JPS58141939A - Seat revolving apparatus - Google Patents

Abstract

PURPOSE:To obtain a seat revolving apparatus having a simple structure and the superior strength by forming a revolution center hole on a seat frame and installing a rotary mechanism in the annular space on the peripheral edge. CONSTITUTION:A lower bracket 10 having a bottomed supporting hole 11 is fixed onto seat tracks 14 and 15 through attachment brackets 12 and 13. A revolution center hole 24 having the annular space 25 upwardly opened on the peripheral edge is formed on a seat frame 20. Said annular space 25 consists of an outside cylindrical part 26 and an inside cylidrical part 27, and said outside cylindrical part 26 is inserted into the supporting hole 11 on the lower bracket 10. A support lock bracket 30 consists of an annular wall 31 and an inside wall 32, and the inside cylindrical part 27 of the seat frame 20 is positioned in the annular space 33 between the both walls 31 and 32, and a bottom wall 34 is fixed in the supporting hole 11 on the lower bracket 10. A proper lock mechanism 40 is installed between the seat bracket 20 and the support lock bracket 30.

Description

[Detailed description of the invention] The present invention provides a vehicle seat rotation device IKvJ.

Conventionally, the front seats of passenger cars have generally been able to adjust their longitudinal position using a seat track and the angle of the seat back using a seat recliner. There is room for improvement. Improving the ease of getting in and out of a 4IK is of great significance for elderly people and people with disabilities.

The present invention takes into consideration both the awareness of such problems and the demand for weight reduction of vehicles, and aims to provide a seat rotating device that has a simple structure, does not cause an increase in weight, and is excellent in both strength and strength. In addition to drilling a rotational center hole in contact with the seat frame kN to which the seat is to be mounted, a ring-shaped hole with an illusion of an upper opening is created by the inner and outer cylindrical parts that are delayed around the rotational center hole. A hole is formed, and within this Rushu space,
(Lower bracket on the vehicle floor side)K Insert the annular wall of the integrated support lock bracket so that it can rotate freely and attach it to the seat frame. The weight seat is rotatable and is further provided with a locking mechanism for fixing or releasing the seat frame in its normal position.

The invention will now be described with reference to downstream illustrated embodiments.

The device of the present invention includes a lower bracket 10, a seat 71 norm y
The main components are a support lock bracket 30 and a lock mechanism 40 provided between the seat frame and the support lock bracket 30.

The lower bracket 10 has a bottomed support hole 11 formed by shallow drawing downward in the center of the mackerel, and a channel-shaped and straight attachment bracket 12 is provided in front and behind the support hole 11.
, 13 force [attached integrally by welding or other fixing means. The attachment brackets 12 and 13 have their respective ends connected to left and right seat tracks 14 and 15.
It is fixed to the end rails 14a and 15a,
The hot rails 14a and 15a are slidable on lower rails 141) and IF'bK fixed to the vehicle floor. Reference numeral 16 in FIG. 1 is an operating key (-) of a locking mechanism that locks and unlocks both rails.

The seat frame is to which a KW 3" seat is attached, and a reclining device 22 and a swing fulcrum plate 23 for the seat back frame 21 are provided on both sides of the seat frame (only in the closed figure 1). ).This seat frame 20 has a rotation center hole 24 bored therein, and an upper open annular space 25 is formed at the periphery of this rotation center hole 24. First, the outer cylindrical part 26 is connected to the lower part of the seat frame 2DK, and then the tip of this cylindrical part is folded upward inward to form the inner cylindrical part 27. The continuous cylindrical parts 26 and 27 form an annular space 25 with an open upper part.The cylindrical part 26 has a diameter that allows it to be rotatably inserted into the support hole 11 of the lower bracket 10. .

The support lock bracket 30 is made of a relatively flat bottomed cylindrical body formed by drawing process, and its periphery @
The annular shape 1131 is relatively rotatably inserted into the upper VMI-like space 25 from above, and the annular shape [11 out of 131
An inner l1111132 is formed which is connected to the l1111132. In the annular space 33 between the annular wall 31 and the inner @1132,
The inner cylindrical portion 27 of the seat frame is positioned so that the seat frame and the support lock bracket 30 are engaged with each other, and in this state, the bottom 134 is connected to the upper F lower bracket 1.
As a result of being fixed to the bottom @17 of the support hole 11 of 0 by welding or other fixing means, the seat frame 20120 can freely rotate with respect to the wobble bracket 10K. The annular shape 1131 has its lower end annular in order to prevent the seat frame 2 [) from lifting up! Face the bottom of FJJI2s. In addition, grease or other lubricants are applied to some of the rotating slides between the seat frame b21), the lower bracket 10, and the support lock bracket 30 to reduce rotational resistance. A large number of balls 35 may be inserted between the lower portions of the cylindrical portions 27 and 26 and the support hole bottom wall 17 of the lower bracket 10.

Next, the lock mechanism 40 will be modified. The outer and inner cylindrical parts 26 and 27 of the seat frame are provided with a pair of opening holes 41 and 42, respectively, at the same position in the radial direction.
is drilled in the ring 931 of the nick bracket 3, and when the seat frame is in the normal position WK rotation l, it is positioned on the axis of the upper two openings 41 and 42. A pair of lock holes 43 are bored. On the other hand, a locking member 44 having a pair of locking claws 44a that can enter between each pair of locking holes 41, 43, and 42 of the outer cylindrical portion 27 of the seat 71 is attached to the kite hole 4F of the support bracket 45. ) & h. This locking member 44 is compressed between the support holder fixed to the outer wall of the cylindrical portion 26; The spring 46 keeps the lock pawl 44 open at all times.
A is urged to enter the lock holes 41, 42, 43 -F. 47 This is an operation handle for retracting the locking member 44 against the urging force of the lever, and is rotatably supported on the lower surface of the seat frame portion by a support plate 48, and a right-angled bent portion 47a at the inner end thereof is locked. Member 44
The engagement hole 44a at the outer end is inserted into the IF. 471) is located at the end opposite to the right-angled bent portion 47a, and is approximately 9
This is an operating section that is bent at right angles to form a Y shape with different zero phases.

Therefore, in the present device having the above configuration, the seat frame 2
0. In other words, when the seat is facing the normal position F (busy snow ahead) Vr, the locking member 4 is
Since the lock claws 44a of No. 4 enter between the lock holes 41, 43, and 42, the seat frame portion cannot rotate relative to the support lock bracket 30, that is, the vehicle floor side.

The stiff state is the normal state in which the lock mechanism 40 restricts the rotation of the seat.

To rotate the seat when getting on and off, lift the operating portion 47b of the operating handle 47 upwards and rotate the handle 47.
The lock member 44 may be moved backward through the lock member 44 to remove the lock pawl 44a from the lock holes 42 and 43. That way, the seat frame can rotate freely, so you can easily get in and out of the seat by rotating the seat and the door. It is preferable that the U-turnable range of the seat be regulated using an appropriate stopper depending on the left seat or right seat. Of course, if a lock hole corresponding to the door side rotation position of the seat is separately formed in the annular shape 11!31 of the support lock bracket 30, the seat can be locked there. When the seat is returned to its normal position after getting on and off, the lock pawl 44a again enters between the lock holes 41, 43, and 42 by the force of the compression spring 46, so that the seat is locked in its normal position.

In the Queen's embodiment, front attachment brackets 12 and 13 are used to secure the lower brackets 10 onto the seat tracks 14 and 15. According to this configuration, a versatile device that can handle different seat rotational positions depending on the vehicle type and indoor rotational conditions can be obtained, and it is also possible to further reduce the weight by making the lower bracket 10 as small as possible. . The opening 9 bracket 10 and the attachment bracket 12.13 are fitted with beads and 7 as appropriate.
It is preferable to provide a lunge to increase rigidity.

In addition, the locking mechanism 40 in the above P embodiment has a Kll/digit distance between the inner and outer convex portions 27, 26 of the seat frame and the annular lll31 of the support lock bracket 30, so that a locking mechanism with a simple structure can be obtained. , and lock hole 4
If you change the positions of 1, 42, and 43, the operating handle 47
Although there is an advantage that the direction of the drawer bracket 10 can be freely changed, it is also possible to provide a locking mechanism with the same function between the seat frame 20 and the drawer bracket 10.

In summary, the present invention has a rotation center hole formed directly in the seat frame to which the seat is attached, an open annular space above the periphery of the rotation center hole, and a groove-shaped wall inserted into the annular space so as to be relatively rotatable. The support lock bracket and the lower bracket on the vehicle floor side that fixes the support lock bracket constitute the basic rotation mechanism, so the structure is simple and the weight is increased compared to the seat without a rotation mechanism. The 'JI! 1IIIK may be provided without prejudice.

[Brief explanation of the drawing]

Hall 11! ! ! II is an exploded perspective view showing an embodiment of the S/-to rotating device according to the present invention, and FIG. 2 is a plan view of the assembled state.
Figures 3 and 4 are the same figures as those in Figure 2.
Vii&lj5 sectional view, Figure 5 is a sectional view similar to Figure 4 showing another embodiment of the rotary support mechanism of the seat frame. 10 - lower bracket, 11... support hole, 12,
13... Attachment bracket, 14, 15.
... Seat track, y... Seat frame, 24.
・Rotating public/private 25...Annular 9 spaces, 26...Outer cylindrical part, 27...Inner cylindrical @, 30--Support lock bracket, 31--Annular wall, 40--Lock Mechanism, 41.42.43--Lock pull, 44--Lock member, 44a-Lock claw, 46--Compression spring, 47--
・One dollar for operation. Patent applicant Shiraki Metal Industry Co., Ltd. Agent Kunio Miura Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] (1) A lower bracket fixed to the vehicle floor side, a seat frame to which the seat is attached, a rotation center hole drilled in the seat frame, and an inner and outer ring that is continuous with the periphery of the rotation center hole. an upper open annular space formed by a cylindrical part;
It has an annular wall that is relatively rotatably inserted into this layered space from above, a support lock bracket that is fixed to the upper P lower bracket, and a lock mechanism that fixes the seat frame in a normal position or makes it rotatable. Seat rotating device. (2. In Claim 1, the lower bracket adjusts the front and back position of the seat via the front and rear attachment brackets.)) A seat rotation device fixed on a rack. (3) In claim 1 or 2, the locking mechanism advances and retreats between lock holes formed in the cylindrical portion of the seat frame and the annular IiK of the support lock bracket, and the double-ended lock holes. A phantom seat rotation device consisting of a locking member.