JPH0593967U - Turning seat lock release mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] In a turning seat whose front and rear positions can be adjusted by a slide rail, to prevent the seat from coming into contact with the wall surface of the vehicle body during turning. [Constitution] Release hook (60) provided on the rotating body (2)
In addition, the lock-off lever (61) provided on the seat cushion (SC) side is arranged so as to be engaged only when the front and rear positions of the seat cushion (SC) are constant.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is an unlocking mechanism for a turning seat (seat) for an automobile, which can change the direction (turning) forward and backward, more specifically, a rotating body and a seat cushion rotatably mounted on a support base on the floor of the vehicle. The present invention relates to an unlocking mechanism in a locking device that prevents the seat from rotating in a turning seat having a slide rail for adjusting the front-rear position of the seat.

[0002]

[Prior Art]

 There is disclosed a turning seat in which a rotating body is rotatably provided on a support stand installed on the vehicle floor side, a slide rail for adjusting the front / rear position of the seat is fixed to the rotating body, and the seat is attached to the slide rail. This is because the slide rail is installed on the seat side, so the operation lever for unlocking the slide rail is at a higher position compared to the slide rail installed between the vehicle floor and the support base. There is an advantage that it is easy to do.

[0003]

[Problems to be solved by the device]

 However, in the case where the slide rail is arranged between the seat and the rotating body in this way, when the seat is rotated to change the direction of the seat, the seat hits the wall surface of the vehicle body and the turning operation is not performed. It may be difficult or the seat may be damaged. This is because the seat is rotated with the slide rail moving the seat forward or backward with respect to the predetermined position. Therefore, the present invention aims to eliminate such defects of the conventional products by simplifying the structure.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the unlocking mechanism for the turning sheet according to the present invention includes a release hook for releasing the locked state of the rotating body with respect to the support base by pushing and pulling the rotating body, and an engaging mechanism for the release hook. The lock-off levers are attached to the left and right sides of the seat cushion.

[0005]

[Action]

 The lock-off lever engages with the release hook only when the front and rear positions of the seat cushion are constant. The fixed position of the seat cushion is the position where the seat does not contact the wall surface of the vehicle body when the seat is rotated.When the seat cushion is in a fixed position, the lock-off lever engages with the release hook to lock the seat. Is removed and the sheet can be rotated.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a turning seat (second seat of a wagon type automobile) (S) having a lock release mechanism according to the present invention. In the figure, (1) is a support base fixed to the vehicle floor, and (2) is a support base ( Rotating bodies attached to 1) so as to rotate in the front-back direction by 180 degrees, (3) and (3) are slide rails fixed to the left and right sides of the rotating body (2). The seat cushion (SC) (seat) of the seat is fixed to 3). Therefore, the seat (S) can be moved forward and backward by the slide rails (3) and (3), and can be turned forward and backward by rotating the turntable (2). .. A lock-off lever (61) for releasing the locked state of the rotating body (2) by the lock mechanism (5) is provided on the left and right sides of the seat cushion (SC). In FIG. 1, (SB) in the drawing is a seat back (backrest part) that is tiltably attached to a seat cushion (SC) by a reclining device (not shown), and (11), (12) and (13) are supported. The components constituting the table (1), and (34) denote lock release levers of the slide rail (3), respectively.

FIG. 2 shows the rotating body (2) and the support base (1) before the seat (S) and the slide rails (3) and (3) are assembled, and FIG. 3 shows the slide rail (3). The state before (3), the rotating body (2), and the support stand (1) is assembled.

The support base (1) is provided with left and right side plates (11) and (12) fixed to the vehicle floor in an upright state, and a connecting frame (made of pipe) installed between the side plates (11) and (12). 13) and (14) and a supporting plate (15) fixed by welding to the center of the connecting frames (13) and (14). In the figure, (11a) and (12a) are lock holes (58a) provided in the side plates (11) and (12) ... Stands for forming, and (11b) and (12b) are supporting parts of the rotating body (2). A step is shown. The rotating body (2) is welded to the center of the pipe frame body (21) that is a quadrilaterally bent pipe body (21) that is substantially the same as the planar shape of the support base (1), and the rotating plate (2). 22) (22), a mounting plate (23) is installed in the center of the rotary plates (22) (22), and a release link that constitutes a lock release mechanism is provided below the mounting plate (23). (54) is rotatably pivoted by a pin (56). The slide rails (3), (3) are a lower rail (31) that is fastened to the bracket (57) of the rotating body (2) and an upper that is slidably fitted in the lower rail (31) in the front-rear direction. A rail (32) and a frame (not shown) of a seat cushion (SC) is attached to each upper rail (32) (32) via a bracket (33), and a slide rail (3) is attached. The lock-off lever (61) is provided on a bracket (33) integrated with the upper rail (31) of FIG.

The rotating body (2) has four headed pins (4) screwed downward to four nuts (34) ... Welded to the rotating plates (22) (22) of the rotating body (2). By slidably engaging the head portion (41) of ... With the locking portion (15a) formed of the hole edge of the through hole (16) provided in the support plate (15) of the support base (1). , Mounted so as not to separate from the support base (1). Further, the rotating body (2) is provided with four taper rolls (35) ... Rolling the support plate (15) of the support base (1).

A lock mechanism (5) for locking the rotating state of the rotating body (2) is provided on the rotating body (2) and is connected to the release link (54) by wires (55), respectively. It is composed of pins (50) (51) (52) (53) and lock holes (58a) (58b) (58c) (58d) provided on the support base (1) and into which lock pins (50) are inserted. Each of the lock pins (50) is pierced in the pushing and pulling direction of the wire (55) by the brackets (57) welded to the four corners of the frame (2), and is supported by the bracket (57). The lock plate (59) welded to the outside is urged outward by a spring force from a through hole of the lock plate (59).

As shown in FIG. 3, the lock holes (58a) have a rear lock hole (58a) higher than a lock hole (58b) provided on the front side of one side plate (11). To the other side, and the lock hole (58c) provided on the rear side of the lock hole (58d) provided on the front side of the side plate (12) to the other side is at a low position and a diagonal position. The holes (58a) and (58d) and the lock holes (58b) and (58c) are opened in the side plates (11) and (12) at the same height and the same inner diameter. Therefore, the above-mentioned lock pins (51) and (52) are at such heights that they can be inserted into the lock holes (58a) (58d), and the lock pins (50) (53) are located at the lock holes (58b) ( 58c) are penetrated by the brackets (57) ..

On the release link (54), release hooks (60) (60) are provided by wires (62) (62) on the upper surfaces of the left and right side portions (21a) (21b) of the frame body (21) substantially at the center. It is slidably mounted by pins (63) and (63). In the figure, (60a) shows a hook-shaped hook portion provided at the tip of the release hook (60), and (60b) and (60b) show elongated guide holes for inserting the pins (63). The lock-off lever (61) is engaged with the release hooks (60) (60) only when the front-rear position of the seat (S) is in a fixed position.

4 and 5 show a state in which the lock state of the rotating body (2) is released when the lock-off lever (61) is operated. In this state, the front and rear positions of the seat (S) are in a predetermined position, that is, when the seat (S) is rotated for turning, the seat (S) contacts the inner wall surface of the vehicle body, or The lock-off lever (61) engages with the release hook (60) when the end is in the position where it does not hit, and the release hook (60) is pulled by the rotation operation of this lock-off lever (61). Then, the locked state of the rotating body (2) by the lock mechanism (5) is released.

Therefore, when the seat (S) is not at the predetermined front and rear position, the front and rear positions of the seat (S) are adjusted to the predetermined front and rear position by the slide rails (3) and (3). Then, when the seat (S) is not in the predetermined front-back position, the lock-off lever (61) is moved to the seat (S) side in a positional relationship in which the lock-off lever (61) does not engage the release hook (60). It is arranged. The lock-off lever (61) is rotatably pivoted by a pin (65) to a mounting piece (64) provided on a bracket (33) of the seat cushion (SC).

FIG. 6 is an explanatory view for explaining the lock mechanism (5) and the lock-off mechanism, in which each lock pin (50) (51) (52) (53) is attached to each wire on the release link (54). (55) ..., and release hooks (60) (60) are connected to the release link (54) by wires (62) (62). When the release hooks (60) (60) are pulled, (62) (62) causes the release link (54) to rotate as shown by the chain line, and the lock pins (50) ... Withdraw from the lock holes (58a). After unlocking, the release link (54) returns to its original state (solid line in FIG. 6) by the elastic force of the spring provided on each lock pin (50), and each lock pin (50) is urged outward in a protruding manner. To be done.

Then, as described above, the release hook (60) provided on the rotating body (2) is engaged with the lock-off lever (61) provided on the seat (S) whose movement is adjustable in the front-rear direction, When the lock-off lever (61) is rotated against the elasticity of the spring (66), the release hook (60) is pulled to release the locked state, but the lock-off lever ( 61), that is, when the seat (S) is not in place, it does not engage the release hook (60).

FIG. 7 shows an example of the lock-off lever (61). (61a) is an engaging portion that engages with the hook-shaped hook portion (60a) of the release hook (60), and (61b) is an operating portion. Show each. The release hook (60) of the embodiment has a structure in which it is unlocked by pulling it, but it is optional to use a release hook (60) that is unlocked by pushing.

[0018]

[Effect of the device]

 According to the present invention, in the turning seat in which the seat is movably mounted in the front-rear direction via the slide rail on the rotating body rotatably installed on the support base, when the front-back position of the seat cushion is at a fixed position. Only, the locked state of the rotating body with respect to the support base is released, and the seat can be turned. Therefore, since the seat does not hit or contact the wall surface of the vehicle body during turning of the seat, damage to the seat and the wall surface of the vehicle body can be prevented, and the turning operation can be performed accurately. Moreover, since the lock-off lever needs only to be arranged at a fixed position with respect to the release hook, it is possible to provide a lock release mechanism having a simple structure and free from the risk of failure.

[Brief description of drawings]

FIG. 1 is a perspective view of a turning sheet having a lock release mechanism of the present invention.

FIG. 2 is a plan view showing the mechanism of the present invention.

FIG. 3 is an exploded perspective view showing a mechanism of the present invention.

FIG. 4 is a sectional view showing a mechanism of the present invention.

FIG. 5 is a side view showing the mechanism of the present invention.

FIG. 6 is an explanatory view showing the mechanism of the present invention.

FIG. 7 is a perspective view showing an example of a lock-off lever.

[Explanation of symbols]

 1 Support base 2 Rotating body 3, 3 Slide rail SC Seat cushion 60 Release hook 61 Lock-off lever

Claims (1)

[Scope of utility model registration request] 1. A support base fixed to a vehicle floor, a rotary body rotatably installed on the support base by rollers and locked by a lock mechanism, and a front and rear direction movable on the rotary body via slide rails. In a turning seat comprising a seat cushion having a lock releasing mechanism that is attached so that the lock state is locked by the lock mechanism, the lock releasing mechanism is provided on a rotating body to push and pull to lock the lock state of the lock mechanism. It consists of a release hook that is released and a lock-off lever that engages with this release hook.The lock-off lever is attached to the left and right side portions of the seat cushion, and when the front and rear positions of the seat cushion move to a fixed position, Locking mechanism for turning seats, where the lock-off lever is engaged with the release hook.