Door lock safety clutch mechanism and door lock

Abstract

The application discloses a door lock safety clutch mechanism and a door lock, and relates to the technical field of door locks. The door lock safety clutch mechanism comprises a rotating part connected with a lock cylinder on the door lock, a clutch part comprising a first fixed end and a first movable end, the clutch part being pivoted to a base body of the door lock based on the first fixed end, a blocking part arranged on the first movable end and used for abutting against a lock head on the door lock, and a connecting rod part having one end connected with the rotating part and the other end connected with the clutch part. The first movable end has a first position and a second position. In the first position, the blocking part abuts against the lock head on the door lock to block the lock head from being withdrawn to a release state. In the second position, the blocking part is separated from the lock head to enable the lock head to be freely moved. The rotating part drives the clutch part to rotate from the first position to the second position through the connecting rod part. The door lock using the door lock safety clutch mechanism has a simple structure and does not need complicated and precise mold opening design, thereby effectively saving design cost and assembly cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door lock structure, and particularly relates to a door lock safety clutch mechanism and a door lock. BACKGROUND

[0002] For the hidden door lock structure matched with a handle, in order to ensure safety performance, a safety clutch mechanism is generally configured, the clutch mechanism can be in contact with or separated from a lock head, when in contact with the lock head, the lock head is in an insurance state of being unable to act, that is, the lock head cannot be controlled to exit from a lock slot through the door handle, that is, the door lock is in a locked state, when the clutch mechanism is separated from the lock head, the lock head can be driven to move through rotation of the door handle to realize an opening action. For the clutch mechanism of the existing door lock, power transmission between a lock cylinder and the lock head is generally realized through a precise gear meshing mechanism, which is complex in structure, difficult in design, and high in cost. SUMMARY

[0003] The present application aims to provide a door lock safety clutch mechanism which is simple in structure, low in design and assembly cost.

[0004] In order to achieve the above-mentioned purpose, the present application discloses a door lock safety clutch mechanism, which comprises:

[0005] a rotating member connected with a lock cylinder on a door lock, so that the rotating member can rotate following rotation of the lock cylinder;

[0006] a clutch member comprising a first fixed end and a first movable end, the clutch member being pivoted to a base body of the door lock based on the first fixed end; a blocking portion is arranged on the first movable end, and the blocking portion is used for abutting against a lock head on the door lock;

[0007] a connecting rod member, one end of which is connected with the rotating member, and the other end of which is connected with the clutch member;

[0008] the first movable end has a first position and a second position, at the first position, the blocking portion abuts against the lock head on the door lock to block the lock head from returning to a release state, at the second position, the blocking portion is separated from the lock head, so that the lock head can be freely moved;

[0009] the rotating member drives the clutch member to rotate from the first position to the second position through the connecting rod member.

[0010] Preferably, a homing member connected with the clutch member is further included, the homing member is used for providing the clutch member with a driving force constantly moving towards the first position.

[0011] Preferably, a sliding groove extending from the first fixed end to the first movable end is arranged on the clutch member.

[0012] The homing member comprises a second fixed end and a second movable end, the second fixed end is pivoted to the base body, and the second movable end is provided with a connecting head matched with the sliding groove;

[0013] The connecting head is in sliding connection with the sliding groove, the sliding groove is provided with a first elastic member, one end of the first elastic member is in abutment with the connecting head, and the other end of the first elastic member is in abutment with a first fixed end in the sliding groove.

[0014] Preferably, a first straight line is formed through the first fixed end and the first movable end, a second straight line is formed through the second fixed end and the second movable end, during rotation of the clutching member, an included angle α between the first straight line and the second straight line satisfies 0° < α < 180°, and the moving track of the first movable end and the second movable end is always located on the side of the first fixed end and the second fixed end close to the lock head.

[0015] Preferably, a first lug is arranged on the side wall of the rotating member, a second lug is arranged on the clutching member, and the connecting rod member is hook-connected with the rotating member and the clutching member through the first lug and the second lug respectively.

[0016] Preferably, a driving motor is further included, and the driving motor is in transmission connection with the rotating member.

[0017] Preferably, the rotating member is sleeved on one end of a rotating shaft, the other end of the rotating shaft is used for plug-in connection with the lock cylinder, and a gear engaged with the driving motor is arranged in the middle of the rotating shaft.

[0018] The application further discloses a door lock comprising a base body, a lock head and a door lock safety clutching mechanism as described above arranged on the base body.

[0019] Preferably, a connecting groove is further arranged on the lock head, the connecting groove is used for connection with a door handle, and the door handle is used for driving the lock head to exit from the lock groove when the clutching member is in the second position.

[0020] Preferably, the lock head comprises a main head and a secondary head, the main head is in sliding connection with the base body, and the secondary head is fixedly connected with the main head, so that the main head drives the secondary head to move synchronously.

[0021] Compared with the prior art, the door lock safety clutch mechanism disclosed in the above technical solution of the present invention includes three structural components: a rotating component, a clutch component, and a connecting rod component. The clutch component is connected to the rotating component through the connecting rod component. When the lock cylinder is turned by the key, the rotating component rotates, which drives the clutch component to rotate, so that the clutch component moves from the first position in the safe state to the second position. Then, the lock head can be operated by the door handle to perform a telescopic movement, so that the lock head disengages from the lock groove on the door frame. It can be seen that the above door lock safety clutch mechanism has a simple structure and does not require complex and precise mold design, thereby effectively saving design and assembly costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the door lock in an embodiment of the present invention.

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of the safety clutch mechanism of the central door lock.

[0024] Figure 3 for Figure 2 Floor plan.

[0025] Figure 4 for Figure 2 A 3D structural diagram of the central locking mechanism.

[0026] Figure 5 for Figure 2 3D structural diagram of the clutch component.

[0027] Figure 6 for Figure 2 Three-dimensional structural diagram of the centering component.

[0028] Figure 7 for Figure 2 Connection structure diagram of the clutch and the return mechanism.

[0029] Figure 8 for Figure 2 The bottom structure diagram. Detailed Implementation

[0030] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0031] like Figure 1 and Figure 2 This embodiment discloses a door lock 100, which can be used on doors in various occasions, such as doors in homes or RVs. The door lock 100 includes a base 10, on which a lock cylinder 12 and a door lock safety clutch mechanism are provided. The safety clutch mechanism is used to restrict the free movement of the lock cylinder 12 to prevent unlocking directly through the door handle connected to the lock cylinder 12 without a key.

[0032] like Figures 2 to 5 The door lock safety clutch mechanism includes a rotating part 2, a clutch part 3, and a connecting rod part 4.

[0033] Rotating component 2 is connected to the lock cylinder 11 on the door lock 100 so that rotating component 2 can rotate with the rotation of the lock cylinder 11. When the key is inserted into the lock cylinder 11, the lock cylinder 11 rotates, which in turn drives rotating component 2 to rotate.

[0034] The clutch 3 includes a first fixed end 30 and a first movable end 31. The clutch 3 is pivotally connected to the base 10 of the door lock 100 based on the first fixed end 30. A blocking part 32 is provided on the first movable end 31, which is used to abut against the lock head 12 on the door lock 100. In this embodiment, the clutch 3 is a swinging structure based on a swinging action at one end. In addition, the lock head 12 is provided with a blocking mating part 123 adapted to the blocking part 32. In this embodiment, the blocking part 32 is a protrusion, and the blocking mating part 123 is a groove.

[0035] For the connecting rod 4, one end is connected to the rotating member 2, and the other end is connected to the clutch member 3. The rotating member 2 and the clutch member 3 transmit power through the connecting rod 4. It should also be noted that the connecting rod 4 can be a part of the rotating member 2 itself or a part of the clutch member 3 itself.

[0036] Furthermore, the first movable end 31 has a first position and a second position. In the first position, the blocking part 32 abuts against the lock head 12 on the door lock 100 to prevent the lock head 12 from returning to the unlocked state, thus ensuring that the door lock 100 is in a locked state. In the second position, the blocking part 32 separates from the lock head 12, allowing the lock head 12 to move freely, thus ensuring that the door lock 100 is in a ready-to-open state. At this time, by operating the door handle connected to the lock head 12, the door lock 100 can be disengaged from the lock groove on the door frame to achieve the unlocking operation.

[0037] Furthermore, the lock cylinder 12 is also provided with a connecting groove 122, such as... Figure 8 The connecting groove 122 is used to connect with the door handle. When the clutch 3 is in the second position, the door handle is used to drive the lock head 12 out of the lock groove. That is, when the blocking part 32 on the clutch 3 is separated from the lock head 12, the lock head 12 can be disengaged from the lock groove on the door frame by turning the door handle.

[0038] The rotating component 2 drives the clutch component 3 to rotate from the first position to the second position via the connecting rod component 4.

[0039] On the other hand, in some situations, users want the lock cylinder 12 to automatically be in a locked state when operating without a key; that is, they do not want the first movable end 31 of the clutch 3 to remain in the second position without key operation. To address this, a return member 5 is configured for the clutch 3, which provides a constant driving force for the clutch 3 to move towards the first position. With this return member 5, when the user removes the key, the first movable end 31 of the clutch 3 automatically swings to the first position, locking the lock cylinder 12 and preventing it from being in a free state when the user leaves. Furthermore, when the door is open by removing the lock cylinder 12 from the lock slot on the door frame, the return member 5 can drive the clutch 3 to automatically return to the first position, preventing the door from being locked without a key, and thus preventing the key from being locked inside the room.

[0040] Specifically, the clutch 3 is provided with a groove 33 extending from the first fixed end 30 to the first movable end 31. The return member 5 includes a second fixed end 50 and a second movable end 51. The return member 5 is pivotally connected to the base 10 based on the second fixed end 50, and the second movable end 51 is provided with a connector 52 adapted to the groove 33. In this embodiment, the return member 5 and the clutch 3 are both swing structures, and the return member 5 is disposed opposite to the clutch 3. The connector 52 is slidably connected to the groove 33. A first elastic member 34 is provided in the groove 33. One end of the first elastic member 34 abuts against the connector 52, and the other end of the first elastic member 34 abuts against the first fixed end 30 in the groove 33. In this embodiment, when the first movable end 31 of the clutch 3 is in the first position, the first elastic member 34 can be in a naturally extended state or in a compressed state. Of course, it is best to be in a compressed state, so that the blocking part 32 on the clutch 3 abuts tightly against the lock head 12.

[0041] When the rotating member 2 drives the clutch member 3 to rotate from the first position to the second position via the connecting rod member 4, the first movable end 31 of the clutch member 3 drives the second movable end 51 of the return member 5 to rotate away from the lock head 12, causing the connector 52 to move along the slide groove 33 towards the first fixed end 30, thereby further compressing the first elastic member 34. Then, when the rotational torque on the rotating member 2 disappears, the elastic restoring force of the first elastic member 34 pushes the connector 52 towards the lock head 12, thereby causing the connector 52 to drive the first movable end 31 of the clutch member 3 to move towards the lock head 12, ultimately causing the blocking part 32 on the clutch member 3 to abut against the lock head 12.

[0042] On the other hand, if the connector 52 is on the same straight line as the first fixed end 30 and the second fixed end 50, the elastic restoring force of the first elastic element 34 will not be able to provide torque to the connector 52. At this time, the clutch 3 is at the stuck point. Therefore, the rotational stroke of the clutch 3 is limited so that the first movable end 31 cannot cross the area between the first fixed end 30 and the second fixed end 50, that is: Figure 7 The first straight line L1 is formed by the first fixed end 30 and the first movable end 31, and the second straight line L2 is formed by the second fixed end 50 and the second movable end 51. During the rotation of the clutch 3, the included angle α between the first straight line L2 and the second straight line L2 satisfies the condition P: 0°<α<180°, and the movement trajectory of the first movable end 31 and the second movable end 51 is always located on the side of the first fixed end 30 and the second fixed end 50 that is closer to the lock head 12.

[0043] During the rotation of clutch 3, as long as the included angle α between the first straight line L2 and the second straight line L2 always satisfies condition P, clutch 3 can be prevented from entering the jamming point, thereby effectively ensuring the stability of the working performance of the safety clutch mechanism.

[0044] On the other hand, such as Figure 2 and Figure 5 The rotating component 2 has a first lug 20 on its side wall, and the clutch component 3 has a second lug 35. The connecting rod 4 is hooked and connected to the rotating component 2 and the clutch component 3 through the first lug 20 and the second lug 35, respectively. In this embodiment, the first lug 20 and the second lug 35 make the assembly of the connecting rod 4 with the rotating component 2 and the clutch component 3 more convenient.

[0045] On the other hand, such as Figure 2 and Figure 8 To improve the operability of the door lock 100, the safety clutch mechanism in this embodiment also includes a drive motor 6, which is connected to the rotating component 2 via a transmission connection. With this drive motor 6, the user can operate the drive motor 6 via a password switch or remote control, thereby causing the rotating component 2 to rotate, eliminating the inconvenience of carrying a key.

[0046] Specifically, the rotating part 2 is sleeved on one end of a rotating shaft 7, the other end of the rotating shaft 7 is used to connect with the lock cylinder 11, and a gear 8 that meshes with the drive motor 6 is provided in the middle of the rotating shaft 7.

[0047] On the other hand, such as Figure 2 and Figure 4The lock cylinder 12 includes a main cylinder 120 and a secondary cylinder 121. The main cylinder 120 is slidably connected to the base 10, and the secondary cylinder 121 is fixedly connected to the main cylinder 120, so that the main cylinder 120 drives the secondary cylinder 121 to move synchronously. In this embodiment, two lock cylinders 12 are configured, namely the main cylinder 120 and the secondary cylinder 121, and the secondary cylinder 121 is fixedly connected to the main cylinder 120. In this way, only one lock cylinder 11 needs to be configured for the door lock 100 to simultaneously control the synchronous operation of the two lock cylinders 12, effectively improving the convenience of use.

[0048] When the clutch 3 is separated from the lock cylinder 12, in order to make the lock cylinder 12 automatically extend and be in the locked state when the door handle is released, a second elastic element 13 can also be provided at the rear end of the lock cylinder 12. When the lock cylinder 12 retracts from the lock groove on the door frame, the second elastic element 13 is in a compressed state. In this way, when the operating force on the door handle is lost, the lock cylinder 12 automatically extends under the elastic restoring force of the second elastic element 13 and abuts against the blocking part 32 on the clutch 3 through the blocking engagement part 123.

[0049] In summary, as Figures 1 to 8 This invention discloses a door lock 100, which includes a lock head 12, a lock cylinder 11, and a safety clutch mechanism. The lock head 12 includes a main head 120 and a secondary head 121 connected to the main head 120. The safety clutch mechanism includes a rotating component 2, a clutch component 3, a connecting rod 4, and a return component 5. When unlocking is required, the rotating component 2 is driven to rotate by a key or a drive motor 6, which in turn drives the first movable end 31 of the clutch component 3 to rotate around the first fixed end 30, causing the blocking part 32 on the clutch component 3 to separate from the main head 120. Then, by operating the door handle, the main head 120 and the secondary head 121 can be moved to complete the unlocking action. When the rotational torque on the rotating part 2 disappears, under the elastic restoring force of the first elastic element 34 on the clutch part 3, the connecting head 52 in the slide groove 33 of the clutch part 3 is pushed to rotate towards the main head 120, so that the blocking part 32 on the clutch part 3 abuts against the blocking mating part 123 on the main head 120, thereby preventing the main head 120 and the auxiliary head 121 from exiting the lock groove on the door frame. The above-mentioned door lock safety clutch mechanism has a simple structure and does not require complex and precise mold design, thus effectively saving design and assembly costs.

[0050] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A door lock safety clutch mechanism, characterized in that, include: A rotating component connected to the lock cylinder on the door lock, so that the rotating component can rotate with the rotation of the lock cylinder; The clutch includes a first fixed end and a first movable end, the clutch being pivotally connected to the base of the door lock based on the first fixed end; a blocking part is provided on the first movable end, the blocking part being used to abut against the lock head on the door lock; A connecting rod, one end of which is connected to the rotating component, and the other end of which is connected to the clutch component; The first movable end has a first position and a second position. In the first position, the blocking part abuts against the lock head on the door lock to prevent the lock head from returning to the unlocked state. In the second position, the blocking part is separated from the lock head, so that the lock head can move freely; The rotating component drives the clutch component to rotate from the first position to the second position via the connecting rod; it also includes a return component connected to the clutch component, the return component being used to provide the clutch component with a constant driving force to move towards the first position; the clutch component is provided with a sliding groove extending from the first fixed end to the first movable end; the return component includes a second fixed end and a second movable end, the return component is pivotally connected to the base based on the second fixed end, the second movable end is provided with a connector adapted to the sliding groove, the connector being slidably connected to the sliding groove.

2. The door lock safety clutch mechanism according to claim 1, characterized in that, A first elastic element is provided in the slide groove. One end of the first elastic element abuts against the connector, and the other end of the first elastic element abuts against the first fixed end in the slide groove.

3. The door lock safety clutch mechanism according to claim 2, characterized in that, A first straight line is formed by the first fixed end and the first movable end, and a second straight line is formed by the second fixed end and the second movable end. During the rotation of the clutch, the included angle α between the first straight line and the second straight line satisfies: 0° < α < 180°, and the movement trajectory of the first movable end and the second movable end is always located on the side of the first fixed end and the second fixed end closer to the lock head.

4. The door lock safety clutch mechanism according to claim 1, characterized in that, The rotating component has a first lug on its side wall, and the clutch component has a second lug. The connecting rod is hooked and connected to the rotating component and the clutch component through the first lug and the second lug, respectively.

5. The door lock safety clutch mechanism according to claim 1, characterized in that, It also includes a drive motor, which is connected to the rotating component in a transmission manner.

6. The door lock safety clutch mechanism according to claim 5, characterized in that, The rotating component is sleeved on one end of a rotating shaft, the other end of which is used to connect with the lock cylinder, and a gear that meshes with the drive motor is provided in the middle of the rotating shaft.

7. A door lock, characterized in that, It includes a base on which a lock head and a door lock safety clutch mechanism as described in any one of claims 1 to 6 are provided.

8. The door lock according to claim 7, characterized in that, The lock head is also provided with a connecting groove for connecting with a door handle. When the clutch is in the second position, the door handle is used to drive the lock head to exit from the lock groove.

9. The door lock according to claim 7, characterized in that, The lock head includes a main head and a secondary head. The main head is slidably connected to the base, and the secondary head is fixedly connected to the main head, so that the main head drives the secondary head to move synchronously.

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