JPH029989B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a tightening plate made of synthetic resin that allows a tightening plate to be attached to a stepping portion of an automobile door opening to be easily and quickly attached to a mounting board of the automobile body. Regarding the joint structure of the king plate.

As is well known, recently, kicking plates that are attached to protect the vehicle body are made of synthetic resin instead of metal.

This conversion of materials has advantages over metal materials, such as manufacturing advantages, cost advantages, and lighter vehicle bodies, but these advantages are limited to utilizing the properties of the materials themselves, and are not suitable for automobiles. Attachment to the main body was generally done using screws, much the same as with metal materials. For this reason, the assembly of the vehicle body on the assembly line was no different from the conventional method, and it was necessary to fasten each component with screws. In addition, these synthetic resin kicking plates are generally weaker than metal ones, and because they are molded by removing unnecessary parts to save material and form problems,
If a sudden tightening torque is applied when screwing, there is a risk of damage, and there are also problems such as local wrinkles occurring due to excessive tightening. Furthermore, since the molded parts themselves are made of synthetic resin, there is no need to worry about rust; however, since metal screws made of iron are still used as set screws, rust can stain the surface of the car body. I was afraid.

The present invention has been researched and developed in view of the problems encountered in attaching relatively large-sized stiffening plates made of synthetic resin. A plurality of engagement legs are integrally molded in advance on the surface, and on the other hand, engagement holes are formed at positions corresponding to each engagement leg on the mounting board of the automobile body to which this is fixed, and the engagement is facilitated. In addition, at least one of the plurality of engagement legs to be molded is configured such that its outer diameter can be expanded by pushing a wedge member into the engagement hole. It is an object of the present invention to provide a joining structure for a synthetic resin stiffening plate which can be easily and quickly fixed by later inserting a wedge member therein.

Particularly, one of the features of the present invention is that the engaging legs, which serve as means for fixing to the mounting board, are integrally molded during the molding of the tightening plate, and the tightening plate and the tightening plate fixed by this are integrally formed. The fixing means is always present together, and when fixing to the mounting board, the work of assembling the two is omitted, so that the work can be done quickly. Furthermore, by making the engaging leg, which is the fixing means, made of the same material as the plate and having a structure in which the fixation is achieved by expanding the outer diameter by pushing in the wedge member, the disadvantages of conventional screw fixing, such as excessive This is to prevent the risk of damage due to excessive tightening torque and the occurrence of localized waving, and furthermore, by not using iron screws, the problem of rusting has been eliminated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be described in detail below based on illustrative embodiments. First, in the embodiment shown here, a kicking plate 1 (hereinafter referred to as the plate) made of synthetic resin is attached to a stepping part 2 of an automobile door opening (hereinafter referred to as the mounting board).
It is called the mounting board. ), Fig. 1 shows the state in which it is used, Fig. 2 shows an exploded perspective view of the main parts with some parts cut away, and Fig. 3 shows the part partially shown in cross section. It is an enlarged exploded perspective view of.

The plate 1 shown in this example is a mounting board 2
It is formed into a long plate that can cover and protect almost the entire length of the plate, and the part along one edge side of the plate has a bent part for straddling the rain return protrusion 3 formed on the mounting board. 4 is formed over the entire length. Two engaging legs 5 and 6 are integrally provided on the flat mounting surface (lower surface) that avoids the upper bent portion of the mounting board 2. The mounting board 2 has insertion holes 7 and 8 into which the respective insertion legs are inserted.

Of the two engaging legs shown here, one engaging leg 5 is formed as a simple round bar-shaped protrusion, and the other engaging leg 6 is formed of a plurality of split leg pieces 6 whose outer diameter is expandable.
It is formed as consisting of a... and,
The insertion hole 7 of the mounting board that receives these insertion legs,
Reference numeral 8 designates an insertion hole 7 that receives the insertion leg 5 as a circular hole that matches the cross section of the insertion leg 5, and the other insertion hole 8 has an oval shape with a width that can accommodate the insertion leg 6. Each hole is formed as a hole.

The engaging leg 6 made up of the plurality of split leg pieces 6a hangs down from the lower surface of the recess 9 formed by recessing the base of the plate below, and is surrounded by the split leg pieces 6a. An insertion hole 10 is formed in the center of the recess 9 so as to pass through the center of the recess 9 and extend below the leg. This insertion hole 10 is a hole for receiving a wedge member 11 that is pushed in to expand the outer diameter of the insertion hole 6, and a plurality of wedge members 11 are provided on the inner circumferential surface near the opening thereof to protrude along the circumferential direction. Projections 12 are provided, and protrusions 1 projecting in a chevron shape at aligned positions are provided on the inner surface of each divided leg piece 6a.
3, and by protruding these protrusions 13, a reduced diameter portion is provided in the middle of the length of the insertion hole 10.

On the other hand, the wedge member 11 that is pushed into this insertion portion is composed of a round bar-shaped shaft portion 11a and a collar-shaped head portion 11b that is integrally provided at the upper end of this shaft portion.
A has 14 threads on the circumference from the base to the middle of the length.
A diameter-reduced portion 15 is provided by reducing the diameter halfway from the screw thread toward the tip, and an expanded-diameter portion 16 is provided at the tip. Ten-shaped groove 1 for hanging a screwdriver
7 is formed.

The shaft portion 11a of this wedge member has a threaded peripheral surface having a diameter that is approximately the same as the inner diameter of the insertion hole 10, and the overall length is longer than the length of the insertion hole 10. The outer diameter of the reduced diameter part 15 is the projection part 1
When the reduced diameter part 15 is positioned at the reduced diameter part of the insertion hole so that the inner diameter of the reduced diameter part formed by It is formed so that it is in an upward position.

In this way, when the plate 1 integrally equipped with the two engagement legs 5 and 6 on the mounting surface is attached to the mounting board 2, the engagement legs are placed in the engagement holes 7 and 8 that are formed so that they can be reversed. 5 and 6, and then inserting the wedge member 11 into the insertion hole 10 provided in one of the engagement legs 6 to expand the split leg piece 6a outward, thereby attaching it to the mounting board.

In this case, the wedge member 11 may be inserted into the insertion hole 10 after the insertion leg 6 is inserted into the hole 8 to expand the split leg piece 6a.
If the engagement leg 6 is inserted into the insertion hole 8 while being temporarily locked at 0 and then pushed in, the attachment work will be further facilitated.

That is, the shaft portion 11a of the wedge member 11 is inserted into the insertion hole 10 of the engagement leg 6 formed above, and the expanded diameter portion 16 at the tip thereof is passed through the reduced diameter portion formed by the protrusion portion 13 to insert the shaft. The reduced diameter part 15 of the part is inserted into this insertion hole 10
The wedge member is held temporarily in advance by aligning it with the reduced diameter portion of the wedge member. FIG. 4 shows this state. In this state, since the reduced diameter portion 15 of the wedge member and the reduced diameter portion of the insertion hole 10 are aligned to the same diameter as described above, the shaft portion 11a is attached to the insertion hole 10. The engaging leg 6 that has received the wedge retains its original shape and can be easily inserted into the engaging hole 8 in this state, and the wedge member 11 lifts its head 11b to the upper surface of the recess 9. It will be kept in good condition.

FIG. 5 shows that after holding the wedge member in a locked state, the engaging leg 6 is inserted into the engaging hole 8 of the mounting board, and then the floating head 11b of the wedge member is pressed to release the shaft portion 11a. Insert the entire length into the insertion hole 10 and insert the insertion hole 8
This figure shows the state in which the fixing of the engaging leg 6 to the engaging leg 6 has been completed, and the protruding portion 13 of each split leg piece 6a is pushed outward by the pushing of the shaft portion 11a, and the engaging leg 6 is
will expand on the opposite side of the mounting board to firmly fix the plate 1. At this time, the head 11b of the wedge member fits into the recess 9, and the plate 1
This will create a flat board surface that will be flush with the top surface of the board.

In this way, the plate 1 is attached to the mounting board 2 by inserting the engagement legs 5 and 6 into the engagement holes 7 and 8.
Next, the wedge member 1 is inserted into the insertion hole 10 provided in one of the engagement legs.
In this embodiment, the wedge member 11 that has been pushed in is further inserted into the head 11b.
By applying a screwdriver to the groove 17 provided in the screwdriver and twisting the screwdriver, the inserted shaft portion 11a can be pulled up from the insertion hole 10 and the expansion of the engagement leg 8 can be released.

That is, since the shaft portion 11a provided with the thread 14 is formed to have approximately the same diameter as the inner diameter of the insertion hole 10, it will not pass over the protrusion 12 provided on the inner peripheral surface of the insertion hole 10 when being inserted. While being pushed in, screw thread 1
4 is inserted into the insertion hole in a state of being engaged with this. Therefore, when it is twisted by a screwdriver, it is rolled up using the protrusion 12 as a guide, raising the head 11b again and aligning the reduced diameter portion 15 of the shaft portion 11a with the reduced diameter portion of the insertion hole. Therefore, the extrusion of the protrusion 13 is released, and each divided leg piece returns to its original shape and its diameter is reduced, so that it can be pulled out from the insertion hole as is. Then, the rolled-up shaft portion 11a is held in a temporary state by the engagement leg 6 by hooking the expanded diameter portion 16 onto the projection portion 13, so that the plate 1 cannot be removed from the mounting board in this state. can. Of course, the plate that has been removed in this way is inserted again with each of the engaging legs 5 and 6 into the engaging holes 7 and 8.
Needless to say, it can be fixed to the mounting board by pushing the wedge member 11.

By the way, as mentioned above, the wedge member 11 is inserted into the insertion hole 1.
Holding plate 1 temporarily at
When fixing the wedge member and the engaging leg, it is possible to greatly speed up the work by simply pushing it in, which is far more advantageous than the conventional method of fixing with screws. The relationship is not limited to this example.

Figures 6 and 7 and Figures 8 to 10 of the drawings embody other embodiments, and in particular, each of these embodiments is designed to fix the plate 1 with the mounting board 2 and then release the fixed state. This is another embodiment in which the wedge member 11 inserted into the insertion hole 10 can be easily pulled out.

First, in the example shown in FIGS. 6 and 7, the thread 14 formed on the shaft portion 11a of the wedge member 11 in the previous embodiment is
is removed to make the peripheral surface of this shaft part a smooth surface, and in conjunction with this, a protrusion 1 is formed on the inner peripheral surface of the insertion hole 10.
In this case, instead of removing the head 11b of the wedge member 11, a notch 18 is formed in the lower surface of the head 11b of the wedge member 11 into which a tool such as a flat head screwdriver can be inserted. Mounting board 2 for plate 1 in this embodiment
The fixing method for the wedge member is exactly the same as in the previous embodiment, and is carried out by inserting the engaging leg 6 into the engaging hole 8 and then pressing the head of the wedge member. When releasing this fixation, insert a tool into the notch 18 and pry the head 11b.
The protrusion 13 provided on each split leg piece 6a is received by the reduced diameter portion 15 of the shaft portion 11a to reduce the diameter of the expanded engagement leg 8 to its original state again so that it can be pulled out from the engagement hole 8. This is what I did.

In this embodiment, a second reduced diameter portion 19 is provided on the peripheral surface of the shaft portion near the reduced diameter portion 15 of the shaft portion 11a, and when the entire shaft portion is pushed into the insertion hole 10, a projection provided on each split leg piece is formed. The portion 13 is engaged with the second reduced diameter portion 19 to prevent the wedge member from coming off arbitrarily and releasing the fixed state.

Next, in the embodiment shown in FIGS. 8 to 10, the wedge member 11
This is another embodiment in which a chevron-shaped projection 20 is provided on the lower surface of the head of the plate 1, and an identical chevron-shaped projection 21 is provided on the upper surface of the recess 9 of the plate 1 to oppose this.

In the embodiment shown here, when the wedge member 11 temporarily held in the insertion hole 10 of the engagement leg 6 is pressed to fix the plate 1, the protrusions 20 and 21 are made to have different shapes so that they do not collide with each other. Push the shaft 11 into the insertion hole 10 so that the protrusion 20 abuts the upper surface of the recess 9 and the other protrusion 21 abuts the lower surface of the head 11b, expanding the engagement leg 6 and removing the plate. Perform fixation. This fixation is released by hanging a tool such as a screwdriver in the groove 22 formed on the upper surface of the head 11b and twisting the groove. That is, by this twisting operation, the head 1
When 1b is rotated, the protrusion 20 provided on its lower surface
collides with the side surface of the protrusion 21 of the recess 9, and the mutually inclined side surfaces rub against each other, so that the rotated head is pushed up and the shaft portion 1 inserted into the insertion hole 10 is pushed up.
1a will be pulled out. The shaft portion 11a in this embodiment is provided with an expanded diameter portion 23 in the middle of its length, and a reduced diameter portion 15 is provided between this expanded diameter portion and the expanded diameter portion 16 at the tip. On the entry side 6, the inner diameter of the insertion hole 10 passing through the center is made larger than the diameter of the expanded diameter part 23, and the diameter of the tip part is reduced.
The reduced diameter portion 15 of the shaft portion is fitted into this reduced diameter portion so that the wedge member 11 can be held in a temporarily locked state as in the other embodiments. When the engagement leg 6 is inserted into the engagement hole 8 and the wedge member 11 is then pressed,
The expanded diameter portion 23 is inserted into the reduced diameter portion at the tip so that the engagement leg 6 can be expanded.

The present invention has been explained above based on two or three embodiments. When the plate 1 main body is molded, the engaging legs 5 and 6 shown in each of the above embodiments are molded integrally with the main body of the plate 1. The number of these engaging legs is increased depending on the size, shape, etc., and at least one of these engaging legs has an outer diameter that is reduced by pushing in a wedge member as explained in the previous embodiment. This is a retractable leg that can be expanded.

Therefore, according to the present invention configured in this way,
When installing the above-mentioned locking plate on the body of an automobile, insert the locking leg provided on the mounting surface of the plate into the locking hole previously opened in the body, and then insert one of the locking legs If the wedge member of the extensible insertion leg is pushed in, it will be fixed to the insertion hole, so it can be fixed very easily and quickly, and the plate fixed in this way is necessary. When the wedge member is pulled up, the wedge member is pulled up to release the engagement leg and disengage from the engagement hole, so it can be easily detached from the body. Moreover, in this case, by temporarily holding the wedge member in the insertion hole of the engagement leg, the wedge member can be attached to the plate body, so there is no risk of powder loss. It will become easier to handle and work on assembly lines etc. will be dramatically improved.

Furthermore, in the present invention, the plate is fixed by pushing the wedge member into the insertion hole provided in the insertion leg and fixing it by expanding the wedge member, so that damage caused by excessive tightening torque caused by conventional screw fixing,
There are no problems such as waving, and therefore much more stable work is ensured compared to conventional fixing methods.The engaging leg is made of the same material as the plate, that is, the locking plate, and the wedge member is not used. By making it a resin molded product, rust can be eliminated, making it possible to completely eliminate stains caused by rust.

In the above embodiment, only one of the two engaging legs provided is expandable, but it goes without saying that all the engaging legs may be expandable.

Also, one of the insertion holes was formed as a circular hole and the other as an oblong hole, but in this case, the circular hole is used as a reference hole for mounting positioning of the plate, and the other oblong hole is used as a circular hole. This is to absorb errors in the position of the insertion holes or molding errors between the insertion legs, and also to absorb distortion due to thermal deformation of the resin molded product. It is desirable that all but one of the holes be oval holes, which is advantageous for smooth and accurate fixing to the mounting board.

Furthermore, in the above embodiment, the case where the locking plate and the wedge member that is pushed into the insertion leg provided on this plate are separately molded, but the opening edge of the insertion hole that passes through the center of the insertion hole at the lower end of the wedge member, that is, the enlarged diameter portion 16 in the above embodiment.
is positioned, and the wedge member is integrally molded with the resin molding with the wedge member erected directly above the insertion hole by connecting the opening edge and the outer circumferential surface of the expanded diameter part with a thin piece. Alternatively, during fixation, the thin piece may be cut by pushing in a wedge member, and the thin piece may be pushed into the insertion hole as it is. Of course, in this case, the disadvantage of complicating the mold is unavoidable, but since the fixing work is further simplified, work efficiency is further improved on mass-produced assembly lines, and it is economically viable.

Further, in the above embodiments, the case where the wedge member is molded from the same material as the plate has been described, but the gist of the present invention will not be impaired even if the wedge member is molded from a corrosion-resistant metal material. In other words, the conventional screw fastening method involves screwing metal screws directly onto the metal plate, so even if the plate itself is painted, the paint film peels off and corrodes as the screws are screwed in, or the screws themselves corrode. However, in the present invention, the wedge member to be pushed in does not come into direct contact with the plate, so it does not damage the coating film. Needless to say, this will not impede its effectiveness.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory perspective view showing an example of use, FIG. The figure is an enlarged exploded perspective view showing the part shown in the above figure as a partial cross section, Figure 4 is an explanatory view with a partial cross section showing the wedge member temporarily held in the insertion hole of the engagement leg, and Figure 5 6 is a partial cross-sectional explanatory diagram showing the fixed state in which the wedge member is pushed into the insertion hole of the engagement leg and the leg piece is expanded. FIG. FIG. 7 is a partial cross-sectional view showing another embodiment in which the wedge member shown in the above figure is pushed in and the leg pieces are expanded and fixed, and FIG. An enlarged exploded perspective view with a partial cross section of main parts showing another embodiment,
FIG. 9 is a partial cross-sectional explanatory view showing the wedge member temporarily held in the insertion hole of the engagement leg, and FIG. 10 is a partial cross-sectional view showing the wedge member in the fixed state. 1 is a synthetic resin locking plate, 2 is a mounting board, 5 and 6 are engagement legs, 7 and 8 are engagement holes, 10
11 is a wedge member, 11a is a shaft portion of the wedge member, 11b is a head portion of the wedge member, 15 is a reduced diameter portion, and 16 is an expanded diameter portion.

Claims (1)

[Claims] 1 a mounting board 2 provided on the body of an automobile;
It consists of a locking plate 1 made of synthetic resin that is fixed to a mounting board 2, and at least two engaging legs 5, 6 are integrally provided at a distance on the mounting surface of the locking plate 1, and the mounting board 2 is fixed to the mounting board 2. In this case, engagement holes 7 and 8 are opened corresponding to the above-mentioned engagement legs 5 and 6, and one of the engagement holes 7 is used as a reference engagement hole and the other engagement holes are formed in a long hole shape. At least one of the engaging legs 6 is provided with an insertion hole 10 extending from the upper surface of the plate main body along the center of the leg into which a wedge member 11 having a screw thread 14 is inserted on the peripheral surface of the shaft, and the leg end is expanded. It is divided into a plurality of possible leg pieces 6a, . . . and is provided with a protrusion 12 on the inner peripheral surface of the insertion hole 10,
After inserting the engagement legs of the locking plate into the respective engagement holes of the mounting board, the wedge member 11 is pushed in to spread the leg ends apart and fixed, and the wedge member is twisted. Screw thread 14 on the shaft of the handle
A joint structure for a locking plate of an automobile, which is made removable by rolling up the protrusion 12 as a guide to release the legs from the leg ends.