Hinge arm guide structure of hidden damping hinge

Abstract

The utility model relates to a hinge arm guide structure of a hidden damping hinge, which comprises a first connecting seat, a second connecting seat, a hinge arm component and a damping oil cylinder, two sides of one end of the hinge arm component are respectively hinged with a hinge seat, the first connecting seat is provided with a first concave cavity, the two hinge seats are arranged in the first concave cavity, and the other end of the hinge arm component is hinged with the damping oil cylinder. The two ends of the damping oil cylinder are provided with cylinder bases respectively, the other end of the hinge arm assembly is hinged to the two cylinder bases respectively, the second connecting base is provided with a second concave cavity corresponding to the damping oil cylinder, the damping oil cylinder is connected into the second concave cavity through the two cylinder bases, and guide parts are arranged on the left side and the right side of one end of the hinge arm assembly. Guide rail parts are arranged on the inner sides of the two hinged supports corresponding to turning tracks of the guide parts, and the guide parts are in sliding connection with the guide rail parts; the guide part on the hinge arm assembly slides between the opening position and the closing position of the hinge arm assembly along the guide of the guide rail part, so that the opening and closing of the whole hinge arm assembly are smoother, and the bearing strength can be improved.

Description

Technical Field

[0001] The utility model relates to the field of concealed hinges, in particular to a hinge arm guide structure of a concealed damping hinge. Background Art

[0002] The current concealed damping hinge mainly includes a first connecting seat, a second connecting seat, a hinge arm assembly and a damping cylinder. The hinge arm assembly is hinged on both sides at one end thereof. The first connecting seat is provided with a first concave cavity corresponding to one end of the hinge arm assembly. Two hinge seats are arranged in the first concave cavity. The other end of the hinge arm assembly is also hinged to two cylinder seats on both sides respectively. The damping cylinder is connected between the two cylinder seats, and the second connecting seat is provided with a second concave cavity corresponding to the damping cylinder. The damping cylinder is connected in the second concave cavity through the two cylinder seats. When the hinge is used, the hinge is opened and closed by the linkage of the hinge arm assembly. However, the current hinge arm assembly structure lacks a guiding structure during the linkage process, resulting in jamming between the hinge arm assembly joints. During the jamming process, stress in some parts of the hinge arm assembly will increase, which may easily damage the hinge arm assembly. Therefore, further improvements are needed to the advanced damping hinge. Summary of the invention

[0003] The utility model aims to provide a hinge arm guide structure of a concealed damping hinge which has a simple and reasonable structure, is easy to install and has a stable structure.

[0004] The hinge arm guide structure of the concealed damping hinge includes a first connecting seat, a second connecting seat, a hinge arm assembly and a damping cylinder. Hinge seats are hinged on both sides of one end of the hinge arm assembly, and the first connecting seat is provided with a first concave cavity corresponding to one end of the hinge arm assembly. Two hinge seats are arranged in the first concave cavity. The other end of the hinge arm assembly is hinged to the damping cylinder, and cylinder seats are provided at both ends of the damping cylinder. The two sides of the other end of the hinge arm assembly are also hinged to the two cylinder seats, and the second connecting seat is provided with a second concave cavity corresponding to the damping cylinder. The damping cylinder is connected to the second concave cavity through the two cylinder seats. Guide parts are provided on the left and right sides of one end of the hinge arm assembly, and guide rail parts are provided on the inner sides of the two hinge seats corresponding to the flipping track of the guide part, and the guide part is slidably connected to the guide rail part.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the hinge arm assembly includes a third connecting rod, and the left and right sides of one end of the third connecting rod are hinged to the hinge seat through a first pin shaft. The guide rail portion includes a guide groove, and the guide groove is extended in an arc shape along the outer periphery of the first pin shaft.

[0007] As a further solution, the other end of the third connecting rod is hinged with a second pin shaft, and both end heads of the second pin shaft extend into the guide slot, and both end heads of the second pin shaft are also sleeved with roller sleeves that form a clearance fit with the guide slot, and the roller sleeve and the end head combine to form a guide part.

[0008] As a further solution, the hinge arm assembly also includes a first connecting rod and a second connecting rod, the middle parts of the first connecting rod and the second connecting rod are cross-hinged in an X shape through a pin shaft, one end of the first connecting rod is hinged to the damping cylinder through a pin shaft, and the left and right sides of the other end are hinged to the hinge seat through a pin shaft, the left and right sides of one end of the second connecting rod are hinged to the cylinder seat through a pin shaft, and the other end is hinged to the other end of the third connecting rod through the second pin shaft.

[0009] As a further solution, the first connecting rod includes two, the other ends of the two first connecting rods are arranged adjacent to each other through a first sleeve and form a U-shaped structure, the second connecting rod is arranged between the two first connecting rods, and one end of the second connecting rod is provided with a second sleeve and forms a T-shaped structure with the second sleeve; the third connecting rod is a "concave"-shaped structure, and one end of the second connecting rod is hinged in the middle concave position of the third connecting rod. The damping cylinder is connected to a third sleeve placed between the two first connecting rods, and one end of the first connecting rod is hinged to the third sleeve through a pin;

[0010] As a further solution, a first arc-shaped concave surface is provided on the upper surface of the joint between the first connecting rod and the first sleeve; and a second arc-shaped concave surface is provided on the upper surface of the joint between the second connecting rod and the second sleeve.

[0011] As a further solution, guide grooves are provided at both ends of the first concave cavity, and connecting holes are provided at the bottom of the guide grooves. A first adjustment seat is extended from the outer side of the hinge seat to form a linear sliding fit with the guide grooves. A strip through hole is provided on the first adjustment seat corresponding to the connecting hole. The first adjustment seat is connected to the first connecting seat by a locking screw passing through the strip through hole and the connecting hole; the two hinge seats are connected and fixed by a connecting plate.

[0012] As a further solution, 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 and the cylinder barrel are relatively rotatable, the piston is axially slidingly arranged in the cylinder barrel and spirally cooperates 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, a push rod is inserted in the through hole, the energy storage spring is arranged in the cylinder barrel and crimped between the piston and the sealing plug, the interior of the cylinder barrel is also filled with hydraulic oil, and its interior is sealed and separated from the outside; the damping cylinder is horizontally arranged in the second connecting seat, and is respectively connected to the two cylinder seats through the outer ends of the rotating shaft assembly.

[0013] As a further solution, 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 spirally matched with the first rotating shaft, the outer end of the first rotating shaft is provided with a first shaft head, the first shaft head is connected to one of the cylinder seats, the side wall of the first shaft head is provided with an opening, the two ends of the through hole lead to the first guide groove and the opening respectively, the inner end of the second rotating shaft is axially provided with a second guide groove, the second guide groove is axially provided with a sealing plug, the outer end of the second rotating shaft is provided with a second shaft head, the sealing plug is crimped between the energy storage spring and the inner end of the second guide groove, the cylinder seat corresponding to the first shaft head is provided with a first shaft hole matched with the first shaft head, the top surface of the cylinder seat is provided with a screw hole connected with the first shaft hole, a force adjusting screw is provided in the screw hole, and the screw hole passes through the screw hole and extends into the opening; the inner end of the force adjusting screw matches the outer end conical surface of the push rod.

[0014] The hinge arm guide structure of the concealed damping hinge of the utility model has a reasonable structure, simple manufacturing, convenient assembly, reliable guidance and strong applicability. The guide part on the hinge arm assembly slides between the two positions of the open hinge arm assembly and the closed hinge arm assembly along the guidance of the guide rail part, which not only ensures the position stability and installation reliability of the hinge arm assembly, but also strengthens the guiding function of the hinge arm assembly, so that the opening and closing of the entire hinge arm assembly is smoother and the load-bearing strength can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the exploded structure of a hidden damping hinge embodiment.

[0016] Figure 2 A schematic diagram of the structure of the first connecting rod in the utility model.

[0017] Figure 3 A schematic diagram of the structure of the second connecting rod in the utility model.

[0018] Figure 4 It is a schematic diagram of the decomposition structure of the hidden damping in the utility model.

[0019] Figure 5 A schematic diagram of the concealed damping assembly structure in the utility model.

[0020] Figure 6 A schematic diagram of the exploded structure of the second connecting seat and the cylinder seat in the utility model.

[0021] Figure 7 It is a schematic diagram of the exploded structure of the damping oil cylinder in the utility model.

[0022] Figure 8 It is a schematic diagram of the cross-sectional structure of the damping oil cylinder in the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 6 As shown, the hinge arm guide structure of the concealed damping hinge includes a first connecting seat 1, a second connecting seat 2, a hinge arm assembly 3 and a damping cylinder 8, and hinge seats 4 are respectively hinged on both sides of one end of the hinge arm assembly 3, and the first connecting seat 1 is provided with a first concave cavity 101 corresponding to one end of the hinge arm assembly 3, and two hinge seats 4 are arranged in the first concave cavity 101, and the other end of the hinge arm assembly 3 is hinged to the damping cylinder 8, and cylinder seats 5 are respectively provided at both ends of the damping cylinder 8, and the two sides of the other end of the hinge arm assembly 3 are also respectively hinged to the two cylinder seats 5, and the second connecting seat 2 is provided with a second concave cavity 201 corresponding to the damping cylinder 8, and the damping cylinder 8 is connected to the second concave cavity 201 through the two cylinder seats 5, and guide parts are provided on the left and right sides of one end of the hinge arm assembly 3, and guide rail parts are provided on the inner sides of the two hinge seats 4 corresponding to the flipping track of the guide part, and the guide part is slidably connected with the guide rail part.

[0025] The hinge arm guide structure on this damping hinge has a reasonable structure, simple manufacturing, convenient assembly, reliable guidance and strong applicability. The guide part on the hinge arm assembly 3 slides along the guidance of the guide rail part between the two positions of the hinge arm assembly 3 being open and the hinge arm assembly 3 being closed, which not only ensures the position stability and installation reliability of the hinge arm assembly 3, but also strengthens the guiding function of the hinge arm assembly 3, so that the opening and closing of the entire hinge arm assembly 3 is smoother and the load-bearing strength can be improved.

[0026] The hinge arm assembly 3 includes a third connecting rod 33, and the left and right sides of one end of the third connecting rod 33 are hinged to the hinge seat 4 through the first pin shaft 34. The guide rail part includes a guide groove 42, and the guide groove 42 is extended in an arc shape along the outer periphery of the first pin shaft; the arc-shaped guide groove 42 cooperates with the guide part to guide the third connecting rod 33 to slide back and forth with the first pin shaft 34 as the central axis.

[0027] The other end of the third connecting rod 33 is hinged with a second pin shaft 35, and both end heads of the second pin shaft 35 extend into the guide slot 42, and both end heads of the second pin shaft 35 are also sleeved with roller sleeves 36 that form a clearance fit with the guide slot 42, and the roller sleeve 36 and the end head form a guide part; by adding the roller sleeve 36, the opening and closing of the entire hinge arm assembly 3 can be smoother, friction and abnormal noise can be reduced, and the service life can be increased.

[0028] The hinge arm assembly 3 also 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 cross-hinged in an X shape through a pin shaft. One end of the first connecting rod 31 is hinged to the damping cylinder 8 through a pin shaft, and the left and right sides of the other end are hinged to the hinge seat 4 through a pin shaft. The left and right sides of one end of the second connecting rod 32 are hinged to the cylinder seat 5 through a pin shaft, and the other end is hinged to the other end of the third connecting rod 33 through a second pin shaft 35.

[0029] The first connecting rod 31 includes two first connecting rods 31, and the other ends of the two first connecting rods 31 are arranged adjacent to each other through a first shaft sleeve 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 shaft sleeve 321 to form a T-shaped structure with the second shaft sleeve 321; the third connecting rod 33 is a "concave"-shaped structure, and one end of the second connecting rod 32 is hinged in the middle concave position of the third connecting rod 33;

[0030] The damping oil cylinder 8 is connected to a third sleeve 35 placed between the two first connecting rods 31, and one end of the first connecting rod 31 is hinged to the third sleeve 35 through a pin.

[0031] A first arc-shaped concave surface 71 is provided on the upper surface of the joint between the first connecting rod 31 and the first sleeve 311; a second arc-shaped concave surface 72 is provided on the upper surface of the joint between the second connecting rod 32 and the second sleeve 321; arc-shaped concave surfaces are provided on the upper surfaces of the first connecting rod 31 and the second connecting rod 32, so as to disperse or transfer the stress borne by the hinge arm assembly during use, reduce the risk of deformation and fracture of the hinge arm assembly, and increase the service life of the hinge arm assembly.

[0032] Guide grooves 102 are provided at both ends of the first concave cavity 101, and a connecting hole 103 is provided at the bottom of the guide groove 102. A first adjusting seat 41 is extended on the outer side of the hinge seat 4 to form a linear sliding fit with the guide groove 102. A strip through hole 411 is provided on the first adjusting seat 41 corresponding to the connecting hole 103. The first adjusting seat 41 is connected to the first connecting seat 1 by a locking screw 11 passing through the strip through hole 411 and the connecting hole 103; the two hinge seats 4 are connected and fixed by a connecting piece 6.

[0033] Both ends of the second concave cavity 201 are provided with a first support 202 and a second support 203 set at different heights. The outer side of the cylinder seat 5 is extended with a second adjustment seat 51 that matches the first support 202 and the second support 203 in height. The second adjustment seat 51 is rotatably riveted with a lifting adjustment screw 12, which is threadedly connected to the second support 203. The second adjustment seat 51 is also threadedly connected with a fixing screw 13, which passes through the second adjustment seat 51 and abuts against the first support 202.

[0034] like Figure 7 and Figure 8As shown, the damping cylinder 8 includes a cylinder barrel 81, a rotating shaft assembly, a piston 83, an energy storage spring 82 and a sealing plug 87. The rotating shaft assembly and the cylinder barrel 81 are relatively rotatable, the piston 83 is axially slidably arranged in the cylinder barrel 81 and spirally cooperates 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 81, and a push rod 88 is inserted in the through hole, the energy storage spring 82 is arranged in the cylinder barrel 81 and crimped between the piston 83 and the sealing plug 87, the cylinder barrel 81 is also filled with hydraulic oil, and its interior is sealed and separated from the outside; the damping cylinder 8 is horizontally arranged in the second connecting seat 2, and is respectively connected to the two cylinder seats 5 through the outer ends of the rotating shaft assembly.

[0035] The shaft assembly includes a first shaft 84 and a second shaft 89. The inner end of the first shaft 84 is axially provided with a first guide groove. The piston 83 is inserted into the first guide groove and spirally matched with the first shaft 84. The outer end of the first shaft 84 is provided with a first shaft head 843. The first shaft head 843 is connected to one of the cylinder seats 5. The side wall of the first shaft head 843 is provided with an opening 893. The two ends of the through hole lead to the first guide groove and the opening 893 respectively. The inner end of the second shaft 89 is axially provided with a second guide groove. The second guide groove is axially provided with a A sealing plug 87 is provided at the outer end of the second rotating shaft 89 with a second shaft head 891, and the sealing plug 87 is crimped between the energy storage spring 82 and the inner end of the second guide groove, and the cylinder seat 5 corresponding to the first shaft head 843 is provided with a first shaft hole 501 that cooperates with the first shaft head 843, and the top surface of the cylinder seat 5 is provided with a screw hole 502 that is connected to the first shaft hole 501, and a force adjusting screw 503 is provided in the screw hole 502, and extends into the opening 893 through the screw hole 502; the inner end of the force adjusting screw 503 cooperates with the outer end conical surface of the push rod 88.

[0036] The outer circumference of the piston 83 is provided with an annular groove, a spiral groove 831 and a guide block 832 in sequence. The annular groove is located at one end close to the first rotating shaft 84, and a sealing ring is provided outside the annular groove. The piston 83 is provided with a first oil hole running through both ends thereof, and a one-way flow limiting valve 833 is provided in the first oil hole; a roller 834 is provided in the first rotating shaft 84, and the roller 834 is inserted into the spiral groove 831; an axial guide groove 812 is provided on the inner wall of the cylinder 81, and the guide block 832 is exposed outside the first rotating shaft 84 and is linearly slidably matched with the axial guide groove 812.

[0037] The roller 834 is rotatably disposed on the fixed shaft 835 , and both ends of the fixed shaft 835 are fixedly connected to corresponding holes 842 on the first rotating shaft 84 .

[0038] The first shaft head 843 is provided with a through hole, the push rod 88 is spirally connected in the through hole, the inner end of the push rod 88 is provided with a valve needle 861, and the outer periphery of the end of the valve needle 861 close to the push rod 88 is provided with a necking section; the center of the piston 83 is provided with a second oil hole 836 running through both ends thereof, and the end of the piston 83 facing the energy storage spring 82 is provided with a cavity, the first oil hole and the second oil hole 836 are respectively connected to the cavity, and the valve needle 861 is inserted into the second oil hole 836 and has a clearance fit with the second oil hole 836.

[0039] The first rotating shaft 84 is provided with a first shoulder on the periphery corresponding to the first shaft head 843, and a first annular arc groove is provided on the first shoulder. The first shaft head 843 is provided with a first sleeve 851 on the outer sleeve, and a second annular arc groove is provided on the first sleeve 851 facing the first annular arc groove. A plurality of first steel balls are provided between the first annular arc groove and the second annular arc groove. The first sleeve 851 is located in one end of the cylinder 81, and sealing rings are provided between the outer ring surface and the inner ring surface of the first sleeve 851 and the inner wall of the cylinder 81 and the outer periphery of the first shaft head 843 respectively; the outer end side wall of the first shaft head 843 is also provided with a cut surface, and is sleeved with the gear ring 77, and the outer periphery of the gear ring 77 is provided with teeth, wherein a cylinder seat 5 is provided with a first shaft hole 501, and the first shaft hole 501 is interference fit with the teeth on the outer periphery of the gear ring 77.

[0040] A first retaining spring 844 for blocking the first shaft sleeve 851 is further disposed outside the first shaft head 843 .

[0041] A sealing ring is provided between the second rotating shaft 89 and the inner wall of the cylinder 81 ; and a second shaft hole 504 matching with the second rotating shaft 89 is provided on the other cylinder seat 5 .

[0042] The top surfaces of both ends of the first connecting seat 1 and the second connecting seat 2 are provided with connecting ears 15 , and a cover plate 16 is provided on the connecting ears 15 .

[0043] Its working principle is as follows: Assuming that the first connecting seat 1 and the second connecting seat 2 are connected to the door body and the door frame respectively, when the door is opened, the hinge arm assembly drives the cylinder 81 to rotate relative to the shaft assembly, and the cylinder 81 drives the piston 83 to rotate at the same time, and the piston 83 and the first shaft 84 perform a lead screw motion, and the piston 83 moves upward and causes the energy storage spring 82 to be compressed. At the same time, during the rising process of the piston 83, the one-way flow limiting valve 833 opens (allowing a larger amount of oil to pass through) to reduce the resistance of the piston 83.

[0044] When closing the door, the energy storage spring 82 releases its pressure, pushes the piston 83 downward, and drives the cylinder 81 and the hinge arm assembly to rotate in the opposite direction. At this time, the one-way flow limiting valve 833 is closed (oil cannot pass or the amount of oil allowed to pass is small), and the hydraulic oil under the piston 83 can only pass slowly through the gap between the valve needle 861 and the second oil hole 836, which plays the role of slowly closing the door. When the second oil hole 836 of the piston 83 moves down to the necking position of the valve needle 861 (when the door body is close to closing), the gap between the second oil hole 836 and the valve needle 861 increases, and the oil passing speed increases, thereby achieving fast door closing. By rotating the top rod 88, the relative distance between the necking position of the valve needle 861 and the second oil hole 836 is changed, thereby changing the angle of fast door closing. The later the second oil hole 836 reaches the necking position (or does not pass the necking position), the slower the door closing speed, and even the whole process of slow and silent door closing can be achieved.

[0045] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hinge arm guide structure for a concealed damping hinge, comprising a first connecting seat (1), a second connecting seat (2), a hinge arm assembly (3) and a damping oil cylinder (8), wherein one end of the hinge arm assembly (3) is respectively hinged with hinge seats (4) on both sides, the first connecting seat (1) is provided with a first concave cavity (101) corresponding to one end of the hinge arm assembly (3), two hinge seats (4) are arranged in the first concave cavity (101), the other end of the hinge arm assembly (3) is hinged with the damping oil cylinder (8), both ends of the damping oil cylinder (8) are respectively provided with cylinder seats (5), the other end of the hinge arm assembly (3) is also respectively hinged with the two cylinder seats (5), and the second connecting seat (2) is provided with a second concave cavity (201) corresponding to the damping oil cylinder (8), and the damping oil cylinder (8) is connected to the second concave cavity (201) through the two cylinder seats (5), characterized in that: Guide parts are provided on the left and right sides of one end of the hinge arm assembly (3); guide rail parts are provided on the inner sides of the two hinge seats (4) corresponding to the flipping tracks of the guide parts; the guide parts are slidably connected to the guide rail parts.

2. The hinge arm guide structure of the concealed damping hinge according to claim 1, characterized in that: The hinge arm assembly (3) comprises a third connecting rod (33), one end of which is hinged to the hinge seat (4) at left and right sides via a first pin shaft (34), and the guide rail portion comprises a guide slide groove (42), which is arranged to extend in an arc shape along the outer periphery of the first pin shaft.

3. The hinge arm guide structure of the concealed damping hinge according to claim 2, characterized in that: The other end of the third connecting rod (33) is hingedly connected to a second pin shaft (35), and both ends of the second pin shaft (35) extend into the guide slot (42). In addition, both ends of the second pin shaft (35) are sleeved with roller sleeves (36) that form a clearance fit with the guide slot (42), and the roller sleeve (36) and the end heads together form a guide portion.

4. The hinge arm guide structure of the concealed damping hinge according to claim 3, characterized in that: The hinge arm assembly (3) further comprises a first connecting rod (31) and a second connecting rod (32), wherein the middle parts of the first connecting rod (31) and the second connecting rod (32) are cross-hinged in an X-shape via a pin, one end of the first connecting rod (31) is hinged to the damping oil cylinder (8) via a pin, and the left and right sides of the other end are hinged to the hinge seat (4) via a pin, and the left and right sides of one end of the second connecting rod (32) are hinged to the cylinder seat (5) via a pin, and the other end is hinged to the other end of the third connecting rod (33) via a second pin (35).

5. The hinge arm guide structure of the concealed damping hinge according to claim 4, characterized in that: The first connecting rod (31) comprises two first connecting rods (31), the other ends of the two first connecting rods (31) are arranged adjacent to each other via a first shaft sleeve (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 shaft sleeve (321) to form a T-shaped structure with the second shaft sleeve (321); the third connecting rod (33) is in a "concave" shape, and one end of the second connecting rod (32) is hinged in a middle concave position of the third connecting rod (33).

6. The hinge arm guide structure of the concealed damping hinge according to claim 5, characterized in that: A first arc-shaped concave surface (71) is provided on the upper surface of the joint between the first connecting rod (31) and the first shaft sleeve (311); and a second arc-shaped concave surface (72) is provided on the upper surface of the joint between the second connecting rod (32) and the second shaft sleeve (321).

7. The hinge arm guide structure of the concealed damping hinge according to claim 1, characterized in that The first concave cavity (101) is provided with guide grooves (102) at both ends, and a connecting hole (103) is provided at the bottom of the guide groove (102). A first adjustment seat (41) is extended from the outer side of the hinge seat (4) to form a linear sliding fit with the guide groove (102). The first adjustment seat (41) is provided with a strip-shaped through hole (411) corresponding to the connecting hole (103). The first adjustment seat (41) is connected to the first connecting seat (1) by a locking screw (11) passing through the strip-shaped through hole (411) and the connecting hole (103); the two hinge seats (4) are connected and fixed by a connecting sheet (6).

8. The hinge arm guide structure of the concealed damping hinge according to claim 1, characterized in that The second concave cavity (201) is provided with a first support platform (202) and a second support platform (203) at both ends thereof, and a second adjustment seat (51) is extended from the outer side of the cylinder seat (5) and matches the first support platform (202) and the second support platform (203) in height, and the second adjustment seat (51) is rotatably riveted with a lifting adjustment screw (12), which is threadedly connected to the second support platform (203), and a fixing screw (13) is also threadedly connected to the second adjustment seat (51), and the fixing screw (13) passes through the second adjustment seat (51) and abuts against the first support platform (202).

9. The hinge arm guide structure of the concealed damping hinge according to claim 1, characterized in that The damping oil cylinder (8) comprises a cylinder barrel (81), a rotating shaft assembly, a piston (83), an energy storage spring (82) and a sealing plug (87). The rotating shaft assembly and the cylinder barrel (81) are relatively rotatably matched. The piston (83) is axially slidably arranged in the cylinder barrel (81) and spirally matched 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 (81). A push rod (88) is inserted into the through hole. The energy storage spring (82) is arranged in the cylinder barrel (81) and is crimped between the piston (83) and the sealing plug (87). The inside of the cylinder barrel (81) is also filled with hydraulic oil, and its inside is sealed and isolated from the outside. The damping oil cylinder (8) is horizontally arranged in the second connecting seat (2) and is respectively connected to the two cylinder seats (5) through the outer ends of the rotating shaft assembly.

10. The hinge arm guide structure of the concealed damping hinge according to claim 9, characterized in that The rotating shaft assembly comprises a first rotating shaft (84) and a second rotating shaft (89), the inner end of the first rotating shaft (84) is axially provided with a first guide groove, the piston (83) is inserted into the first guide groove and spirally matched therewith, the outer end of the first rotating shaft (84) is provided with a first shaft head (843), the first shaft head (843) is connected to one of the cylinder seats (5), the side wall of the first shaft head (843) is provided with an opening (893), the two ends of the through hole lead to the first guide groove and the opening (893) respectively, the inner end of the second rotating shaft (89) is axially provided with a second guide groove, and a sealing plug (893) is axially provided in the second guide groove. 7), a second shaft head (891) is provided at the outer end of the second rotating shaft (89), a sealing plug (87) is crimped between the energy storage spring (82) and the inner end of the second guide groove, a cylinder seat (5) corresponding to the first shaft head (843) is provided with a first shaft hole (501) matched with the first shaft head (843), a screw hole (502) connected with the first shaft hole (501) is provided on the top surface of the cylinder seat (5), a force adjusting screw (503) is provided in the screw hole (502), and passes through the screw hole (502) and extends into the opening (893); the inner end of the force adjusting screw (503) is matched with the outer end conical surface of the push rod (88).

Images