JP4356888B2 - Weather Strip - Google Patents

Description

  The present invention relates to a long weatherstrip that is mounted along the edge of a door trim so as to seal between a window opening edge and a window plate inside a vehicle door.

As a weather strip mounting structure, for example, as described in Patent Document 1 (Japanese Patent No. 30000285), a base material is inserted into a gap formed between the head of the weather strip and the holding portion, For attaching a weatherstrip to a base material, the weatherstrip holding part and the rib of the base material are welded, or the weatherstrip holding part is fastened to the base material with a rivet. Is fixed to the base material.
Japanese Patent No. 30000285 (Page 5, etc.)

  By the way, in the weather strip to be mounted along the edge of the door trim so as to seal between the window opening edge and the window plate on the inside of the vehicle, the technique of Patent Document 1 is used to assemble the weather strip without rattling. Then, it is conceivable to fix the weather strip to the door trim or the window opening edge by welding or rivets. However, in this case, when the weather strip is assembled, the work of welding the weather strip and the operation of fastening with a rivet are required, which complicates the work of assembling the weather strip and increases the number of assembling steps. There are drawbacks in that the workability is reduced and the manufacturing cost is increased.

  The present invention has been made in view of such circumstances. Therefore, the object of the present invention is to assemble the weather strip without rattling while satisfying the requirements for improving the workability and reducing the cost. Is to be able to do it.

In order to achieve the above object, the weather strip according to claim 1 of the present invention is mounted along the edge of the door trim so as to seal between the window opening edge inside the vehicle door and the window plate. A long weather strip having a locking portion locked to an edge of the door trim and a leg portion extending downward from the locking portion and disposed between the flange of the window opening edge and the window plate An elastic material that is softer than the main body, and includes a seal lip that is provided so as to protrude from the main body to the outside of the vehicle by an elastic material that is softer than the main body, and that can contact the inside surface of the window plate When the first urging means is provided on the upper side of the vehicle interior side of the main body, and the door trim and the weather strip are attached together at a predetermined position of the vehicle with the weather strip attached to the door trim, This first appendix With means to permit holding the locking portion urges the locking portion upward by contact with the upper end of the flange is elastically deformed in a state in which to engage with the door trim, flexible elastic than the main body portion When the material is provided with a second urging means on the lower side of the vehicle interior of the leg, and the door trim and the weather strip are attached together at a predetermined position of the vehicle with the weather strip attached to the door trim In addition, the second urging means abuts against the outer side surface of the flange and elastically deforms, whereby the leg portion is urged toward the outer side and the locking portion can be pressed in the direction to lock the door trim. According to a first feature, the locking portion further includes an inner clamping piece and an outer clamping piece formed so as to sandwich the door trim from both the inner side and the outer side, and a distal end portion of the outer clamping piece Provided with locking claws The locking portion is locked to the edge of the door trim by locking the locking claw to the edge of the door trim in a state where the edge of the door trim is clamped by the inner and outer clamping pieces. This is a second feature.

  In this configuration, when the weather strip is assembled (when the door trim fitted with the weather strip is attached to a predetermined position of the vehicle), the elasticity when the first urging means abuts against the upper end of the flange and is elastically deformed. When the locking portion can be urged upward by force to hold the locking portion in a locked state with the door trim, and when the second urging means abuts against the outer surface of the flange and elastically deforms It is possible to urge the leg (the lower part of the main body part) toward the outside of the vehicle with the elastic force and press the locking part (the upper part of the main body part) firmly to the door trim. Can be assembled without rattling. In addition, when the weather strip is assembled, it is not always necessary to fix the weather strip with welding or rivets, so that the operation of assembling the weather strip can be simplified and the number of assembling steps can be reduced. It is possible to meet the demands for improved workability and lower costs.

In the invention according to claim 1 , the weather strip locking portion has a pair of clamping pieces (an inner clamping piece and an outer clamping piece) formed so as to sandwich the door trim from both the inside and outside. A locking claw is provided at the tip of the outer clamping piece, and the engagement claw is locked to the edge of the door trim while the edge of the door trim is clamped by the inner and outer clamping pieces. stop portion is configured so that the locking on the edge of the door trim. If it does in this way, the latching | locking part of a weather strip can be reliably latched to the edge of a door trim, and the stable mounting state can be maintained.
Further, according to a second aspect of the present invention, the locking portion is locked to the edge of the door trim by holding the convex engagement portion formed on the edge of the door trim with the inner and outer holding pieces. You may comprise. If it does in this way, the latching | locking part of a weather strip can be latched more reliably by the edge of a door trim.

  Further, as in the third aspect, a slit fitted to a convex portion formed on the inner surface of the door trim may be formed at a predetermined position in the longitudinal direction of the inner clamping piece. In this way, when the weather strip is assembled, the weather strip can be positioned in the longitudinal direction by fitting the slit of the inner clamping piece to the convex portion of the inner surface of the door trim. Later displacement can also be prevented.

  According to a fourth aspect of the present invention, the leg portion and the outer holding piece are formed continuously in a substantially flat plate shape, and the leg portion and the inner holding piece are interposed through a stepped portion protruding from the upper end of the leg portion to the vehicle inner side. The pieces may be connected to each other, and the first urging means may be provided on the lower surface of the stepped portion. In this way, it is possible to prevent the first urging means from being elastically deformed excessively by the step portion.

  Although various shapes can be considered for the first urging means, for example, the first urging means may be formed in a lip shape so as to protrude toward the inner side of the vehicle. If it does in this way, a latching part can be urged | biased upwards with the elastic force when a 1st lip-form biasing means contact | abuts to the upper end of a flange and elastically deforms.

  Alternatively, as in claim 6, the first urging means may be formed in a hollow shape so as to protrude to the inside of the vehicle. If it does in this way, a latching part can be urged | biased upward with the elastic force when a hollow 1st biasing means contact | abuts to the upper end of a flange and elastically deforms.

  When the seal lips are provided on the upper side and the lower side of the vehicle body outside the vehicle as in claim 7, the second urging means is provided on the lower side of the main body. It may be provided at a position corresponding to the root portion of the lip. If it does in this way, a leg part (lower part of a main-body part) will be excessively pressed on the flange side with the elastic force when the seal lip provided in the lower part of the main-body part contacts a window plate, and elastically deforms. This can be effectively prevented by the elastic force when the second urging means abuts against the flange and is elastically deformed.

  Further, as in claim 8, the seal lip, the first urging means and the second urging means are preferably integrally formed with the main body portion by co-extrusion molding with the same material. If it does in this way, the weather strip of this invention can be manufactured efficiently.

  Hereinafter, the best mode for carrying out the present invention will be described using three Examples 1 to 3.

A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a window frame 12 is integrally provided on a front door 11 of an automobile, and a window plate 13 is provided with respect to the window frame 12 so that the window plate 13 can be opened and closed. A long weather strip 16 (also referred to as “inner belt molding”) is attached along the upper edge of the door trim 15 attached to the inner panel 14 of the door 11. As shown in FIG. 2, the weather strip 16 seals between the upper edge flange 17 provided on the upper edge of the inner panel 14 (the window opening edge inside the vehicle) and the window plate 13. Yes. The upper edge flange 17 of the inner panel 14 is reinforced by a reinforcing panel 18. Hereinafter, the upper edge flange 17 including the reinforcing panel 18 may be referred to.

  Next, the structure of the weather strip 16 is demonstrated based on FIG.2 and FIG.3. As shown in FIG. 3, the weather strip 16 is a long extrusion formed by continuously cutting a polymer material such as rubber, synthetic resin, or thermoplastic elastomer into a predetermined length. It is a product. As shown in FIG. 2, the weather strip 16, in the mounted state, includes a locking portion 19 that is locked to the upper edge of the door trim 15, and an upper edge flange 17 that extends downward from the locking portion 19 and extends to the inner panel 14. A main body portion 21 having a leg portion 20 disposed between the window plate 13 and an upper side portion of the main body portion 21 is provided so as to protrude to the vehicle outer side (window plate 13 side) as indicated by a two-dot chain line. The elastically deformable seal lip 22 and the elastically deformable seal continually provided along the longitudinal direction so as to protrude slightly downward from the upper side of the main body 21 as shown by a two-dot chain line. Continuously along the longitudinal direction so as to protrude slightly upward inside the vehicle from the lower end of the main body 21 as shown by a two-dot chain line with the first lip-shaped locking lip 23 (first urging means) Elastically deformable lip shape The second locking lip 24 (second urging means) is fused and integrated at the joint with the main body 21 by coextrusion with a polymer material having compatibility with the material of the main body 21. Yes.

  The first and second locking lips 23, 24 have a protruding length toward the vehicle inner side (tip position of the locking lip) of the first locking lip 23 than that of the second locking lip 24. Is set to be larger. Thereby, when attaching the weather strip 16 to the predetermined position of the vehicle body, it is possible to prevent erroneous attachment such that the first locking lip 23 is attached to be positioned outside the upper edge flange 17.

  The polymer material forming the main body 21 (the locking portion 19 and the leg portion 20) of the weather strip 16 is thermoplastic such as TPO (olefin-based thermoplastic elastomer) that is hard (for example, durometer hardness according to JIS K7215 is about HDD 60). Elastomer is used. Further, the polymer material for forming the seal lip 22, the first locking lip 23, and the second locking lip 24 is softer than the main body 21 (for example, durometer hardness according to JISK7215 is about HDA 70) and flexible TPO, etc. These thermoplastic elastomers are used. A low friction material layer 25 is formed on the surface of the seal lip 22 (at least the contact surface with the window plate 13) by flocking such as nylon pile.

  The locking portion 19 of the weather strip 16 has a pair of sandwiching pieces 26 and 27 formed so as to sandwich the tip of an extension portion 15a extending from the upper edge of the door trim 15 toward the lower side from both the inside and the outside. Is provided. The inner clamping piece 26 and the leg portion 20 are connected to each other through a step portion 28 that protrudes from the upper end of the leg portion 20 toward the vehicle interior, and a first locking lip 23 is provided on the lower surface of the step portion 28. ing. In this case, excessive deformation of the first locking lip 23 is prevented by the step portion 28, and as a result, the work for attaching the weather strip 16 to the vehicle body is facilitated.

  On the other hand, the outer holding piece 27 and the leg portion 20 are formed continuously in a substantially flat plate shape, and a locking claw 29 is provided at the tip of the outer holding piece 27. The outer holding piece 26 and the outer holding piece 27 hold the convex engagement portion 30 formed at the tip of the extending portion 15a extending from the upper edge of the door trim 15 toward the lower side. The locking portion 19 is locked to the upper edge of the door trim 15 by locking the 27 locking claws 29 to the convex engaging portion 30 of the door trim 15.

  Further, a slit 31 (see FIG. 3) is provided at a predetermined position in the longitudinal direction of the inner clamping piece 26, and the slit 31 is formed on a rib 32 (protrusion) formed on the inner surface of the extension portion 15 a of the door trim 15. Part).

  As shown in FIG. 3, when the weather strip 16 is assembled, first, as shown by the arrow A, the door trim 15 is inserted into the groove between the holding pieces 26 and 27 provided in the locking portion 19 of the weather strip 16. The convex engagement part 30 provided in the extension part 15 a is inserted, and the locking part 19 of the weather strip 16 is locked to the extension part 15 a of the door trim 15. At that time, the slit 31 of the inner clamping piece 26 is fitted to the rib 32 of the door trim 15 to position the weather strip 16 in the longitudinal direction, and the weather strip 16 of the assembled weather strip 16 in the vehicle front-rear direction. Prevent misalignment. Thereafter, as shown by an arrow B, the leg 20 of the weather strip 16 attached to the door trim 15 is inserted between the upper edge flange 17 of the inner panel 14 and the window plate 13, and then the door trim is applied to the inner panel 14. 15 is fixed at a predetermined position with a clip or the like (not shown). Thereby, the weather strip 16 is arrange | positioned in a predetermined position.

  As shown in FIG. 2, when the weather strip 16 is assembled (when the door trim 15 with the weather strip 16 attached is attached to the inner panel 14), the seal lip 22 comes into contact with the inner side surface of the window plate 13. The space between the upper edge flange 17 of the inner panel 14 and the window plate 13 is sealed. Further, when the weather strip 16 is assembled, the first locking lip 23 comes into contact with the upper end of the upper edge flange 17 and elastically deforms, whereby the elastic force (elastic force) of the first locking lip 23 is obtained. Thus, the locking portion 19 is urged upward to stably hold the locking portion 19 in the state of being locked to the door trim 15. Further, when the weather strip 16 is assembled, the second locking lip 24 is elastically deformed so as to bend against the vehicle outer side surface of the upper edge flange 17 (reinforcing panel 18), thereby the second locking lip. The leg portion 20 (the lower side portion of the main body portion 21) is urged toward the vehicle exterior by the elastic force of 24, and the locking claw 29 of the locking portion 19 (the upper side of the main body portion 21) is engaged with the convex engagement of the door trim 15. It pushes in the direction which makes the part 30 latch firmly.

  Further, the first locking lip 23 and the second locking lip 24 are brought into contact with the upper end of the upper edge flange 17 (reinforcing panel 18) and the vehicle outer surface, respectively, so that dust or the like moves toward the vehicle inner side of the inner panel 14. In addition to preventing intrusion, the sound insulation between the inside and outside of the vehicle is improved.

  In the first embodiment described above, when the weather strip 16 is assembled (when the door trim 15 fitted with the weather strip 16 is attached to the inner panel 14), the first locking lip 23 is formed on the upper edge flange 17. The latching portion 19 can be urged upward by the elastic force when it abuts on the upper end and is elastically deformed to hold the latching portion 19 in the state of being latched to the door trim 15, and the second latching When the lip 24 abuts against the vehicle outer side surface of the upper edge flange 17 (reinforcing panel 18) and elastically deforms, the leg portion 20 is urged to the vehicle outer side and the locking portion 19 is firmly locked to the door trim 15. The weather strip 16 can be assembled without rattling because it can be pressed in the direction in which it is to be pushed. In addition, when the weather strip 16 is assembled, it is not always necessary to fix the weather strip 16 with clips and welding or rivets, so that the operation of assembling the weather strip 16 can be simplified and the number of assembling steps can be reduced. Therefore, it is possible to satisfy the demands for improvement in assembly workability and cost reduction.

  Further, in the first embodiment, the locking portion 19 is attached to the door trim 15 by holding the convex engaging portion 30 of the door trim 15 by the pair of holding pieces 26 and 27 provided on the locking portion 19 of the weather strip 16. Since the locking is performed, the locking portion 19 of the weather strip 16 can be reliably locked to the door trim 15, and the mounting state of the weather strip 16 to the door trim 15 can be stably maintained.

  Further, in the first embodiment, since the slits 31 that fit the ribs 32 of the door trim 15 are formed in the inner clamping piece 26, when the weather strip 16 is assembled, the slit 31 of the inner clamping piece 26 is formed in the door trim 15. By fitting with the ribs 32, the weather strip 16 can be positioned in the longitudinal direction, and positional deviation in the vehicle front-rear direction with respect to the door trim 15 after the weather strip 16 is assembled can be prevented.

  In the first embodiment, the first locking lip 23 is provided on the lower surface of the stepped portion 28 that connects the leg 20 and the inner clamping piece 26. It is possible to prevent the stepped portion 28 from excessively elastically deforming upward.

  In the first embodiment, the seal lip 22, the first locking lip 23, and the second locking lip 24 are made of the same material by co-extrusion molding with the main body 21 (the locking portion 19 and the leg portion 20). Since it is integrally formed, the weather strip 16 can be manufactured efficiently.

  Next, Embodiment 2 of the present invention will be described with reference to FIG. However, substantially the same parts as those in the first embodiment are denoted by the same reference numerals, and the description will be simplified. The parts different from the first embodiment will be mainly described.

  In the first embodiment, as the first urging means for urging the locking portion 19 upward from the lower surface of the step portion 28 of the weather strip 16 to the upper side of the vehicle interior of the leg portion 20, it is formed in a lip shape. Although the first locking lip 23 is provided, in the second embodiment, as shown in FIG. 4, the locking portion 19 is urged upward on the lower surface of the step portion 28 of the weather strip 33. As one urging means, a locking projection 34 formed in a hollow shape is provided. A hollow portion 35 extending in the longitudinal direction is formed inside the locking projection 34, and when the weather strip 33 is assembled, the hollow locking projection 34 contacts the upper end of the upper edge flange 17. By being elastically deformed, the locking portion 19 is urged upward by the elastic force of the locking projection 34 so that the locking portion 19 is locked to the door trim 15.

  In the second embodiment described above, the locking portion 19 is urged upward by the elastic force when the hollow locking projection 34 abuts on the upper end of the upper edge flange 17 and is elastically deformed. Since 19 can be held in a state of being locked to the door trim 15, the sound insulation can be further improved by the action of the double wall as compared with the first embodiment.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. However, substantially the same parts as those in the first embodiment are denoted by the same reference numerals, and the description will be simplified. The parts different from the first embodiment will be mainly described.

  In the first embodiment, the seal lip 22 is provided only on the upper portion of the main body portion 21 of the weather strip 16, but in the third embodiment, as shown in FIG. The upper seal lip 22 is provided at the part, and the lower seal lip 37 is provided at the lower part of the main body part 21 (lower part of the leg part 20). On the surface of the lower seal lip 37 (at least the contact surface with the window plate 13), a low friction material layer 38 is formed by flocking such as nylon pile. A plurality of protrusions 39 extending in the longitudinal direction are formed on the surface of the first locking lip 23 (at least the contact surface with the upper edge flange 17), and these protrusions 39 are the ends of the upper edge flange 17. The first locking lip 23 is prevented from being detached from the upper end of the upper edge flange 17 by being caught on the edge.

  Further, the base portion of the second locking lip 24 is positioned at the lower end portion of the leg portion 20 on the vehicle outer side and at the position corresponding to the base portion of the lower seal lip 37. In this way, the leg portion 20 (the lower portion of the main body portion 21) is excessively pressed against the upper edge flange 17 side by the elastic force when the lower seal lip 37 comes into contact with the window plate 13 and elastically deforms. This can be effectively prevented by the elastic force when the second locking lip 24 abuts against the upper edge flange 17 and is elastically deformed.

  In each of the first to third embodiments, the present invention is applied to the weather strip attached to the front door. However, the present invention is not limited to this, and the present invention may be applied to a weather strip attached to the rear door.

  In addition, the present invention departs from the gist such that the shape of each part of the weather strip (locking portion, leg portion, seal lip, first locking lip, second locking lip, etc.) may be changed as appropriate. Various modifications can be made without departing from the scope.

  For example, in each of the first to third embodiments, the convex engagement provided on the extending portion 15a of the door trim 15 in the engagement groove (groove between both the sandwiching pieces 26 and 27) provided on the engagement portion 19 of the weather strip. The joint portion 30 is locked, but conversely, the convex engagement portion provided in the locking portion 19 of the weather strip is engaged with the locking groove provided in the extending portion 15a of the door trim 15. You may make it stop.

  Furthermore, depending on the shape and position of the upper edge flange 17 of the inner panel 14, the first locking lip 23 and the locking protrusion 34 may be provided on the holding piece 26 corresponding to this.

  Further, the number of slits 31 provided in the sandwiching piece 26 is not limited to one, and a plurality of slits 31 may be provided, and may be appropriately changed according to the rib 32 provided in the door trim 15.

It is a schematic block diagram of the front door in Example 1 of this invention. It is AA sectional drawing of FIG. It is a perspective view for demonstrating the assembly method of a weather strip. It is sectional drawing of the weather strip of Example 2, and its periphery. It is sectional drawing of the weather strip of Example 3, and its periphery.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Front door, 13 ... Window board, 14 ... Inner panel, 15 ... Door trim, 16 ... Weather strip, 17 ... Upper edge flange, 19 ... Locking part, 20 ... Leg part, 21 ... Main part, 22 ... Seal lip , 23 ... first locking lip (first urging means), 24 ... second locking lip (second urging means), 26, 27 ... clamping pieces, 28 ... step, 29 ... engagement Stopper claw, 30 ... convex engaging portion, 31 ... slit, 32 ... rib (convex portion), 33 ... weather strip, 34 ... locking projection (first biasing means), 36 ... weather strip, 37 ... Seal lip

Claims (8)

A long weather strip mounted along the edge of the door trim to seal between the window opening edge inside the vehicle door and the window plate;
The weatherstrip is
A main body having a locking portion locked to an edge of the door trim, and a leg portion extending downward from the locking portion and disposed between the flange of the window opening edge and the window plate;
A seal lip that is provided so as to protrude from the main body to the vehicle outer side by an elastic material that is softer than the main body, and is capable of contacting the inner surface of the window plate;
The door trim and the weather strip are attached to a predetermined position of the vehicle together with the weather strip attached to the door trim. A first urging force capable of urging the locking portion upward by abutting the upper end of the flange and elastically deforming and holding the locking portion locked to the door trim . Means,
It is provided on the lower side of the leg inside the vehicle body by an elastic material that is softer than the main body, and the door trim and the weather strip are put together in a predetermined position of the vehicle with the weather strip attached to the door trim. When attached, a second attachment that can be pressed in a direction in which the leg portion is urged toward the outside of the vehicle by abutting against the outside surface of the flange and elastically deforming to lock the locking portion to the door trim . And means,
The locking portion has an inner clamping piece and an outer clamping piece formed so as to sandwich the door trim from both the inner side and the outer side, and a locking claw is provided at the tip of the outer clamping piece, The locking portion is locked to the edge of the door trim by locking the locking claw to the edge of the door trim in a state where the edge of the door trim is clamped by the inner and outer clamping pieces. A weatherstrip that is characterized by   The locking portion is configured to be locked to an edge of the door trim by clamping a convex engagement portion formed on an edge of the door trim with the inner and outer clamping pieces. The weather strip according to claim 1.   The weather strip according to claim 2, wherein a slit that is fitted to a convex portion formed on an inner surface of the door trim is formed at a predetermined position in the longitudinal direction of the inner clamping piece.   The leg portion and the outer clamping piece are formed continuously in a substantially flat plate shape, and the leg portion and the inner clamping piece are interposed through a stepped portion protruding from the upper end of the leg portion to the vehicle interior side. 4. The weather strip according to claim 2, wherein the weather strip is connected and the first urging means is provided on a lower surface of the stepped portion.   The weather strip according to any one of claims 1 to 4, wherein the first urging means protrudes inward of the vehicle and is formed in a lip shape.   The weather strip according to any one of claims 1 to 4, wherein the first urging means is formed in a hollow shape so as to protrude toward the inner side of the vehicle. The seal lip is provided on each of an upper side portion and a lower side portion on the vehicle outer side of the main body portion,
The said 2nd biasing means is provided in the position corresponding to the base part of the seal lip provided in the lower side part of the said main-body part, The Claim 1 thru | or 6 characterized by the above-mentioned. Weather Strip.   8. The seal lip, the first urging means, and the second urging means are integrally formed with the main body portion by co-extrusion molding using the same material. Weather strip as described in.

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