JPH0449784Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an improvement of a non-contact push button type switch.

[Conventional technology]

Conventionally, a case body, a light emitting element and a switching light receiving element arranged opposite to each other in the case body, a push button provided on the case body so as to be movable from the outside toward the inside, and a push button inside the case body. , an operating rod having a light shielding plate and movably provided so that the light shielding plate can be inserted into the optical path between the light emitting element and the switching light receiving element; and an operating rod interposed between the push button and the operating rod. and a winding strip inserted therein, and the operating rod is operated to insert the light shielding plate into the optical path between the light emitting element and the switching light receiving element via the winding strip by pressing the push button. A non-contact push button switch has been proposed. In this case, if the push button is not pressed while the light-emitting element is activated in advance so that light can be obtained from it, the light-shielding plate is inserted into the optical path between the light-emitting element and the switching light-receiving element. The structure is such that the light from the light-emitting element is blocked from entering the switching light-receiving element, so that the switching light-receiving element remains in an off state. Furthermore, when the switching light-receiving element is kept in the OFF state, if the push button is pressed against the winding strip against the elastic force, the operating rod is activated, and the light-shielding plate closes the light-emitting element and the switching light-receiving element. As a result, the light from the light emitting element enters the photoelectric conversion element for light reception,
Therefore, the switching light receiving element is configured to change from an off state to an on state. Furthermore, if you release the push button from the state where the switching light receiving element is in the on state,
The push button is configured to return to its original position before being pressed by the elasticity of the winding strip, and the switching light-receiving element returns from the on state to the off state. The above is the structure of the conventionally proposed non-contact push button switch. According to the conventional non-contact push button type switch having such a configuration, when the light receiving element for switching is used in an electric circuit in advance and the push button is pressed and released, the electric circuit can be controlled. can do. Therefore, the conventional non-contact push button type switch described above also functions as a non-contact push button type switch.

[Problem that the idea aims to solve]

However, in the case of the above-mentioned conventional non-contact push button type switch, the winding strip is inserted between the push button and the operating rod, so when the push button is pressed, the operating rod is actuated, and the light shielding plate is connected to the light emitting element. When inserted between the light-receiving element for switching, the push button presses the winding strip directly toward the operating rod, so the winding strip had to have relatively large elasticity. . For this reason, the above-mentioned conventional non-contact push button switch has the disadvantage that a relatively large pressing force is required to press the push button. Further, the above-described conventional non-contact push button type switch has the disadvantage that it is difficult to assemble it into the above-described configuration. Therefore, the present invention aims to propose a novel non-contact push button type switch that does not have the above-mentioned drawbacks.

[Means to solve the problem]

The non-contact push button switch according to the present invention has the same features as the conventional non-contact push button switch described above.
a case body; a light-emitting element and a switching light-receiving element disposed facing each other in the case body; a push button movably provided on the case body from the outside toward the inside; and a light-shielding device inside the case body. and an operating rod movably provided such that the light shielding plate can be inserted into the optical path between the light emitting element and the switching light receiving element, and the operating rod is connected to the push button. The light shielding plate is actuated to insert the light shielding plate into the optical path by pressing the light shielding plate. However, in the non-contact push button type switch according to the present invention, in the non-contact push button type switch having such a configuration, the case body consists of a case body and a lid body thereof. In the case body, first left and right board guides are provided at the inner left and right rear positions thereof, and on the other hand, the first left and right board guides are provided on the inner side thereof. First left and right board guide grooves are provided, respectively, extending downward from the end face and facing each other. Further, second left and right board guide portions are provided in the lid body at left and right rear positions on the inside thereof, corresponding to the first left and right board guide portions, respectively; Second left and right board guide grooves extending upwardly and facing each other from the inner upper end surfaces of the left and right board guide portions are connected to the first left and right board guide grooves. are provided corresponding to each. Furthermore, a push button guide groove is provided on either the left or right side of the front plate portion of the case body, and extends downward from the upper end surface over the entire thickness. In addition, on the bottom plate of the case body, on the left and right sides opposite to the push button guide groove side,
A first bearing hole extending downward from the upper surface is provided in the top plate portion of the lid body, and a first bearing hole extending upward from the lower surface is provided on the left and right side of the top plate portion of the lid body, on the side opposite to the push button guide groove side. A second bearing hole is provided corresponding to the first bearing hole. Further, the light-emitting element and the switching light-receiving element are mounted facing each other on a common circuit board, and the circuit board positions the light-emitting element and the switching light-receiving element in front. Then, the rear parts of the left and right parts are inserted into the second left and right board guide grooves of the lid body, respectively, and the parts other than the rear part of the left and right parts are inserted into the first left and right board, respectively. Insert it into the guide groove,
It is mounted inside the case body. Further, the push button has a push button body extending in the front-rear direction, and a collar portion integrally provided at the rear portion thereof and extending outward in a plane perpendicular to the extension direction of the push button body, and inserting the push button body into the push button guide groove with the push button facing the flange so that it can freely come into contact with the inner surface of the front plate portion of the case body, It is provided in the case body. Furthermore, the operating rod has a push button engaging portion protruding forward at one free end thereof, and extends downward and upward on a common axis at the other free end. the light shielding plate has first and second shaft parts, and the light shielding plate has a position where the push button engaging part is provided on the operating rod, and a position where the push button engaging part is provided on the operating rod and the first and second shaft parts.
The operating rod is integrally provided with the plate surface extending back and forth and downward between the position where the shaft portion is provided, and the operating rod is capable of freely bringing the push button engaging portion into contact with the back surface of the push button. in a state in which the light shielding plate is inserted into the optical path between the light emitting element and the light receiving element for switching,
and a second shaft portion are loosely inserted into the first and second bearing portions, and are provided within the case body. Further, a winding strip is disposed around the first shaft portion of the operating rod, and both free ends of the winding strip are arranged such that the winding strip has two free ends.
The push button engaging portion is engaged with the case body and the operating rod, respectively, so as to be pivoted and biased so as to press into engagement with the back surface of the push button.

[Action/effect]

According to the non-contact push button switch according to the present invention,
If the light emitting element is activated in advance so that light can be obtained from it and the push button is not pressed, a light shielding plate is inserted in the optical path between the light emitting element and the light receiving element for switching (or the light shielding plate is inserted between the light emitting element and the light receiving element for switching Since the light emitting element is removed from the state of being inserted into the optical path between the light receiving elements, the light from the light emitting element is blocked from entering the switching light receiving element (or entering the switching light receiving element),
Therefore, the switching light receiving element remains off (or on). However, if the push button is pressed in such a state, the operating rod will move at the push button engagement part.
As it is pressed by the push button, the operating rod rotates against the winding strip, and as a result, the light-shielding plate is removed from the state where it is inserted into the optical path between the light-emitting element and the light-receiving element for switching (or the light-emitting element is removed). (inserted in the optical path between the light-emitting element and the light-receiving element for switching), so that the light from the light-emitting element enters the light-receiving element for switching (or is blocked from entering the light-receiving element for switching), and the light from the light-emitting element enters the light-receiving element for switching. The element goes from an off (or on) state to an on (or off) state. Furthermore, when the switch light-receiving element is in the on (or off) state, when the push button is released, the operating rod moves along with the push button due to the elasticity of the winding strip. It rotates back to its original position before being pressed, and the switching light receiving element returns from the on (or off) state to the off (or on) state. Therefore, in the non-contact push button type switch according to the present invention, as in the case of the conventional non-contact push button type switch described above, the push button is pressed while the switching light receiving element is used in the electric circuit. If you release it, you can control the electrical circuit,
Therefore, like the conventional non-contact push button switch described above, it has a non-contact push button switch function. However, in the case of the non-contact push button type switch according to the present invention, the winding strip is not inserted between the push button and the operating rod, and the winding strip moves the operating rod around the first shaft portion of the operating rod. Both free ends are arranged to engage with the case body and the operating rod, respectively, in order to rotate and bias the push button pressing part of the free end into pressure contact with the back surface of the push button. When rotating the rod to insert the light-shielding plate into the optical path between the light-emitting element and the light-receiving element for switching (or to remove it from the state where it is inserted into the optical path between the light-emitting element and the light-receiving element for switching), press the button. but,
In the case of the conventional non-contact push button type switch described above, the winding strip is not pressed directly, but the push button only pushes the push button engaging portion at the free end of the operating rod, which is rotationally biased by the winding strip. Even if a winding strip is used in the same manner as in the above, it is sufficient that the winding strip according to the present invention has a smaller elasticity than that of the conventional non-contact push button type switch described above. Therefore, the non-contact push button type switch according to the present invention requires a much smaller push than the conventional non-contact push button type switch in order to obtain the above-mentioned function of the non-contact push button type switch. Only pressure is required. Further, according to the non-contact push button type switch according to the present invention, the case body and its lid constitute the case body, the circuit board on which the light emitting element and the light receiving element for switching are mounted in advance, the push button, and the actuating rod. and,
As long as you prepare the winding strips separately in advance,
The circuit board is inserted into the first left and right board guide grooves and mounted in the case body, the push button is mounted by inserting the push button body into the push button guide groove, and then,
After inserting the first shaft into the first bearing hole with the operating rod and the winding strip arranged on the first shaft of the case body, both free ends of the winding strip are inserted into the case body. The main body and the operating rod are respectively engaged and mounted, and then,
A non-contact push button type switch can be easily assembled and configured by simply performing the simple operation of inserting the circuit board into the second left and right board guide grooves of the lid body of the case body and closing the lid. can.

【Example】

Next, an embodiment of a non-contact push button type switch according to the present invention will be described with reference to FIGS. 1 to 3. The non-contact push button type switch according to the present invention shown in FIGS. 1 to 3 has the following configuration. That is, it has a case body 1. This case body 1 consists of a case body 2 and a lid body 3 thereof. As is clear with reference to FIGS. 4 and 5, the case body 2 includes a front plate portion 2F and a back plate portion 2.
H, a left side plate part 2L, a right side plate part 2R, and a bottom plate part 2B, and inside the case body 2,
At the inner left and right rear positions, left and right board guide portions 4L and 4R are provided. In addition, those left and right board guide parts 4L and 4R
are provided with left and right board guide grooves 5L and 5R, respectively, which extend downwardly from the inner upper end surfaces of the board guide grooves 5L and 5R, respectively. Further, the front plate portion 2F of the case body 2 is provided with a push button guide groove 8 extending downward from the upper end surface over the entire thickness on either the left or right side, for example, on the right side as shown in the figure. It is being Furthermore, a bearing hole 11 extending downward from the top surface is provided on the left and right sides of the bottom plate portion 2B2 of the case body 2, on the side opposite to the push button guide groove 8 side, that is, on the left side. Further, in the bottom plate portion 2B of the case body 2, at a position between the push button guide groove 8 and the bearing hole 11 mentioned above,
In addition, an optical path forming plate part 13 having an upper end surface lower than the upper end surface of the case body 2 and forming an optical path forming groove 14 extending downward from the upper end surface extends downward from the upper end surface of the case body 2. It is planted extending forward and backward and up and down. Further, a locking piece guide groove 15F is formed on the front plate portion 2F of the case body 2 on the left side of the outer surface thereof, and extends downward from the upper end surface in a band shape. At the bottom surface of the
and an inclined surface portion 1 extending upwardly and inwardly from its free end.
A locking claw 16F having a diameter of 6Fb is provided. Further, on the back plate portion 2H of the case body 2, on the outer left side (the outer right side when viewed from the rear of the case body 2), a locking single guide groove 15H is formed which extends downward from the upper end surface in a band shape. ,on the other hand,
On the bottom surface of the locking single guide groove 15H, at the lower end thereof, the locking single claw 1 described above is provided integrally therewith.
Horizontal surface part 16Ha and inclined surface part 1 similar to 6F
A locking pawl 16H having a diameter of 6H〓b is provided. Further, a locking single guide groove 15R similar to the locking single guide grooves 15F and 15H extending downward from the upper end surface in a band-like manner is formed in the center of the right plate portion 2R of the case body 2. On the other hand, on the bottom surface of the locking single guide groove 15R, at its lower end, a locking pawl is integrally provided with a horizontal surface portion 16Ra and an inclined surface portion 16Rb similar to the aforementioned locking pawls 16F and 16H. 16R is provided. Further, as is clear with reference to FIG. 6 and FIG.
F, a front plate portion 3 corresponding to the back plate portion 2H, left side plate portion 2L, right side plate portion 2R, and bottom plate portion 2B, respectively;
F, has a back plate part 3H, a left side plate part 3L, a right side plate part 3R, and a top plate part 3T, and inside the lid body 3,
At the inner left and right rear positions, left and right board guides 6L and 6R are provided corresponding to the left and right board guides 4L and 4R of the case body 2, respectively. In addition, those left and right board guide parts 6L and 6
R, left and right board guide grooves 7L and 7R, which respectively extend upward from the inner upper end surface and face each other, are provided in the left and right board guide portions 4L and 4R of the case body 2, respectively. They are provided corresponding to the left and right board guide grooves 5L and 5R, respectively. Furthermore, a bearing hole 1 extending upward from the lower surface is provided in the top plate portion 3T of the lid body 3 on the side opposite to the push button guide groove 8 side among the left and right sides, that is, on the left side.
2 is provided corresponding to the bearing hole 11 provided in the bottom plate portion 2B of the case body 2. Furthermore, at a position corresponding to the locking piece guide groove 15F formed in the front plate part 2F of the case main body 2 on the front plate part 3F of the lid body 3, a groove is provided that extends downward and integrally therewith. A locking piece 17F forming a locking piece elongated hole 17Fa is provided corresponding to the locking piece guide groove 15F. Further, a locking piece guide groove 15 formed in the back plate surface 3H of the lid body 3 and the back plate part 2H of the case body 2 is provided.
At the position corresponding to H, integrally with it,
The locking piece 17H extending downward and forming the locking piece elongated hole 17Ha is connected to the locking piece guide groove 15H.
It is set up correspondingly. Furthermore, the case body 2 is attached to the right plate portion 3R of the lid body 3.
A locking piece guide groove 1 formed in the right plate portion 2R of
5R, a locking piece 17R that extends downward and forms a locking piece elongated hole 17Ra integrally with the locking piece guide groove 1
It is provided to correspond to 5R. It also includes a light emitting element 20, such as a light emitting diode, and a switching light receiving element 21, such as a photodiode or a phototransistor, which are arranged facing each other in the case body 1 described above. As is clear with reference to FIGS. 8 and 9, the light emitting element 20 and the switching light receiving element 21 are placed opposite each other on a circuit board 22 common to the light emitting element 20 and the switching light receiving element 21. It has been erected. In this case, the light emitting element 20 and the switching light receiving element 21 are led out of the case body 1 via the circuit board 22 using lead wires (not shown) (the leading means are not shown). ). In addition, the circuit board 22 on which the light emitting element 20 and the light receiving element 21 for switching are mounted has its left and right rear parts covered, respectively, with the light emitting element 20 and the switching light receiving element 21 positioned at the front. The body 3 is inserted into the left and right board guide grooves 7L and 7R, and the left and right parts other than the rear parts are inserted into the left and right board guide grooves 5L and 5R, respectively, and then installed in the case body 2. It is suspended. In this case, the light emitting element 20 and the light receiving element 21 for switching face each other through the optical path forming groove 14 of the above-mentioned optical path forming plate part 13, so that the optical path forming groove 14 is formed between the light emitting element 20 and the light receiving element 21 for switching. An optical path through 14 is formed. Further, the case body 1 has a push button 30 movably provided from the outside toward the inside. As is clear with reference to FIGS. 10 and 11, the push button 30 includes a push button main body 30a extending in the front-rear direction, and a surface perpendicular to the extending direction of the push button main body 30a integrally attached to the rear portion thereof. It has a flange portion 30b extending inwardly and outwardly. In the push button 30, the push button body 30a is attached to the front plate part of the case body 2 while the flange part 30b is in a state where it can freely come into contact with the inner surface of the front plate part 2F of the case body 2 of the case body 1. It is inserted into the push button guide groove 8 provided on the 2F and provided in the case body 1. It also has an operating rod 40 provided within the case body 1. As is clear with reference to FIGS. 12 to 14, this operating rod 40 has one free end side,
That is, the right free end side has a strip-shaped push button engaging portion 42 that projects forward integrally therewith and extends downward. Further, the operating rod 40 has, on the other free end side,
It has shaft portions 51 and 52 extending downward and upward, respectively, on a common axis. Furthermore, the operating rod 40 is provided with its plate surface extending forward and backward and downward between the position where the push button engaging portion 42 is provided and the position where the shaft portions 51 and 52 are provided. A light shielding plate 53 is provided. The actuating rod 40 having the above-mentioned configuration has its push button engaging portion 42 in a state where it can freely come into contact with the back surface of the push button 30 mentioned above, and the light shielding plate 53 is arranged between the light emitting element 20 and the light receiving element 21 for switching. The shaft parts 51 and 52 are provided in the case body 1 by being loosely inserted into the bearing holes 11 and 12, respectively, in a state where they can be freely inserted into the optical path. In this case, the light shielding plate 53 of the operating rod 40 can be freely inserted between the light path forming plate section 13 and the light emitting element 20 between the light emitting element 20 and the switching light receiving element 21 . Further, a winding strip 54 is arranged around the shaft portion 51 of the operating rod 40, and both free ends 54a and 54b of the winding strip 54 connect the operating rod 40 to the case body 2 and the operating rod 40, respectively. Push button engagement part 4
2 is engaged with the back surface of the push button 30 so as to be rotated and biased to press into engagement. The above is the configuration of the embodiment of the non-contact push button type switch according to the present invention. According to the non-contact push button type switch of the present invention having such a configuration, by connecting the light emitting element 20 to an external power source, the light emitting element 20 can be activated in advance so that light can be obtained from the light emitting element 20. , when the push button 30 is not pressed, the light shielding plate 53 is inserted in the optical path between the light emitting element 20 and the switching light receiving element 21, so that the light from the light emitting element 20 does not enter the switching light receiving element 21. Therefore, the switching light receiving element 21 maintains the off (or on) state. However, in such a state, the push button 30
When pressed, the operating rod 40 engages the push button engaging portion 4.
2, the push button 30 is pressed, so
The operating rod 40 rotates against the winding strip 54. Therefore, the light shielding plate 53 is no longer inserted in the optical path between the light emitting element 20 and the switching light receiving element 21, and the light from the light emitting element 20 enters the switching light receiving element 21. Therefore, the switching light receiving element 21 changes from the off state to the on state. Moreover, in this way, the light receiving element 21 for switching
When the push button 30 is released from the ON state, the operating rod 40 rotates together with the push button 30 to the original position before pressing the push button 30 due to the elasticity of the winding strip 54. As a result, the switching light receiving element 21 returns from the on state to the off state. Therefore, the non-contact push button type switch according to the present invention shown in FIGS. 1 to 3 also uses the switching light receiving element 21 in the electric circuit, as in the case of the conventional non-contact push button switch described above. In the state
By pressing and releasing the push button 30, an electric circuit can be controlled, and therefore, it functions as a non-contact push button switch, similar to the conventional non-contact push button switch described above. . However, in the case of the non-contact push button type switch according to the present invention shown in FIGS. 1 to 3, the winding strip 54
However, the winding strip 54 is not inserted between the push button 30 and the operating rod 40, and the winding strip 54 moves the operating rod 40 around the shaft portion 51 of the operating rod 40 so that the push button engaging portion 42 at the free end of the operating rod 40 is connected to the push button. Both free ends 54a and 54b are arranged to engage with the case body 2 and the operating rod 40, respectively, in order to rotate and bias them so as to press against the back surface, so that when the push button 30 is pressed, the operating rod 40 is moved. When rotating the light shielding plate 53 to insert it into the optical path between the light emitting element 20 and the switching light receiving element 21,
The push button 30 does not directly press the winding strip 54, but only pushes the push button engaging portion 42 at the free end of the operating rod 40, which is rotationally biased by the winding strip 54. Even if a winding strip is used as in the case of a conventional non-contact push button switch, the
It is sufficient that the winding strip 40 of the present invention shown in FIG. 3 has a smaller elasticity than that of the conventional non-contact push button type switch described above. Therefore, the non-contact push button type switch according to the present invention shown in FIGS. Compared to the case of
Only a significantly smaller pressing force is required. Further, according to the non-contact push button type switch according to the present invention shown in FIGS. (see Figures 8 and 7), and a circuit board 22 (see Figures 8 and 9) on which a light emitting element 20 and a switching light receiving element 21 are mounted in advance.
, a push button 30 (see FIGS. 10 and 11),
Operating rod 40 having a light shielding plate 53 (Figs. 12 to 1)
4) and the winding strip 54 (see FIG. 17) are prepared separately in advance, then the circuit board 22 can be inserted into the left and right board guide grooves 5L and 5R in the case body 2. (see FIG. 16), and also insert the push button body 30a into the push button guide groove 8 and mount the push button 30 (see FIG. 16).
With the operating rod 40 disposed on the case body 2 and the winding strip 54 on the shaft portion 51, the shaft portion 51 is inserted into the bearing hole 1.
1, both ends of the winding strip 54 are engaged with the case body 2 and the operating rod 40, respectively, and mounted (see FIG. 17). Next, the lid body 3 is attached to the case body 2, Insert the circuit board 22 into the left and right guide grooves 7L and 7R and cover them (see Fig. 16).
A non-contact push button type switch can be easily assembled and configured by simply performing the following steps. In addition, the above description merely shows one embodiment of the non-contact push button type switch according to the present invention.
For example, on the circuit board 22, the light emitting element 20
By adjusting the height position of the light-receiving element 21 for switching in advance, when the push button 30 is not pressed, the light from the light-emitting element 20 is incident on the light-receiving element 21 for switching. However, if the light receiving element 21 is kept in the on state and the push button 30 is pressed from this state,
A light shielding plate 53 provided on the operating rod 40 allows light from the light emitting element 20 to be directed to the switching light receiving element 2.
In addition, various modifications and changes can be made without departing from the spirit of the present invention. Will.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of a non-contact push button type switch according to the present invention. Figure 2 shows
FIG. 2 is a plan view of the non-contact push button switch according to the present invention shown in FIG. 1; FIG. 3 is a cross-sectional view taken along the - line in FIG. 2, with a portion not being a cross section. Fourth
5 are a partially cutaway front view and a plan view, respectively, of the case body of the case body used in the non-contact push button type switch according to the present invention shown in FIG. 1. 6 and 7 are a partially cutaway front view and a plan view, respectively, of the lid of the case body used in the non-contact push button type switch according to the present invention shown in FIG. 1. 8 and 9 are front views respectively showing a circuit board mounted inside the case body of the non-contact push button type switch according to the present invention shown in FIG. 1, and on which a light emitting element and a light receiving element for switching are mounted. and a plan view. 10 and 11 are a front view and a right side view showing a push button provided on a case body of the non-contact push button type switch according to the present invention shown in FIG. 1. Figure 12,
13 and 14 are a front view, a top view, and a right side view, respectively, showing an operating rod provided in a case body of the non-contact push button type switch according to the present invention shown in FIG. 1. FIG. 15 is a sectional view taken along the line -- in FIG. 2, showing only the case body used in the non-contact push button type switch according to the present invention shown in FIG. FIG. 16 is a plan view showing the case body used in the non-contact push button type switch according to the present invention shown in FIG. 1, with a circuit board and a push button mounted thereon. FIG. 17 shows the case body of the case body used in the non-contact push button type switch according to the present invention shown in FIG. FIG. 1...Case body, 2...Case body, 2B...
Bottom plate part, 2C...Left plate part, 2F...Front plate part, 2H
... Back plate part, 3 ... Lid body, 3T ... Top plate part, 4
L, 6L...Left board guide part, 4R, 6R...Right board guide part, 5L, 7L...Left board guide groove, 5R,
7R...Right board guide groove, 8...Push button guide groove, 1
1, 12... bearing hole, 13... optical path forming plate part,
14... Optical path forming groove, 15F, 15H, 15R
... Single guide groove for locking, 16F, 16H, 16R...
...Locking claw, 16Fa, 16Ha, 16Ra...Horizontal surface part, 16Fb, 16Hb, 16Rb...Slope surface part,
17F, 17H, 17R...Locking piece, 20...
Light emitting element, 21... Light receiving element for switching, 2
2... Circuit board, 30... Push button, 30a... Push button body, 30b... Flange portion, 40... Operating rod, 42...
...Push button engaging portion, 51, 52... Shaft portion, 53... Light shielding plate, 54... Winding thread, 54a, 54b... Free end of winding thread.

Claims (1)

[Scope of Claim for Utility Model Registration] A case body, a light emitting element and a switching light receiving element disposed facing each other in the case body, and a push button provided on the case body so as to be movable from the outside to the inside. and an operating rod having a light shielding plate in the case body and movably provided so that the light shielding plate can be inserted into the optical path between the light emitting element and the switching light receiving element, A push-button photoelectric switch in which the operating rod operates to insert the light shielding plate into the optical path by pressing the push button, wherein the case body includes a case body and a lid body thereof; First left and right board guides are provided in the main body at the inner left and right rear positions thereof, and the first left and right board guides are arranged downwardly from their inner upper end surfaces, respectively. first left and right board guide grooves are provided respectively extending in the direction, and second left and right board guides are provided in the lid body at inner left and right rear positions thereof, respectively. Second left and right board guide portions are provided corresponding to the left and right board guide portions, respectively, and extend oppositely from the inner upper end surfaces of the second left and right board guide portions upward, respectively. A right board guide groove is provided corresponding to the first left and right board guide grooves, respectively, and a right board guide groove is provided in the front plate portion of the case body, on either the left or right side thereof, from the top end surface to A push button guide groove is provided in the bottom plate portion of the case body, and a push button guide groove is provided in the bottom plate portion of the case body, and a groove extending downward from the top surface is provided on the left and right side of the case body, on the side opposite to the push button guide groove side. A second bearing hole is provided in the top plate portion of the lid body, and a second bearing hole extending upward from the bottom surface is provided on the left and right sides of the top plate portion of the lid body, which are opposite to the push button guide groove side. The light emitting element and the switching light receiving element are provided corresponding to the bearing hole of No. 1,
They are mounted facing each other on a common circuit board, and with the circuit board positioning the light emitting element and the light receiving element for switching in the front, the rear parts of the left and right parts are respectively mounted on the lid body. is inserted into the second left and right board guide grooves, and parts other than the rear parts of the left and right parts are inserted into the first left and right board guide grooves, respectively, so that the case body is installed in the case body. , the push button has a push button main body extending in the front-rear direction, and a collar portion integrally extending outward in a plane perpendicular to the extending direction of the push button main body at its rear portion; In a state where the push button is in a state where the flange portion thereof can freely come into contact with the inner surface of the front plate portion of the case body,
Insert the push button body into the push button guide groove,
The operating rod is provided in the case body, and has a push button engaging portion protruding forward at one free end side thereof, and downward and upward directions respectively on a common axis at the other free end side. the light-shielding plate has first and second shaft portions extending to the operating rod, and the light shielding plate is provided with the first and second shaft portions at a position where the push button engaging portion is provided on the operating rod. The operating rod is provided integrally with the plate surface extending forward and backward and downward, and the operating rod is in a state in which the push button engaging portion can freely come into contact with the back surface of the push button, and In a state where the light shielding plate can be freely inserted into the optical path between the light emitting element and the switching light receiving element, the first
and a second shaft part is loosely inserted into the first and second bearing holes, respectively, and is provided in the case body, a winding thread is arranged around the first shaft part, and the winding thread is arranged around the first shaft part, and the winding thread is arranged around the first shaft part. so that both free ends of the push button are rotatably biased by the case body and the operating rod, respectively, so that the push button engaging portion is pressed into engagement with the back surface of the push button;
A non-contact push button type switch characterized by being engaged.