Patent Application
20240190225
This application claims the benefit of Korean Patent Application No. 10-2022-0171622, filed on Dec. 9, 2022, which application is hereby incorporated herein by reference.
Exemplary embodiments of the present disclosure relate to an inner belt mounting structure of a door for a vehicle.
In a door of a vehicle, an inner belt is applied to prevent an external noise and a noise due to a flow of air flowing into an interior of the vehicle from an inner space of the door between an inner panel and an outer panel.
Looking at an upper structure of the door of the vehicle, as shown in
The inner belt 121 and the outer belt 125 have a structure in close contact with the door glass 113 through sealing lips 121c and 125a. In this way, a space between the inner belt 121 and the outer belt 125 is airtight to prevent a noise due to an air flow. Accordingly, an external noise or a noise introduced into the interior of the vehicle from the outside of the door is prevented.
As shown in
As a noise due to an air flow or an external noise is introduced through the gap, quietness in an interior of the vehicle is degraded.
In particular, as the spread of electric vehicles to which internal combustion engines are not applied has recently expanded, a noise introduced through the gap between the inner belt joint 122 and the door frame 114 is relatively loud.
Exemplary embodiments of the present disclosure relate to an inner belt mounting structure of a door for a vehicle. Particular embodiments relate to an inner belt mounting structure of a door for a vehicle, in which the inner belt of the door mounted on a door trim of the vehicle is mounted on the door of the vehicle. Other embodiments relate to an inner belt mounting structure of a door for a vehicle that prevents a gap from being generated between an inner belt and a door of a body in white (BIW) vehicle to achieve uniform sealing performance.
An embodiment of the present disclosure provides an inner belt mounting structure of a door for a vehicle that allows a position of an inner belt to be easily recognized at an inner panel when assembled, allows the inner belt to be mounted at a uniform position, and maintains an assembly position of the inner belt after assembly.
Other objects and advantages of embodiments of the present disclosure can be understood by the following description and become apparent with reference to the described embodiments of the present disclosure. Also, it is obvious to those skilled in the art to which the present disclosure pertains that the objects and advantages of embodiments of the present disclosure can be realized by the means as claimed and combinations thereof.
In accordance with an embodiment of the present disclosure, there is provided an inner belt mounting structure of a door for a vehicle that includes an inner panel provided inside a door of a vehicle and an inner belt which is fitted into an upper end of the inner panel and in which an inner belt joint is formed to be in contact with a frame of the door, wherein an installation groove into which one side of the inner belt is inserted is formed in the inner panel.
The inner belt may include a stopper formed to protrude from a surface of the inner belt toward the inner panel, and the stopper may be inserted into the installation groove.
The stopper may be formed at a position spaced apart from the inner belt joint in a direction opposite to a center pillar of the vehicle.
One side surface of the installation groove may become an inclined portion in which a width of the installation groove becomes narrower toward a lower portion of the installation groove.
The inclined portion may be formed at a side adjacent to the inner belt joint in the installation groove.
The other side surface of the installation groove may become a support for supporting the stopper and is in contact with the stopper to prevent the inner belt from being pushed.
A rear lip mat be formed in the inner belt to protrude from the surface of the inner belt in a length direction of the inner belt and to be in contact with an inner surface of the inner panel.
The rear lip may be positioned in a lower portion of the stopper.
The rear lip may be formed to be in contact with a bottom surface of the stopper.
The stopper and the inner belt joint may each be made of thermoplastic vulcanizates (TPV).
The stopper may be made of a material having hardness that is greater than that of the inner belt joint.
The inner belt may be manufactured by extrusion, and then the inner belt joint and the stopper may be molded by injection.
A surface in contact with the frame in the inner belt joint may be formed to be inclined.
Hereinafter, an inner belt mounting structure of a door for a vehicle according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The inner belt mounting structure of a door for a vehicle according to embodiments of the present disclosure includes an inner panel 11 provided inside a door of a vehicle and an inner belt 21 which is fitted into an upper end of the inner panel 11 and in which an inner belt joint 22 is formed to be in contact with a frame 14 of the door. An installation groove 11a into which one side of the inner belt 21 is inserted is formed in the inner panel 11.
The inner panel 11 and the outer panel 12 constitute the door, and an inner belt 21 and an outer belt 25 are inserted into upper ends of the inner panel 11 and the outer panel 12, respectively. A door glass 13 is installed to be movable up and down between the inner panel 11 and the outer panel 12. The inner belt 21 and the outer belt 25 are provided with sealing lips 21c and 25a which are in close contact with the door glass 13 to achieve sealing.
Since the inner belt 21 is manufactured through extrusion, the inner belt 21 is formed to have the same cross-sectional shape in a length direction of the inner belt 21.
The inner belt 21 includes a fixing portion 21a fitted into and fixed to the upper end of the inner panel 11, a rear lip 21b protruding from the inner belt 21 to be in contact with an inner surface of the inner panel 11, and a sealing lip 21c in close contact with the door glass 13 to achieve airtightness.
The fixing portion 21a is formed in the form of gripping the upper end of the inner panel 11 and is fitted into and fixed to the upper end thereof.
The rear lip 21b is formed in the inner belt 21 to protrude from a surface of the inner belt 21 in a length direction of the inner belt 21 to be in contact with the inner surface of the inner panel 11. The rear lip 21b is in contact with the inner surface of the inner panel 11 to achieve airtightness between the inner belt 21 and the inner panel 11 so that a noise is blocked from being introduced between the inner belt 21 and the inner panel 11.
The sealing lip 21c is in contact with the door glass 13 to prevent moisture from being introduced through the door glass 13.
The inner belt joint 22 in contact with the frame 14 of the door is formed at one side of the inner belt 21. The inner belt joint 22 is made of thermoplastic vulcanizates (TPV) and is in close contact with the frame 14 to achieve airtightness between the inner belt joint 22 and the frame 14.
In particular, a surface of the inner belt 21 in contact with the frame 14 is formed as an inclined portion so that, when the inner belt 21 is mounted in the frame 14, the inner belt 21 is in completely close contact with the frame 14.
In order to allow a mounting position of the inner belt 21 to be easily recognized in the inner panel 11 and prevent the inner belt 21 from being separated from the mounting position, an installation groove 11a inserted into one side of the inner belt 21 is formed in the inner panel 11. In addition, a stopper 23 into which the installation groove 11a is inserted is formed in the inner belt 21. As the stopper 23 is inserted into the installation groove 11a, the inner belt 21 is prevented from being separated from the mounting position.
The stopper 23 is formed in the form of protruding from the surface of the inner belt 21 toward the inner panel 11.
The stopper 23 may be integrally formed with the inner belt joint 22, and preferably, the stopper 23 may be formed separately at a position spaced apart from the inner belt joint 22. That is, the stopper 23 is formed at a position spaced apart from the inner belt joint 22 in a direction opposite to a center pillar of the vehicle. For example, in a front door of the vehicle, the stopper 23 is formed at a front side of the vehicle to be closer to the front pillar than the inner belt joint 22. Conversely, in a rear door of the vehicle, the stopper 23 is formed at a rear side of the vehicle to be closer to a rear pillar than the inner belt joint 22.
The installation groove 11a is formed to allow an operator to easily recognize a position where the inner belt 21 is mounted when the inner belt 21 is mounted and to support the stopper 23 after the stopper 23 is inserted into the installation groove 11a. Accordingly, the installation groove 11a is formed in a trapezoidal shape in which a width thereof becomes narrower toward a lower portion.
Accordingly, one side surface of the installation groove 11a becomes an inclined portion 11ab in which the width of the installation groove 11a becomes narrower toward the lower portion of the installation groove 11a, and the other side surface of the installation groove 11a becomes a support 11aa which comes into contact with the stopper 23 to prevent the inner belt 21 from being pushed and to support the stopper 23.
Due to the inclined portion 11ab, when the inner belt 21 is assembled to the inner panel 11, the stopper 23 is easily inserted and guided to be assembled at a predetermined position.
The inclined portion 11ab is formed at a side adjacent to the inner belt joint 22 in the installation groove 11a.
The support 11aa is in contact with and supports the stopper 23 to allow the inner belt 21 to be assembled at the predetermined position and to prevent the inner belt 21 from being separated from the mounted position after assembly.
The support 11aa is formed at a side opposite to the inclined portion 11ab in the installation groove 11a.
To describe a positional relationship between the stopper 23 and the rear lip 21b, the rear lip 21b is formed to be positioned in a lower portion of the stopper 23. In particular, the rear lip 21b is formed to be in contact with a bottom surface of the stopper 23 to prevent a noise from being introduced through a gap between the installation groove 11a and the stopper 23.
In the inner belt 21, the stopper 23 and the inner belt joint 22 may each be made of TPV. The TPV is an elastomer capable of exhibiting an advantage of thermoplastic rubber. By applying the TPV to the inner belt joint 22, the inner belt joint 22 is in close contact with the frame 14 to achieve airtightness. In addition, since the stopper 23 is supported on the support 11aa to exhibit an effect of supporting the inner belt joint 22 to be in close contact with the frame 14, the airtightness between the inner belt joint 22 and the frame 14 is increased.
The stopper 23 is made of a material having a hardness that is greater than that of the inner belt joint 22.
Meanwhile, in the inner belt 21 and the outer belt 25, the sealing lips 21c and 25a are each made of the TPV.
The inner belt 21 is manufactured by extrusion using polypropylene (PP) as a material, and then the stopper 23 and the inner belt joint 22 are formed by injection molding, and thus the inner belt joint 22 and the stopper 23 are integrally manufactured on one side of the inner belt 21.
In accordance with an inner belt mounting structure of a door for a vehicle according to embodiments of the present invention, when an inner belt is mounted in an inner panel, the inner belt is assembled at a predetermined position of the inner panel so that an assembly dispersion or an assembly failure can be prevented.
Since the inner belt is assembled to the inner panel with uniform assembly quality, an inner belt joint can be in close contact with a frame of the door so that a gap can be prevented from being generated between the inner belt joint and the frame of the door.
Accordingly, noise, vibration, harshness (NVH) performance of the vehicle, in particular, performance related to a noise, can be improved. That is, since a noise introduced into an interior through the inner belt of the door can be blocked, interior quietness can be improved.
While embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present disclosure without being limited to the exemplary embodiments disclosed herein. Accordingly, it should be noted that such alternations or modifications fall within the claims of the present disclosure, and the scope of the present disclosure should be construed on the basis of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2022-0171622 | Dec 2022 | KR | national |
