Electric hidden hinge

Abstract

The utility model discloses an electric hidden hinge which comprises an installation base, an installation groove is formed in one side of the installation base, a first connecting plate is movably connected to the installation groove, an electric push rod is installed on one side of the installation base, and an output shaft of the electric push rod penetrates through the installation base to be hinged to the first connecting plate. A second connecting plate is movably connected to one end of the first connecting plate, a hinge plate is mounted at the end, away from the first connecting plate, of the second connecting plate, a third connecting plate is movably connected to one side of the second connecting plate, and the other end, close to the first connecting plate, of the third connecting plate is movably connected with the mounting groove. According to the electric hidden hinge, the structural design of the electric push rod is adopted, the three-section type connecting structure is pushed to rotate through the electric push rod, so that the door body on the hinge plate is driven to rotate, the purpose of automatically opening and closing the door is achieved, the electric hidden hinge can be in linkage with an existing intelligent home, and the hinge plate is directly driven through pushing force. Thrust does not need to be converted into torsion, and a heavier door body can be pushed.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to an electric concealed hinge. Background Technology

[0002] Existing hinges can be divided into ordinary hinges, hydraulic hinges, and damping hinges. Ordinary hinges have a simple structure, usually consisting of two metal plates and a connecting pin, serving only as a connection and rotation mechanism. They are used in applications with low requirements for opening and closing functionality and low load. Hydraulic hinges use the flow of hydraulic oil to control the opening and closing speed and buffering force of the hinge, which can avoid large impact forces and noise when the door closes. They are commonly used in hotel and office building doors. Damping hinges, on the other hand, use a damper to provide resistance, making the hinge open and close more smoothly and slowly. They can precisely control the opening and closing angle and speed, and are suitable for high-end furniture cabinet doors, display cabinet doors, and other applications that require precise positioning and slow closing.

[0003] However, with the development of smart technology, existing hinges have gradually revealed many shortcomings. These traditional hinges do not provide the power to open the door and rely entirely on manual pushing and pulling. The pushing force is converted into torque through the internal spiral structure of the hinge to open and close the door. For some heavy doors, it is difficult for people with mobility difficulties such as those in wheelchairs, using crutches, carrying heavy objects, or holding babies to push and pull them manually. In addition, traditional hinges cannot achieve intelligent control and are difficult to use in conjunction with existing smart home systems.

[0004] Meanwhile, existing hinges are usually double-piece structures, requiring slots to be cut on the side of the door and the door frame for installation. In order to reduce the door edge distance when the door is closed, the hinge edge distance is designed to be relatively narrow. This means that if the door rotates too much during the opening process, the door is likely to hit the corner of the door frame, causing the door to get stuck. Therefore, the rotation angle is small, which brings certain limitations to daily use. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an electrically operated concealed hinge to solve the problems mentioned in the background art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An electrically operated concealed hinge includes a mounting base with a mounting groove on one side. A first connecting plate is movably connected to the mounting groove, and an electric push rod is mounted on one side of the mounting base. The output shaft of the electric push rod passes through the mounting base and is hinged to the first connecting plate to drive the first connecting plate to rotate around the mounting base. A second connecting plate is movably connected to one end of the first connecting plate, allowing the second connecting plate to rotate around the first connecting plate. A flap plate is mounted on the end of the second connecting plate away from the first connecting plate, and a third connecting plate is movably connected to one side of the second connecting plate. The other end of the third connecting plate is adjacent to the first connecting plate and movably connected to the mounting groove, forming a three-section connection structure. The electric push rod can drive this three-section connection structure to expand outward or retract into the mounting groove.

[0008] As a preferred embodiment of an electric concealed hinge, the mounting base includes a base body, the mounting groove is formed on one side of the base body, and connecting seats are installed at both the upper and lower ends of the mounting groove. A first rotating shaft is movably connected between the two connecting seats via a bearing, and the first connecting plate is sleeved on the first rotating shaft and hinged to the mounting base.

[0009] As a preferred embodiment of the electric concealed hinge, the first connecting plate includes an annular portion sleeved on the first rotating shaft, and one side of the annular portion extends outward to form a connecting portion.

[0010] As a preferred embodiment of the electric concealed hinge, a first connecting groove is provided at the end of the connecting part away from the annular part, a second rotating shaft is installed in the first connecting groove, one end of the second connecting plate is sleeved on the second rotating shaft and hinged to the connecting part, and a planar thrust bearing is installed on the second rotating shaft at the position between the second connecting plate and the first connecting groove.

[0011] As a preferred embodiment of the electric concealed hinge, a second connecting groove is provided in the middle of the second connecting plate, a third rotating shaft is installed in the second connecting groove, one end of the third connecting plate is sleeved on the third rotating shaft and hinged to the second connecting plate, and a planar thrust bearing is installed on the third rotating shaft at the position between the second connecting plate and the second connecting groove.

[0012] As a preferred embodiment of the electric concealed hinge, a fourth pivot is movably connected between the two connecting seats near the first pivot. The end of the third connecting plate away from the second connecting plate is sleeved on the fourth pivot and hinged to the mounting seat. A planar thrust bearing is installed on the fourth pivot at the position between the connecting seat and the third connecting plate.

[0013] As a preferred embodiment of the electric concealed hinge, a U-shaped seat is installed on the back of the connecting part away from the second connecting plate, a pin is installed inside the U-shaped seat, and the output shaft of the electric push rod is sleeved on the pin and hinged to the U-shaped seat.

[0014] As a preferred embodiment of the electric concealed hinge, a sleeve is installed on one side of the mounting base, and the electric push rod is installed inside the sleeve.

[0015] The beneficial effects of this utility model are:

[0016] This utility model's electric concealed hinge adopts an electric push rod structure design. The electric push rod drives the three-section connecting structure to rotate, thereby driving the door on the hinge plate to rotate and achieve the purpose of automatic door opening and closing. This electric concealed hinge directly drives the hinge plate through thrust, without the need to convert thrust into torque, which can push heavier doors. It can also be linked with existing smart home systems, and can be remotely controlled via voice, fingerprint, or mobile phone to achieve home intelligence.

[0017] Meanwhile, the electric concealed hinge of this utility model innovatively adopts a three-section connection structure. When the door is opened, the connecting plate of the three-section connection structure will unfold, so that there is sufficient rotation distance between the door and the door frame, avoiding the door hitting the corners of the door frame, and allowing for a larger rotation angle. When the door is closed, the connecting plate of the three-section connection structure will fold and be concealed in the mounting base, reducing the gap between the door and the door frame. Therefore, there is no need to cut a groove in the door, only a groove on one side of the door frame is needed, and the door gap can be kept at about 4mm. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the electric concealed hinge described in this utility model.

[0020] Figure 2 This is a schematic diagram showing the disassembled structure of the electric concealed hinge described in this utility model.

[0021] Figure 3 This is a schematic diagram of the electric push rod and the three-section connection structure described in this utility model.

[0022] Figure 4 This is a top view of the three-section connection structure described in this utility model.

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the mounting base described in this utility model.

[0024] Figure 6This is a schematic diagram of the structure of the first connecting plate described in this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the second connecting plate and the page plate described in this utility model.

[0026] In the picture:

[0027] 1. Mounting base; 101. Base body; 102. Mounting groove; 103. Connecting base; 2. First connecting plate; 201. Circular part; 202. Connecting part; 203. First connecting groove; 3. Second connecting plate; 301. Second connecting groove; 4. Third connecting plate; 5. Electric push rod; 6. Leaf plate; 7. First rotating shaft; 8. Second rotating shaft; 9. Third rotating shaft; 10. Fourth rotating shaft; 11. Planar thrust bearing; 12. U-shaped seat; 13. Pin shaft; 14. Sleeve. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figures 1 to 4 As shown, this utility model provides an electric concealed hinge, including a mounting base 1. The mounting base 1 can be installed on the inner side of a door frame by fasteners. A mounting groove 102 is provided on one side of the mounting base 1. A first connecting plate 2 is movably connected to the mounting groove 102. The first connecting plate 2 can rotate around the mounting groove 102. A sleeve 14 is also installed on one side of the mounting base 1. An electric push rod 5 is installed in the sleeve 14. A through hole is provided on the mounting base 1 at the position corresponding to the sleeve 14. The output shaft of the electric push rod 5 passes through the through hole of the mounting base 1 and is hinged to the first connecting plate 2. When the electric push rod 5 is activated, the electric push rod 5 will push the first connecting plate 2 to rotate, so that the first connecting plate 2 rotates to the inside or outside of the mounting groove 102.

[0033] Meanwhile, a second connecting plate 3 is movably connected to one end of the first connecting plate 2, and a leaf plate 6 is installed on the end of the second connecting plate 3 away from the first connecting plate 2. The leaf plate 6 can be installed on one side of the door body by fasteners. The second connecting plate 3 can drive the door body to rotate around the first connecting plate 2 through the leaf plate 6. A third connecting plate 4 is movably connected to one side of the second connecting plate 3, and the other end of the third connecting plate 4 is movably connected to the mounting groove 102, so that the first connecting plate 2, the second connecting plate 3 and the third connecting plate 4 form a three-section connection structure. The three-section connection structure is triangular in shape.

[0034] When the door needs to be opened, the electric push rod 5 pushes the first connecting plate 2 to rotate outward of the mounting groove 102. The second connecting plate 3 and the third connecting plate 4 will also unfold outward under the drive of the first connecting plate 2. At this time, the included angle between the first connecting plate 2 and the second connecting plate 3 is obtuse, so that there is enough rotation distance between the door and the door frame, avoiding the door from hitting the corners of the door frame. The rotation angle is larger, and the door on the page plate 6 will rotate more than 120° under the drive of the three-section connecting structure, thereby achieving the effect of automatic door opening. In addition, in this embodiment, the door on the page plate 6 is directly driven by inference, without the need to convert the thrust into torque, which can push a heavier door.

[0035] When the door needs to be closed, the electric push rod 5 will drive the first connecting plate 2 to rotate into the mounting groove 102. The second connecting plate 3 and the third connecting plate 4 will retract into the mounting groove 102 under the action of the first connecting plate 2. At this time, the included angle between the first connecting plate 2 and the second connecting plate 3 is an acute angle, so that the three-section connecting structure is folded up and hidden inside the mounting groove 102. At the same time, the leaf plate 6 will also rotate and reset, and fit tightly against the mounting base 1. The distance between the door body and the door frame is almost the thickness of the leaf plate 6, so that the gap between the door body and the door frame can be kept at about 4mm. Therefore, there is no need to cut a groove in the door body, only a groove on one side of the door frame is needed, which simplifies the installation process.

[0036] like Figure 5As shown, the mounting base 1 in this embodiment specifically includes a base body 101, a mounting groove 102 is opened on one side of the base body 101, and a connecting seat 103 is installed at both the upper and lower ends of the mounting groove 102. A first rotating shaft 7 is movably connected between the two connecting seats 103 through a bearing.

[0037] like Figure 6 As shown, the first connecting plate 2 specifically includes an annular portion 201 sleeved on the first rotating shaft 7. The annular portion 201 and the first rotating shaft 7 are tightly fitted, so that the annular portion 201 and the first rotating shaft 7 rotate together. One side of the annular portion 201 extends outward to form a connecting portion 202. The connecting portion 202 and the annular portion 201 are integrally formed, and the connecting portion 202 has an L-shaped structure. The electric push rod 5 is hinged to one side of the connecting portion 202. When it is necessary to open the door, the electric push rod 5 applies a pushing force to the connecting portion 202. Under the action of the pushing force, the connecting portion 202 will drive the annular portion 201 and the first rotating shaft 7 to rotate outward around the mounting groove 102.

[0038] Meanwhile, a first connecting groove 203 is provided at the end of the connecting part 202 away from the annular part 201. A second rotating shaft 8 is installed in the first connecting groove 203. One end of the second connecting plate 3 is sleeved on the second rotating shaft 8 and hinged to the connecting part 202. The second connecting plate 3 and the second rotating shaft 8 are in a loose fit state, so that the second connecting plate 3 can rotate around the second rotating shaft 8.

[0039] like Figure 7 As shown, a second connecting groove 301 is provided in the middle of the second connecting plate 3, and a third rotating shaft 9 is installed in the second connecting groove 301. One end of the third connecting plate 4 is sleeved on the third rotating shaft 9 and hinged to the second connecting plate 3. The third connecting plate 4 and the third rotating shaft 9 are in a loose fit state, so that the third connecting plate 4 can rotate around the third rotating shaft 9.

[0040] Furthermore, a fourth rotating shaft 10 is movably connected between the two connecting seats 103 near the first rotating shaft 7. The end of the third connecting plate 4 away from the second connecting plate 3 is sleeved on the fourth rotating shaft 10 and hinged to the mounting seat 1. The third connecting plate 4 and the fourth rotating shaft 10 are in a loose fit state, allowing the third connecting plate 4 to rotate around the fourth rotating shaft 10. When the electric push rod 5 pushes the first connecting plate 2 to rotate outward from the mounting groove 102, the first connecting plate 2 will also push the second connecting plate 3 and the third connecting plate 4 to move outward. During this process, one end of the third connecting plate 4 will push the second connecting plate 103 to rotate outward from the mounting groove 102. The connecting plate 3 unfolds outward, changing the angle between the second connecting plate 3 and the first connecting plate 2 from an acute angle to an obtuse angle, thus providing sufficient rotation distance between the door and the door frame to prevent the door from hitting the corners of the door frame. When the electric push rod 5 drives the first connecting plate 2 to rotate into the mounting groove 102, the first connecting plate 2 will also pull the second connecting plate 3 inward, while the second connecting plate 3 pulls the third connecting plate 4 inward, changing the angle between the second connecting plate 3 and the first connecting plate 2 from an obtuse angle to an acute angle. The three-section connection structure can be concealed within the mounting groove 102.

[0041] Preferably, after the hinge plate 6 is connected to the door body, the entire hinge will be subjected to a downward force due to the weight of the door, which will affect the rotation of the hinge. In order to reduce the resistance during the opening and closing process of the hinge, in this embodiment, the second rotating shaft 8 located between the second connecting plate 3 and the first connecting groove 203, the third rotating shaft 9 located between the second connecting plate 3 and the second connecting groove 301, and the fourth rotating shaft 10 located between the connecting seat 103 and the third connecting plate 4 are all equipped with planar thrust bearings 11. The planar thrust bearings 11 can support and allow the rotating parts to rotate smoothly when subjected to huge thrust parallel to the axis, thereby meeting the rotation requirements of the hinge.

[0042] Preferably, in order to achieve the hinge connection between the electric push rod 5 and the first connecting plate 2, a U-shaped seat 12 is installed on the back of the connecting part 202 away from the second connecting plate 3. A pin 13 is installed inside the U-shaped seat 12. The output shaft of the electric push rod 5 is sleeved on the pin 13 and hinged to the U-shaped seat 12. When the output shaft of the electric push rod 5 extends, the first connecting plate 2 will also rotate.

[0043] More preferably, the electric push rod 5 in this embodiment can be controlled by a controller, thereby linking with existing smart home systems and enabling remote control via voice, fingerprint, or mobile phone to achieve home intelligence.

[0044] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. An electric concealed hinge, characterized in that, The system includes a mounting base (1), one side of which has a mounting groove (102). A first connecting plate (2) is movably connected to the mounting groove (102). An electric push rod (5) is mounted on one side of the mounting base (1). The output shaft of the electric push rod (5) passes through the mounting base (1) and is hinged to the first connecting plate (2) to push the first connecting plate (2) to rotate around the mounting base (1). A second connecting plate (3) is movably connected to one end of the first connecting plate (2), allowing the second connecting plate (3) to rotate around the first connecting plate (2). The second connecting plate (3) has a leaf plate (6) installed at one end away from the first connecting plate (2), and a third connecting plate (4) is movably connected to one side of the second connecting plate (3). The other end of the third connecting plate (4) is movably connected to the mounting groove (102) adjacent to the first connecting plate (2), so that the first connecting plate (2), the second connecting plate (3) and the third connecting plate (4) form a three-section connection structure. The electric push rod (5) can drive the three-section connection structure to expand out of the mounting groove (102) or retract into the mounting groove (102).

2. The motorized concealed hinge according to claim 1, characterized in that, The mounting base (1) includes a base body (101), the mounting groove (102) is opened on one side of the base body (101), and the upper and lower ends of the mounting groove (102) are equipped with connecting seats (103). The two connecting seats (103) are movably connected to a first rotating shaft (7) through a bearing. The first connecting plate (2) is sleeved on the first rotating shaft (7) and hinged to the mounting base (1).

3. The motorized concealed hinge according to claim 2, characterized in that, The first connecting plate (2) includes an annular portion (201) sleeved on the first rotating shaft (7), and one side of the annular portion (201) extends outward to form a connecting portion (202).

4. The motorized concealed hinge according to claim 3, characterized in that, The connecting part (202) has a first connecting groove (203) at one end away from the annular part (201). A second rotating shaft (8) is installed in the first connecting groove (203). One end of the second connecting plate (3) is sleeved on the second rotating shaft (8) and hinged to the connecting part (202). A planar thrust bearing (11) is installed on the second rotating shaft (8) at the position between the second connecting plate (3) and the first connecting groove (203).

5. The motorized concealed hinge according to claim 4, characterized in that, The second connecting plate (3) has a second connecting groove (301) in the middle. A third rotating shaft (9) is installed in the second connecting groove (301). One end of the third connecting plate (4) is sleeved on the third rotating shaft (9) and hinged to the second connecting plate (3). A planar thrust bearing (11) is installed on the third rotating shaft (9) at the position between the second connecting plate (3) and the second connecting groove (301).

6. The motorized concealed hinge according to claim 5, characterized in that, A fourth rotating shaft (10) is movably connected between the two connecting seats (103) near the first rotating shaft (7). The end of the third connecting plate (4) away from the second connecting plate (3) is sleeved on the fourth rotating shaft (10) and hinged to the mounting seat (1). A planar thrust bearing (11) is installed on the fourth rotating shaft (10) between the connecting seat (103) and the third connecting plate (4).

7. The motorized concealed hinge according to claim 3, characterized in that, The connecting part (202) is provided with a U-shaped seat (12) on the side away from the second connecting plate (3), a pin shaft (13) is installed in the U-shaped seat (12), and the output shaft of the electric push rod (5) is sleeved on the pin shaft (13) and hinged with the U-shaped seat (12).

8. The motorized concealed hinge according to claim 1, characterized in that, One side of the mounting seat (1) is provided with a sleeve (14), and the electric push rod (5) is installed in the sleeve (14).

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