JP3034380U - Corner bracket - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To improve the durability of a corner bracket on which a door glass slides. SOLUTION: A mold parting line 14 formed on a top center line O of a corner bracket upper side portion 1b,
Only the upper lip 11 is displaced from the center line O.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a corner bracket mounted on a triangular area between a lower window frame of a front door of an automobile and a front door pillar, to which a door mirror is attached.

[0002]

[Prior art]

 Conventionally, this type of corner bracket 1 is mounted in a triangular region at the front end between a lower window frame 3 of an automobile front door 2 and a front door pillar 4, and a door mirror 5 is attached to the outside of the room, as shown in FIG. The corner bracket 1 is formed of an injection-molded body of rubber or elastic resin. As shown in FIGS. 7 and 8, a metal reinforcing member 6 is embedded in the molded body to provide rigidity. A part of the reinforcing member 6 is projected downward to form a leg portion 6a, and the corner bracket 1 is fixed to the door 2 by the leg portion 6a.

The corner bracket 1 has a guide groove 7 (FIG. 8) having a U-shaped cross section on its rear side portion 1 a (FIG. 7), and the front side portion 8 a of the front door glass 8 is inserted into this guide groove 7. There is. Elastic lips 9, 10, 11 are formed at the open end of the guide groove 7 on the indoor side, the outdoor side and the upper side, and the tips of the lips 9, 10, 11 are elastically brought into contact with the surface of the door glass 8. The door glass 8 slides on the tips of the lips as it moves up and down. This prevents dust, raindrops, and the like from entering the room and the generation of wind noise from the gap between the corner bracket 1 and the door glass 8. The corner bracket 1 having such a structure is manufactured using a mold 12 as shown in FIG. That is, the reinforcing member 6 is inserted between the two molds 12a and 12b, and an elastic material made of rubber or resin is injected and injected through a gate (not shown) to be molded. Reference numeral 13 is a core for forming the guide groove 7. Such a structure is described in, for example, Japanese Patent Publication No. 7-121656.

In the corner bracket 1 having the above-described structure, as shown in FIGS. 10 and 11, in order to surely bring the upper lip 11 into close contact with the upper side portion 8b of the front door glass 8, the curvature of the lip 11 is rounded. It is often set to be smaller than the curvature of the bracket upper side portion 1b. In FIG. 11, the change point P of the curvature is shown, and the top center line of the upper side portion 1b is shown by O. Thus, when the door glass 8 rises and is closed, the front end of the upper side portion 8b of the door glass 8 pushes up the upper lip 11 against its elasticity, and the adhesion between the door glass 8 and the corner bracket 1 is increased. It will improve.

[0005]

[Problems to be solved by the device]

 In the corner bracket 1 as seen in the above publication, the parting line 14 of the mold, that is, the parting line 14 is formed so as to coincide with the top center line O of the upper side 1b of the corner bracket 1 (FIG. 10). Usually, the part where the parting line 14 is formed is often mechanically weak, and if stress concentrates there, there is a problem that it is easy to tear along the line. On the other hand, the upper lip 11 is pushed by the ascending door glass 8 to be deformed, sandwiched between the front door pillar 4 (FIG. 6) and compressed. The stress due to this deformation compression is strongly applied to the central portion of the upper lip 11 where the parting line 14 is located. Therefore, the central portion of the lip may be torn as the door glass 8 is repeatedly opened and closed, and raindrops or dust may enter the room from there. In addition, burrs are often formed on the partitioning line 14 during molding. If the burrs are left on the door, the upper lip 11 is pushed upward by the door glass 8 and the upper surface of the lip 11 is attached to the front door pillar. When it comes into contact with the weather strip of No. 4, there arises a problem that a sufficient sealing property cannot be obtained.

The present invention has been made to solve the above problem, and provides a corner bracket that improves the durability of the upper lip and achieves a higher sealing action.

[0007]

[Means for Solving the Problems]

 The present invention is mounted in a triangular area between a lower window frame of an automobile front door and a front door pillar, has a door mirror mounted on the outside of the room, and has a guide groove in which a front portion of the front door glass slides. , A corner bracket made of a resin or rubber injection-molded body having elastic lips that come into contact with the front door glass at the inner, outer and upper ends of the guide groove, in conformity with the shape of the front door pillar. The upper lip, which is the uppermost end of the curved upper side of the bracket and contacts the front end of the upper side of the front door glass when the front door glass rises, is set to a curved line having a curvature smaller than that of the front door pillar. At the same time, the mold parting line formed on the upper side of the bracket is attached to the upper lip. Te are those formed by swaged was unevenly distributed on the indoor side or outdoor side of the bracket upper portion centerline. With such a configuration, the parting line is not located in the central portion where stress is concentrated during deformation of the upper lip, and durability is maintained.

[0008]

【Example】

 In FIGS. 1 and 2, reference numeral 1 denotes a corner bracket having the same function as the above-mentioned corner bracket, which is fixed to the front door by a metal reinforcing member, and a door mirror is attached to the outer surface of the room. The corner bracket 1 is made of an elastic material such as EPDM or PVC / NBR blend rubber, and its hardness (JISA) is set to about 60. Reference numeral 7 is a guide groove in which the door glass 8 slides, and lips 9, 10 and 11 are formed at the open end on the inside and outside of the room and on the upper side as in the above-mentioned example.

Since the upper side 1b of the corner bracket 1 is in close contact with the front door pillar 4 (FIG. 6), its curvature is made to match the curvature of the front door pillar 4, for example, a curved line with a radius of curvature of 2000 to 3000 mm is formed. Has been done. On the other hand, the curvature of the upper lip 11 portion is smaller than this, and is set to a curved line having a radius of curvature of 100 mm, for example. The length of the upper lip 11 is about 20 mm, and therefore the tip of the upper lip 11 is located 2 mm lower than the center line O of the upper side.

A parting line 14 is formed at the center of the top of the upper side part 1b of the corner bracket 1, but only the upper lip 11 part, the parting line 14 is on one side, for example, the inside (or the outside). In the above description, it is assumed to be on the indoor side) (the unevenly distributed portion is indicated by 14a). The size of the uneven distribution from the center line O is width W = 2 mm and length L = 20 mm in FIG. FIG. 3 shows a molding portion of the upper lip 11 of the molding die 12 of the corner bracket 1, and the parting line 14 is displaced toward the indoor side (left side in the figure) only in the upper lip 11 portion. When the parting line 14 is displaced from the central portion which is the top of the corner bracket 1, an undercut portion 15 is formed, and it becomes difficult to open the die 12b to the right in the drawing. Therefore, there is a limit to setting the width W large. If the width W is about 2 mm, the rubber composing the corner bracket 1 can be elastically deformed and pulled out from the mold 12b even if there is some undercut portion.

4 and 5 show a state in which the door glass 8 is lifted to the uppermost position, and the door glass 8 having a thickness of about 5 mm expands the indoor and outdoor lips 9 and 10 and moves the upper lip 11 upward. Push it up to deform it, and press its upper surface against the weather strip fixed to the door pillar 4 (Fig. 6). At this time, the central portion of the upper surface of the upper lip 11 contacts the weather strip, and the portion where the parting line 14 is formed does not contact or the stress applied to it is small even if it contacts.

[0012]

[Effect of the invention]

 According to the present invention, by partitioning the partitioning line located on the upper surface of the upper lip of the corner bracket toward the indoor side or the outdoor side from the position of the center line which is the apex of the upper surface of the corner bracket, the partitioning line portion is formed. It is possible to avoid concentration of stress due to deformation compression, and improve the durability of the upper lip. Even if burrs are left on the parting line of the upper lip, the burrs are displaced from the tops that come into contact with the weather strip, so that the sealing function is not impaired.

[Submission date] August 28, 1996

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

[Means for Solving the Problems]

The present invention is mounted in a triangular area between a lower window frame of a front door of an automobile and a front door pillar, has a door mirror mounted on the outside of the vehicle, and has a guide groove on which a front portion of a front door glass slides. indoor side of the guide groove, indoor lip having a resilient contacting with the front door glass to the outdoor side and the tip of the upper, at the corner bracket made of injection-molded product of resin or rubber having a chamber outer lip and an upper lip, the The upper lip, which is the uppermost end of the upper side of the bracket that is curved to match the shape of the front door pillar, and the front end of the upper side of the front door glass comes into contact when the front door glass rises. A mold par set on the upper side of the bracket with a curved line with a small curvature. Ingurain is made is caused to eccentrically on the indoor side or outdoor side than the bracket upper portion centerline in the upper lip. With such a configuration, the partying line is not located in the central portion where stress is concentrated during deformation of the upper lip, and durability is maintained.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a corner bracket according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of the embodiment.

FIG. 3 is a sectional view of a main part of a mold corresponding to the line AA in FIG.

FIG. 4 is a side view of essential parts showing an operating state of a corner bracket according to an embodiment of the present invention.

FIG. 5 is a front view of essential parts showing the operating state of the corner bracket according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a mounted state of a corner bracket.

FIG. 7 is a front view of a corner bracket according to a conventional example.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

FIG. 9 is a cross-sectional view showing a mold for manufacturing a corner bracket according to a conventional example.

FIG. 10 is a side view of a main part of a corner bracket according to a conventional example.

FIG. 11 is a front view of a main part of a corner bracket according to a conventional example.

[Explanation of symbols]

 1 ... Corner bracket 2 ... Front door 3 ... Lower window frame 4 ... Front door pillar 5 ... Door mirror 6 ... Reinforcing member 7 ... Guide groove 8 ... Door glass 9 ... …… Indoor lip 10 …… Outdoor lip 11 …… Upper lip 12 ………… Mold 13 …… Core 14 ………… Parting line

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[Procedure amendment]

[Submission date] August 28, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (1)

[Utility model registration claims] 1. A guide groove, which is mounted in a triangular region between a lower window frame of an automobile front door and a front door pillar, has a door mirror attached to the outside of the vehicle, and has a front side portion of a front door glass that slides. , Inside the guide groove,
In a corner bracket made of a resin or rubber injection-molded product having elastic lips that contact the front door glass at the outer and upper ends, the uppermost part of the upper side of the bracket that is curved to match the shape of the front door pillar. At the upper end, when the front door glass rises,
The upper lip with which the front edge of the front door glass abuts is set to a curved line having a curvature smaller than that of the front door pillar, and the mold parting line formed on the upper side of the bracket is the upper lip. Corner brackets that are unevenly distributed inward or outward from the center line of the upper side of the bracket