CN109958337B - Explosion-proof latch mechanism and switch cabinet - Google Patents
Explosion-proof latch mechanism and switch cabinet Download PDFInfo
- Publication number
- CN109958337B CN109958337B CN201910282200.3A CN201910282200A CN109958337B CN 109958337 B CN109958337 B CN 109958337B CN 201910282200 A CN201910282200 A CN 201910282200A CN 109958337 B CN109958337 B CN 109958337B
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- Prior art keywords
- latch
- door
- lock pin
- lock
- pin
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- 230000007246 mechanism Effects 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 34
- 230000033001 locomotion Effects 0.000 claims description 19
- 238000004880 explosion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B3/00—Fastening knobs or handles to lock or latch parts
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/02—Locks or fastenings for special use for thin, hollow, or thin-metal wings
- E05B65/025—Locks or fastenings for special use for thin, hollow, or thin-metal wings for lockers
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/06—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with three or more sliding bars
- E05C9/063—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with three or more sliding bars extending along three or more sides of the wing or frame
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/18—Details of fastening means or of fixed retaining means for the ends of bars
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/24—Means for transmitting movements between vertical and horizontal sliding bars, rods or cables for the fastening of wings, e.g. corner guides
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/38—Hinged covers or doors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to an explosion-proof latch mechanism and a switch cabinet, comprising a group of cabinet body components arranged on a cabinet body of the switch cabinet and a group of cabinet door components arranged on a cabinet door, wherein the cabinet body components and the cabinet door components are matched to lock or unlock the cabinet door of the switch cabinet, the cabinet body components comprise a lock pin locking block and a hook locking block, and the lock pin locking block and the hook locking block are fixedly arranged on the cabinet body; the cabinet door assembly comprises a latch, a lock pin, a pin locking block, a conversion structure, a transverse push rod, a latch fixing plate, a latch, a slide bar guide plate provided with a guide hole, a latch locking block and a slide bar penetrating through the guide hole; the handle of the lock is rotated to enable the lock tongue of the latch to move up and down in the vertical direction, the lock pin and the conversion structure are pushed, finally, the latch is pushed to move horizontally, the latch is horizontally inserted into a latch hole formed by matching the latch locking piece and the latch hooking piece, the door of the switch cabinet is locked in the horizontal direction, the door of the switch cabinet is locked, the handle of the door lock is flexible to rotate, the operating force of the mechanism is small, the operation is simple, the use is convenient, and the explosion-proof performance is reliable.
Description
Technical Field
The invention relates to the technical field of explosion prevention when an arc fault occurs in a switch cabinet, in particular to an explosion-proof latch mechanism and the switch cabinet.
Background
When an arc short circuit fault occurs in a general switch cabinet, strong arc current can instantaneously generate high temperature and high heat to heat objects around the fault point, so that metal objects around the fault point are melted, combustible objects are burned, and air is heated and rapidly expands to form explosion. If the switch cabinet door has no explosion-proof measure, the switch cabinet door can be instantaneously exploded when a fault occurs, so that the operation in front of the switch cabinet door and the safety of inspection staff are seriously threatened and injured. In order to ensure the safety of operation and inspection personnel, the switch cabinet door is required to have an explosion-proof function, and the periphery of the switch cabinet door is required to be tightly connected and fixed with the switch cabinet body, so that the switch cabinet door is reliable and explosion-proof. At present, the explosion-proof method and measure adopted on the switch cabinet door are that a plurality of bolt type door locks are used on the door, so that bolts on the cabinet door are screwed into nuts on the cabinet body, the cabinet door and the cabinet body are fastened, and when the door is opened, the bolts are required to be screwed out one by using special keys to open the cabinet door, so that the operation is complex and the use is very inconvenient.
Disclosure of Invention
The invention aims to overcome the defects of the background technology, and provides the explosion-proof latch mechanism of the switch cabinet with the explosion-proof function, which is simple to operate, convenient to use and explosion-proof and reliable. The technical scheme of the invention is as follows:
The utility model provides an explosion-proof latch mechanism, includes a set of cabinet body subassembly of installing on the cubical switchboard cabinet body and installs a set of cabinet door subassembly on the cubical switchboard cabinet door, a set of cabinet body subassembly and a set of cabinet door subassembly cooperation lock or open the cubical switchboard cabinet door, its characterized in that: the group of cabinet body components comprise a lock pin locking piece provided with a first connecting structure and a first pin hole, and also comprise a hook latch locking piece provided with a second connecting structure and a hook body, wherein the lock pin locking piece and the hook latch locking piece are fixedly arranged on the cabinet body through the connecting structure;
The cabinet door assembly comprises a latch provided with a lock handle and a lock tongue, a lock pin, a pin locking block provided with a second pin hole, a conversion structure, a transverse pushing rod, a latch fixing plate, a latch, a slide bar guide plate provided with a guide hole, and a latch locking block penetrating through the slide bar of the guide hole;
one end of the latch, the pin locking block and the conversion structure are fixed on a first door edge of the cabinet door, the other end of the conversion structure and the latch locking block are fixed on a second door edge of the cabinet door, and the first door edge is adjacent to the second door edge;
The lock handle is connected with one end of the lock tongue, the other end of the lock tongue is connected with one end of the lock pin, the other end of the lock pin is suspended, one end of the lock pin is also connected with one end of the conversion structure, the other end of the conversion structure is connected with one end of the transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a cabinet door of the switch cabinet or the latch locking block;
Rotating the lock handle to enable the lock tongue of the latch to move up and down in the vertical direction, pushing the lock pin and the conversion structure, enabling the lock pin to be inserted into a second pin hole of a pin locking block on the cabinet door and a first pin hole of a lock pin locking block on the cabinet body, and pinning the cabinet door and the cabinet body; meanwhile, the conversion structure is pushed to transfer the movement of the lock tongue to convert the movement direction of the lock tongue into a horizontal movement direction, the conversion structure is fixedly connected with the transverse push rod, the transverse push rod is fixedly connected with the door latch fixing plate, the door latch fixing plate is fixedly connected with the door latch, and finally the door latch is pushed to be changed into horizontal movement, so that the door latch is horizontally inserted into a door latch hole formed by matching the door latch locking block and the hook locking block, and the door of the switch cabinet is locked in the horizontal direction.
Preferably, the door lock further comprises a lock pin push plate, a first lock pin installation seat of the lock pin push plate and a second lock pin installation seat of the lock pin push plate, wherein the lock pin, the lock pin locking block and the lock pin locking block are two, the lock pin and the lock pin locking block are sequentially installed on the first door edge of the door, and the lock pin locking block is installed at a matched position of the switch cabinet body and is respectively a first lock pin, a first lock pin locking block and a first lock pin locking block, and a second lock pin, a second lock pin locking block and a second lock pin locking block; one end of the lock pin push plate is connected with the other end of the lock tongue and also connected with the first lock pin installation seat of the lock pin push plate, the first lock pin installation seat of the lock pin push plate is connected with one end of the first lock pin, and the other end of the first lock pin is suspended and can be inserted into the second pin hole of the first pin locking block and the first pin hole of the first lock pin locking block; the other end of the lock pin push plate is connected with a second lock pin installation seat of the lock pin push plate, the second lock pin installation seat of the lock pin push plate is connected with one end of a second lock pin, the other end of the second lock pin is suspended and can be inserted into a second pin hole of a second pin locking block and a first pin hole of the second pin locking block, the second lock pin installation seat of the lock pin push plate is also connected with one end of a conversion structure, the other end of the conversion structure is connected with one end of a transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of a latch fixing plate, the middle part of the latch fixing plate is connected with a latch, the lower part of the latch fixing plate is connected with a slide bar, the slide bar passes through a guide hole of a slide bar guide plate, and the slide bar guide plate is fixed on a cabinet door of a switch cabinet or the latch locking block.
Preferably, the number of the latch fixing plate, the latch, the slide bar guide plate, the slide bar, the latch locking piece and the latch locking piece is two, the latch fixing plate, the latch, the slide bar guide plate, the slide bar and the latch locking piece are sequentially arranged on the second door edge of the cabinet door, the second door edge is adjacent to the first door edge, and the latch locking piece is arranged at a matched position of the cabinet body of the switch cabinet; the first latch fixing plate, the first latch, the first slide bar guide plate, the first slide bar, the first latch block and the first hook latch block are respectively arranged, and the second latch fixing plate, the second latch, the second slide bar guide plate, the second slide bar, the second latch block and the second hook latch block are respectively arranged; the other end of the transverse push rod is connected with the upper part of the first latch fixing plate, the middle part of the first latch fixing plate is connected with the first latch, the lower part of the first latch fixing plate is connected with the first slide rod, the first slide rod passes through a guide hole of the first slide rod guide plate, and the first slide rod guide plate is fixed on the switch cabinet door or the latch locking block; the second slide bar is connected with the first slide bar into a whole, the second slide bar penetrates through a guide hole of the second slide bar guide plate, and the second slide bar guide plate is fixed on the switch cabinet door or the door latch locking piece.
Preferably, the conversion structure comprises a vertical push rod, a triangle rotating shaft and a relay triangle, one end of the lock pin is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle rotating shaft, a third angular position of the relay triangle is connected with one end of the transverse push rod, the other end of the transverse push rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a cabinet door or a latch locking block of the switch cabinet;
The lock handle rotates to drive the lock tongue to move up and down, the lock tongue drives the lock pin to move up and down, the vertical push rod is also driven to move along an inclined direction inclined to the horizontal direction, the vertical push rod drives the relay triangle to swing along a triangle rotating shaft, the relay triangle drives the transverse push rod to move left and right along the horizontal direction, the transverse push rod drives the latch fixing plate and the latch to move left and right along the horizontal direction, and the slide rod is also driven to move left and right along the horizontal direction along a guide hole of the slide rod guide plate;
The pin locking block is correspondingly matched with the position of the lock pin locking block, the first pin hole and the second pin hole are matched to form a lock pin hole for the lock pin to pass through, so that when the switch cabinet body and the switch cabinet door are closed, the lock handle rotates to drive the lock pin to be inserted into the lock pin hole formed by the pin locking block and the lock pin locking block in a matched mode, and the switch cabinet door is locked in the vertical direction; the long side strips of the latch locking piece are fixed (welded) on the cabinet door of the switch cabinet, the hook body is folded with the short side strips of the latch locking piece, and the latch hole formed by matching with the long side strips of the latch locking piece is used for the latch to pass through, so that when the cabinet body and the cabinet door of the switch cabinet are closed, the latch handle is rotated to drive the latch to be inserted into the latch hole (notch) formed by the latch locking piece and the hook locking piece, and the cabinet door of the switch cabinet is locked in the horizontal direction. The locking force is doubled, and the explosion-proof purpose is achieved.
Preferably, the switching structure comprises a vertical push rod, a triangle rotating shaft and a relay triangle, the second lock pin installation seat of the lock pin push plate is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with the first angular position of the relay triangle, the second angular position of the relay triangle is connected with the triangle rotating shaft, the third angular position of the relay triangle is connected with one end of the transverse push rod, the other end of the transverse push rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod penetrates through the guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a cabinet door of the switch cabinet or on the latch locking block.
Preferably, the cabinet body components and the cabinet door components are two groups, the two groups of cabinet body components and the cabinet door components are symmetrically arranged on the cabinet body and the cabinet door by taking a horizontal line passing through the installation position of the lock handle as a central line, and the lock handle rotates and drives the lock tongue in the two groups of cabinet door components to move up and down in opposite directions.
The invention also provides an explosion-proof latch switch cabinet, which comprises a switch cabinet body and a cabinet door, wherein the switch cabinet body and the cabinet door are connected through a hinge, and the explosion-proof latch switch cabinet is characterized by further comprising any one of the explosion-proof latch mechanisms arranged on the switch cabinet body and the cabinet door.
According to the explosion-proof door latch mechanism and the switch cabinet, the explosion-proof function of the switch cabinet door is achieved through the hinge of the third door edge of the switch cabinet and the lock pin in the explosion-proof door latch mechanism, the lock pin lock block, the door latch lock block and the hook lock block. The invention has the advantages that: the door latch is adopted, the door lock handle arranged on the cabinet door is rotated, so that the lock tongue opens to push the push plate, the push rod and other transmission parts, the lock pin and the latch are pushed, the locking of the switch cabinet door is realized, the door lock handle is rotated flexibly, the mechanism operating force is small, the operation is simple, the use is very convenient, and the explosion-proof performance is reliable.
Drawings
FIG. 1 is a schematic view showing the mounting state of a door assembly of an explosion proof door latch mechanism according to embodiment 5 of the present invention;
FIG. 2 is a schematic view of the switch cabinet door of example 5 with a pin lock block, a triangle shaft and a latch lock block welded thereon;
FIG. 3a is a schematic view of a pin block;
FIG. 3b is a schematic view of the A-direction pin block of FIG. 3 a;
FIG. 3c is a schematic view of the B-direction pin block of FIG. 3 a;
FIG. 4a is a schematic view of the latch block structure;
FIG. 4b is a schematic view of the C-directed door latch block of FIG. 4 a;
FIG. 4c is a schematic view of the D-latch block of FIG. 4 a;
FIG. 5a is a schematic diagram of a latch block structure;
FIG. 5b is a schematic view of the structure of the E-hook latch block of FIG. 5 a;
FIG. 5c is a schematic view of the F-hook latch block of FIG. 5 a;
FIG. 6a is a schematic view of the structure of the locking pin block;
FIG. 6b is a schematic view of the G-direction lock pin block of FIG. 6 a;
FIG. 6c is a schematic view of the H-direction lock pin block of FIG. 6 a;
FIG. 7 is a partial schematic view of a switch cabinet door closed and locked with a switch cabinet body;
FIG. 8 is a J-view of FIG. 1;
fig. 9 is a schematic diagram showing the lock handle of embodiment 5 rotating and simultaneously driving the lock bolts of two sets of cabinet door assemblies to move up and down.
Wherein 1-latch, 20-latch, 201-gear, 202-rack, 2-latch, 21-first latch, 22-second latch, 17-lock handle, 3-pin lock block, 31-first pin lock block, 32-second pin lock block, 301-second pin hole (through hole), 302-first connection structure, 4-latch push plate, 51-latch push plate first latch mount, 52-latch push plate second latch mount, 6-vertical push rod, 7-triangle rotation shaft, 8-relay triangle, 81-first angle position, 82-second angle position, 83-third angle position, 9-horizontal push rod, 10-latch fixing plate, 101-first latch fixing plate, 102-second latch plate, 11-latch, 111-first latch, 112-second latch, 12-slide bar guide, 121-first slide bar guide, 122-second slide bar guide, 123-guide, 13-latch block, 131 a-first latch block, 132 b-second latch block, 131-long side bar, 132-short side bar, 130-latch hole, 14-slide bar, 141-first slide bar, 142-second slide bar, 15-cabinet door, 16-hinge, 18-latch block, 181-first pin hole (through hole), 182-latch block connection (bolt-and-nut connection in the figure), 19-hook latch block, 191-first hook latch block, 192-second hook latch block, 193-second connection structure, 194-hook body, 30-latch pin hole, 111-first door edge, 112-second door edge, 113-third door edge.
Detailed Description
The invention is further described below with reference to examples.
Example 1
The explosion-proof latch mechanism comprises a group of cabinet body components and a group of cabinet door components, wherein the group of cabinet body components are installed and fixed on a cabinet body of a switch cabinet, the group of cabinet body components and the group of cabinet door components are matched to lock or unlock the cabinet door of the switch cabinet, the group of cabinet body components comprise a lock pin locking block provided with a first connecting structure and a first pin hole, the first connecting structure in the embodiment is a bolt and nut and a bolt and nut first installation through hole matched with the bolt and nut, and the first connecting structure in the other embodiment can be welded; the device further comprises a hooking latch block provided with a second connecting structure and a hooking body, wherein the second connecting structure in the embodiment is a bolt and nut and a second installation through hole matched with the bolt and nut, and the second connecting structure in the other embodiment can be welded; the lock pin locking block is fixedly arranged on the cabinet body through a first connecting structure, and the hooking locking block is fixedly arranged on the cabinet body through a second connecting structure;
the cabinet door assembly comprises a latch provided with a lock handle and a lock tongue, a lock pin, a pin locking block provided with a second pin hole, a conversion structure, a transverse pushing rod, a latch fixing plate, a latch, a slide bar guide plate provided with a guide hole, and a latch locking block penetrating through the slide bar of the guide hole; in this embodiment, the lock handle rotates 90 ° to drive the latch mechanism to travel half a stroke, so that the door can be locked, and then rotates 90 °, and the mechanism travels half a stroke again, and rotates 180 ° to complete the locking work, and usually rotates 180 ° once to complete the locking work.
The latch, the pin locking block and one end of the conversion structure are welded (in another embodiment, the pin locking block can be connected through bolts and nuts) and fixed on a first door edge of the cabinet door, the other end of the conversion structure and the latch locking block are welded (in another embodiment, the pin locking block can be connected through bolts and nuts) and fixed on a second door edge, and the second door edge is adjacent to the first door edge; the pin locking block is U-shaped, two coaxial second pin holes (through holes) are formed in two sides (two wings) of the U-shaped, the pin locking block is correspondingly matched with the position of the pin locking block, the first pin holes and the second pin holes are matched to form pin holes for the pins to pass through, so that when the switch cabinet door is closed, the lock handle rotates to drive the pins to be inserted into the pin holes formed by the pin locking block and the pin locking block in a matched mode, and the switch cabinet door is locked in the vertical direction; the door latch block is a cuboid, a long side bar and a short side bar are formed by slotting, the long side bar is fixed (welded) on a cabinet door (in another embodiment, the long side bar can be connected by bolts and nuts), the door latch block is provided with through holes for installing the bolts and nuts, and the positions of the door latch block and the hook latch block are correspondingly matched, so that when the cabinet door of the switch cabinet is closed, the hook body of the door latch block is folded with the short side bar, and a door latch hole formed by matching the long side bar of the door latch block is used for the door latch to be inserted into, and the cabinet door of the switch cabinet is locked in the horizontal direction.
The lock handle is connected with one end of the lock tongue, the other end of the lock tongue is connected with one end of the lock pin, the other end of the lock pin is suspended, one end of the lock pin is also connected with one end of the conversion structure, the other end of the conversion structure is connected with one end of the transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the sliding rod, the sliding rod passes through a guide hole (the shape of the guide hole is consistent with the cross section of the sliding rod, in the embodiment, the sliding rod is rectangular, in the other embodiment, the cross section of the corresponding sliding rod is also circular), and the sliding rod guide plate is fixed on a cabinet door of the switch cabinet or a latch block;
Rotating the lock handle to enable the lock tongue of the latch to move up and down in the vertical direction, pushing the lock pin and the conversion structure, enabling the lock pin to be inserted into a second pin hole of a pin locking block on the cabinet door and a first pin hole of a lock pin locking block on the cabinet body, and pinning the cabinet door and the cabinet body; meanwhile, the conversion structure is pushed to transfer the movement of the lock tongue to convert the movement direction (vertical direction in the embodiment) into the horizontal movement direction, the conversion structure is fixedly connected with the transverse push rod, the transverse push rod is fixedly connected with the latch fixing plate, the latch fixing plate is fixedly connected with the latch, and finally the latch is pushed to change into horizontal movement.
In this embodiment, the conversion structure includes a vertical push rod, a triangle rotating shaft, a relay triangle, one end of the lock pin is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle rotating shaft, a third angular position of the relay triangle is connected with one end of the horizontal push rod, the other end of the horizontal push rod is connected with an upper portion of the latch fixing plate, a middle portion of the latch fixing plate is connected with the latch, a lower portion of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole (the shape of the guide hole is consistent with the cross section of the slide rod, in this embodiment, the slide rod is rectangular), and in another embodiment, the corresponding slide rod is also circular in cross section), and the slide rod is fixed on the door of the switch cabinet or the latch block;
The lock handle rotates to drive the lock tongue to move up and down, the lock tongue drives the lock pin to move up and down, and also drives the vertical push rod to move along the inclined direction inclined to the horizontal direction, the vertical push rod drives the relay triangle to swing along the triangle rotating shaft, the relay triangle drives the transverse push rod to move left and right along the horizontal direction, the transverse push rod drives the latch fixing plate and the latch to move left and right along the horizontal direction, and also drives the slide rod to move left and right along the horizontal direction along the guide hole of the slide rod guide plate.
The pin locking block is correspondingly matched with the position of the lock pin locking block, the first pin hole and the second pin hole are matched to form a lock pin hole for the lock pin to pass through, so that when the switch cabinet body and the switch cabinet door are closed, the lock handle rotates to drive the lock pin to be inserted into the lock pin hole formed by the pin locking block and the lock pin locking block in a matched mode, and the switch cabinet door is locked in the vertical direction; the door latch block is corresponding to the position where the hook latch block is located, the hook body is folded with the short side bar of the door latch block, and a door latch hole formed by matching with the long side bar of the door latch block is used for the door latch to pass through, so that when the switch cabinet body and the switch cabinet door are closed, the lock handle rotates to drive the door latch to be inserted into the door latch hole formed by the door latch block and the hook latch block, and the switch cabinet door is locked in the horizontal direction. Thus, the locking force is doubled, and the explosion-proof purpose is achieved.
FIG. 3a is a schematic view of a pin block; FIG. 3b is a schematic view of the A-direction pin block of FIG. 3 a; FIG. 3c is a schematic view of the B-direction pin block of FIG. 3 a; FIG. 4a is a schematic view of the latch block structure; FIG. 4b is a schematic view of the C-directed door latch block of FIG. 4 a; FIG. 4c is a schematic view of the D-latch block of FIG. 4 a; FIG. 5a is a schematic diagram of a latch block structure; FIG. 5b is a schematic view of the structure of the E-hook latch block of FIG. 5 a; FIG. 5c is a schematic view of the F-hook latch block of FIG. 5 a; FIG. 6a is a schematic view of the structure of the locking pin block; FIG. 6b is a schematic view of the G-direction lock pin block of FIG. 6 a; fig. 6c is a schematic view of the H-direction lock pin block of fig. 6 a.
Example 2
The embodiment 1 is different in that the explosion-proof door latch mechanism further comprises a lock pin push plate, a lock pin push plate first lock pin installation seat and a lock pin push plate second lock pin installation seat, wherein the number of lock pins, the number of lock pin locking blocks and the number of lock pin locking blocks are two, the lock pins and the number of lock pin locking blocks are all sequentially installed on the first door edge of the cabinet door, and the lock pin locking blocks are installed at matched positions of the cabinet body of the switch cabinet and are respectively a first lock pin, a first lock pin locking block and a first lock pin locking block, and a second lock pin, a second lock pin locking block and a second lock pin locking block; one end of the lock pin push plate is connected with the other end of the lock tongue and also connected with the first lock pin installation seat of the lock pin push plate, the first lock pin installation seat of the lock pin push plate is connected with one end of the first lock pin, and the other end of the first lock pin is suspended and can be inserted into the second pin hole of the first pin locking block and the first pin hole of the first lock pin locking block; the other end of the lock pin push plate is connected with a second lock pin installation seat of the lock pin push plate, the second lock pin installation seat of the lock pin push plate is connected with one end of a second lock pin, the other end of the second lock pin is suspended and can be inserted into a second pin hole of a second pin locking block and a first pin hole of the second pin locking block, the second lock pin installation seat of the lock pin push plate is also connected with one end of a conversion structure, the other end of the conversion structure is connected with one end of a transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of a latch fixing plate, the middle part of the latch fixing plate is connected with a latch, the lower part of the latch fixing plate is connected with a slide bar, the slide bar passes through a guide hole of a slide bar guide plate, and the slide bar guide plate is fixed on a cabinet door of a switch cabinet or the latch locking block.
The remainder was the same as in example 1.
Example 3
The embodiment 1 is different in that the number of the latch fixing plate, the latch, the slide bar guide plate, the slide bar, the latch locking piece and the hook locking piece is two, the latch fixing plate, the latch, the slide bar guide plate, the slide bar and the latch locking piece are sequentially arranged on the second door edge of the cabinet door, the second door edge is adjacent to the first door edge, and the hook locking piece is arranged on a matched position of the cabinet body of the switch cabinet; the first latch fixing plate, the first latch, the first slide bar guide plate, the first slide bar, the first latch block and the first hook latch block are respectively arranged, and the second latch fixing plate, the second latch, the second slide bar guide plate, the second slide bar, the second latch block and the second hook latch block are respectively arranged; the other end of the transverse push rod is connected with the upper part of the first latch fixing plate, the middle part of the first latch fixing plate is connected with the first latch, the lower part of the first latch fixing plate is connected with the first slide rod, the first slide rod passes through a guide hole of the first slide rod guide plate, and the first slide rod guide plate is fixed on the switch cabinet door or the latch locking block; the second slide bar is connected with the first slide bar into a whole, the second slide bar penetrates through a guide hole of the second slide bar guide plate, and the second slide bar guide plate is fixed on the switch cabinet door or the door latch locking piece.
The remainder was the same as in example 1.
Example 4
The embodiment 1 is different in that the conversion structure includes a vertical push rod, a triangle shaft, a relay triangle, one end of the lock pin is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle shaft, a third angular position of the relay triangle is connected with one end of the horizontal push rod, the other end of the horizontal push rod is connected with an upper portion of the latch fixing plate, a middle portion of the latch fixing plate is connected with the latch, a lower portion of the latch fixing plate is connected with the slide bar, the slide bar passes through a guide hole of the slide bar guide plate, and the slide bar guide plate is fixed on a cabinet door or on the latch locking block.
The remainder was the same as in example 1.
Example 5
Fig. 1 is a schematic view showing the installation state of a cabinet door assembly of an explosion-proof door latch mechanism according to embodiment 5 of the present invention, and fig. 2 is a schematic view showing a door lock block, a triangle shaft and a door lock block welded to a switch cabinet door.
The utility model provides an explosion-proof latch mechanism, cabinet body subassembly and cabinet door subassembly are two sets of, two sets of cabinet body subassemblies and cabinet door subassembly take pass through lock handle mounted position's horizontal line is the central line, the symmetry install in on the cabinet body and the cabinet door, lock handle rotation drives simultaneously in two sets of cabinet door subassemblies the spring bolt reciprocates in opposite directions, specifically, lock handle is equipped with the rotation axis, the lock still is equipped with a gear and two parallel racks, the rotation axis with gear connection, gear both sides and two parallel racks meshing, two racks are respectively opposite one end and spring bolt connection, the gear round trip rotation drives two racks make straight line round trip telescopic motion to drive two spring bolts round trip telescopic opposite directions.
The cabinet body assembly and the cabinet door assembly are matched to lock or unlock the cabinet door of the switch cabinet, the cabinet body assembly comprises a lock pin locking block provided with a first connecting structure and a first pin hole and a hook latch locking block provided with a second connecting structure and a hook body, and the lock pin locking block and the hook latch locking block are fixedly arranged (welded) on the cabinet body through the connecting structure; the first connection structure and the second connection structure are welded structures.
The cabinet door assembly comprises a latch provided with a lock handle and a lock tongue, a lock pin, a pin locking block provided with a second pin hole, a conversion structure, a transverse pushing rod, a latch fixing plate, a latch, a slide bar guide plate provided with a guide hole, and a latch locking block penetrating through the slide bar of the guide hole; in this embodiment, the lock handle rotates 90 ° to drive the latch mechanism to travel half a stroke, so that the door can be locked, and then rotates 90 °, and the mechanism travels half a stroke again, and rotates 180 ° to complete the locking work, and usually rotates 180 ° once to complete the locking work.
The latch, the pin locking block and one end of the conversion structure are welded and fixed on a first door edge of the cabinet door, the other end of the conversion structure and the latch locking block are welded and fixed on a second door edge, and the second door edge is adjacent to the first door edge; the pin locking block is U-shaped, two coaxial second pin holes (through holes) are formed in two sides (two wings) of the U-shaped, the pin locking block is correspondingly matched with the position of the pin locking block, the first pin holes and the second pin holes are matched to form pin holes for the pins to pass through, so that when the switch cabinet door is closed, the lock handle rotates to drive the pins to be inserted into the pin holes formed by the pin locking block and the pin locking block in a matched mode, and the switch cabinet door is locked in the vertical direction; the door latch block is cuboid, a long side strip and a short side strip are formed by slotting, the long side strip is fixed (welded) on the cabinet door, and the positions of the door latch block and the hook latch block are correspondingly matched, so that when the cabinet door of the switch cabinet is closed, the hook body and the short side strip of the door latch block are folded, and a door latch hole formed by matching with the long side strip of the door latch block is used for inserting the door latch into the door latch hole, and the cabinet door of the switch cabinet is locked in the horizontal direction.
The lock handle is connected with one end of the lock tongue, the other end of the lock tongue is connected with one end of the lock pin, the other end of the lock pin is suspended, one end of the lock pin is also connected with one end of the conversion structure, the other end of the conversion structure is connected with one end of the transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a cabinet door of the switch cabinet or the latch locking block;
Rotating the lock handle to enable the lock tongue of the latch to move up and down in the vertical direction, pushing the lock pin and the conversion structure, enabling the lock pin to be inserted into a second pin hole of a pin locking block on the cabinet door and a first pin hole of a lock pin locking block on the cabinet body, and pinning the cabinet door and the cabinet body; meanwhile, the conversion structure is pushed to transfer the movement of the lock tongue to convert the movement direction (vertical direction in the embodiment) into the horizontal movement direction, the conversion structure is fixedly connected with the transverse push rod, the transverse push rod is fixedly connected with the latch fixing plate, the latch fixing plate is fixedly connected with the latch, and finally the latch is pushed to change into horizontal movement.
The explosion-proof door latch mechanism further comprises a lock pin push plate, a lock pin push plate first lock pin installation seat and a lock pin push plate second lock pin installation seat, wherein the number of lock pins, the number of lock pin locking blocks and the number of lock pin locking blocks are two, the lock pins and the number of lock pin locking blocks are all sequentially installed on the first door edge of the cabinet door, and the lock pin locking blocks are installed at matched positions of the switch cabinet body and are respectively a first lock pin, a first lock pin locking block and a first lock pin locking block, and a second lock pin, a second lock pin locking block and a second lock pin locking block; one end of the lock pin push plate is connected with the other end of the lock tongue and also connected with the first lock pin installation seat of the lock pin push plate, the first lock pin installation seat of the lock pin push plate is connected with one end of the first lock pin, and the other end of the first lock pin is suspended and can be inserted into the second pin hole of the first pin locking block and the first pin hole of the first lock pin locking block; the other end of the lock pin push plate is connected with a second lock pin installation seat of the lock pin push plate, the second lock pin installation seat of the lock pin push plate is connected with one end of a second lock pin, the other end of the second lock pin is suspended and can be inserted into a second pin hole of a second pin locking block and a first pin hole of the second lock pin locking block, the second lock pin installation seat of the lock pin push plate is also connected with one end of the conversion structure, and the other end of the conversion structure is connected with one end of the transverse pushing rod; in this embodiment, the conversion structure includes a vertical push rod, a triangle rotating shaft, a relay triangle, the second lock pin mounting seat of the lock pin push plate is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle rotating shaft, a third angular position of the relay triangle is connected with one end of the horizontal push rod, the other end of the horizontal push rod is connected with the upper portion of the latch fixing plate, the middle portion of the latch fixing plate is connected with the latch, the lower portion of the latch fixing plate is connected with the slide bar, the slide bar passes through a guide hole of the slide bar guide plate, and the slide bar guide plate is fixed on a cabinet door of the switch cabinet or on the latch locking block.
Specifically, in this embodiment, the number of the latch fixing plate, the latch, the slide bar guide plate, the slide bar, the latch locking piece and the hook latch locking piece is two, the latch fixing plate, the latch, the slide bar guide plate, the slide bar and the latch locking piece are all sequentially installed on the second door edge of the cabinet door, the second door edge is adjacent to the first door edge, and the hook latch locking piece is installed on the matched position of the cabinet body of the switch cabinet; the first latch fixing plate, the first latch, the first slide bar guide plate, the first slide bar, the first latch block and the first hook latch block are respectively arranged, and the second latch fixing plate, the second latch, the second slide bar guide plate, the second slide bar, the second latch block and the second hook latch block are respectively arranged; the other end of the transverse push rod is connected with the upper part of the first latch fixing plate, the middle part of the first latch fixing plate is connected with the first latch, the lower part of the first latch fixing plate is connected with the first slide rod, the first slide rod passes through a guide hole of the first slide rod guide plate, and the first slide rod guide plate is fixed on the switch cabinet door or the latch locking block; the second slide bar is connected with the first slide bar into a whole, the second slide bar penetrates through a guide hole of the second slide bar guide plate, and the second slide bar guide plate is fixed on the switch cabinet door or the door latch locking piece.
Example 6
An explosion proof door latch switch cabinet comprising a switch cabinet body and a cabinet door with a third door edge connected by four hinges, and further comprising the explosion proof door latch mechanism described in embodiment 5 mounted on the switch cabinet body and the cabinet door.
As shown in fig. 7, the cabinet door of the switch cabinet is closed and partially schematic in locking structure with the cabinet body. An explosion-proof latch switch cabinet corresponding to the explosion-proof latch mechanism of embodiment 5, wherein when a switch cabinet door is in a closed state, latch lock blocks (a first latch lock block and a second latch lock block) and hook lock blocks (a first hook lock block and a second hook lock block) mounted on a switch cabinet body are respectively inserted into latch holes (notches) of pin lock blocks (a first pin lock block and a second pin lock block) and latch lock blocks (a first latch lock block and a second latch lock block) on the cabinet door; rotating a lock handle to enable a lock tongue of a latch to move up and down in the vertical direction to push a lock pin push plate, wherein a lock pin (a first lock pin and a second lock pin), a lock pin push plate second lock pin installation seat and a lock pin push plate second lock pin installation seat are arranged on the lock pin push plate, so that the lock pin is inserted into a lock pin locking block on a cabinet door and a lock pin hole on a lock pin locking block on a cabinet body, and the cabinet door and the cabinet body are locked; meanwhile, a second lock pin mounting seat of the lock pin push plate on the lock pin push plate pushes a vertical push rod, the vertical push rod pushes a relay triangle through a triangle rotating shaft to change the movement direction, and then pushes a transverse push rod, so that the vertical movement of a lock tongue of the latch is transmitted to the vertical push rod through the lock pin push plate and then is transmitted to the transverse push rod through the relay triangle to change into horizontal movement; the latch (a first latch and a second latch) are respectively fixed on latch fixing plates (a first latch fixing plate and a second latch fixing plate), a first slide bar and a second slide bar are respectively connected with the two latch fixing plates, and the slide bars (a first slide bar and a second slide bar) respectively move horizontally in guide holes of the slide bar guide plates (a first slide bar guide plate and a second slide bar guide plate); the first latch fixing plate and the second latch fixing plate are pushed when the transverse push rod moves horizontally, the latch is driven to clamp the hook latch pieces (the first hook latch pieces and the second hook latch pieces) on the switch cabinet body in the latch holes (the notches) of the latch pieces (the first latch pieces and the second latch pieces), and accordingly the door of the switch cabinet is closed, and the door is locked with the switch cabinet body. When the door is opened, the actions are opposite.
When the cabinet door of the switch cabinet is in a door opening state, a lock pin locking block and a latch hooking block which are arranged on the cabinet body of the switch cabinet are respectively pulled out from a lock pin locking block and a latch hooking hole (notch) of the lock pin locking block and the latch hooking block on the cabinet door; the operation is reversed by rotating the lock handle in the opposite direction.
Claims (2)
1. The utility model provides an explosion-proof latch switch cabinet, includes the switch cabinet body and the cabinet door of hinged joint for the third door limit, its characterized in that still includes the explosion-proof latch mechanism of installing on switch cabinet body and cabinet door, explosion-proof latch mechanism is including installing a set of cabinet body subassembly on the switch cabinet body and installing a set of cabinet door subassembly on the switch cabinet door, a set of cabinet body subassembly and a set of cabinet door subassembly cooperation locking or opening switch cabinet door, its characterized in that: the group of cabinet body components comprise a lock pin locking piece provided with a first connecting structure and a first pin hole, and also comprise a hook latch locking piece provided with a second connecting structure and a hook body, wherein the lock pin locking piece and the hook latch locking piece are fixedly arranged on the cabinet body through the connecting structure;
The cabinet door assembly comprises a latch provided with a lock handle and a lock tongue, a lock pin, a pin locking block provided with a second pin hole, a conversion structure, a transverse pushing rod, a latch fixing plate, a latch, a slide bar guide plate provided with a guide hole, and a latch locking block penetrating through the slide bar of the guide hole;
One end of the latch, the pin locking block and the conversion structure are fixed on a first door edge of the cabinet door, the other end of the conversion structure and the latch locking block are fixed on a second door edge , of the cabinet door, and the first door edge is adjacent to the second door edge;
The lock handle is connected with one end of the lock tongue, the other end of the lock tongue is connected with one end of the lock pin, the other end of the lock pin is suspended, one end of the lock pin is also connected with one end of the conversion structure, the other end of the conversion structure is connected with one end of the transverse pushing rod, the other end of the transverse pushing rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a cabinet door of the switch cabinet or the latch locking block;
Rotating the lock handle to enable the lock tongue of the latch to move up and down in the vertical direction, pushing the lock pin and the conversion structure, enabling the lock pin to be inserted into a second pin hole of a pin locking block on the cabinet door and a first pin hole of a lock pin locking block on the cabinet body, and pinning the cabinet door and the cabinet body; meanwhile, the push conversion structure transmits the motion of the lock tongue to convert the motion direction of the lock tongue into a horizontal motion direction, the conversion structure is fixedly connected with the transverse push rod, the transverse push rod is fixedly connected with the latch fixing plate, the latch fixing plate is fixedly connected with the latch, and finally the latch is pushed to move horizontally, so that the latch is horizontally inserted into a latch hole formed by matching the latch locking block and the latch hooking block, and the cabinet door of the switch cabinet is locked in the horizontal direction;
The lock pin and the pin locking block are sequentially arranged on the first door edge of the cabinet door, and the lock pin locking block is arranged at a matched position of the switch cabinet body and is respectively a first lock pin, a first pin locking block and a first lock pin locking block, and a second lock pin, a second pin locking block and a second lock pin locking block; one end of the lock pin push plate is connected with the other end of the lock tongue and also connected with the first lock pin installation seat of the lock pin push plate, the first lock pin installation seat of the lock pin push plate is connected with one end of the first lock pin, and the other end of the first lock pin is suspended and can be inserted into the second pin hole of the first pin locking block and the first pin hole of the first lock pin locking block; the other end of the lock pin push plate is connected with a second lock pin installation seat of the lock pin push plate, the second lock pin installation seat of the lock pin push plate is connected with one end of a second lock pin, the other end of the second lock pin is suspended and can be inserted into a second pin hole of a second pin locking block and a first pin hole of the second pin locking block, the second lock pin installation seat of the lock pin push plate is also connected with one end of a conversion structure, the other end of the conversion structure is connected with one end of a transverse push rod, the other end of the transverse push rod is connected with the upper part of a latch fixing plate, the middle part of the latch fixing plate is connected with a latch, the lower part of the latch fixing plate is connected with a slide bar, the slide bar passes through a guide hole of a slide bar guide plate, and the slide bar guide plate is fixed on a cabinet door of a switch cabinet or the latch locking block;
The door latch fixing plate, the door latch, the slide bar guide plate, the slide bar, the door latch locking piece and the hook latch locking piece are sequentially arranged on a second door edge of the cabinet door, the second door edge is adjacent to the first door edge, and the hook latch locking piece is arranged at a matched position of the cabinet body of the switch cabinet; the first latch fixing plate, the first latch, the first slide bar guide plate, the first slide bar, the first latch block and the first hook latch block are respectively arranged, and the second latch fixing plate, the second latch, the second slide bar guide plate, the second slide bar, the second latch block and the second hook latch block are respectively arranged; the other end of the transverse push rod is connected with the upper part of the first latch fixing plate, the middle part of the first latch fixing plate is connected with the first latch, the lower part of the first latch fixing plate is connected with the first slide rod, the first slide rod passes through a guide hole of the first slide rod guide plate, and the first slide rod guide plate is fixed on the switch cabinet door or the latch locking block; the second slide bar is connected with the first slide bar into a whole, the second slide bar passes through a guide hole of the second slide bar guide plate, and the second slide bar guide plate is fixed on the switch cabinet door or the door latch block;
The switching structure comprises a vertical push rod, a triangle rotating shaft and a relay triangle, one end of the lock pin is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle rotating shaft, a third angular position of the relay triangle is connected with one end of the transverse push rod, the other end of the transverse push rod is connected with the upper part of the latch fixing plate, the middle part of the latch fixing plate is connected with the latch, the lower part of the latch fixing plate is connected with the slide rod, the slide rod passes through a guide hole of the slide rod guide plate, and the slide rod guide plate is fixed on a switch cabinet door or the latch locking block;
The lock handle rotates to drive the lock tongue to move up and down, the lock tongue drives the lock pin to move up and down, the vertical push rod is also driven to move along an inclined direction inclined to the horizontal direction, the vertical push rod drives the relay triangle to swing along a triangle rotating shaft, the relay triangle drives the transverse push rod to move left and right along the horizontal direction, the transverse push rod drives the latch fixing plate and the latch to move left and right along the horizontal direction, and the slide rod is also driven to move left and right along the horizontal direction along a guide hole of the slide rod guide plate;
The pin locking block is correspondingly matched with the position of the lock pin locking block, the first pin hole and the second pin hole are matched to form a lock pin hole for the lock pin to pass through, so that when the switch cabinet body and the switch cabinet door are closed, the lock handle rotates to drive the lock pin to be inserted into the lock pin hole formed by the pin locking block and the lock pin locking block in a matched mode, and the switch cabinet door is locked in the vertical direction; the door latch block is in cuboid shape, the slot forms a long side bar and a short side bar, the long side bar is fixed on the cabinet door, the positions of the door latch block and the hook latch block are correspondingly matched, so that when the cabinet door of the switch cabinet is closed, the hook body of the door latch block is folded with the short side bar, and a door latch hole formed by matching with the long side bar of the door latch block is used for inserting the door latch into the door latch hole, and the cabinet door of the switch cabinet is also locked in the horizontal direction;
the cabinet body components and the cabinet door components are two groups, the two groups of cabinet body components and the cabinet door components are symmetrically arranged on the cabinet body and the cabinet door by taking a horizontal line passing through the installation position of the lock handle as a central line, and the lock handle rotates and drives the lock tongue in the two groups of cabinet door components to move up and down in opposite directions.
2. The explosion-proof door latch switch cabinet according to claim 1, wherein the switching structure comprises a vertical push rod, a triangle shaft and a relay triangle, the second lock pin mounting seat of the lock pin push plate is further connected with one end of the vertical push rod, the other end of the vertical push rod is connected with a first angular position of the relay triangle, a second angular position of the relay triangle is connected with the triangle shaft, a third angular position of the relay triangle is connected with one end of the horizontal push rod, the other end of the horizontal push rod is connected with the upper part of the door latch fixing plate, the middle part of the door latch fixing plate is connected with the door latch, the lower part of the door latch fixing plate is connected with the slide rod, and the slide rod passes through the guide hole of the slide rod guide plate and is fixed on the door latch or the lock block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910282200.3A CN109958337B (en) | 2019-04-09 | 2019-04-09 | Explosion-proof latch mechanism and switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910282200.3A CN109958337B (en) | 2019-04-09 | 2019-04-09 | Explosion-proof latch mechanism and switch cabinet |
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| CN109958337A CN109958337A (en) | 2019-07-02 |
| CN109958337B true CN109958337B (en) | 2024-05-10 |
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| CN201910282200.3A Active CN109958337B (en) | 2019-04-09 | 2019-04-09 | Explosion-proof latch mechanism and switch cabinet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113969707A (en) * | 2021-11-26 | 2022-01-25 | 山东泰开成套电器有限公司 | Novel door plate locking device and locking method |
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| CN108019104A (en) * | 2017-12-13 | 2018-05-11 | 广新海事重工股份有限公司 | A kind of steel door handle lock |
| CN210976958U (en) * | 2019-04-09 | 2020-07-10 | 武汉华源电气设备有限责任公司 | Explosion-proof latch mechanism and switch cabinet |
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| CN205577759U (en) * | 2016-05-03 | 2016-09-14 | 胡圣伟 | Light people's air defense door |
| CN106088844A (en) * | 2016-08-04 | 2016-11-09 | 优尼可而机械（上海）有限公司 | A kind of inspection shaft intelligent anti-theft lock box |
| CN106476986A (en) * | 2016-11-30 | 2017-03-08 | 南京海獭软件有限责任公司 | A kind of fireproof pressure-proof watertight door |
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