Tongue lock and isolator

Abstract

The application relates to a rotary tongue lock and isolator, which comprises a lock body suitable for being mounted on a door body, a rotary lock tongue rotatably arranged on the lock body, and a shaft body protruding from the rotary lock tongue; a pressing block suitable for being mounted on a door frame matched with the door body, and a recess for accommodating the shaft body arranged on the pressing block, and the inner wall of the recess is formed with a slope. The rotary tongue lock and isolator designed in the application can convert the rotary motion of the rotary lock tongue into the axial displacement of the lock body through the cooperation of the shaft body and the slope on the pressing block, can exert stable and strong pressing force on the door body, and can guarantee the high sealing property between the door body and the door frame; meanwhile, the telescopic lock tongue arranged on the rotary lock tongue can mechanically block the rotary motion of the rotary lock tongue when the door is not closed, a reliable anti-misoperation interlock is formed, the lock impact and equipment damage caused by misoperation are effectively avoided, and the structural reliability and service life of the whole device are improved.

Description

Technical Field

[0001] This application relates to the field of lock technology, and in particular to a rotary lock and isolator. Background Technology

[0002] Isolators are widely used in biopharmaceutical, chemical, and semiconductor industries. These devices typically require a good seal between their doors and enclosure to maintain a specific internal environment, such as sterile, low-oxygen, negative pressure, or vacuum conditions. Therefore, the locks used to close the doors of these devices not only need to provide reliable locking but also need to apply sufficient and uniform pressure to the door to ensure that the sealing strip is effectively compressed, thereby achieving a high level of airtightness. Utility Model Content

[0003] To address the aforementioned issues, this application provides a rotary latch lock and isolator that combines rotary clamping and mechanical interlocking.

[0004] To achieve the above objectives, in a first aspect, embodiments of this application provide a rotary latch lock, comprising: A lock body, suitable for installation on a door, wherein a rotating bolt is rotatably provided on the lock body, and a shaft protrudes from the rotating bolt; A clamping block, suitable for installation on a door frame that mates with the door body, the clamping block having a groove for accommodating the shaft, the inner wall of the groove being sloped; When the door is closed, the shaft is inserted into the groove when the rotary latch is rotated, and the shaft moves along the slope in the groove, causing the lock body to be displaced relative to the pressing block along the rotating shaft of the rotary latch, so as to press the door body and the door frame together.

[0005] Preferably, the groove is further provided with a stepped surface at the end of the slope, and the stepped surface forms a height difference with the slope; wherein, when the shaft crosses the slope and contacts the stepped surface, the stepped surface limits the shaft to keep the lock body in the pressed position.

[0006] Preferably, the edge of the lock body is provided with a limiting eave, and the pressing block is provided with a stop surface adapted to the limiting eave; wherein, when the limiting eave abuts against the stop surface, it limits the maximum distance that the lock body can move toward the pressing block.

[0007] Preferably, it further includes: A telescopic latch, which is slidably mounted on the lock body; An elastic element, which is connected to the telescopic latch, is used to drive the telescopic latch to move to the extended position; When the telescopic bolt is in the extended position, the telescopic bolt prevents the rotation of the rotary bolt. When the door is closed and comes into contact with the clamping block, the clamping block presses the telescopic latch to overcome the elastic force of the elastic element and move to the retracted position. In the retracted position, the telescopic latch no longer obstructs the rotation of the rotary latch.

[0008] Preferably, the elastic element is a compression spring; the lock body is provided with a slide groove, the telescopic bolt is slidably disposed in the slide groove, the compression spring is disposed in the slide groove, one end of the compression spring is connected to the telescopic bolt, and the other end is supported on the lock body; the compression spring provides the telescopic bolt with elastic force to move toward the extended position.

[0009] Preferably, the telescopic latch has a protruding stop block that extends out of the slide groove; when the telescopic latch is in the extended position, the stop block is located on the rotation path of the rotary latch.

[0010] Preferably, the lock further includes a limiting post, which is disposed on the lock body; a limiting groove is formed on the rotary bolt, and the limiting post extends into the limiting groove to limit the rotation range of the rotary bolt.

[0011] Preferably, the lock also includes a proximity switch, which is disposed on the lock body and / or the clamping block; the proximity switch is used to detect whether the door is closed in place and output a corresponding electrical signal.

[0012] Preferably, it also includes a ball bearing, which is disposed on the rotation path of the rotary latch and is used to provide positioning feedback when the rotary latch rotates to a predetermined position.

[0013] Secondly, embodiments of this application provide an isolator, including a housing, a door frame, and a door body that cooperates with the door frame, as well as a sealing structure disposed between the door body and the door frame, and further including a rotary latch lock as described in any embodiment of the first aspect; wherein, the lock body of the rotary latch lock is mounted on the door body, and the clamping block of the rotary latch lock is mounted on the door frame; when the rotary latch lock is locked, the lock body moves along the rotating shaft of the rotary latch toward the clamping block to drive the door body to press against the sealing structure.

[0014] The rotary latch lock and isolator designed in this application convert the rotational motion of the rotary latch into the axial displacement of the lock body through the cooperation of the shaft and the ramp on the clamping block. This can apply a stable and strong clamping force to the door body, ensuring a high degree of sealing between the door body and the door frame. At the same time, the telescopic latch, which can mechanically block the rotation of the rotary latch when the door is not closed, constitutes a reliable anti-misoperation interlock, effectively avoiding lock impact and equipment damage caused by misoperation, and improving the structural reliability and service life of the overall device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the rotary tongue lock provided in the embodiments of this application.

[0016] Figure 2 yes Figure 1 Top view.

[0017] Figure 3 yes Figure 2 Sectional view at point AA.

[0018] Figure 4 yes Figure 2 Sectional view at BB point Figure 5 This is a schematic diagram of the structure of the clamping block provided in the embodiment of this application.

[0019] Figure 6 This is a schematic diagram of the isolator provided in the embodiments of this application.

[0020] The components include: rotary latch 100, lock body 10, limit eaves 11, slide groove 12, rotary latch 20, limit groove 21, handle 22, shaft 30, pressing block 40, groove 41, ramp 42, step surface 43, stop surface 44, telescopic latch 50, stop block 51, elastic element 60, limit post 70, proximity switch 80, ball catch 90, isolator 200, door body 201, door frame 202, and box body 203. Detailed Implementation

[0021] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0022] Please see the appendix Figures 1 to 6 This application provides a rotary latch 100 and an isolator 200 including the rotary latch 100.

[0023] First, the application environment of the rotary tongue lock 100 in this embodiment will be described. For example... Figure 6As shown, the isolator 200 mainly includes a housing 203, a door frame 202, and a door body 201 that cooperates with the door frame 202, as well as a sealing structure, such as a sealing strip, disposed between the door body 201 and the door frame 202. To ensure the stability of the internal environment of the isolator 200, such as forming a negative pressure vacuum, sufficient pressure needs to be applied to the sealing structure. The rotary latch lock 100 of this application is used to solve this problem. Specifically, the lock body 10 of the rotary latch lock 100 is mounted on the door body 201, while its pressing block 40 is fixedly mounted on the door frame 202. When the rotary latch lock 100 is locked, the lock body 10 moves along the rotating shaft 30 of the rotary latch 20 toward the pressing block 40 to drive the door body 201 to press against the sealing structure, making it easier to form a negative pressure seal between the door body 201 and the door frame 202.

[0024] The specific structure of the rotary tongue lock 100 in this embodiment is described in detail below.

[0025] like Figure 1 As shown, the rotary tongue lock 100 mainly includes a lock body 10 and a pressing block 40.

[0026] like Figure 3 , Figure 4 As shown, the lock body 10 serves as the main body of the lock, and a rotating bolt 20 is rotatably mounted on it. An integrally formed shaft 30 protrudes from the rotating bolt 20. In this embodiment, for ease of operation, the lock body 10 is provided with a handle 22 fixedly connected to the rotating bolt 20. By rotating the handle 22, the rotating bolt 20 can be driven to rotate, causing the shaft 30 to rotate.

[0027] like Figure 3 , Figure 5 As shown, the clamping block 40 serves as a lock seat that cooperates with the lock body 10. It has a groove 41 for accommodating the shaft 30, and the inner wall of the groove 41 forms a slope 42 that cooperates with the shaft 30.

[0028] The working principle of the rotary latch 100 is as follows: When the door 201 is closed, the operator rotates the handle 22, thereby rotating the rotary latch 20, causing the shaft 30 to insert into the groove 41. As the rotary latch 20 continues to rotate, the shaft 30 is forced to slide along the surface of the ramp 42 within the groove 41. Due to the guiding effect of the ramp 42, this rotational sliding process generates an axial force, which drives the entire lock body 10 and the door 201 it is fixed to to translate along the axis of rotation of the rotary latch 20 towards the pressing block 40 and the door frame 202 it is fixed to. This axial displacement generates a uniform pressing force on the sealing structure between the door 201 and the door frame 202, thereby achieving a reliable seal.

[0029] In some embodiments, in order to provide a stable and reliable locking state after being pressed into place, and to prevent the lock from loosening due to vibration or other reasons, such as Figure 3 , Figure 5 As shown, the groove 41 is further provided with a stepped surface 43 at the end of the ramp 42, and the stepped surface 43 forms a height difference with the ramp 42. When the shaft 30 passes the highest point of the ramp 42, it will contact the stepped surface 43. At this time, the stepped surface 43 limits the shaft 30 to keep the lock body 10 in the pressed position.

[0030] In some embodiments, to prevent excessive compression, such as Figure 1 , Figure 2 As shown, the lock body 10 has a protruding limiting eave 11 on its edge, and the pressing block 40 has a stop surface 44 adapted to the limiting eave 11; wherein, when the limiting eave 11 abuts against the stop surface 44, it limits the maximum distance the lock body 10 can move toward the pressing block 40. When the axial displacement of the lock body 10 reaches a preset maximum value, the limiting eave 11 will physically abut against the stop surface 44, thereby precisely limiting the pressing stroke.

[0031] In some embodiments, such as Figure 3 As shown, it also includes a telescopic latch 50 and an elastic element 60. The telescopic latch 50 is slidably mounted on the lock body 10; the elastic element 60 is connected to the telescopic latch 50 and is used to drive the telescopic latch 50 to move to the extended position.

[0032] When the telescopic latch 50 is in the extended position, the end of the telescopic latch 50 will physically block the rotation path of the rotary latch 20, thereby preventing the rotary latch 20 from rotating and preventing the user from turning the handle 22 to perform the locking operation.

[0033] When the door 201 is closed and abuts against the clamping block 40, the clamping block 40 presses against the telescopic latch 50, causing it to overcome the elastic force of the elastic element 60 and move to the retracted position. In the retracted position, the telescopic latch 50 no longer obstructs the rotation of the rotary latch 20, allowing the user to smoothly turn the handle 22 to complete the locking and clamping actions.

[0034] Specifically, in this embodiment, such as Figure 3 As shown, the elastic element 60 is a compression spring. The lock body 10 is provided with a slide groove 12, the telescopic bolt 50 is slidably disposed in the slide groove 12, the compression spring is disposed in the slide groove 12, one end of the compression spring is connected to the telescopic bolt 50, and the other end is supported on the lock body 10; the compression spring provides the telescopic bolt 50 with a spring force to move toward the extended position.

[0035] More specifically, in order to achieve effective blocking, such as Figure 3 As shown, a stop block 51 protrudes from the telescopic latch 50 and extends out of the slide groove 12; when the telescopic latch 50 is in the extended position, the stop block 51 is located on the rotation path of the rotary latch 20, thereby achieving reliable mechanical blocking.

[0036] In some embodiments, such as Figure 3 As shown, it also includes a limiting post 70, which is disposed on the lock body 10; a limiting groove 21 is formed on the rotary latch 20, and the limiting post 70 extends into the limiting groove 21 to limit the rotation range of the rotary latch 20. In this way, the starting and ending positions of the rotation of the rotary latch 20 are respectively limited by the two ends of the limiting groove 21, making the operating range clear at a glance.

[0037] In some embodiments, in order to achieve electrical automation control, such as Figure 3 , Figure 5 As shown, it also includes a proximity switch 80, which is disposed on the lock body 10 and / or the clamping block 40; the proximity switch 80 is used to detect whether the door body 201 is closed in place and outputs a corresponding electrical signal.

[0038] In some embodiments, in order to improve the user's operating experience, such as Figure 4 As shown, it also includes a catch ball 90, which is disposed on the rotation path of the rotary latch 20 and is used to provide positioning feedback when the rotary latch 20 rotates to a predetermined position. That is, when the rotary latch 20 rotates to a predetermined position such as unlocking or locking, the catch ball 90 will cooperate with the recess or surface on the rotary latch 20 to provide a clear sense of position or positioning feedback.

[0039] The rotary latch lock and isolator designed in this application convert the rotational motion of the rotary latch into the axial displacement of the lock body through the cooperation of the shaft and the ramp on the clamping block. This can apply a stable and strong clamping force to the door body, ensuring a high degree of sealing between the door body and the door frame. At the same time, the telescopic latch, which can mechanically block the rotation of the rotary latch when the door is not closed, constitutes a reliable anti-misoperation interlock, effectively avoiding lock impact and equipment damage caused by misoperation, and improving the structural reliability and service life of the overall device.

[0040] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rotary tongue lock, characterized in that, include: A lock body, suitable for installation on a door, wherein a rotating bolt is rotatably provided on the lock body, and a shaft protrudes from the rotating bolt; A clamping block, suitable for installation on a door frame that mates with the door body, the clamping block having a groove for accommodating the shaft, the inner wall of the groove being sloped; When the door is closed, the shaft is inserted into the groove when the rotary latch is rotated, and the shaft moves along the slope in the groove, causing the lock body to be displaced relative to the pressing block along the rotating shaft of the rotary latch, so as to press the door body and the door frame together.

2. The rotary tongue lock according to claim 1, characterized in that, The groove is further provided with a stepped surface at the end of the slope, and the stepped surface forms a height difference with the slope; wherein, when the shaft crosses the slope and contacts the stepped surface, the stepped surface limits the shaft to keep the lock body in the pressed position.

3. The rotary tongue lock according to claim 1, characterized in that, The edge of the lock body is provided with a limiting eave, and the pressing block is provided with a stop surface adapted to the limiting eave; wherein, when the limiting eave abuts against the stop surface, the maximum distance that the lock body moves toward the pressing block is limited.

4. The rotary tongue lock according to claim 1, characterized in that, Also includes: A telescopic latch, which is slidably mounted on the lock body; An elastic element, which is connected to the telescopic latch, is used to drive the telescopic latch to move to the extended position; When the telescopic bolt is in the extended position, the telescopic bolt prevents the rotation of the rotary bolt. When the door is closed and comes into contact with the clamping block, the clamping block presses the telescopic latch to overcome the elastic force of the elastic element and move to the retracted position. In the retracted position, the telescopic latch no longer obstructs the rotation of the rotary latch.

5. The rotary tongue lock according to claim 4, characterized in that, The elastic element is a compression spring; the lock body is provided with a slide groove, the telescopic bolt is slidably disposed in the slide groove, the compression spring is disposed in the slide groove, one end of the compression spring is connected to the telescopic bolt, and the other end is supported on the lock body; the compression spring provides the telescopic bolt with elastic force to move toward the extended position.

6. The rotary tongue lock according to claim 5, characterized in that, The telescopic latch is provided with a stop block that extends out of the slide groove; when the telescopic latch is in the extended position, the stop block is located on the rotation path of the rotary latch.

7. The rotary tongue lock according to claim 1, characterized in that, It also includes a limiting post, which is disposed on the lock body; a limiting groove is formed on the rotary bolt, and the limiting post extends into the limiting groove to limit the rotation range of the rotary bolt.

8. The rotary tongue lock according to claim 1, characterized in that, It also includes a proximity switch, which is disposed on the lock body and / or the clamping block; the proximity switch is used to detect whether the door is closed in place and outputs a corresponding electrical signal.

9. The rotary tongue lock according to claim 1, characterized in that, It also includes a ball bearing, which is disposed on the rotation path of the rotary latch and is used to provide positioning feedback when the rotary latch rotates to a predetermined position.

10. An isolator, comprising a housing, a door frame, and a door body cooperating with the door frame, and a sealing structure disposed between the door body and the door frame, characterized in that, It also includes a rotary latch lock as described in any one of claims 1 to 9; wherein the lock body of the rotary latch lock is mounted on the door body, and the clamping block of the rotary latch lock is mounted on the door frame; when the rotary latch lock is locked, the lock body moves along the rotating shaft of the rotary latch toward the clamping block to drive the door body to press the sealing structure.

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