CN106067395B - Limit switch and breaker - Google Patents

Abstract

The invention discloses a kind of limit switch and breakers, the breaker includes: contact member driving portion, the contact member driving portion has rotation axle portion, which is connected on contact member, and linkedly rotates with contact member to switching on or off for electrode stem；Switch portion, switch portion fixed setting on the body and with the contact member driving portion arranged for interval, the switch portion includes multiple switch, the signal switched on or off in relation to described in when switching on or off described in the realization to external transmission；And switch motion unit, the switch motion unit are linkedly driven with the rotation axle portion, and in the contact member to the electrode stem when switching on or off, the switch motion unit can start or stop multiple switches simultaneously.

Description

Limit switches and circuit breakers

technical field

The invention relates to a limit switch and a circuit breaker provided with the limit switch.

Background technique

Generally, a circuit breaker is a power device used in industry, which can automatically cut off the line when an accident current such as an overload current or a short-circuit current occurs on a relatively low-voltage transmission and distribution line.

A circuit breaker generally performs a making action for closing an energized circuit and cut-off action for disconnecting energized lines. The closing and breaking actions of such a circuit breaker are generally performed automatically or by user's selection according to the state of the energized circuit.

In addition, a plurality of switches are provided on the circuit breaker, and the switches can transmit a signal about on or off to a display unit, a control unit, etc. when realizing the above-mentioned on operation or off operation. Furthermore, it is necessary to activate or deactivate such a plurality of switches simultaneously.

Therefore, it is actually necessary to develop a structure capable of simultaneously actuating or deactivating such a plurality of switches.

Furthermore, the conventional switch employs a rotary lever, but it has a problem that it is difficult to maintain the contact pressure stably.

Contents of the invention

The invention provides a circuit breaker with simple structure and capable of starting or stopping multiple switches at the same time.

The present invention provides a limit switch capable of maintaining stable contact pressure.

A circuit breaker according to an embodiment of the present invention may include: a contact member driving part having a rotating shaft part connected to the contact member and connected to or disconnected from the contact member to the electrode rod. Interlocking rotation; switch part, the switch part is fixedly arranged on the body and arranged at intervals with the contact member drive part, the switch part includes a plurality of switches, to transmit information to the outside when the connection or cut-off is realized the signal for turning on or off; and a switch operation unit that is driven in conjunction with the rotating shaft and that is activated when the contact member is turned on or off to the electrode rod. The switch action unit can activate or deactivate a plurality of switches at the same time.

The switch operation unit may include: a rotation member fixedly provided on the rotation shaft so as to rotate in conjunction with the rotation shaft; and a switch operation member that, when the rotation member rotates, the The switch actuation member is rotated by the rotating member so as to be able to activate or stop a plurality of the switches.

The switch actuating member may include: a pressing portion whose tip is rotatable by pressure applied by the rotating member; and a shaft portion that is bent from the pressing portion and is rotatable. The switch action part is arranged on the body; the switch action part is bent from the shaft part at least once, so as to start or stop the switch.

The pressing portion, the shaft portion, and the switch operation portion may be integrally formed as a rod having a circular cross section, and may be bent.

The amount of elastic deformation of the switch operating portion may be greater than the amount of elastic deformation of the shaft portion.

The switches may be provided on a switch mounting member of the body and arranged in a row.

A circuit breaker according to another embodiment of the present invention may include: a contact member driving part having a rotating shaft part connected to the contact member and connected to or from the contact member to the electrode rod. Cut off and rotate in conjunction; the main switch part, the main switch part is fixedly arranged on the body and arranged at intervals with the contact member driving part, the main switch part includes a plurality of switches; the main switch action unit, the main switch action unit Driven in conjunction with the rotating shaft part, and when the contact member is turned on or off, the main switch action unit can simultaneously start or stop a plurality of the switches of the main switch part; the additional switch, The additional switch is fixedly arranged on the body and spaced apart from the main switch part; the additional switch action member is driven in conjunction with the rotation shaft, so that the additional switch and the The above main switch parts start or stop at the same time.

The additional switch actuating member may have an arcuate surface so that the arcuate surface is brought into contact with or separated from the additional switch by the rotation of the rotation shaft portion.

The main switch operating unit may include: a rotating member fixedly arranged on the rotating shaft so as to rotate in conjunction with the rotating shaft; a main switch operating member configured to rotate when the rotating member rotates. The main switch operating member is rotated by the rotating member so as to be able to activate or stop a plurality of the switches.

The main switch actuating member may include: a pressing part whose tip can be rotated by the pressing force applied by the rotating member; and a shaft part which is bent from the pressing part and can be The main switch action part is rotatably arranged on the body; the main switch action part is bent from the shaft part at least once, so as to be able to start or stop the switch.

The pressing portion, the shaft portion, and the main switch operating portion may be integrally formed as a rod having a circular cross section, and may be bent.

The amount of elastic deformation of the main switch operating portion may be greater than the amount of elastic deformation of the shaft portion.

A limit switch according to an embodiment of the present invention may include: a base having a guide; a rod connected to the guide and capable of moving in an axial direction; a fixed electrode connected to On the base; a movable electrode, which is connected to the rod and can contact or separate from the fixed electrode as the rod moves; and a contact pressure providing part, which provides A portion is connected to the rod portion and provides pressure to bring the fixed electrode and the movable electrode into contact.

In addition, the fixed electrodes may include: a pair of first fixed electrodes connected to the base; and a pair of second fixed electrodes connected to the base. on the base, and the second fixed electrode is opposite to the first fixed electrode and arranged at intervals, the movable electrode is located between the first fixed electrode and the second fixed electrode, and can follow the The movement of the rod portion comes into contact with one of the first fixed electrode and the second fixed electrode.

In addition, the rod may include: a rod body; an elastic providing part that is in contact with the rod body and the base, and moves toward the base according to the position of the rod relative to the base. The rod body provides elastic force.

In addition, the contact pressure providing part may include: a first contact pressure providing member connecting the rod part and the base; a second contact pressure providing member connecting the second contact pressure providing member For the rod portion and the movable electrode, the direction of the pressure provided by the first contact pressure providing member is opposite to the direction of the pressure provided by the second contact pressure providing member.

In addition, the first contact pressure providing member and the second contact pressure providing member may be compression springs.

In addition, when the movable electrode is in contact with the first fixed electrode, the first contact pressure providing member may provide the movable electrode with a pressure toward the first fixed electrode, and the movable electrode is in contact with the first fixed electrode. When the two fixed electrodes are in contact, the second contact pressure providing member may provide the movable electrode with a pressure toward the second fixed electrode.

The present invention has the effects of being simple in structure and capable of simultaneously starting or stopping multiple switches.

The present invention has the effect of having a structure with a plurality of springs and being able to maintain a stable contact pressure.

Description of drawings

FIG. 1 is a perspective view showing the inside of a circuit breaker according to an embodiment of the present invention;

2 is a perspective view illustrating a rotating shaft portion, a switch portion, and a switch action unit of a circuit breaker according to an embodiment of the present invention;

3 is an enlarged view illustrating a rotating shaft portion, a switch portion, and a switch action unit of a circuit breaker according to an embodiment of the present invention;

FIG. 4 is an enlarged view showing a rotating shaft portion, a switch portion, and a switching action unit of a circuit breaker according to an embodiment of the present invention from a different angle from FIG. 3 ;

5 and 6 are explanatory diagrams for explaining the operation of a circuit breaker according to an embodiment of the present invention;

7 is a perspective view showing the inside of a circuit breaker according to another embodiment of the present invention;

8 is a perspective view showing a main switch part, a switch action unit, an additional switch, and an additional switch action member of a circuit breaker according to another embodiment of the present invention;

9 is an enlarged view showing a rotating shaft portion, a main switch portion, a switch action unit, an additional switch, and an additional switch action member of a circuit breaker according to another embodiment of the present invention;

Fig. 10 is an enlarged view showing the rotating shaft part, the main switch part, the switching action unit, the additional switch and the additional switching action member of the circuit breaker according to another embodiment of the present invention from a different angle from that of Fig. 9;

11 and 12 are explanatory diagrams for explaining the operation of a circuit breaker according to another embodiment of the present invention;

13 is a front sectional view showing a limit switch according to an embodiment of the present invention;

Figure 14 is an exploded view of a limit switch according to an embodiment of the present invention;

FIG. 15 is a diagram showing a state where no pressure from the outside is applied to the limit switch according to one embodiment of the present invention;

Fig. 16 is a diagram showing a state where external pressure is applied to a limit switch according to one embodiment of the present invention.

Explanation of reference signs

100 circuit breakers

120 Contact member driving part

140 switch part

160 switch action unit

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the embodiment of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiment described below. In addition, the embodiments of the present invention are provided in order to more completely explain the present invention to those having ordinary knowledge in the technical field. In the drawings, the shapes, sizes, etc. of elements may be exaggerated for clarity.

1 is a perspective view showing the inside of a circuit breaker according to one embodiment of the present invention, and FIG. 2 is a perspective view showing a rotating shaft portion, a switch portion, and a switching operation unit of the circuit breaker according to one embodiment of the present invention. 3 is an enlarged view showing the rotating shaft part, the switch part and the switching action unit of the circuit breaker according to one embodiment of the present invention, and Fig. 4 shows the circuit breaker according to one embodiment of the present invention from a different angle from Fig. 3 An enlarged view of the rotating shaft part, switch part, and switch action unit of the device.

Referring to FIGS. 1 to 4 , as an example of a circuit breaker 100 according to an embodiment of the present invention, the circuit breaker 100 may include a contact member driving part 120 , a switching part 140 and a switching action unit 160 .

In addition, the contact member driving part 120 , the switch part 140 and the switch action unit 160 are provided on the main body 110 and arranged in an inner space of a case (not shown) of the circuit breaker 100 .

The contact member driving part 120 is connected to a contact member (not shown), and the contact member driving part 120 has a rotation shaft part 122 which is linked to the connection and disconnection of the contact member to the electrode rod (not shown). rotate.

That is, the contact member driving part 120 includes a member having a transmission structure so as to perform a function of transmitting a driving force capable of connecting the contact member to the electrode rod or disconnecting the contact member from the electrode rod when an accident current occurs.

The switch part 140 is fixedly arranged on the body 110 and arranged at a distance from the contact member driving part 120 , and the switch part 140 may include a plurality of switches 142 .

That is, the switch part 140 is disposed on the switch mounting member 112 of the body 110, and a plurality of switches 142 may be disposed to be arranged in a row. In addition, a button ( 142 a , refer to FIG. 4 ) of the switch 142 is arranged toward the inner side of the body 110 .

Additionally, switch 142 is commonly referred to as a battery transfer switch ( Cell switch). Additionally, the switch 142 performs the function of transmitting a signal regarding the state of the position of the contact member. That is, a signal indicating whether the contact member is in the on state or in the off state is transmitted to the display unit, the control unit, and the like.

The switch operation unit 160 is driven in conjunction with the rotating shaft portion 122 so that the plurality of switches 142 can be activated or stopped simultaneously when the contact member is turned on or off to the electrode rod.

For this, the switch action unit 160 may include a rotation member 162 and a switch action member 164 .

The rotating member 162 is fixed to the rotating shaft portion 122 and rotates in conjunction with the rotating shaft portion 122 . In addition, the rotating member 162 may include a pair of rotating parts 162 a fixedly provided on the rotating shaft part 122 and an extension rod 162 b having both ends provided on the rotating parts 162 a and arranged parallel to the rotating shaft part 122 .

That is, as the rotation shaft portion 122 rotates, the extension rod 162 b rotates in the circumferential direction of the rotation shaft portion 122 in conjunction with the rotation shaft portion 122 , thereby rotating the switch operation member 164 .

The switch operation member 164 activates or stops the plurality of switches 142 simultaneously by the rotation of the rotation member 162 when the rotation member 162 rotates.

In addition, the switch operation member 164 may include: a pressing part 164a whose tip is rotated by the pressure applied by the rotating member 162; and a shaft part 164b which is bent from the pressing part 164a and can The switch action part 164c is rotatably arranged on the body 110, and the switch action part 164c is bent at least once from the shaft part 164b, so as to be able to start or stop a plurality of switches 142 at the same time.

The pressing portion 164 a is arranged on the rotation path of the extension rod 162 b of the rotation member 162 so as to be located on the front side of the extension rod 162 b. Thus, when the extension rod 162b rotates in the circumferential direction of the rotation shaft portion 122, the pressing portion 164a is rotated by the extension rod 162b.

In addition, the shaft portion 164b is provided on the mount 114 on the body 110 . That is, the shaft portion 164b is inserted into the installation groove 114b of the installation table 114, and is rotatably provided in the installation groove 114b.

In addition, when the pressing part 164a is rotated by the rotating member 162, the shaft part 164b is rotated in the attachment groove 114b.

In addition, when the shaft portion 164b rotates, the switch operation portion 164c formed to be bent at least twice from the shaft portion 164b also rotates in the same direction as the rotation direction of the pressing portion 164a. In addition, the length of the switch operation part 164c may be the length which can press all the buttons 142a provided in the some switch 142. As shown in FIG.

In addition, the switch operation member 164 may be formed as a rod with a circular cross section, and may be formed by bending. In addition, the amount of elastic deformation of the switch operation part 164c It may be larger than the amount of elastic deformation of the shaft portion 164b.

That is, the switch operation part 164c is formed to have a larger elastic force than other parts so that the button 142a can be simultaneously pressed by the rotation of the switch operation part 164c.

In addition, when the rotating shaft portion 122 is rotated to move the contact member from the on state to the off state, the switch operation portion 144c can be separated from the button 132a by a restoring force exerted on the button 132a from the inside of the switch 132 toward the outside.

As described above, the switch operation member 164 can activate or stop the plurality of switches 142 of the switch unit 140 at the same time as the rotation shaft portion 122 that is rotatable in conjunction with the contact member rotates.

In other words, the switch operation member 164 rotating in conjunction with the contact member can simultaneously press the buttons 142a of the plurality of switches 142, or the switch operation member 164 can be separated from the button 142a to activate or stop the plurality of switches 142 at the same time.

Hereinafter, the operation of the circuit breaker according to the first embodiment of the present invention will be described with reference to the drawings.

5 and 6 are explanatory views for explaining the operation of the circuit breaker according to one embodiment of the present invention.

Referring to FIGS. 5 and 6 , first, as shown in FIG. 5 , when the rotating shaft portion 122 is located at a position where the contact member is in the cut-off state, the switch action member 164 is arranged separately from the switch 142 of the switch portion 140 .

Thereafter, as shown in FIG. 6 , when the rotating shaft portion 122 rotates to realize the connection of the contact member, the rotating member 162 rotates in conjunction with the rotating shaft portion 122 . Then, when the rotating member 162 rotates, the extension rod 162 b of the rotating member 162 rotates the switch operation member 164 .

That is, the extension rod 162b applies pressure to the pressing portion 164a of the switch operation member 164 to rotate the rotation operation member 164 .

At this time, the shaft portion 164b rotates within the mounting groove 114b.

In addition, when the shaft portion 164b rotates, the switch operation portion 164c formed to be bent at least twice from the shaft portion 164b also rotates in the same direction as the rotation direction of the pressing portion 164a. In addition, since the length of the switch operation part 164c is such that all the buttons 142a provided on the plurality of switches 142 can be pressed, the buttons 142a provided on the plurality of switches 142 can be pressed by the switch operation part 164c.

In addition, when the rotating shaft portion 122 is rotated to move the contact member from the on state to the off state, the switch operation portion 144c can be separated from the button 132a by a restoring force exerted on the button 132a from the inside of the switch 132 toward the outside.

As described above, the switch operation member 164 can activate or stop the plurality of switches 142 of the switch unit 140 at the same time as the rotation shaft portion 122 that is rotatable in conjunction with the contact member rotates.

In other words, the switch operation member 164 rotating in conjunction with the contact member can simultaneously press the buttons 142a of the plurality of switches 142, or the switch operation member 164 can be separated from the button 142a to activate or stop the plurality of switches 142 at the same time.

7 is a perspective view showing the inside of a circuit breaker according to another embodiment of the present invention, and FIG. 8 is a perspective view showing a main switch unit, a switching unit, an additional switch, and an additional switch of a circuit breaker according to another embodiment of the present invention. 9 is a perspective view of a switch action member. FIG. 9 is an enlarged view showing a rotating shaft portion, a main switch portion, a switch action unit, an additional switch, and an additional switch action member of a circuit breaker according to another embodiment of the present invention. FIG. 10 is an enlarged view from 9 shows an enlarged view of a rotating shaft portion, a main switch portion, a switching unit, an additional switch, and an additional switching member of a circuit breaker according to another embodiment of the present invention from an angle different from FIG. 9 .

7 to 10, as an example of a circuit breaker 200 according to another embodiment of the present invention, the circuit breaker 200 may include a contact member driving part 220, a main switch part 230, a main switch action unit 240, an additional switch 250 and A switch action member 260 is added.

In addition, the contact member driving part 220, the main switch part 230, the main switch operating unit 240, the additional switch 250, and the additional switch operating member 260 are provided on the body 210 and arranged in the inner space of the housing (not shown) of the circuit breaker 200. .

The contact member driving unit 220 is connected to a contact member (not shown), and has a rotation shaft portion 222 that rotates in conjunction with turning on or off of the contact member to the electrode rod (not shown).

That is, the contact member driving part 220 includes a member having a transmission structure so as to perform a function of transmitting a driving force capable of connecting the contact member to the electrode rod or disconnecting the contact member from the electrode rod when an accident current occurs.

The main switch part 230 is fixedly arranged on the body 210 and arranged at a distance from the contact member driving part 220 , and the main switch part 230 may include a plurality of switches 232 .

That is, the main switch part 230 is disposed on the switch mounting member 222 of the body 210, and a plurality of switches 232 may be disposed to be arranged in a row. In addition, the button 232 a of the switch 232 is disposed toward the inner side of the body 210 .

Additionally, switch 232 is commonly referred to as a battery transfer switch. Additionally, the switch 232 performs the function of transmitting a signal regarding the position status of the contact member. That is, a signal indicating whether the contact member is in the on state or in the off state is transmitted to the display unit, the control unit, and the like.

The main switch operating unit 240 is driven in conjunction with the rotating shaft portion 222, and can simultaneously activate or deactivate the plurality of switches 232 when the contact member is connected to or disconnected from the electrode rod.

For this, the main switch action unit 240 may include a rotation member 242 and a main switch action member 244 .

The rotating member 242 is fixed to the rotating shaft portion 222 and rotates in conjunction with the rotating shaft portion 222 . In addition, the rotation member 242 may include a pair of rotation parts 242 a fixedly provided on the rotation shaft part 222 and an extension rod 242 b having both ends provided on the rotation parts 242 a and arranged parallel to the rotation shaft part 222 .

That is, as the rotation shaft portion 222 rotates, the extension rod 242 b rotates in the circumferential direction of the rotation shaft portion 222 in conjunction with the rotation shaft portion 222 to rotate the main switch operating member 244 .

The main switch operating member 244 activates or stops the plurality of switches 232 simultaneously when the rotating member 242 rotates when the rotating member 242 rotates.

In addition, the main switch operation member 244 may include: a pressing part 244a whose tip is rotated by the pressing force applied by the rotating member 242; a shaft part 244b which is bent from the pressing part 244a and Rotatably disposed on the body 210; the main switch action part 244c, the main switch action part 244c is bent at least once from the shaft part 244b, so as to start or stop multiple switches 232 at the same time.

The pressing portion 244a is arranged on the rotation path of the extension rod 242b of the rotation member 242 so as to be located on the front side of the extension rod 242b. Thus, when the extension rod 242b rotates in the circumferential direction of the rotation shaft portion 222, the pressing portion 244a is rotated by the extension rod 244b.

In addition, the shaft portion 244b is provided on the mount 214 on the body 210 . That is, the shaft portion 244b is inserted into the installation groove 214b of the installation table 214, and is rotatably provided in the installation groove 214b.

In addition, when the pressing part 244a is rotated by the rotating member 242, the shaft part 244b is rotated in the attachment groove 214b.

In addition, when the shaft portion 244b rotates, the main switch operation portion 244c formed to be bent at least twice from the shaft portion 244b also rotates in the same direction as the rotation direction of the pressing portion 244a. In addition, the length of the main switch operation part 244c may be such that all the buttons 232a provided on the plurality of switches 232 can be pressed.

In addition, the main switch operating member 244 may be formed as a rod with a circular cross section, and may be formed by bending. In addition, the amount of elastic deformation of the main switch operating portion 244c may be greater than the amount of elastic deformation of the shaft portion 244b.

That is, the main switch operating part 244c is formed to have a larger elastic force than other parts so that the button 232a can be simultaneously pressed by the rotation of the main switch operating part 244c.

In addition, when the rotating shaft portion 222 is rotated to move the contact member from the on state to the off state, the switch operation portion 244c can be separated from the button 232a by a restoring force exerted on the button 232a from the inside of the switch 232 toward the outside.

The additional switch 250 is fixedly disposed on the body 210 and spaced apart from the main switch part 240 . That is, the additional switch 250 is fixedly disposed on the additional switch installation platform 216 of the main body 210 .

Furthermore, the additional switch 250 may also be a switch called a battery changeover switch, which performs the function of transmitting a signal regarding the position status of the contact member. That is, a signal indicating whether the contact member is in the ON state or in the OFF state is transmitted to the display unit, the control unit, and the like.

The display unit and the control unit are structures capable of receiving signals from the main switch unit 230 , and an additional switch 250 can be provided on the main body 210 when it is necessary to additionally transmit signals to structures other than the above-mentioned structures. As an example, the additional switch 250 may be provided on the main body 210 and driven in conjunction with the main switch unit 230 so as to be able to transmit a signal to a remote controller, an operation panel, and the like.

The additional switch operation member 260 is driven in conjunction with the rotation shaft portion 222 to perform a function of simultaneously starting or stopping the additional switch 250 and the plurality of switches 232 of the main switch portion 230 .

In addition, the additional switch operation member 260 has an arcuate surface 262 so that the arcuate surface 262 can be brought into contact with or separated from the button 252 provided on the additional switch 250 by the rotation of the rotation shaft portion 222 .

As described above, the main switch operating member 244 and the additional switch operating member 260 can simultaneously activate or stop the plurality of switches 232 and the additional switch 250 of the main switch unit 230 as the rotating shaft portion 222 rotates in conjunction with the contact member.

In other words, the main switch actuation member 244 and the additional switch actuation member 260, which rotate in conjunction with the contact members, simultaneously press the buttons 232a, 252 respectively provided on the plurality of switches 232 and the additional switch 250 or simultaneously separate from the buttons 232a, 252, thereby Multiple switches 232 and additional switches 250 are activated or deactivated simultaneously.

Hereinafter, operation of a circuit breaker according to another embodiment of the present invention will be described with reference to the drawings.

11 and 12 are explanatory views for explaining the operation of a circuit breaker according to another embodiment of the present invention.

Referring to FIG. 11 and FIG. 12 , when the rotating shaft portion 222 is rotated to realize the connection of the contact member, the rotating member 242 and the additional switch operation member 260 are rotated in conjunction with the rotating shaft portion 222 . Then, when the rotating member 242 rotates, the extension rod 242b of the rotating member 242 drives the main switch operation member 244 to rotate.

That is, the extension rod 242b applies pressure to the pressing portion 244a of the main switch operating member 244 to rotate the main switch operating member 244 .

At this time, the shaft portion 244b rotates within the mounting groove 214b.

In addition, when the shaft portion 244b rotates, the main switch operation portion 244c formed to be bent at least twice from the shaft portion 244b also rotates in the same direction as the rotation direction of the pressing portion 244a. In addition, the length of the main switch operation part 244c is such that all the buttons 232a provided on the plurality of switches 232 can be pressed, so the buttons 232a provided on the plurality of switches 232 can be pressed by the main switch operation part 244c.

In addition, when the rotating member 242 rotates, the additional switch operating member 260 also rotates in conjunction with the rotating shaft portion 222 .

The additional switch operation member 260 rotated as described above is rotated in conjunction with the rotation shaft portion 222 , so that the button 252 of the additional switch 250 can be pressed.

In addition, when the rotating shaft portion 222 is rotated to move the contact member from the on state to the off state, the main switch operating portion 244c can be separated from the button 232a by a restoring force applied to the button 232a from the inside of the switch 232 toward the outside.

Furthermore, the additional switch operation member 260 can be separated from the button 252 of the additional switch 250 by being rotated in conjunction with the rotation shaft portion 222 .

As described above, the main switch operating member 244 and the additional switch operating member 260 can simultaneously activate or stop the plurality of switches 232 and the additional switch 250 of the main switch unit 230 as the rotating shaft portion 222 rotates in conjunction with the contact member.

In other words, the main switch actuation member 244 and the additional switch actuation member 260, which rotate in conjunction with the contact members, simultaneously press the buttons 232a, 252 respectively provided on the plurality of switches 232 and the additional switch 250 or simultaneously separate from the buttons 232a, 252, thereby Multiple switches 232 and additional switches 250 can be activated or deactivated simultaneously.

13 is a front sectional view showing a limit switch according to one embodiment of the present invention, FIG. 14 is an exploded view of a limit switch according to one embodiment of the present invention, and FIG. 15 is an exploded view showing a limit switch according to one embodiment of the present invention. , is a diagram showing a state where no external pressure is applied to the limit switch, and FIG. 16 is a diagram showing a state where external pressure is applied to the limit switch according to one embodiment of the present invention.

Referring to FIGS. 13 to 16 , a limit switch 300 according to an embodiment of the present invention may include a base 310 , a rod portion 320 , a fixed electrode 330 , a movable electrode 340 and a contact pressure providing portion 350 . A guiding portion 112 is formed on the base 310 , and the rod portion 320 is connected to the guiding portion 112 to be movable. The movable electrode 340 may be connected to the rod part 320 , and the movable electrode 340 may contact or separate from the fixed electrode 330 as the rod part 320 moves.

The rod part 320 may include a rod part body 322 and an elastic providing part 324 , and the elasticity providing rod part 324 connects the rod part body 322 and the base 310 to provide elastic force to the rod part body 322 . By providing elastic force to the rod body 322 , when no pressure is applied on the rod 320 from the outside, as shown in FIG. 1 , the movable electrode 340 can be in contact with the fixed electrode 330 .

The fixed electrodes 330 may include: a pair of first fixed electrodes 332, a pair of the first fixed electrodes 332 connected to the base 310; a pair of second fixed electrodes 334, a pair of the second fixed electrodes 334 It is connected to the base 310 and is arranged at intervals opposite to the first fixed electrode 332 . The movable electrode 340 can be located between the first fixed electrode 332 and the second fixed electrode 334, and as the rod part 320 moves, the movable electrode 340 can be connected to the first fixed electrode 332. Contact or contact with the second fixed electrode 334 .

The movable electrode 340 can form a closed electric circuit by being in contact with the fixed electrode 330 . The movable electrode 340 is not fixed on the first fixed electrode 332, nor is it fixed on the second fixed electrode 334, therefore, if the contact between the movable electrode 340 and the fixed electrode 330 is unstable, it may The closed circuit formed by the contact between the movable electrode 340 and the fixed electrode 330 will be unstable.

Since the fixed electrode 330 may include the first fixed electrode 332 and the second fixed electrode 334 , two electric circuits may be generated by the movement of the movable electrode 340 . However, the movable electrode 340 cannot be in contact with the first fixed electrode 332 and the second fixed electrode 334 at the same time, so the two circuits cannot all become closed circuits.

In order to stably maintain the closed circuit formed by the movement of the movable electrode 340 , it is necessary to stably maintain the pressure of close contact between the movable electrode 340 and the fixed electrode 330 . The contact pressure providing part 350 provides pressure to the movable electrode 340 so that the pressure of close contact between the movable electrode 340 and the fixed electrode 330 is stably maintained.

Since the fixed electrode 330 may include the first fixed electrode 332 and the second fixed electrode 334 , the contact pressure providing part 350 may include a first contact pressure providing member 352 and a second contact pressure providing member 354 . Here, the first contact pressure providing member 352 connects the rod portion 320 and the base 310 , and can provide the movable electrode 340 with a pressure toward the first fixed electrode 332 . In addition, the second contact pressure providing member 354 connects the rod portion 320 and the movable electrode 340 and can provide the movable electrode 340 with a pressure toward the second fixed electrode 334 . An electrode guide 336 can be provided between the first fixed electrode 332 and the second fixed electrode 334, and the electrode guide 336 can make the movable electrode 340 move between the first fixed electrode 332 and the second fixed electrode 334. The two fixed electrodes 334 move stably between each other.

As shown in FIG. 13 , the first contact pressure providing member 352 can provide pressure to the rod portion 320 in the direction of pushing the rod portion 320 outward, and the movable electrode 340 can pass the second contact pressure. The providing member 354 is connected to the rod portion 320 . Thus, the first contact pressure providing member 352 can provide pressure to the movable electrode 340 through the rod portion 320 and the second contact pressure providing member 354 .

An embodiment of the present invention will be described with reference to FIGS. 14 and 15 . When sufficient pressure is not exerted on the rod portion 320 from the outside, as shown in FIG. 14 , the movable electrode 340 can be in contact with the first fixed electrode 332 . At this time, the first contact pressure providing member 352 provides pressure in the direction of pushing the rod portion 320 toward the outside of the base 310 , and can be connected to the rod portion 320 through the second contact pressure providing member 354 . The movable electrode 340 provides pressure.

The first contact pressure providing member 352 is formed as a spring having an elastic force to be able to provide pressure to the movable electrode 340 . When the movable electrode 340 is in contact with the first fixed electrode 332 , a closed circuit can be formed, and the closed circuit can be called a first circuit 370 . That is, when no pressure is applied to the rod portion 320 from the outside, as shown in FIG. 14 , the first circuit 370 is formed as a closed circuit to determine whether the user applies pressure to the rod portion 320 .

The second contact pressure providing member 354 may be a spring with elastic force to provide pressure to the movable electrode 340 . When the movable electrode 340 is in contact with the second fixed electrode 334 , a closed circuit can be formed, and the closed circuit can be called a second circuit 380 . That is, when pressure is exerted on the rod portion 320 from the outside, as shown in FIG. When 340 is separated from the first fixed electrode 332 and comes into contact with the second fixed electrode 334 , the second circuit 380 forms a closed circuit and it can be determined whether the user applies pressure to the rod 320 .

According to the position of the movable electrode 340, the first circuit 370 forms a closed circuit or the second circuit 380 forms a closed circuit, but the movable electrode 340 cannot be connected with the first fixed electrode 332 and the The second fixed electrodes 334 are in contact, thus preventing the first circuit 370 and the second circuit 380 from forming a closed circuit at the same time. This is because if the first circuit 370 and the second circuit 380 form a closed circuit at the same time, it is difficult for the user to judge whether there is external pressure on the rod 320 .

In addition, the limit switch 300 according to the first embodiment of the present invention as described above may be the switch 142 provided on the switch part 140 of the circuit breaker according to one embodiment of the present invention as described above, or the switch 142 provided on the switch part 140 according to the present invention. The switch 232 and the additional switch 250 of the main switch unit 230 on the circuit breaker of another embodiment of the invention.

The embodiments of the present invention have been described in detail above, but the scope of rights of the present invention is not limited thereto. Those with common knowledge in the technical field can understand that without departing from the technical idea of the present invention described in the claims Various modifications and variations are possible within this range.

Claims (8)

1. A circuit breaker, wherein the circuit breaker comprises: a contact member driving part, the contact member driving part has a rotation shaft part connected to the contact member, and rotates in conjunction with the connection or disconnection of the contact member to the electrode rod; A switch part, which is fixedly arranged on the body and arranged at a distance from the driving part of the contact member, the switch part includes a plurality of switches to transmit information about the on or off to the outside when the on or off is realized. cut off signal; and a switch operation unit that is driven in conjunction with the rotation shaft, and can simultaneously activate or stop a plurality of switches when the contact member is turned on or off from the electrode rod. said switch; The switch action unit includes: a rotating member fixedly provided on the rotating shaft portion so as to rotate in conjunction with the rotating shaft portion; and A switch operation member, when the rotation member rotates, the switch operation member is rotated by the rotation member so as to be able to start or stop a plurality of the switches, characterized in that, The switch action member includes: a pressure applying part, the tip of which can be rotated by the pressure applied by the rotating member; a shaft portion bent from the pressing portion and rotatably provided on the body; A switch operation part is bent at least once from the shaft part so as to be able to activate or stop the switch. 2 . The circuit breaker according to claim 1 , wherein the pressing portion, the shaft portion, and the switching operation portion are integrally formed as a rod having a circular cross section, and are bent. 3 . 3. The circuit breaker according to claim 1, wherein the amount of elastic deformation of the switching operation portion is larger than the amount of elastic deformation of the shaft portion. 4. The circuit breaker according to claim 1, wherein the switches are provided on a switch mounting member of the body and arranged in a row. 5. A circuit breaker, wherein the circuit breaker comprises: a contact member driving part, the contact member driving part has a rotation shaft part connected to the contact member, and rotates in conjunction with the connection or disconnection of the contact member to the electrode rod; a main switch part, the main switch part is fixedly arranged on the body and arranged at intervals from the contact member driving part, and the main switch part includes a plurality of switches; a main switch operating unit which is driven in conjunction with the rotating shaft and which can activate or stop the main switch at the same time when the contact member is turned on or off a plurality of said switches; an additional switch, the additional switch is fixedly arranged on the body and spaced apart from the main switch part; an additional switch actuating member driven in conjunction with the rotary shaft portion so that the additional switch is activated or stopped simultaneously with the main switch portion; The main switch action unit includes: a rotating member fixedly disposed on the rotating shaft portion to rotate in conjunction with the rotating shaft portion; The main switch actuating member, when the rotating member rotates, the main switch actuating member is rotated by the rotating member so as to be able to start or stop a plurality of the switches, characterized in that, The main switch action member includes: a pressure applying part, the tip of which can be rotated by the pressure applied by the rotating member; a shaft portion bent from the pressing portion and rotatably provided on the body; A main switch operating portion bent at least once from the shaft portion to be able to activate or deactivate the switch. 6. The circuit breaker according to claim 5, wherein the additional switch actuating member has an arcuate surface to be brought into contact with or separated from the additional switch by the rotation of the rotation shaft portion. 7. The circuit breaker according to claim 5, wherein the pressing portion, the shaft portion, and the main switch operating portion are integrally formed as a rod having a circular cross-section, and are formed in a bent manner. 8. The circuit breaker according to claim 5, wherein an elastic deformation amount of the main switch operating portion is larger than an elastic deformation amount of the shaft portion.