Double shaft single-curve arm 180-degree hinge structure

Abstract

The application discloses a kind of double-shaft single-curved-arm 180 degree hinge structure, door frame hinge plate includes hinge seat, both sides wall on hinge seat is equipped with arc track, still be equipped with limiting area in the tail end of arc track, the upper of arc track is equipped with retractable limiting component, swing arm shaft component includes swing arm, the first end of swing arm is fixed on the side wall of hinge seat by pivot one, middle position is bent and extends towards the direction of door leaf hinge plate, arc-shaped buffer groove is equipped on middle position, slide column is inserted in arc-shaped buffer groove, end of slide column is inserted in sliding track and is slidably connected, the tail end of swing arm is equipped with arc-shaped sleeve mouth and arc-shaped clamping slot, arc-shaped sleeve mouth is sleeved on pivot two, both ends of pivot two are fixed on the inner wall of door leaf hinge plate, positioning shaft one is arranged in arc-shaped clamping slot, both ends of positioning shaft one are fixed on the inner wall of door leaf hinge plate.The hinge structure of the application can open the door leaf by 180 degrees, expand the opening space of the door leaf, and has higher practicability.

Description

Technical Field

[0001] This invention relates to the field of door hinge technology, and more specifically, to a dual-axis single-bend 180-degree hinge structure. Background Technology

[0002] Doors, mounted on door frames, require frequent opening and closing movements, which must be achieved through door hinges. A door hinge consists of a door hinge plate and a door frame hinge plate, as well as a shaft connecting the two. The door hinge plate rotates along the door frame hinge plate via the shaft, allowing the door to open to its maximum extent. However, due to the limitations of existing door hinges, the opening angle of existing doors is limited to between 110° and 140°, preventing the door from reaching its maximum 180° opening. In some special situations, this limitation restricts the open space at the doorway, hindering the passage of larger objects and affecting usability. To address these issues, this application proposes a double-axis single-arc 180° hinge structure that allows the door to open 180°. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a dual-axis single-bend arm 180-degree hinge structure that enables the door leaf to open 180°.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dual-axis single-bend arm 180-degree hinge structure, a door leaf hinge plate and a door frame hinge plate, and a swing arm shaft assembly connecting the two. The door frame hinge plate includes a hinge seat, on which arc-shaped tracks are provided on both side walls. The arc-shaped tracks are inclined upwards from one end of the hinge seat towards the other end. A limiting area is also provided at the tail end of the arc-shaped track. A retractable limiting component is provided above the arc-shaped track, with the end of the limiting component extending into the limiting area. The swing arm shaft assembly includes a swing arm. The first end of the swing arm is fixed to the side wall of the hinge seat via a pivot. The middle part of the swing arm bends and extends towards the door hinge plate. An arc-shaped buffer groove is provided in the middle part. A sliding column is inserted into the arc-shaped buffer groove. The end of the sliding column is inserted into the arc-shaped track for sliding engagement. The tail end of the swing arm is provided with an arc-shaped sleeve and an arc-shaped clamping groove. The arc-shaped sleeve is fitted onto a pivot. The two ends of the pivot are fixed to the inner wall of the door hinge plate. A positioning shaft is inserted through the arc-shaped clamping groove. The two ends of the positioning shaft are fixed to the inner wall of the door hinge plate.

[0005] The present invention is further configured such that: the limiting component includes a limiting piece, one end of which is fixed to the two side walls of the hinge seat via a rotating shaft three, and the other end is provided with an arc-shaped guide piece. A positioning shaft two is inserted into the arc-shaped groove of the arc-shaped guide piece. Both ends of the positioning shaft two are fixed to the two side walls of the hinge seat. One end of the arc-shaped guide piece extends into the limiting area, and the back of the other end is provided with a protrusion. A spring is sleeved on the protrusion, and the other end of the spring is sleeved on a fixing block. The fixing block is located on the inner wall of the hinge seat.

[0006] The present invention is further configured such that: an auxiliary frame is provided inside the swing arm, the auxiliary frame includes two frame bodies and a connecting shaft connecting the two frame bodies, the two ends of the connecting shaft pass through the frame bodies and are fixed on the swing arm, one end of the frame body is provided with an arc-shaped hook ring one, which is sleeved on the sliding column, and the other end is provided with an arc-shaped hook ring two, which is sleeved on the rotating shaft two.

[0007] The present invention is further configured such that the limiting piece, the arc-shaped guide piece, and the protrusion are all integrally formed.

[0008] The present invention is further configured such that: the swing arm is provided with bushings at both the first and second pivots, and the bushings are integrally formed with the swing arm.

[0009] By adopting the above technical solution, when the door is opened, the door hinge plate moves with the door, driving the swing arm shaft assembly to move. The swing shaft on the swing arm shaft assembly moves along the first pivot, while the sliding column moves along the arc track to the limit area, where it is limited by the limit assembly to prevent it from leaving the arc track. It continues to push the door, causing the door hinge plate to rotate along the second pivot, so that the entire door rotates 180°, expanding the opening width of the door and improving its practicality. Attached Figure Description

[0010] Figure 1 This is the structural state of the present invention. Figure 1 ; Figure 2 This is the structural state of the present invention. Figure 2 ; Figure 3 This is the structural state of the present invention. Figure 3 ; Figure 4 Schematic diagram of the swing arm shaft assembly Figure 1 ; Figure 5 This is a schematic diagram of a partial structure of the door frame hinge plate. Figure 6 Schematic diagram of the swing arm shaft assembly Figure 2 .

[0011] 1. Door frame hinge plate; 10. Hinge seat; 11. Arc-shaped track; 12. Limiting zone; 2. Door leaf hinge plate; 3. Limiting assembly; 30. Limiting piece; 31. Arc-shaped guide piece; 32. Positioning shaft two; 33. Protrusion; 34. Spring; 35. Fixing block; 36. Rotating shaft three; 4. Swing arm shaft assembly; 40. Swing arm; 400. Auxiliary frame; 401. Connecting shaft; 402. Arc-shaped hook one; 403. Arc-shaped hook two; 404. Bushing; 405. Frame; 41. Rotating shaft one; 42. Arc-shaped buffer groove; 43. Sliding column; 44. Arc-shaped sleeve; 45. Arc-shaped clamping groove; 46. Rotating shaft two; 47. Positioning shaft one. Detailed Implementation

[0012] Reference Figures 1 to 6 The embodiments of the present invention will be further described below.

[0013] A dual-axis single-arc arm 180-degree hinge structure includes a door leaf hinge plate 2 and a door frame hinge plate 1, and a swing arm shaft assembly 4 connecting the two. The door frame hinge plate 1 includes a hinge seat 10, on which arc-shaped tracks 11 are provided on both side walls. The arc-shaped tracks 11 are inclined upwards from one end of the hinge seat 10 to the other end. A limiting area 12 is provided at the tail end of the arc-shaped track 11. A retractable limiting component 3 is provided above the arc-shaped track 11, and the end of the limiting component 3 extends into the limiting area 12. The swing arm shaft assembly 4 includes a swing arm 40, the head end of which is connected by a pivot 4. 1. Fixed to the side wall of hinge seat 10, with its middle part bent and extending towards the door hinge plate 2. An arc-shaped buffer groove 42 is provided in the middle part. A sliding column 43 is inserted into the arc-shaped buffer groove 42. The end of the sliding column 43 is inserted into the arc-shaped track for sliding engagement. The tail end of the swing arm 40 is provided with an arc-shaped sleeve 44 and an arc-shaped clamping groove 45. The arc-shaped sleeve 44 is sleeved on the second rotating shaft 46. The two ends of the second rotating shaft 46 are fixed to the inner wall of the door hinge plate 2. A positioning shaft 47 is provided in the arc-shaped clamping groove 45. The two ends of the positioning shaft 47 are fixed to the inner wall of the door hinge plate 2.

[0014] Working principle: When the door is closed, the hinge structure is such that the door frame hinge plate 1 and the door leaf hinge plate 2 are parallel (refer to the instruction manual). Figure 1 When the door needs to be opened, rotating the door causes the door hinge plate 2 to move accordingly. As the door hinge plate 2 moves, it drives the swing arm shaft assembly 4 to move. The swing arm 40 rotates along the pivot 41, and the sliding column 43 moves along the arc track 11 to the limiting area 12. At this point, the door is in an open state of approximately 160° (refer to the instruction manual). Figure 2When the sliding column 43 moves into the limiting area 12, it abuts against one end of the arc-shaped guide plate 31, thus limiting the position of the sliding column 43 and preventing it from completely disengaging from the arc-shaped track 11. Then, as the door leaf continues to be pushed, the door leaf hinge plate 2 moves, and the end of the swing arm 40 with the arc-shaped sleeve 44 rotates along the second pivot 46. The first positioning shaft 47 can also move along the arc-shaped clamping groove 45, causing the door leaf hinge plate 2 and the door frame hinge plate 1 to be in a 180° open state (refer to the instruction manual appendix). Figure 3 The above structural improvements allow the door to open 180°, increasing the width of the door opening and making it more convenient to use.

[0015] The limiting component 3 includes a limiting piece 30. One end of the limiting piece 30 is fixed to the two side walls of the hinge seat 10 via a pivot 36. The other end is provided with an arc-shaped guide piece 31. A positioning shaft 32 is inserted into the arc-shaped groove of the arc-shaped guide piece 31. Both ends of the positioning shaft 32 are fixed to the two side walls of the hinge seat 10. One end of the arc-shaped guide piece 31 extends into the limiting area 12. A protrusion 33 is provided on the back of the other end. A spring 34 is sleeved on the protrusion 33. The other end of the spring 34 is sleeved on a fixing block 35. The fixing block 35 is located on the inner wall of the hinge seat 10. The limiting plate 30, driven by the force of the spring 34, causes one end of the arc-shaped guide plate 31 to extend into the limiting area 12. When the sliding column 43 moves into the limiting area 12, it will abut against the arc-shaped guide plate 31. With the help of the limiting plate 30 rotating within a small range along the rotating shaft 36 and the contraction force of the spring 34, the sliding column 43 can be locked in the limiting area 12 after moving into it, preventing it from leaving the limitation of the arc-shaped track 11 during movement.

[0016] The swing arm 40 is equipped with an auxiliary frame 400, which includes two frame bodies 405 and a connecting shaft 401 connecting the two frame bodies 405. Both ends of the connecting shaft 401 pass through the frame bodies 405 and are fixed to the swing arm 40. One end of each frame body 405 has an arc-shaped hook 402, which is fitted onto a sliding column 43, and the other end has an arc-shaped hook 403, which is fitted onto a rotating shaft 46. The limiting plate 30, the arc-shaped guide plate 31, and the protrusion 33 are all integrally formed. The swing arm 40 has bushings 404 at the corresponding rotating shafts 41 and 46, and these bushings 404 are integrally formed with the swing arm 40. The auxiliary frame 400 inside the swing arm 40 increases the structural strength of the swing arm 40, making it less prone to damage during repeated opening and closing operations, thus extending its service life and enhancing the product's structural quality.

[0017] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A dual-axis single-arc arm 180-degree hinge structure, comprising a door leaf hinge plate and a door frame hinge plate, and a swing arm shaft assembly connecting the two, characterized in that: The door frame hinge plate includes a hinge base, with arc-shaped tracks on both side walls of the hinge base. The arc-shaped tracks are inclined upwards from one end of the hinge base towards the other. A limiting area is provided at the tail end of the arc-shaped track. A retractable limiting component is provided above the arc-shaped track, with its end extending into the limiting area. The swing arm shaft assembly includes a swing arm. The first end of the swing arm is fixed to the side wall of the hinge base via a pivot. The middle portion of the swing arm bends and extends towards the door hinge plate. An arc-shaped buffer groove is provided in the middle portion, and a sliding column is inserted into the arc-shaped buffer groove. The end of the sliding column is inserted into the arc-shaped track for sliding engagement. The tail end of the swing arm has an arc-shaped sleeve and an arc-shaped clamping groove. The arc-shaped sleeve is fitted onto the second rotating shaft, and both ends of the second rotating shaft are fixed to the inner wall of the door hinge plate. A positioning shaft is provided through the arc-shaped clamping groove, and both ends of the positioning shaft are fixed to the inner wall of the door hinge plate. The limiting component includes a limiting piece, one end of which is fixed to the two side walls of the hinge seat via the third rotating shaft, and the other end is provided with an arc-shaped guide piece. The positioning shaft is inserted into the arc-shaped groove of the arc-shaped guide piece, and both ends of the positioning shaft are fixed to the two side walls of the hinge seat. One end of the arc-shaped guide piece extends into the limiting area, and the back of the other end is provided with a protrusion. A spring is fitted on the protrusion, and the other end of the spring is fitted onto a fixing block, which is located on the inner wall of the hinge seat.

2. The dual-axis single-arc arm 180-degree hinge structure according to claim 1, characterized in that: The swing arm is equipped with an auxiliary frame, which includes two frame bodies and a connecting shaft connecting the two frame bodies. The two ends of the connecting shaft pass through the frame bodies and are fixed to the swing arm. One end of the frame body is provided with an arc-shaped hook ring 1, which is sleeved on the sliding column, and the other end is provided with an arc-shaped hook ring 2, which is sleeved on the rotating shaft 2.

3. The dual-axis single-arc arm 180-degree hinge structure according to claim 1, characterized in that: The limiting plate, arc-shaped guide plate, and protrusion are all integrally formed.

4. The dual-axis single-arc arm 180-degree hinge structure according to claim 2, characterized in that: The swing arm is provided with a bushing at both the first and second pivot points, and the bushing is integrally formed with the swing arm.

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