear case 13 is implement | achieved, and thickness reduction of the display side housing | casing 5 is achieved. Further, as in the embodiment, the FPC 17 can be extended to the accommodation space S1 through the third opening 39 that communicates the recess S3 and the accommodation space S1. Therefore, the FPC 17 may be arranged on either the one side or the other side of the front case 11, and the degree of design freedom is high. As a result, for example, it is also easy to mount the first connector 41 and the second connector 43 only on one side of the FPC 17 as in the present embodiment.

  In the above embodiment, the mobile phone 1 is an example of the portable electronic device of the present invention, the second opening 25 is an example of the opening of the present invention, and the display-side housing 5 is the first of the present invention. The FPC 17 is an example of the flexible substrate of the present invention, the translucent plate 33 or the rear case 13 is an example of the contacted member and the covering member of the present invention, and the double-sided tape 35 is the present invention. The operation side housing 3 is an example of the second housing of the present invention, the display side circuit board 15 is an example of the first electronic component of the present invention, and the operation side circuit The substrate 23 is an example of the second electronic component of the present invention, the second grommet 45 is an example of the grommet of the present invention, the second packing 47 is an example of the packing of the present invention, and the first dividing groove 49a and The second divided groove portion 49b includes the first groove portion and the first groove portion of the present invention. The front case 11 is an example of the first case member of the present invention, the rear case 13 is an example of the second case member of the present invention, and the translucent plate 33 is the third case of the present invention. The housing space S1 is an example of the first space of the present invention, the communication space S2 is an example of the second space of the present invention, and the recess S3 is an example of the third space of the present invention.

  The present invention is not limited to the above embodiment, and may be implemented in various aspects.

  The mobile electronic device is not limited to a mobile phone. For example, the portable electronic device may be a notebook computer, a PDA, a game machine, or a camera. Further, the casing of the portable electronic device is not limited to a folding type.

  The case may be an integrated structure (only one case), or two or more cases are connected to each other so as to be relatively movable by a method other than the folding type (sliding type, etc.). It may be a thing. Further, the casing is not limited to the casing constituting the appearance of the electronic device, and may be a casing included in the casing. For example, the casing may be a casing included in a portable electronic device having a casing constituting the appearance and a highly waterproof casing included in the casing. The opening may communicate between the inside and outside of the housing, or may communicate two spaces in the housing.

  FIG. 14A is a schematic cross-sectional view showing a second closing member 229 according to the first modification of the present invention.

  The second grommet 245 of the second closing member 229 is exposed from the second opening 25 on the side of the translucent plate 33 and the side of the rear case 13 in the press-fitting. The FPC 217 is bent in the second grommet 245 and extends from a portion exposed from the second opening 25 on the side surface of the second grommet 245. The double-sided tape 235 that bonds the front case 11 and the light transmitting plate 33 is also bonded to the surface of the second grommet 245 on the light transmitting plate 33 side between the light transmitting plate 33 and the second grommet 245.

  According to this modification, the FPC 17 is bent in the direction perpendicular to the press-fitting direction in the second closing member 229 and extends out of the second closing member 229. Therefore, the restoring force for returning the FPC 17 from the bent state to the linear state is not transmitted to the outside of the second closing member 229. As a result, inconveniences such as dropping of the translucent plate 33 due to the restoring force of the FPC 17 are eliminated.

  Further, the FPC 17 extends from a portion exposed from the second opening 25 on the side surface of the second closing member 229. Therefore, the translucent plate 33 can be indirectly brought into contact with the end surface of the second closing member 229 or the rear case 13 can be brought into contact with the end surface. As a result, the second closing member 229 can be reliably fixed. Furthermore, the light-transmitting plate 33 can be securely fixed by adhering the double-sided tape 235 to the surface of the second closing member 229 on the light-transmitting plate 33 side.

  As shown in the above modification, the flexible substrate may be bent in the closing member, may be extended from the side surface of the closing member, or is closed in a state orthogonal to the press-fitting direction of the closing member. You may extend from a member.

  The present invention can be understood from a second viewpoint that the flexible substrate extends from the inside of the closing member to the outside in a state inclined or orthogonal to the press-fitting direction of the closing member. In this respect, the flexible substrate may or may not be inclined inside the blocking member.

  FIG. 14B is a schematic cross-sectional view showing a second closing member 329 according to a second modification of the present invention. The second modified example relates to the second viewpoint.

  In the second closing member 329, most of the FPC 317 is parallel to the press-fitting direction in the second grommet 345. However, the FPC 317 extends from the second grommet 345 while being inclined with respect to the press-fitting direction by bending immediately before extending from the second grommet 345. Also in the second modified example, the bending angle after extending from the second grommet 345 of the FPC 317 can be reduced.

  FIG.14 (c) is typical sectional drawing which shows the 2nd obstruction | occlusion member 429 of the 3rd modification of this invention. The third modified example relates to the second viewpoint.

  In the second closing member 429, one end of the FPC 417 extends from the second grommet 445 in a state orthogonal to the press-fitting direction, but the other end extends from the second grommet 445 in a state parallel to the press-fitting direction. It is extended. Such a mode is also effective when the FPC 417 needs to be bent only on one side of the opening.

  FIG. 14D is a schematic cross-sectional view showing a fourth modification of the present invention.

  In this modified example, a plurality of stacked FPCs 517A and 517B (hereinafter, A and B may be omitted) are inserted into the second grommet 45 (two are illustrated in FIG. 14D). Yes. When a plurality of FPCs 517 are laminated in this way, even if the second opening 25 is closed by the second closing member 29, there is a possibility that moisture passes through the second opening 25 from the gap between the FPCs 517. is there.

  However, since the FPC 517 is inclined with respect to the press-fitting direction and is inserted into the second grommet 45, the second grommet is compared with a case where the FPC 517 is inserted through the second grommet 45 in parallel to the press-fitting direction. The creepage distance in 45 is long. Therefore, moisture is prevented from passing through the second opening 25 through the gap between the FPCs 517, and the waterproof function is improved.

  The mold for forming the grommet may be appropriately configured according to the shape of the grommet. Moreover, also when comprising the grommet similar to embodiment, the metal mold | die which forms the said grommet is not limited to the metal mold | die of embodiment.

  Fig.15 (a) is typical sectional drawing which shows an example of the metal mold | die which forms the 2nd grommet 245 of the 1st modification shown in Fig.14 (a).

  The mold 251 includes a first divided mold 252, a second divided mold 253, a third divided mold 254, and a fourth divided mold 255. The FPC 217 is disposed between the dies along the dividing surfaces of these dies. These molds are relatively moved in four directions indicated by arrows y1 to y4. Therefore, the FPC 217 can be held between the molds in a bent state.

  FIG. 15B is a schematic cross-sectional view showing another mold for forming the second grommet 45 of the embodiment.

  In the mold 351, the divided surfaces 351a of the first divided mold 353 and the second divided mold 355 are not formed in a planar shape. Further, the FPC 17 is disposed between the molds along the dividing surface 351a. By doing so, the axial direction of the ring of the groove portion 49 of the second grommet 45 is parallel to the dividing surface 351a, and the FPC 17 is inclined with respect to the press-fitting direction while avoiding the formation of an undercut portion. Can do.

  However, since the mold 151 of the embodiment can hold the FPC 17 between the molds while maintaining a straight shape, the FPC 17 can be accurately positioned with respect to the second grommet 45 and a product can be formed with high accuracy. .

  The closing member is not limited to one having a grommet and a packing. For example, the grommet may be formed by an elastic member, and the packing may be omitted.

  The contacted member and the covering member are not limited to those constituting a casing or the appearance of a portable electronic device. For example, an electronic component such as a shield case or a circuit board provided inside the housing may be used.

  The first electronic component and the second electronic component are not limited to the circuit board, and may be a speaker, a microphone, or a display device, for example.

1 is an external perspective view showing a mobile phone according to an embodiment of the present invention in an open state. The external appearance perspective view which shows the mobile telephone of FIG. 1 in a closed state. The perspective view which shows the inside of the housing | casing of the mobile telephone of FIG. 1 from the back side. The disassembled perspective view which removes and shows FPC from the state of FIG. Sectional drawing in the VV line | wire of FIG. The perspective view which expand | deploys and shows FPC of FIG. The enlarged view in the area | region VII of FIG. The side view of the 2nd grommet of FIG. The perspective view explaining the formation methods of the 2nd grommet etc. which are provided in FPC of Drawing 6. The enlarged view of the area | region X of FIG. Sectional drawing in the XI-XI line | wire of FIG. Sectional drawing of the metal mold | die in the XII-XII line | wire of FIG. The block diagram which shows an example of a structure of the signal processing system of the mobile telephone of FIG. The typical sectional view showing the grommet concerning the modification of the present invention. The typical sectional view showing the metallic mold concerning the modification of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile telephone (mobile electronic device), 5 ... Display side housing | casing (1st housing | casing) 25 ... 2nd opening part, 29 ... Closure member, 33 ... Flexible printed circuit board (FPC: flexible substrate).

Claims (15)

A first housing having an opening formed therein;
A closing member that is press-fitted into the opening and closes the opening;
A flexible substrate inserted through the opening by being inserted through the blocking member;
Have
The flexible substrate is a portable electronic device that is inclined with respect to a press-fitting direction of the closing member inside the closing member. A contacted member disposed in the opening direction of the opening,
The portable electronic device according to claim 1, wherein the flexible substrate is extended in a direction further inclined or orthogonal to the press-fitting direction while being in contact with the contacted member after extending from the closing member. machine. The portable electronic device according to claim 2, wherein the contacted member is a covering member that covers the opening from the outside of the first housing. The portable electronic device according to claim 1, wherein the flexible substrate is bent in a direction further inclined or perpendicular to the press-fitting direction in the closing member and extends out of the closing member. A contacted member disposed in the opening direction of the opening,
The closing member has a side surface where the contacted member side portion is exposed from the opening,
The flexible substrate extends from a portion exposed from the opening on the side surface,
The portable electronic device according to claim 1, wherein a surface of the closing member on the contacted member side is in contact with the contacted member. A covering member that covers the opening from the outside of the first housing;
The abutted member is a double-sided adhesive member that is disposed between the first casing and the covering member and adheres the covering member and the first casing, and the both surfaces of the closing member. The portable electronic device according to claim 5, wherein the portable electronic device is also bonded to a surface on the adhesive member side. A second housing coupled to the first housing so as to be relatively movable;
A first electronic component disposed in the first housing;
A second electronic component disposed in the second housing;
Have
7. The flexible substrate has one portion connected to the first electronic component with the closing member as a boundary, and the other portion connected to the second electronic component. The portable electronic device of Claim 1. A plurality of the flexible substrates are provided,
The portable electronic device according to any one of claims 1 to 7, wherein the plurality of flexible boards are stacked inside the closing member. The closing member is
A grommet that is inserted through the flexible substrate and disposed in the opening;
An annular packing that is fitted to the outer peripheral surface of the grommet that faces the inner peripheral surface of the opening, and is pressed against the inner peripheral surface of the opening;
Have
On the outer peripheral surface of the grommet, a first groove portion and a second groove portion into which the packing is fitted are formed on one side and the other side of the main surface of the flexible substrate, respectively.
The first groove portion and the second groove portion are arranged at positions shifted from each other in the insertion direction of the flexible substrate into the grommet,
Of the two inner walls facing each other across the packing of the first groove portion, the inner wall on the second groove portion side in the insertion direction is orthogonal to the main surface of the portion of the flexible substrate inserted into the grommet. Or inclined to the side where the opening of the first groove portion is wider than the angle orthogonal to each other,
Of the two inner walls facing each other across the packing of the second groove portion, the inner wall on the first groove portion side in the insertion direction is orthogonal to the main surface of the portion of the flexible substrate inserted into the grommet. Or the portable electronic device of any one of Claims 1-8 in which the opening of a said 2nd groove part inclines to the side which expands rather than the angle which orthogonally crosses. Of the two inner walls of the first groove part, the inner wall opposite to the second groove part in the insertion direction is extended to the second groove part side on the side of the flexible substrate,
Of the two inner walls of the second groove portion, the inner wall on the opposite side to the first groove portion in the insertion direction is extended to the first groove portion side on the side of the flexible substrate,
The portable electronic device according to claim 9, wherein these extended portions do not overlap each other in a direction orthogonal to a main surface of a portion of the flexible substrate inserted through the grommet. The first housing is
A first case member;
The first case member is disposed so as to face one surface of the first case member, and is sealed between the first case member and the first space adjacent to the first space in the direction along the one surface. A second case member constituting two spaces;
A third case member that is disposed opposite to the other surface of the first case member and that constitutes a sealed third space between the first case member and
The first space and the third space are in communication with each other;
The opening is formed in the first case member, opens in a facing direction of the first case member and the second case member, and communicates the second space and the third space,
The flexible substrate is bent so as to extend in a direction along the mutually facing surfaces of the first to third case members after extending from the closing member. Portable electronic devices. A housing in which an opening is formed;
A closing member that is press-fitted into the opening and closes the opening;
A flexible substrate inserted through the opening by being inserted through the blocking member;
Have
The flexible substrate is a portable electronic device that extends from the inside of the closing member to the outside in a state inclined or orthogonal to the press-fitting direction of the closing member. A grommet forming mold for forming a grommet in which a flexible substrate is inserted and an annular packing is fitted in a groove formed on an outer peripheral surface,
A first split mold;
A second split mold forming a cavity with the first split mold;
Have
The split surfaces of the first split mold and the second split mold are planar,
The cavity is
A substrate placement portion that extends along the dividing surface and can accommodate the flexible substrate in parallel to the dividing surface;
A grommet forming part that is formed so as to include a part of the substrate arranging part in the extending direction of the substrate arranging part and forms the grommet;
Have
A surface constituting the grommet forming portion of the first split mold protrudes toward the split surface, extends in a direction intersecting with a direction in which the substrate placement portion extends in a plan view of the split surface, and A first ridge that forms part is formed;
A surface constituting the grommet forming portion of the second split mold protrudes toward the split surface, extends in the intersecting direction in a plan view of the split surface, and forms another part of the groove. A second ridge is formed,
The said 1st protrusion part and the said 2nd protrusion part are provided in the position mutually shifted | deviated in the direction where the said board | substrate arrangement | positioning part is extended. Of the two outer walls of the first ridge portion, the outer wall on the second ridge portion side in the direction in which the substrate placement portion extends is orthogonal to the dividing surface, or more than the angle orthogonal to the dividing surface. Inclined to the side where the root of the part widens
Of the two outer walls of the second ridge portion, the outer wall on the first ridge portion side in the direction in which the substrate placement portion extends is orthogonal to the dividing surface, or more than the angle orthogonal to the dividing surface. The grommet molding die according to claim 13, wherein the base of the portion is inclined toward the side of widening. Of the two outer walls of the first ridge, the outer wall opposite to the second ridge is extended to the second ridge on the side of the substrate placement portion,
Of the two outer walls of the second ridge portion, the outer wall opposite to the first ridge portion is extended to the first ridge portion side on the side of the substrate placement portion,
The mold for grommet forming according to claim 14, wherein these extended portions do not overlap each other in a direction perpendicular to the dividing surface.

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