JPS6313952Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a lock release device for a rotating seat, specifically, in a rotating seat having two backrests, the rotation locking mechanism is released by tilting one backrest forward. This invention relates to an unlocking device for a rotating seat.

For example, in a one-box type car that has front, middle, and rear seats arranged in three rows,
Since the rear seat is accessed through the entrance on the left side of the middle seat, it is relatively slow to enter and exit, making it difficult to enter and exit. In addition, the middle seat of such a car generally has a backrest that is double-sided.
The backrest on the left side can be folded forward to make it easier to get in and out of the rear seat. The drawback is that the access is not smooth enough and it is still difficult to get in and out.

In view of the above-mentioned conventional circumstances, the purpose of the present invention is to tilt forward one backrest portion near the access point to the rear seat, thereby releasing the rotation lock mechanism, thereby making it possible to easily rotate the seat. To provide a rotating seat unlocking device that allows easy access to and from the rear seat.

The present invention will be explained below with reference to illustrated embodiments.

The rotating seat to which the lock release device of the present invention is applied, shown in FIGS.
and a second backrest portion 3 are provided. A first base plate 4 is disposed between the first backrest portion 2 and the left side surface of the seat portion 1.
The lower end of a first arm 5 is attached to a rotation shaft (not shown) provided at the center of the base plate 4, and the upper end of this first arm 5 is integrally provided with the first backrest portion 2. . Similarly, a second base plate 6 is arranged between the second backrest part 3 and the right side of the seat part 1, and the lower end part is arranged to be rotatable about this rotation axis (not shown). A second arm 7 is provided, and an upper end portion of the second arm 7 is integrally attached to the backrest portion 3. 1st above
Reclining mechanisms (not shown) are provided on the sides of the base plate 4 and the second base plate 6, and are operated by the first operating lever 8 and the second operating lever 9.

The first backrest part 2 is for seating two people, the second backrest part 3 is for seating one person, and both backrest parts 2
A lock release activation unit 62 is disposed between and 3. The lock release activation unit 62 includes a lower end portion of a third arm 60 attached to the right end surface of the first backrest portion 2 and a lower end portion of a fourth arm 61 attached to the left side surface of the second backrest portion 3. are each connected. One end of a first release wire 63 and a second release wire 64 are connected to the lock release activation section 62, and the other ends of the release wires 63 and 64 are provided near both left and right ends of the seat section 1, respectively. The first and second lock portions 65 and 66 are connected to each other.

The lock portions 65 and 66 have a lock mechanism that locks the rotation of the seat portion 1.
As shown in FIG. 1b, when the second backrest part 3 is tilted forward, the lock is released and the seat part 1 can be rotated, as will be described later.

FIG. 2 shows the lock release starting section 6 shown in FIG.
2, the details of the first and second lock parts 65 and 66, and the details of the third and fourth arms 60 and 61.
The lower end is rotatably supported by a support shaft 69 on brackets 67 and 68 integrally attached to the seat 1, and the upper end of an elliptical wire lead-in member 70 is rotatably supported on the support shaft 69. Supported with free movement,
A cut-out 61a formed at the lower end of the fourth arm 61 comes into contact with the front end of the wire retracting member 70, and restricts rotation of the wire retracting member 70.
A pin 71 is fixed to the lower end of the wire lead-in member 70, and the release wires 63, 64 are connected to this pin 71.
One end of the is attached. Release wire 6
3 and 64 pass through the guide tubes 72 and 73, respectively, and the other ends are connected to brackets 75 and 7 provided on the first and second lock release members 74 and 77, respectively.
It is attached to 8. The first and second lock release members 74 and 77 are provided with support shafts 76 and 79, respectively.
Although the release wires 63 and 64 are rotated freely around the support shafts 76 and 79, they are biased clockwise and counterclockwise by means such as springs (not shown), respectively, and pull the release wires 63 and 64, respectively. It's on. A first lock piece 32 and a first lock member 38 are disposed on the side of the first lock release member 74,
A second lock piece 33 and a second lock member 37 are disposed near the second lock release member 77. These locking pieces 32, 33 and locking members 38, 37 are members for locking the rotation of the rotating seat, and the details thereof will be explained below with reference to FIG.

FIG. 3 is a diagram showing the internal mechanism of the rotary seat of the present invention shown in FIGS. It is integrally attached to the seat base plate 15. In the middle of the first base plate 4 is an inverted L-shaped first lock rod 1.
The left end portion of 0 passes through, and this end portion is in contact with the first arm 5. The lower end portion of the first lock rod 10, which is bent and extended downward, passes through an elongated guide hole 15a formed on the seat base plate 15. Similarly, the right end portion of the second lock rod 11 having an inverted L shape passes through the middle of the second base plate 6, and this end portion is in contact with the second arm 7. The lower end portion of the second lock rod 11, which is bent and extends downward, passes through a long guide hole 15b formed on the seat base plate 15. The first lock rod 1 extending downward
The lower end of the connecting lever 12 further passes through one end of the connecting lever 12 and stops close to a first plate 19 provided on the rear seat frame 18. On this first plate 19, as shown in detail in FIG.
A first reverse rotation prevention member 22 having an inverted L shape, a first guide member 23, and a first stopper 25 are provided. The connecting lever 12 is rotatably supported around a support shaft 45, and the other end has a connecting wire 1.
One end of 3 is attached. Connecting wire 13
is guided by the guide tube 14 and the second lock rod 1
It is attached to the bottom end of 1. Further, on the lower right corner of the seat frame 18, the first plate 1
A second plate 20 similar to 9 is disposed, and a second reverse rotation prevention member 27, a second guide member 28, and a second stopper 31 are disposed on this second plate 20. First and second rotation guide rails 3 are provided at the lower ends of the left and right sides of the seat base plate 15, respectively.
4 and 35 are arranged, and each rotation guide rail 3
Reference numerals 4 and 35 make the seat 1 rotatable around the rotation support shaft 46 of the seat 1 via the seat base plate 15. These rotating guide rails 34, 35
At the top of the
3 are arranged. The rotation lock pieces 32 and 33 are connected to first and second rotation lock pieces 32 and 33 attached to side plates 39 and 36 provided on both left and right sides of the seat frame 18, respectively.
The second locking members 38 and 37 are fitted to prevent the seat 1 from rotating. As shown in FIG. 2, for the first and second locking members 38 and 37,
First and second lock release members 74 and 77 are disposed adjacent to each other, and the support shafts 76 and 79 of the lock release members 74 and 77 are attached to the seat base plate 15, so that when the seat rotates, Seat board 15
It is designed to rotate with the

The lock release device for a swivel seat of the present invention is constructed as described above. Next, its operation will be explained.

As shown in FIG. 1a, when the backrests 2 and 3 are upright, the lock pieces 32 and 33 fixed to the seat base plate 15 are disposed on the seat frame 18 side. Each lock member 38, 37
are fitted to each other to prevent the seat from rotating.
Therefore, in this state, the seat cannot rotate.

Next, as shown in FIG. 1b, when the second backrest 3 for single-seat seating is tilted forward, the fourth arm 61 attached to the left side of the backrest 3 is also tilted forward. . Therefore, as the details are shown in FIG. 2, the wire retracting member 70 attached to the lower end of the fourth arm 61
The release wires 63 and 64, one end of which is attached to the pin 71, are pulled by being pushed by the cut and raised portion 61a of the arm 61. For this purpose, lock release members 74 and 77 attached to the other ends of release wires 63 and 64 are respectively
As shown by 0 and 81, the lock members 38 and 37 are rotated counterclockwise and clockwise about the support shafts 76 and 79 to push each lock member 38 and 37.
Hold it in the position shown by the two-dot chain line, and then remove the lock piece 3.
2 and 33. As a result, as shown in FIG.
6 can now be rotated as shown by arrow 21. That is, as shown in FIGS. 1a and 1b, when the backrest 3 provided on the left side and for seating one person is tilted forward, the rotation lock of the seat is released and the seat can be rotated. As mentioned above, when applying this to the middle seat of a one-box type car, when entering and exiting from the left side of the middle seat to the rear seat, simply fold the backrest of the middle seat forward and rotate the middle seat to enter and exit. The effect is that the space can be enlarged and that entry and exit can be made very smoothly. Note that the angle of rotation at this time does not need to be so large; for example, if the seat is rotated by about 8 degrees, getting in and out will be smooth.

FIG. 3 shows that the rotation lock of the seat is released when the second backrest 3 is folded forward in this way, but if the second backrest 3 is only folded forward, it will rotate only about 8 degrees and the seat will rotate only about 8 degrees. When both the first and second backrest parts 2 and 3 are tilted forward, they can be freely rotated, and their operation will be explained below.

First, as shown in FIG. 1b, the second backrest part 3
When the seat is moved forward, the seat rotation locking mechanism is released by the action of the release wires 63 and 64, as described above, and the seat becomes rotatable. Further, the second arm 7 shown in FIG. 3 tilts forward, and the second lock rod 11 tends to protrude outward due to the force of the spring 17. However, the connecting wire 1 is attached to the lower end of the second lock rod 11 extending downward.
3 is attached, and this connecting wire 13
One end is connected to the lower end of the first lock rod 10 via a connecting lever 12, and the left end of the first lock rod 10 is prevented from operating by the first arm 5. The second locking rod 11 is
After passing through the arm 6, it is prevented from going further outside. Therefore each locking rod 10 and 1
1 is in the same state as in Figure 3 and does not operate. When the seat part 1 is rotated in this state, the lower end of the first locking rod 10 moves in the direction shown by the arrow 24 on its rotation trajectory, and this lower end comes into contact with the first stopper 25 and stops. . Therefore, in the seat part 1, the lower end of the first lock rod 10 is connected to the first reverse rotation prevention member 2.
2 to the first stopper 25, but cannot rotate any further.

For example, when the rotating seat of the present invention is applied to the middle seat of a one-box type automobile that has front, middle, and rear seats arranged in three rows, this occurs when entering and leaving the rear seat from the left side of the middle seat. This is to make it easier to get in and out of the rear seat by rotating the middle seat slightly forward.If the above-mentioned predetermined angle is set to, for example, 8 degrees, just by tilting one backrest forward, the middle seat can be rotated slightly forward. The seat can be rotated by 8 degrees.

Next, a case will be described in which both backrest portions 2 and 3 are tilted forward at the same time. In this case, each arm 5 and 7 for each backrest portion 2 and 3 is tilted forward as shown in FIG. 5b.
The lower ends of the locking rods 10, 11 are removed from contact with the ends of the locking rods 10, 11, and the locking rods 10, 11 are held together by the force of the springs 16, 17, as shown in FIG. 5b. After penetrating, it protrudes outward.
For this purpose, the first locking rod 10 is connected to the spring 16.
As the coupling lever 12 attempts to move to the left due to the force, the connecting lever 12 attempts to rotate counterclockwise around the support shaft 45 as shown by the arrow 40, and at the same time, the second lock rod 11 also moves due to the force of the spring 17. This causes the connecting wire 13 to move to the right.
are pulled to the right, and since these forces are in the same direction, each locking rod 10, 11 can penetrate the base plates 4, 6 and protrude to the outside. Therefore, in this case, as shown in FIG. 5b, the lower end of the first locking rod 10 does not come into contact with the first stopper 25, but rotates the seat 1 from the direction shown by the arrow 41 about its center of rotation 46. It can be rotated clockwise as shown by arrow 21. In this case, as shown in more detail in FIG. 3, the lower end of the first lock rod 10 abuts the first guide member 23, and while being guided by this, does not abut the first stopper 25 and is moved toward the arrow 26. It rotates while moving in the direction of. In this way, the seat part 1 rotates clockwise, and the seat part 1
As shown in Figure a, when the seat is turned backward in the opposite direction, the first locking bar 10 moves onto the second plate 20 provided at the lower right of the seat frame 18, which also performs the same function as described above. It's summery. In this way, when the seat part 1 rotates clockwise and faces backward, the seat part base plate 1 as shown in FIG.
The first lock piece 32 provided on the left side of 5 is
It moves to the right side and engages with the locking member 37 provided on the right side of the seat frame 18, thereby stopping the rotation of the seat 1 and locking it. In this way, when the first and second backrest parts 2 and 3 are tilted forward at the same time, the first and second locking rods 10 and 1 are
1 pass through each of the base plates 4 and 6, and then protrude outward as shown in FIG. 1 can be rotated. In this case, each lock rod 10,
The left and right ends of 11 protrude as shown in FIG.
The seat 1 rotates. Therefore, during rotation, the backrest portions 2 and 3 that are tilted forward become an obstacle and prevent the user from sitting down, thereby preventing dangers and obstacles caused by this.

As explained above, according to the present invention, in a seat having a split type backrest, by tilting one backrest forward, the rotation lock of the seat is released, thereby making it possible to easily rotate the seat. Therefore, when this is applied to the middle seat of a one-box type automobile, it has the effect of making it extremely easy and smooth to enter and exit the rear seat.

[Brief explanation of the drawing]

Figures 1a and b are operational views of a rotating seat to which a lock release device is applied, each showing an embodiment of the present invention, Figure 2 is a partially enlarged perspective view of the lock release device shown in Figure 1, and Figure 3 is an exploded perspective view showing the internal mechanism of the rotating seat shown in FIG. 1, FIG. 4 is a partially enlarged plan view of the internal mechanism shown in FIG. 3, and FIGS. 5 a and b are parts of the internal mechanism shown in FIG. 3. FIG. 3 is a perspective view showing the operating mode. 1... Seat part, 2, 3... Backrest part, 4, 6...
... Base plate, 5, 7, 60, 61 ... Arm, 32, 33 ... Lock piece, 37, 38 ... Lock member, 63, 64 ... Release wire, 7
4,77...Lock release member.

Claims (1)

[Claims for Utility Model Registration] The first and second backrest parts 2, 3 separated into at least two parts are connected to the first to fourth arms 5, 60,
In the unlocking device for a rotary seat, which is a seat that can be rotatably supported and folded forward at 7 and 61, and can be rotated to change its direction, either of the third and fourth arms 60 and 61 adjacent to each other is provided with a lock release device. Attach one end of each of the release wires 63, 64 that are pulled simultaneously when one arm rotates, and attach the other ends of each of the release wires 63, 64 to the lock release members 74, 77. The release wires 63 and 6 are rotated by the rotation of the third and fourth arms 60 and 61.
4 to release the engagement between the lock pieces 32, 33 and the lock members 37, 38, and when each backrest portion 2, 3 is not in the forward-folded state, one end is attached to the first and second arms 5, 7. is each spring 1
When the backrest portions 2, 3 are in the forward tilted state, the first and second lock rods 10, 10, which are activated by releasing the contact of one end with the arms 5, 7, are prevented from operating. 11 is provided, and the other end side of one of the first and second lock rods 10, 11 extends downward through long holes 15a, 15b formed in the seat base plate 15 on the rotating side that forms the frame of the seat 1. A pair of left and right first and second guide members 23 and 28 are provided on the fixed side, adjacent to the rotation locus drawn when the seat is rotated, and whose other ends are in contact and guided, and which of the first and second arms 5 and 7 is provided. A coupling mechanism 12, 1 configured to prevent the operation of the locking rod 10 or 11 of the arm 5 or 7 that is tilted forward even if one of the arms 5 or 7 is tilted forward.
3 and 14 connect the first and second lock rods 10 and 11, and a pair of left and right first and second reverse rotation prevention members 22 and 27 are provided on the rotation locus of the fixed side, and furthermore, the first and second backrests are connected to each other. When one or both of the parts 2, 3 are not in the forward-folding state and the seat is to be rotated, the other end of one locking rod 10 or 11 is on the locus of movement and the first and second reverse rotation prevention members are An unlocking mechanism for a rotating seat, characterized in that a pair of first and second stoppers 25 and 31 are provided.