CN210067743U

CN210067743U - Active hood hinge mechanism, hinge system and vehicle

Info

Publication number: CN210067743U
Application number: CN201920233602.XU
Authority: CN
Inventors: 汪立军; 汪家胜; 董传林; 陈新; 李新
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2020-02-14
Anticipated expiration: 2029-02-22

Abstract

The utility model relates to an active engine hood hinge mechanism, hinge system and vehicle, including being used for being connected to the activity hinge subassembly of engine hood and being used for the fixed hinge on the automobile body, wherein, the activity hinge subassembly includes first hinge and the second hinge of interconnect, the one end of first hinge is connected to the fixed hinge through first pivot, the second hinge is connected to the engine hood, the second hinge has locking state and unblock state relative to first hinge, in the locking state, first hinge can drive the second hinge and rotate around first pivot, in the unblock state, first hinge can rotate around first pivot, drive the hood lock motion of second hinge around the engine hood front end, in order to jack-up the engine hood, when receiving external force, the second hinge can switch to the unblock state by the locking state. Can realize the normal switching of engine bonnet under the locking state, when bumping, can initiatively jack up the rear end of engine bonnet, reduce the injury to the pedestrian.

Description

Active hood hinge mechanism, hinge system and vehicle

Technical Field

The present disclosure relates to the field of vehicle hoods, and in particular, to an active hood hinge mechanism, a hinge system, and a vehicle.

Background

The accident of automobile collision with pedestrian occupies a large proportion in the road traffic safety accident, and the head of the pedestrian collides with the engine hood and often causes great damage to human body. The pedestrian protection head impact injury index, i.e., HIC, is calculated from an acceleration response signal of a head impacting the body structure, and generally speaking, the smaller the crash cushion space, the higher the crash acceleration, the larger the HIC, and the greater the pedestrian injury. Therefore, in order to reduce the acceleration peak, the impacted structure must have better deformation performance and larger buffer space. However, due to the influence of relevant factors such as modeling and general arrangement, the space between the engine hood and the engine compartment structure is relatively small, and a sufficient buffer space cannot be provided, so that the injury value of the head part impacting certain areas of the engine hood is over-standard.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide an active hood hinge mechanism capable of jacking up a rear end of a hood in the event of a collision, increasing a buffering space.

In order to achieve the above object, the present disclosure provides an active hood hinge mechanism including a movable hinge assembly for connecting to a hood and a fixed hinge for fixing to a vehicle body, wherein the movable hinge assembly includes a first hinge and a second hinge connected to each other, one end of the first hinge is connected to the fixed hinge through a first rotating shaft, the second hinge is connected to the hood, and the second hinge has a locked state and an unlocked state with respect to the first hinge, in the locked state, the first hinge can drive the second hinge to rotate around the first rotating shaft, in the unlocked state, the first hinge can rotate around the first rotating shaft to drive the second hinge to move around a hood lock at a front end of the hood to jack up the hood, and when an external force is applied, the second hinge is switchable from the locked state to the unlocked state.

Optionally, one end of the second hinge, which is far away from the engine hood, is fixedly connected to the first hinge through a crushing element, and the other end of the first hinge, which is far away from the first rotating shaft, is connected to the second hinge through a second rotating shaft, in the locked state, the second hinge is fixedly connected to the first hinge through the crushing element so as to be interlocked with the first hinge, and when an external force is applied, the crushing element is crushed, so that one end of the second hinge, which is far away from the engine hood, can be separated from the first hinge, so as to switch the second hinge from the locked state to the unlocked state.

Optionally, the crushing element comprises a pin shaft and a pin which are matched with each other, a through hole for inserting the pin is formed in one end, away from the head, of the pin shaft, and a plurality of crushing grooves are formed in the pin shaft at intervals along the length direction of the pin shaft.

Optionally, the second hinge is provided with a long hole for allowing the second rotating shaft to slide, in the locked state, the first hinge is fixed to an end portion, far away from the first rotating shaft, of the long hole through the second rotating shaft, and in the unlocked state, the first hinge can rotate around the first rotating shaft and simultaneously drive the second rotating shaft to slide towards the other end portion of the long hole along the extending direction of the long hole, so that the second hinge can rotate around the hood lock to jack up the engine hood.

Optionally, first hinge includes first hinge arm, and the one end of this first hinge arm is passed through first pivot with fixed hinged joint, the other end passes through the second pivot with second hinged joint, the second hinge includes second hinge arm, first hinge arm with second hinge arm is equallyd divide and is do not moved towards engine bonnet's direction is turned over to be formed with first connection turn-ups and second connection turn-ups respectively, first connection turn-ups with the second connection turn-ups passes through the conquassation component is connected.

Optionally, an upper end of an end portion of the second hinge arm remote from the first rotating shaft is folded toward the engine cover to form a fixing flange, and the fixing flange is detachably connected to an inner panel of the engine cover.

Optionally, the fixed hinge comprises a seat for connection with the first hinge, and a fixed seat for detachable connection to the vehicle body.

According to another aspect of the present disclosure, there is also provided an active hood hinge system, wherein the active hood hinge system disclosed above includes an actuator connected to the vehicle body and providing the external force, and a controller electrically connected to the actuator to control the actuator to apply the external force to the movable hinge assembly to jack up the hood through the second hinge.

Optionally, a sensor for detecting an impact signal is further included, the sensor being electrically connected to the controller.

According to yet another aspect of the present disclosure, there is also provided a vehicle including the active hood hinge system disclosed above.

The beneficial effect of this technique is: this active engine bonnet the hinge mechanism can realize the normal switching of engine bonnet under the locking state, when bumping, can initiatively jack-up the rear end of engine bonnet, increase buffer space, reduce the injury to the pedestrian.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is an assembly view of an active hood hinge mechanism provided by an embodiment of the present disclosure;

FIG. 2 is an exploded view of an active hood hinge mechanism provided by embodiments of the present disclosure;

FIG. 3 is a block diagram of a crush element in an active hood hinge mechanism provided by embodiments of the present disclosure;

FIG. 4 is a block diagram of a pin in an active hood hinge mechanism provided by embodiments of the present disclosure;

FIG. 5 is a state diagram of an active hood hinge mechanism provided by embodiments of the present disclosure with the hood normally closed in a locked state;

FIG. 6 is a diagram illustrating a normal opening of the hood in a locked state in the active hood hinge mechanism provided by the present disclosure;

fig. 7 is a state diagram of an active hood hinge mechanism in an unlocked state provided by an embodiment of the present disclosure.

Description of the reference numerals

1 fixed hinge 2 first hinge 21 first hinge arm

3 second hinge 31 second hinge arm 4 first pivot

5 second shaft 6 crushing element 7 slot

22 first connecting flange 32 and second connecting flange 33 fixing flange

11 holder 12 holder 20 driver

101 first mounting hole 121 second mounting hole 61 pin

62 pin 611 head 621 crush slot

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

As shown in fig. 1 to 7, the present disclosure provides an active hood hinge mechanism, including a movable hinge assembly for attachment to a hood and a fixed hinge 1 for fixation to a vehicle body, wherein the movable hinge assembly includes a first hinge 2 and a second hinge 3 connected to each other, one end of the first hinge 2 is connected to the fixed hinge 1 by a first rotating shaft 4, the second hinge 3 is connected to the engine cover, the second hinge 3 has a locked state and an unlocked state with respect to the first hinge 2, in a locking state, the first hinge 2 can drive the second hinge 3 to rotate around the first rotating shaft 4, in an unlocking state, the first hinge 2 can rotate around the first rotating shaft 4 to drive the second hinge 3 to move around a hood lock at the front end of the engine hood, to jack up the hood, the second hinge 3 can be switched from the locked state to the unlocked state when subjected to an external force.

When the hood normally operates, as shown in fig. 5 and 6, the second hinge 3 is relatively fixed to the first hinge 2 and rotates about the first rotating shaft 4 with the first hinge 2 to realize normal opening and closing of the hood. When a pedestrian collides with the engine hood, as shown in fig. 1 and 7, the movable hinge assembly is driven by external force, the second hinge 3 is unlocked, namely, the constraint with the first hinge 2 is removed, the first hinge 2 is jacked upwards along with the driving of the external force, and can rotate along with the first rotating shaft 4, so that the second hinge 3 is further driven to rotate around the hood lock at the front end of the engine hood, the rear end of the engine hood is jacked finally, the movable hinge assembly can be contacted with the pedestrian in advance, the buffering space is increased, the engine hood can be guaranteed to deform greatly, and the injury to the head of the pedestrian can be reduced.

Further, as shown in fig. 1, 3 and 4, in order to realize that the second hinge 3 can be switched from the locked state to the unlocked state with respect to the first hinge 2 after the hood is impacted by a pedestrian, in the present embodiment, one end of the second hinge 3 away from the hood is fixedly connected to the first hinge 2 by the crushing element 6, and the other end of the first hinge 2 away from the first rotating shaft 4 is connected to the second hinge 3 by the second rotating shaft 5, in the locked state, the second hinge 3 is fixedly connected with respect to the first hinge 2 by the crushing element 6 to be interlocked with the first hinge 2, and in the case of external force, the crushing element 6 is crushed so that one end of the second hinge 3 away from the hood can be separated from the first hinge 2 to switch the second hinge 3 from the locked state to the unlocked state.

That is, when the engine hood normally works, the crushing element 6 is used as a fixing piece to fix the first hinge 2 and the second hinge 3, so that the first hinge 2 and the second hinge 3 do not move relatively, the second hinge 3 can move normally along with the first hinge 2, and the engine hood can be normally opened and closed in a locking state. Once a pedestrian collides with the hood, the crushing element is crushed by external force, so that the crushing element causes the connection failure of the ends of the first hinge 2 and the second hinge 3 far away from the hood, and the fixed constraint between the first hinge 2 and the second hinge 3 is released, so as to realize the unlocking of the second hinge 3 relative to the first hinge 2.

Like this, after second hinge 3 unblock for relative motion can take place between second hinge 3 and the first hinge 2, along with the continuation effect of external force, at first hinge 2 is rotated around first pivot 4 by the jack-up, and second hinge 3 is used with effort through second pivot 5 afterwards, makes to drive second hinge 3 and rotates around the bonnet lock to the rear end of jack-up engine bonnet protects the pedestrian.

Specifically, as shown in fig. 3 and 4, in the present embodiment, the crushing element 6 includes a pin 61 and a pin 62 that are engaged with each other, a through hole for inserting the pin 62 is opened at one end of the pin 61 away from the head 611, and the pin 62 is provided with a plurality of crush slots 621 at intervals along the length direction thereof. Like this, the cooperation of round pin axle 61 and pin 62 can realize fixing first hinge 2 and second hinge 3 together, simultaneously through set up the groove 621 that bursts at pin 62 department, realizes local weakening, when receiving external force, when upwards jack-up round pin axle 61, the groove 621 part that bursts of pin 62 just can receive the effect of shearing force to can cut the pin from round pin axle 61 in, realize the unblock of second hinge 3 relative first hinge 2.

Specifically, as shown in fig. 7, in order to satisfy the requirement that the second hinge 3 can lift up the engine hood after being unlocked, in the present embodiment, a long hole 7 for the second rotating shaft 5 to slide is opened on the second hinge 3, in the locked state, the first hinge 2 is fixed into one end portion of the long hole 7 away from the first rotating shaft 4 through the second rotating shaft 5, and in the unlocked state, the first hinge 2 can rotate around the first rotating shaft 4 and simultaneously drive the second rotating shaft 5 to slide towards the other end portion of the long hole 7 along the extending direction of the long hole 7, so that the second hinge 3 can rotate around the hood lock to lift up the engine hood.

That is, be relative motion's connection between first hinge 2 and the second hinge 3 after the unblock, both can relative slip and relative rotation, through set up slot hole 7 on second hinge 3, make second pivot 5 can slide in this slot hole 7, so that second hinge 3 can be under first hinge 1's drive, normally rotate around the aircraft bonnet lock, upwards lifting in the rear end that finally drives the engine bonnet, increase the buffer space between engine bonnet and the engine compartment, reduce the injury that pedestrian's head striking engine bonnet caused, improve the initiative protection to the pedestrian.

Specifically, as shown in fig. 2, in order to satisfy the connection between the first hinge 2 and the second hinge 3, in the present embodiment, the first hinge 2 includes a first hinge arm 21, one end of the first hinge arm 21 is connected to the fixed hinge 1 through a first rotating shaft 4, the other end is connected to the second hinge 3 through a second rotating shaft 5, the second hinge 3 includes a second hinge arm 31, the first hinge arm 21 and the second hinge arm 31 are respectively folded toward the engine hood to form a first connecting flange 22 and a second connecting flange 32, and the first connecting flange 22 and the second connecting flange 32 are connected through a crushing element 6. When the crushing element 6 is crushed and failed, the first connecting flange 22 and the second connecting flange 32 are separated from each other, and the relative movement of the first hinge 2 and the second hinge 3 is realized by the sliding of the second rotating shaft 5 in the long hole 7.

More specifically, in order to achieve that the second hinge 3 can be attached to the hood, in the present embodiment, the upper end of the one end portion of the second hinge arm 31 remote from the first rotating shaft 4 is folded back toward the hood to be formed with a fixing flange 33, and this fixing flange 33 is detachably attached to the inner panel of the hood.

In addition, in the present embodiment, the fixed hinge 1 includes a mount 11 for connection with the first hinge 2, and a fixing base 12 for detachable connection to the vehicle body.

That is, in the present embodiment, in order to facilitate detachment and installation, the second hinge 3 and the fixed hinge 1 are detachably installed, for example, by being respectively connected to the first mounting hole 101 and the second mounting hole 121 by bolts, so long as detachment convenience can be satisfied.

According to another aspect of the present disclosure, there is also provided an active hood hinge system including the above disclosed active hood hinge mechanism, and an actuator 20 connected to the vehicle body for providing the above external force, and a controller electrically connected to the actuator to control the actuator 20 to apply the above external force to the movable hinge assembly, that is, to the crushing element 6, to jack up the hood through the second hinge 3, and a vehicle including the active hood hinge system.

Meanwhile, the active hood hinge system further includes a sensor for detecting a collision signal, the sensor being electrically connected to the controller. The sensor can be a collision sensor used in an air bag, and the model number can be 4M 0959651.

The specific working process is as follows: when taking place emergency collision, collision sensor detects the collision strength signal of car to transmit this collision signal to the controller, the controller can control driver 20 and exert external force to crushing component 6, realizes the relative first hinge 2 unblock of second hinge 3, continues to apply to first hinge 2 through external force after the unblock, makes first hinge 2 drive second hinge 3 and can rotate around the aircraft bonnet lock, with the rear end of jacking engine bonnet. Also engine bonnet rotates around the aircraft bonnet lock of front end this moment to realize the jacking of engine bonnet's rear end, timely increase collision buffering space reduces the injury of engine bonnet to pedestrian's head, has promoted the initiative protection to the pedestrian greatly.

Wherein the controller may be an emergency switch. When the driver encounters an emergency, depressing the emergency switch actuates the actuator 20 to raise the hood. Of course, the controller may also be a logic control circuit or a PLC controller, etc. The actuator 20 may be a linear cylinder, a jack, or the like as long as it can apply a driving force toward the movable hinge assembly.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. An active hood hinge mechanism comprising a movable hinge assembly for attachment to a hood and a fixed hinge (1) for attachment to a vehicle body, characterized in that the movable hinge assembly comprises a first hinge (2) and a second hinge (3) connected to each other, one end of the first hinge (2) being connected to the fixed hinge (1) by a first hinge axis (4), the second hinge (3) being attached to the hood, the second hinge (3) having, with respect to the first hinge (2), a locked state in which the first hinge (2) is able to bring the second hinge (3) into rotation about the first hinge axis (4) and an unlocked state in which the first hinge (2) is able to rotate about the first hinge axis (4) to bring the second hinge (3) into hood locking movement about the hood front end, so as to jack up the hood, the second hinge (3) being switchable from the locked state to the unlocked state when subjected to an external force.

2. The active hood hinge mechanism of claim 1, characterized in that the end of the second hinge (3) remote from the hood is fixedly connected to the first hinge (2) by a crushing element (6), and the other end of the first hinge (2) far away from the first rotating shaft (4) is connected with the second hinge (3) through a second rotating shaft (5), in the locked state, the second hinge (3) is fixedly connected relative to the first hinge (2) through the crushing element (6) so as to be linked with the first hinge (2), when the external force is applied, the crushing element (6) is crushed, so that one end of the second hinge (3) far away from the engine hood can be separated from the first hinge (2), to switch the second hinge (3) from the locked state to the unlocked state.

3. The active hood hinge mechanism of claim 2, wherein the crush element (6) comprises a pin (61) and a pin (62) which are matched with each other, a through hole for inserting the pin (62) is formed in one end of the pin (61) far away from the head (611), and a plurality of crush slots (621) are formed in the pin (62) at intervals along the length direction of the pin.

4. The active hood hinge mechanism according to claim 2 or 3, wherein the second hinge (3) is provided with a long hole (7) for sliding the second rotating shaft (5), in the locked state, the first hinge (2) is fixed into one end of the long hole (7) far away from the first rotating shaft (4) through the second rotating shaft (5), and in the unlocked state, the first hinge (2) can rotate around the first rotating shaft (4) and simultaneously drive the second rotating shaft (5) to slide towards the other end of the long hole (7) along the extending direction of the long hole, so that the second hinge (3) can rotate around the hood lock to jack up the hood.

5. The active hood hinge mechanism according to claim 4, characterized in that the first hinge (2) comprises a first hinge arm (21), one end of which (21) is connected to the fixed hinge (1) by means of the first rotation shaft (4) and the other end is connected to the second hinge (3) by means of the second rotation shaft (5), the second hinge (3) comprising a second hinge arm (31), the first hinge arm (21) and the second hinge arm (31) each being respectively folded towards the direction of the hood to form a first connection flap (22) and a second connection flap (32), respectively, the first connection flap (22) and the second connection flap (32) being connected by means of the crushing element (6).

6. The active hood hinge mechanism of claim 5, characterized in that the upper end of the second hinge arm (31) remote from the first rotation shaft (4) is folded towards the hood to form a fixing flap (33), which fixing flap (33) is detachably connected to the hood inner panel.

7. The active hood hinge mechanism according to claim 1, characterized in that the fixed hinge (1) comprises a seat (11) for connection with the first hinge (2), and a fixed seat (12) for detachable connection to the body.

8. An active hood hinge system, characterized by comprising an actuator (20) and a controller and an active hood hinge mechanism according to any one of claims 1-7, the actuator (20) being connected to the body and providing the external force, the controller being electrically connected with the actuator (20) to control the actuator (20) to apply the external force to the movable hinge assembly to jack the hood up through the second hinge (3).

9. The active hood hinge system of claim 8, further comprising a sensor for detecting an impact signal, the sensor being electrically connected to the controller.

10. A vehicle comprising an active hood hinge system according to claim 8 or 9.