A hinge structure for a door frame

Abstract

This utility model discloses a hinge structure for a door frame, including a first leaf plate and a second leaf plate. The top and bottom of the first leaf plate near the second leaf plate are fixed with a fixing cylinder. A rotating cylinder is disposed between the two fixing cylinders. A shaft passes through the rotating cylinder and the two fixing cylinders, and an end cap is fixed to the top of the shaft. Multiple hemispherical grooves are formed on the lower surface of the rotating cylinder, and a ball bearing is disposed inside each groove. The bottom end of the ball bearing is in contact with the upper surface of the bottom fixing cylinder. In this utility model, a first leaf plate, a second leaf plate, two fixing cylinders, a rotating cylinder, a shaft, a ball bearing, an end plate, a sliding sleeve, and a guide plate are provided. The first and second leaf plates are connected to the door frame and the door respectively by bolts. The second leaf plate rotates by the rotating cylinder rotating on the surface of the shaft. During this process, the ball bearing supports the rotating cylinder, thereby reducing wear on the bottom of the rotating cylinder and achieving a better noise reduction effect.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and more particularly to a hinge structure for a door frame. Background Technology

[0002] A hinge, also known as a hinge, is a mechanical device used to connect two objects and allow relative rotation between them. In the shower enclosure industry, hinges are a core hardware component, used to flexibly and stably install and fix heavy glass doors to metal door frames, enabling smooth opening and closing of the door. Existing technology typically includes a base connected to the door frame, a clamping arm connected to the glass door, and a pivot structure connecting the two. Its design must balance load-bearing strength, corrosion resistance, and adjustability to meet the durability and sealing requirements of daily use.

[0003] However, existing hinges for shower room door frames have the following drawbacks: Shower room door frames are typically connected to glass doors, which are generally quite heavy. With prolonged use, the rotating part of the hinge experiences severe wear at the bottom due to the weight of the glass door, leading to noise. Secondly, the gap between the two hinge plates cannot be adjusted, preventing flexible installation during actual setup. Therefore, further improvements are needed. To address this, we have proposed a new hinge structure for door frames. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hinge structure for a door frame.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hinge structure for a door frame, comprising a first leaf plate and a second leaf plate, wherein a fixing cylinder is fixed at the top and bottom of the first leaf plate near the second leaf plate, and a rotating cylinder is provided between the two fixing cylinders. A shaft is provided inside the rotating cylinder and the two fixing cylinders, and an end cap is fixed at the top of the shaft. A plurality of hemispherical grooves are formed on the lower surface of the rotating cylinder, and a ball is provided inside each groove. The bottom end of the ball is in contact with the upper surface of the bottom fixing cylinder. A guide plate is fixed to the outer wall of the rotating cylinder, and a sliding sleeve is slidably connected to the surface of the guide plate. The sliding sleeve is fixedly connected to the second leaf plate.

[0006] Furthermore, mounting holes are provided on both the first and second page plates.

[0007] Furthermore, the bottom end surface of the shaft is provided with an external thread, and a nut is rotatably connected to the external thread surface through the thread.

[0008] Furthermore, the bottom of the rotating drum is provided with an annular end plate, and a reserved hole is opened on the end plate near the ball, and the bottom of the ball passes through the reserved hole. The inner diameter of the reserved hole is smaller than the diameter of the ball. Screw holes are opened on both sides of the end plate, and a threaded groove corresponding to the screw hole is opened on the bottom of the rotating drum. The threaded groove and the corresponding screw hole are rotatably connected to a long bolt.

[0009] Furthermore, a locking bolt is threadedly connected to the side of the sliding sleeve away from the second page plate, and one end of the locking bolt inside the sliding sleeve is in contact with the surface of the guide plate.

[0010] Furthermore, a stop block is fixed to the surface of the guide plate at the end away from the rotating drum.

[0011] The beneficial effects of this utility model are:

[0012] 1. In use, this utility model includes a first page plate, a second page plate, two fixed cylinders, a rotating cylinder, a shaft, ball bearings, an end plate, a sliding sleeve, and a guide plate. The first page plate and the second page plate are connected to the door frame and the door respectively by bolts. The second page plate rotates by the rotating cylinder rotating on the surface of the shaft. During this process, the ball bearings support the rotating cylinder, thereby reducing the wear at the bottom of the rotating cylinder and achieving a better noise reduction effect.

[0013] 2. In use, this utility model is provided with a first page plate, a second page plate, a sliding sleeve, and a guide plate. The second page plate can slide along the surface of the guide plate through the sliding sleeve to adjust the distance between the first page plate and the second page plate. Thus, during actual installation, it can be adjusted according to the actual distance between the door frame and the door, making the installation more flexible and convenient. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a partial cross-sectional view of the present invention;

[0017] Figure 3 This is a perspective view of the end plate of this utility model;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0019] The attached figures are labeled as follows:

[0020] 1. First page plate; 2. Second page plate; 3. Fixed cylinder; 4. Rotating cylinder; 41. Ball groove; 42. Threaded groove; 5. Shaft; 6. Nut; 7. Sliding sleeve; 8. Guide plate; 9. Locking bolt; 10. Stop block; 11. Ball bearing; 12. End plate; 121. Reserved hole; 122. Screw hole; 13. Long bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-4 As shown, a hinge structure for a door frame is disclosed, comprising a first leaf plate 1 and a second leaf plate 2. A fixing cylinder 3 is fixed to the top and bottom of the first leaf plate 1 near the second leaf plate 2. A rotating cylinder 4 is disposed between the two fixing cylinders 3. A shaft 5 passes through the rotating cylinder 4 and the two fixing cylinders 3, and an end cap is fixed to the top of the shaft 5. Multiple hemispherical grooves 41 are formed on the lower surface of the rotating cylinder 4. A ball bearing 11 is disposed inside each groove 41, and the bottom end of the ball bearing 11 is in contact with the upper surface of the bottom fixing cylinder 3. A guide plate 8 is fixed to the outer wall of the rotating cylinder 4, and a sliding sleeve 7 is slidably connected to the surface of the guide plate 8. The sliding sleeve 7 is fixedly connected to the second leaf plate 2.

[0023] Mounting holes are provided on both the first page 1 and the second page 2.

[0024] The first page 1 and the second page 2 have at least two mounting holes, and their installation method is the same as the existing hinge installation method.

[0025] The bottom surface of the shaft 5 is provided with an external thread, and the external thread surface is connected to the nut 6 by the thread rotation.

[0026] The top cap of the shaft 5 is a hexagonal nut. When assembling this hinge structure, place the rotating cylinder 4 between the two fixed cylinders 3, then pass the shaft 5 through the fixed cylinders 3 and the rotating cylinder 4 from the top in sequence, and finally screw the nut 6 on the bottom surface of the shaft 5. This also allows for the disassembly of the various components of the hinge structure.

[0027] The bottom of the rotating drum 4 is provided with an annular end plate 12. The end plate 12 has a reserved hole 121 near the ball 11, and the bottom of the ball 11 passes through the reserved hole 121. The inner diameter of the reserved hole 121 is smaller than the diameter of the ball 11. The end plate 12 has screw holes 122 on both sides. The bottom of the rotating drum 4 has a threaded groove 42 corresponding to the screw hole 122. The threaded groove 42 and the corresponding screw hole 122 are rotatably connected to a long bolt 13.

[0028] Once the ball bearing 11 is inside the ball groove 41, the end plate 12 is attached to the bottom of the rotating drum 4, so that the bottom of the ball bearing 11 passes through the pre-drilled hole 121. The end plate 12 then confines the ball bearing 11 within the ball groove 41. Next, the long bolt 13 is screwed into the corresponding screw hole 122 and threaded groove 42 to fix the end plate 12. The end plate 12 is also removable for easy replacement of the ball bearing 11. In this embodiment, the ball bearing 11 is a steel ball.

[0029] The sliding sleeve 7 is connected to the side away from the second page plate 2 by a locking bolt 9 through a threaded rotation. The end of the locking bolt 9 located inside the sliding sleeve 7 is in contact with the surface of the guide plate 8.

[0030] The second page plate 2 can be moved along the surface of the guide plate 8 via the sliding sleeve 7, thereby adjusting the distance between the second page plate 2 and the first page plate 1. Then, tighten the locking bolt 9 to press and fix the surface of the guide plate 8.

[0031] A stop 10 is fixed to the surface of the guide plate 8 away from the rotating drum 4. The stop 10 prevents the sliding sleeve 7 from disengaging from the guide plate 8 when it moves along the surface of the guide plate 8.

[0032] Working principle: During assembly, the rotating cylinder 4 is placed between two fixed cylinders 3. The shaft 5 is then passed through the fixed cylinders 3 and the rotating cylinder 4 from the top. Finally, a nut 6 is screwed onto the bottom surface of the shaft 5. During hinge installation, the first leaf plate 1 and the second leaf plate 2 are bolted to the door frame and door respectively. The weight of the door acts on the second leaf plate 2, and the downward force of the second leaf plate 2 acts on the rotating cylinder 4, supported by ball bearings 11. When the door rotates the second leaf plate 2, the second leaf plate 2 drives the rotating cylinder 4 to rotate on the surface of the shaft 5. The ball bearings 11 reduce friction, thus reducing wear. The components of this hinge structure can be flexibly disassembled, facilitating easy replacement of damaged parts.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hinge structure for a door frame, comprising a first leaf plate (1) and a second leaf plate (2), characterized in that: The first page plate (1) is fixed with a fixed cylinder (3) at the top and bottom of the end near the second page plate (2). A rotating cylinder (4) is provided between the two fixed cylinders (3). A shaft (5) is provided inside the rotating cylinder (4) and the two fixed cylinders (3). An end cap is fixed at the top of the shaft (5). A plurality of hemispherical ball grooves (41) are opened on the lower surface of the rotating cylinder (4). A ball (11) is provided inside each ball groove (41). The bottom end of the ball (11) is in contact with the upper surface of the bottom fixed cylinder (3). A guide plate (8) is fixed on the outer wall of the rotating cylinder (4). A sliding sleeve (7) is slidably connected to the surface of the guide plate (8). The sliding sleeve (7) is fixedly connected to the second page plate (2).

2. The hinge structure of a door frame according to claim 1, characterized in that: Mounting holes are provided on both the first page plate (1) and the second page plate (2).

3. The hinge structure of a door frame according to claim 1, characterized in that: The bottom surface of the shaft (5) is provided with an external thread, and a nut (6) is connected to the external thread surface by the thread rotation.

4. The hinge structure of a door frame according to claim 1, characterized in that: The bottom of the rotating drum (4) is provided with an annular end plate (12). The end plate (12) has a reserved hole (121) near the ball (11), and the bottom of the ball (11) passes through the reserved hole (121). The inner diameter of the reserved hole (121) is smaller than the diameter of the ball (11). The end plate (12) has screw holes (122) on both sides. The bottom of the rotating drum (4) has a threaded groove (42) corresponding to the screw hole (122). The threaded groove (42) and the corresponding screw hole (122) are rotatably connected to a long bolt (13).

5. The hinge structure of a door frame according to claim 1, characterized in that: The sliding sleeve (7) is connected to the side away from the second page plate (2) by a locking bolt (9) through a threaded rotation. One end of the locking bolt (9) inside the sliding sleeve (7) is in contact with the surface of the guide plate (8).

6. The hinge structure of a door frame according to claim 1, characterized in that: A stop (10) is fixed to the surface of the guide plate (8) away from the rotating drum (4).

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