Electronic unlocking failure prevention structure for intelligent door lock of rolling gate

Abstract

The utility model discloses an electronic unlocking failure prevention structure for an intelligent door lock of a rolling gate, which comprises a rear lock body, an unlocking gear controlled by a locking piece is arranged in the rear lock body, the unlocking gear is in driving connection with a telescopic piece, a tooth piece used for pushing the locking piece to slide is arranged in the rear lock body, and the tooth piece is driven by an unlocking motor. Reset springs used for pushing the tooth piece to the unlocking motor are installed on the two sides, in the sliding direction, of the tooth piece correspondingly, when the tooth piece is separated from a transmission structure of the unlocking motor, the reset springs push the tooth piece to the unlocking motor to enable the transmission structure to be attached again, and when the unlocking motor rotates again, normal operation of the transmission structure can be guaranteed; therefore, the problem of failure of the electronic unlocking function caused by separation of the transmission structure is avoided.

Description

Technical Field

[0001] This utility model relates to a roller shutter door, and more particularly to a smart lock for a roller shutter door. Background Technology

[0002] Roller shutters are suitable for openings of all sizes, especially those that are tall and not frequently opened or closed. Therefore, they are widely used in commercial building exterior doors, factory gates, residential communities, government agencies, schools, enterprises, and other places.

[0003] The roller shutter lock includes an unlocking knob, a locking mechanism, and a telescopic mechanism. The unlocking knob is connected to the telescopic mechanism via a transmission mechanism. When the unlocking knob rotates, it drives the telescopic mechanism to extend or retract to the sides, causing the pin on the telescopic mechanism to insert into or retract from a hole in the wall, thus achieving the purpose of unlocking or locking. The locking mechanism is used to fix the unlocking knob in place. Only when the locking mechanism slides out of the unlocking knob can the unlocking knob rotate. Similar to a roller shutter smart lock applied for by the same applicant (application number 2025200413597), this type of lock generally has two unlocking methods: one is mechanical unlocking, which involves sliding the locking mechanism using a knob key; the other is electronic unlocking, which involves installing a locking mechanism inside the lock. The motor that drives the locking mechanism to slide has a gear mounted on it. By driving the rack to move linearly, it achieves the effect of driving the locking mechanism to slide. However, in practice, due to reasons such as excessive motor driving time, the gear and rack may completely disengage. For example, after the motor drives for 2 seconds, the gear is just about to engage with the last tooth of the rack. If, due to a problem with the control program (such as driving for 2.2 seconds), or if the rack becomes shorter due to cooling contraction during production, the gear disengages from the last tooth of the rack. When the motor reverses to reset the rack, the teeth on the gear cannot reach the teeth on the rack, thus leaving it in an idle state and unable to reset the rack. The next time electronic unlocking is attempted, the gear and rack are still in a disengaged state, causing the electronic unlocking to fail. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a structure for preventing electronic unlocking failure for a smart door lock for a roller shutter door.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An anti-electronic unlocking failure structure for a smart lock for a roller shutter door includes a rear lock body. An unlocking gear controlled by a locking element is installed in the rear lock body. The unlocking gear is driven by a telescopic element. A tooth condition for pushing the locking element to slide is installed in the rear lock body. The tooth condition is driven by an unlocking motor. Reset springs for pushing the tooth condition toward the unlocking motor are installed on both sides of the tooth condition along the sliding direction.

[0007] The rear lock body is provided with a mounting cavity, the tooth conditioner is slidably mounted in the mounting cavity, and the return spring is mounted between the tooth conditioner and the inner wall of the mounting cavity.

[0008] The mounting cavity is provided with a sliding groove that matches the size of the tooth condition, and the tooth condition is slidably mounted in the sliding groove.

[0009] The dimension of the tooth condition along the sliding direction is smaller than the length of the slide groove. When the unlocking motor drives the tooth condition to slide, the sidewall of the tooth condition extends out of the slide groove and compresses the reset spring.

[0010] When the sidewall of the tooth condition is flush with the end of the slide groove, the gear on the unlocking motor rotating shaft is still engaged with the rack of the tooth condition.

[0011] The toothed surface is provided with a strip-shaped hole along the sliding direction, and the toothed surface is disposed on the upper or lower side of the strip-shaped hole.

[0012] The locking member has a notch above the tooth condition, and a pushing part extends upward from the top of the tooth condition, the pushing part being inserted into the notch.

[0013] The toothed condition has symmetrically outwardly extending insert portions on both sides, and the return spring is fitted onto the insert portions.

[0014] The beneficial effects of this utility model are as follows: This utility model has an unlocking gear controlled by a locking component installed in the rear lock body. The unlocking gear is driven by a telescopic component. A toothed condition for pushing the locking component to slide is installed in the rear lock body. The toothed condition is driven by an unlocking motor. Return springs for pushing the toothed condition towards the unlocking motor are installed on both sides of the toothed condition along the sliding direction. When the toothed condition disengages from the transmission structure of the unlocking motor, the return springs push the toothed condition towards the unlocking motor, causing the transmission structure to re-engage. When the unlocking motor rotates again, it ensures the normal operation of the transmission structure, thereby avoiding the problem of electronic unlocking failure due to the disengagement of the transmission structure. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is an exploded view of the unlocking motor.

[0019] Figure 4This is a structural diagram of the tooth condition;

[0020] Figure 5 This is a structural diagram of the rear lock body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0023] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0024] Reference Figure 1-5 An anti-electronic unlocking failure structure for a smart lock for a roller shutter door includes a rear lock body 2. An unlocking gear 4, controlled by a locking component 3, is installed inside the rear lock body 2. The unlocking gear 4 is driven by a telescopic component 5. A toothed condition 6, used to push the locking component 3 to slide, is installed inside the rear lock body 2. The toothed condition 6 is driven by an unlocking motor 7. Return springs 8 are installed on both sides of the toothed condition 6 along the sliding direction to push it towards the unlocking motor 7. When the toothed condition 6 disengages from the transmission structure of the unlocking motor 7, the return springs 8 push the toothed condition 6 towards the unlocking motor 7, causing the transmission structure to re-engage. When the unlocking motor 7 rotates again, the normal operation of the transmission structure is ensured, thus preventing the electronic unlocking function from failing due to the disengagement of the transmission structure.

[0025] The rear lock body 2 is provided with a mounting cavity 12. The tooth condition 6 is slidably mounted in the mounting cavity 12. The return spring 8 is mounted between the tooth condition 6 and the inner wall of the mounting cavity 12. The mounting cavity 12 is provided with a sliding groove 14 that matches the size of the tooth condition 6. The tooth condition 6 is slidably mounted in the sliding groove 14. The dimension of the tooth condition 6 along the sliding direction is smaller than the length of the sliding groove 14. When the unlocking motor 7 drives the tooth condition 6 to slide, the side wall of the tooth condition 6 extends out from the sliding groove 14 and compresses the return spring 8.

[0026] The initial position of the tooth condition 6 is located in the middle of the slide groove 14. At this time, both sides of the tooth condition 6 are within the slide groove 14. The return spring 8 is separated from the side wall of the tooth condition 6, that is, the elastic force of the return spring 8 will not act on the tooth condition 6, that is, it will not apply a continuous force to the unlocking motor 7 through the tooth condition 6, thus avoiding the problem of the unlocking motor 7 being subjected to long-term force, affecting its service life.

[0027] When electronic unlocking is performed, the unlocking motor 7 rotates forward, thereby driving the gear condition 6 to begin sliding. Simultaneously, the gear condition 6 begins to push the locking member 3 to slide. When the sidewall of the gear condition 6 is flush with the end of the slide groove 14, the gear 10 on the rotating shaft of the unlocking motor 7 and the rack 11 of the gear condition 6 are still in a meshed state. The unlocking motor 7 continues to rotate until electronic unlocking is complete. At this point, two situations exist: one is that the gear 10 and rack 11 are still in a meshed state; the other is that when the unlocking motor 7 reverses, the gear 10 and rack 11 are in a meshed state. In one scenario, the gear 10 is constantly engaged, driving the tooth condition 6 to move in the opposite direction to reset. In another scenario, the gear 10 disengages from the rack 11, and the tooth condition 6 continues to move due to inertia, causing the gear 10 to disengage further from the rack 11. At this time, due to the presence of the reset spring 8, the tooth condition 6 will be pushed in the opposite direction until the last tooth of the gear 10 engages with the last tooth of the rack 11. When the unlocking motor 7 reverses, the gear 10 can still reach the last tooth of the rack 11 when it rotates, thus enabling normal meshing transmission and driving the tooth condition 6 to move in the opposite direction to reset.

[0028] The tooth condition 6 is provided with a strip-shaped hole 9 along the sliding direction. The rack 11 is provided on the upper or lower side of the strip-shaped hole 9. The gear 10 passes through the strip-shaped hole 9 and meshes with the rack 11.

[0029] If the rack is designed to be long enough, the gear and rack on the unlocking motor will always be engaged when the locking element is driven to any position. For this type of product, if the locking element is driven to its limit but does not stop, such as after being driven from the starting point to the end point (there is usually a corresponding structure for limiting, such as a long hole on the locking element with a plastic post inserted in the hole, the position of the locking element is limited by the cooperation between the plastic post and the long hole, ensuring the accuracy of the locking element's position), the gear and rack will be stopped abruptly, causing the unlocking motor to be directly jammed, affecting the service life of the unlocking motor. At the same time, since the gear and rack are generally made of plastic, repeated emergency stops may cause certain damage to the gear and rack, or even direct wear.

[0030] Therefore, this application provides sufficient space A for the gear 10 to idle on both sides of the strip hole 9 located on the rack 11. When the gear 10 keeps rotating due to problems such as program issues, the tooth condition 6 slides relative to the gear 10. When it reaches the end of the strip hole 9, there is enough space for the gear 10 to idle, thus avoiding damage to the tooth structure on the gear 10 or rack 11 from the gear 10 and rack 11 being in a meshed state.

[0031] The locking member 3 is provided with a notch 15 above the tooth condition 6. A pushing part 16 extends upward from the top of the tooth condition 6. The pushing part 16 is inserted into the notch 15. When the tooth condition 6 slides, the locking member 3 is pushed to slide through the cooperation of the pushing part 16 and the notch 15, thereby achieving the effect of electronic unlocking and closing.

[0032] In this application, after electronic unlocking is completed, after a period of time (such as 1 minute), a program (the program is a conventional control program in smart door locks) will control the unlocking motor 7 to reverse, thereby driving the locking member 3 to reset and close the door lock again.

[0033] The tooth condition 6 has symmetrically outwardly extending insertion parts 13 on both sides. The return spring 8 is fitted onto the insertion parts 13. The insertion parts 13 serve as guides for the extension and retraction of the return spring 8. Lateral forces can cause the spring to bend, deviate, or tilt.

[0034] This application only makes technical improvements on how to ensure that gear 10 and rack 11 are always in contact and meshing. Other aspects, such as how the key drives the locking part 3 to achieve mechanical termination and how to lock, are not modified.

[0035] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A structure for preventing electronic unlocking failure of a smart lock for a roller shutter door, comprising a rear lock body (2), wherein an unlocking gear (4) controlled by a locking member (3) is installed inside the rear lock body (2), and the unlocking gear (4) is driven by a telescopic member (5), characterized in that... The rear lock body (2) is equipped with a tooth condition (6) for pushing the locking member (3) to slide. The tooth condition (6) is driven by the unlocking motor (7). The tooth condition (6) is equipped with a return spring (8) on both sides along the sliding direction for pushing the tooth condition (6) towards the unlocking motor (7).

2. The anti-electronic unlocking failure structure for intelligent door locks of rolling shutters according to claim 1, characterized in that... The rear lock body (2) is provided with a mounting cavity (12), the tooth condition (6) is slidably mounted in the mounting cavity (12), and the reset spring (8) is mounted between the tooth condition (6) and the inner wall of the mounting cavity (12).

3. The anti-electronic unlocking failure structure for intelligent door locks of rolling shutters according to claim 2, characterized in that... The mounting cavity (12) is provided with a sliding groove (14) that matches the size of the tooth condition (6), and the tooth condition (6) is slidably installed in the sliding groove (14).

4. The anti-electronic unlocking failure structure for intelligent door locks of rolling shutters according to claim 3, characterized in that... The dimension of the tooth condition (6) along the sliding direction is smaller than the length of the slide groove (14). When the unlocking motor (7) drives the tooth condition (6) to slide, the sidewall of the tooth condition (6) extends out from the slide groove (14) and compresses the reset spring (8).

5. The anti-electronic unlocking failure structure for a smart door lock for a roller shutter door according to claim 4, characterized in that, When the sidewall of the tooth condition (6) is flush with the end of the slide (14), the gear (10) on the rotating shaft of the unlocking motor (7) and the rack (11) of the tooth condition (6) are still in mesh.

6. The anti-electronic unlocking failure structure for a smart door lock for a rolling shutter door according to claim 5, characterized in that... The tooth condition (6) is provided with a strip hole (9) along the sliding direction, and the toothed rack (11) is provided on the upper or lower side of the strip hole (9).

7. The anti-electronic unlocking failure structure for a smart door lock for a rolling shutter door according to claim 5, characterized in that... The locking member (3) is provided with a notch (15) above the tooth condition (6), and a pushing part (16) extends upward from the top of the tooth condition (6), and the pushing part (16) is inserted into the notch (15).

8. The anti-electronic unlocking failure structure for a smart door lock for a rolling shutter door according to claim 1, characterized in that... The tooth condition (6) has symmetrically outwardly extending inserts (13) on both sides, and the return spring (8) is fitted onto the inserts (13).

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