Patent Application
20240367494
The present disclosure relates to a structure for attaching an inner weatherstrip and an inner weatherstrip used therein.
Automobile doors have an elongated inner weatherstrip attached along the upper edge of a door panel. As this type of technology, there is, for example, Patent Literature 1 below. In Patent Literature 1, a glass inner weatherstrip 5A is attached to the upper edge of a door inner panel 2A. The rear terminal of the glass inner weatherstrip 5A faces a die molding connection portion 4B1 of a glass run 4 with a gap therebetween (paragraph [0014]).
In Patent Literature 1, the glass inner weatherstrip 5A is inserted and attached from above the door inner panel 2A. At this time, the glass inner weatherstrip 5A and the door inner panel 2A are not provided with a positioning structure for determining the attachment position of the glass inner weatherstrip 5A. Therefore, the attachment position of the glass inner weatherstrip 5A has to be finely adjusted according to the operator's sense. This complicates the positioning operation of the glass inner weatherstrip 5A. In addition, there is a possibility that the attachment position of the glass inner weatherstrip 5A differs for each product (vehicle). In particular, the gap between the glass inner weatherstrip 5A and the die molding connection portion 4B1 of the glass run 4 tends to vary.
Therefore, a structure for attaching an inner weatherstrip capable of easily positioning the door front-rear direction position of the inner weatherstrip when the inner weatherstrip is attached to the door panel, and an inner weatherstrip for that purpose are provided.
The present disclosure employs the following means.
(1) A structure for attaching an elongated inner weatherstrip, in which the inner weatherstrip is attached along an upper edge of a door panel of an automobile door, a flange is formed on the upper edge of the door panel, the inner weatherstrip has a vehicle inside sidewall portion, a vehicle outside sidewall portion, and a top wall portion coupling upper edges of the vehicle inside sidewall portion and the vehicle outside sidewall portion, the flange is inserted between the vehicle inside sidewall portion and the vehicle outside sidewall portion, a protrusion portion protruding toward a vehicle inside is formed at a part of the flange, the protrusion portion has a contact surface facing a center side in a longitudinal direction of the flange, a positioning surface extending in a direction intersecting with a longitudinal direction of the inner weatherstrip is provided at a part of the vehicle inside sidewall portion, the positioning surface is formed by recessing at least a part of the vehicle inside sidewall portion facing the protrusion portion toward the vehicle inside, and the contact surface is in contact with the positioning surface.
(2) A structure for attaching an elongated inner weatherstrip, in which the inner weatherstrip is attached along an upper edge of a door panel of an automobile door, a flange is formed on the upper edge of the door panel, the inner weatherstrip has a vehicle inside sidewall portion, a vehicle outside sidewall portion, and a top wall portion coupling upper edges of the vehicle inside sidewall portion and the vehicle outside sidewall portion, the flange is inserted between the vehicle inside sidewall portion and the vehicle outside sidewall portion, a protrusion portion protruding toward a vehicle outside is formed at a part of the flange, the protrusion portion has a contact surface facing a center side in a longitudinal direction of the flange, a positioning surface extending in a direction intersecting with a longitudinal direction of the inner weatherstrip is provided at a part of the vehicle outside sidewall portion, the positioning surface is formed by recessing at least a part of the vehicle outside sidewall portion facing the protrusion portion toward the vehicle outside, and the contact surface is in contact with the positioning surface.
(3) The structure for attaching an inner weatherstrip according to (1) or (2), in which the protrusion portion is formed by cutting and raising a part of the flange.
(4) The structure for attaching an inner weatherstrip according to (3), in which the protrusion portion is formed by cutting and raising a part of the inner door panel that constitutes the flange.
(5) An elongated inner weatherstrip, in which the inner weatherstrip is attached along an upper edge of a door panel of an automobile door, a vehicle inside sidewall portion, a vehicle outside sidewall portion, and a top wall portion coupling upper edges of the vehicle inside sidewall portion and the vehicle outside sidewall portion are provided, the flange formed on the upper edge of the door panel is attached in a state of being inserted between the vehicle inside sidewall portion and the vehicle outside sidewall portion, a protrusion portion protruding toward a vehicle inside and having a contact surface facing toward a center side in a longitudinal direction of the flange is formed at a part of the flange, a positioning surface extending in a direction intersecting with a longitudinal direction of the inner weatherstrip is provided at a part of the vehicle inside sidewall portion, the positioning surface is formed by recessing at least a part of the vehicle inside sidewall portion facing the protrusion portion toward the vehicle inside, and the contact surface is in contact with the positioning surface in a state of being attached to the door panel.
(6) An elongated inner weatherstrip, in which the inner weatherstrip is attached along an upper edge of a door panel of an automobile door, a vehicle inside sidewall portion, a vehicle outside sidewall portion, and a top wall portion coupling upper edges of the vehicle inside sidewall portion and the vehicle outside sidewall portion are provided, the flange formed on the upper edge of the door panel is attached in a state of being inserted between the vehicle inside sidewall portion and the vehicle outside sidewall portion, a protrusion portion protruding toward a vehicle outside and having a contact surface facing toward a center side in a longitudinal direction of the flange is formed at a part of the flange, a positioning surface extending in a direction intersecting with a longitudinal direction of the inner weatherstrip is provided at a part of the vehicle outside sidewall portion, the positioning surface is formed by recessing at least a part of the vehicle outside sidewall portion facing the protrusion portion toward the vehicle outside, and the contact surface is in contact with the positioning surface in a state of being attached to the door panel.
(7) The inner weatherstrip according to (5) or (6), in which the positioning surface is larger than the contact surface.
(8) The inner weatherstrip according to (5), in which at least one end portion in the longitudinal direction has an injection molded portion formed by injection molding, and the other part is an extrusion molded portion formed by extrusion molding.
(9) The inner weatherstrip according to (8), in which, in the vehicle inside sidewall portion, the injection molded portion overlaps a vehicle inside outer surface of one end portion of the extrusion molded portion in the longitudinal direction, and one end surface of the extrusion molded portion in the longitudinal direction serves as the positioning surface.
(10) The inner weatherstrip according to (8), in which, in the vehicle inside sidewall portion, the injection molded portion overlaps the vehicle inside outer surface of one end portion of the extrusion molded portion in the longitudinal direction, a projected piece protrudes from the injection molded portion toward the vehicle outside to cover one end surface of the extrusion molded portion in the longitudinal direction, and one end surface of the projected piece in the longitudinal direction serves as the positioning surface.
(11) The inner weatherstrip according to (6), in which at least one end portion in the longitudinal direction has an injection molded portion formed by injection molding, and the other part is an extrusion molded portion formed by extrusion molding.
In addition, regarding the “door panel” and “flange” in the present disclosure, when the part to which the inner weatherstrip is attached consists only of the inner door panel, the inner door panel and the upper edge flange thereof correspond to the “door panel” and “flange” as they are. However, when the inner door panel is reinforced by stacking reinforcing plates (for example, reinforcement), the concept of “door panel” and “flange” includes the inner door panel, the reinforcing plate, and the flanges on the upper edges thereof.
In addition, in the present disclosure, “recessing” the vehicle inside sidewall portion or the vehicle outside sidewall portion means “providing a recessed part that is not flush” at a part of the vehicle inside sidewall portion or the vehicle outside sidewall portion. The concept includes not only the formation of recess portions or thin portions but also the formation of through-holes.
In the present disclosure, a protrusion portion is formed at a part of the flange and a positioning surface is formed on the inner weatherstrip. With this feature, the door front-rear direction position of the inner weatherstrip can be easily positioned simply by attaching the inner weatherstrip to the door panel in a state where the positioning surface is in contact with the contact surface of the protrusion portion.
When only a part of the flange is cut and raised, the protrusion portion can be easily formed, and the positioning structure will not become complicated. Furthermore, a part of the inner door panel may be cut and raised to form the protrusion portion.
By making the positioning surface larger than the contact surface, the positioning surface can be easily brought into contact with the contact surface.
Since the inner weatherstrip is elongated, the inner weatherstrip is basically molded by extrusion molding. However, when at least one end portion in the longitudinal direction is formed as an injection molded portion, the shape can be made to accurately correspond to the structure around the one end portion in the longitudinal direction.
When one end surface of the extrusion molded portion in the longitudinal direction is used as a positioning surface, the deterioration of appearance can be avoided by overlapping the injection molded portion on the vehicle inside outer surface of one end portion of the extrusion molded portion in the longitudinal direction. This is because the injection molded portion can cover the part where the protrusion portion is in contact with the positioning surface.
By forming a projected piece from the injection molded portion to cover one end surface of the extrusion molded portion in the longitudinal direction and using the one end surface of the projected piece in the longitudinal direction as a positioning surface, it is possible to avoid the formation position of the positioning surface being different for each product. The reason is as follows. The extrusion molded portion may vary in length. Therefore, the door front-rear direction position of one end surface of the extrusion molded portion in the longitudinal direction may vary depending on the product. However, since the projected piece is formed by injection molding, even when the position of one end surface of the extrusion molded portion in the longitudinal direction varies, the positioning surface can be formed at a predetermined position.
The inner weatherstrip 10 is basically an extrusion molded article that has a uniform shape along the entire longitudinal direction thereof. The inner weatherstrip 10 has an approximately inverted U-shaped cross section including a vehicle outside sidewall portion 11, a vehicle inside sidewall portion 12, and a top wall portion 13 coupling the upper edges of both of the sidewall portions 11 and 12 to each other. A holding lip 14 is formed continuously along the longitudinal direction on the inner surface of the vehicle inside sidewall portion 12. A shielding lip 15 is formed continuously along the longitudinal direction on the lower surface of the vehicle inside sidewall portion 12. A seal lip 16 is formed continuously along the longitudinal direction on the outer surface of the vehicle outside sidewall portion 11. A decorative lip 17 is formed continuously along the longitudinal direction at a corner portion between the vehicle outside sidewall portion 11 and the top wall portion 13. In Embodiment 1, two holding lips 14 and two seal lips 16 are formed upper and lower. The holding lip 14 and seal lip 16 may be one or three or more. No lip is formed on the inner surface of the vehicle outside sidewall portion 11. The vehicle outside sidewall portion 11 directly comes into contact with the flange 6 (inner door panel 5a).
In the inner weatherstrip 10, an extrusion molded portion 10p, which will be described later, is made of a material that can be extruded. The vehicle outside sidewall portion 11, the vehicle inside sidewall portion 12, and the top wall portion 13 are made of a material having higher rigidity than each lip. The holding lip 14, the shielding lip 15, the seal lip 16, and the decorative lip 17 are made of a softer material than the vehicle outside sidewall portion 11 and the like.
Thermoplastic elastomer, thermoplastic resin, rubber, or the like can be used for the material of the vehicle outside sidewall portion 11, the vehicle inside sidewall portion 12, and the top wall portion 13. Specific examples include thermoplastic olefin elastomers (TPO), styrene elastomers (TPS), vinyl chloride resins (PVC), polypropylene resins (PP), and ethylene-propylene-diene copolymers (EPDM). Among them, those having a durometer hardness (type D) of HDA 50 to 80 according to JIS K 7215 are preferable.
As materials for the holding lip 14, the shielding lip 15, the seal lip 16, and the decorative lip 17, thermoplastic elastomer, thermoplastic resin, rubber, and the like, which are softer and more elastically deformable than the vehicle outside sidewall portion 11 and the like, can be used. Specific examples include thermoplastic olefin elastomers (TPO), styrene elastomers (TPS), vinyl chloride resins (PVC), polypropylene resins (PP), and ethylene-propylene-diene copolymers (EPDM). Among them, those having a durometer hardness (type A) of HDA 50 to 90 according to JIS K 7215 are preferable.
The inner weatherstrip 10 is attached in a state where the flange 6 of the door panel 5 is inserted between the vehicle outside sidewall portion 11 and the vehicle inside sidewall portion 12. As a result, the inner weatherstrip 10 is located along the upper edge of the door panel 5. In a state where the inner weatherstrip 10 is attached to the door panel 5, the holding lip 14 is in elastic contact with the flange 6 and clamps the flange 6 together with the vehicle outside sidewall portion 11. The shielding lip 15 is in elastic contact with the door panel 5, and the seal lip 16 is in elastic contact with the window panel 3. The decorative lip 17 hides the gap between the inner weatherstrip 10 and the window pane 3.
As shown in
In Embodiment 1, the inner door panel 5a is partially reinforced by overlapping a reinforcement 5b. At the rear end portion of the inner weatherstrip 10, the door panel 5 is composed of the inner door panel 5a and the reinforcement 5b.
The inner weatherstrip 10 is obtained by cutting an extrusion molded article into predetermined lengths. However, as shown in
The injection molded portion 10s is made of a thermoplastic elastomer such as an olefinic thermoplastic elastomer, and preferably has a durometer hardness (type A) of HDD 50 to 80 according to JIS K 7215. The injection molded portion 10s is integrated with the extrusion molded portion 10p by previously setting a part (rear end portion) of the extrusion molded portion 10p in the cavity of the injection molding die and performing insert molding. As shown in
In the vehicle inside sidewall portion 12, the front side of the injection molded portion 10s comes into contact with the vehicle inside outer surface of the extrusion molded portion 10p, and extends parallel to the extrusion molded portion 10p from the contact part toward the rearward of the rear end surface (positioning surface F2) of the extrusion molded portion 10p. At a position separated by a predetermined distance rearward from a rear end surface F2 of the extrusion molded portion 10p, the injection molded portion 10s is located on the vehicle outside and extends parallel to the extrusion molded portion 10p. Further rearward, the injection molded portion 10s is formed in an inclined shape along the door panel 5. In the vehicle inside sidewall portion 12, a step is formed between the vehicle outside side surface of the extrusion molded portion 10p and the vehicle outside side surface of the injection molded portion 10s. As a result, in the vehicle inside sidewall portion 12, a part facing the protrusion portion 5c is recessed toward the vehicle inside, and a positioning surface F2 extending in a direction intersecting with the longitudinal direction of the inner weatherstrip 10 is formed. The size of the positioning surface F2 is larger than the contact surface F1 of the protrusion portion 5c.
When the inner weatherstrip 10 is attached to the flange 6, the flange 6 is inserted between the vehicle outside sidewall portion 11 and the vehicle inside sidewall portion 12 to cover the flange 6 with the inner weatherstrip 10 from above. At this time, by sliding the inner weatherstrip 10 rearward, the positioning surface F2 of the inner weatherstrip 10 comes into contact with the contact surface F1 of the flange 6 (inner door panel 5a). Accordingly, it is possible to easily position the door front-rear direction position of the inner weatherstrip 10.
A different point from Embodiment 1 is that a projected piece 12a protrudes toward the vehicle outside from the injection molded portion 10s to cover the rear end surface of the extrusion molded portion 10p. The rear end surface of the projected piece 12a is used as the positioning surface F2. The positioning surface F2 is also larger than the contact surface F1 of the protrusion portion 5c. In
Although the representative embodiment of the present disclosure has been described above, the present disclosure is not limited to this, and various modifications are possible without departing from the gist of the present disclosure. For example, the protrusion portion 5c may be provided at the center portion or tip end portion of the inner weatherstrip 10 instead of being provided on the rear side of the inner weatherstrip 10. In these cases as well, the contact surface F1 is formed to face the center side in the door front-rear direction, and the positioning surface F2 is formed to face the contact surface F1.
In Embodiment 1, as a method for forming the positioning surface F2 on the vehicle inside sidewall portion 12, the injection molded portion 10s and the extrusion molded portion 10p are connected in a flush state, and then it is also possible to cut a part of the inner side wall portion 12 to make it thinner, or to drill an inner/outer through-hole. In Embodiment 3, as a method for forming the positioning surface F2 on the vehicle outside sidewall portion 11, an inside/outside through-hole may also be drilled at a part of the vehicle outside sidewall portion 11.
When the inner door panel 5a is reinforced by the reinforcement 5b, the reinforcement 5b forming the flange 6 is also cut and raised together with the inner door panel 5a, and the reinforcement 5b and the inner door panel 5a can also form the contact surface F1. When the reinforcement 5b is not located, a part of the inner door panel 5a is cut and raised to form the protrusion portion 5c.
The size of the positioning surface F2 does not necessarily have to be larger than the contact surface F1. It is not always necessary to form the injection molded portion 10s, either.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2021-060063 | Mar 2021 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2022/013117 | 3/22/2022 | WO |
