Double-tongue narrow lock with first-gear lock tongue
Through the combination of the first-speed lock tongue design and the magnetic tongue return spring, the problems of long extension distance, high noise and easy damage of traditional narrow body locks are solved, achieving silent door closing and safety improvement.
Patent Information
- Application Number
- CN202422278893.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The lock tongue design of traditional narrow body locks has problems such as long extension distance, requiring multiple rotation of the key, high noise, easy damage and easy collision with children.
The first-speed lock tongue design is adopted, combined with the magnetic tongue and square tongue structure, and the magnetic tongue reset spring is used to store the lock tongue in the lock housing in a non-use state, so as to achieve silent closing of the door through magnetic attraction, and avoid direct contact between the lock tongue and the door frame when opening and closing the door.
The door is closed silently to avoid friction noise of the lock tongue and injuries to children. At the same time, the key operation process is simplified and the durability and safety of the lock tongue is improved.
Smart Images
Figure CN223269781U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lock body structures, in particular to a double-tongue narrow-body lock with a single-stage lock tongue. Background Art
[0002] Currently, the narrow-body locks for general profile doors basically have a two-stage lock tongue that extends 20mm. The key needs to be turned twice before the lock tongue can be fully extended to lock, which wastes travel time. Sometimes people may forget whether the key has been turned once or twice. In addition, when the traditional lock body is in the closed state, the inclined tongue is always on the outside, which can easily be damaged. The protruding inclined tongue can be easily hit by children of short height and cause injuries. In addition, when the door is closed, the inclined tongue hits the door frame and the matching hole seat, or the inclined tongue rubs against the door frame and the matching hole seat, which will generate loud noise. Therefore, improvement is urgently needed. Therefore, we propose a narrow-body lock with a double tongue and a single-stage lock tongue. Utility Model Content
[0003] The purpose of the utility model is to provide a double-tongue narrow-body lock with a single-stage lock tongue, which solves the problems raised in the background technology.
[0004] To achieve the above-mentioned object, the utility model provides the following technical solutions: a double-tongue narrow-body lock with a single-stage lock bolt, comprising a lock housing, a lock cylinder and a dial wheel rotatably arranged inside the lock housing, the outer portion of the dial wheel being coaxially connected to the door handle via an axle pin, an outer ring of the dial wheel being integrally formed with a beveled tongue pick, a lock panel being fixedly arranged at one end of the lock housing, a magnetic tongue and a square tongue being slidably arranged through the lock panel from top to bottom in sequence, one end of the magnetic tongue being connected to a magnetic tongue return spring, one end of the magnetic tongue return spring being hung with the interior of the lock housing, a U-shaped frame being fixedly arranged at one end of the magnetic tongue located inside the lock housing, and the top end of the beveled tongue pick being embedded in the interior of the U-shaped frame;
[0005] A convex rod is fixedly provided in the middle of the square tongue, a crescent transmission block is rotatably provided on the surface of the convex rod, and a lock core shift block for cooperating with the crescent transmission block is integrally formed on the outer ring of the lock core;
[0006] A transmission plate is vertically slidably provided inside the lock housing. The transmission plate comprises a transmission bottom end head and a transmission top end head. The transmission bottom end head is located on the rotation circumference of the lock core shift block.
[0007] As a preferred implementation scheme of the technical solution of the present application, a spring limit plate is slidingly provided on the inner surface of the lock shell, a locking block spring is fixedly provided at the bottom of the spring limit plate, a locking block is fixedly provided at the bottom of the locking block spring, and a through hole is opened in the middle of the locking block for inlaying with the convex rod.
[0008] As a preferred embodiment of the technical solution of the present application, a slider for guiding the vertical sliding of the transmission plate is fixedly provided inside the lock housing and close to the top end of the transmission, and a sliding groove for mating with the slider is provided near the top end of the transmission plate.
[0009] As a preferred embodiment of the technical solution of the present application, the oblique tongue pick includes a ring body, a hook tongue pick fixed on the top of the ring body, and a boss fixed on the bottom of the ring body, and the boss is in contact with the top end of the transmission head.
[0010] As a preferred implementation of the technical solution of the present application, the outer ring of the thumbwheel is provided with a thumbwheel spring for rebounding and resetting the thumbwheel.
[0011] As a preferred implementation of the technical solution of the present application, a through groove is provided inside the lock housing near the position of the magnetic tongue return spring, and a dust cover is embedded in the through groove.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0013] The technical solution of the present application uses a magnetic tongue reset spring to ensure that the magnetic tongue always has a rebound tendency to be housed inside the lock shell. Therefore, when the magnetic tongue is not engaged with the matching hole of the door frame, the magnetic tongue is always housed inside the lock shell. When closing the door, there is no sound of the magnetic tongue rubbing against the door frame. When closing the door, the magnetic tongue and the magnets in the matching hole of the door frame are attracted to each other by opposite poles, so that the magnetic tongue and the matching hole of the door frame are embedded and matched to complete the door closing action. The door opening action separates the magnetic tongue from the magnets in the matching hole of the door frame, and the magnetic tongue automatically retracts into the lock shell, so that there is no protruding part on the side of the door leaf due to the lock body. It not only has the function of reducing noise but also prevents children from being injured by hitting the protruding oblique tongue. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:
[0015] Figure 1 This is a schematic diagram of the internal structure of a double-tongue narrow-body lock with a single-stage lock tongue;
[0016] Figure 2 A side view of a double-tongue narrow-body lock with a single-stage lock tongue;
[0017] Figure 3 This is a schematic diagram of the assembly of the lock cylinder, square tongue, and locking block;
[0018] Figure 4 This is the assembly diagram of the square tongue and crescent transmission block.
[0019] In the figure: 1. Lock body panel; 2. Lock body; 4. Square tongue; 5. Magnetic tongue; 5-1. U-shaped frame; 6. Dust cover; 7. Magnetic tongue return spring; 8. Oblique tongue pick; 8-1. Hook tongue pick; 8-2. Boss; 9. Pulley spring; 10. Pulley; 11. Spring limiter; 12. Locking block spring; 13. Locking block; 13-1. Locking block bottom rod; 14. Crescent transmission block; 15. Transmission plate; 15-1. Transmission bottom end; 15-2. Transmission top end; 16. Lock cylinder; 16-1. Lock cylinder pick. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0021] Example 1, as Figure 1-4 As shown, the utility model provides a technical solution: a double-tongue narrow-body lock with a single-stage lock bolt, comprising a lock housing 2, a lock cylinder 16 rotatably arranged inside the lock housing 2, and a thumbwheel 10, the outer portion of the thumbwheel 10 being coaxially connected to the door handle via an axle pin, an outer ring of the thumbwheel 10 being integrally formed with a tilted tongue pick 8, a lock body panel 1 being fixedly arranged at one end of the lock housing 2, a magnetic tongue 5 and a square tongue 4 being slidably arranged through the lock body panel 1 from top to bottom, one end of the magnetic tongue 5 being connected to a magnetic tongue return spring 7, one end of the magnetic tongue return spring 7 being hung with the interior of the lock housing 2, a U-shaped frame 5-1 being fixedly arranged at one end of the magnetic tongue 5 located inside the lock housing 2, and the top end of the tilted tongue pick 8 being embedded in the interior of the U-shaped frame 5-1;
[0022] A convex rod is fixedly provided in the middle of the square tongue 4, and a crescent transmission block 14 is rotatably provided on the surface of the convex rod. The outer ring of the lock core 16 is integrally formed with a lock core shift block 16-1 for cooperating with the crescent transmission block 14;
[0023] A transmission plate 15 is vertically slidably provided inside the lock housing 2. The transmission plate 15 includes a transmission bottom end 15-1 and a transmission top end 15-2. The transmission bottom end 15-1 is located on the rotation circumference of the lock core shift block 16-1.
[0024] When the door is closed, the magnetic tongue 5 and the magnets in the lock hole A of the door frame matching seat are attracted to each other, so that the magnetic tongue 5 and the door frame matching seat are inlaid and matched to complete the door closing action;
[0025] When the door needs to be opened, the clockwise rotation of the dial wheel 10 drives the oblique tongue pick 8 to rotate clockwise, and the hook tongue pick 8-1 contacts and pushes the U-shaped frame 5-1 to the right, so that the magnetic tongue 5 is separated from the magnet in the lock hole A of the door frame matching seat, and the pulling force of the magnetic tongue return spring 7 is used to retract the magnetic tongue 5 into the lock housing 2;
[0026] When the door needs to be locked in the closed state, by rotating the lock cylinder 16 counterclockwise, the lock cylinder shift block 16-1 of the lock cylinder 16 contacts the locking block bottom rod 13-1 of the locking block 13, so that the locking block 13 moves up as a whole and the locking block spring 12 is in a compressed state. Then the lock cylinder shift block 16-1 is stuck in the crescent groove of the crescent transmission block 14. In the process of rotating the lock cylinder 16 counterclockwise, the crescent transmission block 14 drives the square tongue 4 to extend out of the lock housing 2 and embed into the lock hole B of the door frame matching seat, completing the door locking action;
[0027] To unlock, the lock cylinder 16 needs to be rotated clockwise, and then the lock cylinder shift block 16-1 is stuck in the crescent groove of the crescent transmission block 14. During the clockwise rotation of the lock cylinder shift block 16-1, the crescent transmission block 14 drives the square tongue 4 to move right and be stored in the lock shell 2. The square tongue 4 is separated from the lock hole B of the door frame matching seat to achieve unlocking. Then continue to rotate the lock cylinder 16 clockwise, so that the lock cylinder shift block 16-1 contacts the bottom end head 15-1 of the transmission and pushes the transmission plate 15 to move up as a whole, so that the top end head 15-2 of the transmission contacts the boss 8-2 of the oblique tongue shift piece 8 for transmission, and finally the oblique tongue shift piece 8 rotates clockwise, and the hook tongue shift piece 8-1 contacts and pushes the U-shaped frame 5-1 to move right, so that the magnetic tongue 5 is separated from the magnet in the lock hole A of the door frame matching seat, completing the unlocking-door opening action.
[0028] In the preferred technical solution, a spring limit piece 11 is slidingly provided on the inner surface of the lock shell 2, a locking block spring 12 is fixedly provided at the bottom of the spring limit piece 11, a locking block 13 is fixedly provided at the bottom of the locking block spring 12, and a through hole is provided in the middle of the locking block 13 for inlaying with the convex rod. When the locking block 13 moves laterally following the square tongue 4, the spring limit piece 11 also slides on the groove body on the inner surface of the lock shell 2, ensuring that the spring limit piece 11, the locking block spring 12 and the locking block 13 move laterally synchronously.
[0029] In the preferred technical solution, a slider for guiding the vertical sliding of the transmission plate 15 is fixedly provided inside the lock housing 2 and close to the transmission top head 15-2. A sliding groove for mating with the slider is provided in the transmission plate 15 close to the transmission top head 15-2. The slider and sliding groove structure provide support and limiting conditions for the vertical movement of the transmission plate 15.
[0030] In the preferred technical solution, the oblique tongue pick 8 includes a ring body, a hook tongue pick 8-1 fixed on the top of the ring body, and a boss 8-2 fixed on the bottom of the ring body. The boss 8-2 is in contact with the top of the transmission top head 15-2. The hook tongue pick 8-1 is used to cooperate with the U-shaped frame 5-1 to drive the magnetic tongue 5 to move right. The boss 8-2 cooperates with the transmission top head 15-2 to realize the clockwise rotation of the hook tongue pick 8-1.
[0031] In the preferred technical solution, the outer ring of the thumbwheel 10 is provided with a thumbwheel spring 9 for rebounding and resetting the thumbwheel 10. When the thumbwheel 10 is rotated clockwise, the thumbwheel spring 9 stores energy. When the thumbwheel 10 is released, the thumbwheel spring 9 causes the thumbwheel 10 to rotate counterclockwise and reset.
[0032] In the preferred technical solution, a through groove is opened inside the lock shell 2 near the position of the magnetic tongue reset spring 7, and a dust cover 6 is embedded in the through groove. The dust cover 6 is used to cover the opening of the lock shell 2 to prevent foreign matter and dust from entering the interior of the lock shell 2.
[0033] In summary, the traditional two-speed lock tongue structure is simplified into a one-speed lock tongue, which avoids the problem of forgetting whether the key is turned one week or two weeks, and the magnetic tongue return spring 7 makes the magnetic tongue 5 always have a rebound tendency to be stored inside the lock shell 2. When the lock body is not in contact with the door frame matching seat, the magnetic tongue return spring 7 pulls the magnetic tongue 5 to be stored inside the lock shell 2. During the door closing process, the magnetic tongue 5 is always stored inside the lock shell 2. Therefore, there will be no sound of the magnetic tongue 5 rubbing against the door frame when closing the door, and there is no protruding part on the side of the door leaf due to the lock body. It not only has a noise reduction function but also avoids the problem of children being injured by hitting the protruding oblique tongue. When closing the door, the magnetic tongue 5 and the magnets in the lock hole A of the door frame matching seat are attracted by opposite poles, so that the magnetic tongue 5 and the door frame matching seat are embedded and matched to complete the door closing action. The whole process will not produce the sound of the magnetic tongue 5 rubbing against the door frame, achieving the noise reduction function, and when the door body is open, the magnetic tongue 5 is always stored inside the lock shell 2, which can protect the magnetic tongue 5 and the personal safety of children at the same time.
Claims
1. A double-tongue narrow-body lock with a single-stage lock tongue, characterized by: The invention comprises a lock housing (2), a lock core (16) and a thumbwheel (10) rotatably arranged inside the lock housing (2); the outside of the thumbwheel (10) is coaxially connected to the door handle via an axle pin; the outer ring of the thumbwheel (10) is integrally formed with a slanted tongue pick (8); a lock panel (1) is fixedly arranged at one end of the lock housing (2); a magnetic tongue (5) and a square tongue (4) are slidably arranged through the lock panel (1) from top to bottom in sequence; one end of the magnetic tongue (5) is connected to a magnetic tongue reset spring (7); one end of the magnetic tongue reset spring (7) is hooked to the inside of the lock housing (2); one end of the magnetic tongue (5) located inside the lock housing (2) is fixedly provided with a U-shaped frame (5-1); the top end of the slanted tongue pick (8) is embedded in the inside of the U-shaped frame (5-1); A convex rod is fixedly provided at the middle of the square tongue (4), a crescent transmission block (14) is rotatably provided on the surface of the convex rod, and a lock core shifting block (16-1) for cooperating with the crescent transmission block (14) is integrally formed on the outer ring of the lock core (16); A transmission plate (15) is vertically slidably provided inside the lock housing (2), the transmission plate (15) comprising a transmission bottom end (15-1) and a transmission top end (15-2), the transmission bottom end (15-1) being located on the rotational circumference of the lock core shift block (16-1).
2. A double-tongue narrow-body lock with a single-stage lock tongue according to claim 1, characterized in that: A spring limiting piece (11) is slidably provided on the inner surface of the lock housing (2), a locking block spring (12) is fixedly provided at the bottom of the spring limiting piece (11), a locking block (13) is fixedly provided at the bottom of the locking block spring (12), and a through hole is provided in the middle of the locking block (13) for engaging with the convex rod.
3. A double-tongue narrow-body lock with a single-stage lock tongue according to claim 1, characterized in that: A slider for guiding the vertical sliding of the transmission plate (15) is fixedly provided inside the lock housing (2) and close to the transmission top end head (15-2); a sliding groove for engaging with the slider is provided on the transmission plate (15) close to the transmission top end head (15-2).
4. A double-tongue narrow-body lock with a single-stage lock tongue according to claim 3, characterized in that: The oblique tongue pick (8) comprises a ring body, a hook tongue pick (8-1) fixed above the ring body, and a boss (8-2) fixed below the ring body, wherein the boss (8-2) is in close contact with the top end of the transmission top end head (15-2).
5. The double-tongue narrow-body lock with a single-stage lock tongue according to claim 1, characterized in that: The outer ring of the thumbwheel (10) is provided with a thumbwheel spring (9) for rebounding and resetting the thumbwheel (10).
6. A double-tongue narrow-body lock with a single-stage lock tongue according to claim 1, characterized in that: A through slot is provided inside the lock housing (2) at a position close to the magnetic tongue reset spring (7), and a dust cover (6) is embedded in the through slot.