JP2000301946A - Lower part sash structure for door glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce weight of an automobile assembled with a lower part sash, by molding a sash body of a synthetic resin to reduce its weight compared with metal-made one. SOLUTION: Guide pieces 2 of which each is formed with a slide-holding face 3 composed of a flexible material comprising another material different from a sash body 11 is projected in portions abutting to inner and outer faces of a door glass from a groove side wall inner face of the sash body 11 made of a synthetic resin P having groove-shaped cross-section, in this lower part sash 11 assembled inside a door panel of an automobile to hold both front and rear edge parts of the elevatable door glass to guide its going-up and -down movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower sash structure that is assembled inside a door panel of an automobile and holds the front and rear edges of the door glass and guides the vertical movement of the door glass.

[0002]

2. Description of the Related Art A description will be given with reference to FIGS. Conventionally, as shown in FIG. 3, a metal-made sash main body is mounted on the inside of a door panel 20 of an automobile and has a groove-shaped cross-section lower sash for holding the front and rear ends of the door glass 21 and guiding the ascending and descending movement thereof. TPE, EPDM, PV inside 31
4 and 5, a guide convex portion 42 is integrally formed with a sash body 41 made of synthetic resin P, and the guide convex portion 42 is Some are designed to come into contact with the inner and outer surfaces.

However, the lower sash 3 made of metal M
0 is not preferable because the weight increases. In addition, depending on the structure of the door panel 20, the shape of the glass run of the lower sash portion L and the glass run of the center pillar portion H in FIG. 2 may be different, so that a special molding process for connecting both glass runs is required, and There is a problem that the cost increases.

As shown in FIGS. 4 and 5, a lower sash 40 in which a sash main body 41 and a guide projection 42 are integrally formed of synthetic resin P is lighter, but the door glass 21 is lowered. At one time, there is a problem in that the contact and separation between the guide projection 42 and the door glass 21 are repeated due to vibration, and an abnormal noise is generated.

[0005]

The problem to be solved is that the conventional lower sash 30 made of metal M increases the weight of the automobile and, depending on the structure of the door panel 20, the glass run and the center pillar of the lower sash portion L. The shape of the portion H may be different from the shape of the glass run, and a special forming step for connecting the two glass runs is required, which increases the production cost. Further, the lower sash 40 made of synthetic resin is provided between the guide projection 42 and the elevating glass 21,
It is to make noise.

[0006]

Means for Solving the Problems FIGS. 1, 2 and 6
This will be described with reference to FIGS. The lower sash structure of the vehicle door glass according to the present invention is a lower sash that is assembled inside the door panel 20 of the vehicle and holds the front and rear edges of the elevating door glass 21 to guide the elevating movement of the door glass 21; Door glass 2 on the inner surface of the inner side wall of the lower sash body 11 made of synthetic resin P and having a groove-shaped cross section.
A sliding holding surface 3 made of a soft material S, which is made of a different material different from the sash main body, at a portion contacting the inner and outer surfaces of the sash main body 1
The guide piece 2 having the following is protruded.

[0007]

FIG. 6 and FIG. 7 show an embodiment of the present invention. The lower sash 10 is assembled inside the door panel 20 of the vehicle, and holds the front and rear edges of the elevating door glass 21 to guide the elevating movement of the door glass 21. The sash main body 11 is formed of a hard synthetic resin P and formed in a groove shape in cross section, and a different soft portion different from the sash main body 11 is provided at a portion of the interior side wall and the inside of the side wall of the vehicle that abuts on the inner and outer surfaces of the door glass 21. A plurality of guide pieces 2 having a sliding holding portion 3 made of a material S are provided in a protruding manner. Examples of the soft material S include, but are not particularly limited to, a thermoplastic elastomer, solid rubber, and a soft resin. Further, a sliding layer may be provided on those surfaces.

FIG. 7 and FIG. 9 show an embodiment in which the entire guide piece 2 is made of a soft material S. The guide piece 2 is divided into a base part 2a and a surface part 2b, and the base part 2a of the guide piece 2 is integrally molded with the same material P as the sash body 11, and a surface made of another soft material on the surface side of the base part 2a. Part 2b
Is an embodiment shown in FIGS. 8 and 10. FIG.

When attaching another soft material S to the synthetic resin P, the embodiment shown in FIGS.
Further, there is a case where a soft material S is molded later on a synthetic resin P which has been made in advance. In the case of simultaneous molding, there are molding by molding and means for cutting and removing unnecessary portions Z after simultaneous extrusion molding.

9 and 10, a soft material S is attached to a synthetic resin P by a clip portion 14. FIG.

The operation will be described. Since the lower sash 10 for guiding the elevating door glass according to the above-described embodiment has the lower sash main body 11 formed of the synthetic resin P,
Lightweight compared to metal. Therefore, the weight of the vehicle to which the lower sash 10 is assembled can be reduced. Also, the lower sash 10 does not require glass runs.

Further, the lower sash 10 has a slide holding member in which at least a portion of the guide piece 2 which comes into contact with the door glass 21 is made of a soft material S which does not generate abnormal noise when hitting the door glass 21. Since the surface 3 is used, vibration is applied in a state where the door glass 21 is lowered, and even if the door glass 21 and the guide piece 2 collide, no abnormal noise is generated.

[0013]

According to the present invention, since the sash main body 11 is formed of a synthetic resin, it can be made lighter in weight than a metal sash, and the automobile to which the lower sash 10 is assembled can be made lighter. it can. Also, this lower sash 10
Since no glass run is required, production costs can be reduced.

Further, the lower sash 10 has a sliding holding surface made of a material S which is at least a portion of the guide piece 2 which is in contact with the door glass 21 so as not to generate abnormal noise when the door glass 21 is hit. Since it is 3, vibration is applied in a state where the door glass 21 is lowered, and even if the door glass 21 and the guide piece 12 collide, no abnormal noise is generated.

[Brief description of the drawings]

FIG. 1 is a side view of an automobile.

FIG. 2 is a perspective rear view of a door of an automobile.

FIG. 3 is a partial perspective view of a lower sash in a conventional example viewed from below.

FIG. 4 is a partial perspective view of a lower sash in another conventional example viewed from below.

5 is a partial cross-sectional view of the lower sash of FIG. 4 cut along a plane parallel to a groove bottom wall and viewed from the front.

FIG. 6 is a schematic perspective view of the lower sash according to the first to fourth embodiments of the present invention as viewed from below the groove opening.

FIG. 7 shows the first embodiment of the present invention, and is a partial cross-sectional view of the lower sash cut from a plane parallel to a groove bottom wall and viewed from the front.

FIG. 8 is a diagram corresponding to FIG. 7, showing a second embodiment of the present invention.

FIG. 9 is a diagram corresponding to FIG. 7, showing a third embodiment of the present invention.

FIG. 10 is a diagram corresponding to FIG. 7, showing a fourth embodiment of the present invention.

[Explanation of symbols]

 2 Guide piece 2a Base 2b Surface 3 Sliding holding surface 10 Lower sash 11 Sash body 14 Clip part 20 Door panel 21 Elevating glass 30 Lower sash 31 Sash body 32 Glass run 40 Lower sash 41 Sash body 42 Groove side wall guide convex part M Metal P Synthetic resin Q Thermoplastic elastomer S Another soft material

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Fukushima F-term (reference) in Nishikawa Rubber Industries Co., Ltd. 2-2-8, Mishino-cho, Nishi-ku, Hiroshima-shi, Hiroshima 3D127 AA15 AA19 BB01 CB05 CC05 EE16

Claims (1)

[Claims] 1. A lower sash, which is assembled inside a door panel (20) of an automobile and holds both front and rear edges of an ascending and descending door glass (21) to guide the ascending and descending movement of the door glass (21), and is made of synthetic resin. A different material and a soft material different from the sash body (11) are applied to portions of the sash body (11) having a cross-sectional groove shape in contact with the inner and outer surfaces of the door glass (21) on the indoor side and the inside of the groove side wall on the vehicle outside. A lower sash structure of a door glass for an automobile, wherein a guide piece (2) having a sliding holding surface (3) is provided so as to protrude.