JP2010262819A - Push button switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push button switch in which structure is simplified without damaging design, and a malfunction preventing function is included. <P>SOLUTION: When only a button 8 is pushed, a plunger 6 is locked, operation of the push button switch is made impossible, when the button 8 is pushed together with an unlocking unit 5, a rotator 3 is inclined, the plunger 6 is unlocked, the operation of the push button is made possible, troublesome lid opening is eliminated, and the same level operation as that of a push button including no malfunction preventing function is done. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a push button switch and relates to a push button switch having a malfunction prevention function.

  Conventional push button switches are provided with a wall (barrier) on the side of the button (see Non-Patent Document 1 below) as a means for preventing malfunction, or provided with a stopper and an unlocking operator on the operation member. Some operation members are locked by the stopper, and the lock is released when the unlocking operation element is pressed (see Patent Document 1 below).

JP 2001-283667 A

Nippon Switchgear Co., Ltd. “2008 General Catalog”

  However, the above-mentioned conventional malfunction prevention means has a wall on the side of the button, and when the switch is mounted continuously, a gap is made by the thickness of the wall, so that the design is impaired, and a lock mechanism is provided. The structure has become complicated, and it has been difficult to reduce assembly man-hours.

  In view of the above situation, an object of the present invention is to provide a pushbutton switch having a malfunction prevention function with a simple structure without impairing design.

In order to achieve the above object, the present invention provides
In a pushbutton switch that opens and closes a contact mechanism portion provided in a case by a plunger fitted to the button by pressing the button, a concave portion is formed on the upper surface of the button, and a substantially center of the concave portion A hole is provided in the part, and the lock releaser is arranged in the hole so as not to protrude from the upper surface of the button, and is coupled to the rotor via a connecting rod, and the rotor is tiltably fitted to the case. When only the button is pressed, the two locking pieces provided inside the plunger come into contact with the upper surface of the rotor and the plunger is locked, so that the contact mechanism cannot be opened and closed together with the button. When the unlocking element is pressed, the connecting rod descends in conjunction with the unlocking element, and when the connecting rod descends, the rotor is tilted so that the locking piece is moved forward. Because the plunger is unlocked without abutting on the rotor, characterized in that it is possible to open and close the contact mechanism.

According to the present invention, the following effects can be achieved.
(1) Since the operation cannot be performed unless the unlocking element at the center of the button is pressed, malfunction can be prevented.
(2) The lock can be released by simply pressing the button in the same manner as a pushbutton switch not equipped with a malfunction prevention mechanism.
(3) Since the number of parts is small and the structure is simple, it can be easily assembled.
(4) Since assembly is easy, the number of assembly steps can be reduced.
(5) Even if the switch is mounted continuously, the design of the panel is not impaired.

It is a disassembled perspective view of the pushbutton switch showing the Example of this invention. It is a perspective view of the pushbutton switch showing the Example of this invention. It is sectional drawing of the pushbutton switch showing the Example of this invention.

  According to the present invention, the switch can be operated by pressing the lock releaser together with the button. Therefore, malfunction can be prevented with a simple structure.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is an exploded perspective view of a pushbutton switch representing an embodiment of the present invention, FIG. 2 is a perspective view of a pushbutton switch representing an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the pushbutton switch representing an embodiment of the present invention. FIG. 3A shows the state before the operation, FIG. 3B shows the time when the operation is started, FIG. 3C shows the state during the operation, and FIG. 3D shows the time when the operation is completed.

  In these figures, 1 is a case, 2 is a switch element provided in the case 1, 3 is a rotor fitted to the case 1 so as to be tilted, and 4 is a linkage fitted to the rotor 3 so as to be tilted. The bar 5 is a lock releaser for fitting the connecting rod 4 in a tiltable manner, 6 is a plunger for opening and closing the switch element 2, 7 is fitted so as to cover the case 1, and the plunger 6 is installed in the case 1 8 is a button that fits the plunger 6, 9 is a coil spring that biases the plunger 6 upward, and 10 is a coil spring that holds the rotor 3 in a position where the plunger 6 is locked. A recess 8 a is formed on the upper surface of the button 8, and a storage hole 8 b in which the unlocking element 5 is stored is formed in a substantially central portion of the recess 8 a. A fitting projection 3b that fits with the case 1 is formed on the side surface of the rotor 3, and can be tilted with the fitting projection 3b as a fulcrum. The plunger 6 has a substantially cylindrical shape, and two lock pieces 6 a are provided inside the plunger 6 at an interval narrower than the width of the long side surface of the rotor 3.

  The switch element 2 and the coil spring 9 are disposed on the case 1, and one of the coil springs 10 is engaged with the engagement protrusion 1 b formed on the bottom surface of the case 1. The fitting projection 3a of the rotor 3 and the fitting hole 4a of the connecting rod 4 are fitted so as to be tiltable, and the fitting protrusion 4b of the connecting rod 4 and the fitting hole 5a of the lock releaser 5 are fitted so as to be tilted. Combined. The other end of the coil spring 10 is engaged with the engagement hole 3c of the rotor 3 in which the connecting rod 4 and the lock releaser 5 are fitted, and the fitting protrusion 3b is tiltably fitted into the fitting hole 1a of the case 1. The The plunger 6 is disposed in the case 1 so that the connecting rod 4 and the lock releaser 5 are disposed between the two lock pieces 6 a, and the fitting hole 7 a and the fitting protrusion 1 c so that the cover 7 covers the case 1. Are fitted. Then, the push-button switch is formed by fitting the fitting hole 8c of the button 8 and the fitting claw 6b of the plunger 6 so that the lock release element 5 is housed in the housing hole 8b formed in the recess 8a of the button 8. Is completed.

  In the pushbutton switch of the present invention configured as described above, when only the button 8 is pressed, the lock piece 6a of the plunger 6 comes into contact with the upper surface of the rotor 3, so that the plunger 6 cannot be lowered, and the switch element 2 cannot be operated. When the lock releaser 5 is pressed together with the button 8, the connecting rod 4 is lowered in conjunction with the lock releaser 5, and as the connecting rod 4 is lowered, the rotor 3 tilts with the fitting protrusion 3b as a fulcrum, Since the rotor 3 is tilted and accommodated between the two lock pieces 6a, the lock piece 6a does not contact the upper surface of the rotor 3, so that the plunger 6 is lowered and the switch element 2 is operated.

  Thus, in the pushbutton switch shown in this embodiment, when only the button 8 is pressed, the plunger 6 is locked and cannot be operated, and when the lock releaser 5 is pressed together with the button 8, the rotor 3 tilts and the plunger Since the structure is made operable by releasing the lock 6, it has a feature that malfunction can be prevented.

  In this embodiment, the button is square, but it may be round, and the switch element may be another contact mechanism. In addition, although the upper surface of the unlocking element is disposed so as to slightly protrude from the concave portion of the button, it may be disposed so as not to protrude, or the button may be illuminated or click feeling may be provided. Can be considered.

  In addition, this invention is not limited to said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The pushbutton switch of the present invention can be used as a pushbutton switch having a malfunction prevention function with a simplified structure without impairing design.

DESCRIPTION OF SYMBOLS 1 Case 1a Fitting hole 1b Engagement protrusion 1c Fitting protrusion 2 Switch element 3 Rotor 3a, 3b Fitting protrusion 3c Engagement hole 4 Connecting rod 4a Fitting hole 4b Fitting protrusion 5 Lock release element 5a Fitting hole 6 Plunger 6a Locking piece 6b Fitting claw 7 Cover 7a Fitting hole 8 Button 8a Recessed part 8b Storage hole 8c Fitting hole 9, 10 Coil spring

Claims (1)

In a pushbutton switch that opens and closes a contact mechanism portion provided in a case by a plunger fitted to the button by pressing the button, a concave portion is formed on the upper surface of the button, and a substantially center of the concave portion A hole is provided in the part, and the lock releaser is arranged in the hole so as not to protrude from the upper surface of the button, and is coupled to the rotor via a connecting rod, and the rotor is tiltably fitted to the case. When only the button is pressed, the two locking pieces provided inside the plunger come into contact with the upper surface of the rotor and the plunger is locked, so that the contact mechanism part cannot be opened and closed together with the button. When the unlocking element is pressed, the connecting rod descends in conjunction with the unlocking element, and when the connecting rod descends, the rotor is tilted so that the locking piece is moved forward. Pushbutton switch, characterized in that it is possible to open and close the contact mechanism for the plunger is unlocked without contact to the rotor.

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