JP2570703Y2 - Chair cushion mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a cushion body of a chair, and more particularly, a cushion body can be easily mounted on a seat plate or a backrest plate of a chair having a cushion body only by fitting work. The present invention relates to a simple cushion body mounting structure.

[0002]

2. Description of the Related Art A conventional chair cushion mounting structure is as follows.
Various structures are provided. For example, as disclosed in Japanese Utility Model Application Laid-Open No. 4-38739, which is a prior application of the present applicant, a connecting member is fitted to a peripheral portion of an inner surface of an outer shell and a wire buried in an inner peripheral portion of a cushion body. An opening is formed at a position corresponding to the connecting tool to be exposed on the back side, and the cushion body is pressed against the inner surface side of the outer shell from a normal direction thereof, thereby forming the dividing groove formed at the tip of the connecting tool. There is provided a structure in which the cushion body is attached to the outer shell by externally fitting to a line in the opening.

However, when the filaments are embedded in the cushion body, costly insert molding such as foam molding of the cushion body in a state where the filaments are attached to the mold in advance is required, and the mounting strength is low. Regardless of the direction in which the external force acts on the cushion body, the filament is slightly displaced inside the cushion body, so that the cushion body may be displaced with respect to the outer shell. Further, when a peeling force acts on the cushion body, the fitting between the split groove of the connecting member and the wire may be released in addition to the above-described displacement.

In the above-described cushion body mounting structure, in order to suppress the displacement of the cushion body with respect to the outer shell, a hook which comes into contact with a wire is separately provided in Japanese Utility Model Application Laid-Open No. 4-110555. It has been proposed to project from the inner surface of the outer shell.

[0005]

[Problems to be solved by the invention] In view of the above situation, the invention is to solve the problem in the outer shell,
By fitting the inner shell with the cushion attached, it can be easily attached to the outer shell, has high mounting strength, and can be easily attached to the inner shell. The point is to provide.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a projection having a tip whose diameter is enlarged is formed on one of the back surface of an inner shell having a cushion body attached to its surface and the inner surface of an outer shell. A cushion member for a chair, wherein a concave groove for slidingly engaging the projection is formed on the other side, and a movement restricting means for preventing and engaging the projection when the projection is fitted to the concave groove is provided between the inner shell and the outer shell. The mounting structure was configured.

[0007]

The chair cushion mounting structure according to the present invention having the above-mentioned contents includes an inner shell having a cushion attached to the surface thereof, a projection having an enlarged diameter at an inner end of the outer shell, and a projection formed by sliding the projection. The inner shell is attached by sliding engagement with an engagement structure consisting of mating concave grooves, and the inner shell is prevented from coming off from the outer shell by the movement restricting means. Here, the displacement of the inner shell with respect to the outer shell is restricted by the movement restricting means in the sliding engagement direction, and the protrusion in the other directions is restricted by fitting with the concave groove. Further, as a method of attaching the cushion body to the inner shell, a conventionally known method can be adopted. For example, with the cushion body arranged on the surface of the inner shell, the cushion body is attached with cloth or leather. This can be easily performed by covering with a ground, wrapping the edge of the upholstery on the back surface of the inner shell, and bonding or pinning the periphery.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; 1 to 4 show a typical embodiment of a cushion body mounting structure for a chair according to the present invention. In the drawings, reference numeral 1 denotes a cushion body, 2 denotes an inner shell, and 3 denotes an outer shell.

According to the present invention, a projection 6 having an enlarged diameter at one end is formed on one of a rear surface 4 of an inner shell 2 having a cushion body 1 attached to a surface thereof and an inner surface 5 of an outer shell 3, and the projection 6 is slid on the other. The gist of the present invention is that a concave groove 7 to be engaged is formed, and a movement restricting means 8 is provided between the inner shell 2 and the outer shell 3 so that the protrusion 6 is engaged with the concave groove 7 to prevent the groove 6 from coming off. .

More specifically, the cushion body 1 is arranged along the surface 9 of the inner shell 2, and the surface of the cushion body 1 is covered with a cloth 1 such as cloth or leather.
0, and the edge of the upholstery 10 is wound around the back surface 4 of the inner shell 2 and attached to the peripheral edge thereof by bonding or pinning, and attached to the surface 9 of the inner shell 2.
The cushion body 1 may be adhered to the surface 9 of the inner shell 2.

In the present embodiment, the inner shell 2 is a plate-like body made of synthetic resin whose surface 9 is curved so as to be slightly depressed. Bullets 11, 11 as regulating means 8
The projecting is inclined. The inclination direction of the bullet 11 is set to be opposite to the sliding engagement direction of the inner shell 2 with the outer shell 3.

The outer shell 3 is a plate-like body made of a synthetic resin having an inner surface 5 curved and concaved.
, Except for one side that slide-engages, a rib 12 is formed on the periphery so as to protrude inward. On the inner surface 5, projections 6, slidably engaged with the concave grooves 7,. In a state in which the elastic pieces 11 are fitted, concave portions 13 are formed as movement restricting means 8 for retaining and engaging the elastic pieces 11.

One of the protrusions 6 and the concave grooves 7 is formed on the back surface 4 of the inner shell 2 or the inner surface 5 of the outer shell 3, and the other is formed on the inner surface 5 of the outer shell 3 or the back surface 4 of the inner shell 2. . In addition, the shape of the projection 6 of the present embodiment is the shape of the neck 14
And a cylindrical head 15 is integrally formed at the tip thereof, and the shape of the concave groove 7 is such that the neck portion 14 can be inserted into a projecting edge of a ridge 16 projecting from the back surface 4 of the inner shell 2. A slit 17 is formed, and an enlarged diameter portion 18 into which the head 15 can be inserted is formed therein. At one end of the ridge 16, the groove 7 is closed as a movement restricting means 8 to form an abutment portion 19. However, other shapes can be appropriately adopted as long as the protrusions 6 slide into the concave grooves 7.

In order to attach the inner shell 2 having the cushion body 1 attached to the outer surface thereof to the outer shell 3, a plurality of projections 6 projecting from the inner surface 5 of the outer shell 3 are attached to the inner shell 2. When the recesses 7,... Formed in the back surface 4 are slid and engaged with the abutment portions 19 to the ends of the projections 6, the resilient pieces 11 are engaged with the recesses 13 in the recesses 13. In this state, the slide engagement advanced end of the inner shell 2 is connected to the rib 12 of the outer shell 3.
It is preferable that the movement of the inner shell 2 with respect to the outer shell 3 is prevented by the abutting portion 19.
Can be double regulated with
Peeling of the 0 edge can be prevented.

As another embodiment of the movement restricting means 8 shown in FIGS. 5 and 6, a rib 12 is protruded inwardly around the entire outer periphery of the outer shell 3. The protrusion 6 and the concave groove 7 are formed so as to be inclined so that the rib 12 does not interfere with the slide engagement, and the slide-engaged rearward end of the inner shell 2 rides over the rib 12 in the final stage of the slide engagement. It is set to stop at Here, the ribs 12 are dimensioned so as to be slightly elastically deformable and slightly project from the back surface 4 of the inner shell 2 with the inner shell 2 attached to the outer shell 3. . Therefore, the rib 12 and the slide-engaged rearward end of the inner shell 2 constitute the movement restricting means 8. If the projection 6 and the concave groove 7 are inclined, the height of the projection 6 with respect to the projecting surface becomes high, so that it is structurally impossible to provide the projection 6 over the entire surface. Therefore, in order to prevent the inner shell 2 from partially floating from the outer shell 3, it is preferable to project the stopper 20 on the inner surface 5 of the outer shell 3 corresponding to this portion.

[0016]

[Effect of the Invention] The cushion body mounting structure of the chair according to the present invention formed as described above forms a projection whose tip is enlarged in diameter on one of the back surface of the inner shell and the inner surface of the outer shell with the cushion body attached to the surface. On the other hand, a concave groove for slidingly engaging the projection is formed, and a movement restricting means for retaining and engaging the projection with the projection fitted in the concave groove is provided between the inner shell and the outer shell. The inner shell with the body attached inside the outer shell,
It can be easily mounted simply by sliding engagement with an engagement structure consisting of a projection having an enlarged-diameter tip and a concave groove for slidingly engaging the projection. The shell can be retained. That is, the displacement of the inner shell with respect to the outer shell is regulated by the movement restricting means in the slide engagement direction, and the protrusion is regulated in the other direction by fitting with the concave groove, so that the inner shell is firmly mounted without any backlash. It is possible.

[Brief description of the drawings]

FIG. 1 is a simplified exploded perspective view showing a cushion body mounting structure of a chair according to the present invention.

FIG. 2 is an exploded cross-sectional view of the same.

FIG. 3 is a cross-sectional view showing an assembled state.

FIG. 4 is a longitudinal sectional view showing the assembled state.

FIG. 5 is an exploded vertical sectional view showing another embodiment.

FIG. 6 is a longitudinal sectional view showing an assembled state of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cushion body 2 Inner shell 3 Outer shell 4 Back surface 5 Inner surface 6 Projection 7 Depression groove 8 Movement control means 9 Surface 10 Upholstery 11 Bullet (movement control means) 12 Rib 13 Recess (movement control means) 14 Neck (projection) 15 Head (projection) 16 Ridge 17 Slit (concave groove) 18 Enlarged diameter part (concave groove) 19 Stopper 20 Stopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A back surface of an inner shell having a cushion body attached to a surface thereof, and a protrusion having an enlarged diameter at one end of an inner surface of an outer shell, and a groove for slidingly engaging the protrusion is formed on the other. A cushion mounting structure for a chair, characterized in that a movement restricting means for retaining and engaging the projection with the projection fitted in the groove is provided between the inner shell and the outer shell.