Lock and automatic pressure relief switch cabinet with the lock

Abstract

A lock and an automatic pressure relief switch cabinet with the lock, the lock comprises a lock sleeve installed on a door panel of the switch cabinet, and a lock core installed in the lock sleeve by a spring, the spring pushes the lock sleeve toward a lock tongue along the axial direction of the lock core, a positioning mechanism for positioning the lock core is provided in the lock sleeve, the positioning mechanism comprises two positioning parts respectively connected to the lock core and the lock sleeve, and the two positioning parts are stacked along the axial direction of the lock core at one end of the spring, the lock core drives the lock tongue and a positioning part to rotate, when the lock tongue is rotated to a position locked and unlocked with a lock plate, the two positioning parts of the positioning mechanism are brought close to each other to limit the lock core, the positioning mechanism and the lock sleeve are driven to work at the same time by the spring, when the spring drives the positioning mechanism, the two positioning parts are brought close to each other to reliably position the lock core, when the spring drives the lock sleeve, the door panel can be opened to automatically release pressure by compressing the spring, and the door panel can be automatically closed by releasing energy of the spring after the high-pressure gas is discharged.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, in particular to a lock and an automatic pressure relief switch cabinet having the lock. Background Art

[0002] Switch cabinets are usually used to accommodate switching electrical appliances such as circuit breakers. Switch cabinets will emit heat when working, causing the air pressure in the switch cabinet to remain at a high level. When the switch cabinet is closed, if the switch cabinet fails, the air pressure in the switch cabinet will increase sharply instantly. If the pressure cannot be effectively released, it will affect other switching electrical appliances.

[0003] In addition, the door locks of general switch cabinets, especially the door locks of low-voltage switch cabinets, basically distinguish between left-opening and right-opening structures. The door locks are turned left to open and right to close, or turned right to open and turned left to close. There is no structure that can be closed or opened by turning left or right: that is, switching from one state to the other state between the closed and open states can be achieved by turning left or right. This structure has installation limitations, that is, when switching between left-opening and right-opening, it is necessary to configure different door locks or adjust the direction of the lock components. Sometimes, when the same door opening direction occurs, the door can be opened by turning left or right, which causes inconvenience to the installer and confusion to the customer. Every time the door is opened, it is necessary to try which direction to open the door. There is generally no obvious positioning for the door lock to the open or closed position, which can easily cause over-operation or improper operation, thereby causing safety hazards. Summary of the invention

[0004] The purpose of the invention is to overcome the defects of the prior art and provide a lock for realizing automatic pressure relief of a switch cabinet.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] When the lock tongue is rotated to a position locked or unlocked with the lock plate, the spring pushes the lifting 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 core.

[0007] Preferably, the positioning mechanism comprises a positioning ring which is arranged between the lock sleeve and the lock core and connected to the lock core, the positioning ring constitutes a positioning part of the positioning mechanism, and the lock sleeve constitutes another positioning part which cooperates with the positioning ring.

[0008] Preferably, the positioning mechanism comprises a positioning ring which is arranged between the lock sleeve and the lock core and connected to the lock sleeve, the positioning ring constitutes a positioning part of the positioning mechanism, and the lock core constitutes another positioning part cooperating with the positioning ring.

[0009] Preferably, the lock sleeve includes a sleeve surrounding the lock core and a base plate connected to one end of the sleeve. The lock core includes a lock head arranged in the lock sleeve and a lock body connected to the lock tongue through the base plate. The positioning ring is sleeved on the lock body and located in the sleeve. The lock head, spring, positioning ring and base plate are arranged in sequence along the axial direction of the lock body.

[0010] Preferably, a slide groove parallel to the axis is provided on the circumference of the lock body, and a guide block inserted into the slide groove and slidably fitted is provided on the ring wall of the inner ring of the positioning ring.

[0011] Preferably, the positioning ring is provided with two jacking parts evenly distributed along the circumferential direction, and the two jacking parts are respectively protrusions arranged on the side of the positioning ring toward the bottom plate, and the bottom plate of the locking sleeve is provided with four venting parts evenly distributed along the circumferential direction, and the four venting parts are respectively grooves arranged in the bottom plate.

[0012] Preferably, the lock sleeve includes a sleeve surrounding the lock core and a base plate connected to one end of the sleeve. The lock core includes a lock head arranged in the lock sleeve and a lock body connected to the lock tongue through the base plate. The positioning ring is installed in the sleeve, and the lock body passes through the positioning ring. The lock head, the positioning ring, the spring and the base plate of the lock sleeve are arranged in sequence along the axial direction of the lock body.

[0013] Preferably, a guide rail parallel to the axis of the lock body is provided on the inner wall of the lock sleeve, and a guide groove slidably fitted on the guide rail is provided on the ring wall of the outer ring of the positioning ring.

[0014] Preferably, the positioning ring is provided with two circumferentially evenly distributed lifting portions, the two lifting portions are respectively protrusions arranged on the side of the positioning ring facing the lock head, and the side of the lock head facing the positioning ring is provided with four circumferentially evenly distributed yielding portions, the four yielding portions are respectively grooves arranged on the lock head.

[0015] Preferably, a clamping piece cooperating with the lock sleeve is provided on one end of the lock body passing through the bottom plate, and the spring can respectively drive the lock head and the lock sleeve at both ends to move away from each other, so that the lock sleeve abuts against the clamping piece of the lock body to limit the lock sleeve and the lock head.

[0016] Preferably, the lock tongue includes a connecting seat connected to the lock core, and two lock ears symmetrically arranged on both sides of the connecting seat, and the lock plate is provided with a locking groove that cooperates with the lock tongue, the locking groove is rectangular and the length of the locking groove is greater than the distance between the ends of the two lock ears, the width of the locking groove is greater than the width of the connecting seat, and less than the distance between the ends of the two lock ears.

[0017] Preferably, the lock head is installed on the inner side of the lock sleeve, and an embedded groove is provided on the circumference of the lock head, and a sealing member cooperating with the inner wall of the lock sleeve is provided in the embedded groove.

[0018] Preferably, both left and right rotations of the lock core can drive the lock tongue to rotate to a position for locking and unlocking with the lock plate.

[0019] The lock device created by the present invention can be used in a self-pressure relief switch cabinet to realize the self-pressure relief of the switch cabinet. The lock sleeve is driven to approach the lock tongue along the axial direction of the lock core by a spring, and two positioning parts of the positioning mechanism are stacked along the axial direction of the lock core at one end of the spring, so that the spring can simultaneously drive the positioning mechanism and the lock sleeve to work, so that when the spring drives the positioning mechanism, the two positioning parts are close to each other to reliably position the lock core. When the spring drives the lock sleeve, it can not only drive the lock sleeve to drive the door panel to close on the cabinet more reliably, so that the cabinet has excellent sealing performance and prevents impurities such as dust and water vapor from entering the cabinet to affect the operation of the switch electrical appliance, but also when the switch electrical appliance in the cabinet generates high-pressure gas, the door panel can be automatically opened by compressing the spring, so that the high-pressure gas in the cabinet is automatically discharged, and after the high-pressure gas is discharged, the spring releases energy to drive the door panel to automatically close, thereby realizing automatic pressure relief of the switch cabinet.

[0020] In addition, multiple yielding portions can be provided along the circumference of the lock core, that is, the lock tongue can have multiple locking and unlocking positions, and there is no need to limit the rotation direction of the lock core. It can be used for both left-opening and right-opening doors.

[0021] An automatic pressure relief switch cabinet comprises a cabinet body, a door panel and a lock device for locking the cabinet body and the door panel. The lock plate of the lock device is mounted on the door panel, and the lock body device is mounted on the door panel.

[0022] Preferably, when high-pressure gas appears in the switch cabinet, the high-pressure gas pushes the door panel, driving the lock sleeve of the lock to compress the spring, so that the door panel moves away from the cabinet body and releases the high-pressure gas in the cabinet body; when the pressure in the cabinet body drops, the spring pushes the lock sleeve to move toward the lock tongue, and the lock sleeve drives the door panel to close with the cabinet body again.

[0023] The automatic pressure relief switch cabinet created by the present invention has a lock cylinder 100 that has a bidirectional rotation direction. Regardless of whether the door panel 520 opens to the left or the right, the operator can simply rotate the lock cylinder 100 according to the daily operating habits. Whether it is left-handed or right-handed, the door panel 520 can be opened, which not only avoids trouble for the operator, but also has the function of automatic pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a lock body device according to an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a lock plate according to an embodiment of the present invention;

[0026] Figure 3 It is the position where the lock tongue and the lock plate are unlocked in the embodiment of the present invention;

[0027] Figure 4 It is the position of the lock tongue when the lock tongue of the embodiment of the present invention rotates from the unlocking position to the locking position;

[0028] Figure 5 It is the position where the lock tongue and the lock plate are locked in the embodiment of the present invention;

[0029] Figure 6 It is the position where the door panel is opened to release pressure when the lock tongue and the lock plate are locked in the embodiment of the present invention;

[0030] Figure 7 It is a partial cross-sectional view of a lock body device according to an embodiment of the present invention;

[0031] Figure 8 It is a cross-sectional view of a lock body device according to an embodiment of the present invention;

[0032] Fig. 9 This is an exploded view of a lock device according to an embodiment of the present invention;

[0033] Fig.10 is another exploded view of the lock device of the embodiment of the present invention;

[0034] Fig.11This is another exploded view of the lock device of the embodiment of the present invention;

[0035] Fig.12 It is a structural schematic diagram of the lock core in the first embodiment of the present invention;

[0036] Fig.13 It is a schematic diagram of the structure of the positioning ring in the first embodiment of the present invention;

[0037] Fig.14 It is a partial cross-sectional view of the lock sleeve in the first embodiment of the present invention;

[0038] Fig.15 is a cross-sectional view of the lock sleeve in the first embodiment of the present invention;

[0039] Fig.16 is a top view of the lock sleeve in the first embodiment of the present invention;

[0040] Fig.17 It is a bottom view of the lock sleeve in the first embodiment of the present invention;

[0041] Fig.18 It is a structural schematic diagram of the lock tongue in the first embodiment of the invention;

[0042] Fig.19 It is a structural schematic diagram of the lock core in the second embodiment of the present invention;

[0043] Fig. 20 It is a schematic diagram of the structure of the positioning ring in the second embodiment of the present invention;

[0044] Fig.21 It is a partial cross-sectional view of the lock sleeve in the second embodiment of the present invention;

[0045] Fig. 22 It is a top view of the lock sleeve in the second embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following is combined with Figures 1 to 22 The following embodiments are provided to further illustrate the specific implementation of the lock created by the present invention. The lock created by the present invention is not limited to the description of the following embodiments.

[0047] like Figure 6-8 As shown, the switch cabinet includes a cabinet body 510 and a door panel 520. The lock device created by the present invention includes a lock body device ( Figure 1 ) and a lock plate 530 ( Figure 2 );

[0048] The lock body device includes a lock sleeve 400 installed on the door panel 520, 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 and is connected to the lock tongue 200. The lock core 100 is rotated to drive the lock tongue 200 to lock and unlock with the lock plate 530. The spring 310 pushes the lock sleeve 400 toward the lock tongue 200 along the axial direction of the lock core 100. A positioning mechanism 300 for positioning the lock core 100 is provided in the lock sleeve 400. The positioning mechanism 300 includes two The two positioning parts are respectively connected to the lock core 100 and the lock sleeve 400, and the two positioning parts are stacked along the axial direction of the lock core 100 at one end of the spring 310. The lock core 100 drives the lock tongue 200 and one of the positioning parts to rotate respectively. One of the positioning parts is provided with a lifting part 330, and the other positioning part is provided with at least two giving parts 340 for accommodating the lifting part 330 along the circumference of the lock core 100, and the at least two giving parts 340 correspond to the positions of the lock tongue 200 when locked and unlocked; refer to Figure 3 When the lock tongue 200 is rotated to the position of locking and unlocking with the lock plate 530, the spring 310 pushes the lifting part 330 on the positioning part into the yielding part 340 on the other positioning part, so that the two positioning parts of the positioning mechanism 300 are close to each other to limit the lock cylinder 100;

[0049] See also Figure 4 When the lock core 100 drives the lock tongue 200 to the position of locking and unlocking with the lock plate 530, the lifting part 330 compresses the spring 310 and is misaligned with the yielding part 340, so that the two positioning parts of the positioning mechanism 300 are away from each other, which is convenient for rotating the lock core 100;

[0050] See also Figure 5 When the lock tongue 200 is locked with the lock plate 530 in the cabinet 510 and high pressure gas appears in the cabinet 510, the high pressure gas pushes the door plate 520 to drive the lock sleeve 400 to compress the spring 310, so that the door plate 520 is away from the cabinet 510 by a distance H ( Figure 6 ), release the high pressure gas in the cabinet 510;

[0051] When the pressure in the cabinet 510 decreases, 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 with the cabinet 510 again, returning to the closed position. Figure 5 Location.

[0052] The lock device created by the present invention can be used in a self-depressurizing switch cabinet to realize the self-depressurization of the switch cabinet. The lock sleeve 400 is driven to approach the lock tongue 200 along the axial direction of the lock core 100 by the spring 310, and the two positioning parts of the positioning mechanism 300 are stacked along the axial direction of the lock core 100 at one end of the spring 310, so that the spring 310 can simultaneously drive the positioning mechanism 300 and the lock sleeve 400 to work, so that when the spring 310 drives the positioning mechanism 300, the two positioning parts are close to each other to reliably position the lock core 100, and the spring 310 drives the lock sleeve 400 to move. 00, not only can the lock sleeve 400 be driven to drive the door panel 520 to close on the cabinet 510 more reliably, so that the cabinet 510 has excellent sealing performance, and dust, water vapor and other impurities are prevented from entering the cabinet 510 to affect the operation of the switch electrical appliance, but also when the switch electrical appliance in the cabinet 510 generates high-pressure gas, the door panel 520 can be automatically opened by compressing the spring 310, so that the high-pressure gas in the cabinet 510 is automatically discharged, and after the high-pressure gas is discharged, the spring 310 releases energy to drive the door panel 520 to close automatically, so as to realize the automatic pressure relief of the switch cabinet. In addition, the yielding portion 340 can be provided with multiple positions along the circumference of the lock core 100, that is, the lock tongue 200 can have multiple locking and unlocking positions, and there is no need to limit the rotation direction of the lock core 100, and it can be used for both left-opening and right-opening doors.

[0053] Figure 3-18 and Figure 19-22 Two preferred embodiments of the present invention are shown respectively, the positioning mechanism 300 includes a positioning ring 320 disposed between the lock sleeve 400 and the lock core 100, and the positioning ring 320 constitutes a positioning part of the positioning mechanism 300, and the lock core 100 and the lock sleeve 400 respectively constitute another positioning part that cooperates with the positioning ring 320 in the two embodiments, which can be understood as the positioning part being integrally formed with the lock core 100 or the lock sleeve 400. Of course, the positioning part can also be independently installed on the lock core 100 or the lock sleeve 400 and cooperate with the positioning ring 320, which all belong to the protection scope of the present invention.

[0054] Embodiment 1

[0055] like Figure 12-14 As shown, the positioning ring 320 of this embodiment is connected to the lock core 100 , and the lock sleeve 400 constitutes another positioning portion that cooperates with the positioning ring 320 .

[0056] The lock sleeve 400 is a cylindrical structure with one end open. 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 in an annular structure. The lock core 100 includes a lock head 120 arranged 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 sleeved on the lock body 110 and located in the sleeve 410. The lock head 120, the spring 310, the positioning ring 320 and the bottom plate 420 are sequentially arranged along the axial direction of the lock body 110. At one end of the lock body 110 passing through the bottom plate 420, the lock head 120, the spring 310, the positioning ring 320 and the bottom plate 420 are sequentially arranged along the axial direction of the lock body 110. A clamping piece 600 is provided on the lock body 110 to limit the lock sleeve 400. One end of the spring 310 is connected to the lock head 120. The other end of the spring 310 is connected to 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 both ends to move away from each other, so that the lock sleeve 400 is pressed against the clamping piece 600 of the lock body 110 to limit the lock sleeve 400 and the lock head 120. At the same time, the positioning piece 320 arranged between the spring 310 and the bottom plate 420 is pressed against the bottom plate 420 of the lock sleeve 400 under the drive of the spring 310.

[0057] The high-pressure gas in the switch cabinet can push the door panel 520, drive the lock sleeve 400 installed on the door panel 520 away from the clamp 600 and compress the spring 310. After the high-pressure gas is discharged, the spring 310 releases energy and drives the lock sleeve 400 to drive the door panel 520 to close again. Even if there is no high-pressure gas, the door panel 520 is driven to close on the cabinet body 510 by the spring 310. The driving force of the spring 310 is not only greater, so that the door panel 520 can be more forcefully locked on the cabinet body 510, effectively improving the airtightness of the switch cabinet, but also even if the switch cabinet vibrates, the driving force of the spring 310 can be automatically adjusted to ensure that the door panel 520 can be reliably and continuously closed.

[0058] The clamp 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 core 100, the lock sleeve 400 and the spring 310, but also keeps the spring 310 compressed to a certain extent. Of course, the clamp 600 may not be provided, and the distance between the lock sleeve 400 and the lock head 120 may be limited by the cooperation between the cabinet 510 and the door panel 520, or the cooperation between the lock tongue 200 and the lock sleeve 400. As long as the spring 310 is kept compressed to a certain extent between the lock sleeve 400 and the lock head 120, it belongs to the protection scope of the invention. In addition, the clamp 600 may also be provided at other positions, such as at the opening position of the lock sleeve 400, to limit the lock head 120 from moving in the direction away from the lock sleeve 400.

[0059] Furthermore, since the spring 310 is always kept in a compressed state, the positioning piece 320 arranged between the spring 310 and the bottom plate 420 and connected to the lock body 110 is always pressed against the bottom plate 420 of the lock sleeve 400 under the drive of the spring 310, and the lock body 110 is limited by the cooperation between the positioning piece 320 and the bottom plate 420 of the lock sleeve 400.

[0060] Specifically, two slide grooves 321 arranged parallel to the axis are provided on the circumference of the lock body 110, and the two slide grooves 321 are relatively arranged on both sides of the lock body 110, the ring wall of the inner ring of the positioning ring 320 is provided with two guide blocks 322 respectively inserted into the slide grooves 321 for sliding cooperation, and the positioning ring 320 is provided with two lifting portions 330 evenly distributed along the circumferential direction, and the two lifting portions 330 are respectively protrusions arranged on the side of the positioning ring 320 facing the bottom plate 420, and the bottom plate 420 of the lock sleeve 400 is provided with four yielding portions 340 evenly distributed along the circumferential direction, and the four yielding portions 340 are respectively grooves arranged in the bottom plate 420. After the lifting portion 330 enters the yield portion 340, the spring 310 will push the lifting portion 330 to remain in the yield portion 340, and the resistance between the yield portion 340 and the lifting portion 330 will limit the lock cylinder 100 and prevent the lock cylinder 100 from rotating autonomously. Only when the lock cylinder 100 is rotated manually can the lifting portion 330 overcome the resistance with the yield portion 340 and slide out. When the lifting portion 330 slides out of the yield portion 340, the lifting portion 330 lifts the positioning ring 320 and compresses the spring 310, which will not affect the manual rotation of the lock cylinder 100.

[0061] One advantage of the positioning mechanism 300 of this embodiment is that the positioning ring 320 is inserted into the slide groove 321 through the guide block 322 and limited along the circumferential direction, so that the positioning ring 320 can move in a direction parallel to the axis of the lock core 100. Whether the lifting part 330 slides out of the yielding part 340 to lift the positioning ring 320, or the door plate 520 is lifted 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, without interfering with the actions of other mechanisms, and without problems such as skewing or jamming. It can be understood that the positions of the guide block 322 and the slide groove 321 can also be interchanged. After the interchange, the guide block 322 is set on the convex strip outside the circumference of the lock body 110, and the length direction is parallel to the axis of the lock core 100, and the slide groove 321 is set on the inner ring wall of the positioning ring 320 and slides on the convex strip, which all belong to the protection scope of the invention.

[0062] Another advantage of the positioning mechanism 300 of this embodiment is that the yielding portion 340 and the lifting portion 330 are respectively a groove and a protrusion structure, 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 core 100, so that the lock core 100 can work in both left and right rotations. The lock core 100 can rotate out of the current yielding portion 340 and then rotate into another group of yielding portions 340, driving the lock tongue 200 to rotate to the position of locking and unlocking with the lock plate 530. It can be understood that the positions of the yielding portion 340 and the lifting portion 330 can also be interchanged. After the interchange, the lifting portion 330 is a protrusion set on the bottom plate 420, and the yielding portion 340 is a groove set on the positioning ring 320, both of which belong to the protection scope of the invention. In addition, in this embodiment, two lifting parts 330 cooperate with four giving way parts 340, two giving way parts 340 symmetrically arranged on both sides of the lock core 100 correspond to the locked position of the lock tongue 200, and the other two giving way parts 340 symmetrically arranged on the other two sides of the lock core 100 correspond to the unlocked position of the lock tongue 200, and the symmetrical arrangement of the two lifting parts 330 has the characteristic of good balance. Of course, the number of giving way parts 340 and lifting parts 330 can also be changed:

[0063] For example, when the lock core rotates 360 degrees, the number of the yielding portions 340 is 4 and symmetrically distributed in the circumferential direction, and the number of the lifting portions 330 is less than or equal to the number of the yielding portions 340, but not less than 1;

[0064] For example, when the lock core rotates 180 degrees, the number of the yielding portions 340 is at least 3, and two of them are distributed at 180 degrees, and the number of the lifting portions 330 is less than or equal to the number of the yielding portions 340, but not less than 1;

[0065] For example, when the lock core rotates 90 degrees, the number of the yielding portions 340 is at least 2, and two of them are distributed at 90 degrees, and the number of the lifting portions 330 is less than or equal to the number of the yielding portions 340, but not less than 1.

[0066] like Fig.18 The structure of the lock tongue 200 is shown. Figure 2 The lock plate 530 cooperates with the lock tongue 200 of the present embodiment, and the lock tongue 200 has a symmetrical structure. The lock tongue 200 includes a connecting seat 210 connected to the lock core 100, and two lock ears 220 symmetrically arranged on both sides of the connecting seat 210. The lock plate 530 is provided with a locking notch 534 that cooperates with the lock tongue 200. The locking notch 534 is rectangular, and the length and width of the locking notch 534 correspond to the lock tongue 200 respectively. The length of the locking notch 534 is greater than the distance between the ends of the two lock ears 220. When the lock tongue 200 rotates to a direction parallel to the length of the locking notch 534, it is the unlocking position of the lock tongue 200. The locking notch 534 is used to avoid the connecting seat 210 and the locking members 200 on both sides.

[0067] The width of the locking slot 534 is greater than the width of the connecting seat 210 and is less than the distance between the ends of the two locking ears 220. When the lock tongue 200 rotates to a direction perpendicular to the length of the locking slot 534, the lock plate 530 corresponds to the edge of the locking slot 534 to limit the lock ear 220, and the lock core 100 cannot drive the lock tongue 200 to leave the lock plate 530, thereby locking the door panel 520 and the cabinet body 510. At this time, the lock core 100 can drive the lock tongue 200 to rotate back to a direction parallel to the length of the locking slot 534, so as to drive the lock tongue 200 to leave the lock plate 530, so that the door panel 520 is in an unlocked state. It is understood that the lock tongue 200 can also be an asymmetric structure, and even if only one side is provided with a lock ear 220, it can also be limited with the lock plate 530. However, by limiting the position with two lock ears 220 symmetrically arranged on both sides, not only the balance is better, but also the lock of this embodiment can be opened or locked by 180 degrees left rotation or 180 degrees right rotation, and will not be inconsistent with the opening direction of the left or right door. In addition, the locking notch 534 can also be in other shapes, such as an ellipse or a square, and the lock tongue 200 can also be passed through when the diagonal direction of the square is parallel to the length direction of the lock tongue 200.

[0068] Embodiment 2

[0069] like Figure 19-22 As shown, the positioning ring 320 of this embodiment is arranged at the other end of the spring 310 in the first embodiment and connected to the lock sleeve 400, and the lock head 120 constitutes another positioning portion cooperating with the positioning ring 320.

[0070] Specifically, the lock sleeve 400 is a cylindrical structure with one end open, 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 in an annular structure, the lock core 100 includes a lock head 120 arranged in the lock sleeve 400, and a lock body 110 connected to the lock tongue 200 through the bottom plate 420, the positioning ring 320 is installed 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 arranged along the axial direction of the lock body 110, and the lock body 110 passes through the bottom plate 420. A clamping piece 600 is provided on one end of the bottom plate 420 to limit the lock sleeve 400. 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 drive the lock head 120 and the lock sleeve 400 at both ends to move away from each other, so that the lock sleeve 400 is pressed against the clamping piece 600 of the lock body 100 to limit the lock sleeve 400 and the lock head 120. At the same time, the positioning piece 320 arranged between the spring 310 and the lock head 120 is pressed against the lock head 120 under the drive of the spring 310. The function of the clamping piece 600 in this embodiment and the principle of releasing the high-pressure gas in the switch cabinet are the same as those in the first embodiment.

[0071] Furthermore, the inner wall of the lock sleeve 400 is provided with two guide rails 323 arranged parallel to the axis of the lock body 110, and the two guide rails 323 are relatively arranged on both sides of the lock body 110, and the ring wall of the outer ring of the positioning ring 320 is provided with two guide grooves 324 respectively slidably fitted on the guide rails 323, and the positioning ring 320 is provided with two circumferentially evenly distributed lifting portions 330, and the two lifting portions 330 are respectively protrusions arranged on the side of the positioning ring 320 facing the lock head 120, and the side of the lock head 120 facing the positioning ring 320 is provided with four circumferentially evenly distributed yielding portions 340, and the four yielding portions 340 are respectively grooves arranged on the lock head 120.

[0072] 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 part 330 and the yielding part 340 of this embodiment can be interchanged, and the positions of the guide rails 323 and the guide grooves 324 can also be interchanged. Moreover, the number of yielding parts 340 and lifting parts 330 can be changed, and the number of guide rails 323 and guide grooves 324 can also be changed. As mentioned above, the lock core can rotate 360 ​​degrees, 180 degrees and 90 degrees, etc., which will not be repeated here; the number of guide rails 323 and guide grooves 324 needs to ensure one-to-one correspondence, but at least one group, or multiple groups, which can be symmetrically distributed or asymmetrically distributed, all of which belong to the protection scope of the invention.

[0073] Combination Figure 7-11 and Figure 12-18 The assembly process and specific structure of the first embodiment are shown respectively.

[0074] like Fig.12 As shown, the lock core 100 includes a lock body 110 and a lock head 120 arranged at one end of the lock body 110, the other end of the lock body 110 is connected to the lock tongue 200, the lock head 120 is installed on the inner side of the lock sleeve 400, and an embedded groove 122 is provided on the circumference of the lock head 120, and a sealing member 123 is provided in the embedded groove 122 to cooperate with the inner wall of the lock sleeve 400 (see Figure 7-8 ), the diameter of the lock head 120 is larger than the lock body 110, the middle of the inner side surface of the lock head 120 is connected to the lock body 110, and a ring-shaped lock head support surface 121 is formed on the inner side surface of the lock head 120, and two slide grooves 321 are arranged parallel to the axis of the lock body 110 on the circumference of the side surface of the lock body 110, and the two slide grooves 321 are symmetrically arranged on both sides of the lock body 110, and the slide grooves 321 are used to guide the positioning ring 320, and the other end of the lock body 110 connected to the lock head 120 is provided with a rectangular lock tongue mounting boss 111, and the end surface of the lock tongue mounting boss 111 is provided with a lock tongue mounting hole 112, and the lock tongue mounting boss 111 can also be elliptical, or the two sides of the rectangular symmetrical sides are changed into rounded edges. See Figure 9-10, 18, the lock tongue 200 includes a connecting seat 210 and two lock ears 220 symmetrically arranged on both sides of the connecting seat 210, the connecting seat 210 is provided with a lock tongue mounting groove 113 which is sleeved around the lock tongue mounting boss 111 and is limited in position, and a lock tongue through hole 114 corresponding to the lock tongue mounting hole 112 is provided at the bottom of the lock tongue mounting groove 113, and a mounting screw 115 passes through the lock tongue through hole 114 and is connected with the lock tongue mounting hole 112 to fix the lock tongue 200 to the lock body 110, and a card slot 116 for connecting the clamp 600 is provided on the circumference of the lock body 110, and after the clamp 600 is fixed to the card slot 116, the lock sleeve 400 is limited, and the length of the spring 310 clamped between the lock sleeve 400 and the lock head 120 is further limited, so as to ensure that the spring 310 is always compressed to a certain extent, so that the spring force of the spring 310 can work quickly and effectively.

[0075] like Figure 14-17 As shown, 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 in an annular structure. The other end of the sleeve 410 is open and is provided with a lock sleeve head 430 extending radially outward and cooperating with the door panel 520. The middle part of the bottom plate 420 is provided with a lock sleeve through hole 421 for avoiding the lock body 110. The side surface of the bottom plate 420 facing the inner side of the sleeve 410 is a bearing surface 421 for cooperating with the positioning ring 320. Four grooves evenly distributed along the circumference are provided on the bearing surface 421 for constituting a yielding portion 340. The yielding portion 340 on the bearing surface 421 can also be interchangeable with the lifting portion 330 on the positioning ring 320, and the number of the yielding portions 340 can also be changed to ensure that they correspond to the locked and unlocked positions of the lock tongue 200. No further details are given here.

[0076] Four locking sleeve planes 411 are provided on the outer circumference of the sleeve 410, of which two locking sleeve planes 411 are symmetrically arranged on both sides, and the other two locking sleeve planes 411 are symmetrically arranged on the remaining two sides, that is, the four planes are symmetrically arranged with the axis center of the sleeve 410, and two of the symmetrically arranged locking sleeve planes 411 are respectively provided with locking sleeve fixing grooves 412 for fixing the locking sleeve 400, and the other two locking sleeve planes 411 can be made from the outer circumference of the sleeve 410 by removing material. Of course, if the material is not removed, the two locking sleeve planes 411 can be not provided. The lock sleeve fixing groove 412 cooperates with the U-shaped clamp. After the lock sleeve 400 passes through the door panel 520, the lock sleeve head 430 at the end of the lock sleeve 400 is located on one side of the door panel 520, and the lock sleeve fixing groove 412 is located on the other side of the door panel 520. The elastic legs on both sides of the U-shaped clamp lock the lock sleeve fixing groove 412, and the two sides of the elastic legs respectively abut against the lock sleeve fixing groove 412 and the side walls opposite to the door panel 520, so that the sleeve 430 and the U-shaped clamp clamp the door panel 520 from both sides, respectively, to achieve the lock sleeve 400 fixedly installed on the door panel 520. In addition, the lock sleeve fixing groove 412 may not be set on the lock sleeve plane 411, but may be directly set on the outer circumference of the sleeve 410, which all belong to the protection scope of the invention.

[0077] like Fig.13 As shown, the positioning ring 320 is annularly mounted between the inner side of the sleeve 410 and the outer side of the lock body 110. The positioning ring 320 can rotate along the circumference of the lock body 110 with the lock body 110, and can move along the axial direction of the lock body 110 under the drive of the spring 310 and the lifting part 330. The positioning ring 320 can also be in other shapes, such as a triangle or a square, as long as it does not interfere with the lock sleeve 400 during rotation and movement. The difference here from the second embodiment is that 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 110.

[0078] Two guide blocks 322 are provided on the ring wall of the inner ring of the positioning ring 320, which are respectively slidably matched with the slide groove 321 on the lock body 110. After assembly, it can be ensured that when the lock core 100 is rotated, the positioning ring 320 keeps rotating synchronously with the lock core 100. The cooperation between the guide blocks 322 and the slide groove 321 not only plays a guiding role, but also constrains the positioning ring 320 and the lock core 100 in the circumferential direction, ensuring that the positioning ring 320 and the lock core 100 rotate synchronously. It can be understood that the number of guide blocks 322 and the slide groove 321 can be changed, and multiple guide blocks 322 can also be arranged asymmetrically, preferably, the angle between two adjacent guide blocks 322 is less than 180 degrees. The side surface of one side of the positioning ring 320 cooperates with the spring 310, and the side surface of the other side of the positioning ring 320 is provided with two lifting parts 330. As mentioned above, the lock core can rotate 360 ​​degrees, 180 degrees and 90 degrees, etc., which will not be repeated here.

[0079] like Figure 7-11 4, and then the lock core 100 is locked in the lock sleeve 400. In the assembly process shown, the gasket 900 is first sleeved on the sleeve 410 corresponding to one end of the lock sleeve head 430, and then the seal 123, the spring 310 and the positioning ring 320 are sequentially sleeved on the lock core 100. The guide block 322 on the positioning ring 320 should match the slide groove 321 on the lock body 110. Then, the lock core 100 is inserted into the sleeve 410. During the insertion, the two lifting parts 330 of the positioning ring 320 are matched with the two yielding parts 340 on the bottom plate 420. At the same time, a certain thrust is applied to the lock head 120 of the lock core 100. After overcoming the resistance of the spring 310, the slot 116 on the lock body 110 for connecting the card 600 passes through the bottom plate 420, and then the card 600 is inserted into the matching slot 104. At this time, the force applied to the lock head 120 is released, and the lock core 100 is restricted on the lock sleeve 400. Then the lock tongue 200 is put on the lock core 100, and finally the lock tongue 200 and the lock core 100 are connected together by installing screws 115 to prevent the lock core 100 from falling off. Preferably, the connection direction of the two lock ears 220 on the lock tongue 200 is arranged parallel to the direction of the slot 124 on the lock head 120, and the position of the lock ear 220 can be indicated by the direction of the slot 124. Of course, the connection direction of the two lock ears 220 and the direction of the slot 124 can also be at a certain angle.

[0080] like Fig.18 As shown, the lock tongue 200 includes a connection seat 210 and two lock ears 220 symmetrically arranged on both sides of the connection seat 210. The connection seat 210 is a cylindrical structure, and the two lock ears 220 are arc-shaped structures bent toward one side of the lock core 100 ( Fig.11 ), and recesses are formed on the two lock ears 220 on one side away from the lock core 110, the top positions of the two lock ears 220 are limited with the lock plate 530, and the two sides of the two lock ears 220 can play a guiding role when they are inserted into the lock plate 530 to reduce friction, and the recesses on the other side of the two lock ears 220 can not only save materials, but also strengthen the strength of the lock ears 220. Of course, the lock ears 220 may not be recessed.

[0081] The connecting seat 210 is provided with a lock tongue mounting groove 113 which is sleeved around the lock tongue mounting boss 111 and limitedly matched, and a lock tongue through hole 114 corresponding to the lock tongue mounting hole 112 is provided at the bottom of the lock tongue mounting groove 113, and the central axes of the lock tongue mounting hole 112 and the lock tongue through hole 114 coincide with each other, and the shape of the mounting groove 113 matches the shape of the lock tongue mounting boss 111, and the bottom surface of the mounting groove 113 fits with the end surface of the lock tongue mounting boss 111, and the lock core 100 drives the lock tongue 200 to rotate synchronously when rotating.

[0082] like Figure 2As shown, the lock plate 530 includes a first side plate 531 and a second side plate 532 that are relatively arranged, and a connecting plate 533 connected between one end of the first side plate 531 and the second side plate 532, and the first side plate 531 is provided with a lock plate mounting hole 535 connected to the cabinet body 510, and the connecting plate 533 is provided with a locking groove 534 that cooperates with the lock tongue 200.

[0083] like Figure 3 As shown, when the door panel 520 is closed or a certain pressure is applied to the lock head 120, the lock ear 220 is reduced to a certain distance from the connecting plate 533, or exceeds 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. However, the lifting portion 330 on the positioning ring 320 is limitedly engaged with the yielding portion 340 of the lock sleeve 400 under the drive of the spring 310, thereby forming a resistance to prevent the lock cylinder 100 from rotating.

[0084] like Figure 4 As shown, when the rotational force is further increased to overcome the friction between the yielding portion 340 and the lifting portion 330, the lifting portion 330 slides out of the yielding portion 340 and compresses the spring 310, and the yielding portion 340 contacts the bearing surface 421 on the bottom plate 420, and at the same time, the gap between the bearing surface 421 and the positioning ring 320 will increase.

[0085] like Figure 5 As shown, the lock cylinder 100 continues to rotate in the same direction. When the lifting portion 330 on the positioning ring 320 reaches the next yielding portion 340, the spring 310 releases its elastic force, and the lifting portion 330 is pushed into the yielding portion 340 again. At this time, the lock tongue reaches the locked position, and the door panel 520 is locked in the closed position. Whether it is operated clockwise or counterclockwise, it can be switched between the two states, and the lock cylinder 100 will be accurately positioned when the door lock tongue 200 reaches the locked or unlocked position. When the lock cylinder 100 is positioned, due to the friction between the yielding portion 340 and the lifting portion 330, a small rotation force cannot rotate the lock cylinder 100, thereby achieving a certain anti-misoperation function. In general, the position state of the lock tongue 200 can be quickly identified by the slot direction of the lock head 120. When the door lock is in the middle position between opening and closing, the size of the gap D between the positioning ring 320 and the bearing surface 421 will increase.

[0086] The switch cabinet of the present invention adopts the lock of the present invention as the door lock, and can realize the conversion of two positions by left or right rotation, and has a positioning structure in each working position to ensure the accuracy of each position. At the same time, a spring structure is added to the door lock, which can effectively release the pressure when the pressure inside the switch cabinet is high while ensuring the locking force of the door lock. The door lock designed by this invention can achieve the following advantages:

[0087] 1. When the door lock reaches the closed and open positions, it can be positioned automatically without relying on manual feeling;

[0088] 2. No manual pressing is required, and unlocking can be done only by rotational force, which reduces the work done by manpower. The force can be adjusted by increasing the force arm of the rotation key during rotation;

[0089] 3. The functions of the door lock left-hand and right-hand operations are exactly the same, which can meet everyone's operating needs;

[0090] 4. When the door panel opens in different directions, the door lock can be used without any adjustment;

[0091] 5. When the door is locked to the open or closed position, it can also effectively prevent further rotation from causing inaccurate position;

[0092] 6. The door lock also has a pressure relief function when it is self-positioning.

[0093] The present invention also provides an automatic pressure relief switch cabinet, including a cabinet body 510, a door panel 520 and the lock device for locking the cabinet body 510 and the door panel 520, wherein the lock plate 530 of the lock device is installed on the door panel 520, and the lock body device is installed on the door panel 520.

[0094] When high-pressure gas appears in the switch cabinet, the high-pressure gas pushes the door panel 520, driving the lock sleeve 400 of the lock to compress the spring 310, so that the door panel 520 moves away from the cabinet 510 and releases the high-pressure gas in the cabinet 510; 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 panel 520 to close with the cabinet 510 again.

[0095] It is understandable that due to the limitation of the space around the switch cabinet, in order to avoid the situation where the door panel 520 cannot be fully opened due to left-opening or right-opening, when the door panel 520 is hinged to the side wall on one side of the cabinet body 510, the door panel 520 is one of the left-opening or right-opening doors, and when the door panel 520 is hinged to the side wall on the other side of the cabinet body 510, the door panel 520 is the other of the left-opening or right-opening doors.

[0096] The automatic pressure relief switch cabinet created by the present invention has a lock cylinder 100 that has a bidirectional rotation direction. Regardless of whether the door panel 520 opens to the left or the right, the operator can simply rotate the lock cylinder 100 according to the daily operating habits. Whether it is left-handed or right-handed, the door panel 520 can be opened, which not only avoids trouble for the operator, but also has the function of automatic pressure relief.

[0097] The above content is a further detailed description of the invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, several simple deductions or substitutions can be made without departing from the concept of the invention, which should be regarded as falling within the scope of protection of the invention.

Claims

1. A lock, characterized in that: The invention comprises a lock plate (530) and a lock body device locked with the lock plate (530), 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) and is connected with a lock tongue (200), the lock core (100) is rotated to drive the lock tongue (200) to lock and unlock with the lock plate (530), the spring (310) pushes the lock sleeve (400) toward the lock tongue (200) along the axial direction of the lock core (100), a positioning mechanism (300) for positioning the lock core (100) is provided 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 connected with the lock core (100) and the lock sleeve (400). The lock core (100) is stacked at one end of a spring (310) along the axial direction of the lock core (100), one of the positioning parts is provided with a lifting part (330), and the other positioning part is provided with at least two giving way parts (340) for accommodating the lifting part (330) along the circumferential direction of the lock core (100), and the at least two giving way parts (340) respectively correspond to the positions of the lock tongue (200) when the lock tongue (200) is locked and unlocked, and the lock core (100) drives the lock tongue (200) and a positioning part to rotate. When the lock tongue (200) rotates to a position locked or unlocked with the lock plate (530), the spring (310) pushes the lifting part (330) on the positioning part into the giving way part (340) on the other positioning part, so that the two positioning parts of the positioning mechanism (300) are close to each other to limit the lock core (100).

2. The lock according to claim 1, characterized in that: The positioning mechanism (300) comprises a positioning ring (320) arranged between the lock sleeve (400) and the lock core (100) and connected to the lock core (100); the positioning ring (320) constitutes a positioning part of the positioning mechanism (300); and the lock sleeve (400) constitutes another positioning part cooperating with the positioning ring (320).

3. The lock according to claim 1, characterized in that: The positioning mechanism (300) comprises a positioning ring (320) arranged between the lock sleeve (400) and the lock core (100) and connected to the lock sleeve (400); the positioning ring (320) constitutes a positioning part of the positioning mechanism (300); and the lock core (100) constitutes another positioning part cooperating 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 core (100) and a bottom plate (420) connected to one end of the sleeve (410); the lock core (100) comprises a lock head (120) arranged in the lock sleeve (400) and a lock body (110) passing through the bottom plate (420) and connected to a lock tongue (200); a positioning ring (320) is sleeved on the lock body (110) and is located in the sleeve (410); the lock head (120), the spring (310), the positioning ring (320) and the bottom plate (420) are arranged in sequence along the axial direction of the lock body (110).

5. The lock according to claim 4, characterized in that: A slide groove (321) parallel to the axis is provided on the circumference of the lock body (110), and a guide block (322) inserted into the slide groove (321) and slidably matched is provided on the inner ring wall of the positioning ring (320).

6. The lock according to claim 4, characterized in that: The positioning ring (320) is provided with two lifting portions (330) evenly distributed along the circumferential direction, and the two lifting portions (330) are respectively protrusions arranged on the side of the positioning ring (320) and facing the bottom plate (420). The bottom plate (420) of the locking sleeve (400) is provided with four circumferentially evenly distributed yielding portions (340), and the four yielding portions (340) are respectively grooves arranged on the bottom plate (420).

7. The lock according to claim 3, characterized in that: The lock sleeve (400) comprises a sleeve (410) surrounding a lock core (100) and a bottom plate (420) connected to one end of the sleeve (410); the lock core (100) comprises a lock head (120) arranged in the lock sleeve (400) and a lock body (110) passing through the bottom plate (420) and connected to a lock tongue (200); a positioning ring (320) is installed 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 arranged in sequence along the axial direction of the lock body (110).

8. The lock according to claim 7, characterized in that: The inner wall of the lock sleeve (400) is provided with a guide rail (323) arranged parallel to the axis of the lock body (110), and the outer ring wall of the positioning ring (320) is provided with a guide groove (324) which is slidably fitted on the guide rail (323).

9. The lock according to claim 7, characterized in that: The positioning ring (320) is provided with two circumferentially evenly distributed lifting portions (330), the two lifting portions (330) are respectively protrusions arranged on the side of the positioning ring (320) and facing the lock head (120), and the side of the lock head (120) facing the positioning ring (320) is provided with four circumferentially evenly distributed yielding portions (340), the four yielding portions (340) are respectively grooves arranged on the lock head (120).

10. The lock according to claim 4 or 7, characterized in that: A clamping piece (600) is provided on one end of the lock body (110) passing through the bottom plate (420) and is matched with the lock sleeve (400) for limiting the position. 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 that the lock sleeve (400) abuts against the clamping piece (600) of the lock body (110) to limit the lock sleeve (400) and the lock head (120).

11. The lock according to claim 1, characterized in that: The lock tongue (200) comprises a connection seat (210) connected to the lock core (100), and two lock ears (220) symmetrically arranged on both sides of the connection seat (210); a locking notch (534) cooperating with the lock tongue (200) is provided on the lock plate (530); the locking notch (534) is rectangular and the length of the locking notch (534) is greater than the distance between the ends of the two lock ears (220); the width of the locking notch (534) is greater than the width of the connection seat (210) and less than the distance between the ends of the two lock ears (220).

12. The lock according to claim 4 or 7, characterized in that: The lock head (120) is installed on the inner side of the lock sleeve (400), and an embedded groove (122) is provided on the circumference of the lock head (120), and a sealing member (123) matching with the inner wall of the lock sleeve (400) is provided in the embedded groove (122).

13. The lock according to claim 1, characterized in that: The lock core (100) can be rotated leftward or rightward to drive the lock tongue (200) to rotate to a position for locking or unlocking with the lock plate (530).

14. An automatic pressure relief switch cabinet, characterized in that: The invention comprises a cabinet (510), a door panel (520) and a lock as described in any one of claims 1 to 13, and is used for locking the cabinet (510) and the door panel (520), wherein the lock plate (530) of the lock is installed on the door panel (520), and the lock body device of the lock is installed on the door panel (520).

15. The automatic pressure relief switch cabinet according to claim 14, characterized in that: When high-pressure gas appears in the switch cabinet, the high-pressure gas pushes the door panel (520) to drive the lock sleeve (400) of the lock to compress the spring (310), so that the door panel (520) moves away from the cabinet (510) and the high-pressure gas in the cabinet (510) is released; when the pressure in the cabinet (510) decreases, the spring (310) pushes the lock sleeve (400) to move toward the lock tongue (200), and the lock sleeve (400) drives the door panel (520) to close with the cabinet (510) again.

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