Aluminum frame door hinge

Abstract

An aluminum frame door hinge comprises a base installed on one side of a cabinet body and a hinge cup installed on one side of a door frame, the hinge cup and the base are hinged through an upper connecting rod and a lower connecting rod, the hinge cup, the base, the upper connecting rod and the lower connecting rod form a four-connecting-rod mechanism, and the upper connecting rod and the lower connecting rod swing relative to the hinge cup and the base. The side, facing the hinge cup, of the upper connecting rod extends outwards to form a driving arm, a buffer is installed in the hinge cup and extends into the moving track of the driving arm, and when the hinge is closed, the driving arm presses the buffer to generate door closing damping force. The hinge has the advantages that the buffer is integrated in the hinge cup instead of being installed on the base in the traditional design, the buffer does not occupy the inner space of the base any more, the base does not need to be provided with a complex containing structure, the overall size is smaller, and the problem that the appearance of a traditional hinge is cumbersome due to the fact that the base is bloated is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hinge, in particular to an aluminum frame door hinge. BACKGROUND

[0002] The aluminum frame door hinge is a connecting component widely used in furniture, cabinet and other fields. Its main function is to realize the opening and closing of the door body and ensure the stable operation of the door body during the opening and closing process. In order to improve the user experience, modern aluminum frame door hinges are usually equipped with buffers to reduce the impact force when the door body is closed, reduce noise and prolong the service life of the hinge.

[0003] In the prior art, the buffer is usually installed in the base of the hinge, and the buffer function is realized through the mechanical structure in the base. However, this design has the following disadvantages:

[0004] 1. The base is large in size, affecting the appearance: Since the buffer is installed in the base, enough installation position needs to be reserved in the internal space of the base, resulting in a large size of the base. This not only increases the overall size of the hinge, but also affects the aesthetics of the furniture, especially in the modern home environment pursuing simple design, the large base looks heavy and incongruous.

[0005] 2. Installation and maintenance are not convenient, the buffer is installed in the base, which needs to disassemble the base during installation and maintenance, increasing the complexity and time cost of operation. In addition, the internal space of the base is narrow, and the installation and debugging of the buffer are difficult, which is prone to problems such as installation out of position or inaccurate debugging.

[0006] 3. The buffering effect is limited: Since the buffer is located in the base, the linkage between the buffer and the door body needs to be realized through complex mechanical structure, resulting in low transmission efficiency of the buffer force and unsatisfactory buffering effect. Especially in the case of heavy door body or fast closing speed, the buffer may not provide enough damping force, resulting in a large impact and noise when the door body is closed.

[0007] 4. Complex structure, high cost: In the prior art, in order to realize the buffering function, complex mechanical structure needs to be designed in the base, which not only increases the manufacturing cost of the hinge, but also increases the failure rate. The complex structure also reduces the reliability of the hinge and shortens the service life. Therefore, it is necessary to make further improvement. CONTENT OF THE UTILITY MODEL

[0008] In order to solve the above problems in the prior art, the utility model provides an aluminum frame door hinge, which installs the buffer in the hinge cup and realizes the buffering function by the direct contact of the driving arm and the buffer, thereby reducing the size of the base, improving the aesthetics of the hinge, simplifying the structure and improving the buffering effect and reliability of the aluminum frame door hinge.

[0009] The utility model discloses a purpose is realized through the following mode: a kind of aluminium frame door hinge, including the base of installation in cabinet one side, and the hinge cup of installation in door frame one side, the hinge cup between the base is hinged by upper connecting rod and lower connecting rod, hinge cup, base, upper connecting rod and lower connecting rod constitute four connecting rod mechanism, upper connecting rod and lower connecting rod swing relative to hinge cup and base, realize the opening and closing of hinge: the side of upper connecting rod towards hinge cup extends outward and has driving arm, the hinge cup is installed with buffer, buffer extends into the movable track of driving arm, when hinge is closed, driving arm presses buffer and generates door closing damping force.

[0010] Further: the hinge cup is provided with mounting hole, and the buffer is mounted in the mounting hole.

[0011] Further: the mounting hole is blind hole with bottom, one end of the piston rod of buffer is fixed to the hole bottom, and the cylinder body part of buffer is axially slidably mounted in the mounting hole, and the driving arm is pressed on the cylinder body part of buffer.

[0012] Further: the buffer is self-resetting hydraulic damper.

[0013] Further: the upper connecting rod and the driving arm are integrally formed by metal material.

[0014] The utility model discloses the beneficial effect is: 1, simple structure, low in production cost, improve market competitiveness.

[0015] 2, buffer is integrated in hinge cup, instead of being mounted in base in traditional design, since buffer no longer occupies the internal space of base, base does not need to design complex containing structure, and the overall size is smaller, avoid the problem of appearance heavy of traditional hinge due to the obesity of base.

[0016] 3, driving arm directly presses the cylinder body part of buffer, and buffer is located in the movable track of driving arm, and the contact point of driving arm and buffer is located on the movement path of four connecting rod mechanism, in the final stage of hinge closing, driving arm directly exerts pressure on buffer, ensure that damping force dynamically adjusts with the closing speed of door body, effectively absorb impact energy.

[0017] 4, the characteristic of self-resetting hydraulic damper makes it generate uniform hydraulic resistance when being pressed, and the door body closing process is smooth and no jerk, completely avoids producing impact noise, and improves user experience.

[0018] 5, mounting hole is blind hole with bottom, one end of piston rod is fixed to hole bottom, and cylinder body part can only slide in axial direction, avoid that buffer deviates due to vibration or long-term use, ensure that the action direction of damping force is always aligned with the movement track of driving arm, prolong service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 This is a diagram showing the overall assembly and usage effect of this utility model and the cabinet.

[0020] Figure 2 , 3 This is a schematic diagram of the structure of this utility model.

[0021] Figure 4 This is an exploded view of the structure of this utility model.

[0022] Figure 5 This is a cross-sectional view of the hinge of this utility model in the open state.

[0023] Figure 6 This is a cross-sectional view of the hinge of this utility model in the closed state. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. An aluminum frame door hinge includes a base 1 installed on one side of the cabinet body and a hinge cup 2 installed on one side of the door frame. The hinge cup 2 and the base 1 are hinged together by an upper connecting rod 3 and a lower connecting rod 4. The hinge cup 2, base 1, upper connecting rod 3, and lower connecting rod 4 form a four-bar linkage. The upper connecting rod 3 and lower connecting rod 4 swing relative to the hinge cup 2 and the base 1 to open and close the hinge. A drive arm 5 extends outward from the side of the upper connecting rod 3 facing the hinge cup 2. A buffer 6 is installed inside the hinge cup 2, extending into the movement trajectory of the drive arm 5. When the hinge is closed, the drive arm 5 presses the buffer 6 to generate a closing damping force.

[0025] In one embodiment: the hinge cup 2 is provided with a mounting hole 7, and the buffer 6 is installed in the mounting hole 7.

[0026] In one embodiment: the mounting hole 7 is a bottomed blind hole, one end of the piston rod 61 of the buffer 6 is fixed to the bottom of the hole, the cylinder part 62 of the buffer 6 is axially slidably installed in the mounting hole 7, and the drive arm 5 is pressed on the cylinder part 62 of the buffer 6.

[0027] In one embodiment, the buffer 6 is a self-resetting hydraulic damper.

[0028] In one embodiment, the upper connecting rod 3 and the drive arm 5 are integrally formed from metal.

[0029] Working Principle: The aluminum frame door hinge of this invention achieves smooth opening and closing of the door and damping buffer function through the coordinated action of the four-bar linkage and the buffer. Its working principle and technical advantages are explained in detail below with reference to the accompanying drawings:

[0030] In this case, the hinge consists of a base 1, a hinge cup 2, an upper connecting rod 3, and a lower connecting rod 4, forming a four-bar linkage. When the door is opened, the door pulls the hinge cup 2 outward, and the upper connecting rod 3 and the lower connecting rod 4 swing synchronously around the hinge point of the base 1, pushing the hinge cup 2 to drive the door to unfold outward.

[0031] When the door is closed, the door moves inward under the action of gravity or external force, the upper connecting rod 3 and the lower connecting rod 4 swing in opposite directions, and the hinge cup 2 moves closer to the base 1 until the door is closed.

[0032] The four-bar linkage design ensures the stability of the door's opening and closing trajectory, avoiding the jamming or offset problems caused by single-point force in traditional hinges, and is especially suitable for heavy-duty doors.

[0033] When the door is nearly fully closed, the closing angle is ≤35°, which can be designed according to actual conditions. The drive arm 5 swings with the upper connecting rod 3 and enters the effective range of the buffer 6. The end of the drive arm 5 contacts the cylinder part 62 of the buffer 6 and applies axial pressure to the cylinder as the four-link continues to swing. Under the push of the drive arm 5, the cylinder part 62 slides along the mounting hole 7 towards the bottom of the hole, compressing the oil in the self-resetting hydraulic damper. The resistance generated by the oil flowing through the damping hole converts the kinetic energy of the door into heat energy, significantly reducing the closing speed.

[0034] It should be noted that the buffer 6 is located within the end travel trajectory of the drive arm 5 and intervenes only at the end of the door's closing process to avoid premature damping affecting the normal closing force. The direct coupling of hydraulic damping and mechanical transmission makes the transmission efficiency of the buffering force higher and effectively eliminates impact noise.

[0035] The hinge cup 2 has a cylindrical bottomed blind hole inside, and the piston rod 61 of the buffer 6 is fixed to the bottom of the hole. The cylinder body 62 can slide axially. When the drive arm 5 presses the cylinder body 62, the side wall of the mounting hole 7 forms a radial limit on the cylinder body to prevent the buffer 6 from shifting due to lateral force.

[0036] In existing technologies, the buffer is installed inside the base 1, requiring a long connecting rod or gear set to transmit the buffering force, resulting in a complex structure, high energy loss, and a bulky base. In this case, the drive arm 5 directly presses the buffer 6, eliminating intermediate transmission components and reducing energy loss. At the same time, since the buffer 6 is integrated into the hinge cup 2, the thickness of the base 1 can be reduced to 2 / 3 of the traditional design, making it more suitable for use in ultra-thin cabinets.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An aluminum frame door hinge, comprising a base (1) installed on one side of a cabinet body and a hinge cup (2) installed on one side of a door frame, wherein the hinge cup (2) and the base (1) are hinged together by an upper connecting rod (3) and a lower connecting rod (4), the hinge cup (2), the base (1), the upper connecting rod (3) and the lower connecting rod (4) forming a four-bar linkage, wherein the upper connecting rod (3) and the lower connecting rod (4) swing relative to the hinge cup (2) and the base (1) to realize the opening and closing of the hinge, characterized in that: The upper connecting rod (3) extends outward toward the hinge cup (2) with a drive arm (5). A buffer (6) is installed inside the hinge cup (2). The buffer (6) extends into the movement trajectory of the drive arm (5). When the hinge is closed, the drive arm (5) presses the buffer (6) to generate a closing damping force.

2. The aluminum frame door hinge according to claim 1, characterized in that: The hinge cup (2) is provided with a mounting hole (7), and the buffer (6) is installed in the mounting hole (7).

3. The aluminum frame door hinge according to claim 2, characterized in that: The mounting hole (7) is a bottomed blind hole. One end of the piston rod (61) of the buffer (6) is fixed to the bottom of the hole. The cylinder part (62) of the buffer (6) is axially slidably installed in the mounting hole (7). The drive arm (5) presses on the cylinder part (62) of the buffer (6).

4. The aluminum frame door hinge according to claim 1, characterized in that: The buffer (6) is a self-resetting hydraulic damper.

5. The aluminum frame door hinge according to claim 1, characterized in that: The upper connecting rod (3) and the drive arm (5) are integrally formed from metal.

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