Hidden hinge for courtyard door

Abstract

The utility model provides a concealed hinge for a courtyard door. Comprising a connecting frame and a door frame, mounting grooves are formed in the sides, close to each other, of the connecting frame and the door frame, hinge mechanisms are arranged in the mounting grooves, and the connecting frame and the door frame are connected through the hinge mechanisms. Through the arrangement of the mounting groove, the hinge mechanism can be mounted, leakage of the hinge mechanism is avoided, lawbreakers are prevented from prizing or damaging the hinge mechanism difficultly, the safety of the door frame is improved, and due to the fact that the door crack is small, the hinge mechanism in the mounting groove is beneficial to improving the sealing performance of the door frame, the heat preservation performance of a room is improved, and the service life of the door frame is prolonged. And due to the design of the mounting groove, the hinge mechanism occupies a small space when the door frame is opened and closed, and the appearance of the door is kept neat and attractive.

Description

Technical Field

[0001] The utility model belongs to the technical field of hinges, and in particular relates to a concealed hinge for a courtyard door. Background Art

[0002] Patio doors are customized according to the size of the venue. There are no uniform sizes and specifications. During the production or measurement process, small deviations will occur, resulting in gaps from the front view after installation, which is not very beautiful. The exposed hinges also affect the appearance.

[0003] The existing authorization number is CN210067733U, which discloses an adjustable courtyard door hinge assembly, including an upper hinge and a lower hinge, the boss of the lower hinge is inserted into the shaft hole of the upper hinge, the fixing plate of the upper hinge is provided with a screw hole, the side of the lower hinge is provided with a fixing box, and the outer side of the fixing box is fixed with a decorative cover by a hexagon socket screw. The adjustable courtyard door hinge assembly can cover the hinge decoration by setting the hinge decorative cover to improve the aesthetics, and the lower hinge can be adjusted to avoid the size error affecting the installation aesthetics.

[0004] Although the hinge decoration cover is used to cover the hinge decoration of the above-mentioned adjustable courtyard door hinge assembly, the hinge assembly is still in an external state, and criminals can easily pry or damage the hinge, resulting in poor safety. Therefore, it is necessary to provide a new concealed hinge for courtyard doors to solve the above problems. Utility Model Content

[0005] The technical content of the utility model is to provide a new concealed hinge for a courtyard door.

[0006] To solve the above problems, the utility model provides a concealed hinge for a courtyard door, including a connecting frame and a door frame, wherein the connecting frame and the door frame are provided with installation grooves on their mutually adjacent sides, and a hinge mechanism is arranged in the installation groove, and the connecting frame and the door frame are connected by the hinge mechanism.

[0007] As a further solution of the present invention, the connecting frames and door frames are arranged in two groups in opposite directions, and the two groups of connecting frames and door frames are provided with two groups of installation grooves in upper and lower positions, and the installation grooves on the connecting frames and door frames correspond to each other.

[0008] As a further solution of the present invention, the hinge mechanism includes a first mounting plate and a second mounting plate, and the outer dimensions of the first mounting plate and the second mounting plate both match the inner dimensions of the mounting groove.

[0009] As a further solution of the present invention, the first mounting plate and the second mounting plate are respectively connected to the mounting grooves on the connecting frame and the door frame through locking bolts, and threads are distributed on the surface of the locking bolts. The first mounting plate, the second mounting plate and the mounting grooves are all provided with threaded grooves that cooperate with the locking bolts. The locking bolts with threaded structures can provide a more secure locking effect.

[0010] As a further solution of the present invention, four sets of locking bolts are arranged on the first mounting plate and the second mounting plate, and a hexagonal groove is provided on the side where the locking bolts are close to each other. The structure of the hexagonal groove makes it more difficult for the locking bolts to be pried by illegal tools.

[0011] As a further solution of the present invention, the first mounting plate and the second mounting plate are both arranged as U-shaped structures, the inner surfaces of the first mounting plate and the second mounting plate are both hingedly connected to the first connecting plate, and the first connecting plate is arranged in two groups in upper and lower positions, and the two groups of first connecting plates are connected by a connecting rod, and the use of the connecting rod can improve the stability of the first connecting plate.

[0012] As a further solution of the present invention, the inner surface of the second mounting plate is rotatably connected with a second connecting plate, and the second connecting plate is arranged in the middle position of the two groups of first connecting plates.

[0013] As a further solution of the present invention, the upper and lower sides of the second connecting plate are rotatably connected to the two groups of first connecting plates respectively, and the two groups of the first connecting plates and the second connecting plates are both configured as U-shaped structures.

[0014] In summary, the utility model includes at least one of the following beneficial technical effects:

[0015] First, the utility model records a concealed hinge for a courtyard door, which records that by providing an installation groove, the hinge mechanism can be installed to prevent the hinge mechanism from leaking out, making it difficult for lawless elements to pry or damage the hinge mechanism, thereby improving the safety of the door frame. Moreover, since the door gap is small, the hinge mechanism in the installation groove helps to improve the sealing of the door frame, thereby improving the thermal insulation performance of the room. In addition, the design of the installation groove makes it possible for the hinge mechanism to occupy less space when the door frame is opened and closed, thereby keeping the appearance of the door neat and beautiful.

[0016] Second, the utility model records a concealed hinge for a courtyard door, which records that a locking bolt with a threaded structure can provide a more secure locking effect, increase the resistance of the door frame, and make it more difficult to be pried or damaged. The hexagonal groove provides a convenient tool interface, such as a hexagonal wrench, which makes the installation and adjustment of the locking bolt more convenient. The structure of the hexagonal groove makes it more difficult for the locking bolt to be pried by illegal tools, thereby improving the anti-prying performance of the door lock. The locking bolt is installed on the first mounting plate and the second mounting plate, which not only does not affect the appearance of the door frame, but also prevents the locking bolt from shaking violently when the door is closed, thereby increasing the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic structural diagram of a concealed hinge for a courtyard door according to the utility model;

[0019] Figure 2 This is a schematic structural diagram of a concealed hinge for a courtyard door according to the utility model;

[0020] Figure 3 This is a schematic diagram of the distribution structure of the installation grooves of a concealed hinge for a courtyard door according to the utility model;

[0021] Figure 4 The utility model is a concealed hinge for a courtyard door Figure 3 A is an enlarged structural diagram;

[0022] Figure 5 The utility model is a schematic diagram of the hinge mechanism structure of a concealed hinge for a courtyard door.

[0023] Figure numerals: 1, connecting frame; 2, door frame; 3, mounting groove; 4, hinge mechanism; 401, first mounting plate; 402, second mounting plate; 403, locking bolt; 404, first connecting plate; 405, connecting rod; 406, second connecting plate. DETAILED DESCRIPTION

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A concealed hinge for a courtyard door comprises a connecting frame 1 and a door frame 2. The connecting frame 1 and the door frame 2 are both provided with a mounting groove 3 on one side thereof close to each other, and a hinge mechanism 4 is arranged in the mounting groove 3. The connecting frame 1 and the door frame 2 are connected by the hinge mechanism 4.

[0025] The connecting frame 1 and the door frame 2 are both arranged in two groups in opposite directions, and the two groups of connecting frames 1 and door frames 2 are both provided with two groups of mounting grooves 3 in upper and lower positions, and the mounting grooves 3 on the connecting frame 1 and the door frame 2 correspond to each other. The design of the two groups of connecting frames 1 and door frames 2 in opposite directions and the corresponding mounting grooves 3 helps to improve stability;

[0026] The hinge mechanism 4 includes a first mounting plate 401 and a second mounting plate 402. The outer dimensions of the first mounting plate 401 and the second mounting plate 402 match the inner dimensions of the mounting groove 3, which can improve the stability of the first mounting plate 401 and the second mounting plate 402, thereby increasing the resistance of the door frame 2.

[0027] The first mounting plate 401 and the second mounting plate 402 are connected to the connecting frame 1 and the mounting groove 3 on the door frame 2 respectively through the locking bolt 403. The surface of the locking bolt 403 is provided with threads. The first mounting plate 401, the second mounting plate 402 and the mounting groove 3 are all provided with thread grooves that match the locking bolt 403. The structure of the locking bolt 403 and the thread groove increases the firmness of the connection and helps to prevent the door frame 2 from shaking or loosening. The design of the thread groove allows the locking bolt 403 to be easily adjusted and installed by rotation.

[0028] Four sets of locking bolts 403 are disposed on the first mounting plate 401 and the second mounting plate 402, and a hexagonal groove is provided on one side of the locking bolts 403 close to each other. The four sets of locking bolts 403 and the two sets of first connecting plates 404 and the second connecting plate 406 provide multiple connection points, which are helpful to distribute the weight of the door frame 2 and improve the overall stability. The existence of the hexagonal groove can increase the safety of the locking bolts 403 and prevent them from being easily unlocked;

[0029] The first mounting plate 401 and the second mounting plate 402 are both configured as U-shaped structures. The inner surfaces of the first mounting plate 401 and the second mounting plate 402 are both hingedly connected to the first connecting plate 404. The first connecting plate 404 is provided with two groups at upper and lower positions, and the two groups of first connecting plates 404 are connected by a connecting rod 405. The inner surface of the second mounting plate 402 is rotatably connected with a second connecting plate 406. The second connecting plate 406 is provided in the middle position of the two groups of first connecting plates 404. The upper and lower sides of the second connecting plate 406 are rotatably connected to the two groups of first connecting plates 404 respectively. The two groups of first connecting plates 404 and the second connecting plates 406 are both configured as U-shaped structures. The first mounting plate 401 and the second mounting plate 402 of the U-shaped structure can usually provide better structural strength, making the overall structure more solid and durable. The door frame 2 can be opened by pushing the door frame 2 to drive the first connecting plate 404 and the second connecting plate 406 to rotate. The door frame 2 can be closed by rotating the first connecting plate 404 and the second connecting plate 406 and storing the first connecting plate 404 and the second connecting plate 406 into the grooves of the first mounting plate 401 and the second mounting plate 402. The use of the mounting grooves 3 set at the upper and lower positions and the connecting rod 405 helps to balance the weight and distributed force of the door frame 2 and reduce the pressure on the single connection point.

[0030] The working principle of a concealed hinge for a courtyard door provided by the utility model is as follows:

[0031] When in use, the locking bolt 403 is rotated to install the first mounting plate 401 and the second mounting plate 402 in the mounting groove 3. When the door frame 2 is opened or closed, the first connecting plate 404 and the second connecting plate 406 are rotated. The above is the entire working principle of the utility model.

[0032] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A concealed hinge for a courtyard door, comprising: A connecting frame (1) and a door frame (2), characterized in that: a mounting groove (3) is provided on the side where the connecting frame (1) and the door frame (2) are close to each other, and a hinge mechanism (4) is provided in the mounting groove (3); the connecting frame (1) and the door frame (2) are connected via the hinge mechanism (4).

2. The concealed hinge for a courtyard door according to claim 1, characterized in that: The connecting frame (1) and the door frame (2) are both arranged in two groups in opposite directions, and the two groups of connecting frames (1) and the door frame (2) are both provided with two groups of mounting grooves (3) at upper and lower positions, and the mounting grooves (3) on the connecting frame (1) and the door frame (2) correspond to each other.

3. The concealed hinge for a courtyard door according to claim 1, characterized in that: The hinge mechanism (4) comprises a first mounting plate (401) and a second mounting plate (402), and the outer dimensions of the first mounting plate (401) and the second mounting plate (402) both match the inner dimensions of the mounting groove (3).

4. The concealed hinge for a courtyard door according to claim 3, characterized in that: The first mounting plate (401) and the second mounting plate (402) are respectively connected to the connecting frame (1) and the mounting groove (3) on the door frame (2) through a locking bolt (403); threads are distributed on the surface of the locking bolt (403); and the first mounting plate (401), the second mounting plate (402) and the mounting groove (3) are all provided with thread grooves matching the locking bolt (403).

5. The concealed hinge for a courtyard door according to claim 3, characterized in that: Four sets of locking bolts (403) are disposed on the first mounting plate (401) and the second mounting plate (402), and hexagonal grooves are formed on the sides of the locking bolts (403) that are close to each other.

6. The concealed hinge for a courtyard door according to claim 3, characterized in that: The first mounting plate (401) and the second mounting plate (402) are both configured as U-shaped structures, the inner surfaces of the first mounting plate (401) and the second mounting plate (402) are both hingedly connected to the first connecting plate (404), and two groups of first connecting plates (404) are provided in upper and lower positions, and the two groups of first connecting plates (404) are connected via a connecting rod (405).

7. The concealed hinge for a courtyard door according to claim 6, characterized in that: The inner surface of the second mounting plate (402) is rotatably connected to a second connecting plate (406), and the second connecting plate (406) is arranged in the middle position of the two groups of first connecting plates (404).

8. The concealed hinge for a courtyard door according to claim 7, characterized in that: The upper and lower sides of the second connecting plate (406) are rotatably connected to the two groups of first connecting plates (404) respectively, and the two groups of the first connecting plates (404) and the second connecting plates (406) are both configured as U-shaped structures.

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