JP2002059745A - Vehicle glass run - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle glass run 10 which is certainly positioned at a frame corner part of frame and is not deviated at the time of sliding of door glass. SOLUTION: The vehicle glass run 10 is provided with a horizontal side extrusion molding part 30, a vertical side extrusion molding part 20 and a corner die forming part 40 for connecting ends of these molding parts to an L shape by a die forming. Engagement lips engaged with the frame are projectingly provided on outer sides of the vertical side extrusion molding part 20, a horizontal side extrusion molding part 30 and the corner die forming part 40. A thickness t2 of a mold side base bottom part 42 of the corner die forming part 40 is made thicker than a thickness t1 of vertical side base bottom part 22 of the vertical side extrusion molding part 20 and a horizontal side base bottom part 32 of the horizontal side extrusion molding part 30. A force for engaging the engagement lips with the frame is made larger.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass run for a vehicle which is mounted on a door sash of an automobile or the like.
More specifically, it relates to the structure of the corner portion.

[0002]

2. Description of the Related Art Conventionally, a glass run for a vehicle mounted on a side door of this type is disclosed in, for example,
A technique described in Japanese Patent Application No. -306130 is known. That is, the glass run for a vehicle is formed by extruded portions mounted on the roof side and the pillar side that constitute the frame, and a corner-shaped formed portion that interconnects the extruded portions,
It has. Each extruded part and corner type molded part,
The door glass is formed to have a substantially U-shaped cross section, and the door glass is slid in the sliding groove, and the seal lip is brought into contact with the inner and outer surfaces of the door glass to seal the inside and outside of the vehicle.

[0003] The mounting structure of the glass run for the vehicle to the frame is as follows. That is, the frame is
The vehicle includes a frame body that forms a substantially linear frame on the roof side and the pillar side, and an L-shaped frame corner portion that connects the frame bodies. The frame body and the frame corner have mounting grooves, into which the extruded portion and the corner-shaped formed portion of the glass run are respectively attached. The extruded portion and the corner-shaped formed portion each have an engagement lip on the outside of the main body having a U-shaped cross section, and when the engagement lip is pushed into the mounting groove, it is held by its elastic force.

[0004]

However, the dimensional tolerance of the frame corner is more likely to vary than the substantially straight frame body. For this reason, even in the corner molded portion of the glass run, when the base portion is mounted on the frame corner portion, the base portion may be bent in the width direction to be mounted with the width of the sliding groove narrowed. Then, when an excessive frictional force is generated in the seal lip along with the sliding of the door glass when the door glass is opened and closed, there is a problem that the glass run is displaced.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and a vehicle in which a corner-molded portion is securely positioned at a frame corner of a frame and does not generate a displacement due to sliding of a door glass. It is intended to provide a glass run for use.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problems.
A glass run for a vehicle having a U-shaped frame corner portion, mounted on a frame having a substantially U-shaped cross section, and slidably supporting a door glass, protruding from both sides of the extrusion side base portion and the extrusion side base portion. A pushing side wall portion forming a U-shaped cross section with the pushing side base portion, and a pushing side engagement lip projecting from the outside of the pushing side base portion and engaging with an inner wall of a frame main body; The extrusion-molded portion attached to the main body, and the mold-side base and the mold-side which are continuously connected by molding to the extrusion-side base, the extrusion-side side wall, and each end of the extrusion-side engagement lip of the extrusion-molded portion. And a corner mold formed part attached to the frame corner part, the mold base part having a side wall part and a mold side engagement lip. More mold side engagement Tsu that flops formed larger rigidity in the width direction from the extrusion side base portion so as to increase towards the force engaging the frame corner, characterized by.

In the glass run for a vehicle according to the present invention, an extruded portion and a corner molded portion are attached to a frame main body and a frame corner portion constituting the frame, respectively. The extruded part includes an extruded base, an extruded side wall, and an extruded side engaging lip, and the corner molded part includes a molded side base, a molded side wall, and a molded side engaging lip. And held by the elastic force of the engagement lip. The mold-side base portion in the corner-molded portion according to the present invention has a greater rigidity in the width direction than the extruded-side base portion of the extruded portion, and has a larger force to engage with the frame corner portion. In the frame corner portion where the dimensional tolerance is likely to vary, the desired shape is maintained without bending and narrowing in the width direction. Therefore, the corner-shaped molded part is, for the sliding of the door glass,
There is no excessive frictional force, and there is no displacement when opening and closing the door glass.

In addition, since the corner-molded portion has a large rigidity in the width direction of the mold-side base portion, even when it is press-fitted into the frame, it can maintain its shape and can be positioned firmly.

As a preferred mode of increasing the rigidity of the mold-side base portion in the width direction, a configuration in which the thickness is made larger than that of the extrusion-side base portion can be adopted. According to this aspect, it is possible to easily manufacture the mold by slightly changing the shape of the mold for injection molding.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below.

FIG. 1 is an external view showing an automobile side door SD equipped with a vehicle glass run 10 according to an embodiment of the present invention, and FIG. 2 is an external view showing the vehicle glass run 10. 1 and 2, a vehicle glass run 10 is mounted on the inner periphery of the frame FR of the side door SD. The glass run 10 for a vehicle is mounted on vertical frame portions FRf, FRr (frame body) before and after the frame FR, and is extruded and formed on a vertical side extruded portion 20, 20.
A horizontal extrusion part 30 attached to the upper frame part FRh (frame main body); and vertical frame parts FRf, F
Corner shaped portions 40, 40 attached to L-shaped frame corner portions FRc, FRc between Rr and the upper frame portion FRh. Vertical extrusion part 20,
Reference numeral 20 has a lower portion extending inside the side door SD, and is attached to retainers FRu, FRu respectively extending the vertical frame portions FRf, FRr downward. The corner mold parts 40, 40 are vertically extruded parts 20, 2,
The terminals of the 0 and horizontal extrusion parts 30 are connected by molding. The door glass DG is a glass run 10 for a vehicle.
Thereby, it is supported so as to be able to move up and down while maintaining high sealing properties. That is, the front and rear ends of the door glass DG are supported by the vertical extrusion parts 20, and the upper edge of the door glass DG is supported so as to enter and exit the horizontal extrusion part 30.

FIG. 3 is a sectional view taken along line 3-3 of FIG. Note that the front and rear vertical side extruded portions 20, 20 are formed in the same cross section in the longitudinal direction and have substantially the same configuration before and after the side door SD, and therefore the rear side will be described. In FIG. 3, a vertical extrusion portion 20 includes a vertical base portion 22, vertical side wall portions 24 a and 24 b protruding from both ends of the vertical side base portion 22, and a vertical side wall portion 24.
vertical seal lips 26a, 26b slidably sandwiching the door glass DG, respectively, protruding inward from the tips of the a, 24b, and the vertical base 22 and the vertical side walls 24a, 24b. It has a U-shaped cross section. Also, on the outer side of the vertical side base portion 22, there is a push-side engaging lip 2
8a and 28b are formed respectively. The pushing-side engaging lip 28a is formed so as to engage with the bent portion FRm of the frame FR, and the pushing-side engaging lip 28b is formed so as to engage with the engaging recess FRk of the frame FR. The engagement prevents the vertical extruded part 20 from being displaced from the vertical frame part FRr or falling off. Further, the vertical side wall portions 24a, 24
b are disposed on the vehicle exterior side and the vehicle interior side, respectively, and the vertical side wall part 24a on the vehicle exterior side is replaced with the vertical side wall part 24b on the vehicle interior side.
By forming it lower, the appearance is improved. Further, the vertical side base portion 22 includes a vertical frame portion FRr.
Is formed so as to have a predetermined gap Sp between itself and the bottom surface. The vertical base 22 has the gap Sp because the vertical base 22 is bent toward the bottom surface of the vertical frame portion FRr when the vertical base 22 is pressed against the side edge of the door glass DG. This is to prevent the surface of the vertical base 22 from being locally worn.

FIG. 4 is a sectional view taken along line 4-4 of FIG. As shown in FIG. 4, the horizontal-side extruded portion 30 has the same cross section in the longitudinal direction, and has a horizontal base portion 32.
Horizontal side wall portions 34 a and 34 b protruding from both ends of the horizontal side base portion 32, respectively;
horizontal seal lips 36a, 36b slidably sandwiching the door glass DG, respectively, protruding inward from the distal ends of the horizontal and vertical sides 32a, 34b. And has a U-shaped cross section. Also, on the outside of the horizontal side base portion 32, the pushing side engaging lip 3 is provided.
8a and 38b protrude. Extrusion side engagement lip 38
a is formed so as to engage with the bent portion FRm of the frame FR, and the pushing-side engaging lip 38b is formed so as to engage with the engaging recess FRk of the frame FR. These engagements prevent the horizontal-side extruded portion 30 from being displaced from the upper frame portion FRh or falling off.

The horizontal side walls 34a, 34b are formed lower than the vertical side walls 24a, 24b of the vertical extrusion section 20 in FIG. 2 to improve the appearance.
That is, the vertical side wall portions 24a and 24b in FIG. 2 are formed high so as not to come off when the door glass DG moves up and down in consideration of an allowable error due to a positional displacement in the horizontal direction when the door glass DG moves up and down. . However, since the horizontal side wall portions 34a and 34b in FIG. 3 merely move the upper edge of the door glass DG forward and backward, the height is reduced to enhance the appearance. Further, the horizontal side wall portions 34a and 34b are formed so that the horizontal side wall portion 34a on the inside of the vehicle is formed lower than the horizontal side wall portion 34b on the outside of the vehicle, so that the appearance from the outside of the vehicle is improved.

As shown in FIG.
Is formed so that the terminals of the vertical-side extruded part 20 and the horizontal-side extruded part 30 are connected in an L-shape by molding. FIG. 5 is a sectional view taken along line 5-5 in FIG. The corner mold portion 40 includes a mold side base portion 42, mold side wall portions 44a and 44b, and mold side seal lips 46a and 46.
b and the mold side engagement lips 48a, 48b, and these are integrally formed.

FIG. 6 is an explanatory view of the vicinity of the corner forming section 40 as viewed from the direction in which it is mounted on the outside of the vehicle. FIG. 7 is an explanatory view of the vicinity of the corner forming section 40 as viewed from the direction of being mounted on the inside of the vehicle. It is. The corner-shaped forming section 40 has a variable connection section 40A that is connected from the vertical extrusion section 20 to the horizontal extrusion section 30 with a gradually decreasing cross-sectional area. As described above, since the vertical side wall portions 24a and 24b of the vertical side extruded portion 20 are higher than the horizontal side wall portions 34a and 34b of the horizontal side extruded portion 30, the variable connection portion 40A has a cross-sectional area thereof. By gradually changing the difference, the appearance is improved and the concentration of stress is reduced.

As shown in FIG. 7, the thickness t2 of the mold base 42 of the corner molding part 40 is larger than the thickness t1 of the vertical base 22 and the horizontal base 32 of the vertical extrusion molding part 20. It is formed thick. That is, by forming the mold-side base portion 42 to be thick to increase rigidity, the force with which the mold-side engagement lip 48b engages with the frame corner portion FRc is increased. Also, as shown in FIG. 7 and the sectional view of FIG. 8 along the line 8-8 in FIG.
Are formed in a mountain-like shape and are divided into discontinuous protrusions 48b-1 and 48b-2 in order to improve the mounting workability. The push-out side engagement lip 28b and the push-out side engagement lip 38b protrude larger than the engagement lip 28b. Further, the mold side engaging lip 48a is also protruded from the pushing side engaging lip 28a and the pushing side engaging lip 38a to increase the engaging force. Therefore, the force by which the corner molded portion 40 is supported by the frame corner portion FRc is greater than the force exerted by the vertical extrusion portion 20 and the horizontal extrusion portion 30 by the vertical frame portion FRr.
And the force supported by the upper frame portion FRh.

The glass run 10 for a vehicle according to the embodiment described above has a vertical frame portion FRf,
FRr, upper frame portion FRh and frame corner portion F
The vertical-side extruded part 20, the horizontal-side extruded part 30, and the corner-shaped part 40 are attached to Rc and FRc by being pushed in, respectively. In this case,
The pushing-side engaging lip 28b of the vertical-side extruding section 20, the pushing-side engaging lip 38b of the horizontal-side extruding section 30, and the mold-side engaging lip 48b of the corner-shaped forming section 40 engage with the engaging recesses FRk. By doing so, it is held by the elastic force.

In the above-mentioned mounting state, the corner molding 4
0, the rigidity in the width direction is formed to be greater than that of the vertical side base portion 22 of the vertical side extruded portion 20 and the like, and the force to engage with the frame corner portion FRc is large. In the frame corner portion FRc in which the dimensional tolerance is more likely to vary than in the case of, for example, the desired shape is maintained without bending and narrowing in the width direction.
Therefore, the corner-shaped forming section 40 does not shift in position with respect to the sliding of the door glass DG.

In addition, since the corner mold 40 has high rigidity in the width direction of the mold base 42, the vertical frame F
Even when press-fitted into Rr, the shape can be maintained and firm positioning can be achieved.

Further, the rigidity of the mold base 42 is increased only by increasing the wall thickness. Therefore, the mold can be easily manufactured by slightly changing the shape of the injection mold.

Further, since the mold side engaging lip 48b is formed on the inner mold side wall portion 44b which is larger than the outer mold wall portion 44a, the engaging force with the frame corner portion FRc can be increased.

Next, materials for forming the glass run 10 for a vehicle will be described. The horizontal-side extruded portion 30 and the vertical-side extruded portion 20 of the vehicle glass run 10 are formed of the same material (first material). That is, the first material is made of an olefin-based thermoplastic elastomer, and mainly contains 70 parts by weight of EPDM and 30 parts by weight of PP. On the other hand, the corner molding 40 is formed of a second material having a lower viscosity than the first material. The second material is
It is prepared by adding a third material having a low viscosity to the first material. As the third material, PP having a lower molecular weight and a lower viscosity than the PP blended in the first material can be used. The second material is the first material and the third material is 1 to 1
It is prepared so that its melting point becomes 150 to 160 ° C. by adding 0 parts by weight.

The viscosity of the second material is lower than the viscosity of the first material, and the value of the viscosity is JIS K7210 (ISO 1).
1339) is defined as follows using the thermoplastic flow test method. The above test method measures the extrusion speed when a molten thermoplastic material is extruded through a die having a specified length and diameter under specified temperature and load conditions. As a test condition, the temperature of the molten material was 230 ° C., and a load condition was 10 kg. As defined by this test, the MF of the first material
R is 45 to 70 (g / 10 min), and the MFR of the second material is 70 to 100 (g / 10 min).

Next, the manufacturing process of the glass run 10 for a vehicle will be described. The manufacture of the glass run 10 for a vehicle includes:
This is performed by a general-purpose process. That is, the first material is extruded to form an extruded member that constitutes the vertical extrusion section 20 and the horizontal extrusion section 30. Subsequently, a molding step is performed. The molding die (not shown) is the corner molding part 4
0 is provided. The gate of the molding die is composed of a horizontal extrusion molding section 30 and a vertical extrusion molding section 2.
When the second material flows toward the terminal of 0, the second material is provided at a position where the second material is filled at substantially the same weight ratio.
That is, in the corner-shaped forming section 40 shown in FIG. 6, it can be provided at a position corresponding to the injection position Gt.

Subsequently, while the mold is kept at 60 to 80 ° C. in advance, the vertical extruders 20 and 20 and the horizontal extruder 30 are set on the mold. The second material is injected from the injection molding machine into the cavity through the gate. The second material injected into the cavity reaches the respective terminals of the horizontal-side extruded portion 30 and the vertical-side extruded portion 20 and melts the respective terminals by the heat and pressure. The molding part 40 is heat-welded to the horizontal extrusion part 30 and the vertical extrusion part 20, respectively, and integrated. As a result, without post-processing,
The glass run 10 for a vehicle shown in FIG. 2 is completed.

In the glass run 10 for a vehicle according to the above configuration, the second material injected to manufacture the corner molded portion 40 is applied to each terminal of the horizontal extruded portion 30 and the vertical extruded portion 20. Then, the surface is melted by the heat and pressure. However, since the same olefin-based thermoplastic elastomer as the first material is used, it can be easily heat-welded to both terminals.

Moreover, since the second material has a lower viscosity and a higher fluidity than the first material, the injection position G shown in FIG.
From t, the horizontal extrusion part 30 and the vertical extrusion part 2
Even if the distance L1 to each of the terminals 0 is long, the terminal reaches the terminal in a molten state while maintaining a high temperature, and the two terminals are melted and thermally welded by the heat and pressure. Therefore, even when the horizontal extrusion part 30 and the vertical extrusion part 20 have different cross-sectional shapes and the length of the corner molding part 40 is increased, the corner molding part 40 is Since the heat welding is reliably performed, the connection strength can be increased.

Further, as a material of the corner molding part 40,
By changing to the second material having a low viscosity, the hardness of the portion is slightly increased, but there is almost no effect on the use performance as the glass run 10 for a vehicle. That is, since the vertical extruded section 20 and the horizontal extruded section 30 use the first material which is a normal thermoplastic elastomer, the use performance of the glass run 10 for a vehicle does not decrease.

The present invention is not limited to the above-described embodiment, but can be carried out in various modes without departing from the gist of the present invention. For example, the following modifications are possible.

(1) In the above embodiment, the glass run mounted on the side door SD of the vehicle has been described. However, the present invention is not limited to this, and the vehicle is not limited to a vehicle such as a train, for example, a railway vehicle, a water vehicle. The present invention can also be applied to a glass lifting window in a transport ship or the like.

(2) Various means can be used to increase the rigidity in the width direction of the mold-side base portion in the corner-molded portion. For example, a method of partially adding a filler or a method using a resin Various configurations such as changing to materials can be adopted.

(3) In the above-described embodiment, as a means for increasing the rigidity in the width direction of the mold-side base portion, the mold-side base portion is made thicker over the entire area.
The ribs may be formed in the width direction, or the ribs may be formed in a lattice shape to partially increase the rigidity.

(4) The mold side engaging lip 48b shown in FIG.
Has been described as a configuration divided into the protruding portions 48b-1 and 48b-2. However, the present invention is not limited to this, and may be formed continuously in an L-shape to increase the engagement force with the frame corner portion. .

[Brief description of the drawings]

FIG. 1 is an external view showing a side door SD of an automobile equipped with a glass run 10 for a vehicle according to an embodiment of the present invention.

FIG. 2 is an external view showing a glass run 10 for a vehicle.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 in FIG. 1;

FIG. 5 is a sectional view taken along the line 5-5 in FIG. 1;

FIG. 6 is an explanatory view of the vicinity of the corner forming part 40 as viewed from a direction in which the corner forming part 40 is mounted on the vehicle outside.

FIG. 7 is an explanatory view of the vicinity of the corner forming section 40 as viewed from a direction in which the corner forming section 40 is attached to the vehicle interior.

FIG. 8 is a sectional view taken along line 8-8 in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Glass run for vehicles 20 ... Vertical extrusion part 22 ... Vertical base part 24a, 24b ... Vertical side wall part 26a, 26b ... Vertical seal lip 28a, 28b ... Extrusion side engagement lip 30 ... Horizontal extrusion part 32 horizontal base portions 34a, 34b horizontal side wall portions 36a, 36b horizontal seal lips 38a, 38b extrusion side engagement lip 40 corner forming portion 40A variable connection portion 42 die base portions 44a, 44b ... mold side walls 46a, 46b ... mold side seal lips 48a, 48b ... mold side engagement lips 48b-1, 48b-2 ... projecting parts DG ... door glass FR ... frame FRc ... frame corners FRf, FRr ... vertical frame parts FRh: Upper frame part FRk: Engagement recess FRm: Bend part FRu: Retainer Gt: Injection position SD: Side door

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenichi Tsuboi No. 1, Nagahata, Ogai, Kasuga-cho, Nishikasugai-gun, Aichi F-term (reference) 3D127 AA03 AA15 AA19 BB01 CB05 CC05 CC13 DE17 DE32 DE38 EE16 EE25 GG08 GG09

Claims (2)

[Claims] 1. A frame having a substantially straight frame body and a substantially L-shaped frame corner portion connected to the frame body and attached to a frame having a substantially U-shaped cross section to slidably support a door glass. In a vehicle glass run, an extrusion-side base portion, an extrusion-side side wall portion projecting from both sides of the extrusion-side base portion and forming a U-shaped cross section with the extrusion-side base portion, and projecting from an outside of the extrusion-side base portion. A push-side engaging lip that is engaged with the inner wall of the frame body, and is attached to the frame body; a push-side base portion, a push-side side wall portion, and a push-side engaging lip of the push-formed portion. Each terminal has a mold side base portion, a mold side wall portion, and a mold side engaging lip which are continuously connected by molding, and a corner molded portion attached to the frame corner portion, Up The mold side base is wider in the width direction than the extrusion side base so that the force with which the extrusion side engagement lip engages with the frame body is greater than the force with which the mold side engagement lip engages with the frame corner. A glass run for a vehicle, characterized by having increased rigidity. 2. The vehicle glass run according to claim 1, wherein the mold-side base portion is formed to be thicker than the extrusion-side base portion.