JP2011244371A - Housing structure of portable electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact portable terminal capable of maintaining a waterproof function.SOLUTION: A portable electronic device comprises: a first casing; a second casing disposed opposite to the first casing; a first engaging part disposed on the first casing; a second engaging part disposed on the second casing at a position opposite to the first engaging part to engage with the first engaging part; a waterproof packing disposed on a surface of the second casing opposite to the first casing; and a reinforcement frame disposed on the second casing.

Description

  The present invention relates to a case structure of a portable electronic device such as a mobile phone, PHS (Personal Handy phone System), PDA (Personal Data Assistance, Personal Digital Assistants).

  In recent years, portable terminals have been required to increase the rigidity of the housing while realizing a compact device size and satisfy the waterproof function even when used in harsh environments. On the other hand, since a terminal with a waterproof function has a large number of parts, the number of parts is reduced from the viewpoint of cost and man-hours, and cost reduction such as reduction of man-hours related to assembly is required.

  In patent document 1, in order to ensure waterproofness, the structure of the portable electronic terminal which arrange | positioned waterproof packing between the upper case and lower case in a portable terminal, and screwed the upper and lower cases and waterproof packing in the four corners. It is shown.

  In Patent Document 2, a battery-shaped waterproof packing is provided on a battery lid of a portable electronic device, and a tip lock claw that can be engaged with a locking projection of the casing. A structure for preventing water from entering the housing by press contact is shown.

JP 2005-340683 A JP 11-025940

  The structure of Patent Document 1 is a structure in which a waterproof packing is provided between the upper and lower cases, and the waterproof packing is fixed by screwing to maintain airtightness. Therefore, in the above structure, it is necessary to secure an area for screwing, and there is a problem in terms of downsizing the apparatus. On the other hand, if the number of screws is reduced to reduce the size, there is a problem in terms of rigidity.

  Moreover, the structure of patent document 2 is a structure which joins the housing | casing and battery cover of a portable electronic device with a latching protrusion and a front-end | tip lock nail | claw. For this reason, the battery lid deforms due to external impact or thermal deformation when used in a high-temperature environment, causing waterproof packing between the case and misalignment or twisting. There was a problem.

  An object of the present invention is to provide a “casing structure of a portable electronic device” that solves the above-described problems.

  The configuration of the present invention includes a first casing, a second casing provided opposite to the first casing, a first locking portion provided in the first casing, and a second casing. A second locking portion provided at a position facing the one locking portion and mated with the first locking portion; a waterproof packing provided on a surface of the second housing facing the first housing; and a second housing A portable electronic device is characterized in that a reinforcing frame is provided on the body.

  The portable terminal according to the present invention can maintain the waterproof function and can reduce the size of the device.

1 is an external perspective view of a mobile phone to which the present invention is applied. It is the perspective view which decomposed | disassembled the display case. It is sectional drawing of the display case in 1st Embodiment. It is the top view which provided the sheet | seat for reinforcement in a 2nd housing | casing. It is sectional drawing of a display case when the sheet | seat for reinforcement is not provided. FIG. 5 is a cross-sectional view when assembling a display case when no reinforcing sheet is provided. It is sectional drawing of the display case in 2nd Embodiment.

  [First Embodiment] A preferred embodiment for carrying out the present invention will be described below with reference to the drawings. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following.

  [Description of Structure] FIG. 1 shows the structure of a portable electronic device 1 having the housing structure of the first embodiment. Hereinafter, the structure when the housing structure is provided in a portable electronic device will be described.

  The portable electronic device 1 includes a display case 1, an input case 2, and a hinge part 3. The display case 1 and the input case 2 are connected to each other by a hinge portion 3 so as to be rotatable, and the display case 1 and the input case 2 are rotated around the hinge portion 3 so as to be overlapped with each other and carried in a closed state. In addition, the display case 1 and the input case 2 are rotated around the hinge portion 3 and used in an open state.

  The display case 1 is formed in a substantially rectangular thin box shape as shown in FIG. 1, and the display module 4 is housed therein as shown in FIG. The display module 4 includes a circuit board (not shown), and the circuit board has a configuration in which various electronic components are provided in addition to the display device 5 and the speaker 6. The display device 5 is a flat display element such as a liquid crystal display element or an EL (Electroluminescence) display element, and is disposed corresponding to the opening of the display case 1 facing the input case 2 as shown in FIG. In this state, various information such as telephone information is displayed electro-optically.

  As shown in FIG. 1, the input case 2 is formed in a box shape having substantially the same size as the display case 1, and an input module (not shown) is accommodated therein, and in this state, the input case 2 is rotated around the hinge portion 3. It is configured to overlap the display case 1 when moved and closed. In this case, as shown in FIG. 1, a key input unit 7 and a microphone unit (not shown) are provided on the opposing surface of the input case 2 that faces the display case 1. The key input unit 7 includes various keys such as numeric keys, character keys, a call key, a power key, and a multi-function key.

  The hinge portion 3 includes a first projection portion 8, a second projection portion 9, and a connecting shaft (not shown) for rotatably attaching the both. As shown in FIG. 1, the display case 1 is provided with a cylindrical first protrusion 8 at a proximal end portion (lower side portion in FIG. 1) on the front side, and the input case 2 has a front proximal end portion (FIG. 1). Then, a pair of second protrusions 9 provided on both sides of the upper side) is provided. The hinge part 3 arrange | positions the 1st protrusion 8 of the display case 1 between a pair of 2nd protrusions 9 of the input case 2, and connects the 1st protrusion 8 and the 2nd protrusion 9 by a connection axis | shaft in this state. Each of the first protrusion 8 and the second protrusion 9 is configured to rotate relative to the connecting shaft by attaching them rotatably.

  As described above, in this embodiment, the folding type portable electronic device is described. However, the present invention is not limited to this and is applicable to all portable electronic devices such as a slide type and a biaxial hinge. Can do.

  In the display case 1 and the input case 2, the display module 4 and the input module (not shown) housed inside are electrically connected by a connecting member (not shown) inserted through the hinge portion 3. Yes. The display case 1 and the input case 2 have substantially the same structure. Therefore, the display case 1 will be described below. However, the following description can also be applied to the input case 2.

  Next, as shown in FIG. 2, a structure in which the present invention is applied to the display case 1 will be described. The display case 1 includes a first housing 10, a second housing 11 provided to face the first housing 10, and a display module provided between the first housing 10 and the second housing 11. 4. Although the 1st housing | casing 10 and the 2nd housing | casing 11 are resinous, this invention is not limited to this.

  As shown in FIG. 3, the cross section of the first housing 10 has a U shape. The second housing 11 is provided to face the first housing 10.

  The second housing 11 has a flat plate shape, and further has a frame-like member 14 provided over the entire periphery of the edge portion of the surface facing the first housing 10, and a groove 15 is formed at the top of the frame-like member 14. ing. The waterproof packing 16 is continuously provided around the entire circumference of the groove 15, and at least a part of the waterproof packing 16 protrudes from the groove 15.

The first housing 10 is provided with a first locking portion 12 at the end. The second housing 11 is provided with a second locking portion 13 at a position facing the first locking portion 12.
The 2nd latching | locking part 13 may be provided in the side surface of the 2nd housing | casing 11, and may be provided in the outer surface of the frame-shaped member 14 provided in the 2nd housing | casing.

  The display case 1 is configured by fitting a first locking portion 12 provided in the first housing 10 into a second locking portion 13 provided in the second housing 11. In addition, about the place where the 1st latching | locking part 12 and the 2nd latching | locking part 13 are arrange | positioned, if both can fit, it will not specifically limit.

  The 1st latching | locking part 12 may be provided continuously over the peripheral part of the 1st housing | casing 10, and the several 1st latching | locking part 12 may be provided at intervals. Similarly, the second locking portion 13 may be provided continuously over the peripheral edge of the second housing 11, or a plurality of second locking portions 13 may be provided at intervals. However, the 1st latching | locking part 12 and the 2nd latching | locking part 13 are provided in the position which opposes.

  About the shape of the 1st latching | locking part 12 and the 2nd latching | locking part 13, what is necessary is just to be able to fix the 1st housing | casing 10 and the 2nd housing | casing 11 by fitting both. That is, the shape of the first locking portion 12 and the second locking portion 13 may be a combination of protrusion shapes as shown in FIG. 3, or one having a protrusion shape and the other having a recess or opening. May be.

  A display module 4 is provided inside the frame-like member 14 and is fixed to the second housing 11. The frame-shaped member 14 may be bonded to the second housing 11 with an adhesive such as an epoxy resin, or may be integrally formed of the same material as the second housing 11. It is not limited to this.

  The material of the waterproof packing 16 is rubber or other elastic material. The waterproof packing 16 is formed integrally with the second housing 11 by wrapping the edge portion of the second housing 11 by an insert molding method.

  The waterproof packing 16 is in close contact with the edge portion of the first housing 10 with the first housing 10 butted against the second housing 11. As a result, the portion protruding from the groove 15 of the waterproof packing 16 is compressed by the first housing 10. Since the waterproof packing 16 is provided over the entire groove 15 of the second housing 11, it is possible to prevent water from entering the display module 4 inside the waterproof packing 16.

  Further, the second housing 11 is provided with a reinforcing frame 17 on the surface facing the first housing 10. The reinforcing frame 17 is installed inside a waterproof packing 16 provided over the entire periphery of the edge portion. The size of the reinforcing frame 17 is slightly larger than that of the frame-like member 14 and is lightly press-fitted and installed.

  The reinforcing frame 17 prevents the second casing 11 from being bent inward by an external impact or the like, and increases the rigidity of the second casing 11. As shown in FIG. 4, the reinforcing frame 17 may be provided on the surface of the second casing facing the first casing at intervals in a plurality of rows, or stacked vertically in a cross shape. It may be provided. However, the position where the reinforcing frame 17 is installed may be a place where the rigidity of the second housing 11 is increased.

  The reinforcing frame 17 may be fixed to an internal part such as the display module 4 provided inside the waterproof packing 16 with a double-sided tape or the like. The material of the reinforcing frame 17 may be the same material as the first housing 10 and the second housing 11 or may be other materials.

  [Description of Functions and Effects] The display case 1 is assembled as follows. The first casing 10 is placed on the second casing 11 from above. Thereafter, the first locking portion 12 of the first housing 10 is fitted (fitted) to the second locking portion 13 provided in the second housing 11. As a result of the above assembly, the waterproof packing 16 provided in the second housing 11 is compressed between the first housing 10 and the second housing 11, and the first reaction force causes the compression of the waterproof packing 16 to return. The airtightness between the housing 10 and the second housing 11 is maintained, and the water is prevented from entering the waterproof packing 16.

  Consider the case where there is no reinforcing frame 17 as shown in FIG. The display case 1 is fixed and kept airtight between the first housing 10 and the second housing 11 by a reaction force (in the direction of the arrow (B)) to return from the compression of the waterproof packing 16. It is not fixed against the force in the surface direction. Therefore, when there is no reinforcing frame 17, when the display case 1 receives an external impact or the like, a force acts in the surface direction of the second housing 11 (direction of arrow (C) or (D)). As a result, the second housing 11 is bent inward, and the first locking portion 12 of the first housing 10 is easily detached.

  Similarly, the same problem occurs when the second housing 11 is bent in the surface direction (the direction of the arrow (C) or (D)) due to thermal deformation during use in a high temperature environment.

  In the present embodiment, in order to prevent them, it is possible to prevent the second casing 11 from being deformed inward by installing the reinforcing frame 17. The reinforcement frame 17 prevents the first locking portion 12 or the second locking portion 13 of the first housing 10 from coming off by suppressing the inward deformation of the second housing 11, and the waterproof packing 16. The compressed state can be maintained. As a result, the airtightness between the first housing 10 and the second housing 11 in the display case 1 can be maintained, and waterproof performance can be maintained.

  Another effect of providing the reinforcing frame 17 will be described. As shown in FIG. 6, when there is no reinforcing frame 17, when the packing 16 is installed in the second housing 11 and the first housing 10 is to be fitted, the first locking portion 12 or the second engagement It is necessary to temporarily deflect the first casing 10 and the second casing 11 in the surface direction until the stopper 13 is completely fitted. However, if the second housing 11 is bent, the waterproof packing 16 is entangled, and displacement or twist occurs.

  If the first housing 10 is fitted in a state where the waterproof packing 16 is displaced or twisted, the waterproof packing 16 cannot be sufficiently compressed, resulting in poor airtightness.

  Therefore, by installing the reinforcing frame 17 inside the waterproof packing 16 provided on the entire circumference of the edge of the second casing, the second casing 11 is fitted when the first casing 10 and the second casing 11 are fitted together. Deflection of the housing 11 can be prevented. Therefore, it is possible to bend only the first housing 10 and to fit the first housing 10 and the second housing 11, prevent the waterproof packing 16 from being displaced or twisted, and to prevent airtightness generated during assembly. Sexual defects can also be prevented.

  In the present embodiment, the reinforcing frame 17 is made slightly larger than the frame-shaped member 14, and the reinforcing frame 17 is provided by being lightly press-fitted inside the frame-shaped member 14. Therefore, even if the dimensions of the components vary, the deformation of the second housing 11 can be prevented more reliably.

  [Second Embodiment] FIG. 7 is a cross-sectional view showing a configuration of a portable electronic device according to a second embodiment, which corresponds to FIG. 3 in the first embodiment. The electronic device according to the present embodiment has the same configuration as that of the electronic device according to the first embodiment except that the waterproof projection 18 is provided in the first housing 10.

  [Description of Structure] As shown in FIG. 7, a waterproof projection 18 is provided on the surface of the first housing 10 facing the second housing 11. The waterproof protrusion 18 is provided at a position facing the waterproof packing 16. The waterproof protrusion 18 may be provided over the entire periphery of the edge portion of the surface of the first housing 10 facing the waterproof packing 16 or may be provided on a part of the edge portion.

  [Explanation of Action / Effect] When the first housing 10 and the second housing 11 are brought into contact with each other, the top of the waterproof projection 18 comes into contact with the waterproof packing 16 and the waterproof packing 16 It will be in the state where it was pushed into waterproofing projection 18. Therefore, the adhesion between the first housing 10 and the second housing 11 of the waterproof packing 16 is improved, and the waterproof function is improved. In addition, when the waterproof projection 18 is provided over the entire periphery of the edge of the first housing, the prevention function is further improved.

DESCRIPTION OF SYMBOLS 1 Display case 2 Input case 3 Hinge part 4 Display module 5 Display apparatus 6 Speaker 7 Key input part 8 1st protrusion part 9 2nd protrusion part 10 1st housing | casing 11 2nd housing | casing 12 1st latching | locking part 13 2nd Locking portion 14 Frame upper member 15 Groove 16 Waterproof packing 17 Reinforcing frame 18 Waterproof protrusion

Claims (10)

A first housing, a second housing provided facing the first housing, a first locking portion provided in the first housing, and the first locking portion in the second housing A second locking portion provided at an opposed position and mated with the first locking portion;
A waterproof packing provided on a surface of the second casing facing the first casing;
A portable electronic device, wherein a reinforcing frame is provided in the second housing.   The first locking portion is provided continuously over the entire periphery of the edge of the first housing, and the second locking portion is provided continuously over the entire periphery of the edge of the second housing. The portable electronic device according to claim 1, wherein   A plurality of the first locking portions are provided at predetermined intervals on the edge of the first housing, and the second locking portions are opposed to the first locking portions in the second housing. The portable electronic device according to claim 1, wherein the portable electronic device is provided at the position.   The portable electronic device according to claim 2, wherein the waterproof packing is continuously provided on the entire periphery of the edge of the second housing.   5. The portable electronic device according to claim 4, wherein the waterproof packing is provided in a groove provided on an entire periphery of the edge of the second housing, and partially protrudes from the groove.   The portable electronic device according to claim 5, wherein a waterproof protrusion is provided at a position facing the waterproof packing in the first housing.   The portable electronic device according to claim 1, wherein the reinforcing frame is provided inside the waterproof packing.   The portable electronic device according to claim 7, wherein the reinforcing frame is fixed to the second casing or an internal component mounted on the second casing with a double-sided tape.   The portable electronic device according to claim 8, wherein the reinforcing frame is provided in a plurality of rows on the surface of the second casing that faces the first casing.   9. The portable electronic device according to claim 8, wherein the reinforcing frame is provided on a surface of the second casing facing the first casing so as to intersect in the vertical direction.

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