JP2516876Y2 - Fastener - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a fastener most suitable for mounting various relatively large parts to various equipment bodies.

[Prior art]

For example, in order to house and fix the headlamp housing in the mounting frame portion of the automobile headlamp, it has conventionally been necessary to perform all the work manually by a worker.

The reason for this is that the assembling of the two is arranged in a narrow place where there is relatively no margin, and there are many restrictions on the tool entry portion and the like for fastening them.

Therefore, when assembling the headlamp housing, etc.,
It took a lot of effort and time.

[Means for solving the problem]

Therefore, an object of the present invention is to provide a fastener capable of assembling and fixing the housings of various parts and the like in a narrow space with almost one-touch operation.

(1) That is, a substantially cylindrical main body 3 having at least a hollow portion 1 whose lower surface is open, and a fastening surface 2 that is fastened to a material 7 to be fastened is formed on the outer periphery, and a tip portion is the main body 3 Of the pin 4 which is housed in the hollow portion 1 so as to be able to move in and out of the open end face and whose outer peripheral edge of the tip is chamfered; The spring 5 interposed between the spring seat 18 at one end of the hollow portion
And a retaining means 6 formed between the pin 4 and the main body 3 so that the pin 4 does not protrude beyond the open end surface by a predetermined length or more. It is embedded and fixed in the hole of 7.

(2) In the fastener described in claim 2 of the utility model registration, in the claim 1, the rear end of the pin 4 is projected more than the main body 3.

[Action]

According to the fastener of the present invention, as shown in FIG.
Since the outer circumference of is substantially cylindrical, it can be embedded and fixed extremely easily by press fitting into the hole of the material to be fastened 7. The fastening surface 2 formed on the outer periphery of the main body 3 eliminates axial movement of the fastener within the hole of the material to be fastened 7, and thus a highly reliable fastener can be provided. Further, the present fastener has the pin 4 and the spring 5 built in the hollow portion 1, has a simple structure, is easily miniaturized, and is easily attached. Then, this fastener fits the material to be fastened 7 into the slide fitting portion 10 while slidingly contacting the surface of the support member 8. At this time, the tip of pin 4
11 is guided to the surface of the support member 8 and lifted up, and then the tip end portion 11 of the pin 4 is fitted into the hole 13 so that the material to be fastened 7 is fixed and prevented from coming off.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 4 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view thereof, FIG. 2 is a front view thereof, and FIGS. 3 to 4 are of a fastener 7 to be fastened by the present fastener. The fastening order is shown in order.

The fastener of this embodiment consists of approximately four parts as shown in FIG. That is, the main body 3 has a substantially cylindrical shape, the pin 4 accommodated therein, the retaining means 6 screwed to the rear end of the pin 4, and the spring 5.
The main body 3 is formed in a tubular shape, and an inner flange portion is provided at a rear end thereof, and the inner flange portion serves as a seating surface at one end of the spring 5. The outer circumference of the main body 3 is stepped, and two knurled surfaces are formed in an annular shape at the tip. A guide portion slightly smaller than the outer diameter of the knurled surface is formed at the rear end portion.

Next, the pin 4 has a huge tip 11 and is chamfered at the tip.
17 is formed. An outer screw is engraved on the rear end of the pin 4. A retaining means 6 composed of a nut is screwed onto the outer screw. Further, the other seating portion of the spring 5 is formed on the stepped surface of the enlarged portion of the tip portion 11.

In order to assemble such a fastener, first, the spring 5 is inserted from the rear end portion of the pin 4, or the pin 4 is inserted into the main body 3 with the spring 5 fitted to the main body 3.
Then, the retaining means 6 may be screwed to the rear end portion.

The fastener thus formed is embedded in the material to be fastened 7 as shown in FIG. 3 as an example. Various known methods are used for this burying. For example, when the fastener is heated, the boss portion of the material to be fastened 7 made of a synthetic resin molded product.
Press into 12. Alternatively, it can be inserted when the resin-made material to be fastened 7 is formed.

The material 7 to be fastened in this manner is brought into sliding contact with the surface of the support member 8, and the edge portion 14 of the material 7 to be fastened is fitted into the slide fitting portion 10. In this sliding contact state, the tip portion 11 of the pin 4
Abuts the support member 8, so that the pin 4 thereof is lifted upward in the figure against the spring 5. And
When the tip portion 11 is aligned with the hole 13, the pin 4 moves downward as shown in FIG.

The fastener of the present invention is used for various purposes, for example, as shown in FIG. 7, a slide fitting portion 10 formed in a box shape.
By inserting the fastener 16 of the fastened material 7 into the hole 13 from the direction of the arrow, the fastener 16 and the hole 13 can be engaged and the fastened material 7 can be fixed to the support member 8.

Next, FIG. 5 shows a second embodiment of the present invention. The difference between this embodiment and the first embodiment is the fastening surface 2 on the outer periphery of the main body 3. In this embodiment, the fastening surface 2 formed on the main body 3 is an arcuate knurled groove. The upper and lower tiers are formed so that their arcuate directions are opposite to each other.
By doing this, when embedded in, for example, the boss portion of the synthetic resin material, it is possible to reliably prevent the stopper surface 2 from slipping out in the axial direction. The fastening surface 2 may be provided only on the tip of the main body 3.

The material 7 to be fastened to which the fastening surface 2 is fastened may be a metal plate.

Next, FIG. 6 shows a third embodiment of the present invention, in which the hollow portion 1 of the main body 3 is formed in a bag shape,
A ring 15 is detachably fitted to the open end of the hollow portion 1 of the main body 3. The ring 15 has a ring-shaped part that is cut away, and the ring 15 itself is made of a spring material. Therefore, by fitting the ring 15 in the annular groove at the open end of the hollow portion 1 in a state where the diameter of the ring 15 is reduced, the pin 4 is fixed and prevented from coming off. The ring 15 constitutes the retaining means 6 of the present invention.

[Effect of device]

(1) Since the outer periphery of the main body 3 of the fastener of the present invention is formed into a substantially cylindrical shape, it can be embedded extremely easily by press fitting into the hole of the material to be fastened. And the main body 3
The fastening surface 2 on the outer periphery of the fastener blocks the axial movement of the fastener in the hole in which the fastener surface 2 is buried, and the fastener can be highly reliable. Further, since the main body of the fastener is formed in a cylindrical shape and the hollow portion 1 is internally provided with the pin 4 and the spring 5,
The spring 5 can be easily seated, the pin 4 can be easily inserted and assembled, the structure is simple, the reliability is high, and the size can be reduced, and the mass productivity is high. Further, in this fastener, the pin 4 is biased by the spring 5 in the protruding direction. Therefore, if the tip end of the pin 4 is inserted into the slide fitting portion 10 against the spring 5, the pin 4 is fitted into the hole 13 of the slide fitting portion 10 or the like. However, the material to be fastened is fixed so as not to come off.

Therefore, the fastening target material 7 can be fixed and prevented from coming off almost with one touch, and it can be a fastener of the fastening target material with particularly good assembling property.

(2) Next, according to the fastener described in claim 2 of the utility model, since the rear end of the pin 4 is projected more than the main body 3, the rear end of the pin 4 is pulled backward to be fastened. It is easy to release the engagement between the material 7 and the support member 8 and separate them.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention, FIG. 2 is a front view, and FIGS. 3 to 4 show the order of fastening the materials 7 to be fastened by the present fastener in order. 5 and 6 are second and third embodiments of the present invention, and FIG. 7 shows another method of using the fastener of the present invention. 1 ... Hollow part, 2 ... Fixing surface 3 ... Main body, 4 ... Pin 5 ... Spring, 6 ... Retaining means 7 ... Fastened material, 8 ... Support member 9 ... Head, 10 …… Slide fitting part 11 …… Tip part, 12 …… Boss part 13 …… Hole, 14 …… Edge part 15 …… Ring, 16 …… Fastener 17 …… Chamfer, 18 …… Spring seat

Claims (2)

(57) [Scope of utility model registration request] 1. A substantially cylindrical main body 3 having at least a hollow portion 1 whose lower surface is open, and a fastening surface 2 for fastening it to a material 7 to be fastened, and a tip portion of the main body 3. Of the pin 4 which is housed in the hollow portion 1 so as to be able to move in and out of the open end face and whose outer peripheral edge of the tip is chamfered; A spring 5 interposed between a spring seat 18 at one end of the hollow portion and a retaining member formed between the pin 4 and the main body 3 so that the pin 4 does not protrude beyond a predetermined length from the open end surface. Means 6 and the fastener, the outer periphery of which is embedded and fixed in the hole of the member to be fastened 7 by press fitting. 2. The fastener according to claim 1, wherein a rear end of the pin 4 is projected more than the main body 3.