JPS6340699B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a foldable seat
The invention relates to a striker structure used in applications such as 43918 (see Publication No. 43918).

Conventionally, in a folding rear seat incorporating a seat belt, the seat structure, lock structure, etc. had to be significantly reinforced in order to maintain the strength of the seat belt anchor member. For this reason, the sheet becomes heavy, and the striker that supports it also necessarily needs a large cross-sectional shape.

However, as shown in FIG. 2, in this conventional striker, the main body of the striker 1 is formed into a constant circular cross-sectional shape by bending a steel round bar into a U-shape, and the main body is made of a plate. The striker 1 was constructed by being fixed to the striker 2 by welding or the like. The striker 1 formed in this manner is attached to a wheel of a vehicle body A where a hook 3 rotatably attached via a lock device base 10 is located at the rear side of the seat cushion 8 of the rear seat a in the longitudinal direction. Attach it to the house 4 etc. with screws 5 etc., and attach the rear seat a to the upper horizontal part 1a as shown in Fig. 3.
By engaging the hook 3 of the rear seat a, the load of the rear seat a is stretched vertically at the engagement portion between the upper horizontal portion 1a, the vertical portion 1b, and the lower horizontal portion 1c of the striker 1. However, if an excessive load is applied to the anchor member 7 of the seat belt 6 attached to the rear surface of the seat cushion 8 due to a sudden stop due to a collision, etc., the load will be A tensile load is transmitted to the striker 1 in the substantially forward direction, and the load must be supported only by the upper horizontal portion 1a of the striker 1, so there is a risk that the striker 1 may be deformed.

As a way to solve this problem, it is possible to increase the strength of the front legs or to insert a reinforcing member on the underside of the seat, but this is not very preferable because it increases the weight. In particular, the upper horizontal part 1a, which is the engaging part, extends from the plate 2 toward the seat side and is cantilevered, so its base becomes weak against bending and twisting, so the strength of the base is reduced. If the diameter of the upper horizontal portion 1a of the engaging portion is increased to ensure that the diameter of the main body portion is increased, the striker 1
In addition, there is a lock device base 10 attached to the rear side of the hook 3 and seat cushion 8.
The diameter of the upper horizontal portion 1a also has to be increased, which increases the weight.

In addition, the reference numeral 9 in FIGS. 3 and 4 indicates a seat back rotatably provided on the seat cushion 8;
is a device arm attached to the seat back 9, 12 is a front leg attached to the floor 16 of the vehicle body A, 13 is a rotation center axis of the seat cushion 8 attached to the front leg 12, and 14 is supported by a lock device base 10. The center axis of rotation of the seat bag 9, 15 is a buckle attached to the tip of the seat belt 6, and 6' is a seat belt connected to the seat belt 6, the base end of which is fixed to the floor 16 of the vehicle body A, and the tip end of the seat belt 6. Attached is a tongue 15' which engages the buckle 15.

FIG. 1 is a schematic diagram of an automobile showing the mounting position of the rear seat a, and b is the front seat.

Before explaining the striker structure of the foldable seat or the like of the present invention, a method for folding the rear seat a will be explained.

First, as shown in FIGS. 5 to 7, the tip of the operating lever 18, which is rotatably supported by a rivet 17 on the device arm 11 attached to the seat bag 9, is inserted between the operating lever 18 and the rivet 17. When the operating lever 18 is pulled up against the spring force of the spring 19 interposed therein, the operating lever 18 rotates upward about the rivet 17, and the operating lever 18
A stopper pin 20 protruding from the back surface of the lock device base 10 is connected to an engagement groove 10a cut out in the upper end of the lock device base 10.
come off from Thereby, the seat bag 9 can be folded forward about the rotation center axis 14.

Note that the reference numeral 11a in the figure indicates the device arm 11.
a shaft hole through which the rotation center shaft 14 is penetrated;
11b is a rivet locking hole into which the rivet 17 is locked; 11c is a stopper pin penetration hole through which the stopper pin 20 is passed; 11d is a bolt hole for attachment to the seat back 9; 21 is a device arm 11.
Mounting bolt for attaching to seat bag 9, 18
a is a rivet 1 drilled in the operating lever 18;
7 is a through hole for a rivet.

As the seat bag 9 falls forward, the guide pin 2 protruding from the lower side of the back surface of the device arm 11
2 rotates in the X direction about the rotation center axis 14 along a guide groove 10b bored in the lock device base 10, and is rotated by a support shaft 23 below the guide groove 10b of the lock device base 10. Push the upper part 24a of the link 24 which is movably supported. When the upper part 24a of the link 24 is pushed, the link 24 rotates about the support shaft 23 in the Y direction.

When the link 24 rotates in the Y direction, the lock device base 10 and the lock device base 1
A support shaft 26 is inserted between the bracket 25 fixed to the
The upper end 3 of the hook 3 is rotatably supported by
The lower end 24b of the link 24 is in contact with the spring 2 which urges the hook 3 in the locking direction.
The upper end 3b of the hook 3 is pushed against the spring force 7, and the hook 3 is rotated in the Y' direction. When the hook 3 rotates in the Y' direction, the hook-shaped lower end 3a of the hook 3 comes off the striker 1, and the lock is released. As a result, the seat cushion 8
It is possible to rotate the seat bag 9 forward together with the seat bag 9 about the central axis of rotation 13 and fold it.

In addition, the reference numeral 10c in the figure indicates the lock device base 1.
A shaft hole 10 into which a support shaft 26 drilled at 0 is inserted;
d is a mounting hole for attaching the lock device base 10 to the seat cushion 8, and 10e is a bracket 25.
mounting holes, 10f and 10f' are protrusions for guiding the striker 1 formed at the lower end of the lock device base 10, 28 is a device base mounting bolt,
29 is a bracket mounting pin; 30 is the spring 27 installed upright at one end of the bracket 25;
A locking piece 31 that locks one end is a bumper rubber that is attached to the surface of the bracket 25 via a mounting member 32, and the guide protrusion 10f of the striker 1 and the lock device base 10 when the rear seat a is set. 10f' and the engagement groove 10g.

Therefore, the present invention was developed in view of the above-mentioned conventional problems, and it increases the torsional rigidity during the load applied to the striker that occurs during a car collision, etc.
The purpose of this is to prevent deformation of the striker.

Therefore, in the present invention, the striker structure is provided with an attachment part fixed to the vehicle body side and a main body part made by bending a steel rod having a circular cross-sectional shape into a substantially U-shape. In a striker structure for a folding seat, etc. that engages with a hook attached to a base member of a locking device provided on a folding seat, etc., a base portion having a diameter larger than the engaging portion is provided at both ends of the main body. The mounting portion is formed integrally with the main body portion in the form of a flat plate whose edges are crushed from both base portions, and both ends are bent inward to abut and welded. By doing so, the intended purpose was achieved.

The present invention will be described below with reference to illustrative embodiments.

In FIG. 8, reference numeral 40 denotes a striker for a folding rear seat according to the present invention, which includes mounting parts 42, 42' fixed to the vehicle body side, and a steel rod having a circular cross-sectional shape bent into a substantially U-shape. The main body has mounting parts 42, 42'.
Upper and lower horizontal portions 41, 41' extending substantially horizontally toward the seat side;
The main body part includes an engaging part 41b with which the hook 3 of the rear seat a engages, and root parts 41a and 41' having a larger diameter than the engaging part 41b. a is formed, and the base portions 41a, 41'a are provided at both ends of the main body, that is, at both the horizontal portions 41, 41'.

Further, the mounting portions 42, 42' are bent and extended inwardly at right angles from the tip edges of the root portions 41a, 41'a, and are curved 42a, 42'a toward the front or rear, Both ends 42b, 4
2'b are made to abut each other, and are formed integrally with the main body in the form of a flat plate that is crushed from the root portions 41a, 41'a to the end edges. Curvature 4 of the mounting portions 42, 42'
Bolt holes 43, 43' for attachment to the vehicle body A are bored near 2a, 42'a. or,
Contact portion of both ends 42b, 42'b (both crushed ends)
44 is welded and joined.

In the embodiment, both ends 42 of the mounting portions 42, 42'
Although the abutting portions (both crushed ends) 44 of the mounting portions 42, 42'b are abutted against each other, this is not restrictive. The abutting portions (both crushed ends) 44 may be overlapped with each other.

Next, an example of the manufacturing method of the striker 40 will be described. In FIG. 9, first, both ends of a steel rod (round bar) P having a circular cross-sectional shape and which is the material of the striker 40 are processed to a suitable length by hedding. Form into a large diameter P′. [See Figure 9 A and B] Next, the steel bar P is bent into a substantially U-shape to form the horizontal portion 41,
41' and a vertical portion 45 are formed. [See Figure 9 C] After that, the front part is bent inward at right angles from the middle of the large diameter P', and further curved either forward or backward to form both ends 42b, 42'b.
After making contact with the mounting part 4, crush the bent part and attach it to the mounting part 4.
2, 42', bolt holes 43, 43' are formed in the mounting parts 42, 42', and the abutment part 4
4 are welded together. [See Figure 9 D] Striker 40 formed as described above
As shown in FIG. 10, it is attached to the wheel house 4 or the like of the vehicle body A with attachment bolts 46, 46' with the attachment parts 42, 42' facing forward.

As described above, according to the present invention, a mounting portion fixed to the vehicle body side and a main body portion formed by bending a steel rod having a circular cross-sectional shape into a substantially U-shape are provided, and the engagement of the main body portion In a striker structure for a folding seat, etc., in which a part engages with a hook attached to a base member of a locking device provided on the folding seat, etc., a striker structure having a diameter larger than the engaging part is provided at both ends of the main body part. A structure in which a root portion is formed, and the mounting portion is formed integrally with the main body portion in a flat plate shape by crushing edges from both root portions, and both ends are bent inward and abutted and welded. As a result, the increase in weight of the vehicle body can be kept to a minimum and the bending strength can be improved.

Furthermore, according to the present invention, the striker can be manufactured using a single steel rod, so the number of processing steps can be reduced.

Further, according to the present invention, since the area of the mounting portion can be increased, a large diameter mounting bolt can be used, and therefore the mounting strength can be improved.
Moreover, since the plate thickness of the attachment part can be adjusted during molding of the attachment part, the attachment part can be easily processed to handle loads and manufactured at low cost.

In addition, by welding both ends of the mounting part,
Since the bending strength of the mounting portion is improved, not only the torsional rigidity of the main body under load is greatly improved, but also the mounting portion can be formed integrally with the main body using a high-strength steel rod. Compared to the conventional method in which the mounting part and the main body part are separately formed and fixed to each other, and the strength of the fixed part between the mounting part and the main body part is guaranteed, the present invention eliminates such a need. Since there is no such thing, the man-hours for managing strength guarantee can be omitted, and the product can be provided at a correspondingly low cost.

Further, according to the present invention, the bending rigidity of the main body is improved because both ends of the main body have large-diameter roots, so the engaging portion can be made smaller in diameter than the roots. As a result, the hook and base member of the locking device that engages with the engaging portion can be miniaturized.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the automobile showing the mounting position of the folding rear seat, Fig. 2 is an enlarged perspective view of the main parts seen from inside the car body, showing the shape of a conventional striker and its mounting position, and Fig. 3 is FIG. 4 is a partial perspective view showing the positional relationship between the rear seat and the striker; FIGS. The figure is an exploded perspective view of the same as above, FIG. 7 is a sectional view taken along the line -- in FIG. 6, and FIG. 8 is a perspective view of the striker according to the present invention.
FIGS. 9A to 9D are working process diagrams showing an example of a manufacturing method for the above striker, and FIG. 10 is a perspective view showing the state in which it is attached to the same vehicle body. a is a folding rear seat, 3 is a hook, 4 is a wheel house, 40 is a striker, 41, 41'
41a, 41'a are the base parts, 42 is the mounting part, 42a, 42'a are curved parts, 42b, 4
2'b is a tip, 43, 43' are bolt holes, 44 is an abutting part, and 45 is a vertical part.

Claims (1)

[Claims] 1 A mounting part fixed to the vehicle body side and a main body part made by bending a steel rod having a circular cross-sectional shape into a substantially U-shape are provided, and an engaging part of the main body part is provided on a folding seat, etc. In a striker structure such as a folding seat that engages with a hook attached to a base member of a locking device, a base portion having a diameter larger than the engaging portion is formed at both end positions of the main body portion, and the attachment portion has a diameter larger than that of the engaging portion. , a striker such as a folding sheet, characterized in that it is formed integrally with the main body in a flat plate shape whose edges are crushed from both bases, and both ends are bent inward and abutted and welded together. structure.