Engine hood hinge mechanism and vehicle with same

Abstract

The invention provides an engine hood hinge mechanism and a vehicle with the same, and relates to the technical field of engine hood hinges. The engine hood hinge mechanism comprises a hinge seat connected with a vehicle body and provided with a stop part; the engine hood is rotationally connected with the hinge seat, so that the engine hood has an opening position and a closing position, and the engine hood is provided with a first limiting part and a second limiting part; the pawl is movably connected with the engine hood, part of the pawl is located between the first limiting part and the second limiting part, and in the process that the engine hood is operated to be switched between the opening position and the closing position, the pawl can rotate relative to the engine hood so that the pawl can have the initial position contained in the inner side of the engine hood; and the pawl is provided with a working position which is propped against the stop part. By means of the technical scheme, the operation space of the cabin can be larger, and the problem that parts of the cabin are inconvenient to maintain is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine hood hinges, and more particularly, to an engine hood hinge mechanism and a vehicle having the same. Background Art

[0002] There are generally two forms of support for automobile engine hoods. The first is a mechanical strut, which needs to be taken by hand and supported during use, and the operation is cumbersome. The second is a gas strut, which is prone to air leakage and oil leakage, and cannot support the engine hood after failure. Both of the above struts will block the engine compartment components after support, which is inconvenient for the maintenance of the engine compartment components.

[0003] In view of the problem that the above struts block the engine compartment components after support and are inconvenient for the maintenance of the engine compartment components, no effective solution has been proposed yet. Summary of the Invention

[0004] The main object of the present invention is to provide an engine hood hinge mechanism and a vehicle having the same, so as to solve the technical problems of cumbersome operation, unstable support and blocking of engine compartment components by the existing support structure of the engine hood.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an engine hood hinge mechanism, including: a hinge seat connected to the vehicle body, and a stop portion is provided on the hinge seat; an engine hood rotatably connected to the hinge seat so that the engine hood has an open position and a closed position, and a first limit portion and a second limit portion are provided on the engine hood; a pawl movably connected to the engine hood, and part of the pawl is located between the first limit portion and the second limit portion. During the process of operating the engine hood to switch between the open position and the closed position, the pawl can rotate relative to the engine hood so that the pawl has an initial position received inside the engine hood and a working position where the pawl abuts against the stop portion. When the pawl is in the initial position, the engine hood is in the closed position, and when the pawl is in the working position, the engine hood is in the open position.

[0006] Further, the engine hood hinge mechanism further includes: an elastic member, the first end of the elastic member is connected to the engine hood through a first connecting column provided on the engine hood, the second end of the elastic member is connected to the middle of the pawl through a second connecting column provided on the pawl, the pawl is rotatably connected to the engine hood through a rotating shaft provided on the engine hood, the rotating shaft is located between the first connecting column and the second connecting column, and the first connecting column is located on one side of the tail of the pawl.

[0007] Further, the stop portion is a convex structure provided on the hinge seat, and a notch structure matching the head of the pawl is provided on the surface of the convex structure, and the notch structure is an L-shaped notch.

[0008] Further, during the opening process of the engine hood, the pawl has a first position in contact with the surface of the stop portion, and a second position in which, after contacting the surface of the stop portion, it rotates around the engine hood and disengages from the surface of the stop portion. After passing through the second position, the pawl switches to the working position.

[0009] Further, the first limiting portion is located below the second limiting portion. When the pawl is in the initial position, the pawl contacts the first limiting portion.

[0010] Further, a fourth limiting portion is provided on the hinge seat. The vertical height of the fourth limiting portion is greater than the vertical height of the stop portion. After the pawl is in the working position and the engine hood continues to open in the opening direction, the pawl successively has a third position in contact with the fourth limiting portion, and a fourth position in which, after disengaging from the fourth limiting portion, it contacts the second limiting portion. After the pawl reaches the fourth position, the engine hood is operated to rotate downward to the closed position.

[0011] Further, after the pawl reaches the fourth position, the engine hood is operated to continue opening until the pawl moves to a fifth position in contact with the fourth limiting portion again. When the pawl is in the fifth position, the engine hood is operated to rotate downward to the closed position.

[0012] Further, a third limiting portion is provided on the hinge seat. The vertical height of the third limiting portion is less than the vertical height of the stop portion. During the closing process of the engine hood, the pawl has a sixth position in contact with the third limiting portion. After passing through the sixth position, the pawl switches to a seventh position in contact with the second limiting portion. When the pawl is in the seventh position, the engine hood is in the closed position.

[0013] Further, the elastic member is a spring.

[0014] According to another aspect of the present invention, a vehicle is provided. The vehicle has an engine hood hinge mechanism, and the engine hood hinge mechanism is the above-mentioned engine hood hinge mechanism.

[0015] By applying the technical solution of the present invention, the hinge seat is connected to the vehicle body, and a stop portion is provided on the hinge seat; the engine hood is rotatably connected to the hinge seat, and a first limiting portion and a second limiting portion are provided on the engine hood; the pawl is movably connected to the engine hood. During the process of operating the engine hood to switch between the open position and the closed position, the pawl can be rotated relative to the engine hood so that the pawl has an initial position received inside the engine hood and a working position in which the pawl abuts against the stop portion. The pawl can be limited between the working position and the initial position by the stop portion, the first limiting portion, and the second limiting portion. The traditional strut structure that blocks the engine compartment is cancelled, making the working space in the engine compartment larger and solving the problem of inconvenience during the maintenance of engine compartment components. Description of the Drawings

[0016] The accompanying drawings of the specification, which form a part of the present application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural view of a first embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0018] Figure 2 A schematic structural view of a second embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0019] Figure 3 A schematic structural view of a third embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0020] Figure 4 A schematic structural view of a fourth embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0021] Figure 5 A schematic structural view of a fifth embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0022] Figure 6 A schematic structural view of a sixth embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0023] Figure 7 A schematic structural view of a seventh embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0024] Figure 8 A schematic structural view of an eighth embodiment of the engine hood hinge mechanism according to the present invention is shown;

[0025] Figure 9 A schematic structural view of a ninth embodiment of the engine hood hinge mechanism according to the present invention is shown.

[0026] Among them, the above-mentioned drawings include the following reference numerals:

[0027] 1, hinge seat; 11, stop portion; 12, third limiting portion; 13, fourth limiting portion;

[0028] 2, engine hood; 21, first limiting portion; 22, second limiting portion; 23, first connecting column; 24, rotating shaft;

[0029] 3, pawl; 31, second connecting column;

[0030] 4, elastic member. Detailed embodiments

[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0034] Now, the exemplary embodiments according to the present application will be described in more detail with reference to the drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present application is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their description will be omitted.

[0035] Combined with Figures 1 to 9 As shown, according to a specific embodiment of the present application, an engine hood hinge mechanism is provided.

[0036] Specifically, the engine hood hinge mechanism includes a hinge seat 1, an engine hood 2, and a pawl 3. The hinge seat 1 is connected to the vehicle body, and a stop portion 11 is provided on the hinge seat 1. The engine hood 2 is rotatably connected to the hinge seat 1 so that the engine hood 2 has an open position and a closed position. The engine hood 2 is provided with a first limiting portion 21 and a second limiting portion 22. The pawl 3 is movably connected to the engine hood 2, and a part of the pawl 3 is located between the first limiting portion 21 and the second limiting portion 22. During the process of operating the engine hood 2 to switch between the open position and the closed position, the pawl 3 can rotate relative to the engine hood 2 so that the pawl 3 has an initial position received inside the engine hood 2 and a working position where the pawl 3 abuts against the stop portion 11. When the pawl 3 is in the initial position, the engine hood 2 is in the closed position, and when the pawl 3 is in the working position, the engine hood 2 is in the open position.

[0037] Applying the technical solution of this embodiment, the hinge seat 1 is connected to the vehicle body, and a stop portion 11 is provided on the hinge seat 1; the engine hood 2 is rotatably connected to the hinge seat 1, and the engine hood 2 is provided with a first limiting portion 21 and a second limiting portion 22; the pawl 3 is movably connected to the engine hood 2, and during the process of operating the engine hood 2 to switch between the open position and the closed position, the pawl 3 can rotate relative to the engine hood 2 so that the pawl 3 has an initial position received inside the engine hood 2 and a working position where the pawl 3 abuts against the stop portion 11. The pawl 3 can be limited between the working position and the initial position by the stop portion 11, the first limiting portion 21, and the second limiting portion 22, eliminating the occlusion of the engine compartment by the traditional strut structure, making the working space in the engine compartment larger, and solving the problem of inconvenience during the maintenance of engine compartment components.

[0038] Further, the engine hood hinge mechanism further includes an elastic member 4. The first end of the elastic member 4 is connected to the engine hood 2 through a first connecting column 23 provided on the engine hood 2, and the second end of the elastic member 4 is connected to the middle of the pawl 3 through a second connecting column 31 provided on the pawl 3. The pawl 3 is rotatably connected to the engine hood 2 through a rotating shaft 24 provided on the engine hood 2. The rotating shaft 24 is located between the first connecting column 23 and the second connecting column 31, and the first connecting column 23 is located on one side of the tail of the pawl 3.

[0039] It should be noted that the elastic member 4 is always in a stretched state. The setting of the elastic member 4 provides power for the rotation of the pawl 3. During the process of the first connecting column 23 rotating together with the engine hood 2, the elastic member 4 undergoes elastic deformation due to the force, and the pawl 3 rotates around the rotating shaft 24 under the action of the restoring force of the elastic member 4, thereby controlling the rotation direction and rotation amplitude of the pawl 3 around the rotating shaft 24.

[0040] Specifically, the stop portion 11 is a convex structure protruding from the hinge seat 1. The surface of the convex structure of the stop portion 11 is provided with a notch structure that cooperates with the head of the pawl 3, and the notch structure is an L-shaped notch. The notch structure is designed to be L-shaped, reserving sufficient passage space for the engagement and disengagement of the pawl 3.

[0041] Those skilled in the art should understand that the stop portion 11, the limiting portion, and the connecting column can all be convex structures provided on the hinge seat 1 or the engine hood 2. The hinge seat 1 and the engine hood 2 are connected at intervals around the same rotating shaft and can rotate around the rotating shaft. Among them, the distance between the hinge seat 1 and the engine hood 2 is greater than or equal to the protruding height of the convex structure, so that the convex structure will not block the relative rotation between the hinge seat 1 and the engine hood 2. The thicknesses of the pawl 3 and the elastic member 4 are both smaller than the protruding height of the convex structure, and the sum of the thickness of the pawl 3 and the thickness of the elastic member 4 is smaller than the thickness of the first connecting column 23, so that the pawl 3 can perform a supporting function between the hinge seat 1 and the engine hood 2.

[0042] Furthermore, as Figure 4 shown, during the opening process of the engine hood 2, the pawl 3 has a first position in contact with the surface of the stop portion 11, and a second position in which, after contacting the surface of the stop portion 11, it rotates around the engine hood 2 and disengages from the surface of the stop portion 11. After passing through the second position, the pawl 3 switches to the working position. When the pawl 3 contacts the stop portion 11, the pawl 3 rotates clockwise due to the block of the stop portion 11, and then continues to move clockwise along the surface of the stop portion 11 until the pawl 3 disengages from the surface of the stop portion 11. At this time, since the pawl 3 is released from the block of the stop portion 11, under the restoring force of the elastic member 4, the pawl 3 rotates counterclockwise around the rotating shaft 24. At this time, the engine hood 2 releases force, the head of the pawl 3 abuts against the L-shaped notch, and the tail of the pawl 3 overlaps with the first limiting portion 21, reaching the working position of the pawl 3, which can support the engine hood 2 to keep the engine hood 2 in the open position. In this way, the open position can be maintained without manual support or strut support for engine maintenance, repair, and other operations, providing a larger working space.

[0043] Specifically, the first limiting portion 21 is located below the second limiting portion 22. When the pawl 3 is in the initial position, the pawl 3 contacts the first limiting portion 21. It should be noted that the first limiting portion 21 and the second limiting portion 22 not only limit the position of the pawl 3. In addition to limiting, the first limiting portion 21 also plays a supporting role. The first limiting portion 21 provides a supporting function for the pawl 3 in the initial position and the working position.

[0044] Furthermore, as Figure 5 、 Figure 6As shown, a fourth limiting portion 13 is provided on the hinge seat 1. The vertical height of the fourth limiting portion 13 is greater than the vertical height of the stop portion 11. After the pawl 3 is in the working position and the engine hood 2 continues to open in the opening direction, the pawl 3 successively has a third position in contact with the fourth limiting portion 13 and a fourth position in contact with the second limiting portion 22 after separating from the fourth limiting portion 13. After the pawl 3 reaches the fourth position, the engine hood 2 is operated to rotate downward to the closed position.

[0045] It should be noted that the vertical height of the fourth limiting portion 13 is greater than the vertical height of the stop portion 11, and the fourth limiting portion 13 limits the maximum opening angle of the engine hood. When the pawl 3 is in the working position, a force is continuously applied to the engine hood 2 to move the engine hood 2 upward clockwise. The pawl 3 disengages from the L-shaped notch and then disengages from the stop portion 11 and moves together with the engine hood 2 until the head of the pawl 3 contacts the fourth limiting portion 13. Then, the pawl 3 is blocked by the fourth limiting portion 13 and rotates clockwise. When the engine hood 2 continues to open, the head of the pawl 3 disengages from the fourth limiting portion 13, and the tail end of the pawl 3 contacts the second limiting portion 22. At this time, the engine hood is operated in the reverse direction to rotate downward to the closed position.

[0046] Furthermore, as Figure 7 shown, after the pawl 3 reaches the fourth position, the engine hood 2 is operated to continue opening until the pawl 3 moves to a fifth position where it contacts the fourth limiting portion 13 again. When the pawl 3 is in the fifth position, the engine hood 2 is operated to rotate downward to the closed position.

[0047] It should be noted that after the pawl 3 reaches the fifth position, due to the limiting effect of the second limiting portion 22 and the fourth limiting portion 13, the engine hood 2 cannot continue to open, that is, at this time, the hinge of the engine hood 2 is opened to the upper limit angle. Only the engine hood 2 can be operated to move downward and close. The setting of the fifth position and the upper limit angle can ensure that the engine hood 2 is opened within a certain angle range, avoiding the situation where the engine hood 2 is opened without limit, which is not conducive to engine operation and closing.

[0048] Furthermore, as Figure 8 shown, a third limiting portion 12 is provided on the hinge seat 1. The vertical height of the third limiting portion 12 is less than the vertical height of the stop portion 11. During the closing process of the engine hood 2, the pawl 3 has a sixth position in contact with the third limiting portion 12. After passing through the sixth position, the pawl 3 switches to a seventh position in contact with the second limiting portion 22. When the pawl 3 is in the seventh position, the engine hood 2 is in the closed position.

[0049] It should be noted that the vertical height of the third limiting portion 12 is less than that of the stop portion 11, and the third limiting portion 12 limits the extreme closing position of the engine hood. During the closing process of the engine hood 2, when the pawl 3 reaches the sixth position after contacting the third limiting portion 12, if a downward force is continuously applied to the engine hood 2 at this time, the pawl 3 is pushed by the third limiting portion 12, causing the whole pawl 3 to rotate counterclockwise until the rear end of the pawl 3 contacts the second limiting portion 22. At this time, the closing position of the engine hood 2 is reached, that is, the lower limit angle of the hinge closure, and the pawl 3 returns to the initial position, completing an opening and closing operation of the engine hood 2.

[0050] In an exemplary embodiment of the present application, the elastic member 4 is a spring. It should be noted that the elastic member 4 can also be an elastic tension rod member such as a rubber rod.

[0051] According to another aspect of this embodiment, a vehicle is further provided. The vehicle has an engine hood hinge mechanism, and the engine hood hinge mechanism is the engine hood hinge mechanism in the above embodiment. It should be noted that the vehicle can be a car, an SUV and other models with a single engine compartment, or a minivan, a bus, a truck and other models. The engine hood hinge mechanism can be used for the opening and closing structure of the engine compartment, and can also be used for the opening and closing of the luggage compartment.

[0052] This embodiment and its specific working principle are as follows:

[0053] As Figure 1 shown, the engine hood hinge mechanism includes a hinge seat 1, a hinge arm (connected to the engine hood 2), and a rotating shaft. The hinge seat 1 is fixed to the vehicle body end, and the hinge arm rotates around the hinge rotating shaft. The hinge arm has opening and closing limit positions.

[0054] As Figure 2 shown, there are a third limiting portion 12, a stop portion 11, and a fourth limiting portion 13 on the inner side of the hinge seat 1. The stop portion 11 has an L-shaped limiting step. The third limiting portion 12, the stop portion 11, and the fourth limiting portion 13 are fixedly arranged relative to the hinge seat 1.

[0055] As Figure 3 shown, there is a pawl 3 on the outer side of the hinge arm. The pawl 3 is fixed on a rotating shaft 24 extending from the hinge arm. The pawl 3 can rotate around the rotating shaft 24. There are a first limiting portion 21 and a second limiting portion 22 on the hinge arm at the rear end of the pawl 3. The pawl 3 can rotate between the first limiting portion 21 and the second limiting portion 22. There is a first connecting column 23 on the hinge arm at the rear end of the pawl 3, and there is a second connecting column 31 on the outer side of the pawl 3 to drive the pawl 3 to rotate. A spring is arranged between the first connecting column 23 and the second connecting column 31.

[0056] Under the combined action of the spring, the second limiting part 22 and the first limiting part 21, the pawl 3 can maintain the state of being supported and limited by the first limiting part 21 or the state of being limited by the second limiting part 22. The tension spring rotates with the pawl 3, and the axis of the rotating shaft 24 of the pawl 3 switches between the tension springs in the above two states.

[0057] As Figure 4 shown, when the engine hood 2 is in the closed state, the hinge arm is in the closed state, and the pawl 3 is supported by the first limiting part 21. When the engine hood 2 is opened, the hinge arm opens, and the pawl 3 rotates upward accordingly. When the pawl 3 encounters the stop part 11, as the hinge arm continues to rotate clockwise upward, the pawl 3 slides along the stop part 11 until it disengages from the stop part 11, and then the pawl 3 rotates counterclockwise around its own rotating shaft 24 until the pawl 3 loses the block of the first limiting part 21. At this time, the engine hood 2 can be released, and the pawl 3 is stuck by the L-shaped limiting step on the stop part 11 to keep the hood in a supported state.

[0058] When it is necessary to close the engine hood 2, continue to push the engine hood 2 upward. The hinge arm continues to rotate clockwise in the open state. At the beginning, the pawl 3 remains in the working state and moves away from the stop part 11 together with the hinge arm until it abuts against the fourth limiting part 13. Then the hinge arm continues to rotate clockwise, and the pawl 3 rotates clockwise along its own rotating shaft 24 under the pressure of the fourth limiting part 13. When the spring rotates past the axis of the rotating shaft 24, the pawl 3 abuts against the second limiting part 22, as Figure 5 、 Figure 6 shown.

[0059] After the pawl 3 switches to the state of being limited and supported by the second limiting part 22, that is, after the engine hood 2 reaches the open state, continue to push the engine hood 2 upward to increase the opening angle. When the front end of the pawl 3 abuts against the fourth limiting part 13, as Figure 7 shown, the hinge opens to the upper limit angle, and there is an opening stroke of greater than or equal to 100 mm between the upper limit angle and the front part of the engine hood 2 in the open state.

[0060] Push the engine hood 2 downward, and the hinge arm rotates counterclockwise. The pawl 3 maintains the upper limit angle state. When the pawl 3 encounters the third limiting part 12, continue to rotate the hinge arm counterclockwise. The pawl 3 rotates counterclockwise around its own rotating shaft 24 under the push of the third limiting part 12. When the tension spring rotates past the axis of the rotating shaft 24, it reaches the lower limit position, and the engine hood 2 is closed.

[0061] From the above description, it can be seen that the pawl 3 is movably connected to the engine hood 2. During the process of operating the engine hood 2 to switch between the open position and the closed position, the pawl 3 can rotate relative to the engine hood 2, so that the pawl 3 has an initial position received inside the engine hood 2 and a working position where the pawl 3 abuts against the stop portion 11. Through the setting of the pawl 3, the following technical effects are achieved:

[0062] 1) The automatic limiting of the engine hood 2 after being lifted is realized through the pawl 3, the elastic member 4 and the plurality of limiting post structures on the hinge, so that the engine hood 2 is kept in the open state. Compared with the conventional structure, the strut structure is cancelled, and the space during the maintenance of the engine compartment is larger;

[0063] 2) When the engine hood 2 needs to be closed, only need to push the engine hood 2 upward to release the working limit position of the pawl 3, and then close the engine hood 2, which is convenient to use and easy to operate;

[0064] 3) The hinge structure is a pure mechanical structure, with good reliability and long service life;

[0065] 4) The hinge realizes the upper limit limit through the fourth limiting portion 13, without a separately designed limiting structure, without occupying the rear structure space, with a compact overall size and low layout difficulty;

[0066] 5) When the engine hood 2 is unlocked from the working position, it needs to be pushed upward by about 100 mm. Since the pawl 3 switches between the second limiting portion 22 and the fourth limiting portion 13, the operating feel is clear and obvious, avoiding the possibility of misoperation.

[0067] For the sake of convenience of description, relative space terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the relative space terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the relative space descriptions used here are made.

[0068] In addition to the above, it should be noted that the "one embodiment", "another embodiment", "embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in connection with this embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any embodiment, it is intended that the implementation of such feature, structure or characteristic in connection with other embodiments also falls within the scope of the present invention.

[0069] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An engine hood hinge mechanism, characterized in that, Comprising: A hinge base (1) which is connected to the vehicle body, and a stop portion (11) is provided on the hinge base (1); An engine hood (2) which is rotatably connected to the hinge base (1) so that the engine hood has an open position and a closed position, and a first limiting portion (21) and a second limiting portion (22) are provided on the engine hood (2); A pawl (3) which is movably connected to the engine hood (2), and a part of the pawl (3) is located between the first limiting portion (21) and the second limiting portion (22). During the process of operating the engine hood (2) to switch between the open position and the closed position, the pawl (3) can rotate relative to the engine hood (2) so that the pawl (3) has an initial position received inside the engine hood (2) and a working position where the pawl (3) abuts against the stop portion (11). Wherein, when the pawl (3) is in the initial position, the engine hood (2) is in the closed position, and when the pawl (3) is in the working position, the engine hood (2) is in the open position.

2. The engine hood hinge mechanism according to claim 1, characterized in that, The engine hood hinge mechanism further comprises: An elastic member (4), the first end of the elastic member (4) is connected to the engine hood (2) through a first connecting column (23) provided on the engine hood (2), the second end of the elastic member (4) is connected to the middle of the pawl (3) through a second connecting column (31) provided on the pawl (3), the pawl (3) is rotatably connected to the engine hood (2) through a rotating shaft (24) provided on the engine hood (2), the rotating shaft (24) is located between the first connecting column (23) and the second connecting column (31), and the first connecting column (23) is located on one side of the tail of the pawl (3).

3. The engine hood hinge mechanism according to claim 2, characterized in that, The stop portion (11) is a convex structure provided on the hinge base (1), and a notch structure matching the head of the pawl (3) is provided on the surface of the convex structure, and the notch structure is an L-shaped notch.

4. The engine hood hinge mechanism according to claim 3, characterized in that, During the opening process of the engine hood (2), the pawl (3) has a first position in contact with the surface of the stop portion (11) and a second position where it rotates around the engine hood (2) and disengages from the surface of the stop portion (11) after contacting the surface of the stop portion (11), and the pawl (3) switches to the working position after passing through the second position.

5. The engine hood hinge mechanism according to claim 4, characterized in that, The first limiting portion (21) is located below the second limiting portion (22), and when the pawl (3) is in the initial position, the pawl (3) contacts the first limiting portion (21).

6. The engine hood hinge mechanism according to claim 5, characterized in that, The hinge base (1) is provided with a fourth limiting part (13), the vertical height of the fourth limiting part (13) is greater than the vertical height of the stop part (11). After the pawl (3) is in the working position, when the engine hood (2) continues to open in the opening direction, the pawl (3) successively has a third position in contact with the fourth limiting part (13), and a fourth position in contact with the second limiting part (22) after being separated from the fourth limiting part (13). After the pawl (3) reaches the fourth position, the engine hood (2) is operated to rotate downward to the closed position.

7. The engine hood hinge mechanism according to claim 6, characterized in that, After the pawl (3) reaches the fourth position, the engine hood (2) is operated to continue opening until the pawl (3) moves to a fifth position in contact with the fourth limiting part (13) again. When the pawl (3) is in the fifth position, the engine hood (2) is operated to rotate downward to the closed position.

8. The engine hood hinge mechanism according to claim 7, characterized in that, The hinge base (1) is provided with a third limiting part (12), the vertical height of the third limiting part (12) is less than the vertical height of the stop part (11). During the closing process of the engine hood (2), the pawl (3) has a sixth position in contact with the third limiting part (12), and the pawl (3) switches to a seventh position in contact with the second limiting part (22) after passing through the sixth position. When the pawl (3) is in the seventh position, the engine hood (2) is in the closed position.

9. The engine hood hinge mechanism according to any one of claims 2-8, characterized in that, The elastic member (4) is a spring.

10. A vehicle, comprising a hood hinge mechanism, characterized in that, The engine hood hinge mechanism is the engine hood hinge mechanism according to any one of claims 1-9.

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