JP3530132B2 - Assembly means for assembling the piece to the wall - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for assembling pieces on a wall surface.

[0002]

BACKGROUND OF THE INVENTION One of the oldest assembly methods, and one widely used in the industry, is to secure with fastener means consisting of nuts and bolts. For example, this fixing method is widely used in the automobile industry. Nevertheless, this fixing method requires a considerable amount of time in order to fulfill the predetermined production requirements expected in the field today.

To overcome this drawback, screw tightening is generally performed by a compressed air screw driver. Nevertheless, such screwdrivers are bulky and therefore not suitable for use in hard-to-reach places.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an assembly means which allows a quick fixing in places which are difficult to access or where the available space is small.

[0005]

According to the present invention, the above object is achieved by the following assembling means for assembling a piece such as a car seat runner to a wall surface such as a floor of a vehicle. That is, the assembly means according to the invention comprises a bolt and a nut forming two parts of a fastener passing through a wall, said two parts having a reverse pitch, one of said two parts for fixing to said piece. The other of the two members has a fixing means for connecting to the wall surface, and the other end has thrust means for urging the one end connected to the wall surface. And the thrust means is elastically compressible in the axial direction of the fastener.

The term "reverse" pitch refers to one of the two members of the fastener, ie, the bolt, is prevented from rotating and the other, ie, the nut is free to rotate, without rotation of the nut. It is used to mean rotating the nut in the tightening direction by simply inserting the bolt. Or conversely, it means that the nut is rotated in the tightening direction, and conversely, when the fastener is once coupled, the nut is simply rotated by applying a pulling force to the bolt. In the assembling means according to the present invention, the member having the coupling means and the thrust means are installed between the wall surface and a fixing surface below the wall surface, the thrust means contacting the fixing surface and expanding, and thereby the coupling. Depresses the means, thereby preventing rotation of the member. Also,
When the member (bolt) fixed to the piece is biased to the other member (nut) of the fastener, the thrust means compresses, thereby separating the connecting means from the wall surface and connecting to the wall surface. The member (nut) being rotated is rotated, thereby fastening the fastener. When the thrust stops, especially when the piece abuts against the wall surface, the thrust means expands and presses the coupling means against the wall surface, thereby ending the tightening and preventing rotation of the related members. As a result, the fastener is tightened by simply pressing the piece against the wall without the use of tools and without the need for the operator to directly manipulate the two members of the fastener. If the piece is heavy enough, the thrust is applied by its own weight, which more easily secures the piece. Further, the elastically compressible thrust means serves to accommodate the working gap.

In a preferred embodiment of the invention, the bolt comprises a head having fixing means for fixing the bolt to the piece, and the nut has one end provided with the coupling means, and It has the other end with thrust means. In a preferred embodiment, the bolt and nut have multiple threads.

In a preferred embodiment, the bolt has an axial hole that allows passage of a disassembly tool, the disassembly tool cooperating with the inner surface of the thrust means and extending in line with one end of the shaft hole. This is a possible configuration. In a preferred embodiment, the inner surface of the thrust means is spaced from the outer bearing surface of the thrust means so that the thrust means is compressed by the disassembly tool biased to the inner surface through one end of the shaft hole. Is configured.

In a preferred embodiment, the disassembly tool has means for cooperating rotationally with the inner surface of the thrust means or with a member fixed thereto of the fastener of nuts and bolts. In a preferred embodiment, the coupling means frictionally cooperate with the wall surface. In a preferred embodiment, the bolt has a threaded rod extending to a centering tip to center it on the nut.

Other features and advantages of the invention will be apparent from reading the following description of specific non-limiting embodiments.

[0011]

1 to 3 are half of a longitudinal sectional view of an assembly means according to the invention, showing three steps of fixing a piece to a wall. FIG. 4 is a view similar to FIGS. 1 to 3 of the assembly means according to the invention, showing the disassembly operation.

Referring to the drawings, in the illustrated embodiment, the assembly means according to the invention is used to secure a car seat runner A to a car floor B. The floor B has a surface C which is fixed under the floor and is spaced apart and extends parallel to the floor. In this case, the surface C is formed by the web of channel members D fixed under the floor B. Surface C
May be formed by the surface of the piece in a fixed position with respect to the floor, but does not necessarily have to be fixed to the floor. The vehicle seat is fixed by fasteners consisting of nuts and bolts of the type described below.

The assembly means according to the present invention comprises a bolt generally indicated by 1 and a nut generally indicated by 2, the nut and the bolt being designed together to form a fastener. . The bolt 1 has a long axis 3 along which a head 4 is connected by a fixing part 5 to a threaded rod 6. The bolt 1 is tubular and has a shaft hole 7. The threaded rod 6 has a plurality of screws (or cracks) with a reverse pitch.
Have. The threaded rod 6 extends to the centering tip 8.

The bolt 1 is fixed to the runner A by crimping the fixing portion 5 in the hole passing through the runner A.
The fixing portion 5 has an outer rib or groove extending substantially parallel to the major axis 3 of the bolt 1, and locks the bolt 1 against rotation about the major axis with respect to the runner A. Strengthen. The nut 2 has a tapped hole 9 with a plurality of threads configured to have a reverse pitch.

The nut 2 has one end 10 forming a base having an end face 11 and an opposite end 12 having thrust means attached thereto. The thrust means consists of a spring, indicated generally at 13, which in this case is formed to rotate freely in a groove formed in or crimped in the opposite end 12 of the nut 2. It is attached to the nut 2 by a collar. The spring 13 has an outer bearing portion 13.1 opposite to the collar and a tap hole 9
Has an inner abutment 13.2 that extends to coincide with the open end of the.
In this case, the spring 13 is made of elastic material,
Moreover, it is elastically compressible in the axial direction of the nut.

The nut 2 is installed in the channel member D such that the tapped hole 9 extends from the floor B in line with the hole E.
The dimensions of spring 13 are such that spring 13 is prestressed between surface C and floor B. The spring 13 biases the surface C and thus presses the end surface of the base 10 against the floor B. Fixing is done by placing the sheet on the floor B so that the bolt 1 presses the nut 2.
The centering tip 8 guides the bolt 1 from the hole E to the tap hole 9 of the nut 2.

Under the seat weight, the threads of the threaded rod 6 of each bolt 1 urge the corresponding tap hole 9 of the nut 2 so that the bolt 1 imparts a thrust on the nut 2 and the center of the fastener. It acts to compress the spring 13 parallel to the axis 3. The end face 11 of the base 10 is thus separated from the floor B and the threads of the threaded rod 6 and the corresponding tap holes 9 of the nut 2 engage one another, thereby rotating the nut 2. Thereby the nut 2 is fastened to the threaded rod 6. Initial rotation of the nut 2 is facilitated by the presence of multiple threads on the threaded rod 6 and within the nut 2. In order to rotate the nut 2 more easily, the coefficient of friction of the spring 13 with respect to the surface C of the outer bearing part 13.1 is relatively small and the contact area is as small as possible.

When the runner A contacts the floor B, the bolt 1 stops thrusting the nut 2. Then, the spring 13 of each nut 2 expands to bring the end surface 11 of the base 10 of the nut 2 into contact with the floor B, and thus the fastening of the nut 2 onto the threaded rod 6 is completed. As will be appreciated, when traction is exerted on the seat, the end surface 11 of the base 10 of each nut 2 tends to be pressed against the floor B, thus strengthening the bond of the base 10 to the floor B, Counteracts any rotation of the nut 2. In order to obtain a good connection between the end surface 11 of the nut 2 and the floor B, the friction coefficient of the end surface 11 of the nut 2 with respect to the floor B is large. The end face 11 may also have tooth-like protrusions to improve its binding capacity to the surface of the floor B.
The end face 11 thus constitutes the coupling means.

Apart from the fastener of the present invention, the overall
It is necessary to use the tool represented by This tool has a rod 15 (Fig. 4). The rod 15 of the tool 14 is an inner surface of the spring 13 facing the outlet of the shaft hole 7, that is, the inner contact portion 1
3.2 It is inserted into the shaft hole 7 of the bolt 1 so as to bias the
In addition, the spring 1 is arranged so that the end surface 11 of the base 10 is separated from the floor B.
Compress 3. This compression is made easier and more effective by increasing the separation between the inner abutment 13.2 and the outer bearing, ie the outer bearing surface 13.1. Then, the nut 2 starts to rotate in the loosening direction. Tool 1 rod 1
The end of 5 preferably comprises a projection which cooperates with a corresponding relief on the inner abutment 13.2 which allows the rod 15 of the tool 14 to rotate with the nut 2. This allows the initial rotation of the nut 2 by the rotation of the tool 14 about the major axis 3.

To end the disassembly, a pressure is applied to the spring 13 and, at the same time, a traction force is applied on the sheet. Of course, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention described in the claims. In particular, the present invention can be implemented by largely converting the above embodiment. For example, the assembly means of the present invention may consist of a nut fixed to the runner and the head of a bolt which is mounted adjacent to the threaded rod 6 by a coupling means and has thrust means on the opposite side. The bolts can also be mounted to rotate with respect to the runner A and the nuts can be fixed to the floor B and vice versa.

Further, within the scope of the present invention, "bolt"
The term is used to include any type of threaded rod capable of receiving a nut, and in particular to include a stud (ie, a rod having two threaded ends and no head). It is used. Furthermore, tool 1
Instead of the inner abutment 13.2 of the spring 13, the end of the rod 15 of 4 may have means which can be connected with the nut 2 by rotation.

Although the threaded rod 6 and tapped hole 9 have been described as having multiple threads, the threaded rod 6 and tapped hole 9 may each have a single thread. Finally, the invention is not limited to assembling car seats to the floor of a car, but protects any type of fastening between a piece and a wall.

[Brief description of drawings]

FIG. 1 shows a half of a longitudinal cross section of an assembly means according to the invention showing a first step of fixing a piece to a wall.

FIG. 2 shows a half of a longitudinal section view of the assembly means of the invention showing the second step of fixing the piece to the wall.

FIG. 3 shows a half of a longitudinal section view of the assembly means of the invention showing the third step of fixing the pieces to the wall.

FIG. 4 is a half longitudinal section view of the assembly means according to the invention, showing the disassembly operation.

[Explanation of symbols]

A ... Car seat B ... Car floor C ... side D ... Web 1 ... bolt 2 ... Nut 3 ... long axis 4 head 5: Fixed part 6 ... Threaded rod 7 ... Shaft hole 8 ... Centering tip 9 ... Tap hole 13.1 ... Outer bearing 13.2 ... Inner contact part

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Claims (8)

(57) [Claims] 1. Assembly means for assembling a piece against a wall, comprising a bolt (1) and a nut (2) forming two parts of a fastener, said two parts (1, 2) having a reverse pitch. One of the two members (1) has a fixing means (5) for fixing to the piece, and the other (2) of the two members has a connecting means (11) for connecting to a wall surface at one end. Has thrust means (13) at its other end for urging the one end coupled to the wall surface and elastically compressible in the axial direction (3) of the fastener. Assembling means characterized by the above. 2. The bolt (1) has a head (4) with fixing means (5) for fixing the bolt to the piece, and the nut (2) at one end (10). Assembly means according to claim 1, characterized in that it has said coupling means (11) and said thrust means (13) at the other end (12). 3. Assembly means according to claim 1 or 2, characterized in that the bolt (1) and the nut (2) have a plurality of threads. 4. The bolt (1) has an axial hole (7) allowing passage of a disassembly tool (14), said disassembly tool co-operating with the inner surface (13.2) of said thrust means (13). Working,
Assembly means according to any one of claims 1 to 3, characterized in that it can be extended in line with one end of the axial hole (7). 5. The inner surface (1) of the thrust means (13)
3.2) is spaced apart from the outer bearing surface (13.1) of the thrust means (13) and is urged toward the inner surface via one end of the shaft hole (7). 1
Assembly means according to claim 4, characterized in that said thrust means are configured to be compressed by 4). 6. A means (15) for the disassembly tool (14) to co-rotate with the inner surface of the thrust means (13) or with one of the fasteners (2) consisting of nuts and bolts. ). Assembly means according to claim 4 or 5, characterized in that 7. Assembly means according to any one of the preceding claims, characterized in that the coupling means (11) cooperate with the wall surface by friction. 8. The bolt (1) according to claim 1, characterized in that it has a threaded rod (6) extending to a centering tip (8) for centering the nut (2). 7. Any one of 7 assembling means.