A sliding hinge and a door assembly using the same

Abstract

The application discloses a sliding hinge and a door assembly applying the same, relates to the technical field of hinges, and comprises a fixing base, a sliding base and a rotating base, the fixing base is fixedly connected with a door frame, the rotating base is fixedly connected with a door leaf, a sliding hole is formed in the fixing base, the sliding base is slidingly arranged in the sliding hole, one end of the sliding base extends out of the fixing base, and the rotating base is rotationally arranged at the end of the sliding base extending out of the fixing base. When the door leaf is opened, the door leaf is first slid, the rotating base drives the sliding base to slide in the sliding hole of the fixing base, then the door leaf is rotated, and the rotating base rotates on the sliding base, so that the door leaf can be opened, the opening movement track of the door leaf is changed from rotation to translation and then rotation, the occupation of space by the rotating radius of the door leaf is fundamentally eliminated, the space reserved between the door frame and the door leaf is reduced, and therefore the sealing performance of the door assembly is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of hinge technology, and in particular to a sliding hinge and a door assembly using the hinge. Background Technology

[0002] Traditional hinges are mechanical connectors that allow objects such as doors, windows, and cabinet doors to rotate around an axis. At their core is a simple lever and bearing structure, using a combination of two leaf plates and a shaft to allow objects to rotate and open in one or both directions around a fixed axis.

[0003] Currently, while traditional rotating hinge structures are sturdy, durable, and inexpensive, their movement trajectory is circular. When the door leaf moves in an arc around a fixed axis, sufficient rotation radius space must be reserved between the door frame and the door leaf. To ensure smooth door leaf rotation, a larger door gap is necessary, directly weakening the airtightness of the door assembly. Summary of the Invention

[0004] To improve the sealing performance of door assemblies, this application provides a sliding hinge and a door assembly using the hinge.

[0005] Firstly, the sliding hinge provided in this application adopts the following technical solution:

[0006] A sliding hinge includes a fixed base, a sliding base, and a rotating base. The fixed base is fixedly connected to a door frame, and the rotating base is fixedly connected to a door leaf. The fixed base has a sliding hole, and the sliding base is slidably disposed in the sliding hole. One end of the sliding base extends out of the fixed base, and the rotating base is rotatably disposed at the end of the sliding base that extends out of the fixed base.

[0007] By adopting the above technical solution, a sliding hinge is formed using a fixed seat, a sliding seat, and a rotating seat. When opening the door, the door first slides, and the rotating seat drives the sliding seat to slide within the sliding hole of the fixed seat. Then, the door rotates, and the rotating seat rotates on the sliding seat, thus opening the door. This design changes the door's opening trajectory from rotation to translation followed by rotation, fundamentally eliminating the space occupied by the door's rotation radius and reducing the space reserved between the door frame and the door, thereby significantly improving the sealing performance of the door assembly.

[0008] Preferably, a fixing pin is provided in the fixing seat, the fixing pin is located in the sliding hole, and an oblong groove is formed in the sliding seat along its own sliding direction, through which the fixing pin passes.

[0009] By adopting the above technical solution, when the sliding seat slides within the sliding hole of the fixed seat, it will drive the waist-shaped groove to slide synchronously. The waist-shaped groove slides on the fixing pin. When the end of the waist-shaped groove slides and abuts against the fixing pin, the fixing pin limits the sliding seat. In this way, the fixed pin and the waist-shaped groove are used to limit the movement stroke of the sliding seat, making the movement stroke of the sliding seat more precise.

[0010] Preferably, the fixed seat is provided with an elastic pin, and the side wall of the sliding seat is provided with two limiting grooves. The end of the elastic pin abuts against the side wall of the sliding seat. When one end of the waist-shaped groove abuts against the fixed pin, the end of the elastic pin is inserted into the limiting groove.

[0011] By adopting the above technical solution, when the end of the waist-shaped groove slides against the fixing pin, the fixing pin limits the sliding seat, and at the same time, the end of the elastic pin is inserted into the limiting groove, thereby limiting the position of the sliding seat and preventing the sliding seat from continuing to slide in the sliding hole of the fixing seat, thus improving the stability of the door when it is open and closed.

[0012] Preferably, the cross-section of the sliding seat is rectangular, and the width of the sliding seat is greater than its height.

[0013] By adopting the above technical solution, the rectangular cross-section makes the sliding seat more stable when sliding, and the width of the sliding seat is greater than its height, which makes the sliding seat more supportive.

[0014] Preferably, the rotating seat has two connecting arms spaced apart at the end near the sliding seat. The two connecting arms are located on the upper and lower sides of the sliding seat and are rotatably connected to the end of the sliding seat.

[0015] By adopting the above technical solution, the rotating seat is rotatably mounted on the sliding seat through two connecting arms, which improves the stability of the rotating seat and makes the door leaf rotate more stably.

[0016] Preferably, the rotating base has multiple first connecting holes.

[0017] By adopting the above technical solution, the bolts on the door leaf are inserted into the first connecting hole, and the bolts fix the door leaf and the rotating seat through the first connecting hole, making the installation of the rotating seat more stable.

[0018] Preferably, the bottom of the fixing base is provided with a fixing plate, and the fixing plate has a plurality of second connecting holes.

[0019] By adopting the above technical solution, the bolts on the door frame are inserted into the second connecting hole, and the bolts are used to fix the door frame and the fixing plate through the second connecting hole, making the installation of the fixing seat more stable.

[0020] Preferably, the sliding seat has a first slider slidably disposed on the side of the waist-shaped groove away from the rotating seat. The first slider moves to abut against the fixing pin. The sliding seat has a first sliding groove on the side of the waist-shaped groove away from the rotating seat. A second slider is slidably disposed in the first sliding groove. A limiting groove is formed on the second slider on the side away from the waist-shaped groove. An adjusting rod is internally threaded on the end of the sliding seat away from the rotating seat. The first slider is rotatably disposed on the end of the adjusting rod, and the second slider is rotatably disposed on the adjusting rod.

[0021] By adopting the above technical solution, the sliding hinge requires different sliding strokes when applied to different door components. By rotating the adjusting rod, the adjusting rod drives the first slider to move in the waist-shaped groove, and the adjusting rod drives the second slider to move in the first sliding groove. The length of the waist-shaped groove and the distance between the two limiting grooves are adjusted simultaneously, thereby adjusting the movement stroke of the sliding seat.

[0022] Preferably, the outer wall of the adjusting rod is provided with multiple locking grooves at equal intervals along its circumference. A mounting block is provided on the end wall of the sliding seat away from the rotating seat. A first push rod is slidably mounted on the side of the mounting block near the adjusting rod. A first elastic element is provided inside the mounting block to push the first push rod towards the adjusting rod. A locking block is fixedly mounted on the end of the first push rod near the adjusting rod, and the locking block is slidably inserted into the locking groove. A second push rod is slidably mounted on the end of the adjusting rod away from the first slider. A second elastic element is provided inside the adjusting rod to push the second push rod away from the first slider. A push block is fixedly mounted on the second push rod. A sealing block is slidably mounted on the adjusting rod in each locking groove along its own radial direction. The push block moves to abut against the sealing block and seals the locking groove.

[0023] By adopting the above technical solution, when adjusting the rod, the second push rod is first slid into the rod. The second push rod drives the push block to move, and the push block pushes the sealing block to move and seal the locking groove, so that the locking block will not affect the rotation of the rod. After the rod is adjusted, the second push rod is released, and the second elastic element pushes the second push rod to move and reset. The second push rod drives the push block to move and reset, so that the sealing block returns to its sliding state in the locking groove. At this time, the rod is slightly rotated, and the first elastic element pushes the locking block to slide into the locking groove through the first push rod, thereby locking the rotation of the rod.

[0024] Secondly, the door component provided in this application adopts the following technical solution:

[0025] A door assembly employing the aforementioned sliding hinge further includes a door frame and a door leaf, wherein the fixed seat is fixedly mounted on the door frame and the rotating seat is fixedly mounted on the door leaf.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. A sliding hinge is formed by a fixed seat, a sliding seat, and a rotating seat. When opening the door, the door is first slid, and the rotating seat drives the sliding seat to slide within the sliding hole of the fixed seat. Then the door is rotated, and the rotating seat rotates on the sliding seat, thus opening the door. This changes the opening trajectory of the door from rotation to translation followed by rotation, fundamentally eliminating the space occupied by the door's rotation radius and reducing the space reserved between the door frame and the door, thereby significantly improving the sealing performance of the door assembly.

[0028] 2. With the help of the fixing pin and the waist-shaped groove, when the sliding seat slides within the sliding hole of the fixing seat, it will drive the waist-shaped groove to slide synchronously. The waist-shaped groove slides on the fixing pin. When the end of the waist-shaped groove slides and abuts against the fixing pin, the fixing pin limits the sliding seat. In this way, the fixed pin and the waist-shaped groove limit the movement stroke of the sliding seat, making the movement stroke of the sliding seat more precise.

[0029] 3. Through the elastic pin and the limiting groove, when the end of the waist-shaped groove slides against the fixed pin, the fixed pin limits the sliding seat. At the same time, the end of the elastic pin is inserted into the limiting groove, thereby limiting the position of the sliding seat and preventing the sliding seat from continuing to slide in the sliding hole of the fixed seat, thus improving the stability of the door when it is open and closed. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the sliding hinge in Embodiment 1 of this application;

[0031] Figure 2 This is an exploded cross-sectional view of the overall structure of the sliding hinge in Embodiment 1 of this application.

[0032] Figure 3 This is a reverse exploded sectional view of the overall structure of the sliding hinge in Embodiment 1 of this application;

[0033] Figure 4 This is a schematic diagram of the overall structure of the door assembly in Embodiment 1 of this application;

[0034] Figure 5 This is a schematic diagram of the overall structure of the door assembly in Embodiment 1 of this application, to highlight the sliding state of the sliding seat;

[0035] Figure 6 This is a schematic diagram of the overall structure of the door assembly in Embodiment 1 of this application, to highlight the sliding rotation state;

[0036] Figure 7 This is a schematic diagram of the overall structure of the sliding hinge in Embodiment 2 of this application;

[0037] Figure 8 This is a partial structural diagram of the sliding hinge in Embodiment 2 of this application;

[0038] Figure 9 This is an exploded cross-sectional view of a portion of the sliding hinge structure in Embodiment 2 of this application;

[0039] Figure 10 This is a partial structural cross-sectional view of the sliding hinge in Embodiment 2 of this application;

[0040] Figure 11 This is a partial structural cross-sectional view of the sliding hinge in Embodiment 2 of this application, to highlight the state of the sealing block blocking the locking groove;

[0041] Figure 12 This is a partial structural cross-sectional view of the sliding hinge in Embodiment 2 of this application, to highlight the state where the sealing block is not sealing the locking groove;

[0042] Figure 13 For this application Figure 11 Enlarged diagram of point A in the middle.

[0043] Reference numerals: 1. Fixed seat; 2. Sliding seat; 3. Rotating seat; 4. Door leaf; 5. Door frame; 6. Sliding hole; 7. Fixing pin; 8. Waist-shaped groove; 9. Elastic pin; 10. Limiting groove; 11. Connecting arm; 12. First connecting hole; 13. Second connecting hole; 14. Fixing plate; 15. First slider; 16. Second slider; 161. Block; 162. Plate; 17. First sliding groove; 18. Adjusting rod; 19. Locking groove; 20. Mounting block; 21. First push rod; 22. First elastic element; 23. Locking block; 24. Second push rod; 25. Second elastic element; 26. Push block; 27. Sealing block; 28. First guide block; 29. ​​First guide groove; 30. Second guide block; 31. Second guide groove; 33. Positioning block; 34. Positioning groove; 35. Knob; 36. Wedge block; 37. Second sliding groove. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1-13 This application will be described in further detail.

[0045] Example 1:

[0046] This application discloses a sliding hinge.

[0047] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4A sliding hinge includes a fixed seat 1, a sliding seat 2, and a rotating seat 3. The bottom of the fixed seat 1 is integrally formed with a fixed plate 14. Two second connecting holes 13 are opened at intervals in the fixed plate 14. By passing bolts through the second connecting holes 13 that are aligned with the door frame 5 and the fixed plate 14 and tightening them, the two can be reliably fixed, thereby installing the fixed seat 1 on the door frame 5.

[0048] A sliding hole 6 is formed within the fixed base 1 along its length. A sliding base 2 is slidably installed within the sliding hole 6, with both ends of the sliding base 2 located outside the fixed base 1 along its length. Both the sliding base 2 and the sliding hole 6 have rectangular cross-sections, and the width of the sliding base 2 is greater than its own thickness. The sliding base 2 can slide within the sliding hole 6 of the fixed base 1.

[0049] Two connecting arms 11 are integrally formed at one end of the rotating base 3 along its length. The connecting arms 11 are perpendicular to the rotating base 3, and the angle between the connecting arms 11 and the rotating base 3 is between 120° and 160°. The ends of the two connecting arms 11 away from the rotating base 3 are located on the upper and lower sides of the end of the sliding base 2, and the two connecting arms 11 are rotatably mounted on the end of the sliding base 2.

[0050] The rotating base 3 has two first connecting holes 12 spaced apart inside. By inserting bolts through the first connecting holes 12 that align the door leaf 4 with the rotating base 3 and tightening them, a reliable fixation between the two can be achieved, thereby installing the rotating base 3 on the door leaf 4. The door leaf 4, the door frame 5, and the sliding hinge constitute the door assembly.

[0051] A fixing pin 7 is fixedly installed inside the fixed base 1, with the middle part of the fixing pin 7 located inside the sliding hole 6. A waist-shaped groove 8 is formed inside the sliding base 2 along its own length, with the middle part of the fixing pin 7 located inside the waist-shaped groove 8. During the movement of the sliding base 2, the waist-shaped groove 8 is moved, and the fixing pin 7 limits the movement stroke of the sliding base 2 through the waist-shaped groove 8.

[0052] An elastic pin 9 is fixedly installed inside the fixed base 1. Two limiting grooves 10 are spaced apart along the length of the sliding base 2 on its bottom wall. The two limiting grooves 10 are located on the side of the waist-shaped groove 8 away from the rotating base 3. The end of the elastic pin 9 abuts against the bottom wall of the sliding base 2 or is inserted into the limiting groove 10. When the elastic pin 9 is inserted into the limiting groove 10, the elastic pin 9 can position the sliding base 2 through the limiting groove 10.

[0053] The implementation principle of a sliding hinge in this application embodiment is as follows: when the door leaf 4 is opened, the door leaf 4 first slides in a straight line (refer to...). Figure 5 At this time, the door leaf 4 drives the sliding seat 2 to move horizontally within the fixed seat 1 via the rotating seat 3. When the sliding seat 2 drives one end of the waist-shaped groove 8 to abut against the fixing pin 7, the fixing pin 7 blocks the sliding seat 2. At the same time, the elastic pin 9 inserts into a limiting groove 10 to position the sliding seat 2, and the door leaf 4 then rotates (refer to...). Figure 6 At this time, door leaf 4 drives rotating seat 3 to rotate on sliding seat 2; similarly, when door leaf 4 is closed, door leaf 4 is rotated first, and then slides linearly to close. After door leaf 4 is slid closed, sliding seat 2 drives the other end of waist-shaped groove 8 to abut against fixing pin 7. Fixing pin 7 blocks sliding seat 2, and at the same time, elastic pin 9 is inserted into another limiting groove 10 to position sliding seat 2. By changing the opening movement trajectory of door leaf 4 from rotation to translation followed by rotation, the space occupied by the rotation radius of door leaf 4 is fundamentally eliminated, and the reserved space between door frame 5 and door leaf 4 is reduced, thereby significantly improving the sealing performance of door components.

[0054] Example 2:

[0055] Reference Figure 7 , Figure 8 and Figure 9 The difference between this embodiment and Embodiment 1 is that the sliding seat 2 is slidably mounted with a first slider 15 along the length of the waist-shaped groove 8 within the waist-shaped groove 8. The first slider 15 is recessed on the side near the fixing pin 7. Two first guide blocks 28 are fixedly mounted on each of the opposite side walls of the first slider 15 along its perpendicular sliding direction. Two first guide grooves 29 are formed on each of the two side walls of the sliding seat 2 along the width direction of the waist-shaped groove 8. The four first guide blocks 28 are slidably mounted in the four first guide grooves 29 respectively. The first guide blocks 28 slide within the first guide grooves 29 and guide the sliding of the first slider 15, making the sliding of the first slider 15 within the waist-shaped groove 8 more stable.

[0056] A first sliding groove 17 is formed along the length of the sliding seat 2 on the side of the waist-shaped groove 8 away from the rotating seat 3. A second slider 16 is slidably installed in the first sliding groove 17 along its length. The second slider 16 includes a block 161 and a plate 162. A limiting groove 10 on the side away from the waist-shaped groove 8 is formed on the bottom wall of the block 161. The plate 162 is fixedly installed on the bottom side wall of the block 161 near the rotating seat 3. A second sliding groove 37 is formed on the bottom wall of the sliding seat 2, connecting the first sliding groove 17 and the limiting groove 10 near the waist-shaped groove 8. The plate 162 slides in the second sliding groove 37, and the ends of the plate 162 and the second sliding groove 37 near the waist-shaped groove 8 are both formed with inclined surfaces to facilitate the movement of the elastic pin.

[0057] Two second guide blocks 30 are fixedly installed on each of the opposite side walls of the block 161 along its perpendicular sliding direction. Two second guide grooves 31 are formed on each of the two side walls of the sliding seat 2 along the width direction of the first sliding groove 17. The four second guide blocks 30 are slidably installed within the four second guide grooves 31. The second guide blocks 30 slide within the second guide grooves 31 and guide the sliding of the block 161, making the sliding of the block 161 within the first sliding groove 17 more stable.

[0058] During the movement of block 161, plate 162 moves synchronously. Plate 162 slides in the second slide groove 37 and covers the bottom opening of the first slide groove 17, so that elastic pin 9 can move smoothly between the two limiting grooves 10.

[0059] An adjusting rod 18 is threaded along its length at the end of the sliding seat 2 away from the rotating seat 3. The adjusting rod 18 passes through the first sliding groove 17, and the block 161 is rotatably mounted on the adjusting rod 18. The end of the adjusting rod 18 near the rotating seat 3 extends into the waist-shaped groove 8 and is rotatably connected to the first slider 15. The end of the adjusting rod 18 away from the rotating seat 3 is located outside the sliding seat 2.

[0060] To accommodate the sliding travel requirements of different door components, the sliding hinge incorporates an adjusting rod 18. Rotating the adjusting rod 18 simultaneously moves the first slider 15 within the oblong groove 8 and the second slider 16 within the first sliding groove 17. This simultaneously alters the effective length of the oblong groove 8 and the distance between the two limiting grooves 10, thereby achieving precise adjustment of the sliding travel of the sliding seat 2.

[0061] Reference Figure 10 , Figure 11 and Figure 12 Mounting blocks 20 are fixedly installed on the end wall of the sliding seat 2 away from the rotating seat 3 and on opposite sides of the adjusting rod 18. A first push rod 21 is slidably installed radially along the adjusting rod 18 on the side of each mounting block 20 that is close to each other. A locking block 23 is fixedly installed at the end of each first push rod 21 that is close to each other. A first elastic element 22 is installed inside each mounting block 20. One end of the first elastic element 22 abuts against the inner wall of the mounting block 20, and the other end abuts against the end of the first push rod 21 away from the locking block 23. In this application, the first elastic element 22 can be a spring, and the first elastic element 22 pushes the locking block 23 to move and abut against the adjusting rod 18 via the first push rod 21.

[0062] A locking groove 19 is formed on the outer wall of the end of the adjusting rod 18 away from the rotating seat 3 along its own axis. Eight locking grooves 19 are equally spaced around the circumference of the adjusting rod 18. When the first elastic element 22 moves the locking block 23 into the locking groove 19 via the first push rod 21, the locking block 23 locks the adjusting rod 18, preventing the adjusting rod 18 from rotating, thereby locking the positions of the first slider 15 and the second slider 16.

[0063] A second push rod 24 is slidably mounted on the end of the adjusting rod 18 away from the rotating seat 3 along its own axis. The cross-section of the second push rod 24 is rectangular. The end of the second push rod 24 away from the rotating seat 3 extends out of the adjusting rod 18 and is fixedly mounted with a knob 35. A second elastic element 25 is installed inside the adjusting rod 18. One end of the second elastic element 25 abuts against the inner wall of the adjusting rod 18, and the other end abuts against the end of the adjusting rod 18 away from the knob 35. In this application, the second elastic element 25 can be selected as a spring. The second elastic element 25 pushes the second push rod 24 to move, and the second push rod 24 drives the knob 35 to move away from the adjusting rod 18.

[0064] Two push blocks 26 are fixedly installed at intervals on the second push rod 24. The push blocks 26 are annular and fixedly sleeved on the second push rod 24. The side of the push block 26 near the second elastic member 25 has a conical surface. The adjusting rod 18 is located in each locking groove 19 and a sealing block 27 is slidably installed along its own diameter direction. Two wedge blocks 36 are fixedly installed at intervals on the bottom wall of the sealing block 27 near the second push rod 24.

[0065] When the knob 35 is pressed, the knob 35 drives the second push rod 24 to move and squeeze the second elastic element 25. At the same time, the second push rod 24 drives the two push blocks 26 to move. The conical surface of the push block 26 moves to abut the wedge surface of the wedge block 36 and drives the sealing block 27 to move to seal the locking groove 19, so that the locking block 23 will not enter the locking groove 19 during the adjustment process of the adjusting rod 18.

[0066] Reference Figure 13 Each blocking block 27 has a positioning block 33 fixedly installed at both ends along its length. The adjusting rod 18 has positioning grooves 34 at both ends along its length in each locking groove 19. The two positioning blocks 33 are slidably installed within the two positioning grooves 34 along the diameter of the adjusting rod 18. When the blocking block 27 moves, it causes the positioning blocks 33 to move within the positioning grooves 34. The cooperation between the positioning blocks 33 and the positioning grooves 34 prevents the blocking block 27 from sliding out of the locking groove 19.

[0067] The implementation principle of Example 2 is as follows: To adapt to the sliding stroke requirements of different door components, the sliding hinge has a built-in adjusting rod 18. During adjustment, the second push rod 24 is first pushed inward by the knob 35, which moves the push block 26 and the blocking block 27 in conjunction, temporarily closing the lock groove 19 to release the restriction of the lock block 23 (see reference). Figure 11 Then, rotate knob 35. Knob 35 drives adjusting rod 18 to rotate via second push rod 24. Adjusting rod 18 simultaneously drives first slider 15 to move within waist-shaped groove 8, and second slider 16 to move within first slide groove 17. This simultaneously changes the effective length of waist-shaped groove 8 and the distance between the two limiting grooves 10, thereby achieving precise adjustment of the travel of sliding seat 2. After adjustment, release knob 35. Second push rod 24 automatically resets under the action of second elastic element 25, and sealing block 27 moves away accordingly (see reference). Figure 12At this point, by simply adjusting the adjusting rod 18, the first elastic element 22 will drive the locking block 23 to insert into the locking groove 19 via the first push rod 21, thereby achieving automatic locking and firmly fixing the adjustment state.

[0068] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sliding hinge, characterized in that: It includes a fixed seat (1), a sliding seat (2) and a rotating seat (3). The fixed seat (1) is fixedly connected to the door frame (5), and the rotating seat (3) is fixedly connected to the door leaf (4). The fixed seat (1) has a sliding hole (6) inside. The sliding seat (2) is slidably disposed in the sliding hole (6). One end of the sliding seat (2) extends out of the fixed seat (1), and the rotating seat (3) is rotatably disposed at the end of the sliding seat (2) that extends out of the fixed seat (1). A fixing pin (7) is provided in the fixing seat (1). The fixing pin (7) is located in the sliding hole (6). A waist-shaped groove (8) is provided in the sliding seat (2) along its own sliding direction. The fixing pin (7) passes through the waist-shaped groove (8). An elastic pin (9) is provided in the fixing seat (1). Two limiting grooves (10) are provided on the side wall of the sliding seat (2). The end of the elastic pin (9) abuts against the side wall of the sliding seat (2). When one end of the waist-shaped groove (8) abuts against the fixing pin (7), the end of the elastic pin (9) is inserted into the limiting groove (10). The sliding seat (2) is located in the waist-shaped groove (8) on the side away from the rotating seat (3) and a first slider (15) is slidably disposed thereon. The first slider (15) moves to abut against the fixing pin (7). The sliding seat (2) is located in the waist-shaped groove (8) on the side away from the rotating seat (3) and a first sliding groove (17) is provided. A second slider (16) is slidably disposed in the first sliding groove (17). A limiting groove (10) on the side away from the waist-shaped groove (8) is provided on the second slider (16). An adjusting rod (18) is internally threaded at the end of the sliding seat (2) away from the rotating seat (3). The first slider (15) is rotatably disposed at the end of the adjusting rod (18), and the second slider (16) is rotatably disposed on the adjusting rod (18).

2. A sliding hinge according to claim 1, characterized in that: The sliding seat (2) has a rectangular cross-section, and the width of the sliding seat (2) is greater than its height.

3. A sliding hinge according to claim 2, characterized in that: The rotating seat (3) has two connecting arms (11) spaced apart at the end near the sliding seat (2). The two connecting arms (11) are located on the upper and lower sides of the sliding seat (2) and are rotatably connected to the end of the sliding seat (2).

4. A sliding hinge according to claim 1, characterized in that: The rotating base (3) has multiple first connecting holes (12).

5. A sliding hinge according to claim 1, characterized in that: The bottom of the fixing base (1) is provided with a fixing plate (14), and the fixing plate (14) has a plurality of second connecting holes (13).

6. A sliding hinge according to claim 1, characterized in that: Multiple locking grooves (19) are evenly spaced along the circumference of the outer wall of the adjusting rod (18). A mounting block (20) is provided on the end wall of the sliding seat (2) away from the rotating seat (3). A first push rod (21) is slidably mounted on the side of the mounting block (20) near the adjusting rod (18). A first elastic element (22) is provided inside the mounting block (20) to push the first push rod (21) towards the adjusting rod (18). A locking block (23) is fixedly mounted on the end of the first push rod (21) near the adjusting rod (18). The locking block (23) is slidably inserted into... Inside the lock groove (19), a second push rod (24) is slidably provided at the end of the adjusting rod (18) away from the first slider (15). A second elastic element (25) is provided inside the adjusting rod (18) for pushing the second push rod (24) to move away from the first slider (15). A push block (26) is fixedly provided on the second push rod (24). A sealing block (27) is slidably provided in each lock groove (19) of the adjusting rod (18) along its own radial direction. The push block (26) moves to abut against the sealing block (27) and causes the sealing block (27) to seal the lock groove (19).

7. A door assembly, characterized in that: The sliding hinge includes any one of claims 1-6, and also includes a door frame (5) and a door leaf (4), wherein the fixed seat (1) is fixedly disposed on the door frame (5), and the rotating seat (3) is fixedly disposed on the door leaf (4).

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