Three main spindles plus four secondary spindles hinge

Abstract

This application discloses a three-main-shaft and four-secondary-shaft hinge, belonging to the field of hardware accessories. The hinge includes a first rocker arm, a second rocker arm hinged to the first rocker arm, at least four fixing plates for connecting the door frame and the door panel, and a multi-axis mechanism for connecting the first rocker arm, the second rocker arm, and the fixing plates. The multi-axis mechanism consists of a load-bearing main shaft section and secondary shaft sections for auxiliary rotation. The main shaft section includes a first main shaft, a second main shaft, and a third main shaft, and the secondary shaft section includes a first secondary shaft, a second secondary shaft, a third secondary shaft, and a fourth secondary shaft. This hinge reduces structural complexity, focuses on strengthening the load-bearing capacity of the three load-bearing shafts, and optimizes the form of the four secondary shafts. This allows this type of hinge to be manufactured using a stamping method, which not only makes its load-bearing capacity more stable and reliable but also significantly reduces production costs and accelerates production speed.

Description

Technical Field

[0001] This application relates to the field of hardware accessories technology, specifically a three-spindle plus four-spindle hinge. Background Technology

[0002] Concealed hinges (also known as hidden hinges) are a type of hardware that achieves a seamless connection between the door panel and the cabinet body through embedded installation. They are mainly used in kitchen cabinets, security doors, industrial cabinets, and other similar applications. By being installed inside the door frame and door leaf, they are completely hidden, enhancing the overall aesthetics.

[0003] The existing seven-axis concealed hinge has no primary or secondary relationship between the seven axes, resulting in a chaotic structure that fails to effectively reinforce key load-bearing areas, leading to poor load-bearing capacity. Furthermore, its complex structure limits the available manufacturing processes, confining it to casting, which results in high costs.

[0004] Therefore, this application provides a three-spindle plus four-spindle hinge to solve the above problems. Utility Model Content

[0005] This application provides a three-spindle plus four-spindle hinge, which aims to solve the problems mentioned in the background art, such as the chaotic shaft structure and unclear primary-secondary relationship leading to poor load-bearing capacity.

[0006] To achieve the above objectives, this application provides the following technical solution: a three-main-axis and four-secondary-axis hinge, including a first rocker arm, a second rocker arm hinged to the first rocker arm, at least four fixing plates for connecting the door frame and the door panel, and a multi-axis mechanism for connecting the first rocker arm, the second rocker arm, and the fixing plates. The multi-axis mechanism consists of a main shaft section for load bearing and a secondary shaft section for auxiliary rotation. The main shaft section includes a first main shaft, a second main shaft, and a third main shaft. The secondary shaft section includes a first secondary shaft, a second secondary shaft, a third secondary shaft, and a fourth secondary shaft. The first rocker arm and the second rocker arm are detachable. The first rocker arm and the second rocker arm are hinged to each other through the main shaft. The four fixing plates are hinged to the first rocker arm and the second rocker arm through the main shaft. The four fixed plates are connected to the first rocker arm via secondary shafts. In this way, during use, the complex structure of the original seven-axis hinge with multiple rocker arms is replaced by the first and second rocker arms. The first and second rocker arms solve the force distribution problem. By placing the load-bearing main shaft on the first and second rocker arms, and detaching the non-load-bearing secondary shafts from them, the structural complexity is reduced, the primary and secondary relationships between the axes are clearly defined, and the load-bearing force is mainly transmitted to the first and second rocker arms through the main shaft. The non-load-bearing secondary shafts provide assistance for the rotation of the fixed plates, focusing on strengthening the force on the three load-bearing axes. At the same time, the form of the four secondary shafts is optimized, allowing this type of hinge to be manufactured by stamping, which not only makes its load-bearing capacity more stable and reliable but also significantly reduces production costs and speeds up production.

[0007] Preferably, in order to ensure stable load bearing, a hinge groove is provided on one side of the first rocker arm, and a locking protrusion adapted to the hinge groove is fixedly installed on one side of the second rocker arm. The locking protrusion is inserted into the hinge groove, and the first spindle passes through the hinge groove and the locking protrusion along the length direction of the first rocker arm, serving as the main force-bearing component, which is stable and reliable.

[0008] Preferably, in order to ensure support strength, the second spindle is inserted into the side of the first rocker arm away from the first spindle, and both ends of the second spindle are hinged with first connecting pieces. The two first connecting pieces are respectively fixedly connected to the two fixed pieces, which effectively improves the support strength.

[0009] Preferably, in order to ensure support strength, the third spindle is inserted into the second rocker arm on the side away from the first spindle, and both ends of the third spindle are hinged with second connecting pieces. The two second connecting pieces are respectively fixedly connected to two other fixed pieces to improve support strength.

[0010] Preferably, to improve stability, the first secondary shaft is inserted into the first rocker arm at a position between the first main shaft and the second main shaft. Both ends of the first secondary shaft are hinged with a first connecting rod with a V-shaped structure. One end of the first connecting rod is hinged to the second connecting piece via a second secondary shaft. The end of the first connecting rod, which is different from the first main shaft and the second secondary shaft, is hinged to a second connecting rod with a C-shaped structure via a third secondary shaft. The end of the second connecting rod away from the third secondary shaft and the end of the first connecting piece away from the second main shaft are hinged to each other via a fourth secondary shaft, further improving stability, preventing detachment, and ensuring safety and reliability.

[0011] This hinge replaces the complex structure of the original seven-axis hinge with multiple rocker arms by using a first rocker arm and a second rocker arm. The first and second rocker arms solve the force problem. By placing the main shaft that needs to bear the load on the first and second rocker arms, and separating the secondary shaft that does not need to bear the load from the first and second rocker arms, the structural complexity is reduced, making the primary and secondary relationships between the axes clear. The load-bearing force is mainly transmitted to the first and second rocker arms through the main shaft, while the non-load-bearing secondary shaft provides assistance for the rotation of the fixed plate. The focus is on strengthening the force on the three load-bearing axes, while optimizing the form of the four secondary shafts. This type of hinge can be produced by stamping, which not only makes its load-bearing capacity more stable and reliable, but also greatly reduces production costs and speeds up production.

[0012] The hinge inserts a first secondary shaft into a pre-drilled hole on the first rocker arm, then hinges two first connecting rods to both ends of the first secondary shaft, and then connects a second connecting rod to one end of the first connecting rod via a third secondary shaft. The end of the second connecting rod is connected to the end of the first connecting piece via a fourth secondary shaft, and the first connecting rod and the second connecting piece are connected via a second secondary shaft. When the fixed piece rotates with the door panel, the secondary shaft provides auxiliary rotation, further improving stability, preventing detachment, and ensuring safety and reliability. Attached Figure Description

[0013] Figure 1 A schematic diagram of the external structure of a three-main-axis and four-secondary-axis hinge; Figure 2 A schematic diagram of the internal structure of a three-main-axis and four-secondary-axis hinge; Figure 3 This is a cross-sectional schematic diagram of a three-main-axis and four-secondary-axis hinge structure.

[0014] In the picture: 1. First rocker arm; 11. Hinge groove; 2. Second rocker arm; 21. Locking protrusion; 3. Fixing plate; 4. Multi-axis mechanism; 41. Main shaft part; 411. First main shaft; 412. Second main shaft; 413. Third main shaft; 42. Sub-shaft part; 421. First sub-shaft; 422. Second sub-shaft; 423. Third sub-shaft; 424. Fourth sub-shaft; 43. First connecting plate; 44. Second connecting plate; 45. First connecting rod; 46. Second connecting rod. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] Example 1 This embodiment provides a three-spindle and four-spindle hinge, such as Figure 1-3 As shown, the hinge includes a first rocker arm 1, a second rocker arm 2 hinged to the first rocker arm 1, at least four fixing plates 3 for connecting the door frame and the door panel, and a multi-axis mechanism 4 for connecting the first rocker arm 1, the second rocker arm 2, and the fixing plates 3. The multi-axis mechanism 4 consists of a main shaft 41 for load bearing and a secondary shaft 42 for auxiliary rotation. The main shaft 41 includes a first main shaft 411, a second main shaft 412 and a third main shaft 413. The secondary shaft 42 includes a first secondary shaft 421, a second secondary shaft 422, a third secondary shaft 423 and a fourth secondary shaft 424. The first rocker arm 1 and the second rocker arm 2 are detachable. The first rocker arm 1 and the second rocker arm 2 are hinged to each other through the main shaft part 41. The four fixing plates 3 are hinged to the first rocker arm 1 and the second rocker arm 2 through the main shaft part 41. The four fixed plates 3 are connected to the first rocker arm 1 via a secondary shaft 42.

[0017] In use, the complex structure of the original seven-axis hinge with multiple rocker arms is replaced by the first rocker arm 1 and the second rocker arm 2. The first rocker arm 1 and the second rocker arm 2 solve the force problem. By setting the main shaft part 41 that needs to bear the load on the first rocker arm 1 and the second rocker arm 2, and the secondary shaft part 42 that does not need to bear the load is separated from the first rocker arm 1 and the second rocker arm 2, the structural complexity is reduced, and the primary and secondary relationships between the axes are clear. The load-bearing force is mainly transmitted to the first rocker arm 1 and the second rocker arm 2 through the main shaft part 41. The non-load-bearing secondary shaft part 42 provides assistance for the rotation of the fixed plate 3. The force of the three load-bearing axes is strengthened, and the form of the four secondary shafts is optimized so that this type of hinge can be produced by stamping. This not only makes its load-bearing capacity more stable and reliable, but also greatly reduces production costs and speeds up production.

[0018] Specifically, a hinge groove 11 is provided on one side of the first rocker arm 1, and a locking protrusion 21 that is adapted to the hinge groove 11 is fixedly installed on one side of the second rocker arm 2. The locking protrusion 21 is inserted into the hinge groove 11, and the first main shaft 411 passes through the hinge groove 11 and the locking protrusion 21 along the length direction of the first rocker arm 1.

[0019] In use, insert the locking protrusion 21 into the hinge groove 11, and then insert the first spindle 411 into the reserved hole from the side to complete the connection between the first rocker arm 1 and the second rocker arm 2. As the main force-bearing component, it is stable and reliable.

[0020] More specifically, the second spindle 412 is inserted into the first rocker arm 1 on the side away from the first spindle 411. Both ends of the second spindle 412 are hinged with first connecting pieces 43, and the two first connecting pieces 43 are respectively fixedly connected to the two fixing pieces 3.

[0021] In use, the second spindle 412 is inserted into the reserved hole on one side of the first rocker arm 1, and the first connecting piece 43 is installed at both ends by bolts to support the fixing piece 3, which effectively improves the support strength.

[0022] Furthermore, the third spindle 413 is inserted into the second rocker arm 2 on the side away from the first spindle 411. Both ends of the third spindle 413 are hinged with second connecting pieces 44, and the two second connecting pieces 44 are respectively fixedly connected to the other two fixing pieces 3.

[0023] In use, the third spindle 413 is inserted into the reserved hole on one side of the second rocker arm 2, and the second connecting piece 44 is installed at both ends by bolts to support the other two fixing pieces 3 and improve the support strength.

[0024] Furthermore, the first secondary shaft 421 is inserted into the first rocker arm 1 at a position between the first main shaft 411 and the second main shaft 412. Both ends of the first secondary shaft 421 are hinged with a first connecting rod 45 in a V-shape. One end of the first connecting rod 45 is hinged to the second connecting piece 44 via the second secondary shaft 422. The end of the first connecting rod 45 that is different from the first main shaft 411 and the second secondary shaft 422 is hinged to a second connecting rod 46 in a C-shape via the third secondary shaft 423. The end of the second connecting rod 46 away from the third secondary shaft 423 and the end of the first connecting piece 43 away from the second main shaft 412 are hinged to each other via the fourth secondary shaft 424.

[0025] In use, the first secondary shaft 421 is inserted into the pre-drilled hole on the first rocker arm 1, and then two first connecting rods 45 are hinged to both ends of the first secondary shaft 421. Then, the second connecting rod 46 is connected to one end of the first connecting rod 45 through the third secondary shaft 423. The end of the second connecting rod 46 is connected to the end of the first connecting piece 43 through the fourth secondary shaft 424. The first connecting rod 45 and the second connecting piece 44 are connected through the second secondary shaft 422. When the fixed piece 3 rotates with the door panel, the secondary shaft part 42 provides auxiliary rotation, further improving stability, preventing detachment, and ensuring safety and reliability.

[0026] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A three-main-axis and four-secondary-axis hinge, comprising a first rocker arm (1), a second rocker arm (2) hinged to the first rocker arm (1), at least four fixing plates (3) for connecting the door frame and the door panel, and a multi-axis mechanism (4) for connecting the first rocker arm (1), the second rocker arm (2), and the fixing plates (3), characterized in that: The multi-axis mechanism (4) consists of a main shaft (41) for load bearing and a secondary shaft (42) for auxiliary rotation. The main shaft (41) includes a first main shaft (411), a second main shaft (412) and a third main shaft (413). The secondary shaft (42) includes a first secondary shaft (421), a second secondary shaft (422), a third secondary shaft (423) and a fourth secondary shaft (424). The first rocker arm (1) and the second rocker arm (2) are detachable. The first rocker arm (1) and the second rocker arm (2) are hinged to each other through the main shaft (41). The four fixed plates (3) are hinged to the first rocker arm (1) and the second rocker arm (2) through the main shaft (41). The four fixed plates (3) are connected to the first rocker arm (1) via a secondary shaft (42).

2. The three-spindle plus four-spindle hinge according to claim 1, characterized in that: The first rocker arm (1) has a hinge groove (11) on one side, and the second rocker arm (2) has a locking protrusion (21) that is compatible with the hinge groove (11) fixedly installed on one side. The locking protrusion (21) is inserted into the hinge groove (11), and the first spindle (411) passes through the hinge groove (11) and the locking protrusion (21) along the length direction of the first rocker arm (1).

3. The three-spindle plus four-spindle hinge according to claim 2, characterized in that: The second spindle (412) is inserted into the first rocker arm (1) on the side away from the first spindle (411). Both ends of the second spindle (412) are hinged with first connecting pieces (43), and the two first connecting pieces (43) are fixedly connected to the two fixing pieces (3) respectively.

4. The three-spindle plus four-spindle hinge according to claim 3, characterized in that: The third spindle (413) is inserted into the second rocker arm (2) on the side away from the first spindle (411). Both ends of the third spindle (413) are hinged with second connecting pieces (44), and the two second connecting pieces (44) are respectively fixedly connected to the other two fixing pieces (3).

5. The three-spindle plus four-spindle hinge according to claim 4, characterized in that: The first sub-shaft (421) is inserted into the first rocker arm (1) at a position between the first main shaft (411) and the second main shaft (412). Both ends of the first sub-shaft (421) are hinged with a first connecting rod (45) in a V-shape. One end of the first connecting rod (45) is hinged to the second connecting piece (44) through the second sub-shaft (422). The end of the first connecting rod (45) that is different from the first main shaft (411) and the second sub-shaft (422) is hinged to a second connecting rod (46) in a C-shape through the third sub-shaft (423). The end of the second connecting rod (46) that is away from the third sub-shaft (423) and the end of the first connecting piece (43) that is away from the second main shaft (412) are hinged to each other through the fourth sub-shaft (424).

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