Two-linkage hinge

Abstract

The two-linkage hinge comprises a first connecting arm, a second connecting arm and a first pin shaft, the first connecting arm and the second connecting arm are each of a shell-shaped structure with an opening, one end of the second connecting arm is connected to the end of the first connecting arm in an inserted mode, and the second connecting arm and the first connecting arm are rotationally connected through the first pin shaft; the torsional spring is arranged on the first pin shaft in a sleeving mode, and the two ends of the torsional spring are connected with the first connecting arm and the second connecting arm correspondingly; the device comprises a first connecting arm, a U-shaped shaft, an L-shaped driving arm, a second pin shaft, a third pin shaft, a fourth pin shaft and a damper, a base of the damper is rotationally connected with the first connecting arm through the second pin shaft, the output end of the damper is rotationally connected with one end of the L-shaped driving arm through the third pin shaft, and the middle of the L-shaped driving arm is rotationally connected with the second connecting arm through the fourth pin shaft. The two-linkage hinge mounting mode is achieved through the L-shaped driving arm, and compared with a traditional three-linkage hinge, mounting is more convenient, more cost is saved, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture hinges, in particular to a double-linkage hinge. Background Art

[0002] The transmission mechanism inside the existing cabinet door hinge is mostly a three-link hinge, such as the utility model patent with patent application number 202122235987.3. The content of this utility model includes: hinge cup, first rotating member, second rotating member, U-shaped pin, housing, first rotating shaft, second rotating shaft, third rotating member, third rotating shaft, torsion spring, damper, a contact portion is provided at one end of the third rotating member close to the second rotating member, the contact portion is in contact with the second rotating member, the torsion spring is assembled in the third rotating member, and the U-shaped portion of the torsion spring is arranged between the third rotating member and the damper. The advantage of this utility model is that the cabinet door is opened and closed by cooperating with the contact portion provided by the third rotating member and the first protrusion provided by the second rotating member, the second rotating member is in contact with the third rotating member, and the torsion spring is assembled in the third rotating member. However, the disadvantage of this three-link hinge is that the structure is complex, there are many internal parts, and it is easy to be damaged after long-term use. In addition, the door panels of some cabinet doors are small, and the cost of using a three-link hinge is high. For this reason, we propose a two-link hinge. Utility Model Content

[0003] The purpose of the utility model is to provide a double-linkage hinge to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-linkage hinge, comprising:

[0005] A first connecting arm, a second connecting arm and a first pin shaft, wherein the first connecting arm and the second connecting arm are both shell-shaped structures with openings, one end of the second connecting arm is plugged into the end of the first connecting arm, and the two are rotatably connected through the first pin shaft;

[0006] A torsion spring, wherein the torsion spring is sleeved on the first pin shaft, and two ends of the torsion spring are respectively connected to the first connecting arm and the second connecting arm;

[0007] A U-shaped shaft, an L-shaped driving arm, a second pin shaft, a third pin shaft, a fourth pin shaft and a damper, wherein the base of the damper is rotatably connected to the first connecting arm through the second pin shaft, the output end of the damper is rotatably connected to one end of the L-shaped driving arm through the third pin shaft, the middle part of the L-shaped driving arm is rotatably connected to the second connecting arm through the fourth pin shaft, the end of the L-shaped driving arm away from the damper is rotatably connected to one end of the U-shaped shaft, and the other end of the U-shaped shaft is rotatably connected to the second connecting arm;

[0008] A first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are used for installing the first connecting arm and the second connecting arm respectively.

[0009] Preferably, the sliding sleeve on the fourth pin shaft is provided with a shaft sleeve, and the shaft sleeve is fixed to the side wall of the L-shaped driving arm.

[0010] Preferably, a U-shaped opening is provided at one end of the L-shaped driving arm, and the output end of the damper is inserted into the U-shaped opening and is rotationally connected to the U-shaped opening via a third pin shaft.

[0011] Preferably, the thickness of one end of the L-shaped driving arm close to the damper is greater than the thickness of the other end.

[0012] Preferably, a reinforcing rib is provided at one end of the L-shaped driving arm close to the U-shaped shaft, and the reinforcing rib and the L-shaped driving arm are an integral structure.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the door body is opened on the cabinet door, the external force applies a pulling force to the second connecting arm and one end of the L-shaped driving arm through the second connecting member. At this time, the L-shaped driving arm rotates around the third pin shaft, and the other end thereof pulls out the damper, realizing the rotation of the first connecting arm relative to the second connecting arm, so that the door body is in an open state relative to the cabinet body. When the door body is closed on the cabinet door, the torsion spring can make the door body close quickly, and the damper can buffer the closing of the door body. The two-link hinge installation method is realized by the L-shaped driving arm. Compared with the traditional three-link hinge, it is more convenient to install and has a longer service life;

[0015] 2. When installing the small door panels of some cabinet doors, this two-link structure is combined into a 26-cup hinge, which reduces the manufacturing cost of the cabinet doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the double linkage structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the first connecting arm and the second connecting arm of the utility model;

[0019] Figure 4 This is a schematic diagram of the L-shaped driving arm structure of the utility model;

[0020] Figure 5 Schematic diagram of the L-shaped driving arm being applied to the full cover hinge, half cover hinge and column hinge respectively.

[0021] In the figure: 1-first connecting arm; 2-second connecting arm; 3-first pin; 4-torsion spring; 5-U-shaped shaft; 6-L-shaped driving arm; 7-second pin; 8-third pin; 9-fourth pin; 10-damper; 11-first connecting member; 12-second connecting member; 13-bushing; 14-U-shaped opening; 15-reinforcement rib; 16-full cover hinge; 17-half cover hinge; 18-column hinge. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a two-link hinge, comprising: a first connecting arm 1, a second connecting arm 2 and a first pin shaft 3, wherein the first connecting arm 1 and the second connecting arm 2 are both shell-like structures with openings, one end of the second connecting arm 2 is plugged into the end of the first connecting arm 1, and the two are rotatably connected through the first pin shaft 3; further comprising a torsion spring 4, wherein the torsion spring 4 is sleeved on the first pin shaft 3, and the two ends of the torsion spring 4 are respectively connected to the first connecting arm 1 and the second connecting arm 2; further comprising a U-shaped shaft 5, an L-shaped driving arm 6, a second pin shaft 7, a third pin shaft 8, a fourth pin shaft 9 and a damper 10, wherein the base of the damper 10 is rotatably connected to the first connecting arm 1 through the second pin shaft 7, and the output end of the damper 10 is connected through The third pin shaft 8 is rotatably connected to one end of the L-shaped driving arm 6, and the middle part of the L-shaped driving arm 6 is rotatably connected to the second connecting arm 2 through the fourth pin shaft 9. The end of the L-shaped driving arm 6 away from the damper 10 is rotatably connected to one end of the U-shaped shaft 5, and the other end of the U-shaped shaft 5 is rotatably connected to the second connecting arm 2; it also includes a first connecting member 11 and a second connecting member 12, and the first connecting member 11 and the second connecting member 12 are respectively used for the installation of the first connecting arm 1 and the second connecting arm 2. During installation, the first connecting member 11 and the second connecting member 12 are respectively installed on the cabinet body and the door body, and the first connecting member 11 and the second connecting member 12 respectively adopt existing product structures, which are not repeated here.

[0024] When the door body is opened on the cabinet door, external force applies pulling force to the second connecting arm 2 and one end of the L-shaped driving arm 6 through the second connecting member 12. At this time, the L-shaped driving arm 6 rotates around the third pin 8, and its other end pulls out the damper 10, thereby realizing the rotation of the first connecting arm 1 relative to the second connecting arm 2, so that the door body is in an open state relative to the cabinet body. When the door body is closed on the cabinet door, the door body can be quickly closed by the torsion spring 4, and the damper 10 can buffer the closing of the door body.

[0025] The present application realizes a two-link hinge installation method through an L-shaped driving arm 6. Compared with the traditional three-link hinge, it has more stable performance, more convenient installation, more cost-saving, and longer life, and is suitable for 12mm to 16mm door panels.

[0026] As a preferred implementation, the double-linkage hinge of this embodiment adopts a 26-cup size design, which has the same function as the existing 35-cup hinge. The hinge of this embodiment is more compact, economical and practical, and can be applied to the installation of small door panels, reducing the manufacturing cost of the cabinet door.

[0027] As a preferred implementation, please refer to Figure 5 The L-shaped driving arm 6 can be applied to hinges of different structures such as a half cover hinge 16, a full cover hinge 17 and a column hinge 18 according to usage requirements.

[0028] As a preferred implementation, please refer to Figure 4 A sleeve 13 is provided on the sliding sleeve of the fourth pin shaft 9 , and the sleeve 13 is fixed to the side wall of the L-shaped driving arm 6 , thereby increasing the force-bearing area of ​​the fourth pin shaft 9 relative to the L-shaped driving arm 6 and improving the practical life of the fourth pin shaft 9 .

[0029] As a preferred implementation, please refer to Figure 4 A U-shaped opening 14 is provided at one end of the L-shaped driving arm 6, and the output end of the damper 10 is inserted into the U-shaped opening 14 and is rotatably connected to the U-shaped opening 14 through the third pin shaft 8, which facilitates the connection between the output end of the damper 10 and the L-shaped driving arm 6, making the structure of the hinge more compact and exquisite.

[0030] As a preferred embodiment, the thickness of the L-shaped driving arm 6 at one end close to the damper 10 is greater than the thickness at the other end, thereby improving the fatigue resistance of the L-shaped driving arm at one end close to the hydraulic cylinder.

[0031] As a preferred implementation, please refer to Figure 3 A reinforcing rib 15 is provided at one end of the L-shaped driving arm close to the U-shaped shaft 5. The reinforcing rib 15 and the L-shaped driving arm 6 are an integrated structure, which makes the L-shaped driving arm stronger and improves its service life.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double linkage hinge, comprising: A first connecting arm (1), a second connecting arm (2) and a first pin shaft (3), wherein the first connecting arm (1) and the second connecting arm (2) are both shell-like structures with an opening, one end of the second connecting arm (2) is plugged into the end of the first connecting arm (1), and the two are rotatably connected via the first pin shaft (3); A torsion spring (4), wherein the torsion spring (4) is sleeved on the first pin shaft (3), and two ends of the torsion spring (4) are respectively connected to the first connecting arm (1) and the second connecting arm (2); A first connecting member (11) and a second connecting member (12), wherein the first connecting member (11) and the second connecting member (12) are used for installing the first connecting arm (1) and the second connecting arm (2), respectively; It is characterized by further comprising: A U-shaped shaft (5), an L-shaped driving arm (6), a second pin shaft (7), a third pin shaft (8), a fourth pin shaft (9) and a damper (10), wherein the base of the damper (10) is rotatably connected to the first connecting arm (1) via the second pin shaft (7), the output end of the damper (10) is rotatably connected to one end of the L-shaped driving arm (6) via the third pin shaft (8), the middle part of the L-shaped driving arm (6) is rotatably connected to the second connecting arm (2) via the fourth pin shaft (9), the end of the L-shaped driving arm (6) away from the damper (10) is rotatably connected to one end of the U-shaped shaft (5), and the other end of the U-shaped shaft (5) is rotatably connected to the second connecting arm (2).

2. A double linkage hinge according to claim 1, characterized in that: The sliding sleeve on the fourth pin shaft (9) is provided with a shaft sleeve (13), and the shaft sleeve (13) is fixed to the side wall of the L-shaped driving arm (6).

3. The double linkage hinge according to claim 1, characterized in that: One end of the L-shaped driving arm (6) is provided with a U-shaped opening (14), the output end of the damper (10) is inserted into the U-shaped opening (14), and is rotationally connected to the U-shaped opening (14) via a third pin shaft (8).

4. The double linkage hinge according to claim 1, characterized in that: The thickness of one end of the L-shaped driving arm (6) close to the damper (10) is greater than the thickness of the other end.

5. The double linkage hinge according to claim 1, characterized in that: A reinforcing rib (15) is provided at one end of the L-shaped driving arm (6) close to the U-shaped shaft (5); the reinforcing rib (15) and the L-shaped driving arm (6) are an integral structure.

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