Locking retaining device, active pedestrian protection hinge and automobile
Patent Information
- Application Number
- CN202522253227.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-24
AI Technical Summary
[0003]然而，目前的行人保护铰链在使用过程中存在以下问题：在爆破器被触发顶起铰链跟发动机罩之后，在极大的能量冲击下，发动机罩向上弹到止挡位后会上下来回剧烈震荡并回落
[0018] Compared with existing technologies, the locking and retaining device of the above-mentioned technical solution can achieve the locking and retaining function through a simple linear spring, a slotted spring pin, and a limiting groove on the hinge arm. It can ensure that the engine hood remains at a sufficient height in the event of a vehicle collision, guaranteeing the effectiveness of pedestrian protection. Firstly, the device is stable and reliable, with extremely fast response speed, and the mechanism itself is not prone to functional failure and has no other safety hazards. Secondly, the device has a simple overall structure, small size, uses common materials, and has stable performance, making it widely applicable to various active pedestrian protection hinges. Thirdly, during the research and development phase, vehicles using this device can undergo static burst testing instead of dynamic burst testing, significantly reducing testing costs for vehicle manufacturers. Fourthly, the device does not damage its own structure during use; it can be reset by moving the slotted spring pin back to its original position, which not only helps reduce maintenance difficulty but also saves costs. In summary, the locking and retaining device provided in this embodiment has a simple overall structure, provides reliable locking and retaining function, and has broad application prospects.
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Figure CN224755575U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive parts technology, and more specifically, to a locking and retaining device, an active pedestrian protection hinge, and an automobile. Background Technology
[0002] Active pedestrian protection hinges on car hoods are a pedestrian protection technology. In the event of a collision, the active pedestrian protection hinge causes the hood to spring up instantly, allowing the pedestrian's head to land on the raised hood. This converts as much kinetic energy as possible into deformation energy, thereby reducing the pedestrian's injury.
[0003] However, current pedestrian protection hinges have the following problems during use: after the blasting device is triggered and lifts the hinge and engine hood, under the enormous energy impact, the engine hood bounces upward to the stop position and then violently swings back and forth before falling back down. This makes it difficult to ensure that the engine hood remains at a sufficient height before a pedestrian's head hits it, thus failing to adequately protect the pedestrian.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] The primary objective of this invention is to provide a locking and retaining device that can provide locking and retaining function for active pedestrian protection hinges, thereby ensuring that the hood can be kept at a sufficient height in the event of a vehicle collision, thus guaranteeing the effectiveness of the pedestrian protection function.
[0006] The second objective of this invention is to provide an active pedestrian protection hinge that, by applying the aforementioned locking and retaining device, can keep the hood at a sufficient height during a vehicle collision, thereby ensuring the effectiveness of the pedestrian protection function.
[0007] The third objective of this invention is to provide a car that, by applying the aforementioned active pedestrian protection hinge, can actively raise its hood upon colliding with a pedestrian, and can ensure that the hood is maintained at a sufficient height, which can effectively reduce pedestrian injury and fully protect pedestrians.
[0008] To achieve the above-mentioned objectives of this utility model, the following technical solution is adopted: This utility model provides a locking and retaining device for an active pedestrian protection hinge. The active pedestrian protection hinge includes a hinge arm, a hinge stationary arm, and an arm cover. One end of the hinge arm is hinged to the hinge stationary arm, and the other end is hinged to a sliding rod. The hinge stationary arm is mounted on a vehicle body. The arm cover includes a side cover plate and a top cover plate connected together. The top cover plate is used to connect to an engine hood. The side cover plate is located on the hinge arm near the hinge stationary arm. A waist hole is provided on one side of the side cover plate, and the sliding rod is slidably disposed within the waist hole. A limit groove is provided on the hinge arm. The device includes: a linear spring, a slotted spring pin, and a rivet. The linear spring is located on the side of the cover plate near the hinge stationary arm. One end of the linear spring is hinged to the cover plate via the rivet, and the other end is fixed to the top of the slotted spring pin. The linear spring is used to apply a force to the slotted spring pin in the direction of the hinge moving arm. The bottom of the slotted spring pin passes through a spring pin hole in the cover plate. Specifically, when the active pedestrian protection hinge is in its normal state, the spring pin hole is not connected to the limiting groove, and the bottom of the slotted spring pin abuts against the hinge arm; when the active pedestrian protection hinge is in the pedestrian protection state, the spring pin hole is connected to the limiting groove, and the bottom of the slotted spring pin passes through the spring pin hole and is located in the limiting groove.
[0009] For example, the linear spring includes a hinged spring end and a fixed spring end; the hinged spring end is connected to the rivet, and the fixed spring end is connected to the slotted spring pin; the hinged spring end extends obliquely upward along the side near the fixed spring end to form a curved structure, and the end of the fixed spring end is connected to the top of the curved structure.
[0010] For example, the head of the slotted spring pin has a slot, and the linear spring is connected to the slotted spring pin through the slot; the diameter of the head of the slotted spring pin is larger than the diameter of the round hole of the spring pin.
[0011] For example, the linear spring is made of stainless steel.
[0012] For example, the hinge arm is hinged to the sliding rod on one side and protrudes towards the side plate of the cover to form a protruding area. The side of the protruding area is in close contact with the side plate of the cover. When the active pedestrian protection hinge is in the normal state, the bottom of the slotted spring pin abuts against the protruding area.
[0013] This utility model also provides an active pedestrian protection hinge, comprising: a hinge arm, a hinge stationary arm, an arm cover, and the aforementioned locking and retaining device; one end of the hinge arm is hinged to the hinge stationary arm, and the other end is hinged to a sliding rod; the hinge stationary arm is mounted on a vehicle body; the arm cover includes a cover side plate and a cover top plate connected together, the cover top plate being used to connect to an engine hood, and the cover side plate being located on the side of the hinge arm closer to the hinge stationary arm; a waist hole is provided on one side of the cover side plate, and the sliding rod is slidably disposed within the waist hole; a limit groove is provided on the hinge arm.
[0014] For example, it also includes a hinged link, one end of which is hinged to the boom cover and the other end of which is hinged to the hinged boom.
[0015] For example, the top of the hinge arm extends away from the side plate of the cover to form a fixing plate, the fixing plate being located below the top plate of the cover; the fixing plate and the top plate of the cover are connected by fixing screws; Specifically, when the active pedestrian protection hinge is in pedestrian protection mode, the fixing screw breaks.
[0016] For example, the top plate of the cover is provided with a pressure relief hole.
[0017] This utility model also provides a car having the above-mentioned active pedestrian protection hinge.
[0018] Compared with existing technologies, the locking and retaining device of the above-mentioned technical solution can achieve the locking and retaining function through a simple linear spring, a slotted spring pin, and a limiting groove on the hinge arm. It can ensure that the engine hood remains at a sufficient height in the event of a vehicle collision, guaranteeing the effectiveness of pedestrian protection. Firstly, the device is stable and reliable, with extremely fast response speed, and the mechanism itself is not prone to functional failure and has no other safety hazards. Secondly, the device has a simple overall structure, small size, uses common materials, and has stable performance, making it widely applicable to various active pedestrian protection hinges. Thirdly, during the research and development phase, vehicles using this device can undergo static burst testing instead of dynamic burst testing, significantly reducing testing costs for vehicle manufacturers. Fourthly, the device does not damage its own structure during use; it can be reset by moving the slotted spring pin back to its original position, which not only helps reduce maintenance difficulty but also saves costs. In summary, the locking and retaining device provided in this embodiment has a simple overall structure, provides reliable locking and retaining function, and has broad application prospects.
[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the locking and retaining device in the normal state according to an embodiment of this application. Figure 2 This is a schematic diagram of the inner structure of the locking and retaining device in the normal state according to an embodiment of this application; Figure 3 This is a schematic diagram of the outer structure of the locking and retaining device in the normal state according to an embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the cross-section obtained by cutting along the AA direction; Figure 5 This is a schematic diagram of the overall structure of the locking and retaining device in the pedestrian protection state according to an embodiment of this application; Figure 6 This is a schematic diagram of the inner structure of the locking and retaining device in the pedestrian protection state according to an embodiment of this application; Figure 7 This is a schematic diagram showing the connection between the boom cover and the hinge boom member according to an embodiment of this application; Figure 8 This is a schematic diagram of the hinge boom component according to an embodiment of this application; Figure 9 This is a schematic diagram of the boom cover component according to an embodiment of this application; Figure 10 This is a schematic diagram of a linear spring according to an embodiment of this application.
[0021] In the diagram: 1. Boom cover; 101. Cover side plate; 102. Cover top plate; 103. Waist hole; 104. Pressure relief hole; 105. First hinge hole; 2. Sliding rod; 3. Linear spring; 4. Slotted spring pin; 5. Rivet; 6. Hinge connecting rod; 7. Fixing screw; 8. Hinge stationary arm; 9. Hinge boom; 901. Connecting rod section; 902. Boom side plate; 903. Fixing plate; 904. Limiting groove; 905. Second hinge hole; 906. Third hinge hole. Detailed Implementation
[0022] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description pertains only to preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described.
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] The inventors discovered that many current active pedestrian protection hinges lack locking and retaining functions, and no other structure exists to lock and retain the hinge after it springs up. After the blaster is triggered and lifts the hinge and hood, under the immense energy impact, the hood springs upward to a stop position and then violently vibrates back and forth before falling back down. This makes it difficult to ensure the hood remains at a sufficient height before a pedestrian's head impacts it, thus failing to adequately protect the pedestrian. Furthermore, for automotive OEMs, using pedestrian protection hinges without locking and retaining functions in dummy crash simulations requires only dynamic crash testing of the entire vehicle, significantly increasing experimental costs during development. Therefore, this application provides a locking and retaining device, an active pedestrian protection hinge, and an automobile. This locking and retaining device provides a locking and retaining function to the active pedestrian protection hinge, ensuring the hood remains at a sufficient height during a collision, guaranteeing the effectiveness of pedestrian protection, and helping to reduce experimental costs during development. The specific structure and implementation principle of this locking and retaining device, active pedestrian protection hinge, and automobile are described in detail below.
[0025] For ease of description, a specific embodiment will be used for illustration below.
[0026] Example Combination Figure 1-10 This embodiment provides a locking and retaining device for an active pedestrian protection hinge. The active pedestrian protection hinge includes a hinge arm 9, a hinge stationary arm 8, and an arm cover 1. One end of the hinge arm 9 is hinged to the hinge stationary arm 8, and the other end is hinged to a sliding rod 2. The hinge stationary arm 8 is mounted on the vehicle body. In this embodiment, the hinge stationary arm 8 is provided with multiple fixing holes (including round holes and U-shaped holes). During actual installation, the hinge stationary arm 8 can be connected to the inside of the vehicle body through these fixing holes, which will not be elaborated further.
[0027] like Figure 8 As shown, the hinged boom 9 of this embodiment includes a connecting rod segment 901 and a boom side plate 902. One end of the connecting rod segment 901 is hinged to the hinged stationary boom 8, and the other end is connected to the boom side plate 902 to form an integral structure. One end of the boom side plate 902 is provided with a second hinge hole 905 for connecting the sliding rod 2.
[0028] like Figure 9 As shown, the boom cover 1 includes a cover side plate 101 and a cover top plate 102 connected to each other. The cover top plate 102 is used to connect the engine hood (in this embodiment, four M8 bolts can be used for connection). The cover side plate 101 is located on the side of the hinge boom 9 near the hinge stationary boom 8. A waist hole 103 is provided on one side of the cover side plate 101, and the sliding rod 2 is slidably disposed in the waist hole 103. A limit groove 904 is provided on the hinge boom 9 (specifically located on the boom side plate 902).
[0029] The locking and retaining device in this embodiment includes: a linear spring 3, a slotted spring pin 4, and a rivet 5. The linear spring 3 is located on the side of the cover plate 101 near the hinge stationary arm 8. One end of the linear spring 3 is hinged to the cover plate 101 by the rivet 5, and the other end is fixed to the top of the slotted spring pin 4. The linear spring 3 is used to apply a force to the slotted spring pin 4 in the direction of the hinge moving arm 9. The bottom of the slotted spring pin 4 passes through the spring pin hole of the cover plate 101.
[0030] In this embodiment, as Figure 1-4 As shown, when the active pedestrian protection hinge is in its normal state, the spring pin hole and the limiting groove 904 are not connected, and the bottom of the slotted spring pin 4 abuts against the hinge arm 9; Figure 5 , 6 As shown, when the active pedestrian protection hinge is in pedestrian protection mode, the spring pin hole is connected to the limiting groove 904, and the bottom of the slotted spring pin 4 passes through the spring pin hole and is located in the limiting groove 904.
[0031] It is understandable that the active pedestrian protection hinge being in normal condition refers to the state of the active pedestrian protection hinge when the vehicle has not been involved in a collision, while the pedestrian protection state refers to the state of the active pedestrian protection hinge when the vehicle has been involved in a collision and the blaster has detonated, causing the hood to be at a certain height.
[0032] Specifically, under normal conditions, the sliding rod 2 is located at the innermost side of the waist hole 103, at which time the top plate 102 of the cover is basically in a relatively horizontal position. When a vehicle collision occurs, the rupture device detonates, the engine hood springs upward, the boom cover 1 moves upward accordingly, and the sliding rod 2 slides outward within the waist hole 103. When the engine hood reaches a sufficient height (at which point the active pedestrian protection hinge is in pedestrian protection mode), the spring pin hole connects with the limiting groove 904, and the slotted spring pin 4 is inserted into the limiting groove 904 under the elastic force of the linear spring 3. When the engine hood falls back, the pin of the slotted spring pin 4 contacts the groove wall of the limiting groove 904 to play a limiting role, thereby ensuring that the engine hood can maintain a sufficient height. After the collision, the bottom of the slotted spring pin 4 can be pulled away from the limiting groove 904 by pulling the linear spring 3, at which point the engine hood can fall back normally.
[0033] The locking and retaining device described above achieves its locking and retaining function through a simple linear spring 3, a slotted spring pin 4, and a limiting groove 904 on the hinge arm 9. This ensures the engine hood remains at a sufficient height during a vehicle collision, guaranteeing the effectiveness of pedestrian protection. Firstly, the device is stable and reliable, with an extremely fast response speed. The mechanism itself is not prone to malfunction and poses no other safety hazards. Secondly, the device has a simple overall structure, small size, uses common materials, and has stable performance, making it widely applicable to various active pedestrian protection hinges. Thirdly, during the research and development phase, vehicles using this device can undergo static burst testing instead of dynamic burst testing, significantly reducing testing costs for vehicle manufacturers. Fourthly, the device does not damage its structure during use; simply moving the slotted spring pin 4 back to its original position resets the device, reducing maintenance difficulty and saving costs. In summary, the locking and retaining device provided in this embodiment has a simple overall structure, provides reliable locking and retaining function, and has broad application prospects.
[0034] like Figure 10 As shown, the linear spring 3 in this embodiment includes a hinged spring end and a fixed spring end; the hinged spring end is connected to a rivet 5, and the fixed spring end is connected to a slotted spring pin 4; the hinged spring end extends upwards at an angle near the fixed spring end to form a curved structure, and the end of the fixed spring end is connected to the top of the curved structure. This linear spring 3 can be machined using a CNC bending machine. By employing a curved structure, the preload of the linear spring 3 can be increased, ensuring the reliability of the locking and retaining function, and it also helps to reduce the wire diameter of the linear spring 3 and decrease the overall volume.
[0035] Continue reading Figure 10The slotted spring pin 4 has a slot at its head, and the linear spring 3 is connected to the slotted spring pin 4 through the slot. The diameter of the head of the slotted spring pin 4 is larger than the diameter of the round hole of the spring pin. By making the diameter of the head of the slotted spring pin 4 larger than the diameter of the round hole of the spring pin, the slotted spring pin 4 can be prevented from falling off accidentally when the active pedestrian protection hinge is in pedestrian protection mode, thus ensuring the effectiveness of the locking function.
[0036] For example, the linear spring 3 is made of stainless steel.
[0037] For example, the side of the hinge arm 9 that is hinged to the sliding rod 2 protrudes towards the side plate 101 of the cover, forming a protruding area. The side of the protruding area is in close contact with the side plate 101 of the cover. When the active pedestrian protection hinge is in its normal state, the bottom of the slotted spring pin 4 abuts against the protruding area. The bottom of the slotted spring pin 4 is blocked by the protruding area, which pushes the linear spring 3 in the opposite direction. At this time, the linear spring 3 is in a bent state. In the normal state, the bottom of the slotted spring pin 4 is flush with the side of the side plate 101 of the cover. This arrangement can prevent the pin of the slotted spring pin 4 from tilting during the relative movement of the boom cover 1 and the hinge arm 9, which would affect the realization of the locking function.
[0038] Continue reading Figure 1-10 This utility model also provides an active pedestrian protection hinge, comprising: a hinge arm 9, a hinge stationary arm 8, an arm cover 1, and the aforementioned locking and retaining device; one end of the hinge arm 9 is hinged to the hinge stationary arm 8, and the other end is hinged to the sliding rod 2; the hinge stationary arm 8 is mounted on the vehicle body; the arm cover 1 includes a cover side plate 101 and a cover top plate 102 connected to each other, the cover top plate 102 is used to connect to the engine hood, and the cover side plate 101 is located on the side of the hinge arm 9 near the hinge stationary arm 8; a waist hole 103 is provided on one side of the cover side plate 101, and the sliding rod 2 is slidably disposed in the waist hole 103; a limit groove 904 is provided on the hinge arm 9. The structure and implementation principle of the locking and retaining device have been described in detail above and will not be repeated here.
[0039] like Figure 7 As shown, the active pedestrian protection hinge also includes a hinge link 6, one end of which is hinged to the boom cover 1, and the other end is hinged to the hinge boom 9. By setting the hinge link 6, the overall structural strength can be increased and the operational reliability of the structure can be improved. In this embodiment, a first hinge hole 105 is provided on the cover side plate 101, and a third hinge hole 906 is provided on the boom side plate 902. The hinge link 6 is connected to the boom cover 1 and the hinge boom 9 through the first hinge hole 105 and the third hinge hole 906, respectively.
[0040] See also Figure 1 , 89. The top of the hinge arm 9 extends away from the side plate 101 of the cover to form a fixing plate 903, which is located below the top plate 102 of the cover. The fixing plate 903 and the top plate 102 of the cover are connected by fixing screws 7. When the active pedestrian protection hinge is in pedestrian protection mode, the fixing screws 7 break. Connecting the hinge arm 9 and the top plate 102 with fixing screws 7 facilitates the positioning and installation of these two structures under normal conditions. In actual use, after a collision, the fixing screws 7 can be replaced for re-fixing, which is simple and cost-effective.
[0041] Continue reading Figure 9 The top plate 102 of the cover is provided with a pressure relief hole 104.
[0042] This embodiment also provides a vehicle having the aforementioned active pedestrian protection hinge. Specifically, the hinge arm is connected to the engine hood, and the hinge stationary arm is connected to the vehicle body. Those skilled in the art will understand the specific connection method, which will not be elaborated further.
[0043] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself. For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases. It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, components, parts, and / or combinations thereof. It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0044] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.
Claims
1. A locking and retaining device, characterized in that, An active pedestrian protection hinge includes a hinge arm, a hinge stationary arm, and an arm cover. One end of the hinge arm is hinged to the hinge stationary arm, and the other end is hinged to a sliding rod. The hinge stationary arm is mounted on a vehicle body. The arm cover includes a side cover plate and a top cover plate connected together. The top cover plate is used to connect to an engine hood. The side cover plate is located on the hinge arm near the hinge stationary arm. A waist hole is provided on one side of the side cover plate, and the sliding rod is slidably disposed within the waist hole. A limit groove is provided on the hinge arm. The device includes: a linear spring, a slotted spring pin, and a rivet. The linear spring is located on the side of the cover plate near the hinge stationary arm. One end of the linear spring is hinged to the cover plate via the rivet, and the other end is fixed to the top of the slotted spring pin. The linear spring is used to apply a force to the slotted spring pin in the direction of the hinge moving arm. The bottom of the slotted spring pin passes through a spring pin hole in the cover plate. Specifically, when the active pedestrian protection hinge is in its normal state, the spring pin hole is not connected to the limiting groove, and the bottom of the slotted spring pin abuts against the hinge arm; when the active pedestrian protection hinge is in the pedestrian protection state, the spring pin hole is connected to the limiting groove, and the bottom of the slotted spring pin passes through the spring pin hole and is located in the limiting groove.
2. The locking and retaining device according to claim 1, characterized in that, The linear spring includes a hinged spring end and a fixed spring end; the hinged spring end is connected to the rivet, and the fixed spring end is connected to the slotted spring pin; the hinged spring end extends obliquely upward along the side close to the fixed spring end to form a curved structure, and the end of the fixed spring end is connected to the top of the curved structure.
3. The locking and retaining device according to claim 1, characterized in that, The head of the slotted spring pin has a slot, and the linear spring is connected to the slotted spring pin through the slot; the diameter of the head of the slotted spring pin is larger than the diameter of the round hole of the spring pin.
4. The locking and retaining device according to claim 1, characterized in that, The linear spring is made of stainless steel.
5. The locking and retaining device according to claim 1, characterized in that, The hinge arm, hinged to the sliding rod, protrudes towards the side plate of the cover to form a protruding area. The side of the protruding area is in close contact with the side plate of the cover. When the active pedestrian protection hinge is in normal condition, the bottom of the slotted spring pin abuts against the protruding area.
6. An active pedestrian protection hinge, characterized in that, include: Hinged boom, hinged stationary boom, boom cover and locking and retaining device as described in any one of claims 1-5; One end of the hinge arm is hinged to the hinge stationary arm, and the other end is hinged to the sliding rod; the hinge stationary arm is mounted on the vehicle body; the arm cover includes a cover side plate and a cover top plate connected together, the cover top plate is used to connect to the engine hood, and the cover side plate is located on the side of the hinge arm closer to the hinge stationary arm; a waist hole is provided on one side of the cover side plate, and the sliding rod is slidably disposed in the waist hole; a limit groove is provided on the hinge arm.
7. The active pedestrian protection hinge according to claim 6, characterized in that, It also includes a hinged link, one end of which is hinged to the boom cover and the other end of which is hinged to the hinged boom.
8. The active pedestrian protection hinge according to claim 6, characterized in that, The top of the hinge arm extends away from the side plate of the cover to form a fixing plate, which is located below the top plate of the cover; the fixing plate and the top plate of the cover are connected by fixing screws; Specifically, when the active pedestrian protection hinge is in pedestrian protection mode, the fixing screw breaks.
9. The active pedestrian protection hinge according to claim 6, characterized in that, The top plate of the cover is provided with a pressure relief hole.
10. A car, characterized in that, The vehicle has an active pedestrian protection hinge as described in any one of claims 6-9.