JP7100551B2 - Door weather strip - Google Patents

Description

The present invention relates to a sash on the upper side of an automobile door and a door weather strip attached to a flange on a vertical side.

As shown in FIG. 11, the seal between the rear door 300 of the automobile 100 and the peripheral edge of the vehicle body opening is an opening trim attached to the door weather strip 500 attached to the outer periphery of the door frame or the like and the flange on the peripheral edge of the vehicle body opening. It is made by the weather strip 510. Further, the seal between the door glass 400 and the rear door 300 is made by a glass run 520 attached to a channel on the inner circumference of the door frame. The same member as described above is used for the seal between the front door 200 and the peripheral edge of the vehicle body opening of the front door 200.

Further, a first door weather strip 600 that seals between the upper part of the vehicle body opening and the door upper side 310 is attached to the door upper side 310 of the rear door 300, and is above the belt line of the front door vertical side 320. When the rear door 300 is closed, it comes into contact with the inside of the vehicle on the rear vertical side portion 210 of the front door 200, and the front door vertical side portion 320 of the rear door 300 and the rear vertical side portion of the front door 200. A second door weather strip 700 that seals between 210 is assembled. The first door weather strip 600 and the second door weather strip 700 are installed in order to suppress noise from the outside of the vehicle from entering the vehicle and to improve the quietness inside the vehicle. In FIG. 11, the front end portion of the first door weather strip 600 and the upper end portion of the second door weather strip 700, that is, the front upper corner portion of the rear door 300 are not connected.

By the way, in the door weather strip 500, the first door weather strip 600 and the second door weather strip 700, there is a problem that misalignment is likely to occur at a portion assembled to a corner portion of a door peripheral edge. Therefore, in Patent Document 1, as shown in FIG. 12, regarding the door weather strip, a mold forming welt portion 820 is fitted to a horizontal flange 810 formed outward on the upper end edge of the door panel 800, and a vertical end surface contact portion 830 is provided. The insert horizontal portion 860, which is a corner portion of the weather strip and is embedded in the mold forming welt portion 820, is fixed to the vertical sash portion 840 by the clip 900 from the corner end portion of the welt portion 820. The rigidity of the mold forming welt portion 820 is increased by integrally connecting the insert vertical portion 870 to be embedded over the vertical end face contact portion 830 and fixing it to the vertical sash portion 840 with a clip 900.

Japanese Unexamined Patent Publication No. 9-123762

Regarding the 1st door weather strip 600 and the 2nd door weather strip 700, the 2nd door is for improving the NV (noise and vibration) performance while improving the positional deviation in the portion assembled at the corner of the door peripheral edge. The weather strip 700 is extended to the lower part of the door vertical side portion 320, and the second door weather strip 700 of the front door vertical side portion 320 and the first door weather strip 600 on the door upper side portion 310 side are extended to the lower part. , There is a need to integrate the rear door 300 at the upper front corner.

However, the front end of the first door weather strip 600 and the upper end of the second door weather strip 700 are simply overlapped, or the upper end of the second door weather strip 700 on the first door weather strip 600 side is a double structure. In the structure that sandwiches the front end portion of the first door weather strip 600, there is a problem that the overlapped portion is peeled off when a force is applied to the overlapped portion, for example, when the overlapped portion is touched and a tensile stress is generated in the overlapped portion.

Further, the method of integrally molding the second door weather strip 700 and the first door weather strip 600 extended to the lower part has a problem that the handling becomes very poor at the time of assembling work to the vehicle. It should be noted that the problem of misalignment in the portion assembled to the corner portion cannot be solved only by the integral molding alone.

On the other hand, in the mounting structure of Patent Document 1 described above, especially when the door material is aluminum alloy, the workability when forming the clip mounting hole in the flange of the vertical side of the door on the front side is poor, and the door is fixed by the clip. Even when applied, there is a problem that it is difficult to improve the force for fixing the door weather strip.

This is because aluminum alloys have lower material elongation, n-value, γ-value, and Young's modulus than steel materials, so even if the shape can be formed with conventional steel sheets, cracks, wrinkles, and shape freezeability (springback). This is because problems such as the above may occur, and it is difficult to form the same as steel sheets.

In order to solve the above problems, the present invention of claim 1 separately separates the first weather strip attached to the sash on the upper side of the door and the second weather strip attached to the flange on the vertical side of the door. A door weather strip that is manufactured and assembled to the periphery of the door to be integrated. A molding end cap is attached to the end of the sash, and the second weather strip is a fixing portion fixed to the molding end cap. The second weather strip has an engaging portion closer to the upper end than the fixing portion, and the second weather strip is fixed to the molding end cap with a clip at the fixing portion, and the engaging portion of the second weather strip is molded. It is a door weather strip characterized in that it engages with and is fixed to a molding end cap claw portion formed on an end cap and / and a first weather strip claw portion formed at an end portion of the first weather strip.

In the present invention of claim 1, the first weather strip to be attached to the sash on the upper side of the door and the second weather strip to be attached to the flange on the vertical side of the door are separately manufactured, and the second weather strip is A fixing portion fixed to the molding end cap and an engaging portion closer to the upper end than the fixing portion are provided, and the second weather strip is clipped to the molding end cap at the fixing portion and is fixed to the molding end cap. The engaging portion of the second weather strip is engaged and fixed to the molding end cap claw portion formed on the molding end cap and / and the first weather strip claw portion formed on the end portion of the first weather strip. Therefore, by forming a mounting hole in the molding end cap, which is easier to process than the flange, and fixing the mounting hole, the fixing force between the door and the second door weather strip can be improved.

Further, in the second weather strip, since it is engaged with the first weather strip on the upper end side from the position clipped to the molding end cap, the fixing force between the first door weather strip and the second weather strip is improved. be able to. Therefore, the fixing force between the door and the first door weather strip and the second weather strip can be improved, and the problem of misalignment in the portion assembled to the corner portion of the door can be solved.

Further, the first weather strip to be attached to the sash on the upper side of the door and the second weather strip to be attached to the flange on the vertical side of the door are separately manufactured and integrated by engaging with the above. Therefore, even when the second weather strip extending to the lower part of the vertical side of the door is used, the handling at the time of assembling work to the vehicle is improved.

According to the second aspect of the present invention, the first weather strip has a connecting portion that engages with the main body portion and the second weather strip, the main body portion has a lip portion and a base portion, and the connecting portion is a main body portion. This is the first weather strip whose hardness is lower than that of the base of the strip.

In the present invention of claim 2, the first weather strip has a connecting portion that engages with the main body portion and the second weather strip, the main body portion has a lip portion and a base portion, and the connecting portion is an overall portion. In addition, the hardness is lower than that of the base of the main body, that is, it is made of a soft material. As a result, the connection portion can be slightly extended for work. Therefore, when the first weather strip claw portion is engaged with the engaging portion of the second weather strip fixed to the molding end cap and fixed, or the first Workability is improved when adjusting the position, such as when fixing the weather strip to the sash on the upper side of the door with a clip. Further, since the base portion of the main body portion has a higher hardness than the connecting portion, it is difficult to stretch and it is difficult to come off when assembled to the sash.

The present invention of claim 3 is a door weather strip having a resin insert at the connection portion of the first weather strip. In the present invention of claim 3, since the connecting portion of the first weather strip has a resin insert, the engaging portion of the second weather strip may be engaged with and fixed to the claw portion of the first weather strip. The hardness of the connecting portion can be ensured while maintaining the workability when the first weather strip is fixed to the sash on the upper side of the door with a clip. As a result, even when a force is applied to the connecting portion, deformation of the connecting portion can be suppressed and positional deviation at the corner portion can be prevented.

According to the fourth aspect of the present invention, the first weather strip is a door weather strip that is clipped to a sash on the upper side of the door at a connection portion. In the present invention of claim 4, since the first weather strip is fixed to the sash on the upper side of the door with a clip at the connection portion, the first weather strip and the door can be fixed reliably and easily. can.

According to the fifth aspect of the present invention, the material of the door is a door weather strip made of an aluminum alloy. Here, the aluminum alloy as the material of the door means an alloy in which silicon (Si), copper (Cu), magnesium (Mg), etc. are contained in aluminum (Al) in an amount of about several%, and is a typical aluminum alloy. Examples thereof include 2000 series (Al-Cu series), 5000 series (Al-Mg series), and 6000 series (Al-Mg-Si series).

In the present invention of claim 5, since the material of the door is an aluminum alloy, the flange on the vertical side of the door is not directly processed, and the second weather strip is a molding end cap that is easier to process than the flange. By forming a mounting hole for the clip in the door, fixing it with the clip, and fixing the first weather strip to the aluminum alloy sash on the upper side of the door with the clip, the fixing between the door weather strip and the door is surely performed. be able to. Therefore, even when the material of the door is an aluminum alloy, it is possible to prevent the positional deviation at the corner portion.

The second weather strip is clipped to the molding end cap at the fixing portion, and the engaging portion of the second weather strip is the molding end cap claw portion / / and the first weather strip formed on the molding end cap. Since it is engaged with and fixed to the first weather strip claw portion formed at the end portion of the door, the fixing force between the door and the second door weather strip can be improved.

The second weather strip is engaged with the first weather strip at the upper end side from the position clipped to the molding end cap, thereby improving the fixing force between the door and the first door weather strip and the second weather strip. This makes it possible to solve the problem of misalignment in the portion assembled at the corner of the door. Further, the first weather strip and the second weather strip can be easily integrated.

The first weather strip has a connecting portion that engages with the main body portion and the second weather strip, and the connecting portion has a lower hardness than the main body portion. When the engagement part of the second weather strip fixed to the molding end cap is engaged and fixed to the first weather strip claw part, or when the first weather strip is fixed to the sash on the upper side of the door with a clip. Workability is improved when adjusting the position such as in the case.
Furthermore, since the connection part has a resin insert, the hardness of the connection part can be secured while maintaining the workability shown on the left, and even when a force is applied to the connection part, the connection part is deformed. It can be suppressed and the misalignment of the second weather strip can be prevented.

Since the first weather strip is clipped to the sash on the upper side of the door at the connection portion, the door weather strip and the door can be fixed reliably and easily.

It is a figure which looked at the rear door of the automobile used in embodiment of this invention from the inside of a vehicle. It is a side view of the 1st weather strip used in embodiment of this invention. It is an enlarged view of the main part of the 1st weather strip used in embodiment of this invention, and is the perspective view seen from the inside of a vehicle. It is an enlarged view of the main part of the 1st weather strip used in embodiment of this invention, and is the perspective view seen from the outside of a vehicle. It is a side view of the 2nd weather strip used in embodiment of this invention, (a) is an overall view, (b) is an enlarged view of part C of (a). FIG. 3 is a sectional view taken along the line AA of the second weather strip used in the embodiment of the present invention. It is a BB sectional view of the 2nd weather strip used in embodiment of this invention. It is a side view when the 1st weather strip and the 2nd weather strip used in embodiment of this invention are attached to a door. FIG. 8 is a cross-sectional view taken along the line XX in FIG. 8, which is a cross-sectional view corresponding to the same position as in FIG. FIG. 8 is a sectional view taken along the line YY in FIG. 8, which is a sectional view corresponding to the same position as in FIG. 7. It is a figure seen from the inside of a car when the rear door of a car is opened. This is a conventional method for fixing a corner portion of a weather strip (Patent Document 1).

An embodiment of the present invention will be described with reference to FIGS. 1 to 10. The material of the rear door 3 is an aluminum alloy. Although FIGS. 1 to 10 show the rear door 3 on the right side of the vehicle, the present embodiment can also be applied to the rear door on the left side. Further, although this embodiment is a hinge type door, it can also be applied to a slide type door.

As shown in FIG. 1, the seal between the rear door 3 of the automobile and the peripheral edge of the vehicle body opening is attached to the door weather strip 5 and / or the flange on the peripheral edge of the vehicle body opening attached to the outer periphery of the door frame or the like. It is made by an opening trim weather strip (not shown). Further, the seal between the door glass 4 and the rear door 3 is made by a glass run 7 attached to a channel on the inner circumference of the door frame.

Further, on the door upper side 31 side of the rear door 3, a first weather strip 8 that seals between the door upper side 31 and the upper part of the vehicle body opening when the rear door 3 is closed is assembled, and the door vertical side portion. On the 32 side, the front door vertical side portion 32 of the rear door 3 and the rear vertical side portion of the front door (not shown) are in contact with the inside of the vehicle, and the front door vertical side portion 32 of the rear door 3 and the rear vertical side portion of the front door are abutted. A second weather strip 9 is assembled to seal the door. The second weather strip 9 is formed and assembled over the entire area of the door vertical side portion 32 on the front side of the rear door 3.

First, the first weather strip 8 used in the embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 2, the first weather strip 8 is composed of a connecting portion 81 and a main body portion 82. The shape follows the shape of the door upper side portion 31 of the rear door 3, and is assembled inside the vehicle of the door upper side portion 31 of the rear door 3 as shown in FIG. Further, as shown in FIGS. 3 and 4, the main body portion 82 has a base portion 87 and a lip 83, and the lip 83 formed on the connection portion 81 and the main body portion 82 is located above the vehicle body opening. It abuts and seals between the upper part of the vehicle body opening and the first weather strip 8.

The base portion 87 of the main body portion 82 was made of EPDM (ethylene propylene rubber) solid rubber, and the connection portion 81 was made of EPDM sponge rubber, which was softer than the main body portion 82. In addition, EPDM sponge rubber was used for the lip 83 of the connection portion 81 and the main body portion 82.

As shown in FIGS. 2 and 3, the connection portion 81 is continuously formed from the main body portion 82, and has a shape in which the front end portion protrudes downward when viewed from the inside of the vehicle. The cross section is inverted L-shaped. A first weather strip claw portion 84 for fixing the first engaging arm 92 of the second weather strip 9, which will be described later, is formed at the front end portion.

Further, the connecting portion 81 has a mounting hole 85 for fixing the first weather strip 8 to the mounting hole 33 of the connecting portion mounting portion 30 formed so as to project from the sash of the door upper side portion 31 of the rear door 3 with a clip 10. It is formed. The base portion 87 of the main body portion 82 is assembled to the sash of the door upper side portion 31 of the rear door 3.

Further, as shown in FIG. 4, a resin insert 86 is embedded in the connection portion 81 including the mounting hole 85 in an inverted L-shape similar to the inverted L-shaped cross section of the connection portion 81. Nylon (6,6-nylon) was used for the resin insert 86. Since nylon has a high melting point, it has the advantage of not being deformed during molding. The insert 86 is not limited to nylon as long as it is a material that does not deform during molding. Further, the insert 86 may be embedded inside the first weather strip 8 or may be partially exposed on the outside of the vehicle of the first weather strip 8. The resin insert 86 may be omitted depending on the shape and thickness of the connecting portion 81, the material used, and the like.

Next, the second weather strip 9 used in the embodiment of the present invention will be described with reference to FIGS. 1 and 5 to 7. The second weather strip 9 is assembled over the entire door vertical side portion 32 in a shape that follows the shape of the door vertical side portion 32 on the front side of the rear door 3. The second weather strip 9 is formed with a lip 91 that abuts on the inside of the vehicle on the rear vertical side portion of the front door (not shown). In the second weather strip 9, it is integrated with the first weather strip 8 in the region C of FIG. The second weather strip 9 was entirely made of EPDM (ethylene propylene rubber) solid rubber.

As shown in FIG. 6 (AA cross-sectional view of the second weather strip 9 in FIG. 5B), the second weather strip 9 is below the upper tip portion and integrated with the first weather strip 8. A fixing portion 94 to be fixed to the molding end cap 34 is formed in the portion to be fixed, and a mounting hole 95 is formed in the fixing portion 94.

As shown in FIG. 7 (BB sectional view of the second weather strip 9 in FIG. 5 (b)), the upper tip portion of the second weather strip 9 is engaged with the first weather strip claw portion 84. A second engaging arm 93 that engages with one engaging arm 92 and the molding end cap claw portion 35 of the molding end cap 34 is formed.

Further, as shown in FIG. 5B, the portion of the second weather strip 9 other than being integrated with the first weather strip 8 is assembled with the second weather strip 9 on the flange of the door vertical side portion 32. A contact lip 98 is formed at the tips of the vehicle inner side wall 96 and the vehicle outer side wall 97, and the vehicle inner side wall 96 and the vehicle outer side wall 97.

Next, a case where the first weather strip 8 and the second weather strip 9 are assembled to the rear door 3 will be described with reference to FIGS. 8 to 10. First, the molding end cap 34 is attached to the front tip portion of the molding formed on the door upper side portion 31 of the rear door 3. As shown in FIG. 10, the molding end cap 34 is formed with a molding end cap claw portion 35 that engages with the second engaging arm 93 of the second weather strip 9 to fix the second engaging arm 93. There is. Further, as shown in FIG. 9, a fixing arm 36 for fixing the fixing portion 94 of the second weather strip 9 with the clip 10 is formed. The fixed arm 36 is formed with a mounting hole 37 through which the clip 10 penetrates.

The molding end cap 34 is made of resin, and in this embodiment, PP (polypropylene), which is a hard resin, is used. If it is a hard resin, another resin may be used.

Next, the mounting hole 95 formed in the fixing portion 94 of the second weather strip 9 is aligned with the position of the mounting hole 37 of the fixing arm 36 of the molding end cap 34, and the clip 10 is inserted from the second weather strip 9 side. , Fix the molding end cap 34 and the second weather strip 9.

Further, the second engaging arm 93 formed on the upper tip portion of the second weather strip 9 is engaged with the molding end cap claw portion 35 of the molding end cap 34. After that, the vehicle inner side wall 96, the vehicle outer side wall 97 and the contact lip 98 formed in other parts of the second weather strip 9 are inserted into the flange of the door vertical side portion 32, and the second weather strip 9 to the rear door 3 is inserted. Installation is completed.

Next, the base portion 87 of the main body portion 82 of the first weather strip 8 is assembled to the sash of the door upper side portion 31 of the rear door 3. Then, as shown in FIG. 10, the connecting portion 81 of the first weather strip 8 is put on the second weather strip 9 and the molding end cap 34. At this time, the first engaging arm 92 formed on the upper tip portion of the second weather strip 9 and the first weather strip claw portion 84 formed on the connecting portion 81 of the first weather strip 8 are engaged with each other.

Then, the rear door 3 is fixed by aligning the mounting hole 85 of the first weather strip 8 with the mounting hole 33 of the connecting portion mounting portion 30 of the first weather strip 8 formed so as to project from the sash, and fixing the mounting hole 33 with the clip 10. The attachment of the first weather strip 8 to the first weather strip 8 is completed. After that, the space between the rear door 3 and the peripheral edge of the vehicle body opening is sealed, and the door weather strip 5 attached to the outer peripheral edge of the door frame is attached.

In the above embodiment, the second weather strip 9 includes both the molding end cap claw portion 35 formed on the molding end cap 34 and the first weather strip claw portion 84 formed on the connecting portion 81 of the first weather strip 8. However, it may be engaged with either one. Since the second weather strip 9 is fixed to the fixing arm 36 of the molding end cap 34 with the clip 10 at the lower part, it is fixed at two places above and below by engaging at the upper tip portion, and the position is displaced. This is because it is possible to prevent.

The practice of the present invention is not limited to the above embodiment, and various modifications can be made as long as the object of the present invention is not deviated.

For example, although the first weather strip 8 in the present embodiment is formed separately from the door weather strip 5 attached to the outer periphery of the door frame or the like, it may be integrally formed.

The second weather strip 9 in the present embodiment uses EPDM (ethylene propylene rubber) solid rubber as a whole, but for example, the portion below the belt line may be EPDM sponge rubber.

For example, although the first weather strip 8 and the second weather strip 9 are formed of EPDM (ethylene propylene rubber), they may be formed of an olefin-based thermoplastic elastomer (TPO).

3 Rear door 5 Weather strip 31 Door upper side 32 Door vertical side 33 Mounting hole 34 Mall end cap 35 Mall end cap Claw 36 Fixed arm 37 Mounting hole 8 1st weather strip 81 Connection 82 Main body 83 Lip 84 1st weather Strip claw 85 Mounting hole 86 Insert 87 Base 9 Second weather strip 91 Lip 92 First engaging arm 93 Second engaging arm 94 Fixed part 95 Mounting hole 96 Car inner side wall 97 Car outer side wall 98 Abutment lip

Claims (5)

The first weather strip attached to the sash on the upper side of the door,
It is a door weather strip that is manufactured separately from the second weather strip that is attached to the flange on the vertical side of the door and is attached to the periphery of the door.
A molding end cap is attached to the end of the sash.
The second weather strip has a fixing portion fixed to the molding end cap and a fixing portion.
A portion closer to the upper end than the fixed portion has an engaging portion and has an engaging portion.
The second weather strip is clipped to the molding end cap at the fixing portion and is fixed to the molding end cap.
The engaging portion of the second weather strip engages with the molding end cap claw portion formed on the molding end cap and / and the first weather strip claw portion formed at the end portion of the first weather strip. Door weather strip characterized by being fixed. The first weather strip has a connection portion that engages the main body portion and the second weather strip, the main body portion has a lip portion and a base portion, and the connection portion is the base portion of the main body portion. The door weather strip according to claim 1, wherein the hardness is lower than that of the portion. The door weather strip according to claim 2, wherein the connection portion of the first weather strip has a resin insert. The door weather strip according to claim 2 or 3, wherein the first weather strip is clipped to the sash on the upper side of the door at the connection portion. The door weather strip according to any one of claims 1 to 4, wherein the material of the door is an aluminum alloy.

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