JPH0423067Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention can be applied to weather strips for mounting door mirrors on vehicles and the like.

[Prior Art] Recently, door mirrors that are attached to the doors of vehicles have been provided. As shown in FIG. 7, which is a cross-sectional view, the weather strip attached to this door mirror consists of two weather strips located parallel to each other and spaced apart from each other.
The main components are an insert part 52 made up of two triangular side plates 50 and 51, and a rubber molded body 53 that substantially covers the two side plates 50 and 51. To form the weather strip having such a structure, as shown in FIG. The company plans to use this to mold weather strips for attaching door mirrors.

However, during molding, the side plate 5 of the insert part 52
It may be deformed or deviated from the normal position due to the molding pressure of 0 and 51. As a result, the lip-shaped seal portion 56 of the rubber molded body 53 opens beyond its normal position or becomes wavy, resulting in a problem in which the sealing performance against rainwater and noise deteriorates.

In order to suppress deformation of the side plates 50 and 51 due to molding pressure, a support pin 58 is provided between the insert portion 52 and the mold 59 as shown by the two-dot chain line in FIG. It is also conceivable to load rubber into the cavity 55. However, when the support pin 58 is provided, the side plates 50 and 51
Although the deformation of the rubber molded body 53 can be suppressed, the portion of the molded rubber body 53 corresponding to the support pin 58 becomes a space, and there is a risk that the rubber of the rubber molded body 53 may peel off from the space due to changes over time. Furthermore, the support pins 58 make the work of separating the rubber molded body 53 and the mold 59 after molding extremely difficult.

[Purpose of the invention] The present invention has been made in order to overcome the above-mentioned problems. The object of the present invention is to provide a weather strip for attaching a door mirror that can suppress deformation of the side plate of the insert portion during molding of the rubber molded body without using support pins.

[Summary of the invention] The weather strip for attaching door mirrors of the present invention has an insert part composed of two triangular side plates that are integrally connected at one side of the triangle and are spaced apart from each other and located in parallel. parts and
A rubber molding having a seal portion that substantially covers the two side plates of the insert portion and extends from the side of each side plate corresponding to at least one other side of the triangle, and is formed so that the tips thereof are close to each other. The two side plates each protrude inwardly on surfaces facing each other, and come into contact with the mold surface to clamp the mold during molding of the rubber molded product, and also reduce the distance between the mold surface and the side plate. It is characterized by having at least one protrusion that restricts the

[Detailed description of the structure of the invention] The weather strip for mounting a door mirror of the invention has a strength member and a rubber molded body as main components.

The strength member, which is a component of the present invention, is a member that provides the necessary strength to the weather strip for attaching the door mirror, and is therefore generally made of metal. The strength member has an insert portion that is inserted into the rubber molded body and functions as a core material of the rubber molded body. Furthermore, it may have an engaging portion for attachment to a vehicle door, if necessary.

The insert part consists of two triangular side plates. The side plate has a triangular shape because the weather strip W of the present invention is attached to the triangular part of the door of a vehicle, etc., as shown in FIG. These two side plates are integrally connected at one side of the triangle and are located parallel to each other with a distance between them.

The rubber molded body, which is the main component of this invention, is
This is a member to ensure sealing performance as a weather strip. Therefore, the rubber molded body substantially covers the two side plates of the insert part,
It has a seal part. The sealing portions extend from the sides of each side plate corresponding to at least one other side of the triangle, and their tips are close to each other to ensure good sealing.

The two side plates, which characterize the present invention, each have a protrusion protruding inward on their opposing surfaces. Due to the hook elasticity of the side plate, this protrusion has the function of coming into contact with the mold surface of the mold during molding of the rubber molded product. That is, when the insert portion is set in the cavity of the mold, the protrusion directly contacts the mold surface of the mold. By forming a protrusion on the side plate that comes into contact with the surface of the mold during molding of a rubber molded product, it is possible to prevent the insert from being deformed by the molding pressure or shifting from its normal position during molding of the rubber molded product. Can be suppressed. Furthermore, if a slight recess is provided in the mold corresponding to the protrusion, the reinforcing member will be further prevented from shifting from its normal position during molding.

The protrusion can be formed by commonly used means. For example, the protrusion may be formed by partially bulging a predetermined portion of the side plate by press working. Alternatively, the protrusion may be formed by bending the entire side plate. The number of protrusions, the shape of the protrusions, the size of the protrusions, and the position at which the protrusions are provided are variously selected depending on the type of weather strip, the size and shape of the side plate, the material of the rubber molded body, etc. For example, the number of protrusions provided on each side plate may be one or more. Further, the protrusion may be a hemispherical protrusion or a protrusion. The protrusion is
It may also have a spherical surface with a large radius of curvature. In this case, more than 50% of the opposing surfaces of the side plates are
The protrusion may have a spherical surface. Further, the protrusion may be formed to have a hemispherical surface with a small radius of curvature. In this case, the diameter of the protrusion is generally 4~
Approximately 8 mm is good. In this case, since the diameter of the protrusion is relatively small, a large number of protrusions can be formed on the side plate.

[Effect of the invention] The two side plates, which are the constituent elements of the weather strip for attaching door mirrors of the invention, each have protrusions on opposing surfaces that protrude inward and come into contact with the mold surface during molding of the rubber molded product. It is formed.

Therefore, during molding of the rubber molded product, the protrusion comes into contact with the mold surface due to the hook elasticity of the side plate, thereby regulating the movement of the side plate. Additionally, the strength of the side panels is increased compared to the conventional model. Therefore, compared to the conventional method, it is possible to suppress deformation of the side plate of the insert portion due to molding pressure during molding of a rubber molded product and to prevent the side plate from shifting from its normal position. Therefore, it is possible to prevent the seal portion from opening further than the normal position or becoming wavy, and it is possible to prevent the sealing performance from deteriorating. Also, problems when installing support pins,
That is, deterioration of molding workability and peeling of the rubber can be suppressed.

[Embodiment] FIGS. 1 to 5 show an embodiment of the present invention. Figure 3 is a side view of the weather strip for attaching the door mirror of this example, and Figure 1 is A-A in Figure 3.
This is a cross-sectional view along the line.

The weather strip for mounting a door mirror of this example is composed of a strength member 1 and a rubber molded body 2. The material constituting the strength member 1 of this example is a steel plate. The material constituting the rubber molded body 2 of this example is nitrile rubber.

The strength member 1 of this example is composed of an insert part 3 and an engaging part 4.

Here, the insert portion 3 is formed from two triangular side plates 5 and 6, as is clear from FIG. 3 and FIG. 4, which is a sectional view of the strength member. As shown in FIG. 4, the side plates 5 and 6 are located parallel to each other with an interval of about 15 mm apart, and as shown in FIG. That is, they are integrally connected at the longest side.

The engaging portion 4 is connected to the other side 6b of the triangular side plate 6.
(FIG. 4) That is, it extends a predetermined length downward from the short side. As a result, the engaging portion 4 is connected to the side plates 5 and 6.
It is integrated with. The engaging portion 4 has a substantially triangular shape as shown in FIG. 3, and has a mounting portion 7 at its lower end. The weather strip for attaching door mirrors of this example is attached to the door of the vehicle via the attachment part 7.

The rubber molded body 2 substantially covers the two side plates 5 and 6 of the insert part 3. Therefore, the cross section of the main part of the rubber molded body 2 has a substantially U-shape as shown in FIG. This rubber molded body 2
A seal portion 10 is formed in the. Seal part 1
0 is one of the side plates 5 and 6 as shown in FIG.
It extends from the third sides 5C and 6C of the triangle.
The seal portion 10, as shown in FIG.
They are formed so that their tips are close to each other. Note that a window glass for an automobile door is inserted into the central space 8 of the rubber molded body 2.

The two side plates 5 and 6 that characterize this example include:
Projections 9 projecting inward are formed on the surfaces facing each other. The protrusion 9 in this example is formed by bulging the side plates 5 and 6 so as to have a hemispherical shape. A plurality of protrusions 9 are formed on the side plates 5 and 6, as shown in FIG.

Reference numeral 12 denotes a mold used for molding the weather strip for attaching the door mirror of this example.
This mold 12 has a cavity 13, and a first mold 14 that is cut in different directions.
It is divided into a second mold 15 and a third mold 16.

In order to mold the weather strip for mounting a door mirror of this example, first, the mold 12 is clamped so that the two side plates 5 and 6 of the insert portion 3 are positioned within the cavity 13. In this state, the protrusion 9 is in contact with the mold surface 16a of the third mold 16. In this case, the protrusion 9 is in point contact with the mold surface 16a. In the above state, rubber is loaded into the cavity 13 through an injection hole (not shown). As the rubber injection pressure, a commonly used pressure can be used.

After loading the rubber, the mold 12 is opened,
We have now completed the molding of the weather strip for attaching door mirrors.

In this case, since the protrusions 9 are formed on the two side plates 5 and 6 of the insert part 3, the strength of the side plates 5 and 6 is increased. Therefore, even if the rubber molding pressure is high, the side plates 5 and 6 can be prevented from being deformed by the molding pressure without using the conventional support pins 58. Furthermore, in the molded weather strip for attaching door mirrors, the position of the strength member 1 does not deviate from its normal position. Therefore, it is possible to prevent the seal portion 10 from opening more than its normal position or becoming wavy, and it is possible to eliminate problems such as poor sealing performance against rainwater and noise. In this example, the protrusion 9 is in point contact with the mold surface 16a of the third mold 16 during molding. Therefore, in the manufactured weather strip, no space is formed in the portion corresponding to the support pin 58. Therefore, compared to the case where the support pin 58 is provided, peeling of the rubber of the rubber molded body 2 can be suppressed.

FIG. 6 is a sectional view of the main parts of a weather strip for attaching a door mirror according to another embodiment of the present invention. In this example, the protrusions 21 formed on the side plates 19 and 20 of the insert portion 18 have spherical surfaces with a large radius of curvature. Therefore, the side plates 19 and 2
More than 50% of the opposing surfaces of the protrusion 21 are made up of the spherical surface of the protrusion 21. In the case of this example as well, almost the same effects as in the above-mentioned embodiment are achieved.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a sectional view of the main part of the weather strip, and Figure 2 showing the insert section set in the mold. A sectional view, Fig. 3 is a front view of a weather strip made up of a strength member and a rubber molded body, Fig. 4 is a vertical side view of the strength member, and Fig. 5 is a weather strip for attaching a door mirror. FIG. FIG. 6 shows another embodiment of the present invention, and is a sectional view of the main part of the weather strip. FIG. 7 is a cross-sectional view of the main part of a conventional weather strip for attaching a door mirror, and FIG. 8 is a cross-sectional view of the insert portion of the conventional weather strip for attaching a door mirror set in a mold. In the figure, 1 is a strength member, 2 is a rubber molded body, 3 is an insert part, 4 is an engaging part, 5 and 6 are side plates, 19
and 20 are side plates, and 9 and 21 are protrusions.

Claims (1)

[Claims for Utility Model Registration] (1) A strength member having an insert portion consisting of two triangular side plates that are integrally connected at one side of the triangle and positioned parallel to each other with a distance between them, and the insert portion. a rubber molded body that substantially covers the two side plates and extends from a side of each of the side plates that corresponds to at least one other side of the triangle, and has a seal portion formed such that the tips thereof approach each other. The two side plates each protrude inwardly on surfaces facing each other, and at least one of the side plates contacts the mold surface to clamp the mold and regulates the distance between the mold surface and the side plate during molding of the rubber molded product. A weather strip for attaching door mirrors that is characterized by having one protrusion. (2) The weather strap for attaching a door mirror according to claim 1, wherein the protrusion has a spherical surface with a large radius of curvature, and 50% or more of the opposing surface of the side plate is constituted by the spherical surface of the protrusion. Rip. (3) The weather strip for attaching a door mirror according to claim 1 of the utility model registration claim, wherein the protrusion is a protrusion.