Electric bolt lock

Abstract

The present invention relates to an electric bolt lock with reasonable structure and lower cost. The electric bolt lock includes a housing, a motor and a bolt head, and is characterized in that: a bolt head slide groove is provided in the housing, the bolt head can be slidably arranged in the bolt head slide groove, a limiting slide groove perpendicular to the bolt head slide groove is provided in the housing, a limiting member can be slidably arranged in the limiting slide groove, a reset spring for driving the limiting member to reset is provided at the rear end of the limiting member, the motor is transmission-connected to the limiting member, a toggle member transmission-connected to the motor is rotatably provided in the housing, and the toggle member is transmission-connected to the bolt head through a transmission torsion spring. The electric bolt lock realizes the locking cylinder and the locking tongue by driving the bolt head through the motor, and also has an emergency unlocking function.

Description

Technical Field

[0001] The invention relates to a lock, in particular to an electric lock bolt used on a safe. Background Art

[0002] At present, the fingerprint lock or password lock of general safes all use electromagnetic valves as lock bolts. After the lock bolt is locked to the lock tongue, the door of the safe cannot be opened. However, the electromagnetic valve is easy to lose its function under strong vibration and cannot play the role of locking the lock tongue. Some thieves use this safety defect to steal. Therefore, the safety factor of safes using electromagnetic valves is relatively low. In order to solve the problems existing in the prior art, the applicant provides a shockproof safe bolt, which is driven by a motor to achieve bolting. The motor structure is stable and not easily affected by vibration. Even if the motor fails, emergency unlocking can be achieved. However, the structure of this shockproof safe bolt is complex and the manufacturing cost is high. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention innovatively provides an electric bolt lock with a reasonable structure and lower cost.

[0004] This electric bolt lock includes a shell, a motor and a bolt head, and is characterized in that: a bolt head slide groove is provided in the shell, the bolt head can be slidably arranged in the bolt head slide groove, a limiting slide groove perpendicular to the bolt head slide groove is provided in the shell, a limiting member can be slidably provided in the limiting slide groove, a reset spring for driving the limiting member to reset is provided at the rear end of the limiting member, the motor is transmission-connected to the limiting member, a toggle member transmission-connected to the motor is rotatably provided in the shell, and the toggle member is transmission-connected to the bolt head through a transmission torsion spring.

[0005] An emergency slide groove parallel to the bolt head slide groove is provided in the shell, and an emergency unlocking piece is provided in the emergency slide groove. The emergency unlocking piece has an unlocking portion and a pushing portion. The front end of the limiting piece has an unlocking slope, and the unlocking portion has a pushing slope that acts on the unlocking slope to drive the limiting piece to move. The pushing portion can push the bolt head to move, and there is a distance between the action point of the pushing portion and the force point of the bolt head, and the distance is greater than or equal to the limiting distance of the limiting piece on the bolt head.

[0006] A supporting protrusion is arranged in the emergency sliding groove, the emergency unlocking member has a slot hole, the supporting protrusion is located in the slot hole of the emergency unlocking member, and a return spring is arranged between the supporting protrusion and the front end of the slot hole.

[0007] The motor is connected to the toggle gear through a transmission gear, the limiting member has a force-bearing column, and the toggle gear has a toggle edge surface for toggle the force-bearing column.

[0008] The toggle gear is provided with a first gear, the toggle member is provided with a second gear, and the first gear is meshed with the second gear.

[0009] The toggle member is provided with a round hole, the bolt head is provided with a clamping slot, one end of the transmission torsion spring is arranged in the round hole, and the other end is arranged in the clamping slot.

[0010] According to an electric lock bolt provided by the present invention, a motor drives a bolt head to move so as to realize a lock cylinder and a lock tongue, and at the same time, it also has an emergency unlocking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a schematic diagram of the structure of the object; Figure 3 Schematic diagram of the structure inside the shell Figure 1 ; Figure 4 Schematic diagram of the structure inside the shell Figure 2 . DETAILED DESCRIPTION

[0012] like Figure 1 As shown, the electric bolt lock includes a housing 1, a motor 3 and a bolt head 2. The motor 3 and the bolt head 2 are both installed in the housing 1.

[0013] like Figure 1 and Figure 2 As shown, a bolt head slot 10 is provided in the housing 1, and the bolt head 2 can be slidably arranged in the bolt head slot 10, that is, the bolt head 2 can slide in and out of the housing 1 in the bolt head slot 10. When the bolt head 2 comes out of the housing 1, it can restrict the lock tongue, so that the lock tongue locks the door; when the bolt head 2 retracts into the housing 1, the restriction on the lock tongue is released, so that the lock tongue is no longer locked when the door handle is turned. In order to move the bolt head 2, as shown in FIG. Figure 3As shown, a toggle member 4 is rotatably provided in the housing 1 and is connected to the motor 3. The toggle member 4 is connected to the bolt head 2 through the transmission torsion spring 13 (specifically, a round hole 40 is provided on the toggle member 4, the bolt head 2 has a slot 21, one end of the transmission torsion spring 13 is provided in the round hole 40, and the other end is provided in the slot 21); driven by the motor 3, the toggle member 4 rotates to drive the bolt head 2 to move through the transmission torsion spring 13. Of course, when the bolt head 2 extends out of the housing 1, it needs to be restricted. For this purpose, a restriction slot 12 perpendicular to the bolt head slot 10 is provided in the housing 1. A restriction member 5 is slidably provided in the restriction slot 12. The rear end of the restriction member 5 is provided with a reset spring 6 for driving the restriction member 5 to reset. The motor 3 is connected to the restriction member 5 through transmission; when the motor drives the restriction member 5 to move backward, the front end of the restriction member 5 no longer restricts the bolt head 2, and the bolt head 2 retracts under the tension of the transmission torsion spring 13, so that the bolt head 2 enters the housing 1. The reason why the transmission torsion spring 13 is used to realize the transmission connection between the toggle member 4 and the bolt head 2 is that under the same transmission mechanism, during the period when the limiting member 5 moves to one side and releases the restriction, the toggle member 4 needs to rotate a certain angle, and the rotation process of the toggle member 4 can deform the transmission torsion spring 13 to generate tension. When the limiting member 5 completes the release of the restriction, the transmission torsion spring 13 can immediately pull the bolt head 2 inward. In order to reset the limiting member 5, a reset spring 6 is provided at the rear end of the limiting member 5 to drive the limiting member 5 to reset.

[0014] The working principle of this electric lock is as follows: when the safe is in the locked state, Figure 3 As shown, the front end of the limiting member 5 limits the bolt head 2, so that the bolt head 2 cannot move, thereby locking the lock tongue. When unlocking is required, the fingerprint or password matches, and the motor 4 drives the limiting member 5 to move backward ( Figure 3 The bolt head 2 is pulled downward by the toggle member 4 driven by the motor 3, and the bolt head 2 is pulled downward by the toggle member 4. When the limiter 5 is completely freed from the limiter, the bolt head 2 enters the housing 1, and the lock is unlocked. When the lock needs to be relocked, the motor 3 is reversed, the toggle member 4 rotates, and the toggle member 4 drives the bolt head 2 to move outward through the toggle spring 13. The limiter 5 is reset under the action of the reset spring 6, and the bolt head 2 is re-restricted, so that the bolt head 2 re-locks the bolt tongue.

[0015] The motor 3 or the circuit may fail. In order to achieve emergency unlocking in this case, an emergency slide groove 11 parallel to the bolt head slide groove 10 is provided in the shell 1, and an emergency unlocking member 9 is also provided in the emergency slide groove 11. The emergency unlocking member 9 has an unlocking portion 90 and a pushing portion 91. The front end of the limiting member 5 has an unlocking slope 50. The unlocking portion 90 has a pushing slope 93 that acts on the unlocking slope 50 to drive the limiting member 5 to move. The pushing portion 91 can push the bolt head 2 to move. There is a distance between the action point of the pushing portion 91 and the force point of the bolt head 2, and the distance is greater than or equal to the limiting distance of the limiting member 5 on the bolt head 2. When emergency unlocking is required, the emergency unlocking member 9 is pulled by the emergency mechanical lock, and the unlocking portion 90 of the emergency unlocking member 9 first acts on the unlocking inclined surface 50 of the limiting member 5 to move the limiting member 5 backward, so that the limiting member 5 is released from restriction. Since there is a distance between the action point of the pushing portion 91 and the force point of the bolt head 2, the distance is greater than or equal to the restriction distance of the limiting member 5 on the bolt head 2. In this way, when the limiting member 5 is released from restriction, the pushing portion 91 of the emergency unlocking member 9 acts on the bolt head 2 and pushes the bolt head 2 to move (such as Figure 4 As shown, it specifically acts on the side extension block 25 of the bolt head 2, and the side extension block 25 can be an integral structure with the bolt head 2, or can be welded or connected to the bolt head 2 by other existing connection methods), so that the bolt head 2 enters the shell 1, thereby realizing emergency unlocking.

[0016] In order to enable the emergency unlocking member 9 to automatically reset, a support protrusion 14 is provided in the emergency sliding groove 11, and the emergency unlocking member 9 has a slot hole 92. The support protrusion 14 is located in the slot hole 92 of the emergency unlocking member 9, and a return spring 15 is provided between the support protrusion 14 and the front end of the slot hole 92. When the emergency unlocking member 9 needs to be reset, the return spring 15 can push the emergency unlocking member 9 to move back. Of course, the emergency unlocking member 9 can also be moved back by an emergency key.

[0017] As described above, the motor 3 can simultaneously drive the limiting member 5 to move and the shifting member 4 to rotate. In order to realize this transmission structure, Figure 3 and Figure 4As shown, the motor 3 is connected to the toggle gear 7 through the transmission gear 8, the limiting member 5 has a force column 51, and the toggle gear 7 has a toggle side surface 70 for toggle the force column 51. When the motor 3 drives the toggle gear 7 to rotate, the toggle gear 7 acts on the force column 51 of the limiting member 5 through its toggle side surface 70, so that the limiting member 5 can be moved. In order to simultaneously drive the toggle member 4 to rotate, a first gear 71 is provided on the toggle gear 7, and a second gear 41 is provided on the toggle member 4, and the first gear 71 is meshed with the second gear 41. When the motor 3 drives the toggle gear 7 to rotate, the toggle member 4 also rotates through the transmission of the first gear 71 and the second gear 41, and the rotation of the toggle member 4 can drive the bolt head 2 to move through the transmission torsion spring 13. Of course, there are various transmission structures, and there are other transmission structures that can achieve the above functions, which are not listed here one by one.

[0018] like Figure 1 and Figure 3 As shown, the motor 3 is connected to the toggle member 4 through the transmission gear 8. The transmission gear 8 can be composed of a plurality of gears 8 of different diameters, so as to achieve the purpose of speed reduction. Compared with the motor with a speed reduction structure, the structure cost of the present invention is lower.

Claims

1. An electric bolt lock, comprising a housing (1), a motor (3) and a bolt head (2), characterized in that: The housing (1) is provided with a bolt head slot (10), the bolt head (2) is slidably arranged in the bolt head slot (10), the housing (1) is provided with a limiting slot (12) perpendicular to the bolt head slot (10), a limiting member (5) is slidably arranged in the limiting slot (12), a rear end of the limiting member (5) is provided with a return spring (6) for driving the limiting member (5) to return, the motor (3) is transmission-connected to the limiting member (5), a toggle member (4) transmission-connected to the motor (3) is rotatably arranged in the housing (1), and the toggle member (4) is transmission-connected to the bolt head (2) via a transmission torsion spring (13).

2. The electric bolt lock according to claim 1, characterized in that: An emergency slide groove (11) parallel to the bolt head slide groove (10) is provided in the housing (1), an emergency unlocking member (9) is provided in the emergency slide groove (11), the emergency unlocking member (9) comprises an unlocking portion (90) and a pushing portion (91), a front end of the limiting member (5) comprises an unlocking inclined surface (50), the unlocking portion (90) comprises a pushing inclined surface (93) acting on the unlocking inclined surface (50) to drive the limiting member (5) to move, the pushing portion (91) can push the bolt head (2) to move, a distance is provided between the action point of the pushing portion (91) and the force bearing point of the bolt head (2), and the distance is greater than or equal to a limiting distance of the bolt head (2) by the limiting member (5).

3. The electric bolt lock according to claim 2, characterized in that: A support protrusion (14) is provided in the emergency sliding groove (11), the emergency unlocking member (9) has a slot hole (92), the support protrusion (14) is located in the slot hole (92) of the emergency unlocking member (9), and a return spring (15) is provided between the support protrusion (14) and the front end of the slot hole (92).

4. The electric bolt lock according to claim 1 or 2, characterized in that: The motor (3) is transmission-connected to the toggle gear (7) via a transmission gear (8); the limiting member (5) has a force-bearing column (51); and the toggle gear (7) has a toggle edge surface (70) for toggle the force-bearing column (51).

5. The electric bolt lock according to claim 4, characterized in that: The toggle gear (7) is provided with a first gear (71), the toggle member (4) is provided with a second gear (41), and the first gear (71) is meshed with the second gear (41).

6. The electric bolt lock according to claim 1, characterized in that: The toggle member (4) has a circular hole (40), the bolt head (2) has a slot (21), one end of the transmission torsion spring (13) is disposed in the circular hole (40), and the other end is disposed in the slot (21).

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