JP2003070592A - Net seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a side support part provided to improve stability for seating not by using a separate material but by modifying the configuration of a seat surface when the seat surface of a net body is used for a seat body. SOLUTION: A central part of a front surface 34 is pulled backward by a suspending structure that a suspending member 52 made of a flexible material is attached between a position Y on the front surface 34 of a seat surface body 22 and a catching piece 54 formed on a frame body 24 of a seat frame. Both side parts are configured to relatively protrude, and side supports 50 are formed on the both sides. A hook piece 60 is attached to the suspending member 52, and engages the catching piece 54 in a tightly pressed manner.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a net sheet. In particular, the present invention relates to a net seat suitable for use in vehicles such as automobiles.

[0002]

2. Description of the Related Art A seat used in a vehicle such as an automobile comprises a seat cushion and a seat back. The seat cushion is a seat portion located on a seat surface on which a person sits. The seat back is a seat portion located on the back of a person. In any of the seats, in order to improve the holding property in the width direction of a person seated on the seat, generally, both side positions are bulged forward from the center position in the width direction. That is, the side support portions of the seated person are provided at both positions in the width direction of the seat to provide a good seating stability.

On the other hand, recently, in order to reduce the weight of the seat, there has been considered a seat in which the seat surface contacted by a seated person is formed of a net body. A seat whose seat surface is formed of a net body is usually provided in a state where the seat surface of the net body is stretched, that is, in a stretched state, on a seat frame formed in a substantially outer shape of the seat. Therefore,
The seat surface is generally flat. For this reason, the formation of the side support portions for improving the holdability of the seated person described above is performed by additionally attaching pad members as separate members having a size to be the support portions to both sides of the generally flat seat surface. There is. As a result, the post-applied pad member portions on both sides bulge forward from the seat surface of the net body, functioning as side support portions and ensuring seating stability.

[0004]

However, in the above-described seat using the sheet surface of the net body, in order to form the side support portion, a pad member which is a member different from the sheet surface of the net body is attached. There is a problem that has to be.

Therefore, the present invention has been made in view of the above-mentioned problems, and the problem to be solved by the present invention is, even when the sheet surface of the net body is used,
The side support part is formed by changing the shape of the seat surface without using a separate member.

[0006]

In order to achieve the above-mentioned object, the present invention takes the following means. First, the means for a net sheet according to the first aspect of the present invention is a net in which a seat surface, at least a part of which is a net body, is attached to a seat frame that forms a side shape skeleton in the width direction of the seat. In the seat, the seat surface is fixed between the back surface of the seat surface which the seated person contacts and the vicinity of the width direction side surface of the seat surface, and the fixed portion as a seat constituent member located behind the seat surface. It is characterized in that a hanging member that pulls backward is attached in the direction of the region, and a side support portion for a seated person is formed on a side portion of the seat surface. According to the net sheet of the present invention, the net member is stretched in a substantially flat state on the seat frame by connecting the vicinity of the side surface in the width direction of the seat surface with the fixed portion as the seat constituent member by the hanging member. The central part of the surface is pulled backward and stretched. As a result, the shape of the seat surface in contact with the seated person in the width direction has a configuration in which both side positions relatively bulge forward from the central position, and the side support portions are formed. The seated person is held by the formed side support portion.

The net seat means according to a second invention of the present invention is the net seat means according to the first invention, wherein the hanging member is made of a flexible material and the fixing portion is a seat frame. In order to attach the hanging member to the fixed portion, a locking piece facing rearward is provided in the fixed portion, and a hook piece having a substantially U-shaped cross section is attached to the hanging member. It is characterized by being engaged with a stop piece. According to the net sheet of the present invention, the hanging member is attached to the fixed portion by engaging the hook piece with the locking piece. In this way, the engagement attachment by the hook piece can be performed relatively easily.

Further, the net seat means according to the third aspect of the present invention is the net sheet means according to the second aspect of the present invention, wherein the hook piece engages the locking piece in a pinching state and the hook piece is in the engaged state. It is characterized in that a rotation preventing portion for preventing rotation with respect to the locking piece is provided and engaged. According to the net sheet of the invention, first, the hook piece engages with the locking piece in a pinched state. Therefore, the hook piece is less likely to come off the locking piece due to the frictional force of the clamping pressure. Further, the hook piece is provided with a rotation blocking portion that blocks rotation of the hook piece in the engaged state. As a result, even if the hook piece is subject to an external force of rotation and may come off the locking piece,
Rotation is blocked by the rotation blocking portion, and it is reliably prevented from coming off.

Further, the net sheet means according to the fourth invention of the present invention is the net sheet means according to the second or third invention, wherein the hook piece has a tension for maintaining the tension of the suspension member made of a flexible material. The maintenance site is integrally provided. According to the net sheet of the invention, the hook piece is provided with the tension maintaining portion for maintaining the tension of the hanging member made of the flexible material. As a result, even when a person is seated on the seat and the seat surface of the net body moves to the rear position to some extent and the tension of the suspension member is relaxed, the tension of the suspension member maintains the tension of the suspension member. As a result, the state in which the tension state of the hanging member is always applied to the hook piece that engages with the locking piece is also maintained, so that the acting force that tends to disengage from the locking piece due to the loosening of the tension on the hook piece. Can be prevented from working.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a vehicle seat 10 to which a net seat according to the present invention is applied. The seat 10 has a seat cushion 12 that forms a seat surface 16 on which a person occupying an automobile sits, and a seat back 14 that forms a backrest surface 18. The seat back 14 is connected to the seat cushion 12 so as to be reclining. In this embodiment, the net sheet formed of the net body, which is the object of the present invention, is applied to the seat back 14. That is, the net body is adopted and configured on the backrest surface 18 of the seatback 14. Therefore, the configuration of the seat back 14 will be mainly described below. In addition, seat back 1
The side support portions 50, which are the features of the present invention, are formed on both sides of the backrest surface 18 of No. 4 to secure the seating stability of the seated person.

The seat back 14 is mainly composed of a seat frame 20 and a seat face member 22. The overall shape of the seat frame 20 is shown in FIG.
The overall shape of 2 is shown in FIG. First, the seat frame 20 will be described with reference to FIG. The seat frame 20 is a member that forms the skeleton of the seat back 14, and is formed in a substantially outer shape of the seat back 14. The seat frame 20 of this embodiment is formed by using a magnesium material from the viewpoint of weight reduction. In the frame body 24 of the seat frame 20, two vertical portions as viewed in FIG. 2 form side-face-shaped skeletons of both side surface portions of the seat back 14. The frame body 24 is formed wide in the front-rear direction of the seat back 14 from the central portion of the side surface portion thereof, and is formed in a shape that gradually bulges forward from the center toward the lower portion. Both lower ends of the frame body 24 are connected to each other on the rear side of the seat back 14 by a long connecting reinforcing portion 26. Further, a headrest skeleton 28 formed in a rectangular shape and protruding upward is formed above the frame body 24. The seat frame 20 is connected to the seat frame of the seat cushion 12 shown in FIG. 1 via a reclining mechanism (not shown). Reference numeral 54 indicates a locking piece which will be described in detail later. In this embodiment, magnesium is used as the material of the seat frame 20, but light metal such as aluminum, iron, or synthetic resin may be used.

Next, the seat face member 22 will be described with reference to FIG. The seat surface member 22 is formed in a tubular shape as a whole, and the upper end and the lower end are formed in an open state. In this embodiment, as described above, the net body is adopted in the upper portion 18a of the backrest surface 18 of the seat back 14, the rear surface portion 32, and the like. The base of the other portions is also a net body continuous with the above-mentioned portion, but another skin member is attached to the surface of the net body.
The net body is composed of a sheet-like net material formed by knitting or weaving fibers or long materials such as a mesh member and a woven cloth member. The net material is cut into a predetermined shape of the front surface portion 34, the side surface portions 36 and 38, and the rear surface portion 32, and adjacent portions of the respective surface portions are sewn to form a tubular shape. The front surface portion 34 serves as the backrest surface 18 of the seatback 14. This back support surface 1
A suspension member 52 to which a hook piece 60, which will be described in detail later, is attached is attached to the back surface of 8. The "seat surface" referred to in the present invention means the seat surface body 2 on the side where a seated person contacts.
In this embodiment, since it refers to two locations,
The "front surface portion 34" forming the backrest surface 18 corresponds to the "seat surface" in the present invention.

A fastener 40 and hooks 42, 42 are provided as a pair along the edges of the seat face member 22 at the upper and lower ends in the open state as a joining member for joining the front face portion 34 and the rear face portion 32. There is. The upper end of the sheet face piece 22 has a fastener 40 as a joining member only in the central portion.
Is provided. The fastener 40 is in an open state from both ends to the side, and has openings 44, 44 forming a pair. The openings 44, 44 are formed in such a size that the members forming the headrest skeleton 28 of the seat frame 20 can be inserted therethrough.

The skin member attached to the surface of the net body is
In this embodiment, it is provided on both sides of the side surface portions 36, 38 and the front surface portion 34 and the rear surface portion 32 at a position from the lower end to a height corresponding to the side of a seated person. Further, it is also provided over the entire lower portion of the front surface portion 34 that constitutes the backrest surface 18. The place where this skin member is provided is designated by reference numeral 36.
a, 38a, 34a, 32a. Each skin member 36a, 38a, 34a, 32a can be composed of a pad material and a skin material covering it. The pad material is an ultrathin thin plate, and is not a large lump-shaped structure that forms a conventional side support portion. The skin material is formed of various woven fabrics, non-woven fabrics, and sheet-shaped members such as leather. In addition, each skin member 36a, 38a, 34a, 32a
The attachment to the net body can be performed by various methods such as welding, adhesion, and sewing in addition to sticking.

When these skin members are provided at the portions that come into contact with the seated person, the skin member provides a feeling of contact different from that of the net body. For example, by providing a skin member having a skin material with high rigidity in a portion that comes into contact with a seated person, it is possible to obtain a firm feel while maintaining the flexible deformability of the net body. Further, by providing a skin member provided with a pad material in a portion that comes into contact with the seated person, the pad material provides a soft contact feeling while suppressing the deformation of the net body, and the contact between the abutting portion and the seating surface. The area can be increased. Also, the pad material makes it possible to avoid contact between the seated person and the seat frame,
Comfortable to sit.

The seat back 14 is assembled with the seat frame 20 and the bag-shaped seat face member 22 described above in the following manner. A bag-shaped sheet face member 2 having a net body
2 is passed from the upper end of the seat frame 20, that is, from the upper side of the headrest skeleton 28 downward to cover the entire seat frame 20. Sheet face piece 2 in a covered state
2 top fastener 40 and bottom hook 42.42
By stopping the sheet face body 22 having a net body
Is stretched and mounted. After that, the headrest main body 46 shown in FIG. 1 is attached to the headrest frame 28 of the seat frame 20 to form a headrest portion, and the assembly of the seatback 14 is completed.

Since the bag-like shape of the seat surface body 22 having the net body of this embodiment is formed smaller than the completed body shape in the free state shape, it is stretched in the state of being covered with the seat frame 20. Installed in the installed condition. The bag shape of the seat surface member 22 may be formed in the free state shape to have substantially the same shape as the shape of the finished product or with some space, and in this case, it may be a state in which it is stretched when the side support portion 50 described later is formed. Become. In this way, there is an advantage that the covering of the bag-shaped seat surface member 22 can be attached to the seat frame 20 relatively easily.

Next, the embodiment for forming the side support portion 50, which is a feature of the present invention, will be described with reference to FIGS.
It will be described based on. 4 is the seat back 1 shown in FIG.
The IV-IV sectional view taken on the line 4 is shown. FIG. 5 shows an enlarged view of the side support portion 50 on one side shown in FIG. As shown in FIG. 4, the seat back 14 has a front portion 34 on the right side as the seat back surface 18 of the seated person and a left side on the rear side portion 3 in FIG.
2. The upper and lower sides are the side surface portions 36 and 38. The front surface portion 34, which corresponds to the seat surface according to the present invention, has a structure in which both side portions (upper and lower portions in FIG. 4) incline forward relative to the central portion thereof. The both side portions formed so as to project in an inclined manner serve as side support portions 50. The backrest surface 18a at the central portion is formed of the net body A, and both side portions that become the side support portions 50 are formed by attaching the skin members 34a and 34a to the surface of the net body A. Note that in FIG. 5, the front refers to the right direction when viewed in the figure. In each of the constituent parts shown in FIG. 4 and FIG. 5, the constituent parts of the net body are indicated by the reference symbol A, the constituent parts of the pad material constituting the skin member are indicated by the reference sign B, and the constituent parts of the skin material are indicated. Is indicated by the symbol C.

Skin members 34a, 3a which become the net body A at the central portion of the front surface portion 34 and the side support portions 50 at both side portions.
The net body A to which 4a is attached has its adjacent portions joined by sewing to be integrated. Similarly, the side support portion 50 and the side surface portions 36 and 38 are connected to each other at an adjacent portion, and the side surface portions 36 and 38 and the rear surface portion 32 are also connected to each other at an adjacent portion by sewing. In this way, the sheet face piece 22 is configured as a bag. In addition, a part of both sides of the rear surface part 32 is formed on the surface of the net body A as described above.
a and 32a are adhered and configured. The central portion of the rear surface portion 32 is configured as a net body A.

The two frame bodies 24 forming the side portions of the seat frame 20 are formed into an elongated S-shape in cross section, and the seat face body 22 formed in a bag shape between the frame bodies 24, 24.
Are coated. In the covered state, the side surface portions 36 and 38 of the seat face body 22 are located outside the frame body 24. The side support part 50 is the front part 3 of the back support surface.
4 is formed by pulling the back surface of the position 4 near the side portion (Y position) rearward by the hanging member 52. The hook piece 60 is attached to the rear end of the hanging member 52, and
It is engaged with a locking piece 54 formed at the rear part of and is stopped. It is configured as a so-called "suspension structure" that is commonly called in the seat industry. Front part 3 of the seat face piece 22
When the seat frame 20 is covered by the frame body 24, the seat frame 4 has a substantially flat shape extending between the S-shaped front portions 24a. By pulling this rearward with a suspension structure using the suspension member 52, the central position portion of the front surface portion 34 becomes a position retracted rearward. As a result, both side portions where the frame body 24 is relatively positioned are inclined and protruded, and the side support portion 50 is formed.

The hanging member 52 is made of a flexible material such as cotton cloth. Net body A at the Y position on the front surface portion 34
When the central position portion of the front surface portion 34 and the side support portion 50 are sewn together, the hanging members 52 made of cotton cloth are also overlapped and sewn together and joined together. The connection with the hook piece 60 at the rear end is also performed by attaching the elastic piece 66 integrally formed with the hook piece 60 by sewing. The portion indicated by X in FIG. 1 is a portion having a so-called hanging structure. Therefore, the hanging member 52,
The hook piece 60 is formed with a constant width (FIG. 3).
reference).

Referring to FIG. 5, the details of the coupling relationship between the hook piece 60 attached to the rear end of the hanging member 52 and the locking piece 54 provided at the rear end of the frame 24 of the seat frame 20 will be described. To do. The locking piece 54 is integrally formed on the extension line of the S-shaped frame body 24 by folding back the rear side of the frame body 24 into a substantially U-shape and folding the tip end portion inward of the seat so as to project rearward. Is provided for the purpose. Therefore, a groove 56 having a constant width is formed in the inwardly folded portion of the sheet that serves as the locking piece 54. Since the seat frame 20 is made of a magnesium material, the locking piece 54 is also made of the same magnesium material and has a rigid body shape.

The hook piece 60 is made of polypropylene (P
P) and thermoplastics such as olefin (TPO). The hook piece 60 has a substantially U-shaped cross section, and both side pieces 62, 6 sandwiching the locking piece 54.
Have 4. The width of the side pieces 62, 64 in the free state is smaller than the width of the locking piece 54, and the hook piece 60 is fitted to the locking piece 54 in a pinched state. Therefore, since the frictional force is applied by the clamping pressure and the fitting is performed, even if an external force is applied to the hook piece 60 to disengage it from the locking piece 54, the hook piece 60 is prevented from being easily disengaged by the frictional force. Further, the tips of both side pieces 62, 64 which are openings of the U-shaped hook piece 60 are formed in guide shapes 62a, 64a which are opened and expanded outward. Since the guide shapes 62a and 64a are provided, when the hook piece 60 is fitted into the locking piece 54, the guide shapes 62a and 6a are provided.
Since it can be fitted by being guided by 4a, it can be easily engaged.

The hanging member 52 is a bag-like sheet face member 2.
Although it is inside 2, the hook piece 60 for a hanging structure
The engagement with the locking piece 54 is performed as follows. In the above-mentioned attachment of the bag-shaped seat surface member 22 to the seat frame 20 by covering, the fastener 40 side is pressed against the upper portion of the seat frame member 20 with the seat surface member 22 shown in FIG. The coating is performed so as to be on the outside, and in the middle of the state in which the coating is performed to a position just below the X position shown in FIG. To fit and engage. Since the attachment for forming the suspension structure is performed by feeling, the opening of the hook piece 60 having the guide shapes 62a and 64a facilitates the attachment work by the operator. Further, the side piece 64 of the hook piece 60 on the side to be inserted into the groove 56, with the tip end portion of the guide shape 64a thereof engaged with the locking piece 54, is an inward side surface of the rear portion of the frame body 24. It is in contact with 24b. As a result, even when an external force that causes the hook piece 60 to rotate with respect to the locking piece 54 is applied, the rotation is blocked, and the hook piece 60 is prevented from coming off the locking piece 54. In this sense, the guide shape 64a at the tip of the side piece 64 in this embodiment also functions as the "rotation preventing portion" in the present invention.

An elastic piece 6 formed integrally with the hook piece 60.
6 is integrally configured with the hook piece 60 by double-layer molding. The elastic piece 66 is also made of the same material as the hook piece 60, but the hook piece 60 is made to be easily elastically deformed.
It is made of a slightly softer material. The elastic piece 66 is disposed in contact with the hanging member 52, and the hanging member 52 is attached to the elastic piece 66 by sewing as described above, and as a result, is also connected to the hook piece 60. It is in. The elastic piece 66 is in the position shown by the two-dot chain line in FIG. 5 in the free state, but is in the solid line state in the suspended structure state,
It is in a state of being bent by the hanging member 52. As a result, the elastic force to restore the two-dot chain line state is always acting on the elastic piece 66, and the elastic force is applied to the hanging member 5.
It is assigned to 2. Therefore, even if the suspending member 52 is loosened for some reason, the elastic force of the elastic piece 66 to be restored is always maintained in the tension state.
As a result, the engagement between the hook piece 60 and the locking piece 54 can be securely maintained without being loosened. It is assumed that the hanging member is in a loosened state when a seated person contacts the front surface portion 34 as the back rest surface 18 and the front surface portion 34 is further retracted from the state shown in the drawing. It should be noted that in the present embodiment, the “repulsion piece 6
“6” corresponds to the “tension maintaining portion” in the present invention.

In this embodiment, as means for surely maintaining the engagement state between the hook piece 60 and the locking piece 54, the engaging means and side by pinching by both side pieces 62 and 64 of the hook piece 60. Three means are used: a rotation preventing means in which the tip guide shape 64a of the piece 64 is made to function as a rotation preventing portion, and an elastic force applying means for applying the elastic force to the suspension member 52 by the elastic piece 66. However, it is not always necessary to use all three means, and one or two means may be appropriately selected and adopted. In this embodiment, as described above, the back support surface 1 is used to form the side support portion 50.
Since the shape of the front surface portion 34 as 8 is formed by a so-called hanging structure by the hanging member 52, it can be formed relatively easily without using a large pad member as in the conventional case.

By using a so-called hanging structure, the front face portion 3 is used to form the bag-like shape of the seat face body 22.
4, it is also possible to absorb the variation in the sewing position when the adjacent portions of the rear surface portion 32 and the side surface portions 36 and 38 are joined by sewing. In other words, if there are many sewn areas in the bag shape,
Inevitably variations occur in the bag-like peripheral dimensions. However, even if there is some variation, when the side support portion 50 is formed by pulling the hanging member 52 rearward, the variation can be absorbed. Therefore, bag-shaped dimensional accuracy is not so required.

Although one embodiment of the present invention has been described above, various other embodiments of the present invention are conceivable. For example, in the above-described embodiment, the net seat in which the net body is applied to the back support surface 18 of the seat back 14 has been described, but the net seat may be applied in the seat surface 16 of the seat cushion 12. . Of course, both the seat cushion 12 and the seat back 14 may be net seats. Further, in the above-described embodiment, an example in which the net body is provided in a part of the front surface portion 34 as the seat surface has been described, but the entire front surface portion 34 as the seat surface may be configured as a net body. Further, the entire bag-shaped sheet face member 22 may be configured as a net member.

Further, in the above-described embodiment, an example in which the bag-shaped sheet surface member 22 is used to form the seat surface has been described, but a so-called front surface type net having only the front portion is attached to the seat frame 20. The present invention can be applied to a sheet. That is, the side support portion can be formed by pulling the position near the side portion of the seat surface configured only by the front surface portion rearward with the hanging member. In addition, in the above-described embodiment, the example in which the locking piece 54 that engages the hook piece 60 is provided in the frame body 24 of the seat frame 20 has been described.
May be a fixed part that constitutes the sheet constituent member.

[0030]

As described above, according to the present invention, the side support portion for the seated person provided on the side portion in the width direction of the seat can be formed by changing the shape of the seat surface. There is an effect that it can be formed without using a separate member as in the conventional case. Further, by adopting the means of the second aspect of the invention and the following, there is an effect that the side support portion can be formed reliably and easily, and the formed side support portion can be surely maintained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a seat to which a net seat according to the present invention is applied.

FIG. 2 is a perspective view of a seat frame of the seat back shown in FIG.

FIG. 3 is a perspective view of a seat face body of the seat back shown in FIG.

4 is a sectional view of the seat back portion shown in FIG. 1, taken along the line IV-IV.

FIG. 5 is a cross-sectional view showing one side portion of FIG. 4 in an enlarged manner.

[Explanation of symbols]

10 sheets 12 seat cushion 14 seat back 18 Back support surface 20 seat frame 22 Sheet face piece 32 Rear 34 Front part (seat surface) 36,38 Side part 50 Side support section 52 Hanging member 54 Locking piece 60 hook pieces 62 side piece 62a guide shape 64 side piece 64a Guide shape (rotation blocking part) 66 bullets (tension maintaining part)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroshi Abe             25 Araco, Kamifujiike, Yoshiwara-cho, Toyota-shi, Aichi             Within the corporation F term (reference) 3B084 BA00 EC01 EC03

Claims (4)

[Claims] 1. A net seat in which a seat surface, at least a part of which is a net body, is attached to a seat frame forming a lateral shape skeleton in the width direction of the seat, wherein the back surface of the seat surface is in contact with a seated person. And between the position in the vicinity of the width direction side surface of the seat surface and the fixed portion as the seat constituent member located behind the seat surface,
A net seat characterized in that a hanging member for pulling the seat surface rearward in the fixing portion direction is attached, and a side support portion for a seated person is formed on a side portion of the seat surface. 2. The hanging member is made of a flexible material, and the fixing portion is a seat frame,
The hanging member and the fixed portion are attached to each other by providing a locking piece directed rearward at the fixed portion, and attaching a hook piece having a substantially U-shaped cross section to the hanging member. The net sheet according to claim 1, wherein a piece is engaged with the locking piece. 3. The hook piece engages with the locking piece in a pinched state, and is engaged with a rotation blocking portion for blocking rotation with respect to the locking piece in the engaged state. The net sheet according to claim 2, wherein: 4. The net sheet according to claim 2, wherein the hook piece is integrally provided with a tension maintaining portion for maintaining the tension of the hanging member made of a flexible material. .