JP2012114609A - Portable electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electronic apparatus reducing occurrence of chattering sound in a simple configuration.SOLUTION: A mobile phone 1 includes: a front case 2a; a rear case 2b having a notch 260 disposed outside the front case 2a; a pressing portion 310 disposed between the front case 2a and the rear case 2b and exposed externally having a notch 460 therebetween; a side key component 16b having a stopper part 320; a key sheet 40C disposed between the front case 2a and the side key component 16b; and a sponge component which is disposed between the key sheet 40C and the side key component 16b so as to have an elastic force, and energizes the side key component 16b to head for the inner surface of the rear case 2b so that the stopper part 320 abuts on the inner surface of the rear case 2b.

Description

  The present invention relates to a portable electronic device such as a portable electronic device.

Conventionally, there is a type having a side key in a mobile phone as a portable electronic device. In addition, there are types of mobile phones that have a waterproof function.
Here, as a side key structure in a cellular phone having a waterproof function, a side key packing integrated with metal and rubber is fitted into a hole formed in a side surface of the lower case, and the side key packing is pushed by pressing the key top. Thus, there has been proposed a structure in which a key switch in the lower case can be pressed (for example, see Patent Document 1).

  In recent years, there is a mobile phone having a waterproof function by arranging a key sheet (rubber sheet) between a case and a key top without using a side key packing. This type of mobile phone has a structure in which a key top pusher is inserted into a hole of a lower case together with a key sheet, and the switch is pressed together with the key sheet.

JP 2008-85140 A

  However, in the conventional mobile phone, the key top needs to be configured to be moved by a pressing operation from the user, and therefore needs to be separated from the key sheet by a key stroke (excluding the pusher portion). There is. That is, the key top may easily vibrate due to vibration generated by an internal member (for example, a vibrator) of the mobile phone. In this case, a so-called chatter sound (buzzing sound, rattling sound) is generated.

In order to suppress the occurrence of chatter noise, it is necessary to design (manufacture) the key top so that the key top is always pressed against an external cover disposed outside the key sheet or key top.
In this case, it is necessary to make the design error very small. When the dimensional error is large, the key top is pressed against the key sheet with excessive pressing force, or is disposed away from the outer cover. If it does so, a switch part may be pushed down arbitrarily and generation | occurrence | production of a chatter sound may not be eliminated.

  An object of this invention is to provide the portable electronic device by which generation | occurrence | production of the chatter sound was suppressed by simple structure.

  The present invention provides a first case member in which a first through hole is formed, a key board accommodated in the first case member, and mounted on the key board, and disposed to face the first through hole. Between the first case member and the second case member, the second case member disposed outside the first case member and having a second through-hole or notch formed therein, A protruding portion disposed and inserted into the first through hole; a pressing portion having a pressing surface exposed to the outside through the second through hole or the notch; and an outer edge of the pressing portion. A key member having a retaining part capable of coming into contact with the inner surface of the second case member, a planar planar part disposed between the first case member and the key member, and the switch part. And the first through-hole disposed between the protrusion and the protrusion A key sheet having an insertion portion to be inserted into the key sheet, and an elastic force between the key portion and the flat surface portion of the key sheet. The present invention relates to a portable electronic device comprising: an elastic member that urges the key member toward the inner surface of the second case member so as to be in contact with the inner surface.

  Moreover, it is preferable that the surface on the opposite side to the said press surface in the said press part is spaced apart from the said plane part in the said key sheet.

  Moreover, it is preferable that the said key member has a recessed part formed in an inner surface side, and a part of said elastic member is accommodated by the said recessed part.

  In addition, in a state where the pressing surface of the key member is not pressed from the outside, it is preferable that the protruding portion is disposed apart from the key sheet.

  The present invention provides a first case member in which a first through hole is formed, a key board accommodated in the first case member, and mounted on the key board, and disposed to face the first through hole. Between the first case member and the second case member, the second case member disposed outside the first case member and having a second through-hole or notch formed therein, A protruding portion disposed and inserted into the first through hole; a pressing portion having a pressing surface exposed to the outside through the second through hole or the notch; and an outer edge of the pressing portion. A key member having a retaining portion capable of contacting an inner surface of the second case member, and an elastic force between the first case member and the key member, and the retaining member. Part contacts the inner surface of the second case member An elastic member biases toward the inner surface of the second case member said key member so as to be state, a portable electronic device equipped with.

  ADVANTAGE OF THE INVENTION According to this invention, the portable electronic device by which generation | occurrence | production of the chatter sound was suppressed by simple structure can be provided.

FIG. 3 is an external perspective view in a state where the mobile phone 1 is opened. FIG. 6 is an exploded perspective view for explaining members constituting the operation unit side body 2. FIG. 4 is an exploded perspective view for explaining members constituting the display unit side body 3. It is AA sectional drawing in FIG. 5 is a cross-sectional view for explaining the operation of the mobile phone 1. FIG. FIG. 5 is a cross-sectional view illustrating the operation in the mobile phone 1.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
With reference to FIG. 1, a basic structure of a mobile phone 1 as a mobile electronic device will be described. FIG. 1 shows an external perspective view of the cellular phone 1 in an opened state.

As shown in FIG. 1, the mobile phone 1 includes an operation unit side body 2 and a display unit side body 3. In addition, the mobile phone 1 includes a connecting unit 4 that connects the operation unit side body 2 and the display unit side body 3 so as to be openable and closable.
The mobile phone 1 is configured to be able to change (deform) between an open state and a closed state. Here, the closed state is a state in which the operation unit side body 2 and the display unit side body 3 are arranged so as to overlap each other, and in detail, predetermined surfaces of both the housings face each other. Is placed in

The operation unit side body 2 has an operation unit side inner surface 2A and an operation unit side outer surface 2B. 2 A of operation part side inner surfaces are surfaces arrange | positioned facing 3 A of display part side inner surfaces of the display part side housing | casing 3, when the mobile telephone 1 is a closed state.
The outer surface (outer surface) of the operation unit side body 2 includes a front case 2a, a rear case 2b, and a battery cover 2c.
In the operation unit side body 2, an operation key group 11, a voice input unit 12 for inputting a voice uttered by a user during a call, and a main power supply operation unit 19 are arranged so as to be exposed to the outside. In the present embodiment, the operation key group 11 (excluding the side key 16), the voice input unit 12, and the main power supply operation unit 19 are arranged side by side on the operation unit side inner surface 2A of the operation unit side body 2.

  The operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and an input operation key 14 for inputting a telephone number and characters such as mail. And a determination operation key 15 as an operation member for performing determinations in various operations, scrolling in the vertical and horizontal directions, and a side key 16. Each key constituting the operation key group 11 is assigned a predetermined function according to the open / close state of the mobile phone 1, various modes, the type of the activated application, and the like (key assignment). Then, when each key is pressed by the user, an operation corresponding to the function assigned to each key at the time of pressing is executed in the mobile phone 1.

  The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  On one side surface of the operation unit side body 2, an interface (not shown) for communicating with an external device (for example, a host device) and an interface (not shown) for inserting and removing an external memory are provided. ) And are arranged. Each interface is covered with a cap when not in use. A side key 16 to which a predetermined function is assigned is disposed on the other side surface of the operation unit side body 2.

The display unit side body 3 has a display unit side inner surface 3A and a display unit side outer surface 3B. 3 A of display part side inner surfaces are surfaces arrange | positioned facing the operation part side inner surface 2A of the operation part side housing | casing 2 in the closed state of the mobile telephone 1. FIG.
The display unit side body 3 includes an outer surface (outer wall) including a front panel 3a, a front case 3b, and a rear case 3c.
In the display unit side body 3, a main display unit 21, a sub display unit 22, and a voice output unit 25 that outputs the voice of the other party of the call are arranged to be exposed to the outside.

  The main display unit 21 is disposed on the display unit side inner surface 3 </ b> A of the display unit side body 3. The main display unit 21 is configured to display various information such as character information and image information. The main display unit 21 is a display unit that is visually recognized by the user when the mobile phone 1 is in the open state.

  The sub display unit 22 is disposed on the display unit side outer surface 3B of the display unit side body 3. The sub display unit 22 is a display unit having a display area smaller than that of the main display unit 21. The sub display unit 22 is configured to display various information such as character information and image information. The sub display unit 22 is a display unit visually recognized by the user when the cellular phone 1 is closed.

  The audio output unit 25 is disposed on the display unit side inner surface 3 </ b> A of the display unit side body 3. The audio output unit 25 is disposed on the outer end side opposite to the connecting unit 4 side in the longitudinal direction of the display unit side body 3. That is, the audio output unit 25 is disposed on the other outer end side when the mobile phone 1 is in the open state.

  The connecting part 4 is configured to have an open / close hinge mechanism. The connecting portion 4 is disposed between the upper end portion of the operation unit side body 2 and the lower end portion of the display unit side body 3. The connection part 4 connects the operation part side housing | casing 2 and the display part side housing | casing 3 so that rotation is mutually possible. In detail, the connection part 4 connects the operation part side housing | casing 2 and the display part side housing | casing 3 so that rotation is possible centering | focusing on the rotation axis Z in a hinge mechanism.

  Next, basic members constituting the mobile phone 1 will be described with reference to FIGS. 2 and 3. FIG. 2 is an exploded perspective view for explaining members constituting the operation unit side body 2. FIG. 3 is an exploded perspective view for explaining members constituting the display unit side body 3.

  As shown in FIG. 2, the operation unit side body 2 includes a key structure 40, a side key structure 41, a front case 2a (first case member), a key substrate 50, a case body 60, a circuit, A substrate 70, an antenna unit 90, a waterproof packing 95, a rear case 2b (second case member), a battery 80, and a battery cover 2c are provided. The operation unit side body 2 includes a vibrator unit (not shown) that vibrates the operation unit side body 2 inside.

  The outer surface (outer wall) of the operation unit side body 2 is arranged such that the front case 2a and the rear case 2b face each other so that the inner surfaces of the concave shapes face each other. It is formed by attaching a battery cover 2c to the case 2b.

  The key structure 40 is disposed on the outer surface side of the front case 2a. The key board 50, the case body 60, the circuit board 70, the antenna unit 90, the waterproof packing 95, and the battery 80 are an internal space formed by the front case 2 a and the rear case 2 b (operation unit side housing). It is arranged (built in) inside the body 2. The side key structure portion 41 is disposed between the side wall 200 of the front case 2 a and the side wall 250 of the rear case 2 b disposed outside the side wall 200.

The front case 2a is formed with an opening 14a and a mounting portion 14c formed on the outer edge of the opening 14a.
The key structure portion 40 is placed on the placement portion 14c.
The opening portion 14a is formed so that the key structure portion 40 placed on the placement portion 14c and the key substrate 50 (first key substrate 50A) are in contact with each other in a stacked manner.

  The front case 2a is formed with an insertion hole 210 (first through hole) for the side key 16 (see FIG. 4). The insertion hole 210 is a through-hole through which an insertion portion 47 of the side key sheet 45 described later and a protrusion 300 of the side key member 16b described later are inserted.

The rear case 2 b is formed with a battery opening 81 and a notch 260 for the side key 16.
The battery opening 81 is an opening for attaching the battery 80.
The notch 260 is a notch for the side key 16, and is a notch for exposing the pressing surface 311 (see FIG. 4) of the side key member 16b to the outside. The notch 260 forms an insertion hole together with a part of the front case 2a. The pressing portion 310 (see FIG. 4) of the side key member 16b is inserted into the insertion hole so as to move in the pressing direction.

The key structure 40 is configured to include an operation member 40A and a key sheet 40C.
The operation member 40A is composed of a plurality of key operation members. Specifically, the operation member 40A includes a function setting operation key member 13b, an input operation key member 14b, and a determination operation key member 15b.
Each operation key member constituting the operation member 40A is bonded to a predetermined location on the key sheet 40C. The pressing surfaces of the operation key members bonded to the key sheet 40C are arranged so as to be exposed to the outside.

  The key sheet 40C is a flexible sheet-like member made of silicon rubber. A plurality of convex portions are formed on the key sheet 40C. The plurality of convex portions are formed at positions corresponding to key switches 51, 52, and 53, which will be described later.

Further, the side key structure portion 41 includes a side key member 16b (key member) and a side key sheet 45 (key sheet, rubber sheet). Moreover, the side key structure part 41 has a sponge member (elastic member) arrange | positioned between the side key member 16b and the side key sheet 45 (refer FIG. 4).
The side key structure 41 and each member constituting the side key structure 41 will be described in detail later.

The key board 50 includes a first key board 50A and a second key board 50B (key board).
The first key substrate 50A includes a plurality of key switches 51, 52, and 53 disposed on a first surface 50a that is a surface on the key sheet 40C side of the key structure portion 40.
Each of the plurality of key switches 51, 52, 53 is disposed at a position corresponding to each operation member 40A. The key switches 51, 52, 53 include a metal dome that is a three-dimensionally curved metal plate and a switch terminal (not shown). When the apex of the bowl-shaped shape is pressed, the metal dome comes into contact with a switch terminal formed on an electric circuit (not shown) printed on the surface of the first key substrate 50A so as to be electrically connected. Configured.

The second key board 50 </ b> B is a key board for the side key 16. The second key substrate 50B is formed to extend laterally (short direction) in the first key substrate 50A. The second key substrate 50B is arranged so that the connecting portion with the first key substrate 50A is bent and is substantially orthogonal to the first key substrate 50A.
The second key substrate 50B includes side key switches 55 and 55 (switch units) disposed on the side key sheet 45 side surface. The configuration of the side key switches 55 and 55 is the same as the configuration of the key switches 51, 52 and 53.

The case body 60 is a conductive member having a thin, substantially rectangular parallelepiped shape and a shape in which one wide surface is opened.
The case body 60 includes a flat plate portion 61 disposed to face the circuit board 70 and ribs 62 (wall portions) formed substantially perpendicular to the surface of the flat plate portion 61 on the circuit board 70 side. On the flat plate portion 61, the first key substrate 50A in the key substrate 50 is placed. The rib 62 is formed to be equal to or sufficiently higher than the height of the tallest electronic component among the various electronic components mounted on the circuit board 70. The ribs 62 are formed on the periphery and inside of the flat plate portion 61 so as to correspond to the reference potential pattern layer 75 constituting the reference potential portion.
The rib 62 has an extending portion 62a on which the side key sheet 45 is placed (surface contact, stacked arrangement).

The case body 60 functions as a shield case. The case body 60 suppresses external high frequency noise from acting on various electronic components disposed on the circuit board 70 and emits (propagates) from an RF (Radio Frequency) circuit, a CPU circuit, a power supply circuit, and the like. This prevents the generated noise from acting on other electronic components and a receiving circuit connected to the antenna.
The case body 60 may be formed of a metal, a skeleton of which is formed of a resin, and a conductor film formed on the surface thereof.

The circuit board 70 includes a flat board portion 71, electronic components and various circuit blocks mounted on the first surface 70a side of the substrate portion 71, and a reference potential formed on the surface of the first surface 70a of the board portion 71. Pattern layer 75 (ground pattern layer).
Examples of the electrons mounted on the substrate unit 71 include an electronic component including a signal processing unit that processes a signal transmitted and received by the antenna unit 90. Examples of the circuit block include an RF (Radio Frequency) circuit and a power supply circuit.
The reference potential pattern layer 75 is formed at the outer edge of the substrate unit 71 and at locations that partition each circuit block. The reference potential pattern layer 75 is formed, for example, by printing a conductive member on the surface of the first surface 70a of the circuit board 70.

  The antenna unit 90 is configured by arranging an antenna element having a predetermined shape on a base. The antenna unit 90 is disposed on the end side opposite to the connecting unit 4 side in the mobile phone 1. The antenna element of the antenna unit 90 is formed of a strip-shaped sheet metal. The antenna unit 90 is supplied with power from the circuit board 70 via a power supply terminal (not shown). As a result, the antenna element is fed from the circuit board 70 via the feed terminal and is connected to the RF module and the like of the circuit board 70.

  The waterproof packing 95 is disposed between the outer edge of the front case 2a and the outer edge of the rear case 2b. The waterproof packing 95 is annular and has a shape corresponding to the outer edges of the front case 2a and the rear case 2b. The waterproof packing 95 is made of an elastic material such as silicon rubber.

The battery 80 is accommodated in the operation unit side body 2 via the battery opening 81 formed in the rear case 2b.
The battery cover 2c is disposed so as to cover the battery 80 from the outer surface side of the rear case 2b.

  In addition to the above-described members, the operation unit side body 2 houses and arranges members such as a microphone constituting the voice input unit 12.

  As shown in FIG. 3, the display unit side body 3 includes a front panel 3a, a main display unit 21, a front case 3b, a display unit side substrate 86, a sub display unit 22, and a rear case 3c. .

  The outer surface (outer wall) of the display unit side body 3 is formed by joining the front case 3b and the rear case 3c so that their outer peripheral edges overlap each other, and attaching the front panel 3a to the front case 3b. The

  The front panel 3a is a flat light transmissive member. The front panel 3a is a member that protects the main display unit 21 and transmits the image displayed on the main display unit 21 to the outside.

The main display unit 21 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.
The main display unit 21 is disposed on the front panel 3a side in the front case 3b.

  The front case 3b is formed by resin insert molding a sheet metal member. The sheet metal member constituting the front case 3b improves the strength of the front case 3b and functions as a shield member.

The display unit side substrate 86 is a flat member, and is a member that is electrically connected to the main display unit 21, the sub display unit 22, and the like.
In the present embodiment, an opening 86 a is formed in the center of the display unit side substrate 86. The sub display unit 22 is (inserted) in the opening 86a.

The sub display unit 22 is stacked on the rear case 3c side of the front case 3b.
The sub display unit 22 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.
The sub display unit 22 is a display unit whose display area is smaller than the display area of the main display unit 21.
In the thickness direction of the display unit side body 3, the sub display unit 22 is arranged such that the display region faces away from the display region of the main display unit 21.

The rear case 3c accommodates the display unit side substrate 86 and the sub display unit 22 together with the front case 3b.
In addition to the members described above, members such as the voice input unit 12 are accommodated in the operation unit side body 2.

Next, the structure of the side key 16 will be described with reference to FIG. 4 is a cross-sectional view taken along the line AA in FIG.
As shown in FIG. 4, in the internal space 500 inside the front case 2 a, an extending portion 62 a that constitutes the rib 62 of the case body 60 and a second key substrate 50 </ b> B that constitutes the key substrate 50 are accommodated and arranged. Is done. In other words, the extension part 62a that constitutes the rib 62 of the case body 60 and the second key board 50B that constitutes the key board 50 are disposed inside the side wall 200 of the front case 2a.

  Further, in the hollow space 510 formed between the front case 2a and the rear case 2b, the side key sheet 45, the side key member 16b (part), and the sponge member 400 are accommodated. In other words, the side key sheet 45, the side key member 16b (part), and the sponge member 400 are disposed between the side wall 200 of the front case 2a and the side wall 250 of the rear case 2b.

  In addition, a part of the pressing portion 310 including the pressing surface 311 of the side key member 16b is disposed in the external space 520 that is outside the rear case 2b. In other words, the pressing surface 311 of the side key member 16b is disposed outside the rear case 2b.

As shown in FIG. 4, the extending portion 62 a is disposed inside the side wall 200 in the front case 2 a so as to face the inner surface of the side wall 200.
The extension part 62a has a mounting part 62b formed on the side wall 200 side.
The second key substrate 50B is placed on the placement portion 62b.

  As shown in FIG. 4, the second key substrate 50B is placed on the placement portion 62b formed in the extending portion 62a. The second key substrate 50B is placed on the placement portion 62b so that the side key switch 55 faces the side wall 200 side. Specifically, the second key substrate 50 </ b> B is disposed on the mounting portion 62 b so that the side key switch 55 faces the insertion hole 210 formed in the side wall 200.

As shown in FIG. 4, the side key sheet 45 includes a flat portion 46 and an insertion portion 47.
The flat portion 46 is a flat portion disposed between the side wall 200 of the front case 2a and the side key member 16b.
The flat portion 46 is bonded to the side wall 200 with a predetermined adhesive (member).
The flat portion 46 is disposed away from a side key member 16b (pressing portion 310) described later.
A sponge member 400 is disposed between the flat portion 46 and the side key member 16b (pressing portion 310).

The insertion portion 47 is formed to protrude toward the side key switch 55 side. The insertion portion 47 is inserted and disposed in the insertion hole 210 formed in the side wall 200.
The insertion portion 47 has a cylindrical hollow portion 47a formed on the side key member 16b side. The protruding portion 300 of the side key member 16b is inserted and disposed in the hollow portion 47a.
That is, the insertion portion 47 is inserted and disposed in the insertion hole 210 in a state where the distal end portion is disposed between the side key switch 55 and the protruding portion 300.

A part of the side key member 16b is disposed between the side wall 200 of the front case 2a and the side wall 250 of the rear case 2b, and is held movably in the direction of arrow D.
The side key member 16 b includes a protruding portion 300, a pressing portion 310, and a retaining portion 320.

The protrusion 300 is formed to protrude to the side key switch 55 side. The protrusion 300 is formed to protrude from the inner surface 312 on the inner surface 312 side of the pressing portion 310.
The protrusion 300 is inserted and disposed in the insertion hole 210 formed in the side wall 200. Specifically, the protrusion 300 is inserted and arranged in the hollow portion 47 a formed in the insertion portion 47 of the side key sheet 45 inserted and arranged in the insertion hole 210. The protruding portion 300 is disposed so that the tip portion faces the side key switch 55 with the insertion portion 47 of the side key sheet 45 interposed therebetween.
The protrusion 300 is a part that presses (presses) the side key switch 55 via the insertion part 47 of the side key sheet 45.

  Here, the protruding portion 300 is arranged such that the tip portion is separated from the side key sheet 45 (the bottom surface of the hollow portion 47a). Specifically, in a state where the pressing surface 311 of the side key member 16b is not pressed from the outside, the protruding portion 300 is disposed away from the side key sheet 45 (the bottom surface of the hollow portion 47a). That is, the protruding portion 300 is arranged such that the tip thereof is separated from the side key sheet 45 (the bottom surface of the hollow portion 47a) by the side key member 16b being urged toward the external space 520 by a sponge member 400 described later. .

The pressing portion 310 is disposed on the external space 520 side in the protruding portion 300.
The pressing part 310 is disposed through the notch 260 formed in the side wall 250 of the rear case 2b. The pressing part 310 is partly inserted into the notch part 260 and partly exposed to the external space 520.
Further, when the side key member 16 b is moved toward the internal space 500, the pressing portion 310 moves so that a part thereof is disposed in the hollow space 510.

  The pressing part 310 has a pressing surface 311. The pressing surface 311 is a portion pressed by the user. The pressing surface 311 is a surface disposed in the external space 520. The pressing surface 311 is always exposed and arranged in the external space 520 through the notch portion 260.

As will be described later, a concave portion 315 is formed on the inner surface 312 side of the pressing portion 310. In the recess 315, the sponge member 400 compressed to have an elastic force is disposed.
In addition, an inner surface 312 of the pressing portion 310 opposite to the pressing surface 311 is disposed away from the flat portion 46 of the side key sheet 45. Specifically, in a state where the pressing surface 311 of the side key member 16b is not pressed from the outside, the inner surface 312 of the pressing portion 310 is disposed away from the side key sheet 45 (the surface of the flat portion 46). That is, the inner surface 312 of the pressing portion 310 is disposed away from the side key sheet 45 (the surface of the flat portion 46) by the side key member 16b being urged toward the external space 520 by a sponge member 400 described later. The This separated distance is equal to (or less than) the stroke length of the side key member 16b.

The retaining portion 320 is formed on the outer edge of the pressing portion 310. The retaining portion 320 is formed on the inner surface 312 side of the pressing portion 310. The retaining portion 320 is formed in a flange shape on the outer edge of the pressing portion 310. The retaining portion 320 is disposed on the side key seat 45 side with respect to the side wall 250 in the rear case 2b.
The retaining part 320 has a diameter larger than the diameter of the notch part 260.
The retaining portion 320 is a member that contacts the side wall 250 of the rear case 2b and prevents the side key member 16b from slipping out into the external space 520.

  Further, the retaining portion 320 is disposed in contact with the side wall 250 of the rear case 2b. In a state where the pressing surface 311 of the side key member 16b is not pressed from the outside, the retaining portion 320 is disposed in contact with the side wall 250 of the rear case 2b. In other words, the retaining portion 320 is disposed in contact with the side wall 250 of the rear case 2b when the side key member 16b is urged toward the external space 520 by a sponge member 400 described later.

The recess 315 is formed on the inner surface 312 side of the side key member 16b. The recess 315 is a portion that is recessed from the inner surface 312 to the pressing surface 311 side.
The recess 315 is a part in which a part of the sponge member 400 is accommodated.
The depth of the recess 315 is adjusted by the material and thickness of the sponge member 400 and the strength of the key pressing force that is set.

The sponge member 400 is disposed between the flat portion 46 of the side key sheet 45 and the side key member 16b with an elastic force.
The sponge member 400 is disposed between the flat portion 46 and the inner surface 312 of the side key member 16b. Specifically, a part of the sponge member 400 is accommodated and disposed in the recess 315 and is disposed between the bottom surface of the recess 315 and the surface of the flat portion 46.
The sponge member 400 is compressed (based on the size of the natural state) by the bottom surface of the recess 315 and the surface of the flat portion 46, and is disposed in a state having elasticity.

The sponge member 400 arranged with an elastic force urges the side key member 16b toward the external space 520 side. Specifically, the sponge member 400 disposed with elasticity urges the side key member 16b so that the retaining portion 320 is in contact with the inner surface of the side wall 250 of the rear case 2b.
As a result, the side key member 16b is disposed in a state where the retaining portion 320 contacts the inner surface of the side wall 250 of the rear case 2b and the protruding portion 300 is separated from the side key sheet 45 (the bottom surface of the hollow portion 47a). .

  Next, the operation of the mobile phone 1 will be described with reference to FIGS. FIG. 5 is a cross-sectional view for explaining the operation of the mobile phone 1. FIG. 6 is a cross-sectional view illustrating the operation of the mobile phone 1.

  As shown in FIG. 4, in a normal state (a state in which the pressing surface 311 of the side key member 16 b is not pressed from the outside), the side key member 16 b has the retaining portion 320 formed by the elastic force of the sponge member 400. While being in contact with the inner surface of the side wall 250 of 2b, the protruding portion 300 is disposed in a state of being separated from the side key sheet 45 (the bottom surface of the hollow portion 47a).

  In this normal state, when vibration is generated in the operation unit side body 2 by a vibrator unit (not shown) arranged inside the operation unit side body 2, the retaining portion 320 is provided on the side wall 250 of the rear case 2b. Since it is in contact with the inner surface, no chatter noise is generated.

  Here, since the protrusion 300 is separated from the side key sheet 45 (the bottom surface of the hollow portion 47a), the side key 16b is caused to be a side key switch 55 due to a dimensional error caused in manufacturing or the like (in a normal state). The occurrence of the problem of pressing down can be suppressed.

  Further, the side key member 16b is urged by the elastic force of the sponge member 400 so that the retaining portion 320 abuts against the inner surface of the side wall 250 of the rear case 2b. The separation from the side wall 250 of the case 2b is suppressed. That is, the cellular phone 1 can suppress chatter noise even when a manufacturing error occurs.

Next, as shown in FIG. 5, the user presses (presses) the pressing surface 311 of the side key member 16b in the direction of the arrow F1.
The side key member 16b that presses (presses) the pressing surface 311 in the direction of the arrow F1 is moved in the direction of the arrow D1. The side key member 16b is moved in the arrow D1 direction while compressing the sponge member 400.

And the protrusion part 300 in the side key member 16b contacts the bottom face (side key sheet 45) of the hollow part 47a, and pushes down the part of a bottom face.
Thereby, the projection part 300 presses (presses down) the side key switch 55 via the part corresponding to the bottom face in the hollow part 47a in the side key sheet 45.

Here, the strength of the pressing force required to move the side key member 16b in the direction of the arrow D1 is the same as the strength of the elastic force generated by the sponge member 400.
The sponge member 400 is disposed between the side key member 16b and the side key sheet 45 in a state where a part of the sponge member 400 is accommodated in the recess 315 formed in the side key member 16b.
If the side key member 16b in which the concave portion 315 is not formed is used, when the side key member 16b is pressed down to a position where the side key member 16b comes into contact with the side key sheet 45, the sponge member 400 is brought into a compression limit or a state close to the compression limit. Thus, in order to press the side key switch 55, a very strong pressing force may be required.
In this embodiment, the side key member 16b is formed with the recess 315 in which a part of the sponge is accommodated, so that the pressing force is elastic when the height of the sponge member 400 reaches the depth of the recess 315. Power is the upper limit. Therefore, the mobile phone 1 can suppress an excessive increase in the pressing force of the side key member 16b.

Subsequently, as shown in FIG. 6, the user releases the pressing on the side key member 16 b (for example, the finger that has been pressed is released from the pressing surface 311). The released side key member 16b is moved in the arrow D2 direction by the elastic force of the sponge member 400. Then, the side key member 16b returns to the initial state.
That is, in the side key member 16b, the retaining portion 320 abuts on the inner surface of the side wall 250 of the rear case 2b by the elastic force of the sponge member 400, and the protruding portion 300 extends from the side key sheet 45 (the bottom surface of the hollow portion 47a). The position that is in a separated state also returns.
Thereby, even when the pressing by the user is released, the side key member 16b automatically returns to the initial state, so that the occurrence of chatter noise and the like is constantly and suitably suppressed.

  According to the present embodiment, since the retaining portion 320 is configured to always contact the inner surface of the side wall 250 of the rear case 2b by the elastic force of the sponge member 400, the mobile phone 1 is generated by the vibrator portion or the like. Generation of chatter noise (billing noise) due to vibration can be suppressed.

  In addition, according to the present embodiment, in the mobile phone 1, even when a dimensional error occurs in the constituent members or the like, the retaining portion 320 is always on the inner surface of the side wall 250 of the rear case 2 b by the elastic force of the sponge member 400. Since it is comprised so that it may contact | abut, generation | occurrence | production of a chatter sound can be suppressed suitably.

  In addition, according to the present embodiment, since the protruding portion 300 is arranged in a state of being separated from the side key sheet 45 (the bottom surface of the hollow portion 47a), the mobile phone 1 is used when a dimensional error of a component member or the like occurs. Unintentional pressing of the generated key switch can be suppressed.

  Further, according to the present embodiment, as described above, the occurrence of a problem caused by a dimensional error is suppressed, so that the dimensional tolerance can be increased in the design and manufacture of the mobile phone 1 as compared with the related art. Thereby, the freedom degree of design improves. This also reduces the burden on manufacturing.

Further, according to the present embodiment, since the concave portion 315 in which a part of the sponge is accommodated is formed in the side key member 16b, the pressing force is such that the height of the sponge member 400 becomes the depth of the concave portion 315. The upper limit is the elastic force. Thereby, the mobile phone 1 can suppress an excessive increase in the pressing force of the side key member 16b.
Moreover, according to this embodiment, it is suppressed that the recessed part 315 enlarges compared with the case (contributes to size reduction).

  As mentioned above, although preferred embodiment was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above. For example, in the present embodiment, the mobile phone 1 is described as a mobile electronic device. However, the mobile phone 1 is not limited to this, and the mobile electronic device may be a PHS (registered trademark), a personal handy phone system (PDA), a personal digital assistant (PDA), It may be a portable navigation device, a notebook computer, or the like.

  Further, in the present embodiment, the mobile phone 1 that can be folded by the connecting portion 4 is described. However, it is not such a foldable type, and the operation unit side body 2 and the display unit side body 3 are overlapped. One of the cases is slid in one direction from the closed state, and one case is rotated around an axis along the overlapping direction of the operation unit side case 2 and the display unit side case 3 A rotation (turn) type, or a type (straight type) in which the operation unit side body 2 and the display unit side body 3 are arranged in one housing and do not have a connecting portion may be used. The mobile phone 1 may be a so-called biaxial hinge type that can be opened and closed and rotated.

Moreover, although the side key has been described in the present embodiment, the present invention is not limited to this.
Moreover, in this embodiment, the press part in a side key member is penetrated by the notch part 260 formed in the rear case 2b. Here, the pressing part in the side key member is inserted through the through hole formed in the rear case 2b, not limited to the notch part.

  In the present embodiment, the protruding portion 300 of the side key member 16b is separated from the side key sheet 45 (the bottom surface of the hollow portion 47a), but is not limited to this, and is in contact (within a range not excessive). May be.

  Moreover, in this embodiment, although the sponge member is demonstrated as an elastic member, an elastic member is not limited to this. As the elastic member, for example, natural rubber, synthetic rubber, urethane rubber, silicon rubber, fluorine rubber, urethane rubber, various spring members, or the like may be used.

In the present embodiment, the mobile phone 1 includes the side key sheet 45, but the present invention is not limited thereto, and the side key sheet 45 may not be included.
That is, the mobile phone 1 (mobile electronic device) is mounted on the first case member in which the first through hole is formed, the key board accommodated in the first case member, and the penetrating hole. A switch portion disposed opposite to the hole, a second case member disposed outside the first case member and having a second through hole or notch, the first case member, and the second case member. A pressing portion disposed between the case member and inserted into the first through hole; a pressing portion having a pressing surface exposed to the outside through the second through hole or notch; and the pressing portion. A key member formed on the outer edge of the second case member and capable of coming into contact with the inner surface of the second case member, and disposed in a state having an elastic force between the first case member and the key member. The retaining portion is the second case. An elastic member biases toward an inner surface of said key member so as to be contact with the inner surface of the second case member in the timber, may be configured to include a.

DESCRIPTION OF SYMBOLS 1 Mobile phone 2 Operation part side housing | casing 2a Front case 2b Rear case 3 Display part side housing | casing 4 Connection part 16b Side key member 45 Side key sheet 46 Plane part 47 Insertion part 47a Hollow part 50A 1st key board | substrate 50B 2nd key Substrate 55 Side key switch 60 Case body 62 Rib 62a Extension part 200 Side wall 210 Insertion hole 250 Side wall 260 Notch part 300 Projection part 310 Press part 311 Press surface 312 Inner surface 315 Concave part 320 Retaining part 400 Sponge member

Claims (5)

A first case member formed with a first through hole;
A key board accommodated in the first case member;
A switch unit mounted on the key substrate and disposed to face the first through hole;
A second case member disposed outside the first case member and having a second through-hole or notch formed;
Arranged between the first case member and the second case member;
A protrusion inserted into the first through hole;
A pressing portion having a pressing surface exposed to the outside through the second through hole or the notch, and
A key member formed on an outer edge of the pressing portion and having a retaining portion capable of contacting the inner surface of the second case member;
A planar planar portion disposed between the first case member and the key member; and an insertion portion disposed between the switch portion and the protruding portion and inserted into the first through hole. A key sheet having
The key member is disposed between the flat surface portion and the key member of the key sheet in a state having elasticity, and the key member is disposed so that the retaining portion is in contact with the inner surface of the second case member. A portable electronic device comprising: an elastic member that biases toward the inner surface of the second case member. The portable electronic device according to claim 1, wherein a surface of the pressing portion opposite to the pressing surface is disposed apart from the flat portion of the key sheet. The key member has a recess formed on the inner surface side,
The portable electronic device according to claim 1, wherein a part of the elastic member is accommodated in the recess. In a state where the pressing surface of the key member is not pressed from the outside,
The portable electronic device according to any one of claims 1 to 3, wherein the protrusion is disposed apart from the key sheet. A first case member formed with a first through hole;
A key board accommodated in the first case member;
A switch unit mounted on the key substrate and disposed to face the first through hole;
A second case member disposed outside the first case member and having a second through-hole or notch formed;
Arranged between the first case member and the second case member;
A protrusion inserted into the first through hole;
A pressing portion having a pressing surface exposed to the outside through the second through hole or the notch, and
A key member formed on an outer edge of the pressing portion and having a retaining portion capable of contacting the inner surface of the second case member;
The key member is disposed between the first case member and the key member with an elastic force, and the key member is moved to the second case member so as to be in contact with the inner surface of the second case member. A portable electronic device comprising: an elastic member biasing toward an inner surface of the case member.

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