Door and window middle lock
By designing the lock block and lock seat structure of the middle lock of the door and window, combining the elastic parts and the limiting parts, the tight closure and high universal adaptability of the door and window are achieved, and the problem of insufficient sealing in the prior art is solved.
Patent Information
- Application Number
- CN202422464879.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The universal adaptability of existing door and window intermediate locks is not high, resulting in insufficient sealing, and different intermediate locks are needed to lock different door and window sashes.
A door and window intermediate lock is designed, including a lock block and a lock seat installed on the door and window frame profile. The lock block is equipped with a fixed lock tongue and the lock seat is equipped with a movable lock buckle. Through the cooperation of elastic parts and limiting parts, the movable lock buckle is matched and locked with the fixed lock tongue, adapting to a variety of hinges.
The sealing and universal adaptability of doors and windows are improved, and the matching of the movable lock buckle and the fixed lock tongue are more compact, and they are suitable for more doors and windows with different hinges.
Smart Images
Figure CN223305574U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a middle lock for doors and windows, belonging to the technical field of door and window hardware accessories. Background Art
[0002] To ensure airtightness, doors and windows require locking components on all four sides. Existing doors and windows have hinges on two opposing sides, with a handle locking one side. The other side is mostly locked by the hinged sash connector, but this side lacks adequate sealing. Consequently, some intermediate locks have emerged on the market, designed to fit between the frame and sash profiles. However, the unique structures of the frame and sash locks make them difficult to universally adapt, and different door and window sashes require different intermediate locks. Utility Model Content
[0003] The utility model aims to provide a door and window intermediate lock which improves the airtightness of doors and windows and has high universal adaptability.
[0004] The utility model is realized through the following technical solutions:
[0005] A door and window intermediate lock is characterized by comprising a lock block mounted on the door and window frame profile and a lock seat mounted on the door and window sash, the lock block being provided with a fixed lock tongue, the lock seat being provided with a movable lock buckle, and the movable lock buckle being pressed against the fixed lock tongue to lock when the door and window sash is closed.
[0006] The door and window intermediate lock as described above is characterized in that an elastic member is provided between the lock seat and the movable lock catch, and the elastic member is located near the outer side of the door and window sash.
[0007] The door and window intermediate lock as described above is characterized in that the movable lock buckle is hinged to the lock seat.
[0008] The door and window intermediate lock as described above is characterized in that the fixed lock tongue has a convex arc surface, and the movable lock buckle has a concave arc surface matching the convex arc surface.
[0009] The door and window intermediate lock as described above is characterized in that the convex arc surface of the fixed lock tongue is symmetrical on both sides, and the movable lock buckle has a straight side surface connected to the concave arc surface.
[0010] The door and window intermediate lock as described above is characterized in that the locking block is provided with a limiting piece for limiting the movable lock buckle.
[0011] The door and window intermediate lock as described above is characterized in that the movable lock buckle is hinged to the lock seat via a hinge shaft.
[0012] The door and window intermediate lock as described above is characterized in that the elastic member is two springs arranged on the lock seat.
[0013] The door and window intermediate lock as described above is characterized in that the limiting member is a limiting strip.
[0014] The door and window intermediate lock as described above is characterized in that the fixed lock tongue is a symmetrical protrusion arranged along the axial direction.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] When closing a door or window, the movable lock catch contacts the convex curved surface of the fixed lock tongue and then rotates about the hinge axis, aligning the concave curved surface with the convex curved surface to complete the closure. The elastic member presses against the outer sides of the movable lock catch and the fixed lock tongue, closing the door or window more tightly. Furthermore, the movable lock catch is mounted on the door or window sash and rotates to mate with the lock block as the sash rotates and closes, providing greater compatibility and adaptability to a wider range of doors and windows with different hinge structures. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the exploded structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the exploded structure of the movable lock buckle and the fixed lock tongue of the utility model;
[0020] Figure 4 This is a top view of the structure of the utility model in application state;
[0021] Figure 5 This is a schematic diagram of the application state structure of the utility model. DETAILED DESCRIPTION
[0022] The present invention will be further described in detail below with reference to specific embodiments.
[0023] like Figure 1-5 As shown, a door and window center lock comprises a lock block 1 mounted on a door and window frame profile 100 and a lock base 2 mounted on a door and window sash 200. The lock block 1 is provided with a fixed lock tongue 11, and the lock base 2 is provided with a movable lock catch 3. The movable lock catch 3 is pressed against the fixed lock tongue 11 when the door and window sash is closed. The movable lock catch 3 rotates on the door and window sash to mate with the fixed lock tongue 11 to achieve locking. The movable lock catch 3 is not affected by changes in door and window frame profiles and hinges, providing greater compatibility and is suitable for center closure of a variety of door and window sashes.
[0024] Preferably, an elastic member 4 is provided between the lock base 2 and the movable lock catch 3, and the elastic member 4 is located near the outer side of the door or window sash. When the door or window sash is closed, the elastic member 4 is compressed, and the reaction force presses the movable lock catch 3 to make it fit tightly with the fixed lock tongue 11.
[0025] Preferably, the movable lock buckle 3 is hinged to the lock seat 2, and more preferably, the movable lock buckle 3 is hinged to the lock seat 2 through a hinge shaft. The movable lock buckle 3 rotates around the hinge shaft, and the hinge shaft runs through the entire movable lock buckle 3, so that the movable lock buckle 3 rotates more stably, the connection strength is better, and it is more durable.
[0026] In a specific embodiment of the present invention, the fixed lock tongue 11 has a convex arc surface 110, and the movable lock buckle 3 has a concave arc surface 31 that matches the convex arc surface 110. Preferably, the convex arc surface 110 and the concave arc surface 31 are both smooth surfaces, and the convex arc surface 110 of the fixed lock tongue 11 is symmetrical on both sides, so that the matching process is smooth and silent, and it is not easy to loosen after matching and closing. Furthermore, the movable lock buckle 3 has a straight side surface 32 connected to the concave arc surface 31, and the straight side surface 32 increases the thickness of the movable lock buckle 3, matches the fixed lock tongue 11, closes more tightly and firmly, reduces loss, and extends service life. Furthermore, the fixed lock tongue 11 is a symmetrical convex portion arranged along the axial direction, and the fixed lock tongue 11 has the largest physical volume, high closing strength, and long service life.
[0027] To prevent the door and window from being locked mid-lock, the lock block 1 is equipped with a stopper 12 that limits the position of the movable lock catch 3. Stopper 12 is located near the outside of the door and window frame. When the door and window sash is closed, stopper 12 and elastic member 4 are located on the same side of the fixed lock tongue 11. The elastic member 4 is squeezed by the movable lock catch 3, which reacts to press the movable lock catch 3 against the stopper 12, improving the airtightness. Preferably, the elastic member 4 is two springs mounted on the lock base 2, and the stopper 12 is a limit bar, which increases the pressure area and improves the closing effect. Of course, the elastic member 4 can also be another elastic member mounted on the back of the movable lock catch 3.
[0028] During the closing process of the door and window of the present invention, the free end of the movable lock catch 3 closest to the fixed lock tongue 11 is first connected with the fixed lock tongue 11 and the limit member 12, and then rotated to make the concave arc surface 31 fit and match the convex arc surface 110 completely. After the door and window are completely closed, the movable lock catch 3 is squeezed by the elastic member 4 and abuts against the limit member 12 and the fixed lock tongue 11, thus completing the tight closure.
Claims
1. A door and window intermediate lock, characterized by: The invention comprises a lock block (1) installed on a door and window frame profile and a lock seat (2) installed on a door and window sash. The lock block (1) is provided with a fixed lock tongue (11), and the lock seat (2) is provided with a movable lock buckle (3). When the door and window sash is closed, the movable lock buckle (3) is pressed against the fixed lock tongue (11) to match and lock the fixed lock tongue.
2. The door and window intermediate lock according to claim 1, characterized in that An elastic member (4) is provided between the lock seat (2) and the movable lock catch (3), and the elastic member (4) is located near the outer side of the door or window sash.
3. The door and window intermediate lock according to claim 1, characterized in that The movable lock buckle (3) is hinged to the lock seat (2).
4. The door and window intermediate lock according to claim 1, characterized in that The fixed locking tongue (11) has a convex arc surface (110), and the movable lock buckle (3) has a concave arc surface (31) matching the convex arc surface (110).
5. The door and window intermediate lock according to claim 4, characterized in that The convex arc surface (110) of the fixed lock tongue (11) is symmetrical on both sides, and the movable lock buckle (3) has a straight side surface (32) connected to the concave arc surface (31).
6. The door and window intermediate lock according to claim 1, characterized in that The locking block (1) is provided with a limiting member (12) for limiting the position of the movable lock buckle (3).
7. The door and window intermediate lock according to claim 3, characterized in that The movable lock buckle (3) is hinged to the lock seat (2) via a hinge shaft.
8. The door and window intermediate lock according to claim 2, characterized in that The elastic members (4) are two springs arranged on the lock seat (2).
9. The door and window intermediate lock according to claim 6, characterized in that The limiting member (12) is a limiting strip.
10. The door and window intermediate lock according to claim 1, characterized in that The fixed locking tongue (11) is a symmetrical convex portion arranged along the axial direction.