JP2014222732A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a cap member that seals a window by sharing a lock function and a water cut-off function.SOLUTION: An electronic apparatus (a portable terminal device 2) includes a cap member (a protective cap 6) attachable to and detachable from a window (10) of a housing (4). A lock part (20) that locks the cap member (the protective cap 6) to the window (10) shares a water cut-off part that cuts off water at the window (10). At least the lock part (20) of the cap member (the protective cap 6) is formed of a water cut-off material and includes an adhesion part (40) that adheres to the window (10).

Description

The technology of the present disclosure relates to an electronic device such as a mobile terminal device.

  In an electronic device such as a portable terminal device, a housing is provided with a connector for connecting to an external device such as a headset. A cap member is attached to the window portion of the housing in which the connector is disposed so as to be openable and closable. This cap member has a water stop function and a lock function.

With regard to such a cap member, it is known that a cap member having flexibility is detachably provided in a casing of an electronic device (Patent Document 1). Moreover, regarding a water stop function, it is known to include an elastic member and a water stop member (Patent Document 2).

JP-A-7-235881 Japanese Utility Model Publication No. 6-70292

  By the way, in the structure in which the window part formed in the housing | casing of an electronic device can be opened and closed with a cap member, it is indispensable to provide the cap member with the fixing function and water stop function with respect to a window part. An elastic material is used for the cap member, and the steps for creating the water stop structure and the fixing structure are divided, and each is made of a different material. For example, a hard material is used for the external shape portion of the cap member, and a necessary member is made of a two-color molded product by combining this hard material with an elastic material. In this two-color molded product, the water stop structure is additionally molded with an elastic material or a part is added. As an example, the holding structure uses an elastomer to ensure pull-out strength and insertability, and the water-stopping structure uses silicon to achieve crushing performance. Uses the materials provided.

  In this way, cap members made of different materials have different production processes in each part, and each member is molded or attached differently in each production process, so there are many components and they are complicated, resulting in high costs and dimensional accuracy of the parts. Has its limits.

  Even if the water stop function is maintained, if the lock function is low due to dimensional accuracy, etc., the cap member that separates the water stop function and the lock function will cause the cap member to float from the housing, The water stop function of the housing is impaired. Even if the lock function is maintained, the reliability of the electronic device is impaired if the water stop function is degraded due to deterioration over time.

  Such a cap member complicates the structure on the electronic device side where the cap member is attached and detached, and also increases the installation space for the cap member, which hinders downsizing and thinning of the electronic device.

  Then, the objective of the technique of this indication is to share a lock function and a water stop function in view of the said subject.

Another object of the technology of the present disclosure is to simplify the cap member.

In order to achieve the above object, according to one aspect of the technology of the present disclosure, an electronic device includes a cap member that can be attached to and detached from a window portion of a housing. The lock part which locks this cap member to the said window part is made to share the water stop part which stops the said window part.

  According to the technique of the present disclosure, the following effects can be obtained.

  (1) The lock part provided in the cap member that opens and closes the window part of the housing provides both the lock function and the water stop function, and the installation space for the cap member can be reduced.

  (2) The number of parts constituting the cap member can be reduced, and the cap member can be simplified.

Other objects, features, and advantages of the present invention will become clearer with reference to the accompanying drawings and each embodiment.

It is a perspective view which shows the open state of the portable terminal device and protective cap which concern on 1st Embodiment. It is sectional drawing which shows the II-II line cross section of A of FIG. It is a figure which shows the window part of a portable terminal device. It is sectional drawing which shows the IV-IV sectional view of FIG. It is a perspective view which shows a protective cap seeing from an inner surface side. It is sectional drawing which shows the VI-VI line cross section of FIG. It is a figure which shows the dimension form of the standing wall part of a window part, and a protective cap. It is a figure which shows attachment / detachment with respect to the window part of a protective cap. It is a figure which shows the expanded cross section of the IX part of FIG. It is a figure which shows the formation method of a protective cap. It is a figure which shows the other formation method of a protective cap. It is a figure which shows the other formation method of a protective cap. It is a figure which shows the other formation method of a protective cap. It is a figure which shows the other formation method of a protective cap. It is a figure which shows the other formation method of a protective cap. It is a figure which shows the shape and contact | adherence structure of a contact part. It is a figure which shows the modification of the shape of an adhesion part, and an adhesion structure. It is a figure which shows the modification of the shape of an adhesion part, and an adhesion structure. It is a figure which shows the attachment or detachment structure of the protective cap which concerns on 2nd Embodiment. It is a figure which shows the attachment or detachment structure of the protective cap which concerns on other embodiment.

[First Embodiment]

  FIG. 1A shows a mobile terminal device according to the first embodiment. The mobile terminal device 2 is an example of the electronic device of the present disclosure. The portable terminal device 2 is provided with a protective cap 6 detachably on the side surface of the housing 4. The protective cap 6 is an example of a cap member of the present disclosure. A display unit 8 and a touch panel are installed on the upper surface side of the housing 4. Instead of the display unit 8, the movable cover may be attached by a hinge so as to be openable and closable, or the movable cover may be a movable side housing including the display unit.

  FIG. 1B shows an open state of the protective cap 6. A window 10 is formed in the housing 4, and the window 10 can be opened and closed by attaching and detaching the protective cap 6. A connector 12 connected to an external device is disposed in the window portion 10.

  The protective cap 6 is provided with an arm portion 14. The arm portion 14 has elasticity and is detachably connected to the housing 4 through the window portion 10. If a force exceeding the connection strength of the arm portion 14 to the housing 4 is applied to the protective cap 6, the arm portion 14 is detached from the housing 4, and the protective cap 6 can be separated from the housing 4.

  Then, if the arm portion 14 is pushed into the housing 4 from the window portion 10 and the protective cap 6 is attached to the window portion 10, water can be prevented from entering the housing 4 from the window portion 10. Can be maintained in a water-stopping state.

  FIG. 2 shows a cross section taken along line II-II in FIG. A connector 12 is installed in the housing 4. The connector 12 is arranged with the connection side with the plug on the external device side facing the side surface of the housing 4. A standing wall 16 surrounding the connector 12 is formed on the side surface of the housing 4. The standing wall portion 16 constitutes a window frame of the window portion 10. The standing wall portion 16 is formed of, for example, a hard synthetic resin. The standing wall portion 16 may be formed integrally with the housing 4 or may be a molded body separate from the housing 4 and fixed to the housing 4 by adhesion or the like.

  The main body portion 18 of the protective cap 6 that opens and closes the window portion 10 is provided with a lock portion 20 that is detachably fitted to the standing wall portion 16. The lock portion 20 is fitted with the standing wall portion 16 of the window portion 10, locks the protective cap 6 to the window portion 10, and stops the window portion 10 with water. That is, the lock part 20 shares the water stop part of the window part 10. Thereby, the lock function of the protective cap 6 with respect to the window part 10 and the water stop function of the window part 10 are obtained by the lock part 20 without using a separate structure for the water stop part. Thus, the lock part 20 which shares a water stop part should just be formed with the water stop material provided with elasticity, such as an elastomer, for example.

  The arm portion 14 provided in the main body portion 18 is inserted into the insertion portion 22 of the housing 4 and is detachably attached to the housing 4. Thereby, the protective cap 6 is detachably connected to the housing 4.

  FIG. 3 shows the window 10 of the housing 4. FIG. 4 shows a cross section taken along line IV-IV in FIG. The window portion 10 is formed by a standing wall portion 16 that circulates around the connection port portion of the connector 12. In this embodiment, the window portion 10 has a rectangular shape with curved corner portions. An insertion portion 22 is formed adjacent to the window portion 10. When the arm portion 14 is inserted into the insertion portion 22 and the protective cap 6 is attached to the window portion 10, the window portion 10 is covered with the main body portion 18 of the protective cap 6.

  As shown in FIG. 4, the standing wall portion 16 is formed so as to protrude from the side surface of the housing 4. The protruding length of the standing wall portion 16 is a clearance that includes the thickness of the protective cap 6. Therefore, the protruding length of the standing wall portion 16 from the housing 4 may be a size corresponding to the thickness of the protective cap 6.

  A contact surface portion 24 of the protective cap 6 is provided on the top of the standing wall portion 16. The contact surface portion 24 is a flat surface portion that comes into contact with and comes into contact with the main body portion 18 of the protective cap 6.

  An inner wall surface 28 that is expanded from the opening wall surface 26 is formed inside the window portion 10, and an inclined wall surface 30 is formed between the inner wall surface 28 and the opening wall surface 26. The inclined wall surface 30 is an example of a close contact surface that is in close contact with the lock portion 20 of the protective cap 6, and is an example of a restraining member that restrains the lock portion 20. The inclined wall surface 30 is an inclined surface inclined toward the inner wall surface 28 that is wider than the opening width of the opening wall surface 26. That is, the inclined wall surface 30 of the standing wall 16 together with the lock 20 forms a lock structure and a water stop structure of the protective cap 6.

  Further, the insertion portion 22 is formed adjacent to the window portion 10. A retaining portion 32 that prevents the arm portion 14 from coming off is formed inside the insertion portion 22. The arm portion 14 of the protective cap 6 is detachably locked to the retaining portion 32.

  FIG. 5 shows the protective cap 6 from the inner surface side. FIG. 6 shows a cross section taken along line VI-VI in FIG. The protective cap 6 includes a body portion 18 having a width and a length that covers the window portion 10. The main body portion 18 is provided with a peripheral wall portion 34 that protrudes toward the housing 4 side. The surrounding portion of the peripheral wall portion 34 is provided with a lock portion 20 that is inserted into the window portion 10 and fitted to the standing wall portion 16. Therefore, the lock part 20 is a circular shape similarly to the standing wall part 16, for example.

  As shown in FIG. 6, the lock portion 20 includes a support portion 36 and a bent portion 38. The support portion 36 rises, for example, in the orthogonal direction from the back surface of the main body portion 18 of the protective cap 6, and is inserted into the opening wall surface 26 of the window portion 10 to support the bent portion 38. The bent portion 38 is expanded from the support portion 36 by being bent in the outer peripheral direction, and includes a close contact portion 40 that is in close contact with the inclined wall surface 30. In this embodiment, the contact portion 40 mainly performs a water stop function. The bent portion 38 formed of an elastic material having water-stopping properties such as an elastomer has a shape maintaining property and can be bent by elasticity.

  When the lock portion 20 is fitted to the standing wall portion 16 of the window portion 10, the contact portion 40 of the bent portion 38 is in close contact with the inclined wall surface 30. Thereby, the lock function by the elastic deformation of the bending part 38 and the water stop function of the window part 10 are obtained.

  An arm portion 14 is attached to the inner surface side of the main body portion 18. The arm portion 14 projects in the longitudinal direction of the main body portion 18. On the end portion side of the arm portion 14, a convex portion 42 that protrudes toward the outer surface side of the main body portion 18 is provided, and the convex portion 42 is locked to the retaining portion 32 on the window portion 10 side. Thereby, the protective cap 6 is detachably connected to the housing 4.

  FIG. 7 shows the dimension settings of the protective cap 6 and the window 10. The expansion width of the close contact portion 40 of the lock portion 20 of the protective cap 6 is XA, and the protruding length of the close contact portion 40 protruding from the inner surface of the main body portion 18 is YA. On the other hand, the expansion width of the window 10 on the housing 4 side is XB, and the height of the standing wall 16 including the inclined wall 30 from the contact surface 24 is YB.

The size relationship between these members is, for example,
XA> XB
YA> YB
XA−XB = 2 × ΔX> 0
The dimension relationship may be set. With such a dimension setting, the lock function and the water stop function of the protective cap 6 can be obtained by fitting with the window portion 10. In this case, if the inclination angle of the inclined wall surface 30 is θ1, and the inclination angle of the bent portion 38 is θ2, for example,
θ1 ≧ θ2
And it is sufficient.

  Due to such a dimensional relationship, a lock function and a water stop function that make use of the spring characteristics of the elastic material of the lock portion 20 can be obtained.

<Removal of protective cap 6>

  FIG. 8A shows the window portion 10 and the protective cap 6 before the protective cap 6 is attached. The arm portion 14 on the protective cap 6 side is inserted into the insertion portion 22 adjacent to the window portion 10, and the bent portion 38 of the lock portion 20 of the protective cap 6 is opposed to the window portion 10. As described above, the expansion width XA of the bent portion 38 is larger than the expansion width XB of the window portion 10 by 2 × ΔX. Therefore, the bent portion 38 is inserted into the window portion 10 by bending and deforming the bent portion 38 using the elasticity of the bent portion 38.

  FIG. 8B shows a state in which the bent portion 38 of the protective cap 6 is being inserted into the window portion 10. When a force is applied to the body portion 18 of the protective cap 6 from this state in the direction of the housing 4, the bent portion 38 slides the opening wall surface 26 of the standing wall portion 16 and reaches the inclined wall surface 30. The lock part 20 shown with a dashed-two dotted line has shown the original shape before insertion.

  C in FIG. 8 shows a state in which the bent portion 38 of the protective cap 6 has reached the inclined wall surface 30 on the window portion 10 side. The bent portion 38 transitions from a temporarily compressed state on the opening wall surface 26 side to a compressed state on the inclined wall surface 30 side that is expanded from the opening wall surface 26. That is, in the state where the inclined wall surface 30 is reached, the compressed state is more relaxed than the opening wall surface 26, but the close contact state is maintained in the compressed state.

  FIG. 9 shows the IX part of FIG. 8 in an enlarged manner. The bent portion 38 is brought into close contact with the inclined wall surface 30 by the contact portion 40 by surface contact. In this surface contact, a contact area by the contact portion 40 is obtained, and a restoring force from the bent state of the bent portion 38 acts. Due to this close contact state, the bent portion 38 is restrained by the inclined wall surface 30 due to the elasticity of the water-stopping material, thereby obtaining a lock function and a water-stop function.

  Thus, since the lock part 20 is provided with the spring property by an elastic material, it is bent according to the shape of the standing wall part 16 of the window part 10 at the time of insertion to the window part 10 of the housing 4. As shown in FIG. From this bent state, it comes into close contact with the inclined wall surface 30 on the side of the housing 4 by the action of the restoring force due to the spring property. Thereby, the lock function and water stop function of the lock part 20 are obtained. That is, the protective cap 6 can be fixed to the window portion 10 of the housing 4 by the lock function, and the window portion 10 can be water-stopped by the water-stop function.

<Formation of protective cap 6>

  FIG. 10 shows one method for forming the protective cap 6. As shown to A of FIG. 10, the main-body part 18 is shape | molded and the arm part 14 previously shape | molded by this main-body part 18 as another member is formed by 2 color molding. In this case, the main body 18 and the arm 14 may be integrally formed. The main body 18 is made of, for example, a hard synthetic resin or a flexible synthetic resin. The arm part 14 may be formed of a soft synthetic resin such as silicon rubber or elastomer as an example of an elastic material.

  As shown in FIG. 10B, the main body portion 18 and the arm portion 14 are installed in the cavities 46 of the molding dies 44-1 and 44-2, for example, a molding cavity 48 formed on the molding die 44-1 side. The water stop material 49 is injected into the inside. The water stop material 49 is, for example, an elastic material such as elastomer or silicon rubber.

  As a result, as shown in FIG. 10C, the lock portion 20 is molded and formed integrally with the main body portion 18. In such a forming method, the main body portion 18 is made of a two-color molding using a hard synthetic resin, the arm portion 14 is made of a soft synthetic resin, and the lock portion 20 is welded to the main body portion 18 made of the hard synthetic resin by a two-color molding. be able to.

  FIG. 11 shows another method for forming the protective cap 6. 11, the same parts as those in FIG. 10 are denoted by the same reference numerals. In this forming method, as shown in FIGS. 11A and 11B, a flat convex portion 50 is formed at the position where the lock portion 20 is formed in the main body portion 18 made of a hard synthetic resin, and the peripheral portion of the convex portion 50 is formed. The lock portion 20 may be formed by two-color molding. In this case, a cavity 46 that encloses the protrusion 50 may be formed on the mold 44-1 side. In addition, the convex part 50 which is a support means of the lock part 20 may be formed in the inner peripheral part of the lock part 20, and may be formed partially.

  Thus, if the convex part 50 which consists of the hard synthetic resin similar to the main-body part 18 is provided, while the main-body part 18 of the protective cap 6 can be supported by the convex part 50 as shown to C of FIG. The support part 36 of the lock part 20 formed in 18 can be reinforced. With such a configuration, it is possible to suppress the aging of the lock portion 20 of the protective cap 6 or to prevent plastic deformation.

  FIG. 12 shows another method for forming the protective cap 6. In FIG. 12, the same parts as those in FIG. As shown to A of FIG. 12, the main-body part 18 is shape | molded and the arm part 14 previously shape | molded as another member is attached to this main-body part 18, for example. A recess 52 is formed in the main body 18 at the site where the lock 20 is installed.

  As shown in FIG. 12B, the lock portion 20 attached to the main body portion 18 is molded with, for example, an elastomer as a water-stop material.

  Then, as shown in FIG. 12C, an adhesive 54 is installed in the recess 52 of the main body 18 of the protective cap 6, and the lock portion 20 is bonded by this adhesive 54. As described above, the lock portion 20 may be attached to the main body portion 18 by bonding. In such a forming method, the main body portion 18 is formed by two-color molding using a hard synthetic resin, the arm portion 14 is formed by a soft synthetic resin, and the lock portion 20 is bonded to the main body portion 18 made of the hard synthetic resin by two-color molding using a water-stopping material. be able to.

  FIG. 13 shows another method for forming the protective cap 6. In FIG. 13, the same parts as those in FIG. As shown in FIG. 13A, the body portion 18 is formed with a recess 52 at the installation site of the lock portion 20. As shown in FIG. 13B, the lock portion 20 attached to the main body portion 18 may be formed of, for example, an elastomer or silicon rubber as a water-stop material 49 (FIGS. 10 and 11) and may include a fixed surface portion 56. .

  As shown in FIG. 13C, an adhesive 54 may be installed in the recess 52 of the main body 18 of the protective cap 6, and the fixing surface 56 of the lock unit 20 may be bonded to the main body 18 with the adhesive 54. If the fixing surface portion 56 is provided in this way, the bonding surface between the main body portion 18 and the lock portion 20 is enlarged, so that the fixing strength of the lock portion 20 can be increased.

  FIG. 14 shows another method for forming the protective cap 6. 14, the same parts as those in FIG. 10 are denoted by the same reference numerals.

  As shown to A of FIG. 14, the shaping | molding cavity 58 containing the main-body part 18 and arm part 14 of the protective cap 6 is formed in the shaping | molding die 44-1 and 44-2. By the molding cavity 58, the main body 18 and the arm part 14 are integrally molded with the hard water stop material 51.

  For forming the lock portion 20, as shown in FIG. 14B, forming dies 45-1 and 45-2 are used. The molds 45-1 and 45-2 are provided with a cavity 46 that accommodates the main body 18 and the arm part 14, and the mold 45-1 is provided with a mold cavity 48 of the lock part 20. The molding cavity 48 may be filled with, for example, an elastomer that is a water stop material.

  Thereby, as shown to C of FIG. 14, the lock part 20 can be formed in the main-body part 18 which shape | molded the arm part 14 integrally by 2 color molding. In such a configuration, the number of parts constituting the protective cap 6 can be reduced, and the protective cap 6 having a water stop function and a lock function can be realized by a simplified molding process.

  FIG. 15 shows another method for forming the protective cap 6. 15, the same parts as those in FIG. 11 are denoted by the same reference numerals.

  As shown to A of FIG. 15, only the main-body part 18 of the protective cap 6 is shape | molded with a synthetic resin.

  For forming the arm portion 14 and the lock portion 20, as shown in FIG. 15B, forming dies 47-1 and 47-2 are used. The molds 47-1 and 47-2 are provided with a cavity 46 for housing the main body 18, and the mold 47-1 is provided with a mold cavity 48-1 of the lock part 20 and a mold cavity 48-2 of the arm part 14. . The molding cavities 48-1 and 48-2 are filled with a water stop material 49 such as an elastomer or silicon rubber.

  Thereby, as shown to C of FIG. 15, the arm part 14 and the lock | rock part 20 can be formed in the main-body part 18 by 2 color molding. In such a configuration, the number of parts constituting the protective cap 6 can be reduced, and the protective cap 6 having a water stop function and a lock function can be realized by a simplified molding process. In addition, the lock part 20 and the arm part 14 having spring properties can be formed of the same material, and by this same materialization, the lock part 20 sharing the water stop part is further strengthened, and damage to the lock part 20 can be prevented.

<Formation of the adhesion part 40>

  FIG. 16 shows a close contact structure between the bent portion 38 and the inclined wall surface 30. The contact form between the contact portion 40 and the inclined wall surface 30 of the bent portion 38 illustrated in FIG. 9 illustrates surface contact by the flat surface of the contact portion 40, whereas in FIG. The contact portion 40 of the bent portion 38 is a point contact with an arc surface. Also by such point contact, the surface pressure of the contact portion or the close contact portion can be increased. As shown to B of FIG. 16, the contact part 40 of the bending part 38 adheres by the point contact with the inclined wall surface 30, and a lock function and a water stop function are obtained.

  FIG. 17 shows another close contact structure between the bent portion 38 and the inclined wall surface 30. As shown to A of FIG. 17, you may form the V-shaped recessed part 60 in the inclined wall surface 30 side. On the other hand, if the close contact portion 40 of the bent portion 38 is formed with a V-shaped convex portion 62 that fits into the concave portion 60, the fitting between the concave portion 60 and the convex portion 62 as shown in FIG. In addition, a pressure-bonding state by elastic deformation of the bent portion 38 may be added to obtain a water stop function and a lock function. In such a configuration, the water stop function and the lock function can be further enhanced. In this case, the concave portion 60 may be formed on the bent portion 38 side, and the convex portion 62 may be formed on the inclined wall surface 30 side.

  FIG. 18 shows another close contact structure between the bent portion 38 and the inclined wall surface 30. As shown in FIG. 18A, a rectangular recess 64 may be formed on the inclined wall surface 30 side. On the other hand, if the close contact portion 40 of the bent portion 38 is formed with a quadrangular convex portion 66 that fits into the concave portion 64, the concave portion 64 and the convex portion 66 can be fitted as shown in FIG. In addition, a pressure-bonding state by elastic deformation of the bent portion 38 may be added to obtain a water stop function and a lock function. Such a configuration can further enhance the water stop function and the lock function. In this case, the concave portion 64 may be formed on the bent portion 38 side, and the convex portion 66 may be formed on the inclined wall surface 30 side.

<Effect of the first embodiment>

  (1) In the conventional protective cap (waterproof cap), the water stop structure is separately provided in the lock structure in addition to the main body 18 and the arm 14, and the water stop structure is formed by molding a hard member and a soft member in two colors. The part was additionally molded with silicon. On the other hand, in the said embodiment, the lock part 20 shares a water stop part, and the arm part 14 and the lock part 20 can utilize the common soft water stop material. For this reason, the structure and the manufacturing process are simplified by reducing the number of parts of the protective cap 6 and making the molding process common. For example, the protective cap 6 can be manufactured by single two-color molding.

  (2) The lock portion 20 includes a bent portion 38, and the lock portion 20 shares the water stop portion due to the elasticity (spring property) of the water stop material included in the bent portion 38. That is, both the lock function and the water stop function are realized by the single lock unit 20. For this reason, a lock structure and a water stop structure can be simplified and the installation space of the protective cap 6 with respect to the housing | casing 4 of the portable terminal device 2 can be reduced.

  (3) Since the water stop function and the lock function are integrated, if the lock function is not obtained, the water stop function deteriorates, so there is a disadvantage that only the water stop function is lowered even if the lock function is maintained. Absent.

  (4) The protective cap 6 does not have to be provided with a dedicated fixing structure such as a locking claw separately from the water stop, and it is not necessary to consider the waterproofness of the fixing claw. The installation space for each member for fixing and water stopping is not required. Thereby, size reduction and thickness reduction of the housing | casing 4 are achieved, and it contributes to size reduction and thickness reduction of electronic devices, such as the portable terminal device 2. FIG.

  (5) Since the lock unit 20 which shares the water stop part can provide a water stop function by the lock operation, if the lock operation is properly performed, the necessary water stop function can be obtained. Can eliminate anxiety such as fear of damage.

  (6) The protective cap 6 includes an arm portion 14, a main body portion 18 and a lock portion 20, and these members can be formed by simple two-color molding by the above-described forming method. For this reason, the manufacturing cost of the protective cap 6 can be reduced and the manufacturing time can be shortened.

  (7) The lock part 20 and the arm part 14 having flexibility can be made of the same material, and the manufacturing can be simplified and strengthened. For example, if an elastomer material is used for the lock part 20, the crushing property suitable for a water stop structure can be ensured, and if the stealing of the elastic material is performed, the elastomer material can be used to enhance the elastic characteristics. That is, both water-stopping and locking properties can be satisfied.

  (8) By using the same material for the lock part 20 and the arm part 14, the management of the material, the molding process, and the process can be simplified, contributing to cost reduction.

  (9) The water stop portion shared by the lock portion 20 is strengthened to perform the lock function, and as a result, the strength against damage is increased, and the water stop function can be protected from damage due to handling by the user. Thereby, the reliability of a product is improved.

[Second Embodiment]

  FIG. 19 shows a detachable structure between the housing 4 and the protective cap 6 of the mobile terminal device 2 according to the second embodiment.

  In the above embodiment, the lock portion 20 of the protective cap 6 is inserted into and fitted into the window portion 10, whereas the lock portion 20 of the protective cap 6 is replaced with the window portion 10 as shown in FIG. It may be fitted to the outside of the standing wall portion 16.

  In this embodiment, the bending direction of the lock portion 20 is opposite to that of the first embodiment, and an inclined wall surface 30 with which the bent portion 38 of the lock portion 20 hits is formed on the outer peripheral portion of the standing wall portion 16. Even in such a configuration, the water stop function and the lock function can be obtained by the bent portion 38 as in the above embodiment.

[Other Embodiments]

  (1) FIG. 20 shows a housing 4 and a protective cap 6 of a mobile terminal device 2 according to another embodiment. In the above embodiment, the arm portion 14 is provided outside the lock portion 20, but the arm portion 14 may be provided on the inner side surface portion of the lock portion 20 of the main body portion 18. With such a configuration, the insertion portion 22 of the arm portion 14 can be covered with the protective cap 6.

  (2) Although the portable terminal device 2 is illustrated in the above embodiment, it may be an electronic device that attaches or removes the protective cap 6, and may be a smartphone, a tablet terminal, an electronic game machine, a camera, or the like.

As described above, the most preferable embodiment of the technology of the present disclosure has been described. The present invention is not limited to the above description. Various modifications and changes can be made by those skilled in the art based on the gist of the invention described in the claims or disclosed in the embodiments for carrying out the invention. It goes without saying that such modifications and changes are included in the scope of the present invention.

2 Mobile terminal device 4 Housing 6 Protective cap 8 Display unit 10 Window unit 12 Connector 14 Arm unit 16 Standing wall unit 18 Main unit unit 20 Lock unit (water stop unit)
22 Insertion portion 24 Contact surface portion 26 Opening wall surface 28 Inner wall surface 30 Inclined wall surface 32 Retaining portion 34 Peripheral wall portion 36 Support portion 38 Bending portion 40 Adhering portion 42 Convex portion 44-1, 44-2 Mold 46 Cavity 47-1, 47-2 Mold 48, 48-1, 48-2 Mold cavity 49, 51 Water-stopping material 50 Convex part 52 Concave part 54 Adhesive 56 Fixed surface part 58 Molding cavity 60 Concave part 62 Convex part 64 Concave part 66 Convex part

Claims (3)

An electronic device including a cap member that can be attached to and detached from a window of a housing,
An electronic apparatus in which a lock portion that locks the cap member to the window portion and a water stop portion that stops the window portion are shared.   The electronic device according to claim 1, wherein at least the lock portion of the cap member is formed of a water-stop material and includes a close contact portion that is in close contact with the window portion. The electronic device according to claim 1, wherein the lock portion is fixed to a main body portion that covers the window portion or is integrally formed with the main body portion.

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