JPS62157844A - Head rest insert - Google Patents

Abstract

PURPOSE:To permit a stay to move smoothly, by constructing a hollow insert main body, which is provided with a stay movably, from respective upper and lower half bodies and forming holding portions of stay locking members at prescribed confronting portions of both the half bodies. CONSTITUTION:A head rest insert is divided into upper and lower portions and comprises an insert main body 10 having respective upper and lower half bodies 20, 30, a head rest stay 40 and a stay locking member 50. The lower half body 20 has an upwardly opening substantially box-shaped outer shell 21 having a pair of stay insert pipes 22 in it as its integral portion, the upper end 24 of the insert pipe being provided with a half portion 25c of a holding portion 25 of the stay locking member 50 such as a clip and the like, and the half portion 25c being formed as a concave portion wherein an elastic leg of the clip 50 can be widened. On the other hand, the upper half body 30 has a downwardly opening box-shaped outer shell 31 provided with contact portions 32 each having an end to be abutted against the inserting pipe 24 as its integral portion and the holding portion 25 is formed between the contact portion 32 and the upper end of 24 of the insert pipe.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an insert for an automobile headrest,
In particular, the present invention relates to a headrest insert in which a headrest stay is movably attached.

(Prior Art) In recent years, automobile headrests whose height can be adjusted according to the sitting height of an occupant have been frequently used. Various types of functions are used to adjust the height, but as shown in FIG. After the section 12a is provided at the lower part of the insert and the stay 13a is inserted into the cylindrical section 12a, the through hole 11 is inserted.
The stay 13a can be moved in stages relative to the insert 10a by inserting a clip 14a into the insert 10a and engaging the clip 14a with a notch 15a provided in the stay 13a.

(Problems to be Solved by the Invention) However, in many cases, these inserts are integrally molded with a cushioning material such as polyurethane foam on the outer surface within the headrest mold, and as described above, the through holes for inserting the clips 14a, etc. 11a on the outer surface, the liquid polyurethane raw material often enters the hole,
There is a tendency that the function of the clip and furthermore the sliding movement of the stay may be impaired. 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 install the stay, and the lower body 17a
It is necessary to provide an insertion hole that opens upward and downward, such as the cylindrical part 12a for supporting the stay, and as mentioned above, it is also necessary to provide a through hole 11a for clip insertion that is perpendicular to the insertion hole in the cylindrical part. This method requires a slide mechanism perpendicular to the mold opening direction in a mold used for injection molding or the like, which has the disadvantage that the mold becomes 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 main body, a half body having a stay insertion tube inside, and the insertion tube. The insert main body is constituted by a half body having an abutting part that abuts on the upper end surface, and a holding part for the stay locking tool is formed at the abutting part between the end face of the insertion tube and the abutting part. It's in the headrest insert.

(Function) The headrest insert of the present invention is provided with a retaining portion of the stay locking tool at the abutting portion of the upper end surface of the insertion tube provided inside the lower half body and the lower end surface of the opposing contact 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 stick insertion tube, which simplifies the structure of the mold. 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, urethane raw materials etc. will enter the holding part of the stay locking tool. There is almost no risk, and the locking function of the stay locking device will not be impaired.

(Example) Fig. 1 is a perspective view of an embodiment of the headrest insert of the present invention before assembly, Fig. 2 is a longitudinal sectional view of the center after assembly, and Figs. 3 and 4 are the opposing parts of Fig. 2, respectively. They are a cross-sectional view taken along the line A-A and a cross-sectional view taken along the line B-B of the insertion tube.

FIGS. 5(A) and 5(B) are end views of the contact portion and the insertion tube in the respective embodiments, and FIGS. 5(C) are (A) and (B).
E in a state where the abutment part and the insertion tube of b) are in contact with each other
- It is a sectional view taken on the E line.

FIGS. 6(a), 6(b), and 6(c) 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 is a sectional view taken along line CC (left) in Figure 2 of the insert after assembly, and Figure 8 is a cross-sectional view taken along line D-D.
It is a line (right side) sectional view. Moreover, FIG. 9 is a sectional view of the headrest insert of the present invention covered with a cushioning body and a skin material.

The headrest insert of the present invention has a lower half body 20 which is approximately divided into upper and lower halves. The insert body 10 includes an upper body 30, a headrest stay 40, and a stay locking tool 50.

The lower insert half 20 has a substantially box-shaped outer shell 2 that opens upward.
1, and integrally has a stay insertion tube 22 at a predetermined position inside. The stay insertion tube 22 has a stay insertion hole 23 extending vertically through the center thereof, and a stay locking tool 50 such as a clip, which will be described later, is held on the upper end surface 24 of the stay insertion tube 22 so as to surround the opening of the stay insertion hole 23. One half of part 25 25c
is formed. The holding portion 25c is a clip 50.
etc., and is formed so as to prevent the clip etc. from falling off and not to inhibit the degree of freedom of the elastic legs. In the embodiment shown in FIG. 1, the holding portion 25c is A recess 2 is formed in 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.
5c.

As shown in FIGS. 5(a), (b), and (c), this holding part 25 has a plurality of protrusions 26 on the upper end surface 24a of the stay insertion tube 22a for locking the stay locking device 50a such as a clip. By providing a wall 35 surrounding the clip etc. around the lower end surface 34a of the other contact portion 32a, both end surfaces 24a
A holding portion 25a of the stay locking tool may be formed between the s 343, and a wall 27 facing the upper end surface 24b of the stay insertion cylinder may be formed as shown in FIGS. By providing a side wall 38 in a direction perpendicular to the wall 27 on the end face 34b of the other contacting part 32b, a retaining part 25b for the stay locking member may be formed between both end faces. 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 is the clip 50b.
shows.

The insert upper half 30 is a box-shaped outer shell 21 of the lower half 20.
It consists of a box-shaped outer shell 31 that opens downward and is closed with a crown, and a contact portion 32 having an end surface that comes into contact with the upper end surface 24 of the stay insertion tube 22 of the lower half body 20 is integrally vertically disposed inside the shell 31. has been done. This contacting part 32 is opened 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.
The opening at the lower end is the stay insertion hole 2 of the lower half body 20.
3, and the remaining lower surface thereof is provided so as to form a holding part 25 opposite to the locking tool holding part half 25c.

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 device 50 such as a clip as described above.

Note that the length and height of the contact portion 32 and the insertion tube 22)
It is sufficient that they are formed so that they are in contact with each other, and either of them may be long or short.

In addition, the central cavity 33 of the opposing portion is provided with a stay 40 as shown in FIG.
It is preferable to form it as a guide groove.

In the figure, 29 and 39 are reinforcing ribs provided on the insert lower half body 20 and the upper half body 30, respectively, and the ribs 39 on the upper half body are
As shown in FIG. 7, the center portion is cut out to allow the stay 40 to be moved. 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 edges as shown in FIG. It is desirable to keep it. The upper and lower insert halves are made of plastic by injection molding.

The headrest stay 40 is made of a metal rod or a metal tube, and has a notch 42 on at least one side of its leg 41, and the stay insertion tube 22 of the insert lower half 20
It can be installed inside. 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.

The clip 50 is inserted from the U-shaped bend as shown in FIG.
The leg 51 extends substantially linearly, and the other leg 52 draws an arc separating from the one leg 51 in the middle, and is then substantially parallel to the one leg 51 at its end. . Note that the arc is formed by a stay 40 as shown in the figure.
The two legs 51 and 52 are formed so as to draw an arc approximately - with respect to the outer periphery thereof, and the distance between the two legs 51 and 52 is such that the stay 40 can be held therebetween.

2, the clip 50 is placed on the upper end surface 24 of the stay insertion tube 22 of the insert lower half body 20, and the clip 50 is placed between the legs of the clip 50 and the stay insertion hole 23. After the legs 41 of the stay are inserted, the upper half body 30 of the insert is closed and fixed so as to cover the lower half body. At this time, the clip 50 is clamped between the upper end 24 of the stay insertion tube 22 and the lower end surface 34 facing each other, as shown in the drawing. Therefore, the clip 50 is one of the straight lines 1! ! As the stay 40 moves up and down, the legs 51 of the clip can only be opened as shown by the dashed line in FIG. When this happens, the stay 40 is locked and held at a fixed position. In other words, the insert main body and the stay are movable relatively and in stages.

(Effects) As described above, the present invention provides a headrest insert in which a stay is movably mounted in a hollow insert body, and a headrest insert in which a stay locking portion for adjusting the stay in stages is provided in the hollow body of the insert. Even if this insert is installed in a mold for a headrest and a polyurethane foam foam is integrally molded on its outer surface, there is almost no risk that the polyurethane raw material will enter the stay locking part, and it is not possible to use the conventional stay retainer. This eliminates the occurrence of functional disorders related to mobility. In addition, since the stay locking device holding part 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 This eliminates undercuts and simplifies the molding die. 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, making it possible to provide a suitable headrest insert that can be easily assembled and the like.

[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 sectional view of the main part of the insert after assembly, Fig. 3 is a sectional view taken along the line Δ-A in Fig. 2, and Fig. 4 are cross-sectional views taken along the B-E line in Figure 2, Figures 5 (a), (b), (
C) is an end view of the opposing portion and the insertion tube in another embodiment, and a sectional view taken along the line E-E in the abutting state, and FIG. 6 is an end view of the opposing portion and the insertion tube in another embodiment, and F in contact state
7 is a sectional view taken along line C-C in FIG. 2, FIG. 8 is a sectional view taken along line D-D in FIG. 2, and FIG. 9 is a sectional view taken along line D-D in FIG. Figure 10 (A) is a front view of the main parts of a conventional headrest insert, Figure 10 (B) is a cross-sectional view taken along line G-G of (A), and Figure 10 (C) is a perspective view of the clip. be. Explanation of symbols 10 Insert body, 20 Insert lower half body 2
2 Stay insertion tube, 25 Holding part 3 of Stay locking tool
0 Insert upper half body, 32 Opposing part 40 Stay, 50 Stay locking device Patent applicant Inoue MCHIP Co., Ltd. Figure 1 q 614 Figure 2; rs 3 r'< m 4 , J5a Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] In a headrest insert in which a stay is movably mounted in a hollow insert main body, the insert main body is composed of 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. A headrest insert characterized in that a holding portion for a stay locking tool is formed at a contact portion between the upper end surface of the insertion tube and the opposing portion.