An emergency lock assembly, a platform screen door

Abstract

In order to solve the problem that it cannot be quickly opened in the prior art, the present invention provides an emergency lock assembly and a screen door, comprising: a latch mechanism, a lifting mechanism and an emergency unlocking mechanism; the lifting mechanism is connected to the latch mechanism and is used for lifting the latch mechanism to lock; the emergency unlocking mechanism is connected to the lifting mechanism and is used for changing the latch mechanism from the locked state to the unlocked state through the axial movement of the lifting mechanism in an emergency state. In the present invention, the lifting mechanism is connected to the latch mechanism, and the latch mechanism is lifted to complete locking; the emergency unlocking mechanism is connected to the lifting mechanism, and in an emergency state, the latch mechanism is changed from the locked state to the unlocked state through the axial movement of the lifting mechanism. The structure of the present invention is simple, adopts mechanical actions, has high reliability, and can greatly improve the safety index of the shield room.

Description

Technical Field

[0001] The present invention relates to the field of screen doors, and in particular to an emergency lock assembly and a screen door. Background Art

[0002] A screen door is a shielding device specifically set up for shielding electromagnetic waves in some important places. The existing screen doors are driven by motors for closing and opening, which is relatively convenient.

[0003] However, after the screen door is closed, if an emergency such as a fire occurs and it is necessary to quickly open the door, since the motor and the like have no power supply due to the fire and are in a shutdown state. Generally, when the screen door is locked, it is necessary to cooperate the door bolt with the fixing plate, such as Figure 1 to lock the door.

[0004] Therefore, in the event of an accident such as a fire, it is necessary to manually turn the handle to move the door bolt out of the fixing plate to open the door. This results in a very slow opening speed and increases the safety hazard of personnel.

[0005] In short, the current screen door cannot be quickly opened, and there are relatively large safety hazards in case of an emergency. Summary of the Invention

[0006] In order to solve the problem of being unable to be quickly opened in the prior art, the present invention provides an emergency lock assembly and a screen door. The structure of the present invention is simple, and it is used in the same way as a common screen door in normal times. In case of special situations such as a fire, the screen door can be opened by pushing or pulling, ensuring the safety of the personnel in the shielding room.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an emergency lock assembly, comprising:

[0008] A latch mechanism;

[0009] A lifting mechanism, connected to the latch mechanism, for lifting the latch mechanism to lock the door;

[0010] An emergency unlocking mechanism, connected to the lifting mechanism, for changing the latch mechanism from the locked state to the unlocked state by the axial movement of the lifting mechanism in an emergency state.

[0011] The latch mechanism includes:

[0012] A first chute;

[0013] A first slider, arranged in the first chute, for moving up and down in the first chute;

[0014] A second chute, arranged on the first slider;

[0015] The second slider is arranged in the second chute;

[0016] The latch body is arranged at the end of one end of the second slider;

[0017] The fixing part is matched with the latch body and is used to enter the locked state;

[0018] The other end of the second slider is connected to the emergency unlocking mechanism, and is used to pull out the latch body from the fixing part through the axial movement of the lifting mechanism in an emergency state.

[0019] The lifting mechanism includes:

[0020] The rack;

[0021] The gear is meshed with the rack;

[0022] The gear shaft, the end of the gear shaft is provided with the gear, and is used to drive the gear to move on the rack, so that the latch mechanism performs the locking action;

[0023] The end of the gear shaft is connected to the emergency unlocking mechanism, and is used to change the latch mechanism from the locked state to the unlocked state through the axial movement of the gear shaft in an emergency state.

[0024] The emergency unlocking mechanism further includes:

[0025] The runner is arranged on the gear shaft and is used to drive the gear shaft to rotate;

[0026] The spring is arranged on the outside of the end of the gear shaft close to the runner;

[0027] The inner circlip sleeve is arranged on the outside of the spring;

[0028] The outer circlip sleeve is coaxially arranged with the inner circlip sleeve;

[0029] The inner circlip sleeve is fixed to the gear shaft, and is used to displace the outer circlip sleeve to the outside of the inner circlip sleeve when the spring contracts.

[0030] The emergency unlocking mechanism includes:

[0031] The first connecting shaft, one end of which is connected to the lifting mechanism;

[0032] The second connecting shaft is connected to the latch mechanism;

[0033] The first connecting piece, one end of which is connected to the other end of the first connecting shaft;

[0034] The second connecting piece is fixed on the lifting mechanism;

[0035] A third connecting shaft is arranged between the first connecting piece and the second connecting piece and is used for enabling the first connecting piece to rotate along the axis of the third connecting shaft when the lifting mechanism moves axially.

[0036] The other end of the first connecting piece is connected to the second connecting shaft and is used for driving the latch mechanism to change from the locked state to the unlocked state when the first connecting piece rotates.

[0037] A screen door includes the emergency lock assembly as described above.

[0038] The beneficial effects brought by the present invention at least include: the present invention connects the lifting mechanism with the latch mechanism, lifts and lowers the latch mechanism to complete locking; the emergency unlocking mechanism is connected to the lifting mechanism, and in an emergency state, the latch mechanism is changed from the locked state to the unlocked state through the axial movement of the lifting mechanism. The structure of the present invention is simple, adopts mechanical actions, has high reliability, and can greatly improve the safety index of the shielding room. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 is a schematic diagram of locking in the prior art.

[0041] Figure 2 is a perspective view of the emergency lock assembly of the present invention.

[0042] Figure 3 is Figure 2 an enlarged view of the E position in

[0043] Figure 4 is a front view of the first connecting piece.

[0044] Figure 5 is a front view of the lifting mechanism.

[0045] It should be clear that: Figure 1 the dotted line position in represents the unlocking position.

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figure 1 shown, it is a schematic structural diagram of an existing screen door locking device. By the lifting of the latch body 103 cooperating with the strip groove on the fixing part 106, the door locking or unlocking action is completed. However, when an emergency occurs, in order to protect the equipment, usually when a fire alarm signal is issued, the power supply is cut off. At this time, since the movement of the latch body 103 is driven manually or by a motor. Due to the lack of power supply, the motor cannot work, and the latch body 103 can only be manually removed from the fixing part 106, usually by rotating and then removing, which takes a long time and is prone to danger.

[0048] To solve the above problems, as Figures 2 - 5 shown, an emergency lock assembly includes: a latch mechanism 1, a lifting mechanism 2, and an emergency unlocking mechanism 3; the lifting mechanism 2 is connected to the latch mechanism 1 for lifting the latch mechanism 1 to lock the door; the emergency unlocking mechanism 3 is connected to the lifting mechanism 2.

[0049] The latch mechanism 1 includes: a first chute 101, a first slider 102, a second chute 103, a second slider 104, a latch body 105, and a fixing part 106; the first slider 102 is arranged in the first chute 101 for lifting movement in the first chute 101; the second chute 103 is arranged on the first slider 102; the second slider 104 is arranged in the second chute 105; the latch body 105 is arranged at one end of the second slider 104; the fixing part 106 is matched with the latch body 103 for entering the locked state; the other end of the second slider 104 is connected to the emergency unlocking mechanism 3 for pulling the latch body 103 out of the fixing part 104 through the axial movement of the lifting mechanism 2 in an emergency state.

[0050] The lifting mechanism 2 includes: a rack 201, a gear 202, and a gear shaft 203; the gear 202 meshes with the rack 201; the gear 202 is arranged at the end of the gear shaft 203 for driving the gear 202 to move on the rack 201 to make the latch mechanism 1 perform the locking action; the end of the gear shaft 203 is connected to the emergency unlocking mechanism 3 for changing the latch mechanism 1 from the locked state to the unlocked state through the axial movement of the gear shaft 203 in an emergency state.

[0051] It should be clear that the lifting mechanism 2 can also adopt transmission methods such as sprockets and chains, which will not be elaborated in this article.

[0052] The lifting mechanism 2 further includes: a runner 204, a spring 205, an inner circlip sleeve 206, and an outer circlip sleeve 207; the runner 204 is arranged on the gear shaft 203 and is used to drive the gear shaft 203 to rotate; the spring 205 is arranged outside one end of the gear shaft 203 close to the runner 204; the inner circlip sleeve 206 is arranged outside the spring 205; the outer circlip sleeve 207 is coaxially arranged with the inner circlip sleeve 206; the inner circlip sleeve 206 is fixed to the gear shaft 203 and is used to displace the outer circlip sleeve 207 to the outside of the inner circlip sleeve 206 when the spring 205 contracts. After the spring 205 is compressed to the maximum compression amount by an external force, the gear shaft 203 starts to move axially, driving the gear 202 to slide on the rack 201.

[0053] In actual production, a step can be arranged on the gear shaft 203 to complete the positioning of the inner circlip sleeve 206. The runner 204 can be a handwheel.

[0054] In use, the outer circlip sleeve 207 can be positioned by arranging a nut 203A at the end of the gear shaft 203.

[0055] The emergency unlocking mechanism 3 includes: a first connecting shaft 301, a second connecting shaft 302, a first connecting piece 303, a second connecting piece 304, and a third connecting shaft 305; one end of the first connecting shaft 301 is connected to the lifting mechanism 2; the second connecting shaft 302 is connected to the latch mechanism 1; one end of the first connecting piece 303 is connected to the other end of the first connecting shaft 301; the second connecting piece 304 is fixed on the lifting mechanism 2; the third connecting shaft 305 is arranged between the first connecting piece 303 and the second connecting piece 304 and is used to make the first connecting piece 303 rotate along the axis of the third connecting shaft 305 when the lifting mechanism 2 undergoes axial movement; the other end of the first connecting piece 303 is connected to the second connecting shaft 302 and is used to drive the second slider 104 to move in the second chute 103 when the first connecting piece 303 rotates, directly pulling out the latch body 103 from the fixing part 106; by Figure 1 It can be seen that the external dimension of the latch body 103 must be smaller than the slot of the fixing part 106. Therefore, the force used to directly pull out the latch body 103 from the fixing part 106 is very small, that is, the unlocking is fast; then through the reset of the spring 205, the gear shaft 203 is reset.

[0056] Specific Embodiment I: The first connecting piece 303 is L-shaped; one end of one side of the first connecting piece 303 is connected to the first connecting shaft 301 through a long hole 303A; the other side of the first connecting piece 303 is connected to the second connecting shaft 302 through a through hole; the junction of the two sides of the first connecting piece 303 is connected to the third connecting shaft 305; when the gear shaft 203 moves axially, the first connecting piece 303 rotates along the third connecting shaft 305. On the premise that the third connecting shaft 305 is fixed, a pulling force is generated on the second slider 104, driving the second slider 104 to move in the second chute 103, and directly pulling out the latch body 103 from the fixing part 106.

[0057] Preferably, to prevent interference, the first connecting piece 303 and the second connecting piece 304 are arranged in parallel; the second connecting shaft 302 is connected to the latch mechanism 1 through a bracket 303B; a long slot 303C is provided at the connection of the bracket 303B and the second connecting shaft 302.

[0058] Installing the above-mentioned emergency lock assembly on the shielding door of the shielding room can quickly open the door in case of an emergency and ensure the safety of personnel.

[0059] It should be clear that: the directional descriptions in this article are all based on Figure 2 as the standard.

[0060] It should be clear that: the technologies not elaborated in this article are all prior arts.

[0061] The above are only the preferred embodiments of the invention, and are not intended to limit the invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the invention shall be included in the protection scope of the invention.

Claims

1. An emergency lock assembly, characterized in that, Comprising: A latch mechanism; A lifting mechanism, connected to the latch mechanism, for lifting the latch mechanism to lock; An emergency unlocking mechanism, connected to the lifting mechanism, for changing the latch mechanism from the locked state to the unlocked state through the axial movement of the lifting mechanism in an emergency; The latch mechanism includes: A first chute; A first slider, arranged in the first chute, for performing lifting movement in the first chute; A second chute, arranged on the first slider; A second slider, arranged in the second chute; A latch body, arranged at one end of the second slider; A fixing part, matching with the latch body, for entering the locked state; The other end of the second slider is connected to the emergency unlocking mechanism, for pulling the latch body out of the fixing part through the axial movement of the lifting mechanism in an emergency; The lifting mechanism includes: A rack; A gear, meshing with the rack; A gear shaft, with the gear arranged at the end of the gear shaft, for driving the gear to move on the rack to make the latch mechanism perform the locking action; The end of the gear shaft is connected to the emergency unlocking mechanism, for changing the latch mechanism from the locked state to the unlocked state through the axial movement of the gear shaft in an emergency; The lifting mechanism further includes: A runner, arranged on the gear shaft, for driving the gear shaft to rotate; A spring, arranged outside the gear shaft near the runner end; An inner circlip sleeve, arranged outside the spring; An outer circlip sleeve, coaxially arranged with the inner circlip sleeve; The inner circlip sleeve is fixed to the gear shaft, for when the spring contracts, the outer circlip sleeve displaces to the outside of the inner circlip sleeve.

2. The emergency lock assembly according to claim 1, wherein, The emergency unlocking mechanism includes: A first connecting shaft, with one end connected to the lifting mechanism; A second connecting shaft, connected to the latch mechanism; A first connecting piece, with one end connected to the other end of the first connecting shaft; A second connecting piece, fixed on the lifting mechanism; A third connecting shaft, arranged between the first connecting piece and the second connecting piece, for when the lifting mechanism has an axial movement, making the first connecting piece rotate along the axis of the third connecting shaft; The other end of the first connecting piece is connected to the second connecting shaft, for when the first connecting piece rotates, driving the latch mechanism to change from the locked state to the unlocked state.

3. The emergency lock assembly according to claim 2, wherein: The first connecting piece is L-shaped; One end of one side of the first connecting piece is connected to the first connecting shaft through an oblong hole; The other side of the first connecting piece is connected to the second connecting shaft through a through hole; The junction of the two sides of the first connecting piece is connected to the third connecting shaft.

4. The emergency lock assembly according to claim 2, wherein: The first connecting piece and the second connecting piece are arranged in parallel.

5. The emergency lock assembly according to claim 2, wherein: The second connecting shaft is connected to the latch mechanism through a bracket; A long slot is arranged at the connection part of the bracket and the second connecting shaft.

6. A screen door, comprising: The emergency lock assembly according to claim 1.

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