Light and thin hinge structure

Abstract

The utility model discloses a light and thin hinge structure which comprises a first sheet body, a second sheet body and a folding mechanism, and a mounting cavity is formed in the inner side of the second sheet body; the folding mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a transmission type guide structure, one end of the first connecting rod and one end of the second connecting rod are hinged to a first hinge part and a second hinge part which are distributed front and back in the mounting cavity correspondingly, and the axis of the first hinge part and the axis of the second hinge part in the mounting cavity are located on the same horizontal plane. One end of the third connecting rod is hinged to the other end of the first connecting rod, the other end of the third connecting rod is hinged to the first sheet body, the other end of the second connecting rod is hinged to the third connecting rod, and the other end of the second connecting rod is in transmission connection with the inner side of the first sheet body through a transmission type guide structure; the hinge structure is simplified, the appearance size and the weight are reduced, and the manufacturing cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, in particular to a light and thin hinge structure. Background Art

[0002] Hinges are mainly used to connect door panels and door frames, and allow the door panels to move so that the door can be opened or closed. For example, the adjustable door hinge with an improved adjustment structure disclosed in Chinese patent publication number CN103938967A has defects such as complex structure, large external dimensions, and being too bulky and having high manufacturing costs. At the same time, deep grooves need to be opened on the door frame side and the door panel side during installation, which makes installation more complicated for workers. Therefore, the above structure can no longer meet people's growing needs and is in urgent need of improvement. Utility Model Content

[0003] The purpose of the utility model is to provide a light and thin hinge structure designed to solve the deficiencies of the above-mentioned technology.

[0004] The utility model is designed to provide a light and thin hinge structure, comprising:

[0005] The first piece, and

[0006] a second sheet, wherein a mounting cavity is provided on an inner side of the second sheet;

[0007] The folding mechanism includes a first connecting rod, a second connecting rod, a third connecting rod and a transmission guide structure, one end of the first connecting rod and one end of the second connecting rod are respectively hinged to the first hinge part and the second hinge part distributed front and back in the installation cavity, one end of the third connecting rod is hinged to the other end of the first connecting rod, the other end of the third connecting rod is hinged to the first sheet body, the other end of the second connecting rod is hinged to the third connecting rod, and the other end of the second connecting rod is connected to the inner side of the first sheet body through the transmission guide structure.

[0008] Among them, the axes of the first hinge part and the second hinge part in the installation cavity are located on the same horizontal plane, and the first sheet and the second sheet are in an expanded state or a closed state through a folding mechanism between the first sheet and the second sheet; in the expanded state, one end of the first connecting rod and the second connecting rod are placed in the installation cavity, and the axes of the hinges at both ends of the first connecting rod and the axes of the hinges at both ends of the second connecting rod serve as the four endpoints of the quadrilateral respectively; in the closed state, the first connecting rod, the second connecting rod, the third connecting rod and the transmission guide structure are all lying in the installation cavity, so that the axes of the hinges at both ends of the first connecting rod, the axes of the hinges at both ends of the second connecting rod, the axes of the hinges of the first sheet and the axes of the hinges of the second sheet are all located on the same horizontal plane.

[0009] According to the above-described thin and light hinge structure, the transmission guide structure includes a first gear, an odd number of second gears and a third gear, the first gear is fixedly arranged on the inner side of the first sheet and is hinged to the other end of the third connecting rod, the second gear is hinged to the middle part of the third connecting rod, the third gear is fixedly arranged on the other end of the second connecting rod, and the other end of the second connecting rod is hinged to the third connecting rod through the third gear; the first gear and the third gear are respectively engaged with the second gear.

[0010] According to the above-described thin and light hinge structure, the first gear, the second gear and the third gear are arranged along the length direction of the third connecting rod, and are arranged in an inclined "I" shape or a horizontal "I" shape in sequence, or the axis of the first gear and the axis of the second gear are staggered with each other, and the axis of the second gear and the axis of the third gear are located on the same horizontal plane, or the axis of the first gear and the axis of the second gear are located on the same horizontal plane, and the axis of the second gear and the axis of the third gear are staggered, or the axis of the first gear and the axis of the third gear are respectively staggered with the axis of the second gear, and the axis of the first gear and the axis of the third gear are located on the same horizontal plane.

[0011] According to the above-described thin and light hinge structure, the first connecting rod includes a first straight segment and a second straight segment arranged at one end of the first straight segment, the angle between the first straight segment and the second straight segment is an obtuse angle, the end of the first straight segment is hinged to the first hinge part in the installation cavity, and the end of the second straight segment is hinged to the third connecting rod through a third gear.

[0012] According to the above-mentioned thin and light hinge structure, the length of the first straight line segment is greater than the length of the second straight line segment.

[0013] According to the above-mentioned light and thin hinge structure, the first connecting rod is provided with a first avoidance notch facing one side of the second connecting rod and along the length direction thereof.

[0014] According to the above-described thin and light hinge structure, the second connecting rod includes a first straight portion and a second straight portion arranged at one end of the first straight portion, the angle between the first straight portion and the second straight portion is an obtuse angle, the end of the first straight portion is hinged to the second hinge portion of the mounting cavity, and the end of the second straight portion is connected to the third connecting rod through the third gear.

[0015] According to the above-mentioned thin and light hinge structure, the first hinge part in the installation cavity is provided with at least one and is provided behind the second hinge part, the second hinge part is provided with at least one and is provided at the opening of the installation cavity (210), and the first straight segment end of the first connecting rod is hinged to the first hinge part.

[0016] According to the above-described thin and light hinge structure, the number of the first gear, the second gear, the third gear and the third connecting rod are all set to at least two, and are all spaced apart along the length direction of the hinge structure, so that at least two first gears, at least two second gears and at least two third gears are respectively coaxially arranged, at least two third connecting rods are arranged oppositely and in parallel, and one end thereof is hinged to the two inner walls of the mouth of the first avoidance notch of the first connecting rod, and the first gear, the second gear and the third gear are hinged on the inner side of each third connecting rod.

[0017] According to the above-described thin and light hinge structure, at least two of the second gears are connected by a connecting shaft, and a second avoidance notch for avoiding the connecting shaft is provided on the second connecting rod; the other ends of at least two third connecting rods are respectively hinged with a hinge plate, and each hinge plate is fixed to the inner side of the first sheet, and the hinge plate and the first gear are both close to one side edge of the second sheet in the length direction.

[0018] The light and thin hinge structure designed in this utility model has the following beneficial effects:

[0019] 1. The hinge structure of the present invention is simplified, and the overall size and weight are reduced, further reducing the manufacturing cost.

[0020] 2. The first sheet is a thin sheet, and the second sheet forms a convex bulge on its back due to the installation cavity. Therefore, during installation, it is only necessary to make a shallow groove in the installation part of the second sheet, thereby simplifying the installation method.

[0021] 3. A gear transmission assembly is set in the folding mechanism, which makes the hinge more stable and delicate when opening or closing, thereby improving the performance and opening and closing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a schematic diagram of the hinge structure in an expanded state (I);

[0023] Figure 2 1 is a schematic diagram of the hinge structure in the expanded state (II);

[0024] Figure 3 1 is a schematic diagram of the hinge structure in the expanded state (III);

[0025] Figure 41 is a schematic diagram of the hinge structure in an expanded state (IV);

[0026] Figure 5 1 is a schematic diagram of the hinge structure in an expanded state (V);

[0027] Figure 6 1 is a schematic diagram of the hinge structure in an expanded state (six);

[0028] Figure 7 7 is a schematic diagram of the hinge structure in an expanded state;

[0029] Figure 8 1 is a schematic diagram of the hinge structure in an expanded state (eight);

[0030] Figure 9 It is a schematic diagram of the closed state structure of the hinge structure;

[0031] Figure 10 It is a structural diagram of the combination of the second sheet and the folding mechanism;

[0032] Figure 11 is a structural diagram of the first connecting rod;

[0033] Figure 12 1 is a schematic diagram of the structure of the second connecting rod (I);

[0034] Figure 13 1 is a schematic structural diagram of the second connecting rod (II);

[0035] Figure 14 This is a schematic diagram of the structure of the three gear arrangements (I);

[0036] Figure 15 This is a schematic diagram of the structure of the three gear arrangements (II);

[0037] Figure 16 It is a structural diagram of the arrangement of three gears (3);

[0038] Figure 17 It is a structural diagram of the three gear arrangements (four);

[0039] Figure 18 It is a structural diagram of the arrangement of three gears (V).

[0040] In the figure: 1, first sheet; 10, folding mechanism;

[0041] 2. Second piece; 21. Mounting portion; 210. Mounting cavity; 211. First hinge portion; 212. Second hinge portion; 22. Connecting ear;

[0042] 3. First connecting rod; 30. First avoidance gap; 31. First straight segment; 32. Second straight segment;

[0043] 4. Second connecting rod; 40. Second avoidance gap; 41. First straight portion; 42. Second straight portion;

[0044] 5. Third connecting rod;

[0045] 6. Transmission guide structure; 61. First gear; 62. Second gear; 63. Third gear; 64. Connecting shaft; 65. Hinge plate; DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0047] Example:

[0048] like Figures 1-13 As shown, the embodiment describes a thin and light hinge structure, including a first sheet 1, a second sheet 2 and a folding mechanism 10, and the two ends of the folding mechanism 10 are rotatably connected to the first sheet 1 and the second sheet 2 respectively, so that the first sheet 1 and the second sheet 2 can be expanded and closed under the action of the folding mechanism 10.

[0049] A mounting cavity 210 is provided on the inner side of the second sheet 2; wherein, the second sheet 2 is composed of a mounting portion 21 and two connecting ears 22, the mounting cavity 210 is provided on the inner side of the mounting portion 21, and the two connecting ears 22 are provided at opposite ends of the mounting portion 21, and the inner side of each connecting ear 22 is flush with the inner side of the mounting portion 21, so that the connecting ear 22 and the mounting portion 21 are combined with each other to form a second sheet 2 of an integrated structure, or the connecting ear 22 is installed in the end mounting groove of the mounting portion 21 by bolt connection or welding.

[0050] The folding mechanism 10 includes a first connecting rod 3, a second connecting rod 4, a third connecting rod 5 and a transmission guide structure 6. The third connecting rod 5 generally adopts a straight connecting rod, but is not limited to this. One end of the first connecting rod 3 and one end of the second connecting rod 4 are respectively hinged to the first hinge part 211 and the second hinge part 212 distributed front and back in the installation cavity 210, and the axis of the first hinge part 211 and the second hinge part 212 in the installation cavity 210 are located on the same horizontal plane. One end of the third connecting rod 5 is hinged to the other end of the first connecting rod 3, and the other end of the third connecting rod 5 is hinged to the first connecting rod 3. One piece 1 is hinged; the transmission guide structure 6 includes a first gear 61, an odd number of second gears 62, and a third gear 63. The first gear 61 is fixedly arranged on the inner side of the first piece 1 and is hinged to the other end of the third connecting rod 5. The second gear 62 is hinged to the middle of the third connecting rod 5. The third gear 63 is fixedly arranged on the other end of the second connecting rod 4. The other end of the second connecting rod 4 is hinged to the third connecting rod 5 through the third gear 63. The first gear 61 and the third gear 63 are respectively meshed with the second gear 62. The arrangement of the above-mentioned gear transmission assembly can guide the movement of the first piece 1 and the second piece 2 when they are relatively opened or closed, so that the first piece 1 or the second piece 2 moves in a circular motion, achieving the effect of a hinge. At the same time, the number of second gears 62 can be set to one, three, five or seven, etc., but this number is not limited to this. When the number of second gears 62 is three, five or seven, they are arranged along the length direction of the third connecting rod 5.

[0051] The first sheet 1 and the second sheet 2 are placed in an expanded or closed state via a folding mechanism 10. When the first sheet 1 or the second sheet 2 is expanded or closed, the folding mechanism 10 is also expanded or closed, and the transmission guide structure 6 causes the first sheet 1 or the second sheet 2 to perform a circular motion.

[0052] When in the unfolded state, the angle between the first sheet 1 and the second sheet 2 is greater than 0° and less than or equal to 180°; when the unfolded state is 180°, the inner side of the first sheet 1 is flush with the inner side of the second sheet 2, and the third link 5 is in a horizontal state, or when the unfolded state is 90°, the third link 5 is in a horizontal state, the inner side of the first sheet 1 and the third link 5 are perpendicular to each other, and the first link 3 and the second link 4 are in an upright state; one end of the first link 3 and the second link 4 is placed in the mounting cavity 210, and the axis of the hinge at both ends of the first link 3 and the axis of the hinge at both ends of the second link 4 serve as the four endpoints of a parallelogram respectively; wherein, during the unfolding process, the first link 3, the second link 4 and the third link 5 also unfold, and at the same time, the first gear 61 and the second gear 62 respectively mesh with the second gear 62 for transmission guidance to limit the first sheet 1 or the second sheet 2 from performing circular motion and unfolding.

[0053] In the closed state, the angle between the first sheet 1 and the second sheet 2 is equal to 0°, and the inner sides of the two are in contact with each other, and the first connecting rod 3, the second connecting rod 4, the third connecting rod 5 and the transmission guide structure 6 are all lying in the installation cavity 210, so that the axis centers of the hinges at both ends of the first connecting rod 3 and the axis centers of the hinges at both ends of the second connecting rod 4 are located on the same horizontal plane; wherein, during the closing process, the first connecting rod 3, the second connecting rod 4 and the third connecting rod 5 also follow and close, and at the same time, the first gear 61 and the second gear 62 respectively engage with the second gear 62 for transmission guidance to limit the first sheet 1 or the second sheet 2 from making circular motion and closing.

[0054] Preferably, the first gear 61, the second gear 62 and the third gear 63 are arranged along the length direction of the third connecting rod 5, and are arranged in an inclined "I" shape or a horizontal "I" shape in sequence, or the first gear 61, the second gear 62 and the third gear 63 can also be arranged in other ways, such as the axis of the first gear 61 and the axis of the second gear 62 are staggered with each other, the axis of the second gear 62 and the axis of the third gear 63 are on the same horizontal plane, or the axis of the first gear 61 and the axis of the second gear 62 are at On the same horizontal plane, the axis of the second gear 62 and the axis of the third gear 63 are offset, or the axis of the first gear 61 and the axis of the third gear 63 are respectively offset from the axis of the second gear 62, and the axis of the first gear 61 and the axis of the third gear 63 are located on the same horizontal plane. However, when other methods or inclined "I"-shaped arrangements are adopted, the depth of the mounting groove needs to be deepened so that the first connecting rod 3, the second connecting rod 4, the third connecting rod 5 and the transmission guide structure 6 can be accommodated in the closed state. Please refer to Figures 14-18 shown.

[0055] Preferably, the first connecting rod 3 includes a first straight segment 31 and a second straight segment 32 arranged at one end of the first straight segment 31. The angle between the first straight segment 31 and the second straight segment 32 is an obtuse angle, but is not limited to this. The angle between the first straight segment 31 and the second straight segment 32 can also be 180°, so that the first connecting rod is a straight connecting rod; the end of the first straight segment 31 is hinged to the first hinge part 211 in the installation cavity 210, and the end of the second straight segment 32 is hinged to the third connecting rod 5 through the third gear 63; the length of the first straight segment 31 is greater than the length of the second straight segment 32; its structural setting can make the hinge structure more reasonable and reliable, and improve the performance.

[0056] In this embodiment, the first connecting rod 3 is provided with a first avoidance notch 30 facing the side of the second connecting rod 4 and along its length direction; wherein, the first avoidance notch 30 allows the second connecting rod 4 to be close to a horizontal state when fully extended, or allows the second connecting rod 4 to lie in the mounting cavity 210 when fully closed, thereby being provided for accommodating the second connecting rod 4, so as to further reduce the external dimensions after the hinge is closed.

[0057] In this embodiment, the second connecting rod 4 includes a first straight portion 41 and a second straight portion 42 disposed at one end of the first straight portion 41. The angle between the first straight portion 41 and the second straight portion 42 is an obtuse angle, but is not limited thereto. The angle between the first straight portion 41 and the second straight portion 42 can also be 180°, making the second connecting rod a straight connecting rod. The end of the first straight portion 41 is hinged to the second hinge portion 212 of the mounting cavity 210, and the end of the second straight portion 42 is connected to the third connecting rod 5 via the third gear 63. This structural arrangement makes the hinge structure more reasonable and reliable, improving performance.

[0058] In this embodiment, there are two first hinged parts 211 in the installation cavity 210 and they are arranged behind the second hinged part 212, and the second hinged part 212 is set as one and is set at the opening of the installation cavity 210. The opposite sides of the end of the first straight section 31 of the first connecting rod 3 are respectively hinged to the two first hinged parts 211; in addition, the number of the first gear 61, the second gear 62, the third gear 63 and the third connecting rod 5 are all set to at least two, and they are all spaced apart along the length direction of the hinge structure, so that at least two first gears 61, at least two second gears 62, and at least two third gears 63 are respectively coaxially arranged, and at least two third connecting rods 5 are arranged oppositely and in parallel, and one end thereof is respectively hinged to the two inner walls of the mouth of the first avoidance notch 30 of the first connecting rod 3, and the inner side of each third connecting rod 5 is hinged to the first gear 61, the second gear 62 and the third gear 63. Among them, the number of the first gear 61, the second gear 62, the third gear 63 and the third connecting rod 5 is preferably two, but more can be set. At the same time, the setting of this structure can make the structure more compact to improve the strength of the hinge structure, and the hinge is more stable and reliable when working, thereby improving the performance.

[0059] Furthermore, at least two of the second gears 62 are connected by a connecting shaft 64, and a second avoidance gap 40 for avoiding the connecting shaft 64 is provided on the side of the second connecting rod 4 away from the first connecting rod 3; the connecting shaft 64 plays a supporting role between the two second gears 62, thereby improving the structural stability, and the second avoidance gap 40 provides avoidance space for the connecting shaft 64 when the hinge structure is fully closed, thereby contributing to the thinning of the hinge appearance.

[0060] The other ends of at least two third connecting rods 5 are respectively hinged with a hinge plate 65, and each hinge plate 65 is fixed to the inner side of the second piece 2. The hinge plate 65 and the first gear 61 are both close to the edge of one side in the length direction of the first piece 1; the setting of the hinge plate 65 makes the rotation of the third connecting rod 5 more stable, thereby improving the performance of the structure.

[0061] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A thin and light hinge structure, characterized in that: include: a first sheet (1), and A second sheet (2), wherein a mounting cavity (210) is provided on the inner side of the second sheet (2); A folding mechanism (10), the folding mechanism (10) includes a first connecting rod (3), a second connecting rod (4), a third connecting rod (5) and a transmission guide structure (6), one end of the first connecting rod (3) and one end of the second connecting rod (4) are respectively hinged to a first hinge portion (211) and a second hinge portion (212) distributed front to back in the installation cavity (210), one end of the third connecting rod (5) is hinged to the other end of the first connecting rod (3), the other end of the third connecting rod (5) is hinged to the first sheet (1), the other end of the second connecting rod (4) is hinged to the third connecting rod (5), and the other end of the second connecting rod (4) is transmission-connected to the inner side of the first sheet (1) through the transmission guide structure (6).

2. A light and thin hinge structure according to claim 1, characterized in that: The transmission guide structure (6) comprises a first gear (61), an odd number of second gears (62) and a third gear (63); the first gear (61) is fixedly arranged on the inner side of the first plate (1) and is hinged to the other end of the third connecting rod (5); the second gear (62) is hinged to the middle part of the third connecting rod (5); the third gear (63) is fixedly arranged on the other end of the second connecting rod (4); the other end of the second connecting rod (4) is hinged to the third connecting rod (5) through the third gear (63); the first gear (61) and the third gear (63) are respectively engaged with the second gear (62).

3. A light and thin hinge structure according to claim 2, characterized in that: The first gear (61), the second gear (62) and the third gear (63) are arranged along the length direction of the third connecting rod (5) and are arranged in an inclined "I" shape or a horizontal "I" shape, or The axis of the first gear (61) and the axis of the second gear (62) are staggered with each other, and the axis of the second gear (62) and the axis of the third gear (63) are located on the same horizontal plane, or The axis of the first gear (61) and the axis of the second gear (62) are located on the same horizontal plane, and the axis of the second gear (62) and the axis of the third gear (63) are misaligned, or The axis centers of the first gear (61) and the third gear (63) are respectively offset from the axis center of the second gear (62), and the axis centers of the first gear (61) and the third gear (63) are located on the same horizontal plane.

4. A light and thin hinge structure according to claim 2, characterized in that: The first connecting rod (3) includes a first straight segment (31) and a second straight segment (32) arranged at one end of the first straight segment (31), the angle between the first straight segment (31) and the second straight segment (32) is an obtuse angle, the end of the first straight segment (31) is hinged to the first hinge portion (211) in the installation cavity (210), and the end of the second straight segment (32) is hinged to the third connecting rod (5) through a third gear (63).

5. A light and thin hinge structure according to claim 4, characterized in that: The length of the first straight line segment (31) is greater than the length of the second straight line segment (32).

6. The thin and light hinge structure according to claim 2, characterized in that: The first connecting rod (3) is provided with a first avoidance notch (30) facing one side of the second connecting rod (4) and along the length direction thereof.

7. The thin and light hinge structure according to claim 2, characterized in that: The second connecting rod (4) includes a first straight portion (41) and a second straight portion (42) arranged at one end of the first straight portion (41), the angle between the first straight portion (41) and the second straight portion (42) is an obtuse angle, the end of the first straight portion (41) is hinged to the second hinge portion (212) of the mounting cavity (210), and the end of the second straight portion (42) is connected to the third connecting rod (5) through the third gear (63).

8. A light and thin hinge structure according to any one of claims 2 to 7, characterized in that: The first hinge portion (211) in the installation cavity (210) is provided as at least one and is provided behind the second hinge portion (212); the second hinge portion (212) is provided as at least one and is provided at the opening of the installation cavity (210); and the end of the first straight section (31) of the first connecting rod (3) is hinged to the first hinge portion (211).

9. The thin and light hinge structure according to claim 8, characterized in that: The number of the first gear (61), the second gear (62), the third gear (63) and the third connecting rod (5) is set to at least two, and they are spaced apart along the length direction of the hinge structure, so that at least two first gears (61), at least two second gears (62) and at least two third gears (63) are respectively coaxially arranged, at least two third connecting rods (5) are arranged oppositely and in parallel, and one end thereof is hinged to the two inner walls of the mouth of the first avoidance notch (30) of the first connecting rod (3), and the first gear (61), the second gear (62) and the third gear (63) are hingedly arranged on the inner side of each third connecting rod (5).

10. The thin and light hinge structure according to claim 9, characterized in that: At least two of the second gears (62) are connected via a connecting shaft (64), and a second avoidance notch (40) for avoiding the connecting shaft (64) is provided on the second connecting rod (4); The other ends of at least two third connecting rods (5) are respectively hinged with hinge plates (65), and each hinge plate (65) is fixedly arranged on the inner side of the first plate (1). The hinge plates (65) and the first gear (61) are both close to one side edge of the second plate (2) in the longitudinal direction.

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