JPH01247813A - Fixture of small part to synthetic resin product - Google Patents

Abstract

PURPOSE:To eliminate a special work, ensure freedom from a crack and ensure an easy change to another small part by providing a connection surface in the mounting tool body of synthetic resin having a retaining portion for a small part and fitting the connection surface to the mounting portion of a fitted material via heating and deposition. CONSTITUTION:A retaining portion 51 consisting of an engagement well 51a is formed on the coupling surface of synthetic resin mounting tool 5. On the other hand, the mounting part 31 of an engagement piece 3 is formed on the engagement well 51a with a circular engagement piece 31b having a split groove 31a capable of insertion in and engagement with the well 51a. On the other hand, a projection 52 is formed on an engagement part 53 having an engagement surface for the tip of the mounting tool 5 and made in contact with the mounting portion of a fitted material. Then, a supersonic wave is applied thereto under pressure for bonding. No special processing, therefore, is required and a synthetic resin product can be fitted without any crack. Also, it is possible to change the product to another small part 3 arbitrarily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fixture for attaching small parts to synthetic resin products.

(Prior Art) Conventionally, there have been mounting tools for attaching small parts, especially small parts made of metal or small parts made of different synthetic resins, to synthetic resin products such as automobiles, electronic parts, home appliances, cameras, and aircraft. The small parts are attached to the synthetic resin product by using rivets or eyelet metal fittings and caulking the rivets or eyelet metal fittings into mounting holes formed on the mounting surfaces of the synthetic resin product and the small parts.

(Problem to be Solved by the Invention) However, when attaching small parts to a synthetic resin product using rivets or eyelet fittings as described above, mounting holes are formed on the mounting surfaces of the synthetic resin product and the small part, respectively. It is necessary to specially form the rivets and eyelets, and the processing is not only troublesome and time-consuming, but also has the problem that the synthetic resin products and small parts may crack due to the processing stress when caulking the rivets and eyelet fittings. Ta.

Further, according to the attachment means using rivets or eyelet fittings, once the small part is crimped to the synthetic resin product, the small part cannot be removed from the synthetic resin product, and it is difficult to replace it with another small part. There was a hearing that I couldn't do it.

An object of the present invention is to use a fixture body made of synthetic resin that is equipped with a holding part for freely attaching and detaching small parts, and by heat-welding and bonding the fixture body to a synthetic resin product. A small part that can be removably attached to the synthetic resin product via the fixture body without creating a special mounting hole on the product's mounting surface or cracking the synthetic resin product. The aim is to provide attachments for synthetic resin products.

(Means for Solving the Problems) The present invention is a fixture for attaching a small part (3) to a synthetic resin product (2), and the holding part (51) holds the small part (3) in a detachable manner. A fitting body (5) made of synthetic resin with
The coupling surface of the synthetic resin product (2) is heated and welded to the attachment part of the synthetic resin product (2), and the fixture body (5) is attached to the synthetic resin product (2).
), and the small parts (3) are combined with the synthetic resin product (
2) is characterized in that it can be detachably attached.

(Function) When attaching, for example, small metal parts to the synthetic resin product (2), the attachment body (5) is joined to the synthetic resin product (2) by heating and welding the bonding surface. death,
By holding the small part (3) in the holding part (51) of the fixture body (5), the synthetic resin product (2) can be held.
) The small part (3) can be attached to the synthetic resin product (2) without having to specially provide a mounting hole on the mounting surface or without cracking the synthetic resin product (2). be.

Furthermore, since the small part (3) can be freely attached to and removed from the holding part (51) of the fixture main body (5), it can be replaced with another small part (3) as desired, for example.

(Example) Examples of the fixture according to the present invention will be described below based on the drawings.

The drawings show an automobile visor to which the mounting device according to the present invention is applied, and the visor for automobile 1 shown in FIGS. It is a side door mounting type used by being attached to the window frame (10) of a side door (1) equipped with a channel (12), and its structure is such that the eaves part (21 ) and ears (22) of a side visor (synthetic resin product) (2) made of acrylic resin, which is inserted into the glass groove (11) of the window frame (10).
A locking fitting (small part) (3) is attached to the latch channel (12) made of rubber or felt in the glass groove (11) and held at +L.

The locking fitting (3) includes a mounting portion (31) that is attached to the ear portion (22) and a locking portion (32) that locks to the launch channel (12).

Also, (4) in FIG. 1 is a window glass.

Thus, the locking metal fittings (3) are detachably attached to the synthetic resin side visor (2) using the following fittings.

That is, as the mounting tool, there is a holding part (51) that holds the locking fitting (3) in a detachable manner, and the side visor (
2), and a connecting part (53) with a large number of protrusions (52) protruding from the connecting surface, is mainly made of the same acrylic as the side visor (2). It is made of resin.

Specifically, as shown in FIG. 2, as a means for holding the locking metal fitting (3) by the fixture main body (5), a locking member is attached to the connecting surface of the fixture main body (5) at the center in the width direction and extending from both upper and lower ends. , and the retaining part (51) is formed of a retaining recess (51a) having a circular intermediate part, while the locking fitting (3)
) with a circular engagement piece (31a) having a split groove (31a) that can be inserted into and locked into the engagement recess (51a).
), the engagement piece (3l b) is inserted into the engagement opening (51a) of the fixture body (5), and the engagement piece (3l b) is inserted into the engagement recess (51a). By being locked to the arcuate surface of 51a), the locking fitting (3) can be freely attached to and removed from the fitting main body (5).

Further, a large number of pyramid-shaped projections (52) are protruded from the end coupling surface of the fixture main body (5), as shown in FIG. 3, for example.

and a protrusion (5) on the coupling surface of the fixture body (5).
2) into contact with the attachment site of the side visor (2), then attach the attachment body (5) and the side visor (2).
) is held between the sound types and applied with ultrasonic waves while applying pressure, and the vibration heats and melts only the portion of the protrusion (52) that makes point contact with the mounting surface of the side visor (2), thereby forming the mounting body (5). is coupled to the side visor (2), and
The engaging piece (31b) of the locking metal fitting (3) is inserted into and held in the four engaging parts (51a) of the fixture body (5), and the locking metal fitting (3) is attached to the side visor (2). It was designed to be removably attached.

Therefore, according to the above-described attachment, only the portion of the protrusion (52) that makes point contact with the attachment portion of the side visor (2) is locally heated and melted by the vibration caused by the ultrasonic wave, so that the side visor (2) and Fixture body (5)
The parts other than the protrusion (52) will not lose their shape or crack (and can be reliably and firmly welded together).

Moreover, the locking fitting (3) is attached to the fitting main body (5).
The attachment body (5) can be attached to the side visor (2) in a detachable manner.
When heat welding the fixture body (5), the heat welding work can be performed without holding the locking metal fitting (3) on the fixture body (5). ) Locking metal fitting (3) attached to the holding part (51)
Since it can be removed, it can be replaced with another locking metal fitting (3).

Moreover, the ears (22) of the side visor (2)
), the heads of the rivets and eyelet fittings do not protrude from the inner side unlike when using lipets and eyelet fittings, so the upper edge of the window glass (4) does not touch their heads. The window glass can be opened and closed smoothly without making any noise or damaging the window glass.

Further, an engagement recess (51a) formed in the joint surface of the fixture body (5) and a mounting part (31) of the locking fitting (3)
For example, as shown in FIGS. 7 and 8, the shape of the fixture body may be a pair of doglegs or wedges facing each other, or as shown in FIGS. 9 and 10.
5), leaving a joint surface in the center, and attaching engagement steps (5) on both sides.
1b> (5l b) holding part (51)
The mounting portion (31) of the locking fitting (3) is formed by a two-pronged locking piece (31c) that is inserted and locked into each of the engagement step portions (5l b), The stopper (31c)
The locking fitting (3) may be removably held in the fixture body (5) by being inserted and locked into the space between each of the engagement step portions (5lb) and the side visor (2).

Furthermore, in the above-mentioned embodiment, although the shape of the projection (52) provided on the fixture body (5) is pyramidal, it can also be shaped into a spherical shape, for example, as shown in FIGS. Conical, cylindrical, and Figure 11 (d) (e) (he) (g) (ch)
The shape is not limited to any shape as long as the tip area is small, such as various wave shapes as shown in FIG.

Furthermore, in the above-mentioned embodiments, as an example of the use of the attachment of the present invention, the attachment fitting (3) was used to attach to the automobile visor (2). Not limited to installation, but for example, when attaching small parts, especially small metal parts or foreign synthetic resin small parts, to synthetic resin products in all fields such as electronic parts, home appliances, cameras, and aircraft. It can be widely applied as a fixture.

In this case, the holding means for attaching and detaching the small part (3) to the fixture body (5) may have various configurations as shown in FIGS. 12 to 20, for example.

The one shown in FIG. 12 has a holding part (51) consisting of a fitting recess (51d) formed on the outer surface of the fixture main body (5), and a fitting part (3) provided in the recess (51d). The mounting m (31) consisting of the parts is fitted and held, and the 13th
The figure shows a pair of retaining grooves (51) on the outer surface of the fixture body (5).
e) A holding part (51) consisting of (51e) is formed, and a mounting part (31) consisting of a fork-shaped locking piece provided on the small part is engaged and held in the holding part (51). be. In addition, FIG. 14 shows a holding part (51) consisting of a spherical recess (51f) opening on the outer surface side of the fixture body (5), and a spherical recess (51f) provided in the small part (3) in the recess (51f). A mounting part (31) consisting of a protrusion is removably fitted and held, and FIG. (51) and a fitting hole formed in the small part (3).
1) is removably inserted and held.

In addition, the one shown in Fig. 16 and Fig. 17 is the attachment main body (
5) A holding part (51) consisting of a screw hole (51h) is formed in the screw hole (51h), and a small part (3) is screwed and held by screwing the screw body (33) into the screw hole (51h), and a mounting tool. Main body (
5) is integrally formed with a holding part (51) consisting of a threaded part (51i), and the threaded part (51i) is fitted with a screw (34).
Small parts (3) are screwed and held through the screws.

Furthermore, what is shown in FIGS. 18 and 19 is a device in which a plurality of fixture bodies (5) are used to attach a plate-shaped small part (3) to a synthetic resin product (2). L that fits and holds the corner of the small part (3) on the fixture body (5)
A holding part (51) consisting of a letter-shaped fitting part (51j) is provided, and the corner part of the small part (3) is fitted and held in the holding part 1 (51). In this case, the shape of the fixture body (5) is rectangular as shown in FIG.
It may also have a circular shape as shown in FIG.

In addition, the synthetic resin material of the mounting body (5) may be a synthetic resin product (2
) may be used to ensure the fusion of the two and the strength to hold the small parts (3), or other resins of the same quality and type with good compatibility, that is, It may be a combination of other synthetic resins as long as it can ensure fusibility and retention strength; for example, a combination of a side visor body made of acrylic resin and a joined body made of polycarbonate. It may be.

(Effect of the invention) As described above, according to the fixture of the present invention, synthetic resin products (2)
When attaching the small part (3) to the small part (3),
) is used, and the fixture body (5) is made of synthetic resin and has a holding part (51) that can be freely attached and detached, and the fixture body (5) is provided with a bonding surface facing the synthetic resin product (2). A joining part (53) having a bonding part (53) with The small part (3) is bonded to the resin product (2) and held by the holding part (51) of the fixture body (5).
3) is attached to the synthetic resin product (2), it is necessary to provide a special mounting hole on the mounting surface of the synthetic resin product (2), or to remove cracked edges of the synthetic resin product (2). The small part (3) can be attached to the synthetic resin product (2) without having to do anything.
1), it is possible to carry out the work without holding the small part (3) when heat welding the fixture body (5) to the synthetic resin product (2). A small part (3) that allows easy welding work and is attached to the holding part (51) of the fixture body (5).
Since it can be freely attached and detached, it can be replaced with other small parts (3) at will.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted vertical cross-sectional view of an automobile visor to which a mounting device according to the present invention is applied, Fig. 2 is a perspective view of the locking metal fitting and the main body of the fitting, and Fig. 3 is a protrusion on the main body of the fitting. Fig. 4 is a vertical sectional view showing the protrusion of the attachment body in contact with the side visor, Fig. 5 is a partial enlarged view of the automobile visor, and Fig. 6 is a side view showing the entire visor. Figures 7 to 10 are explanatory diagrams showing another embodiment of the locking metal fitting and the fixture body, Figure 11 is an explanatory diagram showing another embodiment of the protrusion provided on the fixture body, and Figure 12 is an explanatory diagram showing another embodiment of the protrusion provided on the fixture body. to 20th
The figure is an explanatory view showing another embodiment of the small parts and the fixture body. (2)...Synthetic resin product (3)...Small parts (5)...Mounting tool body (51)...Holding part (53)・・・・・・Connecting part

Claims (1)

[Claims] 1) A fixture for attaching a small part (3) to a synthetic resin product (2), which is a fixture body (5) made of synthetic resin and equipped with a holding part (51) that holds the small part (3) in a detachable manner.
) is provided with a joint part (53) having a joint surface facing the synthetic resin product (2), and the joint surface of the fixture body (5) is heat-welded to the mounting site of the synthetic resin product (2). The accessory body (5) is coupled to the synthetic resin product (2), and the accessory component (3) is detachably attached to the synthetic resin product (2). Attachment tool for parts to synthetic resin products.