High-load-bearing hidden hinge

Through the high-load-bearing hidden hinge design, the adoption of eccentric load-bearing holes and anti-resistance structure, the existing door and window hinges are solved, and the load-bearing capacity and sealing are achieved, ensuring the stability and installation convenience of doors and windows.

CN223190266UActive Publication Date: 2025-08-05ZHEJIANG JIANSHENG WINDOW CONTROL TECH CO LTD
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Patent Information

Application Number
CN202422447795.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2025-08-05
Estimated Expiration
2034-10-10

AI Technical Summary

Technical Problem

The existing door and window hinges have shortcomings in load-bearing capacity and damping capacity. They are prone to slide and the limit capacity decreases when the damping block is loose, resulting in an increase in the risk of damage to doors and windows.

Method used

The high-load-bearing hidden hinge design is adopted, including fixed seats, connecting plates and door and window mountings. The weight is dispersed through eccentric load-bearing holes and load-bearing bolts. Combined with the anti-resistance structure and the coordination of multiple connecting plates, the uniformity and stability of load-bearing distribution are improved, and the sealing and anti-resistance effect are achieved through the bending plates and limiting grooves.

Benefits of technology

It improves the load-bearing capacity and sealing of door and window hinges, prevents rebound and air leakage, enhances the stability and convenience of installation, and reduces the risk of doors and windows shaking due to strong winds.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a high-load-bearing hidden type hinge which comprises a fixing base, a first connecting piece, a second connecting piece, a third connecting piece and a door and window installation piece, and the first connecting piece is respectively riveted with the second connecting piece and one end of the bottom of the door and window installation piece. A sliding rail is arranged on one side of the fixing base, a sliding block is movably arranged in the sliding rail, the sliding block is riveted with the end, away from the third connecting piece, of the second connecting piece, and the door and window mounting piece comprises a horizontal mounting part and a vertical mounting part. The horizontal installation part and the vertical installation part are integrally formed, a bearing hole is formed in the end face, fixed to the door and window, of the vertical installation part, the bearing hole and the vertical installation part are eccentrically arranged, a bearing bolt used for improving bearing is arranged in the bearing hole, and the bearing bolt is in riveted connection or threaded connection with the bearing hole. The bearing capacity of the hinge is improved by improving the existing structure.
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Description

Technical Field

[0001] The utility model relates to the technical field of door and window accessories, in particular to a high-load-bearing hidden hinge. Background Art

[0002] Door and window hinges are an important part of the door and window installation structure. Doors and windows can only be movably connected to the door frame through door and window hinges. In order to improve the load-bearing capacity of the hinges, the current door and window hinges are equipped with hidden door and window mounting parts. The door and window mounting parts are equipped with columns that can be hidden and installed inside the doors and windows, so that the hinges can bear heavier doors and windows while being beautiful.

[0003] The Chinese utility model patent with publication number "CN218970949U" discloses a door and window hinge, comprising a fixed plate and an active rod hinged to the fixed plate, the active rod being hinged to a window sash linkage rod at one end near the window sash, a sliding rod being linked between the window sash linkage rod and the fixed plate, the middle of the sliding rod being hinged to the active rod, the fixed plate being provided with a sliding groove, a hinge part being provided between the sliding rod and the sliding groove, the upper end of the hinge part being hinged to the sliding rod, and the lower end being hinged to a sliding block, which moves back and forth in the sliding groove; a secondary connecting rod is also hinged between the window sash linkage rod and the sliding rod, the secondary connecting rod being used to form a linkage between the window sash linkage rod and the sliding rod, and the secondary connecting rod is located at one end of the window sash linkage rod and the sliding rod away from the fixed plate, and also comprising a damping block for installation on the edge of the door and window, a shoulder being provided on the damping block, the shoulder facing in a direction away from the edge of the door and window, the shoulder being used to abut against the secondary connecting rod when the door and window hinge is closed, and the shoulder being elastic to provide damping when the door and window and the door and window hinge are closed.

[0004] However, the above-mentioned door and window hinges have the following technical defects:

[0005] The above-mentioned door and window hinges are easy to slide down when installed above the doors and windows, which increases the risk of damage to the doors and windows when the doors and windows are too heavy;

[0006] The above-mentioned door and window hinges limit the connecting rod through the damping block on the edge of the door and window. When the connection between the damping block and the door and window is loose, the limiting ability of the connecting rod is significantly reduced. Utility Model Content

[0007] The technical problem to be solved by the present invention is to provide a high-load-bearing hidden hinge with strong load-bearing capacity and high damping capacity in view of the deficiencies of the above-mentioned prior art.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-load-bearing hidden hinge, including a fixing seat, a first connecting piece, a second connecting piece, a third connecting piece and a door and window mounting piece, the first connecting piece is riveted to the second connecting piece and one end of the bottom of the door and window mounting piece respectively, the third connecting piece is riveted to one end of the second connecting piece and one end of the bottom of the door and window mounting piece away from the second connecting piece, a sliding rail is provided on one side of the fixing seat, a slider is movably provided in the sliding rail, the slider is riveted to one end of the second connecting piece away from the third connecting piece, the door and window mounting piece includes a horizontal mounting part and a vertical mounting part, the horizontal mounting part and the vertical mounting part are integrally formed, a load-bearing hole is provided on the end surface where the vertical mounting part is fixed to the door and window, the load-bearing hole and the vertical mounting part are eccentrically arranged, a load-bearing bolt for increasing the load-bearing capacity is provided in the load-bearing hole, and the load-bearing bolt is riveted or threadedly connected to the load-bearing hole.

[0009] The above technical solution, through the two-part design of the door and window mounting assembly, ensures both the high load-bearing capacity of the hinge and the concealedness of the door and window mounting assembly within the door and window. Furthermore, the eccentrically positioned load-bearing hole in the vertical mounting portion and the corresponding load-bearing bolt effectively disperse the weight of the door and window, improving the uniformity of load distribution and overall stability. Furthermore, the multiple connecting pieces effectively guarantee the hinge's opening and closing capabilities.

[0010] The present invention can be further configured as follows: an anti-rebound structure that can resist the third connecting piece is provided at one end of the horizontal mounting portion away from the first connecting piece, and the anti-rebound structure is a bent piece extending downward on the side of the horizontal mounting portion away from the third connecting piece. The bent piece can resist the third connecting piece, and the bent piece can limit the displacement of the door and window mounting part toward the end of the bent piece close to the third connecting piece when the hinge is closed, thereby limiting the entire hinge from displacing toward the end of the bent piece close to the third connecting piece.

[0011] The above technical solution is adopted: through the setting of the anti-rebound structure, the door and window mounting part is installed in the window sash, and the fixing seat is installed in the window frame. When the user closes the window sash, the door and window mounting part drives the first connecting piece, the second connecting piece and the third connecting piece to rotate and fold, thereby prompting the second connecting piece to slide along the slide rail. During the folding process, the anti-rebound structure gradually approaches the third connecting piece until it abuts against each other, thereby pushing the third connecting piece to complete the rotation and folding action. After the window sash is closed, the position of the third connecting piece is limited by the anti-rebound mechanism, thereby preventing the window sash from rocking back and forth due to strong winds and rebounding, while avoiding air leakage and improving the sealing performance. Through the bending piece, when the window sash is closed, the bending piece on the door and window mounting part abuts against the third connecting piece, thereby playing a limiting role, preventing the window sash from rocking back and forth due to strong winds and improving its use effect.

[0012] The present invention can be further configured as follows: a bending head is provided at one end where the first connecting piece is riveted to the fixing seat, the bending distance of the bending head is equal to the thickness of the second connecting piece, the first connecting piece is provided with an accommodating groove, and when the third connecting piece overlaps with the second connecting piece, the third connecting piece can be placed in the accommodating groove.

[0013] By adopting the above technical solution, the first connecting piece can be directly connected to the fixing seat above the second connecting piece without the help of other parts. The connection between the first connecting piece and the fixing seat is more stable, and the first connecting piece is also not easy to fall out, further enhancing the load-bearing capacity.

[0014] The present invention can be further configured as follows: a bent portion is provided at one end of the second connecting piece close to the third connecting piece, the diameter of the end of the bent portion riveted to the third connecting piece is equal to the diameter of the end portion of the third connecting piece, and the second connecting piece and the third connecting piece can be placed in the accommodating groove when overlapping.

[0015] Using the above technical solution: when the hinge is in a closed state, the second connecting piece and the third connecting piece overlap, and the second connecting piece and the third connecting piece can be placed in the accommodating groove through the accommodating groove of the first connecting piece, so that the overall volume of the hinge can be reduced and the hinge can be installed in more smaller spaces.

[0016] The utility model can be further configured as follows: adjusting pressure pieces are provided opposite to each other at both ends of the bottom surface of the fixed seat, and an adjusting pressure piece is also provided between the fixed seat and the first connecting piece and the slide rail. The adjusting pressure pieces are all rotatably arranged on the fixed seat, and the adjusting pressure piece and the fixed seat are riveted. A rubber gasket is provided between the adjusting pressure piece and the fixed seat, and the rubber gasket is used to space the adjusting pressure piece and the fixed seat.

[0017] With this technical solution, the adjusting pressure piece can be rotated and set on the fixing base via an Allen screw. After inserting the fixing base into the window frame connecting profile, the Allen screw is turned with an Allen wrench, driving the adjusting pressure piece to rotate so that the raised portions at both ends of the adjusting pressure piece secure the fixing base to the window frame connecting profile, achieving a convenient installation effect. In addition, the rubber gasket between the adjusting pressure piece and the fixing base effectively reduces collision and friction between the two. The elasticity of the rubber gasket also maintains a gap for movement, which does not affect the convenient installation effect.

[0018] The present invention can be further configured as follows: a fixed pressing plate is rotatably provided on one end of the door and window mounting piece away from the first connecting piece, and the door and window mounting piece is also provided with a placement groove for accommodating the fixed pressing plate, and limit blocks arranged diagonally are fixed on both sides of the placement groove, and limit grooves are provided on both sides of the fixed pressing plate to counteract the limit blocks.

[0019] The above technical solution is adopted: Compared with the existing technology that mostly uses self-tapping screws to install the sash mounting plate, the utility model uses the setting of a fixed pressing plate, and the fixed pressing plate can be rotated and set on the door and window mounting part through the hexagonal screw. After the door and window mounting part is inserted into the window sash, the hexagonal screw is rotated with an hexagonal wrench to drive the fixed pressing plate to rotate, so that the raised parts at both ends of the fixed pressing plate fix the door and window mounting part and the window sash, achieving the effect of convenient installation, and at the same time combined with the fixed pressing plate to achieve a double fixing effect; through the setting of the limit block and the limit groove, it is helpful for the staff to distinguish the installation direction during installation and improve the installation efficiency.

[0020] The present invention can be further configured as follows: an end of the slider away from the fixed seat is extended with a resistance block that can resist the slide rail, and a slide groove is formed between the resistance block and the second connecting piece. The slider can move along the linear direction of the slide rail through the slide groove. When the slider moves along the linear direction of the slide rail, the resistance block limits the slider within the slide rail.

[0021] The above technical solution is adopted: a resistance block extends from the bottom of the slider, and a sliding groove is formed between the resistance block and the second connecting piece. The resistance block can resist the fixed seat, ensuring that the slider always slides in the slide rail. At the same time, when the second connecting piece transmits force to the slider, the resistance block resists the fixed seat, further improving the load-bearing capacity of the hinge.

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the utility model;

[0024] Figure 2 It is an overall schematic diagram of the utility model from another perspective;

[0025] Figure 3 This is an explosion diagram of the utility model;

[0026] Figure 4 This is a schematic diagram of the bottom of the fixing seat of the utility model;

[0027] Figure 5 This is a schematic diagram of the combined portion of the door and window mounting member and the fixing pressing plate of the present invention;

[0028] Figure 6 This is a schematic diagram of the combination of the second connecting piece and the slider of the utility model;

[0029] Label annotation: fixed seat 1, slide rail 11, adjusting pressure plate 12, rubber gasket 13, first connecting piece 2, bending head 21, accommodating groove 22, second connecting piece 3, slider 31, interference block 311, slide groove 312, bending portion 32, third connecting piece 4, door and window mounting part 5, horizontal mounting portion 51, bending piece 511, fixed pressure plate 512, placement groove 513, limit block 514, limit groove 515, vertical mounting portion 52, load-bearing hole 521, load-bearing bolt 522. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figure 1 、 Figure 2 、 Figure 3 The high-load-bearing hidden hinge shown in the figure includes a fixing base 1, a first connecting piece 2, a second connecting piece 3, a third connecting piece 4 and a door and window mounting piece 5. The first connecting piece 2 is riveted to the second connecting piece 3 and one end of the bottom of the door and window mounting piece 4 respectively, and the third connecting piece 4 is riveted to one end of the second connecting piece 3 and the end of the bottom of the door and window mounting piece 4 away from the second connecting piece 3. A slide rail 11 is provided on one side of the fixing base 1, and a slider 31 is movably provided in the slide rail 11. The slider 31 is riveted to one end of the second connecting piece 3 away from the third connecting piece 4. The second connecting piece 3 can rotate relative to the slider 31. The second connecting piece 3 can rotate as the slider 31 moves along the slide rail 11. The second connecting piece 3 can rotate. The rotation of the connecting piece 3 can drive the rotation of the first connecting piece 2, and the third connecting piece 4 can be linked with the first connecting piece 2 through the door and window mounting piece 5. The door and window mounting piece 5 realizes the opening and closing of the hinge through the first connecting piece 2, the second connecting piece 3 and the third connecting piece 4. The first, second and third connecting pieces are linked with the door and window mounting piece 5 through the slider. When the slider 31 moves in the straight direction along the slide rail 11, the linear motion is converted into the curved motion of the second connecting piece 3. Since the first and third connecting pieces are riveted to the second connecting piece 3, when the second connecting piece 3 moves in a curved motion, the first and third connecting pieces perform a curved motion synchronously, thereby driving the curved motion of the door and window mounting piece 5 to realize the opening and closing action of the hinge.

[0032] The door and window mounting member 5 includes a horizontal mounting portion 51 and a vertical mounting portion 52. The horizontal mounting portion 51 and the vertical mounting portion 52 are integrally formed. A load-bearing hole 521 is provided on the end surface of the vertical mounting portion 52 where it is fixed to the door and window. The load-bearing hole 521 is eccentrically positioned relative to the vertical mounting portion 52. A load-bearing bolt 522 is provided within the load-bearing hole 521 to increase the load-bearing capacity. The load-bearing bolt 522 is riveted or threadedly connected to the load-bearing hole 521. The two-part arrangement of the door and window mounting member 5 ensures both the high load-bearing capacity of the hinge and the concealment of the door and window mounting member within the door and window. At the same time, the eccentrically positioned load-bearing hole 521 within the vertical mounting portion 52 and the corresponding load-bearing bolt 522 effectively disperse the weight of the door and window, improving the uniformity of the load distribution and overall stability. Furthermore, the combination of multiple connecting pieces effectively ensures the hinge's opening and closing capabilities.

[0033] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The horizontal mounting portion 51 shown is provided with an anti-rebound structure at one end away from the first connecting piece 2, which can counteract the third connecting piece 4. The anti-rebound structure is a bent piece 511 extending downward on the side of the horizontal mounting portion 51 away from the third connecting piece 4. The bent piece 511 can counteract the third connecting piece 4. When the hinge is closed, the bent piece 511 can limit the door and window mounting component 5 from continuously displacing toward the end of the bent piece 511 close to the third connecting piece 4, thereby limiting the hinge as a whole from displacing toward the end of the bent piece 511 close to the third connecting piece 4. By setting up the anti-rebound structure, the door and window mounting member 5 is installed in the window sash, and the fixing seat is installed in the window frame. When the user closes the window sash, the door and window mounting member drives the first connecting piece 2, the second connecting piece 3 and the third connecting piece 4 to rotate and fold, thereby prompting the second connecting piece 3 to slide along the slide rail 11. During the folding process, the anti-rebound structure gradually approaches the third connecting piece 4 until it abuts against each other, thereby pushing the third connecting piece 4 to complete the rotation and folding action. After the window sash is closed, the position of the third connecting piece 4 is limited by the anti-rebound mechanism, thereby preventing the window sash from rocking back and forth due to strong winds and rebounding, while also avoiding air leakage and improving the sealing performance. Through the bending piece 511, when the window sash is closed, the bending piece 511 on the door and window mounting member abuts against the third connecting piece 4, thereby playing a limiting role, preventing the window sash from rocking back and forth due to strong winds and improving its use effect.

[0034] The end of the first connecting piece 2 riveted to the fixing base 1 is provided with a bending head 21. The bending distance of the bending head 21 is equal to the thickness of the second connecting piece 3. The first connecting piece 2 can be directly connected to the fixing base above the second connecting piece without the need for other parts to connect to the fixing base. The connection between the first connecting piece and the fixing base is more stable and the first connecting piece is also less likely to fall out, further enhancing the load-bearing capacity. The first connecting piece 2 is provided with a receiving groove 22. When the third connecting piece 4 overlaps with the second connecting piece 3, the third connecting piece 4 can be placed in the receiving groove 22, so that the third connecting piece 4 and the first connecting piece 2 can fit tightly together, reducing the overall size of the hinge.

[0035] like Figures 1 to 5 The second connecting piece 3 shown has a bent portion 32 at one end near the third connecting piece 4. The diameter of the end of the bent portion 32 riveted to the third connecting piece 4 is equal to the diameter of the end of the third connecting piece 4. When the second connecting piece 3 and the third connecting piece 4 overlap, they can be placed in the receiving groove 22. When the hinge is in the closed state, the second connecting piece 3 and the third connecting piece 4 overlap and can be placed in the receiving groove 22 of the first connecting piece 2. This reduces the overall size of the hinge and allows the hinge to be installed in more smaller spaces.

[0036] like Figure 3 The bottom surface of the fixing seat 1 shown is provided with adjustment pressure pieces 12 at both ends thereof. The fixing seat 1 is also provided with an adjustment pressure piece 12 between the first connecting piece 2 and the slide rail 11. The adjustment pressure pieces 12 are all rotatably set on the fixing seat 1. The adjustment pressure pieces 12 are riveted to the fixing seat 1. The adjustment pressure pieces 12 can be rotatably set on the fixing seat by means of hexagon socket screws. After the fixing seat is inserted into the window frame connecting profile, the hexagon socket screws are rotated using an hexagon socket wrench to drive the adjustment pressure piece to rotate so that the raised portions at both ends of the adjustment pressure piece fix the fixing seat and the window frame connecting profile, achieving the effect of convenient installation. A rubber gasket 13 is provided between the adjustment pressure piece 12 and the fixing seat 1. The rubber gasket 13 is used to separate the adjustment pressure piece 12 and the fixing seat 1. The rubber gasket 13 can effectively alleviate the collision and friction between the two. The elasticity of the rubber gasket 13 can also retain the gap of the activity, which will not affect the convenient installation.

[0037] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5The door and window mounting member 5 shown is rotatably provided with a fixed pressing plate 512 on one end away from the first connecting plate 2. The door and window mounting member 5 is also provided with a placement groove 513 for accommodating the fixed pressing plate 512. Diagonally arranged limit blocks 514 are fixed on both sides of the placement groove 513. Limit grooves 515 are provided on both sides of the fixed pressing plate 512 to abut against the limit blocks 514. Compared with the prior art which mostly uses self-tapping screws to install the sash mounting pieces, the present invention adopts the setting of a fixed pressing piece 512, and the fixed pressing piece 512 can be rotated and set on the door and window mounting part 5 through the hexagon socket screw. After the door and window mounting part 5 is inserted into the window sash, the hexagon socket screw is rotated with an hexagon socket wrench to drive the fixed pressing piece 512 to rotate, so that the raised parts at both ends of the fixed pressing piece 512 fix the door and window mounting part 5 and the window sash, achieving the effect of convenient installation. At the same time, combined with the fixed pressing piece 512, a double fixing effect is achieved, and through the setting of the limit block 514 and the limit groove 515, it is helpful for the staff to distinguish the installation direction during installation, thereby improving the installation efficiency.

[0038] like Figure 3 、 Figure 4 、 Figure 6 The slider 31 shown has an end extending away from the fixed seat 1 and an interference block 311 that can interfere with the slide rail 11. A slide groove 312 is formed between the interference block 311 and the second connecting piece 3. The slider 31 can move along the linear direction of the slide rail 11 through the slide groove 312. When the slider 31 moves along the linear direction of the slide rail 11, the interference block 311 limits the slider 31 in the slide rail 11. The interference block 311 can interfere with the fixed seat 1, ensuring that the slider 31 always slides in the slide rail 11. At the same time, when the second connecting piece 3 transmits force to the slider 31, the interference block 311 interferes with the fixed seat 1, further improving the bearing capacity of the hinge. The second connecting piece 3 is rotatable relative to the slider 31. The second connecting piece 3 can perform curvilinear motion as the slider 31 moves along the slide rail 11. Displacement of the second connecting piece 3 can drive the first connecting piece 2 to rotate. The third connecting piece 4 can be linked to the first connecting piece 2 via the door and window mounting member 5. The door and window mounting member 5 operates the hinge by means of the first connecting piece 2, the second connecting piece 3, and the third connecting piece 4. The first, second, and third connecting pieces are linked to the door and window mounting member 5 via the slider 31. When the slider 31 moves linearly along the slide rail 11, the linear motion is converted into curvilinear motion of the second connecting piece 3. Because the first and third connecting pieces are riveted to the second connecting piece, when the second connecting piece 3 moves curvilinearly, the first and third connecting pieces also perform curvilinear motion synchronously, thereby driving the curvilinear motion of the door and window mounting member 5, thereby achieving the opening and closing of the hinge.

[0039] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A high-load-bearing concealed hinge, comprising a fixing base, a first connecting piece, a second connecting piece, a third connecting piece, and a door and window mounting member, wherein the first connecting piece is riveted to the second connecting piece and one end of the bottom of the door and window mounting member, respectively; the third connecting piece is riveted to one end of the second connecting piece and an end of the bottom of the door and window mounting member away from the second connecting piece; a slide rail is provided on one side of the fixing base, a slider is movably provided within the slide rail, and the slider is riveted to one end of the second connecting piece away from the third connecting piece, characterized in that: The door and window mounting parts include a horizontal mounting part and a vertical mounting part. The horizontal mounting part and the vertical mounting part are integrally formed. A load-bearing hole is provided on the end surface of the vertical mounting part where the door and window are fixed. The load-bearing hole is eccentrically arranged with respect to the vertical mounting part. A load-bearing bolt for increasing the load-bearing capacity is provided in the load-bearing hole. The load-bearing bolt is riveted or threadedly connected to the load-bearing hole.

2. A high load-bearing hidden hinge according to claim 1, characterized in that: The end of the horizontal mounting portion away from the first connecting piece is provided with an anti-rebound structure that can resist the third connecting piece. The anti-rebound structure is a bent piece extending downward on the side of the horizontal mounting portion away from the third connecting piece. The bent piece can resist the third connecting piece. When the hinge is closed, the bent piece can limit the displacement of the door and window mounting part toward the end of the bent piece close to the third connecting piece, thereby limiting the entire hinge from displacing toward the end of the bent piece close to the third connecting piece.

3. A high load-bearing hidden hinge according to claim 2, characterized in that: A bending head is provided at one end of the first connecting piece riveted to the fixing seat, and the bending distance of the bending head is equal to the thickness of the second connecting piece. The first connecting piece is provided with a receiving groove, and when the third connecting piece overlaps with the second connecting piece, the third connecting piece can be placed in the receiving groove.

4. The high load-bearing hidden hinge according to claim 3, characterized in that: The second connecting piece is provided with a bent portion at one end close to the third connecting piece. The diameter of the bent portion and the end riveted to the third connecting piece is equal to the diameter of the end of the third connecting piece. When the second connecting piece and the third connecting piece overlap, they can be placed in the accommodating groove.

5. A high load-bearing hidden hinge according to any one of claims 1 to 4, characterized in that: Adjustment pressing plates are provided at both ends of the bottom surface of the fixed seat, and the fixed seat is also provided with an adjustment pressing plate between the first connecting plate and the slide rail. The adjustment pressing plates are all rotatably set on the fixed seat, and the adjustment pressing plates are riveted to the fixed seat. A rubber gasket is provided between the adjustment pressing plate and the fixed seat, and the rubber gasket is used to space the adjustment pressing plate and the fixed seat.

6. The high load-bearing hidden hinge according to claim 5, characterized in that: A fixed pressing plate is rotatably provided on one end of the door and window mounting piece away from the first connecting piece. The door and window mounting piece is also provided with a placement groove for accommodating the fixed pressing plate. Diagonally arranged limit blocks are fixed on both sides of the placement groove, and limit grooves are provided on both sides of the fixed pressing plate to abut against the limit blocks.

7. The high load-bearing hidden hinge according to claim 1, characterized in that: An end of the slider away from the fixed seat extends with a resistance block that can resist the slide rail, and a slide groove is formed between the resistance block and the second connecting piece. The slider can move along the linear direction of the slide rail through the slide groove. When the slider moves along the linear direction of the slide rail, the resistance block limits the slider within the slide rail.

Citation Information

Patent Citations

  • Door and window hinge

    CN218970949U