JPH0248252Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a sliding and rotating mechanism for a seat installed in a vehicle such as an automobile.

[Conventional technology]

2. Description of the Related Art Conventionally, seats installed in vehicles such as automobiles have been proposed that can be slid back and forth and rotated from a forward-facing position to a backward-facing position.

[Problem that the invention attempts to solve]

However, with conventional sliding and rotatable seats, it is possible to rotate even when the seat is at the front or rear end of the sliding range. There is a risk that the seat will collide with an object, causing damage to the seat itself or surrounding objects.

[Means for solving problems]

The present invention, as a means to solve the above-mentioned conventional problems, includes an upper frame 2 rotatably mounted on the lower frame 1, a lower sliding rail 31 laid on the upper frame 2, and an upper sliding rail 31 on the lower sliding rail 31. In the sliding rotation mechanism of the seat 4 to which the sliding frame 32 is slidably attached, the locking holes 16, 1 that can overlap the lower frame 1 and the upper frame 2 are provided.
7, 23 are provided, and the upper frame 2 is provided with the locking holes 16, 1.
An engaging claw 26 that engages with the seats 7 and 23 is rotatably attached, and a contact plate 28 is held out toward the engaging claw 26 with the plate 28 facing upward, while a contact plate 28 is inserted from the bottom surface of the seat 4 into contact with the corresponding plate 28. A blocking piece 42 that prevents rotation of the mating claw 26 is provided, and a notch 42A is provided at a predetermined position of the blocking piece 42, through which the contact plate 28 of the engaging claw 26 passes, so that even if the seat 4 rotates, it will not interfere with surrounding objects. When sliding to a position where there is no interference, the contact plate 28 of the engaging claw 26 touches the blocking piece 42.
It is set so that it can pass through the notch 42A.

[Operation] The operation of the present invention based on the above configuration is as follows.

When the seat is facing forward or backward, the locking holes in the lower frame and the locking holes in the upper frame overlap, and the locking claws are inserted through the two overlapping locking holes to engage and rotate the seat. prevent. For example, when the seat is located at the front end or the rear end of the sliding range and rotating the seat interferes with surrounding objects, the contact plate of the engagement claw comes into contact with the blocking piece and the rotation of the engagement claw is prevented. The engaging pawl cannot be removed from the two overlapping locking holes. When the seat is slid to a position where it does not interfere with surrounding objects even when the seat rotates, the contact plate of the engaging claw is located in the notch of the blocking piece, and the engaging claw becomes rotatable, allowing the two overlapping locking holes to open. The engaging pawl can be disengaged from the seat, and the seat can now be rotated.

[Effect of idea]

Therefore, in the present invention, the seat can only be rotated in the center of the sliding range, and cannot be rotated at the front or rear end positions, resulting in collisions with the front or rear seats, or the bulkhead, etc. This will definitely be prevented.
In the present invention, since the rotating mechanism is provided on the lower side and the sliding mechanism is provided on the upper side, a blocking piece is extended from the underside of the seat, and the engaging claw attached to the upper frame of the rotating mechanism is actuated by the blocking piece. can be prevented,
In this way, the blocking piece and the engaging pawl move together with the rotation of the seat, so the relative position of the blocking piece and the engaging pawl remains unchanged no matter what rotation state the seat is in. The structure of the mechanism for blocking the operation of the engaging claw of the mechanism becomes extremely simple.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 4. Reference numeral 1 denotes a lower frame, in which a raised part 11 is formed in the central part, and a hole is formed in the central part of the raised part 11. 12 is formed, and a flange 1 is formed on the periphery of the hole 12.
3 is fixed by a rivet 14, and the raised part 11
A fitting groove 15 is formed by the upper surface and the lower surface of the flange 13. Reference numeral 2 denotes an upper frame, in which a concave portion 21 is formed in the center, and a flange portion 2 is formed on the periphery of the concave portion 21.
2 is formed, and the flange 22 is inserted into the fitting groove 15 of the lower frame 1.
The upper frame 2 is rotatably attached to the lower frame 1 by being slidably fitted to the lower frame 1. Raised portion 1 of bottom frame 1
1 A forward locking hole 1 passing through the top surface and the flange 13
6 and a rear locking hole 17 are provided in the flange 22 of the upper frame 2.
A locking hole 23 is provided which can be overlapped. Furthermore, a rotating shaft 25 having a handle 25A formed at its front end is rotatably supported on a bearing 24 on the upper surface of the upper frame 2, and a locking pawl 26 is extended from the root end of the rotating shaft 25 to engage the engagement. The claw 26 is attached to a spring 27 in a direction in which the locking hole 16 or 17 of the lower frame 1 and the locking hole 23 of the upper frame 2 are passed through in an overlapping state.
is energized by. Further, a contact plate 28 is extended upward from the root end of the engagement claw 26. A lower sliding rail 31 is further laid on both edges of the upper surface of the upper frame 2, and an upper sliding frame 32 is installed on the lower sliding rail 31.
is fitted in a slidable manner, and the seat 4 is installed on the upper sliding frame 32 via a frame 41. A locking hole 33 is provided passing through the upper sliding frame 32 and the lower sliding rail 31, and an engaging claw 34 is engaged with the locking hole 33. bar 35
A handle 35A is formed at the tip of the operation rod 35, a pivot 36 is connected to one side edge of the frame 41 of the seat 4 at the center, and a spring 37 is connected to the handle 35A.
urges the engaging claw 34 in the direction of penetrating into the locking hole 33. Further, a blocking piece 42 is extended from the lower surface of the frame 41 of the seat 4, and a notch 42A is provided in the center of the blocking piece 42.

In the above configuration, when the seat 4 is in the forward facing state, the forward locking holes 16 of the lower frame 1 and the locking holes 23 of the upper frame 2 overlap, and the engaging claws 26 engage with the overlapping locking holes 16 in this way. The seat 4 is fixed forward by penetratingly engaging the stop hole 23. In this state, the handle 35A
When the engaging claw 34 is released from the locking hole 33 of the lower sliding rail 31 and the upper sliding frame 32 by pushing with the operating rod 35, the upper sliding frame 32 slides against the lower sliding rail 31. The seat 4 becomes movable and the seat 4 slides. For example, if the seat 4 is located at the front and rear ends of the sliding range and the rotation of the seat 4 interferes with surrounding objects, the abutment plate 28 of the engaging claw 26 moves against the blocking piece 4 as shown in FIG. At this time, the engaging claw 26 is prevented from rotating in the direction in which it is removed from the locking holes 16 and 23. In this way, the seat 4 is fixed in the forward direction and cannot rotate. Next, when the seat 4 is positioned, for example, in the center of the sliding range so that it does not interfere with surrounding objects even if the seat 4 rotates, the abutment plate 28 of the engaging claw 26 moves into the blocking piece as shown in FIG. When the notch 42A of 42 comes to the position, the blocking piece 42
2A, and the engaging claw 26 can now rotate the rotating shaft 25 via the handle 25A, and thus the engaging claw 26 rotates and closes the overlapping forward locking holes 16. , 23, the seat 4 becomes rotatable. When the seat 4 is turned rearward, the rearward locking hole 17 and the locking hole 23 overlap, and in this state, the engaging claw 26 is inserted into the rearward locking hole 1.
7, 23, the seat 4 is fixed rearward. At the front and rear end positions of the sliding range, it is no longer possible to rotate it forward.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a front sectional view, Figure 2 is an exploded perspective view, and Figure 3 is a contact plate at the front end position of the seat sliding range. FIG. 4 is an explanatory diagram of the relationship between the contact plate and the blocking piece at the center position of the seat sliding range. In the figure, 1... lower frame, 15... fitting groove, 16...
Front locking hole, 17...Backward locking hole, 2...Upper frame,
22... Flange portion, 23... Locking hole, 26... Engaging claw, 28... Backing plate, 31... Lower sliding rail, 3
2... Upper sliding frame, 4... Seat, 42... Blocking piece, 42A... Notch.

Claims (1)

[Scope of utility model registration request] In a sliding rotation mechanism for a seat, an upper frame is rotatably mounted on a lower frame, a lower sliding rail is laid on the upper frame, and an upper sliding frame is slidably mounted on the lower sliding rail, A locking hole that can be overlapped is provided in the lower frame and the upper frame, and an engaging claw that engages with the locking hole is rotatably attached to the upper frame. A blocking piece is provided from the underside of the seat to abut against the corresponding plate and prevent rotation of the engaging claw, and a notch is provided at a predetermined position of the blocking piece for the abutting plate of the engaging claw to pass through, A sliding rotation of a seat, characterized in that when the seat rotates and slides to a position where it does not interfere with surrounding objects, the contact plate of the engaging claw can pass through the notch of the blocking piece. mechanism.