Adjustable convenient hidden damping hinge

Abstract

The invention relates to the technical field of hardware hinges, in particular to an adjustable convenient hidden damping hinge which comprises a first mounting block, a second mounting block, a sliding block, a first rotating shaft, a second rotating shaft, a first hinge piece and a limiting mechanism. The sliding block is vertically installed in the installation cavity of the second installation block in a sliding mode, then the first rotating shaft and the second rotating shaft are connected through the first hinge piece, the position of the sliding block in the installation cavity can be adjusted by unlocking the limiting mechanism, and therefore the height of the door body is adjusted; the position of the door body can be matched with the door frame, the limiting assembly is locked after adjustment is completed, the hinge does not need to be integrally disassembled and re-punched for fixing, convenience and rapidness are achieved, and the working efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of hardware hinges, and in particular to an adjustable convenient hidden damping hinge. Background Art

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two solids and allow them to rotate relative to each other. Hinge is very common in daily life and is widely used in various structures that need to be opened and closed, such as doors, windows, cabinets, drawers, etc. It usually consists of two metal blades and a pin or shaft that allows them to rotate.

[0003] In the related art, reference can be made to the Chinese invention patent with authorization announcement number CN110847733A, which discloses that the hinge includes a first page plate, a second page plate and a rotating shaft, and the first page plate and the second page plate are both pivotally connected to the rotating shaft; the first page plate and the second page plate both include a sandwich panel and reinforcement plates connected to opposite sides of the sandwich panel, and the reinforcement plates are made of fiber-reinforced composite materials.

[0004] After the door frame and the door body are installed, due to the installation accuracy error, in order to ensure that the door frame and the door body can fit together, it is often necessary to adjust the position between the door body and the door frame. However, the positions between the hinge plate, the rotating shaft and the door body are fixed, so when installing the door frame and the door body, the relative position between the door frame and the door body is also fixed. If the door body position is to be adjusted, the hinge and the door body need to be installed again, which is very inconvenient, the work efficiency is very low, and a gap is easily formed between the door body and the door frame. Summary of the invention

[0005] In order to facilitate the adjustment of the relative position between the door frame and the door body when the hinge is installed, the present application provides an adjustable convenient hidden damping hinge.

[0006] The present application provides an adjustable convenient hidden damping hinge, which adopts the following technical solution: An adjustable convenient hidden damping hinge, comprising: A first mounting block and a second mounting block, wherein the first mounting block and the second mounting block are respectively embedded and fixed at the side edges of the door frame and the door body, and a mounting cavity is provided on the side walls opposite to the first mounting block and the second mounting block; A sliding block, wherein the sliding block is vertically slidably disposed in the mounting cavity of the second mounting block; a first rotating shaft, which is rotatably disposed on the first mounting block and is located in the mounting cavity; a second rotating shaft, the second rotating shaft being rotatably disposed on the sliding block; A first sheet, wherein two ends of the first sheet are respectively arranged on a first rotating shaft and a second rotating shaft; A limiting mechanism is arranged on the second mounting block and is used to limit the vertical position of the sliding block in the mounting cavity.

[0007] By adopting the above technical solution, a first mounting block and a second mounting block are respectively embedded and fixed at the sides of the door frame and the door body, the sliding block is vertically slidably installed in the mounting cavity of the second mounting block, and then the first rotating shaft and the second rotating shaft are connected by the first leaf piece. The position of the sliding block in the mounting cavity can be adjusted by unlocking the limiting mechanism, thereby adjusting the height of the door body so that the position of the door body can be adapted to the door frame. After the adjustment is completed, the limiting assembly can be locked without disassembling the entire hinge and re-punching and fixing it. It is convenient and fast with high work efficiency.

[0008] Optionally, the limiting mechanism includes: A limit block, wherein the limit block is arranged on the sliding block and a strip-shaped hole is opened on the limit block along the vertical direction; A limiting screw rod, a threaded hole is opened on the second mounting block, the limiting screw rod is passed through the strip-shaped hole and is threadedly connected with the threaded hole, and the head of the limiting screw rod is tightly pressed against the limiting block.

[0009] By adopting the above technical solution, a strip hole is opened in the vertical direction on the limit block, and the limit screw is loosened. The position of the sliding block can be adjusted by adjusting the position of the limit screw in the strip hole. When the sliding block moves to the target position, the limit screw is turned so that the head of the limit screw is pressed against the limit block. It is convenient and fast with high work efficiency.

[0010] Optionally, a third rotating shaft is rotatably provided on the first mounting block, a fourth rotating shaft is rotatably provided on the sliding block, two second pages are provided on the third rotating shaft and the fourth rotating shaft, and the two second pages are respectively located on both sides of the first page in the vertical direction.

[0011] By adopting the above technical solution, a third rotating shaft and a fourth rotating shaft are set, and then two second leaves are installed on the third rotating shaft and the fourth rotating shaft. The cooperation between the second leaf and the first leaf ensures the stability and smoothness of the door when opening and closing.

[0012] Optionally, both the first sheet and the second sheet are provided with a bending portion, the bending portions of the first sheet and the second sheet are aligned in the vertical direction, the bending portions of the first sheet and the second sheet are provided with mutually connected through holes, and a through shaft is rotatably installed in the through hole.

[0013] By adopting the above technical solution, bending parts are provided on both the first leaf piece and the second leaf piece, and the first leaf piece and the second leaf piece are connected by a through shaft, thereby greatly improving the structural strength and stability of the first leaf piece and the second leaf piece, making it difficult to deform when bearing the weight of the door or window, thereby improving the overall strength and durability of the hinge.

[0014] Optionally, the sliding block is provided with a damping mechanism for providing damping for the rotation work on the fourth rotating shaft, and the damping mechanism includes: A hydraulic damper, wherein the hydraulic damper is arranged on the sliding block; A rotating sleeve, the rotating sleeve is rotatably arranged on the sliding block, a connecting block is arranged on the outer side wall of the rotating sleeve, the connecting block is connected to the fourth rotating shaft, and the rotating sleeve covers the hydraulic damper; A transmission shaft, wherein the transmission shaft is disposed in a rotating sleeve; A movable sleeve, which is arranged on the transmission shaft, is hollow inside, and has an inclined sliding hole opened on the side wall of the movable sleeve along the axial direction of the transmission shaft; A hydraulic push rod, one end of which is slidably disposed on the hydraulic damper, and the other end of which extends into the movable sleeve; A pin, one end of which is arranged on one end of the hydraulic push rod located in the movable sleeve, and the other end of which is slidably installed in the sliding hole.

[0015] By adopting the above technical scheme, a hydraulic damper is installed on the sliding block, and a rotating sleeve is installed on the fourth rotating shaft through the connecting block. Then, when the door body moves and drives the first page and the second page to rotate, the two second pages rotate and drive the fourth rotating shaft to rotate. The rotation of the fourth rotating shaft drives the connecting block and the rotating sleeve to rotate. The rotation of the rotating sleeve drives the transmission shaft to rotate. The rotation of the transmission shaft drives the movable sleeve to rotate. The rotation of the movable sleeve drives the pin to move through the sliding hole. The movement of the pin drives the hydraulic push rod to move. The hydraulic damper adds damping to the rotation of the fourth rotating shaft by applying damping to the hydraulic push rod, thereby adding damping to the rotation of the door body, providing a smooth and controlled door closing experience, reducing the impact and noise generated by the door during the closing process, reducing the loss caused by the mutual movement between the door body and the door frame, and increasing the service life of the door body and the door frame.

[0016] Optionally, a hydraulic cavity is provided inside the hydraulic damper, and a pin adjustment rod is slidably provided on the hydraulic damper. One end of the pin adjustment rod is located outside the hydraulic damper, and the other end of the pin adjustment rod extends into the hydraulic cavity to adjust the compression flow in the hydraulic cavity. An adjustment component is provided on the sliding block, and the adjustment component adjusts the sliding position of the pin adjustment rod.

[0017] By adopting the above technical solution, a push pin adjustment rod is set on the hydraulic damper, and then the position of the push pin adjustment rod is adjusted by the adjustment component, so that the compression flow in the hydraulic cavity of the hydraulic damper is adjusted by the push pin adjustment rod, thereby realizing the work of adjusting the door opening speed.

[0018] Optionally, the adjustment component includes: A first adjusting screw, wherein the first adjusting screw is threadedly connected to the sliding block and the bottom end of the first adjusting screw is connected to the top needle adjusting rod; A first adjusting gear, wherein the first adjusting gear is arranged on the top end of the adjusting screw; A second adjusting screw, wherein the second adjusting screw is threadedly connected to the sliding block, and a hexagonal hole is formed on the head of the second adjusting screw; A second adjusting gear is disposed on the second adjusting screw and meshes with the first adjusting gear.

[0019] By adopting the above technical solution, the second adjusting screw is rotated through the hexagonal hole, the rotation of the second adjusting screw drives the second adjusting gear to rotate, the rotation of the second adjusting gear drives the first adjusting gear to rotate, the rotation of the first adjusting gear drives the first adjusting screw to rotate, and the rotation of the first adjusting screw drives the head needle adjusting rod to move, thereby realizing the position movement of the head needle adjusting rod.

[0020] Optionally, a return spring is sleeved on the transmission shaft, one end of the return spring is connected to the inner bottom wall of the rotating sleeve, and the other end of the return spring abuts against the end of the pin passing through the sliding hole.

[0021] By adopting the above technical solution, a return spring is sleeved on the transmission shaft, and the return spring expands and contracts as the pin moves, so that after the door body moves and drives the pin to move, the return spring can drive the pin back to its original position.

[0022] Optionally, a snap-in groove is provided on the first mounting block and the second mounting block, and a decorative cover plate is provided on the first mounting block and the second mounting block, and a snap-in block is provided on the decorative cover plate, and the snap-in block is snap-fitted with the snap-in groove.

[0023] By adopting the above technical solution, the decorative cover plate is clamped on the first mounting block and the second mounting block through the clamping groove, and a part of the mounting cavity is covered by the decorative cover plate, so that the side of the first mounting block is more beautiful and the dust in the environment will not accumulate inside the mounting cavity.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sliding block is installed by vertically sliding in the installation cavity of the second installation block, and then the first rotating shaft and the second rotating shaft are connected by the first leaf piece. Then, the position of the sliding block in the installation cavity can be adjusted by unlocking the limit mechanism, thereby adjusting the height of the door body so that the position of the door body can be adapted to the door frame. After the adjustment is completed, the limit assembly can be locked, and there is no need to disassemble the hinge as a whole and re-drill and fix it, which is convenient and fast with high work efficiency; 2. By providing a bending portion on both the first leaf piece and the second leaf piece, and connecting the first leaf piece and the second leaf piece through a through shaft, the structural strength and stability of the first leaf piece and the second leaf piece are greatly improved, so that the first leaf piece and the second leaf piece are not easily deformed when bearing the weight of the door or window, thereby improving the overall strength and durability of the hinge; 3. By clamping the decorative cover plate on the first mounting block and the second mounting block through the clamping groove, the decorative cover plate is used to cover part of the mounting cavity, so that the side of the first mounting block is more beautiful and dust in the environment will not accumulate inside the mounting cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present application; Figure 2 is a schematic diagram of the structure of the limiting mechanism in the present application, wherein the side wall of the second mounting block is cut away; Figure 3 is a schematic diagram of the structure of the damping mechanism in the present application, in which the side wall of the rotating sleeve is cut away.

[0026] 1. The camshaft of the first embodiment includes the following: 1. a first mounting block; 1. a second mounting block; 1. a sliding block; 1. a first rotating shaft; 1. a second rotating shaft; 1. a first leaf; 1. a limiting mechanism; 1. a limiting block; 1. a limiting screw; 2. a strip hole; 2. a third rotating shaft; 2. a fourth rotating shaft; 2. a second leaf; 2. a bending portion; 2. a through shaft; 3. a damping mechanism; 3. a hydraulic damper; 3. a rotating sleeve; 3. a transmission shaft; 3. a movable sleeve; 3. a hydraulic push rod; 3. a pin; 3. a connecting block; 3. a sliding hole; 3. a reset spring; 4. a pin adjusting rod; 4. an adjusting assembly; 4. a first adjusting screw; 4. a first adjusting gear; 4. a second adjusting screw; 4. a second adjusting gear; 4. a hexagonal hole; 4. a decorative cover plate; 4. a clamping block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0028] The embodiment of the present application discloses an adjustable convenient hidden damping hinge.

[0029] Reference Figure 1 The adjustable convenient hidden damping hinge includes a first mounting block 11, a second mounting block 12, a sliding block 13, a first rotating shaft 14, a second rotating shaft 15, a first leaf 16 and a limiting mechanism 17. The first mounting block 11 and the second mounting block 12 are respectively embedded and fixed at the side edges of the door frame and the door body. The side walls opposite to the first mounting block 11 and the second mounting block 12 are both provided with mounting cavities.

[0030] Reference Figure 1 The sliding block 13 is vertically slidably mounted in the mounting cavity of the second mounting block 12, and the first rotating shaft 14 is rotatably mounted in the mounting cavity of the first mounting block 11. The second rotating shaft 15 is rotatably mounted on the sliding block 13 and is located in the mounting cavity. The two ends of the first leaf 16 are respectively fixedly mounted on the first rotating shaft 14 and the second rotating shaft 15. The limiting mechanism 17 is arranged on the second mounting block 12 and is used to limit the vertical position of the sliding block 13 in the mounting cavity.

[0031] Reference Figure 2 The limiting mechanism 17 includes a limiting block 18 and a limiting screw 19. The limiting block 18 is fixedly mounted on the upper surface of the sliding block 13. A strip hole 21 is provided on the limiting block 18 in the vertical direction. A threaded hole is provided on the outer wall of the sliding block 13. The limiting screw 19 is slidably inserted into the strip hole 21 and is threadedly connected to the threaded hole. The head of the limiting screw 19 is pressed against the surface of the limiting block 18.

[0032] Reference Figure 2 and Figure 3 A third rotating shaft 22 is rotatably mounted in the mounting cavity of the first mounting block 11, and a fourth rotating shaft 23 is rotatably mounted on the sliding block 13. Two second leaf pieces 24 are fixedly mounted on the third rotating shaft 22 and the fourth rotating shaft 23, and the two second leaf pieces 24 are respectively located on both sides of the first leaf piece 16 in the vertical direction. A bending portion 25 is provided on both the first leaf piece 16 and the second leaf piece 24, and the bending portions 25 of the first leaf piece 16 and the second leaf piece 24 are aligned in the vertical direction. Through holes that are connected to each other are opened on the bending portions 25 of the first leaf piece 16 and the second leaf piece 24, and a through shaft 26 is rotatably mounted in the through hole.

[0033] Reference Figure 2 and Figure 3The sliding block 13 is provided with a damping mechanism 3 for providing damping for the rotation work on the fourth rotating shaft 23. The damping mechanism 3 includes a hydraulic damper 31, a rotating sleeve 32, a transmission shaft 33, a movable sleeve 34, a hydraulic push rod 35 and a pin 36. The hydraulic damper 31 is fixedly mounted on the lower surface of the sliding block 13. The rotating sleeve 32 is rotatably mounted on the sliding block 13 and covers the hydraulic damper 31. A connecting block 37 is fixedly mounted on the outer wall of the rotating sleeve 32, and the connecting block 37 is fixedly connected to the fourth rotating shaft 23. The transmission shaft 33 is fixedly connected to the inner bottom wall of the rotating sleeve 32. The movable sleeve 34 is fixedly mounted on the top of the transmission shaft 33. The movable sleeve 34 is hollow inside, and an inclined sliding hole 38 is opened on the outer side wall of the movable sleeve 34 along the axial direction of the transmission shaft 33. One end of the hydraulic push rod 35 is slidably mounted on the hydraulic damper 31, and the other end of the hydraulic push rod 35 extends into the movable sleeve 34. One end of the pin 36 is fixedly mounted on one end of the hydraulic push rod 35 located in the movable sleeve 34 , and the other end of the pin 36 is slidably mounted in the sliding hole 38 .

[0034] Reference Figure 2 and Figure 3 When the door moves and drives the first leaf 16 and the second leaf 24 to rotate, the two second leafs 24 rotate and drive the fourth shaft 23 to rotate, the fourth shaft 23 rotates and drives the connecting block 37 and the rotating sleeve 32 to rotate, the rotating sleeve 32 rotates and drives the transmission shaft 33 to rotate, the transmission shaft 33 rotates and drives the movable sleeve 34 to rotate, the movable sleeve 34 rotates and drives the pin 36 to move through the sliding hole 38, and the pin 36 moves and drives the hydraulic push rod 35 to move. The hydraulic damper 31 adds damping to the rotation of the fourth shaft 23 by applying damping to the hydraulic push rod 35, thereby adding damping to the rotation of the door body, providing a smooth and controlled door closing experience, reducing the impact and noise generated by the door during the closing process, and increasing the service life of the door body and the door frame.

[0035] Reference Figure 3 A return spring 39 is sleeved on the transmission shaft 33, one end of the return spring 39 is connected to the inner bottom wall of the rotating shaft sleeve 32, and the other end of the return spring 39 abuts against the end of the pin 36 that passes through the sliding hole 38. Therefore, after the door body moves and drives the pin 36 to move, the return spring 39 can drive the pin 36 to move back to its original position.

[0036] Reference Figure 2 and Figure 3 A hydraulic cavity is provided inside the hydraulic damper 31, and a pin adjustment rod 41 is slidably mounted on the hydraulic damper 31. One end of the pin adjustment rod 41 is located outside the hydraulic damper 31, and the other end of the pin adjustment rod 41 extends into the hydraulic cavity to adjust the compression flow in the hydraulic cavity. An adjustment component 42 is provided on the sliding block 13, and the adjustment component 42 adjusts the sliding position of the pin adjustment rod 41.

[0037] Reference Figure 2 and Figure 3 The adjustment assembly 42 includes a first adjustment screw 43, a first adjustment gear 44, a second adjustment screw 45 and a second adjustment gear 46. The first adjustment screw 43 is threadedly connected to the upper surface of the sliding block 13 and the bottom end is connected to the head pin adjustment rod 41. The first adjustment gear 44 is fixedly connected to the top of the adjustment screw. The second adjustment screw 45 is threadedly connected to the upper surface of the sliding block 13 and the head is provided with a hexagonal hole 47. The second adjustment gear 46 is fixedly installed on the top of the second adjustment screw 45 and meshes with the first adjustment gear 44.

[0038] Reference Figure 3 The second adjusting screw 45 is rotated through the hexagonal hole 47, the second adjusting screw 45 rotates to drive the second adjusting gear 46 to rotate, the second adjusting gear 46 rotates to drive the first adjusting gear 44 to rotate, the first adjusting gear 44 rotates to drive the first adjusting screw 43 to rotate, the first adjusting screw 43 rotates to drive the top needle adjusting rod 41 to move, thereby realizing the position movement of the top needle adjusting rod 41.

[0039] Reference Figure 1 The first mounting block 11 and the second mounting block 12 are provided with a snap-in groove on their sides at the opening of the mounting cavity, and the first mounting block 11 and the second mounting block 12 are both covered with a decorative cover plate 48, and a snap-in block 49 that snaps into the snap-in groove is fixedly mounted on the decorative cover plate 48. The decorative cover plate 48 covers part of the mounting cavity.

[0040] The working principle of the embodiment of the present application is as follows: The sliding block 13 is installed by vertical sliding in the installation cavity of the second installation block 12, and then the first rotating shaft 14 and the second rotating shaft 15 are connected by the first leaf piece 16. Then, by loosening the limit screw 19, the position of the sliding block 13 in the installation cavity can be adjusted, thereby adjusting the height of the door body so that the position of the door body can be adapted to the door frame. After the adjustment is completed, the limit screw 19 is screwed so that the head of the limit screw 19 is pressed against the limit block 18, without disassembling the hinge as a whole and re-drilling and fixing it, which is convenient and fast with high work efficiency.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable convenient hidden damping hinge, characterized by: include: A first mounting block (11) and a second mounting block (12), wherein the first mounting block (11) and the second mounting block (12) are respectively embedded and fixed at the side edges of the door frame and the door body, and a mounting cavity is provided on the side walls opposite to the first mounting block (11) and the second mounting block (12); A sliding block (13), wherein the sliding block (13) is vertically slidably arranged in a mounting cavity of the second mounting block (12); A first rotating shaft (14), the first rotating shaft (14) being rotatably disposed on the first mounting block (11) and being located in the mounting cavity; A second rotating shaft (15), the second rotating shaft (15) being rotatably disposed on the sliding block (13); A first sheet (16), wherein two ends of the first sheet (16) are respectively arranged on the first rotating shaft (14) and the second rotating shaft (15); A limiting mechanism (17), wherein the limiting mechanism (17) is arranged on the second mounting block (12) and is used to limit the vertical position of the sliding block (13) in the mounting cavity.

2. The adjustable convenient hidden damping hinge according to claim 1, characterized in that: The limiting mechanism (17) comprises: A limit block (18), wherein the limit block (18) is arranged on the sliding block (13), and a strip-shaped hole (21) is provided on the limit block (18) along the vertical direction; A limiting screw (19), wherein a threaded hole is provided on the second mounting block (12), the limiting screw (19) is passed through the strip hole (21) and is threadedly connected to the threaded hole, and the head of the limiting screw (19) is tightly pressed against the limiting block (18).

3. The adjustable convenient hidden damping hinge according to claim 1, characterized in that: A third rotating shaft (22) is rotatably arranged on the first mounting block (11), a fourth rotating shaft (23) is rotatably arranged on the sliding block (13), two second leaf pieces (24) are arranged on the third rotating shaft (22) and the fourth rotating shaft (23), and the two second leaf pieces (24) are respectively located on both sides of the first leaf piece (16) in the vertical direction.

4. The adjustable convenient hidden damping hinge according to claim 3, characterized in that: The first sheet (16) and the second sheet (24) are both provided with a bending portion (25), the bending portions (25) of the first sheet (16) and the second sheet (24) are aligned in the vertical direction, and the bending portions (25) of the first sheet (16) and the second sheet (24) are provided with through holes that are connected to each other, and a through shaft (26) is rotatably installed in the through hole.

5. The adjustable convenient hidden damping hinge according to claim 4, characterized in that: The sliding block (13) is provided with a damping mechanism (3) for providing damping for the rotation work on the fourth rotating shaft (23), and the damping mechanism (3) comprises: A hydraulic damper (31), wherein the hydraulic damper (31) is arranged on the sliding block (13); A rotating sleeve (32), the rotating sleeve (32) being rotatably disposed on the sliding block (13), a connecting block (37) being disposed on an outer side wall of the rotating sleeve (32), the connecting block (37) being connected to the fourth rotating shaft (23), and the rotating sleeve (32) sheathing the hydraulic damper (31); A transmission shaft (33), wherein the transmission shaft (33) is disposed in the rotating sleeve (32); A movable sleeve (34), the movable sleeve (34) being arranged on the transmission shaft (33), the movable sleeve (34) being hollow inside, and an inclined sliding hole (38) being opened on a side wall of the movable sleeve (34) along the axial direction of the transmission shaft (33); A hydraulic push rod (35), one end of which is slidably disposed on the hydraulic damper (31), and the other end of which extends into the movable sleeve (34); A pin (36), one end of which is arranged on one end of the hydraulic push rod (35) located in the movable sleeve (34), and the other end of which is slidably installed in the sliding hole (38).

6. The adjustable convenient hidden damping hinge according to claim 5, characterized in that: A hydraulic cavity is provided inside the hydraulic damper (31), and a pin adjustment rod (41) is slidably provided on the hydraulic damper (31). One end of the pin adjustment rod (41) is located outside the hydraulic damper (31), and the other end of the pin adjustment rod (41) extends into the hydraulic cavity to adjust the compression flow in the hydraulic cavity. An adjustment component (42) is provided on the sliding block (13), and the adjustment component (42) adjusts the sliding position of the pin adjustment rod (41).

7. The adjustable convenient hidden damping hinge according to claim 6, characterized in that: The adjustment component (42) comprises: A first adjusting screw (43), wherein the first adjusting screw (43) is threadedly connected to the sliding block (13) and the bottom end of the first adjusting screw (43) is connected to the pin adjusting rod (41); A first adjusting gear (44), wherein the first adjusting gear (44) is arranged on the top end of the adjusting screw; A second adjusting screw (45), wherein the second adjusting screw (45) is threadedly connected to the sliding block (13), and a hexagonal hole (47) is formed at the head of the second adjusting screw (45); A second adjusting gear (46), wherein the second adjusting gear (46) is disposed on the second adjusting screw (45) and meshes with the first adjusting gear (44).

8. The adjustable convenient hidden damping hinge according to claim 5, characterized in that: A return spring (39) is sleeved on the transmission shaft (33), one end of the return spring (39) is connected to the inner bottom wall of the rotating shaft sleeve (32), and the other end of the return spring (39) abuts against an end of the pin (36) that passes through the sliding hole (38).

9. The adjustable convenient hidden damping hinge according to claim 1, characterized in that: The first mounting block (11) and the second mounting block (12) are both provided with a snap-in groove, the first mounting block (11) and the second mounting block (12) are both covered with a decorative cover plate (48), the decorative cover plate (48) is provided with a snap-in block (49), and the snap-in block (49) is snap-fitted with the snap-in groove.

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