KR200476437Y1 - The flush type push button switch - Google Patents

Abstract

The present invention relates to a hermetically sealed pushbutton switch, and its main purpose is to prevent safety accidents caused by abrupt machine start or stop by preventing the protruding button from being arbitrarily rotated or operated.
The present invention made for this purpose relates to a pushbutton switch for connecting or disconnecting a contact that is resiliently urged by an elastic means and a pushbutton provided on one side of the contact,
Wherein the push-
A fixing device provided on one side of the contact;
A pusher provided in the fixing device in a longitudinal direction so as to be in contact with the contact at one end and having a cap at the other end;
A switch head screwed to one side of the fixing device;
And a push rod which is provided in the longitudinal direction of the switch head and connects or disconnects the contact by pressing the pusher in response to the depression of the button.
Thereby, it is advantageous to prevent safety accident caused by abrupt machine operation or stop by preventing the projected button from being arbitrarily rotated or operated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a push-

The present invention relates to a push button switch, and more particularly, to a push button switch wherein a button provided with a mark such as "ON" or "OFF " rotates so as to prevent the button from being easily identified, The present invention relates to a buried push-button switch for preventing a safety accident caused by a malfunction of a machine which is generated by being pressed.

2. Description of the Related Art Generally, various push button switches are provided for controlling the operation of mechanical devices installed on automation lines or large-scale production lines.

A push button switch is a general term for a switch that opens and closes a contact by pressing a button. When a button is pressed, the contact is connected (a contact) and conversely the contact is blocked (b contact) To mechanically hold a mechanical device (not shown), to return to the original state by pressing once, and to stop the operation of the mechanical device.

1A) and a push-button switch PS as shown in Fig. 1B are representative thereof, and the contents thereof are as follows.

 Referring to the drawings, a conventional push button switch PS (hereinafter referred to as a "switch") is provided with contacts SC1 and SC2 in a case CS (or a panel) The buttons BT1 and BT2 are provided on one side of the contact points SC1 and SC2.

The contact points SC1 and SC2 are provided with resilient means SR so that elasticity acts on one side to facilitate the switching operation by the buttons BT1 and BT2.

As described above, the switch SW has the contact SC1 provided at one side of the button BT1 indicated as "ON " and the contact SC1 provided at one side of the button BT2 indicated as" Contact (SC2) is a kind of "b" contact.

In other words, when the "ON" button BT1 is pressed, the contact SC1 is connected to operate a mechanical device (not shown), and when the "OFF" button BT2 is pressed, The contact SC1 is interrupted and the operation of the mechanical device is stopped.

However, the above-mentioned conventional switch has a structure in which the button is protruded to one side of the case, and the contact is arbitrarily connected or blocked by the operator who does not intend to operate the switch at all, for example, As a result, there is a problem that unexpected safety accidents are caused as the mechanical device is stopped or operated.

Further, the above-mentioned button arbitrarily rotates during the switch operation, and "ON" is displayed as "NO", so that there is a problem that the operator is not easily identified.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to prevent a safety accident from occurring by preventing a protruding button from being arbitrarily operated.

Another object of the present invention is to prevent the button from rotating arbitrarily so that the operator can easily identify the button.

Another object of the present invention is to improve the productivity by eliminating the cause of malfunction which can be easily identified by the operator and is arbitrarily operated.

The present invention, made for this purpose,

A pusher which is provided in a longitudinal direction so as to be in contact with the contact and has a cap at the other end in the fixing device; And a push rod which is provided in the longitudinal direction of the switch head and which connects or disconnects the contact by pressing the pusher in response to the depression of the button,

The fixing device includes:
A first end portion which is symmetrical with respect to the longitudinal direction on both sides and has at least one engaging projection, and a second end portion which is opposed to the opened one side of the first end portion, A screw portion formed on the outer periphery of the structure, and a second end integrally formed with a square hole having a square hole formed inside the first end portion;
The pusher
A guide formed in a square shape so as to be easily slidable through a square hole formed in the edge of the fixing device and integrally formed at one end of the guide and having a first and a second support portion in a cylindrical upper end, And a cap provided with a flange on an end face of a disc-shaped section so as to be fitted to the outside of the second support portion of the support portion and having a second engagement portion in a direction perpendicular to the center of one side;
The push rod
A screw formed at one end of a circular rod shape to be engaged with a tab formed at the center of the button, a detent ring groove formed so as to be able to engage the detent ring in a longitudinally intermediate portion in the form of a circular rod, And a first coupling part formed on the second coupling part and coupled with the second coupling part;
Wherein the engaging projection of the fixing device
An inclined portion having an inverted triangle that widens toward the upper side is formed so that the coupling hole can be easily engaged with the coupling hole of the coupling bracket provided at one side of the contact.

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Further, in the switch head,
An arm and a male thread portion respectively formed on the inner and outer peripheries of a cylindrical structure;
A rod guide having a base formed integrally with the switch head at an intermediate portion of the switch head and a guide bush formed in a longitudinal cylindrical shape at the center of the base; And a tool support portion formed of polygons having a square or more.

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In addition,

Further comprising a square hole,

The end portion of the push rod further includes a rectangular projection formed so as to pass through the rectangular hole and to be fixed.

As described above, the buried push-button switch according to the present invention prevents the protruded buttons from being operated arbitrarily, thereby preventing a safety accident from occurring.

In addition, it is possible to prevent the button from arbitrarily rotating so that the operator can easily identify the button.

Further, since the operator can easily identify and operate arbitrarily, the cause of the malfunction that occurs is eliminated, and the productivity is improved.

FIG. 1A is a perspective view showing the external shape of a conventional push button switch,
1B is a cross-sectional view taken along the line " A " - " A &
2 is an exploded perspective view showing the structure of a push button switch according to the present invention,
3A and 3B are sectional views sequentially showing a method of assembling the push button switch according to the present invention,
4 (a) and 4 (b) are cross-sectional views showing the operation and effect of the push-button switch according to the present invention,
5 and 6 are a perspective view and a side sectional view showing another embodiment of the push button switch according to the present invention.

2, the push button switch 10 according to the present invention includes a fixation device 100, a pusher 200, a switch head 300, a button 400, and a push rod 500. Hereinafter, The same components as those in the prior art will be described with the same names but with different reference numerals)

The fastening device 100 comprises first and second ends 110 and 130.

The first end portion 110 has a quadrangular box shape in which a portion in contact with the contact 50 on one side is opened, and is provided with a coupling projection 111 symmetrically on both sides in the longitudinal direction.

The engaging projection 111 has an inverted triangular inclined portion extending upward toward the upper side in the illustrated direction so that the engaging projection 111 can be easily engaged with the engaging hole 52 of the engaging bracket 51 provided at one side of the contact 50 112 are formed.

The second end 130 is integrally provided at the center of one side of the first end 110.

The second end portion 130 has a threaded portion 131 to facilitate screwing with a switch head 300 described later on the outer periphery of a cylindrical structure integrally formed at the other side opposite to the opened one side of the first end portion 110, Respectively.

In addition, a flange 133 is integrally formed on the inner side of the first end portion 110, that is, the lower end of the second end portion 130 in the illustrated direction. The flange 133 has a square hole 134 So that the guide 210 of the pusher 200, which will be described later, penetrates and is easily slidable in the longitudinal direction, but is prevented from rotating.

The pusher 200 includes a guide 210, a support 230, and a cap 250.

The guide 210 is formed in a rectangular shape so as to be easily slidable in the square hole 134, and a locking protrusion 211 is symmetrically provided on both sides of the lower portion.

The latching protrusion 211 is provided with a cut-out portion 212 to facilitate insertion of the latching protrusion 211 into the square hole 134, Elasticity.

The supporting part 230 is integrally formed at one end of the guide 210. The supporting part 230 is formed in a cylindrical shape whose upper side is opened at its upper end and has first and second supporting parts 231 and 233 )

The first support portion 231 is formed in a ring shape so as to be close to the inner circumference of the second end portion 130 of the fixing device 100 and to facilitate sliding.

The second support portion 233 is integrally formed on the upper side spaced apart from the first support portion 231 by a predetermined distance and includes an inclined guide 234 having an inverted triangular shape in cross section to facilitate insertion of a cap 250 Respectively.

The cap 250 has a flange 250a formed on a disc-shaped rim and has a structure in which the cap 250 is firmly supported on the end of the inclined guide 234 of the second support portion 233 to prevent separation and rotation.

A second coupling hole 251 is formed in a direction perpendicular to the upper surface of the cap 250. The second coupling hole 251 is formed in the end of the push rod 500 integrally coupled to the button 400, And is coupled with the first coupling member 550 to prevent the button 400 from rotating.

Meanwhile, the switch head 300 is screwed to the second end 130 of the fixing device 100 described above.

The switch head 300 is composed of an inner and an outer male and female threaded portions 310 and 330 and a rod guide 350 and a tool support portion 370 formed in a cylindrical structure.

The female threaded portion 310 is formed on the inner periphery of one end of the switch head 300 so as to be screwed to the threaded portion 131 formed on the outer periphery of the second end portion 130 and has a male threaded portion 330 formed on the outer periphery thereof have.

The rod guide 350 includes a base 351 integrally formed in a disc shape at a middle portion of the switch head 300 and a guide bush 353 formed in a cylindrical shape in the longitudinal direction at the center of the base 351.

The push rod 500, which is integrally coupled with the button 400 described later, is inserted into the rod guide 350 to facilitate sliding.

The tool support portion 370 has a hexagonal nut shape when viewed from the plane with reference to the illustrated direction, and is easy to be fastened by a spanner (not shown) in a later-described operation.

The tool support portion 370 may have a hexagonal shape or a polygonal shape of a square or more and support a tool such as a spanner or the like.

The hexagonal nut 380 and the fixing nut 390 are provided on the male threaded portion 330 of the switch head 300. The hexagonal nut 380 and the fixing nut 390 are connected to each other by a mechanical device So that the panel can be easily installed.

The hexagonal nut 380 can achieve the object of the present invention by using a nut for a rolling ring bearing (KS B 2004-82, JIS B 1554-66) in addition to the hexagonal nut shown as manufacturing technology of the related art Of course.

On the other hand, the button 400 is formed in a disc shape having a "┗" -shaped cross section, in which a pattern 410 is adhered and a tab 430 is formed in the center of the bottom.

The tab 430 and the screw 510 at one end of the push rod 500, which will be described later, are combined to form one combined structure.

The push rod 500 is formed in the shape of a rod having a circular cross section and is formed in the order of the screw 510, the detent ring groove 530 and the first coupling hole 550.

The screw 510 is formed to be screwed with the tab 430 formed at the center of the button 400. The stop ring groove 530 is formed in the guide bush 353 of the rod guide 350, So that the stop ring 531 is fitted.

The first coupling member 550 is formed to be able to engage with a second coupling member 251 formed on the upper surface of the cap 250.

The push button switch 10 according to the present invention can exhibit its function by the elasticity of the elastic means 60 provided inside the contact point 50. However, The rod 500 may further include an elastic means 60 formed of a compression coil spring.

A method of assembling the switch 10 according to the present invention will be described with reference to Figs. 3 (A) and 3 (B).

3 (a)), the push rod 500 is screwed to the tab 430 at the center of the button 400, and the switch head 300 having the elastic means 60 on the outer periphery thereof, The stop ring 531 is engaged with the detent ring groove 530 protruding downward and the hexagonal nut 580 is inserted into the male threaded portion 330 on the outer periphery of the switch head 300, And the fixing nut 390 are combined, the coupling of the switch head 300 is completed.

Then, the guide 210 of the pusher 200 is passed through and fixed to the square hole 134 formed at the center of the edge 133 of the fixing device 100.

The flange 250a of the cap 250 is fixed to the second support portion 233 provided on the upper side of the pusher 200. The direction of the second coupling hole 251 formed on the upper side of the cap 250 is It is preferably formed in a direction parallel to the square hole 134 or the first coupling hole 550 of the push rod 500.

When the contact 50 is coupled to the lower side of the first end portion 110 of the assembled fixing device 100 and the switch head 300 is screwed to the upper side as described above, Likewise, the coupling of the switch 10 according to the present invention is completed.

This switch 10 releases the fixing nut 390 provided at one end and then passes the end of the switch head 300 through a through hole (not shown) formed in the panel 30, The installation is completed.

4, the button 400 is not projected to the outside, so that it is prevented from being arbitrarily operated even if the operator accidentally touches the pusher 200 And a second coupling hole 251 formed in the cap 250 opposite to the second coupling hole 251 and the first coupling hole 550 formed in the opposite side of the square hole 134 of the fixing device 100, Since the button 400 is coupled to the rod 500, any rotation of the button 400 is prevented.

Accordingly, since the pattern 410 provided on the button 400 is provided at the position, the operator can easily identify and operate arbitrarily, thereby eliminating the cause of malfunction that occurs, thereby improving productivity.

5 and 6 show another embodiment of the push button switch 10 according to the present invention. Instead of the second coupling hole 251 in the above-described embodiment, a square hole 252 is formed , It is needless to say that the end of the push rod 500 may be formed in a rectangular protrusion 560 so as to pass through the square hole 252 instead of the first coupling hole 550 to achieve the object of the present invention .

It is to be understood that the present invention is not limited to the specific preferred embodiments described above and that various modifications can be made by those skilled in the art without departing from the scope of the present invention And such modified embodiments are within the scope of the claims of the present invention.

10: Pushbutton switch 100: Fixing device
110, 130: first and second end portions 133:
134: square hole 200: pusher
210: Guide 230: Support
231, 233: first and second supporting portions 250: cap
251: second coupling member 300: switch head
310, 330: female, male thread portion 350: rod guide
370: tool support portion 400: button
500: push rod 510: screw
530: stop ring groove 550: first coupling hole

Claims (8)

delete delete A pusher which is provided in a longitudinal direction so as to be in contact with the contact and has a cap at the other end in the fixing device; And a push rod which is provided in the longitudinal direction of the switch head and connects or disconnects the contact by pressing the pusher in accordance with the depression of the push button,
The fixing device includes:
A first end portion which is symmetrical with respect to the longitudinal direction on both sides and has at least one engaging projection, and a second end portion which is opposed to the opened one side of the first end portion, A screw portion formed on the outer periphery of the structure, and a second end integrally formed with a square hole having a square hole formed inside the first end portion;
The pusher
A guide formed in a square shape so as to be easily slidable through a square hole formed in the edge of the fixing device and integrally formed at one end of the guide and having a first and a second support portion in a cylindrical upper end, And a cap provided with a flange on an end face of a disc-shaped section so as to be fitted to the outside of the second support portion of the support portion and having a second engagement portion in a direction perpendicular to the center of one side;
The push rod
A screw formed at one end of a circular rod shape to be engaged with a tab formed at the center of the button, a detent ring groove formed so as to be able to engage the detent ring in a longitudinally intermediate portion in the form of a circular rod, And a first coupling part formed on the second coupling part and coupled with the second coupling part;
Wherein the engaging projection of the fixing device
Wherein an inclined portion of an inverted triangular shape is formed so as to be widened toward the upper side so that the engaging hole of the engaging bracket provided at one side of the contact can be easily engaged with the engaging hole of the engaging bracket. delete The method of claim 3,
The switch head includes:
An arm and a male thread portion respectively formed on the inner and outer peripheries of a cylindrical structure;
A rod guide including a base integrally formed at the center of the switch head and a guide bush formed at the center of the base in a cylindrical shape in the longitudinal direction;
And a tool support portion formed of a polygonal shape having a square or more when viewed from a plane so as to be supported by a spanner at one end of the male screw portion. delete delete The method of claim 3,
The cap further comprises a square hole,
Wherein the end of the push rod further comprises a square protrusion formed to be able to pass through the square hole.

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