JP4542466B2 - Holding structure of pressing operation unit - Google Patents

Description

  The present invention relates to a pressing operation portion, and more particularly to a holding structure thereof.

  2. Description of the Related Art Conventionally, in an electronic device such as an audio device or a video playback device, a seesaw knob that selectively supports two switches by being tilted and supported by an operation panel has been used. Examples of such a seesaw knob holding structure will be described with reference to FIGS.

  As shown in FIG. 5, the seesaw knob 5 shown in FIGS. 6A and 6B is disposed so as to enter the hole 6a of the operation panel 6, and its shaft 5a is fitted into the recess 6b of the operation panel 6. It is supported so as to be rotatable around the shaft 5a. It should be noted that a retainer prevention member for locking the seesaw knob 5 so as not to be detached from the operation panel 6 is not shown.

  The bosses 5b and 5b provided on both sides of the bottom surface of the seesaw knob 5 are opposed to the switches 4 and 4 mounted on the printed circuit board 3 fixed to the lower side of the operation panel 6. Usually, the seesaw knob 5 is in a neutral position by the elasticity applied to the actuators of the switches 4 and 4 or the elasticity of the hinge provided on the operation panel 6 and the like, and the switches 4 and 4 are not operated.

  When one side of the seesaw knob 5 is pressed with a finger, the seesaw knob 5 is tilted to activate one of the switches 4 and 4. FIG. 7 schematically shows a state where the seesaw knob 5 is pushed and tilted in the arrow direction. In FIG. 7, the distance in the operation panel surface direction from the shaft 5 a to the operating point of the switch 4 is indicated by L, and the tilt angle of the seesaw knob 5 is indicated by θ. As the tilt angle θ increases, the boss 5b tilts and the switch 4 is pushed from an oblique direction.

  In this case, there is a problem that the switch 4 does not operate smoothly, and (a) the feel of operating the seesaw knob 5 is deteriorated. Further, (b) since the boss 5b moves obliquely, it may fall off from the actuator of the switch 4 and may not return to its original state due to a lateral force. Further, (c) a retaining member for securing the seesaw knob 5 so as not to be detached from the operation panel 6 is required, which increases the number of parts and the number of assembly steps.

  In the operation button device proposed in Japanese Patent Application Laid-Open No. 10-154442, the projection 1e provided at the center portion of the operation button 1 is supported by the receiving portion 2c of the main body case, and the operation button 1 is rotated around the tip of the projection 1e. Tilt. Then, the claw portion 1g provided on the operation button 1 is engaged with the opening edge 2b of the main body case, thereby preventing the operation button 1 from coming off. In this operation button device, the problem (c) is improved, but the problems (a) and (b) are present.

  In the seesaw knob holding structure proposed in Japanese Patent Application Laid-Open No. 2001-256862, the seesaw knob 1 is supported so as to be rotatable around the boss 4a by engaging the boss 4a of the operation panel 4 with the recess 1d. It is held in a neutral position by both end support beams 1b provided on the knob 1 and fastened to the operation panel 4. In this operation button device, the number of parts is improved in the point (c), but a screwing operation is necessary. Moreover, there existed the problem of said (a) and (b).

  A seesaw button proposed in Japanese Patent Laid-Open No. 2000-353454 is a switch 32a fixed to a base 31 by bending a seesaw arm 34 integrally formed with a base column 33 fixed to the center of the base 31 around the center. Alternatively, 32b is activated. The joint protrusions 14 a and 14 b of the seesaw button portion 10 are welded to the seesaw arm 34.

  This seesaw button has the above problems (a) and (b). Further, in the point (c) above, a step of welding the projections 14a and 14b of the seesaw button 10 to the seesaw arm 34 after the button support 12 of the seesaw button 10 is engaged with the base support 33 of the base 31 is required. There was a problem of becoming.

  In the operation button proposed in Japanese Utility Model Laid-Open No. 4-99644, the operation button 5 is supported by the torsion support portion 8 at the center in the longitudinal direction, and the torsion support portion 8 is elastically deformed to switch 6. , 7 are activated alternatively. This operation button device has the above problems (a) and (b).

  In the button switch device proposed in Japanese Utility Model Laid-Open No. 2-124627, the button 1 is supported so as to be rotatable about the rotation shaft 14 at the substantially central portion, and the switches 4 and 5 provided on the button 1 are respectively operated. The actuating rods 8 and 9 to be elastically deformed are guided at the tip portions thereof through the through holes 20 and 21.

  In this button switch device, the problems (a) and (b) are improved, but a large frictional resistance is generated between the operating rods 8 and 9 and the through holes 20 and 21 in order to deform the operating rods 8 and 9. Has occurred, and the operational feeling of the button 1 has deteriorated.

In the push button structure proposed in Japanese Patent Application Laid-Open No. 2001-236851, both sides of the operation unit 12 are elastically supported by spring pieces 13 and 13, but the operation unit 12 is pushed straight to operate one push button switch 20. Is. And it does not aim at tilting the operation unit 12.
Japanese Patent Laid-Open No. 10-154442, paragraphs 0007 to 0009, FIG. Japanese Patent Laid-Open No. 2001-2568622, paragraphs 0015 to 0018, FIG. Japanese Unexamined Patent Publication No. 2000-353454, paragraphs 0015 to 0019, FIG. Japanese Utility Model Publication No. 4-99644, paragraph 0016, FIG. Japanese Utility Model Laid-Open No. 2-124627, page 8, line 14 to page 10, line 16, FIGS. 2 and 3 JP 2001-236851 A, paragraphs 0011 to 0015, FIG.

  The present invention has been made in view of the above points, and the object of the present invention is to provide a good feeling to operate the pressing operation unit, and there is a risk that the boss that operates the switch may fall off from the switch actuator. There is no need to provide a holding structure for the pressing operation unit.

  Another object of the present invention is to provide a holding structure for a pressing operation portion with a small number of parts and assembly man-hours.

The holding structure of the pressing operation portion according to the present invention is held by the operation panel so as to be bi-directionally tiltable so that one side of both sides sinks from the front of the operation panel with respect to the other side, and is tilted by the pressing operation and disposed behind. In the holding structure of the pressing operation unit that operates the switch on one side of the pair of switches, an axis that serves as the rotation axis of the tilt is provided behind both sides of the pressing operation unit, and the two axes are operated It is supported so as to be sandwiched between a rib provided on the panel and a hinge provided behind the rib.

  Further, in the holding structure of the pressing operation unit, the respective shafts of the pressing operation unit are pushed into the sandwiched positions by elastically deforming the ribs and hinges of the operation panel.

  According to the holding structure of the pressing operation portion of the present invention, since the tilt angle of the pressing operation portion for operating the switch becomes small, the switch can be operated smoothly without the boss of the pressing operation portion being inclined, In addition, since the pressing operation unit rotates about the axis provided in the pressing operation unit, the frictional resistance is small, and the feeling of operating the pressing operation unit is good.

  Furthermore, the boss of the pressing operation unit does not fall off from the switch actuator and receive the lateral force and cannot be restored.

  The best mode for carrying out the present invention will be described below with reference to examples. FIG. 1 is a side view showing a holding structure of a pressing operation unit according to an embodiment of the present invention, excluding some members, and FIG. 2 is a perspective view of the pressing operation unit used in the holding structure of the pressing operation unit seen from the back side. FIG. 3 is a cross-sectional view taken along the line AA, excluding some members in FIG.

  As shown in FIG. 1, the pressing operation unit 1 shown in FIGS. 1 and 2 is arranged so as to enter the hole 2 c of the operation panel 2, and its shafts 1 a, 1 a... Are hinged with the ribs 2 a, 2 a. 2b, 2b, etc. are sandwiched and supported.

  The pressing operation unit 1 is pushed in from above the hole 2c of the operation panel 2, and deforms the ribs 2a, 2a ... and the hinges 2b, 2b ... provided on the operation panel 2, and the shafts 1a, 1a ... enter between them. . The shafts 1a, 1a, ... are positioned in the direction along the front surface of the operation panel 2 by positioning projections 2B, 2B, ... of the hinges 2b, 2b, ... shown in FIG.

  The bosses 1b and 1b provided on both sides of the lower surface of the pressing operation unit 1 are opposed to the switches 4 and 4 mounted on the printed circuit board 3 fixed to the lower side of the operation panel 2. The normal pressing operation unit 1 is in a neutral position due to the elasticity of the hinges 2b, 2b... And the switches 4 and 4 are not operated.

  When one side of the pressing operation unit 1 is pressed with a finger, the pressing operation unit 1 is elastically deformed by applying a large load to the hinge 2b on the pressed side. The pressing operation unit 1 tilts around the shaft 1a supported by the hinge 2b. Then, one of the switches 4 and 4 is operated.

  FIG. 4 schematically shows a state in which the pressing operation unit 1 is pushed and tilted in the arrow direction. If the size of the pressing operation unit 1 is the same as that of the conventional pressing operation unit 5 described in FIG. 7 and the stroke of the boss 1b necessary for operating the switch 4 is the same, as shown in FIG. The distance in the operation panel surface direction from the shaft 1a to the operating point of the switch 4 is 2L, and the tilt angle of the pressing operation unit 1 is 1 / 2θ. That is, the tilting angle of the pressing operation unit 1 is ½ of the tilting angle of the conventional pressing operation unit 5 described in FIG.

  Thus, since the tilt angle of the pressing operation unit 1 for operating the switch 4 is reduced, the switch 4 can be operated smoothly without the boss 1b being inclined, and the pressing operation unit 1 is connected to the shaft 1a. Since it rotates around, the frictional resistance is small, and the feeling of operating the pressing operation unit 1 is good.

  Further, the boss 1b does not fall off from the actuator of the switch 4 and does not return to its original state due to a lateral force. Further, in this embodiment, there is no need for a retaining member for preventing the pressing operation unit 1 from being detached from the operation panel 2, and the number of parts is reduced, and the operation panel 2 can be simply pushed into the operation panel 2. Since it can be assembled, the number of assembly steps is reduced.

  The embodiment is configured as described above, but the invention is not limited thereto. For example, even if a retaining member is used, the effect of the invention is obtained.

It is a side view which shows the holding structure of the press operation part which is an Example of this invention except for some members. It is the perspective view which looked at the press operation part used for the holding structure of the press operation part from the back side. It is AA sectional drawing shown excluding the one part member in FIG. It is a side view shown excluding a part member for showing an operation of a holding structure of the press operation part. It is a side view which shows the example of the holding structure of the conventional press operation part except for a part member. 6A is a perspective view of the pressing operation unit used in the holding structure of the pressing operation unit as viewed from the front side, and FIG. 6B is a perspective view of the pressing operation unit used in the holding structure of the pressing operation unit from the back side. FIG. It is a side view shown excluding a part member for showing an operation of a holding structure of the press operation part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Press operation part, 1a axis | shaft, 1b boss | hub 2 Operation panel, 2a rib, 2b hinge, 2B positioning protrusion, 2c hole 3 Printed circuit board 4 Switch 5 Seesaw knob, 5a axis | shaft, 5b Boss 6 Operation panel, 6a hole, 6b Recessed part

Claims (2)

A switch on one side of a pair of switches that are tilted by a pressing operation and placed behind is held by the operation panel so that one side of both sides sinks from the front of the operation panel with respect to the other side. In the holding structure of the pressing operation unit to be operated, the shafts that serve as the pivot shafts of the tilt are respectively provided behind both sides of the pressing operation unit, and the two shafts are provided behind the ribs provided on the operation panel . A structure for holding a pressing operation portion, wherein the holding structure is supported so as to be sandwiched between hinges. The holding structure of the pressing operation part according to claim 1, wherein each shaft of the pressing operation part is pushed into the sandwiched position by elastically deforming a rib and a hinge of the operation panel.

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