Self - suction lock applicable to extrusion sealing of box doors or cabinet doors

Abstract

The present invention relates to a self - suction lock applicable to the extrusion sealing of a box door or a cabinet door, which has a first support member, a clamping member, a locking member, a clutch member, a self - suction driving assembly and an unlocking unit. The clamping member is positioned on the first support member and can rotate relatively. The clamping member has a hook, a first tooth and a second tooth. The locking member is directly or indirectly installed on the box body or the cabinet body and is used for hooking with the hook of the clamping member. The clutch member is assembled on the first support member in a rotatable form and is provided with a slot. The slot is used for engaging with the first tooth to establish a pre - locked state and for engaging with the second tooth to establish a locked state. The self - suction driving assembly is used to drive the clamping member to rotate, so that the clamping member changes from the pre - locked state to the locked state. The unlocking unit is used to drive the clutch member to rotate, so that the clutch member is separated from the clamping member to achieve unlocking. The structure is simple, the operation is labor - saving and safe, and it is a self - suction lock applicable to the extrusion sealing of a box door or a cabinet door.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, in particular to a type of lock used to lock a door lined with a gasket or a door jamb lined with a gasket. Background Art

[0002] In existing industrial test chambers or freezers, etc., the tension generated by pulling the door against the door jamb will cause a certain degree of extrusion and sealing force to be established on a generally elastic gasket or O-ring, thereby obtaining a corresponding sealed environment. Currently, the closing and locking of such doors are mainly achieved through a manually operated pinch lock. Since a large reaction force is generated when the gasket or O-ring is extruded, the manual locking operation is quite time-consuming and laborious. Moreover, when unlocking, it is necessary to wait for the air pressure inside the test chamber or freezer to drop to the natural state before the lock can be operated, thus affecting the process of industrial production. Summary of the Invention

[0003] The purpose of the present invention is to provide a self-suction lock suitable for extrusion sealing of a box door or a cabinet door, which can well solve the above technical problems.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A self-suction lock suitable for extrusion sealing of a box door or a cabinet door, which has:

[0006] A first support member for being installed on a box door or a cabinet door;

[0007] A clamping member, which is positioned on the first support member and can rotate relatively. The clamping member has at least a hook, a first tooth, and a second tooth, and the first tooth and the second tooth are arranged in sequence on the rotation track of the clamping member;

[0008] A locking member, which is directly or indirectly installed on a box body or a cabinet body, and the locking member is used for hooking with the hook of the clamping member;

[0009] A clutch member, which is assembled on the first support member in a rotatable form and is supported by an elastic system. A clamping groove is provided on the clutch member. The clamping groove is used for clamping with the first tooth to establish a pre-locked state, and for clamping with the second tooth to establish a locked state. The hook is hooked with the locking member in both the pre-locked state and the locked state;

[0010] A self-suction driving assembly, which is assembled on the first support member and is used for driving the clamping member to rotate, so that the clamping member changes from the pre-locked state to the locked state;

[0011] The unlocking unit is assembled on the first support member and is used to drive the clutch member to rotate, so that the clutch member is separated from the clamping member to achieve unlocking. The unlocking states include a semi-open unlocking state and a fully-open unlocking state. The semi-open unlocking state is the switching of the engagement between the second engaging teeth and the card slot to the engagement between the first engaging teeth and the card slot. The fully-open unlocking state is that both the first engaging teeth and the second engaging teeth are disengaged from the card slot.

[0012] Further, the self-suction drive assembly includes a motor, a transmission gear set, and a power gear. The power gear is assembled on the rotating shaft together with the clamping member, and a first torsion spring is assembled on the rotating shaft. The power output by the motor is transmitted to the power gear through the transmission gear set, and the power gear drives the clamping member to rotate, so that the clamping member changes from the pre-locked state to the locked state. There is a lag drive relationship with a certain rotation angle between the power gear and the clamping member.

[0013] Further, the clamping member and the power gear are in a coaxial relationship with upper and lower stacking. The power gear is in the form of a semi-gear. An arc-shaped groove and a first step portion are provided on the side of the power gear facing the clamping member, and a concave area formed by cutting is provided on the side of the clamping member facing the power gear. The concave area matches the requirements of the lag drive rotation of the power gear, and a second step portion is formed at the edge of the concave area. The second step portion is used to abut and support the first step portion to cooperate with the power gear to drive the clamping member to rotate. And a lower convex column is provided in the concave area, and the lower convex column is inserted into the arc-shaped groove to cooperate with the lag drive.

[0014] Further, the clamping member is also provided with a first sensing post, and the first sensing post cooperates with a first sensor preset on the first support member to control the motor of the self-suction drive assembly, so that the self-suction drive assembly stops driving the clamping member.

[0015] Further, the power gear is also provided with a second sensing post, and the second sensing post cooperates with a second sensor preset on the first support member to control the motor of the self-suction drive assembly. When the motor drives the power gear to move in the reverse direction, the motor is controlled to stop, so that the power gear drives the arc-shaped groove to move in the reverse direction to provide an avoidance space for the lower convex column, which is used to cooperate with the unlocking unit to unlock.

[0016] Further, the clutch member is in the form of a plate and is installed on the first support member in the shape of a seesaw. The two ends of the clutch member are defined as the clutch end and the positioning end respectively. The card slot is provided on one side edge of the clutch end, and the elastic system is a compression spring and is supported on the other side edge of the clutch end. The positioning end is positioned to balance the support of the elastic system. The unlocking unit includes an independent automatic unlocking mechanism and a manual unlocking mechanism. Both the automatic unlocking mechanism and the manual unlocking mechanism separate the clutch member from the clamping member by pushing the clutch end of the clutch member to rotate, so as to achieve unlocking.

[0017] Further, in the above solution, the automatic unlocking mechanism includes an electromagnetic switch and a toggle rod. The toggle rod is mounted on the first support member in the form of a seesaw, and one end of the toggle rod abuts against the engaging end of the clutch member. When the electromagnetic switch is energized, it pushes the other end of the toggle rod, causing the toggle rod to rotate and push the engaging end of the clutch member to rotate, so that the clutch member is separated from the engaging member, achieving unlocking.

[0018] Further, in the above solution, the manual unlocking mechanism includes a handle and a manual toggle piece. The handle is rotatably assembled on the first support member and supported by a second torsion spring. The manual toggle piece is connected to the handle and rotates with the handle. The manual toggle piece is stacked on the clutch member and is provided with a toggle groove. A toggle pin is provided on the engaging end of the clutch member, and the toggle pin extends into the toggle groove. By squeezing the toggle pin through the toggle groove, the engaging end of the clutch member is driven to rotate, so that the clutch member is separated from the engaging member, achieving unlocking.

[0019] Further, in the above solution, a toggle key is further provided on the first support member. The toggle key switches between a first position and a second position. When the toggle key is in the first position, it supports the positioning end of the clutch member to achieve the support of the balancing elastic system. When the toggle key is in the second position, it pushes the positioning end of the clutch member to deflect by a certain angle, and the engaging end rotates by the same angle accordingly and presses down the elastic system, so that the card slot completely avoids the engagement of the first and second teeth of the engaging member.

[0020] Further, in the above solution, a locking slideway is provided on the first support member. The locking slideway is used to guide the locking member into the first support member, and the hook of the engaging member protrudes into the locking slideway to be hooked with the locking member. The locking member is an annular member and is installed on the box body or cabinet body through a second support member.

[0021] The self-locking lock provided by the present invention is applicable to the extrusion sealing of a box door or a cabinet door. When the box door or cabinet door is closed, the hook of the engaging member is hooked with the locking member, and first, a pre-locked state is established through the engagement of the first tooth of the engaging member and the card slot, and then the engaging member is driven to rotate by a self-suction drive assembly. The engaging member pulls the locking member through the hook, so that the box door or cabinet door is further closed, overcoming the large reaction force generated when the gasket or O-ring is squeezed, achieving a locked state, and establishing a locked state through the engagement of the second tooth of the engaging member and the card slot to prevent bouncing. When unlocking, the clutch member is driven to rotate by an unlocking unit, so that the clutch member is separated from the engaging member, achieving unlocking. The unlocking forms include a semi-open unlocking form and a full-open unlocking form. The semi-open unlocking form is to switch from the engagement of the second tooth and the card slot to the engagement of the first tooth and the card slot, and the full-open unlocking form is that both the first tooth and the second tooth are disengaged from the card slot. Therefore, in actual use, in the case of vacuum tightness or high temperature and high pressure, first, the semi-open unlocking form is used to perform operations such as pressure relief and temperature reduction inside the box or cabinet, and then the full-open unlocking form is used for operation, which is safer and more reliable in use.

[0022] The structure of the present invention is simple, with low investment cost, strong practicability, labor-saving and safe operation, and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 is a schematic structural diagram of one embodiment of the present invention;

[0024] Attached Figure 2 is Figure 1 a schematic diagram of the separated state of the lock fastener in the embodiment;

[0025] Attached Figure 3 is Figure 1 a schematic exploded view of the structure of the embodiment;

[0026] Attached Figure 4 is Figure 1 a schematic diagram of the internal structure in the locked state of the embodiment;

[0027] Attached Figure 5 is Figure 4 a schematic exploded view of the structure of the embodiment;

[0028] Attached Figure 6 is Figure 5 a schematic enlarged view of the partial structure;

[0029] Attached Figure 7 is a schematic diagram of the clamping member structure of the present invention;

[0030] Attached Figure 8 is a schematic diagram of the present invention applied to a box or a cabinet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the drawings to fully understand the purpose, features and effects of the present invention.

[0032] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Referring Figures 1 to 8 as shown, the present invention relates to a self-suction lock applicable to the extrusion sealing of a box door or a cabinet door, which has a first support member 1, a clamping member 2, a lock fastener 3, a clutch member 4, a self-suction drive assembly 5 and an unlocking unit 6.

[0034] As shown in the figure, the first support member 1 is box-shaped, providing an installation space inside, and being convenient for installation on the door of a box or a cabinet 100, as well as for disassembly, replacement, maintenance, etc. The clamping member 2 is positioned on the first support member 1 and can rotate relative to it. The clamping member 2 has at least a hook 21, a first tooth 22 and a second tooth 23, and the first tooth 22 and the second tooth 23 are arranged in sequence on the rotation track of the clamping member 2. Further preferably, the hook 21, the first tooth 22 and the second tooth 23 rotate in the same plane, which is convenient for manufacturing and working. The locking member 3 is directly or indirectly installed on the box body or the cabinet body. As shown in the figure, the locking member 3 is an annular member and is installed on the box body or the cabinet body 200 through the second support member 7, which is convenient for installation implementation. The second support member 7 is also box-shaped, providing an installation space inside, and its outer shape matches that of the first support member 1. The locking member 3 is used to hook with the hook 21 of the clamping member 2 to close and stabilize the corresponding box door or cabinet door and maintain the corresponding posture. The clutch member 4 is assembled on the first support member 1 in a rotatable manner and is supported by an elastic system 42, so that the clutch member 4 has the characteristic of rotational floating. A slot 41 is provided on the clutch member 4. The slot 41 is used to engage with the first tooth 22 to establish a pre-locking state, and to engage with the second tooth 23 through the slot 41 to establish a locking state. The hook 21 is hooked with the locking member 3 in both the pre-locking state and the locking state. The self-suction drive assembly 5 is assembled on the first support member 1 and is used to drive the clamping member 2 to rotate, so that the clamping member 2 changes from the pre-locking state to the locking state, achieving automatic locking, overcoming the large reaction force generated when the gasket or O-ring is squeezed, without manual operation, and making it easier to close the door. The unlocking unit 6 is assembled on the first support member 1 and is used to drive the clutch member 4 to rotate, so that the clutch member 4 is separated from the clamping member 2 to achieve unlocking. The unlocking forms include a semi-open unlocking form and a full-open unlocking form. The semi-open unlocking form is to switch from the engagement of the second tooth 23 with the slot 41 to the engagement of the first tooth 22 with the slot 41 to realize the semi-open state of the door. The full-open unlocking form is that both the first tooth 22 and the second tooth 23 are disengaged from the slot 41 to realize the free opening of the door. In order to improve the use in this embodiment, a locking slideway 14 is provided on the first support member 1. The locking slideway 14 is used to guide the locking member 3 into the first support member 1, having a limiting and guiding effect and being convenient for closing and hooking. The hook 21 of the clamping member 2 protrudes into the locking slideway 14 to hook with the locking member 3. When pre-tightening, the locking member 3 enters the locking slideway 14 and slides into the hook 21 along the slideway, so that the hooking hook 21 hooks the locking member 3.

[0035] Refer to Figure 3 、 4As shown in Figures 5 and 6, in this embodiment, the self-priming drive assembly 5 includes a motor 51, a transmission gear set 52, and a power gear 53. The power gear 53 and the clamping member 2 are assembled together on the rotating shaft 54, and a first torsion spring 55 is assembled on the rotating shaft 54. The first torsion spring 55 is designed to provide an automatic return force to the rotating shaft 54, so that the clamping member 2 also has a return force to assist in pre-hanging and subsequent unlocking operations. The power output by the motor 51 is transmitted to the power gear 53 through the transmission gear set 52, and the power gear 53 drives the clamping member 2 to rotate, so that the clamping member 2 changes from the pre-locked state to the locked state; there is a lag drive relationship with a certain rotation angle between the power gear 53 and the clamping member 2 to obtain a corresponding idle space, and this idle space is designed to match the unlocking requirement, and the specific implementation will be described later. In this embodiment, for the convenience of installation and setting, the output end of the motor 51 is connected to the transmission gear set 52 in the form of a worm and worm gear. The transmission gear set 52 is designed with multiple-stage transmission according to needs to obtain the required torque and meet the self-priming locking requirement.

[0036] Refer to Figure 3 、 4As shown in FIGS. 5, 6, and 7, in this embodiment, the clamping member 2 and the power gear 53 are in a coaxially stacked relationship in the up-and-down direction. The power gear 53 is in the form of a semi-gear, which meets the transmission requirements and is conducive to the installation and combination of components. On the side of the power gear 53 facing the clamping member 2, there are an arc-shaped groove 531 and a first step portion 532. On the side of the clamping member 2 facing the power gear 53, there is an inward concave area 24 formed by cutting. This inward concave area 24 matches the requirements of the power gear for lagging drive rotation. At the edge of the inward concave area 24, a second step portion 25 is formed. The second step portion 25 is used to cooperate with the first step portion 532 to abut and support to drive the clamping member 2 to rotate by the power gear 53. And in the inward concave area 24, there is a downward convex column 26. The downward convex column 26 is inserted into the arc-shaped groove 531 to cooperate with the lagging drive. The arc-shaped groove 531 extends along the rotation trajectory of the clamping member 2. During operation, in the initial state, the arc-shaped groove 531 and the inward concave area 24 provide corresponding avoidance spaces. At this time, the clamping member 2 can rotate freely. When the box door or cabinet door is closed, the hook 21 of the clamping member 2 is self-adaptively hooked to the locking fastener 3 by the closing force of the door or inertia. At this time, it is in the pre-locked state, and the clamping groove 41 on the clutch member 4 is clamped with the first tooth 22. Subsequently, the power output by the motor 51 drives the power gear 53 to rotate. The corresponding extreme end of the arc-shaped groove 531 abuts against the downward convex column 26, and at the same time, the first step portion 532 on the corresponding side also cooperates with the second step portion 25 to abut. Thus, when the power gear 53 continues to rotate, it will drive the clamping member 2 to rotate. This is a form of lagging drive. The power gear 53 drives the clamping member 2 to rotate, thereby realizing the self-suction drive assembly 5 to drive the clamping member 2 to rotate, so that the clamping member 2 changes from the pre-locked state to the locked state, achieving automatic locking, overcoming the large reaction force generated when the gasket or O-ring is squeezed, without manual operation, and making the door closing easier. In the locked state, the clamping groove 41 is clamped with the second tooth 23, so that the corresponding box door or cabinet door is closed and stabilized, maintaining the corresponding posture. In this state, the motor 51 rotates in reverse, driving the power gear 53 to rotate back. The arc-shaped groove 531 and the first step portion 532 follow the movement and withdraw from the corresponding support, providing a reverse avoidance space for the clamping member 2 for unlocking needs. Such cyclic actions enable the self-suction locking operation to be satisfied in this structural system while also solving the unlocking movement problem.

[0037] In this embodiment, in order to accurately and effectively control self-priming and avoidance return, the clamping member 2 is further provided with a first induction post 27, and the first induction post 27 cooperates with a first inductor 11 preset on the first support member 1 to control the motor 51 of the self-priming drive assembly 5, so that the self-priming drive assembly 5 stops driving the clamping member 2. The power gear 53 is further provided with a second induction post 533, and the second induction post 533 cooperates with a second inductor 12 preset on the first support member 1 to control the motor 51 of the self-priming drive assembly 5, so that when the motor 51 drives the power gear 53 to move in the reverse direction (this reverse movement is determined with reference to the forward self-priming drive direction), the motor is controlled to stop, and the power gear drives the arc-shaped groove 531 to move in the reverse direction to provide an avoidance space for the lower convex post 26, for the unlocking unit 6 to cooperate in unlocking work. Preferably, the first inductor 11 and the second inductor 12 are photoelectric inductors, and the output signals control the motor 51, which is conducive to automatic control.

[0038] Refer to Figure 3 , 4 As shown in FIGS. 5 and 6, in this embodiment, the clutch member 4 is in the form of a plate body and is installed on the first support member 1 in the form of a seesaw. The two ends of the clutch member 4 are defined as a clutch end 43 and a positioning end 44 respectively. The card slot 41 is arranged on one side of the clutch end 43, and the elastic system 42 is a compression spring and abuts against the other side of the clutch end 43. The positioning end 44 balances the abutment of the elastic system 42 through positioning, so that the clutch member 4 obtains a preset stable posture to meet the locking requirements. The unlocking unit 6 includes an automatic unlocking mechanism 61 and a manual unlocking mechanism 62 that work independently. Both the automatic unlocking mechanism 61 and the manual unlocking mechanism 62 separate the clutch member 4 from the clamping member 2 by pushing the clutch end 43 of the clutch member 4 to rotate, so as to achieve unlocking. In this embodiment, the automatic unlocking mechanism 61 and the manual unlocking mechanism 62 are arranged at the same time to meet the selection and use in different situations, with flexible use and strong practicability.

[0039] In this embodiment, the automatic unlocking mechanism 61 includes an electromagnetic switch 611 and a toggle rod 612. The toggle rod 612 is installed on the first support member 1 in the form of a seesaw, and one end of the toggle rod 612 abuts against the clutch end 43 of the clutch member 4; the electromagnetic switch 611 then energizes to push the other end of the toggle rod 612, so that the toggle rod 612 rotates and pushes the clutch end 43 of the clutch member 4 to rotate, so that the clutch member 4 is separated from the clamping member 2, achieving unlocking. When automatic unlocking is required, the power supply of the electromagnetic switch 611 is turned on, and the corresponding end of the electromagnetic switch 611 extends out and pushes the toggle rod 612, so that the toggle rod 612 rotates and pushes the clutch end 43 of the clutch member 4 to rotate, so that the clutch member 4 is separated from the clamping member 2, achieving unlocking. The electromagnetic switch 611 is a prior art and can be purchased on the market, and its structure and working principle will not be elaborated here.

[0040] In this embodiment, the manual unlocking mechanism 62 includes a handle 621 and a manual toggle plate 622. The handle 621 is rotatably assembled on the first support member 1 and supported by a second torsion spring 623. The second torsion spring 623 provides a restoring force to the handle 621 and enhances the handle's operating feel. The manual toggle plate 622 is connected to the handle 621 and rotates with the handle 621. The manual toggle plate 622 is superimposed on the clutch member 4 and is provided with a toggle groove 6221. The clutch end 43 of the clutch member 4 is provided with a toggle pin 45. The toggle pin 45 extends into the toggle groove 6221. The toggle groove 6221 compresses the toggle pin 45, driving the clutch end 43 of the clutch member 4 to rotate, thereby separating the clutch member 4 from the engaging member 2 and unlocking the clutch.

[0041] In this embodiment, the first support member 1 is further provided with a toggle key 13, which switches between a first position and a second position. When in the first position, the toggle key 13 supports the positioning end 44 of the clutch member 4, achieving the support of the balancing elastic system 42 and defining the one-way rotation of the clutch member 4. When in the second position, the toggle key 13 pushes the positioning end 44 of the clutch member 4 to deflect a certain angle, and the clutch end 43 rotates the same angle and presses the elastic system 42, so that the slot 41 completely avoids the engagement of the first and second latch teeth 22 and 23. At this time, the lock is in a normally open state, which meets the requirements of normally open door use in maintenance and other situations, and prevents the lock from being accidentally engaged. When resuming use, the toggle key 13 can be switched back to the first position. In this embodiment, the toggle key 13 is operated in a push-pull manner, with a simple structure and convenient implementation.

[0042] The self-priming lock for extrusion sealing of box doors or cabinet doors provided by the present invention has a simple structure, low investment cost, strong practicality, labor-saving and safe operation, and a wide range of applications. When the box door or cabinet door is closed, the hook of the clamping member is hooked with the lock member, and a pre-locking state is first established by the clamping engagement of the first clamping tooth of the clamping member with the clamping slot. Then, the clamping member is driven to rotate by the self-priming drive assembly, and the clamping member pulls the lock member through the hook, so that the box door or cabinet door is further closed, overcoming the large reaction force generated when the gasket or O-ring is squeezed, and reaching a locked state. The second clamping tooth of the clamping member is engaged with the clamping slot to establish a locked state to prevent it from bouncing open. When unlocking, the clutch member is driven to rotate by the unlocking unit, so that the clutch member and the clamping member are separated to achieve unlocking. The unlocking state includes a half-open unlocking state and a fully open unlocking state. The half-open unlocking state is to switch from the clamping engagement of the second clamping tooth with the clamping slot to the clamping engagement of the first clamping tooth with the clamping slot. The fully open unlocking state is to disconnect the first clamping tooth and the second clamping tooth from the clamping slot. Therefore, in actual use, in the case of vacuum sealing or high temperature and high pressure, the box or cabinet can be first half-opened and unlocked to relieve pressure and cool down the inside, and then fully opened and unlocked, which is safer and more reliable to use.

[0043] Although the preferred specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to the exact structures and operations identical to the above description and drawings. For those skilled in the art of this technology, many equivalent improvements and changes can still be made to the above embodiments through logical analysis, reasoning, or limited experiments without departing from the concept and scope of the present invention. However, these improvements and changes should all fall within the scope of protection required by the present invention.

Claims

1. A self - suction lock applicable to the extrusion seal of a box door or a cabinet door, characterized in that, Comprising: A first support member (1) for mounting on a cabinet door or a cupboard door; A clamping member (2) positioned on the first support member (1) and capable of relative rotational movement. The clamping member (2) has at least a hook (21), a first tooth (22) and a second tooth (23), and the first tooth (22) and the second tooth (23) are arranged in sequence on the rotation track of the clamping member (2); A locking member (3) directly or indirectly mounted on a box body or a cabinet body, and the locking member (3) is used for hooking with the hook (21) of the clamping member (2); A clutch member (4) assembled on the first support member (1) in a rotatable manner and supported by an elastic system (42). A clamping groove (41) is provided on the clutch member (4). The clamping groove (41) is used for clamping with the first tooth (22) to establish a pre-locking state, and for clamping with the second tooth (23) through the clamping groove (41) to establish a locking state. The hook (21) is hooked with the locking member (3) in both the pre-locking state and the locking state; A self-suction driving assembly (5) assembled on the first support member (1) for driving the clamping member (2) to rotate, so that the clamping member (2) changes from the pre-locking state to the locking state; An unlocking unit (6) assembled on the first support member (1) for driving the clutch member (4) to rotate, so that the clutch member (4) is separated from the clamping member (2) to achieve unlocking. The unlocking forms include a semi-open unlocking form and a full-open unlocking form. The semi-open unlocking form is to switch from the clamping of the second tooth (23) with the clamping groove (41) to the clamping of the first tooth (22) with the clamping groove (41); the full-open unlocking form is that both the first tooth (22) and the second tooth (23) are disengaged from the clamping groove (41); The self-suction driving assembly (5) includes a motor (51), a transmission gear set (52) and a power gear (53). The power gear (53) and the clamping member (2) are assembled on a rotating shaft (54) together, and a first torsion spring (55) is assembled on the rotating shaft (54). The power output by the motor (51) is transmitted to the power gear (53) through the transmission gear set (52), and the power gear (53) drives the clamping member (2) to rotate, so that the clamping member (2) changes from the pre-locking state to the locking state. There is a lag driving relationship with a certain rotation angle between the power gear (53) and the clamping member (2); The clamping member (2) and the power gear (53) are in a coaxial relationship with upper and lower stacking. The power gear (53) is in the form of a semi-gear. On the side of the power gear (53) facing the clamping member (2), there are an arc-shaped groove (531) and a first step portion (532). On the side of the clamping member (2) facing the power gear (53), there is a concave area (24) formed by cutting. This concave area (24) matches the requirement of the power gear for lagging drive rotation. And at the edge of the concave area (24), a second step portion (25) is formed. The second step portion (25) is used to abut and support the first step portion (532) to cooperate with the power gear (53) to drive the clamping member (2) to rotate. And in the concave area (24), there is a downward protruding post (26). The downward protruding post (26) is inserted into the arc-shaped groove (531) to cooperate with the lagging drive. On the first support member (1), there is a locking-in slideway (14). The locking-in slideway (14) is used to guide the locking member (3) into the first support member (1). The hook (21) of the clamping member (2) protrudes into the locking-in slideway (14) to be hooked with the locking member (3). The locking member (3) is an annular member and is installed on the box body or cabinet body through the second support member (7).

2. The self - suction lock applicable to the extrusion sealing of a box door or a cabinet door according to claim 1, characterized in that, The clamping member (2) is further provided with a first induction post (27). The first induction post (27) cooperates with a first inductor (11) preset on the first support member (1) to control the motor (51) of the self-suction drive assembly (5), so that the self-suction drive assembly (5) stops driving the clamping member (2).

3. The self - suction lock applicable to the extrusion sealing of a box door or a cabinet door according to claim 1, wherein The power gear (53) is further provided with a second induction post (533). The second induction post (533) cooperates with a second inductor (12) preset on the first support member (1) to control the motor (51) of the self-suction drive assembly (5). When the motor (51) drives the power gear (53) to move in the reverse direction, the motor is controlled to stop, so that the power gear drives the arc-shaped groove (531) to move in the reverse direction to provide an avoidance space for the downward protruding post (26), which is used to cooperate with the unlocking unit (6) for unlocking work.

4. The self - suction lock applicable to the extrusion sealing of a box door or a cabinet door according to claim 1, characterized in that, The clutch member (4) is in the form of a plate body and is installed on the first support member (1) in the form of a seesaw. The two end heads of the clutch member (4) are defined as a clutch end (43) and a positioning end (44) respectively. A card slot (41) is arranged on one side edge of the clutch end (43). And the elastic system (42) is a compression spring and abuts against the other side edge of the clutch end (43). The positioning end (44) balances the abutment of the elastic system (42) through positioning. The unlocking unit (6) includes an automatic unlocking mechanism (61) and a manual unlocking mechanism (62) that work independently. Both the automatic unlocking mechanism (61) and the manual unlocking mechanism (62) make the clutch member (4) separate from the clamping member (2) by pushing the clutch end (43) of the clutch member (4) to rotate, so as to achieve unlocking.

5. The self - suction lock applicable to the extrusion seal of a box door or a cabinet door according to claim 4, characterized in that, The automatic unlocking mechanism (61) includes an electromagnetic switch (611) and a toggle lever (612). The toggle lever (612) is mounted on the first support member (1) in the form of a seesaw. One end of the toggle lever (612) abuts against the engaging end (43) of the engaging member (4). When the electromagnetic switch (611) is energized, it pushes the other end of the toggle lever (612), causing the toggle lever (612) to rotate and push the engaging end (43) of the engaging member (4) to rotate, separating the engaging member (4) from the engaging part (2) to achieve unlocking.

6. The self - suction lock applicable to the extrusion sealing of a box door or a cabinet door according to claim 4, characterized in that, The manual unlocking mechanism (62) includes a handle (621) and a manual toggle piece (622). The handle (621) is rotatably assembled on the first support member (1) and supported by a second torsion spring (623). The manual toggle piece (622) is connected to the handle (621) and rotates with the handle (621). The manual toggle piece (622) is superimposed on the engaging member (4) and is provided with a toggle groove (6221). A toggle pin (45) is provided on the engaging end (43) of the engaging member (4). The toggle pin (45) extends into the toggle groove (6221). By squeezing the toggle pin (45) through the toggle groove (6221), the engaging end (43) of the engaging member (4) is driven to rotate, separating the engaging member (4) from the engaging part (2) to achieve unlocking.

7. The self - suction lock applicable to the extrusion sealing of a box door or a cabinet door according to claim 4, characterized in that, A toggle key (13) is further provided on the first support member (1). The toggle key (13) switches between a first position and a second position. When the toggle key (13) is in the first position, it supports the positioning end (44) of the engaging member (4) to balance the support of the elastic system (42). When the toggle key (13) is in the second position, it pushes the positioning end (44) of the engaging member (4) to deflect by a certain angle, and the engaging end (43) rotates correspondingly by the same angle and presses down the elastic system (42), so that the card slot (41) completely avoids the engagement of the first tooth (22) and the second tooth (23).

Images