Box door hinge with hovering function

Abstract

A box door hinge with a hovering function comprises a main body installed on a box body and a hinge arm installed on a box door, the hinge arm is installed on the main body in a hinged mode in a swinging mode, the hinge arm rotates around a hinge point to achieve opening and closing of the box door, a containing groove is formed in the main body, the hinge arm is installed in the containing groove, and the hinge arm is installed on the box door. A containing groove is formed in the main body, a locking column is further installed in the containing groove and sleeved on the sliding shaft, an elastic pushing device is further arranged between the sliding shaft and the main body, the elastic pushing device pushes the sliding shaft to move towards the direction of the hinge arm all the time, a locking groove is formed in the hinge arm, and when the hinge arm is closed, the locking column is clamped in the locking groove under the pushing effect of the elastic pushing device. And the closing state of the hinge arm is locked. The beneficial effects of the utility model are that in the opening and closing process of the box door, the pushing force generated by the elastic pushing device enables the box door to be suspended at any angle in the opening and closing process through the mutual balance effect between the lock column and the hinge arm and between the linkage rod and the hinge arm.

Description

Technical Field

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

[0002] In modern industrial and household applications, cabinet door hinges are a very common mechanical component, widely used in various cabinet equipment, such as tool boxes, electrical cabinets, chassis, storage cabinets, ovens, steam cabinets, etc. Traditional cabinet door hinges mainly connect the cabinet body and the cabinet door, allowing the cabinet door to rotate smoothly when opening and closing. However, existing cabinet door hinges usually do not have a self-locking function, which leads to some significant problems.

[0003] For example, without a self-locking function, the door can be easily opened accidentally after closing due to external vibration or human error. This phenomenon is particularly obvious during transportation or use, which may cause leakage or damage to the items in the box. Especially in application scenarios where airtightness needs to be maintained, such as in boxes storing sensitive electronic equipment, valuable tools or food, the failure of the door to reliably self-lock will bring serious safety hazards and economic losses.

[0004] In addition, although the existing door hinge design solves the convenience of opening and closing to a certain extent, it lacks effective protection measures for safety and sealing after closing. This design defect exposes the following major problems in practical application:

[0005] 1. Safety issues: When the door is accidentally opened, the items inside may fall out, causing personal injury or equipment damage. For example, during transportation, if the door does not have a self-locking function, vibrations may cause the door to open, causing the items inside to scatter.

[0006] 2. Sealing problem: The door without self-locking function cannot be tightly fitted when closed, which may cause loose sealing. This is very unfavorable for storing items with high environmental requirements, such as dust-proof and moisture-proof items.

[0007] 3. Operational convenience: During use, users need to confirm whether the door is completely closed, which increases the complexity of operation and the burden of use. This defect is more obvious when frequent opening and closing are required. Therefore, it is necessary to make further improvements. Utility Model Content

[0008] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a door hinge with a hovering function which is simple in structure, easy to use, can hover during the door opening process, and can automatically lock when the door is closed to prevent accidental opening and ensure sealing.

[0009] The utility model aims to achieve the following purpose: a door hinge with a hovering function, comprising a main body mounted on a box body, and a hinge arm mounted on the door, the hinge arm being swingably hingedly mounted on the main body, the hinge arm rotating around a hinge point to realize the opening and closing of the door, a receiving groove being arranged in the main body, the hinge arm being mounted in the receiving groove, a locking column being also mounted in the receiving groove, the locking column being sleeved on a sliding shaft, the two ends of the sliding shaft being inserted in the sliding groove on the main body for forward and backward movement, an elastic pushing device being also arranged between the sliding shaft and the main body, the elastic pushing device pushing the sliding shaft to always move in the direction of the hinge arm, a locking groove being arranged on the hinge arm, when the hinge arm is closed, the locking column is inserted into the locking groove under the pushing action of the elastic pushing device to lock the closed state of the hinge arm;

[0010] It also includes a connecting rod, one end of which is hinged to the hinge arm, and the other end of which is connected to the locking column. The thrust generated by the elastic pushing device is transmitted to the hinge arm through the connecting rod.

[0011] Furthermore: the hinge arm is hinged to the main body through a first hinge shaft, the linkage rod is hinged to the hinge arm through a second hinge shaft, and the second hinge shaft is arranged to deviate from the hinge point with the first hinge shaft.

[0012] Furthermore: an open slot is arranged at one end of the linkage rod, and the open slot is clamped outside the sliding shaft.

[0013] Furthermore: the connecting rod is provided with two pieces, the two connecting rods are connected by a rib plate, and the connecting rod is clamped and installed on both sides of the hinge arm.

[0014] Furthermore: the elastic pushing device is a torsion spring, which is sleeved on the torsion spring shaft and installed with the main body, the first supporting leg of the torsion spring is connected to the sliding shaft, and the second supporting leg of the torsion spring is fixed to the main body.

[0015] Furthermore: a support shaft is fixed on the main body, and the second support leg of the torsion spring is supported on the support shaft.

[0016] Furthermore: the elastic pushing device is a push spring, which is sleeved on a push spring frame, one end of the push spring frame is connected to the sliding shaft, and the other end is slidably inserted into a guide hole located in the main body, one end of the push spring is supported on the main body, and the other end is supported on the push spring frame, and the thrust of the push spring is applied to the sliding shaft through the push spring frame.

[0017] Furthermore: a fork seat is arranged at one end of the push spring frame, a concave fork groove is arranged on the end surface of the fork seat, the fork groove is clamped on the sliding shaft and connected thereto, and one end of the push spring is carried on the fork seat.

[0018] Furthermore: a support seat is extended from the bottom of the accommodating groove toward the groove, and the guide hole is arranged on the support seat.

[0019] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0020] 2. During the opening and closing process of the door, the thrust generated by the elastic pushing device is balanced between the lock column, the connecting rod and the hinge arm, so that the door can hover at any angle during the opening and closing process.

[0021] 3. When the hinge arm of the door hinge of the present invention is closed, the elastic pushing device arranged in the main body 1 automatically pushes the sliding shaft to make the lock column snap into the locking groove on the hinge arm 2, thereby realizing the automatic locking function. This design ensures that the door is always locked in the closed state, avoids accidental opening due to vibration or accidental operation, and improves the safety of use.

[0022] 4. Through the automatic clamping of the lock column in the locking groove, the door hinge of the present invention can maintain a tight fit when the door is closed, thereby improving the sealing performance of the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1-2 This is a structural exploded view of the first embodiment of the present utility model.

[0024] Figure 3-4 This is a structural exploded view of the second embodiment of the present utility model.

[0025] Explanation of the reference numerals: 1 - main body; 11 - accommodating groove; 12 - sliding groove; 2 - hinge arm; 3 - locking column; 4 - sliding shaft; 5 - connecting rod; 51 - opening groove; 52 - rib plate; 6 - first hinge shaft; 7 - second hinge shaft; 8 - torsion spring; 81 - torsion spring shaft; 82 - first supporting foot; 83 - second supporting foot; 84 - supporting shaft; 9 - push spring; 91 - push spring frame; 92 - fork seat; 93 - fork groove; 94 - support seat; 95 - guide hole. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the accompanying drawings. A door hinge with a hovering function, comprising a main body 1 mounted on a box body, and a hinge arm 2 mounted on the door, the hinge arm 2 being mounted on the main body 1 in a swinging hinged manner, and the hinge arm 2 rotating around the hinge point to realize the opening and closing of the door; a receiving groove 11 is provided in the main body 1, the hinge arm 2 is mounted in the receiving groove 11, a locking column 3 is also installed in the receiving groove 11, the locking column 3 is sleeved on a sliding shaft 4, and both ends of the sliding shaft 4 are inserted in a sliding groove 12 located on the main body 1 to move back and forth, an elastic pushing device is also provided between the sliding shaft 4 and the main body 1, the elastic pushing device pushes the sliding shaft 4 to always move in the direction of the hinge arm 2, a locking groove is provided on the hinge arm 2, when the hinge arm 2 is closed, the locking column 3 is inserted into the locking groove under the pushing action of the elastic pushing device, and the closed state of the hinge arm 2 is locked;

[0027] It also includes a connecting rod 5, one end of which is hinged to the hinge arm 2, and the other end of the connecting rod 5 is connected to the locking column 3. The thrust generated by the elastic pushing device is transmitted to the hinge arm 2 through the connecting rod 5.

[0028] In one embodiment, the hinge arm 2 is hinged to the main body 1 via a first hinge shaft 6 , the linkage rod 5 is hinged to the hinge arm 2 via a second hinge shaft 7 , and the second hinge shaft 7 is arranged away from the hinge point with the first hinge shaft 6 .

[0029] In one embodiment, an opening slot 51 is disposed at one end of the linkage rod 5 , and the opening slot 51 is clamped outside the sliding shaft 4 .

[0030] In one embodiment, the connecting rod 5 is provided with two pieces, and the two connecting rods are connected by a rib plate 52 , and the connecting rod 5 is clamped and installed on both sides of the hinge arm 2 .

[0031] In one embodiment: Figure 1-2 As shown, the elastic pushing device is a torsion spring 8, which is sleeved on a torsion spring shaft 81 and installed with the main body 1, a first supporting leg 82 of the torsion spring 8 is connected to the sliding shaft 4, and a second supporting leg 83 of the torsion spring 8 is fixed to the main body 1.

[0032] In one of the embodiments: a support shaft 84 is also fixed on the main body 1 , and the second support leg 83 of the torsion spring 8 is supported on the support shaft 84 .

[0033] In one embodiment: Figure 3-4 The elastic pushing device is a push spring 9, which is mounted on a push spring frame 91. One end of the push spring frame 91 is connected to the sliding shaft 4, and the other end is slidably inserted into a guide hole 95 located in the main body 1. One end of the push spring 9 is supported on the main body 1, and the other end is supported on the push spring frame 91. The thrust of the push spring 9 is applied to the sliding shaft 4 through the push spring frame 91.

[0034] In one of the embodiments: a fork seat 92 is provided at one end of the push spring frame 91, and a concave fork groove 93 is provided on the end surface of the fork seat 92. The fork groove 93 is clamped on the sliding shaft 4 and connected thereto, and one end of the push spring 9 is carried on the fork seat 92.

[0035] In one embodiment, a support seat 94 is extended from the bottom of the receiving groove 11 toward the inside of the groove, and the guide hole 95 is disposed on the support seat 94 .

[0036] Working principle: When the door is closed, the hinge arm 2 rotates around the first hinge shaft 6 and gradually approaches the main body 1. During the closing process, the sliding shaft 4 always moves toward the hinge arm 2 under the action of the elastic pushing device. When the hinge arm 2 is completely closed, the lock column 3 is pushed by the elastic pushing device and snaps into the locking groove on the hinge arm 2 to achieve automatic locking. At this time, the door is firmly locked to prevent accidental opening due to vibration or external force.

[0037] When the door needs to be opened, the user applies external force to rotate the hinge arm 2 around the first hinge shaft 6. While the hinge arm 2 rotates, one end of the linkage rod 5 moves with the hinge arm 2, and the other end is connected to the lock column 3 through the second hinge shaft 7. The movement direction of the linkage rod 5 is opposite to the thrust direction of the elastic pusher, and the sliding friction force generated when the lock column 3 slides on the surface of the hinge arm 2 makes the gravity of the door and the thrust and friction of the elastic pusher balanced, so that the door can hover at any angle during opening and closing, which is convenient for users to open the door to their favorite angles according to their own preferences.

[0038] Compared with the traditional technology, in this case, the lock column 3 is automatically clamped in the locking groove, so that the hinge can keep a tight fit when the door is closed, thereby improving the sealing of the door. This design is particularly suitable for application scenarios where the environment needs to be kept sealed, such as boxes for storing sensitive electronic equipment, valuable tools or food, avoiding safety hazards and economic losses caused by poor sealing of the door. It can also be used in electrical products such as microwave ovens, ovens, and steam cabinets, so that after the door is closed, the heat generated by the equipment during operation will not cause the expansion of air to push the door open in the opposite direction and cause leakage, thereby ensuring its safety in use.

[0039] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the claims created by the present invention.

Claims

1. A door hinge with a hovering function, comprising a main body (1) mounted on a box body, and a hinge arm (2) mounted on the door, wherein the hinge arm (2) is hingedly mounted on the main body (1) in a swinging manner, and the hinge arm (2) rotates around a hinge point to realize the opening and closing of the door, and is characterized in that: The main body (1) is provided with a receiving groove (11), the hinge arm (2) is installed in the receiving groove (11), a locking column (3) is also installed in the receiving groove (11), the locking column (3) is sleeved on the sliding shaft (4), the two ends of the sliding shaft (4) are inserted in the sliding groove (12) located on the main body (1) and move back and forth, an elastic pushing device is also provided between the sliding shaft (4) and the main body (1), the elastic pushing device pushes the sliding shaft (4) to always move in the direction of the hinge arm (2), a locking groove is provided on the hinge arm (2), when the hinge arm (2) is closed, the locking column (3) is inserted into the locking groove under the pushing action of the elastic pushing device, and the hinge arm (2) is locked in the closed state; It also includes a connecting rod (5), one end of which is hinged to the hinge arm (2), and the other end of which is connected to the locking column (3), and the thrust generated by the elastic pushing device is transmitted to the hinge arm (2) through the connecting rod (5).

2. The door hinge with a hovering function according to claim 1, characterized in that: The hinge arm (2) is hinged to the main body (1) via a first hinge shaft (6), the connecting rod (5) is hinged to the hinge arm (2) via a second hinge shaft (7), and the second hinge shaft (7) is arranged offset from the hinge point with the first hinge shaft (6).

3. The door hinge with a hovering function according to claim 1, characterized in that: An open groove (51) is provided at one end of the linkage rod (5), and the open groove (51) is clamped outside the sliding shaft (4).

4. The door hinge with a hovering function according to claim 1, characterized in that: The connecting rod (5) is provided in two pieces, and the two connecting rods are connected via a rib plate (52). The connecting rod (5) is clamped and installed on both sides of the hinge arm (2).

5. The door hinge with a hovering function according to claim 1, characterized in that: The elastic pushing device is a torsion spring (8), which is sleeved on a torsion spring shaft (81) and installed on the main body (1), a first supporting leg (82) of the torsion spring (8) is connected to the sliding shaft (4), and a second supporting leg (83) of the torsion spring (8) is fixed to the main body (1).

6. The door hinge with a hovering function according to claim 5, characterized in that: A support shaft (84) is also fixed on the main body (1), and the second support leg (83) of the torsion spring (8) is supported on the support shaft (84).

7. The door hinge with a hovering function according to claim 1, characterized in that: The elastic pushing device is a push spring (9), which is mounted on a push spring frame (91). One end of the push spring frame (91) is connected to the sliding shaft (4), and the other end is slidably inserted into a guide hole (95) located in the main body (1). One end of the push spring (9) is supported on the main body (1), and the other end is supported on the push spring frame (91). The pushing force of the push spring (9) is applied to the sliding shaft (4) through the push spring frame (91).

8. The door hinge with a hovering function according to claim 7, characterized in that: A fork seat (92) is provided at one end of the push spring frame (91), and an end surface of the fork seat (92) is provided with an inwardly concave fork groove (93). The fork groove (93) is clamped on the sliding shaft (4) and connected thereto, and one end of the push spring (9) is supported on the fork seat (92).

9. The door hinge with a hovering function according to claim 7, characterized in that: A support seat (94) is provided at the bottom of the accommodating groove (11) and extends inwardly of the groove, and the guide hole (95) is arranged on the support seat (94).

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