JPS6234380Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a push button switch for a vending machine with improved waterproofness.

[Conventional technology]

Vending machines generally have a number of push button switches on the front door as vending switches. That is, the first
In the figures, reference numeral 1 denotes a front door of a vending machine, and 2 denotes push button switches serving as vending switches arranged horizontally and vertically on the front door 1.

The push button switch 2 is a mounting member 1a of the front door 1.
The switch body 3 is fixed to a switch body 3, and a square cylindrical push button 5 whose front end is fitted into a hole 4a opened in a switch cover 4 attached to a front door 1 is provided. Further, the push button 5 is attached to the switch body 3 so as to be movable in the front and rear directions, and is biased forward by a spring 6 within the switch body 3.
Reference numeral 7 denotes a collar-shaped flange provided on the outer periphery of the push button 5, which comes into contact with the inner surface of the switch cover 4 under the bias of a spring 6, and serves as a stopper for the push button 5.
Reference numeral 8 indicates an arrow pointing to a sample product and a sold-out display provided on the front of the push button 5; 9 a micro switch built into the switch body 3; and 10 a micro switch that is operated when the push button 5 is pressed and outputs a sales signal;
is a lamp provided inside the push button 5 to illuminate the display 8 when necessary.

[Problem that the invention attempts to solve]

By the way, since vending machines are sometimes installed outdoors, waterproof measures are required to prevent rainwater from entering the energized parts inside the switch. Therefore, in the push-button switch 2, the flange 7 also serves as a waterproof wall for damming up rainwater that attempts to enter from between the hole 4a of the switch cover 4 and the outer peripheral surface of the push-button 5.

However, in this structure, the switch cover 4
Rainwater that has entered between the switch cover 4 and the flange 7 through the hole 4a due to capillary action is repelled by the flange 7 coming into contact with the switch cover 4 again when the pressed push button 5 returns. It may go around inside the flange 7, travel along the outer periphery of the push button 5, and enter the current-carrying part in the switch body 3. Therefore, the push-button switch 2 described above has insufficient waterproof performance as a switch used in a vending machine installed outdoors, and has the problem of lacking reliability.

Therefore, in order to solve this problem, it has been proposed to provide a flange-shaped waterproof wall similar to the flange 7 on the outer periphery of the push button 5 behind the flange 7, in addition to the above-mentioned configuration. It has been found that when push button switches are arranged one above the other as shown in Figure 1, it is not possible to prevent rainwater from entering the lower switches.

In other words, when rainwater entering through the push button of the upper switch is blocked by the waterproof wall installed as described above, the rainwater blocked here drips from the bottom end of the waterproof wall onto the push button of the lower switch. do. On the other hand, in the upper switch, when the push button is pressed, the waterproof wall is positioned further back than the waterproof wall of the lower switch. Therefore, as mentioned above, rainwater that drips from the waterproof wall of the upper switch may drip to the rear of the waterproof wall of the lower switch, and rainwater that drips from the upper side flows around the outer circumference of the push button of the lower switch and enters the switch body. invade.

Therefore, even if a waterproof wall is simply provided on the outer periphery of a push button as described above, it is not possible to install it above and below with that structure; for example, water may drip from the upper switch between the upper and lower push button switches. Special components are required, such as installing gutter-like bulkheads to catch rainwater.

In consideration of the points mentioned above, this idea reliably prevents rainwater from entering the switch body through the pushbuttons, and even if the pushbutton switches are placed one above the other, special parts such as partitions are provided between the switches. To provide a push-button switch for a vending machine that is inexpensive to manufacture and provides highly reliable waterproof performance by waterproofing a lower switch without any trouble.

[Means for solving problems]

This invention consists of a switch main body that has a built-in micro switch and is fixed to the front door of a vending machine; a cylindrical push button for operating the microswitch that is fitted into a hole opened in the switch cover, and a flange-shaped flange on the outer periphery of the push button that abuts the inner surface of the switch cover. In the push button switch of a vending machine, a flange-shaped waterproof wall inclined backward is provided on the outer periphery of the push button, located between the flange and the switch body.

[Effect]

According to the push button switch of this invention constructed based on the above means, rainwater that has entered the inside of the flange 7 is removed by the flange-shaped waterproof wall located on the outer periphery of the push button 5 between the flange 7 and the switch body 3. 12
, and is prevented from penetrating into the switch body 3 along the outer periphery of the push button 5. Moreover, since the waterproof wall is tilted backwards, that is, the top end of the waterproof wall is located further back than the bottom end, so even if the push button switches are placed one above the other, rainwater dripping from the waterproof wall of the upper switch will This ensures that the liquid drips in front of the waterproof wall of the lower switch, and can prevent it from entering the lower switch body without providing a partition wall or the like.

〔Example〕

Hereinafter, an embodiment of this invention will be described based on FIG. 4. In addition, in Figure 4, Figures 1 to 3
Parts common or identical to those in the figures are given the same reference numerals.

In FIG. 4, the push button switch 2 has a waterproof wall 12 on the outer periphery of the push button 5. As shown in FIG. This waterproof wall 12 is located between the flange 7 and the switch body 3,
Moreover, it is provided so as to be tilted backward, and the lower end is located forward of the upper end.

In this configuration, as described above, when the push button 5 is operated, rainwater that climbs over the flange 7 and enters into the switch body 3 is prevented from entering the switch body 3 by the waterproof wall 12. fall along. In addition, when the push button switches 2 are arranged vertically as shown in the figure, the waterproof wall 12 of the upper push button switch 2
The rainwater dripping along the
However, since the waterproof wall 12 is tilted backwards, it falls on the front side of the waterproof wall 12 of the lower push button switch 2, and drips from the lower end along the waterproof wall 12. Therefore, in this push-button switch 2, there is no fear of rainwater entering the switch body 3, and there is no need to provide the aforementioned partition wall between the upper and lower push-button switches.

By the way, even if the waterproof wall 12 is installed vertically without being inclined, if the waterproof wall of the switch on the upper stage is located forward of the switch on the lower stage, rainwater will flow to the upper stage as in the case of the push button switch of this invention. It will start to drip from the waterproof wall to the front of the lower waterproof wall. However, in this case, it is necessary to manufacture and prepare switches with different waterproof wall positions for each number of upper and lower stages. In this regard, the push-button switch of this invention allows the use of exactly the same push-button switches on the upper and lower sides as shown in FIG. 4, making it possible to use common parts, thereby reducing costs and making management of parts extremely easy.

[Effect of idea]

As described above, according to this invention, the flange-shaped waterproof wall 12 is provided on the outer periphery of the push button 5 between the flange 7 and the switch body and tilts backward. Even if rainwater enters the switch body 3, it is reliably prevented from entering the switch body 3.Moreover, even if the push button switches are arranged one above the other, the lower switch can be removed without installing any special parts such as a partition wall between the switches. In addition, the same push-button switch can be used for the top and bottom, making it possible to standardize parts, making it possible to reduce production costs, simplify parts management, and achieve highly reliable waterproof performance. A push button switch for the vending machine can be provided.

[Brief explanation of drawings]

Figure 1 is a front view of a vending machine to which this invention is applied, Figures 2 and 3 are front views and sectional views of a conventional push button switch, and Figure 4 is a push button switch showing an embodiment of this invention. FIG. 1...Front door, 2...Push button switch, 3...Switch body, 4...Switch cover, 4a...Switch cover hole, 5...Push button, 6...Spring, 7
...Flange, 9...Micro switch, 12...
…Waterproof walls.

Claims (1)

[Scope of utility model registration request] A switch body that has a built-in micro switch and is fixed to the front door of a vending machine, and a switch cover that is attached movably and forwardly biased by a spring to the switch body and whose front end is attached to the front door. A vending machine comprising a cylindrical push button fitted into an opening hole for operating the micro switch, and a flange-like flange on the outer periphery of the push button that abuts the inner surface of the switch cover. 1. A push button switch for a vending machine, characterized in that a flange-shaped waterproof wall tilting backward is provided on the outer periphery of the push button between the flange and the switch body.