Patent Publication Number: US-2023154702-A1

Title: Rotary switch

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/CN2021/100161, filed on Jun. 15, 2021, which claims priority to Chinese Patent Application No. 202010703233.3, filed on Jul. 20, 2020. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. 
    
    
     TECHNICAL FIELD 
     The present application relates to the field of electrical technologies, and in particular, to a rotary switch. 
     BACKGROUND 
     A switch is an element that can open a circuit, interrupt current, or cause the current to flow to another circuit. In terms of history of development, the switch has evolved, from an original knife switch that needs to be manually operated, to a current intelligent switch applied in various large electrical control devices. Functions of the switch are increasing, and safety of the switch is increasingly high. 
     With development of technologies, the switch has been widely applied in an increasing quantity of control fields or automation fields, such as electric power, machinery, mining, metallurgy, petrochemical, construction, shipbuilding, nuclear power generation, and new energy power generation. In a use process, there are often emergencies that need to cut off a power supply, but there is no professional technician on site. Other people cannot accurately find a location and cut off the power supply, and cannot eliminate a potential safety risk in time. 
     Currently, to cut off the power supply in time, an electric motor is usually added in a position of an operating handle of the switch to implement a remote switching function, and the rotary switch is driven by the electric motor to cut off the circuit. However, usually, when an emergency occurs, the power supply cannot continuously supply power to the electric motor, which affects normal turn-off of the switch. 
     SUMMARY 
     The present application aims to provide a rotary switch, which can improve reliability of a remote switch-off action of the rotary switch. 
     Embodiments of the present application are implemented as follows. 
     A rotary switch includes an operating mechanism, an on-off apparatus, and a tripping component, and the operating mechanism includes an energy storage component and a drive component. The drive component is separately in driving connection with the energy storage component and the on-off apparatus. The energy storage component includes a latch and an energy storage spring that cooperates with the latch. The energy storage spring can be separately connected to the latch and the drive component in a snap-fit manner, the drive component is rotated, so that the energy storage component can store energy, and the drive component is used to drive the on-off apparatus to be switched on. The latch cooperates with the tripping component, so that the latch locks or unlocks the energy storage spring. When unlocked, the energy storage spring drives the drive component to rotate to a switch-off position of the on-off apparatus. 
     Optionally, the operating mechanism further includes an upper cover and a mounting base connected to the upper cover. The drive component includes a rotating shaft and a drive part connected to the rotating shaft. A mounting slot is disposed in the mounting base. A rotating base is disposed in the mounting slot, the rotating base is connected to the on-off apparatus, and a first elastic part is disposed in the rotating base. When the rotating shaft is rotated, the rotating base can be driven to rotate by using the first elastic part, to switch off or switch on the on-off apparatus. 
     Optionally, a first push part and a second push part are disposed on the drive part. The rotating base includes a rotating base body, and a first pawl and a second pawl disposed on the rotating base body. The first pawl and the second pawl are disposed opposite to each other, and there is a preset space between an end face of the first pawl and an end face of the second pawl. A first locking protrusion and a second locking protrusion are disposed on the upper cover at a corresponding interval, and both the first locking protrusion and the second locking protrusion can be clamped in the preset space. There is a first gap between the first pawl and the rotating base body, and there is a second gap between the second pawl and the rotating base body. The first push part is capable of abutting against the first pawl, so that the first pawl retracts towards the first gap, to be released from locking of the first locking protrusion. The second push part is capable of abutting against the second pawl, so that the second pawl retracts towards the second gap, to be released from locking of the second locking protrusion. 
     Optionally, a first protrusion is further disposed on the drive part, a stopper is further disposed in the rotating base, and the first elastic part includes an elastic body, and a first end part and a second end part separately connected to the elastic body. The first end part abuts against the first protrusion, and the second end part abuts against the stopper. 
     Optionally, the energy storage spring includes an energy storage spring body, and a first torsion arm and a second torsion arm separately connected to the energy storage spring body, and a second protrusion is further disposed on the drive part. The first torsion arm is connected to the upper cover in a snap-fit manner, and the second torsion arm abuts against the second protrusion. The latch includes a hinged part hinged with the upper cover, a locking part for locking the second torsion arm, and a tripping part that cooperates with the tripping component. The latch cooperates with the tripping component by using the tripping part. 
     Optionally, a guide face is disposed between the hinged part and the locking part, and a locking face is disposed on a side, of the locking part, away from the guide face. 
     Optionally, the energy storage component further includes a second elastic part, and the second elastic part is connected to the latch, so that the latch locks the energy storage spring. 
     Optionally, the tripping component includes a housing and a trip unit disposed in the housing, the housing is connected to the operating mechanism, and a reset button is further disposed on the housing, to reset the trip unit after the latch unlocks the energy storage spring. 
     Optionally, the on-off apparatus includes a mounting housing, and a moving contact component, a fixed contact component, and a shaft coupler disposed in the mounting housing. The moving contact component is connected to the rotating base through the shaft coupler, so that the rotating base drives the moving contact component to be in contact with or separate from the fixed contact component. 
     Optionally, a sealing ring is disposed on the rotating shaft, and the sealing ring is located between the rotating shaft and the upper cover. A knob is further disposed on the rotating shaft, and the knob is located on an end, of the rotating shaft, away from the drive part. 
     Beneficial effects of the embodiments of the present application are as follows. 
     In the rotary switch according to the embodiments of the present application, the energy storage component and the on-off apparatus are separately connected to the drive component, the energy storage component includes the latch and the energy storage spring that cooperates with the latch, the energy storage spring can be separately connected to the latch and the drive component in a snap-fit manner, and when the drive component moves, the energy storage spring is driven to act. Since the energy storage spring can be connected to the latch in a snap-fit manner, the energy storage spring can accumulate elastic potential energy. When the energy storage spring accumulates elastic potential energy driven by the drive component, the drive component may drive the on-off apparatus to act, to switch on the on-off apparatus. The latch cooperates with the tripping component. When the tripping component acts, the latch can be driven to act, so that the latch is no longer connected to the energy storage spring in a snap-fit manner and no longer locks the energy storage spring. In this case, the energy storage spring is connected to the drive component in a snap-fit manner in a process of restoration from elastic deformation, to drive the drive component to rotate to the switch-off position of the on-off apparatus to implement a switch-off operation of the on-off apparatus. This process does not require a continuous power output to be provided to switch off the on-off apparatus. This can improve reliability of a remote switch-off action of the rotary switch. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       To describe the technical solutions in the embodiments of the present application more clearly, the following briefly describes the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present application, and persons of ordinary skill in the art may obtain other accompanying drawings from these accompanying drawings without creative efforts. 
         FIG.  1    is a schematic diagram of a structure of a rotary switch according to an embodiment of the present application; 
         FIG.  2    is an exploded view of  FIG.  1   ; 
         FIG.  3    is a schematic diagram of a structure of an upper cover according to an embodiment of the present application; 
         FIG.  4    is a schematic diagram of a structure of a connection between a mounting base and a drive component according to an embodiment of the present application; 
         FIG.  5    is a schematic diagram of a structure of a mounting base according to an embodiment of the present application; 
         FIG.  6    is a schematic diagram of a structure of a drive component according to an embodiment of the present application; 
         FIG.  7    is a schematic diagram of a structure of a first elastic part according to an embodiment of the present application; 
         FIG.  8    is a schematic diagram 1 of a structure of a rotating base according to an embodiment of the present application; 
         FIG.  9    is a schematic diagram 2 of a structure of a rotating base according to an embodiment of the present application; 
         FIG.  10    is a schematic diagram 1 of a structure of cooperation between a rotating base and an upper cover according to an embodiment of the present application; 
         FIG.  11    is a schematic diagram 2 of a structure of cooperation between a rotating base and an upper cover according to an embodiment of the present application; 
         FIG.  12    is a schematic diagram of a structure of an energy storage spring according to an embodiment of the present application; 
         FIG.  13    is a schematic diagram of a structure of cooperation between an operating mechanism and a tripping component according to an embodiment of the present application; and 
         FIG.  14    is a schematic diagram of a structure of an on-off apparatus according to an embodiment of the present application. 
     
    
    
     Reference numerals:  100 . Rotary switch  110 . Operating mechanism  112 . Energy storage component  1122 . Latch  1122   a . Hinged part  1122   b . Locking part  1122   c . Tripping part  1122   d . Guide face  1122   e . Locking face  1124 . Energy storage spring  1124   a . Energy storage spring body  1124   b . First torsion arm  1124   c . Second torsion arm  1126 . Second elastic part  114 . Drive component  1142 . Rotating shaft  1142   a . Ring slot  1144 . Drive part  1144   a . First push part  1144   b . Second push part  1144   c . First protrusion  1144   d . Second protrusion  115 . Upper cover  1152 . First locking protrusion  1154 . Second locking protrusion  116 . Mounting base  1162 . Mounting slot  117 . Rotating base  1171 . Stopper  1172 . Rotating base body  1173 . Connection hole  1174 . First pawl  1176 . Second pawl  1177 . Preset space  1178 . First gap  1179 . Second gap  118 . First elastic part  1182 . Elastic body  1184 . First end part  1186 . Second end part  120 . On-off apparatus  122 . Moving contact component  124 . Fixed contact component  126 . Shaft coupler  128 . Mounting housing  130 . Tripping component  132 . Housing  134 . Trip unit  136 . Reset button  140 . Knob 
     DESCRIPTION OF EMBODIMENTS 
     To make the objectives, technical solutions, and advantages of embodiments of the present application clearer, the following clearly describes the technical solutions in embodiments of the present application with reference to the accompanying drawings in embodiments of the present application. It is clear that the described embodiments are some but not all of embodiments of the present application. Generally, components of the embodiments of the present application described and shown in the accompanying drawings may be arranged and designed with various different configurations. 
     Therefore, the following detailed description of the embodiments of the present application, which are set forth in the accompanying drawings, is not intended to limit the scope of protection of the present application, but merely represents selected embodiments of the present application. Other embodiments obtained by persons of ordinary skill in the art based on embodiments of the present application without creative efforts shall fall within the protection scope of the present application. 
     It should be noted that similar reference signs and letters refer to similar items in the following accompanying drawings. Therefore, once a specific item is defined in one of the accompanying drawings, it need not be further defined and explained in subsequent accompanying drawings. In addition, the terms “first”, “second”, and the like are only used for distinction and description, and shall not be understood as an indication or implication of relative importance. 
     In the description of the present application, it should be further noted that the terms “disposing” and “connection” should be understood in a broad sense unless otherwise expressly specified and limited, for example, may be a fixed connection, or may be a detachable connection, or may be an integral connection; may be a mechanical connection or an electrical connection; or may be a direct connection, an indirect connection based on an intermediate medium, or communicating inside two elements. For persons of ordinary skill in the art, specific meanings of the foregoing terms in the present application may be understood based on a specific situation. 
     Referring to  FIG.  1    and  FIG.  2   , the embodiments provide a rotary switch  100 , including an operating mechanism  110 , an on-off apparatus  120 , and a tripping component  130 , and the operating mechanism  110  includes an energy storage component  112  and a drive component  114 . The drive component  114  is separately in driving connection with the energy storage component  112  and the on-off apparatus  120 . The energy storage component  112  includes a latch  1122  and an energy storage spring  1124  that cooperates with the latch  1122 . The energy storage spring  1124  can be separately connected to the latch  1122  and the drive component  114  in a snap-fit manner, the drive component  114  is rotated, so that the energy storage component  112  can store energy, and the drive component  114  is used to drive the on-off apparatus  120  to be switched on. The latch  1122  cooperates with the tripping component  130 , so that the latch  1122  locks or unlocks the energy storage spring  1124 . When unlocked, the energy storage spring  1124  drives the drive component  114  to rotate to a switch-off position of the on-off apparatus  120 . 
     Specifically, the operating mechanism  110  is mainly used as an actuator for manual switch-on and remote automatic switch-off. When switch-on is required, the drive component  114  is rotated. In a movement process of the drive component  114 , the energy storage spring  1124  completes energy storage, and the on-off apparatus  120  is driven to act, to switch on the on-off apparatus  120 . When remote control switch-off is required, the tripping component  130  is made to act, by sending an electrical signal control instruction to the tripping component  130 . When the tripping component  130  acts, the latch  1122  is driven to act, so that the latch  1122  and the energy storage spring  1124  are separated in a snap-fit position, elastic potential energy accumulated by the energy storage spring  1124  is released, and in a process of releasing the elastic potential energy and restoration from elastic deformation, the drive component  114  is driven to rotate to the switch-off position of the on-off apparatus  120  to implement a switch-off operation of the on-off apparatus  120 . 
     In the rotary switch  100  according to the embodiments of the present application, the energy storage component  112  and the on-off apparatus  120  are separately connected to the drive component  114 , the energy storage component  112  includes the latch  1122  and the energy storage spring  1124  that cooperates with the latch  1122 , the energy storage spring  1124  can be separately connected to the latch  1122  and the drive component  114  in a snap-fit manner, and when the drive component  114  moves, the energy storage spring  1124  is driven to act. Since the energy storage spring  1124  can be connected to the latch  1122  in a snap-fit manner, the energy storage spring  1124  can accumulate elastic potential energy. When the energy storage spring  1124  accumulates elastic potential energy driven by the drive component  114 , the drive component  114  may drive the on-off apparatus  120  to act, to switch on the on-off apparatus  120 . The latch  1122  cooperates with the tripping component  130 . When the tripping component  130  acts, the latch  1122  can be driven to act, so that the latch  1122  is no longer connected to the energy storage spring  1124  in a snap-fit manner and no longer locks the energy storage spring  1124 . In this case, the energy storage spring  1124  is connected to the drive component  114  in a snap-fit manner in a process of restoration from elastic deformation, to drive the drive component  114  to rotate to the switch-off position of the on-off apparatus  120  to implement a switch-off operation of the on-off apparatus  120 . This process does not require a continuous power output to be provided to switch off the on-off apparatus  120 . This can improve reliability of a remote switch-off action of the rotary switch  100 . 
     As shown in  FIG.  3   ,  FIG.  4   , and  FIG.  5   , the operating mechanism  110  further includes an upper cover  115  and a mounting base  116  connected to the upper cover  115 . Referring to  FIG.  6    again, the drive component  114  includes a rotating shaft  1142  and a drive part  1144  connected to the rotating shaft  1142 . A mounting slot  1162  is disposed in the mounting base  116 . A rotating base  117  is disposed in the mounting slot  1162 , the rotating base  117  is connected to the on-off apparatus  120 , and a first elastic part  118  (shown in  FIG.  7   ) is disposed in the rotating base  117 . When the rotating shaft  1142  is rotated, the rotating base  117  can be driven to rotate by using the first elastic part  118 , to switch off or switch on the on-off apparatus  120 . 
     Specifically, the rotating shaft  1142  passes through the upper cover  115  and extends to a position in which the mounting base  116  is located. The drive part  1144  connected to the rotating shaft  1142  is located in the position in which the mounting base  116  is located. When the rotating shaft  1142  is rotated, the drive part  1144  is used to drive the first elastic part  118  to be elastically deformed, and an elastic force for the first elastic part  118  to restore from elastic deformation causes the rotating base  117  to rotate, to drive the on-off apparatus  120  to switch off or switch on. Because the rotating base  117  rotates in the mounting slot  1162 , an outer ring of the rotating base  117  and an inner ring of the mounting slot  1162  are circular, to facilitate relative rotation. 
     It should be noted that the embodiments do not impose a specific limitation on the first elastic part  118 , provided that a required driving force for switching off or switching on the on-off apparatus  120  can be provided. For example, the first elastic part  118  may be an elastic part such as a torsion spring or a clockwork spring, in a process in which when the rotating shaft  1142  is rotated so that the energy storage spring  1124  stores energy, the first elastic part  118  is driven to elastically deform, and the first elastic part  118  drives the rotating base  117  to rotate, to switch on the on-off apparatus  120 . In a process of releasing the energy of the energy storage spring  1124 , the first elastic part  118  is also restored from elastic deformation to perform work, and drives the rotating base  117  to rotate back, to switch off the on-off apparatus  120 . 
     As shown in  FIG.  6    and  FIG.  8   , a first push part  1144   a  and a second push part  1144   b  are disposed on the drive part  1144 . The rotating base  117  includes a rotating base body  1172 , and a first pawl  1174  and a second pawl  1176  disposed on the rotating base body  1172 . The first pawl  1174  and the second pawl  1176  are disposed opposite to each other, and there is a preset space  1177  between an end face of the first pawl  1174  and an end face of the second pawl  1176 . Referring to  FIG.  3    again, a first locking protrusion  1152  and a second locking protrusion  1154  are disposed on the upper cover  115  at a corresponding interval, and both the first locking protrusion  1152  and the second locking protrusion  1154  can be clamped in the preset space  1177 . There is a first gap  1178  between the first pawl  1174  and the rotating base body  1172 , and there is a second gap  1179  between the second pawl  1176  and the rotating base body  1172 . The first push part  1144   a  is capable of abutting against the first pawl  1174 , so that the first pawl  1174  retracts towards the first gap  1178 , to be released from locking of the first locking protrusion  1152 . The second push part  1144   b  is capable of abutting against the second pawl  1176 , so that the second pawl  1176  retracts towards the second gap  1179 , to be released from locking of the second locking protrusion  1154 . 
     Specifically, in a process of manually operating the rotating shaft  1142  to rotate so that the energy storage spring  1124  stores energy and then drives the on-off apparatus  120  to be switched on, the drive part  1144  is rotated synchronously with the rotating shaft  1142 . At an initial moment at which the drive part  1144  is rotated, the first push part  1144   a  moves towards the first pawl  1174 . As the rotation continues, the first push part  1144   a  abuts against the first pawl  1174  (as shown in  FIG.  10   ), and continues to push the first pawl  1174  forward until the first push part  1144   a  presses the first pawl  1174  to deform towards the first gap  1178  (as shown in  FIG.  11   ). In a process in which the first pawl  1174  is pressed by the first push part  1144   a  and then deformed, the end face of the first pawl  1174  is misaligned with the first locking protrusion  1152 , so that the rotating base  117  can be continuously rotated, to switch on the on-off apparatus  120 . When the on-off apparatus  120  is switched on, the preset space  1177  between the end face of the first pawl  1174  and the end face of the second pawl  1176  corresponds to the second locking protrusion  1154  to lock the rotating base  117  to prevent an unexpected action of the on-off apparatus  120 . This helps to ensure stability of a state of the on-off apparatus  120 . 
     Similarly, in a process of remote control switch-off, the tripping component  130  acts to make the latch  1122  unlock the energy storage spring  1124 . In a switch-off process, elastic potential energy accumulated by the energy storage spring  1124  is released to drive the rotating shaft  1142  to rotate back. The drive part  1144  is rotated synchronously with the rotating shaft  1142 , and the second push part  1144   b  moves towards the second pawl  1176 . As the rotation continues, the second push part  1144   b  abuts against the second pawl  1176 , and continues to push the second pawl  1176  forward until the second push part  1144   b  presses the second pawl  1176  to deform towards the second gap  1179 . In a process in which the second pawl  1176  is pressed by the second push part  1144   b  and then deformed, the end face of the second pawl  1176  is misaligned with the second locking protrusion  1154 , so that the rotating base  117  can be continuously rotated, to switch off the on-off apparatus  120 . When the on-off apparatus  120  is switched off, the preset space  1177  between the end face of the first pawl  1174  and the end face of the second pawl  1176  corresponds to the first locking protrusion  1152 , so that rotation of the rotating base  117  can be driven only by the operating mechanism  110  to prevent an unexpected action of the on-off apparatus  120 . This helps to ensure stability of a state of the on-off apparatus  120 . 
     As shown in  FIG.  6    to  FIG.  8   , a first protrusion  1144   c  facing the rotating base  117  is further disposed on the drive part  1144 , a stopper  1171  is further disposed in the rotating base  117 , and in an optional embodiment of this application, the first elastic part  118  includes an elastic body  1182 , and a first end part  1184  and a second end part  1186  separately connected to the elastic body  1182 . The first end part  1184  abuts against the first protrusion  1144   c , and the second end part  1186  abuts against the stopper  1171 . 
     Specifically, in a process of manually operating the rotating shaft  1142  to rotate to perform switch-on, the drive part  1144  is rotated, so that the first elastic part  118  is elastically deformed. As the rotation continues, the first push part  1144   a  abuts against the first pawl  1174 , and continues to push the first pawl  1174  forward until the first push part  1144   a  presses the first pawl  1174  to deform towards the first gap  1178 , so that the first pawl  1174  passes the first locking protrusion  1152 . After the first pawl  1174  passes the first locking protrusion  1152 , the first locking protrusion  1152  no longer plays a locking role on the rotating base  117 , and the first elastic part  118  drives the rotating base  117  to switch on the on-off apparatus  120  through the stopper  1171 . Similarly, in a process of remote control switch-off, elastic potential energy accumulated by the energy storage spring  1124  is released to drive the rotating shaft  1142  to rotate back. The drive part  1144  is rotated synchronously with the rotating shaft  1142 . The second push part  1144   b  abuts against the second pawl  1176 , and continues to push the second pawl  1176  forward until the second push part  1144   b  presses the second pawl  1176  to deform towards the second gap  1179 . In a process in which the second pawl  1176  is pressed by the second push part  1144   b  and then deformed, the end face of the second pawl  1176  is misaligned with the second locking protrusion  1154 , and the first elastic part  118  drives the rotating base  117  to rotate back by using the stopper  1171 , to switch off the on-off apparatus  120 . 
     As shown in  FIG.  2   ,  FIG.  12   , and  FIG.  13   , the energy storage spring  1124  is disposed on the rotating shaft  1142 , the energy storage spring  1124  includes an energy storage spring body  1124   a , and a first torsion arm  1124   b  and a second torsion arm  1124   c  separately connected to the energy storage spring body  1124   a , and a second protrusion  1144   d  away from the rotating base  117  is further disposed on the drive part  1144 . The first torsion arm  1124   b  is connected to the upper cover  115  in a snap-fit manner, and the second torsion arm  1124   c  abuts against the second protrusion  1144   d . The latch  1122  includes a hinged part  1122   a  hinged with the upper cover  115 , a locking part  1122   b  for locking the second torsion arm  1124   c , and a tripping part  1122   c  that cooperates with the tripping component  130 . The latch  1122  cooperates with the tripping component  130  by using the tripping part  1122   c.    
     Specifically, when the rotating shaft  1142  is rotated so that the drive part  1144  is rotated synchronously with the rotating shaft  1142 , the second protrusion  1144   d  of the drive part  1144  drives the second torsion arm  1124   c  of the energy storage spring  1124  to move synchronously with the drive part  1144 , and the first torsion arm  1124   b  of the energy storage spring  1124  is connected to the upper cover  115  in a snap-fit manner, so that the energy storage spring  1124  is elastically deformed in a movement process of the drive part  1144 , thereby generating elastic potential energy and switching on the on-off apparatus  120  at the same time. When the second protrusion  1144   d  of the drive part  1144  drives the second torsion arm  1124   c  of the energy storage spring  1124  to move synchronously with the drive part  1144 , the second torsion arm  1124   c  of the energy storage spring  1124  is clamped to the locking part  1122   b , so that elastic potential energy generated by the energy storage spring  1124  is maintained. When the energy storage spring  1124  is locked, the rotating shaft  1142  may be rotated back and forth to switch off or switch on the rotary switch  100 . In addition, when the energy storage spring  1124  is locked by the latch  1122  to store energy, if the rotating shaft  1142  is rotated to switch on the rotary switch  100 , there is no need to drive the energy storage spring  1124  to elastically deform, and therefore, the switch-on is more labor-saving. 
     The tripping component  130  is configured to receive a control signal, and act based on the control signal, for example, exerting a force on the tripping part  1122   c  to move the tripping part  1122   c  away from a position in which the tripping component  130  is located. When the tripping part  1122   c  moves away from the tripping component  130 , the hinged part  1122   a  of the latch  1122  and the upper cover  115  are rotated relative to each other, so that the locking part  1122   b  of the latch  1122  moves. The second torsion arm  1124   c  of the energy storage spring  1124  is no longer limited, and the energy storage spring  1124  can be restored from elastic deformation, to drive the drive part  1144  to rotate, so that the drive part  1144  is rotated to a switch-off position, thereby completing a switch-off operation of the on-off apparatus  120 . 
     As shown in  FIG.  13   , a guide face  1122   d  is disposed between the hinged part  1122   a  and the locking part  1122   b , and a locking face  1122   e  is disposed on a side, of the locking part  1122   b , away from the guide face  1122   d.    
     Specifically, when the rotating shaft  1142  drives the drive part  1144  to rotate, the second protrusion  1144   d  on the drive part  1144  drives the second torsion arm  1124   c  to rotate following the drive part  1144 . When the second torsion arm  1124   c  moves, the second torsion arm  1124   c  abuts against the guide face  1122   d , and moves along the guide face  1122   d  to a position in which the locking part  1122   b  is located. When the second torsion arm  1124   c  moves to a side, of the locking part  1122   b , away from the guide face  1122   d , that is, when the second torsion arm  1124   c  moves to a side, of the locking part  1122   b , provided with the locking face  1122   e , the second torsion arm  1124   c  is locked by the locking part  1122   b . Even if the drive part  1144  no longer exerts a force on the second torsion arm  1124   c , the second torsion arm  1124   c  cannot be restored to an initial state, so that an energy storage operation is performed on the energy storage spring  1124 . 
     When the tripping component  130  receives a tripping signal, the tripping component  130  acts to move the tripping part  1122   c  away from the position in which the tripping component  130  is located. In a movement process of the tripping part  1122   c , a locking amount of the locking face  1122   e  for the second torsion arm  1124   c  of the energy storage spring  1124  is gradually reduced until the second torsion arm  1124   c  is released from a locking action of the locking part  1122   b . After the second torsion arm  1124   c  is released from the action of the locking part  1122   b  of the latch  1122 , the elastic potential energy accumulated by the energy storage spring  1124  is released, and the second protrusion  1144   d  is used to drive the drive part  1144  to rotate to a switch-off position, so that the on-off apparatus  120  is switched off 
     As shown in  FIG.  2    and  FIG.  13   , the tripping component  130  includes a housing  132  and a trip unit  134  disposed in the housing  132 , the housing  132  is connected to the operating mechanism  110 , and a reset button  136  is further disposed on the housing  132 , to reset the trip unit  134  after the latch  1122  unlocks the energy storage spring  1124 . 
     Specifically, the trip unit  134  may be any one of a magnetic flux converter, a shunt trip unit, an undervoltage trip unit, and an overvoltage trip unit. An action of the trip unit  134  is controlled by an electrical signal, so that the latch  1122  releases limit on the energy storage spring  1124 , so that the rotary switch  100  responds quickly and implements a remote switch-off function. After the trip unit  134  acts, the trip unit  134  needs to be reset manually to facilitate a next action. The reset button  136  is used to make a reset operation of the trip unit  134  easier without using other auxiliary tools. 
     As shown in  FIG.  13   , the energy storage component  112  further includes a second elastic part  1126 , and the second elastic part  1126  is connected to the latch  1122 , so that the latch  1122  locks the energy storage spring  1124 . 
     For example, the second elastic part  1126  is disposed between the latch  1122  and the upper cover  115 , or the second elastic part  1126  is disposed between the latch  1122  and the mounting base  116 . Specifically, when the second elastic part  1126  is disposed between the latch  1122  and the upper cover  115 , the second elastic part  1126  may be in a form of a compression spring or an elastic sheet, so that there is a repulsive force between the latch  1122  and the upper cover  115 , and the tripping part  1122   c  tends to move towards the trip unit  134 . When the second elastic part  1126  is disposed between the latch  1122  and the mounting base  116 , the second elastic part  1126  may be in a form of a tension spring or an elastic rope, so that the tripping part  1122   c  tends to move towards the trip unit  134 , to ensure that the locking part  1122   b  can stably lock the second torsion arm  1124   c  of the energy storage spring  1124 . 
     As shown in  FIG.  9    and  FIG.  14   , the on-off apparatus  120  includes a mounting housing  128 , and a moving contact component  122 , a fixed contact component  124 , and a shaft coupler  126  disposed in the mounting housing  128 . The moving contact component  122  is connected to the rotating base  117  through the shaft coupler  126 , so that the rotating base  117  drives the moving contact component  122  to be in contact with or separate from the fixed contact component  124 . 
     For example, a connection hole  1173  is correspondingly disposed on the rotating base  117 , so that the shaft coupler  126  is connected to the rotating base  117 , and the moving contact component  122  is also connected to the shaft coupler  126 , so that the moving contact component  122  and the rotating base  117  are rotated synchronously. Connected conductors are disposed on the moving contact component  122 , and there are two fixed contact components  124 . Also, a conductor is disposed on each fixed contact component  124 . The moving contact component  122  is rotated, so that the conductors on the moving contact component  122  are respectively connected to the conductors on the two fixed contact components to form a connected circuit. When the moving contact component is rotated to another position, the conductors on the two fixed contact components  124  are disconnected to form an open circuit. 
     As shown in  FIG.  2    and  FIG.  6   , a sealing ring is disposed on the rotating shaft  1142 , and the sealing ring is located between the rotating shaft  1142  and the upper cover  115 . A knob  140  is further disposed on the rotating shaft  1142 , and the knob  140  is located on an end, of the rotating shaft  1142 , away from the drive part  1144 . 
     Specifically, a ring slot  1142   a  is disposed on the rotating shaft  1142 , and the sealing ring is disposed on the outer ring of the ring slot  1142   a , so that a position of the sealing ring and a position of the rotating shaft  1142  are relatively fixed. When the rotating shaft  1142  passes through the upper cover  115  and is rotatably connected to the upper cover  115 , the sealing ring can play a seal role to enhance sealing performance of the rotary switch  100 . At the same time, the knob  140  disposed on the rotating shaft  1142  is used to make it more labor-saving when the rotary switch  100  is manually operated, which is convenient for operation. 
     The foregoing descriptions are merely some embodiments of the present application and are not intended to limit the present application, and various changes and modifications would have been made by persons skilled in the art. Any modification, equivalent replacement, or improvement made without departing from the principle of the present application shall fall within the protection scope of the present application.