Locking mechanism for a safe handle

Abstract

Locking mechanism for a safe handle, characterized in that it comprises the following: a handle (1); a handle shaft (2) which is installed on the handle (1) and rotates synchronously with the handle; a clutch disc (3) which is installed on the handle shaft (2) and rotates synchronously with the handle shaft; a mechanism gear (4) arranged on the handle shaft (2), wherein the clutch disc (3) is located between the mechanism gear (4) and the handle (1), wherein the mechanism gear (4) is provided on a side facing the clutch disc (3) with a gear projection (41), wherein the clutch disc (3) is provided on a side facing the mechanism gear (4) with a clutch disc projection (31) which can engage in the gear projection (41); an elastic element (5) that can act on the clutch disc (3) to hold the clutch disc (3) along the handle shaft (2) with a tendency to move in a direction towards the mechanism gear (4) and to engage with the mechanism gear; a main sliding plate (6) which is arranged laterally; a motor (7) which is arranged on the main sliding plate (6); a motor separating plate (8) which is arranged on the main sliding plate (6); a right-hand bolt connecting plate (9) arranged on the main sliding plate (6), wherein both the right-hand bolt connecting plate (9) and the main sliding plate (6) are engaged with the mechanism gear (4), wherein the movement of the mechanism gear (4) moves the right-hand bolt connecting plate (9) in a direction opposite to the main sliding plate (6); a left safe bolt (101), wherein an outer end of the main sliding plate (6) is connected to and attached to the left safe bolt (101), the main sliding plate moving the left safe bolt to extend outwards or retract inwards; a right-hand safe bolt (102), wherein the outer end of the right-hand bolt connecting plate is connected to and attached to the right-hand safe bolt (102), the right-hand bolt connecting plate (9) moving the right-hand safe bolt to move outwards or retract inwards; a motor rocker arm (11) which is installed on an output shaft of the motor (7) and moves the motor separating plate (8) with the forward and reverse rotation of the motor so that it moves left and right relative to the main sliding plate (6); a first motor switch (12) which is triggered by the moving motor separating plate (8) to stop the rotation of the motor (7); a second motor switch (13) which is triggered by the moving main sliding plate (6) to rotate the stopped motor (7) in a reverse direction; and an electromagnet (14) which has a separated and a suction state, wherein in the separated state it limits the movement of the main sliding plate (6) and in the suction state it allows the main sliding plate (6) to move over the obstacle of the electromagnet.

Description

Technical field

[0001] The present invention relates to a safe, in particular a locking mechanism for a safe handle. State of the art

[0002] As people's living standards continue to improve, the number of valuables increases, and so does the demand for all types of safes. Currently, many types of safes are available on the market, most of which are controlled by electronic locks and electronic fingerprint locks. The use of electronic locks and electronic fingerprint locks offers users great convenience and ease of use. However, if the switch of a conventional safe with an electronic lock is in a locked position, especially if it relies on the suction of the electromagnet to unlock it, the electromagnet can be damaged by forceful handling, such as forcibly turning the mechanism with the handle. This not only poses a security risk but also reduces the lifespan of the safe.In summary, the existing structure of the locking mechanism for the safe handle needs further improvement. Disclosure of the registration

[0003] The technical problem to be solved by the present invention is to provide, in response to the prior art, a locking mechanism for a safe handle which can automatically implement a handle coupling and avoid a direct impact on the mechanism of the safe in the locked state.

[0004] To solve the above technical problems, the present invention uses the following technical solution: a locking mechanism for a safe handle, characterized in that it comprises the following: a hand movement; a handle shaft that is installed on the handle and rotates synchronously with the handle; a clutch disc that is installed on the handle shaft and rotates synchronously with the handle shaft; a mechanism gear arranged on the handle shaft, wherein the clutch disc is located between the mechanism gear and the handle, wherein the mechanism gear is provided with a gear projection on a side facing the clutch disc, and wherein the clutch disc is provided with a clutch disc projection on a side facing the mechanism gear which can engage in the gear projection; an elastic element that can act on the clutch disc to hold the clutch disc along the handle shaft with a tendency to move in a direction towards the mechanism gear and to engage with the mechanism gear; a main sliding plate that is arranged laterally; a motor that is located on the main sliding plate; a motor separating plate that is arranged on the main sliding plate; a right-hand bolt connecting plate arranged on the main sliding plate, wherein both the right-hand bolt connecting plate and the main sliding plate are held in engagement with the mechanism gear, wherein the movement of the mechanism gear moves the right-hand bolt connecting plate in a reverse direction to the main sliding plate; a left safe bolt, wherein an outer end of the main sliding plate is connected to and attached to the left safe bolt, the main sliding plate moving the left safe bolt to extend outwards or retract inwards; a right-hand safe bolt, wherein the outer end of the right-hand bolt connecting plate is connected to and attached to the right-hand safe bolt, the right-hand bolt connecting plate moving the right-hand safe bolt to move outwards or retract inwards; a motor rocker arm that is installed on an output shaft of the motor and moves the motor separating plate with the forward and reverse rotation of the motor so that it moves left and right relative to the main sliding plate; a first motor switch that is triggered by the moving motor separating plate to stop the rotation of the motor; a second motor switch, triggered by the moving main slide plate, to rotate the stopped motor in the opposite direction; and an electromagnet having a separated and a suction state, wherein in the separated state it limits the movement of the main sliding plate and in the suction state it allows the main sliding plate to move over the obstacle of the electromagnet.

[0005] Preferably, the motor separating plate is arranged on a front side of the main sliding plate, the right-hand bolt connecting plate being arranged on a rear side of the main sliding plate, the handle shaft passing successively through the motor separating plate, the main sliding plate and the right-hand bolt connecting plate; and the motor separating plate is arranged between the clutch disc and the mechanism gear, the elastic element being a spring mounted on the handle shaft, with the two ends of the spring bearing against the clutch disc and the handle respectively.

[0006] Furthermore preferably, the side of the clutch disc facing the mechanism gear is an inclined surface which is inclined outwards from the circumference towards the center, wherein the motor separating plate is provided with a guide rocker arm which fits together with the inclined surface, wherein during the movement of the motor separating plate to the left and right the clutch disc projection and the gear projection are in an engagement or disengagement state by means of the contact fit of the guide rocker arm with the inclined surface.

[0007] In order for the mechanism gear to engage with both the main sliding plate and the right-hand bolt connecting plate, the right-hand bolt connecting plate is located close to the main sliding plate, the main sliding plate being provided with horizontally distributed first through-holes, while the right-hand bolt connecting plate being provided with horizontally distributed second through-holes, wherein a first horizontal tooth section is formed on an upper edge of the first through-hole, which engages with the mechanism gear, while a second horizontal tooth section is formed on a lower edge of the second through-hole, which engages with the mechanism gear, and wherein the mechanism gear is simultaneously engaged with both the first horizontal tooth section and the second horizontal tooth section.

[0008] To limit the movement of the main sliding plate, the right bolt connecting plate, and the motor separating plate, a first limiting structure is arranged to limit the relative movement of the main sliding plate and the right bolt connecting plate between the main sliding plate and the right bolt connecting plate, wherein the first limiting structure comprises a first limiting hole, a second limiting hole, and a limiting rod, wherein the first limiting hole is arranged transversely on a bottom surface of the main sliding plate, while the second limiting hole is arranged transversely on the bottom surface of the right bolt connecting plate, wherein the limiting rod is attached to the right bolt connecting plate and inserted into the first limiting hole and the second limiting hole;and a second limiting structure for limiting the movement of the motor separating plate is arranged between the main sliding plate and the motor separating plate, the second limiting structure comprising a limiting post attached to the main sliding plate and a rod hole arranged transversely on the motor separating plate, the limiting post extending within the rod hole.

[0009] To make the use of the safe more secure, the locking mechanism for a safe handle further comprises an upper safe bolt and a lower safe bolt, wherein the upper safe bolt and the lower safe bolt extend outwards synchronously with the left safe bolt and the right safe bolt or retract inwards synchronously by means of a linkage mechanism.

[0010] The first motor switch and the second motor switch can be installed in various configurations. Preferably, the first motor switch is installed on the main sliding plate, with the motor located at a left end section of the main sliding plate; preferably, the first motor switch is located at a right end section of the main sliding plate, with the motor separating plate moving to the right until it touches the first motor switch and triggers the first motor switch; preferably, the second motor switch is installed on the back of a safe door, with the main sliding plate moving to the left until it touches the second motor switch and triggers the second motor switch.

[0011] To ensure that the safe door can be opened without problems even in the event of a failure of the electronic lock, the locking mechanism for a safe handle also includes an emergency release mechanism, the emergency release mechanism comprising the following: an emergency lock that can be tilted by an external force; an emergency lock toggle lever installed on the emergency lock and moved downwards or upwards by tilting the emergency lock, wherein the emergency lock toggle lever acts on an electromagnet during the movement to bring the electromagnet into a suction state; an emergency gear plate installed on the main slide plate that moves up and down synchronously with the emergency lock rocker arm, and moves the main slide plate to move synchronously left and right; and an emergency gear attached to the handle shaft and rotating synchronously with the handle shaft, the emergency gear being located on a rear side of the mechanism gear, the emergency gear plate moving down or up to engage with the emergency gear.

[0012] To limit the movement of the emergency gear plate, the emergency gear plate is located at the rear of the right-hand bolt connection plate, the emergency gear plate being provided with a transverse limiting hole, and the emergency lock rocker arm is located below the emergency gear plate, with limiting elements distributed in the forward and reverse directions and extending within the transverse limiting hole being arranged on the top of the emergency lock rocker arm.

[0013] Furthermore, preferably a rocker arm extending transversely is arranged in a central part of the emergency lock rocker arm, wherein the electromagnet has an outwardly projecting suction switch, so that during the movement of the emergency lock rocker arm the rocker arm tilts the suction switch to bring the electromagnet into a suction state.

[0014] Compared to the prior art, the present invention has the following advantages: The locking mechanism for a safe handle is in a 360-degree idle state after the safe door is locked and the clutch disc is disengaged from the mechanism gear by the internal motor. When the correct password and fingerprints are entered to open the safe door, the motor rotates and drives the mechanism gear and clutch disc, allowing the handle to rotate the mechanism and open the safe door smoothly. Furthermore, the handle's engagement process requires no key and is fully automated by the internal motor, which significantly enhances theft protection and reduces direct impacts on the mechanism when locked, thereby extending the safe's service life. Drawings of the disclosure Fig. Figure 1 shows a front view of an embodiment of the present invention; Fig. Figure 2 shows a schematic representation of the three-dimensional structure of an embodiment of the present invention; Fig. Figure 3 shows a front view of an embodiment of the present invention when the safe is locked; Fig. Figure 4 shows a front view of an embodiment of the present invention when the safe is opened; Fig. Figure 5 shows a schematic representation of the three-dimensional structure of an embodiment of the present invention from a rear view; Fig. Figure 6 shows a schematic representation of the three-dimensional structure of an embodiment of the present invention without the emergency release mechanism; Fig. Figure 7 shows a schematic representation of the structure of an embodiment of the present invention when the clutch disc and the mechanism gear are separated from each other; Fig. Figure 8 shows a schematic representation of the structure of an embodiment of the present invention when the clutch disc and the mechanism gear mesh with each other; Fig. Figure 9 shows a schematic representation of the structure of a motor separating plate of an embodiment of the present invention; Fig. Figure 10 shows a schematic representation of the structure of a clutch disc of an embodiment of the present invention; Fig. 11 shows a schematic representation of the structure of a mechanism gear of an embodiment of the present invention; Fig. Figure 12 shows a schematic representation of the structure of a main sliding plate of an embodiment of the present invention; Fig. Figure 13 shows a schematic representation of the structure of a right-hand bolt connection plate of an embodiment of the present invention. Specific embodiments

[0015] The present invention is described in more detail below in conjunction with the accompanying drawings and exemplary embodiments.

[0016] As in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. As shown in Figure 11, the locking mechanism for a safe handle in this embodiment comprises a handle 1, a handle shaft 2, a clutch disc 3, a mechanism gear 4, an elastic element 5, a main sliding plate 6, a motor 7, a motor separating plate 8, a right bolt connecting plate 9, a left safe bolt 101, a right safe bolt 102, an upper safe bolt 103 and a lower safe bolt 104, a motor rocker arm 11, a first motor switch 12, a second motor switch 13, an electromagnet 14, an emergency lock 15, an emergency lock rocker arm 16, an emergency gear plate 17, an emergency gear 18 and other components.

[0017] The handle 1 is located on the front of the safe door 20; the handle shaft 2 is installed on the handle 1 and rotates synchronously with the handle, and the handle shaft 2 passes successively through the motor separating plate 8, the main sliding plate 6, and the right-hand bolt connecting plate 9. A waist-shaped hole 33 is formed in the center of the clutch disc 3, which is adapted to the handle shaft 2, and the clutch disc 3 can rotate synchronously with the handle shaft 2 as well as move axially relative to the handle shaft 2. The clutch disc 3 is provided on a side facing the mechanism gear 4 with a clutch disc projection 31, the clutch disc projection 31 being located close to the waist-shaped hole 33, and the side of the clutch disc 3 facing the mechanism gear 4 being an inclined surface 32 that slopes outward from the circumference toward the center.

[0018] A mechanism gear 4 is arranged on the handle shaft 2, with the clutch disc 3 located between the mechanism gear 4 and the handle 1. The mechanism gear 4 is provided on one side facing the clutch disc 3 with a gear projection 41 that can engage with the clutch disc projection. The mechanism gear 4 has a circular hole 42 in its center, and the mechanism gear 4 is not fixed to the handle shaft 2.The mechanism gear 4 cannot be set in rotation directly by the rotation of the handle shaft 2; The elastic element 5 is a spring which is mounted on the handle shaft 2, with the two ends of the spring respectively bearing against the clutch disc 3 and the handle 1, and the spring is able to act on the clutch disc 3, so that the clutch disc 3 is held along the handle shaft 2 with a tendency to move in the direction towards the mechanism gear 4 and to engage with the mechanism gear.

[0019] The main sliding plate 6 is arranged transversely on the rear of the safe door 20, and a motor installation hole 64 is formed in the main sliding plate 6, and the motor 7 is attached to the main sliding plate 6 through the motor installation hole 64. The motor separating plate 8 is arranged on the main sliding plate 6 and is located on the front of the main sliding plate 6, and the motor separating plate 8 is located between the clutch disc 3 and the mechanism gear 4. The motor separating plate 8 is provided with a guide rocker arm 81 that engages with the inclined surface 32 of the clutch disc 3, wherein, during the movement of the motor separating plate 8 to the left and right, the clutch disc projection 31 and the gear projection 41 are in an engaged or disengaged state by means of the contact fit of the guide rocker arm 81 with the inclined surface 32.

[0020] As in Fig. 12 and Fig.As shown in Figure 13, a right-hand bolt connecting plate 9 is arranged on the main sliding plate 6 and is located on the rear side of the main sliding plate 6, wherein both the right-hand bolt connecting plate 9 and the main sliding plate 6 are held in engagement with the mechanism gear 4, wherein the movement of the mechanism gear 4 moves the right-hand bolt connecting plate 9 in a direction opposite to the main sliding plate 6.In particular, the right bolt connecting plate 9 is located close to the main sliding plate 6, the main sliding plate 6 being provided with horizontally distributed first through holes 61, while the right bolt connecting plate 9 being provided with horizontally distributed second through holes 91, wherein a first horizontal tooth section 62 is formed on an upper edge of the first through hole 61, which engages with the mechanism gear 4, while a second horizontal tooth section 92 is formed on a lower edge of the second through hole 91, which engages with the mechanism gear 4, and wherein the mechanism gear 4 engages simultaneously with both the first horizontal tooth section 62 and the second horizontal tooth section 92.

[0021] A first limiting structure for limiting the relative movement of the main sliding plate 6 and the right bolt connecting plate 9 is arranged between the main sliding plate 6 and the right bolt connecting plate, in particular the first limiting structure comprises a first limiting hole 63, a second limiting hole 93 and a limiting rod 94, wherein the first limiting hole 63 is arranged transversely on a bottom surface of the main sliding plate 6, while the second limiting hole 93 is arranged transversely on the bottom surface of the right bolt connecting plate 9, wherein the limiting rod 94 is attached to the right bolt connecting plate 9 and is inserted into the first limiting hole 63 and the second limiting hole 93;and a second limiting structure for limiting the movement of the motor separating plate is arranged between the main sliding plate 6 and the motor separating plate 8, the second limiting structure comprising a limiting post 65 attached to the main sliding plate 6 and a rod hole 82 arranged transversely on the motor separating plate 8, the limiting post 65 extending within the rod hole 82. In addition, there is also a limiting structure between the motor 7 and the motor separating plate 8. In particular, the motor separating plate 8 is provided with transversely distributed rod-shaped limiting holes 83, and the motor is attached by a cam 71 extending into the rod-shaped limiting holes 83, such that the movement of the motor separating plate 8 to the left and right is limited by the cam 71.

[0022] An outer end of the main sliding plate 6 is connected to and attached to the left safe bolt 101, the main sliding plate 6 moving the left safe bolt 101 to extend outwards or retract inwards, and the outer end of the right bolt connecting plate 9 is connected to and attached to the right safe bolt 102, the right bolt connecting plate 9 moving the right safe bolt 102 to move outwards or retract inwards. Furthermore, the upper safe bolt 103 and the lower safe bolt 104 extend outwards or retract inwards synchronously with the left safe bolt 101 and the right safe bolt 102 by means of a linkage mechanism 19.The linkage mechanism 19 of the upper safe bolt 103 and the left safe bolt 101 serves as an example, showing that the linkage mechanism 19 comprises a horizontal plate 191, which moves synchronously to the left and right with the left safe bolt 101, and a vertical plate 192, which moves synchronously up and down with the upper safe bolt 103. A rod-shaped horizontal hole 193 is formed in a lower section of the horizontal plate 191, a rod-shaped vertical hole 194 is formed in a lower section of the vertical plate 192, and a rod-shaped inclined hole 195 is formed in an upper section of the vertical plate 192, which is inclined from top to left.A sliding rod 196 is arranged between the horizontal plate 191 and the vertical plate 192, passing through both the horizontal hole 193 and the vertical hole 194. A fastening rod 197 is arranged in the upper section of the horizontal plate 191, extending into the inclined hole 195. When both the left safe bolt 101 and the upper safe bolt 103 extend outwards, the sliding rod 196 moves to the right end of the horizontal hole 193 and to the lower end of the vertical hole 194. The fastening rod 197 is located at the lower end of the inclined hole 195.When both the left safe bolt 101 and the upper safe bolt 103 are retracted inwards, the horizontal plate 191 is moved to the right to move the vertical plate 192 downwards, and when fully retracted, the sliding rod 196 is moved to the left end of the horizontal hole 193 and to the upper end of the vertical hole 194, and the fastening rod 197 is located at the upper end of the inclined hole 195. The linkage mechanism 19 of the lower safe bolt 104 and the left safe bolt 101 can be referred to as the linkage mechanism 19 described above and is not further elaborated or described here. A motor rocker arm 11, installed on an output shaft of the motor 7, moves the motor separator plate 8 with the forward and reverse rotation of the motor so that it moves left and right relative to the main slide plate 6. The motor separator plate 8 is provided with a rocker hole 84 that aligns with the motor rocker arm 11. The first motor switch 12 is installed on the main slide plate 6, with the motor 7 and the first motor switch 12 located at a left end section and a right end section, respectively, of the main slide plate 6. The motor separator plate 8 moves to the right until it contacts the first motor switch 12 and triggers the first motor switch 12. When the first motor switch is triggered, the motor 7 stops rotating.The second motor switch 13 is installed on the back of a safe door 20, with the main sliding plate 6 moving to the left until it touches the second motor switch 7 and triggers the second motor switch 13; when the second motor switch 13 is triggered, the motor 7 rotates in the opposite direction.

[0023] Furthermore, the electromagnet 14 is located below the main sliding plate 6, and a tilting block 142 is arranged on the upper side of the electromagnet 14. The electromagnet 14 has two states: a disconnected state and a suction state. In the disconnected state, the tilting block 142 cannot be tilted, thus restricting the movement of the main sliding plate 6. In the suction state, the main sliding plate 6, as it moves to the right, can act on the tilting block 142 to rotate it into the interior of the electromagnet 14, so that the tilting block 142 no longer restricts the main sliding plate 6's movement to the right.

[0024] The electronic locking process of this handle locking mechanism operates as follows: After the safe door 20 is locked, the left safe bolt 101, the right safe bolt 102, the upper safe bolt 103, and the lower safe bolt 104 are in an outward-extending position, the motor 7 stops rotating, and the motor rocker arm 11 is located on the left side. At this point, the spring is compressed, and the clutch disc 3 is disengaged from the mechanism gear 4, resulting in the handle being in neutral. When the safe door 20 is opened, the motor 7 begins to rotate, provided the correct password and fingerprint have been entered. The motor 7 rotates to turn the motor rocker arm 11 to the right and then the motor separating plate 8 to the right.When the motor separating plate 8 rotates backwards through the interaction of its guide rocker arm 81 and the inclined surface 32 of the clutch disc 3, the pre-tensioned spring pushes the clutch disc 3 in the direction facing the mechanism gear 4, so that the clutch disc 3 engages with the mechanism gear 4 and the motor separating plate 8, moving to the right, triggers the first motor switch 12, thus stopping the motor from rotating. After the clutch disc 3 and the mechanism gear 4 engage, the electromagnet 14 is drawn in, and the mechanism gear 4 is rotated clockwise by turning the handle 1. This clockwise rotation of the mechanism gear 4 moves the main sliding plate 6 to the right and drives the right-hand bolt connecting plate 9 to move to the left.At the same time, the upper safe bolt 103 moves downwards and the lower safe bolt 104 moves upwards to achieve smooth opening of the safe door 20.

[0025] Furthermore, the locking mechanism for the safe handle is equipped with an emergency release mechanism in addition to the electronic locking mechanism. Specifically, the emergency release mechanism comprises the emergency lock 15, the emergency lock toggle lever 16, the emergency gear plate 17, and the emergency gear 18, as well as other components. The emergency lock 15 can be tilted by external force. The emergency lock toggle lever 16 is installed on the emergency lock 15 and is moved downwards by the tilting of the emergency lock 15. During this movement, the emergency lock toggle lever 16 acts on an electromagnet 14 to bring the electromagnet into a suction state.The emergency gear plate 17 is installed on the main slide plate 6 and is located on the rear side of the right-hand bolt connection plate 9. The emergency gear plate 17 moves up and down synchronously with the emergency lock rocker arm 16, moving the main slide plate 6 synchronously to the left or right. The emergency gear 18 is attached to the handle shaft 2 and rotates synchronously with the handle shaft. The emergency gear 18 is located on the rear side of the mechanism gear 4, and the emergency gear plate 17 moves down or up to engage with the emergency gear 18.To limit the movement of the emergency gear plate 17, the emergency gear plate 17 is provided with a transverse limiting hole 171, and the emergency lock rocker arm 16 is located below the emergency gear plate 17, with limiting elements 161, distributed in the forward and reverse directions and extending within the transverse limiting hole 171, arranged on the upper side of the emergency lock rocker arm 16. Furthermore, a rocker arm 162, extending transversely, is arranged in a central part of the emergency lock rocker arm 16, the electromagnet 14 having an outwardly projecting suction switch 141, such that during the downward movement of the emergency lock rocker arm 16, the rocker arm 162 tilts the suction switch 141 to bring the electromagnet 14 into a suction state. Before the emergency release begins, the clutch disc 3 and the mechanism gear 4 are in the separated state, and the handle is in neutral.

[0026] The operating sequence of the emergency release mechanism is as follows: Manual actuation of the emergency lock 15 causes the emergency lock rocker arm 16 to move downwards, and the emergency lock rocker arm 16 moves the emergency gear plate 17 downwards. During the downward movement of the emergency lock rocker arm 16, the rocker arm 162 of the emergency lock rocker arm flips the suction switch 141 to bring the electromagnet 14 into a suction state. The emergency gear plate 17 moves downwards until it engages the emergency gear 18, and since the emergency gear 18 can rotate synchronously with the handle shaft 2, turning the handle 1 clockwise can cause the emergency gear 18 to rotate clockwise, which in turn causes the emergency gear plate 17 to move to the right.Since the emergency gear plate 17 and the main slide plate 6 move synchronously to the left and right, the emergency gear plate 17, moving to the right, can move the main slide plate 6 to move synchronously to the right. Furthermore, since the main slide plate 6 and the right bolt connecting plate 9 are always engaged with the mechanism gear 4 and can move in the opposite direction, the movement of the main slide plate 6 to the right can cause the right bolt connecting plate 9 to move to the left. This, in turn, causes the left safe bolt 101, the right safe bolt 102, the upper safe bolt 103, and the lower safe bolt 104 to move synchronously inwards, thus unlocking the device.

[0027] The foregoing are only preferred embodiments of the present invention, and it should be noted that for a person of ordinary knowledge in the field, a number of improvements and embodiments can be made without derogation from the principles of the present invention, and these improvements and embodiments should also be considered as being within the scope of protection of the present invention.

Claims

[1] Locking mechanism for a safe handle, characterized by that it includes the following: a handle (1); a handle shaft (2) which is installed on the handle (1) and rotates synchronously with the handle; a clutch disc (3) which is installed on the handle shaft (2) and rotates synchronously with the handle shaft; a mechanism gear (4) arranged on the handle shaft (2), wherein the clutch disc (3) is located between the mechanism gear (4) and the handle (1), wherein the mechanism gear (4) is provided on a side facing the clutch disc (3) with a gear projection (41), wherein the clutch disc (3) is provided on a side facing the mechanism gear (4) with a clutch disc projection (31) which can engage in the gear projection (41); an elastic element (5) that can act on the clutch disc (3) to hold the clutch disc (3) along the handle shaft (2) with a tendency to move in a direction towards the mechanism gear (4) and to engage with the mechanism gear; a main sliding plate (6) which is arranged laterally; a motor (7) which is arranged on the main sliding plate (6); a motor separating plate (8) which is arranged on the main sliding plate (6); a right-hand bolt connecting plate (9) arranged on the main sliding plate (6), wherein both the right-hand bolt connecting plate (9) and the main sliding plate (6) are engaged with the mechanism gear (4), wherein the movement of the mechanism gear (4) moves the right-hand bolt connecting plate (9) in a direction opposite to the main sliding plate (6); a left safe bolt (101), wherein an outer end of the main sliding plate (6) is connected to and attached to the left safe bolt (101), the main sliding plate moving the left safe bolt to extend outwards or retract inwards; a right-hand safe bolt (102), wherein the outer end of the right-hand bolt connecting plate is connected to and attached to the right-hand safe bolt (102), the right-hand bolt connecting plate (9) moving the right-hand safe bolt to move outwards or retract inwards; a motor rocker arm (11) which is installed on an output shaft of the motor (7) and moves the motor separating plate (8) with the forward and reverse rotation of the motor so that it moves left and right relative to the main sliding plate (6); a first motor switch (12) which is triggered by the moving motor separating plate (8) to stop the rotation of the motor (7); a second motor switch (13) which is triggered by the moving main sliding plate (6) to rotate the stopped motor (7) in a reverse direction; and an electromagnet (14) which has a separated and a suction state, wherein in the separated state it limits the movement of the main sliding plate (6) and in the suction state it allows the main sliding plate (6) to move over the obstacle of the electromagnet. [2] Locking mechanism for a safe handle according to claim 1, characterized by, that the motor separating plate (8) is arranged on a front side of the main sliding plate (6), wherein the right-hand bolt connecting plate (9) is arranged on a rear side of the main sliding plate (6), wherein the handle shaft (2) passes successively through the motor separating plate (8), the main sliding plate (6) and the right-hand bolt connecting plate (9); and that the motor separating plate (8) is arranged between the clutch disc (3) and the mechanism gear (4), wherein the elastic element (5) is a spring which is mounted on the handle shaft, with the two ends of the spring bearing against the clutch disc (3) and the handle (1), respectively. [3] Locking mechanism for a safe handle according to claim 1, characterized by, that the side of the clutch disc (3) facing the mechanism gear (4) is an inclined surface (32) inclined outwards from the circumference towards the center, wherein the motor separating plate (8) is provided with a guide rocker arm (81) that fits with the inclined surface (32), wherein during the movement of the motor separating plate (8) to the left and right the clutch disc projection (31) and the gear projection (41) are in an engagement or disengagement state by means of the contact fit of the guide rocker arm (81) with the inclined surface (32). [4] Locking mechanism for a safe handle according to claim 1, characterized by, that the right bolt connecting plate (9) is located close to the main sliding plate (6), wherein the main sliding plate (6) is provided with horizontally distributed first through holes (61), while the right bolt connecting plate (9) is provided with horizontally distributed second through holes (91), wherein a first horizontal tooth section (62) is formed on an upper edge of the first through hole (61) which engages with the mechanism gear (4), while a second horizontal tooth section (92) is formed on a lower edge of the second through hole (91) which engages with the mechanism gear (4), and wherein the mechanism gear (4) engages simultaneously with both the first horizontal tooth section (62) and the second horizontal tooth section (92). [5] Locking mechanism for a safe handle according to claim 1, characterized by, that a first limiting structure for limiting the relative movement of the main sliding plate (6) and the right bolt connecting plate (9) is arranged between the main sliding plate (6) and the right bolt connecting plate, wherein the first limiting structure comprises a first limiting hole (63), a second limiting hole (93) and a limiting rod (94), wherein the first limiting hole (63) is arranged transversely on a bottom surface of the main sliding plate (6), while the second limiting hole (93) is arranged transversely on the bottom surface of the right bolt connecting plate (9), wherein the limiting rod (94) is attached to the right bolt connecting plate (9) and is inserted into the first limiting hole (63) and the second limiting hole (93);and that a second limiting structure is arranged to limit the movement of the motor separating plate between the main sliding plate (6) and the motor separating plate (8), wherein the second limiting structure comprises a limiting post (65) attached to the main sliding plate (6) and a rod hole (82) arranged transversely on the motor separating plate (8), the limiting post (65) extending within the rod hole (82). [6] Locking mechanism for a safe handle according to claim 1, characterized by , that it further comprises an upper safe bolt (103) and a lower safe bolt (104), wherein the upper safe bolt (103) and the lower safe bolt (104) extend outwards synchronously with the left safe bolt (101) and the right safe bolt (102) or retract synchronously inwards by means of a linkage mechanism (19). [7] Locking mechanism for a safe handle according to claim 1, characterized by, that the first motor switch (12) is installed on the main slide plate (6), and wherein the motor (7) is located at a left end section of the main slide plate, wherein the first motor switch (12) is located at a right end section of the main slide plate, wherein the motor separating plate (8) is moved to the right until it touches the first motor switch (12) and triggers the first motor switch (12), wherein the second motor switch (13) is installed on a rear side of a safe door (20), wherein the main slide plate (6) is moved to the left until it touches the second motor switch (13) and triggers the second motor switch (13). [8] Locking mechanism for a safe handle according to any one of claims 1 to 7, characterized by , that it further comprises an emergency release mechanism, the emergency release mechanism comprising the following: an emergency lock (15) which can be tilted by an external force; an emergency lock rocker arm (16) installed on the emergency lock (15) and moved downwards or upwards by tilting the emergency lock, wherein the emergency lock rocker arm acts on an electromagnet during the movement to bring the electromagnet into a suction state; an emergency gear plate (17) which is installed on the main slide plate (6) and moves down and up synchronously with the emergency lock rocker arm (16) and moves the main slide plate to move synchronously to the left and right; and an emergency gear (18) which is attached to the handle shaft (2) and rotates synchronously with the handle shaft, the emergency gear (18) being located on a rear side of the mechanism gear (4), the emergency gear plate (17) moving downwards or upwards to engage with the emergency gear (18). [9] Locking mechanism for a safe handle according to claim 8, characterized by, that the emergency gear plate (17) is located on the rear side of the right bolt connection plate (9), wherein the emergency gear plate (17) is provided with a transverse limiting hole (171), and that the emergency lock rocker arm (16) is located below the emergency gear plate (17), wherein limiting elements (161) distributed in the forward and reverse directions and extending within the transverse limiting hole (171) are arranged on the top side of the emergency lock rocker arm (16). [10] Locking mechanism for a safe handle according to claim 8, characterized by , that a rocker arm (162) extending transversely is arranged in a central part of the emergency lock rocker arm (16), wherein the electromagnet (14) has an outwardly projecting suction switch (141) so that during the movement of the emergency lock rocker arm the rocker arm (162) tilts the suction switch (141) to bring the electromagnet into a suction state.

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