JP2006210175A - Gripper pushbutton switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gripper pushbutton switch, in which a protruding amount of the pushbutton can be switched simply and lightly without using a special tool. <P>SOLUTION: An adjusting ring that can be operated rotatably is inserted between a case main body of the gripper pushbutton switch and a top cover that is fixed to this case main body, and the protruding amount of the pushbutton can be adjusted in two stages through making the switching unit including the pushbutton move forward or backward in the top cover along its center line by turning the adjusting ring. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a grip push button switch, and more particularly, to a grip push button switch capable of adjusting a protrusion amount of the push button in two stages according to a patient.

In the nurse call device, the grip push button switch used by the patient to call the nurse is formed in a cylindrical shape that is easy for a patient who is sleeping on a bed in a hospital room to hold it by hand. The switch is activated by pressing it with a thumb or the like.

A general grip push button switch is designed for use by patients who can move their fingers freely, preventing malfunction, that is, when the grip push button switch is dropped on the floor, the tip of the push button is pushed. In order to prevent the switch from malfunctioning, the operation surface of the push button tip is designed to be substantially flush with the tip surface of the main body that houses the push button.

In order to operate such a grip push button switch, it is necessary to push the operation surface at the tip of the push button into the tip opening of the main body, which is particularly difficult for patients who have trouble with finger movement. Become. Therefore, there is one that can adjust the protrusion amount of the push button in two stages so that a person who has no trouble with the movement of fingers can be used (Patent Document 1).

.... JP-A-57-087018

According to the invention described in Patent Document 1, the convex portion of the large annular recess of the push button and the boss concave portion of the contact piece receiving base are pressed by two types of large and small springs, a push-up spring and a push-down spring. It is necessary to adjust the protruding amount of the push button by rotating the push button in the circumferential direction while being pressed against each other, but it must be turned against the pressing force of the two types of springs. And, the protruding amount of the push button is almost zero with respect to the holding frame in the recessed position, and even at the protruding position, it is 2 to 3 mm at most, so it is difficult to turn the push button with a finger on the peripheral surface. there were.

Therefore, the thumb of the thumb is applied to the upper surface of the push button and turned. However, the pressing force by the thumb belly is divided into the circumferential direction and the axial direction, and the axial pressing force inhibits the rotational force. Actually, it is impossible to turn the top of the push button with the thumb belly.

Therefore, as shown in FIG. 2 of Patent Document 1, it is necessary to devise such as forming a small circular recess at the lower part of the nurse mark and inserting a pen tip of a mechanical pen into the recess and turning it. did.

It is an object of the present invention to provide a gripping push button switch that eliminates the above-described drawbacks and can easily and easily switch the protrusion amount of the push button without using a special tool.

The present invention provides a switch unit including a push button by inserting an adjustment ring that can be rotated between a case main body of a grip push button switch and a top cover fixed to the case main body, and turning the adjustment ring. In the top cover, the protrusion amount of the push button can be adjusted in two stages by moving forward or backward along the center line.

Further, according to the present invention, the protrusion amount of the push button can be appropriately determined only by turning the adjustment ring and aligning the protrusion mark or the dent mark displayed on the peripheral surface with the alignment mark of the top cover. It is characterized by doing so.

According to the present invention, the projection amount of the push button can be easily and easily switched without using a special tool.

FIG. 1 is an external view of a grip push button switch showing one embodiment of the present invention.
In the figure, reference numeral 1 denotes an elongated cylindrical case body processed into a shape that can be easily held by hand, and the adjustment ring 2 is rotatably fitted between the case body 1 and the top cover 3.

Projecting marks 8 and dent marks 9 are displayed at predetermined intervals on the outer peripheral surface of the adjustment ring 2.

On the top cover 3, an alignment mark 7 indicating a stop position of the protruding mark 8 and the recessed mark 9 of the adjustment ring 2 is displayed.

Reference numeral 4 denotes a push button operated when calling a nurse or the like. When the adjustment ring 2 is rotated, the protruding mark 8 faces the alignment mark 7 of the top cover 3 as shown in the figure. It protrudes from the upper end surface of the cover 3 by about 2 mm. On the other hand, when the adjustment ring 2 is rotated, the push button 4 is retracted until the depression mark 9 faces the alignment mark 7 of the top cover 3 until it is substantially flush with the upper end surface of the top cover 3.

A cord 5 is extended to the outside from the lower end of the case body 1 through a protective bushing 6, and an outlet (not shown) for connection to a wall-mounted nurse call slave or the like is connected to the tip. The

FIG. 2 is an assembly view of the grip push button switch.
The case main body 1 is vertically divided into two parts and assembled together by fitting the divided surfaces together. A second guide that protrudes in a spiral shape is formed inside the adjustment ring 2 placed on the upper end portion of the case body, and the first guide formed on the outer periphery of the switch holder 11 constituting the switch unit 10. It fits with the guide 11A.

As shown in the figure, the adjustment ring 2 is placed on the upper end surface of the case body 1, and the first guide 11A formed on the outer periphery of the lower end of the switch unit 10 is fitted from above the second guide 2A formed on the inner periphery thereof. The switch unit 10 is attached to the adjustment ring 2 while aligning.

Further, the top cover 3 is covered from above the switch unit 10, and a locking hole 12 of a tongue-like piece projecting downward from the outer periphery of the lower end of the top cover 3 is formed inwardly on the upper peripheral wall of the case body 1. As shown in FIG.

In FIG. 2, a vertically long anti-rotation rib 3 </ b> A is formed at an appropriate position on the inner peripheral wall of the top cover 3, and the anti-rotation rib 3 </ b> A is formed on the annular rib on the outer periphery of the push button 4. The push button 4 is prevented from rotating by being fitted in the groove 4A.

FIG. 3 is an exploded perspective view of the switch unit 10.
As shown in the figure, the switch unit 10 has a switch holder 11 that can be divided into two parts, and is assembled as a single unit by abutting and fitting the divided surfaces.
In the vicinity of the split surface of the switch holder 11, there is provided a switch locking portion 14 composed of a pair of recesses formed to hold and fix both end portions of the switch body 12.
The coil spring 16 is fitted from the upper outer periphery of the switch holder 11, and its lower end is locked to an outward spring receiving step formed on the outer periphery of the switch holder 11.

The push button 4 is attached to the switch holder 11 so as to wrap the spring from above the coil spring 16, and the engagement hole 18 formed in a tongue-like piece projecting downward from the outer peripheral wall of the push button 4 is externally attached from the outer peripheral wall of the switch holder 11. By engaging the locking projection 17 protruding in the direction, the switch holder 11 is locked.
Note that the locking protrusion 17 of the switch holder 11 can be relatively moved in the vertical direction within the engagement hole of the push button 4 and the relative movement range is restricted.
In this way, the push button 4, the coil spring 16, the switch body 15, and the switch holder 11 are assembled as a single unit to form the switch unit 10.

In the normal state, the push button 4 is urged upward with respect to the switch holder 11 by the pressing force of the coil spring 16 locked by the spring receiving stepped portion, and the engagement protrusion 17 has the lower edge of the engagement hole 18. The state locked by is held.

In this state, a fixed separation distance can be secured between the tip of the protruding piece (not shown) protruding downward from the bottom surface of the top plate of the push button 4 and the actuator 16 of the switch body 15. Yes. On the other hand, when the push button 4 is pushed downward against the repulsive force of the coil spring 13, the push button 4 moves downward in the switch holder 11, and the operating element 16 is pushed by the protruding piece, and the switch body 11. Works.

Note that when the push button 4 is pushed down as described above, the engagement protrusion 15 of the switch holder 11 can move upward only in the engagement hole 14, and the range of movement of the push button 4 is the engagement protrusion 17. Is regulated by contacting the upper end edge of the engagement hole 18. Therefore, even if an excessive pressing force is applied to the push button 4, an excessive force is not applied to the switch body 15.

As described with reference to FIGS. 2 and 3, the push button 4 is prevented from rotating in the top cover 3 fixed to the case body 1.
Therefore, when the adjustment ring 2 is turned, the switch unit 10 including the switch holder 11 moves forward or backward along the center line in the top cover 10 by the interaction between the first guide 11A and the second guide 2A.
As a result of the entire switch unit 10 moving forward or backward, the top of the push button 4 appropriately protrudes or dents from the tip surface of the top cover 3.
An appropriate protrusion amount is determined by adjusting the rotation amount of the adjustment ring 2 so as to align the alignment marks 7, 8, 9 described above.

1 is an external view of a grip push button switch showing one embodiment of the present invention. The assembly figure of the grip pushbutton switch in one Example of this invention. The exploded view of the switch unit in one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case body 2 Adjustment ring 2A 2nd guide 3 Top cover 4 Push button 5 Cord 6 Protective bushing 7 Alignment mark 8 Protrusion mark 9 Recess mark 10 Switch unit 11 Switch holder 11A 1st guide 12 Locking hole 13 Locking protrusion 14 Switch Locking part 15 Switch body 16 Coil spring 17 Locking protrusion

Claims (2)

A switch having a case body, a switch unit having a push button, a top cover fixed to the case body, and an adjustment ring that is rotatably inserted between the case body and the top cover; The unit can be fixed by sandwiching the switch body from both sides on the inside, and a split type switch holder having a spiral first guide on the outer periphery, and a push button locked to the switch holder so as to be slidable in the axial direction And a coil spring that is housed inside the switch holder and presses the push button, the switch body can be closed by pushing the push button against the pressure of the coil spring, and the adjustment ring Has a spiral second guide fitted to the first guide in the switch holder, and the switch ring is operated by rotating the adjustment ring. The protrusion of the push button protruding from the front end surface of the top cover can be adjusted in two stages by moving the head forward or backward along the center line by the interaction of the first guide and the second guide. Grip push button switch characterized by that. An alignment mark is displayed on the top cover, and a protrusion mark that indicates a state where the push button protrudes and a dent mark that indicates a state where the push button does not protrude are displayed on the adjustment ring, and the adjustment ring rotates. 2. The grip according to claim 1, wherein, in operation, the rotation stop position can be determined by aligning the alignment mark on the top cover side with the protruding mark or the recessed mark on the adjustment ring side. Push-button switch.

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