JPH0530661B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an insert for a headrest for an automobile, and more particularly to a headrest insert in which a headrest stay is movably mounted.

(Prior Art) In recent years, automobile headrests whose height can be adjusted according to the sitting height of the occupant are often used. A variety of functions are used to adjust the height, and one of them is a stay support tube with a hollow headrest insert 10a and a through hole 11a on the side, as shown in FIG. A shaped part 12a is provided at the lower part of the insert, and the cylindrical part 1
After inserting the stay 13a into the through hole 11
Insert the clip 14a into the
By engaging the stay 13a with the notch 15a provided in the stay 13a, the stay 13a is inserted into the insert 10a.
A type that can be moved in stages is used.

(Problems to be Solved by the Invention) However, these inserts are often integrally molded with a cushioning material such as a polyurethane foam on the outer surface within the headrest mold, and as described above, there are holes for insertion such as the clip 14a. In the case of a clip having a hole 11a on the outer surface, the liquid raw material of polyurethane often enters the hole, which tends to impair the function of the clip and furthermore the sliding movement of the stay. On the other hand, the hollow insert is composed of plastic halves 16a and 17a which are divided into upper and lower halves in order to mount the stay, but the lower body 17a has an insertion hole opening upward and downward, such as the stay supporting cylindrical part 12a. In addition, as mentioned above, it is necessary to provide a through hole 11a for clip insertion perpendicular to the insertion hole in the cylindrical portion, and a slide mechanism perpendicular to the mold opening direction in a mold for injection molding or the like used for the molding. The problem is that the mold is complicated. Therefore, the present invention seeks to provide a headrest insert with a novel structure that eliminates these drawbacks.

(Means for Solving the Problems) The gist of the present invention is to provide a headrest insert in which a stay is movably mounted in a hollow insert body, a half body having a stay insertion tube inside, An insert main body is constituted by a half body having a contact portion that abuts the upper end surface of the cylinder,
The headrest insert is characterized in that a retaining portion for a stay locking tool is formed at a contact portion between the end surface of the insertion tube and the opposing portion.

(Function) The headrest insert of the present invention is provided with a retaining portion for the stay locking tool at the abutment portion between the upper end surface of the insertion tube provided inside the lower half body and the opposing lower end surface provided in the upper half body. Since a locking tool such as a clip is held in the holding part, there is no need to provide a through hole perpendicular to the insertion path on the side surface of the stay insertion tube, and the structure of the mold can be simplified. Since the holding part of the locking tool is inside the insert main body, even if a cushioning material such as polyurethane foam is integrally molded on the outer surface of the headrest insert in the headrest mold, the urethane raw material etc. will not be in the stay locking tool holding part. There is almost no possibility of it getting in, and it will not interfere with the locking function of the stay locking tool.

(Example) Fig. 1 is a perspective view of a headrest insert according to an embodiment of the present invention before assembly, Fig. 2 is a central vertical sectional view after assembly, and Figs. 3 and 4 are the opposite views of Fig. 2. They are a sectional view taken along the line A-A and a sectional view taken along the line B-B of the insertion tube. FIGS. 5A and 5B are end views of the abutting portion and the insertion tube in other embodiments, respectively, and FIG. It is a sectional view taken along the E line. FIGS. 6A, 6B, and 6C are end views of the opposing portion and the insertion tube in still another embodiment, and a sectional view taken along the line FF in the abutting state.
Figure 7 shows C of Figure 2 in the insert after assembly.
-C line (left side) sectional view, and FIG. 8 is a DD line (right side) sectional view. FIG. 9 is a sectional view of the headrest insert of the present invention covered with a cushioning material and a skin material.

The head rest insert of the present invention is composed of an insert main body 10 consisting of a lower half body 20 and an upper half body 30 which are divided into upper and lower halves, a head rest stay 40 and a stay locking tool 50.

The lower insert half body 20 consists of a substantially box-shaped outer shell 21 that opens upward, and has a stay insertion tube 22 integrally provided at a predetermined position inside the outer shell 21 . Stay insertion tube 2
2 is a stay insertion hole 23 that penetrates vertically in the center.
The stay insertion hole 2 is provided in the upper end surface 24 of the stay insertion hole 2.
One half 25c of a holding portion 25 of a stay locking device 50 such as a clip, which will be described later, is formed so as to surround the opening 3. The holding portion 25c has a clip 50.
It is formed so as to be able to place clips, etc., to prevent the clips, etc. from falling off, and not to inhibit the degree of freedom of the elastic legs. In the embodiment shown in FIG. A recess 25c is provided on the upper end surface 24 of the stay insertion tube 22, surrounding the stay insertion hole 23, and allowing the elastic legs of the clip 50 to expand.

As shown in FIGS. 5A, 5B, and 5C, this holding part 25 is provided with a plurality of protrusions 26 on the upper end surface 24a of the stay insertion tube 22a for locking stay locking tools 50a such as clips, and Lower end surface 34a of portion 32a
By providing a wall 35 surrounding the clip etc., a retaining portion 25a of the stay locking tool may be formed between both end surfaces 24a, 34a, and as shown in FIG.
As shown in B and C, a wall 27 facing the upper end surface 24b of the stay insertion cylinder is provided upright, and a side wall 38 is provided on the end surface 34b of the other opposing portion 32b in a direction perpendicular to the wall 27, thereby engaging the stay between both end surfaces. A holding portion 25b of a stopper may be formed. It goes without saying that the side wall 38 may be attached to the side surface of the insertion tube 22b. In the figure, the dashed line indicates the clip 50b.

The insert upper half body 30 consists of a box-shaped outer shell 31 that is opened downward and is closed over the box-shaped outer shell 21 of the lower half body 20, and the upper stay insertion tube 22 of the lower half body 20 is inserted inside the box-shaped outer shell 31. A contact portion 32 having an end surface that abuts the end surface 24 is integrally provided vertically. This contacting part 32 is open in the longitudinal direction of at least one side thereof, and consists of a protrusion such as a groove with a space 33 in the center in the longitudinal direction, and its lower end surface 34 is open in the longitudinal direction of the above-mentioned space 33.
The opening at the lower end of 3 faces the stay insertion hole 23 of the lower half body 20, and the remaining lower surface thereof faces the locking tool holding part one-half 25c to form a holding part 25. That is, the upper end surface 24 of the stay insertion tube 22 and the lower end surface 34 of the opposing portion 32 form a holding portion 25 that clamps and holds the stay locking tool 50 such as a clip as described above. It should be noted that the length (height) of the opposing portion 32 and the insertion tube 22 should be such that they are in contact with each other, and either may be longer or shorter. Moreover, it is preferable that the central cavity 33 of the opposing portion be formed as a guide groove for the stay 40 as shown in FIG.

In the figure, 29 and 39 are reinforcing ribs provided on the lower insert half 20 and the upper half 30, respectively, and the rib 39 on the upper half is formed with a cutout in the center as shown in FIG. , the stay 40 is movable. Further, 60 is a fixing seat for fixing the lower insert half body 20 and the upper half body 30 with screws 61 or the like after they are closed. In addition, when this insert is closed, the outer shells 31 and 21 of the upper half body 30 and the lower half body 20 are formed with stepped opening edges as shown in FIG. 2 so that they fit into each other and come into close contact. It is desirable to keep it. The upper and lower halves of the insert are molded from plastic by injection molding.

The headrest stay 40 is made of a metal rod or a metal tube, etc., and has a notch 42 on at least one side of its leg 41, and has a notch 42 provided on at least one side of the leg 41, and the lower insert half 2
It can be installed in the stay insertion tube 22 of No. 0. The illustrated stay 40 has an inverted U-shape in which two legs 41 are connected at their upper ends, but each leg 41 may be independent.

The stay locking tool 50 elastically locks into the notch 42 of the stay 40 within the insert body to position the stay 40, and may be of any shape as long as it fulfills this function. As an example, a clip made of a substantially U-shaped steel wire is shown. As shown in FIG. 4, one leg 51 of the clip 50 extends in a substantially straight line from a U-shaped bent portion, the other leg 52 draws an arc separating from said one leg 51 halfway, and then extends from said one leg 51. The legs 51 and the ends thereof are formed to be substantially parallel to each other.
As shown in the figure, the arc is formed to draw approximately the same arc as the outer periphery of the stay 40, and the distance between the two legs 51 and 52 is such that the stay 40 can be held between them. It is being formed.

As shown in FIG.
0, and after the legs 41 of the stay are inserted between the legs of the clip 50 and into the stay insertion hole 23, the upper half body 30 of the insert is placed on the lower half body. It is closed and fixed in place. At this time, the clip 50 is held between the upper end 24 of the stay insertion tube 22 and the lower end surface 34, as shown. Therefore, one straight leg 51 of the clip 50 is connected to the stay 40.
As the legs move up and down, only the legs can be opened as shown by the dashed line in Figure 4 or closed as shown in the solid line.
When the legs are closed, that is, when the legs 51 of the clip fit into the notches 42 of the stay, the stay 40 is locked and held at a fixed position. In other words, the insert body and the stay are movable relatively and in stages.

(Effects) As described above, the present invention is a headrest insert in which a stay is movably mounted in a hollow insert body, and in which a stay locking portion for adjusting the stay in stages is provided in the hollow body of the insert. Therefore, even if this insert is installed in the headrest mold and a cushioning body made of polyurethane foam is integrally molded on its outer surface, there is almost no possibility that the polyurethane raw material will infiltrate the stay locking part, and it is not necessary to use conventional stays. This eliminates the occurrence of functional disorders related to mobility. In addition, since the stay locking device holding portion such as a clip is constituted by the upper end surface of the stay insertion tube of the lower half of the insert and the opposing lower end surface of the upper half, it Undercuts do not occur and the mold can be simplified. Furthermore, when attaching the clip, it is only necessary to install the device so that it is placed on the upper half of the stay insertion tube, and it is possible to provide a suitable headrest insert that can be easily assembled, etc. .

[Brief explanation of drawings]

Fig. 1 is a perspective view of each part constituting the headrest insert of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main part of the insert after assembly, and Fig. 3 is a view of A in Fig. 2.
-A sectional view, FIG. 4 is a BB-B sectional view in FIG. 2, and FIG. - E line sectional view, FIG. 6 is a sectional view taken along F--F line of a contact portion and an end view of the insertion tube and the abutting state in yet another embodiment, and FIG. 7 is a C-C line line in FIG. 2. 8 is a sectional view taken along the line D-D in FIG. 2, FIG. 9 is a sectional view of a headrest incorporating the insert of the present invention, and FIG. 10A is a sectional view of a conventional headrest insert. Front view of the main part, ro is G-G of a
A line sectional view and a perspective view of the clip. Explanation of symbols, 10... Insert body, 20...
...Insert lower half body, 22...Stay insertion tube, 2
5... Holding part of stay locking tool, 30... Upper half of insert, 32... Opposing part, 40... Stay, 5
0...Stay locking tool.

Claims (1)

[Claims] 1. In a headrest insert in which a stay is movably mounted in a hollow insert body, the insert body is formed from a half body having a stay insertion tube inside and a half body having a contact portion that abuts the upper end surface of the insertion tube. 1. A headrest insert comprising: a retaining portion for a stay locking tool formed at a contact portion between the upper end surface of the insertion tube and the opposing portion.