JP2017188240A - Push-button switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that, in a conventional push-button switch, when operating the push-button switch, a through-hole provided in a device body is rubbed with a push-button that passes the through-hole and moves, and uncomfortable sound is generated.SOLUTION: A push-button switch comprises: a switch that is mounted on a main body case; a first through-hole that is formed in the main body case; a second through-hole which is formed in the main body case and coaxially communicated with the first through-hole and of which the diameter is larger than that of the first through-hole; and a push-button which is brought into a state where the push-button is loosely fitted into the first and second through-holes, in a freely movable manner and operates the switch. The push-button includes: a push-down operation part which performs a pressing operation of the push-button while being loosely fitted with the first through-hole; a pressing part which performs a pressing operation of the switch; and a collar-shaped flange part which is formed in an intermediate part between the pressing part and the push-down operation part in a radial direction and brought into a state where the flange part is loosely fitted with the second through-hole. The push-down operation part has spacing S1 to an inner peripheral surface of the first through-hole, and the collar-shaped flange part has spacing S2 to an inner peripheral surface of the second through-hole. The spacing S1 and the spacing S2 are set to a dimensional relationship of spacing S1>spacing S2.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a pushbutton switch in which a pushbutton moves through a through hole provided in the apparatus main body.

  As a method for inputting information from the outside to a certain device, for example, a push button switch is proposed in which a through hole is provided in the device body and a push button that moves through the through hole is arranged.

JP 2001-351453 A

  The conventional push button switch has a problem in that when the push button switch is operated, an unpleasant sound is generated due to rubbing between a through hole provided in the apparatus main body and a push button moving through the through hole. More specifically, when the apparatus main body is a resin molded product for mass production, a parting portion is formed on the ridge line of the through hole provided in the apparatus main body due to the structure of the molding die. In this parting part, a sharp ridgeline is formed and burrs are likely to be generated. When the sharp ridgeline or burrs rub against the surface of the push button, an unpleasant sound may be generated. In addition, when a resin containing glass fiber or the like is used as the material of the main body case, unpleasant noise is likely to occur because the rigidity of the burr increases. Alternatively, when not only the main body case but also the push button is a molded product, sharp ridges and burrs are generated in the split part of the push button, so that the ridge line and burrs of the push button are the surface of the through hole, or the ridge line of the through hole, Or, an unpleasant sound is likely to be generated by rubbing against a burr of a through hole. Also, when the surface of the push button is plated, or when the entire push button is made by metal cutting, the hardness of the ridge line and burr of the push button is much higher than the surface hardness of the through hole. There are also problems that an unpleasant sound is likely to be generated when rubbing, and that the ridgeline and burrs of the push button bite into the surface of the through hole. Further, if the push button is pressed against the surface of the through hole by pushing the push button diagonally, the above problem is likely to occur.

  The present invention has been made to solve such a problem, and an object thereof is to reduce unpleasant sounds generated between the push button and the through hole without increasing the number of parts. Another object of the present invention is to reduce the catch of the push button and the through hole.

The pushbutton switch according to the present invention includes a switch mounted on the main body case, a first through hole formed in the main body case corresponding to the switch, and coaxially formed with the first through hole formed in the main body case. A second through hole that is in communication and larger in diameter than the first through hole, and a push button that is slidably fitted in the first and second through holes to operate the switch, the push button having an outer end A push-down operation portion that is formed in a portion and is operated to press the push button in a loosely fitted state with the first through hole, a press portion that is formed in an inner end portion and that pushes the switch, and the press portion and the push-down operation. A flange-shaped flange portion that is formed in a radial direction at an intermediate portion with the second through hole and is loosely fitted to the second through hole, and the push-down operation portion is spaced from an inner peripheral surface of the first through hole. S1 and the flange-shaped flange portion has a second through hole. Has an inner peripheral surface and the clearance S2 of the hole, it said the gap S1 and the clearance S2, is what is set in the dimensional relation S1> S2.

  According to the push button switch of the present invention, since the through hole and the push button can be prevented from directly sliding without increasing the number of parts, the push button and the through hole are slid without increasing the production cost and the assembly cost. Generation of unpleasant sound can be prevented, and catching between the push button and the through hole can be prevented.

It is a perspective view which shows the structure of the pushbutton switch which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the cross-sectional shape of the pushbutton switch main body case which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows how to make the pushbutton switch main body case which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows how to make the pushbutton switch main body case which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure of the pushbutton switch which concerns on Embodiment 1 of this invention. FIG. 6 is a partial cross-sectional view showing an enlarged part of the push button switch shown in FIG. 5. It is explanatory drawing explaining the effect of the pushbutton switch which concerns on Embodiment 1 of this invention. It is the elements on larger scale of FIG. It is a fragmentary sectional view which shows the structure of the pushbutton switch which concerns on Embodiment 2 of this invention. It is explanatory drawing which expands and shows a part of pushbutton switch which concerns on Embodiment 2 of this invention. It is explanatory drawing which expands and shows a part of pushbutton switch which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the pushbutton switch which concerns on Embodiment 3 of this invention. It is a top view which shows the structure of the pushbutton switch which concerns on Embodiment 3 of this invention. It is a top view which shows the pushbutton switch which concerns on Embodiment 4 of this invention. It is a perspective view which shows the structure of the pushbutton switch which concerns on Embodiment 5 of this invention. It is the perspective view which looked at the pushbutton switch concerning Embodiment 5 of this invention from another direction. It is sectional drawing which shows the structure of the pushbutton switch which concerns on Embodiment 5 of this invention. It is sectional drawing which shows the structure of the pushbutton switch which concerns on Embodiment 6 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol shows the same or an equivalent part between each figure.

Embodiment 1 FIG.
1 is a perspective view showing a pushbutton switch according to Embodiment 1 of the present invention, FIG. 2 is an explanatory view showing a cross-sectional shape of a main body case of the pushbutton switch, and FIGS. 3 and 4 are explanatory views showing how to make a main case of the pushbutton switch. 5 is a cross-sectional view showing the configuration of the push button switch, FIG. 6 is an enlarged partial view of FIG. 5, FIG. 7 is an explanatory view for explaining the effect of the push button switch, and FIG. 8 is a partial enlarged view of FIG.

Based on FIGS. 1-6, the structure of the pushbutton switch which concerns on Embodiment 1 is demonstrated.
In FIGS. 1, 2, and 5, a push button switch is a main body case 1 formed of a resin containing glass fiber, a switch 12 mounted on a switch mounting board 11 of the main body case and connected to an electronic circuit, and operates this switch. The push button 3 is configured.
The main body case 1 is formed with a first through hole H1 and a second through hole H2 that face the switch 12 and penetrate the main body case 1.
The push button 3 is loosely guided in the first through hole H1 and the second through hole H2 as indicated by an arrow A in FIG. 1, and moves in the axial direction to open and close the switch 12 during the pressing operation.
The second through hole H2 is formed to communicate with the first through hole H1 coaxially with the annular convex portion 6 (6a, 6b) formed at the hole edge of the first through hole H1 as described later. The diameter is larger than that of the first through hole H1.
Further, the push button 3 is loosely fitted in the first through hole H1, and a push-down operation part 4 that is a head part of an outer end part that pushes the push button, and a push part 7 that is an inner end part that pushes the switch 12; It is a resin molded product formed by a flange-shaped flange portion 5 that is formed in a radial direction at an intermediate portion between the pressing portion and the push-down operation portion 4 and loosely fitted in the second through hole H2 of the annular convex portion 6. . Reference numerals 13a and 13b denote stoppers that are held by a support structure (not shown) in order to restrict the range in which the push button 3 moves.

Next, how to make the main body case 1 will be described with reference to FIGS.
3 and 4, 8 is the upper side of the mold for resin molding, 9 is the lower side of the mold for resin molding, and 10a, 10b, 10c, and 10d are mold part portions of the mold.
A main body case 1 in FIG. 1 is a part produced by a resin molding method.
The resin molding method is a manufacturing method suitable for mass production, and is a method for producing a part by pouring a resin melted at a high temperature into a metal mold (hereinafter referred to as a mold). For example, the main body case 1 has the cross-sectional shape shown in FIG. 2. In order to produce such a shape by a resin molding method, as shown in FIG. 3, an upper mold 8 and a lower mold are used. Use type 9.
The upper mold 8 and the lower mold 9 are each provided with irregularities corresponding to the shape of the main body case 1, and the upper mold 8 and the lower mold 9 are combined to form respective surfaces. When the provided irregularities are combined into one, a space having the same shape as the main body case 1 is formed. When resin melted at a high temperature is poured into this space and cooled, the resin hardens and the shape of the main body case 1 is completed.

Thereafter, as shown in FIG. 4, the upper mold 8 and the lower mold 9 are separated, and the main body case 1 is taken out. At this time, the portions (parting parts) 10a, 10b, 10c, and 10d that are the joints of the upper die 8 and the lower die 9 become sharp ridge lines, and these ridge lines are called mold part.
In addition, 10a, 10b makes a main body case inner side hole edge part of the 1st through-hole H1 a ridgeline.
In FIG. 3, if the combination of the upper mold 8 and the lower mold 9 is not good, a gap is formed in the joint (parting portion) between the upper mold 8 and the lower mold 9. In some cases, the resin flows out into the gaps to form thin film-like projections. This thin protrusion is a burr generated in the parting portions 10a, 10b, 10c, and 10d of the main body case.

Next, based on FIGS. 5 and 6, the loosely fitted state of the push button 3 with respect to the first through hole H1 and the second through hole H2, that is, the loosely fitted state of the push-down operation portion 4 and the flange-like flange portion 5 (the dimensional relationship of the gap). ).
As shown in FIG. 6, the push-down operation unit 4 has a clearance dimension S 1 (S 1 a, S 1 b) of the clearance 15 and is loosely fitted in the first through hole H 1, and the flange-shaped flange portion 5 has a clearance dimension S 2 of the clearance 16. (S2a, S2b) and are loosely fitted to the annular convex portion 6.
The dimensional relationship is set so that S1> S2.
That is, since the gap 15 between the push-down operation part 4 and the inner peripheral surface of the first through hole H1 is set larger than the gap 16 between the flanged flange part 5 and the inner peripheral surface of the second through hole H2, As will be described later, the generation of a rubbing sound when the push button 3 is operated is prevented.

In FIG. 6, 14 a and 14 b are the split portions of the resin-molded push button 3, and L 1 a and L 1 b are steps L 1 between the flange-shaped flange portion 5 and the annular convex portion 6, which are generally zero or the flange-shaped flange portion 5. That is, the dimensional relationship is such that the parting portions 14 a and 14 b of the push button 3 protrude from the annular convex portion 6. That is, the flange-shaped flange portion 5 has an annular convex portion 6a at the inner end portion.
, 6b is formed so as to extend to the inside of the main body case 1 from the projecting tip portion, and a push button mold part 14a is formed on a ridge formed by the inner end surface and the outer peripheral surface of the extended portion. 14b is set.

Next, the operation of the push button will be described with reference to FIGS.
In FIG. 5, when the operator presses the push button push-down operation unit 4 from the outside of the main body case 1, the push button 3 pushes the switch 12 by the inward movement of the push unit 7, and information is input. Thereafter, when the push button 3 is further pushed in, the flange-shaped flange portion 5 comes into contact with the stoppers 13a and 13b, and the movement of the push button 3 is stopped.
At this time, the parting portions 10a and 10b of the main body case 1 are arranged facing the inner side of the main body case 1 so that the operator's finger does not come into contact with a sharp ridgeline or burr.
Thereafter, when the operator releases his / her finger from the push button 3, the push button 3 is configured to return to a position before being pushed into the operator by a force such as a spring (not shown).

  In FIG. 6, when the operator pushes the push button 3 obliquely in the direction of arrow B in the figure, the push button 3 once moves in the left direction in the figure, but the gap 16 is configured to be narrower than the gap 15. Therefore, the flange-like flange portion 5 hits the annular convex portion 6 at the gap portion 16 before the parting portion 10a of the main body case 1 comes into contact with the push-down operation portion 4 at the gap portion 15. Since it stops, the parting part 10a of the main body case 1 does not come into contact with the push-down operation part 4 of the push button, and even if the push button 3 is pushed in the direction of the switch 12 in this state, the part part 10a and the push-down operation part There is an effect that an unpleasant sound can be prevented without rubbing 4.

Further, at this time, the parting portion 14a of the push button 3 is substantially the same as the annular convex part 6 or is configured to protrude by the step L1a from the annular convex part 6, so that the parting part 14a is annular. Since it does not contact with the convex part 6a, it is possible to prevent the mold part 14a from being caught and caught in the annular convex part 6a.
This is effective even when the push button 3 is plated, or when the push button 3 is manufactured by metal cutting and the part of the parting portion 14a is finished with a sharp ridgeline.
Further, when the push button 3 moves to the right in the figure, the gap 16 is configured to be narrower than the gap 15 in the same manner as described above, and the mold part 14b of the push button 3 is the same as the annular convex part 6b. Alternatively, since it is configured to protrude only by the step L1b, the mold part 10b of the main body case 1 does not come into contact with the push-down operation part 4 of the push button, and the mold part 14b of the push button 3 is formed in the annular convex part 6b. The same effect as described above is obtained.

The effect of Embodiment 1 is demonstrated based on FIG.
In FIG. 7, L2a and L2b are steps L2 between the flange-shaped flange portion 5 and the annular convex portions 6a and 6b, and the annular convex portions 6a and 6b are in a relationship protruding from the flange-shaped flange portion 5.
In FIG. 8, an arrow C indicates the direction of force, and an angle D is an angle between the flange-shaped flange portion 5 and the annular convex portion 6b.
FIG. 7 is a modified example in which the positions of the parting portions 14a and 14b of the push button 3 are arranged lower than the annular convex portions 6a and 6b like steps L2a and L2b, unlike FIG.
In the case of such an arrangement, the operator applies force in the direction of the arrow C in the figure with the push button 3 raised to the right as shown in FIG. 8 (the angle D is slightly smaller than 90 degrees). If the pressing operation is performed while being hung, it is desirable to avoid the parting portion 14b from being caught by the annular convex portion 6b. However, even if it is the structure of FIG. 8, if the parting part 14b is made into a curved surface (curved surface part) or a chamfered shape (chamfered part) by cutting, the biting into the annular convex part 6b can be prevented.

Embodiment 2. FIG.
FIG. 9 is a partial cross-sectional view showing the configuration of the pushbutton switch according to Embodiment 2 of the present invention, and FIG. 10 shows the periphery of the parting portion 14b of the pushbutton when the pushbutton 3 is tilted to the right in FIG. 11 is a partially enlarged view, and FIG. 11 is a partially enlarged view showing the periphery of the parting portion 14b of the push button when the push button 3 is inclined to the left shoulder in FIG.

A configuration of the pushbutton switch according to the second embodiment will be described with reference to FIGS.
9 to 11, the pushbutton switch according to the second embodiment has a gap 16 between the flange-shaped flange portion 5 and the annular convex portions 6a and 6b rather than the gap 15 between the first through hole H1 and the push-down operation portion 4. Although it is the same as that of the first embodiment in that it is configured to be narrow (S1> S2), the thickness of the flange-shaped flange portion 5 is shorter than the height of the annular convex portion 6.
In addition, push button mold dividing portions 14 a and 14 b are set on a ridge formed by the outer peripheral surface of the flange-shaped flange portion 5 and the end surface facing the inner surface of the main body case 1.
At the root portion (inner surface of the main body case) between the annular convex portions 6a and 6b facing the mold dividing portions 14a and 14b of the push button 3, the rubbing operation by the push button mold dividing portions 14a and 14b corresponding to the ridgeline is avoided. A recess 19 (19a, 19b) is provided.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

In FIG. 9, when the push button 3 is pressed rightward or leftward, the gap 15 between the second through hole H2 and the push button pressing operation part 4 is interposed between the annular convex parts 6a, 6b and the flanged flange part 5. Since the gap 16 of the push button is narrowed, the flanged flange portion 5 hits the annular convex portion 6a or 6b before the push button pressing operation portion 4 contacts the surface of the first through hole H1. .
At this time, if the recesses 19a and 19b are not arranged in the root portions of the annular convex portions 6a and 6b in FIG. 9, and the shape is the same as the root portions of the annular convex portions 6a and 6b in FIGS. The parting portions 14a and 14b of the push button 3 abut against the root portions of the annular convex portions 6a and 6b and interfere with each other. However, in the second embodiment, this interference can be avoided by providing the recesses 19a and 19b.

Further, in FIG. 10, the push button 3 is inclined to the right shoulder, and in this state, when the push button 3 is pushed in while applying a force in the direction of arrow E in the figure, the parting portion 14b of the push button 3 is an annular convex portion. There is no contact with 6b and no catching occurs.
On the other hand, when the push button 3 is inclined to the left shoulder as shown in FIG. 11 and the push button 3 is pushed in while applying a force in the direction of arrow F in the figure, the parting portion 14b of the push button 3 is moved to the annular convex portion 6b. Although the contact is made, the angle G between the mold part 14b of the push button 3 and the annular convex part 6b is small, so that the mold part 14b of the push button 3 is less likely to bite into the annular convex part 6b, thereby reducing the occurrence of catching. it can. Further, when the pushed push button 3 returns to the original state, no force F is generated, so that the parting portion 14b of the push button 3 does not bite into the annular convex portion 6b, and the catch does not occur.

Embodiment 3 FIG.
12 is a perspective view showing a pushbutton switch according to Embodiment 3 of the present invention, and FIG. 13 is a plan view showing the configuration of the pushbutton switch according to Embodiment 3. In FIG.

The configuration of the pushbutton switch according to the third embodiment will be described with reference to FIGS.
12 and 13, the annular convex portion 6 is formed in a square frame shape, and a plurality of small protrusions 20 a, 20 b, and 20 c are formed on the inner peripheral surface thereof so as to face the square flange-shaped flange portion 5. , 20d, 20e, and 20f are projected. As shown in FIG. 13, the gap dimension S2 between the tip end surface of the protrusion and the flange-shaped flange portion is narrower than the gap dimension S1 between the first through hole H1 and the push-down operation portion 4 as in the first embodiment. (S1> S2).
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In FIG. 13, when the push button 3 is pressed in the vertical and horizontal directions in the figure, the gap dimension S2 between the flange-shaped flange portion 5 and the projections 20a, 20b, 20c, 20d, 20e, and 20f is not shown in FIG. Since it is configured to be narrower than the gap between the first through hole H1 and the push button pressing operation portion 4, the flanged flange portion 5 is formed before the first through hole H1 and the push button pressing operation portion 4 come into contact with each other. And the projections 20a, 20b, 20c, 20d, 20e, and 20f come into contact with each other. Therefore, there are the same effects as in the other embodiments described above.

Embodiment 4 FIG.
FIG. 14 is a plan view showing a pushbutton switch according to Embodiment 4 of the present invention.
FIG. 14 corresponds to a modification of the third embodiment, but divides the annular convex portion 6 and makes small projections 20a, 20b, 20c, 20d, which are in contact with the outer peripheral surface of the flange-shaped flange portion 5. 20e and 20f are erected on the inner surface of the main body case 1, and the clearance dimension S2 between the tip end surface of the protrusion and the flange-shaped flange portion 5 is the same as in the first embodiment, and the first through hole H1 and the push-down operation portion. It is comprised so that it may become narrower than the clearance gap between 4 (S1> S2).
In this case, it can be limited to only the small protrusions 20a, 20b, 20c, 20d, 20e, and 20f instead of the annular convex portion 6, and since it may be a divided shape, the effect of narrowing the size management range is also obtained.

Embodiment 5. FIG.
15 is a perspective view showing a configuration of a pushbutton switch according to Embodiment 5 of the present invention, FIG. 16 is a perspective view of the pushbutton switch viewed from another direction, and FIG. 17 is a main body case in FIGS. 1 is a partial cross-sectional view showing a state where a push button 3 is assembled to 1. FIG.

The configuration of the pushbutton switch according to Embodiment 3 will be described with reference to FIGS.
15 and 16, the push button 3 according to the fifth embodiment is obtained by improving the flange-shaped flange portion 5 at the intermediate portion between the pressing portion 7 and the push-down operation portion 4.
The flange-shaped flange portion 5 is provided with a plurality of recessed portions 21a and 21b on one surface facing the inner surface of the main body case 1, and the main body case 1 is loosely fitted in the recessed portions 21a and 21b so as to face the recessed portion. A plurality of convex portions 6a1, 6b1 are provided.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

With this configuration, when the push button 3 is inserted into the first through hole H1 of the main body case 1 and assembled to the main body case 1, the plurality of convex portions 6a1 and 6b1 have gaps 16 in the concave portions 21a and 21b. As a result, the assembly of the push button 3 to the main body case 1 is completed.
The gap dimension S3 of the gap 16 between the convex parts 6a1, 6b1 and the concave parts 21a, 21b is configured to be smaller than the gap dimension S1 of the gap 15 between the first through hole H1 and the push-down operation part 4. Yes. That is, the gap dimension S1 of the gap 15 and the gap dimension S3 of the gap 16 are set in a dimensional relationship of S1> S3.

  In FIG. 17, when the push button 3 is pressed rightward or leftward in the figure, the gap dimension S3 between the convex portions 6a1, 6b1 and the concave portions 21a, 21b is between the first through hole H1 and the push-down operating portion 4. Since it is configured to be smaller than the gap, the convex portion 6a1 or the convex portion 6b1 comes into contact with the flanged flange portion 5 before the first through hole H1 and the push-down operation portion 4 come into contact with each other. An effect of preventing the first through hole H1 and the push button pressing operation portion 4 from contacting each other can be obtained.

Embodiment 6 FIG.
FIG. 18 is a sectional view showing the structure of a pushbutton switch according to Embodiment 6 of the present invention.
A pushbutton switch according to the sixth embodiment will be described with reference to FIG.
The push button switch in FIG. 18 corresponds to a modification of the fifth embodiment.
In the flange-shaped flange portion 5 of the fifth embodiment, the recessed portions 21a and 21b are provided. However, in the sixth embodiment, a plurality of third holes penetrating from one surface to the other surface in place of the recessed portion. Through holes H3a and H3b are provided, and the convex portions 6a2 and 6b2 of the main body case 1 are loosely fitted into the third through holes H3a and H3b.
The convex portions 6a2 and 6b2 have heights protruding from the third through holes H3a and H3b when the push button switch is assembled. In addition, recesses 19a, 19b, 19c, and 19d are formed at the bases of the protrusions 6a2 and 6b2. In addition, 14a, 14b, 14c, 14d, 14e, 14f are the parting parts of a push button. In addition, since the other structure is the same as Embodiment 1, description is abbreviate | omitted.

Further, the gap dimension S3 of the gap between the convex portions 6a2, 6b2 and the third through holes H3a, H3b is configured to be smaller than the gap dimension S1 of the gap between the first through hole H1 and the push-down operation part 4 of the push button. ing. The gap dimension S1 of the gap 15 and the gap dimension S3 of the gap 16 are set in a dimensional relationship of S1> S3.

  In FIG. 18, when the push button 3 is pressed rightward or leftward in the figure, the gap 16 between the convex portions 6 a 2 and 6 b 2 and the third through holes H 3 a and H 3 b is between the first through hole H 1 and the push-down operation portion 4. It is configured to be smaller than the gap 15. For this reason, since the convex part 6a2 or the convex part 6b2 comes into contact with the flange-shaped flange part 5 before the first through hole H1 comes into contact with the push-down operation part 4, the first through-hole H1 and the push-down operation part 4 The effect of preventing contact with is obtained.

  In the present invention, each embodiment can be appropriately modified or omitted within the scope of the invention.

1: body case, 3: push button, 4: push button push-down operation part,
5: flange shape portion of push button, 6 (6a, 6b): annular convex portion, 7: push button pressing portion,
12: switch, 14 (14a, 14b, 14c, 14d, 14e, 14f): mold part of the push button, 15: gap between the first through hole H1 and the push-down operation part 4,
16: A gap between the flange-shaped flange portion 5 and the inner peripheral surface of the second through hole H2, H1: a first through hole,
H2: second through hole, L1 (L1a, L1b): step,
L2 (L2a, L2b): step, S1: gap size of gap 15,
S2: Gap size of gap 16

The pushbutton switch according to the present invention includes a switch mounted on the main body case, a first through hole formed in the main body case corresponding to the switch, and coaxially formed with the first through hole formed in the main body case. A second through hole communicating and larger in diameter than the first through hole, and a push button that is freely fitted in the first and second through holes to operate the switch;
The push button is formed at an outer end portion, and a push-down operation portion that pushes the push button in a loosely fitted state with the first through hole; a push portion that is formed at an inner end portion and pushes the switch; and It has a flange-shaped flange portion that is formed in a radial direction at an intermediate portion between the pressing portion and the push-down operation portion and is loosely fitted with the second through-hole, and the push-down operation portion is the first through-hole. And the flange-shaped flange portion has an inner peripheral surface of the second through hole and a clearance S2, and the clearance S1 and the clearance S2 are such that the clearance S1> the clearance S2. An annular convex portion having the second through hole is formed at the hole edge portion of the first through hole, and the annular convex portion is formed on the peripheral surface of the flange-shaped flange portion, are those formed by a plurality of projections that face each other with a distance of the gap S2

The configuration of the pushbutton switch according to the fifth embodiment will be described with reference to FIGS.
15 and 16, the push button 3 according to the fifth embodiment is obtained by improving the flange-shaped flange portion 5 at the intermediate portion between the pressing portion 7 and the push-down operation portion 4.
The flange-shaped flange portion 5 has a plurality of recessed portions 21 a, 2 on one surface facing the inner surface of the main body case 1.
1 b is provided, and the main body case 1 is provided with a plurality of convex portions 6 a 1 and 6 b 1 which are loosely fitted in the concave portions 21 a and 21 b so as to face the concave portion.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

Claims (11)

A switch mounted on the main body case, a first through hole formed in the main body case corresponding to the switch, the first through hole formed in the main body case and coaxially communicating with the first through hole A second through hole having a larger diameter, and a push button which is loosely movably fitted in the first and second through holes and operates the switch;
The push button is formed at an outer end portion, and a push-down operation portion that pushes the push button in a loosely fitted state with the first through hole; a push portion that is formed at an inner end portion and pushes the switch; and It has a flange-shaped flange portion that is formed in a radial direction at an intermediate portion between the pressing portion and the push-down operation portion and is loosely fitted with the second through-hole, and the push-down operation portion is the first through-hole. And the flange-shaped flange portion has an inner peripheral surface of the second through hole and a clearance S2, and the clearance S1 and the clearance S2 are such that the clearance S1> the clearance S2. A pushbutton switch characterized by being set in a relationship.   An annular convex portion is formed at the hole edge of the first through hole, and the second through hole into which the flange-shaped flange portion is inserted is formed in the annular convex portion. The pushbutton switch according to claim 1.   3. The pushbutton switch according to claim 2, wherein a plurality of protrusions are provided on the inner peripheral surface of the annular convex portion so as to face the peripheral surface of the flange-shaped flange portion with a distance of the gap S <b> 2. Corresponding to this switch, there are provided a first through hole formed in the main body case, and a push button that is freely fitted in the first through hole to operate the switch. ,
The push button is formed at an outer end portion, and a push-down operation portion that pushes the push button in a loosely fitted state with the first through hole; a push portion that is formed at an inner end portion and pushes the switch; and An intermediate portion between the pressing portion and the push-down operation portion, and a flange-shaped flange portion formed in the radial direction in the main body case. The flange-shaped flange portion faces the inner surface of the main body case. A plurality of recesses are provided on one surface, or a plurality of third through holes penetrating from the one surface to the other surface instead of the recesses, and the inner surface of the main body case has the recesses or the third through holes. A plurality of projecting portions that are loosely fitted are erected, and the push-down operation portion has an inner peripheral surface of the first through hole and a clearance S1, and the convex portion is connected to the inner peripheral surface of the concave portion. Or having an inner peripheral surface of the third through hole and a gap S3, The push button switch, wherein the gap S1 and the gap S3 are set to have a dimensional relationship of a gap S1> a gap S3.   The pushbutton switch according to claim 1 or 4, wherein the pushbutton is made of a resin molded product.   The flange-shaped flange portion is formed by an inner end portion extending from the projecting tip portion of the annular convex portion to the inside of the main body case, and formed by an inner end surface and an outer peripheral surface of the extending portion. 6. The pushbutton switch according to claim 5, wherein a parting portion of the pushbutton is set on the ridgeline formed.   The ridgeline formed by the outer peripheral surface of the flange-shaped flange portion and the end surface facing the inner surface of the main body case is provided with a mold part for the push button, and a dent for avoiding the rubbing operation of the mold part of the push button. 6. The pushbutton switch according to claim 5, wherein a portion is provided on the inner surface of the main body case in correspondence with the ridgeline.   6. The pushbutton switch according to claim 5, wherein the parting portion of the pushbutton is formed of a chamfered portion or a curved portion.   The pushbutton switch according to claim 1 or 4, wherein the main body case is made of a resin containing glass fiber.   5. The pushbutton switch according to claim 1, wherein the parting portion of the main body case has an edge of the inner hole of the first through hole as a ridge line.   The pushbutton switch according to claim 1 or 4, wherein the pushbutton is covered with a plating layer.

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