The emergency stop switch 2 performs an operation support of an operation switch, and not only improves operability and safety but also simplifies the structure to enhance reliability. The emergency stop switch (or operation switch unit) 2 with an operation support function includes an emergency stop button (or operation switch) 21 for switching the state of the contact, a reception part (or detection part) 32 for detecting a remote operation of the emergency stop button 21 and an electromagnetic solenoid (or actuating part) 3 that is disposed between the contact and the emergency stop button 21 and that actuates the emergency stop button 21 on the basis of the remote operation received (or detected) by the reception part 32. The emergency stop button 21 is located on one end side of the emergency stop switch 2 and the contact is located on the other end side of the emergency stop switch 2.

A push-button switch assembly with identification of switching states includes: a push-button switch having an actuating head for actuating the push-button switch and having a push-button guide; and an adapter device for attaching the push-button switch to a housing body. The adapter device fastens the push-button switch in a bore of the housing body. The adapter device compensates for a different diameter of the bore of the housing body and the push-button guide. The push-button guide has a plunger which is arranged in a hollow body of the push-button guide and movable in the hollow body of the push-button guide when the actuating head is actuated. By actuating the actuating head, the push-button switch is switchable from a non-released state to a released state. The push-button switch is arranged such that a region thereof visibly protrudes from under the actuating head when the push-button switch is in the non-released state.

The emergency stop switch unit 2 as an operation switch unit includes a direct operation part 20A and an alternative operation part 20B. The direct operation part 20A has an emergency stop button 21 adapted to be directly operated. The alternative operation part 20B is adapted to be linked with the direct operation part 20A and alternatively operates the emergency stop button 21 in place of the direct operation part 20A. The alternative operation part 20B has a reception part 32 that detects a remote operation of the emergency stop button 21 and an electromagnetic solenoid 3 that actuates the emergency stop button 21 on the basis of the remote operation detected by the reception part 32.

A push-button switch assembly with identification of switching states includes: a push-button switch having an actuating head for actuating the push-button switch and having a push-button guide; and an adapter device for attaching the push-button switch to a housing body. The adapter device fastens the push-button switch in a bore of the housing body. The adapter device compensates for a different diameter of the bore of the housing body and the push-button guide. The push-button guide has a plunger which is arranged in a hollow body of the push-button guide and movable in the hollow body of the push-button guide when the actuating head is actuated. By actuating the actuating head, the push-button switch is switchable from a non-released state to a released state. The push-button switch is arranged such that a region thereof visibly protrudes from under the actuating head when the push-button switch is in the non-released state.

A push-button switch may include a housing, an operation unit, a lock lever unit, and a biasing portion. A lever support portion may be connected to the operation unit so as to be movable together with the operation unit when a lever body is positioned at a second position. The housing may have a deformation portion that, when the operation unit is pulled in an opening direction when the lever body is positioned at the second position, deforms the lever body so as to be capable of releasing the pressing to the lever body by a holding unit.

The emergency stop switch unit 2 as an operation switch unit includes a direct operation part 20A and an alternative operation part 20B. The direct operation part 20A has an emergency stop button 21 adapted to be directly operated. The alternative operation part 20B is adapted to be linked with the direct operation part 20A and alternatively operates the emergency stop button 21 in place of the direct operation part 20A. The alternative operation part 20B has a reception part 32 that detects a remote operation of the emergency stop button 21 and an electromagnetic solenoid 3 that actuates the emergency stop button 21 on the basis of the remote operation detected by the reception part 32.

A push-button switch may include a housing, an operation unit, a lock lever unit, and a biasing portion. A lever support portion may be connected to the operation unit so as to be movable together with the operation unit when a lever body is positioned at a second position. The housing may have a deformation portion that, when the operation unit is pulled in an opening direction when the lever body is positioned at the second position, deforms the lever body so as to be capable of releasing the pressing to the lever body by a holding unit.

The emergency stop switch 2 performs an operation support of an operation switch, and not only improves operability and safety but also simplifies the structure to enhance reliability. The emergency stop switch (or operation switch unit) 2 with an operation support function includes an emergency stop button (or operation switch) 21 for switching the state of the contact, a reception part (or detection part) 32 for detecting a remote operation of the emergency stop button 21 and an electromagnetic solenoid (or actuating part) 3 that is disposed between the contact and the emergency stop button 21 and that actuates the emergency stop button 21 on the basis of the remote operation received (or detected) by the reception part 32. The emergency stop button 21 is located on one end side of the emergency stop switch 2 and the contact is located on the other end side of the emergency stop switch 2.

A manual alarm device including a housing and a displacement element mounted in the housing is provided. The displacement element is moveable between a first position and a second position. Only application of a stable force to the displacement element is configured to move the displaceable element between the first position and the second position.

Safety apparatus comprising a safety switch and an actuator designed to be associated with a movable guard and to interact with each other upon the opening and closing of said movable guard. The safety switch comprises switching means designed to turn between an active state and an inactive state, a locking mechanism for locking the actuator in contact with the safety switch, a control unit connected to the locking mechanism and to the switching means for controlling the same. The safety switch also comprises a main reset member for transmitting a main reset signal to the control unit.