A safety knob integrated door lock
Patent Information
- Application Number
- CN202610982371.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-02
- Publication Date
- 2026-08-18
AI Technical Summary
[0003]然而，现有结构中保险旋钮通常独立外露，旋钮状外观件多仅起遮挡作用而不能转动，导致门体内侧外露结构较多，外观整体性较差，使用不够方便
[0010] Compared with the prior art, the beneficial effects of this invention are as follows: By setting up a motor mounting area and a knob transmission mounting area distributed vertically inside the outer casing, the motor is hidden inside the large knob through the knob opening, and the large knob drives the safety knob to rotate through the knob transmission assembly. This allows the large knob to simultaneously shield the motor and drive the safety knob, thus integrating the originally independently exposed safety knob operation function into the large knob, reducing the exposed structure inside the door and making the door lock look simpler. At the same time, the large knob gear, the adapter gear, and the safety knob gear mesh sequentially, so that the large knob and the safety knob rotate in the same direction, which conforms to the user's rotation operation habits. The abutment notch on the rotating ring cooperates with the limiting protrusion on the bottom surface of the knob mounting hole, so that the outer casing can bear the external force generated by the continued rotation after the large knob has rotated to the position, reducing the end impact of the gear transmission part and improving the transmission stability and service life of the knob transmission assembly.
Smart Images
Figure CN122589271A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lock technology, and in particular to a door lock with a safety knob integrated into it. Background Technology
[0002] With the development of smart door locks, rear-mounted motor assemblies are often installed inside the door, and the motor and transmission mechanism drive the lock body to perform unlocking or locking actions. Existing rear-mounted motor assemblies usually require an outer cover or knob-like external component to cover the motor and transmission structure. In addition, a separate safety knob is also required to meet the needs of manual safety operation.
[0003] However, in existing structures, the safety knob is usually exposed independently, and the knob-shaped external parts mostly only serve to cover it and cannot be rotated. This results in a lot of exposed structures on the inside of the door, poor overall appearance, and inconvenience in use.
[0004] Therefore, a door lock with a safety knob integrated is proposed. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a safety knob integrated door lock, including a housing, which is used to install on the inside of a door body. An installation cavity is formed inside the housing. A large knob is rotatably connected to the side of the housing away from the door body. A safety knob is rotatably installed in the installation cavity and is connected to the safety structure of the door lock. A knob transmission assembly is also provided in the installation cavity. The knob transmission assembly is connected to the large knob and the safety knob respectively, so that when the large knob is rotated, it can drive the safety knob to rotate through the knob transmission assembly. A motor is provided in the installation cavity and inserted into the large knob. A motor transmission assembly is also provided in the installation cavity and is connected to the motor. The motor transmission assembly is used to transmit the output power of the motor to the lock body.
[0006] As a preferred embodiment of the present invention, the mounting cavity is provided with a motor mounting area and a knob transmission mounting area. The motor mounting area is located in the upper part of the mounting cavity, and the knob transmission mounting area is located in the lower part of the mounting cavity. The motor and motor transmission assembly are arranged in the motor mounting area, and the safety knob and knob transmission assembly are arranged in the knob transmission mounting area.
[0007] As a preferred embodiment of the present invention, a knob mounting hole is provided on the side of the outer shell away from the door body. A rotating ring is connected to the side of the large knob facing the mounting cavity. The rotating ring is rotatably connected to the knob mounting hole, so that the large knob rotates relative to the outer shell through the rotating ring. The rotating ring includes an upper half edge and a lower half edge in the vertical direction. The thickness of the upper half edge of the rotating ring is greater than the thickness of the lower half edge. An abutting notch is formed at the thickness transition position between the upper half edge and the lower half edge. A limit protrusion is provided on the bottom surface of the knob mounting hole.
[0008] In a preferred embodiment of the present invention, the motor transmission assembly includes an upper motor housing connected to a mounting cavity, a lower motor housing connected to the upper motor housing, and a gear mounting space formed between the upper and lower motor housings. The motor is connected to the upper motor housing, and the motor's drive shaft extends into the gear mounting space. A first gear is connected to the motor's drive shaft. Three gear supports connect the upper and lower motor housings, and a second, third, and fourth gear are rotatably connected to each of the three gear supports. The second, third, and fourth gears are all compound gears. The gear is formed by coaxially connecting a large gear section and a small gear section. The large gear section of the third gear meshes with the first gear. The small gear section of the third gear meshes with the large gear section of the fourth gear on the side near the lower housing of the motor. The small gear section of the fourth gear meshes with the large gear section of the second gear on the side near the upper housing of the motor. A shaft hole is provided on the lower housing of the motor, and a connecting shaft is rotatably connected in the shaft hole. A rectangular transmission hole is provided in the connecting shaft, and a fifth gear is connected to the connecting shaft. The fifth gear has a round hole and is connected to the outer wall of the connecting shaft through the round hole. The fifth gear meshes with the small gear section of the second gear.
[0009] As a preferred embodiment of the present invention, the knob transmission assembly includes a large knob gear connected to a rotating ring via countersunk screws. A support column is connected within the knob transmission mounting area, and a transfer gear is rotatably connected to the support column, meshing with the large knob gear. A safety knob gear is connected to a safety knob, meshing with the transfer gear. A safety knob cover is provided on the knob transmission mounting area, connected to the outer casing, and covering the outside of the large knob gear and the transfer gear. The lower end of the large knob gear passes through the safety knob cover and meshes with the transfer gear.
[0010] Compared with the prior art, the beneficial effects of this invention are as follows: By setting up a motor mounting area and a knob transmission mounting area distributed vertically inside the outer casing, the motor is hidden inside the large knob through the knob opening, and the large knob drives the safety knob to rotate through the knob transmission assembly. This allows the large knob to simultaneously shield the motor and drive the safety knob, thus integrating the originally independently exposed safety knob operation function into the large knob, reducing the exposed structure inside the door and making the door lock look simpler. At the same time, the large knob gear, the adapter gear, and the safety knob gear mesh sequentially, so that the large knob and the safety knob rotate in the same direction, which conforms to the user's rotation operation habits. The abutment notch on the rotating ring cooperates with the limiting protrusion on the bottom surface of the knob mounting hole, so that the outer casing can bear the external force generated by the continued rotation after the large knob has rotated to the position, reducing the end impact of the gear transmission part and improving the transmission stability and service life of the knob transmission assembly. Attached Figure Description
[0011] Figure 1 This is a front view of the present invention. Figure 2 This is a schematic diagram of the separation structure between the outer casing and the motor drive assembly of the present invention; Figure 3 This is a schematic diagram of the rear structure of the present invention; Figure 4 This is a schematic diagram of the detached structure of the motor drive assembly of the present invention; Figure 5 This is a schematic diagram of the detachable structure of the knob transmission assembly of the present invention.
[0012] The components include: 1. Outer shell; 2. Mounting cavity; 3. Motor mounting area; 4. Knob drive mounting area; 5. Motor drive assembly; 501. Upper motor housing; 502. Lower motor housing; 503. First gear; 504. Gear support; 505. Second gear; 506. Third gear; 507. Fourth gear; 508. Connecting shaft; 509. Fifth gear; 6. Safety knob; 7. Knob drive assembly; 701. Large knob gear; 702. Washer; 703. Countersunk screw; 704. Adapter gear; 705. Safety knob gear; 706. Safety knob cover; 8. Large knob; 9. Motor; 10. Knob mounting hole; 11. Rotary ring; 12. Limiting protrusion; 13. Contact notch. Detailed Implementation
[0013] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.
[0014] Example: Figure 1 , Figure 2 and Figure 3As shown, a door lock with a safety knob integration includes a housing 1, which is installed on the inner side of a door. An opening is formed on the side of the housing 1 facing the door. After the housing 1 is installed on the inner side of the door, a mounting cavity 2 is formed between the housing 1 and the door. The mounting cavity 2 contains a motor mounting area 3 and a knob drive mounting area 4. The motor mounting area 3 is located at the upper part of the mounting cavity 2, and the knob drive mounting area 4 is located at the lower part of the mounting cavity 2. A knob mounting hole 10 is provided on the side of the housing 1 facing away from the door. A large knob 8 passes through the knob mounting hole 10 and is rotatably mounted on the housing 1, allowing the large knob 8 to rotate relative to the housing 1. A knob opening is formed on the side of the large knob 8 facing the mounting cavity 2. A motor 9 is provided in the motor mounting area 3, and the motor 9 extends into the large knob 8 through the knob opening, thus concealing the motor 9 within the large knob 8. Inside, motor drive assembly 5 is installed in motor installation area 3. Motor drive assembly 5 is connected to motor 9. Motor drive assembly 5 is used to receive the power output by motor 9 and transmit the power to lock body, so that motor 9 can drive lock body to perform automatic unlocking or automatic locking actions through motor drive assembly 5. Knob drive installation area 4 is rotatably installed with safety knob 6. Safety knob 6 is used to connect to the door lock's safety structure, so that when safety knob 6 is rotated, it can drive the door lock's safety structure to operate. Knob drive installation area 4 is installed with knob drive assembly 7. Knob drive assembly 7 is connected to large knob 8 and safety knob 6 respectively. When the user rotates large knob 8, the rotation of large knob 8 can be transmitted to safety knob 6 through knob drive assembly 7, thereby driving safety knob 6 to rotate.
[0015] like Figure 3 and Figure 5 As shown, a rotating ring 11 is connected to the side of the large knob 8 facing the mounting cavity 2. The rotating ring 11 is rotatably connected to the knob mounting hole 10, allowing the large knob 8 to rotate relative to the outer shell 1 via the rotating ring 11. The rotating ring 11 includes an upper half edge and a lower half edge in the vertical direction. The thickness of the upper half edge of the rotating ring 11 is greater than that of the lower half edge, so that the thickness transition position between the upper half edge and the lower half edge forms an abutting notch 13. A limiting protrusion 12 is provided on the bottom surface of the knob mounting hole 10. The limiting protrusion 12 protrudes towards the rotating ring 11 and extends into the rotation range of the abutting notch 13. After the large knob 8 rotates to a preset angle, the notch wall of the abutting notch 13 can abut against the limiting protrusion 12, thereby restricting the rotating ring 11 and the large knob 8 from continuing to rotate.
[0016] like Figure 4As shown, the motor transmission assembly 5 includes an upper motor housing 501 connected to the motor mounting area 3. A lower motor housing 502 is connected to the upper motor housing 501, forming a gear mounting space between them. A motor 9 is connected to the upper motor housing 501, and its drive shaft extends into the gear mounting space. A first gear 503 is connected to the drive shaft of the motor 9. Three gear supports 504 are connected between the upper and lower motor housings 501 and 502. A second gear 505, a third gear 506, and a fourth gear 507 are rotatably connected to the three gear supports 504. The second gear 505, third gear 506, and fourth gear 507 are all compound gears, formed by coaxially connecting a large gear section and a small gear section. This allows the motor transmission assembly 5 to reduce the output power of the motor 9 and increase its torque through multi-stage gear meshing. The large gear section of the third gear 506 meshes with the first gear 503, and the small gear section of the third gear 506 is located near the lower motor housing 502. One side of the first gear 503 meshes with the large gear portion of the fourth gear 507. The small gear portion of the fourth gear 507 meshes with the large gear portion of the second gear 505 on the side near the upper housing 501 of the motor, so that the rotational action of the first gear 503 can be transmitted to the second gear 505 sequentially through the third gear 506 and the fourth gear 507. A shaft hole is provided on the lower housing 502 of the motor, and a connecting shaft 508 is rotatably connected in the shaft hole. A rectangular transmission hole is provided in the connecting shaft 508, which is used to connect with the square rod, square pin or door lock. Other non-circular transmission components are inserted and engaged, so that when the connecting shaft 508 rotates, it can drive the transmission structure inside the door lock to move. A fifth gear 509 is connected to the connecting shaft 508. The fifth gear 509 has a circular hole and is connected to the outer wall of the connecting shaft 508. The fifth gear 509 meshes with the pinion part of the second gear 505, so that the rotation of the second gear 505 can be transmitted to the connecting shaft 508 through the fifth gear 509, and the connecting shaft 508 drives the door lock to perform automatic unlocking or automatic locking actions.
[0017] like Figure 5As shown, the knob transmission assembly 7 includes a large knob gear 701, which is connected to the rotating ring 11 by a countersunk screw 703. A shim 702 is provided between the large knob gear 701 and the rotating ring 11. The shim 702 is used to adjust the assembly clearance between the large knob gear 701 and the rotating ring 11 and to reduce assembly wear. A support column is connected in the knob transmission mounting area 4. A transition gear 704 is rotatably connected to the support column. The transition gear 704 meshes with the large knob gear 701, causing the large knob gear 701 to rotate. When the large knob 8 rotates, it drives the adapter gear 704 to rotate around the support. A safety knob gear 705 is connected to the safety knob 6. The safety knob gear 705 meshes with the adapter gear 704, so that when the adapter gear 704 rotates, it drives the safety knob 6 to rotate via the safety knob gear 705. The rotation of the large knob 8 is transmitted sequentially through the large knob gear 701, the adapter gear 704, and the safety knob gear 705 to the safety knob 6, so that rotating the large knob 8 drives the safety knob 6 to operate. The adapter gear 701... 4 is located between the large knob gear 701 and the safety knob gear 705, ensuring that the large knob gear 701 and the safety knob gear 705 rotate in the same direction after two meshing transmissions, thus making the rotation direction of the large knob 8 consistent with the rotation direction of the safety knob 6. The knob transmission mounting area 4 is protruding inward relative to the adjacent area in the mounting cavity 2, creating a step difference between the knob transmission mounting area 4 and the motor mounting area 3. A safety knob cover 706 is provided on the knob transmission mounting area 4. 6 is connected to the outer casing 1 by countersunk screws 703. The safety knob cover 706 covers the outside of the large knob gear 701 and the adapter gear 704 to form a shield to protect the large knob gear 701 and the adapter gear 704. The lower part of the large knob gear 701 passes through the safety knob cover 706 and meshes with the adapter gear 704. The side surface of the safety knob cover 706 facing the door is flush with the side surface of the outer casing 1 facing the door, thereby ensuring the stability of the installation fit between the outer casing 1 and the door.
[0018] Working principle: When the door lock performs automatic unlocking or automatic locking, the motor 9 starts and drives the first gear 503 to rotate. The first gear 503 transmits power to the connecting shaft 508 in sequence through the third gear 506, the fourth gear 507, the second gear 505, and the fifth gear 509. The connecting shaft 508 drives the internal transmission structure of the door lock to operate, thereby realizing the automatic unlocking or automatic locking of the door lock. When the user needs to manually operate the safety mechanism, the user turns the large knob 8 on the outside of the outer shell 1. The large knob 8 drives the rotating ring 11 to rotate synchronously. The rotating ring 11 drives the large knob gear 701 to rotate. The large knob gear 701 drives the adapter gear 704 to rotate. The adapter gear 704 drives the safety knob gear 705 to rotate. The safety knob gear 705 further drives the safety knob 6 to rotate, so that the safety knob 6 drives the safety mechanism of the door lock to operate.
[0019] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A door lock with a safety knob integrated into the door, characterized in that, Includes a housing (1), which is used to install inside the door body. A mounting cavity (2) is formed inside the housing (1). A large knob (8) is rotatably connected to the side of the housing (1) away from the door body. A safety knob (6) is rotatably installed in the mounting cavity (2), and the safety knob (6) is connected to the safety structure of the door lock. A knob transmission assembly (7) is also provided in the mounting cavity (2). The knob transmission assembly (7) is connected to the large knob (8) and the safety knob (6) respectively, so that when the large knob (8) rotates, it can drive the safety knob (6) to rotate through the knob transmission assembly (7). A motor (9) is provided in the mounting cavity (2) and inserted into the large knob (8). A motor transmission assembly (5) is also provided in the mounting cavity (2). The motor transmission assembly (5) is connected to the motor (9) and is used to transmit the output power of the motor (9) to the lock body.
2. The safety knob integrated door lock according to claim 1, characterized in that, The mounting cavity (2) is provided with a motor mounting area (3) and a knob transmission mounting area (4). The motor mounting area (3) is located at the upper part of the mounting cavity (2), and the knob transmission mounting area (4) is located at the lower part of the mounting cavity (2). The motor (9) and the motor transmission assembly (5) are arranged in the motor mounting area (3), and the safety knob (6) and the knob transmission assembly (7) are arranged in the knob transmission mounting area (4).
3. A door lock with a safety knob fusion mechanism according to claim 2, characterized in that, The outer shell (1) has a knob mounting hole (10) on the side away from the door body. A rotating ring (11) is connected to the side of the large knob (8) facing the mounting cavity (2). The rotating ring (11) is rotatably connected to the knob mounting hole (10), so that the large knob (8) rotates relative to the outer shell (1) through the rotating ring (11). The rotating ring (11) includes an upper half edge and a lower half edge in the vertical direction. The thickness of the upper half edge of the rotating ring (11) is greater than the thickness of the lower half edge. The thickness transition position of the upper half edge and the lower half edge forms an abutting notch (13). The bottom surface of the knob mounting hole (10) is provided with a limit protrusion (12).
4. A door lock with a safety knob fusion mechanism according to claim 1, characterized in that, The motor transmission assembly (5) includes an upper motor housing (501), which is connected to the mounting cavity (2). A lower motor housing (502) is connected to the upper motor housing (501), and a gear mounting space is formed between the upper motor housing (501) and the lower motor housing (502). The motor (9) is connected to the upper motor housing (501), and the transmission shaft of the motor (9) extends into the gear mounting space. A first gear (503) is connected to the transmission shaft of the motor (9). Three gear supports (504) are connected between the upper motor housing (501) and the lower motor housing (502). A second gear (505), a third gear (506), and a fourth gear (507) are rotatably connected to the three gear supports (504), respectively. The second gear (505), the third gear (506), and the fourth gear (507) are all compound gears. The compound gear is formed by coaxial connection of a large gear part and a small gear part. The large gear part of the third gear (506) meshes with the first gear (503). The small gear part of the third gear (506) meshes with the large gear part of the fourth gear (507) on the side near the lower housing (502) of the motor. The small gear part of the fourth gear (507) meshes with the large gear part of the second gear (505) on the side near the upper housing (501) of the motor. A shaft hole is provided on the lower housing (502) of the motor. A connecting shaft (508) is rotatably connected in the shaft hole. A rectangular transmission hole is provided in the connecting shaft (508). A fifth gear (509) is connected on the connecting shaft (508). A round hole is provided in the fifth gear (509) and it is connected to the outer wall of the connecting shaft (508) through the round hole. The fifth gear (509) meshes with the small gear part of the second gear (505).
5. A safety knob integrated door lock according to claim 3, characterized in that, The knob transmission assembly (7) includes a large knob gear (701), which is connected to the rotating ring (11) by a countersunk screw (703). A support is connected in the knob transmission mounting area (4), and a transfer gear (704) is rotatably connected to the support. The transfer gear (704) meshes with the large knob gear (701). A safety knob gear (705) is connected to the safety knob (6), and the safety knob gear (705) meshes with the transfer gear (704).
6. A safety knob integrated door lock according to claim 5, characterized in that, A safety knob cover (706) is provided on the knob transmission installation area (4). The safety knob cover (706) is connected to the outer shell (1). The safety knob cover (706) covers the outside of the large knob gear (701) and the adapter gear (704). The lower part of the large knob gear (701) passes through the safety knob cover (706) and meshes with the adapter gear (704).