Source: http://www.google.com/patents/US7306839?dq=5251294
Timestamp: 2015-08-04 01:42:56
Document Index: 186445460

Matched Legal Cases: ['arts 40', 'arts 140', 'arts 38', 'arts 38', 'art 137', 'arts 38', 'art 37', 'art 37', 'arts 40', 'arts 40', 'arts 40', 'arts 38', 'arts 40']

Patent US7306839 - Molded weather strip - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe core mold in the molding device (51) for forming the molded member (4) of the weather strip (1) is provided with a center core (61) having a center core body (63), and a side core (62) having a pair of side core bodies (66L, 66R) The base bottom portion (21) of the molded member (4) is made so that...http://www.google.com/patents/US7306839?utm_source=gb-gplus-sharePatent US7306839 - Molded weather stripAdvanced Patent SearchPublication numberUS7306839 B2Publication typeGrantApplication numberUS 11/634,861Publication dateDec 11, 2007Filing dateDec 7, 2006Priority dateJun 10, 2003Fee statusPaidAlso published asCN1572461A, CN1572461B, DE602004012796D1, DE602004012796T2, EP1486368A1, EP1486368B1, US7175797, US20050008819, US20070077394Publication number11634861, 634861, US 7306839 B2, US 7306839B2, US-B2-7306839, US7306839 B2, US7306839B2InventorsYoshihisa Kubo, Masahiko ItoOriginal AssigneeToyoda Gosei Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (8), Referenced by (7), Classifications (24), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMolded weather strip
US 7306839 B2Abstract
The core mold in the molding device (51) for forming the molded member (4) of the weather strip (1) is provided with a center core (61) having a center core body (63), and a side core (62) having a pair of side core bodies (66L, 66R) The base bottom portion (21) of the molded member (4) is made so that a center slit (33) having substantially an H-shape, a pair of slide slits (32L, 32R), and slit-less bridge portion (34). In order to open the molds, the side core (62) is slid, and the center core body (63) is thereby separated from the side core bodies (66L, 66R). The center core body (63) is thereby withdrawn from the weather strip (1), and the side core bodies (66L, 66R) thereafter are withdrawn.
a molded member including a base bottom portion, and a seal portion in which a hollow portion is formed, projecting from said base bottom portion,
said base bottom portion being provided with at least three slits including a center slit, and two side slits formed on both sides of said center slit, so that bridge portions are formed between adjacent ones of said slits, and
said center slit being provided with a first slit part, and second slit parts are formed substantially at both ends of the first slit part so that said second slit parts intersect with the first slit part, wherein said second slit parts intersect with said first slit part substantially at right angles, and said center slit as a whole is formed substantially in an H-shape or substantially in a U-shape.
2. A weather strip according to claim 1, wherein said molded member has a curved shape so that said molded member is fitted in an opening portion of a vehicle or a corner portion of a circumference of a door.
3. A weather strip according to claim 1, wherein said molded member is formed substantially linearly.
4. A weather strip according to claim 1, wherein the molded member has a two ends, and each of the ends of the molded member is connected to a separately formed extruded member.
5. A weather strip according to claim 1, wherein said molded member is connected to the end portion of separately formed extruded member to form a terminal portion of the weather strip.
The present application is a division of U.S. application Ser. No. 10/862,886 filed on Jun. 8, 2004 now U.S. Pat. No. 7,175,797, which is based on Japanese Patent Applications Nos. 2003-164598 and 2003-433457, which are incorporated herein by reference.
FIG. 3 is a sectional view taken along the line III-III in FIG. 2 and showing an extruded member;
FIG. 5 is a sectional view taken along the line V-V in FIG. 4 and showing the molded member;
FIG. 6 is a drawing for describing the molded member viewed from the side of a fixing surface of the weather strip of the first-embodiment;
FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7 and describing the molding device and a center core;
FIG. 9 is a sectional view taken along the line IX-IX in FIG. 7 and describing the molding device and an orthogonal transverse piece portion of the center core;
FIG. 11A is a sectional view taken along the line XIA-XIA in FIG. 10 and showing an extruded member, and FIG. 11B is a sectional view taken along the line XIB-XIB and showing a molded member;
A first embodiment will now be described with reference to the drawings. As shown in FIG. 2, a door weather strip (which will hereinafter be referred to simply as “weather strip”) 1 formed out of EPDM (ethylene-propylene-diene copolymer rubber), or TPO (olefin-based plastic elastomer) and the like is fixed to, for example, an automobile door so that the weather strip extends along an outer circumference of the door.
The EPDM rubber or the like in a plasticized state is then injected with the molds in this condition from a gate (not shown) into the cavity 70 to fill the same therewith. The EPDM rubber is thereafter vulcanized and solidified. After the solidifying operation is completed, the molds are opened in order. First, the lower mold 52, upper mold 53, outside upper inner-mold 54 and outside lower inner-mold 55 are separated from the molded weather strip 1. Next, the side core 62 is slid (upward in the drawing) with the weather strip 1 with respect to the inside upper inner-mold 56 and inside lower inner-mold 57 as shown in FIG. 1. As a result, the weather strip 1 is separated from the inside upper inner-mold 5 and inside lower inner-mold 57, and the center core body 63 in the hollow portion is removed automatically and easily from the center slit 33. During this time, the projections 69 of the inside lower inner-mold 57 are also separated from the weather strip 1, so that clearances due to the extension slit parts 40L, 40R, 41L, 41R are formed in the weather strip 1.
In order to open the molds, the side core 162 is slid with the weather strip 101, and the center core body 163 in the hollow portion is removed from the center slit 133 automatically with ease. During this time, the projections 169 a and pin 169 b are also separated from the weather strip 101, so-that clearances due to the extension slit parts 140L, 140R, 141L, 141R, and the clip hole 135 come to be formed in the weather strip 101.
(a) In the above-described first and second modes of embodiments, the center slits 33, 133 and side slits 32L, 32R, 132L, 132R are provided on substantially the same line but these slits may not necessarily be arranged on the same line. (b) In the above-described first and second modes of embodiments, the length of the short slit parts 38, 138 are set substantially equal to the width of the surface on the side of the hollow portion 22, 122 in the base bottom portion 21, 121. The purpose is met as long as the center core body 63, 163 can be withdrawn from the center slit 33, 133, and the mentioned length is not limited to the mentioned level. For example, this length may be not smaller than � of the width of the mentioned surface, and also not smaller than ⅔ or not smaller than � thereof. (c) It is not necessary that the short slit parts 38, 138 be formed so as to cross the long slit part 137 at right angles thereto. For example, the short slit parts may be formed so as to diverge toward the side slits. (d) The short slit parts 38, 138 are provided at substantially both end portions in the longitudinal direction of the long slit part 37, 137. The purpose is met as long as the center core body 63, 163 is withdrawn from the center slit 33, 133. The positions in which the short slit parts are provided are not limited to the mentioned positions. For example, one short slit part may be provided in a position in the vicinity of the long slit part 37, 137 so that the center slit as a whole substantially has a shape of a cross or a shape of the letter “T”. (e) The weather strip 1, 101 has a flexibility as mentioned above. Therefore, when the side core bodies 66L, 66R, 166L, 166R can be withdrawn from the weather strip 1, 101, the length of the extension slit parts 40L, 40R, 41L, 41R, 140L, 140R, 141L, 141R may be smaller than that of fitting portions of the side core bodies 66L, 66R, 166L. (f) All of the extension slit parts 40L, 40R, 41L, 41R, 140L, 140R, 141L, 141R may not have the same sizes. (g) The extension slit parts 40L, 40R, 41L, 41R, 140L, 140R, 141L, 141R are provided at both ends of the two side slits 32L, 32R, 132L, 132R, i.e., in four positions. These extension slit parts may not necessarily be provided in four positions. For example, these slit parts may be provided even in two positions on the side of the center slit 33, 133. (h) The slit end portions 42, 142 may not be formed substantially circularly but maybe formed so as to extend in the widthwise direction of the weather strip 1, 101 in the same manner as the short slit parts 38, 138. This enables the side core bodies 66L, 66R, 166L, 166R to be withdrawn more easily from the weather strip 1, 101. (i) In the above-described first and second modes of embodiments, the molding device 51 is formed so that, when the molds are opened, the side core 62, 162 is slid with the weather strip 1, 101 with respect to the inside upper inner-mold 56 and inside lower inner-mold 157. However, conversely, the mold may be formed so that the center core 61, 161, inside upper inner-mold 56 and inside lower inner-mold 57, 157 are slid with respect to the weather strip 1, 101 and side core 62, 162. (j) A clip fixing hole may be provided in the bridge portion 34, 134L, 134R, and, when occasion demands, an insert may be provided (buried). (k) The side core 62, 162 may be divided into left and right portions without being connected together by the connecting portion 68, 168. (l) The weather strips 1, 101 in the above-described first and second modes of embodiments are not provided with an insert but, even when the insert is provided, any inconveniences may occur, of course. (m) The order of removing the weather strip 1, 101 is not at all limited to those in the above-described embodiments. Namely, the weather strip can be removed in other order since the weather strip has a predetermined level of elasticity and owing to the existence of the extension slit parts 40L, 40R, 41L, 41R, 140L, 140R, 141L, 141R. (n) The molded member can be applied to various kinds of shapes, such as a curved shape of a corner portion of a weather strip, and a substantially linear shape of the weather strip irrespective of the connecting condition of the molded member to (one end or both ends of) the extruded member. Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4769947Feb 20, 1987Sep 13, 1988Toyoda Gosei Co., Ltd.Weather strip for automobileUS5258157Apr 11, 1991Nov 2, 1993Toyoda Gosei Co., Ltd.Method for joining extruded weather strips and resulting weather strip for motor vehicleUS5269101Mar 3, 1993Dec 14, 1993Toyoda Gosei Co., Ltd.Automotive weatherstripUS6395355Oct 29, 1998May 28, 2002Toyoda Gosei Co., Ltd.Weather stripUS6598347Apr 27, 2001Jul 29, 2003Toyoda Gosei Co., Ltd.Weather stripGB2329143A Title not availableJPH04131209A Title not availableJPS58205749A Title not availableReferenced byCiting PatentFiling datePublication dateApplicantTitleUS8765041Jul 11, 2013Jul 1, 2014Toyoda Gosei Co., Ltd.Weather strip and production method thereofUS8782955 *Nov 17, 2011Jul 22, 2014Nishikawa Rubber Co., Ltd.Sealing structure of weather strip for retractable roof vehiclesUS8839564 *Jul 28, 2011Sep 23, 2014Press-Seal Gasket CorporationTrailer door sealUS9032668Aug 28, 2013May 19, 2015Press-Seal Gasket CorporationSeal with primary and secondary sealing lobes for use in roll-up door applicationsUS20120023829 *Feb 2, 2012Press-Seal Gasket CorporationTrailer door sealUS20120159861 *Nov 17, 2011Jun 28, 2012Nishikawa Rubber Co., Ltd.Sealing structure of weather strip for retractable roof vehiclesUS20120240473 *Mar 23, 2011Sep 27, 2012Toyoda Gosei Co., Ltd.Weather strip and production method thereof* Cited by examinerClassifications U.S. Classification428/122, 49/498.1, 428/136, 49/479.1International ClassificationB60J10/00, B60J10/08, B29C45/14, B29C45/33, B29L31/26, B29K105/20, B29L31/30, B29C45/36, B29D99/00Cooperative ClassificationY10T428/24314, B29C45/14409, B60J10/08, B29L2031/26, Y10T428/24198, B60J10/0017, Y10T428/139, B29C45/14467European ClassificationB29C45/14F5, B60J10/08, B60J10/00D1Legal EventsDateCodeEventDescriptionMay 11, 2011FPAYFee paymentYear of fee payment: 4May 27, 2015FPAYFee paymentYear of fee payment: 8RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services