JP2010228723A - Weather strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip capable of assuring a sealing characteristic at a corner part. <P>SOLUTION: A weather strip 10 is constructed such that a trim part 20 and a hollow seal part 40 are formed by a separate member. A bottom wall groove part 23a opened at the outer surface of a bottom wall 23 formed by a solid material of the trim part 20 and continuous in a longitudinal direction is formed at the bottom wall. The hollow seal part 40 is formed by a hollow part 42, a connecting part 41 extending downward from the hollow part and formed by a solid material, and an extremity end turning part 43 having a sectional size from the extremity end of the connecting part 41 in a width direction larger than that of the connecting part and formed by the solid material. The weather strip is made such that the extremity end turning part 43 is fitted to the bottom wall groove part 23a, the hollow part 42 is abutted against a mating member opposing against a vehicle body opening part and at the same time the extremity end turning part 43 is fitted within the bottom wall groove part 23a in such a way that it can be turned within a predetermined range. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a weather strip to be mounted on a flange at the periphery of a vehicle body opening of an automobile.

Automobiles have openings such as door openings and trunk room openings, and weather strips are attached to the flanges at the periphery of each vehicle body opening to seal between the periphery of the vehicle body opening and a mating member such as a door or trunk lid. ing.
When these weather strips are attached to the periphery of the vehicle body opening, they are attached by inserting a flange at the periphery of the vehicle body opening into a trim portion having a substantially U-shaped cross section of the weather strip.

For example, as shown in FIG. 4, a weather strip 110 is mounted on a flange 7 provided on the periphery 6 of the opening of the vehicle body that faces the periphery of the lid of the rear trunk. Is done.
That is, the weather strip 110 includes a trim portion 120 attached to the flange 7 and a hollow seal portion 140 that is in contact with the back surface of the trunk lid 2 and seals between the trim lid 120 and the hollow seal portion 140. The opening is sealed by abutting against the back surface of 2.

The trim portion 120 is formed of a vehicle outer side wall 121, a vehicle inner side wall 122, and a bottom wall 123 with a substantially U-shaped cross section, and in order to reinforce the holding of the flange 7, The insert 129 is embedded.
In addition, inside the substantially U-shaped cross section of the trim portion 120, the outer flange holding lips 124, 125 and the inner flange holding lips 126, 127 from the inner surfaces of the vehicle outer side wall 121 and the vehicle inner side wall 122 are respectively formed in a cross-sectional C shape. The trim portion 120 extends toward the back side (bottom wall 123 side) of the substantially U-shaped cross section.

  In order to attach the weather strip 110 to the flange 7, the trim 7 is inserted into the flange 7 provided around the opening of the rear trunk into the inside of the substantially U-shaped cross section from above. Install. At the corner portion of the opening of the rear trunk, the flange 7 is formed to bend along the shape of the corner portion, so that the hollow seal portion 140 of the weather strip 110 attached to the corner portion may fall inward. In some cases, it may be crushed and bend and deform, and sufficient sealing performance may not be obtained.

  Therefore, as shown in FIG. 5, there is a structure in which the hollow seal portion 240 of the weather strip 210 attached to the corner portion is inclined with respect to the trim portion 220 in advance by a predetermined angle (α) in consideration of the tilt angle ( For example, see Patent Document 1.) However, it is troublesome to incline and form the hollow seal portion 240 only in the portion to be attached to the corner portion, and also in the attaching operation, the portion of the weather strip 210 formed in an inclined manner coincides with the corner portion of the opening portion. It needs to be installed and takes time.

  In addition, as shown in FIG. 6, the hollow seal portion 340 formed of a sponge material is provided with a door stopper 329 extending from the trim portion 320 formed of a solid material, so that the hollow seal portion 340 is deformed. There is a weather strip 310 for preventing the above (see, for example, Patent Document 2). However, in this case, the deformation of the hollow seal portion 340 itself cannot be sufficiently prevented, the sealing performance may be deteriorated, and the force when closing the trunk lid 2 by the door stopper 329 increases. There is.

  Further, as shown in FIG. 7, a trim portion 420 formed of a solid material and a hollow seal portion 440 formed of a sponge material are separately formed, and then the trim engaging portion 429 formed on the trim portion 420 is formed. There is a weather strip 410 for engaging the seal engaging portion 449 of the hollow seal portion 440 (see, for example, Patent Document 3). However, in this case, the hollow seal portion 440 cannot rotate with respect to the trim portion 420, and is insufficient to prevent deformation of the hollow seal portion 440, and the entire hollow seal portion 440 is made of sponge. Since it is formed, the force for holding the hollow seal portion 440 is weak, and the hollow seal portion 440 may be detached from the trim portion 420 in some cases.

JP-A-10-53076 Japanese Utility Model Publication No. 5-22205 JP 2000-108807 A

  Then, an object of this invention is to provide the weather strip which can ensure a sealing performance even if it attaches to a corner part.

In order to solve the above problems, the present invention of claim 1 is directed to a trim portion having a substantially U-shaped cross section attached to a flange on the periphery of the vehicle body opening, and a vehicle body opening periphery on contact with a mating member facing the vehicle opening. A hollow seal portion for sealing between the mating member and
The trim part has a substantially U-shaped cross section at the vehicle outer side wall, the bottom wall, and the vehicle inner side wall, and flange holding lips extend from the inner surfaces of the vehicle outer side wall and the vehicle inner side wall inside the substantially U-shaped cross section. In the formed weather strip,
The bottom wall formed of the solid material of the trim part is formed with a bottom wall groove that opens to the outer surface and continues in the longitudinal direction.
The hollow seal portion is formed separately from the trim portion, and is formed of a solid material that extends downward from the hollow portion and is formed of a sponge material that comes into contact with a counterpart member facing the vehicle body opening. And a distal end rotating portion having a cross-sectional dimension in the width direction from the distal end of the connecting portion larger than that of the connecting portion and formed of a solid material. Is a weather strip characterized in that it abuts against a mating member facing the vehicle body opening, and the tip rotation portion is fitted in the bottom wall groove so as to be rotatable within a predetermined range.

  According to the first aspect of the present invention, the bottom wall formed of the solid material of the trim portion is formed with a bottom wall groove portion that opens to the outer surface and continues in the longitudinal direction. Thus, the hollow seal portion can be brought into contact with a trunk lid, a back door, or the like, which is a mating member facing the vehicle body opening, to seal between the periphery of the vehicle body opening and the mating member.

  Since the hollow seal portion is formed separately from the trim portion, the hollow seal portion can be rotated with respect to the trim portion, and even if a weather strip is attached to the corner portion, the hollow seal portion and the trim portion can be rotated. The deformation behavior can be separated, and the bending and deformation of the hollow seal portion at the corner portion can be controlled and reduced.

  The hollow seal portion includes a hollow portion formed of a sponge material that abuts a counterpart member facing the vehicle body opening, a connecting portion that extends downward from the hollow portion and is formed of a solid material, and a cross-section from the tip of the connecting portion. It is formed from a tip rotating portion having a shape larger than the connecting portion and formed of a solid material. For this reason, a hollow part can contact | abut flexibly with the other party member which opposes a vehicle body opening part, and can ensure sealing performance along the shape of the other party member. Since the tip rotation portion is held in the bottom wall groove portion, the hollow seal portion is not detached from the trim portion, and the hollow portion can abut against a mating member facing the vehicle body opening. The connecting portion integrally connects the hollow portion and the tip rotating portion, and the hollow seal portion can be inclined.

  The leading end rotating part is fitted into the bottom wall groove part, and the hollow part is in contact with a mating member facing the vehicle body opening, and the leading end rotating part is fitted in the bottom wall groove part so as to be rotatable within a predetermined range. It was. For this reason, when the weather strip is attached to the corner portion, the tip rotating portion rotates in the bottom wall groove portion to reduce the stress applied to the hollow portion, thereby preventing abnormal deformation and rotating within a predetermined range. Therefore, the range of movement of the hollow portion is limited, and the sealing performance can be ensured by ensuring that the hollow portion abuts against a mating member facing the vehicle body opening. Here, the predetermined range of rotation means that when the weather strip is attached to the corner portion, the hollow portion of the hollow seal portion can abut against the trunk lid and the like, and abnormal deformation of the hollow portion is prevented. Thus, the sealing performance can be ensured.

In the present invention of claim 2, the distal end rotating portion is formed in a circular cross section or a circular arc shape,
The bottom wall groove portion is formed by a groove portion holding portion having a circular cross section or a circular arc shape that holds the tip rotating portion, and a groove opening portion that is an opening of the bottom wall groove portion and has a narrower cross section than the groove portion holding portion. A weather strip in which the tip rotating part is fitted to the groove holding part.

According to the second aspect of the present invention, since the tip rotating portion is formed in a circular cross section or a circular arc shape, it can smoothly rotate in the bottom wall groove portion.
Since the bottom wall groove portion has a circular cross-section or circular arc-shaped groove portion holding portion that holds the tip rotation portion, the tip rotation portion can be held in accordance with its shape and the tip rotation portion can be smoothly rotated. it can.

  The shape of the groove opening portion of the bottom wall groove portion is an opening of the bottom wall groove portion, the cross section is formed narrower than the groove portion holding portion, and the tip rotation portion is fitted to the groove portion holding portion. The tip rotation part can be held in the bottom wall groove part, and the tip rotation part can be smoothly rotated, and the deformation of the hollow part can be controlled.

  In the third aspect of the present invention, a groove stepped portion continuous in the longitudinal direction is formed on the inner surface of the bottom wall groove portion, a tip rotating portion stepped portion continuous in the longitudinal direction is formed on the surface of the tip rotating portion, and the tip rotating portion is It is a weather strip formed so that the tip rotating portion stepped portion comes into contact with the groove stepped portion when rotating within a predetermined range within the bottom wall groove and reaching a predetermined range limit.

  In the third aspect of the present invention, a groove step that is continuous in the longitudinal direction is formed on the inner surface of the bottom wall groove, a tip rotation portion that is continuous in the longitudinal direction is formed on the surface of the tip rotation portion, and the tip rotation portion is In the bottom wall groove portion, the tip rotation portion step portion is formed so as to abut on the groove step portion when the predetermined range is reached by rotating within the predetermined range. For this reason, the range in which the tip rotating portion rotates within the bottom wall groove portion is reliably controlled to prevent abnormal deformation of the hollow portion at the corner portion, so that the hollow portion can be reliably attached to the mating member facing the vehicle body opening. The sealing property can be ensured so as to abut against.

  According to a fourth aspect of the present invention, a plurality of groove protruding portions that are continuous in the longitudinal direction are formed on the inner surface of the bottom wall groove portion, and a plurality of tip rotating portion protruding portions that are continuous in the longitudinal direction are formed on the surface of the tip rotating portion. And a weather strip formed so that the groove protrusion and the tip rotation portion protrusion are engaged when the tip rotation portion rotates in the bottom wall groove portion.

  In the present invention of claim 4, a plurality of groove protrusions that are continuous in the longitudinal direction are formed on the inner surface of the bottom wall groove part, and a plurality of tip rotation part protrusions that are continuous in the longitudinal direction are formed on the surface of the tip rotation part. Then, the tip rotating part was formed in the bottom wall groove part so that the groove protruding part and the tip rotating part protruding part were engaged. For this reason, when the tip rotation part rotates in the bottom wall groove part, when the turning force of a predetermined level or more is generated due to the engagement between the groove protrusion part and the tip rotation part protrusion part, Unnecessary rotation of the hollow seal portion other than the corner portion can be prevented, and the sealing performance can be ensured by ensuring that the hollow portion comes into contact with the mating member facing the vehicle body opening.

  According to a fifth aspect of the present invention, in the weather strip, the hollow seal portion is located above the bottom wall of the trim portion, and is attached from above to the flange at the periphery of the vehicle body opening portion. It is a trunk weather strip or a back door weather strip in which the door abuts against the hollow seal portion from above.

  According to the present invention of claim 5, the weather strip has a hollow seal portion located above the bottom wall of the trim portion, is attached from above to the flange at the periphery of the vehicle body opening, and is a trunk lid or back as a mating member. It is a trunk weather strip or a back door weather strip in which the door abuts against the hollow seal portion from above. For this reason, the hollow seal portion is positioned above the bottom wall of the trim portion, and the trunk weather strip or the back door weather strip securely contacts the trunk and the trunk lid, and between the trunk and the trunk lid, and the vehicle body. Rainwater and dust entering from between the periphery of the opening and the back door can be reliably sealed, and noise entering the vehicle can be reliably prevented.

Since the hollow seal portion is formed of a hollow portion formed of a sponge material, a connecting portion formed of a solid material, and a tip rotating portion formed of a solid material, the hollow portion follows the shape of the mating member. Thus, the sealing performance can be ensured, the tip rotating portion is held in the bottom wall groove portion, and the hollow seal portion is not detached from the trim portion.
Since the tip rotation part is fitted in the bottom wall groove part so as to be rotatable within a predetermined range, abnormal deformation of the hollow part is prevented, the movement range of the hollow part is limited, and the hollow part faces the vehicle body opening. Sealing performance can be ensured by reliably contacting the mating member.

FIG. 4 shows a first embodiment of the present invention, and is a cross-sectional view when a weather strip is mounted on a vehicle body, and is a cross-sectional view along the line AA in FIG. 3. FIG. 4 shows a second embodiment of the present invention, and is a cross-sectional view when a weather strip is mounted on a vehicle body, and is a cross-sectional view taken along line AA in FIG. 3. It is a schematic perspective view seen from diagonally above the automobile It is sectional drawing of the conventional weather strip. It is sectional drawing of the other conventional weather strip. It is sectional drawing of the other conventional weather strip. It is sectional drawing of the other conventional weather strip.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows a first embodiment of the present invention, FIG. 2 shows a second embodiment of the present invention, and FIG. 3 is seen from the diagonally upper left side of the automobile. It is a schematic perspective view.
The first embodiment of the present invention will be described by taking as an example a weather strip 10 that is attached to the flange on the peripheral edge of the rear trunk and seals between the trunk lid 2 and the rear trunk. A weather strip that seals between a wide body opening of a car such as a strip, a door opening of a car, a roof opening, etc., and a back door, a side door, a roof door, etc., which are opposing members facing the car body opening. Can be used.

  As shown in FIG. 1, the weather strip 10 according to the first embodiment of the present invention includes a trim portion 20 attached to the flange 7 and a hollow seal portion 40 that contacts and seals the trunk lid 2. The trim part 20 and the hollow seal part 40 are molded separately from each other, and are fitted so as to be rotatable after molding, as will be described later.

  The hollow seal portion 40 includes a hollow portion 42 formed of a sponge material that contacts the trunk lid 2 that is a member that closes the opening of the trunk that is the vehicle body opening portion, and a solid portion that extends downward from the hollow portion 42. The connecting portion 41 and the tip rotating portion 43 formed of a solid material having a circular cross-sectional shape from the tip of the connecting portion 41 and having a larger cross-sectional dimension in the width direction than the connecting portion 41 are formed.

The hollow portion 42 is formed in a hollow shape having a circular, elliptical or substantially rhombic cross section, and is formed of a sponge material as described above.
Since the hollow portion 42 is hollow, it has flexibility, and when the trunk lid 2 is closed, the hollow portion 42 does not deform abnormally as compared with the lip shape, and the trunk lid 2 is reliably fixed. It can be sealed against the position.

Further, when the cross section of the hollow portion 42 is substantially rhombus or oval, when the tip of the hollow portion 42 abuts on the trunk lid 2, the bulging portion of the central portion of the approximately rhombus or oval is bent and bent, It can contact flexibly.
In addition, since the hollow portion 42 is formed of a sponge material, when the hollow seal portion 40 comes into contact with the trunk lid 2 that is a mating member to be sealed, the hollow portion 42 has a large flexibility and can be reliably used according to the shape of the trunk lid 2. The tip can come into contact with the surface, and the sealing performance is high.

  The connecting portion 41 extends from the lower portion of the hollow portion 42 in a plate shape so as to connect the distal end rotating portion 43 and the hollow portion 42. The connecting part 41 can be formed of a solid material. In this case, the rigidity of the connecting portion 41 is high, the position of the hollow portion 42 is stable, and when the hollow portion 42 comes into contact with the trunk lid 2 that is the counterpart member, the contact position is stable and the sealing property is secured. it can.

The tip rotating portion 43 is formed in a circular cross section or a circular arc shape. The connecting portion 41 and the tip rotating portion 43 are formed of a solid material, but the hollow portion 42, the connecting portion 41, and the tip rotating portion 43 are integrally formed.
The tip rotating portion 43 is rotatably fitted in a bottom wall groove portion 23a formed in a bottom wall 23 of the trim portion 20 described later.
In the present embodiment, the tip rotating portion 43 has a circular cross-sectional shape, and a tip rotating portion stepped portion 44 is continuously formed in the longitudinal direction at a portion having a smaller radius than the general portion adjacent to the connecting portion 41. ing.

  The trim portion 20 has a substantially U-shaped cross section including a vehicle outer side wall 21, a vehicle inner side wall 22, and a bottom wall 23. In the present embodiment, inserts made of bone pieces such as metal plates are not embedded in the walls of the vehicle outer side wall 21, the vehicle inner side wall 22, and the bottom wall 23, but a hard material of rubber or thermoplastic elastomer. It is formed with. However, the insert may be embedded in the inside of the vehicle outer side wall 21, the vehicle inner side wall 22, and the bottom wall 23. The vehicle outer side wall 21 and the vehicle inner side wall 22 will be described later.

A bottom wall 23 formed of a solid material of the trim portion 20 is formed with a bottom wall groove portion 23a which is an outer surface and opens upward in FIG.
The bottom wall groove 23a is formed in a circular section or arc-shaped groove section holding section 23e corresponding to the shape of the bottom rotating section 43 and an opening portion of the bottom wall groove section 23a. From the groove section holding section 23e, Is formed from a groove opening 23d having a narrow cross section in the width direction.

  The tip rotating portion 43 is held in the groove holding portion 23e of the bottom wall groove 23a. The groove holding portion 23e has a shape corresponding to the cross-sectional shape of the tip rotating portion 43 so as to hold the tip rotating portion 43, and is formed in a circular cross section or a circular arc shape. For this reason, the front-end | tip rotation part 43 can be hold | maintained and the front-end | tip rotation part 43 can be smoothly rotated within the groove part holding part 23e.

  The groove opening 23d is an opening of the bottom wall groove 23a and has a narrower cross section than the groove holding part 23e. For this reason, the tip rotation part 43 does not come off from the bottom wall groove part 23a. Further, when the distal end rotating portion 43 is fitted in the groove opening 23d, the connecting portion 41 of the hollow seal portion 40 is positioned in the groove opening 23d. For this reason, when the tip end rotating part 43 is held in the groove part holding part 23e and the tip end rotating part 43 rotates, the connecting part 41 can tilt the hollow part 42 to control the deformation of the hollow part 42.

  On both sides of the inner surface (surface on the groove holding portion 23e side) of the groove opening 23d, a groove step 23b that is continuous in the longitudinal direction is formed. Abut. A space is formed between the groove step 23 b and the tip rotation portion step 44. For this reason, the front-end | tip rotation part 43 can rotate by the angle of the predetermined range within the groove part holding part 23e. The predetermined range means that when the weather strip 10 is attached to the corner portion, the hollow portion 42 of the hollow seal portion 40 can contact the trunk lid 2 and the like, and abnormal deformation of the hollow portion 42 is prevented. Thus, the sealing performance can be ensured.

  Since the groove step 23b that is continuous in the longitudinal direction is formed on the inner surface of the bottom wall groove 23a, and the tip rotation portion step 44 that is continuous in the longitudinal direction is formed on the surface of the tip rotation portion 43, the tip rotation portion 43 is the bottom wall groove. In 23a, when it rotates within a predetermined range and reaches a predetermined range limit, the tip rotating portion step 44 comes into contact with the groove step 23b, and the rotation stops. For this reason, the range in which the tip rotation part 43 rotates within the groove holding part 23e of the bottom wall groove part 23a is reliably controlled, and the hollow part 42 is reliably attached to the trunk lid 2 which is the counterpart member facing the vehicle body opening. Sealing performance can be ensured by contacting.

  In the present embodiment, the vehicle outer side wall 21, the bottom wall 23, and the vehicle inner side wall 22 can be formed of rubber or a thermoplastic elastomer and a hard material having an IRHD (International Rubber Hardness) 70 to 90. In this case, the strength of the bottom wall 23 is high, and the tip rotating portion 43 can be reliably held in the bottom wall groove 23a. Furthermore, the rigidity of the trim part 20 as a whole is increased, and even when the insert is not embedded, the force for clamping the flange 7 between the vehicle outer side wall 21 and the vehicle inner side wall 22 is large.

  On the inner surface of the vehicle outer side wall 21, as in the conventional case, a first vehicle outer flange holding lip 24 and a second vehicle outer flange holding lip 25 are directed inward from the opening side toward the inside (in the direction of the bottom wall 23). Similarly, a first vehicle inner side flange holding lip 26 and a second vehicle inner side flange holding lip 27 are formed on the inner surface of the vehicle inner side wall 22 in a substantially U-shaped cross section (in the direction of the bottom wall 23). ) In a diagonal direction.

  For this reason, when the flange 7 is inserted into the trim portion 20, the first vehicle outer side flange holding lip 24 and the second vehicle outer side flange holding lip 24 that are two each from both the vehicle outer side wall 21 and the vehicle inner side wall 22 are retained. The flange 7 can be stably held by the lip 25 and the first vehicle inner side flange holding lip 26 and the second vehicle inner side flange holding lip 27.

  The front end of the second vehicle outer side flange holding lip 25 is positioned closer to the bottom wall 23 than the front end of the second vehicle inner side flange holding lip 27, and the front end of the second vehicle inner side flange holding lip 27 is the first vehicle outer side flange holding lip 27. 24 and the second vehicle outer flange holding lip 25 so as to be located between the first vehicle outer flange holding lip 26 and the second vehicle inner flange holding lip 24. It is extended and formed so that it may be located between the front-end | tips of the lip | rip 27. FIG.

  Therefore, the first vehicle outer flange holding lip 24 and the second vehicle outer flange holding lip 25 are closer to the bottom wall 23 side than the first vehicle inner flange holding lip 26 and the second vehicle inner flange holding lip 27, respectively. In particular, when the trim portion 20 rotates toward the vehicle interior and falls, the second vehicle outer flange holding lip 25 can be stretched against the flange 7 and the weather strip 10 falls to the vehicle interior. Can be prevented.

  When the hardness of the vehicle outer side wall 21 and the vehicle inner side wall 22 is high, the vehicle outer side flange holding lips 24, 25 and the vehicle inner side flange holding lips 26, 27 are formed of a solid material. The bottom wall 23 and the vehicle interior side wall 22 are preferably formed lower in hardness. In this case, the flange 7 is firmly clamped by the vehicle outer side wall 21, the bottom wall 23 and the vehicle inner side wall 22, and the vehicle outer flange holding lips 24, 25 and the vehicle inner flange holding lips 26, 27 are flexibly attached to the flange 7. Even if there is unevenness on the surface of the flange 7 due to contact, the flange 7 can be securely held and sealed.

  The vehicle outer flange holding lips 24, 25 and the vehicle inner flange holding lips 26, 27 are formed of a solid material and have an IRHD (international rubber hardness) of 65 to 75 degrees. In this case, even if there is unevenness on the surface of the flange 7, it has sufficient flexibility to be able to flexibly contact the flange 7 and can have sufficient rigidity to hold the flange 7. . When the angle is less than 65 degrees, the holding force of the flange 7 decreases, and when the angle exceeds 75 degrees, the force for inserting the trim portion 20 into the flange 7 increases.

  A body seal lip 28 made of a relatively thick thick and generally uniform sponge material is formed obliquely downward from near the front end of the outer surface of the vehicle outer side wall 21 on the opening side. Therefore, when the body seal lip 28 comes into contact with the vehicle body opening peripheral edge 6, the tip can be brought into line contact, and the force pressed by the tip is large and the sealing property is good. Accordingly, rainwater, dust, noise and the like are prevented from entering the vehicle interior from the trim portion 20 through the flange 7 from the vehicle body opening periphery 6 and the space between the vehicle body opening periphery 6 and the weather strip 10 is sealed. be able to.

  Further, when the body seal lip 28 is formed with substantially the same thickness from the base to the tip, the elasticity of the body seal lip 28 is improved when the tip of the body seal lip 28 comes into contact with the peripheral edge 6 of the vehicle body opening. Thus, the force with which the front end presses the vehicle body opening peripheral edge 6 is strong, and the sealing property is good. The body seal lip 28 is formed of a sponge material. Therefore, the flexibility of the body seal lip 28 is increased, and the sealing performance can be ensured by following the unevenness and deformation of the vehicle body opening periphery 6.

  A sub-body seal lip 29 extends downward from the vicinity of the front end of the inner surface of the vehicle outer side wall 21 on the opening side. As shown in FIG. 1, the sub body seal lip 29 is formed in a straight line and is shorter and smaller than the body seal lip 28 and the first vehicle outer flange holding lip 24. Therefore, when the weather strip 10 is mounted on the flange 7, it comes into contact with the curved portion of the connecting portion between the root of the flange 7 and the peripheral edge 6 of the vehicle body opening.

Since the sub-body seal lip 29 is small and formed, the sub-body seal lip 29 can be closely adhered and deformed along the curved shape at the base of the flange 7. Rainwater or the like that has passed through can be reliably prevented from entering by the sub-body seal lip 29 and can be sealed from noise and the like, thereby further improving the sealing performance.
When the sub-body seal lip 29 is formed of a sponge material, the flexibility is improved and the sealing performance can be ensured by following the unevenness and deformation of the base of the flange 7.

A cover seal lip 30 is formed at the lower portion of the vehicle interior side wall 22 of the vehicle interior side wall 22 so as to curve downward in the vehicle interior direction. After the weather strip 10 is mounted on the flange 7, the cover seal lip 30 covers end portions of the vehicle interior panel, garnish (not shown), panel (not shown), etc. provided in the vehicle interior. It is arranged and seals between the weather strip 10 and the garnish, the panel, etc., and covers the gap to improve the appearance.
When the cover seal lip 30 is formed of a sponge material, the flexibility is improved, and the sealing performance can be secured by following the change in the gap between the garnish and the panel.

  As shown in FIG. 1, a caulking member 50 may be attached to the inner surface of the bottom wall 23 inside the trim portion 20. In this case, when the tip of the flange 7 is inserted into the caulking member 50, the rust prevention and sealing performance of the flange 7 can be improved.

Next, a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the shape of the distal end rotating portion 43 of the hollow seal portion 40 and the bottom wall groove portion 23a of the bottom wall 23 of the trim portion 20 are different, and the other portions are the same, so the description of the same portions is omitted. Different parts will be described.

  In the second embodiment, the groove holding portion 23e of the bottom wall groove 23a is formed in a circular or arc shape in cross section, and a plurality of groove protruding portions 23c continuous in the longitudinal direction are formed on the inner surface thereof. Yes. Similarly, a plurality of tip rotating portion protrusions 45 continuous in the longitudinal direction are formed on the surface of the tip rotating portion 43 of the hollow seal portion 40. When the leading end rotating portion 43 rotates in the groove holding portion 23e of the bottom wall groove 23a, the groove protruding portion 23c and the leading end rotating portion protruding portion 45 are engaged.

  By controlling the engagement allowance between the groove protrusion 23c and the tip rotation portion protrusion 45, the turning force at which the tip rotation portion 43 starts to rotate is controlled to a predetermined value or more, and the hollow portion 42 is a corner portion. It is possible to prevent an abnormal deformation that turns unnecessarily in the case other than the above, and to ensure that the hollow portion 42 comes into contact with the trunk lid 2 that is a counterpart member facing the vehicle body opening so as to ensure the sealing performance.

  In the present embodiment, stepped portions are formed at both ends of the bottom wall groove 23 a and the tip rotating portion 43 to control the rotation range of the tip rotating portion 43, or the bottom wall groove 23 a and the tip rotating portion 43. A plurality of ridges are formed and controlled on the surface. However, a groove extending in the longitudinal direction and having a predetermined width in the width direction is provided on the inner surface of the bottom wall groove portion 23a, and a protrusion that fits in the groove is formed on the surface of the distal end rotating portion 43. By enabling the rotation of the tip rotating part 43, the turning range of the tip rotating part 43 can be controlled.

  In the molding of the weather strip 10 of the present invention, synthetic rubber and thermoplastic elastomer are used. For example, EPDM rubber can be used for synthetic rubber, and polyolefin-based elastomer can be used for thermoplastic elastomer. When EPDM rubber and olefinic thermoplastic elastomer are used, co-extrusion molding can be performed using the same type of material, and a product with good weather resistance can be obtained. Moreover, since it is the same olefin resin / rubber, it can be recycled without separation, and an easily recyclable product can be obtained.

The hollow seal portion 40 and the trim portion 20 of the weather strip 10 are separately molded by an extrusion molding machine. In the case of synthetic rubber, after being extruded, the hollow seal portion 40 and the trim portion 20 are conveyed to a vulcanizing tank and heated by hot air or high frequency to vulcanize. Is done. In the case of a thermoplastic elastomer, it is cooled and solidified.
Then, it is cut into a predetermined length and manufactured. Thereafter, the weather strip 10 is manufactured by fitting the distal end rotating portion 43 of the hollow seal portion 40 into the bottom wall groove portion 23 a of the trim portion 20.

6 Car body opening periphery 7 Flange 10 Weather strip 20 Trim part 23 Bottom wall 23a Bottom wall groove 23b Groove step 23c Groove protrusion 23d Groove opening 23e Groove holding part 40 Hollow seal part 41 Connecting part 42 Hollow part 43 Tip Rotating part 44 Tip rotating part step 45 Tip rotating part ridge part

Claims (5)

A trim portion having a substantially U-shaped cross section that is attached to a flange at the periphery of the vehicle body opening, and a hollow seal portion that abuts against a mating member facing the vehicle body opening and seals between the periphery of the vehicle body opening and the mating member ,
The trim portion has a substantially U-shaped cross section at the vehicle outer side wall, the bottom wall and the vehicle inner side wall, and a flange holding lip extends from the inner surfaces of the vehicle outer side wall and the vehicle inner side wall inside the substantially U-shaped cross section. In the weather strip formed
The bottom wall of the trim part is formed with a bottom wall groove that opens to the outer surface and continues in the longitudinal direction,
The hollow seal portion is formed separately from the trim portion, a hollow portion formed of a sponge material that abuts against a counterpart member facing the vehicle body opening, and a solid material extending downward from the hollow portion And a tip rotating part formed of a solid material having a cross-sectional dimension in the width direction from the tip of the connecting part that is larger than the connecting part, and the tip rotating part is formed of the bottom wall groove part. The hollow portion is in contact with a mating member facing the vehicle body opening, and the tip rotation portion is fitted in the bottom wall groove so as to be rotatable within a predetermined range. Weather strip. The tip rotating part is formed in a circular cross-section or a circular arc cross-section,
The bottom wall groove includes a circular section or arc-shaped groove section holding section that holds the tip rotating section, and an opening in the bottom wall groove section that has a narrower cross section than the groove section holding section. The weather strip according to claim 1, wherein the tip rotation portion is fitted into the groove holding portion.   A groove step portion that is continuous in the longitudinal direction is formed on the inner surface of the bottom wall groove portion, a tip rotation portion step portion that is continuous in the longitudinal direction is formed on the surface of the tip rotation portion, and the tip rotation portion is in the bottom wall groove portion. 3. The weather strip according to claim 1 or 2, wherein the tip rotating portion step is brought into contact with the groove step when the predetermined range is reached by rotating within a predetermined range.   A plurality of groove protruding portions that are continuous in the longitudinal direction are formed on the inner surface of the bottom wall groove portion, and a plurality of tip rotating portion protruding portions that are continuous in the longitudinal direction are formed on the surface of the tip rotating portion, and the tip rotating portion is The weather strip according to claim 1 or 2, wherein the groove projecting portion and the tip rotating portion projecting portion are engaged with each other when rotating in the bottom wall groove portion.   The weather strip has a hollow seal portion located above the bottom wall of the trim portion, is attached from above to the flange on the periphery of the vehicle body opening, and the trunk lid or back door as the mating member is hollow. The weather strip according to any one of claims 1 to 4, wherein the weather strip is a trunk weather strip or a back door weather strip that comes into contact with the seal portion from above.

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