JP2014011741A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal capable of avoiding the degradation of water-proof power due to reaction force from a waterproof seal when closing a terminal cover, and detecting an opening state of the terminal cover simply and reliably.SOLUTION: A portable terminal includes: a waterproof packing 6 on the circumference of a terminal cover 4; and a cover fixing member 7 fixed to the circumference of a terminal connection aperture 5 in a state that the terminal cover 4 is pressed on the circumference of the terminal connection aperture 5. A slip-off avoiding projection 7a engaged in the circumference of the terminal connection aperture 5 is formed at the tip of the cover fixing member 7 in a prescribed rotation angle, and a closing detection switch 13 for detecting a closing position at which the slip-off prevention projection 7a closes the terminal cover 4, is formed in the back side cabinet 3.

Description

  The present invention relates to a portable terminal having a casing in which a terminal connection opening is formed and a terminal cover covering the terminal connection opening.

  Conventionally, with respect to a waterproof lid structure used for a mobile terminal such as a smartphone or a mobile phone, a structure formed by a lid provided with a groove around which a waterproof seal fits, a waterproof seal and a casing for embedding it, 2 A structure formed by a lid provided with a shape that blocks a water intrusion path of a waterproof seal by color molding or the like and a casing that embraces the lid is known.

  In this type of waterproof lid structure, a waterproof seal having a waterproof function is displaced by a certain amount of load to increase the stability against water intrusion.

  However, since a certain amount of displacement is required, a reaction force in the opening direction is always applied to the waterproof lid, which may reduce the reliability of waterproofing.

  For example, in Patent Document 1, a lock lever having a protruding portion that locks and frees a cover on a main body by a rotating operation, and a shaft portion in which a hole penetrating in a direction orthogonal to the rotating shaft of the protruding portion is formed. In conjunction with the operation of the protrusion, the cover includes an elastic protrusion that holds the cover in a locked and free state, and a leaf spring that is fitted into a hole formed in the shaft.

JP 2005-129770 A

  By the way, in a portable terminal, a connection terminal into which a card-type storage medium such as an SD card or a SIM card is inserted is often covered with a terminal cover, and it is necessary to avoid damage caused by taking out a card during writing / reading. Therefore, it is necessary to provide means for detecting that the terminal cover is opened. In the invention of Patent Document 1, it is necessary to separately provide such detection means.

  The present invention has been made in view of the above points, and the object of the present invention is to easily and reliably prevent the waterproofing power from being reduced by the reaction force received from the waterproof seal when the terminal cover is closed. It is to detect the open state of the cover.

  In order to achieve the above object, according to the present invention, the open state of the terminal cover is detected in accordance with the opening / closing operation of the cover fixing member for fixing the terminal cover.

Specifically, in the first invention,
Assume a portable terminal having a housing in which a terminal connection opening is formed and a terminal cover covering the terminal connection opening.

And the mobile terminal
Waterproof packing provided on the periphery of the terminal cover or the terminal connection opening;
A cover fixing member for fixing the terminal cover to the terminal connection opening periphery in a state where the terminal cover is pressed against the terminal connection opening periphery;
The cover fixing member is formed at its tip with a retaining protrusion that engages with the peripheral edge of the terminal connection opening at a predetermined rotation angle.
A closing detection switch for detecting a closing position where the retaining protrusions close the terminal cover is provided inside the casing.

  According to the above configuration, since the terminal cover is prevented from coming off by engaging the retaining protrusion of the cover fixing member with the peripheral edge of the terminal connection opening, waterproofness is ensured. Further, when the terminal cover is fixed with the cover fixing member, the retaining projections turn on or off the close detection switch, so that the closed position of the terminal cover is reliably detected with the opening / closing operation. If the card-type storage medium can be written and read at this closed position, the card being written and read cannot be taken out and damaged.

In the second invention, in the first invention,
A cam surface is formed to advance the cover fixing member in the axial direction when the cover fixing member changes from the open position to the closed position;
The closing detection switch is turned on or off in a state where the cover fixing member advances in the axial direction by the cam surface.

  According to the above configuration, when the cover fixing member is rotated to the closed position, the cover fixing member advances in the axial direction by the cam surface and the waterproof seal is pressed to ensure waterproofness, and the retaining protrusions Secured in that state. In addition, since the close switch is turned on or off when the closed state is surely established, if the writing and reading of the card-type storage medium and the like are enabled accordingly, the damage due to the removal of the card-type storage medium etc. Is reliably prevented.

In the third invention, in the second invention,
The cam surface is composed of inclined surfaces which are formed on the retaining protrusion and the terminal connecting opening peripheral edge and come into contact with each other.

  According to said structure, waterproofness can be improved with a cover fixing member by simple structure.

  As described above, according to the present invention, a retaining protrusion that engages with the peripheral edge of the terminal connection opening at a predetermined rotation angle is formed at the tip of the cover fixing member, and the retaining protrusion is a terminal inside the housing. By providing a close detection switch that detects the closing position to close the cover, the terminal cover can be opened easily and reliably without a drop in the waterproofing force due to the reaction force received from the waterproof seal when the terminal cover is closed. Can be detected.

It is a perspective view which shows the closed state of the terminal cover in the mobile telephone which concerns on embodiment of this invention. It is a perspective view which shows a mobile telephone. It is a perspective view which expands and shows a terminal cover and its periphery. It is a disassembled perspective view which shows the mobile phone divided | segmented vertically. It is a perspective view which expands and shows a terminal cover and its periphery. It is a perspective view which expands and shows a cover fixing member. It is a perspective view which expands and shows the terminal connection opening periphery from the inner side. FIG. 2 is a view corresponding to FIG. 1 showing an opening position of the terminal cover.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 2 shows a mobile phone 1 (smart phone) as a mobile terminal according to an embodiment of the present invention, and the mobile phone 1 is fitted to the front side cabinet 2 including the display unit and the back side of the front side cabinet 2. It has the back side cabinet 3 as a housing | casing.

  As shown in FIG. 3, a terminal cover 4 that covers a connection terminal (not shown) into which a card-type storage medium such as an SD card or a SIM card is inserted is provided on the upper right side of the back side cabinet 3. The terminal cover 4 covers an oval-shaped terminal connection opening 5 formed in the back side cabinet 3. However, the shape of the terminal connection opening 5 is not particularly limited, such as circular or rectangular.

  As shown in FIGS. 4 and 5, a packing contact portion 5 a is formed on the periphery of the terminal connection opening 5 so that a waterproof packing 6 fitted into or integrally formed with the outer periphery of the lower surface of the terminal cover 4 is contacted. Yes.

  An engaged portion 9 having a locking through hole 8 for fixing the cover fixing member 7 for fixing the terminal cover 4 is provided on the further back side of the packing contact portion 5a.

  On the other hand, as shown in FIG. 6, the cover fixing member 7 has a retaining projection 7a at the lower end and a disk-like operation portion 7b at the upper end. The cover fixing member 7 can be rotated by inserting a pointed object such as a claw into the linear groove 7c of the operation portion 7b. As shown in FIG. 5, the terminal cover 4 is formed with an insertion hole 4a through which the retaining projection 7a is inserted, and a counterbore 4b formed at the periphery of the insertion hole 4a and accommodating the operation portion 7b. Yes. The cover fixing member 7 is configured to prevent the cover assembly 15 from coming off with the E-ring 11 while the rubber O-ring 10 is sandwiched between the upper surface of the counterbore 4b and the lower surface of the operation portion 7b.

  An insertion protrusion 4 c is formed at the left end of the terminal cover 4. This insertion projection 4c is inserted into the left side of the terminal connection opening 5, the retaining projection 7a is inserted into the locking through hole 8, and the waterproof packing 6 is pressed against the packing contact portion 5a. 7 is rotated so that the retaining projection 7a is engaged with the periphery of the terminal connection opening 5 at a predetermined rotation angle.

  On the other hand, as shown in FIG. 4, a substrate 12 is accommodated in the back side cabinet 3, and the substrate 12 is turned on when the retaining protrusion 7 a is in a closed position for closing the terminal cover 4. A close detection switch 13 is provided. The closing detection switch 13 is supported at its upper end so that the switch portion 14 can swing, and is arranged so that the retaining projection 7 a abuts against the switch portion 14.

  As shown in an enlarged view in FIG. 6, the retaining projection 7a is composed of a pair of projections having an arcuate outer peripheral surface, and on the upper surface of each projection, a first inclined surface 7d, a second inclined surface 7e, Is formed opposite the Yamagata. On the other hand, as shown in an enlarged view in FIG. 7, the locking through-hole 8 has a pair of notches having an arcuate inner peripheral surface that is slightly larger than the outer shape of the retaining projection 7a, and is located at the opposite position. There are three inclined surfaces 8a and a fourth inclined surface 8b.

  With such a configuration, the cover fixing member 7 is rotated so that the first inclined surface 7d gets over the third inclined surface 8a, or the second inclined surface 7e gets over the fourth inclined surface 8b. The terminal cover 4 is configured to be stable in the closed state.

  Next, the opening / closing operation of the terminal cover 4 according to the present embodiment will be described.

  First, as shown in FIG. 5, with the rubber O-ring 10 sandwiched between the upper surface of the counterbore 4b of the cover fixing member 7 and the lower surface of the operation portion 7b, the E-ring 11 is fitted into the retaining projection 7a. The cover assembly 15 is assembled.

  Next, the insertion protrusion 4 c is inserted into the left side of the terminal connection opening 5, and the retaining protrusion 7 a is inserted into the locking through hole 8. At this time, as shown in FIG. 8, the retaining protrusion 7 a does not contact the switch portion 14, and the close detection switch 13 is off.

  Next, the cover fixing member 7 is rotated in a state where the terminal cover 4 is pressed against the periphery of the terminal connection opening 5 and the waterproof packing 6 is pressed.

  Then, for example, the first inclined surface 7d abuts on the third inclined surface 8a and further rotates, so that the cover fixing member 7 proceeds in the axial direction (downward) and rides on while compressing the waterproof packing 6. At this time, as shown in FIG. 1, when the retaining projection 7a comes into contact with the switch portion 14 and swings, the close detection switch 13 is turned on. In this state, the card-type storage medium can be written and read. Since the retaining projection 7a of the cover fixing member 7 engages with the periphery of the terminal connection opening 5, the terminal cover 4 is reliably prevented from being detached, and waterproofness is ensured with a simple configuration.

  On the contrary, when the terminal cover 4 is opened, if the cover fixing member 7 is rotated in the reverse direction, the first inclined surface 7d slides on the third inclined surface 8a in the axial direction (upward) as shown in FIG. The switch unit 14 is turned off, and writing and reading of the card type storage medium are prohibited.

  Next, the retaining projection 7a is removed from the locking through hole 8, the terminal cover 4 is removed, and the card-type storage medium is taken in and out. In this way, since the card-type storage medium being written and read is not taken in / out, the card-type storage medium is not damaged.

  Therefore, according to the mobile phone 1 according to the present embodiment, the open state of the terminal cover 4 is detected easily and reliably without reducing the waterproofing force due to the reaction force received from the waterproof seal when the terminal cover 4 is closed. Thus, damage to the card-type storage medium can be prevented.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the said embodiment, although the waterproof packing 6 was provided in the lower surface of the terminal cover 4, you may provide the waterproof packing 6 in the packing contact part 5a side.

  In the above-described embodiment, the close detection switch 13 is configured to be turned on at the closed position of the terminal cover 4, but the timing at which the retaining protrusion 7 a pushes the switch unit 14 to be turned off at the closed position. May be changed.

  The terminal cover 4 is a cover that covers the connection terminal for the card-type storage medium. However, the terminal cover 4 is not limited to this. For the precision parts that have problems if the connection terminal is connected or disconnected while the power is on. It can be applied to a cover that covers the connection terminal.

  In the above embodiment, the mobile terminal is a mobile phone, but may be a PHS (Personal Handy-phone System), a PDA (Personal Digital Assistant), a personal computer, a mobile tool, an electronic dictionary, a calculator, a game machine, or the like.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

  As described above, the present invention is useful for a mobile terminal such as a mobile phone having a terminal cover.

1 Mobile phone (mobile terminal)
2 Front cabinet
3 Rear cabinet
4 Terminal cover
4a Insertion hole
4b counterbore
4c Protrusion for insertion
5 Terminal connection opening
5a Packing contact part
6 Waterproof packing
7 Cover fixing member
7a Protrusion for retaining
7b Operation unit
7c Straight groove
7d 1st inclined surface
7e 2nd inclined surface
8 Locking through hole
8a 3rd inclined surface
8b 4th inclined surface
9 engaged parts
10 O-ring
11 E-ring
12 Substrate
13 Close detection switch
14 Switch part
15 Cover assembly

Claims (3)

In a portable terminal having a housing in which a terminal connection opening is formed and a terminal cover covering the terminal connection opening,
Waterproof packing provided on the periphery of the terminal cover or the terminal connection opening;
A cover fixing member for fixing the terminal cover to the terminal connection opening periphery in a state where the terminal cover is pressed against the terminal connection opening periphery;
The cover fixing member is formed at its tip with a retaining protrusion that engages with the peripheral edge of the terminal connection opening at a predetermined rotation angle.
A portable terminal characterized in that a closing detection switch for detecting a closing position in which the retaining projections close the terminal cover is provided inside the casing. The mobile terminal according to claim 1,
A cam surface is formed to advance the cover fixing member in the axial direction when the cover fixing member changes from the open position to the closed position;
A portable terminal, wherein the closing detection switch is turned on or off in a state in which the cover fixing member is advanced in the axial direction by the cam surface. The mobile terminal according to claim 2,
The portable terminal according to claim 1, wherein the cam surface is formed of inclined surfaces that are formed on the retaining protrusion and the peripheral edge of the terminal connection opening and that contact each other.

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