JPH0525298Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a back door garnish for automobiles.

(Prior art and its problems) FIG. 4 shows a perspective view of a conventional back door garnish attached to a back door. In this conventional example, a frame-shaped back door garnish 2 integrally molded with resin is attached to the window periphery of a back door 1 made of a metal material so as to cover this periphery.

However, in the case of the above-mentioned conventional example, since the back door appliance 2 is an integral type, the back door 1
There is a drawback in that the back door appliance 2 tends to be thermally deformed due to the difference in the coefficient of thermal expansion between the back door appliance 2 and the back door garnish 2. In addition, since the mold used to mold the back door garnish 2 becomes larger, productivity not only decreases, but also the direction of the bolt attachment part etc. must be adjusted in consideration of the die cutting process, etc. It is necessary to align the parts uniformly across the back door 1, and for this reason, it is difficult to form the panel on the back door 1 side to which the back door garnish 2 is bolted, and the back door garnish 2 to the back door 1 has to be aligned uniformly.
Problems also arise, such as poor assembly workability.

(Purpose of the invention) This invention was made to solve the above problems, and aims to prevent thermal deformation, improve productivity, and improve the formability of the panel on the back door side and the workability of assembling it to the back door. The purpose of the present invention is to provide a back door garnish for an automobile that can perform the following functions.

(Means for Achieving the Object) The means for achieving the above object is such that the back door garnish of an automobile is installed along the periphery of the window of the back door. The resin molded body is divided into a vertical part along the vertical frame part and a horizontal part along the horizontal frame part, and at the upper end of the vertical part, there is a step part whose surface is lowered one step on the side of the horizontal part. At the same time, a tongue piece having an elongated hole in the extending direction is formed at the tip of the stepped portion, and a tongue piece having an elongated hole in the extending direction is formed on the back side of one end of the horizontal portion. A protrusion is formed that is slidably fitted in the direction, and a bolt that is tightened and fixed to the back door side in the fitted state is embedded in the protrusion, and by the tightening and fixing, the bolt is fixed horizontally. One end of the part is superimposed on the stepped part, and the stepped part is pressed against the back door side in a state where it can freely slide in the extending direction, and in this pressed state, the horizontal part which is superimposed on the stepped part The surface height of the one end portion is substantially the same as the surface height of the upper end portion of the vertical portion where the stepped portion is formed in an extending shape.

(Embodiment) Fig. 1 shows a perspective view of an automobile back door garnish installed on the back door, which is an embodiment of this invention, and Fig. 2 is an enlarged perspective view of section A in Fig. 1. , and FIG. 3 is a sectional view taken along the line B--B in FIG. 2.

This back door garnish 3 has a top part 3a as a horizontal part that is attached almost horizontally along the upper frame part as a horizontal frame part of the window periphery of the back door 4, and a vertical frame part of the window periphery. A right part 3b as a vertical part is attached almost perpendicularly along the right side frame part as a part, and a left part 3 as a vertical part is attached almost vertically along the left side frame part as a vertical frame part of the window peripheral part.
It is divided into three parts (c) and molded with resin.

As shown in FIGS. 2 and 3, the light portion 3b of the back door garnish 3 extends so that its upper end side wraps around the right end of the upper frame portion of the window periphery of the back door 4. A step portion 5 slightly lower than the surface of the light portion 3b is formed on the upper end side of the light portion 3b. Furthermore, a tongue piece 7 having an elongated hole 6 long in the extending direction of the step part 5 for connection with the upper part 3a is integrally molded at the tip of the step part 5, and the elongate hole 6 is located on the side of the back door 4. It is aligned so as to overlap with the bolt insertion hole 8 formed in .

On the other hand, the top part 3 of the back door garnish 3
On the back surface of the right end side of the light portion 3b, a protrusion 9 that is slidably fitted into the elongated hole 6 in the longitudinal direction is integrally molded in a portion facing the elongated hole 6 of the tongue piece 7 of the light portion 3b. A bolt 10 is embedded in a recess 9a formed on the lower surface of the protrusion 9, facing downward. Then, with the protrusion 9 on the top part 3a side fitted into the elongated hole 6 on the light part 3b side, the bolt 10 is inserted into the corresponding bolt insertion hole 8 of the backdoor 4.
, and the right end of the top part 3a is the light part 3.
b, so that the surface of the right end side of the top part 3a and the surface of the upper end side of the light part 3b, where the step part 5 is formed in an extending shape, have continuity.
The respective surfaces are configured to have substantially the same height. Furthermore, a nut 11 is screwed onto the bolt 10 passing through the bolt insertion hole 8 of the back door 4 from the back side of the back door 4, and the top part 3a is tightened and fixed to the back door 4, and at the same time, the top part 3a is tightened. The upper end of the light portion 3b is pressed against the back door 4 by the right end. The light portion 3b facing the right frame portion of the window periphery of the back door 4
At a suitable place on the back surface of the light part 3b, for example, at one place near the bottom of the light part 3b, there is a bolt 1 like the top part 3a.
2 fixed protrusions 13 are integrally molded,
By passing the bolt 12 into the bolt insertion hole 14 formed on the back door 4 side and screwing the nut 15 onto the bolt 12 from the back side of the back door 4, the light portion 3b can be tightened and fixed to the back door 4. It's being measured.

Although the connection structure between the upper part 3a and the left part 3c of the back door appliance 3 is not shown, it is constructed almost the same as the connection between the right part 3b and the upper part 3a, and the left part 3
Tightening and fixing of the light part c to the back door 4 is also carried out in the same manner as in the case of the light part 3b.

This back door appliance 3 has a structure that absorbs deformation at the connection points between the right part 3b and the upper part 3a, and the upper part 3a and the left part 3c. Thermal deformation due to the difference in thermal expansion coefficient of 3 is effectively avoided. That is, regarding the connection point between the top part 3a and the light part 3b shown in FIG. Due to the structure in which the right end of the top part 3a is slidably stacked on the step part 5 of the top part 3b, the top part 3a
Deformation in the longitudinal direction of the light part 3b between the connection point of the light part 3b and the part fixed to the back door 4 by the bolt 12 is absorbed by the relative sliding of the light part 3b and the top part 3a at the connection point. . On the other hand, the deformation in the longitudinal direction of the left part 3c is similarly absorbed at the connection point between the top part 3a and the left part 3c, and the respective deformations of the right part 3b and the left part 3c are absorbed here. As a result, the deformation of the back door appliance 3 as a whole is alleviated,
Thermal deformation of the back door appliance 3 is effectively avoided.

In addition, at the connection point between the top part 3a, the right part 3b, and the left part 3c, the surfaces of the left and right ends of the top part 3a, and the upper part of the right part 3b and the left part 3c where the stepped part 5 is formed in an extending shape. Since the heights of each surface are approximately the same so that the surfaces are continuous, the appearance is not impaired.

Furthermore, at the connection points between the top part 3a, right part 3b, and left part 3c, as shown in FIG. As a result, the accuracy of assembly between each member is improved, and the number of parts such as bolts and nuts required for tightening and fixing can be reduced.

In the above embodiment, the back door appliance 3 is composed of three members: the top part 3a, the right part 3b, and the left part 3c. It is also possible to further provide a down section (not shown) which can be attached to the back door garnish by four members.

(Effect of the invention) As described above, according to the automobile back door garnish of this invention, the entire garnish is divided into a vertical part along the vertical frame of the back door window periphery and a horizontal part along the horizontal frame. The structure is divided into horizontal and vertical parts, and the connection structure allows them to slide freely into each other. This can be prevented by effectively absorbing water at the joints of each member, and the mold used for forming the back door garnish can be downsized, improving productivity. In addition, since each part is molded separately, there is no need to uniformly align bolt mounting parts throughout the entire back door appliance in consideration of the die-cutting process, making it possible to optimize the orientation of each part. It is possible to select and set a suitable orientation, thus improving the formability of the panel on the back door side and the workability of assembling it to the back door. Furthermore, at the connection point between the horizontal part and the vertical part, the surface height of one end of the horizontal part that overlaps the stepped part and the surface height of the upper end of the vertical part where the stepped part is formed in an extending shape are different. Since they are formed at approximately the same height, they do not spoil the appearance. In addition, the upper end of the vertical part is tightened together with a bolt fixed to a protrusion formed on the horizontal part, which improves assembly accuracy between each member and reduces the number of bolts and nuts required for tightening and fixing. This has the advantage of reducing the amount of

[Brief explanation of drawings]

Fig. 1 is a perspective view showing how a back door garnish of an automobile, which is an embodiment of this invention, is attached to the back door; Fig. 2 is an enlarged perspective view of section A in Fig. 1; The figure is a sectional view taken along line B--B in FIG. 2, and FIG. 4 is a perspective view showing a conventional example. 3...Back door garnish, 3a...Top section, 3b...Right section, 3c...Left section, 4
... Back door, 5 ... Step part, 6 ... Long hole, 7
... tongue piece, 9 ... protrusion, 10 ... bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] In a back door garnish for an automobile that is attached along the periphery of a back door window, the back door garnish is attached to a vertical part along a vertical frame part of a periphery of a back door window, and It is made of a resin molded body divided into a horizontal part along the frame part, and at the upper end of the vertical part, a stepped part whose surface is lowered by one step is formed extending toward the horizontal part, and the stepped part A tongue piece having an elongated hole in the extending direction is formed in an extending shape at the tip of the portion, and a protrusion that is slidably fitted into the elongated hole in the longitudinal direction on the back side of one end of the horizontal portion. is formed, and a bolt that is tightened and fixed to the back door side in the fitted state is embedded in the protrusion, and as a result of the tightening and fixing, one end of the horizontal part is overlapped on the step part. The stepped portion is pressed against the back door side in a slidable state in the extending direction, and in this pressed state, the surface height of the one end of the horizontal portion overlaid on the stepped portion and the stepped portion are 1. A back door garnish for an automobile, wherein the surface height of the upper end portion of the vertical portion formed in an extending shape is approximately the same height.