Quickly-assembled and quickly-adjusted hidden hinge

Abstract

The utility model relates to a quick-assembly quick-adjustment type hidden hinge which comprises a left shell assembly, a right shell assembly, a hinge arm assembly and a damping oil cylinder, one end of the hinge arm assembly is respectively hinged with the damping oil cylinder and the left shell assembly in a rotating mode, and the other end of the hinge arm assembly is hinged on the right shell assembly. The right shell assembly comprises a right shell, adjusting seats and connecting seats, each connecting seat is provided with a transverse adjusting through hole and a longitudinal adjusting through hole, adjusting bolts are arranged in the transverse adjusting through holes and the longitudinal adjusting through holes in a penetrating mode, each connecting seat is provided with a transverse sliding groove and a longitudinal sliding groove, the right shell is provided with a longitudinal sliding rail in sliding fit with the longitudinal sliding groove, and the longitudinal sliding rail is provided with a transverse sliding groove and a longitudinal sliding groove. A transverse sliding rail in sliding fit with the transverse sliding groove is arranged at the end of the adjusting seat, and threaded through holes are formed in the longitudinal sliding rail and the transverse sliding rail; according to the hidden hinge, the longitudinal adjusting structure and the transverse adjusting structure are arranged on the connecting base at the same time, so that the hidden hinge can be rapidly assembled and disassembled, and the hidden hinge is convenient to adjust and rapid to operate.

Description

Technical Field

[0001] This utility model relates to the field of hinges, specifically a quick-installation and quick-adjustment concealed hinge. Background Technology

[0002] Existing concealed hinges, such as the one described in Chinese patent document CN201922463124.4, entitled "An Adjustable Hinge," disclose a small left through hole on the left base plate. A screw can be passed through the small left through hole and screwed into the bottom threaded hole. The elongated small left through hole allows the left small bracket to be adjusted laterally to change the position of the large support arm. Each of the two left flange plates has a left through hole, through which a screw can be passed and screwed into the left threaded hole. The left base plate has a bottom threaded hole, through which the elongated left through hole allows the left base plate to be adjusted longitudinally to change the position of the large support arm. In this structure, the lateral and longitudinal adjustment mechanisms are distributed in different positions and in different structures (left small bracket and left base plate), making the hinge unable to achieve quick installation and quick adjustment. The structure is complex and difficult to adjust. Therefore, further improvements and refinements to the current concealed hinges are needed. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned problems and provide a simple and reasonable quick-installation and quick-adjustment concealed hinge, the main function of which is to enable the concealed hinge to be quickly installed, disassembled, and its position adjusted.

[0004] The quick-installation and quick-adjustment concealed hinge includes a left housing assembly, a right housing assembly, a hinge arm assembly, and a damping cylinder. The damping cylinder is hinged inside the left housing assembly. One end of the hinge arm assembly is rotatably hinged to both the damping cylinder and the left housing assembly, and the other end of the hinge arm assembly is hinged to the right housing assembly. The right housing assembly includes a right outer shell, an adjusting seat, and connecting seats located at both ends of the adjusting seat. Each connecting seat has a horizontal adjustment through hole and a vertical adjustment through hole arranged to the left and right, and an adjusting bolt passes through each of the horizontal and vertical adjustment through holes. The connecting seat has a horizontal sliding groove and a vertical sliding groove corresponding to the horizontal and vertical adjustment through holes. The right outer shell has a vertical slide rail that slides with the vertical slide groove. The end of the adjusting seat has a horizontal slide rail that slides with the horizontal slide groove. The vertical and horizontal slide rails have threaded through holes that lock with the corresponding adjusting bolts.

[0005] The objective of this utility model can also be achieved by the following technical measures:

[0006] As a more specific embodiment, one end of the damping cylinder is threadedly connected to a speed regulating valve needle assembly, one end of which extends out of the damping cylinder and is slidably connected to a driven bevel gear. The outer side of the driven bevel gear meshes with a driving bevel gear, and the flange plate is provided with a force adjusting bolt that is fixedly connected to the driving bevel gear.

[0007] As a further embodiment, the right housing assembly also includes a hinge bracket, which is fastened to the middle of the adjustment seat. Both ends of the hinge bracket are provided with hinge seats, and the outer side of the hinge seats is provided with an arc-shaped guide groove. The other end of the hinge arm assembly is provided with guide parts on the left and right sides that slide in cooperation with the arc-shaped guide groove.

[0008] As a further embodiment, the left housing assembly includes a left outer shell and a cylinder bracket. Both ends of the cylinder bracket are provided with cylinder seats, and flange plates extend outward from the cylinder seats. Adjustable bolts are connected to the flange plates. The damping cylinder is connected between the two cylinder seats. A left concave cavity is provided inside the left outer shell. A height adjustment structure is provided between the flange plates and the cylinder bracket. The cylinder bracket is connected to the left concave cavity through the height adjustment structure.

[0009] As a further embodiment, the hinge arm assembly includes a first link and a second link, the middle parts of the first link and the second link are X-shapedly hinged together by a pin; one end of the second link is hinged to the middle of the damping cylinder by a pin, and the other end is hinged between two hinge seats by a pin; one end of the first link is hinged to the two hinge seats on the left and right sides by pins, and the other end is provided with a fixed shaft, on which a rolling sleeve forming a guide portion is sleeved.

[0010] As a further embodiment, the height adjustment structure includes a lifting adjustment bolt and a locking bolt. The flange plate is provided with a first countersunk hole and a second countersunk hole suitable for the lifting adjustment bolt and the locking bolt to pass through. The two ends of the left concave cavity are provided with a support platform. The support platform is provided with a first threaded hole and a second threaded hole for threaded connection with the lifting adjustment bolt and the locking bolt. The lifting adjustment bolt is provided with a support portion that abuts against the lower side of the flange plate.

[0011] As a further embodiment, the first link includes two links, which are inverted V-shaped structures. One end of the two links is spaced apart by a first bushing and forms a U-shaped structure. The second link is disposed between the two links, and one end of the second link is provided with a second bushing and forms a T-shaped structure with the second bushing.

[0012] As a further embodiment, the right outer shell is provided with a right concave cavity, the adjusting seat is movably disposed in the right concave cavity, the two ends of the right concave cavity are provided with a boss on one side, the longitudinal slide rail is disposed on the upper side of the boss, the two ends of the right concave cavity are provided with a clearance position on the other side, the two ends of the adjusting seat extend with end plates adapted to the clearance position, and the transverse slide rail is disposed on the upper side of the end plate.

[0013] As a further embodiment, the damping cylinder includes a cylinder barrel, a rotating shaft assembly, a piston, an energy storage spring, and a sealing plug. The rotating shaft assembly is rotatably coupled to the cylinder barrel. The piston is axially slidably disposed within the cylinder barrel and helically coupled to the rotating shaft assembly. One end of the rotating shaft assembly has a through hole leading to the interior of the cylinder barrel. The speed regulating valve needle assembly and the through hole form a lead screw engagement. The energy storage spring is disposed within the cylinder barrel and pressed between the piston and the sealing plug. The cylinder barrel is also filled with hydraulic oil and its interior is sealed and isolated from the outside. The damping cylinder is horizontally disposed within a cylinder support and is connected to the cylinder seat via the outer end of the rotating shaft assembly.

[0014] As a further embodiment, the rotating shaft assembly includes a first rotating shaft and a second rotating shaft. The inner end of the first rotating shaft is axially provided with a first guide groove. The piston is inserted into the first guide groove and screwed into it. The outer end of the first rotating shaft is provided with a first shaft head, which is connected to one of the cylinder seats. The inner end of the second rotating shaft is axially provided with a second guide groove. A sealing plug is axially provided in the second guide groove. The outer end of the second rotating shaft is provided with a second shaft head. The sealing plug is pressed between the energy storage spring and the inner end of the second guide groove.

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

[0016] This utility model relates to a quick-installation and quick-adjustment concealed hinge. This concealed hinge utilizes a connecting base to simultaneously arrange longitudinal and lateral adjustment structures, enabling the concealed hinge to be quickly installed and disassembled, and also making the concealed hinge easy to adjust and quick to operate. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of one embodiment of the present invention.

[0018] Figure 2 This is an exploded view of the right shell assembly in this utility model.

[0019] Figure 3 This is a schematic diagram of the connecting seat structure in this utility model.

[0020] Figure 4 This is a partial structural diagram of the left shell assembly in this utility model.

[0021] Figure 5 This is a schematic diagram of the fully disassembled hinge structure in this utility model.

[0022] Figure 6 This is an exploded view of the hinge arm assembly in this utility model.

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the damping cylinder in this utility model.

[0024] Figure 8 This is a schematic diagram of the exploded structure of the damping cylinder in this utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] refer to Figures 1 to 8 As shown, the quick-installation and quick-adjustment concealed hinge includes a left housing assembly 1, a right housing assembly 2, a hinge arm assembly 3, and a damping cylinder 4. The damping cylinder 4 is hinged inside the left housing assembly 1. One end of the hinge arm assembly 3 is rotatably hinged to both the damping cylinder 4 and the left housing assembly 1, and the other end of the hinge arm assembly 3 is hinged to the right housing assembly 2. The right housing assembly 2 includes a right outer shell 5, an adjusting seat 6, and connecting seats 7 located at both ends of the adjusting seat 6. Each connecting seat 7 has a horizontally adjustable channel arranged in a long shape on both sides. Adjusting bolts 8 are inserted into the holes 71 and 72, and the horizontal and vertical adjustment through holes 71 and 72. The connecting seat 7 is provided with a horizontal sliding groove 73 and a vertical sliding groove 74 corresponding to the horizontal and vertical adjustment through holes 71 and 72. The right outer shell 5 is provided with a vertical slide rail 51 that slides with the vertical slide rail 74. The end of the adjusting seat 6 is provided with a horizontal slide rail 61 that slides with the horizontal slide rail 73. The vertical slide rail 51 and the horizontal slide rail 61 are provided with threaded through holes 801 that lock with the corresponding adjusting bolts 8.

[0027] This concealed hinge utilizes a connecting seat with both longitudinal and transverse adjustment structures, enabling quick assembly and disassembly, as well as convenient and rapid adjustment. During adjustment, workers can loosen the adjusting bolts 8 corresponding to the transverse adjustment through holes 71 as needed, allowing the adjusting seat 6 to adjust its position relative to the fixed connecting seat 7 along the right outer shell 5. Alternatively, they can loosen the adjusting bolts 8 corresponding to the longitudinal adjustment through holes 72, allowing the connecting seat 7, along with the fixed adjusting seat 6, to adjust its position relative to the right outer shell 5.

[0028] One end of the damping cylinder 4 is threadedly connected to a speed regulating valve needle assembly 9. One end of the speed regulating valve needle assembly 9 extends out of the damping cylinder 4 and is slidably connected to a driven bevel gear 10. The outer side of the driven bevel gear 10 is meshed with a driving bevel gear 11. A force adjusting bolt 12 is provided on the flange plate 152 and is fixedly connected to the driving bevel gear 11.

[0029] In this embodiment, the section of the speed regulating valve needle assembly 9 extending out of the damping cylinder 4 is a hexagonal shaft. The driven bevel gear 10 can slide freely back and forth on the hexagonal shaft, while the driving bevel gear 11 meshes with the outer side of the driven bevel gear 10. Therefore, the driving bevel gear 11 can be limited to the driven bevel gear 10, so that the hexagonal shaft does not need to be equipped with a limiting structure. Furthermore, by utilizing the cooperation between the driving bevel gear 11 and the driven bevel gear 10, the transmission direction can be changed, making it convenient for workers to adjust the buffer force after installation.

[0030] The right housing assembly 2 also includes a hinge bracket 13, which is fastened to the middle of the adjusting seat 6. Both ends of the hinge bracket 13 are provided with hinge seats 131, and the outer side of the hinge seats 131 is provided with an arc-shaped guide rail groove 132. The other end of the hinge arm assembly 3 is provided with guide parts 33 on the left and right sides, which slide in cooperation with the arc-shaped guide rail groove 132. The guide parts on this hinge arm assembly slide between the two positions of the hinge arm assembly 3 being open and closed, guided by the arc-shaped guide rail groove 132, so that the opening and closing of the entire hinge arm assembly 3 is smoother and the load-bearing strength can be improved.

[0031] The middle of the adjusting seat 6 extends horizontally with a connecting platform 63. The connecting platform 63 has threaded holes 631 on the left and right sides. The hinge bracket 13 abuts against the connecting platform 63 and has a connecting through hole 133 corresponding to the threaded hole 631. The hinge bracket 13 is fastened to the adjusting seat 6 by connecting bolts 18 passing through the connecting through hole 133 and the threaded hole 631.

[0032] The left housing assembly 1 includes a left outer shell 14 and a cylinder bracket 15. Both ends of the cylinder bracket 15 are provided with cylinder seats 151. A flange plate 152 extends outward from the cylinder seat 151. An adjusting bolt 12 is connected to the flange plate 152. The damping cylinder 4 is connected between the two cylinder seats 151. A left recess 141 is provided inside the left outer shell 14. A height adjustment structure is provided between the flange plate 152 and the cylinder bracket 15. The cylinder bracket 15 is connected to the left recess 141 through the height adjustment structure. The height of the cylinder bracket 15 can be adjusted after the hinge is installed using the height adjustment structure.

[0033] The hinge arm assembly 3 includes a first connecting rod 31 and a second connecting rod 32. The middle parts of the first connecting rod 31 and the second connecting rod 32 are X-shapedly hinged together by a pin. One end of the second connecting rod 32 is hinged to the middle of the damping cylinder 4 by a pin, and the other end is hinged between two hinge seats 131 by a pin. One end of the first connecting rod 31 is hinged to the two hinge seats 131 on the left and right sides by pins, and the other end is provided with a fixed shaft 331. A roller sleeve 332 forming a guide part 33 is sleeved on the fixed shaft 331. By adding the roller sleeve 332, the opening and closing of the entire hinge arm assembly 3 can be made smoother, which can reduce friction and abnormal noise and improve service life.

[0034] The height adjustment structure includes a lifting adjustment bolt 16 and a locking bolt 17. The flange plate 152 has a first countersunk hole 1521 and a second countersunk hole 1522 suitable for the lifting adjustment bolt 16 and the locking bolt 17 to pass through. The left concave cavity 141 has a support platform 142 at both ends. The support platform 142 has a first screw hole 143 and a second screw hole 144 for threaded connection with the lifting adjustment bolt 16 and the locking bolt 17. The lifting adjustment bolt 16 has a support part 161 that abuts against the lower side of the flange plate 152.

[0035] When adjusting the height, first loosen the locking bolt 17 to release the restriction of the head of the locking bolt 17 on the cylinder bracket 15. Then, turn the lifting adjustment bolt 16. As the upper and lower cylinder bracket 15 ends of the lifting adjustment bolt 16 are lifted by the support part 161, or the support part 161 is lowered, the cylinder bracket 15 has space to descend. After adjusting to the preset height, finally tighten the locking bolt 17 to fix the height of the cylinder bracket 15.

[0036] The first connecting rod 31 includes two rods. The two first connecting rods 31 are in an inverted V-shaped structure. One end of the two first connecting rods 31 is arranged adjacent to each other through a first bushing 311 to form a U-shaped structure. The second connecting rod 32 is arranged between the two first connecting rods 31, and one end of the second connecting rod 32 is provided with a second bushing 321, which forms a T-shaped structure with the second bushing 321.

[0037] The right outer shell 5 has a right concave cavity 501, and the adjusting seat 6 is movably disposed in the right concave cavity 501. The two ends of the right concave cavity 501 have protrusions 52 on one side, and the longitudinal slide rail 51 is disposed on the upper side of the protrusions 52. The two ends of the right concave cavity 501 have clearance positions 53 on the other side. The two ends of the adjusting seat 6 have end plates 62 that are adapted to the clearance positions 53. The transverse slide rail 61 is disposed on the upper side of the end plates 62. The cooperation between the clearance positions 53 and the end plates 62 can limit the adjusting seat 6 to a certain extent, and also make the transverse adjustment through hole 71 and the longitudinal adjustment through hole 72 arranged left and right along the longitudinal direction, saving space and keeping the hinge compact.

[0038] The damping cylinder 4 includes a cylinder barrel 41, a rotating shaft assembly, a piston 42, an energy storage spring 43, and a sealing plug 44. The rotating shaft assembly is rotatably engaged with the cylinder barrel 41. The piston 42 is axially slidably disposed inside the cylinder barrel 41 and is helically engaged with the rotating shaft assembly. One end of the rotating shaft assembly is provided with a through hole leading to the interior of the cylinder barrel 41. The speed regulating valve needle assembly 9 is engaged with the through hole as a lead screw. The energy storage spring 43 is disposed inside the cylinder barrel 41 and is pressed between the piston 42 and the sealing plug 44. The cylinder barrel 41 is also filled with hydraulic oil and its interior is sealed and isolated from the outside. The damping cylinder 4 is horizontally disposed inside the cylinder bracket 15 and is connected to the cylinder seat 151 through the outer end of the rotating shaft assembly.

[0039] The rotating shaft assembly includes a first rotating shaft 45 and a second rotating shaft 46. The inner end of the first rotating shaft 45 is axially provided with a first guide groove 452. The piston 42 is inserted into the first guide groove 452 and screwed into it. The outer end of the first rotating shaft 45 is provided with a first shaft head 451, which is connected to one of the cylinder seats 151. The inner end of the second rotating shaft 46 is axially provided with a second guide groove 461. A sealing plug 44 is axially provided in the second guide groove 461. The outer end of the second rotating shaft 46 is provided with a second shaft head 462. The sealing plug 44 is pressed between the energy storage spring 43 and the inner end of the second guide groove 461.

[0040] The piston 42 is provided with an annular groove, a spiral groove 421 and a guide block 424 in sequence on its outer periphery. The annular groove is located at one end close to the first rotating shaft 45. A sealing ring is provided outside the annular groove. The piston 42 is provided with a first oil passage hole 422 that passes through both ends of the piston. A one-way flow limiting valve 47 is provided in the first oil passage hole 422. A roller 48 is provided inside the first rotating shaft 45 and is inserted into the spiral groove 421. The inner wall of the cylinder 41 is provided with an axial guide groove 411. The guide block 424 protrudes outside the first rotating shaft 45 and slides linearly with the axial guide groove 411.

[0041] The roller 48 is rotatably mounted on the fixed shaft 481, and the two ends of the fixed shaft 481 are fixedly connected to the corresponding holes 453 on the first rotating shaft 45.

[0042] The first shaft head 451 is provided with a through hole. The speed regulating valve needle assembly 9 includes a push rod 91 and a valve needle 92. The push rod 91 is spirally connected in the through hole. One end of the push rod 91 is a hexagonal shaft, and the other end is connected to the valve needle 92. The valve needle 92 has a necked section on the outer periphery of the end near the push rod 91. The piston 42 has a second oil passage hole 423 through both ends of the piston 42. The piston 42 has a cavity at the end facing the energy storage spring 43. The first oil passage hole 422 and the second oil passage hole 423 are respectively connected to the cavity. The valve needle 92 is inserted into the second oil passage hole 423 and is in clearance fit with the second oil passage hole 423. The oil passage speed is adjusted by changing the size of the clearance.

[0043] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A quick-installation and quick-adjustment concealed hinge, comprising a left housing assembly (1), a right housing assembly (2), a hinge arm assembly (3), and a damping cylinder (4), wherein the damping cylinder (4) is hinged inside the left housing assembly (1), one end of the hinge arm assembly (3) is rotatably hinged to the damping cylinder (4) and the left housing assembly (1), and the other end of the hinge arm assembly (3) is hinged to the right housing assembly (2), characterized in that: The right housing assembly (2) includes a right outer shell (5), an adjusting seat (6), and connecting seats (7) placed at both ends of the adjusting seat (6). Each connecting seat (7) has a horizontal adjusting through hole (71) and a vertical adjusting through hole (72) arranged on the left and right sides. Adjusting bolts (8) are inserted in both the horizontal adjusting through hole (71) and the vertical adjusting through hole (72). The connecting seat (7) has a horizontal sliding groove (73) and a vertical sliding groove (74) corresponding to the horizontal adjusting through hole (71) and the vertical adjusting through hole (72). The right outer shell (5) has a vertical sliding rail (51) that slides with the vertical sliding groove (74). The end of the adjusting seat (6) has a horizontal sliding rail (61) that slides with the horizontal sliding groove (73). The vertical sliding rail (51) and the horizontal sliding rail (61) have threaded through holes (801) that lock with the corresponding adjusting bolts (8).

2. The quick-installation, quick-adjustment concealed hinge according to claim 1, characterized in that: One end of the damping cylinder (4) is threadedly connected to a speed regulating valve needle assembly (9). One end of the speed regulating valve needle assembly (9) extends out of the damping cylinder (4) and is slidably connected to a driven bevel gear (10). The outer side of the driven bevel gear (10) is meshed with a driving bevel gear (11). The flange plate (152) is provided with a force adjusting bolt (12) that is fixedly connected to the driving bevel gear (11).

3. The quick-installation, quick-adjustment concealed hinge according to claim 1, characterized in that: The right housing assembly (2) also includes a hinge bracket (13), which is fastened to the middle of the adjusting seat (6). Both ends of the hinge bracket (13) are provided with hinge seats (131), and an arc-shaped guide rail groove (132) is provided on the outer side of the hinge seat (131). The other end of the hinge arm assembly (3) is provided with guide parts (33) on the left and right sides that slide with the arc-shaped guide rail groove (132).

4. The quick-installation, quick-adjustment concealed hinge according to claim 2, characterized in that: The left housing assembly (1) includes a left outer shell (14) and a cylinder bracket (15). Both ends of the cylinder bracket (15) are provided with cylinder seats (151). A flange plate (152) extends outward from the cylinder seat (151). An adjusting bolt (12) is connected to the flange plate (152). The damping cylinder (4) is connected between the two cylinder seats (151). A left concave cavity (141) is provided inside the left outer shell (14). A height adjustment structure is provided between the flange plate (152) and the cylinder bracket (15). The cylinder bracket (15) is connected to the left concave cavity (141) through the height adjustment structure.

5. The quick-installation, quick-adjustment concealed hinge according to claim 4, characterized in that: The hinge arm assembly (3) includes a first link (31) and a second link (32). The middle parts of the first link (31) and the second link (32) are X-shapedly hinged by a pin. One end of the second link (32) is hinged to the middle of the damping cylinder (4) by a pin, and the other end is hinged between two hinge seats (131) by a pin. One end of the first link (31) is hinged to the two hinge seats (131) on the left and right sides by pins, and the other end is provided with a fixed shaft (331). A roller sleeve (332) forming a guide part (33) is sleeved on the fixed shaft (331).

6. The quick-installation and quick-adjustment concealed hinge according to claim 4, characterized in that: The height adjustment structure includes a lifting adjustment bolt (16) and a locking bolt (17). The flange plate (152) is provided with a first countersunk hole (1521) and a second countersunk hole (1522) suitable for the lifting adjustment bolt (16) and the locking bolt (17) to pass through. The left concave cavity (141) is provided with a support platform (142) at both ends. The support platform (142) is provided with a first screw hole (143) and a second screw hole (144) for threaded connection with the lifting adjustment bolt (16) and the locking bolt (17). The lifting adjustment bolt (16) is provided with a support part (161) that abuts against the lower side of the flange plate (152).

7. The quick-installation, quick-adjustment concealed hinge according to claim 5, characterized in that: The first link (31) includes two links. The two links (31) are inverted V-shaped. One end of the two links (31) is spaced apart and adjacent to each other through a first bushing (311) to form a U-shaped structure. The second link (32) is disposed between the two links (31), and one end of the second link (32) is provided with a second bushing (321) and forms a T-shaped structure with the second bushing (321).

8. The quick-installation, quick-adjustment concealed hinge according to claim 1, characterized in that: The right outer shell (5) is provided with a right concave cavity (501), and the adjustment seat (6) is movably disposed in the right concave cavity (501). The two ends of the right concave cavity (501) are provided with a boss (52) on one side, and a longitudinal slide rail (51) is provided on the upper side of the boss (52). The two ends of the right concave cavity (501) are provided with a clearance position (53) on the other side. The two ends of the adjustment seat (6) are extended with end plates (62) adapted to the clearance position (53), and the transverse slide rail (61) is provided on the upper side of the end plate (62).

9. The quick-installation, quick-adjustment concealed hinge according to claim 4, characterized in that: The damping cylinder (4) includes a cylinder barrel (41), a rotating shaft assembly, a piston (42), an energy storage spring (43), and a sealing plug (44). The rotating shaft assembly rotates relative to the cylinder barrel (41). The piston (42) is axially slidably disposed inside the cylinder barrel (41) and helically disposed with the rotating shaft assembly. One end of the rotating shaft assembly is provided with a through hole leading to the inside of the cylinder barrel (41). The speed regulating valve needle assembly (9) and the through hole form a screw engagement. The energy storage spring (43) is disposed inside the cylinder barrel (41) and pressed between the piston (42) and the sealing plug (44). The cylinder barrel (41) is also filled with hydraulic oil and its interior is sealed and isolated from the outside. The damping cylinder (4) is horizontally disposed inside the cylinder bracket (15) and connected to the cylinder seat (151) through the outer end of the rotating shaft assembly.

10. The quick-installation, quick-adjustment concealed hinge according to claim 9, characterized in that: The rotating shaft assembly includes a first rotating shaft (45) and a second rotating shaft (46). The inner end of the first rotating shaft (45) is provided with a first guide groove (452) axially. The piston (42) is inserted into the first guide groove (452) and screwed into it. The outer end of the first rotating shaft (45) is provided with a first shaft head (451). The first shaft head (451) is connected to one of the cylinder seats (151). The inner end of the second rotating shaft (46) is provided with a second guide groove (461) axially. A sealing plug (44) is provided in the second guide groove (461) axially. The outer end of the second rotating shaft (46) is provided with a second shaft head (462). The sealing plug (44) is pressed between the energy storage spring (43) and the inner end of the second guide groove (461).

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