American hinge

Abstract

An American hinge comprises a hinge cup and a hinge arm, a concave containing area is arranged in the hinge cup, the hinge arm is installed in the containing area in a hinged mode through a first pin shaft, a buffer is further installed in the containing area and makes contact with the hinge arm, double torsional springs are further installed in the containing area, and the double torsional springs make contact with the hinge arm. A first spring body and a second spring body in the double torsion spring are located on the two sides of the buffer, a connecting arm between the first spring body and the second spring body stretches across the buffer, a second pin shaft is transversely installed in the containing area, and the connecting arm is clamped and fixed between the second pin shaft and the buffer. The two sides of the hinge arm extend outwards to form lug bases, and the first supporting leg and the second supporting leg of the double-torsion spring are pressed on the lug bases on the two sides of the hinge arm respectively to apply elastic force to the hinge arm. The hinge has the advantages that the torsion spring is ingeniously arranged in the hinge cup, and the surface of the hinge cup is covered with the decorative cover, so that the torsion spring, the buffer and other components are all hidden in the internal structure of the hinge.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to an American hinge. Background Art

[0002] A hinge is a mechanical device commonly used to connect two solid objects and allow them to rotate or pivot. It is widely used in furniture, doors, windows, and other applications. Among all hinge types, American hinges are the mainstream choice in the home furnishing industry, especially for cabinet doors, wardrobe doors, and other furniture panels, due to their ease of installation, stable structure, and long service life.

[0003] Existing American-style hinges typically consist of a hinge cup, hinge arm, pin, torsion spring, and buffer. The hinge cup is typically embedded inside the door panel and connected to a base mounted on the cabinet body via the hinge arm, enabling the door panel to open and close. In this type of American-style hinge, the torsion spring, a key component providing the spring force, is typically located outside the hinge cup. The hinge arm is connected to the hinge cup via a pin and is subject to the spring force.

[0004] However, the existing American hinges have a significant problem: the exposed torsion spring makes the overall appearance of the hinge less neat and aesthetically pleasing. Since torsion springs are typically made of metal, being exposed on the outside of the hinge not only makes them susceptible to dust accumulation and corrosion, but can also affect the overall aesthetics of the furniture. This is particularly detrimental to the design requirements of some high-end home furnishings. To address this issue, some existing technologies attempt to conceal the external torsion spring by adding decorative covers or other shielding structures. However, this often increases the complexity and production cost of the hinge and can also affect the hinge's normal functionalities, such as flexibility and durability. Therefore, further improvements are necessary. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an American hinge with a simple structure and easy use. By arranging the torsion spring inside the hinge cup, the hinge maintains its original function while having a neater appearance.

[0006] The purpose of the utility model is achieved in the following manner: an American hinge, which includes a hinge cup and a hinge arm, wherein a concave accommodating area is provided in the hinge cup, and the hinge arm is hingedly mounted in the accommodating area via a first pin shaft, and a buffer is further mounted in the accommodating area, and the buffer contacts the hinge arm. When the hinge is closed, the buffer is subjected to force on the hinge arm, thereby playing a buffering role when the hinge arm is closed. The utility model is characterized in that a double torsion spring is further mounted in the accommodating area, wherein the first spring body and the second spring body of the double torsion spring are located on both sides of the buffer, and a connecting arm between the first spring body and the second spring body is arranged across the buffer, and a second pin shaft is transversely mounted in the accommodating area to clamp and fix the connecting arm between the second pin shaft and the buffer;

[0007] Ear seats are extended outwardly on both sides of the hinge arm, and the first supporting leg and the second supporting leg of the double torsion spring are respectively pressed on the ear seats on both sides of the hinge arm to apply elastic force on the hinge arm.

[0008] Furthermore, a buffer seat is fixedly installed in the accommodating area, and a mounting hole is provided on the buffer seat. The cylinder part of the buffer is inserted and fixed in the mounting hole.

[0009] Furthermore, a slider is provided on the buffer seat, the piston rod of the buffer is connected to the slider, and a contact surface is provided on the top of the slider to contact the hinge arm to transmit power.

[0010] Furthermore: the bottom of the sliding block is provided with buckles extending downward to the left and right, and correspondingly, the buffer seat is provided with guide grooves, and the buckles are slidably installed in the guide grooves.

[0011] Furthermore, concave receiving grooves are provided at positions on both sides of the slider corresponding to the first spring body and the second spring body.

[0012] Furthermore: the surface of the accommodating area is covered with a decorative cover, which hides the buffer and the double torsion springs in the accommodating area.

[0013] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0014] 2. This new design cleverly incorporates the torsion spring inside the hinge cup, and a decorative cover covers the cup surface, concealing the torsion spring, buffer, and other components within the hinge's internal structure. Compared to traditional American hinges, where the torsion spring is exposed, this design significantly enhances the hinge's overall appearance, making it cleaner and more aesthetically pleasing, meeting the high aesthetic demands of modern home furnishings.

[0015] 3. By integrating the torsion spring into the hinge cup, the present invention effectively utilizes the space inside the hinge, making the hinge structure more compact. Compared to the space occupied by the exposed torsion spring in the prior art, the present invention not only saves installation space but also avoids the installation restrictions that may be caused by the exposed torsion spring.

[0016] 4. The present invention hides key components such as torsion springs and buffers inside the hinge and covers them with a decorative cover, thereby effectively preventing the influence of external environmental factors such as dust and moisture on these components, extending the service life of the hinge and improving durability.

[0017] 5. The buffer provided in this utility model is in direct contact with the hinge arm, effectively absorbing the closing impact force when the hinge is closed, thus providing a buffering effect. Furthermore, the dual torsion spring configuration increases the stability of the hinge arm when closed, avoiding the problem of uneven force applied to a single spring that can cause the hinge to open and close unsmoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the general assembly effect diagram of the utility model.

[0019] Figure 2 This is a schematic diagram of the structure behind the hidden decorative cover in the present invention.

[0020] Figure 3 、 4 This is a structural exploded view of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described below in detail with reference to the accompanying drawings. An American hinge comprises a hinge cup 1 and a hinge arm 2. The hinge cup 1 is provided with a concave receiving area 3. The hinge arm 2 is hingedly mounted in the receiving area 3 via a first pin 4. A buffer 5 is also mounted in the receiving area 3. The buffer 5 contacts the hinge arm 2. When the hinge is closed, the buffer 5 is subjected to force on the hinge arm 2, providing a buffering effect when the hinge arm 2 is closed. The hinge cup 1 is characterized in that a double torsion spring 6 is also mounted in the receiving area 3. The first spring body 61 and the second spring body 62 of the double torsion spring 6 are located on both sides of the buffer 5. A connecting arm 63 between the first spring body 61 and the second spring body 62 is arranged across the buffer 5. A second pin 7 is mounted transversely in the receiving area 3 to clamp and secure the connecting arm 63 between the second pin 7 and the buffer 5.

[0022] Ear seats 21 extend outwardly from both sides of the hinge arm 2 , and the first supporting leg 64 and the second supporting leg 65 of the double torsion spring 6 are respectively pressed on the ear seats 21 on both sides of the hinge arm 2 to apply elastic force on the hinge arm 2 .

[0023] In one embodiment, a buffer seat 8 is fixedly installed in the accommodating area 3 , and a mounting hole 81 is provided on the buffer seat 8 . The cylinder portion 51 of the buffer 5 is inserted and fixed in the mounting hole 81 .

[0024] In one embodiment, a slider 82 is further provided on the buffer seat 8, and the piston rod 52 of the buffer 5 is connected to the slider 82. A contact surface 83 is provided on the top of the slider 82 to contact the hinge arm 2 to transmit power.

[0025] In one embodiment, the bottom of the slider 82 is provided with a buckle 84 extending leftward and rightward downward. Correspondingly, the buffer seat 8 is provided with a guide groove 85, and the buckle 84 is slidably installed in the guide groove 85.

[0026] In one embodiment, concave receiving grooves 86 are provided on both sides of the slider 82 at positions corresponding to the first spring body 61 and the second spring body 62 .

[0027] In one embodiment, the surface of the accommodating area 3 is covered with a decorative cover 9 , which hides the buffer 5 and the double torsion spring 6 inside the accommodating area 3 .

[0028] Working Principle: In this case, the hinge arm 2 is hingedly mounted within the housing 3 of the hinge cup 1 via a first pin 4. A double torsion spring 6 provides the elastic force required to open and close the hinge arm 2. The first and second spring bodies 61, 62 of the double torsion spring are positioned on either side of a buffer 5 and secured between the second pin 7 and the buffer 5 via a connecting arm 63. When the door panel connected to the hinge arm is opened or closed, the hinge arm rotates around the first pin 4. The elastic force exerted by the double torsion spring 6 allows the hinge arm to open and close more smoothly and returns to its initial position when closed.

[0029] The buffer 5 is installed within the hinge cup's housing 3 and contacts the hinge arm 2. The buffer comprises a cylinder 51 and a piston rod 52. During the final closing phase of the hinge, the hinge arm 2 compresses the buffer, causing the piston rod 52 to retract into the cylinder. The gas or liquid within the buffer 5 slowly flows to absorb the impact of closing, providing a cushioning effect.

[0030] Furthermore, the buffer seat 8 is fixedly mounted in the accommodating area 3 and fixes the cylinder portion 51 of the buffer 5 by providing a mounting hole 81. In addition, the slider 82 is connected to the piston rod 52 of the buffer and evenly transmits the force to the buffer when the hinge arm is closed, further enhancing the buffering effect and reducing noise and impact.

[0031] The top of the slider 82 is provided with a contact surface 83 for contacting the hinge arm 2. During the closing process of the hinge arm, the slider is subjected to the force of the hinge arm, pushing the piston rod 52. The bottom of the slider is provided with a downwardly extending clip 84, which is slidably mounted in a guide groove 85 on the buffer seat 8, ensuring that the slider moves stably along the predetermined trajectory during movement and avoiding deviation.

[0032] In addition, concave accommodating grooves 86 corresponding to the positions of the first spring body 61 and the second spring body 62 are provided on both sides of the slider 82 to ensure a tighter fit between the double torsion spring and the slider, optimize the transmission and distribution of force, reduce friction, and improve the smoothness of opening and closing.

[0033] To enhance the hinge's aesthetics, the present invention incorporates a decorative cover 9 on the surface of the accommodating area 3, which conceals the internal components, including the buffer 5 and dual torsion springs 6, within the hinge cup. This effectively conceals the complex internal structure and enhances the hinge's overall appearance, making it more compatible with modern furniture designs. Furthermore, the second pin securing the torsion spring also secures the buffer, eliminating the need for a separate buffer-securing mechanism. This makes the buffer structure more compact and compact, thus facilitating widespread adoption.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. An American hinge, comprising a hinge cup (1) and a hinge arm (2), wherein a concave receiving area (3) is provided in the hinge cup (1), the hinge arm (2) is hingedly mounted in the receiving area (3) via a first pin (4), a buffer (5) is further mounted in the receiving area (3), the buffer (5) is in contact with the hinge arm (2), and when the hinge is closed, the buffer (5) is subjected to force on the hinge arm (2), thereby playing a buffering role when the hinge arm (2) is closed, and is characterized in that: A double torsion spring (6) is also installed in the accommodating area (3), and the first spring body (61) and the second spring body (62) of the double torsion spring (6) are located on both sides of the buffer (5). The connecting arm (63) between the first spring body (61) and the second spring body (62) is arranged across the buffer (5). A second pin shaft (7) is installed transversely in the accommodating area (3) to clamp and fix the connecting arm (63) between the second pin shaft (7) and the buffer (5); Ear seats (21) extend outwardly from both sides of the hinge arm (2), and the first supporting leg (64) and the second supporting leg (65) of the double torsion spring (6) are respectively pressed on the ear seats (21) on both sides of the hinge arm (2), exerting elastic force on the hinge arm (2).

2. The American hinge according to claim 1, characterized in that: A buffer seat (8) is also fixedly installed in the accommodating area (3), and a mounting hole (81) is provided on the buffer seat (8). The cylinder portion (51) of the buffer (5) is inserted and fixed in the mounting hole (81).

3. The American hinge according to claim 2, characterized in that: The buffer seat (8) is further provided with a slider (82), the piston rod (52) of the buffer (5) is connected to the slider (82), and the top of the slider (82) is provided with a contact surface (83) that contacts the hinge arm (2) to transmit power.

4. The American hinge according to claim 3, characterized in that: The bottom of the slider (82) is provided with a buckle (84) extending leftward and rightward downward. Correspondingly, a guide groove (85) is provided on the buffer seat (8), and the buckle (84) is slidably installed in the guide groove (85).

5. The American hinge according to claim 3, characterized in that: Concave receiving grooves (86) are provided on both sides of the slider (82) at positions corresponding to the first spring body (61) and the second spring body (62).

6. The American hinge according to claim 1, characterized in that: The surface of the accommodation area (3) is covered with a decorative cover (9), which conceals the buffer (5) and the double torsion spring (6) within the accommodation area (3).

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