Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H3/00—Mechanisms for operating contacts
  • H01H3/001—Means for preventing or breaking contact-welding
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
  • H01H19/02—Details
  • H01H19/03—Means for limiting the angle of rotation of the operating part
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
  • H01H19/02—Details
  • H01H19/10—Movable parts; Contacts mounted thereon
  • H01H19/20—Driving mechanisms allowing angular displacement of the operating part to be effective in either direction
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
  • H01H9/20—Interlocking, locking, or latching mechanisms
  • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
  • H01H2009/288—Provisions relating to welded contacts

Definitions

• the invention belongs to the field of rotary switches, and in particular relates to an operating mechanism for rotary switches.
• Rotary switch is a kind of isolating switch.
• the movable and static contacts When in the open position, the movable and static contacts should have an insulation distance that meets the specified requirements, and the switch has an obvious disconnection mark; in the closed position, the contacts should be able to carry The current under normal loop conditions and the current under abnormal conditions within a specified time.
• electrician operation is required, in order to ensure the safety of personnel, it is necessary to open and cut off the power. If necessary, a padlock is required to prevent misoperation by others and ensure personnel safety.
• the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide an operating mechanism for a rotary switch.
• an operating mechanism for a rotary switch including a mounting base, the mounting base is provided with an operating rod assembly for manual rotation, a turntable assembly, the operating rod assembly and An energy storage element is arranged between the turntable components, the turntable component realizes closing or opening of the switch through forward or reverse rotation, the rotation of the operating lever assembly causes the energy storage component to drive the turntable component to rotate, and the mounting base
• An inner hinged limiting member, the limiting member includes a pushing portion and a blocking portion, the turntable assembly and the pushing portion cooperate so that the limiting member can rotate relative to the mounting base to have a first position and a second position: When the turntable assembly is in the closing position, the turntable assembly abuts the pushing portion to make the stopper be located at the first position, and the blocking portion is located on the operating rod assembly or on the rotation path of the energy storage element for the operating rod
• the rotation of the assembly constitutes a blocking and limiting effect; when the turntable assembly is at the opening position, the turntable assembly
• the limiting member is provided with a first reset elastic member for positioning the limiting member at the second position.
• the limiting member includes a first spring limiting post located on the pushing portion, the first return elastic member is a compression spring and sleeved on the first spring limiting post, and the mounting base is provided with a spring limiting post. Bit slot.
• the side wall of the pushing part is provided with a first smooth curved surface matched with the turntable assembly.
• the operating rod assembly includes an operating rod and a cam sleeved on the operating rod and circumferentially linked with the operating rod, and the turntable assembly includes a turntable and a slide that is arranged on the turntable and can slide radially relative to the turntable.
• the mounting base is provided with two sliding block slots corresponding to the opening and closing positions of the turntable assembly, and a second sliding block is provided between the turntable and the sliding block for inserting the sliding block into the sliding block slot.
• a reset elastic member when the slider is located in the slider slot, the turntable assembly is in a non-rotatable state, and when the slider leaves the slider slot, the turntable assembly is in a rotatable state; the slider A push plate is arranged under the cam and corresponding to the cam, and the cam rotates the push plate to make the slider move away from the slider slot.
• the turntable is provided with a raised side plate, the inner side of the side plate is provided with a second spring limit post, and the push plate is provided with a first Through the hole, the second reset elastic member is a compression spring and sleeved on the second spring limit post, and both ends of the second reset elastic member abut against the side plate and the push plate respectively.
• the mounting base is provided with a first limit baffle and a second limit baffle that cooperate with the side plate, and the side plate rotates between the first limit baffle and the second limit baffle .
• the energy storage element is a disc-shaped torsion spring with two elastic arms, the cam protrudes upwards with a first spring top plate, the slider protrudes upwards with a second spring top plate, the first spring top plate
• the second spring top plate and the second spring top plate have the same width, and the two elastic arms respectively abut against the two sides of the first spring top plate and the second spring top plate.
• the turntable is provided with a square bump
• the slider is provided with a square sliding groove that is slidingly matched with the square bump.
• the square bump is provided with a circular through hole, and the bottom of the operating rod is inserted into the circular through hole.
• the operating rod assembly is connected to the handle, and the handle rotates so that the energy storage element drives the turntable assembly to rotate to realize the closing or opening of the switch.
• the turntable assembly Keep in the closed position and cannot rotate, the turntable assembly is against the pushing part, and the blocking part prevents the operating lever assembly from rotating to the open position.
• the rotating handle shows that it is not in the disconnected state. It is used for switches with an opening padlock structure, which cannot be realized. The padlock is locked, and the operator will easily find that the weld is dead, and take further safety operations to reduce potential safety hazards.
• Figure 1 is a perspective view of the operating mechanism
• Figure 2 is a top view of the internal structure of the operating mechanism
• Figure 3 is a perspective view of the mounting base
• Figure 4 is a schematic structural diagram of the connection between the operating lever assembly and the turntable assembly
• Figure 5 is a schematic view of the structure of the cam and the turntable assembly
• Figure 6 is a schematic diagram of the structure of the turntable assembly, (a) is the structure when the slider is located in the slider slot, (b) is the structure when the slider leaves the slider slot;
• Figure 7 is a schematic diagram of the structure of the turntable
• an operating mechanism for a rotary switch includes a mounting base 1.
• the mounting base 1 is provided with an operating lever assembly 2 for manual rotation, a turntable assembly 3, and the An energy storage element 4 is provided between the operating rod assembly 2 and the turntable assembly 3.
• the turntable assembly 3 realizes closing or opening of the switch through forward or reverse rotation.
• the operating rod assembly 2 rotates to make the energy storage element 4 Drive the turntable assembly 3 to rotate.
• the mounting base 1 is hinged with a limiting member 5.
• the limiting member 5 includes a pushing portion 501 and a blocking portion 502.
• the turntable assembly 3 cooperates with the pushing portion 501 to make the limiting member 5 It has a first position and a second position rotatable relative to the mounting base 1.
• the turntable assembly 3 When the turntable assembly 3 is in the closing position, the turntable assembly 3 abuts the pushing part 501 so that the limiting member 5 is located In the first position, the blocking portion 502 is located on the rotation path of the operating rod assembly 2 or the energy storage element 4 to block and limit the rotation of the operating rod assembly 2; when the turntable assembly 3 is at the opening position, The turntable assembly 3 is separated from the pushing part 501, the limiting member 5 is located at the second position, and the blocking part 502 releases the blocking and limiting effect on the rotation of the operating rod assembly 2. Under normal circumstances, the operating lever assembly is connected to the handle, and the handle rotates so that the energy storage element drives the turntable assembly to rotate to realize the closing or opening of the switch.
• the turntable assembly cannot be rotated at the closing position. , The turntable assembly is against the pushing part, and the blocking part prevents the operating lever assembly from rotating to the opening position.
• the rotating handle does not show the disconnected state. It is used for switches with an opening padlock structure. The padlock cannot be locked and the operator will be easy If weld failure is found, further safety operations shall be taken to reduce potential safety hazards.
• the limiting member 5 is provided with a first reset elastic member 503 for positioning the limiting member 5 at the second position.
• the limiting member 5 includes a first spring limiting post 504 located on the pushing portion 501, the first reset elastic member 503 is a compression spring and sleeved on the first spring limiting post 504, the mounting base 1 is provided with a spring limit slot 101.
• a torsion spring can also be arranged on the hinge column to realize the resetting and pushing effect.
• the side wall of the pushing portion 501 is provided with a first smooth curved surface 505 that cooperates with the turntable assembly 3.
• the turntable assembly 3 and the operating lever assembly 2 are both in the closed state, and the limiting member 5 is located in the first position.
• the turntable assembly 3 rotates counterclockwise
• the limiting member 5 rotates counterclockwise around the hinge column under the thrust of the first reset elastic member 503
• the limiting member 5 rotates to the second position
• the blocking part 502 releases the blocking and limiting effect on the rotation of the operating lever assembly 2.
• the turntable assembly 3 When the turntable assembly 3 rotates clockwise and returns to the original position, the turntable assembly 3 pushes the pushing part 501 to make the stopper 5 rotate clockwise around the hinge column, the stopper 5 rotates back to the first position, and the blocking part 502 is located in the energy storage element On the rotation path of 4, it serves to prevent the energy storage element 4 and the operating rod assembly 2 from further rotating.
• the first smooth curved surface 505 plays a role in reducing friction and facilitates pushing.
• the energy storage element 4 has two elastic arms 401. When the limiting member 5 is in the first position, the blocking portion 502 is located on the rotation path of the elastic arm 401 on the right side of the elastic arm in FIG. 4, and it can also be provided on the operating lever assembly 2. Restricting bumps that cooperate with the restriction member 5.
• the operating rod assembly 2 includes an operating rod 201 and a cam 202 sleeved on the operating rod 201 and circumferentially linked with the operating rod 201.
• the turntable assembly 3 includes a turntable 301 and a cam 202 arranged on the turntable.
• a slider 302 on the 301 and radially slidable relative to the turntable 301 is provided with two slider slots 102 corresponding to the opening and closing positions of the turntable assembly 3 on the mounting base 1.
• a second reset elastic member 303 for inserting the slider 302 into the slider slot 102.
• the turntable assembly 3 In the rotating state, when the slider 302 leaves the slider slot 102, the turntable assembly 3 is in a rotatable state; the slider 302 is arranged under the cam 202 and a push plate 3011 is provided corresponding to the cam 202.
• the cam 202 rotates the push plate 3011 to make the slider move away from the slider slot 102.
• the cam and the sliding block are set to play the role of positioning the turntable assembly 3 when turning to open or close, and to maintain the open or closed state.
• the turntable 301 is provided with a raised side plate 304, the inner side of the side plate 304 is provided with a second spring limit post 305, and the push plate 3011 is provided with a second spring limit post 305 passing through and To the first through hole 306, the second reset elastic member 303 is a compression spring and is sleeved on the second spring limit post 305, and both ends of the second reset elastic member 303 abut against the side plate 304 and Push plate 3011.
• the mounting base 1 is provided with a first limit baffle 103 and a second limit baffle 104 that cooperate with the side plate 304, and the side plate 304 is positioned between the first limit baffle 103 and the second limit baffle 103.
• the position baffle 104 rotates between.
• the energy storage element 4 is a disc-shaped torsion spring with two elastic arms 401, the cam 202 is provided with a first spring top plate 203 protruding upward, and the slider 302 is provided with a second spring top plate 307 protruding upward,
• the first spring top plate 203 and the second spring top plate 307 have the same width, and the two elastic arms 401 abut against both sides of the first spring top plate 203 and the second spring top plate 307 respectively.
• the figure shows the closed state.
• the operating lever 201 and the cam 202 rotate counterclockwise, the cam 202 pushes the elastic arm 401 on the right side in Figure 4 to the closed position, and the convex part of the cam 202 pushes the push plate 3011.
• the turntable assembly 3 is not rotatable in the mounting base 1, and the elastic arm 401 on the left turns the turntable assembly 3 to the closing position.
• the cam 202 pushes the elastic arm 401 on the left in FIG. 4 to the opening position, and at the same time pushes the push plate 3011 to move the slider 302 away from the other slider slot 102, and the elastic arm 401 on the right rotates the turntable assembly 3 with it. Opening position.
• the turntable assembly 3 cannot be rotated.
• the operating lever assembly 2 is rotated to the position of the blocking part 502, it can no longer be rotated.
• the energy storage element 4 is carried The operating lever assembly 2 rotates back to the original position.
• the turntable 301 is provided with a square protrusion 308, and the slider 302 is provided with a square sliding groove 309 that is slidingly matched with the square protrusion 308.
• the square bump 308 is provided with a circular through hole 3010, and the bottom of the operating rod 201 is inserted into the circular through hole 3010. Play the role of fixing the operating rod 201.
• the slider when the slider leaves the chute, it forms a cylindrical shape with the outer circumference of the turntable.
• the turntable is provided with a side plate 304 as a fan-shaped protrusion.
• the fan-shaped protrusion interacts with the first limiting baffle 103 and the The two limit baffles 104 cooperate to form a limit of the rotation angle.
• the fan-shaped protrusion cooperates with the pushing part 501.

Landscapes

• Mechanisms For Operating Contacts (AREA)
• Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

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ID=66261920

Family Applications (1)

Country Status (4)

Cited By (1)

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Citations (6)

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• 2019
  • 2019-01-25 CN CN201910072197.2A patent/CN109712839B/zh active Active
  • 2019-07-12 WO PCT/CN2019/095823 patent/WO2020151202A1/zh active Application Filing
  • 2019-07-12 DE DE112019003689.0T patent/DE112019003689T5/de active Pending
  • 2019-09-24 AU AU2019236615A patent/AU2019236615B2/en active Active

Patent Citations (6)

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