JP2010088775A - Net seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a net seat which facilitates net installing work to a seat frame, while making the net hard to come off. <P>SOLUTION: The device includes a net installation structure 16 including an engagement member 22 provided on a circumferential edge of the net 20, and a groove part 32 on a seat frame 30, in such a way that the engagement member 22 is insertable to the groove part 32 to install the net 20 to the seat frame 30 with tension. In the net installation structure 16, the engagement member 22 is turned using an opening edge part 36 of the groove part 32 to be inserted into the groove part 32. As the net 20 is installed, rotating force acts on the engagement member 22 to rotate in the groove part 32 due to the tension T of the net 20. However, the groove part 32 is shaped to interfere with the rotation trajectory of the engagement member 22 by the rotating force, thereby rotation of the engagement member 22 by the rotation force is not permitted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a net seat that elastically supports a load of a seated person by a net stretched on a seat frame.

  As such a net sheet, for example, there is a net sheet disclosed in Patent Document 1 below. In this net sheet, a hook having a substantially J-shaped cross-section sewn on the end of the net is hooked on a wire provided on the seat frame, and the net is attached to the seat frame. In such a net sheet, when the net is attached, the net must be pulled against the tension, and the hook must be hooked on the wire in a state where the net is once more tensioned than the attached state, which is not always easy.

  Although it is not a technology related to the net seat, the following Patent Document 2 aims to easily attach the skin member covering the cushion material to the back plate in the backrest of the chair that supports the load of the seated person with the cushion material. Have been disclosed. In this chair, an elastically deformable resin cord having an L-shaped cross section is fixed along the periphery of the skin, the periphery of the skin is wound around the back of the back plate, and the resin cord is elastically deformed into a V shape to When pushed into the groove, the resin cord is pressed against the wall of the groove by a restoring force to return to the original L shape in the groove and fixed. Thereby, an outer skin can be attached to a back board comparatively easily.

JP 2002-233437 A JP 2003-239922 A

  However, in the chair described in Patent Document 2, the entire surface of the resin cord enters the groove by entraining the skin, and the tension of the skin acts in the direction of pulling out the resin cord from the groove. Therefore, if applied to a net sheet in which a relatively large tension is applied to the net due to the load of the seated person, there is a concern that the resin cord may come out of the groove.

  Accordingly, an object of the present invention is to provide a net sheet that is easy to attach the net to the seat frame but is difficult to remove.

The present invention takes the following means in order to solve the above problems.
A first aspect of the present invention is a net seat that elastically supports a seated person's load by a net stretched on the seat frame, and includes an engaging member on a periphery of the net, and the seat frame has a groove portion. And a net mounting structure in which the engagement member is inserted into the groove portion and the net is attached to the seat frame in a tension state. The net attachment structure includes the engagement member and the groove portion. Can be inserted while rotating with the opening edge of the groove as a fulcrum, and when the net is attached, the engagement member is subjected to a rotational force to rotate within the groove due to the tension of the net. Although acting, the groove is shaped to interfere with the rotation orbit of the engagement member due to the rotational force, and the rotation of the engagement member due to the rotational force is not allowed. And features.

  According to the first invention, the engaging member provided at the periphery of the net is inserted into the groove while rotating with the opening edge of the seat frame as a fulcrum, so that the seat frame can be easily formed with a relatively small operating force. A net can be attached. The net mounting structure causes the tension of the net to act as a rotational force to rotate in the groove with respect to the engaging member, and the groove portion interferes with the rotation track of the engaging member due to the rotational force. The engaging member is not allowed to rotate. For this reason, the engagement member is unlikely to fall off the groove due to the tension of the net, and the net is difficult to come off the seat frame.

  A second invention is the net seat according to the first invention, wherein the net mounting structure can be inserted by an operator pushing the engaging member into a groove of the seat frame with a finger. It is characterized by that.

  According to the second invention, the engaging member can be pushed with a finger and inserted into the groove portion of the seat frame, so that the operator can attach the net to the seat frame without using a jig or the like.

  A third invention is the net sheet according to the first invention or the second invention, wherein the engagement member has a grip portion that can be gripped when the engagement member is pulled out from the groove portion. It is provided.

  According to the third aspect of the present invention, the engagement member is unlikely to fall off from the groove due to the tension of the net, but if the gripping part is picked, the engagement member can be easily pulled out from the groove, and the net is removed from the seat frame and disassembled. Is easy.

According to the net sheet of the first aspect of the invention, the net is difficult to be detached while the net is easily attached to the seat frame.
According to the net sheet of the second invention, the operator can attach the net to the seat frame without using a jig or the like.
According to the net sheet of the third invention, it is easy to disassemble.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The net seat 10 according to the present embodiment is a seat mounted on a vehicle such as an automobile, and includes a seat cushion 12 serving as a seating surface and a seat back 14 serving as a backrest, as shown in FIG. The seat cushion 12 elastically supports a seated person's load with a pad covered with an epidermis. The seat back 14 is configured by a net 20 on a backrest surface 14 a that supports a seated person. In the present embodiment, the present invention is applied to the seat back 14. Therefore, the configuration of the seat back 14 will be mainly described below. In each figure, F and U indicated by arrows indicate the front and top of the net sheet 10.

  As shown in FIG. 2, the seat back 14 includes a back frame 30 having a skeleton, and a net 20 such as a woven fabric or a knitted fabric formed in a mesh shape is stretched on the front side of the back frame 30. The net 20 constitutes a rounded surface 14a (see FIG. 1) that can elastically support the load of the seated person. As shown in FIG. 3, the net attachment structure 16 in which the net 20 is attached to the back frame 30 in a tension state includes an engagement member 22 provided on the periphery of the net 20 and a groove portion 32 provided on the back frame 30. It is established by the relationship.

  The net 20 is integrally provided with a resin engagement member 22 along the periphery. As shown in FIG. 3, the engaging member 22 is a long member, and an insertion portion 24 having a substantially semi-elliptical cross section perpendicular to the longitudinal direction, and a rectangular base portion 26 having a smaller width than the insertion portion 24. The insertion portion 24 and the base portion 26 are integrally formed so that one end of the circular arc shape of the insertion portion 24 and the base portion 26 are continuous. A base portion 26 of the engagement member 22 is sewn to the periphery of the net 20.

  As shown in FIG. 2, the back frame 30 has a long and narrow plate shape bent in a gate shape. As shown in FIG. 3, the front end portion of the back frame 30 is folded outward from the seat back 14 and opened rearward. A groove portion 32 is provided. The net 20 is disposed on the front side of the back frame 30, and the engaging member so that the opening end 34 is wound around the periphery of the net 20 with respect to the groove portion 32 that is open on the opposite side to the side on which the net 20 is disposed. It is attached to the back frame 30 by inserting 22. As shown in FIG. 3, the groove portion 32 has a shape that allows the insertion portion 24 of the engagement member 22 to be fitted, and the base portion 26 protrudes from the opening edge 36 with the insertion portion 24 fitted. Is formed. Therefore, in the state where the engagement member 22 is fitted in the groove 32 and the net 20 is attached, the engagement member 22 is opened by the tension T of the net 20 so that the virtual rotation trajectory is indicated by the arrow A in FIG. A rotational force acts to rotate with the opening edge 36, which is the inner edge of the end 34, as a fulcrum. In other words, the material of the engaging member 22 is not limited, but the base 26 remains open at the end 34 even if the tension T generated in the net 20 acts when the net 20 supports the load of the seated person H. And the rigidity is such that a rotational force to rotate about the opening edge 36 as a fulcrum can be generated without generating a backward acting force that pulls the engaging member 22 out of the groove 32. At least. The groove 32 has a shape that interferes with the rotation path A on which the engaging member 22 attempts to rotate with the opening edge 36 as a fulcrum, and the rotation of the engaging member 22 is not allowed. Accordingly, the engagement member 22 is prevented from dropping from the groove portion 32 due to the tension T of the net 20, and the state where the net 20 is stretched on the back frame 30 is maintained.

  As shown in FIG. 4, the net 20 is attached to the back frame 30 with the engaging member 22 inserted into the groove 32 so as to wind the open end 34 of the groove 32. The insertion portion 24 having a substantially semi-elliptical cross section of the engaging member 22 is formed such that the base end surface 24a of the base portion 26 which is not projected is substantially flat, and the width w of the insertion portion 24 is a groove portion pressed by an operator with a finger. It is preferable that it is set as the dimension which can be inserted in 32, for example, 10-25 mm, More preferably, it is 15-20 mm.

  As shown in FIG. 5, the groove portion 32 has a shape that allows the engaging member 22 to be inserted while rotating around the opening edge portion 36 that is the inner edge of the opening end portion 34 of the groove portion 32. But there is. Therefore, the engaging member 22 can be pushed into the groove portion 32 by sliding and sliding one side surface 22a on the side where the insertion portion 24 and the base portion 26 are continuously formed against the opening edge portion 36. That is, one side 22a of the engagement member 22 is applied to the opening edge 36 of the groove 32, and the insertion member 24 is moved to the groove while rotating the engagement member 22 against the tension of 20 with the opening edge 36 as a fulcrum. The insertion portion 24 is inserted into the opening 32 (P1), the engagement member 22 is further rotated with the opening edge 36 as a fulcrum, and the insertion portion 24 is placed along the side surface 38 facing the opening end 34 of the groove 32. When the angle between the groove 32 and the engagement member 22 coincides (P4), the engagement member 22 is further pushed into and fitted into the groove 32 without rotating. Thereby, the net 20 is attached to the back frame 30 in a tension state. Then, as shown in FIG. 3, when the engaging member 22 is fitted in the groove 32, a rotational force that tries to rotate inside the groove 32 acts on the engaging member 22 due to the tension T of the net 20. Since the rotation is not allowed by the groove 32, the engagement member 22 is prevented from falling off.

According to the net sheet 10 having the above configuration, the following operational effects can be obtained.
First, the net 20 is attached to the back frame 30 by an operation of inserting the engaging member 22 provided on the peripheral edge into the groove portion 32 provided in the back frame 30. At this time, in order to attach the net 20 in a tensioned state, the engaging member 22 is pushed against the tension of the net 20 against the groove 32 that opens rearward, but the opening edge 36 of the groove 32 is a fulcrum. Since the engaging member 22 can be pushed into the groove 32 while rotating, the net 20 can be attached with a relatively small operating force. In addition, since the engaging member 22 is large enough to be pushed by a finger, the operator arranges the net 20 on the front side of the back frame 30 from the front of the back frame 30 and directly uses it with one hand from the front. The net 20 can be easily attached by pushing the engaging member 22 into the groove 32 with a finger so that the periphery of the net 20 is wound around the groove 32.
Next, in a state where the net 20 is attached, the base 26 of the engaging member 22 protrudes from the opening edge 36 of the groove 32, so that the opening edge 36 is supported on the engaging member 22 by the tension of the net 20. However, the rotation trajectory A of the engaging member 22 and the groove portion 32 interfere with each other due to the rotation force, and cannot rotate. Therefore, even when a large tension T is generated in the net 20 due to the seating load, the engagement member 22 is difficult to be removed from the groove 32, and the attached state of the net 20 can be maintained.

The present invention is not limited to the above-described embodiment, and various other embodiments can be considered without departing from the gist of the present invention.
For example, by pulling the engagement member 22 in the opening direction (rearward) of the groove portion 32, the net 20 can be easily detached and disassembled by pulling out from the groove portion 32, but a gripping portion that can be gripped when being pulled out is provided. If it is provided in advance, the ease of disassembly can be further improved. For example, as shown in FIG. 6, a convex portion 50 that can be hooked on the end portion of the base portion 26 and pulled backward B may be formed as a grip portion (Modification 1). Further, for example, as shown in FIG. 7, the gripping portion can be formed as a knob 52 that protrudes backward B from the base end surface 24 a of the insertion portion 24 (Modification 2). It is preferable that the gripping portion is provided in at least one place that does not hinder the appearance of the net sheet 10. If the engaging member 22 is pulled out from the groove 32 at one location on the periphery of the net 20, the entire engaging member 22 can be pulled out from the pulled-out portion.

It is a perspective view of the net sheet concerning the embodiment of the present invention, and is the figure seen from the slanting front. It is a perspective view of the net sheet concerning the embodiment of the present invention, and is the figure seen from the slanting back. It is the III-III sectional view taken on the line of the net sheet shown by FIG. It is a figure which shows the attachment operation | work of the net | network of the net sheet | seat shown by FIG. It is a figure which shows the attachment process of the net | network of the net sheet | seat shown by FIG. It is a figure which shows the modification 1 of the engaging member which concerns on embodiment of this invention as a cross section corresponding to FIG. It is a figure which shows the modification 2 of the engaging member which concerns on embodiment of this invention as a cross section corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Net sheet 14 Seat back 16 Net attachment structure 20 Net 22 Engagement member 30 Back frame 32 Groove part 34 Open end part 36 Open edge part 50 Convex part (gripping part)
52 Picking (gripping part)

Claims (3)

A net seat that elastically supports a seated person's load by a net stretched on the seat frame,
The net is provided with an engaging member at the periphery of the net, and the seat frame is provided with a groove, and the net is attached to the seat frame in a tensioned state by inserting the engaging member into the groove. Has a structure,
The attachment structure of the net can be inserted while rotating the engagement member into the groove with the opening edge of the groove as a fulcrum, and when the net is attached, the engagement is caused by the tension of the net. The member is subjected to a rotational force to rotate within the groove, but the groove is shaped to interfere with the rotation track of the engagement member due to the rotational force. Net sheet characterized in that rotation is not allowed. The net sheet according to claim 1,
The net seating structure is characterized in that the net attachment structure can be inserted by an operator pressing the engaging member into a groove of the seat frame with a finger. The net sheet according to claim 1 or 2,
The net sheet according to claim 1, wherein the engagement member is provided with a grip portion that can be gripped when the engagement member is pulled out from the groove portion.

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