Door and window hinge

Abstract

The utility model discloses a door and window hinge which comprises a fixing plate, a first rotating plate rotationally installed on the upper side of the fixing plate, a second rotating plate rotationally installed on the middle section of the first rotating plate, a connecting plate rotationally installed at one end of the first rotating plate, one end of the second rotating plate in sliding connection with the fixing plate, and a third rotating plate rotationally installed at the other end of the second rotating plate. One end of the third rotating plate is rotationally connected with the connecting plate. According to the door and window hinge, through the arrangement of the first rotating plate, the second rotating plate and the third rotating plate, the connecting plate can drive a door and window to rotate by 180 degrees, the door and window is attached to a fixed window, and therefore the problem that indoor space is easily hindered when the door and window are opened and closed by 90 degrees is effectively solved; and the problem that when the door and window are opened and closed by 90 degrees, a child is prone to being hurt by corners is solved, and the smoothness between the door and window and the door and window frame can be improved through the arranged pulley mechanism.

Description

Technical Field

[0001] This utility model relates to the field of door and window installation technology, specifically to a door and window hinge. Background Technology

[0002] A hinge, also known as a latch, is a mechanical device used to connect two solid objects and allow relative rotation between them. Hinges can consist of movable components or be made of foldable materials. Hinges are mainly installed on doors and windows, while hinges are more commonly installed on cabinet furniture. Based on material, they are mainly divided into stainless steel hinges and iron hinges. To provide a better user experience, hydraulic hinges (damping hinges) have emerged. Their characteristic is a buffering function when the cabinet door closes, minimizing the noise generated by the door colliding with the cabinet body.

[0003] Hinges are also divided into surface-mounted hinges and concealed hinges. The preservation of the rubber strip ensures the airtightness of the entire window to a certain extent. In the domestic retail window and door market, concealed hinges are favored by users for their simple appearance and excellent airtightness.

[0004] Existing concealed hinges mostly only allow for a 90-degree opening and closing angle. When doors and windows are designed to open inwards, this limited angle can obstruct the interior space, and the corners can pose a risk of injury to children. Therefore, there is an urgent need to design a new type of door and window hinge to solve these problems. Utility Model Content

[0005] The purpose of this invention is to provide a door and window hinge to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A door and window hinge includes a fixed plate, a first rotating plate rotatably mounted on the upper side of the fixed plate, a second rotating plate rotatably mounted on the middle section of the first rotating plate, a connecting plate rotatably mounted on one end of the first rotating plate, a sliding connection between one end of the second rotating plate and the fixed plate, and a third rotating plate rotatably mounted on the other end of the second rotating plate, a rotatably connected to the connecting plate at one end of the third rotating plate.

[0008] The second rotating plate is located below the first rotating plate, the connecting plate is located above the first rotating plate, the third rotating plate is located below the connecting plate, and the third rotating plate is located above the second rotating plate.

[0009] A limiting groove is provided on the upper side of the fixed plate, and a limiting slider is fixedly installed on the lower side of the second rotating plate. The limiting slider is slidably installed in the limiting groove.

[0010] A bending plate is provided at one end of the fixing plate, and fixing slots are provided on both the fixing plate and the bending plate.

[0011] A fixing cylinder is provided on the upper side of the connecting plate, and a threaded groove is provided on the upper side of the fixing cylinder. A connecting slot is provided on the upper side of the connecting plate.

[0012] A pulley mechanism is provided on the upper side of the fixed plate. The pulley mechanism includes a wheel frame and pulleys. The wheel frame is fixedly installed on the upper side of the fixed plate, and the pulleys are rotatably installed between the wheel frames.

[0013] In the above technical solution, the door and window hinge provided by this utility model has the following beneficial effects:

[0014] (1) The door and window hinge provided by this utility model, through the first rotating plate, the second rotating plate and the third rotating plate, enables the connecting plate to drive the door and window to rotate 180 degrees, so that the door and window fits with the fixed window, thereby effectively solving the problem that opening and closing the door and window at 90 degrees can easily obstruct the indoor space, and avoiding the problem that the corners of the door and window can easily cause injury to children when opening and closing the door and window at 90 degrees.

[0015] (2) The door and window hinge provided by this utility model can improve the smoothness between the door and window and the door and window frame when opening or closing the door and window through the pulley mechanism, thereby greatly improving the practicality of the door and window hinge. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall front view of an embodiment of a door and window hinge according to the present invention.

[0018] Figure 2 This is a schematic diagram of the overall side view structure of an embodiment of a door and window hinge according to the present invention.

[0019] Figure 3 This is a rear view schematic diagram of the limiting slider and fixing plate provided in an embodiment of a door and window hinge according to the present invention.

[0020] 1. Fixed plate; 2. First rotating plate; 3. Second rotating plate; 4. Third rotating plate; 5. Connecting plate; 6. Bending plate; 7. Limiting groove; 8. Limiting slider; 9. Pulley mechanism; 10. Fixed slot; 11. Connecting slot; 12. Fixed cylinder; 13. Threaded groove; 14. Wheel frame; 15. Pulley. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown in the figure, a door and window hinge provided by this utility model embodiment includes a fixed plate 1, a first rotating plate 2 rotatably mounted on the upper side of the fixed plate 1, a second rotating plate 3 rotatably mounted on the middle section of the first rotating plate 2, a connecting plate 5 rotatably mounted on one end of the first rotating plate 2, a sliding connection between one end of the second rotating plate 3 and the fixed plate 1, and a third rotating plate 4 rotatably mounted on the other end of the second rotating plate 3. One end of the third rotating plate 4 is rotatably connected to the connecting plate 5. The second rotating plate 3 is located below the first rotating plate 2, the connecting plate 5 is located above the first rotating plate 2, the third rotating plate 4 is located below the connecting plate 5, and the third rotating plate 4 is located above the second rotating plate 3. A limiting groove 7 is formed on the upper side of the fixed plate 1, and a limiting slider 8 is fixedly mounted on the lower side of the second rotating plate 3. The limiting slider 8 is slidably mounted in the limiting groove 7.

[0023] Specifically, in this embodiment, during use, rotating the door and window causes the connecting plate 5 to rotate. The rotation of the connecting plate 5 causes the third rotating plate 4, the second rotating plate 3, and the first rotating plate 2 to rotate simultaneously. One end of the second rotating plate 3 can slide along the limiting groove 7 via the limiting slider 8. When the third rotating plate 4 and the second rotating plate 3 rotate to a horizontally extended state, the sliding end of the second rotating plate 3 and the fixed plate 1 slides towards the first rotating plate 2, causing the first rotating plate 2 to rotate towards the third rotating plate 4. When the end of the second rotating plate 3 near the third rotating plate 4 overlaps with the end of the first rotating plate 2 near the third rotating plate 4, the rotation of one end of the third rotating plate 4 towards the fixed plate 1 causes the connecting plate 5 to drive the door and window to be parallel to the fixed plate 1, allowing the door and window to rotate 180 degrees. This effectively solves the problem that opening and closing the door and window 90 degrees can easily obstruct the indoor space, and avoids the problem that the corners of the door and window can easily cause injury to children when opening and closing the door and window 90 degrees.

[0024] The present invention provides a door and window hinge, wherein a bending plate 6 is provided at one end of a fixing plate 1, and fixing slots 10 are provided on both the fixing plate 1 and the bending plate 6; a fixing cylinder 12 is provided on the upper side of a connecting plate 5, and a threaded slot 13 is provided on the upper side of the fixing cylinder 12; and a connecting slot 11 is provided on the upper side of the connecting plate 5.

[0025] In another embodiment of this utility model, by placing the fixing plate 1 at the corner of the door and window frame, and threading multiple screws through the fixing slots 10 on the fixing plate 1 and the bending plate 6 to the door and window frame, the fixing plate 1 is fixedly installed on the door and window. Then, the fixing cylinder 12 and the connecting plate 5 are aligned with the corner of the door and window, and multiple screws are threaded through the connecting slots 11 on the connecting plate 5 to the door and window. The fixing cylinder 12 corresponds to the pre-reserved protruding plate on one side of the door and window. Then, the screws are threaded through the protruding plate and threaded through the threaded slots 13 on the fixing cylinder 12 to complete the installation and fixing of the door and window.

[0026] The present invention provides a door and window hinge, wherein a pulley mechanism 9 is provided on the upper side of the fixed plate 1. The pulley mechanism 9 includes a wheel frame 14 and a pulley 15. The wheel frame 14 is fixedly installed on the upper side of the fixed plate 1, and the pulley 15 is rotatably installed between the wheel frames 14.

[0027] In another embodiment of this utility model, when opening or closing doors and windows, the pulley 15 can reduce the friction between the doors and windows and the door and window frame, thereby improving the smoothness of opening or closing between the high doors and windows and the door and window frame.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A door and window hinge, characterized in that, The system includes a fixed plate (1), on which a first rotating plate (2) is rotatably mounted. A second rotating plate (3) is rotatably mounted in the middle section of the first rotating plate (2). A connecting plate (5) is rotatably mounted at one end of the first rotating plate (2). One end of the second rotating plate (3) is slidably connected to the fixed plate (1). A third rotating plate (4) is rotatably mounted at the other end of the second rotating plate (3). One end of the third rotating plate (4) is rotatably connected to the connecting plate (5).

2. A door and window hinge according to claim 1, characterized in that, The second rotating plate (3) is located below the first rotating plate (2), the connecting plate (5) is located above the first rotating plate (2), the third rotating plate (4) is located below the connecting plate (5), and the third rotating plate (4) is located above the second rotating plate (3).

3. A door and window hinge according to claim 2, characterized in that, A limiting groove (7) is provided on the upper side of the fixed plate (1), and a limiting slider (8) is fixedly installed on the lower side of the second rotating plate (3). The limiting slider (8) is slidably installed in the limiting groove (7).

4. A door and window hinge according to claim 2, characterized in that, The fixing plate (1) has a bending plate (6) at one end, and both the fixing plate (1) and the bending plate (6) have fixing slots (10).

5. A door and window hinge according to claim 3, characterized in that, A fixing cylinder (12) is provided on the upper side of the connecting plate (5), a threaded groove (13) is provided on the upper side of the fixing cylinder (12), and a connecting slot (11) is provided on the upper side of the connecting plate (5).

6. A door and window hinge according to claim 4, characterized in that, A pulley mechanism (9) is provided on the upper side of the fixed plate (1). The pulley mechanism (9) includes a wheel frame (14) and a pulley (15). The wheel frame (14) is fixedly installed on the upper side of the fixed plate (1), and the pulley (15) is rotatably installed between the wheel frames (14).

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