JP4079825B2 - Automotive window glass guide, automotive window glass guide structure, automotive glass guide manufacturing method, and automotive glass guide manufacturing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The invention of the present application relates to long parts for automobiles such as various guides, moldings, and garnishes, and particularly relates to a glass guide that guides movement of a window glass and its manufacture.
[0002]
[Prior art]
Many types of long parts are used in various automobiles including passenger cars. These include various guides, malls such as belt malls, weather strips that block rainwater, and the like. Some of these long parts are made of resin and manufactured by injection molding, while others are made of metal and manufactured by rolling and roll forming. The glass guide for guiding the movement of the window glass also belongs to the latter example.
[0003]
[Problems to be solved by the invention]
Such long parts for automobiles are required to be further reduced in weight after having necessary strength and the like, as with other parts. This is mainly due to the background of environmental problems and to meet the demand for reducing the amount of exhaust gas by reducing the weight of the entire vehicle.
The invention of the present application has been made in order to solve such a problem, and has technical significance to provide a method for manufacturing a novel glass guide and a long automotive part that contribute to weight reduction of the entire vehicle. .
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 of the present application is a long glass guide for guiding the movement of the window glass for an automobile, and has a U-shaped cross section in which a slider supporting the window glass is inserted. And has a thin part that is thinner than other parts,
The thin-walled portion is formed by rolling over the entire length of the glass guide in the length direction, and has a configuration in which the thin-walled portion is formed in a portion other than the corner portion having a U-shaped cross section.
In order to solve the above problem, the invention according to claim 2 has a configuration in which the thin portion has a thickness of 60% or more in comparison with other portions in the configuration of claim 1.
In order to solve the above problem, the invention according to claim 3 has a configuration in which the thin portion is formed at the center of one side having a U-shaped cross section in the configuration of claim 1 or 2. .
In order to solve the above problem, the invention according to claim 4 is the structure according to claim 1, wherein the thin-walled portion is formed on a pair of side plate portions facing each other in a U-shaped cross section. Have.
In order to solve the above-mentioned problem, the invention according to claim 5 has a configuration in which the thin-walled portion is formed by providing a concave portion on the inner surface.
In order to solve the above problems, the invention according to claim 6 is directed to a window glass in which a window glass for an automobile is supported by two sliders, and a slide portion of each slider is inserted into a long glass guide having a U-shaped cross section. A window glass guide structure for guiding the movement of the vehicle,
The clearance between the inner surface of one glass guide into which the slide portion of one slider is inserted and the slide portion is larger than the clearance between the inner surface of the other glass guide into which the slide portion of the other slider is inserted and the slide portion. small,
One glass guide with a small clearance has a thin part formed by providing a recess on the inner surface,
The thin portion has a configuration in which it is formed over the entire length of the glass guide in the length direction.
Moreover, in order to solve the said subject, invention of Claim 7 is a glass guide manufacturing method which manufactures the glass guide which guides the movement of the window glass for motor vehicles,
Rolling a base plate having a predetermined thickness and width to form a thin-walled portion having a thickness thinner than other portions at a predetermined position in the width direction by a rolling unit;
A step of performing roll forming by a roll forming unit continuously after rolling without cutting the base plate,
The forming roller that forms the roll forming unit has a configuration in which both sides of the base plate are bent to have a U-shaped cross section.
Moreover, in order to solve the said subject, invention of Claim 8 is a glass guide manufacturing apparatus which manufactures the glass guide which guides the movement of the window glass for motor vehicles,
A rolling unit that rolls a base plate with a predetermined thickness and width to form a thin-walled portion that is thinner than other portions at a predetermined position in the width direction, and continuously after rolling without cutting the base plate A roll forming unit that performs roll forming, and a forming roller forming the roll forming unit has a configuration in which both side portions of a base plate are formed into a U-shaped cross section.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described.
FIG. 1 is a schematic perspective view showing a glass guide according to an embodiment of the present invention and a window glass guide structure using the glass guide, and FIG. 2 is a cross-sectional view of the glass guide shown in FIG. The glass guides 1 and 2 of this embodiment guide the door glass 3, and are provided in a door panel. As shown in FIG. 1, the glass guides 1 and 2 are a pair of front side and rear side. The glass guides 1 and 2 are arranged in a vertically extending posture. The two glass guides 1 and 2 are fixed to a panel (inner panel) located on the indoor side among the two panels constituting the door body 4.
[0006]
As shown in FIG. 2, the front guide 1 has a U-shaped cross section and includes a pair of side plate portions 11 that face each other and a back plate portion 12 that connects the side plate portions 11. A major characteristic point of the glass guide 1 of the present embodiment is that the side plate part 11 has a part (thin part) 111 with a small thickness for weight reduction. As shown in FIG. 2, the thin portion 111 is formed so as to occupy an area of about 70 to 80% in the center of the side plate portion 11. The position and size of the thin portion 111 are the same in the side plate portions 11 on both sides. Moreover, as shown in FIG. 2, the thin part 111 is the state which provided the recessed part in the outer surface in the side plate part 11 of both sides. Therefore, the inner surface is a flat surface.
[0007]
Next, as shown in FIG. 2, the rear guide 2 also has a substantially U-shaped cross section, and includes a pair of side plate portions 21 that face each other and a back plate portion 22 that connects the side plate portions 21. As shown in FIG. 2, the front ends of the side plate portions 21 on both sides are bent inward, and an opening is formed by the edges. The rear guide 2 also has a thin portion 221. As shown in FIG. 2, the rear guide 2 has a thin portion 221 on the back plate portion 22. The thin portion 221 is formed so as to occupy an area of about 60 to 70% in the center of the back plate portion 22. In the case of the rear guide 2, the thin portion 2211 is formed with a recess on the inner surface. Therefore, the outer surface is a flat surface.
[0008]
The operation of mounting the door glass 3 on the glass guides 1 and 2 will be described below. As shown in FIG. 1, sliders 51 and 52 are provided on the lower edge of the door glass 3. The sliders 51 and 52 are provided at the front and rear according to the positions of the glass guides 1 and 2. As shown in FIG. 2, the sliders 51 and 52 include support portions 511 and 521 that support the glass guides 1 and 2 at the lower edge, slide portions 512 and 522 inserted into the glass guides 1 and 2, and support portions. It consists of relay parts 513 and 523 that connect 511 and 521 and slide parts 512 and 522. The sliders 51 and 52 are made of resin having a certain degree of elasticity. The support portions 511 and 521 have a U-shaped cross section with the opening facing upward, and the lower edge of the door glass 3 is fitted therein.
[0009]
The configuration of the slide portions 512 and 522 is different between the front side and the rear side. In the rear slider 52, the slide portion 522 has a substantially square cross section and is slightly smaller than the cross section of the rear guide 2. That is, there is only a slight clearance between the rear guide 2 and the rear slider 2.
On the other hand, in the slider 51 on the front side, the slide part 512 is provided so as to extend perpendicularly to the relay part 513. The front guide 1 is fixed to the inner panel with the opening directed to the rear side. The slide portion 512 of the front slider 51 has a size that is somewhat smaller than the cross section of the front guide 1. In other words, when the front slider 51 slide portion 512 is inserted into the front guide 1, a certain amount of clearance is formed between the inner surface of the front guide 1 and the slide portion 512.
A cushioning portion 514 having a cushioning property is provided on the slide portion 512 of the slider 51 on the front side. Further, the slide portion 522 of the slider 52 on the rear side is also provided with a projection 524 having a cushioning property.
[0010]
When the door glass 3 is attached to such a pair of glass guides 1 and 2, the slide portion 522 of the rear slider 52 is first inserted into the rear guide 2 while the door glass 3 is tilted rearward. Next, the slide part 512 of the front slider 51 is inserted into the front guide 1 while lowering the front part of the door glass 3. Then, the door glass 3 is lowered to the lower limit position while the front and rear glass guides 1 and 2 guide the sliders 51 and 52. In addition, in the center of the lower edge of the door glass 3, a driving support body that supports the door glass 3 in order to move the door glass 3 up and down is provided.
[0011]
The reason for the small clearance in the rear guide 2 is to eliminate the rattling of the door glass 3. The reason why the front guide 1 has a larger clearance is to facilitate the mounting of the door glass 3. Although it is preferable to reduce the backlash in the front guide 1 as well, it is difficult to attach the door glass 3. In the configuration of the present embodiment, both can be satisfied.
[0012]
Such glass guides 1 and 2 are made of mild steel such as SPC (cold rolled steel plate) and SPH (hot rolled steel plate) in accordance with JIS standards. Since the glass guides 1 and 2 of the embodiment have the thin portions 111 and 211 as described above, the weight is further reduced. For this reason, it contributes to the weight reduction of the whole vehicle, and contributes to reduction of the amount of exhaust gas.
In particular, in the configuration of the rear guide 2, the thin portion 221 is provided with a recess formed on the inner surface. This point has the technical significance of enabling a smoother guide even in a configuration in which the clearance with the slider 52 is reduced to reduce rattling. That is, as shown in FIG. 2, when the concave portion is formed on the inner surface to form the thin portion 221, the area where the slide portion 522 of the slider 52 contacts the rear guide 2 is reduced. For this reason, frictional resistance becomes small and the slide part 522 is smoothly guided. In addition, about the front side guide 1 with a large clearance, a recessed part may be provided in an inner surface, or a recessed part may be provided in an outer surface.
[0013]
The production of such glass guides 1 and 2 will be described below. In the following description, a case where the front guide 1 is manufactured will be described as an example.
FIG. 3 is a schematic front view of a glass guide manufacturing apparatus for manufacturing the front guide in FIGS. 1 and 2. The apparatus shown in FIG. 3 obtains a cross-sectional shape as shown in FIG. 2 by rolling and roll forming a plate 6 (hereinafter referred to as a “base plate”) that is a base of the glass guides 1 and 2 as products. .
The apparatus shown in FIG. 3 mainly includes a rolling unit 71 that performs a rolling operation, and a roll forming unit 72 that performs a forming operation in succession to the rolling operation by the rolling unit 71.
[0014]
The rolling unit 71 includes a plurality of pairs of rolling rollers 711 to 715 arranged on the transfer line of the base plate 6 and a plurality of pairs of guide rollers 73 that guide the transfer of the base plate 6. Each pair of guide rollers 73 is provided on both sides of each rolling unit 71. Each pair of rolling rollers 711 to 715 rolls the base plate 6 with the upper rolling rollers 711 to 715 applying a load to the lower side with the base plate 6 sandwiched therebetween. The upper rolling rollers 711 to 715 are provided with a pressure mechanism (not shown). The lower rolling rollers 711 to 715 perform rolling while receiving a load from the upper rolling rollers 711 to 715.
[0015]
A backup roller 710 is provided below the lower rolling rollers 711 to 715. The backup roller 710 is provided to back up the lower rolling rollers 711 to 715 in strength. Since a large load is applied to the lower rolling rollers 711 to 715 during rolling, a backup roller 710 is provided for the purpose of reducing the burden.
[0016]
The thin portion 111 is formed on the base plate 6 by the plurality of pairs of rolling rollers 711 to 715. In this embodiment, five pairs of rolling rollers 711 to 715 are provided. FIG. 4 is a schematic cross-sectional view of a pair of rolling rollers 715 (hereinafter, the most downstream pair rolling roller) located on the most downstream side on the transfer line of the base plate 6 among the five pairs shown in FIG. As shown in FIG. 4, the uppermost downstream pair rolling roller 715 has a simple cylindrical shape, but the lowermost downstream pair rolling roller 715 has two protrusions 70. The ridges 70 are provided so as to extend 360 degrees on the peripheral surface coaxially with the most downstream pair of rolling rollers 715 themselves.
[0017]
The width w and height h of the ridge 70 are adapted to the width and thickness of the thin portion 111 of the front guide 1 shown in FIG. In addition, the pressure mechanism provided on the upper rolling rollers 711 to 715 of the most downstream paired rolling rollers 715 adjusts the pressure so that the thickness T at a portion other than the thin portion 111 becomes a predetermined value. It is supposed to be.
Except for the most downstream pair of rolling rollers 715, the width w of the protrusions 70 of the lower rolling rollers 711 to 714 is substantially the same, but the settings of the height h and the thickness T are slightly different. . That is, the base plate 6 is gradually compressed as it is transferred, so that the thickness t of the thin portion 111 and the thickness T of other portions shown in FIG.
[0018]
The roll forming unit 72 is mainly composed of a plurality of pairs of forming rollers 721 to 727. Each pair of forming rollers 721 to 727 is arranged along the transfer line of the base plate 6 and is formed while sandwiching the base plate 6 up and down. In the present embodiment, seven pairs of forming rollers 721 to 727 are provided. Hereinafter, the pair of forming rollers 721 to 727 will be referred to as a first pair of forming rollers 721, a second pair of forming rollers 722,.
[0019]
FIG. 5 is a view for explaining molding in the roll forming unit 72. On the left side of FIG. 5, a change in the cross-sectional shape of the base plate 6 when molding is performed by each pair of molding rollers 721 to 722 is shown. On the right side of FIG. 5, an outline of a cross-sectional shape of each pair of forming rollers 721 to 727 for performing such forming is shown.
[0020]
The base plate 6 after the rolling is guided by the guide roller 73 and is first sandwiched between the first pair of forming rollers 721. As shown in FIG. 5, the first pair of forming rollers 721 have tapered surfaces with a slight angle with respect to the horizontal on both sides. Accordingly, the base plate 6 sandwiched between the first pair of forming rollers 711 is in a state in which both side portions are slightly raised. A pair of pinch rollers may be provided in front of the first pair of forming rollers 721. The pinch roller is a roller that sandwiches and holds the base plate 6, and is a roller that prevents positional displacement of the base plate 6 during molding by the molding roller.
[0021]
Next, as shown in FIG. 5, both side portions of the second pair forming roller 722 are tapered surfaces with a slight angle with respect to the horizontal. For this reason, the base plate 6 sandwiched between the second pair forming rollers 722 is in a state in which both side portions are raised slightly.
Both side portions of the third pair forming roller 723 are further angled, and both side portions of the base plate 6 sandwiched between the third pair forming rollers 723 are further raised. The same applies to the fourth and fifth pairs of forming rollers 724 and 5, and the both side portions of the base plate 6 gradually rise up. The fifth pair forming roller 725 stands upright on both sides of the base plate 6 completely vertically.
[0022]
As shown in FIG. 5, the sixth pair forming roller 726 is configured such that both side portions of the base plate 6 are further bent (greater than 90 degrees) and the both side portions are inclined slightly inward. . Further, the seventh paired forming roller 727 is the same as the fifth paired forming roller 715, and is configured so that both side portions are erected vertically. In this way, the base plate 6 is formed into a U-shaped cross section as shown in FIG. In addition, bending the both side portions of the base plate 6 inward in the sixth pair forming roller 726 reduces the stress in the base plate 6 by bending it once more than 90 degrees and then returning it to 90 degrees again. This is to stabilize the shape after molding.
[0023]
On the downstream side of the roll forming unit 72, there is provided a cutting machine (not shown) that cuts the base plate 6 by a predetermined length and uses it as a final product guide glass. In addition, after roll forming, a bending process for bending the longitudinal axis of the glass guides 1 and 2 may be performed. In this case, a bending machine is provided between the roll forming unit 72 and the cutting machine. In some cases.
[0024]
Next, operation | movement of the glass guide manufacturing apparatus which concerns on the said structure is demonstrated below.
First, the base plate 6 having a predetermined thickness and width is put into the rolling unit 71 and rolled. At this time, the base plate 6 wound in a roll shape may be pulled out and put, and prior to the introduction into the rolling unit 71, preliminary rolling to make the base plate 6 a predetermined thickness and width is performed. Sometimes it is done. In the rolling unit 71, as described above, the thin portion 111 having a predetermined width and thickness is formed, and rolling is performed so that the other portions have a predetermined thickness.
[0025]
The base plate 6 that has been rolled is then put into a roll forming unit 72. In the roll forming unit 72, as described above, both side portions are gradually raised, and finally formed into a U-shaped cross section. Thereafter, bending is performed as necessary, and then the base plate 6 is cut into a predetermined length by a cutting machine (not shown), and finally the front guide 1 as a product is completed. The rear guide 2 can be basically manufactured by the same manufacturing apparatus except that the shape of the rolling roller, the size of pressure, the shape of the forming roller, and the like are different.
[0026]
In the said glass guide manufacturing apparatus, it is preferable that extension of the base plate 6 in the case of rolling is not a width direction but a longitudinal direction. If extension occurs in the width direction, the width of the base plate 6 after rolling is likely to vary, so that finishing such as cutting the side edges of the base plate 6 after cutting may be necessary. If the extension is made to occur in the longitudinal direction, a finished product is basically not necessary because a product can be obtained simply by cutting the transferred base plate 6 by a predetermined length.
[0027]
According to the glass guide manufacturing apparatus of the above-described embodiment, the formation of the thin portion 111 by rolling and roll forming are performed continuously, so that the production efficiency is high and the workability is excellent. If the formation of the thin-walled part 111 by rolling and roll forming are performed by separate machines, after forming the thin-walled part 111, it is cut into a predetermined length to make a semi-finished product, which is again formed by roll forming A troublesome work like throwing it into the machine is required. According to the apparatus of this embodiment, there is no such problem.
Such technical significance is applicable not only to a glass guide manufacturing apparatus, but also to an apparatus for manufacturing all long parts for automobiles that require thin wall formation and roll forming by rolling. Various malls such as drip malls, garnish and other guide parts.
[0028]
Next, a glass guide according to another embodiment will be described.
FIG. 6 is a cross-sectional view of a glass guide according to another embodiment. The glass guide 2 shown in FIG. 6 corresponds to the rear guide 2 shown in FIG. In this embodiment, it has not only the thin part 221 provided with the recessed part formed in the inner surface of the glass guide 2, but the thin part 211 provided with the recessed part formed in the outer surface. Thus, in addition to the thin part 221 provided by forming a concave part on the inner surface, it is preferable to form the concave part on the outer surface and provide the thin part 211 because a further weight reduction is achieved.
In any of the embodiments, the thickness of the thin portion is preferably 60% or more with respect to the thickness of other portions from the viewpoint of securing the strength.
[0029]
【Example】
Next, examples of the glass guide 1 belonging to the embodiment shown in FIG. 2 will be described. For example, for a door glass for a passenger car such as a sedan, a glass guide having the following dimensions is manufactured in the case of the front guide 1 shown in FIG. First, the thickness T other than the thick portion 111 is about 1.0 to 1.4 mm, the width w of the thin portion 111 is about 15 to 20 mm, and the thickness t of the thin portion 111 is about 0.6 to 1.0 mm. is there.
Although the glass guide of the said embodiment and an Example guides door glass, it may guide window glass other than door glass. For example, a glass guide for a window glass of a rear seat in a two-door type passenger car.
[0030]
【The invention's effect】
As described above, according to the window glass guide for an automobile according to claim 1 of the present application, since the thin-walled portion is thinner than other portions, the weight is further reduced, and the weight of the entire vehicle is reduced. Contribute to reducing the amount of exhaust gas.
Further, according to the window glass guide for an automobile according to claim 5, in addition to the effect of claim 1, the thin portion is formed by providing a concave portion on the inner surface, so that the slide portion of the slider is inserted with a small clearance. In this case, the contact area is reduced, which contributes to smoother movement of the window glass.
According to the sixth aspect of the invention, the clearance between the inner surface of one glass guide into which the slide portion of one slider is inserted and the slide portion of the other slider is the other glass guide into which the slide portion of the other slider is inserted. One of the glass guides having a small clearance is smaller than the clearance between the inner surface and the slide portion, and has a thin wall portion formed by providing a recess on the inner surface. It is possible to smoothly move the window glass while reducing rattling.
Further, according to the seventh aspect of the present invention, since a lighter automobile window glass guide can be manufactured, it contributes to weight reduction of the entire vehicle and contributes to reduction of the amount of exhaust gas. In addition, since the formation of the thin portion by rolling and roll forming are continuously performed, the production efficiency is high and the workability is excellent.
According to the invention described in claim 8, since rolling and roll forming are performed continuously, the production efficiency is high and the workability is excellent.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a glass guide according to an embodiment of the present invention and a window glass guide structure using the glass guide.
FIG. 2 is a cross-sectional view of the glass guide shown in FIG.
FIG. 3 is a schematic front view of a glass guide manufacturing apparatus for manufacturing a front guide in FIGS. 1 and 2;
4 is a schematic cross-sectional view of a pair of rolling rollers 715 located on the most downstream side on the transfer line of the base plate 6 among the five pairs shown in FIG.
FIG. 5 is a view for explaining molding in the roll forming unit 72;
FIG. 6 is a cross-sectional view of a glass guide according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Glass guide 11 Side board part 111 Thin part 12 Back board part 2 Glass guide 21 Side board part 22 Back board part 221 Thin part 3 Door glass 4 Door main body 51 Slider 511 Support part 512 Slide part 513 Relay part 52 Slider 521 Support part 522 Slide Section 523 Relay section 6 Base plate 71 Rolling units 711 to 715 Rolling roller 72 Roll forming units 721 to 727 Forming roller 73 Guide roller

Claims (8)

It is a long glass guide that guides the movement of window glass for automobiles, and has a U-shaped cross section in which a slider that supports the window glass is inserted, and has a thin part that is thinner than other parts. And
The thin-walled portion is formed by rolling over the entire length of the glass guide in the length direction, and is formed in a portion other than the corner portion having a U-shaped cross section. Glass guide.   The glass guide for an automobile window according to claim 1, wherein the thin portion has a thickness of 60% or more as compared with other portions.   The glass guide for an automobile window according to claim 1 or 2, wherein the thin portion is formed at the center of one side having a U-shaped cross section.   The glass guide for an automobile window according to any one of claims 1 to 3, wherein the thin portion is formed on a pair of side plate portions facing each other in a U-shaped cross section.   The window glass guide for an automobile according to any one of claims 1 to 4, wherein the thin portion is formed by providing a concave portion on an inner surface. An automotive window glass guide structure is supported by two sliders, and the sliding portion of each slider is inserted into a long glass guide having a U-shaped cross section to guide the movement of the window glass,
The clearance between the inner surface of one glass guide into which the slide portion of one slider is inserted and the slide portion is larger than the clearance between the inner surface of the other glass guide into which the slide portion of the other slider is inserted and the slide portion. small,
One glass guide with a small clearance has a thin part formed by providing a recess on the inner surface,
The thin-walled portion is formed over the entire length in the length direction of the glass guide. A glass guide manufacturing method for manufacturing a glass guide for guiding the movement of an automobile window glass,
Rolling a base plate having a predetermined thickness and width to form a thin-walled portion having a thickness thinner than other portions at a predetermined position in the width direction by a rolling unit;
A step of performing roll forming by a roll forming unit continuously after rolling without cutting the base plate,
A method for producing a glass guide, wherein a forming roller forming a roll forming unit performs forming into a U-shaped cross section by bending both side portions of a base plate. A glass guide manufacturing apparatus for manufacturing a glass guide for guiding the movement of a window glass for an automobile,
A rolling unit that rolls a base plate with a predetermined thickness and width to form a thin-walled portion that is thinner than other portions at a predetermined position in the width direction, and continuously after rolling without cutting the base plate A roll forming unit for performing roll forming, and the forming roller constituting the roll forming unit performs forming into a U-shaped cross section by bending both side portions of the base plate. apparatus.

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