JPH037603Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a fastener for fixing a plurality of plate-like members or for fixing a rod-like body such as a wire harness to a plate-like member.

(Prior Art) Conventionally, as shown in FIG. 5, this type of fastener has a substantially flat board 102 and a central shaft 103 that is vertically inserted into the mounting hole 2 from the bottom surface of the board 102. A locking piece 106 that has a locking surface 105 at the upper end and is elastically deformable is provided at the tip of the central shaft 103 symmetrically at a predetermined angle upwardly, and a locking piece 106 that is elastically deformable is provided on the top end of the locking surface 105 at a predetermined angle. A locking leg 104 having a neck portion provided above is integrally formed.

(Problem to be Solved) Therefore, in the fastener configured as described above, the wall thickness of the locking piece 106 is thin at the location where a large load is applied after being locked to the plate member 1. In this case, there were problems such as the connection part with the central shaft 103 turning white and eventually breaking.

Further, if the thickness of the engaging piece 106 is increased, there is a problem that the load is heavy when inserting the locking leg 104 into the mounting hole 2 of the plate-shaped member 1, and it is impossible to insert the locking leg 104 with a finger or the like.

(Means for Solving the Problems) The present invention was made to solve the above-mentioned problems of the conventional methods. It is an object of the present invention to provide a fastener that can be securely fixed without being damaged and without wobbling even if the fastener is applied.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, 3 is a fastener that can be inserted into the mounting hole 2 from the bottom surface of the substantially flat board 4. A central shaft 5 is provided vertically, and a locking surface 7 is provided at the top end of the central shaft 5 diagonally upward at a predetermined angle symmetrically.
and an elastically deformable locking piece 8, with a neck 9 provided above the locking surface 7, and a rigid connecting piece 1 connecting the central shaft 5 and the upper end of the neck 9.
It is connected by 0.

Reference numeral 4 denotes a substrate, which is approximately flat and has an electric wire W in this example.
A protrusion for preventing slippage is provided on the lower surface of the end in order to fix the wire harness W, in which the wire harnesses 1 are bound together with a band T made of adhesive vinyl tape or the like, to the upper surface.

Reference numeral 5 denotes a central shaft, which has a substantially flat plate shape and extends vertically from the central lower surface of the substrate 4 so as to be inserted into the mounting hole 2.

Reference numeral 6 denotes a locking leg, which has a locking surface 7 at its upper end extending diagonally upward at a predetermined angle symmetrically from the tip of the central shaft 5, is elastically deformable, and has a flat inner surface in cross section. A semi-cylindrical locking piece 8 is provided, a substantially tongue-shaped neck 9 is provided above the locking surface 7, and a rigid joint piece 10 connects the central shaft 5 and the upper end of the neck 9.
It is connected with.

Reference numeral 10 denotes a joint piece, which connects the central shaft 5 and the upper end of the neck portion 9, has rigidity, and is formed so that the included angle with the central shaft 5 is smaller than that of the locking piece 8; Also, this joint piece 1
A thin hinge portion 11 is formed on the upper surface of the base on the side of the central shaft 5 and the lower surface of the base on the neck portion 9 side.

Next, the operation and effects of this embodiment configured as described above will be explained.

First, a plurality of electric wires W1 are wrapped and tied in advance with a band T made of adhesive vinyl tape, etc., and the wire harness W is brought into contact with the upper surface of the board 4, and the wire harness W is wrapped around the band T made of adhesive vinyl tape or the like. Twist, wrap and secure.

After that, the locking leg 6 of the fastener 3 is attached to the plate member 1.
When the locking piece 8 of the locking leg 6 is guided by the inner peripheral edge of the mounting hole 2 and is elastically deformed toward the central shaft 5 side, the connecting piece 10 is The central shaft 5 is connected by a thin hinge portion 11 formed on the upper surface of the base on the central shaft 5 side and the lower surface of the base on the neck 9 side.
At the same time as the locking piece 8 passes through the mounting hole 2, the locking piece 8 is restored to its original position, the locking surface 7 is engaged with the lower surface of the plate member 1, and the neck portion 9 is mounted. The fastener 3 comes into contact with the inner peripheral edge of the hole 2 and is engaged with the plate member 1 .

At this time, if a large load is applied in the pulling direction, the locking surface 7 at the upper end of the locking piece 8 is pressed downward by the lower surface of the mounting hole 2 of the plate-like member 1, and the locking piece 8 is moved to the center shaft 5. On the other hand, when it moves in the expanding direction, the upper end of the neck 9 expands more with respect to the central axis 5 than the lower end due to the difference in the angle between the locking piece 8 and the connecting piece 10 with respect to the central axis 5. Joint piece 1
0 has rigidity except for the thin hinge portions 11 at the bases on both sides. Therefore, the upper end of the neck portion 9 is expanded by pressing the upper end of the neck portion 9 in a tight manner to firmly secure the elastic attachment to the inner peripheral edge of the mounting hole 2. This can be sufficiently prevented from coming off. In addition, since the connecting piece 10 has a thin hinge portion 11 formed on the upper surface of the base on the central shaft 5 side and the lower surface of the base on the neck portion 9 side, when inserting the locking leg portion 6 into the mounting hole 2 of the plate-shaped member 1, It can be inserted with just a push with a finger without any resistance. Furthermore, since the neck portion 9 is elastically engaged with the inner circumferential edge of the attachment hole 2 in an expanded manner, it can be fixed to the attachment hole 2 without play.

(Effects of the invention) Now, with the above structure of the invention,
It can be easily fixed at places where loads are applied by just pressing with your fingers, and it can be securely fixed without breaking even when loads are applied, especially when the upper end of the neck is resistant to loads in the pull-out direction. Since it expands more widely with respect to the central axis than the lower end side, it firmly and elastically locks to the inner periphery of the mounting hole in an expanded shape, and works together with the locking surface to sufficiently prevent it from coming off without play. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the fastener of the present invention, Figs. 2 and 3 are partially cutaway front views showing the operation, and Fig. 4 is a front view showing the fastener of another embodiment. ,
FIG. 5 is a front view of a prior art fastener. DESCRIPTION OF SYMBOLS 1... Plate member, 2... Mounting hole, 3... Fastener, 4... Board, 5... Central shaft, 6... Locking leg, 7... Locking surface, 8... Locking Piece 9... Neck;
10... Joint piece, 11... Thin hinge part.

Claims (1)

[Scope of utility model registration request] An integrally formed fastener made of synthetic resin or the like that is elastically engaged with the inner periphery of a mounting hole penetrating through a plate-like member in an expanded manner, and is inserted into the mounting hole from the bottom surface of the board and a substantially flat board. A central shaft is provided vertically, and a locking piece that extends diagonally upward at a predetermined angle symmetrically at the upper end and is elastically deformable is provided at the tip of the central shaft, and The neck portion is placed above the locking surface, and the central shaft and the upper end of the neck portion are connected by a rigid connecting piece, and the connecting piece is configured such that an angle between the connecting piece and the central axis is smaller than that of the locking piece. 1. A fastener characterized in that the joint piece is formed with a thin hinge portion at a base on the central shaft side and a base on the neck side.