Hinge and door

Abstract

The hinge comprises a first hinge body assembly, a second hinge body assembly, an adjusting bolt and a locking piece, the first hinge body assembly is used for being connected with a door frame, the second hinge body assembly comprises a connecting base and two connecting lugs, the connecting lugs are used for being connected with a door body, the adjusting bolt is used for adjusting the adjusting bolt, and the locking piece is used for locking the adjusting bolt. The connecting base is hinged to the first hinge body assembly, one of the two connecting lugs is arranged on one axial side of a hinge shaft of the connecting base, the other connecting lug is arranged on the other axial side of the hinge shaft of the connecting base, the adjusting bolt is arranged between the connecting base and the corresponding connecting lug, and the adjusting bolt is used for enabling the connecting base to move in the axial direction of the adjusting bolt. The locking pieces are arranged between the connecting seats and the corresponding connecting lugs, and the locking pieces are used for locking the connecting seats and the corresponding connecting lugs, so that by arranging the locking pieces, the locking pieces can assist the adjusting bolts in bearing the gravity of the door body, the situation that the adjusting bolts are stressed excessively is avoided, and the service life of the hinge is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a hinge and door. Background Technology

[0002] Existing doors are generally connected to the door frame by hinges. Due to the possibility of installation errors in the hinges, the gap between the door and the door frame can become too large, affecting the normal use of the door. To adjust the gap between the door and the door frame, adjusting bolts are usually installed on the hinges. Users can change the installation angle of the door by turning the adjusting bolts, thereby adjusting the gap between the door and the door frame.

[0003] Because the existing hinges require the adjusting bolts to bear the weight of the door during installation, the adjusting bolts are subjected to excessive stress, making them prone to breakage and affecting the service life of the hinges. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a hinge that can improve the service life of the hinge.

[0005] This utility model also proposes a door having the above-mentioned hinge.

[0006] The hinge according to a first aspect embodiment of the present invention includes:

[0007] The first page body component is used for connection with the door frame;

[0008] The second page assembly includes a connecting seat and two connecting ears. The connecting ears are used to connect with the door body. The connecting seat is hinged to the first page assembly. One of the two connecting ears is located on one side of the axial direction of the hinge axis of the connecting seat, and the other is located on the other side of the axial direction of the hinge axis of the connecting seat.

[0009] An adjusting bolt is provided between the connecting seat and the corresponding connecting lug, and the adjusting bolt is used to move the connecting seat along the axial direction of the adjusting bolt;

[0010] A locking element is disposed between the connector and the corresponding connector ear, and the locking element is used to lock the connector and the corresponding connector ear.

[0011] The hinge according to the first aspect of the present invention has at least the following beneficial effects:

[0012] The first hinge assembly connects to the door frame, and the connecting lugs connect to the door body to allow the door to rotate. When it is necessary to adjust the relative position between the door frame and the door body, the connecting lugs and connecting seats can be unlocked by the locking mechanism. Then, the user can turn the adjusting bolt to move the connecting seat along the axial direction of the adjusting bolt, thereby adjusting the gap between the door frame and the door body to meet the preset requirements. After the door body is adjusted, the connecting lugs and connecting seats are locked by the locking mechanism. The locking mechanism can help the adjusting bolt bear the weight of the door body to avoid excessive stress on the adjusting bolt, thereby improving the service life of the hinge.

[0013] According to some embodiments of the present invention, the connecting ear includes a connecting plate and a connecting block disposed on the connecting plate. The connecting plate and the connecting block form a receiving groove. Along the axial direction of the hinge axis of the connecting seat, connecting protrusions are respectively provided on opposite sides of the connecting seat. The connecting protrusions are disposed in the corresponding receiving grooves. The adjusting bolts are sequentially inserted through the connecting plate, the connecting protrusions, and the connecting block, and the adjusting bolts are threadedly engaged with the connecting protrusions.

[0014] According to some embodiments of the present invention, the locking member includes a head and a first rod portion. The head is disposed at one end of the first rod portion, the first rod portion is threadedly engaged with the connecting protrusion, and the end of the first rod portion away from the head is threadedly engaged with the connecting block. The head abuts against the connecting plate.

[0015] According to some embodiments of the present invention, the adjusting bolt includes a first abutting part, a second abutting part, and a second rod part. The first abutting part is disposed at one end of the second rod part, the second abutting part is disposed at the other end of the second rod part, the second rod part is provided with external threads, the second rod part is threadedly engaged with the connecting seat, the first abutting part abuts against the connecting plate, and the second abutting part abuts against the connecting block.

[0016] According to some embodiments of this utility model, the connecting plate and the connecting block are an integral structure.

[0017] According to some embodiments of the present invention, a limiting structure is provided between the connecting ear and the connecting seat, and the limiting structure is used to restrict the swinging of the connecting ear relative to the connecting seat.

[0018] According to some embodiments of the present invention, the limiting structure includes a limiting groove and a limiting protrusion. One of the limiting protrusion and the limiting groove is disposed in the connecting ear, and the other is disposed in the connecting seat. The limiting protrusion is accommodated in the limiting groove and abuts against the side wall of the limiting groove.

[0019] According to some embodiments of the present invention, the hinge further includes a connecting component, and the connecting seat is hinged to the first page body component through the connecting component.

[0020] According to some embodiments of the present invention, the first page assembly is provided with a first mounting groove, and the opposite sidewalls of the first mounting groove are respectively provided with first sliding grooves. The connecting seat is provided with a second mounting groove, and the opposite sidewalls of the second mounting groove are respectively provided with second sliding grooves. The connecting assembly includes a first connector and a second connector. The middle position of the first connector is hinged to the middle position of the second connector. One end of the first connector is hinged to the first page assembly. The two sides of the other end of the first connector are respectively inserted into the corresponding second sliding grooves. One end of the second connector is hinged to the connecting seat. The two sides of the other end of the second connector are respectively inserted into the corresponding first sliding grooves. When the hinge switches from the unfolded state to the closed state, the distance between the one end of the second connector and the one end of the first connector gradually increases.

[0021] The door according to a second aspect of the present invention includes the hinge described in the above embodiments.

[0022] The door according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0023] The first hinge assembly connects to the door frame, and the connecting lugs connect to the door body to allow the door to rotate. When it is necessary to adjust the relative position between the door frame and the door body, the connecting lugs and connecting seats can be unlocked by the locking mechanism. Then, the user can turn the adjusting bolt to move the connecting seat along the axial direction of the adjusting bolt, thereby adjusting the gap between the door frame and the door body to meet the preset requirements. After the door body is adjusted, the connecting lugs and connecting seats are locked by the locking mechanism. The locking mechanism can help the adjusting bolt bear the weight of the door body to avoid excessive stress on the adjusting bolt, thereby improving the service life of the hinge.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the hinge structure according to an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of the hinge according to an embodiment of the present utility model;

[0028] Figure 3 This is a top view of the hinge according to an embodiment of the present utility model;

[0029] Figure 4 for Figure 3 Sectional view of line AA in the middle;

[0030] Figure 5 for Figure 4 A magnified view of part D in the middle;

[0031] Figure 6 for Figure 3 Sectional view of the middle BB line;

[0032] Figure 7 for Figure 3 A cross-sectional view of the CC line;

[0033] Figure 8 This is a schematic diagram of the structure of the connector according to an embodiment of the present utility model;

[0034] Figure 9 This is a schematic diagram of the connecting ear in an embodiment of the present invention.

[0035] Figure label:

[0036] First page assembly 100, first mounting groove 110, first sliding groove 120, second page assembly 200, connecting seat 210, connecting protrusion 211, limiting protrusion 212, second mounting groove 213, second sliding groove 214, connecting ear 220, connecting plate 221, connecting block 222, limiting groove 223, receiving groove 224, adjusting bolt 300, first abutting part 310, second abutting part 320, second rod part 330, locking member 400, head 410, first rod part 420, connecting assembly 500, first connecting member 510, second connecting member 520. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] 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.

[0039] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0040] 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.

[0041] In existing technologies, doors are typically connected to the door frame via hinges. However, due to inherent installation errors in the hinges, excessive gaps can occur between the door and the frame, affecting the door's usability. To adjust these gaps, adjusting bolts are usually installed on the hinges. Users can change the door's installation angle by turning these bolts, thus adjusting the gap. However, during installation, the adjusting bolts bear the weight of the door, leading to excessive stress and potential breakage, thus shortening the hinge's lifespan.

[0042] Reference Figures 1 to 4 According to a first aspect of the present invention, the hinge includes a first page assembly 100, a second page assembly 200, an adjusting bolt 300, and a locking member 400. The first page assembly 100 is used to connect to a door frame. The second page assembly 200 includes a connecting seat 210 and two connecting ears 220, which are used to connect to the door body. The connecting seat 210 is hinged to the first page assembly 100. One of the two connecting ears 220 is located on one side of the axial direction of the hinge axis of the connecting seat 210, and the other is located on the other side of the axial direction of the hinge axis of the connecting seat 210. On the other side, the adjusting bolt 300 is located between the connecting seat 210 and the corresponding connecting ear 220. The adjusting bolt 300 is used to move the connecting seat 210 along the axial direction of the adjusting bolt 300. The locking member 400 is located between the connecting seat 210 and the corresponding connecting ear 220. The locking member 400 is used to lock the connecting seat 210 and the corresponding connecting ear 220. In this way, by setting the locking member 400, the locking member 400 can assist the adjusting bolt 300 in bearing the weight of the door, so as to avoid the adjusting bolt 300 being subjected to excessive force, thereby improving the service life of the hinge.

[0043] For example, the first hinge assembly 100 is connected to the door frame, and the connecting ear 220 is connected to the door body so that the door body can rotate. When it is necessary to adjust the relative position between the door frame and the door body, the connecting ear 220 and the connecting seat 210 can be unlocked by the locking member 400. Then, the user can turn the adjusting bolt 300 to make the connecting seat 210 move along the axial direction of the adjusting bolt 300, thereby adjusting the gap between the door frame and the door body to meet the preset requirements. After the door body is adjusted, the connecting ear 220 and the connecting seat 210 are locked by the locking member 400. The locking member 400 can assist the adjusting bolt 300 in bearing the weight of the door body to avoid excessive force on the adjusting bolt 300, thereby improving the service life of the hinge.

[0044] Reference Figure 4 , Figure 5 and Figure 9 In some embodiments of this utility model, the connecting ear 220 includes a connecting plate 221 and a connecting block 222 disposed on the connecting plate 221. The connecting plate 221 and the connecting block 222 enclose a receiving groove 224. Along the axial direction of the hinge axis of the connecting seat 210, connecting protrusions 211 are respectively provided on opposite sides of the connecting seat 210. The connecting protrusions 211 are disposed in the corresponding receiving grooves 224. The adjusting bolt 300 is sequentially inserted through the connecting plate 221, the connecting protrusion 211 and the connecting block 222. The adjusting bolt 300 is threadedly engaged with the connecting protrusion 211, which can hide the connection position between the connecting protrusion 211 and the adjusting bolt 300, so as to avoid the connection position between the adjusting bolt 300 and the connecting protrusion 211 being exposed to the outside, thereby improving the service life of the hinge.

[0045] Reference Figure 4 In some embodiments of this utility model, the locking member 400 includes a head 410 and a first rod portion 420. The head 410 is disposed at one end of the first rod portion 420. The first rod portion 420 is threadedly engaged with the connecting protrusion 211, and the end of the first rod portion 420 away from the head 410 is threadedly engaged with the connecting block 222. The head 410 abuts against the connecting plate 221, which facilitates unlocking or locking the connecting ear 220.

[0046] For example, the locking member 400 is a bolt. When the locking member 400 unlocks the connecting ear 220 and the connecting protrusion 211, the head 410 separates from the connecting plate 221, and the end of the first rod 420 away from the head 410 is not threadedly connected to the connecting block 222, so that the adjusting bolt 300 can drive the connecting protrusion 211 to move in the receiving groove 224. When the locking member 400 locks the connecting ear 220 and the connecting protrusion 211, the head 410 abuts against the connecting plate 221, and the end of the first rod 420 away from the head 410 is threadedly connected to the connecting block 222, so that the adjusting bolt 300 cannot drive the connecting protrusion 211 to move in the receiving groove 224, which makes it easy to unlock or lock the connecting ear 220.

[0047] Reference Figure 4 In some embodiments of this utility model, the adjusting bolt 300 includes a first abutting part 310, a second abutting part 320, and a second rod part 330. The first abutting part 310 is disposed at one end of the second rod part 330, and the second abutting part 320 is disposed at the other end of the second rod part 330. The second rod part 330 is provided with external threads and is threadedly engaged with the connecting seat 210. The first abutting part 310 abuts against the connecting plate 221, and the second abutting part 320 abuts against the connecting block 222, which facilitates the assembly of the adjusting bolt 300.

[0048] For example, the first abutment 310 is the nut of the adjusting bolt 300, and the end of the second rod 330 away from the first abutment 310 is riveted to form the second abutment 320 by a riveting device. The connecting ear 220 is clamped between the first abutment 310 and the second abutment 320, so that the adjusting bolt 300 cannot move relative to the connecting ear 220. The operation is simple, convenient and quick, and it is easy to assemble the adjusting bolt 300.

[0049] As another implementation, a retaining ring can also be provided at the end of the second rod portion 330 away from the first abutment portion 310. The retaining ring abuts against the connecting block 222 and can also restrict the adjustment bolt 300 from moving along its axial direction. This is not a limitation here.

[0050] In some embodiments of this utility model, the first abutting part 310, the second abutting part 320, and the second rod part 330 are an integral structure, which can improve the structural strength of the adjusting bolt 300 and thus improve the service life of the adjusting bolt 300.

[0051] In some embodiments of this utility model, the connecting plate 221 and the connecting block 222 are an integral structure, which can reduce the number of molds, thereby reducing the production and manufacturing cost of the molds and thus reducing the production and manufacturing cost of the hinge.

[0052] For example, the connecting plate 221 and the connecting block 222 can be integrally formed by die casting, which can reduce the number of molds, thereby reducing the production and manufacturing cost of the molds and thus reducing the production and manufacturing cost of the hinge.

[0053] As another implementation, the connecting plate 221 and the connecting block 222 can also be connected and fixed by welding. The welding method includes, but is not limited to, resistance welding, laser welding or ultrasonic welding, which will not be described in detail here.

[0054] Reference Figure 4 , Figure 5 , Figure 8 and Figure 9In some embodiments of this utility model, a limiting structure is provided between the connecting ear 220 and the connecting seat 210. The limiting structure is used to restrict the swing of the connecting ear 220 relative to the connecting seat 210, which can improve the connection strength between the connecting ear 220 and the connecting seat 210, thereby improving the service life of the hinge.

[0055] In some embodiments of this utility model, the limiting structure includes a limiting groove 223 provided in the connecting ear 220 and a limiting protrusion 212 provided in the connecting seat 210. The limiting protrusion 212 is accommodated in the limiting groove 223 and abuts against the side wall of the limiting groove 223, which can improve the connection strength between the connecting ear 220 and the connecting seat 210, thereby improving the service life of the hinge.

[0056] For example, a limiting groove 223 is provided on the connecting block 222. Along the axial direction of the hinge axis of the connecting shaft, limiting protrusions 212 are provided on opposite sides of the connecting seat 210. The limiting protrusions 212 are accommodated in the corresponding limiting groove 223 and abut against the side wall of the corresponding limiting groove 223. This can limit the swing of the connecting ear 220 relative to the connecting seat 210, improve the connection strength between the connecting ear 220 and the connecting seat 210, and thus improve the service life of the hinge.

[0057] It should be noted that the positions of the limiting groove 223 and the limiting protrusion 212 can be interchanged, that is, the limiting groove 223 is located on the connecting seat 210, while the limiting protrusion 212 is located on the connecting ear 220, which is not restricted here.

[0058] As another implementation method, the limiting structure can also be a structure in which a waist-shaped hole and a limiting pin are matched, and no limitation is made here.

[0059] Reference Figure 6 , Figure 7 In some embodiments of this utility model, the hinge further includes a connecting component 500, and the connecting seat 210 is hinged to the first page body component 100 through the connecting component 500, so that the second page body component 200 can rotate relative to the first page body component 100 to facilitate the opening or closing of the hinge.

[0060] As people's aesthetic demands for home decoration become increasingly stringent, visual appeal is required for every detail, including the aesthetics of doors. Traditional doors are primarily flat-edge doors, with smooth edges and the door leaf inside the door frame. Due to the installation of hinges, there is a gap of more than 3 millimeters between the flat-edge door and the door frame, inevitably resulting in poor sound insulation and airtightness. To meet the stringent requirements for sound insulation, heat insulation, and airtightness of entrance doors and bedroom doors, T-shaped doors emerged. Named for their T-shaped edges, the protruding part of the door presses against the door frame, creating a very tight fit between the door and the frame, resulting in better sound insulation than flat-edge doors. However, because the hinges currently used in T-shaped doors rotate around a single axis, the gap between the T-shaped door and the door frame needs to be increased to ensure smooth opening and closing, causing the T-shaped door to still suffer from poor sound insulation and airtightness.

[0061] Reference Figure 6 , Figure 7 In some embodiments of this utility model, the first page assembly 100 is provided with a first mounting groove 110, and the opposite sidewalls of the first mounting groove 110 are respectively provided with first sliding grooves 120. The connecting seat 210 is provided with a second mounting groove 213, and the opposite sidewalls of the second mounting groove 213 are respectively provided with second sliding grooves 214. The connecting assembly 500 includes a first connecting member 510 and a second connecting member 520. The middle position of the first connecting member 510 is hinged to the middle position of the second connecting member 520. One end of the first connecting member 510 is hinged to the first page assembly 100. The two sides of the other end of the first connecting member 510 are respectively inserted into the corresponding second sliding grooves 214. One end of the second connecting member 520 is hinged to the connecting seat 210. The two sides of the other end of the second connecting member 520 are respectively inserted into the corresponding first sliding grooves 120. When the hinge switches from the unfolded state to the closed state, the distance between one end of the second connecting member 520 and one end of the first connecting member 510 gradually increases, which can reduce the gap between the T-shaped door and the door frame.

[0062] For example, when the hinge is in the closed state, the distance between one end of the second connector 520 and one end of the first connector 510 is the smallest, and the distance between the other end of the second connector 520 and the other end of the first connector 510 is the largest. When the hinge switches from the closed state to the open state, the distance between one end of the second connector 520 and one end of the first connector 510 gradually increases, and the other end of the first connector 510 gradually approaches one end of the second connector 520. The other end of the second connector 520 gradually approaches one end of the first connector 510, and one end of the second connector 520 performs an eccentric rotational motion relative to one end of the first connector 510. This allows the edge of the T-shaped door near the door frame to move towards the direction of exiting the door frame first, and then rotate relative to the door frame when the T-shaped door is opened. This reduces the gap between the T-shaped door and the door frame and ensures that the T-shaped door does not interfere with the door frame, so that the T-shaped door can be opened smoothly.

[0063] Reference Figure 1 , Figure 2 According to the second aspect of the present invention, the door includes the hinge of the first aspect of the present invention. By providing a locking member 400, the locking member 400 can assist the adjusting bolt 300 in bearing the weight of the door body, so as to avoid excessive force on the adjusting bolt 300, thereby improving the service life of the hinge.

[0064] For example, the first hinge assembly 100 is connected to the door frame, and the connecting ear 220 is connected to the door body so that the door body can rotate. When it is necessary to adjust the relative position between the door frame and the door body, the connecting ear 220 and the connecting seat 210 can be unlocked by the locking member 400. Then, the user can turn the adjusting bolt 300 to make the connecting seat 210 move along the axial direction of the adjusting bolt 300, thereby adjusting the gap between the door frame and the door body to meet the preset requirements. After the door body is adjusted, the connecting ear 220 and the connecting seat 210 are locked by the locking member 400. The locking member 400 can assist the adjusting bolt 300 in bearing the weight of the door body to avoid excessive force on the adjusting bolt 300, thereby improving the service life of the hinge.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention 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 invention.

Claims

1. A hinge, characterized in that include: The first page body component (100) is used to connect to the door frame; The second page assembly (200) includes a connecting seat (210) and two connecting ears (220), the connecting ears (220) being used to connect to the door body, the connecting seat (210) being hinged to the first page assembly (100), one of the two connecting ears (220) being located on one side of the axial direction of the hinge axis of the connecting seat (210), and the other being located on the other side of the axial direction of the hinge axis of the connecting seat (210); An adjusting bolt (300) is provided between the connecting seat (210) and the corresponding connecting lug (220), and the adjusting bolt (300) is used to move the connecting seat (210) along the axial direction of the adjusting bolt (300); A locking member (400) is disposed between the connecting seat (210) and the corresponding connecting ear (220), and the locking member (400) is used to lock the connecting seat (210) and the corresponding connecting ear (220).

2. The hinge according to claim 1, wherein The connecting lug (220) includes a connecting plate (221) and a connecting block (222) disposed on the connecting plate (221). The connecting plate (221) and the connecting block (222) enclose a receiving groove (224). Along the axial direction of the hinge axis of the connecting seat (210), the two opposite sides of the connecting seat (210) are respectively provided with connecting protrusions (211). The connecting protrusions (211) are disposed in the corresponding receiving grooves (224). The adjusting bolt (300) passes through the connecting plate (221), the connecting protrusions (211) and the connecting block (222) in sequence, and the adjusting bolt (300) is threadedly engaged with the connecting protrusions (211).

3. The hinge of claim 2, wherein The locking member (400) includes a head (410) and a first rod (420). The head (410) is located at one end of the first rod (420). The first rod (420) is threadedly engaged with the connecting protrusion (211), and the end of the first rod (420) away from the head (410) is threadedly engaged with the connecting block (222). The head (410) abuts against the connecting plate (221).

4. The hinge of claim 2, wherein The adjusting bolt (300) includes a first abutting part (310), a second abutting part (320), and a second rod part (330). The first abutting part (310) is located at one end of the second rod part (330), and the second abutting part (320) is located at the other end of the second rod part (330). The second rod part (330) is provided with external threads. The second rod part (330) is threadedly engaged with the connecting seat (210). The first abutting part (310) abuts against the connecting plate (221), and the second abutting part (320) abuts against the connecting block (222).

5. The hinge of claim 4, wherein The connecting plate (221) and the connecting block (222) are an integral structure.

6. The hinge of claim 2, wherein A limiting structure is arranged between the connecting lug (220) and the connecting seat (210), and is used to limit the swinging of the connecting lug (220) relative to the connecting seat (210).

7. The hinge of claim 6, wherein The limiting structure comprises a limiting groove (223) and a limiting protrusion (212), one of which is arranged on the connecting lug (220) and the other is arranged on the connecting seat (210), the limiting protrusion (212) is accommodated in the limiting groove (223) and abuts against the sidewall of the limiting groove (223).

8. The hinge of claim 1, wherein The hinge further comprises a connecting assembly (500), and the connecting seat (210) is hinged to the first page body assembly (100) through the connecting assembly (500).

9. The hinge of claim 8, wherein, The first page body assembly (100) is provided with a first mounting groove (110), opposite sidewalls of the first mounting groove (110) are respectively provided with a first sliding groove (120), the connecting seat (210) is provided with a second mounting groove (213), opposite sidewalls of the second mounting groove (213) are respectively provided with a second sliding groove (214), the connecting assembly (500) comprises a first connecting piece (510) and a second connecting piece (520), a middle position of the first connecting piece (510) is hinged to a middle position of the second connecting piece (520), one end of the first connecting piece (510) is hinged to the first page body assembly (100), the other end of the first connecting piece (510) is respectively inserted into the corresponding second sliding groove (214) on both sides, one end of the second connecting piece (520) is hinged to the connecting seat (210), the other end of the second connecting piece (520) is respectively inserted into the corresponding first sliding groove (120) on both sides, when the hinge is switched from an unfolded state to a closed state, the distance between the one end of the second connecting piece (520) and the one end of the first connecting piece (510) gradually increases.

10. A door characterized in that, The hinge comprises the hinge according to any one of claims 1 to 9. The hinge comprises the hinge according to any one of claims 1 to 9.

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