Hidden three-dimensional adjusting hinge

Abstract

According to the hidden three-dimensional adjusting hinge, on one hand, a first supporting device and a second supporting device are arranged, and a transverse adjusting kidney-shaped hole, a longitudinal adjusting kidney-shaped hole and a depth adjusting structure are arranged, so that the position of the hinge can be finely adjusted according to actual requirements when the hinge is installed; therefore, the installation flexibility is improved. And on the other hand, the connecting device adopts a multi-shaft linkage mechanism, and comprises a fixed shaft, a movable shaft, a connecting shaft and other parts which are matched for use, so that the maximum opening angle of the door leaf or the cover plate can be effectively increased, and a user can conveniently take and place articles.

Description

Technical Field

[0001] The utility model relates to the field of hinges, in particular to a hidden three-dimensional adjustable hinge. Background Art

[0002] Hinges are common mechanical connectors, widely used in doors, windows, furniture, electronic devices, and other applications requiring relative rotational motion. Traditional hinges can only be adjusted in two directions (two dimensions) during installation, limiting their flexibility.

[0003] Furthermore, traditional hinges often have limitations regarding their maximum opening angle. For example, the maximum opening angle of common door hinges is typically less than or equal to 90 degrees, which is clearly insufficient for applications requiring a wider operating range. In particular, specific fields such as medical equipment and the aerospace industry require higher hinge opening angles to better adapt to complex working environments or improve work efficiency. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a hidden three-dimensional adjustable hinge that can solve the problems of poor installation flexibility and small opening and closing angles.

[0005] The utility model provides a hidden three-dimensional adjustable hinge, which includes:

[0006] A first supporting device, comprising a first base and two first movable seats slidably disposed on the first base, the first base being provided with a plurality of first connecting holes, each of the first movable seats being provided with a transverse adjustment waist hole, each of the transverse adjustment waist holes corresponding to each of the first connecting holes;

[0007] A second supporting device, the second supporting device includes a second base, two second movable bases and two depth adjustment structures, the second base is provided with a plurality of longitudinal adjustment holes, each second movable base is slidably disposed on the second base, and a depth adjustment mechanism is disposed between each second movable base and the second base, and each depth adjustment mechanism adjusts each second movable base to move along the depth direction on the second base in a one-to-one correspondence manner; and

[0008] A connecting device, the connecting device includes a first connecting piece, a first fixed shaft, a first movable shaft, a second connecting piece, a second fixed shaft, a second movable shaft and a connecting shaft, the first fixed shaft and the first movable shaft are both arranged on the first connecting piece, the first fixed shaft is fixedly arranged on the first seat body, the first movable shaft is slidably connected to the two second movable seats, the second fixed shaft and the second movable shaft are both arranged on the second connecting piece, the second fixed shaft is arranged on the second seat body, the second movable shaft is slidably connected to the two first movable seats, and the connecting shaft passes through the first connecting piece and the second connecting piece.

[0009] Preferably, the first supporting device further includes two first sliding blocks, the two first sliding blocks are slidably arranged on the two first movable seats in a one-to-one correspondence, and the two first sliding blocks are arranged at both ends of the second movable shaft in a one-to-one correspondence.

[0010] Preferably, each of the first movable seats is provided with a first sliding channel, and each of the first sliding blocks is slidably disposed in each of the first sliding channels in a one-to-one correspondence.

[0011] Preferably, the second supporting device further comprises two second sliding blocks, the two second sliding blocks are slidably arranged on the two second movable seats in a one-to-one correspondence, and the two second sliding blocks are arranged at both ends of the first movable shaft in a one-to-one correspondence;

[0012] Each of the second movable seats is provided with a second sliding channel, and each of the second sliding blocks is slidably disposed in each of the second sliding channels in a one-to-one correspondence.

[0013] Preferably, the hidden three-dimensional adjustment hinge also includes a fixing device, which includes a plurality of first connecting bolts and a plurality of second connecting bolts, each of the first connecting bolts is correspondingly passed through each of the transverse adjustment waist holes and each of the first connecting holes, and the second connecting bolts are correspondingly passed through each of the longitudinal adjustment waist holes.

[0014] Preferably, the second connecting piece includes a second movable part, a second connecting part and a second fixed part connected in sequence, the second movable shaft passes through the second movable part, the connecting shaft passes through the first connecting piece and the second connecting part, and the second fixed shaft passes through the second fixed part.

[0015] Preferably, the first connecting piece includes a first movable part, a first connecting part and a first fixed part connected in sequence, the first movable shaft passes through the first movable part, the connecting shaft passes through the first connecting part and the second connecting part, and the first fixed shaft passes through the first fixed part.

[0016] Preferably, a position-avoiding hole is provided on the first connecting portion, and the second connecting portion is located in the position-avoiding hole.

[0017] Preferably, the center distance of the longitudinal adjustment waist holes is 4mm~9.5mm; and / or

[0018] The center distance of the horizontally adjusted waist holes is 2.8mm to 5.6mm; and / or

[0019] The depth adjustment distance of the depth adjustment mechanism is less than 2 mm.

[0020] Preferably, the depth adjustment mechanism includes two elastic members and a plurality of depth adjustment bolts, the two elastic members are both provided on the second seat body, the two elastic members are respectively supported on the two second movable seats, the depth adjustment screws pass through the second seat body, and the depth adjustment bolts pass through the second movable seats respectively; or

[0021] The depth adjustment mechanism includes a plurality of depth adjustment bolts, each of the depth adjustment bolts passes through the second seat body, and each of the depth adjustment bolts passes through two of the second movable seats.

[0022] The implementation of this utility model has the following beneficial effects:

[0023] The utility model relates to a hidden three-dimensional adjustable hinge. On the one hand, the hidden three-dimensional adjustable hinge is provided with a first supporting device and a second supporting device, and through the provision of a transversely adjustable waist hole, a longitudinally adjustable waist hole and a depth adjustment structure, the position of the hinge can be fine-tuned according to actual needs during installation, thereby improving the flexibility of installation.

[0024] On the other hand, the connecting device adopts a multi-axis linkage mechanism, including fixed axes, movable axes and connecting axes, which can effectively increase the maximum opening angle of the door leaf or cover plate, making it easier for users to take and place items. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same parts in the exemplary embodiments of the present invention.

[0026] Figure 1 This is a schematic structural diagram of a hidden three-dimensional adjustable hinge in some embodiments of the present invention;

[0027] Figure 2 From another perspective Figure 1 The structural diagram of the hidden three-dimensional adjustable hinge shown;

[0028] Figure 3 This is an exploded view of a hidden three-dimensional adjustable hinge in some embodiments of the present invention;

[0029] Figure 4 It is an exploded view of a partial structure of a hidden three-dimensional adjustable hinge in some embodiments of the present invention. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0031] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] Figure 1The hidden three-dimensional adjustable hinge 10 in some embodiments of the present invention is shown. The hidden three-dimensional adjustable hinge 10 is used to support two components to rotate relative to each other. For example, it can drive a door or a cover to rotate relative to a cabinet or a frame.

[0035] like Figures 1 to 4 As shown, the hidden three-dimensional adjustable hinge 10 includes a first supporting device 1, a second supporting device 2 and a connecting device 3. The connecting device 3 is used to connect the first supporting device 1 and the second supporting device 2 so that the first supporting device 1 can rotate relative to the second supporting device 2.

[0036] The first supporting device 1 includes a first base body 11 and two first movable bases 12 slidably arranged on the first base body 11. The first base body 11 is provided with a plurality of first connecting holes 111. Each first movable base 12 is provided with a transverse adjustment waist hole 121. Each transverse adjustment waist hole 121 corresponds to each first connecting hole 111.

[0037] The second supporting device 2 includes a second base body 21, two second movable seats 22 and two depth adjustment structures 23. The second base body 21 is provided with a plurality of longitudinal adjustment waist holes 211. Each second movable seat 22 is slidably set on the second base body 21. A depth adjustment mechanism is provided between each second movable seat 22 and the second base body 21. Each depth adjustment mechanism adjusts each second movable seat 22 to move along the depth direction on the second base body 21 one by one.

[0038] The connecting device 3 includes a first connecting piece 31, a first fixed shaft 32, a first movable shaft 33, a second connecting piece 34, a second fixed shaft 35, a second movable shaft 36 and a connecting shaft 37. The first fixed shaft 32 and the first movable shaft 33 are both arranged on the first connecting piece 31. The first fixed shaft 32 is fixedly arranged on the first seat body 11. The first movable shaft 33 is slidably connected to the two second movable seats 22. The second fixed shaft 35 and the second movable shaft 36 are both arranged on the second connecting piece 34. The second fixed shaft 35 is arranged on the second seat body 21. The second movable shaft 36 is slidably connected to the two first movable seats 12. The connecting shaft 37 passes through the first connecting piece 31 and the second connecting piece 34.

[0039] As will be understood, the first base 11 is the foundational component of the first support mechanism and is typically made of metal or high-strength plastic. Several first connection holes 111 are defined in the first base 11 for securing the first base to a door frame or other fixed structure. Each first movable base 12 is provided with a transverse adjustment hole 121. These transverse adjustment holes 121 correspond to the first connection holes 111 in the first base 11, allowing the first movable base 12 to slide laterally within a certain range, thereby achieving horizontal position adjustment.

[0040] The second base 21, also serving as a foundational component, is equipped with multiple longitudinal adjustment holes 211, allowing the second movable seats 22 to be vertically adjusted. The two second movable seats 22 can slide along the second base 21. A depth adjustment mechanism 23 is installed between each pair of second movable seats 22 and the second base 21. This mechanism can individually adjust the depth of each second movable seat 22 relative to the second base 21, ensuring a precise fit between the door leaf and the frame when closed.

[0041] The first connecting piece 31 is located between the first supporting device 1 and the second supporting device 2, serving as a connection. A first fixed shaft 32 and a first movable shaft 33 are mounted on the first connecting piece. The first fixed shaft 32 is mounted on the first base 11, providing a stable support point. The first movable shaft 33 is slidably connected to the two second movable bases 22, allowing relative movement between the two.

[0042] The second connecting piece 34 is similar to the first connecting piece 31, but is mounted on the opposite side. A second fixed shaft 35 and a second movable shaft 36 are mounted on it. The second fixed shaft 35 is mounted on the second base 21 to ensure structural stability. The second movable shaft 36 is slidably connected to the two first movable bases 12, allowing it to slide between the two first movable bases 12. A connecting shaft 37 passes through the first connecting piece 31 and the second connecting piece 34, tightly connecting the entire hinge system together to form a complete moving unit.

[0043] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10, the first supporting device 1 also includes two first sliding blocks 13, and the two first sliding blocks 13 are slidingly arranged on the two first movable seats 12 in a one-to-one manner, and the two first sliding blocks 13 are arranged at both ends of the second movable shaft 36 in a one-to-one manner.

[0044] It is understandable that each first sliding block 13 is designed to slide along the first movable seat 12. This sliding mechanism can be achieved by embedded guide rails, ball bearings or other low-friction materials to ensure smooth and unimpeded movement.

[0045] The two first sliding blocks 13 are arranged on the two first movable seats 12 in a one-to-one correspondence, and are respectively located at both ends of the second movable shaft 36. Such a layout enables the first sliding blocks 13 to move synchronously with the movement of the second movable shaft 36, thereby maintaining the coordination of the entire system.

[0046] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10 , each first movable seat 12 is provided with a first sliding channel 122 , and each first sliding block 13 is slidably disposed in each first sliding channel 122 in a one-to-one correspondence.

[0047] As will be appreciated, each first movable seat 12 is provided with a first sliding channel 122. This channel can be linear or curved, depending on the design requirements. The inner wall of the first sliding channel 122 is typically precision-machined to ensure a low coefficient of friction, thereby ensuring smooth movement of the first sliding block 13 therein.

[0048] Each first sliding block 13 is configured to slide freely along the corresponding first sliding channel 122. The size and shape of the sliding block 13 match the first sliding channel 122, ensuring that it can move smoothly in the channel without generating excessive gaps.

[0049] It should be noted that the first sliding block 13 is fixed to the first movable seat 12 via the first sliding channel 122, which helps provide an additional support point during the opening and closing of the door or window. When the second movable shaft 36 rotates, the first sliding block 13 slides along the first sliding channel 122, which not only helps to evenly distribute the load but also reduces deformation or wear caused by single-point force.

[0050] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10, the second supporting device 2 further includes two second sliding blocks 24, the two second sliding blocks 24 are slidably disposed on the two second movable seats 22 in a one-to-one correspondence, and the two second sliding blocks 24 are disposed in a one-to-one correspondence at both ends of the first movable shaft 33;

[0051] A second sliding channel 221 is defined on each second movable seat 22 , and each second sliding block 24 is slidably disposed in each second sliding channel 221 in a one-to-one correspondence.

[0052] It is understood that each second sliding block 24 is configured to slide freely along the second sliding channel 221 on the corresponding second movable seat 22. The sliding block 24 can be configured to be made of wear-resistant material to ensure reliability and low friction performance under long-term use.

[0053] Each second movable seat 22 is provided with a second sliding channel 221. The channel can be linear or curved, and the specific shape depends on design requirements.

[0054] It should be noted that the second sliding block 24 is fixed to the second movable seat 22 via the second sliding channel 221, which helps provide an additional support point during the opening and closing of the door or window. When the first movable shaft 33 rotates, the second sliding block 24 slides along the second sliding channel 221, which not only helps to evenly distribute the load but also reduces deformation or wear caused by single-point force.

[0055] like Figures 1 to 4As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10, the hidden three-dimensional adjustable hinge 10 also includes a fixing device 4, which includes a plurality of first connecting bolts 41 and a plurality of second connecting bolts 42. Each first connecting bolt 41 is correspondingly passed through each transverse adjustment waist hole 121 and each first connecting hole 111, and the second connecting bolt 42 is correspondingly passed through each longitudinal adjustment waist hole 211.

[0056] It is understandable that each first connecting bolt 41 can pass through the transverse adjustment waist hole 121 on the first movable seat 12 and the first connecting hole 111 on the first seat body 11. This ensures that the first movable seat 12 can slide laterally and its position can be adjusted and fixed by tightening or loosening the bolts.

[0057] Each second connecting bolt 42 can pass through the longitudinal adjustment waist hole 211 on the second seat body 21. This ensures that the second movable seat 22 can slide longitudinally and adjust and fix its position by tightening or loosening the bolts.

[0058] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10, the second connecting piece 34 includes a second movable part 341, a second connecting part 342 and a second fixed part 343 connected in sequence, the second movable axis 36 passes through the second movable part 341, the connecting axis 37 passes through the first connecting piece 31 and the second connecting part 342, and the second fixed axis 35 passes through the second fixed part 343.

[0059] It can be understood that the second movable portion 341 is located at one end of the second connecting piece 34 and is used to pass the second movable shaft 36. The second movable portion 341 is designed to allow the second movable shaft 36 to rotate freely therein, thereby realizing the opening and closing action of the door or window.

[0060] The second connecting portion 342 is located between the second movable portion 341 and the second fixed portion 343 and is used to pass the connecting shaft 37. The second connecting portion 342 connects the first connecting piece 31 and the second connecting piece 34 to ensure a stable connection between the two.

[0061] The second fixing portion 343 is located at the other end of the second connecting piece 34 and is used to pass through the second fixing shaft 35. The second fixing portion 343 is designed to be fixedly mounted on the second base 21 to provide a stable support point.

[0062] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10, the first connecting piece 31 includes a first movable part 311, a first connecting part 312 and a first fixed part 313 connected in sequence, the first movable axis 33 passes through the first movable part 311, the connecting axis 37 passes through the first connecting part 312 and the second connecting part 342, and the first fixed axis 32 passes through the first fixed part 313.

[0063] It can be understood that the first movable portion 311 is located at one end of the first connecting piece 31 and is used to pass the first movable shaft 33. The first movable portion 311 is configured so that the first movable shaft 33 can rotate freely inside it, thereby realizing the opening and closing action of the door or window.

[0064] The first connecting portion 312 is located between the first movable portion 311 and the first fixed portion 313 and is used to pass through the connecting shaft 37. The first connecting portion 312 connects the first connecting piece 31 and the second connecting piece 34 to ensure a stable connection between the two.

[0065] The first fixing portion 313 is located at the other end of the first connecting piece 31 and is used to pass through the first fixing shaft 32. The first fixing portion 313 is configured to be fixedly mounted on the first base 11 to provide a stable support point.

[0066] like Figures 1 to 4 As shown, in some embodiments of the hidden three-dimensional adjustable hinge 10 , a position-avoiding hole 3121 is provided on the first connecting portion 312 , and the second connecting portion 342 is located in the position-avoiding hole 3121 .

[0067] It can be understood that the avoidance hole 3121 is an opening or groove formed on the first connecting portion 312 of the first connecting piece 31. The avoidance hole 3121 should be configured to ensure that its size and shape can accommodate the second connecting portion 342 and will not affect the insertion of the connecting shaft 37.

[0068] The second connecting portion 342 is a part of the second connecting piece 34 , which is aligned with the first connecting portion 312 through the avoidance hole 3121 , and the connecting shaft 37 passes through the two parts.

[0069] like Figures 1 to 4 As shown, specifically, in some embodiments of the hidden three-dimensional adjustable hinge 10, the center distance of the longitudinal adjustment waist hole 211 is 4mm~9.5mm; and / or

[0070] Adjust the center distance of the waist hole 121 to 2.8mm~5.6mm laterally; and / or

[0071] The depth adjustment distance of the depth adjustment mechanism is less than 2mm.

[0072] It is understood that the center-to-center distance of the longitudinal adjustment waist hole 211 is 4 mm to 9.5 mm. This range is designed to meet the needs of longitudinal position fine-tuning in different application scenarios. A larger center-to-center distance can provide a wider adjustment range, while a smaller center-to-center distance can achieve more precise adjustment.

[0073] The center-to-center distance of the horizontal adjustment waist hole 121 is 2.8mm to 5.6mm. This range is designed to ensure precise position adjustment in the horizontal direction. The smaller center-to-center distance allows the user to make subtle adjustments to achieve the best installation effect.

[0074] The depth adjustment mechanism allows for a depth adjustment range of less than 2mm. This narrow adjustment range is designed to ensure a tight fit between the door or window sash and the frame. This fine-tuning eliminates small gaps caused by manufacturing tolerances or installation errors, improving overall sealing and aesthetics.

[0075] In some embodiments, the depth adjustment mechanism includes two elastic parts and several depth adjustment bolts. The two elastic parts are both arranged on the second seat body. The two elastic parts are respectively supported on the two second movable seats. The depth adjustment screw passes through the second seat body, and each depth adjustment bolt passes through the second movable seat.

[0076] As will be appreciated, two elastic members (such as springs or rubber pads) are provided on the second base, each of which abuts against a second movable seat. The elastic members provide a preload, ensuring that the second movable seat remains tightly attached to the second base even when the depth adjustment bolt is not fully tightened. This preload also helps absorb the impact of closing the door leaf or cover, reducing noise and protecting the hinge assembly.

[0077] Depth adjustment bolts extend through the second base, each threaded through a corresponding second movable base. By rotating these bolts, the user can adjust the installation depth of the second movable base relative to the second base. The bolt design allows for fine adjustments to achieve the desired precision.

[0078] In other embodiments, the depth adjustment mechanism includes a plurality of depth adjustment bolts, each of which passes through the second seat body, and each of which passes through two second movable seats.

[0079] Understandably, while this embodiment eliminates the need for an elastic member, depth adjustment can still be achieved using depth adjustment bolts. Specifically, each depth adjustment bolt passes through the second base, and each bolt passes through a corresponding second movable base. By rotating these bolts, the position of the second movable base relative to the second base can be adjusted, thereby smoothly achieving depth adjustment.

[0080] Furthermore, the depth adjustment bolt and the second movable seat can be configured as a threaded connection, so that by rotating the depth adjustment bolt, the second movable seat can be moved under the support of the thread, thereby achieving position adjustment of the second movable seat in the depth direction.

[0081] The implementation of this utility model has the following beneficial effects:

[0082] The utility model relates to a hidden three-dimensional adjustable hinge. On the one hand, the hidden three-dimensional adjustable hinge is provided with a first supporting device and a second supporting device, and through the provision of a transversely adjustable waist hole, a longitudinally adjustable waist hole and a depth adjustment structure, the position of the hinge can be fine-tuned according to actual needs during installation, thereby improving the flexibility of installation.

[0083] On the other hand, the connecting device adopts a multi-axis linkage mechanism, including fixed axes, movable axes and connecting axes, which can effectively increase the maximum opening angle of the door leaf or cover plate, making it easier for users to take and place items.

[0084] The scheme of the present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphases. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for the present invention. In addition, it can be understood that the steps in the method of the embodiment of the present invention can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present invention can be merged, divided and deleted according to actual needs.

[0085] While various embodiments of the present invention have been described above, the above descriptions are illustrative and non-exhaustive, and are not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A hidden three-dimensional adjustable hinge, characterized in that: include: A first supporting device, comprising a first base and two first movable seats slidably disposed on the first base, the first base being provided with a plurality of first connecting holes, each of the first movable seats being provided with a transverse adjustment waist hole, each of the transverse adjustment waist holes corresponding to each of the first connecting holes; A second supporting device, the second supporting device includes a second base, two second movable bases and two depth adjustment structures, the second base is provided with a plurality of longitudinal adjustment holes, each second movable base is slidably disposed on the second base, and a depth adjustment mechanism is disposed between each second movable base and the second base, each depth adjustment mechanism correspondingly adjusting each second movable base to move along the depth direction on the second base; and A connecting device, the connecting device includes a first connecting piece, a first fixed shaft, a first movable shaft, a second connecting piece, a second fixed shaft, a second movable shaft and a connecting shaft, the first fixed shaft and the first movable shaft are both arranged on the first connecting piece, the first fixed shaft is fixedly arranged on the first seat body, the first movable shaft is slidably connected to the two second movable seats, the second fixed shaft and the second movable shaft are both arranged on the second connecting piece, the second fixed shaft is arranged on the second seat body, the second movable shaft is slidably connected to the two first movable seats, and the connecting shaft passes through the first connecting piece and the second connecting piece.

2. The hidden three-dimensional adjustable hinge according to claim 1, characterized in that: The first supporting device further includes two first sliding blocks, which are slidably arranged on the two first movable seats in a one-to-one correspondence, and the two first sliding blocks are arranged at both ends of the second movable shaft in a one-to-one correspondence.

3. The hidden three-dimensional adjustable hinge according to claim 2, characterized in that: Each of the first movable seats is provided with a first sliding channel, and each of the first sliding blocks is slidably disposed in each of the first sliding channels in a one-to-one correspondence.

4. The hidden three-dimensional adjustable hinge according to claim 2, characterized in that: The second supporting device further includes two second sliding blocks, the two second sliding blocks are slidably arranged on the two second movable seats in a one-to-one correspondence, and the two second sliding blocks are arranged at both ends of the first movable shaft in a one-to-one correspondence; Each of the second movable seats is provided with a second sliding channel, and each of the second sliding blocks is slidably disposed in each of the second sliding channels in a one-to-one correspondence.

5. The hidden three-dimensional adjustable hinge according to claim 1, characterized in that: The hidden three-dimensional adjustable hinge also includes a fixing device, which includes a plurality of first connecting bolts and a plurality of second connecting bolts. The first connecting bolts are respectively passed through the transverse adjustment waist holes and the first connecting holes, and the second connecting bolts are respectively passed through the longitudinal adjustment waist holes.

6. The hidden three-dimensional adjustable hinge according to claim 1, characterized in that: The second connecting piece includes a second movable part, a second connecting part and a second fixed part connected in sequence, the second movable shaft passes through the second movable part, the connecting shaft passes through the first connecting piece and the second connecting part, and the second fixed shaft passes through the second fixed part.

7. The hidden three-dimensional adjustable hinge according to claim 6, characterized in that: The first connecting piece includes a first movable part, a first connecting part and a first fixed part connected in sequence, the first movable shaft passes through the first movable part, the connecting shaft passes through the first connecting part and the second connecting part, and the first fixed shaft passes through the first fixed part.

8. The hidden three-dimensional adjustable hinge according to claim 7, characterized in that: The first connecting portion is provided with an avoidance hole, and the second connecting portion is located in the avoidance hole.

9. The hidden three-dimensional adjustable hinge according to claim 1, characterized in that: The center distance of the longitudinally adjustable waist holes is 4 mm to 9.5 mm; and / or The center distance of the horizontally adjusted waist holes is 2.8mm to 5.6mm; and / or The depth adjustment distance of the depth adjustment mechanism is less than 2 mm.

10. The hidden three-dimensional adjustable hinge according to claim 1, characterized in that: The depth adjustment mechanism includes two elastic members and a plurality of depth adjustment bolts, the two elastic members are both provided on the second seat body, the two elastic members are respectively supported on the two second movable seats, the depth adjustment screws pass through the second seat body, and the depth adjustment bolts pass through the second movable seats respectively; or The depth adjustment mechanism includes a plurality of depth adjustment bolts, each of the depth adjustment bolts passes through the second seat body, and each of the depth adjustment bolts passes through two of the second movable seats.

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