JP3142415U - Pachinko ball passage detection switch - Google Patents

Abstract

A pachinko ball passing detection switch that prevents false detection due to mechanical vibration and avoids chattering.
A pachinko ball passage 12 that allows a pachinko ball to pass therethrough is formed in a switch body 10. Further, the switch body 10 always faces the pachinko ball passage 12, the projection 20 that is pressed and moved by the passage of the pachinko ball, and the first contact 30 that can contact and separate from the outside of the pachinko ball passage 12. And a second contact 32 is provided. The first contact 30 and the second contact 32 are closed or opened by the movement of the protrusion 20. The pachinko ball passage detection switch includes an elastic piece 40 that elastically biases the protrusion 20 so that the tip 22 of the protrusion 20 always faces the pachinko ball passage 12.
[Selection] Figure 1

Description

  The present invention relates to a pachinko ball passage detection switch provided in a pachinko ball flow passage of a pachinko machine, and more specifically, a pachinko ball passage detection switch that further improves reliability by preventing malfunction and chattering due to mechanical vibration. It is about.

  As is well known, in a pachinko machine, when the game board is provided with a prize-winning tool, a prize-winning device, etc. Various prize ball operations are executed. In addition, other pachinko balls that have not entered the prize-winning tool or the prize-winning device etc. flow out to the back surface of the pachinko game board as detachment balls. As described above, in the pachinko machine, it is necessary to determine whether the pachinko ball hit on the game board is a safe ball or a dislodged ball, or to accurately detect the number or the like. Therefore, pachinko ball passage detection switches are attached to various places of the pachinko ball flow path provided on the back side of the pachinko machine, and the pachinko balls are detected by the switches.

As shown in FIG. 6, in the conventional pachinko ball passage detection switch, a pachinko ball passage 12 allowing passage of pachinko balls is defined in the switch body 10, and the passage 12 becomes a part of the pachinko ball flow passage. It is arranged in a pachinko machine (not shown). The switch body 10 is provided with a protrusion 20 that always faces the pachinko ball passage 12 in a forward state and is moved backward by being pushed by the passage of the pachinko ball, and is spaced apart from the pachinko ball passage 12. A first contact 30 and a second contact 32 made of an elastic member such as a leaf spring having conductivity are provided. That is, when the pachinko ball passes through the pachinko ball passage 12 in this state, the projection 20 is pressed by the pachinko ball, and the first contact 30 is pressed by the projection 20 to mechanically contact the second contact 32. , Configured to detect the passage of pachinko balls. And after the pachinko ball passes, the projection 20 is set to return to the detection position of the pachinko ball passage 12 by the elasticity of the first contact 30 (see, for example, Patent Document 1).
Registered Utility Model No. 2552648

However, the following drawbacks are pointed out in the conventional pachinko ball passing detection switch.
(1) The so-called normally open (normally open contact type) type pachinko ball passage detection switch always keeps the first contact 30 and the second contact 32 released from mechanical contact. The first contact 30 is pressed by the backward movement of the protrusion 20 so as to be mechanically brought into contact with the second contact 32. In this case, the strokes of the protrusions 20, that is, the separation distance between the first contact 30 and the second contact 32 are compared so that a plurality of pachinko balls flowing continuously through the pachinko ball flow passage can be detected individually. It is set shortly. For this reason, the first contact 30 and the second contact 32 sometimes come into contact with each other due to mechanical vibration that occurs when the pachinko ball collides with the inner surface of the pachinko ball flow path or collides with the switch body 10, and the pachinko ball There was a case where the passing of a ball was erroneously detected. In addition, the player may tap the glass surface of the pachinko machine with his / her hand and the first contact 30 may come into contact with the second contact 32 due to the impact, and the pachinko ball may be erroneously detected.
(2) In the pachinko ball passage detection switch, in order to accurately detect pachinko balls passing continuously, the projection 20 is set to a detection position (a position where the tip of the projection 20 faces the pachinko ball passage 12). It is necessary to return quickly. Therefore, conventionally, this is dealt with by shortening the distance between the first contact 30 and the second contact 32 or increasing the elasticity of the first contact 30. However, when the elasticity of the first contact 30 is increased, when the pressing state of the protrusion 20 is released, the elasticity of the first contact 30 is excessive and the first contact 30 vibrates greatly, for example, when it is turned on. In the moment when the contacts collide with each other, it is not stable once, for example, it shows a behavior (chattering) that finally settles into a contact state while rampaging like a ball bouncing. Further, when the contact pressure is instantaneously lost from the first contact point 30 when turning off, the first contact point 30 behaves while bouncing away from the second contact point 32. When chattering occurs in this way, a plurality of pachinko balls are detected in spite of the passage of a single pachinko ball, causing damage to a pachinko store.

  In view of the above problems inherent in the pachinko ball passing detection switch according to the prior art, the present invention has been proposed to suitably solve these problems, and it is intended to prevent erroneous detection due to mechanical vibration and to chatter. It is an object of the present invention to provide a highly reliable pachinko ball passage detection switch that can avoid the above-described problem.

In order to overcome the above problems and achieve the intended purpose, the pachinko ball passing detection switch according to the present invention is:
A pachinko ball passage allowing passage of the pachinko balls, a tip that always faces the pachinko ball passage, a protrusion that moves by being pressed by the passage of the pachinko balls, and a first disposed outside the pachinko ball passage. In a pachinko ball passage detection switch comprising one contact and a second contact, and configured to close or open the first contact and the second contact by the movement of the protrusion,
An elastic piece provided between the front end and the rear end of the protrusion;
An arm portion made of a metal conductor formed in a plate shape provided at the first contact so as to contact the rear end of the protrusion;
The protrusion is elastically urged by the elastic piece and the arm portion so that the tip of the protrusion can always face the pachinko ball passage.

  As described above, according to the pachinko ball passage detection switch according to the present invention, the elastic piece and the arm portion that elastically urges the protrusion are provided so that the tip of the protrusion always faces the pachinko ball passage. Thus, it is possible to obtain a highly reliable pachinko ball passage detection switch that can prevent erroneous detection due to mechanical vibration and can avoid chattering. Further, by providing the elastic piece, the movement of the protrusion when the protrusion is pressed, that is, the protrusion is linearly moved forward and backward to open and close the first contact and the second contact, or a seesaw In any other form, such as a form in which the first contact and the second contact are opened and closed by swinging as described above, the reliability can be improved.

  Next, a pachinko ball passage detection switch according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. For convenience of explanation, the same components as those of the conventional pachinko ball passage detection switch are denoted by the same reference numerals, and detailed description thereof is omitted. Further, as a pachinko ball passage detection switch of the embodiment, a normal open type contact that is electrically connected when the pachinko ball passes and is always electrically opened will be described.

  FIG. 1 is a plan view showing a pachinko ball passage detection switch partially cut away according to an embodiment. The pachinko ball passage detection switch (hereinafter also simply referred to as a detection switch) is provided on the back of a game board in a pachinko machine. The pachinko ball flow passage 2 (see FIG. 2) in which pachinko balls are distributed and distributed is disposed at a required location. The detection switch includes a switch body 10 provided with a frame 14 having a hole (hereinafter referred to as a “pachinko ball passage”) that becomes a part of the pachinko ball flow passage 2 when disposed in a pachinko machine, and a pachinko ball. A protrusion 20 that protrudes into the passage 12 by a required length and is movable forward and backward, and an elastic member that is provided on a stopper portion 26 of the protrusion 20 and urges the protrusion 20 toward the pachinko ball passage 12. It basically includes a piece 40 and a first contact 30 and a second contact 32 which are made of a metal leaf spring and function as contacts.

  The protrusion 20 includes a front end (front end) 22 protruding toward the pachinko ball passage 12, a rear end (rear end) 24 extending in a direction away from the pachinko ball passage 12, a front end 22 and a rear end. And a hook-like stopper portion 26 provided with a groove 26a provided between the portion 24 and opened in a direction orthogonal to the moving direction of the protrusion 20. The protrusion 20 is disposed in a state in which the stopper portion 26 is housed in the housing portion 16 formed in the switch body 10, and a front regulating portion 16 a formed on the front end (pachinko ball passage 12 side) of the housing portion 16. The movement range of the protrusion 20 is defined by restricting the movement of the stopper portion 26 by the rear restricting portion 16b formed at the rear end (on the first contact 30 side). The groove 26 a of the stopper portion 26 is disposed so that the central portion of the elastic piece 40 is fitted, and both ends of the elastic piece 40 are restricted by the intermediate restricting portion 16 c formed in the storage portion 16. It is configured to be. Further, the rear end portion 24 of the protrusion 20 is elastically in contact with the arm portion 34 of the first contact 30 made of a metal conductor such as a plate. That is, as shown in FIG. 3 (a), the protrusion 20 has the stopper 26 abutting against the front restricting portion 16 a of the storage portion 16 by the elastic piece 40 and the arm portion 34, and the tip 22 thereof to the pachinko ball passage 12. Always energized in the direction to face. The arm portion 34 of the first contact 30 is formed with a contact portion 34a bent to the opposite side to the surface with which the rear end portion 24 of the projection 20 abuts, and the contact portion 34a functions as a contact.

  As shown in FIG. 1, the switch body 10 is symmetrical to the first contact 30 on the opposite side of the projection 20 (in the direction away from the pachinko ball path 12) across the arm portion 34 of the first contact 30. The second contact 32 made of a conductor such as metal formed in a substantially L shape is arranged so that the contact arm 36 faces the arm portion 34 of the first contact 30 in parallel with a predetermined interval. As shown in FIG. 3A, the first contact 30 and the second contact 32 are always held in a state in which the contact portion 34 a of the first contact 30 is released from the mechanical contact away from the second contact 32. The detection switch is set to be in an off state. Then, when the projection 20 is pressed by the pachinko ball 4, the arm portion 34 of the first contact 30 is bent in the direction of the second contact 32 by the backward movement of the projection 20, as shown in FIG. The contact portion 34 a of the first contact 30 contacts the contact arm 36 of the second contact 32. Thereby, the said detection switch will be in an ON state, and the passage of the pachinko ball 4 will be detected.

  Then, when the pressing state of the projection 20 due to the passage of the pachinko ball 4 is released, the elastic piece 40 and the first piece that always urges the tip portion 22 of the projection 20 in the direction facing the pachinko ball passage 12. The tip 22 of the projection 20 is returned to the detection position of the pachinko ball passage 12 by the elasticity of the contact 30.

  Note that the movement amount of the protrusion 20 is a length by which the contact / separation state of the first contact 30 and the second contact 32 changes depending on whether the tip 22 is pressed with the pachinko ball 4 or not. Set to

(Operation of Example)
Next, the operation of the pachinko ball passage detection switch according to the embodiment will be described. When the detection switch is in a power-on state, the contact portion 34a of the first contact 30 is not in contact with the contact arm 36 of the second contact 32 as shown in FIG. 3 (a). ing. Under this condition, the pachinko balls 4 that circulate in the pachinko ball flow passage 2 arrive at the detection switch disposed at a required location of the flow passage 2.

  When the pachinko ball 4 passes through the pachinko ball passage 12 of the detection switch, as shown in FIGS. 2 and 3 (b), the protrusion 20 is pressed and moved toward the first contact 30, and the elastic piece 40 is moved. Is bent toward the first contact 30 and the contact arm 34 of the first contact 30 is bent toward the second contact 32. As a result, the contact portion 34a of the first contact 30 contacts the contact arm 36 of the second contact 32, and the first contact 30 and the second contact 32 mechanically contact each other, so that the detection switch is turned on. The passage of the pachinko ball 4 is detected.

  Next, when the pachinko ball 4 passes through the pachinko ball passage 12, as shown in FIG. 3 (a), the protrusion 20 is instantaneously under the elastic action of the elastic piece 40 and the arm portion 34 of the first contact 30. Pushed back, the tip 22 protrudes into the pachinko ball passage 12 in a state where the pachinko ball 4 can be detected. As a result, the contact portion 34a of the first contact 30 is separated from the contact arm 36 of the second contact 32, the mechanical contact between the first contact 30 and the second contact 32 is released, and the detection switch is turned off. The passing detection of the pachinko ball 4 is completed.

  Since the detection switch of the embodiment holds the tip portion 22 of the protrusion 20 in a state of being urged by the elastic piece 40 in the direction facing the pachinko ball passage 12, the pachinko ball 4 that circulates through the pachinko ball flow passage 12. Can easily prevent the first contact 30 and the second contact 32 from being brought into an electrically conductive state due to vibration generated when they collide with the inner surface of the flow passage 12 or the switch body 10 of the detection switch. . That is, even if vibration or the like occurs in the switch body 10 due to a collision of the pachinko ball 4 or the like, the elastic piece 40 fitted to the protrusion 20 reduces the impact, thereby preventing the protrusion 20 from moving. Thus, the first contact 30 does not contact the second contact 32. Therefore, occurrence of erroneous detection due to vibration or the like can be prevented and reliability can be improved.

  Further, since the detection switch performs the return operation of the protrusion 20 to the detection position by the elasticity of the elastic piece 20 provided on the protrusion 20, the first contact 30 pushes the protrusion 20 back. Elasticity for is not needed. Therefore, it is sufficient that the first contact 30 has only elasticity for releasing the contact between the contacts, and the adverse effect of chattering due to the addition of excessive elasticity can be suppressed.

  Further, since the elastic piece 40 for independently controlling the movement of the protrusion 20 is provided, it is possible to set the protrusion 20 to operate optimally only by adjusting the elasticity of the elastic piece 40. . That is, for example, when a plate spring is used as the elastic piece 40, selection of elasticity due to the material of the elastic piece 40, adjustment of elasticity by the thickness of the plate spring, and the like can be considered.

(Example of change)
In the pachinko ball passage detection switch in the embodiment, the arm part 34 of the first contact 30 is made of a material having elasticity. However, like the pachinko ball passage detection switch according to the modification shown in FIG. The first contact point 30 with which the rear end portion 24 abuts may be configured to always urge the front end portion 22 of the projection 20 toward the pachinko ball passage 12 by the elastic member 42. That is, one end of the arm portion 34 of the first contact 30 is pivotally supported while maintaining electrical continuity, and the other end is always supported by the elastic member 42 such as a coil spring at the tip 22 of the projection 20. Is urged in a direction facing the pachinko ball passage 12. Therefore, when the pachinko ball 4 passes through the pachinko ball passage 12, the tip 22 is pressed by the pachinko ball 4 and moves in the direction of the first contact 30, and the rear end 24 presses the first contact 30. To do. The first contact 30 swings like a seesaw with a pivoted point as a fulcrum, and the first contact 30 and the second contact 32 are mechanically brought into electrical contact with each other. And when the pressing state of the projection 20 due to the passage of the pachinko ball 4 is released, the elastic piece 40 and the elastic member that always urges the tip 22 of the projection 20 in the direction facing the pachinko ball passage 12. The tip 22 of the projection 20 is returned to the detection position of the pachinko ball passage 12 by the elasticity of 42. Accordingly, the contact state of the first contact 30 with the second contact 32 is released by the elastic force of the elastic member 42.

(Another change example)
FIG. 5 shows a pachinko ball passage detection switch according to another modified example. The protrusion 21 is formed on a V-shaped main body 23 and one end of the main body 23. A front end 22 facing the pachinko ball passage 12, a rear end 24 formed at the other end of the main body 23 and abutting the first contact 30, and a groove 25 provided in the vicinity of the front end 22. The main body 23 is pivotally supported via a shaft 28 at a V-shaped bending point. Further, the other end of the elastic piece 41 having one end fitted into the groove 25 of the protrusion 21 is inserted into the restriction groove 17 formed in the switch body 10, and the position of the elastic piece 41 is restricted. Is configured so as to always urge its tip 22 in a direction facing the pachinko ball passage 12.

  That is, in another modification shown in FIG. 5, when the pachinko ball 4 passes through the pachinko ball passage 12, the tip portion 22 is pressed, and the projection 21 swings like a seesaw with the shaft 28 as a fulcrum. In addition, the elastic piece 41 is bent, and the rear end portion 24 bends the first contact 30 toward the second contact 32, thereby mechanically contacting the first contact 30 and the second contact 32. Conductive. When the pressing state of the projection 21 due to the passage of the pachinko ball 4 is released, the elastic piece 41 and the first piece which always urges the tip 22 of the projection 21 in the direction facing the pachinko ball passage 12. The tip 22 of the projection 21 is returned to the detection position of the pachinko ball passage 12 by the elasticity of the contact 30.

  As the pachinko ball passage detection switch of the embodiment and the modified example, a normally open type switch in which the contact is electrically connected when the pachinko ball 4 passes and is always opened electrically has been described. However, the present application is not limited to this, and is always in an electrically conductive state in which both the contacts 30 and 32 are in mechanical contact, and one of the contacts 30 is moved by the movement of the protrusion 20 as the pachinko ball 4 passes. It may be of a normally closed (normally closed contact type) type that is configured to be separated from the other contact 32 and to cut off the electrical continuity between the contacts 30 and 32.

1 is a plan view showing a pachinko ball passing detection switch according to a preferred embodiment of the present invention with a part cut away; FIG. It is explanatory drawing which shows the state which detects the passage of the pachinko ball by the pachinko ball passage detection switch disposed in the pachinko ball flow passage of the pachinko machine. 1 shows the internal structure of the pachinko ball passage detection switch shown in FIG. 1, wherein (a) shows a state in which the protrusion is not pressed by the pachinko ball, and (b) shows a state in which the protrusion is pressed by the pachinko ball. It is a principal part enlarged plan view shown. It is a top view showing a pachinko ball passage detection switch according to a modified example with a part cut away. It is a top view which shows a pachinko ball passage detection switch according to another modified example with a part cut away. It is a top view which shows a pachinko ball passage detection switch according to the prior art with a part cut away.

Explanation of symbols

12 Pachinko ball passages, 20 projections, 21 projections (of another modification) 22 tip (tip), 24 rear end (rear end), 30 first contact, 32 second contact 34 arm, 40 elastic piece, 41 Elastic piece (of another modification), 42 Elastic member

Claims (3)

Pachinko ball passage (12) that allows passage of pachinko balls, and protrusions (20, 21) that always face the tip (22) in this pachinko ball passage (12) and are pressed and moved by the passage of the pachinko balls. And a first contact (30) and a second contact (32) disposed outside the pachinko ball passage (12), and the first contact (30) is moved by the movement of the protrusions (20, 21). And a pachinko ball passing detection switch configured to close or open the second contact (32),
Elastic pieces (40, 41) provided between the front end (22) and the rear end (24) of the protrusion (20, 21);
An arm portion (34) provided on the first contact (30) so as to contact the rear end (24) of the protrusion (20, 21) and made of a metal conductor formed in a plate shape;
The protrusions (20, 21) are elastically urged by the elastic pieces (40, 41) and the arms (34), so that the tip (22) of the protrusions (20, 21) is always at the pachinko ball passage. A pachinko ball passage detection switch, characterized in that it can be exposed to (12).   One end of the arm portion (34) is pivotally supported by the first contact (30), and the other end is always fixed to the tip of the protrusion (20, 21) by an elastic member (42). The pachinko ball passage detection switch according to claim 1, wherein the pachinko ball passage detection switch is biased in a direction to face the pachinko ball passage (12).   The pachinko ball passage detection switch according to claim 1 or 2, wherein the elastic piece (40, 41) is a leaf spring.

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