A hinge and a door assembly

Abstract

The application relates to the technical field of door installation, and provides a hinge which comprises a mounting base, a sleeving piece, an adjusting piece and a pivoting piece. The mounting base is used for connecting a first to-be-installed piece; the sleeving piece is used for connecting a second to-be-installed piece; the adjusting piece is arranged in the sleeving piece and can rotate in the sleeving piece but cannot slide; the first end of the pivoting piece is rotationally connected with the mounting base, and the second end of the pivoting piece is threadedly connected with the adjusting piece. The hinge provided by the application can adjust the distance between the first to-be-installed piece and the second to-be-installed piece by rotating the adjusting piece. In the process of rotating the adjusting piece, the adjusting piece cannot easily slide, and the working reliability of the hinge is high. In addition, the hinge has higher safety when applied to a door assembly. The door frame can only move between the locking piece and the door column by rotating the adjusting piece, and the space between the locking piece and the door column is insufficient, so the door frame cannot be detached from the door column only by rotating the adjusting piece.

Description

Technical Field

[0001] This application relates to the field of door installation technology, and more particularly to a hinge and a door assembly. Background Technology

[0002] Existing hinge structures used for assembling doorposts and door frames are inconvenient to adjust the distance between the doorposts and door frames, and have low reliability after installation. The door frame may be disassembled when closed, posing a safety hazard. Summary of the Invention

[0003] In view of this, embodiments of this application provide a hinge and a door assembly that solve at least one of the aforementioned problems. The hinge and door assembly of this application are particularly suitable for gates installed on walls or fences for opening or blocking passageways or entrances.

[0004] One aspect of this application provides a hinge, including:

[0005] Mounting bracket, used to connect the first component to be installed;

[0006] A socket for connecting a second component to be installed;

[0007] An adjusting member is inserted into the sleeve, and the adjusting member can rotate within the sleeve but cannot slide.

[0008] A pivot member, the first end of which is rotatably connected to the mounting base, and the second end of which is threadedly engaged with the adjusting member.

[0009] In some embodiments, the adjusting member includes an adjusting end, a stopping end, and a tube. The adjusting end and the stopping end are located at opposite ends of the tube in the axial direction. The sleeve is fitted onto the outer peripheral wall of the tube, and the two ends of the sleeve abut against the adjusting end and the stopping end in the axial direction, respectively.

[0010] In some implementations, the end face of the stop facing away from the tube is a wedge face, and the tube is axially inserted into the sleeve under the guidance of the wedge face.

[0011] In some embodiments, the adjusting end is located outside the second component to be installed, and the peripheral sidewall of the adjusting end is formed with an operating portion that facilitates rotation of the adjusting component.

[0012] In some embodiments, the operating part is two opposing torsional planes; or, the operating part is a protrusion or groove; or, the operating part is a toothed structure.

[0013] In some embodiments, the tube is a hollow cylindrical structure, and at least one contraction groove is formed on the circumferential wall of the tube. The contraction groove extends along the axial direction of the tube and passes through the stop end.

[0014] In some embodiments, the axis of rotation of the pivot member rotatably connected to the mounting base is perpendicular to the axis of rotation of the adjusting member.

[0015] In some embodiments, the second end of the pivot member is provided with an adjusting screw, and a threaded hole is formed in the adjusting member, with the adjusting screw passing through the threaded hole.

[0016] In some embodiments, the first end of the pivot member is provided with a first pivot hole, the axial direction of the first pivot hole is perpendicular to the axial direction of the adjusting screw, the mounting base is formed with a second pivot hole coaxial with the first pivot hole, and the hinge includes a pivot shaft that passes through the first pivot hole and the second pivot hole.

[0017] In some embodiments, the mounting base includes two pivot plates arranged at relative intervals and a connecting plate connecting the two pivot plates. The connecting plate and the two pivot plates enclose an installation space. The first end of the pivot member is disposed within the installation space. Each of the two pivot plates forms a second pivot hole. The connecting plate is fixed to the first member to be installed.

[0018] This application also provides a door assembly, including a door frame, a door post, and a hinge as described in any one of the above, wherein one of the door frame and the door post is a first installation component, and the other of the door frame and the door post is a second installation component.

[0019] In some implementations, the second component to be installed has a fixing hole, the socket passes through and is fixed in the fixing hole, and the mounting base is fixed to the first component to be installed.

[0020] The hinge provided in this application embodiment has several advantages. Firstly, it features an adjusting member that can rotate around the axial direction of a socket but cannot slide along the axial direction of the socket. Rotating the adjusting member allows for adjustment of the distance between a first and a second component to be installed. Secondly, the adjusting member is rotatably fixed to the second component via the socket. During rotation, the adjusting member will not easily slip off, resulting in high reliability of the hinge. Thirdly, the hinge offers enhanced security when applied to door assemblies. When the door frame is closed and locked between the locking member and the doorpost, the adjusting member can only move the door frame between the locking member and the doorpost. Due to insufficient space between the locking member and the doorpost, the door frame cannot be directly removed from the doorpost using only the adjusting member. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a door assembly in one embodiment of this application;

[0022] Figure 2 for Figure 1 A structural diagram of the structure shown from another perspective;

[0023] Figure 3 for Figure 2 The enlarged view of point A in the structure shown schematically illustrates the main structure of the hinge.

[0024] Figure 4 This is a cross-sectional schematic diagram of a hinge in one embodiment of this application;

[0025] Figure 5 for Figure 1 The exploded view of the structure shown illustrates the main structure of the hinge.

[0026] Figure 6 for Figure 5 Enlarged view of section B of the structure;

[0027] Figure 7 This is a schematic diagram of the structure of the adjusting member in one embodiment of this application.

[0028] Explanation of reference numerals in the attached figures

[0029] Hinge 100; Mounting base 1; Second pivot hole 1a; Pivot plate 11; Connecting plate 12; Mounting space 1b; Sleeve 2; Circular through hole 2a; Fixed end 21; Adjusting part 3; Adjusting end 31; Operating part 31a; First stop surface 31b; Stop end 32; Wedge surface 32a; Second stop surface 32b; Tube part 33; Shrinkage groove 33a; Threaded hole 3a; Pivot 4; Adjusting screw 41; First pivot hole 4a; Pivot shaft 5; First part to be installed 6; Second part to be installed 7; Fixed hole 7a; Fastener 8; Door lock 9; Handle 91; Lock cylinder 92; Bolt 93. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0031] In the description of the embodiments of this application, "inner," "outer," and "vertical" orientations or positional relationships refer to the orientations or positional relationships of the door assembly during normal use. For example... Figures 1 to 5The orientation or positional relationship shown. The terms "first / second" are merely to distinguish different objects and do not indicate that they are the same or related. It should be understood that these orientation terms are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0032] One aspect of this application provides a hinge 100; please refer to... Figures 1 to 5 The hinge 100 includes a mounting base 1, a socket 2, an adjusting member 3, and a pivot member 4. The mounting base 1 is used to connect a first component 6 to be installed. The socket 2 is used to connect a second component 7 to be installed.

[0033] The hinge 100 provided in this application can be used in door assemblies; therefore, another aspect of the embodiments of this application provides a door assembly. Please refer to [link to relevant documentation]. Figures 1 to 5 The system includes a door frame, a doorpost, and a hinge 100 as described in any embodiment of this application. One of the door frame and the doorpost is a first installable component 6, and the other is a second installable component 7. For example, when the door frame is the first installable component 6, the doorpost is the second installable component 7, with a mounting base 1 connected to the door frame and a sleeve 2 connected to the doorpost. Conversely, when the doorpost is the first installable component 6, the door frame is the second installable component 7, with the mounting base 1 connected to the doorpost and the sleeve 2 connected to the door frame.

[0034] As an example, in one embodiment, please refer to Figure 1 and Figure 4 The gatepost can be fixed to a wall, such as the wall of a building or a fence. The gatepost extends vertically, and the door frame is located on one side of the gatepost. A hinge 100 is provided between the door frame and the gatepost. The mounting base 1 is fixed to the side wall of the door frame facing the gatepost, and the sleeve 2 is fixed to the side wall of the doorpost facing the door frame. The door frame is rotatably connected to the gatepost through the hinge 100, so that the door frame can rotate relative to the gatepost about the rotation axis of the pivot 4.

[0035] In one embodiment, the rotation axis of the pivot 4 is arranged vertically.

[0036] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 5A door lock 9 is installed on the side of the door frame away from the doorpost, and a locking member is installed on the side of the door lock 9 away from the door frame. A lock groove is formed on the side of the locking member facing the door lock 9. Specifically, rotating the handle 91 of the door lock 9 will drive the lock cylinder 92 of the door lock 9 to rotate synchronously. The rotation of the lock cylinder 92 will drive the bolt 93 of the door lock 9 to extend away from the door frame or retract towards the door frame. When the bolt 93 extends into the lock groove, the door frame is locked between the locking member and the doorpost, and the door frame cannot rotate relative to the doorpost around the rotation axis of the pivot member 4. After the bolt 93 retracts from the lock groove, the lock on the door frame is released, and the door frame can rotate relative to the doorpost around the rotation axis of the pivot member 4.

[0037] In one embodiment, please refer to Figure 4 and Figure 5 The door frame shape includes, but is not limited to, rectangles. The doorposts are hollow cylindrical structures, and their cross-sectional shapes include, but are not limited to, rectangles. Rectangular structures offer better manufacturability and are easier to process, while hollow tubular doorposts reduce product weight and save manufacturing costs.

[0038] In one embodiment, the locking member can be a fixed doorpost, a fixed wall, or other fixed structure.

[0039] In one embodiment, please refer to Figure 4 and Figure 6 The second component to be installed 7 has a fixing hole 7a, through which the sleeve 2 passes and is fixed, and the mounting base 1 is fixed to the first component to be installed 6. On the one hand, the fixing hole 7a facilitates the fixing of the sleeve 2, making the fixing of the sleeve 2 more secure. On the other hand, the sleeve 2 being disposed in the fixing hole 7a reduces the overall length of the hinge 100 in the circumferential direction of the second component to be installed 7, making the structure of the door assembly more compact. Specifically, in one embodiment, a fixing hole 7a is formed on the side wall in the circumferential direction of the doorpost, and the mounting base 1 is fixed to the side wall of the door frame facing the doorpost.

[0040] The fixing methods of the socket 2 and the fixing hole 7a include, but are not limited to, welding and riveting.

[0041] The fixing methods between the mounting base 1 and the first component to be installed 6 include, but are not limited to, welding, riveting, bolting, etc.

[0042] Multiple hinges 100 can be provided between the first installer 6 and the second installer 7. Correspondingly, there can also be multiple fixing holes 7a in the second installer 7. Multiple fixing holes 7a can cooperate with multiple hinges 100, making the installation of the first installer 6 on the second installer 7 more secure.

[0043] The adjusting member 3 is inserted into the sleeve 2. The adjusting member 3 can rotate within the sleeve 2 but cannot slide. Specifically, the sleeve 2 is a hollow cylindrical structure. The adjusting member 3 can rotate relative to the sleeve 2 about its axial direction, but cannot slide relative to the sleeve 2 along its axial direction. Since the sleeve 2 is fixed to the second part to be installed 7, the adjusting member 3 will also not slide relative to the second part to be installed 7.

[0044] The first end of the pivot member 4 is rotatably connected to the mounting base 1. Specifically, the rotation axis of the pivot member 4 is the rotation axis of the first end of the pivot member 4 that is rotatably connected to the mounting base 1.

[0045] The second end of the pivot member 4 is threadedly engaged with the adjusting member 3. Specifically, in one embodiment, please refer to... Figure 4 The rotation axis of the adjusting member 3 is perpendicular to the rotation axis of the pivot member 4 and the mounting base 1. When the adjusting member 3 rotates relative to the sleeve member 2, the second end of the pivot member 4 can slide toward or away from the second part to be installed 7, while the first end of the pivot member 4 is rotatably connected to the mounting base 1. The mounting base 1 is connected to the first part with the mounting member, so the first part to be installed 6 can also move closer to or away from the second part to be installed 7 as the pivot member 4 slides.

[0046] The hinge 100 provided in this embodiment has several advantages. Firstly, by providing an adjusting member 3 that can rotate around the axial direction of the sleeve 2 but cannot slide along the axial direction of the sleeve 2, the distance between the first installation part 6 and the second installation part 7 can be adjusted by rotating the adjusting member 3. Secondly, the adjusting member 3 is rotatably fixed to the second installation part 7 via the sleeve 2, and will not easily slip off during rotation, resulting in high reliability of the hinge 100. Thirdly, the hinge 100 provides higher security when applied to door assemblies. When the door frame is closed and locked between the locking member and the doorpost, rotating the adjusting member 3 can only move the door frame between the locking member and the doorpost. Due to insufficient space between the locking member and the doorpost, the door frame cannot be directly removed from the doorpost using only the rotating adjusting member 3.

[0047] In one embodiment, please refer to Figure 4The adjusting member 3 includes an adjusting end 31, a stopping end 32, and a tube 33. The adjusting end 31 and the stopping end are located at opposite ends of the tube 33 along its axial direction. Specifically, the adjusting end 31 is located at the end of the tube 33 facing the mounting base 1, and the stopping end 32 is located at the end of the tube 33 facing the second component 7 to be installed. The sleeve 2 is fitted onto the outer peripheral wall of the tube 33. Specifically, the sleeve 2 is a hollow cylindrical structure with a circular through hole 2a formed inside. The tube 33 is fitted into the circular through hole 2a, and the adjusting member 3 can rotate relative to the sleeve 2 about the axial direction of the circular through hole 2a. The two ends of the sleeve 2 along its axial direction abut against the adjusting end 31 and the stopping end 32, respectively. Specifically, the adjusting end 31 and the stopping end 32 are respectively formed with a first stopping surface 31b and a second stopping surface 32b facing the tube portion 33. The first stopping surface 31b and the second stopping surface 32b can respectively abut against the two ends of the sleeve 2 in the axial direction to prevent the adjusting member 3 from sliding in the axial direction of the circular through hole 2a.

[0048] The first stop surface 31b and the second stop surface 32b can be at a certain angle relative to the axial direction of the sleeve 2, or they can be perpendicular to the axial direction of the sleeve 2. In one embodiment, please refer to... Figure 4 and Figure 7 The first stop surface 31b and the second stop surface 32b are both perpendicular to the axial direction of the sleeve 2. At this time, the direction of the abutment force of the first stop surface 31b and the second stop surface 32b relative to the sleeve 2 is parallel to the axial direction of the sleeve 2. The adjusting member 3 is difficult to slide and dislodge along the axial direction of the sleeve 2. The first stop surface 31b and the second stop surface 32b have good stopping and anti-dislodgement effects.

[0049] In one embodiment, please refer to Figures 4 to 6 The second component to be installed, 7, is a tubular hollow doorpost. A ring-shaped fixing end 21 is formed on the outer peripheral wall of one axial end of the sleeve 2. The outer diameter of the fixing end 21 is larger than the diameter of the fixing hole 7a. The end of the sleeve 2 away from the fixing end 21 passes through the fixing hole 7a from the outside of the doorpost. The fixing end 21 abuts against the peripheral wall of the doorpost and is located on the outside of the doorpost. The fixing end 21 facilitates welding of the sleeve 2 onto the doorpost and prevents the sleeve 2 from accidentally sliding into the doorpost during operation, resulting in high installation convenience and reliability. Furthermore, the circular through hole 2a inside the sleeve 2 is a smooth hole without threads, allowing it to be galvanized and / or painted along with the doorpost after welding.

[0050] In one embodiment, please refer to Figure 4 and Figure 7The second end of the pivot member 4 is provided with an adjusting screw 41, and a threaded hole 3a is formed in the adjusting member 3, through which the adjusting screw 41 passes. For example, the tube 33, the adjusting end 31, and the stop end 32 are all annular structures with threaded holes 3a. The rotation axis of the adjusting screw 41 and the threaded hole 3a is perpendicular to the rotation axis of the pivot member 4 and the mounting base 1. Rotating the adjusting member 3 can make the pivot member 4 slide along the axial direction of the sleeve member 2, thereby adjusting the distance between the first to be installed member 6 and the second to be installed member 7.

[0051] Similarly, in one embodiment, the adjusting member 3 has a screw at one end facing the pivot member 4, and the second end of the pivot member 4 has a screw hole, with the screw passing through the screw hole. Rotating the adjusting member 3 also allows the pivot member 4 to slide along the axial direction of the sleeve member 2, thereby adjusting the distance between the first installable member 6 and the second installable member 7.

[0052] In one embodiment, please refer to Figure 4 and Figure 7 The end face of the stop end 32 facing away from the tube portion 33 is a wedge surface 32a. Guided by the wedge surface 32a, the tube portion 33 is axially inserted into the sleeve 2. Specifically, the wedge surface 32a is a conical surface, and the outer diameter of the conical surface gradually increases in the axial direction from away from the tube portion 33 to near the tube portion 33. The wedge surface 32a facilitates the smooth sliding of the adjusting member 3 into the sleeve 2, making the installation of the adjusting member 3 on the sleeve 2 easier.

[0053] In one embodiment, please refer to Figure 4 The adjusting end 31 is located outside the second part to be installed 7. Specifically, the second part to be installed 7 is a doorpost, and the adjusting end 31 is an annular disc with an outer diameter larger than that of the tube 33. The adjusting end 31 is located outside the doorpost and abuts against the side of the fixed end 21 away from the doorpost. Compared with the adjusting end 31 being located inside the doorpost, the adjusting end 31 being located outside the doorpost allows personnel to operate the adjusting end 31 to rotate more conveniently. Compared with conventional nut adjustment, the adjusting end 31 will not slide along the axial direction of the sleeve 2 when rotating, thus avoiding the situation where the adjusting end 31 slips off axially when rotating.

[0054] In one embodiment, the peripheral sidewall of the adjusting end 31 is formed with an operating portion 31a to facilitate rotation of the adjusting member 3. This allows a person to easily rotate the adjusting member 3 using an installation tool via the operating portion 31a. For example, in one embodiment, please refer to... Figure 7 The operating part 31a consists of two opposing torsional planes. The two torsional planes are arranged parallel to each other on the peripheral sidewall of the adjusting end 31, and personnel can easily use wrenches, pliers or other installation tools to clamp the two torsional planes and rotate the adjusting end 31.

[0055] In one embodiment, the operating part 31a is a protrusion or a groove. A person can use a wrench that matches the protrusion or groove to hold the protrusion or rotate the adjusting end 31 by placing the wrench inside the groove.

[0056] In one embodiment, the operating part 31a has a toothed structure. A person can use a wrench with an internal toothed ring that matches the toothed structure to rotate the adjusting end 31 by engaging the internal toothed ring with the toothed structure.

[0057] In one embodiment, please refer to Figure 4 and Figure 7 The tube 33 is a hollow cylindrical structure. At least one contraction groove 33a is formed on the circumferential wall of the tube 33, penetrating the circumferential wall and extending axially along the tube 33 to pass through the stop end 32. Specifically, a threaded hole 3a for engaging with the adjusting screw 41 is formed inside the tube 33, and the contraction grooves 33a are evenly spaced around the circumference of the tube 33. The adjusting member 3 is made of an elastic material; for example, it can be a plastic or metal part. It should be noted that an elastic material is one that deforms under external force and quickly returns to its original shape after the external force is removed.

[0058] As the adjusting member 3 extends into the circular through hole 2a along the axial direction of the sleeve 2, the peripheral wall of the circular through hole 2a presses against the stop end 32, causing the stop end 32 and the tube 33 to undergo elastic deformation towards the axis. The shrinkage groove 33a provides deformation space for the stop end 32 and the tube 33, allowing the stop end 32 to pass smoothly through the sleeve 2. After the stop end 32 passes through the sleeve 2, the sleeve 2 no longer presses against the stop end 32. Under the action of its own elastic restoring force, the stop end 32 and the tube 33 return to their undeformed state. At this time, the tube 33 is completely fitted into the circular through hole 2a of the sleeve 2, and the two axial ends of the sleeve 2 abut against the first stop surface 31b and the second stop surface 32b, respectively.

[0059] In one embodiment of this application, the sleeve 2 is first welded into the fixing hole 7a of the doorpost. After welding, it is galvanized and / or painted along with the doorpost. Then, the adjusting member 3 is installed into the circular through hole 2a of the galvanized and / or painted sleeve 2. Finally, the adjusting screw 41 is installed into the threaded hole 3a of the adjusting member 3. Since the circular through hole 2a is a smooth hole without threads, the galvanization and / or painting of the sleeve 2 along with the doorpost will not affect the subsequent installation of the adjusting member 3. Since the galvanization and / or painting are completed before the installation of the adjusting member 3, the galvanization and / or painting will not damage the threaded hole 3a of the adjusting member 3 or the threads of the adjusting screw 41. Therefore, the adjusting member 3 can reliably adjust the distance between the doorpost and the door frame.

[0060] In one embodiment, please refer to Figure 4The first end of the pivot member 4 is provided with a first pivot hole 4a, the axis of which is perpendicular to the axis of the adjusting screw 41. The mounting base 1 has a second pivot hole 1a coaxial with the first pivot hole 4a. The hinge 100 includes a pivot shaft 5, which passes through the first pivot hole 4a and the second pivot hole 1a. Specifically, the rotation axis of the mounting base 1 and the pivot member 4 is coaxial with the axes of the pivot shaft 5, the first pivot hole 4a, and the second pivot hole 1a. The axis of the first pivot hole 4a is perpendicular to the axis of the adjusting screw 41.

[0061] In one embodiment, please refer to Figure 4 The mounting base 1 includes two pivot plates 11 arranged at relative intervals and a connecting plate 12 connecting the two pivot plates 11. The connecting plate 12 and the two pivot plates 11 enclose an installation space 1b. The first end of the pivot member 4 is located in the installation space 1b. The two pivot plates 11 each form a second pivot hole 1a. The connecting plate 12 is fixed to the first member to be installed 6.

[0062] The connecting plate 12 is fixed to the first part to be installed 6 by means including but not limited to welding, bolt connection, screw connection, etc.

[0063] The pivot shaft 5 includes, but is not limited to, rod-shaped connecting parts such as screws, bolts, or pins 93. To prevent axial movement of the pivot shaft 5, the hinge 100 may also be equipped with corresponding fasteners 8 fitted onto the pivot shaft 5 for fastening, such as nuts.

[0064] Specifically, in one embodiment, please refer to Figure 4 The first component to be installed, 6, is a door frame. The mounting base 1 is roughly U-shaped. The pivot shaft 5 is a bolt, and the fastener 8 is a nut. The connecting plate 12 is arranged vertically and welded to the periphery of the door frame. The upper and lower ends of the connecting plate 12 are connected to two horizontally arranged pivot plates 11. The pivot shaft 5 is arranged vertically and passes through the first pivot hole 4a of the pivot component 4 and the two second pivot holes 1a of the two pivot plates 11, respectively, and is fixed by the fastener 8.

[0065] It should be noted that various known technologies can be used to manufacture the various components of this application, such as casting, molding, extrusion, and deforming plates into desired shapes. Unless otherwise specified, all components of this application are made of metal, especially stainless steel.

[0066] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A door assembly, the door assembly comprising a door frame, a door post, and a hinge, the hinge comprising: Mounting base, the mounting base being fixed to a first component to be installed, the first component to be installed being one of the door frame and the door post; A socket for connecting a second component to be installed, the second component being another of the door frame and door post, wherein the second component to be installed has a fixing hole, and the socket passes through the fixing hole and is fixed in the fixing hole; An adjusting member is inserted into the sleeve, and the adjusting member can rotate within the sleeve but cannot slide. A pivot member, the first end of which is rotatably connected to the mounting base, and the second end of which is threadedly engaged with the adjusting member. The adjusting component includes an adjusting end, a stopping end, and a tube. The adjusting end and the stopping end are located at opposite ends of the tube in the axial direction. The sleeve is fitted onto the outer peripheral wall of the tube, and its two ends in the axial direction abut against the adjusting end and the stopping end, respectively, so that the adjusting component can rotate within the sleeve but cannot slide within it. The tube is a hollow cylindrical structure, and at least one contraction groove is formed on the circumferential wall of the tube. The contraction groove extends through the circumferential wall of the tube and extends axially along the tube and through the stop end. The circular through hole in the socket is a smooth, unthreaded hole. The socket is galvanized and / or painted along with the door post, and the galvanizing and / or painting is completed before the adjusting component is installed. The second end of the pivot member is provided with an adjusting screw, and a threaded hole is formed in the adjusting member, with the adjusting screw passing through the threaded hole.

2. The door assembly according to claim 1, characterized in that, The end face of the stop head facing away from the tube is a wedge face, and the tube is axially inserted into the sleeve under the guidance of the wedge face.

3. The door assembly according to claim 1, characterized in that, The adjustment end is located outside the second component to be installed, and the peripheral sidewall of the adjustment end has an operating part that facilitates the rotation of the adjustment component.

4. The door assembly according to claim 3, characterized in that, The operating part is two opposing torsional planes; or, the operating part is a protrusion or groove; or, the operating part is a toothed structure.

5. The door assembly according to claim 1, characterized in that, The axis of rotation of the pivot member, which is rotatably connected to the mounting base, is perpendicular to the axis of rotation of the adjusting member.

6. The door assembly according to claim 1, characterized in that, The first end of the pivot member is provided with a first pivot hole, the axial direction of the first pivot hole is perpendicular to the axial direction of the adjusting screw, the mounting base is formed with a second pivot hole coaxial with the first pivot hole, and the hinge includes a pivot shaft, which passes through the first pivot hole and the second pivot hole.

7. The door assembly according to claim 6, characterized in that, The mounting base includes two pivot plates arranged at relative intervals and a connecting plate connecting the two pivot plates. The connecting plate and the two pivot plates enclose an installation space. The first end of the pivot member is disposed in the installation space. Each of the two pivot plates forms a second pivot hole. The connecting plate is fixed to the first member to be installed.

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