Screen window lock

Abstract

The utility model discloses a screen window lock which comprises a lock body and a bottom plate, a lock tongue is vertically and movably arranged in the lock body, a switch sliding block is horizontally and movably arranged in the lock body, a lock cylinder is rotatably arranged in the lock body, and the lock cylinder is provided with a key; the lock tongue comprises a pressing convex part, a limiting part and a lock rod part, the lock rod part is sleeved with a first reset spring, the switch sliding block comprises a shifting convex part, an abutting part and an ejector rod part, the abutting part can abut against the limiting part through movement, the ejector rod part is sleeved with a second reset spring, the lock cylinder comprises an ejector block, and the ejector block can abut against the ejector rod part through rotation. The screen window lock has the advantages of being simple in structure, convenient to use and high in safety.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window hardware accessories, specifically to a screen window lock. Background Technology

[0002] In homes and offices, window screens are commonly used to prevent insects, leaves, and other debris from entering, while also maintaining ventilation and reducing direct sunlight. A window screen lock is a locking device installed on the screen to secure it in its open or closed position, preventing accidental sliding or being pushed open by external force. Currently, traditional window screen locks require rotating or pulling the lock body to lock, but most do not have child lock functions. This can easily lead to accidental unlocking by the elderly or children, compromising the safety of the window screen. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a screen lock that is simple in structure, easy to use, and highly secure.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A screen window lock includes a lock body and a base plate fixedly disposed at the bottom of the lock body. The lock body is provided with a bolt that can be moved vertically, a switch slider that can be moved horizontally, and a lock cylinder that can be rotated. The lock cylinder is equipped with a key.

[0006] The latch includes a pressing protrusion, a limiting part, and a locking rod part. A first return spring is sleeved on the locking rod part. The switch slider includes a toggle protrusion, an abutting part, and a push rod part. The abutting part can move to form an abutment with the limiting part. A second return spring is sleeved on the push rod part. The lock cylinder includes a top block. The top block can rotate to form an abutment with the push rod part.

[0007] As a further improvement to the above technical solution:

[0008] The top of the lock body has a pressing hole for the pressing protrusion to pass through, a turning hole for the turning protrusion to pass through, and a keyhole for the key to pass through.

[0009] The base plate has a recessed cavity for the reciprocating movement of the limiting part. The bottom wall of the recessed cavity has a through hole for the locking rod to pass through. One end of the first return spring abuts against the limiting part, and the other end abuts against the bottom wall of the recessed cavity.

[0010] The lock body is provided with an abutment plate, and the abutment plate has an opening slot for the push rod to pass through. One end of the second return spring abuts against the abutment part, and the other end abuts against the abutment plate.

[0011] A cylinder for rotatably connecting with the lock cylinder is formed on the base plate, and a third return spring is provided between the cylinder and the lock cylinder.

[0012] The lock body has threaded connecting posts at both ends. The locking screw passes through the base plate and is threadedly connected to the threaded connecting posts so that the base plate is fixedly connected to the lock body.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This utility model of a screen lock includes a bolt, a switch slider, and a lock cylinder. The bolt locks the screen by moving vertically, while the switch slider unlocks the screen by moving horizontally. The lock cylinder also features a child lock function. Specifically, an adult user can use a key to rotate the top block on the lock cylinder until it abuts against the top rod, thus blocking the horizontal movement of the switch slider. Children or the elderly cannot unlock the screen without a key, effectively preventing accidental unlocking by the elderly or children. This design offers advantages such as simple structure, ease of use, and high security. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a screen window lock.

[0016] Figure 2 This is an exploded view of a screen window lock.

[0017] Figure 3 This is a structural diagram of the latch, switch slider, and lock cylinder.

[0018] Figure 4 This is a structural diagram of a screen window lock viewed from below.

[0019] Figure 5 This is a half-section diagram of the lock cylinder on the base plate.

[0020] Legend:

[0021] 1. Lock body; 101. Pressing hole; 102. Actuating hole; 103. Key hole; 104. Abutment plate; 105. Opening groove; 106. Threaded connecting post; 2. Base plate; 201. Cavity; 202. Through hole; 203. Cylindrical part; 3. Lock tongue; 301. Pressing protrusion; 302. Limiting part; 303. Lock rod part; 4. Switch slider; 401. Actuating protrusion; 402. Abutment part; 403. Push rod part; 5. Lock cylinder; 501. Top block; 6. Key; 7. First return spring; 8. Second return spring; 9. Third return spring; 10. Locking screw. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5 As shown, the screen lock of this embodiment includes a lock body 1 and a base plate 2 fixedly disposed at the bottom of the lock body 1. The lock body 1 is provided with a lock tongue 3 that can be moved vertically, a switch slider 4 that can be moved horizontally, and a lock cylinder 5 that can be rotated. The lock cylinder 5 is equipped with a key 6. The lock tongue 3 includes a pressing protrusion 301, a limiting part 302, and a locking rod part 303. A first return spring 7 is sleeved on the locking rod part 303. The switch slider 4 includes a toggle protrusion 401, an abutment part 402, and a push rod part 403. The abutment part 402 can abut against the limiting part 302 by moving. A second return spring 8 is sleeved on the push rod part 403. The lock cylinder 5 includes a top block 501. The top block 501 can abut against the push rod part 403 by rotating. This screen lock includes a bolt 3, a slider 4, and a cylinder 5. The bolt 3 locks the screen by moving vertically, while the slider 4 unlocks the screen by moving horizontally. The cylinder 5 is designed to be child-safe. Specifically, an adult user can use a key 6 to rotate the top block 501 on the cylinder 5 until it abuts against the top rod 403, thus blocking the horizontal movement of the slider 4. Without the key 6, children or the elderly cannot push the slider 4 to unlock the screen, effectively preventing accidental unlocking by the elderly or children. It has the advantages of simple structure, convenient use, and high security.

[0024] Preferably, the top of the lock body 1 is provided with a pressing hole 101 through which the pressing protrusion 301 passes, a turning hole 102 through which the turning protrusion 401 passes, and a key hole 103 through which the key 6 passes, so that the user can perform corresponding actions on the pressing protrusion 301, the turning protrusion 401 and the key 6 from the outside, making it more convenient and efficient to use.

[0025] Preferably, the base plate 2 has a recess 201 formed for the reciprocating movement of the limiting part 302. The bottom wall of the recess 201 has a through hole 202 for the locking rod part 303 to pass through. One end of the first return spring 7 abuts against the limiting part 302, and the other end abuts against the bottom wall of the recess 201.

[0026] Preferably, the lock body 1 is provided with an abutment plate 104, and the abutment plate 104 is provided with an opening groove 105 for the push rod part 403 to pass through. One end of the second return spring 8 abuts against the abutment part 402, and the other end abuts against the abutment plate 104.

[0027] Preferably, the base plate 2 has a cylinder 203 formed on it for rotatably connecting with the lock cylinder 5, and a third return spring 9 is provided between the cylinder 203 and the lock cylinder 5. In this embodiment, the bottom of the lock cylinder 5 has a blind hole for inserting into the cylinder 203, and the third return spring 9 is provided in the blind hole to keep the lock cylinder 5 pressed against the lock body 1, preventing the lock cylinder 5 from malfunctioning due to loosening and improving reliability.

[0028] Preferably, threaded connecting posts 106 are provided at both ends of the lock body 1. The locking screw 10 passes through the base plate 2 and is threadedly connected to the threaded connecting posts 106, so that the base plate 2 is fixedly connected to the lock body 1. The structure is simple and the installation and disassembly are convenient and quick.

[0029] In practical application, the screen lock of this utility model is installed on the screen window. When it is necessary to lock the screen window, first push the actuating protrusion 401 away from the pressing protrusion 301. At this time, the abutting part 402 compresses the second return spring 8. Then press the pressing protrusion 301 down. At this time, the limiting part 302 compresses the first return spring 7, so that the locking rod part 303 passes through the bottom plate 2 and into the screen window frame. Then release the actuating protrusion 401. Under the elastic deformation of the second return spring 8, push the abutting part 402 to move closer to the pressing protrusion 301. The abutting part 402 moves to the top of the limiting part 302 and forms an abutment. Release the pressing protrusion 301. The first return spring 7 cannot push the pressing protrusion 301 up, and thus cannot release the locking state between the locking rod part 303 and the screen window frame, thus achieving the purpose of locking the screen window. When it is necessary to unlock the screen window, push the actuating protrusion 401 away from the pressing protrusion 301. At this time, the abutment part 402 compresses the second return spring 8, and the abutment part 402 releases from the limit part 302. Under the elastic deformation of the first return spring 7, the pressing protrusion 301 is pushed up, and the locking rod part 303 retracts from the screen window frame. Then, release the actuating protrusion 401. Under the elastic deformation of the second return spring 8, the abutment part 402 is pushed to move closer to the pressing protrusion 301. The abutment part 402 moves to below the limit part 302, thus achieving the purpose of unlocking the screen window.

[0030] To prevent children from accidentally locking or unlocking the screen window, the key 6 is inserted into the lock cylinder 5. Turning the key 6 causes the lock cylinder 5 to rotate. When the top block 501 rotates to abut against the top rod 403, the pressing protrusion 301 is blocked and cannot move horizontally. Thus, children cannot lock or unlock the screen window by pushing the pressing protrusion 301, keeping the screen window in the desired active or locked state. To deactivate the child lock, simply turn the key 6 to prevent the top block 501 from abutting against the top rod 403. The operation is simple, convenient, and highly safe.

[0031] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A screen door lock comprising: The utility model provides a lock body (1) and fixedly arranged bottom plate (2) in bottom of lock body (1), lock tongue (3) can be vertically mobilely arranged in lock body (1), switch slider (4) can be horizontally mobilely arranged and lock cylinder (5) can be rotatably arranged in lock body (1), lock cylinder (5) is configured with key (6); The lock tongue (3) includes a pressing protrusion (301), a limiting portion (302), and a lock rod portion (303), the lock rod portion (303) is sleeved with a first reset spring (7), the switch slider (4) includes a poking protrusion (401), an abutting portion (402), and a top rod portion (403), the abutting portion (402) can be in abutment with the limiting portion (302) by moving, the top rod portion (403) is sleeved with a second reset spring (8), and the lock cylinder (5) includes a top block (501), the top block (501) can be in abutment with the top rod portion (403) by rotating.

2. The screen door lock of claim 1 wherein, The lock body (1) is provided with a pressing hole (101) for the pressing protrusion (301) to pass out, a poking hole (102) for the poking protrusion (401) to pass out, and a key hole (103) for the key (6) to pass in.

3. The screen door lock of claim 2 wherein, The bottom plate (2) is formed with a recess (201) for reciprocating movement of the limiting portion (302), and the recess (201) is provided with a through hole (202) for the lock rod portion (303) to pass out, one end of the first reset spring (7) is in abutment with the limiting portion (302), and the other end is in abutment with the bottom wall of the recess (201).

4. The screen door lock of claim 3 wherein, The lock body (1) is provided with an abutting plate (104), the abutting plate (104) is provided with an opening slot (105) for the top rod portion (403) to pass out, one end of the second reset spring (8) is in abutment with the abutting portion (402), and the other end is in abutment with the abutting plate (104).

5. The screen door lock of claim 4 wherein, The bottom plate (2) is formed with a cylinder (203) for rotation connection with the lock cylinder (5), and a third reset spring (9) is arranged between the cylinder (203) and the lock cylinder (5).

6. The screen door lock of claim 5 wherein, The lock body (1) is provided with threaded connection columns (106) at both ends, respectively, a locking screw (10) passes through the bottom plate (2) and is threadedly connected with the threaded connection columns (106), so that the bottom plate (2) is fixedly connected with the lock body (1).

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