CN112983142A

CN112983142A - Lock and automatic pressure relief switch cabinet with same

Info

Publication number: CN112983142A
Application number: CN201911303371.6A
Authority: CN
Inventors: 刘杲恒; 黄雄兵; 徐东东
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-06-18

Abstract

A lock and automatic pressure relief switch cabinet with the lock, the lock includes a lock sleeve installed on the switch cabinet door plate, and a lock core installed in the lock sleeve through a spring, the spring pushes the lock sleeve to approach to a lock tongue along the axial direction of the lock core, a positioning mechanism for positioning the lock core is arranged in the lock sleeve, the positioning mechanism includes two positioning parts respectively connected with the lock core and the lock sleeve, and the two positioning parts are stacked and arranged at one end of the spring along the axial direction of the lock core, the lock core drives the lock tongue and one positioning part to rotate, when the lock tongue rotates to the position of locking and unlocking with the lock plate, the two positioning parts of the positioning mechanism approach to each other to limit the lock core, the two mechanisms of the positioning mechanism and the lock sleeve are driven to work simultaneously through the spring, the two positioning parts approach to each other to reliably position the lock core when the positioning mechanism is driven by the spring, when the, and the door plate is driven to be automatically closed through the energy released by the spring after the high-pressure gas is exhausted.

Description

Lock and automatic pressure relief switch cabinet with same

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to a lockset and an automatic pressure relief switch cabinet with the lockset.

Background

The cubical switchboard is used for holding switching apparatus such as circuit breaker usually, and switching apparatus can give off the heat at the during operation, leads to cubical switchboard internal gas pressure to be in higher level always, when the cubical switchboard was closed, if switching apparatus breaks down, can cause cubical switchboard internal gas pressure to sharply increase in the twinkling of an eye, if can not effectual pressure release that carries on, then can cause the influence to other switching apparatus.

In addition, the door lock of the general switch cabinet, especially the door lock of the low-voltage switch cabinet, the door lock used basically distinguishes the left-handed door and the right-handed door structure, the door lock opens the right-handed door and closes in the left-handed direction, or opens the left-handed door and closes in the right-handed direction, there is not the structure that can close or open in the right-handed direction: the structure has installation limitation, namely when the left-handed door and the right-handed door are switched, different door locks need to be configured or the directions of components of the locks need to be adjusted, sometimes the same door opening direction occurs, the door needs to be opened through the left-handed door opening and the right-handed door opening, inconvenience is caused to an installer, meanwhile, certain confusion is caused to customers, the user needs to try to open the door in which direction each time the door is opened, obvious positioning is not generally carried out when the door is locked to the opening or closing position, over-operation or operation is not in place easily caused, and potential safety hazards are caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a lockset for realizing automatic pressure relief of a switch cabinet.

In order to achieve the purpose, the invention adopts the following technical scheme:

a lock comprises a lock plate and a lock body device matched with the lock plate in a locking way, wherein the lock body device comprises a lock sleeve and a lock core arranged in the lock sleeve through a spring, one end of the lock core extends out of the lock sleeve to be connected with the lock tongue, the lock core is rotated to drive the lock tongue to be locked and unlocked with the lock plate, the spring pushes the lock sleeve to approach the lock tongue along the axial direction of the lock core, a positioning mechanism for positioning the lock core is arranged in the lock sleeve, the positioning mechanism comprises two positioning parts respectively connected with the lock core and the lock sleeve, the two positioning parts are arranged at one end of the spring in a stacking way along the axial direction of the lock core, one of the positioning parts is provided with a jacking part, the other positioning part is provided with at least two yielding parts for accommodating the jacking part along the circumferential direction of the lock core, the at least two yielding parts respectively correspond to the positions when the lock tongue is locked and unlocked, the lock core drives, the spring pushes the jacking part on the positioning part into the yielding part on the other positioning part, so that the two positioning parts of the positioning mechanism are close to each other to limit the lock cylinder.

Preferably, the positioning mechanism comprises a positioning ring which is arranged between the lock sleeve and the lock cylinder and is connected with the lock cylinder, the positioning ring forms one positioning part of the positioning mechanism, and the lock sleeve forms the other positioning part matched with the positioning ring.

Preferably, the positioning mechanism comprises a positioning ring which is arranged between the lock sleeve and the lock core and is connected with the lock sleeve, the positioning ring forms one positioning part of the positioning mechanism, and the lock core forms the other positioning part matched with the positioning ring.

Preferably, the lock sleeve comprises a sleeve surrounding the lock cylinder and a bottom plate connected to one end of the sleeve, the lock cylinder comprises a lock head arranged in the lock sleeve and a lock body penetrating through the bottom plate and connected with the lock tongue, the positioning ring is sleeved on the lock body and located in the sleeve, and the lock head, the spring, the positioning ring and the bottom plate are sequentially arranged along the axial direction of the lock body.

Preferably, the circumference of the lock body is provided with a sliding groove which is arranged in parallel with the axis, and the annular wall of the inner ring of the positioning ring is provided with a guide block which is inserted into the sliding groove and is in sliding fit with the inner ring.

Preferably, be equipped with two along circumference evenly distributed's the portion that rises on the holding ring, two portions that rise are respectively for setting up the arch towards the bottom plate on the holding ring side, and the bottom plate of lock sleeve is equipped with four along circumference evenly distributed's the portion of letting, and four let the portion of putting respectively for setting up the recess at the bottom plate.

Preferably, the lock sleeve includes around the sleeve around the lock core to and connect the bottom plate in sleeve one end, and the lock core is including setting up the tapered end in the lock sleeve, and pass the lock body that bottom plate and spring bolt are connected, and the holding ring is installed in the sleeve, and the lock body passes the holding ring, and the axial of tapered end, holding ring, spring and lock sleeve is followed to the bottom plate of tapered end, holding ring, and the lock body sets gradually.

Preferably, the inner wall of the lock sleeve is provided with a guide rail arranged in parallel with the axis of the lock body, and the annular wall of the outer ring of the positioning ring is provided with a guide groove sleeved on the guide rail in sliding fit.

Preferably, be equipped with two along circumference evenly distributed's the portion of jacking on the holding ring, two portions of jacking are respectively for setting up the arch towards the tapered end on the holding ring side, and the tapered end is equipped with four along circumference evenly distributed's the portion of letting position towards the side of holding ring, and four let the portion of putting be the recess of setting on the tapered end respectively.

Preferably, the lock body passes one of the ends of the bottom plate and is provided with a clamping piece in spacing fit with the lock sleeve, and the spring can respectively drive the lock heads at the two ends and the lock sleeve to move towards the directions away from each other, so that the lock sleeve is abutted against the clamping piece of the lock body to limit the lock sleeve and the lock head.

Preferably, the spring bolt includes the connecting seat of being connected with the lock core to and two symmetries set up the lock ear in the connecting seat both sides, be equipped with on the jam plate with spring bolt complex locking notch, the length that the locking notch becomes the rectangle and locking notch is greater than the distance between two lock ear ends, the width of locking notch is greater than the width of connecting seat, and is less than the distance between two lock ear ends.

Preferably, the tapered end is installed on the inner side of the lock sleeve, an embedded groove is formed in the circumference of the tapered end, and a sealing piece matched with the inner wall of the lock sleeve is arranged in the embedded groove.

Preferably, the lock core can be rotated leftwards and rightwards to drive the lock tongue to rotate to the position of locking and unlocking with the lock plate.

The lockset created by the invention can be used for a self-pressure-relief switch cabinet and is used for realizing the self-pressure relief of the switch cabinet, the lock sleeve is driven to be close to the lock tongue by the spring along the axial direction of the lock core, and the two positioning parts of the positioning mechanism are arranged at one end of the spring in a stacking way along the axial direction of the lock core, so that the spring can simultaneously drive the positioning mechanism and the lock sleeve to work, the two positioning parts are mutually close to each other to reliably position the lock core when the spring drives the positioning mechanism, when the spring drives the lock sleeve, the lock sleeve can be driven to drive the door panel to be more reliably closed on the cabinet body, the cabinet body has excellent sealing performance, the impurities such as dust, water vapor and the like are prevented from entering the cabinet body to influence the work of a switching device, when a switching device in the cabinet body generates high-pressure gas, the door panel can be automatically opened in a spring compression mode, the high-, realize the automatic pressure release of cubical switchboard.

In addition, the receding part can be provided with a plurality of along the circumference of the lock cylinder, namely the lock tongue can have a plurality of locking and unlocking positions, the turning direction of the lock cylinder is not required to be limited, and the receding part not only can be used for opening a door at the left side, but also can be used for opening a door at the right side.

The utility model provides an automatic pressure release cubical switchboard, its includes the cabinet body, door plant and the tool to lock for with the cabinet body and door plant locking, the jam plate of tool to lock is installed on the door plant, lock body device install on the door plant.

Preferably, when high-pressure gas appears in the switch cabinet, the high-pressure gas pushes the door plate to drive the lock sleeve of the lock to compress the spring, so that the door plate is far away from the cabinet body, and the high-pressure gas in the cabinet body is discharged; when the pressure in the cabinet body is reduced, the spring pushes the lock sleeve to move towards the lock tongue, and the lock sleeve drives the door plate to be closed with the cabinet body again.

According to the automatic pressure relief switch cabinet, as the rotation direction of the lock cylinder 100 of the lock is bidirectional, no matter the door plate 520 is opened leftwards or rightwards, an operator can rotate the lock cylinder 100 according to the operation habit in daily life, no matter the door plate 520 is opened leftwards or preferably, the trouble brought to the operator can be avoided, and the automatic pressure relief switch cabinet also has the function of automatic pressure relief.

Drawings

Fig. 1 is a schematic structural diagram of a lock body device according to an embodiment of the invention;

FIG. 2 is a schematic structural view of a lock plate according to an embodiment of the present invention;

fig. 3 illustrates the unlocked position of the locking bolt and the locking plate according to the inventive embodiment;

fig. 4 is a position of the locking bolt of the inventive embodiment of the present invention when the locking bolt is rotated from the unlocked position to the locked position;

fig. 5 shows the locking position of the locking tongue and the locking plate according to the inventive embodiment;

FIG. 6 shows a door opened to release pressure when the latch is locked with the lock plate according to the embodiment of the present invention;

figure 7 is a partial cross-sectional view of a lock body assembly according to an embodiment of the invention;

figure 8 is a cross-sectional view of a lock body assembly according to an embodiment of the invention;

figure 9 is an exploded view of a lock body assembly according to an embodiment of the invention;

figure 10 is another exploded view of the lock body assembly of the inventive embodiment of the present invention;

figure 11 is a further exploded view of the lock body assembly of the inventive embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a lock cylinder according to a first embodiment of the present invention;

FIG. 13 is a schematic view of a retaining ring according to an embodiment of the present invention;

FIG. 14 is a partial cross-sectional view of a lock sleeve in accordance with one embodiment of the present invention;

FIG. 15 is a cross-sectional view of a lock sleeve in accordance with an embodiment of the present invention;

FIG. 16 is a top view of a lock sleeve according to an embodiment of the present invention;

FIG. 17 is a bottom view of a lock sleeve in accordance with an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a lock tongue in the first embodiment of the invention;

fig. 19 is a schematic structural diagram of a lock cylinder in a second embodiment of the invention;

FIG. 20 is a schematic view of a retaining ring according to a second embodiment of the present invention;

FIG. 21 is a partial cross-sectional view of a lock sleeve according to a second embodiment of the present invention;

fig. 22 is a top view of a lock sleeve according to a second embodiment of the present invention.

Detailed Description

The embodiments of the lock according to the present invention will be further described with reference to the embodiments shown in fig. 1 to 22. The inventive lock is not limited to the description of the following embodiments.

As shown in fig. 6-8, the switch cabinet includes a cabinet body 510 and a door plate 520, and the lock device of the present invention includes a lock body device (fig. 1) mounted on the door plate 520 and a lock plate 530 (fig. 2) mounted on the cabinet body;

the lock body device comprises a lock sleeve 400 arranged on a door plate 520 and a lock core 100 arranged in the lock sleeve 400 through a spring 310, one end of the lock core 100 extends out of the lock sleeve 400 to be connected with a bolt 200, the lock core 100 is rotated to drive the bolt 200 to be locked and unlocked with a lock plate 530, the spring 310 pushes the lock sleeve 400 to approach the bolt 200 along the axial direction of the lock core 100, a positioning mechanism 300 for positioning the lock core 100 is arranged in the lock sleeve 400, the positioning mechanism 300 comprises two positioning parts respectively connected with the lock core 100 and the lock sleeve 400, and the two positioning parts are stacked at one end of the spring 310 along the axial direction of the lock cylinder 100, the lock cylinder 100 drives the latch bolt 200 and one of the positioning parts to rotate respectively, one positioning part is provided with a jacking part 330, the other positioning part is provided with at least two yielding parts 340 for accommodating the jacking part 330 along the circumferential direction of the lock core 100, and the at least two displacement portions 340 correspond to the positions of the locking tongue 200 when locked and unlocked respectively; referring to fig. 3, when the latch tongue 200 rotates to a position for locking and unlocking with the lock plate 530, the spring 310 pushes the lifting part 330 on one positioning part into the releasing part 340 on the other positioning part, so that the two positioning parts of the positioning mechanism 300 approach each other to limit the lock cylinder 100;

referring to fig. 4, when the lock cylinder 100 drives the latch tongue 200 not to rotate to the position locked and unlocked with the lock plate 530, the jacking portion 330 compresses the spring 310 and dislocates with the abdicating portion 340, so that the two positioning portions of the positioning mechanism 300 are far away from each other, which is convenient for rotating the lock cylinder 100;

referring to fig. 5, when the latch 200 is locked with the lock plate 530 inside the cabinet 510 and the cabinet 510 generates high-pressure gas, the high-pressure gas pushes the door 520 to drive the lock sleeve 400 to compress the spring 310, so that the door 520 is far away from the cabinet 510 by a distance H (fig. 6), and the high-pressure gas inside the cabinet 510 is discharged;

when the pressure in the cabinet 510 drops, the spring 310 pushes the lock sleeve 400 to move toward the lock tongue 200 limited on the lock plate 530 in the cabinet 510, and drives the door plate 520 to close the cabinet 510 again, and the position returns to the position shown in fig. 5.

The lockset created by the invention can be used for a self-pressure-relief switch cabinet and is used for realizing the self-pressure relief of the switch cabinet, the spring 310 drives the lock sleeve 400 to be close to the bolt 200 along the axial direction of the lock cylinder 100, and the two positioning parts of the positioning mechanism 300 are arranged at one end of the spring 310 in a stacking manner along the axial direction of the lock cylinder 100, so that the spring 310 can simultaneously drive the two mechanisms of the positioning mechanism 300 and the lock sleeve 400 to work, the two positioning parts are mutually close to each other when the spring 310 drives the positioning mechanism 300 to reliably position the lock cylinder 100, when the spring 310 drives the lock sleeve 400, the lock sleeve 400 can be driven to drive the door panel 520 to be more reliably closed on the cabinet body 510, the cabinet body 510 has excellent sealing property, impurities such as dust, water vapor and the like are prevented from entering the cabinet body 510 to influence the work of a switch electric appliance, and when the switch electric appliance, the high-pressure gas in the cabinet body 510 is automatically discharged, and after the high-pressure gas is discharged, the spring 310 releases energy to drive the door plate 520 to be automatically closed, so that the automatic pressure relief of the switch cabinet is realized. In addition, the positioning portion 340 may be provided in a plurality of numbers along the circumferential direction of the lock cylinder 100, that is, the lock tongue 200 may have a plurality of locking and unlocking positions, and the rotation direction of the lock cylinder 100 is not limited, and may be used for both left-hand opening and right-hand opening.

Fig. 3-18 and 19-22 show two preferred embodiments of the present invention, respectively, wherein the positioning mechanism 300 comprises a positioning ring 320 disposed between a lock sleeve 400 and the lock cylinder 100, and the positioning ring 320 forms one positioning portion of the positioning mechanism 300, and the lock cylinder 100 and the lock sleeve 400 form another positioning portion cooperating with the positioning ring 320, which can be understood as being integrally formed with the lock cylinder 100 or the lock sleeve 400. Of course, the positioning portion can also be independently installed on the lock cylinder 100 or the lock sleeve 400 and cooperate with the positioning ring 320, which falls within the protection scope of the present invention.

Example one

As shown in fig. 12-14, the positioning ring 320 of the present embodiment is connected to the lock cylinder 100, and the lock sleeve 400 forms another positioning portion for cooperating with the positioning ring 320.

The lock sleeve 400 is of a cylindrical structure with an open end, the lock sleeve 400 comprises a sleeve 410 surrounding the lock core 100 and a bottom plate 420 connected to one end of the sleeve 410 and having an annular structure, the lock core 100 comprises a lock head 120 arranged in the lock sleeve 400 and a lock body 110 penetrating through the bottom plate 420 and connected with the lock tongue 200, a positioning ring 320 is sleeved on the lock body 110 and positioned in the sleeve 410, the lock head 120, a spring 310, the positioning ring 320 and the bottom plate 420 are sequentially arranged along the axial direction of the lock body 110, an ejector 600 in spacing fit with the lock sleeve 400 is arranged at one end of the lock body 110 penetrating through the bottom plate 420, one end of the spring 310 is connected with the lock head 120, the other end of the spring 310 is connected with the positioning ring 320 and pushes the bottom plate 420 through the positioning ring 320, the spring 310 can respectively drive the lock head 120 and the lock sleeve 400 at two ends to move towards directions away from each other, so that the, and the positioning member 320 disposed between the spring 310 and the bottom plate 420 is pressed against the bottom plate 420 of the lock sleeve 400 by the spring 310.

High-pressure gas in the cubical switchboard can promote door plant 520, the drive is installed lock sleeve 400 on door plant 520 and is kept away from fastener 600 and compression spring 310, high-pressure gas discharges the back, spring 310 releases can and drives lock sleeve 400 and drive door plant 520 reclosing, even there is not high-pressure gas, it is closed on the cabinet body 510 to drive door plant 520 through spring 310, spring 310's drive power is not only bigger, make door plant 520 can more powerful locking on the cabinet body 510, effectively improve the seal of cubical switchboard, even when vibrations appear in the cubical switchboard, spring 310's drive power can be adjusted automatically, guarantee that door plant 520 can continuously be closed reliably.

The clip 600 is used to limit the distance between the lock head 120 and the bottom plate 420, which not only facilitates the pre-assembly of the lock cylinder 100, the lock sleeve 400 and the spring 310, but also keeps the spring 310 compressed to a certain degree. Of course, the latch 600 may not be provided, and the distance between the lock sleeve 400 and the lock head 120 may be limited by the cabinet 510 being engaged with the door panel 520 or the lock tongue 200 being engaged with the lock sleeve 400, so long as the spring 310 is compressed to a certain degree between the lock sleeve 400 and the lock head 120, which belongs to the protection scope of the present invention. In addition, the latch 600 may be disposed at other positions, such as at the opening position of the lock sleeve 400, to limit the movement of the lock head 120 away from the lock sleeve 400.

Further, since the spring 310 is always kept in a compressed state, the positioning member 320, which is disposed between the spring 310 and the bottom plate 420 and connected to the lock body 110, is always abutted against the bottom plate 420 of the lock sleeve 400 under the driving of the spring 310, and the positioning member 320 is matched with the bottom plate 420 of the lock sleeve 400 to limit the lock body 110.

Specifically, be equipped with two spouts 321 with axis parallel arrangement on the circumference of lock body 110, and two spouts 321 set up the both sides at lock body 110 relatively, the rampart of the inner ring of holding ring 320 is equipped with two and inserts spout 321 sliding fit's guide block 322 respectively, and be equipped with two jacking portions 330 along circumference evenly distributed on holding ring 320, two jacking portions 330 are respectively for setting up the arch towards bottom plate 420 on the holding ring 320 side, bottom plate 420 of lock sleeve 400 is equipped with four and lets the position portion 340 along circumference evenly distributed, four let the position portion 340 be the recess that sets up at bottom plate 420 respectively. After the jacking portion 330 entered the position-giving portion 340, the spring 310 would push the jacking portion 330 to keep in the position-giving portion 340, play the spacing effect to the lock core 100 through the resistance between the position-giving portion 340 and the jacking portion 330, prevent the lock core 100 from rotating autonomously, only when the lock core 100 is rotated manually, the jacking portion 330 can just overcome and give the position the resistance roll-off of portion 340, when the jacking portion 330 rolls off the position-giving portion 340, the jacking portion 330 jacks up the positioning ring 320 and compresses the spring 310, the manual rotation of the lock core 100 would not be affected.

One advantage of the positioning mechanism 300 of the present embodiment is that the positioning ring 320 is inserted into the sliding slot 321 through the guiding block 322 and is engaged in a circumferential position limiting manner, so that the positioning ring 320 can move in a direction parallel to the axis of the lock cylinder 100, and when the lifting portion 330 slides out of the positioning portion 340 to lift the positioning ring 320, or the door panel 520 is lifted up by the high-pressure gas and drives the bottom plate 420 to compress the spring 310, the positioning ring 320 can move flexibly and reliably, and the problems of skewing or jamming and the like can not occur while the actions of other mechanisms are not interfered. It can be understood that the positions of the guiding block 322 and the sliding groove 321 can be interchanged, and after the interchange, the guiding block 322 is disposed on the protruding strip on the outer side of the circumference of the lock body 110, and the length direction is parallel to the axis of the lock cylinder 100, and the sliding groove 321 is disposed on the inner ring wall of the positioning ring 320 and is slidably fitted on the protruding strip, all of which belong to the protection scope of the present invention.

Another advantage of the positioning mechanism 300 of this embodiment is that the yielding portion 340 and the jacking portion 330 are respectively a groove and a protrusion, which not only has the characteristics of simple structure, easy assembly and low cost, but also does not limit the rotation direction of the lock cylinder 100, so that both the left-hand rotation and the right-hand rotation of the lock cylinder 100 can work, and both the left-hand rotation and the right-hand rotation of the lock cylinder 100 can make the jacking portion 330 rotate out of the current yielding portion 340 and then rotate into the other next group of location portions 340, so as to drive the lock tongue 200 to rotate to the position where the lock tongue is locked and unlocked with the lock plate 530. It is understood that the positions of the receding portion 340 and the lifting portion 330 can be interchanged, and it is within the scope of the present invention that the lifting portion 330 is a protrusion disposed on the bottom plate 420 and the receding portion 340 is a groove disposed on the positioning ring 320 after the interchange. In addition, in this embodiment, two lifting portions 330 are matched with the four yielding portions 340, two yielding portions 340 symmetrically disposed at two sides of the lock cylinder 100 correspond to the locking positions of the lock tongue 200, the other two yielding portions 340 symmetrically disposed at the other two sides of the lock cylinder 100 correspond to the unlocking positions of the lock tongue 200, and the two lifting portions 330 are symmetrically disposed and have the characteristic of good balance. Of course, the number of yield portions 340 and jacking portions 330 may also vary:

if the lock core rotates 360 degrees, the number of the yielding parts 340 is 4, and the yielding parts are circumferentially and symmetrically distributed, and the number of the jacking parts 330 is less than or equal to the number of the yielding parts 340, but is not less than 1;

if the lock core rotates 180 degrees, the number of the abdicating parts 340 is at least 3, two of the abdicating parts are distributed 180 degrees, and the number of the jacking parts 330 is less than or equal to the number of the abdicating parts 340, but is not less than 1;

if the lock core rotates 90 degrees, the number of the abdicating parts 340 is at least 2, two of the abdicating parts are distributed 90 degrees, and the number of the jacking parts 330 is less than or equal to the number of the abdicating parts 340, but not less than 1.

As shown in fig. 18, the structure of the latch tongue 200 is shown, the latch tongue 200 is matched with the locking plate 530 of fig. 2, the latch tongue 200 of the present embodiment has a symmetrical structure, the latch tongue 200 includes a connecting seat 210 connected with the lock cylinder 100, and two locking lugs 220 symmetrically arranged at both sides of the connecting seat 210, the locking plate 530 is provided with locking notches 534 matched with the latch tongue 200, the locking notches 534 are rectangular, the length and width of the locking notches 534 respectively correspond to the latch tongue 200, the length of the locking notches 534 is greater than the distance between the ends of the two locking lugs 220, when the latch tongue 200 rotates to the direction parallel to the length of the locking notches 534, the latch tongue 200 is the unlocking position of the latch tongue 200, and the locking notches 534 are used for avoiding the;

the width of the locking notch 534 is greater than the width of the connecting seat 210 and less than the distance between the ends of the two locking lugs 220, when the bolt 200 rotates to the direction perpendicular to the length of the locking notch 534, the locking plate 530 is used for limiting the locking lug 220 corresponding to the edge of the locking notch 534, the lock cylinder 100 cannot drive the bolt 200 to leave the locking plate 530, so as to lock the door plate 520 with the cabinet 510, at this time, the lock cylinder 100 can drive the bolt 200 to rotate back to the direction parallel to the length of the locking notch 534, and then can drive the bolt 200 to leave the locking plate 530, so that the door plate 520 is in an unlocking state. It can be understood that the lock tongue 200 can also be in an asymmetric structure, even if only one side is provided with the lock lug 220, the lock tongue can be limited with the lock plate 530, but the two lock lugs 220 symmetrically arranged at the two sides are respectively limited, so that the balance is better, the lock can be opened or locked by rotating 180 degrees in the left direction, and can be opened or locked by rotating 180 degrees in the right direction, and the door opening direction of the left-handed door or the right-handed door cannot be inconsistent. In addition, the locking notch 534 may have other shapes, such as an oval shape or a square shape, and the diagonal direction of the square shape may be parallel to the length direction of the latch bolt 200 to allow the latch bolt 200 to pass through.

Example two

As shown in fig. 19-22, the positioning ring 320 of the present embodiment is disposed at the other end of the spring 310 in the first embodiment and is connected to the lock sleeve 400, and the lock head 120 forms another positioning portion for cooperating with the positioning ring 320.

Specifically, the lock sleeve 400 is a cylindrical structure with an open end, the lock sleeve 400 includes a sleeve 410 surrounding the lock cylinder 100, and a bottom plate 420 connected to one end of the sleeve 410 and having a ring structure, the lock cylinder 100 includes a lock head 120 disposed in the lock sleeve 400, and a lock body 110 passing through the bottom plate 420 and connected to the lock tongue 200, the positioning ring 320 is disposed in the sleeve 410, the lock body 110 passes through the positioning ring 320, the lock head 120, the positioning ring 320, the spring 310 and the bottom plate 420 of the lock sleeve 400 are sequentially disposed along the axial direction of the lock body 110, a latch 600 engaging with the lock sleeve 400 is disposed at one end of the lock body 110 passing through the bottom plate 420, one end of the spring 310 is connected to the bottom plate 420 of the lock sleeve 400, the other end of the spring 310 is connected to the positioning ring 320 and pushes the lock head 120 through the positioning ring 320, the spring 310 can respectively drive the lock head 120 and the lock sleeve 400 at both ends to move in directions away from each other, so, meanwhile, the positioning member 320 disposed between the spring 310 and the locking head 120 is urged by the spring 310 to abut against the locking head 120. The function of the card 600 and the principle of releasing high-pressure gas in the switch cabinet are the same as those of the first embodiment.

Further, the inner wall of the lock sleeve 400 is provided with two guide rails 323 parallel to the axis of the lock body 110, the two guide rails 323 are oppositely arranged on two sides of the lock body 110, the annular wall of the outer ring of the positioning ring 320 is provided with two guide grooves 324 respectively sleeved on the guide rails 323 and slidably engaged with each other, the positioning ring 320 is provided with two jacking portions 330 uniformly distributed along the circumferential direction, the two jacking portions 330 are respectively protrusions arranged on the side surface of the positioning ring 320 and facing the lock head 120, the side surface of the lock head 120 facing the positioning ring 320 is provided with four abdicating portions 340 uniformly distributed along the circumferential direction, and the four abdicating portions 340 are respectively grooves arranged on the lock head 120.

The positioning principle of the positioning mechanism 300 of this embodiment is the same as that of the first embodiment, and the positions of the lifting portion 330 and the receding portion 340 of this embodiment can be interchanged, and the positions of the guide rail 323 and the guide groove 324 can also be interchanged. Moreover, the number of the abdicating part 340 and the jacking part 330 can be changed, and the number of the guide rails 323 and the guide grooves 324 can also be changed, so that the lock core can rotate by 360 degrees, 180 degrees, 90 degrees and the like as described above, and the details are not repeated herein; the number of the guide rails 323 and the guide grooves 324 needs to be ensured to be in one-to-one correspondence, but at least 1 group, or a plurality of groups, where the plurality of groups may be distributed symmetrically or asymmetrically, all of which belong to the protection scope created by the present invention.

The assembly process and the specific structure of the first embodiment are respectively shown in combination with fig. 7-11 and fig. 12-18.

As shown in fig. 12, the lock core 100 includes a lock body 110 and a lock head 120 disposed at one end of the lock body 110, the other end of the lock body 110 is connected to the latch 200, the lock head 120 is mounted inside a lock sleeve 400, an embedded groove 122 is disposed on the circumference of the lock head 120, a sealing member 123 (see fig. 7-8) is disposed in the embedded groove 122 and is engaged with the inner wall of the lock sleeve 440, the diameter of the lock head 120 is larger than that of the lock body 110, the middle of the inner side of the lock head 120 is connected to the lock body 110, an annular lock head supporting surface 121 is formed on the inner side of the lock head 120, two sliding grooves 321 disposed parallel to the axis of the lock body 110 are disposed on the circumference of the side of the lock body 110, the two sliding grooves 321 are symmetrically disposed on both sides of the lock body 110, the sliding grooves 321 are used for guiding a positioning ring 320, a latch mounting, the bolt mounting boss 111 may also be oval or rectangular with symmetrical two sides being rounded. Referring to fig. 9-10 and 18, the latch tongue 200 includes a connecting seat 210 and two lock lugs 220 symmetrically disposed on two sides of the connecting seat 210, a latch tongue mounting groove 113 fitted around the latch tongue mounting boss 111 in a limiting manner is disposed on the connecting seat 210, a latch tongue through hole 114 corresponding to the latch tongue mounting hole 112 is disposed at the bottom of the latch tongue mounting groove 113, a mounting screw 115 passes through the latch tongue through hole 114 and is connected to the latch tongue mounting hole 112, the latch tongue 200 and the lock body 110 are fixed, a slot 116 for connecting a clip 600 is disposed on the circumference of the lock body 110, the clip 600 is fixed to the slot 116 and then limits the lock sleeve 400, the length of the spring 310 clamped between the lock sleeve 400 and the lock head 120 is further limited, the spring 310 is guaranteed to be compressed to a certain extent all the time, and the spring force of.

As shown in fig. 14-17, the lock sleeve 400 includes a sleeve 410 surrounding the lock core 100, and a bottom plate 420 connected to one end of the sleeve 410 and having an annular structure, the other end of the sleeve 410 is open and is provided with a lock sleeve head 430 extending outward in the radial direction to be matched with the door plate 520, the middle of the bottom plate 420 is provided with a lock sleeve through hole 421 for avoiding the lock body 110, the side of the bottom plate 420 facing the inside of the sleeve 410 is a bearing surface 421 for being matched with the positioning ring 320, the bearing surface 421 is provided with four grooves uniformly distributed in the circumferential direction to form the relief portions 340, the relief portions 340 on the bearing surface 421 can also be interchanged with the lifting portions 330 on the positioning ring 320, and the number of the relief portions 340 can also be changed to ensure corresponding to the locking and unlocking positions of the locking tongue 200, which will not.

The outer circumference of the sleeve 410 is provided with 4 lock sleeve planes 411, wherein 2 lock sleeve planes 411 are symmetrically arranged on two sides, the other 2 lock sleeve planes 411 are symmetrically arranged on the other two sides, that is, the 4 planes are symmetrically arranged with the axis center of the sleeve 410, two of the symmetrically arranged lock sleeve planes 411 are respectively provided with a lock sleeve fixing groove 412 for fixing the lock sleeve 400, the other two lock sleeve planes 411 can be made by the outer circumference of the sleeve 410 through a material removing process, and of course, if the material is not removed, the two lock sleeve planes 411 are not provided. The lock sleeve fixing groove 412 is matched with the U-shaped clamping piece, after the lock sleeve 400 penetrates through the door plate 520, the lock sleeve head 430 at the end part of the lock sleeve 400 is located on one side of the door plate 520, the lock sleeve fixing groove 412 is located on the other side of the door plate 520, the elastic leg lock sleeve fixing grooves 412 on the two sides of the U-shaped clamping piece abut against the side walls, opposite to the lock sleeve fixing groove 412 and the door plate 520, of the two sides of each elastic leg, so that the sleeve 430 and the U-shaped clamping piece clamp the door plate 520 from the two sides respectively, and the lock sleeve 400 is fixedly installed on. In addition, the lock sleeve fixing groove 412 may not be disposed on the lock sleeve plane 411, and may be disposed directly on the outer circumference of the sleeve 410, which falls within the protection scope of the present invention.

As shown in fig. 13, the positioning ring 320 is in a ring-shaped structure and is sleeved between the inner side of the sleeve 410 and the outer side of the lock body 110, the positioning ring 320 can rotate along with the lock body 110 along the circumferential direction of the lock body 110 and can move along the axial direction of the lock body 110 under the driving of the spring 310 and the jacking portion 330, and the positioning ring 320 can also be in other shapes, such as a triangle or a square, and can not interfere with the lock sleeve 400 during rotation and movement. Unlike the second embodiment, the positioning ring 320 in the second embodiment does not need to rotate with the lock body 110, but still needs to move along the axial direction of the lock body 110.

The wall of the inner ring of the positioning ring 320 is provided with two guiding blocks 322 which are respectively in sliding fit with the sliding grooves 321 of the lock body 110, after assembly, the positioning ring 320 can keep rotating synchronously with the lock core 100 when the lock core 100 is rotated, and the guiding blocks 322 are matched with the sliding grooves 321, so that not only is the guiding function achieved, but also the circumferential constraint is achieved between the positioning ring 320 and the lock core 100, and the synchronous rotation of the positioning ring 320 and the lock core 100 is ensured. It is understood that the number of the guide blocks 322 and the sliding slots 321 can be changed, and the plurality of guide blocks 322 can also be arranged asymmetrically, and preferably, the included angle between two adjacent guide blocks 322 is less than 180 degrees. The side of one side of the positioning ring 320 is engaged with the spring 310, and the side of the other side of the positioning ring 320 is provided with two lifting portions 330, so that the lock cylinder can rotate 360 degrees, 180 degrees, 90 degrees and the like as described above, and further description is omitted here.

As shown in fig. 7-11, during the assembling process, the washer 900 is firstly sleeved on one end of the sleeve 410 corresponding to the sleeve head 430, then the sealing member 123, the spring 310 and the positioning ring 320 are sequentially sleeved on the lock cylinder 100, the guide block 322 on the positioning ring 320 is matched with the sliding slot 321 on the lock body 110, then the lock cylinder 100 is inserted into the sleeve 410, while the two lifting portions 330 of the positioning ring 320 are engaged with the two relief portions 340 on the bottom plate 420, a certain pushing force is applied on the lock head 120 of the lock cylinder 100, after overcoming the resistance of the spring 310, the slot 116 on the lock body 110 for connecting the clip 600 passes through the bottom plate 420, then the clip 600 is clipped into the slot 104 matched therewith, at this time, the force applied on the lock head 120 is released, and the lock cylinder 100 is limited on the lock sleeve 400. Then the latch bolt 200 is sleeved on the lock cylinder 100, and finally the latch bolt 200 is connected with the lock cylinder 100 through the mounting screw 115 to prevent the lock cylinder 100 from falling off. Preferably, the connecting direction of the two locking lugs 220 on the locking tongue 200 is parallel to the direction of the slot 124 on the lock head 120, and the position of the locking lug 220 can be indicated by the direction of the slot 124, although the connecting direction of the two locking lugs 220 and the direction of the slot 124 can also form a certain angle.

As shown in fig. 18, the latch tongue 200 includes a connection seat 210 and two lock lugs 220 symmetrically disposed on two sides of the connection seat 210, the connection seat 210 is a cylindrical structure, the two lock lugs 220 are respectively arc-shaped structures (fig. 11) bent towards one side of the lock cylinder 100, and a recess is formed on one side of each of the two lock lugs 220 away from the lock cylinder 110, the top positions of the two bent lock lugs 220 are in limit fit with the lock plate 530, and the side edges of the two bent sides of the two lock lugs 220 can play a guiding role when being clamped into the lock plate 530, so as to reduce friction force, and the recess on the other side of each of the two lock lugs 220 not only can save materials, but also can play a role in enhancing the strength of the lock lug. Of course, no recess may be provided on the locking lug 220.

The connecting base 210 is provided with a bolt mounting groove 113 which is sleeved on the periphery of the bolt mounting boss 111 and is in limit fit, the bottom of the bolt mounting groove 113 is provided with a bolt through hole 114 corresponding to the bolt mounting hole 112, the bolt mounting hole 112 is overlapped with the central axis of the bolt through hole 114, the shape of the mounting groove 113 is matched with that of the bolt mounting boss 111, the bottom surface of the mounting groove 113 is attached to the end surface of the bolt mounting boss 111, and the lock cylinder 100 drives the bolt 200 to rotate synchronously when rotating.

As shown in fig. 2, the locking plate 530 includes a first side plate 531 and a second side plate 532 disposed opposite to each other, and a connecting plate 533 connected between one ends of the first side plate 531 and the second side plate 532, the first side plate 531 is provided with a locking plate mounting hole 535 connected to the cabinet 510, and the connecting plate 533 is provided with a locking notch 534 engaged with the locking tongue 200.

As shown in fig. 3, when the door plate 520 is closed or a certain pressure is applied to the lock cylinder 120 to make the lock lug 220 recede from the connecting plate 533 to a certain distance or recede beyond the connecting plate 533, the lock tongue 200 and the positioning ring 320 can be driven to rotate by rotating the lock cylinder 100 clockwise or counterclockwise, but the raised portion 330 of the positioning ring 320 is driven by the spring 310 to be in spacing fit with the receding portion 340 of the lock sleeve 400, so that resistance against the rotation of the lock cylinder 100 is formed.

As shown in fig. 4, when the rotating force is further increased to overcome the friction between the receding portion 340 and the lifting portion 330, the lifting portion 330 slides out of the receding portion 340 and compresses the spring 310, the receding portion 340 contacts the supporting surface 421 on the bottom plate 420, and the gap between the supporting surface 421 and the positioning ring 320 is increased.

As shown in fig. 5, the lock core 100 continues to rotate in the same direction, and when the lifting portion 330 of the positioning ring 320 reaches the next indentation 340, the spring 310 releases the spring force, the lifting portion 330 is pushed into the indentation 340 again, and the latch tongue reaches the locked position, and the door 520 is locked in the closed position. The lock core 100 can be accurately positioned when the door bolt 200 is locked or unlocked, and the lock core 100 cannot be rotated by a small rotating force due to the friction force action of the positioning part 340 and the jacking part 330 when the lock core 100 is positioned, so that a certain anti-misoperation function is achieved. The position of the latch bolt 200 can be quickly identified through the opening direction of the lock head 120. The gap D between the retaining ring 320 and the bearing surface 421 increases in size when the door lock is in the intermediate open and closed positions.

The switch cabinet adopts the lockset as the door lock, the two positions can be switched by rotating left or right, the positioning structure is arranged at each working position, each position is ensured to be accurate, and meanwhile, the spring structure is added on the door lock, so that the pressure can be effectively released when the pressure in the switch cabinet is high while the locking force of the door lock is ensured. The door lock with the design can realize the following advantages:

1. when the door lock reaches the closing and opening positions, the door lock can be automatically positioned without depending on manual feeling;

2. the unlocking can be carried out only through the rotating force without manual pressing, the manual work is reduced, and the force can be adjusted by increasing the force arm of the rotating key during rotation;

3. the left-handed operation and the right-handed operation of the door lock are completely the same, so that the door lock can meet the operation requirements of each person;

4. when the door opening direction of the door plate is different, the door lock can be used without any adjustment;

5. when the door lock is in an opening or closing position, the position inaccuracy caused by further rotation can be effectively prevented;

6. the door lock has a pressure relief function under the condition of self-positioning.

The invention also provides an automatic pressure relief switch cabinet, which comprises a cabinet body 510, a door plate 520 and the lock, wherein the lock is used for locking the cabinet body 510 and the door plate 520, a lock plate 530 of the lock is arranged on the door plate 520, and the lock body device is arranged on the door plate 520.

When high-pressure gas appears in the switch cabinet, the high-pressure gas pushes the door plate 520 to drive the lock sleeve 400 of the lock to compress the spring 310, so that the door plate 520 is far away from the cabinet body 510, and the high-pressure gas in the cabinet body 510 is discharged; when the pressure in the cabinet 510 drops, the spring 310 pushes the lock sleeve 400 to move toward the lock tongue 200, and the lock sleeve 400 drives the door 520 to close the cabinet 510 again.

It can be understood that, because of the limitation of the space around the switch cabinet, in order to avoid the situation that the door 520 may not be completely opened due to the left-handed door or the right-handed door, when the door 520 is hinged to the side wall of one side of the cabinet body 510, the door 520 is one of the left-handed door or the right-handed door, and when the door 520 is hinged to the side wall of the other side of the cabinet body 510, the door 520 is the other of the left-handed door or the right-handed door.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

Claims

1. A lock, its characterized in that: the lock comprises a lock plate (530) and a lock body device matched with the lock plate (530) in a locking mode, wherein the lock body device comprises a lock sleeve (400) and a lock core (100) installed in the lock sleeve (400) through a spring (310), one end of the lock core (100) extends out of the lock sleeve (400) to be connected with a lock tongue (200), the lock core (100) is rotated to drive the lock tongue (200) to be locked and unlocked with the lock plate (530), the spring (310) pushes the lock sleeve (400) to approach the lock tongue (200) along the axial direction of the lock core (100), a positioning mechanism (300) used for positioning the lock core (100) is arranged in the lock sleeve (400), the positioning mechanism (300) comprises two positioning parts respectively connected with the lock core (100) and the lock sleeve (400), the two positioning parts are arranged at one end of the spring (310) in a stacking mode along the axial direction of the lock core (100), a jacking part (330) is arranged on one positioning part, and at least two yielding parts (340) used for accommodating the jacking part (330, and at least two let position portions (340) correspond to the positions of the lock tongue (200) during locking and unlocking respectively, the lock cylinder (100) drives the lock tongue (200) and one positioning portion to rotate, when the lock tongue (200) rotates to the position of locking or unlocking with the lock plate (530), the spring (310) pushes the lifting portion (330) on the positioning portion into the let position portion (340) on the other positioning portion, so that the two positioning portions of the positioning mechanism (300) are close to each other to limit the lock cylinder (100).

2. The lock according to claim 1, characterized in that: the positioning mechanism (300) comprises a positioning ring (320) which is arranged between the lock sleeve (400) and the lock cylinder (100) and connected with the lock cylinder (100), the positioning ring (320) forms one positioning part of the positioning mechanism (300), and the lock sleeve (400) forms the other positioning part matched with the positioning ring (320).

3. The lock according to claim 1, characterized in that: the positioning mechanism (300) comprises a positioning ring (320) which is arranged between the lock sleeve (400) and the lock cylinder (100) and connected with the lock sleeve (400), the positioning ring (320) forms one positioning part of the positioning mechanism (300), and the lock cylinder (100) forms the other positioning part matched with the positioning ring (320).

4. The lock according to claim 2, characterized in that: the lock sleeve (400) comprises a sleeve (410) surrounding a lock cylinder (100) and a base plate (420) connected to one end of the sleeve (410), the lock cylinder (100) comprises a lock head (120) arranged in the lock sleeve (400) and a lock body (110) penetrating through the base plate (420) and connected with a lock bolt (200), a positioning ring (320) is sleeved on the lock body (110) and located in the sleeve (410), and the lock head (120), a spring (310), the positioning ring (320) and the base plate (420) are sequentially arranged along the axial direction of the lock body (110).

5. The lock according to claim 4, characterized in that: the circumference of the lock body (110) is provided with a sliding groove (321) which is arranged in parallel with the axis, and the annular wall of the inner ring of the positioning ring (320) is provided with a guide block (322) which is inserted into the sliding groove (321) and is in sliding fit.

6. The lock according to claim 4, characterized in that: the positioning ring (320) is provided with two jacking portions (330) which are uniformly distributed along the circumferential direction, the two jacking portions (330) are respectively arranged on the side surface of the positioning ring (320) and protrude towards the bottom plate (420), the bottom plate (420) of the lock sleeve (400) is provided with four position yielding portions (340) which are uniformly distributed along the circumferential direction, and the four position yielding portions (340) are respectively arranged in grooves of the bottom plate (420).

7. The lock according to claim 3, wherein: the lock sleeve (400) comprises a sleeve (410) surrounding a lock cylinder (100) and a base plate (420) connected to one end of the sleeve (410), the lock cylinder (100) comprises a lock head (120) arranged in the lock sleeve (400) and a lock body (110) penetrating through the base plate (420) and connected with a lock bolt (200), a positioning ring (320) is arranged in the sleeve (410), the lock body (110) penetrates through the positioning ring (320), and the lock head (120), the positioning ring (320), a spring (310) and the base plate (420) of the lock sleeve (400) are sequentially arranged along the axial direction of the lock body (110).

8. The lock according to claim 7, wherein: the inner wall of the lock sleeve (400) is provided with a guide rail (323) which is parallel to the axis of the lock body (110), and the annular wall of the outer ring of the positioning ring (320) is provided with a guide groove (324) which is sleeved on the guide rail (323) in a sliding fit manner.

9. The utility model provides an automatic pressure release cubical switchboard which characterized in that: comprising a cabinet (510), a door panel (520) and a lock according to any of claims 1-8 for locking the cabinet (510) and the door panel (520), the lock plate (530) of the lock being mounted on the door panel (520) and the lock body arrangement being mounted on the door panel (520).

10. The automatic pressure relief switchgear as claimed in claim 9, wherein: when high-pressure gas occurs in the switch cabinet, the high-pressure gas pushes the door panel (520) to drive the lock sleeve (400) of the lockset to compress the spring (310), so that the door panel (520) is far away from the cabinet body (510), and the high-pressure gas in the cabinet body (510) is discharged; when the pressure in the cabinet body (510) is reduced, the spring (310) pushes the lock sleeve (400) to move towards the lock bolt (200), and the lock sleeve (400) drives the door panel (520) to close with the cabinet body (510) again.