Flip type small side-hung lock with gears

Abstract

The utility model discloses a flip type small side-hung lock with gears, which belongs to the field of screen window locks, is used for locking a screen window, solves the technical problem that a handle is easy to fall off, and comprises a handle, a lock cylinder, a spring bolt and a lock body, the lock cylinder is mounted on the lock body and can drive the spring bolt to extend or retract relative to the lock body, the handle is rotatably connected to the lock body, and the lock body is mounted on the lock cylinder. And the handle can be limited on the lock body by at least two angles.

Description

Technical Field

[0001] The utility model belongs to the field of screen window locks, and particularly relates to a flip-type small flat lock with gears. Background Art

[0002] The existing small flat locks used on screen windows are assembled by a handle and a lock body. For example, the handle is designed as a bouncing structure, a pressing structure, etc. relative to the lock body. Especially for this pressing structure, if the pressing force is too large, the handle is likely to fall off the lock body, and usually, two hands are required to cooperate in the operation, one hand presses, and the other hand holds the handle to prevent it from falling off, which is inconvenient to operate and also affects the use effect. Content of the Utility Model

[0003] The purpose of the utility model is to provide a flip-type small flat lock with gears, which avoids the handle falling off the lock body during the operation process.

[0004] The flip-type small flat lock with gears includes a handle, a lock core, a lock tongue and a lock body. The lock core is installed in the lock body. The lock core can drive the lock tongue to extend or retract relative to the lock body. The handle is rotatably connected to the lock body, and the handle can be limited at least at two angles relative to the lock body.

[0005] The lock body is internally provided with mutually pressed balls and springs. At the connection between the handle and the lock body, there are a step and a groove for clamping the balls. The groove is arranged on the side of the step, and the top of the step abuts against the balls.

[0006] The handle is hinged to the lock body.

[0007] The lock body is internally provided with a screw, a nut and a stop head. The nut abuts against the stop head through an inclined surface. The screw passes through the top of the lock body and is threadedly connected to the nut. The stop head is provided with a return spring for its reset.

[0008] On one side of the nut of the lock body, there is a first screw post. On one side of the stop head of the lock body, there is a second screw post. The nut and the stop head are correspondingly installed on the first screw post and the second screw post through a bottom plate.

[0009] The stop head is provided with a through groove, and the through groove is sleeved on the second screw post. The return spring is internally arranged along the length direction of the through groove, and the two ends of the return spring respectively abut against the stop head and the second screw post.

[0010] The lock core passes through the top of the lock body and is connected to the lock tongue. The lock tongue can rotate at the bottom of the lock body.

[0011] Above the lock tongue, there are two spring pieces, and the two spring pieces clamp the core body of the lock core.

[0012] Advantages of the present utility model: By adopting the structure of hinging the handle with the lock body, the detachment of the handle is effectively avoided. At the same time, the limiting position when the handle rotates relative to the lock body is controlled by the ball and the spring, thereby setting the rotation gears of the handle relative to the lock body, realizing the free switching of the opening angle, freeing both hands, and making the opening and closing of the handle smooth, the operation simple, and the handling feeling strong. Brief Description of the Drawings

[0013] Figure 1 It is a three-dimensional view (without key) of the flip-type small flat lock with gears of the present utility model;

[0014] Figure 2 is Figure 1 exploded view (with key);

[0015] Figure 3 is Figure 1 longitudinal sectional view. Detailed Description of the Embodiment

[0016] The present utility model will be further described in detail below with reference to the drawings.

[0017] As Figure 1 , 2 , and Figure 3 show, the flip-type small flat lock with gears includes a handle 1, a lock core 2, a lock tongue 3, and a lock body 4. One end of the handle 1 is embedded in the installation groove 6 at one end of the lock body 4 through an ear plate 5, and the ear plate 5 is hinged to the lock body 4 through a roll pin 7. A sunk groove 8 is provided on one side of the installation groove 6, and a cavity 11 for placing a ball 9 and a spring 10 is provided below the sunk groove 8, and the cavity 11 communicates with the installation groove 6. A step 12 is provided at the bottom of the ear plate 5, the top of the step 12 abuts against the ball 9, the ball 9 longitudinally presses the spring 10 against the bottom of the cavity 11, and a groove 13 is provided on the side of the step 12.

[0018] When the top of the step 12 abuts against the ball 9 to limit the handle 1, the handle 1 and the lock body 4 are closed; when the handle 1 is flipped open relative to the lock body 4, the top of the step 12 rotates along the ball 9. When the ball 9 is caught in the step 12 to limit the handle 1, the handle 1 opens at a smaller angle, which is the first gear; when the handle 1 is continuously opened, the step 12 rotates along the ball 9. When the ball 9 is caught in the groove 13 to limit the handle 1 again, the handle 1 opens at a larger angle, which is the second gear. This hierarchical limiting structure realizes the free switching of the opening angle of the handle through the ball and the spring, improves the production efficiency, reduces the production cost, makes the opening and closing of the handle smooth, liberates the hands for operation at the same time, has a simple operation and a strong handling feeling, and there is no need to worry about the handle falling off the lock body.

[0019] The other end of the lock body 4 forms an internal cavity 19 by closing the bottom of the lock body 4 through a bottom plate 18. The screw 14, nut 15 and stop 16 are placed in the internal cavity 19, and the nut 15 abuts against the stop 16 through an inclined surface 17. The first screw post 20 and the second screw post 21 are limited along the length direction of the internal cavity 19, and the bottom plate 18 and the lock body 4 are fixed by installing the first screw 22 on the first screw post 20 and the second screw post 21 respectively. The stop 16 is provided with a through groove 23, the through groove 23 is sleeved on the second screw post 21, and a return spring 24 is internally placed along the length direction of the through groove 23. The two ends of the return spring 24 abut against the stop 16 and the second screw post 21 respectively.

[0020] The top of the lock body 4 is provided with an operation hole 31. The screw 14 is inserted into the lock body 4 and is concentric with the operation hole 31, and is threadedly connected with the nut 15. The screw 14 is an internal hexagonal head screw, and the internal hexagonal head of the screw 14 is covered by the handle 1 when the handle 1 is closed. When the handle 1 is opened to the first gear or the second gear, the handle 1 is flipped open relative to the lock body 4. An Allen wrench is inserted into the operation hole 31 to adjust the screw 14, and the screw 14 is loosened. Under the screw drive of the screw 14 and the nut 15, the nut 15 pushes the stop 16 to move outwards along the inclined surface 17, so that the stop 16 locks the window screen profile. On the contrary, when the screw 14 is tightened, the nut 15 moves in the reverse direction along the inclined surface 17, and the return spring 24 rebounds and resets to make the stop 16 retract inwards along the inclined surface 17, so that the stop 16 leaves the window screen profile, and the lock body 4 can be removed very conveniently. This method can eliminate the cumbersome process of screw installation and realize the simple installation and disassembly of the lock body and the window screen by changing the movement direction through screw drive.

[0021] The top of the lock body 4 is provided with a mounting hole 25. The lock core 2 is placed in the mounting hole 25. The bottom of the lock core 2 is clamped to the lock tongue 3. There are two spring pieces 26 above the lock tongue 3. The two spring pieces 26 clamp the core body 27 of the lock core 2. The two spring pieces 26 make the lock tongue 3 have elasticity during the rotation process, which is convenient for the lock tongue 3 to reset and the lock tongue 3 to be clamped to the lock seat. The bottom of the lock tongue 3 is fixed to the bottom of the lock core 2 through a second screw 28. The lock tongue 3 is arranged parallel to the bottom of the lock body 4, and the height of the lock tongue 3 is lower than the bottom of the lock body 4. The lock core 2 is embedded in the lock body 4, and the core hole 29 of the lock core 2 is covered by the handle 1 when the handle 1 is closed. When the handle 1 is opened to the first gear or the second gear, the handle 1 is flipped open relative to the lock body 4. The core hole 29 can be structures such as a large flat head, a small flat head, a cross slot, etc., such as Figure 2As shown, there is a cross-slot structure. A first marking point 32 is provided at the slot position corresponding to the core hole 29. At the same time, a second marking point 33 is provided on the lock body 4 at the mounting hole 25. Insert the key 30 into the core hole 29 and rotate it counterclockwise by 90°, so that the locking tongue 3 rotates 90° to the left and is screwed into the lock seat of the screen window frame body, thus locking the window. At this time, the first marking point 32 and the second marking point 33 are staggered; conversely, insert the key 30 into the core hole 30 and rotate it clockwise by 90°, so that the locking tongue 3 rotates 90° to the right and retracts into the lock body, thus unlocking the window. At this time, the first marking point 32 and the second marking point 33 are aligned. It should be noted that when the locking tongue 3 rotates outwards, it can rotate to both sides of the lock body 4, and is not limited to rotating to only one side of the lock body 4.

Claims

1. A flip-top small flat lock with gear position, characterized in that: The invention comprises a handle (1), a lock core (2), a lock tongue (3) and a lock body (4); the lock core (2) is mounted on the lock body (4); the lock core (2) can drive the lock tongue (3) to extend or retract relative to the lock body (4); the handle (1) is rotatably connected to the lock body (4); and the handle (1) can be limited to the lock body (4) at at least two angles.

2. The flip-top small flat lock with gear position according to claim 1, characterized in that: The lock body (4) is provided with a ball (9) and a spring (10) pressed against each other. A step (12) and a groove (13) for clamping the ball (9) are provided at the connection between the handle (1) and the lock body (4). The groove (13) is provided on the side of the step (12), and the top of the step (12) abuts against the ball (9).

3. The flip-top small flat lock with gear position according to claim 1 or 2, characterized in that: The handle (1) is hinged to the lock body (4).

4. The flip-top small flat lock with gear position according to claim 1, characterized in that: The lock body (4) is internally provided with a screw (14), a nut (15) and a stopper (16); the nut (15) and the stopper (16) are in contact with each other via an inclined surface (17); the screw (14) passes through the top of the lock body (4) and is threadedly connected to the nut (15); and the stopper (16) is provided with a reset spring (24) for resetting the stopper.

5. The flip-top small flat lock with gear position according to claim 4, characterized in that: The lock body (4) is provided with a first screw column (20) on one side of the nut (15), and the lock body (4) is provided with a second screw column (21) on one side of the stopper (16). The nut (15) and the stopper (16) are correspondingly mounted on the first screw column (20) and the second screw column (21) through a bottom plate (18).

6. The flip-top small flat lock with gear position according to claim 5, characterized in that: The stopper (16) is provided with a through slot (23), the through slot (23) is sleeved on the second screw column (21), the return spring (24) is built into the through slot (23) along the length direction thereof, and the two ends of the return spring (24) are respectively in contact with the stopper (16) and the second screw column (21).

7. The flip-top small flat lock with gear position according to claim 1, characterized in that: The lock core (2) passes through the top of the lock body (4) and is connected to the lock tongue (3); the lock tongue (3) is capable of rotating at the bottom of the lock body (4).

8. The flip-top small flat lock with gear position according to claim 7, characterized in that: Two spring sheets (26) are arranged above the lock tongue (3), and the two spring sheets (26) clamp the core body (27) of the lock core (2).

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