Box door hinge with lifting function

Abstract

The utility model discloses a box door hinge with a lifting function. The box door hinge comprises a main body mounted on a box door and a base fixed on a box body, a first connecting rod and a second connecting rod are hinged to the body, the other end of the first connecting rod and the other end of the second connecting rod are hinged to the connecting base, the body, the first connecting rod, the second connecting rod and the connecting base are hinged to form a four-connecting-rod structure, the connecting base is connected with the base, and the first connecting rod and the second connecting rod swing relative to the body and the connecting base. And opening and closing of the box door are realized. The utility model has the beneficial effects that through the ingenious design of the four-connecting-rod structure, the automatic lifting function of the box door is realized in the opening process of the box door. By means of the design, the box door does not only rotate along a fixed axis when opened, but can be lifted upwards while rotating, and therefore direct friction between the bottom of the box door and a table top or the ground is avoided.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to a box door hinge with a lifting function. Background Art

[0002] The box door hinge is an important component widely used in various box equipment. Its main function is to form a flexible connection between the box door and the box body to ensure that the box door can be smoothly opened and closed. In the prior art, the design of the box door hinge mostly focuses on a single rotation function, that is, the box door rotates along the hinge axis when it is opened through a simple hinge structure. However, with the improvement of the market's requirements for the appearance of box equipment and the continuous optimization of the use experience, the existing box door hinge design gradually exposes some problems that cannot be ignored.

[0003] At present, the common box door hinge design has the following problems:

[0004] 1. In the traditional box door hinge, a certain space usually needs to be reserved at the bottom of the box door to ensure that there is enough space for the bottom of the box door to move when it is opened. However, this design results in a large gap between the bottom of the box door and the box body when the box door is in the closed state, directly affecting the overall aesthetics of the box equipment. Especially in applications with high appearance requirements such as high-end household appliances, precision instruments or furniture, this large gap is particularly prominent and cannot meet the market's requirements for the refinement of product appearance.

[0005] 2. On the other hand, if an attempt is made to reduce the gap at the bottom of the box door to improve the overall appearance, when the box door is opened, the phenomenon of friction between the bottom of the box door and the tabletop is likely to occur. This friction not only makes it difficult to smoothly open the box door, affecting the user experience, but also may cause physical damage to the box door or the tabletop, such as scratches or abrasions, thereby affecting the service life of the product. Therefore, it is necessary to make further improvements to it. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the existing technology and provide a box door hinge with a lifting function that has a simple structure, is easy to use, and can reduce the bottom gap when the box door is closed on the premise of ensuring the smooth opening of the box door.

[0007] The purpose of the utility model is realized in the following way: A box door hinge with a lifting function includes a main body installed on the box door and a base fixed on the box body; a first connecting rod and a second connecting rod are hingedly installed on the main body, and the other ends of the first connecting rod and the second connecting rod are hinged to a connecting seat. The main body, the first connecting rod, the second connecting rod and the connecting seat are hinged to form a four-bar linkage structure. The connecting seat is connected to the base, and the first connecting rod and the second connecting rod swing relative to the main body and the connecting seat to realize the opening and closing of the box door.

[0008] Further: The main body is arranged in an open groove shape, and the first connecting rod and the second connecting rod are hingedly installed in the open groove.

[0009] Further: A clearance area is arranged at the bottom of the open groove, and the first connecting rod and the second connecting rod pass through the clearance area and extend into the open groove to be hinged with the main body.

[0010] Further: The horizontal height of the hinge point between the first connecting rod and the main body is higher than that of the hinge point between the second connecting rod and the main body.

[0011] Further: The hinge point between the first connecting rod and the connecting seat is arranged in a left - right offset with the hinge point between the second connecting rod and the connecting seat.

[0012] Further: The first connecting rod is arranged in an open - groove shape with an open bottom, and the first connecting rod is clamped and hinged on the surface of the connecting seat.

[0013] Further: The connecting seat is arranged in an open - groove shape with an open bottom, and the connecting seat is clamped outside the second connecting rod and hinged with it.

[0014] Further: The main body, the first connecting rod, the second connecting rod and the connecting seat are integrally formed by stamping a metal plate.

[0015] The beneficial effects of the present utility model are as follows: 1. The structure is simple, the production cost is low, and the market competitiveness is improved.

[0016] 2. Through the ingenious design of the four - connecting - rod structure, during the opening process of the box door, the automatic lifting function of the box door is realized. This design enables the box door, when opening, not only to rotate along a fixed axis, but also to lift upwards while rotating, thus avoiding the direct friction between the bottom of the box door and the tabletop or the ground.

[0017] 3. Traditional box - door hinges usually need to reserve a large gap at the bottom of the box door to avoid friction, which to a certain extent affects the appearance of the box body. By introducing the lifting function, the present utility model enables the box door to maintain a very small gap with the lower edge of the box body when closed. This not only ensures that there is no friction when the box door is opened, but also greatly improves the overall aesthetic appearance of the box - body equipment visually, meeting the market demand for the refined appearance of high - end household appliances, furniture and other products.

[0018] 4. The four - connecting - rod structure adopted by the present utility model makes the opening and closing movement of the box door smoother and the structure more stable. Compared with traditional single - rotation hinges, the four - connecting - rod mechanism of the present utility model can disperse the stress generated during the movement process, improve the durability and service life of the hinge. In addition, the design of the four - connecting - rod mechanism can also ensure that the trajectory of the box door during opening and closing is more controllable, avoiding accidental collisions and jamming phenomena. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 and 2 is a schematic diagram of the overall assembly structure of the door hinge of the present utility model in the closed state.

[0020] Figure 3 and 4 is a schematic diagram of the door hinge of the present utility model in the closed state.

[0021] Figure 5 and 6 is a schematic diagram of the door hinge of the present utility model in the open state.

[0022] Figure 7 is an exploded view of the structure of the present utility model.

[0023] Figure 8 is an assembly drawing of the first link, the second link and the connecting seat in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further specifically describes the present utility model with reference to the accompanying drawings. A box door hinge with a lifting function includes a main body 1 installed on the box door and a base 2 fixed on the box body; a first link 3 and a second link 4 are hingedly installed on the main body 1, and the other ends of the first link 3 and the second link 4 are hinged to a connecting seat 5. The main body 1, the first link 3, the second link 4 and the connecting seat 5 are hinged to form a four-bar linkage structure. The connecting seat 5 is connected to the base 2, and the first link 3 and the second link 4 swing relative to the main body 1 and the connecting seat 5 to realize the opening and closing of the box door.

[0025] In one embodiment, the main body 1 is provided in an open groove shape, and the first link 3 and the second link 4 are hingedly installed in the open groove.

[0026] In one embodiment, a clearance area 6 is provided at the bottom of the open groove, and the first link 3 and the second link 4 pass through the clearance area 6 and extend into the open groove to be hinged to the main body 1.

[0027] In one embodiment, the horizontal height of the hinge point between the first link 3 and the main body 1 is higher than the hinge point between the second link 4 and the main body 1.

[0028] In one embodiment, the hinge point between the first link 3 and the connecting seat 5 is arranged in a left-right offset manner with the hinge point between the second link 4 and the connecting seat 5.

[0029] In one embodiment, the first link 3 is provided in an open groove shape with an open bottom end, and the first link 3 is clamped and hinged to the surface of the connecting seat 5 for hinging.

[0030] In one embodiment, the connecting seat 5 is arranged in an open slot shape with an open lower end, and the connecting seat 5 is clamped outside the second connecting rod 4 and hinged thereto.

[0031] In one embodiment, the main body 1, the first connecting rod 3, the second connecting rod 4 and the connecting seat 5 are integrally formed by stamping a metal plate.

[0032] Working principle: A door hinge with a lifting function involved in the present utility model enables the door to achieve smooth and unobstructed lifting and falling movements during the opening and closing processes through a carefully designed four-bar linkage structure. The specific working principle is as follows:

[0033] The door hinge of the present utility model is composed of main components such as a main body 1, a base 2, a first connecting rod 3, a second connecting rod 4, and a connecting seat 5. The main body 1 is fixedly installed on the door, and the base 2 is fixed on the box body. One end of the first connecting rod 3 and the second connecting rod 4 is respectively hinged to the main body 1, and the other end is hinged to the connecting seat 5, forming a complete four-bar linkage structure. The connecting seat 5 is fixedly connected to the base 2.

[0034] As Figure 4 shown, when the door is closed, the vertical distance between the connecting seat and the main body is L1. When the user pushes the door to open, the main body 1 drives the first connecting rod 3 and the second connecting rod 4 hinged thereto to start moving. Under the action of the four-bar linkage mechanism, the door not only rotates along the hinge axis, but also due to the movement coordination between the connecting rods, the door will simultaneously perform a certain upward lifting action. As Figure 6 shown, the vertical distance between the connecting seat and the main body is L2. It can be seen that L2 is significantly smaller than L1. The realization of this lifting function avoids the friction between the bottom of the door and the tabletop or the ground where the box body is placed when the door is opened.

[0035] During the closing process of the door, the four-bar linkage structure makes the door gradually fall back to the initial position while closing through reverse movement and closely fits with the box body. Thanks to the design of the four-bar linkage, the gap between the bottom of the door and the box body can be controlled to be very small in the closed state of the door, thereby effectively improving the overall aesthetics of the box body.

[0036] It should be noted that: The four-bar linkage structure in this case has high structural stability. During the opening and closing processes of the door, the movement trajectories of the four hinge points are jointly determined by the lengths of the connecting rods and the positions of the hinge points. This structural design can effectively disperse the stress in the opening and closing movements, avoid the wear and fatigue caused by stress concentration in traditional single-axis hinges, significantly extend the service life of the hinge, improve the load-bearing capacity of the hinge, and enable it to be adapted for use with heavy-duty doors.

[0037] Compared with the traditional technology, through the motion characteristics of the four-bar linkage structure in this case, the utility model can realize the automatic lifting function when the box door is opened, thus effectively avoiding the friction problem between the bottom of the box door and the tabletop or the ground. In addition, by introducing the lifting function, the utility model enables the box door to maintain a very small gap with the box body when it is closed. This design significantly improves the overall aesthetics of the box body. Especially in the applications of high-end household appliances, furniture, etc., it can better meet the high requirements of consumers for the appearance of products.

[0038] Furthermore: The four-bar linkage mechanism of the utility model is reasonably designed and has a stable structure, which can disperse stress during use, reduce the wear and fatigue of the hinge, and thus greatly extend the service life of the hinge. Compared with the traditional single-axis hinge structure, the design of the utility model has higher reliability and durability.

[0039] Due to the advantages of the lifting function and stable structure of the hinge of the utility model, it is applicable to various different types of box equipment, such as household appliances, furniture, and industrial equipment, etc. Its flexibility and versatility make this hinge have a wide application prospect in the market.

[0040] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A box door hinge with a lifting function, characterized in that: It includes a main body (1) installed on the cabinet door and a base (2) fixed on the cabinet body; a first connecting rod (3) and a second connecting rod (4) are hingedly installed on the main body (1), and the other ends of the first connecting rod (3) and the second connecting rod (4) are hinged to a connecting seat (5). The main body (1), the first connecting rod (3), the second connecting rod (4) and the connecting seat (5) are hinged to form a four-bar linkage structure. The connecting seat (5) is connected to the base (2), and the first connecting rod (3) and the second connecting rod (4) swing relative to the main body (1) and the connecting seat (5) to realize the opening and closing of the cabinet door.

2. The box door hinge with a lifting function according to claim 1, characterized in that: The main body (1) is arranged in an open slot shape, and the first connecting rod (3) and the second connecting rod (4) are hingedly installed in the open slot.

3. The box door hinge with a lifting function according to claim 2, characterized in that: A clearance area (6) is arranged at the bottom of the open slot, and the first connecting rod (3) and the second connecting rod (4) pass through the clearance area (6) and extend into the open slot to be hinged to the main body (1).

4. A box door hinge with a lifting function according to claim 1, characterized in that: The horizontal height of the hinge point between the first connecting rod (3) and the main body (1) is higher than the hinge point between the second connecting rod (4) and the main body (1).

5. A box door hinge with a lifting function according to claim 1, characterized in that: The hinge point between the first connecting rod (3) and the connecting seat (5) is arranged in a left-right offset with the hinge point between the second connecting rod (4) and the connecting seat (5).

6. The box door hinge with a lifting function according to claim 1, characterized in that: The first connecting rod (3) is arranged in an open slot shape with an open bottom end, and the first connecting rod (3) is clamped and hinged to the surface of the connecting seat (5).

7. A door hinge with a lifting function according to claim 1, characterized in that: The connecting seat (5) is arranged in an open slot shape with an open bottom end, and the connecting seat (5) is clamped outside the second connecting rod (4) and hinged to it.

8. The box door hinge with a lifting function according to claim 1, characterized in that: The main body (1), the first connecting rod (3), the second connecting rod (4) and the connecting seat (5) are integrally formed by stamping metal sheets.

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