Hinge assembly and automobile

Abstract

The invention relates to the technical field of automobile accessories, and discloses a hinge assembly and an automobile, the hinge assembly comprises a hinge arm, a first fixing piece and a second fixing piece, the hinge arm and the second fixing piece are arranged on the two sides of the first fixing piece respectively, the hinge arm is connected with the first fixing piece in a pivoted mode, and the first fixing piece is connected with the second fixing piece through a locking piece; when the downward impact force borne by the first fixing piece is larger than the locking force of the locking piece, the first fixing piece moves downwards relative to the second fixing piece in the extending direction of the collapse hole. The first fixing piece and the second fixing piece are connected through the locking piece, when the impact force transmitted by external collision is larger than the locking force of the locking piece, the locking piece loses efficacy immediately, the first fixing piece can move relative to the second fixing piece immediately, and therefore the automobile cover is driven to conduct the buffering sinking action, and the emergency performance of the hinge assembly is improved advantageously; and great harm to pedestrians due to untimely reaction is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile accessories, and in particular to a hinge assembly and an automobile. Background Art

[0002] With the rapid development of automobile industry technology, automobiles have become an indispensable means of transportation in people's daily lives. At the same time, automobile safety has also received more and more attention from people. Automobile safety is divided into occupant protection and pedestrian protection. Occupant protection is the protection for drivers and passengers in the car, and pedestrian protection is the protection for people outside the car. Pedestrian protection is divided into active pedestrian protection and passive pedestrian protection. Among them, passive pedestrian protection generally designs the car's front cover system, front protection system, etc. as structures with low damage values. In order to effectively protect pedestrians, the most common and effective way is to increase the collision buffer space of the car's front cover (engine hood) when pedestrians collide with vehicles to absorb the energy generated during the collision, thereby reducing damage to pedestrians.

[0003] Patent CN113431455A discloses a sinkable buffer hood hinge, which includes an articulated arm, an articulated seat and a locking mechanism. The articulated seat has a collapse space. The articulated arm can sink along the collapse space when the locking mechanism is unlocked, and at the same time drive the front cover of the car to sink, so as to play a role of collapse energy absorption when the front cover of the car is hit. However, in the above technology, the articulated arm needs to unlock the locking structure before the hinge can sink, and it takes a certain amount of time to unlock the locking mechanism, so that it cannot timely realize passive protection of pedestrians. Summary of the invention

[0004] One of the purposes of the present invention is to provide a hinge assembly to solve the problem in the prior art that pedestrians cannot be passively protected in time due to the need to unlock the locking mechanism; the second purpose is to provide a car.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A hinge assembly is applied to a front cover of an automobile, the hinge assembly comprising an articulated arm, a first fixing member and a second fixing member, the articulated arm and the second fixing member being arranged on both sides of the first fixing member; wherein the articulated arm is pivotally connected to the first fixing member, and the first fixing member and the second fixing member are connected via a locking member; one of the first fixing member and the second fixing member has a mounting hole, and the other has a collapse hole extending from top to bottom along the height direction of the vehicle body; the locking member is passed through the mounting hole and the collapse hole, and applies a locking force to the first fixing member and the second fixing member, so that the first fixing member and the second fixing member are fixedly connected; when the downward impact force on the first fixing member is greater than the locking force of the locking member, the first fixing member moves downward relative to the second fixing member along the extension direction of the collapse hole.

[0007] According to the above technical means, the articulated arm is connected between the first fixing member and the front cover of the car, and the articulated arm can transfer the impact force on the front cover of the car to the first fixing member. The first fixing member and the second fixing member are provided with a mounting hole and a collapse hole, and the locking member is provided between the mounting hole and the collapse hole, and the collapse hole provides a moving space for the locking member. When the impact force on the first fixing member is greater than the locking force of the locking member, the locking effect of the locking member on the first fixing member and the second fixing member is immediately invalidated, so that the locking member moves relative to the collapse hole, and the first fixing member moves downward relative to the second fixing member at the first time, and the front cover of the car sinks with the first fixing member to achieve collision buffering, thereby timely realizing passive protection for pedestrians, reducing the degree of damage caused by the front cover of the car to people outside the car, and thus improving the passive safety index of the car.

[0008] Furthermore, the locking member includes a bolt and a nut, wherein the bolt passes through the mounting hole and the collapse hole and is threadedly connected to the nut.

[0009] According to the above technical means, the bolt and the nut are threadedly matched so that the two are respectively in contact with the surface of the first fixing member and the surface of the second fixing member. On the one hand, the first fixing member and the second fixing member can be fixedly connected by the bolt and the nut to ensure the stability of the connection. On the other hand, when the first fixing frame moves relative to the second fixing member, the first fixing member or the second fixing member rubs against the bolt or the nut to further offset the collision force transmitted from the first fixing member, thereby improving the buffering and energy absorption effect of the hinge assembly.

[0010] Furthermore, at least two shrinkage holes are provided, at least two shrinkage holes are arranged parallel to each other, and the mounting holes are arranged in one-to-one correspondence with the shrinkage holes.

[0011] According to the above technical means, the locking member fixes and assembles the first fixing member and the second fixing member through multiple groups of shrinkage holes and installation holes to ensure the installation accuracy between the two. At the same time, the shrinkage holes are arranged in parallel to improve the guiding stability of the shrinkage holes, ensuring that the first fixing member can move smoothly along the extension direction of the shrinkage holes.

[0012] Furthermore, reinforcing ribs are provided between adjacent shrinkage holes, and the reinforcing ribs are arranged along the extending direction of the shrinkage holes.

[0013] According to the above technical means, the structural strength of the first fixing member is improved to stably support the articulated arm and the automobile front cover connected to the articulated arm.

[0014] Furthermore, the first fixing member has a first connecting portion, the first connecting portion is hinged to the articulated arm, and the first connecting portion deviates from the second fixing member to provide an escape space for the articulated arm to rotate.

[0015] According to the above technical means, the first connecting portion is arranged to deviate from the second fixing member, so that the first fixing member can provide a rotation space for the articulated arm, thereby preventing the second fixing member from interfering with the rotation of the articulated arm.

[0016] Furthermore, the first fixing member has a second connecting portion, the second connecting portion is connected to the second fixing member via the locking member, and the second connecting portion is in close contact with the second fixing member.

[0017] According to the above technical means, the second connecting part is fitted with the second fixing part. When the first fixing part moves relative to the second fixing part, the first fixing part and the second fixing part rub against each other, further offsetting the collision force transmitted from the first fixing part, thereby improving the buffering and energy absorption effect of the car hood.

[0018] Furthermore, one end of the articulated arm hinged to the first fixing member has a limiting protrusion, the first fixing member has a limiting portion, and the limiting protrusion cooperates with the limiting portion to limit the rotation angle of the articulated arm.

[0019] According to the above technical means, the rotation angle of the articulated arm is limited to ensure that the opening angle of the car hood meets people's daily use needs.

[0020] Furthermore, the first fixing member has a first positioning hole, the second fixing member has a second positioning hole, and the first positioning hole is positioned and matched with the first positioning hole so that the first fixing member and the second fixing member are positioned and assembled.

[0021] According to the above technical means, the difficulty of assembling the first fixing member and the second fixing member is reduced, and the assembly accuracy between the first fixing member and the second fixing member is improved.

[0022] Furthermore, the side edge of the articulated arm and the side edge of the second fixing member are both provided with reinforcing flanges.

[0023] According to the above technical means, the structural strength of the edge of the articulated arm and the structural strength of the second fixing member are improved.

[0024] A car comprises a car hood and a car body, wherein the car hood is openably and closably connected to the car body via the hinge assembly.

[0025] According to the above technical means, when a car is hit by a pedestrian, the front cover of the car can sink in time to reduce the damage to the pedestrian and improve the passive safety performance of the car.

[0026] Beneficial effects of the present invention:

[0027] (1) The present invention connects the first fixing member and the second fixing member through a locking member. When the impact force transmitted by the external collision is greater than the locking force of the locking member, the locking member immediately fails, and the first fixing member can immediately move relative to the second fixing member, thereby driving the automobile hood to perform a buffering and sinking action, which is beneficial to improving the emergency performance of the hinge assembly and the reaction speed of the hinge assembly, which is beneficial to reducing the damage to pedestrians;

[0028] (2) The present invention provides a collapse hole on the first fixing member or the second fixing member, so that the first fixing member can move relative to the second fixing member, thereby providing a collapse space for the automobile hood to sink, which is beneficial for the automobile hood to achieve collapse energy absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a hinge assembly according to an embodiment of the present invention;

[0030] Figure 2 is an exploded schematic diagram of a hinge assembly according to an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the working mode of the hinge assembly according to an embodiment of the present invention;

[0032] Figure 4 for Figure 3 AA section diagram in;

[0033] Figure 5 is a schematic structural diagram of a first fixing member according to an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of a second fixing member according to an embodiment of the present invention;

[0035] Figure 7 is a schematic structural diagram of an articulated arm according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of a hinge assembly according to an embodiment of the present invention being assembled on a car.

[0037] Description of reference numerals:

[0038] 100-articulated arm, 101-rivet joint, 102-bushing, 103-second fixing hole, 104-second pivot hole, 110-limiting protrusion, 120-support rod mounting ball head, 123-reinforced flange, 200-first fixing member, 210-mounting hole, 220-first positioning hole, 230-first connecting part, 231-second pivot hole, 240-limiting part, 250-second connecting part, 300-second fixing member, 301-collapse hole, 310-reinforcement rib, 320-second positioning hole, 330-first fixing hole, 400-locking member, 410-bolt, 420-nut, 600-car hood, 700-car body. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0040] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects and do not limit the number of objects. For example, the first object can be one or more. It should be understood that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. In addition, it should be noted that if terms such as "upper", "lower", "inside", and "outside" indicate orientation or positional relationships, they are based on the orientation or positional relationships shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0042] This embodiment proposes a hinge assembly, and the front cover 600 of the car is connected to the main body 700 of the car in an openable and closable manner through the hinge assembly. The front cover 600 of the car is fixed to the main body 700 of the car through the hinge assembly, and the front cover 600 of the car is opened and closed through the hinge assembly, and the front cover 600 of the car is kept moving within a reasonable opening angle. At the same time, the hinge assembly must ensure that it has sufficient strength to support and position the front cover 600 of the car, so as to facilitate the inspection and maintenance of parts in the cabin.

[0043] See also Figures 1 to 4 The hinge assembly includes an articulated arm 100, a first fixing member 200 and a second fixing member 300. The articulated arm 100 and the second fixing member 300 are respectively arranged on both sides of the first fixing member 200; wherein the articulated arm 100 is pivotally connected to the first fixing member 200, and the first fixing member 200 and the second fixing member 300 are connected by a locking member 400. The articulated arm 100 is arranged between the front cover 600 of the automobile and the first fixing member 200, and the articulated arm 100 can pivot relative to the first fixing member 200, thereby driving the front cover 600 of the automobile to rotate. The first fixing member 200 and the second fixing member 300 are connected by a locking member 400, and the second fixing member 300 is fixedly installed on the automobile body 700 to support and fix the entire hinge assembly.

[0044] One of the first fixing member 200 and the second fixing member 300 has a mounting hole 210, and the other has a collapse hole 301 extending from top to bottom along the height direction of the vehicle body; the locking member 400 is arranged through the mounting hole 210 and the collapse hole 301, and applies a locking force to the first fixing member 200 and the second fixing member 300, so that the first fixing member 200 and the second fixing member 300 are fixedly connected. When the downward impact force on the first fixing member 200 is greater than the locking force of the locking member 400, the first fixing member 200 moves downward relative to the second fixing member 300 along the extension direction of the collapse space.

[0045] The collapse hole 301 provides a movement space for the first fixing member 200 to move downward, that is, provides a buffer space for the front cover 600 of the automobile. The extension direction of the collapse hole 301 is the direction in which the front cover 600 of the automobile sinks when facing an impact. Taking the automobile as a reference, in the height direction of the vehicle body, the collapse hole 301 extends vertically downward, or extends straight or curvedly obliquely downward to the rear of the vehicle body. The locking member 400 is limitedly installed in the installation hole 210, and the collapse hole 301 does not limit the locking member 400 in the extension direction of the collapse hole 301. In this way, when the locking member 400 fails to lock, the locking member 400 can move relative to the collapse hole 301. The locking member 400 is located at a certain position of the collapse hole 301, and fastens the first fixing member 200 and the second fixing member 300 at this position. When the downward impact force on the first fixing member 200 is greater than the locking force of the locking member 400, the locking member 400 immediately fails to lock, so that the first fixing member 200 can immediately move downward under the guidance of the collapse hole 301, thereby coping with the impact of pedestrians on the front cover 600 of the car.

[0046] It should be noted that the locking member 400 needs to ensure that the hinge assembly can meet the daily use requirements of the car cover, and also ensure that when the front cover 600 of the car is impacted by pedestrians, the locking function of the locking member is immediately in a failed state. The locking force required by the locking member 400 in daily use is much smaller than the impact force of the front cover 600 of the car being impacted by pedestrians. Therefore, the locking force of the locking member 400 can be selected by means of simulation test experiments so that the locking member 400 can meet the use requirements.

[0047] Optional, see Figures 1 to 4 In order to facilitate processing and assembly, the first fixing member 200 and the second fixing member 300 are set as a plate structure, the first fixing member 200 is arranged vertically, and the articulated arm 100 and the second fixing member 300 are arranged on both sides of the thickness direction of the first fixing member 200. Among them, the first fixing member 200 is a straight plate structure, and the second fixing member 300 is an L-shaped plate structure, and both can be stamped from metal plates. Exemplarily, a mounting hole 210 is set on the first fixing member 200, and a shrinkage hole 301 is set on the second fixing member 300. The shrinkage hole 301 has a certain length and needs to occupy a certain space. By setting the shrinkage hole 301 on the second fixing member 300, the volume and mass of the first fixing member 200 can be effectively reduced, thereby increasing the movable space of the first fixing member 200 during the sinking movement. Preferably, the shrinkage hole 301 is a strip hole with a length of 60 mm to meet the relevant regulations and standards.

[0048] Furthermore, a first pivot hole is formed on the first fixing member 200, and a second pivot hole 104 is formed at the end of the articulated arm 100. The first fixing member 200 and the articulated arm 100 are pivotally connected via a rotating shaft or a rivet joint 101. For example, the rivet joint 101 is inserted into the first pivot hole and the second pivot hole 104, and a bushing 102 is added to reinforce the pivoting part. The second fixing member 300 is bent at the bottom to form an L-shaped structure, and a first fixing hole 330 is formed at the bottom. The second fixing member 300 is bolted to the automobile body 700 through the first fixing hole 330. Please refer to Figure 7 The articulated arm 100 is provided with a second fixing hole 103 on the side away from the first fixing piece 200, and the articulated arm 100 is bolted to the car hood 600 through the second fixing hole 103. In addition, a strut mounting ball head 120 is installed at one end of the articulated arm 100 away from the first fixing piece 200, and the strut mounting ball head 120 is used to connect the strut. The strut pushes the strut mounting ball head 120 to push the car hood 600 to open and close.

[0049] The locking member 400 applies a locking force to the first fixing member 200 and the second fixing member 300 respectively, so as to achieve a fixed connection between the two. The locking member 400 includes but is not limited to a combination of fasteners such as bolts, studs, nuts, rivets, washers, etc.

[0050] In some embodiments of this application, please refer to Figure 1 and Figure 2 The locking member 400 includes a bolt 410 and a nut 420. The bolt 410 is inserted into the mounting hole 210 and the collapse hole 301 and is threadedly connected with the nut 420. The bolt 410 and the nut 420 have a simple structure and are easy to install. The first fixing member 200 and the second fixing member 300 are clamped by a screw pair, which reduces the difficulty of installing the first fixing member 200 and the second fixing member 300. When the hinge assembly is installed, the torque generated between the nut 420 and the bolt 410 makes the first fixing member 200 and the second fixing member 300 fit tightly at the connection, thereby achieving fixed connection. Among them, the bolt 410 and the nut 420 are respectively abutted on the first fixing member 200 and the second fixing member 300. When the first fixing member 200 moves downward relative to the second fixing member 300, the nut 420 and the bolt 410 will generate friction with the first fixing member 200 or the second fixing member 300, thereby absorbing part of the collision energy, thereby improving the collapse energy absorption effect of the hinge assembly.

[0051] In addition, the first fixing member 200 and the second fixing member 300 are connected by bolts, and there is no need to design and process the locking member 400 separately, which reduces the difficulty of producing the locking member 400 and facilitates the later maintenance and replacement of the locking member 400. Moreover, through the cooperation between the bolt 410 and the nut 420, after the hinge assembly has been buffered and absorbed energy once, the bolt 410 and the nut 420 can still be reused and restored to the initial locking position, greatly reducing the later maintenance costs.

[0052] Optionally, in order to enhance the connection stability between the first fixing member 200 and the second fixing member 300 , a gasket, anti-loosening glue, etc. are further provided between the bolt 410 and the nut 420 .

[0053] In some embodiments of this application, please refer to Figure 5 At least two collapse holes 301 are provided, and the at least two collapse holes 301 are arranged parallel to each other, and the mounting holes 210 and the collapse holes 301 are arranged in a one-to-one correspondence.

[0054] At least two collapse holes 301 are arranged in parallel on the first fixing member 200 or the second fixing member 300, so that when the first fixing member 200 moves relative to the second fixing member 300, the multiple collapse holes 301 play a guiding role at the same time, avoiding the first fixing member 200 from rotating around the locking member 400 and becoming skewed. Compared with a single collapse hole 301, the situation where the first fixing member 200 is stuck in the collapse hole 301 due to the collapse hole 301 being too inclined in the impact direction can be reduced, which is beneficial to improving the structural stability of the hinge assembly and improving the collapse energy absorption effect of the hinge assembly. Specifically, the second fixing member 300 is provided with two collapse holes 301, which can play a guiding role while avoiding excessive increase in the occupied volume of the second fixing member 300. It should be noted that one mounting hole 210 is correspondingly arranged for one shrinkage hole 301, so that the locking member 400 can be fastened in each group of hole positions, and the position of each mounting hole 210 corresponds to the initial installation position of the locking member 400 on the shrinkage hole 301, so that multiple locking members 400 can move the same distance relative to their corresponding shrinkage holes 301, thereby allowing the first fixing member 200 to move smoothly to the predetermined sinking position.

[0055] In some embodiments of this application, please refer to Figure 5 , reinforcing ribs 310 are provided between adjacent collapse holes 301, and the reinforcing ribs 310 are provided along the extending direction of the collapse holes 301. It can be understood that the reinforcing ribs 310 are provided between adjacent collapse holes 301, which can enhance the structural strength of the first fixing member 200 or the second fixing member 300 provided with the collapse holes 301, and avoid excessive reduction of the structural strength thereof due to the provision of the collapse holes 301.

[0056] In some embodiments of this application, please refer to Figure 6 The first fixing member 200 has a first connecting portion 230, which is hinged to the articulated arm 100, and the first connecting portion 230 is offset from the second fixing member 300 to provide an escape space for the articulated arm 100 to rotate. The first connecting portion 230 is connected to the articulated end of the articulated arm 100. By offsetting the first connecting portion 230 from the second fixing frame, the articulated end of the articulated arm 100 is not interfered by other structures during the rotation process, thereby ensuring the normal rotation of the articulated arm 100. Specifically, the first connecting portion 230 is arranged at the upper end of the first fixing member 200, which is conducive to increasing the sinking length of the articulated end of the articulated arm 100, and further conducive to increasing the collapse energy absorption effect of the hinge assembly.

[0057] In some embodiments of this application, please refer to Figure 6The first fixing member 200 has a second connecting portion 250, and the second connecting portion 250 is connected to the second fixing member 300 through a locking member 400, and the second connecting portion 250 is in close contact with the second fixing member 300. Since the second connecting portion 250 is in close contact with the second fixing member 300, when the first fixing member 200 slides relative to the second fixing member 300, the second connecting portion 250 and the second fixing member 300 rub against each other, thereby absorbing a portion of the collision energy, further improving the collapse energy absorption effect of the hinge assembly.

[0058] Optional, see Figure 6 The first fixing member 200 includes a first connecting plate and a second connecting plate connected to each other, the first connecting plate is located above the second connecting plate, the first connecting plate is offset from the second fixing member 300 relative to the second connecting plate, the second connecting plate is attached to the second fixing member 300 and connected through a locking member 400, wherein the first connecting plate is the first connecting portion 230, and the second connecting plate is the second connecting portion 250. In this way, the first fixing member 200 and the second fixing member 300 are in surface contact so that there is a larger friction area between the two, thereby increasing the energy absorption effect of the hinge assembly. Preferably, the width of the second connecting plate is the same as the width of the second fixing member 300, so that the second connecting plate and the second fixing plate have a larger contact area in the width direction thereof, thereby increasing the energy absorption during the relative movement of the two. In the embodiment of the present application, since the first fixing member 200 has a first connecting portion 230 and a second connecting portion 250, and the two are arranged separately, and are respectively connected to the articulated arm 100 and the second fixing member 300 through the first connecting portion 230 and the second connecting portion 250, the hinged portion and the locking portion of the first fixing member 200 are separated, which is beneficial to ensure the hinged connection strength between the articulated arm 100 and the second fixing member 300, and the connection strength between the first fixing member 200 and the second fixing member 300, thereby improving the service life of the first fixing member 200.

[0059] In some embodiments of this application, please refer to Figure 6 and Figure 7 One end of the articulated arm 100 hinged to the first fixing member 200 has a limiting protrusion 110, and the first fixing member 200 has a limiting portion 240. The limiting protrusion 110 and the limiting portion 240 are limited to limit the rotation angle of the articulated arm 100. Due to the limiting cooperation between the limiting protrusion 110 and the limiting portion 240, the rotation angle of the articulated arm 100 is limited.

[0060] Optionally, the outer circumference of part of the first fixing member 200 is in an arc shape, and the arc-shaped area corresponds to the rotation range of the automobile front cover 600 in daily use. The limiting portion 240 is provided on the rotation path of the first fixing member 200 corresponding to the limiting protrusion 110 to limit the limiting protrusion 110. The end of the articulated arm 100 is bent to form the limiting protrusion 110, and rotates along the outer circumferential arc-shaped contour of the first fixing member 200, so that the limiting protrusion 110 and the limiting portion 240 are limitedly matched to achieve limited cooperation.

[0061] In some embodiments of the present application, the first fixing member 200 has a first positioning hole 220, and the second fixing member 300 has a second positioning hole 320. The first positioning hole 220 is positioned and matched with the first positioning hole 220, so that the first fixing member 200 and the second fixing member 300 are positioned and assembled. When the first fixing member 200 and the second fixing frame are installed, the two are positioned by a clamp, and then the bolts 410 of the two are connected together through the first positioning hole 220 and the second positioning hole 320, which is convenient for the subsequent installation of the locking member 400 and helps to ensure the installation accuracy.

[0062] In some embodiments of the present application, the side of the articulated arm 100 and the side of the second fixing member 300 are both provided with a reinforcing flange 123. It can be understood that the reinforcing flange 123 is conducive to improving the structural strength of the edge of the articulated arm 100 and the structural strength of the edge of the second fixing member 300, thereby improving the rigidity of the articulated arm 100 and the rigidity of the second fixing member 300.

[0063] The present application also proposes a car, including a car hood 600 and a car body 700, wherein the car hood 600 is openably connected to the car body 700 through the hinge assembly. Therefore, the car of the embodiment of the present application has the beneficial effects of the hinge assembly of any of the above schemes, which will not be repeated here. It can be seen from the above analysis that the car of the embodiment of the present application can respond to pedestrian collisions immediately through the hinge assembly, thereby improving the passive safety performance of the car.

[0064] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A hinge assembly, applied to a front cover of an automobile (600), characterized in that: The hinge assembly comprises an articulated arm (100), a first fixing member (200) and a second fixing member (300), wherein the articulated arm (100) and the second fixing member (300) are respectively arranged on both sides of the first fixing member (200); wherein: The hinged arm (100) is pivotally connected to the first fixing member (200), and the first fixing member (200) is connected to the second fixing member (300) via a locking member (400); one of the first fixing member (200) and the second fixing member (300) has a mounting hole (210), and the other has a collapse hole (301) extending from top to bottom along the height direction of the vehicle body; The locking member (400) is inserted into the mounting hole (210) and the collapse hole (301), and applies a locking force to the first fixing member (200) and the second fixing member (300), so that the first fixing member (200) and the second fixing member (300) are fixedly connected; When the downward impact force applied to the first fixing member (200) is greater than the locking force of the locking member (400), the first fixing member (200) can move downward relative to the second fixing member (300) along the extension direction of the collapse hole (301).

2. The hinge assembly according to claim 1, characterized in that: The locking member (400) comprises a bolt (410) and a nut (420); the bolt (410) is inserted through the mounting hole (210) and the collapse hole (301) and is threadedly connected to the nut (420).

3. The hinge assembly according to claim 1, characterized in that: At least two of the shrinkage holes (301) are provided, and at least two of the shrinkage holes (301) are arranged parallel to each other, and the mounting holes (210) are arranged in a one-to-one correspondence with the shrinkage holes (301).

4. The hinge assembly according to claim 3, characterized in that: Reinforcing ribs (310) are provided between adjacent collapse holes (301), and the reinforcing ribs (310) are arranged along the extending direction of the collapse holes (301).

5. The hinge assembly according to claim 1, characterized in that: The first fixing member (200) has a first connecting portion (230), the first connecting portion (230) is hinged to the articulated arm (100), and the first connecting portion (230) deviates from the second fixing member (300) to provide an escape space for the articulated arm (100) to rotate.

6. The hinge assembly according to claim 1, characterized in that: The first fixing member (200) has a second connecting portion (250), the second connecting portion (250) is connected to the second fixing member (300) via the locking member (400), and the second connecting portion (250) is in close contact with the second fixing member (300).

7. The hinge assembly according to claim 1, characterized in that: One end of the articulated arm (100) hinged to the first fixing member (200) has a limiting protrusion (110), and the first fixing member (200) has a limiting portion (240). The limiting protrusion (110) and the limiting portion (240) are limitedly matched to limit the rotation angle of the articulated arm (100).

8. The hinge assembly according to any one of claims 1 to 7, characterized in that: The first fixing member (200) has a first positioning hole (220), the second fixing member (300) has a second positioning hole (320), and the first positioning hole (220) is positioned and matched with the first positioning hole (220) so that the first fixing member (200) and the second fixing member (300) are positioned and assembled.

9. The hinge assembly according to claim 8, characterized in that: The side edge of the hinged arm (100) and the side edge of the second fixing member (300) are both provided with a reinforcing flange (123).

10. A car, comprising a car bonnet (600) and a car body (700), characterized in that: The automobile front cover (600) is openably and closably connected to the automobile body (700) via a hinge assembly as described in any one of claims 1 to 9.

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