JP2001206165A - Weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather strip capable of suppressing a transmission sound transmitted from the outside of a cabin to the inside thereof without increasing the number of partition wall parts. SOLUTION: This weather strip 1 comprises a mounting base part 2 installed at the opening edge of a door and a hollow seal part 3 formed integrally with the mounting base part 2 and coming in contact elastically with the door D when the door D is closed so as to seal the inside from the outside of the cabin. The cross section of the hollow seal part 3 is divided into two parts through a partition wall part 25 bent and formed integrally with the hollow seal part 3. When the door D is closed, the partition wall part 25 is bent further, and the top part P of the curve comes in contact with an inner wall surface forming the hollow seal part 3 so as to divide the cross section of the hollow seal part 3 into three parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip which is attached to a door opening edge or a door outer peripheral edge of a vehicle body of an automobile and elastically contacts a door or a body panel when the door is closed to seal the inside and outside of the vehicle interior.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a flange F provided on, for example, a door opening edge of an automobile body is elastically contacted with a mounting base 2 and an outer peripheral edge of the door D when the door D is closed. A weather strip 1 is integrally mounted with a hollow seal portion 3 for sealing the inside and outside of the vehicle interior. The mounting base 2 of the weather strip 1 has a substantially U-shaped cross section, and lip portions 7 to 10 for holding the flange F are formed inside the side walls 4 and 5 forming a substantially U shape. A substantially U-shaped core material 11 is embedded in the mounting base 2 along the side walls 4 and 5 to improve the rigidity of the mounting base 2. Further, an interior lip portion 12 is provided on the vehicle interior side of the mounting base 2.

In such a weather strip 1, there is a weather strip 1 in which a hollow seal portion 3 is divided into two by a partition wall portion 15. According to this, it is possible to effectively suppress transmitted sound such as vibration transmitted from the outside of the vehicle compartment to the inside of the vehicle compartment during traveling, rather than simply increasing the thickness of the inner wall constituting the hollow seal portion 3.

[0004]

In order to further suppress the transmitted sound described above, the number of hollows formed in the hollow seal portion 3 is increased by increasing the number of partition walls 16 as shown in FIG. Then, 3) can be considered.

However, since the partition walls 15 and 16 are integrally extruded together with the hollow seal portion 3, increasing the number of partition walls increases the difficulty of manufacturing, and reduces the yield during manufacturing. Will be reduced. In addition, when the number of partition portions is increased, the compression load of the hollow seal portion 3 is increased as compared with the case where the number of the partition portions is not increased, so that a problem that the door D closing property is deteriorated occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a weather strip which suppresses transmitted sound transmitted from the outside of the vehicle compartment to the interior of the vehicle compartment without increasing the number of partition walls.

[0007]

In order to achieve the above object, the invention according to claim 1 comprises a mounting base (2) mounted on a door opening edge or a door outer peripheral edge of a vehicle body, and a mounting base (2). A hollow seal portion (3) integrally formed with the door (D) to resiliently contact the door (D) or the body panel when the door (D) is closed to seal the inside and outside of the vehicle compartment, and the partition wall portion integrally formed with the hollow seal portion (3). (25) The weatherstrip (1) in which the cross section of the hollow seal portion (3) is divided into two sections, wherein the partition wall (25) is an inner wall surface constituting the hollow seal portion (3) when the door (D) is closed. Is forcibly curved to touch the
The cross section of the hollow seal part (3) is divided into three or more parts.

According to a second aspect of the present invention, there is provided a mounting base (2) mounted on a door opening edge or a door outer peripheral edge of a vehicle body.
And a hollow seal portion (3) integrally formed with the mounting base (2) and elastically contacting the door (D) or the body panel when the door (D) is closed to seal the inside and outside of the vehicle interior.
A weatherstrip (1) having a cross section of a hollow seal part (3) divided into two parts by a curved partition part (35) integrally formed with the partition part (35), and when the door (D) is closed, the partition part (35)
Is further curved, and the apex (P) of the curve contacts the inner wall surface forming the hollow seal portion (3), and the cross section of the hollow seal portion (3) is divided into three or more.

Further, according to a third aspect of the present invention, the first protrusion (46) is provided at a vertex (P) of the curved portion where the partition wall portion (45) is curved. Has a second projection (48) provided on the inner wall surface of the hollow seal portion (3) with which the partition wall (45) comes into contact.

The symbols in parentheses above correspond to the symbols described in the drawings and the embodiments of the invention described later.

According to the first and second aspects of the present invention, the cross section of the hollow seal is divided into two when the door is opened by the partition, but the partition is formed on the inner wall surface of the hollow seal when the door is closed. It is divided into three or more by contact. Thus, when the door is closed, the number of hollows increases, so that the transmitted sound from the outside of the vehicle compartment to the interior of the vehicle compartment is further reduced. In addition, since the hollow seal portion is simply divided into two parts by the partition during extrusion molding of the weather strip, the production yield is not significantly reduced. In addition, when the door is closed, the hollow seal portion is divided into three or more parts. However, since the door is in the state of being divided into two parts from when the door is opened to when the door is closed, the compressive load increases and the door closeability may not be deteriorated. Somewhat resolved. In the second embodiment, the partition wall is formed integrally with the hollow seal portion in a curved state when the door is opened. However, as shown in the first embodiment, the partition wall is bent only when stress due to elastic contact is applied when the door is closed. You may do so.

According to the third or fourth aspect of the present invention, the first portion provided at the vertex of the curved portion of the partition wall.
The second protrusion provided on the inner wall surface of the protrusion or the hollow seal facilitates making the cross section of the hollow seal into three or more divisions. There is no need to set a larger value than in the case where there is no second protrusion.

[0013]

Embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals. (First Embodiment) FIG. 1 is a cross-sectional view showing a weather strip according to a first embodiment of the present invention. FIG. 1A shows a state when a door is opened, and FIG. Indicates the state of time.

The weather strip 1 according to the first embodiment of the present invention includes a flange F provided on a door opening edge of a vehicle body.
A mounting base 2 having a substantially U-shaped cross section inserted and mounted on
And a hollow seal portion formed integrally with the mounting base and elastically contacting the outer peripheral edge of the door when the door is closed to seal the inside and outside of the vehicle compartment. Lips 7 to 10 for holding the flange F are formed inside the side walls 4 and 5 of the mounting base 2,
A substantially U-shaped core material 11 is embedded in the mounting base 2 along both side walls 4 and 5. Further, an interior lip portion 12 is provided on the vehicle interior side of the mounting base 2. In addition, a partition 25 that divides the cross section of the hollow seal 3 into two is integrally formed with the hollow seal 3.

The partition 25 is curved in a substantially rectangular shape in cross section. When the door D is closed, as shown in FIG. 1 (b), a curved apex P is formed on the inner wall surface of the hollow seal portion 3. It is forcibly bent to make contact. That is, the degree of curvature of the partition wall portion 25 is set such that the top portion P of the curvature comes into contact with a predetermined position of the inner wall surface of the hollow seal portion 3 by the elastic contact of the door D. as a result,
The cross section of the hollow seal portion 3 is usually the partition portion 2 when the door D is opened.
5 is divided into two, but when the door D is closed, it is divided into three.

Since the number of hollows increases in this way, the sound transmitted from the outside of the vehicle compartment to the interior of the vehicle compartment is further reduced. Moreover,
Since the hollow seal portion 3 is only divided into two by the partition wall portion 25 at the time of the extrusion molding of the weather strip 1, the production yield is not significantly reduced. When the door D is closed, the hollow seal portion 3 is divided into three parts. However, when the door D is closed from the opened state to the closed state, the hollow seal part 3 is divided into two parts.
The increase in the compression load and the deterioration of the door D closing performance are somewhat eliminated.

The partition 25 is normally formed integrally with the hollow seal portion 3 in a state of being bent in a substantially rectangular cross section when the door D is opened. However, the partition 25 is usually not particularly curved when the door D is opened. It is also possible to bend only when stress due to elastic contact is applied when the door D is closed.

(Second Embodiment) Next, a weather strip according to a second embodiment of the present invention will be described with reference to FIG. The difference from the first embodiment is that the partition wall portion 35 integrally formed with the hollow seal portion 3 is curved into a substantially S-shaped cross section, and when the door D is closed, its apexes P1 and P2 constitute the hollow seal portion 3. This is a point where two portions on the inner wall surface are brought into contact. The same parts as those in the first embodiment are denoted by the same reference numerals.

According to this, the cross section of the hollow seal portion 3 is 2
Since the division is made into four when the door D is closed, the transmitted sound is further reduced as compared with the case of three divisions as in the first embodiment. Moreover, the yield and the compression load at the time of manufacturing are almost the same as those of the first embodiment.

(Third Embodiment) Next, a weather strip according to a third embodiment of the present invention will be described with reference to FIG. The difference from the first embodiment is that a first projection 46 is provided by integral molding at a vertex P of a curved portion of a partition wall 45 having a substantially rectangular cross section integrally molded with the hollow seal portion 3, and when the door D is closed, The point is that the first projection 46 is brought into contact with the inner wall surface constituting the hollow seal portion 3. The same parts as those in the first embodiment are denoted by the same reference numerals. According to this, it is not necessary to set the degree of curvature of the partition 45 as large as that of the partition 25 of the first embodiment.

(Fourth Embodiment) Next, a weather strip according to a fourth embodiment of the present invention will be described with reference to FIG. What is different from the first embodiment is that a second protrusion is provided at a position on the inner wall surface of the hollow seal portion 3 where the apex P of the curve of the partition 45 having a substantially rectangular cross section integrally formed with the hollow seal portion 3 comes into contact. 48 is provided by integral molding, and when the door D is closed, the apex P of the curvature of the partition wall portion 45 is brought into contact with the second projection 48. The same parts as those in the first embodiment are denoted by the same reference numerals. According to this, similarly to the third embodiment, it is not necessary to set the degree of curvature of the partition 45 to be as large as that of the partition 25 of the first embodiment. The first protrusion 46 shown in the third embodiment and the second protrusion 48 shown in the fourth embodiment can be combined.

In the embodiment of the present invention described above,
The weather strip 1 is attached to the door opening edge of the vehicle body, and when the door D is closed, the hollow seal portion 3 is elastically contacted with the door D. On the contrary, the weather strip 1 is attached to the outer peripheral edge of the door D, and when the door D is closed, The hollow seal portion 3 may be elastically contacted with the body panel.

[0023]

As described above, according to the first and second aspects of the present invention, when the door is closed by the partition, the number of hollows increases, so that the transmitted sound from the outside of the cabin to the inside of the cabin is increased. It is reduced. In addition, since the hollow seal portion is simply divided into two parts by the partition during extrusion molding of the weather strip, the production yield is not significantly reduced. In addition, when the door is closed, the hollow seal portion is divided into three or more parts. However, since the door is in the state of being divided into two parts from when the door is opened to when the door is closed, the compressive load increases and the door closeability may not be deteriorated. Somewhat resolved.

According to the third or fourth aspect of the present invention, the first portion provided at the apex of the curvature of the partition wall portion.
The cross section of the hollow seal portion can be easily divided into three or more by the second protrusion portion provided on the inner wall surface of the protrusion portion or the hollow seal portion.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 5 showing a weather strip according to a first embodiment of the present invention, wherein (a) shows a state when a door is opened, and (b) shows a state when a door is closed.

FIG. 2 is a sectional view taken along line AA of FIG. 5 showing a weather strip according to a second embodiment of the present invention, wherein (a) shows a state when the door is opened, and (b) shows a state when the door is closed.

FIG. 3 is a sectional view taken along line AA of FIG. 5, showing a weather strip according to a third embodiment of the present invention, wherein (a) shows a state when the door is opened, and (b) shows a state when the door is closed.

FIG. 4 is a sectional view taken along line AA of FIG. 5 showing a weather strip according to a fourth embodiment of the present invention, wherein (a) shows a state when the door is opened, and (b) shows a state when the door is closed.

FIG. 5 is an external side view of the automobile.

FIG. 6 is a sectional view taken along the line AA of FIG. 5, showing a weather strip according to a conventional example, wherein (a) shows a state when the door is opened, and (b) shows a state when the door is closed.

FIG. 7 is a sectional view taken along the line AA of FIG. 5 showing another weather strip according to the conventional example, where (a) is when the door is opened, and (b) is
Indicates a state when the door is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weather strip 2 Mounting base 3 Hollow seal part 4,5 Side wall 7-10 Lip part 11 Core material 12 Interior lip part 15,16 Partition part 25,35,45 Partition part 46 First projection part 48 Second projection part D door F Flange P, P1, P2 Top

Claims (4)

[Claims] 1. A mounting base which is attached to a door opening edge or a door outer peripheral edge of a vehicle body, and a hollow seal portion which is integrally formed with the mounting base and elastically contacts a door or a body panel when the door is closed to seal the inside and outside of the vehicle interior. A weatherstrip, wherein a cross section of the hollow seal portion is divided into two by a partition portion integrally formed with the hollow seal portion, wherein the partition portion contacts an inner wall surface forming the hollow seal portion when the door is closed. A weather strip which is forcibly bent and divides a cross section of a hollow seal portion into three or more. 2. A mounting base attached to a door opening edge or a door outer peripheral edge of a vehicle body, and a hollow seal portion formed integrally with the mounting base and elastically contacting the door or body panel when the door is closed to seal the inside and outside of the vehicle interior. A weatherstrip, wherein the cross section of the hollow seal portion is divided into two by a curved partition portion integrally formed with the hollow seal portion, and when the door is closed, the partition portion is further curved, and a vertex of the curve is the hollow portion. Contact the inner wall surface that constitutes the seal part,
A weather strip, wherein the cross section of the hollow seal portion is divided into three or more. 3. The weatherstrip according to claim 2, wherein a first projection is provided at a vertex of the curve at which the partition wall is curved. 4. The weatherstrip according to claim 2, wherein a second protrusion is provided on a portion of an inner wall surface of the hollow seal portion with which the partition portion contacts.