JP2600128Y2 - Plastic push nut - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is a resilient plastic push nut for receiving a screw which is to be inserted into an opening in a support plate and screwed from the same side of the opening. A head plate mounted on the surface of the support plate when viewed in the assembling direction, and a shank formed to fit the opening of the support plate. Integrally joined together with the head plate,
The head plate and the upper part of the shank following the head plate are penetrated by a smooth hole serving to receive the thread of the screw, and the upper part of the shank is radial to the hole. That are divided by a first longitudinal slit extending therethrough.

[0002]

2. Description of the Related Art In a push nut of this type, the inner diameter of the hole is set to be smaller than the outer diameter of the screw into which the screw is to be inserted. Into the hole wall itself,
The divided shanks are pressed laterally away from each other. In this case, the shank outer wall is pressed firmly against the opening edge of the support plate.

[0003] With such a push nut, the closed lower portion of the push nut cannot be expanded and thus does not contribute to fixing, so that a sufficient tightening effect cannot be obtained. In addition, since the lower shank portion has no flexibility, it is difficult to screw in the screw, and there is a risk that the screw will be excessively rotated, broken and broken.

[0004]

The problem to be solved by the invention is to provide a push nut of the type mentioned at the beginning, in which the lower shank can also be used for fixing and the screw can be easily screwed on. It is to be.

[0005]

According to the invention, the shank is divided by a second longitudinal slit extending radially from the insertion end of the shank with respect to the bore. Wherein the second longitudinal slit is cut at right angles to the first longitudinal slit, and the end of the second longitudinal slit is at least the first longitudinal slit. To reach the end.

[0006]

According to the present invention, not only the above problem can be solved by simple means, but also a thin support plate can be used.
The push nut can be fixed equally well on a thick support plate. For thin plates,
The two projecting shank halves are greatly expanded apart from each other. Thereby, the holding power is significantly increased.
In the case of a thick support plate, the lower shank portion is also pressed firmly against the opening wall of the support plate, so that the holding force is also increased in this case.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

[0008] The push-in nut shown is a support plate 1
0 (FIG. 4) and serves to accommodate a screw 11 adapted to be screwed from the same side (FIGS. 5 and 6).

The elastic plastic push-in nut has a head plate 1 and a shank 2 integrally formed with the head plate and adapted to the opening 9 of the support plate 10. The head plate 1 and the shank 2 are provided with smooth holes 3 serving to accommodate the threads.
Is penetrated by In this case, since the inside diameter of the hole 3 is smaller than the outside diameter of the screw 11, the screw pushes its screw thread into the nut itself when screwed.

The head plate 1 and the upper part of the shank 2 which follows the head plate are divided by a first longitudinal slit 4 which extends radially with respect to the hole 3, whereby When the screw 11 is screwed in, the two shank halves are pressed in a direction away from each other (FIG. 5). The first longitudinal slit 4 is made as narrow as possible so that as much shank material as possible is provided for fixing at the opening 9 in the support plate.

The shank 2 is divided from the end 5 of the shank by a second longitudinal slit 6 extending radially to the bore 3 in order to also make the lower shank part available for fixing. ing. The second longitudinal slit 6 is cut at a right angle to the first longitudinal slit 4, and the end 7 of the second longitudinal slit 6 is formed at least in the first longitudinal slit 4. End 8 of
Has been reached. Thus, when the screw 11 is screwed in, both lower shank halves are also pressed in a direction away from the side (FIG. 6).

In order to achieve an effective widening of the shank 2 when the screw is screwed in, the two longitudinal slits 4, 6
The second longitudinal slit 6 is guided upwardly from the plug end 5 to the shank portion 2 ′ located below the head plate 1. Is more advantageous.

[0013] The push nut thus cut into the longitudinal slit from both sides has the same material and cross-sectional area as the known push nut with only one longitudinal slit, compared to the known push nut having only one longitudinal slit. It was found that the aperture had a retention force greater than twice. Furthermore, the holding force of the push nut according to the invention works equally well on thin and thick support plates.

Further, it has been found that the possibility of breaking the screw due to excessive rotation is sufficiently eliminated by double-cutting the longitudinal slit so as to cross each other.

[Brief description of the drawings]

1 shows a push nut according to the present invention,
FIG. 3 is a longitudinal sectional view shown along a line.

FIG. 2 is a front view of the push nut according to the present invention.

FIG. 3 is a plan view of the push nut according to the present invention;

FIG. 4 is a diagram illustrating a state in which the push nut according to the present invention is inserted into the opening of the thick support plate.

FIG. 5 is a view showing a push nut inserted into a thick support plate in a state in which screws are screwed.

FIG. 6 is a view showing a push nut inserted into a thin support plate in a state in which screws are screwed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Head plate, 2 shank, 2 'shank part, 3 holes, 4 longitudinal slits, 5 insertion end, 6 longitudinal slit, 7, 8 end, 9
Opening, 10 support plate, 11 screws

Claims (3)

(57) [Scope of request for utility model registration] 1. A resilient plastic push-in nut for receiving a screw which is inserted into an opening in a support plate and adapted to be screwed from the same side of the opening, the push-in nut being provided in the mounting direction. A head plate mounted on a surface of the support plate when viewed, and a shank formed to fit the opening of the support plate, wherein the shank is integrally connected to the head plate. The head plate and the upper part of the shank following the head plate are penetrated by a smooth hole serving to receive the thread of the screw together with the head plate. Of the type separated by a first longitudinal slit extending radially with respect to the bore, said shank (2) comprising: A second longitudinal slit (6) extending radially from said insertion end (5) to said hole (3), said second longitudinal slit (6) being The first longitudinal slit (4) is cut at a right angle to the first longitudinal slit (4), and the end (7) of the second longitudinal slit (6) is at least the same as that of the first longitudinal slit (4). A push nut made of plastic, characterized in that it extends to the end (8). 2. The end (7, 8) of the longitudinal slits (4, 6) overlaps.
Push nut described. 3. The second longitudinal slit (6) is guided upwardly from the plug end (5) to a shank portion located below the head plate (1). The push-in nut according to claim 2.