JPH0141324Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a donut-shaped head rest with a net that is attached to seats of vehicles, furniture, etc.

Prior Art Some existing headrests A have a headrest main body shaped like a donut with an opening in the center to ensure rearward visibility and good ventilation.
In addition, some devices have a structure in which a net B is stretched over the central opening in order to further enable stable support of the head.

Conventionally, when installing the net B, a groove a is provided on the inner peripheral surface of the central opening, and a substantially quadrilateral frame b on which the net B is stretched is fitted into the groove a. (see Figures 6a and 6b), or the net is formed into a bag shape and attached so as to completely enclose the headrest main body.

Problems to be Solved by the Invention However, in the former case, the frame b, which is larger than the inner periphery of the central opening, must be fitted into the groove a, and furthermore, the frame b must be stretched and fixed along the groove a. If it is not fitted tightly, there is a risk that it will easily come off, so the installation process is extremely time-consuming. In addition, in the latter case, since the entire net B is exposed on the outer surface, the bag-like sewn portion of the net is visible from the outside, and even though the entire net is covered with the net, it cannot be said that it is preferable in terms of appearance. I can't.

Means for Solving the Problems In the donut-shaped headrest with a net according to the present invention, the end of the net is inserted between the inner peripheral edges of the outer skin covering the cushion foam and the three parts are joined together. The net is configured to be stretched within the central opening.

Function In this donut-shaped head rest with a net, the net is stretched only in the central opening, and the end of the net is inserted between the inner peripheral edges of the skin material and joined together, so that the end of the net is exposed. It becomes possible to form a headrest that looks good without having to do it with a simple operation.

Embodiments The following description will be given below with reference to FIGS. 1 to 5.

This headrest 1 is donut-shaped and consists of a central opening 2 and a pillow part. A net 4 is stretched over the central opening 2 to support the head in a stable manner. The pillow part 3 is a cushioning part for making contact with the head comfortable and mitigating impact, and is formed from an outer skin 30, a cushion material 31, and a frame 32. The skin 30 has a hollow bag shape, and is integrated with the skin by filling the inside thereof with a cushion material 31 made of polyurethane foam and embedding a frame 32 therein. The terminal 4a of the net 4 is inserted between the inner periphery of the skin 30 and a front side (upper side in FIG. 1) edge 30a and a back side (lower side in FIG. 1) edge 30b, which are part of the skin. , and these three parts are integrated by joining them by high frequency welding or the like. The net 4 may be made of a material having high frequency welding properties such as polyvinyl chloride, or may have a net 41 stretched around its peripheral edge 40 having high frequency welding properties. The mesh 41 may be made of natural fibers, synthetic fibers, metal fibers, or wire, or may be a porous mesh made of plastic. A flange 4 is provided on the peripheral edge 40.
2 are formed, and the inner peripheral edges 30a, 30b of the epidermis 30
This makes it possible to prevent the peripheral edge portion 40 from slipping out and securely fix the net 4 to the skin 30.

This headrest 1 can be easily molded by blow molding. First, the skin 30 is formed by blow molding. This skin 30 is formed with a hollow bag-like portion corresponding to the pillow portion 3 and a removed portion 30c at a portion corresponding to the central opening 2.
Further, the inner peripheral edges 30a and 30b of the skin 30 are made to protrude around the removed portion 30c, and a groove-shaped trim line 30d is formed between them. This trim line 3
The central opening 2 is formed by cutting the removed portion 30c along 0d with a cutter.
This opening 2 can also be formed by cutting off the removed portion 30c at the same time during blow molding. Next, the peripheral edge 40 of the net 4 is inserted into the slight gap created between the inner peripheral edges 30a and 30b, and the three are stacked, and with the peripheral edge 40 sandwiched,
These are sandwiched between high-frequency welding electrodes 50 and 51, and a high-frequency welding current is passed between the electrodes to heat and melt the three, and then solidify and join them together.
The epidermis 30 with the net 4 thus obtained
Now, by injecting the polyurethane foam raw material liquid into the hollow bag-shaped portion and forming the cushion material 31, the doughnut-shaped head rest 1 will be obtained.

Note that the net 4 can be attached to the blow-molded skin 30 while being stretched on the frame 32. The end of the net 4 can be attached to the frame 32 by wrapping it around the frame 32 and fixing the leading end thereof with a suitable fixing means 43 such as adhesive tape, adhesive or tacker. The frame 32 with the net 4 removed is inserted into the skin 30 through the opening on the inner peripheral surface of the skin 30, and in this state, the three parts are integrally molded in the same manner as described above.
Furthermore, if a raw material solution for polyurethane foam is injected into the hollow bag-shaped portion of the skin 30 to form a cushion material, the frame 32 and the ends of the net 4 can be attached by embedding them in the layer of the cushion material 31.

In the above-described embodiment, the skin 30 and the net 4 can be joined by any method, such as sewing, ultrasonic welding, bonding with a suitable adhesive, etc. In addition, the skin can be formed not only by blow molding but also by rotation molding, etc. Furthermore, it is possible to mold the divided bodies divided in the circumferential direction in advance, and when joining with the net, the two divided bodies are made to face each other and integrated by welding etc. It can be a two-stage process. In this case, molding methods such as injection molding, vacuum molding, and hot press can be applied.

Effects of the invention As described above, according to the donut-shaped headrest with a net according to the present invention, the end of the net is treated by covering the periphery of the net with a part of the skin, so that the edge of the net is not exposed. The installation work can be made easier because the net does not spoil its appearance and there is no need to separately terminate the peripheral edge of the net. Furthermore, since the molded skin and the net are bonded together, there is no fear of wrinkles, etc., and the pillow part can be formed all around the circumference without being constrained by the shape of the pillow part.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the headrest according to the present invention, Fig. 2 is a plan view of the headrest, Fig. 3 is a plan view of the net attached to the headrest, and Fig. 4 is a plan view of the headrest.
Figures a to c are explanatory diagrams showing the molding process of the same headrest, Figure 5 is a partially enlarged sectional view of a headrest according to another embodiment, and Figures 6a and b are donut-shaped headrests with a net according to the conventional example. FIG. DESCRIPTION OF SYMBOLS 1...Headrest main body, 2...Central opening, 30...Skin material, 31...Cushion form, 4...Net, 40...Net terminal.

Claims (1)

[Scope of utility model registration request] A donut-shaped head rest with a net, characterized in that the net is stretched within a central opening by inserting the end of the net between the inner peripheral edges of a skin material enclosing a cushion foam and joining the three together.