Hinge structure

Abstract

The utility model discloses a hinge structure which comprises a shell internally provided with a containing groove, the containing groove comprises a left side face, a right side face, a front face, a rear face and a bottom face, and the top of the containing groove is provided with an opening, and the hinge structure is characterized in that a first shaft body is fixedly installed between the left side face and the right side face in the containing groove; a second shaft body is fixedly installed at the position, located above the first shaft body, between the left side face and the right side face in the containing groove, a first rocker arm is rotationally arranged on the first shaft body, a second rocker arm is rotationally arranged on the second shaft body, and the first rocker arm comprises two ends which are the first hinged end and the second hinged end hinged to the first shaft body. According to the utility model, the third swing arm has a larger angle extending out of the accommodating groove, and the first swing arm, the second swing arm and the third swing arm are allowed to have thicker material design, so that the structural strength is better, the stability is better during use, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of door fittings, and more specifically, to a hinge structure. Background Art

[0002] The prior art CN218347164U discloses a hinge structure, including a receiving box and a functional shaft disposed in the receiving box. It is characterized in that a connecting shaft is further included. One end of the connecting shaft is connected to the functional shaft, and a plurality of insertion holes for an external tool to be inserted to drive the connecting shaft to rotate are provided along the circumferential direction of the other end. A notch for the external tool to enter and exit the receiving box is provided on the receiving box corresponding to the position of the insertion holes. By adopting the above technical solution, the utility model provides a hinge structure which is convenient for the insertion of an external tool, and is convenient and fast to rotate the adjustment shaft without slipping.

[0003] The above hinge structure needs to be grooved on the door leaf and the door frame respectively, resulting in inconvenient installation. Summary of the Invention

[0004] The utility model overcomes the deficiencies of the prior art and provides a hinge structure with reasonable structural design. Through the improvement and cooperation of the internal receiving groove of the housing and the structures of the first swing arm, the second swing arm and the third swing arm, the third swing arm has a larger angle of extending out of the receiving groove, and allows the first swing arm, the second swing arm and the third swing arm to have a thicker material design, so that the structural strength is better, the stability during use is better, and the service life is longer.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A hinge structure includes a housing with an accommodation groove. The accommodation groove includes a left side, a right side, a front, a rear, and a bottom. The top of the accommodation groove is open. A first shaft body is fixedly installed between the left side and the right side in the accommodation groove. A second shaft body is fixedly installed between the left side and the right side in the accommodation groove above the first shaft body. A first rocker arm is rotatably arranged on the first shaft body, and a second rocker arm is rotatably arranged on the second shaft body. The first rocker arm includes two ends, namely a first hinge end and a second hinge end hinged to the first shaft body. The second rocker arm includes two ends, namely a third hinge end and a fourth hinge end hinged to the second shaft body. A third shaft body passes through the first hinge end, and a fourth shaft body passes through the third hinge end. It further includes a third rocker arm. The third rocker arm includes two ends, namely a fifth hinge end and a mounting plate fixed or integrally formed with the third rocker arm. The third rocker arm is provided with an intermediate hinge portion between the fifth hinge end and the mounting plate. The fifth hinge end is rotatably arranged on the third shaft body, and the intermediate hinge portion is rotatably arranged on the fourth shaft body. The third rocker arm can be rotatably extended or retracted from the accommodation groove. The maximum width of the first rocker arm in the axial direction of the first shaft body, the maximum width of the second rocker arm in the axial direction of the second shaft body, and the maximum width of the part of the third rocker arm excluding the mounting plate in the axial direction of the fourth shaft body are all smaller than the width between the left side and the right side. The left side and the right side are both flat surfaces, the left side and the right side are parallel, and both sides of the left side and the right side extend to the front and the rear.

[0007] Preferably, the mounting plate is provided with a horizontal adjustment hole and a first fixing hole.

[0008] Preferably, the housing is provided with a vertical adjustment hole and a second fixing hole.

[0009] Preferably, both the horizontal adjustment hole and the vertical adjustment hole are strip-shaped holes.

[0010] Preferably, the housing is further provided with a depth adjustment hole and a third fixing hole.

[0011] Preferably, a first cover plate is buckled on the mounting plate, and a second cover plate is buckled on the housing.

[0012] Preferably, on the front and the rear of the housing, the side close to the first rocker arm extends upward to be provided with a limiting plate that can abut against the third rocker arm.

[0013] The beneficial effects of the present utility model:

[0014] The structure of the present utility model is reasonably designed. Through the improvement and cooperation setting of the accommodation groove inside the housing and the structures of the first swing arm, the second swing arm, and the third swing arm, the third swing arm has a larger angle of extending out of the accommodation groove, and it allows the first swing arm, the second swing arm, and the third swing arm to have a thicker material design, so that the structural strength is better, the stability during use is better, and the service life is longer. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a specific embodiment of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting the housing;

[0017] Figure 3 It is a schematic structural diagram of a specific embodiment of the present utility model removing the first cover plate and the second cover plate;

[0018] Figure 4 It is a schematic diagram showing the connection structure of the first swing arm, the second swing arm and the third swing arm in a specific embodiment of the present utility model Figure 1 ;

[0019] Figure 5 It is a schematic diagram showing the connection structure of the first swing arm, the second swing arm and the third swing arm in a specific embodiment of the present utility model Figure 2 ;

[0020] Figure 6 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting the first swing arm;

[0021] Figure 7 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting the second swing arm;

[0022] Figure 8 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting the third swing arm;

[0023] Figure 9 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting the first swing arm and the second swing arm located in the accommodation groove;

[0024] Figure 10 It is a schematic structural diagram of a specific embodiment of the present utility model reflecting that a part of the third swing arm is located in the accommodation groove.

[0025] In the figure: 1. Housing; 11. Vertical adjustment hole; 12. Second fixing hole; 13. Depth adjustment hole; 14. Third fixing hole; 15. Second cover plate; 16. Limiting plate; 2. Accommodation groove; 21. Left side; 22. Right side; 23. Front side; 24. Rear side; 25. First shaft hole; 26. Second shaft hole; 3. First shaft body; 4. Second shaft body; 5. First swing arm; 51. First hinge end; 52. Second hinge end; 6. Second swing arm; 61. Third hinge end; 62. Fourth hinge end; 7. Third shaft body; 8. Fourth shaft body; 9. Third swing arm; 91. Fifth hinge end; 92. Mounting plate; 921. Horizontal adjustment hole; 922. First fixing hole; 923. First cover plate; 93. Intermediate hinge portion. Detailed Description of the Embodiment

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1-10 shown, a hinge structure includes a housing 1 with an accommodation groove 2 inside. The accommodation groove 2 includes a left side surface 21, a right side surface 22, a front surface 23, a rear surface 24, and a bottom surface. The top of the accommodation groove 2 is open. A first shaft body 3 is fixedly installed between the left side surface 21 and the right side surface 22 inside the accommodation groove 2. A second shaft body 4 is fixedly installed between the left side surface 21 and the right side surface 22 above the first shaft body 3 inside the accommodation groove 2. The first shaft body 3 is installed in a first shaft hole 25, and the second shaft body 4 is installed in a second shaft hole 26. A first rocker arm 5 is rotatably arranged on the first shaft body 3, and a second rocker arm 6 is rotatably arranged on the second shaft body 4. The first rocker arm 5 includes two ends, namely a first hinge end 51 and a second hinge end 52 hinged to the first shaft body 3; the second rocker arm 6 includes two ends, namely a third hinge end 61 and a fourth hinge end 62 hinged to the second shaft body 4; a third shaft body 7 passes through the first hinge end 51, and a fourth shaft body 8 passes through the third hinge end 61; a third rocker arm 9 is further included. The third rocker arm 9 includes two ends, namely a fifth hinge end 91 and a mounting plate 92 fixed or integrally formed with the third rocker arm 9. The third rocker arm 9 is provided with an intermediate hinge portion 93 between the fifth hinge end 91 and the mounting plate 92. The fifth hinge end 91 is rotatably arranged on the third shaft body 7, and the intermediate hinge portion 93 is rotatably arranged on the fourth shaft body 8. The third rocker arm 9 can be rotatably extended or retracted from the accommodation groove 2. The maximum width of the first rocker arm 5 in the axial direction of the first shaft body 3, the maximum width of the second rocker arm 6 in the axial direction of the second shaft body 4, and the maximum width of the part of the third rocker arm 9 excluding the mounting plate 92 in the axial direction of the fourth shaft body 8 are all smaller than the width between the left side surface 21 and the right side surface 22. Both the left side surface 21 and the right side surface 22 are flat surfaces, the left side surface 21 and the right side surface 22 are parallel, and both sides of the left side surface 21 and the right side surface 22 extend to the front surface 23 and the rear surface 24; a transverse adjustment hole 921 and a first fixing hole 922 are provided on the mounting plate 92; a vertical adjustment hole 11 and a second fixing hole 12 are provided on the housing 1; both the transverse adjustment hole 921 and the vertical adjustment hole 11 are strip-shaped holes; a depth adjustment hole 13 and a third fixing hole 14 are further provided on the housing 1; a first cover plate 923 is buckled on the mounting plate 92, and a second cover plate 15 is buckled on the housing 1; on the front surface 23 and the rear surface 24 of the housing 1, a limiting plate 16 that can abut against the third rocker arm 9 extends upward on the side close to the first rocker arm 5.

[0028] By adopting the above technical solutions, in the present utility model, during specific installation, the housing 1 is installed on the door leaf. Since there are vertical adjustment holes 11 and depth adjustment holes 13, the housing 1 can be adjusted vertically and in depth. Screws are passed through the vertical adjustment holes 11 and depth adjustment holes 13 to play a pre-positioning role. After the adjustment is completed, the housing 1 is fixedly installed by passing the screws through the second fixing holes 12 and third fixing holes 14. There is no need to groove the door jamb, and the mounting plate 92 can be directly fixed on the door jamb. Since there are horizontal adjustment holes 921 and first fixing holes 922, the horizontal installation adjustment of the mounting plate 92 can be realized, and the mounting plate 92 is fixed on the door jamb by passing the screws through the first fixing holes 922. Among them, by providing a first cover plate 923 and a second cover plate 15, a good protective effect can be achieved on the installed housing 1 and mounting plate 92, effectively preventing problems such as loosening of connections and poor aesthetics caused by rust due to the exposure of screws.

[0029] Moreover, during use, the third swing arm 9 rotates and opens and closes with the door leaf, and thus will extend or partially retract into the accommodation groove 2. The maximum width of the first swing arm 5 in the axial direction of the first shaft body 3, the maximum width of the second swing arm 6 in the axial direction of the second shaft body 4, and the maximum width of the part of the third swing arm 9 excluding the mounting plate 92 in the axial direction of the fourth shaft body 8 are all set to be less than the width between the left side surface 21 and the right side surface 22, so that the angle at which the third swing arm rotates and extends out of the accommodation groove 2 can be increased as much as possible, thus meeting the situation where the opening and closing angle of the door leaf relative to the door jamb is relatively large. And in this way, the thicknesses of the first swing arm, the second swing arm, and the third swing arm can be increased, making the structural strength higher and the stability better during use. Among them, by providing a limiting plate 16, the rotation of the second swing arm can be limited and supported.

[0030] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A hinge structure, comprising a housing (1) with an internal accommodation groove (2), the accommodation groove (2) including a left side surface (21), a right side surface (22), a front surface (23), a rear surface (24) and a bottom surface, the top of the accommodation groove (2) being open, characterized in that, A first shaft body (3) is fixedly installed between the left side surface (21) and the right side surface (22) inside the accommodating groove (2). A second shaft body (4) is fixedly installed above the first shaft body (3) between the left side surface (21) and the right side surface (22) inside the accommodating groove (2). A first rocker arm (5) is rotatably arranged on the first shaft body (3), and a second rocker arm (6) is rotatably arranged on the second shaft body (4). The first rocker arm (5) includes two ends, namely a first hinged end (51) and a second hinged end (52) hinged to the first shaft body (3); the second rocker arm (6) includes two ends, namely a third hinged end (61) and a fourth hinged end (62) hinged to the second shaft body (4); a third shaft body (7) is passed through the first hinged end (51), and a fourth shaft body (8) is passed through the third hinged end (61); a third rocker arm (9) is further included. The third rocker arm (9) includes two ends, namely a fifth hinged end (91) and a mounting plate (92) fixed or integrally formed with the third rocker arm (9). An intermediate hinged portion (93) is arranged between the fifth hinged end (91) and the mounting plate (92) of the third rocker arm (9). The fifth hinged end (91) is rotatably arranged on the third shaft body (7), and the intermediate hinged portion (93) is rotatably arranged on the fourth shaft body (8). The third rocker arm (9) can be rotatably extended or retracted from the accommodating groove (2). The maximum width of the first rocker arm (5) in the axial direction of the first shaft body (3), the maximum width of the second rocker arm (6) in the axial direction of the second shaft body (4), and the maximum width of the portion of the third rocker arm (9) excluding the mounting plate (92) in the axial direction of the fourth shaft body (8) are all smaller than the width between the left side surface (21) and the right side surface (22). Both the left side surface (21) and the right side surface (22) are flat surfaces, the left side surface (21) and the right side surface (22) are parallel, and both sides of the left side surface (21) and the right side surface (22) extend to the front surface (23) and the rear surface (24).

2. The hinge structure according to claim 1, characterized in that, A transverse adjustment hole (921) and a first fixing hole (922) are arranged on the mounting plate (92).

3. The hinge structure according to claim 2, wherein, A vertical adjustment hole (11) and a second fixing hole (12) are arranged on the housing (1).

4. A hinge structure according to claim 3, characterized in that, Both the transverse adjustment hole (921) and the vertical adjustment hole (11) are strip-shaped holes.

5. A hinge structure according to claim 1 or 2 or 3, characterized in that, A depth adjustment hole (13) and a third fixing hole (14) are further arranged on the housing (1).

6. The hinge structure according to claim 5, characterized in that A first cover plate (923) is buckled on the mounting plate (92), and a second cover plate (15) is buckled on the housing (1).

7. A hinge structure according to claim 5, characterized in that, On one side of the front surface (23) and the rear surface (24) of the housing (1) close to the first rocker arm (5), a limiting plate (16) that can abut against the third rocker arm (9) is extended upward.

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