JP4758237B2 - Glass run for automobile - Google Patents

Description

  The present invention relates to a glass run for an automobile that is fitted to a door sash of an automobile and guides a door glass that moves up and down.

Conventionally, as shown in FIG. 7, a glass run 100 is fitted to a door sash 400 of a front door 200 and a rear door 300 of an automobile to guide a door glass 9 that moves up and down. FIG. 8 is a front view showing the glass run 100 attached to the front door 200.
As shown in FIG. 8, the glass run 100 connects the upper ends of the front-side vertical side portion 11 and the rear-side vertical side portion 12 that extend upward from the inside of the door panel 200 a of the front door 200, and the two vertical side portions 11, 12. It is comprised from the horizontal side part 13 to do. The vertical side parts 11 and 12 and the horizontal side part 13 are formed by extrusion molding, and the vertical side parts 11 and 12 and the horizontal side part 13 are connected via two mold forming parts 14 and 15. .

Next, a cross-sectional structure of the lateral side portion 13 of the glass run 100 will be described with reference to FIG. 9 which is an AA enlarged cross-sectional view of FIG. The cross-sectional structure of the vertical side portions 11 and 12 is the same as the cross-sectional structure of the horizontal side portion 13.
The glass run 100 is fitted to a door sash 400 of an automobile, and guides the door glass 9 that moves up and down to the groove 40. The groove portion 40 has a substantially U-shaped cross section and is formed by the bottom wall portion 1 and the vehicle outer side wall portion 2 and the vehicle inner side wall portion 3 extending from both ends of the bottom wall portion 1. Further, an outer lip 4 that is bent inwardly toward the groove portion 40 is provided from the vehicle outer side wall portion 2, and an inner lip 5 that is bent inwardly toward the groove portion 40 is provided from the vehicle inner wall portion 3. ing. The outer lip 4 and the inner lip 5 are in sliding contact with the door glass 9.
In this way, the glass run 100 functions to prevent water from entering and sound from entering, and to prevent the door glass 9 from fluttering.

By the way, in such a glass run for automobiles, proposals have been made to improve the sound insulation function and the vibration absorption function during traveling and to effectively prevent the generation of abnormal noise when the door glass is raised and lowered.
For example, in the invention described in Patent Document 1, a glass guide and a sub lip are provided on the vehicle outer wall portion and the vehicle inner wall portion to prevent the door glass from rattling when the door glass is raised and lowered. .
In addition, the invention described in Patent Document 2 describes a configuration in which a high-foam sponge is provided on the vehicle outer wall and the vehicle inner wall so as to prevent the generation of abnormal noise when the door glass is raised and lowered. .
JP 2000-280755 A JP 2001-130265 A

However, in the conventional glass run 100 as shown in FIGS. 8 and 9, the sound from the inside of the door panel 200a passes through the front vertical side 11 and the rear vertical side 12 of the glass run 100, and the arrow B in FIG. And there was a problem that it was transmitted in the direction of arrow C and entered into the passenger compartment. In particular, due to the demand for a flash surface, when the space between the vehicle interior side wall portion 3 and the inner lip 5 is formed so that the door glass 9 is located on the vehicle exterior side, sound is easily transmitted and the influence is great.
Further, there is a problem that sound travels from the contact portion between the glass run 100 and the door glass 9 into the vehicle compartment along the route indicated by the arrow D in FIG. In addition, when driving on rough roads, there is a problem that rattle noise (unusual noise generated when the window glass is poorly built and shakes by vibrations from front to back and from side to side and collides with other parts).

  On the other hand, the invention described in Patent Document 1 prevents rattling of the door glass when the door glass is raised and lowered, and the invention described in Patent Document 2 is an abnormal sound when the door glass is raised and lowered. Since both are corresponding, it is not possible to effectively prevent the sound from entering the passenger compartment, especially the sound when the door glass is closed.

  Accordingly, the present invention is to solve the above-described conventional problems, and provides an automotive glass run that can effectively reduce the intrusion of sound from the outside of the vehicle or the inside of the door panel.

In order to solve the above-mentioned conventional problems, the automotive glass run of the invention according to claim 1 is a vehicle outer wall portion (2) that forms a substantially U-shaped groove portion (40) that guides the door glass (9). And an outer lip (1), an inner wall (3), an outer wall (2), an inner wall (3), and an inner lip slidably in contact with the door glass (9). 4) and an inner lip (5), and the two vertical sides (11, 12) extending upward from the inside of the door panel (200a) are connected to the upper ends of the two vertical sides (11, 12). In an automotive glass run (10) comprising a lateral side portion (13), the vehicle interior side wall portion (over the entire length of at least one of the two longitudinal side portions (11, 12) and the entire length of the lateral side portion (13) ( 3) Soundproof material (16) on the surface facing the inner lip (5) The soundproofing material (16) extends to the base of the inner lip (5) and further extends to the bottom wall (1) side to reach the bottom wall (1). The portion located between the tip of the inner lip and the bottom wall portion is in contact with the inside of the door glass when guiding the door glass (9), and the door glass (9) The gap formed by the bottom wall portion (1), the vehicle interior side wall portion (3), and the inner lip (5) is filled with the soundproof material (16), and the soundproof material (16 ) Is a highly foamed sponge material having a specific gravity of 0.1 to 0.4 .

  The symbols in parentheses indicate the best mode for carrying out the invention and the corresponding elements or the corresponding matters described in the drawings.

According to the first aspect of the present invention, since the groove portion having a U-shaped cross section is formed by the vehicle outer wall portion, the bottom wall portion, and the vehicle inner wall portion, the door glass can be guided to the groove portion. Further, since an outer lip and an inner lip extending inwardly from the outer side wall portion and the inner side wall portion of the vehicle are formed, the outer lip and the inner lip are slidably contacted with the door glass guided by the groove portion and sealed. be able to.
The glass run is composed of two vertical sides extending upward from the inside of the door panel and a horizontal side connecting the upper ends of the two vertical sides, and at least one full length of the two vertical sides. Since the soundproofing material is provided on the surface facing the inner lip of the inner wall of the vehicle, the sound that enters from the inside of the door panel through the vertical side and the contact portion between the glass run and the door glass enters from the outside of the vehicle. The sound to be played can be effectively reduced by the soundproofing material.

Also, since the soundproofing material is provided on the surface of the inner wall of the glass run that faces the inner lip across the entire length of the lateral side of the glass run, the lateral side also travels from the outside of the vehicle through the contact portion between the glass run and the door glass. The sound that enters can be effectively reduced by the soundproofing material.
The soundproofing material extends to the base of the inner lip, and further extends to the bottom wall so as to reach the bottom wall . When the door glass guides the door glass, it is in contact with the inside of the door glass, and the gap formed by the door glass, the bottom wall portion, the vehicle inner wall portion, and the inner lip is completely filled with the soundproofing material. Therefore, the passage of the sound entering from the outside of the vehicle through the contact portion between the glass run and the door glass is surely blocked, and the passage of the sound entering from the inside of the door panel through the vertical side portion is further narrowed so that the sound enters. Can be reduced.

Moreover, according to this invention, since a soundproof material is a highly foamed sponge material with a specific gravity of 0.1-0.4, the sound which approachs can be absorbed and the reduction effect can be improved.

(Reference Embodiment 1)
Next, with reference to FIG.1 and FIG.8, the glass run for motor vehicles based on the reference Embodiment 1 of this invention is demonstrated.
As in the conventional example shown in FIG. 8, the glass run 10 according to the reference embodiment 1 includes a front side vertical side portion 11 and a rear side vertical side portion 12 that extend upward from the inside of the door panel 200 a of the front door 200, and two vertical lengths. It is comprised from the horizontal side part 13 which connects the upper end of the side parts 11 and 12. FIG. The vertical side parts 11 and 12 and the horizontal side part 13 are formed by extrusion molding, and the vertical side parts 11 and 12 and the horizontal side part 13 are connected via two mold forming parts 14 and 15. .
FIG. 1 is a cross-sectional view showing a glass run 10 according to Reference Embodiment 1, and corresponds to an AA enlarged cross-sectional view of FIG. FIG. 1A shows the state before door glass guidance, and FIG. 1B shows the state during door glass guidance. The cross-sectional structure of the vertical side portions 11 and 12 is the same as the cross-sectional structure of the horizontal side portion 13.

  The glass run 10 is fitted to a door sash 400 of an automobile, and guides the door glass 9 that moves up and down to the groove 40. The groove portion 40 has a substantially U-shaped cross section and is formed by the bottom wall portion 1 and the vehicle outer side wall portion 2 and the vehicle inner side wall portion 3 extending from both ends of the bottom wall portion 1. Further, an outer lip 4 that is bent inwardly toward the groove portion 40 is provided from the vehicle outer side wall portion 2, and an inner lip 5 that is bent inwardly toward the groove portion 40 is provided from the vehicle inner wall portion 3. ing. The outer lip 4 and the inner lip 5 are in sliding contact with the door glass 9.

Before the door glass guide (a), the tips of the outer lip 4 and the inner lip 5 are in contact with each other. When the door glass is guided (b), the outer lip 4 is pressed against the vehicle outer wall 2 side and the inner lip 5 is pressed against the vehicle inner wall 3 as the door glass 9 enters. The outer lip 4 and the inner lip 5 sandwich the door glass 9.
In FIG. 1, the door glass 9 is disposed on the vehicle outer side than the center of the groove portion 40 in order to make the flash surface, and therefore, the vehicle inner wall portion 3 rather than the space between the vehicle outer wall portion 2 and the outer lip 4. And the inner lip 5 are formed so that the distance between them is wider.

A soundproof material 6 is provided on the surface of the vehicle interior side wall 3 that faces the inner lip 5.
Although the material of the soundproof material 6 is not specifically limited, For example, rubber | gum, resin, and a fiber can be used. Preferably, the material has a specific gravity of 0.03 to 1.5, more preferably a highly foamed sponge material of rubber or resin having a specific gravity of 0.1 to 0.4, and has a sound absorbing performance.
Moreover, although the soundproofing material 6 can be provided by integrally molding with the main body of the glass run 10, or sticking after a main body shaping | molding, it is preferable to set it as integral molding from efficiency improvement of a manufacturing process.
In the state before door glass guidance shown in FIG. 1A, the inner lip 5 and the soundproof material 6 are not in contact with each other.

Next, as shown in FIG. 1 (b), in the state where the door glass 9 is guided into the groove portion 40, the inner lip 5 is pressed by the door glass 9 toward the vehicle interior side wall portion 3, so as to contact the soundproof material 6. It comes to touch. At this time, it is preferable that the inner lip 5 and the soundproof material 6 are brought into contact with each other over a wide range by forming a contact surface of the soundproof material 6 with the inner lip 5 according to the shape of the inner lip 5.
Further, the soundproof material 6 needs to be thick enough to contact the inner lip 5 when the door glass 9 is guided, but the thickness is adjusted so as not to increase the pressure of the inner lip 5 against the door glass 9 suddenly. Good.
As shown in FIG. 1B, a gap remains between the inner wall portion 3 and the inner lip 5 at the root portion of the inner lip 5 (the portion where the inner wall portion 3 and the inner lip 5 are joined). Thus, the bending of the inner lip 5 when the door glass 9 is guided is not affected.

The soundproof material 6 may be provided on the entire length of at least one of the two vertical side portions 11 and 12 with respect to the total length of the glass run 10 shown in FIG. 8, but the front side vertical side portion 11 and the rear side vertical side portion. 12 is preferably provided over the entire length of both sides 12, and is also preferably provided over the entire length of the lateral side portion 13.
In the reference embodiment, the upper ends of the vertical side portions 11 and 12 and the horizontal side portion 13 are connected via the two mold forming portions 14 and 15. More preferably, the soundproofing material 6 is formed over the entire length of the glass run 10 by providing the same soundproofing material 6 on the vehicle interior side wall 3.

According to the glass run 10 according to the reference embodiment 1, the groove portion 40 having a U-shaped cross section is formed by the vehicle outer side wall portion 2, the bottom wall portion 1, and the vehicle inner side wall portion 3. Therefore, the door glass 9 is attached to the groove portion 40. I can guide you. Further, an outer lip 4 and an inner lip 5 that are bent inward from the vehicle outer wall 2 and the vehicle inner wall 3 are formed, so that the door glass guided by the groove 40 through the outer lip 4 and the inner lip 5 is formed. 9 can be slidably contacted and sealed.
The glass run 10 includes two vertical sides 11 and 12 extending upward from the inside of the door panel 200a, and a horizontal side 13 connecting the upper ends of the two vertical sides 11 and 12. Since the soundproofing material 6 is provided on the surface of the vehicle interior side wall portion 3 facing the inner lip 5 over the entire length of at least one of the vertical side portions 11 and 12, it enters from the door panel 200 a through the vertical side portions 11 and 12. The soundproofing material 6 can effectively reduce the sound that enters and the sound that enters from the outside of the vehicle through the contact portion between the glass run 10 and the door glass 9.

  In addition to the vertical sides 11 and 12 of the glass run 10, the soundproof material 6 is provided on the surface facing the inner lip 5 of the inner side wall 3 over the entire length of the horizontal side 13. The sound entering from the outside of the vehicle through the contact portion between the glass run 10 and the door glass 9 can be effectively reduced by the soundproofing material 6.

  Further, when the door glass 9 is guided, the inner lip 5 and the soundproofing material 6 are in contact with each other. Therefore, it is possible to narrow the path of the sound that enters through the vertical sides 11 and 12, and to reduce the sound entry more effectively.

  Moreover, by forming the soundproof material 6 with a high foamed sponge material having a specific gravity of 0.1 to 0.4, it is possible to absorb the sound entering and improve the reduction effect.

FIG. 2 to FIG. 4 show the test results of the glass run 10 according to the reference embodiment 1.
In the present reference example, as glass run 10, EPDM sponge rubber using a front-side vertical side portion 11 of the soundproofing material 6 specific gravity 0.25 to sound insulation 6 shown in FIG. 1, the rear vertical side portion 12, horizontal What was provided in the full length of the side part 13, ie, the glass run whole periphery except the shaping | molding parts 14 and 15, was used. And the comparison with the prior art example which does not provide the soundproof material 6 was performed.

(1) Door component test (static evaluation)
In our anechoic chamber, the anechoic chamber (inside the car) side and the reverberation room (outside the car) side were used, and the measurement was performed under the following conditions.
Measurement frequency: 100 [Hz] to 10000 [Hz] (1/3 octave width)
・ Reverberation room sound pressure: 90 [dB] uniform in the reverberation room (100 [Hz] to 10000 [Hz])
・ Sound pressure level sampling condition: Average sound pressure for 30 seconds

FIG. 2 shows the frequency and S.I. at the measurement point corresponding to the driver's seat ear position measured under the above measurement conditions. P. L. It is a graph which shows the relationship of (Sound Pressure Level: Sound pressure level). As a measurement point corresponding to the driver's seat ear position, a microphone was installed at a position 300 mm away from the door glass.
As shown in the graph of FIG. 2, in this reference example, an approach sound reduction effect was obtained as compared with the conventional example. The reduction value compared to the conventional example was 0.6 dB in the overall value in the 1 kHz to 4 kHz band and 1.0 dB in the specific frequency bands of 1 kHz and 4 kHz.

FIG. 3 shows the frequency and S.I. at the proximity sound measurement point measured under the above measurement conditions. P. L. It is a graph which shows the relationship. As the proximity measurement points, the microphone was moved at a position 20 mm away from the door glass for each of the pillar portion (corresponding to the rear side vertical side portion 12) and the roof portion (corresponding to the horizontal side portion 13).
As shown in the graph of FIG. 3, in this reference example, the effect of reducing the approaching sound was obtained as compared with the conventional example. The reduction value compared with the conventional example was 1.8 dB in the overall value in the 1 kHz to 4 kHz band in the pillar portion, and 1.0 dB in the overall value in the 1 kHz to 4 kHz band in the roof portion.

(2) Actual vehicle noise test (dynamic evaluation)
The measurement was performed under the following measurement conditions.
・ Measurement location: Oita Autopolis ・ Measurement frequency: 100 [Hz] to 10000 [Hz] (1/3 octave width)
・ Running mode: 120km / h (constant speed)
・ Sound pressure level sampling condition: Average sound pressure for 10 seconds

FIG. 4 shows the frequency and S.I. at the driver seat ear position measurement point measured under the above measurement conditions. P. L. It is a graph which shows the relationship. S. P. L. Shows the result of measurement using the A characteristic (frequency correction circuit).
As shown in the graph of FIG. 4, in this reference example, an approach sound reduction effect was obtained as compared with the conventional example. The reduction value compared to the conventional example was 0.7 dB in the overall value in the 1 kHz to 4 kHz band and 1.5 dB in the specific frequency bands of 2.5 kHz and 4 kHz.

(Reference embodiment 2)
Next, with reference to FIG. 5, the automotive glass run according to a reference embodiment 2 of the present invention. FIG. 5 is a cross-sectional view showing the glass run 20 according to the reference embodiment 2, and shows a state when the door glass 9 is guided.
The glass run 20 has substantially the same configuration as the glass run 10 according to the reference embodiment 1, but the shape and size of the soundproof material are different.

The soundproof material 7 of the glass run 20 is larger than the soundproof material 6 of the glass run 10, and extends to the root portion of the inner lip 5 (joint portion between the vehicle interior side wall portion 3 and the inner lip 5).
When the door glass 9 is guided, the gap between the vehicle interior side wall 3 and the inner lip 5 is completely closed (without a gap) by the soundproofing material 7 from the tip of the inner lip 5 to the root portion. Yes.

According to the glass run 20 according to the reference embodiment 2, when the door glass 9 is guided, the gap between the vehicle interior side wall portion 3 and the inner lip 5 is completely closed by the soundproofing material 7. The path of sound entering through the contact portion between the door 20 and the door glass 9 is reliably blocked, and the path of sound entering from the inside of the door panel 200a through the vertical sides 11 and 12 is further narrowed, so that the sound enters. Can be reduced.

(Reference Embodiment 3)
Next, referring to FIG. 6, it will be described automotive glass run according to the reference embodiment 3 of the present invention. FIG. 6 is a cross-sectional view showing the glass run 30 according to the reference embodiment 3, and shows a state when the door glass 9 is guided.
The glass run 30 has substantially the same configuration as the glass run 10 according to the reference embodiment 1, but the shape and size of the soundproof material are different.

  The soundproof material 8 of the glass run 30 is smaller than the soundproof material 6 of the glass run 10, and the inner lip 5 and the soundproof material 8 are not in contact with each other when the door glass 9 is guided. A gap is maintained between the soundproofing materials 8.

According to the glass run 30 according to the reference embodiment 3, since the inner lip 5 and the soundproof material 8 do not come into contact with each other when the door glass 9 is guided, the pressure of the inner lip 5 against the door glass 9 does not increase rapidly, It can slide smoothly.

(Embodiment)
Next, with reference to FIG. 10, the glass run for motor vehicles which concerns on embodiment of this invention is demonstrated. FIG. 10 is a cross-sectional view showing the glass run 50 according to the embodiment , and shows a state when the door glass 9 is guided.
The glass run 50 is obtained by further extending the soundproof material 7 in the glass run 20 according to the reference embodiment 2 to the bottom wall 1 side.

The soundproof material 16 of the glass run 50 is extended to the root portion of the inner lip 5 (joint portion between the vehicle interior side wall portion 3 and the inner lip 5), as well as the soundproof material 7 of the glass run 20, and further, the bottom wall portion 1. It also extends to the side and reaches the bottom wall 1.
When the door glass 9 is guided, the gap formed by the door glass 9, the bottom wall portion 1, the vehicle interior side wall portion 3, and the inner lip 5 is filled with the soundproof material 16.
In other words, when the door glass 9 is guided, the space between the vehicle interior side wall 3 and the door glass 9 is completely closed by the soundproof material 16 and the inner lip 5.

According to the glass run 50 according to the embodiment , the space between the vehicle interior side wall 3 and the door glass 9 is completely closed by the soundproof material 16 and the inner lip 5 when the door glass 9 is guided. The path of sound entering through the abutting portion between the glass run 50 and the door glass 9 is securely blocked, and the path of sound entering from the inside of the door panel 200a through the vertical sides 11 and 12 is further narrowed to reduce the sound. The effect of reducing entry can be improved.

In the reference embodiment 1 to reference embodiment 3 and the embodiment described above, the glass run attached to the front door 200 has been described. However, the embodiment can also be applied to the rear door 300.

It is sectional drawing which shows the glass run which concerns on the reference Embodiment 1 of this invention, (a) shows before door glass guidance, (b) shows the time of door glass guidance. It is a graph which shows the test result by the Example of the glass run which concerns on reference Embodiment 1. FIG. It is a graph which shows the test result by the Example of the glass run which concerns on reference Embodiment 1. FIG. It is a graph which shows the test result by the Example of the glass run which concerns on reference Embodiment 1. FIG. It is sectional drawing which shows the glass run which concerns on reference Embodiment 2. FIG. It is sectional drawing which shows the glass run concerning the reference embodiment 3. It is a side view which shows a vehicle. It is a front view which shows the glass run attached to a front door. It is sectional drawing which shows the glass run which concerns on a prior art example. It is sectional drawing which shows the glass run which concerns on embodiment .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottom wall part 2 Car outer wall part 3 Car inner side wall part 4 Outer lip 5 Inner lip 6 Soundproof material 7 Soundproof material 8 Soundproof material 9 Door glass 10 Glass run 11 Front side vertical part 12 Rear side vertical part 13 Side part 14 Type Molding part 15 Mold molding part 16 Soundproof material 20 Glass run 30 Glass run 40 Groove part 50 Glass run 100 Glass run 200 Front door 300 Rear door 400 Door sash

Claims (1)

A vehicle outer wall portion, a bottom wall portion, a vehicle inner wall portion, a vehicle outer wall portion, and a vehicle inner wall portion that form a groove portion having a substantially U-shaped cross section for guiding the door glass are bent and extended inward from the vehicle outer wall portion and the vehicle inner wall portion, respectively. In an automotive glass run comprising an outer lip and an inner lip that are in sliding contact, two vertical sides extending upward from the inside of the door panel, and a horizontal side connecting the upper ends of the two vertical sides,
Over the entire length of at least one of the two vertical side portions and the entire length of the horizontal side portion, a soundproof material is provided on the surface of the vehicle inner wall portion facing the inner lip,
The soundproof material extends to the base portion of the inner lip, and further extends to the bottom wall portion side so as to reach the bottom wall portion. The tip of the inner lip and the bottom When the door glass is guided , a portion located between the wall portion is in contact with the inside of the door glass and is formed by the door glass, the bottom wall portion, the inner wall portion, and the inner lip. Is filled with the soundproofing material ,
Moreover, the automotive glass run is characterized in that the soundproofing material is a highly foamed sponge material having a specific gravity of 0.1 to 0.4 .

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