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 beneficial effects 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 internal 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 invention relates to a hinge, in particular to an aluminium frame door hinge. Background Art

[0002] Aluminum frame door hinges are a type of connection component widely used in furniture, cabinets and other fields. Their main function is to open and close the door body and ensure that the door body operates smoothly 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 extend 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 achieved through the mechanical structure in the base. However, this design has the following disadvantages: 1. The base is large and affects the appearance: Since the buffer is installed in the base, the internal space of the base needs to reserve enough installation space, resulting in a large 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 that pursues simple design, the larger base appears bulky and uncoordinated.

[0004] 2. Inconvenient installation and maintenance. The buffer is installed inside the base, which requires the base to be disassembled for installation and maintenance, increasing the complexity and time cost of the operation. In addition, the internal space of the base is small, making the installation and debugging of the buffer difficult, and it is easy to have problems such as inadequate installation or inaccurate debugging.

[0005] 3. Limited buffering effect: Since the buffer is located inside the base, its linkage with the door body needs to be realized through a complex mechanical structure, resulting in low buffering force transmission efficiency and unsatisfactory buffering effect. Especially when the door body is heavy or the closing speed is fast, the buffer may not provide sufficient damping force, resulting in greater impact and noise when the door body is closed.

[0006] 4. Complex structure and high cost: In the prior art, in order to achieve the buffer function, a complex mechanical structure needs to be designed inside 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 its service life. Therefore, it is necessary to make further improvements. Summary of the invention

[0007] In order to solve the above-mentioned problems in the prior art, the present invention provides an aluminum frame door hinge, which installs a buffer in the hinge cup and realizes the buffering function by utilizing the direct contact between the driving arm and the buffer, thereby reducing the volume of the base and improving the aesthetics of the hinge. At the same time, the structure is simplified and the buffering effect and reliability are improved.

[0008] The objective of the present invention is achieved in the following manner: an aluminum frame door hinge, comprising 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 being hinged via an upper connecting rod and a lower connecting rod, the hinge cup, the base, the upper connecting rod and the lower connecting rod forming a four-bar mechanism, the upper connecting rod and the lower connecting rod swing relative to the hinge cup and the base to achieve the opening and closing of the hinge: a driving arm is extended outwardly from the upper connecting rod toward one side of the hinge cup, a buffer is installed in the hinge cup, the buffer extends into the active trajectory of the driving arm, and when the hinge is closed, the driving arm presses the buffer to generate a door closing damping force.

[0009] Furthermore: a mounting hole is provided in the hinge cup, and the buffer is installed in the mounting hole.

[0010] Furthermore: the mounting hole is a blind hole with a bottom, one end of the piston rod of the buffer is fixed to the bottom of the hole, the cylinder part of the buffer is axially slidably installed in the mounting hole, and the driving arm is pressed on the cylinder part of the buffer.

[0011] Furthermore: the buffer is a self-resetting hydraulic damper.

[0012] Furthermore: the upper connecting rod and the driving arm are integrally formed of metal material.

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

[0014] 2. The buffer is integrated into the hinge cup instead of being installed on the base as in the traditional design. Since the buffer no longer occupies the internal space of the base, the base does not need to be designed with a complex containment structure, and the overall size is smaller, avoiding the problem of bulky appearance of traditional hinges due to the bloated base.

[0015] 3. The driving arm directly presses the cylinder part of the buffer, and the buffer is located within the moving trajectory of the driving arm. The contact point between the driving arm and the buffer is located on the motion path of the four-bar linkage. In the final stage of hinge closing, the driving arm directly applies pressure to the buffer to ensure that the damping force is dynamically adjusted with the closing speed of the door body, effectively absorbing the impact energy.

[0016] 4. The characteristics of the self-resetting hydraulic damper enable it to generate uniform hydraulic resistance when under pressure, so that the door closing process is smooth and without setbacks, completely avoiding the generation of impact noise and improving the user experience.

[0017] 5. The mounting hole is a blind hole with a bottom. One end of the piston rod is fixed to the bottom of the hole. The cylinder part can only slide along the axial direction to prevent the buffer from shifting due to vibration or long-term use, ensuring that the direction of the damping force is always aligned with the motion trajectory of the drive arm, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a rendering of the present invention and the cabinet assembly.

[0019] Figure 2 , 3 It is a schematic diagram of the structure of the present invention.

[0020] Figure 4 It is a structural exploded view of the present invention.

[0021] Figure 5 This is a structural sectional view of the hinge of the present invention in an open state.

[0022] Figure 6 This is a structural cross-sectional view of the hinge of the present invention in a closed state. DETAILED DESCRIPTION

[0023] The present invention is 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 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 hingedly connected via an upper connecting rod 3 and a lower connecting rod 4, and the hinge cup 2, the base 1, the upper connecting rod 3 and the lower connecting rod 4 form 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, wherein the upper connecting rod 3 extends outwardly toward one side of the hinge cup 2 with a driving arm 5, wherein a buffer 6 is installed in the hinge cup 2, and the buffer 6 extends into the active track of the driving arm 5, and when the hinge is closed, the driving arm 5 presses the buffer 6 to generate a door closing damping force.

[0024] In one embodiment, a mounting hole 7 is provided in the hinge cup 2 , and the buffer 6 is installed in the mounting hole 7 .

[0025] In one of the embodiments: the mounting hole 7 is a blind hole with a bottom, 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 driving arm 5 is pressed on the cylinder part 62 of the buffer 6.

[0026] In one embodiment, the buffer 6 is a self-resetting hydraulic damper.

[0027] In one embodiment, the upper connecting rod 3 and the driving arm 5 are integrally formed of metal material.

[0028] Working principle: The aluminum frame door hinge of the present invention realizes the stability of the door opening and closing and the damping buffering function through the synergistic effect of the movement of the four-bar linkage and the buffer. The following is a detailed description of its working principle and technical advantages in conjunction with the accompanying drawings: In this case, the hinge is composed of a four-bar linkage consisting of a base 1, a hinge cup 2, an upper connecting rod 3 and a lower connecting rod 4. 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 expand outward.

[0029] When the door is closed, the door moves inwards due to gravity or external force, the upper connecting rod 3 and the lower connecting rod 4 swing in opposite directions, and the hinge cup 2 approaches the base 1 until the door is closed.

[0030] 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 on traditional hinges, and is especially suitable for heavy doors.

[0031] When the door is close to being fully closed, the closing angle is ≤35°. The specific design can be made according to the actual situation. The driving arm 5 swings with the upper connecting rod 3 into the action range of the buffer 6. The end of the driving 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. The cylinder part 62 slides along the mounting hole 7 toward the bottom of the hole under the push of the driving arm 5, compressing the oil in the self-resetting hydraulic damper. The kinetic energy of the door body is converted into heat energy through the resistance generated by the oil flowing through the damping hole, significantly reducing the closing speed.

[0032] It should be noted that the buffer 6 is located within the end active track of the driving arm 5 and intervenes only at the end of the door closing to avoid premature damping affecting the normal closing force. The direct coupling of hydraulic damping and mechanical transmission makes the buffer force transmission more efficient and effectively eliminates impact noise.

[0033] Among them, a cylindrical bottomed blind hole is provided in the hinge cup 2, the piston rod 61 of the buffer 6 is fixed at the bottom of the hole, and the cylinder part 62 can slide axially. When the driving arm 5 presses the cylinder part 62, the side wall of the mounting hole 7 forms a radial limit for the cylinder to prevent the buffer 6 from deflecting due to lateral force.

[0034] In the prior art, the buffer is installed in the base 1, and the buffer force needs to be transmitted through a long connecting rod or a gear set, resulting in a complex structure, large energy loss, and a bloated base. In this case, the driving arm 5 directly presses the buffer 6, eliminating the intermediate transmission components, reducing energy loss, and at the same time, because the buffer 6 is integrated in the hinge cup 2, the thickness of the base 1 can be reduced to 2 / 3 of the traditional design, which is more suitable for the use of ultra-thin cabinets.

[0035] 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 by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An aluminum frame door hinge, comprising a base (1) mounted on one side of a cabinet, and a hinge cup (2) mounted on one side of a door frame, wherein the hinge cup (2) and the base (1) are hingedly connected via an upper connecting rod (3) and a lower connecting rod (4), and the hinge cup (2), the base (1), the upper connecting rod (3) and the lower connecting rod (4) form a four-bar linkage, and 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: A driving arm (5) extends outwardly from the upper connecting rod (3) toward one side of the hinge cup (2), and a buffer (6) is installed in the hinge cup (2). The buffer (6) extends into the moving track of the driving arm (5). When the hinge is closed, the driving arm (5) presses the buffer (6) to generate a door closing damping force.

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

3. The aluminum frame door hinge according to claim 2, characterized in that: The mounting hole (7) is a blind hole with a bottom, 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 mounted in the mounting hole (7), and the driving arm (5) is pressed 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 driving arm (5) are integrally formed from a metal material.

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