JP2001088598A - Mat slip prevention member made of synthetic resin - Google Patents

Abstract

(57) [Problem] To prevent a stopper for fixing a piece mat to be further laid on an automobile carpet from being detached. A stopper (1) for fixing a piece mat (24) is provided with push pins (3) with one-way portions (4, 4 ...), and the push pins (3) are provided with holes (22) in a reinforcing cross member (21) of an automobile floor iron plate (20).
The more the external force acts on the pin 3, the more it is pushed into the space inside the cross member 21, and the stopper 1 does not come off the iron plate 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing a piece of mat from a floor carpet laid on the entire surface of a vehicle floor iron plate (also simply referred to as floor iron plate) of an automobile. The present invention relates to a synthetic resin mat shift preventing member for fixing a smut.

[0002]

2. Description of the Related Art As is well known, rugs such as carpets are laid on a vehicle floor iron plate to improve the livability of the vehicle.

[0003] This rug is fixed on a vehicle floor iron plate so as not to be displaced. In particular, a piece mat (including a carpet; the same applies hereinafter) is fixed so as to be detachable for washing or the like. I have. Various types of fixing members are known, and the following mat displacement preventing members have been proposed.

[0004] That is, a slit pin is integrally erected on a horizontal portion of a plate-shaped main body having a horizontal portion and a bent portion connected to each other, and a mounting bolt hole is formed in the bent portion. A bolt is inserted into the vehicle body, and the plate-shaped main body is fixed to the vehicle floor iron plate by tightening to a mountain-shaped ridge (cross member) provided horizontally on the vehicle floor iron plate of the automobile.

[0005] Then, by inserting an eyelet (also referred to as a grommet, which indicates a base) provided on the mat into the slit pin, the mat is detachably laid on the vehicle floor iron plate (for example, the actual opening). 61-117036).

[0006] By the way, the floor iron plate of recent automobiles is entirely covered with a rug (hereinafter referred to as a floor carpet) because of high quality orientation, and the floor carpet is also smaller. A mat, that is, a piece mat (also called a service mat) is laid. Even in this case, the mat shift preventing member as described above is used.

That is, for example, Japanese Utility Model Laid-Open No. 63-14933.
According to Japanese Patent Publication No. 4 and Japanese Utility Model Publication No. 63-160238,
A pin is integrally erected on a horizontal portion of a plate-shaped main body in which a horizontal portion and a bent portion are connected, a bolt hole is formed in the bent portion, and a bolt is inserted into the bolt hole to insert a bolt into the vehicle floor. The plate-shaped main body is fixed to the vehicle floor iron plate by tightening the raised portion of the iron plate via a floor carpet.

At this time, a metal plate such as a sheet slide bracket is interposed on the floor carpet to prevent excessive tightening of bolts and stabilize the fixing.

Then, by inserting an eyelet provided on the piece mat into the pin of the horizontal portion, the piece mat is detachably laid on the floor carpet.

[0010] These mat displacement preventing members can well withstand vibration of the vehicle body and prevent the mat from being displaced by the feet of passengers.
Since it is fixed, it is necessary to provide a nut on the back surface of the vehicle floor iron plate, so that the mounting work of the mat slip prevention member itself becomes complicated, and the number of parts increases.

[0011] Therefore, there is a demand that the resin should be inexpensive and easy to handle as a single resin product in which the number of parts of the mat slip prevention member is minimized. (For example, see Japanese Patent No. 913629).

That is, FIGS. 3 and 4 (FIG. 3 is a longitudinal sectional view, FIG. 4 is an explanatory view of its handling, (A) is a perspective view before mounting, and (B) is a perspective view after mounting). As shown in FIG.
1 and a bent portion 10 having a shape of a letter which also has an inclined surface and a horizontal surface.
2 and a hook body 104 provided at the end of the horizontal part 101 toward the bent part 102 side.
And a slit pin 105 provided downward at the horizontal end of the bent portion 102.

The method of using the mat slip prevention member 100 is as follows.
As shown in FIG. 3, the bent portion 102 in the shape of a letter “C” is brought into contact with the slit 102 without any gap along the inclined surface and the horizontal surface of the cross member 21. 105 is inserted and fixed.

A floor carpet is laid all over the vehicle floor iron plate 20, but is not shown.

Next, the edge of the piece mat 24 is laid along the foot of the cross member 21, and the eyelet 25 provided on the piece mat 24 is attached to one or two of Mat prevention member 10
When the hook mat 104 is hooked on the hook portion 104, the piece mat 24 can be fixed.

In order to remove the piece mat 24 for cleaning or the like, the piece mat 24 may be moved toward the cross member 21 and removed from the hook portions 104.

In the figure, reference numeral 111 denotes a mat deviation preventing rib provided on the upper surface of the bent portion 102 of the plate-shaped main body 103;
Reference numeral 12 denotes a plurality of slip preventing spikes provided on the lower surface of the horizontal portion 101 of the plate-shaped main body 103.

[0018]

However, in such a mat-made slip-preventing member 100 as a single resin product, one or two mat slip-preventing members 100 themselves are attached to the vehicle floor iron plate 20 or the mat slip-preventing member 100 is used. Although it is extremely easy to insert the eyelets 25 of the piece mat 24 into the hook portion 104 even when a plurality of pieces are used, the mat slip prevention member 100 may come off the vehicle floor iron plate 20 during use, or the piece mat may not be inserted. There was a problem that the eyelets 25 of the 24 came off the hook portion 104.

Therefore, when analyzing such inconvenience,
The following has been found. That is, as described above, the piece mat 24 may come off due to stepping on the foot of the passenger, or the piece mat 24 laid in the vicinity of the driving head may come off due to the habit of the driver. A wiring harness 26 (see FIG. 1) for connecting various types of vehicle electronic components recently mounted on the vehicle 20 is laid along the foot of the cross member 21. As shown in FIG. 4B, since the mat shift prevention member 100 is in a floating state, the horizontal portion 101
It turns out that the hook portion 104 provided on the upper side is turned upward, and the hook opening eventually becomes large, and the hook portion 104 is easily locked only by the eyelet 25 as a ring-shaped base.

Further, the mat slip prevention member 100 is made of a thin (1.8 mm to 2 mm standard iron plate) vehicle floor iron plate 2.
In order to attach the slit pin 105 to the mounting hole 22 due to a difference in the thickness of the floor carpet, the slit pin 105 is made of synthetic resin with the floor carpet interposed. In some cases, the amount is not sufficient, and in this case, it is assumed that the vehicle escapes due to vibration of the vehicle body.

Accordingly, the present invention has as its main object to solve the above-mentioned problems, and to further reduce the cost and facilitate the handling, while reducing the danger of the driver due to the displacement of the piece mat 24 due to an unexpected situation. The secondary purpose is to eliminate it.

[0022]

In order to achieve the above object, the present invention provides: 1) a floor carpet which is laid on a steel floor plate of an automobile, and a piece mat is removed on the floor carpet; In the case where the piece mat is laid using a synthetic resin mat slip prevention member composed of a plate-like body fixed and freely connected to a horizontal portion and a bent portion, the bent portion has A shaft of a push pin with a one-way portion for pushing into a mounting hole formed on the surface of the cross member of the floor iron plate is integrally provided at the time of injection molding, and the length of the shaft of the push pin is set to the length of the floor iron plate having the mounting hole formed therein. By being three times or more the plate thickness, the shaft of the push pin is gradually pushed into the space inside the cross member if an external force acts on the push pin during use. A mat shift preventing member; A synthetic resin mat prevention device comprising a one-way portion attached to a shaft of a push pin of a synthetic resin mat displacement prevention member provided with a cross-shaped shaft center and a fin projecting over the shaft in multiple stages. On the member,
Further, 3) a synthetic pin in which a slit pin to be inserted into an eyelet of the piece mat is integrally erected at the horizontal portion of the plate-shaped main body of the synthetic resin mat slip preventing member according to claim 1 or 2 at the time of injection molding. The gist is a resin mat displacement prevention member.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a front view, FIG. 1B is a plan view, FIG. 2A is a side view of FIG. 1A, and FIG. It is a horizontal sectional view of a push pin, and a part common to the above-mentioned prior art is omitted and needs to be supplemented.

First, an outline of an embodiment of the present invention will be described.

This synthetic resin (polyamide 6-6 or P
OM etc.) mat prevention member 1 is used for automobiles (passenger cars)
It is used when a piece of carpet (not shown) laid on the entire surface of the vehicle floor iron plate 20 and a piece mat (see FIG. 3) 24 are detachably laid. Although it is inexpensive, the piece mat 24 is prevented from coming off even in the event of an unexpected situation, and on the contrary, the piece mat 24 can be easily attached and detached.

The mat shift preventing member 1 is particularly
A slot pin (a pin with a slit along the axis and a bulging head) 2 suitable for the eyelet 25 of the smut 24;
A push pin 3 having a large number of locking fins (also simply referred to as one-way portions) 4, 4... Suitable for an attachment hole 22 opened (a simple drill opening, not a tap opening or the like) in a thin vehicle floor iron plate 20. The shape (usually the shape of a cross section of Mt. Fuji) of the reinforcing cross member 21 of the vehicle floor iron plate 20 is changed, and the wiring harness 26 is provided on the vehicle floor iron plate 20.
Even if the mat slip prevention member 1 does not come into contact with the vehicle floor iron plate 20, that is, even if the slit pin 2 is inclined, the predetermined diameter expanding force is always applied to the ring-shaped eyelet 25. , And a predetermined locking force is applied, and the push pin 3 having a large number of retaining fins 4, 4... Is pushed into the mounting hole 22 through the floor carpet. Even if the carpet has a difference between rigidity and thickness,
The penetration length of the mounting hole 22 of the thin vehicle floor iron plate 20 is short, that is, at least three times the thickness (for example, 1 mm or more) of the thickness of the floor iron plate (for example, a standard thickness of 1.8 mm to 2 mm). 0.8 mm, and if there is a floor carpet, the push pin 3 has a shaft (shank) whose push pin 3 protrudes from the floor iron plate 20 at least twice as long as the iron plate thickness. A predetermined fixing force acts on the push pin 3 regardless of the thickness of the floor carpet, especially if any external force (press external force) acts on the push pin 3 using the internal space of the cross member 21 during use. Since the one-way portion pushes the mat in the pushing direction so that it cannot be further removed, the mat slip prevention member 1 does not come off from the vehicle floor iron plate 20 and exhibits a fixing force equivalent to that of the conventional bolt nut. Have .

On the other hand, to remove the piece mat 24, the slit pin 2 is pinched, the diameter thereof is reduced, and the eyelet 25 is removed. If the floor carpet is to be replaced, the mat slip prevention member 1 can be easily removed from the vehicle floor iron plate 20 by using a lever-operating tool because the vehicle floor iron plate 20 is thin.

Next, the mat shift preventing member 1 as described above
Each part will be described in detail.

The plate-like main body 5 of the mat shift preventing member 1
Is a horizontal part 6 having a width of about 20 mm and a length of 80 mm in a plan view, on which the slit pin 2 is erected, and an inclined surface 7 having a length of about 30 mm (having a tilt angle of about 30 °) 7 and a length. About 30mm
And a bent portion 10 comprising a horizontal surface 9 having a length of about 30 mm and a push pin 3 provided downward and integrally therewith.

At the center of the upper surface of the plate-shaped main body 5, a raised rib 11 is formed in the length direction to maintain resin elasticity.
It resists an external force that bends the whole, and prevents lifting of the slit pin 2 during use and, as a result, its inclination as much as possible.

Next, a push pin 3 having a plurality of retaining fins 4, 4... (Also referred to as a one-way push pin or a push pin with retaining provided on the outer periphery of the shaft) will be described.

A push pin of this type is conventionally known as having a large number of elastic projections formed on the outer periphery of an insertion portion (Japanese Utility Model Laid-Open No. 50-152784). In the gazette, it is referred to as a press-fit type component fitting having an elastic fin. In Japanese Patent Publication No. 57-5964 and Japanese Patent Publication No. 2-6923, it is referred to as a plastic driving fastener. Although they are referred to as mating pins, each of the mounting holes is a deep hole in which the pin shaft (12) is immersed, and is driven by driving like a nail.

However, the push pin 3 of the present embodiment is
Can be pushed into the mounting hole 22 formed in the thin vehicle floor iron plate 20 by a fingertip like a thumbtack, and the floor carpet is interposed even after the mounting, so that the pressing is possible. It is gradually and irreversibly pushed by an external force, and is convenient as the mat displacement prevention member 1.

Therefore, the axis of the push pin 3 with retaining is connected to the cross-shaped shaft center 12 and the multi-stage retaining fin 4 in the axial direction.
Are projected integrally, and the retaining fins 4 are substantially square in plan view.

Further, the tip end of the push pin 3 with retaining is formed as a pyramid-shaped barbed bar 13 so as to be inserted into a hole opened in the floor carpet or to penetrate the floor carpet. Each of the retaining fins 4 is slightly inclined toward the base of the shaft center 12 to assist the retaining function. In addition, this multi-stage state is provided over substantially the entire axial length, and particularly, the multi-stage state is provided on the base side. The pitch is shrinking. In other words, the retaining of the shaft base is strengthened.

The umbrella-shaped head 1 of the push pin 3 with retaining member
Numeral 4 is formed on the upper surface of the horizontal surface 9 of the bent portion 10 of the plate-shaped main body 5 at the time of injection molding, and is pressed by a finger. Of course, even if driven by a small hammer, the plate-shaped main body 5 is not damaged.

Incidentally, the axial center 12 of the push pin 3 with retaining is set.
Is about 18mm long and one side of the retaining fin 4 is about 7m
m, the diagonal length is 8.3 to 7.9 mm, and the diameter is about 7
It is used for a circular mounting hole 22 of mmφ.

[0038]

According to the present invention, a push pin with a one-way portion is pressed into a mounting hole of a cross member of a floor iron plate with a fingertip and fixed, so that the thickness is small during use while being inexpensive and easy to handle. Since an external force acts on this push pin due to the presence of a separate floor carpet, the push pin may be gradually pushed into the space inside the cross member, that is, it is pushed more and more. It does not come off the floor iron plate. As a result, it is possible to solve the problems described in the above item. Further, the piece mat can be easily removed only by picking the slit pin.

[Brief description of the drawings]

FIG. 1 is an embodiment of the present invention, in which (A) is a front view and (B) is a plan view.

2 (A) is a side view of FIG. 1 (A), and FIG. 2 (B) is a horizontal sectional view of a push pin with retaining.

FIG. 3 is a conventional example.

FIG. 4 is a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Mat slip prevention member, 2 ... Slot pin, 3 ... Push pin, 4 ... Fin for retaining, 5 ... Plate body, 6 ... Horizontal part, 1
0: bent part, 20: floor iron plate, 22: mounting hole, 24: piece mat, 25: eyelet

Claims (3)

[Claims] 1. A board in which a floor carpet is laid on a floor iron plate of an automobile, a piece mat is detachably fixed on the floor carpet, and a horizontal portion and a bent portion are connected to each other. Using a synthetic resin mat-preventing member made of
In the case of laying a smut, a shaft of a push pin with a one-way portion for pushing into a mounting hole formed in a surface of the cross member of the floor iron plate is provided integrally with the bent portion at the time of injection molding, and the push pin is provided. By setting the length of the shaft to be at least three times the thickness of the floor iron plate provided with the mounting holes, if an external force acts on the push pin during use, the shaft of the push pin gradually moves into the inner space of the cross member. A mat-slip preventing member made of synthetic resin, characterized in that the member is pushed into the mat. 2. A one-way part comprising a one-way part attached to a shaft of a push pin of the synthetic resin mat deviation preventing member according to claim 1, and a cross-shaped axis and fins projecting over the axis in multiple stages. A mat slip prevention member made of synthetic resin. 3. A slit pin to be inserted into an eyelet of the piece mat is integrally provided upright at the horizontal portion of the plate-shaped main body of the synthetic resin mat deviation preventing member according to claim 1 or 2 at the time of injection molding. Mat slip prevention member made of synthetic resin.