JP3843148B2 - Electric device operation lever slide device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a slide device for an operation lever of a slide type electric part attached to an electric device, and more particularly, to a slide type switch attached to a telephone or an audio device or an operation lever in a variable resistor. The present invention relates to a device that slides in a direction.
[0002]
[Prior art]
For example, as shown in FIGS. 5 and 6, the slide device for the slide type switch operating lever in the telephone is provided with a long hole B in the sliding direction in the case A, and is operated so as to pass through the long hole B. The lever C is provided and the tip end D protruding from the long hole B can be slid to the side along the long hole B by the fingertip, and the inner end drive portion E of the operating lever C is variable. A hook-like barrier H that closes the long hole B is engaged with the passive part G of the electric component F such as a resistor and close to the tip of the operating lever C to prevent dust from the long hole B and to prevent static electricity. Are provided close enough to contact the inner surface of the case A.
[0003]
[Problems to be solved by the invention]
According to the conventional structure, it is necessary to provide the operation lever C with a large barrier H that is about twice as long as the stroke, and because the sliding area is large, the sliding surface is lubricated to obtain smooth sliding. It was necessary to take special measures such as applying a material or mirror finishing the rubbing surface.
[0004]
Accordingly, an object of the present invention is to provide a slide device which has an effective dustproof effect and improved electrostatic pressure resistance despite the use of a small-sized operation lever having a simple structure without a barrier. The object of the present invention is to provide an inexpensive slide device that allows the operation lever to slide lightly and smoothly.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a plate-shaped eaves wall that also serves as a guide and is longer in the sliding direction than the long hole inwardly near the long hole through which the operating lever slides, and the lever support edge is the long hole Are provided on one bottom wall of the split-type case so as to extend to a height position overlapping with the upper side of the elongated hole, and both ends of the eaves wall in the sliding direction are arranged in the two directions. A U-shape that is connected to one side wall of the split-type case and has a U-shape in plan view. On the other hand, the operating lever has an inverted U-shape that can slide while straddling the edge of the lever support on the wall. Or a crooked-shaped bent portion , and a second collar wall that is longer in the sliding direction than the collar wall is inward of the collar wall of the case in a state parallel to the elongated hole. Extends to the other bottom wall of the split-type case to a height that overlaps the top side of the wall. While standing on so that, Ru said second said sliding direction ends of碍壁by concatenating the other side wall of the two split mold of the case and the main characterized in that a U-shaped plan Tei.
[0006]
It should be noted that a substantially semi-cylindrical protrusion is placed on one of the rubbing surfaces of the wall and the operating lever so that the tip and the corresponding surface slide in line contact, or A substantially hemispherical protrusion is brought into contact with the inner surface of the bent portion of the operating lever that rubs against the wall so that the tip and the corresponding surface slide with each other in a point contact. Slide it as it is.
[0007]
With the above configuration, electrostatic discharge to the control semiconductor integrated circuit in the case from the outside through a long hole is prevented by a labyrinth-like creeping surface formed by a plate-like wall and this wall, a bent portion of an operation lever, and the like. The semiconductor integrated circuit is protected from electric shock.
[0008]
The straight lever-supporting edge on the wall guides the operating lever, and the projection formed on any one of them makes a light slide operation possible.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0010]
The illustrated embodiment is an embodiment in which the present invention is applied to a slide-type variable resistor of a telephone. Examples of telephones to be applied include two cases comprising a lower case 1a and an upper case 1b as shown in the figure. In addition to notching the side wall edge of the lower case 1a in the split-type plastic case 1 to provide a long hole 2, a sliding variable resistor as an electrical component 3 is provided inside the long hole 2 and the passive part 4 is long. The printed circuit board 5 is fixed to the printed circuit board 5 so as to face the hole 2, and other electronic components such as a semiconductor integrated circuit (not shown) are mounted on the printed circuit board 5. 3 with the tip knob 7 protruding from the long hole 2 penetrating through the operation lever 6 being provided so that it can be slid sideways along the long hole 2 by the fingertip. The drive unit 8 receives the electric parts 3. It engages the section 4, has by sliding laterally along the elongated hole 2 by the finger tip as needed knob 7 of the operating lever 6, to adopt a type as to adjust or switch the electrical components 3.
[0011]
As a configuration of the present invention for the above type, a lever supporting end edge 10 formed with a plate-like flange wall 9 serving as a guide, which is larger than the long hole 2 and inwardly close to the long hole 2, faces upward. In addition to being erected integrally with the bottom wall of the lower case 1a in a state parallel to the hole 2, the operating lever 6 is slid while striding over the lever support edge 10. A bent U-shaped or U-shaped bent portion 11 is formed, and a plate-like second rib wall 12 is provided in a lever-supporting manner so as to be inwardly close to the rib wall 9 and alternately downward from the rib wall 9. Provided integrally with the upper case 1b under the condition of approaching the back surface of the bent portion 11 of the working edge 10.
[0012]
The sliding surface between the wall 9 and the bent portion 11 of the operating lever 6 is provided with a substantially semi-cylindrical protrusion 13 in one of the sliding directions as shown in FIG. 1, FIG. 2, or FIG. It is provided to slide under line contact, or a plurality of substantially hemispherical protrusions 13 are provided on the inner surface of the bent portion 11 of the operating lever 6 as shown in FIG. Thus, it is desirable to reduce the frictional resistance during the sliding operation, and the edge of the wall 9 and the edge of the second wall 12 are formed in a substantially semi-cylindrical shape even in this portion. It is better to reduce frictional resistance.
[0013]
The edge of the wall 9 and the edge of the long hole 2 are appropriately overlapped as shown by the symbol h in FIG. 1, but both ends of the wall 9 are on the side walls of the case 1a as shown in FIG. It is formed in a U-shape so as to be connected to improve the obstacle effect, and the second flange wall 12 is also connected to the side wall of the case 1b as shown in FIG. It is desirable to form a U shape that is one size larger than that to exert a double obstacle effect.
[0014]
【The invention's effect】
As described above, according to the present invention, the following various effects can be obtained.
[0015]
a. The operation lever 6 having the inverted U-shaped or hook-shaped bent portion 11 is guided while being slid over the edge of the plate-like wall 9 and slid to the side. In addition to being able to lightly slide under the rubbed area, the formation of a labyrinth-like creeping surface by the bent portion 11 of the operating lever 6 and the eaves wall 9 reduces the electrostatic withstand voltage from the long hole 2 to the internal electronic components. Therefore, the electric shock due to the electrostatic discharge phenomenon can be prevented, and damage or destruction of the semiconductor integrated circuit can be surely prevented.
[0016]
b. Since the operating lever 6 having the bent portion 11 is guided and slid in the bent portion 11 while striding over the edge of the plate-like wall 9, both the sliding function and the electrostatic withstand voltage increasing function are provided. It can be easily achieved under a simple single structure.
[0017]
c. Since the eaves wall 9 larger than the long hole 2 and the second eaves wall 12 are provided inside the eaves wall 9, electric shock due to electrostatic discharge phenomenon is more reliably prevented under the double eaves wall. The
[0018]
d. Since a substantially semi-cylindrical or substantially hemispherical projection 13 is provided on the rubbing surface between the bent portion 11 and the flange wall 9 of the operating lever 6, a lubricant is applied to the rubbing portion, or the rubbing portion is The slide operation can be performed lightly with a simple structure without taking measures such as mirror finishing.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of a slide device showing an embodiment of the present invention.
FIG. 2 is a perspective view showing the upper case of the apparatus of FIG.
FIG. 3 is a longitudinal side view of only a main part of another embodiment.
FIG. 4 is a longitudinal side view of only an operation lever according to still another embodiment.
FIG. 5 is a longitudinal side view illustrating a conventional slide device.
6 is a perspective view showing the apparatus of FIG. 5 with the upper half of the case removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Long hole 3 Electric component 4 Passive part 6 Operation lever 7 Knob 8 Drive part 9 Girder wall 10 Lever support edge 11 Bending part 12 Second girder wall 13 Protrusion

Claims (3)

In addition to providing a long hole (2) on the side wall of the split-type case (1), the electric part (3) is placed inside the long hole (2) and the passive part (4) faces the long hole (2). In contrast to this, the elongated hole (2) has a tip (7) protruding through the operating hole (6) of the electrical component (3) and protruding from the elongated hole (2). The drive part (8) in the operation lever (6) is engaged with the passive part (4) of the electrical component (3) while being provided so as to be slidable laterally along (2). A slide device of the type adapted to adjust or switch the electrical component (3) by sliding the lever (6) to the side along the long hole (2),
Inside the case (1) close to the long hole (2), a plate-shaped eaves wall (9) serving as a guide that is longer in the sliding direction than the long hole (2) is provided with a lever supporting edge (10). Is extended to a height position overlapping with the upper side of the long hole (2) on the bottom wall of one (1a) of the split-type case (1) in a state parallel to the long hole (2). and with upright, and the碍壁(9) wherein the sliding direction across the two split mold of the case (1) of one continuously connected to the side wall of (1a) U-shaped plan configuration of the,
The operating lever (6) is formed with an inverted U-shaped or hook-shaped bent portion (11) that can slide while straddling the lever supporting edge (10) ,
Further, a second rib wall (12) longer in the sliding direction than the rib wall (9) is disposed inward of the rib wall (9) of the case (1) in a state parallel to the long hole (2). Originally, the second wall is erected on the bottom wall of the other (1b) of the split-type case (1) so as to extend to a height position overlapping the upper side of the wall (9). A sliding device for a lever for operating an electric component, characterized in that both ends in the sliding direction of (12) are connected to the side wall of the other (1b) of the split-type case (1) in a U shape in plan view . The electrical component according to claim 1, wherein a substantially semi-cylindrical protrusion (13) extending in the sliding direction is provided on either the flange wall (9) or the inner surface of the bent portion (11) of the operating lever (6). Operation lever slide device.   The slide device for an electric component operating lever according to claim 1, wherein a substantially hemispherical protrusion (13) is provided on an inner surface of the bent portion (11) of the operating lever (6).

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