JP2004017838A - Lower sash structure for automobile door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure having a sufficient function as a draining passage, in regard to a resin lower sash of an opening bottom wall structure. <P>SOLUTION: In a sash body 3 alternately formed with bridge bottom wall portions 6 and window-shaped opening portions 8, a lower flowing water guide 11 is inwardly formed at a lower end of the bridge bottom wall portion 6 by bending, and an upper flowing water guide is outwardly formed at an upper end of the bridge bottom wall portion 6. Simultaneously, a bead-shaped guide 12 connecting to the lower flowing water guide 11 is formed on a side wall portion 7. Water flowing in the sash body 3 is made to drop from the lower flowing water guide 11 or flow in the bead-shaped guide 12, and then the upper flowing water guide 12 received the water. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of a lower sash in an automobile door, and more particularly, to a structure of a lower sash which is disposed in an interior of an automobile door and is integrally formed with a resin material so as to guide and support a door glass in a vertically movable manner. About.
[0002]
[Prior Art and Problems to be Solved by the Invention]
For example, Japanese Patent Application Laid-Open No. 9-240279 and Japanese Patent Application Laid-Open No. 2000-80857 are known as this kind of resin-integrated lower sash structure. A glass run rubber is attached to a metal glass run channel. It is said that it is advantageous in reducing the weight and manufacturing cost as compared with the type. In particular, those described in the above publications focus on material cost and weight reduction and simplification of the mold structure, and in any case, the ribs required at a portion corresponding to the bottom wall portion of the channel-like sash are the minimum necessary. The remaining portion is punched out, leaving a substantially open bottom wall structure.
[0003]
On the other hand, the main function of the lower sash is not only to guide and support the door glass, but also to ensure a flowing water path inside the door. For example, the lower sash 30 on the rear side of the front door 1 shown in FIG. In this case, the door lock actuator 31 is disposed at a lower rear portion of the lower sash 30. In the lower sash 30 having the open bottom wall structure described above, a sufficient water flow path cannot be ensured, and water leaks from the middle, so that the door lock actuator 31 cannot be sufficiently protected from getting wet.
[0004]
Although the door lock actuator 31 has a certain degree of waterproofing performance, it is desirable that exposure to water for a long time during rainfall be avoided as much as possible while maintaining the original performance of the actuator.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a structure in which a so-called resin-integrated lower sash can surely secure an original water flow path of the sash.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a resin-made lower sash disposed inside an automobile door for guiding and supporting a door glass so as to be able to move up and down, wherein a pair of side walls of a sash body having a channel-shaped cross section are opposed to each other. A glass guide portion protruding inwardly of the channel-shaped space is formed at predetermined intervals along the longitudinal direction at an opening edge of the portion, and a bridge bottom connecting the side walls to a bottom equivalent portion of the sash body. A wall portion and an opening window portion are alternately formed along the longitudinal direction, and a lower flowing water guide pointing inward of the channel-like space is provided at a lower end portion of the bridge bottom wall portion, and a channel-like shape is provided at an upper end portion of the bridge bottom wall portion. An upper running water guide pointing outward of the space is formed.
[0007]
Here, the sash body having a substantially open bottom wall structure is directed to the inside of the channel-like space for the lower flowing water guide and to the outside of the channel-like space for the upper flowing water guide. In order to make the channel-like space function effectively as a flowing water channel, the water flowing down from the lower flowing water guide at the bottom wall of the sash body is received by the upper flowing water guide located thereunder, and the sash body serving as a flowing water channel This is for flowing to the channel-like space side.
[0008]
In this case, the glass guide portion and the opening window portion may be offset from each other in the longitudinal direction, but for simplification of a mold structure for molding a lower sash by an injection molding method or the like, for example, As described in 2, the glass guides are desirably formed on the opening edges of the pair of side walls at positions corresponding to the opening windows.
[0009]
Further, in order to receive the water flowing down from the lower running water guide at the bottom wall portion of the sash body as described above by the upper running water guide located below the lower running water guide, an opening window portion is provided as claimed in claim 3. As a relative positional relationship between the lower running water guide and the upper running water guide located above and below, both running water guides overlap each other in the vertical direction when the lower sash is properly attached to the car door. It is desirable.
[0010]
Then, as described in claim 4, the lower end of the bridge bottom wall is bent inward into the channel-like space to form a lower running water guide, and the upper end of the bridge bottom wall is formed in the channel-like space. By bending outward, the upper running water guide is formed, and each running water guide is formed into a wedge shape in which the thickness gradually decreases toward its tip, in order to prevent water from flowing to the back side of each running water guide. Is effective in
[0011]
According to a fifth aspect of the present invention, the shape of the guide surface of the lower flowing water guide is such that the flow of the water is directed downward to the inner corner formed by the side wall portions on both sides. In order to promote the flow down, it is more preferable that a bead-shaped guide continuous to the lower running water guide is formed on the side wall portion.
[0012]
Therefore, according to the first to sixth aspects of the present invention, even if the lower sash has a substantially open bottom wall structure, the water flowing down from the lower flowing water guide to the outside of the channel-shaped space is received by the upper flowing water guide, and the bridge bottom is sunk. By repeating such a flow cycle several times by flowing over the wall, a continuous flow channel is secured from the upper end to the lower end of the lower sash, and water dripping from the middle of the lower sash as in the past Therefore, for example, it is possible to protect a door lock actuator and the like disposed close to the lower sash from being wet with water.
[0013]
In particular, when the water is directed to the inner corner formed by the lower running water guide and the side wall, the continuity of the flow of the water is easily ensured, and the drainage performance is further improved. In addition, when a bead-shaped guide that is continuous with the lower running water guide is formed as described in claim 6, water flows along the bead-shaped guide at a portion corresponding to the bridge bottom wall. This is more effective in preventing the occurrence of droplets and the like than in the case where the water drops dropped from the lower running water guide are received by the upper running water guide.
[0014]
The invention according to claim 7 is a resin-made lower sash disposed inside an automobile door for guiding and supporting a door glass so as to be able to move up and down, wherein a pair of side wall portions of a sash body having a channel-shaped cross section are opposed to each other. A glass guide protruding inwardly of the channel-shaped space is formed at predetermined intervals along the longitudinal direction at the opening edge of the sash body, and the bottom wall of the sash body has continuity in the longitudinal direction as a bottom wall. The opening windows are formed in a zigzag pattern so as to be staggered along the longitudinal direction while maintaining, and a dam bead is formed around each opening window to surround the window space. It is characterized in that a portion other than the opening window portion is formed as a continuous flowing water channel in the longitudinal direction.
[0015]
In this case, for the same reason as in claim 2, a glass guide portion is formed at the opening edge of each side wall portion at a position corresponding to the opening window portion as described in claim 8, and the glass on both side wall portions is formed. It is desirable that the arrangement of the guide portions be staggered so as to be staggered.
[0016]
According to the ninth aspect of the present invention, the dam bead on the lower end side of each opening window is locally cut off to open the window space to the flowing water channel side, while the lower edge of each opening window is formed as a channel. It is good also as a structure which formed the lower running water guide by bending to the outside of the shape space.
[0017]
Therefore, in the invention according to claims 7 to 9, since each opening window is isolated by the dam bead, a continuous water channel from the upper end to the lower end of the lower sash is secured with the bottom wall.
[0018]
【The invention's effect】
According to the first and second aspects of the present invention, even if a lower sash having a so-called open bottom wall structure and a cross-sectional channel shape, water leakage from the middle of the lower sash is prevented beforehand and the function as a flowing water channel is exhibited. Therefore, for example, a door lock actuator disposed close to the lower sash can be sufficiently protected from water.
[0019]
In particular, according to the third aspect of the present invention, since the lower running water guide and the upper running water guide overlap with each other in the vertical direction, water dropped from the lower running water guide is reliably received by the upper running water guide. This has the effect of more reliably preventing water leakage from the lower sash.
[0020]
According to the fourth aspect of the present invention, since each of the bent and formed lower running water guide and upper running water guide has a wedge shape, drainage at each running water guide is improved, and the running water guide on the back side is formed. Water spillage has the effect of preventing water leakage.
[0021]
According to the fifth aspect of the present invention, the guide surface of the lower running water guide directs the flow of water toward the inner corner formed by the side wall, thereby ensuring continuity of the flow of water. This has the effect of improving drainage performance.
[0022]
According to the invention as set forth in claim 6, since the bead-shaped guide that is continuous with the lower running water guide is formed on the side wall portion, water flowing from the lower running water guide to the upper running water guide side is transmitted through the bead-shaped guide. Since the water flows, there is no splash compared with the case where water drops from the lower running water guide to the upper running water guide, and there is an effect that it is possible to prevent water leakage due to the occurrence of the splash.
[0023]
According to the seventh and eighth aspects of the present invention, a continuous flowing water channel from the upper end to the lower end is ensured by effectively utilizing the continuity of the bottom wall of the sash body in which the opening windows are formed in a staggered manner. Accordingly, the same effect as that of the first aspect is obtained, and in particular, since the bottom wall itself is continuous, there is an advantage that water leakage from the middle of the lower sash can be more reliably prevented.
[0024]
According to the ninth aspect of the present invention, since the dam bead and the lower running water guide are used in combination, even if the water spills on the back side of the lower sash, the water is collected by the lower running water guide. The lower sash can be more reliably prevented from leaking in the middle of the lower sash.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
FIGS. 1 to 5 show a preferred embodiment of the present invention. FIG. 1 shows an example of a lower sash 2 provided inside a front door 1 of a vehicle and at a rear side thereof as shown in FIG. I have.
[0026]
As shown in FIG. 2, the lower sash 2 has an overall shape including a sash main body 3 having a substantially channel-shaped cross section, a box-shaped socket portion 4 at an upper end thereof, and a mounting bracket portion 5 at a lower end, such as polyacetal (POM). It is formed integrally with a resin material. The lower sash 2 is properly assembled to the front door 1 with a rearwardly inclined posture as shown in FIG. 1, the upper socket portion 4 is fitted and fixed to an upper sash (not shown), and the mounting bracket portion 5 is, for example, a door inner. It is fixed to the panel with screws. The door glass is supported so as to be able to move up and down together with a lower sash on the front side (not shown).
[0027]
The sash body 3 is formed by connecting the left and right side walls 7, 7 with a plurality of discontinuous bridge bottom walls 6, and has a rectangular window-like opening 8 and a bridge bottom wall at the bottom wall equivalent part. 6 are alternately arranged in the longitudinal direction. Then, in the portion corresponding to each window-shaped opening 8 of both side wall portions 7 and 7, the opening edge is formed to bulge in an arc shape so that the opening edges face each other inward and come into contact with the door glass. A glass guide 9 is formed.
[0028]
As shown in FIGS. 2 and 3, the upper end of each bridge bottom wall 6 is bent so as to be directed to the outside of the channel-like space to form the upper running water guide 10, and similarly, each bridge bottom wall 6 is also formed. The lower end of the portion 6 is bent so as to face the inside of the channel-shaped space to form a lower running water guide 11. The upper running water guide 10 and the lower running water guide 11 prevent the water flowing down from the upper end side of the lower sash 2 from flowing down from the opening window 8 to the outside of the lower sash 2, and the water is dropped from the lower running water guide 11. As shown in FIGS. 2 and 3, the lower flowing water guide 10 is set to receive the water dripping from the lower flowing water guide 11 without fail. As a relative positional relationship between the flowing water guide 11 and the upper flowing water guide 10 therebelow, the two are overlapped by a predetermined amount α in the vertical direction. In order to improve the drainage of both the upper running water guide 10 and the lower running water guide 11 while preventing the water from flowing from the front end to the back side, the thickness of each guide gradually increases from the root to the front end side of each guide. Further, the lower running water guide 11 is formed in a wedge-shaped cross section so as to be smaller, so that water flowing down from the guiding surface 11a is collected at the inner corners formed by the side walls 7 on both sides. The center portion is smoothly bulged upward in an arc shape, and the bulge amount is set to be larger as it goes down and the bulge width is made larger as it goes down. Therefore, when at least the water flowing down the bridge bottom wall 6 reaches the guide surface 11a of the lower running water guide 11 at the lower end thereof, the water is distributed to the left and right by the swelling guide surface 11a and gradually becomes closer to the side walls 7, 7 on both sides. It is set up so that it can be collected at the inner corner side.
[0029]
Here, in order to cause the guide surface 11a of the lower running water guide 11 to exhibit the same function as described above, for example, the guide surface 11b itself may have a triangular shape as shown in FIG. As described above, the beads 11d may be formed in a V-shape on the flat guide surface 11c (however, in FIGS. 4 and 5, the bead-shaped guide 12 similar to that in FIG. 2 is not shown).
[0030]
On the other hand, as shown in FIGS. 2 and 3, the side walls 7, 7 on both sides are defined as starting points at the positions where the inner corners formed by the lower running water guide 11 and the side walls 7, 7 end. A bead-shaped guide 12 having an extremely small cross section is formed on the guide surface 11a of the guide 11 (however, the bead-shaped guide 12 is not shown in FIG. 1 in order to avoid complicating the drawing). The bead-shaped guide 12 is set so that the water collected at the inner corner formed between the side walls 7 on both sides by the bulging guide surface 11a flows down to the upper running water guide 10 below. Therefore, as shown in FIGS. 2 and 3, the end position of the bead-shaped guide 12 is, as shown in FIGS. It is desirable to be in the wrapped position.
[0031]
Therefore, according to the structure of the lower sash 2 as described above, water flowing down from the upper side using the lower sash 2 itself as a flowing water channel is dripped from the lower running water guide 11 at the lower end of the bridge bottom wall 6 and the lower bridge bottom is provided. The water is received by the upper running water guide 10 on the wall 6, and by repeating such behavior several times, the water is guided to a position below the lower sash 2 and drained. More specifically, as shown in FIGS. 2 and 3, the water flowing down the bridge bottom wall 6 is positively directed to the inner corners formed by the side walls 7 on both sides by the guide surface 11 a of the lower running water guide 11. In addition to the water being directly dropped from the lower running water guide 11 to the upper running water guide 10 side, much water is also beaded from the inner corner formed by the guide surface 11a and the side walls 7, 7 to the lower bead. It is guided along the shape guide 12 to the lower bridge bottom wall 6. Therefore, the lower sash 2, particularly the bridge bottom wall 6, sufficiently functions as the flowing water channel D, and water does not leak from the open window 8 existing between the bridge bottom walls 6, 6. As shown in FIG. 10, the door lock actuator 31 disposed close to the lower sash 2 can be protected from getting wet. In addition, since the lower running water guide 11 is bent so as to be directed to the inside of the channel-shaped space, even if the door glass falls down, the end face of the door glass remains on the bridge bottom wall 6 of the sash body 3. There is no such thing as being directly contacted and getting caught.
[0032]
FIGS. 6 and 7 show a second embodiment of the present invention. However, parts common to the first embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals.
[0033]
In the lower sash 22 of the second embodiment, the glass guides 9 curved in an arc shape are alternately formed on the side walls 7, 7 on both sides of the sash body 23 having a channel-like cross section so as to form a so-called staggered arrangement. On the other hand, on the bottom wall portion 16, opening windows 18 are formed alternately on one of the right and left sides so as to have the same arrangement as the respective glass guide portions 9. Thereby, continuity in the longitudinal direction of the bottom wall portion 16 itself is secured in advance. Further, a dam bead 13 which is one step higher is provided at the periphery of each opening window portion 18 so as to surround the opening space, and a portion of the bottom wall portion 16 other than the opening window portion 18 functions as a flowing water channel D. It is set to do.
[0034]
Therefore, according to the second embodiment, even if the opening window portion 18 is formed in the lower sash 22, the bottom wall portion 16 itself has the continuity in the up-down direction in advance. , The water flows down along the bottom wall portion 16 while meandering as shown by the symbol W in FIG. Therefore, similarly to the first embodiment, it is possible to prevent water leakage from the middle of the lower sash 22 and to prevent the door lock actuator 31 (see FIG. 10) from getting wet due to the water leakage.
[0035]
Here, as shown in FIGS. 7 and 8, if the dam bead 13 is formed on the bottom wall 16, a meandering groove 25 is formed in advance so as not to interfere with the dam bead 13, that is, along the water flow W. Since the water flows around the groove 25, there is an advantage that the flowing water performance or drainage is further improved.
[0036]
FIG. 9 shows a third embodiment of the present invention. As is clear from comparison with the second embodiment shown in FIGS. While the downstream side of the dam bead 13 is partially cut off and opened to the flowing water channel D side, the lower edge of the window-like opening 18 corresponding to the dam bead missing portion is bent to the outside of the channel-shaped space, and FIG. A lower running water guide 20 similar to that shown in FIG.
[0037]
According to the third embodiment, the same effect as that of the second embodiment can be obtained by the presence of the dam bead 13, and the lower running water guide 20 allows the rear side of the bottom wall 16 to be flushed. When water flows, there is an advantage that the water can be received by the lower flowing water guide 20 and guided to the original flowing water channel D side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lower sash alone showing a first embodiment of the present invention.
FIG. 2 is an enlarged perspective view of a main part of FIG.
FIG. 3 is a vertical sectional view of a main part of FIG. 1;
FIG. 4 is a perspective view showing a modification of FIG. 2;
FIG. 5 is a perspective view showing another modification of FIG. 2;
FIG. 6 is a perspective view of a lower sash alone showing a second embodiment of the present invention.
FIG. 7 is a front view of a main part of FIG. 6;
8 is a view showing a modification of FIG. 7, and is a cross-sectional view taken along line AA of FIG. 7;
FIG. 9 is an essential part perspective view showing a third embodiment of the present invention.
FIG. 10 is an explanatory view of a front door of an automobile.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Front door 2 ... Lower sash 3 ... Sash main body 6 ... Bridge bottom wall 7 ... Side wall 8 ... Window-like opening 9 ... Glass guide 10 ... Upper running water guide 11 ... Lower running water guide 11a ... Guide surface 11b ... Guide surface 11c Guide surface 12 Bead guide 13 Dam bead 16 Bottom wall 18 Window opening 20 Lower running water guide 22 Lower sash 23 Sash body D Flowing channel

Claims (9)

A resin lower sash that is disposed inside a car door and guides and supports a door glass so that the door glass can be raised and lowered,
At the opening edges of the pair of side walls facing each other in the channel-shaped sash body, glass guides projecting inward of the channel-shaped space are formed at predetermined intervals along the longitudinal direction,
A bridge bottom wall portion and an opening window portion connecting the side wall portions are alternately formed along the longitudinal direction in a portion corresponding to the bottom portion of the sash body,
A lower running water guide pointing inward of the channel-like space is formed at a lower end portion of the bridge bottom wall portion, and an upper running water guide pointing outward of the channel-like space is formed at the upper end portion of the bridge bottom wall portion. Lower sash structure for automotive doors. 2. The lower sash structure for an automobile door according to claim 1, wherein glass guide portions are formed on the opening edges of the pair of side walls so as to face each other at positions corresponding to the opening windows. The relative positions of the lower running guide and the upper running guide, which are located above and below the opening window, show that both running guides overlap each other in the vertical direction when the lower sash is properly attached to the car door. The lower sash structure for a vehicle door according to claim 1, wherein the lower sash structure is set to perform the following. The lower flow guide is formed by bending the lower end of the bridge bottom wall inward into the channel-like space, and the upper flow guide is formed by bending the upper end of the bridge bottom wall outwardly of the channel-like space. age,
4. The lower sash structure of an automobile door according to claim 3, wherein each of the running water guides has a wedge shape whose thickness gradually decreases toward its tip. The vehicle door according to claim 4, wherein the shape of the guide surface of the lower running water guide is such that the flow of water is directed downward to an inner corner formed between the side wall portions on both sides. Lower sash structure. 6. The lower sash structure for an automobile door according to claim 5, wherein a bead-shaped guide that is continuous with the lower running water guide is formed on the side wall portion. A resin lower sash that is disposed inside a car door and guides and supports a door glass so that the door glass can be raised and lowered,
At the opening edges of the pair of side walls facing each other in the channel-shaped sash body, glass guides projecting inward of the channel-shaped space are formed at predetermined intervals along the longitudinal direction,
While maintaining the continuity in the longitudinal direction as the bottom wall on the bottom wall of the sash body, the opening windows are formed in a zigzag pattern so that they are staggered along the longitudinal direction,
A dam bead is formed around each open window to surround the window space.
A lower sash structure for an automobile door, wherein a portion of the bottom wall other than the opening window portion is formed as a continuous waterway in a longitudinal direction. A glass guide portion is formed at an opening edge of each side wall portion at a position corresponding to the opening window portion, so that the arrangement of the glass guide portions on both side wall portions is alternately formed so as to be staggered. The lower sash structure of an automobile door according to claim 7, wherein: While the bead on the lower end side of each opening window is locally cut off to open the window space to the running water channel side,
9. The lower sash structure for a vehicle door according to claim 7, wherein a lower running water guide is formed by bending a lower edge of each opening window outwardly of the channel-shaped space.

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