Double-swing-arm ultrathin hidden hinge

Abstract

The utility model discloses a double swing arm ultrathin hidden hinge, which relates to the technical field of hinges, and comprises a first hinge connected on a door plate, a second hinge connected on a door frame and a swing arm mechanism connected between the first hinge and the second hinge, the first hinge and the second hinge are respectively provided with an accommodating groove for accommodating the swing arm mechanism, and the accommodating grooves are connected with the swing arm mechanism. A first connecting piece and a second connecting piece are respectively arranged on the two accommodating grooves; the swing arm mechanism comprises a first sub-swing arm and a second sub-swing arm, one end of the first sub-swing arm is hinged to the first connecting piece, and the other end of the first sub-swing arm is hinged to the second connecting piece; one end of the second sub-swing arm is hinged with the first connecting piece, and the other end of the second sub-swing arm is hinged with the second connecting piece; the first sub-swing arm and the second sub-swing arm are straight swing arms; the double-swing-arm ultrathin hidden hinge is high in supporting strength.

Description

Technical Field

[0001] This utility model belongs to the field of hinge technology, specifically relating to a double swing arm ultrathin concealed hinge. Background Technology

[0002] Door hinges are used for the movable connection between a door panel and a door frame, allowing the door to open or close. A concealed hinge, also known as a hidden hinge, is a type of door hinge. A concealed hinge consists of two hinges and a connecting rod that movably connects them. The two hinges of the concealed hinge are installed inside through holes provided in the door panel and / or door frame. When the door is closed, the connecting rod of the concealed hinge also retracts completely into the through hole, and the entire door hinge is hidden, with no exposed parts, improving aesthetics. At the same time, no part of the concealed hinge can be accessed from the outside of the door, improving security.

[0003] Chinese utility model patent CN221169137U discloses a hinge comprising a first hinge mounted on a door panel and a second hinge mounted on a door frame. At least one of the first and second hinges has a storage groove. Two connecting rods are provided between the first and second hinges. Each connecting rod consists of a first connecting rod block and a second connecting rod block hinged together. The first connecting rod block is movably connected to the first hinge, and the second connecting rod block is movably connected to the second hinge. The two connecting rods are connected in series by a connecting shaft located at the hinge position of the first and second connecting rod blocks. When the first and second hinges are closed, the two connecting rods are stored in the storage groove. This embodiment of the double-link adjustable concealed hinge uses two connecting rods to connect the first and second hinges respectively, and the two connecting rods are connected by a connecting shaft, ensuring consistent operation and improving the strength of the connecting rods to withstand heavier door panels. However, in this patent, the two connecting rods are on the same plane, resulting in insufficient support strength. Utility Model Content

[0004] The purpose of this invention is to provide a double-swing arm ultra-thin concealed hinge to solve the problem of insufficient support strength of concealed hinges in the prior art.

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

[0006] A double-swing-arm ultra-thin concealed hinge includes a first hinge connected to a door panel, a second hinge connected to a door frame, and a swing-arm mechanism connected between the first and second hinges. Both the first and second hinges are provided with receiving grooves to accommodate the swing-arm mechanism, and a first connector and a second connector are respectively provided in the two receiving grooves. The swing-arm mechanism includes a first sub-swing arm and a second sub-swing arm. One end of the first sub-swing arm is hinged to the first connector, and the other end is hinged to the second connector. One end of the second sub-swing arm is hinged to the first connector, and the other end is hinged to the second connector. Both the first and second sub-swing arms are straight swing arms.

[0007] Optionally, both the first and second connecting members are provided with two pairs of connecting holes, and both ends of the first and second sub-swing arms are provided with through holes. The through holes at both ends of the first sub-swing arm are rotatably connected to a pair of connecting holes on the first connecting member and a pair of connecting holes on the second connecting member through a rotating shaft; the through holes at both ends of the second sub-swing arm are rotatably connected to another pair of connecting holes on the first connecting member and another pair of connecting holes on the second connecting member through a rotating shaft.

[0008] Optionally, both ends of the first hinge and the second hinge are provided with mounting holes.

[0009] Optionally, the first hinge and the second hinge are threadedly connected to the door panel and the door frame respectively through the mounting holes.

[0010] Optionally, a decorative cover may be provided on the mounting hole.

[0011] Optionally, the first hinge has grooves at both ends, and the decorative cover is slidably connected to the grooves.

[0012] Optionally, the second hinge has locking elements at both ends, and the decorative cover of the second hinge has a locking groove, with the decorative cover of the second hinge engaging with the second hinge.

[0013] Optionally, magnetic slots are provided at both ends of the second hinge, and magnetic sheets are provided in the magnetic slots.

[0014] Optionally, the second hinge has adjustment holes at both ends, and adjustment bolts are provided on the adjustment holes.

[0015] Beneficial effects: The double-swing arm ultra-thin concealed hinge of this utility model has a straight swing arm configuration for the first and second sub-swing arms. The space enclosed by the first sub-swing arm, the second sub-swing arm, and the second connecting member is always close to a triangle, which gives the double-swing arm ultra-thin concealed hinge a strong support capacity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the double swing arm ultra-thin concealed hinge in the embodiment;

[0017] Figure 2 This is an exploded view of the ultra-thin concealed hinge of the double swing arm in the embodiment;

[0018] Figure 3 This is a side view of the double-arm ultra-thin concealed hinge in the door panel closed state in the embodiment.

[0019] In the diagram: 1. First hinge; 2. Second hinge; 3. Swing arm mechanism; 31. First sub-swing arm; 32. Second sub-swing arm; 4. Receiving groove; 5. First connector; 6. Second connector; 7. Connecting hole; 8. Through hole; 9. Mounting hole; 10. Decorative cover; 11. Magnetic plate groove; 12. Magnetic plate; 13. Adjustment hole; 14. Adjustment bolt. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The following is combined Figures 1 to 3 The detailed embodiments provided provide an analysis of the ultra-thin concealed hinge of the double swing arm of this utility model.

[0025] Example

[0026] like Figures 1-3 As shown, this embodiment provides a double-swing arm ultra-thin concealed hinge, see [link / reference]. Figure 1 It includes a first hinge 1 connected to the door panel, a second hinge 2 connected to the door frame, and a swing arm mechanism 3 connected between the first hinge 1 and the second hinge 2. The first hinge 1, the second hinge 2 and the swing arm mechanism 3 are all made of metal materials, which are sturdy and durable. The first hinge 1 and the second hinge 2 are relatively thin overall.

[0027] For details, see Figure 2 The first hinge 1 and the second hinge 2 are each provided with a receiving groove 4 to accommodate the swing arm mechanism 3. The receiving groove 4 is located in the middle of the first hinge 1 and the second hinge 2. The size of the receiving groove 4 is similar to that of the swing arm mechanism 3. When the door panel is in the open state, the first hinge 1 and the second hinge 2 are stored in the receiving groove 4. The two receiving grooves 4 are respectively provided with a first connecting member 5 and a second connecting member 6. The swing arm mechanism 3 includes a first sub-swing arm 31 and a second sub-swing arm 32. One end of the first sub-swing arm 31 is hinged to the first connecting member 5, and the other end of the first sub-swing arm 31 is hinged to the second connecting member 6. One end of the second sub-swing arm 32 is hinged to the first connecting member 5, and the other end of the second sub-swing arm 32 is hinged to the second connecting member 6. The first sub-swing arm 31 and the second sub-swing arm 32 are both straight swing arms.

[0028] Specifically, the first connector 5 is disposed on the edge of the receiving groove 4 on the first hinge 1, and the first connector 5 slightly protrudes from the surface of the first connector 5. Part of the second connector 6 is located within the receiving groove 4 on the second hinge 2, and the other part protrudes outside the receiving groove 4. Both the first sub-swing arm 31 and the second sub-swing arm 32 are straight swing arms. (See also...) Figure 3 When the door panel is closed, the second sub-swing arm 32 and the first connecting piece 5 are on the same straight line, and the space enclosed by the first sub-swing arm 31, the second sub-swing arm 32 and the second connecting piece 6 is close to a triangle.

[0029] In one alternative embodiment, see Figure 2 The first connector 5 and the second connector 6 are each provided with two pairs of connecting holes 7. The first sub-swing arm 31 and the second sub-swing arm 32 are each provided with through holes 8. The through holes 8 at both ends of the first sub-swing arm 31 are rotatably connected to a pair of connecting holes 7 on the first connector 5 and a pair of connecting holes 7 on the second connector 6 through a rotating shaft. The through holes 8 at both ends of the second sub-swing arm 32 are rotatably connected to another pair of connecting holes 7 on the first connector 5 and another pair of connecting holes 7 on the second connector 6 through a rotating shaft.

[0030] In one alternative embodiment, see Figure 2Both ends of the first hinge 1 and the second hinge 2 are provided with mounting holes 9; specifically, the mounting holes 9 are provided on both sides of the receiving groove 4, and there is more than one mounting hole 9, so as to better fix it; the mounting holes 9 on the first hinge 1 are not completely round holes, so that even if the groove on the door panel is made crooked, the first hinge 1 can still be fixed well on the door panel.

[0031] In one alternative embodiment, see Figure 2 The first hinge 1 and the second hinge 2 are threadedly connected to the door panel and the door frame respectively through the mounting hole 9.

[0032] In one alternative embodiment, see Figure 2 A decorative cover 10 is provided on the mounting hole 9. Specifically, the first hinge 1 has sliding grooves at both ends, and the decorative cover 10 is slidably connected to the sliding grooves; the second hinge 2 has locking members at both ends, and the decorative cover 10 of the second hinge 2 has a locking groove, and the decorative cover 10 of the second hinge 2 is locked to the second hinge 2; the decorative cover 10 covers the mounting holes 9 at both ends of the first hinge 1 and the second hinge 2, serving a decorative and aesthetic purpose.

[0033] In one alternative embodiment, see Figure 2 The second hinge 2 is also provided with magnetic slots 11 at both ends, and magnetic sheets 12 are provided in the magnetic slots 11. A long strip protrusion is provided along the inner wall of the magnetic slot 11, and the magnetic sheet 12 is fixed in the magnetic slot 11 by the protrusion. With the setting of the magnetic sheet 12, a magnetic attraction will be generated between the magnetic sheet 12 and the decorative cover 10, which will further fix the decorative cover 10 and prevent the decorative cover 10 from slipping off.

[0034] In one optional embodiment, the second hinge 2 has adjustment holes 13 at both ends, and adjustment bolts 14 are provided on the adjustment holes 13; specifically, see Figure 2 The second hinge 2 has two adjustment holes 13 at each end, and adjustment bolts 13 are connected to the adjustment holes 13. The distance between the second hinge 2 and the door gap can be easily adjusted by the cooperation of the adjustment holes 13 and the adjustment bolts 14.

[0035] In use, the user places the first hinge 1 into the corresponding slot on the door panel, and screws pass through the mounting hole 9 to fix the first hinge 1 to the door panel; the second hinge 2 is placed into the corresponding slot on the door frame, and screws pass through the mounting hole 9 to fix the second hinge 2 to the door frame; when the door panel is open, the first sub-swing arm 31 and the second sub-swing arm 32 are both located in the receiving groove 4, see [reference]. Figure 3 When the door panel is closed, the space enclosed by the first sub-swing arm 31, the second sub-swing arm 32, and the second connecting rod is always close to a triangle, resulting in a stable structure and higher support strength.

[0036] The double-swing arm ultra-thin concealed hinge of this utility model, by setting the first sub-swing arm 31 and the second sub-swing arm 32 as straight swing arms, ensures that the space enclosed by the first sub-swing arm 31, the second sub-swing arm 32 and the second connecting rod is always close to a triangle, so that the double-swing arm ultra-thin concealed hinge always has a strong support capacity during the process of opening and closing.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A double-swing-arm ultra-thin concealed hinge, comprising a first hinge (1) connected to a door panel, a second hinge (2) connected to a door frame, and a swing-arm mechanism (3) connecting the first hinge (1) and the second hinge (2), characterized in that, The first hinge (1) and the second hinge (2) are each provided with a receiving groove (4) for accommodating the swing arm mechanism (3), and the two receiving grooves (4) are respectively provided with a first connector (5) and a second connector (6); the swing arm mechanism (3) includes a first sub-swing arm (31) and a second sub-swing arm (32), one end of the first sub-swing arm (31) is hinged to the first connector (5), and the other end of the first sub-swing arm (31) is hinged to the second connector (6); one end of the second sub-swing arm (32) is hinged to the first connector (5), and the other end of the second sub-swing arm (32) is hinged to the second connector (6); the first sub-swing arm (31) and the second sub-swing arm (32) are both straight swing arms.

2. The double-swing arm ultra-thin concealed hinge according to claim 1, characterized in that, The first connector (5) and the second connector (6) are each provided with two pairs of connecting holes (7). The first sub-swing arm (31) and the second sub-swing arm (32) are each provided with through holes (8). The through holes (8) at both ends of the first sub-swing arm (31) are rotatably connected to a pair of connecting holes (7) on the first connector and a pair of connecting holes (7) on the second connector (6) respectively through a rotating shaft. The through holes (8) at both ends of the second sub-swing arm (32) are rotatably connected to another pair of connecting holes (7) on the first connector (5) and another pair of connecting holes (7) on the second connector (6) respectively through a rotating shaft.

3. The double-swing arm ultra-thin concealed hinge according to claim 1, characterized in that, Both ends of the first hinge (1) and the second hinge (2) are provided with mounting holes (9).

4. The double-swing arm ultra-thin concealed hinge according to claim 3, characterized in that, The first hinge (1) and the second hinge (2) are threadedly connected to the door panel and the door frame respectively through the mounting hole (9).

5. The double-swing arm ultra-thin concealed hinge according to claim 3, characterized in that, A decorative cover (10) is provided on the mounting hole (9).

6. The double-swing arm ultra-thin concealed hinge according to claim 5, characterized in that, The first hinge (1) has grooves at both ends, and the decorative cover (10) is slidably connected to the grooves.

7. The double-swing arm ultra-thin concealed hinge according to claim 5, characterized in that, The second hinge (2) has locking pieces at both ends, and the decorative cover (10) of the second hinge (2) has a slot. The decorative cover (10) of the second hinge (2) and the second hinge (2) are interlocked.

8. The double-swing arm ultra-thin concealed hinge according to claim 7, characterized in that, The second hinge (2) is also provided with magnetic slots (11) at both ends, and magnetic pieces (12) are provided in the magnetic slots (11).

9. The double-swing arm ultra-thin concealed hinge according to claim 1, characterized in that, The second hinge (2) has adjustment holes (13) at both ends, and adjustment bolts (14) are provided on the adjustment holes (13).

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