An electric lock

Abstract

The utility model discloses an electric lock, include: lock shell, lock shell is equipped with cavity, lock tongue, lock tongue is with movable mode along the length direction of lock shell is equipped in the cavity, inner dial piece, inner dial piece is rotatively connected with lock shell, and one end is connected with lock tongue, outer dial piece, outer dial piece is rotatively connected with lock shell, and one end is connected with lock tongue, limit sheet, limit sheet is equipped with cavity, has first end, second end, first motor, first motor is equipped with in the cavity, has first extension axle, and first extension axle is with movable mode along the length direction with first motor is connected, and is connected with first end, to drive limit sheet switches between first position, second position, when in first position, second end is located the other end of inner dial piece directly above, when in second position, second end is not in the other end of inner dial piece directly above. The utility model can solve the problem that the existing electric lock cannot realize indoor, outdoor unlocking authentication at the same time, ensure that indoor personnel is not easy to be trapped.

Description

Technical Field

[0001] This utility model relates to the field of electric lock technology, and in particular to an electric lock. Background Technology

[0002] Currently, electric locks generally use a single solenoid to control the limit mechanism, and are set to allow entry and exit without authentication indoors, even with outdoor authentication (e.g., card swiping). While convenient for daily use, this poses certain security risks.

[0003] With increasingly stringent security requirements for access to high-security areas such as bank vaults, archives, and warehouses, it is crucial to install access control systems that require authentication before opening doors. To eliminate security risks, electromechanical locks typically remain locked in the power-off state (i.e., power-off locking). In this situation, without an access card, a spare key can be inserted into the lock cylinder to unlock the door. If both an access card and a key are not present, the door cannot be opened. In emergencies such as power outages or electronic control system malfunctions, the electronic control system becomes inoperable, card swiping fails, and the solenoid still restricts the bolt retraction. Personnel already inside without a key will be trapped and unable to escape, compromising their safety and posing a security risk.

[0004] Therefore, there is an urgent need for an electric lock that can both enable indoor unlocking authentication and ensure that people inside the room are not easily trapped. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing electric locks cannot achieve indoor and outdoor unlocking authentication while ensuring that people inside are not easily trapped.

[0006] To solve the above-mentioned technical problems, an embodiment of this utility model discloses an electric lock, comprising:

[0007] Lock case, with a cavity;

[0008] The latch is provided in the cavity in a manner that allows it to move along the length of the lock housing;

[0009] An inner lever is rotatably connected to the lock housing, and one end is connected to the bolt to drive the bolt to retract and extend.

[0010] An outer lever is rotatably connected to the lock housing, and one end is connected to the bolt to drive the bolt to retract and extend; the outer lever and the inner lever are spaced apart along the width direction of the lock housing.

[0011] A limiting piece is disposed in the cavity and has a first end and a second end;

[0012] A first motor is disposed in the cavity and has a first extension shaft. The first extension shaft is connected to the first motor in a manner that allows it to move along the length direction and is connected to the first end to drive the limiting piece to switch between a first position and a second position.

[0013] In the first position, the second end is located directly above the other end of the inner lever to restrict the forward rotation of the inner lever.

[0014] In the second position, the second end is not directly above the other end of the inner lever, and the inner lever can rotate in the forward direction.

[0015] Using the above technical solution, both the inner and outer levers can independently drive the bolt movement, enabling bidirectional door opening from both inside and outside. By switching the limit plate between two positions via the first motor, the rotation and contact of the inner lever are restricted. For example, when the first motor is energized, the limit plate is in the first position, meeting the indoor unlocking authentication requirements in high-security scenarios; when the second motor is de-energized, the limit plate is in the second position, ensuring it remains unrestricted in emergencies such as power outages, allowing indoor personnel to quickly open the door and evacuate without a key, effectively balancing the dual needs of security control and emergency escape.

[0016] According to another specific embodiment of the present invention, an electric lock is disclosed. When the first motor is energized, it can drive the first protruding axis to move in a first direction, thereby causing the limiting piece to be in the first position; the other end of the inner lever can abut against the second end, the inner lever cannot rotate in the forward direction, and cannot drive the lock tongue to retract.

[0017] When the first motor is de-energized, the first extending shaft can move in the second direction, causing the limiting piece to be in the second position, and the inner lever can rotate in the forward direction to cause the locking tongue to retract.

[0018] By adopting the above technical solution, the automatic switching of the limit plate in different positions is achieved by controlling the on / off state of the first motor. When energized, the first extender moves in the first direction, causing the limit plate to rotate in the opposite direction and be in the first position, which can lock the inner lever and ensure that the door is safely closed; when de-energized, the restriction is released, the first extender moves in the second direction, causing the limit plate to rotate in the forward direction and be in the second position, allowing people inside to directly rotate the inner lever to drive the latch to retract, realizing rapid evacuation without a key in an emergency.

[0019] According to another specific embodiment of the present invention, an electric lock is disclosed in which, in the first position, the second end is located directly above the other end of the outer lever block to restrict the forward rotation of the outer lever block;

[0020] In the second position, the second end is not directly above the other end of the outer lever, and the outer lever can rotate in the forward direction.

[0021] By adopting the above technical solution, the control of synchronous locking or unlocking of the outdoor and indoor spaces is realized by allowing the second end to be located directly above the inner and outer toggle blocks simultaneously, or not located directly above the inner and outer toggle blocks simultaneously.

[0022] According to another specific embodiment of the present invention, an electric lock is disclosed, wherein the lock shell is provided with a side plate, the side plate is provided with a limiting hole, and the limiting block penetrates the side plate along the width direction;

[0023] Part of the second end passes through the limiting hole and can move along the limiting hole;

[0024] In the first position, the second end is located at one end of the limiting hole; in the second position, the second end is located at the other end of the limiting hole.

[0025] By adopting the above technical solution, a limiting hole is provided on the side plate, allowing the second end to move along the guiding direction of the limiting hole. This effectively constrains the lateral displacement of the limiting piece during movement, improving its positional accuracy and operational stability. Simultaneously, the two ends of the limiting hole provide clear mechanical limits for the first and second positions of the limiting piece, ensuring the accuracy and reliability of the limiting state and enhancing the overall structural durability and control consistency.

[0026] According to another specific embodiment of the present invention, an electric lock is disclosed, wherein the limiting hole is arc-shaped and the central angle corresponding to the limiting hole is α, wherein 5°≤α≤30°.

[0027] By adopting the above technical solution, the movement stroke of the limit plate is effectively controlled by limiting the shape of the limiting hole and the corresponding central angle range, making the entire electric lock structure compact.

[0028] According to another specific embodiment of the present invention, an electric lock is disclosed, which further includes:

[0029] A lever stop is disposed in the cavity in a manner that allows it to move along the length direction. One end of the lever stop is provided with a limiting screw, which corresponds to the other end of the outer lever block. The second end is located above one end of the lever stop.

[0030] The second motor is provided with a second extension shaft, which is connected to the second motor in a manner that is movable along the length direction. One end of the extension shaft is connected to the other end of the lever block, and is used to drive the limit screw to switch between the locked position and the unlocked position.

[0031] When in the locked position, the limiting screw is directly above the outer lever block, and the other end of the outer lever block can abut against the limiting screw to restrict the forward rotation of the outer lever block;

[0032] When in the unlocked position, the limiting screw is not directly above the outer lever block, and the outer lever block can rotate in the forward direction.

[0033] By adopting the above technical solution, a limit screw independently controlled by a second motor is set on the lever stop, allowing the locking and unlocking of the outer lever block to be controlled independently of the inner lever block. Through coordinated control of the limit plate by the first motor, for example: when the first and second motors are energized, i.e., the limit plate is in the first position (neither the inner nor outer lever block can rotate), and the lever stop is in the unlocked position, a security mode of "unlocking after two-way authentication" can be achieved; when the first and second motors are de-energized, i.e., the limit plate is in the second position, and the lever stop is in the locked position, a security mode of "authentication required outdoors, no authentication required indoors" can be achieved. This provides a flexible and reliable mechanical redundancy mechanism for rapid evacuation in emergency situations while meeting strict security management requirements.

[0034] Specifically, when the second motor is powered on, the lever block is in the unlocked position, and when the second motor is powered off, the lever block is in the locked position.

[0035] According to another specific embodiment of the present invention, an electric lock is disclosed, wherein the lever stop includes:

[0036] The first through groove extends through the lever stop block along the height direction of the lock housing, and the other end of the inner lever block is located in the first through groove;

[0037] The second through groove extends through the lever stop block along the height direction, and the other end of the outer lever block is located in the second through groove;

[0038] The limiting screw is located in the second through groove.

[0039] By employing the above technical solution, independent first and second through slots are created on the lever stop to physically isolate the movement paths of the inner and outer levers, preventing them from interfering with each other. A limit screw is positioned within the first through slot to independently engage and limit the outer lever, thereby precisely controlling the locking state of the outer lever without affecting the indoor escape function. This effectively improves the reliability of the electric lock's individual control and the flexibility of its mode configuration.

[0040] According to another specific embodiment of the present invention, an electric lock is disclosed, wherein the first motor is provided with a first return spring, the first return spring is sleeved on the first extension shaft, one end is connected to the first end, and the other end is connected to the first motor; in the first position, the first return spring is in a compressed state; in the second position, the first return spring is in an extended state.

[0041] The second motor is provided with a second return spring, which is sleeved on the second extension shaft. One end of the second return spring is fixedly connected to the other end of the second extension shaft, and the other end is connected to the second motor. In the locked position, the second return spring is in a compressed state; in the unlocked position, the second return spring is in an extended state.

[0042] By adopting the above technical solution, by setting a first return spring and a second return spring on the first extension shaft and the second extension shaft respectively, the limit plate and the lever block can automatically return to the preset safe position (e.g., normally open or normally closed when power is lost), ensuring the reliable opening of the indoor evacuation passage in case of emergency power failure.

[0043] Specifically, after the second motor is de-energized, the second return spring compresses, causing the lever stop to open and restrict the external lever block, meaning the lever stop is in the locked position and the door cannot be opened from the outside. Simultaneously, the first motor is de-energized, the first return spring extends, and the limit plate switches to a second position that allows the inner lever block to rotate, ensuring emergency opening from the inside.

[0044] According to another specific embodiment of the present invention, an electric lock is disclosed, which further includes:

[0045] A pull plate extends along the height of the lock housing, with one end connected to the other end of the lever stop and the other end connected to one end of the second extension shaft. The second extension shaft drives the lever stop to switch between the locked position and the unlocked position via the pull plate.

[0046] By adopting the above technical solution and adding a pull plate extending along the height direction, vertical motion linkage between the second motor and the lever stop is achieved. Changing the drive transmission direction from a horizontal to a vertical layout effectively utilizes the height space within the lock housing, optimizes the overall structural configuration, and facilitates a more compact lock body design.

[0047] According to another specific embodiment of the present invention, an electric lock is disclosed, which further includes:

[0048] An inner handle is connected to the inner lever to drive the inner lever to rotate;

[0049] An outer handle is connected to the outer lever to drive the outer lever to rotate.

[0050] By adopting the above technical solution, corresponding inner and outer handles are connected to the inner and outer levers respectively, allowing the electric lock to retain electronic control and authentication functions while being compatible with traditional manual operation. Users can rotate either handle to rotate the corresponding lever, thereby actuating the bolt and manually opening the door. This not only provides a reliable mechanical emergency opening method for power outages or emergencies but also ensures convenience for daily use. Attached Figure Description

[0051] Figure 1 A perspective view of the electric lock according to an embodiment of the present invention is shown;

[0052] Figure 2 A schematic diagram of a partial electric lock according to an embodiment of the present invention is shown. Figure 1 ;

[0053] Figure 3 A schematic diagram of a partial electric lock in a first position according to an embodiment of the present invention is shown. Figure 1 ;

[0054] Figure 4 This diagram illustrates a partial electric lock in a second position according to an embodiment of the present invention. Figure 1 ;

[0055] Figure 5 A partial schematic diagram of the interior of the electric lock according to an embodiment of the present invention is shown;

[0056] Figure 6 A schematic diagram of the inner and outer paddles in an embodiment of this utility model is shown;

[0057] Figure 7 This diagram illustrates the connection between the inner paddle, outer paddle, and paddle stop block in an embodiment of the present invention. Figure 1 ;

[0058] Figure 8 Show Figure 7 Cross-sectional view along the EE direction;

[0059] Figure 9 This diagram illustrates the connection between the inner paddle, outer paddle, and paddle stop block in an embodiment of the present invention. Figure 2 ;

[0060] Figure 10 A schematic diagram of the side plate of an embodiment of the present invention is shown;

[0061] Figure 11 A schematic diagram of a partial electric lock in a first position according to an embodiment of the present invention is shown. Figure 2 ;

[0062] Figure 12 This diagram illustrates a partial electric lock in a second position according to an embodiment of the present invention. Figure 2 ;

[0063] Figure 13 A schematic diagram of a partial electric lock according to an embodiment of the present invention is shown. Figure 2 ;

[0064] Figure 14 A schematic diagram of a partial electric lock according to an embodiment of the present invention is shown. Figure 3 .

[0065] Figure label:

[0066] Electric lock 100;

[0067] Lock case 110; cavity 111; side plate 112; limiting hole 1121;

[0068] Locking tongue 120;

[0069] Inner lever 131; outer lever 132;

[0070] Limiting piece 140; First end 141; Second end 142;

[0071] First motor 151; first extension shaft 1511; first return spring 1512; second motor 152; second extension shaft 1521; second return spring 1522;

[0072] 160; 161; 162; 163;

[0073] 170mm pull plate;

[0074] Inner handle 181; outer handle 182;

[0075] 190° pivot. Detailed Implementation

[0076] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0077] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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 the utility model.

[0079] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0080] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 embodiment based on the specific circumstances.

[0081] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0082] For ease of subsequent description, the embodiments of this application first exemplarily define the X direction, Y direction, Z direction, A direction, B direction, C direction, and D direction. For example... Figure 2 As shown, the X direction is the length direction of the lock case 110; the Y direction is the width direction of the lock case 110; the Z direction is the height direction of the lock case 110; the A direction is the forward direction; the B direction is the reverse direction; the C direction is the first direction; and the D direction is the second direction. The X, Y, and Z directions intersect each other in pairs. The A direction is opposite to the B direction, and the C direction is opposite to the D direction.

[0083] refer to Figure 1 , Figure 2 This application provides an electric lock 100, including: a lock housing 110, a bolt 120, an inner lever block 131, an outer lever block 132, a limiting plate 140, a first motor 151, a second motor 152, a lever stop 160, a pull plate 170, an inner handle 181, and an outer handle 182. The lock housing 110 has a cavity 111 and a side plate 112. The bolt 120 extends along the length direction of the lock housing 110 (…). Figure 2 The locking tongue 120 is movable within the cavity 111 in the X direction, and can extend out of the cavity 111 or retract into the cavity 111.

[0084] refer to Figure 1 , Figure 2 In this embodiment, the inner lever 131 is rotatably connected to the lock housing 110, and one end is connected to one end of the latch 120 to drive the other end of the latch 120 to retract and extend; the outer lever 132 is rotatably connected to the lock housing 110, and one end is connected to one end of the latch 120 to drive the other end of the latch 120 to retract and extend. The latch 120 can move along a first direction (… Figure 2 The latch 120 can move to the extended state in the second direction (C direction) and can move along the second direction (C direction) to the extended state. Figure 2 The inner lever 131 and the outer lever 132 can both independently drive the bolt 120 to move, realizing the bidirectional opening function of the door from the inside and outside.

[0085] refer to Figure 1 , Figure 2 In this embodiment, the inner handle 181 is engaged with the inner lever 131 to drive the inner lever 131 to rotate; the outer handle 182 is engaged with the outer lever 132 to drive the outer lever 132 to rotate.

[0086] In some possible embodiments, the connection between the inner handle 181 and the inner lever 131 may include, but is not limited to, a snap-fit ​​connection, such as a threaded connection, a pin connection, or an adhesive connection, as long as the inner lever 131 can be driven to rotate by rotating the inner handle 181. The connection between the outer handle 182 and the outer lever 132 may include, but is not limited to, a snap-fit ​​connection, such as a threaded connection, a pin connection, or an adhesive connection, as long as the outer lever 132 can be driven to rotate by rotating the outer handle 182. The embodiments of this application do not limit this.

[0087] By connecting corresponding inner handles 181 and outer handles 182 to the inner and outer levers 131 and 132 respectively, the electric lock 100 retains electronic control and authentication functions while being compatible with traditional manual operation. Users can rotate either handle to rotate the corresponding lever, thereby actuating the bolt 120 to manually open the door. This not only provides a reliable mechanical emergency opening method for power outages or emergencies but also ensures convenience for daily use.

[0088] refer to Figure 2 , Figure 3 , Figure 4 In this embodiment, along the width direction of the lock case 110 ( Figure 2 (In the Y direction), the outer lever 132 and the inner lever 131 are spaced apart.

[0089] refer to Figure 2 , Figure 3 , Figure 4 In this embodiment, the limiting piece 140 is disposed within the cavity 111 and has a first end 141 and a second end 142. The first end 141 and the second end 142 are disposed at opposite ends of the limiting piece 140. The limiting piece 140 is L-shaped, and the second end 142 extends along the width direction.

[0090] In some possible implementations, the shape of the limiting piece 140 includes, but is not limited to, L-shape, and can be arc-shaped, straight plate-shaped, inclined plate-shaped, etc., as long as the first end 141 can be connected to the first protruding shaft 1511 described below, and the second end 142 can restrict the rotation of the inner push block 131. The embodiments of this application do not limit this.

[0091] refer to Figure 2 , Figure 3 , Figure 4 In this embodiment, the first motor 151 is disposed inside the cavity 111 and fixedly connected to the lock housing 110. It has a first extending shaft 1511, which is connected to the first motor 151 in a manner that allows it to move along its length. The first extending shaft 1511 is connected to the first end 141 to drive the limiting piece 140 to a first position (e.g., ...). Figure 3 ), second position (such as Figure 4 Switch between )

[0092] For example, the first motor 151 can be a solenoid, a rotary motor, or a piezoelectric ceramic actuator, etc., which can drive the first extended shaft 1511 to move along the length direction. It can be selected according to actual needs.

[0093] refer to Figure 2 , Figure 3 , Figure 4In this embodiment, in the first position, the second end 142 is simultaneously located directly above the other end of the inner lever 131 and the other end of the outer lever 132, thereby restricting the positive ( Figure 2 In the middle (direction A) rotation; in the second position, the second end 142 is not directly above the other end of the inner block 131 and the other end of the outer block 132, and the inner block 131 and the outer block 132 can rotate in the forward direction.

[0094] In some possible implementations, in the first position, the second end 142 may not be directly above the other end of the outer lever 132, but only needs to be directly above the other end of the inner lever 131. This application does not limit this implementation.

[0095] The first motor 151 drives the limit plate 140 to switch between two positions, thereby restricting the rotation and contact of the inner toggle block 131. For example, when the first motor 151 is energized, the limit plate 140 is in the first position, meeting the indoor unlocking authentication requirements in high-security scenarios; when the second motor 152 is de-energized, the limit plate 140 is in the second position, ensuring that the limit plate 140 is in an unrestricted state in emergency situations such as power outages, allowing indoor personnel to quickly open the door and evacuate without a key, effectively balancing the dual needs of safety control and emergency escape.

[0096] refer to Figure 2 , Figure 3 , Figure 4 In this embodiment, the first motor 151 is located above the locking tongue 120, and the second motor 152 is located below the locking tongue 120.

[0097] In some possible implementations, the first motor 151 may also be located below the bolt 120, and the second motor 152 may also be located above the bolt 120, as long as the height direction of the lock housing 110 is maintained ( Figure 2 (in the Z direction), the first motor 151 and the second motor 152 can be located on both sides of the locking tongue 120, and the specific location of the two is not limited in the embodiments of this application.

[0098] By arranging the first motor 151 and the second motor 152 on the upper and lower sides of the latch 120 respectively, the internal space of the cavity 111 is fully utilized, the internal structural layout of the lock body is optimized, and the overall size of the lock body is reduced. At the same time, the upper and lower split structure helps to isolate the movement paths of the two drive mechanisms, avoid mutual interference, and improve control accuracy and operational stability.

[0099] refer to Figure 3 , Figure 4In this embodiment, when the first motor 151 is energized, it can drive the first extending shaft 1511 to move in the first direction, thereby causing the limiting piece 140 to reverse ( Figure 3 When the first motor 151 is de-energized, the first extension shaft 1511 can move in the second direction, thereby causing the limit plate 140 to rotate in the second direction, placing the limit plate 140 in the second position. The inner lever 131 cannot rotate in the forward direction and cannot drive the latch 120 to retract. When the first motor 151 is de-energized, the first extension shaft 1511 can move in the second direction, thereby causing the limit plate 140 to rotate in the forward direction, placing the limit plate 140 in the second position. The inner lever 131 can then rotate in the forward direction to drive the latch 120 to retract.

[0100] By controlling the on / off state of the first motor 151, the limit plate 140 automatically switches between different positions. When powered on, the first extension shaft 1511 moves in the first direction, causing the limit plate 140 to rotate in the opposite direction and be in the first position, which can lock the inner lever 131 and ensure that the door is safely closed; when powered off, the restriction is released, the first extension shaft 1511 moves in the second direction, causing the limit plate 140 to rotate in the forward direction and be in the second position, so that people inside can directly rotate the inner lever 131 to drive the latch 120 to retract, realizing rapid evacuation without a key in an emergency.

[0101] refer to Figure 3 , Figure 4 In this embodiment, the first motor 151 is provided with a first return spring 1512. The first return spring 1512 is sleeved on the first extension shaft 1511, with one end connected to the first end 141 and the other end connected to the first motor 151. In the first position, the first return spring 1512 is in a compressed state; in the second position, the first return spring 1512 is in an extended state.

[0102] For example, when the first motor 151 is powered on, the first extension shaft 1511 moves in the first direction and compresses the first return spring 1512, while driving the limiting plate 140 to rotate to the first position, restricting the rotation of the inner toggle block 131, so that the door cannot be opened directly from the inside; when the first motor 151 is powered off, the first return spring 1512 extends based on its own pre-stored elastic force, pushes the first extension shaft 1511 to move in the second direction, and drives the limiting plate 140 to rotate to the second position, releasing the restriction on the inner toggle block 131, so that the inner toggle block 131 can rotate, and the door can be opened directly from the inside.

[0103] refer to Figure 3 , Figure 4 and combined Figure 2 In this embodiment, the lever stop 160 is disposed in the cavity 111 in a manner that allows it to move along the length direction, and the second end 142 is located above the first through groove 162.

[0104] refer to Figure 3 , Figure 4 In this embodiment, the second motor 152 is provided with a second extension shaft 1521. One end of the second extension shaft 1521 is fixedly connected to the lock housing 110. The second extension shaft 1521 is connected to the second motor 152 in a way that it can move along the length direction. One end of the second extension shaft 1521 is connected to the other end of the lever stop 160, which is used to drive the limit screw 161 to switch between the locked position and the unlocked position.

[0105] For example, when the second motor 152 is energized, the lever stop 160 is in the unlocked position; when the second motor 152 is de-energized, the lever stop 160 is in the locked position.

[0106] In some possible implementations, the second motor 152 may be a solenoid, a rotary motor, or a piezoelectric ceramic actuator, etc., which can be selected according to actual needs. This application does not limit this.

[0107] By setting a limiting screw 161 on the lever stop 160, which is independently controlled by the second motor 152, the locking and unlocking of the outer lever 132 can be controlled independently of the inner lever 131. Through coordinated control of the limiting plate 140 by the first motor 151, for example: when the first motor 151 and the second motor 152 are energized, i.e., the limiting plate 140 is in the first position (i.e., simultaneously limiting the rotation of the inner lever 131 and the outer lever 132), the lever stop 160 is in the unlocked position, enabling a "two-way authentication followed by unlocking" security mode; when the first motor 151 and the second motor 152 are de-energized, i.e., the limiting plate 140 is in the second position, the lever stop 160 is in the locked position, enabling a "required authentication outdoors, no authentication required indoors" security mode. This provides a flexible and reliable mechanical redundancy mechanism for rapid evacuation in emergencies while meeting strict security management requirements.

[0108] refer to Figure 3 , Figure 4 In this embodiment, the second return spring 1522 is sleeved on the second extension shaft 1521, with one end fixedly connected to the other end of the second extension shaft 1521 and the other end connected to the second motor 152; in the locked position, the second return spring 1522 is in a compressed state; in the unlocked position, the second return spring 1522 is in an extended state.

[0109] For example, when the second motor 152 is de-energized, the second motor 152 moves in the second direction and compresses the second return spring 1522, while driving the lever stop 160 to move to the locked position; when the first motor 151 is energized, the second return spring 1522 extends based on its pre-stored elastic force, pushing the second motor 152 to move in the first direction and driving the lever stop 160 to move to the unlocked position.

[0110] In conjunction with the above, by setting a first return spring 1512 and a second return spring 1522 on the first extension shaft 1511 and the second extension shaft 1521 respectively, the limit plate 140 and the lever stop 160 can automatically return to the preset safe position (e.g., normally open or normally closed when power is off) when the power is lost, ensuring the reliable opening of the indoor evacuation passage in case of emergency power failure.

[0111] Specifically, after the second motor 152 is de-energized, the second return spring 1522 is compressed, causing the lever stop 160 to drive the limit screw 161 to open the restriction on the outer lever block 132, that is, the lever stop 160 is in the locked position, and the door cannot be opened from the outside. At the same time, the first motor 151 is de-energized, the first return spring 1512 extends, driving the limit plate 140 to switch to the second position that allows the inner lever block 131 to rotate, ensuring emergency opening from the inside.

[0112] refer to Figure 5 In this embodiment, the pull plate 170 extends along the height direction, with one end connected to the other end of the lever stop 160 and the other end connected to one end of the second extension shaft 1521. The second extension shaft 1521 drives the lever stop 160 to switch between the locked and unlocked positions via the pull plate 170. The pull plate 170 has an L-shaped plate structure.

[0113] In some possible implementations, the shape of the pull plate 170 may include, but is not limited to, an L-shaped plate structure capable of connecting the lever stop 160 and the second extension shaft 1521. For example, it may be a rod-shaped connector, a C-shaped plate structure, an inclined plate structure, etc.

[0114] By adding a pull plate 170 extending along the height direction, vertical motion linkage between the second motor 152 and the lever stop 160 is achieved. Changing the drive transmission direction from a horizontal to a vertical layout effectively utilizes the height space within the lock housing 110, optimizes the overall structural configuration, and facilitates a more compact size design for the lock body.

[0115] refer to Figure 6 , Figure 7In this embodiment, the lever stop 160 includes: a limiting screw 161, a first through groove 162, and a second through groove 163. The first through groove 162 extends through the lever stop 160 along the height direction of the lock housing 110. The other end of the inner lever block 131 is disposed within the first through groove 162, with a gap between it and the first through groove 162, allowing the inner lever block 131 to rotate within the first through groove 162. The second through groove 163 extends through the lever stop 160 along the height direction. The other end of the outer lever block 132 is disposed within the second through groove 163, with a gap between it and the second through groove 163, allowing the outer lever block 132 to rotate within the second through groove 163. Along the width direction, the first through groove 162 and the second through groove 163 are spaced apart. The limiting screw 161 is disposed within the second through groove 163 and can abut against the outer lever block 132.

[0116] By creating independent first through slots 162 and second through slots 163 on the lever stop 160, the movement paths of the inner lever block 131 and the outer lever block 132 are physically isolated, preventing them from interfering with each other. A limit screw 161 is positioned within the first through slot 162 to independently engage and limit the outer lever block 132. This allows for precise control of the locking state of the outer lever block 132 without affecting the indoor escape function, effectively improving the reliability of the independent control and the flexibility of the mode configuration of the electric lock 100.

[0117] In some possible implementations, the limiting device includes, but is not limited to, the limiting screw 161, which may be a stop, a positioning pin, a sensor switch, etc., as long as it can limit the rotation of the outer lever block 132. The embodiments of this application do not limit this.

[0118] In some possible implementations, the lever stop 160 may not be provided with the first through groove 162 and the second through groove 163. As long as one end of the lever stop 160 is provided with a limiting screw 161, and the limiting screw 161 corresponds to the other end of the outer lever block 132, it can restrict the rotation of the outer lever block 132. This application does not limit this.

[0119] refer to Figure 7 , Figure 8 In this embodiment, the first through groove 162 and the second through groove 163 are both provided at one end of the lever stop block 160, and one end of the lever stop block 160 is distributed in an E-shape.

[0120] refer to Figure 7 , Figure 8 , Figure 9 In this embodiment, when in the locked position (e.g.) Figure 7 , Figure 8 When the outer lever block 132 is in the unlocked position (e.g., when the limit screw 161 is directly above the outer lever block 132, the outer lever block 132 can abut against the limit screw 161 to limit the forward rotation of the outer lever block 132); when in the unlocked position (e.g., when the limit screw 161 is directly above the outer lever block 132, the outer lever block 132 can abut against the limit screw 161 to Figure 9When the limit screw 161 is not directly above the outer lever block 132, the outer lever block 132 cannot abut against the limit screw 161, and the outer lever block 132 can rotate in the forward direction.

[0121] refer to Figure 10 In this embodiment, the lock case 110 is provided with a side plate 112, and the side plate 112 is provided with a limiting hole 1121. The limiting block penetrates the side plate 112 along the width direction; the limiting hole 1121 is arc-shaped, and the central angle corresponding to the limiting hole 1121 is α ( Figure 10 (As shown in a) is 10°.

[0122] By providing a limiting hole 1121 on the side plate 112, the second end 142 can be guided to move along the limiting hole 1121, effectively restraining the lateral displacement of the limiting piece 140 during movement and improving its positional accuracy and operational stability. At the same time, the two ends of the limiting hole 1121 provide clear mechanical limits for the first and second positions of the limiting piece 140, ensuring the accuracy and reliability of the limiting state and enhancing the durability and control consistency of the overall structure.

[0123] In some possible implementations, the shape of the limiting hole 1121 may include, but is not limited to, an arc shape, and may be an oblong hole, a straight groove or a curved guide groove, etc., as long as it can limit the movement stroke of the second end 142. The implementation of this application does not limit this.

[0124] In some possible implementations, the degree of the central angle α is not limited to 10°, and can be 5°, 7°, 12°, 23°, 30°, etc., as long as 5°≤a≤30° is satisfied, depending on the actual stroke of the limiting piece 140.

[0125] By limiting the shape of the limiting hole 1121 and the corresponding central angle range, the travel of the limiting piece 140 is effectively controlled, making the entire electric lock 100 compact.

[0126] refer to Figure 11 , Figure 12 In this embodiment, a portion of the second end 142 passes through the limiting hole 1121 and is movable along the limiting hole 1121; in the first position (e.g. Figure 11 When the second end 142 is located at one end of the limiting hole 1121, the second end 142 is located at one end of the limiting hole 1121; in the second position (e.g.) Figure 12 When the second end 142 is located at the other end of the limiting hole 1121, the second end 142 is located at the other end of the limiting hole 1121.

[0127] refer to Figure 13 , Figure 14 In this embodiment, the limiting piece 140 is rotatably connected to the side plate 112 via a rotating shaft 190. The rotating shaft 190 is located between the first end 141 and the second end 142, and one end of the rotating shaft 190 is fixedly connected to the side plate 112.

[0128] in, Figure 13 This is a schematic diagram showing that the limit piece 140 is in the second position and the toggle block is in the locked position. At this time, the inner toggle block 131 can rotate forward, while the outer toggle block 132 cannot rotate forward. That is, the door can be opened directly from the inside, but card authentication is required to open the door from the outside. Figure 14 This is a schematic diagram showing the limit piece 140 in the second position and the toggle block in the unlocked position. At this time, the inner toggle block 131 can rotate forward and the outer toggle block 132 can also rotate forward, meaning that the door can be opened directly from the inside or the outside.

[0129] When the limit plate 140 is in the first position, the inner toggle block 131 cannot rotate forward, and the outer toggle block 132 cannot rotate forward, regardless of whether the toggle block is in the locked or unlocked position. That is, card authentication is required to open the door from both inside and outside.

[0130] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An electric lock, characterized in that, include: Lock case, with a cavity; The latch is provided in the cavity in a manner that allows it to move along the length of the lock housing; An inner lever is rotatably connected to the lock housing, and one end is connected to the bolt to drive the bolt to retract and extend. An outer lever is rotatably connected to the lock housing, and one end is connected to the bolt to drive the bolt to retract and extend; the outer lever and the inner lever are spaced apart along the width direction of the lock housing. A limiting piece is disposed in the cavity and has a first end and a second end; A first motor is disposed in the cavity and has a first extension shaft. The first extension shaft is connected to the first motor in a manner that allows it to move along the length direction and is connected to the first end to drive the limiting piece to switch between a first position and a second position. In the first position, the second end is located directly above the other end of the inner lever to restrict the inner lever from rotating in the forward direction. In the second position, the second end is not directly above the other end of the inner lever, and the inner lever can rotate in the forward direction.

2. The electric lock as described in claim 1, characterized in that, When the first motor is powered on, it can drive the first protruding axis to move in the first direction, thereby causing the limiting piece to be in the first position; the other end of the inner lever can abut against the second end, the inner lever cannot rotate in the forward direction, and cannot drive the locking tongue to retract; When the first motor is de-energized, the first extending shaft can move in the second direction, causing the limiting piece to be in the second position, and the inner lever can rotate in the forward direction to cause the locking tongue to retract.

3. The electric lock as described in claim 1, characterized in that, In the first position, the second end is located directly above the other end of the outer lever block to restrict the forward rotation of the outer lever block; In the second position, the second end is not directly above the other end of the outer lever, and the outer lever can rotate in the forward direction.

4. The electric lock as described in claim 1, characterized in that, The lock housing is provided with a side plate, the side plate is provided with a limiting hole, and the limiting block penetrates the side plate along the width direction; Part of the second end passes through the limiting hole and can move along the limiting hole; In the first position, the second end is located at one end of the limiting hole; in the second position, the second end is located at the other end of the limiting hole.

5. The electric lock as described in claim 4, characterized in that, The limiting hole is arc-shaped, and the central angle corresponding to the limiting hole is α, where 5°≤α≤30°.

6. The electric lock as described in claim 3, characterized in that, Also includes: A lever stop is disposed in the cavity in a manner that allows it to move along the length direction. One end of the lever stop is provided with a limiting screw, which corresponds to the other end of the outer lever block. The second end is located above one end of the lever stop. The second motor is provided with a second extension shaft, which is connected to the second motor in a manner that is movable along the length direction. One end of the second extension shaft is connected to the other end of the lever block, and is used to drive the limit screw to switch between the locked position and the unlocked position. In the locked position, the limiting screw is directly above the outer lever block, and the other end of the outer lever block can abut against the limiting screw to restrict the forward rotation of the outer lever block; When in the unlocked position, the limiting screw is not directly above the outer lever block, and the outer lever block can rotate in the forward direction.

7. The electric lock as described in claim 6, characterized in that, The lever stop includes: The first through groove extends through the lever stop block along the height direction of the lock housing, and the other end of the inner lever block is located in the first through groove; The second through groove extends through the lever stop block along the height direction, and the other end of the outer lever block is located in the second through groove; The limiting screw is located in the second through groove.

8. The electric lock as described in claim 6, characterized in that, The first motor is provided with a first return spring, which is sleeved on the first extended shaft, with one end connected to the first end and the other end connected to the first motor; in the first position, the first return spring is in a compressed state; in the second position, the first return spring is in an extended state. The second motor is provided with a second return spring, which is sleeved on the second extension shaft. One end of the second return spring is fixedly connected to the other end of the second extension shaft, and the other end is connected to the second motor. In the locked position, the second return spring is in a compressed state; in the unlocked position, the second return spring is in an extended state.

9. The electric lock as described in claim 6, characterized in that, Also includes: A pull plate extends along the height of the lock housing, with one end connected to the other end of the lever stop and the other end connected to one end of the second extension shaft. The second extension shaft drives the lever stop to switch between the locked position and the unlocked position via the pull plate.

10. The electric lock as described in claim 1, characterized in that, Also includes: An inner handle is connected to the inner lever to drive the inner lever to rotate; An outer handle is connected to the outer lever to drive the outer lever to rotate.

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