An electrically operated lock

Abstract

The utility model relates to the field of electric lock discloses an electric lock, including the casing and the lock catch that sets on the casing, the lock catch middle part articulates on the casing and the both ends of lock catch are respectively the locking end that is located the casing outside and the drive end that is located the casing inside, the drive end has the driving part that moves in connection, and the driving part is driven by the electric control part of setting on the casing and reciprocating translation and with its reciprocating translation drive drive end and turn over to realize the locking of lock catch or turn over to realize the unlocking of lock catch, the electric lock in driving part and drive end movable connection, therefore driving part reciprocating translation can directly drive drive end and turn over or turn over, reduces the possibility that lock catch cannot open smoothly.

Description

Technical Field

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

[0002] The oven is equipped with an electric lock to prevent the oven door from being opened accidentally, ensuring safety during oven use.

[0003] Chinese Patent Application No. 201820110803.6 discloses a latch-type oven door lock. The lock includes a housing with a groove shape. A pressure rod and a latch are installed side by side at the front end of the groove. The pressure rod is elastically telescopically mounted on the housing. The latch is elastically rotatably connected to the housing by a compression spring. A push rod is installed in the rear part of the housing on the same side as the latch. The rotation of the latch is controlled by the extension and retraction of the push rod, which is controlled by a motor. The lock also includes a first micro switch and a second micro switch that are electrically connected to the motor via a PCB board.

[0004] When the oven door closes, the pressure rod springs back, activating the first microswitch. This triggers a motor controlled by the PCB board, causing a push rod to extend. This pushes the rear end of the latch upwards, while the front end flips downwards to lock the latch. Locking continues until the push rod moves to the second microswitch, at which point the PCB board stops the motor, completing the locking process. To unlock, the motor causes the push rod to retract in the opposite direction, disengaging from the latch. The front end of the latch, under the action of a compression spring, flips upwards to unlock the latch.

[0005] However, in the above solutions, the high temperature environment and the oven door being locked for a long time will cause the pressure spring to be in a deformed state for a long time, which will shorten the life of the pressure spring. As a result, when the pressure spring resets, it cannot return to the state that can drive the front end of the latch to lift up to complete the unlocking, ultimately causing the oven door to be unable to open. Utility Model Content

[0006] This invention addresses the shortcoming of existing technologies where the lock cannot be unlocked when the compression spring fails to return to its original position, by providing an electric lock that reduces the likelihood of the lock failing to open smoothly.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0008] An electric lock includes a housing and a latch disposed on the housing. The latch is hinged to the housing in the middle, and the two ends of the latch are a locking end located outside the housing and a driving end located inside the housing, respectively. A driving member is movably connected to the driving end. The driving member is driven by an electronic control component disposed on the housing to reciprocate and translate. As it reciprocates and translates, it drives the driving end to flip up to lock the latch or flip down to unlock the latch.

[0009] With the above solution, since the driving component is movably connected to the driving end, the driving component can be driven to move back and forth by the electronic control component, which can directly drive the driving end to flip up or down, ensuring that the locking end flips to lock or unlock, and reducing the possibility that the latch cannot be opened smoothly.

[0010] Preferably, the drive end is provided with a sliding groove that is inclined upward or downward toward the locking end, and a drive shaft is provided at the end of the drive component near the drive end. The drive shaft moves in the sliding groove and the drive end is rotated as the drive shaft moves.

[0011] Using the above scheme, the driving component reciprocates, causing the driving shaft to move along the recessed direction of the sliding groove and engage with the inner wall of the sliding groove through compression and sliding. This allows the driving end to flip up or down, thereby controlling the locking end to flip down to lock or flip up to unlock. The rigid fit between the driving shaft and the sliding groove ensures that the driving end can always be driven to flip by the driving shaft when the driving component moves.

[0012] Preferably, the electronic control components include a motor for reciprocating steering, a control component for controlling the starting and stopping of the motor, and a drive rod that is vertically protruding from the motor shaft, with one end of the drive rod away from the motor shaft being movably connected to the other end of the drive component away from the drive end.

[0013] Using the above scheme, the motor rotates in both directions, driving the drive rod to rotate in both directions as well. Because the drive rod and the drive component are movably connected, the drive component is driven to move back and forth. The control component controls the motor's start and stop, thereby controlling the rotation or stopping of the drive rod.

[0014] Preferably, the end of the drive member away from the drive end has a recessed mating groove on the side near the drive rod, and the end of the drive rod away from the motor shaft is inserted into the mating groove and drives the drive member to move back and forth as the motor rotates.

[0015] With the above solution, the drive rod and the drive component are always connected and do not disengage during the reciprocating movement of the drive component. Furthermore, due to the movable connection between the drive rod and the drive component, it is ensured that the drive rod can drive the drive component to reciprocate and translate when the motor rotates in both directions.

[0016] Preferably, the drive rod is integrally protruding from the outer ring wall of the drive ring, and the drive ring is concentrically sleeved and fixed to the motor shaft.

[0017] Preferably, the motor is a claw-pole synchronous motor, and the reciprocating switching of the motor's direction is controlled by the blocking structure.

[0018] Preferably, the blocking structure includes a cover covering the outside of the drive ring and a first clearance slot opened on the cover for the drive rod to pass through and reciprocate within a preset angle. When the drive rod rotates to abut against one side of the first clearance slot, it reverses direction.

[0019] Using the above scheme, the direction of rotation of the claw-pole synchronous motor is random at the moment of power-on, and it will rotate in the opposite direction when the resistance experienced by the claw-pole synchronous motor is greater than its maximum torque. Therefore, a blocking structure is required. When the drive rod is stationary in the locked state and needs to rotate from the locked state to the unlocked state to unlock, the motor is started by the control component. If the motor rotation is consistent with the desired direction, it can be directly rotated until unlocking; otherwise, if the motor rotation is opposite to the desired direction, the resistance increases after the drive rod rotates to abut against one side of the first clearance slot, driving the motor to change direction. After the motor changes direction, its rotation is consistent with the desired direction, and it continues to rotate until unlocking. Similarly, when the drive rod is stationary in the unlocked state and needs to be rotated from the unlocked state to the locked state to lock, the motor is started by the control component. If the motor rotation direction is consistent with the required direction, it can be directly rotated to lock. Conversely, if the motor rotation direction is opposite to the required direction, the resistance increases after the drive rod rotates to abut against the other side of the first clearance slot, driving the motor to change direction. After the motor changes direction, its rotation direction is consistent with the required direction, and it continues to rotate until it locks.

[0020] This utility model, by adopting the above technical solution, has significant technical effects:

[0021] 1. A blocking structure is set up so that when the direction of the motor at the moment of start-up is inconsistent with the required direction, the drive rod abuts against the side wall of the first clearance groove, so that the resistance on the motor shaft is greater than the maximum torque of the motor, thereby driving the motor to change direction and ensuring that the motor direction is consistent with the required direction, thus ensuring smooth locking or unlocking.

[0022] 2. The drive component moves closer to or further away from the drive end, causing the drive shaft to slide within the sliding groove and engage with the inner wall of the sliding groove through compression and sliding. This can drive the drive end to flip up or down, thereby controlling the locking end to flip down to lock or flip up to unlock. The rigid engagement between the drive shaft and the sliding groove ensures that the lock can always be driven to flip when the drive component moves, reducing the possibility that the lock cannot be opened smoothly. Attached Figure Description

[0023] Figure 1 This is an isometric view of an electric lock unlocking in one of the embodiments;

[0024] Figure 2 This is a top view of an electric lock being unlocked in one of the embodiments;

[0025] Figure 3 yes Figure 2 Sectional view at point AA;

[0026] Figure 4 This is a half-sectional schematic diagram of an electric lock in action during one of the embodiments.

[0027] Figure 5 This is a split view of an electric lock in one of the embodiments.

[0028] The parts referred to by the numbers in the above figures are as follows: 1. Housing; 2. Pressure rod; 3. Spring; 4. First micro switch; 5. Lock; 501. Locking end; 502. Driving end; 6. Driving component; 7. Driving shaft; 8. Sliding groove; 9. First protrusion; 10. Second protrusion; 11. Motor; 12. Driving ring; 13. Driving rod; 14. Mating groove; 15. Contact block; 16. Second micro switch; 17. Cover; 18. First clearance groove; 19. Second clearance groove; 20. Guide block; 21. Guide groove. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] Example

[0031] An electric lock, as shown in the reference Figures 1 to 5 The device includes a housing 1, with a pressure rod 2 telescopically attached to one end of the housing 1. A spring 3 is provided between the pressure rod 2 and the housing 1 along the telescopic direction of the pressure rod 2. When the spring 3 is in its initial state, the pressure rod 2 partially extends out of the housing 1.

[0032] A latch 5 is provided above the pressure rod 2. The latch 5 is hinged to the housing 1 in the middle. The front end of the latch 5 is located outside the housing 1 to form a locking end 501. The rear end of the latch 5 is located inside the housing 1 to form a driving end 502. The driving end 502 flips upward away from the pressure rod 2, causing the locking end 501 to flip downward towards the pressure rod 2 to lock. Similarly, the driving end 502 flips downward to reset, causing the locking end 501 to flip upward to unlock.

[0033] The upper end of the pressure rod 2 is provided with a first protrusion 9 protruding upwards, and the lower end of the locking end 501 is provided with a second protrusion 10 protruding downwards. When the pressure rod 2 partially extends out of the housing 1 in the initial state and the locking end 501 is away from the pressure rod 2 in the unlocked state, the upper end of the first protrusion 9 abuts against the lower end of the second protrusion 10. That is, the second protrusion 10 and the locking end 501 will not accidentally flip downwards.

[0034] A drive member 6 is installed inside the housing 1, moving linearly back and forth along the extension and retraction direction of the pressure rod 2. In this embodiment, the drive member 6 is a push rod. A drive shaft 7 is provided on one end of the drive member 6 near the drive end 502, and the axis of the drive shaft 7 is parallel to the hinge axis of the latch 5. A sliding groove 8 is provided on the drive end 502, which is inclined upward towards the locking end 501. The drive member 6 is located between the latch 5 and the pressure rod 2. During the reciprocating movement of the drive shaft 7 driven by the drive member 6, the drive shaft 7 always moves back and forth within the sliding groove 8 along the concave direction of the sliding groove 8. The inclined sliding groove 8 is to ensure that the drive shaft 7 can be squeezed and slid against the inner wall of the sliding groove 8 when it moves within the sliding groove 8. When the driving component 6 and the driving shaft 7 move away from the locking end 501, the driving shaft 7 engages with the inner wall of the sliding groove 8 above it, causing the driving end 502 to flip upwards and the locking end 501 to flip downwards to lock. When the driving component 6 and the driving shaft 7 move closer to the locking end 501, the driving shaft 7 engages with the inner wall of the sliding groove 8 below it, causing the driving end 502 to flip downwards and the locking end 501 to flip upwards to unlock. The side wall of the driving component 6 is provided with a guide block 20, and the housing 1 is provided with a guide groove 21 for the guide block 20 to be inserted and linearly guided along the moving direction of the pressure rod 2.

[0035] The movement of the drive component 6 is controlled by an electronic control component, which includes a motor 11 fixed on the housing 1. In this embodiment, the motor 11 is a claw-pole synchronous motor of model 49TYZ. The direction of rotation of the claw-pole synchronous motor is random at the moment of power-on, and it will rotate in the opposite direction when the resistance experienced by the claw-pole synchronous motor is greater than its maximum torque. A drive ring 12 is concentrically fixed on the motor shaft. A drive rod 13 is vertically protruding outward on the outer ring wall of the drive ring 12. The drive rod 13 and the drive ring 12 are integrally formed. A cover 17 is provided on the outside of the drive ring 12. A first clearance groove 18 is provided on the side of the cover 17 near the drive component 6. The first clearance groove 18 allows the end of the drive rod 13 away from the drive ring 12 to pass through the cover 17 and rotate. When the drive rod 13 rotates to abut against the side walls of the first clearance groove 18, the resistance increases and the direction is reversed. The first clearance groove 18 causes the drive rod 13 to reciprocate within a preset angle.

[0036] The end of the drive component 6 away from the drive end 502 has a recessed mating groove 14 on the side near the cover 17. The end of the drive rod 13 away from the drive ring 12 passes through the cover 17 and is inserted into the mating groove 14, and is movably connected with the mating groove 14. That is, the drive rod 13 and the mating groove 14 will not separate, and the drive rod 13 can rotate and slide longitudinally with the mating groove 14 to ensure that the drive rod 13 drives the drive component 6 to reciprocate and translate as the motor 11 rotates.

[0037] The opening and closing of the motor 11 is controlled by a control component, which includes the aforementioned pressure rod 2 and a contact block 15 integrally protruding outward on the outer ring wall of the drive ring 12. It also includes a first microswitch 4, a second microswitch 16 disposed within the housing 1, and a control module electrically connected to the first microswitch 4, the second microswitch 16, and the motor 11. A second clearance slot 19 is provided on the cover 17 for the contact block 15 to extend out of the cover 17 and rotate. The control module, as well as the connection, control program, and method between the control module, the first microswitch 4, the second microswitch 16, and the motor 11, are all existing technologies and will not be described in detail here.

[0038] When the oven door is open, the pressure rod 2 extends partially out of the housing 1, the locking end 501 flips upwards to be in the unlocked state, and the contact block 15 remains stationary away from the unlocked position of the second micro switch 16. When the oven door is closed, it will squeeze the pressure rod 2 to retract inwards and touch the first micro switch 4. The control module controls the motor 11 to start. When the motor 11 starts, the direction of rotation is random. If the motor 11 drives the contact block 15 to rotate closer to the second micro switch 16, it is the correct direction; if the motor 11 drives the contact block 15 to rotate away from the second micro switch 16, it is the wrong direction. The drive rod 13 rotates to abut against one side of the first clearance groove 18, which increases the resistance of the motor 11 to greater than the maximum torque of the motor 11, thereby driving the motor 11 to reverse direction. After the motor 11 reverses direction, it drives the contact block 15 to rotate closer to the second micro switch 16. When contact block 15 rotates close to the second micro switch 16 until it contacts the second micro switch 16, the control module controls the motor 11 to stop rotating. At this time, the drive rod 13 rotates to engage with the other side of the first clearance slot 18. During the rotation of contact block 15 close to the second micro switch 16, drive rod 13 rotates synchronously. The rotation of drive rod 13 drives drive member 6 to move away from locking end 501. As drive shaft 7 moves away from locking end 501 with drive member 6, its outer ring wall and the inner wall of sliding groove 8 above it are pressed and slid together, causing drive end 502 to flip upward and lock end 501 downward.

[0039] When unlocking is required, pressing the button on the oven that is electrically connected to the control module starts the motor 11, which then rotates at a preset speed for a preset duration before stopping. The direction of motor 11 when starting is random. If motor 11 drives contact 15 to rotate closer to its unlocked position, it is the correct direction. If motor 11 drives contact 15 away from its unlocked position, it is the wrong direction. The drive rod 13 rotates until it abuts against the side wall of the first clearance groove 18, increasing the resistance to motor 11's rotation to exceed its maximum torque. This causes motor 11 to quickly reverse direction, moving contact 15 closer to its unlocked position until it rotates at a preset speed for a preset duration before stopping. As the contact block 15 rotates towards its unlocking position, the drive rod 13 rotates synchronously. The rotation of the drive rod 13 causes the drive component 6 to move closer to the locking end 501. As the drive shaft 7 moves with the drive component 6 towards the locking end 501, its outer ring wall and the inner wall of the sliding groove 8 below it are pressed and slid together, causing the drive end 502 to flip downwards, thus causing the locking end 501 to flip upwards and unlock. The preset rotation speed and duration ensure that the contact block 15 can drive the latch 5 to unlock upon stopping, regardless of whether it reverses direction; the only difference is the degree to which the locking end 501 flips upwards to unlock. After unlocking, the oven door opens, and the pressure rod 2 partially extends and resets under the restoring force of the spring 3.

[0040] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An electric lock, comprising a housing (1) and a latch (5) disposed on the housing (1), wherein the latch (5) is hinged to the housing (1) at its middle portion and the two ends of the latch (5) are a locking end (501) located outside the housing (1) and a driving end (502) located inside the housing (1), characterized in that: A drive component (6) is movably connected to the drive end (502). The drive component (6) is driven by an electronic control component set on the housing (1) to reciprocate and translate. As it reciprocates and translates, the drive end (502) is driven to flip up to lock the latch (5) or flip down to unlock the latch (5).

2. The motor lock of claim 1, wherein: The drive end (502) is provided with a sliding groove (8) that is inclined upward or downward towards the locking end (501). The drive member (6) is provided with a drive shaft (7) at one end near the drive end (502). The drive shaft (7) moves in the sliding groove (8) and the drive end (502) is rotated as the drive shaft (7) moves.

3. An electric lock according to claim 1, characterized in that: The electronic control components include a reciprocating motor (11) for steering, a control component for controlling the opening and closing of the motor (11), and a drive rod (13) that is vertically protruding on the motor shaft. The end of the drive rod (13) away from the motor shaft is movably connected to the end of the drive member (6) away from the drive end (502).

4. An electric lock according to claim 3, characterized in that: The end of the drive member (6) away from the drive end (502) has a recessed mating groove (14) on the side near the drive rod (13). The end of the drive rod (13) away from the motor shaft is inserted into the mating groove (14) and the drive member (6) moves back and forth as the motor (11) rotates.

5. An electric lock according to claim 4, characterized in that: The drive rod (13) is integrally protruded on the outer ring wall of the drive ring (12), and the drive ring (12) is concentrically sleeved and fixed on the motor shaft.

6. An electric lock according to claim 5, characterized in that: The motor (11) is a claw-pole synchronous motor, and the reciprocating switching of the motor (11) is controlled by the blocking structure.

7. An electric lock according to claim 6, characterized in that: The blocking structure includes a cover (17) covering the outside of the drive ring (12) and a first clearance slot (18) opened on the cover (17) for the drive rod (13) to pass through and reciprocate within a preset angle. When the drive rod (13) rotates to abut against one side of the first clearance slot (18), it reverses direction.

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