JPS63109815A - Hinge structure of seat - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is inspired by the hinge structure of a seat. The present invention relates to a seat hinge structure that can be suitably applied to a rear seat of a bread-type vehicle φhm that can be switched between a flat state and a fully flat state.

(Prior Art) Conventionally, in the rear seats of pan-type automobiles, the seat back is folded forward from its upright position, and the folded position overlapping the seat bottom is folded out, and vice versa, by folded backward. For example, the one that extends completely flat to the rear of the seat bottom is
Various methods are known, as disclosed in Japanese Patent No. 0-93527 f11.

In the hinge structure of the seat back, the pivot axis when tilting forward and the pivot axis when tilting backward must be different, and the lock can be released by operating a separate control lever for each. and is withered so that it can be tilted forward or backward.

The 51-body example will be explained with reference to FIG. is pivotally supported, and a pivot shaft 2 is attached to this intermediate rotating member 23.
4 to support member 25 of Jidopa 7 (not shown)
is supported.

A first lock pawl 26 rotatable about the pivot shaft 24 is attached to the intermediate rotating member 23, and its engaging portion 26a is attached to the engaging portion 6 formed on the fixing member 21. 27
, and a first fi operating lever 2f3b extends upward from the first lock claw 26. Further, the support member 25 has a second rotatable member that is rotatable around the pivot pin 25a.
The lock claw 28 is attached and the engaging portion 28a
Engagement recess 2 formed in intermediate rotating part village 23
9, and an f52 operating lever 28b extends upward from the second lock claw 28. and,
When the first operation lever 2Gb is rotated backward against the biasing force of the spring 26C, the engagement of the first lock pawl 26 is released and the intermediate rotation member 23 is moved along with the support member 25 to the pivot shaft 22.
When the seat back is fully flat and connected to the seat bottom, f52'Pj and the operating lever 28b are rotated forward against the biasing force of the spring 28C, the second lock pawl 28 is rotated backward. The engagement is released and the support member 25
rotates forward about the pivot shaft 24, and the seat back is placed over the seat bottom.

(Problem to be solved by the invention) By the way, in the above configuration, the seat back is tilted backward.
operation lever 261] and the second FA operation lever 2 that is tilted forward.
Since the lever 8b is provided separately, it is necessary to select which operating lever should be operated at the time of operation, which makes the operation complicated, and there is a problem that the ring ear space for each operating lever becomes small. Ta. Furthermore, when the seat back is tilted forward, the first lever 26I) protrudes in an upright position, which is unsightly and potentially dangerous.

The present invention addresses the above-mentioned conventional problems and provides a seat hinge structure that allows the seat back to be tilted forward or backward around different pivot wheels by operating a single operating lever. purpose.

(Means for Solving the Problems) In order to achieve the above object, the present invention pivots an intermediate rotating member to a fixed member coupled to a seat bottom, and also provides a seat for the intermediate rotating member. The supporting member of the bag is pivotally supported, and the intermediate rotating member and the supporting member are respectively locked in an upright position and rotated in opposite directions between the fixed member and the intermediate rotating member and between the intermediate rotating member and the supporting member. (1) An operating lever rotatable around the pivot axis of the supporting member is provided; The present invention is characterized in that an engaging portion is provided for engaging the first and second locking claws with each other.

(Function) Since the present invention has the above configuration, when the operating lever is repeatedly rotated forward, for example, the second lock pawl rotates, and the second lock pawl between the rotary member and the support member rotates. When the lock is released, the support member rotates forward together with the seat back, and the seat back overlaps the seat bottom.When the control lever is rotated backwards, the first lock pawl rotates. , the lock by the lock claw of fjSl between the fixed member and the intermediate rotating member was released, the intermediate rotating member rotated rearward together with the support member and the seat back, and the seat back was connected to the rear of the seat bottom. It will be in a fully flat state. Therefore, by operating the operating lever, the seat back can be tilted in any direction around different pivot axes.Furthermore, the operating lever rotates with the supporting member no matter which direction the seat back is operated, and the seat back is in the upright position. There is no such thing as remaining.

(Example) Hereinafter, an example of the present invention will be described with reference to FIGS.

In FIGS. 1 and 2, reference numeral 1 designates a fixed member that is connected to a seat bottom (not shown) and fixedly supported by the vehicle body, and an intermediate rotating member 3 rotates via an upper pivot shaft 2. It is freely supported. Further, a lower end portion of a support member 5 of a seat back (not shown) is pivotally supported on the upper part of the intermediate rotating member 3 via an upper pivot shaft 4. A first lock pawl 6 rotatable around the upper pivot shaft 4 is attached to the intermediate rotating member 3, and an engaging portion 7 formed on the fixing member 1 is attached to the engaging portion Ga1JJ. is engaged with
The lock pawl 6 of this ml is always moved toward the locked state (t51) by the spring 8. Also, the support member 5
A lock pawl 10 of f:tS2 is attached to the lock pawl 10 rotatably around the pivot pin 9, and its retaining portion 10a is engaged with the engagement recess 11 formed in the intermediate rotation member 3, and This second lock pawl 10 is constantly urged toward the locked state by a spring 12. The first lock pawl 6 and the second lock pawl 10 are configured to be unlocked by rotating in opposite directions, and in the illustrated example, the first lock pawl 6 is clock) When rotated in the j direction, the lock is released and the second lock claw 1
0 is designed to be unlocked when rotated counterclockwise. A lower end portion of the operating lever 13 is rotatably supported by an upper pivot shaft 4 that pivotally supports the intermediate rotation section 3 and the support member 5. An engaging piece protruding from the first locking pawl 6 is engaged with this operation lever 13, and when this operating lever 13 is rotated backwards in a clockwise direction, the first lock is engaged. The pawl 6 is also rotated clockwise, and conversely, when the pawl 6 is rotated counterclockwise in any direction, the second lock pawl 10 is similarly rotated counterclockwise. Further, a cover 16 is fixed to the support member 5 as shown by the imaginary line in the first part 1, and a notch 17 formed in the cover 16 allows the support member 5 of the operation lever 13 or the seat back to be fixed to the cover 16. The relative amount rjJJffl is regulated, and when the operating lever 13 is rotated for 9 hours, the support member 5 is rotated as it is after releasing the lock in the first stroke! l! It is configured to allow IJ operation.

In the above configuration, when the operating lever 13 is rotated forward in the counterclockwise direction as shown by the arrow in Figure Ws1, the opening/link pawl 10 of ptS2 is moved through the engagement pin 15.
is rotated counterclockwise against the biasing force of the spring 12, the intermediate rotation member 3 is disengaged from the engagement recess 11, and the support member 5 is unlocked. Furthermore, the operating lever 13
When rotated, the operating lever 13 engages with the cover 16 fixed to the support member 5, and the support member 5 is rotated.
As shown in FIG.
It rotates around the seat and becomes folded, one layer above the seat bottom. During this operation, the engaging piece 1 of the first locking claw 6
4 does not engage with the operating lever 13, the first lock claw 〇 remains engaged with the engagement recess 7 of the fixed member 1, and the intermediate rotating member 3 remains locked and remains in the upright state. When the lever 13 is rotated in the direction of arrow C in Fig. fi3, the support member 5 and seat back 18 are
rotates upward, and in the upright state, the lock pawl 152 engages and locks with the four retaining parts 11 of the intermediate rotating member 3 by the biasing force of the spring 12, and the seat back 18 is locked in the upright state again. be done.

Next, turn the operating lever 13 clockwise toward the rear as indicated by arrow B in FIG. When the h operation is performed, the working lever 13 moves through the retaining piece 14 formed on the first locking pawl 6. The lock claw 6 of 51 is rotated clockwise to disengage from the engagement recess g7 formed in the fixed member 1, and the intermediate rotating member 3 is unlocked. Further, when the operating lever 13 is rotated, the operating lever 13 engages with the cover 16, and the support member 5 is rotated together with the intermediate rotating member 3, so that the seat back 18 is rotated at the lower pivot point, as shown in FIG. It rotates around the support shaft 2 and reaches a full 7-rat state where it is connected to the seat bottom 19. Next, turn the operation lever 13 in the direction of arrow D in Figure 4! I! When IJ is operated, seat back 1
8 rotates upward together with the support member 5 and the intermediate rotating member 3, and in the upright state, the lock pawl 6 of ffN is engaged and locked in the engagement recess 7 of the fixed member 1 by the biasing force of the spring 8.

The present invention is not limited to the above-mentioned embodiments, and, for example, the shapes and pivot positions of the first and second locking claws, the shape and arrangement position of the engaging portion, etc. can be arbitrarily designed within the range that allows the above-mentioned operation to be achieved. Can be changed.

(Effects of the Invention) According to the hinge structure of the sheet of the present invention, as described above,
When the operating lever is rotated in either direction, the first or second lock pawl rotates, locking between the fixed member and the intermediate rotating member or between the intermediate rotating member and the support member. Since the intermediate rotating member rotates rearward together with the support member and seat back, the seat back is connected to the rear of the seat bottom in a fully flat state, or the support member rotates together with the seat back in any direction and the seat is fully flat. The back can be placed over the seat bottom. Therefore, the seatback can be tilted forward or backward by operating one operating lever, simplifying the operating method, and since there is only one operating lever, the space for operating the lever is also expanded compared to conventional methods. , easy to operate. Furthermore, the operating lever rotates together with the support member when operating in any direction, and does not remain in an upright position and become a hindrance, providing great effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a perspective view of the same angle, and FIGS. 3 and 4 are side views showing the same operating state.
FIG. 5 is a perspective view of a conventional example. 1...Fixed member 2...Lower pivot shaft 3...Intermediate rotating member 4... Upper pivot shaft 5... Support member 6... First lock claw 10... Second lock claw 13...・・・
...... Operation lever 14 ...... Engagement piece (retaining part) 15 ...
... Engagement Bin (Holding Department) Agent Patent Attorney Katsutaka Ishihara Figure 1 Figure 4

Claims (1)

[Claims] (1) The intermediate rotating member is pivoted to the fixed member coupled to the seat bottom, and the support member of the seat back is pivoted to the intermediate rotating member, and the support member of the seat back is pivoted to the fixed member and the intermediate rotating member. First and second locking claws are provided between the intermediate rotating member and the support member, each locking the intermediate rotating member and the supporting member in an upright position, and releasing each lock by rotating in opposite directions. An operating lever is interposed and rotatable around the pivot axis of the support member, and an engaging portion is provided for engaging the operating lever with the first and second locking claws, respectively. The seat hinge structure is characterized by: