JP5169687B2 - Method for manufacturing door weather strip of frameless door - Google Patents

Description

The present invention relates to a method of manufacturing the door weather strip provided in the frame-less door to be employed in the hardtop vehicle or the like.

  A door weather strip is attached to a peripheral portion of a door provided in the automobile. The door weather strip includes an attachment base portion attached by a clip along the outer periphery of the door, and a seal portion having a hollow portion. When the door is closed, the seal portion of the door weather strip is brought into pressure contact with the peripheral edge portion of the door opening formed in the automobile body, so that the door and the automobile body are sealed.

In addition, regarding a frameless door employed in a hard top vehicle or an open top vehicle, a door weather strip is attached along the front edge portion, the lower edge portion, and the rear edge portion of the door. Further, as shown in FIG. 4, the rear end of the terminal portion of the door weather strip 3 arranged corresponding to the belt line covers the inner surface of the door (door inner panel). A mold forming part 13 is provided. The rear mold part 13 is provided with a glass seal 32 having a substantially U-shaped cross section that guides the raising and lowering of the door glass and seals the rear vertical edge of the door glass in the belt line. Further, in order to improve the slidability of the door glass, there are techniques such as applying a lubricant to the inner surface of the glass seal 32, or configuring the glass seal 32 with a material mixed with the lubricant. (For example, refer to Patent Document 1).
JP-A-5-238329

  By the way, since the glass seal 32 is a part which is in sliding contact with the door glass, the glass seal 32 may be broken due to repeated raising and lowering of the door glass. In particular, when the glass seal 32 is made of a relatively hard (less elastic) material or the glass seal 32 is made thin in order to improve the slidability of the door glass, such inconvenience is more remarkable. It will be a thing.

The present invention has been made in view of the above circumstances, an object thereof is to provide a manufacturing method of the door weather strip frameless doors that can suppress damage to the glass seal.

  Hereinafter, each means suitable for solving the above-described problems will be described in terms of items. In addition, the effect etc. peculiar to a corresponding means are added as needed.

Means 1. A mounting base that is attached along the outer periphery of the frameless door, and a seal that is integrally formed with the mounting base and is pressed against the peripheral edge of the door opening formed in the vehicle body when the door is closed. As well as
Provided with molded parts at both end portions arranged corresponding to the belt line,
At least one of the molded parts includes a glass seal having a substantially U-shaped cross section that seals the vertical edge of the door glass,
The inner surface of the glass seal that is in sliding contact with the raising and lowering door glass is a method of manufacturing a door weather strip for a frameless door to which a sheet-like sliding member is attached,
A part of the sliding member extends upward from the upper edge of the glass seal after molding the part of the mold for molding the mold molding part with respect to the part for molding the glass seal. A process of attaching to,
The mold cavity is filled with a material for forming the mold forming part, and a surplus part extending upward from the upper edge of the glass seal is formed integrally with the glass seal, and the material for forming the mold is formed. And joining the sliding member;
Opening the mold and taking out the molded part;
Cutting the boundary between the glass seal and the surplus part, and removing the part attached to the surplus part of the surplus part and the sliding member from the glass seal ,
In the step of joining the forming material and the sliding member, at the boundary between the glass seal and the surplus portion, the inner surface of the glass seal to which the sliding member is attached, and the surplus portion A method of manufacturing a door weather strip for a frameless door, wherein the inner surface of the portion is flush with the inner surface .

According to the means 1, with respect to the obtained door weather strip , the sliding member is attached to the inner surface of the glass seal, thereby improving the sliding property of the door glass and increasing the rigidity of the glass seal. It is possible to suppress a situation in which the glass seal is damaged due to repeated raising and lowering of the door glass.

  In particular, according to this means, it is possible to obtain a molded part in which the upper edge part of the glass seal and the upper edge part of the sliding member are exactly aligned. Therefore, while avoiding the situation that the sliding member protrudes upward from the upper edge portion of the glass seal and causes deterioration of the appearance quality, the rigidity of the upper edge portion of the glass seal is increased, and the glass seal is raised and lowered by the door glass. It is possible to prevent a situation in which the upper edge portion of the paper is torn. Moreover, in this means, since the sliding member is attached to the upper edge part of the glass seal, the effect of improving the sliding property of the door glass is more reliably exhibited.

  Further, the surplus portion can be formed by appropriately adjusting the pressure at the time of injecting the constituent material of the glass seal into the cavity of the mold and the clamping force. In this case, a conventional mold apparatus can be used as it is.

Further, the door weather strip can be obtained with certainty. Moreover, the glass seal and the sliding member can be firmly fixed, and the situation where the sliding tape is displaced or peeled off with respect to the glass seal due to repeated raising and lowering of the door glass is prevented. be able to.

Also, for example, if a step is formed at the boundary between the glass seal and the surplus portion on the inner surface where the sliding member is attached, the sliding member floats at the boundary, or the step There is a risk of being attached by copying. In this case, there is a concern that the upper end edge of the glass seal and the end edge of the sliding member may not be neatly aligned even if cut along the boundary. On the other hand, according to the present means 1, since the inner side surface of the glass seal and the inner side surface of the surplus portion are flush with each other at the boundary between the glass seal and the surplus portion, the above problem can be eliminated. It is possible to achieve the above effects more reliably.

Mean 2. The meat remainder portion is formed to be thinner than the glass seal, frameless according to claim 1, characterized in that so as to form a step along the boundary between the glass seal and the wall remainder portion Manufacturing method of door weather strip.

  According to the means 2, the step mark is formed along the boundary portion between the glass seal and the surplus portion, so that a mark for excision is formed. Therefore, it is possible to surely cut a portion to be cut (remaining portion) and to suppress a situation where a portion that should not be cut (glass seal body) is cut. In addition, if the cut is made along the step, it is possible to suppress the situation that the upper edge of the glass seal after the excess portion is cut is distorted (becomes a wavy shape), and the quality is improved. Can be achieved.

  Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a schematic front view showing a schematic configuration of the door 1. FIG. 2 is a sectional view taken along line JJ of FIG. FIG. 3 is a perspective view showing the rear mold part 13 as viewed from the vehicle outer side (mounting surface side). FIG. 4 is a perspective view showing the rear mold part 13 as seen from the vehicle inner side (exposed surface side). 5 is a cross-sectional view of the glass seal 32 taken along line LL in FIG. 6 and 7 are cross-sectional views showing the manufacturing process of the glass seal 32. In FIG. 5, for the sake of convenience, the illustration of the glass weather strip 9 and the like is omitted.

  An automobile as a vehicle is provided with a front door that opens and closes a door opening formed in the automobile body as a vehicle body. As shown in FIG. 1, the front door (hereinafter simply referred to as “door 1”) includes a door glass DG that moves up and down to open and close the window W, and a door weather strip 3 that is attached along the outer periphery of the door 1. And. The door 1 in the present embodiment is a so-called frameless type door in which a door frame surrounding the window portion W is not provided above the belt line. The door 1 is configured such that the front portion is pivotally supported with respect to the automobile body and the rear side is opened.

  Further, the door weather strip 3 includes an extrusion molding portion 11 attached along the front edge portion, the lower edge portion, and the rear edge portion of the door 1, and a front mold integrally formed at a terminal on the front side of the extrusion molding portion 11. A molding part 12 and a rear mold part 13 formed integrally with a terminal on the rear side of the extrusion molding part 11 are provided. In this embodiment, the door weather strip 3 is made of EPDM (ethylene-propylene-diene copolymer rubber).

  As shown in FIG. 2, the extrusion molding part 11 includes a mounting base 15 attached to a retainer part 5 provided along the outer periphery of the door 1, and a sealing part integrally formed with the mounting base 15 and having a hollow part. 16. When the door 1 is closed, the seal portion 16 is deformed by being pressed against the peripheral edge portion of the door opening of the automobile body, whereby the space between the automobile body and the door 1 is sealed. A clip 19 is attached to the attachment base 15 of the extrusion molding part 11 at predetermined intervals along the longitudinal direction of the extrusion molding part 11, and the clip 19 is attached to the attachment hole 20 formed in the retainer part 5. The door weather strip 3 is attached to the door 1 by fitting.

  Further, as shown in FIG. 1, the door 1 is provided with a glass weather strip 9 along the belt line. The glass weather strip 9 is composed of a glass outer weather strip attached to the upper edge portion of the door outer panel and a glass inner weather strip attached to the upper edge portion of the door inner panel (not shown). Although not shown, each of the glass outer weather strip and the inner weather strip includes a base portion having a substantially U-shaped cross section attached to the upper edge portion of the panel, and a seal lip protruding from the base portion. When the window W is closed, the outer and inner surfaces of the door glass DG are sealed at the belt line by the seal lip.

  As shown in FIGS. 3 and 4, the rear mold portion 13 is attached to the inner surface of the door inner panel and covers the inner surface of the door inner panel and the door glass DG. A cross section (cross section when cut in the transverse direction) that seals the rear edge of the door glass DG in the belt line, and a rear side of the glass inner weather strip And a terminal accommodating portion 33 for accommodating the terminal, and these are integrally formed by molding.

  The main body 31 has a cross-sectional shape that matches the inner surface of the door inner panel, is located on the outer side of the door glass DG, and is in contact with the upper corner of the rear of the door inner panel. 34, the second plate-like portion 35 extending from the front edge of the first plate-like portion 34 to the vehicle inner side, the vehicle interior side of the second plate-like portion 35, located on the vehicle inner side than the door glass DG. And a third plate-like portion 36 extending forward from the end edge. The main body 31 (first to third plate-like parts 34, 35, 36) is made of a resin material (for example, polypropylene) harder than the rear mold part 13 (EPDM), and is insert-molded at the time of mold molding. An embedded member (not shown) is provided. In addition, an insertion hole 37 penetrating in the vehicle width direction is formed in the first plate-like portion 34 and the third plate-like portion 36, and the insertion hole 37 and an attachment hole formed in the door inner panel are positioned. The rear mold part 13 is fixed to the door 1 by attaching a clip (not shown) together. In addition, the second plate-like portion 35 extends while being partially curved upward and forward in accordance with the shape of the door inner panel, but in the upper front portion of the second plate-like portion 35, In order to avoid interference with the door glass DG, a recessed portion 39 having a substantially L-shaped cross section protruding rearward is formed.

  As shown in FIG. 4, FIG. 5, etc., the glass seal 32 extends upward from the upper rear end edge of the recessed portion 39 of the second plate-shaped portion 35, and faces the rear end edge of the door glass DG, A base portion 41 that is in sliding contact with the outer peripheral surface of the door glass DG, and a vehicle inner surface of the door glass DG that extends forward from the vehicle inner edge of the base portion 41 (along the upper vehicle inner edge of the recess 39). A vehicle interior seal portion 42 (see FIG. 4) that is in sliding contact with the vehicle, and a vehicle exterior seal portion 43 that extends forward from the vehicle outer edge of the base portion 41 and is in sliding contact with the vehicle exterior surface of the door glass DG. . The glass seal 32 is gradually thinner toward the upper edge. In addition, a metal core portion 46 that is insert-molded when the rear mold portion 13 is formed is embedded in the vehicle exterior seal portion 43 (see FIG. 5). The core part 46 is formed integrally with an embedded member embedded in the main body part 31.

  As shown in FIG. 3, the terminal accommodating portion 33 is provided at an upper front position of the second plate-shaped portion 35 so as to protrude from the upper portion of the third plate-shaped portion 36 to the outside of the vehicle, and the glass inner weather strip. A receiving portion 48 having a substantially U-shaped cross section that can accommodate the base portion of the glass inner weather strip, and a covering portion 49 that abuts the end (rear end surface) on the rear side of the glass inner weather strip. The vehicle interior seal portion 42 is formed continuously with the vehicle exterior wall portion of the terminal accommodating portion 33 (see FIG. 4).

  It should be noted that the glass outer weatherstrip disposed outside the passenger compartment with the window portion W closed closes the rear mold portion 13 in order to sufficiently exert functions such as preventing rainwater from entering and wind noise. Also extends to the rear edge of the rear door 1. On the other hand, the glass inner weather strip is configured to be shorter than the glass outer weather strip, and the rear end of the glass inner weather strip is in front of the rear edge of the door glass DG with the window W closed. It is accommodated in the terminal accommodating part 33 to be arranged.

  Now, as shown in FIG. 5, in the present embodiment, the sliding member made of a material harder than the glass seal 32 (having a low friction coefficient) with respect to the inner surface of the glass seal 32 that is in sliding contact with the door glass DG. A sliding tape 51 is affixed. The sliding tape 51 is made of a fluororesin (a resin in which polytetrafluoroethylene is blended), and the sliding property of the door glass DG can be improved by sticking the sliding tape 51.

  Further, the sliding tape 51 is bent and pasted along the base portion 41, the vehicle interior seal portion 42, and the vehicle exterior seal portion 43. In this embodiment, the upper edge portion of the glass seal 32 and the sliding tape are attached. The top edge of 51 is perfectly aligned.

  Next, the manufacturing process of the rear mold part 13 (glass seal 32) will be described. First, the rear end of the extrusion molding part 11 is set in a mold for molding the rear molding part 13 and the mold is clamped. Subsequently, unvulcanized EPDM is injected into the mold cavity and filled. After vulcanization, the mold is opened and the molded rear mold part 13 is removed from the mold. As shown in FIG. 6, in this embodiment, when the rear mold part 13 is molded, the surplus part 52 extending upward from the entire upper edge of the glass seal 32 is integrated with the glass seal 32. Formed. The surplus portion 52 is referred to as a so-called “burr”, but in this embodiment, the uncured portion 52 is surely formed over the entire upper edge portion of the glass seal 32. The pressure at the time of injecting EPDM into the mold cavity and the clamping force are appropriately adjusted.

  Thereafter, as shown in FIG. 7, the sliding tape 51 is adhered to the glass mold 32 and the surplus portion 52 with respect to the molded rear mold portion 13. In the present embodiment, the inner side surface of the glass seal 32 to which the sliding tape 51 is attached and the inner side surface of the surplus portion 52 are flush with each other at the boundary between the glass seal 32 and the surplus portion 52. Yes. Further, the surplus portion 52 is thinner than the glass seal 32, and a step 53 is formed along the boundary between the outer surface of the glass seal 32 and the outer surface of the surplus portion 52.

  And the boundary part of the glass seal 32 and the surplus part 52 is cut | disconnected, and the site | part stuck to the surplus part 52 among the surplus part 52 and the sliding tape 51 is removed from the glass seal 32. FIG. As described above, the rear mold part 13 in which the upper edge part of the glass seal 32 and the upper edge part of the sliding tape 51 are exactly aligned can be obtained.

  As described above in detail, according to the present embodiment, the upper edge portion of the glass seal 32 and the upper edge portion of the sliding tape 51 are exactly aligned. Therefore, the rigidity of the upper edge portion of the glass seal 32 is increased while avoiding a situation in which the sliding tape 51 protrudes upward from the upper edge portion of the glass seal 32 and the appearance quality is deteriorated. It is possible to prevent a situation in which the upper edge of the glass seal 32 is torn due to repeated raising and lowering. Moreover, the sliding property of the door glass DG can be improved by sticking the sliding tape 51 on the inner surface of the glass seal 32. In particular, in this embodiment, since the sliding tape 51 is stuck to the upper edge part of the glass seal 32, the effect of improving the slidability of the door glass DG is more reliably achieved.

  In addition, the surplus portion 52 is formed by appropriately adjusting the pressure at the time of injecting the constituent material of the glass seal 32 into the mold cavity and the clamping force. For this reason, the conventional mold apparatus can be used as it is.

  Even if the surplus portion 52 is not intentionally formed, the surplus portion 52 (so-called “burr”) may be formed at the butt portion of the mold. However, when the surplus portion 52 is not formed even at a part of the upper edge portion of the glass seal 32, it becomes difficult to align the upper edge portion of the glass seal 32 and the upper edge portion of the sliding tape 51. There is a concern that Moreover, there is a possibility that the glass seal 32 main body is cut forcibly and the workability is lowered if the glass seal 32 is carefully cut. On the other hand, such an inconvenience can be avoided by intentionally forming the excess portion 52 over the entire upper edge portion of the glass seal 32 as in the present embodiment.

  In addition, the inner surface of the glass seal 32 to which the sliding tape 51 is attached is flush with the inner surface of the surplus portion 52. For this reason, for example, when a step is formed at the boundary between the glass seal 32 and the surplus portion 52 on the inner surface to which the sliding tape 51 is adhered, the sliding tape 51 floats at the boundary. The upper end edge of the glass seal 32 and the end edge of the sliding tape 51 are not neatly aligned even when cut along the boundary due to being stuck or being copied following the step. The situation can be prevented.

  Furthermore, the surplus portion 52 is configured to be thinner than the glass seal 32, and a step 53 is formed along the boundary between the outer surface of the glass seal 32 and the outer surface of the surplus portion 52. Therefore, the step 53 serves as a mark for excision, and the portion to be excised (remaining portion 52) is surely excised, and the situation in which the portion that should not be excised (the main body of the glass seal 32) is excised. be able to. Moreover, if it cuts out along the level | step difference 53, the situation where the upper edge part of the glass seal 32 after cutting off the surplus part 52 will be distorted (it will become a wavy shape) can be suppressed, The quality can be improved.

  In the present embodiment, since the sliding tape 51 is firmly attached to the upper edge portion of the glass seal 32, even if the upper edge portion of the glass seal 32 is thin, the upper edge portion of the glass seal 32 is used. Can be prevented from being broken. In addition, since the sliding tape 51 has higher rigidity than the glass seal 32, even if the thickness of the sliding tape 51 itself is thin, sufficient effects are exerted. Therefore, when the glass seal 32 including the sliding tape 51 becomes thick, when the glass seal 32 and the door glass DG are pressed against each other, the gap between the door glass DG and the glass seal 32 is increased. It is possible to prevent a situation in which a relatively large level difference is generated and appearance quality is deteriorated. Furthermore, since the friction coefficient of the sliding tape 51 itself is low, even if the rigidity of the glass seal 32 is increased by sticking the sliding tape 51, the sliding property of the door glass DG is reduced. Absent.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, in the above embodiment, the sliding tape 51 is attached after the rear mold forming portion 13 (glass seal 32) is formed. And may be joined together.

  In this case, as a method of manufacturing the rear mold part 13, first, a sliding tape is applied to a part (middle plate of the mold) for molding the glass seal 32 in the mold for molding the rear mold part 13. 51 is mounted so that a part thereof extends upward from the upper edge of the glass seal 32 after molding. Next, the mold cavity is filled with unvulcanized EPDM and vulcanized, so that a surplus portion 52 extending upward from the upper edge of the glass seal 32 is formed integrally with the glass seal 32. At the same time, the glass seal 32 and the sliding tape 51 are joined. And a metal mold | die is opened and the back mold forming part 13 is taken out.

  Thereafter, the boundary between the glass seal 32 and the surplus portion 52 is cut, and the portion of the surplus portion 52 and the sliding tape 51 attached to the surplus portion 52 is removed from the glass seal 32. As described above, the rear mold part 13 in which the upper edge part of the glass seal 32 and the upper edge part of the sliding tape 51 are exactly aligned can be obtained. When adopting the configuration, the glass seal 32 and the sliding tape 51 can be firmly fixed, and the sliding tape 51 is displaced with respect to the glass seal 32 due to repeated raising and lowering of the door glass DG. The situation where it peels off can be prevented.

  (B) In the above embodiment, the surplus portion 52 is intentionally (positively) formed with respect to the upper edge portion of the glass seal 32, but the surplus portion 52 is formed at the upper edge portion of the glass seal 32. For this purpose, it is not necessary to mold the rear mold part 13 (glass seal 32) (including the case where the surplus part 52 is formed without intention). Also in this configuration, the sliding tape 51 is attached so as to protrude upward from the upper edge portion of the glass seal 32, and a portion of the sliding tape 51 that protrudes upward from the glass seal 32 (the surplus portion 52 is provided). If formed, the rear mold portion 13 having the sliding tape 51 attached to the upper edge portion of the glass seal 32 can be obtained by cutting off the surplus portion 52).

  (C) In FIG. 7, the sliding tape 51 is pasted so as not to protrude upward from the surplus portion 52, but it may stick out. However, from the viewpoint of cost reduction, it is desirable to attach the sliding tape 51 so that it does not protrude upward from the excess portion 52. From the viewpoint of cost reduction, it is desirable that the extension length of the surplus portion 52 protruding upward from the glass seal 32 and the amount of the sliding tape 51 attached to the surplus portion 52 are small. If the amount is too small, the upper edge portion of the glass seal 32 may not be cut well. Therefore, the protruding length of the surplus portion 52 and the amount of the sliding tape 51 attached to the surplus portion 52 are secured to some extent. It is desirable.

  (D) Although not particularly mentioned in the above embodiment, in the case where the glass seal 32 is configured to be in sliding contact with the door glass DG at the end edge portion (the front edge portion of the vehicle outer side seal portion 43) other than the upper edge portion. In addition to forming a surplus portion at the edge portion, the sliding tape 51 is adhered to the surplus portion and the glass seal 32, and the boundary portion between the surplus portion and the glass seal 32 is cut. Also good.

  (E) In the above-described embodiment, the sliding tape 51 made of a fluororesin is employed. However, a sliding tape made of polyurethane, polypropylene, or the like may be employed. However, when the configuration (a) is adopted, the sliding tape 51 is made of a material that does not melt during vulcanization (for example, polyamide, polyimide, etc.). Moreover, in the said embodiment, although the door weather strip 3 is comprised by EPDM, you may comprise by another raw materials, such as an olefin type thermoplastic elastomer (TPO). Moreover, although the core part 46 is comprised with the metal, you may comprise with the resin material (same material as the embed | buried member embed | buried under the main-body part 31) harder than the rear mold part 13. FIG. In addition, the embedded member embedded in the main body 31 may be made of metal. However, it is desirable to employ a resin material in order to reduce the weight of the door weather strip 3.

  (F) In the above embodiment, the embodiment is embodied in the door weather strip 3 attached to the front door, but is applied to a door weather strip and a glass outer weather strip attached to other doors (rear doors and the like). Also good.

It is a front schematic diagram which shows schematic structure of a door. It is the JJ sectional view taken on the line of FIG. 1 which shows a door weather strip. It is a perspective view which shows the back mold part seen from the vehicle outer side (attachment surface side). It is a perspective view which shows the back mold part seen from the vehicle inner side (exposed surface side). It is the LL sectional view taken on the line of FIG. 1 which shows a glass seal. It is sectional drawing which shows the manufacturing process of a glass seal. It is sectional drawing which shows the manufacturing process of a glass seal.

DESCRIPTION OF SYMBOLS 1 ... Door, 3 ... Door weather strip, 5 ... Retainer part, 11 ... Extrusion part, 13 ... Rear mold part, 15 ... Mounting base part, 16 ... Seal part, 31 ... Main part, 32 ... Glass seal, 51 ... sliding tape, 52 ... remaining portion, 53 ... step, DG ... door glass, W ... window.

Claims (2)

A mounting base that is attached along the outer periphery of the frameless door, and a seal that is integrally formed with the mounting base and is pressed against the peripheral edge of the door opening formed in the vehicle body when the door is closed. As well as
Provided with molded parts at both end portions arranged corresponding to the belt line,
At least one of the molded parts includes a glass seal having a substantially U-shaped cross section that seals the vertical edge of the door glass,
The inner surface of the glass seal that is in sliding contact with the raising and lowering door glass is a method of manufacturing a door weather strip for a frameless door to which a sheet-like sliding member is attached,
A part of the sliding member extends upward from the upper edge of the glass seal after molding the part of the mold for molding the mold molding part with respect to the part for molding the glass seal. A process of attaching to,
The mold cavity is filled with a material for forming the mold forming part, and a surplus part extending upward from the upper edge of the glass seal is formed integrally with the glass seal, and the material for forming the mold is formed. And joining the sliding member;
Opening the mold and taking out the molded part;
Cutting the boundary between the glass seal and the surplus part, and removing the part attached to the surplus part of the surplus part and the sliding member from the glass seal ,
In the step of joining the forming material and the sliding member, at the boundary between the glass seal and the surplus portion, the inner surface of the glass seal to which the sliding member is attached, and the surplus portion A method of manufacturing a door weather strip for a frameless door, wherein the inner surface of the portion is flush with the inner surface . The meat remainder portion is formed to be thinner than the glass seal, frameless according to claim 1, characterized in that so as to form a step along the boundary between the glass seal and the wall remainder portion Manufacturing method of door weather strip.

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