General-purpose cathode lock with pre-press release function

Abstract

A general-purpose cathode lock with pre-press release function, comprising: a lock body, an opening and at least two accommodation spaces are arranged in the lock body, which are communicated with each other and located on both sides of the opening; two lock catch baffle plates are rotatably arranged in the corresponding accommodation spaces and have a clamped part arranged away from the opening; two clamping members are rotatably arranged in the lock body and are pushed by elastic members, so that the clamped part and the clamped part are clamped with each other to limit the rotation of the lock catch baffle plate; two electromagnetic mechanisms respectively drive corresponding linkage mechanisms to push the clamping members to release the clamped state, so as to release the lock catch baffle plate. The utility model aims at improving the pre-pressing problem commonly used in fireproof doors and other applications, and improving the unlocking reliability.

Description

Technical Field

[0001] This utility model relates to an electronically controlled lock, and more particularly to a general-purpose cathode lock with a pre-pressure release function. Background Technology

[0002] In modern society, access control systems are the first line of defense for security, whether in public buildings or residential environments. Besides traditional mechanical locks, electronic locks, such as electric dropbolts and electric strikes, are widely used in access control systems. Electronic locks typically utilize electromagnetic mechanisms to lock and unlock, providing more automated and efficient access management.

[0003] However, existing electronic locks, especially cathode locks, generally have functional limitations when facing "preload" conditions, which is a challenge that current technology urgently needs to overcome.

[0004] "Pre-pressure" refers to the unexpected and excessive physical contact pressure that occurs between the latch on the door (such as a common bevel latch) and the locking mechanism inside the lock (such as a strike plate) due to various reasons. This pressure can cause the gap between the latch and the locking mechanism to disappear, resulting in the locking mechanism being "stuck" as if by the latch.

[0005] There are several common causes of pre-compression:

[0006] Structural Deformation and Misalignment: After prolonged use, door frames and door panels may experience minor deformations or misalignments due to material aging, humidity changes, or even natural disasters (such as earthquakes). These deformations can cause the latch and locking mechanism to become misaligned, resulting in continuous pressure.

[0007] Inaccurate installation: During the initial installation of the door lock or door leaf, if the alignment is not precise enough, even a small deviation may cause initial preload between the bolt and the locking mechanism.

[0008] Human error: Sometimes users apply extra force when closing the door, or fail to fully release the pressure on the door before unlocking, which may also temporarily cause pre-pressure.

[0009] In specific applications such as fire doors, the "pre-pressure" problem of electronically controlled locks can have far more serious consequences than with ordinary door locks, directly threatening life and property safety:

[0010] Obstructing escape routes: The primary function of fire doors during a fire is to provide a safe escape route. If pre-compression prevents the locks from unlocking, people will be unable to quickly pass through the fire door, severely hindering escape and potentially causing injury or death.

[0011] Delays in fire rescue: When firefighters enter a fire scene to carry out rescue missions, the inability to open fire doors may delay precious rescue time, allowing the fire to spread and increasing the difficulty and risk of rescue.

[0012] Violation of fire safety regulations and standards: The design and installation of fire doors must comply with strict fire safety regulations and standards to ensure their reliability in emergency situations. If the lock fails due to preload issues, it directly violates these regulations and carries legal liability.

[0013] Impairing the integrity of a building's fire compartmentation: Fire doors are a critical component of a building's fire compartmentation, designed to limit the spread of fire and smoke. If the locks cannot be properly opened or closed during a fire (e.g., due to pre-compression preventing them from closing quickly enough to contain the fire in its early stages), the integrity of the fire compartmentation will be compromised, causing the fire to spiral out of control.

[0014] Causes public safety panic: In an emergency, a malfunctioning lock can not only cause physical obstruction, but may also trigger panic and exacerbate the chaotic situation.

[0015] Taking similar cathode locks, such as Taiwan Patent No. M349426 "Electromagnetic Lock Structure" or No. M250013 "Electrically Controlled Lock," as examples, these electronically controlled locks can operate smoothly under normal, unpre-pressurized conditions. However, their design primarily focuses on the electromagnetic force driving the locking element to fix or swing, and does not provide an effective and automatic solution for pre-pressurized conditions. When pre-pressurization occurs between the bolt and the locking element, these designs often fail to provide a sufficient "pre-pressurization release" mechanism, causing the internal linkage mechanism to malfunction due to insufficient space and force, resulting in unlocking failure or operational difficulties.

[0016] Therefore, how to improve the above-mentioned shortcomings is the technical difficulty that the creators of this case want to solve. Utility Model Content

[0017] In view of the present invention, the present invention aims to solve and improve the existing problems and deficiencies.

[0018] To achieve the above objectives, this utility model provides a general-purpose cathode lock with a pre-pressure release function, comprising: a lock body having an opening and at least two accommodating spaces inside the lock body, the accommodating spaces being interconnected and corresponding to opposite sides of the opening; two latching baffles rotatably disposed within the corresponding accommodating spaces and located on opposite sides of the opening, each latching baffle having a front end and a rear end, the front end being adjacent to the opening and the rear end being away from the opening, the rear end having a locking portion; and two locking members rotatably disposed within the lock body. Each locking element has a first end and a second end, and is located adjacent to the rear end of the corresponding locking baffle. The first end has a locking portion, which is engaged with the corresponding locking portion by an elastic element, thereby restricting the rotation of the locking baffle. There are two electromagnetic mechanisms, which are located in the lock body and each electromagnetic mechanism includes an electromagnetic actuator. There are also two linkage mechanisms, which are respectively connected to the corresponding electromagnetic mechanism and the locking element. When the corresponding electromagnetic actuator is activated, the linkage mechanism can push the second end of the locking element, causing the locking portion to disengage from the locking portion, thereby releasing the restriction on the locking baffle.

[0019] Each of the two linkage mechanisms includes multiple interconnected connecting rods and a drive assembly.

[0020] Each of the two linkage mechanisms includes a brake link, a first link, a second link, a third link, a fixed base, a driving member, and a driving base. The actuating rod of the electromagnetic actuator is connected to a first connecting hole of the brake link. A second connecting hole of the brake link is connected to the first link through a first pin. A screw is provided on the first link. The screw passes through a limiting groove on the brake link in sequence and is then locked into a screw sleeve embedded in the second link, thereby tightly connecting the first link and the second link.

[0021] The elastic element is a compression spring.

[0022] The engaging portion is a concave portion, and the engaged portion is a convex portion.

[0023] The beneficial effects of this invention are as follows: Through the above two sets of independent structures (including the latch baffle, locking component, electromagnetic mechanism and linkage mechanism), this utility model can provide sufficient action force under pre-pressure conditions, effectively overcome the pre-pressure between the lock tongue and the latch baffle, ensure smooth unlocking, and greatly improve the reliability of electronic control locks (especially cathode locks) in practical applications. In particular, for fire doors that require extremely high security, it can ensure that escape and rescue passages are unobstructed in emergency situations. Attached Figure Description

[0024] Figure 1This is a schematic diagram of a general-purpose cathode lock with pre-pressure release function according to this utility model.

[0025] Figure 2 This is a partially exploded view of the general-purpose cathode lock with pre-pressure release function of this utility model.

[0026] Figure 3 This is a schematic diagram of the cathode lock with pre-pressure release function of the general-purpose type of this utility model before operation.

[0027] Figure 4 This is a schematic diagram of the operation of the general-purpose cathode lock with pre-pressure release function of this utility model.

[0028] Figure 5 This is a schematic diagram of the ball bearing in this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1: Lock body 11: Opening

[0031] 12: Accommodation space 13: Groove

[0032] 2: Locking baffle 21: Front end

[0033] 22: Backend 221: Stuck section

[0034] 23: Pivot 24: Pivot Hole

[0035] 25: Reset component 3: Engaging component

[0036] 31: First end 311: Engaging part

[0037] 32: Second end; 33: Elastic element

[0038] 34: Pivot 4: Electromagnetic Mechanism

[0039] 41: Electromagnetic actuator 42: Actuating lever

[0040] 5: Linkage Mechanism 51: Brake Linkage

[0041] 511: First connecting hole; 512: Second connecting hole

[0042] 513: Limiting groove; 52: First connecting rod

[0043] 521: First pin; 522: Screw fastener

[0044] 53: Second connecting rod; 531: Screw sleeve

[0045] 532: Guide pin; 54: Third link

[0046] 541: First pivot hole; 542: Guide groove

[0047] 543: Pivot pin; 55: Fixing seat

[0048] 551: Second pivot hole; 56: Drive component

[0049] 561: Third pivot hole; 562: First hook part

[0050] 57: Drive seat 571: Second hook part

[0051] 572: Opening 6: Ball bearing. Detailed Implementation

[0052] To facilitate a concise understanding of the other features, advantages, and effects of this utility model, the following detailed description, in conjunction with the accompanying drawings, is provided:

[0053] Please see Figure 1 and Figure 2 As shown, this utility model provides a general-purpose cathode lock with pre-pressure release function, which includes:

[0054] A lock body 1 has an opening 11 and at least two accommodating spaces 12 inside the lock body 1. These accommodating spaces 12 are connected to each other and correspond to opposite sides of the opening 11. Each accommodating space 12 is used to accommodate a set of independent structures.

[0055] Two locking baffles 2 are rotatably disposed within corresponding receiving spaces 12 and located on opposite sides of the opening 11. Each locking baffle 2 has a front end 21 and a rear end 22, with the front end 21 adjacent to the opening 11 and the rear end 22 away from the opening 11. The rear end 22 has a locking portion 221. Each locking baffle 2 is disposed within the lock body 1 via a pivot 23, a pivot hole 24, and a reset member 25. This means that each locking baffle 2 has a pivot hole 24, through which the pivot 23 passes, allowing each locking baffle 2 to pivot around its corresponding pivot 23. The reset member 25 can be, for example, a torsion spring. The reset member 25 can be sleeved on the pivot 23. Both ends of the reset member 25 abut against the latch baffle 2 and the inner wall of the lock body 1, respectively. The reset member 25 can store bending torque and release reset force. The reset force allows each latch baffle 2 to automatically return to its predetermined position, thereby maintaining the locked state of each latch baffle 2. That is, when the latch bolt (not shown) on the door leaf extends into the opening 11 of the lock body 1, it abuts against the front end 21 of the latch baffle 2. In the locked state, the reset force provided by the reset member 25 pushes the latch baffle 2 against the latch bolt, allowing the front end 21 of the latch baffle 2 to lock the latch bolt, thus locking the door leaf. When an unlocking command is issued, the constraint on the latch baffle 2 is released, allowing the latch baffle 2 to rotate and no longer obstruct the latch bolt, enabling the door leaf to open. The locked state of each latch baffle 2 means that each latch baffle 2 is constrained and cannot rotate, effectively blocking the latch bolt and locking the door leaf. Figure 5 As shown, the lock body 1 is provided with a groove 13, which can accommodate a ball 6, and the ball 6 can temporarily stay in the groove 13.

[0056] The engaging portion 221 of the rear end 22 may be a protrusion, which extends outward from the rear end 22 of the locking baffle 2.

[0057] Two engaging components 3 are rotatably disposed within the lock body 1 and adjacent to the rear end 22 of the corresponding latching baffle 2. Each engaging component 3 has a first end 31 and a second end 32. The first end 31 has an engaging portion 311, which is engaged with the corresponding latched portion 221 by an elastic member 33, thereby restricting the rotation of the latching baffle 2. Each engaging component 3 is rotatably connected to the inner wall of the lock body 1 via a pivot 34, allowing each engaging component 3 to pivot around the corresponding pivot 34. The position of the pivot 34 must ensure that the engaging portion 311 of each engaging component 3 can accurately engage and disengage with the corresponding latched portion 221 of the latching baffle 2. The engaging portion 311 of the two engaging components 3 can be a recess.

[0058] The elastic element 33 can be a compression spring. One end of the elastic element 33 abuts against the first end 31 of the corresponding engaging member 3, and the other end of the elastic element 33 abuts against the inner wall of the lock body 1, so that the elastic element 33 can apply a pushing force to the first end 31 of the engaging member 3. The pushing force causes the engaging part 311 of the engaging member 3 to face and tightly fit against the engaged part 221 of the latch baffle 2, so as to maintain the locked state.

[0059] Two electromagnetic mechanisms 4 are disposed within the lock body 1, and each electromagnetic mechanism 4 includes an electromagnetic actuator 41. The electromagnetic actuator 41 is a device that converts electrical energy into magnetic energy to generate mechanical action. The electromagnetic actuator 41 typically contains an electromagnetic coil, which generates attraction or thrust when energized, driving an actuating rod 42 (or pull rod). The actuating rod 42 transmits force to the interior of the lock, completing the unlocking function. Each electromagnetic mechanism 4 is independently disposed within the lock body 1 and connected to a corresponding linkage mechanism 5 so that upon receiving an unlocking electrical signal, it generates sufficient force to drive the linkage mechanism 5.

[0060] Two linkage mechanisms 5 are respectively connected to the corresponding electromagnetic mechanism 4 and the locking member 3. When the corresponding electromagnetic actuator 41 is activated, the second end 32 of the locking member 3 is pushed, so that the locking part 311 is disengaged from the locked part 221, thereby releasing the restriction on the locking baffle 2.

[0061] Each linkage mechanism 5 converts and transmits the actuating force generated by the electromagnetic actuator 41 to the second end 32 of the corresponding engaging member 3. The linkage mechanism 5 may be in the form of a linkage, push rod, gear set or cam, etc., to ensure that when the electromagnetic actuator 41 is actuated, it can generate sufficient stroke and thrust to overcome any resistance (including preload) between the engaging member 3 and the locking baffle 2, so that the engaging part 311 can be smoothly disengaged from the engaged part 221, thereby unlocking the lock.

[0062] In this embodiment, each of the two linkage mechanisms 5 includes multiple pivotally connected links and a driving assembly. Specifically, each of the two linkage mechanisms 5 includes a brake link 51, a first link 52, a second link 53, a third link 54, a fixed base 55, a driving member 56, and a driving base 57. The actuating rod 42 of the electromagnetic actuator 41 is connected to a first connecting hole 511 of the brake link 51, and a second connecting hole 512 of the brake link 51 is connected to the first link 52 via a first pin 521. The first link 52 is provided with a screw 522 (serving as a connecting shaft). The screw 522 sequentially passes through a limiting groove 513 on the brake link 51 and then locks into a screw sleeve 531 embedded inside the second link 53, thereby tightly connecting the first link 52 and the second link 53 to achieve synchronous operation.

[0063] The screw sleeve 531 serves as a bushing for the shaft hole, providing a threaded locking structure to secure the screw 522, and also functions as a rotational support. The screw 522 (together with the screw sleeve 531) further passes through a first pivot hole 541 of the third link 54 and finally passes through a second pivot hole 551 of the fixed base 55, making the fixed base 55 the pivot point of this assembly (including the first link 52, the second link 53, and the screw sleeve 531), allowing the assembly to be securely connected and pivot around the fixed base 55. The second link 53 is also provided with a guide pin 532, which passes through a guide groove 542 of the third link 54. The third link 54 is provided with a pivot pin 543, which is connected to a third pivot hole 561 of the drive member 56. The drive member 56 is provided with a first hook portion 562, and the drive seat 57 is provided with a second hook portion 571. The first hook portion 562 is movably engaged with the second hook portion 571.

[0064] Please see Figure 2 , Figure 3 and Figure 4 As shown, the operation process in this embodiment is as follows:

[0065] Locked status:

[0066] In the locked state, the front ends 21 of the two latch plates 2 are located at the opening 11 of the lock body 1, ready to engage the bolt. This is because the two reset members 25 (e.g., torsion springs) continuously apply a preset torque to each latch plate 2, pushing the two latch plates 2 towards the bolt, keeping the two latch plates 2 in the "locked state". At the same time, the first ends 31 of the two engaging members 3 are continuously pushed by the two elastic members 33 (e.g., compression springs), ensuring that the engaging part 311 of each member tightly engages the engaging part 221 (e.g., protrusion) corresponding to the latch plate 2. Due to the firm constraint of the engaging members 3, even if the bolt applies a pushing force, the latch plate 2 cannot rotate at this time, thereby ensuring that the door is in the locked state. In this embodiment, when the door is in the locked state, the ball bearing 6 can be temporarily pushed into the groove 13.

[0067] Unlocking process:

[0068] Upon receiving the unlocking electrical signal, both electromagnetic mechanisms 4 (each including an electromagnetic actuator 41) will immediately activate, converting electrical energy into magnetic force. Inside each electromagnetic mechanism 4, the electromagnetic actuator 41 generates mechanical action and extends the actuating rod 42, generating a pushing or pulling force.

[0069] Each actuating lever 42 pushes its corresponding braking link 51. Each braking link 51 is connected to its respective first link 52 via a first pin 521. Notably, the first link 52 and the second link 53 are tightly integrated, forming an assembly that pivots around the fixed base 55. The braking link 51, the first link 52, and the second link 53 constitute two linkage mechanisms 5, responsible for effectively transmitting the actuating force of each electromagnetic actuator 41.

[0070] Under the push of the brake link 51, the first link 52, and the second link 53, the guide pin 532 moves within the guide groove 542, causing the third link 54 to pivot. This, in turn, causes the pivot pin 543 on the third link 54 to push the drive member 56 to pivot, which in turn drives the drive seat 57 to move. It is worth noting that the first hook portion 562 of the drive member 56 and the second hook portion 571 of the drive seat 57 are designed with a movable hook connection. This not only ensures effective power transmission but also provides a small allowance to compensate for possible errors or preload.

[0071] As the two linkage mechanisms 5 move, they precisely push the second end 32 of each corresponding engaging member 3. This thrust is sufficient to overcome the resistance exerted by each elastic member 33 (e.g., a compression spring) and any preload that may exist between each engaging part 311 and each engaged part 221, ensuring that the engaging part 311 of each engaging member 3 smoothly and completely disengages from the engaged part 221 of each locking baffle 2.

[0072] Once the constraints on each engaging part 311 are released, the rear ends 22 of the two latch plates 2 are no longer restricted and can rotate freely. At this time, when the bolt applies a pushing force to the two latch plates 2 due to the door opening action (whether manual or automatic retraction), the front ends 21 of each latch plate 2 can be pushed open. Each latch plate 2 will rotate along its corresponding pivot 23 to make room, allowing the bolt to pass smoothly and disengage, and finally, the door can be opened smoothly. Figure 5 As shown, in this embodiment, when the door is unlocked, the opening 572 of the drive seat 57 can temporarily hold the ball bearing 6. In this way, during the locking and unlocking of the door, the ball bearing 6 can be pushed by the drive seat 57 and temporarily rolled and held in the groove 13 or the opening 572, thereby reducing the friction between the structures during the locking and unlocking process.

[0073] Automatic reset and relocking process:

[0074] After the door is closed, the bolt re-inserts into the opening 11 of the lock body 1, pressing against the front end 21 of each latch baffle 2. As the front end 21 of each latch baffle 2 is pushed open, the reset element 25 (e.g., a torsion spring) simultaneously begins to store energy. When the bolt is fully inserted and each latch baffle 2 has passed the bolt, the reset element 25 releases energy, pushing each latch baffle 2 back to its original position. Simultaneously, due to the action of the elastic elements 33, each engaging part 311 automatically springs back and re-engages with the engaged part 221. Thus, each latch baffle 2 is once again engaged and locked, re-entering the locked state.

[0075] This utility model, through the above two independent structures (including the latch baffle 2, the locking component 3, the electromagnetic mechanism 4, and the linkage mechanism 5), can provide sufficient action force under pre-pressure conditions, effectively overcome the pre-pressure between the lock tongue and the latch baffle 2, ensure smooth unlocking, and greatly improve the reliability of electronic control locks (especially cathode locks) in practical applications. In particular, for fire doors that require extremely high security, it can ensure that escape and rescue passages are unobstructed in emergency situations.

[0076] The above discussion is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, any equivalent changes in shape, structure or combination made without departing from the spirit and scope of the present utility model should be covered within the scope of the patent application of the present utility model.

Claims

1. A general-purpose cathode lock with pre-pressure release function, characterized in that: include: A lock body having an opening and at least two receiving spaces inside the lock body, the receiving spaces being interconnected and corresponding to opposite sides of the opening; Two locking baffles are rotatably disposed in the corresponding receiving space and located on opposite sides of the opening. Each locking baffle has a front end and a rear end, the front end being adjacent to the opening and the rear end being away from the opening, and the rear end being provided with a locking part. Two engaging members are rotatably disposed in the lock body and are respectively adjacent to the rear end of the corresponding latch baffle. Each engaging member has a first end and a second end. The first end is provided with an engaging portion and is engaged with the corresponding engaging portion by an elastic member. Two electromagnetic mechanisms are disposed within the lock body, and each electromagnetic mechanism includes an electromagnetic actuator; and Two linkage mechanisms are respectively connected to the corresponding electromagnetic mechanism and the locking member, and can push the second end of the locking member when the corresponding electromagnetic actuator is activated, so that the locking part is disengaged from the locked part.

2. The general-purpose cathode lock with pre-pressure release function as described in claim 1, characterized in that: Each of the two linkage mechanisms includes multiple inter-pivotible links and a drive assembly.

3. The general-purpose cathode lock with pre-pressure release function as described in claim 1, characterized in that: Each of the two linkage mechanisms includes a brake link, a first link, a second link, a third link, a fixed base, a driving member, and a driving base. The actuating rod of the electromagnetic actuator is connected to a first connecting hole of the brake link. A second connecting hole of the brake link is connected to the first link through a first pin. A screw is provided on the first link. The screw passes through a limiting groove on the brake link in sequence and is then locked into a screw sleeve embedded in the second link, thereby tightly connecting the first link and the second link.

4. The general-purpose cathode lock with pre-pressure release function as described in claim 1, characterized in that: The elastic element is a compression spring.

5. The general-purpose cathode lock with pre-pressure release function as described in claim 1, characterized in that: The engaging part is a concave part, and the engaged part is a convex part.

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