JP2007087794A - Compact electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide compact electronic equipment capable of applying a countermeasure against static electricity of an operation button without necessity of masking treatment of the operation button and without adding unnecessary interior parts. <P>SOLUTION: The compact electronic equipment is equipped with a case body 1 composed by mutually joining three cabinets 2, 3, 4, and one part of the intermediate cabinet 4 is exposed on a side face of the case body 1. Inside the case body 1, a circuit board 5 in which three momentary switches 51 to 53 are mounted is arranged and equipped, three operation buttons 61, 71, 72 to push the respective momentary switches 51 to 53 according to user operation are exposed on a surface of the case body 1, and plating treatment is applied to the respective operation buttons 61, 71, 72. A flat plate part 41 interposed between the three operation buttons 61, 71, 72 and the circuit board 5 is formed in the intermediate cabinet 4, the respective operation buttons 61 71, 72 are pinched between the flat plate part 41 and the inner face of a front face cabinet 2, and three small ports through which pushing parts 62, 73, 74 of the respective operation buttons 61, 71, 72 to push the respective momentary switches 51 to 53 are penetrated are opened and installed in the flat plate part 41. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a small electronic device such as an IC recorder.

As shown in FIG. 7, the conventional IC recorder includes a casing (1) having an opening (15) and an operation button (81) exposed from the opening (15). By the operation button (81), Operations such as voice recording, playback of recorded voice, recording, and playback stop are possible (see Patent Document 1).
A circuit board (5) is disposed inside the casing (1), and a tact switch (91) is provided on the circuit board (5) so as to face the back of the operation button (81). ing. The operation button (81) has a thin portion (83) that can be elastically deformed toward the inside of the housing (1) and a pressing portion (82) that presses the sensitive portion (92) of the tact switch (91). And it is fastened to the back surface of the housing (1) by a screw (84) that penetrates the thin wall portion (83).

When the operation button (81) is pressed, the thin portion (83) is elastically deformed toward the inside of the housing (1), whereby the pressing portion (82) is moved to the sensitive portion (92 of the tact switch (91). ) Is pushed into the body of the tact switch (91) to turn on the tact switch (91). In response to this, various processes such as audio recording and reproduction are executed.
In addition, in the conventional IC recorder, in order to improve the aesthetic appearance, it is known that the surface of the operation button (81) is plated to give a glossy feeling like a metal surface.
JP 2005-26133 A [H01 15/16]

By the way, in the IC recorder in which the surface of the operation button (81) is plated, when the operation button (81) is operated, static electricity charged on the human body moves to the plating layer on the surface of the operation button (81), Thereafter, when the operation button (81) approaches the circuit board (5) along with the push operation of the operation button (81), static electricity is discharged from the plating layer of the operation button (81) to the circuit board (5). As a result, there has been a problem of causing a failure of the circuit board (5).
Therefore, in the above-described IC recorder, a method of performing the plating process only on the portion exposed from the casing (1) by masking a portion that does not require the plating process when performing the plating process on the operation button (81). (First method) or a method (second method) in which a dedicated discharge member (for example, a metal leaf spring member) connected to the ground is connected to the surface of the operation button (81). Measures were taken.

However, since the first method requires a masking process on the operation button (81), the plating process becomes complicated. In the second method, a dedicated member for discharging is required. As a result, the cost was increased.
Accordingly, an object of the present invention is to provide a small electronic device that does not require masking processing of an operation button and can take measures against static electricity of the operation button without adding extra parts.

A small electronic device according to the present invention includes a housing (1) having an opening, an operation button exposed from the opening, a circuit board (5) disposed in the housing (1), and the circuit board. (5) A switch having a sensitive part mounted on the operation button and sensitive to the operation of the operation button is provided. The housing (1) includes a front cabinet (2), a rear cabinet (3), and both cabinets ( 2) The intermediate cabinet (4) interposed between (3) is joined to each other, and the surface of the operation button is plated.
The intermediate cabinet (4) is made of an electrically insulating material, and has a flat plate portion (41) interposed between the back surface of the operation button and the circuit board (5). The flat plate portion (41) Has a small opening through which the sensitive part of the switch or the action part of the operation button that contacts the sensitive part penetrates.

  Specifically, the operation button can be pushed in the direction in which the operation button is pushed into the housing (1), and a pressing portion that presses the sensitive portion of the switch is provided on the back surface of the operational button. The pressing portion penetrates the small edge of the intermediate cabinet (4).

In the above-described small electronic device according to the present invention, any one of the sensitive part of the switch and the action part of the operation button facing the sensitive part is provided with a small opening provided in the flat plate part (41) of the intermediate cabinet (4). It penetrates and touches the other.
Further, between the operation button and the circuit board (5), the flat plate portion (41) of the intermediate cabinet (4) formed of an electrically insulating material is formed over the entire opposing area except for the opening area of the small edge. ) Is interposed, the area of the region where the operation button and the circuit board (5) directly face each other is slightly smaller than that of the conventional case, so that the circuit board (from the plating layer on the surface of the operation button) 5) Static electricity discharge to 5) can be suppressed. Therefore, the masking process when plating the surface of the operation button is not necessary.
Furthermore, since the flat plate portion (41) is formed in the intermediate cabinet (4) which is an essential component constituting a part of the housing (1), it is possible to add a dedicated component without adding a dedicated component as in the prior art. Countermeasures against static electricity on the operation buttons can be taken.

In a specific configuration, the front cabinet (2), the back cabinet (3), and the intermediate cabinet (4) are each composed of an integrally molded product made of synthetic resin, and the intermediate cabinet (4) is composed of the front cabinet (2) and the rear cabinet. It is colored in a color different from the color of the cabinet (3).
According to the specific configuration, the housing (1) having the outer surface of two colors or three colors can be configured, and thereby the aesthetic appearance can be improved.

Further, in a specific configuration, the opening is opened in one of the front cabinet (2) and the back cabinet (3), and the operation button is a flat plate of the one cabinet and the intermediate cabinet (4). The operation button is held between the flat plate portion (41) of the intermediate cabinet (4) and the operation button, and the inner surface of the one cabinet and the operation button. A positioning structure is provided for positioning at a predetermined position.
According to the specific configuration, since the operation button is sandwiched between the flat plate portion (41) of the intermediate cabinet (4) and the inner surface of the one cabinet, the operation button is fixed with a screw or the like. Compared to the prior art, the space required in the housing (1) for fixing the operation buttons can be reduced. Further, the operation button is positioned at a predetermined position in the casing (1) by the positioning structure while being sandwiched between the flat plate portion (41) of the intermediate cabinet (4) and the inner surface of the one cabinet. Will be.

  According to the small electronic device of the present invention, it is not necessary to mask the operation button, and it is possible to take countermeasures against static electricity on the operation button without adding extra parts.

Hereinafter, embodiments of the present invention implemented in an IC recorder will be specifically described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, the IC recorder of the present invention includes a casing (1) having a flat shape and three operation buttons (61), (71) exposed on the surface of the casing (1). 72), a liquid crystal display (13) is provided in the housing (1), and a microphone terminal (11) and a headphone terminal (12) are provided at the tip of the housing (1). Has been deployed.
Each of the three operation buttons (61), (71), (72) can be pushed into the casing (1) in the direction to be pushed into the casing (1). Recording, playback of sound recorded by the push operation of the second operation button (71), and stop of recording or stop of playback by the push operation of the third operation button (72) can be performed.

  The housing (1) is configured by joining a front cabinet (2), a back cabinet (3), and an intermediate cabinet (4) interposed between the two cabinets. The front cabinet (2), the back cabinet (3), and the intermediate cabinet (4) are each composed of an integrally molded product made of synthetic resin, and the front cabinet (2) and the rear cabinet (3) are colored in the same color, The cabinet (4) is colored in a color different from the colors of the front and back cabinets (2) and (3). A part of the outer surface of the intermediate cabinet (4) is exposed on both side surfaces of the housing (1), thereby forming the housing (1) having a two-tone color outer surface.

As shown in FIG. 3, the rear cabinet (3) is provided with a recessed battery housing portion (32) for housing a battery serving as a power source. As shown in FIG. 3, a lid member (31) is detachably attached.
As shown in FIG. 3, notches (24) and (24) are recessed on both sides of the front cabinet (2), and the notches (24) and (24) are connected to the intermediate cabinet (4). Both sides will be exposed.

A circuit board (5) is provided between the rear cabinet (3) and the intermediate cabinet (4), and three tact switches (51), (52) are provided on the circuit board (5) as shown in FIG. ) (53) and a liquid crystal display (13) are mounted, and the three tact switches (51), (52), (53) are provided with sensitive portions (51a), (52a), (53a), respectively.
As shown in FIG. 3, the three tact switches (51), (52) and (53) are mounted at positions facing the three operation buttons (61), (71) and (72), respectively. (61) (71) (72) When the sensitive parts (51a) (52a) (53a) are pushed into the tactile switches (51) (52) (53) to a certain position, The switches (51), (52) and (53) are sensitive to the push operation.

Of the three operation buttons (61), (71) and (72), the first operation button (61) is formed on the first operation member (6), and the second and third operation buttons (71). (72) is formed on the second operating member (7). Each of the first and second operating members (6) and (7) is formed by applying a plating treatment to the surface of an integrally molded product made of synthetic resin, whereby both the operating members (6) and (7) have a metal surface. The glossy feeling is given.
The intermediate cabinet (4) is formed with a flat plate portion (41) interposed between the operation members (6) and (7) and the circuit board (5), and both operation members (6) and (7) The intermediate cabinet (4) is fixed in a state of being sandwiched between the flat plate portion (41) and the inner surface of the front cabinet (2).

  FIG. 4 shows a state in which the rear cabinet (3) and the circuit board (5) are removed from the IC recorder of the present invention. FIG. 5 shows the periphery of the flat plate portion (41) of the intermediate cabinet (4) in FIG. It is shown enlarged.

As shown in FIG. 5, the first operation member (6) is sandwiched between the first operation button (61), the flat plate portion (41) of the intermediate cabinet (4), and the inner surface of the front cabinet (2). A first fixing portion (64), and first connecting portions (65) and (65) for connecting the first fixing portion (64) and the first operation button (61). A first pressing portion (62) for pressing the sensitive portion (51a) of the first tact switch (51) shown in FIG. The flat plate portion (41) of 4) has a first fore edge (43) through which the first pressing portion (62) passes. As shown in FIG. 3, the front cabinet (2) is provided with a first opening (21), and the first operation button (61) is exposed from the first opening (21). .
In response to the push operation of the first operation button (61), the first connecting portions (65) and (65) shown in FIG. 5 are elastically deformed toward the inside of the housing (1), thereby the first pressing portion. (62) presses the sensitive part (51a) of the first tact switch (51), and the first tact switch (51) is sensitive to the push operation.

  As shown in FIG. 5, the second operation member (7) includes second and third operation buttons (71) and (72), a flat plate portion (41) of the intermediate cabinet (4), and the inner surface of the front cabinet (2). A second fixing portion (76) sandwiched between the second fixing portion (76) and a second connecting portion (77a) (77a) connecting the second fixing portion (76) and the second operation button (71); A third connecting portion (77b) (77b) for connecting the second fixing portion (76) and the third operation button (72) is provided. A second pressing portion (74) for pressing the sensitive portion (52a) of the second tact switch (52) shown in FIG. A third pressing portion (73) for pressing the sensitive portion (53a) of the third tact switch (53) shown in FIG. 6 protrudes from the back surface of the operation button (72).

  The flat plate portion (41) of the intermediate cabinet (4) is provided with a second fore edge (44) and a third fore edge (45) through which the second pressing portion (74) and the third pressing portion (73) penetrate, respectively. In addition, as shown in FIG. 3, the front cabinet (2) is provided with a second opening (22) and a third opening (23), and a second operation button ( 71) and the third operation button (72) are exposed.

As shown in FIG. 5, in response to the push operation of the second operation button (72), the second connecting portions (77a) and (77a) are elastically deformed toward the inside of the housing (1), whereby the second connection portion (77a) (77a) is elastically deformed. The pressing portion (74) presses the sensitive portion (52a) of the second tact switch (52), and the second tact switch (52) is sensitive to the push operation.
Similarly, in response to the push operation of the third operation button (73), the third connecting portions (77b) (77b) are elastically deformed toward the inside of the housing (1), and thereby the third pressing portion ( 73) presses the sensitive portion (53a) of the third tact switch (53), and the third tact switch (53) is sensitive to the push operation.

  Further, as shown in FIG. 3, the flat plate portion (41) of the intermediate cabinet (4) has an electrode mounting portion (42) protruding toward one end of the battery housing portion (32) of the rear cabinet (3). ing. An electrode plate (not shown) that comes into contact with one electrode of the battery housed in the battery housing section (32) is attached to the electrode mounting section (42).

As shown in FIG. 5, a first positioning pin (63) projects from the first fixing portion (65) of the first operating member (6) toward the flat plate portion (41) of the intermediate cabinet (4). In addition, a first positioning hole (46) into which the first positioning pin (63) is fitted is formed in the flat plate portion (41) of the intermediate cabinet (4).
Further, as shown in FIG. 3, the first fixing member (65) of the first operating member (6) is provided with a second positioning pin (not shown) protruding toward the inner surface of the front cabinet (2). The second positioning hole (25) into which the second positioning pin is fitted is formed in the inner surface of the front cabinet (2).
As a result, the first operating member (6) is sandwiched between the flat plate portion (41) of the intermediate cabinet (4) and the inner surface of the front cabinet (2), and the predetermined operation is performed in the housing (1). Will be fixed in position.

Further, as shown in FIG. 5, the third fixing pin (75) of the second operating member (7) has three third positioning pins (75) facing the flat plate portion (41) of the intermediate cabinet (4). ˜ (75) are projected, and three third locating holes in which three third locating pins (75) ˜ (75) are respectively fitted in the flat plate portion (41) of the intermediate cabinet (4). (47) to (47) are established.
Further, as shown in FIG. 3, the first fixing portion (76) of the second operating member (7) is provided with a fourth positioning pin (not shown) protruding toward the inner surface of the front cabinet (2). On the inner surface of the front cabinet (2), a fourth positioning hole (26) is formed in which the fourth positioning pin is fitted.
As a result, the second operating member (7) is held between the flat plate portion (41) of the intermediate cabinet (4) and the inner surface of the front cabinet (2) in a predetermined state in the casing (1). Will be fixed in position.

  According to the IC recorder of the present invention, the first and second operation members (6), (7), on which the three operation buttons (61), (71), (72) are formed, and the circuit board (5) are provided. Is the opposing area between the operating members (6) (7) and the circuit board (5) except for the opening areas of the first to third foreheads (43) (44) (45) established in the flat plate part (41). Since the flat plate portion (41) of the intermediate cabinet (4) is interposed throughout, the first and second operation members (6) (7) and the circuit board (5) are directly opposed to each other. The area becomes slightly smaller than that of the prior art, and it is thereby possible to suppress discharge of static electricity from the plating layers on the surfaces of the operating members (6) and (7) to the circuit board (5). Therefore, the masking process for plating the surfaces of both operation members (6) and (7) becomes unnecessary.

Further, since the flat plate portion (41) is formed in the intermediate cabinet (4) which is an essential component constituting a part of the housing (1), each plate portion (41) can be provided without adding dedicated components as in the prior art. It is possible to take countermeasures against static electricity on the operation buttons (61) (71) (72).
Furthermore, since both operation members (6) and (7) are sandwiched between the flat plate portion (41) of the intermediate cabinet (4) and the inner surface of the front cabinet (2), the operation buttons are fixed with screws or the like. Compared to the conventional case, the space required in the housing (1) for fixing the operation button can be reduced.

It is the perspective view which looked at the IC recorder concerning the present invention from the surface side. It is the perspective view which looked at this IC recorder from the back side. It is a disassembled perspective view of this IC recorder. It is a top view which shows the state which removed the back cabinet and the circuit board from this IC recorder. It is a top view which expands and shows the principal part of FIG. It is a top view of a circuit board. It is sectional drawing which expands and shows the principal part of the conventional IC recorder.

Explanation of symbols

(1) Case
(2) Front cabinet
(3) Rear cabinet
(4) Intermediate cabinet
(41) Flat plate
(43) First forehead
(44) Second forehead
(45) 3rd forehead
(5) Circuit board
(51) First tact switch
(52) Second tact switch
(53) 3rd tact switch
(51a)-(53a) Sensitive part
(6) First operation member
(61) First operation button
(62) First pressing part
(7) Second operation member
(71) Second operation button
(72) Third operation button
(73) Second pressing part
(74) Third pressing part

Claims (4)

A housing (1) having an opening, an operation button exposed from the opening, a circuit board (5) disposed in the housing (1), and the circuit board (5) attached to the circuit board (5) A switch having a sensitive part that is sensitive to the operation of the operation buttons, and the housing (1) is interposed between the front cabinet (2), the rear cabinet (3), and both cabinets (2) (3). In a small electronic device that is formed by joining the intermediate cabinet (4) to each other and the surface of the operation button is plated.
The intermediate cabinet (4) is made of an electrically insulating material, and has a flat plate portion (41) interposed between the back surface of the operation button and the circuit board (5). The flat plate portion (41) The small electronic device is characterized in that a small opening through which the sensitive part of the switch or the action part of the operation button contacting the sensitive part passes is established.   The operation button can be pushed in a direction to be pushed into the housing (1), and a pressing portion that presses the sensitive portion of the switch projects toward the sensitive portion on the back of the operational button. The small electronic device according to claim 1, wherein the small electronic device is provided, and the pressing portion passes through a small edge of the intermediate cabinet (4).   The front cabinet (2), the back cabinet (3), and the intermediate cabinet (4) are each composed of an integrally molded product made of synthetic resin, and the intermediate cabinet (4) is composed of the front cabinet (2) and the rear cabinet (3). The small electronic device according to claim 1 or 2, which is colored in a color different from the color.   The opening is opened in one of the front cabinet (2) and the rear cabinet (3), and the operation button is located between the one cabinet and the flat plate portion (41) of the intermediate cabinet (4). In order to position the operation button at a predetermined position on the opposed portion of the intermediate cabinet (4) between the flat plate portion (41) and the operation button, and the inner surface of the one cabinet and the opposed portion of the operation button. The small electronic device according to any one of claims 1 to 3, wherein the positioning structure is provided.

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