JPS5840326Y2 - Locking claw for attaching cylindrical parts - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in a locking pawl for attaching a cylindrical component made of synthetic resin or the like.

Conventionally, structures for attaching synthetic resin cylindrical parts, such as automobile air conditioning nozzles and coin pockets, to mounting members such as instrument panels, for example, have been constructed using cylindrical parts as shown in Figure 1. Side walls 1a, la of main body 1
, a locking pawl 3 surrounded by slits 2 on three sides, respectively.
. It is composed of

However, in such a structure, since a relatively narrow slit 2 is formed around the locking pawl 3, irregularly shaped burrs 4 are formed around the locking pawl by molding, as shown in FIG. If the burr 4 is not removed, the product value will be extremely reduced.

Further, the work of removing the burr 4 after molding was also very troublesome.

Moreover, if the slit 2 is formed around the locking pawl 3, air will leak from the slit 2 in the case of an air conditioning nozzle, and also in the case of a coin pocket, the fixing force of the locking pawl 3 will be reduced. When the claws were made larger to make them stronger, the slits 2 also became larger, causing problems such as the coins passing through and falling inside the mounting member such as the instrument panel.

Therefore, this invention actively generates pars in the slit area around the locking pawl so as to completely cover the slits, thereby eliminating the need to remove the pars and eliminating the risk of reducing the product value at all. At the same time, the thin tongue made of Paris prevents air leakage, etc.
The purpose is to solve the above problems.

This invention will be explained below based on the drawings.

FIG. 3 shows an embodiment of the present invention. In the figure, 1 is a main body of a part such as an air conditioning nozzle formed into a cylindrical shape from synthetic resin, etc., and the side wall 1a of this main body 1 is flush with the side wall 1a. At the top, a locking claw 3 surrounded by a recess 7 on three sides is attached to the side wall 1.
It is formed integrally with a.

1b is a flange portion projecting outward from the periphery of the opening of the main body 1.

This locking claw 3 is formed with a protrusion 3a in a direction perpendicular to the insertion direction (direction of arrow A), and the recess 7 is provided with a projection 3a for connecting the locking claw 3 and the main body 1, as shown in FIG. A thin tongue piece 8 is formed so as to be bridged.

This thin tongue piece 8 is integrally projected from the locking pawl 3 in the figure, and the tip of the tongue piece 8 is in contact with the main body 1 with a cut 9, but it is not engaged from the main body 1. A thin tongue piece 8 may be provided to protrude toward the circumference of the locking pawl 3, and a cut may be made at a location where it comes into contact with the locking pawl 3.

Further, as shown in FIG. 6, a recess 7 is formed so as to surround three sides of the locking claw 3 including one side opposite to the insertion direction of the main body 1 (same as the direction A shown in FIG. 3). A thin tongue piece 8 may be used. In this case, even if the cut 9 is formed at the place where the tongue piece 8 and the side wall 1a of the main body 1 contact, the cut 9 is formed at the place where the tongue piece 8 and the locking claw 3 come into contact. may be formed.

Although not shown, the locking pawl 3 is similarly formed on the opposite side wall of the main body 1.

The structure of one embodiment of the present invention has been described above. Next, the operation of the embodiment shown in FIGS. 3 and 4 will be explained using FIG. 5. The locking pawl 3 is formed on the side wall 1a. When the cylindrical main body 1 is inserted into the mounting hole of the instrument panel 5, which is the mounting member, from the insertion direction shown in FIG. When the main body 1 comes into contact with the opening edge 5a of the mounting hole of the main body 1 and deforms inside the main body 1 (indicated by the two-dot chain line), and when the main body 1 is completely inserted into the mounting hole, the locking pawl 3 engages with the main body 1 itself. It is elastically restored as shown by the solid line, and the protrusion 3a and the main body 1
The opening edge 5a of the mounting hole of the instrument panel 5 is sandwiched between the flange 1b of the instrument panel 5, and the main body 1 is reliably supported by the instrument panel 5.

FIG. 7 shows another embodiment of the present invention, in which the recess 7 surrounding the three sides of the locking claw 3, that is, the thin tongue piece 8, is formed relatively wide, and the locking claw 3 and the side wall 1a of the main body 1 are Both of them are integrally crosslinked.

In this way, when the width of the thin tongue piece 8 is increased, the locking claw 3 becomes more flexible and the attachment becomes easier.

Furthermore, in the embodiment shown in FIG. 8, the locking pawl 3 is entirely surrounded by a recess 7, and thin tongue pieces 8 are formed on the four sides of the locking pawl 3 and are continuous with the side wall 1a of the main body 1, so that the locking The piece 3 is elastically supported.

As explained above, this invention is a cylindrical part that is inserted into a mounting hole formed in a mounting member to be mounted, and on the side wall of the main body of the cylindrical part, on substantially the same plane as the main body of the cylindrical part.
A locking claw that is surrounded by a recess and can be engaged with a part of the mounting member is formed, and a thin tongue piece that bridges the locking claw and the main body is formed in the recess. This eliminates the risk of irregularly shaped burrs forming around the locking pawl, which would require laborious work to remove the burrs, and does not reduce the product value at all. The thin tongue piece has the effect of preventing air leakage, light leakage, etc.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the entire cylindrical part showing an example of a locking claw used in conventional mounting of a cylindrical part; Figs. 2A and B are an enlarged perspective view and an enlarged plan view of the locking claw; and Fig. 3 The figure is a side view of a cylindrical part showing an embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line A-A, and FIG. Fig. 6 is a side view of a cylindrical part showing another embodiment of the present invention, Fig. 7 shows still another embodiment, Fig. 7A is a side view of the cylindrical part, and Fig. 7B is a side view of the cylindrical part. A sectional view taken along the line B-B, FIG. 8 similarly shows another embodiment, and FIG. 8A is a side view of the cylindrical part.
Figure B is a sectional view taken along the line cc. 1...Main body, 1a...Side wall, 3...
...Latching claw, 5...Mounting member, 7...
- Concavity, 8 - Curved - Thin tongue piece.

Claims (1)

[Scope of utility model registration request] In a cylindrical part that is inserted into a mounting hole provided in a mounting member to be mounted, a side wall of the main body of the cylindrical part is surrounded by a concave portion on substantially the same plane as the side wall of the main body of the cylindrical part, and is surrounded by a concave portion of the mounting member. The cylindrical member mounting is characterized in that a locking claw that can be engaged is formed in a part thereof, and a thin tongue piece is formed in the recess to bridge the locking claw and the main body. .