CN219172153U

CN219172153U - Sealing strip

Info

Publication number: CN219172153U
Application number: CN202320177281.2U
Authority: CN
Inventors: 多谷本幸雄; 山木贵博
Original assignee: Nishikawa Rubber Co Ltd
Current assignee: Nishikawa Rubber Co Ltd
Priority date: 2023-01-20
Filing date: 2023-01-20
Publication date: 2023-06-13
Anticipated expiration: 2033-01-20

Abstract

The utility model provides a sealing strip capable of preventing the end of an extrusion molding part from being misplaced when the mold molding part is molded. The weather strip of the present utility model includes a die-forming portion having one end and the other end and being joined at one end to an extrusion-forming portion, the die-forming portion including: a base part which is installed and fixed on an installation seat surface arranged on any one of a car body and a car door; and a main seal portion protruding from the base portion and elastically contacting the other of the vehicle body and the vehicle door. The base has a protrusion provided on one side in the width direction of the mold forming portion, extending in the longitudinal direction of the mold forming portion and elastically contacting the mount surface, a base surface formed between one side and the other side in the width direction of the mold forming portion, facing or contacting the mount surface, and a bottomed groove formed between the protrusion and the base surface, extending from one end to the other end.

Description

Sealing strip

Technical Field

The present utility model relates to a weather strip (weather strip) for sealing a gap between vehicle body opening and closing portions.

Background

As a weather strip for automobiles, a weather strip described in japanese patent application laid-open No. 2009-179068 (patent document 1) has been conventionally known. The weather strip described in patent document 1 includes a die-formed portion and an extrusion-formed portion, and the ends of both are joined to each other.

The above conventional weather strip has the following problems. That is, when the end of the extrusion part is placed inside the mold of the mold forming part and the uncured polymer material is injected into the mold, the uncured material of high pressure extrudes the end of the extrusion part, pushing the end of the extrusion part away from the prescribed position. Then, the end of the extrusion molding part deviates from a predetermined position, and the mold molding part cannot be formed into a correct shape. This problem is particularly noticeable in thick-walled portions of the mold forming portion such as the base portion of the weather strip.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a weather strip capable of preventing misalignment of the end of an extrusion part at the time of molding the die-molded part.

In order to achieve the above object, a weather strip according to the present utility model is a weather strip that extends along and seals a gap between an automobile body and an automobile door, the weather strip including a mold-shaped portion having one end and the other end, and joined at one end to an extrusion-shaped portion, the mold-shaped portion including: a base part which is installed and fixed on an installation seat surface arranged on any one of a car body and a car door; and a main seal portion protruding from the base portion and elastically contacting the other of the vehicle body and the vehicle door. The base portion has a protrusion provided on one side in the width direction of the mold forming portion, extending in the length direction of the mold forming portion and elastically contacting the mount face, a base surface formed between one side and the other side in the width direction of the mold forming portion, facing the mount face or contacting the mount face, and a bottomed groove portion formed between the protrusion and the base surface, extending from one end to the other end in the length direction.

According to the present utility model, the groove portion corresponds to a protrusion provided on a die of the die forming portion hollowed out from the outside of the base surface at a junction with the press forming portion. Thus, when the high-pressure uncured material is injected into the inside of the mold forming section, the pressure of the uncured material is weakened in the vicinity of the groove section, thereby preventing dislocation of the extrusion forming section placed at the joint.

The groove portion may be one, but as a preferred aspect of the present utility model, the base portion further has: a second protrusion provided on the other side of the mold forming portion in the width direction, extending along the length direction of the mold forming portion, and elastically contacting the mounting seat surface; and a second groove portion with a bottom formed between the second protrusion and the base surface and extending from one end to the other end in the longitudinal direction of the mold forming portion. According to this aspect, the groove portions are provided in two, and therefore the pressure of the uncured material is weakened in the vicinity of the two groove portions, thereby further preventing dislocation of the extrusion-formed portions placed at the joint.

As one aspect of the present utility model, the automobile door is a sliding door that moves forward and backward in the front-rear direction of the automobile. As another aspect, the door may be a door that is rotated by a hinge.

The sealing strip defines one or more hollow spaces. For example, the base portion is hollow, the main seal portion is hollow, and a partition wall is provided to separate the two hollow spaces. The partition wall may be provided over the entire length direction, or may be partially omitted in the length direction. In a preferred aspect of the present utility model, a slit is formed in the base surface, and the slit extends along the longitudinal direction of the mold forming portion and is connected to the inner space of the weather strip. According to this aspect, the core inside the base can be easily extracted from the slit when the mold forming portion is taken out of the mold. In addition, the slit may not be formed on the base surface with respect to the position of the mold forming portion in the longitudinal direction.

As one aspect of the present utility model, the mold forming portion is a tail portion of the weather strip. The tail portion may have ears for mounting fixation. On the other hand, the mold forming portion may be a middle portion in the longitudinal direction of the weather strip.

As described above, according to the present utility model, when an uncured polymer material is injected while one end of an extrusion molded part is placed inside a die of a die molded part, misalignment of the extrusion molded part is prevented.

Drawings

Fig. 1 is an overall view of a weather strip according to an embodiment of the present utility model.

Fig. 2 is a perspective view showing the mold forming part of this embodiment removed.

Fig. 3 is a view showing a cross-sectional shape of the mold forming portion according to this embodiment.

10: sealing strip, 16: interval (extrusion part), 17: tail (die forming part), 21: sealing part, 24: base, 25: main seal, 26: base surface, 28: (first) tab, 29: second protrusion, 31: (first) groove portion, 32: second groove portion, 33: slit, 101: automotive body, 102: vehicle door, 104: and a sealing strip mounting seat surface.

Detailed Description

Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings. Fig. 1 is an overall view showing a weather strip according to an embodiment of the present utility model, showing a vehicle body viewed from a vehicle width direction. In the present specification, the front-rear direction refers to the forward and backward directions of the vehicle body.

A vehicle body 101 of an automobile is provided with a door 102 and a body opening 103. Passengers get on and off the vehicle through the vehicle body opening 103, and the front half of the vehicle body opening 103 is provided with a door 102, and the rear half is also provided with a door, not shown. The door 102 is a sliding door that is slidingly moved in the front-rear direction between a closed position covering the front half of the vehicle body opening 103 as shown by a solid line in fig. 1 and an open position moving forward away from the vehicle body opening 103 as shown by a broken line in fig. 1. The sliding movement is caused by unillustrated slide rails provided at the upper and lower edges of the vehicle body opening 103 and extending in the front-rear direction. Here, the door 102 is configured as: the vehicle moves in the vehicle width direction between an intermediate position covering the vehicle body opening 103 from the vehicle width direction outside and a closed position sealing the vehicle body opening 103 further inward in the vehicle width direction.

The weather strip 10 is a rubber-made sealing material provided at a gap between the vehicle body 101 and the door 102 in the closed position. The weather strip 10 is fixedly attached along the edge of the door 102 and is divided into a tail portion (end part) 11, a section 12, a corner portion 13, a section 14, a corner portion 15, a section 16, and a tail portion 17 in this order, and in the closed position of the door 102, the weather strip 10 extends continuously along the upper edge, the front edge, and the lower edge of the vehicle body opening 103.

In the weather strip 10, the

sections

12, 14, 16 extending substantially straight are long, and are made of extruded portions. The

corners

13, 15, where these

sections

12, 14, 16 are connected to each other, and the

tails

11, 17 provided at the other ends of the

sections

12, 16 are short, and are made of mold-formed sections.

Fig. 2 is an enlarged perspective view showing the lower end 17 of the weather strip 10 taken out. Tail 17 includes a seal 21 and an ear 22. The ear portion 22 is coupled to a longitudinal end portion of the seal portion 21, and is expanded in a direction intersecting the longitudinal direction, and is attached and fixed to a vehicle body (fig. 1) using a clip not shown. The shape of the ear portion 22 can be freely designed. Or the ears 22 may be omitted.

The joint surface 23 of the seal portion 21 at the longitudinal end opposite to the ear portion 22 is joined to the end of the extruded section 16. The joint surface 23 of the present embodiment is a plane corresponding to a vertical cross section in the longitudinal direction of the seal portion 21.

The tail 17 is formed by disposing the end of the section 16 adjacent to the inside of a mold, not shown, and injecting an uncured solid rubber material into the inside of the mold.

Fig. 3 is a view showing a cross section of the sealing portion 21, and corresponds to the joint surface 23 (fig. 2). Fig. 3 also shows the shape of the joint surface 23. The seal 21 includes a base 24 and a main seal 25. The base 24 is mounted and secured to a mounting surface 104 of the door 102. The main seal 25 protrudes from the base 24 and elastically contacts the door 102 in the closed position to seal the gap G1. The gap G1 is a gap between the vehicle body 101 and the door 102 in the closed position. In the present embodiment, the base portion 24 is disposed on the vehicle width direction outer side (the door 102 side), and the main seal portion 25 is disposed on the vehicle width direction inner side (the vehicle body 101 side).

The base 24 and the main seal 25 are hollow and each formed of a rubber wall having a predetermined thickness. Their inner spaces are partitioned by partition walls 34 made of the same rubber material. A sub seal 27 is integrally formed on the lower surface of the main seal 25. The sub seal 27 is a wall made of the same rubber material, protrudes downward from the main seal 25, and elastically contacts the vehicle body 101 to seal the gap G2. The gap G2 is a gap between the main seal portion 25 and the vehicle body 101.

The base 24 has a base surface 26, a first projection 28, a second projection 29, bottomed

groove portions

31, 32, and a bottomless slit 33. The base surface 26 is a flat surface extending along the longitudinal direction of the sealing portion 21, and faces or contacts the mount surface 104. The first projection 28 and the second projection 29 are provided on both sides in the width direction of the base surface 26, respectively, protrude from the base surface 26, and extend along the longitudinal direction of the seal portion 21.

The

grooves

31 and 32 are recessed from the base surface 26, and extend along the longitudinal direction of the seal portion 21 at the boundary between the first protrusion 28 and the base surface 26 and the boundary between the second protrusion 29 and the base surface 26. The slit 33 is formed in the widthwise center of the base surface 26, extends along the longitudinal direction of the seal portion 21, and penetrates the rubber wall of the base surface 26. The slit 33 serves as a coring hole.

As shown in fig. 3, the base surface 26, the first projection 28, the second projection 29, the first groove 31, the second groove 32, and the slit 33 are connected to the joint surface 23. The base surface 26, the first projection 28, and the second projection 29 extend from one end to the other end of the seal portion 21. In contrast, the longitudinal dimension Ld (fig. 2) of the first groove 31 and the second groove 32 is not particularly limited, and is shorter than the longitudinal dimension of the seal portion 21. In the present embodiment, the longitudinal dimension of the seal portion 21 is greater than 30mm, ld=30 mm. The groove depth of the first groove portion 31 and the second groove portion 32 was 1.3mm.

In other words, regarding the vertical sectional area in the longitudinal direction, the seal portion 21 has a smaller sectional area at the joint surface 23 and one end portion close to the joint surface 23, and has a larger sectional area at a portion distant from the joint surface 23, that is, the other end region on the ear portion 22 side.

The longitudinal dimension of the slit 33 is not particularly limited, and extends from one end to the other end of the sealing portion 21 in the present embodiment. As an embodiment not shown, the slits 33 may be intermittently arranged along the longitudinal direction of the sealing portion 21.

According to the present embodiment, the weather strip 10 includes the tail portion 17 as a mold forming portion, the tail portion 17 includes the base portion 24 mounted and fixed on the mount face 104, and the main seal portion 25 protruding from the base portion 24 and elastically contacting the door 102, the base portion 24 having: a first protrusion 28 provided on one side of the seal portion 21 in the width direction, extending in the longitudinal direction of the seal portion 21, and elastically contacting the mount surface 104; a base surface 26 formed between one side and the other side in the width direction of the sealing portion 21, facing or contacting the mount surface 104; and a bottomed first groove portion 31 formed between the first protrusion 28 and the base surface 26 and extending from the joint surface 23 to the other end.

The first groove 31 corresponds to a projection provided on the die, and the tail 17 is hollowed out from the outside of the base surface 26 at the junction with the section 16. Thus, when the high-pressure uncured material is injected into the inside of the mold of the tail portion 17, the pressure of the uncured material is weakened in the vicinity of the first groove portion 31, thereby preventing the dislocation of the section 16 placed at the joint surface 23.

In addition, according to the present embodiment, since the base portion 24 of the weather strip 10 further has the bottomed second groove portion 32 formed between the second protrusion 29 and the base surface 26 and extending from the joint surface 23 to the other end, the tail portion 17 is hollowed out further from the outside of the base surface 26 at the joint with the section 16. Thus, when the high-pressure uncured material is injected into the die of the tail portion 17, the pressure of the uncured material is reduced in the vicinity of the second groove portion 32, and the displacement of the section 16 placed on the joint surface 23 is further prevented.

The embodiments of the present utility model have been described above with reference to the drawings, but the present utility model is not limited to the embodiments shown in the drawings. Various modifications and variations may be added to the embodiments shown in the drawings within the same or equivalent scope of the utility model. The

groove portions

31 and 32 of the present utility model may be provided at one end of the tail portion 11 (die-formed portion) joined to the section 12 (extrusion-formed portion) as a modification not shown, or may be provided at one end and/or the other end of the corner portion 13 (die-formed portion) joined to the sections 12 and 14 (extrusion-formed portion) as a modification not shown, in addition to the one end of the tail portion 17 (die-formed portion) joined to the end of the section 16 (extrusion-formed portion) as in the above embodiment. The same applies to the corner 15 (mold forming section).

The utility model can be advantageously used in vehicles.

Claims

1. A weather strip which extends along and seals a gap between an automobile body and an automobile door, the weather strip comprising a die-formed portion having one end and the other end, at which end it is joined with an extrusion-formed portion, wherein,

the mold forming section includes: a base part which is installed and fixed on an installation seat surface arranged on any one of the automobile body and the automobile door; and a main seal portion protruding from the base portion and elastically contacting the other of the vehicle body and the vehicle door,

the base portion has a protrusion portion provided on one side in a width direction of the mold forming portion, extending in a length direction of the mold forming portion and elastically contacting the mount face, a base surface formed between one side and the other side in the width direction of the mold forming portion, facing or contacting the mount face, and a bottomed groove portion formed between the protrusion portion and the base surface, extending from the one end to the other end.

2. The sealing strip according to claim 1, wherein,

the base also has: a second protrusion provided on the other side of the mold forming portion in the width direction, extending along the length direction of the mold forming portion, and elastically contacting the mount surface; and a second groove portion having a bottom, formed between the second protrusion and the base surface, and extending from the one end to the other end.

3. The sealing strip according to claim 1, wherein,

the automobile door is a sliding door that moves forward and backward in the front-rear direction of the automobile.

4. The sealing strip according to claim 1, wherein,

the base surface is formed with a slit extending in the longitudinal direction of the mold forming portion and connected to the inner space of the weather strip.

5. The sealing strip according to claim 1, wherein,

the die forming part is the tail part of the sealing strip.