WO2020034348A1

WO2020034348A1 - Damping hinge

Info

Publication number: WO2020034348A1
Application number: PCT/CN2018/108925
Authority: WO
Inventors: 吴腾庆; 吴积庆
Original assignee: 广东金利祥兴五金精密制造有限公司
Priority date: 2018-08-15
Filing date: 2018-09-30
Publication date: 2020-02-20

Abstract

A damping hinge, comprising a hinge cup (1), a hinge arm (2), a torsion spring (3), a first connecting piece (4), a second connecting piece (5), and a damping device (6). One ends of the first connecting piece (4) and the second connecting piece (5) are jointly hinged to the hinge cup (1), and the other ends of the first connecting piece (4) and the second connecting piece (5) are separately hinged to one end of the hinge arm (2); the torsion spring (3) is sleeved at a position where the first connecting piece (4) and the hinge arm (2) are hinged; the damping device (6) is disposed in the hinge arm (2); the other end of the second connecting piece (5) is in hooked connection with the damping device (6) so that the damping device (6) generates a buffering resistance along with rotation of the second connecting piece (5). Connection between the damping device and other parts is simple, the structure is compact and steady, installation is more convenient, and the buffering effect is better, so that a door plate is closed slowly and gently, and thus impact noise of the door plate and a door cabinet is eliminated. Furthermore, the damping device has a buffering resistance limiting function, which can be enabled when the door plate cannot be closed or the closing speed is too slow resulting from the hinge being used for a long time, the torsion spring being fatigued, or an insufficient door closing force being caused by the heavy door plate.

Description

Damping hinge

This application declares the priority of the Chinese patent application filed on August 15, 2018 with the application number CN2018213164380, with the name "a type of damping hinge" and the same day with the application number CN2018109311589, with the name "a type of damping hinge" Right, the entire content of said Chinese patent application is incorporated in this application by reference.

Technical field

The invention relates to a hinge, in particular to a damping hinge.

Background technique

The damping hinge relies on a brand-new technology to adapt to the closing speed of the door. It effectively avoids the collision of the cabinet door with the restoring force received during the opening and closing process of the furniture product. The door can also be closed gently with the force of closing the door. Quiet and comfortable environment, so often used in modern furniture. The damping hinge is usually provided with a damping device and other connecting parts, and the effect of the door closing buffer is realized by the damping device. The connection methods of the existing damping device and other connecting members are still very complicated, there are many connecting accessories, the structure is not stable enough, and the cushioning effect is not good.

Summary of the Invention

In view of the shortcomings of the prior art, the object of the present invention is to provide a damping hinge with stable structure and good cushioning effect.

In order to achieve the above objective, the present invention is achieved through the following technical solutions:

A damping hinge includes a hinge cup, a hinge arm, a torsion spring, a first connection member, a second connection member, and a damping device. One end of the first connection member and the second connection member is hinged with the hinge cup. The other ends of the one connecting piece and the second connecting piece are hinged to one end of the hinge arm respectively, the torsion spring is sleeved at the hinge between the first connecting piece and the hinge arm, the damping device is arranged in the hinge arm, and the second The other end of the connecting member is hooked with the damping device and causes the damping device to generate a cushioning resistance as the second connecting member rotates.

Further, an end of the second connecting member near the damping device is provided with a hook hook portion, and the damping device is provided with a convex portion hooked with the hook hook portion.

Further, the damping device includes an oil cylinder sliding seat and an oil cylinder, a bottom of the oil cylinder sliding seat is provided with a mounting groove for placing the oil cylinder, a first opening of the mounting groove near the torsion spring, and an end of the oil cylinder is disposed At the first opening and in contact with the outer edge of the coil of the torsion spring, the other end of the cylinder is in contact with the wall of the mounting groove opposite to the first opening, and the side of the cylinder is installed on both sides of the first opening The groove walls conflict.

Further, the damping device includes an oil cylinder sliding seat and an oil cylinder, a bottom of the oil cylinder sliding seat is provided with a mounting groove for placing the oil cylinder, a first opening of the mounting groove near the torsion spring, and an end of the oil cylinder is disposed At the first opening and in contact with the outer edge of the coil of the torsion spring, the other end of the cylinder is in contact with the wall of the mounting groove opposite to the first opening, and the side of the cylinder is installed on both sides of the first opening The groove walls interfere with each other, and the protrusions are arranged on the oil cylinder slide seat.

Further, a supporting shaft is provided at the bottom of the damping device, and the supporting shaft is riveted with both sides of the hinge arm.

Further, the front end of the piston rod of the oil cylinder is fixedly provided with an abutment piece.

Further, a limiting portion is provided on an end of the oil cylinder slide opposite to the convex portion, the damping hinge further includes at least one switch, and a first leg and a second leg are provided at the bottom of the switch, At least one side of the hinge arm is correspondingly provided with a guide hole and a mounting hole; after the first column foot is pressed into the guide hole and turned upward, it is on the same horizontal line as the convex portion and the limit portion. At this time, the hinge is fully opened. The first upright leg is located between the raised portion and the limit portion. At this time, the hinge is completely closed, the first upright leg is located on the right side of the limit portion and restricts the damping device from generating cushioning resistance. Turning down the guide hole is not on the same horizontal line as the convex portion and the limiting portion.

Further, the bottom of the first leg and the bottom of the stopper are opposite slope structures. During the hinge closing process, the slanted surface of the stopper presses the slanted surface of the first leg of the stop to force the stopper to pass through the first Post feet.

Further, a second opening is provided at the bottom of the second upright leg and a step is provided outside the bottom.

Further, one end of the first connecting member and the second connecting member are hinged with the hinge cup through a U-shaped needle.

Compared with the prior art, the damping device of the present invention is simple in connection with other spare parts, has a compact and stable structure, is more convenient to install, and has a better cushioning effect. The door panel is closed slowly and softly, and the impact sound between the door panel and the door cabinet is eliminated. At the same time, the invention has the function of limiting the buffer resistance. When the hinge is used for too long, the torsion spring is fatigued or the door is too heavy, the door cannot be closed or the closing speed is too slow. Ensure the strength and speed of closing the door.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the overall structure of the present invention;

2 is a schematic diagram of a half-section structure of the present invention;

3 is a schematic diagram of an exploded structure of the present invention;

FIG. 4 is a schematic structural diagram of a cylinder slide seat of the present invention; FIG.

5 is a schematic structural diagram of an oil cylinder of the present invention;

6 is a schematic structural diagram of a switch of the present invention;

7 is a partially enlarged view of a fully opened state of the present invention;

8 is a partial enlarged view of a state of the process from opening to closing of the present invention;

9 is a partially enlarged view of a fully closed state of the present invention;

10 is a state diagram of a closing operation process after the buffer function is restricted according to the present invention;

11 is a state diagram of an opening action process after the buffer function is restricted according to the present invention;

FIG. 12 is a state diagram of a closing action process when the buffer function of the present invention is not limited;

FIG. 13 is a state diagram of an opening action process when the buffer function is not limited according to the present invention; FIG.

In the picture: 1, hinge cup; 2, hinge arm; 21, guide hole; 22, mounting hole; 3, torsion spring; 4, first connecting piece; 5, second connecting piece; 51, curved hook portion; 6, Damping device; 61, cylinder slide; 611, mounting groove; 612, first opening; 613, raised portion; 614, limit portion; 62, oil cylinder; 621, cylinder tube; 622, spring; 623, piston; 624 Piston rod; 625; Abutment piece; 7. Switch; 71. First column foot; 72; Second column foot; 721; Second opening; 722; Step; 8. U-shaped needle; 9. Support shaft.

detailed description

The present invention will be further described below with reference to the drawings and specific embodiments:

As shown in FIGS. 1 to 3, the damping hinge according to the present invention includes a hinge cup 1, a hinge arm 2, a torsion spring 3, a first connecting member 4, a second connecting member 5, a damping device 6, and a first connecting member 4. One end of the second connecting piece 5 is hinged with the hinge cup 1 through a U-shaped pin 8; the other ends of the first connecting piece 4 and the second connecting piece 5 are hinged with one end of the hinge arm 2 through a pin shaft, respectively. The two sides of the arm 2 are riveted, the torsion spring 3 is sleeved on the hinge pin of the first connecting member 4 and the hinge arm 2, and the damping device 6 is disposed in the hinge arm 2. The other end of the second connecting member 5 is hooked to the damping device 6 and causes the damping device 6 to generate a cushioning resistance as the second connecting member 5 rotates. Specifically, the end of the second connecting member 5 near the damping device 6 is fixedly provided. The hook portion 51 and the damping device 6 are fixedly provided with a protruding portion 613 connected to the hook portion 51.

The damping device 6 includes an oil cylinder slide 61 and an oil cylinder 62. The oil cylinder 62 includes a cylinder barrel 621, a spring 622, a piston 623, and a piston rod 624 installed in the cylinder barrel 621. One end of the piston 623 is connected to the piston rod 624, and the other end thereof is in contact with the upper end of the spring 622. The piston rod 624 extends out of the cylinder barrel. 621 outside. The bottom of the oil cylinder slide 61 is provided with a mounting groove 611 for placing the oil cylinder 62. An end of the mounting groove 611 near the torsion spring 3 is provided with a first opening 612. One end of the oil cylinder 62 is placed at the first opening 612 and is connected with the spring of the torsion spring 3. The outer edge of the ring is in conflict, the other end of the oil cylinder 62 is in contact with the groove wall of the mounting groove 611 opposite to the first opening 612, and the side surface of the oil cylinder 62 is in contact with the groove wall of the installation groove 611 on both sides of the first opening 612. When the bottom of the oil cylinder 62 is placed at the first opening 612 and is in contact with the outer edge of the coil of the torsion spring 3, the piston rod of the oil cylinder 62 is in contact with the groove wall of the mounting groove 611 opposite to the first opening 612; When the piston rod of 62 is placed at the first opening 612 and is in contact with the outer edge of the coil of the torsion spring 3, the bottom of the oil cylinder 62 is in contact with the groove wall of the mounting groove 611 opposite to the first opening 612. In order to increase the force receiving area of the front end of the piston rod 624, an abutment piece 625 may be fixedly connected to the front end of the piston rod 624, as shown in FIG. The mounting groove 611 may be designed as a U-shaped groove that is open at one side and the bottom, that is, the groove shape shown in FIG. 4. The convex portion 613 hooked with the curved hook portion 51 of the second connecting member 5 is specifically fixed on the cylinder slide 61, and a limiting portion 614 is provided on the cylinder slide 61 at an end opposite to the convex portion 613.

In order to prevent the cylinder slide 61 and the cylinder 62 from falling out of the hinge arm 2, a supporting shaft 9 is provided at the bottom of the damping device 6 (ie, close to the groove surface of the mounting groove 611), and the supporting shaft 9 and both sides of the hinge arm 2 Riveting.

The present invention also includes at least one switch 7. As shown in FIG. 6, the bottom of the switch 7 is provided with a first leg 71 and a second leg 72, and at least one side of the hinge arm 2 is correspondingly provided with a guide hole 21 and a mounting hole 22 . The first upright leg 71 is pressed into the guide hole 21, the second upright leg 72 is pressed into the mounting hole 22, and the switch 7 can be rotated after being pushed in. The first upright leg 71 is pushed into the guide hole 21 and turned upward to be convex. The rising portion 613 and the limiting portion 614 are on the same horizontal line. At this time, the first column foot 71 is located between the convex portion 613 and the limiting portion 614 when the hinge is fully opened. At this time, the first column foot 71 is located at the limit when the hinge is completely closed. The right side of the position part 614 and restricts the damping device 6 from generating cushioning resistance; the first column leg 71 turns downward along the guide hole 21 and is not on the same horizontal line as the convex part 613 and the limit part 614; the hinge arm 2 can be provided Corresponding "off" and "open" flags. The first pillar leg 71 and the bottom of the limiting portion 614 are opposite slope structures. During the hinge closing process, the slope structure of the limiting portion 614 presses the slope structure of the first pillar leg 71 to force the limiting portion 614 to pass through the first pillar leg. 71. A second opening 721 is provided at the bottom of the second upright leg 72 and a stepped portion 722 is provided on the outside of the bottom to facilitate the second upright leg 72 to be easily pressed into the installation hole 22 and prevent the second upright leg 72 from coming out of the installation hole 22. In order to ensure the effect of limiting the buffering resistance, a switch 7 may be provided on each side of the hinge arm 2.

As shown in Figure 7-11, before the hinge cup 1 is closed, the second column foot 72 of the switch 7 is used as the axis to turn the switch 7 in the off direction, so that the first column foot 71 of the switch 7 and the cylinder slide 61 The raised portion 613 and the limiting portion 614 are on the same horizontal line. The closing and rotation of the hinge cup 1 drives the cylinder slider 61 to move toward the head of the hinge arm 2. When the inclined structure of the limiting portion 614 of the cylinder slider 61 and the first column When the bevel structure at the bottom of the foot 71 contacts, the moving pulling force of the oil cylinder slide 61 presses the first column to rise outward, forcing the limit portion 614 to pass through. After the limit portion 614 passes, the switch 7 presses outward to release the first column. The foot 71 resets inward, and the bottom thereof is lower than the bottom of the limiting portion 614 of the cylinder slide 61. The rear side of the limiting portion 614 is resisted by the first upright leg 71. When the hinge cup 1 starts the opening action, the first upright leg 71 The cylinder slide 61 is restricted from moving toward the tail of the hinge arm 2, but the hinge cup 1 can still be opened. However, when the hinge cup 1 starts the closing action again, the cushioning function of the hinge has been limited. At this time, the bend on the second connecting member 5 The hook portion 51 rotates in the arm without receiving the cushioning resistance of the cylinder slide 61. The lifting portion 613 is separated, and the strength and speed of closing the hinge cup 1 are not affected. To restore the buffer function, you can turn the switch 7 in the open direction. At this time, the first leg 71 of the switch 7 completely avoids the limiting portion 614 of the cylinder slide 61, and does not interfere with the normality of the cylinder slide 61. Damping movement and reset movement. When the hinge is used for a long time, the torsion spring 3 is fatigued, or the door panel is not strong enough to close the door, resulting in the door panel not closing or the closing speed is too slow, the switch 7 can be turned off to ensure the strength and speed of closing the door.

Hinge closing action process:

As shown in FIG. 12, the hinge cup 1 is fixed on the door panel, and the hinge arm 2 is fixed inside the door cabinet. When the hinge cup 1 is rotated about 30 degrees in the closing direction, the torsion spring 3 drives the hinge cup 1 to rotate in the closing direction, and the hinge The cup 1 drives the first connecting member 4 and the second connecting member 5 to rotate. When the second connecting member 5 rotates in the closing direction with the hinge pin axis as the axis, the hook portion 51 on the second connecting member 5 will abut against the cylinder. The raised portion 613 on the slide base 61 drives the oil cylinder slide base 61 toward the head of the hinge arm 2. At the same time, the oil cylinder 62 installed in the installation groove 611 of the oil cylinder slide base 61 is supported by the outer side of the cylinder barrel, and the bottom and twist The coils of the spring 3 are in conflict, so that the resistance of the oil cylinder 62 is transmitted to the inner side wall of the oil cylinder slide 61 through the piston rod, which slows down the moving speed of the oil cylinder slide 61, and at the same time, the slowed moving speed of the oil cylinder slide 61 passes through the second connection. The piece 5 slows down the rotation speed of the hinge cup 1 and makes the door panel close slowly and softly, eliminating the impact sound of the door panel and the door cabinet.

Hinge opening action process:

As shown in FIG. 13, when the hinge cup 1 rotates in the opening direction, the second connecting member 5 rotates in the opening direction with the hinge pin axis as the axis, and the hook portion 51 on the second connecting member 5 will leave the cylinder slide 61. At the same time, the convex portion 613 and the spring force of the spring in the cylinder 62 of the cylinder causes the piston rod to be pushed out to drive the cylinder slide 61 toward the tail of the hinge arm 2. When the hinge cup 1 is opened, the hinge returns to the state before the closing action.

For those skilled in the art, according to the above technical solutions and concepts, various other corresponding changes and modifications can be made, and all these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims

A damping hinge includes a hinge cup, a hinge arm, a torsion spring, a first connection member, a second connection member, and a damping device. One end of the first connection member and the second connection member is hinged with the hinge cup. The other ends of the one connecting piece and the second connecting piece are hinged to one end of the hinge arm, the torsion spring is sleeved at the hinge between the first connecting piece and the hinge arm, and the damping device is arranged in the hinge arm, which is characterized in that: The other end of the second connecting member is hooked with the damping device and causes the damping device to generate a cushioning resistance as the second connecting member rotates.
The damping hinge according to claim 1, wherein an end of the second connecting member near the damping device is provided with a curved hook portion, and the damping device is provided with a protruding portion hooked with the curved hook portion.
The damping hinge according to claim 1, characterized in that: the damping device comprises an oil cylinder sliding seat and an oil cylinder, and a bottom of the oil cylinder sliding seat is provided with a mounting groove for placing the oil cylinder, and the mounting groove is provided near an end of the torsion spring. There is a first opening, one end of the oil cylinder is placed at the first opening and is in contact with the outer edge of the coil of the torsion spring, and the other end of the oil cylinder is in contact with the wall of the installation groove opposite to the first opening. The side of the oil cylinder is in contact with the wall of the mounting groove on both sides of the first opening.
The damping hinge according to claim 2, characterized in that: the damping device comprises an oil cylinder sliding seat and an oil cylinder, a bottom of the oil cylinder sliding seat is provided with a mounting groove for placing the oil cylinder, and the mounting groove is provided near an end of the torsion spring. There is a first opening, one end of the oil cylinder is placed at the first opening and is in contact with the outer edge of the coil of the torsion spring, and the other end of the oil cylinder is in contact with the wall of the installation groove opposite to the first opening. The side of the oil cylinder is in contact with the wall of the installation groove on both sides of the first opening, and the protrusion is provided on the oil cylinder slide seat.
The damping hinge according to claim 4, wherein a supporting shaft is provided at the bottom of the damping device, and the supporting shaft is riveted to both sides of the hinge arm.
The damping hinge according to claim 4 or 5, wherein the front end of the piston rod of the oil cylinder is fixedly provided with an abutment piece.
The damping hinge according to claim 6, characterized in that: a limit portion is provided on an end of the cylinder slide opposite to the convex portion, and the damping hinge further comprises at least one switch, and a bottom of the switch is provided. There are a first upright leg and a second upright leg, and at least one side of the hinge arm is provided with a guide hole and a mounting hole correspondingly; after the first upright leg is pressed into the guide hole and turned upward, it is connected with the convex portion and the limit portion. On the same horizontal line, when the hinge is fully opened, the first column foot is located between the convex portion and the limit portion, and at this time, the first column foot is located on the right side of the limit portion and the damping is restricted The device generates cushioning resistance; when the first column foot rotates downward along the guide hole, it is not on the same horizontal line as the convex portion and the limiting portion.
The damping hinge according to claim 7, characterized in that: the first leg of the leg and the bottom of the stopper portion are opposite inclined surfaces, and the slanting structure of the stopper portion presses the first leg of the leg during the hinge closing process. The beveled structure makes the stop force pass through the first column foot.
The damping hinge according to claim 8, wherein a second opening is provided at the bottom of the second upright leg and a step is provided at the outside of the bottom.
The damping hinge according to claim 1, wherein one end of the first connecting member and the second connecting member are hinged with the hinge cup through a U-shaped needle.