Automatic locking device for double door

Abstract

The utility model relates to the technical field of door locks, and discloses an automatic locking device for a double door, which comprises an automatic lock fixed on a door leaf, a bolt hole and a pull rope, the automatic lock comprises a lock seat and a bolt, one end of the pull rope is fixed at one end of the bolt far away from a bolt head, and the other end of the pull rope is fixed at the other end of the bolt far away from the bolt hole. The automatic lock is fixedly installed at the top end of a door leaf on one side of the double door, the bolt hole is directly formed in the top end of the door frame when the door is opened outwards, a hole seat is fixed to the top end of the side, located indoors, of the door frame when the door is opened inwards, and the bolt hole is formed in the side, facing the bolt, of the hole seat. The automatic lock is fixed at the top end of the door leaf, the bolt on the automatic lock can be automatically inserted into the bolt hole when the door is closed, and the top of the door leaf can be fixed without active locking, so that the safety of the gate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, in particular to an automatic locking device for double doors. Background Art

[0002] The main doors of large residences such as self-built houses and villas in rural areas are generally double-leaf doors. Double-leaf doors require a latch at the top or bottom of at least one of the doors to lock both doors. When locking the door, you need to ensure that the latch in the middle of the two doors is inserted to ensure the door is locked. Otherwise, even if the lock between the two doors is on, it is easy to push the door open. Current double-leaf doors usually use manual latches, which need to be manually pushed in to lock or pulled out to open the door. People often forget to pull the latch when locking the door, which poses a safety hazard to theft.

[0003] In addition, the latches of double-door doors are usually set at the top of the door, which is not friendly to people who are not tall enough, especially for some elderly people in rural areas, where the latches on the door are difficult to use. Summary of the Invention

[0004] The utility model aims to provide an automatic locking device for a double door, so as to solve the problem that the existing double door latch is inconvenient to use.

[0005] The utility model is achieved through the following technical solutions:

[0006] An automatic locking device for a double door comprises an automatic lock fixed on the door leaf, a latch hole and a pull rope, the automatic lock comprises a lock seat and a latch, one end of the pull rope is fixed to the latch at an end away from the latch head, the automatic lock is fixedly installed at the top of the door leaf on one side of the double door, when the door is opened outward, the latch hole is directly opened at the top of the door frame, when the door is opened inward, a hole seat is fixed at the top position of the door frame on the indoor side, and the hole seat is provided with the latch hole on the side facing the latch.

[0007] In one possible design, a bevel is provided on the latch head of the latch. When the door is closed, the bevel is located on the side of the latch head close to the outside of the room. A spring is provided in the lock seat of the automatic lock to provide elastic force for the latch to return.

[0008] In a possible design, the latch hole is in the shape of an elongated strip, with its length direction parallel to the width direction of the door frame.

[0009] In a possible design, a magnetic ring is fixed to the bottom end of the pull rope.

[0010] In a possible design, one end of the pull rope away from the latch is fixed to a door handle on the door leaf, and the door handle and the latch are connected via the pull rope.

[0011] In a possible design, a pull rope fixing hole is provided on the door handle.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] 1. The utility model fixes the automatic lock at the top of the door leaf. When the door is closed, the latch of the automatic lock can be automatically inserted into the latch hole. The top of the door leaf can be fixed without actively locking it, thereby ensuring the safety of the door.

[0014] 2. The utility model has a pull rope fixed on the latch, which can facilitate the user to unlock the latch on the door, making the unlocking operation easier and increasing the convenience of unlocking.

[0015] 3. The utility model includes an automatic lock, a latch hole and a pull rope. The entire device is easy to install and is very suitable for installation on rural gates. The installation operation is simple and no major changes are required to the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when it is applied to an inward-opening door;

[0019] Figure 3 This is a cross-sectional view of the utility model when applied to an inward-opening door;

[0020] Figure 4 For this utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure of the utility model when it is applied to an outward-opening door;

[0022] Figure 6 This is a cross-sectional view of the utility model when applied to an outward-opening door;

[0023] Figure 7 For this utility model Figure 6 Enlarged view of point B in the middle;

[0024] Figure 8 This is a schematic diagram of the structure of the utility model after the magnetic ring is installed.

[0025] The reference numerals represent: 1-automatic lock, 101-lock seat, 102-latch pin, 2-pull rope, 3-hole seat, 4-latch pin hole, 5-magnetic ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0027] Examples, such as Figures 1 to 8 As shown, this embodiment includes an automatic lock 1, a latch hole 4 and a pull rope 2 fixed on the door leaf, the automatic lock 1 includes a lock seat 101 and a latch 102, one end of the pull rope 2 is fixed on the latch 102 at an end away from the head of the latch 102, the automatic lock 1 is fixedly installed at the top of the door leaf on one side of the double door, in the use scenario where the door is opened outward, there is still a door frame on the top of the automatic lock 1, and the latch hole 4 is directly opened at the top of the door frame. In the scenario where the door is opened inward, there is no door frame on the top of the automatic lock 1, and it is necessary to fix the hole seat 3 at the top position of the door frame on the indoor side, and the hole seat 3 is provided with the latch hole 4 on the side facing the latch 102, so that the latch 102 has a hole for insertion to lock the door.

[0028] Advantageously, a bevel is provided on the head of the latch 102. When the door is closed, the bevel is located on the side of the head of the latch 102 closer to the outside of the door. The bevel can retract the latch 102 into the lock seat 101 after abutting against the door frame or the hole seat 3, until the head of the latch 102 is aligned with the latch hole 4 and then the head of the latch 102 pops out of the lock seat 101 and is inserted into the latch hole 4.

[0029] In this embodiment, a spring is provided in the lock seat 101 of the automatic lock 1, which provides elastic force for the latch 102 to return. The spring keeps the interior of the lock seat 101 in a pop-up state at all times, thereby enabling the automatic lock 1 to automatically lock the latch 102 when the door is closed.

[0030] In this embodiment, the latch hole 4 is in an elongated shape, and its length direction is parallel to the width direction of the door frame. During use, the door and the door frame are often deformed due to thermal expansion and contraction, which makes it easy for the latch 102 and the latch hole 4 to be difficult to align. The elongated latch hole 4 increases the area of ​​the latch hole 4, which can effectively reduce the impact of deformation on the latch 102.

[0031] Helpfully, reference Figure 8A magnetic ring 5 is fixed to the bottom end of the pull rope 2. When this embodiment is applied to an iron door, the magnetic iron ring can be adsorbed on the iron door to prevent the pull rope 2 from floating around. For example, when closing the door, after fixing the end of the pull rope 2 by the magnetic ring 5, it can effectively prevent the end of the pull rope 2 from being clamped in the door gap when closing the door. At the same time, one end of the pull rope 2 can also be fixed to the door panel.

[0032] Optionally, the end of the pull rope 2 away from the latch 102 is fixed to the door handle on the door leaf, and the door handle and the latch 102 are connected by the pull rope 2. When the door handle is turned, not only the door lock between the two doors can be opened, but also the latch 102 can be pulled out to unlock the automatic lock 1 above, which makes door opening and closing operations more convenient.

[0033] Based on this, a pull rope fixing hole is further punched on the door handle, and the pull rope 2 is passed through the pull rope fixing hole and then tied to the door handle. This can prevent the pull rope 2 from sliding around along the door handle in the absence of the door handle fixing hole, thereby causing the latch 102 to be unable to be completely pulled out when the door handle is turned, or after being inserted and pulled out, the pull rope 2 pulls the door handle again, making it impossible for the door handle to be rotated to the unlocked state, resulting in the door being unable to be opened.

[0034] Advantageously, the pull cord 2 can be an elastic cord, the elastic margin of which can adjust the balance between the latch 102 and the door handle so that the above situation does not occur between the two. At the same time, after the elastic cord is stretched, the elastic force can pull the latch 102 to unlock it.

[0035] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An automatic locking device for a double door, comprising an automatic lock (1) fixed to the door leaf, a latch hole (4) and a pull rope (2), characterized in that: The automatic lock (1) comprises a lock seat (101) and a latch (102), one end of the pull rope (2) is fixed to the latch (102) at an end away from the head of the latch (102), and the automatic lock (1) is fixedly mounted on the top of one door leaf of a double door; In the use scenario where the door opens outward, the latch hole (4) is directly opened at the top of the door frame. In the use scenario where the door opens inward, a hole seat (3) is fixed at the top position of the door frame on the indoor side, and the hole seat (3) is provided with the latch hole (4) on the side facing the latch (102).

2. The automatic locking device for double doors according to claim 1, characterized in that: The latch (102) has an inclined surface on its head. When the door is closed, the inclined surface is located on the side of the latch (102) head close to the outside of the door. A spring is provided in the lock seat (101) of the automatic lock (1) to provide elastic force for the latch (102) to return.

3. The automatic locking device for double doors according to claim 1, characterized in that: The latch hole (4) is in the shape of an elongated strip, and its length direction is parallel to the width direction of the door frame.

4. The automatic locking device for double doors according to claim 1, characterized in that: A magnetic ring (5) is fixed to the bottom end of the pull rope (2).

5. The automatic locking device for double doors according to claim 1, characterized in that: One end of the pull rope (2) away from the latch (102) is fixed to the door handle on the door leaf, and the door handle and the latch (102) on the door are connected via the pull rope (2).

6. The automatic locking device for double doors according to claim 5, characterized in that: A drawstring fixing hole is provided on the door handle.

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