KR101735811B1 - Mounting structure of cowl cross member - Google Patents
Mounting structure of cowl cross member Download PDFInfo
- Publication number
- KR101735811B1 KR101735811B1 KR1020150130149A KR20150130149A KR101735811B1 KR 101735811 B1 KR101735811 B1 KR 101735811B1 KR 1020150130149 A KR1020150130149 A KR 1020150130149A KR 20150130149 A KR20150130149 A KR 20150130149A KR 101735811 B1 KR101735811 B1 KR 101735811B1
- Authority
- KR
- South Korea
- Prior art keywords
- cross member
- cowl cross
- flange
- mounting structure
- cowl
- Prior art date
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/081—Cowls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/197—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible incorporating devices for preventing ingress of the steering column into the passengers space in case of accident
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/01—Reducing damages in case of crash, e.g. by improving battery protection
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The present invention relates to a mounting structure of a cowl cross member in which one end of a cowl cross member having a hollow tube shape is fitted in a flange of a mounting bracket fixed to a vehicle body, The cow cross member is detachable from the flange through the opening section when an impact is transmitted to the cowl cross member according to a vehicle collision.
According to the structure of the present invention as described above, when a vehicle collision occurs, the cow cross member is detached from the mounting bracket and no rotation moment generated in the conventional structure is generated, thereby preventing deformation of the steering wheel and the steering column.
Description
BACKGROUND OF THE
Vehicle legal safety standards and test safety standards are gradually increasing. In particular, the Insurance Institute for Highway Safety (IIHS) has added a small overlap test to the safety assessment to evaluate vehicle safety.
The Small Overlap test was conducted to determine that only 25% of the front of the vehicle (25% of the vehicle width) collided with the barrier when driving at 40 miles per hour (about 64 km / h) And evaluating the safety of the vehicle by measuring the amount of deformation of the vehicle and the amount of deformation of the vehicle.
On the other hand, in the passenger car, the cowl is a panel component mounted on the vehicle body so as to be connected to the front end of the windshield. The cowl is mounted between the engine room and the vehicle interior and is manufactured to have rigidity higher than a predetermined standard in order to prevent components mounted in the engine room from penetrating into the vehicle interior when a collision occurs in the vehicle.
A general cowl of a passenger car is configured such that an upper panel and a lower panel are coupled to each other, and a
The
That is, the
On the other hand, in the case of such a cowl cross member mounting structure, a development process of the deformation at the time of a small overlap collision is as follows. Deformation occurs in the lower portion of the A-pillar of the vehicle body due to the collision with the barrier of 25% The load is transmitted to the mounted
That is, as shown by arrows in FIG. 1A, when the load applied to the cowling
Accordingly, the
Accordingly, the present invention provides a mounting structure of a cowl cross member that can prevent deformation of a steering wheel and a steering column even in a small overlap collision (so that the airbag can be normally deployed) so as to solve the above-described problems The main purpose is.
According to another aspect of the present invention, there is provided a mounting structure of a cowl cross member in which one end of a cowl cross member having a hollow tube shape is fitted in a flange of a mounting bracket fixed to a vehicle body, And the cowl cross member is detachable from the flange through the opening section when an impact is transmitted to the cowl cross member in response to a vehicle collision.
The flange is formed to have a length (d1 length) in the range of 65% to 75% in the circumferential length (the length of d1 + d2 in Fig. 5) in the case of a complete circular ring shape.
In the present invention, the cowl cross member is fastened to the mounting bracket through a coupling pipe having one end inserted into the cowl cross member and the other end inserted into the flange.
The connection pipe is formed with two stoppers supported on both ends of the open section to prevent rotation, and one or more collapse inducing holes are formed in the connection pipe so that collapse is induced when an impact of a predetermined size or more is applied.
Then, the connection pipe enters into the flange by interference fit and is tightened. A slit may be additionally formed in the coupling tube so that elastic deformation is induced when the flange enters the flange.
According to the structure of the present invention as described above, when a vehicle collision occurs, the cow cross member is detached from the mounting bracket and no rotation moment generated in the conventional structure is generated, thereby preventing deformation of the steering wheel and the steering column. That is, the amount of impact due to the collision is blocked by the departure of the cow cross member, so that the deformation of the steering wheel equipped with the driver's seat airbag is essentially blocked.
In the present invention, a connection pipe is additionally installed between the mounting bracket and the cowl cross member, and the connection pipe is separated from the collapse when a collision occurs, so that a part of the transmitted impact quantity can be buffered.
1A is a view showing a state where a cow cross member is mounted according to a conventional method,
FIG. 1B is an enlarged view of a portion where the cowl cross member and the mounting bracket are mounted in FIG. 1A,
2 is a view showing a state in which a collision occurs in a mounting structure of a cowl cross member according to a first embodiment of the present invention and a cowl cross member is detached through an opening section of the flange,
3 is a view showing a state in which a coupling pipe is fastened between a cowl cross member and a mounting bracket according to a second embodiment of the present invention,
4 is a view showing a state in which a coupling pipe is fastened between a cowl cross member and a mounting bracket according to a second embodiment of the present invention,
5 is a view showing a mounting bracket according to the present invention,
6A and 6B are views showing the front and rear views of the point where the connector is mounted,
7 shows the length (e) of the connecting tube entering the flange and the length (f) of entering the connecting tube at the end of the cowl cross member.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that the present invention can be easily carried out by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.
In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention.
The present invention relates to a cow cross member mounting structure in which one end of a cowl cross member (20) having a hollow tube shape is fitted in a ring-shaped flange (11) of a mounting bracket (10) Reference will now be made in detail to the preferred embodiments of the present invention.
2, in the first embodiment of the present invention, the
That is, the
The
That is, the rotational moment that causes deformation of the steering wheel and / or the steering column is inherently blocked as the
In addition, the present invention further comprises a
That is, as shown in FIG. 7, the connecting
6A and 6B, the
Therefore, when the impact is transmitted to the
According to the structure of the present invention having such a configuration, when the vehicle collision occurs, the
In addition, a
Further, in order to prevent the steering wheel or / and the steering column from being bent, a plurality of reinforcing members for supporting the amount of impact and the moment of rotation transmitted from the cowl cross member are additionally mounted. In the present invention, It is possible to cut off the problem (deformation of the deployment angle of the airbag) of the airbag (without increasing the cost due to the additional installation of the reinforcing member and the weight of the vehicle) since the path to the steering column is blocked in the middle.
For reference, in the specification of the present invention, the length (d2 length) of the
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be apparent to those of ordinary skill in the art.
10: Mounting bracket
11: Flange
13: open section
20: Cow Crossmember
30: Connector
Claims (6)
Wherein the flange has an open section such that the flange is formed in a circular ring shape in which a part of the flange is cut off. When an impact is transmitted to the cowl cross member due to a vehicle collision, the cowl cross member is detachable from the flange through the open section,
Wherein the cowl cross member is fastened to the mounting bracket through a connecting tube having one end inserted into the cowl cross member and the other end inserted into the flange.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150130149A KR101735811B1 (en) | 2015-09-15 | 2015-09-15 | Mounting structure of cowl cross member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150130149A KR101735811B1 (en) | 2015-09-15 | 2015-09-15 | Mounting structure of cowl cross member |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20170032914A KR20170032914A (en) | 2017-03-24 |
KR101735811B1 true KR101735811B1 (en) | 2017-05-16 |
Family
ID=58500523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150130149A KR101735811B1 (en) | 2015-09-15 | 2015-09-15 | Mounting structure of cowl cross member |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101735811B1 (en) |
-
2015
- 2015-09-15 KR KR1020150130149A patent/KR101735811B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR20170032914A (en) | 2017-03-24 |
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GRNT | Written decision to grant |