JP3280851B2 - Vending machine push button switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a push button switch device for a vending machine.

[0002]

2. Description of the Related Art As a push button switch device of a vending machine, for example, those described in Japanese Utility Model Laid-Open No. 2-115223 and Japanese Utility Model Laid-Open No. 2-18229 are known. This conventional device includes a support frame detachably provided on a front panel of a vending machine, a circuit board provided on a front side of the support frame, a switch unit provided on a front surface of the circuit board, A waterproof cover that covers and waterproofs the switch section,
A push button cover provided on the front side of the waterproof cover and pushing the waterproof cover, and a fixing member provided inside the waterproof cover and sandwiching the waterproof cover between the push button cover and A front frame fixed to the support frame with a hole for the push operation of the push button cover.

The waterproof cover is provided with a rod-shaped projection which comes into contact with the switch part so as to be able to come and go, and the fixing member is provided with a hole for penetrating and holding the projection.

[0004]

In the conventional push button switch device of a vending machine, a waterproof cover is provided.
Since the rod-shaped projection for pushing the switch portion was provided, the shape was complicated and the manufacturing cost was high. Further, in the conventional device, the switch is pushed and operated with the tip of the protrusion protruding from the waterproof cover, and it is difficult to assemble the protrusion amount of the protrusion from the fixing member at a constant level. Since the amount of protrusion of the projection is not constant, the pushing operation becomes unstable, and there is a possibility that the switch portion may be damaged due to excessive pushing.

According to the present invention, by simplifying the shape of the waterproof cover, the manufacturing cost can be reduced, and the amount of push operation of the push button switch is regulated to prevent damage to the switch section. It is an object of the present invention to provide a push button switch device for a vending machine.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the features of the present invention include a support frame attached to the front panel of a vending machine, a circuit board provided on the front side of the support frame, and a switch unit provided on the front face of the circuit board. A waterproof cover that covers the switch portion and waterproofs and has an elastic restoring force, a push button cover provided on the front side of the waterproof cover to push and operate the waterproof cover, An automatic member having a fixing member provided to sandwich the waterproof cover between the push button cover and a front frame member having a pressing operation hole of the push button cover and fixed to the support frame member; In a push button switch device of a vending machine, the waterproof cover is provided for the switch section.
Uniform thickness that bulges forward to cover a certain space
Swelling portion, the fixing member is fitted in the swelling portion,
The fixing member regulates the approach distance to the circuit board.
A contact portion between the regulating portion and the pushing portion.
The distance from the surface is set to a predetermined value, and the fixing member is provided with a pushing portion that comes into contact with the switch portion so as to be able to come and go, separately from the waterproof cover.

According to the push button switch device of the present invention having the above-described structure, the waterproof cover does not require the conventional bar-shaped projection, and thus the shape is simplified. In addition, since the pressing portion is provided on the fixing member, it is easy to set the amount of protrusion of the pressing portion from the fixing member to be constant, and it is easy to make the pressing force on the switch portion constant. Further, according to the present invention, since the pressing portion can be formed separately from the waterproof cover, not only the conventional silicone rubber but also any other material such as spring steel is selected. It is possible to increase the degree of freedom of design and extend the life of the switch unit.

[0008]

Further, by forming the pushing portion with an elastic body, it is possible to absorb an error in the amount of projection of the pushing portion from the fixing member, and to more effectively prevent damage to the switch portion due to excessive pushing. can do.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a push button switch device of the present invention includes a support frame 2 detachably provided on a front panel 1 of a vending machine, a circuit board 3 provided on the front side of the support frame 2, A switch unit 4 and a light-emitting unit 5 provided on the front surface of the substrate 3; a waterproof cover 6 covering the switch unit 4 and the light-emitting unit 5 for waterproofing and having an elastic restoring force; A push-button cover 7 provided for operating the waterproof cover 6 for pushing;
A fixing member 8 provided inside the waterproof cover 6 to clamp the waterproof cover 6 with the push button cover 7
And a front frame 10 having a hole 9 for pushing operation of the push button cover 7 and being detachably fixed to the support frame 2.

The support frame 2 is made of a horizontally long synthetic resin plate and has a large thickness. The circuit board 3 attached to the front surface of the frame 2 is formed of a thin plate made of a horizontally long synthetic resin and slightly smaller than the support frame 2.
On the front surface of the circuit board 3, the switch unit 4 is provided, and on both sides of the switch unit 4, a light emitting unit 5 composed of a light emitting diode or the like is provided. 11 are formed. A plurality of such switch operation units 11 are formed on one circuit board 3. The switch operation unit 1 of the circuit board 3
A connector 12 for connecting 1 to another electric device protrudes rearward from the rear surface of the support frame 2.

The connector 12 is connected to the support frame 2 via a first seal member 13 made of a silicon rubber sheet or the like.
It is fixed to the rear surface. A screw portion 14 is provided on the support frame 2 near the connector 12. This screw part 1
Reference numeral 4 has a projection 15 whose rear surface portion integrally projects rearward. The projecting portion 15 is provided with a through hole 16, and the front side of the hole 16 is a non-circular spot facing hole 17 such as a square or an ellipse. A metal cap nut 18 is fitted in the counterbore hole 17. On the rear surface side of the support frame 2, a second seal member 19 that fits into the protrusion 15 is provided. This seal member 19 is formed as a seal packing made of silicon rubber or the like.

The waterproof cover 6 is made of silicone rubber or the like, has predetermined elasticity, and has translucency. The waterproof cover 6 includes the switch unit 4 and the light emitting unit 5.
And a swelling portion 20 swelling forward so as to cover the switch operation portion 11 composed of the above with a predetermined space. The bulging portions 20 are provided continuously by the number of the switch operating portions 11. And the peripheral edge 21 of this bulging portion 20
Is configured to contact and waterproof the front surface of the circuit board 3.

In the inside of the bulging portion 20 of the waterproof cover 6,
The fixing member 8 is provided. This fixing member 8
A peripheral wall 22 formed of a hard synthetic resin and having an outer shape that fits into the inner shape of the bulging portion 20, a connecting wall 23 that connects a central portion of the peripheral wall 22, and a light-transmitting space that closes the front side space thereof. And a part 24. The connection wall 23 has a light-blocking property for blocking the light of the light emitting unit 5, and the light transmitting unit 24 has a light transmitting property of transmitting the light of the light emitting unit 5.

The light transmitting portion 24 and the connecting wall 23 and the peripheral wall 2
2 may be integrally formed of a different material, or may be integrally assembled with an adhesive or the like or by fitting. A concave portion 25 is formed on the rear surface side of the connecting wall 23, and a pressing portion 26 is fitted and fixed in the concave portion 25. The pressing portion 26 is formed of an elastic material such as silicone rubber, and has a rear end surface serving as a switch portion contact surface 27.
The switch section 4 is configured to be short-circuited or actuated when the switch section contact surface 27 contacts the switch section 4.

The fixing member 8 is provided with a restricting portion 28 for restricting the approach distance to the circuit board 3. That is, when the pushing portion 26 is pushed rearward, the rear end face of the fixing member 8 comes into contact with the front surface of the circuit board 3 to regulate the pushing amount of the pushing portion 26 and to push the pushing portion 26 The switch unit contact surface 27 is configured to contact the switch unit 4 with an appropriate contact pressure. Therefore, in this case, the rear end surface of the fixing member 8 is the regulating portion 28.

The push button cover 7 is fitted on the front surface of the bulging portion 20 of the waterproof cover 6. The push button cover 7 is formed of a hard transparent synthetic resin.
The waterproof cover 6 is sandwiched and fixed between the inner surface of the push button cover 7 and the outer surface of the fixing member 8. A display panel 29 is interposed between the push button cover 7 and the waterproof cover 6. On the display panel 29, "O" is displayed corresponding to one of the light emitting units 5, and "Sold Out" is displayed corresponding to the other light emitting unit 5.

The display plate 29 may be interposed between the waterproof cover 6 and the fixing member 8. And the front frame 10 having the hole 9 through which the push button cover 7 is inserted,
The support frame 2 is fitted to the support frame 2 so as to cover the front surface. The front frame body 10 presses the periphery of the waterproof cover 6 so as to be in close contact with the circuit board 2.

The periphery of the push button cover 7 is formed with a flange 28 projecting outward. The flange 30 of the push button cover 7 is always engaged with the periphery of the push operation hole 9 of the front frame body 10 by the elastic force of the waterproof cover 6, and the push button cover 7 7
Escape is prevented. In addition, by sandwiching the waterproof cover 6 between the push button cover 7 and the fixing member 8, the elastic force of the waterproof cover 6 is effectively exhibited, and the elastic return to the pushing operation of the push button cover 7 is reliably performed. It is.

The unitized push button switch device having the above configuration is detachably attached to the front surface of the front panel 1 of the vending machine. That is, the front panel 1 has an insertion hole 31 at a position corresponding to the connector 12 of the push button switch device, and a fixing hole 32 at a position corresponding to the screw portion 14. Then, the connector 12 is inserted into the insertion hole 31, the projection 15 of the screw portion 14 is inserted into the fixing hole 32, and the bolt 33 is screwed into the nut 18 of the screw portion 14. Fixed to panel 1. At this time, the sealing member 13 of the connector 12 closes the insertion hole 31 and the sealing member 19 of the screw portion 14 closes the fixing hole 32, so that rainwater flows from the rear side of the support frame 2 into the connector 12 or the screw. It prevents entry into the switch operation unit 11 from the unit 14.

FIG. 2 shows another embodiment of the present invention, in which a socket portion 34 for accommodating the connector 12 is integrally protruded from a rear end surface of the support frame 2 and a fixing member 8 is provided. 1 is different from the one shown in FIG. 1 in that a hole 35 for transmitting light of the light emitting part 5 is formed instead of the light transmitting part 24, and other configurations are the same as those in FIG. . still,
The present invention is not limited to the embodiment described above. For example, the pressing portion 26 can be formed of not only silicon rubber but also another elastic body such as a spring.

[0022]

According to the present invention, since the waterproof bar does not have a bar-shaped projection as in the prior art, its shape can be simplified and the manufacturing cost can be reduced. In addition, since the pressing portion is provided on the fixing member, it is easy to set the amount of protrusion of the pressing portion from the fixing member to be constant, and it is easy to make the pressing force on the switch portion constant.

According to the present invention, since the pushing portion can be formed separately from the waterproof cover, the pushing portion is not limited to the conventional silicone rubber but may be made of any other material such as spring steel. A switch can be selected, and the degree of freedom of design and the life of the switch can be extended. Further, the fixing member is provided with a regulating portion for regulating an approaching distance to the circuit board, and a distance between the regulating portion and a switch contact surface of the pushing portion is set to a predetermined value, so that a push button is provided. When the cover is pushed, the pressing force between the switch contact surface and the switch becomes constant, thereby preventing the switch from being damaged due to excessive pushing as in the related art.

Further, by forming the pushing portion with an elastic body, it is possible to absorb an error in the amount of projection of the pushing portion from the fixing member, and to more effectively prevent damage to the switch portion due to excessive pushing. can do.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front panel 2 Support frame 3 Circuit board 4 Switch part 6 Waterproof cover 7 Push button cover 8 Fixing member 9 Pushing operation hole 10 Front frame 26 Pushing part 27 Switch contact surface 28 Control part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 13/06 H01H 13/70 G07F 9/00

Claims (2)

(57) [Claims] 1. A support frame attached to the front panel of the vending machine (1) and (2), the support frame and the circuit board (3) provided on the front surface side of (2), the circuit board (3 ) , A switch unit (4) provided on the front surface of the switch unit, and the switch unit
(4) and the waterproof cover (6) having an elastic restoring force with waterproof covering the push button cover press operation the waterproof cover (6) provided on the front side of the waterproof cover (6) ( 7), wherein a fixing member for clamping between the provided inwardly waterproof cover (6) and the push button cover (7) of the waterproof cover (6) (8), wherein the push button cover (7) The supporting frame body having a hole (9) for pushing operation
In a push button switch device of a vending machine having a front frame body ( 10) fixed to (2) , the waterproof cover (6) connects the switch portion (4) to a predetermined position.
A bulge of uniform thickness that bulges forward to cover the space
A protrusion (20), and the fixing member (8) is fitted into the bulge (20);
The distance between the mounting member (8) and the circuit board (3) is regulated.
And a regulating unit (28) for controlling
The distance between the pushing portion (26) and the switch portion contact surface (27).
The separation is set to a predetermined value, and the pressing member (26) which comes into contact with the switch part (4) so as to freely contact and separate from the switch part (4) is provided on the fixing member (8 ).
A push button switch device for a vending machine, which is provided separately from the above. 2. The pressing portion (26) is formed of an elastic body.
Push button switch device for the automatic vending machine according to claim 1, characterized in that it is.