JP2012104962A - Terminal device housing and the terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sealability of a housing which forms a device mounting space by assembling two cases.SOLUTION: An inner case 10 and an outer case 20 are assembled through a sheet like adhesive material that is a double sided adhesive waterproof tape 30 to form a substrate incorporating part 16 in a housing of a portable phone 1. In the housing, a region in which four grooves 22 are provided is provided on a waterproof tape application surface 21 in the outer case 20.

Description

  The present invention relates to a terminal device casing and a terminal device configured by bonding two cases together with an adhesive tape.

  In recent years, in the technical field of mobile terminal devices such as mobile phones, miniaturization and high functionality have progressed. For example, mobile terminal devices having a waterproof function have been developed.

  Conventionally, there has been proposed a technique for securing waterproofness by bringing the parts of the mobile terminal device into close contact with each other using a waterproof tape.

  For example, in Patent Document 1, a flat region provided between an exterior wall and an electronic component holder is used as a waterproof tape member attachment region, so that the exterior cover and the back LCD panel are in close contact with the attachment region. Thus, the waterproofness of the electronic component holder is secured.

  In addition to this, Patent Documents 2 to 4 disclose techniques for securing waterproofness and preventing water intrusion to a storage part of an electronic component using a waterproof tape or the like.

JP 2010-130582 A (published June 10, 2010) JP 2009-239670 A (released on October 15, 2009) JP 2009-224101 A (released on October 1, 2009) JP 2008-288151 A (released November 27, 2008)

  By the way, in the pressing process when combining the casings of the mobile terminal device, when pressure is applied to the casing, depending on the shape of the pasting area, unexpectedly strong pressure may be applied to a part of the waterproof tape. In some cases, pressure may be applied in an unintended direction.

  For this reason, depending on how the pressure is applied, the waterproof tape may be displaced, or a part of the waterproof tape may be raised, and the waterproof tape cannot be applied uniformly, resulting in deterioration of waterproof performance. was there.

  However, in the above prior arts, for example, the techniques described in Patent Documents 1 to 4, since there is no knowledge about such a problem, in such a case, deterioration of waterproof performance cannot be prevented.

  The present invention has been made in view of the above-mentioned problems, and its purpose is to mount the device by preventing the two cases from being separated or displaced when the two cases are bonded together with an adhesive. The object is to realize a terminal device casing capable of ensuring the hermeticity of the space and a terminal device including the casing.

  The terminal device housing according to the present invention is a terminal in which a device mounting space is formed by combining a first case and a second case via a sheet-like adhesive material in order to solve the above-described problem. In the apparatus housing, at least one of the installation regions of the adhesive material in the first case and the second case includes a recess arrangement region in which one or a plurality of recesses are provided. It is characterized by.

  Here, the terminal device casing is configured by combining the first case and the second case. A space for mounting a device for realizing the function of the terminal device is formed in the terminal device casing thus configured. When the first case and the second case are combined, a sheet-like adhesive material is inserted between the first case and the second case, that is, between the joint surfaces of the two cases.

  The adhesive material is inserted between the first case and the second case in order to bond the first case and the second case. The sheet-like pressure-sensitive adhesive material may have an adhesive surface on both surfaces of the base material or may not have a base material, and can be employed without any particular limitation. Further, the thickness of the sheet-like adhesive material is preferably applicable from an extremely thin thickness of about 10 μm to a thickness of about 3 mm.

  Moreover, various things can be employ | adopted as an adhesive material, for example, it is also possible to employ | adopt the member which has waterproofness. More specifically, for example, a waterproof double-sided adhesive tape in which an acrylic pressure-sensitive adhesive is applied to both surfaces of a flexible foam base material can be employed as the adhesive material.

  By the way, in the process of combining the first case and the second case, when pressure is applied to the first case and the second case for combination, pressure is applied to the adhesive material inserted between the two cases. , And stress against this pressure is generated.

  In the above configuration, one or a plurality of recesses are provided in the recess arrangement region provided in at least one of the installation regions of the adhesive material in the first case and the second case. Yes. In addition, there is no restriction | limiting in particular in the shape of a recessed part, For example, the shape like the groove | channel formed continuously over predetermined length may be sufficient.

  Since it has the recessed part arrangement | positioning area | region provided with the above recessed parts, when the pressure for combination is applied with respect to the 1st case and the 2nd case, a sheet-like adhesive material deform | transforms. Then, a part of it is retracted into the recess.

  Thereby, the stress which arises in an adhesive material can be disperse | distributed, As a result, the pressure concerning the said installation area | region can be closely approximated. For this reason, the first case and the second case can be prevented from separating due to the generated stress, and the adhesive material can be prevented from shifting to an unintended position.

  Furthermore, to prevent the first case and the second case from being separated from each other means that the stress in the peeling direction of the first case and the second case can be reduced.

  Further, when further examining the effect of preventing the adhesive material from shifting to an unintended position, for example, when the width of the installation area of the adhesive material is not uniform, when pressure is applied for combination, the area on which the pressure is applied varies, The stress generated in the adhesive material is not uniform. Even in such a case, it is possible to prevent the adhesive material from shifting to an unintended position due to the pressure dispersion effect.

  As described above, it is possible to prevent the separation of the case and the shift of the adhesive material in the combination process of the first case and the second case, and to secure the sealing property of the device mounting space.

  Moreover, in the terminal device housing according to the present invention, the installation area of each of the first case and the second case is a plane or a curved surface inclined with respect to the first surface included in the installation area. It is preferable that the second surface is formed continuously, and the recessed portion arrangement region is provided from the first surface to the second surface.

  Since the sheet-like adhesive material has a thickness, the second surface that is a flat surface or a curved surface that is inclined with respect to the first surface included in the installation region is continuously provided in the installation region without providing the concave portion. It is assumed that the wrinkles are more easily formed than when the sheet-like adhesive material is installed on a uniformly flat surface. In particular, it is assumed that wrinkles are more likely to occur in the portion where the sheet-like adhesive material connects the first surface and the second surface.

  However, in the present invention, by providing the concave portion from the first surface to the second surface, the above-described pressure dispersion effect can be obtained at a place where wrinkles are relatively easy. Thereby, it is possible to reduce the generation of wrinkles caused by the installation area not being a flat surface.

  Furthermore, as described above, the second surface which is a flat surface or a curved surface inclined with respect to the first surface included in the installation region by providing the concave portion from the first surface to the second surface. Even if it forms continuously, generation | occurrence | production of a wrinkle can be reduced. That is, if the concave portion is provided from the first surface to the second surface, it is not necessary to form the installation region uniformly and flatly, and there is an advantage that the degree of freedom of the housing shape is improved.

  Moreover, in the terminal device housing according to the present invention, it is preferable that the concave portion is provided at least in a portion where the first surface is changed to the second surface in the concave portion arrangement region.

  According to the above configuration, since the concave portion is provided in a portion where wrinkles are more likely to occur, that is, a portion that changes from the first surface to the second surface, the effect of preventing wrinkles is further enhanced.

  In the terminal device housing according to the present invention, it is preferable that the plurality of recesses are arranged in a band shape in the recess arrangement region.

  According to the above configuration, since the installation area can be secured wider than the case where the concave portion is configured in a groove shape continuously formed over a predetermined length, the above-described adhesive performance of the pressure-sensitive adhesive material is improved. The effect of dispersing the pressure can be obtained.

  Here, “arranged in a strip shape” does not necessarily have to be linearly arranged, and includes the state of being meandered with some width. The phrase “a plurality of recesses are arranged” means that the recesses are not formed in a groove shape continuously formed over a predetermined length, but adjacent recesses are spaced apart.

  According to the above configuration, it is possible to suppress the occurrence of wrinkles in the column width direction and the length direction of the concave portions arranged in a band shape, and to ensure the sealing property of the device mounting space.

  Moreover, in the terminal device housing according to the present invention, it is preferable that the recesses are arranged in a plurality of rows in the recess arrangement region.

  When only one row of recesses is arranged, if a wrinkle occurs at both ends of the recesses arranged in the recess arrangement region in the row width direction of the recesses arranged in the recess arrangement region, the path connecting the both ends of the recess arrangement region Is formed.

  On the other hand, according to the above configuration, when wrinkles are formed at both ends of one recess arranged in a row at the end of the recess arrangement region, there is a path that connects the recess and a recess in a row adjacent to the row. It is only formed. That is, in this case, a path connecting both ends of the recessed portion arrangement region is not formed.

  Furthermore, the stress that generates wrinkles at both ends of one recess arranged in a certain row is easily absorbed or alleviated by the recess in the row adjacent to the row.

  As a result, it is possible to prevent the influence of wrinkles generated at one end of the recessed portion arrangement region from spreading to the other end.

  Moreover, in the terminal device housing according to the present invention, in each of the plurality of rows, the plurality of the recesses are arranged in a strip shape in the recess arrangement region, and the recesses arranged in one row are adjacent to each other. It is preferable to be provided at a position shifted from the recesses arranged in other rows.

  In the periphery of the recess, a portion having a small distance from the end of the recess arrangement region or another recess tends to be wrinkled more easily. According to the said structure, the distance of a certain recessed part and the edge part and other recessed part of a recessed part arrangement | positioning area | region can be taken.

  Further, when the shape of the periphery of the recess is linear, wrinkles tend to be easier at the center. For example, when the shape around the recess is a rectangle, the wrinkles tend to be easier near the midpoint of each side. According to the above configuration, in the adjacent rows, the concave portions are arranged so that the central portions of the straight portions around the concave portions are not adjacent to each other.

  Therefore, according to the said structure, it can avoid that the part where wrinkles are easier to adjoin or approach too much, and there exists an effect that wrinkles become more difficult by this.

  Moreover, in the terminal device housing according to the present invention, it is preferable that the concave portion is formed with a raised portion around the concave portion.

  According to the said structure, the area where the circumference | surroundings of a recessed part and a sheet-like adhesive material contact can be made small. Thereby, when the pressure for crimping | bonding the 1st case and the 2nd case is applied, the pressure concerning the contact surface of the circumference | surroundings of a recessed part and a sheet-like adhesive material can be enlarged.

  As a result, the periphery of the recess and the sheet-like pressure-sensitive adhesive material are in close contact with each other, thereby producing an effect of improving the sealing performance.

  Moreover, in the terminal device housing according to the present invention, it is preferable that the sheet-like adhesive material is waterproof.

  According to the above configuration, since the adhesive material can be prevented from being displaced and the sealing property of the device mounting space can be secured, the waterproof effect by the sheet-like adhesive material can be improved.

  Note that a terminal device including the terminal device housing according to the present invention as a housing also falls within the scope of the present invention. Examples of the terminal device include mobile terminal devices such as mobile phones.

  In the terminal device housing according to the present invention, at least one of the installation regions of the adhesive material in the first case and the second case is a recess arrangement region in which one or a plurality of recesses are provided. It is the composition which includes.

  Therefore, the effect of preventing the separation of the first case and the second case and the shift of the adhesive material in the process of combining the first case and the second case and ensuring the sealing property of the device mounting space. Play. In the case where the sheet-like adhesive material has a waterproof effect, there is also an effect of improving the waterproof property of the sheet-like adhesive material.

It is sectional drawing which shows a cross-section when the 1st housing | casing which concerns on one Embodiment of this invention is seen from the left side surface. It is an external view which shows the state which the mobile telephone opened, (a) is a left view of a mobile telephone, (b) is a top view of a mobile telephone. It is an external view which shows the state which the portable telephone was folded and closed, (a) is a left view of a portable telephone, (b) is a top view of a portable telephone. It is a disassembled perspective view of the said 1st housing | casing with which the said mobile phone is provided. It is a disassembled perspective view of the said 1st housing | casing with which the said mobile phone is provided. It is a perspective view which shows the state after assembling the said 1st housing | casing. It is a figure shown about the external appearance of the inner case which comprises the said 1st housing | casing, (a)-(c) is the left view, the top view, and bottom view of the said inner case, respectively. It is a figure shown about the external appearance of the outer case which comprises the said 1st housing | casing, (a)-(c) is the left view, the top view, and bottom view of the said outer case, respectively. It is an enlarged view of the area | region W1 shown to (c) of FIG. It is the schematic which showed the one aspect | mode of the schematic structure of the area | region shown in FIG. It is the schematic which showed the one aspect | mode of the schematic structure of the area | region shown in FIG. It is the schematic which showed the one aspect | mode of the schematic structure of the area | region shown in FIG. It is the schematic which showed the one aspect | mode of the schematic structure of the area | region shown in FIG. It is the schematic which represented the area | region where the groove | channel is provided in the outer side case roughly. It is a schematic sectional drawing showing the cross section of the straight line H1-H1 shown in FIG. FIG. 15 is a schematic cross-sectional view showing a cross section taken along the line H2-H2 shown in FIG. It is a figure shown about the structural example which deform | transformed the structure of the groove | channel illustrated in the schematic sectional drawing of FIG. It is a figure shown about the structural example which deform | transformed the structure in the area | region shown in FIG. It is a schematic sectional drawing which shows roughly the arrow cross section of the straight line Z2-Z2 shown in FIG. It is the schematic which represented roughly the area | region in which the groove | channel concerning the said structural example is provided. It is a figure shown about the modification which deform | transformed the structure in the area | region shown in FIG. FIG. 22 is a schematic cross-sectional view schematically showing a cross section taken along line Z3-Z3 shown in FIG. It is a figure shown about the reference example at the time of not providing a groove | channel in any of an inner side case and an outer side case. It is a figure shown about the reference example at the time of not providing a groove | channel in any of an inner side case and an outer side case. It is a figure shown about the reference example at the time of not providing a groove | channel in any of an inner side case and an outer side case.

  One embodiment of the present invention is described below with reference to FIGS.

(About mobile phones)
First, a cellular phone (terminal device) 1 including a housing according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3. FIG. 2 is an external view showing a state where the mobile phone 1 is opened. FIG. 3 is an external view showing a state in which the mobile phone 1 is folded and closed.

  2 and FIG. 3A are left side views of the mobile phone 1, and FIG. 2 and FIG. 3B are plan views of the mobile phone 1.

  2 and 3B show a state where the mobile phone 1 is viewed from the direction of the arrow A1 shown in FIG. 2 and FIG. 2A and 3A show a state where the mobile phone 1 is viewed from the direction of the arrow A2 shown in FIGS. 2 and 3B.

  As shown in FIG. 2, the mobile phone 1 has a configuration in which a first housing (terminal device housing) 3 and a second housing 5 are connected to be able to be folded and opened with a hinge portion 6 as an axis. It is.

  The first housing 3 includes a display device 2 configured by an LCD module or the like. The second housing 5 includes an operation key 4 for receiving an operation on the mobile phone 1. The operation key 4 is provided with, for example, a cross key, a numeric key, an enter key, and various function keys.

  As shown in FIG. 3, the mobile phone 1 is configured such that the display device 2 and the operation keys 4 are hidden inside when the mobile phone 1 is folded and closed.

(About the first housing)
Next, details of the first casing 3 provided in the mobile phone 1 will be described with reference to FIGS. 4 and 5. 4 and 5 are exploded perspective views of the first housing 3.

  FIG. 4 shows a perspective view of the first housing 3 as viewed from the arrow A1 side shown in FIG. FIG. 5 is a perspective view of the first housing 3 as viewed from the arrow A3 side shown in FIG.

  4 and 5, only the outer case 20 and the inner case 10 constituting the first casing 3 are shown for convenience of explanation, and the configuration of the display device 2 provided in the first casing 3 is as follows. Omitted.

  Here, the inner case 10 is a box-shaped housing. Further, the outer case (first case, second case) 20 is a housing shaped to be a box-shaped lid of the inner case 10. The inner case 10 and the outer case 20 constitute the first housing 3 by being assembled.

  In addition, the inner case 10 is a portion that comes inward when the cellular phone 1 is folded and closed, and the outer case 20 is a portion that is exposed to the outside when it is in that state.

  As shown in FIG. 4, a waterproof tape affixing surface (installation area) 11 configured in a generally rectangular frame shape is provided at the peripheral edge of the inner case 10. In addition, as shown in FIG. 5, a waterproof tape attaching surface (installation region) 21 is provided in the peripheral portion of the outer case 20 in a region facing the waterproof tape attaching surface 11 provided in the inner case 10. It has been.

  The inner case 10 and the outer case 20 are assembled, for example, as follows in the assembly process of the first housing 3.

  That is, first, a double-sided adhesive waterproof tape (not shown) whose both surfaces are adhesive surfaces is installed on the waterproof tape attaching surface 11 of the inner case 10. Then, the inner case 10 and the outer case 20 are combined as shown in FIGS. 4 and 5, and the double-sided adhesive waterproof tape installed on the waterproof tape attaching surface 11 of the inner case 10 is attached to the waterproof tape of the outer case 20. Affixed to the attachment surface 21. Thereby, the internal space (board | substrate incorporation part 16) formed with the inner side case 10 and the outer side case 20 is sealed, and waterproofing is ensured.

  It should be noted that in the assembling process of the first housing 3, the display device 2 is incorporated in the display device incorporating portion 18 of the inner case 10 shown in FIG. A front panel (not shown) is pasted. In addition, a substrate or the like on which various electronic components including a drive circuit for driving the display device 2 are mounted is disposed in the substrate mounting portion (device mounting space) 16 of the inner case 10 shown in FIG. .

  FIG. 6 shows a state after the first casing 3 is assembled. FIG. 6 is a perspective view showing a case where the inner case 10 and the outer case 20 shown in the exploded perspective view of FIG. 4 are assembled.

(Inner case and outer case)
Next, the inner case 10 and the outer case 20 will be further described with reference to FIGS. 7 and 8.

  FIG. 7 is a diagram illustrating the appearance of the inner case 10, and FIGS. 7A to 7C are a left side view, a plan view, and a bottom view of the inner case 10, respectively. That is, (a) shows a state when the inner case 10 is viewed from the direction of the arrow A2 shown in (b) and (c). Moreover, (b) has shown a mode when the inner case 10 is seen from the direction of arrow A1 shown to (a). Moreover, (c) has shown the mode when the inner case 10 is seen from the direction of arrow A3 shown to (a).

  FIG. 8 is a diagram showing the outer appearance of the outer case 20, and (a) to (c) are a left side view, a plan view, and a bottom view of the outer case 20, respectively. That is, (a) shows a state when the outer case 20 is viewed from the direction of the arrow A2 shown in (b) and (c). Further, (b) shows a state when the outer case 20 is viewed from the direction of the arrow A1 shown in (a). Moreover, (c) has shown the mode when the outer case 20 is seen from the direction of arrow A3 shown to (a).

  As shown in FIG. 7B, the waterproof tape attaching surface 11 includes a flat surface 11a and a slope 11b. The flat surface 11a and the inclined surface 11b are connected by a connecting portion 15 (see FIG. 1) in an angle change region R11 included in the waterproof tape attaching surface 11.

  In other words, in the angle change region R11, the surface of the waterproof tape attaching surface 11 is inclined in the middle of the region. Note that this configuration is merely an example, and the present invention is not limited to this. For example, another plane or curved surface inclined with respect to the flat surface 11a may be continuously formed.

  In FIG. 7B, the two angle change regions R11 are in a line-symmetric positional relationship with respect to the straight line XX.

  As shown in FIG. 8C, the surface of the waterproof tape attaching surface 21 is composed of a flat surface (first surface) 21a and an inclined surface (second surface) 21b. The flat surface 21a and the inclined surface 21b are connected by a connecting portion 25 (see FIG. 1) in an angle change region (a portion that changes from the first surface to the second surface) R21 included in the waterproof tape attachment surface. .

  In other words, in the angle change region R21, the surface of the waterproof tape attaching surface 11 is inclined in the middle of the region.

  Further, in the outer case 20, grooves (concave portions, concave portion arranging regions) 22 are provided around the angle change region R 21 included in the waterproof tape attaching surface 21. A plurality of (for example, four) grooves 22 are provided from the flat surface 21a to the inclined surface 21b around each of the two angle change regions R21. The angle change region R21 and the groove 22 will be described in detail later.

  In FIG. 8C, the two angle change regions R21 and the grooves 22 provided in the periphery thereof are in a line-symmetric positional relationship with respect to the straight line YY.

(About the groove)
Next, the groove | channel 22 provided in the surface of the waterproof tape sticking surface 21 of the outer side case 20 is demonstrated using FIG. 9 and FIG.

  First, the configuration included in the region W1 shown in FIG. 8C will be described in more detail with reference to FIG. FIG. 9 is an enlarged view of a region W1 shown in FIG.

  As shown in FIG. 9, grooves 22a to 22d are provided in a strip shape from the flat surface 21a to the inclined surface 21b. Hereinafter, when it is not necessary to distinguish each of the grooves 22a to 22d, they are simply referred to as the grooves 22. 9 is merely an example, and the grooves 22a to 22d can be formed as one continuous groove.

  As shown in a region W1 in FIG. 9, the connecting portion 25 between the flat surface 21a and the inclined surface 21b is substantially horizontal on the paper surface of FIG. 9, whereas the waterproof tape attaching surface 21 is the right side surface of the outer case. The curve is gently curved from the left side of the paper surface of FIG. 9 to the center of the outer case (right side of the paper surface of FIG. 9).

  Since the grooves 22a to 22d are provided along the waterproof tape attaching surface 21, they are not parallel to the connecting portion 25 between the flat surface 21a and the inclined surface 21b. The positions where the grooves 22a to 22d are provided can be arbitrarily set in the vicinity of the angle change region R21. Of course, you may provide in parallel along the connection part 25 of the flat surface 21a and the slope 21b.

  The positions where the grooves 22a to 22d are provided will be described as follows. First, a part of the groove 22a is at a position included in the angle change region R21. Further, a part of the groove 22b and a part of the groove 22c are also in the position included in the angle change region R21, similarly to a part of the groove 22a.

  On the other hand, the groove 22d is provided on the inclined surface 21b at a position not included in the angle change region R21.

  Subsequently, with reference to FIG. 1, the cross-sectional structure when the first housing 3 is viewed from the left side (that is, the state seen from the direction of the arrow A2 shown in FIG. 6 or FIG. 8B) is described in more detail. explain. FIG. 1 is a cross-sectional view taken along the line Z1-Z1 shown in FIG.

  As shown in FIG. 1, the display device 2 is incorporated in the display device incorporation unit 18 of the inner case 10. A substrate 17 is incorporated in the substrate incorporation unit 16.

  In FIG. 1, the enlarged view of the area | region W3 which is a peripheral location of angle change area | region R11, 21 is shown.

  As shown in the region W3, the flat surface 11a and the inclined surface 11b are connected to each other at an angle slightly smaller than 180 degrees at the connection portion 15 of the angle change region R11. On the other hand, the flat surface 21a and the inclined surface 21b are connected at an angle slightly larger than 180 degrees at the connection portion 25 of the angle change region R21. The angles between the flat surfaces 11a and 21a and the inclined surfaces 11b and 21b shown here are merely examples, and the design can be arbitrarily changed.

  As described above, the first casing 3 is inclined so that the thickness of the first casing 3 increases from the arrow C1 side to the arrow C2 side. That is, the thickness of the first housing 3 is configured to increase from the arrow C1 side to the arrow C2 side in accordance with the thickness of the hinge portion 6 shown in FIG.

  Such a configuration is adopted because the main body of the first housing 3 is required to be thin from the viewpoint of design, while the hinge portion 6 is from the viewpoint of ensuring its function and strength. This is because there is a demand for securing the thickness. That is, based on such a requirement, the first housing 3 has a thickness in the vicinity of the joint portion with the hinge portion 6 in order to have the appearance integrity of the first housing 3 and the hinge portion 6. Is configured to be large.

(About the pasting press process)
Next, the configuration of the region W4 illustrated in FIG. 1 will be described in more detail with reference to FIGS. 10 to 13 are schematic diagrams illustrating a schematic configuration of the region W4 illustrated in FIG.

  FIG. 10 shows a case in which the dimensions of the inner case 10 and the outer case 20 are molded as desired with the desired accuracy and combined with no deviation.

  As shown in FIG. 10, a double-sided adhesive waterproof tape (adhesive material) 30 is inserted between the inner case 10 and the outer case 20.

  As already described, in the inner case 10, the flat surface 11a and the inclined surface 11b are connected with an angle. In the outer case 20, the flat surface 21a and the inclined surface 21b are connected with an angle.

  Further, in the outer case 20, a groove 22 is provided in a portion where the flat surface 21a and the inclined surface 21b are connected.

  In the assembly process of the first housing 3, for example, the inner case 10 is fixed and pressure is applied from the direction of the arrow P <b> 1 of the outer case 20, so that the inner case 10 and the outer case 20 have the double-sided adhesive waterproof tape 30. Glued through. Hereinafter, this process is referred to as a pasting press process.

  As described above, when the inner case 10 and the outer case 20 are combined in a state where there is no deviation, the thickness of the double-sided adhesive waterproof tape 30 becomes substantially uniform even after the attaching press step. That is, in this case, for example, the thickness E1 on the arrow C1 side and the thickness E2 on the arrow C2 side are both about 0.2 mm.

  By the way, in the molding process of the inner case 10 and the outer case 20, the dimensions of the inner case 10 and the outer case 20 obtained by the molding process vary to some extent for various reasons including the state of the molding process. That is, an error from a design dimension, that is, a tolerance occurs in either or both of the dimensions of the inner case 10 and the outer case 20. In the following description, when the term “tolerance” is used, it refers to a slightly larger error among allowable errors.

  Prior to the bonding press step, the inner case 10 and the outer case 20 are aligned. At this time, for example, after the positions of the inner case 10 and the outer case 20 are aligned on the arrow C1 side or aligned on the arrow C2 side, the attaching press process is performed.

  The inner case 10 and the outer case 20 are pressed while being shifted by the tolerance.

<< Reference Example >>
Here, before further explanation based on FIGS. 11 to 13, a reference example in which the groove 22 is not provided in any of the inner case 10 and the outer case 20 using FIGS. 23, 24, and 25. Will be described.

  First, FIG. 23 illustrates a state where the inner case 100 and the outer case 200 provided with an inclination are bonded together by the double-sided adhesive waterproof tape 300. Here, as shown in FIG. 10, the inner case 100 and the outer case 200 shown in FIG. 23 are molded according to a substantially designed dimension with a desired accuracy, and are combined in a state where there is almost no deviation. Therefore, the thickness of the double-sided adhesive waterproof tape 300 is substantially uniform even after the sticking press process.

  Next, FIG. 24 illustrates a case where the dimensions of the inner case 100 and the outer case 200 obtained by the molding process vary.

  The example shown in FIG. 24 shows a state before the sticking press process. In the example shown in FIG. 24, the inner case 100 and the outer case 200 are aligned on the arrow C200 side. By aligning in this way, the outer case 200 is displaced in the direction of the arrow C200 by the amount of tolerance, and thus a gap is generated between the outer case 200 and the double-sided adhesive waterproofing tape 300. Here, the distance between the outer case 200 and the double-sided adhesive waterproofing tape 300 before the attaching press process is represented by E100.

  In the state shown in FIG. 24, when performing the sticking press process, the inner case 100 is fixed and pressure is applied to the outer case 200 from the direction of the arrow P100.

  Next, FIG. 25 illustrates the state of the inner case 100 and the outer case 200 after the sticking press process.

  When pressure is applied to the outer case 200 from the direction of the arrow P100 shown in FIG. 25, stress is applied to the applied pressure in the double-sided adhesive waterproofing tape 300. In particular, the slope 210b of the outer case 200 is subjected to a stress greater than the stress in the direction of the arrow 200 applied to the flat surface 210a in the direction of the arrow F100 from the double-sided adhesive waterproof tape 300.

  Further, when the stress in the direction of the arrow F100 is decomposed into a component in the direction of the arrow F100x and a component in the direction of the arrow F100y, it is as follows.

  First, the stress in the direction of the arrow F100y functions to generate wrinkles in the connection portion 250.

  The stress in the direction indicated by the arrow F100x works to push the slope 210b back in the direction away from the inner case 100. As a result, the distance E101 between the inner case outer side 100 and the case 200 may be, for example, about 0.25 to 0.3 mm after the attaching press step.

  As described above, when performing the bonding press process, a difference occurs in the thickness when pressure-bonding between the portion in contact with the flat surface 210a of the double-sided adhesive waterproof tape 300 and the portion in contact with the inclined surface 210b. There is a difference in stress between locations, that is, stress is not applied uniformly at each location.

  Since stress is not applied uniformly at each location, wrinkles occur at the connecting portion 250 of the double-sided adhesive waterproof tape 300.

  Further, the action of pushing the inclined surface 210b back in the direction away from the inner case 100 may weaken the bonding between the inner case 100 and the outer case 200, or may cause a gap.

  Furthermore, generally speaking, double-sided adhesive waterproofing tape has a characteristic that when it is applied to a surface provided with a slope, its adhesive performance is lower than when it is applied to a flat surface. .

  Specifically, in the case of the sloped inner case 100 and outer case 200 as shown in FIGS. 23 to 25, a double-sided adhesive waterproof tape is applied to an area where a part is flat and a part is inclined. Therefore, at the joint between the flat portion and the inclined portion, the sticking becomes weak and there is a tendency to be greatly affected by the stress described above. Thus, if the waterproof tape cannot be applied uniformly, the waterproof performance may be deteriorated.

  Then, it returns to FIGS. 11-13, and continues description. FIG. 11 is a schematic diagram illustrating a state where there are variations in the dimensions of the inner case 10 and the outer case 20 obtained by the molding process. FIG. 12 is a schematic view showing a state at the moment when pressure is applied to the outer case 20 from the direction of the arrow P1 in the sticking press process. FIG. 13 is a schematic diagram showing a state of the inner case 10 and the outer case 20 after the sticking press process.

  The example shown in FIG. 11 shows a state before the sticking press process. In the example shown in FIG. 11, the inner case 10 and the outer case are aligned on the arrow C2 side. As a result, as described above, there is a gap between the outer case 20 and the double-sided adhesive waterproof tape 30 due to tolerances. Here, the size of this gap is represented by E11.

  In the state shown in FIG. 11, when performing the attaching press step, the inner case 10 is fixed and pressure is applied to the outer case 20 from the direction of the arrow P1.

  Then, as shown in FIG. 12, the double-sided adhesive waterproof tape 30 is deformed at the moment when pressure is applied to the outer case 20 from the direction of the arrow P1 in the sticking press step.

  Here, in the double-sided adhesive waterproof tape 30, a stress against the applied pressure is generated. At a position facing the slope 21b of the outer case 20, the stress is applied in the direction of the arrow F1 and works to push the slope 21b of the outer case 20 back.

  Further, at the position facing the flat surface 21a of the outer case 20, pressure is applied in the direction of the arrow P1, so that stress is generated in the direction of the arrow F3.

  Here, it is as follows when the stress with respect to the direction of arrow F1 is decomposed | disassembled into an arrow F1x direction component and an arrow F1y direction component, and is considered in detail.

  Similar to the example shown in FIG. 25, the stress in the direction of the arrow F1y acts in the direction toward the connecting portion between the flat surface 21a and the inclined surface 21b. The stress in the arrow F1x direction component acts in a direction to push the slope 21b back in the direction away from the inner case 10.

  In addition, in FIG. 12, what is represented by a dotted line is the shape of the double-sided adhesive waterproofing tape 30 before applying pressure.

  Subsequently, as shown in FIG. 13, the stress in the direction of the arrow F1y shown in FIG. 12 deforms part of the double-sided adhesive waterproof tape 30 in the vicinity of the connecting portion between the flat surface 21a and the inclined surface 21b. It works to evacuate to 22. That is, a part of the deformed double-sided adhesive waterproof tape 30 is received in the groove 22 to form the bump G1.

  Thereby, a part of the stress in the direction of the arrow F1, that is, the stress that pushes back the outer case 20 can be dispersed. Therefore, the outer case 20 can be prevented from floating from the double-sided adhesive waterproof tape 30.

  As a result, for example, the thickness E12 on the arrow C1 side is about 0.2 mm, and the thickness E22 on the arrow C2 side is about 0.1 mm.

  Moreover, since the stress which pushes back the outer case 20 can be dispersed in this way, it is possible to further increase the pressure in the sticking press process. If the pressure is increased, the inner case 10 and the outer case 20 can be strongly adhered to the double-sided adhesive waterproof tape 30 accordingly.

  Therefore, as described above, it is possible to reduce the decrease in the adhesive performance when the double-sided adhesive waterproof tape is attached to the slope.

(Waterproof performance)
Next, the waterproof performance near the region where the groove 22 is provided will be described with reference to FIGS. FIG. 14 is a schematic view schematically showing a region where the grooves 22 a to 22 d are provided in the outer case 20. 15 is a cross-sectional view taken along line H1-H1 across the groove 22c shown in FIG. FIG. 16 is a cross-sectional view taken along line H2-H2 across the groove 22d shown in FIG.

  More specifically, the example shown in FIG. 14 schematically shows the vicinity of the grooves 22a to 22d in the waterproof tape attaching surface 21 shown in the region W1 of FIG. FIG. 14 shows a state in which the double-sided adhesive waterproof tape 30 is installed on the waterproof tape attaching surface 21. In FIG. 14, the positions of the grooves 22a to 22d are indicated by dotted lines.

  In the first housing 3 after assembly, the inner case 10 is actually in a state of being overlapped and adhered to the double-sided adhesive waterproof tape 30, but in FIG. The notation of 10 is omitted. Further, in FIG. 14, the inclination of the flat surface 21a and the inclined surface 21b is omitted.

  Hereinafter, a case where wrinkles occur in the double-sided adhesive waterproof tape 30 in the vicinity of the grooves 22a to 22d will be described with reference to FIG.

  First, as shown in FIG. 14, a case where a wrinkle K1 that can be a moisture path occurs between the groove 22b and the groove 22c will be described. In this case, in the double-sided adhesive waterproof tape 30, adhesion is ensured along the line connecting the points Q1-Q2-Q3-Q4-Q1.

  Therefore, since there is no path connecting the arrow C2 side and the arrow C1 side of the waterproof tape attaching surface 21, it is possible to prevent water from entering from the arrow C2 side to the arrow C1 side or vice versa.

  That is, by forming at least one groove 22, even if a wrinkle is generated somewhere on the contact surface around the groove 22, the close contact between the groove 22 and the portion facing the groove 22 Since it is easy to ensure, generation | occurrence | production of the wrinkle extended long can be suppressed. This is because, as described above, the groove 22 functions as a stress absorbing portion that generates wrinkles.

  Further, referring to FIG. 15, the cross section of the straight line H1-H1 will be described as follows. As shown in FIG. 15, the double-sided adhesive waterproof tape 30 is in close contact with the waterproof tape attaching surface 21 on both the arrow C1 side and the arrow C2 side. Thereby, the waterproof property from the arrow C1 side to the arrow C2 side is ensured in the vicinity of the groove 22b.

  Subsequently, as shown in FIG. 14, a case where wrinkles K2 are generated on the arrow C2 side of the groove 22c will be described. In this case, since there is a wrinkle K2, there is a case where water enters the groove 22c from the arrow C2 side.

  Here, with reference to FIG. 16, it will be as follows when the cross section of the straight line H2-H2 is demonstrated. As shown in FIG. 16, the double-sided adhesive waterproof tape 30 is lifted from the waterproof tape attaching surface 21 because there is a wrinkle K <b> 2 on the arrow C <b> 2 side. On the other hand, the double-sided adhesive waterproof tape 30 is in close contact with the waterproof tape attaching surface 21 on the arrow C1 side. For this reason, the wrinkle K2 does not reach the arrow C1 side.

  Referring to FIG. 14 again, in the double-sided adhesive waterproof tape 30, adhesion is ensured along a line connecting points Q1-Q2-Q3-Q4. Further, as described above, the groove 22 acts as a stress absorbing portion that generates wrinkles.

  Therefore, even in this case, since there is no path connecting the arrow C2 side and the arrow C1 side of the waterproof tape attaching surface 21, water can be prevented from entering from the arrow C2 side to the arrow C1 side or vice versa. Can do.

  In this case, from another viewpoint, it can be said that the presence of the groove 22c has an effect of preventing the wrinkle K2 from spreading to the arrow C1 side.

  Moreover, according to the said structure, since an adhesive surface can also be ensured between each groove | channel 22a-22d, there also exists a merit that adhesive force can also be ensured, ensuring waterproofness.

(Action / Effect)
As described above, the first housing 3 according to the present embodiment includes the board built-in portion by combining the inner case 10 and the outer case 20 via the double-sided adhesive waterproof tape 30 via the sheet-like adhesive material. In the case of the cellular phone 1 in which 16 is formed, a region provided with four grooves 22a to 22d is provided on the waterproof tape attaching surface 21 of the outer case 20 by way of example.

  While preventing the separation of the inner case 10 and the outer case 20 and the shift of the double-sided adhesive waterproof tape 30 in the process of combining the inner case 10 and the outer case 20, etc., while ensuring the hermeticity of the board built-in portion 16, the double-sided adhesive waterproof tape 30 has the effect of improving waterproofness.

[Modification]
Hereinafter, a preferred modification of the first housing 3 will be described with reference to FIGS. 17 to 22.

(About the shape around the groove)
A modification of the shape around the groove 22 will be described with reference to FIG. FIG. 17 is a diagram illustrating a configuration example in which the structure of the groove 22 illustrated in the cross-sectional view of FIG. 15 is modified.

  As shown in FIG. 17, the periphery of the groove 22 may be raised. As shown in FIG. 17, raised portions 25a and 25b may be formed on both sides of the groove 22 on the arrow C1 side and the arrow C2 side.

  The raised portions 25 a and 25 b include contact portions 24 a and 24 b that come into contact with the double-sided adhesive waterproof tape 30, and outer walls 23 a and 23 b that are provided from the contact portions 24 a and 24 b to the waterproof tape attaching surface 21.

  If it says from another viewpoint, the groove | channel 22 is formed in the waterproof tape affixing surface 21 by providing the protruding parts 25a and 25b.

  According to the above configuration, when pressure in the direction of the arrow P1 is applied in the sticking press process or the like, pressure is applied to the double-sided adhesive waterproof tape 30 in the direction of the arrow P10 at the contact portions 24a and 24b.

  Here, the area in contact with the double-sided adhesive waterproof tape 30 is smaller in the configuration shown in FIG. 17 than in the configuration illustrated in FIG. 15. Therefore, in the contact parts 24a and 24b, a larger pressure is applied to the double-sided adhesive waterproof tape 30 than in the configuration illustrated in FIG.

  Thereby, the adhesiveness of the double-sided adhesive waterproof tape 30 and the raised portions 25a and 25b is enhanced, and the waterproof performance can be improved.

  In addition, for example, in a configuration in which a drag force acting in the direction of the arrow P10 from the raised portions 25a and 25b is continuously urged against the double-sided adhesive waterproof tape 30, adhesion and waterproof properties are further improved.

(Configuration in which grooves arranged in a plurality of rows are provided)
A modification in which the grooves 22 are arranged in a plurality of rows will be described with reference to FIGS. FIG. 18 is a diagram showing a configuration example in which the configuration in the region W1 shown in FIG. 9 is modified. 19 is a schematic cross-sectional view schematically showing a cross-section taken along line Z2-Z2 shown in FIG. FIG. 20 is a schematic diagram schematically illustrating a region where the grooves 22a to 22g are provided.

  As shown in FIG. 18, the grooves 22 may be arranged in two rows. As shown in the figure, in addition to the arrangement of the grooves 22a to 22d described so far, grooves 22e to 22g are further arranged in the vicinity of the angle change region R21. Hereinafter, when distinguishing the arrangement of the grooves 22a to 22d from the arrangement of the grooves 22e to 22g, the grooves 22a to 22d are referred to as "groove 22", and the grooves 22e to 22g are referred to as "groove 22 '". Refer to it. When it is not necessary to distinguish between the arrangement of the grooves 22a to 22d and the arrangement of the grooves 22e to 22g, the grooves 22a to 22g are referred to as “groove 22”.

  In the configuration example shown in FIG. 18, the grooves 22e to 22g are not provided in alignment with the grooves 22a to 22d, but are provided at slightly shifted positions.

  For example, in the case of the groove 22 ′, the intermediate portion 23 (a portion where no groove is formed) between the adjacent grooves 22f and 22g and the groove 22c are adjacent to each other. That is, the intermediate portion 23 and the groove 22c are adjacent to each other in a direction orthogonal to the arrangement direction of the grooves 22 or the arrangement direction of the grooves 22 ′.

  Further, the configuration example shown in FIG. 18 can also be expressed as follows. In a plurality of grooves 22 ′ arranged in a certain direction, an intermediate portion between adjacent grooves 22 ′ and one groove 22 (for example, groove 22 c) of the plurality of grooves 22 arranged in parallel with the plurality of grooves 22 ′ are adjacent to each other. is doing. That is, the intermediate portion 23 and the groove 22c are adjacent to each other in a direction orthogonal to the arrangement direction of the grooves 22 or the arrangement direction of the grooves 22 ′.

  However, the present invention is not limited to this, and the grooves 22e to 22g and the grooves 22a to 22d may be provided so that the intermediate portions thereof are adjacent to each other.

  Moreover, the arrangement of the grooves can be further divided into 3, 4, and a plurality of rows.

  Here, with reference to FIG. 19, a cross section taken along the line Z2-Z2 shown in FIG. 18 will be described. The structure shown in FIG. 19 has a structure in which a groove 22f is further added to the slope 21b in the cross-sectional structure shown in FIG.

  Then, the waterproof performance of the said structure is demonstrated using FIG. More specifically, FIG. 20 schematically shows the vicinity of the grooves 22a to 22d in the waterproof tape attaching surface 21 shown in FIG. The notation method in FIG. 20 is based on that in FIG. For example, in FIG. 20, the positions of the grooves 22a to 22g are indicated by dotted lines. Others are the same.

  When the wrinkle K21 occurs between the groove 22e and the groove 22f, for example, the arrow C2 side and the arrow C1 side are separated by the line connecting the points Q11-Q12-Q13-Q17-Q18, so the arrow C2 It is possible to prevent water from entering from the side to the arrow C1 side or vice versa. The same applies to the case where wrinkles K22 are generated on the arrow C2 side in the groove 22f.

  Here, the case where the wrinkle K23 is generated between the groove 22c and the groove 22f will be described as follows.

  As shown in FIG. 20, in the double-sided adhesive waterproof tape 30, for example, the arrow C2 side and the arrow C1 side are separated by a line connecting points Q11-Q12-Q13-Q14-Q15-Q16-Q17-Q18. .

  Therefore, even in this case, since there is no path connecting the arrow C2 side and the arrow C1 side of the waterproof tape attaching surface 21, water can be prevented from entering from the arrow C2 side to the arrow C1 side or vice versa. Can do.

  Thus, in the modification shown in FIGS. 18-20, even if wrinkles occur on both sides of the arrow C1 side and the arrow C2 side of the groove 22, the arrow C2 side and the arrow C1 side of the waterproof tape attaching surface 21 are connected. The route is not possible. Therefore, the modification shown in FIGS. 18 to 20 has higher waterproof performance than the example of FIG.

  That is, with reference to FIG. 20, in the groove 22f, wrinkles K22 and K23 are generated on both sides of the arrow C1 side and the arrow C2 side, but the wrinkle K23 is formed on the arrow C1 side due to the groove 22c. It has not reached.

  Thus, the waterproof performance can be further improved by arranging the grooves 22 in a plurality of rows.

  More specifically, the grooves 22e to 22g are not provided so as to be aligned with the grooves 22a to 22d, but are provided at slightly shifted positions. This configuration is suitable for improving waterproofness. The reason will be described below.

  First, in FIG. 20, the groove 22 is indicated by a rectangle having a long side in the horizontal direction and a short side in the vertical direction on the paper. Here, in the periphery of the groove 22, the vicinity of the middle of the long side and the short side of the groove 22 can be said to be a place where wrinkles are likely to occur. More specifically, it is as follows.

  That is, the wrinkles K <b> 21 and K <b> 22 shown in FIG. 20 occur around the middle of the long side of the groove 22 around the groove 22. Therefore, it can be said that the wrinkles K21 and K22 are generated at places where wrinkles are relatively likely to occur around the groove 22.

  On the other hand, the wrinkle K23 shown in FIG. 20 is generated at a position away from the vicinity of the middle of the long side of the groove 22 in the periphery of the groove 22. Therefore, it can be said that the wrinkle K23 is generated in the groove 22 where the wrinkle is relatively difficult to occur.

  According to the above configuration, in the vicinity of the middle of the long side (for example, the position of the points Q13, Q16, etc.) around the groove 22, the area between the grooves in the other row, that is, the waterproofing is provided. A region where the tape attaching surface 21 and the double-sided adhesive waterproof tape 30 are in close contact with each other is adjacent.

  Thereby, the area | region where the waterproofing tape sticking surface 21 and the double-sided adhesive waterproofing tape 30 contact | adhered to the location which wrinkles generate | occur | produces comparatively adjoins, and can reinforce the location which wrinkles generate | occur | produces comparatively easily. it can. For this reason, there exists an effect that waterproofness can be improved.

(Regarding the configuration in which a groove is provided in the inner case)
The case where a groove is provided in the inner case (first case, second case) 10 will be described with reference to FIGS. FIG. 21 is a diagram showing a modified example in which the structure in the region W2 shown in FIG. 6 is modified. 22 is a schematic cross-sectional view schematically showing a cross-section taken along line Z3-Z3 shown in FIG.

  As shown in FIG. 21, from the flat surface (first surface) 11a in the vicinity of the angle change region (the portion that changes from the first surface to the second surface) R11 of the waterproof tape attachment surface (installation region) 11 Grooves (concave portions, concave portion arrangement regions) 12a to 12d are provided over the inclined surface (second surface) 11b.

  The arrow cross section along the straight line Z3-Z3 having this configuration will be described with reference to FIG. As shown in FIG. 22, the groove 12 is provided in the angle change region R <b> 11 of the inner case 10.

  In the example illustrated in FIG. 22, the outer case 20 is configured not to have a groove, but is not limited to this configuration. A groove may be provided in both the inner case 10 and the outer case 20. Further, in both the inner case 10 and the outer case 20, a plurality of rows of grooves may be arranged. Further, the grooves 12a to 12d can be formed as one continuous groove.

  Moreover, it is good also as a structure which provides a groove | channel in the whole region of the waterproof tape affixing surface 11 * 21 in either one of the inner side case 10 and the outer side case 20, or both.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  According to the 1st housing | casing which concerns on this invention, the sealing performance of a housing | casing can be improved. The present invention can be preferably applied not only to mobile terminal devices such as mobile phones, but also to terminal devices that are used stationary.

1 Mobile phone (terminal equipment)
3 First housing (terminal device housing)
5 Second housing 10 Inner case (first case, second case)
11 Waterproof tape attachment surface (installation area)
11a Flat surface (first surface)
11b Slope (second surface)
12 (ad) Groove (concave part, concave part arrangement area)
16 Board mounting part (equipment mounting space)
R11 Angle change region (a portion changing from the first surface to the second surface)
20 Outer case (first case, second case)
21 Waterproof tape affixing surface (installation area)
21a Flat surface (first surface)
21b Slope (second surface)
22 (ad, ef) Groove (recessed portion, recessed portion arrangement region)
30 Double-sided adhesive waterproofing tape (adhesive)
R21 Angle change region (portion changing from the first surface to the second surface)

Claims (9)

In the terminal device housing in which the device mounting space is formed by combining the first case and the second case via a sheet-like adhesive material,
Of the adhesive material installation areas in the first case and the second case, at least one of the installation areas includes a recess arrangement area in which one or a plurality of recesses are provided. Device housing. In each of the installation regions of the first case and the second case, a second surface that is a flat surface or a curved surface that is inclined with respect to the first surface included in the installation region is continuously formed. ,
The terminal device casing according to claim 1, wherein the recessed portion arrangement region is provided from the first surface to the second surface.   The terminal device housing according to claim 2, wherein the recess is provided at least in a portion that changes from the first surface to the second surface in the recess arrangement region.   4. The terminal device casing according to claim 1, wherein the plurality of recesses are arranged in a band shape in the recess arrangement region. 5.   4. The terminal device housing according to claim 1, wherein the recesses are arranged in a plurality of rows in the recess arrangement region. 5.   In each of the plurality of columns, the plurality of recesses are arranged in a strip shape in the recess arrangement region, and the recesses arranged in one row are in contrast to the recesses arranged in another adjacent row. The terminal device casing according to claim 5, wherein the terminal device casing is provided at a shifted position.   The terminal device casing according to claim 1, wherein the concave portion is formed with a raised portion around the concave portion.   The terminal device casing according to claim 1, wherein the sheet-like adhesive material has waterproofness.   A terminal device comprising the terminal device housing according to claim 1 as a housing.

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