JPH0336467Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat back used for a straddle type seat, and particularly to a seat back for motorcycles and tricycles.

[Prior Art] In a seat conventionally used as a seat back for motorcycles, tricycles, etc., when trying to obtain local support force in the lumbar region, etc., the lumbar region is formed using a mechanical structure, or It was formed by laminating layers of cushion materials with different hardnesses.

[Problems to be solved by the invention] If a mechanical configuration is used to obtain local support force for the seat bag, there is a problem in terms of space for configuring the mechanism, and furthermore, the mechanical configuration requires a large number of parts. This not only causes an increase in the number of production steps and the number of manufacturing steps, but also poses problems in terms of economy.

Furthermore, when cushioning materials having different hardnesses are laminated, there is a problem in that misalignment occurs between the cushioning materials when the cushioning materials having different hardnesses are assembled. For this reason, it is possible to try to prevent misalignment by using adhesives, etc., but using adhesives does not solve the problem of misalignment when joining, and it is difficult to meet the demand for uniformity of products. It required skill. Furthermore, it has been difficult to obtain sufficient partial support force simply by laminating cushion materials having different hardnesses.

The purpose of the present invention is to provide a seat bag for motorcycles and tricycles that can obtain partial lumbar support without using a complicated mechanism and that prevents the cushion material from slipping during assembly. be.

[Means for Solving the Problems] The seat bag for motorcycles and tricycles of the present invention includes at least a frame, a lower cushion material placed on the frame, and an upper cushion material that is softer than the lower cushion material. In the seat bag for motorcycles and tricycles, the cushion material has a through hole formed in a waist contact portion of the upper layer cushion material, and the cushion material is fitted into the through hole. a lower cushion material in which a protrusion is formed, the protrusion is formed larger on the upper layer cushion material side than the flexible range of the upper layer cushion material, and the protrusion of the lower layer cushion material is inserted into the through hole of the upper layer cushion material. It is characterized by being fitted together.

[Function] As described above, the present invention includes a through hole formed in the waist contact portion of the upper layer cushion material, a lower layer cushion material in which a protrusion that fits into the through hole is formed,
the protrusion is formed larger toward the upper layer cushion material than the flexible range of the upper layer cushion material;
Since the protrusion of the lower cushion material is fitted into the through hole of the upper cushion material, an optimal cushion material such as a hard cushion material can be placed in the lower layer to directly support the waist. It is possible to partially increase the supporting force of the waist and other parts. In addition, since a through hole is formed in the upper layer cushion material and the protrusion of the lower layer cushion material is fitted into this through hole, the upper and lower fitting positions can be set in advance in the laminated cushion material, and misalignment during assembly can be set. can be prevented.

[Example] Hereinafter, an example of the present invention will be described based on the drawings. Note that the members, arrangement, etc. described below do not limit the present invention, and can be variously modified within the scope of the spirit of the present invention.

Fig. 1 shows an embodiment of the seat bag of the present invention, Fig. 1A is a partially cutaway perspective view showing the laminated state of the cushioning materials, and Fig. 1B is Fig. 1 showing the fitting process of the cushioning materials. FIG. 1C is a partial sectional view taken along the line B in FIG. 1A.

In the figure, reference numeral 1 indicates a seat bag, and the seat bag 1 is composed of a frame 2, a plurality of laminated cushion materials 3 placed on the frame 2, and a skin material (not shown) covering these laminated cushion materials 3. ing.

The cushion material 3 in this example includes a hard cushion material 4 previously formed as a frame as a lower layer cushion material, a cushion material 5 disposed within the frame of the cushion material 4, and these cushion materials 4, 5.
It is formed from a soft cushion material 6 as an upper layer cushion material that covers the.

The cushion material 4 is formed into a predetermined shape,
Convex portions 4a, 4a (only one side is shown) are formed on the left and right sides of the lower portion. In the cushion material 4 of this example, convex portions 5a, 5a, . . . are formed at four locations.

In the cushion material 6 of this example, holes 6a and 6b are formed in which the convex portion 4a of the cushion material 4 and the convex portion 5a of the cushion material 5 are fitted. A cutout hole 6c serving as a through hole is formed at a location corresponding to the waist. As shown in FIG. 1C, a cushion material 5b having the same shape as the notch hole 6c is fitted into the notch hole 6c. Then, in the state shown in FIG. 1C, when pressed from above, the soft cushion material 6 becomes more flexible than the hard cushion material 5b and comes into direct contact with the hard cushion material 5b. This partially improves the support and support of the lumbar region. In this manner, by forming the hole 6c and arranging a hard cushion material or a soft cushion material in the hole 6c, it is possible to partially change the hardness without using an adhesive.

To form the cushion material 3 as described above,
First, cushion material 4 and cushion material 5 are placed on frame 2. The cushion material 4 and the cushion material 5 are formed so that the cushion material 5 fits within the frame of the cushion material 4. Next, the cushion material 6 is placed on the cushion materials 4 and 5. At this time, the convex portions 4a and 4 of the cushion materials 4 and 5
b and the holes 6a and 6b of the cushion material 6 are fitted together. By optimizing the hardness of the cushion material 5 in this manner, the supporting pressure of the entire seat can be adjusted. In addition, the cushion material 4,
By forming the convex portion 5 and the holes 6a, 6b in the cushion material 6, the cushion material can be positioned uniformly. These cushion materials are covered with a skin material (not shown). After being covered with the skin material, no slipping or the like occurs.

By configuring the structure so that the protrusions do not protrude from the through holes formed in the cushion material of the surface layer as in this example, it is possible to obtain a structure in which the protrusions do not appear on the surface in the finished appearance.

In addition, as shown in Fig. 2, a hard cushion material 2
By making the cushion material 5 protrude beyond the soft cushion material 26 of the surface layer, it is possible to partially strengthen the contact.

In the above embodiment, there are two layers of cushion material, but the number of layers of cushion material may be three or more layers.

[Effect of the invention] Since the seat bag according to the invention is configured as described above, it is possible to partially increase the supporting force of the lumbar region with an extremely simple configuration. Furthermore, the overall support pressure can be adjusted by using the hard cushion material in the lower layer. Furthermore, in the laminated cushion material, it is possible to prevent misalignment during assembly.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the seat bag according to the present invention, Fig. 1A is a partially cutaway perspective view showing the laminated state of the cushion, and Fig. 1B shows the fitting process of the cushion materials. FIG. 1C is a partial sectional view taken along the - line in FIG. 1A, and FIG. 2 is a sectional view illustrating a fitted state of other cushion materials. DESCRIPTION OF SYMBOLS 1... Sheet (seat bag), 2... Frame, 3... Multilayer cushion material, 4, 5... Lower layer cushion material, 6... Upper layer cushion material, 4a, 5
a, 5b...Convex portion, 6a, 6b, 6c...Through hole.

Claims (1)

[Scope of utility model registration request] An automatic cushioning machine comprising at least a frame, and a multi-layer cushion material having different hardness, which is composed of a lower layer cushion material placed on the frame and an upper layer cushion material that is softer than the lower layer cushion material.
In the seat bag for a tricycle, the cushion material has a through hole formed in the waist contact portion of the upper layer cushion material, and a lower layer cushion material in which a protrusion is formed to fit into the through hole, and the protrusion is formed in the lower cushion material. A seat bag for a motorcycle or tricycle, characterized in that the seat bag is formed larger on the side of the upper layer cushion material than the flexible range of the upper layer cushion material, and a protrusion of the lower layer cushion material is fitted into a through hole of the upper layer cushion material.