JP4838218B2 - Door hinge mounting structure and door hinge mounting method - Google Patents

Description

  The present invention relates to a door hinge mounting structure such as a vehicle door and a door hinge mounting method.

When a vehicle door is attached to a vehicle body, there are some that fix a door hinge attached to the door to the vehicle body, or fix a door hinge fixed to the vehicle body to the door (see, for example, Patent Document 1).
Japanese Patent Publication No. 6-88493

  The door for the vehicle is assembled to the vehicle body in the welding process of the main body assembly process, painted with the vehicle body in that state in order to ensure the color uniformity of the door and the vehicle body, and then removed from the vehicle body to the subline. The functional parts are attached on the sub-line, and then assembled on the car body again in the car body assembly process. However, since the positioned door is once removed from the vehicle body when moving to the subline, if there is an installation error when it is reassembled in the vehicle body assembly process, the building adjustment is performed again in the vehicle body assembly process. There is a need. Therefore, there is a problem that the merchantability deteriorates at the time of building adjustment, and that the building adjustment again in the vehicle body assembly process decreases the productivity.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a door hinge mounting structure and a door hinge mounting method capable of improving productivity and assembling the door to a vehicle body without deteriorating the merchantability.

In order to achieve the above object, the invention described in claim 1 is a hinge mounting structure of a door (for example, the front door D in the embodiment) provided in a vehicle, and the door includes hinge means (upper hinge UH, After being attached to the vehicle body by the first bolt (for example, the temporary fixing bolt 19 in the embodiment) via the lower hinge LH), the second bolt (for example, in the embodiment) is removed from the vehicle body and is again attached to the vehicle body. First, the first bolt for attaching the door to the vehicle body is inserted into an attachment hole (for example, the positioning attachment hole 16 in the embodiment) of the hinge means. A first taper that is reduced in diameter toward the mounting direction and has a tightening margin with respect to the mounting hole. The second bolt is attached to a shaft portion (for example, the shaft portion 34 in the embodiment) that is inserted into the attachment hole of the hinge means. The taper includes a second taper portion (for example, the second taper portion TP2 in the embodiment) that has a diameter that decreases toward the direction and that has a tightening margin with respect to the attachment hole, and the first taper portion includes the first taper portion. Compared with the taper portion of 2, the taper portion has a larger angle with respect to the mounting direction (for example, the inclination angle θ1 in the embodiment), and is shorter along the mounting direction. .
With this configuration, when the door is attached to the vehicle body with the first bolt, the tightening margin is increased when the first taper portion formed on the first bolt is inserted into the attachment hole of the hinge means. Therefore, when the first bolt is tightened in a state where the door is positioned with respect to the vehicle body, the first bolt is fixed to the corresponding mounting portion while cutting the mounting hole to expand the diameter, and the hinge means is the first. The door can be attached to the vehicle body with the bolt positioned.
Further, when the door is removed from the vehicle body and then attached to the vehicle body again, the second taper portion formed on the second bolt is already expanded by the first bolt when the second taper portion is inserted into the attachment hole of the hinge means. The centering is performed while further cutting and expanding the diameter of the mounting hole, so that the hinge means is accurately positioned at the position fixed by the first bolt by the second bolt.

According to a second aspect of the present invention, the first bolt and the second bolt are provided on the lower portion of the bolt neck (for example, the bolt neck lower portions 43 and 33 in the embodiment) and the first tapered portion and the second tapered portion. A bolt head seating surface (for example, the bolt head seating surfaces 42 and 32 in the embodiment) that is continuous with the first taper portion and the second taper portion (for example, in the embodiment). Concave portions 48, 38) are provided.
With this configuration, when the first taper portion of the first bolt and the second taper portion of the second bolt are inserted into the attachment hole of the hinge means, the diameter of the attachment hole is increased. The cutting waste generated when it is inserted can be collected in the concave portion of the bolt head seating surface.

The invention described in claim 3 is a bolt head formed on the first bolt when the door is painted with the first bolt attached to the vehicle body via the hinge means. The bolt head seat surface (for example, the bolt head seat surface 32 in the embodiment) formed on the second bolt is larger than the seat surface (for example, the bolt head seat surface 42 in the embodiment). It is characterized by being.
By configuring in this way, after the painting process, the peeling part of the paint on the surface of the hinge means remaining when the first bolt is removed to remove the door, the bolt head seat larger than the first bolt The bolt head seating surface of the second bolt having the surface can be covered.

  According to a fourth aspect of the present invention, there is provided a door hinge mounting method comprising: a step of inserting a first bolt into a mounting hole of a hinge means attached to a vehicle body and attaching the door to the vehicle body (for example, temporary door fixing in an embodiment). Step), removing the first bolt and removing the door from the vehicle body (for example, a door removing step in the embodiment), inserting a second bolt into the mounting hole, and attaching the door to the vehicle body. A door hinge mounting method having a mounting step (for example, a door final assembly step in the embodiment), wherein the first bolt has a diameter reduced toward a mounting portion in a shaft portion inserted into the mounting hole. And a first taper portion having a tightening margin with respect to the mounting hole, and the second bolt is contracted toward a mounting portion in a shaft portion inserted into the mounting hole. And a second taper portion having a tightening margin with respect to the mounting hole, and the first taper portion has a larger angle with respect to the mounting direction than the second taper portion. It has a tapered shape and is short along the mounting direction.

  According to a fifth aspect of the present invention, the first bolt is inserted into the door mounting side mounting hole of the hinge means, and the inner diameter of the mounting hole is tapered by the tapered portion of the first bolt. Tightening the first bolt while expanding the diameter and fixing the door to the vehicle body (for example, a door temporary fixing step in the embodiment), removing the first bolt and removing the door from the vehicle body A step (for example, a door removing step in the embodiment), the second bolt is inserted into the mounting hole on the door mounting side of the hinge means, and the inner diameter of the mounting hole expanded by fastening the first bolt is A process of attaching the door to the vehicle body by tightening the second bolt by centering while further cutting and expanding the diameter at the tapered portion of the second bolt (for example, the final door assembly in the embodiment) It characterized by having a marked step) and.

According to the first aspect of the present invention, when the door is attached to the vehicle body with the first bolt, the first taper portion formed on the first bolt is inserted into the attachment hole of the hinge means. Since there is a tightening margin, when the first bolt is tightened in a state where the door is positioned with respect to the vehicle body, the first bolt is fixed to the corresponding mounting portion while cutting the mounting hole to expand the diameter, and the hinge means Is positioned by the first bolt and the door is attached to the vehicle body.
Further, when the door is removed from the vehicle body and then attached to the vehicle body again, the second taper portion formed on the second bolt is already expanded by the first bolt when the second taper portion is inserted into the attachment hole of the hinge means. Since the centering is performed while further cutting and expanding the diameter of the attachment hole, the door can be attached to the vehicle body with the hinge means positioned by the second bolt.
Therefore, there is an effect that the door can be accurately attached to the vehicle body using the second bolt, although it is once removed from the vehicle body after positioning. As a result, there is an effect that the merchantability of the door mounting portion and the productivity in the door mounting process can be improved.
According to the second aspect of the present invention, when the first taper portion of the first bolt and the second taper portion of the second bolt are inserted into the attachment holes of the hinge means, the attachment holes are enlarged. Since the cutting waste generated when inserted while diameter can be collected in the concave part of the bolt head seating surface, the bolt head seating surface is securely brought into contact with the hinge means to ensure a stable mounting state. There is an effect that can be obtained.
According to the invention described in claim 3, after the painting process, the paint peeling portion on the surface of the hinge means that remains when the first bolt is removed to remove the door is a bolt larger than the first bolt. Since the second bolt having the head seating surface can be covered with the bolt head seating surface, there is an effect that the appearance is not impaired.
According to the fourth and fifth aspects of the present invention, when the door is finally attached to the vehicle body by the second bolt via the hinge means, the second bolt is displaced to the hinge means positioned by the first bolt. This eliminates the possibility of building errors in the door, eliminates the need for building adjustments, and enables accurate positioning and mounting of the door to the vehicle body, improving productability and productivity. There is an effect that can be done.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front side view of the completed vehicle. In the figure, a door attachment opening 5 is formed in a portion surrounded by a side sill 1, a front pillar 2, a center pillar 3, and a roof side rail 4 at the side of the front part of the vehicle body.
A front door D is supported on the door pillar 5 via the upper hinge UH and the lower hinge LH so that the front pillar 2 can be opened and closed.

  FIG. 2 is a front view of the front door. As shown in the figure, a pair of door side mounting holes 7 and 7 having weld nuts 6 and 6 for attaching the upper hinge UH to the upper portion are formed at the front end portion of the front door D, and the lower hinge LH at the lower portion. A pair of door-side mounting holes 8 and 8 having weld nuts 6 and 6 for mounting are formed.

  FIG. 3 is an enlarged view of a main part near the upper hinge of FIG. As shown in the figure, the upper hinge UH includes a vehicle body side hinge arm 10, a door side hinge arm 11, and a hinge pin 12 that connects the vehicle body side hinge arm 10 and the door side hinge arm 11 to each other so as to be rotatable. It consists of and. A pair of bolt holes 13, 13 are formed in the vehicle body side hinge arm 10 at the front and rear, and the bolts 14, 14 inserted therethrough are fastened and fixed to weld nuts 15, 15 fixed to the front pillar 2 of the vehicle body. A hinge arm 10 is fixed to the front pillar 2 of the vehicle body. Here, the bolt hole 13 is formed with a certain margin with respect to the bolt 14.

  On the other hand, the door-side hinge arm 11 of the upper hinge UH has a positioning attachment hole 16 at the upper end and an attachment hole 17 at the lower end, and is assembled to the positioning attachment hole 16 at the upper end and the attachment hole 17 at the lower end. The attachment bolt 20 and the attachment bolt 21 are inserted, and the assembly bolt 20 and the attachment bolt 21 are inserted into the door side attachment holes 7 and 7 of the front door D, and are fastened and fixed to the weld nuts 6 and 6. Here, the door-side mounting holes 7 and 7 are formed with a certain margin with respect to the assembly bolt 20 and the mounting bolt 21. The mounting hole 17 is also formed with a certain margin with respect to the mounting bolt 21.

Here, as shown in FIG. 1, similarly to the upper hinge UH, the lower hinge LH also connects the vehicle body side hinge arm 22, the door side hinge arm 23, and the vehicle body side hinge arm 22 and the door side hinge arm 23 to each other. The lower hinge LH has a positioning attachment hole 16 formed at the lower end portion of the door side hinge arm 23 and an attachment hole 17 formed at the upper end portion of the lower hinge LH. Different from UH.
Therefore, the vehicle body side hinge arm 22 of the lower hinge LH is also fixed to the front pillar 2 of the vehicle body by the bolts 14, 14, and the assembly bolt 20 and the mounting bolt 21 are attached to the positioning mounting hole 16 at the lower end and the mounting hole 17 at the upper end. Each of the assembled bolts 20 and the mounting bolts 21 are inserted into the door-side mounting holes 8 and 8 of the front door D in the same manner as the upper hinge UH, and are fastened and fixed to the weld nuts 6 and 6 (see FIG. 3). Partially supported).

FIG. 4 is a front view of the assembly bolt.
As described above, the assembly bolt 20 is fastened to the upper end portion of the door side hinge arm 11 of the upper hinge UH and the lower end portion of the door side hinge arm 23 of the lower hinge LH in the door final assembly step. The assembly bolt 20 is provided with a skirt portion 31 that spreads around the lower portion of the bolt head 30, and a bolt head that abuts the periphery of the positioning attachment hole 16 of the door side hinge arms 11, 23 on the back side of the skirt portion 31. A part seat surface 32 is provided. A bolt neck lower portion 33 connected to the bolt head portion 30 is provided with a shaft portion 34 to be inserted into the positioning attachment hole 16 of the door side hinge arms 11 and 23. A straight portion 36 is formed at the tip of the portion 35.
The shaft portion 34 includes a second taper portion TP <b> 2 that has a diameter that decreases toward the mounting bolt 20 in the mounting direction and that has a tightening margin with respect to the positioning mounting hole 16. A screw portion 35 is connected to the second taper portion TP2 via a constricted portion 37 having a diameter reduced by 45 degrees. Here, having a tightening margin with respect to the positioning attachment hole 16 is a dimension setting such that the second taper portion TP2 always wraps with respect to the positioning attachment hole 16, and the second taper portion TP2 is positioned. It means that it can be inserted only halfway through the mounting hole 16 and is inserted so that the inner diameter portion of the positioning mounting hole 16 is scraped off when tightening (the same applies hereinafter).
Here, as shown in FIG. 5, the second taper portion TP2 is continuous so as to bite into the bolt head seat surface 32 which is the back surface of the skirt portion 31, and a concave portion 38 is provided here. .

FIG. 6 is a front view of the temporary fixing bolt. The temporary fixing bolt 19 is fastened to the positioning mounting hole 16 which is a fastening portion of the mounting bolt 20 in the door temporary fixing process before the final door final mounting process using the mounting bolt 20 described above. . Therefore, in order to fix the door-side hinge arms 11 and 23 of the upper hinge UH and the lower hinge LH to the front door D in the temporary fixing step before the painting step, the door-side hinge arm 11 of the upper hinge UH is fixed. Used at the upper end and the lower end of the door side hinge arm 23 of the lower hinge LH.
The temporary fixing bolt 19 also has the same configuration as the assembly bolt 20, has a skirt portion 41 that spreads around the bolt head 40, and the positioning mounting holes 16 of the door side hinge arms 11 and 23 are formed on the back surface of the skirt portion 41. A bolt head seating surface 42 that abuts the periphery is provided. A bolt neck lower portion 43 connected to the bolt head portion 40 is provided with a shaft portion 44 to be inserted into the positioning attachment hole 16 of the door side hinge arms 11 and 23. A straight portion 46 is formed on the tip side of the portion 45.
The shaft portion 44 includes a first taper portion TP <b> 1 that is reduced in diameter toward the temporary fixing bolt 19 in the attachment direction and that has a tightening margin with respect to the positioning attachment hole 16. The first taper portion TP1 is connected to a screw portion 45 through a constricted portion 47 having a diameter reduced by 45 degrees.
Here, as shown in FIG. 7, the first taper portion TP1 is continuous so as to bite into the bolt head seat surface 42 which is the back surface of the skirt portion 41, and a concave portion 48 is provided here. .

Here, the screw portions 35 and 45 and the straight portions 36 and 46 of the temporary fixing bolt 19 and the assembly bolt 20 are set to have the same size configuration, but the diameter A of the bolt head seat surface 32 of the assembly bolt 20 is set. Is set larger than the diameter a (A> a) of the bolt head seating surface 42 of the temporary fixing bolt 19. Further, both the temporary fixing bolt 19 and the assembly bolt 20 have such hardness that the inner diameter portion of the positioning mounting hole 16 can be cut.
Further, the first taper portion TP1 of the temporary fixing bolt 19 and the second taper portion TP2 of the assembled bolt 20 have the same diameter in the diameter A1 of the large diameter portion and the diameter A2 of the small diameter portion. The inclination angle θ1 with respect to the mounting direction of the first taper portion TP1 of 19 is larger than the inclination angle θ2 of the second taper portion TP2 of the mounting bolt 20 with respect to the mounting direction (θ1> θ2). And the length a3 of the first taper portion TP1 (from the large diameter portion to the small diameter portion) is the length of the second taper portion TP2 along the mounting direction (see FIGS. 5 and 7). It is shorter than A3 (A3> a3). Here, it is assumed that the lengths of the tapered portions TP1 and TP2 do not include the portions extending to the concave shaped portions 38 and 48.
That is, the length a3 of the first taper portion TP1 of the temporary fixing bolt 19 is set to be shorter than the length A3 of the second taper portion TP2 of the assembly bolt 20, and therefore the first taper of the temporary fixing bolt 19 is set. The portion TP1 has a tapered shape with a larger inclination angle θ1 (θ1> θ2) with respect to the mounting direction than the second tapered portion TP2 of the assembly bolt 20.
The inner diameter of the positioning mounting hole 16 is set to be the same as the diameter A2 of the small diameter portions of the first and second taper portions TP1 and TP2 of the temporary fixing bolt 19 and the assembly bolt 20. The inner diameter of the positioning mounting hole 16 may be larger than A2 on the assumption that it is smaller than A1 if the machining allowance can be secured.

FIG. 8 is a view schematically showing the tightening position of the temporary fixing bolt 19 and the assembly bolt 20 with respect to the positioning attachment hole 16 of the door side hinge arm 11. The door side hinge arm 11 will be described by taking the upper hinge UH as an example.
As shown in the figure, when the temporary fixing bolt 19 is tightened, when the first taper portion TP1 of the shaft portion 44 reaches the positioning attachment hole 16 of the door side hinge arm 11, the first taper portion P1 is Since the positioning mounting hole 16 has a tightening margin, by tightening the temporary fixing bolt 19, the inner diameter portion near the entrance is cut by the diameter A 1 of the large diameter portion of the temporary fixing bolt 19 and expanded. Therefore, when the tightening of the temporary fixing bolt 19 is finished, the annular first hatched portion H1 having a triangular cross section is cut off near the entrance of the positioning mounting hole 16, and the first tapered portion TP1 of the temporary fixing bolt 19 is cut into this portion. It will abut. In this case, since the first taper portion TP1 gradually cuts the inner diameter portion of the positioning mounting hole 16 from the tip side, the temporary fixing bolt 19 is centered with respect to the positioning mounting hole 16. The positioning bolt 19 is fastened to the center portion of the positioning mounting hole 16 of the door side hinge arm 11 while maintaining the position of the front door D set at an appropriate position.
Then, in the door final assembly step, the assembly bolt 20 is further tightened to the positioning attachment hole 16 of the door-side hinge arm whose entrance side is expanded in this way.

When the assembly bolt 20 is tightened and the second taper portion TP2 of the shaft portion 34 reaches the enlarged diameter positioning attachment hole 16, the second taper portion TP2 is in contact with the enlarged diameter positioning attachment hole 16. Since there is also a tightening allowance, by tightening the assembly bolt 20, the inner diameter portion from the vicinity of the entrance to the inside is further cut and expanded to be scraped off. Accordingly, when the tightening of the mounting bolt 20 is finished, the annular second hatched portion H2 having a triangular cross section is cut away from the entrance of the positioning mounting hole 16 so as to further expand the first hatched portion H1, and this portion The second taper portion TP2 of the assembly bolt 20 comes into contact with. Also in this case, the assembly bolt 20 is centered with respect to the positioning mounting hole 16 because the second taper portion TP2 gradually cuts the inner side of the inner diameter portion from the tapered portion.
Accordingly, when the temporary fixing bolt 19 is tightened, the positioning mounting hole 16 on the upper side of the door-side hinge arm 11 of the upper hinge UH and the door-side hinge arm 23 of the lower hinge LH that are attached to the vehicle body at appropriate positions. Since the assembly bolt 20 is centered and tightened to the lower positioning attachment hole 16 in the door final assembly process, the front door D and the vehicle body are positioned accurately. Therefore, since the work for adjusting the installation is not necessary, the productivity can be improved without deteriorating the appearance quality.

Next, a process of assembling the front door D to the vehicle body using the temporary fixing bolt 19 and the assembly bolt 20 in the main assembly process will be described with reference to FIG. Although the rear door is usually assembled, the case where only the front door D is assembled without touching the rear door will be described as an example for easy understanding.
As shown in FIG. 9, the upper hinge UH and the lower hinge LH are attached to the front pillar 2 in the hinge attaching step of the main assembly step. Specifically, bolts 14 and 14 are inserted into bolt holes 13 and 13 of the vehicle body side hinge arms of the lower hinge LH and the upper hinge UH and tightened to the weld nuts 15 and 15 of the front pillar 2.

Next, in the door temporary fixing step, a temporary fixing bolt 19 is inserted into the positioning attachment hole 16 at the upper end of the door-side hinge arm 11 of the upper hinge UH, and the front door D is properly attached to the vehicle body with a jig or the like. The temporary fixing bolt 19 is tightened to the weld nut 6 of the door-side mounting hole 7 of the front door D in a state where it is positioned at a proper position.
In this case, similarly, a temporary fixing bolt 19 is inserted into the positioning mounting hole 16 at the lower end of the door side hinge arm 23 of the lower hinge LH, and the temporary fixing bolt 19 is welded to the door side mounting hole 8 of the front door D. Tighten to 6. At this time, the vehicle body side hinge arms 10 and 22 of the upper hinge UH and the lower hinge LH are firmly fixed to the front pillar 2 of the vehicle body by the bolts 14 and 14.
By tightening the temporary fixing bolt 19, the positions of the upper hinge UH and the lower hinge LH with respect to the vehicle body for accurately mounting the front door D to the vehicle body are determined. At this time, the temporary fixing bolt 19 is centered with respect to the positioning mounting hole 16 by the first taper portion TP1, and the upper hinge UH and the lower hinge LH are fixed to the center pillar 3. In this state, the front door D is moved in the painting process. The mounted car body is painted.

Then, in the door removing step, the temporary fixing bolts 19 of the upper hinge UH and the lower hinge LH are removed, and the front door D is removed. At this time, in order to position and temporarily fix the front door D, the paint may be peeled off from the surfaces of the door-side hinge arms 11 and 23 with which the bolt head seat surfaces 32 and 42 of the temporary fixing bolt 19 abut.
After that, the car body is transported to the main assembly process, and the mounting of the engine, suspension, and interior parts are carried out, and the removed front door D is transported to the sub-line door equipment process, where the window regulator, interior parts Perform outfitting such as mounting.
Then, the front door D after the outfitting is sent to the door final assembling step of the main assembly line, and the front door D after the outfitting is attached to the vehicle body.

That is, in the door-side hinge arm 11 of the upper hinge UH, the assembly bolt 20 is inserted into the positioning attachment hole 16 at the upper end, the attachment bolt 21 is inserted into the attachment hole 17 at the lower end, and the door-side hinge arm 23 of the lower hinge LH. The mounting bolt 20 is inserted into the positioning mounting hole 16 at the lower end, the mounting bolt 21 is inserted into the mounting hole 17 at the upper end, and the mounting bolt 20 and the mounting bolt 21 are connected to the door side mounting hole 7 of the front door D, Tighten to each weld nut 6.
When the assembly bolt 20 is tightened, the assembly bolt 20 is centered with respect to the positioning mounting hole 16 by the second taper portion TP2, so that the operation of simply tightening the assembly bolt 20 is performed, and then the rest If the mounting bolt 21 is tightened, the front door D can be fixed at the correct position in the vehicle body vertical direction and vehicle width direction in which the upper hinge UH and the lower hinge LH are positioned during the temporary fixing process.

  According to the above embodiment, when the front door D is attached to the vehicle body with the temporary fixing bolt 19, the tightening margin is increased when the first taper portion TP <b> 1 formed on the temporary fixing bolt 19 is inserted into the positioning attachment hole 16. Therefore, when the temporary fixing bolt 19 is tightened in a state where the front door D is positioned with respect to the vehicle body, the temporary fixing bolt 19 is centered by scraping the first hatched portion H1 while expanding the positioning mounting hole 16. These are fixed to the weld nuts 6 of the corresponding door side mounting holes 7 and 8 of the front door D. Accordingly, the upper hinge UH and the lower hinge LH are positioned on the vehicle body by the temporary fixing bolts 19, and the front door D is attached to the vehicle body.

When the front door D is removed from the vehicle body and then attached to the vehicle body again, the second taper portion TP2 formed on the assembly bolt 20 is inserted into the positioning attachment holes 16 of the upper hinge UH and the lower hinge LH. Since the centering is performed while scraping the second hatched portion H2 while further increasing the diameter of the positioning mounting hole 16 already expanded by the temporary fixing bolt 19, the assembly bolt 20 has already been positioned by the temporary fixing bolt 19. The front door D, which is tightened at the same position and thus positioned in the temporary fixing process, can be attached in a state of being positioned on the vehicle body.
Therefore, the door can be accurately attached to the vehicle body using the assembly bolt 20 even though it has been removed from the vehicle body once, and the productability of the front door D mounting portion and the productivity in the door mounting process are improved. Can be made.

Further, when the first taper portion TP1 of the temporary fixing bolt 19 and the second taper portion TP2 of the assembly bolt 20 are inserted into the positioning mounting holes 16 of the upper hinge UH and the lower hinge LH, the positioning mounting hole 16 Can be collected in the concave shaped portions 48 and 38 of the bolt head seating surfaces 42 and 32 of the temporary fixing bolt 19 and the assembly bolt 20. A stable mounting state can be obtained by bringing the bolt head seat surface into contact with 42, 32, the upper hinge UH, and the lower hinge LH.
And even if the peeling part of the coating on the surface of each door side hinge arm 11 and 23 has arisen when the temporary fixing bolt 19 is removed after the painting process to remove the front door D, the temporary fixing bolt 19 Since the assembly | attachment bolt 20 which has the bolt head seat surface 32 larger than the bolt head seat surface 42 can be covered with this bolt head seat surface 32, an external appearance is not impaired.

  Thus, if the front door D is finally attached to the vehicle body by the assembly bolt 20 and the mounting bolt 21 via the upper hinge UH and the lower hinge LH, the assembly bolt 20 is positioned at the upper portion positioned by the temporary fixing bolt 19. Since there is no deviation in the hinge UH and the lower hinge LH, there is no installation error in the front door D in the door final assembly process, no installation adjustment is required, and the front door D is positioned accurately and positioned. It is possible to improve the productability and productivity.

  In addition, this invention is not restricted to the said embodiment, For example, it can apply also to the assembly | attachment of a rear door. In this case, the member corresponding to the front pillar 2 to which the front door D is attached is the center pillar 3. Further, the bolt used between the door hinge arms 11 and 23 of the upper and lower hinges UH and LH and the front door D has been described as an example, but the bolt used between the vehicle body hinge arms 10 and 22 and the vehicle body is described. The present invention can also be applied when first and second tapered portions are provided.

It is a front part side view of the completed vehicle of an embodiment of this invention. It is a front view of a front door of an embodiment of this invention. It is a principal part enlarged view of the upper hinge vicinity of FIG. It is a front view of an assembly | attachment bolt. It is the elements on larger scale of FIG. It is a front view of a temporary fixing bolt. It is the elements on larger scale of FIG. It is explanatory drawing which shows the insertion condition of an assembly | attachment bolt and a temporary fixing bolt. It is process drawing of an assembly | attachment operation | work.

Explanation of symbols

16 Positioning mounting hole (Mounting hole)
19 Temporary set bolt (first bolt)
20 Assembly bolt (second bolt)
32, 42 Bolt head bearing surface 33, 43 Bolt neck lower part 34, 44 Shaft part 38, 48 Recessed part D Front door (door)
UH Upper hinge (hinge means)
LH Lower hinge (hinge means)
TP1 First taper portion TP2 Second taper portion θ1 Inclination angle

Claims (5)

  A door hinge mounting structure provided in a vehicle, wherein the door is attached to a vehicle body by a first bolt via a hinge means, then detached from the vehicle body, and again attached to the vehicle body by a second bolt. The first bolt for attaching the door to the vehicle body first decreases in diameter toward the attachment direction to the shaft portion inserted into the attachment hole of the hinge means, and the first bolt is attached to the attachment hole. A first taper portion having a tightening margin, wherein the second bolt is reduced in diameter toward the mounting direction of the shaft portion inserted into the mounting hole of the hinge means, and with respect to the mounting hole A second taper portion having a tightening margin, and the first taper portion has a taper shape with a larger angle with respect to the mounting direction and in the mounting direction as compared with the second taper portion; Short along Hinge mounting structure of the door, characterized by being made.   The first bolt and the second bolt include the first taper portion and the second taper portion at a bolt neck lower portion, and a bolt head continuous to the first taper portion and the second taper portion. 2. The door hinge mounting structure according to claim 1, wherein the seating surface is provided with a concave portion.   When the door is painted with the first bolt attached to the vehicle body via the hinge means, the second head compared to the bolt head seat surface formed on the first bolt. 3. The hinge mounting structure for a door according to claim 1, wherein a bolt head seat surface formed on the bolt is formed large.   A step of inserting a first bolt into an attachment hole of a hinge means attached to the vehicle body and attaching the door to the vehicle body; a step of removing the first bolt and removing the door from the vehicle body; A door hinge mounting method including a step of inserting a second bolt and attaching the door to the vehicle body, wherein the first bolt is directed toward the shaft portion inserted into the mounting hole in the mounting direction. A first tapered portion having a reduced diameter and having a tightening margin with respect to the mounting hole, wherein the second bolt has a diameter reduced toward a mounting portion toward a shaft portion inserted into the mounting hole; and A second taper portion having a tightening margin with respect to the mounting hole, wherein the first taper portion has a tapered shape with a larger angle with respect to the mounting direction compared to the second taper portion; And in the mounting direction Hinge mounting method of the door, characterized in that it is shorter I.   The first bolt is inserted into the mounting hole on the door mounting side of the hinge means, and the first bolt is fastened while the inner diameter of the mounting hole is cut and expanded by the tapered portion of the first bolt. Fixing the door to the vehicle body; removing the first bolt; removing the door from the vehicle body; inserting a second bolt into the mounting hole on the door mounting side of the hinge means; The inner diameter of the mounting hole whose diameter has been expanded by tightening the bolt is further cut by the tapered portion of the second bolt and centered while the diameter is increased, and the second bolt is fastened, and the door is attached to the vehicle body. A door hinge mounting method comprising the steps of:

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