Electric appliance box door hinge with automatic reset function

Abstract

An electric appliance box door hinge with an automatic reset function comprises a fixed seat connected with a box body and a connecting seat connected with a door body, the fixed seat is hinged to the connecting seat through the door hinge, the door body swings along the door hinge to achieve opening and closing of a box door, the door hinge comprises a guide seat connected to the fixed seat, and the guide seat is connected to the guide seat. A guide groove is formed in the end face, penetrating through the guide seat, of the hinge rod; a guide column is installed at one end of the hinge rod, the guide column clamps the guide groove in the guide column, the door body is opened, the hinge rod slides along the guide groove, and the opening angle of the door body is limited. A reset mechanism is arranged between the hinge rod and the fixing seat, and the reset mechanism generates pulling force to always pull the connecting seat to swing towards the door closing direction. The door has the advantages that the guide groove is arranged to limit the opening path and the opening angle of the door body, potential safety hazards caused by excessive opening of the door body are avoided, electrical equipment is protected against damage, durability and reliability of the door body are improved, and the service life of the door body is prolonged.

Description

Technical Field

[0001] This utility model relates to a door hinge for an electrical box, specifically a door hinge for an electrical box with an automatic reset function. Background Technology

[0002] Hinges, as connectors between doors and cabinets, open and close doors by swinging the hinge, and are widely used in electrical appliances. Traditional hinges typically consist of a lever and two mounting bases hinged to it, and are popular due to their simple structure and ease of operation. However, with the diversification of applications for electrical appliances and users' increasing demands for ease of operation, hinges that only have opening and closing functions are gradually revealing their shortcomings.

[0003] Firstly, single-component swing levers only have a swing opening and closing function, lacking restrictions on the opening angle and path. This makes the door prone to over-opening under external forces such as wind or accidental collisions, causing damage to the cabinet or other items. To address these shortcomings, some manufacturers have incorporated limit blocks to control the opening angle; however, these simple structures are prone to loosening or wear over long-term use, reducing their limiting effect.

[0004] Secondly, existing hinges also lack automatic door reset. After the user opens the door, it often needs to be closed manually, which not only increases the difficulty of operation but also reduces its convenience. Furthermore, if the user forgets to close the door, it may remain open for an extended period, increasing the risk of exposure to the internal components of electrical equipment. Dust and bacteria can easily enter, affecting the internal hygiene or safety of the equipment. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide an electrical box door hinge with an automatic reset function. This hinge has a simple structure, low manufacturing cost, restricts the opening path and opening angle of the door, protects electrical equipment from damage, improves safety, and has an automatic door closing and reset function, enhancing operational convenience. The tension can be adjusted to adapt to different weight types of doors.

[0006] The objective of this invention is achieved through the following method: an electrical box door hinge with an automatic reset function, comprising a fixed base connected to the box body and a connecting base connected to the door body, wherein the fixed base and the connecting base are hinged together by a door hinge, and the door body swings along the door hinge to realize the opening and closing of the box door.

[0007] The door hinge includes a guide seat connected to a fixed base and a hinge rod hinged to a connecting base. A guide groove is provided through the end face of the guide seat. A guide post is installed at one end of the hinge rod, and the guide post clamps the guide groove inside it. When the door is opened, the hinge rod slides along the guide groove to limit the opening angle of the door.

[0008] A reset mechanism is provided between the hinge rod and the fixed seat. The reset mechanism generates a pulling force, which always pulls the connecting seat to swing in the closing direction.

[0009] The guide groove has an inverted V-shaped trajectory, with the inner end having a shallower inclination than the outer end. The inner end protrudes outward to form a positioning hole, and the guide post is placed in the positioning hole to lock the door in the closed state.

[0010] The diameter of the positioning hole is greater than the cross-sectional width of the guide groove.

[0011] The guide seat extends outward to form an insert plate, and correspondingly, the fixing seat is provided with a slot, into which the insert plate is detachably inserted.

[0012] The guide seat has several rivet holes through it, and rivets pass through the rivet holes to rivet the fixed seat, connecting the guide seat and the fixed seat into one unit.

[0013] The hinge rods are distributed in an arc shape.

[0014] The reset mechanism includes several adjustment holes provided through one end of the hinge rod, and a locking platform distributed inside the fixed base; the reset mechanism also includes a tension spring, with hooks at both ends of the tension spring respectively hooked onto the adjustment holes and the locking platform, the tension spring generates tension, pulling the hinge rod to swing inward, and the door is always in the closed state.

[0015] The regulating holes are arranged axially at equal intervals and are of several kinds.

[0016] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness. 2. The guide groove restricts the opening path and angle of the door, avoiding safety hazards caused by excessive door opening, protecting electrical equipment from damage, improving the durability and reliability of the door, and extending its service life. 3. Control is achieved through the cooperation of the guide column and guide groove, resulting in a compact structure, stable and firm connection, improving the smoothness of the door opening process, and enhancing the user experience. 4. Automatic door closing and reset improves the ease of operation, protects the internal cleanliness of electrical equipment, and ensures high safety. 5. The tension of the spring is adjustable to adapt to different door weights and usage environments, improving the versatility of the door. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the open state of the door hinge in this utility model.

[0018] Figure 2-3 This is a schematic diagram of the closed state of the door hinge in this utility model.

[0019] Figure 4 This is a structural assembly drawing of the door hinge in this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. An electrical box door hinge with an automatic reset function includes a fixed base 1 connected to the box body and a connecting base 2 connected to the door body. The fixed base 1 and the connecting base 2 are hinged together by a door hinge 3. The door body swings along the door hinge 3 to realize the opening and closing of the box door.

[0021] The door hinge 3 includes a guide seat 31 connected to the fixed seat 1 and a hinge rod 32 hinged to the connecting seat 2. A guide groove 4 is provided through the end face of the guide seat 31. A guide post 5 is installed at one end of the hinge rod 32. The guide post 5 clamps the guide groove 4 in it. When the door is opened, the hinge rod 32 slides along the guide groove 4 to limit the opening angle of the door.

[0022] A reset mechanism 6 is provided between the hinge rod 32 and the fixed base 1. The reset mechanism 6 generates a pulling force, which always pulls the connecting base 2 to swing in the closing direction.

[0023] The guide groove 4 has an inverted V-shaped trajectory, with its inner end having a shallower inclination than its outer end. The inner end protrudes outward to form a positioning hole 41, and the guide post 5 is inserted into the positioning hole 41 to lock the door in the closed state.

[0024] The diameter of the positioning hole 41 is greater than the cross-sectional width of the guide groove 4.

[0025] The guide seat 31 extends outward to form an insert plate 311. Correspondingly, the fixing seat 1 is provided with a slot 11, and the insert plate 311 is detachably inserted into the slot 11.

[0026] The guide seat 31 has several riveting holes 312 through it. Rivets pass through the riveting holes 312 and are riveted to the fixed seat 1, connecting the guide seat 31 and the fixed seat 1 into one unit.

[0027] The hinge rods 32 are distributed in an arc shape.

[0028] The reset mechanism 6 includes several adjustment holes 61 provided through one end of the hinge rod 32, and a locking platform 62 distributed inside the fixed base 1; the reset mechanism 6 also includes a tension spring 7, with hooks at both ends of the tension spring 7 respectively hooked onto the adjustment holes 61 and the locking platform 62, the tension spring 7 generates tension, pulling the hinge rod 32 to swing inward, and the door is always in the closed state.

[0029] The adjustment holes 61 are distributed equidistantly along the axis in several places.

[0030] Working principle: A fixed seat is installed in the box body, and a connecting seat is installed in the door body. The fixed seat and the connecting seat are hinged by the door hinge, so that the door body swings along the axis of the door hinge, thereby realizing the opening and closing function of the box door.

[0031] The door hinge includes a guide seat riveted to the fixed base. The guide seat is riveted to the fixed base, thereby connecting the guide seat and the fixed base into one unit.

[0032] The door hinge also includes a hinge rod hinged to the connecting seat, with one end of the hinge rod hinged to the connecting seat and swinging. A guide groove is provided through the guide seat corresponding to the other end of the hinge rod. The guide groove is held in place by a guide post installed at the end of the hinge rod, and the guide post can slide along the guide groove.

[0033] When the door is closed, the guide post is locked in the positioning hole at the inner end of the guide groove, thus locking the door in the closed state. The diameter of this positioning hole is greater than the cross-sectional width of the guide groove, allowing the guide post to enter smoothly and without obstruction, and preventing it from easily coming loose. This creates a stable closed state, ensuring the stability of the guide post when the door is closed. This effectively prevents accidental opening due to external forces, improving the reliability and stability of the closed state and ensuring high safety.

[0034] During the door opening process, the user pulls outward using the hinge rod, causing the guide post to disengage from the positioning hole and slide out to the outer end guided by the guide groove. The guide groove is arranged in an inverted V shape. During door opening, the inclination depth of the inner end is less than that of the outer end. After the door opens to a certain angle, the guide post crosses the intersection of the inverted V shapes and enters the outer inclined section. At this point, the door opens quickly under the downward tilting angle, saving the user's effort in opening the door. Once the door is opened to a certain angle, the guide post locks into the outer end of the guide groove, limiting further outward opening and controlling the maximum opening angle. This prevents damage to the door or hinge due to excessive external force, improves the durability of the component structure, protects electrical equipment, and extends its service life.

[0035] A reset mechanism is also provided between the hinge rod and the fixed base. The reset mechanism generates a pulling force, which constantly pulls the connecting base to swing in the closing direction, automatically resetting the door. It should be noted that the reset mechanism includes several adjustment holes through one end of the hinge rod and locking platforms distributed inside the fixed base. The hooks at both ends of the tension spring are respectively hooked onto the adjustment holes and locking platforms. After the door is opened, the tension spring is passively stretched to generate a pulling force. This pulling force is stored to provide power for subsequent closing. This power pulls the connecting base inward through the hinge rod, so that the door is always in the closed state, realizing the automatic closing and resetting operation of the door.

[0036] The adjustment holes are equidistantly distributed along the axis. Users can select the appropriate adjustment hole according to their actual needs to adjust the tension of the tension spring, adapt to the weight of different doors and the usage environment, and improve the versatility and practicality of the door.

[0037] In the aforementioned guide seat, an insert plate extends outward from its inner end. Corresponding to the insert plate, a slot is provided at the fixed seat end. The insert plate is detachably inserted into the slot, which facilitates the quick installation and removal of the guide seat, reduces the maintenance difficulty of the door hinge, and ensures the stable connection of the guide seat. It is especially suitable for scenarios with frequent use or replacement and adjustment, so it can be widely promoted.

[0038] 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. An electric appliance box door hinge with automatic reset function, comprising a fixed seat (1) connected with a box body and a connecting seat (2) connected with a door body, the fixed seat (1) and the connecting seat (2) are hinged by a door hinge (3), the door body swings along the door hinge (3) to realize the opening and closing of the box door, characterized in that: the door hinge (3) comprises a guide seat (31) connected with the fixed seat (1) and a hinge rod (32) hingedly installed with the connecting seat (2), a guide groove (4) is arranged through the end face of the guide seat (31); a guide column (5) is installed at one end of the hinge rod (32), the guide column (5) clamps the guide groove (4) therein, when the door body is opened, the hinge rod (32) slides along the guide groove (4) to limit the opening angle of the door body; a reset mechanism (6) is arranged between the hinge rod (32) and the fixed seat (1), the reset mechanism (6) generates a pulling force to always pull the connecting seat (2) to swing in the closing direction. The track of the guide groove (4) is inverted V-shaped, the inclination depth of the inner end is smaller than that of the outer end; the inner end protrudes outward to form a positioning hole (41), the guide column (5) is clamped in the positioning hole (41), and the closed state of the door body is locked.

2. The appliance door hinge with automatic reset function according to claim 1, characterized in that: The diameter of the positioning hole (41) is greater than the cross-sectional width of the guide groove (4).

3. The appliance door hinge with automatic reset function according to claim 2, characterized in that: The guide seat (31) protrudes outward to form a plug plate (311), and the fixed seat (1) is correspondingly provided with a plug groove (11), the plug plate (311) is detachably inserted into the plug groove (11).

4. The appliance door hinge with automatic reset function according to claim 1, characterized in that: The guide seat (31) is provided with a plurality of rivet holes (312) penetrating through, a rivet passes through the rivet holes (312) and is riveted with the fixed seat (1), so that the guide seat (31) and the fixed seat (1) are connected as a whole.

5. The appliance door hinge with automatic reset function according to claim 1, characterized in that: The hinge rod (32) is distributed in a circular arc shape.

6. The appliance door hinge with automatic reset function according to claim 1, characterized in that: The reset mechanism (6) comprises a plurality of adjusting holes (61) arranged through one end of the hinge rod (32) and a clamping table (62) distributed at the inner end of the fixed seat (1); the reset mechanism (6) further comprises a tension spring (7), the hooks at both ends of the tension spring (7) are respectively hung on the adjusting holes (61) and the clamping table (62), the tension spring (7) generates a pulling force to pull the hinge rod (32) to swing inward, and the door body is always in a closed state.

7. The appliance door hinge with automatic reset function according to claim 1, characterized in that: The adjusting holes (61) are axially equidistantly distributed.

8. The appliance door hinge with automatic reset function according to claim 7, characterized in that: ​

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