CN112610101A

CN112610101A - Air supporting device, cover hinge mechanism and vehicle

Info

Publication number: CN112610101A
Application number: CN202011410296.6A
Authority: CN
Inventors: 于秀波; 唐胜君; 何杨明; 张艳国; 王欣伟; 蒋福鑫
Original assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Current assignee: Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-04-06

Abstract

The application relates to the field of vehicles, and discloses gas strut device, cover the hinge mechanism and vehicle, gas strut device (10) include cylinder (11) and wear to locate vaulting pole (12) of cylinder, the vaulting pole is with dividing into the first cavity that has the vaulting pole in the cylinder and do not have the vaulting pole and with the sealed second cavity C of vaulting pole, the cylinder is including the diapire of injecing second cavity C, the diapire includes fixed part and removal portion, the fixed part is provided with through-hole (111), the removal portion sets up and can move and switch between the closed condition at the open state that makes the through-hole and closed through-hole for the fixed part. When the upper plate of the machine cover hinge is bounced, the stay bar is driven to be away from the bottom wall quickly, so that the pressure of the second chamber is reduced quickly, the moving part moves under the action of external air pressure to open the through hole, and the stay bar is ensured to reach the limit position at the highest speed. When the reset is needed, only the second chamber needs to be exhausted.

Description

Air supporting device, cover hinge mechanism and vehicle

Technical Field

The present application relates to the field of vehicles, and in particular, to an inflatable device, a hood hinge mechanism and a vehicle.

Background

With the popularization of vehicles, traffic accidents are inevitably caused. In a traffic accident in which a pedestrian is hit, the pedestrian is often seriously injured, and therefore, a great deal of improvement is made in vehicle design to reduce injury to the pedestrian at the time of collision. For example, a cover hinge mechanism that can be actively sprung up at the time of a collision is used to minimize injury to the head of a pedestrian at the time of the collision. In the prior art, the cover hinge mechanism limits the bounce position through a rigid limiting part after bouncing up in a collision (including false start in response to a false collision signal), cannot reset after bouncing up, and the bouncing impact generally causes the mechanism hinge mechanism to be damaged and cannot be used continuously.

Disclosure of Invention

The utility model aims at overcoming the unable problem of reseing and continue the use after the cover hinge mechanism bounces that prior art exists, provides an air supporting device, and this air supporting device can allow the cover hinge mechanism to bounce back and reseed and continue the use.

In order to realize the above-mentioned purpose, this application provides a gas strut device in one aspect, wherein, the gas strut device includes the cylinder and wears to locate the vaulting pole of cylinder, the vaulting pole will divide into in the cylinder to have the first chamber of vaulting pole with do not have the vaulting pole and with the sealed second chamber C of vaulting pole, the cylinder is including injecing the diapire of second chamber C, the diapire includes fixed part and removal portion, the fixed part is provided with the through-hole, the removal portion sets up through-hole department and can for the fixed part removes and makes the open state that the through-hole is open and seals switch between the closed state of through-hole.

Alternatively, the moving portion may be provided so as to be capable of being held in a position of blocking the through hole by its own weight.

Optionally, the moving part includes a flexible plate-like member having one end fixed to the fixing part and a mass body extending from the flexible plate-like member across the through hole.

Optionally, the moving portion is provided with a relief hole allowing the second chamber to communicate with the outside.

The application still provides a cover the hinge mechanism, wherein, the cover the hinge mechanism including being used for cover hinge upper plate, automobile body skeleton, the gas of this application props the device and is used for connecting the bounce the initiator connecting portion of the initiator of cover hinge upper plate, the end of vaulting pole connect in cover hinge upper plate, the cylinder is fixed in automobile body skeleton.

Optionally, the cover hinge mechanism includes a movable arm assembly and a hinge base plate mounted to the vehicle body frame, the movable arm assembly includes a first arm and a second arm hinged to each other, the first arm is hinged to the cover hinge upper plate, and the second arm is hinged to the hinge base plate.

Optionally, the end of the stay bar is connected to the upper cover hinge plate through the first arm, and the end of the stay bar and the first arm form a spherical hinge structure.

Optionally: the first arm and/or the second arm is provided with a pawl for limiting the relative pivoting range of the first arm and the second arm; and/or the cover hinge mechanism comprises two movable arm assemblies which are symmetrically arranged.

Optionally, the cylinder includes and is used for installing the mounting panel of automobile body skeleton, the automobile body skeleton is provided with the pilot hole, the mounting panel be provided with the mounting hole that the pilot hole corresponds, wherein:

the mounting hole is arc-shaped with the center of the mounting plate as the center of a circle; and/or the presence of a gas in the gas,

the center protrusion of mounting panel has screw thread portion, be provided with on the automobile body skeleton be used for with the screw hole of screw thread portion joint.

The present application further provides a vehicle, wherein the vehicle includes the bonnet hinge mechanism of the present application.

Through the technical scheme, when the upper plate of the machine cover hinge is bounced, the support rod is driven to be away from the bottom wall quickly, so that the pressure of the second chamber is reduced quickly, the moving part moves under the action of external air pressure to open the through hole, and the support rod is ensured to reach the limit position at the highest speed. When the reset is needed, only the second chamber needs to be exhausted.

Drawings

FIG. 1 is a schematic view illustrating the bottom of a cylinder barrel of one embodiment of the gas strut device of the present application, wherein the bottom wall is in a closed condition;

FIG. 2 is a schematic view of the bottom of the cylinder of the gas strut device of FIG. 1, with the bottom wall in an open condition;

fig. 3 is a perspective view illustrating a cover hinge mechanism of the present application;

FIG. 4 is a perspective view of another angle of FIG. 3;

fig. 5 is a schematic view of a mounting plate of the gas supporting device of fig. 3.

Description of the reference numerals

10-gas strut device, 11-cylinder, 111-through hole, 112-plate-shaped member, 113-mass body, 114-air relief hole, 115-mounting plate, 115 a-mounting hole, 115B-thread part, 12-strut, 20-cover hinge upper plate, 30-hinge bottom plate, 40-movable arm component, 41-first arm, 42-second arm, 43-claw, 50-initiator connecting part, hinge bottom plate B-spherical hinge structure and C-second chamber.

Detailed Description

The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration and explanation only, and are not intended to limit the present application.

In this application, where the contrary is not stated, the use of directional words such as "upper, lower, left and right" generally means upper, lower, left and right as illustrated with reference to the accompanying drawings; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

According to an aspect of the present application, a gas strut device is provided, wherein the gas strut device 10 includes a cylinder 11 and a stay 12 penetrating the cylinder 11, the stay 12 divides the inside of the cylinder 11 into a first chamber having the stay and a second chamber C having no stay 12 and sealed with the stay 12, the cylinder 11 includes a bottom wall defining the second chamber C, the bottom wall includes a fixed portion moving portion, the fixed portion is provided with a through hole 111, and the moving portion is provided at the through hole and is movable relative to the fixed portion to switch between an open state of opening the through hole 111 and a closed state of closing the through hole 111.

According to another aspect of the present application, there is provided a cover hinge mechanism including an initiator connecting portion 50 for connecting an initiator for popping up the cover hinge upper plate 20, a vehicle body frame, the gas strut device 10 of the present application, and a stay 12 having a distal end connected to the cover hinge upper plate 20, and a cylinder tube 11 fixed to the vehicle body frame.

When the explosion-proof cover is used, the cover hinge upper plate 20 is popped up under the action of the detonator (the detonator is detonated in response to a signal of the collision monitoring unit), the stay bar 12 is driven to be away from the bottom wall quickly, the pressure of the second chamber C is reduced quickly, and therefore the moving part moves under the action of external air pressure to open the through hole 111, and the stay bar is enabled to reach the limit position at the fastest speed. When the reset is needed, only the second chamber C needs to be exhausted.

Specifically, when the hood hinge upper plate 20 is popped up under the action of the initiator, the stay bar 12 is driven to be away from the bottom wall rapidly, the volume of the second chamber C is rapidly enlarged, and thus the pressure of the second chamber C is rapidly reduced. And the moving part moves by the external air pressure to open the through hole 111, the external air rapidly enters and fills the second chamber C, and the air entering from the outside pushes the stay to reach the limit position at the fastest speed on one hand and keeps the stay at the limit position on the other hand.

Because the stay bar 12 is only sealed with the second chamber C and not sealed with the first chamber, when the upper plate 20 of the hood hinge is bounced under the action of the initiator, the gas in the first chamber can be rapidly discharged without generating too much resistance to the movement of the stay bar 12. Preferably, the first chamber may be provided with a gas exhaust structure communicating with the outside so as to exhaust gas rapidly.

It can be understood that when the cover hinge upper plate 20 bounces, the air supporting device 10 is used for limiting, the clamping stagnation and the deformation caused by the collision with the rigid limiting part in the prior art can be avoided, the initial position can be recovered by exhausting air in the second chamber C after the bounces, and the function of protecting pedestrians and the maintenance cost are both considered.

However, in the case where the lid hinge upper plate 20 is not popped up by the action of the initiator, it is necessary to keep the through hole 111 in a closed state. For example, the moving portion may be biased by a biasing member in a position to close off the through hole 111. Preferably, this can be achieved by the self-weight of the moving part, i.e. the moving part is arranged to be able to remain in a position blocking the through-hole under the effect of the self-weight. Thus, only when the cap hinge upper plate 20 is popped up by the action of the initiator, so that the stay 12 is moved by a sufficient force and the second chamber C is instantaneously depressurized to achieve an effect similar to vacuum pumping, the pressure difference between both sides of the moving part (plus the self weight against the moving part) moves the moving part to open the through hole 111.

In addition, the moving portion may be movably disposed with respect to the fixed portion by various suitable means. For example, a vertical guide may be provided on the bottom wall to guide the movable portion to move vertically with respect to the fixed portion. When the cover hinge upper plate 20 is sprung upward, the moving portion moves vertically upward along the guide under the action of the pressure difference; when the pressure of the second chamber C coincides with the outside, the moving portion drops down along the guide by its own weight and blocks the through-hole 111.

Preferably, in order to enable the moving part to move rapidly in response to the pressure difference, as shown in fig. 1 and 2, the moving part includes a flexible plate-shaped member 112 having one end fixed to the fixed part and a mass body 113 extending from the flexible plate-shaped member across the through-hole 111. When the cover hinge upper plate 20 is sprung upward, the flexible plate member 112 is elastically deformed and is wound up around the fixed end of the flexible plate member 112 by the pressure difference, so that the moving portion opens the through hole 111. When the second chamber C is balanced with the external pressure, it returns to the position of blocking the through hole 111 by the self weight of the mass body 112 and the restoring force of the flexible plate-like member 112.

The flexible plate-like member 112 may be made of any suitable material as long as it has flexibility and can be elastically deformed, and may be made of, for example, a rubber material.

The mass body 113 is a member occupying a large weight percentage of the moving portion, and may be in various suitable forms. For example, the mass body 113 may be an integral structure with the flexible plate-like member 112 and be provided to be larger than the flexible plate-like member 112 in volume. Alternatively, the mass body 113 may be a material having a density greater than that of the flexible plate-like member 112, such as a metal material, so as to be provided in a small size.

The weight of the mass body 113 may be set as required, for example, according to the acting force acting on the stay 12, so that when a sufficient acting force acts on the stay 12 to rapidly move the stay 12 and the second chamber C is instantaneously depressurized to achieve an effect similar to vacuum pumping, the pressure difference between both sides of the moving part (in addition to overcoming the self weight of the moving part) is sufficient to move the moving part to open the through hole 111.

In order to return the cover hinge upper plate 20 to the initial position after the bounce, the moving part may be operated to move to a position where the through hole 111 is opened, for example, the moving part may be manually dialed. Preferably, in order to allow the stay 12 to bring the cover hinge upper plate 20 to the initial position automatically after being bounced, the moving portion is provided with a relief hole 114 allowing the second chamber to communicate with the outside. Specifically, in the embodiment of fig. 1 and 2, the air release hole 114 may be disposed on the flexible plate-shaped member 112 at a position corresponding to the through hole 111. Therefore, after the cover hinge upper plate 20 bounces upward and the moving part returns to the position for blocking the through hole 111, the gas in the second chamber C can be exhausted through the air release hole 114 under the pressure applied by the stay bar 12, so that the stay bar 12 drives the cover hinge upper plate 20 to slowly descend to the initial position.

Wherein the size of the air release hole 114 can be designed according to the required exhaust speed so that the stay bar 12 and the cover hinge upper plate 20 slowly return to the initial position again at a predetermined time after being bounced.

To ensure that the lid hinge upper plate 20 can move in a stable state when it is popped up, it is preferable that, as shown in fig. 3 and 4, the lid hinge mechanism includes a movable arm assembly 40 and a hinge base plate 30 mounted to the vehicle body frame, the movable arm assembly 40 includes a first arm 41 and a second arm 42 hinged to each other, the first arm 41 is hinged to the lid hinge upper plate 20, and the second arm 42 is hinged to the hinge base plate 30. By providing the movable arm assembly 40, when the lid hinge upper plate 20 is sprung, the first arm 41 and the second arm 42 are relatively pivoted, thereby smoothly raising the lid hinge upper plate 20.

To simplify the structure, the end of the stay 12 may be connected to the cover hinge upper plate 20 by a first arm 41. That is, the stay 12 may be connected to the first arm 41, thereby being indirectly connected to the cover hinge upper plate 20. In order to facilitate fine adjustment of the positional relationship during installation and to avoid jamming of the entire mechanism during actuation, it is preferable that the end of the stay 12 and the first arm 41 form a ball joint structure B. Specifically, one of the first arm 41 and the stay 12 may be provided with a ball socket, and the other of the first arm 41 and the stay 12 may be provided with a ball head fitted with the ball socket.

In the present application, by limiting the limit position (hereinafter referred to as top dead center) of the stay 12 and the lid hinge upper plate 20 after the pop-up by the gas strut device 10, in order to avoid the limit failure of the gas strut device 10 to the top dead center, the first arm 41 and/or the second arm 42 is provided with the pawl 43 for limiting the relative pivoting range of the first arm 41 and the second arm 42. When the relative pivot angle of the first arm 41 and the second arm 42 exceeds a predetermined pivot range, the latch 43 may cause the first arm 41 and the second arm 42 to be caught by each other, thereby restricting the stay 12 and the continued movement of the lid hinge upper plate 20. Specifically, the first arm 41 and the second arm 42 may be provided with the pawl 43, respectively, or the pawl 43 may be provided only on one of the first arm 41 and the second arm 42. To simplify the structure, as shown in fig. 3, the pawl 43 may be provided only on the first arm 41 so that the pawl 43 contacts the second arm 42 to restrict the second arm 42 from continuing to pivot with respect to the first arm 41 when the relative pivot angle of the first arm 41 and the second arm 42 exceeds a predetermined pivot range. To increase the effect of the jamming, a pawl 43 may be provided near the hinge of the first and

second arms

41, 42.

As above, the latch 43 is used to play an auxiliary limit role in case of failure of the upper stop limit of the gas strut device 10, and the latch 43 should be positioned so that the relative pivoting of the first arm 41 and the second arm 42 is at least as far as to enable the stay 12 and the lid hinge upper plate 20 to move to the upper stop. Preferably, the jaw 43 may be provided at a predetermined distance such that the stay 12 and the cover hinge upper plate 20 move a little more than the upper dead point. For example, the second arm 42 is located 1-2mm below the pawl 43 when the brace 12 and the lid hinge upper plate 20 reach top dead center.

In addition, in order to make the cover hinge upper plate 20 move more smoothly, it is preferable that the cover hinge mechanism includes two movable arm assemblies 40 symmetrically disposed as shown in fig. 3 and 4. Specifically, one movable arm assembly 40 may be provided at each side of the stay 12, so that the two movable arm assemblies 40 stably lift the cover hinge upper plate 20 from both sides of the stay 12.

In the present application, the gas strut device 10 may be installed in an appropriate manner, and specifically, as shown in fig. 4, the cylinder tube 11 may include a mounting plate 115 for being mounted to a vehicle body frame, the vehicle body frame being provided with mounting holes, and the mounting plate 115 being provided with mounting holes 115a corresponding to the mounting holes. As shown in fig. 4, a plurality of mounting holes 115a may be provided in a circumferential direction in order to stably mount the gas strut device 10.

As described above, the position of the lid hinge upper plate 20 when not ejected (i.e., the bottom dead center) is also limited by the gas strut device 10, i.e., the lowest position that the strut 12 can reach. To adjust the position of the bottom dead center as needed, the mounting position of the gas supporting apparatus 10 may be adjusted. Preferably, a screw portion 115b protrudes from the center of the mounting plate 115, and a screw hole for engaging with the screw portion 115b is provided on the body frame, whereby the position of the bottom dead center in the vertical direction can be adjusted by screwing the screw portion 115b into the screw hole at a different depth.

In addition, in order to facilitate the installation of the gas strut spring 10 even in the case of a slight angular deviation (particularly, when the bottom dead center position needs to be adjusted, the above-mentioned angular deviation is likely to be caused by screwing the screw portion 115b into the screw hole at a different depth), the installation hole 115a is formed in an arc shape centering on the center of the installation plate 115. Thus, even if a slight angular deviation occurs in the positioning of the gas strut spring 10 before installation, it is possible to correspond to the fitting hole through the arc-shaped installation hole 115a and to fix it by the fastening member passing through both.

In the present application, an initiator may be provided to initiate firing in response to feedback from a sensor for sensing a collision, so that the lid hinge upper plate 20 is popped up. To facilitate a quick response to the action of the detonation, the initiator attachment portion 50 may be located as close as possible to the point where the stay 12 is attached to the lid hinge upper plate 20, for example on the first arm 41 near the point where it is attached to the stay 12.

According to another aspect of the present application, a vehicle is provided, wherein the vehicle comprises the bonnet hinge mechanism of the present application.

The lid hinge upper plate 20 can be quickly sprung into place under the action of an initiator (which detonates in response to a signal from the collision monitoring unit). When needs reset, only need make second cavity C exhaust can, need not to change the cover the hinge mechanism. Therefore, the vehicle of the application gives consideration to the protection function for pedestrians and the maintenance cost of the vehicle.

The following describes the operation of the vehicle of the present application at the time of a front collision according to the illustrated embodiment.

The vehicle controller is electrically connected with a front recognition module for recognizing the collision of pedestrians or other objects with the vehicle.

Under the condition of front collision of the vehicle, the front identification module feeds back a signal to the vehicle control unit, and the vehicle control unit controls the initiator to detonate according to the signal, so that the upper cover hinge plate 20 is driven to bounce. When the cover hinge upper plate 20 bounces to the top dead center, the air supporting device 10 limits the air, and then the air in the second chamber C is slowly exhausted through the air release hole 114, so that the cover hinge upper plate 20 slowly descends to the initial position for reuse.

It will be appreciated that in the event of normal opening of the lid hinge upper panel 20 (e.g., when servicing the engine), the lid hinge upper panel 20 does not pull the stay 12 upward, but rather pivots open about the ball hinge structure B, the air bracing device 10 does not actuate, nor does the movable arm assembly 40 actuate. In addition, in the normal opening condition, even if the stay bar 12 is pulled, since the force of the upper plate 20 of the cover hinge pulling the stay bar 12 is not enough to make the stay bar 12 move rapidly and the second chamber C is depressurized instantaneously to achieve the effect similar to vacuum pumping, the pressure difference between the second chamber C and the outside is not enough to overcome the self weight of the moving part, so that the movement of the moving part is not caused, and the through hole 111 is not opened.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of the technical idea of the present application, many simple modifications can be made to the technical solution of the present application. The present application includes the combination of individual features in any suitable manner. In order to avoid unnecessary repetition, various possible combinations are not described separately in this application. These simple modifications and combinations should also be considered as disclosed in the present application, and all fall within the scope of protection of the present application.

Claims

1. The gas strut device is characterized in that the gas strut device (10) comprises a cylinder barrel (11) and a strut (12) penetrating through the cylinder barrel (11), the strut (12) divides the inside of the cylinder barrel (11) into a first chamber with the strut and a second chamber C which is not provided with the strut (12) and sealed with the strut (12), the cylinder barrel (11) comprises a bottom wall limiting the second chamber C, the bottom wall comprises a fixing part and a moving part, the fixing part is provided with a through hole (111), and the moving part is arranged at the through hole and can move relative to the fixing part to switch between an open state of opening the through hole (111) and a closed state of closing the through hole (111).

2. The gas strut device according to claim 1, wherein said moving portion is provided so as to be able to be held in a position of closing off said through hole by its own weight.

3. Gas bracing device according to claim 2, characterized in that the moving part comprises a flexible plate-like member (112) fixed at one end to the fixed part and a mass body (113) extending from the flexible plate-like member across the through hole (111).

4. Gas bracing device according to any one of claims 1-3, characterized in that the moving portion is provided with a gas relief hole (114) allowing the second chamber to communicate with the outside.

5. A cover hinge mechanism, characterized in that it comprises an initiator connection part (50) for a cover hinge upper plate (20), a vehicle body frame, an air supporting device (10) according to any one of claims 1 to 4 and an initiator for connecting an initiator for bouncing up the cover hinge upper plate (20), the end of the stay bar (12) being connected to the cover hinge upper plate (20), the cylinder tube (11) being fixed to the vehicle body frame (30).

6. The lid hinge mechanism according to claim 5, characterized in that the lid hinge mechanism comprises a movable arm assembly (40) and a hinge base plate (30) mounted to the vehicle body frame, the movable arm assembly (40) comprising a first arm (41) and a second arm (42) hinged to each other, the first arm (41) being hinged to the lid hinge upper plate (20), the second arm (42) being hinged to the hinge base plate (30).

7. The lid hinge mechanism according to claim 6, characterized in that the end of the stay (12) is connected to the lid hinge upper plate (20) by the first arm (41), the end of the stay (12) forming a ball hinge structure with the first arm (41).

8. A lid hinge mechanism according to claim 6 or 7, characterized in that:

the first arm (41) and/or the second arm (42) is provided with a pawl (43) for limiting the relative pivoting range of the first arm (41) and the second arm (42); and/or the presence of a gas in the gas,

the cover hinge mechanism comprises two symmetrically arranged movable arm assemblies (40).

9. A cover hinge mechanism according to claim 5, wherein the cylinder (11) comprises a mounting plate (115) for mounting to the vehicle body frame, the vehicle body frame being provided with mounting holes, the mounting plate (115) being provided with mounting holes (115a) corresponding to the mounting holes, wherein:

the mounting hole (115a) is arc-shaped with the center of the mounting plate (115) as the center of a circle; and/or the presence of a gas in the gas,

a threaded part (115b) protrudes from the center of the mounting plate (115), and a threaded hole for being engaged with the threaded part (115b) is formed in the vehicle body framework.

10. A vehicle, characterized in that the vehicle comprises a bonnet hinge mechanism as claimed in any one of the claims 5-9.