JP4655827B2 - Electronic control knob mounting structure - Google Patents

Description

  The present invention relates to an operation knob mounting structure for an electronic device.

  An example of a conventional operation knob mounting structure of an electronic device will be described with reference to FIGS. The exterior member 6 is put on the outside of the panel 5 shown in the figure, and the body 4a of the operation knob 4 whose surface forms the pressing surface 4b is projected from the hole 5a of the panel 5 and the hole 6a of the exterior member 6, and the operation knob 4 A flange 4c formed around the lower portion of the body 4a is locked to the periphery of the hole 5a of the panel 5, and the amount of protrusion from the hole 6a of the exterior member 6 of the body 4a of the operation knob 4 is restricted.

  On the lower side of the operation knob 4, a spring for biasing the operation knob 4 upward and a switch mounted on a printed circuit board are arranged, but the illustration is omitted in FIG. When the pressing surface 4b of the operation knob 4 is pressed with a finger, the operation knob 4 moves downward against the elasticity of the spring to operate the switch.

  When the exterior member 6 is made of a material having high hardness such as acrylic resin, plated product, aluminum, etc., the operation knob 4 usually made of ABS (acrylonitrile / butadiene / styrene) or POM (polyacetal) and the exterior member 6 are rubbed abnormally. The operation knob 4 is positioned by the panel 5 in order to prevent noise and stacking (sticking) from occurring, and the hole 6a of the exterior member 6 and the body 4a of the operation knob 4 as shown in FIG. A large clearance was provided between the two.

  In the conventional electronic device operation knob mounting structure shown in FIGS. 2 and 3, the paint color of the panel or the like is contrasted with the bright color such as silver, for example. If the color is dark, such as black, the paint color of the panel 5 that is visible between the hole 6a of the exterior member 6 and the body 4a of the operation knob 4 from the direction indicated by the arrow B in FIG. Was hurting.

In the operation panel disclosed in Japanese Patent Application Laid-Open No. 11-306903, the operation button 13 is positioned at a position that exactly fits the button hole 11a of the exterior cover 11. In this operation panel, the frame 12 (corresponding to the panel 2 in FIG. 1) cannot be seen from between the operation button 13 and the button hole 11a of the outer cover 11. However, as described above, if the hardness of the operation button 13 and the exterior cover 11 are different, one of them is worn and the above-described failure occurs.
JP-A-11-306903, paragraph 0023, FIG.

  The present invention has been made in view of the above points, and the object of the present invention is to provide an excellent appearance, and even when the hardness of the exterior member and the operation knob is different, the operation knob and the exterior member are rubbed abnormally. An object of the present invention is to provide an operation knob mounting structure for an electronic device that prevents generation of sound and occurrence of stacking (adhesion).

In the electronic device knob mounting structure according to the present invention, the exterior member is covered with an exterior member, and the body of the operation knob, the surface of which forms a pressing surface, is protruded from the respective holes provided in the panel and the exterior member. In a knob mounting structure of an electronic device in which a flange formed around the lower portion of the part is locked to a peripheral edge of the hole of the panel, and the protruding amount of the body part from the hole of the exterior member is regulated , The material is harder than the operation knob, and a step is provided in the body portion, and the outer periphery of the flange side portion is closely fitted with the hole of the panel in a sliding state from the step to follow the panel surface of the operation knob. Positioning in the direction, the outer diameter dimension of the portion closely fitting with the hole of the panel is made larger than the inner dimension of the hole of the exterior member, and the gap between the body portion and the hole of the exterior member is more I can't see the panel Unishi, and in which the gap was the size of sufficient said that the operating knob and the package member is not in contact.

  According to the knob mounting structure of the electronic device of the present invention, the operation knob and the exterior member rub against each other even when the exterior member and the operation knob have different hardness, and abnormal sound is generated or the stack (adhered) Is prevented from occurring.

The best mode for carrying out the present invention will be described below with reference to examples. FIG. 1 is a sectional view showing an operation knob mounting structure for an electronic apparatus according to the present invention. The exterior member 3 is put on the outside of the panel 2 shown in the figure, and the body 1a of the operation knob 1 whose surface forms the pressing surface 1b is projected from the hole 2a of the panel 2 and the hole 3a of the exterior member 3,
A flange 1d formed around the lower portion of the body portion 1a of the operation knob 1 is locked to the periphery of the hole 2a of the panel 2, and the amount of protrusion from the hole 3a of the exterior member 3 of the body portion 1a of the operation knob 1 is restricted. The On the lower side of the operation knob 1, a spring for biasing the operation knob 1 upward and a switch mounted on a printed circuit board are arranged, but the illustration is omitted in FIG. When the pressing surface 1b of the operation knob 1 is pressed with a finger, the operation knob 1 is moved down against the elasticity of the spring to operate the switch.

  1 is a cross section in the longitudinal direction of the rectangular operation knob 1, but the cross section in the short direction has the same shape as that in FIG. 1, and the cross section in the long direction will be described below. The cross section is the same.

The body portion 1a of the operating knob 1 and step 1c is provided, the outer diameter is slightly smaller operating knob 1 than the inner dimension of the hole 2a of the panel 2 in parts of the lower side in the drawing of the step 1c, the panel 2 Is positioned in the hole 2a.

  The outer diameter dimension of the upper portion of the step 1 c in the figure is considerably smaller than the inner dimension of the hole 3 a of the exterior member 3, and a sufficient clearance is secured between the body portion 1 a and the exterior member 3. The dimension “a” below the step 1 c of the body portion is larger than the inner dimension “b” of the hole 3 a of the exterior member 3. Therefore, the panel 2 cannot be seen from the clearance between the body portion 1 a of the operation knob 1 and the exterior member 3.

  Thus, since the panel cannot be seen through the gap between the operation knob and the hole of the exterior member, the paint color of the panel and the operation knob is different from that of the bright color such as silver. Even if it is a dark color such as contrasting black, the aesthetic appearance is not impaired.

  And even if the hardness of the exterior member and the operation knob is different, a large clearance can be secured between the exterior member and the operation knob, so that abnormal noise is generated due to friction between the exterior member and the operation knob, or stacking occurs. Is prevented.

  The embodiment is configured as described above, but the invention is not limited thereto. For example, the cross section of the operation knob is not limited to a rectangle, and may be a square or a circle.

It is sectional drawing which shows the operation knob attachment structure of the electronic device of this invention. It is a front view which shows the example of the operation knob attachment structure of the conventional electronic device. It is AA sectional drawing in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation knob, 1a trunk | drum, 1b Press surface, 1c Level difference, 1d Flange 2 Panel, 2a hole 3 Exterior member, 3a hole 4 Operation knob, 4a Body part, 4b Press surface, 4c Flange 5 Panel, 5a hole 6 Exterior member 6a hole

Claims (1)

An exterior member is covered on the outside of the panel, and the body portion of the operation knob whose surface forms a pressing surface is protruded from each hole provided in the panel and the exterior member, and a flange formed around the lower portion of the body portion is In a knob mounting structure of an electronic device that is locked to a peripheral edge of a hole in the panel and the protruding amount of the body portion from the hole of the exterior member is regulated, the exterior member is made of a material having a higher hardness than the operation knob, A step is provided in the body portion, and the outer periphery of the flange side portion from the step is closely fitted with the hole of the panel in a sliding state to perform positioning in the direction along the panel surface of the operation knob, and the hole of the panel The outer diameter dimension of the portion to be tightly fitted is made larger than the inner dimension of the hole of the exterior member so that the gap between the trunk portion and the hole of the exterior member is not more visible , and the gap is Operation knob Sufficient size and the knob mounting structure of the electronic device will not be the exterior member are in contact.

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