JP2006150993A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a glass run from popping out from a glass run attachment part of a door sash. <P>SOLUTION: The glass run 1 in which a plurality of core materials 12 for preventing expansion/contraction in a longitudinal direction are buried is mounted to the glass run attachment part 202 of the door sash 201 of the vehicle and is used. The plurality of core materials 12 are arranged on a bending neutral axis CL1 of the door sash 201. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a weather strip for automobiles in which a core material such as a metal wire or a synthetic resin cord is embedded in order to prevent elongation during vehicle assembly and contraction after assembly.

  For example, a door glass run 1 as shown in FIGS. 8 and 9 is known as an automobile weather strip in which a core material such as a metal wire or a synthetic resin cord is embedded. The door glass run 1 has a glass run body formed in a substantially U-shaped cross section by an outer side wall portion 2 and an inner side side wall portion 3 facing each other and a bottom wall portion 4 connecting the pair of side wall portions 2 and 3. Part 5, first and second glass seal parts 6, 7 provided at the front ends of the pair of side wall parts 2, 3 toward the inner surface side, and the outer surface side at the front ends of the pair of side wall parts 2, 3 The first and second panel seal portions 8 and 9 provided toward the bottom surface, and the first and second panel seal portions 8 and 9 provided on the side surfaces of the pair of side wall portions 2 and 3 on the bottom wall portion 4 side toward the outer surface side. The retaining lip portions 10 and 11 are provided. A plurality of core members 12 such as metal wires and synthetic resin cords are embedded in the bottom wall portion 4.

  The door glass run 1 is attached in a state of being fitted to a glass run mounting portion 202 having a substantially U-shaped cross section of the door sash 201, and the first and second retaining lip portions 10 and 11 are the inner surfaces of the glass run mounting portion 202. The lip engaging portions 203 and 204 provided on the glass run are prevented from falling off the glass run mounting portion 202, and the first and second panel seal portions 8 and 9 The opening edge portions 202a and 202b of the mounting portion 202 are sealed, and the inner surfaces of the door glass 205 are sealed by the first and second glass seal portions 6 and 7. In FIG. 9, CL1 is a vehicle (door sash) reference bending neutral axis (bending neutral axis in the vehicle Z-axis direction), and CL2 is a cross-sectional reference neutral axis of the door glass run 1.

Further, as a weather strip for a door sash (hereinafter referred to as a door weather strip), the one shown in FIG. 10 is known. The door weather strip 101 includes a bottom wall portion 102 as a mounting base to the door sash 201, a hollow seal portion 103 formed integrally with the bottom wall portion 102, and a protrusion formed on the vehicle exterior side of the hollow seal portion 103. A first lip 104 and a second lip 105 formed between the first lip 104 and the bottom wall 102. A plurality of core members 106 such as metal wires and synthetic resin cords are embedded in the bottom wall portion 102. In the door weather strip 101, the bottom wall portion 102 is attached to a door weather strip attachment portion 210 of the door sash 201 by a resin clip (not shown). In FIG. 10, CL <b> 1 is a vehicle (door sash) reference bending neutral axis (bending neutral axis in the vehicle Z-axis direction), and CL <b> 2 is a sectional reference neutral axis of the door weather strip 101. (For example, refer to Patent Document 1).
JP 2000-264072 A

By the way, when the conventional door glass run 1 and the door weather strip 101 are used in a state of being inclined on the cross section as in the roof portion and being curved in the Z-axis direction of the vehicle, as shown in FIG. There were the following problems.
(1) In the door glass run 1, as shown in FIG. 11, the neutral axis CL <b> 2 based on the cross section determined by the plurality of core members 12 is a vehicle-based bending neutral axis (bending neutral axis in the vehicle Z-axis direction). Since the second moment M of the cross-section that attempts to coincide with CL1 acts, the door glass run 1 rolls, and the outer side wall 2 protrudes from the glass run mounting portion 202 of the door sash 201, and the glass run mounting portion 202 opens. A gap G1 is generated between the edge portion 202a and the first panel seal portion 8. Further, the side wall 3 on the inner side sinks into the glass run mounting portion 202 having a substantially U-shaped cross section of the door sash 201, and the second panel seal portion 9 is pressed against the opening edge 202 b of the glass run mounting portion 202. Will be crushed.
(2) In the conventional door weather strip 101, as shown in FIG. 12, the cross-sectional neutral axis CL2 determined by the plurality of core members 106 is a vehicle-based bending neutral axis (in the vehicle Z-axis direction). Bending neutral axis) A second moment M of cross-section that attempts to coincide with CL1 acts, so that the bottom wall portion 102 is lifted from the weather strip mounting surface 210 of the door sash 201, and the bottom wall portion 102 and the weather strip mounting surface 210. A gap G2 is generated between them, and the sealing performance of the door weather strip 101 is impaired. In order to prevent the sealing performance of the door weather strip 101 from being impaired, it is necessary to add a double-sided tape or increase the number of resin clips.

  An object of the present invention is to provide a door glass run that can solve the above-mentioned conventional problems and can prevent the glass run mounting portion of the door sash from popping out.

  Another object of the present invention is to provide a door weather strip that can prevent lifting from the door sash.

  According to a first aspect of the present invention, there is provided an automotive weather strip in which a plurality of core members for preventing expansion and contraction in a length direction are embedded, and the plurality of core weather strips are used by being attached to a vehicle door sash. The core material was placed on the bending neutral axis of the door sash.

  According to a second aspect of the present invention, in the automotive weather strip according to the first aspect, the position of the center of gravity of the automotive weather strip is arranged on the bending neutral axis of the door sash.

  According to a third aspect of the present invention, in the automobile weather strip according to the second aspect, the core material is disposed at a symmetrical position with the center of gravity of the automobile weather strip as the center.

  According to a fourth aspect of the present invention, in the automotive weather strip according to the second or third aspect, the center of gravity of the automotive weather strip is positioned on the door sash by providing a thick portion in a part of the weather strip. Located on the bending neutral axis.

  According to a fifth aspect of the present invention, in the automotive weather strip according to the second or third aspect, the gravity center position of the automotive weather strip is set on the door sash by providing a high specific gravity portion in a part of the weather strip. Located on the bending neutral axis.

  The weather strip for an automobile according to claim 1 has a state in which the bending neutral axis of the door sash and the neutral axis of the cross section of the weather strip coincide with each other to prevent the weather strip from rolling, It is possible to prevent the door sash from being lifted from the weather strip mounting portion.

  In the weather strip for automobiles according to the second aspect, since the center of gravity of the weather strip is disposed on the bending neutral axis of the door sash, the weather strip can be assembled to the door sash in a more stable state.

  In the automobile weather strip according to the third aspect of the present invention, since the core material is disposed at the symmetrical position with the center of gravity of the weather strip as the center, the weather strip assembled to the door sash can be further stabilized.

  In the weather strip for automobiles according to the fourth aspect, the center of gravity position of the weather strip can be adjusted by the thick portion, and the center of gravity position can be easily matched with the bending neutral axis of the door sash. Thereby, the position of the center of gravity can be moved without deteriorating the sealing performance, the door opening / closing performance, and the like.

  The automobile weather strip according to the fifth aspect of the present invention can adjust the position of the center of gravity without increasing the thickness of the weather strip by the high specific gravity portion so that the position of the center of gravity coincides with the bending neutral axis of the door sash. Thereby, the position of the center of gravity can be moved without deteriorating the sealing performance, the door opening / closing performance and the like and without changing the cross-sectional shape.

  Next, the present invention will be described by dividing the case where the automobile weather strip is a door glass run as a first embodiment, and the case where the automobile weather strip is a door weather strip as a second embodiment. Note that the same parts as those in the conventional example are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 shows a first example of the first embodiment. A door glass run 1 as a weather strip for an automobile has a substantially U-shaped cross section by an outer side wall portion 2 and an inner side wall portion 3 facing each other and a bottom wall portion 4 connecting the pair of side wall portions 2 and 3. The formed glass run body 5, first and second glass seal portions 6, 7 provided at the front ends of the pair of side wall portions 2, 3 toward the inner surface side, and the pair of side wall portions 2, 3 First and second panel seal portions 8 and 9 provided at the front end of the pair of side wall portions 2 and 3, and a first surface portion provided toward the outer surface of the pair of side wall portions 2 and 3. , Second retaining lip portions 10 and 11, and a plurality of core members 12.

  The plurality of core members 12 are on the bending neutral axis CL1 of the door sash 201 (position overlapping the bending neutral axis CL1), specifically, the distal end portion of the outer side wall portion 2 and the proximal end of the inner side wall portion 3 Is embedded in the portion (the end on the bottom wall portion 4 side), and the neutral axis CL2 of the door glass run 1 on the basis of the cross section overlaps the bending neutral axis CL1 of the door sash 201. CL3 is the center of gravity position of the door glass run 1.

  The door glass run 1 is formed by extrusion molding from solid rubber, thermoplastic elastomer or the like. The core 12 is made of a metal wire, a synthetic resin cord, or the like, and the door glass run 1 is embedded at the time of extrusion molding.

  The door glass run 1 of the first embodiment is configured as described above, and the plurality of core members 12 are arranged on the bending neutral axis CL1 of the door sash 201 (position overlapping the bending neutral axis CL1). The bending neutral axis CL1 of the sash 201 and the neutral axis CL2 of the sectional basis of the door glass run 1 coincide with each other, the roll of the door glass run 1 is prevented, and the door glass run 1 jumps out of the glass run mounting portion 202 of the door sash 201. Can be prevented.

  FIG. 2 shows a second embodiment of the door glass run 1. In this embodiment, the bending neutral axis CL1 of the door sash 201 and the neutral axis CL2 based on the cross section of the door glass run 1 are made to coincide with each other, and the center of gravity CL3 of the door glass run 1 is set to the bending neutral axis CL1 and It was made to correspond to the neutral axis CL2 of the cross-sectional standard. Here, in this embodiment, the center of gravity CL3 of the door glass run 1 is set by making the entire second glass seal portion 7 thin and making the entire bottom wall portion 4 thick compared to the first embodiment. , The bending neutral axis CL1 of the door sash 201 and the bending neutral axis CL2 of the door glass run 1 are made coincident with each other. In FIG. 2, what is indicated by a one-dot chain line is the shape of the first embodiment.

  Further, the core material 12 is arranged at a symmetrical position with the center of gravity CL3 of the door glass run 1 as the center. Since the center of gravity CL3 of the door glass run 1 is made coincident with the bending neutral axis CL1 of the door sash 201 and the neutral axis CL2 of the cross-sectional basis of the door glass run 1, the assembly of the door glass run 1 to the door sash 201 is further improved. Can do. In addition, since the core material 12 is arranged at a symmetrical position with the center of gravity CL3 of the door glass run 1 as the center, the action and effect of the core material 12 can be balanced. Other configurations are the same as those in the first embodiment, and thus a duplicate description is omitted.

  FIG. 3 shows a third embodiment of the door glass run 1. In this embodiment, the thick portion 21 is provided in a part of the door glass run 1 so that the center of gravity CL3 of the door glass run 1 is set to the bending neutral axis CL1 of the door sash 201 and the neutral axis CL2 of the door glass run 1 with respect to the cross section. Matched. In this embodiment, the length L1 of the inner side wall 3 is longer than that of the first embodiment shown in FIG. Here, if the wall thickness of the inner side wall 3 is the same as that of the first embodiment, the gravity center position CL3 of the door glass run 1 moves downward from the gravity center position CL3 of the first embodiment, and the door sash 201 The bending neutral axis CL1 and the bending neutral axis CL2 of the door glass run 1 are separated. (This is shown as an imaginary center of gravity position CL4). Here, as in the second embodiment, if the position of the center of gravity is moved by changing the thickness of the second glass seal portion 7 and the bottom wall portion 4, the thickness needs to be significantly changed, and the sealing performance, glass It will adversely affect the lifting performance. Therefore, the door glass run 1 of the third embodiment is provided with a thick portion at a part of the door glass run 1 so that the center of gravity position CL3 of the door glass run 1 is set to the bending neutral axis CL1 of the door sash 201 and the door glass run 1. It was made to coincide with the bending neutral axis CL2. Further, by providing a thick portion on the base side of the both side wall portions (above substantially the center portion), it is possible to avoid interference with the first and second glass seal portions 6 and 7, and to improve the glass lifting performance. Can be avoided more reliably. Since other configurations, operations, and effects are the same as those in the second embodiment, a duplicate description is omitted.

  FIG. 4 shows a fourth embodiment of the door glass run 1. In this embodiment, by providing the high specific gravity portion 31 in a part of the door glass run 1, specifically, the whole or a part of the bottom wall portion 4 is formed of a high specific gravity solid rubber, and the other portions are low. It was made of solid foamed rubber with specific gravity. In addition, the part which provides the high specific gravity part 31 is not limited to the bottom wall part 4, The outer side side wall part 2 and the inner side side wall part 3 may be sufficient. Other configurations, operations, and effects are the same as those in the first embodiment, and thus redundant description is omitted.

  FIG. 5 shows a second embodiment, that is, a first example where the automobile weather strip is the door weather strip 101. A door weather strip 101 as an automobile weather strip includes a bottom wall portion 102 as an attachment base to the door sash 201, a hollow seal portion 103 formed integrally with the bottom wall portion 102, and the hollow seal portion 103. A first lip 104 protruding from the vehicle exterior side, a second lip 105 formed between the first lip 104 and the bottom wall portion 102, and a plurality of core members 106 are provided.

  The plurality of core members 106 are embedded on the bending neutral axis CL1 of the door sash 201 (a position overlapping the bending neutral axis CL1), specifically, the hollow seal portion 103 and the base portion of the second lip 105. The neutral axis CL2 based on the cross section of the door weather strip 101 is overlapped with the bending neutral axis CL1 of the door sash 201. In addition, CL3 is the gravity center position of the door weather strip 101, and the said core material 106 is arrange | positioned in the left-right symmetrical position centering on this gravity center position CL3.

  The door weather strip 101 is formed by extrusion molding with sponge rubber, foamed thermal plastic elastomer or the like. The core member 106 is made of a metal wire, a synthetic resin cord, or the like, and the door weather strip 101 is embedded at the time of extrusion molding.

  The first embodiment of the door weather strip 101 is configured as described above, and the plurality of core members 106 are arranged on the bending neutral axis CL1 of the door sash 201 (position overlapping the bending neutral axis CL1). The bending neutral axis CL1 201 and the neutral reference axis CL2 of the cross section of the door weather strip 101 coincide with each other. Accordingly, as in the case where the vehicle-based bending neutral axis (bending neutral axis in the vehicle Z-axis direction) CL1 does not coincide, the secondary moment M acts on the cross section and the door weather strip 101 rotates to rotate the bottom wall portion 102. Is not lifted from the weather strip mounting surface 210 of the door sash 201, and the sealing performance of the door weather strip 101 is prevented from being impaired.

  FIG. 6 shows a second example of the second embodiment. In this embodiment, the center of gravity of the door weather strip 101 is provided by providing the thick portion 41 on a part of the door weather strip 101, specifically, by providing the thick portion 41 on a part of the bottom wall portion 102. CL3 is shifted downward from the position of the center of gravity of the door weather strip 101 of the first embodiment so as to come to the position of the bending neutral axis CL1 of the door sash 201 and the neutral axis CL2 of the cross section of the door weather strip 101. Therefore, the assembling property of the door weather strip 101 to the door sash 201 can be further improved. Moreover, since the thick part 41 is provided in a part of the bottom wall part 102, there is no influence on the door closing performance due to an increase in the reaction force of the door weather strip 101. Other configurations, operations, and effects are the same as those in the embodiment shown in FIG.

  FIG. 7 shows a third example of the second embodiment. In this embodiment, by providing the high specific gravity portion 51 in a part of the door weather strip 101, specifically, by providing the high specific gravity portion 51 on the bottom surface of the bottom wall portion 102, the gravity center position CL3 of the door weather strip 101 is provided. Is shifted downward from the position of the center of gravity of the door weather strip 101 of the fifth embodiment, and is brought close to the weather strip mounting surface 210 to suppress the rotation of the door weather strip 101 and the high specific gravity portion 51. Thus, an appropriate surface pressure to the weather strip mounting surface 210 can be secured. The high specific gravity portion 51 is formed of a fine foamed sponge rubber or solid rubber. Other configurations, operations, and effects are the same as in the case of the above-described embodiment, and thus redundant description is omitted.

Sectional drawing which shows 1st Example of a door glass run. Sectional drawing which shows 2nd Example of a door glass run. Sectional drawing which shows 3rd Example of a door glass run. Sectional drawing which shows 4th Example of a door glass run. Sectional drawing of 1st Example of a door weather strip. Sectional drawing of 2nd Example of a door weather strip. Sectional drawing of 3rd Example of a door weather strip. The side view of the door of the motor vehicle which used the conventional door glass run. AA sectional drawing of FIG. Sectional drawing of another prior art example. Sectional drawing which shows the trouble of a prior art example. Sectional drawing which shows the trouble of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Door glass run, 2 ... Outer side wall part, 3 ... Inner side side wall part, 4 ... Bottom wall part, 5 ... Glass run body part, 6, 7 ... 1st, 2nd glass seal part, 8, 9 ... 1st, 2nd panel seal part, 10, 11 ... 1st, 2nd retaining lip part, 12,
DESCRIPTION OF SYMBOLS 106 ... Core material, 101 ... Door weather strip, 102 ... Bottom wall part, 103 ... Hollow lip part, 104, 105 ... 1st, 2nd lip, 201 ... Door sash, 202 ... Glass run fitting part, 210 ... Weather strip Mounting part.

Claims (5)

In a weather strip for automobiles, in which a plurality of core members for preventing expansion and contraction in the length direction are embedded and used in a vehicle door sash, the plurality of core members are arranged on a bending neutral axis of the door sash. A weather strip for automobiles, characterized by being arranged in The weather strip for an automobile according to claim 1, wherein the center of gravity is disposed on a bending neutral axis of the door sash. The automobile weather strip according to claim 2, wherein a core member is disposed at a symmetrical position with the center of gravity as a center. The automobile according to claim 2 or 3, wherein a center of gravity of the weather strip for an automobile is positioned on a bending neutral axis of the door sash by providing a thick portion at a part of the weather strip. Weather strip. 4. The automobile according to claim 2, wherein a center of gravity of the weather strip for an automobile is positioned on a bending neutral axis of the door sash by providing a high specific gravity portion in a part of the weather strip. Weather strip.

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