Connecting device for mounting primary and secondary doors

Abstract

The connecting device comprises a mother door, a frame opening is formed in the mother door, the son door is hinged to the inner wall of the frame opening through a hinge, a groove is formed in the inner wall, close to the hinge, of the frame opening, a spring is fixedly connected to the inner wall of the groove, a sliding plate is fixedly connected to the end, away from the inner wall of the groove, of the spring, and the sliding plate is fixedly connected to the end, away from the inner wall of the groove, of the frame opening. The side wall of the sliding plate is slidably connected with the inner wall of the groove, the side wall, away from the spring, of the sliding plate is fixedly connected with a transverse rod, the end, away from the sliding plate, of the transverse rod is rotationally connected with a connecting rod, and the end, away from the transverse rod, of the connecting rod is rotationally connected with the side wall of the sub-door. When the secondary door is forcibly closed, the connecting rod drives the sliding plate through the cross rod to instantly extrude the spring, elastic potential energy on the spring cannot be instantly released, movement of the sliding plate is hindered, the rotating speed of the secondary door is hindered, and the secondary door is prevented from being quickly closed and colliding with the primary door. And the mounting firmness of the sub-door is improved.

Description

Technical Field

[0001] This utility model relates to the field of door installation technology, and in particular to a connecting device for installing door panels. Background Technology

[0002] A double-leaf door is a special type of double-leaf door, consisting of a narrower door leaf (the child door) and a wider door leaf (the mother door). This type of door is aesthetically pleasing overall.

[0003] Currently, most child doors are installed on the mother door via hinges. Since the mother door is wider, it is only opened when large objects pass through, so the mother door is used less and the child door is used more. Since there is no buffer mechanism after the child door is installed, it is sometimes closed with force, which causes a strong collision between the child door and the mother door. This can easily lead to the child door being unstable and wobbling. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a connecting device for installing mother and child doors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A connecting device for installing a mother door and a child door includes a mother door with a frame opening inside. A child door is hinged to the inner wall of the frame opening via a hinge. A groove is formed on the inner wall of the frame opening near the hinge. A spring is fixedly connected to the inner wall of the groove. A sliding plate is fixedly connected to the end of the spring away from the inner wall of the groove. The side wall of the sliding plate is slidably connected to the inner wall of the groove. A crossbar is fixedly connected to the side wall of the sliding plate away from the spring. A connecting rod is rotatably connected to the end of the crossbar away from the sliding plate. The end of the connecting rod away from the crossbar is rotatably connected to the side wall of the child door. A buffer mechanism for buffering the child door is provided inside the frame opening.

[0007] Preferably, the buffer mechanism includes a vertical plate fixedly connected to the inner wall of the frame opening. The vertical plate is positioned away from the hinge. The vertical plate is made of permanent magnet material. A permanent magnet strip is embedded in the side wall of the sub-door near the vertical plate. The permanent magnet strip repels the vertical plate.

[0008] Preferably, a handle is fixedly connected to the side wall of the sub-door away from the permanent magnet strip.

[0009] Preferably, the spring is made of stainless steel and the spring constant is 30-40 N / m.

[0010] This utility model has the following beneficial effects:

[0011] 1. By setting up a spring, sliding plate, crossbar, and connecting rod, when the sub-door is closed forcefully, the connecting rod will drive the sliding plate through the crossbar to instantly compress the spring. At this time, the elastic potential energy on the spring cannot be released instantly, which can hinder the movement of the sliding plate, thereby hindering the rotation speed of the sub-door. This prevents the sub-door from colliding with the main door when it rotates and closes quickly, thus increasing the installation stability of the sub-door.

[0012] 2. By setting up a vertical plate and a permanent magnet strip, since the vertical plate and the permanent magnet strip repel each other, when the sub-door is closed forcefully, the permanent magnet strip cannot close instantly under the magnetic repulsion of the vertical plate, thus further hindering the rapid closing of the sub-door and further maintaining the sub-door. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a connecting device for installing a mother-daughter door according to the present invention;

[0014] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0015] Figure 3 This is a bottom view of the connecting device for installing a mother-daughter door according to the present invention.

[0016] In the diagram: 1. Main door, 2. Sub-door, 3. Groove, 4. Spring, 5. Slide plate, 6. Horizontal bar, 7. Connecting rod, 8. Vertical plate, 9. Permanent magnet strip, 10. Handle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0019] Reference Figure 1-3A connecting device for installing a mother door and a child door includes a mother door 1 with a frame opening inside the mother door 1. A child door 2 is hinged to the inner wall of the frame opening via a hinge. A groove 3 is provided on the inner wall of the frame opening near the hinge. A spring 4 is fixedly connected to the inner wall of the groove 3. A sliding plate 5 is fixedly connected to the end of the spring 4 away from the inner wall of the groove 3. The side wall of the sliding plate 5 is slidably connected to the inner wall of the groove 3. A crossbar 6 is fixedly connected to the side wall of the sliding plate 5 away from the spring 4. A connecting rod 7 is rotatably connected to the end of the crossbar 6 away from the sliding plate 5. The end of the connecting rod 7 away from the crossbar 6 is rotatably connected to the side wall of the child door 2. A buffer mechanism for buffering the child door 2 is provided inside the frame opening.

[0020] The buffer mechanism includes a vertical plate 8 fixedly connected to the inner wall of the frame opening. The vertical plate 8 is set away from the hinge. The vertical plate 8 is made of permanent magnet material. A permanent magnet strip 9 is embedded in the side wall of the sub-door 2 near the vertical plate 8. The permanent magnet strip 9 repels the vertical plate 8.

[0021] A handle 10 is fixedly connected to the side wall of the sub-door 2 away from the permanent magnet strip 9.

[0022] Spring 4 is made of stainless steel and has a spring constant of 30-40 N / m.

[0023] In this invention, when the sub-door 2 is closed by a large external impact force, the sub-door 2 rotates at a relatively fast speed. This causes the connecting rod 7, which is connected to the side wall of the sub-door 2, to rotate and drive the sliding plate 5 to slide rapidly on the inner wall of the groove 3 via the crossbar 6. This causes the sliding plate 5 to quickly compress the spring 4. However, because the spring 4 is compressed rapidly, its elastic potential energy cannot be released quickly. Consequently, the spring 4 will hinder the sliding of the sliding plate 5, thus hindering the rotation speed of the sub-door 2. This allows the sub-door 2 to rotate slowly, thereby preventing the sub-door 2 from colliding with the main door 1 when it rotates and closes rapidly. At the same time, the permanent magnet strip 9 will also hinder the rotation of the sub-door 2 under the magnetic repulsion of the vertical plate 8, further hindering the rapid closing of the sub-door 2 and maintaining the sub-door 2.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A connecting device for installing a mother door and a daughter door, comprising a mother door (1), characterized in that, The main door (1) has a frame opening, and a sub-door (2) is hinged to the inner wall of the frame opening via a hinge. A groove (3) is provided on the inner wall of the frame opening near the hinge. A spring (4) is fixedly connected to the inner wall of the groove (3). A sliding plate (5) is fixedly connected to the end of the spring (4) away from the inner wall of the groove (3). The side wall of the sliding plate (5) is slidably connected to the inner wall of the groove (3). A crossbar (6) is fixedly connected to the side wall of the sliding plate (5) away from the spring (4). A connecting rod (7) is rotatably connected to the end of the crossbar (6) away from the sliding plate (5). The end of the connecting rod (7) away from the crossbar (6) is rotatably connected to the side wall of the sub-door (2). A buffer mechanism for buffering the sub-door (2) is provided in the frame opening.

2. The connecting device for installing a mother-daughter door according to claim 1, characterized in that, The buffer mechanism includes a vertical plate (8) fixedly connected to the inner wall of the frame opening. The vertical plate (8) is set away from the hinge. The vertical plate (8) is made of permanent magnet material. The side wall of the sub-door (2) near the vertical plate (8) is embedded with a permanent magnet strip (9). The permanent magnet strip (9) repels the vertical plate (8).

3. The connecting device for installing a mother-daughter door according to claim 2, characterized in that, The sub-door (2) has a handle (10) fixedly connected to the side wall away from the permanent magnet strip (9).

4. The connecting device for installing a mother-daughter door according to claim 1, characterized in that, The spring (4) is made of stainless steel and has a spring constant of 30-40 N / m.

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