A locking retention mechanism for a car pedestrian protection hinge

Abstract

The utility model relates to hinge technical field, concretely relates to a locking and holding mechanism for automobile pedestrian protection hinge, the cover piece of the design passes through the feature of pivot and ratchet, and then is hinged with connecting rod piece, and the friction of relative rotation is reduced to the antifriction bushing set between pivot and connecting rod piece, and the special-shaped spring is fixed to the one side of connecting rod piece through the rotation stop rivet, the special-shaped spring is resisted at ratchet, realizes only to allow the cover piece to be relative to connecting rod piece and to turn over upwards and inhibits to turn over downwards function, and in the process of cover turning over downwards, the special-shaped spring effectively absorbs the cover kinetic energy through the collapse deformation, reduces the concussion time of cover, in addition, the positioning shaft is embedded into the connecting rod piece and extends into the positioning groove of cover piece, cooperates the design of anti -drop ring and positioning end, further strengthens the stability and reliability of structure, thereby satisfies the locking function, simplifies the locking mechanism and increases the kinetic energy absorption function.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, and in particular to a locking and retaining mechanism for a pedestrian protection hinge for automobiles. Background Technology

[0002] Currently, existing pedestrian protection hinges play a crucial role in automotive safety. When a car collides with a pedestrian, the explosive device detonates, and the pedestrian protection hinge can raise the hood to a designated height within milliseconds, providing a buffer space for the pedestrian and reducing direct impact on the pedestrian's head and other critical areas against the vehicle's rigid structure, thereby mitigating the severity of pedestrian injuries. Some pedestrian protection hinges also have a locking function, which can stabilize the hood after it reaches its highest point, preventing it from falling freely and ensuring a safe space for pedestrians after a collision.

[0003] However, in order to stabilize the headgear at the required height within milliseconds and prevent it from bouncing downwards after reaching its highest point, some pedestrian safety hinges have added relatively complex mechanisms. In addition, some pedestrian safety hinges only have a locking function and cannot effectively absorb the energy of the headgear bouncing downwards. Utility Model Content

[0004] The purpose of this invention is to provide a locking and retaining mechanism for pedestrian protection hinges for automobiles, aiming to solve the technical problems in the prior art where, in order to stabilize the headlight at the required height within a millisecond time period and suppress the downward rebound of the headlight after reaching the high point, some pedestrian protection hinges have added relatively complex mechanisms. In addition, some pedestrian protection hinges only have a locking function and cannot effectively absorb the energy of the headlight rebounding downward.

[0005] To achieve the above objectives, this utility model employs a locking and retaining mechanism for a pedestrian protection hinge in a car, comprising a cover, a pivot, and a connecting rod. One end of the pivot is provided with a ratchet, and one side of the connecting rod is provided with a shaped spring. The cover is hinged to the connecting rod via the pivot and is located on the other side of the connecting rod, and also above the connecting rod. The ratchet is located on one side of the connecting rod, and the shaped spring abuts against the ratchet.

[0006] A friction-reducing bushing is provided between the rotating shaft and the connecting rod.

[0007] The irregularly shaped spring is attached to one side of the connecting rod by an anti-rotation rivet.

[0008] The locking and retaining mechanism for the pedestrian protection hinge of a car further includes a positioning shaft. The cover has a positioning groove, the positioning shaft is embedded in the connecting rod, and the positioning shaft extends into the positioning groove.

[0009] The locking and retaining mechanism for the pedestrian protection hinge of a car further includes a positioning shaft. The cover has a positioning groove, the positioning shaft is embedded in the connecting rod, and the positioning shaft extends into the positioning groove.

[0010] This invention discloses a locking and retaining mechanism for a pedestrian protection hinge in a vehicle. The hood component is hinged to a connecting rod via a pivot and a ratchet. A friction-reducing bushing between the pivot and the connecting rod reduces friction during relative rotation. A shaped spring is fixed to one side of the connecting rod by an anti-rotation rivet. This spring abuts against the ratchet, allowing the hood component to rotate upwards relative to the connecting rod while suppressing downward rotation. Simultaneously, during downward rotation, the shaped spring effectively absorbs the kinetic energy of the hood component through collapse deformation, reducing the oscillation time. Furthermore, the positioning shaft is embedded in the connecting rod and extends into the positioning groove of the hood component. Combined with the design of the anti-detachment ring and positioning end, this further enhances the stability and reliability of the structure, thus simplifying the locking mechanism and increasing kinetic energy absorption while fulfilling the locking function. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional perspective view of the locking and retaining mechanism of the pedestrian protection hinge for automobiles according to this utility model.

[0013] Figure 2 This is a left view of the locking and retaining mechanism for a pedestrian protection hinge for automobiles according to this utility model.

[0014] Figure 3 This is the utility model Figure 2 A cross-sectional view along line AA in the middle.

[0015] Figure 4 This is the utility model Figure 2 A cross-sectional view along the BB line.

[0016] Figure 5 This is the utility model Figure 2 A magnified view of a section at point C.

[0017] Figure 6 This is a right view of the locking and retaining mechanism of the pedestrian protection hinge for automobiles according to this utility model.

[0018] 1-Hair cover, 2-Rotating shaft, 3-Connecting rod, 4-Ratchet, 5-Irregular spring, 6-Friction-reducing bushing, 7-Anti-rotation rivet, 8-Positioning shaft, 9-Positioning groove, 10-Anti-detachment ring, 11-Positioning end. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please see Figures 1 to 6 This utility model provides a locking and retaining mechanism for a pedestrian protection hinge for automobiles, including a cover 1, a rotating shaft 2, and a connecting rod 3. One end of the rotating shaft 2 is provided with a ratchet 4, and one side of the connecting rod 3 is provided with a shaped spring 5. The cover 1 is hinged to the connecting rod 3 through the rotating shaft 2 and is located on the other side of the connecting rod 3 and above the connecting rod 3. The ratchet 4 is located on one side of the connecting rod 3, and the shaped spring 5 abuts against the ratchet 4.

[0021] In this embodiment, the clever combination of the hood component 1, the rotating shaft 2 integrating the features of the ratchet 4, and the connecting rod 3 equipped with the irregular spring 5 achieves the function of allowing only the hood component 1 to flip upward while effectively suppressing downward flipping. This design not only simplifies the structure of the locking mechanism, but also effectively absorbs the kinetic energy of the hood through the collapse deformation of the irregular spring 5 when the hood flips downward, significantly reducing the oscillation time of the hood after the detonator is activated, allowing the hood to stabilize to the designated height in a shorter time, thereby improving the pedestrian protection effect.

[0022] Furthermore, a friction-reducing bushing 6 is provided between the rotating shaft 2 and the connecting rod 3.

[0023] In this embodiment, the friction resistance during relative rotation of the two components is effectively reduced by the anti-friction bushing 6.

[0024] Furthermore, the irregularly shaped spring 5 is mounted on one side of the connecting rod 3 via an anti-rotation rivet 7.

[0025] In this embodiment, this design avoids the functional failure of the irregular spring 5 due to loosening or displacement during operation, ensuring that the locking mechanism can continuously and accurately play its role in suppressing the downward flipping of the head cover and absorbing kinetic energy, thereby improving the stability and safety of the entire pedestrian protection hinge system.

[0026] Furthermore, the locking and retaining mechanism for the pedestrian protection hinge of the vehicle also includes a positioning shaft 8, the cover 1 has a positioning groove 9, the positioning shaft 8 is embedded in the connecting rod 3, and the positioning shaft 8 also extends into the positioning groove 9.

[0027] In this embodiment, during the movement of the head cover 1, the positioning shaft 8 can accurately guide the movement trajectory of the head cover 1, preventing it from deviating or shaking due to external forces, thereby ensuring that the locking mechanism can play its role at the correct time and position, and improving the overall performance and reliability of the pedestrian protection hinge.

[0028] Furthermore, an anti-detachment ring 10 is provided at the end of the positioning shaft 8 away from the connecting rod 3, and a positioning end 11 is provided between the anti-detachment ring 10 and the positioning shaft 8, and the positioning end 11 is located in the positioning groove 9.

[0029] In this embodiment, the physical blocking effect of the anti-detachment ring 10 effectively prevents the positioning shaft 8 from falling off due to vibration or external force during use, thereby ensuring that the positioning shaft 8 can continuously and stably perform its positioning function.

[0030] In this invention, the head cover 1 is hinged to the connecting rod 3, which is equipped with the irregular spring 5, via the rotating shaft 2, which integrates the ratchet 4. This ensures that the anti-friction bushing 6 between the rotating shaft 2 and the connecting rod 3 is correctly installed to reduce friction. Subsequently, the irregular spring 5 is securely fixed to one side of the connecting rod 3 using the anti-rotation rivet 7, so that it tightly abuts against the ratchet 4, achieving the function that the head cover 1 can only flip upwards and is inhibited from flipping downwards. At the same time, the positioning shaft 8 is embedded in the connecting rod 3 and extends into the positioning groove 9 of the head cover 1. In conjunction with the design of the anti-detachment ring 10 and the positioning end 11, the stability and positioning accuracy of the entire mechanism during the movement of the head cover are ensured. When the blaster detonates, the head cover 1 quickly rises to its highest point. At this time, the irregular spring 5 effectively inhibits the downward rebound of the head cover 1 and absorbs its kinetic energy through collapse deformation, so that the head cover stabilizes to the designated height in a shorter time, thereby completing the effective protection of pedestrians.

[0031] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A locking and retaining mechanism for a pedestrian protection hinge in a vehicle, characterized in that, The device includes a hairnet, a pivot, and a connecting rod. One end of the pivot is provided with a ratchet, and one side of the connecting rod is provided with a shaped spring. The hairnet is hinged to the connecting rod via the pivot and is located on the other side of the connecting rod, and also above the connecting rod. The ratchet is located on one side of the connecting rod, and the shaped spring abuts against the ratchet.

2. The locking and retaining mechanism for a pedestrian protection hinge for automobiles as described in claim 1, characterized in that, A friction-reducing bushing is provided between the rotating shaft and the connecting rod.

3. The locking and retaining mechanism for a pedestrian protection hinge for automobiles as described in claim 2, characterized in that, The irregularly shaped spring is attached to one side of the connecting rod by an anti-rotation rivet.

4. The locking and retaining mechanism for a pedestrian protection hinge for automobiles as described in claim 3, characterized in that, The locking and retaining mechanism for the automotive pedestrian protection hinge further includes a positioning shaft, the cover has a positioning groove, the positioning shaft is embedded in the connecting rod, and the positioning shaft also extends into the positioning groove.

5. The locking and retaining mechanism for a pedestrian protection hinge for automobiles as described in claim 4, characterized in that, An anti-detachment ring is provided at the end of the positioning shaft away from the connecting rod. A positioning end is provided between the anti-detachment ring and the positioning shaft, and the positioning end is located in the positioning groove.

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