JPH09156373A - Lower sash structure of automotive door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make guide pieces easy to be attached to a lower sash main body and reduce the amount of material of guide pieces. SOLUTION: This lower sash structure is placed below a belt line within a door panel and has a sliding groove 34 for sliding door window glass. The lower sash structure includes a lower sash main body 30 made from a resin and guide pieces 40. A plurality of mounting parts 35 are formed on both sides of each side wall part 33 of the lower sash main body 30, and the guide pieces 40 are held in the mounting parts 35. Each of the guide pieces 40 has a sliding surface that slides against the door window glass.

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 for an automobile door, which is attached to the inside of a door panel and slides a door window glass.

[0002]

2. Description of the Related Art A lower sash is attached to the inside of the lower portion of an automobile door panel. The lower sash is disposed below the belt line, and guides the front and rear side edges of the door window glass when the door window glass is opened and closed, following the glass run on the upper portion of the door panel. As this kind of lower sash,
DESCRIPTION OF RELATED ART Conventionally, what was formed with resin for the purpose of aiming at weight reduction etc. is known.

FIG. 10 is a perspective view showing a guide portion of a lower sash according to a conventional technique. The lower sash guide portion 100 includes a resin base material 102 and a plurality of guide pieces 104 (sliding members) provided upright on the resin base material 102. The guide piece 104 is a door window glass WG.
Are arranged in two rows at intervals slightly wider than the thickness of the door window glass WG.

However, in the conventional guide portion 100, when the door window glass WG vibrates during traveling on a rough road, a tapping sound is produced between the door window glass WG and the guide piece 104 when the door window glass WG slides. There may be a sliding noise between and.

Further, as another conventional lower sash, there is JP-A-7-257510. FIG. 11 is a perspective view showing this lower sash. The lower sash 120 is
The lower sash main body 122 is made of metal and has a U-shaped cross section, and lips 124 and 124 fixed to the tip ends of the side walls 122a and 122a of the lower sash main body 122, respectively. The lip portions 124, 124 are formed over the entire length of the lower sash main body 122, and are bonded to the lower sash main body 122 with an adhesive or fixed by caulking or a jig. This lower sash 12
At 0, the door window glass WG is slid between the lip portions 124, 124.

However, in this lower sash 120, since the lower sash main body 122 is formed of a metal material, the attachment to the lip portions 124, 124 must be done by an adhesive or the like, which is troublesome. There has also been a demand to reduce the cost by reducing the amount of materials such as rubber and resin of the lip portions 124, 124 themselves.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is easy to attach the sliding member to the lower sash body, and the rubber or resin used for the sliding member can be used. An object is to provide a lower sash structure for an automobile door that can reduce the amount of material.

[0008]

DISCLOSURE OF THE INVENTION Means for Solving the Problem and Its Action / Effect The present invention, which has been made to solve the above problem, is arranged inside a door panel and below a belt line to slide a door window glass. In a lower sash structure for an automobile door having a sliding groove, a resin lower sash main body having a base portion and side wall portions standing upright from both sides of the base portion and forming the sliding groove together with the base portion, and a lower sash. The plurality of mounting portions formed on both sides of the side wall portion of the main body and the sliding surface for sliding the door window glass, and the plurality of mounting portions with the sliding surfaces facing the sliding groove side. And a plurality of sliding members that are respectively mounted on the parts.

A lower sash structure for an automobile door includes a lower sash body disposed below a belt line inside a door panel, and a door window glass is slid in a sliding groove of the lower sash body. The lower sash main body forms a sliding groove from the base portion and the side wall portion, and the side wall portion is provided with a plurality of mounting portions. In the mounting part,
A sliding member is attached. The sliding member is provided so that its sliding surface faces the sliding groove side, and smoothly slides the door window glass, and does not generate vibration noise or noise at the time of sliding. Moreover, since the plurality of sliding members are individually mounted on the mounting portion and are not provided over the entire length of the lower sash body, the amount of material can be reduced.

Further, since the tapered surface is provided at the upper end of the sliding member, the tapered surface relieves the force at the time of contact with the lower end of the door window glass when the door window glass descends. There is no need to increase the mounting strength when mounting the member to the mounting portion, and the mounting work becomes easy.

[0011]

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 a side view showing an automobile door according to an embodiment of the present invention. In FIG. 1, a vehicle door panel 10 is provided with an upper sash 12 and a lower sash 14. Upper sash 12
Is mounted above the belt line BL, and is equipped with a glass run (not shown) that enhances slidability and sealability with the door window glass WG. Also, lower sash 1
4 are fixed to the front and rear inner sides of the door panel 10 below the belt line BL, respectively.

FIG. 2 is a perspective view showing the vicinity of the lower sash 14. Lower sash 14 is lower sash body 30
And a guide piece 40 as a sliding member mounted on the lower sash main body 30 in large numbers, and the lower sash main body 30 is fixed to the door panel 10 via a mounting portion (not shown).

The lower sash body 30 is an elongated frame body having a U-shaped cross section formed by injection molding of resin, and has a base portion 32 and side wall portions 33 provided upright from both sides of the base portion 32. The sliding groove 34 is formed by the base portion 32 and the side wall portion 33. The resin material of the lower sash body 30 may be a material having a strength capable of supporting the sliding of the door window glass WG, and for example, polypropylene (PP) or polyamide (PA) whose strength is increased by containing glass fibers. Etc. can be used.

Further, the side wall portion 33 of the lower sash body 30.
A plurality of mounting portions 35 having the same shape are formed on both outer sides of the same symmetrically and at substantially equal intervals. FIG. 3 is a perspective view showing a state in which the guide piece 40 is mounted on the mounting portion 35, and FIG. 4 is a perspective view showing a state before the guide piece 40 is mounted on the mounting portion 35.

Each mounting portion 35 includes a holding arm portion 35a,
The side wall portion 33 is provided with a retaining projection 35b protruding from the outer surface thereof. The holding arm portion 35a has a sidewall portion 33 at one end.
Is a cantilevered state that is extended from the side surface and has a free end at the other end. A space surrounded by the inside of the holding arm portion 35a and the side wall portion 33 is a mounting space 35c for holding the guide piece 40, and between the free end of the holding arm portion 35a and the retaining projection 35b. Is a guide piece 4
There is an insertion gap 35d for mounting 0.

The guide piece 40 is mounted on each of the plurality of mounting portions 35 to smoothly guide and slide the door window glass WG, and is extruded with the same cross section. It is cut into a predetermined length. The guide piece 40 includes a mounting base 42 and a mounting base 4
2 and a lip portion 44 formed integrally with each other.
The mounting base 42 is formed to have a width that can be inserted into the mounting space 35c, and has a retaining portion 42a formed at one end thereof. The retaining portion 42a comes into contact with the lower surface of the holding arm portion 35a to retain the guide piece 40 in the direction of arrow a.

Further, the lip portion 44 is arranged toward the center of the sliding groove 34 in which the door window glass WG slides, and the surface lubricant 46 is provided at the portion in contact with the door window glass WG. Door window glass W applied
Sliding with G is improved. As the surface lubricant 46, urethane, silicon, or the like can be used. In addition, if it is a means for improving slidability with the door window glass WG,
Instead of the surface lubricant 46, flocking or the like may be used. Further, as shown in FIG. 5, a taper portion 44a is formed on the upper end surface of the lip portion 44 by cutting the extruded body into a predetermined length and then cutting the end surface by post-processing. The taper portion 44a is for preventing the guide piece 40 from coming off when coming into contact with the lower end portion of the door window glass WG as described later. As the material of the guide piece 40, a material generally used as a weather strip,
That is, rubber or a soft resin can be used. For example, ethylene propylene diene ternary rubber (EPDM)
Can be applied.

In order to mount the guide piece 40 on the mounting portion 35 of the lower sash body 30, the insertion gap 35d between the free end of the holding arm portion 35a and the retaining projection 35b is widened, and the insertion gap 35d is inserted through the insertion gap 35d. Mounting base 4 of guide piece 40
Push in 2. As a result, the mounting base portion 42 of the guide piece 40 is gripped by the holding arm portion 35a in the mounting space 35c of the mounting portion 35. At this time, the guide piece 40
The retaining portion 42a is prevented from coming off in the direction of the arrow a by contacting the retaining arm portion 35a, and the narrow insertion gap 35 between the retaining arm portion 35a and the retaining protrusion 35b is prevented.
The d is prevented from coming off in the arrow direction b.

The lower sash structure according to the above embodiment has the following effects. (1) Since the door window glass WG moves up and down while being guided by the guide piece 40 attached to the lower sash body 30, the door window glass WG itself does not come into contact with the inner wall surface of the lower sash body 30, and a sound is emitted when moving up and down. Does not occur.

(2) Since the guide piece 40 firmly supports the door window glass WG so as to sandwich the door window glass WG, the door window glass WG is brought into contact with the lower sash body 30 even when running on a rough road. It does not vibrate and no noise is generated.

(3) The guide piece 40 is not provided over the entire length of the lower sash main body 30 and is mounted only in an area necessary for supporting the lifting and lowering of the door window glass WG. The amount of material such as rubber can be reduced as compared with the case where the seal member is provided over the entire length. In addition, arranging the guide piece 40 partially means that the lower sash body 30 is
Since it is arranged inside the door panel 10 and is not exposed to the outside of the vehicle, no problem occurs in the sealing action.

(4) When the guide piece 40 is mounted on the lower sash body 30, if the mounting base portion 42 of the guide piece 40 is pushed into the mounting space 35c of the mounting portion 35, the holding arm portion 35a grips the mounting base portion 42. Therefore, it is not necessary to use an adhesive or caulking as described in the conventional technique, and the mounting workability is excellent. In particular, when EPDM rubber, which does not have good adhesiveness with an adhesive, is used as the material of the guide piece 40, it is not necessary to consider the adhesiveness, so that the wearability can be improved.

(5) The door window glass WG is shown in FIG.
As shown in FIG. 6, the guide piece 40 moves between the descending position and the ascending position, but when rising from the descending position (FIG. 6A), the guide piece 40 is always in contact with the door window glass WG. Although it does not receive a large force such as turning from the door window glass WG, when it descends from the raised position as shown in FIG. 6 (B), the lower end of the door window glass WG hits the upper end portion of the guide piece 40, It is easy to receive a large force that causes it to leave. However, in this embodiment, as shown in FIG. 5, the guide piece 40 has a taper portion 4 at the upper end.
Since it is 4a, it does not receive a large force for dropping it from the lower sash body 30.

(6) As shown in FIG. 2, the holding arm portion 3
Since the insertion gap 35d of 5a is arranged so as to be directed upward, the guide piece 40 is firmly held by the mounting portion 35, and a force (direction of arrow c) for separating the guide piece 40 from the door window glass WG is provided. Even if received, the lower sash body 3
There is no drop from zero.

FIG. 7 shows a guide piece 40 according to the first embodiment.
It is a figure explaining the modification of B. As shown in FIG. 7 (A), the guide piece 40B has the extrusion molded body B for every predetermined length.
The taper portion 44 is for obliquely cutting, and by adopting such an oblique cutting method, the taper portion 44 for preventing the taper portion from falling off.
Ba is formed at the same time when the extruded body B is cut. Therefore, as in the first embodiment, it is not necessary to perform post-processing for forming the tapered portion 44Ba after cutting the extruded body.

FIG. 8 is a perspective view for explaining a modified example of the lower sash body 30C. As shown in FIG. 8, the mounting portion 35C of the lower sash body 30C has a mounting space 35Cc.
It is formed by a loop-shaped holding arm portion 35Ca having. The mounting space 35Cc is formed substantially the same as the mounting base portion 42C of the guide piece 40C. Guide piece 4
To mount 0C, the mounting base 42C is elastically deformed and press-fitted into the mounting space 35Cc, so that the mounting base 42C is held by the holding arm 35Ca. In this modification, the insertion gap 3 is different from that of the first embodiment in FIG.
Since there is no 5d, the holding force of the guide piece 40C can be further increased.

FIG. 9 is a diagram showing a second embodiment.
As shown in FIG. 9, the lower sash main body 30D includes a base portion 32D, a side wall portion 33D, and a mounting portion 35D protrudingly provided inside the side wall portions 33D. Mounting part 35D
Is an L-shaped mounting projection 35 arranged in parallel to the rail shape.
Da is provided, and a space between them is defined as a mounting space 35Dc.

The guide piece 40D is a member having the same cross-sectional area formed by cutting an extruded body made of rubber or soft resin into a predetermined length. The guide piece 40D includes a plate-shaped mounting base 42D that is mounted in the mounting space 35Dc, and a first mounting base 42D that projects from the mounting base 42D.
And second hollow portions 44Da and 44Db. A surface lubricant 46D that enhances slidability with respect to the door window glass WG is applied to the tip ends of the first and second hollow portions 44Da and 44Db.

This guide piece 40D is attached to the lower sash body 3
In order to mount it on 0D, the mounting base portion 42D of the guide piece 40D may be slid into the mounting space 35Dc from the upper side in the drawing, so that the mounting work is further facilitated.

Also, the first and second hollow portions 44Da, 44
Since Db is formed in a tubular shape having a flat cross section, it is not subjected to a large force that causes the guide piece 40 to be detached even when the door window glass WG slides up or down. Therefore, the guide piece 40D is attached to the mounting portion 35D.
Since it does not need to be held by a strong force such as press fitting, it has excellent mountability.

Further, since one guide piece 40D guides to the door window glass WG through the plurality of first and second hollow portions 44Da and 44Db, the guide piece 4 is provided.
The number of 0D itself can be reduced.

The first and second hollow portions 44Da, 44
By making the cross section flat, Db has a large contact area with the door window glass WG and can improve the support performance for the door window glass WG.

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

(1) The mounting portion for attaching the guide piece to the lower sash body may have various configurations. For example, the mounting portion 35D shown in FIG. Good.

(2) As long as the guide piece attached to the lower sash body does not interfere with the guide of the windshield,
The number and arrangement thereof are not particularly limited, and they may be arranged alternately, for example.

[Brief description of the drawings]

FIG. 1 is a side view showing a door using a lower sash structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a lower sash structure according to the present embodiment.

FIG. 3 is a perspective view showing a state where a guide piece 40 is attached to the attachment portion 35 of the lower sash body 30.

FIG. 4 is a perspective view showing a state before the guide piece 40 is attached to the attachment portion 35 of the lower sash body 30.

5 is a perspective view showing a guide piece 40. FIG.

FIG. 6 is an explanatory view for explaining the action of the guide piece 40 accompanying the raising and lowering of the door window glass WG.

FIG. 7 is a guide piece 40 according to a modified example of the first embodiment.
Explanatory drawing explaining B.

FIG. 8 is a perspective view showing a lower sash main body 30C showing a modification of the first embodiment.

FIG. 9 is a perspective view showing a lower sash structure according to a second embodiment.

FIG. 10 is a perspective view showing a guide portion of a lower sash according to a conventional technique.

FIG. 11 is a perspective view showing a lower sash structure according to another conventional technique.

[Explanation of symbols]

 BL ... Belt line WG ... Door window glass 10 ... Door panel 12 ... Upper sash 14 ... Lower sash 30 ... Lower sash main body 30C ... Lower sash main body 30D ... Lower sash main body 32 ... Base part 32D ... Base part 33 ... Side wall part 33D ... Side wall part 34 ... Sliding Moving groove 35 ... Mounting portion 35C ... Mounting portion 35a ... Holding arm portion 35Ca ... Holding arm portion 35Cc ... Mounting space 35D ... Mounting portion 35Da ... Mounting projection 35Dc ... Mounting space 35b ... Detachment projection 35c ... Mounting space 35d ... Insertion gap 40 Guide piece 40B ... Guide piece 40C ... Guide piece 40D ... Guide piece 42 ... Mounting base 42C ... Mounting base 42D ... Mounting base 42a ... Stopping portion 44 ... Lip portion 44a ... Tapered portion 44Ba ... Tapered portion 44Da, 44Db ... First and second Second hollow portion 46 Surface lubricant 46D ... surface lubricant

Claims (2)

[Claims] 1. A lower sash structure for an automobile door, which is provided inside a door panel and below a belt line and has a sliding groove for sliding a door window glass, from a base and both sides of the base. A lower sash body made of resin having a side wall portion standing upright and forming the above-mentioned sliding groove together with the base portion, a plurality of mounting portions formed on both sides of the side wall portion of the lower sash body, and sliding the door window glass Has a sliding surface for
A lower sash structure for an automobile door, comprising: a plurality of sliding members that are respectively mounted on the plurality of mounting portions so that the sliding surface faces the sliding groove side. 2. The vehicle door according to claim 1, wherein a taper surface is provided at an upper end portion of the sliding member, the portion being in contact with a lower end portion of the door window glass when the door window glass is lowered. Lower sash structure.