Linkage type primary and secondary door

Abstract

The utility model discloses a linkage type child-mother door which comprises a door frame, a child door leaf and a mother door leaf, the first side face of the child door leaf is hinged to the door frame through a first hinge, and the first side face of the mother door leaf is hinged to the second side face of the child door leaf through a second hinge. Due to the fact that the child door leaf and the mother door leaf are connected through the second hinge, the child door leaf and the mother door leaf can be opened on the same side, and the size of the thickness of one door leaf is increased.

Description

Technical Field

[0001] This utility model relates to the field of door product technology, and in particular to a linked mother-daughter door. Background Technology

[0002] Currently, most double doors on the market open from both sides. When the door panels are open, both sides occupy some space, resulting in a relatively small passageway for people. This is especially problematic for older buildings with smaller doorways. Furthermore, existing double doors use exposed hinges to connect to the door frame, increasing the risk of hinge damage. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a linkage door between the mother and child doors. Since the child door leaf and the mother door leaf are connected by a second hinge, they can be opened on the same side, thereby increasing the thickness of the door leaf.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A type of interlocking double door includes a door frame, a child door leaf, and a mother door leaf. The first side of the child door leaf is hinged to the door frame via a first hinge, and the first side of the mother door leaf is hinged to the second side of the child door leaf via a second hinge.

[0006] Furthermore, the first hinge includes a first leaf and a first frame, the first leaf being connected to the first frame via a first hinge rod, the first leaf being connected to the first side of the sub-door leaf, and the first frame extending into the door frame and connected to the inner side of the door frame.

[0007] Furthermore, an L-shaped first connecting plate is fixedly installed inside the door frame, and the first frame piece is fixedly connected to the first connecting plate.

[0008] Furthermore, the first sash is connected to the first side of the sub-door leaf by bolts, and the first frame is connected to the first connecting plate by a Losa connector.

[0009] Furthermore, the second hinge includes a second leaf and a second frame. The second leaf is connected to the second frame via a second hinge rod. The second leaf is connected to the first side of the mother door leaf. The second frame extends from the second side of the child door leaf and connects to the inside of the child door leaf.

[0010] Furthermore, an L-shaped second connecting plate is fixedly provided inside the sub-door leaf, and the second frame piece is fixedly connected to the second connecting plate.

[0011] Furthermore, the first side of the mother door is provided with a U-shaped hidden box, and the second hinge rod is disposed inside the hidden box;

[0012] The second side of the sub-door leaf is recessed to form a rectangular groove that fits the hidden box.

[0013] Furthermore, the second side of the mother door is provided with multiple locking points.

[0014] The beneficial effects of this utility model are:

[0015] 1) The child door leaf and the mother door leaf of this utility model are connected by a second hinge, so they can be opened on the same side, thereby increasing the thickness of the door leaf.

[0016] 2) The first frame of the first hinge extends into the door frame, and the second frame of the second hinge extends into the sub-door leaf, realizing the "concealed installation" of the visible hinges. This allows the frame pieces to be hidden inside the door frame / sub-door leaf, ensuring the aesthetics of the product while preventing the hinge frame pieces from being exposed. Attached Figure Description

[0017] Figure 1 This is a top view of the linked mother-daughter door in this embodiment of the present invention when the child door and the mother door are opened simultaneously on the same side.

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle section;

[0019] Figure 3 for Figure 1 Enlarged schematic diagram of part B in the middle

[0020] Figure 4 This is a top view of the interlocking double doors when closed.

[0021] Figure 5 A top view of the main door of a linked double door system when it is open;

[0022] Figure 6 This is a side view of a linked mother-daughter door;

[0023] In the diagram, 1. Door frame; 2. Sub-door leaf; 3. Main door leaf; 4. First hinge; 5. Second hinge; 6. First leaf piece; 7. First frame piece; 8. First hinge rod; 9. Second leaf piece; 10. Second frame piece; 11. Second hinge rod; 12. First connecting plate; 13. Second connecting plate; 14. Hidden box; 15. Locking point. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-6 This utility model provides a technical solution:

[0026] Example:

[0027] like Figures 1-6 As shown, a linkage door includes a door frame 1, a child door leaf 2 and a mother door leaf 3. The first side of the child door leaf 2 is hinged to the door frame 1 via a first hinge 4, and the first side of the mother door leaf 3 is hinged to the second side of the child door leaf 2 via a second hinge 5.

[0028] The second side of the mother door leaf 3 is provided with a lock that is adapted to the door frame 1. The lock is existing technology and will not be described in detail here.

[0029] When in use, the child door leaf 2 and the mother door leaf 3 are connected by the second hinge 5, so they can be opened on the same side, which increases the dimension of the door leaf thickness.

[0030] Among them, the door frame 1 adopts an extremely narrow lace edge, and the width of the wall covering on both sides is relatively small, which can well meet the installation needs of various residential buildings. The door frame 1 at the top adopts a heightening door head process, which increases the overall height of the product.

[0031] Furthermore, such as Figure 1 and Figure 2 As shown, the first hinge 4 includes a first leaf 6 and a first frame 7. The first leaf 6 is connected to the first frame 7 via a first hinge rod 8. The first leaf 6 is connected to the first side of the sub-door leaf 2. The first frame 7 extends into the door frame 1 and is connected to the inner side of the door frame 1.

[0032] An L-shaped first connecting plate 12 is fixedly installed inside the door frame 1, and the first frame piece 7 is fixedly connected to the first connecting plate 12.

[0033] The first leaf 6 is connected to the first side of the sub-door leaf 2 by bolts, and the first frame 7 is connected to the first connecting plate 12 by a Lothar joint.

[0034] like Figure 1 and Figure 3As shown, the second hinge 5 includes a second leaf 9 and a second frame 10. The second leaf 9 is connected to the second frame 10 through a second hinge rod 11. The second leaf 9 is connected to the first side of the mother door leaf 3. The second frame 10 extends from the second side of the child door leaf 2 into the child door leaf 2 and is connected to the inside of the child door leaf 2.

[0035] The sub-door leaf 2 is fixedly provided with an L-shaped second connecting plate 13, and the second frame piece 10 is fixedly connected to the second connecting plate 13.

[0036] The first side of the mother door 3 is provided with a U-shaped hidden box 14, and the second hinge rod 11 is disposed in the hidden box 14;

[0037] The second side of the sub-door 2 is recessed to form a rectangular groove that fits the hidden box 14.

[0038] like Figure 6 As shown, the second side of the main door leaf 3 is provided with multiple locking points 15. The multiple locking points 15 can be configured with auxiliary locking points 15 and top and bottom locks, meeting the number of locking points 15 required for a Class A security door.

[0039] The first frame piece 7 of the first hinge 4 extends into the door frame 1, and the second frame piece 10 of the second hinge 5 extends into the sub-door leaf 2, realizing the "concealed installation" of the visible hinges. This allows the frame pieces to be hidden inside the door frame 1 / sub-door leaf 2, ensuring the aesthetics of the product while preventing the hinge frame pieces from being exposed.

[0040] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A linked parent and child door, characterised in that: The door frame, the sub-door leaf and the parent door leaf, the first side of the sub-door leaf is hinged with the door frame through the first hinge, the first side of the parent door leaf is hinged with the second side of the sub-door leaf through the second hinge; The first hinge comprises a first leaf and a first frame, the first leaf is connected with the first frame through a first hinge rod, the first leaf is connected with the first side of the sub-door leaf, and the first frame is connected with the inner side of the door frame.

2. The linkage for a parent and child door according to claim 1, wherein: The first frame is fixedly connected with an L-shaped first connecting plate arranged in the door frame.

3. The linkage for a jamb door as defined in claim 2, wherein: The first leaf is connected with the first side of the sub-door leaf through a bolt, and the first frame is connected with the first connecting plate through a bolt.

4. The linkage for a jamb door of claim 1, wherein: The second hinge comprises a second leaf and a second frame, the second leaf is connected with the second frame through a second hinge rod, the second leaf is connected with the first side of the parent door leaf, and the second frame is connected with the inner side of the sub-door leaf and extends from the second side of the sub-door leaf into the sub-door leaf.

5. The linkage for a jamb door as defined in claim 4, wherein: The second frame is fixedly connected with an L-shaped second connecting plate arranged in the sub-door leaf.

6. The linkage for a jamb door of claim 5, wherein: The first side of the parent door leaf is provided with a U-shaped hidden box, and the second hinge rod is arranged in the hidden box. The second side of the sub-door leaf is concave to form a rectangular slot matched with the hidden box.

7. The linkage door of claim 6, wherein: The second side of the parent door leaf is provided with a plurality of locking points.

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