Hidden hinge

Abstract

The utility model discloses a hidden hinge, and relates to the technical field of hinges. The hidden hinge comprises a rear piece and a front piece, a rotating shaft is clamped in the rear piece, and a hinge rotating shaft is rotationally connected to the surface of the rotating shaft; two second connecting blocks are fixedly connected into the third groove, two second mounting holes are formed in the lower end of the front piece, and two second mounting holes are also formed in the surface of the hinge rotating shaft; fixing screws are in threaded connection with the interiors of the two second connecting blocks correspondingly, and through the symmetrical design of the rear piece and the front piece and the rotary connection of the L-shaped rotating shaft and the hinge rotating shaft, stable rotation of the front piece relative to the rear piece is achieved; the first groove formed in the surface of the rear piece plays a role in containing and positioning the rotating shaft, it is ensured that the rotating shaft is stably installed, abnormal rotation caused by loose installation is avoided, the hinge body is designed in a hidden mode, and the overall structure is simple and attractive. The exposed part of the hinge is reduced, and the risk that the hinge is damaged due to external force is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field, especially relates to hidden hinge. BACKGROUND

[0002] Hinge is used to connect two solids and allow the relative rotation between two mechanical devices, the traditional hinge includes a pair of metal leaves, fan page and frame page, the fan page is fixed on the door leaf, and the frame page is fixed on the door frame. Chinese utility model patent, authorized announcement number "CN218401660U", discloses a hidden hinge, containing left shell and right shell, the left support of left shell is connected with left shell through specific structure, and the right support of right shell also has corresponding connecting mode, and the connection between components is realized through left and right fixed shafts, and the inside is provided with function shaft.

[0003] The above technical scheme does not install the hinge in left and right directions, and has reasonable and beautiful structure, convenient use, easy maintenance and replacement, and can meet the needs of modern social life, but the above technical scheme still has certain defects, the left and right supports of the patent are complete integral structures, the screw strength and support size are required to be high in connection and fixation, and installation is inconvenient and faults are prone to occur, therefore, the utility model provides a novel solution. UTILITY MODEL CONTENT

[0004] The utility model discloses at least solve one of the technical problems in the prior art, provide hidden hinge, can solve the problem that the left and right supports of the patent are complete integral structures, the screw strength and support size are required to be high in connection and fixation, and installation is inconvenient and faults are prone to occur.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: hidden hinge, including rear piece and front piece, the inside of rear piece is clamped with rotating shaft, the surface of rotating shaft is rotatably connected with hinge pivot,

[0006] The surface of rear piece is provided with first recess, the rotating shaft is "L" shape, the surface of front piece is provided with third recess, and the inside of third recess is fixedly connected with two second connecting blocks, and the two second connecting blocks are all cylindrical,

[0007] The lower end of front piece is provided with two second installation holes, and the two second installation holes are communicated with corresponding second connecting blocks respectively, and the surface of hinge pivot is also provided with two second installation holes,

[0008] The inside of two second connecting blocks is all screw connected with fixed screw, and front piece and hinge pivot are fixed through fixed screw.

[0009] Preferably, the surface of the rear piece is provided with a second groove, and a first connecting block is fixedly connected inside the second groove. The surface of the first connecting block is provided with a first mounting hole that penetrates the rear piece and the first connecting block.

[0010] Preferably, the surface of the front piece is provided with the same second groove, and the first connecting block is also fixedly connected inside the second groove;

[0011] The surface of the first connecting block also has a first mounting hole that penetrates the front piece and the first connecting block.

[0012] Preferably, the number of the first connecting block, the first mounting hole and the second groove are each symmetrically arranged in four sets on the surfaces of the rear piece and the front piece.

[0013] Preferably, a first reinforcing rib is fixedly connected to the inner wall of the first groove.

[0014] Preferably, the interior of the third groove is fixedly connected with three second reinforcing ribs, which are composed of two inclined plates and a horizontal plate, and the three second reinforcing ribs are in the shape of "A".

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This concealed hinge, through the symmetrical design of the rear and front panels, combined with the rotational connection between the "L"-shaped rotating shaft and the hinge pivot, achieves smooth rotation of the front panel relative to the rear panel. The first groove on the surface of the rear panel serves to accommodate and position the rotating shaft, ensuring a secure installation and preventing abnormal rotation due to loose installation. The hinge body adopts a concealed design, with the rear panel fixed in the recess of the housing and the front panel connected to the housing by a fixed piece, resulting in a simple and aesthetically pleasing overall structure. At the same time, this design reduces the exposed portion of the hinge, lowering the risk of hinge damage due to external forces. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the concealed hinge structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear piece of this utility model;

[0020] Figure 3 This is a schematic diagram of the front panel of this utility model;

[0021] Figure 4 This is a schematic diagram of the second reinforcing rib of this utility model;

[0022] Figure 5 This is a schematic diagram of the first reinforcing rib of this utility model.

[0023] Reference numerals: 1. Rear piece; 2. Front piece; 3. Rotating shaft; 4. Hinge shaft; 5. First connecting block; 6. First mounting hole; 7. First reinforcing rib; 8. Second mounting hole; 9. Fixing screw; 10. Second connecting block; 11. Second reinforcing rib; 12. First groove; 13. Second groove; 14. Third groove. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Please see Figures 1-5 This utility model provides a technical solution: a concealed hinge, including a rear piece 1 and a front piece 2. A rotating shaft 3 is snapped into the interior of the rear piece 1, and a hinge shaft 4 is rotatably connected to the surface of the rotating shaft 3. A first groove 12 is formed on the surface of the rear piece 1, and the rotating shaft 3 is "L"-shaped. A third groove 14 is formed on the surface of the front piece 2, and two second connecting blocks 10 are fixedly connected inside the third groove 14. Both second connecting blocks 10 are cylindrical. Two second mounting holes 8 are formed at the lower end of the front piece 2, and the two second mounting holes 8 are respectively connected to the corresponding second connecting blocks 10. The surface of the hinge shaft 4 is also formed with two second mounting holes 8. Fixing screws 9 are threaded into the interior of both second connecting blocks 10. The front piece 2 and the hinge shaft 4 are fixed together by fixing screws 9.

[0029] The surface of the rear piece 1 is provided with a second groove 13, and a first connecting block 5 is fixedly connected inside the second groove 13. The surface of the first connecting block 5 is provided with a first mounting hole 6 that passes through the rear piece 1 and the first connecting block 5.

[0030] The surface of the front piece 2 is provided with the same second groove 13, and the interior of the second groove 13 is also fixedly connected to the first connecting block 5. The surface of the first connecting block 5 is also provided with the first mounting hole 6 that penetrates the front piece 2 and the first connecting block 5.

[0031] The number of the first connecting block 5, the first mounting hole 6, and the second groove 13 are all four sets, symmetrically arranged on the surfaces of the rear piece 1 and the front piece 2.

[0032] The inner wall of the first groove 12 is fixedly connected with the first reinforcing rib 7.

[0033] The interior of the third groove 14 is fixedly connected with three second reinforcing ribs 11, which are composed of two inclined plates and a horizontal plate, and are in the shape of "A".

[0034] When using this hinge, the concealed hinge is mainly composed of a rear piece 1 and a front piece 2. The "L"-shaped rotating shaft 3 inside the rear piece 1 is rotatably connected to the hinge shaft 4, providing a basis for the rotation of the front piece 2 relative to the rear piece 1. The first groove 12 opened on the surface of the rear piece 1 plays a role in accommodating and positioning the rotating shaft 3, ensuring that the rotating shaft 3 is stably installed.

[0035] Two cylindrical second connecting blocks 10 fixed in the third groove 14 on the surface of the front piece 2 correspond to the positions of two second mounting holes 8 opened on the surface of the hinge shaft 4. By threading a fixing screw 9 into the second connecting block 10, which passes through the second mounting holes 8 on the surface of the hinge shaft 4, the front piece 2 and the hinge shaft 4 are tightly fixed, so that the front piece 2 can rotate around the rotating shaft 3 with the hinge shaft 4 to realize the opening and closing action.

[0036] Both the rear panel 1 and the front panel 2 have four sets of symmetrically distributed second grooves 13, a first connecting block 5 fixed in the groove, and a first mounting hole 6 penetrating the rear panel 1, the front panel 2 and the first connecting block 5, which can be used to install and connect with the housing, so that the entire concealed hinge can be stably installed in the required position.

[0037] The first reinforcing rib 7 fixed to the inner wall of the groove on the surface of the rear panel 1 enhances the structural strength of the rear panel 1 and improves its load-bearing capacity and durability; the three second reinforcing ribs 11 in the "A" shape in the third groove 14 are composed of two inclined plates and a horizontal plate. This unique structure ensures the connection strength while better adapting to the stress requirements of different installation scenarios and optimizing the overall mechanical performance of the hinge.

[0038] The front piece 2 is fixed to the housing, and the rotating shaft 3 is fixed on the fixed piece to increase the fixing firmness.

[0039] The rear piece 1 is fixed in the rear piece groove in the housing. With the rear piece 1 as the rotation force point, the plastic parts are more stable when installed in the rear piece groove, and will not deform or move during use.

[0040] The overall structure is fixed, with the front panel 2 fixed as a fixed piece and the rear panel 1 fixed to the recessed position of the shell. This increases the fixing strength and ensures that the hinge body will not be affected by fixing factors during the opening and closing of the front panel 2, which would cause large opening and closing errors or abnormal rotation. At the same time, this fixing method is more secure and reduces the risk of the front panel bursting open.

[0041] Furthermore, through the symmetrical design of the rear piece 1 and the front piece 2, combined with the rotational connection between the "L"-shaped rotating shaft 3 and the hinge shaft 4, the front piece 2 can rotate smoothly relative to the rear piece 1. The first groove 12 on the surface of the rear piece 1 serves to accommodate and position the rotating shaft 3, ensuring that the rotating shaft 3 is securely installed and avoiding abnormal rotation caused by loose installation. The hinge body adopts a hidden design, with the rear piece 1 fixed in the groove of the housing and the front piece 2 connected to the housing by a fixed piece. The overall structure is simple and beautiful. At the same time, this design reduces the exposed part of the hinge and reduces the risk of hinge damage caused by external forces.

[0042] Both the rear panel 1 and the front panel 2 have four sets of symmetrically distributed second grooves 13 on their surfaces. The first connecting block 5 is fixed in the groove and connected to the housing through the first mounting hole 6. This modular design not only simplifies the installation process but also facilitates later maintenance and replacement, improving ease of use.

[0043] Structural Description: Rear Panel 1: As the fixing part of the hinge, it is connected to the housing through the first connecting block 5 and the first mounting hole 6, providing a stable mounting base;

[0044] Front panel 2: As the movable part of the hinge, it is fixed to the hinge pivot 4 by the second connecting block 10 and the fixing screw 9 to realize the opening and closing action;

[0045] Rotating shaft 3: It is L-shaped and is snapped into the inside of the rear piece 1. It is rotatably connected to the hinge shaft 4 and provides support for the rotation of the front piece 2.

[0046] Hinge pivot 4: Rotatably connected to the rotating shaft 3 and fixed to the front piece 2 by fixing screw 9, so as to realize the smooth rotation of the front piece 2;

[0047] First groove 12: Opened on the surface of rear piece 1, used to accommodate and position rotating shaft 3, ensuring its secure installation;

[0048] The third groove 14 is formed on the surface of the front piece 2 and has two cylindrical second connecting blocks 10 fixed inside for connecting with the front piece 2 and the hinge shaft 4.

[0049] The second connecting block 10 is cylindrical and fixed in the third groove 14. It is fixed to the hinge shaft 4 by the fixing screw 9 to ensure a tight connection between the front piece 2 and the hinge shaft 4.

[0050] Second mounting hole 8: It is opened on the surface of the front piece 2 and the hinge shaft 4, and is connected by fixing screw 9 to fix the front piece 2 and the hinge shaft 4.

[0051] Fixing screw 9: Threaded into the second connecting block 10, passing through the second mounting hole 8 of the hinge shaft 4, fixing the front piece 2 and the hinge shaft 4;

[0052] The second groove 13 is formed on the surface of the rear piece 1 and the front piece 2, and a first connecting block 5 is fixed inside it for installation and connection with the housing.

[0053] First connecting block 5: fixed in the second groove 13, and connected to the housing through the first mounting hole 6 to ensure the secure installation of the hinge;

[0054] First mounting hole 6: passes through the rear piece 1, the front piece 2 and the first connecting block 5, and is used for fixed connection with the housing;

[0055] First reinforcing rib 7: fixed to the inner wall of the groove on the surface of the rear piece 1, enhancing the structural strength of the rear piece 1 and improving its load-bearing capacity and durability;

[0056] The second reinforcing rib 11 is "A" shaped and fixed in the third groove 14. It consists of two inclined plates and a horizontal plate, which optimizes the mechanical properties of the hinge and adapts to the stress requirements of different installation scenarios.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Concealed hinge, characterized in that: The utility model provides a kind of folding table, including back piece (1) and front piece (2), the inside of back piece (1) is clamped with rotating shaft (3), the surface of rotating shaft (3) is rotatably connected with hinge pivot (4); The surface of back piece (1) is provided with first recess (12), rotating shaft (3) is in the shape of 'L', the surface of front piece (2) is provided with third recess (14), the inside of third recess (14) is fixedly connected with two second connecting blocks (10), two second connecting blocks (10) are in the shape of cylinder; The lower end of front piece (2) is provided with two second mounting holes (8), two second mounting holes (8) are respectively communicated with corresponding second connecting block (10), the surface of hinge pivot (4) is also provided with two second mounting holes (8); The inside of two second connecting blocks (10) is threadedly connected with fixing screw (9), front piece (2) and hinge pivot (4) are fixed by fixing screw (9).

2. The concealed hinge according to claim 1, characterized in that: The surface of back piece (1) is provided with second recess (13), the inside of second recess (13) is fixedly connected with first connecting block (5), the surface of first connecting block (5) is provided with first mounting hole (6) penetrating back piece (1) and first connecting block (5).

3. The concealed hinge according to claim 2, characterized in that: The surface of front piece (2) is also provided with second recess (13), the inside of second recess (13) is also fixedly connected with first connecting block (5); The surface of first connecting block (5) is also provided with first mounting hole (6) penetrating front piece (2) and first connecting block (5).

4. The concealed hinge according to claim 2, wherein: The number of first connecting block (5), first mounting hole (6) and second recess (13) is four, and they are symmetrically arranged on the surface of back piece (1) and front piece (2).

5. The concealed hinge according to claim 1, characterized in that: The inside of first recess (12) is fixedly connected with first reinforcing rib (7).

6. The concealed hinge according to claim 1, characterized in that: The inside of third recess (14) is fixedly connected with three second reinforcing ribs (11), three second reinforcing ribs (11) are composed of two inclined plates and a horizontal plate, and three second reinforcing ribs (11) are in the shape of 'A'.

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