JP2006120378A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus provided with a push-button unit on which a plurality of push-buttons are arranged, prevented from erroneous mounting of the push-button unit which can be easily mounted. <P>SOLUTION: An interphone 1 as an electronic apparatus comprises the push-button unit 2 on which a plurality of push-buttons 2a to 2f are symmetrically arranged in vertical and lateral directions; a circuit board 9 on which switches switched by a pushing operation of the push-buttons 2a to 2f of the push-button unit 2 are mounted; and a front cover 11 housing the push-button unit and the circuit board 9. The push-button unit 2 has a supporting part 21 for supporting the push-buttons 2a to 2f in addition to the push-buttons 2a to 2f, and the supporting part 22 is arranged asymmetrical against the arrangement of the push-buttons. The front cover 11 has openings 15a to 15f where top end parts of the push-buttons 2a to 2f are exposed, and positioning ribs 16a, 16b, to which the supporting part 21 is made to contact and the push-button unit 2 is positioned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device including a push button unit in which a plurality of push buttons are arranged.

  Conventionally, there are electronic devices such as intercoms in which a plurality of push buttons having the same shape are arranged symmetrically vertically and horizontally. In such an electronic device, the housing has a plurality of push button openings for exposing the tip of each push button to the outside of the housing, and each push button is individualized and the push button A different print display is given to each push button indicating the operation and function at the tip. Each push button opening of the housing has the same shape and is arranged symmetrically vertically and horizontally, and each push button inserts the tip of each push button into the push button opening corresponding to the print display, and With the tip portion exposed from the push button opening, it is held in the housing using another resin part.

Further, in the push button unit in which the push button is connected to the frame body through the flexible piece for elastic return, the latch piece and the latch rib are respectively provided on the back surface of the push button near the flexible piece and the back surface of the frame body. There is known a device that is provided so as to prevent plastic deformation of the flexible piece by abutment between the engaging piece and the engaging rib (for example, see Patent Document 1). Further, in an electronic device including a push button unit in which a push button is connected by a runner portion, a rib is provided on the inner side surface of the case, and by engaging the runner portion of the push button unit with a groove formed in the rib, A device in which a push button unit is positioned in a case is known (see, for example, Patent Document 2). Further, in an electronic apparatus including a push button unit in which a plurality of push buttons are connected by a thin rib and integrated, a protrusion is provided on one push button of the push button unit, and the protrusion is engaged with the push button unit. There is known a structure in which a concave portion is provided in a housing to prevent reverse insertion when the push button unit is assembled (for example, see Patent Document 3).
Japanese Utility Model Publication No. 3-128977 JP 2000-138017 A Japanese Utility Model Publication No. 61-51620

  However, in the above-described conventional electronic device, since a plurality of push buttons having the same shape with different print displays are individualized, it takes time to insert each push button into the corresponding push button opening of the housing. Also, the push button may be assembled by inserting it into the wrong push button opening. If the push button is inserted into the wrong push button opening and assembled, it takes time to reassemble. Furthermore, the management of each push button is also difficult, and mistakes may occur in the quantity confirmation work while checking the printed display contents of each push button at the time of delivery of the push button, and the delivery and receipt work.

  Therefore, it is conceivable to manufacture a push button unit in which a plurality of push buttons are integrally connected, and to attach the push button unit to a housing. In this way, since a plurality of push buttons are integrated, the number of assembling operations can be reduced, the time required for assembling operations can be shortened, the number of parts can be reduced, and parts management can be facilitated.

  However, in the configuration in which a plurality of push buttons having the same shape are arranged symmetrically in the vertical and horizontal directions, the push button arrangement is the same even when rotated 180 degrees. Therefore, a push button unit in which a plurality of push buttons are simply connected Then, there is a possibility that the push button unit is attached in the wrong direction rotated 180 degrees.

  Therefore, when adopting a configuration in which a push button unit in which a plurality of push buttons are connected is attached to the housing, it is desirable to have a structure that prevents the push button unit from being attached in an incorrect direction. It is also desirable that the push button unit has a structure that can be easily attached to the housing, and that the assembly workability can be improved.

  Note that the above-described Patent Document 1 and Patent Document 2 do not describe a configuration for preventing the push button unit from being attached in an incorrect direction, and the contents disclosed in Patent Document 1 and Patent Document 2 are not described. Even if it is applied, the above problem cannot be solved. Further, Patent Document 3 described above describes a configuration that prevents the push button unit from being reversely inserted by providing a protrusion on one push button of the push button unit and a recess on the housing. However, in such a configuration, the convex part of the push button and the concave part of the housing are very small, and it is difficult for the operator who performs the assembly to visually recognize such a convex part and the concave part, and it is difficult to engage them. Therefore, improvement in assembly workability cannot be expected. Therefore, even if the contents disclosed in Patent Document 3 are applied, the above problem cannot be solved.

  The present invention has been made in order to solve the above-mentioned problems. The push button can be easily managed, the workability can be reduced, the cost can be reduced, and the push button unit can be prevented from being mounted in the wrong direction. Another object of the present invention is to provide an electronic device that can be easily attached to the push button unit.

  In order to achieve the above object, the invention of claim 1 includes a push button unit in which a plurality of push buttons of the same shape are arranged symmetrically vertically and horizontally, and a plurality of switches that are switched by a push operation of each push button of the push button unit. In an electronic device including a circuit board on which a switch is mounted, and a casing that houses the push button unit and the circuit board and that has an opening in which the tip of each push button of the push button unit is exposed, the push button unit is In addition to the plurality of push buttons, each support button is sandwiched between the housing and the circuit board and supports the plurality of push buttons, and each push button elastically connects the plurality of push buttons to the support portion. The support portion is provided asymmetrically with respect to the arrangement of the push buttons, and the contact portion of the support portion with the housing is equal to each push button, etc. At intervals. A positioning rib for positioning the push button unit by contacting the support portion with a notch for increasing the substantial length of each hinge portion at a position where the hinge portion is connected to each hinge portion Each push button has a notch for increasing the substantial length of the hinge portion at the connection point with the hinge portion of the push button, and each hinge portion has the same shape. is there.

  The invention of claim 2 includes a push button unit in which a plurality of push buttons having the same shape are arranged symmetrically in the vertical direction or the horizontal direction, and a plurality of switches that are switched by a push operation of each push button of the push button unit. In an electronic apparatus including a circuit board to be operated and a casing that houses the push button unit and the circuit board and has an opening in which a tip of each push button of the push button unit is exposed, the push button unit includes a plurality of push button units. In addition to the push buttons, a support portion for supporting the plurality of push buttons and a flexible hinge portion for elastically connecting the plurality of push buttons to the support portion are provided. The housing is provided with a positioning rib for positioning the push button unit by contacting the support portion.

  According to a third aspect of the present invention, in the electronic device according to the second aspect, the support portion is sandwiched between the housing and the circuit board, and a contact portion of the support portion with the housing is in contact with each push button. They are at regular intervals.

  According to the first aspect of the present invention, since the plurality of push buttons are connected to the support portion by the hinge portion and integrated as a push button unit, the number of assembling operations can be reduced and the assembling time can be shortened. In addition, the number of parts is reduced, and parts management is facilitated. Therefore, cost reduction can be realized by reducing the number of work steps and the number of parts.

  Moreover, the housing has a positioning rib for positioning the push button unit by contacting the support portion of the push button unit, and the push button unit is asymmetric with respect to the arrangement of the push buttons. Each push button of the push button unit is exposed from the opening of the housing only when the push button unit is in a normal orientation and the support portion of the push button unit is brought into contact with the positioning rib of the housing. Therefore, it is possible to prevent the push button unit from being attached to the housing in the wrong direction. Further, whether or not the push button unit is in a proper orientation is determined by determining whether the push button unit is positioned in the positioning rib from the positional relationship between the push button and the support portion of the push button unit and the positional relationship between the opening of the housing and the positioning rib. The push button unit is positioned by simply bringing the support part of the push button unit into contact with the positioning rib of the housing, and each push button of the push button unit is placed in the housing. It can be attached in a state exposed to the opening. Therefore, it is possible to prevent the push button unit from being attached to the housing in the wrong direction, and it is possible to easily attach the push button unit, thereby improving the assembly workability.

  In addition, since each push button of the push button unit is held in the case when the support part of the push button unit is sandwiched between the case and the circuit board, the push button is held in the case as before. This eliminates the need for separate parts. In addition, the contact points between the support portion of the push button unit and the housing are equally spaced with respect to each push button, and each hinge portion has the same shape. Everything will be the same. In addition, the support part of the push button unit has a notch for increasing the substantial length of each hinge part at the connection part with each hinge part, and each push button is connected to each hinge part. Since there is a notch to increase the substantial length of each hinge part at the location, the amount of deformation of each hinge part when pressing each push button is small, which causes deterioration of each hinge part And the life of the push button unit can be extended.

  According to the second aspect of the present invention, since the plurality of push buttons are connected to the support portion by the hinge portion and integrated as a push button unit, the number of assembling operations can be reduced and the assembling time can be shortened. In addition, the number of parts is reduced, and parts management is facilitated. Therefore, cost reduction can be realized by reducing the number of work steps and the number of parts.

  Moreover, the housing has a positioning rib for positioning the push button unit by contacting the support portion of the push button unit, and the push button unit is asymmetric with respect to the arrangement of the push buttons. Each push button of the push button unit is exposed from the opening of the housing only when the push button unit is in a normal orientation and the support portion of the push button unit is brought into contact with the positioning rib of the housing. Therefore, it is possible to prevent the push button unit from being attached to the housing in the wrong direction. Further, whether or not the push button unit is in a proper orientation is determined by determining whether the push button unit is positioned in the positioning rib from the positional relationship between the push button and the support portion of the push button unit and the positional relationship between the opening of the housing and the positioning rib. The push button unit is positioned by simply bringing the support part of the push button unit into contact with the positioning rib of the housing, and each push button of the push button unit is placed in the housing. It can be attached in a state exposed to the opening. Therefore, it is possible to prevent the push button unit from being attached to the housing in the wrong direction, and it is possible to easily attach the push button unit, thereby improving the assembly workability.

  According to the invention of claim 3, since each push button of the push button unit is held in the housing by sandwiching the support portion of the push button unit between the housing and the circuit board, A separate part for holding the push button in the housing becomes unnecessary. Further, since the contact points between the support portion of the push button unit and the housing are equally spaced with respect to each push button, the click feeling when the push buttons are operated is all the same.

  Hereinafter, an electronic device according to an embodiment of the present invention will be described with reference to the drawings. 1, 2, 3 (a) and 3 (b) show a schematic configuration of an interphone that is an electronic device. The intercom 1 is a device that is installed in each room in the house and performs a voice call between the rooms or a notification when an abnormality occurs.

  The interphone 1 determines the operation content selected by the pressing operation of the six push buttons 2a to 2f for selecting an operation for selecting various operations of the interphone 1 and the push buttons 2a to 2f for selecting the operation. And a push button 3 for determining the operation. The interphone 1 also includes a liquid crystal display unit 4, an LED lamp 5, an alarm lamp 6, a microphone 7, a speaker 8, a circuit board 9 on which various electronic components for operating the interphone 1 are mounted, and an operation The pushbuttons 2a to 2f for selection, the pushbutton 3 for determining the operation, and the housing 10 for housing the circuit board 9 and the like are provided.

  The operation selection pushbuttons 2a to 2f are integrated as a pushbutton unit 2 (see FIG. 2). Each pushbutton 2a to 2f has the same shape and is symmetrical in the vertical and horizontal directions (2 rows and 3 columns). It is arranged. At the tip of each of the push buttons 2a to 2f, characters "Slave unit 1", "Slave unit 2", "Slave unit 3", "Transfer / go out", "At home", and "Report / Stop" are printed and displayed. Has been. The push button 3 for action determination is separate from the push button unit 2 and has a different shape from the push buttons 2a to 2f for action selection. On the front end of the push button 3 for determining the operation, a character “call / decision” is printed and displayed.

  The circuit board 9 includes a plurality of switches 60 (see FIG. 3) that are switched by pressing the operation selection pushbuttons 2a to 2f, and switches that are switched by the operation determination pushbutton 3 (not shown). ), Various electronic components for performing various operations of the intercom 1, a control circuit (not shown), and the like are mounted.

  The housing 10 includes a front cover 11 and a base 12. The front cover 11 has openings 15a to 15f for exposing the tip portions of the push buttons 2a to 2f for selecting the operation of the push button unit 2, positioning ribs 16a and 16b for positioning the push button unit 2, and an operation determining function. And an opening 17 for exposing the tip of the push button 3. The openings 15a to 15f have the same shape, and are symmetrically arranged vertically and horizontally corresponding to the arrangement of the push buttons 2a to 2f for selecting the operation of the push button unit 2. The push button unit 2 and the push button 3 are held in the housing 10, and the front end portions of the push buttons 2 a to 2 f are exposed from the openings 15 a to 15 f, and the front end portion of the push button 3 is exposed from the opening 17. The

  FIGS. 4A and 4B and FIGS. 5A to 5E show a schematic configuration of the push button unit 2. The push button unit 2 includes, in addition to the six push buttons 2a to 2f for operation selection, a support portion 21 for supporting the push buttons 2a to 2f, and push buttons 2a to 2f connected to the support portion 21. A plurality of hinge portions 22a to 22f provided in pairs for each of the buttons 2a to 2f.

  As described above, the operation selection push buttons 2a to 2f have the same shape and are arranged vertically and horizontally (2 rows and 3 columns) symmetrically. Each push button 2a to 2f has a protrusion 31 for switching the switch 60 mounted on the circuit board 9, and the hinge portions 22a to 22f are connected to the hinge portions 22a to 22f. A notch 32 for increasing the substantial length of 22f is provided.

  The support portion 21 supports the push buttons 2a to 2f via the hinge portions 22a to 22f. The support portion 21 has a role of positioning the push button unit 2 in addition to a role of supporting the push buttons 2a to 2f. For this reason, the support portion 21 surrounds the push buttons 2a, 2b, and 2c in a frame shape, that is, a push shape. The buttons 2a to 2f are provided asymmetrically with respect to the arrangement. The support part 21 has the notch 41 for lengthening the substantial length of hinge part 22a-22f in the connection location with each hinge part 22a-22f. Each hinge part 22a-22f is the same shape, has flexibility, and has connected each pushbutton 2a-2f to the support part 22 elastically.

  In the push button unit 2 having such a configuration, the support portion 21 is fitted inside the positioning ribs 16 a and 16 b (see FIGS. 2, 3 (a) and (b)) of the front cover 11. The circuit board 9 is fixed to the front cover 11 by screws with screws 70 from the back side.

  The positioning ribs 16a and 16b have such a shape that the support portion 21 does not shift in the X direction (left and right direction) and the Y direction (up and down direction) when the support portion 21 of the push button unit 2 is fitted. In addition, the push buttons 2a to 2f of the push button unit 2 are formed at positions where they are exposed from the openings 15a to 15f of the front cover 11 when the support portion 21 is fitted with the push button unit 2 in the normal direction. Has been.

  Therefore, the push button unit 2 fits the support portion 21 inside the positioning ribs 16a and 16b, so that the outer surface of the support portion 21 comes into contact with the inner surface of the positioning ribs 16a and 16b. When the push button unit 2 is positioned in the normal direction (left and right direction) and the Y direction (up and down direction), the front ends of the push buttons 2a to 2f are exposed from the openings 15a to 15f of the front cover 11. It will be in the state. At this time, when the push button unit is rotated 180 degrees in the wrong direction, the support portion 21 is provided asymmetrically with respect to the arrangement of the push buttons 2a to 2f, and therefore, the tip of each push button 2a to 2f. The part is not exposed from the openings 15a to 15f.

  Further, the push button unit 2 is configured such that after the support portion 21 is fitted inside the positioning ribs 16a and 16b, the circuit board 9 is screwed with the screws 70 so that the front end portions of the push buttons 2a to 2f are moved to the front. In a state exposed from the openings 15 a to 15 f of the cover 11, the support portion 21 is sandwiched between the front cover 11 and the circuit board 9, that is, positioned in the Z direction (front-rear direction). Fixed.

  The support portion 21 has a plurality of contact surfaces 29a to 29f that come into contact with the front cover 11 when sandwiched between the front cover 11 and the circuit board 9 (FIGS. 4A, 4B, 5A). ) To (e)), and the contact surfaces 29a to 29f are provided at equal intervals with respect to the push buttons 2a to 2f. Accordingly, when the support portion 21 is sandwiched between the front cover 11 and the circuit board 9, the support portion 21 contacts the front cover 11 at equal intervals with respect to the push buttons 2a to 2f.

  In the push button unit 2 attached in this manner, when the push buttons 2a to 2f for operation selection are pushed from the outside of the front cover 11, the hinge portions 22a to 22f are bent and the push buttons 2a to 2f are moved. The switch 60 mounted on the circuit board 9 is pressed to perform a switching operation. The intercom 1 is assembled by attaching the push button unit 2 as described above, and attaching the push button 3 using a holding member (not shown) and then fastening the base 12 with screws 80.

  According to the intercom 1 having such a configuration, the six push buttons 2a to 2f for selecting operations are connected to the support portion 21 by the hinge portions 22a to 22f and integrated as the push button unit 2. The number of man-hours for assembly work is reduced, the time for assembly work can be shortened, the number of parts is reduced, and parts management is facilitated. Therefore, cost reduction can be realized by reducing the number of work steps and the number of parts.

  Moreover, the front cover 11 has positioning ribs 16a and 16b for positioning the push button unit 2 by contacting the support portion 21 of the push button unit 2, and the push button unit 2 has the support portion 21 having the push button 2a. Since it is asymmetric with respect to the arrangement of ˜2f, the push button unit 2 is placed in the normal direction, and only when the support portion 21 of the push button unit 2 is fitted into the positioning ribs 16a and 16b of the front cover 11, the push button unit 2 is pushed. The push buttons 2 a to 2 f of the button unit 2 are exposed from the openings 15 a to 15 f of the front cover 11. Therefore, it is possible to prevent the push button unit 2 from being attached to the front cover 11 in the wrong direction.

  Further, whether or not the push button unit 2 is in a proper orientation is determined by the positional relationship between the push buttons 2a to 2f of the push button unit 2 and the support portion 21, and the openings 15a to 15f of the front cover 11 and the positioning ribs 16a. From the arrangement relationship of 16b, it is obvious at a glance before the push button unit 2 is fitted into the positioning ribs 16a and 16b. Further, the push button unit 2 is positioned simply by fitting the support portion 21 of the push button unit 2 into the positioning ribs 16a and 16b of the front cover 11, and the push buttons 2a to 2f of the push button unit 2 are moved to the front cover. 11 can be attached in a state exposed to the openings 15a to 15f. Therefore, it is possible to prevent the push button unit 2 from being attached to the housing in the wrong direction, and it is possible to easily attach the push button unit 2 to improve the assembly workability.

  Further, since the support portion 21 of the push button unit 2 is sandwiched between the front cover 11 and the circuit board 9, the push buttons 2a to 2f of the push button unit 2 are held. A separate part for holding the inside of the housing becomes unnecessary. Further, the contact portions between the support portion 21 of the push button unit 2 and the front cover 11 are equally spaced with respect to the push buttons 2a to 2f, and the hinge portions 22a to 22f have the same shape. The click feeling when pressing 2a to 2f is the same.

  Moreover, the support part 21 of the pushbutton unit 2 has a notch 41 for increasing the substantial length of each of the hinge parts 22a to 22f at a connection position with each of the hinge parts 22a to 22f. 2a to 2f have notches 32 for increasing the substantial length of the hinge portions 22a to 22f at the connection points with the hinge portions 22a to 22f, and therefore the deformation amount of the hinge portions 22a to 22f. Therefore, the deterioration of the hinge portions 22a to 22f can be suppressed, and the push button unit 2 can have a long life.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible. For example, the support portion 21 may be configured so that the outer shape of the support portion 21 is asymmetrical and cannot be fitted into the positioning ribs 16a and 16b when the push button unit 2 is not in a normal orientation. Moreover, the support part 21 does not need to be formed in frame shape, for example, may be formed in U shape and L shape. The arrangement of the push buttons is not limited to 2 rows and 3 columns, and may be arbitrary, such as 1 row, 4 columns, and 3 rows and 3 columns. The electronic device of the present invention is not limited to the intercom 1 and can be applied to AV devices, image display projectors, printers, and the like.

The perspective view which shows schematic structure of the intercom which concerns on one Embodiment of this invention. The perspective view before the assembly seen from the back side which shows the structure of the intercom. It is a figure equivalent to the AA line cross section of FIG. 1 which shows the structure of the intercom, (a) is sectional drawing of the state which attached the pushbutton unit, (b) is sectional drawing before attaching the pushbutton unit. . (A) is the perspective view seen from the front side which shows the structure of the pushbutton unit of the intercom, (b) is the perspective view seen from the back side which shows the structure of the pushbutton unit. (A) The back view which shows the structure of the pushbutton unit, (b) is the top view, (c) is the front view, (d) is the BB sectional drawing of (b), (e) is ( The CC sectional view taken on the line of c).

Explanation of symbols

1 Intercom (electronic equipment)
2 Push button unit 2a-2f Push button 9 Circuit board 10 Housing 11 Front cover 12 Base 15a-15f Opening 16a, 16b Positioning rib 21 Support part 22a-22f Hinge part 32 Notch 41 Notch 60 Switch

Claims (3)

A push button unit in which a plurality of push buttons of the same shape are arranged symmetrically vertically and horizontally, a circuit board on which a plurality of switches that are switched by a push operation of each push button of the push button unit are mounted, and the push button unit And an electronic device comprising a housing that stores the circuit board and has an opening in which a tip of each push button of the push button unit is exposed.
In addition to the plurality of push buttons, the push button unit is sandwiched between the housing and the circuit board, and a support portion for supporting the plurality of push buttons, and the plurality of push buttons are supported by the push button unit. A hinge portion having a flexibility provided for each push button elastically connected to the portion,
The support portion is provided asymmetrically with respect to the arrangement of the push buttons, and the contact portions of the support portion with the housing are equally spaced with respect to the push buttons, Having a notch to lengthen the substantial length of each hinge part at the connection point with the hinge part,
The housing has positioning ribs for positioning the pushbutton unit by contacting the support portion,
Each of the push buttons has a notch for increasing the substantial length of the hinge portion at the connection portion of the push button with the hinge portion,
Each said hinge part is the same shape, The electronic device characterized by the above-mentioned. A push-button unit in which a plurality of push buttons of the same shape are arranged symmetrically in the vertical direction or the horizontal direction, and a circuit board on which a plurality of switches that are switched by a push operation of each push button of the push button unit are mounted; In an electronic device that includes the casing that houses the push button unit and the circuit board and has an opening in which a tip portion of each push button of the push button unit is exposed.
The push button unit includes, in addition to the plurality of push buttons, a support portion for supporting the plurality of push buttons, and a flexible hinge portion for elastically connecting the plurality of push buttons to the support portion. With
The support portion is provided asymmetrically with respect to the arrangement of the push buttons,
The electronic device according to claim 1, wherein the casing includes a positioning rib that positions the push button unit by contacting the support portion. The electronic device according to claim 2, wherein the support portion is sandwiched between the housing and the circuit board, and contact portions of the support portion with the housing are equidistant from the push buttons. .

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