Hidden door hinge

Abstract

The utility model provides a hidden door hinge, which relates to the technical field of door hinges and comprises a shell, a first support, an adjusting block and a first hinge, the first hinge is rotatably mounted on the first support and used for being connected with a door frame, the shell is U-shaped, the adjusting block is adjustably mounted in a U-shaped cavity of the shell, the first support is fixedly mounted on the adjusting block, and the second support is fixedly mounted on the adjusting block. In order to install the shell in the middle of the door leaf, a containing cavity is formed in the first support, two sets of connecting shafts are arranged between the first support and the first hinge, in one set of connecting shafts, one connecting shaft is connected with the first support, the other connecting shaft is connected with the first hinge, and the two sets of connecting shafts are arranged in a staggered mode. The connecting part of the first hinge can be shrunk into the containing cavity, so that under the condition that the door leaf is wide, due to the fact that the two sets of connecting shafts are arranged in a staggered mode, a large installation range can be provided, and the trouble of people in the installation process is reduced.

Description

Technical Field

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

[0002] The opening edge distance of the existing 3D concealed hinge is generally small, resulting in that the thicker door leaf cannot be centered for opening holes. The door leaf hinges need to be divided into left-opening doors and right-opening doors, so that people are prone to make mistakes when customizing doors. Content of the Utility Model

[0003] The purpose of the utility model is to provide a concealed door hinge to solve the technical problem that in the prior art, when installing a 3D concealed hinge, due to the relatively large thickness of the door leaf, the installation of the door leaf needs to be divided into left-opening doors and right-opening doors. The preferred technical solutions provided by the utility model can produce many technical effects, which will be elaborated below.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A concealed door hinge provided by the utility model includes a housing, a first bracket, an adjusting block, and a first hinge. The first hinge is rotatably installed on the first bracket and directly installed on the door frame. The housing is installed at the middle position of the door leaf along the width direction, and the housing is set in a U shape. The adjusting block is adjustably installed in the U-shaped cavity of the housing. The first bracket is fixedly installed on the adjusting block. A receiving cavity is provided on the first bracket. Two groups of connecting shafts are provided between the first bracket and the first hinge. In one group of the connecting shafts, one is connected to the first bracket and the other is connected to the first hinge, and the two groups of connecting shafts are arranged in a staggered manner so that the connecting part of the first hinge can be contracted into the receiving cavity.

[0006] Preferably, a first waist-shaped hole is provided on the adjusting block, and a first fixing hole is provided on the housing. A fourth fastener is simultaneously inserted into the first waist-shaped hole and the first fixing hole. The length direction of the first waist-shaped hole is the same as the length direction of the housing to adjust the height of the adjusting block in the housing.

[0007] Preferably, a first threaded hole is provided on the first bracket, and a second threaded hole is provided on the adjusting block. A first fastener is simultaneously inserted into the first threaded hole and the second threaded hole, and the first fastener can abut against the housing to adjust the adjusting block to be close to or far from the housing.

[0008] Preferably, a friction part is provided between the adjusting block and the housing.

[0009] Preferably, a first mounting position is provided on the housing, and a second fastener is installed on the door leaf through the first mounting position.

[0010] Preferably, a first protection plate is provided on the end face of the housing where the first mounting position is installed. The length of the first protection plate is greater than the length of the end face of the housing, so that the first protection plate protrudes from the end face of the housing.

[0011] Preferably, a second mounting hole is provided on the first hinge, and a third fastener is installed on the door frame through the second mounting hole.

[0012] Preferably, a second groove and a second protection plate are provided on the first hinge. A first groove is provided on the side of the second groove. The depth of the first groove is greater than the depth of the second groove. The second protection plate is installed in the second groove, and part of the second protection plate is arranged above the first groove.

[0013] Preferably, a magnetic attraction assembly is provided between the second protection plate and the first hinge.

[0014] Preferably, the second mounting hole includes a second waist-shaped hole, and the length direction of the second waist-shaped hole is the same as the width direction of the first hinge.

[0015] The technical solutions provided in this application document have the following beneficial effects:

[0016] The utility model provides a concealed door hinge, which includes a housing, a first bracket, an adjusting block, and a first hinge. The first hinge is rotatably installed on the first bracket and is used to connect with the door frame. Among them, the housing is installed at the middle position of the door leaf along the width direction, reducing the trouble of people setting left-opening or right-opening doors. The housing is set to be U-shaped. The adjusting block is adjustably installed in the U-shaped cavity of the housing, and the first bracket is fixedly installed on the adjusting block. In order to be able to install the housing at the middle position of the door leaf, a receiving cavity is provided on the first bracket. There are two groups of connecting shafts between the first bracket and the first hinge. In one group of connecting shafts, one is connected to the first bracket and the other is connected to the first hinge, and the two groups of connecting shafts are arranged in a staggered manner. In this way, when the door leaf is opened, the connecting part of the first hinge can be retracted into the receiving cavity. With such a setting, when the door leaf is relatively wide, due to the setting of two groups of connecting shafts and the two groups of connecting shafts being arranged in a staggered manner, a relatively large installation range can be given, reducing the trouble of people during installation. At the same time, since the adjusting block is adjustably installed on the housing, it is convenient for people to adjust the position of the door leaf. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of a concealed door hinge shown according to an exemplary embodiment;

[0019] Figure 2 is a schematic structural diagram of the concealed door hinge with the first protection plate and the second protection plate removed shown according to an exemplary embodiment;

[0020] Figure 3 is a schematic structural diagram of a hinge shown according to an exemplary embodiment;

[0021] Figure 4 is a schematic structural diagram of a housing shown according to an exemplary embodiment;

[0022] Figure 5 is a schematic structural diagram of the housing installed with an adjustment block and a first bracket shown according to an exemplary embodiment;

[0023] Figure 6 is a schematic structural diagram of an adjustment block shown according to an exemplary embodiment;

[0024] Figure 7 is a schematic structural diagram of a first bracket shown according to an exemplary embodiment.

[0025] In the figure: 1. Housing; 11. First fixing hole; 12. First installation position; 13. First protection plate; 2. First bracket; 21. First fastener; 22. Accommodation cavity; 23. First threaded hole; 3. Adjustment block; 31. First waist-shaped hole; 32. Second threaded hole; 33. Fourth fastener; 4. First hinge; 41. Second installation hole; 42. Second protection plate; 43. Second groove; 44. First groove; 45. Second waist-shaped hole; 5. Connecting shaft; 6. Friction part. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present invention clearer, the following will describe the technical solutions of the present invention in detail. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope protected by the present invention.

[0027] This specific embodiment provides a concealed door hinge, which solves the technical problem in the prior art that when installing a 3D concealed hinge, due to the relatively large thickness of the door leaf, the installation of the door leaf requires distinguishing between left-opening doors and right-opening doors.

[0028] Hereinafter, the embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not impose any limitation on the utility model content recited in the claims. Further, all the contents of the configurations shown in the following embodiments are not necessarily essential for the solution of the utility model recited in the claims.

[0029] Referring to Figures 1-7 , the present utility model provides a concealed door hinge, including a housing 1, a first bracket 2, an adjustment block 3, and a first hinge 4. The first hinge 4 is rotatably installed on the first bracket 2 and is used to connect to the door frame. Among them, the housing 1 is installed at the middle position of the door leaf in the width direction, reducing the trouble for people to set left-opening or right-opening doors. The housing 1 is set to be U-shaped. The adjustment block 3 is adjustably installed in the U-shaped cavity of the housing 1. The first bracket 2 is fixedly installed on the adjustment block 3. In order to be able to install the housing 1 at the middle position of the door leaf, a receiving cavity 22 is provided on the first bracket 2. There are two groups of connecting shafts 5 between the first bracket 2 and the first hinge 4. In one group of connecting shafts 5, one is connected to the first bracket 2 and the other is connected to the first hinge 4, and the two groups of connecting shafts 5 are arranged in a staggered manner. In this way, when the door leaf is opened, the connecting part of the first hinge 4 can be contracted into the receiving cavity 22. With such a setting, in the case of a relatively wide door leaf, due to the setting of two groups of connecting shafts and the two groups of connecting shafts being arranged in a staggered manner, a relatively large installation range can be provided, reducing the trouble for people during installation. At the same time, since the adjustment block 3 is adjustably installed on the housing 1, it is convenient for people to adjust the position of the door leaf.

[0030] As a further optimized solution, the adjustment block 3 has a first waist-shaped hole 31. A first fixing hole 11 is provided on the housing 1. The length direction of the first waist-shaped hole 31 is the same as the length direction of the housing 1. A fourth fastener 33 is installed in the first waist-shaped hole 31 and the first fixing hole 11 to adjust the height of the adjustment block 3 on the housing 1. Since the housing 1 is fixed on the door leaf, among them, a first installation position 12 is provided on the housing 1. The second fastener passes through the first installation hole 12 and is installed on the door. From Figure 2 and 6 it can be seen that the first installation position is provided with a round through hole. After the second fastener is installed in the first installation hole 12, the housing 1 cannot move. In order to facilitate the adjustment of the position of the first bracket 2, a first waist-shaped hole 31 is provided on the adjustment block 3. Thus, the position of the fourth fastener 33 in the first waist-shaped hole 31 is adjusted, and then the height of the adjustment block 3 is adjusted.

[0031] For a further optimized solution, to facilitate the fixation of the first bracket 2, a first threaded hole 23 is provided on the first bracket 2, and a second threaded hole 32 is provided on the adjusting block 3. The first fastener 21 is simultaneously inserted into the first threaded hole 23 and the second threaded hole 32, and the first fastener 21 can abut against the housing 1 to adjust the adjusting block 3 to be closer to or farther from the door leaf. When people adjust the first fastener 21, since the first fastener 21 abuts against the bottom of the U-shaped cavity of the housing 1, the portion of the first fastener 21 that exceeds the thickness of the adjusting block 3 can adjust the distance between the adjusting block 3 and the housing 1, thereby facilitating the adjustment of the position of the door leaf. That is, when the first fastener 21 is screwed into the housing 1 by one thread pitch, the adjusting block 3 moves away from the housing 1 by the corresponding thread pitch.

[0032] For a further optimized solution, to ensure stable connection between the adjusting block 3 and the housing 1, a friction portion 6 is provided between the adjusting block 3 and the housing 1. Among them, a first serrated portion is provided on the housing 1, and a second serrated portion is provided on the surface of the adjusting block 3 that contacts the bottom of the housing 1. The first serrated portion can be engaged with the second serrated portion to prevent the adjusting block 3 from moving relative to the housing 1 under the action of the gravity of the door leaf.

[0033] For a further optimized solution, to ensure aesthetics, a first protection plate 13 is provided on the end surface of the housing 1 where the first mounting position 12 is installed. The first protection plate 13 and the housing 1 can be connected by a magnetic attraction structure. In this way, it is convenient for people to install and disassemble. To facilitate the removal of the first protection plate 13 from the housing 1, the length of the first protection plate 13 is greater than the length of the end surface of the housing 1, so that the first protection plate 13 protrudes from the end surface of the housing 1. By pressing one end of the first protection plate 13, one end of the first protection plate 13 can be lifted, facilitating people to remove the first protection plate 13.

[0034] For a further optimized solution, to facilitate the fixation of the first hinge 4, a second mounting hole 41 is provided on the first hinge 4, and a third fastener is installed on the door frame through the second mounting hole 41. Among them, the second mounting hole includes a second waist-shaped hole 45, and the length direction of the second waist-shaped hole 45 is the same as the width direction of the first hinge 4. In this way, the position of the first hinge 4 can be adjusted horizontally, thereby ensuring the normal opening of the door leaf.

[0035] In addition, when people install, there is no need to open an installation groove on the door frame. They can directly drill holes and install at the corresponding positions. At the same time, during on-site installation, if the size of the door and the wall hole does not match, people only need to adjust the position of the third fastener in the second waist-shaped hole 45, which is convenient for people to adjust.

[0036] For a further optimized solution, to ensure aesthetics, a second groove 43 and a second protection plate 42 are provided on the first hinge 4. A first groove 44 is provided on the side of the second groove 43, and the depth of the first groove 44 is greater than that of the second groove 43. The second protection plate 42 is installed in the second groove 43, and a part of the second protection plate 42 is arranged above the first groove 44. When people open it, by pressing the second protection plate 42 above the position of the first groove 44, the second protection plate 42 can be lifted up, which is convenient for lifting up the second protection plate 42.

[0037] For a further optimized solution, to facilitate the buckling of the second protection plate 42 with the first hinge 4, a magnetic attraction component is provided between the second protection plate 42 and the first hinge 4, which is convenient for the installation and disassembly of the second protection plate 42.

[0038] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicated in this article refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of this article, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

[0041] It can be understood that the same or similar parts in the above embodiments can be referred to each other. For the content not detailed in some embodiments, reference can be made to the same or similar content in other embodiments. The multiple solutions provided by this application include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve the co-realization of multiple effects.

[0042] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A concealed door hinge, characterized in that: The invention comprises a shell (1), a first bracket (2), an adjustment block (3), and a first hinge (4); the first hinge (4) is rotatably mounted on the first bracket (2) and directly mounted on the door frame; the shell (1) is mounted at the middle position of the door leaf along the width direction, and the shell (1) is arranged in a U-shape; the adjustment block (3) is adjustably mounted in the U-shaped cavity of the shell (1); the first bracket (2) is fixedly mounted on the adjustment block (3); a receiving cavity (22) is arranged on the first bracket (2); two groups of connecting shafts (5) are arranged between the first bracket (2) and the first hinge (4); in one group of the connecting shafts (5), one is connected to the first bracket (2) and the other is connected to the first hinge (4); and the two groups of the connecting shafts (5) are staggered so that the connecting portion of the first hinge (4) can be retracted into the receiving cavity (22).

2. The concealed door hinge according to claim 1, characterized in that: The adjusting block (3) is provided with a first waist-shaped hole (31), the shell (1) is provided with a first fixing hole (11), a fourth fastener (33) is simultaneously inserted into the first waist-shaped hole (31) and the first fixing hole (11), the length direction of the first waist-shaped hole (31) being the same as the length direction of the shell (1), so as to adjust the height of the adjusting block (3) on the shell (1).

3. The concealed door hinge according to claim 1, characterized in that: The first bracket (2) is provided with a first threaded hole (23), the adjustment block (3) is provided with a second threaded hole (32), the first fastener (21) is simultaneously inserted into the first threaded hole (23) and the second threaded hole (32), and the first fastener (21) can abut against the shell (1) to adjust the adjustment block (3) to move closer to or farther from the shell (1).

4. The concealed door hinge according to claim 1, characterized in that: A friction portion (6) is provided between the adjustment block (3) and the housing (1).

5. The concealed door hinge according to claim 1, characterized in that: A first mounting position (12) is provided on the shell (1), and a second fastener passes through the first mounting position (12) and is mounted on the door leaf.

6. The concealed door hinge according to claim 5, characterized in that: A first protective plate (13) is provided on the end surface of the shell (1) mounted at the first mounting position (12); the length of the first protective plate (13) is greater than the length of the end surface of the shell (1), so that the first protective plate (13) protrudes from the end surface of the shell (1).

7. The concealed door hinge according to claim 1, characterized in that: The first hinge (4) is provided with a second mounting hole (41), and the third fastener passes through the second mounting hole (41) and is mounted on the door frame.

8. The concealed door hinge according to claim 1, characterized in that: A second groove (43) and a second protective plate (42) are arranged on the first hinge (4); a first groove (44) is arranged on the side of the second groove (43); the depth of the first groove (44) is greater than the depth of the second groove (43); the second protective plate (42) is installed in the second groove (43), and a part of the second protective plate (42) is arranged above the first groove (44).

9. The concealed door hinge according to claim 8, characterized in that: A magnetic attraction component is provided between the second protection plate (42) and the first hinge (4).

10. The concealed door hinge according to claim 7, characterized in that: The second mounting hole comprises a second waist-shaped hole (45), and the length direction of the second waist-shaped hole (45) is the same as the width direction of the first hinge (4).

Images