Hinge structure for a door

Abstract

The utility model discloses a door is with hinge leaf structure belongs to the technical field of twisted leaf, including lower hinged base, the front end of lower hinged base is fixedly connected with fixed plate no.

Description

Technical Field

[0001] This utility model belongs to the field of hinge technology, specifically relating to a hinge structure for doors. Background Technology

[0002] A hinge is a mechanical component used to connect a door to a door frame and enable the door to rotate. It is usually made up of two or more metal blades hinged together by a pin or shaft. One blade is fixed to the door frame, and the other is fixed to the edge of the door. The door can open and close freely around the pivot of the pin.

[0003] The working principle of the hinge is based on the mechanical characteristics of the hinge structure. It connects at least two blades through a pin. One blade is fixed to the support body, and the other is fixed to the moving component. With the pin as the axis of rotation, the moving component can rotate freely around the axis. During operation, the support body bears the weight of the moving component through the fixed blades, while the pin allows the two blades to rotate relative to each other. At the same time, the rigid structure of the blades transmits the pushing and pulling forces when opening and closing the door, ensuring that the moving component can rotate flexibly while maintaining the connection. Its principle is similar to the rotation of a lever around a fulcrum, which has the dual functions of supporting the load and providing freedom of movement.

[0004] However, existing hinge structures cannot limit the opening angle of doors and windows when they are opened; therefore, in actual use, doors and windows often swing freely due to external forces or gravity after opening, which can easily hit the wall and cause paint wear, and may also cause safety hazards. Utility Model Content

[0005] The purpose of this invention is to provide a door hinge structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a door hinge structure, including a lower hinge seat, with fixed plates fixedly connected to the front end of the lower hinge seat in a vertically parallel arrangement, a lower hinge shaft disposed inside the two fixed plates, a hinge plate sleeved on the side surface of the lower hinge shaft, a door leaf hinge seat connected to the end of the hinge plate away from the lower hinge shaft via a pin, a load-bearing arm disposed above the door leaf hinge seat, ratchet teeth disposed on the side surface of the hinge plate, a support block fixedly connected between the two fixed plates and at the front end of the lower hinge seat, a torsion spring fixedly installed at the front end of the support block, a pawl fixedly connected to the end of the torsion spring away from the support block, the pawl engaging with the ratchet teeth.

[0007] In a preferred embodiment, the bottom of the load-bearing arm is provided with a load-bearing assembly for connecting the lower hinge shaft. The load-bearing assembly includes a cage, steel balls, a load-bearing slide plate, a connecting hole three, and a bearing two. The cage is fixedly connected to the bottom of the load-bearing arm, and the steel balls are arranged in a rectangular array inside the cage.

[0008] In a preferred embodiment, the bottom of the cage is rotatably connected to a load-bearing slide plate, the third connecting hole is opened at the bottom of the load-bearing slide plate, the second bearing is fixedly connected to the bottom of the load-bearing slide plate and fixedly sleeved on the top of the lower hinge shaft, and the top of the load-bearing slide plate makes rolling contact with the side surface of the steel ball.

[0009] In a preferred embodiment, the hinge plate has a shaped groove at one end near the door hinge seat, a connecting hole is formed inside the hinge plate, and an installation hole is formed outside the connecting hole and inside the hinge plate. A bearing is fixedly sleeved inside the installation hole, and a dust cover is snapped onto the top of the bearing. The hinge plate is rotatably connected to the side surface of the lower hinge shaft through the bearing.

[0010] In a preferred embodiment, the door hinge base is fixedly connected to a second fixing plate in a parallel arrangement on one side near the hinge plate, and an irregularly shaped block is fixedly connected between the two second fixing plates. The second fixing plate has a second connecting hole inside.

[0011] In a preferred embodiment, a washer is provided on the top of the lower fixing plate, the washer is sleeved on the side surface of the lower hinge shaft and located directly below the bearing, and the axial cross section of the lower hinge shaft is T-shaped.

[0012] In a preferred embodiment, the top end of the lower hinge shaft passes through the bearing two and the connecting hole three in sequence, forming an axial limiting structure.

[0013] In a preferred embodiment, the irregular groove is adapted to the shape of the irregular block, and the second connecting hole is perpendicular to the first connecting hole on the axis.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes a door hinge seat to drive a hinge plate to rotate on the side surface of the lower hinge shaft. During the rotation of the hinge plate, the pawl engages with the ratchet, causing the pawl to continuously engage inside the ratchet, thus limiting the hinge plate's position. Consequently, the opening and closing angle of the door is restricted, facilitating the adjustment of the door's opening and closing angle by the operator and limiting the door's movement. This prevents the door from swinging back and forth when open, effectively improving the stability and safety of the door's operation.

[0016] This invention, through the setting of load-bearing components, can convert the weight of the door leaf from the vertical direction to the axial transmission along the lower hinge shaft, significantly improving the load-bearing capacity and stability of the door hinge structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall two-dimensional structure of this utility model;

[0019] Figure 3 This is a three-dimensional exploded view of a partial component of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the hinge plate component of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the load-bearing arm component of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the lower hinge seat component of this utility model.

[0023] In the diagram: 1. Lower hinge seat; 2. Lower hinge shaft; 3. Hinge plate; 4. Door leaf hinge seat; 5. Load-bearing arm; 6. Pin; 101. Fixing plate one; 102. Washer; 103. Support block; 104. Torsion spring; 105. Claw; 301. Irregular groove; 302. Connecting hole one; 303. Mounting hole; 304. Bearing one; 305. Dust cover; 306. Racket; 401. Fixing plate two; 402. Irregular block; 403. Connecting hole two; 501. Cage; 502. Steel ball; 503. Load-bearing sliding plate; 504. Connecting hole three; 505. Bearing two. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0026] Please see Figure 1-6This utility model provides a door hinge structure, including a lower hinge seat 1. The front end of the lower hinge seat 1 is fixedly connected to a fixing plate 101 arranged vertically and horizontally. The two fixing plates 101 are provided with a lower hinge shaft 2. The side surface of the lower hinge shaft 2 is sleeved with a hinge plate 3. The end of the hinge plate 3 away from the lower hinge shaft 2 is connected to a door leaf hinge seat 4 through a pin 6. A load-bearing arm 5 is provided above the door leaf hinge seat 4. The side surface of the hinge plate 3 is provided with a ratchet 306. A support block 103 is fixedly connected between the two fixing plates 101 and at the front end of the lower hinge seat 1. A torsion spring 104 is fixedly installed at the front end of the support block 103. A pawl 105 is fixedly connected to the end of the torsion spring 104 away from the support block 103. The pawl 105 engages with the ratchet 306. The lower hinge seat 1, lower hinge shaft 2, hinge plate 3, and door leaf hinge seat 4 constitute a hinge structure. The lower hinge seat 1 serves as a supporting foundation, providing a reliable fulcrum for the rotation of subsequent components such as the hinge plate 3, thus enhancing the stability of the structure. The door leaf hinge seat 4 is used to connect the door leaf. The lower hinge shaft 2 and hinge plate 3 provide support for the rotation of the door leaf hinge seat 4. The torsion spring 104 provides a stable support force for the pawl 105, allowing the pawl 105 to stably engage inside the ratchet 306 during rotation, limiting the rotation angle of the hinge plate 3. When a user opens the door leaf, the door leaf will... The hinge seat 4 drives the hinge plate 3 to rotate on the side surface of the lower hinge shaft 2. During the rotation of the hinge plate 3, the pawl 105 engages with the ratchet 306. Therefore, the pawl 105 will continuously engage inside the ratchet 306 during the rotation of the hinge plate 3, thereby limiting the hinge plate 3. As a result of the limiting of the hinge plate 3, the opening and closing angle of the door is restricted. This not only facilitates the adjustment of the door opening and closing angle by the operator, but also limits the opening and closing of the door, thereby preventing the door from swinging back and forth when it is open, and effectively improving the stability and safety of the door opening and closing.

[0027] Specifically, such as Figure 1 and Figure 5 As shown, the bottom of the load-bearing arm 5 is equipped with a load-bearing assembly that connects to the lower hinge shaft 2. The load-bearing assembly includes a cage 501, steel balls 502, a load-bearing slide plate 503, a connecting hole 504, and a bearing 505. The cage 501 is fixedly connected to the bottom of the load-bearing arm 5, and the steel balls 502 are arranged in a rectangular array inside the cage 501. The load-bearing arm 5 is used to connect the door leaf and is located above the door leaf hinge seat 4. The rectangular array design of the cage 501 and steel balls 502 in the load-bearing assembly distributes the weight of the door leaf into multiple support points, which can significantly improve the load-bearing capacity compared with the traditional single-point load-bearing structure. The rolling friction coefficient of the steel balls 502 is much lower than that of sliding friction, which can reduce the resistance when the load-bearing arm 5 rotates, making the door leaf open and close more smoothly, while reducing component wear.

[0028] The bottom of the retainer 501 is rotatably connected to the load-bearing slide plate 503. The third connection hole 504 is opened at the bottom of the load-bearing slide plate 503. The second bearing 505 is fixedly connected to the bottom of the load-bearing slide plate 503 and fixedly sleeved on the top of the lower hinge shaft 2. The top of the load-bearing slide plate 503 is in rolling contact with the side surface of the steel ball 502.

[0029] The rotating connection design of the retainer 501 and the load-bearing slide plate 503 can adapt to the angle changes when the door leaf rotates, and avoid the steel ball 502 from getting stuck due to rigid contact. The fixed sleeve of the bearing 505 and the lower hinge shaft 2 ensures that the load-bearing slide plate 503 and the lower hinge shaft 2 rotate synchronously. The rolling contact between the steel ball 502 and the load-bearing slide plate 503 further converts the radial pressure into rolling friction, so that the load-bearing component maintains rotational flexibility while transmitting load, which is especially suitable for heavy door leaves.

[0030] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, a shaped groove 301 is provided at one end of the hinge plate 3 near the door hinge seat 4. A connecting hole 302 is provided inside the hinge plate 3. An installation hole 303 is provided outside the connecting hole 302 and inside the hinge plate 3. A bearing 304 is fixedly sleeved inside the installation hole 303. A dust cover 305 is snapped onto the top of the bearing 304. The hinge plate 3 is rotatably connected to the side surface of the lower hinge shaft 2 through the bearing 304. The bearing 304 converts the sliding friction between the hinge plate 3 and the lower hinge shaft 2 into rolling friction, greatly reducing rotational resistance and making the door easier to open and close. The dust cover 305 is snapped onto the top of the bearing 304, which can effectively prevent construction dust, moisture and other debris from entering the bearing, avoiding bearing corrosion or wear and extending the maintenance cycle of the hinge.

[0031] The door hinge base 4 is fixedly connected to a second fixing plate 401 in a parallel arrangement on one side near the hinge plate 3. A shaped block 402 is fixedly connected between the two fixing plates 401. A second connecting hole 403 is opened inside the fixing plate 401.

[0032] The irregular block 402 can position the connection between the door hinge seat 4 and the hinge plate 3, so that the second connection hole 403 and the first connection hole 302 can be connected, which facilitates the installation by the staff.

[0033] Specifically, such as Figure 1 and Figure 2As shown, a washer 102 is provided on the top of the lower fixing plate 101. The washer 102 is sleeved on the side surface of the lower hinge shaft 2 and located directly below the bearing 304. The axial cross-section of the lower hinge shaft 2 is T-shaped. The washer 102 is sleeved on the lower hinge shaft 2 and located below the bearing 304. The thickness of the washer 102 can be adjusted to compensate for the machining error of the component, ensuring that the gap between the bearing 304 and the fixing plate 101 is uniform and avoiding axial movement when the hinge plate 3 rotates. The T-shaped axial cross-section design of the lower hinge shaft 2 forms a stepped limit with the bottom of the fixing plate 101, preventing the lower hinge shaft 2 from falling out of the fixing plate 101 and enhancing the structural reliability.

[0034] The top end of the lower hinge shaft 2 passes through the bearing 505 and the connecting hole 504 in sequence, forming an axial limiting structure. The axial limiting structure formed by the bearing 505 and the connecting hole 504 at the top end of the lower hinge shaft 2 can prevent the load-bearing arm 5 and the load-bearing slide plate 503 from moving axially along the lower hinge shaft 2, and avoid door sagging or abnormal noise caused by loose parts.

[0035] Specifically, such as Figure 3 and Figure 4 As shown, the irregular groove 301 and the irregular block 402 are matched in shape, and the second connecting hole 403 is perpendicular to the first connecting hole 302. The perpendicular distribution of the axes of the second connecting hole 403 and the first connecting hole 302 makes the connection direction of the pin 6 perpendicular to the rotation axis of the lower hinge shaft 2, forming a stable cross hinge structure, ensuring a more reasonable force transmission path when the door rotates and avoiding stress concentration.

[0036] Working principle and usage process of this utility model:

[0037] During use, the hinge structure of this door allows the hinge plate 3 to rotate on the side surface of the lower hinge shaft 2 when the door is opened. As the hinge plate 3 rotates, the pawl 105, supported by the torsion spring 104, remains locked inside the ratchet 306, limiting its rotation. Therefore, when the door is opened to a certain angle, the angle of the hinge plate 3 is limited by the pawl 105 being locked inside the ratchet 306, thus limiting the opening angle of the door and preventing it from swinging back and forth after opening, effectively improving the stability of the door opening.

[0038] In terms of load-bearing capacity, the door hinge structure of this door first applies the weight of the door leaf to the hinge seat 4 and then transmits it downwards to the load-bearing arm 5. The retainer 501, which is fixedly connected to the bottom of the load-bearing arm 5, bears the weight, and the steel balls 502 arranged in a rectangular array inside the retainer evenly distribute the weight. The steel balls 502 transfer the weight to the load-bearing slide plate 503, which is rotatably connected to the bottom of the retainer 501, through rolling contact. The bearing 505, which is fixedly connected to the bottom of the load-bearing slide plate 503, is fixedly sleeved to the top of the lower hinge shaft 2, thereby transferring the weight along the lower hinge shaft 2 to the lower hinge seat 1. Through the load-bearing components, the weight of the door leaf is converted from the vertical direction to the axial transmission along the lower hinge shaft 2, which significantly improves the load-bearing capacity and stability of the door hinge structure.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hinged leaf structure for a door, comprising a lower hinge seat (1), characterized in that: The front end of the lower hinge seat (1) is fixedly connected to a fixed plate (101) arranged in parallel. The two fixed plates (101) are provided with a lower hinge shaft (2). The side surface of the lower hinge shaft (2) is sleeved with a hinge plate (3). The end of the hinge plate (3) away from the lower hinge shaft (2) is connected to a door hinge seat (4) through a pin (6). A load-bearing arm (5) is provided above the door hinge seat (4). The side surface of the hinge plate (3) is provided with a ratchet (306). A support block (103) is fixedly connected between the two fixed plates (101) and at the front end of the lower hinge seat (1). A torsion spring (104) is fixedly installed at the front end of the support block (103). A pawl (105) is fixedly connected at the end of the torsion spring (104) away from the support block (103). The pawl (105) meshes with the ratchet (306).

2. A hinged leaf structure for a door according to claim 1, characterized in that: The bottom of the load-bearing arm (5) is provided with a load-bearing component that connects to the lower hinge shaft (2). The load-bearing component includes a retainer (501), steel balls (502), a load-bearing slide plate (503), a third connecting hole (504), and a second bearing (505). The retainer (501) is fixedly connected to the bottom of the load-bearing arm (5), and the steel balls (502) are arranged in a rectangular array inside the retainer (501).

3. A hinged leaf construction for a door according to claim 2, characterized in that: The bottom of the retainer (501) is rotatably connected to the load-bearing slide plate (503), the third connection hole (504) is opened at the bottom of the load-bearing slide plate (503), the second bearing (505) is fixedly connected to the bottom of the load-bearing slide plate (503) and fixedly sleeved on the top of the lower hinge shaft (2), and the top of the load-bearing slide plate (503) is in rolling contact with the side surface of the steel ball (502).

4. A hinged leaf structure for a door according to claim 1, characterized in that: The hinge plate (3) has a groove (301) at one end near the door hinge seat (4). The hinge plate (3) has a connecting hole (302) inside. The connecting hole (302) has an installation hole (303) on the outside of the hinge plate (3) and inside the hinge plate (3). The installation hole (303) has a bearing (304) fixedly sleeved inside. The top of the bearing (304) is fitted with a dust cover (305). The hinge plate (3) is rotatably connected to the side surface of the lower hinge shaft (2) through the bearing (304).

5. A hinged leaf construction for a door according to claim 4, characterized in that: The door hinge seat (4) is fixedly connected to a second fixing plate (401) in a parallel arrangement on one side near the hinge plate (3). A shaped block (402) is fixedly connected between the two second fixing plates (401). A second connecting hole (403) is provided inside the second fixing plate (401).

6. A hinged leaf structure for a door according to claim 1, characterized in that: A washer (102) is provided on the top of the lower fixing plate (101). The washer (102) is sleeved on the side surface of the lower hinge shaft (2) and located directly below the bearing (304). The axial section of the lower hinge shaft (2) is T-shaped.

7. A hinged leaf structure for a door according to claim 1, wherein: The top end of the lower hinge shaft (2) passes through the bearing two (505) and the connecting hole three (504) in sequence, forming an axial limiting structure.

8. A hinged leaf structure for a door according to claim 5, wherein: The special-shaped slot (301) is matched with the shape of the special-shaped block (402), and the connecting hole two (403) and the connecting hole one (302) are distributed in an axis vertical manner.

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