JP2004359131A - Door structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door structure for an automobile capable of realizing cost reduction by reducing the number of parts and the man-hours required for mounting of a carrier plate by providing an opening on an inner panel and insert-molding the carrier plate on the whole of the edge of the opening so as to cover the opening with the carrier plate for supporting an auxiliary machinery of the door (functional part of the door), enhancing rigidity of the inner panel against a structure in which the carrier plate is fixed to the inner panel by a screw and realizing light weight of the inner panel or the whole of the door by enlarging the opening of the inner panel by the part. <P>SOLUTION: The door structure for the automobile is formed by joining an outer panel and the inner panel 3. The opening 6 is provided on the inner panel 3 and the carrier plate 9 made of resin and supporting the auxiliary machinery 15 of the door is insert-molded on the whole of the edge of the opening 6 so as to cover the opening 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an automobile door structure formed by joining an outer panel and an inner panel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as the door structure of the above-mentioned automobile, there is the following.
That is, an opening for mounting a module plate is formed in a portion of the door inner panel corresponding to the door body, and the module plate is attached to the opening using a mounting member such as a pin or a screw so as to cover the opening. It is a thing.
[0003]
In this case, the door inner panel is joined and fixed to the door outer panel in advance, and at least a part of the auxiliary equipment (door functional component) is pre-assembled with the above-mentioned module plate. To form an automobile door.
[0004]
However, this conventional structure requires a large number of pins and screws to attach the module plate to the opening of the inner panel, which not only increases the number of parts but also increases the number of assembly steps. In addition, there is a problem that a separate sealing member is required between the edge of the opening of the inner panel and the module plate in order to ensure sealing and waterproofness.
[0005]
By the way, a punched hole is formed in a bent portion of a metal plate, and a composite thermoplastic resin material is insert-molded in the bent portion so that the resin material penetrates the punched hole (see Patent Document 1). When a resin member is placed inside a reinforcement made of steel, a hole is formed in the reinforcement, and the resin member is insert-molded inside the reinforcement so that the resin penetrates the front and back of the hole. (See Patent Document 2).
[0006]
[Patent Document 1]
Japanese Patent No. 2960047 [Patent Document 2]
JP-A-10-264855.
[0007]
[Problems to be solved by the invention]
None of the above-mentioned conventional publications relate to the inner panel and the carrier plate of the door of the automobile, but merely a technical idea of increasing the adhesion strength between the metal member and the resin insert portion. It is not possible to expect the cost reduction and weight reduction of the door.
[0008]
Therefore, according to the present invention, an opening is provided in an inner panel, and a carrier plate is insert-molded over the entire edge of the opening so as to cover the opening with a carrier plate supporting auxiliary equipment (a functional component of a door). As a result, the number of parts and man-hours required for mounting the carrier plate can be reduced, and cost can be reduced.In addition, the rigidity of the inner panel is increased with respect to the structure in which the carrier plate is screwed to the inner panel. Another object of the present invention is to provide a door structure of an automobile in which the opening of the inner panel can be enlarged to reduce the weight of the inner panel or the entire door.
[0009]
[Means for Solving the Problems]
An automobile door structure according to the present invention is an automobile door structure formed by joining an outer panel and an inner panel, wherein the inner panel is provided with an opening and is made of a resin that supports an auxiliary device of the door. A carrier plate is insert-molded over the entire edge of the opening so as to cover the opening.
[0010]
The opening is desirably opened at a central portion corresponding to the door body of the inner panel. The resin used for the carrier plate may be set to PC (polycarbonate), FRP (fiber reinforced plastic) based on PPE (polyphenylene ether), PA (polyamide), or PP (polypropylene).
In addition, GF (glass fiber), CF (carbon fiber) or SUS fiber can be used as the reinforcing fiber.
[0011]
According to the above configuration, since the carrier plate made of resin is insert-molded on the inner panel, the number of parts and man-hours required for mounting the carrier plate can be reduced, and the cost can be reduced. In addition, the rigidity of the inner panel can be increased by insert molding, in contrast to the structure in which a carrier plate with a non-insert molding structure is attached to the inner panel using pins, screws, screws, etc. By expanding, the weight of the inner panel or the entire door can be reduced. Furthermore, since sufficient sealing performance and waterproofness can be ensured by insert molding, a conventionally used sealing member can be omitted.
[0012]
In one embodiment of the present invention, the lower side of the opening of the inner panel is cut off, and the lower end of the carrier plate is bridged between the front side of the opening of the lower end of the inner panel and the rear side of the opening.
[0013]
According to the above configuration, since the opening of the inner panel is cut out to the lower side, the opening can be widened, and the area of the carrier plate used as the resin portion of the inner panel can be increased. Can be further improved.
[0014]
In one embodiment of the present invention, the lower end of the inner panel and the lower end of the carrier plate are both fixed to the lower end of the outer panel.
According to the above configuration, the carrier plate and the outer panel can be sandwiched and fixed without requiring a separate mounting portion.
[0015]
In one embodiment of the present invention, a flange having a high wall portion and a low wall portion provided along the opening edge at the opening edge of the inner panel, and located at an outer peripheral side of the flange. And a plurality of through holes are formed, and the insert portion of the carrier plate is formed so as to cover the flange and the through hole.
[0016]
It is desirable that the high wall portions and the low wall portions are formed alternately.
According to the above configuration, the combination of the flange at the opening edge and the through hole prevents the insert portion of the carrier plate from cracking or peeling, and can increase the bonding strength between the carrier plate and the inner panel.
[0017]
In one embodiment of the present invention, the through-hole is located on the outer peripheral side of the high wall portion of the flange.
According to the above configuration, the joining strength of the insert portion of the carrier plate can be further increased. In other words, by forming the through hole corresponding to the high wall portion, the joining strength of the insert portion can be secured by the communication of the resin, and even if the portion corresponding to the low wall portion does not have the through hole, the insert portion can be formed. Is sufficiently thick, so that the bonding strength can be ensured.
[0018]
In one embodiment of the present invention, in the door, after a carrier plate is insert-molded in the opening of the inner panel, an auxiliary device is mounted on the carrier plate, and the inner panel including the carrier plate and the auxiliary device is mounted on the outer panel. It has been joined.
[0019]
The auxiliary device may be set as a door function component such as a window regulator or a speaker.
According to the above configuration, before the outer panel and the inner panel are joined, the accessory is attached to the carrier plate, so that the assemblability of the accessory can be improved.
That is, it is possible to improve the assemblability of the auxiliary machine with respect to a configuration in which the auxiliary machine is retrofitted using the service opening provided in the carrier plate.
[0020]
In one embodiment of the present invention, after the carrier plate is insert-molded in the opening of the inner panel, the inner panel is painted, and after the painting, auxiliary equipment is mounted on the carrier plate.
[0021]
According to the above configuration, since the carrier plate is insert-molded before painting, there is no deterioration in the mountability between the insert portion and the inner panel due to painting, and there is no damage to the coating film during insertion.
[0022]
In one embodiment of the present invention, the carrier plate is formed integrally with a mounting portion for mounting an accessory and a cover for covering an upper portion of the accessory to prevent water droplets from adhering to the accessory.
The accessory may be set as a speaker.
According to the above configuration, it is possible to improve the water shielding and waterproofing of the auxiliary machine without increasing the number of parts.
[0023]
【Example】
An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawing shows a door structure of an automobile, and as shown in FIG. 5, a door 1 (however, a front door is shown in the drawing) is formed by joining an outer panel 2 and an inner panel 3 to each other. 8 and FIGS. 1 to 7, the door structure of the automobile will be described in the order of its manufacturing process.
[0024]
In step S1 shown in FIG. 8, the inner panel 3 is press-formed using a metal plate such as a steel plate as shown in FIG. The inner panel 3 has a door body 4 and a sash 5, and an opening 6 having a large opening area is formed in the center of the door body 4.
As shown in FIG. 6, a flange 7 is formed integrally with the edge of the opening 6 along the edge of the opening 6.
[0025]
The above-mentioned flange 7 has high wall portions 7H and low wall portions 7L alternately as shown in FIG. 6, and the door body 4 located on the outer peripheral side of the flange 7 has a high wall portion 7H. A plurality of through-holes 8 are formed so as to be located on the outer peripheral side of.
Here, the above-described flange 7 may be provided only in a portion where strength is required, but in this embodiment, the flange 7 is provided on the entire periphery of the edge of the opening 6.
[0026]
Next, in a step S2 shown in FIG. 8, a carrier plate 9 made of resin is insert-molded over the entire edge of the opening 6 so as to cover the opening 6 as shown in FIG.
As the resin forming the carrier plate 9, GFRP (glass fiber reinforced plastic) based on PA (polyamide) as a heat-resistant resin is used.
[0027]
The above-described carrier plate 9 is a resin molded portion of the inner panel 3, and is insert-molded so that the insert portion 9A of the carrier plate 9 covers the flange 7 and the through hole 8 as shown in FIGS.
[0028]
That is, since the through-hole 8 is formed corresponding to the high wall portion 7H, the above-mentioned resin connects the front and back surfaces of the through-hole 8, thereby ensuring the bonding strength of the insert portion 9A, and corresponds to the low wall portion 7L. Even if there is no through hole 8 in the portion, the thickness of the insert portion 9A is sufficiently large, so that the joining strength of the insert portion 9A can be ensured.
[0029]
An opening 10 for mounting a speaker is formed in the above-mentioned carrier plate 9 at a lower portion on the front side opposite to the opening 6, and a projection protruding into the vehicle compartment for mounting an armrest is provided at an intermediate portion facing the opening 6. A portion 11 is formed, an opening 12 for a door handle is formed above a rear portion of the projection 11, and an opening 13 for service is formed below the projection 11.
[0030]
Here, as shown in FIG. 7, a recessed mounting portion 10a for mounting a speaker 14 as an auxiliary device is provided in the above-described speaker mounting opening 10 and a speaker 14 for preventing water droplets from adhering to the speaker 14. A cover 10b covering the upper part is integrally formed. A waterproof cover (not shown) is attached to the openings 12 and 13.
[0031]
The cover 10 b has a half-conical cylindrical shape and a tapered cone shape that protrudes toward the rear side (outside of the vehicle) of the carrier plate 9, and prevents water drops from hitting the speaker 14.
[0032]
Next, in step S3 shown in FIG. 8, the inner panel 3 is painted to form a coating film (not shown). That is, by performing insert molding (see step S2) on the carrier plate 9 at a stage prior to this coating step, deterioration of the adhesiveness between the insert portion 9A and the inner panel 3 due to coating is prevented, and the coating film at the time of insertion is prevented. Avoid damage.
[0033]
Next, in step S4 shown in FIG. 8, necessary accessories (door functional parts) such as the speaker 14 (see FIG. 7) and the window regulator 15 are attached to the carrier plate 9 as shown in FIG. That is, before the inner panel 3 is joined to the outer panel 2, accessories such as the speaker 14 and the window regulator 15 are attached to the carrier plate 9, thereby improving the assemblability of the accessories.
[0034]
Next, in step S5 shown in FIG. 8, the inner panel 3 shown in FIG. 3 and the outer panel 2 shown in FIG. 4 are joined to form the door 1 in FIG. That is, the outer peripheral portion of the outer panel 2 is bent with respect to the outer peripheral portion of the inner panel 3 provided with the carrier plate 9 as an inner panel resin molded portion on which auxiliary equipment is previously mounted, and the bent portion forms the inner panel 3. The outer peripheral portion is pinched and fixed.
[0035]
In FIG. 4, reference numeral 2a denotes a door main body portion of the outer panel 2, 2b denotes a sash portion of the outer panel 2, and 2c denotes a door outer handle mounting portion. In FIG. 7, arrow IN indicates the inside of the vehicle compartment, and arrow OUT indicates the outside of the vehicle compartment.
[0036]
As described above, the vehicle door structure of the embodiment shown in FIGS. 1 to 8 is a vehicle door structure formed by joining the outer panel 2 and the inner panel 3, and the inner panel 3 has an opening. 6, and a resin carrier plate 9 supporting an auxiliary device (refer to the speaker 14 and the window regulator 15) of the door 1 is insert-molded over the entire edge of the opening 6 so as to cover the opening 6. It is.
[0037]
According to this configuration, since the carrier plate 9 made of resin is insert-molded in the inner panel 3, the number of parts and the number of steps required for mounting the carrier plate 9 can be reduced, and the cost can be reduced. In addition, the rigidity of the inner panel 3 can be increased by insert molding, as compared with a structure in which a carrier plate having a non-insert molding structure is attached to the inner panel using pins, screws, screws, and the like. The portion 6 can be enlarged to reduce the weight of the inner panel 3 to the entire door 1. Furthermore, since sufficient sealing performance and waterproofness can be ensured by insert molding, a conventionally used sealing member can be omitted.
[0038]
In addition, a flange 7 having a high wall portion 7H and a low wall portion 7L provided along the opening 6 at the opening 6 of the inner panel 3, and located on the outer peripheral side of the flange 7 A plurality of through holes 8 are formed, and the insert portion 9A of the carrier plate 9 is formed so as to cover the flange 7 and the through hole 8.
[0039]
According to this configuration, the combination of the flange 7 at the edge of the opening 6 and the through hole 8 prevents the insert portion 9A of the carrier plate 9 from cracking or peeling, and increases the bonding strength between the carrier plate 9 and the inner panel 3. Can be enhanced.
[0040]
The through hole 8 is located on the outer peripheral side of the high wall portion 7H of the flange 7.
According to this configuration, the joining strength of the insert portion 9A of the carrier plate 9 can be further increased. That is, by forming the through hole 8 corresponding to the high wall portion 7H, the resin can communicate with the through hole 8 to secure the joining strength of the insert portion 9A, and the portion corresponding to the low wall portion 7L can be secured. Since the thickness of the insert portion 9A is sufficiently large even without the through hole 8, the bonding strength can be ensured.
[0041]
Further, in the door 1, after the carrier plate 9 is insert-molded in the opening 6 of the inner panel 3, auxiliary equipment (see the speaker 14 and the window regulator 15) is attached to the carrier plate 9, and the carrier plate 9 and the auxiliary equipment are mounted. The inner panel 3 having the speakers 14 and the window regulator 15 is joined to the outer panel 2.
[0042]
According to this configuration, before the outer panel 2 and the inner panel 3 are joined, the accessory (see the speaker 14 and the window regulator 15) is attached to the carrier plate 9, so that the assemblability of the accessory is improved. be able to.
That is, it is possible to improve the assemblability of the auxiliary equipment with respect to the configuration in which the auxiliary equipment is retrofitted using the service opening provided in the carrier plate 9.
[0043]
In addition, after the carrier plate 9 is insert-molded in the opening 6 of the inner panel 3, the inner panel 3 is painted. After the painting, the carrier plate 9 is provided with auxiliary devices (see the speaker 14 and the window regulator 15). It is attached.
[0044]
According to this configuration, since the carrier plate 9 is insert-molded on the inner panel 3 before painting, there is no deterioration in the mountability of the insert portion 9A and the inner panel 3 due to painting, and there is no damage to the coating film during insertion.
[0045]
Further, the carrier plate 9 is integrally provided with a mounting portion 10a for attaching an accessory (see the speaker 14) and a cover 10b for covering the upper portion of the accessory to prevent water droplets from adhering to the accessory (see the speaker 14). It is molded.
According to this configuration, it is possible to improve the water blocking and waterproofing of the auxiliary machine (see the speaker 14) without increasing the number of parts.
[0046]
Instead of the step shown in FIG. 8, the step shown in FIG. 9 (however, other than claim 6) may be adopted.
In the step shown in FIG. 9, first, in step Q1, the inner panel 3 having the opening 6, the flange 7, and the through hole 8 is formed by press working.
[0047]
Next, in step Q2, a carrier plate 9 made of resin is insert-molded over the entire edge of the opening 6 so that the insert 9A covers the flange 7 and the through hole 8.
Next, in step Q3, the inner panel 3 and the outer panel 2 are joined to form the door 1.
[0048]
Next, in step Q4, the inner panel 3 and the outer panel 2 are coated to form a coating film on the panels 2 and 3.
Next, in step Q5, auxiliary equipment (functional parts of a door) such as a speaker 14 and a window regulator 15 are attached to the carrier plate 9 as a resin molding part of the inner panel 3 by using the service opening 13.
[0049]
Even when the door 1 is configured by the steps Q1 to Q5 shown in FIG. 9, functions and effects substantially the same as those of the previous embodiment are obtained except for the point of claim 6.
[0050]
FIG. 10 shows another embodiment of the flange 7 provided along the edge of the opening 6, and in the embodiment of FIG. 6, the high wall portion 7H is formed in a square shape. In the example, the high wall portion 7H is formed in an L-shape, and the notch portion 16 formed by the L-shaped high wall portion 7H is filled with the above-described resin during insert molding, thereby joining the insert portion 9A. The strength is further enhanced.
[0051]
FIG. 11 shows still another embodiment of the flange 7 provided along the edge of the opening 6. In the embodiment shown in FIG. 11, the high wall 7 </ b> H has a narrow width on the low wall 7 </ b> L side, The high wall portion 7H is formed in a substantially wedge shape so that the wall side is widened, and the substantially wedge-shaped retaining structure further increases the joining strength of the insert portion 9A and forms the through hole 8 in a long hole. By connecting the front and back surfaces of the through hole 8 having the long hole structure with the resin, the joining strength of the insert portion 9A is further enhanced.
[0052]
FIG. 12 shows still another embodiment of the flange 7 provided along the edge of the opening 6. In the embodiment shown in FIG. 12, in addition to the configuration of FIG. Is formed in a roughened portion 17 (shown with multiple points for convenience of illustration) roughened by shot peening or shot blasting before the insert molding, and the roughened portion 17 and The joint strength of the insert portion 9A is further enhanced by a synergistic effect with the configuration of the high wall portion 7H, the low wall portion 7L, and the through hole 8.
10, 11, and 12, the same parts as those in FIG. 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0053]
13 and 14 show another embodiment of the door structure of the automobile, in which the lower side corresponding to the opening 6 of the inner panel 3 is cut out, and the lower end 9B of the carrier plate 9 is extended downward to the notch. As shown in FIG. 13, the lower end 9B of the carrier plate 9 is bridged between the opening front side 6F and the opening rear side 6R of the lower end of the inner panel 3.
Further, the lower end of the inner panel 3 and the lower end 9C of the carrier plate 9 are fixed to the lower end 2d of the outer panel 2 as shown in FIG.
[0054]
As described above, in the vehicle door structure of the embodiment shown in FIGS. 13 and 14, the lower side of the opening 6 of the inner panel 3 is notched, and the lower end 9B of the carrier plate 9 is cut at the lower end of the inner panel 3 (that is, the notch). Part) is bridged between the front side 6F of the opening and the rear side 6R of the opening.
[0055]
According to this configuration, since the opening 6 of the inner panel 3 is cut out to the lower side, the opening 6 can be widened, and the area of the carrier plate 9 used as the resin portion of the inner panel 3 can be increased. In addition, the weight reduction of the inner panel 3 can be further improved.
[0056]
Further, both the lower end of the inner panel 3 and the lower end 9C of the carrier plate 9 are sandwiched and fixed to the lower end 2d of the outer panel 2.
According to this configuration, the carrier plate 9 and the outer panel 2 can be sandwiched and fixed without requiring a separate mounting portion.
[0057]
In this embodiment shown in FIGS. 13 and 14, the other configurations, operations, and effects are almost the same as those of the previous embodiment shown in FIGS. The same parts as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0058]
In correspondence between the configuration of the present invention and the above-described embodiment,
The auxiliary machine (door function part) of the present invention corresponds to the speaker 14 and the window regulator 15 of the embodiment.
The present invention is not limited only to the configuration of the above embodiment.
[0059]
【The invention's effect】
According to the present invention, an opening is provided in the inner panel, and the carrier plate is insert-molded over the entire rim of the opening so as to cover the opening with the carrier plate supporting the auxiliary device of the door (functional component of the door). Therefore, the number of parts and man-hours required for mounting the carrier plate can be reduced and cost can be reduced.In addition, the rigidity of the inner panel is increased with respect to the structure in which the carrier plate is screwed to the inner panel. There is an effect that the opening of the inner panel can be enlarged to reduce the weight of the inner panel or the entire door.
[0060]
[Brief description of the drawings]
FIG. 1 is a side view of an inner panel showing a door structure of an automobile.
FIG. 2 is a side view of an inner panel on which a carrier plate is insert-molded.
FIG. 3 is a side view of an inner panel on which auxiliary devices are mounted.
FIG. 4 is a side view of the outer panel.
FIG. 5 is an enlarged sectional view of a main part along the line AA in FIG. 3;
FIG. 6 is a perspective view of an insert portion.
FIG. 7 is a cross-sectional view taken along the line BB in FIG. 3 when the accessory is mounted.
FIG. 8 is a process diagram showing a manufacturing process of the door.
FIG. 9 is a process chart showing another embodiment of the manufacturing process of the door.
FIG. 10 is a perspective view showing another embodiment of the flange.
FIG. 11 is a perspective view showing still another embodiment of the flange.
FIG. 12 is a perspective view showing still another embodiment of the flange.
FIG. 13 is a side view showing another embodiment of the door structure of the automobile.
FIG. 14 is an enlarged cross-sectional view of a main part along the line CC in FIG. 13;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Door 2 ... Outer panel 2d ... Lower end 3 ... Inner panel 6 ... Opening 6F ... Opening front 6R ... Opening rear 7 ... Flange 7H ... High wall 7L ... Low wall 8 ... Through hole 9 ... Carrier plate 9A insert part 9B lower end part 9C lower end part 10a mounting part 10b cover 14 speaker (auxiliary equipment)
15: Window regulator (auxiliary equipment)

Claims (8)

An automobile door structure formed by joining an outer panel and an inner panel,
An opening is provided in the inner panel,
An automobile door structure in which a resin carrier plate for supporting auxiliary equipment of a door is insert-molded over the entire edge of the opening so as to cover the opening. The lower side of the opening of the inner panel is cut out,
2. The vehicle door structure according to claim 1, wherein the lower end of the carrier plate is bridged between the front side of the opening at the lower end of the inner panel and the rear side of the opening. 3. The vehicle door structure according to claim 2, wherein the lower end of the inner panel and the lower end of the carrier plate are both sandwiched and fixed to the lower end of the outer panel. A flange having a high wall portion and a low wall portion provided along the opening edge at the opening edge of the inner panel, and a plurality of through holes located on the outer peripheral side from the flange are formed. ,
2. The vehicle door structure according to claim 1, wherein an insert portion of the carrier plate is formed so as to cover the flange and the through hole. The vehicle door structure according to claim 4, wherein the through hole is located on an outer peripheral side of a high wall portion of the flange. After the carrier plate is insert-molded in the opening of the inner panel,
Auxiliary equipment is installed on the carrier plate,
The vehicle door structure according to claim 1, wherein the inner panel including the carrier plate and the auxiliary device is joined to the outer panel. After the carrier plate is insert molded in the opening of the inner panel,
7. The vehicle door structure according to claim 6, wherein the inner panel is painted, and after the painting, auxiliary equipment is mounted on the carrier plate. 2. The vehicle door structure according to claim 1, wherein said carrier plate is integrally formed with a mounting portion for mounting an accessory and a cover for covering an upper portion of the accessory to prevent water droplets from adhering to the accessory.

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