JPH072008A - Locking device for seat for automobile - Google Patents

Abstract

PURPOSE:To prevent the generation of the chattering of a link mechanism when a seat is accommodated, in the constitution in which a hook for engaging the seat cushion of the seat with a car room floor side is installed and the link mechanism which accommodates the hook inside the seat cushion, in interlocking with the seat cushion when the seat is accommodated. CONSTITUTION:A hook 16 which elastically enganges the seat cushion 5 of a seat 1 for a car room floor 3 side, urged by the first spring 20, when the seat 1 is used is installed. A link mechanism 25 which accommodates the hook 16 inside the seat chshion 5, in interlocoking with the forward turn, if the seat cushion 5 is turned forwardly, when the above-described seat 1 is accommodated, is installed. The second spring 36 for elastically joining the link mechanism 25 with the hook 16 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat locking device.

[0002]

2. Description of the Related Art The above-mentioned automobile seat locking device includes
Conventionally, there is one disclosed in Japanese Utility Model Laid-Open No. 1-168329.

According to this, the front portion of the seat cushion is pivotally supported by the bracket projecting toward the passenger compartment floor side so that the rear portion of the seat cushion can be rotated back and forth.
Further, a hook is pivotally supported on the rear portion of the seat cushion so as to be rotatable back and forth, and a spring for rotating the hook in one direction is provided. When the seat cushion is rotated rearward, the hook engages with the striker mounted on the vehicle body floor side by the biasing force of the spring. As a result, the seat cushion is locked to the vehicle body floor side, and the seat cushion can be seated.

Further, a link mechanism for connecting the bracket and the hook is provided, and when the seat cushion is rotated forward to store the seat cushion, the hook is rotated to the seat cushion side through the link mechanism. It is designed to be used. As a result, the hook is housed inside the seat cushion.

[0005]

By the way, according to the above-mentioned conventional structure, when the seat cushion is pivoted rearward and the hook is elastically engaged with the striker by the bias of the spring, the spring is rotated. The urging by means of is only given to the striker via the hook, and the above urging does not act on the link mechanism. Therefore, the link mechanism is in a free state, and there is a risk of rattling due to vibration of the vehicle body.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is provided with a hook for engaging the seat cushion of the seat with the floor side of the passenger compartment, and the hook is attached to the seat cushion when the seat is stored. An object of the present invention is to prevent rattling of the link mechanism when the seat is accommodated when a link mechanism that interlocks to accommodate the hook inside the seat cushion is provided.

[0007]

In order to achieve the above object, the present invention is characterized in that, when the seat is in use, the seat cushion of the seat is biased by the first spring against the passenger compartment floor side. A hook for elastically engaging and a link mechanism for storing the hook inside the seat cushion when the seat cushion is rotated forward when the seat is stored In this case, a second spring for elastically joining the link mechanism to the hook is provided.

[0008]

[Operation] The operation of the above configuration is as follows.

When the seat 1 is used, a hook 16 is provided which is biased by the first spring 20 to elastically engage the seat cushion 5 of the seat 1 with the passenger compartment floor 3 side.
When the seat cushion 5 is rotated forward while the seat 1 is stored, the hook 16 is interlocked with this rotation.
In the case where the link mechanism 25 for accommodating the inside of the seat cushion 5 is provided, as described above, the hook 16 is elastically engaged with the vehicle compartment floor 3 side by the bias of the first spring 20. At this time, the urging force of the first spring 20 is only applied to the passenger compartment floor 3 side via the hook 16 and does not act on the link mechanism 25. Releases the bias and creates the risk of rattling.

However, the link mechanism 25 has the second spring 3
It is elastically joined to the hook 16 by 6, so that the link mechanism 25 is prevented from rattling.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 in the drawing is a bench type seat for an automobile, and the seat 1 is provided on a passenger compartment floor 3 in a passenger compartment 2. Reference numeral Fr in the figure indicates the front of the automobile. The right and left described below means the direction toward the front of the automobile.

The seat 1 has a seat cushion 5. A seat back 7 is pivotally supported on a rear portion of a seat frame 6 of the seat cushion 5 by a first pivot shaft 8 so as to be rotatable back and forth. The seat back 7 can be locked to the seat cushion 5 side at a desired front and rear angle, as shown in FIG.
If the seat 1 is turned rearward to the position shown by the solid line, the seat 1 can be seated, and if it is turned forward, the seat 1 is folded on the seat cushion 5.

The passenger compartment floor 3 has front and rear portions 3a, 3a.
a step is given by b, the front part 3a is the lower stage, the rear part 3b
Is at the top.

A bracket 10 is pivotally supported on a front portion 3a of the passenger compartment floor 3 by a second pivot shaft 11 so as to be rotatable front and back. The seat cushion 5 is attached to a pivot end of the second pivot shaft 11. Is pivotally supported by a third pivot shaft 12. On the other hand, the rear part of the seat cushion 5 is mounted on another bracket 13 attached to the rear part 3b of the passenger compartment floor 3.

When the seat cushion 5 is supported by the bracket 10 in the upright posture and the other bracket 13, the seat cushion 5 is releasably engaged with the passenger compartment floor 3 side and locked. A device 15 is provided.

The locking device 15 has a hook 16,
The hook 16 is pivotally supported on the left side of the rear portion of the seat frame 6 by a fourth pivot shaft 17 so as to be rotatable back and forth. On the other hand, a striker 19 is attached to the rear portion 3b of the passenger compartment floor 3 at a position corresponding to the hook 16.
The hook 16 can be engaged with and disengaged from the striker 19 by rotating the hook 16 back and forth, and the first spring 20 that rotates the hook 16 forward and urges the hook 16 to engage the striker 19. Is provided.

A stopper 21 is projectingly provided on the hook 16, and the hook 1 is rotated by a predetermined angle by the first spring 20.
When 6 rotates forward, the stopper 21 comes into contact with a portion 6a of the seat frame 6 to prevent the hook 16 from rotating further forward. A lever 22 is fixed to the hook 16.

A handle 23 is projectingly provided on the left side of the rear portion of the seat frame 6, and the handle 23 has a U shape in a plan view, which covers the hook 16 and the lever 22 from the outside thereof. It is provided.

The seat cushion 5 shown by the solid line in FIGS. 1 and 2 is in a state in which the hook 16 is engaged with the striker 19 and is engaged with the passenger compartment floor 3 side. The hook 16 in this case is actually elastically joined to the striker 19. From this state, the lever 22
When pulled up, as shown by the chain double-dashed line in Fig. 1,
The engagement of the hook 16 with the striker 19 is released, and the seat 1 is rotatable forward around the second pivot shaft 11 and the third pivot shaft 12.

When the seat 1 is stored, as described above, the lever 22 is pulled up to release the engagement of the hook 16 with the striker 19 (arrow A in FIG. 1,
Two-dot chain line shown).

Next, the seat back 7 is rotated forward around the first pivot shaft 8 (arrow B in FIG. 2), and the seat cushion 5 is moved.
Fold it up. Next, the handle 23 is gripped to integrally rotate the seat cushion 5 and the seat back 7 around the second pivot shaft 11 forward (arrow C in FIG. 2 and a chain line).

Further, when the rear portion of the seat cushion 5 is rotated downward around the third pivot shaft 12 (arrow D in FIG. 2) along with the above rotation, the seat back 7 is placed on the seat cushion 5.
The seat 1 is stored on the front portion 3a of the passenger compartment floor 3 in a folded state (shown by a chain double-dashed line in FIG. 2).

In order to make the seat 1 ready for seating as shown by the solid line in FIG. 2, the procedure reverse to the above may be carried out. In this case, when the rear portion of the seat cushion 5 is placed on another bracket 13, the hook 16 comes into contact with the striker 19 and once pivots backward, and then the first spring 20 urges the hook 16. Above striker 19
It is designed to automatically engage.

A link mechanism 25 for connecting the bracket 10 and the hook 16 is provided.

The link mechanism 25 has a rotating plate 26, and the rotating plate 26 is rotatably supported by the fourth pivot shaft 17 around the fourth pivot shaft 17.
An engaging bar 27 is provided on the rotating plate 26 so as to project therefrom.

Reference numeral 29 is a link body, and this link body 29
The rear end is pivotally supported on the engagement bar 27. Further, a long hole 30 which is long in the front and rear direction is formed at the front end of the link main body 29, and the long hole 30 is fitted in an engaging shaft 31 protruding from the bracket 10 so as to be slidable back and forth.

The hook 16 is formed with an arc-shaped elongated hole 34 centered on the fourth pivot 17 and the elongated hole 34 is formed.
An engaging piece 35 protruding from the rotating plate 26 is fitted in the. The elongated hole 34 and the engagement piece 35 may be omitted.

As shown by an arrow E in FIG. 1, a second spring 36 for urging the rotating plate 26 to rotate about the fourth pivot 17 is provided, and rotation by the second spring 36 is provided. By the rotation of the plate 26, the engagement bar 27 rotated accordingly is elastically brought into contact with the hook 16 as shown in FIG. Along with this, as shown by the solid line in FIGS. 2 and 3, the rear end of the elongated hole 30 elastically abuts on the engagement shaft 31, and further, as shown in FIG. It is elastically in contact with one end of 34.

Then, as described above, the sheet 1 is shown in FIG.
2 and the state shown by the solid line in FIG. 3 from the state shown by the solid line in FIG. 3 to the state shown by the alternate long and short dash line, the relative rotation of the seat cushion 5 and the bracket 10 around the third pivot 12 is shown. Along with the movement, the engagement shaft 31 in the elongated hole 30 reaches the rear end from the front end of the elongated hole 30, as indicated by the alternate long and short dash line in FIG. Further, in this case, since the front and rear relative movement of the link body 29 with respect to the seat cushion 5 hardly occurs, the hook 16 with respect to the seat cushion 5 does not move.
The relative rotational position of is maintained as shown by the solid line in FIG.

From the above state, the seat 1 is further rotated forward so that the front portion 3 of the passenger compartment floor 3 is indicated by the chain double-dashed line in FIG.
When it is stored on a, the bracket 10 pivots rearward relative to the seat cushion 5 around the third pivot shaft 12, and the engagement shaft 31 has the elongated hole 30 as shown by the chain double-dashed line in FIG.
The rear end is pushed backward, and as a result, the engaging bar 27 pushes the hook 16 backward, as shown by the chain double-dashed line in FIG. 1, and this hook 16 is rotated to the inside of the seat cushion 5, The hook 16 is stored inside the seat cushion 5.

On the rear right side of the seat frame 6, another hook of the same shape and size as the hook 16 and another striker of the same shape and size as the striker 19 are provided, and the hook is the fourth hook. It is pivotally supported coaxially with the pivot 17 so as to be rotatable back and forth.

The other hook is also biased by a spring so as to engage with the other striker.

When the other hook is disengaged from the other striker and the seat 1 is stored on the front portion 3a of the passenger compartment floor 3 as described above, the other hook is attached to the upper surface of the front portion 3a. 1, and is rotated toward the inner side of the seat cushion 5 in the same manner as indicated by the two-dot chain line in FIG.

[0035]

According to the present invention, when the seat is used, a hook is provided which elastically engages the seat cushion of the seat with the floor side of the passenger compartment by being biased by the first spring. When the seat cushion is rotated forward when the seat cushion is provided with a link mechanism for storing the hook inside the seat cushion, as described above, the hook is located on the floor side of the passenger compartment. On the other hand, when the first spring is elastically engaged with the first spring, the first spring does not act on the link mechanism. There is a risk of rattling when released.

However, the link mechanism is elastically joined to the hook by the second spring, so that the link mechanism is prevented from rattling.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a partially enlarged operation of FIG.

FIG. 2 is an overall side view.

FIG. 3 is an explanatory view of a partially enlarged operation of FIG.

FIG. 4 is a sectional view taken along the line 4-4 of FIG.

FIG. 5 is an exploded perspective view.

[Explanation of symbols]

 1 Seat 2 Car Room 3 Car Room Floor 5 Seat Cushion 7 Seat Back 10 Bracket 15 Lock Device 16 Hook 19 Striker 20 First Spring 25 Link Mechanism 26 Rotating Plate 29 Link Body 30 Long Hole 31 Engagement Shaft 36 Second Spring

Claims (1)

[Claims] 1. A front portion of the above-mentioned seat cushion is pivotally supported on a bracket projecting to the floor side of the passenger compartment so that the rear portion of the seat cushion can be rotated back and forth, and a hook is rotatable back and forth on the rear portion of the same seat cushion. A first spring for pivotally supporting the hook in one direction is provided, and when the seat cushion is rotated rearward, the hook is attached to the striker attached to the vehicle body floor side by the first spring. When the seat cushion is engaged with the seat cushion so that the seat cushion is locked to the floor side of the vehicle body by providing a link mechanism that connects the bracket and the hook, and the seat cushion is rotated forward, A lock device for an automobile seat, wherein the hook is rotated to a seat cushion side via the link mechanism. The elastically joined to serial hook 2
A vehicle seat locking device with a spring.