JPH0684700B2 - Back door mounting structure - Google Patents

Description

The present invention relates to a back door mounting structure.

<Prior Art> A conventional back door mounting structure is shown in, for example, FIGS. 4 and 5 (see Japanese Patent Laid-Open No. 62-160383). Reference numeral 1 denotes a back door of an automobile, in which a rear window panel 5 is assembled to a back door body 4 having a closed cross-section structure of an outer panel 2 and an inner panel 3. And the upper part 6 of this back door body 4
Of these, a hinge unit 8 is fixed to a front surface portion (vehicle body side corresponding surface portion) 7 formed by the inner panel 3. The hinge unit 8 has a hinge mail 9 which is vertically rotatable about a hinge point S.

On the other hand, two recesses 11 are formed in the rear part of the roof panel 10, and the bottom surface (side surface of the roof space) of each recess 11 is
The reinforcements 12 are joined together, and two (only one in the figure) mounting holes 13 arranged in the vehicle width direction are formed for each reinforcement. Reference numeral 14 denotes a bolt plate, and two upper bolts 15 and two lower bolts 16 are juxtaposed in parallel on each of the upper and lower surfaces of the bolt plate 14. The lower bolt 16 of this bolt plate 14
It is inserted into the mounting hole 13 of the recess 11 via a spacer 17 and is fixed by tightening with a nut 18. The tightening work with the nut 18 can be performed from the work opening 21 of the rear roof rail 20 exposed before the roof trim 19 is attached.

Then, after fixing the bolt plate 14 in the recess 11 in this way, the entire back door 1 is once lifted to the position above the bolt plate 14, and then the back door 1 is lowered, while being attached to the tip of the hinge mail 9. The provided bolt hole 22 is inserted into the upper bolt 15 of the bolt plate 14 and then tightened and fixed by a nut 23 different from the previous one. Finally, as a visual measure, attach the cover 24 to the recess 11
It covers the structure inside 11. When the back door 1 is removed, the work reverse to the above may be performed.

<Problems to be Solved by the Invention> However, in such a conventional back door mounting structure, in order to mount or dismount the back door 1, the entire heavy back door 1 is covered by the roof panel 10.
I had to lift it to a higher position, which required a great deal of work and was difficult to do.

Further, since there are two tightening points by the nuts 18 and 23 and a special cover 24 for appearance is required, it is disadvantageous in terms of the number of work steps and the number of parts.

The present invention was made by paying attention to such a conventional technique, and it is easy to install and remove the back door,
Moreover, the purpose of the present invention is to provide a back door mounting structure with a reduced number of man-hours and parts.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the backdoor mounting structure according to the present invention is supported by a hinge mail that is vertically rotatable about a hinge point set on the vehicle body side. Against
The upper part of the back door body having the closed cross-section structure is inserted from the insertion port formed on the corresponding surface part on the vehicle body side, and the back door main body upper part is inserted into the inserted hinge mail from the inside of the vehicle interior by the fixing means. It is installed.

<Operation> The back door according to the present invention is designed such that the back door body is attached to the hinge mail on the vehicle body side through the insertion port formed on the surface corresponding to the vehicle body side, and the back door body is attached to the hinge mail. The door does not need to be lifted above the height of the hinge mail (vehicle body) to be attached, and can be attached only by horizontal movement at that height position,
The work is very easy.

In addition, since the mounting location is only one part, the hinge mail and the upper part of the back door body, the number of working steps is small, and the mounting location is not exposed to the outside.

<Example> A preferred example of the present invention will be described below with reference to Figs. The same parts as those in the prior art are designated by the same reference numerals, and a duplicate description will be omitted.

A continuous recess 26 is formed in the rear portion of the roof panel 25 as the "vehicle body" along the vehicle width direction, and an eaves 27 is formed above the recess 26 so as to project rearward. ,
The inside of the recess 26 is made difficult to see from the outside. Further, two hinge units 28 are fixed to the left and right in the concave portion 26 by bolts 29 at a predetermined interval.
A nut 32 inserted from a working opening 31 of the rear roof rail 30 is tightened and fixed to the bolt 29. The hinge point S of this hinge unit 28 has a hinge mail that can be rotated up and down.
33 is attached to the rear side. The hinge mail 33 includes a substantially vertical pressing portion 34 directly attached to the hinge point S, and an insertion portion 35 protruding rearward from an intermediate position of the pressing portion 34. A laterally symmetrical taper portion 36 is formed at the side end portion of the insertion portion 35, and two attachment holes 38 with a welding nut 37 are provided at the tip end portion.
Is formed. This hinge mail 33 has a back door 39
If not installed, the weather strip 41 at the end of the roof panel 25 extended to form the drip groove 40
Since it is placed on the top, the state in which the insertion portion 35 is projected rearward is maintained (see FIG. 2).

On the other hand, the upper portion 43 of the backdoor body 42 of the backdoor 39
Of the inner panel 44 forming the
In the front part 45 and the stepped bottom part 46 as
Reinforce 47 is joined from the inside. And
A common insertion hole 48 is provided at the corresponding portion of the front surface portion 45 and the reinforcement 47, and a common attachment hole corresponding to the attachment hole 38 of the insertion portion 35 is provided at the corresponding portion portion of the bottom surface portion 46 and the reinforcement 47.
49 are formed respectively. The aforementioned hinge mail 33
When the back door 39 is attached, the weather strip 41 on which is attached abuts the bottom surface portion 46 at the position in front of the attachment hole 49. That is, the mounting hole 49 is exposed to the vehicle compartment R side. 50 is a sealing material, which is used to prevent water and dust from entering the insertion port 48, and is attached to the front surface portion 45 in advance so as to surround the insertion port 48.

A bead portion 51 is formed on the reinforcement 47 so as to project downward from the left and right sides of the insertion port 48. The bead portion 51 can also serve as a guide for the inserting portion 35 of the hinge mail 33 in order to increase the rigidity of the reinforcement 47 itself. That is, the opposing inner side surfaces 51a of the left and right bead portions 51 located on both the left and right sides of the insertion port 48 are attached to the tapered portion 36 of the insertion portion 35 so as to be in close contact with the insertion portion 35 of the hinge mail 33. It is in a corresponding tapered state, and the height is also adapted to the thickness size of the insertion portion 35. Further, a hook 52 is formed by cutting and raising in the portion corresponding to the tip of the insertion portion 35 in the reinforcement 47.

Next, how to attach the back door 39 will be described. First, lift the back door 39 to the height position of the hinge unit 28,
Then, the insertion opening 48 formed in the front surface portion 45 of the back door main body 42 is slightly inserted into the tip of the insertion portion 35 of the hinge mail 33 protruding rearward while being placed on the weather strip 41. Then, while slightly lifting the hinge mail 33 from the weather strip 41 at the lower side of the insertion portion 35, the back door 39 is horizontally moved toward the vehicle body side, and the insertion portion 35 of the hinge mail 33 is moved to the back door. Main body 42 outlet 48
Insert it inside. At this time, since the inner side surface 51a of the bead portion 51 formed on the reinforcement 47 serves as the guide surface of the insertion portion 35, the sealing material 50 attached to the front surface portion 45 is hinge mail.
The back door 39 is in a state of being positioned with respect to the hinge mail 33 without error when the back door 39 is brought into contact with the pushing portion 34 of 33 and the insertion is completed. Therefore, the mounting hole 38 with the welding nut 37 formed at the tip of the insertion portion 35 and the bottom portion of the back door body 42
The attachment hole 49 formed in 46 (and the reinforcement 47) is in a state of being matched with each other, and the tip end of the insertion portion 35 is engaged with the hook 52 formed by cutting and raising the reinforcement 47. And finally, the bolts 53 as "fixing means" are inserted from the passenger compartment R side into the mounting holes 49 of the back door main body 42 and the mounting holes 38 of the insertion portion 35 which are in a continuous state in agreement with each other. If the welding nut 37 is screwed and fixed, the attachment of the back door 39 is completed. In the back door 39 thus mounted, the building accuracy in the front-rear direction is ensured by the contact between the front surface portion 45 (sealing material 50) of the back door body 42 and the pressing portion 34, and the back door 39 is installed in the left-right direction. The assembling accuracy is secured by the contact between the inner side surface 51a of the bead portion 51 of the reinforcement 47 and the side end of the insertion portion 35, and the accuracy in the vertical direction is
This is ensured by the contact between the 47 (bottom surface portion 46) and the lower surface of the insertion portion 35, so that accurate mounting can always be performed with no mounting dimension error.

<Effects of the Invention> The mounting structure of the back door according to the present invention has the contents described above, and is different from the hinge mail on the vehicle body side in that the upper part of the back door body is formed on the vehicle body side corresponding surface. Since the hinge mail and the back door body are attached by inserting from the insertion port, it is not necessary to lift the back door higher than the height of the hinge mail (vehicle body) to be attached, and it is possible to move horizontally at that height position. It can be installed just by itself, and the work is very easy.

In addition, since the mounting location is only one part, the hinge mail and the upper part of the back door body, the number of man-hours is small, and the mounting location is not exposed to the outside.

[Brief description of drawings]

1 is a sectional view showing a back door mounting structure according to an embodiment of the present invention, FIG. 2 is a sectional view corresponding to FIG. 1 showing a first state of back door mounting work, and FIG. 3 is a hinge. FIG. 4 is a perspective view showing a mail and a reinforcement. FIG. 4 is a perspective view of a rear portion of an automobile showing a conventional example of the present invention.
FIG. 5 is a sectional view showing a partially disassembled state corresponding to the line V-V shown in FIG. 25 …… Roof panel (car body) 33 …… Hinge mail 39 …… Back door 42 …… Back door body 43 …… Upper part of back door body 45 …… Front part (body-side corresponding surface part) 48 …… Slot 53 …… Bolt (fixing means) S …… Hinge point

Claims (1)

[Claims] 1. An insertion opening formed on a corresponding surface portion of a back door main body having a closed cross-section structure to a vehicle body side corresponding to a hinge mail supported rotatably up and down around a hinge point set on the vehicle body side. The back door mounting structure is characterized in that the back door main body upper part is attached to the inserted hinge mail by a fixing means inserted from the vehicle interior side.