JP6425464B2 - Fasteners for seat for vehicle and seat core for vehicle - Google Patents

Description

  The present invention relates to a fastener for a vehicle seat fixed to a vehicle side, and a seat core for a vehicle.

In recent years, a sheet core material (hereinafter, referred to as a core material main body or core material) formed of a foamed particle molded body as a core material of a sheet member for weight reduction of a vehicle seat (hereinafter, may be referred to as a sheet). Is increasingly used. The foamed particle molded body is obtained by filling foamed particles in a molding space of a molding die, introducing high temperature water vapor into the molding space, and performing heat molding.
Such a core material is formed as follows in order to integrate the metal fitting and the core material with each other for coupling to a vehicle.
A connecting projection that functions as a fastener is integrally formed with the metal frame (see Patent Document 1, page 6 and FIG. 3), and the expanded particles are placed in the state that the metal frame is placed in the molding die. Fill and foam. Thereby, while the said connection convex part protrudes from the bottom part of a sheet | seat, the core material of the foaming particle | grain molded object with which a part of said metal frame was embedded is formed.
In such a core member, the protruding connection convex portion is connected as a fastener to a vehicle-side stopper portion to fix the core material to the vehicle.

  There is also known a structure in which a core material made of a foamed particle molded body and a metal frame integrally formed with a fastening member are separately formed, and the metal frame is attached to the core material later. For example, as shown in FIG. 6 of Patent Document 1, a linear groove is formed on the surface of a core made of a foamed particle molded body, and a metal frame is inserted into this groove.

Patent No. 5344395 gazette

However, as described above, in the core material in which the foamed particle molded body is integrally molded with the metal frame, it is difficult to form a molded body having high dimensional accuracy. This is because the foamed particle compact has a large shrinkage rate at the time of molding with respect to a non-shrink metal frame and it is difficult to predict the shrinkage state.
Normally, the vehicle is provided with a stopper, and the above-mentioned metal clasp is hooked on the vehicle-side stopper. However, when the metal frame is embedded in the foamed particle molded body, the foamed particle molded body is used. The embedded metal frame may be deformed or contracted locally, which may cause the position of the fastener to deviate from the set position. When the position of the fastener in the core material is shifted, it may be difficult to attach the core material to a predetermined position on the vehicle side, which may make it difficult to attach the seat to the vehicle side.

In addition, the contraction state at the time of molding of the above-mentioned foamed particle molded body is estimated in advance, and a clasp is disposed at a predetermined position in the mold, or a device for releasing the force acting on the metal frame or the clasp is devised. It is possible to reduce the displacement of the clasp and the distortion of the core material. However, such a design is very difficult, and there is a possibility that the productivity of the core material may be deteriorated since it is necessary to adjust the degree of molding.
Furthermore, in the core material in which the metal frame is embedded as described above, it has been difficult to completely separate the metal frame and the resin portion.

On the other hand, in the method in which the metal frame is simply inserted into and fixed to the groove, the problem of distortion of the foam particle molded body and displacement of the clasp does not occur, and complete separation is possible.
However, it was difficult to increase the holding power to the metal frame only by inserting the metal frame into the groove formed in the core material. Therefore, the metal frame may be detached from the core material depending on the impact.

As described above, as a core material for a sheet made of a foamed particle molded body, a core material that can be easily installed and that can be firmly fixed to a vehicle has been required.
The object of the present invention is to provide a fastener for a vehicle seat that allows a core material for a seat made of a foamed particle molded body to be securely fixed to a vehicle side with good workability, and a vehicle seat core incorporating the above-mentioned fastener. To provide materials.

A first aspect of the present invention is a fastener for a vehicle seat for securing a sheet core material of a vehicle seat to a vehicle, wherein the metal fitting comprises at least a latch retaining portion for securing to a vehicle and the surface of the sheet core material. A pressing portion in contact, a penetrating portion penetrating the sheet core member, and an exposed portion extended from the penetrating portion and exposed from the core member are connected,
The exposed portion is provided on the side facing the pressing portion with the penetrating portion interposed therebetween, a fixing member is attached to the exposed portion, and the sheet core material is held between the fixing member and the pressing portion. It is a structure which fixes the said metal fitting to the said sheet | seat core material, Comprising : The said latching | locking part and the pressing part are characterized by being provided facing the fixing member on both sides of the said sheet core material .

The "surface of the core" includes both the upper surface of the seat core on which the occupant sits and the bottom surface on the side of the main body frame of the vehicle.
In addition, the above-mentioned "hold the core material" is not limited to the case where the fixing member and the pressing portion face each other with the core material interposed therebetween. Even if the fixing member and the pressing portion do not face each other, both are provided on the opposing surfaces sandwiching the core material, and the pressing force of the fixing member against the core material and the pressing force of the pressing portion mutually As long as it contains a component acting in the reverse direction, it is included in the above "sandwich".

A second invention is characterized in that the pressing portion is formed in a plate shape, and the sheet core material is held by the flat portion of the plate and the fixing member.

A third invention is characterized in that the metal fitting has a plurality of hooks.

According to a fourth aspect of the invention, the metal fitting includes an extension member extending toward the backrest member provided on the vehicle seat, and the extension member is a hook portion for fixing to the seat core material on the backrest member side; And a backrest side hooking portion formed on the backrest side end of the member.

According to a fifth aspect of the present invention, there is provided a vehicle seat core material, in which the fastener of any of claims 1 to 5 is fixed to a core material main body made of a foamed particle molded body.

A sixth invention is characterized in that the core body is formed of a foamed particle molded body having an apparent density of 20 to 200 g / L.

According to the first aspect of the invention, the metal fitting includes at least the hooking portion, the pressing portion, the through portion, and the exposed portion connected to each other, and the through portion is a through hole formed in the sheet core material. The sheet core material can be held between the holding portion and the fixing member attached to the exposed portion to allow the metal fitting to be firmly fixed to the core material. Therefore, the sheet core material can be fixed to the vehicle side reliably and with good workability.
In addition, since the clasp can be fixed after the sheet core material is formed, there is no need to embed the metal fitting and integrally form at the time of formation of the core material made of the foamed particle molded body, for example. There is no risk of deformation during molding, or the position of the attachment mechanism being displaced from the set position.
Therefore, if the fastener of the present invention is used, the sheet core material formed of the foamed particle molded body can be securely fixed at a predetermined position of the vehicle with good workability.
Furthermore, if the fixing member is removed, the metal fitting can be easily removed from the sheet core, so that complete separation of metal and resin can be facilitated.

Further , the hooking portion and the pressing portion are provided opposite to the fixing member with the sheet core interposed therebetween, and the pressing portion is provided against the impact force applied in the direction of pushing the hooking portion. By having the function of reducing the impact force, the impact resistance of the vehicle seat equipped with the metal fitting is improved.

According to the second aspect of the present invention, the pressing portion is formed in a plate shape, and provided so as to sandwich the surface of the sheet core material by the flat surface portion of the plate, thereby distributing the impact force applied to the pressing portion more efficiently. Since the impact force applied to the metal fitting and the seat core can be alleviated, the impact resistance of the vehicle seat equipped with the metal fitting is improved.

According to the third aspect of the invention, since the metal fitting has the plurality of hooking portions, installation of the metal fitting becomes easier. Furthermore, if a plurality of hooking parts are connected by the connecting member, even if an impact is applied locally to one hooking part, the impact force can be dispersed to the entire fitting via the connecting member. Since this can be done, the impact resistance of the vehicle seat is improved.

According to the fourth invention, the extension member is attached to the metal fitting, and the backrest side hooking portion is formed at the tip of the extension member. Therefore, the hooking portion of the sheet core and the backrest side hooking portion And can be handled in an integrated manner. Further, the seat core can be connected to the backrest member and the vehicle body by the backrest side hooking portion.
In addition, since the metal sheet is fixed by holding the sheet core, there is no need to hold the sheet core on the backrest side holding portion.
Furthermore, the extension member can be easily fixed simply by hooking the hook portion of the extension member to the core material. Therefore, the attachment structure and attachment work to the seat core material of the backrest side holding part can be simplified, and the workability of the attachment work of the metal fitting to the seat core material is improved.

According to the fifth invention, the through portion of the fitting is incorporated into the through hole of the core body separately formed from the fitting, and the core body is held between the fixing member of the fitting and the pressing portion. A core material in which the metal fitting is firmly fixed to the core material body can be realized. Therefore, it is not necessary to use a metal frame in order to attach a clasp to a sheet core like before.
Therefore, it is possible to achieve weight reduction by using a foamed particle molded body lighter than foamed urethane for the core body of the present invention and omitting the metal frame.

According to the sixth aspect of the invention, since the core material main body is formed of the specific foamed particle molded body, the metal fitting is held by the core material, which is lightweight and is also excellent in impact resistance. It becomes.

FIG. 1 is a perspective view of a state in which a clasp is attached to a core material for a vehicle seat according to a first embodiment, as viewed obliquely from above. FIG. 2 is a perspective view of the fastener of the first embodiment. FIG. 3 is a schematic view corresponding to a cross-sectional view of the vicinity of the attachment portion of the first embodiment. FIG. 4 is a back view of the hooking fixing portion of the first embodiment. FIG. 5 is a schematic view of the vicinity of the attachment portion of the second embodiment. FIG. 6 is a schematic view of the vicinity of the mounting portion of the third embodiment. FIG. 7 is a schematic view of the vicinity of the attachment portion of the fourth embodiment. FIG. 8 is a schematic view of the vicinity of the attachment portion of the fifth embodiment. FIG. 9 is a schematic view of the vicinity of the attachment portion of the sixth embodiment. FIG. 10 is a schematic view of the vicinity of the attachment portion of the seventh embodiment. FIG. 11 is a schematic view of the vicinity of the assembly portion of the eighth embodiment.

The first to eighth embodiments will be described below. The first, second and eighth embodiments are reference examples of the present invention.
The first embodiment will be described with reference to FIGS.
FIG. 1 shows a state in which a metal fitting 2 of a pair of fasteners for fixing it to a vehicle is attached to a core material main body 1 of a vehicle seat made of a foamed particle molded body.
The core material body 1 is a component constituting a seat member of a vehicle seat, and the sheet member is configured by covering the core material body 1 with a cushion material such as urethane foam (not shown) or a skin material. The vehicle seat includes at least the core body 1.
The vehicle seat may be composed of the core body 1 and a backrest member (not shown). Usually, the backrest member is connected to the rear side when the core body 1 is installed in a car.
The foamed particle molded body constituting the core material main body 1 is a molded body obtained by filling a large number of foamed particles in a molding space of a molding die, heating the same and performing in-mold molding. The foamed particle molded body has higher compressive strength than the cushioning material, and the core material main body 1 can maintain its own shape by itself. Further, the shape of the sheet member covered with the cushioning material is also maintained by the core body 1.

  The material of the expanded particles is not particularly limited, and thermoplastic resins such as polyolefin resins, polystyrene resins, polyester resins, polycarbonate resins and polylactic resins, and polyolefin resins and polystyrene resins are used. Composite resin containing can be used. In particular, it is preferable to use a polyolefin resin.

  It is preferable that the apparent density of the foaming particle molded object which forms the said core material main body 1 is 20 g / L-200 g / L. In addition, if an apparent particle density is in the said range, while being excellent in the intensity | strength and impact resistance as a sheet core material for vehicles, a foaming particle molded object will be excellent also in the securing property of a clasp. From the above viewpoint, the apparent density of the foamed particle molded body is preferably 25 to 100 g / L, and more preferably 30 to 80 g / L. In addition, it is also possible to combine a plurality of foamed particle molded bodies having different apparent densities into one foamed molded body. In this case, the average apparent density of the entire foamed particle compact may be 20 g / L to 200 g / L. In addition, an apparent density can be calculated | required from the submergence method calculated from the volume increase at the time of making a foamed-particles compact body submerged in water.

Preferably, the shape of the core body 1 is forward in the traveling direction of the vehicle, and the thickness of the front portion 3 corresponding to the occupant's thighs is made thicker than other portions.
And in this 1st embodiment, a pair of collar part holding parts 5 and 5 are formed between the above-mentioned front part 3 and standing part 4 of the back. It is preferable that the ridge portion holding portions 5 and 5 be inclined surfaces in which the thickness of the core body 1 gradually decreases toward the center, and the ridge portion holding portion may form a hole-shaped ridge portion holding hole.
The upright portion 4 is a portion which rises from the upper surface at the rear end of the core body 1 and contacts with a backrest member (not shown).
Further, a hooking fixing portion 4a for hooking a hooking portion 10a of the extension member 10 described later is formed in the rear standing portion 4 of the core body 1 (see FIG. 4).

Further, on the front portion 3 side of the core body 1, a pair of attachment portions 6, 6 for fixing the metal fitting 2 is provided, which will be described in detail later. The pair of attachment portions 6 and 6 are formed in such a manner that the distance between the pair of attachment portions 6 and 6 matches the distance between the pair of stoppers fixed on the vehicle side to which the core body 1 is attached.
Further, the bottom surface of the core body 1 has a shape in accordance with the shape of the mounting surface of the vehicle to which the core body 1 is attached.

By covering the core body 1 with a cushion material to form a sheet member, the buttocks holding portions 5 and 5 become smooth concave portions, and the concave portions of the buttocks stably hold the buttocks of the occupant. Be done.
However, the shape and size of the core body 1 are set according to the type of vehicle, and are not limited to those shown in FIG.

The metal fitting 2 constituting the fastener of the first embodiment is not particularly limited in its shape, such as a wire material, a pipe, a rod member, etc., as long as it has a strength for fixing to the vehicle main body. The material is not limited, such as metal. For example, as shown in FIGS. 1 and 2, it is a member formed of a metal round bar, and the U-shaped hooking portion 7 in which the round bar is bent and the hooking from the both ends of the hooking portion 7 It has pressing portions 8 and 8 formed in a direction orthogonal to the protruding direction of the stopping portion 7 and penetrating portions 9 and 9 bent at a right angle from the pressing portions 8 and 8.
The tip of the opposite side facing the pressing portions 8, 8 is formed so as to be exposed from the core body 1 at the tip portion formed to be extended on the extension of the penetrating portions 9, 9. And an exposed portion 9a.

Further, a male screw is formed on the outer periphery of the exposed portion 9a which is the tip opposite to the pressing portion, and can be fixed by a fixing member. Therefore, a core material can be pinched | interposed by the said holding | suppressing part and the said fixing member, and a metal fitting can be firmly fixed to a core material.
The portion including the hooking portion 7, the pressing portion 8, the through portion 9, and the exposed portion 9 a is also referred to as an attachment mechanism portion, and the attachment mechanism portion is attached to the attachment portion 6 of the core body 1.

Furthermore, in the embodiment shown in FIGS. 1 and 2, the extension member 10 is connected to the hooking portion 7. The extension member 10 extends in the direction toward the rear upright portion 4 in a state where the attachment mechanism portion of the metal fitting 2 is attached to the attachment portion 6 of the core body 1. Further, the extension member 10 has a hook portion 10a whose front end side is bent at a right angle, and a backrest side hooking portion 11 which is bent at a right angle upward from the hook portion 10a and formed at the front end There is. The backrest side hooking portion 11 is formed by bending the extension member 10 in a ring shape and welding the tip.
And in the extension member 10, the length from the attachment mechanism portion to the hooking portion 10a corresponds to the length from the attaching portion 6 of the core body 1 to the hooking fixing portion 4a.
Further, the backrest side hooking portion 11 is configured so as to be able to be coupled with a back portion (not shown) of the vehicle body connected to the upright portion 4 and a backrest member when the hooking portion 10a is hooked to the hooking fixing portion 4a. It is done.

On the other hand, although the attaching part 6 of the said core material main body 1 is shown in FIG. 3, the extension member 10 welded to the said latching part 7 is abbreviate | omitted here.
As shown in FIG. 3, the mounting portion 6 is a through hole 12 for a hooking portion through which the hooking portion 7 of the mounting mechanism portion is penetrated, and a through hole for a through portion through which the through portions 9 are penetrated. It has 13,13.
The through holes 12 and 13 constitute a built-in hole of the present invention. It is preferable that the through holes 12 and 13 be formed larger than the hooking portion 7 and the through portion 9 to be inserted, respectively, and the mounting mechanism portion be easily assembled to the mounting hole.
Furthermore, if a gap is formed between the through portion 9 and the through holes 12 and 13 in consideration of the shrinkage of the foamed particle molded body constituting the core material body 1, the hooking portion 7 or the through portion 9 is formed. Can be finely adjusted in the through holes 12 and 13.
In FIG. 3, the through hole 13 of the sheet core refers to the portion from the lower surface of the pressing portion of the metal fitting to the bottom of the recess 1 c of the core body 1. Moreover, the penetration part 9 which is a part inserted in the said through-hole means the metal fitting part (except a pressing part and an exposure part) from a pressing part to an exposure part.

Further, around the opening on the upper surface side of the core body 1 of the through holes 12 and 13, a recess 1a including the opening of the through holes 12 and 13 is formed inside. Although this recessed part 1a is not an essential component, the pressing parts 8 and 8 of the attachment mechanism part attached to this attaching part 6 are accommodated, and the outer surface of a core material and a pressing part are made to contact, A core material member It does not project on the upper surface of 1.
Furthermore, in the portion where the exposed portions 9a and 9a protrude, a recessed portion 1c of a size maintaining a gap is formed between the outer periphery of the washer portion of the nut 14 with a washer described later. A nut 14 tightened to the male screw 9a is fitted in the recess 1c. The exposed portions 9a and 9a may be partially exposed from the through holes, and may not be projected to the surface of the core body 1 and may be accommodated in the recessed portion 1c.
In addition, in FIG. 3, the exposed part 9a is a metal fitting part from the bottom part of the recessed part 1c to the sheet | seat core material surface.

  In the first embodiment, the extension member 10 is welded to the hooking portion 7 and passes from the attachment portion 6 of the front portion 3 of the core body 1 to the collar portion holding portion 5. It extends to the upright portion 4 side along the upper surface. However, the extension member 10 may be connected to any part of the attachment mechanism as long as the attachment mechanism and the backrest side hooking part 11 can be connected to each other. I do not care. For example, the extension member 10 may pass through the bottom side of the core body 1.

However, when the cushioning material is placed on the core body 1 to form the seat member, the extending member 10 is positioned at a position where the thickness of the cushioning material is increased so that the extending member 10 does not affect the sitting comfort. It is preferable to do.
In addition, if the linear recess 1b shown in FIG. 1 is formed on the upper surface of the core body 1 and the extension member 10 is fitted in the linear recess 1b, the extension member 10 protrudes from the upper surface of the core body 1 Without being able to remove the influence on a comfortable feeling more certainly, the above-mentioned linear crevice 1b can also be made to function as position maintenance of extension member 10.

  Furthermore, it is preferable that the core material body 1 has a thick shape in a portion in contact with the thighs of the occupant and a thin thickness in a portion in contact with the buttocks. Moreover, it is preferable that it is 30-200 mm, and, as for the average thickness of the core material main body 1 calculated | required except a hole, it is more preferable that it is 50-180 mm. In addition, since shrinkage | contraction of a foaming particle molded object will occur easily when such a thickness difference exists in the core material main body 1, it is especially useful to use the metal fitting by this invention.

2 and 3 show the metal fitting 2 of one of the attachment portions 6 on the left side in FIG. 1 among the pair of attachment portions 6 and the attachment portion 6 to which the attachment mechanism portion is attached. The right attachment portion 6 is not shown, but the metal fitting 2 shown in FIG. According to the shape of the attachment mechanism of the metal fitting 2, the shapes of the pair of attachment portions 6, 6 are also formed in line symmetry with each other.
The left and right metal fittings 2 and the mounting portions 6 are line symmetrical with respect to a straight line L passing through the left and right centers of the core body 1 shown in FIG.
By making the left and right metal fittings 2 and the mounting portion 6 line-symmetrical in this way, the balance between the left and right of the core body 1 is improved, and when the sheet member receives an impact, stress concentrates on one of the mounting portions 6 It is hard to happen.

The procedure for attaching the metal fitting 2 as described above to the core body 1 is, for example, as follows.
First, the extension mechanism 10 is attached to the front portion 3 of the core body 1 through the notch 4 b of the upright portion 4. Next, the backrest side hooking portion 11 is positioned on the back side of the rising portion 4, and as shown in FIG. 4, the hooking portion 10a of the extension member 10 is hooked on the hooking fixing portion 4a.
Specifically, the pair of through parts 9, 9 are inserted into the through holes 13, 13 for the through part, and the hooking part 7 is inserted into the through hole 12 for the hooking part, and the through part 9 and the hook The tip of the stopper 7 in the insertion direction is made to project from the core body 1. At this time, since the through holes 12 and 13 have a margin as described above, the hooking portion 7 and the through portions 9 can be easily penetrated.

  Next, if the exposed portion 9a connected to the through portion 9 protruding from the through holes 13, 13 is formed as an external thread, the nut 14 with a washer, which is a fixing member of the present invention, is tightened on the external thread. The core body 1 is held between the pressing portion 14 and the pressing portion 8. The nut 14 with a washer is formed larger than the through hole 13. Thus, the metal core body 1 is held between the nut 14 with a washer and the pressing portion 8 to fix the metal fitting 2. Therefore, since it is possible to oppose the tensile force at the time of the impact in the direction of pulling the hooking part 7 in the entire pressing part 8, the pullout strength is improved as compared with the conventional hooking structure. Furthermore, since the core body 1 is held between the pressing portion 8 and the exposed portion 9a, the impact force of both the tensile force and the pressing force acting on the core body 1 can be opposed, and the impact resistance of the vehicle seat Improves the quality.

The hooking portion 7 protruding from the through hole 12 is a portion to be hooked to the hooking portion fixed to the vehicle, but if necessary, a gap between the hooking portion 7 and the through hole 12 and the position thereof Adjustment is possible within the range of the clearance between the through hole 13 and the through portion 9.
For example, when the distance between the pair of stops provided in the vehicle is determined in advance by the vehicle, the pair of mounting portions 6 is formed in accordance with the distance between the stops. , 6 can be finely adjusted to the distance between the stoppers of the vehicle before the nut 14 is tightened.

As described above, the length of the extension member 10 is set in accordance with the length from the attaching portion 6 to the hooking fixing portion 4a, and the hooking portion 10a hooked to the hooking fixing portion 4a is hooked The fixing portion 4a is pressed against and fixed without rattling.
When the attachment mechanism of the metal fitting 2 is fixed to the attachment portions 6 in this manner, the cushioning material and the surface material are attached to the core main body 1 to complete the sheet member.

As described above, in the first embodiment, since the core body 1 is held by the holding portion 8 and the nut 14 of the exposed portion 9a in the mounting portion 6 to fix the mounting mechanism portion, the members are separately formed. The core body 1 and the metal fitting 2 can be firmly connected so as not to rattle.
Furthermore, since the metal frame and metal fittings are embedded and not integrally molded at the time of molding of the core body 1, the core portion 1 is not locally distorted, and the attachment portion 6 can be accurately provided at the set position. . Therefore, since the attachment mechanism part fixed to the attachment part 6 does not shift | deviate from a setting position easily and the latching part 7 respond | corresponds to the position of the stop part of a vehicle, the workability of the latching operation | work to a vehicle also improves.

  Furthermore, in the first embodiment, since the backrest side hooking portion 11 is integrated with the attaching mechanism portion by the extension member 10, the nut 14 is used when the metal fitting 2 is fixed to the core main body 1 Tightening work is sufficient only on the mounting portion 6 side. In order to fix the backrest side hooking portion 11, it is sufficient to hook the hooking portion 10 a to the hooking fixing portion 4 a of the upright portion 4 and the tightening operation of the nut 14 or the like becomes unnecessary. Fixing work is simplified.

Further, since the front portion 3 for clamping the core body 1 by clamping the nut 14 is a portion of the core body 1 having a large thickness, it can withstand the strong clamping force of the nut 14.
On the other hand, since the standing portion 4 is sufficient in thickness to be provided with the hooking fixing portion 4a for hooking the hooking portion 10a of the extension member 10, it does not have to be so thick.

Furthermore, although the nut 14 with a washer is used as a fixing member of this invention in 1st Embodiment, a fixing member is not restricted to this. For example, the washer and the nut may be separate members, or may be tightened only by the nut.
Alternatively, without using a screw connection, a barbed stopper ring or the like as a fixing member is press-fit into the exposed portion 9 a of the through portion 9, and the core body 1 is held between the stopper ring and the pressing portion 8. You may

  As in the first embodiment shown in FIG. 3, while the core body 1 is sandwiched between the fixing member 14 and the pressing portion 8, the pressing portion 8 and the hooking portion 7 sandwich the core body 1. When it is formed in the opposite position, the removal force (impact force applied in the direction of pulling out the hooking portion 7 from the core body 1) applied to the hooking portion 7 is efficiently dispersed in the core body 1 It is considered that the impact resistance of the sheet is further improved.

FIG. 5 is a schematic view showing the mounting portion 6 of the second embodiment. This FIG. 5 is a figure corresponded to the one side of the attaching part 6 in FIG. 1, and the extension member 10 is abbreviate | omitted also here.
As shown in FIG. 5, the attachment mechanism of the second embodiment includes the pressing portions 8 on both sides of the hooking portion 7, but the penetrating portion 9 is provided continuously to only one of the pressing portions 8. There is.
In the core body 1, one through hole 12 for the hooking portion constituting the assembly hole and one through hole 13 for the through portion are formed. The other configuration is the same as that of the first embodiment.
The same reference numerals are used for components having the same functions as in the first embodiment, and the detailed description of each is omitted.

Also in the second embodiment, the core body 1 is held between the nut 14 and the pressing portion 8 by tightening the nut 14 with a washer on the external thread of the exposed portion 9 a extended from the penetrating portion 9. Can.
Of the pair of pressing portions 8 and 8, the pressing portion 8 which is not continuous with the through portion 9 does not face the nut 14 tightened to the exposed portion 9 a. However, since the tightening force of the nut 14 also acts on the other pressing portion 8 via the hooking portion 7, the pressing portion 8 which is not continuous with the through portion 9 is also a core material together with the nut 14. It functions as a pressing portion of the present invention for holding the main body 1.
In the second embodiment as well, as in the first embodiment, the metal fitting 2 can be firmly fixed to the core body 1 made of a foamed particle molded body, and the position of the hooking portion 7 can be appropriately maintained. Therefore, the seat member can be fixed to the stop of the vehicle with certainty and good operability.

The configuration of the third embodiment shown in FIG. 6 is the same as that of the first embodiment except for the attachment portion 6. FIG. 6 is also a view corresponding to the attachment portion 6 on the left side in FIG.
The same reference numerals as in the first embodiment are used for components having the same functions as those in the first embodiment, and the following description will be made focusing on differences from the first embodiment.
Although not shown in FIG. 6, the extension member 10 provided with the backrest side hooking portion 11 is also welded to the hooking portion 7 in the third embodiment. However, in the third embodiment, the extension member 10 reaches the buttocks holding portion 5 from the front of the core body 1 and reaches the rear of the core body 1 along the inner wall surface of the buttocks holding portion 5 It extends up to the upright portion 4.

The attachment mechanism portion of the third embodiment is provided with exposed portions 9a and 9a on the opposite side of the holding portion 7 with respect to the pressing portions 8 and 8 continuously provided at right angles on both sides of the holding portion 7. Is configured.
The point that the hooking portion 7 of the attaching mechanism does not penetrate the core body 1 and only the penetrating portion 9 penetrates the core body 1 is different from the first and second embodiments. Therefore, only the through holes 13 and 13 for the through portion are formed in the core body 1 as the incorporation holes of the present invention, and the through holes for the hooking portion are not formed. Therefore, the through-hole processing location of the core body 1 can be reduced.
Further, at the position corresponding to the opening of the through hole 13 on the upper surface of the core body 1, a recess 1 d larger than the washer portion of the nut 14 and in which the exposed portion 9 a and the nut 14 do not protrude is formed On the bottom surface of the case, there is formed a recess 1e including the opening of the through hole 13 so as to accommodate the pressing portions 8, 8.

In the third embodiment, after inserting the through portion 9 into the through hole 13, the nut 14 is tightened to the exposed portion 9 a which protrudes from the through hole 13 in the recess 1 d.
Then, the pair of pressing portions 8 and 8 and the nuts 14 and 14 in contact with the bottom surface of the core body hold the core body 1 and fix the mounting mechanism of the metal fitting 2 to the core body 1.
Also in the third embodiment, the metal fitting 2 can be firmly fixed to the core material main body 1 made of the foamed particle molded body, and the position of the hooking portion 7 can be properly maintained.
In the third embodiment, the hooking portion 7 is provided on the same side as the pressing portion 8, and in particular, the impacting force (pressing force) applied in the direction in which the hooking portion 7 is pushed in The pressing portion 8 can reduce the impact force. Therefore, the impact resistance of the vehicle seat equipped with the metal fitting is improved.

  Further, in the third embodiment, since the concave portion 1d as described above is formed, and the nut 14 and the exposed portion 9a are accommodated therein, the nut 14 and the exposed portion 9a project on the seat surface. The safety and comfort when sitting are improved. This is not limited to the third embodiment, but, as in the fourth to seventh embodiments shown in FIGS. When providing a member, it is a preferable aspect.

The attachment mechanism part of 4th Embodiment shown in FIG. 7 is the structure which abbreviate | omitted one penetration part 9 of 3rd Embodiment shown in FIG. In the fourth embodiment, the same reference numerals as in FIG. 6 are used for components having the same functions as in the third embodiment.
7 is also a view corresponding to the attachment portion 6 on the left side in FIG. 1, and the extension member 10 welded to the hooking portion 7 is also omitted here.
In the fourth embodiment, a through hole 13 for a through portion is formed to allow the through portion 9 located only on one side of the hooking portion 7 of the attachment mechanism to pass through. Then, the nut 14 is tightened to the exposed portion 9 a which penetrates the through hole 13 for the through portion, and the core body 1 is held between the pair of pressing portions 8 and the nut 14.
In the fourth embodiment as well, the metal fitting 2 can be firmly fixed to the core material main body 1 made of the foamed particle molded body, and the position of the hooking portion 7 can be appropriately maintained.

The attachment mechanism portion of the fifth embodiment shown in FIG. 8 directly provides the pair of through portions 9 and 9 continuously with the hook portion 7 without the pressing portion, and the hook portion 7 and the through portion 9. , 9 and a plate-like pressing portion 15 which is a plate-like member as a pressing portion is welded. The plate-like pressing portion 15 is welded to the base ends of the pair of penetrating portions 9 so as to cross the hooking portion 7, so that the pressing portion is formed inside the U shape of the hooking portion 7. Therefore, the portion of the plate-like pressing portion 15 that protrudes to the outside of the U-shape can be reduced or eliminated. For example, when the plate-like pressing portion 15 is accommodated within the width of the hooking portion 7, the width of the fitting installation surface can be narrowed compared to the other embodiments.
FIG. 8 is also a view corresponding to the attachment portion 6 on the left side in FIG. 1, and the extension member 10 welded to the hooking portion 7 is also omitted here. And in this 5th Embodiment, the same code | symbol as FIG. 6 is used for the component which has a function similar to 3rd Embodiment.
In addition, when the core member is held by the flat portion of the plate-like pressing portion, the impact force applied to the pressing portion can be received in a wide area, so that the impact resistance of the vehicle seat equipped with the metal fitting is improved.

In the fifth embodiment, in a state where the through portions 9, 9 are inserted into the through holes 13, 13 constituting the assembly hole of the present invention, and the plate-like pressing portion 15 is in contact with the core body 1, The nut 14 is tightened to the exposed portion 9 a protruding from the through hole 13. Thus, the core body 1 is held between the plate-like pressing portion 15 and the nut 14.
In the fifth embodiment, the upper surface of the core body 1 simultaneously includes the openings of the pair of through holes 13 and 13, and the exposed portion 9a and the nut 14 form a recess 1d for accommodating the core body 1. The exposed portion 9 a and the nut 14 do not protrude to the upper surface of the core body 1.
Also in the fifth embodiment, the metal fitting 2 can be firmly fixed to the core material main body 1 made of the foamed particle molded body, and the position of the hooking portion 7 can be appropriately maintained.

The attachment mechanism portion of the sixth embodiment shown in FIG. 9 omits one of the pair of pressing portions 8 in the fourth embodiment shown in FIG. The holding portion 8 is formed, and a through portion 9 directly connected to the holding portion 7 is provided on the side of the holding portion 7 opposite to the holding portion 8.
Note that FIG. 9 is also a view corresponding to the attachment portion 6 on the left side in FIG. 1, and the extension member 10 welded to the hooking portion 7 is also omitted here.
In the sixth embodiment, the one through portion 9 is inserted into the through hole 13 for the through portion, which is the installation hole of the present invention, and the nut 14 is tightened to the exposed portion 9 a protruding from the through hole 13. The core body 1 is held between the pressing portion 8 and the nut 14.

In the sixth embodiment, the pressing portion 8 and the nut 14 do not face each other with the core body 1 interposed therebetween, and the facing positions are shifted. However, since the tightening force of the nut 14 is also transmitted to the pressing portion 8 through the penetrating portion 9 and the hooking portion 7, the core body 1 can be held by the pressing portion 8 and the nut 14.
Therefore, also in the sixth embodiment, the metal fitting 2 can be firmly fixed to the core material main body 1 made of the foamed particle molded body, and the position of the hooking portion 7 can be properly maintained.

The attachment mechanism portion of the seventh embodiment shown in FIG. 10 omits one penetration portion 9 out of the pair of penetration portions 9 and 9 of the fifth embodiment shown in FIG. The same as the fifth embodiment.
FIG. 10 is also a view corresponding to the attachment portion 6 on the left side in FIG. 1, and the extension member 10 welded to the hooking portion 7 is also omitted here.
In the seventh embodiment, one through portion 9 is inserted into the through hole 13 for the through portion, which is a built-in hole of the present invention, and the nut 14 is tightened to the exposed portion 9 a protruding from the through hole 13. The core body 1 is held between the plate-like pressing portion 15 and the nut 14.
Also in the seventh embodiment, the metal fitting 2 can be firmly fixed to the core material main body 1 made of the foamed particle molded body, and the position of the hooking portion 7 can be appropriately maintained.

FIG. 11 is a schematic view of the eighth embodiment in which the metal fitting 2 has a pair of hooking portions 7 and a pair of attachment mechanism portions are connected by a connecting member 16.
The pair of attachment mechanisms of the eighth embodiment are axisymmetrical to the attachment mechanisms of the second embodiment shown in FIG. Then, in each attachment mechanism portion, the connecting member 16 is connected to the pressing portion 8 in which the penetrating portion 9 is not continuous, and a pair of attachment mechanism portions are coupled by the connection member 16 to constitute one metal fitting 2 There is. The pressing portion 8 and the connecting member 16 may be the same member, or different members may be connected by welding or the like.
In each of the attachment portions 6, the attachment mechanism portion is fixed as in the second embodiment, but the description thereof is omitted.
Further, the extension member 10 is connected to the connection member 16 and the pair of attachment mechanisms, and the backrest side hooking portion 11 is provided at the tip thereof. Although not shown in the drawings, each extension member 10 needs to be formed into a shape that matches the shape of the core body 1.

In such a metal fitting 2, the pair of attachment mechanisms and the plurality of backrest side hooking portions can be handled integrally, so that the workability of the attachment operation is improved. Further, since the impact force locally applied to one metal fitting 2 can be dispersed via the connecting member 16, the impact resistance of the vehicle seat equipped with the metal fitting 2 is improved.
In addition, the attachment mechanism part connected by the said connection member 16 is not restricted to the thing of illustration, For example, the thing of all the above-mentioned embodiments is applicable.
Further, in the eighth embodiment, the connecting member 16 is connected to one of the pressing portions 8, but the connecting member 16 may be connected at any position of the attachment mechanism.

As in the first to eighth embodiments, various structures can be considered as the attachment mechanism of the present invention. The structure is not limited to the above embodiment as long as the core body 1 can be held by the fixing member such as the nut 14 attached to the through portion 9 penetrating the core body 1 and the pressing portion 8. It may be a line symmetrical shape of the one shown above or any other shape.
Further, in the first to eighth embodiments, the shape of the metal fitting 2 fixed to the pair of attachment portions 6 and 6 is made line symmetrical with each other, and in the first to seventh embodiments, only the attachment portion 6 on the left side is Although shown in the drawing, either of the symmetrical metal fittings 2 may be attached to the pair of attachment parts 6, 6, or the metal fittings 2 of the same shape may be attached to both.

As in the first, second, and eighth embodiments shown in FIGS. 3, 5 and 11, in the attachment mechanism having a shape in which the hooking portion 7 penetrates the core body 1, the hooking portion 7 and the penetration portion 9 are provided. The exposed portion 9a at the tip of the tip is located on the same side with respect to the core body 1, and the pressing portion 8 is located on the opposite side to the hooking portion 7. Therefore, the pressing portion 8 supports the force in the direction in which the hooking portion 7 is pulled, and the impact resistance to this tensile force is improved.
On the other hand, as in the third to seventh embodiments shown in FIGS. 6 to 10, in the attachment mechanism portion having a shape in which the hooking portion 7 does not penetrate the core body 1, the hooking portion having a large opening in the core body 1 There is no need to form the through holes 12 for the purpose. Therefore, the strength around the hooking portion 7 in the core body 1 can be maintained.
Further, in the third to seventh embodiments, since the pressing portion 8 is in contact with the lower surface side of the core main body 1, the impact resistance is improved particularly against the pressing force from the side of the holding portion 7.

Further, in the configuration provided with the pressing portion and the penetrating portion 9 on both sides of the hooking portion 7, the clamping force for clamping the core body 1 acts on both sides of the hooking portion 7, so that one side of the hooking portion 7 There is an advantage that it is easy to make the holding force act evenly as compared with the case where the pressing portion and the penetrating portion 9 are provided only.
Although it may be difficult to apply the holding force evenly even in the case where the through portion 9 is provided only on one side of the latch portion 7, it is difficult to form only one insertion hole 13 for the through portion constituting the assembly hole. Since the formation of the through holes 13 can reduce the portion where the strength may be reduced.

In any of the above-described embodiments, the extension member 10 provided with the backrest side hooking portion 11 is connected to the attachment mechanism portion, but the fastener of the present invention comprises the extension member 10 and the backrest side hooking portion 11 It does not have and may be comprised only by the said attachment mechanism part.
Further, although the example in which the metal fitting 2 is fixed to the core material main body 1 made of the foamed particle molded body is described above, the core material main body to which the metal fitting of the present invention can be fixed is made of the foamed particle molded body In addition, any non-foamed resin, wood, or any other material that can maintain the strength and shape capable of forming the built-in hole into which the attachment mechanism is incorporated can be used.
However, the metal fitting of the present invention is most suitable as a metal fitting for a core of a vehicle seat made of a foamed particle molded body.

  It is applicable to fixation of various vehicle seats.

DESCRIPTION OF REFERENCE NUMERALS 1 core body 2 metal fitting 4 erecting portion 4 a hooking fixing portion 7 hooking holding portion 8 pressing portion 9 penetrating portion 9 a exposed portion 10 extension member 10 a hooking portion 11 backrest side hooking portion 12 through hole 13 (for hooking portion) Through-hole 14 (for fixing member) nut 15 plate-like pressing portion 16 connecting member

Claims (6)

In a fastener of a vehicle seat for fixing a seat core of a vehicle seat to a vehicle,
The metal fitting is extended from at least the hooking portion fixed to the vehicle, the pressing portion contacting the surface of the sheet core, the penetrating portion penetrating the sheet core, and the sheet core. The exposed portion is connected to the exposed portion exposed from the material, and the exposed portion is provided on the side facing the pressing portion with the through portion interposed therebetween, and a fixing member is attached to the exposed portion to form the fixing member The sheet core member is held by the pressing portion to fix the metal fitting to the sheet core member, and the hooking portion and the pressing portion face the fixing member with the sheet core member interposed therebetween. Fasteners for vehicle seats that are provided . The fastener for a vehicle seat according to claim 1 , wherein the pressing portion is formed in a plate shape, and the sheet core material is held by the flat portion of the pressing portion and the fixing member . The fastener for a vehicle seat according to claim 1 or 2, wherein the fastener has a plurality of hooking portions . The metal fitting includes an extension member extending toward the backrest member provided on the vehicle seat,
The extension member is a hook portion for fixing the metal fitting to the sheet core on the backrest member side;
The fastener for a vehicle seat according to any one of claims 1 to 3 , further comprising: a backrest side hooking portion formed at a backrest side end of the extension member . The seat core material for vehicles which fixed the clasp in any one of Claims 1-4 to the core material main body which consists of foam particle | grain molded object. The vehicle seat core according to claim 5 , wherein the core body is formed of a foamed particle molded body having an apparent density of 20 to 200 g / L.

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