Automobile door hinge

Abstract

The application discloses a kind of automobile door hinges in the embodiment, including arc link, straight bar, center rod and sleeve, one end of center rod is inserted in sleeve, the other end is connected with the one end of straight bar vertically, one end of arc link is connected with straight bar, and the other end is connected with door;The side of the center rod is provided with lug, and the sleeve is provided with elastic buffer device, and the lug is rotated with the center rod, and is docked with the elastic buffer device;Elastic buffer device applies reverse force to the lug.When the door rotates, the lug rotates with the center rod, and is docked with the elastic buffer device;Elastic buffer device applies reverse force to the lug. Further rotation of the lug is prevented. And, the more compressed torsion spring is, the greater the elastic force is, the greater the amplitude of the lug rotation is, and the greater the resistance of the elastic buffer device to the lug is. Reduce the impact of straight bar or door on the hinge, and door frame pressure.

Description

Technical Field

[0001] This invention relates to an automotive door hinge, and more particularly to its buffer and anti-impact structure, belonging to the field of automotive technology. Background Technology

[0002] When opening a car door, excessive force or speed can cause significant impact, damaging the hinges, causing them to twist, and damaging or deforming the door frame. Therefore, mitigating the impact of rapidly rotating car doors on the hinges is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide an automotive door hinge to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an automotive door hinge, comprising an arc-shaped connecting rod, a straight rod, a central rod, and a sleeve. One end of the central rod is inserted into the sleeve, and the other end is perpendicularly connected to one end of the straight rod. One end of the arc-shaped connecting rod is connected to the straight rod, and the other end is connected to the car door. A protrusion is provided on the side of the central rod, and an elastic buffer device is provided on the sleeve. The protrusion rotates with the central rod in the forward direction and engages with the elastic buffer device. The elastic buffer device applies a reverse force to the protrusion.

[0005] The invention is further configured such that: the elastic buffer device includes a torsion spring and a second stop, the second stop is connected to the sleeve, the torsion spring is sleeved on the outside of the sleeve, one end of the torsion spring is connected to the second stop, and the other end drives the protrusion to rotate in the opposite direction.

[0006] The present invention is further configured such that: the elastic buffer device further includes a buffer block and a bearing, the inner ring of the bearing is fixedly connected to the outer wall of the sleeve, one end of the buffer block is connected to the outer ring of the bearing, and the other end of the buffer block is abutted against the protrusion; the other end of the torsion spring is fixedly connected to the buffer block.

[0007] A further configuration of the present invention is as follows: a first stop is fixedly connected to the sleeve, and the torsion spring drives the buffer block to abut against the first stop; the protrusion passes over the first stop and then docks with the buffer block.

[0008] A further feature of the present invention is that the end of the sleeve is provided with an annular notch; the protrusion passes through the notch and rotates within the notch.

[0009] The invention is further configured such that: a limiting plate is connected to the end of the notch, and the buffer block moves between the first stop and the limiting plate; when the torsion spring is compressed to its limit position, the protrusion pushes the buffer block, and the buffer block abuts against the limiting plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a protrusion on the side of the central rod and an elastic buffer device on the sleeve, when the door rotates, the protrusion rotates forward with the central rod and engages with the elastic buffer device; the elastic buffer device applies a counterforce to the protrusion, preventing further rotation of the protrusion. Furthermore, the more the torsion spring is compressed, the greater the elastic force, the greater the amplitude of the protrusion's rotation, and the greater the resistance of the elastic buffer device to the protrusion. This reduces the impact of the straight rod or door on the hinge and the pressure on the door frame. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a car door hinge according to a preferred embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the sleeve and bearing structure;

[0013] Figure 3 A three-dimensional structural diagram of a car door hinge;

[0014] Figure 4 This is a three-dimensional structural diagram of a car door hinge from another perspective.

[0015] In the diagram: 1. Door; 2. Arc-shaped connecting rod; 3. Straight rod; 4. Center rod; 5. Sleeve; 6. Bearing; 7. Buffer block; 8. Limiting plate; 9. Protrusion; 10. Torsion spring; 51. Notch; 52. First stop block; 53. Second stop block. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0017] See appendix Figure 1-4 As shown, an automotive door hinge in this embodiment includes an arc-shaped connecting rod 2, a straight rod 3, a central rod 4, and a sleeve 5. One end of the central rod 4 is inserted into the sleeve 5, and the other end is perpendicularly connected to one end of the straight rod 3. One end of the arc-shaped connecting rod 2 is connected to the straight rod 3, and the other end is connected to the door 1. A protrusion 9 is provided on the side of the central rod 4, and an elastic buffer device is provided on the sleeve 5. The protrusion 9 rotates forward with the central rod 4 and engages with the elastic buffer device. The elastic buffer device applies a reverse force to the protrusion 9.

[0018] The elastic buffer device includes a torsion spring 10, a buffer block 7, a first stop block 52, a second stop block 53, and a bearing 6. The first stop block 52 and the second stop block 53 are respectively fixedly connected to one end of the sleeve 5. The torsion spring 10 is sleeved on the outside of the sleeve 5, with one end of the torsion spring 10 connected to the second stop block 53 and the other end connected to the buffer block 7. The inner ring of the bearing 6 is fixedly connected to the outer wall of the sleeve 5. One end of the buffer block 7 is connected to the outer ring of the bearing 6, and the other end is connected to the protrusion 9. The buffer block 7 moves between the first stop block 52 and the limiting plate 8. The torsion spring 10 drives the buffer block 7 to abut against the first stop block 52. The protrusion 9 passes over the first stop block 52 and then abuts against the buffer block 7. An annular notch 51 is provided at the end of the sleeve 5. The protrusion 9 passes through the notch 51 and rotates within the notch 51. The end of the notch 51 is connected to the limiting plate 8. When the torsion spring 10 is compressed to its limit position, the protrusion 9 pushes the buffer block 7, and the buffer block 7 abuts against the limiting plate 8.

[0019] In summary, the principle of the car door hinge shown in this invention is as follows: When the car door 1 is opened, the arc-shaped connecting rod 2, the straight rod 3, and the central rod 4 rotate, and the protrusion 9 rotates forward in the notch 51, passing the first stop 52 and engaging with the buffer block 7. At this time, the torsion spring 10 and the buffer block 7 apply opposing forces to the protrusion 9, hindering further rotation of the protrusion. The more the torsion spring 10 is compressed, the greater the elastic force, the greater the rotation amplitude of the protrusion 9, and the greater the resistance of the elastic buffer device to the protrusion 9. When the torsion spring 10 is compressed to its limit position by the protrusion, the protrusion 9 pushes the buffer block 7, and the buffer block 7 abuts against the limiting plate 8. The elastic buffer device reduces the impact of the straight rod 3 or the car door 1 on the hinge, as well as the pressure on the door frame, thus protecting the hinge and the door frame.

[0020] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automotive door hinge, comprising an arc-shaped connecting rod, a straight rod, a center rod, and a sleeve, wherein one end of the center rod is inserted into the sleeve and the other end is perpendicularly connected to one end of the straight rod, and one end of the arc-shaped connecting rod is connected to the straight rod and the other end is connected to a car door; Its features are, A protrusion is provided on the side of the central rod, and an elastic buffer device is provided on the sleeve. The protrusion rotates with the central rod in the forward direction and engages with the elastic buffer device; the elastic buffer device applies a reverse force to the protrusion; the elastic buffer device includes a torsion spring and a second stop, the second stop being connected to the sleeve, the torsion spring being sleeved on the outside of the sleeve, one end of the torsion spring being connected to the second stop, and the other end driving the protrusion to rotate in the reverse direction; the elastic buffer device also includes a buffer block and a bearing, the inner ring of the bearing being fixedly connected to the outer wall of the sleeve, and one end of the buffer block being connected to the outer ring of the bearing, buffering... The other end of the punch block is connected to the protrusion; the other end of the torsion spring is fixedly connected to the buffer block; a first stop block is fixedly connected to the sleeve, and the torsion spring drives the buffer block to abut against the first stop block; the protrusion passes over the first stop block and then abuts against the buffer block; an annular notch is provided at the end of the sleeve; the protrusion passes through the notch and rotates in the notch; a limit plate is connected to the end of the notch, and the buffer block moves between the first stop block and the limit plate; when the torsion spring is compressed to its limit position, the protrusion pushes the buffer block, and the buffer block abuts against the limit plate.

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