JPH0333447Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a mold that is integrally formed with a frame to form a seat pad used for vehicle seats, etc., and particularly relates to a mold that is formed integrally with a frame to form a seat pad used for vehicle seats. This invention relates to a seat pad molding insert that is placed in a mold prior to molding a seat pad so as to form a gap in the sheet pad to be inserted.

BACKGROUND ART As is well known, cushion pads made of soft urethane foam are often used in vehicle seats.

By the way, recently, in order to improve productivity and the quality of the sheet finish, sheet cushion pads have been developed by using the sheet pad raw material with the support frame placed in the mold, rather than incorporating a supporting frame into the sheet pad after foaming. The use of frame-integrated foam molded pads, which are injected into a mold and integrated with a support frame to form a seat pad, is on the rise.

In order to attach an external fixture such as a headrest to such a foam-molded seat pad, it is necessary to form a gap or a support hole in advance into which the headrest support is inserted. Inserts made of resin, rubber, etc. are placed at predetermined locations in the mold, and the seat pad is foam-molded to form support holes into which the head rest supports are inserted. The headrest is attached by inserting a rest support and passing this headrest support through a through hole in a frame integrated with the seat pad.

Problems to be solved by the invention However, in the conventional method of forming support holes, the insert for molding the seat pad is simply penetrated into the through hole of the frame during the molding of the seat pad. In addition, when the frame is transported with the insert inserted through the through hole, the insert may shift from its normal position due to vibrations from the conveyor or shock, resulting in the gap being formed in a defective position. Also, due to this misalignment, raw materials such as urethane can enter between the through-hole of the frame and the insert during molding, making it difficult to insert the headrest support after foaming and making it difficult to adjust and move the headrest. There are problems such as

On the other hand, a method has also been considered in which the insert is made of a magnet and the insert is fixed to a frame made of iron or the like by magnetic attraction.

However, with this method of using magnets, the magnetic force of the insert decreases after long-term use, resulting in insufficient fixing force, or if damage occurs due to carelessness during handling, etc. However, as mentioned above, problems such as misalignment of the insert and intrusion of raw materials occur.
Furthermore, when the insert is replaced due to such damage, there is also the problem that maintenance costs increase because inserts made of magnets are relatively expensive.

The basic purpose of this invention is to solve the above problems, and to provide a seat pad molding insert that has a simple structure and can accurately fix and hold the seat pad molding insert in a predetermined position. be.

Means for Solving the Problems That is, the seat pad molding insert of this invention is a seat pad molding insert that is disposed through a through hole of the frame to which an external fixture is attached when integrating with the frame to form the seat pad. The insert is characterized in that a removable fixing means is provided that presses and contacts the inner peripheral surface of the through hole from the inside.

Effect: According to this invention, the insert for sheet pad molding is fixed to the through hole by the fixing means that contacts the inner circumferential surface of the insert from the inside, so that the insert is placed in the normal position in the penetrating state, and Misalignment due to vibration during transportation is prevented, and the correct position is always maintained. In addition, after the seat pad is formed, the insert can be released from the through hole and easily removed from the frame through hole, creating a good gap in the seat pad and allowing the mounting part of the external fixture to be inserted easily. can.

Embodiment Next, an embodiment of this invention will be described based on the attached drawings.

The seat pad molding insert 1 is formed to match the shape of the headrest support, and on the side surface of the upper end thereof, four curved pieces 2 curved outward are arranged at equal intervals to form a spring with a closed cylinder shape. A member 3 is fitted, and this spring member 3 constitutes a detachable fixing means.

A bolt insertion hole is formed on the upper surface of the spring material 3, and a groove 1a is formed with a thread at the upper end of the insert 1 in accordance with the position of the bolt insertion hole. The bolt 5 of the upper block 4 is inserted into the hole and screwed into the groove 1a to fix the upper block 4. Thereby, the spring material 3 is also firmly fixed to the insert.

A headrest support bracket 7 is attached to the support frame 6, and a support through hole 8 is formed in the bracket 7 to which a headrest support (not shown) is attached.

Next, a process of molding a seat pad using the above-mentioned sheet pad molding insert 1 will be explained.

A support frame 6 is placed at a predetermined location in a mold (not shown), and a headrest support bracket 7 is attached to the support frame 6.
Insert 1 for sheet pad molding into support through hole 8 of
penetrate. Due to this penetration, the curved piece 2 on the side surface of the spring material 3 fitted into the seat pad molding insert 1 comes into contact with the support through hole 8 of the bracket 7 and is pressed inward to become flat. At this time, an elastic force acts on the curved piece 2, which has become flat, to return to the curved state. Moreover, since the curved pieces 4 are arranged at equal intervals, their elastic force is evenly transmitted to the inner peripheral surface of the support through hole 8, and the insert 1 is firmly fixed by the spring material 3 and the through hole 8 of the frame 6. be done.

It is possible to inject the sheet pad material into the mold in this state, or the material may be injected by transporting the entire mold to a predetermined location.

At this time, since the sheet pad molding insert 1 is firmly fixed to the support through hole 8 of the bracket 7 by the fixing means, the correct position is maintained without any displacement during transportation.

When removing the insert 1 after the foam molding of the seat pad is completed, the insert can be easily removed from the support through hole 8 by applying a slight force and pulling out the insert, and the supporting void, that is, the support hole 9 is removed from the seat pad 10. accurately and well formed. When pulling out this insert 1, remove the upper block 4.
The extraction work can be easily performed by grasping the .

The headrest support is inserted into the support hole 9 thus formed and passed through the support through hole 8 of the bracket 7 to attach the headrest to the seat.

In addition, in this embodiment, the support through hole provided in the bracket attached to the frame was explained as a through hole in the frame, but the through hole is limited to those formed in the bracket attached to the frame in this way. It may be formed directly on the frame.

In addition, in this embodiment, the headrest support hole has been described as a gap to be formed in the seat pad, but the hole is not limited to this, and can be used for various types of lumbar supports, etc., which are attached to the vehicle seat by inserting the attachment part from the outside. It can be applied to the mounting fixtures.

Further, in the above embodiment, a spring member in the form of a closed cylinder is used as the means for fixing the insert, but the present invention is not limited to this, and various configurations can be applied.

In short, any material that can securely fix the insert to the support through hole and is removable is sufficient.

Effects of the invention As explained above, according to this invention, the insert for sheet pad molding is provided with a removable fixing means that presses and contacts the inner peripheral surface of the through hole from the inside, so that the insert is securely attached to the through hole. The insert can be easily removed from the through hole by pulling it out, and a good gap can be formed in the seat pad. This has the effect of making it better.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, Fig. 3 is a front view showing the state before the frame is penetrated into the through hole, and Fig. Figure 4 is a perspective view of the frame with the insert passed through the through hole, Figure 5 is an enlarged view of Figure 4, and Figure 6 is a partially omitted view of the seat pad with a gap formed by the insert. be. 1... Sheet pad molding insert, 3... Spring material, 6... Support frame, 7... Bracket,
8...Support through hole, 9...Support hole, 10
...Sheet padded.

Claims (1)

[Claims for Utility Model Registration] In a seat pad molding insert that is disposed to penetrate through a through hole in a frame to which an external fixture is attached when integrating with a frame to form a seat pad, the inner circumferential surface of the through hole 1. An insert for molding a seat pad, characterized in that a fixing means is provided which is pressed from the inside and engaged in a detachable manner.