Simple box door hinge with door body capable of hovering
By designing a combination of hinges, pull rods, drive rods, and springs, the door can be stably suspended in any position, solving the problem of traditional hinges lacking a stop function and improving efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SHUNDE SHIXIN TECHNOLOGY CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional cabinet door hinges lack a stop function, which means that users need to rely on external support or manual assistance when taking or putting in items, making the operation cumbersome and reducing efficiency.
Design a door hinge that includes a hinge arm, a pull rod, a drive rod, and a spring. Utilize the dynamic balance mechanism between the spring's tension and the door's own weight to achieve the door's pause function at any position. The movement trajectory and angle are restricted by guide grooves and limit grooves.
It enables the door to be stably hovered in any position, simplifying operation, reducing user burden, and improving safety and efficiency. It is especially suitable for scenarios where the door angle needs to be frequently adjusted.
Smart Images
Figure CN224134458U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a box door hinge, specifically a simple box door hinge that allows the door to be suspended. Background Technology
[0002] Hinges primarily function to connect the cabinet body and the door, enabling the door to open and close. Traditional cabinet door hinges only have two working states: fully open and fully closed. They lack the ability to stop during opening and closing, failing to provide a stop-start function. For example, in kitchen cabinet use, users may need to hold the door at a specific angle to free their hands when retrieving or placing items. Because existing cabinet door hinges lack a stop-start function, users often need to use additional supports or manually hold the door to maintain its open position, which is cumbersome and reduces efficiency. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a simple door hinge that can be suspended, with a simple structure, low manufacturing cost, and door with stop-and-go and buffer positioning functions, thereby improving the user experience and enhancing safety.
[0004] The purpose of this utility model is achieved in the following way: a simple box door hinge that can be suspended, which includes a hinge arm, one end of which is connected to the back of the box door, and the other end of which is hinged to a mounting frame fixed in the box.
[0005] The bottom of the mounting frame has an open movable cavity, and the pull rod is slidably disposed in the movable cavity;
[0006] One end of the pull rod is hinged to the hinge arm, and the other end is hinged to the drive rod;
[0007] A guide groove is provided through the movable cavity, and the drive rod spans the movable cavity and is inserted into the guide groove;
[0008] A spring is also provided inside the movable cavity. One end of the spring is hooked onto the drive rod, and the other end is connected to the fixed rod riveted to the mounting frame. The spring generates tension, which pulls the hinge arm to rotate through the pull rod.
[0009] The inner end of the hinge arm protrudes to form a reinforcing boss, and correspondingly, the end face of the mounting frame is provided with a clearance groove, in which the reinforcing boss moves.
[0010] An inner hinge hole is provided through the hinge arm, and an outer hinge hole is provided through the outer end of the mounting frame. The hinge shaft passes through the outer hinge hole and the inner hinge hole in sequence to hinge the hinge arm onto the mounting frame.
[0011] The outer surface of the hinge shaft is provided with a plurality of anti-slip platforms, which are evenly distributed around the circumference and cooperate with the inner wall of the inner hinge hole to prevent the hinge shaft from rotating or sliding in the inner hinge hole.
[0012] The pull rod is provided with a limiting groove, and the inner wall of the movable cavity is provided with a limiting platform. The limiting platform cooperates with the limiting groove to limit the maximum opening angle of the hinge arm.
[0013] The guide groove is a waist-shaped groove that extends laterally.
[0014] The spring is a tension spring with hooks at both ends, which are respectively hooked onto the outer surfaces of the drive rod and the fixed rod.
[0015] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.
[0016] By utilizing the dynamic balance mechanism of the tension spring and the weight of the door, the door can be paused at any position, eliminating reliance on external auxiliary devices and significantly reducing the user's operational burden.
[0017] 3. Improves door reliability, especially suitable for scenarios requiring frequent door angle adjustments. The door can be automatically stopped with minimal force when opened or closed. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the open state of the hinge arm in this utility model.
[0019] Figure 2 This is a schematic diagram of the internal structure of the hinge arm in the open state of this utility model.
[0020] Figure 3 This is a schematic diagram of the closed state of the hinge arm in this utility model.
[0021] Figure 4 This is a schematic diagram of the bottom structure of the mounting frame in this utility model.
[0022] Figure 5 This is a schematic diagram of the structure of the pull rod and drive rod in this utility model.
[0023] Figure 6 This is a structural assembly drawing of the hinge in this utility model.
[0024] Figure 7 This is a schematic diagram of the tie rod in this utility model. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to the accompanying drawings. A simple box door hinge that allows the door to be suspended includes a hinge arm 1, one end of which is connected to the back of the box door, and the other end is hinged to a mounting frame 2 fixed in the box body.
[0026] The bottom of the mounting frame 2 has an open movable cavity 21, and the pull rod 3 is slidably disposed in the movable cavity 21;
[0027] One end of the pull rod 3 is hinged to the hinge arm 1, and the other end is hinged to the drive rod 4;
[0028] A guide groove 22 is provided through the movable cavity 21, and the drive rod 4 spans the movable cavity 21 and is inserted into the guide groove 22;
[0029] A spring is also provided in the movable cavity 21. One end of the spring is hooked onto the drive rod 4, and the other end is connected to the fixing rod 6 riveted to the mounting frame 2. The spring generates tension, which pulls the hinge arm 1 to rotate through the pull rod 3.
[0030] The inner end of the hinge arm 1 has a reinforcing boss 11 protruding out. Correspondingly, the end face of the mounting frame 2 has a clearance groove 23, and the reinforcing boss 11 moves in the clearance groove 23.
[0031] The hinge arm 1 has an inner hinge hole 12 through it, and the outer end of the mounting frame 2 has an outer hinge hole 24 through it. The hinge shaft 7 passes through the outer hinge hole 24 and the inner hinge hole 12 in sequence to hinge the hinge arm 1 onto the mounting frame 2.
[0032] The outer surface of the hinge shaft 7 is provided with a plurality of anti-slip platforms 71, which are evenly distributed in a circle and cooperate with the inner wall of the inner hinge hole 12 to prevent the hinge shaft 7 from rotating or sliding in the inner hinge hole 12.
[0033] The pull rod 3 is provided with a limiting groove 31, and the inner wall of the movable cavity 21 is provided with a limiting platform 25. The limiting platform 25 cooperates with the limiting groove 31 to limit the maximum opening angle of the hinge arm 1.
[0034] The guide groove 22 is a waist-shaped groove that extends laterally.
[0035] The spring is a tension spring 5, with hooks 51 at both ends, which are respectively hooked onto the outer surfaces of the drive rod 4 and the fixed rod 6.
[0036] Working principle: In this case, one end of the hinge arm is connected to the back of the box door, while the other end is hinged to the mounting frame fixed in the box body. The box door can be opened and closed through the hinge arm.
[0037] The mounting frame has a movable cavity at its bottom opening, and a pull rod is slidably connected within this cavity. The other end of the hinge arm is hinged to one end of the pull rod. Simultaneously, a drive rod is also located within the movable cavity, and the other end of the pull rod is hinged to the drive rod, forming a linkage mechanism between the hinge arm and the drive rod.
[0038] During the opening and closing of the cabinet door, the door drives the hinge arm to rotate around the hinge point. The rotation of the hinge arm pulls the sliding rod, which can slide linearly within the movable cavity. To guide the sliding of the pulling rod, a laterally extending guide groove is provided through the movable cavity. The drive rod is inserted across the guide groove to guide the sliding trajectory of the pulling rod.
[0039] Furthermore, a spring is installed inside the movable cavity. This spring can be designed as a tension spring, with hooks at both ends that hook onto the drive rod and the fixed rod respectively. The hooks ensure that the tension spring is firmly connected and not easily detached. As the door opens, the tension spring generates different magnitudes of tension, which is constantly adjusted according to the opening angle of the door, eventually reaching a state of balance with the weight of the door. At this point, the hinge arm stops rotating, the net force on the door is zero, and the door can stay stably in any position without additional external support. When the door closes, the hinge arm retracts inward, the pull rod pushes the tension spring in the opposite direction, the tension of the spring gradually decreases, and the door closes smoothly under the action of gravity.
[0040] Furthermore, the interaction between the tension spring and the guide groove ensures that when the pull rod drives the drive rod to slide along the guide groove, the shape of the waist-shaped groove not only restricts the movement trajectory of the drive rod and pull rod, allowing them to change in position and angle, but also ensures that the direction and magnitude of the tension force generated by the tension spring are always balanced with the torque of the door's own weight. This further ensures that the door can be stably suspended at any angle, precisely adjusting the tension spring force and improving the stability of the door when it stops. The shape of the waist-shaped groove can also be adjusted according to actual needs to adapt to the installation of doors of different weights or sizes, making it highly versatile.
[0041] By utilizing the dynamic balance mechanism of the tension spring and the weight of the cabinet door, the tension is adjusted by extending the spring with a pull rod and allowing the drive rod to slide in a guide groove. This ingeniously achieves the function of pausing the cabinet door at any position, eliminating reliance on external auxiliary devices, simplifying the structure, and improving reliability. It is particularly suitable for scenarios requiring frequent adjustments to the door angle. Users only need to apply a small amount of force when opening or closing the door to achieve the door's automatic stopping function, significantly reducing the user's operational burden and preventing the door from falling uncontrollably, thus improving operational safety and comfort.
[0042] A reinforcing boss protrudes from the inner end of the hinge arm. Corresponding to this reinforcing boss, a clearance groove is formed on the end face of the mounting frame. During the opening and closing of the door, the hinge arm rotates, and the reinforcing boss moves synchronously within the clearance groove. The two work together to enhance the stability of the hinge. The reinforcing boss increases the load-bearing area and structural strength of the hinge arm, improves its deformation capacity, and extends the service life of the hinge. The clearance groove provides space for the movement of the reinforcing boss, limiting its range of motion, thereby indirectly limiting the rotation angle of the hinge arm. This effectively prevents excessive rotation of the hinge arm and protects the overall structure of the hinge and the housing from damage.
[0043] To further limit the opening angle of the hinge arm, a limiting groove is provided on the pull rod, and a limiting platform is provided on the inner wall of the movable cavity. During the opening of the door, the limiting groove gradually approaches the limiting platform until the limiting platform is fully embedded in the limiting groove. At this point, the door reaches its maximum opening angle, preventing the pull rod from continuing to move, thus achieving the purpose of limiting the hinge arm. Limiting the maximum opening angle of the hinge arm ensures that the door will not exceed the preset maximum angle, avoiding damage to the hinge or the door body caused by excessive opening, and enhancing the safety of the door's use. Therefore, this method can be widely adopted.
[0044] When installing the hinge arm, an inner hinge hole is provided at the hinge arm end, and an outer hinge hole is provided at the mounting frame end. A hinge shaft passes through the outer hinge hole and connects to the inner hinge hole sequentially, thus hinged the hinge arm to the mounting frame. The door can rotate along this hinge shaft, realizing the opening and closing function of the door. The structure is simple and the manufacturing cost is low. Furthermore, several anti-slip surfaces are provided on the outer surface of the hinge shaft. The anti-slip surfaces mate with the inner wall of the inner hinge hole, and the tight connection between the anti-slip surfaces and the inner wall increases the friction between the two, effectively preventing the hinge shaft from rotating or sliding within the shaft hole. This ensures the stability of the hinge shaft during long-term use and improves the long-term stability of the hinge, thus allowing for widespread use.
[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A simple box door hinge that allows the door to be suspended, comprising a hinge arm (1), one end of which is connected to the back of the box door, and the other end of which is hinged to a mounting frame (2) fixed in the box body, characterized in that: The mounting frame (2) has an open movable cavity (21) at the bottom, and the pull rod (3) is slidably disposed in the movable cavity (21); One end of the pull rod (3) is hinged to the hinge arm (1), and the other end is hinged to the drive rod (4); A guide groove (22) is provided through the movable cavity (21), and the drive rod (4) spans the movable cavity (21) and is inserted into the guide groove (22); A spring is also provided in the movable cavity (21). One end of the spring is hooked onto the drive rod (4), and the other end is connected to the fixing rod (6) riveted to the mounting frame (2). The spring generates tension, which pulls the hinge arm (1) to rotate through the pull rod (3).
2. The simple box door hinge with door hovering function according to claim 1, characterized in that: The inner end of the hinge arm (1) is formed with a reinforcing boss (11), and correspondingly, the end face of the mounting frame (2) is provided with a clearance groove (23), and the reinforcing boss (11) moves in the clearance groove (23).
3. The simple box door hinge with door hovering function according to claim 1, characterized in that: The hinge arm (1) has an inner hinge hole (12) through it, and the outer end of the mounting frame (2) has an outer hinge hole (24) through it. The hinge shaft (7) passes through the outer hinge hole (24) and the inner hinge hole (12) in sequence to hinge the hinge arm (1) onto the mounting frame (2).
4. A simple box door hinge that allows the door to be suspended, as described in claim 3, characterized in that: The outer surface of the hinge shaft (7) is provided with a plurality of anti-slip platforms (71). The anti-slip platforms (71) are evenly distributed around the circumference and cooperate with the inner wall of the inner hinge hole (12) to prevent the hinge shaft (7) from rotating or sliding in the inner hinge hole (12).
5. The simple box door hinge with door hovering function according to claim 1, characterized in that: The pull rod (3) is provided with a limiting groove (31), and the inner wall of the movable cavity (21) is provided with a limiting platform (25). The limiting platform (25) cooperates with the limiting groove (31) to limit the maximum opening angle of the hinge arm (1).
6. The simple box door hinge with door hovering function according to claim 1, characterized in that: The guide groove (22) is a waist-shaped groove that extends laterally.
7. The simple box door hinge with door hovering function according to claim 1, characterized in that: The spring is a tension spring (5), with hooks (51) at both ends. The hooks (51) are respectively hooked onto the outer surfaces of the drive rod (4) and the fixed rod (6).