A door closer

Abstract

The utility model relates to a door latch, have base, face lid, lock tongue and limiting piece, face lid covers and closes on the upper end of base and is equipped with T-shaped guide slot, lock tongue corresponds to install in the accommodation slot of base and is affected by elastic part, make lock tongue keep corresponding stretch out and lock posture, limiting piece is positioned on lock tongue and moves along with lock tongue, limiting piece has the upper side of the hanging arm that the guide limiting arm is pasted and presses on base, give the movement guide and limit, the external poking piece inserts and leans against the contact boss on limiting piece from T-shaped guide slot, in order to operate poking piece to drive lock tongue to retract, reach the lockout work, the poking piece has T-shaped contact head, and T-shaped guide slot cooperation guides the poking piece movement and gives the limit. The door latch structure is simple, the body is small and exquisite, installs to the door panel, can utilize T-shaped contact head and T-shaped guide slot clamping relation, catches the poking piece and can carry the door panel, realizes the disassembly and assembly door panel, and the door panel also does not need and door frame hinge connection, optimizes installation and uses.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a door latch lock. Background Technology

[0002] Traditional door panels are hinged to the door frame on one side, while a lock is installed on the other side for latching. This design requires hinge installation, and the door panel cannot usually be removed as a whole. Although some improved hinges make it easier to disassemble and assemble the entire door panel, there are still inconveniences in alignment and assembly. Subsequently, some designs directly install door stop locks on both sides of the door panel, using the two door stop locks to hold the door to the door frame. However, for easy access, door stop locks usually also need to be designed with handles, such as the flat lock in Chinese Patent No. 202420125095.9. To assemble and place the handle, the overall size of the lock needs to be enlarged, which is not conducive to the miniaturization of locks. Further design of new door stop locks is needed. Summary of the Invention

[0003] The purpose of this utility model is to provide a door latch lock with a simple structure that is integrated into the door panel. The door panel can be directly disassembled and assembled by relying on the toggle piece, and the door panel does not need to be connected to the door frame hinge, thus optimizing installation and use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A door latch lock includes a base, a faceplate, a latch, and a limiting member. The front end of the base is recessed inward to form a receiving groove, and an elastic member is provided in the receiving groove. A window communicating with the receiving groove is provided at the upper end of the base. The faceplate covers the upper end of the base and has a T-shaped guide groove, which is vertically connected to the window. The latch is installed in the receiving groove and is acted upon by the elastic member, causing the front end of the latch to extend from the base and maintain a corresponding posture, establishing a locking state. The limiting member is positioned on the latch and moves with the latch. The limiting member has a guide limiting arm and a contact boss. The base extends forward into the receiving groove, while the front end of the base has a hanging arm that extends backward into the receiving groove. The guide limiting arm presses flat against the upper side of the hanging arm, so that when the limiting member moves with the lock tongue, the guide limiting arm moves against the hanging arm. The contact boss extends upward into the window, and the contact boss is used to abut against the external actuating plate, so that the actuating plate can be operated to drive the lock tongue to retract, thereby achieving the unlocking operation. The actuating plate has a T-shaped contact head, which corresponds to the T-shaped guide groove and extends into and abuts against the contact boss, so that the actuating plate can push the lock tongue to retract through the limiting member. The T-shaped guide groove provides guidance and limitation for the movement of the actuating plate.

[0005] The above solution is further provided that the rear end of the locking tongue has an upwardly protruding backrest, and an insert groove is provided on the front side of the backrest. The insert groove is adapted to be fitted and assembled with the limiting member, and the limiting member abuts against the backrest.

[0006] A further improvement of the above solution is that the backrest is provided with a through hole, which is adapted to the installation and positioning of an elastic element. The elastic element is a compression spring. One end of the elastic element is supported on the rear end face of the receiving groove, while the other end of the elastic element extends into the through hole and supports the limiting element. The corresponding part of the limiting element is provided with a positioning post, which extends into the through hole and sleeves the elastic element.

[0007] The above solution is further provided with a guide groove on the outer periphery of the latch, the guide grooves are respectively located on the left and right sides of the latch extension and retraction direction, and the guide grooves extend along the latch extension and retraction direction; the guide grooves are assembled with the guide ribs preset on the inner side wall of the receiving groove.

[0008] A further improvement in the above scheme is that the guide groove and the mounting groove are triangularly distributed on the lock tongue.

[0009] A further improvement in the above scheme is that the side shape of the locking tongue and the limiting member is L-shaped.

[0010] Furthermore, the above solution includes a first wing-shaped buckle on the left and right outer side walls of the limiting member. After the limiting member is installed in the mounting groove, it is also snapped onto the inner side wall of the receiving groove by the first wing-shaped buckle, so that the limiting member is stably installed in the mounting groove and can follow the movement of the locking tongue.

[0011] A further improvement of the above solution is that the left and right outer surfaces of the base are provided with second wing-shaped buckles so that when the base is installed on the door panel, the second wing-shaped buckles can be used to lock the base off the door panel.

[0012] The door latch of this utility model has a simple, scientific and reasonable structure, and is compact in size. It is integrated into the door panel and can be directly unlocked and the door panel can be disassembled and assembled by relying on the toggle piece. It is convenient and practical, and the door panel does not need to be connected to the door frame hinge, thus optimizing the installation and use. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the preferred embodiment of this invention; Appendix Figure 2 for Figure 1 A cross-sectional view of the embodiment; Appendix Figure 3 for Figure 1 Schematic diagram of the structural breakdown of the embodiment; Appendix Figure 4 for Figure 1 A schematic diagram of the base and cover assembly structure in the embodiment; Appendix Figure 5 for Figure 1 A schematic diagram of the contact boss and the actuating piece abutting structure in an embodiment; Appendix Figure 6 This is a schematic diagram showing the present invention assembled onto a door panel for use; Appendix Figure 7 for Figure 6 A diagram showing the disassembly and assembly of the door panel. Detailed Implementation

[0014] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0015] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] See Figures 1-7The diagram shown is a preferred embodiment of the present invention. The present invention relates to a door latch lock, which has a base 1, a cover 2, a latch 3, and a limiting member 4. The base 1 is a square box shape, with its front end recessed to form a receiving groove 11. An elastic member 5 is provided in the receiving groove 11, and the receiving groove 11 has a certain concave depth to meet subsequent working needs. A window 12 communicating with the receiving groove 11 is provided at the upper end of the base 1. The cover 2 covers the upper end of the base 1 and has a T-shaped guide groove 21. The T-shaped guide groove 21 is vertically connected to the window 12 and extends along the concave direction of the receiving groove 11, forming a lock hole. The latch 3 is correspondingly installed in the receiving groove 11 and is acted upon by the elastic member 5, causing the front end of the latch 3 to extend from the base 1 and maintain a corresponding posture, establishing a locking state. The latch 3 can be retracted to unlock the door through operation. The limiting member 4 is positioned on the locking tongue 3 and moves with the locking tongue 3. The limiting member 4 is provided with a guide limiting arm 41 and a contact boss 42. The guide limiting arm 41 protrudes forward in the receiving groove 11 in a cantilever shape, while the front end of the base 1 has a hanging arm 13 that extends backward into the receiving groove. The guide limiting arm 41 presses flat against the upper side of the hanging arm 13, so that when the limiting member 4 moves with the locking tongue 3, the guide limiting arm 41 moves against the hanging arm 13, thus guiding and limiting the movement. The contact boss 42 extends upward from the root of the guide limiting arm 41 into the window 12. The contact boss 42 is used to abut against the external actuating piece 6 so that the actuating piece 6 can be operated to drive the bolt 3 to retract, thereby achieving the unlocking operation. The actuating piece 6 has a T-shaped contact head 61, which corresponds to the T-shaped guide groove 21 and extends into and abuts against the contact boss 42, so that the actuating piece 6 can push the bolt 3 to retract through the limiting member 4. The shape of the T-shaped guide groove 21 provides guidance and limitation for the movement of the actuating piece 6, improving operability. The exposed part of the actuating piece 6 is suitable for hand operation, which is conducive to pressing and pushing the bolt.

[0017] Figure 2 , 3As shown in Figure 4, in this embodiment, the rear end of the latch 3 has an upwardly protruding backrest 31, and an insert groove 32 is provided on the front side of the backrest 31. The insert groove 32 is adapted to be fitted and assembled with the limiting member 4, and the limiting member 4 abuts against the backrest 31. Preferably, the side shapes of the latch 3 and the limiting member 4 are L-shaped, and the limiting member 4 extends partially to the front end of the latch 3, locking together with the latch, thus increasing the mechanical structure of the lock. The backrest 31 has a through hole 311, which is adapted to accommodate the installation and positioning of the elastic element 5. The elastic element 5 is a compression spring. One end of the elastic element 5 is supported on the rear end face of the receiving groove 11, while the other end of the elastic element 5 extends into the through hole 311 and supports the limiting element 4. The through hole 311 provides limiting and guiding functions, which helps stabilize the expansion and contraction deformation of the elastic element 5. The corresponding part of the limiting element 4 has a positioning post 43, which extends into the through hole 311 and sleeves the elastic element 5, which facilitates the installation and support of the elastic element 5. The elastic element 5 is a compression spring, which has a simple structure, is easy to manufacture and assemble, and utilizes the axial expansion and contraction of the compression spring to achieve the directional expansion and contraction movement of the locking tongue 3, satisfying the locking and unlocking requirements. In this embodiment, after the limiting element 4 is embedded in the mounting groove 32, the corresponding axial locking of the limiting element 4 and the locking tongue forms a linkage relationship, realizing that the elastic element 5 supports the limiting element 4 and drives the locking tongue to extend.

[0018] In this embodiment, the outer periphery of the latch 3 is provided with a guide groove 33, which is distributed on the left and right sides of the latch extension and retraction direction and extends along the extension and retraction direction of the latch. The guide groove 33 is assembled with the guide rib 14 preset on the inner side wall of the receiving groove 11 to increase the assembly structure and relative movement stability, and improve the performance of the door latch. The guide groove 33 and the mounting groove 32 are triangularly distributed on the latch 3. In this way, when the latch 3 moves in extension and retraction, the guide groove 33 and the guide rib 14 guide and limit on the left and right sides, and the guide limiting arm 41 and the hanging arm 13 guide and limit on the upper side, so that the latch 3 obtains multi-point limiting control, increases the movement stability of the latch, and makes extension and retraction smooth and accurate. It is convenient to manufacture and also helps to obtain better product structure in a small structural space, thus improving the performance.

[0019] The left and right outer walls of the limiting member 4 are also provided with first wing-shaped buckles 44. After the limiting member 4 is embedded in the mounting groove 32, it is also snapped onto the inner wall of the receiving groove 11 by the first wing-shaped buckles 44, so that the limiting member 4 is stably installed in the mounting groove 32 and can move with the locking tongue 3. During assembly, the locking tongue 3 is inserted and installed along the receiving groove 11, while the limiting member 4 is inserted from the window 12. After the limiting member 4 is embedded in the mounting groove 32, it is secured by the first wing-shaped buckles 44 to prevent it from falling off. Then the cover 2 is placed on top to cover it. The cover 2 can be assembled and connected to the base 1 by buckles or screws, and has the characteristics of being replaceable and maintainable.

[0020] In this embodiment, the left and right outer surfaces of the base 1 are provided with second wing-shaped buckles 15. The second wing-shaped buckles 15 have corresponding elasticity so that when the base 1 is installed on the door panel, the second wing-shaped buckles 15 can be used to lock the base off the door panel, which is convenient for manufacturing and assembly.

[0021] like Figure 6 , 7 As shown, the door stop lock of this utility model is embedded into the corresponding receiving part on the door panel 100, and the second wing-shaped buckle 15 is used to prevent it from falling off, so that the door stop lock and the door panel 100 are integrated as one. The door stop lock is installed on the opposite sides of the door panel in the figure. By holding the toggle piece 6 and pressing it, the bolt is retracted. At this time, the T-shaped contact head 61 of the toggle piece 6 and the T-shaped guide groove 21 are used to prevent it from falling off. The toggle piece 6 can be grasped to carry the door panel and move it, which is convenient for the door panel to be embedded and assembled with the corresponding door frame 200. Then, the toggle piece 6 is released and the bolt 3 is released, allowing the bolt to extend and insert into the preset lock groove on the door frame to form a lock. In this way, the door panel can be installed on the door frame. When the door panel needs to be opened, the actuating piece 6 can be pressed again, causing it to slide along the T-shaped guide groove 21. The T-shaped contact head 61 pushes the contact boss 42, which, through the limiting member 4, causes the bolt to retract, thus unlocking the door. At this point, the T-shaped contact head 61 slides to the narrowing position of the T-shaped guide groove 21, forming a lock. Then, the actuating piece 6 can be grasped and pulled outward to remove the door panel 100 from the door frame. The actuating piece 6 can be designed in the shape of a key for easy gripping. Compared to traditional handles, it is compact in size and does not require storage space for the actuating piece, which is beneficial for the overall compact design of the lock.

[0022] The door latch of this utility model has a simple, scientific and reasonable structure, and is compact in size. It is integrated into the door panel and can be directly unlocked and the door panel can be disassembled and assembled by relying on the toggle piece. It is convenient and practical, and the door panel does not need to be connected to the door frame hinge, thus optimizing the installation and use.

[0023] Of course, the above detailed description of the present utility model in conjunction with the embodiments is only for illustrating the technical concept and features of the present utility model. Its purpose is to enable those skilled in the art to understand the content of the present utility model and implement it. Therefore, all equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A door latch lock, characterized in that: The door latch has a base (1), a cover (2), a latch (3), and a limiting member (4). The front end of the base (1) is recessed inward to form a receiving groove (11), and an elastic member (5) is provided in the receiving groove (11). A window (12) communicating with the receiving groove (11) is provided at the upper end of the base (1). The cover (2) is closed on the upper end of the base (1) and is provided with a T-shaped guide groove (21). The T-shaped guide groove (21) is connected to the window (12) vertically. The latch (3) is installed in the receiving groove (11) and is subjected to the action of the elastic member (5), so that the front end of the latch (3) extends out from the base (1) and maintains the corresponding posture to establish a locking state. The limiting member (4) is positioned on the latch (3) and moves with the latch (3). The limiting member (4) is provided with a guide limiting arm (41) and a contact boss (42). 1) The base (1) extends forward in the receiving groove (11), and the front end of the base (1) has a hanging arm (13) that extends backward into the receiving groove; the guide limiting arm (41) presses flat against the upper side of the hanging arm (13), so that when the limiting member (4) moves with the locking tongue (3), the guide limiting arm (41) moves against the hanging arm (13); the contact boss (42) extends upward into the window (12), and the contact boss (42) is used to interact with the external dial. The movable piece (6) abuts to allow the actuating piece (6) to drive the bolt (3) to retract, thereby unlocking the device. The actuating piece (6) has a T-shaped contact head (61), which extends into the contact boss (42) corresponding to the T-shaped guide groove (21), allowing the actuating piece (6) to push the bolt (3) to retract through the limiting member (4). The T-shaped guide groove (21) provides guidance and limitation for the movement of the actuating piece (6).

2. A door latch lock according to claim 1, characterized in that: The rear end of the latch (3) has an upwardly protruding backrest (31), and an insert groove (32) is provided on the front side of the backrest (31). The insert groove (32) is adapted to fit the limiting member (4) and is assembled so that the limiting member (4) abuts against the backrest (31).

3. A door latch lock according to claim 2, characterized in that: The backrest (31) is provided with a through hole (311), which is adapted to the installation and positioning of the elastic element (5). The elastic element (5) is a compression spring. One end of the elastic element (5) is supported on the rear end face of the receiving groove (11), while the other end of the elastic element (5) extends into the through hole (311) and supports the limiting element (4). The corresponding part of the limiting element (4) is provided with a positioning post (43), which extends into the through hole (311) and sleeves the elastic element (5).

4. A door latch lock according to claim 1 or 2, characterized in that: The outer periphery of the latch (3) is provided with a guide groove (33), which is located on the left and right sides of the latch extension direction and extends along the latch extension direction; the guide groove (33) is assembled with the guide rib (14) pre-set on the inner side wall of the receiving groove (11).

5. A door latch lock according to claim 4, characterized in that: The guide groove (33) and the mounting groove (32) are triangularly distributed on the latch (3).

6. A door latch lock according to claim 2, characterized in that: The side shapes of the latch (3) and the limiting member (4) are L-shaped.

7. A door latch lock according to claim 6, characterized in that: The left and right outer walls of the limiting member (4) are also provided with first wing-shaped buckles (44). After the limiting member (4) is installed in the mounting groove (32), it is also connected to the inner wall of the receiving groove (11) by the first wing-shaped buckles (44), so that the limiting member (4) is stably installed in the mounting groove (32) and can follow the movement of the locking tongue (3).

8. A door latch lock according to claim 1, characterized in that: The base (1) is provided with a second wing-shaped buckle (15) on the left and right outer sides so that when the base (1) is installed on the door panel, the second wing-shaped buckle (15) can be used to lock the base off the door panel.

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