An automatic hook lock for sliding doors

Abstract

This invention provides an automatic hook lock for sliding doors, comprising a lock body with an embedded movable latch and a fixed hook plate. The lock body has a hook hole on its side strip. The embedded movable latch inside the lock body has a spring-loaded opening and closing design. The hook falls into the embedded movable latch through the hook hole on the side strip of the lock body, and the embedded movable latch automatically engages the hook. This invention uses the cooperation of the embedded latch and the fixed hook to achieve spring-loaded locking, ensuring that both the embedded movable latch and the hook are fully contained within the lock body after locking, thus improving the lock's security and overcoming the poor security caused by the exposed movable hook in traditional hook locks. Outsiders have no opportunity to use tools such as pry bars to open the hook, thus increasing the difficulty of opening the lock by force.

Description

Technical Field

[0001] This utility model belongs to the field of door lock structure, and in particular relates to an automatic hook lock for sliding doors. Background Technology

[0002] In the use of hinged doors, once the door panel is closed, the latch of the door lock automatically inserts into a specific position in the door frame to prevent the door panel from opening, which is quite convenient. Currently, most sliding doors, barn doors, and other sliding door types on the market require manually turning the door handle or using a key to lock the door, increasing the complexity of use and contributing to the lower market acceptance of sliding doors. Existing sliding door locks achieve the locking action by having an upward or downward protrusion on the latch hook onto a locking pawl on the door frame. However, the pawl is mostly rotated and connected to the lock, making it a movable part. An outsider only needs to insert a tool through a small gap in the door to forcibly open the latch, reducing the reliability of the sliding door lock and also compromising the security and privacy of the sliding door during use. Utility Model Content

[0003] In view of this, the present invention aims to propose an automatic hook lock for sliding doors, so that the sliding door can automatically connect with the door frame after closing, preventing the sliding door from opening automatically and improving the convenience of the sliding door and the sliding door lock in use.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An automatic hook lock for sliding doors, including

[0006] A locking plate with a locking tongue extending from it and fixed locking hooks extending outward from the sides of the locking tongue. The fixed locking hooks have an inner side facing the locking tongue.

[0007] The lock body includes a housing with a hook hole, the latch of the latch head can pass through the hook hole and be inserted into the housing, and the housing is provided with an embedded movable latch, which can be close to or away from the hook hole, and when the support post is inserted into the housing, the embedded movable latch can abut against the inner side of the hook to prevent the latch head from separating from the lock body.

[0008] The fixed lock hook has a hook-shaped top surface on the side away from the lock tongue, and the embedded movable lock buckle has a second guide surface on the side facing the lock hook hole. When the lock tongue is inserted into the locking hole, the hook-shaped top surface can contact the second guide surface, so that the embedded movable lock buckle is away from the lock tongue.

[0009] Furthermore, the embedded movable latch is connected to the linkage unit, the linkage unit is provided with a paddle group, and the outer shell is provided with a mechanical lock cylinder lever and / or a handle push rod. The mechanical lock cylinder lever and / or the handle push rod can rotate around one end of itself, and when the mechanical lock cylinder lever and / or the handle push rod rotates, it can move the paddle group to separate the embedded movable latch from the fixed lock hook.

[0010] Furthermore, a torsion spring is provided inside the outer casing. The two torsion arms of the torsion spring abut against the casing and the linkage unit respectively, and the torsion spring is compressed when the embedded movable latch and the fixed locking hook are separated.

[0011] Furthermore, the linkage unit includes a linkage block and a latch lock body. The embedded movable latch is formed by the latch lock body extending outward from the side near the lock hook hole. The latch lock body has a first sliding groove. The outer shell extends inward to form a first guide post. The first guide post is inserted into the first sliding groove, and the latch lock body can move along the length direction of the first sliding groove.

[0012] Furthermore, the paddle assembly includes a handle linkage part, which is formed by extending outward from the side of the latch lock body away from the embedded movable latch. When the handle push rod is rotated, it can drive the handle linkage part to move.

[0013] Furthermore, a latch cavity is provided between the handle linkage and the embedded movable latch, and when the hook inclined top surface is inserted into the hook hole, the fixed hook can be placed in the latch cavity.

[0014] Furthermore, the latch head is also provided with a positioning rod, and the outer shell of the lock body has a positioning hole corresponding to the positioning rod.

[0015] Furthermore, the linkage block has a second sliding groove, and the outer shell is provided with a second guide post, which can be inserted into the second sliding groove.

[0016] Furthermore, the latch lock body is fixed to one end of the linkage block, and the paddle group includes a lock cylinder linkage part, which is located at the other end of the linkage block.

[0017] Furthermore, the linkage block has a clearance part in the middle, the clearance part is U-shaped and its opening faces the lock hook hole, and the handle push rod is placed in the U-shaped clearance part.

[0018] Compared with existing technologies, the automatic hook lock for sliding doors described in this utility model has the following advantages:

[0019] This utility model adopts a method of setting guide surfaces on the fixed lock hook and the embedded movable lock buckle respectively, so that when the lock body is close to the lock head, the embedded movable lock buckle can automatically avoid the fixed lock hook, and after the lock tongue is fully inserted into the lock hook hole, the embedded movable lock buckle hangs on the fixed lock hook, thereby completing the function of automatic locking after the sliding door is closed, improving the convenience of using the sliding door.

[0020] The lock body can be unlocked through multiple means by using a mechanical lock cylinder lever and / or a handle to move the top lever, thereby improving the flexibility of door lock use.

[0021] A torsion spring is used to reset the embedded movable lock, thereby improving the reliability of the embedded movable lock when it engages with the inner side of the hook. Attached Figure Description

[0022] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the lock in this embodiment;

[0024] Figure 2 This is a schematic diagram of the locking hook plate structure;

[0025] Figure 3 This is a schematic diagram of the lock body structure;

[0026] Figure 4 This is a schematic diagram of the linkage unit structure in the lock body;

[0027] Figure 5 This is a schematic diagram of a normally open structure;

[0028] Figure 6 This is a schematic diagram of the internal structure of the lock body that may exist in other embodiments.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Lock body; 11-Outer shell; 111-Lock hook hole; 112-Alignment hole; 113-First guide post; 114-Second guide post; 12-Linkage unit; 121-Claw lock body; 1211-Embedded movable latch; 1212-Handle linkage part; 1213-First slide groove; 122-Linkage block; 122A-First linkage block; 122B-Second linkage block; 1221-Lock cylinder linkage part; 1222-Allowing part; 1223-Second slide groove; 1224-Moving lever 13-Handle push rod; 14-Mechanical lock cylinder lever; 12211-Lock cylinder lever positioning groove; 12212-Lock cylinder lever limiting pin; 12213-Anti-detachment protrusion; 12214-Pulling contact surface; 12215-Rounded corner; 123-Moving lever; 1231-Slot; 16-Torsion spring; 17-Lock hook cavity; 2-Lock hook piece; 21-Lock hook; 22-Fixed lock hook; 221-Hook inner side; 222-Hook sloping top surface; 23-Alignment push rod; 24-Base plate. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] The lock for sliding doors described in this utility model includes a lock body 1 and a lock hook plate 2 that cooperates with the lock body 1. A latch 21 is fixedly mounted on the lock hook plate 2, and a fixed lock hook 22 extends outward from the end of the latch 21. The fixed lock hook 22 has an inner hook surface 221 facing the latch 21 and a hook inclined top surface 222 away from the latch 21. The lock body 1 includes a housing 11, and a lock hook hole 111 is formed on the side of the housing 11 facing the lock hook plate 2, into which the latch 21 can be inserted.

[0036] The outer casing 11 is provided with at least one embedded movable latch 1211 and a linkage unit 12. The linkage unit 12 includes a linkage block 122, and the embedded movable latch 1211 corresponds one-to-one with the linkage block 122. In this embodiment, the embedded movable latch 1211 is formed by extending outward from one side of the latch body 121. The embedded movable latch 1211 is fixed to the linkage block 122 through the latch body 121. The end of the embedded movable latch 1211 can extend into or out of the projection range of the hook hole 111. When the embedded movable latch 1211 extends into the limit position of the projection range of the hook hole 111, the embedded movable latch 1211 can be hooked on the fixed hook 22. Specifically, the embedded movable latch 1211 is positioned on the outer shell 11 near the hook hole 111. When the embedded movable latch 1211 is subjected to an external force, it can move upward, thereby causing the embedded movable latch 1211 to exit the projection range of the hook hole 111. When the embedded movable latch 1211 is not affected by an external force, it can move downward by its own gravity and extend into the projection range of the hook hole 111. In this embodiment, the embedded movable latch 1211 is provided with a second guide surface. The hook inclined top surface 222 can abut against the second guide surface. When the latch 21 is inserted into the hook hole 111, the embedded movable latch 1211 can exit the projection range of the hook hole 111 through the cooperation of the hook inclined top surface 222 and the second guide surface. When the latch 21 is fully inserted into the hook hole 111, the embedded movable latch 1211 falls without the influence of external force, so that the embedded movable latch 1211 is hooked on the fixed hook 22. At this time, the inner side surface 221 of the hook can abut against the embedded movable latch 1211 to prevent the latch 21 from disengaging from the embedded movable latch 1211. Optionally, in other embodiments, a torsion spring 16 may be provided inside the outer casing 11, with a connecting post extending inward from the outer casing 11. The main body of the torsion spring 16 is fitted onto the connecting post, with one torsion arm abutting against the outer casing 11 and the other torsion arm connected to the embedded movable latch 1211. This allows the embedded movable latch 1211 to extend into the range of the lock hook hole 111 without being affected by gravity, thereby improving the reliability of the lock structure. To further improve the reliability of the lock, those skilled in the art can simultaneously use gravity and the torsion spring 16 to control the embedded movable latch 1211. By inserting the latch tongue 21 into the lock hook hole 111 and engaging with the embedded movable latch 1211, all structures exposed on the outside of the lock are rigid. During use, even in environments where external tools can easily penetrate, such as door gaps, it is difficult to damage the rigid structure. Compared to exposing movable hooks and other structures to the outside, this increases the difficulty of opening the lock with external tools, thereby improving the security of the lock and increasing the privacy of the sliding door.

[0037] In this embodiment, the linkage unit 12 is provided with a handle-operated push rod 13 and / or a mechanical lock cylinder push rod 14. Those skilled in the art should know that in other embodiments, it is possible to select whether both control blocks are installed as needed. The linkage unit 12 includes a paddle group. In this embodiment, the paddle group includes a handle linkage part 1212 and a lock cylinder linkage part 1221. The handle linkage part 1212 is formed by extending outward from the side of the latch lock body 121 away from the embedded movable latch 1211. The handle-operated push rod 13 can rotate around one end of itself, and the other end can abut against the handle linkage part 1212 during rotation, and drive the handle linkage part 1212 to move, so that the latch lock body 121 moves, thereby driving the embedded movable latch 1211 out of the projection range of the lock hook hole 111. The lock cylinder linkage part 1221 is formed by extending the linkage block 122 to one side. The mechanical lock cylinder lever 14 is placed inside the outer shell 11 and can rotate around one end. During its rotation, it can abut against the lock cylinder linkage part 1221, thereby driving the linkage block 122 to move, and then driving the embedded movable latch 1211 to exit the projection range of the lock hook hole 111. The mechanical lock cylinder lever 14 is connected to the key insertion module on the lock body 1 so that inserting and rotating the key can drive the mechanical lock cylinder lever 14 to rotate. The specific connection method is existing technology and will not be described in detail here.

[0038] The linkage block 122 is provided with a normally open abutment top, and abutment control block is provided on one side of the normally open abutment top. The abutment control block can rotate around one end of itself. When the abutment control block rotates to its limit position, it can abut against the abutment control block and drive the embedded movable latch 1211 to exit the projection range of the lock hook hole 111 through the linkage block 122. Specifically, the normally open abutment top includes a lock cylinder lever positioning groove 12211 and lock cylinder lever limiting pins 12212 and anti-disengagement protrusions 12213 respectively placed at both ends of the lock cylinder lever positioning groove 12211. When the block moves to its limit position, the edge of the blocking control block can abut against the lock cylinder lever limit pin 12212, thereby preventing the blocking control block from rotating too much and causing it to separate from the lock cylinder lever positioning groove 12211, thus rendering the blocking control block ineffective. The other end of the blocking control block can abut against the anti-disengagement protrusion 12213, thereby preventing the blocking control block from accidentally disengaging from the normally open blocking top when not subjected to external force, thus preventing the door lock from accidentally losing its normally open function. When the blocking control block moves to its limit position, the end face of the blocking control block abuts against the lock cylinder lever positioning groove 12211. The anti-detachment protrusion 12213 and the lock cylinder lever positioning groove 12211 are chamfered with a rounded corner 12215. The anti-detachment protrusion 12213 is provided with a toggle contact surface 12214 on the side away from the lock cylinder lever positioning groove 12211. The end of the abutment piece can be placed between the lock cylinder lever limiting pin 12212 and the anti-detachment protrusion 12213. Furthermore, during the rotation of the abutment control block, the abutment control block first contacts the actuating contact surface 12214 of the anti-detachment protrusion 12213. At this time, the normally open abutment top moves vertically under the influence of the abutment control block, thereby driving the embedded movable latch 1211 to move vertically and gradually move away from the projection range of the lock hook hole 111. When the abutment control block continues to rotate, the end of the abutment control block abuts against the positioning groove 12211 of the lock cylinder lever, thereby preventing the linkage block 122 from resetting under the action of gravity or torsion spring 16, so that the lock body 1 remains in the normally open state, allowing the sliding door to open freely. When the abutment control block separates from the normally open abutment top, the embedded movable latch 1211 extends into the projection range of the lock hook hole 111 under the action of torsion spring 16 or gravity, so that the sliding door closes and locks. In this embodiment, the mechanical lock cylinder lever 14 is the abutment control block, and the normally open abutment block is provided on the lock cylinder linkage part 1221. In other embodiments, the abutment control block can be provided coaxially on the mechanical lock cylinder lever 14 as needed, or the handle push rod 13 can be used as the normally open control block, or the abutment control block can be provided coaxially on the handle push rod 13.

[0039] In this embodiment, there are two embedded movable latches 1211 in the lock, and the two embedded movable latches 1211 are respectively fixedly connected to two linkage blocks 122. The two linkage blocks 122 are respectively provided with linkage parts, and each linkage part is provided with a movable lever pin 1224. A movable lever 123 is placed between the two linkage blocks 122, and the movable lever 123 can rotate around its own center. The two ends of the movable lever 123 are respectively provided with slots 1231, and the movable lever pin 1224 is placed in the slots 1231. When the handle moves the top rod 13 or the mechanical lock cylinder lever 14 and drives one of the linkage blocks 122 to move, the other linkage block 122 moves synchronously through the linkage insertion. In this embodiment, the two linkage blocks 122 drive the two embedded movable latches 1211 to move towards each other or away from each other.

[0040] The outer casing 11 also contains a torsion spring 16. One torsion arm of the torsion spring 16 abuts against the outer casing 11, and the other torsion arm abuts against the linkage block 122 or the embedded movable latch 1211. When the embedded movable latch 1211 exits the projection range of the lock hook hole 111, the torsion spring 16 is compressed by force. More specifically, in this embodiment, the outer casing 11 contains two torsion springs 16, and the two torsion springs 16 are respectively used to reset the two embedded movable latches 1211.

[0041] A latch cavity 17 is provided between the handle linkage part 1212 and the embedded movable latch 1211. When the hook's inclined top surface is inserted into the latch hole 111, the fixed latch 22 can be placed inside the latch cavity 17. Furthermore, one of the linkage blocks 122 has a recess 1222 in the middle, which is U-shaped with its opening facing the latch hole 111. The handle actuating rod 13 is placed inside the U-shaped recess 1222. This allows the rotation axis of the handle control block to be positioned between the two latch lock bodies 121, making the lock structure layout in this embodiment simpler and more direct, and improving the torque transmission efficiency of the door handle. The latch lock body 121 has a first sliding groove 1213, and the outer shell 11 extends inward to form a first guide post 113, which is inserted into the first sliding groove 1213. The linkage block 122 has a second sliding groove 1223, and the outer shell 11 has a second guide post 114, which can be inserted into the second sliding groove 1223. When the linkage block 122 or the latch lock body 121 is subjected to external force, the latch lock body 121 and the linkage block 122 can move along the length direction of the first sliding groove 1213, thereby completing the unlocking operation of the lock body 1.

[0042] The latch head is also provided with a positioning rod 23. The outer shell 11 of the lock body 1 has a positioning hole 112 corresponding to the positioning rod 23. During the installation process, the positioning rod 23 can be engaged with the positioning hole 112 and the latch tongue 21 can be engaged with the hook hole 111 to fix the hook piece 2 and the lock body 1 relatively, so that the installer can position the hook piece 2 on the door frame after installing the lock body 1.

[0043] Combination Figure 1 As shown, in this embodiment, the linkage block 122 is divided into a first linkage block 122A and a second linkage block 122B. The first linkage block 122A is fixedly connected to the upper latch lock body 121, and the second linkage block 122B is fixedly connected to the lower latch lock body 121. Figure 1 As shown in the figure, if it is desired to unlock the lock by rotating the key clockwise, the lock cylinder linkage 1221 can be mounted on the first linkage block 122A. In other possible embodiments, combined with Figure 6 As shown, if you want to unlock the lock by rotating the key counterclockwise, you can set the lock cylinder linkage 1221 on the second linkage block 122B.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic hook lock for a sliding door, characterized by: include A locking plate with a locking tongue extending from it and fixed locking hooks extending outward from the sides of the locking tongue. The fixed locking hooks have an inner side facing the locking tongue. The lock body includes a housing with a hook hole, the latch of the latch head can pass through the hook hole and be inserted into the housing, and the housing is provided with an embedded movable latch, which can be close to or away from the hook hole, and when the support post is inserted into the housing, the embedded movable latch can abut against the inner side of the hook to prevent the latch head from separating from the lock body. The fixed lock hook has a hook-shaped top surface on the side away from the lock tongue, and the embedded movable lock buckle has a second guide surface on the side facing the lock hook hole. When the lock tongue is inserted into the locking hole, the hook-shaped top surface can contact the second guide surface, so that the embedded movable lock buckle is away from the lock tongue.

2. An automatic hook lock for a sliding door according to claim 1, characterized in that: The embedded movable latch is connected to the linkage unit, which is equipped with a paddle group. The housing is equipped with a mechanical lock cylinder lever and / or a handle push rod. The mechanical lock cylinder lever and / or handle push rod can rotate around one end of itself. When the mechanical lock cylinder lever and / or handle push rod rotates, it can move the paddle group to separate the embedded movable latch from the fixed lock hook.

3. An automatic hook lock for a sliding door according to claim 2, characterized in that: The outer casing is also equipped with a torsion spring, the two torsion arms of which abut against the casing and the linkage unit respectively, and the torsion spring is compressed when the embedded movable latch and the fixed locking hook are separated.

4. An automatic hook lock for a sliding door according to claim 2, characterized in that: The linkage unit includes a linkage block and a latch lock body. The embedded movable latch is formed by the latch lock body extending outward from the side near the lock hook hole. The latch lock body has a first sliding groove. The outer shell extends inward to form a first guide post. The first guide post is inserted into the first sliding groove, and the latch lock body can move along the length direction of the first sliding groove.

5. An automatic hook lock for a sliding door according to claim 4, characterized in that: The lever assembly includes a handle linkage part, which is formed by extending outward from the side of the latch lock body away from the embedded movable latch. When the handle is turned, the lever linkage part can be driven to move.

6. An automatic hook lock for a sliding door according to claim 5, characterized in that: A latch cavity is provided between the handle linkage and the embedded movable latch. When the hook's inclined top surface is inserted into the hook hole, the fixed hook can be placed inside the latch cavity.

7. An automatic hook lock for a sliding door according to claim 1, characterized in that: The latch head is also provided with a positioning rod, and the outer shell of the lock body has a positioning hole corresponding to the positioning rod.

8. An automatic hook lock for a sliding door according to claim 5, characterized in that: The linkage block has a second sliding groove, and the outer shell is provided with a second guide post, which can be inserted into the second sliding groove.

9. An automatic hook lock for a sliding door according to claim 5, characterized in that: The latch lock body is fixed to one end of the linkage block, and the paddle group includes a lock cylinder linkage part, which is located at the other end of the linkage block.

10. An automatic hook lock for a sliding door according to claim 8, characterized in that: The linkage block has a clearance part in the middle, the clearance part is U-shaped and its opening faces the lock hook hole, and the handle push rod is placed in the U-shaped clearance part.

Images