CN115513002B - Load switch for fixed switch cabinet - Google Patents

Load switch for fixed switch cabinet Download PDF

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Publication number
CN115513002B
CN115513002B CN202211430668.0A CN202211430668A CN115513002B CN 115513002 B CN115513002 B CN 115513002B CN 202211430668 A CN202211430668 A CN 202211430668A CN 115513002 B CN115513002 B CN 115513002B
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China
Prior art keywords
joint
slide bar
groove
joint groove
support
Prior art date
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Active
Application number
CN202211430668.0A
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Chinese (zh)
Other versions
CN115513002A (en
Inventor
刘正南
刘炉钢
孟利兴
费国柱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zhong Zhong Switch Factory Co ltd
Original Assignee
Jiangsu Zhong Zhong Switch Factory Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Jiangsu Zhong Zhong Switch Factory Co ltd filed Critical Jiangsu Zhong Zhong Switch Factory Co ltd
Priority to CN202211430668.0A priority Critical patent/CN115513002B/en
Publication of CN115513002A publication Critical patent/CN115513002A/en
Application granted granted Critical
Publication of CN115513002B publication Critical patent/CN115513002B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • 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
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • 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
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • 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
    • H01H9/286—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a removable locking part acting directly on the operating part

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

The invention discloses a load switch used on a fixed switch cabinet, which relates to the technical field of electrical equipment and comprises an on-off module, wherein the on-off module comprises a ceramic barrel, a first contact and a second contact are fixedly arranged on the ceramic barrel, an electrifying rod rotating seat is rotatably arranged in the ceramic barrel through a rotating seat support, an electrifying rod is fixedly arranged on the electrifying rod rotating seat, and a rectangular through hole is formed in the ceramic barrel. According to the invention, through the arrangement of the control module, a user can lock the knob, and when an irrelevant person twists the knob, a circuit cannot be connected; the arc generated when the circuit is switched on and off is attracted into the arc extinguishing grid by arranging the switching-on and switching-off module, and the arc is divided into a plurality of sections, so that the arc extinguishing function is realized; the knob can be locked or unlocked by controlling the electromagnet without manually locking or unlocking the knob, so that the automation degree of the device is improved.

Description

Load switch for fixed switch cabinet
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a load switch used on a fixed switch cabinet.
Background
The load switch has a certain arc extinguishing capacity, so that it can be used for opening and closing load current and 3-4 times overload current, and can be used for opening and closing load current, and can be matched with high-voltage fuse, instead of circuit breaker.
In the prior art, an invention patent with publication number CN112786395A discloses a load switch, which comprises a front partition, a rear partition, an upper beam, a lower beam, a grounding stationary contact mounting plate and a rotating shaft; the upper cross beam and the lower cross beam are both made of insulating plastics; the rear partition plate is fixedly connected with the upper cross beam, the lower cross beam and the front side of the grounding static contact seat mounting plate through bolts; and the front partition plate is fixedly connected with the rear sides of the upper beam, the lower beam and the grounding static contact seat mounting plate by bolts. The upper metal support and the lower metal support in the traditional load switch are omitted, the whole weight of the load switch is reduced, the beam made of insulating plastic is directly fixed between the front partition plate and the rear partition plate through the connecting bolt, the whole load switch is more convenient and simpler to disassemble and assemble, the insulating property is good, the insulating composite material is adopted, and the high temperature resistance is realized.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a load switch used on a fixed switch cabinet comprises an on-off module, wherein the on-off module comprises a ceramic barrel, a first contact and a second contact are fixedly installed on the ceramic barrel, a power-on rod rotating seat is rotatably installed in the ceramic barrel through a rotating seat support, a power-on rod is fixedly installed on the power-on rod rotating seat, a rectangular through hole is formed in the ceramic barrel, and an arc extinguishing grid is fixedly installed in the through hole; control module, control module include with ceramic bucket fixed connection's panel, rotate on the panel and install free frame, rotate on the free frame and install output sun gear, output sun gear and circular telegram pole roating seat fixed connection, output sun gear side overlap joint has input sun gear, output sun gear and input sun gear all with free gear meshing, free gear rotates and installs on free frame, free frame goes up the joint has the joint piece, fixed mounting has the joint round pin on the joint piece, joint piece side is provided with the electro-magnet, the side of joint round pin is provided with the joint groove, the joint groove passes through joint groove slide bar slidable mounting on joint groove slide bar support, fixedly connected with unblock promotes a support on the joint groove slide bar support, the unblock promotes on the support sliding connection have the unblock to promote the piece, the unblock promotes on the piece fixedly connected with passively inhales the guide block.
Preferably, the input central gear is fixedly provided with an input shaft, the input shaft is fixedly connected with the knob, the free frame is rotatably connected with the rotating cover, the rotating cover is fixedly arranged on the panel, and the rotating cover is fixedly provided with two limiting strips.
Preferably, joint piece slidable mounting is on the joint slide bar, and joint slide bar fixed mounting is on the slide bar support, and slide bar support fixed mounting is on the panel, and it has joint piece reset spring to surround on the joint slide bar, and the both ends of joint piece reset spring respectively with joint piece and slide bar support fixed connection.
Preferably, the electromagnet is fixedly installed on the sliding rod support, the clamping pin is connected with the electromagnet and the sliding rod support in a sliding mode, and a groove is formed in the clamping pin.
Preferably, the clamping groove slide bar support is fixedly mounted on the slide bar support, the clamping groove slide bar is fixedly connected with the clamping groove slide bar support, and the clamping groove is slidably connected with the clamping groove slide bar.
Preferably, a clamping groove reset spring is fixedly connected between the clamping groove slide bar support and the opposite surface of the clamping groove, and the clamping groove reset spring is surrounded on the outer side of the clamping groove slide bar.
Preferably, the fixed unblock lug that is provided with in joint groove, unblock lug and unblock promote piece sliding connection, be provided with the barb on the joint groove.
Preferably, a latch groove is formed in the clamping block, a pulling padlock plate is lapped in the latch groove, a hand pull ring is fixedly mounted on the pulling padlock plate, a through hole is formed in one end, far away from the clamping block, of the pulling padlock plate, and the hand pull ring and the pulling padlock plate are slidably mounted on the shell.
Preferably, the shell is fixedly installed on the panel, the knob is rotatably installed on the shell, the input shaft is rotatably connected with the shell, and the input shaft is fixedly provided with the limiting shifting piece.
Compared with the prior art, the invention has the following beneficial effects: (1) According to the invention, by arranging the control module, a user can lock the knob, and when an irrelevant person twists the knob, a circuit cannot be connected; (2) According to the invention, the on-off module is arranged, so that an electric arc generated when a circuit is switched on and off is attracted into the arc extinguishing grid, and the electric arc is divided into a plurality of sections, thereby realizing the arc extinguishing function; (3) The invention can lock or unlock the knob by controlling the electromagnet without manually locking or unlocking the knob, thereby improving the automation degree of the device.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial structural sectional view of the housing of the present invention.
FIG. 3 is a cross-sectional view of the on-off module configuration of the present invention.
Fig. 4 is a schematic structural diagram of the on-off module according to the present invention.
FIG. 5 is a schematic diagram of a control module according to the present invention.
Fig. 6 is a front view of the control module structure of the present invention.
FIG. 7 is a schematic view of the structure of the position A in FIG. 6 according to the present invention.
Fig. 8 is a sectional view of the rotating cap structure of the present invention.
FIG. 9 is a schematic view of the free gear structure of the present invention.
FIG. 10 is a schematic view of the structure of the engagement groove of the present invention.
FIG. 11 is a top view of the snap-in groove structure of the present invention.
FIG. 12 is a schematic structural view of an unlocking pushing block of the present invention.
In the figure: 101-a ceramic barrel; 102-arc chute; 103-a first contact; 104-power-on pole; 105-a live rod swivel; 106-a second contact; 107-swivel mount support; 201-a panel; 202-free frame; 203-input shaft; 204 — input sun gear; 205-output sun gear; 206-a housing; 207-knob; 208-a limit shifting block; 209-rotating the cover; 210-loose gear; 211-a card block; 2111-bolt slot; 212-snap block reset spring; 213-clamping the sliding rod; 214-a sliding bar support; 215-snap pins; 216-a snap groove; 2161-unlocking tab; 217-pulling the padlock plate; 218-a hand ring; 219-an electromagnet; 220-clamping the groove slide bar bracket; 221-unlocking the push block holder; 222-passive suction block; 223-unlocking the push block; 224-a snap groove slide bar; 225-snap groove reset spring.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The invention provides a technical scheme that: the utility model provides a load switch who uses on fixed cubical switchboard, as shown in fig. 3-4, the break-make module includes ceramic bucket 101, ceramic bucket 101 fixed mounting has first contact 103 and second contact 106, rotate through roating seat support 107 in the ceramic bucket 101 and install logical pole roating seat 105, fixed mounting has logical pole 104 on the logical pole roating seat 105, the rectangle through-hole has been seted up on the ceramic bucket 101, and fixed mounting has arc extinguishing bars 102 in the through-hole, it explains that the both ends and the ceramic bucket 101 inner wall friction of circular telegram pole 104 are connected for provide the damping when rotatory.
As shown in fig. 1-2 and 5-12, the control module includes a panel 201 fixedly connected to the ceramic barrel 101, a free frame 202 is rotatably mounted on the panel 201, an output central gear 205 is rotatably mounted on the free frame 202, the output central gear 205 is fixedly connected to the power rod rotary base 105, an input central gear 204 is lapped on the side surface of the output central gear 205, the output central gear 205 and the input central gear 204 are both in gear engagement with a free gear 210, the free gear 210 is rotatably mounted on the free frame 202, a clamping block 211 is clamped on the free frame 202, a clamping pin 215 is fixedly mounted on the clamping block 211, an electromagnet 219 is disposed on the side of the clamping block 211, a clamping groove 216 is disposed on the side of the clamping pin 215, the clamping groove 216 is slidably mounted on a clamping groove slide rod support 220 through a clamping groove slide rod 224, an unlocking push block support 221 is fixedly connected to the clamping groove slide rod support 220, an unlocking push rod support 221 is slidably connected to the unlocking push block support 221, a passive suction block 222 is fixedly connected to the unlocking push rod support 221, an input central gear 204 is fixedly mounted on the input shaft 203, the input shaft 203 is fixedly connected to a knob 207, the rotary frame 202 is fixedly connected to a rotary rod support bracket 209, a slide rod support 213, two clamping rods 213 is mounted on the rotary rod support 213, a reset rod 213 is mounted on the clamping rod support 213, a reset rod 213 is mounted on the panel 201 and a reset rod 213, a groove is formed in the clamping pin 215, the clamping groove sliding rod support 220 is fixedly installed on the sliding rod support 214, a clamping groove sliding rod 224 is fixedly connected with the clamping groove sliding rod support 220, the clamping groove 216 is slidably connected with the clamping groove sliding rod 224, a clamping groove reset spring 225 is fixedly connected between the clamping groove sliding rod support 220 and the opposite face of the clamping groove 216, the clamping groove reset spring 225 surrounds the outer side of the clamping groove sliding rod 224, an unlocking bump 2161 is fixedly arranged on the clamping groove 216, the unlocking bump 2161 is slidably connected with an unlocking pushing block 223, a barb is arranged on the clamping groove 216, a bolt groove 2111 is formed in the clamping block 211, a pulling hanging and locking plate 217 is lapped in the bolt groove 2111, a hand pull ring 218 is fixedly installed on the pulling hanging and locking plate 217, a through hole is formed in one end, far away from the clamping block 211, of the pulling hanging and locking plate 217, the hand ring 218 and the pulling hanging and locking plate 217 are slidably installed on the shell 206, the shell 206 is fixedly installed on the panel 201, the knob 207 is rotatably installed on the shell 206, the input shaft 203 is rotatably connected with the shell 206, and a limiting shifting piece 208 is fixedly installed on the input shaft 203.
The working principle of the load switch used on the fixed switch cabinet disclosed by the invention is as follows: when the arc extinguishing device is used, firstly, the device is installed on a cabinet, then the first contact 103 and the second contact 106 are connected with a power cable, when a circuit is normally switched on and off, the knob 207 is rotated manually, the input shaft 203 is driven to rotate by the rotation of the knob 207, the limiting shifting piece 208 is driven to rotate by the rotation of the input shaft 203, the rotating angle of the limiting shifting piece 208 and the knob 207 is limited due to the limiting strip arranged on the rotating cover 209, the input shaft 203 drives the input central gear 204 to rotate, the input central gear 204 drives the free gear 210 to rotate, the free gear 210 drives the output central gear 205 to rotate, the output central gear 205 rotates to drive the power rod rotating seat 105 to rotate, the power rod rotating seat 105 rotates to drive the power rod 104 to rotate, the first contact 103 and the second contact 106 are switched on by the rotation of the power rod 104, or the first contact 103 and the second contact 106 are switched off, the first contact 103 and the second contact 106 are switched on and off under the condition of a load, the arc extinguishing grid 102 is switched on and switched on the arc extinguishing section, and the arc extinguishing device is switched on the arc.
When a construction operator needs to overhaul a circuit, as shown in fig. 2, the hand ring 218 is pulled, the hand ring 218 drives the pulling padlock plate 217 to move until a through hole formed in the pulling padlock plate 217 moves to the outer side of the housing 206, at this time, a padlock is used to penetrate through the through hole of the pulling padlock plate 217, so that the through hole in the pulling padlock plate 217 stays at the outer side of the housing 206, in the process of moving the pulling padlock plate 217 outwards, the pulling padlock plate 217 drives the clamping block 211 to move together, so that the clamping block 211 is separated from the free frame 202, it is to be noted that the clamping pin 215 also moves together with the clamping block 211, but the clamping pin 215 does not move to a position in contact with the clamping groove 216, at this time, when a person rotates the knob 207, the input central gear 204 is driven to rotate by the input shaft 203, the input central gear 204 drives the free gear 210 to rotate, because the free frame 210 is rotatably installed on the free frame 202, the free frame 202 is rotatably installed on the panel 201, and the output central gear 205 is connected with the live rod seat 105 with a live damping, at this time, the free frame 202 can be rotated by the live working operator, and the safety of the free gear 207 can be ensured that the free frame 202 is rotated by the live working person rotating knob 207 by rotating knob 207.
Besides, a user can control the electromagnet 219 through the remote control unit, the electromagnet 219 is powered on to generate magnetic force, the electromagnet 219 attracts the clamping block 211 to move, the clamping block 211 moves to drive the clamping pin 215 to move, the clamping pin 215 moves to the position of the clamping groove 216, an agnail arranged on the clamping groove 216 enters a groove formed in the clamping pin 215, the clamping pin 215 is clamped on the clamping groove 216 at the moment, the rotary knob 207 cannot drive the power rod rotary seat 105 to rotate at the moment, when unlocking is needed, the magnetic force of the electromagnet 219 is improved, the passive attraction block 222 moves towards the direction of the electromagnet 219, it is noted that, because the distance between the electromagnet 219 and the clamping block 211 is larger than the distance between the electromagnet 219 and the passive attraction block 222, the magnetic force used when the electromagnet 219 is started for the first time cannot drive the passive attraction block 222 to move, therefore when the passive attraction block 222 moves, the unlocking block 223 moves to drive the unlocking block 2161 to press the clamping groove 223 to move, the clamping groove 216 presses the clamping groove 225 to separate the clamping pin 215 from the clamping groove 225, and the clamping block 211 moves again, and the clamping block 211 is separated from the clamping groove 215 by the reset spring, and the clamping spring 225, and the clamping spring can be separated from the clamping spring, and the clamping block 211.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. The utility model provides a load switch who uses on fixed cubical switchboard which characterized in that: the arc extinguishing device comprises an on-off module, wherein the on-off module comprises a ceramic barrel (101), a first contact (103) and a second contact (106) are fixedly installed on the ceramic barrel (101), an electrifying rod rotating seat (105) is rotatably installed in the ceramic barrel (101) through a rotating seat support (107), an electrifying rod (104) is fixedly installed on the electrifying rod rotating seat (105), a rectangular through hole is formed in the ceramic barrel (101), and an arc extinguishing grid (102) is fixedly installed in the through hole;
control module, control module includes panel (201) with ceramic bucket (101) fixed connection, and the free frame (202) of rotating-mounting on panel (201), and the free frame (202) of rotating-mounting has output sun gear (205), and output sun gear (205) and circular telegram pole roating seat (105) fixed connection, and output sun gear (205) side overlap has input sun gear (204), output sun gear (205) and input sun gear (204) all with free gear (210) gear engagement, and free gear (210) rotate and install on free frame (202), and the joint has joint piece (211) on free frame (202), and fixed mounting has joint round pin (215) on joint piece (211), and joint piece (211) side is provided with electro-magnet (219), and the side of joint round pin (215) is provided with joint groove (216), and joint groove (216) pass through joint groove slide bar (224) slidable mounting on joint groove slide bar support (220), and fixedly connected with unblock catch block support (221) on joint groove slide bar support (220), unblock catch block support (221) and slide bar (223) on unblock fixed connection, catch block (223) and install on joint bar (213), joint slide bar (213) fixed mounting is on slide bar support (214), and slide bar support (214) fixed mounting is on panel (201), and it has joint piece reset spring (212) to surround on joint slide bar (213), and the both ends of joint piece reset spring (212) respectively with joint piece (211) and slide bar support (214) fixed connection, electro-magnet (219) fixed mounting is on slide bar support (214), joint round pin (215) and electro-magnet (219) and slide bar support (214) sliding connection, the recess has been seted up on joint round pin (215), joint groove slide bar support (220) fixed mounting is on slide bar support (214), joint groove slide bar (224) and joint groove slide bar support (220) fixed connection, joint groove (216) and joint groove slide bar (224) sliding connection, fixedly connected with joint groove reset spring (225) between the opposite face in joint groove slide bar support (220) and joint groove (216) to joint groove reset spring (225) encircle in the outside of joint groove (224), be provided with unblock lug (2161) on fixed mounting of joint groove (216), unblock groove (2161) and joint groove (216) is provided with unblock lug (2161).
2. A load switch for a stationary switchgear cabinet, as claimed in claim 1, wherein: input shaft (203) is fixedly mounted on input sun gear (204), input shaft (203) and knob (207) fixed connection, free frame (202) with rotate cover (209) and rotate and be connected, rotate cover (209) fixed mounting on panel (201), rotate cover (209) and go up fixed two spacing strips that are provided with.
3. A load switch for a stationary switchgear cabinet, according to claim 2, wherein: seted up bolt groove (2111) on joint piece (211), the overlap joint has pulling padlock board (217) in bolt groove (2111), and fixed mounting has hand power ring (218) on pulling padlock board (217), and the one end of keeping away from joint piece (211) on pulling padlock board (217) has seted up the through-hole, hand power ring (218) and pulling padlock board (217) slidable mounting are on shell (206).
4. A load switch for a stationary switchgear cabinet, according to claim 3, wherein: the shell (206) is fixedly installed on the panel (201), the knob (207) is rotatably installed on the shell (206), the input shaft (203) is rotatably connected with the shell (206), and the input shaft (203) is fixedly provided with a limiting shifting piece (208).
CN202211430668.0A 2022-11-16 2022-11-16 Load switch for fixed switch cabinet Active CN115513002B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211430668.0A CN115513002B (en) 2022-11-16 2022-11-16 Load switch for fixed switch cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211430668.0A CN115513002B (en) 2022-11-16 2022-11-16 Load switch for fixed switch cabinet

Publications (2)

Publication Number Publication Date
CN115513002A CN115513002A (en) 2022-12-23
CN115513002B true CN115513002B (en) 2023-02-28

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CN202211430668.0A Active CN115513002B (en) 2022-11-16 2022-11-16 Load switch for fixed switch cabinet

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205863065U (en) * 2016-06-23 2017-01-04 常熟开关制造有限公司(原常熟开关厂） A kind of moving contact component of rotary switch
CN207690677U (en) * 2017-12-23 2018-08-03 无锡凯绎科技有限公司 Electricity grasps manual padlock and the general interlock of mechanical interlocking
CN212063034U (en) * 2020-04-10 2020-12-01 福建友鸿实业有限公司 Switch cabinet capable of preventing accidental touch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205863065U (en) * 2016-06-23 2017-01-04 常熟开关制造有限公司(原常熟开关厂） A kind of moving contact component of rotary switch
CN207690677U (en) * 2017-12-23 2018-08-03 无锡凯绎科技有限公司 Electricity grasps manual padlock and the general interlock of mechanical interlocking
CN212063034U (en) * 2020-04-10 2020-12-01 福建友鸿实业有限公司 Switch cabinet capable of preventing accidental touch

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