JP2007066713A - Switch-attaching structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to easily attach/detach a switch with respect to an attachment panel in a switch attachment structure suitable for use in a switch that turningly operates a switch knob. <P>SOLUTION: The switch-attaching structure is for attaching the switch 15 equipped with a switch body 20 having an operation shaft 25, and the switch knob 21 mounted on the operation shaft 25 and operated during the operation of the switch, to a front panel 13. An insertion hole 19 is formed in the front panel 13 for having the switch knob 21 and a cylindrical extending part 31 inserted therein, and the switch body 20, having the switch knob 21 mounted thereon, is fixed to the front panel 13 using a switch holder 22. At this time, the switch holder 22 is fixed to the back face of the front panel 13, with the switch knob 21, in a state of being positioned operably inside the insertion hole 19. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a switch mounting structure, and more particularly to a switch mounting structure suitable for use in a switch for rotating a switch knob.

  For example, in an electronic device, various switches for operating the electronic device are provided on the front panel. Specifically, there are a push switch that performs a switch operation by pressing and a rotary switch that performs operations such as tuning by rotating.

  Usually, this type of switch is configured to include a switch body having a driven portion and a switch knob operated when the switch is operated. The switch body is provided on the front panel and the panel, and the switch knob is mounted on a driven portion (operation shaft) protruding from the switch body.

Further, as shown in FIG. 5 of the cited document 1, there are a switch body mounting structure that is provided on the front surface of the front panel and a switch body that is provided on the back side of the front panel. In the mounting structure of the switch body on the front surface of the front panel, the switch knob is directly attached to the operation shaft protruding from the switch body. On the other hand, in the switch body mounting structure on the back of the front panel, an insertion hole is formed through the front panel for inserting the operation shaft, and the switch knob is attached to the operation shaft protruding from the front panel through the insertion hole. It was supposed to be a structure.
JP 2001-236858 A

  However, in the configuration in which the switch body is provided in front of the front panel, it is necessary to connect the wiring of the switch body to the internal circuit board via the front panel, and the wiring connection structure becomes troublesome. In addition, since the switch body protrudes from the front surface of the front panel and the switch knob protrudes from the front surface of the front panel, the design of the electronic device becomes a problem.

  In addition, in the conventional mounting structure of the switch body on the back of the front panel, the work to attach the switch to the front panel is to first attach the switch body to the front panel and then use the operating shaft that protrudes from the insertion hole to the front panel. It was necessary to attach a switch knob. Further, in order to remove the switch from the front panel during maintenance or the like, it is necessary to first remove the switch knob from the operation shaft and then remove the switch body from the front panel. For this reason, in the conventional attachment structure, there existed a problem that attachment and removal of the switch with respect to a front panel were troublesome.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a switch mounting structure capable of easily mounting and dismounting the switch with respect to the mounting panel.

  In order to solve the above-described problems, the present invention is characterized by the following measures.

The invention described in claim 1
In a switch mounting structure in which a switch having a switch body having a driven part and a switch knob mounted on the driven part and operated at the time of switch operation is attached to the mounting panel.
While forming an insertion hole through which the switch knob can be inserted in the mounting panel,
A holder is provided for fixing the switch to which the switch knob is mounted to a back surface of the mounting panel in a state where the switch knob is operably positioned in the insertion hole.

  According to the above invention, the insertion hole formed in the mounting panel is configured to allow the switch knob to be inserted, and the switch to which the switch knob is attached is in a state where the switch knob is operably positioned in the insertion hole. Fixed to the back of the mounting panel. Therefore, since the switch can be fixed to the mounting panel with the switch knob mounted, the switch mounting operation can be simplified. In addition, when fixing the switch to the mounting panel or removing the switch from the mounting panel for maintenance, etc., it is not necessary to remove the switch knob from the driven part. There is no such thing as a drop.

The invention according to claim 2
The switch mounting structure according to claim 1,
The holder includes a first fixing portion that fixes the switch body, and a second fixing portion that is fixed to the back surface of the mounting panel.

  According to the above invention, the first fixing portion for fixing the switch body and the second fixing portion for fixing to the back surface of the mounting panel are provided in the holder, so that the fixing position between the second fixing portion and the mounting panel is provided. The switch body can be fixed to the mounting panel with a degree of freedom at the fixing position. Therefore, by fixing the switch body to the mounting panel via the holder, the switch body can be reliably fixed to the mounting panel in a state where the switch knob is positioned in the insertion hole.

The invention according to claim 3
The switch mounting structure according to claim 1 or 2,
The holder is provided with an extending portion that is inserted into the insertion hole and extends to the surface of the mounting panel.

  According to the above invention, since the extension portion formed in the holder is inserted into the insertion hole, the insertion hole is configured to be blocked by the extension portion. Therefore, the insertion hole is relatively associated with the switch knob. Even if the hole has a large shape, it is possible to prevent dust from entering the mounting panel through the insertion hole.

  According to the present invention, since the switch can be fixed to the mounting panel in a state where the switch knob is mounted, the switch mounting operation can be simplified. In addition, when fixing the switch to the mounting panel or removing the switch from the mounting panel for maintenance, etc., it is not necessary to remove the switch knob from the driven part. Can be prevented.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows the front of an electronic device 10 to which a switch mounting structure according to an embodiment of the present invention is applied. The electronic device 10 is, for example, a tuner device, and has a configuration in which a display unit 14, switches 15 and 16, a door panel 12, and the like are provided on a front panel 13 of the device body 11.

  The door panel 12 is provided so as to cover an opening (not shown) formed in the front panel 13. A normally unused switch, a slot portion into which a recording medium is inserted and removed, and the like are arranged in an opening formed in the front panel 13. The door panel 12 is attached to the opening, and when the switch or the slot is not used, the door panel 12 covers the opening so that the inside of the opening cannot be seen from the outside.

  The display unit 14 is a liquid crystal display device on which various information necessary for operating the electronic device 10 is displayed. The switch 16 is a mode selection switch, and can be selectively switched by pressing.

  The switch 15 is a channel selection switch and is attached to the front panel 13 by applying the switch mounting structure according to the present invention. Hereinafter, the mounting structure of the switch 15 will be described. 2 and 3 are an exploded perspective view and a sectional view showing a mounting structure for attaching the switch 15 to the front panel 13.

  The front panel 13 (corresponding to the mounting panel described in the claims) is disposed in the front portion of the device body 11, and an insertion hole 19 is formed at the position where the switch 15 is disposed. The diameter of the insertion hole 19 is larger than that of the hole through which the operation shaft provided in the conventional switch body is inserted.

  Specifically, the insertion hole 19 is formed to have a diameter larger than a diameter of a switch knob 21 described later and a diameter of a cylindrical extending portion 31 constituting the switch holder 22. In other words, the cylindrical extension 31 of the switch knob 21 and the switch holder 22 is configured to be inserted into the insertion hole 19.

  A screw hole 38 is formed in the vicinity of the insertion hole 19 on the back surface of the front panel 13 (see FIG. 3). The screw hole 38 is used to fix the switch holder 22 to the front panel 13 as will be described later.

  On the other hand, the switch 15 generally includes a switch body 20, a switch knob 21, a switch holder 22, and the like.

  The switch body 20 is, for example, a rotary encoder, and a plurality of terminals 27 to be soldered to a circuit board (not shown) are provided on the lower surface of the base portion 24. Further, on the upper surface of the base portion 24, an operation shaft 25 serving as a driven portion is provided.

  The operation shaft 25 protrudes from the base 24, and a part of the operation shaft 25 has a half-moon shape. The operation shaft 25 is configured to rotate. When the operator rotates the operation shaft 25 via a switch knob 21 described later, the switch body 20 performs a channel selection process. Further, a tongue piece 26 projects from the upper surface of the base 24.

  The switch knob 21 is formed of resin and has a bottomed cylindrical knob body 28. As shown in FIG. 5 in addition to FIGS. 2 and 3, the switch knob 21 has a plurality of operation ribs 29 formed on the surface (front side) of the knob body 28. By forming the operation rib 29, the operability of the switch knob 21 is improved.

  A fixed shaft 30 is formed on the rear surface of the knob body 28 so as to protrude. A half-moon shaped press-fitting hole is formed inside the fixed shaft 30. The shape of the press-fitting hole corresponds to the shape of the operation shaft 25. Therefore, the switch knob 21 is fixed (attached) to the switch body 20 by press-fitting the fixed shaft 30 into the operation shaft 25.

  The switch holder 22 is resin-molded, and roughly includes a cylindrical extension portion 31 and a fixed flange portion 33. As described above, the cylindrical extending portion 31 has a size that allows the outer diameter to be inserted into the insertion hole 19 formed in the front panel 13. That is, the outer diameter (diameter) of the cylindrical extension 31 is slightly smaller than the diameter of the insertion hole 19.

  A fixed plate portion 32 (corresponding to the first fixed portion described in the claims) is formed at a substantially central position inside the cylindrical extending portion 31. The fixing plate portion 32 is configured such that an insertion hole 34 is formed at the center and a fixing hole 35 is formed on a side portion thereof.

  The switch body 20 described above is fixed to a fixed plate portion 32 formed on the switch holder 22. Specifically, the switch main body 20 inserts the operation shaft 25 into the insertion hole 34, inserts the tongue piece 26 into the fixing hole 35, and folds the tongue piece 26 protruding from the fixing hole 35. By this, it fixes to the fixed board part 32 (switch holder 22).

  The fixing flange 33 (corresponding to the second fixing portion described in the claims) is formed to extend outward from the lower portion of the cylindrical extension portion 31. The fixing flange 33 is formed with an insertion hole 36 through which the screw 37 is inserted. Further, the formation position of the insertion hole 36 is configured to correspond to the formation position of the screw hole 38 formed in the front panel 13 described above.

  In the above configuration, in order to attach the switch 15 to the front panel 13, as described above, the tongue piece 26 is inserted into the fixing hole 35, and the portion protruding from the fixing hole 35 is bent to form the switch body 20. Is fixed to the switch holder 22. Subsequently, the switch knob 21 is fixed to the operation shaft 25 protruding from the fixing plate portion 32 of the switch holder 22.

  Specifically, the fixed shaft 30 of the switch knob 21 is press-fitted into the operation shaft 25. Thereby, the switch body 20, the switch knob 21, and the switch holder 22 are integrated, and thereafter, the switch body 20, the switch knob 21, and the switch holder 22 (that is, the switch 15) can be handled integrally.

  Next, the switch knob 21 and the cylindrical extension portion 31 are inserted into the insertion hole 19 formed in the front panel 13, and the fixed flange portion 33 is brought into contact with the back surface of the front panel 13 and is formed in the fixed flange portion 33. The insertion hole 36 and the screw hole 38 are aligned. Subsequently, the screw 37 is inserted into the screw hole 38 through the insertion hole 36 from the back side of the fixing hook 33.

  As a result, the switch holder 22 is fixed to the front panel 13, whereby the switch 15 is attached to the front panel 13. Further, in this attached state, the cylindrical extension portion 31 and the switch knob 21 are inserted into the insertion hole 19, and the switch knob 21 protrudes from the surface of the front panel 13 by an amount that can be operated at least. Has been.

  As described above, in the mounting structure according to the present embodiment, the switch body 20, the switch knob 21, and the switch holder 22 (that is, the switch 15) are integrated with respect to the front panel 13 from the back surface of the front panel 13. Installation can be performed. Therefore, since the switch 15 can be fixed to the front panel 13 with the switch knob 21 attached, the mounting work of the switch 15 can be simplified.

  Further, when the switch 15 is fixed to the front panel 13 or when the switch 15 is removed from the front panel 13 due to maintenance or the like, it is not necessary to remove the switch knob 21 from the switch body 20 each time as in the prior art. It is possible to improve the performance. Further, since the operation shaft 25 and the fixed shaft 30 do not need to be removed after being press-fitted once, there is no possibility that the mounting force decreases with time between the switch knob 21 and the switch body 20.

  Further, in the present embodiment, the fixing plate portion 32 that fixes the switch main body 20 to the switch holder 22 and the fixing hook portion 33 that is fixed to the back surface of the front panel 13 are provided together. By appropriately selecting a fixing position with the panel 13, the switch body 20 can be fixed to the front panel 13 with a degree of freedom at the fixing position. Therefore, the switch body 20 can be reliably fixed to the front panel 13 in a state where the switch knob 21 is positioned in the insertion hole insertion hole 19.

  Further, in the present embodiment, the cylindrical extension portion 31 formed in the switch holder 22 is inserted into the insertion hole 19, and thus the insertion hole 19 is closed by the cylindrical extension portion 31. For this reason, even if the insertion hole 19 has a large shape corresponding to the diameter of the switch knob 21, it is possible to suppress dust from entering the front panel 13 through the insertion hole 19.

FIG. 1 is a front view showing an electronic apparatus to which a switch mounting structure according to an embodiment of the present invention is applied. FIG. 2 is an exploded perspective view of a switch mounting structure according to an embodiment of the present invention. FIG. 3 is an exploded cross section of a switch mounting structure according to an embodiment of the present invention. 4A and 4B are diagrams for explaining the switch holder. FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a line AA in FIG. It is sectional drawing which follows. 5A and 5B are diagrams for explaining the switch knob. FIG. 5A is a front view, FIG. 5B is a right side view, FIG. 5C is a rear view, and FIG. It is sectional drawing which follows the BB line in 5 (A).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electronic device 11 Apparatus main body 13 Front panel 15 Switch 19 Insertion hole 20 Switch main body 21 Switch knob 22 Switch holder 25 Operation shaft 26 Tongue piece part 28 Knob main body 29 Operation rib 30 Fixed shaft 31 Cylindrical extension part 32 Fixed plate part 33 Fixing flange 34 Insertion hole 35 Fixing hole 36 Insertion hole 37 Screw 38 Screw hole

Claims (3)

In a switch mounting structure in which a switch having a switch body having a driven part and a switch knob mounted on the driven part and operated at the time of switch operation is attached to the mounting panel.
While forming an insertion hole through which the switch knob can be inserted in the mounting panel,
A switch mounting structure comprising a holder for fixing the switch to which the switch knob is mounted to a back surface of the mounting panel in a state where the switch knob is operably positioned in the insertion hole.   The switch mounting structure according to claim 1, wherein the holder includes a first fixing portion that fixes the switch body, and a second fixing portion that is fixed to the back surface of the mounting panel.   The switch mounting structure according to claim 1, wherein the holder is provided with an extending portion that is inserted into the insertion hole and extends on a surface of the mounting panel.

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