Adjustable blind hinge

Abstract

The utility model belongs to the technical field of hinges, and particularly relates to an adjustable blind hinge which comprises a door frame installation piece, first fixing pieces are symmetrically arranged in the door frame installation piece, first movable grooves are formed in the opposite sides of the two first fixing pieces, and the same door frame rotating arm is movably installed between the two first movable grooves. When the whole device is used, a person effectively adjusts the position of the door, so that after the whole device is installed, the distance between the door and the door frame and the distance between the door and the ground are small, the sealing performance between the door and the door frame is high, external sound is not prone to being transmitted into a room, and the situation that the indoor quiet environment is affected is avoided; and meanwhile, the sealing strip on the door frame can be prevented from being extruded when the door is opened and closed, the sealing strip is prevented from being damaged when the door is opened and closed for a long time, and the air tightness, the heat insulation property and the heat preservation property of the door are prevented from being influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hinges, and in particular relates to an adjustable concealed hinge. Background Art

[0002] A hinge is a mechanical device used to connect two solid objects and allow them to rotate relative to each other. A hinge can be made of movable components or foldable materials.

[0003] After the existing hinges are connected to the door frame and the door leaf, there is a certain distance between the door leaf and the ground and the door frame, which will make it easier for external sounds to enter the room, affecting the quiet environment indoors, and will cause the thermal insulation performance to decrease. The heat in the room is easy to dissipate, especially in cold seasons, which will increase the energy consumption for heating. In addition, some hinges will squeeze the sealing strip on the door frame when in use, which will cause the sealing strip to be damaged over a long period of time, affecting the air tightness, heat insulation and thermal insulation of the door. In view of this, we propose an adjustable concealed hinge. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable concealed hinge to solve the problems raised in the above background technology.

[0005] In view of this, the utility model provides an adjustable concealed hinge, comprising:

[0006] A door frame mounting part, wherein a fixing part 1 is symmetrically arranged in the door frame mounting part, a movable groove 1 is provided on opposite sides of the two fixing parts 1, and a same door frame rotating arm is movably installed between the two movable grooves 1, and a connecting part 2 is plugged and installed at the ends of the two fixing parts 1 that are far away from each other and located in the door frame mounting part, a screw hole 2 is provided on the top of the fixing part 1, a screw 2 is installed in the inner thread of the screw hole 2, and the lower end of the screw 2 extends into the connecting part 2;

[0007] A door leaf mounting member, wherein the door leaf mounting member is arranged on one side of the door frame mounting member, and two fixing members are symmetrically arranged in the door leaf mounting member, and two movable grooves are provided on opposite sides of the two fixing members, and the same door leaf rotating arm is movably installed between the two movable grooves, and a connecting member is plugged and installed at one end of the two fixing members that are away from each other and located in the door leaf mounting member, a screw hole is provided on the top of the two fixing members, and a screw is installed with an internal thread of the screw hole, and the lower end of the screw extends into the connecting member, and the concave side of the door leaf rotating arm and the concave side of the door frame rotating arm are both arc-shaped structures.

[0008] In the present technical scheme, during installation, the door frame mounting piece is first fixed in the door frame, and then the door leaf mounting piece is installed on the door, then the door frame rotating arm and the door leaf rotating arm are placed alternately, and the door frame rotating arm and the door leaf rotating arm are rotatably connected under the action of the connecting shaft, then the personnel movably installs one side of the door leaf rotating arm into the two movable grooves 2, and movably installs the other side of the door leaf rotating arm into the two fixing pieces 2, then, movably installs one side of the door frame rotating arm into the two movable grooves 1, and movably installs the other side of the door frame rotating arm into the two fixing pieces 1, at the same time, insert the two ends of one of the connecting rods into the two fixing pieces 1 respectively, and insert the two ends of the other connecting rod into the two fixing pieces 2 respectively, then, the personnel place the two fixing pieces 1 in the door frame mounting piece, and place the two fixing pieces 2 in the door leaf mounting piece;

[0009] Then, the personnel insert the two connecting pieces 2 into the ends of the two fixing pieces 1 that are far away from each other. Then, the distance between the bottom end of the door and the ground can be adjusted up and down through the screw hole 2 and the screw 2 on the fixing piece 1. After adjusting to a suitable position, the fixing piece 1 and the connecting piece 2 are fixed by the screw 2. Then, the connecting piece 2 and the door frame mounting piece can be fixed by a number of bolts. Under the action between the connecting piece 2 and one of the connecting rods, the two fixing pieces 1 can be fixed in the door frame mounting piece to ensure the stability of the two fixing pieces 1.

[0010] Then, the personnel insert the two connecting pieces 1 into the ends of the two fixing pieces 2 that are far away from each other, and then the distance between the door leaf and the door frame can be adjusted through the screw hole 1 and the screw 1 on the fixing piece 2. After adjusting to a suitable position, the fixing piece 2 and the connecting piece 1 are fixed by the screw 1. Then, the connecting piece 1 and the door leaf mounting piece can be fixed by a number of bolts. Under the action of the connecting piece 1 and another connecting rod, the two fixing pieces 2 can be fixed in the door leaf mounting piece to ensure the stability of the two connecting pieces 1. Then, a number of cover plates can be fixed to the corresponding connecting piece 1 and the corresponding connecting piece 2 by bolts;

[0011] Personnel can effectively adjust the position of the door according to the on-site environment during installation, so that after the entire device is installed, the distance between the door and the door frame and the ground is small, the sealing between the door and the door frame is strong, and the outside sound is not easily transmitted into the room, avoiding affecting the quiet environment indoors. The strong sealing can prevent the loss of heat in the room and avoid increasing the energy consumption required for heating.

[0012] In the above technical solution, further, the door frame rotating arm and the door leaf rotating arm are arranged alternately, and the door frame rotating arm and the door leaf rotating arm are rotationally connected via a connecting shaft.

[0013] In this technical solution, it is ensured that the door frame rotating arm and the door leaf rotating arm can rotate normally.

[0014] In the above technical solution, further, the side of the door frame rotating arm away from the fixing member one is located between the two fixing members two, and the side of the door frame rotating arm away from the fixing member one is movably connected to the two fixing members two, and the side of the door leaf rotating arm away from the fixing member two is located between the two fixing members one, and the side of the door leaf rotating arm away from the fixing member two is movably connected to the two fixing members one.

[0015] In this technical solution, it is ensured that the side of the door frame rotating arm away from the fixing member 1 can rotate within the two fixing members 2, and it is ensured that the side of the door leaf rotating arm away from the fixing member 2 can rotate within the two fixing members 1.

[0016] In the above technical solution, further, it also includes:

[0017] Two connecting rods are respectively inserted and installed between the two fixing members 1 and between the two fixing members 2.

[0018] In the technical solution, under the action of the two connecting rods, the two fixing members 1 and the two fixing members 2 can be made more stable.

[0019] In the above technical solution, further, the second connecting member is fixed to the door frame mounting member by a plurality of bolts, and the first connecting member is fixed to the door leaf mounting member by a plurality of bolts.

[0020] In the present technical solution, it is ensured that the second connecting member can be fixed to the door frame mounting member; it is ensured that the first connecting member can be fixed to the door leaf mounting member.

[0021] In the above technical solution, further, the lower end of the screw one is threadedly connected to the connecting piece one, and the lower end of the screw two is threadedly connected to the connecting piece two.

[0022] In the technical solution, under the action of the thread, it is ensured that the lower end of screw one can enter into connector one; under the action of the thread, it is ensured that the lower end of screw two can enter into connector two.

[0023] In the above technical solution, further, a cover plate is installed on the top of the connecting member 1 and the top of the connecting member 2 by bolts.

[0024] In this technical solution, screw one and screw two can be protected by the cover plate.

[0025] The beneficial effects of the utility model are:

[0026] The adjustable concealed hinge, through the cooperation among the door leaf rotating arm, the door frame rotating arm, the fixing part 1, the movable groove 1, the fixing part 2, the movable groove 2, the connecting part 1, the connecting rod, the connecting part 2, the connecting shaft, the screw hole 1, the screw 1, the screw 2 and the screw hole 2, the personnel can effectively adjust the position of the door according to the on-site environment during installation, so that after the installation of the overall device is completed, the distance between the door and the door frame and the ground is small, so that the sealing between the door and the door frame is strong, the sound from the outside is not easily transmitted into the room, so as to avoid affecting the quiet environment in the room, and the strong sealing can prevent the heat loss in the room, so as to avoid increasing the energy consumption required for heating. At the same time, after the installation of the overall device is completed, when the door is opened, the door leaf rotating arm and the door frame rotating arm will rotate, because the concave side of the door leaf rotating arm and the concave side of the door frame rotating arm are both arc-shaped structures with a large arc, so in the process of opening the door, it is possible to avoid squeezing the sealing strip on the door frame, avoid damaging the sealing strip due to long-term opening and closing of the door, and avoid affecting the air tightness, heat insulation and thermal insulation of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is one of the structural schematic diagrams of the explosion of the door leaf mounting member and the door frame mounting member in the utility model;

[0029] Figure 3 This is the second structural schematic diagram of the explosion of the door leaf mounting member and the door frame mounting member in the utility model;

[0030] Figure 4 It is a structural schematic diagram of the door leaf rotating arm and the door frame rotating arm in the utility model;

[0031] Figure 5 It is a schematic diagram of the structure of the door leaf rotating arm and the door frame rotating arm exploded in the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the rotating arm of the middle door leaf of the utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the door frame rotating arm of the utility model;

[0034] Figure 8 This is the third structural schematic diagram of the explosion of the door leaf mounting parts and the door frame mounting parts in the utility model.

[0035] The symbols in the figure are:

[0036] 1. Door leaf mounting part; 2. Door frame mounting part; 3. Door leaf rotating arm; 4. Door frame rotating arm; 5. Fixing part 1; 6. Movable slot 1; 7. Fixing part 2; 8. Movable slot 2; 9. Connecting part 1; 10. Cover plate; 11. Connecting rod; 12. Connecting part 2; 13. Connecting shaft; 14. Screw hole 1; 15. Screw 1; 16. Screw 2; 17. Screw hole 2. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0038] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0040] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0041] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0042] Embodiment 1:

[0043] See also Figure 1 - Figure 8 As shown, this embodiment provides an adjustable concealed hinge, including:

[0044] A door frame mounting part 1, wherein a fixing part 1 5 is symmetrically arranged in the door frame mounting part 1, a movable groove 1 6 is provided on opposite sides of the two fixing parts 1 5, and a same door frame rotating arm 3 is movably installed between the two movable grooves 1 6, a connecting part 2 12 is inserted and installed at the ends of the two fixing parts 1 5 which are far away and located in the door frame mounting part 1, a screw hole 2 17 is provided on the top of the fixing part 1 5, a screw 2 16 is installed in the screw hole 2 17 through a thread, and the lower end of the screw 2 16 extends into the connecting part 2 12;

[0045] A door leaf mounting member 2 is provided on one side of a door frame mounting member 1, and fixing members 7 are symmetrically provided in the door leaf mounting member 2, movable grooves 8 are provided on opposite sides of the two fixing members 7, and a same door leaf rotating arm 4 is movably installed between the two movable grooves 8, and a connecting member 9 is inserted and installed at the ends of the two fixing members 7 that are away from each other and located in the door leaf mounting member 2, a screw hole 14 is provided on the top of the fixing member 7, a screw 15 is threadedly installed in the screw hole 14, and the lower end of the screw 15 extends into the connecting member 9, and the concave side of the door leaf rotating arm 4 and the concave side of the door frame rotating arm 3 are both arc-shaped structures.

[0046] Among them, during installation, first fix the door frame mounting part 1 in the door frame, and then install the door leaf mounting part 2 on the door, then, the door frame rotating arm 3 and the door leaf rotating arm 4 are placed alternately, and under the action of the connecting shaft 13, the door frame rotating arm 3 and the door leaf rotating arm 4 are rotatably connected, then, the personnel movably install one side of the door leaf rotating arm 4 into the two movable grooves 2 8, and movably install the other side of the door leaf rotating arm 4 into the two fixing parts 2 7, then, movably install one side of the door frame rotating arm 3 into the two movable grooves 1 6, and movably install the other side of the door frame rotating arm 3 into the two fixing parts 1 5, at the same time, insert the two ends of one of the connecting rods 11 into the two fixing parts 1 5 respectively, and insert the two ends of the other connecting rod 11 into the two fixing parts 2 7 respectively, then, the personnel place the two fixing parts 1 5 in the door frame mounting part 1, and place the two fixing parts 2 7 in the door leaf mounting part 2;

[0047] Then, the personnel insert the two connecting pieces 12 into the ends of the two fixing pieces 1 5 that are far away from each other. Then, the distance between the bottom end of the door and the ground can be adjusted up and down through the screw holes 17 and the screws 16 on the fixing pieces 1 5. After adjusting to a suitable position, the fixing pieces 1 5 and the connecting piece 12 are fixed by the screws 16. Then, the connecting piece 12 and the door frame mounting piece 1 can be fixed by a number of bolts. Under the action between the connecting piece 12 and one of the connecting rods 11, the two fixing pieces 5 can be fixed in the door frame mounting piece 1 to ensure the stability of the two fixing pieces 5.

[0048] Then, the personnel insert the two connecting pieces 9 into the ends of the two fixing pieces 27 that are far away from each other. Then, the distance between the door leaf and the door frame can be adjusted through the screw holes 14 and screws 15 on the fixing pieces 27. After adjusting to a suitable position, the fixing pieces 27 and the connecting piece 9 are fixed by screws 15. Then, the connecting piece 9 and the door leaf mounting piece 2 can be fixed by several bolts. Under the action of the connecting piece 9 and another connecting rod 11, the two fixing pieces 27 can be fixed in the door leaf mounting piece 2 to ensure that the two After the connection piece 9 is stabilized, several cover plates 10 can be fixed to the corresponding connection piece 9 and the corresponding connection piece 2 12 by bolts. After the overall device is installed, when the door is opened, the door leaf rotating arm 4 and the door frame rotating arm 3 will rotate. Because the concave side of the door leaf rotating arm 4 and the concave side of the door frame rotating arm 3 are both arc-shaped structures with a large arc, the sealing strip on the door frame can be avoided from being squeezed during the door opening process, and the sealing strip can be avoided from being damaged due to long-term opening and closing of the door, so as to prevent the air tightness, heat insulation and thermal insulation of the door from being affected;

[0049] Personnel can effectively adjust the position of the door according to the on-site environment during installation, so that after the entire device is installed, the distance between the door and the door frame and the ground is small, the sealing between the door and the door frame is strong, and the outside sound is not easily transmitted into the room, avoiding affecting the quiet environment indoors. The strong sealing can prevent the loss of heat in the room and avoid increasing the energy consumption required for heating.

[0050] Embodiment 2:

[0051] The present embodiment provides an adjustable concealed hinge, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: the door frame rotating arm 3 and the door leaf rotating arm 4 are staggered, and the door frame rotating arm 3 and the door leaf rotating arm 4 are rotationally connected via a connecting shaft 13.

[0052] The normal rotation between the door frame rotating arm 3 and the door leaf rotating arm 4 is ensured.

[0053] Embodiment 3:

[0054] The present embodiment provides an adjustable concealed hinge, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: the side of the door frame rotating arm 3 away from the fixing member 1 5 is located between the two fixing members 2 7, and the side of the door frame rotating arm 3 away from the fixing member 1 5 is movably connected to the two fixing members 2 7, the side of the door leaf rotating arm 4 away from the fixing member 2 7 is located between the two fixing members 1 5, and the side of the door leaf rotating arm 4 away from the fixing member 2 7 is movably connected to the two fixing members 1 5.

[0055] Among them, it is ensured that the side of the door frame rotating arm 3 away from the fixing piece 1 5 can rotate within the two fixing pieces 2 7 , and it is ensured that the side of the door leaf rotating arm 4 away from the fixing piece 2 7 can rotate within the two fixing pieces 1 5 .

[0056] Embodiment 4:

[0057] This embodiment provides an adjustable concealed hinge, which, in addition to the technical solution of the above embodiment, also has the following technical features, including:

[0058] Two connecting rods 11 are respectively inserted and installed between the two fixing members 1 5 and between the two fixing members 2 7 .

[0059] Among them, under the action of the two connecting rods 11, the two fixing members 1 5 and the two fixing members 2 7 can be made more stable.

[0060] Embodiment 5:

[0061] This embodiment provides an adjustable concealed hinge, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the second connecting member 12 is fixed to the door frame mounting member 1 by a plurality of bolts, and the connecting member 1 9 is fixed to the door leaf mounting member 2 by a plurality of bolts.

[0062] Among them, it is ensured that the second connecting member 12 can be fixed to the door frame mounting member 1; it is ensured that the first connecting member 9 can be fixed to the door leaf mounting member 2.

[0063] Embodiment 6:

[0064] This embodiment provides an adjustable concealed hinge, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the lower end of screw 15 is threadedly connected to connector 1 9 , and the lower end of screw 2 16 is threadedly connected to connector 2 12 .

[0065] Among them, under the action of the thread, it is ensured that the lower end of the screw 15 can enter into the connecting piece 1 9; under the action of the thread, it is ensured that the lower end of the screw 2 16 can enter into the connecting piece 2 12.

[0066] Embodiment 7:

[0067] This embodiment provides an adjustable concealed hinge, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: a cover plate 10 is installed on the top of the connecting member 1 9 and the top of the connecting member 2 12 by bolts.

[0068] The cover plate 10 can protect the screw 15 and the screw 2 16 .

[0069] Working principle: During installation, first fix the door frame mounting part 1 in the door frame, and then install the door leaf mounting part 2 on the door. Then, the door frame rotating arm 3 and the door leaf rotating arm 4 are placed alternately, and the door frame rotating arm 3 and the door leaf rotating arm 4 are rotatably connected under the action of the connecting shaft 13. Then, the personnel movably install one side of the door leaf rotating arm 4 into the two movable grooves 2 8, and movably install the other side of the door leaf rotating arm 4 into the two fixing parts 2 7. Then, one side of the door frame rotating arm 3 is movably installed into the two movable grooves 1 6, and the other side of the door frame rotating arm 3 is movably installed into the two fixing parts 1 5. At the same time, the two ends of one of the connecting rods 11 are respectively inserted into the two fixing parts 1 5, and the two ends of the other connecting rod 11 are respectively inserted into the two fixing parts 2 7. Then, the personnel place the two fixing parts 1 5 in the door frame mounting part 1, and place the two fixing parts 2 7 in the door leaf mounting part 2;

[0070] Then, the personnel insert the two connecting pieces 12 into the ends of the two fixing pieces 1 5 that are far away from each other. Then, the distance between the bottom end of the door and the ground can be adjusted up and down through the screw holes 17 and the screws 16 on the fixing pieces 1 5. After adjusting to a suitable position, the fixing pieces 1 5 and the connecting piece 12 are fixed by the screws 16. Then, the connecting piece 12 and the door frame mounting piece 1 can be fixed by a number of bolts. Under the action between the connecting piece 12 and one of the connecting rods 11, the two fixing pieces 5 can be fixed in the door frame mounting piece 1 to ensure the stability of the two fixing pieces 5.

[0071] Then, the personnel insert the two connecting pieces 9 into the ends of the two fixing pieces 27 that are far away from each other. Then, the distance between the door leaf and the door frame can be adjusted through the screw holes 14 and screws 15 on the fixing pieces 27. After adjusting to a suitable position, the fixing pieces 27 and the connecting piece 9 are fixed by screws 15. Then, the connecting piece 9 and the door leaf mounting piece 2 can be fixed by several bolts. Under the action of the connecting piece 9 and another connecting rod 11, the two fixing pieces 27 can be fixed in the door leaf mounting piece 2 to ensure that the two After the connection piece 9 is stabilized, several cover plates 10 can be fixed to the corresponding connection piece 9 and the corresponding connection piece 2 12 by bolts. After the overall device is installed, when the door is opened, the door leaf rotating arm 4 and the door frame rotating arm 3 will rotate. Because the concave side of the door leaf rotating arm 4 and the concave side of the door frame rotating arm 3 are both arc-shaped structures with a large arc, the sealing strip on the door frame can be avoided from being squeezed during the door opening process, and the sealing strip can be avoided from being damaged due to long-term opening and closing of the door, so as to prevent the air tightness, heat insulation and thermal insulation of the door from being affected;

[0072] Personnel can effectively adjust the position of the door according to the on-site environment during installation, so that after the entire device is installed, the distance between the door and the door frame and the ground is small, the sealing between the door and the door frame is strong, and the outside sound is not easily transmitted into the room, avoiding affecting the quiet environment indoors. The strong sealing can prevent the loss of heat in the room and avoid increasing the energy consumption required for heating.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An adjustable concealed hinge, characterized in that: include: A door frame mounting member (1), wherein a fixing member (5) is symmetrically arranged in the door frame mounting member (1), a movable groove (6) is provided on opposite sides of the two fixing members (5), and a same door frame rotating arm (3) is movably installed between the two movable grooves (6), a connecting member (12) is inserted and installed at the ends of the two fixing members (5) that are away from each other and located in the door frame mounting member (1), a screw hole (17) is provided at the top of the fixing member (5), a screw (16) is threadedly installed in the screw hole (17), and the lower end of the screw (16) extends into the connecting member (12); A door leaf mounting member (2), the door leaf mounting member (2) being arranged on one side of a door frame mounting member (1), a fixing member (7) being symmetrically arranged in the door leaf mounting member (2), a movable groove (8) being provided on opposite sides of the two fixing members (7), and a same door leaf rotating arm (4) being movably installed between the two movable grooves (8), a connecting member (9) being inserted and installed at the ends of the two fixing members (7) which are away from each other and located in the door leaf mounting member (2), a screw hole (14) being provided at the top of the fixing member (7), a screw (15) being threadedly installed in the screw hole (14), and the lower end of the screw (15) extending into the connecting member (9), the concave side of the door leaf rotating arm (4) and the concave side of the door frame rotating arm (3) are both in an arc-shaped structure.

2. The adjustable concealed hinge according to claim 1, characterized in that: The door frame rotating arms (3) and the door leaf rotating arms (4) are arranged in a staggered manner, and the door frame rotating arms (3) and the door leaf rotating arms (4) are rotationally connected via a connecting shaft (13).

3. The adjustable concealed hinge according to claim 1, characterized in that: The side of the door frame rotating arm (3) away from the fixing member 1 (5) is located between the two fixing members 2 (7), and the side of the door frame rotating arm (3) away from the fixing member 1 (5) is movably connected to the two fixing members 2 (7); the side of the door leaf rotating arm (4) away from the fixing member 2 (7) is located between the two fixing members 1 (5), and the side of the door leaf rotating arm (4) away from the fixing member 2 (7) is movably connected to the two fixing members 1 (5).

4. The adjustable concealed hinge according to claim 1, characterized in that: Also includes: Two connecting rods (11), the two connecting rods (11) are respectively inserted and installed between the two fixing members 1 (5) and between the two fixing members 2 (7).

5. The adjustable concealed hinge according to claim 1, characterized in that: The second connecting member (12) is fixed to the door frame mounting member (1) via a plurality of bolts, and the first connecting member (9) is fixed to the door leaf mounting member (2) via a plurality of bolts.

6. The adjustable concealed hinge according to claim 1, characterized in that: The lower end of the screw one (15) is threadedly connected to the connecting piece one (9), and the lower end of the screw two (16) is threadedly connected to the connecting piece two (12).

7. The adjustable concealed hinge according to claim 1, characterized in that: The top of the first connecting member (9) and the top of the second connecting member (12) are both mounted with a cover plate (10) via bolts.

Images