Limiting resistance hinge

Abstract

The utility model discloses a limit resistance hinge belonging to the field of doors and windows, which comprises a fixed seat, a first connecting piece, a second connecting piece, a third connecting piece and a door and window mounting piece, a sliding groove is arranged on one side of the fixed seat far away from the second connecting piece, a resistance sliding block is arranged in the sliding groove, and the resistance sliding block can abut against the fixed seat. A resistance adjusting bolt is arranged on the resistance sliding block and can adjust the friction force of the resistance sliding block relative to the fixing base, the first connecting piece is hinged to one side of the resistance sliding block, a limiting notch is formed in the second connecting piece, and an eccentric bolt is arranged on the side, close to the limiting notch, of the fixing base. And the maximum opening and closing angle of the hinge is limited by rotation of the eccentric bolt. The resistance sliding block and the eccentric bolt are arranged at the two ends of the fixing base respectively, and the friction force of the resistance sliding block relative to the fixing base and the maximum hinge opening and closing angle achieved by the eccentric bolt and the limiting notch can be independently adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window accessory technical field, concretely relates to a limiting resistance hinge. BACKGROUND

[0002] Door and window hinge is an important component in door and window installation structure, and door and window can be connected on the door frame only through the door and window hinge, and the current door and window hinge is provided with a hidden door and window mounting part in order to improve the load capacity of the hinge, the door and window mounting part is provided with a stand column which can be hiddenly installed in the door and window, so that the hinge can bear the door and window with larger weight and has the appearance.

[0003] The Chinese utility model patent with the publication number "CN113982399A" discloses a hinge angle adjusting mechanism and a hidden hinge, which comprises a frame mounting base, a long branch and a middle branch, the middle branch and the long branch are cross arranged and are hinged through a first pin shaft, the proximal end of the middle branch is hinged with the frame mounting base, the proximal end of the long branch is hinged with a sliding seat, a sliding groove with a contraction groove section is arranged on the frame mounting base, the sliding seat is slidingly matched in the sliding groove, an angle adjusting screw is supported on the sliding seat, the lower end of the angle adjusting screw is provided with a limiting part which can be slidingly matched with the sliding groove, before rotating the angle adjusting screw, the limiting part is limited by the contraction groove section, and after rotating the angle adjusting screw, the limiting part can pass through the contraction groove section.

[0004] However, the above-mentioned hidden hinge has the following defects:

[0005] Firstly, although the sliding seat can generate certain friction on the frame mounting base, the damping capacity of the sliding seat will be greatly reduced when adjusting the maximum opening and closing angle of the hinge, and when the wind force is large, the wind support capacity of the sliding seat is poor, so that the door and window cannot be supported, and the door and window is easy to collide and cause damage to the door and window.

[0006] Secondly, the installation mode of the hinge and the door and window is relatively simple, and when installed above the door and window, it is easy to slide down, and when the weight of the door and window is too heavy, the risk of damage to the door and window is increased.

[0007] Therefore, it is necessary to improve the above-mentioned defects. UTILITY MODEL CONTENTS

[0008] The utility model discloses a limiting resistance hinge, which solves the above-mentioned problems in the prior art.

[0009] The utility model discloses the technical scheme adopted is: a limit resistance hinge, including fixed seat, first connecting piece, second connecting piece, third connecting piece and door and window mounting piece, first connecting piece respectively with second connecting piece and door and window mounting piece bottom one end riveting, third connecting piece with second connecting piece one end and door and window mounting piece bottom close second connecting piece one end riveting, the side of fixed seat away from second connecting piece is equipped with the sliding slot, is equipped with resistance sliding block in the sliding slot, and resistance sliding block can be with fixed seat and touch, and resistance adjusting bolt is equipped on resistance sliding block, and resistance adjusting bolt can adjust the friction of resistance sliding block relative to fixed seat, and first connecting piece is hinged in resistance sliding block one side, and the limit gap is seted up on second connecting piece, and the eccentric bolt is equipped with on the side of fixed seat close limit gap, and the eccentric bolt rotation realizes the limitation of the maximum opening angle of hinge.

[0010] Through adopting the above technical scheme: the rotation resistance adjusting bolt can adjust the friction of resistance sliding block to fixed seat, can adjust the wind bearing capacity of door and window, adjusts the damping effect of door and window, and the eccentric bolt is arranged on the side of fixed seat close second connecting piece, and the limit gap on second connecting piece cooperates with the eccentric bolt and realizes the limitation of the maximum opening angle of hinge, compared with the limitation of the maximum opening angle of synchronous realization of sliding seat and wind bearing function in prior art, the resistance adjustment and angle adjustment are realized by resistance sliding block and eccentric bolt respectively, and the stability of hinge is higher, when the narrower side of eccentric bolt is close to second connecting piece, the maximum opening angle of hinge is 180 DEG, when the wider end is rotated to the side of second connecting piece, the contact part of limit gap and eccentric bolt gradually increases, when the widest part is embedded in limit gap, the maximum opening angle of hinge is 90 DEG, can independently adjust the friction of resistance sliding block to fixed seat and improve the wind bearing capacity of hinge, and can stably realize the limitation of the maximum opening angle through limit gap and eccentric bolt, and the resistance and angle of hinge can be stably adjusted.

[0011] The above-mentioned limit resistance hinge can be further provided with: the resistance sliding block includes a sliding friction block and a sliding fixed block, the sliding fixed block is provided with a connecting groove close to the first connecting piece, a hinge hole is arranged in the middle of the connecting groove, the first connecting piece is connected in the connecting groove through the hinge hole, a fixed piece is arranged on the side of the fixed seat away from the door and window mounting piece at the connecting position of the second connecting piece and the eccentric bolt, the fixed piece can stably connect the second connecting piece and the eccentric bolt, and a rotation mark is arranged on the side of the resistance sliding block close to the resistance adjusting bolt.

[0012] By adopting the technical scheme, the resistance sliding block is divided into a sliding friction block and a sliding fixed block, the first connecting piece is hinged to the resistance sliding block through the hinge hole on the connecting groove and preliminarily hinged to the sliding friction block and the sliding fixed block, and then the friction force of the sliding friction block and the sliding fixed block on the fixed seat can be quickly adjusted through the resistance adjusting bolt, so that the bearing capacity of the hinge to the wind force is adjusted, and the adaptability of the hinge is improved. In addition, the bottom of the eccentric bolt and the second connecting piece are provided with a fixing piece, the second connecting piece is hinged to the fixed seat while fixing the fixing piece, and the fixing piece can effectively prevent the eccentric bolt from being separated from the fixed seat when the eccentric bolt is rotated, thereby prolonging the service life of the angle limiting capacity of the eccentric bolt and the limiting gap.

[0013] The above-mentioned limiting resistance hinge can be further provided as follows: 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, the first connecting piece is hinged to the intersection of the horizontal mounting part and the vertical mounting part, and a plurality of lightening grooves are formed on the side of the horizontal mounting part away from the vertical mounting part.

[0014] By adopting the above technical scheme, the two parts of the door and window mounting piece are provided, which not only ensures the high load bearing of the hinge but also ensures the concealment of the door and window mounting piece in the door and window, and the load bearing hole eccentrically arranged in the vertical mounting part and the load bearing bolt matched therewith effectively disperse the weight of the door and window, improve the uniformity of load bearing distribution and the overall stability. In addition, the multiple connecting pieces cooperate to effectively ensure the opening and closing ability of the hinge, and the lightening grooves on the bottom surface of the horizontal mounting part reduce the overall weight of the door and window mounting piece, which not only ensures the load bearing capacity of the hinge but also reduces the production material consumption and production cost.

[0015] The above-mentioned limiting resistance hinge can be further provided as follows: the vertical mounting part is provided with a vertical adjusting hole at the top, and a vertical adjusting bolt is arranged in the vertical adjusting hole; the hinge joint of the first connecting piece and the second connecting piece is a sealing adjusting bolt, which can adjust the sealing degree of the hinge.

[0016] By adopting the above technical scheme, the door and window mounting piece can be adjusted in a certain position in the vertical direction through the vertical adjusting bolt, and the opening and closing smoothness of the hinge is adjusted by the sealing adjusting bolt of the first connecting piece and the second connecting piece, so that the installation position can be adaptively adjusted during installation, so as to achieve the best installation opening and closing performance.

[0017] The limiting resistance hinge can be further provided with an anti-rebound structure capable of abutting against the third connecting piece at the end of the horizontal mounting portion away from the first connecting piece, a bent piece extending downward on the side of the horizontal mounting portion away from the third connecting piece, the bent piece being capable of abutting against the third connecting piece, and the bent piece being capable of limiting the displacement of the door and window mounting member toward the end of the third connecting piece away from the bent piece when the hinge is closed, thereby limiting the displacement of the whole hinge toward the end of the third connecting piece away from the bent piece.

[0018] By adopting the above technical scheme, when the door and window mounting member is installed in the sash and the fixed seat is installed in the window frame, the first connecting piece, the second connecting piece and the third connecting piece are rotated and folded when the user closes the sash, so as to drive the second connecting piece to slide along the sliding rail, the anti-rebound structure gradually approaches the third connecting piece until abutting against the third connecting piece in the folding process, thereby driving the third connecting piece to complete the rotating and folding action, and the position of the third connecting piece is limited by the anti-rebound mechanism after the sash is closed, thereby preventing the sash from shaking back and forth due to strong wind and rebounding, avoiding air leakage and improving the sealing performance. By the bent piece, the bent piece on the door and window mounting member abuts against the third connecting piece when the sash is closed, thereby limiting the position and avoiding the sash from shaking back and forth due to strong wind, and improving the use effect.

[0019] The limiting resistance hinge can be further provided with an anti-rebound structure capable of abutting against the third connecting piece at the end of the horizontal mounting portion away from the first connecting piece, a bent piece extending downward on the side of the horizontal mounting portion away from the third connecting piece, the bent piece being capable of abutting against the third connecting piece, and the bent piece being capable of limiting the displacement of the door and window mounting member toward the end of the third connecting piece away from the bent piece when the hinge is closed, thereby limiting the displacement of the whole hinge toward the end of the third connecting piece away from the bent piece.

[0020] By adopting the above technical scheme, the adjusting pressure pieces can be rotatably arranged on the fixed seat by the inner hexagonal screws, the fixed seat is inserted into the window frame connecting profile, the inner hexagonal wrench is used to rotate the inner hexagonal screws, the adjusting pressure pieces are driven to rotate, the protruding portions at both ends of the adjusting pressure pieces fix the fixed seat and the window frame connecting profile, and the installation is convenient. The rubber gaskets between the adjusting pressure pieces and the fixed seat effectively alleviate the collision and friction therebetween, the elasticity of the rubber gaskets can also retain the movable gap, and the installation convenience is not affected.

[0021] The limiting resistance hinge can be further provided with an anti-rebound structure capable of abutting against the third connecting piece at the end of the horizontal mounting portion away from the first connecting piece, a bent piece extending downward on the side of the horizontal mounting portion away from the third connecting piece, the bent piece being capable of abutting against the third connecting piece, and the bent piece being capable of limiting the displacement of the door and window mounting member toward the end of the third connecting piece away from the bent piece when the hinge is closed, thereby limiting the displacement of the whole hinge toward the end of the third connecting piece away from the bent piece.

[0022] By adopting the technical scheme, the reinforcing part is arranged perpendicularly to the fixing base, and when the hinge is installed, the reinforcing part can be fixed to the side of the installation position, the strength and stability of the hinge are increased, the fixing base is effectively prevented from shaking, and the stability of the hinge is improved.

[0023] The limiting resistance hinge can be further provided with a fixing pressing piece rotatably arranged on the end of the door and window mounting part away from the first connecting piece, and the door and window mounting part is provided with a placing groove for accommodating the fixing pressing piece.

[0024] By adopting the technical scheme, compared with the self-tapping screw used to install the fan mounting piece in the prior art, the fixing pressing piece is arranged, and the fixing pressing piece is rotatably arranged on the door and window mounting part through the internal hexagonal screw, after the door and window mounting part is inserted into the window fan, the internal hexagonal wrench is used to rotate the internal hexagonal screw, the fixing pressing piece is driven to rotate, the two end protruding parts of the fixing pressing piece fix the door and window mounting part and the window fan, the convenient installation effect is realized, and the double fixing effect is realized in combination with the fixing pressing piece.

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

[0026] First, the resistance sliding block and the eccentric bolt are arranged at the two ends of the fixing base respectively, the friction force of the resistance sliding block relative to the fixing base and the maximum opening angle of the hinge realized by the eccentric bolt and the limiting gap can be adjusted separately, the resistance sliding block and the eccentric bolt can be adjusted simultaneously, the adaptability of the hinge is higher, the wind bracing capacity of the resistance sliding block and the fixing base to the door and window is ensured, and the accurate control of the maximum opening angle of the hinge is realized.

[0027] Second, the door and window mounting part is divided into a horizontal mounting part and a vertical mounting part, the vertical adjusting bolt arranged on the vertical mounting part can adjust a certain distance of the door and window mounting part in the door and window mounting position, a plurality of height installation positions can be adapted, the adaptability of the hinge is improved, meanwhile, the fixing pressing piece in the weight reduction groove at the bottom of the horizontal mounting part and the placing groove at the end part reduces the overall weight of the hinge and improves the stability of the door and window mounting part and the door and window mounting position, and the overall stability of the hinge is improved.

[0028] The utility model will be further explained in detail in combination with the drawings and embodiments. DRAWINGS

[0029] Figure 1 It is the whole schematic view of the limiting resistance hinge of the utility model;

[0030] Figure 2Another perspective integral diagram of the limiting resistance hinge of the utility model shows;

[0031] Figure 3 The fixed seat structure schematic diagram of the utility model shows;

[0032] Figure 4 The resistance sliding block structure schematic diagram of the utility model shows;

[0033] Figure 5 The door and window mounting piece structure schematic diagram of the utility model shows;

[0034] Figure 6 The combination enlarged schematic diagram of the fixed pressing piece and the door and window mounting piece of the utility model shows;

[0035] Label annotation: fixed seat 1, sliding groove 11, resistance sliding block 12, sliding friction block 121, sliding fixed block 122, connecting groove 123, hinged hole 124, rotation mark 125, resistance adjusting bolt 13, eccentric bolt 14, fixed piece 15, adjusting pressing piece 16, rubber washer 161, reinforcing part 17, first connecting piece 2, second connecting piece 3, limiting notch 31, sealing adjusting bolt 32, third connecting piece 4, door and window mounting piece 5, horizontal installation part 51, lightening groove 511, bending piece 512, vertical installation part 52, vertical adjusting hole 521, vertical adjusting bolt 522, fixed pressing piece 53, limiting groove 531, placing groove 54, limiting block 541. Specific implementation

[0036] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0037] As Figures 1 to 6The illustrated limiting resistance hinge includes a fixed seat 1, a first connecting piece 2, a second connecting piece 3, a third connecting piece 4 and a door and window mounting member 5. The first connecting piece 2 is riveted with the second connecting piece 3 and the bottom end of the door and window mounting member 5 respectively. The third connecting piece 4 is riveted with one end of the second connecting piece 3 and one end of the door and window mounting member 5 close to the second connecting piece 3. The side of the fixed seat 1 away from the second connecting piece 3 is provided with a sliding groove 11. The sliding groove 11 is provided with a resistance sliding block 12. The resistance sliding block 12 can be in contact with the fixed seat 1. The resistance sliding block 12 is provided with a resistance adjusting bolt 13. The resistance adjusting bolt 13 can adjust the friction of the resistance sliding block 12 relative to the fixed seat 1. The first connecting piece 2 is hinged on one side of the resistance sliding block 12. The second connecting piece 3 is provided with a limiting notch 31. The side of the fixed seat 1 close to the limiting notch 31 is provided with an eccentric bolt 14. The rotation of the eccentric bolt 14 can limit the maximum opening angle of the hinge. The rotation of the resistance adjusting bolt 13 can adjust the friction of the resistance sliding block 12 relative to the fixed seat 1, the wind resistance of the door and window, and the damping effect of the door and window. The eccentric bolt 14 is arranged on the side of the fixed seat 1 away from the first connecting piece 2. The limiting notch 31 on the second connecting piece 3 cooperates with the eccentric bolt 14 to limit the maximum opening angle of the hinge. Compared with the prior art, the resistance sliding block 12 and the eccentric bolt 14 respectively realize resistance adjustment and angle adjustment, so that the stability of the hinge is higher. When the narrower side of the eccentric bolt 14 is close to the second connecting piece 3, the maximum opening angle of the hinge is 180°. When the wider end is rotated to the side of the second connecting piece 3, the contact part of the limiting notch 31 and the eccentric bolt 14 gradually increases. When the widest part is embedded in the limiting notch, the maximum opening angle of the hinge is 90°. The friction of the resistance sliding block 12 relative to the fixed seat 1 can be adjusted to improve the wind resistance of the hinge. The limiting notch 31 and the eccentric bolt 14 can be used to limit the maximum opening angle of the hinge. The resistance and angle of the hinge can be adjusted stably.

[0038] The resistance sliding block 12 comprises a sliding friction block 121 and a sliding fixed block 122, the sliding fixed block 122 is provided with a connecting groove 123 near one end of the first connecting piece 2, the connecting groove 123 is provided with a hinge hole 124 in the middle, the first connecting piece 2 is connected to the connecting groove 123 through the hinge hole 124, the fixed seat 1 is provided with a fixed piece 15 at the connecting position of the second connecting piece 3 and the eccentric bolt 14 away from the door and window mounting part 5, the fixed piece 15 can stably connect the second connecting piece 3 and the eccentric bolt 14, the resistance sliding block 12 is provided with a rotating mark 125 near one side of the resistance adjusting bolt 13. The resistance sliding block 12 is divided into the sliding friction block 121 and the sliding fixed block 122, the hinge hole 124 of the first connecting piece 2 on the connecting groove 123 is hinged to the resistance sliding block 12 and preliminarily hinged the sliding friction block 121 and the sliding fixed block 122, and then the friction force of the sliding friction block 121 and the sliding fixed block 122 to the fixed seat 1 can be quickly adjusted through the resistance adjusting bolt 13, so as to adjust the bearing capacity of the hinge to the wind force and improve the adaptability of the hinge. In addition, the eccentric bolt 14 is provided with the fixed piece 15 at the bottom and the second connecting piece 3, the second connecting piece 3 is hinged to the fixed seat 1 at the same time, and the fixed piece 15 is fixed, when the eccentric bolt 14 is rotated, the fixed piece 15 can effectively prevent the eccentric bolt 14 from being separated from the fixed seat 1, and the service life of the angle limiting capacity of the eccentric bolt 14 and the limiting groove 531 is improved.

[0039] The door and window mounting part 5 comprises a horizontal mounting part 51 and a vertical mounting part 52, the horizontal mounting part 51 and the vertical mounting part 52 are integrally formed, the first connecting piece 2 is hinged to the intersection of the horizontal mounting part 51 and the vertical mounting part 52, and a plurality of weight reduction grooves 511 are formed in the side of the horizontal mounting part 51 away from the vertical mounting part 52. The two parts of the door and window mounting part 5 ensure the high bearing capacity of the hinge and the concealment of the door and window mounting part 5 in the door and window, and the weight bearing hole eccentrically arranged in the vertical mounting part 52 and the weight bearing bolt matched with the weight bearing hole effectively disperse the weight of the door and window, improve the uniformity of the bearing distribution and the overall stability. The multiple connecting pieces cooperate to effectively ensure the opening and closing capacity of the hinge, and the weight reduction grooves 511 on the bottom surface of the horizontal mounting part 51 reduce the overall weight of the door and window mounting part 5, which ensures the bearing capacity of the hinge, reduces the consumption of production materials and the production cost.

[0040] The vertical mounting portion 52 is provided with a vertical adjusting hole 521 at the top, and a vertical adjusting bolt 522 is arranged in the vertical adjusting hole 521; the first connecting plate 2 and the second connecting plate 3 are hinged to a sealing adjusting bolt 32, which can adjust the sealing degree of the hinge. The door and window mounting piece 5 can be adjusted in a certain position in the vertical direction through the vertical adjusting bolt 522, and the opening and closing smoothness of the hinge is adjusted in combination with the sealing adjusting bolt 32 of the first connecting plate 2 and the second connecting plate 3, so that the installation position of the hinge can be adaptively adjusted to achieve the best installation and opening and closing performance.

[0041] The horizontal mounting portion 51 is provided with an anti-rebound structure capable of abutting against the third connecting plate 4 at the end away from the first connecting plate 2, and the anti-rebound structure is a bent plate 512 extending downward on the side of the horizontal mounting portion 51 away from the third connecting plate 4, which can abut against the third connecting plate 4. When the hinge is closed, the bent plate 512 can limit the displacement of the door and window mounting piece 5 towards the end of the third connecting plate 4, and further limit the displacement of the whole hinge towards the end of the third connecting plate 4. By arranging the anti-rebound structure, the door and window mounting piece 5 is installed in the sash, the fixed seat 1 is installed in the window frame, and when the user closes the sash, the door and window mounting piece 5 drives the first connecting plate 2, the second connecting plate 3 and the third connecting plate 4 to rotate and fold, so as to make the second connecting plate 3 slide along the slide rail. In the folding process, the anti-rebound structure gradually approaches the third connecting plate 4 until abutting, thereby pushing the third connecting plate 4 to complete the rotating and folding action. After closing the sash, the position of the third connecting plate 4 is limited by the anti-rebound mechanism, thereby preventing the sash from shaking back and forth due to strong wind, and preventing the phenomenon of rebounding, and avoiding air leakage and air leakage, thereby improving the sealing performance. Through the bent plate 512, when the sash is closed, the bent plate 512 on the door and window mounting piece 5 abuts against the third connecting plate 4, thereby limiting the position, avoiding the sash from shaking back and forth due to strong wind, and improving the use effect.

[0042] The bottom surface of the fixed seat 1 is provided with an adjusting pressing plate 16 away from one end of the second connecting plate 3 hinged part, and the fixed seat 1 is also provided with an adjusting pressing plate 16 between the second connecting plate 3 and the sliding groove 11, the adjusting pressing plate 16 is rotatably arranged on the fixed seat 1, the adjusting pressing plate 16 is riveted with the fixed seat 1, and a rubber gasket 161 is arranged between the adjusting pressing plate 16 and the fixed seat 1, and the rubber gasket 161 is used for spacing the adjusting pressing plate 16 and the fixed seat 1. The adjusting pressing plate 16 can be rotatably arranged on the fixed seat 1 through an internal hexagonal screw, after the fixed seat 1 is inserted into the window frame connecting profile, an internal hexagonal wrench is used to rotate the internal hexagonal screw, the adjusting pressing plate 16 is driven to rotate, the two end protruding parts of the adjusting pressing plate 16 fix the fixed seat 1 and the window frame connecting profile, and the convenient installation effect is realized. The rubber gasket 161 between the adjusting pressing plate and the fixed seat 1 effectively alleviates the collision and friction therebetween, the elasticity of the rubber gasket 161 can also retain a movable gap, and the convenient installation effect is not affected.

[0043] The fixed seat 1 is provided with a reinforcing part 17 perpendicular to the horizontal end surface of the fixed seat 1 away from one end of the second connecting plate 3, the reinforcing part 17 is integrally formed with the fixed seat 1, the reinforcing part 17 is provided with an adjusting pressing plate 16 away from one end of the fixed seat 1, and the adjusting pressing plate 16 is rotatably arranged on the reinforcing part 17. The reinforcing part 17 is arranged perpendicularly to the fixed seat 1, the reinforcing part 17 can be fixed to the side of the installation position when the hinge is installed, the strength and stability of the hinge are increased, the fixed seat 1 is effectively prevented from shaking, and the stability of the hinge is improved.

[0044] The fixed seat 1 is provided with a reinforcing part 17 perpendicular to the horizontal end surface of the fixed seat 1 away from one end of the second connecting plate 3, the reinforcing part 17 is integrally formed with the fixed seat 1, the reinforcing part 17 is provided with an adjusting pressing plate 16 away from one end of the fixed seat 1, and the adjusting pressing plate 16 is rotatably arranged on the reinforcing part 17. The reinforcing part 17 is arranged perpendicularly to the fixed seat 1, the reinforcing part 17 can be fixed to the side of the installation position when the hinge is installed, the strength and stability of the hinge are increased, the fixed seat 1 is effectively prevented from shaking, and the stability of the hinge is improved.

[0045] The above-mentioned embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of deformations and improvements can be made, and these all belong to the protection range of the utility model.

Claims

1. A limit resistance hinge, comprising a fixed seat, a first connecting sheet, a second connecting sheet, a third connecting sheet and a door and window mounting piece, the first connecting sheet is riveted with the second connecting sheet and the bottom end of the door and window mounting piece respectively, the third connecting sheet is riveted with the end of the second connecting sheet and the end of the bottom of the door and window mounting piece close to the second connecting sheet, and the side away from the second connecting sheet of the fixed seat is provided with a sliding groove, characterized in that: The sliding chute is internally provided with a resistance sliding block capable of abutting against the fixed seat, the resistance sliding block is provided with a resistance adjusting bolt, the resistance adjusting bolt can adjust the friction of the resistance sliding block relative to the fixed seat, the first connecting piece is hinged on one side of the resistance sliding block, the second connecting piece is provided with a limiting gap, the fixed seat is provided with an eccentric bolt on the side close to the limiting gap, and the eccentric bolt is rotated to limit the maximum opening and closing angle of the hinge.

2. The check and resistance hinge according to claim 1, characterized in that: The resistance sliding block comprises a sliding friction block and a sliding fixed block, the sliding fixed block is provided with a connecting groove on the side close to the first connecting piece, the middle of the connecting groove is provided with a hinge hole, the first connecting piece is connected in the connecting groove through the hinge hole, the fixed seat is provided with a fixed piece on the side away from the door and window mounting member and connected with the eccentric bolt, the fixed piece can stably connect the second connecting piece and the eccentric bolt, and the resistance sliding block is provided with a rotation mark on the side close to the resistance adjusting bolt.

3. The check and resistance hinge of claim 1, wherein: The door and window mounting member comprises a horizontal mounting part and a vertical mounting part, the horizontal mounting part and the vertical mounting part are integrally formed, the first connecting piece is hinged at the joint of the horizontal mounting part and the vertical mounting part, and the horizontal mounting part is provided with a plurality of lightening grooves on the side away from the vertical mounting part.

4. The check and resistance hinge according to claim 3, characterized in that: The vertical mounting part is provided with a vertical adjusting hole at the top, and a vertical adjusting bolt is arranged in the vertical adjusting hole; the first connecting piece and the second connecting piece are hinged with a sealing adjusting bolt, and the sealing adjusting bolt can adjust the sealing degree of the hinge.

5. The check and resistance hinge according to claim 4, characterized in that: The horizontal mounting part is provided with an anti-rebound structure capable of abutting against the third connecting piece on the end away from the first connecting piece, the anti-rebound structure comprises a bending piece extending downward on the side of the horizontal mounting part away from the third connecting piece, the bending piece can abut against the third connecting piece, and the bending piece can limit the displacement of the door and window mounting member to the end of the third connecting piece when the hinge is closed, thereby limiting the displacement of the whole hinge to the end of the third connecting piece.

6. Check restraint hinge according to any of claims 1 to 5, characterized in that: The bottom surface of the fixed seat is provided with an adjusting pressing piece on the end away from the hinging position of the second connecting piece, and the fixed seat is also provided with an adjusting pressing piece between the second connecting piece and the sliding chute, the adjusting pressing pieces are rotationally arranged on the fixed seat, the adjusting pressing pieces are riveted with the fixed seat, and a rubber gasket is arranged between the adjusting pressing pieces and the fixed seat.

7. The check and resistance hinge according to claim 6, characterized in that: The fixed seat is provided with a reinforcing member perpendicular to the horizontal end surface of the fixed seat on the end close to the second connecting piece, the reinforcing member is integrally formed with the fixed seat, the reinforcing member is provided with an adjusting pressing piece on the end away from the fixed seat, and the adjusting pressing piece is rotationally arranged on the reinforcing member.

8. The check and resistance hinge according to claim 7, characterized in that: The door and window mounting member is provided with a fixed pressing piece rotationally arranged on the end away from the first connecting piece, the door and window mounting member is also provided with a placing groove for accommodating the fixed pressing piece, two limiting blocks arranged in a diagonal manner are fixed on the two sides in the placing groove, and the fixed pressing piece is provided with a limiting groove abutting against the limiting blocks on the two sides.

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