Oil-free hidden hinge

Abstract

The utility model relates to an oil-free hidden hinge which comprises a small blade, a shaft assembly and a large blade, and the shaft assembly comprises a hinge shaft and end covers rotatably installed at the two ends of the hinge shaft; the hinge shaft comprises a shaft body with a larger diameter and inserting parts which are located at the two ends of the shaft body and have smaller diameters, and a first inserting groove is formed in the end, facing the hinge shaft, of the end cover; the small blade is fixedly connected with the hinge shaft; the large blade is fixedly connected with the end cover; the shaft assembly further comprises nylon sleeves installed at the two ends of the hinge shaft, and the outer diameter size of the nylon sleeves is matched with the inner diameter size of the first inserting grooves. A second inserting groove is formed in the end, facing the hinge shaft, of the nylon sleeve, the inserting part is fixedly inserted into the second inserting groove, and the nylon sleeve is movably inserted into the first inserting groove. The hinge is used in cooperation with the base during installation, the base is connected with the door pocket frame groove, the large blade is connected with the base, and the small blade is connected with the door leaf shaft in an inserted mode so that the blade hiding effect can be achieved. And due to the use of the polytetrafluoroethylene nylon sleeve, the oil-free self-lubricating function is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building material accessories, specifically to a hidden hinge without oil. BACKGROUND

[0002] Hinge is an important hardware connecting door leaf and door pocket or connecting cabinet door and cabinet.

[0003] The hinge in prior art is in visible state, which affects the overall appearance of door and door frame; and the hinge shaft needs to be added with lubricating oil regularly to solve the problems of laborious opening and closing and abnormal sound, which is relatively complicated.

[0004] Therefore, a hidden hinge without oil is needed to solve the above problems. CONTENT OF UTILITY MODEL

[0005] In order to solve the above problems, the utility model provides a hidden hinge without oil, which comprises a small blade, a shaft assembly and a large blade, wherein the shaft assembly comprises a hinge shaft and end covers rotatably installed at both ends of the hinge shaft.

[0006] The hinge shaft comprises a shaft body with a larger diameter and plug-in parts with a smaller diameter at both ends of the shaft body, and the end cover is provided with a first insertion slot at one end facing the hinge shaft.

[0007] The small blade is fixedly connected with the hinge shaft, and the large blade is fixedly connected with the end cover.

[0008] The shaft assembly further comprises nylon sleeves installed at both ends of the hinge shaft, and the outer diameter of the nylon sleeve matches the inner diameter of the first insertion slot.

[0009] The nylon sleeve is provided with a second insertion slot at one end facing the hinge shaft, the plug-in part is fixedly inserted into the second insertion slot, and the nylon sleeve is movably inserted into the first insertion slot.

[0010] Further, the shaft body and the plug-in part are integrally formed.

[0011] Further, the small blade is welded to the hinge shaft.

[0012] And / or, the large blade is welded to the end cover.

[0013] Further, the material of the nylon sleeve is polytetrafluoroethylene.

[0014] Further, the shaft assembly further comprises steel balls arranged at both ends of the nylon sleeve.

[0015] The nylon sleeve is provided with a first hemispherical groove at one end away from the hinge shaft, and the bottom of the first insertion slot is provided with a second hemispherical groove, and the size of the steel ball matches the first hemispherical groove and the second hemispherical groove.

[0016] Further, the base is used in screw thread connection between the large blade, and the base is inserted and installed in the door frame groove;

[0017] The small blade is inserted and installed in the door leaf shaft.

[0018] Further, the base comprises a blade connecting part and a door frame connecting part arranged at both ends of the blade connecting part.

[0019] The blade connecting part is used in screw thread connection between the large blade, and the door frame connecting part is inserted and installed in the door frame groove.

[0020] Further, the door frame connecting part is provided with three screw holes arranged in a triangle.

[0021] Compared with the prior art, the hinge has the advantages that:

[0022] 1. The hinge is used in cooperation with the base during installation, and the hard connection of them is realized by machine screw thread connection; the base is connected with the door frame groove, the large blade is connected with the base, and the small blade is inserted and installed in the door leaf shaft, so that the hinge can be repeatedly installed for multiple times, the blade hiding effect can be realized, the convenient use, the simple and beautiful appearance, the high load bearing and the high load capacity can be achieved, the cost can be well controlled, and the hinge has good market potential and value.

[0023] 2. The use of the polytetrafluoroethylene nylon sleeve achieves the oil-free self-lubricating function.

[0024] 3. The steel ball is arranged, so that the nylon sleeve and the end cover are uniformly stressed, the friction is reduced, the rotation is smooth, the load bearing and rotation times are increased, and the service life of the hinge is increased.

[0025] 4. The base is connected in the door frame profile groove, and the base is provided with three screw holes; during installation, workers can adjust the door leaf to be about 1-2mm in the indoor, outdoor and vertical directions according to the actual situation on site, and then perform screw fixing, so that the three-way fine adjustment installation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. In the drawings, like reference numerals refer to like structures throughout the several views, and in which:

[0027] Figure 1 It is a whole structure diagram of the door and the door frame.

[0028] Figure 2 It is Figure 1 A-A direction sectional view.

[0029] Figure 3 As Figure 1 the middle B-B direction view;

[0030] Figure 4 As the first perspective view of the overall structure of the hidden hinge without oil;

[0031] Figure 5 As the second perspective view of the overall structure of the hidden hinge without oil;

[0032] Figure 6 As the overall spread state plan view of the hidden hinge without oil;

[0033] Figure 7 As the explosion view of the hidden hinge without oil;

[0034] Figure 8 As the explosion plan view of the hidden hinge without oil;

[0035] Figure 9 As the base structure view;

[0036] Figure 10 As the base plan view;

[0037] Figure 11 As the base sectional view;

[0038] In the figure, small blade 1, shaft assembly 2, hinge shaft 21, shaft body 211, plug-in part 212, nylon sleeve 22, second insertion groove 221, first half-sphere groove 222, steel ball 23, end cover 24, first insertion groove 241, second half-sphere groove 242, large blade 3, base 4, blade connecting part 41, door sleeve connecting part 42, threaded hole 43, door leaf 100, door sleeve 200. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0040] As Figures 1-11 shown, the present embodiment provides a hidden hinge without oil, which comprises a small blade 1, a shaft assembly 2 and a large blade 3, wherein the shaft assembly 2 comprises a hinge shaft 21 and end covers 24 rotatably installed at both ends of the hinge shaft 21.

[0041] Specifically, the hinge shaft 21 comprises a shaft body 211 with a large diameter and a plug-in part 212 with a small diameter at both ends of the shaft body 211, and the end cover 24 is provided with a first insertion slot 241 at one end of the hinge shaft 21, wherein the plug-in part 212 is rotatably inserted into the first insertion slot 241, so that the end cover 24 is rotatably mounted at both ends of the hinge shaft 21. Preferably, the shaft body 211 and the plug-in part 212 are integrally formed.

[0042] It should be noted that the small blade 1 is fixedly connected to the hinge shaft 21, and the large blade 3 is fixedly connected to the end cover 24, so that the small blade 1 and the large blade 3 form a hinged cooperation. Specifically, the small blade 1 is welded to the hinge shaft 21, and the large blade 3 is welded to the end cover 24.

[0043] It can be understood that the small blade 1 is connected to the door leaf 100, and the large blade 3 is connected to the door pocket 200, so that one end of the door leaf 100 is rotatably mounted to the door pocket 200, so that the door leaf 100 can be closed and opened.

[0044] It should be noted that the conventional hinge, the hinge shaft 21 and the end cover 24 are all made of metal material, and the size of the plug-in part 212 is slightly smaller than the size of the first insertion slot 241, so it is necessary to regularly add lubricating oil into the first insertion slot 241 to solve the problems of laborious opening and closing and abnormal sound.

[0045] In order to eliminate the above-mentioned defects, the oil-free hidden hinge of the present embodiment further comprises a nylon sleeve 22 mounted at both ends of the hinge shaft 21, and the outer diameter of the nylon sleeve 22 matches the inner diameter of the first insertion slot 241.

[0046] Specifically, the nylon sleeve 22 is provided with a second insertion slot 221 at one end of the hinge shaft 21, wherein the plug-in part 212 is fixedly inserted into the second insertion slot 221, and the nylon sleeve 22 is movably inserted into the first insertion slot 241, so that the end cover 24 is rotatably mounted at both ends of the hinge shaft 21.

[0047] Therefore, the use of the nylon sleeve 22 achieves the function of oil-free self-lubrication. Preferably, the material of the nylon sleeve 22 is polytetrafluoroethylene.

[0048] In the present embodiment, the shaft assembly 2 further comprises steel balls 23 arranged at both ends of the nylon sleeve 22, and the nylon sleeve 22 is provided with a first hemispherical groove 222 at one end away from the hinge shaft 21, the bottom of the first insertion slot 241 is provided with a second hemispherical groove 242, and the size of the steel ball 23 matches the size of the first hemispherical groove 222 and the second hemispherical groove 242.

[0049] Through the arrangement of the above-mentioned steel balls 23, the nylon sleeve 22 and the end cover 24 can be uniformly stressed, the friction can be reduced, the rotation can be smooth, the number of rotations and the load buffering can be increased, and the service life of the hinge can be increased.

[0050] In the embodiment, the small leaf 1 is inserted and mounted in the door leaf shaft, and the large leaf 3 is inserted and mounted in the door frame groove, so as to realize the leaf hiding effect. Specifically, the oil-free hidden hinge of the embodiment further comprises a base 4, and the base 4 is threadedly connected with the large leaf 3, and the base 4 is inserted and mounted in the door frame groove.

[0051] Preferably, the base 4 comprises a leaf connecting portion 41 and door frame connecting portions 42 arranged at both ends of the leaf connecting portion 41, the leaf connecting portion 41 is threadedly connected with the large leaf 3, and the door frame connecting portions 42 are inserted and mounted in the door frame groove and are threadedly connected by screws.

[0052] Specifically, the door frame connecting portion 42 is provided with three threaded holes 43 arranged in a triangular shape. Thus, the base 4 is connected in the door frame 200 profile groove, and the base 4 has three screw holes. When installed, the worker can adjust the door leaf 100 to the indoor, outdoor and vertical directions by 1-2 mm according to the actual situation on site, and then fix the screws to realize the three-way adjustable installation.

[0053] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An oil-free concealed hinge comprising a small leaf (1), a shaft assembly (2) and a large leaf (3), wherein, The shaft assembly (2) comprises a hinge shaft (21) and end covers (24) rotatably mounted at both ends of the hinge shaft (21); The hinge shaft (21) comprises a shaft body (211) with a large diameter and plug-in parts (212) with a small diameter at both ends of the shaft body (211), and the end cover (24) is provided with a first insertion slot (241) at one end of the hinge shaft (21); The small blade (1) is fixedly connected to the hinge shaft (21), and the large blade (3) is fixedly connected to the end cover (24); The shaft assembly (2) further comprises nylon sleeves (22) mounted at both ends of the hinge shaft (21), and the outer diameter of the nylon sleeve (22) matches the inner diameter of the first insertion slot (241); The nylon sleeve (22) is provided with a second insertion slot (221) at one end of the hinge shaft (21), the plug-in part (212) is fixedly inserted into the second insertion slot (221), and the nylon sleeve (22) is movably inserted into the first insertion slot (241).

2. The oil-less concealed hinge according to claim 1, characterized in that, The shaft body (211) and the plug-in part (212) are integrally formed.

3. The oil-less concealed hinge according to claim 1, wherein, The small blade (1) is welded to the hinge shaft (21); And / or, the large blade (3) is welded to the end cover (24).

4. The oil-less concealed hinge according to claim 1, wherein The material of the nylon sleeve (22) is polytetrafluoroethylene.

5. The oil-less concealed hinge according to any of claims 1-4, characterized in that, The shaft assembly (2) further comprises steel balls (23) arranged at both ends of the nylon sleeve (22); The nylon sleeve (22) is provided with a first hemispherical groove (222) at one end away from the hinge shaft (21), the bottom of the first insertion slot (241) is provided with a second hemispherical groove (242), and the size of the steel ball (23) matches the first hemispherical groove (222) and the second hemispherical groove (242).

6. The oil-less concealed hinge according to claim 5, wherein Further comprising a base (4), and the base (4) and the large blade (3) are threadedly connected by screws, and the base (4) is inserted and mounted in the door sleeve frame slot; The small blade (1) is inserted and mounted in the door leaf shaft.

7. The oil-less concealed hinge according to claim 6, characterized in that, The base (4) comprises a blade connecting part (41) and door sleeve connecting parts (42) arranged at both ends of the blade connecting part (41); The blade connecting part (41) and the large blade (3) are threadedly connected by screws, and the door sleeve connecting part (42) is inserted and mounted in the door sleeve frame slot.

8. The oil-less concealed hinge according to claim 7, wherein The door sleeve connecting part (42) is provided with three threaded holes (43), and the three threaded holes (43) are arranged in a triangular shape.

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