JPH0439452Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a fastening structure for vehicle equipment, and particularly relates to an improvement in the case where a reinforcing member made of metal or the like is attached to the back side of a resin equipment.

(Prior Art) Conventionally, as a fastening structure for vehicle equipment, for example, as disclosed in Japanese Utility Model Publication No. 59-25700,
When fastening a metal reinforcing member to the back of a resin instrument panel using multiple screw members, a cylindrical boss portion is integrally formed at each screw location on the instrument panel, and each of the boss portions is By screwing the screw member into the boss part through the insertion hole of the reinforcing member with the tip in contact with the periphery of the insertion hole of the reinforcing member, the two members can be fastened while maintaining the distance corresponding to the height of the boss part. What it does is known.

(Problems to be Solved by the Invention) However, in such a fastening structure, there are the following problems when setting the wall thickness of the boss portion. In other words, if the wall thickness of the boss part is set thin, it will not be possible to secure sufficient surface pressure between the tip of the boss part and the reinforcing member during fastening, and as a result, the fastened state will cause vibrations of the vehicle body. A situation arises in which it gradually loosens as a result. In particular, when the diameter of the insertion hole provided in the reinforcing member is a blank hole that is larger than the inner diameter of the boss, a part of the tip of the boss that should come into contact with the periphery of the insertion hole faces the insertion hole. This becomes even more noticeable since the vehicle is fastened in the state in which it is fastened. still,
When connecting two members at multiple locations, it becomes difficult to match the holes in both members due to differences in machining accuracy and coefficient of thermal expansion, so as in the above case, the hole diameter of one member is adjusted to match the hole diameter of the other member. Generally, it is set larger than that of .

On the other hand, if the wall thickness of the boss part is set thick,
When a resin accessory is injection molded in a mold together with the boss, sink marks as injection molding defects are likely to occur near the joint of the equipment with the boss, and this sink mark may cause damage during fastening. , and there is also the problem of poor appearance.

The present invention has been developed in view of the above, and its purpose is to improve the structure of the boss part that is integrally formed on the resin equipment as described above, and to improve the injection molding of the equipment. It is an object of the present invention to provide a fastening structure for vehicle accessories that can sufficiently secure surface pressure during fastening while preventing the occurrence of sink marks during fastening.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is that the equipment provided facing the interior of the vehicle is made of injection molded resin. A fastening structure for a vehicle accessory in which reinforcing members are attached at predetermined intervals by a plurality of fastening members to the back surface of the vehicle equipment has the following configuration.

That is, a boss portion protruding toward the reinforcing member is formed on the back surface of the equipment in correspondence with each of the fastening members. The boss portion includes a substantially cylindrical insertion portion into which the fastening member is inserted or screwed and at least a portion of the tip abuts the reinforcing member during fastening, and a substantially cylindrical insertion portion provided at a predetermined distance on the outer periphery of the insertion portion. , and a pressing portion whose tip substantially entire area comes into contact with the reinforcing member when fastened. Then, the tip of the insertion portion and the tip of the pressing portion are set to be located on the same plane, and the diameter of the hole through which the fastening member of the reinforcing member is inserted is set to be larger than the inner diameter of the insertion portion. and the reinforcing member is fastened by the fastening member with its boss portion pressed against the rear surface of the equipment.

(Function) With the above configuration, in the vehicle equipment fastening structure of the present invention, the fastening member is inserted or screwed into the insertion portion of each boss part of the resin equipment through the hole of the reinforcing member, and the reinforcing member is attached to the equipment. When the bosses are in pressure contact with the back surface of the insertion part, the tip of the insertion part through which the fastening member is inserted or screwed will not only come into contact with the reinforcing member at the boss part, but also the outer circumferential side of the insertion part. By abutting the reinforcing member over almost the entire area of the tip of the pressing part, even if a part of the tip of the insertion part faces the insertion hole of the reinforcing member, the boss part and the reinforcing member will not be connected to each other. Sufficient surface pressure can be ensured between the two.

Moreover, the insertion part and the pressing part of the boss part are
They are formed integrally with the resin equipment separately at a predetermined distance from each other, and their wall thickness is not set to be particularly thick, so the boss of the equipment is formed during injection molding of the equipment. This means that it is possible to prevent sink marks from occurring near the connecting parts.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

1 and 2 show an instrument panel A as a vehicle accessory. This instrument panel A has a glove box 1 on the passenger seat side, and the glove box 1 has a hinge section at the lower end. It is designed to be opened and closed by a front cover 2 having a front cover 2a. The front cover 2 is formed into a hollow shape by overlapping an outer panel 3 and an inner panel 4 facing the inside of the vehicle, and the outer panel 3 and the inner panel 4 are both made of injection molded resin. . A reinforcement 5 as a reinforcing member with a closed cross section is disposed inside the front lid 2, and the reinforcement 5 is fastened together with the inner panel 4 to the back surface of the outer panel 3. .

The first embodiment of the present invention is applied to a structure in which the reinforcement 5 is fastened together with the inner panel 4 to the back surface of the outer panel 3.

That is, on the back surface of the outer panel 3, a plurality of boss portions 6, 6, . is formed. As shown in FIGS. 3 and 4 in detail, each of the boss portions 6 has a tip that abuts the peripheral edge of an insertion hole 9 provided in the fastening seat portion 5a of the reinforcement 5, and serves as a fastening member. A substantially cylindrical insertion portion 6a into which the screw member 8 is screwed through the insertion hole 7 provided in the inner panel 4 and the insertion hole 9 of the reinforcement 5; It consists of a substantially cylindrical pressing portion 6b provided therein.

The tip of the insertion portion 6a and the tip of the pressing portion 6b are set to be located on the same plane,
When the screw member 8 is screwed into the insertion portion 6a, that is, when fastened, substantially the entire area of the tip of the pressing portion 6b comes into contact with the inner panel 4 in the same way as the tip of the insertion portion 6a. Further, the diameter of the insertion hole 9 of the reinforcement 5 is set larger than the inner diameter of the insertion portion 6a. By screwing in the screw member 8, the reinforcement 5 and the inner panel 4 are fastened together with the boss portion 6 in pressure contact with the back surface of the outer panel 3.

Therefore, in the fastening structure of the first embodiment, the metal reinforcement 5 and the resin inner panel 4 are overlapped on the back surface of the resin outer panel 3 of the front lid 2. When the screw member 8 is screwed into the boss portion 6 (insertion portion 6a) of the outer panel 3 through the insertion hole 7 of the inner panel 4 and the insertion hole 9 of the reinforcement 5, the boss portion 6 Not only is the tip of the screwed insertion portion 6a pressed against the peripheral edge of the insertion hole 9 of the reinforcement 5, but also the pressing portion 6b on the outer peripheral side of the insertion portion 6a is pressed against the reinforcement 4. and touch it. For this reason, the above-mentioned reinforcement 5
The diameter of the insertion hole 9 is set larger than the inner diameter of the insertion portion 6a, and part or all of the distal end surface of the insertion portion 6a faces the insertion hole 9, and the inner panel 4
Even when the pressing part 6b is fastened without contacting the reinforcement 5 or the inner panel 4, sufficient contact pressure can be ensured over almost the entire area of the tip surface of the pressing part 6b, and therefore the vehicle body Loosening of the fastened state due to vibration can be reliably prevented.

Furthermore, the insertion portion 6a and the pressing portion 6b of the boss portion 6 are integrally formed on the resin outer panel 3 while being separated from each other by a predetermined distance, and their wall thickness is sufficient to ensure surface pressure. Since the outer panel 3 is not set to be particularly thick, there will be no sink marks as injection molding defects near the connection part with the boss part 6 of the outer panel 3 during injection molding of the outer panel 3. It is effective for

FIG. 5 shows a fastening structure for vehicle accessories as a second embodiment of the present invention, in which a metal reinforcing member 12 is attached to the back surface of a resin-made tool 11 facing the interior of the vehicle. They are fastened using a plurality of sets of bolts 13 and nuts 15, which serve as fastening members, while maintaining a distance of . In other words, the above equipment 1
1 is integrally formed with a boss portion 14 that protrudes toward the reinforcing member 12, and the boss portion 14 is connected to the bolt 13.
An insertion part 14a is inserted through the insertion part 14a, and at least a part of the tip abuts the periphery of the insertion hole 16 of the reinforcing member 12 when fastened. The reinforcing member 12 is configured by a pressing part 14b that comes into contact with the reinforcing member 12, and the reinforcing member 12 presses the bolt 13 at each boss part 14 against the back surface of the equipment 11.
and the nut 15 are fastened in a pressure-contact state.

It goes without saying that the fastening structure of the second embodiment can also provide the same effects as the fastening structure of the first embodiment.

Note that the present invention is not limited to the first and second embodiments described above, but includes various other modifications. For example, in the first embodiment, the pressing part 6b of the boss part 6 formed on the accessory (outer panel 3 of the front lid 2) was formed into a cylindrical shape concentric with the insertion part 6a, but as shown in FIG. It may also have a rectangular cylindrical shape. In short, the pressing part 6b is the insertion part 6
What is necessary is to form them so that they are located at a predetermined distance on the outer periphery of a, and their tips come into contact with the reinforcing member when fastened.

In addition, if it is necessary to set the height of the boss portion 6 to be large, a problem arises in terms of the strength of the mold for injection molding the equipment, so in order to avoid this problem, the pressing portion 6b is As shown in FIG. 7 and FIG. 8, the shape may be partially discontinuous in the circumferential direction.

(Effects of the invention) As described above, according to the fastening structure of the vehicle equipment of the present invention, the boss part integrally formed on the resin equipment has an insertion part into which the fastening member is inserted or screwed, and an insertion part into which the fastening member is inserted or screwed. and a pressing part that can come into contact with a reinforcing member located at a predetermined distance from the outer periphery of the equipment. It is possible to secure sufficient surface pressure between the reinforcing member and the reinforcing member, and it is possible to perform a strong fastening that will not loosen even when the vehicle body vibrates.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIGS. 1 to 4 show the first embodiment. FIG. 1 is an enlarged sectional view taken along the line - in FIG. 2, and FIG. FIG. 3 is an enlarged view of the main part of FIG. 1, and FIG. 4 is a schematic plan view showing the shape of the boss portion. FIG. 5 is a sectional view showing the second embodiment, and FIGS. 6 to 8 are views corresponding to FIG. 4 showing modified examples. 3... Outer panel (equipment), 5... Reinforcement (reinforcing member), 6, 14... Boss section, 6a, 14a... Insertion section, 6b, 14b...
Pressing part, 8... Screw member (fastening member), 9, 16
...Insertion hole, 11...Equipment, 12...Reinforcement member, 13...Bolt (fastening member).

Claims (1)

[Scope of utility model registration request] Vehicle equipment in which the equipment installed facing the interior of the vehicle is made of injection molded resin, and reinforcing members are attached to the back side of the equipment using a plurality of fastening members at predetermined intervals. The fastening structure is such that a boss portion protruding toward the reinforcing member is formed on the back surface of the equipment in correspondence with each of the fastening members, and each of the fastening members is inserted or screwed into the boss portion. and a substantially cylindrical insertion portion with at least a part of the tip abutting the reinforcing member when fastened; and a substantially cylindrical insertion portion provided at a predetermined distance on the outer periphery of the insertion portion, so that substantially the entire area of the tip comes into contact with the reinforcing member when fastening. The tip of the insertion portion and the tip of the pressing portion are set to be located on the same plane, and the diameter of the hole through which the fastening member of the reinforcing member is inserted is as described above. The vehicle equipment is set to be larger than the inner diameter of the insertion part, and is fastened by the fastening member with the reinforcing member being in pressure contact with the rear surface of the equipment at its boss portion. Fastening structure.